path: root/libstdc++-v3/ChangeLog

2024-02-02  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/113335
	* include/bits/std_function.h (__function_guide_helper): Add
	partial specialization for explicit object member functions, as
	per LWG 3617.
	* testsuite/20_util/function/cons/deduction_c++23.cc: Check
	explicit object member functions.
	* testsuite/30_threads/packaged_task/cons/deduction_c++23.cc:
	Likewise.

2024-02-02  Jonathan Wakely  <jwakely@redhat.com>

	* testsuite/17_intro/names.cc [_AIX]: Undefine "u".

2024-02-02  Jonathan Wakely  <jwakely@redhat.com>

	* include/experimental/internet (network_v6::network): Define.
	(network_v6::hosts): Finish implementing.
	(network_v6::to_string): Do not concatenate std::string to
	arbitrary std::basic_string specialization.
	* testsuite/experimental/net/internet/network/v6/cons.cc: New
	test.

2024-02-02  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/90276
	* testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: Fix
	comparison function to use less-than instead of equality.

2024-02-02  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/90276
	* testsuite/util/pstl/test_utils.h (reverse_invoker): Do not use
	perfect forwarding for iterator arguments.

2024-02-02  Jonathan Wakely  <jwakely@redhat.com>

	* include/std/string_view (basic_string_view(R&&)): Remove
	constraint that traits_type must be the same, as per LWG 3857.
	* testsuite/21_strings/basic_string_view/cons/char/range_c++20.cc:
	Explicit conversion between different specializations should be
	allowed.
	* testsuite/21_strings/basic_string_view/cons/wchar_t/range_c++20.cc:
	Likewise.

2024-02-02  Jonathan Wakely  <jwakely@redhat.com>

	* include/std/syncstream (basic_osyncstream::operator=): Remove
	noexcept, as per LWG 3867.

2024-02-02  Jonathan Wakely  <jwakely@redhat.com>

	* include/std/generator (promise_type::yield_value): Remove
	noexcept from fourth overload, as per LWG 3894.

