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Daily bump.
[thirdparty/gcc.git] / libstdc++-v3 / ChangeLog
index 6f085396ec6270bcd98ec817cde65896a7ee499f..673e93a15f4e9bc8f047f2baf3fcc70af6a0e29c 100644 (file)
+2023-11-30  Jonathan Wakely  <jwakely@redhat.com>
+
+       * include/std/ranges (__detail::__toable): Fix incorrect use of
+       _Range instead of _Cont.
+       (__detail::_ToClosure, __detail::_ToClosure2): Add missing
+       constexpr specifier on constructors.
+       * testsuite/std/ranges/conv/1.cc (_Cont, _Cont2, _Cont3): Remove
+       unnecessary begin() and end() members.
+       (test_constexpr): New function to check range adaptors are
+       usable in constant expressions.
+
+2023-11-29  Thomas Schwinge  <thomas@codesourcery.com>
+
+       * testsuite/23_containers/span/at.cc: Fix for '-fno-exceptions'
+       configurations.
+
+2023-11-28  Jonathan Wakely  <jwakely@redhat.com>
+
+       * include/bits/atomic_wait.h: Include <stdint.h>.
+
+2023-11-28  Jonathan Wakely  <jwakely@redhat.com>
+
+       * include/bits/stl_uninitialized.h: Fix typo in comment.
+
+2023-11-24  Jan Hubicka  <jh@suse.cz>
+
+       PR middle-end/109849
+       * include/bits/stl_uninitialized.h (__relocate_a_1): Use memcpy instead
+       of memmove.
+
+2023-11-23  Jonathan Wakely  <jwakely@redhat.com>
+
+       PR libstdc++/111055
+       * include/bits/ranges_base.h (from_range_t): Define new tag
+       type.
+       (from_range): Define new tag object.
+       * include/bits/version.def (ranges_to_container): Define.
+       * include/bits/version.h: Regenerate.
+       * include/std/ranges (ranges::to): Define.
+       * testsuite/std/ranges/conv/1.cc: New test.
+       * testsuite/std/ranges/conv/2_neg.cc: New test.
+       * testsuite/std/ranges/conv/version.cc: New test.
+
+2023-11-23  Jonathan Wakely  <jwakely@redhat.com>
+
+       * testsuite/util/testsuite_allocator.h (uneq_allocator): Fix
+       equality operator for heterogeneous comparisons.
+
+2023-11-21  Jonathan Wakely  <jwakely@redhat.com>
+
+       * include/bits/version.def (freestanding_cstring): Add.
+       * include/bits/version.h: Regenerate.
+       * include/c_compatibility/string.h (strtok): Do not declare for
+       C++26 freestanding.
+       * include/c_global/cstring (strtok): Likewise.
+       * testsuite/21_strings/headers/cstring/version.cc: New test.
+
+2023-11-21  Jonathan Wakely  <jwakely@redhat.com>
+
+       * include/bits/version.def (freestanding_algorithm)
+       (freestanding_array, freestanding_optional)
+       (freestanding_string_view, freestanding_variant): Add.
+       * include/bits/version.h: Regenerate.
+       * include/std/algorithm (__glibcxx_want_freestanding_algorithm):
+       Define.
+       * include/std/array (__glibcxx_want_freestanding_array):
+       Define.
+       * include/std/optional (__glibcxx_want_freestanding_optional):
+       Define.
+       * include/std/string_view
+       (__glibcxx_want_freestanding_string_view): Define.
+       * include/std/variant (__glibcxx_want_freestanding_variant):
+       Define.
+       * testsuite/20_util/optional/version.cc: Add checks for
+       __cpp_lib_freestanding_optional.
+       * testsuite/20_util/variant/version.cc: Add checks for
+       __cpp_lib_freestanding_variant.
+       * testsuite/23_containers/array/tuple_interface/get_neg.cc:
+       Adjust dg-error line numbers.
+       * testsuite/21_strings/basic_string_view/requirements/version.cc:
+       New test.
+       * testsuite/23_containers/array/requirements/version.cc: New
+       test.
+       * testsuite/25_algorithms/fill_n/requirements/version.cc: New
+       test.
+       * testsuite/25_algorithms/swap_ranges/requirements/version.cc:
+       New test.
+
+2023-11-21  Jonathan Wakely  <jwakely@redhat.com>
+
+       * include/bits/version.def (freestanding_expected): New macro.
+       (span): Add C++26 value.
+       * include/bits/version.h: Regenerate.
+       * include/std/expected (__glibcxx_want_freestanding_expected):
+       Define.
+       * include/std/span (span::at): New member function.
+       * testsuite/20_util/expected/version.cc: Add checks for
+       __cpp_lib_freestanding_expected.
+       * testsuite/23_containers/span/2.cc: Moved to...
+       * testsuite/23_containers/span/version.cc: ...here. Add checks
+       for __cpp_lib_span in <span> as well as in <version>.
+       * testsuite/23_containers/span/1.cc: Removed.
+       * testsuite/23_containers/span/at.cc: New test.
+
+2023-11-21  Jonathan Wakely  <jwakely@redhat.com>
+
+       * include/tr2/dynamic_bitset (dynamic_bitset): Pass zero and one
+       characters to _M_copy_from_string.
+       * testsuite/tr2/dynamic_bitset/string.cc: New test.
+
+2023-11-21  Jonathan Wakely  <jwakely@redhat.com>
+
+       * doc/html/*: Regenerate.
+       * doc/xml/faq.xml: Remove reference to buildstat.html pages.
+       * doc/xml/manual/test.xml: Likewise
+
+2023-11-21  Jan Hubicka  <jh@suse.cz>
+
+       PR libstdc++/110287
+       PR middle-end/109811
+       PR middle-end/109849
+       * include/bits/stl_vector.h (_M_realloc_append): New member function.
+       (push_back): Use it.
+       * include/bits/vector.tcc: (emplace_back): Use it.
+       (_M_realloc_insert): Let compiler know that new vector size is non-zero.
+       (_M_realloc_append): New member function.
+
+2023-11-18  Jonathan Wakely  <jwakely@redhat.com>
+
+       PR libstdc++/112607
+       * include/std/format (basic_format_arg::_S_to_arg_type): Check
+       value_type for basic_string_view and basic_string
+       specializations.
+       * testsuite/std/format/arguments/112607.cc: New test.
+
+2023-11-18  Jonathan Wakely  <jwakely@redhat.com>
+
+       PR libstdc++/110801
+       * include/std/format (_Sink_iter::_M_reserve): New member
+       function.
+       (_Sink::_Reservation): New nested class.
+       (_Sink::_M_reserve, _Sink::_M_bump): New virtual functions.
+       (_Seq_sink::_M_reserve, _Seq_sink::_M_bump): New virtual
+       overrides.
+       (_Iter_sink<O, ContigIter>::_M_reserve): Likewise.
+       (__do_vformat_to): Use new functions to optimize "{}" case.
+
+2023-11-17  Jonathan Wakely  <jwakely@redhat.com>
+
+       * config.h.in: Regenerate.
+
+2023-11-17  Jonathan Wakely  <jwakely@redhat.com>
+
+       * include/Makefile.am: Add new header.
+       * include/Makefile.in: Regenerate.
+       * include/bits/version.def (saturation_arithmetic): Define.
+       * include/bits/version.h: Regenerate.
+       * include/std/numeric: Include new header.
+       * include/bits/sat_arith.h: New file.
+       * testsuite/26_numerics/saturation/add.cc: New test.
+       * testsuite/26_numerics/saturation/cast.cc: New test.
+       * testsuite/26_numerics/saturation/div.cc: New test.
+       * testsuite/26_numerics/saturation/mul.cc: New test.
+       * testsuite/26_numerics/saturation/sub.cc: New test.
+       * testsuite/26_numerics/saturation/version.cc: New test.
+
+2023-11-17  Jonathan Wakely  <jwakely@redhat.com>
+
+       * include/std/utility (in_range): Rename _Up parameter to _Res.
+
+2023-11-17  Jonathan Wakely  <jwakely@redhat.com>
+
+       * include/bits/out_ptr.h: Add Doxygen comments. Remove a
+       redundant preprocessor condition.
+       * testsuite/20_util/smartptr.adapt/version.cc: New test.
+
+2023-11-17  Jonathan Wakely  <jwakely@redhat.com>
+
+       * include/bits/chrono_io.h: Fix Doxygen markup.
+
+2023-11-16  Jonathan Wakely  <jwakely@redhat.com>
+
+       PR libstdc++/112564
+       * include/std/stacktrace (formatter::format): Format according
+       to format-spec.
+       * include/std/thread (formatter::format): Use _Align_right as
+       default.
+       * testsuite/19_diagnostics/stacktrace/output.cc: Check
+       fill-and-align handling. Change compile test to run.
+       * testsuite/30_threads/thread/id/output.cc: Check fill-and-align
+       handling.
+
+2023-11-16  Jonathan Wakely  <jwakely@redhat.com>
+
+       PR libstdc++/111667
+       * include/Makefile.am: Add new header.
+       * include/Makefile.in: Regenerate.
+       * include/bits/out_ptr.h: New file.
+       * include/bits/shared_ptr.h (__is_shared_ptr): Move definition
+       to here ...
+       * include/bits/shared_ptr_atomic.h (__is_shared_ptr): ... from
+       here.
+       * include/bits/shared_ptr_base.h (__shared_count): Declare
+       out_ptr_t as a friend.
+       (_Sp_counted_deleter, __shared_ptr): Likewise.
+       * include/bits/unique_ptr.h (unique_ptr, unique_ptr<T[], D>):
+       Declare out_ptr_t and inout_ptr_t as friends.
+       (__is_unique_ptr): Define new variable template.
+       * include/bits/version.def (out_ptr): Define.
+       * include/bits/version.h: Regenerate.
+       * include/std/memory: Include new header.
+       * testsuite/20_util/smartptr.adapt/inout_ptr/1.cc: New test.
+       * testsuite/20_util/smartptr.adapt/inout_ptr/2.cc: New test.
+       * testsuite/20_util/smartptr.adapt/inout_ptr/shared_ptr_neg.cc:
+       New test.
+       * testsuite/20_util/smartptr.adapt/inout_ptr/void_ptr.cc: New
+       test.
+       * testsuite/20_util/smartptr.adapt/out_ptr/1.cc: New test.
+       * testsuite/20_util/smartptr.adapt/out_ptr/2.cc: New test.
+       * testsuite/20_util/smartptr.adapt/out_ptr/shared_ptr_neg.cc:
+       New test.
+       * testsuite/20_util/smartptr.adapt/out_ptr/void_ptr.cc: New
+       test.
+
+2023-11-16  Jonathan Wakely  <jwakely@redhat.com>
+
+       * include/bits/algorithmfwd.h: Do not define standard feature
+       test macro here.
+       * include/bits/align.h: Likewise. Test internal macros instead
+       of standard macros.
+       * include/bits/alloc_traits.h: Likewise.
+       * include/bits/allocator.h: Likewise.
+       * include/bits/atomic_base.h: Likewise.
+       * include/bits/atomic_timed_wait.h: Likewise.
+       * include/bits/atomic_wait.h: Likewise.
+       * include/bits/basic_string.h: Likewise.
+       * include/bits/basic_string.tcc: Likewise.
+       * include/bits/char_traits.h: Likewise.
+       * include/bits/chrono.h: Likewise.
+       * include/bits/cow_string.h: Likewise.
+       * include/bits/forward_list.h: Likewise.
+       * include/bits/hashtable.h: Likewise.
+       * include/bits/ios_base.h: Likewise.
+       * include/bits/memory_resource.h: Likewise.
+       * include/bits/move.h: Likewise.
+       * include/bits/move_only_function.h: Likewise.
+       * include/bits/node_handle.h: Likewise.
+       * include/bits/ptr_traits.h: Likewise.
+       * include/bits/range_access.h: Likewise.
+       * include/bits/ranges_algo.h: Likewise.
+       * include/bits/ranges_cmp.h: Likewise.
+       * include/bits/ranges_util.h: Likewise.
+       * include/bits/semaphore_base.h: Likewise.
+       * include/bits/shared_ptr.h: Likewise.
+       * include/bits/shared_ptr_atomic.h: Likewise.
+       * include/bits/shared_ptr_base.h: Likewise.
+       * include/bits/stl_algo.h: Likewise.
+       * include/bits/stl_algobase.h: Likewise.
+       * include/bits/stl_function.h: Likewise.
+       * include/bits/stl_iterator.h: Likewise.
+       * include/bits/stl_list.h: Likewise.
+       * include/bits/stl_map.h: Likewise.
+       * include/bits/stl_pair.h: Likewise.
+       * include/bits/stl_queue.h: Likewise.
+       * include/bits/stl_stack.h: Likewise.
+       * include/bits/stl_tree.h: Likewise.
+       * include/bits/stl_uninitialized.h: Likewise.
+       * include/bits/stl_vector.h: Likewise.
+       * include/bits/unique_ptr.h: Likewise.
+       * include/bits/unordered_map.h: Likewise.
+       * include/bits/uses_allocator_args.h: Likewise.
+       * include/bits/utility.h: Likewise.
+       * include/bits/erase_if.h: Add comment.
+       * include/std/algorithm: Define standard feature test macros
+       here.
+       * include/std/atomic: Likewise.
+       * include/std/array: Likewise.
+       * include/std/chrono: Likewise.
+       * include/std/condition_variable: Likewise.
+       * include/std/deque: Likewise.
+       * include/std/format: Likewise.
+       * include/std/functional: Likewise.
+       * include/std/forward_list: Likewise.
+       * include/std/ios: Likewise.
+       * include/std/iterator: Likewise.
+       * include/std/list: Likewise.
+       * include/std/map: Likewise.
+       * include/std/memory: Likewise.
+       * include/std/numeric: Likewise.
+       * include/std/queue: Likewise.
+       * include/std/ranges: Likewise.
+       * include/std/regex: Likewise.
+       * include/std/set: Likewise.
+       * include/std/stack: Likewise.
+       * include/std/stop_token: Likewise.
+       * include/std/string: Likewise.
+       * include/std/string_view:
+       * include/std/tuple: Likewise.
+       * include/std/unordered_map:
+       * include/std/unordered_set:
+       * include/std/utility: Likewise.
+       * include/std/vector: Likewise.
+       * include/std/scoped_allocator: Query internal macros instead of
+       standard macros.
+
+2023-11-16  Jonathan Wakely  <jwakely@redhat.com>
+
+       * testsuite/18_support/byte/requirements.cc: Disable PCH.
+       * testsuite/18_support/destroying_delete.cc: Likewise.
+       * testsuite/18_support/source_location/1.cc: Likewise.
+       * testsuite/18_support/source_location/version.cc: Likewise.
+       * testsuite/18_support/type_info/constexpr.cc: Likewise.
+       * testsuite/18_support/uncaught_exceptions/uncaught_exceptions.cc:
+       Likewise.
+       * testsuite/19_diagnostics/stacktrace/output.cc: Likewise.
+       * testsuite/19_diagnostics/stacktrace/synopsis.cc: Likewise.
+       * testsuite/19_diagnostics/stacktrace/version.cc: Likewise.
+       * testsuite/20_util/addressof/requirements/constexpr.cc:
+       Likewise.
+       * testsuite/20_util/allocator_traits/header-2.cc: Likewise.
+       * testsuite/20_util/allocator_traits/header.cc: Likewise.
+       * testsuite/20_util/as_const/1.cc: Likewise. Likewise.
+       * testsuite/20_util/bitset/cons/constexpr_c++23.cc: Likewise.
+       * testsuite/20_util/bitset/version.cc: Likewise.
+       * testsuite/20_util/duration/arithmetic/constexpr_c++17.cc:
+       Likewise.
+       * testsuite/20_util/duration_cast/rounding.cc: Likewise.
+       * testsuite/20_util/enable_shared_from_this/members/weak_from_this.cc:
+       Likewise.
+       * testsuite/20_util/exchange/constexpr.cc: Likewise.
+       * testsuite/20_util/expected/synopsis.cc: Likewise.
+       * testsuite/20_util/expected/version.cc: Likewise.
+       * testsuite/20_util/function_objects/bind_front/1.cc: Likewise.
+       * testsuite/20_util/function_objects/bind_front/2.cc: Likewise.
+       * testsuite/20_util/function_objects/invoke/3.cc: Likewise.
+       * testsuite/20_util/function_objects/invoke/4.cc: Likewise.
+       * testsuite/20_util/function_objects/invoke/constexpr.cc:
+       Likewise.
+       * testsuite/20_util/function_objects/invoke/version.cc:
+       Likewise.
+       * testsuite/20_util/function_objects/searchers.cc: Likewise.
+       * testsuite/20_util/integer_comparisons/1.cc: Likewise.
+       * testsuite/20_util/integer_comparisons/2.cc: Likewise.
+       * testsuite/20_util/is_bounded_array/value.cc: Likewise.
+       * testsuite/20_util/is_layout_compatible/value.cc: Likewise.
+       * testsuite/20_util/is_layout_compatible/version.cc: Likewise.
+       * testsuite/20_util/is_nothrow_swappable/requirements/explicit_instantiation.cc:
+       Likewise.
+       * testsuite/20_util/is_nothrow_swappable/requirements/typedefs.cc:
+       Likewise.
+       * testsuite/20_util/is_nothrow_swappable/value.cc: Likewise.
+       * testsuite/20_util/is_nothrow_swappable/value.h: Likewise.
+       * testsuite/20_util/is_nothrow_swappable_with/requirements/explicit_instantiation.cc:
+       Remove redundant checks already tested elsewhere.
+       * testsuite/20_util/is_nothrow_swappable_with/requirements/typedefs.cc:
+       Likewise.
+       * testsuite/20_util/is_nothrow_swappable_with/value.cc: Disable
+       PCH.
+       * testsuite/20_util/is_pointer_interconvertible/value.cc:
+       Likewise.
+       * testsuite/20_util/is_pointer_interconvertible/version.cc:
+       Likewise.
+       * testsuite/20_util/is_scoped_enum/value.cc: Likewise.
+       * testsuite/20_util/is_scoped_enum/version.cc: Likewise.
+       * testsuite/20_util/is_swappable/requirements/explicit_instantiation.cc:
+       Remove redundant checks already tested elsewhere.
+       * testsuite/20_util/is_swappable/requirements/typedefs.cc:
+       Remove redundant checks already tested elsewhere.
+       * testsuite/20_util/is_swappable/value.cc: Disable PCH.
+       * testsuite/20_util/is_swappable/value.h: Reorder headers.
+       * testsuite/20_util/is_swappable_with/requirements/explicit_instantiation.cc:
+       Remove redundant checks already tested elsewhere.
+       * testsuite/20_util/is_swappable_with/requirements/typedefs.cc:
+       Remove redundant checks already tested elsewhere.
+       * testsuite/20_util/is_swappable_with/value.cc: Disable PCH.
+       * testsuite/20_util/is_unbounded_array/value.cc: Likewise.
+       * testsuite/20_util/move_only_function/cons.cc: Likewise.
+       * testsuite/20_util/move_only_function/version.cc: Likewise.
+       * testsuite/20_util/optional/monadic/and_then.cc: Likewise.
+       * testsuite/20_util/optional/requirements.cc: Likewise.
+       * testsuite/20_util/optional/version.cc: Likewise.
+       * testsuite/20_util/owner_less/void.cc: Likewise.
+       * testsuite/20_util/reference_from_temporary/value.cc: Likewise.
+       * testsuite/20_util/reference_from_temporary/version.cc:
+       Likewise.
+       * testsuite/20_util/shared_ptr/atomic/atomic_shared_ptr.cc:
+       Likewise.
+       * testsuite/20_util/shared_ptr/creation/array.cc: Likewise.
+       * testsuite/20_util/shared_ptr/creation/overwrite.cc: Likewise.
+       * testsuite/20_util/shared_ptr/creation/version.cc: Likewise.
+       * testsuite/20_util/time_point_cast/rounding.cc: Likewise.
+       * testsuite/20_util/to_chars/constexpr.cc: Likewise.
+       * testsuite/20_util/to_chars/result.cc: Likewise.
+       * testsuite/20_util/to_chars/version.cc: Likewise.
+       * testsuite/20_util/to_underlying/1.cc: Likewise.
+       * testsuite/20_util/to_underlying/version.cc: Likewise.
