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Diffstat (limited to 'libstdc++-v3/ChangeLog')
| -rw-r--r-- | libstdc++-v3/ChangeLog | 3507 |
1 files changed, 3507 insertions, 0 deletions
diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog index 4615d0f..72a8610 100644 --- a/libstdc++-v3/ChangeLog +++ b/libstdc++-v3/ChangeLog @@ -1,3 +1,3510 @@ +2025-08-07 Gerald Pfeifer <gerald@pfeifer.com> + + * doc/xml/manual/build_hacking.xml: Switch gcc.gnu.org installation + docs to https. + * doc/html/manual/appendix_porting.html: Regenerate. + +2025-08-05 Jakub Jelinek <jakub@redhat.com> + + PR libstdc++/121373 + * src/c++23/std.cc.in (std::ranges::iter_move, std::ranges::iter_swap): + Remove exports. + +2025-08-04 Jakub Jelinek <jakub@redhat.com> + hexne <printfne@gmail.com> + + PR libstdc++/121373 + * src/c++23/std.cc.in (std::ranges::shift_left, + std::ranges::shift_right): Only export for C++23 and later. + (std::ranges::fold_left_first_with_iter_result, + std::ranges::fold_left_with_iter_result): Export. + (std::byteswap): Export for C++23 and later. + (std::ranges::iter_move, std::ranges::iter_swap): Export. + (std::projected_value_t): Export for C++26 and later. + (std::out_ptr_t, std::inout_ptr_t): Export. + (std::ranges::iota_result): Export. + (std::regex_constants): Export a lot of constants. + (std::is_scoped_enum, std::is_scoped_enum_v): Export. + +2025-08-04 Tomasz Kamiński <tkaminsk@redhat.com> + + PR libstdc++/121128 + * include/bits/indirect.h (indirect::operator*): + Cast __self to approparietly qualified indirect. + * testsuite/std/memory/indirect/access.cc: New test. + * testsuite/std/memory/polymorphic/access.cc: New test. + +2025-08-03 Jakub Jelinek <jakub@redhat.com> + + * src/c++23/std.cc.in (std::owner_equal, std::owner_hash): Export. + +2025-07-30 François Dumont <frs.dumont@gmail.com> + + * testsuite/std/time/format/data_not_present_neg.cc: Remove _GLIBCXX_USE_DUAL_ABI + check. + +2025-07-29 Tomasz Kamiński <tkaminsk@redhat.com> + + * testsuite/std/format/ranges/format_kind.cc: New test. + +2025-07-28 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/102181 + * include/bits/stl_iterator_base_funcs.h (distance, advance): + Check C++20 iterator concepts and handle appropriately. + (__detail::__iter_category_converts_to_concept): New concept. + (__detail::__promotable_iterator): New concept. + * testsuite/24_iterators/operations/cxx20_iterators.cc: New + test. + +2025-07-28 Nathan Myers <ncm@cantrip.org> + + PR libstdc++/119742 + * include/debug/bitset: Add new ctor. + +2025-07-28 Luc Grosheintz <luc.grosheintz@gmail.com> + + * include/std/mdspan: Small stylistic adjustments. + +2025-07-28 Luc Grosheintz <luc.grosheintz@gmail.com> + + * testsuite/23_containers/mdspan/accessors/generic.cc: Refactor + test_ctor. + +2025-07-28 Tomasz Kamiński <tkaminsk@redhat.com> + + PR libstdc++/121196 + * include/std/inplace_vector (std::erase): Provide default argument + for _Up parameter. + * testsuite/23_containers/inplace_vector/erasure.cc: Add test for + using braces-init-list as arguments to erase_if and use function + to verify content of inplace_vector + +2025-07-25 Tuur Martens <tuurmartens4@gmail.com> + + * include/bits/unordered_map.h: Rectify referencing of + non-existent type. + +2025-07-24 Nathaniel Shead <nathanieloshead@gmail.com> + + PR c++/117294 + PR c++/113854 + * testsuite/20_util/any/misc/any_cast_neg.cc: Adjust + diagnostics. + * testsuite/20_util/expected/illformed_neg.cc: Likewise. + * testsuite/20_util/optional/monadic/or_else_neg.cc: Likewise. + * testsuite/23_containers/array/creation/3_neg.cc: Likewise. + * testsuite/24_iterators/range_generators/lwg3900.cc: Likewise. + * testsuite/29_atomics/atomic/requirements/types_neg.cc: + Likewise. + * testsuite/30_threads/stop_token/stop_callback/invocable_neg.cc: + Likewise. + * testsuite/30_threads/stop_token/stop_callback/destructible_neg.cc: + Likewise. + * testsuite/std/format/arguments/args_neg.cc: Likewise. + * testsuite/std/format/string_neg.cc: Likewise. + +2025-07-24 Tomasz Kamiński <tkaminsk@redhat.com> + + PR libstdc++/104874 + * testsuite/24_iterators/random_access/string_vector_iterators.cc: + Reworked. + +2025-07-24 Tomasz Kamiński <tkaminsk@redhat.com> + + * testsuite/21_strings/basic_string/cons/from_range.cc: Replace + test_constexpr with test_ranges inside static_assert. + * testsuite/21_strings/basic_string/modifiers/append/append_range.cc: + Likewise. + * testsuite/21_strings/basic_string/modifiers/assign/assign_range.cc: + Likewise. + * testsuite/21_strings/basic_string/modifiers/insert/insert_range.cc: + Likewise. + * testsuite/21_strings/basic_string/modifiers/replace/replace_with_range.cc: + Likewise. + * testsuite/23_containers/vector/bool/cons/from_range.cc: Likewise. + * testsuite/23_containers/vector/bool/modifiers/assign/assign_range.cc: + Likewise. + * testsuite/23_containers/vector/bool/modifiers/insert/insert_range.cc: + Likewise. + * testsuite/23_containers/vector/cons/from_range.cc: Likewise. + * testsuite/23_containers/vector/modifiers/assign/assign_range.cc: + Likewise. + * testsuite/23_containers/vector/modifiers/insert/insert_range.cc: + Likewise. + * testsuite/23_containers/vector/bool/modifiers/insert/append_range.cc: + Run full test_ranges instead of span-only in test_constexpr. + * testsuite/23_containers/vector/modifiers/append_range.cc: + Replace test_constexpr with calls to test_ranges and test_overlapping. + * testsuite/util/testsuite_allocator.h (__gnu_test::SimpleAllocator): + Declared member functions as constexpr. + +2025-07-23 Luc Grosheintz <luc.grosheintz@gmail.com> + + * testsuite/23_containers/mdspan/accessors/default.cc: Delete. + * testsuite/23_containers/mdspan/accessors/generic.cc: Slightly + generalize the test code previously in default.cc. + +2025-07-23 Luc Grosheintz <luc.grosheintz@gmail.com> + + * testsuite/23_containers/mdspan/extents/ctor_ints.cc: Remove + superfluous parens. + * testsuite/23_containers/mdspan/extents/ctor_shape.cc: Ditto. + * testsuite/23_containers/mdspan/mdspan.cc: Ditto. + +2025-07-23 Tomasz Kamiński <tkaminsk@redhat.com> + + PR libstdc++/119137 + * testsuite/23_containers/inplace_vector/access/elem.cc: Cover + front and back methods and const calls. + * testsuite/23_containers/inplace_vector/access/elem_neg.cc: + Likewise. + * testsuite/23_containers/inplace_vector/modifiers/erase_neg.cc: + New test. + * testsuite/23_containers/inplace_vector/modifiers/single_insert_neg.cc: + New test. + +2025-07-22 Tomasz Kamiński <tkaminsk@redhat.com> + + PR libstdc++/119137 + * testsuite/23_containers/inplace_vector/cons/from_range.cc: Run + iterators and range test at compile-time. + * testsuite/23_containers/inplace_vector/modifiers/assign.cc: + Likewise. + * testsuite/23_containers/inplace_vector/modifiers/multi_insert.cc: + Likewise. + * testsuite/util/testsuite_iterators.h (__gnu_test::BoundsContainer) + (__gnu_test::OutputContainer, __gnu_test::WritableObject) + (__gnu_test::output_iterator_wrapper, __gnu_test::input_iterator_wrapper) + (__gnu_test::forward_iterator_wrapper) + (__gnu_test::bidirectional_iterator_wrapper) + (__gnu_test::random_access_iterator_wrapper) + (__gnu_test::test_container): Add appropriate _GLIBCXXNN_CONSTEXPR + macros to member functions. + (__gnu_test::contiguous_iterator_wrapper) + (__gnu_test::input_iterator_wrapper_rval) + (__gnu_test::test_range, __gnu_test::test_range_nocopy) + (__gnu_test::test_sized_range_sized_sent) + (__gnu_test::test_sized_range): Add constexpr specifier to member + functions. + +2025-07-22 Tomasz Kamiński <tkaminsk@redhat.com> + + PR libstdc++/119137 + * include/std/inplace_vector (inplace_vector::assign_range): + Replace _Nm with _M_size in the assigment loop. + +2025-07-21 Luc Grosheintz <luc.grosheintz@gmail.com> + + * include/std/mdspan (mdspan::mdspan): Make default ctor + conditionally noexcept. + * testsuite/23_containers/mdspan/mdspan.cc: Add tests. + +2025-07-21 Luc Grosheintz <luc.grosheintz@gmail.com> + + * include/std/mdspan (mdspan::is_always_unique): Make + conditionally noexcept. + (mdspan::is_always_exhaustive): Ditto. + (mdspan::is_always_strided): Ditto. + (mdspan::is_unique): Ditto. + (mdspan::is_exhaustive): Ditto. + (mdspan::is_strided): Ditto. + * testsuite/23_containers/mdspan/layout_like.h: Make noexcept + configurable. Add ThrowingLayout. + * testsuite/23_containers/mdspan/mdspan.cc: Add tests for + noexcept. + +2025-07-20 Jakub Jelinek <jakub@redhat.com> + + PR libstdc++/121174 + * src/c++23/std.cc.in (std::dextents): Export. Add to FIXME comments + other not yet implemented nor exported <mdspan> entities. + +2025-07-18 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/stl_iterator_base_types.h (__any_input_iterator): + Only define when __cpp_lib_concepts is defined. + +2025-07-18 Jonathan Wakely <jwakely@redhat.com> + + * doc/xml/manual/appendix_contributing.xml: Remove Paolo from + list of maintainers to contact about contributing. + * doc/html/manual/appendix_contributing.html: Regenerate. + +2025-07-18 Jonathan Wakely <jwakely@redhat.com> + + * doc/xml/manual/build_hacking.xml: Document that + windows_zones-map.h is a generated file. + * doc/html/manual/appendix_porting.html: Regenerate. + +2025-07-18 Tomasz Kamiński <tkaminsk@redhat.com> + + PR libstdc++/119137 + * include/std/inplace_vector (inplace_vector::operator=): + Qualify call to std::addressof. + +2025-07-18 Tomasz Kamiński <tkaminsk@redhat.com> + + PR libstdc++/121154 + * include/bits/chrono_io.h (_ChronoSpec::_M_time_point): Remove. + (_ChronoSpec::_M_needs_ok_check): Define + (__formatter_chrono::_M_parse): Set _M_needs_ok_check. + (__formatter_chrono::_M_check_ok): Check values also for debug mode, + and return __string_view. + (__formatter_chrono::_M_format_to): Handle results of _M_check_ok. + (__formatter_chrono::_M_wi, __formatter_chrono::_M_a_A) + (__formatter_chrono::_M_b_B, __formatter_chrono::_M_C_y_Y) + (__formatter_chrono::_M_d_e, __formatter_chrono::_M_F): + Removed handling of _M_debug. + (__formatter_chrono::__M_m): Print zero unpadded in _M_debug mode. + (__formatter_duration::_S_spec_for): Remove _M_time_point refernce. + (__formatter_duration::_M_parse): Override _M_needs_ok_check. + * testsuite/std/time/month/io.cc: Test for localized !ok() values. + * testsuite/std/time/weekday/io.cc: Test for localized !ok() values. + +2025-07-18 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/121150 + * testsuite/20_util/hash/int128.cc: Cast expected values to + size_t. + +2025-07-18 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/unicode.h (_Utf_iterator::operator--): Reorder + conditions and update position after reading a code unit. + (_Utf_iterator::_M_read_reverse): Define. + (_Utf_iterator::_M_read_utf8): Return extracted code point. + (_Utf_iterator::_M_read_reverse_utf8): Define. + (_Utf_iterator::_M_read_reverse_utf16): Define. + (_Utf_iterator::_M_read_reverse_utf32): Define. + * testsuite/ext/unicode/view.cc: Add checks for reversed views + and reverse iteration. + +2025-07-18 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/unicode.h (_Utf_iterator): Reorder data members + to be more compact. + +2025-07-18 Jonathan Wakely <jwakely@redhat.com> + Tomasz Kamiński <tkaminsk@redhat.com> + + PR libstdc++/119137 + * doc/doxygen/user.cfg.in (INPUT): Add new header. + * include/Makefile.am: Add new header. + * include/Makefile.in: Regenerate. + * include/bits/stl_iterator_base_types.h (__any_input_iterator): + Define. + * include/bits/version.def (inplace_vector): Define. + * include/bits/version.h: Regenerate. + * include/precompiled/stdc++.h: Include new header. + * src/c++23/std.cc.in: Export contents if new header. + * include/std/inplace_vector: New file. + * testsuite/23_containers/inplace_vector/access/capacity.cc: New file. + * testsuite/23_containers/inplace_vector/access/elem.cc: New file. + * testsuite/23_containers/inplace_vector/access/elem_neg.cc: New file. + * testsuite/23_containers/inplace_vector/cons/1.cc: New file. + * testsuite/23_containers/inplace_vector/cons/from_range.cc: New file. + * testsuite/23_containers/inplace_vector/cons/throws.cc: New file. + * testsuite/23_containers/inplace_vector/copy.cc: New file. + * testsuite/23_containers/inplace_vector/erasure.cc: New file. + * testsuite/23_containers/inplace_vector/modifiers/assign.cc: New file. + * testsuite/23_containers/inplace_vector/modifiers/erase.cc: New file. + * testsuite/23_containers/inplace_vector/modifiers/multi_insert.cc: + New file. + * testsuite/23_containers/inplace_vector/modifiers/single_insert.cc: + New file. + * testsuite/23_containers/inplace_vector/move.cc: New file. + * testsuite/23_containers/inplace_vector/relops.cc: New file. + * testsuite/23_containers/inplace_vector/version.cc: New file. + * testsuite/util/testsuite_iterators.h (input_iterator_wrapper::base): + Define. + +2025-07-17 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/96710 + * doc/xml/manual/evolution.xml: Document change or __int128. + * doc/html/manual/api.html: Regenerate. + +2025-07-17 Luc Grosheintz <luc.grosheintz@gmail.com> + + PR libstdc++/121061 + * include/std/mdspan (extents::extents): Perform conversion to + index_type of an r-value reference. + (layout_left::mapping::operator()): Ditto. + (layout_right::mapping::operator()): Ditto. + (layout_stride::mapping::operator()): Ditto. + * testsuite/23_containers/mdspan/extents/custom_integer.cc: Add + tests for RValueInt and MutatingInt. + * testsuite/23_containers/mdspan/int_like.h (RValueInt): Add. + * testsuite/23_containers/mdspan/layouts/mapping.cc: Test with + RValueInt. + * testsuite/23_containers/mdspan/mdspan.cc: Ditto. + +2025-07-17 Luc Grosheintz <luc.grosheintz@gmail.com> + + PR libstdc++/121061 + * include/std/mdspan (extents::extents): Fix constraint to + prevent non-const conversion to index_type. + (layout_stride::mapping::mapping): Ditto. + (mdspan::mdspan): Ditto. + (mdspan::operator[]): Ditto. + * testsuite/23_containers/mdspan/extents/custom_integer.cc: Add + test for MutatingInt. + * testsuite/23_containers/mdspan/int_like.h (MutatingInt): Add. + * testsuite/23_containers/mdspan/layouts/mapping.cc: Add test for + MutatingInt. + * testsuite/23_containers/mdspan/layouts/stride.cc: Ditto. + * testsuite/23_containers/mdspan/mdspan.cc: Ditto. + +2025-07-17 Luc Grosheintz <luc.grosheintz@gmail.com> + + PR libstdc++/121061 + * testsuite/23_containers/mdspan/extents/custom_integer.cc: + Enable checking with different custom integers. Improve + checking non-existence of overloads for incompatible custom + integers. + * testsuite/23_containers/mdspan/layouts/mapping.cc: ditto. Also + improve reuse of int_like.h. + * testsuite/23_containers/mdspan/layouts/stride.cc: ditto. + * testsuite/23_containers/mdspan/mdspan.cc: ditto. + * testsuite/23_containers/mdspan/extents/int_like.h: Rename (old + name). + * testsuite/23_containers/mdspan/int_like.h: Rename (new name). + (ThrowingInt): Add. + (NotIntLike): Add. + +2025-07-17 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/unicode.h (__unicode::_Utf_iterator): Add + comments. + (__unicode:_Utf_iterator::operator++()): Check whether to + iterate over the buffer first. + +2025-07-17 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/121097 + * include/c_global/cmath (hypot): Use __promote_3 instead of + __promoted. + +2025-07-16 Jonathan Wakely <jwakely@redhat.com> + + * include/std/bitset (__bitset::__string) [__cpp_lib_bitset]: + Change alias to refer to basic_string_view instead. + +2025-07-16 Tomasz Kamiński <tkaminsk@redhat.com> + + PR libstdc++/121114 + * include/bits/version.def (constexpr_exceptions): Add no_stdname + and changed value. + * include/bits/version.h: Regenerated. + * testsuite/18_support/exception/version.cc: Test that macro is + not exported. + +2025-07-15 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/move.h (swap): Replace enable_if with concepts + when available, and with __enable_if_t alias otherwise. + +2025-07-15 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/ranges_base.h (ranges::advance(i, n, bound)): + Ensure that observable side effects on iterators match what is + specified in the standard. + +2025-07-15 Patrick Palka <ppalka@redhat.com> + + PR libstdc++/119962 + * include/std/ranges (join_view::_Iterator::_M_outer): Initialize. + (lazy_split_view::_OuterIter::_M_current): Initialize. + (join_with_view::_Iterator::_M_outer_it): Initialize. + * testsuite/std/ranges/adaptors/join.cc (test15): New test. + * testsuite/std/ranges/adaptors/join_with/1.cc (test05): New test. + * testsuite/std/ranges/adaptors/lazy_split.cc (test13): New test. + +2025-07-15 Björn Schäpers <bjoern@hazardy.de> + + PR libstdc++/108409 + * scripts/gen_windows_zones_map.py: New file, generates + windows_zones-map.h. + * src/c++20/windows_zones-map.h: New file, contains the look up + table. + * src/c++20/tzdb.cc (tzdb::current_zone): Add Windows code path. + +2025-07-15 Björn Schäpers <bjoern@hazardy.de> + + * src/c++20/tzdb.cc (zoneinfo_file): On Windows look relative + from the DLL path for the time zone information. + +2025-07-15 Jonathan Wakely <jwakely@redhat.com> + + * testsuite/25_algorithms/copy/debug/constexpr_neg.cc: + * testsuite/25_algorithms/copy_backward/debug/constexpr_neg.cc: + * testsuite/25_algorithms/equal/debug/constexpr_neg.cc: + * testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_neg.cc: + * testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_pred_neg.cc: + * testsuite/25_algorithms/lower_bound/debug/constexpr_valid_range_neg.cc: + * testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_neg.cc: + * testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_pred_neg.cc: + * testsuite/25_algorithms/upper_bound/debug/constexpr_valid_range_neg.cc: + +2025-07-15 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/121024 + * include/bits/ranges_uninitialized.h (ranges::destroy): Do not + optimize away trivial destructors during constant evaluation. + (ranges::destroy_n): Likewise. + * testsuite/20_util/specialized_algorithms/destroy/121024.cc: + New test. + +2025-07-15 Jonathan Wakely <jwakely@redhat.com> + + * include/experimental/memory (swap, make_observer_ptr): Add + constexpr. + (operator==, operator!