+2019-11-26 François Dumont <fdumont@gcc.gnu.org>
+
+ * include/debug/helper_functions.h (__valid_range_aux): Use C++98
+ std::input_iterator_tag default constructor invocation.
+
+ * include/debug/array (array<>::fill): Add C++20 constexpr.
+ (array<>::swap): Likewise.
+
+ * include/debug/safe_iterator.h
+ [__cpp_lib_concepts](_Safe_iterator<>::iterator_concept): Define for
+ C++20.
+
+2019-11-25 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/bits/iterator_concepts.h (ranges::iter_swap): Fix parameter
+ types of poison pill overload. Use remove_reference_t when checking
+ constraints.
+ * include/bits/stl_iterator.h (move_sentinel): Define for C++20.
+ (move_iterator): Adjust definitions of nested types for C++20. Add
+ hidden friends for move_sentinel operations, iter_move and iter_swap.
+ (common_iterator, counted_iterator): Define for C++20.
+ * testsuite/24_iterators/move_iterator/cust.cc: New test.
+ * testsuite/24_iterators/move_iterator/sentinel.cc: New test.
+ * testsuite/24_iterators/common_iterator/1.cc: New test.
+ * testsuite/24_iterators/counted_iterator/1.cc: New test.
+
+ PR libstdc++/91786
+ * include/bits/fs_path.h (filesystem_error): Move definition before
+ the use in u8path.
+
+2019-11-24 François Dumont <fdumont@gcc.gnu.org>
+
+ * include/debug/functions.h: Remove <bits/move.h> include.
+ (__check_singular_aux, __check_singular): Move...
+ * include/debug/helper_functions.h:
+ (__check_singular_aux, __check_singular): ...here.
+ (__valid_range_aux): Adapt to use latter.
+ * testsuite/25_algorithms/copy/debug/2_neg.cc: New.
+
+2019-11-20 Janne Blomqvist <jb@gcc.gnu.org>
+
+ * doc/html/api.html: Use https for gcc.gnu.org.
+ * doc/xml/api.xml: Likewise.
+
+2019-11-19 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/bits/regex.h (ranges::__detail::__enable_view_impl): Fix
+ declaration.
+ * include/bits/stl_multiset.h (ranges::__detail::__enable_view_impl):
+ Likewise.
+ * include/bits/stl_set.h (ranges::__detail::__enable_view_impl):
+ Likewise.
+ * include/bits/unordered_set.h (ranges::__detail::__enable_view_impl):
+ Likewise.
+ * include/debug/multiset.h (ranges::__detail::__enable_view_impl):
+ Likewise.
+ * include/debug/set.h (ranges::__detail::__enable_view_impl): Likewise.
+ * include/debug/unordered_set (ranges::__detail::__enable_view_impl):
+ Likewise.
+
+2019-11-18 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/std/thread: Reduce header dependencies.
+ (jthread::get_id()): Add missing return.
+ (jthread::get_stop_token()): Avoid unnecessary stop_source temporary.
+ (jthread::_S_create): Check is_invocable using decayed types. Add
+ static assertion.
+ * testsuite/30_threads/jthread/1.cc: Add dg-require-gthreads.
+ * testsuite/30_threads/jthread/2.cc: Likewise.
+ * testsuite/30_threads/jthread/3.cc: New test.
+ * testsuite/30_threads/jthread/jthread.cc: Add missing directives for
+ pthread and gthread support. Use VERIFY instead of assert.
+
+ * include/bits/alloc_traits.h (allocator_traits::construct)
+ (allocator_traits::destroy, allocator_traits::max_size): Add unused
+ attributes to parameters that are not used in C++20.
+ * include/std/bit (__ceil2): Add braces around assertion to avoid
+ -Wmissing-braces warning.
+
+2019-11-16 Edward Smith-Rowland <3dw4rd@verizon.net>
+
+ Repair the <tuple> part of C++20 p1032 Misc constexpr bits.
+ * include/bits/uses_allocator.h (__uses_alloc0::_Sink::operaror=)
+ (__use_alloc(const _Alloc&)) : Constexpr.
