2024-08-01  Release Manager

	* GCC 14.2.0 released.

2024-07-23  Jonathan Wakely  <jwakely@redhat.com>

	Backported from master:
	2024-07-23  Jonathan Wakely  <jwakely@redhat.com>

	* src/c++23/print.cc (__open_terminal): Use [[maybe_unused]] on
	parameter.

2024-07-23  Detlef Vollmann  <dv@vollmann.ch>

	Backported from master:
	2024-07-23  Detlef Vollmann  <dv@vollmann.ch>

	PR libstdc++/115482
	* src/c++23/print.cc (__open_terminal) [__AVR__]: Do not use
	isatty.

2024-07-12  Jonathan Wakely  <jwakely@redhat.com>

	Backported from master:
	2024-06-13  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/113376
	* include/pstl/pstl_config.h: Use #if instead of #ifdef to test
	the _PSTL_USAGE_WARNINGS macro.

2024-07-12  Jonathan Wakely  <jwakely@redhat.com>

	Backported from master:
	2024-06-21  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/115522
	* include/std/array (to_array): Workaround the fact that
	std::is_trivial is not sufficient to check that a type is
	trivially default constructible and assignable.
	* testsuite/23_containers/array/creation/115522.cc: New test.

2024-07-09  Jonathan Wakely  <jwakely@redhat.com>

	Backported from master:
	2024-07-08  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/115807
	* include/c_compatibility/stdatomic.h (_Atomic): Ensure it
	refers to std::atomic in the global namespace.
	* testsuite/29_atomics/headers/stdatomic.h/115807.cc: New test.

2024-07-09  Jonathan Wakely  <jwakely@redhat.com>

	Backported from master:
	2024-06-28  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/115585
	* src/c++11/assert_fail.cc (__glibcxx_assert_fail): Add
	definition for non-verbose builds.

2024-06-28  Jonathan Wakely  <jwakely@redhat.com>

	Backported from master:
	2024-06-27  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/115668
	* include/bits/chrono_io.h (formatter<duration<R,P, C>::format):
	Do not use chrono::abs.
	* testsuite/20_util/duration/io.cc: Check formatting a duration
	with unsigned rep.

2024-06-27  Jonathan Wakely  <jwakely@redhat.com>

	Backported from master:
	2024-06-25  Jonathan Wakely  <jwakely@redhat.com>

	* doc/xml/faq.xml: Replace viewcvs links with cgit links.
	* doc/xml/manual/allocator.xml: Likewise.
	* doc/xml/manual/mt_allocator.xml: Likewise.
	* doc/html/*: Regenerate.

2024-06-27  Alexandre Oliva  <oliva@adacore.com>

	Backported from master:
	2024-06-27  Alexandre Oliva  <oliva@adacore.com>

	PR libstdc++/115454
	* testsuite/experimental/simd/pr115454_find_last_set.cc: Defer
	to check_vect_support_and_set_flags's default dg-do action.

2024-06-25  Jonathan Wakely  <jwakely@redhat.com>

	* doc/xml/manual/status_cxx1998.xml: Remove confusing "not in
	any particular release" text.
	* doc/xml/manual/status_cxx2011.xml: Likewise.
	* doc/xml/manual/status_cxx2014.xml: Likewise.
	* doc/xml/manual/status_cxx2017.xml: Likewise.
	* doc/xml/manual/status_cxx2020.xml: Likewise.
	* doc/xml/manual/status_cxx2023.xml: Likewise.
	* doc/xml/manual/status_cxxtr1.xml: Likewise.
	* doc/xml/manual/status_cxxtr24733.xml: Likewise.
	* doc/html/manual/status.html: Regenerate.

2024-06-21  Matthias Kretz  <m.kretz@gsi.de>

	Backported from master:
	2024-06-21  Matthias Kretz  <m.kretz@gsi.de>

	PR libstdc++/115575
	* testsuite/experimental/simd/pr115454_find_last_set.cc: Require
	avx512f_runtime. Don't memcpy fixed_size masks.

2024-06-20  Matthias Kretz  <m.kretz@gsi.de>

	Backported from master:
	2024-06-20  Matthias Kretz  <m.kretz@gsi.de>

	PR libstdc++/115454
	* include/experimental/bits/simd_x86.h (_S_not_equal_to): Use
	neq comparison instead of bitwise negation after eq.
	(_S_find_last_set): Clear unused high bits before computing
	bit_width.
	* testsuite/experimental/simd/pr115454_find_last_set.cc: New
	test.

2024-06-14  Jonathan Wakely  <jwakely@redhat.com>

	Backported from master:
	2024-06-14  Jonathan Wakely  <jwakely@redhat.com>

	* libsupc++/new_opa.cc [!_GLIBCXX_HOSTED]: Fix declaration of
	posix_memalign.

2024-06-10  Matthias Kretz  <m.kretz@gsi.de>

	Backported from master:
	2024-06-04  Matthias Kretz  <m.kretz@gsi.de>

	PR libstdc++/115308
	* include/experimental/bits/simd.h (__int_for_sizeof): Remove
	special cases for __clang__.
	(_SimdWrapper): Change constructor overload set to allow
	conversion from vector types with integral conversions via bit
	reinterpretation.

2024-06-10  Matthias Kretz  <m.kretz@gsi.de>

	Backported from master:
	2024-05-29  Matthias Kretz  <m.kretz@gsi.de>

	PR libstdc++/115247
	* include/experimental/bits/simd.h (__as_vector): Don't use
	vector_size(8) on __i386__.
	(__vec_shuffle): Never return MMX vectors, widen to 16 bytes
	instead.
	(concat): Fix padding calculation to pick up widening logic from
	__as_vector.

2024-06-10  Matthias Kretz  <m.kretz@gsi.de>

	Backported from master:
	2024-05-13  Matthias Kretz  <m.kretz@gsi.de>

	PR libstdc++/114958
	* include/experimental/bits/simd.h (__as_vector): Return scalar
	simd as one-element vector. Return vector from single-vector
	fixed_size simd.
	(__vec_shuffle): New.
	(__extract_part): Adjust return type signature.
	(split): Use __extract_part for any split into non-fixed_size
	simds.
	(concat): If the return type stores a single vector, use
	__vec_shuffle (which calls __builtin_shufflevector) to produce
	the return value.
	* include/experimental/bits/simd_builtin.h
	(__shift_elements_right): Removed.
	(__extract_part): Return single elements directly. Use
	__vec_shuffle (which calls __builtin_shufflevector) to for all
	non-trivial cases.
	* include/experimental/bits/simd_fixed_size.h (__extract_part):
	Return single elements directly.
	* testsuite/experimental/simd/pr114958.cc: New test.