=, operator<, operator>, operator<=) + (operator>=): Likewise. + * testsuite/experimental/memory/observer_ptr/make_observer.cc: + Checks for constant evaluation. + * testsuite/experimental/memory/observer_ptr/relops/relops.cc: + Likewise. + * testsuite/experimental/memory/observer_ptr/swap/swap.cc: + Likewise. + +2025-07-15 Jonathan Wakely <jwakely@redhat.com> + + * include/std/type_traits (__make_unsigned_selector): Add + unsigned __int128 to type list. + * testsuite/20_util/make_unsigned/int128.cc: New test. + +2025-07-15 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/96710 + * include/bits/functional_hash.h (hash<__int128>): Define for + strict modes. + (hash<unsigned __int128>): Likewise. + * testsuite/20_util/hash/int128.cc: New test. + +2025-07-15 Tomasz Kamiński <tkaminsk@redhat.com> + + PR libstdc++/110739 + * include/bits/chrono_io.h (__formatter_chrono::_S_weekdays) + (__formatter_chrono::_S_months, __formatter_chrono::_S_fill_ampm): + Define. + (__formatter_chrono::_M_format_to): Do not pass context parameter + to functions listed below. + (__formatter_chrono::_M_a_A, __formatter_chrono::_M_b_B): Implement + using harcoded list of names, and remove format context parameter. + (__formatter_chrono::_M_p, __formatter_chrono::_M_r): Implement + using _S_fill_ampm. + (__formatter_chrono::_M_c): Removed format context parameter. + (__formatter_chrono::_M_subsecs): Call __ctx.locale() directly, + instead of _M_locale and do not compare with locale::classic(). + Add [[unlikely]] attributes. + (__formatter_chrono::_M_locale): Move to __formatter_duration. + (__formatter_duration::_M_locale): Moved from __formatter_chrono. + +2025-07-14 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/stl_pair.h (swap): Add comment to deleted + overload. + * include/bits/unique_ptr.h (swap): Likewise. + * include/std/array (swap): Likewise. + * include/std/optional (swap): Likewise. + * include/std/tuple (swap): Likewise. + * include/std/variant (swap): Likewise. + * testsuite/23_containers/array/tuple_interface/get_neg.cc: + Adjust dg-error line numbers. + +2025-07-14 Jonathan Wakely <jwakely@redhat.com> + + * include/pstl/algorithm_impl.h (__for_each_n_it_serial): + Protect against overloaded comma operator. + (__brick_walk2): Likewise. + (__brick_walk2_n): Likewise. + (__brick_walk3): Likewise. + (__brick_move_destroy::operator()): Likewise. + (__brick_calc_mask_1): Likewise. + (__brick_copy_by_mask): Likewise. + (__brick_partition_by_mask): Likewise. + (__brick_calc_mask_2): Likewise. + (__brick_reverse): Likewise. + (__pattern_partial_sort_copy): Likewise. + * include/pstl/memory_impl.h (__brick_uninitialized_move): + Likewise. + (__brick_uninitialized_copy): Likewise. + * include/pstl/numeric_impl.h (__brick_transform_scan): + Likewise. + +2025-07-14 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/117785 + * include/bits/version.def (constexpr_exceptions): Define + correct value. + * include/bits/version.h: Regenerate. + * libsupc++/exception: Check correct value. + * testsuite/18_support/exception/version.cc: New test. + +2025-07-14 Jonathan Wakely <jwakely@redhat.com> + + * libsupc++/exception_ptr.h (make_exception_ptr): Return null + for consteval when -fno-exceptions is used. + (exception_ptr_cast): Likewise. Allow consteval path to work + with -fno-rtti. + +2025-07-11 Jakub Jelinek <jakub@redhat.com> + + * libsupc++/exception_ptr.h: Implement C++26 P3748R0 - Inspecting + exception_ptr should be constexpr. + (std::exception_ptr_cast): Make constexpr, remove inline keyword. Add + static_asserts for Mandates. For if consteval use std::rethrow_exception, + catch it and return its address or nullptr. + * testsuite/18_support/exception_ptr/exception_ptr_cast.cc (E::~E): Add + constexpr. + (G::G): Likewise. + (test01): Likewise. Return bool and take bool argument, throw if the + argument is true. Add static_assert(test01(false)). + (main): Call test01(true) in try. + +2025-07-11 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/cpp_type_traits.h (__is_floating<__float128>): + Do not depend on __STRICT_ANSI__. + * include/bits/stl_algobase.h (__size_to_integer(__float128)): + Likewise. + * include/std/type_traits (__is_floating_point_helper<__float128>): + Likewise. + +2025-07-11 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/96710 + * include/bits/cpp_type_traits.h (__is_integer): Define explicit + specializations for __int128. + (__memcpyable_integer): Remove explicit specializations for + __int128. + * include/bits/iterator_concepts.h (incrementable_traits): + Likewise. + (__is_signed_int128, __is_unsigned_int128, __is_int128): Remove. + (__is_integer_like, __is_signed_integer_like): Remove check for + __int128. + * include/bits/max_size_type.h: Remove all uses of __is_int128 + in constraints. + * include/bits/ranges_base.h (__to_unsigned_like): Remove + overloads for __int128. + (ranges::ssize): Remove special case for __int128. + * include/bits/stl_algobase.h (__size_to_integer): Define + __int128 overloads for strict modes. + * include/ext/numeric_traits.h (__is_integer_nonstrict): Remove + explicit specializations for __int128. + * include/std/charconv (to_chars): Define overloads for + __int128. + * include/std/format (__format::make_unsigned_t): Remove. + (__format::to_chars): Remove. + * include/std/limits (numeric_limits): Define explicit + specializations for __int128. + * include/std/type_traits (__is_integral_helper): Likewise. + (__make_unsigned, __make_signed): Likewise. + +2025-07-10 Jakub Jelinek <jakub@redhat.com> + + PR c++/117785 + * include/bits/version.def (constexpr_exceptions): New. + * include/bits/version.h: Regenerate. + * libsupc++/exception (std::bad_exception::bad_exception): Add + _GLIBCXX26_CONSTEXPR. + (std::bad_exception::~bad_exception, std::bad_exception::what): For + C++26 add constexpr and define inline. + * libsupc++/exception.h (std::exception::exception, + std::exception::operator=): Add _GLIBCXX26_CONSTEXPR. + (std::exception::~exception, std::exception::what): For C++26 add + constexpr and define inline. + * libsupc++/exception_ptr.h (std::make_exception_ptr): Add + _GLIBCXX26_CONSTEXPR. For if consteval use just throw with + current_exception() in catch. + (std::exception_ptr::exception_ptr(void*)): For C++26 add constexpr + and define inline. + (std::exception_ptr::exception_ptr()): Add _GLIBCXX26_CONSTEXPR. + (std::exception_ptr::exception_ptr(const exception_ptr&)): Likewise. + Use __builtin_eh_ptr_adjust_ref if consteval and compiler has it + instead of _M_addref. + (std::exception_ptr::exception_ptr(nullptr_t)): Add + _GLIBCXX26_CONSTEXPR. + (std::exception_ptr::exception_ptr(exception_ptr&&)): Likewise. + (std::exception_ptr::operator=): Likewise. + (std::exception_ptr::~exception_ptr): Likewise. Use + __builtin_eh_ptr_adjust_ref if consteval and compiler has it + instead of _M_release. + (std::exception_ptr::swap): Add _GLIBCXX26_CONSTEXPR. + (std::exception_ptr::operator bool): Likewise. + (std::exception_ptr::operator==): Likewise. + * libsupc++/nested_exception.h + (std::nested_exception::nested_exception): Add _GLIBCXX26_CONSTEXPR. + (std::nested_exception::operator=): Likewise. + (std::nested_exception::~nested_exception): For C++26 add constexpr + and define inline. + (std::nested_exception::rethrow_if_nested): Add _GLIBCXX26_CONSTEXPR. + (std::nested_exception::nested_ptr): Likewise. + (std::_Nested_exception::_Nested_exception): Likewise. + (std::throw_with_nested, std::rethrow_if_nested): Likewise. + * libsupc++/new (std::bad_alloc::bad_alloc): Likewise. + (std::bad_alloc::operator=): Likewise. + (std::bad_alloc::~bad_alloc): For C++26 add constexpr and define + inline. + (std::bad_alloc::what): Likewise. + (std::bad_array_new_length::bad_array_new_length): Add + _GLIBCXX26_CONSTEXPR. + (std::bad_array_new_length::~bad_array_new_length): For C++26 add + constexpr and define inline. + (std::bad_array_new_length::what): Likewise. + * libsupc++/typeinfo (std::bad_cast::bad_cast): Add + _GLIBCXX26_CONSTEXPR. + (std::bad_cast::~bad_cast): For C++26 add constexpr and define inline. + (std::bad_cast::what): Likewise. + (std::bad_typeid::bad_typeid): Add _GLIBCXX26_CONSTEXPR. + (std::bad_typeid::~bad_typeid): For C++26 add constexpr and define + inline. + (std::bad_typeid::what): Likewise. + +2025-07-10 Jakub Jelinek <jakub@redhat.com> + + * testsuite/22_locale/codecvt/codecvt_unicode.h + (ucs2_to_utf8_out_error): Comment spelling fix: bellow -> below. + (utf16_to_ucs2_in_error): Likewise. + +2025-07-09 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/stl_uninitialized.h (__uninitialized_default): + Do not use optimized implementation for constexpr case. Use + _GLIBCXX20_CONSTEXPR instead of _GLIBCXX26_CONSTEXPR. + +2025-07-09 Jonathan Wakely <jwakely@redhat.com> + + * include/std/mdspan (mdspan): Add template keyword for + dependent name. + +2025-07-09 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/120997 + * include/std/span (span::first, span::last, span::subspan): Do + not use braced-init-list for return statements. + * testsuite/23_containers/span/120997.cc: New test. + +2025-07-09 Paul Keir <pkeir@outlook.com> + + PR libstdc++/117403 + * include/bits/shared_ptr.h (shared_ptr::owner_equal) + (shared_ptr::owner_hash, weak_ptr::owner_equal) + (weak_ptr::owner_hash): Define new member functions. + * include/bits/shared_ptr_base.h (owner_equal, owner_hash): + Define new structs. + * include/bits/version.def (smart_ptr_owner_equality): Define. + * include/bits/version.h: Regenerate. + * include/std/memory: Added define for + __glibcxx_want_smart_ptr_owner_equality. + * testsuite/20_util/owner_equal/version.cc: New test. + * testsuite/20_util/owner_equal/cmp.cc: New test. + * testsuite/20_util/owner_equal/noexcept.cc: New test. + * testsuite/20_util/owner_hash/cmp.cc: New test. + * testsuite/20_util/owner_hash/noexcept.cc: New test. + * testsuite/20_util/shared_ptr/observers/owner_equal.cc: New + test. + * testsuite/20_util/shared_ptr/observers/owner_hash.cc: + New test. + * testsuite/20_util/weak_ptr/observers/owner_equal.cc: New test. + * testsuite/20_util/weak_ptr/observers/owner_hash.cc: New test. + +2025-07-09 Mateusz Zych <mte.zych@gmail.com> + + * include/bits/max_size_type.h (numeric_limits<__max_size_type>): + New members. + (numeric_limits<__max_diff_type>): Likewise. + * testsuite/std/ranges/iota/max_size_type.cc: New test cases. + +2025-07-09 Jonathan Wakely <jwakely@redhat.com> + + * src/c++17/memory_resource.cc: Adjust indentation of unnamed + namespaces. + (pool_sizes): Add comment. + (choose_block_size): Move outside preprocessor group for + gthreads targets. + * testsuite/20_util/synchronized_pool_resource/118681.cc: + Require gthreads. + +2025-07-09 H.J. Lu <hjl.tools@gmail.com> + + * config/abi/post/x86_64-linux-gnu/x32/baseline_symbols.txt: + Updated. + +2025-07-08 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/118681 + * testsuite/20_util/unsynchronized_pool_resource/118681.cc: Fix + deallocate argument. + +2025-07-08 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/118681 + * src/c++17/memory_resource.cc (choose_block_size): New + function. + (synchronized_pool_resource::do_allocate): Use choose_block_size + to determine appropriate block size. + (synchronized_pool_resource::do_deallocate): Likewise + (unsynchronized_pool_resource::do_allocate): Likewise. + (unsynchronized_pool_resource::do_deallocate): Likewise + * testsuite/20_util/synchronized_pool_resource/118681.cc: New + test. + * testsuite/20_util/unsynchronized_pool_resource/118681.cc: New + test. + +2025-07-08 Jonathan Wakely <jwakely@redhat.com> + + * include/debug/forward_list (_Safe_forward_list<>::_M_swap): + Adapt to _M_this() signature change. + +2025-07-08 Tomasz Kamiński <tkaminsk@redhat.com> + + PR libstdc++/119861 + * include/std/format (formatter<_Rg, _CharT>::set_separator) + (formatter<_Rg, _CharT>::set_brackets): Constrain with + (format_kind<_Rg> == range_format::sequence). + * testsuite/std/format/ranges/pr119861_neg.cc: New test. + +2025-07-08 Luc Grosheintz <luc.grosheintz@gmail.com> + + PR libstdc++/120914 + * include/std/span (span): Update CTAD to enable + integral constants [P3029R1]. + * include/std/mdspan (extents): ditto. + (mdspan): ditto. + * testsuite/23_containers/span/deduction.cc: Test deduction + guide. + * testsuite/23_containers/mdspan/extents/misc.cc: ditto. + * testsuite/23_containers/mdspan/mdspan.cc: ditto. + +2025-07-08 Luc Grosheintz <luc.grosheintz@gmail.com> + + * testsuite/23_containers/span/contiguous_range_neg.cc: Silence + warning about unused variable myspan. + +2025-07-08 Luc Grosheintz <luc.grosheintz@gmail.com> + + PR libstdc++/107761 + * include/bits/version.def (mdspan): Set to 202207 and remove + no_stdname. + * include/bits/version.h: Regenerate. + * testsuite/23_containers/mdspan/version.cc: Test presence + of feature test macro. + +2025-07-08 Luc Grosheintz <luc.grosheintz@gmail.com> + + PR libstdc++/107761 + * include/std/mdspan (mdspan): New class. + * src/c++23/std.cc.in (mdspan): Add. + * testsuite/23_containers/mdspan/class_mandate_neg.cc: New test. + * testsuite/23_containers/mdspan/mdspan.cc: New test. + * testsuite/23_containers/mdspan/layout_like.h: Add class + LayoutLike which models a user-defined layout. + * testsuite/23_containers/mdspan/out_of_bounds_neg.cc: New file. + +2025-07-08 Luc Grosheintz <luc.grosheintz@gmail.com> + + * include/std/mdspan (__mdspan::__size): New function. + +2025-07-08 Luc Grosheintz <luc.grosheintz@gmail.com> + + * testsuite/23_containers/mdspan/extents/custom_integer.cc: + Delete IntLike and include "int_like.h". + * testsuite/23_containers/mdspan/extents/int_like.h: Add + IntLike. + +2025-07-08 Luc Grosheintz <luc.grosheintz@gmail.com> + + * include/std/mdspan (extents): Check prerequisite of the ctor that + static_extent(i) == dynamic_extent || extent(i) == other.extent(i). + * testsuite/23_containers/mdspan/extents/class_mandates_neg.cc: + Test the implemented prerequisite. + * testsuite/23_containers/mdspan/extents/extents_mismatch_neg.cc: New file. + +2025-07-08 Luc Grosheintz <luc.grosheintz@gmail.com> + + * include/std/mdspan: Check prerequisites of + layout_*::operator() with _GLIBCXX_DEBUG_ASSERTs. + * testsuite/23_containers/mdspan/layouts/debug/out_of_bounds_neg.cc: + Add tests for prerequisites. + +2025-07-08 Tomasz Kamiński <tkaminsk@redhat.com> + + * include/std/queue (formatter<queue<_Tp, _Container>, _CharT>) + (formatter<priority_queue<_Tp, _Container, _Compare>, _CharT>): + Add _GLIBCXX_RESOLVE_LIB_DEFECTS comments. + +2025-07-08 François Dumont <frs.dumont@gmail.com> + + PR c++/116369 + * config/abi/pre/gnu-versioned-namespace.ver: Use new const qualified symbols. + * config/abi/pre/gnu.ver: Add new const qualified symbols. + * include/debug/safe_base.h + (_Safe_iterator_base::_M_sequence): Declare as pointer-to-const. + (_Safe_iterator_base::_M_attach, _M_attach_single): New, take pointer-to-const + _Safe_sequence_base. + (_Safe_sequence_base::_M_detach_all, _M_detach_singular, _M_revalidate_singular) + (_M_swap, _M_get_mutex): New, const qualified. + (_Safe_sequence_base::_M_attach, _M_attach_single, _M_detach, _M_detach_single): + const qualify. + * include/debug/safe_container.h (_Safe_container<>::_M_cont): Add const qualifier. + (_Safe_container<>::_M_swap_base): New. + (_Safe_container(_Safe_container&&, const _Alloc&, std::false_type)): + Adapt to use latter. + (_Safe_container<>::operator=(_Safe_container&&)): Likewise. + (_Safe_container<>::_M_swap): Likewise and take parameter as const reference. + * include/debug/safe_unordered_base.h + (_Safe_local_iterator_base::_M_safe_container): New. + (_Safe_local_iterator_base::_Safe_local_iterator_base): Take + _Safe_unordered_container_base as pointer-to-const. + (_Safe_unordered_container_base::_M_attach, _M_attach_single): New, take + container as _Safe_unordered_container_base pointer-to-const. + (_Safe_unordered_container_base::_M_local_iterators, _M_const_local_iterators): + Add mutable. + (_Safe_unordered_container_base::_M_detach_all, _M_swap): New, const qualify. + (_Safe_unordered_container_base::_M_attach_local, _M_attach_local_single) + (_M_detach_local, _M_detach_local_single): Add const qualifier. + * include/debug/safe_unordered_container.h (_Safe_unordered_container::_M_self()): New. + * include/debug/safe_unordered_container.tcc + (_Safe_unordered_container::_M_invalidate_if, _M_invalidated_local_if): Use latter. + * include/debug/safe_iterator.h (_Safe_iterator<>::_M_attach, _M_attach_single): + Take _Safe_sequence_base as pointer-to-const. + (_Safe_iterator<>::_M_get_sequence): Add const_cast and comment about it. + * include/debug/safe_local_iterator.h (_Safe_local_iterator<>): Replace usages + of _M_sequence member by _M_safe_container(). + (_Safe_local_iterator<>::_M_attach, _M_attach_single): Take + _Safe_unordered_container_base as pointer-to-const. + (_Safe_local_iterator<>::_M_get_sequence): Rename into... + (_Safe_local_iterator<>::_M_get_ucontainer): ...this. Add necessary const_cast and + comment to explain it. + (_Safe_local_iterator<>::_M_is_begin, _M_is_end): Adapt. + * include/debug/safe_local_iterator.tcc: Adapt. + * include/debug/safe_sequence.h + (_Safe_sequence<>::_M_invalidate_if, _M_transfer_from_if): Add const