+2020-07-01 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/94627
+ * include/bits/regex.h (operator==, operator!=): Remove noexcept
+ equality comparisons for match_results.
+ * testsuite/28_regex/match_results/94627.cc: New test.
+
+2020-07-01 Martin Sebor <msebor@redhat.com>
+
+ * testsuite/21_strings/basic_string_view/cons/char/nonnull.cc: Adjust
+ text of expected warning.
+ * testsuite/21_strings/basic_string_view/cons/wchar_t/nonnull.cc: Same.
+ * testsuite/21_strings/basic_string_view/operations/compare/char/nonnull.cc: Same.
+ * testsuite/21_strings/basic_string_view/operations/find/char/nonnull.cc: Same.
+ * testsuite/21_strings/basic_string_view/operations/rfind/char/nonnull.cc: Same.
+
+2020-06-29 Ville Voutilainen <ville.voutilainen@gmail.com>
+
+ Revert:
+ 2020-06-28 Ville Voutilainen <ville.voutilainen@gmail.com>
+
+ * include/bits/basic_string.h (string(_CharT*, const _Alloc&)):
+ Add a __nonnull__ attribute.
+ * testsuite/21_strings/basic_string/cons/char/nonnull.cc: New.
+ * testsuite/21_strings/basic_string/cons/wchar_t/nonnull.cc: Likewise.
+
+2020-06-28 Ville Voutilainen <ville.voutilainen@gmail.com>
+
+ * include/bits/basic_string.h (string(_CharT*, const _Alloc&)):
+ Add a __nonnull__ attribute.
+ * testsuite/21_strings/basic_string/cons/char/nonnull.cc: New.
+ * testsuite/21_strings/basic_string/cons/wchar_t/nonnull.cc: Likewise.
+
+2020-06-28 Ville Voutilainen <ville.voutilainen@gmail.com>
+
+ PR libstdc++/95915
+ * include/std/type_traits (is_literal_type, is_literal_type_v):
+ Deprecate in C++17.
+ * include/std/variant (_Uninitialized):
+ Adjust the condition and the comment.
+ * testsuite/20_util/is_literal_type/deprecated-1z.cc: New.
+ * testsuite/20_util/is_literal_type/requirements/explicit_instantiation.cc:
+ Adjust.
+ * testsuite/20_util/is_literal_type/requirements/typedefs.cc: Likewise.
+ * testsuite/20_util/is_literal_type/value.cc: Likewise.
+ * testsuite/20_util/optional/constexpr/nullopt.cc:
+ Use __is_literal_type directly.
+ * testsuite/20_util/optional/nullopt.cc: Likewise.
+ * testsuite/20_util/variable_templates_for_traits.cc: Adjust.
+ * testsuite/20_util/variant/95915.cc: New.
+ * testsuite/20_util/variant/compile.cc: Add new test.
+ * testsuite/experimental/optional/constexpr/nullopt.cc:
+ Use __is_literal_type directly.
+ * testsuite/experimental/optional/nullopt.cc: Likewise.
+ * testsuite/experimental/type_traits/value.cc: Adjust.
+ * testsuite/util/testsuite_common_types.h:
+ Use __is_literal_type directly.
+
+2020-06-24 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/std/charconv (__from_chars_binary): Ignore leading zeros.
+ * testsuite/20_util/from_chars/1.cc: Check "0x1" for all bases,
+ not just 10 and 16.
+ * testsuite/20_util/from_chars/3.cc: New test.
+
+2020-06-24 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/bits/stl_algobase.h (__find_if): Add FALLTHRU markers.
+ * include/std/charconv (__detail::__to_chars): Avoid
+ -Wsign-compare warning.
+
+2020-06-24 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/95851
+ * include/std/charconv (__to_chars_i): Check for zero-sized
+ buffer unconditionally.
+ * testsuite/20_util/to_chars/95851.cc: New test.
+
+2020-06-23 Jonathan Wakely <jwakely@redhat.com>
+
+ * testsuite/20_util/from_chars/1_c++20_neg.cc: Check enumeration
+ type.
+ * testsuite/20_util/from_chars/1_neg.cc: Likewise. Move dg-error
+ directives outside preprocessor condition.
+
+2020-06-23 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/95832
+ * include/std/variant (__detail::__variant::_Build_FUN): Remove
+ partial specialization to prevent narrowing conversions to bool.
+ * testsuite/20_util/variant/compile.cc: Test non-narrowing
+ conversions to bool.
+ * testsuite/20_util/variant/run.cc: Likewise.
+
+2020-06-23 Jonathan Wakely <jwakely@redhat.com>
+
+ * doc/Makefile.in: Regenerate.
+ * include/Makefile.in: Regenerate.
+ * libsupc++/Makefile.in: Regenerate.
+ * po/Makefile.in: Regenerate.
+ * python/Makefile.in: Regenerate.
+ * src/Makefile.in: Regenerate.
+ * src/c++11/Makefile.in: Regenerate.
+ * src/c++17/Makefile.in: Regenerate.
+ * src/c++98/Makefile.in: Regenerate.
+ * src/filesystem/Makefile.in: Regenerate.
+ * testsuite/Makefile.in: Regenerate.
+
+2020-06-22 David Edelsohn <dje.gcc@gmail.com>
+
+ * Makefile.am: Use -include.
+ * Makefile.in: Regenerate.
+
+2020-06-21 David Edelsohn <dje.gcc@gmail.com>
+
+ * Makefile.am (tmake_file): Build and install AIX-style FAT libraries.
+ * Makefile.in: Regenerate.
+ * configure.ac (tmake_file): Substitute.
+ * configure: Regenerate.
+ * configure.host (aix*): Define tmake_file.
+ * config/os/aix/t-aix: New file.
+
+2020-06-20 Jason Merrill <jason@redhat.com>
+
+ * testsuite/24_iterators/move_iterator/rel_ops_c++20.cc:
+ Remove greedy_ops tests.
+ * testsuite/24_iterators/reverse_iterator/rel_ops_c++20.cc:
+ Remove greedy_ops tests.
+
+2020-06-19 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/95765
+ * include/bits/stl_algobase.h (__size_to_integer(float))
+ (__size_to_integer(double), __size_to_integer(long double))
+ (__size_to_integer(__float128)): Cast return type explicitly.
+ * include/bits/stl_uninitialized.h (__uninitialized_default_1<true>):
+ Remove unused typedef.
+
+2020-06-19 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/bits/stl_pair.h (_Index_tuple): Remove redundant
+ namespace qualification.
+ (pair::pair(tuple<>&, tuple<>&, _Index_tuple, _Index_tuple)):
+ Likewise.
+ * include/std/tuple (_Head_base, _Tuple_impl, tuple_size)
+ (tuple_element, __get_helper, get, __make_tuple_impl)
+ (__make_1st_indices, __tuple_concater)
+ (pair::pair(tuple<>&, tuple<>&, _Index_tuple, _Index_tuple)):
+ Likewise.