2024-02-01  Patrick Palka  <ppalka@redhat.com>

	PR libstdc++/113309
	PR libstdc++/109203
	* include/bits/ranges_util.h (__detail::__pair_like): Don't
	define in C++23 mode.
	(__detail::__pair_like_convertible_from): Adjust as per P2165R4.
	(__detail::__is_subrange<subrange>): Moved from <ranges>.
	(__detail::__is_tuple_like_v<subrange>): Likewise.
	* include/bits/stl_iterator.h: Include <bits/utility.h> for
	C++23.
	(__different_from): Move to <concepts>.
	(__iter_key_t): Adjust for C++23 as per P2165R4.
	(__iter_val_t): Likewise.
	* include/bits/stl_pair.h (pair, array): Forward declare.
	(get): Forward declare all overloads relevant to P2165R4
	tuple-like constructors.
	(__is_tuple_v): Define for C++23.
	(__is_tuple_like_v): Define for C++23.
	(__tuple_like): Define for C++23 as per P2165R4.
	(__pair_like): Define for C++23 as per P2165R4.
	(__eligibile_tuple_like): Define for C++23.
	(__eligibile_pair_like): Define for C++23.
	(pair::_S_constructible_from_pair_like): Define for C++23.
	(pair::_S_convertible_from_pair_like): Define for C++23.
	(pair::_S_dangles_from_pair_like): Define for C++23.
	(pair::pair): Define overloads taking a tuple-like type for
	C++23 as per P2165R4.
	(pair::_S_assignable_from_tuple_like): Define for C++23.
	(pair::_S_const_assignable_from_tuple_like): Define for C++23.
	(pair::operator=): Define overloads taking a tuple-like type for
	C++23 as per P2165R4.
	* include/bits/utility.h (ranges::__detail::__is_subrange):
	Moved from <ranges>.
	* include/bits/version.def (tuple_like): Define for C++23.
	* include/bits/version.h: Regenerate.
	* include/std/concepts (__different_from): Moved from
	<bits/stl_iterator.h>.
	(ranges::__swap::__adl_swap): Clarify which __detail namespace.
	* include/std/map (__cpp_lib_tuple_like): Define C++23.
	* include/std/ranges (__detail::__is_subrange): Moved to
	<bits/utility.h>.
	(__detail::__is_subrange<subrange>): Moved to <bits/ranges_util.h>
	(__detail::__has_tuple_element): Adjust for C++23 as per P2165R4.
	(__detail::__tuple_or_pair): Remove as per P2165R4.  Replace all
	uses with plain tuple as per P2165R4.
	* include/std/tuple (__cpp_lib_tuple_like): Define for C++23.
	(__tuple_like_tag_t): Define for C++23.
	(__tuple_cmp): Forward declare for C++23.
	(_Tuple_impl::_Tuple_impl): Define overloads taking
	__tuple_like_tag_t and a tuple-like type for C++23.
	(_Tuple_impl::_M_assign): Likewise.
	(tuple::__constructible_from_tuple_like): Define for C++23.
	(tuple::__convertible_from_tuple_like): Define for C++23.
	(tuple::__dangles_from_tuple_like): Define for C++23.
	(tuple::tuple): Define overloads taking a tuple-like type for
	C++23 as per P2165R4.
	(tuple::__assignable_from_tuple_like): Define for C++23.
	(tuple::__const_assignable_from_tuple_like): Define for C++23.
	(tuple::operator=): Define overloads taking a tuple-like type
	for C++23 as per P2165R4.
	(tuple::__tuple_like_common_comparison_category): Define for C++23.
	(tuple::operator<=>): Define overload taking a tuple-like type
	for C++23 as per P2165R4.
	(array, get): Forward declarations moved to <bits/stl_pair.h>.
	(tuple_cat): Constrain with __tuple_like for C++23 as per P2165R4.
	(apply): Likewise.
	(make_from_tuple): Likewise.
	(__tuple_like_common_reference): Define for C++23.
	(basic_common_reference): Adjust as per P2165R4.
	(__tuple_like_common_type): Define for C++23.
	(common_type): Adjust as per P2165R4.
	* include/std/unordered_map (__cpp_lib_tuple_like): Define for
	C++23.
	* include/std/utility (__cpp_lib_tuple_like): Define for C++23.
	* testsuite/std/ranges/zip/1.cc (test01): Adjust to handle pair
	and 2-tuple interchangeably.
	(test05): New test.
	* testsuite/20_util/pair/p2165r4.cc: New test.
	* testsuite/20_util/tuple/p2165r4.cc: New test.

2024-02-01  Patrick Palka  <ppalka@redhat.com>

	* include/bits/stl_pair.h (pair::_S_const_assignable): Define,
	factored out from ...
	(pair::operator=): ... the constraints of the const overloads.

2024-02-01  Jonathan Wakely  <jwakely@redhat.com>

	* include/bits/version.tpl: Do not use def-file-line for each
	macro being defined.
	* include/bits/version.h: Regenerate.

2024-02-01  Jonathan Wakely  <jwakely@redhat.com>

	* testsuite/25_algorithms/copy/debug/constexpr_neg.cc: Adjust
	dg-error pattern.
	* testsuite/25_algorithms/copy_backward/debug/constexpr_neg.cc:
	Likewise.
	* testsuite/25_algorithms/equal/debug/constexpr_neg.cc:
	Likewise.
	* testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_neg.cc:
	Likewise.
	* testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_pred_neg.cc:
	Likewise.
	* testsuite/25_algorithms/lower_bound/debug/constexpr_valid_range_neg.cc:
	Likewise.
	* testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_neg.cc:
	Likewise.
	* testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_pred_neg.cc:
	Likewise.
	* testsuite/25_algorithms/upper_bound/debug/constexpr_valid_range_neg.cc:
	Likewise.

2024-02-01  Jonathan Wakely  <jwakely@redhat.com>

	* include/experimental/internet (network_v4::to_string()):
	Remove lambda and use of resize_and_overwrite.