+
+2019-11-17 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/std/string_view (basic_string_view(It, End)): Add range
+ constructor and deduction guide from P1391R4.
+ * testsuite/21_strings/basic_string_view/cons/char/range.cc: New test.
+
+ * include/bits/regex.h (match_results): Specialize __enable_view_impl.
+ * include/bits/stl_set.h (set): Likewise.
+ * include/bits/unordered_set.h (unordered_set, unordered_multiset):
+ Likewise.
+ * include/debug/multiset.h (__debug::multiset): Likewise.
+ * include/debug/set.h (__debug::set): Likewise.
+ * include/debug/unordered_set (__debug::unordered_set)
+ (__debug::unordered_multiset): Likewise.
+ * include/std/ranges (ranges::view, ranges::enable_view)
+ (ranges::view_interface, ranges::subrange, ranges::empty_view)
+ (ranges::single_view, ranges::views::single, ranges::iota_view)
+ (ranges::views::iota): Define for C++20.
+ * testsuite/std/ranges/empty_view.cc: New test.
+ * testsuite/std/ranges/iota_view.cc: New test.
+ * testsuite/std/ranges/single_view.cc: New test.
+ * testsuite/std/ranges/view.cc: New test.
+
+2019-11-16 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/std/ranges: Revert accidentally committed changes.
+
+ * include/std/thread (jthread::jthread()): Use nostopstate constant.
+ (jthread::jthread(Callable&&, Args&&...)): Use helper function to
+ create std::thread instead of indirection through a lambda. Use
+ remove_cvref_t instead of decay_t.
+ (jthread::joinable(), jthread::get_id(), jthread::native_handle())
+ (jthread::hardware_concurrency()): Add nodiscard attribute.
+ (swap(jthread&. jthread&)): Define hidden friend.
+ (jthread::_S_create): New helper function for constructor.
+
+2019-11-15 Edward Smith-Rowland <3dw4rd@verizon.net>
+
+ Implement the <tuple> part of C++20 p1032 Misc constexpr bits.
+ * include/std/tuple (_Head_base, _Tuple_impl(allocator_arg_t,...)
+ (_M_assign, tuple(allocator_arg_t,...), _Inherited, operator=, _M_swap)
+ (swap, pair(piecewise_construct_t,): Constexpr.
+ * (__uses_alloc0::_Sink::operator=, __uses_alloc_t): Constexpr.
+ * testsuite/20_util/tuple/cons/constexpr_allocator_arg_t.cc: New test.
+ * testsuite/20_util/tuple/constexpr_swap.cc : New test.
+ * testsuite/20_util/uses_allocator/69293_neg.cc: Extra error for C++20.
+ * testsuite/20_util/uses_allocator/cons_neg.cc: : Extra error for C++20.
+
+2019-11-15 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/std/stop_token: Reduce header dependencies by including
+ internal headers.
+ (stop_token::swap(stop_token&), swap(stop_token&, stop_token&)):
+ Define.
+ (operator!=(const stop_token&, const stop_token&)): Fix return value.
+ (stop_token::_Stop_cb::_Stop_cb(Cb&&)): Use std::forward instead of
+ (stop_token::_Stop_state_t) [_GLIBCXX_HAS_GTHREADS]: Use lock_guard
+ instead of unique_lock.
+ [!_GLIBCXX_HAS_GTHREADS]: Do not use mutex.
+ (stop_token::stop_token(_Stop_state)): Change parameter to lvalue
+ reference.
+ (stop_source): Remove unnecessary using-declarations for names only
+ used once.
+ (swap(stop_source&, stop_source&)): Define.
+ (stop_callback(const stop_token&, _Cb&&))
+ (stop_callback(stop_token&&, _Cb&&)): Replace lambdas with a named
+ function. Use std::forward instead of std::move. Run callbacks if a
+ stop request has already been made.
+ (stop_source::_M_execute()): Remove.
+ (stop_source::_S_execute(_Stop_cb*)): Define.
+ * include/std/version (__cpp_lib_jthread): Define conditionally.
+ * testsuite/30_threads/stop_token/stop_callback.cc: New test.