+ * include/std/utility (tuple_element, __is_tuple_like_impl)
+ (tuple_size, __pair_get, get): Likewise.
+
+2020-06-19 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/bits/std_function.h (function): Define all member
+ functions inline.
+
+2020-06-19 Marc Glisse <marc.glisse@inria.fr>
+
+ * include/bits/stl_algo.h (__includes): Simplify the code.
+
+2020-06-19 Marc Glisse <marc.glisse@inria.fr>
+
+ * include/std/optional (optional()): Explicitly define it.
+
+2020-06-17 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/94540
+ * include/bits/stl_uninitialized.h (__uninitialized_default_1<true>):
+ Construct the first value at *__first instead of on the stack.
+ (__uninitialized_default_n_1<true>): Likewise.
+ Improve comments on several of the non-standard algorithms.
+ * testsuite/20_util/specialized_algorithms/uninitialized_default/94540.cc:
+ New test.
+ * testsuite/20_util/specialized_algorithms/uninitialized_default_n/94540.cc:
+ New test.
+ * testsuite/20_util/specialized_algorithms/uninitialized_value_construct/94540.cc:
+ New test.
+ * testsuite/20_util/specialized_algorithms/uninitialized_value_construct_n/94540.cc:
+ New test.
+ * testsuite/23_containers/vector/cons/94540.cc: New test.
+
+2020-06-17 Jonathan Wakely <jwakely@redhat.com>
+
+ * testsuite/20_util/specialized_algorithms/uninitialized_default_n/sizes.cc:
+ Replace Value type with int so trivial code path is used.
+ * testsuite/20_util/specialized_algorithms/uninitialized_value_construct_n/sizes.cc:
+ Likewise.
+
+2020-06-17 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/bits/stl_uninitialized.h (uninitialized_fill_n): Only
+ use std::fill_n when the size is an integral type.
+ (__uninitialized_default_n): Likewise.
+ * testsuite/20_util/specialized_algorithms/uninitialized_default_n/sizes.cc:
+ New test.
+ * testsuite/20_util/specialized_algorithms/uninitialized_fill_n/sizes.cc:
+ New test.
+ * testsuite/20_util/specialized_algorithms/uninitialized_value_construct_n/sizes.cc:
+ New test.
+
+2020-06-16 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/95282
+ * include/bits/atomic_base.h (__atomic_impl::load): Use the _Val
+ alias instead of deducing _Tp as an unqualified type.
+ (__atomic_impl::exchange): Use the _Val alias to remove volatile
+ from the reinterpret_cast result type.
+
+2020-06-16 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/std/atomic (atomic): Add static assertions.
+ * testsuite/29_atomics/atomic/requirements/types_neg.cc: New test.
+
+2020-06-16 Patrick Palka <ppalka@redhat.com>
+
+ PR libstdc++/94003
+ * testsuite/20_util/is_constructible/94003.cc: New test.
+
+2020-06-15 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/bits/char_traits.h (__cpp_lib_constexpr_char_traits):
+ Update value for C++20.
+ * include/std/version (__cpp_lib_constexpr_char_traits): Likewise.
+ * testsuite/21_strings/char_traits/requirements/constexpr_functions_c++17.cc:
+ Update expected value.
+ * testsuite/21_strings/char_traits/requirements/constexpr_functions_c++20.cc:
+ Likewise.
+
+2020-06-15 Paul Keir <paul.keir@uws.ac.uk>
+
+ * include/bits/char_traits.h (char_traits::move): constexpr move with
+ overlap was using copy_backward incorrectly.
+ * testsuite/21_strings/char_traits/requirements/constexpr_functions_c++20.cc:
+ New test.
+
+2020-06-12 Jonathan Wakely <jwakely@redhat.com>
+
+ * testsuite/29_atomics/atomic_flag/clear/1.cc: Also test clear()
+ when the value is currently set.
+ * testsuite/29_atomics/atomic_flag/test_and_set/explicit.cc:
+ Actually check the return value.
+ * testsuite/29_atomics/atomic_flag/test_and_set/implicit.cc:
+ Likewise.
+
+2020-06-12 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/bits/atomic_base.h (atomic_flag::test): Add missing
+ const qualifiers.
+ * testsuite/29_atomics/atomic_flag/test/explicit.cc: Add
+ dg-options and verify results of test function.
+ * testsuite/29_atomics/atomic_flag/test/implicit.cc: Likewise.
+
+2020-06-11 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/94749
+ * include/bits/istream.tcc (basic_istream::ignore(streamsize, CharT)):
+ Only discard an extra character if we didn't already reach the
+ maximum number.
+ * src/c++98/istream.cc (istream::ignore(streamsiz, char))
+ (wistream::ignore(streamsize, wchar_t)): Likewise.
+ * testsuite/27_io/basic_istream/ignore/char/94749.cc: New test.
+ * testsuite/27_io/basic_istream/ignore/wchar_t/94749.cc: New test.
+
+2020-06-10 Patrick Palka <ppalka@redhat.com>
+
+ PR libstdc++/95578
+ * include/bits/ranges_algo.h (__lexicographical_compare_fn):
+ Also check that the iterator and sentinel have the same type before
+ applying the unwrapping optimization for __normal_iterator.
+ Split the check into two, one for the first iterator/sentinel
+ pair and another for second iterator/sentinel pair. Remove uses
+ of __niter_base, and remove uses of std::move on a
+ __normal_iterator.
+ * include/bits/ranges_algobase.h (__equal_fn): Likewise.
+ (__copy_or_move): Likewise. Perform similar adjustments for
+ the reverse_iterator and move_iterator optimizations. Inline
+ the checks into the if-constexprs, and use using-declarations to
+ make them less visually noisy. Remove uses of __niter_wrap.
+ (__copy_or_move_backward): Likewise.
+ * testsuite/25_algorithms/copy/95578.cc: New test.
+ * testsuite/25_algorithms/copy_backward/95578.cc: New test.
+ * testsuite/25_algorithms/equal/95578.cc: New test.
+ * testsuite/25_algorithms/lexicographical_compare/95578.cc: New test.
+ * testsuite/25_algorithms/move/95578.cc: New test.
+ * testsuite/25_algorithms/move_backward/95578.cc: New test.
+
+2020-06-10 François Dumont <fdumont@gcc.gnu.org>
+ Jonathan Wakely <jwakely@redhat.com>
+
+ * include/bits/deque.tcc (__lex_cmp_dit): New.
+ (__lexicographical_compare_aux1): Define overloads for deque
+ iterators.
+ * include/bits/stl_algobase.h (__lexicographical_compare::__3way):
+ New static member function.
+ (__lexicographical_compare<true>::__3way): Likewise.