2024-06-04  Jonathan Wakely  <jwakely@redhat.com>

	Backported from master:
	2024-06-04  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/115335
	* include/std/span (span::at): Guard with feature test macro.

2024-06-04  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

	Backported from master:
	2024-05-29  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

	PR libstdc++/111641
	* src/libbacktrace/Makefile.am (AM_CFLAGS): Add -funwind-tables.
	* src/libbacktrace/Makefile.in: Regenerate.
	* testsuite/19_diagnostics/stacktrace/current.cc (dg-options): Add
	-funwind-tables.
	* testsuite/19_diagnostics/stacktrace/entry.cc: Likewise.
	* testsuite/19_diagnostics/stacktrace/hash.cc: Likewise.
	* testsuite/19_diagnostics/stacktrace/output.cc: Likewise.
	* testsuite/19_diagnostics/stacktrace/stacktrace.cc: Likewise.

2024-06-03  François Dumont  <frs.dumont@gmail.com>

	Backported from master:
	2024-06-03  François Dumont  <frs.dumont@gmail.com>

	PR libstdc++/109849
	* include/bits/vector.tcc
	(std::vector<>::_M_range_insert(iterator, _FwdIt, _FwdIt,
	forward_iterator_tag))[__cplusplus < 201103L]: Add __builtin_unreachable
	expression to tell the compiler that the allocated buffer is large enough to
	receive current elements plus the elements of the range to insert.

2024-06-01  Jonathan Wakely  <jwakely@redhat.com>

	Backported from master:
	2024-06-01  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/115269
	* doc/xml/manual/using.xml: Replace link to gcc-4.3.2 docs.
	Replace list of -std=... options with a single entry for -std.
	* doc/html/manual/using.html: Regenerate.

2024-05-28  Jonathan Wakely  <jwakely@redhat.com>

	Backported from master:
	2024-05-22  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/114940
	* include/bits/version.def (generator): Depend on
	__cpp_sized_deallocation.
	* include/bits/version.h: Regenerate.
	* include/std/stacktrace (_GLIBCXX_SIZED_DELETE): New macro.
	(basic_stacktrace::_Impl::_M_deallocate): Use it.

2024-05-22  Jonathan Wakely  <jwakely@redhat.com>

	Backported from master:
	2024-05-22  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/115099
	* include/bits/std_thread.h: Declare formatter as friend of
	thread::id.
	* include/std/thread (operator<<): Convert non-void pointers to
	void pointers for output.
	(formatter): Add constraint that thread::native_handle_type is a
	pointer or integer.
	(formatter::format): Reimplement without basic_ostringstream.
	* testsuite/30_threads/thread/id/output.cc: Check output
	compiles before <sstream> has been included.

2024-05-17  Jonathan Wakely  <jwakely@redhat.com>

	Backported from master:
	2024-05-17  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/115119
	* include/bits/unicode.h (_Iterator::operator++(int)): Fix typo
	in increment expression.
	* testsuite/ext/unicode/grapheme_view.cc: Check post-increment
	on view's iterator.

2024-05-14  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/115015
	* src/c++23/print.cc (__open_terminal(streambuf*)) [!__cpp_rtti]:
	Do not use dynamic_cast.

2024-05-14  Jonathan Wakely  <jwakely@redhat.com>

	Backported from master:
	2024-05-14  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/115063
	* include/std/stacktrace (basic_stacktrace::max_size): Fix typo
	in reference to _M_alloc member.
	* testsuite/19_diagnostics/stacktrace/stacktrace.cc: Check
	max_size() compiles.

2024-05-14  Jonathan Wakely  <jwakely@redhat.com>

	Backported from master:
	2024-05-01  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/114891
	* include/std/generator: Check feature test macro before using
	is_pointer_interconvertible_v.

2024-05-14  Jonathan Wakely  <jwakely@redhat.com>

	Backported from master:
	2024-05-07  Jonathan Wakely  <jwakely@redhat.com>

	* testsuite/util/testsuite_abi.cc: Update latest versions to
	new versions that should be used in future.

2024-05-14  Jonathan Wakely  <jwakely@redhat.com>

	Backported from master:
	2024-05-07  Jonathan Wakely  <jwakely@redhat.com>

	* include/bits/unicode.h (_Unicode_view::_M_read_utf8): Ensure
	count of characters consumed is correct when the end of the
	input is reached unexpectedly.
	* testsuite/ext/unicode/view.cc: Test incomplete UTF-8
	sequences.

2024-05-14  Jonathan Wakely  <jwakely@redhat.com>

	Backported from master:
	2024-05-07  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/114866
	* include/bits/out_ptr.h [!_GLIBCXX_HOSTED]: Don't refer to
	shared_ptr, __shared_ptr or __is_shred_ptr.
	* testsuite/20_util/headers/memory/114866.cc: New test.

2024-05-07  Release Manager

	* GCC 14.1.0 released.

2024-05-03  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.

2024-04-30  Jonathan Wakely  <jwakely@redhat.com>

	Backported from master:
	2024-04-30  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/114863
	* include/std/format (__formatter_fp::format): Only use
	_M_localized for finite values.
	* testsuite/std/format/functions/format.cc: Check localized
	formatting of NaN and initiny.

2024-04-29  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

	* config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
	* config/abi/post/i386-solaris/amd64/baseline_symbols.txt:
	Likewise.
	* config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
	* config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
	Likewise.

2024-04-29  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

	Backported from master:
	2024-04-29  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

	* config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
	* config/abi/post/i386-solaris/amd64/baseline_symbols.txt:
	Likewise.
	* config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
	* config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
	Likewise.

2024-04-26  Jonathan Wakely  <jwakely@redhat.com>

	* doc/html/manual/status.html: Regenerate.
	* doc/xml/manual/status_cxx1998.xml: Replace references to
	mainline GCC.
	* doc/xml/manual/status_cxx2011.xml: Likewise.
	* doc/xml/manual/status_cxx2014.xml: Likewise.
	* doc/xml/manual/status_cxx2017.xml: Likewise.
	* doc/xml/manual/status_cxx2020.xml: Likewise.
	* doc/xml/manual/status_cxx2023.xml: Likewise.
	* doc/xml/manual/status_cxxtr1.xml: Likewise.
	* doc/xml/manual/status_cxxtr24733.xml: Likewise.

2024-04-25  Jonathan Wakely  <jwakely@redhat.com>

	* scripts/run_doxygen: Rename man pages for nested types.

2024-04-25  Jonathan Wakely  <jwakely@redhat.com>

	* include/std/chrono (tzdb_list): Fix typo in Doxygen comment.

2024-04-25  Jonathan Wakely  <jwakely@redhat.com>

	* scripts/run_doxygen: Adjust sed pattern to match '\fR' for
	new man output that Doxygen 1.10 generates.