+ * testsuite/30_threads/stop_token/stop_source.cc: New test.
+ * testsuite/30_threads/stop_token/stop_token.cc: Enable test for
+ immediate execution of callback.
+
+2019-11-15 Edward Smith-Rowland <3dw4rd@verizon.net>
+
+ Implement the default_searcher part of C++20 p1032 Misc constexpr bits.
+ * include/std/functional
+ (default_searcher, default_searcher::operator()): Constexpr.
+ * testsuite/20_util/function_objects/constexpr_searcher.cc: New.
+
+2019-11-15 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/bits/iterator_concepts.h (weakly_incrementable): Adjust.
+ * include/std/concepts (default_constructible): Rename to
+ default_initializable and require default-list-initialization and
+ default-initialization to be valid (LWG 3149).
+ (semiregular): Adjust to new name.
+ * testsuite/std/concepts/concepts.lang/concept.defaultconstructible/
+ 1.cc: Rename directory to concept.defaultinitializable and adjust to
+ new name.
+ * testsuite/std/concepts/concepts.lang/concept.defaultinitializable/
+ lwg3149.cc: New test.
+ * testsuite/util/testsuite_iterators.h (test_range): Adjust.
+
+ * src/c++17/fs_path.cc [_GLIBCXX_FILESYSTEM_IS_WINDOWS]
+ (is_disk_designator): New helper function.
+ (path::_Parser::root_path()): Use is_disk_designator.
+ (path::lexically_relative(const path&)): Implement resolution of
+ LWG 3070.
+ * testsuite/27_io/filesystem/path/generation/relative.cc: Check with
+ path components that look like a root-name.
+
+ * doc/doxygen/user.cfg.in: Add <stop_token>.
+ * include/precompiled/stdc++.h: Likewise.
+ * include/std/stop_token: Fix definition of std::nostopstate.
+ * testsuite/30_threads/headers/stop_token/synopsis.cc: New test.
+ * testsuite/30_threads/headers/thread/types_std_c++20.cc: New test.
+ * testsuite/30_threads/stop_token/stop_source.cc: New test.
+ * testsuite/30_threads/stop_token/stop_token.cc: Remove unnecessary
+ dg-require directives. Remove I/O and inclusion of <iostream>.
+
+2019-11-14 Thomas Rodgers <trodgers@redhat.com>
+
+ * include/Makefile.am: Add <stop_token> header.
+ * include/Makefile.in: Regenerate.
+ * include/std/condition_variable: Add overloads for stop_token support
+ to condition_variable_any.
+ * include/std/stop_token: New file.
+ * include/std/thread: Add jthread type.
+ * include/std/version (__cpp_lib_jthread): New value.
+ * testsuite/30_threads/condition_variable_any/stop_token/1.cc: New test.
+ * testsuite/30_threads/condition_variable_any/stop_token/2.cc: New test.
+ * testsuite/30_threads/condition_variable_any/stop_token/wait_on.cc:
+ New test.
+ * testsuite/30_threads/jthread/1.cc: New test.
+ * testsuite/30_threads/jthread/2.cc: New test.
+ * testsuite/30_threads/jthread/jthread.cc: New test.
+ * testsuite/30_threads/stop_token/1.cc: New test.
+ * testsuite/30_threads/stop_token/2.cc: New test.
+ * testsuite/30_threads/stop_token/stop_token.cc: New test.
+
+2019-11-14 Edward Smith-Rowland <3dw4rd@verizon.net>
+
+ Implement the <array> part of C++20 p1032 Misc constexpr bits.
+ * include/std/array (fill, swap): Make constexpr.
+ * testsuite/23_containers/array/requirements/constexpr_fill.cc: New.
+ * testsuite/23_containers/array/requirements/constexpr_swap.cc: New.
+
+2019-11-14 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/bits/iterator_concepts.h (__iter_concept_impl): Add
+ comments.
+ (indirect_relation): Rename to indirect_binary_predicate and adjust
+ definition as per P1716R3.
+ (indirect_equivalence_relation): Define.
+ (indirectly_comparable): Adjust definition.
+ * include/std/concepts (equivalence_relation): Define.