2024-01-31  Jonathan Wakely  <jwakely@redhat.com>

	* acinclude.m4 (GLIBCXX_CHECK_TEXT_ENCODING): Use <xlocale.h> if
	needed for newlocale.
	* configure: Regenerate.
	* src/c++26/text_encoding.cc: Use <xlocale.h>.

2024-01-31  Jonathan Wakely  <jwakely@redhat.com>
	    Ewan Higgs  <ewan.higgs@gmail.com>

	* include/bits/text_encoding-data.h: Regenerate.
	* scripts/gen_text_encoding_data.py: Add extra_aliases dict
	containing "ASCII".
	* testsuite/std/text_encoding/cons.cc: Check "ascii" is known.

2024-01-31  Jonathan Wakely  <jwakely@redhat.com>

	* doc/xml/manual/using.xml: Update tables of supported headers.
	* doc/html/*: Regenerate.

2024-01-31  Jonathan Wakely  <jwakely@redhat.com>

	* include/std/bitset (_Base_bitset::_M_do_to_ullong): Avoid
	-Wshift-count-overflow warning.

2024-01-30  Jonathan Wakely  <jwakely@redhat.com>

	* testsuite/std/time/clock/gps/io.cc: Fix expected result in
	assertion and call test_format() from main.

2024-01-29  François Dumont  <fdumont@gcc.gnu.org>

	* doc/xml/manual/debug_mode.xml: Link against libstdc++exp.a to use
	_GLIBCXX_DEBUG_BACKTRACE macro.

2024-01-24  Huanghui Nie  <nnnjkk@gmail.com>
	    Théo Papadopoulo   <papadopoulo@gmail.com>

	* include/bits/hashtable.h (_Hahstable<>::_M_remove_bucket_begin): Remove
	_M_before_begin check and cleanup implementation.

2024-01-22  Jonathan Wakely  <jwakely@redhat.com>

	* testsuite/std/time/clock/file/io.cc: Fix expected result in
	assertion and call test_format() from main.

2024-01-21  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/113500
	* include/bits/chrono_io.h (__formatter_chrono::_M_S): Fix
	printing of subseconds with floating-point rep.
	(__formatter_chrono::_M_format_to_ostream): Do not write
	time_point specializations directly to the ostream.
	(formatter<chrono::sys_time<D>, C>::parse): Do not allow an
	empty chrono-spec if the type fails to meet the constraints for
	writing to an ostream with operator<<.
	* testsuite/std/time/clock/file/io.cc: Check formatting
	non-integral times with empty chrono-specs.
	* testsuite/std/time/clock/gps/io.cc: Likewise.
	* testsuite/std/time/clock/utc/io.cc: Likewise.
	* testsuite/std/time/hh_mm_ss/io.cc: Likewise.

2024-01-21  Jonathan Wakely  <jwakely@redhat.com>

	* include/bits/chrono.h (__file_clock::from_sys)
	(__file_clock::to_sys, __file_clock::_S_from_sys)
	(__file_clock::_S_to_sys): Use common_type for return type.
	* testsuite/std/time/clock/file/members.cc: Check round trip
	conversion for time with lower precision that seconds.

2024-01-21  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/113512
	* include/std/format (__formatter_fp::format): Fix logic for
	alternate forms.
	* testsuite/std/format/functions/format.cc: Check buggy cases of
	alternate forms with g presentation type.

2024-01-20  Marek Polacek  <polacek@redhat.com>

	PR c++/111410
	* include/std/ranges: Add #pragma to disable -Wdangling-reference with
	std::ranges::views::__adaptor::operator|.

2024-01-19  Jonathan Wakely  <jwakely@redhat.com>

	* include/std/format (_Spec::_M_parse_fill_and_align): Do not
	use CTAD for _Utf32_view.

2024-01-19  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/108822
	* include/std/tuple (__glibcxx_no_dangling_refs) [C++17]: Fix
	wrong fold-operator.
	* testsuite/20_util/tuple/dangling_ref.cc: Check tuples with one
	element and three elements. Check allocator-extended
	constructors.