2024-04-25  Jonathan Wakely  <jwakely@redhat.com>

	* doc/doxygen/stdheader.cc (init_map): Add missing headers.
	* doc/doxygen/user.cfg.in (EXCLUDE): Exclude generated files for
	std::format and std::text_encoding.

2024-04-25  Jonathan Wakely  <jwakely@redhat.com>

	* include/std/variant: Add comment to #include.

2024-04-22  Matthias Kretz  <m.kretz@gsi.de>

	PR libstdc++/114803
	* include/experimental/bits/simd_builtin.h
	(_SimdBase2::operator __vector_type_t): There is no __builtin()
	function in _SimdWrapper, instead use its conversion operator.
	* testsuite/experimental/simd/pr114803_vecbuiltin_cvt.cc: New
	test.

2024-04-22  Matthias Kretz  <m.kretz@gsi.de>

	* include/experimental/bits/simd.h: Ignore -Wnarrowing for
	arm_neon.h.
	(__int_for_sizeof): Replace tautological compare with checking
	for invalid template parameter value.
	* include/experimental/bits/simd_builtin.h (__extract_part):
	Remove tautological compare by combining two static_assert.

2024-04-22  Jakub Jelinek  <jakub@redhat.com>

	* testsuite/17_intro/names.cc (d, f): Undefine on s390*-linux*.
	* testsuite/17_intro/headers/c++1998/all_attributes.cc (packed): Don't
	define on s390.
	* testsuite/17_intro/headers/c++2011/all_attributes.cc (packed):
	Likewise.
	* testsuite/17_intro/headers/c++2014/all_attributes.cc (packed):
	Likewise.
	* testsuite/17_intro/headers/c++2017/all_attributes.cc (packed):
	Likewise.
	* testsuite/17_intro/headers/c++2020/all_attributes.cc (packed):
	Likewise.

2024-04-19  Jonathan Wakely  <jwakely@redhat.com>

	* include/bits/refwrap.h (operator<=>): Simplify constraints.

2024-04-19  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/114770
	* src/c++20/tzdb.cc (do_locate_zone): Support links that have
	another link as their target.
	* testsuite/std/time/tzdb/1.cc: Check that all zones and links
	can be found by locate_zone.
	* testsuite/std/time/tzdb/links.cc: New test.

2024-04-18  Alexandre Oliva  <oliva@adacore.com>

	* testsuite/29_atomics/atomic/compare_exchange_padding.cc:
	Disable SRA.

2024-04-18  Alexandre Oliva  <oliva@adacore.com>

	* testsuite/20_util/from_chars/8.cc: Skip float128_t testing
	on aarch64-vxworks.
	* testsuite/20_util/to_chars/float128_c++23.cc: Xfail run on
	aarch64-vxworks.

2024-04-18  Alexandre Oliva  <oliva@adacore.com>

	* src/c++20/tzdb.cc (__gnu_cxx::zoneinfo_dir_override): Define
	on VxWorks non-RTP.

2024-04-17  Jonathan Wakely  <jwakely@redhat.com>

	* include/std/ostream (println(ostream&)): Define new overload.
	* include/std/print (println(FILE*), println()): Likewise.
	* testsuite/27_io/basic_ostream/print/2.cc: New test.
	* testsuite/27_io/print/1.cc: Remove unused header.
	* testsuite/27_io/print/3.cc: New test.

2024-04-17  Matthias Kretz  <m.kretz@gsi.de>

	* include/experimental/bits/numeric_traits.h: Add include guard.

2024-04-17  Matthias Kretz  <m.kretz@gsi.de>

	PR libstdc++/114750
	* include/experimental/bits/simd_builtin.h
	(_SimdImplBuiltin::_S_load, _S_store): Fall back to copying
	scalars if the memory type cannot be vectorized for the target.

2024-04-16  Jonathan Wakely  <jwakely@redhat.com>

	* config/locale/dragonfly/numeric_members.cc: Fix typos in
	comments.
	* config/locale/gnu/numeric_members.cc: Likewise.

2024-04-15  Jonathan Wakely  <jwakely@redhat.com>

	* doc/xml/manual/abi.xml: Replace "<next>" with "14.1.0".
	* doc/html/manual/abi.html: Regenerate.

2024-04-15  Jonathan Wakely  <jwakely@redhat.com>

	* include/bits/refwrap.h (reference_wrapper): Add comparison
	operators as proposed by P2944R3.
	* include/bits/version.def (reference_wrapper): Define.
	* include/bits/version.h: Regenerate.
	* include/std/functional: Enable feature test macro.
	* testsuite/20_util/reference_wrapper/compare.cc: New test.

2024-04-15  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/113386
	* include/bits/stl_pair.h (operator==, operator<=>): Support
	heterogeneous comparisons, as per LWG 3865.
	* testsuite/20_util/pair/comparison_operators/lwg3865.cc: New
	test.

2024-04-15  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/93672
	* src/c++98/istream.cc (istream::ignore(streamsize, int_type)):
	Treat all negative delimiter values as eof().
	* testsuite/27_io/basic_istream/ignore/char/93672.cc: New test.
	* testsuite/27_io/basic_istream/ignore/wchar_t/93672.cc: New
	test.

2024-04-15  Andreas Schwab  <schwab@suse.de>

	* config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.

2024-04-13  H.J. Lu  <hjl.tools@gmail.com>

	* config/abi/post/x86_64-linux-gnu/x32/baseline_symbols.txt:
	Updated.

2024-04-11  Jakub Jelinek  <jakub@redhat.com>

	* doc/xml/manual/abi.xml: Add latest library versions.
	* doc/html/manual/abi.html: Regenerate.

2024-04-11  Jakub Jelinek  <jakub@redhat.com>

	* config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
	* config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
	* config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
	* config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
	* config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
	* config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
	* config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
	* config/abi/post/powerpc64le-linux-gnu/baseline_symbols.txt: Update.
	* config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.

2024-04-11  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/114692
	* config/abi/pre/gnu.ver (GLIBCXX_3.4.32): Move new exports for
	__basic_file::native_handle to ...
	(GLIBCXX_3.4.33): ... here. Adjust to not match wchar_t
	specialization, which isn't used.
	* testsuite/util/testsuite_abi.cc: Add GLIBCXX_3.4.33 and update
	latest version check.

2024-04-11  Jakub Jelinek  <jakub@redhat.com>

	* config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
	* config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
	* config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
	* config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
	* config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
	* config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
	* config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
	* config/abi/post/powerpc64le-linux-gnu/baseline_symbols.txt: Update.
	* config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.

2024-04-10  Jonathan Wakely  <jwakely@redhat.com>

	* testsuite/27_io/manipulators/extended/get_time/char/2.cc:
	Adjust input string so that it matches %a with or without a
	trailing period.
	* testsuite/std/time/year_month_day/io.cc: Adjust expected
	format for %x in the fr_FR locale.