+ * testsuite/std/concepts/concepts.callable/relation.cc: Add tests for
+ equivalence_relation.
+
+ * include/bits/iterator_concepts.h (disable_sized_sentinel): Rename to
+ disable_sized_sentinel_for.
+ * testsuite/24_iterators/headers/iterator/synopsis_c++20.cc: Adjust.
+
+2019-11-13 Jonathan Wakely <jwakely@redhat.com>
+
+ * libsupc++/compare (strong_order, weak_order, partial_order)
+ (compare_strong_order_fallback, compare_weak_order_fallback)
+ (compare_partial_order_fallback): Define customization point objects
+ for C++20.
+ * testsuite/18_support/comparisons/algorithms/partial_order.cc: New
+ test.
+ * testsuite/18_support/comparisons/algorithms/strong_order.cc: New
+ test.
+ * testsuite/18_support/comparisons/algorithms/weak_order.cc: New test.
+
+2019-11-11 Gerald Pfeifer <gerald@pfeifer.com>
+
+ * doc/xml/gnu/gpl-3.0.xml: Adjust link to "Why not LGPL".
+
+2019-11-10 Gerald Pfeifer <gerald@pfeifer.com>
+
+ * doc/xml/manual/using.xml: Switch www.hboehm.info to https.
+
+2019-11-07 Jonathan Wakely <jwakely@redhat.com>
+
+ * doc/doxygen/user.cfg.in (INPUT): Add <compare> header.
+ * include/precompiled/stdc++.h: Include <compare> header.
+
+ * libsupc++/compare (common_comparison_category)
+ (common_comparison_category_t): Define for C++20.
+ * testsuite/18_support/comparisons/common/1.cc: New test.
+
+ * include/bits/stl_algo.h (for_each_n): Handle negative count.
+ * testsuite/25_algorithms/for_each/for_each_n_debug.cc: New test.
+
+2019-11-07 Jason Merrill <jason@redhat.com>
+
+ * libsupc++/compare: Remove strong_equality and weak_equality.
+
+2019-11-06 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/Makefile.in: Regenerate.
+ * libsupc++/Makefile.in: Regenerate.
+ * libsupc++/compare (__3way_builtin_ptr_cmp): Define helper.
+ (compare_three_way): Add missing implementation.
+
+ * include/bits/iterator_concepts.h (unreachable_sentinel_t): Remove
+ redundant equality operators.
+ * testsuite/util/testsuite_iterators.h (test_range::sentinel):
+ Likewise.
+
+2019-11-05 Jonathan Wakely <jwakely@redhat.com>
+
+ * libsupc++/compare: New header.
+ * libsupc++/Makefile.am (std_HEADERS): Add compare.
+ * include/std/version: Define __cpp_lib_three_way_comparison.
+ * include/std/functional: #include <compare>.
+
+ * include/std/version [!_GLIBCXX_HOSTED]: Do not define feature test
+ macros for features that are only present in hosted builds.
+
+ * include/bits/iterator_concepts.h (__iter_without_nested_types):
+ Remove incorrect comment.
+
+2019-10-31 Jonathan Wakely <jwakely@redhat.com>
+
+ * doc/html/*: Regenerate.
+
+ * include/bits/refwrap.h (reference_wrapper, ref, cref): Add constexpr
+ specifiers for C++20.
+ * include/std/functional (_Mem_fn, mem_fn, _Bind, _Bind_result, bind)
+ (bind_front, _Not_fn, not_fn): Likewise.
+ * testsuite/20_util/bind/constexpr.cc: New test.
+ * testsuite/20_util/function_objects/bind_front/constexpr.cc: New test.
+ * testsuite/20_util/function_objects/mem_fn/constexpr.cc: New test.
+ * testsuite/20_util/function_objects/not_fn/constexpr.cc: New test.
+ * testsuite/20_util/reference_wrapper/constexpr.cc: New test.
+
+ * doc/doxygen/user.cfg.in: Add new header.
+ * include/Makefile.am: Add new header.
+ * include/Makefile.in: Regenerate.
+ * include/precompiled/stdc++.h: Include new header.
+ * include/std/ranges: New header.