2024-01-19  Patrick Palka  <ppalka@redhat.com>

	* include/precompiled/stdc++.h [_GLIBCXX_HOSTED]: Include
	<print> and <text_encoding> for C++23 and C++26 respectively.

2024-01-18  Patrick Palka  <ppalka@redhat.com>

	* include/bits/stl_pair.h [__cplusplus > 202002L]:
	Guard P2321R2 changes with __glibcxx_ranges_zip instead.

2024-01-18  Patrick Palka  <ppalka@redhat.com>

	* include/std/tuple [__cplusplus > 202002L]: Guard P2321R2
	changes with __cpp_lib_ranges_zip instead.

2024-01-18  Patrick Palka  <ppalka@redhat.com>

	PR libstdc++/109536
	* include/debug/safe_base.h (_Safe_sequence_base::_M_swap):
	Remove _GLIBCXX20_CONSTEXPR from non-inline member function.
	* include/debug/safe_iterator.h
	(_GLIBCXX20_CONSTEXPR_NON_LITERAL_SCOPE_BEGIN): Define.
	(_GLIBCXX20_CONSTEXPR_NON_LITERAL_SCOPE_END): Define.
	(_Safe_iterator::operator=): Use them around the code path that
	defines a variable of type __gnu_cxx::__scoped_lock.
	(_Safe_iterator::operator++): Likewise.
	(_Safe_iterator::operator--): Likewise.
	(_Safe_iterator::operator+=): Likewise.
	(_Safe_iterator::operator-=): Likewise.
	* testsuite/23_containers/vector/element_access/constexpr.cc
	(test_iterators): Test more iterator operations.
	* testsuite/23_containers/vector/bool/element_access/constexpr.cc
	(test_iterators): Likewise.
	* testsuite/std/ranges/adaptors/all.cc (test08) [_GLIBCXX_DEBUG]:
	Remove.

2024-01-18  Jonathan Wakely  <jwakely@redhat.com>

	* include/bits/unicode.h (__charset_alias_match): Initialize
	__var_a and __var_b.

2024-01-18  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/113450
	* testsuite/std/format/functions/format.cc: Use signed char
	instead of int8_t.

2024-01-17  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/113318
	* acinclude.m4 (GLIBCXX_CONFIGURE): Add c++26 directory.
	(GLIBCXX_CHECK_TEXT_ENCODING): Define.
	* config.h.in: Regenerate.
	* configure: Regenerate.
	* configure.ac: Use GLIBCXX_CHECK_TEXT_ENCODING.
	* include/Makefile.am: Add new headers.
	* include/Makefile.in: Regenerate.
	* include/bits/locale_classes.h (locale::encoding): Declare new
	member function.
	* include/bits/unicode.h (__charset_alias_match): New function.
	* include/bits/text_encoding-data.h: New file.
	* include/bits/version.def (text_encoding): Define.
	* include/bits/version.h: Regenerate.
	* include/std/text_encoding: New file.
	* src/Makefile.am: Add new subdirectory.
	* src/Makefile.in: Regenerate.
	* src/c++26/Makefile.am: New file.
	* src/c++26/Makefile.in: New file.
	* src/c++26/text_encoding.cc: New file.
	* src/experimental/Makefile.am: Include c++26 convenience
	library.
	* src/experimental/Makefile.in: Regenerate.
	* python/libstdcxx/v6/printers.py (StdTextEncodingPrinter): New
	printer.
	* scripts/gen_text_encoding_data.py: New file.
	* testsuite/22_locale/locale/encoding.cc: New test.
	* testsuite/ext/unicode/charset_alias_match.cc: New test.
	* testsuite/std/text_encoding/cons.cc: New test.
	* testsuite/std/text_encoding/members.cc: New test.
	* testsuite/std/text_encoding/requirements.cc: New test.

2024-01-17  Jonathan Wakely  <jwakely@redhat.com>

	* include/bits/unicode.h (_Grapheme_cluster_view): Require view.
	Do not use CTAD for _Utf32_view.
	(__format_width, __truncate): Do not use CTAD.
	(enable_borrowed_range<_Utf_view<T, R>>): Define specialization.
	(enable_borrowed_range<_Grapheme_cluster_view<R>>): Likewise.