+       * testsuite/20_util/tuple/apply/1.cc: Likewise.
+       * testsuite/20_util/tuple/cons/constexpr_allocator_arg_t.cc:
+       Likewise.
+       * testsuite/20_util/tuple/make_from_tuple/1.cc: Likewise.
+       * testsuite/20_util/tuple/p2321r2.cc: Likewise.
+       * testsuite/20_util/tuple/tuple_element_t.cc: Likewise.
+       * testsuite/20_util/unique_ptr/cons/constexpr_c++20.cc:
+       Likewise.
+       * testsuite/20_util/unique_ptr/creation/for_overwrite.cc:
+       Likewise.
+       * testsuite/20_util/unreachable/1.cc: Likewise.
+       * testsuite/20_util/unreachable/version.cc: Likewise.
+       * testsuite/20_util/unwrap_reference/1.cc: Likewise.
+       * testsuite/20_util/unwrap_reference/3.cc: Likewise.
+       * testsuite/20_util/variant/constexpr.cc: Likewise.
+       * testsuite/20_util/variant/version.cc: Likewise.
+       * testsuite/20_util/variant/visit_inherited.cc: Likewise.
+       * testsuite/20_util/void_t/1.cc: Likewise.
+       * testsuite/21_strings/basic_string/capacity/char/resize_and_overwrite.cc:
+       Likewise.
+       * testsuite/21_strings/basic_string/cons/char/constexpr.cc:
+       Likewise.
+       * testsuite/21_strings/basic_string/cons/wchar_t/constexpr.cc:
+       Likewise.
+       * testsuite/21_strings/basic_string/erasure.cc: Likewise.
+       * testsuite/21_strings/basic_string/numeric_conversions/char/to_string_float.cc:
+       Likewise.
+       * testsuite/21_strings/basic_string/numeric_conversions/version.cc:
+       Likewise.
+       * testsuite/21_strings/basic_string/version.cc: Likewise.
+       * testsuite/21_strings/basic_string_view/operations/contains/char.cc:
+       Likewise.
+       * testsuite/21_strings/basic_string_view/operations/contains/char/2.cc:
+       Likewise.
+       * testsuite/21_strings/basic_string_view/operations/copy/char/constexpr.cc:
+       Likewise.
+       * testsuite/21_strings/char_traits/requirements/constexpr_functions_c++17.cc:
+       Likewise.
+       * testsuite/21_strings/char_traits/requirements/constexpr_functions_c++20.cc:
+       Likewise.
+       * testsuite/21_strings/char_traits/requirements/version.cc:
+       Likewise.
+       * testsuite/23_containers/array/comparison_operators/constexpr.cc:
+       Likewise.
+       * testsuite/23_containers/array/creation/1.cc: Likewise.
+       * testsuite/23_containers/array/creation/2.cc: Likewise.
+       * testsuite/23_containers/array/element_access/constexpr_c++17.cc:
+       Likewise.
+       * testsuite/23_containers/array/requirements/constexpr_fill.cc:
+       Likewise.
+       * testsuite/23_containers/array/requirements/constexpr_iter.cc:
+       Likewise.
+       * testsuite/23_containers/deque/erasure.cc: Likewise.
+       * testsuite/23_containers/forward_list/erasure.cc: Likewise.
+       * testsuite/23_containers/list/erasure.cc: Likewise.
+       * testsuite/23_containers/map/erasure.cc: Likewise.
+       * testsuite/23_containers/queue/cons_from_iters.cc: Likewise.
+       * testsuite/23_containers/set/erasure.cc: Likewise.
+       * testsuite/23_containers/span/1.cc: Likewise.
+       * testsuite/23_containers/span/2.cc: Likewise.
+       * testsuite/23_containers/stack/cons_from_iters.cc: Likewise.
+       * testsuite/23_containers/unordered_map/erasure.cc: Likewise.
+       * testsuite/23_containers/unordered_map/operations/1.cc:
+       Likewise.
+       * testsuite/23_containers/unordered_set/erasure.cc: Likewise.
+       * testsuite/23_containers/unordered_set/operations/1.cc:
+       Likewise.
+       * testsuite/23_containers/vector/cons/constexpr.cc: Likewise.
+       * testsuite/23_containers/vector/erasure.cc: Likewise.
+       * testsuite/23_containers/vector/requirements/version.cc:
+       Likewise.
+       * testsuite/24_iterators/insert_iterator/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/clamp/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/clamp/requirements/explicit_instantiation/1.cc:
+       Remove redundant checks already tested elsewhere.
+       * testsuite/25_algorithms/constexpr_macro.cc: Likewise.
+       * testsuite/25_algorithms/cpp_lib_constexpr.cc: Likewise.
+       * testsuite/25_algorithms/fold_left/1.cc: Likewise.
+       * testsuite/25_algorithms/pstl/feature_test-2.cc: Likewise.
+       * testsuite/25_algorithms/pstl/feature_test-3.cc: Likewise.
+       * testsuite/25_algorithms/pstl/feature_test-4.cc: Likewise.
+       * testsuite/25_algorithms/pstl/feature_test-5.cc: Likewise.
+       * testsuite/25_algorithms/pstl/feature_test.cc: Likewise.
+       * testsuite/26_numerics/bit/bit.byteswap/byteswap.cc: Likewise.
+       * testsuite/26_numerics/bit/bit.byteswap/version.cc: Likewise.
+       * testsuite/26_numerics/bit/bit.cast/bit_cast.cc: Likewise.
+       * testsuite/26_numerics/bit/bit.cast/version.cc: Likewise.
+       * testsuite/26_numerics/bit/header-2.cc: Likewise.
+       * testsuite/26_numerics/bit/header.cc: Likewise.
+       * testsuite/26_numerics/complex/1.cc: Likewise.
+       * testsuite/26_numerics/complex/2.cc: Likewise.
+       * testsuite/26_numerics/endian/2.cc: Likewise.
+       * testsuite/26_numerics/endian/3.cc: Likewise.
+       * testsuite/26_numerics/gcd/1.cc: Likewise.
+       * testsuite/26_numerics/lcm/1.cc: Likewise.
+       * testsuite/26_numerics/lerp/1.cc: Likewise.
+       * testsuite/26_numerics/lerp/version.cc: Likewise.
+       * testsuite/26_numerics/midpoint/integral.cc: Likewise.
+       * testsuite/26_numerics/midpoint/version.cc: Likewise.
+       * testsuite/26_numerics/numbers/1.cc: Likewise.
+       * testsuite/26_numerics/numbers/2.cc: Likewise.
+       * testsuite/27_io/basic_filebuf/native_handle/char/1.cc:
+       Likewise.
+       * testsuite/27_io/basic_filebuf/native_handle/version.cc:
+       Likewise.
+       * testsuite/27_io/basic_ofstream/open/char/noreplace.cc:
+       Likewise.
+       * testsuite/27_io/basic_ofstream/open/wchar_t/noreplace.cc:
+       Likewise.
+       * testsuite/27_io/basic_syncbuf/1.cc: Likewise.
+       * testsuite/27_io/basic_syncbuf/2.cc: Likewise.
+       * testsuite/27_io/basic_syncstream/1.cc: Likewise.
+       * testsuite/27_io/basic_syncstream/2.cc: Likewise.
+       * testsuite/27_io/spanstream/1.cc: Likewise.
+       * testsuite/27_io/spanstream/version.cc: Likewise.
+       * testsuite/29_atomics/atomic/cons/value_init.cc: Likewise.
+       * testsuite/29_atomics/atomic/lock_free_aliases.cc: Likewise.
+       * testsuite/29_atomics/atomic/wait_notify/1.cc: Likewise.
+       * testsuite/29_atomics/atomic/wait_notify/2.cc: Likewise.
+       * testsuite/29_atomics/headers/stdatomic.h/c_compat.cc:
+       Likewise.
+       * testsuite/29_atomics/headers/stdatomic.h/version.cc: Likewise.
+       * testsuite/30_threads/barrier/1.cc: Likewise.
+       * testsuite/30_threads/barrier/2.cc: Likewise.
+       * testsuite/30_threads/condition_variable_any/stop_token/1.cc:
+       Likewise.
+       * testsuite/30_threads/condition_variable_any/stop_token/2.cc:
+       Likewise.
+       * testsuite/30_threads/jthread/1.cc: Likewise.
+       * testsuite/30_threads/jthread/version.cc: Likewise.
+       * testsuite/30_threads/latch/1.cc: Likewise.
+       * testsuite/30_threads/latch/2.cc: Likewise.
+       * testsuite/30_threads/scoped_lock/requirements/typedefs.cc:
+       Likewise.
+       * testsuite/30_threads/semaphore/1.cc: Likewise.
+       * testsuite/30_threads/semaphore/2.cc: Likewise.
+       * testsuite/30_threads/stop_token/1.cc: Likewise.
+       * testsuite/30_threads/stop_token/2.cc: Likewise.
+       * testsuite/experimental/feat-char8_t.cc: Likewise.
+       * testsuite/experimental/iterator/ostream_joiner.cc: Likewise.
+       * testsuite/experimental/numeric/gcd.cc: Likewise.
+       * testsuite/experimental/scopeguard/uniqueres.cc: Likewise.
+       * testsuite/std/concepts/1.cc: Likewise.
+       * testsuite/std/concepts/2.cc: Likewise.
+       * testsuite/std/ranges/adaptors/as_const/1.cc: Likewise.
+       * testsuite/std/ranges/adaptors/as_rvalue/1.cc: Likewise.
+       * testsuite/std/ranges/adaptors/chunk/1.cc: Likewise.
+       * testsuite/std/ranges/adaptors/chunk_by/1.cc: Likewise.
+       * testsuite/std/ranges/adaptors/enumerate/1.cc: Likewise.
+       * testsuite/std/ranges/adaptors/join_with/1.cc: Likewise.
+       * testsuite/std/ranges/adaptors/slide/1.cc: Likewise.
+       * testsuite/std/ranges/adaptors/stride/1.cc: Likewise.
+       * testsuite/std/ranges/cartesian_product/1.cc: Likewise.
+       * testsuite/std/ranges/headers/ranges/synopsis.cc: Likewise.
+       * testsuite/std/ranges/repeat/1.cc: Likewise.
+       * testsuite/std/ranges/version_c++23.cc: Likewise.
+       * testsuite/std/ranges/zip/1.cc: Likewise.
+       * testsuite/std/time/syn_c++20.cc: Likewise.
+       * testsuite/experimental/feat-cxx14.cc: Likewise. Include
+       <algorithm> and <iterator>.
+       * testsuite/23_containers/array/tuple_interface/get_neg.cc:
+       Adjust dg-error line numbers.
+
+2023-11-16  Jonathan Wakely  <jwakely@redhat.com>
+
+       * include/bits/version.def (stds): Use >= 202100 for C++23
+       condition.
+       * include/bits/version.h: Regenerate.
+       * include/std/thread: Use > C++20 instead of >= C++23 for
+       __cplusplus condition.
+
+2023-11-16  Jonathan Wakely  <jwakely@redhat.com>
+
+       * include/std/istream (__rvalue_stream_extraction_t): Test
+       __cpp_concepts instead of __cpp_lib_concepts.
+       * include/std/ostream (__derived_from_ios_base): Likewise.
+       (__rvalue_stream_insertion_t): Likewise.
+
+2023-11-15  Jonathan Wakely  <jwakely@redhat.com>
+
+       PR libstdc++/112491
+       * python/libstdcxx/v6/xmethods.py (DequeWorkerBase.index):
+       Correctly handle unused capacity at the start of the first node.
+       * testsuite/libstdc++-xmethods/deque.cc: Check index operator
+       when elements have been removed from the front.
+
+2023-11-15  Jonathan Wakely  <jwakely@redhat.com>
+
+       * include/std/stacktrace (basic_stacktrace::at): Fix class name
+       in exception message.
+       * testsuite/19_diagnostics/stacktrace/hash.cc: Do not fail if
+       current() returns a non-empty stacktrace.
+
+2023-11-15  Alexandre Oliva  <oliva@gnu.org>
+
+       Revert:
+       2023-11-15  Alexandre Oliva  <oliva@adacore.com>
+
+       * include/bits/stl_bvector.h (_GLIBCXX_ALWAYS_INLINE): Undef.
+
+2023-11-15  Alexandre Oliva  <oliva@adacore.com>
+
+       * include/bits/stl_bvector.h (_GLIBCXX_ALWAYS_INLINE): Undef.
+
+2023-11-14  Cassio Neri  <cassio.neri@gmail.com>
+
+       * include/std/chrono (operator-(const weekday&, const weekday&)):
+       Optimize.
+
+2023-11-14  Cassio Neri  <cassio.neri@gmail.com>
+
+       * include/std/chrono (weekday::_S_from_days): Fix UB.
+       * testsuite/std/time/weekday/1.cc: Add test for overflow.
+
+2023-11-14  Cassio Neri  <cassio.neri@gmail.com>
+
+       * include/std/chrono (year::is_leap): Clear code.
+
+2023-11-14  Cassio Neri  <cassio.neri@gmail.com>
+
+       * include/std/chrono (year_month_day_last::day): Remove &1.
+
+2023-11-14  Jonathan Wakely  <jwakely@redhat.com>
+
+       * include/std/charconv (__from_chars_pow2_base): Convert base to
+       unsigned for call to __countr_zero.
+       (__from_chars_alnum): Likewise for call to __bit_width.
+
+2023-11-14  Jonathan Wakely  <jwakely@redhat.com>
+
+       PR libstdc++/112348
+       * include/std/stacktrace (hash<basic_stacktrace<Alloc>>): Fix
+       type of hash functio nfor entries.
+       * testsuite/19_diagnostics/stacktrace/hash.cc: New test.
+
+2023-11-14  Jonathan Wakely  <jwakely@redhat.com>
+
+       PR libstdc++/112491
+       * python/libstdcxx/v6/xmethods.py (DequeWorkerBase.size): Fix
+       calculation to use _M_start._M_cur.
+       * testsuite/libstdc++-xmethods/deque.cc: Check failing cases.
+
+2023-11-13  Arsen Arsenović  <arsen@aarsen.me>
+
+       * configure: Regenerate.
+
+2023-11-13  Jonathan Wakely  <jwakely@redhat.com>
+
+       * testsuite/std/time/clock/file/io.cc: Double timeout using
+       dg-timeout-factor.
+       * testsuite/std/time/clock/gps/io.cc: Likewise.
+       * testsuite/std/time/clock/local/io.cc: Likewise.
+       * testsuite/std/time/clock/system/io.cc: Likewise.
+       * testsuite/std/time/clock/tai/io.cc: Likewise.
+       * testsuite/std/time/clock/utc/io.cc: Likewise.
+
+2023-11-13  Jonathan Wakely  <jwakely@redhat.com>
+
+       PR libstdc++/112480
+       * include/std/optional (_Optional_payload_base::_M_reset): Set
+       _M_engaged to false unconditionally.
+
+2023-11-11  Jonathan Wakely  <jwakely@redhat.com>
+
+       PR libstdc++/112467
+       * include/bits/stl_bvector.h (_M_assume_normalized): Do not use
+       statement form of assume attribute for Clang.
+
+2023-11-11  Jonathan Wakely  <jwakely@redhat.com>
+
+       * include/std/string_view (operator==, operator<=>): Remove
+       redundant overloads (LWG 3950).
+
+2023-11-11  Jonathan Wakely  <jwakely@redhat.com>
+
+       * testsuite/26_numerics/headers/complex.h/std_c++11.h: Moved to...
+       * testsuite/26_numerics/headers/complex.h/std_c++11.cc: ...here.
+       * testsuite/26_numerics/headers/complex.h/std_c++98.h: Moved to...
+       * testsuite/26_numerics/headers/complex.h/std_c++98.cc: ...here.
+       Check macro first and then #undef.
+       * testsuite/26_numerics/headers/complex.h/std_gnu++11.h: Moved to...
+       * testsuite/26_numerics/headers/complex.h/std_gnu++11.cc: ...here.
+
+2023-11-11  Jonathan Wakely  <jwakely@redhat.com>
+
+       PR libstdc++/112473
+       * include/bits/utility.h (integer_sequence): Add static_assert.
+       * testsuite/20_util/integer_sequence/112473.cc: New test.
+
+2023-11-11  Jonathan Wakely  <jwakely@redhat.com>
+
+       * testsuite/20_util/pair/dangling_ref.cc: Add hosted effective
+       target for specifiers using c++17_down.
+
+2023-11-11  Jonathan Wakely  <jwakely@redhat.com>
+
+       * include/bits/shared_ptr_atomic.h (atomic_is_lock_free)
+       (atomic_load_explicit, atomic_load, atomic_store_explicit)
+       (atomic_store, atomic_exchange_explicit, atomic_exchange)
+       (atomic_compare_exchange_strong, atomic_compare_exchange_weak)
+       (atomic_compare_exchange_strong_explicit)
+       (atomic_compare_exchange_weak_explicit): Add deprecated
+       attribute for C++20 and later.
+       * testsuite/20_util/shared_ptr/atomic/1.cc: Suppress deprecated
+       warnings.
+       * testsuite/20_util/shared_ptr/atomic/2.cc: Likewise.
+       * testsuite/20_util/shared_ptr/atomic/3.cc: Likewise.
+       * testsuite/29_atomics/atomic/lwg3220.cc: Likewise.
+
+2023-11-11  Jonathan Wakely  <jwakely@redhat.com>
+
+       * include/bits/std_mutex.h (lock_guard): Add [[nodiscard]]
+       attribute to constructors.
+       * include/bits/unique_lock.h (unique_lock): Likewise.
+       * include/std/mutex (scoped_lock, scoped_lock<Mutex>): Likewise.
+       * testsuite/30_threads/lock_guard/cons/nodiscard.cc: New test.
+       * testsuite/30_threads/scoped_lock/cons/nodiscard.cc: New test.
+       * testsuite/30_threads/unique_lock/cons/nodiscard.cc: New test.
+
+2023-11-11  Jonathan Wakely  <jwakely@redhat.com>
+
+       * include/std/span (span, as_bytes, as_writable_bytes): Add
+       [[nodiscard]] attribute on all non-void functions.
+       * testsuite/23_containers/span/back_assert_neg.cc: Suppress
+       nodiscard warning.
+       * testsuite/23_containers/span/back_neg.cc: Likewise.
+       * testsuite/23_containers/span/first_2_assert_neg.cc: Likewise.
+       * testsuite/23_containers/span/first_assert_neg.cc: Likewise.
+       * testsuite/23_containers/span/first_neg.cc: Likewise.
+       * testsuite/23_containers/span/front_assert_neg.cc: Likewise.
+       * testsuite/23_containers/span/front_neg.cc: Likewise.
+       * testsuite/23_containers/span/index_op_assert_neg.cc: Likewise.
+       * testsuite/23_containers/span/index_op_neg.cc: Likewise.
+       * testsuite/23_containers/span/last_2_assert_neg.cc: Likewise.
+       * testsuite/23_containers/span/last_assert_neg.cc: Likewise.
+       * testsuite/23_containers/span/last_neg.cc: Likewise.
+       * testsuite/23_containers/span/subspan_2_assert_neg.cc:
+       Likewise.
+       * testsuite/23_containers/span/subspan_3_assert_neg.cc:
+       Likewise.
+       * testsuite/23_containers/span/subspan_4_assert_neg.cc:
+       Likewise.
+       * testsuite/23_containers/span/subspan_5_assert_neg.cc:
+       Likewise.
+       * testsuite/23_containers/span/subspan_6_assert_neg.cc:
+       Likewise.
+       * testsuite/23_containers/span/subspan_assert_neg.cc: Likewise.
+       * testsuite/23_containers/span/subspan_neg.cc: Likewise.
+       * testsuite/23_containers/span/nodiscard.cc: New test.
+
+2023-11-11  Jonathan Wakely  <jwakely@redhat.com>
+
+       PR libstdc++/111638
+       * config.h.in: Regenerate.
+       * configure: Regenerate.
+       * linkage.m4 (GLIBCXX_MAYBE_UNDERSCORED_FUNCS): Remove.
+       (GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1): Do not check for _foo.
+       (GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1): Likewise.
+       (GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2): Likewise.
+       (GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_3): Likewise.
+       (GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_2): Do not use
+       GLIBCXX_MAYBE_UNDERSCORED_FUNCS.
