Daily bump.

[thirdparty/gcc.git] / libstdc++-v3 / ChangeLog

2023-02-18  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/xml/faq.xml: Switch two links to www.open-std.org to https.
        * doc/html/faq.html: Regenerate.

2023-02-16  Matthias Kretz  <m.kretz@gsi.de>

        * include/experimental/bits/simd_math.h (__hypot): Bitcasting
        between scalars requires the __bit_cast helper function instead
        of simd_bit_cast.

2023-02-16  Matthias Kretz  <m.kretz@gsi.de>

        * include/experimental/bits/simd_x86.h
        (_SimdImplX86::_S_not_equal_to, _SimdImplX86::_S_less)
        (_SimdImplX86::_S_less_equal): Do not call
        __builtin_is_constant_evaluated in constexpr-if.

2023-02-16  Matthias Kretz  <m.kretz@gsi.de>

        * testsuite/experimental/simd/tests/bits/verify.h
        (verify::verify): Use %zx for size_t in format string.

2023-02-16  Matthias Kretz  <m.kretz@gsi.de>

        * testsuite/experimental/simd/generate_makefile.sh: Generate and
        pre-compile pch.h, which includes all headers that do not depend
        on command-line macros.
        * testsuite/experimental/simd/tests/bits/main.h: New file.
        (iterate_abis, main): Moved from verify.h.
        * testsuite/experimental/simd/tests/bits/verify.h
        (iterate_abis, main): Moved to main.h.
        * testsuite/experimental/simd/tests/bits/conversions.h: Add
        include guard.
        (genHalfBits): Simplify.
        * testsuite/experimental/simd/tests/bits/make_vec.h: Add include
        guard.
        (make_alternating_mask): Moved from mask_loadstore.
        * testsuite/experimental/simd/tests/bits/mathreference.h: Add
        include guard.
        * testsuite/experimental/simd/tests/bits/test_values.h: Ditto.
        * testsuite/experimental/simd/tests/mask_loadstore.cc
        (make_mask, make_alternating_mask): Removed.
        * testsuite/experimental/simd/tests/mask_reductions.cc: Ditto.
        * testsuite/experimental/simd/tests/operators.cc (genHalfBits):
        Removed.
        * testsuite/experimental/simd/tests/abs.cc: Only include
        bits/main.h.
        Ditto.
        * testsuite/experimental/simd/tests/algorithms.cc: Ditto.
        * testsuite/experimental/simd/tests/broadcast.cc: Ditto.
        * testsuite/experimental/simd/tests/casts.cc: Ditto.
        * testsuite/experimental/simd/tests/fpclassify.cc: Ditto.
        * testsuite/experimental/simd/tests/frexp.cc: Ditto.
        * testsuite/experimental/simd/tests/generator.cc: Ditto.
        * testsuite/experimental/simd/tests/hypot3_fma.cc: Ditto.
        * testsuite/experimental/simd/tests/integer_operators.cc: Ditto.
        * testsuite/experimental/simd/tests/ldexp_scalbn_scalbln_modf.cc:
        * testsuite/experimental/simd/tests/loadstore.cc: Ditto.
        * testsuite/experimental/simd/tests/logarithm.cc: Ditto.
        * testsuite/experimental/simd/tests/mask_broadcast.cc: Ditto.
        * testsuite/experimental/simd/tests/mask_conversions.cc: Ditto.
        * testsuite/experimental/simd/tests/mask_implicit_cvt.cc: Ditto.
        * testsuite/experimental/simd/tests/mask_operator_cvt.cc: Ditto.
        * testsuite/experimental/simd/tests/mask_operators.cc: Ditto.
        * testsuite/experimental/simd/tests/math_1arg.cc: Ditto.
        * testsuite/experimental/simd/tests/math_2arg.cc: Ditto.
        * testsuite/experimental/simd/tests/operator_cvt.cc: Ditto.
        * testsuite/experimental/simd/tests/reductions.cc: Ditto.
        * testsuite/experimental/simd/tests/remqo.cc: Ditto.
        * testsuite/experimental/simd/tests/simd.cc: Ditto.
        * testsuite/experimental/simd/tests/sincos.cc: Ditto.
        * testsuite/experimental/simd/tests/split_concat.cc: Ditto.
        * testsuite/experimental/simd/tests/splits.cc: Ditto.
        * testsuite/experimental/simd/tests/trigonometric.cc: Ditto.
        * testsuite/experimental/simd/tests/trunc_ceil_floor.cc: Ditto.
        * testsuite/experimental/simd/tests/where.cc: Ditto.

2023-02-16  Matthias Kretz  <m.kretz@gsi.de>

        * testsuite/experimental/simd/README.md: Document the timeout
        and timeout-factor directives. Minor typo fixed.

2023-02-16  Matthias Kretz  <m.kretz@gsi.de>

        PR libstdc++/108030
        * include/experimental/bits/simd_detail.h: Define
        _GLIBCXX_SIMD_ALWAYS_INLINE_LAMBDA.
        * include/experimental/bits/simd.h: Annotate lambdas with
        _GLIBCXX_SIMD_ALWAYS_INLINE_LAMBDA.
        * include/experimental/bits/simd_builtin.h: Ditto.
        * include/experimental/bits/simd_converter.h: Ditto.
        * include/experimental/bits/simd_fixed_size.h: Ditto.
        * include/experimental/bits/simd_math.h: Ditto.
        * include/experimental/bits/simd_neon.h: Ditto.
        * include/experimental/bits/simd_x86.h: Ditto.

