+2020-12-15 Jonathan Wakely <jwakely@redhat.com>
+
+ Revert:
+ 2020-12-15 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/98108
+ * include/std/iostream (__ioinit): Add init_priority attribute.
+
+2020-12-15 Keith Packard <keithp@keithp.com>
+
+ * acinclude.m4 (GLIBCXX_ENABLE_CSTDIO): Allow "stdio_pure"
+ option and define _GLIBCXX_USE_PURE_STDIO when it is used. Also
+ add "stdio_posix" option as an alias for "stdio".
+ * config/io/basic_file_stdio.cc [_GLIBCXX_USE_PURE_STDIO]: Only
+ use defined stdio entry points for all I/O operations, without
+ direct calls to underlying POSIX functions.
+ * config.h.in: Regenerate.
+ * configure: Regenerate.
+
+2020-12-15 Ville Voutilainen <ville.voutilainen@gmail.com>
+
+ * testsuite/27_io/rvalue_streams.cc: Run the extraction to a char*
+ for C++17 and lower only.
+
+2020-12-15 Jonathan Wakely <jwakely@redhat.com>
+
+ * testsuite/25_algorithms/lexicographical_compare/deque_iterators/1.cc:
+ Add dg-timeout-factor directive.
+ * testsuite/ext/pb_ds/regression/tree_map_rand_debug.cc:
+ Increase timeout factor from 2.0 to 3.0.
+ * testsuite/ext/pb_ds/regression/tree_set_rand_debug.cc:
+ Likewise.
+ * testsuite/lib/libstdc++.exp (check_effective_target_debug-mode):
+ Define "debug-mode" as an effective-target keyword.
+
+2020-12-15 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/bits/c++config (__glibcxx_assert_1): Define as empty
+ for C++11.
+
+2020-12-15 Marius Hillenbrand <mhillen@linux.ibm.com>
+
+ * testsuite/22_locale/locale/cons/5.cc: Add missing directives
+ for required locales.
+
+2020-12-15 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/bits/iterator_concepts.h (incrementable_traits<Tp>):
+ Remove workaround for PR c++/78173.
+
+2020-12-15 Vladimir Vishnevsky <vv.os.swe@gmail.com>
+
+ * configure.ac: Skip AC_LIBTOOL_DLOPEN check if avr-libc is used.
+ * configure: Regenerate.
+
+2020-12-15 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/98108
+ * include/std/iostream (__ioinit): Add init_priority attribute.
+
+2020-12-15 Gerald Pfeifer <gerald@pfeifer.com>
+
+ * doc/xml/manual/codecvt.xml: Update link to Unicode-HOWTO.
+ * doc/html/manual/facets.html: Regenerate.
+
+2020-12-14 François Dumont <fdumont@gcc.gnu.org>
+
+ * testsuite/23_containers/array/debug/back1_neg.cc: Target c++14 because assertion
+ is disabled in C++11.
+ * testsuite/23_containers/array/debug/front1_neg.cc: Likewise.
+ * testsuite/23_containers/array/debug/square_brackets_operator1_neg.cc: Likewise.
+
+2020-12-14 Martin Sebor <msebor@redhat.com>
+
+ * testsuite/ext/vstring/requirements/exception/basic.cc: Suppress
+ a false positive warning.
+ * testsuite/ext/vstring/requirements/exception/propagation_consistent.cc:
+ Same.
+
+2020-12-14 François Dumont <fdumont@gcc.gnu.org>
+
+ * testsuite/23_containers/array/debug/back2_neg.cc: target c++14 because assertion
+ for constexpr is disabled in C++11.
+ * testsuite/23_containers/array/debug/front2_neg.cc: Likewise.
+ * testsuite/23_containers/array/debug/square_brackets_operator2_neg.cc: Likewise.
+ * testsuite/23_containers/vector/debug/multithreaded_swap.cc: Include <memory>
+ for shared_ptr.
+
+2020-12-12 François Dumont <fdumont@gcc.gnu.org>
+
+ * include/debug/macros.h (__glibcxx_check_can_increment_range): Replace
+ _GLIBCXX_DEBUG_VERIFY_COND_AT usage with _GLIBCXX_DEBUG_VERIFY_AT_F.
+ (__glibcxx_check_can_decrement_range): Likewise.
+ * testsuite/25_algorithms/copy_backward/constexpr.cc (test03): New.
+ * testsuite/25_algorithms/copy/debug/constexpr_neg.cc: New test.
+ * testsuite/25_algorithms/copy_backward/debug/constexpr_neg.cc: New test.
+ * testsuite/25_algorithms/equal/constexpr_neg.cc: New test.
+ * testsuite/25_algorithms/equal/debug/constexpr_neg.cc: New test.
+
+2020-12-10 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/98226
+ * include/std/bit (__countl_one, __countr_one): Remove redundant
+ branches.
+
+2020-12-09 Jonathan Wakely <jwakely@redhat.com>
+
+ * acinclude.m4 (GLIBCXX_ENABLE_LIBSTDCXX_TIME): Define NO_SLEEP
+ if none of nanosleep, sleep and Sleep is available.
+ * config.h.in: Regenerate.
+ * configure: Regenerate.
+ * include/std/thread [_GLIBCXX_NO_SLEEP] (__sleep_for): Do
+ not declare.
+ [_GLIBCXX_NO_SLEEP] (sleep_for, sleep_until): Do not
+ define.