+
+2023-11-11  Nathaniel Shead  <nathanieloshead@gmail.com>
+
+       PR libstdc++/79700
+       * include/c_global/cmath (acosf, acosl, asinf, asinl, atanf)
+       (atanl, atan2f, atan2l, ceilf, ceill, cosf, cosl, coshf, coshl)
+       (expf, expl, fabsf, fabsl, floorf, floorl, fmodf, fmodl, frexpf)
+       (frexpl, ldexpf, ldexpl, logf, logl, log10f, log10l, modff)
+       (modfl, powf, powl, sinf, sinl, sinhf, sinhl, sqrtf, sqrtl, tanf)
+       (tanl, tanhf, tanhl): Add using-declarations in namespace std.
+       * testsuite/26_numerics/headers/cmath/equivalent_functions.cc:
+       New test.
+       * testsuite/26_numerics/headers/cmath/functions_std_c++17.cc:
+       Add checks for existence of above names.
+
+2023-11-09  Arsen Arsenović  <arsen@aarsen.me>
+
+       * testsuite/20_util/scoped_allocator/noexcept.cc: Mark as
+       requiring hosted.
+
+2023-11-09  Arsen Arsenović  <arsen@aarsen.me>
+
+       * include/bits/memoryfwd.h: Remove HOSTED check around allocator
+       and its specializations.
+
+2023-11-09  Patrick Palka  <ppalka@redhat.com>
+
+       PR libstdc++/112453
+       * include/std/ranges (__detail::__box<_Tp>::operator*): Define
+       && overloads as well.
+       (__detail::__take_of_repeat_view): Forward __r when accessing
+       its _M_value member.
+       (__detail::__drop_of_repeat_view): Likewise.
+       * testsuite/std/ranges/repeat/1.cc (test07): New test.
+
+2023-11-09  François Dumont  <fdumont@gcc.gnu.org>
+
+       * include/bits/hashtable_policy.h (_RehashStateGuard): New.
+       (_Insert_base<>::_M_insert_range(_IIt, _IIt, const _NodeGet&, false_type)):
+       Adapt.
+       * include/bits/hashtable.h (__rehash_guard_t): New.
+       (__rehash_state): Remove.
+       (_M_rehash): Remove.
+       (_M_rehash_aux): Rename into _M_rehash.
+       (_M_assign_elements, _M_insert_unique_node, _M_insert_multi_node): Adapt.
+       (rehash): Adapt.
+
+2023-11-09  François Dumont  <fdumont@gcc.gnu.org>
+
+       * include/bits/hashtable_policy.h
+       (struct _NodePtrGuard<_HashtableAlloc, _NodePtr>): New.
+       (_ReuseAllocNode::operator()(_Args&&...)): Use latter to guard allocated node
+       pointer while constructing in place the value_type instance.
+
+2023-11-09  Alexandre Oliva  <oliva@adacore.com>
+
+       PR libstdc++/110807
+       * include/bits/stl_bvector.h (_Bit_iterator_base): Add
+       _M_assume_normalized member function.  Call it in _M_bump_up,
+       _M_bump_down, _M_incr, operator==, operator<=>, operator<, and
+       operator-.
+       (_Bit_iterator): Also call it in operator*.
+       (_Bit_const_iterator): Likewise.
+
+2023-11-07  François Dumont  <fdumont@gcc.gnu.org>
+
+       * include/bits/hashtable_policy.h
+       (_Hashtable_alloc<>::_M_allocate_node): Add missing call to node destructor
+       on construct exception.
+
+2023-11-07  Richard Biener  <rguenther@suse.de>
+
+       PR libstdc++/112351
+       * src/c++98/locale.cc (locale::facet::_S_initialize_once):
+       Check whether _S_c_locale is already initialized.
+       (locale::facet::_S_get_c_locale): Always perform non-threadsafe
+       init when threadsafe init failed.
+
+2023-11-06  Ian Lance Taylor  <iant@golang.org>
+
+       PR libbacktrace/111315
+       PR libbacktrace/112263
+       * acinclude.m4: Set -D_GNU_SOURCE in BACKTRACE_CPPFLAGS and when
+       grepping link.h for dl_iterate_phdr.
+       * configure: Regenerate.
+
+2023-11-06  Jonathan Wakely  <jwakely@redhat.com>
+
+       * include/std/expected (expected::and_then, expected::or_else):
+       Add string literals to static assertions.
+       * include/std/optional (optional::and_then, optional::or_else):
+       Likewise.
+
+2023-11-04  Feng Jisen  <J1senn@outlook.com>
+
+       * include/bits/utility.h (_Nth_type): Remove redundant partial
+       specialization.
+
+2023-11-04  Jonathan Wakely  <jwakely@redhat.com>
+
+       PR libstdc++/110133
+       * include/std/system_error (system_error::system_error): Group
+       arguments so that concatenation can reuse rvalue's capacity.
+       * src/c++11/system_error.cc (strerror_string): New function.
+       [_GLIBCXX_HAVE_STRERROR_R] (use_strerror_result): New functions.
+       (generic_error_category::message): Use strerror_string.
+       (system_error_category::message): Likewise.
+
+2023-11-04  Jonathan Wakely  <jwakely@redhat.com>
+
+       * doc/xml/manual/appendix_contributing.xml: Replace example that
+       uses a BADNAME.
+       * doc/html/manual/source_code_style.html: Regenerate.
+
+2023-11-02  Jonathan Wakely  <jwakely@redhat.com>
+
+       PR libstdc++/112314
+       * include/std/string_view (string_view::remove_suffix): Add
+       debug assertion.
+       * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/debug.cc:
+       New test.
+       * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/debug.cc:
+       New test.
+
+2023-11-02  Jonathan Wakely  <jwakely@redhat.com>
+
+       * acinclude.m4 (GLIBCXX_ENABLE_C99): Fix snprintf checks.
+       * configure: Regenerate.
+
+2023-10-30  François Dumont  <fdumont@gcc.gnu.org>
+
+       * config/abi/pre/gnu-versioned-namespace.ver: Add comment on recently
+       added emul TLS symbols.
+
+2023-10-30  François Dumont  <fdumont@gcc.gnu.org>
+
+       * src/experimental/contract.cc
+       [_GLIBCXX_INLINE_VERSION](handle_contract_violation): Rework comment.
+       Remove weak attribute.
+
+2023-10-29  François Dumont  <fdumont@gcc.gnu.org>
+
+       * config/abi/pre/gnu-versioned-namespace.ver: Add missing emul TLS
+       symbols.
+
+2023-10-29  François Dumont  <fdumont@gcc.gnu.org>
+
+       * src/experimental/contract.cc
+       [_GLIBCXX_INLINE_VERSION](handle_contract_violation): Provide symbol
+       without version namespace decoration for gcc.
+
+2023-10-26  Jonathan Wakely  <jwakely@redhat.com>
+
+       PR libstdc++/112089
+       * include/std/shared_mutex (shared_lock::unlock): Change errc
+       constant to operation_not_permitted.
+       * testsuite/30_threads/shared_lock/locking/112089.cc: New test.
+
+2023-10-26  Jonathan Wakely  <jwakely@redhat.com>
+
+       * testsuite/20_util/duration/io.cc: Double timeout using
+       dg-timeout-factor.
+       * testsuite/std/time/day/io.cc: Likewise.
+       * testsuite/std/time/format.cc: Likewise.
+       * testsuite/std/time/hh_mm_ss/io.cc: Likewise.
+       * testsuite/std/time/month/io.cc: Likewise.
+       * testsuite/std/time/month_day/io.cc: Likewise.
+       * testsuite/std/time/month_day_last/io.cc: Likewise.
+       * testsuite/std/time/month_weekday/io.cc: Likewise.
+       * testsuite/std/time/month_weekday_last/io.cc: Likewise.
+       * testsuite/std/time/weekday/io.cc: Likewise.
+       * testsuite/std/time/weekday_indexed/io.cc: Likewise.
+       * testsuite/std/time/weekday_last/io.cc: Likewise.
+       * testsuite/std/time/year/io.cc: Likewise.
+       * testsuite/std/time/year_month/io.cc: Likewise.
+       * testsuite/std/time/year_month_day/io.cc: Likewise.
+       * testsuite/std/time/year_month_day_last/io.cc: Likewise.
+       * testsuite/std/time/year_month_weekday/io.cc: Likewise.
+       * testsuite/std/time/year_month_weekday_last/io.cc: Likewise.
+       * testsuite/std/time/zoned_time/io.cc: Likewise.
+
+2023-10-25  Jonathan Wakely  <jwakely@redhat.com>
+
+       PR libstdc++/111936
+       * src/libbacktrace/Makefile.am: Add -prefer-pic to libtool
+       compile commands.
+       * src/libbacktrace/Makefile.in: Regenerate.
+
+2023-10-24  Paul M. Bendixen  <paulbendixen@gmail.com>
+
+       * include/Makefile.am: Move cstdarg, cstdalign and cstdbool to
+       freestanding.
+       * include/Makefile.in: Regenerate.
+
+2023-10-22  Iain Sandoe  <iain@sandoe.co.uk>
+
+       * configure: Regenerate.
+       * configure.ac: Handle Darwin rpaths.
+       * src/Makefile.am: Handle Darwin rpaths.
+       * src/Makefile.in: Regenerate.
+
+2023-10-21  Jonathan Wakely  <jwakely@redhat.com>
+
+       * include/bits/basic_string.h (_M_init_local_buf()): New
+       function.
+       (_M_use_local_data()): Use _M_init_local_buf.
+       (basic_string(), basic_string(const Alloc&))
+       (basic_string(basic_string&&))
+       (basic_string(basic_string&&, const Alloc&)): Use
+       _M_init_local_buf instead of _M_use_local_data().
+       * include/bits/basic_string.tcc (swap(basic_string&))
+       (_M_construct(InIter, InIter, input_iterator_tag))
+       (_M_construct(InIter, InIter, forward_iterator_tag))
+       (_M_construct(size_type, CharT), reserve()): Likewise.
+
+2023-10-21  Benjamin Brock  <brock@cs.berkeley.edu>
+
+       * include/std/ranges (zip_view, adjacent_view): Implement
+       workaround for LLVM-61763.
+
+2023-10-21  Dimitrij Mijoski  <dmjpp@hotmail.com>
+
+       * testsuite/22_locale/codecvt/codecvt_unicode.h: Test length()
+
+2023-10-21  Jonathan Wakely  <jwakely@redhat.com>
+
+       * include/bits/fs_dir.h (operator==(default_sentinel_t)): Fix
+       indentation.
+
+2023-10-20  Marek Polacek  <polacek@redhat.com>
+
+       PR testsuite/111883
+       * include/std/charconv (from_chars): Add explicit casts.
+
+2023-10-19  François Dumont  <fdumont@gcc.gnu.org>
+
+       * include/bits/hashtable_policy.h
+       (_Hash_code_base::_M_hash_code(const _Hash&, const _Hash_node_value<>&)): Remove.
+       (_Hash_code_base::_M_hash_code<_H2>(const _H2&, const _Hash_node_value<>&)): Remove.
+       * include/bits/hashtable.h
+       (_M_src_hash_code<_H2>(const _H2&, const key_type&, const __node_value_type&)): New.
+       (_M_merge_unique<>, _M_merge_multi<>): Use latter.
+       * testsuite/23_containers/unordered_map/modifiers/merge.cc
+       (test04, test05, test06): New test cases.
+
+2023-10-13  Jakub Jelinek  <jakub@redhat.com>
+
+       * testsuite/tr1/8_c_compatibility/cstdio/functions.cc (test01):
+       Initialize stream to va_arg(ap, FILE*) rather than 0.
+       * testsuite/tr1/8_c_compatibility/cwchar/functions.cc (test01):
+       Likewise.
+
+2023-10-13  Hans-Peter Nilsson  <hp@axis.com>
+
+       * testsuite/29_atomics/atomic/compare_exchange_padding.cc,
+       testsuite/29_atomics/atomic_flag/clear/1.cc,
+       testsuite/29_atomics/atomic_flag/cons/value_init.cc,
+       testsuite/29_atomics/atomic_flag/test_and_set/explicit.cc,
+       testsuite/29_atomics/atomic_flag/test_and_set/implicit.cc,
+       testsuite/29_atomics/atomic_ref/compare_exchange_padding.cc,
+       testsuite/29_atomics/atomic_ref/generic.cc,
+       testsuite/29_atomics/atomic_ref/integral.cc,
+       testsuite/29_atomics/atomic_ref/pointer.cc: Replace
+       dg-require-thread-fence with dg-require-atomic-cmpxchg-word.
+
+2023-10-13  Hans-Peter Nilsson  <hp@axis.com>
+
+       * testsuite/lib/dg-options.exp (dg-require-atomic-cmpxchg-word):
+       New proc.
+       * testsuite/lib/libstdc++.exp (check_v3_target_atomic_cmpxchg_word):
+       Ditto.
+
+2023-10-05  François Dumont  <fdumont@gcc.gnu.org>
+
+       * config/abi/pre/gnu-versioned-namespace.ver: Add missing symbols
+       for _Float{16,32,64,128,32x,64x,128x}.
+
+2023-10-04  Tom Tromey  <tromey@adacore.com>
+
+       * python/libstdcxx/v6/printers.py
+       (StdExpAnyPrinter.__init__): Qualify call to
+       _string_types.
+
+2023-10-04  Tom Tromey  <tromey@adacore.com>
+
+       * python/libstdcxx/v6/printers.py: Assume that
+       _versioned_namespace is non-None.
+       * python/libstdcxx/v6/xmethods.py (is_specialization_of):
+       Assume that _versioned_namespace is non-None.
+
+2023-10-04  Tom Tromey  <tromey@adacore.com>
+
+       * python/libstdcxx/v6/xmethods.py (_versioned_namespace):
+       Define.
+
+2023-09-29  Dimitrij Mijoski  <dmjpp@hotmail.com>
+
+       PR libstdc++/108976
+       * src/c++11/codecvt.cc (read_utf8_code_point): Fix handing of
+       surrogates in UTF-8.
+       (ucs4_out): Fix handling of surrogates in UCS-4 -> UTF-8.
+       (ucs4_in): Fix handling of range with odd number of bytes.
+       (ucs4_out): Fix handling of surrogates in UCS-4 -> UTF-16.
+       (ucs2_out): Fix handling of surrogates in UCS-2 -> UTF-16.
+       (ucs2_in): Fix handling of range with odd number of bytes.
+       (__codecvt_utf16_base<char16_t>::do_in): Likewise.
+       (__codecvt_utf16_base<char32_t>::do_in): Likewise.
+       (__codecvt_utf16_base<wchar_t>::do_in): Likewise.
+       * testsuite/22_locale/codecvt/codecvt_unicode.cc: Renames, add
+       tests for codecvt_utf16<char16_t> and codecvt_utf16<char32_t>.
+       * testsuite/22_locale/codecvt/codecvt_unicode.h: Refactor UTF-8
+       testing functions for char8_t, add more test cases for errors,
+       add testing functions for codecvt_utf16.
+       * testsuite/22_locale/codecvt/codecvt_unicode_wchar_t.cc:
+       Renames, add tests for codecvt_utf16<whchar_t>.
+       * testsuite/22_locale/codecvt/codecvt_utf16/79980.cc (test06):
+       Fix test.
+       * testsuite/22_locale/codecvt/codecvt_unicode_char8_t.cc: New
+       test.
+
+2023-09-29  Nathaniel Shead  <nathanieloshead@gmail.com>
+
+       * include/bits/basic_string.h: (basic_string(basic_string&&)):
+       Activate _M_local_buf when needed.
+       (basic_string(basic_string&&, const _Alloc&)): Likewise.
+       * include/bits/basic_string.tcc: (basic_string::swap): Likewise.
+       * include/std/variant: (__detail::__variant::__construct_n): New.
+       (__detail::__variant::__emplace): Use __construct_n.
+
+2023-09-28  Tom Tromey  <tromey@adacore.com>
+
+       * python/libstdcxx/v6/printers.py (Printer.add_version)
+       (add_one_template_type_printer)
+       (FilteringTypePrinter.add_one_type_printer): Use Python
+       "not in" operator.
+
+2023-09-28  Tom Tromey  <tromey@adacore.com>
+
+       * python/libstdcxx/v6/printers.py (std_ratio_t_tuple):
+       Remove.
+
+2023-09-28  Tom Tromey  <tromey@adacore.com>
+
+       * python/libstdcxx/v6/printers.py
+       (StdExpOptionalPrinter.__init__, lookup_node_type):
+       Remove unused variables.
+
+2023-09-28  Tom Tromey  <tromey@adacore.com>
+
+       * python/libstdcxx/v6/printers.py: Don't import 'os'.
+       * python/libstdcxx/v6/__init__.py: Don't import 'gdb'.
+
+2023-09-28  Tom Tromey  <tromey@adacore.com>
+
+       * python/libstdcxx/v6/printers.py: Use gdb.ValuePrinter
+       everywhere.  Rename members to start with "_".
+
+2023-09-28  Tom Tromey  <tromey@adacore.com>
+
+       * testsuite/lib/gdb-test.exp (gdb-test): Enable Python
+       stack traces from gdb.
+
+2023-09-28  Jonathan Wakely  <jwakely@redhat.com>
+
+       * python/libstdcxx/v6/xmethods.py (is_specialization_of): Define
+       new function.
+       (ArrayMethodsMatcher, DequeMethodsMatcher)
+       (ForwardListMethodsMatcher, ListMethodsMatcher)
+       (VectorMethodsMatcher, AssociativeContainerMethodsMatcher)
+       (UniquePtrGetWorker, UniquePtrMethodsMatcher)
+       (SharedPtrSubscriptWorker, SharedPtrMethodsMatcher): Use
+       is_specialization_of instead of re.match.
+
+2023-09-28  Jonathan Wakely  <jwakely@redhat.com>
+
+       * python/libstdcxx/v6/printers.py: Break long lines. Use raw
+       strings for regular expressions. Add whitespace around
+       operators.
+       (is_member_of_namespace): Use isinstance to check type.
+       (is_specialization_of): Likewise. Adjust template_name
+       for versioned namespace instead of duplicating the re.match
+       call.
+       (StdExpAnyPrinter._string_types): New static method.
+       (StdExpAnyPrinter.to_string): Use _string_types.
+
+2023-09-28  Jonathan Wakely  <jwakely@redhat.com>
+
+       * python/libstdcxx/v6/printers.py: Format docstrings according
+       to PEP 257.
+       * python/libstdcxx/v6/xmethods.py: Likewise.
+
+2023-09-28  Tim Song  <t.canens.cpp@gmail.com>
+
+       PR libstdc++/111050
+       * include/bits/hashtable_policy.h
+       (_Hash_node_value_base<>::_M_valptr(), _Hash_node_value_base<>::_M_v())
+       Add [[__gnu__::__always_inline__]].
+
+2023-09-27  Jonathan Wakely  <jwakely@redhat.com>
+
+       * python/libstdcxx/v6/printers.py (StdChronoTimeZoneRulePrinter):
+       Fix incorrect number of replacement fields.
+
+2023-09-26  Hans-Peter Nilsson  <hp@axis.com>
+
+       * testsuite/29_atomics/atomic_flag/cons/value_init.cc: Add
+       dg-require-thread-fence.
+
+2023-09-25  Patrick Palka  <ppalka@redhat.com>
+
+       * include/std/charconv (__detail::__integer_to_chars_result_type):
+       Remove.
+       (__detail::__to_chars_16): Use to_chars_result as return type.
+       (__detail::__to_chars_10): Likewise.
+       (__detail::__to_chars_8): Likewise.
+       (__detail::__to_chars_2): Likewise.
+       (__detail::__to_chars_i): Likewise.
+       (__detail::__integer_from_chars_result_type): Inline the
+       constraint into ...
+       (from_chars): ... here.  Use __is_standard_integer in the
+       constraint.  Encode constraint as a defaulted non-type template
+       parameter instead of within the return type.
+
+2023-09-25  John David Anglin  <danglin@gcc.gnu.org>
+
+       * config/abi/post/hppa-linux-gnu/baseline_symbols.txt: Update.
+
+2023-09-25  Jonathan Wakely  <jwakely@redhat.com>
+
+       PR libstdc++/111511
+       PR c++/111512
+       * include/std/array (to_array): Cast memcpy arguments to void*.