2023-02-16  Matthias Kretz  <m.kretz@gsi.de>

        * include/experimental/bits/simd.h
        (_SimdWrapper::_M_is_constprop_none_of)
        (_SimdWrapper::_M_is_constprop_all_of): Return false unless the
        computed result still satisfies __builtin_constant_p.

2023-02-16  Jonathan Wakely  <jwakely@redhat.com>

        * testsuite/std/format/arguments/lwg3810.cc: Replace UTF-8
        ellipsis character.

2023-02-16  Jonathan Wakely  <jwakely@redhat.com>

        * include/Makefile.am: Add new header.
        * include/Makefile.in: Regenerate.
        * include/experimental/synchronized_value: New file.
        * testsuite/experimental/synchronized_value.cc: New test.

2023-02-16  Jonathan Wakely  <jwakely@redhat.com>

        * include/experimental/optional: Fix header name in comment.

2023-02-16  Jonathan Wakely  <jwakely@redhat.com>

        * include/std/format (__format::_Arg_store): New class template.
        (basic_format_args): Remove nested type _Store and add deduction
        guide from _Arg_store.
        (basic_format_arg, make_format_args): Adjust.
        * testsuite/std/format/arguments/lwg3810.cc: New test.

2023-02-16  Jonathan Wakely  <jwakely@redhat.com>

        * include/bits/stl_pair.h (pair) [C++20]: Add non-dangling
        constraints to constructors and add deleted overloads for the
        dangling cases, as per P2255R2.
        (pair) [!C++20 && _GLIBCXX_DEBUG]: Add static assertions to
        make dangling cases ill-formed.
        * testsuite/20_util/pair/dangling_ref.cc: New test.

2023-02-16  Jonathan Wakely  <jwakely@redhat.com>

        * testsuite/17_intro/names_pstl.cc: Require et tbb_backend.

2023-02-16  Jonathan Wakely  <jwakely@redhat.com>

        * include/ext/throw_allocator.h: Use reserved names for
        parameters.

2023-02-16  Jonathan Wakely  <jwakely@redhat.com>

        * testsuite/17_intro/names_pstl.cc: Add space after effective
        target name.

2023-02-16  Jonathan Wakely  <jwakely@redhat.com>

        * include/pstl/algorithm_fwd.h (__pattern_search_n)
        (__brick_unique_copy, __brick_adjacent_find)
        (__brick_generate_n, __pattern_generate_n): Use reserved names
        for parameters.
        * include/pstl/algorithm_impl.h (__brick_unique_copy)
        (__pattern_reverse, __brick_generate_n): Likewise.
        * include/pstl/execution_impl.h (__prefer_unsequenced_tag)
        (__prefer_parallel_tag): Likewise.
        * include/pstl/glue_algorithm_impl.h (transform): Likewise.
        * include/pstl/glue_numeric_defs.h (adjacent_difference):
        Likewise.
        * include/pstl/numeric_impl.h (__brick_adjacent_difference):
        Likewise.
        * include/pstl/parallel_backend_tbb.h (__merge_func): Likewise.
        * include/pstl/unseq_backend_simd.h (_Combiner)
        (__simd_min_element, __simd_minmax_element): Likewise.
        * testsuite/17_intro/names_pstl.cc: New test.

2023-02-16  Jonathan Wakely  <jwakely@redhat.com>

        * include/bits/fs_ops.h (create_directory): Use reserved name
        for parameter.
        * include/bits/ranges_algo.h (__contains_subrange_fn):
        Likewise.
        * include/bits/regex_automaton.h (_State_base::_M_print):
        Likewise.
        * include/bits/regex_automaton.tcc(_State_base::_M_print):
        Likewise.
        * include/bits/regex_scanner.tcc(_Scanner::_M_print): Likewise.
        * include/experimental/bits/fs_ops.h (create_directory):
        Likewise.
        * include/std/mutex (timed_mutex::_M_clocklock): Likewise.
        (recursive_timed_mutex:_M_clocklock): Likewise.
        * include/std/tuple (basic_common_reference): Likewise.
        * libsupc++/cxxabi_init_exception.h
        (__cxa_init_primary_exception): Likewise.
        * testsuite/17_intro/names.cc: Add checks.

2023-02-14  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/xml/manual/status_cxx2017.xml: Update an open-std.org link
        to www.open-std.org and https.
        * doc/html/manual/status.html: Regenerate.

2023-02-14  Thomas W Rodgers  <rodgert@twrodgers.com>

        PR libstdc++/103934
        * include/std/atomic (atomic_flag_wait): Add.
        (atomic_flag_wait_explicit): Add.
        (atomic_flag_notify): Add.
        (atomic_flag_notify_explicit): Add.
        * testsuite/29_atomics/atomic_flag/wait_notify/1.cc:
        Add test case to cover missing atomic_flag free functions.

2023-02-14  Thomas W Rodgers  <rodgert@twrodgers.com>

        PR libstdc++/103934
        * include/std/atomic (atomic_flag_test): Add.
        (atomic_flag_test_explicit): Add.
        * testsuite/29_atomics/atomic_flag/test/explicit.cc: Add
        test case to cover missing atomic_flag free functions.
        * testsuite/29_atomics/atomic_flag/test/implicit.cc:
        Likewise.

2023-02-13  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/xml/manual/policy_data_structures_biblio.xml: Adjust
        "The Component Object Model" reference.
        * doc/html/manual/policy_data_structures.html: Regenerate.

2023-02-12  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/xml/manual/containers.xml: Tweak a link to N1780
        (C++ standard).
        * doc/html/manual/associative.html: Regenerate.