+ * src/c++11/thread.cc [_GLIBCXX_NO_SLEEP] (__sleep_for): Do
+ not define.
+
+2020-12-08 Jason Merrill <jason@redhat.com>
+
+ PR c++/96299
+ * testsuite/18_support/comparisons/algorithms/partial_order.cc:
+ One more line needs to use VERIFY instead of static_assert.
+
+2020-12-08 Jonathan Wakely <jwakely@redhat.com>
+
+ * doc/xml/manual/appendix_contributing.xml: Use consistent
+ indentation.
+ * doc/html/manual/source_code_style.html: Regenerate.
+
+2020-12-05 Iain Sandoe <iain@sandoe.co.uk>
+
+ PR target/97865
+ * configure: Regenerate.
+
+2020-12-04 Jakub Jelinek <jakub@redhat.com>
+
+ PR c++/80780
+ * testsuite/18_support/source_location/1.cc (main): Adjust for
+ __builtin_source_location using __PRETTY_FUNCTION__-like names instead
+ __FUNCTION__-like.
+ * testsuite/18_support/source_location/consteval.cc (main): Likewise.
+
+2020-12-03 Martin Sebor <msebor@redhat.com>
+
+ * testsuite/ext/vstring/modifiers/clear/56166.cc: Suppress a false
+ positive warning.
+
+2020-12-03 Jonathan Wakely <jwakely@redhat.com>
+
+ * testsuite/26_numerics/bit/bit.cast/bit_cast.cc: Remove stray
+ word from copy&paste.
+ * testsuite/26_numerics/bit/bit.cast/version.cc: Likewise.
+
+2020-12-03 Jonathan Wakely <jwakely@redhat.com>
+
+ * doc/xml/manual/status_cxx2020.xml: Update C++20 status.
+ * doc/html/*: Regenerate.
+
+2020-12-03 JeanHeyd Meneide <phdofthehouse@gmail.com>
+
+ * doc/doxygen/user.cfg.in (INPUT): Add <source_location>.
+ * include/Makefile.am: Add <source_location>.
+ * include/Makefile.in: Regenerate.
+ * include/std/version (__cpp_lib_source_location): Define.
+ * include/std/source_location: New file.
+ * testsuite/18_support/source_location/1.cc: New test.
+ * testsuite/18_support/source_location/consteval.cc: New test.
+ * testsuite/18_support/source_location/srcloc.h: New test.
+ * testsuite/18_support/source_location/version.cc: New test.
+
+2020-12-03 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/93121
+ * include/std/bit (__cpp_lib_bit_cast, bit_cast): Define.
+ * include/std/version (__cpp_lib_bit_cast): Define.
+ * testsuite/26_numerics/bit/bit.cast/bit_cast.cc: New test.
+ * testsuite/26_numerics/bit/bit.cast/version.cc: New test.
+
+2020-12-03 Jonathan Wakely <jwakely@redhat.com>
+
+ * config/abi/post/powerpc-linux-gnu/baseline_symbols.txt:
+ Update.
+ * config/abi/post/powerpc64-linux-gnu/32/baseline_symbols.txt:
+ Update.
+
+2020-12-03 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/std/array (array::operator[](size_t) const, array::front() const)
+ (array::back() const) [__cplusplus == 201103]: Disable
+ assertions.
+ * testsuite/23_containers/array/element_access/constexpr_element_access.cc:
+ Check for correct values.
+ * testsuite/23_containers/array/tuple_interface/get_neg.cc:
+ Adjust dg-error line numbers.
+ * testsuite/23_containers/array/debug/constexpr_c++11.cc: New test.
+
+2020-12-02 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/65480
+ PR libstdc++/68735
+ * python/libstdcxx/v6/printers.py (function_pointer_to_name):
+ New helper function to get the name of a function from its
+ address.
+ (StdExpAnyPrinter.__init__): Use it.
+
+2020-12-02 Jonathan Wakely <jwakely@redhat.com>
+
+ * testsuite/lib/dg-options.exp (add_options_for_libatomic):
+ Replace powerpc-ibm-aix* and powerpc*-*-darwin* with check for
+ powerpc && ilp32.
+
+2020-12-02 Jonathan Wakely <jwakely@redhat.com>
+
+ * testsuite/27_io/basic_istream/ignore/char/94749.cc: Add
+ dg-timeout-factor for ilp32 targets.
+ * testsuite/27_io/basic_istream/ignore/wchar_t/94749.cc:
+ Likewise.
+
+2020-12-02 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/ext/rope (rope::_S_concat_char_iter)
+ (rope::_S_destr_concat_char_iter): Add allocator parameter.
+ (rope::push_back, rope::append, rope::insert, operator+):
+ Pass allocator.
+ * include/ext/ropeimpl.h (rope::_S_concat_char_iter)
+ (rope::_S_destr_concat_char_iter): Add allocator parameter
+ and use it.
+ (_Rope_char_ref_proxy::operator=(_CharT)): Pass allocator.
+
+2020-12-02 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/ext/rope: Fix indentation of access specifiers.
+
+2020-12-02 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/bits/atomic_timed_wait.h: Use #if instead of #ifdef.
+ * include/bits/semaphore_base.h: Likewise.
+ * include/std/version: Remove trailing whitespace.
+
+2020-12-02 Jonathan Wakely <jwakely@redhat.com>
+
+ * python/libstdcxx/v6/printers.py (StdExpPathPrinter): Store the
+ name of the type and pass it to the iterator.
+ (StdPathPrinter): Likewise.