2024-01-17  Patrick Palka  <ppalka@redhat.com>

	* include/std/ranges (views::_CartesianProduct::operator()):
	Adjust identity case as per P2540R1.
	* testsuite/std/ranges/cartesian_product/1.cc (test01):
	Adjust expected result of the identity case.

2024-01-15  Patrick Palka  <ppalka@redhat.com>

	* include/std/variant (__detail::__variant::_Variadic_union):
	Add bool __trivially_destructible template parameter.
	(__detail::__variant::_Variadic_union::~_Variadic_union):
	Use __trivially_destructible in constraints instead.
	(__detail::__variant::_Variant_storage): Pass
	__trivially_destructible value to _Variadic_union.

2024-01-15  Patrick Palka  <ppalka@redhat.com>

	* include/bits/stl_iterator.h (const_iterator): Define conversion
	operators as per P2836R1.
	* include/bits/version.def (ranges_as_const): Update value.
	* include/bits/version.h: Regenerate.
	* testsuite/24_iterators/const_iterator/1.cc (test04): New test.
	* testsuite/std/ranges/adaptors/as_const/1.cc: Adjust expected
	value of __cpp_lib_ranges_as_const.
	* testsuite/std/ranges/version_c++23.cc: Likewise.

2024-01-15  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/108822
	* include/std/tuple (__assignable, __is_nothrow_assignable):
	Move pre-C++20 definitions adjacent to their use.

2024-01-15  Jonathan Wakely  <jwakely@redhat.com>

	PR testsuite/113366
	* include/std/format (basic_format_arg): Use __formattable
	variable template instead of __format::__formattable_with
	concept.

2024-01-15  Jonathan Wakely  <jwakely@redhat.com>

	* src/c++20/tzdata.zi: Import new file from 2023d release.
	* src/c++20/tzdb.cc (tzdb_list::_Node::_S_read_leap_seconds)
	Update expiry date for leap seconds list.

2024-01-13  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/108822
	* include/std/tuple (tuple): Add checks for dangling references.
	Reimplement constraints and constant expressions using C++20
	features.
	* include/std/type_traits [C++20]
	(__is_implicitly_default_constructible_v): Define.
	(__is_implicitly_default_constructible): Use variable template.
	* testsuite/20_util/tuple/dangling_ref.cc: New test.

2024-01-13  Patrick Palka  <ppalka@redhat.com>

	PR libstdc++/108827
	PR libstdc++/111327
	* include/bits/version.def (bind_back): Define.
	* include/bits/version.h: Regenerate.
	* include/std/functional (_Bind_back): Define for C++23.
	(bind_back): Likewise.
	* testsuite/20_util/function_objects/bind_back/1.cc: New test
	(adapted from corresponding bind_front test).
	* testsuite/20_util/function_objects/bind_back/111327.cc: Likewise.

2024-01-13  Patrick Palka  <ppalka@redhat.com>

	* include/std/functional (_Bind_front): Remove =default special
	member function declarations.
	(_Bind_front::operator()): Implement using C++23 deducing this
	when available.
	* testsuite/20_util/function_objects/bind_front/111327.cc:
	Adjust testcase to expect better errors in C++23 mode.

2024-01-13  Patrick Palka  <ppalka@redhat.com>

	* include/std/ranges (views::__adaptor::operator|): Perform
	perfect forwarding of arguments.
	(views::__adaptor::_RangeAdaptor::operator()): Pass dummy
	first argument to _Partial.
	(views::__adaptor::_Partial::_Partial): Likewise.  Add dummy
	first parameter.
	(views::__adaptor::_Pipe::_Pipe): Perform perfect forwarding
	of arguments.
	(to): Pass dummy first argument to _Partial.

2024-01-13  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/107466
	* include/bits/random.tcc (subtract_with_carry_engine::seed):
	Implement proposed resolution of LWG 4014.
	* testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
	line number.
	* testsuite/26_numerics/random/subtract_with_carry_engine/cons/lwg3809.cc:
	Check for expected result of 64-bit engine with seed that
	doesn't fit in 32-bits.