2023-02-12  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/xml/manual/ctype.xml: Change www.unix.org to unix.org.
        * doc/html/manual/facets.html: Regenerate.

2023-02-11  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/xml/manual/policy_data_structures_biblio.xml: Update
        link to "Worst-case efficient priority queues".
        * doc/html/manual/policy_data_structures.html: Regenerate.

2023-02-06  Arsen Arsenović  <arsen@aarsen.me>

        * doc/xml/manual/using.xml: Document newly-freestanding
        headers and the effect of the -ffreestanding flag.
        * doc/xml/manual/status_cxx2023.xml: Document P1642R11 as
        completed.
        * doc/xml/manual/configure.xml: Document that hosted installs
        respect __STDC_HOSTED__.
        * doc/xml/manual/test.xml: Document how to run tests in
        freestanding mode.
        * doc/html/*: Regenerate.

2023-02-06  Jonathan Wakely  <jwakely@redhat.com>

        * include/bits/ranges_algo.h (__find_last_fn): Rename T to _Tp.
        (__find_last_if_fn): Likewise.

2023-02-06  Jonathan Wakely  <jwakely@redhat.com>

        * include/std/type_traits: Add diagnostic pragmas around
        references to deprecated std::aligned_storage and
        std::aligned_union traits.
        * testsuite/20_util/aligned_storage/requirements/alias_decl.cc:
        Add dg-warning for et c++23.
        * testsuite/20_util/aligned_storage/requirements/explicit_instantiation.cc:
        Likewise.
        * testsuite/20_util/aligned_storage/value.cc: Likewise.
        * testsuite/20_util/aligned_union/1.cc: Likewise.
        * testsuite/20_util/aligned_union/requirements/alias_decl.cc:
        Likewise.

2023-02-06  Nathaniel Shead  <nathanieloshead@gmail.com>

        * doc/doxygen/user.cfg.in (PREDEFINED): Add new macros.
        * include/bits/c++config (_GLIBCXX23_DEPRECATED)
        (_GLIBCXX23_DEPRECATED_SUGGEST): New macros.
        * include/std/type_traits (aligned_storage, aligned_union)
        (aligned_storage_t, aligned_union_t): Deprecate for C++23.
        * testsuite/20_util/aligned_storage/deprecated-2b.cc: New test.
        * testsuite/20_util/aligned_union/deprecated-2b.cc: New test.

2023-02-06  Nathaniel Shead  <nathanieloshead@gmail.com>

        * doc/doxygen/user.cfg.in (PREDEFINED): Update macros.
        * include/bits/c++config (_GLIBCXX20_DEPRECATED): Make
        consistent with other 'deprecated' macros.
        * include/std/type_traits (is_pod, is_pod_v): Use
        _GLIBCXX20_DEPRECATED_SUGGEST instead.

2023-02-06  Arsen Arsenović  <arsen@aarsen.me>

        * Makefile.am [!_GLIBCXX_HOSTED]: Enable src/ subdirectory.
        * Makefile.in: Regenerate.
        * src/Makefile.am [!_GLIBCXX_HOSTED]: Omit compatibility files.
        There's no history to be compatible with.
        * src/c++11/Makefile.am [!_GLIBCXX_HOSTED]: Omit hosted-only
        source files from the build.
        * src/c++17/Makefile.am [!_GLIBCXX_HOSTED]: Likewise.
        * src/c++20/Makefile.am [!_GLIBCXX_HOSTED]: Likewise.
        * src/c++98/Makefile.am [!_GLIBCXX_HOSTED]: Likewise.
        * src/Makefile.in: Regenerate.
        * src/c++11/Makefile.in: Regenerate.
        * src/c++17/Makefile.in: Regenerate.
        * src/c++20/Makefile.in: Regenerate.
        * src/c++98/Makefile.in: Regenerate.

2023-02-06  Jonathan Wakely  <jwakely@redhat.com>

        * src/Makefile.am [GLIBCXX_HOSTED] (SUBDIRS): Do not add
        filesystem, libbacktrace and experimental.
        * src/Makefile.in: Regenerate.

2023-02-04  Hans-Peter Nilsson  <hp@axis.com>

        PR libstdc++/108672
        * include/pstl/unseq_backend_simd.h (__simd_or): Use __INT32_TYPE__
        instead of int32_t.

2023-02-04  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/xml/manual/documentation_hacking.xml: Adjust link to pdftex.
        * doc/html/manual/documentation_hacking.html: Regenerate.

2023-02-04  François Dumont  <fdumont@gcc.gnu.org>

        * include/bits/basic_string.h (operator=(basic_string&&)): Transfer move-to
        storage to the move-from instance when allocators are equal.
        * testsuite/21_strings/basic_string/allocator/char/move_assign.cc (test04):
        New test case.

2023-02-03  Samuel Thibault  <samuel.thibault@gnu.org>

        * config/os/gnu-linux/os_defines.h [!__linux__]
        (_GLIBCXX_NATIVE_THREAD_ID, _GLIBCXX_GTHREAD_USE_WEAK): Do not define.

2023-02-03  Patrick Palka  <ppalka@redhat.com>

        * include/bits/ranges_algo.h (__find_last_fn, find_last):
        Define.
        (__find_last_if_fn, find_last_if): Define.
        (__find_last_if_not_fn, find_last_if_not): Define.
        * testsuite/25_algorithms/find_last/1.cc: New test.
        * testsuite/25_algorithms/find_last_if/1.cc: New test.
        * testsuite/25_algorithms/find_last_if_not/1.cc: New test.