+ * testsuite/libstdc++-prettyprinters/filesystem-ts.cc: New test.
+
+2020-12-01 Thomas Rodgers <trodgers@redhat.com>
+
+ * include/bits/atomic_base.h: Replace usage of
+ _GLIBCXX_HAVE_ATOMIC_WAIT with __cpp_lib_atomic_wait.
+ * include/bits/atomic_timed_wait.h: Likewise.
+ * include/bits/atomic_wait.h: Define __cpp_lib_atomic_wait
+ feature test macro.
+ * include/bits/semaphore_base.h: Replace usage of
+ _GLIBCXX_HAVE_ATOMIC_WAIT with __cpp_lib_atomic_wait.
+ * include/std/atomic: Likewise.
+ * include/std/latch: Likewise.
+ * include/std/semaphore: Likewise.
+ * include/std/version: Define __cpp_lib_atomic wait
+ feature test macro and replace usage of
+ _GLIBCXX_HAVE_ATOMIC_WAIT.
+ * testsuite/29_atomics/atomic/wait_notify/1.cc: New test.
+ * testsuite/29_atomics/atomic/wait_notify/2.cc: Likewise.
+
+2020-12-01 Michael Weghorn <m.weghorn@posteo.de>
+
+ * python/libstdcxx/v6/printers.py (StdBitIteratorPrinter)
+ (StdBitReferencePrinter): Add pretty-printers for
+ _Bit_reference, _Bit_iterator and _Bit_const_iterator.
+ * testsuite/libstdc++-prettyprinters/simple.cc: Test
+ std::_Bit_reference, std::_Bit_iterator and
+ std::_Bit_const_iterator.
+ * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
+
+2020-12-01 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/bits/c++config (_GLIBCXX_HAS_BUILTIN): Define macro to
+ work around different implementations of __has_builtin.
+ (_GLIBCXX_HAVE_BUILTIN_HAS_UNIQ_OBJ_REP)
+ (_GLIBCXX_HAVE_BUILTIN_IS_AGGREGATE)
+ (_GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED)
+ (_GLIBCXX_HAVE_BUILTIN_IS_SAME, _GLIBCXX_HAVE_BUILTIN_LAUNDER):
+ Define using _GLIBCXX_HAS_BUILTIN.
+
+2020-12-01 Jonathan Wakely <jwakely@redhat.com>
+
+ * testsuite/27_io/basic_istream/get/char/lwg3464.cc: Add
+ dg-timeout-factor directive.
+ * testsuite/27_io/basic_istream/get/wchar_t/lwg3464.cc:
+ Likewise.
+
+2020-12-01 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/98003
+ * testsuite/27_io/basic_syncbuf/sync_ops/1.cc: Add options for
+ libatomic.
+
+2020-11-30 Jonathan Wakely <jwakely@redhat.com>
+
+ * doc/doxygen/user.cfg.in (INPUT): Add <latch> and <semaphore>.
+
+2020-11-30 Jonathan Wakely <jwakely@redhat.com>
+
+ * testsuite/lib/libstdc++.exp (libstdc++_init): Reduce
+ default tool_timeout to 360.
+
+2020-11-30 Jonathan Wakely <jwakely@redhat.com>
+
+ * testsuite/20_util/specialized_algorithms/pstl/*: Add
+ dg-timeout-factor.
+ * testsuite/25_algorithms/pstl/*: Likewise.
+ * testsuite/26_numerics/pstl/*: Likewise.
+ * testsuite/28_regex/*: Likewise.
+
+2020-11-29 John David Anglin <danglin@gcc.gnu.org>
+
+ * configure: Regenerate.
+
+2020-11-27 Jonathan Wakely <jwakely@redhat.com>
+
+ * testsuite/lib/libstdc++.exp (v3_try_preprocess): Define
+ new proc to preprocess a chunk of code.
+ (v3_check_preprocessor_condition): Define new proc to test
+ a preprocessor condition depending on GCC or libstdc++ macros.
+ (check_v3_target_debug_mode, check_v3_target_normal_mode):
+ Use v3_try_preprocess.
+ (check_v3_target_normal_namespace)
+ (check_v3_target_parallel_mode, check_v3_target_cstdint)
+ (check_v3_target_cmath, check_v3_target_atomic_builtins)
+ (check_v3_target_gthreads, check_v3_target_gthreads_timed)
+ (check_v3_target_sleep, check_v3_target_sched_yield)
+ (check_v3_target_string_conversions, check_v3_target_swprintf)
+ (check_v3_target_binary_io, check_v3_target_nprocs): Use
+ v3_check_preprocessor_condition.
+ (check_effective_target_cxx11): Likewise.
+ (check_effective_target_random_device): Likewise.
+ (check_effective_target_tbb-backend): Likewise.
+ (check_effective_target_futex): Likewise.
+ (check_v3_target_little_endian) Call check_effective_target_le.
+ (check_effective_target_atomic-builtins): New proc to define
+ new effective-target keyword.
+ (check_effective_target_gthreads-timed): Likewise.
+
+2020-11-27 Jonathan Wakely <jwakely@redhat.com>
+
+ * testsuite/27_io/filesystem/operations/absolute.cc: Avoid
+ -Wrange-loop-construct warning.
+ * testsuite/27_io/filesystem/path/append/source.cc: Likewise.
+ * testsuite/27_io/filesystem/path/assign/copy.cc: Likewise.
+ * testsuite/27_io/filesystem/path/compare/path.cc: Likewise.