qualifier. + * include/debug/safe_sequence.tcc: Adapt. + * include/debug/deque (std::__debug::deque::erase): Adapt to use new const + qualified methods. + * include/debug/formatter.h: Adapt. + * include/debug/forward_list (_Safe_forward_list::_M_this): Add const + qualification and return pointer for consistency with 'this' keyword. + (_Safe_forward_list::_M_swap_aux): Rename into... + (_Safe_forward_list::_S_swap_aux): ...this and take sequence as const reference. + (forward_list<>::resize): Adapt to use const methods. + * include/debug/list (list<>::resize): Likewise. + * src/c++11/debug.cc: Adapt to const qualification. + * testsuite/util/testsuite_containers.h + (forward_members_unordered::forward_members_unordered): Add check on local_iterator + conversion to const_local_iterator. + (forward_members::forward_members): Add check on iterator conversion to + const_iterator. + * testsuite/23_containers/unordered_map/const_container.cc: New test case. + * testsuite/23_containers/unordered_multimap/const_container.cc: New test case. + * testsuite/23_containers/unordered_multiset/const_container.cc: New test case. + * testsuite/23_containers/unordered_set/const_container.cc: New test case. + * testsuite/23_containers/vector/debug/mutex_association.cc: Adapt. + +2025-07-07 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/120949 + * include/bits/stl_iterator.h (__normal_iterator): Fix order of + always_inline and nodiscard attributes for Clang compatibility. + +2025-07-07 Jonathan Wakely <jwakely@redhat.com> + + * testsuite/util/testsuite_hooks.h (VERIFY): Define as variadic + macro. + * testsuite/ext/verify_neg.cc: New test. + +2025-07-07 Jonathan Wakely <jwakely@redhat.com> + + * include/std/mdspan (__mapping_of): Add template keyword. + +2025-07-07 XU Kailiang <xu2k3l4@outlook.com> + Tomasz Kaminski <tkaminsk@redhat.com> + + PR libstdc++/117214 + * include/bits/chrono_io.h (_ChronoSpec::_M_time_only): Remove. + (_ChronoSpec::_M_time_point): Define. + (__formatter_chrono::_M_parse): Use __parts to determine + interpretation of j. + (__formatter_chrono::_M_check_ok): Define. + (__formatter_chrono::_M_format_to): Invoke _M_check_ok. + (__formatter_chrono::_M_a_A, __formatter_chrono::_M_b_B): Move + exception throwing to _M_check_ok. + (__formatter_chrono::_M_j): Use _M_needs to define interpretation. + (__formatter_duration::_S_spec_for): Set _M_time_point. + * testsuite/std/time/format/format.cc: Test for exception for !ok() + months/weekday. + * testsuite/std/time/format/pr117214_custom_timeput.cc: New + test. + +2025-07-07 Tomasz Kamiński <tkaminsk@redhat.com> + + PR libstdc++/120976 + * include/std/format (formatter<__float128, _Char_T): Define if + _GLIBCXX_FORMAT_F128 == 2. + +2025-07-06 Patrick Palka <ppalka@redhat.com> + + * include/bits/ranges_algo.h (shift_left, shift_right): Guard + with __glibcxx_shift >= 201806L. + (ranges::__shift_left_fn, ranges::shift_left): Define for C++23. + (ranges::__shift_right_fn, ranges::shift_right): Likewise. + * include/bits/version.def (shift): Update for C++23. + * include/bits/version.h: Regenerate. + * src/c++23/std.cc.in: Add ranges::shift_left/right. + * testsuite/25_algorithms/shift_left/constrained.cc: New test, + based off of 1.cc. + * testsuite/25_algorithms/shift_right/constrained.cc: New test, + based off of 1.cc. + +2025-07-04 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/chrono_io.h (__formatter_duration::_S_spec_for): + Add default case to switch and use __builtin_unreachable. + +2025-07-04 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/stl_algobase.h (__size_to_integer): Move + misplaced unsigned keyword on __size_to_integer overloads for + __GLIBCXX_TYPE_INT_N_3 integer type. + +2025-07-03 Nathan Myers <ncm@cantrip.org> + + * include/bits/version.def: Fix typo. + * include/bits/version.h: Rebuilt. + +2025-07-03 Patrick Palka <ppalka@redhat.com> + + PR libstdc++/120934 + * include/std/ranges (concat_view::end): Refine condition + for returning an iterator instead of default_sentinel as + per the updated P/R for LWG 4166. + * testsuite/std/ranges/concat/1.cc (test05): New test. + +2025-07-03 Nathan Myers <ncm@cantrip.org> + + PR libstdc++/119742 + * include/bits/version.def: Add preprocessor symbol. + * include/bits/version.h: Add preprocessor symbol. + * include/std/bitset: Add constructor. + * testsuite/20_util/bitset/cons/1.cc: Fix. + * testsuite/20_util/bitset/cons/6282.cc: Fix. + * testsuite/20_util/bitset/cons/string_view.cc: Test new ctor. + * testsuite/20_util/bitset/cons/string_view_wide.cc: Test new ctor. + +2025-07-03 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/120931 + * include/bits/stl_uninitialized.h (__uninitialized_fill<true>): + Fix typo resulting in call to __do_uninit_copy instead of + __do_uninit_fill. + * testsuite/20_util/specialized_algorithms/uninitialized_fill/120931.cc: + New test. + +2025-07-02 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/stl_iterator.h (__normal_iterator): Make all + non-member operators hidden friends, except ... + (operator<=>(__normal_iterator<I,C>, __normal_iterator<I,C>)): + Remove. + * src/c++11/string-inst.cc: Remove explicit instantiations of + operators that are no longer templates. + * src/c++23/std.cc.in (__gnu_cxx): Do not export operators for + __normal_iterator. + +2025-07-02 Nathan Myers <ncm@cantrip.org> + + PR libstdc++/119744 + * include/std/ranges: View ctors become explicit. + +2025-07-01 Patrick Palka <ppalka@redhat.com> + + PR libstdc++/120789 + * include/bits/ranges_algo.h (__remove_if_fn::operator()): Use + ranges::iter_move(iter) instead of std::move(*iter). + * testsuite/25_algorithms/remove_if/120789.cc: New test. + +2025-07-01 Patrick Palka <ppalka@redhat.com> + + PR libstdc++/120789 + * include/bits/ranges_algo.h (__unique_fn::operator()): Use + ranges::iter_move(iter) instead of std::move(*iter). + * testsuite/25_algorithms/unique/120789.cc: New test. + +2025-07-01 Luc Grosheintz <luc.grosheintz@gmail.com> + + * include/std/mdspan (default_accessor): New class. + * src/c++23/std.cc.in: Register default_accessor. + * testsuite/23_containers/mdspan/accessors/default.cc: New test. + * testsuite/23_containers/mdspan/accessors/default_neg.cc: New test. + +2025-06-27 Patrick Palka <ppalka@redhat.com> + + PR libstdc++/100795 + * include/bits/ranges_algo.h (shuffle_fn::operator()): + Reimplement directly, based on the stl_algo.h implementation. + * testsuite/25_algorithms/shuffle/constrained.cc (test02): + New test. + +2025-06-27 Patrick Palka <ppalka@redhat.com> + + PR libstdc++/100795 + * include/bits/ranges_algo.h (__sample_fn::operator()): + Reimplement the forward_iterator branch directly, based + on the stl_algo.h implementation. Add explicit cast to + _Out's difference_type in the !forward_iterator branch. + * testsuite/25_algorithms/sample/constrained.cc (test02): + New test. + +2025-06-27 Patrick Palka <ppalka@redhat.com> + + PR libstdc++/100795 + * include/bits/ranges_algo.h (__detail::__introselect): New, + based on the stl_algo.h implementation. + (nth_element_fn::operator()): Reimplement in terms of the above. + * testsuite/25_algorithms/nth_element/constrained.cc: + +2025-06-27 Patrick Palka <ppalka@redhat.com> + + PR libstdc++/100795 + * include/bits/ranges_algo.h (__detail::__find_if_not_n): New, + based on the stl_algo.h implementation. + (__detail::__stable_partition_adaptive): Likewise. + (__stable_partition_fn::operator()): Reimplement in terms of + the above. + * testsuite/25_algorithms/stable_partition/constrained.cc + (test03): New test. + +2025-06-27 Patrick Palka <ppalka@redhat.com> + + PR libstdc++/100795 + * include/bits/ranges_algo.h (__detail::__move_merge): New, + based on the stl_algo.h implementation. + (__detail::__merge_sort_loop): Likewise. + (__detail::__chunk_insertion_sort): Likewise. + (__detail::__merge_sort_with_buffer): Likewise. + (__detail::__stable_sort_adaptive): Likewise. + (__detail::__stable_sort_adaptive_resize): Likewise. + (__detail::__inplace_stable_sort): Likewise. + (__stable_sort_fn::operator()): Reimplement in terms of the above. + * testsuite/25_algorithms/stable_sort/constrained.cc: + +2025-06-27 Patrick Palka <ppalka@redhat.com> + + PR libstdc++/100795 + * include/bits/ranges_algo.h (__detail::__move_merge_adaptive): + New, based on the stl_algo.h implementation. + (__detail::__move_merge_adaptive_backward): Likewise. + (__detail::__rotate_adaptive): Likewise. + (__detail::__merge_adaptive): Likewise. + (__detail::__merge_adaptive_resize): Likewise. + (__detail::__merge_without_buffer): Likewise. + (__inplace_merge_fn::operator()): Reimplement in terms of the + above. + * testsuite/25_algorithms/inplace_merge/constrained.cc (test03): + New test. + +2025-06-27 Patrick Palka <ppalka@redhat.com> + + PR libstdc++/100795 + PR libstdc++/118209 + * include/bits/max_size_type.h (__bit_width): New explicit + specialization for __max_size_type. + * include/bits/ranges_algo.h (__detail::__move_median_to_first): + New, based on the stl_algo.h implementation. + (__detail::__unguarded_liner_insert): Likewise. + (__detail::__insertion_sort): Likewise. + (__detail::__sort_threshold): Likewise. + (__detail::__unguarded_insertion_sort): Likewise. + (__detail::__final_insertion_sort): Likewise. + (__detail::__unguarded_partition): Likewise. + (__detail::__unguarded_partition_pivot): Likewise. + (__detail::__heap_select): Likewise. + (__detail::__partial_sort): Likewise. + (__detail::__introsort_loop): Likewise. + (__sort_fn::operator()): Reimplement in terms of the above. + * testsuite/25_algorithms/sort/118209.cc: New test. + * testsuite/25_algorithms/sort/constrained.cc (test03): New test. + +2025-06-27 Patrick Palka <ppalka@redhat.com> + + PR libstdc++/100795 + * include/bits/ranges_algo.h (__detail::__push_heap): New, + based on the stl_heap.h implementation. + (__push_heap_fn::operator()): Reimplement in terms of the above. + (__detail::__adjust_heap): New, based on the stl_heap.h + implementation. + (__deatil::__pop_heap): Likewise. + (__pop_heap_fn::operator()): Reimplement in terms of the above. + (__make_heap_fn::operator()): Likewise. + (__sort_heap_fn::operator()): Likewise. + * testsuite/25_algorithms/heap/constrained.cc (test03): New + test. + +2025-06-27 Tomasz Kamiński <tkaminsk@redhat.com> + + PR libstdc++/110739 + * include/bits/chrono_io.h (__formatter_chrono::_S_empty_fs): Define. + (__formatter_chrono::_S_str_d2): Use _S_str_d3 for 3+ digits and + place allways_inline attribute after comment. + (__formatter_chrono::_S_str_d3): Extracted from _S_str_d2. + (__formatter_chrono::_M_H_I, __formatter_chrono::_M_R_X): Replace + _S_empty_spec with _S_empty_fs(). + (__formatter_chrono::_M_j): Likewise and use _S_str_d3 in common + case. + (__format::operator-(_ChronoParts, _ChronoParts)) + (__format::operator-=(_ChronoParts, _ChronoParts)) + (__formatter_chrono::_S_fill_two_digits) + (__formatter_chrono::_S_str_d1): Place always_inline attribute + after comment. + +2025-06-27 Tomasz Kamiński <tkaminsk@redhat.com> + + PR libstdc++/110739 + * include/bits/chrono_io.h (__formatter_chrono::_M_format_to): + Rename _Out to _OutIter for consistency, and update calls + to specifier functions. + (__formatter_chrono::_M_wi, __formatter_chrono::_M_C_y_Y) + (__formatter_chrono::_M_D_x, __formatter_chrono::_M_d_e) + (__formatter_chrono::_M_F, __formatter_chrono::_M_g_G) + (__formatter_chrono::_M_H_I, __formatter_chrono::_M_j) + (__formatter_chrono::_M_m, __formatter_chrono::_M_M) + (__formatter_chrono::_M_q, __formatter_chrono::_M_R_X) + (__formatter_chrono::_M_u_w, __formatter_chrono::_M_U_V_W) + (__formatter_chrono::_M_z, __formatter_chrono::_M_z): + Remove _FormatContext parameter, and introduce _OutIter + for __out type. + (__formatter_chrono::_M_a_A, __formatter_chrono::_M_B_b) + (__formatter_chrono::_M_p, __formatter_chrono::_M_Q) + (__formatter_chrono::_M_r, __formatter_chrono::_M_S) + (__formatter_chrono::_M_subsecs, __formatter_chrono::_M_T): + Introduce separate _OutIter template parameter for __out. + (__formatter_chrono::_M_c, __formatter_chrono::_M_T): + Likewise, and adjust calls to specifiers functions. + * testsuite/std/time/format/empty_spec.cc: Make underlying + type for Rep configurable. + +2025-06-27 Iain Sandoe <iain@sandoe.co.uk> + + * config/abi/pre/gnu.ver: Keep the closing brace of the + CXXABI_1.3.17 symbol group together with the identifier + for the inherited group. + +2025-06-26 Tomasz Kamiński <tkaminsk@redhat.com> + + PR libstdc++/110739 + * include/bits/chrono_io.h (__formatter_chrono::_M_use_locale_fmt): + Define. + (__formatter_chrono::_M_locale_fmt): Moved to front of the class. + (__formatter_chrono::_M_format_to): Construct and initialize + struct tm and call _M_locale_fmt if needed. + (__formatter_chrono::_M_c_r_x_X): Split into separate methods. + (__formatter_chrono::_M_c, __formatter_chrono::_M_r): Define. + (__formatter_chrono::_M_D): Renamed to _M_D_x. + (__formatter_chrono::_M_D_x): Renamed from _M_D. + (__formatter_chrono::_M_R_T): Split into _M_R_X and _M_T. + (__formatter_chrono::_M_R_X): Extracted from _M_R_T. + (__formatter_chrono::_M_T): Define in terms of _M_R_X and _M_subsecs. + (__formatter_chrono::_M_subsecs): Extracted from _M_S. + (__formatter_chrono::_M_S): Replaced __mod with __subs argument, + removed _M_locale_fmt call, and delegate to _M_subsecs. + (__formatter_chrono::_M_C_y_Y, __formatter_chrono::_M_d_e) + (__formatter_chrono::_M_H_I, __formatter_chrono::_M_m) + (__formatter_chrono::_M_u_w, __formatter_chrono::_M_U_V_W): Remove + __mod argument and call to _M_locale_fmt. + +2025-06-26 Tomasz Kamiński <tkaminsk@redhat.com> + + PR libstdc++/110739 + * include/bits/chrono_io.h (__format::__no_timezone_available): + Removed, replaced with separate throws in formatter for + __local_time_fmt + (__format::_ChronoParts): Defined additional enumertors and + declared as enum class. + (__format::operator&(_ChronoParts, _ChronoParts)) + (__format::operator&=(_ChronoParts&, _ChronoParts)) + (__format::operator-(_ChronoParts, _ChronoParts)) + (__format::operator-=(_ChronoParts&, _ChronoParts)) + (__format::operator==(_ChronoParts, decltype(nullptr))) + (_ChronoSpec::_M_time_only, _ChronoSpec::_M_floating_point_rep) + (_ChronoSpec::_M_custom_rep, _ChronoSpec::_M_needed) + (_ChronoSpec::_M_needs, __format::_ChronoData): Define. + (__format::__formatter_chrono): Redefine to accept _ChronoData. + (__formatter_chrono::_M_format_to_ostream): Moved to + __formatter_duration. + (__format::__formatter_duration): Define. + (__formatter_chrono_info::format): Pass value-constructed + _ChronoData. + (std::formatter<chrono::day, _CharT>) + (std::formatter<chrono::month, _CharT>) + (std::formatter<chrono::year, _CharT>) + (std::formatter<chrono::weekday, _CharT>) + (std::formatter<chrono::weekday_indexed, _CharT>) + (std::formatter<chrono::weekday_last, _CharT>) + (std::formatter<chrono::month_day, _CharT>) + (std::formatter<chrono::month_day_last, _CharT>) + (std::formatter<chrono::month_weekday, _CharT>) + (std::formatter<chrono::month_weekday_indexed, _CharT>) + (std::formatter<chrono::month_weekday_last, _CharT>) + (std::formatter<chrono::year_month, _CharT>) + (std::formatter<chrono::year_month_day, _CharT>) + (std::formatter<chrono::year_month_day_last, _CharT>) + (std::formatter<chrono::year_month_weekday, _CharT>) + (std::formatter<chrono::year_month_weekday_indexed, _CharT>) + (std::formatter<chrono::year_month_weekday_last, _CharT>): + Construct _ChronoData in format, and configure _M_needed in + _ChronoSpec. + (std::formatter<chrono::duration<_Rep, _Period>, _CharT>) + (std::formatter<chrono::hh_mm_ss<_Duration>, _CharT>) + (std::formatter<chrono::sys_time<_Duration>, _CharT>) + (std::formatter<chrono::utc_time<_Duration>, _CharT>) + (std::formatter<chrono::tai_time<_Duration>, _CharT>) + (std::formatter<chrono::gps_time<_Duration>, _CharT>) + (std::formatter<chrono::file_time<_Duration>, _CharT>) + (std::formatter<chrono::local_time<_Duration>, _CharT>) + (std::formatter<chrono::_detail::__local_time_fmt<_Duration>, _CharT>): + Reworked in terms of __formatter_duration and _ChronoData. + (std::formatter<chrono::_detail::__utc_leap_second<_Duration>, _CharT>): + Removed. + (_Parser<_Duration>::operator()): Adjusted for _ChronoParts + being enum class. + * include/std/chrono (__detail::__utc_leap_second): Removed, + replaced with simply bumping _M_seconds in _ChronoData. + * testsuite/std/time/format/empty_spec.cc: Updated %S integral + ouput. + +2025-06-26 Jakub Jelinek <jakub@redhat.com> + + * include/bits/version.def (exception_ptr_cast): Add. + * include/bits/version.h: Regenerate. + * libsupc++/exception: Define __glibcxx_want_exception_ptr_cast before + including bits/version.h. + * libsupc++/exception_ptr.h (std::exception_ptr_cast): Define. + (std::__exception_ptr::exception_ptr::_M_exception_ptr_cast): Declare. + * libsupc++/eh_ptr.cc + (std::__exception_ptr::exception_ptr::_M_exception_ptr_cast): Define. + * src/c++23/std.cc.in (std::exception_ptr_cast): Export. + * config/abi/pre/gnu.ver: Export + _ZNKSt15__exception_ptr13exception_ptr21_M_exception_ptr_castERKSt9type_info + at CXXABI_1.3.17. + * testsuite/util/testsuite_abi.cc (check_version): Allow CXXABI_1.3.17. + * testsuite/18_support/exception_ptr/exception_ptr_cast.cc: New test. + +2025-06-26 Jakub Jelinek <jakub@redhat.com> + + * include/bits/version.def (type_order): New. + * include/bits/version.h: Regenerate. + * libsupc++/compare: Define __glibcxx_want_type_order before + including bits/version.h. + (std::type_order, std::type_order_v): New trait and template variable. + * src/c++23/std.cc.in (std::type_order, std::type_order_v): Export. + * testsuite/18_support/comparisons/type_order/1.cc: New test. + +2025-06-25 Tomasz