2024-04-10  Jonathan Wakely  <jwakely@redhat.com>

	* src/c++17/fs_ops.cc (remove_all) [__FreeBSD__ || __DragonFly__]:
	Check for EMLINK as well as ELOOP.
	[__NetBSD__]: Check for EFTYPE as well as ELOOP.

2024-04-09  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/114633
	* include/bits/chrono_io.h (_Parser::operator()) <'S'>: Use
	stream extraction if std::from_chars is not available.

2024-04-08  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/114519
	* include/bits/unicode.h (_Utf8_view) [!__cpp_char8_t]: Define
	using char instead of char8_t.
	* testsuite/ext/unicode/view.cc: Use u8""sv literals to create
	string views, instead of std::u8string_view.

2024-04-08  Jonathan Wakely  <jwakely@redhat.com>

	* testsuite/20_util/integer_comparisons/equal_neg.cc: Use
	no-opts selector for errors that depend on -fchar8_t.
	* testsuite/20_util/integer_comparisons/greater_equal_neg.cc:
	Likewise.
	* testsuite/20_util/integer_comparisons/greater_neg.cc:
	Likewise.
	* testsuite/20_util/integer_comparisons/in_range_neg.cc:
	Likewise.
	* testsuite/20_util/integer_comparisons/less_equal_neg.cc:
	Likewise.
	* testsuite/20_util/integer_comparisons/less_neg.cc: Likewise.
	* testsuite/20_util/integer_comparisons/not_equal_neg.cc:
	Likewise.
	* testsuite/21_strings/basic_string/hash/hash_char8_t.cc: Skip
	if -fno-char8_t is used.
	* testsuite/21_strings/headers/cuchar/functions_std_cxx20.cc:
	Likewise.
	* testsuite/27_io/basic_ostream/inserters_character/char/deleted.cc:
	Likewise.
	* testsuite/27_io/basic_ostream/inserters_character/wchar_t/deleted.cc:
	Likewise.
	* testsuite/27_io/filesystem/path/factory/u8path-depr.cc: Use
	char for u8 literal if char8_t is not available.
	* testsuite/27_io/headers/iosfwd/synopsis.cc: Check
	__cpp_char8_t.
	* testsuite/29_atomics/atomic_integral/wait_notify.cc: Likewise.
	* testsuite/29_atomics/headers/atomic/types_std_c++20_neg.cc:
	Remove check for _GLIBCXX_USE_CHAR8_T.

2024-04-08  Jonathan Wakely  <jwakely@redhat.com>

	* testsuite/20_util/from_chars/1_neg.cc: Add char8_t cases,
	using a struct of that name if -fno-char8_t is active.
	* testsuite/20_util/from_chars/1_c++20_neg.cc: Removed.

2024-04-03  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/104606
	* include/std/optional (operator<=>(const optional<T>&, const U&)):
	Reverse order of three_way_comparable_with template arguments.
	* testsuite/20_util/optional/relops/104606.cc: New test.

2024-04-02  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/114519
	* include/bits/unicode.h (_Utf8_view): Guard with check for
	char8_t being enabled.
	(__literal_encoding_is_unicode): Guard use of char8_t with check
	for it being enabled.
	* testsuite/std/format/functions/114519.cc: New test.

2024-04-02  Patrick Palka  <ppalka@redhat.com>

	* include/std/ranges (ranges::__detail::_Empty): Rename to ...
	(ranges::__detail::_Absent): ... this.  Turn into a template
	parameterized by the absent type _Tp and discriminator _Disc.
	(ranges::__detail::__maybe_present_t): Add an optional
	discriminator parameter.
	(slide_view::_M_cached_begin): Pass a discriminator argument to
	__maybe_present_t.
	(slide_view::_M_cached_end): Likewise.
	* testsuite/std/ranges/adaptors/sizeof.cc: Verify the size of
	slide_view<V> is 3 instead 4 pointers.

2024-04-02  Jakub Jelinek  <jakub@redhat.com>

	* acinclude.m4: Fix duplicated words; file file -> file can.
	* configure.host: Fix duplicated words; the the -> the.

2024-03-29  Arsen Arsenović  <arsen@aarsen.me>

	* testsuite/24_iterators/range_generators/01.cc: Drop GCC
	Runtime Library Exception.
	* testsuite/24_iterators/range_generators/02.cc: Drop GCC
	Runtime Library Exception.
	* testsuite/24_iterators/range_generators/copy.cc: Drop GCC
	Runtime Library Exception.
	* testsuite/24_iterators/range_generators/except.cc: Drop GCC
	Runtime Library Exception.
	* testsuite/24_iterators/range_generators/subrange.cc: Drop GCC
	Runtime Library Exception.
	* testsuite/24_iterators/range_generators/synopsis.cc: Drop GCC
	Runtime Library Exception.
	* testsuite/24_iterators/range_generators/iter_deref_return.cc:
	Drop GCC Runtime Library Exception from the "You should have
	received a copy" paragraph.

2024-03-27  Matthias Kretz  <m.kretz@gsi.de>

	* include/experimental/bits/simd_x86.h (_S_masked_unary):
	Cast inputs < 16 bytes to 16 byte vectors before calling the
	right subtraction builtin. Before returning, truncate to the
	return vector type.

2024-03-27  Matthias Kretz  <m.kretz@gsi.de>

	* include/experimental/bits/simd_x86.h (_S_masked_unary): Call
	the 4- and 8-byte variants of __builtin_ia32_subp[ds] without
	rounding direction argument.

2024-03-27  Srinivas Yadav Singanaboina  <vasu.srinivasvasu.14@gmail.com>

	* include/Makefile.am: Add simd_sve.h.
	* include/Makefile.in: Add simd_sve.h.
	* include/experimental/bits/simd.h: Add new SveAbi.
	* include/experimental/bits/simd_builtin.h: Use
	__no_sve_deduce_t to support existing Neon Abi.
	* include/experimental/bits/simd_converter.h: Convert
	sequentially when sve is available.
	* include/experimental/bits/simd_detail.h: Define sve
	specific macro.
	* include/experimental/bits/simd_math.h: Fallback frexp
	to execute sequntially when sve is available, to handle
	fixed_size_simd return type that always uses sve.
	* include/experimental/simd: Include bits/simd_sve.h.
	* testsuite/experimental/simd/tests/bits/main.h: Enable
	testing for sve128, sve256, sve512.
	* include/experimental/bits/simd_sve.h: New file.

2024-03-26  Arsen Arsenović  <arsen@aarsen.me>

	* include/std/generator (generator::_Iterator::operator*): Fix
	return type.
	* testsuite/24_iterators/range_generators/iter_deref_return.cc:
	New test.