+ * testsuite/27_io/filesystem/path/construct/copy.cc: Likewise.
+ * testsuite/27_io/filesystem/path/decompose/extension.cc:
+ Likewise.
+ * testsuite/27_io/filesystem/path/decompose/filename.cc:
+ Likewise.
+ * testsuite/27_io/filesystem/path/decompose/parent_path.cc:
+ Likewise.
+ * testsuite/27_io/filesystem/path/decompose/relative_path.cc:
+ Likewise.
+ * testsuite/27_io/filesystem/path/decompose/root_directory.cc:
+ Likewise.
+ * testsuite/27_io/filesystem/path/decompose/root_path.cc:
+ Likewise.
+ * testsuite/27_io/filesystem/path/itr/traversal.cc: Likewise.
+ * testsuite/27_io/filesystem/path/modifiers/remove_filename.cc:
+ Likewise.
+ * testsuite/27_io/filesystem/path/modifiers/replace_extension.cc:
+ Likewise.
+ * testsuite/27_io/filesystem/path/modifiers/replace_filename.cc:
+ Likewise.
+ * testsuite/27_io/filesystem/path/nonmember/append.cc: Likewise.
+ * testsuite/27_io/filesystem/path/nonmember/cmp.cc: Likewise.
+ * testsuite/27_io/filesystem/path/nonmember/cmp_c++20.cc:
+ Likewise.
+ * testsuite/27_io/filesystem/path/nonmember/hash_value.cc:
+ Likewise.
+ * testsuite/27_io/filesystem/path/query/has_extension.cc:
+ Likewise.
+ * testsuite/27_io/filesystem/path/query/has_filename.cc:
+ Likewise.
+ * testsuite/27_io/filesystem/path/query/has_parent_path.cc:
+ Likewise.
+ * testsuite/27_io/filesystem/path/query/has_relative_path.cc:
+ Likewise.
+ * testsuite/27_io/filesystem/path/query/has_root_directory.cc:
+ Likewise.
+ * testsuite/27_io/filesystem/path/query/has_root_name.cc:
+ Likewise.
+ * testsuite/27_io/filesystem/path/query/has_root_path.cc:
+ Likewise.
+ * testsuite/27_io/filesystem/path/query/has_stem.cc: Likewise.
+ * testsuite/27_io/filesystem/path/query/is_relative.cc: Likewise.
+ * testsuite/experimental/filesystem/operations/absolute.cc:
+ Likewise.
+ * testsuite/experimental/filesystem/path/assign/copy.cc: Likewise.
+ * testsuite/experimental/filesystem/path/compare/path.cc:
+ Likewise.
+ * testsuite/experimental/filesystem/path/construct/copy.cc:
+ Likewise.
+ * testsuite/experimental/filesystem/path/decompose/extension.cc:
+ Likewise.
+ * testsuite/experimental/filesystem/path/decompose/filename.cc:
+ Likewise.
+ * testsuite/experimental/filesystem/path/decompose/parent_path.cc:
+ Likewise.
+ * testsuite/experimental/filesystem/path/decompose/relative_path.cc:
+ Likewise.
+ * testsuite/experimental/filesystem/path/decompose/root_directory.cc:
+ Likewise.
+ * testsuite/experimental/filesystem/path/decompose/root_path.cc:
+ Likewise.
+ * testsuite/experimental/filesystem/path/itr/traversal.cc:
+ Likewise.
+ * testsuite/experimental/filesystem/path/modifiers/remove_filename.cc:
+ Likewise.
+ * testsuite/experimental/filesystem/path/modifiers/replace_extension.cc:
+ Likewise.
+ * testsuite/experimental/filesystem/path/modifiers/replace_filename.cc:
+ Likewise.
+ * testsuite/experimental/filesystem/path/nonmember/hash_value.cc:
+ Likewise.
+ * testsuite/experimental/filesystem/path/query/has_extension.cc:
+ Likewise.
+ * testsuite/experimental/filesystem/path/query/has_filename.cc:
+ Likewise.
+ * testsuite/experimental/filesystem/path/query/has_parent_path.cc:
+ Likewise.
+ * testsuite/experimental/filesystem/path/query/has_relative_path.cc:
+ Likewise.
+ * testsuite/experimental/filesystem/path/query/has_root_directory.cc:
+ Likewise.
+ * testsuite/experimental/filesystem/path/query/has_root_name.cc:
+ Likewise.
+ * testsuite/experimental/filesystem/path/query/has_root_path.cc:
+ Likewise.
+ * testsuite/experimental/filesystem/path/query/has_stem.cc:
+ Likewise.
+ * testsuite/experimental/filesystem/path/query/is_relative.cc:
+ Likewise.
+
+2020-11-27 Jonathan Wakely <jwakely@redhat.com>
+
+ * src/c++98/locale.cc (locale::facet::_S_get_c_locale()):
+ Revert change to use __is_single_threaded.
+ * src/c++98/locale_init.cc (locale::_S_initialize()):
+ Likewise.
+
+2020-11-26 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/bits/atomic_wait.h (_GLIBCXX_HAVE_ATOMIC_WAIT):
+ Define.
+ * include/bits/atomic_base.h: Check _GLIBCXX_HAVE_ATOMIC_WAIT.
+ * include/bits/atomic_timed_wait.h: Likewise.
+ * include/bits/semaphore_base.h: Likewise.
+ * include/std/atomic: Likewise.