2024-01-12  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/113320
	* include/std/format (__format::_Runtime_format_string): Add
	constructor and disable copy operations.
	(basic_format_string(_Runtime_format_string)): Add noexcept and
	take parameter by value not rvalue reference.
	(runtime_format): Add noexcept.
	* testsuite/std/format/runtime_format.cc: Check noexcept. Check
	that construction is only possible from prvalues, not xvalues.

2024-01-12  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/105505
	* include/bits/stl_pair.h (pair::pair(U1&&, U2&&)) [C++23]: Add
	default template arguments, as per P1951R1.
	* testsuite/20_util/pair/cons/default_tmpl_args.cc: New test.

2024-01-12  Jonathan Wakely  <jwakely@redhat.com>

	* include/std/format (__format::_Arg_store): Fix PR number in
	comment. Simplify preprocessor code.

2024-01-11  Jonathan Wakely  <jwakely@redhat.com>

	* doc/xml/manual/evolution.xml: Fix spelling.
	* doc/html/manual/api.html: Regenerate.

2024-01-11  Jonathan Wakely  <jwakely@redhat.com>

	* doc/xml/manual/evolution.xml: Document addition of
	libstdc++exp.a.
	* doc/html/*: Regenerate.

2024-01-11  Marcus Haehnel  <marcus.haehnel@kernkonzept.com>

	* libsupc++/eh_unex_handler.cc: Adjust definition type to
	declaration.

2024-01-11  Michael Levine  <mlevine55@bloomberg.net>

	* include/std/ranges (__glibcxx_want_ranges_iota): Remove
	duplicate definition.

2024-01-11  François Dumont  <fdumont@gcc.gnu.org>

	PR libstdc++/112477
	* src/c++11/debug.cc
	(_Safe_iterator_base::_M_attach): Reset _M_version to 0 if attaching to null
	sequence.
	(_Safe_iterator_base::_M_attach_single): Likewise.
	(_Safe_local_iterator_base::_M_attach): Likewise.
	(_Safe_local_iterator_base::_M_attach_single): Likewise.
	* testsuite/23_containers/map/debug/112477.cc: New test case.

2024-01-11  Patrick Palka  <ppalka@redhat.com>

	* include/bits/move.h (__like_t): Define in C++23 mode.
	* include/std/ranges (views::__adaptor::Partial::operator()):
	Implement using C++23 deducing this when available.
	(views::__adaptor::_Pipe::operator()): Likewise.
	* testsuite/std/ranges/adaptors/100577.cc: Adjust testcase to
	accept new "no match for call" errors issued in C++23 mode.
	* testsuite/std/ranges/adaptors/lazy_split_neg.cc: Likewise.

2024-01-11  Jonathan Wakely  <jwakely@redhat.com>

	* python/libstdcxx/v6/printers.py (StdIntegralConstantPrinter):
	Add printer for std::integral_constant.
	* testsuite/libstdc++-prettyprinters/cxx11.cc: Test it.

2024-01-11  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/113258
	* libsupc++/new_opa.cc: Prefer to use posix_memalign if
	available.

2024-01-11  Ken Matsui  <kmatsui@gcc.gnu.org>

	* src/filesystem/ops-common.h (stat_type): Use using.

2024-01-11  Ken Matsui  <kmatsui@gcc.gnu.org>

	PR libstdc++/113250
	* src/c++17/fs_ops.cc (fs::equivalent): Use || instead of &&.
	* src/filesystem/ops.cc (fs::equivalent): Likewise.
	* testsuite/27_io/filesystem/operations/equivalent.cc: Handle
	error codes.
	* testsuite/experimental/filesystem/operations/equivalent.cc:
	Likewise.

2024-01-11  Ken Matsui  <kmatsui@gcc.gnu.org>

	* include/std/type_traits (is_compound): Do not use __not_.
	(is_compound_v): Use is_fundamental_v instead.

2024-01-11  Patrick Palka  <ppalka@redhat.com>

	* include/bits/utility.h (_Nth_type): Use
	_GLIBCXX_USE_BUILTIN_TRAIT instead of __has_builtin.