+       * testsuite/23_containers/array/creation/111512.cc: New test.
+
+2023-09-25  Jonathan Wakely  <jwakely@redhat.com>
+
+       * include/bits/move.h (forward_list): Define for C++23.
+       * include/bits/version.def (forward_like): Define.
+       * include/bits/version.h: Regenerate.
+       * include/std/utility (__glibcxx_want_forward_like): Define.
+       * testsuite/20_util/forward_like/1.cc: New test.
+       * testsuite/20_util/forward_like/2_neg.cc: New test.
+       * testsuite/20_util/forward_like/version.cc: New test.
+
+2023-09-19  Marek Polacek  <polacek@redhat.com>
+
+       * testsuite/20_util/allocator/105975.cc: Add dg-error.
+
+2023-09-18  Patrick Palka  <ppalka@redhat.com>
+
+       PR c++/63198
+       PR c++/18474
+       * testsuite/26_numerics/random/discard_block_engine/cons/seed_seq2.cc:
+       Make data member seed_seq::called mutable.
+       * testsuite/26_numerics/random/independent_bits_engine/cons/seed_seq2.cc:
+       Likewise.
+       * testsuite/26_numerics/random/linear_congruential_engine/cons/seed_seq2.cc:
+       Likewise.
+       * testsuite/26_numerics/random/mersenne_twister_engine/cons/seed_seq2.cc:
+       Likewise.
+       * testsuite/26_numerics/random/shuffle_order_engine/cons/seed_seq2.cc:
+       Likewise.
+       * testsuite/26_numerics/random/subtract_with_carry_engine/cons/seed_seq2.cc:
+       Likewise.
+       * testsuite/ext/random/simd_fast_mersenne_twister_engine/cons/seed_seq2.cc:
+       Likewise.
+
+2023-09-18  Jonathan Wakely  <jwakely@redhat.com>
+
+       * doc/xml/manual/status_cxx2020.xml: Tweak P1466R3 status.
+       * doc/html/manual/status.html: Regenerate.
+
+2023-09-18  Jonathan Wakely  <jwakely@redhat.com>
+
+       * doc/xml/manual/configure.xml: Use conventional option name.
+       * doc/xml/manual/status_cxx2020.xml: Update.
+       * doc/xml/manual/status_cxx2023.xml: Update.
+       * doc/html/*: Regenerate.
+
+2023-09-18  Jonathan Wakely  <jwakely@redhat.com>
+
+       * doc/xml/manual/intro.xml: Clarify that building libstdc++
+       separately from GCC is not supported.
+       * doc/xml/manual/prerequisites.xml: Note msgfmt prerequisite for
+       testing.
+       * doc/html/manual/setup.html: Regenerate.
+
+2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
+
+       * testsuite/29_atomics/atomic_ref/wait_notify.cc: Do not
+       restrict to pthreads targets.
+       * testsuite/30_threads/jthread/3.cc: Likewise.
+       * testsuite/30_threads/semaphore/100806.cc: Likewise.
+       * testsuite/30_threads/semaphore/try_acquire.cc: Likewise.
+       * testsuite/30_threads/semaphore/try_acquire_for.cc: Likewise.
+       * testsuite/30_threads/semaphore/try_acquire_posix.cc: Likewise.
+
+2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
+
+       * testsuite/18_support/coroutines/95917.cc: Remove dg-options
+       -std=gnu++2a.
+       * testsuite/18_support/coroutines/hash.cc: Likewise.
+       * testsuite/18_support/coroutines/lwg3460.cc: Likewise.
+       * testsuite/18_support/destroying_delete.cc: Likewise.
+       * testsuite/18_support/source_location/1.cc: Likewise.
+       * testsuite/18_support/source_location/consteval.cc: Likewise.
+       * testsuite/18_support/source_location/version.cc: Likewise.
+       * testsuite/19_diagnostics/error_category/operators/three_way.cc:
+       Likewise.
+       * testsuite/19_diagnostics/error_code/operators/three_way.cc:
+       Likewise.
+       * testsuite/19_diagnostics/error_condition/operators/three_way.cc:
+       Likewise.
+       * testsuite/19_diagnostics/stacktrace/output.cc: Likewise.
+       * testsuite/26_numerics/adjacent_difference/lwg2055.cc:
+       Likewise.
+       * testsuite/26_numerics/bit/bit.count/countl_zero.cc: Likewise.
+       * testsuite/26_numerics/bit/bit.count/countr_one.cc: Likewise.
+       * testsuite/26_numerics/bit/bit.count/countr_zero.cc: Likewise.
+       * testsuite/26_numerics/bit/bit.count/popcount.cc: Likewise.
+       * testsuite/26_numerics/bit/bit.pow.two/bit_ceil.cc: Likewise.
+       * testsuite/26_numerics/bit/bit.pow.two/has_single_bit.cc:
+       Likewise.
+       * testsuite/28_regex/iterators/regex_iterator/lwg3719.cc:
+       Likewise.
+       * testsuite/28_regex/iterators/regex_token_iterator/lwg3719.cc:
+       Likewise.
+       * testsuite/28_regex/sub_match/compare_c++20.cc: Likewise.
+       * testsuite/experimental/filesystem/iterators/106201.cc:
+       Likewise.
+       * testsuite/experimental/scopeguard/exit.cc: Likewise.
+       * testsuite/experimental/scopeguard/uniqueres.cc: Likewise.
+
+2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
+
+       * testsuite/30_threads/barrier/1.cc: Remove dg-options
+       -std=gnu++20.
+       * testsuite/30_threads/barrier/2.cc: Likewise.
+       * testsuite/30_threads/barrier/arrive.cc: Likewise.
+       * testsuite/30_threads/barrier/arrive_and_drop.cc: Likewise.
+       * testsuite/30_threads/barrier/arrive_and_wait.cc: Likewise.
+       * testsuite/30_threads/barrier/completion.cc: Likewise.
+       * testsuite/30_threads/condition_variable/members/clock_neg.cc:
+       Likewise.
+       * testsuite/30_threads/condition_variable_any/members/clock_neg.cc:
+       Likewise.
+       * testsuite/30_threads/condition_variable_any/stop_token/1.cc:
+       Likewise.
+       * testsuite/30_threads/condition_variable_any/stop_token/2.cc:
+       Likewise.
+       * testsuite/30_threads/future/members/clock_neg.cc: Likewise.
+       * testsuite/30_threads/headers/stop_token/synopsis.cc: Likewise.
+       * testsuite/30_threads/headers/thread/types_std_c++20.cc:
+       Likewise.
+       * testsuite/30_threads/jthread/1.cc: Likewise.
+       * testsuite/30_threads/jthread/100612.cc: Likewise.
+       * testsuite/30_threads/jthread/95989.cc: Likewise.
+       * testsuite/30_threads/jthread/jthread.cc: Likewise.
+       * testsuite/30_threads/jthread/version.cc: Likewise.
+       * testsuite/30_threads/latch/1.cc: Likewise.
+       * testsuite/30_threads/latch/2.cc: Likewise.
+       * testsuite/30_threads/latch/3.cc: Likewise.
+       * testsuite/30_threads/recursive_timed_mutex/try_lock_until/clock_neg.cc:
+       Likewise.
+       * testsuite/30_threads/semaphore/1.cc: Likewise.
+       * testsuite/30_threads/semaphore/2.cc: Likewise.
+       * testsuite/30_threads/semaphore/least_max_value_neg.cc:
+       Likewise.
+       * testsuite/30_threads/semaphore/try_acquire_until.cc: Likewise.
+       * testsuite/30_threads/shared_future/members/clock_neg.cc:
+       Likewise.
+       * testsuite/30_threads/shared_lock/locking/clock_neg.cc:
+       Likewise.
+       * testsuite/30_threads/shared_timed_mutex/try_lock_until/clock_neg.cc:
+       Likewise.
+       * testsuite/30_threads/stop_token/1.cc: Likewise.
+       * testsuite/30_threads/stop_token/2.cc: Likewise.
+       * testsuite/30_threads/stop_token/stop_callback.cc: Likewise.
+       * testsuite/30_threads/stop_token/stop_callback/deadlock.cc:
+       Likewise.
+       * testsuite/30_threads/stop_token/stop_callback/destructible_neg.cc:
+       Likewise.
+       * testsuite/30_threads/stop_token/stop_callback/invocable_neg.cc:
+       Likewise.
+       * testsuite/30_threads/stop_token/stop_callback/invoke.cc:
+       Likewise.
+       * testsuite/30_threads/stop_token/stop_source.cc: Likewise.
+       * testsuite/30_threads/stop_token/stop_source/assign.cc:
+       Likewise.
+       * testsuite/30_threads/stop_token/stop_token.cc: Likewise.
+       * testsuite/30_threads/stop_token/stop_token/stop_possible.cc:
+       Likewise.
+       * testsuite/30_threads/thread/id/operators_c++20.cc: Likewise.
+       * testsuite/30_threads/timed_mutex/try_lock_until/clock_neg.cc:
+       Likewise.
+       * testsuite/30_threads/unique_lock/locking/clock_neg.cc:
+       Likewise.
+
+2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
+
+       * testsuite/27_io/basic_istream/extractors_character/char/lwg2499.cc:
+       Remove dg-options -std=gnu++2a.
+       * testsuite/27_io/basic_istream/extractors_character/char/lwg2499_neg.cc:
+       Likewise.
+       * testsuite/27_io/basic_istream/extractors_character/wchar_t/lwg2499.cc:
+       Likewise.
+       * testsuite/27_io/basic_istream/extractors_character/wchar_t/lwg2499_neg.cc:
+       Likewise.
+       * testsuite/27_io/basic_istringstream/cons/char/1.cc: Likewise.
+       * testsuite/27_io/basic_istringstream/cons/wchar_t/1.cc:
+       Likewise.
+       * testsuite/27_io/basic_istringstream/str/char/2.cc: Likewise.
+       * testsuite/27_io/basic_istringstream/str/wchar_t/2.cc:
+       Likewise.
+       * testsuite/27_io/basic_istringstream/view/char/1.cc: Likewise.
+       * testsuite/27_io/basic_istringstream/view/wchar_t/1.cc:
+       Likewise.
+       * testsuite/27_io/basic_ostream/emit/1.cc: Likewise.
+       * testsuite/27_io/basic_ostream/inserters_character/char/deleted.cc:
+       Likewise.
+       * testsuite/27_io/basic_ostream/inserters_character/wchar_t/deleted.cc:
+       Likewise.
+       * testsuite/27_io/basic_ostringstream/cons/char/1.cc: Likewise.
+       * testsuite/27_io/basic_ostringstream/cons/wchar_t/1.cc:
+       Likewise.
+       * testsuite/27_io/basic_ostringstream/str/char/3.cc: Likewise.
+       * testsuite/27_io/basic_ostringstream/str/wchar_t/3.cc:
+       Likewise.
+       * testsuite/27_io/basic_ostringstream/view/char/1.cc: Likewise.
+       * testsuite/27_io/basic_ostringstream/view/wchar_t/1.cc:
+       Likewise.
+       * testsuite/27_io/basic_stringbuf/cons/char/2.cc: Likewise.
+       * testsuite/27_io/basic_stringbuf/cons/wchar_t/2.cc: Likewise.
+       * testsuite/27_io/basic_stringbuf/str/char/4.cc: Likewise.
+       * testsuite/27_io/basic_stringbuf/str/wchar_t/4.cc: Likewise.
+       * testsuite/27_io/basic_stringbuf/view/char/1.cc: Likewise.
+       * testsuite/27_io/basic_stringbuf/view/wchar_t/1.cc: Likewise.
+       * testsuite/27_io/basic_stringstream/cons/char/1.cc: Likewise.
+       * testsuite/27_io/basic_stringstream/cons/char/97719.cc:
+       Likewise.
+       * testsuite/27_io/basic_stringstream/cons/wchar_t/1.cc:
+       Likewise.
+       * testsuite/27_io/basic_stringstream/str/char/5.cc: Likewise.
+       * testsuite/27_io/basic_stringstream/str/wchar_t/5.cc.cc:
+       Likewise.
+       * testsuite/27_io/basic_stringstream/view/char/1.cc: Likewise.
+       * testsuite/27_io/basic_stringstream/view/wchar_t/1.cc:
+       Likewise.
+       * testsuite/27_io/basic_syncbuf/1.cc: Likewise.
+       * testsuite/27_io/basic_syncbuf/2.cc: Likewise.
+       * testsuite/27_io/basic_syncbuf/basic_ops/1.cc: Likewise.
+       * testsuite/27_io/basic_syncbuf/requirements/types.cc: Likewise.
+       * testsuite/27_io/basic_syncbuf/sync_ops/1.cc: Likewise.
+       * testsuite/27_io/basic_syncstream/1.cc: Likewise.
+       * testsuite/27_io/basic_syncstream/2.cc: Likewise.
+       * testsuite/27_io/basic_syncstream/basic_ops/1.cc: Likewise.
+       * testsuite/27_io/basic_syncstream/requirements/types.cc:
+       Likewise.
+       * testsuite/27_io/filesystem/iterators/106201.cc: Likewise.
+       * testsuite/27_io/filesystem/iterators/lwg3719.cc: Likewise.
+       * testsuite/27_io/filesystem/path/factory/u8path-depr.cc:
+       Likewise.
+       * testsuite/27_io/filesystem/path/nonmember/cmp_c++20.cc:
+       Likewise.
+
+2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
+
+       * testsuite/26_numerics/accumulate/constexpr.cc: Remove
+       dg-options -std=gnu++2a.
+       * testsuite/26_numerics/accumulate/lwg2055.cc: Likewise.
+       * testsuite/26_numerics/adjacent_difference/constexpr.cc:
+       Likewise.
+       * testsuite/26_numerics/bit/bit.cast/105027.cc: Likewise.
+       * testsuite/26_numerics/bit/bit.cast/bit_cast.cc: Likewise.
+       * testsuite/26_numerics/bit/bit.cast/version.cc: Likewise.
+       * testsuite/26_numerics/bit/bit.count/countl_one.cc: Likewise.
+       * testsuite/26_numerics/bit/bit.pow.two/bit_ceil_neg.cc:
+       Likewise.
+       * testsuite/26_numerics/bit/bit.pow.two/bit_floor.cc: Likewise.
+       * testsuite/26_numerics/bit/bit.pow.two/bit_width.cc: Likewise.
+       * testsuite/26_numerics/bit/bit.pow.two/lwg3656.cc: Likewise.
+       * testsuite/26_numerics/bit/bit.rotate/rotl.cc: Likewise.
+       * testsuite/26_numerics/bit/bit.rotate/rotr.cc: Likewise.
+       * testsuite/26_numerics/bit/header-2.cc: Likewise.
+       * testsuite/26_numerics/bit/header.cc: Likewise.
+       * testsuite/26_numerics/complex/1.cc: Likewise.
+       * testsuite/26_numerics/complex/2.cc: Likewise.
+       * testsuite/26_numerics/complex/comparison_operators/more_constexpr.cc:
+       Likewise.
+       * testsuite/26_numerics/complex/operators/more_constexpr.cc:
+       Likewise.
+       * testsuite/26_numerics/complex/requirements/more_constexpr.cc:
+       Likewise.
+       * testsuite/26_numerics/complex/value_operations/more_constexpr.cc:
+       Likewise.
+       * testsuite/26_numerics/endian/1.cc: Likewise.
+       * testsuite/26_numerics/endian/2.cc: Likewise.
+       * testsuite/26_numerics/endian/3.cc: Likewise.
+       * testsuite/26_numerics/exclusive_scan/constexpr.cc: Likewise.
+       * testsuite/26_numerics/inclusive_scan/constexpr.cc: Likewise.
+       * testsuite/26_numerics/inner_product/constexpr.cc: Likewise.
+       * testsuite/26_numerics/inner_product/lwg2055.cc: Likewise.
+       * testsuite/26_numerics/iota/constexpr.cc: Likewise.
+       * testsuite/26_numerics/lerp/1.cc: Likewise.
+       * testsuite/26_numerics/lerp/constexpr.cc: Likewise.
+       * testsuite/26_numerics/lerp/version.cc: Likewise.
+       * testsuite/26_numerics/midpoint/floating.cc: Likewise.
+       * testsuite/26_numerics/midpoint/integral.cc: Likewise.
+       * testsuite/26_numerics/midpoint/pointer.cc: Likewise.
+       * testsuite/26_numerics/midpoint/pointer_neg.cc: Likewise.
+       * testsuite/26_numerics/midpoint/version.cc: Likewise.
+       * testsuite/26_numerics/numbers/1.cc: Likewise.
+       * testsuite/26_numerics/numbers/2.cc: Likewise.
+       * testsuite/26_numerics/numbers/3.cc: Likewise.
+       * testsuite/26_numerics/numbers/float128.cc: Likewise.
+       * testsuite/26_numerics/numbers/nonfloat_neg.cc: Likewise.
+       * testsuite/26_numerics/partial_sum/constexpr.cc: Likewise.
+       * testsuite/26_numerics/partial_sum/lwg2055.cc: Likewise.
+       * testsuite/26_numerics/random/concept.cc: Likewise.
+       * testsuite/26_numerics/reduce/constexpr.cc: Likewise.
+       * testsuite/26_numerics/slice/compare.cc: Likewise.
+       * testsuite/26_numerics/transform_exclusive_scan/constexpr.cc:
+       Likewise.
+       * testsuite/26_numerics/transform_inclusive_scan/constexpr.cc:
+       Likewise.
+       * testsuite/26_numerics/transform_reduce/constexpr.cc: Likewise.
+
+2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
+
+       * testsuite/24_iterators/aliases.cc: Remove dg-options
+       -std=gnu++2a.
+       * testsuite/24_iterators/associated_types/incrementable.traits.cc:
+       Likewise.
+       * testsuite/24_iterators/associated_types/iterator.traits.cc:
+       Likewise.
+       * testsuite/24_iterators/associated_types/readable.traits.cc:
+       Likewise.
+       * testsuite/24_iterators/back_insert_iterator/constexpr.cc:
+       Likewise.
+       * testsuite/24_iterators/back_insert_iterator/pr93884.cc:
+       Likewise.
+       * testsuite/24_iterators/bidirectional/concept.cc: Likewise.
+       * testsuite/24_iterators/common_iterator/1.cc: Likewise.
+       * testsuite/24_iterators/common_iterator/100823.cc: Likewise.
+       * testsuite/24_iterators/common_iterator/2.cc: Likewise.
+       * testsuite/24_iterators/contiguous/concept.cc: Likewise.
+       * testsuite/24_iterators/contiguous/tag.cc: Likewise.
+       * testsuite/24_iterators/counted_iterator/1.cc: Likewise.
+       * testsuite/24_iterators/counted_iterator/lwg3389.cc: Likewise.
+       * testsuite/24_iterators/counted_iterator/lwg3643.cc: Likewise.
+       * testsuite/24_iterators/customization_points/92894.cc:
+       Likewise.
+       * testsuite/24_iterators/customization_points/iter_move.cc:
+       Likewise.
+       * testsuite/24_iterators/customization_points/iter_swap.cc:
+       Likewise.
+       * testsuite/24_iterators/customization_points/lwg3420.cc:
+       Likewise.
+       * testsuite/24_iterators/forward/concept.cc: Likewise.
+       * testsuite/24_iterators/front_insert_iterator/constexpr.cc:
+       Likewise.
+       * testsuite/24_iterators/front_insert_iterator/pr93884.cc:
+       Likewise.
+       * testsuite/24_iterators/headers/iterator/synopsis_c++20.cc:
+       Likewise.
+       * testsuite/24_iterators/indirect_callable/92894.cc: Likewise.
+       * testsuite/24_iterators/indirect_callable/projected-adl.cc:
+       Likewise.
+       * testsuite/24_iterators/indirect_callable/projected.cc:
+       Likewise.
+       * testsuite/24_iterators/input/concept.cc: Likewise.
+       * testsuite/24_iterators/insert_iterator/constexpr.cc: Likewise.
+       * testsuite/24_iterators/istream_iterator/cons/sentinel.cc:
+       Likewise.
+       * testsuite/24_iterators/istream_iterator/sentinel.cc: Likewise.
+       * testsuite/24_iterators/istreambuf_iterator/cons/sentinel.cc:
+       Likewise.