2023-02-03  Patrick Palka  <ppalka@redhat.com>

        * include/bits/ranges_algo.h (out_value_result): Define.
        (iota_result): Define.
        (__iota_fn, iota): Define.
        * testsuite/25_algorithms/iota/1.cc: New test.

2023-02-03  Patrick Palka  <ppalka@redhat.com>

        * include/bits/ranges_algo.h (__contains_fn, contains): Define.
        (__contains_subrange_fn, contains_subrange): Define.
        * testsuite/25_algorithms/contains/1.cc: New test.
        * testsuite/25_algorithms/contains_subrange/1.cc: New test.

2023-02-02  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/xml/manual/abi.xml: Tweak link to ABIcheck project.
        * doc/html/manual/abi.html: Regenerate.

2023-02-02  Jonathan Wakely  <jwakely@redhat.com>

        * src/filesystem/ops-common.h [AVR] (__unsupported): Always use
        errc::function_not_supported instead of errc::not_supported.

2023-02-02  Jonathan Wakely  <jwakely@redhat.com>

        * include/std/sstream  (basic_stringbuf::view): Define for old
        std::string ABI.
        (basic_istringstream::view, basic_0stringstream::view)
        (basic_stringstream::view): Likewise.
        * testsuite/27_io/basic_istringstream/view/char/1.cc: Remove
        { dg-require-effective-target cxx11_abi }.
        * testsuite/27_io/basic_istringstream/view/wchar_t/1.cc:
        Likewise.
        * testsuite/27_io/basic_ostringstream/view/char/1.cc: Likewise.
        * testsuite/27_io/basic_ostringstream/view/wchar_t/1.cc:
        Likewise.
        * testsuite/27_io/basic_stringbuf/view/char/1.cc: Likewise.
        * testsuite/27_io/basic_stringbuf/view/wchar_t/1.cc: Likewise.
        * testsuite/27_io/basic_stringstream/view/char/1.cc: Likewise.
        * testsuite/27_io/basic_stringstream/view/wchar_t/1.cc:
        Likewise.

2023-02-02  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/108636
        * config/abi/pre/gnu.ver (GLIBCXX_3.4.31): Export shared_ptr
        conversion operators for directory iterator comparisons with
        std::default_sentinel_t.
        * include/bits/fs_path.h (path::path(string_view, _Type))
        (path::_Cmpt::_Cmpt(string_view, _Type, size_t)): Move inline
        definitions to ...
        * src/c++17/fs_path.cc: ... here.
        * testsuite/27_io/filesystem/path/108636.cc: New test.

2023-02-02  Jonathan Wakely  <jwakely@redhat.com>

        * include/std/variant (variant::operator=): Implement resolution
        of LWG 3585.
        * testsuite/20_util/variant/lwg3585.cc: New test.

2023-02-02  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/xml/manual/using_exceptions.xml: Update a www.open-std.org
        link to https.
        * doc/html/manual/using_exceptions.html: Regenerate.

2023-02-02  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/xml/manual/debug.xml: Fix link to online GDB manual.
        * doc/html/manual/debug.html: Regenerate.

2023-02-01  Jonathan Wakely  <jwakely@redhat.com>

        * src/c++11/random.cc (random_device::_M_fini): Do not try to
        close the file handle if the target doesn't support the
        /dev/random and /dev/urandom files.

2023-02-01  Jonathan Wakely  <jwakely@redhat.com>

        * config/os/generic/error_constants.h (errc::value_too_large)
        [__AVR__]: Define.
        * src/c++11/system_error.cc
        (system_category::default_error_condition) [__AVR__]: Only match
        recognize values equal to EDOM, ERANGE, ENOSYS and EINTR.
        * src/c++17/fs_ops.cc (fs::current_path) [__AVR__]: Do not check
        for ENOENT etc. in switch.
        (fs::remove_all) [__AVR__]: Likewise.
        * src/filesystem/ops-common.h [__AVR__]: Do not use POSIX open,
        close etc.

2023-02-01  Jonathan Wakely  <jwakely@redhat.com>

        * acinclude.m4 (GLIBCXX_ZONEINFO_DIR) [avr-*-*, msp430-*-*]: Set
        embed_zoneinfo=no
        * configure: Regenerate.

2023-02-01  Hans-Peter Nilsson  <hp@axis.com>

        PR testsuite/108632
        * testsuite/std/time/hh_mm_ss/1.cc (size): Add empty
        struct at end of S0.

2023-01-30  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/xml/manual/shared_ptr.xml: Move links from both
        http://open-std.org and http://www.open-std.org to
        https://www.open-std.org.
        * doc/html/manual/memory.html: Regenerate.

2023-01-28  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/xml/manual/appendix_contributing.xml: Adjust link to
        ISO C++ standard at ANSI.
        Move link to www.open-std.org to https.
        * doc/html/manual/appendix_contributing.html: Regenerate.

2023-01-28  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/xml/manual/documentation_hacking.xml: Move sourceforge.net
        links to https.
        * doc/html/manual/documentation_hacking.html: Regenerate.

2023-01-28  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/xml/manual/abi.xml: Update www.open-std.org link to https.
        * doc/html/manual/abi.html: Regenerate.

2023-01-27  Jakub Jelinek  <jakub@redhat.com>

        PR libstdc++/108568
        * testsuite/17_intro/names.cc (__unused): For linux or GNU hurd
        include features.h if present and then check __GLIBC__ and
        __GLIBC_MINOR__ macros for glibc prior to 2.19, instead of testing
        __GLIBC_PREREQ which isn't defined yet.