+ (__lexicographical_compare<true>::__lc): Use __3way.
+ (__lexicographical_compare_aux): Rename to
+ __lexicographical_compare_aux1 and declare overloads for deque
+ iterators.
+ (__lexicographical_compare_aux): Define new forwarding function
+ that calls __lexicographical_compare_aux1 and declare new overloads
+ for safe iterators.
+ (lexicographical_compare): Do not use __niter_base on
+ parameters.
+ * include/debug/safe_iterator.tcc
+ (__lexicographical_compare_aux): Define overloads for safe
+ iterators.
+ * testsuite/25_algorithms/lexicographical_compare/1.cc: Add
+ checks with random access iterators.
+ * testsuite/25_algorithms/lexicographical_compare/deque_iterators/1.cc:
+ New test.
+
+2020-06-09 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/bits/stl_iterator.h (move_iterator::operator=): Define.
+ * testsuite/24_iterators/move_iterator/dr3265.cc: New test.
+
+2020-06-09 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/std/optional (bad_optional_access): Define default
+ constructor and destructor as defaulted.
+ * testsuite/20_util/optional/bad_access.cc: New test.
+
+2020-06-08 Jonathan Wakely <jwakely@redhat.com>
+
+ * testsuite/20_util/default_delete/48631_neg.cc: Adjust dg-error
+ line number.
+ * testsuite/20_util/default_delete/void_neg.cc: Likewise.
+
+2020-06-08 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/bits/unique_ptr.h (operator<<): Define for C++20.
+ * testsuite/20_util/unique_ptr/io/lwg2948.cc: New test.
+
+2020-06-04 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/bits/iterator_concepts.h (__detail::__ptr, __detail::__ref)
+ (__detail::__cat, __detail::__diff): Move to class scope in the
+ relevant __iterator_traits specializations.
+ (__iterator_traits<>): Use nested class templates instead of ones from
+ namespace __detail.
+ * include/bits/stl_iterator.h (__detail::__common_iter_ptr): Move to
+ class scope in iterator_traits<common_iterator<I, S>>.
+ (iterator_traits<common_iterator<I, S>>): Use nested class template
+ instead of __detail::__common_iter_ptr.
+
+2020-06-04 François Dumont <fdumont@gcc.gnu.org>
+
+ * include/bits/stl_algo.h (__copy_n_a): Move to ...
+ * include/bits/stl_algobase.h (__copy_n_a): ...here. Add __strict
+ parameter.
+ (__copy_n_a(istreambuf_iterator<>, _Size, _Deque_iterator<>, bool)):
+ Declare.
+ (__niter_base(const _Safe_iterator<_Ite, _Seq,
+ random_access_iterator_tag>&)): Declare.
+ (__copy_move_a2(istreambuf_iterator<>, istreambuf_iterator<>,
+ _Deque_iterator<>)): Declare.
+ * include/bits/deque.tcc
+ (__copy_move_a2(istreambuf_iterator<>, istreambuf_iterator<>,
+ _Deque_iterator<>)): New.
+ (__copy_n_a(istreambuf_iterator<>, _Size, _Deque_iterator<>, bool)):
+ New.
+ * include/bits/streambuf_iterator.h
+ (__copy_n_a(istreambuf_iterator<>, _Size, _CharT*, bool)): Adapt.
+ * include/debug/safe_iterator.tcc (__niter_base): New.
+ * testsuite/25_algorithms/copy/streambuf_iterators/char/4.cc
+ (test03): New.
+ * testsuite/25_algorithms/copy/streambuf_iterators/char/debug/deque_neg.cc:
+ New test.
+ * testsuite/25_algorithms/copy_n/debug/istreambuf_ite_deque_neg.cc:
+ New test.
+ * testsuite/25_algorithms/copy_n/istreambuf_iterator/2.cc: New test.
+ * testsuite/25_algorithms/copy_n/istreambuf_iterator/deque.cc:
+ New test.
+
+2020-06-04 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/bits/ranges_algobase.h (__copy_n_fn): Only call
+ ranges::copy for positive values.
+ * include/bits/stl_algo.h (copy_n): Convert Size argument to an
+ integral type and only call __copy_n for positive values.
+ * testsuite/util/testsuite_iterators.h
+ (random_access_iterator_wrapper::operator+=): Fix range check for
+ negative values.
+ (output_container, input_container, forward_container)
+ (bidirectional_container, random_access_container): New alias
+ templates.
+ * testsuite/25_algorithms/copy_n/5.cc: New test.
+
+2020-06-02 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/90102
+ * include/debug/deque (deque(const _Base&)): Replace parameter
+ with a struct that wraps a const _Base&.
+ * include/debug/forward_list (forward_list(_Base_ref)): New
+ constructor.
+ * include/debug/list (list(const _Base&)): Replace parameter
+ with a struct that wraps a const _Base&.
+ * include/debug/map.h (map(const _Base&)): Likewise.
+ * include/debug/multimap.h (multimap(const _Base&)): Likewise.
+ * include/debug/multiset.h (multiset(const _Base&)): Likewise.
+ * include/debug/set.h (set(const _Base&)): Likewise.
+ * include/debug/unordered_map (unordered_map(const _Base&))
+ (unordered_multimap(const _Base&)): Likewise.
+ * include/debug/unordered_set (unordered_set(const _Base&))
+ (unordered_multiset(const _Base&)): Likewise.
+ * testsuite/23_containers/vector/cons/destructible_debug_neg.cc:
+ Adjust dg-error line number.
+ * include/debug/vector (vector(const _Base&)): Likewise.
+ * testsuite/23_containers/deque/debug/90102.cc: New test.
+ * testsuite/23_containers/forward_list/debug/90102.cc: New test.
+ * testsuite/23_containers/list/debug/90102.cc: New test.
+ * testsuite/23_containers/map/debug/90102.cc: New test.
+ * testsuite/23_containers/multimap/debug/90102.cc: New test.
+ * testsuite/23_containers/multiset/debug/90102.cc: New test.
+ * testsuite/23_containers/set/debug/90102.cc: New test.
+ * testsuite/23_containers/unordered_map/debug/90102.cc: New test.
+ * testsuite/23_containers/unordered_multimap/debug/90102.cc: New test.
+ * testsuite/23_containers/unordered_multiset/debug/90102.cc: New test.
+ * testsuite/23_containers/unordered_set/debug/90102.cc: New test.
+ * testsuite/23_containers/vector/debug/90102.cc: New test.
+
+2020-06-01 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/95392
+ * include/bits/fs_path.h (path::_S_to_string): Move to
+ namespace-scope and rename to ...
+ (__detail::__string_from_range): ... this.
+ [WINDOWS] (__detail::__wstr_from_utf8): New function template to
+ convert a char sequence containing UTF-8 to wstring.
+ (path::_S_convert(Iter, Iter)): Adjust call to _S_to_string.