+ (ranges::sentinel_t, ranges::range_value_t, ranges::range_reference_t)
+ (ranges::range_rvalue_reference_t, ranges::sized_range)
+ (ranges::output_range, ranges::input_ranges, ranges::forward_range)
+ (ranges::bidirectional_range, ranges::random_access_range)
+ (ranges::contiguous_range, ranges::common::range): Define.
+ * testsuite/24_iterators/headers/iterator/synopsis_c++20.cc: Check
+ that disabled_sized_sentinel can be specialized.
+ * testsuite/std/ranges/access/begin.cc: Include <ranges> instead of
+ <iterator>.
+ * testsuite/std/ranges/access/cbegin.cc: Likewise.
+ * testsuite/std/ranges/access/cdata.cc: Likewise.
+ * testsuite/std/ranges/access/cend.cc: Likewise.
+ * testsuite/std/ranges/access/crbegin.cc: Likewise.
+ * testsuite/std/ranges/access/crend.cc: Likewise.
+ * testsuite/std/ranges/access/data.cc: Likewise.
+ * testsuite/std/ranges/access/empty.cc: Likewise.
+ * testsuite/std/ranges/access/end.cc: Likewise.
+ * testsuite/std/ranges/access/end_neg.cc: Likewise.
+ * testsuite/std/ranges/access/rbegin.cc: Likewise.
+ * testsuite/std/ranges/access/rend.cc: Likewise.
+ * testsuite/std/ranges/access/size.cc: Likewise.
+ * testsuite/std/ranges/access/size_neg.cc: Likewise.
+ * testsuite/std/ranges/headers/ranges/synopsis.cc: New test.
+ * testsuite/std/ranges/range.cc: New test.
+ * testsuite/std/ranges/refinements.cc: New test.
+ * testsuite/std/ranges/sized.cc: New test.
+ * testsuite/util/testsuite_iterators.h: Add aliases for range types.
+ (output_iterator_wrapper::WritableObject::operator=): Add const
+ qualifier so that output_iterator_wrapper satisfies writable.
+
+ * testsuite/20_util/add_pointer/value.cc: Check void types.
+
+ * include/bits/range_access.h (__sizable): Rename to __sentinel_size.
+ Remove workaround for PR c++/92268 and remove redundant requirements
+ that are already checked by sized_sentinel_for.
+ * testsuite/std/ranges/access/cend.cc: Fix failures.
+ * testsuite/std/ranges/access/end.cc: Likewise.
+
+ * include/bits/range_access.h (ranges::begin): Combine array and
+ non-array overloads into one function template. Only use ADL for
+ classes and enums.
+ (ranges::end, ranges::size): Likewise. Make unbounded arrays
+ ill-formed.
+ (ranges::rbegin, ranges::rend): Only use ADL for classes and enums.
+ Reformat _S_noexcept() functions to mirror operator() structure.
+ * testsuite/std/ranges/access/begin.cc: Check incomplete array.
+ * testsuite/std/ranges/access/end_neg.cc: New test.
+ * testsuite/std/ranges/access/size.cc: Check array of incomplete type.
+ * testsuite/std/ranges/access/size_neg.cc: New test.
+
+ * testsuite/24_iterators/range_access*.cc: Move to ...
+ * testsuite/24_iterators/range_access/range_access*.cc: ... here.
+ * testsuite/24_iterators/range_access/range_access_cpp20_neg.cc: New
+ test.
+
+2019-10-30 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/std/concepts (std::ranges::swap): Use a single overload for
+ the non-array cases, and switch using if-constexpr.
+
+ * include/bits/stl_iterator.h (__normal_iterator::iterator_concept):
+ Guard with __cpp_lib_concepts macro.
+
+ * include/std/bit (__cpp_lib_bitops): Define.
+ * include/std/version (__cpp_lib_constexpr): Remove.
+ (__cpp_lib_bitops, __cpp_lib_constexpr_dynamic_alloc): Define.
+ * testsuite/26_numerics/bit/header.cc: New test.
+ * testsuite/26_numerics/bit/header-2.cc: New test.