2023-01-27  Jonathan Wakely  <jwakely@redhat.com>

        * src/c++20/tzdb.cc (tzdata_stream): Use constant instead of
        string literal.

2023-01-27  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/108554
        * testsuite/23_containers/map/modifiers/108554.cc: Use dg-bogus.

2023-01-26  Jonathan Wakely  <jwakely@redhat.com>

        * src/c++20/tzdb.cc (operator>>(istream&, ZoneInfo&)): Allow
        rules named "+" for compatibility with older tzdata.zi files.

2023-01-26  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/108554
        * include/bits/stl_tree.h (_Rb_tree_insert_and_rebalance): Add
        nonnull attribute.
        (_Rb_tree_rebalance_for_erase): Add nonnull and returns_nonnull
        attributes.
        * testsuite/23_containers/map/modifiers/108554.cc: New test.

2023-01-26  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/108530
        * src/c++20/tzdb.cc (current_zone): Look for TIMEZONE or ZONE in
        /etc/sysconfig/clock, not DEFAULT_TIMEZONE.

2023-01-26  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/xml/manual/intro.xml: Update links to www.open-std.org to
        use https.
        * doc/html/manual/bugs.html: Regenerate.

2023-01-24  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/108530
        * src/c++20/tzdb.cc (current_zone): Look for DEFAULT_TIMEZONE in
        /etc/sysconfig/clock.

2023-01-24  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/102301
        * include/bits/ranges_base.h: Include <bits/stl_iterator.h> for
        std::make_reverse_iterator.
        * include/std/tuple: Include <bits/ranges_util.h> for subrange.
        (make_from_tuple): Add static assertion from P2255 to diagnose
        dangling references.
        * testsuite/20_util/tuple/make_from_tuple/dangling_ref.cc: New test.
        * testsuite/20_util/tuple/make_from_tuple/tuple_like.cc: New test.

2023-01-23  François Dumont  <fdumont@gcc.gnu.org>

        * include/debug/safe_iterator.h (_Safe_iterator<>::_Unchecked): New.
        (_Safe_iterator(const _Safe_iterator&, _Unchecked)): New.
        (_Safe_iterator::operator++(int)): Use latter.
        (_Safe_iterator::operator--(int)): Likewise.
        (_Safe_iterator(_Iterator, const _Safe_sequence_base*)): Remove !_M_insular()
        check.
        * include/debug/safe_local_iterator.h (_Safe_local_iterator<>::_Unchecked):
        New.
        (_Safe_local_iterator(const _Safe_local_iterator&, _Unchecked)): New.
        (_Safe_local_iterator::operator++(int)): Use latter.
        * src/c++11/debug.cc (_S_debug_messages): Add as comment the _Debug_msg_id
        entry associated to the array entry.

2023-01-18  Jonathan Wakely  <jwakely@redhat.com>

        * include/bits/fs_path.h (u8path): Add deprecated attribute.
        * testsuite/27_io/filesystem/path/construct/90281.cc: Add
        -Wno-deprecated-declarations for C++20 and later.
        * testsuite/27_io/filesystem/path/factory/u8path-char8_t.cc:
        Likewise.
        * testsuite/27_io/filesystem/path/factory/u8path.cc: Likewise.
        * testsuite/27_io/filesystem/path/native/string.cc: Likewise.
        * testsuite/27_io/filesystem/path/factory/u8path-depr.cc: New test.

2023-01-18  Jonathan Wakely  <jwakely@redhat.com>

        * include/bits/random.h (random_device) [!_GLIBCXX_USE_DEV_RANDOM]:
        Always call _M_fini and _M_getentropy.

2023-01-18  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/xml/manual/policy_data_structures_biblio.xml: Adjust links
        to www.open-std.org to use https.
        (COM: Component Model Object Technologies): Rename from...
        (The Component Object Model): ...to.
        * doc/html/manual/policy_data_structures.html: Regenerate.

2023-01-18  Dimitrij Mijoski  <dmjpp@hotmail.com>

        * testsuite/22_locale/codecvt/codecvt_unicode.cc: Simplify.
        * testsuite/22_locale/codecvt/codecvt_unicode.h: Simplify.
        * testsuite/22_locale/codecvt/codecvt_unicode_wchar_t.cc: Simplify.

2023-01-17  Jonathan Wakely  <jwakely@redhat.com>

        * acinclude.m4 (GLIBCXX_ZONEINFO_DIR): Check $target_os instead
        of $host. Fix check for file being present during native build.
        * configure: Regenerate.

2023-01-17  Martin Liska  <mliska@suse.cz>

        * src/libbacktrace/Makefile.in: Regenerate.

2023-01-16  Jonathan Wakely  <jwakely@redhat.com>

        * src/c++20/tzdb.cc (_GLIBCXX_USE_CXX11_ABI): Define to 1.

2023-01-16  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/108413
        * include/c_compatibility/stdatomic.h: Change copyright line to
        be consistent with other headers contributed under DCO terms.
        * include/std/expected: Add full stop to copyright line.
        * src/c++20/tzdb.cc: Likewise.

2023-01-15  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/xml/manual/status_cxx2014.xml: Switch www.open-std.org to
        https.
        * doc/xml/manual/status_cxx2017.xml: Ditto.
        * doc/xml/manual/status_cxx2020.xml: Ditto.
        * doc/xml/manual/status_cxx2023.xml: Ditto.
        * doc/html/manual/status.html: Regenerate.