+ (path::_S_convert_loc(Iter, Iter, const locale&)): Likewise.
+ (u8path(InputIterator, InputIterator)) [WINDOWS]: Use
+ __string_from_range to obtain a contiguous range and
+ __wstr_from_utf8 to obtain a wide string.
+ (u8path(const Source&)) [WINDOWS]: Use __effective_range to
+ obtain a contiguous range and __wstr_from_utf8 to obtain a wide
+ string.
+ (path::_S_convert(const _EcharT*, const _EcharT)) [WINDOWS]:
+ Use __wstr_from_utf8.
+
+2020-06-01 Jonathan Wakely <jwakely@redhat.com>
+
+ * testsuite/util/testsuite_iterators.h:
+ (input_iterator_wrapper::operator++(int)): Return proxy object.
+
+2020-06-01 Jonathan Wakely <jwakely@redhat.com>
+
+ * doc/xml/manual/evolution.xml: Document deprecation of
+ __is_nullptr_t and removal of std::allocator members.
+ * doc/html/manual/api.html: Regenerate.
+
+2020-06-01 Jonathan Wakely <jwakely@redhat.com>
+
+ * doc/xml/manual/containers.xml: Replace <xref> with <link>.
+ * doc/xml/manual/evolution.xml: Likewise.
+ * doc/html/manual/api.html: Regenerate.
+ * doc/html/manual/containers.html: Regenerate.
+
+2020-06-01 Gerald Pfeifer <gerald@pfeifer.com>
+
+ * doc/xml/faq.xml: Adjust Valgrind reference and remove another.
+ * doc/html/faq.html: Regenerate.
+
+2020-06-01 Gerald Pfeifer <gerald@pfeifer.com>
+
+ * doc/xml/manual/policy_data_structures_biblio.xml: Remove
+ stray change.
+
+2020-06-01 Gerald Pfeifer <gerald@pfeifer.com>
+
+ * doc/xml/manual/policy_data_structures_biblio.xml: Switch
+ www.cs.princeton.edu to https.
+ * doc/html/manual/policy_data_structures.html: Regenerate.
+
+2020-05-31 Douglas B Rupp <douglas.b.rupp@gmail.com>
+
+ * crossconfig.m4 (<*-vxworks>): Check for more math decls.
+ * configure: Rebuild.
+
+2020-05-29 H.J. Lu <hjl.tools@gmail.com>
+
+ PR bootstrap/95413
+ * configure: Regenerated.
+
+2020-05-29 François Dumont <fdumont@gcc.gnu.org>
+
+ PR libstdc++/95079
+ * include/bits/hashtable_policy.h (_Insert_base<>::try_emplace): New.
+ * include/bits/unordered_map.h (unordered_map<>::try_emplace): Adapt.
+ (unordered_map<>::insert_or_assign): Adapt.
+
+2020-05-27 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/95282
+ * include/bits/atomic_base.h (__atomic_impl::load): Add
+ cv-qualifiers to parameter so that _Tp is deduced as the
+ unqualified type.
+ * testsuite/29_atomics/atomic_float/95282.cc: New test.
+
+2020-05-27 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/95322
+ * include/std/ranges (transform_view::_Sentinel): Allow hidden
+ friends to work with _Iterator<true> and _Iterator<false>.
+ (join_view::_Sentinel): Likewise.
+ * testsuite/std/ranges/adaptors/95322.cc: New test.
+
+2020-05-27 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/94354
+ * include/bits/stl_iterator.h (reverse_iterator): Fix comparison
+ operators to use the correct operations on the underlying
+ iterators.
+ * testsuite/24_iterators/reverse_iterator/rel_ops.cc: New test.
+
+2020-05-27 Jonathan Wakely <jwakely@redhat.com>
+
+ * testsuite/18_support/comparisons/categories/zero_neg.cc: New test.
+
+2020-05-26 Patrick Palka <ppalka@redhat.com>
+
+ PR libstdc++/95322
+ * include/bits/stl_iterator.h (__detail::_Common_iter_proxy):
+ Remove and instead define it ...
+ (common_iterator::_Proxy): ... here.
+ (common_iterator::operator->): Use it.
+ * testsuite/24_iterators/common_iterator/2.cc: New test.
+ * testsuite/std/ranges/adaptors/95322.cc: New test.
+
+2020-05-23 Patrick Palka <ppalka@redhat.com>
+
+ PR libstdc++/93978
+ * testsuite/std/ranges/adaptors/93978.cc: Add -Wall to
+ dg-additional-options. Avoid unused-but-set-variable warning.
+
+2020-05-23 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/95289
+ * include/debug/helper_functions.h (__get_distance): Only declare
+ as a constexpr function for C++14 and up.
+ * testsuite/25_algorithms/copy/debug/95289.cc: New test.
+
+ * include/bits/fs_path.h (__detail::_S_range_begin)
+ (__detail::_S_range_end, path::_S_string_from_iter): Replace with
+ overloaded function template __detail::__effective_range.
+ (__detail::__effective_range): New overloaded function template to
+ create a basic_string or basic_string_view for an effective range.
+ (__detail::__value_type_is_char): Use __detail::__effective_range.
+ Do not use remove_const on value type.
+ (__detail::__value_type_is_char_or_char8_t): Likewise.
+ (path::path(const Source&, format))
+ (path::path(const Source&, const locale&))
+ (path::operator/=(const Source&), path::append(const Source&))
+ (path::concat(const Source&)): Use __detail::__effective_range.
+ (path::_S_to_string(InputIterator, InputIterator)): New function
+ template to create a string view if possible, or string otherwise.
+ (path::_S_convert): Add overloads that convert a string returned
+ by __detail::__effective_range. Use if-constexpr to inline conversion
+ logic from all overloads of _Cvt::_S_convert.
+ (path::_S_convert_loc): Add overload that converts a string. Use
+ _S_to_string to avoid allocation when possible.
+ (path::_Cvt): Remove.
+ (path::operator+=(CharT)): Remove indirection through path::concat.
+ * include/experimental/bits/fs_path.h (path::_S_convert_loc): Add
+ overload for non-const pointers, to avoid constructing a std::string.
+ * src/c++17/fs_path.cc (path::_S_convert_loc): Replace conditional
+ compilation with call to _S_convert.
+
+ * include/bits/fs_path.h (__detail::_S_range_begin)
+ (__detail::_S_range_end): Remove unintentional static specifiers.
+ * include/experimental/bits/fs_path.h (__detail::_S_range_begin)
+ (__detail::_S_range_end): Likewise.
+
+ * include/bits/fs_path.h (filesystem::__detail::__is_encoded_char):
+ Replace alias template with variable template. Don't remove const.
+ (filesystem::__detail::__is_path_src): Replace overloaded function
+ template with variable template and specializations.