Kamiński <tkaminsk@redhat.com> + + * testsuite/std/time/format/precision.cc: New tests. + +2025-06-25 Tomasz Kamiński <tkaminsk@redhat.com> + + PR libstdc++/120650 + * include/bits/chrono_io.h + (formatter<chrono::month_day_last,_CharT>::parse): Call _M_parse with + only Month being available. + * testsuite/std/time/format/data_not_present_neg.cc: New test. + +2025-06-24 Patrick Palka <ppalka@redhat.com> + Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/120717 + * include/std/type_traits (__maybe_complete_object_type): New + helper trait, factored out from ... + (__is_complete_or_unbounded): ... here. Only check sizeof on a + __maybe_complete_object_type type. Fix formatting. + * testsuite/20_util/is_complete_or_unbounded/120717.cc: New test. + +2025-06-16 Jason Merrill <jason@redhat.com> + + * testsuite/20_util/is_complete_or_unbounded/memoization.cc + * testsuite/20_util/is_complete_or_unbounded/memoization_neg.cc: + Expect -Wsfinae-incomplete. + +2025-06-13 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/120397 + * include/bits/stl_uninitialized.h (_UninitDestroyGuard<I,void>): + Add new member function _S_destroy and call it from the + destructor (for C++17 only). + * testsuite/20_util/specialized_algorithms/uninitialized_default_construct/120397.cc: + New test. + * testsuite/20_util/specialized_algorithms/uninitialized_value_construct/120397.cc: + New test. + +2025-06-13 Tomasz Kamiński <tkaminsk@redhat.com> + + PR libstdc++/120648 + * include/bits/chrono_io.h (__formatter_chrono::_M_format_to): + Handle %c, %r, %x and %X by passing them to _M_c_r_x_X. + (__formatter_chrono::_M_c_r_x_X): Reworked from _M_c. + (__formatter_chrono::_M_c): Renamed into above. + (__formatter_chrono::_M_r, __formatter_chrono::_M_x) + (__formatter_chrono::_M_X): Removed. + * testsuite/std/time/format/pr117214.cc: New tests for %r, %x, + %X with date, time and durations. + +2025-06-13 Patrick Palka <ppalka@redhat.com> + + * include/bits/ranges_algo.h (__detail::__by_ref_or_value_fn): New. + (__detail::_Comp_proj): New. + (__detail::__make_comp_proj): Use it instead. + (__detail::_Pred_proj): New. + (__detail::__make_pred_proj): Use it instead. + +2025-06-13 Giuseppe D'Angelo <giuseppe.dangelo@kdab.com> + + PR c++/120644 + * include/std/optional (format_kind): Do not use `auto`. + +2025-06-13 Tomasz Kamiński <tkaminsk@redhat.com> + + * testsuite/23_containers/vector/bool/format.cc: Replaced _CharT + with CharT. + * testsuite/std/format/debug.cc: Likewise. + * testsuite/std/format/ranges/adaptors.cc: Likewise. + * testsuite/std/format/ranges/formatter.cc: Likewise. + * testsuite/std/format/ranges/map.cc: Likewise. + * testsuite/std/format/ranges/sequence.cc: Likewise. + * testsuite/std/format/ranges/string.cc: Likewise. + * testsuite/std/format/tuple.cc: Likewise. + * testsuite/std/time/format/empty_spec.cc: Likewise. + * testsuite/std/time/format/pr120114.cc: Likewise. + * testsuite/std/time/format/pr120481.cc: Likewise. + * testsuite/std/time/format/precision.cc: Likewise. + +2025-06-13 Tomasz Kamiński <tkaminsk@redhat.com> + + * include/bits/chrono_io.h (__formatter_chrono::_M_format): + Remove handling of empty _M_chrono_specs. + (__formatter_chrono::_M_format_to_ostream): Changed to accept + only chrono::duration and made public. + (std::formatter<chrono::duration<_Rep, _Period>, _CharT>): + Configure __defSpec and handle empty chrono-spec locally. + +2025-06-13 Tomasz Kamiński <tkaminsk@redhat.com> + + * include/bits/chrono_io.h (__format::__formatter_chrono_info) + [_GLIBCXX_USE_CXX11_ABI || ! _GLIBCXX_USE_DUAL_ABI]: Define. + (std::formatter<chrono::sys_info, _CharT>) + (std::formatter<chrono::local_inf, _CharT>): Delegate to + __format::__formatter_chrono_info. + (std::operator<<(basic_ostream<_CharT, _Traits>& const sys_info&)): + Use format on sys_info with empty format spec. + +2025-06-13 Tomasz Kamiński <tkaminsk@redhat.com> + + * testsuite/std/time/format/whitespace.cc: New test. + +2025-06-12 Giuseppe D'Angelo <giuseppe.dangelo@kdab.com> + + PR libstdc++/119496 + * include/bits/stl_algo.h: Adjust calls to requested_size. + * include/bits/stl_tempbuf.h (requested_size): Rename with + an _M_ prefix. + * testsuite/17_intro/names.cc: Add a #define for + requested_size. + +2025-06-12 Giuseppe D'Angelo <giuseppe.dangelo@kdab.com> + + * include/bits/formatfwd.h (format_kind): Move the definition + (and some supporting code) from <format>. + * include/std/format (format_kind): Likewise. + * include/bits/version.def (optional_range_support): Add + the feature-testing macro. + * include/bits/version.h: Regenerate. + * include/std/optional (iterator, const_iterator, begin, end): + Add range support. + (enable_view): Specialize for std::optional. + (format_kind): Specialize for std::optional. + * testsuite/20_util/optional/range.cc: New test. + * testsuite/20_util/optional/version.cc: Test the new + feature-testing macro. + +2025-06-12 Tomasz Kamiński <tkaminsk@redhat.com> + + * include/bits/chrono_io.h (_ChronoFormats::_S_ftz) + (_ChronoFormats::_S_ft, _ChronoFormats::_S_t): Define. + (__formatter_chrono::_M_format_to_ostream): Remove handling for + time_points. + (std::formatter<chrono::hh_mm_ss<_Dur>, _CharT>) + (std::formatter<chrono::sys_time<_Dur>, _CharT>) + (std::formatter<chrono::utc_time<_Dur>, _CharT>) + (std::formatter<chrono::tai_time<_Dur>, _CharT>) + (std::formatter<chrono::gps_time<_Dur>, _CharT>) + (std::formatter<chrono::file_time<_Dur>, _CharT>) + (std::formatter<chrono::local_time<_Dur>, _CharT>) + (std::formatter<chrono::__detail::__local_time_fmt<_Dur>, _CharT>) + (std::formatter<chrono::zoned_time<_Dur>, _CharT>): + Define __defSpec, and pass it as argument to _M_prase and + constructor of __formatter_chrono. + +2025-06-12 Tomasz Kamiński <tkaminsk@redhat.com> + + * include/bits/chrono_io.h (__format::_ChronoFormats): Define. + (__formatter_chrono::__formatter_chrono()) + (__formatter_chrono::__formatter_chrono(_ChronoSpec<_CharT>)): Define. + (__formatter_chrono::_M_parse): Add parameter with default spec, + and merge it with new values. Handle '%\0' as weekday index + specifier. + (__formatter_chrono::_M_a_A, __formatter_chrono::_M_b_B) + (__formatter_chrono::_M_C_y_Y, __formatter_chrono::_M_d_e) + (__formatter_chrono::_M_F): Support _M_debug flag. + (__formatter_chrono::_M_wi, __formatter_chrono::_S_weekday_index): + Define. + (std::formatter<chrono::day, _CharT>) + (std::formatter<chrono::month, _CharT>) + (std::formatter<chrono::year, _CharT>) + (std::formatter<chrono::weekday, _CharT>) + (std::formatter<chrono::weekday_indexed, _CharT>) + (std::formatter<chrono::weekday_last, _CharT>) + (std::formatter<chrono::month_day, _CharT>) + (std::formatter<chrono::month_day_last, _CharT>) + (std::formatter<chrono::month_weekday, _CharT>) + (std::formatter<chrono::month_weekday_last, _CharT>) + (std::formatter<chrono::year_month, _CharT>) + (std::formatter<chrono::year_month_day, _CharT>) + (std::formatter<chrono::year_month_day_last, _CharT>) + (std::formatter<chrono::year_month_weekday, _CharT>) + (std::formatter<chrono::year_month_weekday_last, _CharT>): + Define __defSpec, and pass it as argument to _M_parse and + constructor of __formatter_chrono. + +2025-06-12 Tomasz Kamiński <tkaminsk@redhat.com> + + * include/std/mdspan (__mdspan::__mapping_alike): Rename template + parameter from M to _M_p. + (layout_right::mapping): Replace class with typename in template + head. + (layout_stride::mapping): Fix typo in comment. + * testsuite/23_containers/mdspan/layouts/class_mandate_neg.cc: + Changed B to function. + +2025-06-12 Luc Grosheintz <luc.grosheintz@gmail.com> + + * include/std/mdspan (layout_left): Strengthen the exception + guarantees of layout_left::mapping(layout_stride::mapping). + * testsuite/23_containers/mdspan/layouts/ctors.cc: + Simplify tests to reflect the change. + +2025-06-12 Luc Grosheintz <luc.grosheintz@gmail.com> + + * testsuite/23_containers/mdspan/layouts/class_mandate_neg.cc: Add + tests for layout_stride. + * testsuite/23_containers/mdspan/layouts/ctors.cc: Add test for + layout_stride and the interaction with other layouts. + * testsuite/23_containers/mdspan/layouts/empty.cc: Ditto. + * testsuite/23_containers/mdspan/layouts/mapping.cc: Ditto. + * testsuite/23_containers/mdspan/layouts/stride.cc: New test. + +2025-06-12 Luc Grosheintz <luc.grosheintz@gmail.com> + + * include/std/mdspan (layout_stride): New class. + * src/c++23/std.cc.in: Add layout_stride. + +2025-06-12 Luc Grosheintz <luc.grosheintz@gmail.com> + + * testsuite/23_containers/mdspan/layouts/class_mandate_neg.cc: Add + tests for layout_right. + * testsuite/23_containers/mdspan/layouts/ctors.cc: Add tests for + layout_right and the interaction with layout_left. + * testsuite/23_containers/mdspan/layouts/empty.cc: ditto. + * testsuite/23_containers/mdspan/layouts/mapping.cc: ditto. + +2025-06-12 Luc Grosheintz <luc.grosheintz@gmail.com> + + * include/std/mdspan (layout_right): New class. + * src/c++23/std.cc.in: Add layout_right. + +2025-06-12 Luc Grosheintz <luc.grosheintz@gmail.com> + + * testsuite/23_containers/mdspan/layouts/class_mandate_neg.cc: New test. + * testsuite/23_containers/mdspan/layouts/ctors.cc: New test. + * testsuite/23_containers/mdspan/layouts/empty.cc: New test. + * testsuite/23_containers/mdspan/layouts/mapping.cc: New test. + +2025-06-12 Luc Grosheintz <luc.grosheintz@gmail.com> + + * include/std/mdspan (layout_left): New class. + * src/c++23/std.cc.in: Add layout_left. + +2025-06-12 Luc Grosheintz <luc.grosheintz@gmail.com> + + * include/std/mdspan(__mdspan::_ExtentsStorage): Change name + of private member _M_dynamic_extens to _M_dyn_exts. + (extents): Change name of private member from _M_dynamic_extents + to _M_exts. + Fix two instances of whitespace errors. + * testsuite/23_containers/mdspan/extents/ctor_default.cc: Fix + integer comparison with cmp_equal. + +2025-06-12 Jonathan Wakely <jwakely@redhat.com> + + * doc/xml/manual/test.xml: Improve discussion of copyright + notices in new test cases. + * doc/html/manual/test.html: Regenerate. + +2025-06-12 Jonathan Wakely <jwakely@redhat.com> + + * scripts/create_testsuite_files: Remove incorrect comment about + filtering out wchar_t tests. + +2025-06-12 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/120625 + * include/std/format (__format::__disabled): Remove. + (__formatter_disabled): New type. + (formatter<char*, wchar_t>, formatter<const char*, wchar_t>) + (formatter<char[N], wchar_t>, formatter<string, wchar_t>) + (formatter<string_view, wchar_t>): Use __formatter_disabled as + base class instead of formatter<__disabled, wchar_t>. + * testsuite/std/format/formatter/120625.cc: New test. + +2025-06-11 Jonathan Wakely <jwakely@redhat.com> + + * doc/doxygen/user.cfg.in (PREDEFINED): Remove -D prefixes from + some macros. Define _GLIBCXX_USE_BUILTIN_TRAIT and + _GLIBCXX_HAVE_ICONV macros. + +2025-06-11 Jonathan Wakely <jwakely@redhat.com> + + * libsupc++/exception: Remove redundant parentheses and adjust + whitespace. + +2025-06-11 Jonathan Wakely <jwakely@redhat.com> + + * include/std/type_traits: Restore @cond and @endcond balance. + +2025-06-11 Tomasz Kamiński <tkaminsk@redhat.com> + + * testsuite/std/time/format/empty_spec.cc: New tests. + * testsuite/std/time/format/precision.cc: New test. + +2025-06-11 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/stl_construct.h: Replace std::__addressof with + std::addressof in code that doesn't need to compile as C++98. + Replace std::__is_constant_evaluated with + std::is_constant_evaluated in code that doesn't need to compile + as C++17 or earlier. + * include/bits/stl_uninitialized.h: Likewise for __addressof. + +2025-06-11 Jonathan Wakely <jwakely@redhat.com> + + * doc/xml/manual/test.xml: Remove note about unused 'test' + variables for old definition of VERIFY. + * doc/html/manual/test.html: Regenerate. + * testsuite/experimental/net/buffer/arithmetic.cc: Remove unused + variable. + * testsuite/experimental/net/buffer/const.cc: Likewise. + * testsuite/experimental/net/buffer/mutable.cc: Likewise. + * testsuite/experimental/net/buffer/size.cc: Likewise. + * testsuite/experimental/net/timer/waitable/cons.cc: Likewise. + * testsuite/experimental/net/timer/waitable/dest.cc: Likewise. + * testsuite/experimental/net/timer/waitable/ops.cc: Likewise. + * testsuite/ext/special_functions/airy_ai/check_value.cc: + Likewise. + * testsuite/ext/special_functions/airy_bi/check_value.cc: + Likewise. + * testsuite/ext/special_functions/conf_hyperg/check_value.cc: + Likewise. + * testsuite/ext/special_functions/hyperg/check_value.cc: + Likewise. + * testsuite/special_functions/01_assoc_laguerre/check_value.cc: + Likewise. + * testsuite/special_functions/02_assoc_legendre/check_value.cc: + Likewise. + * testsuite/special_functions/02_assoc_legendre/pr86655.cc: + Likewise. + * testsuite/special_functions/03_beta/check_value.cc: Likewise. + * testsuite/special_functions/04_comp_ellint_1/check_value.cc: + Likewise. + * testsuite/special_functions/05_comp_ellint_2/check_value.cc: + Likewise. + * testsuite/special_functions/06_comp_ellint_3/check_value.cc: + Likewise. + * testsuite/special_functions/07_cyl_bessel_i/check_value.cc: + Likewise. + * testsuite/special_functions/08_cyl_bessel_j/check_value.cc: + Likewise. + * testsuite/special_functions/09_cyl_bessel_k/check_value.cc: + Likewise. + * testsuite/special_functions/10_cyl_neumann/check_value.cc: + Likewise. + * testsuite/special_functions/11_ellint_1/check_value.cc: + Likewise. + * testsuite/special_functions/12_ellint_2/check_value.cc: + Likewise. + * testsuite/special_functions/13_ellint_3/check_value.cc: + Likewise. + * testsuite/special_functions/14_expint/check_value.cc: + Likewise. + * testsuite/special_functions/15_hermite/check_value.cc: + Likewise. + * testsuite/special_functions/16_laguerre/check_value.cc: + Likewise. + * testsuite/special_functions/17_legendre/check_value.cc: + Likewise. + * testsuite/special_functions/18_riemann_zeta/check_value.cc: + Likewise. + * testsuite/special_functions/19_sph_bessel/check_value.cc: + Likewise. + * testsuite/special_functions/20_sph_legendre/check_value.cc: + Likewise. + * testsuite/special_functions/20_sph_legendre/pr86655.cc: + Likewise. + * testsuite/special_functions/21_sph_neumann/check_value.cc: + Likewise. + * testsuite/tr1/5_numerical_facilities/special_functions/01_assoc_laguerre/check_value.cc: + Likewise. + * testsuite/tr1/5_numerical_facilities/special_functions/02_assoc_legendre/check_value.cc: + Likewise. + * testsuite/tr1/5_numerical_facilities/special_functions/02_assoc_legendre/pr86655.cc: + Likewise. + * testsuite/tr1/5_numerical_facilities/special_functions/03_beta/check_value.cc: + Likewise. + * testsuite/tr1/5_numerical_facilities/special_functions/04_comp_ellint_1/check_value.cc: + Likewise. + * testsuite/tr1/5_numerical_facilities/special_functions/05_comp_ellint_2/check_value.cc: + Likewise. + * testsuite/tr1/5_numerical_facilities/special_functions/06_comp_ellint_3/check_value.cc: + Likewise. + * testsuite/tr1/5_numerical_facilities/special_functions/07_conf_hyperg/check_value.cc: + Likewise. + * testsuite/tr1/5_numerical_facilities/special_functions/08_cyl_bessel_i/check_value.cc: + Likewise. + * testsuite/tr1/5_numerical_facilities/special_functions/09_cyl_bessel_j/check_value.cc: + Likewise. + * testsuite/tr1/5_numerical_facilities/special_functions/10_cyl_bessel_k/check_value.cc: + Likewise. + * testsuite/tr1/5_numerical_facilities/special_functions/11_cyl_neumann/check_value.cc: + Likewise. + * testsuite/tr1/5_numerical_facilities/special_functions/12_ellint_1/check_value.cc: + Likewise. + * testsuite/tr1/5_numerical_facilities/special_functions/13_ellint_2/check_value.cc: + Likewise. + * testsuite/tr1/5_numerical_facilities/special_functions/14_ellint_3/check_value.cc: + Likewise. + * testsuite/tr1/5_numerical_facilities/special_functions/15_expint/check_value_neg.cc: + Likewise. + * testsuite/tr1/5_numerical_facilities/special_functions/16_hermite/check_value.cc: + Likewise. + * testsuite/tr1/5_numerical_facilities/special_functions/17_hyperg/check_value.cc: + Likewise. + * testsuite/tr1/5_numerical_facilities/special_functions/18_laguerre/check_value.cc: + Likewise. + * testsuite/tr1/5_numerical_facilities/special_functions/19_legendre/check_value.cc: + Likewise. + * testsuite/tr1/5_numerical_facilities/special_functions/20_riemann_zeta/check_value_neg.cc: + Likewise. + * testsuite/tr1/5_numerical_facilities/special_functions/21_sph_bessel/check_value.cc: + Likewise. + * testsuite/tr1/5_numerical_facilities/special_functions/22_sph_legendre/check_value.cc: + Likewise. + * testsuite/tr1/5_numerical_facilities/special_functions/22_sph_legendre/pr86655.cc: + Likewise. + * testsuite/tr1/5_numerical_facilities/special_functions/23_sph_neumann/check_value.cc: + Likewise. + +2025-06-11 Jonathan Wakely <jwakely@redhat.com> + + * include/std/sstream: Adjust whitespace. + +2025-06-11 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/120390 + * include/bits/stl_construct.h (_Destroy_aux::__destroy_n): New + static member function. + (_Destroy_aux<true>::__destroy_n): Likewise. + (_Destroy_n_aux): Remove. + (_Destroy(ForwardIterator, ForwardIterator)): Remove + static_assert. Use is_trivially_destructible instead of + __has_trivial_destructor. + (_Destroy_n): Likewise. Use _Destroy_aux::__destroy_n instead of + _Destroy_n_aux::__destroy_n. + * testsuite/20_util/specialized_algorithms/memory_management_tools/destroy_neg.cc: + Adjust dg-error strings. Move destroy_n tests to ... + * testsuite/20_util/specialized_algorithms/memory_management_tools/destroy_n_neg.cc: + New test. + * testsuite/23_containers/vector/cons/destructible_debug_neg.cc: + Adjust dg-error