+ * testsuite/20_util/allocator_traits/header.cc: New test.
+ * testsuite/20_util/allocator_traits/header-2.cc: New test.
+
+ * include/bits/stl_iterator.h (namespace __gnu_cxx): Remove
+ using-declarations for std::iterator and std::iterator_traits.
+ (__gnu_cxx::__normal_iterator): Qualify iterator_traits.
+ * include/ext/algorithm (namespace __gnu_cxx): Remove
+ using-declarations for std names and qualify those names when used.
+ Also refer to std::min in parentheses to protect against function-like
+ macros.
+ * include/ext/rc_string_base.h: Qualify iterator_traits.
+ * include/ext/sso_string_base.h: Qualify iterator_traits.
+
+ PR libstdc++/92272
+ * include/bits/stl_bvector.h (_Bit_iterator::pointer)
+ (_Bit_const_iterator::pointer): Define as void for C++20.
+ * include/bits/stl_iterator.h (reverse_iterator::operator->()): Add
+ constraints for C++20.
+ (__normal_iterator::iterator_concept): Define for C++20.
+ * include/bits/streambuf_iterator.h (istreambuf_iterator::pointer):
+ Define as void for C++20.
+ (ostreambuf_iterator::difference_type): Define as ptrdiff_t for C++20.
+ (ostreambuf_iterator::ostreambuf_iterator()): Add default constructor
+ for C++20.
+ * testsuite/23_containers/vector/bool/iterator_c++20.cc: New test.
+ * testsuite/24_iterators/bidirectional/concept.cc: New test.
+ * testsuite/24_iterators/bidirectional/tag.cc: New test.
+ * testsuite/24_iterators/contiguous/concept.cc: New test.
+ * testsuite/24_iterators/contiguous/tag.cc: New test.
+ * testsuite/24_iterators/forward/concept.cc: New test.
+ * testsuite/24_iterators/forward/tag.cc: New test.
+ * testsuite/24_iterators/input/concept.cc: New test.
+ * testsuite/24_iterators/input/tag.cc: New test.
+ * testsuite/24_iterators/istreambuf_iterator/requirements/typedefs.cc:
+ New test.
+ * testsuite/24_iterators/ostreambuf_iterator/requirements/typedefs.cc:
+ New test.
+ * testsuite/24_iterators/output/concept.cc: New test.
+ * testsuite/24_iterators/output/tag.cc: New test.
+ * testsuite/24_iterators/random_access/concept.cc: New test.
+ * testsuite/24_iterators/random_access/tag.cc: New test.
+ * testsuite/24_iterators/range_operations/advance_debug_neg.cc: New
+ test.
+ * testsuite/24_iterators/random_access_iterator/26020.cc: Move to ...
+ * testsuite/24_iterators/operations/26020.cc: ... here.
+ * testsuite/24_iterators/random_access_iterator/
+ string_vector_iterators.cc: Move to ...
+ * testsuite/24_iterators/random_access/string_vector_iterators.cc: ...
+ here.
+
+ * testsuite/util/testsuite_iterators.h: Fix typo in __cplusplus check.
+
2019-10-29 Jonathan Wakely <jwakely@redhat.com>
+ * include/bits/range_access.h (ranges::disable_sized_range)
+ (ranges::begin, ranges::end, ranges::cbegin, ranges::cend)
+ (ranges::rbegin, ranges::rend, ranges::crbegin, ranges::crend)
+ (ranges::size, ranges::empty, ranges::data, ranges::cdata)
+ (ranges::range, ranges::sized_range, ranges::advance, ranges::distance)
+ (ranges::next, ranges::prev): Guard with __cpp_lib_concepts.
+ * include/bits/stl_iterator.h (disable_sized_sentinel): Likewise.
+
+ * include/bits/alloc_traits.h (__cpp_lib_constexpr_dynamic_alloc):
+ Define.
+ (allocator_traits::_S_construct, allocator_traits::_S_destroy)
+ (__alloc_on_copy, __alloc_on_move, __alloc_on_swap): Use
+ _GLIBCXX14_CONSTEXPR instead of constexpr.
+ * include/bits/stl_construct.h (_Destroy): Likewise.