+ (filesystem::__detail::__is_path_iter_src): Replace alias template
+ with class template.
+ (filesystem::__detail::_Path): Use __is_path_src. Remove support for
+ iterator pairs.
+ (filesystem::__detail::_Path2): New alias template for checking
+ InputIterator requirements.
+ (filesystem::__detail::__constructible_from): Remove.
+ (filesystem::path): Replace _Path<Iter, Iter> with _Path2<Iter>.
+ * testsuite/27_io/filesystem/path/construct/80762.cc: Check with two
+ constructor arguments of void and void* types.
+
+2020-05-21 Matthias Kretz <kretz@kde.org>
+
+ * testsuite/Makefile.am: Remove dup target_triplet and set tool,
+ allowing runtest to work without arguments.
+ * testsuite/Makefile.in: Regenerate.
+
+2020-05-21 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/93983
+ * include/bits/iterator_concepts.h (__detail::__cpp17_iterator):
+ Reorder constraints to avoid recursion when constructors use
+ iterator_traits (LWG 3420).
+ * testsuite/24_iterators/customization_points/lwg3420.cc: New test.
+
+ * include/experimental/socket (basic_socket::is_open()
+ (basic_socket_acceptor::is_open()): Use _GLIBCXX_NODISCARD macro.
+
+ * include/experimental/bits/net.h (__endpoint, __protocol)
+ (__acceptable_protocol, __inet_protocol): New concepts.
+ (__detail::__is_endpoint): Move trait from <experimental/socket>.
+ (__is_protocol, __is_acceptable_protocol, __is_inet_protocol): New
+ traits.
+ (__endpoint, __protocol, __acceptable_protocol): New variable
+ templates.
+ * include/experimental/socket (__is_endpoint): Move to net.h header.
+ (basic_socket, basic_socket_acceptor): Check requirements.
+
+ * include/experimental/executor (use_future_t::use_future_t()): Fix
+ incorrect noexcept-specifier.
+ * include/experimental/internet (basic_resolver_results): Adjust
+ whitespace.
+ * include/experimental/socket (__basic_socket_impl::release): Add
+ member function.
+ (basic_socket(io_context&, const endpoint_type&)): Fix argument to
+ target constructor.
+ (basic_socket::release(), basic_socket::release(error_code&)): Add
+ missing member functions.
+ (basic_socket::is_open()): Add nodiscard attribute.
+ (basic_socket::close(error_code&)): Pass argument to base function.
+ (basic_socket_acceptor::release())
+ (basic_socket_acceptor::release(error_code&)): Add missing member
+ functions.
+ (basic_socket_acceptor::is_open()): Add nodiscard attribute.
+ (basic_socket_streambuf::error()): Add noexcept.
+ (basic_socket_iostream::error()): Likewise.
+ * testsuite/experimental/net/socket/basic_socket.cc: New test.
+
+ * include/experimental/buffer: Replace typedefs with
+ alias-declarations.
+ * include/experimental/executor: Likewise.
+ * include/experimental/internet: Likewise.
+ * include/experimental/socket: Likewise.
+ * include/experimental/timer: Likewise.
+
+2020-05-19 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/94087
+ * src/c++11/random.cc (__x86_rdseed): Allow fallback function to be
+ passed in.
+ (__x86_rdseed_rdrand): New function that uses rdseed with rdrand
+ fallback.
+ (random_device::_M_init): Use __x86_rdseed_rdrand when both
+ instructions are available.
+ * testsuite/26_numerics/random/random_device/94087.cc: New test.
+
+2020-05-19 Patrick Palka <ppalka@redhat.com>
+
+ PR c++/66439
+ * testsuite/20_util/pair/astuple/get_neg.cc: Prune "type/value
+ mismatch" messages.
+ * testsuite/20_util/tuple/element_access/get_neg.cc: Likewise.
+
+2020-05-15 H.J. Lu <hongjiu.lu@intel.com>
+
+ PR bootstrap/95147
+ * configure: Regenerated.
+
+2020-05-14 H.J. Lu <hongjiu.lu@intel.com>
+
+ * configure: Regenerated.
+
+2020-05-13 Alexandre Oliva <oliva@adacore.com>
+
+ PR libstdc++/77691
+ * include/experimental/memory_resource
+ (__resource_adaptor_imp::do_allocate): Handle max_align_t on
+ x86-vxworks as on x86-solaris.
+ (__resource_adaptor_imp::do_deallocate): Likewise.
+ * testsuite/experimental/memory_resource/new_delete_resource.cc:
+ Drop xfail.
+ (BAD_MAX_ALIGN_T): Define on x86-vxworks as on x86-solaris.
+ (test03): Drop max-align test for char-aligned alloc.
+
+2020-05-08 Ulrich Drepper <drepper@redhat.com>
+
+ * include/bits/atomic_base.h (atomic_flag): Implement test member
+ function.
+ * include/std/version: Define __cpp_lib_atomic_flag_test.
+ * testsuite/29_atomics/atomic_flag/test/explicit.cc: New file.
+ * testsuite/29_atomics/atomic_flag/test/implicit.cc: New file.
+
+2020-05-07 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/94971 (partial)
+ * include/bits/ranges_algo.h (ranges::__sample_fn): Qualify
+ std::sample using macro to work in parallel mode.
+ (__sort_fn): Likewise for std::sort.
+ (ranges::__nth_element_fn): Likewise for std::nth_element.
+ * include/bits/stl_algobase.h (lexicographical_compare_three_way):
+ Likewise for std::__min_cmp.
+ * include/parallel/algobase.h (lexicographical_compare_three_way):
+ Add to namespace std::__parallel.
+
+ PR c/92472
+ * include/parallel/multiway_merge.h (_GuardedIterator::operator*)
+ (_GuardedIterator::operator _RAIter, _UnguardedIterator::operator*)
+ (_UnguardedIterator::operator _RAIter): Add const qualifier.
+ (operator<(_GuardedIterator&, _GuardedIterator&)
+ (operator<=(_GuardedIterator&, _GuardedIterator&)
+ (operator<(_UnguardedIterator&, _UnguardedIterator&)
+ (operator<=(_UnguardedIterator&, _UnguardedIterator&): Change
+ parameters to const references.
+
+2020-05-07 Eric Botcazou <ebotcazou@adacore.com>
+
+ * config/abi/post/sparc64-linux-gnu/baseline_symbols.txt: Update.
+ * config/abi/post/sparc64-linux-gnu/32/baseline_symbols.txt: Likewise.
+
+2020-05-06 François Dumont <fdumont@gcc.gnu.org>
+
+ * include/bits/stl_algobase.h (struct _Bit_iterator): New declaration.
+ (std::__fill_a1(_Bit_iterator, _Bit_iterator, const bool&)): Likewise.
+ * include/bits/stl_bvector.h (__fill_bvector): Move outside
+ _GLIBCXX_STD_C namespace.