+       * testsuite/24_iterators/istreambuf_iterator/sentinel.cc:
+       Likewise.
+       * testsuite/24_iterators/move_iterator/cust.cc: Likewise.
+       * testsuite/24_iterators/move_iterator/dr3435.cc: Likewise.
+       * testsuite/24_iterators/move_iterator/input_iterator.cc:
+       Likewise.
+       * testsuite/24_iterators/move_iterator/lwg3390.cc: Likewise.
+       * testsuite/24_iterators/move_iterator/lwg3391.cc: Likewise.
+       * testsuite/24_iterators/move_iterator/move_only.cc: Likewise.
+       * testsuite/24_iterators/move_iterator/p2520r0.cc: Likewise.
+       * testsuite/24_iterators/move_iterator/rel_ops_c++20.cc:
+       Likewise.
+       * testsuite/24_iterators/move_iterator/sentinel.cc: Likewise.
+       * testsuite/24_iterators/normal_iterator/cmp_c++20.cc: Likewise.
+       * testsuite/24_iterators/output/concept.cc: Likewise.
+       * testsuite/24_iterators/random_access/concept.cc: Likewise.
+       * testsuite/24_iterators/range_access/range_access_cpp20.cc:
+       Likewise.
+       * testsuite/24_iterators/range_access/range_access_cpp20_neg.cc:
+       Likewise.
+       * testsuite/24_iterators/range_operations/100768.cc: Likewise.
+       * testsuite/24_iterators/range_operations/advance.cc: Likewise.
+       * testsuite/24_iterators/range_operations/advance_overflow.cc:
+       Likewise.
+       * testsuite/24_iterators/range_operations/distance.cc: Likewise.
+       * testsuite/24_iterators/range_operations/lwg3392.cc: Likewise.
+       * testsuite/24_iterators/range_operations/next.cc: Likewise.
+       * testsuite/24_iterators/range_operations/prev.cc: Likewise.
+       * testsuite/24_iterators/reverse_iterator/cust.cc: Likewise.
+       * testsuite/24_iterators/reverse_iterator/dr3435.cc: Likewise.
+       * testsuite/24_iterators/reverse_iterator/rel_ops_c++20.cc:
+       Likewise.
+
+2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
+
+       * testsuite/23_containers/array/comparison_operators/96851.cc:
+       Remove dg-options -std=gnu++2a.
+       * testsuite/23_containers/array/comparison_operators/constexpr.cc:
+       Likewise.
+       * testsuite/23_containers/array/creation/1.cc: Likewise.
+       * testsuite/23_containers/array/creation/110167.cc: Likewise.
+       * testsuite/23_containers/array/creation/2.cc: Likewise.
+       * testsuite/23_containers/array/creation/3_neg.cc: Likewise.
+       * testsuite/23_containers/array/requirements/constexpr_fill.cc:
+       Likewise.
+       * testsuite/23_containers/array/requirements/constexpr_swap.cc:
+       Likewise.
+       * testsuite/23_containers/deque/48101-3_neg.cc: Likewise.
+       * testsuite/23_containers/deque/erasure.cc: Likewise.
+       * testsuite/23_containers/deque/modifiers/emplace/92878_92947.cc:
+       Likewise.
+       * testsuite/23_containers/deque/operators/cmp_c++20.cc:
+       Likewise.
+       * testsuite/23_containers/forward_list/48101-3_neg.cc: Likewise.
+       * testsuite/23_containers/forward_list/cmp_c++20.cc: Likewise.
+       * testsuite/23_containers/forward_list/erasure.cc: Likewise.
+       * testsuite/23_containers/forward_list/modifiers/92878_92947.cc:
+       Likewise.
+       * testsuite/23_containers/forward_list/operations/remove_cxx20_return.cc:
+       Likewise.
+       * testsuite/23_containers/forward_list/operations/unique_cxx20_return.cc:
+       Likewise.
+       * testsuite/23_containers/list/48101-3_neg.cc: Likewise.
+       * testsuite/23_containers/list/cmp_c++20.cc: Likewise.
+       * testsuite/23_containers/list/erasure.cc: Likewise.
+       * testsuite/23_containers/list/modifiers/emplace/92878_92947.cc:
+       Likewise.
+       * testsuite/23_containers/list/operations/remove_cxx20_return.cc:
+       Likewise.
+       * testsuite/23_containers/list/operations/unique_cxx20_return.cc:
+       Likewise.
+       * testsuite/23_containers/map/48101-3_neg.cc: Likewise.
+       * testsuite/23_containers/map/erasure.cc: Likewise.
+       * testsuite/23_containers/map/modifiers/emplace/92878_92947.cc:
+       Likewise.
+       * testsuite/23_containers/map/operations/contains.cc: Likewise.
+       * testsuite/23_containers/map/operators/cmp_c++20.cc: Likewise.
+       * testsuite/23_containers/multimap/48101-3_neg.cc: Likewise.
+       * testsuite/23_containers/multimap/modifiers/emplace/92878_92947.cc:
+       Likewise.
+       * testsuite/23_containers/multimap/operations/contains.cc:
+       Likewise.
+       * testsuite/23_containers/multimap/operators/cmp_c++20.cc:
+       Likewise.
+       * testsuite/23_containers/multiset/48101-3_neg.cc: Likewise.
+       * testsuite/23_containers/multiset/modifiers/emplace/92878_92947.cc:
+       Likewise.
+       * testsuite/23_containers/multiset/operations/contains.cc:
+       Likewise.
+       * testsuite/23_containers/multiset/operators/cmp_c++20.cc:
+       Likewise.
+       * testsuite/23_containers/priority_queue/92878_92947.cc:
+       Likewise.
+       * testsuite/23_containers/queue/92878_92947.cc: Likewise.
+       * testsuite/23_containers/queue/cmp_c++20.cc: Likewise.
+       * testsuite/23_containers/set/48101-3_neg.cc: Likewise.
+       * testsuite/23_containers/set/erasure.cc: Likewise.
+       * testsuite/23_containers/set/modifiers/emplace/92878_92947.cc:
+       Likewise.
+       * testsuite/23_containers/set/operations/contains.cc: Likewise.
+       * testsuite/23_containers/set/operators/cmp_c++20.cc: Likewise.
+       * testsuite/23_containers/span/1.cc: Likewise.
+       * testsuite/23_containers/span/101411.cc: Likewise.
+       * testsuite/23_containers/span/2.cc: Likewise.
+       * testsuite/23_containers/span/deduction.cc: Likewise.
+       * testsuite/23_containers/span/explicit.cc: Likewise.
+       * testsuite/23_containers/span/layout_compat.cc: Likewise.
+       * testsuite/23_containers/span/lwg3255.cc: Likewise.
+       * testsuite/23_containers/span/nothrow_cons.cc: Likewise.
+       * testsuite/23_containers/span/trivially_copyable.cc: Likewise.
+       * testsuite/23_containers/stack/92878_92947.cc: Likewise.
+       * testsuite/23_containers/stack/cmp_c++20.cc: Likewise.
+       * testsuite/23_containers/unordered_map/48101-3_neg.cc:
+       Likewise.
+       * testsuite/23_containers/unordered_map/erasure.cc: Likewise.
+       * testsuite/23_containers/unordered_map/modifiers/92878_92947.cc:
+       Likewise.
+       * testsuite/23_containers/unordered_map/operations/1.cc:
+       Likewise.
+       * testsuite/23_containers/unordered_map/operations/contains.cc:
+       Likewise.
+       * testsuite/23_containers/unordered_multimap/48101-3_neg.cc:
+       Likewise.
+       * testsuite/23_containers/unordered_multimap/modifiers/92878_92947.cc:
+       Likewise.
+       * testsuite/23_containers/unordered_multimap/operations/1.cc:
+       Likewise.
+       * testsuite/23_containers/unordered_multimap/operations/contains.cc:
+       Likewise.
+       * testsuite/23_containers/unordered_multiset/48101-3_neg.cc:
+       Likewise.
+       * testsuite/23_containers/unordered_multiset/modifiers/92878_92947.cc:
+       Likewise.
+       * testsuite/23_containers/unordered_multiset/operations/1.cc:
+       Likewise.
+       * testsuite/23_containers/unordered_multiset/operations/contains.cc:
+       Likewise.
+       * testsuite/23_containers/unordered_set/48101-3_neg.cc:
+       Likewise.
+       * testsuite/23_containers/unordered_set/erasure.cc: Likewise.
+       * testsuite/23_containers/unordered_set/modifiers/92878_92947.cc:
+       Likewise.
+       * testsuite/23_containers/unordered_set/operations/1.cc:
+       Likewise.
+       * testsuite/23_containers/unordered_set/operations/contains.cc:
+       Likewise.
+       * testsuite/23_containers/vector/48101-3_neg.cc: Likewise.
+       * testsuite/23_containers/vector/bool/capacity/constexpr.cc:
+       Likewise.
+       * testsuite/23_containers/vector/bool/cmp_c++20.cc: Likewise.
+       * testsuite/23_containers/vector/bool/cons/constexpr.cc:
+       Likewise.
+       * testsuite/23_containers/vector/bool/element_access/constexpr.cc:
+       Likewise.
+       * testsuite/23_containers/vector/bool/iterator_c++20.cc:
+       Likewise.
+       * testsuite/23_containers/vector/bool/modifiers/assign/constexpr.cc:
+       Likewise.
+       * testsuite/23_containers/vector/bool/modifiers/constexpr.cc:
+       Likewise.
+       * testsuite/23_containers/vector/bool/modifiers/swap/constexpr.cc:
+       Likewise.
+       * testsuite/23_containers/vector/capacity/constexpr.cc:
+       Likewise.
+       * testsuite/23_containers/vector/cmp_c++20.cc: Likewise.
+       * testsuite/23_containers/vector/cons/constexpr.cc: Likewise.
+       * testsuite/23_containers/vector/data_access/constexpr.cc:
+       Likewise.
+       * testsuite/23_containers/vector/element_access/constexpr.cc:
+       Likewise.
+       * testsuite/23_containers/vector/erasure.cc: Likewise.
+       * testsuite/23_containers/vector/modifiers/assign/constexpr.cc:
+       Likewise.
+       * testsuite/23_containers/vector/modifiers/constexpr.cc:
+       Likewise.
+       * testsuite/23_containers/vector/modifiers/emplace/92878_92947.cc:
+       Likewise.
+       * testsuite/23_containers/vector/modifiers/swap/constexpr.cc:
+       Likewise.
+       * testsuite/23_containers/vector/requirements/version.cc:
+       Likewise.
+
+2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
+
+       * testsuite/21_strings/basic_string/cons/char/105995.cc: Remove
+       dg-options -std=gnu++20.
+       * testsuite/21_strings/basic_string/cons/char/constexpr.cc:
+       Likewise.
+       * testsuite/21_strings/basic_string/cons/wchar_t/constexpr.cc:
+       Likewise.
+       * testsuite/21_strings/basic_string/erasure.cc: Likewise.
+       * testsuite/21_strings/basic_string/hash/hash_char8_t.cc:
+       Likewise.
+       * testsuite/21_strings/basic_string/literals/constexpr.cc:
+       Likewise.
+       * testsuite/21_strings/basic_string/modifiers/constexpr.cc:
+       Likewise.
+       * testsuite/21_strings/basic_string/modifiers/swap/constexpr-wchar_t.cc:
+       Likewise.
+       * testsuite/21_strings/basic_string/modifiers/swap/constexpr.cc:
+       Likewise.
+       * testsuite/21_strings/basic_string/operations/ends_with/char.cc:
+       Likewise.
+       * testsuite/21_strings/basic_string/operations/ends_with/nonnull.cc:
+       Likewise.
+       * testsuite/21_strings/basic_string/operations/ends_with/wchar_t.cc:
+       Likewise.
+       * testsuite/21_strings/basic_string/operations/starts_with/char.cc:
+       Likewise.
+       * testsuite/21_strings/basic_string/operations/starts_with/nonnull.cc:
+       Likewise.
+       * testsuite/21_strings/basic_string/operations/starts_with/wchar_t.cc:
+       Likewise.
+       * testsuite/21_strings/basic_string/operators/char/cmp_c++20.cc:
+       Likewise.
+       * testsuite/21_strings/basic_string/operators/wchar_t/cmp_c++20.cc:
+       Likewise.
+       * testsuite/21_strings/basic_string_view/cons/char/range.cc:
+       Likewise.
+       * testsuite/21_strings/basic_string_view/operations/copy/char/constexpr.cc:
+       Likewise.
+       * testsuite/21_strings/basic_string_view/operations/copy/wchar_t/constexpr.cc:
+       Likewise.
+       * testsuite/21_strings/basic_string_view/operations/ends_with/char.cc:
+       Likewise.
+       * testsuite/21_strings/basic_string_view/operations/ends_with/nonnull.cc:
+       Likewise.
+       * testsuite/21_strings/basic_string_view/operations/ends_with/wchar_t.cc:
+       Likewise.
+       * testsuite/21_strings/basic_string_view/operations/starts_with/char.cc:
+       Likewise.
+       * testsuite/21_strings/basic_string_view/operations/starts_with/nonnull.cc:
+       Likewise.
+       * testsuite/21_strings/basic_string_view/operations/starts_with/wchar_t.cc:
+       Likewise.
+       * testsuite/21_strings/basic_string_view/operators/char/cmp_c++20.cc:
+       Likewise.
+       * testsuite/21_strings/basic_string_view/operators/wchar_t/cmp_c++20.cc:
+       Likewise.
+       * testsuite/21_strings/basic_string_view/requirements/constexpr_iter.cc:
+       Likewise.
+       * testsuite/21_strings/char_traits/requirements/constexpr_functions_c++20.cc:
+       Likewise.
+
+2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
+
+       * testsuite/20_util/allocator/105975.cc: Remove dg-options
+       -std=gnu++2a.
+       * testsuite/20_util/allocator/rebind_c++20.cc: Likewise.
+       * testsuite/20_util/allocator/requirements/constexpr.cc:
+       Likewise.
+       * testsuite/20_util/allocator/requirements/typedefs_c++20.cc:
+       Likewise.
+       * testsuite/20_util/allocator_traits/header-2.cc: Likewise.
+       * testsuite/20_util/allocator_traits/header.cc: Likewise.
+       * testsuite/20_util/allocator_traits/members/92878_92947.cc:
+       Likewise.
+       * testsuite/20_util/any/assign/92878_92947.cc: Likewise.
+       * testsuite/20_util/any/cons/92878_92947.cc: Likewise.
+       * testsuite/20_util/assume_aligned/1.cc: Likewise.
+       * testsuite/20_util/assume_aligned/2_neg.cc: Likewise.
+       * testsuite/20_util/assume_aligned/3.cc: Likewise.
+       * testsuite/20_util/assume_aligned/97132.cc: Likewise.
+       * testsuite/20_util/bind/constexpr.cc: Likewise.
+       * testsuite/20_util/bitset/operations/96303.cc: Likewise.
+       * testsuite/20_util/common_reference/100894.cc: Likewise.
+       * testsuite/20_util/common_reference/requirements/alias_decl.cc:
+       Likewise.
+       * testsuite/20_util/common_reference/requirements/explicit_instantiation.cc:
+       Likewise.
+       * testsuite/20_util/common_reference/requirements/typedefs.cc:
+       Likewise.
+       * testsuite/20_util/duration/comparison_operators/three_way.cc:
+       Likewise.
+       * testsuite/20_util/exchange/constexpr.cc: Likewise.
+       * testsuite/20_util/exchange/noexcept.cc: Likewise.
+       * testsuite/20_util/from_chars/1_c++20_neg.cc: Likewise.
+       * testsuite/20_util/from_chars/compare.cc: Likewise.
+       * testsuite/20_util/function_objects/bind_front/1.cc: Likewise.
+       * testsuite/20_util/function_objects/bind_front/107784.cc:
+       Likewise.
+       * testsuite/20_util/function_objects/bind_front/111327.cc:
+       Likewise.
+       * testsuite/20_util/function_objects/bind_front/2.cc: Likewise.
+       * testsuite/20_util/function_objects/bind_front/97101.cc:
+       Likewise.
+       * testsuite/20_util/function_objects/bind_front/constexpr.cc:
+       Likewise.
+       * testsuite/20_util/function_objects/constexpr_searcher.cc:
+       Likewise.
+       * testsuite/20_util/function_objects/identity/1.cc: Likewise.
+       * testsuite/20_util/function_objects/invoke/constexpr.cc:
+       Likewise.
+       * testsuite/20_util/function_objects/mem_fn/constexpr.cc:
+       Likewise.
+       * testsuite/20_util/function_objects/not_fn/constexpr.cc:
+       Likewise.
+       * testsuite/20_util/integer_comparisons/1.cc: Likewise.
+       * testsuite/20_util/integer_comparisons/2.cc: Likewise.
+       * testsuite/20_util/integer_comparisons/equal.cc: Likewise.
+       * testsuite/20_util/integer_comparisons/equal_neg.cc: Likewise.
+       * testsuite/20_util/integer_comparisons/greater.cc: Likewise.
+       * testsuite/20_util/integer_comparisons/greater_equal.cc:
+       Likewise.
+       * testsuite/20_util/integer_comparisons/greater_equal_neg.cc:
+       Likewise.
+       * testsuite/20_util/integer_comparisons/greater_neg.cc:
+       Likewise.
+       * testsuite/20_util/integer_comparisons/in_range.cc: Likewise.
+       * testsuite/20_util/integer_comparisons/in_range_neg.cc:
+       Likewise.
+       * testsuite/20_util/integer_comparisons/less.cc: Likewise.
+       * testsuite/20_util/integer_comparisons/less_equal.cc: Likewise.
+       * testsuite/20_util/integer_comparisons/less_equal_neg.cc:
+       Likewise.
+       * testsuite/20_util/integer_comparisons/less_neg.cc: Likewise.
+       * testsuite/20_util/integer_comparisons/not_equal.cc: Likewise.
+       * testsuite/20_util/integer_comparisons/not_equal_neg.cc:
+       Likewise.
+       * testsuite/20_util/is_bounded_array/requirements/explicit_instantiation.cc:
+       Likewise.
+       * testsuite/20_util/is_bounded_array/requirements/typedefs.cc:
+       Likewise.
+       * testsuite/20_util/is_bounded_array/value.cc: Likewise.
+       * testsuite/20_util/is_constant_evaluated/1.cc: Likewise.
+       * testsuite/20_util/is_constant_evaluated/noexcept.cc: Likewise.
+       * testsuite/20_util/is_constructible/92878_92947.cc: Likewise.
+       * testsuite/20_util/is_layout_compatible/is_corresponding_member.cc:
+       Likewise.
+       * testsuite/20_util/is_layout_compatible/value.cc: Likewise.
+       * testsuite/20_util/is_layout_compatible/version.cc: Likewise.
+       * testsuite/20_util/is_nothrow_constructible/value_c++20.cc:
+       Likewise.
+       * testsuite/20_util/is_nothrow_convertible/requirements/explicit_instantiation.cc:
+       Likewise.
+       * testsuite/20_util/is_nothrow_convertible/requirements/typedefs.cc:
+       Likewise.
+       * testsuite/20_util/is_nothrow_convertible/value.cc: Likewise.
+       * testsuite/20_util/is_pod/deprecated-2a.cc: Likewise.
+       * testsuite/20_util/is_pointer_interconvertible/value.cc:
+       Likewise.
+       * testsuite/20_util/is_pointer_interconvertible/version.cc:
+       Likewise.
+       * testsuite/20_util/is_pointer_interconvertible/with_class.cc:
+       Likewise.
+       * testsuite/20_util/is_unbounded_array/requirements/explicit_instantiation.cc:
+       Likewise.
+       * testsuite/20_util/is_unbounded_array/requirements/typedefs.cc:
+       Likewise.
+       * testsuite/20_util/is_unbounded_array/value.cc: Likewise.
+       * testsuite/20_util/optional/assignment/92878_92947.cc:
+       Likewise.
+       * testsuite/20_util/optional/cons/92878_92947.cc: Likewise.
+       * testsuite/20_util/optional/constexpr/assign.cc: Likewise.
+       * testsuite/20_util/optional/constexpr/cons/conv.cc: Likewise.
+       * testsuite/20_util/optional/constexpr/modifiers.cc: Likewise.
+       * testsuite/20_util/optional/constexpr/swap.cc: Likewise.