2024-03-26  Arsen Arsenović  <arsen@aarsen.me>

	* include/std/generator: Fix _V badname.

2024-03-26  Jonathan Wakely  <jwakely@redhat.com>

	* testsuite/19_diagnostics/stacktrace/current.cc: Check for
	__cpp_lib_stacktrace instead of check for stacktrace ET.
	* testsuite/19_diagnostics/stacktrace/entry.cc: Likewise.
	* testsuite/19_diagnostics/stacktrace/hash.cc: Likewise.
	* testsuite/19_diagnostics/stacktrace/output.cc: Likewise.
	* testsuite/19_diagnostics/stacktrace/stacktrace.cc: Likewise.
	* testsuite/19_diagnostics/stacktrace/synopsis.cc: Likewise.
	* testsuite/19_diagnostics/stacktrace/version.cc: Likewise.
	* testsuite/23_containers/vector/debug/assign4_backtrace_neg.cc:
	Likewise.
	* testsuite/lib/libstdc++.exp (check_effective_target_stacktrace):
	Remove.

2024-03-26  Jonathan Wakely  <jwakely@redhat.com>

	* testsuite/lib/dg-options.exp (dg-require-cpp-feature-test):
	New proc.
	* testsuite/lib/libstdc++.exp (check_v3_target_cpp_feature_test):
	New proc.
	* testsuite/std/text_encoding/cons.cc: Use new directive to skip
	the test if the __cpp_lib_text_encoding feature test macro is
	not defined.
	* testsuite/std/text_encoding/requirements.cc: Likewise.

2024-03-25  Jonathan Wakely  <jwakely@redhat.com>

	* testsuite/std/text_encoding/requirements.cc: #undef the
	correct macro.

2024-03-23  Jonathan Wakely  <jwakely@redhat.com>

	* include/std/format (formatter): Disable specializations that
	would allow sequences of narrow characters to be formatted as
	wchar_t without conversion, as per LWG 3944.
	* testsuite/std/format/formatter/lwg3944.cc: New test.

2024-03-23  Jonathan Wakely  <jwakely@redhat.com>

	* include/bits/utility.h (__is_in_place_index_v): New variable
	template.
	* include/std/variant (__not_in_place_tag): Define in terms of
	variable templates not a class template.

2024-03-23  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/114400
	* include/std/string_view (operator==): Use std::type_identity_t
	in C++20 instead of our own __type_identity_t.

2024-03-22  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/114401
	* include/bits/hashtable.h (_Hashtable::_M_reinsert_node): Call
	release() on node handle instead of just zeroing its pointer.
	(_Hashtable::_M_reinsert_node_multi): Likewise.
	(_Hashtable::_M_merge_unique): Likewise.
	(_Hashtable::_M_merge_multi): Likewise.
	* include/bits/node_handle.h (_Node_handle_common::release()):
	New member function.
	(_Node_handle_common::_Optional_alloc::_M_empty): Remove
	unnecessary union member.
	(_Node_handle_common): Declare _Hashtable as a friend.
	* include/bits/stl_tree.h (_Rb_tree::_M_reinsert_node_unique):
	Call release() on node handle instead of just zeroing its
	pointer.
	(_Rb_tree::_M_reinsert_node_equal): Likewise.
	(_Rb_tree::_M_reinsert_node_hint_unique): Likewise.
	(_Rb_tree::_M_reinsert_node_hint_equal): Likewise.
	* testsuite/23_containers/multiset/modifiers/114401.cc: New test.
	* testsuite/23_containers/set/modifiers/114401.cc: New test.
	* testsuite/23_containers/unordered_multiset/modifiers/114401.cc: New test.
	* testsuite/23_containers/unordered_set/modifiers/114401.cc: New test.

2024-03-22  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/113841
	* include/bits/allocator.h (allocator<cv T>): Add default
	constructor to partial specializations for cv-qualified types.
	* include/bits/stl_vector.h (_Vector_impl::_Vector_impl()):
	Constrain so that it's only present if the allocator is default
	constructible.
	* include/bits/stl_bvector.h (_Bvector_impl::_Bvector_impl()):
	Likewise.
	* testsuite/23_containers/vector/cons/113841.cc: New test.

2024-03-22  Jonathan Wakely  <jwakely@redhat.com>

	* include/bits/stl_construct.h (destroy_at, construct_at): Guard
	with feature test macros instead of just __cplusplus.

2024-03-22  Jonathan Wakely  <jwakely@redhat.com>

	* include/bits/version.def (generator, tuple_like): Move earlier
	in the file.
	* include/bits/version.h: Regenerate.

2024-03-22  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/114394
	* include/std/functional (bind): Use __invoke_result_t instead
	of result_of::type.
	* include/std/type_traits (__invoke_result_t): New alias
	template.
	* testsuite/20_util/bind/ref_neg.cc: Adjust prune pattern.

2024-03-20  François Dumont  <fdumont@gcc.gnu.org>

	* include/bits/version.def (null_iterators): Remove extra_cond.
	* include/bits/version.h: Regenerate.

2024-03-19  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/114359
	* include/bits/random.tcc (binomial_distribution::param_type):
	Ensure arithmetic is done as type double.
	* testsuite/26_numerics/random/binomial_distribution/114359.cc: New test.

2024-03-19  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/101228
	* include/pstl/parallel_backend_tbb.h (TBB_SUPPRESS_DEPRECATED_MESSAGES):
	Define before including <tbb/task.h> then undef afterwards.

2024-03-19  Jonathan Wakely  <jwakely@redhat.com>

	* include/Makefile.am [MAINTAINER_MODE]: Add target to
	automatically update <bits/version.h>.
	* include/Makefile.in: Regenerate.

2024-03-19  Jonathan Wakely  <jwakely@redhat.com>

	* doc/xml/manual/build_hacking.xml: Document generated files.
	Update list of convenience libraries and sub-directories under
	the src directory.
	* doc/html/*: Regenerate.

2024-03-19  Jonathan Wakely  <jwakely@redhat.com>

	* include/bits/text_encoding-data.h: Regenerate.
	* include/bits/unicode-data.h: Regenerate.
	* scripts/gen_text_encoding_data.py: Fix header of generated
	file to name the correct script.

2024-03-19  Jonathan Wakely  <jwakely@redhat.com>

	* testsuite/util/pstl/test_utils.h: Fix typos in comments.

2024-03-19  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/114367
	* include/bits/stl_bvector.h (_M_allocate): Use allocator's
	construct function to begin lifetime of words.

2024-03-19  Iain Sandoe  <iain@sandoe.co.uk>

	* testsuite/lib/dg-options.exp (atomic_link_flags): Emit a -B
	option for the path to the uninstalled libatomic.