+
+ * include/Makefile.am: Add new header.
+ * include/Makefile.in: Regenerate.
+ * include/bits/iterator_concepts.h: New header.
+ (contiguous_iterator_tag, iter_reference_t, ranges::iter_move)
+ (iter_rvalue_reference_t, incrementable_traits, iter_difference_t)
+ (readable_traits, iter_value_t, readable, iter_common_reference_t)
+ (writable, waekly_incrementable, incrementable)
+ (input_or_output_iterator, sentinel_for, disable_sized_sentinel)
+ (sized_sentinel_for, input_iterator, output_iterator)
+ (forward_iterator, bidirectional_iterator, random_access_iterator)
+ (contiguous_iterator, indirectly_unary_invocable)
+ (indirectly_regular_unary_invocable, indirect_unary_predicate)
+ (indirect_relation, indirect_strict_weak_order, indirect_result_t)
+ (projected, indirectly_movable, indirectly_movable_storable)
+ (indirectly_copyable, indirectly_copyable_storable, ranges::iter_swap)
+ (indirectly_swappable, indirectly_comparable, permutable, mergeable)
+ (sortable, unreachable_sentinel_t, unreachable_sentinel)
+ (default_sentinel_t, default_sentinel): Define.
+ (__detail::__cpp17_iterator, __detail::__cpp17_input_iterator)
+ (__detail::__cpp17_fwd_iterator, __detail::__cpp17_bidi_iterator)
+ (__detail::__cpp17_randacc_iterator): Define.
+ (__iterator_traits): Define constrained specializations.
+ * include/bits/move.h (move): Only use old concept check for C++98.
+ * include/bits/range_access.h (ranges::disable_sized_range)
+ (ranges::begin, ranges::end, ranges::cbegin, ranges::cend)
+ (ranges::rbegin, ranges::rend, ranges::crbegin, ranges::crend)
+ (ranges::size, ranges::empty, ranges::data, ranges::cdata): Define
+ new customization points for C++20.
+ (ranges::range, ranges::sized_range): Define new concepts for C++20.
+ (ranges::advance, ranges::distance, ranges::next, ranges::prev):
+ Define new functions for C++20.
+ (__adl_end, __adl_cdata, __adl_cbegin, __adl_cend, __adl_rbegin)
+ (__adl_rend, __adl_crbegin, __adl_crend, __adl_cdata, __adl_size)
+ (__adl_empty): Remove.
+ * include/bits/stl_iterator.h (disable_sized_sentinel): Specialize
+ for reverse_iterator.
+ * include/bits/stl_iterator_base_types.h (contiguous_iterator_tag):
+ Define new struct for C++20.
+ (iterator_traits<_Tp*>): Constrain partial specialization in C++20.
+ * include/std/concepts (__is_class_or_enum): Move to __detail
+ namespace.
+ * testsuite/20_util/forward/c_neg.cc: Adjust dg-error line number.
+ * testsuite/20_util/forward/f_neg.cc: Likewise.
+ * testsuite/24_iterators/associated_types/incrementable.traits.cc: New
+ test.
+ * testsuite/24_iterators/associated_types/readable.traits.cc: New test.
+ * testsuite/24_iterators/contiguous/concept.cc: New test.
+ * testsuite/24_iterators/contiguous/tag.cc: New test.
+ * testsuite/24_iterators/customization_points/iter_move.cc: New test.
+ * testsuite/24_iterators/customization_points/iter_swap.cc: New test.
+ * testsuite/24_iterators/headers/iterator/synopsis_c++20.cc: New test.
+ * testsuite/24_iterators/range_operations/advance.cc: New test.
+ * testsuite/24_iterators/range_operations/distance.cc: New test.
+ * testsuite/24_iterators/range_operations/next.cc: New test.
+ * testsuite/24_iterators/range_operations/prev.cc: New test.
+ * testsuite/26_numerics/adjacent_difference/requirements/
+ explicit_instantiation/2.cc: Rename types that conflict with C++20
+ concepts.
+ * testsuite/26_numerics/adjacent_difference/requirements/
+ explicit_instantiation/pod.cc: Likewise.