+       * testsuite/20_util/optional/relops/96269.cc: Likewise.
+       * testsuite/20_util/optional/relops/three_way.cc: Likewise.
+       * testsuite/20_util/pair/comparison_operators/constexpr_c++20.cc:
+       Likewise.
+       * testsuite/20_util/pair/cons/92878_92947.cc: Likewise.
+       * testsuite/20_util/pair/constexpr_assign.cc: Likewise.
+       * testsuite/20_util/pair/constexpr_swap.cc: Likewise.
+       * testsuite/20_util/pair/requirements/structural.cc: Likewise.
+       * testsuite/20_util/pointer_traits/pointer_to_constexpr.cc:
+       Likewise.
+       * testsuite/20_util/polymorphic_allocator/allocate_object.cc:
+       Likewise.
+       * testsuite/20_util/polymorphic_allocator/construct_c++2a.cc:
+       Likewise.
+       * testsuite/20_util/polymorphic_allocator/lwg3237.cc: Likewise.
+       * testsuite/20_util/reference_wrapper/constexpr.cc: Likewise.
+       * testsuite/20_util/reference_wrapper/incomplete.cc: Likewise.
+       * testsuite/20_util/remove_cvref/requirements/alias_decl.cc:
+       Likewise.
+       * testsuite/20_util/remove_cvref/requirements/explicit_instantiation.cc:
+       Likewise.
+       * testsuite/20_util/remove_cvref/value.cc: Likewise.
+       * testsuite/20_util/scoped_allocator/construct_pair_c++2a.cc:
+       Likewise.
+       * testsuite/20_util/shared_ptr/atomic/atomic_shared_ptr.cc:
+       Likewise.
+       * testsuite/20_util/shared_ptr/casts/rval.cc: Likewise.
+       * testsuite/20_util/shared_ptr/comparison/cmp_c++20.cc:
+       Likewise.
+       * testsuite/20_util/shared_ptr/cons/alias-rval.cc: Likewise.
+       * testsuite/20_util/shared_ptr/creation/92878_92947.cc:
+       Likewise.
+       * testsuite/20_util/shared_ptr/creation/array.cc: Likewise.
+       * testsuite/20_util/shared_ptr/creation/overwrite.cc: Likewise.
+       * testsuite/20_util/shared_ptr/creation/version.cc: Likewise.
+       * testsuite/20_util/time_point/4.cc: Likewise.
+       * testsuite/20_util/time_point/comparison_operators/three_way.cc:
+       Likewise.
+       * testsuite/20_util/to_address/1.cc: Likewise.
+       * testsuite/20_util/to_address/1_neg.cc: Likewise.
+       * testsuite/20_util/to_address/debug.cc: Likewise.
+       * testsuite/20_util/to_address/lwg3545.cc: Likewise.
+       * testsuite/20_util/to_chars/compare.cc: Likewise.
+       * testsuite/20_util/tuple/comparison_operators/three_way.cc:
+       Likewise.
+       * testsuite/20_util/tuple/cons/102270.cc: Likewise.
+       * testsuite/20_util/tuple/cons/constexpr_allocator_arg_t.cc:
+       Likewise.
+       * testsuite/20_util/tuple/constexpr_swap.cc: Likewise.
+       * testsuite/20_util/type_identity/requirements/alias_decl.cc:
+       Likewise.
+       * testsuite/20_util/type_identity/requirements/explicit_instantiation.cc:
+       Likewise.
+       * testsuite/20_util/type_identity/requirements/typedefs.cc:
+       Likewise.
+       * testsuite/20_util/typeindex/comparison_operators_c++20.cc:
+       Likewise.
+       * testsuite/20_util/unique_ptr/comparison/compare_c++20.cc:
+       Likewise.
+       * testsuite/20_util/unique_ptr/creation/92878_92947.cc:
+       Likewise.
+       * testsuite/20_util/unique_ptr/creation/for_overwrite.cc:
+       Likewise.
+       * testsuite/20_util/unique_ptr/creation/for_overwrite__neg.cc:
+       Likewise.
+       * testsuite/20_util/unique_ptr/io/lwg2948.cc: Likewise.
+       * testsuite/20_util/unwrap_reference/1.cc: Likewise.
+       * testsuite/20_util/unwrap_reference/2.cc: Likewise.
+       * testsuite/20_util/unwrap_reference/3.cc: Likewise.
+       * testsuite/20_util/uses_allocator/92878_92947.cc: Likewise.
+       * testsuite/20_util/uses_allocator/lwg3527.cc: Likewise.
+       * testsuite/20_util/uses_allocator/make_obj.cc: Likewise.
+       * testsuite/20_util/uses_allocator/uninitialized_construct.cc:
+       Likewise.
+       * testsuite/20_util/variant/92878_92947.cc: Likewise.
+       * testsuite/20_util/variant/95915.cc: Likewise.
+       * testsuite/20_util/variant/constexpr.cc: Likewise.
+       * testsuite/20_util/variant/relops/three_way.cc: Likewise.
+       * testsuite/20_util/variant/visit_neg.cc: Likewise.
+       * testsuite/20_util/variant/visit_r.cc: Likewise.
+       * testsuite/20_util/weak_ptr/atomic_weak_ptr.cc: Likewise.
+
+2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
+
+       * testsuite/18_support/comparisons/algorithms/fallback.cc:
+       Remove dg-options -std=gnu++2a.
+       * testsuite/18_support/comparisons/algorithms/partial_order.cc:
+       Likewise.
+       * testsuite/18_support/comparisons/algorithms/strong_order.cc:
+       Likewise.
+       * testsuite/18_support/comparisons/algorithms/strong_order_floats.cc:
+       Likewise.
+       * testsuite/18_support/comparisons/algorithms/weak_order.cc:
+       Likewise.
+       * testsuite/18_support/comparisons/categories/94565.cc:
+       Likewise.
+       * testsuite/18_support/comparisons/categories/partialord.cc:
+       Likewise.
+       * testsuite/18_support/comparisons/categories/strongord.cc:
+       Likewise.
+       * testsuite/18_support/comparisons/categories/weakord.cc:
+       Likewise.
+       * testsuite/18_support/comparisons/categories/zero_neg.cc:
+       Likewise.
+       * testsuite/18_support/comparisons/common/1.cc: Likewise.
+       * testsuite/18_support/comparisons/object/93479.cc: Likewise.
+       * testsuite/18_support/comparisons/object/lwg3530.cc: Likewise.
+
+2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
+
+       * testsuite/29_atomics/atomic/compare_exchange_padding.cc:
+       Remove dg-options -std=gnu++2a.
+       * testsuite/29_atomics/atomic/cons/value_init.cc: Likewise.
+       * testsuite/29_atomics/atomic/lock_free_aliases.cc: Likewise.
+       * testsuite/29_atomics/atomic/requirements/types_neg.cc:
+       Likewise.
+       * testsuite/29_atomics/atomic/wait_notify/1.cc: Likewise.
+       * testsuite/29_atomics/atomic/wait_notify/100334.cc: Likewise.
+       * testsuite/29_atomics/atomic/wait_notify/102994.cc: Likewise.
+       * testsuite/29_atomics/atomic/wait_notify/2.cc: Likewise.
+       * testsuite/29_atomics/atomic/wait_notify/bool.cc: Likewise.
+       * testsuite/29_atomics/atomic/wait_notify/generic.cc: Likewise.
+       * testsuite/29_atomics/atomic/wait_notify/pointers.cc: Likewise.
+       * testsuite/29_atomics/atomic_flag/cons/value_init.cc: Likewise.
+       * testsuite/29_atomics/atomic_flag/test/explicit.cc: Likewise.
+       * testsuite/29_atomics/atomic_flag/test/implicit.cc: Likewise.
+       * testsuite/29_atomics/atomic_flag/wait_notify/1.cc: Likewise.
+       * testsuite/29_atomics/atomic_float/1.cc: Likewise.
+       * testsuite/29_atomics/atomic_float/95282.cc: Likewise.
+       * testsuite/29_atomics/atomic_float/requirements.cc: Likewise.
+       * testsuite/29_atomics/atomic_float/value_init.cc: Likewise.
+       * testsuite/29_atomics/atomic_float/wait_notify.cc: Likewise.
+       * testsuite/29_atomics/atomic_integral/cons/value_init.cc:
+       Likewise.
+       * testsuite/29_atomics/atomic_integral/wait_notify.cc: Likewise.
+       * testsuite/29_atomics/atomic_ref/compare_exchange_padding.cc:
+       Likewise.
+       * testsuite/29_atomics/atomic_ref/deduction.cc: Likewise.
+       * testsuite/29_atomics/atomic_ref/float.cc: Likewise.
+       * testsuite/29_atomics/atomic_ref/generic.cc: Likewise.
+       * testsuite/29_atomics/atomic_ref/integral.cc: Likewise.
+       * testsuite/29_atomics/atomic_ref/pointer.cc: Likewise.
+       * testsuite/29_atomics/atomic_ref/requirements.cc: Likewise.
+       * testsuite/29_atomics/headers/atomic/types_std_c++20.cc:
+       Likewise.
+       * testsuite/29_atomics/headers/atomic/types_std_c++20_neg.cc:
+       Likewise.
+       * testsuite/29_atomics/headers/atomic/types_std_c++2a.cc:
+       Likewise.
+       * testsuite/29_atomics/headers/atomic/types_std_c++2a_neg.cc:
+       Likewise.
+
+2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
+
+       * testsuite/27_io/basic_filebuf/native_handle/char/1.cc: New test.
+       * testsuite/27_io/basic_filebuf/native_handle/wchar_t/1.cc: New test.
+
+2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
+
+       * acinclude.m4 (GLIBCXX_CHECK_FILEBUF_NATIVE_HANDLES): New
+       macro.
+       * config.h.in: Regenerate.
+       * config/abi/pre/gnu.ver (GLIBCXX_3.4.32): Export new
+       basic_filebuf members.
+       * config/io/basic_file_stdio.cc (__basic_file::native_handle):
+       Define new function.
+       * config/io/basic_file_stdio.h (__basic_file::native_handle):
+       Declare new function.
+       * configure: Regenerate.
+       * configure.ac: Use GLIBCXX_CHECK_FILEBUF_NATIVE_HANDLES.
+       * include/bits/version.def (fstream_native_handles): New macro.
+       * include/bits/version.h: Regenerate.
+       * include/std/fstream (basic_filebuf::native_handle)
+       (basic_fstream::native_handle, basic_ifstream::native_handle)
+       (basic_ofstream::native_handle): New functions.
+       * src/c++11/Makefile.am: Move compilation of basic_file.cc,
+       locale_init.cc and localename.cc to here.
+       * src/c++11/Makefile.in: Regenerate.
+       * src/c++98/locale_init.cc: Moved to...
+       * src/c++11/locale_init.cc: ...here.
+       * src/c++98/localename.cc: Moved to...
+       * src/c++11/localename.cc: ...here.
+       * src/c++98/Makefile.am: Remove basic_file.cc, locale_init.cc
+       and localename.cc from here.
+       * src/c++98/Makefile.in: Regenerate.
+       * testsuite/27_io/basic_filebuf/native_handle/version.cc: New test.
+       * testsuite/27_io/basic_fstream/native_handle/char/1.cc: New test.
+       * testsuite/27_io/basic_fstream/native_handle/wchar_t/1.cc: New test.
+       * testsuite/27_io/basic_ifstream/native_handle/char/1.cc: New test.
+       * testsuite/27_io/basic_ifstream/native_handle/wchar_t/1.cc: New test.
+       * testsuite/27_io/basic_ofstream/native_handle/char/1.cc: New test.
+       * testsuite/27_io/basic_ofstream/native_handle/wchar_t/1.cc: New test.
+
+2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
+
+       * testsuite/libstdc++-dg/conformance.exp: Add log line when
+       using testsuite_files.
+
+2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
+
+       * testsuite/20_util/shared_ptr/atomic/3.cc: Simplify dg
+       directives.
+       * testsuite/20_util/shared_ptr/thread/default_weaktoshared.cc:
+       Likewise.
+       * testsuite/20_util/shared_ptr/thread/mutex_weaktoshared.cc:
+       Likewise.
+       * testsuite/20_util/synchronized_pool_resource/allocate.cc:
+       Likewise.
+       * testsuite/20_util/synchronized_pool_resource/allocate_single.cc:
+       Likewise.
+       * testsuite/20_util/synchronized_pool_resource/cons.cc:
+       Likewise.
+       * testsuite/20_util/synchronized_pool_resource/cons_single.cc:
+       Likewise.
+       * testsuite/20_util/synchronized_pool_resource/is_equal.cc:
+       Likewise.
+       * testsuite/20_util/synchronized_pool_resource/multithreaded.cc:
+       Likewise.
+       * testsuite/20_util/synchronized_pool_resource/options.cc:
+       Likewise.
+       * testsuite/20_util/synchronized_pool_resource/release.cc:
+       Likewise.
+       * testsuite/20_util/synchronized_pool_resource/release_single.cc:
+       Likewise.
+       * testsuite/30_threads/condition_variable_any/stop_token/wait_on.cc:
+       Likewise.
+       * testsuite/30_threads/stop_token/stop_callback/deadlock-mt.cc:
+       Likewise.
+       * testsuite/30_threads/stop_token/stop_callback/destroy.cc:
+       Likewise.
+
+2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
+
+       * testsuite/23_containers/span/back_assert_neg.cc: Remove
+       dg-options and add effective target selector to dg-do. Add
+       no_pch.
+       * testsuite/23_containers/span/back_neg.cc: Likewise.
+       * testsuite/23_containers/span/cons_1_assert_neg.cc: Likewise.
+       * testsuite/23_containers/span/cons_2_assert_neg.cc: Likewise.
+       * testsuite/23_containers/span/first_2_assert_neg.cc: Likewise.
+       * testsuite/23_containers/span/first_assert_neg.cc: Likewise.
+       * testsuite/23_containers/span/first_neg.cc: Likewise.
+       * testsuite/23_containers/span/front_assert_neg.cc: Likewise.
+       * testsuite/23_containers/span/front_neg.cc: Likewise.
+       * testsuite/23_containers/span/index_op_assert_neg.cc: Likewise.
+       * testsuite/23_containers/span/index_op_neg.cc: Likewise.
+       * testsuite/23_containers/span/last_2_assert_neg.cc: Likewise.
+       * testsuite/23_containers/span/last_assert_neg.cc: Likewise.
+       * testsuite/23_containers/span/last_neg.cc: Likewise.
+       * testsuite/23_containers/span/subspan_2_assert_neg.cc:
+       Likewise.
+       * testsuite/23_containers/span/subspan_3_assert_neg.cc:
+       Likewise.
+       * testsuite/23_containers/span/subspan_4_assert_neg.cc:
+       Likewise.
+       * testsuite/23_containers/span/subspan_5_assert_neg.cc:
+       Likewise.
+       * testsuite/23_containers/span/subspan_6_assert_neg.cc:
+       Likewise.
+       * testsuite/23_containers/span/subspan_assert_neg.cc: Likewise.
+       * testsuite/23_containers/span/subspan_neg.cc: Likewise.
+       * testsuite/24_iterators/range_operations/advance_debug_neg.cc:
+       Likewise.
+
+2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
+
+       * testsuite/18_support/headers/limits/synopsis_cxx23.cc: Remove
+       dg-options.
+       * testsuite/18_support/headers/stdfloat/types_std.cc: Likewise.
+       * testsuite/18_support/type_info/constexpr.cc: Likewise.
+       * testsuite/19_diagnostics/stacktrace/current.cc: Likewise.
+       * testsuite/19_diagnostics/stacktrace/entry.cc: Likewise.
+       * testsuite/19_diagnostics/stacktrace/stacktrace.cc: Likewise.
+       * testsuite/19_diagnostics/stacktrace/synopsis.cc: Likewise.
+       * testsuite/19_diagnostics/stacktrace/version.cc: Likewise.
+       * testsuite/20_util/aligned_storage/deprecated-2b.cc: Likewise.
+       * testsuite/20_util/aligned_union/deprecated-2b.cc: Likewise.
+       * testsuite/20_util/bitset/access/constexpr.cc: Likewise.
+       * testsuite/20_util/bitset/cons/constexpr_c++23.cc: Likewise.
+       * testsuite/20_util/bitset/count/constexpr.cc: Likewise.
+       * testsuite/20_util/bitset/ext/constexpr.cc: Likewise.
+       * testsuite/20_util/bitset/operations/constexpr_c++23.cc:
+       Likewise.
+       * testsuite/20_util/bitset/version.cc: Likewise.
+       * testsuite/20_util/from_chars/8.cc: Likewise.
+       * testsuite/20_util/from_chars/constexpr.cc: Likewise.
+       * testsuite/20_util/function/cons/deduction_c++23.cc: Likewise.
+       * testsuite/20_util/function_objects/invoke/4.cc: Likewise.
+       * testsuite/20_util/function_objects/invoke/dangling_ref.cc:
+       Likewise.
+       * testsuite/20_util/is_scoped_enum/value.cc: Likewise.
+       * testsuite/20_util/is_scoped_enum/version.cc: Likewise.
+       * testsuite/20_util/move_only_function/call.cc: Likewise.
+       * testsuite/20_util/move_only_function/cons.cc: Likewise.
+       * testsuite/20_util/move_only_function/move.cc: Likewise.
+       * testsuite/20_util/move_only_function/version.cc: Likewise.
+       * testsuite/20_util/optional/monadic/and_then.cc: Likewise.
+       * testsuite/20_util/optional/monadic/or_else.cc: Likewise.
+       * testsuite/20_util/optional/monadic/or_else_neg.cc: Likewise.
+       * testsuite/20_util/optional/monadic/pr109242.cc: Likewise.
+       * testsuite/20_util/optional/monadic/transform.cc: Likewise.
+       * testsuite/20_util/pair/p2321r2.cc: Likewise.
+       * testsuite/20_util/reference_from_temporary/value.cc: Likewise.
+       * testsuite/20_util/reference_from_temporary/value2.cc:
+       Likewise.
+       * testsuite/20_util/reference_from_temporary/version.cc:
+       Likewise.
+       * testsuite/20_util/to_chars/constexpr.cc: Likewise.
+       * testsuite/20_util/to_chars/float128_c++23.cc: Likewise.
+       * testsuite/20_util/to_chars/float16_c++23.cc: Likewise.
+       * testsuite/20_util/to_chars/version.cc: Likewise.
+       * testsuite/20_util/to_underlying/1.cc: Likewise.
+       * testsuite/20_util/to_underlying/version.cc: Likewise.
+       * testsuite/20_util/tuple/p2321r2.cc: Likewise.
+       * testsuite/20_util/unique_ptr/assign/constexpr.cc: Likewise.
+       * testsuite/20_util/unique_ptr/comparison/constexpr.cc:
+       Likewise.
+       * testsuite/20_util/unique_ptr/cons/constexpr_c++20.cc:
+       Likewise.
+       * testsuite/20_util/unique_ptr/creation/constexpr.cc: Likewise.
+       * testsuite/20_util/unique_ptr/modifiers/constexpr.cc: Likewise.
+       * testsuite/20_util/unique_ptr/specialized_algorithms/constexpr.cc: Likewise.
+       * testsuite/20_util/unreachable/1.cc: Likewise.
+       * testsuite/20_util/unreachable/version.cc: Likewise.
+       * testsuite/20_util/uses_allocator/lwg3677.cc: Likewise.
+       * testsuite/21_strings/basic_string/capacity/char/resize_and_overwrite.cc: Likewise.
+       * testsuite/21_strings/basic_string/operations/contains/char.cc:
+       Likewise.
+       * testsuite/21_strings/basic_string/operations/contains/nonnull.cc: Likewise.
+       * testsuite/21_strings/basic_string/operations/contains/wchar_t.cc: Likewise.
+       * testsuite/21_strings/basic_string_view/cons/char/range_c++20.cc: Likewise.
+       * testsuite/21_strings/basic_string_view/cons/wchar_t/range_c++20.cc: Likewise.
+       * testsuite/21_strings/basic_string_view/operations/contains/char.cc: Likewise.
+       * testsuite/21_strings/basic_string_view/operations/contains/char/2.cc: Likewise.
+       * testsuite/21_strings/basic_string_view/operations/contains/nonnull.cc: Likewise.