2023-01-15  Jonathan Wakely  <jwakely@redhat.com>

        * testsuite/std/time/tzdb_list/1.cc: Remove dg-xfail-run-if
        and fail gracefully if defining the weak symbol doesn't work.

2023-01-15  François Dumont  <fdumont@gcc.gnu.org>

        PR libstdc++/108288
        * include/debug/safe_iterator.h (_Safe_iterator<>::operator++(int)): Extend deadlock
        fix to other iterator category.
        (_Safe_iterator<>::operator--(int)): Likewise.
        * include/debug/safe_local_iterator.h (_Safe_local_iterator<>::operator++(int)):
        Fix deadlock.
        * testsuite/util/debug/unordered_checks.h (invalid_local_iterator_pre_increment): New.
        (invalid_local_iterator_post_increment): New.
        * testsuite/23_containers/unordered_map/debug/invalid_local_iterator_post_increment_neg.cc:
        New test.
        * testsuite/23_containers/unordered_map/debug/invalid_local_iterator_pre_increment_neg.cc:
        New test.

2023-01-15  Jonathan Wakely  <jwakely@redhat.com>

        * testsuite/30_threads/jthread/jthread.cc: Remove -pthread from
        dg-options.

2023-01-15  Jonathan Wakely  <jwakely@redhat.com>

        * testsuite/std/time/clock/utc/io.cc: Use ctype to widen char.

2023-01-14  Björn Schäpers  <bjoern@hazardy.de>

        * acinclude.m4 (GLIBCXX_ENABLE_BACKTRACE): Add check for
        windows.h. Add pecoff as FORMAT_FILE.
        * config.h.in: Regenerate.
        * configure: Regenerate.
        * src/libbacktrace/Makefile.am: Regenerate.
        * src/libbacktrace/Makefile.in: Add pecoff.c as FORMAT_FILE.

2023-01-14  Björn Schäpers  <bjoern@hazardy.de>

        * include/std/stacktrace (stacktrace_entry::_S_demangle): Use
        raw __name if __cxa_demangle could not demangle it.

2023-01-14  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/108409
        * src/c++20/tzdb.cc (current_zone()) [_AIX]: Use TZ environment
        variable.

2023-01-14  Jonathan Wakely  <jwakely@redhat.com>

        * src/c++20/tzdb.cc (TZDB_DISABLED): Disable all code for
        loading tzdb.
        * testsuite/std/time/tzdb/leap_seconds.cc: Require tzdb
        effective target.
        * testsuite/std/time/tzdb_list/1.cc: Likewise.

2023-01-14  Jonathan Wakely  <jwakely@redhat.com>

        * acinclude.m4 (GLIBCXX_ZONEINFO_DIR): Replace the
        --with-libstdcxx-zoneinfo-dir configure option with
        --with-libstdcxx-zoneinfo with yes/no/static choices as well as
        a directory.
        * config.h.in: Regenerate.
        * configure: Regenerate.
        * doc/xml/manual/configure.xml: Document configure option.
        * doc/html/manual/configure.html: Regenerate.
        * src/c++20/Makefile.am: Generate tzdata.zi.h header.
        * src/c++20/Makefile.in: Regenerate.
        * src/c++20/tzdb.cc (__gnu_cxx::zoneinfo_dir_override): Return a
        null pointer if no directory is configured.
        (zoneinfo_dir): Replace with ...
        (zoneinfo_file): New function.
        (tzdata_stream): New istream class.
        (remote_version, reload_tzdb): Use tzdata_stream.
        * testsuite/lib/libstdc++.exp (check_effective_target_tzdb):
        Check new _GLIBCXX_STATIC_TZDATA macro and ignore presence of
        tzdata.zi file in default location.
        * src/c++20/tzdata.zi: New file.

2023-01-14  Jonathan Wakely  <jwakely@redhat.com>

        * include/bits/chrono_io.h (operator<<): Fix syntax errors.
        * testsuite/std/time/month_day/io.cc: New test.
        * testsuite/std/time/month_day_last/io.cc: New test.
        * testsuite/std/time/month_weekday/io.cc: New test.
        * testsuite/std/time/month_weekday_last/io.cc: New test.
        * testsuite/std/time/weekday_indexed/io.cc: New test.
        * testsuite/std/time/weekday_last/io.cc: New test.
        * testsuite/std/time/year_month/io.cc: New test.
        * testsuite/std/time/year_month_day_last/io.cc: New test.
        * testsuite/std/time/year_month_weekday/io.cc: New test.
        * testsuite/std/time/year_month_weekday_last/io.cc: New test.

2023-01-14  François Dumont  <fdumont@gcc.gnu.org>

        * include/std/format [_GLIBCXX_INLINE_VERSION](to_chars): Adapt __asm symbol
        specifications.
        * config/abi/pre/gnu-versioned-namespace.ver: Add to_chars/from_chars symbols
        export.

2023-01-13  Jonathan Wakely  <jwakely@redhat.com>

        * include/bits/std_mutex.h: Include <errno.h>.

2023-01-13  Arsen Arsenović  <arsen@aarsen.me>

        * testsuite/20_util/to_chars/version.cc: Mark hosted-only.
        * testsuite/20_util/uses_allocator/lwg3677.cc: Ditto.
        * testsuite/20_util/weak_ptr/cons/self_move.cc: Ditto.
        * testsuite/std/ranges/adaptors/as_rvalue/1.cc: Replace usage of
        std::make_unique with a freestanding-compatible wrapper around
        unique_ptr.
        * testsuite/21_strings/basic_string_view/operations/contains/char.cc:
        Don't test for presence of __cpp_lib_string_contains on !HOSTED.
        * testsuite/21_strings/basic_string_view/operations/contains/char/2.cc:
        Ditto.
        * testsuite/std/ranges/version_c++23.cc: Don't test for presence
        of __cpp_lib_ranges in !HOSTED.