+ (fill(_Bit_iterator, _Bit_iterator, const bool&)): Likewise and rename
+ into...
+ (__fill_a1): ...this.
+ * testsuite/25_algorithms/fill/bvector/1.cc: New.
+
+2020-05-06 H.J. Lu <hongjiu.lu@intel.com>
+
+ * config/abi/post/x86_64-linux-gnu/x32/baseline_symbols.txt: Updated.
+
+2020-05-06 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.
+
+2020-05-06 Martin Liska <mliska@suse.cz>
+
+ Revert:
+ 2020-05-05 Martin Liska <mliska@suse.cz>
+ PR c/92472
+ * include/parallel/multiway_merge.h:
+ Use const for _Compare template argument.
+
+2020-05-06 Jonathan Wakely <jwakely@redhat.com>
+
+ * doc/xml/manual/abi.xml (abi.versioning.history): Document library
+ versions for GCC 9.[123] and 10.1 releases.
+ * doc/html/*: Regenerate.
+
+2020-05-06 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/i386-linux-gnu/baseline_symbols.txt: Update.
+ * config/abi/post/i486-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/powerpc64-linux-gnu/baseline_symbols.txt: Update.
+
+2020-05-05 Martin Liska <mliska@suse.cz>
+
+ PR c/92472
+ * include/parallel/multiway_merge.h:
+ Use const for _Compare template argument.
+
+2020-05-04 Fangrui Song <maskray@google.com>
+
+ * libsupc++/cxxabi.h (__cxa_finalize): Fix return type.
+
+2020-05-04 Jonathan Wakely <jwakely@redhat.com>
+
+ * doc/xml/faq.xml: Use working link for SGI STL FAQ.
+ * doc/html/*: Regenerate.
+
+ PR libstdc++/94906
+ * src/c++17/memory_resource.cc
+ (monotonic_buffer_resource::_Chunk::release): Use size_t for shift
+ operands.
+
+2020-05-04 Nathan Sidwell <nathan@acm.org>
+
+ PR libstdc++/94747
+ * libsupc++/dyncast.cc (__dynamic_cast): Cast offsetof to
+ ptrdiff_t before negation, to show intent more clearly.
+
+2020-05-04 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/94936
+ * src/c++17/memory_resource.cc (synchronized_pool_resource::_TPools):
+ Add comment about single-threaded behaviour.
+ (synchronized_pool_resource::_TPools::move_nonempty_chunks()): Hoist
+ class member access out of loop.
+ (synchronized_pool_resource::synchronized_pool_resource())
+ (synchronized_pool_resource::~synchronized_pool_resource())
+ (synchronized_pool_resource::release()): Check __gthread_active_p
+ before creating and/or deleting the thread-specific data key.
+ (synchronized_pool_resource::_M_thread_specific_pools()): Adjust
+ assertions.
+ (synchronized_pool_resource::do_allocate(size_t, size_t)): Add fast
+ path for single-threaded case.
+ (synchronized_pool_resource::do_deallocate(void*, size_t, size_t)):
+ Likewise. Return if unable to find a pool that owns the allocation.
+ * testsuite/20_util/synchronized_pool_resource/allocate_single.cc:
+ New test.
+ * testsuite/20_util/synchronized_pool_resource/cons_single.cc: New
+ test.
+ * testsuite/20_util/synchronized_pool_resource/release_single.cc: New
+ test.
+
+2020-05-03 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/94933
+ * include/bits/stl_algobase.h (__fill_a1): Make overload for byte types
+ usable in constant expressions.
+ * testsuite/25_algorithms/fill_n/constexpr.cc: Test with bytes and
+ non-scalars.
+
+2020-05-01 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/94901
+ * testsuite/17_intro/badnames.cc: Test values between _E9 and _E24 too.
+
+2020-05-01 Jonathan Wakely <jwakely@redhat.com>
+ Patrick Palka <ppalka@redhat.com>
+
+ PR libstdc++/92894
+ * include/bits/iterator_concepts.h (ranges::__cust_imove::_IMove):
+ Add trait to determine return type and an alias for it.
+ (ranges::__cust_imove::_IMove::operator()): Use __result instead of
+ deduced return type.
+ (iter_rvalue_reference_t): Use _IMove::__type instead of checking
+ the result of ranges::iter_move.
+ (__detail::__indirectly_readable_impl): Use iter_rvalue_reference_t
+ instead of checking the result of ranges::iter_move.
+ * testsuite/24_iterators/customization_points/92894.cc: New test.
+ * testsuite/24_iterators/indirect_callable/92894.cc: New test.
+
+2020-05-01 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/94901
+ * include/std/type_traits (__is_complete_or_unbounded): Replace
+ BADNAME _T with _Tp.
+ * testsuite/17_intro/badnames.cc: New test.
+
+2020-04-30 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/89510
+ * include/bits/alloc_traits.h (allocator_traits::_S_construct)
+ (allocator_traits::_S_destroy)
+ (allocator_traits<allocator<T>>::construct): Use traits in
+ noexcept-specifiers.
+ * include/bits/allocator.h (allocator<void>::construct)
+ (allocator<void>::destroy): Likewise.
+ * include/ext/malloc_allocator.h (malloc_allocator::construct)
+ (malloc_allocator::destroy): Likewise.
+ * include/ext/new_allocator.h (new_allocator::construct)
+ (new_allocator::destroy): Likewise.
+ * testsuite/20_util/allocator/89510.cc: New test.
+ * testsuite/ext/malloc_allocator/89510.cc: New test.
+ * testsuite/ext/new_allocator/89510.cc: New test.
+
+2020-04-29 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/94854
+ * include/bits/basic_string.tcc: Update comment about explicit
+ instantiations.
+
+2020-04-28 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/91480
+ * include/bits/allocator.h (__cpp_lib_allocator_is_always_equal):
+ Remove non-standard macro.
+ * include/bits/stl_iterator.h (__cpp_lib_constexpr_iterator): Define
+ to indicate P1032R1 support.
+ * include/bits/stl_pair.h (__cpp_lib_constexpr_utility): Likewise.
+ * include/std/string_view (__cpp_lib_constexpr_string_view): Likewise.
+ * include/std/tuple (__cpp_lib_constexpr_tuple): Likewise.
+ * include/std/version (__cpp_lib_allocator_is_always_equal): Remove.
+ (__cpp_lib_constexpr_iterator, __cpp_lib_constexpr_string_view)
+ (__cpp_lib_constexpr_tuple, __cpp_lib_constexpr_utility): Define.
+ * testsuite/20_util/function_objects/constexpr_searcher.cc: Check
+ feature test macro.
+ * testsuite/20_util/tuple/cons/constexpr_allocator_arg_t.cc: Likewise.
+ * testsuite/21_strings/basic_string_view/operations/copy/char/
+ constexpr.cc: Likewise.