+       * testsuite/21_strings/basic_string_view/operations/contains/wchar_t.cc: Likewise.
+       * testsuite/23_containers/queue/cons_from_iters.cc: Likewise.
+       * testsuite/23_containers/stack/cons_from_iters.cc: Likewise.
+       * testsuite/23_containers/vector/bool/element_access/1.cc:
+       Likewise.
+       * testsuite/24_iterators/const_iterator/1.cc: Likewise.
+       * testsuite/25_algorithms/contains/1.cc: Likewise.
+       * testsuite/25_algorithms/contains_subrange/1.cc: Likewise.
+       * testsuite/25_algorithms/find_last/1.cc: Likewise.
+       * testsuite/25_algorithms/find_last_if/1.cc: Likewise.
+       * testsuite/25_algorithms/find_last_if_not/1.cc: Likewise.
+       * testsuite/25_algorithms/fold_left/1.cc: Likewise.
+       * testsuite/25_algorithms/fold_right/1.cc: Likewise.
+       * testsuite/25_algorithms/iota/1.cc: Likewise.
+       * testsuite/26_numerics/bit/bit.byteswap/byteswap.cc: Likewise.
+       * testsuite/26_numerics/bit/bit.byteswap/version.cc: Likewise.
+       * testsuite/26_numerics/complex/ext_c++23.cc: Likewise.
+       * testsuite/26_numerics/headers/cmath/c99_classification_macros_c++23.cc: Likewise.
+       * testsuite/26_numerics/headers/cmath/constexpr_std_c++23.cc:
+       Likewise.
+       * testsuite/26_numerics/headers/cmath/functions_std_c++23.cc:
+       Likewise.
+       * testsuite/26_numerics/headers/cmath/nextafter_c++23.cc:
+       Likewise.
+       * testsuite/26_numerics/numbers/4.cc: Likewise.
+       * testsuite/27_io/basic_ostream/inserters_other/char/volatile_ptr.cc: Likewise.
+       * testsuite/27_io/filesystem/path/native/conv_c++23.cc:
+       Likewise.
+       * testsuite/27_io/spanstream/1.cc: Likewise.
+       * testsuite/27_io/spanstream/2.cc: Likewise.
+       * testsuite/27_io/spanstream/version.cc: Likewise.
+       * testsuite/29_atomics/atomic_float/requirements_cxx23.cc:
+       Likewise.
+       * testsuite/29_atomics/headers/stdatomic.h/c_compat.cc:
+       Likewise.
+       * testsuite/29_atomics/headers/stdatomic.h/version.cc: Likewise.
+       * testsuite/30_threads/packaged_task/cons/deduction_c++23.cc:
+       Likewise.
+       * testsuite/experimental/filesystem/path/native/conv_c++23.cc:
+       Likewise.
+       * testsuite/std/ranges/adaptors/adjacent/1.cc: Likewise.
+       * testsuite/std/ranges/adaptors/adjacent_transform/1.cc:
+       Likewise.
+       * testsuite/std/ranges/adaptors/as_const/1.cc: Likewise.
+       * testsuite/std/ranges/adaptors/as_rvalue/1.cc: Likewise.
+       * testsuite/std/ranges/adaptors/chunk/1.cc: Likewise.
+       * testsuite/std/ranges/adaptors/chunk_by/1.cc: Likewise.
+       * testsuite/std/ranges/adaptors/enumerate/1.cc: Likewise.
+       * testsuite/std/ranges/adaptors/join_with/1.cc: Likewise.
+       * testsuite/std/ranges/adaptors/lwg3715.cc: Likewise.
+       * testsuite/std/ranges/adaptors/slide/1.cc: Likewise.
+       * testsuite/std/ranges/adaptors/stride/1.cc: Likewise.
+       * testsuite/std/ranges/cartesian_product/1.cc: Likewise.
+       * testsuite/std/ranges/range_adaptor_closure.cc: Likewise.
+       * testsuite/std/ranges/repeat/1.cc: Likewise.
+       * testsuite/std/ranges/version_c++23.cc: Likewise.
+       * testsuite/std/ranges/zip/1.cc: Likewise.
+       * testsuite/std/ranges/zip_transform/1.cc: Likewise.
+
+2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
+
+       * testsuite/20_util/expected/assign.cc: Remove dg-options.
+       * testsuite/20_util/expected/bad.cc: Likewise.
+       * testsuite/20_util/expected/cons.cc: Likewise.
+       * testsuite/20_util/expected/equality.cc: Likewise.
+       * testsuite/20_util/expected/illformed_neg.cc: Likewise.
+       * testsuite/20_util/expected/lwg3877.cc: Likewise.
+       * testsuite/20_util/expected/lwg3938.cc: Likewise.
+       * testsuite/20_util/expected/monadic.cc: Likewise.
+       * testsuite/20_util/expected/observers.cc: Likewise.
+       * testsuite/20_util/expected/requirements.cc: Likewise.
+       * testsuite/20_util/expected/swap.cc: Likewise.
+       * testsuite/20_util/expected/synopsis.cc: Likewise.
+       * testsuite/20_util/expected/unexpected.cc: Likewise.
+       * testsuite/20_util/expected/version.cc: Likewise.
+
+2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
+
+       * testsuite/20_util/duration/arithmetic/overflow_c++20.cc:
+       Remove dg-options.
+       * testsuite/20_util/duration/io.cc: Likewise.
+       * testsuite/std/time/clock/file/io.cc: Likewise.
+       * testsuite/std/time/clock/file/members.cc: Likewise.
+       * testsuite/std/time/clock/file/overview.cc: Likewise.
+       * testsuite/std/time/clock/gps/1.cc: Likewise.
+       * testsuite/std/time/clock/gps/io.cc: Likewise.
+       * testsuite/std/time/clock/local/io.cc: Likewise.
+       * testsuite/std/time/clock/system/io.cc: Likewise.
+       * testsuite/std/time/clock/tai/1.cc: Likewise.
+       * testsuite/std/time/clock/tai/io.cc: Likewise.
+       * testsuite/std/time/clock/utc/1.cc: Likewise.
+       * testsuite/std/time/clock/utc/io.cc: Likewise.
+       * testsuite/std/time/clock/utc/leap_second_info.cc: Likewise.
+       * testsuite/std/time/day/1.cc: Likewise.
+       * testsuite/std/time/day/io.cc: Likewise.
+       * testsuite/std/time/exceptions.cc: Likewise.
+       * testsuite/std/time/format.cc: Likewise.
+       * testsuite/std/time/hh_mm_ss/1.cc: Likewise.
+       * testsuite/std/time/hh_mm_ss/109772.cc: Likewise.
+       * testsuite/std/time/hh_mm_ss/io.cc: Likewise.
+       * testsuite/std/time/is_am/1.cc: Likewise.
+       * testsuite/std/time/is_pm/1.cc: Likewise.
+       * testsuite/std/time/make12/1.cc: Likewise.
+       * testsuite/std/time/make24/1.cc: Likewise.
+       * testsuite/std/time/month/1.cc: Likewise.
+       * testsuite/std/time/month/io.cc: Likewise.
+       * testsuite/std/time/month_day/1.cc: Likewise.
+       * testsuite/std/time/month_day/io.cc: Likewise.
+       * testsuite/std/time/month_day_last/1.cc: Likewise.
+       * testsuite/std/time/month_day_last/io.cc: Likewise.
+       * testsuite/std/time/month_weekday/1.cc: Likewise.
+       * testsuite/std/time/month_weekday/io.cc: Likewise.
+       * testsuite/std/time/month_weekday_last/1.cc: Likewise.
+       * testsuite/std/time/month_weekday_last/io.cc: Likewise.
+       * testsuite/std/time/parse.cc: Likewise.
+       * testsuite/std/time/syn_c++20.cc: Likewise.
+       * testsuite/std/time/time_zone/get_info_local.cc: Likewise.
+       * testsuite/std/time/time_zone/get_info_sys.cc: Likewise.
+       * testsuite/std/time/time_zone/requirements.cc: Likewise.
+       * testsuite/std/time/traits/is_clock.cc: Likewise.
+       * testsuite/std/time/tzdb/1.cc: Likewise.
+       * testsuite/std/time/tzdb/leap_seconds.cc: Likewise.
+       * testsuite/std/time/tzdb_list/1.cc: Likewise.
+       * testsuite/std/time/tzdb_list/requirements.cc: Likewise.
+       * testsuite/std/time/weekday/1.cc: Likewise.
+       * testsuite/std/time/weekday/io.cc: Likewise.
+       * testsuite/std/time/weekday_indexed/io.cc: Likewise.
+       * testsuite/std/time/weekday_last/1.cc: Likewise.
+       * testsuite/std/time/weekday_last/io.cc: Likewise.
+       * testsuite/std/time/year/1.cc: Likewise.
+       * testsuite/std/time/year/2.cc: Likewise.
+       * testsuite/std/time/year/io.cc: Likewise.
+       * testsuite/std/time/weekday_indexed/1.cc: Likewise.
+       * testsuite/std/time/year_month/1.cc: Likewise.
+       * testsuite/std/time/year_month/2.cc: Likewise.
+       * testsuite/std/time/year_month/io.cc: Likewise.
+       * testsuite/std/time/year_month_day/1.cc: Likewise.
+       * testsuite/std/time/year_month_day/2.cc: Likewise.
+       * testsuite/std/time/year_month_day/3.cc: Likewise.
+       * testsuite/std/time/year_month_day/4.cc: Likewise.
+       * testsuite/std/time/year_month_day/io.cc: Likewise.
+       * testsuite/std/time/year_month_day_last/1.cc: Likewise.
+       * testsuite/std/time/year_month_day_last/2.cc: Likewise.
+       * testsuite/std/time/year_month_day_last/io.cc: Likewise.
+       * testsuite/std/time/year_month_weekday/1.cc: Likewise.
+       * testsuite/std/time/year_month_weekday/2.cc: Likewise.
+       * testsuite/std/time/year_month_weekday/3.cc: Likewise.
+       * testsuite/std/time/year_month_weekday/io.cc: Likewise.
+       * testsuite/std/time/year_month_weekday_last/1.cc: Likewise.
+       * testsuite/std/time/year_month_weekday_last/2.cc: Likewise.
+       * testsuite/std/time/year_month_weekday_last/io.cc: Likewise.
+       * testsuite/std/time/zoned_time/1.cc: Likewise.
+       * testsuite/std/time/zoned_time/custom.cc: Likewise.
+       * testsuite/std/time/zoned_time/deduction.cc: Likewise.
+       * testsuite/std/time/zoned_time/io.cc: Likewise.
+       * testsuite/std/time/zoned_time/req_neg.cc: Likewise.
+       * testsuite/std/time/zoned_time/requirements.cc: Likewise.
+       * testsuite/std/time/zoned_traits.cc: Likewise.
+
+2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
+
+       * testsuite/std/format/arguments/args.cc: Remove dg-options.
+       * testsuite/std/format/arguments/lwg3810.cc: Likewise.
+       * testsuite/std/format/error.cc: Likewise.
+       * testsuite/std/format/format_string.cc: Likewise.
+       * testsuite/std/format/formatter/concept.cc: Likewise.
+       * testsuite/std/format/formatter/ext_float.cc: Likewise.
+       * testsuite/std/format/formatter/requirements.cc: Likewise.
+       * testsuite/std/format/functions/107871.cc: Likewise.
+       * testsuite/std/format/functions/format.cc: Likewise.
+       * testsuite/std/format/functions/format_to.cc: Likewise.
+       * testsuite/std/format/functions/format_to_n.cc: Likewise.
+       * testsuite/std/format/functions/size.cc: Likewise.
+       * testsuite/std/format/functions/vformat_to.cc: Likewise.
+       * testsuite/std/format/parse_ctx.cc: Likewise.
+       * testsuite/std/format/string.cc: Likewise.
+       * testsuite/std/format/string_neg.cc: Likewise.
+       * testsuite/std/format/functions/format_c++23.cc: Removed.
+
+2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
+
+       * testsuite/20_util/function_objects/range.cmp/equal_to.cc:
+       Remove dg-options.
+       * testsuite/20_util/function_objects/range.cmp/greater.cc:
+       Likewise.
+       * testsuite/20_util/function_objects/range.cmp/greater_equal.cc:
+       Likewise.
+       * testsuite/20_util/function_objects/range.cmp/less.cc:
+       Likewise.
+       * testsuite/20_util/function_objects/range.cmp/less_equal.cc:
+       Likewise.
+       * testsuite/20_util/function_objects/range.cmp/lwg3530.cc:
+       Likewise.
+       * testsuite/20_util/function_objects/range.cmp/not_equal_to.cc:
+       Likewise.
+       * testsuite/20_util/specialized_algorithms/construct_at/1.cc:
+       Likewise.
+       * testsuite/20_util/specialized_algorithms/construct_at/92878_92947.cc:
+       Likewise.
+       * testsuite/20_util/specialized_algorithms/construct_at/95788.cc:
+       Likewise.
+       * testsuite/20_util/specialized_algorithms/destroy/constrained.cc:
+       Likewise.
+       * testsuite/20_util/specialized_algorithms/uninitialized_copy/constrained.cc:
+       Likewise.
+       * testsuite/20_util/specialized_algorithms/uninitialized_default_construct/constrained.cc:
+       Likewise.
+       * testsuite/20_util/specialized_algorithms/uninitialized_fill/94017.cc:
+       Likewise.
+       * testsuite/20_util/specialized_algorithms/uninitialized_fill/constrained.cc:
+       Likewise.
+       * testsuite/20_util/specialized_algorithms/uninitialized_fill_n/94017.cc:
+       Likewise.
+       * testsuite/20_util/specialized_algorithms/uninitialized_move/constrained.cc:
+       Likewise.
+       * testsuite/20_util/specialized_algorithms/uninitialized_value_construct/constrained.cc:
+       Likewise.
+       * testsuite/25_algorithms/adjacent_find/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/adjacent_find/constrained.cc:
+       Likewise.
+       * testsuite/25_algorithms/all_of/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/all_of/constrained.cc: Likewise.
+       * testsuite/25_algorithms/any_of/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/any_of/constrained.cc: Likewise.
+       * testsuite/25_algorithms/binary_search/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/binary_search/constrained.cc:
+       Likewise.
+       * testsuite/25_algorithms/clamp/constrained.cc: Likewise.
+       * testsuite/25_algorithms/constexpr_macro.cc: Likewise.
+       * testsuite/25_algorithms/copy/95578.cc: Likewise.
+       * testsuite/25_algorithms/copy/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/copy/constrained.cc: Likewise.
+       * testsuite/25_algorithms/copy/debug/constexpr_neg.cc: Likewise.
+       * testsuite/25_algorithms/copy_backward/95578.cc: Likewise.
+       * testsuite/25_algorithms/copy_backward/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/copy_backward/constrained.cc:
+       Likewise.
+       * testsuite/25_algorithms/copy_backward/debug/constexpr_neg.cc:
+       Likewise.
+       * testsuite/25_algorithms/copy_if/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/copy_if/constrained.cc: Likewise.
+       * testsuite/25_algorithms/copy_n/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/copy_n/constrained.cc: Likewise.
+       * testsuite/25_algorithms/count/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/count/constrained.cc: Likewise.
+       * testsuite/25_algorithms/count_if/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/count_if/constrained.cc: Likewise.
+       * testsuite/25_algorithms/cpp_lib_constexpr.cc: Likewise.
+       * testsuite/25_algorithms/equal/95578.cc: Likewise.
+       * testsuite/25_algorithms/equal/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/equal/constexpr_neg.cc: Likewise.
+       * testsuite/25_algorithms/equal/constrained.cc: Likewise.
+       * testsuite/25_algorithms/equal/debug/constexpr_neg.cc:
+       Likewise.
+       * testsuite/25_algorithms/equal_range/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/equal_range/constrained.cc: Likewise.
+       * testsuite/25_algorithms/fill/94017.cc: Likewise.
+       * testsuite/25_algorithms/fill/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/fill/constrained.cc: Likewise.
+       * testsuite/25_algorithms/fill_n/94017.cc: Likewise.
+       * testsuite/25_algorithms/fill_n/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/fill_n/constrained.cc: Likewise.
+       * testsuite/25_algorithms/find/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/find/constrained.cc: Likewise.
+       * testsuite/25_algorithms/find_end/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/find_end/constrained.cc: Likewise.
+       * testsuite/25_algorithms/find_first_of/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/find_first_of/constrained.cc:
+       Likewise.
+       * testsuite/25_algorithms/find_if/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/find_if/constrained.cc: Likewise.
+       * testsuite/25_algorithms/find_if_not/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/find_if_not/constrained.cc: Likewise.
+       * testsuite/25_algorithms/for_each/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/for_each/constrained.cc: Likewise.
+       * testsuite/25_algorithms/generate/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/generate/constrained.cc: Likewise.
+       * testsuite/25_algorithms/generate_n/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/generate_n/constrained.cc: Likewise.
+       * testsuite/25_algorithms/heap/constrained.cc: Likewise.
+       * testsuite/25_algorithms/includes/constrained.cc: Likewise.
+       * testsuite/25_algorithms/inplace_merge/constrained.cc:
+       Likewise.
+       * testsuite/25_algorithms/is_heap/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/is_heap_until/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/is_partitioned/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/is_partitioned/constrained.cc:
+       Likewise.
+       * testsuite/25_algorithms/is_permutation/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/is_permutation/constrained.cc:
+       Likewise.
+       * testsuite/25_algorithms/is_sorted/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/is_sorted/constrained.cc: Likewise.
+       * testsuite/25_algorithms/is_sorted_until/constexpr.cc:
+       Likewise.
+       * testsuite/25_algorithms/is_sorted_until/constrained.cc:
+       Likewise.
+       * testsuite/25_algorithms/iter_swap/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/lexicographical_compare/93972.cc:
+       Likewise.
+       * testsuite/25_algorithms/lexicographical_compare/95578.cc:
+       Likewise.
+       * testsuite/25_algorithms/lexicographical_compare/constexpr.cc:
+       Likewise.
+       * testsuite/25_algorithms/lexicographical_compare/constrained.cc:
+       Likewise.
+       * testsuite/25_algorithms/lexicographical_compare_three_way/1.cc:
+       Likewise.
+       * testsuite/25_algorithms/lexicographical_compare_three_way/constexpr.cc:
+       Likewise.
+       * testsuite/25_algorithms/lower_bound/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/lower_bound/constrained.cc: Likewise.
+       * testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_neg.cc:
+       Likewise.
+       * testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_pred_neg.cc:
+       Likewise.
+       * testsuite/25_algorithms/lower_bound/debug/constexpr_valid_range_neg.cc:
+       Likewise.
+       * testsuite/25_algorithms/make_heap/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/max/constrained.cc: Likewise.
+       * testsuite/25_algorithms/max_element/constrained.cc: Likewise.
+       * testsuite/25_algorithms/merge/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/merge/constrained.cc: Likewise.
+       * testsuite/25_algorithms/min/constrained.cc: Likewise.
+       * testsuite/25_algorithms/min_element/constrained.cc: Likewise.
+       * testsuite/25_algorithms/minmax/constrained.cc: Likewise.
+       * testsuite/25_algorithms/minmax_element/constrained.cc:
+       Likewise.
+       * testsuite/25_algorithms/mismatch/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/mismatch/constrained.cc: Likewise.
+       * testsuite/25_algorithms/move/93872.cc: Likewise.
+       * testsuite/25_algorithms/move/95578.cc: Likewise.
+       * testsuite/25_algorithms/move/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/move/constrained.cc: Likewise.
+       * testsuite/25_algorithms/move_backward/93872.cc: Likewise.
+       * testsuite/25_algorithms/move_backward/95578.cc: Likewise.
+       * testsuite/25_algorithms/move_backward/constrained.cc:
+       Likewise.
+       * testsuite/25_algorithms/next_permutation/constexpr.cc:
+       Likewise.
+       * testsuite/25_algorithms/next_permutation/constrained.cc:
+       Likewise.
+       * testsuite/25_algorithms/none_of/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/none_of/constrained.cc: Likewise.
+       * testsuite/25_algorithms/nth_element/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/nth_element/constrained.cc: Likewise.
+       * testsuite/25_algorithms/partial_sort/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/partial_sort/constrained.cc: Likewise.