2024-01-09  Jonathan Wakely  <jwakely@redhat.com>

	* include/bits/unicode-data.h: Regenerate.
	* include/bits/unicode.h (_Utf_iterator::operator++()): Fix off
	by one error.
	(__incb_property): Add missing check for values before the
	first edge.
	(__is_extended_pictographic): Invert return values to fix
	copy&pasted logic.
	(_Grapheme_cluster_view::_Iterator): Remove second iterator
	member and find end of cluster lazily.
	* testsuite/ext/unicode/grapheme_view.cc: New test.
	* testsuite/ext/unicode/properties.cc: New test.
	* testsuite/ext/unicode/view.cc: New test.

2024-01-09  Andreas Schwab  <schwab@linux-m68k.org>

	* scripts/extract_symvers.in: Require final colon to only match
	.dsynsym in the header of the dynamic symtab.

2024-01-09  Jonathan Wakely  <jwakely@redhat.com>

	* include/bits/chrono_io.h (__formatter_chrono::_M_F): Simplify
	handling of string returned from std::format.
	(__formatter_chrono::_M_R_T): Likewise.

2024-01-08  Jonathan Wakely  <jwakely@redhat.com>

	* include/bits/unicode.h (__null_sentinel): Remove.
	* testsuite/17_intro/names.cc: Add __null_sentinel.

2024-01-08  Jonathan Wakely  <jwakely@redhat.com>

	* include/std/format (__format::_Runtime_format_string): Define
	new class template.
	(basic_format_string): Add non-consteval constructor for runtime
	format strings.
	(runtime_format): Define new function for C++26.
	* testsuite/std/format/runtime_format.cc: New test.

2024-01-08  Jonathan Wakely  <jwakely@redhat.com>

	* include/bits/chrono_io.h (__formatter_chrono): Always use
	lvalue arguments to make_format_args.
	* include/std/format (make_format_args): Change parameter pack
	from forwarding references to lvalue references. Remove use of
	remove_reference_t which is now unnecessary.
	(format_to, formatted_size): Remove incorrect forwarding of
	arguments.
	* include/std/ostream (print): Remove forwarding of arguments.
	* include/std/print (print): Likewise.
	* testsuite/20_util/duration/io.cc: Use lvalues as arguments to
	make_format_args.
	* testsuite/std/format/arguments/args.cc: Likewise.
	* testsuite/std/format/arguments/lwg3810.cc: Likewise.
	* testsuite/std/format/functions/format.cc: Likewise.
	* testsuite/std/format/functions/vformat_to.cc: Likewise.
	* testsuite/std/format/string.cc: Likewise.
	* testsuite/std/time/day/io.cc: Likewise.
	* testsuite/std/time/month/io.cc: Likewise.
	* testsuite/std/time/weekday/io.cc: Likewise.
	* testsuite/std/time/year/io.cc: Likewise.
	* testsuite/std/time/year_month_day/io.cc: Likewise.
	* testsuite/std/format/arguments/args_neg.cc: New test.

2024-01-08  Jonathan Wakely  <jwakely@redhat.com>

	* include/Makefile.am: Add new headers.
	* include/Makefile.in: Regenerate.
	* include/bits/unicode.h: New file.
	* include/bits/unicode-data.h: New file.
	* include/std/format: Include <bits/unicode.h>.
	(__literal_encoding_is_utf8): Move to <bits/unicode.h>.
	(_Spec::_M_fill): Change type to char32_t.
	(_Spec::_M_parse_fill_and_align): Read a Unicode scalar value
	instead of a single character.
	(__write_padded): Change __fill_char parameter to char32_t and
	encode it into the output.
	(__formatter_str::format): Use new __unicode::__field_width and
	__unicode::__truncate functions.
	* include/std/ostream: Adjust namespace qualification for
	__literal_encoding_is_utf8.
	* include/std/print: Likewise.
	* src/c++23/print.cc: Add [[unlikely]] attribute to error path.
	* testsuite/ext/unicode/view.cc: New test.
	* testsuite/std/format/functions/format.cc: Add missing examples
	from the standard demonstrating alignment with non-ASCII
	characters. Add examples checking correct handling of extended
	grapheme clusters.