+ * testsuite/24_iterators/insert_iterator/constexpr.cc: Likewise.
+
+ PR libstdc++/94831
+ * include/bits/alloc_traits.h (_S_construct): Restore placement
+ new-expression for C++11/14/17 and call std::construct_at directly
+ for C++20.
+ * include/bits/stl_construct.h (_Construct): Revert to non-constexpr
+ function returning void.
+ * testsuite/20_util/specialized_algorithms/
+ uninitialized_value_construct/94831.cc: New test.
+ * testsuite/23_containers/vector/cons/94831.cc: New test.
+
+2020-04-28 Patrick Palka <ppalka@redhat.com>
+
+ LWG 3433 subrange::advance(n) has UB when n < 0
+ * include/std/ranges (subrange::prev): Fix typo.
+ (subrange::advance): Handle a negative argument as per the proposed
+ resolution of LWG 3433.
+ * testsuite/std/ranges/subrange/lwg3433.cc: New test.
+
+2020-04-28 Jonathan Wakely <jwakely@redhat.com>
+ Iain Sandoe <iain@sandoe.co.uk>
+
+ PR c++/94759
+ * include/std/coroutine: Implement handing for non-
+ class coroutine return types.
+
+2020-04-24 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/experimental/executor (service_already_exists): Make default
+ constructor public (LWG 3414).
+ * testsuite/experimental/net/execution_context/make_service.cc: Check
+ the service_already_exists can be default constructed.
+
+2020-04-24 Kamlesh Kumar <kamleshbhalui@gmail.com>
+ Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/90415
+ PR libstdc++/92156
+ * include/std/any (any): Rename template parameters for consistency
+ with the standard.
+ (any::_Decay): Rename to _Decay_if_not_any.
+ (any::any(T&&):: Remove is_constructible from constraints. Remove
+ non-standard overload.
+ (any::any(in_place_type_t<T>, Args&&...))
+ (any::any(in_place_type_t<T>, initializer_list<U>, Args&&...))
+ (any::emplace(Args&&...))
+ (any::emplace(initializer_list<U>, Args&&...)):
+ Use decay_t instead of _Decay.
+ * testsuite/20_util/any/cons/90415.cc: New test.
+ * testsuite/20_util/any/cons/92156.cc: New Test.
+ * testsuite/20_util/any/misc/any_cast_neg.cc: Make dg-error directives
+ more robust.
+ * testsuite/20_util/any/modifiers/92156.cc: New test.
+
+2020-04-23 Jonathan Wakely <jwakely@redhat.com>
+
+ * doc/xml/manual/status_cxx2020.xml: Update C++20 status table.
+ * doc/html/*: Regenerate.
+
+ * include/bits/stl_iterator.h (__cpp_lib_array_constexpr): Revert
+ value for C++17 to 201803L because P0858R0 is supported for C++17.
+ * include/std/version (__cpp_lib_array_constexpr): Likewise.
+ * testsuite/23_containers/array/element_access/constexpr_c++17.cc:
+ Check for value corresponding to P0031R0 features being tested.
+ * testsuite/23_containers/array/requirements/constexpr_iter.cc:
+ Check for value corresponding to P0858R0 features being tested.
+
+ * include/std/version (__cpp_lib_three_way_comparison): Define for
+ freestanding builds.
+
+2020-04-23 Thomas Rodgers <rodgert@appliantology.com>
+
+ * include/experimental/net/executor (system_context): Mark
+ system_context::system_context() = delete.
+ * testsuite/experimental/net/executor/1.cc: Add new
+ test to check system_context is not default constructible.
+
+2020-04-23 Iain Sandoe <iain@sandoe.co.uk>
+
+ * include/std/coroutine: Update the inline namespace to __n4861.
+ Add the __cpp_lib_coroutine define, set to 201902L.
+ * include/std/version: Add __cpp_lib_coroutine, set to 201902L.
+
+2020-04-22 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/std/execution (__cpp_lib_execution): Define to indicate
+ support for P0024R2 and P1001R2.
+ * include/std/version (__cpp_lib_execution): Define.
+ * testsuite/25_algorithms/pstl/feature_test.cc: Only test macro
+ defined by <algorithm>, move other tests to new tests ...
+ * testsuite/25_algorithms/pstl/feature_test-2.cc: New test.
+ * testsuite/25_algorithms/pstl/feature_test-3.cc: New test.
+ * testsuite/25_algorithms/pstl/feature_test-4.cc: New test.
+ * testsuite/25_algorithms/pstl/feature_test-5.cc: New test.
+
+ * include/bits/stl_iterator.h (__cpp_lib_array_constexpr): Define
+ different values for C++17 and C++20, to indicate different feature
+ sets. Update value for C++20 to indicate P1032R1 support.
+ * include/std/version (__cpp_lib_array_constexpr): Likewise.
+ * testsuite/23_containers/array/comparison_operators/constexpr.cc:
+ Check feature test macro.
+ * testsuite/23_containers/array/element_access/constexpr_c++17.cc:
+ New test.
+ * testsuite/23_containers/array/requirements/constexpr_fill.cc: Check
+ feature test macro.
+ * testsuite/23_containers/array/requirements/constexpr_iter.cc: Test
+ in C++17 mode and check feature test macro.
+
+ * include/std/utility (__cpp_lib_constexpr_algorithms): Do not define
+ here.
+ * testsuite/20_util/exchange/constexpr.cc: Do not expect macro to be
+ defined by <utility>.
+
+ * include/std/functional (__cpp_lib_concepts): Update macro value to
+ indicate P1964R2 support.
+ * include/std/version (__cpp_lib_concepts): Likewise.
+ * testsuite/std/concepts/1.cc: Adjust expected value.
+ * testsuite/std/concepts/2.cc: Likewise.
+
+ * include/std/functional (__cpp_lib_constexpr_invoke): Rename to
+ __cpp_lib_constexpr_functional.
+ * include/std/version (__cpp_lib_constexpr_invoke): Likewise.
+ * testsuite/20_util/function_objects/invoke/constexpr.cc: Adjust.
+
+ * include/bits/ptr_traits.h (__cpp_lib_constexpr_memory): Define to
+ indicate P1006R1 support.
+ (__cpp_lib_to_address): Define to indicate P0653R2 support.
+ * include/bits/range_access.h (__cpp_lib_ssize): Define to indicate
+ P1227R2 support.
+ * include/bits/ranges_algo.h (__cpp_lib_shift): Define to indicate
+ P0769R2 support.
+ * include/std/atomic (__cpp_lib_atomic_float): Define to indicate
+ P0020R6 support.
+ * include/std/memory (__cpp_lib_assume_aligned): Define to indicate
+ P1007R3 support.
+ * include/std/memory_resource (__cpp_lib_polymorphic_allocator):
+ Define to indicate P0339R6 support.