+       * testsuite/25_algorithms/partial_sort_copy/constexpr.cc:
+       Likewise.
+       * testsuite/25_algorithms/partial_sort_copy/constrained.cc:
+       Likewise.
+       * testsuite/25_algorithms/partition/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/partition/constrained.cc: Likewise.
+       * testsuite/25_algorithms/partition_copy/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/partition_copy/constrained.cc:
+       Likewise.
+       * testsuite/25_algorithms/partition_point/constexpr.cc:
+       Likewise.
+       * testsuite/25_algorithms/partition_point/constrained.cc:
+       Likewise.
+       * testsuite/25_algorithms/pop_heap/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/prev_permutation/constexpr.cc:
+       Likewise.
+       * testsuite/25_algorithms/prev_permutation/constrained.cc:
+       Likewise.
+       * testsuite/25_algorithms/push_heap/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/remove/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/remove/constrained.cc: Likewise.
+       * testsuite/25_algorithms/remove_copy/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/remove_copy/constrained.cc: Likewise.
+       * testsuite/25_algorithms/remove_copy_if/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/remove_copy_if/constrained.cc:
+       Likewise.
+       * testsuite/25_algorithms/remove_if/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/remove_if/constrained.cc: Likewise.
+       * testsuite/25_algorithms/replace/constrained.cc: Likewise.
+       * testsuite/25_algorithms/replace_copy/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/replace_copy/constrained.cc: Likewise.
+       * testsuite/25_algorithms/replace_copy_if/constexpr.cc:
+       Likewise.
+       * testsuite/25_algorithms/replace_copy_if/constrained.cc:
+       Likewise.
+       * testsuite/25_algorithms/replace_if/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/replace_if/constrained.cc: Likewise.
+       * testsuite/25_algorithms/reverse/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/reverse/constrained.cc: Likewise.
+       * testsuite/25_algorithms/reverse_copy/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/reverse_copy/constrained.cc: Likewise.
+       * testsuite/25_algorithms/rotate/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/rotate/constrained.cc: Likewise.
+       * testsuite/25_algorithms/rotate_copy/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/rotate_copy/constrained.cc: Likewise.
+       * testsuite/25_algorithms/sample/constrained.cc: Likewise.
+       * testsuite/25_algorithms/search/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/search/constrained.cc: Likewise.
+       * testsuite/25_algorithms/search_n/97828.cc: Likewise.
+       * testsuite/25_algorithms/search_n/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/search_n/constrained.cc: Likewise.
+       * testsuite/25_algorithms/set_difference/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/set_difference/constrained.cc:
+       Likewise.
+       * testsuite/25_algorithms/set_intersection/constexpr.cc:
+       Likewise.
+       * testsuite/25_algorithms/set_intersection/constrained.cc:
+       Likewise.
+       * testsuite/25_algorithms/set_symmetric_difference/constexpr.cc:
+       Likewise.
+       * testsuite/25_algorithms/set_symmetric_difference/constrained.cc:
+       Likewise.
+       * testsuite/25_algorithms/set_union/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/set_union/constrained.cc: Likewise.
+       * testsuite/25_algorithms/shift_left/1.cc: Likewise.
+       * testsuite/25_algorithms/shift_right/1.cc: Likewise.
+       * testsuite/25_algorithms/shuffle/constrained.cc: Likewise.
+       * testsuite/25_algorithms/sort/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/sort/constrained.cc: Likewise.
+       * testsuite/25_algorithms/sort_heap/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/stable_partition/constrained.cc:
+       Likewise.
+       * testsuite/25_algorithms/stable_sort/constrained.cc: Likewise.
+       * testsuite/25_algorithms/swap/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/swap_ranges/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/swap_ranges/constrained.cc: Likewise.
+       * testsuite/25_algorithms/transform/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/transform/constrained.cc: Likewise.
+       * testsuite/25_algorithms/unique/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/unique/constrained.cc: Likewise.
+       * testsuite/25_algorithms/unique_copy/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/unique_copy/constrained.cc: Likewise.
+       * testsuite/25_algorithms/upper_bound/constexpr.cc: Likewise.
+       * testsuite/25_algorithms/upper_bound/constrained.cc: Likewise.
+       * testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_neg.cc:
+       Likewise.
+       * testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_pred_neg.cc:
+       Likewise.
+       * testsuite/25_algorithms/upper_bound/debug/constexpr_valid_range_neg.cc:
+       Likewise.
+
+2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
+
+       * testsuite/std/concepts/1.cc: Remove dg-options.
+       * testsuite/std/concepts/2.cc: Likewise.
+       * testsuite/std/concepts/concepts.callable/invocable.cc:
+       Likewise.
+       * testsuite/std/concepts/concepts.callable/regular_invocable.cc:
+       Likewise.
+       * testsuite/std/concepts/concepts.callable/relation.cc:
+       Likewise.
+       * testsuite/std/concepts/concepts.callable/strictweakorder.cc:
+       Likewise.
+       * testsuite/std/concepts/concepts.lang/concept.arithmetic/floating_point.cc: Likewise.
+       * testsuite/std/concepts/concepts.lang/concept.arithmetic/integral.cc: Likewise.
+       * testsuite/std/concepts/concepts.lang/concept.arithmetic/signed_integral.cc: Likewise.
+       * testsuite/std/concepts/concepts.lang/concept.arithmetic/unsigned_integral.cc: Likewise.
+       * testsuite/std/concepts/concepts.lang/concept.assignable/1.cc:
+       Likewise.
+       * testsuite/std/concepts/concepts.lang/concept.common/1.cc:
+       Likewise.
+       * testsuite/std/concepts/concepts.lang/concept.commonref/1.cc:
+       Likewise.
+       * testsuite/std/concepts/concepts.lang/concept.constructible/1.cc: Likewise.
+       * testsuite/std/concepts/concepts.lang/concept.convertible/1.cc:
+       Likewise.
+       * testsuite/std/concepts/concepts.lang/concept.copyconstructible/1.cc: Likewise.
+       * testsuite/std/concepts/concepts.lang/concept.defaultinitializable/1.cc: Likewise.
+       * testsuite/std/concepts/concepts.lang/concept.defaultinitializable/lwg3149.cc: Likewise.
+       * testsuite/std/concepts/concepts.lang/concept.derived/1.cc:
+       Likewise.
+       * testsuite/std/concepts/concepts.lang/concept.destructible/1.cc: Likewise.
+       * testsuite/std/concepts/concepts.lang/concept.moveconstructible/1.cc: Likewise.
+       * testsuite/std/concepts/concepts.lang/concept.same/1.cc:
+       Likewise.
+       * testsuite/std/concepts/concepts.lang/concept.swappable/swap.cc: Likewise.
+       * testsuite/std/concepts/concepts.lang/concept.swappable/swappable.cc: Likewise.
+       * testsuite/std/concepts/concepts.lang/concept.swappable/swappable_with.cc: Likewise.
+       * testsuite/std/concepts/concepts.object/copyable.cc: Likewise.
+       * testsuite/std/concepts/concepts.object/movable.cc: Likewise.
+       * testsuite/std/concepts/concepts.object/regular.cc: Likewise.
+       * testsuite/std/concepts/concepts.object/semiregular.cc:
+       Likewise.
+       * testsuite/std/ranges/97600.cc: Likewise.
+       * testsuite/std/ranges/access/101782.cc: Likewise.
+       * testsuite/std/ranges/access/begin.cc: Likewise.
+       * testsuite/std/ranges/access/begin_neg.cc: Likewise.
+       * testsuite/std/ranges/access/cbegin.cc: Likewise.
+       * testsuite/std/ranges/access/cdata.cc: Likewise.
+       * testsuite/std/ranges/access/cend.cc: Likewise.
+       * testsuite/std/ranges/access/crbegin.cc: Likewise.
+       * testsuite/std/ranges/access/crend.cc: Likewise.
+       * testsuite/std/ranges/access/data.cc: Likewise.
+       * testsuite/std/ranges/access/empty.cc: Likewise.
+       * testsuite/std/ranges/access/end.cc: Likewise.
+       * testsuite/std/ranges/access/end_neg.cc: Likewise.
+       * testsuite/std/ranges/access/lwg3467.cc: Likewise.
+       * testsuite/std/ranges/access/p2602.cc: Likewise.
+       * testsuite/std/ranges/access/rbegin.cc: Likewise.
+       * testsuite/std/ranges/access/rend.cc: Likewise.
+       * testsuite/std/ranges/access/size.cc: Likewise.
+       * testsuite/std/ranges/access/size_neg.cc: Likewise.
+       * testsuite/std/ranges/access/ssize.cc: Likewise.
+       * testsuite/std/ranges/adaptors/100479.cc: Likewise.
+       * testsuite/std/ranges/adaptors/100577.cc: Likewise.
+       * testsuite/std/ranges/adaptors/93978.cc: Likewise.
+       * testsuite/std/ranges/adaptors/95322.cc: Likewise.
+       * testsuite/std/ranges/adaptors/99433.cc: Likewise.
+       * testsuite/std/ranges/adaptors/all.cc: Likewise.
+       * testsuite/std/ranges/adaptors/common.cc: Likewise.
+       * testsuite/std/ranges/adaptors/conditionally_borrowed.cc:
+       Likewise.
+       * testsuite/std/ranges/adaptors/counted.cc: Likewise.
+       * testsuite/std/ranges/adaptors/detail/copyable_box.cc:
+       Likewise.
+       * testsuite/std/ranges/adaptors/drop.cc: Likewise.
+       * testsuite/std/ranges/adaptors/drop_while.cc: Likewise.
+       * testsuite/std/ranges/adaptors/elements.cc: Likewise.
+       * testsuite/std/ranges/adaptors/filter.cc: Likewise.
+       * testsuite/std/ranges/adaptors/join.cc: Likewise.
+       * testsuite/std/ranges/adaptors/lazy_split.cc: Likewise.
+       * testsuite/std/ranges/adaptors/lazy_split_neg.cc: Likewise.
+       * testsuite/std/ranges/adaptors/lwg3286.cc: Likewise.
+       * testsuite/std/ranges/adaptors/lwg3313_neg.cc: Likewise.
+       * testsuite/std/ranges/adaptors/lwg3325_neg.cc: Likewise.
+       * testsuite/std/ranges/adaptors/lwg3406.cc: Likewise.
+       * testsuite/std/ranges/adaptors/p1739.cc: Likewise.
+       * testsuite/std/ranges/adaptors/p2281.cc: Likewise.
+       * testsuite/std/ranges/adaptors/p2770r0.cc: Likewise.
+       * testsuite/std/ranges/adaptors/reverse.cc: Likewise.
+       * testsuite/std/ranges/adaptors/sizeof.cc: Likewise.
+       * testsuite/std/ranges/adaptors/split.cc: Likewise.
+       * testsuite/std/ranges/adaptors/take.cc: Likewise.
+       * testsuite/std/ranges/adaptors/take_while.cc: Likewise.
+       * testsuite/std/ranges/adaptors/transform.cc: Likewise.
+       * testsuite/std/ranges/empty_view.cc: Likewise.
+       * testsuite/std/ranges/headers/ranges/synopsis.cc: Likewise.
+       * testsuite/std/ranges/iota/difference_type.cc: Likewise.
+       * testsuite/std/ranges/iota/iota_view.cc: Likewise.
+       * testsuite/std/ranges/iota/iterator.cc: Likewise.
+       * testsuite/std/ranges/iota/lwg3292_neg.cc: Likewise.
+       * testsuite/std/ranges/iota/max_size_type.cc: Likewise.
+       * testsuite/std/ranges/istream_view.cc: Likewise.
+       * testsuite/std/ranges/p2259.cc: Likewise.
+       * testsuite/std/ranges/p2325.cc: Likewise.
+       * testsuite/std/ranges/p2367.cc: Likewise.
+       * testsuite/std/ranges/range.cc: Likewise.
+       * testsuite/std/ranges/refinements.cc: Likewise.
+       * testsuite/std/ranges/safe_range.cc: Likewise.
+       * testsuite/std/ranges/safe_range_types.cc: Likewise.
+       * testsuite/std/ranges/single_view.cc: Likewise.
+       * testsuite/std/ranges/sized.cc: Likewise.
+       * testsuite/std/ranges/subrange/1.cc: Likewise.
+       * testsuite/std/ranges/subrange/97512.cc: Likewise.
+       * testsuite/std/ranges/subrange/constexpr.cc: Likewise.
+       * testsuite/std/ranges/subrange/lwg3282_neg.cc: Likewise.
+       * testsuite/std/ranges/subrange/lwg3286.cc: Likewise.
+       * testsuite/std/ranges/subrange/lwg3433.cc: Likewise.
+       * testsuite/std/ranges/subrange/sizeof.cc: Likewise.
+       * testsuite/std/ranges/subrange/tuple_like.cc: Likewise.
+       * testsuite/std/ranges/view.cc: Likewise.
+
+2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
+
+       * testsuite/21_strings/headers/cuchar/functions_std_cxx20.cc:
+       Remove dg-options.
+       * testsuite/23_containers/span/contiguous_range_neg.cc:
+       Likewise.
+       * testsuite/23_containers/span/everything.cc: Likewise.
+
+2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
+
+       * testsuite/24_iterators/reverse_iterator/100639.cc: Remove
+       dg-options and add dg-add-options strict_std.
+       * testsuite/std/ranges/iota/93267.cc: Likewise.
+       * testsuite/std/ranges/iota/96042.cc: Likewise.
+       * testsuite/std/ranges/iota/size.cc: Likewise.
+       * testsuite/std/ranges/subrange/96042.cc: Likewise.
+
+2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
+
+       * testsuite/tr1/5_numerical_facilities/special_functions/07_conf_hyperg/compile_cxx17.cc:
+       Replace dg-options -std=c++17 with dg-add-options strict_std.
+       * testsuite/tr1/5_numerical_facilities/special_functions/17_hyperg/compile_cxx17.cc:
+       Likewise.
+
+2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
+
+       * testsuite/23_containers/deque/48101-2_neg.cc: Replace
+       dg-options with target selector.
+       * testsuite/23_containers/forward_list/48101-2_neg.cc: Likewise.
+       * testsuite/23_containers/list/48101-2_neg.cc: Likewise.
+       * testsuite/23_containers/map/48101-2_neg.cc: Likewise.
+       * testsuite/23_containers/map/48101_neg.cc: Likewise.
+       * testsuite/23_containers/multimap/48101-2_neg.cc: Likewise.
+       * testsuite/23_containers/multimap/48101_neg.cc: Likewise.
+       * testsuite/23_containers/multiset/48101-2_neg.cc: Likewise.
+       * testsuite/23_containers/set/48101-2_neg.cc: Likewise.
+       * testsuite/23_containers/unordered_map/48101-2_neg.cc:
+       Likewise.
+       * testsuite/23_containers/unordered_multimap/48101-2_neg.cc:
+       Likewise.
+       * testsuite/23_containers/unordered_multiset/48101-2_neg.cc:
+       Likewise.
+       * testsuite/23_containers/unordered_set/48101-2_neg.cc:
+       Likewise.
+       * testsuite/23_containers/vector/48101-2_neg.cc: Likewise.
+
+2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
+
+       * doc/xml/manual/test.xml: Update documentation on running and
+       writing tests.
+       * doc/html/manual/test.html: Regenerate.
+       * testsuite/Makefile.am: Add v3-use-std-list to site.tmp
+       * testsuite/Makefile.in: Regenerate.
+       * testsuite/lib/dg-options.exp (add_options_for_strict_std): New
+       proc.
+       * testsuite/lib/libstdc++.exp (search_for): New utility proc.
+       (v3-dg-runtest): New proc to replace dg-runtest.
+       * testsuite/libstdc++-dg/conformance.exp: Use v3-dg-runtest.
+
+2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
+
+       * testsuite/29_atomics/headers/atomic/types_std_c++2a_neg.cc:
+       Fix test to work for C++23 and C++26 too.
+
+2023-09-15  Patrick Palka  <ppalka@redhat.com>
+
+       * include/std/bit: Include <concepts>.
+       (byteswap): Use a type-constraint instead of enable_if_t
+       inside the return type, and use std::integral.
+       (_If_is_unsigned_integer): Replace with ...
+       (__unsigned_integer): ... this.
+       (rotl): Use a type-constraint instead of enable_if_t inside
+       the return type.
+       (countl_zero): Likewise.
+       (countl_one): Likewise.
+       (countr_zero): Likewise.
+       (countr_one): Likewise.
+       (popcount): Likewise.
+       (has_single_bit): Likewise.
+       (bit_ceil): Likewise.
+       (bit_floor): Likewise.
+       (bit_width): Likewise.
+
+2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
+
+       * include/std/variant (variant): Remove derivation from
+       _Enable_default_constructor base class.
+       (variant::variant()): Constrain.
+       * testsuite/20_util/variant/default_ctor.cc: New test.
+
+2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
+
+       PR libstdc++/111172
+       * include/std/variant (get<T>): Remove !is_void static
+       assertions.
+
+2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
+
+       * include/bits/version.def (to_chars): Define new value for
+       C++26.
+       * include/bits/version.h: Regenerate.
+       * include/std/charconv (to_chars_result::operator bool): New
+       function.
+       (from_chars_result::operator bool): New function.
+       * testsuite/20_util/to_chars/version.cc: Update expected value.
+       * testsuite/20_util/from_chars/result.cc: New test.
+       * testsuite/20_util/to_chars/result.cc: New test.
+
+2023-09-14  Jonathan Wakely  <jwakely@redhat.com>
+
+       PR c++/111357
+       * testsuite/20_util/integer_sequence/pr111357.cc: New test.
+
+2023-09-14  Jonathan Wakely  <jwakely@redhat.com>
+
+       * testsuite/27_io/basic_filebuf/seekoff/char/1-io.cc: Use
+       dg-additional-files. Remove @require@ and @diff@ comments.
+       * testsuite/27_io/basic_filebuf/seekoff/char/2-io.cc: Likewise.
+       * testsuite/27_io/basic_filebuf/seekpos/char/1-io.cc: Likewise.
+       * testsuite/27_io/basic_filebuf/seekpos/char/2-io.cc: Likewise.
+       * testsuite/lib/dg-options.exp (v3_additional_files): New
+       global variable.
+       (dg-additional-files): New proc.
+       * testsuite/lib/libstdc++.exp (v3_target_compile): Copy
+       additional files to test directory.
+
+2023-09-14  Jonathan Wakely  <jwakely@redhat.com>
+
+       * include/experimental/io_context (io_context) [!_GLIBCXX_HAS_GTHREADS]:
+       Use a plain integer for _M_work_count for single-threaded
+       targets.
+       * include/experimental/memory_resource (__get_default_resource)
+       [!_GLIBCXX_HAS_GTHREADS]: Use unsynchronized type for
+       single-threaded targets.
+       * src/c++17/default_resource.h: Adjust preprocessor conditions
+       to match memory_resource.cc.
+       * src/c++17/memory_resource.cc [!_GLIBCXX_HAS_GTHREADS]
+       (atomic_mem_res): Use unsynchronized type for single-threaded
+       targets.
+
+2023-09-14  Christophe Lyon  <christophe.lyon@linaro.org>
+
+       * testsuite/29_atomics/atomic/compare_exchange_padding.cc: Likewise.
+       * testsuite/29_atomics/atomic/cons/value_init.cc: Likewise.
+       * testsuite/29_atomics/atomic_float/value_init.cc: Likewise.
+       * testsuite/29_atomics/atomic_integral/cons/value_init.cc: Likewise.
+       * testsuite/29_atomics/atomic_ref/compare_exchange_padding.cc: Likewise.
+       * testsuite/29_atomics/atomic_ref/generic.cc: Likewise.
+       * testsuite/29_atomics/atomic_ref/integral.cc: Likewise.
+       * testsuite/29_atomics/atomic_ref/pointer.cc: Likewise.
+
+2023-09-14  François Dumont  <fdumont@gcc.gnu.org>
+
+       * testsuite/19_diagnostics/stacktrace/synopsis.cc: Add
+       { dg-require-normal-namespace "" }.
+
+2023-09-13  François Dumont  <fdumont@gcc.gnu.org>
+
+       * include/std/format (std::__format::_Arg_store): Explicit version
+       namespace on make_format_args friend declaration.
+
 2023-09-12  Patrick Palka  <ppalka@redhat.com>
 
        PR libstdc++/111327