2024-03-19  Iain Sandoe  <iain@sandoe.co.uk>

	* testsuite/lib/libstdc++.exp (v3_target_compile): Instead of
	/dev/null, use a temporary file for test executables on Darwin.

2024-03-18  François Dumont  <fdumont@gcc.gnu.org>

	* include/debug/safe_iterator.tcc (_Safe_iterator<>::_M_can_advance):
	Accept 0 offset advance on value-initialized iterator.
	* testsuite/23_containers/vector/debug/n3644.cc: New test case.

2024-03-18  François Dumont  <fdumont@gcc.gnu.org>

	* include/debug/safe_local_iterator.tcc
	(_Safe_local_iterator::_M_valid_range): Add _M_value_initialized and
	_M_singular checks.
	* testsuite/23_containers/unordered_set/debug/114316.cc: New test case.

2024-03-17  François Dumont  <fdumont@gcc.gnu.org>

	PR libstdc++/114316
	* include/debug/safe_iterator.tcc (_Safe_iterator<>::_M_valid_range):
	First check if both iterators are value-initialized before checking if
	singular.
	* testsuite/23_containers/set/debug/114316.cc: New test case.
	* testsuite/23_containers/vector/debug/114316.cc: New test case.

2024-03-14  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/114325
	* include/std/format (_Scanner::_M_scan): Pass correct length to
	__to_chars_10_impl.
	* testsuite/std/format/functions/format.cc: Check negative
	integers with empty format-spec.

2024-03-14  Jonathan Wakely  <jwakely@redhat.com>

	* include/bits/stl_algo.h (find_end, all_of, none_of, any_of)
	(find_if_not, is_partitioned, partition_point, remove)
	(remove_if, unique, lower_bound, upper_bound, equal_range)
	(binary_search, includes, is_sorted, is_sorted_until, minmax)
	(minmax_element, is_permutation, clamp, find_if, find_first_of)
	(adjacent_find, count, count_if, search, search_n, min_element)
	(max_element): Add nodiscard attribute.
	* include/bits/stl_algobase.h (min, max, lower_bound, equal)
	(lexicographical_compare, lexicographical_compare_three_way)
	(mismatch): Likewise.
	* include/bits/stl_heap.h (is_heap, is_heap_until): Likewise.
	* testsuite/25_algorithms/equal/debug/1_neg.cc: Add dg-warning.
	* testsuite/25_algorithms/equal/debug/2_neg.cc: Likewise.
	* testsuite/25_algorithms/equal/debug/3_neg.cc: Likewise.
	* testsuite/25_algorithms/find_first_of/concept_check_1.cc:
	Likewise.
	* testsuite/25_algorithms/is_permutation/2.cc: Likewise.
	* testsuite/25_algorithms/lexicographical_compare/71545.cc:
	Likewise.
	* testsuite/25_algorithms/lower_bound/33613.cc: Likewise.
	* testsuite/25_algorithms/lower_bound/debug/irreflexive.cc:
	Likewise.
	* testsuite/25_algorithms/lower_bound/debug/partitioned_neg.cc:
	Likewise.
	* testsuite/25_algorithms/lower_bound/debug/partitioned_pred_neg.cc:
	Likewise.
	* testsuite/25_algorithms/minmax/3.cc: Likewise.
	* testsuite/25_algorithms/search/78346.cc: Likewise.
	* testsuite/25_algorithms/search_n/58358.cc: Likewise.
	* testsuite/25_algorithms/unique/1.cc: Likewise.
	* testsuite/25_algorithms/unique/11480.cc: Likewise.
	* testsuite/25_algorithms/upper_bound/33613.cc: Likewise.
	* testsuite/25_algorithms/upper_bound/debug/partitioned_neg.cc:
	Likewise.
	* testsuite/25_algorithms/upper_bound/debug/partitioned_pred_neg.cc:
	Likewise.
	* testsuite/ext/concept_checks.cc: Likewise.
	* testsuite/ext/is_heap/47709.cc: Likewise.
	* testsuite/ext/is_sorted/cxx0x.cc: Likewise.

2024-03-14  xndcn  <xndchn@gmail.com>

	* include/bits/atomic_base.h (__atomic_float::__atomic_float(Fp)):
	Clear padding.
	* testsuite/29_atomics/atomic_float/compare_exchange_padding.cc:
	New test.

2024-03-14  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/66146
	* doc/xml/manual/status_cxx2011.xml: Remove mention of Linux in
	note about std::call_once.
	* doc/xml/manual/status_cxx2014.xml: Likewise.
	* doc/xml/manual/status_cxx2017.xml: Likewise.
	* doc/html/manual/status.html: Regenerate.

2024-03-14  Jonathan Wakely  <jwakely@redhat.com>

	* doc/xml/manual/status_cxx2023.xml: Update C++23 status table.
	* doc/html/manual/status.html: Regenerate.
	* include/bits/version.def: Fix typo in comment.

2024-03-13  Jonathan Wakely  <jwakely@redhat.com>

	* testsuite/libstdc++-prettyprinters/cxx11.cc: Move custom_cat
	to namespace scope.

2024-03-13  Jonathan Wakely  <jwakely@redhat.com>

	* doc/xml/manual/debug.xml: Improve docs on debug builds and
	using ASan. Mention _GLIBCXX_ASSERTIONS. Reorder sections to put
	the most relevant ones first.
	* doc/xml/manual/using.xml: Add comma.
	* doc/html/*: Regenerate.

2024-03-13  Jonathan Wakely  <jwakely@redhat.com>

	* doc/xml/manual/debug.xml: Document that concept checking might
	be removed in future.
	* doc/xml/manual/extensions.xml: Likewise.

2024-03-09  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/114240
	* include/bits/chrono_io.h (_Parser::operator()): Assume
	hours(0) for a time_point, so that a time is not required
	to be present.
	* testsuite/std/time/parse/114240.cc: New test.

2024-03-09  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/114279
	* include/bits/chrono_io.h (_Parser::_M_is_leap_second): New
	data member.
	(_Parser::_M_reserved): Reserve padding bits for future use.
	(_Parser::operator()): Set _M_is_leap_second if %S reads 60s.
	(from_stream): Only allow _M_is_leap_second for utc_time and
	local_time. Adjust arithmetic for utc_time so that leap seconds
	are preserved. Use time_point_cast to convert to a possibly
	lower-precision result type.
	* testsuite/std/time/parse.cc: Move to ...
	* testsuite/std/time/parse/parse.cc: ... here.
	* testsuite/std/time/parse/114279.cc: New test.

2024-03-07  Jonathan Wakely  <jwakely@redhat.com>

	* include/bits/chrono_io.h (_Parser::operator()): Use
	std::from_chars to parse fractional seconds.