strings. + * testsuite/23_containers/vector/cons/destructible_neg.cc: + Likewise. + +2025-06-11 Jonathan Wakely <jwakely@redhat.com> + + * testsuite/27_io/basic_istringstream/cons/char/string_view.cc: + Only check get_allocator() for new string ABI. + * testsuite/27_io/basic_ostringstream/cons/char/string_view.cc: + Likewise. + * testsuite/27_io/basic_stringbuf/cons/char/string_view.cc: + Likewise. + * testsuite/27_io/basic_stringstream/cons/char/string_view.cc: + Likewise. + +2025-06-10 Patrick Palka <ppalka@redhat.com> + + * include/bits/max_size_type.h (__max_size_type::_M_val): Make + public instead of private. + (__max_size_type::_M_msb): Likewise. + (__max_diff_type::_M_rep): Likewise. + * testsuite/std/ranges/iota/max_size_type.cc: Verify + __max_diff_type and __max_size_type are structural. + +2025-06-10 Yihan Wang <yronglin777@gmail.com> + Jonathan Wakely <jwakely@redhat.com> + + * include/std/tuple (__can_make_from_tuple): New variable + template. + (__make_from_tuple_impl): Add static_assert. + (make_from_tuple): Constrain using __can_make_from_tuple. + * testsuite/20_util/tuple/dr3528.cc: New test. + +2025-06-09 Nathan Myers <ncm@cantrip.org> + + PR libstdc++/119741 + * include/std/sstream: full implementation, really just + decls, requires clause and plumbing. + * include/bits/version.def, include/bits/version.h: + new preprocessor symbol + __cpp_lib_sstream_from_string_view. + * testsuite/27_io/basic_stringbuf/cons/char/string_view.cc: + New tests. + * testsuite/27_io/basic_istringstream/cons/char/string_view.cc: + New tests. + * testsuite/27_io/basic_ostringstream/cons/char/string_view.cc: + New tests. + * testsuite/27_io/basic_stringstream/cons/char/string_view.cc: + New tests. + * testsuite/27_io/basic_stringbuf/cons/wchar_t/string_view.cc: + New tests. + * testsuite/27_io/basic_istringstream/cons/wchar_t/string_view.cc: + New tests. + * testsuite/27_io/basic_ostringstream/cons/wchar_t/string_view.cc: + New tests. + * testsuite/27_io/basic_stringstream/cons/wchar_t/string_view.cc: + New tests. + +2025-06-08 John David Anglin <danglin@gcc.gnu.org> + + * config/abi/post/hppa-linux-gnu/baseline_symbols.txt: Update. + +2025-06-06 Jonathan Wakely <jwakely@redhat.com> + + * testsuite/30_threads/semaphore/1.cc: Check type properties and + max() values. + * testsuite/30_threads/semaphore/3.cc: New test. + * testsuite/30_threads/semaphore/cons_neg.cc: New test. + +2025-06-06 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/semaphore_base.h (_Select_semaphore_impl): Rename + to _Semaphore_impl and use std::conditional_t instead of an + immediately invoked lambda expression. + * include/std/semaphore (counting_semaphore): Adjust to use new + name. + +2025-06-06 Jonathan Wakely <jwakely@redhat.com> + + * testsuite/30_threads/barrier/1.cc: Require hosted. Only + require gthreads for non-linux targets. + * testsuite/30_threads/barrier/2.cc: Likewise. + * testsuite/30_threads/semaphore/1.cc: Likewise. + * testsuite/30_threads/semaphore/2.cc: Likewise. + * testsuite/30_threads/semaphore/cons.cc: Likewise. + * testsuite/30_threads/semaphore/least_max_value_neg.cc: + Likewise. + * testsuite/30_threads/semaphore/try_acquire.cc: Likewise. + +2025-06-06 Patrick Palka <ppalka@redhat.com> + + PR libstdc++/120432 + * include/std/flat_map (flat_map::operator[]): Make the + non-template overloads call try_emplace directly. Remove + non-standard same_as constraint on the template overload. + * testsuite/23_containers/flat_map/1.cc (test08): New test. + +2025-06-06 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/atomic_timed_wait.h (__atomic_wait_address_until_v): + Add assertion to prevent use with proxy waits. + (__atomic_wait_address_for_v): Likewise. + * include/bits/atomic_wait.h (__atomic_wait_address_v): + Likewise. + +2025-06-06 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/atomic_wait.h (__atomic_wait_address_v): Add bare + wait flag. + * include/bits/semaphore_base.h (__semaphore_base): Rename to + __semaphore_impl. Replace local variable and predicate lambdas + with _Available struct. + (__platform_semaphore_impl): New class template. + (__semaphore_impl): Remove alias template. + (_Select_semaphore_impl): New alias template. + * include/std/semaphore (counting_semaphore): Use + _Select_semaphore_impl. + +2025-06-06 Tomasz Kamiński <tkaminsk@redhat.com> + + PR libstdc++/120565 + * include/bits/chrono_io.h + (operator<<(basic_ostream<_CharT, _Traits>&, const sys_info&)) + (operator<<(basic_ostream<_CharT, _Traits>&, const local_info&)): + Support wchar_t as _CharT. + * testsuite/std/time/format/empty_spec.cc: Instantiated test_infos for + wchar_t and increase timeout. + +2025-06-06 Tomasz Kamiński <tkaminsk@redhat.com> + + * testsuite/std/time/format/empty_spec.cc: New tests and increased + timeout. + +2025-06-05 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/120548 + * include/std/format (__formatter_fp::_M_localize): Do not + include a leading sign character in the string to be grouped. + * testsuite/std/format/functions/format.cc: Check grouping when + sign is present in the output. + +2025-06-05 Tomasz Kamiński <tkaminsk@redhat.com> + + PR libstdc++/119152 + * src/c++23/std.cc.in (std::indirect, pmr::indirect) + [__cpp_lib_indirect] + (std::polymorphic, pmr::polymorphic) [__cpp_lib_polymorphic]: Export. + +2025-06-05 Tomasz Kamiński <tkaminsk@redhat.com> + + PR libstdc++/120481 + * include/bits/chrono_io.h (__format::_S_chars): Reorder so it + contains "-{}". + (__format::_S_colon, __format::_S_slash, __format::_S_space) + (__format::_S_plus_minus): Updated starting indicies. + (__format::_S_minus_empty_spec): Define. + (__formatter_chrono::_M_C_y_Y, __formatter_chrono::_M_R_T): + Rework implementation. + (__formatter_chrono::_M_d_e, __formatter_chrono::_M_F) + (__formatter_chrono::_M_m, __formatter_chrono::_M_u_w) + (__formatter_chrono::_M_H_I, __formatter_chrono::_M_p): + Handle multi digits values. + (__formatter_chrono::_S_digit): Return string view. + (__formatter_chrono::_S_str_d1, __formatter_chrono::_S_str_d2) + (__formatter_chrono::_S_fill_two_digits): Define. + * testsuite/std/time/format/empty_spec.cc: Update test for + year_month_day, that uses '%F'. + * testsuite/std/time/format/pr120481.cc: New test. + +2025-06-05 Nathan Myers <ncm@cantrip.org> + + Revert: + 2025-06-04 Nathan Myers <ncm@cantrip.org> + + PR libstdc++/119741 + * include/std/sstream: full implementation, really just + decls, requires clause and plumbing. + * include/bits/version.def, include/bits/version.h: + new preprocessor symbol + __cpp_lib_sstream_from_string_view. + * testsuite/27_io/basic_stringbuf/cons/char/string_view.cc: + New tests. + * testsuite/27_io/basic_istringstream/cons/char/string_view.cc: + New tests. + * testsuite/27_io/basic_ostringstream/cons/char/string_view.cc: + New tests. + * testsuite/27_io/basic_stringstream/cons/char/string_view.cc: + New tests. + * testsuite/27_io/basic_stringbuf/cons/wchar_t/string_view.cc: + New tests. + * testsuite/27_io/basic_istringstream/cons/wchar_t/string_view.cc: + New tests. + * testsuite/27_io/basic_ostringstream/cons/wchar_t/string_view.cc: + New tests. + * testsuite/27_io/basic_stringstream/cons/wchar_t/string_view.cc: + New tests. + +2025-06-04 Jonathan Wakely <jwakely@redhat.com> + + * testsuite/std/time/format/empty_spec.cc: Only test time zones + for cxx11 string ABI. + +2025-06-04 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/99832 + * include/bits/chrono.h (system_clock::to_time_t): Add + always_inline attribute to be agnostic to the underlying type of + time_t. + (system_clock::from_time_t): Add always_inline for consistency + with to_time_t. + * testsuite/20_util/system_clock/99832.cc: New test. + +2025-06-04 Nathan Myers <ncm@cantrip.org> + + PR libstdc++/119741 + * include/std/sstream: full implementation, really just + decls, requires clause and plumbing. + * include/bits/version.def, include/bits/version.h: + new preprocessor symbol + __cpp_lib_sstream_from_string_view. + * testsuite/27_io/basic_stringbuf/cons/char/string_view.cc: + New tests. + * testsuite/27_io/basic_istringstream/cons/char/string_view.cc: + New tests. + * testsuite/27_io/basic_ostringstream/cons/char/string_view.cc: + New tests. + * testsuite/27_io/basic_stringstream/cons/char/string_view.cc: + New tests. + * testsuite/27_io/basic_stringbuf/cons/wchar_t/string_view.cc: + New tests. + * testsuite/27_io/basic_istringstream/cons/wchar_t/string_view.cc: + New tests. + * testsuite/27_io/basic_ostringstream/cons/wchar_t/string_view.cc: + New tests. + * testsuite/27_io/basic_stringstream/cons/wchar_t/string_view.cc: + New tests. + +2025-06-04 Patrick Palka <ppalka@redhat.com> + + * include/bits/c++config (_GLIBCXX_AUTO_CAST): Define. + * include/bits/iterator_concepts.h (_Decay_copy, __decay_copy): + Remove. + (__member_begin, __adl_begin): Use _GLIBCXX_AUTO_CAST instead of + __decay_copy as per P0849R8. + * include/bits/ranges_base.h (_Begin): Likewise. + (__member_end, __adl_end, _End): Likewise. + (__member_rbegin, __adl_rbegin, _RBegin): Likewise. + (__member_rend, __adl_rend, _Rend): Likewise. + (__member_size, __adl_size, _Size): Likewise. + (_Data): Likewise. + +2025-06-04 Tomasz Kamiński <tkaminsk@redhat.com> + + * testsuite/std/time/format/empty_spec.cc: New tests. + +2025-06-04 Patrick Palka <ppalka@redhat.com> + + * include/bits/ranges_algo.h (__starts_with_fn, starts_with): + Define. + (__ends_with_fn, ends_with): Define. + * include/bits/version.def (ranges_starts_ends_with): Define. + * include/bits/version.h: Regenerate. + * include/std/algorithm: Provide __cpp_lib_ranges_starts_ends_with. + * src/c++23/std.cc.in (ranges::starts_with): Export. + (ranges::ends_with): Export. + * testsuite/25_algorithms/ends_with/1.cc: New test. + * testsuite/25_algorithms/starts_with/1.cc: New test. + +2025-06-04 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/semaphore_base.h (_S_get_current): Replace with + non-static _M_get_current. + (_S_do_try_acquire): Replace with non-static _M_do_try_acquire. + +2025-06-04 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/104928 + * include/bits/semaphore_base.h (_S_do_try_acquire): Take old + value by reference. + (_M_acquire): Move _S_do_try_acquire call out of the predicate + and loop on its result. Make the predicate capture and update + the local copy of the value. + (_M_try_acquire_until, _M_try_acquire_for): Likewise. + (_M_try_acquire): Just call _M_try_acquire_for. + * testsuite/30_threads/semaphore/104928-2.cc: New test. + * testsuite/30_threads/semaphore/104928.cc: New test. + +2025-06-04 Tomasz Kamiński <tkaminsk@redhat.com> + + * include/bits/chrono_io.h (__formatter_chrono:_M_s): Add missing + __out argument to format_to call. + * testsuite/std/time/format/empty_spec.cc: New test. + +2025-06-03 Jonathan Wakely <jwakely@redhat.com> + + * include/std/stop_token: Check __glibcxx_jthread instead of + __cplusplus. + +2025-06-03 Jonathan Wakely <jwakely@redhat.com> + + * include/std/type_traits (is_destructible, is_destructible_v): + Define using new built-in. + (is_nothrow_destructible, is_nothrow_destructible_v): Likewise. + (is_trivially_destructible, is_trivially_destructible_v): + Likewise. + +2025-06-03 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/atomic_timed_wait.h (__detail::__wait_until): + Remove incorrect comment. + (__atomic_wait_address_until_v): Do not take address of __args in + call to __detail::__wait_until. Fix return statement to refer to + member of __wait_result_type. + (__atomic_wait_address_for_v): Change parameter type from + time_point to duration. + * src/c++20/atomic.cc (__spin_until_impl): Fix incorrect + return value. Reuse result of first call to clock. + +2025-06-03 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/stl_vector.h (~_Vector_base): Add unreachable + hint for negative capacity and cast to size_t explicitly. + * include/bits/vector.tcc (vector::_M_realloc_append): Use + size() instead of end() - begin(). + +2025-06-03 Jonathan Wakely <jwakely@redhat.com> + + * include/std/bit (__rotl, __rotr): Use static_cast for + conversion from int to unsigned. + +2025-06-03 Jonathan Wakely <jwakely@redhat.com> + + * src/c++23/std.cc.in: Remove redundant checks for feature test + macros that are always true. + +2025-06-02 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/basic_string.h (basic_string::size): Remove space + before parameter list. + (basic_string::capacity): Likewise. + * include/bits/stl_deque.h (deque::size): Likewise. + * include/bits/stl_vector.h (vector::size, vector::capacity): + Likewise. + * include/bits/vector.tcc (vector::_M_realloc_insert): Likewise. + (vector::_M_realloc_append): Likewise. + +2025-06-02 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/120386 + * include/bits/ranges_algo.h (__unique_copy_fn): Reorder + arguments for third case to match the first two cases. + * include/bits/stl_algo.h (__unique_copy): Replace three + overloads with two, depending only on the iterator category of + the input range. Dispatch to __unique_copy_1 for the + non-forward case. + (__unique_copy_1): New overloads for the case where the input + range uses non-forward iterators. + (unique_copy): Only pass the input range category to + __unique_copy. + * testsuite/25_algorithms/unique_copy/lwg2439.cc: New test. + +2025-06-02 Tomasz Kamiński <tkaminsk@redhat.com> + + * include/bits/funcwrap.h (__polyfunc::__pass_by_rref): Define. + (__polyfunc::__param_t): Update to use __pass_by_rref. + * include/bits/cpyfunc_impl.h:: Assert that are parameters type + are complete. + * include/bits/funcref_impl.h: Likewise. + * include/bits/mofunc_impl.h: Likewise. + * testsuite/20_util/copyable_function/call.cc: New test. + * testsuite/20_util/function_ref/call.cc: New test. + * testsuite/20_util/move_only_function/call.cc: New test. + * testsuite/20_util/copyable_function/conv.cc: New test. + * testsuite/20_util/function_ref/conv.cc: New test. + * testsuite/20_util/move_only_function/conv.cc: New test. + * testsuite/20_util/copyable_function/incomplete_neg.cc: New test. + * testsuite/20_util/function_ref/incomplete_neg.cc: New test. + * testsuite/20_util/move_only_function/incomplete_neg.cc: New test. + +2025-06-02 Jonathan Wakely <jwakely@redhat.com> + Tomasz Kamiński <tkaminsk@redhat.com> + + PR libstdc++/119152 + * include/bits/indirect.h (std::polymorphic, pmr::polymorphic) + [__glibcxx_polymorphic]: Define. + * include/bits/version.def (polymorphic): Define. + * include/bits/version.h: Regenerate. + * include/std/memory: Define __cpp_lib_polymorphic. + * testsuite/std/memory/polymorphic/copy.cc: New test. + * testsuite/std/memory/polymorphic/copy_alloc.cc: New test. + * testsuite/std/memory/polymorphic/ctor.cc: New test. + * testsuite/std/memory/polymorphic/ctor_poly.cc: New test. + * testsuite/std/memory/polymorphic/incomplete.cc: New test. + * testsuite/std/memory/polymorphic/invalid_neg.cc: New test. + * testsuite/std/memory/polymorphic/move.cc: New test. + * testsuite/std/memory/polymorphic/move_alloc.cc: New test. + +2025-05-30 Tomasz Kamiński <tkaminsk@redhat.com> + + * testsuite/std/time/format/empty_spec.cc: New test. + +2025-05-30 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/atomic_timed_wait.h: Use __wait_result_type. + * include/bits/atomic_wait.h (__wait_result_type): New struct. + (__wait_args::_M_prep_for_wait_on): Rename to _M_setup_wait, use + __wait_result_type. + (__atomic_wait_address): Adjust to call _M_setup_wait. + * src/c++20/atomic.cc (__spin_impl): Use __wait_result_type. + (__wait_impl): Likewise. + (__spin_until_impl): Likewise. + (__wait_until_impl): Likewise. + +2025-05-30 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/118494 + PR libstdc++/110854 + PR libstdc++/98749 + * acinclude.m4 (GLIBCXX_CHECK_GTHREADS): Remove checks for + sem_timedwait. Do not define _GLIBCXX_HAVE_POSIX_SEMAPHORE. + * config.h.in: Regenerate. + * configure: Regenerate. + * include/bits/semaphore_base.h (__platform_semaphore): Remove. + (__atomic_semaphore): Replace with __semaphore_base<bool> and + make type of _M_count depend on template parameter. Fix _S_max + constant to use correct type. + (__semaphore_base::_M_try_acquire): Qualify to avoid ADL. + (__semaphore_base::_M_release): Return old value. Remove FIXME + comment. + (__semaphore_impl): Replace typedef with alias template. + * include/bits/version.def (semaphore): Do not depend on + _GLIBCXX_HAVE_POSIX_SEMAPHORE. + * include/bits/version.h: Regenerate. + * include/std/semaphore (semaphore): Adjust type of _M_sem + member. Add constexpr to constructor. Add assertions to + (semaphore::semaphore(ptrdiff_t)): Add constexpr. Add assertion + for precondition. + (semaphore::release): Add assertion using value returned from + _M_release. + * testsuite/30_threads/semaphore/100806.cc: Increase template + argument for std::counting_semaphore, so constructor + precondition is met. + * testsuite/30_threads/semaphore/cons.cc: New test. + * testsuite/30_threads/semaphore/try_acquire_posix.cc: Remove. + * testsuite/30_threads/semaphore/platform_try_acquire_for.cc: + Removed. + +2025-05-30 Jonathan Wakely <jwakely@redhat.com> + + * include/std/barrier (__tree_barrier_base): New class. + (__tree_barrier): Move non-dependent code into + __tree_barrier_base and derive from it. + +2025-05-30 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/118395 + PR libstdc++/108974 + PR libstdc++/98749 + * include/std/barrier (__tree_barrier): Use default + member-initializers. Change _M_state member from + unique_ptr<__state_t[]> to atomic<__state_t*>. Add + no_unique_address attribute to _M_completion. + (__tree_barrier::_M_arrive): Load value from _M_state. + (__tree_barrier::_M_invoke_completion): New member function to + ensure a throwing completion