+ * include/std/latch: Likewise.
+ * include/std/semaphore: Likewise.
+
+2020-11-26 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/std/latch: Depend on _GLIBCXX_HAS_GTHREADS and
+ _GLIBCXX_HAVE_LINUX_FUTEX.
+ * include/std/version (__cpp_lib_latch): Define conditionally.
+
+2020-11-26 Jonathan Wakely <jwakely@redhat.com>
+
+ * testsuite/lib/libstdc++.exp (check_effective_target_gthreads):
+ Call check_v3_target_gthreads not check_v3_target_gthreads_timed.
+
+2020-11-26 Jonathan Wakely <jwakely@redhat.com>
+
+ * testsuite/28_regex/algorithms/regex_match/basic/string_range_01_03.cc:
+ Add dg-timeout-factor directive.
+ * testsuite/28_regex/algorithms/regex_match/cstring_bracket_01.cc:
+ Likewise.
+ * testsuite/28_regex/algorithms/regex_match/ecma/char/backref.cc:
+ Likewise.
+ * testsuite/28_regex/algorithms/regex_match/ecma/wchar_t/63199.cc:
+ Likewise.
+ * testsuite/28_regex/algorithms/regex_match/ecma/wchar_t/anymatcher.cc:
+ Likewise.
+ * testsuite/28_regex/algorithms/regex_match/ecma/wchar_t/cjk_match.cc:
+ Likewise.
+ * testsuite/28_regex/algorithms/regex_match/ecma/wchar_t/hex.cc:
+ Likewise.
+ * testsuite/28_regex/algorithms/regex_match/extended/wstring_locale.cc:
+ Likewise.
+ * testsuite/28_regex/algorithms/regex_search/61720.cc: Likewise.
+ * testsuite/28_regex/algorithms/regex_search/ecma/assertion.cc:
+ Likewise.
+ * testsuite/28_regex/algorithms/regex_search/ecma/string_01.cc:
+ Likewise.
+ * testsuite/28_regex/basic_regex/ctors/deduction.cc: Likewise.
+
+2020-11-26 Jonathan Wakely <jwakely@redhat.com>
+
+ * testsuite/lib/libstdc++.exp (libstdc++_init): Only set
+ tool_timeout if it hasn't been set by the user already.
+
+2020-11-26 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/97936
+ * testsuite/29_atomics/atomic/wait_notify/bool.cc: Fix missed
+ notifications by making the new thread wait until the parent
+ thread is waiting on the condition variable.
+ * testsuite/29_atomics/atomic/wait_notify/pointers.cc: Likewise.
+ * testsuite/29_atomics/atomic_flag/wait_notify/1.cc: Likewise.
+ * testsuite/29_atomics/atomic_ref/wait_notify.cc: Likewise.
+
+2020-11-26 Jonathan Wakely <jwakely@redhat.com>
+
+ * testsuite/18_support/96817.cc: Use new effective-target
+ keywords to select supported targets more effectively.
+ * testsuite/30_threads/call_once/66146.cc: Likewise.
+ * testsuite/lib/libstdc++.exp (check_effective_target_futex):
+ Define new proc.
+ (check_effective_target_gthreads): Define new proc to replace
+ dg-require-gthreads.
+
+2020-11-26 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
+
+ * acinclude.m4 (GLIBCXX_ENABLE_LIBSTDCXX_TIME): Remove libposix4
+ references.
+ <solaris*>: Don't use -lrt any longer.
+ * configure: Regenerate.
+ * doc/xml/manual/configure.xml (--enable-libstdcxx-time=OPTION):
+ Remove libposix4 reference.
+
+2020-11-26 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/98001
+ * testsuite/ext/stdio_filebuf/char/79820.cc: Do not pass invalid
+ FILE* to constructor.
+
+2020-11-26 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/precompiled/stdc++.h: Add new headers.
+ * include/std/stop_token: Include <semaphore> unconditionally.
+
+2020-11-25 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/bits/atomic_timed_wait.h (__cond_wait_until): Do not
+ perform redundant conversions to the same clock.
+
+2020-11-25 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/bits/atomic_timed_wait.h (__cond_wait_until_impl):
+ Do not define when _GLIBCXX_HAVE_LINUX_FUTEX is defined. Use
+ __condvar and mutex instead of __gthread_cond_t and
+ unique_lock<mutex>.
+ (__cond_wait_until): Likewise. Fix test for return value of
+ __cond_wait_until_impl.
+ (__timed_waiters::_M_do_wait_until): Use __condvar instead
+ of __gthread_cond_t.
+ * include/bits/atomic_wait.h: Remove <bits/unique_lock.h>
+ include. Only include <bits/std_mutex.h> if not using futexes.
+ (__platform_wait_max_value): Remove unused variable.
+ (__waiters::lock_t): Use lock_guard instead of unique_lock.
+ (__waiters::_M_cv): Use __condvar instead of __gthread_cond_t.
+ (__waiters::_M_do_wait(__platform_wait_t)): Likewise.
+ (__waiters::_M_notify()): Likewise. Use notify_one() if not
+ asked to notify all.
+ * include/bits/std_mutex.h (__condvar): New type.
+ * include/std/condition_variable (condition_variable::_M_cond)
+ (condition_variable::wait_until): Use __condvar instead of
+ __gthread_cond_t.
+ * src/c++11/condition_variable.cc (condition_variable): Define
+ default constructor and destructor as defaulted.
