2021-10-15 Jonathan Wakely * include/bits/fs_path.h (path::_S_convert(T)): Avoid recursive call to function with deduced return type. 2021-10-15 Jonathan Wakely * include/bits/basic_string.h (__cpp_lib_string_resize_and_overwrite): Define for C++23. (basic_string::resize_and_overwrite): Declare. * include/bits/basic_string.tcc (basic_string::resize_and_overwrite): Define. * include/std/version (__cpp_lib_resize_and_overwrite): Define for C++23. * testsuite/21_strings/basic_string/capacity/char/resize_and_overwrite.cc: New test. 2021-10-15 Jonathan Wakely PR libstdc++/101263 * include/std/ranges (__cached): New wrapper struct. (__non_propagating_cache): Use __cached for contained value. (__non_propagating_cache::_M_emplace_deref): Add constexpr. Use std::construct_at instead of placement new. * testsuite/std/ranges/adaptors/join.cc: Check constexpr works. 2021-10-15 Jonathan Wakely * include/std/variant (__cpp_lib_variant): Update value for C++20. (__variant_cast, __variant_construct): Add constexpr for C++20. (__variant_construct_single, __construct_by_index) Likewise. Use std::_Construct instead of placement new. (_Uninitialized) [__cplusplus >= 202002]: Replace buffer with a union and define a destructor. (_Variadic_union) [__cplusplus >= 202002]: Add a specialization for non-trivial destruction. (_Variant_storage::__index_of): New helper variable template. (_Variant_storage::~_Variant_storage()): Add constexpr. (_Variant_storage::_M_reset()): Likewise. (_Copy_ctor_base, _Move_ctor_base): Likewise. (_Copy_assign_base, _Move_assign_base): Likewise. (variant, swap): Likewise. * include/std/version (__cpp_lib_variant): Update value for C++20. * testsuite/20_util/optional/version.cc: Check for exact value in C++17. * testsuite/20_util/variant/87619.cc: Increase timeout for C++20 mode. * testsuite/20_util/variant/constexpr.cc: New test. * testsuite/20_util/variant/version.cc: New test. 2021-10-15 Jonathan Wakely * include/std/variant (__detail::__variant::__get_storage): Remove unused function. (__variant_construct_by_index): Set index after construction is complete. Rename to ... (__detail::__variant::__construct_by_index): ... this. (variant): Use new name for __variant_construct_by_index friend declaration. Remove __get_storage friend declaration. (variant::emplace): Use new name and remove try-blocks. 2021-10-15 Jonathan Wakely * include/std/variant (_Variant_storage::_M_storage()): Remove. (__detail::__variant::__get_storage): Remove. (variant): Remove friend declaration of __get_storage. 2021-10-15 Jason Merrill * testsuite/20_util/integer_comparisons/greater_equal_neg.cc: * testsuite/20_util/integer_comparisons/greater_neg.cc: * testsuite/20_util/integer_comparisons/less_equal_neg.cc: Adjust expected message. * testsuite/lib/prune.exp: Prune 'in constexpr expansion'. 2021-10-14 Jonathan Wakely * include/std/variant (__variant::__get(in_place_index_t, U&&)): Rename to __get_n and remove first argument. Replace pair of overloads with a single function using 'if constexpr'. (__variant::__get(Variant&&)): Adjust to use __get_n. 2021-10-14 Jonathan Wakely * include/bits/fs_path.h (path(path&&)): Make unconditionally noexcept. (path::_S_convert(T)): Add condtional noexcept. 2021-10-14 Jonathan Wakely PR libstdc++/102743 * include/bits/fs_path.h (path::_S_convert(T)): Fix condition for returning the same string unchanged. 2021-10-14 Jonathan Wakely * include/bits/regex.h: Check __cpp_inline_variables instead of __cplusplus. 2021-10-14 Jonathan Wakely * testsuite/20_util/is_layout_compatible/version.cc: Check correct macro. 