+ * testsuite/26_numerics/partial_sum/requirements/
+ explicit_instantiation/2.cc: Likewise.
+ * testsuite/26_numerics/partial_sum/requirements/
+ explicit_instantiation/pod.cc: Likewise.
+ * testsuite/experimental/iterator/requirements.cc: Likewise.
+ * testsuite/std/ranges/access/begin.cc: New test.
+ * testsuite/std/ranges/access/cbegin.cc: New test.
+ * testsuite/std/ranges/access/cdata.cc: New test.
+ * testsuite/std/ranges/access/cend.cc: New test.
+ * testsuite/std/ranges/access/crbegin.cc: New test.
+ * testsuite/std/ranges/access/crend.cc: New test.
+ * testsuite/std/ranges/access/data.cc: New test.
+ * testsuite/std/ranges/access/empty.cc: New test.
+ * testsuite/std/ranges/access/end.cc: New test.
+ * testsuite/std/ranges/access/rbegin.cc: New test.
+ * testsuite/std/ranges/access/rend.cc: New test.
+ * testsuite/std/ranges/access/size.cc: New test.
+ * testsuite/util/testsuite_iterators.h (contiguous_iterator_wrapper)
+ (test_range, test_sized_range): New test utilities.
+
* testsuite/util/testsuite_iterators.h (BoundsContainer::size()): Add
new member function.
(WritableObject::operator=): Constrain with enable_if when available.
* doc/xml/manual/codecvt.xml: Switch pubs.opengroup.org to https.
* doc/xml/manual/locale.xml (LC_ALL): Ditto.
* doc/xml/manual/messages.xml: Ditto.
-
+
2019-10-26 John David Anglin <danglin@gcc.gnu.org>
* config/abi/post/hppa-linux-gnu/baseline_symbols.txt: Update.
pubs.opengroup.org to https.
2019-10-25 Gerald Pfeifer <gerald@pfeifer.com>
-
+
* doc/xml/gnu/gpl-3.0.xml: Switch www.gnu.org to https.
2019-09-09 Edward Smith-Rowland <3dw4rd@verizon.net>
PSTL backend if no TBB present.
* testsuite/utils/pstl/test_utils.h: Remove check for
_PSTL_USE_PAR_POLICIES
-
+
2019-06-07 Jonathan Wakely <jwakely@redhat.com>
* testsuite/24_iterators/container_access.cc: Move dg-options before
Document PSTL linker flags
* doc/xml/manual/using.xml: Add PSTL linker flags to table 3.1.
-
+
2019-04-23 Jonathan Wakely <jwakely@redhat.com>
* include/std/variant (__detail::__variant::_Traits): Make
* include/bits/c++config: Remove explicit PSTL configuration
macros and use definitions from <pstl/pstl_config.h>.
-
+
2019-04-20 Thomas Rodgers <trodgers@redhat.com>
Cleanup algorithm implementations
(equal): Qualify call to std::equal().
(partial_sort): Forward execution policy.
(inplace_merge): Forward execution policy.
-
+
2019-04-19 Thomas Rodgers <trodgers@redhat.com>
-
+
Improve implementation of parallel equal()
* include/pstl/algorithm_impl.h
(__internal::__brick_equal): use "4 iterator" version of
* include/pstl/glue_algorithm_impl.h
(std::equal): dispatch to "4 iterator" version of
__internal::__pattern_equal().
-
+
2019-04-17 Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/90105
* testsuite/20_util/optional/observers/4.cc: Likewise.
2019-04-12 Thomas Rodgers <trodgers@redhat.com>
-
+
* include/pstl/algorithm_impl.h: Uglify identfiers.
* include/pstl/numeric_impl.h: Uglify identfiers.
* include/pstl/parallel_backend_tbb.h: Uglify identfiers.
avoid -Wconversion warnings.
2019-03-21 Thomas Rodgers <trodgers@redhat.com>
-
+
* include/Makefile.am (std_header): Add ${std_srcdir}/execution.
(pstl_srcdir, pstl_builddir, pstl_headers): New variables.
(allstamped): Add stamp-pstl.
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