+ (condition_variable::wait, condition_variable::notify_one)
+ (condition_variable::notify_all): Forward to corresponding
+ member function of __condvar.
+
+2020-11-25 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/97936
+ * testsuite/29_atomics/atomic/wait_notify/bool.cc: Re-eneable
+ test.
+ * testsuite/29_atomics/atomic/wait_notify/generic.cc: Likewise.
+ * testsuite/29_atomics/atomic/wait_notify/pointers.cc: Likewise.
+ * testsuite/29_atomics/atomic_flag/wait_notify/1.cc: Likewise.
+ * testsuite/29_atomics/atomic_float/wait_notify.cc: Likewise.
+ * testsuite/29_atomics/atomic_integral/wait_notify.cc: Likewise.
+ * testsuite/util/atomic/wait_notify_util.h: Fix missed
+ notifications by making the new thread wait until the parent
+ thread is waiting on the condition variable.
+
+2020-11-25 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/97935
+ * include/bits/iterator_concepts.h (__detail::__iter_without_category):
+ New helper concept.
+ (__iterator_traits::__cat): Use __detail::__iter_without_category.
+ * testsuite/24_iterators/associated_types/iterator.traits.cc: New test.
+
+2020-11-25 Jonathan Wakely <jwakely@redhat.com>
+
+ * testsuite/17_intro/names.cc: Do not test 'v' on AIX.
+
+2020-11-25 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/97936
+ * include/bits/atomic_wait.h (__platform_wait): Check errno,
+ not just the value of EAGAIN.
+ (__waiters::__waiters()): Fix name of data member.
+
+2020-11-25 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/97936
+ * include/bits/atomic_wait.h (__platform_wait): Return if futex
+ sets EAGAIN.
+ * testsuite/30_threads/latch/3.cc: Re-enable test.
+ * testsuite/30_threads/semaphore/try_acquire_until.cc: Likewise.
+
+2020-11-24 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/97936
+ PR libstdc++/97944
+ * testsuite/29_atomics/atomic_integral/wait_notify.cc: Disable.
+ Do not require pthreads, but add -pthread when appropriate.
+ * testsuite/30_threads/jthread/95989.cc: Likewise.
+ * testsuite/30_threads/latch/3.cc: Likewise.
+ * testsuite/30_threads/semaphore/try_acquire_until.cc: Likewise.
+
+2020-11-24 Jonathan Wakely <jwakely@redhat.com>
+
+ * testsuite/30_threads/jthread/95989.cc: Run all three test
+ functions, not just the first one twice.
+
+2020-11-24 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/67791
+ * src/c++11/thread.cc (thread::_M_start_thread(_State_ptr, void (*)())):
+ Check that gthreads is available before calling __gthread_create.
+
+2020-11-24 Jonathan Wakely <jwakely@redhat.com>
+
+ * src/c++98/locale.cc (locale::facet::_S_get_c_locale())
+ (locale::id::_M_id() const): Use __is_single_threaded.
+ * src/c++98/locale_init.cc (locale::_S_initialize()):
+ Likewise.
+
+2020-11-23 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/bits/semaphore_base.h
+ (__platform_semaphore::_M_try_acquire_until): Fix type of
+ variable.
+
+2020-11-23 Stephan Bergmann <sbergman@redhat.com>
+
+ * include/bits/atomic_wait.h (__thread_relax, __thread_yield):
+ Add 'inline'.
+
+2020-11-23 Jonathan Wakely <jwakely@redhat.com>
+
+ * acinclude.m4 (GLIBCXX_CHECK_GTHREADS): Check for
+ * config.h.in: Regenerate.
+ * configure: Regenerate.
+ * include/bits/semaphore_base.h (_GLIBCXX_HAVE_POSIX_SEMAPHORE):
+ Check autoconf macro instead of defining it here.
+
+2020-11-23 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/bits/atomic_wait.h: Do not define anything unless
+ gthreads or futexes are available.
+ * include/bits/atomic_timed_wait.h: Likewise.
+ * include/bits/semaphore_base.h: Likewise.
+ * include/std/semaphore: Likewise.
+ * include/bits/atomic_base.h (atomic_flag::wait)
+ (atomic_flag::notify_one, atomic_flag::notify_all)
+ (__atomic_base<I>::wait, __atomic_base<I>::notify_one)
+ (__atomic_base<I>::notify_all, __atomic_base<P*>::wait)
+ (__atomic_base<P*>::notify_one, __atomic_base<P*>::notify_all)
+ (__atomic_impl::wait, __atomic_impl::notify_one)
+ (__atomic_impl::notify_all, __atomic_float::wait)
+ (__atomic_float::notify_one, __atomic_float::notify_all)
+ (__atomic_ref::wait, __atomic_ref::notify_one)
+ (__atomic_ref::notify_all): Only define if gthreads or futexes
+ are available.
+ * include/std/atomic (atomic::wait, atomic::notify_one)
+ (atomic::notify_all): Likewise.
+ * include/std/version (__cpp_lib_semaphore): Define
+ conditionally.
+
+2020-11-23 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/97948
+ * testsuite/29_atomics/atomic_float/wait_notify.cc: Add options
+ for libatomic.
+ * testsuite/29_atomics/atomic_integral/wait_notify.cc: Likewise.
+ * testsuite/29_atomics/atomic_ref/wait_notify.cc: Likewise.
+
+2020-11-21 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/bits/atomic_base.h (atomic_flag::wait): Use correct
+ type for __atomic_wait call.