2021-10-14 Jonathan Wakely * include/bits/stl_construct.h (_Construct): Use std::construct_at when constant evaluated. * include/std/optional (_Storage, _Optional_payload, optional): Add constexpr as specified by P2231R1. * include/std/version (__cpp_lib_optional): Update value for C++20. * testsuite/20_util/optional/requirements.cc: Check feature test macro. * testsuite/20_util/optional/constexpr/assign.cc: New test. * testsuite/20_util/optional/constexpr/cons/conv.cc: New test. * testsuite/20_util/optional/constexpr/modifiers.cc: New test. * testsuite/20_util/optional/constexpr/swap.cc: New test. * testsuite/20_util/optional/version.cc: New test. 2021-10-13 Jonathan Wakely * include/bits/fs_path.h (__detail::__is_contiguous): Add partial specializations for pointers and __normal_iterator. 2021-10-13 Jonathan Wakely * testsuite/27_io/filesystem/path/construct/102592.C: Moved to... * testsuite/27_io/filesystem/path/construct/102592.cc: ...here. * testsuite/28_regex/match_results/102667.C: Moved to... * testsuite/28_regex/match_results/102667.cc: ...here. 2021-10-13 Jonathan Wakely * include/bits/fs_path.h (__detail::__is_contiguous): New variable template to identify contiguous iterators. (__detail::__unified_char8_t): New alias template to decide when to treat char8_t as char without encoding conversion. (__detail::__effective_range(const basic_string&)): Use std::char_traits for returned string view. (__detail::__effective_range(const basic_string_view&)): Likewise. (__detail::__effective_range(const Source&)): Use __is_contiguous to detect mode cases of contiguous iterators. Use __unified_char8_t to return a std::string instead of std::u8string. 2021-10-13 Jonathan Wakely PR libstdc++/102592 * include/bits/fs_path.h (path::path(Iter, Iter, format)) (path::append(Iter, Iter), path::concat(Iter, Iter)): Call __string_from_range directly, instead of two-argument overload of _S_convert. (path::_S_convert(Iter, Iter)): Remove. * testsuite/27_io/filesystem/path/construct/102592.C: New test. 2021-10-13 Jonathan Wakely * include/bits/c++config (__terminate): Add extern "C++". 2021-10-12 Jonathan Wakely * testsuite/20_util/tuple/comparison_operators/overloaded.cc: Restore test for operator<. * testsuite/20_util/tuple/comparison_operators/overloaded2.cc: Adjust expected errors for C++20. 2021-10-12 Jonathan Wakely PR libstdc++/101960 * include/std/tuple (_Tuple_impl(_Tuple_impl&&)): Define as defauled. * testsuite/20_util/tuple/cons/101960.cc: Check tuples with array elements before the last element. 2021-10-12 Jonathan Wakely * include/bits/stl_iterator_base_funcs.h (__advance): Add deleted overload to improve diagnostics. (__distance): Likewise. 2021-10-11 Jonathan Wakely * include/bits/atomic_timed_wait.h: Remove unused header. * include/bits/c++config (std:__terminate): Define. * include/bits/semaphore_base.h: Remove and use __terminate instead of terminate. * include/bits/std_thread.h: Likewise. * libsupc++/eh_terminate.cc (std::terminate): Use qualified-id to call __cxxabiv1::__terminate. 2021-10-11 Jonathan Wakely * include/bits/regex.h (basic_regex::assign(Iter, Iter)): Avoid std::__to_address by using poitner directly or using base() member of __normal_iterator. 2021-10-11 Jonathan Wakely * testsuite/18_support/numeric_limits/lowest.cc: Use numeric_limits::is_integer instead of is_integral::value. 2021-10-11 Jonathan Wakely PR libstdc++/89927 * include/bits/regex.h (basic_regex(const _Ch_type*, size_t)): Add __glibcxx_requires_string_len assertion. (basic_regex::assign(InputIterator, InputIterator)): Add __glibcxx_requires_valid_range assertion. * include/bits/regex_scanner.tcc (_Scanner::_M_advance()) (_Scanner::_M_scan_normal()): Use string literal in assertions. 