2023-01-13  Arsen Arsenović  <arsen@aarsen.me>

        * include/Makefile.am: Install bits/char_traits.h,
        std/string_view
        * include/Makefile.in: Regenerate.
        * include/bits/char_traits.h: Gate hosted-only, wchar-only and
        mbstate-only bits behind appropriate #ifs.
        * include/std/string_view: Gate <iostream> functionality behind
        HOSTED.
        * include/std/version: Enable __cpp_lib_constexpr_string_view
        and __cpp_lib_starts_ends_with in !HOSTED.
        * include/std/ranges: Re-enable __is_basic_string_view on
        freestanding, include <string_view> directly.
        * include/precompiled/stdc++.h: Include <string_view> when
        !HOSTED too.
        * testsuite/20_util/function_objects/searchers.cc: Skip testing
        boyer_moore searchers on freestanding
        * testsuite/21_strings/basic_string_view/capacity/1.cc: Guard
        <string>-related tests behind __STDC_HOSTED__.
        * testsuite/21_strings/basic_string_view/cons/char/1.cc: Ditto.
        * testsuite/21_strings/basic_string_view/cons/char/2.cc: Remove
        unused <stdexcept> include.
        * testsuite/21_strings/basic_string_view/cons/char/3.cc: Remove
        unused <vector> include.
        * testsuite/21_strings/basic_string_view/cons/char/range.cc:
        Guard <string> related testing behind __STDC_HOSTED__.
        * testsuite/21_strings/basic_string_view/cons/wchar_t/1.cc:
        Guard <stdexcept> related tests behind __STDC_HOSTED__.
        * testsuite/21_strings/basic_string_view/element_access/char/1.cc:
        Ditto.
        * testsuite/21_strings/basic_string_view/element_access/wchar_t/1.cc:
        Guard <stdexcept> tests behind __STDC_HOSTED__.
        * testsuite/21_strings/basic_string_view/operations/contains/char/2.cc:
        Enable test on freestanding, guard <stdexcept> bits behind
        __STDC_HOSTED__.
        * testsuite/21_strings/basic_string_view/operations/substr/char.cc:
        Guard <stdexcept> bits behind __STDC_HOSTED__.
        * testsuite/21_strings/basic_string_view/operations/substr/wchar_t.cc:
        Ditto.

2023-01-13  Dimitrij Mijoski  <dmjpp@hotmail.com>

        PR libstdc++/86419
        * src/c++11/codecvt.cc (read_utf8_code_point): Correctly detect
        errors in incomplete multibyte sequences.
        (utf16_in): Remove surrogates parameter. Fix conditions for
        returning partial.
        (utf16_out): Fix condition for returning partial.
        (ucs2_in): Do not pass surrogates argument to utf16_in.
        * testsuite/22_locale/codecvt/codecvt_unicode.cc: New test.
        * testsuite/22_locale/codecvt/codecvt_unicode.h: New header for
        tests.
        * testsuite/22_locale/codecvt/codecvt_unicode_wchar_t.cc: New
        test.

2023-01-13  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/108331
        * config/io/c_io_stdio.h (__c_lock): Define as a typedef for
        __GTHREAD_LEGACY_MUTEX_T if defined.

2023-01-13  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/108327
        * config/os/gnu-linux/ldbl-extra.ver (GLIBCXX_LDBL_3.4.31):
        Export __try_use_facet specializations for facets in namespace
        __gnu_cxx_ldbl128.
        * config/os/gnu-linux/ldbl-ieee128-extra.ver
        (GLIBCXX_IEEE128_3.4.31): Likewise for facets in namespace
        __gnu_cxx_ieee128.
        * testsuite/util/testsuite_abi.cc: Add to lists of known and
        latest versions.

2023-01-13  Jonathan Wakely  <jwakely@redhat.com>

        * include/bits/std_mutex.h: Remove <system_error> include.
        * include/std/condition_variable: Add <bits/error_constants.h>
        include.
        * include/std/mutex: Likewise.
        * include/std/shared_mutex: Likewise.

2023-01-12  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/77691
        * include/experimental/memory_resource
        (_GLIBCXX_MAX_ALIGN_MATCHES_MALLOC): Define.
        (do_allocate, do_deallocate): Check it.
        * testsuite/experimental/memory_resource/new_delete_resource.cc:
        Relax expected behaviour for 64-bit hppa-hp-hpux11.11.

2023-01-12  Jonathan Wakely  <jwakely@redhat.com>

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

2023-01-12  François Dumont  <fdumont@gcc.gnu.org>

        PR libstdc++/107189
        * include/bits/stl_tree.h (_Rb_tree<>::_M_insert_range_equal): Remove
        unused _Alloc_node instance.

2023-01-12  Jonathan Wakely  <jwakely@redhat.com>

        * include/bits/atomic_wait.h (__detail::__platform_wait_t):
        Define as unsigned long if always lock-free, and unsigned int
        otherwise.

2023-01-10  Jonathan Wakely  <jwakely@redhat.com>

        * src/c++20/tzdb.cc (tzdb_list::_S_init_tzdb): Use __try and
        __catch macros for exception handling.

2023-01-10  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/108221
        * include/bits/stl_algobase.h (__lg): Replace six overloads with
        a single function template for all integer types.
        * include/bits/stl_algo.h (__merge_adaptive_resize): Cast
        arithmetic results back to _Distance.