function will terminate, as + proposed in LWG 3898. + (__tree_barrier::max): Reduce by one to avoid overflow. + (__tree_barrier::__tree_barrier): Add constexpr. Qualify call to + std::move. Remove mem-initializers made unnecessary by default + member-initializers. Add precondition check. Only allocate state + array if not constant evaluated. + (__tree_barrier::arrive): Add precondition check. Do deferred + initialization of _M_state if needed. + (barrier): Add static_assert, as proposed in LWG 3898. + (barrier::barrier): Add constexpr. + * testsuite/30_threads/barrier/cons.cc: New test. + * testsuite/30_threads/barrier/lwg3898.cc: New test. + +2025-05-30 Jonathan Wakely <jwakely@redhat.com> + + * include/std/latch (latch::arrive_and_wait): Optimise. + +2025-05-30 Jonathan Wakely <jwakely@redhat.com> + + * config/abi/pre/gnu.ver: Add new symbol version and exports. + * include/bits/atomic_timed_wait.h (__platform_wait_until): Move + to atomic.cc. + (__cond_wait_until, __spin_until_impl): Likewise. + (__wait_until_impl): Likewise. Change __wait_args_base parameter + to non-const reference and change third parameter to + __wait_clock_t::duration. + (__wait_until): Change __wait_args_base parameter to non-const + reference. Change Call time_since_epoch() to get duration from + time_point. + (__wait_for): Change __wait_args_base parameter to non-const + reference. + (__atomic_wait_address_until): Call _M_prep_for_wait_on on args. + (__atomic_wait_address_for): Likewise. + (__atomic_wait_address_until_v): Qualify call to avoid ADL. Do + not forward __vfn. + * include/bits/atomic_wait.h (__platform_wait_uses_type): Use + alignof(T) not alignof(T*). + (__futex_wait_flags, __platform_wait, __platform_notify) + (__waitable_state, __spin_impl, __notify_impl): Move to + atomic.cc. + (__wait_impl): Likewise. Change __wait_args_base parameter to + non-const reference. + (__wait_args_base::_M_wait_state): New data member. + (__wait_args_base::_M_prep_for_wait_on): New member function. + (__wait_args_base::_M_load_proxy_wait_val): New member + function. + (__wait_args_base::_S_memory_order_for): Remove member function. + (__atomic_wait_address): Call _M_prep_for_wait_on on args. + (__atomic_wait_address_v): Qualify call to avoid ADL. + * src/c++20/Makefile.am: Add new file. + * src/c++20/Makefile.in: Regenerate. + * src/c++20/atomic.cc: New file. + * testsuite/17_intro/headers/c++1998/49745.cc: Remove XFAIL for + C++20 and later. + * testsuite/29_atomics/atomic/wait_notify/100334.cc: Remove use + of internal implementation details. + * testsuite/util/testsuite_abi.cc: Add GLIBCXX_3.4.35 version. + +2025-05-30 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/atomic_timed_wait.h (__wait_until_impl): Adjust + to use new naming. + * include/bits/atomic_wait.h (__waiter_pool_impl): Rename to + __waitable_state. + (__waiter_pool_impl::_S_wait): Rename to _M_waiters. + (__waiter_pool_impl::_S_impl_for): Rename to _S_state_for. + (__waiter_pool_impl::_S_track): Adjust to use new naming. + (__wait_impl, __notify_impl): Likewise. + * testsuite/29_atomics/atomic/wait_notify/100334.cc: Adjust to + use new naming. + +2025-05-30 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/atomic_timed_wait.h + (__atomic_wait_address_until_v): Replace __atomic_compare with + __atomic_eq. + (__atomic_wait_address_for_v): Likewise. + * include/bits/atomic_wait.h (__atomic_compare): Rename to + __atomic_eq. + (__atomic_wait_address_v): Replace __atomic_compare with + __atomic_eq. + +2025-05-30 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/atomic_timed_wait.h (__wait_until_impl): Change + first parameter to const void* and then static_cast to const + __platform_wait_t* when not using proxied wait. + (__wait_until): Change first parameter to const void*. + (__wait_for): Likewise. + (__atomic_wait_address_until): Remove reinterpret_cast and allow + address to implicitly convert to const void* instead. + (__atomic_wait_address_for): Likewise. + * include/bits/atomic_wait.h: (__wait_impl, __notify_impl): + Change first parameter to const void* and then static_cast to + const __platform_wait_t* when not using proxied wait. + (__atomic_wait_address, __atomic_notify_address) Remove + reinterpret_cast and allow address to implicitly convert to + const void* instead. + +2025-05-30 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/atomic_wait.h (__platform_wait): Change function + template to a normal function. The parameter is always + __platform_wait_t* which is just int* for this implementation of + the function. + (__platform_notify): Likewise. + +2025-05-30 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/atomic_timed_wait.h (__to_wait_clock): Do not use + chrono::ceil if clock and duration are already correct type. + (__wait_until): Always call __to_wait_clock. + +2025-05-30 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/atomic_wait.h (__notify_impl): Increment the + proxy value before returning early for the uncontended case. + +2025-05-30 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/atomic_timed_wait.h (__cond_wait_impl): Add + missing inline keyword. + (__spin_until_impl): Change parameter from pointer to reference. + Replace make_pair with list-initialization. Initialize variable + for return value. + (__wait_until_impl): Likewise. Remove some preprocessor + conditional logic. Use _S_track for contention tracking. + Avoid unnecessary const_cast. + (__wait_until): Change parameter from pointer to reference. + Replace make_pair with list-initialization. + (__wait_for): Change parameter from pointer to reference. Add + __do_spin flag to args. + * include/bits/atomic_wait.h (__waiter_pool_impl::_S_track): New + function returning an RAII object for contention tracking. + (__wait_flags): Do not set the __do_spin flag in the __spin_only + enumerator. Comment out the unused __abi_version_mask + enumerator. Define operator| and operator|= overloads. + (__wait_args_base::operator&): Define. + (__wait_args::operator&, __wait_args::_S_default_flags): Remove. + (__wait_args::operator|, __wait_args::operator|=): Remove. + (__spin_impl): Change parameter from pointer to reference. + Replace make_pair call with list-initialization. + (__wait_impl): Likewise. Remove some preprocessor conditional + logic. Always store old value in __args._M_old. Avoid + unnecessary const_cast. Use _S_track. + (__notify_impl): Change parameter to reference. Remove some + preprocessor conditional logic. + (__atomic_wait_address): Add comment. Update __args._M_old on + each iteration. + (__atomic_wait_address_v): Add comment. + * include/std/latch (latch::wait): Adjust predicates for new + logic. + * testsuite/29_atomics/atomic_integral/wait_notify.cc: Improve + test. + +2025-05-30 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/atomic_timed_wait.h: Whitespace fixes. + * include/bits/atomic_wait.h: Likewise. + +2025-05-30 Thomas Rodgers <trodgers@redhat.com> + + * include/bits/atomic_timed_wait.h (__spin_until_impl): Accept + __wait_args as const __wait_args_base*. + (__wait_until_impl): Likewise. + (__wait_until): Likewise. + (__wait_for): Likewise. + (__atomic_wait_address_until): Pass __wait_args by address. + (__atomic_wait_address_for): Likewise. + * include/bits/atomic_wait.h (__wait_args_base): New struct. + (__wait_args): Derive from __wait_args_base. + (__wait_args::__wait_args()): Adjust ctors to call call base ctor. + (__wait_args::__wait_args(const __wait_args_base&)): New ctor. + (__wait_args::operator|=): New method. + (__wait_args::_S_flags_for): Change return type to + __wait_flags. + (__spin_impl): Accept __wait_args as const __wait_args_base*. + (__wait_impl): Likewise. + (__notify_impl): Likewise. + (__atomic_wait_address): Pass __wait_args by address. + (__atomic_wait_address_v): Likewise. + (__atomic_notify_address): Likewise. + +2025-05-30 Thomas Rodgers <trodgers@redhat.com> + + * include/bits/atomic_timed_wait.h: + (__detail::__platform_wait_until_impl): Rename to + __platform_wait_until. + (__detail::__platform_wait_until): Remove previous + definition. + (__detail::__cond_wait_until_impl): Rename to + __cond_wait_until. + (__detail::__cond_wait_until): Remove previous + definition. + (__detail::__spin_until_impl): New function. + (__detail::__wait_until_impl): New function. + (__detail::__wait_until): New function. + (__detail::__wait_for): New function. + (__detail::__timed_waiter_pool): Remove type. + (__detail::__timed_backoff_spin_policy): Remove type. + (__detail::__timed_waiter): Remove type. + (__detail::__enters_timed_wait): Remove type alias. + (__detail::__bare_timed_wait): Remove type alias. + (__atomic_wait_address_until): Adjust to new implementation + detail. + (__atomic_wait_address_until_v): Likewise. + (__atomic_wait_address_bare): Remove. + (__atomic_wait_address_for): Adjust to new implementation + detail. + (__atomic_wait_address_for_v): Likewise. + (__atomic_wait_address_for_bare): Remove. + * include/bits/atomic_wait.h: Include bits/stl_pair.h. + (__detail::__default_spin_policy): Remove type. + (__detail::__atomic_spin): Remove function. + (__detail::__waiter_pool_base): Rename to __waiter_pool_impl. + Remove _M_notify. Rename _S_for to _S_impl_for. + (__detail::__waiter_base): Remove type. + (__detail::__waiter_pool): Remove type. + (__detail::__waiter): Remove type. + (__detail::__enters_wait): Remove type alias. + (__detail::__bare_wait): Remove type alias. + (__detail::__wait_flags): New enum. + (__detail::__wait_args): New struct. + (__detail::__wait_result_type): New type alias. + (__detail::__spin_impl): New function. + (__detail::__wait_impl): New function. + (__atomic_wait_address): Adjust to new implementation detail. + (__atomic_wait_address_v): Likewise. + (__atomic_notify_address): Likewise. + (__atomic_wait_address_bare): Delete. + (__atomic_notify_address_bare): Likewise. + * include/bits/semaphore_base.h: Adjust implementation to + use new __atomic_wait_address_v contract. + * include/std/barrier: Adjust implementation to use new + __atomic_wait contract. + * include/std/latch: Adjust implementation to use new + __atomic_wait contract. + * testsuite/29_atomics/atomic/wait_notify/100334.cc (main): + Adjust to for __detail::__waiter_pool_base renaming. + +2025-05-29 Patrick Palka <ppalka@redhat.com> + + * include/std/flat_map (_Flat_map_impl::operator==): Compare + keys and values separately. + +2025-05-29 Patrick Palka <ppalka@redhat.com> + Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/120465 + * include/std/flat_map (_Flat_map_impl::_M_erase_if): Use a + projection with ranges::remove_if to pass a pair instead of + a tuple to the predicate. + * testsuite/23_containers/flat_map/1.cc (test07): Strengthen + to expect the argument passed to the predicate is a pair. + * testsuite/23_containers/flat_multimap/1.cc (test07): Likewise. + +2025-05-29 Jonathan Wakely <jwakely@redhat.com> + + * testsuite/17_intro/names.cc [_AIX] (a): Undefine. + * testsuite/experimental/names.cc [_AIX] (ptr): Undefine. + +2025-05-29 Jonathan Wakely <jwakely@redhat.com> + + * testsuite/22_locale/num_put/put/char/lwg4084.cc [_AIX]: Adjust + expected output for NaN and infinity. + +2025-05-29 Jonathan Wakely <jwakely@redhat.com> + + * testsuite/23_containers/deque/capacity/shrink_to_fit.cc: + Remove dg-xfail-run-if for AIX. + * testsuite/23_containers/unordered_map/96088.cc: Replace + dg-xfail-run-if with dg-require-effective-target c++20. + * testsuite/23_containers/unordered_multimap/96088.cc: Likewise. + * testsuite/23_containers/unordered_multiset/96088.cc: Likewise. + * testsuite/23_containers/unordered_set/96088.cc: Likewise. + +2025-05-29 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/boost_concept_check.h: Disable -Wlong-long + warnings. + * testsuite/24_iterators/operations/prev_neg.cc: Adjust dg-error + line number. + +2025-05-29 Jonathan Wakely <jwakely@redhat.com> + + * doc/xml/manual/test.xml: Remove outdated documentation on + testing with -std options in --target_board. + * doc/html/manual/test.html: Regenerate. + +2025-05-27 Jonathan Wakely <jwakely@redhat.com> + + * testsuite/17_intro/names.cc [_AIX] (n): Undefine. + * testsuite/experimental/names.cc [_AIX] (ptr): Undefine. + +2025-05-27 Jonathan Wakely <jwakely@redhat.com> + + * testsuite/std/format/debug.cc: Disable for targets with 16-bit + wchar_t. + * testsuite/std/format/functions/format.cc: Use -DUNICODE for + targets with 32-bit wchar_t. + (test_unicode) [UNICODE]: Only run checks when UNICODE is + defined. + +2025-05-27 Jonathan Wakely <jwakely@redhat.com> + + * include/Makefile.in: Regenerate. + +2025-05-27 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/96710 + * include/bits/std_abs.h [__SIZEOF_INT128__] (abs(__int128)): + Define. + [_GLIBCXX_USE_FLOAT128] (abs(__float128)): Enable definition for + strict modes. + * testsuite/26_numerics/headers/cmath/82644.cc: Use strict_std + instead of defining __STRICT_ANSI__. + * testsuite/26_numerics/headers/cstdlib/abs128.cc: New test. + +2025-05-27 Luc Grosheintz <luc.grosheintz@gmail.com> + + * include/std/mdspan: Value initialize the array storing the + dynamic extents. + * testsuite/23_containers/mdspan/extents/ctor_default.cc: New + test. + +2025-05-26 Tomasz Kamiński <tkaminsk@redhat.com> + + PR libstdc++/119152 + * testsuite/std/memory/indirect/ctor.cc: Run test_inplace_ctor. + +2025-05-26 Jonathan Wakely <jwakely@redhat.com> + Tomasz Kamiński <tkaminsk@redhat.com> + + PR libstdc++/119152 + * doc/doxygen/stdheader.cc: Added indirect.h file. + * include/Makefile.am: Add new header. + * include/Makefile.in: Regenerate. + * include/bits/indirect.h: New file. + * include/bits/version.def (indirect): Define. + * include/bits/version.h: Regenerate. + * include/std/memory: Include new header. + * testsuite/std/memory/indirect/copy.cc + * testsuite/std/memory/indirect/copy_alloc.cc + * testsuite/std/memory/indirect/ctor.cc + * testsuite/std/memory/indirect/incomplete.cc + * testsuite/std/memory/indirect/invalid_neg.cc + * testsuite/std/memory/indirect/move.cc + * testsuite/std/memory/indirect/move_alloc.cc + * testsuite/std/memory/indirect/relops.cc + +2025-05-26 Tomasz Kamiński <tkaminsk@redhat.com> + + PR libstdc++/119126 + * doc/doxygen/stdheader.cc: Added funcref_impl.h file. + * include/Makefile.am: Added funcref_impl.h file. + * include/Makefile.in: Added funcref_impl.h file. + * include/bits/funcref_impl.h: New file. + * include/bits/funcwrap.h: (_Ptrs::_M_obj): Const-qualify. + (_Storage::_M_ptr, _Storage::_M_ref): Remove. + (__polyfunc::__cast_to) Define. + (_Base_invoker::_S_ptrs, _Base_invoker::_S_nttp) + (_Base_invoker::_S_bind_ptrs, _Base_invoker::_S_bind_ref) + (_Base_invoker::_S_call_ptrs): Define. + (_Base_invoker::_S_call_storage): Foward to _S_call_ptrs. + (_Manager::_S_local, _Manager::_S_ptr): Adjust for _M_obj being + const qualified. + (__polyfunc::_Manager, __polyfunc::_Mo_base): Guard with + __glibcxx_move_only_function || __glibcxx_copyable_function. + (__polyfunc::__skip_first_arg, __polyfunc::__deduce_funcref) + (std::function_ref) [__glibcxx_function_ref]: Define. + * include/bits/utility.h (std::nontype_t, std::nontype) + (__is_nontype_v) [__glibcxx_function_ref]: Define. + * include/bits/version.def: Define function_ref. + * include/bits/version.h: Regenerate. + * include/std/functional: Define __cpp_lib_function_ref. + * src/c++23/std.cc.in (std::nontype_t, std::nontype) + (std::function_ref) [__cpp_lib_function_ref]: Export. + * testsuite/20_util/function_ref/assign.cc: New test. + * testsuite/20_util/function_ref/call.cc: New test. + * testsuite/20_util/function_ref/cons.cc: New test. + * testsuite/20_util/function_ref/cons_neg.cc: New test. + * testsuite/20_util/function_ref/conv.cc: New test. + * testsuite/20_util/function_ref/deduction.cc: New test. + * testsuite/20_util/function_ref/mutation.cc: New test. + +2025-05-23 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/120384 + * include/bits/stl_algo.h (__unique_copy): Remove all + _BinaryPredicateConcept concept checks. + (unique_copy): Check _BinaryPredicateConcept in overload that + takes a predicate. + * testsuite/25_algorithms/unique_copy/120384.cc: New test. + +2025-05-23 Jonathan Wakely <jwakely@redhat.com> + + * include/std/type_traits (is_constant_evaluated): Add + always_inline attribute. + +2025-05-23 Jonathan Wakely <jwakely@redhat.com> + + * testsuite/17_intro/names.cc [__sun__] (a, i, n): Undefine. + +2025-05-23 Stefan Schulze Frielinghaus <stefansf@gcc.gnu.org> + + * testsuite/std/format/parse_ctx.cc: Fix typo for bfloat16 guard. + +2025-05-22 Jonathan Wakely <jwakely@redhat.com> + Tomasz Kamiński <tkaminsk@redhat.com> + + * include/bits/allocated_ptr.h (_Scoped_allocation): New class + template. + +2025-05-22 Jonathan Wakely <jwakely@redhat.com> + + * testsuite/util/pstl/test_utils.h (ForwardIterator::operator++): + Fix return type. + (BidirectionalIterator::operator++): Likewise. + (BidirectionalIterator::operator--): Likewise. + +2025-05-22 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/120367 + * include/bits/stl_vector.h (_M_range_initialize): Initialize + _M_impl._M_finish. + * testsuite/23_containers/vector/cons/from_range.cc: Check with + a type that throws on construction. + exceptions during construction. + +2025-05-21 Alexandre Oliva <oliva@adacore.com> + + * testsuite/21_strings/basic_string/numeric_conversions/char/stold.cc: + Guard non-wide stold calls with conditions for it to be + defined. + * testsuite/27_io/basic_ostream/inserters_arithmetic/char/hexfloat.cc: + Likewise. + +2025-05-21 Xℹ Ruoyao <xry111@mengyan1223.wang> + + PR libstdc++/81806 + * include/ext/pb_ds/detail/bin_search_tree_/split_join_fn_imps.hpp + (split_finish): Use maintained size, instead of calling + std::distance. + +2025-05-21 Xℹ Ruoyao <xry111@mengyan1223.wang> + + * include/ext/pb_ds/detail/rb_tree_map_/node.hpp + (rb_tree_node_::size_type): New typedef. + (rb_tree_node_::m_subtree_size): New field. + * include/ext/pb_ds/detail/splay_tree_/node.hpp + (splay_tree_node_::size_type): New typedef. + (splay_tree_node_::m_subtree_size): New field. + * include/ext/pb_ds/detail/bin_search_tree_/bin_search_tree_.hpp + (PB_DS_BIN_TREE_NAME::update_subtree_size): Declare new member + function. + * include/ext/pb_ds/detail/bin_search_tree_/rotate_fn_imps.hpp + (update_subtree_size): Define. + (apply_update, update_to_top): Call update_subtree_size. + +2025-05-21 Xℹ Ruoyao <xry111@mengyan1223.wang> + + * include/ext/pb_ds/detail/bin_search_tree_/insert_fn_imps.hpp + (insert_leaf_new, insert_imp_empty): remove redundant statements. + +2025-05-20 Tomasz Kamiński <tkaminsk@redhat.com> + + * include/bits/chrono_io.h (_ChronoSpec::_M_locale_specific): + Declare as bit fiekd in tail-padding.. + * include/bits/formatfwd.h (__format::_Align): Defined as enum + class and add using enum. + * include/std/format (__format::_Pres_type, __format::_Sign) + (__format::_WidthPrec, __format::_Arg_t): Defined as enum class + and add using enum. + (_Pres_type::_Pres_esc): Replace with _Pres_max. + (_Pres_type::_Pres_seq, _Pres_type::_Pres_str): Remove. + (__format::_Pres_type): Updated values of enumerators as described + above. + (__format::_Spec): Rearranged members to have 8 bits of tail-padding. + (_Spec::_M_debug): Defined. + (_Spec::_M_reserved): Extended to 8 bits and moved at the end. + (_Spec::_M_reserved2): Removed. + (_Spec::_M_parse_fill_and_align, _Spec::_M_parse_sign) + (__format::__write_padded_as_spec): Adjusted default value checks. + (__format::_Term_char): Add using enum and adjust enumertors. + (__Escapes::_S_term): Adjusted for _Term_char values. + (__format::__should_escape_ascii): Adjusted _Term_char uses. + (__format::__write_escaped): Adjusted for _Term_char. + (__formatter_str::parse): Set _Pres_s if specifed and _M_debug + instead of _Pres_esc. + (__formatter_str::set_debug_format): Set _M_debug instead of + _Pres_esc. + (__formatter_str::format, __formatter_str::_M_format_range): + Check _M_debug instead of _Prec_esc. + (__formatter_str::_M_format_escaped): Adjusted _Term_char uses. + (__formatter_int::__formatter_int(_Spec<_CharT>)): Set _Pres_d if + default presentation type is not set. + (__formatter_int::_M_parse): Adjusted default value checks. + (__formatter_int::_M_do_parse): Set _M_debug instead of _Pres_esc. + (__formatter_int::_M_format_character): Handle escaped presentation. + (__formatter_int::_M_format_character_escaped) + (__formatter_int::_S_character_width): Merged into + _M_format_character. + (__formatter_ptr::__formatter_ptr(_Spec<_CharT>)): Set _Pres_p if + default presentation type is not set. + (__formatter_ptr::parse): Add default __type parameter, store _Pres_p, + and handle _M_alt to be consistent with meaning for integers. + (__foramtter_ptr<_CharT>::_M_set_default): Define. + (__format::__pack_arg_types, std::basic_format_args): Add necessary + casts. + (formatter<_CharT, _CharT>::set_debug_format) + (formatter<char, wchar_t>::set_debug_format): Set _M_debug instead of + _Pres_esc. + (formatter<_CharT, _CharT>::format, formatter<char, wchar_t>::format): + Simplify calls to _M_format_character. + (range_formatter<_Rg, _CharT>::parse): Replace _Pres_str with + _Pres_s and set _M_debug instead of _Pres_esc. + (range_formatter<_Rg, _CharT>::format): Replace _Pres_str with + _Pres_s. + +2025-05-20 Jonathan Wakely <jwakely@redhat.com> + + * doc/xml/faq.xml: Update URL for archived SGI STL docs. + * doc/xml/manual/containers.xml: Likewise. + * doc/xml/manual/extensions.xml: Likewise. + * doc/xml/manual/using.xml: Likewise. + * doc/xml/manual/utilities.xml: Likewise. + * doc/html/*: Regenerate. + +2025-05-19 Jonathan Wakely <jwakely@redhat.com> + + * include/std/ranges (_ZipTransform::operator()): Remove name of + unused parameter. + (chunk_view::_Iterator, stride_view::_Iterator): Likewise. + (join_with_view): Declare _Iterator and _Sentinel as class + instead of struct. + (repeat_view): Declare _Iterator as class instead of struct. + +2025-05-19 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/120293 + * include/bits/chrono_io.h (_M_format_to_ostream): Add special + case for local_time convertible to local_days. + * testsuite/std/time/clock/local/io.cc: Check formatting of + chrono::local_days. + +2025-05-16 Patrick Palka <ppalka@redhat.com> + + * include/std/type_traits (__is_invocable): Define in terms of + corresponding builtin if available. + (__is_nothrow_invocable): Likewise. + (is_invocable_v): Likewise. + (is_nothrow_invocable_v): Likewise. + +2025-05-16 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/65909 + * testsuite/lib/libstdc++.exp (check_v3_target_namedlocale): + Change name of formal argument to locale. + +2025-05-15 Luc Grosheintz <luc.grosheintz@gmail.com> + + * include/std/mdspan: Implement the mandate for extents as + signed or unsigned integer and not any interal type. Remove + leading underscores from names in static_assert message. + * testsuite/23_containers/mdspan/extents/class_mandates_neg.cc: + Check that extents<char,...> and extents<bool,...> are invalid. + Adjust dg-prune-output pattern. + * testsuite/23_containers/mdspan/extents/misc.cc: Update + tests to avoid `char` and `bool` as IndexType. + +2025-05-15 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/120190 + * include/std/format (format_kind): Adjust primary template to + not depend on itself. + * testsuite/std/format/ranges/format_kind_neg.cc: Adjust + expected errors. Check more invalid specializations. + +2025-05-15 Jonathan Wakely <jwakely@redhat.com> + + * include/std/complex (arg(T)): Use __builtin_signbit instead of + std::signbit. + +2025-05-15 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/120235 + * doc/html/*: Regenerate. + * doc/xml/manual/evolution.xml: Document deprecation. + * include/std/complex: Replace references to TR1 subclauses with + corresponding C++11 subclauses. + (fabs): Add deprecated attribute. + * testsuite/26_numerics/complex/fabs_neg.cc: New test. + +2025-05-15 Jason Merrill <jason@redhat.com> + + * testsuite/lib/libstdc++.exp: Add -Wabi. + +2025-05-15 Tomasz Kamiński <tkaminsk@redhat.com> + + PR libstdc++/119246 + * include/std/format: Updated check for _GLIBCXX_FORMAT_F128. + +2025-05-14 Tomasz Kamiński <tkaminsk@redhat.com> + + PR libstdc++/119125 + * include/bits/move_only_function.h: Move to... + * include/bits/funcwrap.h: ...here. + * doc/doxygen/stdheader.cc (init_map): Replaced move_only_function.h + with funcwrap.h, and changed include guard to use feature test macro. + Move bits/version.h include before others. + * include/Makefile.am: Likewise. + * include/Makefile.in: Likewise. + * include/std/functional: Likewise. + +2025-05-14 Tomasz Kamiński <tkaminsk@redhat.com> + + PR libstdc++/119125 + * doc/doxygen/stdheader.cc: Addded cpyfunc_impl.h header. + * include/Makefile.am: Add bits cpyfunc_impl.h. + * include/Makefile.in: Add bits cpyfunc_impl.h. + * include/bits/cpyfunc_impl.h: New file. + * include/bits/mofunc_impl.h: Mention LWG 4255. + * include/bits/move_only_function.h: Update header description + and change guard to also check __glibcxx_copyable_function. + (_Manager::_Func): Remove noexcept. + (std::__is_polymorphic_function_v<move_only_function<_Tp>>) + (__variant::_Never_valueless_alt<std::move_only_function<_Signature...>>) + (move_only_function) [__glibcxx_move_only_function]: Adjust guard. + (std::__is_polymorphic_function_v<copyable_function<_Tp>>) + (__variant::_Never_valueless_alt<std::copyable_function<_Signature...>>) + (__polyfunc::_Cpy_base, std::copyable_function) + [__glibcxx_copyable_function]: Define. + * include/bits/version.def: Define copyable_function. + * include/bits/version.h: Regenerate. + * include/std/functional: Define __cpp_lib_copyable_function. + * src/c++23/std.cc.in (copyable_function) + [__cpp_lib_copyable_function]: Export. + * testsuite/20_util/copyable_function/call.cc: New test based on + move_only_function tests. + * testsuite/20_util/copyable_function/cons.cc: New test based on + move_only_function tests. + * testsuite/20_util/copyable_function/conv.cc: New test based on + move_only_function tests. + * testsuite/20_util/copyable_function/copy.cc: New test. + * testsuite/20_util/copyable_function/move.cc: New test based on + move_only_function tests. + +2025-05-14 Tomasz Kamiński <tkaminsk@redhat.com> + + PR libstdc++/119125 + * include/bits/mofunc_impl.h: (std::move_only_function): Adjusted for + changes in bits/move_only_function.h + (move_only_function::move_only_function(_Fn&&)): Special case + move_only_functions with same invoker. + (move_only_function::operator=(move_only_function&&)): Handle self + assigment. + * include/bits/move_only_function.h (__polyfunc::_Ptrs) + (__polyfunc::_Storage): Refactored from _Mo_func::_Storage. + (__polyfunc::__param_t): Moved from move_only_function::__param_t. + (__polyfunc::_Base_invoker, __polyfunc::_Invoke): Refactored from + move_only_function::_S_invoke. + (__polyfunc::_Manager): Refactored from _Mo_func::_S_manager. + (std::_Mofunc_base): Moved into __polyfunc::_Mo_base with parts + extracted to __polyfunc::_Storage and __polyfunc::_Manager. + (__polyfunc::__deref_as, __polyfunc::__invoker_of) + (__polyfunc::__base_of, __polyfunc::__is_invoker_convertible): Define. + (std::__is_move_only_function_v): Renamed to + __is_polymorphic_function_v. + (std::__is_polymorphic_function_v): Renamed from + __is_move_only_function_v. + * testsuite/20_util/move_only_function/call.cc: Test for + functions pointers. + * testsuite/20_util/move_only_function/conv.cc: New test. + * testsuite/20_util/move_only_function/move.cc: Tests for + self assigment. + +2025-05-14 Tomasz Kamiński <tkaminsk@redhat.com> + + PR libstdc++/119246 + * include/std/format (__format::__bflt16_t): Define. + (_GLIBCXX_FORMAT_F128): Separate value for cases where _Float128 + is used. + (__format::__float128_t): Renamed to __format::__flt128_t. + (std::formatter<_Float128, _CharT>): Define always if there is + formattable 128bit float. + (std::formatter<__float128, _CharT>): Define. + (_Arg_type::_Arg_f128): Rename to _Arg_float128 and adjust value. + (_Arg_type::_Arg_ibm128): Change value to _Arg_ldbl. + (_Arg_type::_Arg_ieee128): Define as alias to _Arg_float128. + (_Arg_value::_M_f128): Replaced with _M_ieee128 and _M_float128. + (_Arg_value::_M_ieee128, _Arg_value::_M_float128) + (_Arg_value::_M_bf16, _Arg_value::_M_f16, _Arg_value::_M_f32) + (_Arg_value::_M_f64): Define. + (_Arg_value::_S_get, basic_format_arg::_S_to_enum): Handle __bflt16, + _Float16, _Float32, _Float64, and __float128 types. + (basic_format_arg::_S_to_arg_type): Preserve _bflt16, _Float16, + _Float32, _Float64 and __float128 types. + (basic_format_arg::_M_visit): Handle _Arg_float128, _Arg_ieee128, + _Arg_b16, _Arg_f16, _Arg_f32, _Arg_f64. + * testsuite/std/format/arguments/args.cc: Updated to illustrate + that extended floating point types use handles now. Added test + for __float128. + * testsuite/std/format/parse_ctx.cc: Extended test to cover class + to check_dynamic_spec with floating point types and handles. + +2025-05-14 Ville Voutilainen <ville.voutilainen@gmail.com> + + * include/std/utility (to_underlying): Add the __always_inline__ attribute. + +2025-05-12 Thomas Schwinge <tschwinge@baylibre.com> + + PR target/119645 + * configure.host [GCN, nvptx] (atomicity_dir): Don't set. + +2025-05-12 Patrick Palka <ppalka@redhat.com> + + PR libstdc++/119714 + PR libstdc++/112490 + * include/std/expected (expected::operator==): Replace + non-dependent std::expected function parameter with a dependent + one of type expected<_Vp, _Er> where _Vp matches _Tp. + * testsuite/20_util/expected/119714.cc: New test. + +2025-05-12 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/120187 + * include/c_global/ciso646: Only give deprecated warning for + C++20 and later. + * include/c_global/ccomplex: Add @since to Doxygen comment. + * include/c_global/cstdalign: Likewise. + * include/c_global/cstdbool: Likewise. + * include/c_global/ctgmath: Likewise. + * testsuite/18_support/headers/ciso646/macros.cc: Remove + dg-warning for c++17_only effective target. + * testsuite/18_support/headers/ciso646/macros-2.cc: New test. + +2025-05-12 Jonathan Wakely <jwakely@redhat.com> + + * doc/xml/manual/status_cxx2023.xml: Update status of proposals + implemented after GCC 14.2 release. + * doc/html/manual/status.html: Regenerate. + +2025-05-12 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/120198 + * include/bits/version.def (scoped_lock): Do not depend on + gthreads or hosted. + * include/bits/version.h: Regenerate. + * include/std/mutex (scoped_lock): Update comment. + * testsuite/30_threads/scoped_lock/requirements/typedefs.cc: + Remove dg-require-gthreads and use custom lockable type instead + of std::mutex. Check that typedef is only present for a single + template argument. + +2025-05-12 Thomas Schwinge <tschwinge@baylibre.com> + + PR libstdc++/70560 + PR libstdc++/119667 + * acinclude.m4 (GLIBCXX_ENABLE_BACKTRACE): Use '__SIZE_TYPE__' + instead of 'size_t'. + * configure: Regenerate. + +2025-05-12 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/118260 + * python/hook.in: Suppress output from gdb.execute calls to + register skips. + +2025-05-12 Jonathan Wakely <jwakely@redhat.com> + + * doc/xml/manual/status_cxx2017.xml: Update status for + std::to_chars and std::from_chars. + * doc/html/manual/*: Regenerate. + +2025-05-12 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/65909 + * testsuite/lib/libstdc++.exp (check_v3_target_namedlocale): + Hardcode the locale name instead of passing it to the + executable. Do not hardcode buffer size for string. + +2025-05-10 Alexandre Oliva <oliva@adacore.com> + + * src/c++23/print.cc [__VXWORKS__]: Include ioLib.h. + +2025-05-09 Tomasz Kamiński <tkaminsk@redhat.com> + + * include/bits/chrono_io.h (__formatter_chrono::_M_format_to): + Extracted from _M_format. + (__formatter_chrono::_M_format): Use _Padding_sink and delegate + to _M_format_to. + +2025-05-09 Tomasz Kamiński <tkaminsk@redhat.com> + + * include/std/format (__Sink_iter<_CharT>::_M_discarding) + (__Sink<_CharT>::_M_discarding, _Iter_sink<_CharT, _OutIter>::_M_discarding) + (_Padding_sinl<_CharT, _Out>::_M_padwidth) + (_Padding_sink<_CharT, _Out>::_M_maxwidth): Remove const. + (_Padding_sink<_CharT, _Out>::_M_sync_discarding) + (_Padding_sink<_CharT, _Out>::_M_discarding): Define. + (_Padding_sink<_CharT, _Out>::_Padding_sink(_Out, size_t, size_t)) + (_Padding_sink<_CharT, _Out>::_M_force_update): + (_Padding_sink<_CharT, _Out>::_M_flush): Call _M_sync_discarding. + (_Padding_sink<_CharT, _Out>::_Padding_sink(_Out, size_t)): Delegate. + +2025-05-07 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/120159 + * src/c++23/std.cc.in (is_layout_compatible_v): Export. + +2025-05-07 Jonathan Wakely <jwakely@redhat.com> + + * src/c++23/std.cc.in: Fix export for std::extents. + +2025-05-07 Luc Grosheintz <luc.grosheintz@gmail.com> + + * testsuite/23_containers/mdspan/extents/class_mandates_neg.cc: New test. + * testsuite/23_containers/mdspan/extents/ctor_copy.cc: New test. + * testsuite/23_containers/mdspan/extents/ctor_ints.cc: New test. + * testsuite/23_containers/mdspan/extents/ctor_shape.cc: New test. + * testsuite/23_containers/mdspan/extents/custom_integer.cc: New test. + * testsuite/23_containers/mdspan/extents/misc.cc: New test. + +2025-05-07 Luc Grosheintz <luc.grosheintz@gmail.com> + + PR libstdc++/107761 + * include/std/mdspan (extents): New class. + * src/c++23/std.cc.in: Add 'using std::extents'. + +2025-05-07 Luc Grosheintz <luc.grosheintz@gmail.com> + + * doc/doxygen/user.cfg.in: Add <mdspan>. + * include/Makefile.am: Ditto. + * include/Makefile.in: Ditto. + * include/precompiled/stdc++.h: Ditto. + * include/std/mdspan: New file. + +2025-05-07 Luc Grosheintz <luc.grosheintz@gmail.com> + + * include/bits/version.def: Add internal feature testing macro + __glibcxx_mdspan. + * include/bits/version.h: Regenerate. + +2025-05-07 Tomasz Kamiński <tkaminsk@redhat.com> + + PR libstdc++/120114 + * include/bits/chrono_io.h (__formatter_chrono::_M_format): Use __field_width. + * testsuite/std/time/format/pr120114.cc: New test. + +2025-05-07 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/120147 + * acinclude.m4 (GLIBCXX_ENABLE_BACKTRACE): Restore use of + AC_LANG_CPLUSPLUS. + * configure: Regenerate. + +2025-05-06 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/70560 + PR libstdc++/119667 + * acinclude.m4 (GLIBCXX_ENABLE_ATOMIC_BUILTINS): Only check for + __atomic_fetch_add on _Atomic_word. Define new macro + _GLIBCXX_ATOMIC_WORD_BUILTINS and stop defining macro + _GLIBCXX_ATOMIC_BUILTINS. + (GLIBCXX_ENABLE_BACKTRACE): Check for __atomic_load_n and + __atomic_store_n on int, void* and size_t. + * config.h.in: Regenerate. + * configure: Regenerate. + * configure.host: Fix typo in comment. + * include/ext/atomicity.h (__exchange_and_add, __atomic_add): + Depend on _GLIBCXX_ATOMIC_WORD_BUILTINS macro instead of old + _GLIBCXX_ATOMIC_BUILTINS macro. + +2025-05-06 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/117905 + * include/pstl/glue_numeric_impl.h (reduce, transform_reduce) + (transform_reduce, inclusive_scan, transform_exclusive_scan) + (transform_inclusive_scan): Use std::move for __init parameter. + * include/pstl/numeric_impl.h (__brick_transform_reduce) + (__pattern_transform_reduce, __brick_transform_scan) + (__pattern_transform_scan): Likewise. + * include/std/numeric (inclusive_scan, transform_exclusive_scan): + Use std::move