2021-10-11 Jonathan Wakely PR libstdc++/102667 * include/bits/regex.h (match_result::empty()): Optimize by calling the base function directly. (match_results::end()): Check _Base_type::empty() not empty(). * testsuite/28_regex/match_results/102667.C: New test. 2021-10-08 Jonathan Wakely PR libstdc++/98725 * testsuite/18_support/numeric_limits/lowest.cc: Remove use of _GLIBCXX_USE_WCHAR_T. * testsuite/18_support/numeric_limits/min_max.cc: Replace use of _GLIBCXX_USE_WCHAR_T with checks for WCHAR_MIN and WCHAR_MAX. * testsuite/20_util/from_chars/1_neg.cc: Remove use of _GLIBCXX_USE_WCHAR_T. * testsuite/20_util/function_objects/searchers.cc: Likewise. Use char_traits::length instead of wcslen. * testsuite/20_util/hash/requirements/explicit_instantiation.cc: Likewise. * testsuite/20_util/is_arithmetic/value.cc: Likewise. * testsuite/20_util/is_compound/value.cc: Likewise. * testsuite/20_util/is_floating_point/value.cc: Likewise. * testsuite/20_util/is_fundamental/value.cc: Likewise. * testsuite/20_util/is_integral/value.cc: Likewise. * testsuite/20_util/is_signed/value.cc: Likewise. * testsuite/20_util/is_unsigned/value.cc: Likewise. * testsuite/20_util/is_void/value.cc: Likewise. * testsuite/20_util/make_signed/requirements/typedefs-1.cc: Likewise. * testsuite/20_util/make_signed/requirements/typedefs-2.cc: Likewise. * testsuite/20_util/make_signed/requirements/typedefs-3.cc: Likewise. * testsuite/20_util/make_signed/requirements/typedefs-4.cc: Likewise. * testsuite/20_util/make_unsigned/requirements/typedefs-1.cc: Likewise. * testsuite/20_util/make_unsigned/requirements/typedefs-2.cc: Likewise. * testsuite/20_util/make_unsigned/requirements/typedefs-3.cc: Likewise. * testsuite/20_util/to_chars/3.cc: Likewise. * testsuite/20_util/type_identity/requirements/typedefs.cc: Likewise. * testsuite/21_strings/basic_string/hash/debug.cc: Likewise. * testsuite/21_strings/basic_string/hash/hash.cc: Likewise. * testsuite/21_strings/basic_string/literals/types-char8_t.cc: Likewise. * testsuite/21_strings/basic_string/literals/types.cc: Likewise. * testsuite/21_strings/basic_string/literals/values-char8_t.cc: Likewise. * testsuite/21_strings/basic_string/literals/values.cc: Likewise. * testsuite/21_strings/basic_string/modifiers/64422.cc: Likewise. * testsuite/21_strings/basic_string/range_access/wchar_t/1.cc: Likewise. * testsuite/21_strings/basic_string/requirements/citerators.cc: Likewise. * testsuite/21_strings/basic_string/requirements/typedefs.cc: Likewise. * testsuite/21_strings/basic_string/types/pmr_typedefs.cc: Likewise. * testsuite/21_strings/basic_string_view/literals/types-char8_t.cc: Likewise. * testsuite/21_strings/basic_string_view/literals/types.cc: Likewise. * testsuite/21_strings/basic_string_view/literals/values-char8_t.cc: Likewise. * testsuite/21_strings/basic_string_view/literals/values.cc: Likewise. * testsuite/21_strings/basic_string_view/requirements/typedefs.cc: Likewise. * testsuite/21_strings/basic_string_view/typedefs.cc: Likewise. * testsuite/21_strings/char_traits/requirements/constexpr_functions.cc: Likewise. * testsuite/21_strings/char_traits/requirements/constexpr_functions_c++17.cc: Likewise. * testsuite/21_strings/char_traits/requirements/constexpr_functions_c++20.cc: Likewise. * testsuite/22_locale/ctype/is/string/89728_neg.cc: Likewise. * testsuite/25_algorithms/fill/4.cc: Likewise. * testsuite/25_algorithms/fill_n/1.cc: Likewise. * testsuite/experimental/functional/searchers.cc: Likewise. Use char_traits::length instead of wcslen. * testsuite/experimental/polymorphic_allocator/pmr_typedefs_string.cc: Likewise. * testsuite/experimental/string_view/literals/types-char8_t.cc: Likewise. * testsuite/experimental/string_view/literals/types.cc: Likewise. * testsuite/experimental/string_view/literals/values-char8_t.cc: Likewise. * testsuite/experimental/string_view/literals/values.cc: Likewise. * testsuite/experimental/string_view/range_access/wchar_t/1.cc: Likewise. * testsuite/experimental/string_view/requirements/typedefs.cc: Likewise. * testsuite/experimental/string_view/typedefs.cc: Likewise. * testsuite/ext/vstring/range_access.cc: Likewise. * testsuite/std/concepts/concepts.lang/concept.arithmetic/integral.cc: Likewise. * testsuite/std/concepts/concepts.lang/concept.arithmetic/signed_integral.cc: Likewise. * testsuite/std/concepts/concepts.lang/concept.arithmetic/unsigned_integral.cc: Likewise. * testsuite/tr1/4_metaprogramming/is_arithmetic/value.cc: Likewise. * testsuite/tr1/4_metaprogramming/is_compound/value.cc: Likewise. * testsuite/tr1/4_metaprogramming/is_floating_point/value.cc: Likewise. * testsuite/tr1/4_metaprogramming/is_fundamental/value.cc: Likewise. * testsuite/tr1/4_metaprogramming/is_integral/value.cc: Likewise. * testsuite/tr1/4_metaprogramming/is_signed/value.cc: Likewise. * testsuite/tr1/4_metaprogramming/is_unsigned/value.cc: Likewise. * testsuite/tr1/4_metaprogramming/is_void/value.cc: Likewise. * testsuite/tr1/6_containers/hash/24799.cc: Likewise. 2021-10-08 Jonathan Wakely PR libstdc++/98725 * include/std/ostream (operator<<(basic_ostream&, wchar_t)) (operator<<(basic_ostream&, const wchar_t*)): Always define as deleted. Do not check _GLIBCXX_USE_WCHAR_T. 2021-10-08 Jonathan Wakely PR libstdc++/98725 * include/bits/locale_conv.h (wstring_convert, wbuffer_convert): Define unconditionally. Do not check _GLIBCXX_USE_WCHAR_T. 2021-10-08 Jonathan Wakely PR libstdc++/98725 * include/c_global/cstddef [!_GLIBCXX_USE_WCHAR_T] (__byte_operand): Define specialization. * include/std/type_traits (__make_signed) (__make_unsigned): Remove redundant check for __WCHAR_TYPE__ being defined. * include/tr1/type_traits [!_GLIBCXX_USE_WCHAR_T] (__is_integral_helper): Likewise. 2021-10-08 Jonathan Wakely PR libstdc++/98725 * include/ext/rc_string_base.h [!_GLIBCXX_USE_WCHAR_T] (__rc_string_base): Define member function. * include/ext/vstring.h [!_GLIBCXX_USE_WCHAR_T] (hash<__gnu_cxx::__wvstring>): Define specialization. * include/ext/vstring_fwd.h [!_GLIBCXX_USE_WCHAR_T] (__wvstring) (__wsso_string, __wrc_string): Declare typedefs. 2021-10-08 Jonathan Wakely PR libstdc++/98725 * include/bits/char_traits.h (char_traits): Define explicit specialization unconditionally. * include/bits/basic_string.h (hash): Define unconditionally. Do not check _GLIBCXX_USE_WCHAR_T. * include/bits/stringfwd.h (wstring): Likewise. * include/debug/string (wstring): Likewise. * include/experimental/string_view (experimental::wstring_view) (hash): Likewise. * include/std/string (pmr::wstring, hash): Likewise. * include/std/string_view (wstring_view, hash): Likewise. 2021-10-08 Jonathan Wakely * testsuite/27_io/basic_filebuf/close/81256.cc: Moved to... * testsuite/27_io/basic_filebuf/close/wchar_t/81256.cc: ...here. 2021-10-08 Jonathan Wakely * testsuite/22_locale/conversions/buffer/1.cc: Check _GLIBCXX_USE_WCHAR_T. * testsuite/22_locale/conversions/buffer/3.cc: Likewise. Add test using char16_t. * testsuite/22_locale/conversions/string/1.cc: Check _GLIBCXX_USE_WCHAR_T. * testsuite/27_io/filesystem/path/generic/generic_string.cc: Likewise. * testsuite/27_io/filesystem/path/modifiers/make_preferred.cc: Likewise. * testsuite/27_io/filesystem/path/native/alloc.cc: Likewise. * testsuite/27_io/filesystem/path/native/string-char8_t.cc: Likewise. * testsuite/27_io/filesystem/path/native/string.cc: Likewise. * testsuite/28_regex/algorithms/regex_match/extended/wstring_locale.cc: Likewise. * testsuite/experimental/filesystem/path/generic/generic_string.cc: Likewise. * testsuite/experimental/filesystem/path/native/alloc.cc: Likewise. * testsuite/experimental/filesystem/path/native/string-char8_t.cc: Likewise. * testsuite/experimental/filesystem/path/native/string.cc: Likewise. 