2023-01-10  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/108221
        * include/std/span (span::span()): Un-simplify constraint to
        work for size_t of lesser rank than int.

2023-01-07  LIU Hao  <lh_mouse@126.com>

        PR middle-end/108300
        * src/c++11/system_error.cc: Define `WIN32_LEAN_AND_MEAN` before
        <windows.h>.
        * src/c++11/thread.cc: Likewise.
        * src/c++17/fs_ops.cc: Likewise.
        * src/filesystem/ops.cc: Likewise.

2023-01-06  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/108228
        * src/c++20/tzdb.cc (zoneinfo_dir): Add diagnostic pragma.

2023-01-06  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/108235
        * src/c++20/tzdb.cc (time_zone::_Impl::RulesCounter): New class
        template and partial specialization for synchronizing access to
        time_zone::_Impl::infos.
        (time_zone::_M_get_sys_info, reload_tzdb): Adjust uses of
        rules_counter.

2023-01-06  Patrick Palka  <ppalka@redhat.com>

        PR libstdc++/108260
        * include/bits/utility.h (__cpp_lib_ranges_zip): Define for C++23.
        * include/std/ranges (__cpp_lib_ranges_zip): Likewise.
        (__cpp_lib_ranges_chunk): Likewise.
        (__cpp_lib_ranges_slide): Likewise.
        (__cpp_lib_ranges_chunk_by): Likewise.
        (__cpp_lib_ranges_join_with): Likewise.
        (__cpp_lib_ranges_repeat): Likewise.
        (__cpp_lib_ranges_stride): Likewise.
        (__cpp_lib_ranges_cartesian_product): Likewise.
        (__cpp_lib_ranges_as_rvalue): Likewise.
        * include/std/version: Ditto.
        * testsuite/20_util/tuple/p2321r2.cc: Verify value of
        feature-test macro.
        * testsuite/std/ranges/adaptors/as_rvalue/1.cc: Likewise.
        * testsuite/std/ranges/adaptors/chunk/1.cc: Likewise.
        * testsuite/std/ranges/adaptors/chunk_by/1.cc: Likewise.
        * testsuite/std/ranges/adaptors/join_with/1.cc: Likewise.
        * testsuite/std/ranges/adaptors/slide/1.cc: Likewise.
        * testsuite/std/ranges/adaptors/stride/1.cc: Likewise.
        * testsuite/std/ranges/cartesian_product/1.cc: Likewise.
        * testsuite/std/ranges/repeat/1.cc: Likewise.
        * testsuite/std/ranges/zip/1.cc: Likewise.
        * testsuite/std/ranges/version_c++23.cc: New test.

2023-01-06  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/108214
        * include/std/bitset (operator>>): Use alloca in the right
        scope, not in a constructor.
        * testsuite/20_util/bitset/io/input.cc: Check case from PR.

2023-01-06  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/108221
        * include/std/format (basic_format_arg) [!__cpp_lib_to_chars]:
        Disable visiting floating-point types.

2023-01-06  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/108288
        * include/debug/safe_iterator.h (_Safe_iterator::operator++(int))
        (_Safe_iterator::operator--(int)): Do not hold lock around
        construction of return value.

2023-01-05  John David Anglin  <danglin@gcc.gnu.org>

        * config/cpu/hppa/atomicity.h (_PA_LDCW_INSN): Define.
        (__exchange_and_add): Use _PA_LDCW_INSN.  Use ordered store for
        lock release.  Revise loop.
        (__atomic_add): Likewise.

2023-01-05  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/108212
        * python/libstdcxx/v6/printers.py (_utc_timezone): New global
        variable.
        (StdChronoTimePointPrinter::to_string): Use it.

2023-01-05  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/108290
        * include/std/functional (_Bind_front): Add no_unique_address
        attribute to data members.
        * testsuite/20_util/function_objects/bind_front/107784.cc: Check
        size of call wrappers with empty types for targets and bound
        arguments.

2023-01-05  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/108211
        * src/c++20/tzdb.cc (chrono::current_zone()): Check for zone
        using only last component of the name.

2023-01-05  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/108228
        PR libstdc++/108235
        * config/abi/pre/gnu.ver: Move zoneinfo_dir_override export to
        the latest symbol version.
        * src/c++20/tzdb.cc (USE_ATOMIC_SHARED_PTR): Define to 0 if
        atomic<_Node*> is not always lock free.
        (USE_ATOMIC_LIST_HEAD): New macro.
        [__hpux__] (__gnu_cxx::zoneinfo_dir_override()): Provide
        definition of weak symbol.
        (tzdb_list::_Node::_S_head): Rename to _S_head_cache.
        (tzdb_list::_Node::_S_list_head): New function for accessing
        list head efficiently.
        (tzdb_list::_Node::_S_cache_list_head): New function for
        updating _S_list_head.

2023-01-05  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/108265
        * include/std/chrono (hh_mm_ss): Do not use chrono::abs if
        duration rep is unsigned.
        * testsuite/std/time/hh_mm_ss/1.cc: Check unsigned rep.

2023-01-04  Iain Sandoe  <iain@sandoe.co.uk>

        PR libstdc++/108228
        * config/abi/pre/gnu.ver (GLIBCXX_3.4):
        Add __gnu_cxx::zoneinfo_dir_override().

2023-01-04  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/108258
        * include/std/array (__array_traits<T, 0>::operator T*()): Add
        constexpr.
        * testsuite/23_containers/array/element_access/constexpr_c++17.cc: Check
        std::array<T, 0>::data().

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