to create local copy of the first element. + * testsuite/26_numerics/pstl/numeric_ops/108236.cc: Move test + using move-only type to ... + * testsuite/26_numerics/pstl/numeric_ops/move_only.cc: New test. + +2025-05-06 Jonathan Wakely <jwakely@redhat.com> + + PR libstdc++/120029 + * src/c++17/fs_path.cc (path::operator+=(const path&)): Handle + parameters that alias the path or one of its components. + * testsuite/27_io/filesystem/path/concat/120029.cc: New test. + * testsuite/experimental/filesystem/path/concat/120029.cc: New + test. + +2025-05-06 Jonathan Wakely <jwakely@redhat.com> + + PR c++/120112 + * include/bits/ptr_traits.h (_Safe_iterator_base): Use class + keyword in class-head of declaration. + * include/debug/debug.h (_Safe_iterator): Likewise. + +2025-05-06 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/stl_iterator.h (counted_iterator): Add noexcept + to friend operators which only access the _M_length member. + +2025-05-02 Dhruv Chawla <dhruvc@nvidia.com> + + * include/std/memory: Define __glibcxx_want_addressof_constexpr. + * testsuite/20_util/headers/memory/version.cc: Test for macro + value. + +2025-05-02 Jonathan Wakely <jwakely@redhat.com> + + * testsuite/23_containers/vector/allocator/default_init.cc: + Add a check using constant evaluation. + * testsuite/23_containers/vector/bool/allocator/default_init.cc: + Likewise. + * testsuite/util/testsuite_allocator.h (default_init_allocator): + Make all member functions and equality ops constexpr. + +2025-05-02 Jonathan Wakely <jwakely@redhat.com> + + * src/c++11/Makefile.am: Simplify existing prerequisites for wchar and + dual-abi targets that are built from other sources. Add similar + prerequisites for more wchar and dual-abi files. + * src/c++11/Makefile.in: Regenerate. + * src/c++17/Makefile.am [ENABLE_DUAL_ABI]: Add prerequisites for + dual-abi targets that are built from other sources. + * src/c++17/Makefile.in: Regenerate. + +2025-04-30 François Dumont <frs.dumont@gmail.com> + Jonathan Wakely <jwakely@redhat.com> + + * testsuite/lib/libstdc++.exp (v3_target_compile): Strip version namespace + from compiler output. + * testsuite/20_util/aligned_storage/value.cc [_GLIBCXX_INLINE_VERSION]: + Avoid align_msa check. + * testsuite/20_util/function/cons/70692.cc: Remove now useless __8 namespace + pattern. + * testsuite/23_containers/map/48101_neg.cc: Likewise. + * testsuite/23_containers/multimap/48101_neg.cc: Likewise. + +2025-04-30 Tomasz Kamiński <tkaminsk@redhat.com> + + PR libstdc++/109162 + * include/std/format (_Padding_sink::_M_update): Fixed condition for + calling _M_force_update. + * testsuite/std/format/debug.cc: Add test that reproduces this issue + on 64bit architecture. + * testsuite/std/format/ranges/sequence.cc: Another edge value test. + +2025-04-29 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/version.def (make_obj_using_allocator): Use + no_stdname. + * include/bits/version.h: Regenerate. + +2025-04-29 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/regex_compiler.h: Replace _GLIBCXX17_CONSTEXPR + with constexpr and disable diagnostics with pragmas. + (_AnyMatcher::operator()): Use constexpr-if instead of tag + dispatching. Postpone calls to _M_translate until after checking + result of earlier calls. + (_AnyMatcher::_M_apply): Remove both overloads. + (_BracketMatcher::operator(), _BracketMatcher::_M_ready): + Replace tag dispatching with 'if constexpr'. + (_BracketMatcher::_M_apply(_CharT, true_type)): Remove. + (_BracketMatcher::_M_apply(_CharT, false_type)): Remove second + parameter. + (_BracketMatcher::_M_make_cache): Remove both overloads. + * include/bits/regex_compiler.tcc (_BracketMatcher::_M_apply): + Remove second parameter. + * include/bits/regex_executor.tcc: Replace _GLIBCXX17_CONSTEXPR + with constexpr and disable diagnostics with pragmas. + (_Executor::_M_handle_backref): Replace __glibcxx_assert with + static_assert. + (_Executor::_M_handle_accept): Mark _S_opcode_backref case as + unreachable for non-DFS mode and do not instantiate + _M_handle_backref for that case. + +2025-04-29 Barnabás Pőcze <pobrn@protonmail.com> + + PR libstdc++/112934 + * include/bits/stl_map.h (map::erase): Use _M_erase_unique. + * include/bits/stl_set.h (set::erase): Likewise. + * include/bits/stl_tree.h (_Rb_tree::_M_erase_unique): Add. + +2025-04-29 Patrick Palka <ppalka@redhat.com> + + PR libstdc++/119427 + * include/std/flat_map (_Flat_map_impl::erase_if): Replace + this hidden friend with ... + (_Flat_map_impl::_M_erase_if): ... this member function. + (flat_map): Export _Flat_map_impl::_M_erase_if. + (erase_if(flat_map)): Define. + (flat_multimap): Export _Flat_map_impl::_M_erase_if. + (erase_if(flat_multimap)): Define. + * include/std/flat_set (_Flat_set_impl::erase_if): Replace + with ... + (_Flat_set_impl::_M_erase_if): ... this member function. + (flat_set): Export _Flat_set_impl::_M_erase_if. + (erase_if(flat_set)): Define. + (flat_multiset): Export _Flat_set_impl::_M_erase_if. + (erase_if(flat_multiset)): Define. + * testsuite/23_containers/flat_map/1.cc (test07): New test. + * testsuite/23_containers/flat_multimap/1.cc (test07): New test. + * testsuite/23_containers/flat_multiset/1.cc (test09): New test. + * testsuite/23_containers/flat_set/1.cc (test09): New test. + +2025-04-29 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/char_traits.h (char_traits::assign): Use + constexpr-if unconditionally for C++11 and C++14. + * include/bits/locale_conv.h (__do_str_codecvt): Likewise. + * include/bits/ostream.h (basic_ostream::_S_cast_flt): Likewise. + * include/bits/random.tcc (shuffle_order_engine::operator()) + (seed_seq::seed_seq(Iter, Iter)): Likewise. + * include/bits/shared_ptr_base.h (_Sp_counted_base::_M_release): + Likewise. + * include/bits/stl_tree.h (_Rb_tree::_M_move_data): Likewise. + * include/bits/uniform_int_dist.h + (uniform_int_distribution::operator()): Likewise. + * include/bits/valarray_array.h (__valarray_default_construct) + (__valarray_fill_construct, __valarray_copy_construct) + (__valarray_copy_construct, __valarray_destroy_elements): + Likewise. + * include/experimental/numeric (lcm): Likewise. + * include/std/bit (__rotl, __rotr, __countl_zero, __countr_zero) + (__popcount, __bit_ceil) Likewise.: + * include/std/bitset (operator>>): Likewise. + * include/std/charconv (__to_chars_8, __to_chars_i) + (__from_chars_alnum_to_val, from_chars): Likewise. + * include/tr2/dynamic_bitset (__dynamic_bitset_base): Likewise. + * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error + line number. + +2025-04-29 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/std_function.h (_Target_handler): Remove. + (function::target): Use constexpr-if for C++11 and + C++14, with diagnostic pragmas to suppress warnings. + +2025-04-29 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/stl_vector.h (_S_do_relocate): Remove. + (_S_relocate): Remove tag dispatching path. + * include/bits/vector.tcc (reserve, _M_realloc_insert) + (_M_realloc_append, _M_default_append): Add diagnostic pragmas + and use 'if constexpr' in C++11 and C++14. Call + std::__relocate_a directly instead of _S_relocate. + +2025-04-29 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/basic_string.h (operator+(string&&, string&&)): + Do not assume that COW strings have equal allocators. Use + constexpr-if unconditionally. + * testsuite/21_strings/basic_string/allocator/char/operator_plus.cc: + Remove cxx11_abi effective-target check. + * testsuite/21_strings/basic_string/allocator/wchar_t/operator_plus.cc: + Likewise. + +2025-04-28 Giuseppe D'Angelo <giuseppe.dangelo@kdab.com> + + * testsuite/20_util/shared_ptr/requirements/1.cc: Test both + shared_ptr and weak_ptr. + Add more tests. + * testsuite/20_util/weak_ptr/requirements/1.cc: Removed as + superseded by the other test. + +2025-04-28 Tomasz Kamiński <tkaminsk@redhat.com> + + PR libstdc++/119970 + * include/std/ostream (vprint_unicode) [_WIN32 && !__CYGWIN__]: Call + _Str_sink::_M_span instead of view. + * include/std/print (vprint_unicode) [_WIN32 && !__CYGWIN__]: Call + _Str_sink::_M_span instead of view. + +2025-04-28 Tomasz Kamiński <tkaminsk@redhat.com> + + * include/bits/ranges_base.h (__detail::__range_key_type): + Replace remove_const_t with remove_cvref_t. + (__detail::__range_mapped_type): Apply remove_cvref_t. + * include/bits/stl_iterator.h: (__detail::__iter_key_t): + Replace remove_const_t with __remove_cvref_t. + (__detail::__iter_val_t): Apply __remove_cvref_t. + * testsuite/23_containers/flat_map/1.cc: New tests. + * testsuite/23_containers/flat_multimap/1.cc: New tests. + * testsuite/23_containers/map/cons/deduction.cc: New tests. + * testsuite/23_containers/map/cons/from_range.cc: New tests. + * testsuite/23_containers/multimap/cons/deduction.cc: New tests. + * testsuite/23_containers/multimap/cons/from_range.cc: New tests. + * testsuite/23_containers/unordered_map/cons/deduction.cc: New tests. + * testsuite/23_containers/unordered_map/cons/from_range.cc: New tests. + * testsuite/23_containers/unordered_multimap/cons/deduction.cc: + New tests. + * testsuite/23_containers/unordered_multimap/cons/from_range.cc: + New tests. + +2025-04-28 Tomasz Kamiński <tkaminsk@redhat.com> + + * include/bits/unordered_map.h (unordered_map): + Define constructors accepting: + (_InputIterator, _InputIterator, const allocator_type&), + (initializer_list<value_type>, const allocator_type&), + (unordered_multimap): Likewise. + * include/debug/unordered_map (unordered_map): Likewise. + (unordered_multimap): Likewise. + * include/bits/unordered_set.h (unordered_set): + Define constructors and deduction guide accepting: + (_InputIterator, _InputIterator, const allocator_type&), + (initializer_list<value_type>, const allocator_type&), + (unordered_multiset): Likewise. + * include/debug/unordered_set (unordered_set): Likewise. + (unordered_multiset): Likewise. + * testsuite/23_containers/unordered_map/cons/66055.cc: New tests. + * testsuite/23_containers/unordered_map/cons/deduction.cc: New tests. + * testsuite/23_containers/unordered_multimap/cons/66055.cc: New tests. + * testsuite/23_containers/unordered_multimap/cons/deduction.cc: New + tests. + * testsuite/23_containers/unordered_multiset/cons/66055.cc: New tests. + * testsuite/23_containers/unordered_multiset/cons/deduction.cc: New + tests. + * testsuite/23_containers/unordered_set/cons/66055.cc: New tests. + * testsuite/23_containers/unordered_set/cons/deduction.cc: New tests. + +2025-04-25 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/ptr_traits.h (to_address): Use markdown for + formatting in Doxygen comments. + +2025-04-25 Jonathan Wakely <jwakely@redhat.com> + + * src/c++11/Makefile.am: Add prerequisites for targets that + depend on string-inst.cc. + * src/c++11/Makefile.in: Regenerate. + +2025-04-25 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/move.h (addressof): Use __builtin_addressof + directly. + +2025-04-25 Jonathan Wakely <jwakely@redhat.com> + + * testsuite/tr1/2_general_utilities/shared_ptr/cons/43820_neg.cc: + Remove dg-error directives for additional c++26 errors. + +2025-04-25 Jonathan Wakely <jwakely@redhat.com> + + * include/std/latch (latch::_M_a): Rename to _M_counter. + +2025-04-25 Tomasz Kamiński <tkaminsk@redhat.com> + + PR libstdc++/109162 + * include/bits/formatfwd.h (__simply_formattable_range): Moved from + std/format. + * include/std/format (__formatter_str::_format): Extracted escaped + string handling to separate method... + (__formatter_str::_M_format_escaped): Use __Padding_sink. + (__formatter_str::_M_format): Adjusted implementation. + (__formatter_str::_S_trunc): Extracted as namespace function... + (__format::_truncate): Extracted from __formatter_str::_S_trunc. + (__format::_Seq_sink): Removed forward declarations, made members + protected and non-final. + (_Seq_sink::_M_trim): Define. + (_Seq_sink::_M_span): Renamed from view. + (_Seq_sink::view): Returns string_view instead of span. + (__format::_Str_sink): Moved after _Seq_sink. + (__format::__format_padded): Use _Padding_sink. + * testsuite/std/format/debug.cc: Add timeout and new tests. + * testsuite/std/format/ranges/sequence.cc: Specify unicode as + encoding and new tests. + * testsuite/std/format/ranges/string.cc: Likewise. + * testsuite/std/format/tuple.cc: Likewise. + +2025-04-25 Tomasz Kamiński <tkaminsk@redhat.com> + + * testsuite/std/format/ranges/adaptors.cc: Updated test. + +2025-04-25 Jonathan Wakely <jwakely@redhat.com> + + * testsuite/22_locale/ctype/is/string/89728_neg.cc: Remove + dg-error for c++98_only effective target. + +2025-04-25 Tomasz Kamiński <tkaminsk@redhat.com> + + PR libstdc++/119918 + * include/bits/formatfwd.h (__format::_Align): Moved from std/format. + (std::__throw_format_error, __format::__formatter_str) + (__format::__formatter_ptr): Declare. + * include/std/format (__format::_Align): Moved to bits/formatfwd.h. + (__formatter_int::__formatter_int): Define. + (__format::__formatter_ptr): Extracted from formatter for const void*. + (std::formatter<const void*, _CharT>, formatter<void*, _CharT>) + (std::formatter<nullptr_t, _CharT>): Delegate to __formatter_ptr<_CharT>. + * include/std/thread (std::formatter<thread::id, _CharT>): Constrain + _CharT template parameter. + (formatter<thread::id, _CharT>::parse): Specify default aligment, and + qualify __throw_format_error to disable ADL. + (formatter<thread::id, _CharT>::format): Use formatters to write directly + to output. + * testsuite/30_threads/thread/id/output.cc: Tests for formatting thread::id + representing not-a-thread with padding and formattable concept. + +2025-04-25 Tomasz Kamiński <tkaminsk@redhat.com> + + PR libstdc++/109162 + * include/bits/version.def (format_ranges): Remove no_stdname and + update value. + * include/bits/version.h: Regenerate. + * src/c++23/std.cc.in: Replace __glibcxx_format_ranges with + __cpp_lib_format_ranges. + * testsuite/std/format/formatter/lwg3944.cc: Likewise. + * testsuite/std/format/parse_ctx.cc: Likewise. + * testsuite/std/format/string.cc: Likewise. + * testsuite/std/format/ranges/feature_test.cc: New test. + +2025-04-25 Tomasz Kamiński <tkaminsk@redhat.com> + + PR libstdc++/109162 + * include/bits/formatfwd.h (__format::__parsable_with) + (__format::__formattable_with, __format::__formattable_impl) + (__format::__has_debug_format, __format::__const_formattable_range) + (__format::__maybe_const_range, __format::__maybe_const) + (std::formattable): Moved from std/format. + (__format::Iter_for, std::range_formatter): Forward declare. + * include/bits/stl_queue.h (std::formatter): Forward declare. + (std::queue, std::priority_queue): Befriend formatter specializations. + * include/bits/stl_stack.h (std::formatter): Forward declare. + (std::stack): Befriend formatter specializations. + * include/std/format (__format::_Iter_for): Define as struct with + (__format::__parsable_with, __format::__formattable_with) + (__format::__formattable_impl, __format::__has_debug_format) + (_format::__const_formattable_range, __format::__maybe_const_range) + (__format::__maybe_const, std::formattable): Moved to bits/formatfwd.h. + (std::range_formatter): Remove default argument specified in declaration + in bits/formatfwd.h. + * include/std/queue: Include bits/version.h before bits/stl_queue.h. + (formatter<queue<_Tp, _Container, _Compare>, _CharT>) + (formatter<priority_queue<_Tp, _Container, _Compare>, _CharT>): Define. + * include/std/stack: Include bits/version.h before bits/stl_stack.h + (formatter<stack<_Tp, _Container, _Compare>, _CharT>): Define. + * testsuite/std/format/ranges/adaptors.cc: New test. + +2025-04-25 Jonathan Wakely <jwakely@redhat.com> + + * include/std/future (__future_base::_Task_state): Check + invocable requirement here. + (__future_base::_Task_state::_S_create): New static member + function. + (__future_base::_Task_state::_M_reset): Use _S_create. + (__create_task_state): Remove. + (packaged_task): Use _Task_state::_S_create instead of + __create_task_state. + * testsuite/30_threads/packaged_task/cons/dangling_ref.cc: + Adjust dg-error patterns. + * testsuite/30_threads/packaged_task/cons/lwg4154_neg.cc: + Likewise. + +2025-04-25 Jonathan Wakely <jwakely@redhat.com> + + * include/bits/stl_tree.h (_Rb_tree::_M_key_compare): New member + function to invoke comparison function. + (_Rb_tree): Use new member function instead of accessing the + comparison function directly. + +2025-04-24 Jonathan Wakely <jwakely@redhat.com> + + * testsuite/23_containers/forward_list/48101_neg.cc: Remove + dg-prune-output that doesn't match anything. + * testsuite/23_containers/list/48101_neg.cc: Likewise. + * testsuite/23_containers/multiset/48101_neg.cc: Likewise. + * testsuite/23_containers/set/48101_neg.cc: Likewise. + +2025-04-24 Jonathan Wakely <jwakely@redhat.com> + + * include/std/generator (generator::yield_value): Add overload + taking lvalue element_of view, as per LWG 3899. + * testsuite/24_iterators/range_generators/lwg3899.cc: New test. + +2025-04-24 François Dumont <frs.dumont@gmail.com> + + * testsuite/util/replacement_memory_operators.h: Adapt for -fno-exceptions + context. + * testsuite/23_containers/deque/capacity/shrink_to_fit.cc: Adapt test + to check std::deque shrink_to_fit method. + +2025-04-23 Andreas Schwab <schwab@linux-m68k.org> + + * config/abi/post/powerpc-linux-gnu/baseline_symbols.txt: Update. + * config/abi/post/powerpc64-linux-gnu/32/baseline_symbols.txt: Update. + * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update. + +2025-04-23 ZENG Hao <c@cyano.cn> + + * src/c++23/std.cc.in (atomic_signed_lock_free): Guard with + preprocessor check for __cpp_lib_atomic_lock_free_type_aliases. + (atomic_unsigned_lock_free): Likewise. + 2025-04-22 Patrick Palka <ppalka@redhat.com> Revert: |