2024-03-07  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/114244
	* include/bits/chrono_io.h (_Parser::operator()): Remove
	redundant uses of duration_cast. Use chrono::round to convert
	long double value to durations with integer representations.
	Check represenation type when deciding whether to skip parsing
	fractional seconds.
	* testsuite/20_util/duration/114244.cc: New test.
	* testsuite/20_util/duration/io.cc: Check that a floating-point
	duration with ratio<1> precision can be parsed.

2024-03-07  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/114103
	* include/bits/version.def (atomic_lock_free_type_aliases): Add
	extra_cond to check for at least one always-lock-free type.
	* include/bits/version.h: Regenerate.
	* include/std/atomic (atomic_signed_lock_free)
	(atomic_unsigned_lock_free): Only use always-lock-free types.
	* src/c++20/tzdb.cc (time_zone::_Impl::RulesCounter): Don't use
	atomic counter if lock-free aliases aren't available.
	* testsuite/29_atomics/atomic/lock_free_aliases.cc: XFAIL for
	targets without lock-free word-size compare_exchange.

2024-03-07  Jonathan Wakely  <jwakely@redhat.com>

	* include/std/chrono (__get_leap_second_info): Update expiry
	time for hardcoded list of leap seconds.
	* testsuite/std/time/tzdb/leap_seconds.cc: Update comment.

2024-03-07  Jonathan Wakely  <jwakely@redhat.com>

	* testsuite/23_containers/deque/allocator/default_init.cc: Use
	std::memset instead of __builtin_memset.
	* testsuite/23_containers/forward_list/allocator/default_init.cc:
	Likewise.
	* testsuite/23_containers/list/allocator/default_init.cc:
	Likewise.
	* testsuite/23_containers/map/allocator/default_init.cc:
	Likewise.
	* testsuite/23_containers/set/allocator/default_init.cc:
	Likewise.
	* testsuite/23_containers/unordered_map/allocator/default_init.cc:
	Likewise.
	* testsuite/23_containers/unordered_set/allocator/default_init.cc:
	Likewise.
	* testsuite/23_containers/vector/allocator/default_init.cc:
	Likewise.
	* testsuite/23_containers/vector/bool/allocator/default_init.cc:
	Likewise.
	* testsuite/29_atomics/atomic/compare_exchange_padding.cc:
	Likewise.
	* testsuite/util/atomic/wait_notify_util.h: Likewise.

2024-03-07  Jonathan Wakely  <jwakely@redhat.com>

	* include/std/format (_Arg_store::_S_make_elt): Add two
	static_assert checks to give more user-friendly error messages.
	* testsuite/lib/prune.exp (libstdc++-dg-prune): Prune another
	form of "in requirements with" note.
	* testsuite/std/format/arguments/args_neg.cc: Check for
	user-friendly diagnostics for non-formattable types.
	* testsuite/std/format/string_neg.cc: Likewise.

2024-03-04  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/114147
	* include/std/tuple (tuple::tuple(allocator_arg_t, const Alloc&)):
	Add missing overload of allocator-extended default constructor.
	(tuple<T1,T2>::tuple(allocator_arg_t, const Alloc&)): Likewise.
	* testsuite/20_util/tuple/cons/114147.cc: New test.

2024-02-29  Jonathan Wakely  <jwakely@redhat.com>

	* include/std/format (basic_format_arg::handle::__maybe_const_t):
	Fix condition to check if const type is formattable.
	(basic_format_arg::handle::handle(T&)): Remove redundant
	static_assert.
	* testsuite/std/format/formatter/basic.cc: New test.

2024-02-29  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/113960
	* include/bits/stl_algobase.h (__is_byte_iter): Replace with ...
	(__memcmp_ordered_with): New concept.
	(lexicographical_compare_three_way): Use __memcmp_ordered_with
	instead of __is_byte_iter. Use correct length for memcmp.
	* testsuite/25_algorithms/lexicographical_compare_three_way/113960.cc:
	New test.

2024-02-28  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/114152
	* include/experimental/scope (scope_exit scope_fail): Make
	destructor unconditionally noexcept.
	(scope_sucess): Fix noexcept-specifier.
	* testsuite/experimental/scopeguard/114152.cc: New test.

2024-02-28  Jonathan Wakely  <jwakely@redhat.com>

	* doc/xml/manual/appendix_contributing.xml: Change URLs to use
	https.
	* doc/html/manual/*: Regenerate.

2024-02-28  Jonathan Wakely  <jwakely@redhat.com>

	* doc/xml/manual/appendix_contributing.xml: Replace outdated
	info on ChangeLog entries.
	* doc/html/manual/appendix_contributing.html: Regenerate.

2024-02-28  Jonathan Wakely  <jwakely@redhat.com>

	* include/bits/stl_bvector.h (vector<bool, A>::at): Add
	nodiscard.
	* include/bits/stl_vector.h (vector<T, A>::at): Likewise.
	(operator==, operator<=>, operator<, operator!=, operator>)
	(operator<=, operator>=): Likewise.
	* include/debug/vector (operator==, operator<=>, operator<)
	(operator!=, operator>, operator<=, operator>=): Likewise.
	* testsuite/23_containers/vector/nodiscard.cc: New test.

2024-02-28  Jonathan Wakely  <jwakely@redhat.com>

	* include/bits/atomic_base.h (operator|, operator&): Add
	noexcept.
	* include/bits/fs_fwd.h (operator&, operator|, operator^)
	(operator~): Add nodiscard to overloads for copy_options, perms,
	perm_options, and directory_options.
	* include/bits/ios_base.h (operator&, operator|, operator^)
	(operator~): Add nodiscard and noexcept to overloads for
	_Ios_Fmtflags, _Ios_Openmode, and _Ios_Iostate.
	(operator|=, operator&=, operator^=): Add constexpr for C++14.
	* include/bits/regex_constants.h (operator&, operator|, operator^)
	(operator~): Add nodiscard and noexcept to overloads for
	syntax_option_type and match_flag_type.
	(operator|=, operator&=, operator^=): Add noexcept.
	* include/std/charconv (operator&, operator|, operator^)
	(operator~): Add nodiscard to overloads for chars_format.
	* include/std/future (operator&, operator|, operator^)
	(operator~): Add nodiscard for overloads for launch.
	(operator&=, operator|=, operator^=): Add constexpr for C++14.
	* include/experimental/bits/fs_fwd.h  (operator&, operator|)
	(operator^, operator~): Add nodiscard to overloads for
	copy_options, perms, and directory_options.
	* testsuite/27_io/ios_base/types/fmtflags/bitmask_operators.cc:
	Add dg-warning for nodiscard warnings.
	* testsuite/27_io/ios_base/types/iostate/bitmask_operators.cc:
	Likewise.
	* testsuite/27_io/ios_base/types/openmode/bitmask_operators.cc:
	Likewise.
	* testsuite/27_io/filesystem/operations/bitmask_types.cc:
	New test.

