+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,
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