+ * include/bits/atomic_timed_wait.h (__atomic_wait_until): Check
+ _GLIBCXX_HAVE_LINUX_FUTEX.
+ * include/bits/atomic_wait.h (__atomic_notify): Likewise.
+ * include/bits/semaphore_base.h (_GLIBCXX_HAVE_POSIX_SEMAPHORE):
+ Only define if SEM_VALUE_MAX or _POSIX_SEM_VALUE_MAX is defined.
+ * testsuite/29_atomics/atomic/wait_notify/bool.cc: Disable on
+ non-linux targes.
+ * testsuite/29_atomics/atomic/wait_notify/generic.cc: Likewise.
+ * testsuite/29_atomics/atomic/wait_notify/pointers.cc: Likewise.
+ * testsuite/29_atomics/atomic_flag/wait_notify/1.cc: Likewise.
+ * testsuite/29_atomics/atomic_float/wait_notify.cc: Likewise.
+
+2020-11-20 Thomas Rodgers <trodgers@redhat.com>
+
+ * include/Makefile.am (bits_headers): Add new header.
+ * include/Makefile.in: Regenerate.
+ * include/bits/atomic_base.h (__atomic_flag::wait): Define.
+ (__atomic_flag::notify_one): Likewise.
+ (__atomic_flag::notify_all): Likewise.
+ (__atomic_base<_Itp>::wait): Likewise.
+ (__atomic_base<_Itp>::notify_one): Likewise.
+ (__atomic_base<_Itp>::notify_all): Likewise.
+ (__atomic_base<_Ptp*>::wait): Likewise.
+ (__atomic_base<_Ptp*>::notify_one): Likewise.
+ (__atomic_base<_Ptp*>::notify_all): Likewise.
+ (__atomic_impl::wait): Likewise.
+ (__atomic_impl::notify_one): Likewise.
+ (__atomic_impl::notify_all): Likewise.
+ (__atomic_float<_Fp>::wait): Likewise.
+ (__atomic_float<_Fp>::notify_one): Likewise.
+ (__atomic_float<_Fp>::notify_all): Likewise.
+ (__atomic_ref<_Tp>::wait): Likewise.
+ (__atomic_ref<_Tp>::notify_one): Likewise.
+ (__atomic_ref<_Tp>::notify_all): Likewise.
+ (atomic_wait<_Tp>): Likewise.
+ (atomic_wait_explicit<_Tp>): Likewise.
+ (atomic_notify_one<_Tp>): Likewise.
+ (atomic_notify_all<_Tp>): Likewise.
+ * include/bits/atomic_wait.h: New file.
+ * include/bits/atomic_timed_wait.h: New file.
+ * include/bits/semaphore_base.h: New file.
+ * include/std/atomic (atomic<bool>::wait): Define.
+ (atomic<bool>::wait_one): Likewise.
+ (atomic<bool>::wait_all): Likewise.
+ (atomic<_Tp>::wait): Likewise.
+ (atomic<_Tp>::wait_one): Likewise.
+ (atomic<_Tp>::wait_all): Likewise.
+ (atomic<_Tp*>::wait): Likewise.
+ (atomic<_Tp*>::wait_one): Likewise.
+ (atomic<_Tp*>::wait_all): Likewise.
+ * include/std/latch: New file.
+ * include/std/semaphore: New file.
+ * include/std/version: Add __cpp_lib_semaphore and
+ __cpp_lib_latch defines.
+ * testsuite/29_atomics/atomic/wait_notify/bool.cc: New test.
+ * testsuite/29_atomics/atomic/wait_notify/pointers.cc: Likewise.
+ * testsuite/29_atomics/atomic/wait_notify/generic.cc: Liekwise.
+ * testsuite/29_atomics/atomic_flag/wait_notify/1.cc: Likewise.
+ * testsuite/29_atomics/atomic_float/wait_notify.cc: Likewise.
+ * testsuite/29_atomics/atomic_integral/wait_notify.cc: Likewise.
+ * testsuite/29_atomics/atomic_ref/wait_notify.cc: Likewise.
+ * testsuite/30_threads/semaphore/1.cc: New test.
+ * testsuite/30_threads/semaphore/2.cc: Likewise.
+ * testsuite/30_threads/semaphore/least_max_value_neg.cc: Likewise.
+ * testsuite/30_threads/semaphore/try_acquire.cc: Likewise.
+ * testsuite/30_threads/semaphore/try_acquire_for.cc: Likewise.
+ * testsuite/30_threads/semaphore/try_acquire_posix.cc: Likewise.
+ * testsuite/30_threads/semaphore/try_acquire_until.cc: Likewise.
+ * testsuite/30_threads/latch/1.cc: New test.
+ * testsuite/30_threads/latch/2.cc: New test.
+ * testsuite/30_threads/latch/3.cc: New test.
+ * testsuite/util/atomic/wait_notify_util.h: New File.
+
+2020-11-20 François Dumont <fdumont@gcc.gnu.org>
+
+ PR libstdc++/83938
+ * include/bits/stl_tempbuf.h (get_temporary_buffer): Change __len
+ computation in the loop to avoid truncation.
+ * include/bits/stl_algo.h:
+ (__inplace_merge): Take temporary buffer length from smallest range.
+ (__stable_sort): Limit temporary buffer length.
+ * testsuite/25_algorithms/inplace_merge/1.cc (test4): New.
+ * testsuite/performance/25_algorithms/stable_sort.cc: Test stable_sort
+ under different heap memory conditions.