+ * include/std/string_view (__cpp_lib_starts_ends_with): Define to
+ indicate P0457R2 support.
+ * include/std/type_traits (__cpp_lib_is_nothrow_convertible): Define
+ to indicate P0758R1 support.
+ (__cpp_lib_remove_cvref): Define to indicate P0550R2 support.
+ (__cpp_lib_type_identity): Define to indicate P0887R1 support.
+ * include/std/version (__cpp_lib_atomic_float)
+ (__cpp_lib_is_nothrow_convertible, __cpp_lib_remove_cvref)
+ (__cpp_lib_type_identity, __cpp_lib_assume_aligned)
+ (__cpp_lib_constexpr_memory, __cpp_lib_polymorphic_allocator)
+ (__cpp_lib_shift, __cpp_lib_ssize, __cpp_lib_starts_ends_with)
+ (__cpp_lib_to_address): Define.
+ * testsuite/20_util/to_address/1_neg.cc: Adjust dg-error line number.
+
+ * include/bits/stl_map.h (__cpp_lib_map_insertion): Remove old
+ macro.
+ * include/bits/unordered_map.h (__cpp_lib_unordered_map_insertion):
+ Likewise.
+ * include/std/version (__cpp_lib_map_insertion)
+ (__cpp_lib_unordered_map_insertion): Remove.
+
+ * include/std/condition_variable (__cpp_lib_jthread): Remove
+ redundant definition.
+ * include/std/stop_token (__cpp_lib_jthread): Update macro value to
+ indicate P1869R1 support.
+ * include/std/version (__cpp_lib_jthread): Update value.
+ * testsuite/30_threads/condition_variable_any/stop_token/1.cc: Check
+ for updated macro value.
+ * testsuite/30_threads/condition_variable_any/stop_token/2.cc:
+ Likewise.
+ * testsuite/30_threads/jthread/1.cc: Likewise.
+ * testsuite/30_threads/jthread/2.cc: Likewise.
+ * testsuite/30_threads/stop_token/1.cc: Likewise.
+ * testsuite/30_threads/stop_token/2.cc: Likewise.
+
+ * testsuite/21_strings/basic_string/erasure.cc: Check for
+ __cpp_lib_erase_if macro.
+ * testsuite/23_containers/deque/erasure.cc: Add header name to #error
+ messages.
+ * testsuite/23_containers/forward_list/erasure.cc: Likewise.
+ * testsuite/23_containers/list/erasure.cc: Likewise.
+ * testsuite/23_containers/map/erasure.cc: Likewise.
+ * testsuite/23_containers/set/erasure.cc: Likewise.
+ * testsuite/23_containers/unordered_map/erasure.cc: Likewise.
+ * testsuite/23_containers/unordered_set/erasure.cc: Likewise.
+ * testsuite/23_containers/vector/erasure.cc: Likewise.
+
+2020-04-21 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/bits/stl_iterator.h (__normal_iterator): Use synth-three-way
+ to define operator<=>.
+ * testsuite/24_iterators/normal_iterator/cmp_c++20.cc: New test.
+
+ * doc/Makefile.am (xml_sources_manual): Add missing XML files.
+ * doc/Makefile.in: Regenerate.
+ * doc/xml/manual/status_cxx1998.xml: Refer to "this section" instead
+ of "this page".
+ * doc/xml/manual/status_cxx2011.xml: Formatting and other corrections
+ to the C++11 status table.
+ * doc/xml/manual/status_cxx2014.xml: Replace list of C++14 feature
+ proposals with table matching contents of the C++14 standard.
+ * doc/xml/manual/status_cxx2017.xml: Add table matching contents of
+ the C++17 standard.
+ * doc/html/*: Regenerate.
+
+ PR c++/94149
+ * include/std/type_traits (__is_nt_constructible_impl): Add partial
+ specializations for bounded arrays with non-empty initializers.
+ * testsuite/20_util/is_nothrow_constructible/value_c++20.cc: New test.
+
+2020-04-20 Thomas Rodgers <trodgers@redhat.com>
+
+ * testsuite/lib/libstdc++.exp: Add additional_flags=
+ -DTBB_SUPRESS_DEPRECATED_MESSAGES=1 to suppress warnings when
+ compiling with a newer Thread Building Blocks.
+
+2020-04-20 Jonathan Wakely <jwakely@redhat.com>
+
+ * testsuite/24_iterators/istreambuf_iterator/sentinel.cc: New test.
+
+ * testsuite/20_util/is_constructible/51185.cc: Make test class a
+ non-aggregate so that the test verifies the same thing in all -std
+ modes.
+ * testsuite/20_util/is_constructible/value-2.cc: Adjust expected
+ results for some types when paren-init for aggregates is supported.
+
+ * include/std/version (__cpp_lib_three_way_comparison): Update value.
+ * libsupc++/compare (__cpp_lib_three_way_comparison): Likewise.
+ (__detail::__synth3way): Add noexcept-specifier.
+
+ * include/bits/stl_map.h (map): Define operator<=> and remove
+ operator< for C++20.
+ * include/bits/stl_multimap.h (multimap): Likewise.
+ * include/bits/stl_multiset.h (multiset): Likewise.
+ * include/bits/stl_set.h (set): Likewise.
+ * include/bits/stl_tree.h (_Rb_tree): Likewise.
+ (_Rb_tree_iterator, _Rb_tree_const_iterator): Remove redundant
+ operator!= for C++20.
+ * include/debug/map.h (__gnu_debug::map): Define operator<=> for C++20.
+ * include/debug/multimap.h (__gnu_debug::multimap): Likewise.
+ * include/debug/multiset.h (__gnu_debug::multiset): Likewise.
+ * include/debug/set.h (__gnu_debug::set): Likewise.
+ * testsuite/23_containers/map/operators/cmp_c++20.cc: New test.
+ * testsuite/23_containers/multimap/operators/cmp_c++20.cc: New test.
+ * testsuite/23_containers/multiset/operators/cmp_c++20.cc: New test.
+ * testsuite/23_containers/set/operators/cmp_c++20.cc: New test.
+
+2020-04-20 Matthias Kretz <kretz@kde.org>
+
+ * testsuite/lib/libstdc++.exp: Avoid illegal argument to verbose.
+
2020-04-19 Jonathan Wakely <jwakely@redhat.com>
+ * include/bits/stl_queue.h (queue): Define operator<=> for C++20.
+ * include/bits/stl_stack.h (stack): Likewise.
+ * testsuite/23_containers/queue/cmp_c++20.cc: New test.
+ * testsuite/23_containers/stack/cmp_c++20.cc: New test.
+
* include/bits/unordered_map.h (unordered_map, unordered_multimap):
Remove redundant operator!= for C++20.
* include/bits/unordered_set.h (unordered_set, unordered_multiset):
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