2024-02-28  Jonathan Wakely  <jwakely@redhat.com>

	* testsuite/27_io/basic_ostream/print/1.cc: Check error
	handling.
	* testsuite/27_io/print/1.cc: Likewise.

2024-02-28  Jonathan Wakely  <jwakely@redhat.com>

	* include/std/ostream (vprint_unicode) [__CYGWIN__]: Use POSIX
	code path for Cygwin instead of Windows.
	* include/std/print (vprint_unicode) [__CYGWIN__]: Likewise.
	* testsuite/27_io/basic_ostream/print/1.cc: Only add -lstdc++exp
	for *-*-mingw* targets.
	* testsuite/27_io/print/1.cc: Likewise.

2024-02-28  Jonathan Wakely  <jwakely@redhat.com>

	* include/bits/alloc_traits.h: Include <bits/stl_iterator.h> for
	__make_move_if_noexcept_iterator.

2024-02-28  Jonathan Wakely  <jwakely@redhat.com>

	* include/std/stacktrace: Add nodiscard attribute to all
	functions without side effects.

2024-02-20  François Dumont  <fdumont@gcc.gnu.org>

	* include/bits/stl_algobase.h (std::__niter_wrap): Add a call to
	std::__niter_base on res iterator.

2024-02-19  Iain Sandoe  <iain@sandoe.co.uk>
	    Jonathan Wakely  <jwakely@redhat.com>

	PR target/112397
	* configure: Regenerate.
	* configure.ac: Detect if we are building for Darwin.
	* libsupc++/Makefile.am: If we are building for Darwin, then
	suppress hot/cold partitioning for the array allocators.
	* libsupc++/Makefile.in: Regenerated.

2024-02-17  François Dumont  <fdumont@gcc.gnu.org>

	* include/bits/stl_algobase.h (std::__niter_base): Redefine the overload
	definitions for __gnu_debug::_Safe_iterator.
	* include/debug/safe_iterator.tcc (std::__niter_base): Adapt declarations.

2024-02-16  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/87744
	PR libstdc++/113961
	* testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
	line number.

2024-02-16  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/87744
	PR libstdc++/113931
	* testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
	line number.

2024-02-16  Jonathan Wakely  <jwakely@redhat.com>

	* doc/xml/manual/debug_mode.xml: Update docs for backtraces.
	* doc/html/manual/debug_mode_using.html: Regenerate.

2024-02-16  Jonathan Wakely  <jwakely@redhat.com>

	* doc/xml/manual/test.xml: Fix spelling of <envar> elements.
	* doc/html/manual/test.html: Regenerate.

2024-02-15  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/113806
	* include/std/bitset (bitset::operator>>=): Remove redundant
	call to _M_do_sanitize.

2024-02-15  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/113807
	* include/std/bitset (bitset::set()): Use memset instead of a
	loop over the individual words.

2024-02-15  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/113811
	* include/bits/stl_algo.h (__rotate): Use unsigned values for
	division.

2024-02-15  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/99117
	* include/std/valarray (valarray::operator=(const _Expr&)):
	Use loop to copy instead of __valarray_copy with _Array.
	* testsuite/26_numerics/valarray/99117.cc: New test.

2024-02-15  Jonathan Wakely  <jwakely@redhat.com>

	* src/c++20/tzdata.zi: Import new file from 2024a release.
	* src/c++20/tzdb.cc (tzdb_list::_Node::_S_read_leap_seconds)
	Update expiry date for leap seconds list.

2024-02-15  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/87744
	* include/bits/random.h [!__SIZEOF_INT128__] (_Select_uint_least_t):
	Define specialization for 64-bit generators with
	non-power-of-two modulus and large constants.
	(__mod): Use if constexpr unconditionally.
	* testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
	line number.
	* testsuite/26_numerics/random/linear_congruential_engine/87744.cc:
	New test.

2024-02-14  Gerald Pfeifer  <gerald@pfeifer.com>

	* doc/xml/manual/status_cxx2023.xml: Fix C++ item p2442 to be
	version 1.
	* doc/html/manual/status.html: Regenerate.

2024-02-12  Paul Keir  <paul.keir@uws.ac.uk>

	PR libstdc++/113294
	* include/bits/basic_string.h (basic_string::operator=): Use
	_M_use_local_data() instead of _M_local_buf on the moved-from
	string.
	* testsuite/21_strings/basic_string/modifiers/constexpr.cc
	(test_move): New test.

2024-02-09  Ken Matsui  <kmatsui@gcc.gnu.org>

	* include/bits/c++config (_GLIBCXX_HAVE_BUILTIN_IS_SAME):
	Removed.
	* include/std/type_traits (is_same): Use
	_GLIBCXX_USE_BUILTIN_TRAIT instead of
	_GLIBCXX_HAVE_BUILTIN_IS_SAME.
	(is_same_v): Likewise.

2024-02-08  Jonathan Wakely  <jwakely@redhat.com>

	* include/bits/shared_ptr_atomic.h: Fix typo in comment.

2024-02-08  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/100147
	* include/bits/gslice.h (operator=): Add comment about lack of
	self-assignment check.

2024-02-08  Jonathan Wakely  <jwakely@redhat.com>

	* include/tr2/type_traits (bases, direct_bases): Use
	__has_builtin to check if required built-ins are supported.

2024-02-07  Patrick Palka  <ppalka@redhat.com>

	PR testsuite/113710
	PR c++/113814
	* include/bits/stl_pair.h (tuple_element): Add forward
	declaration of the partial specialization for tuple.

2024-02-06  Torbjörn SVENSSON  <torbjorn.svensson@foss.st.com>

	* testsuite/lib/libstdc++.exp: Use "nul" for Windows, "/dev/null"
	for other environments.

2024-02-04  Jonathan Wakely  <jwakely@redhat.com>

	* include/std/format (__format::_Spec::_M_reserved): Define new
	bit-field members to reserve padding bits for future extensions.

2024-02-04  Jonathan Wakely  <jwakely@redhat.com>

	* src/experimental/Makefile.am: Use libstdc++fsconvenience.a
	instead of libstdc++fs.a.
	* src/experimental/Makefile.in: Regenerate.
	* src/filesystem/Makefile.am: Build libstdc++fsconvenience.a as
	well.
	* src/filesystem/Makefile.in: Regenerate.

2024-02-04  Jonathan Wakely  <jwakely@redhat.com>

	* include/bits/text_encoding-data.h: Regenerate.
	* include/bits/unicode-data.h: Regenerate.
	* scripts/gen_text_encoding_data.py: Add copyright and license
	text to the output.

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.