2024-01-08  Jonathan Wakely  <jwakely@redhat.com>

	* include/bits/version.def (format_uchar): Define.
	* include/bits/version.h: Regenerate.
	* include/std/format (formatter<C, C>::format): Check for
	_Pres_c and call _M_format_character directly. Cast C to its
	unsigned equivalent for formatting as an integer.
	(formatter<char, wchar_t>::format): Likewise.
	(basic_format_arg(T&)): Store char arguments as unsigned char
	for formatting to a wide string.
	* testsuite/std/format/functions/format.cc: Adjust test. Check
	formatting of

2024-01-07  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/112997
	* libsupc++/unwind-cxx.h (__cxa_call_terminate): Change first
	parameter to void*.

2024-01-07  Jonathan Wakely  <jwakely@redhat.com>

	* testsuite/20_util/variant/87619.cc: Remove dg-timeout-factor.

2024-01-07  Jonathan Wakely  <jwakely@redhat.com>

	* include/std/type_traits (is_trivially_destructible_v): Use
	built-in directly when concepts are supported.
	* testsuite/20_util/is_trivially_destructible/value_v.cc: New
	test.

2024-01-06  Gwenole Beauchesne  <gb.devel@gmail.com>

	* testsuite/tr1/8_c_compatibility/cinttypes/functions.cc: Use
	nonnull arguments to strtoimax() and wcstoimax() functions.

2024-01-05  Jonathan Wakely  <jwakely@redhat.com>

	* src/c++17/fs_path.cc (path::_List::reserve): Limit maximum
	size and check for overflows in arithmetic.
	(path::operator/=(const path&)): Remove redundant exponential
	growth calculation.

2024-01-05  Martin Küttler  <martin.kuettler@kernkonzept.com>

	* src/c++17/fs_path.cc (path::_List::reserve): Avoid
	floating-point arithmetic.

2024-01-05  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/113241
	* include/std/type_traits (is_convertible_v): Guard use of
	built-in with preprocessor check.

2024-01-05  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/113200
	* include/bits/char_traits.h (__gnu_cxx::char_traits::move): Use
	__builtin_constant_p to check for unrelated pointers that cannot
	be compared during constant evaluation.
	* testsuite/21_strings/char_traits/requirements/113200.cc: New
	test.

2024-01-05  Cassio Neri  <cassio.neri@gmail.com>

	* include/std/chrono: Fix + and - for months and weekdays.
	* testsuite/std/time/month/1.cc: Add constexpr tests against overflow.
	* testsuite/std/time/month/2.cc: New test for extreme values.
	* testsuite/std/time/weekday/1.cc: Add constexpr tests against overflow.
	* testsuite/std/time/weekday/2.cc: New test for extreme values.

2024-01-05  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/113099
	* include/bits/locale_classes.tcc (__try_use_facet): Use
	if-constexpr for C++11 and up.

2024-01-05  Ken Matsui  <kmatsui@gcc.gnu.org>

	* include/std/type_traits: Use _GLIBCXX_USE_BUILTIN_TRAIT.

2024-01-04  Arsen Arsenović  <arsen@aarsen.me>

	* include/std/generator (_Subyield_state::_M_jump_in): Fix typo
	reported by Will Hawkins <hawkinsw@obs.cr>.

2024-01-04  Arsen Arsenović  <arsen@aarsen.me>

	* include/std/generator (_Stateless_alloc): Rename typename _A
	to _All.

2024-01-03  Patrick Palka  <ppalka@redhat.com>

	PR testsuite/113175
	* testsuite/std/ranges/iota/max_size_type.cc (test02): Reduce
	'limit' to 100 from 1000 and adjust 'log2_limit' accordingly.
	(test03): Likewise.


Copyright (C) 2024 Free Software Foundation, Inc.

Copying and distribution of this file, with or without modification,
are permitted in any medium without royalty provided the copyright
notice and this notice are preserved.