+ * testsuite/performance/25_algorithms/inplace_merge.cc: New test.
+
+2020-11-20 François Dumont <fdumont@gcc.gnu.org>
+
+ * include/bits/move.h (_GLIBCXX_FWDREF): New.
+ * include/bits/stl_tree.h: Adapt to use latter.
+ (_Rb_tree<>::_M_clone_node): Add _MoveValue template parameter.
+ (_Rb_tree<>::_M_mbegin): New.
+ (_Rb_tree<>::_M_begin): Use latter.
+ (_Rb_tree<>::_M_copy): Add _MoveValues template parameter.
+ * testsuite/23_containers/map/allocator/move_cons.cc: New test.
+ * testsuite/23_containers/multimap/allocator/move_cons.cc: New test.
+ * testsuite/23_containers/multiset/allocator/move_cons.cc: New test.
+ * testsuite/23_containers/set/allocator/move_cons.cc: New test.
+
+2020-11-20 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/92546
+ * include/std/regex (pmr::smatch, pmr::wsmatch): Declare using
+ underlying __normal_iterator type, not nested typedef
+ basic_string::const_iterator.
+
+2020-11-19 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/95989
+ * config/os/gnu-linux/os_defines.h (_GLIBCXX_NATIVE_THREAD_ID):
+ Define new macro to get reliable thread ID.
+ * include/bits/std_thread.h: (this_thread::get_id): Use new
+ macro if it's defined.
+ * testsuite/30_threads/jthread/95989.cc: New test.
+ * testsuite/30_threads/this_thread/95989.cc: New test.
+
+2020-11-19 Jonathan Wakely <jwakely@redhat.com>
+
+ * testsuite/30_threads/async/async.cc: Include <thread>.
+ * testsuite/30_threads/future/members/93456.cc: Likewise.
+
+2020-11-19 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/92546
+ * include/Makefile.am: Add new <bits/std_thread.h> header.
+ * include/Makefile.in: Regenerate.
+ * include/std/future: Include new header instead of <thread>.
+ * include/std/stop_token: Include new header instead of
+ <bits/gthr.h>.
+ (stop_token::_S_yield()): Use this_thread::yield().
+ (_Stop_state_t::_M_requester): Change type to std::thread::id.
+ (_Stop_state_t::_M_request_stop()): Use this_thread::get_id().
+ (_Stop_state_t::_M_remove_callback(_Stop_cb*)): Likewise.
+ Use __is_single_threaded() to decide whether to synchronize.
+ * include/std/thread (thread, operator==, this_thread::get_id)
+ (this_thread::yield): Move to new header.
+ (operator<=>, operator!=, operator<, operator<=, operator>)
+ (operator>=, hash<thread::id>, operator<<): Define even when
+ gthreads not available.
+ * src/c++11/thread.cc: Include <memory>.
+ * include/bits/std_thread.h: New file.
+ (thread, operator==, this_thread::get_id, this_thread::yield):
+ Define even when gthreads not available.
+ [!_GLIBCXX_HAS_GTHREADS] (thread::join, thread::detach)
+ (thread::hardware_concurrency): Define inline.
+
+2020-11-19 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/93421
+ PR libstdc++/93456
+ * src/c++11/futex.cc (syscall_time_t): New typedef for
+ the type of the syscall_timespec::tv_sec member.
+ (relative_timespec, _M_futex_wait_until)
+ (_M_futex_wait_until_steady): Use syscall_time_t in overflow
+ checks, not time_t.
+
+2020-11-18 Patrick Palka <ppalka@redhat.com>
+
+ * include/std/ranges (join_view::_Iterator::_M_satisfy): Uglify
+ local variable inner.
+ (join_view::_Iterator::operator->): Use _Inner_iter instead of
+ _Outer_iter in the function signature as per LWG 3500.
+ * testsuite/std/ranges/adaptors/join.cc (test08): Test it.
+
+2020-11-17 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/93421
+ * acinclude.m4 (GLIBCXX_ENABLE_LIBSTDCXX_TIME): Fail if struct
+ timespec isn't compatible with SYS_clock_gettime.
+ * configure: Regenerate.
+ * src/c++11/chrono.cc: Revert changes for time64 compatibility.
+ Add static_assert instead.
+ * src/c++11/futex.cc (_M_futex_wait_until_steady): Assume
+ SYS_clock_gettime can use struct timespec.
+
+2020-11-17 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/97869
+ * include/precompiled/stdc++.h: Include <coroutine>.
+ * include/std/version (__cpp_lib_span): Check __cpp_lib_concepts
+ before defining.
+
+2020-11-17 Patrick Palka <ppalka@redhat.com>
+
+ PR libstdc++/97828
+ * include/bits/ranges_algo.h (__search_n_fn::operator()): Check
+ random_access_iterator before using the backtracking
+ implementation. When the backwards scan fails prematurely,
+ reset __remainder appropriately.
+ * testsuite/25_algorithms/search_n/97828.cc: New test.
+
+2020-11-16 Jonathan Wakely <jwakely@redhat.com>
+
+ * src/Makefile.am (libstdc++-symbols.ver-sun): Remove -lrt from
+ arguments passed to make_sunver.pl script.
+ * src/Makefile.in: Regenerate.
+
+2020-11-15 Jason Merrill <jason@redhat.com>
+
+ * testsuite/20_util/result_of/sfinae_friendly_1.cc: Adjust.
+
2020-11-13 Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/93421
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