2021-10-08 Jonathan Wakely * testsuite/26_numerics/bit/bit.rotate/rotr.cc: * testsuite/util/testsuite_common_types.h: 2021-10-08 Jonathan Wakely * testsuite/18_support/numeric_limits/40856.cc: Replace use of _GLIBCXX_USE_INT128. * testsuite/18_support/numeric_limits/dr559.cc: Likewise. * testsuite/18_support/numeric_limits/lowest.cc: Likewise. * testsuite/18_support/numeric_limits/max_digits10.cc: Likewise. * testsuite/20_util/is_floating_point/value.cc: Likewise. * testsuite/20_util/is_integral/value.cc: Likewise. * testsuite/20_util/is_signed/value.cc: Likewise. * testsuite/20_util/is_unsigned/value.cc: Likewise. * testsuite/20_util/make_signed/requirements/typedefs-1.cc: Likewise. * testsuite/20_util/make_signed/requirements/typedefs-2.cc: Likewise. * testsuite/20_util/make_unsigned/requirements/typedefs-1.cc: Likewise. * testsuite/20_util/make_unsigned/requirements/typedefs-2.cc: Likewise. * testsuite/20_util/type_identity/requirements/typedefs.cc: Likewise. * testsuite/26_numerics/bit/bit.count/countl_one.cc: Likewise. * testsuite/26_numerics/bit/bit.count/countl_zero.cc: Likewise. * testsuite/26_numerics/bit/bit.count/countr_one.cc: Likewise. * testsuite/26_numerics/bit/bit.count/countr_zero.cc: Likewise. * testsuite/26_numerics/bit/bit.count/popcount.cc: Likewise. * testsuite/26_numerics/bit/bit.pow.two/bit_ceil.cc: Likewise. * testsuite/26_numerics/bit/bit.pow.two/bit_floor.cc: Likewise. * testsuite/26_numerics/bit/bit.pow.two/bit_width.cc: Likewise. * testsuite/26_numerics/bit/bit.pow.two/has_single_bit.cc: Likewise. * testsuite/26_numerics/bit/bit.rotate/rotl.cc: Likewise. 2021-10-08 Jonathan Wakely * include/bits/hashtable_policy.h (_Select1st): Replace use of std::get. (_Select2nd): Remove. (_NodeBuilder::_S_build): Use _NodeGenerator::__node_type typedef instead of deducing it. Remove unnecessary piecewise construction. (_ReuseOrAllocNode): Make __node_type public. (_Map_base): Adjust partial specialization to be able to extract the mapped_type without using tuple_element. (_Map_base::at): Define inline * testsuite/23_containers/unordered_map/requirements/53339.cc: Remove XFAIL. * testsuite/23_containers/unordered_multimap/requirements/53339.cc: Likewise. 2021-10-08 Jonathan Wakely * include/bits/hashtable.h: Move static assertion to destructor. * include/bits/hashtable_policy.h: Deduce value type from node type without instantiating it. 2021-10-08 Jonathan Wakely * src/c++11/limits.cc: Fail if __cpp_inline_variables is defined. 2021-10-08 Jonathan Wakely PR libstdc++/92546 * include/bits/ranges_algobase.h: Replace with a subset of the headers it includes. 2021-10-08 Jonathan Wakely * include/experimental/deque (erase, erase_if): Revert changes to avoid debug mode overhead. * include/experimental/map (erase, erase_if): Likewise. * include/experimental/set (erase, erase_if): Likewise. * include/experimental/unordered_map (erase, erase_if): Likewise. * include/experimental/unordered_set (erase, erase_if): Likewise. * include/experimental/vector (erase, erase_if): Likewise. * include/std/deque (erase, erase_if): Likewise. * include/std/map (erase, erase_if): Likewise. * include/std/set (erase, erase_if): Likewise. * include/std/unordered_map (erase, erase_if): Likewise. * include/std/unordered_set (erase, erase_if): Likewise. * include/std/vector (erase, erase_if): Likewise. 2021-10-08 Jonathan Wakely * include/std/chrono (__detail::__units_suffix_misc): New helper function. (__detail::__units_suffix): Likewise. (chrono::operator<<(basic_ostream&, const duration&)): Define. * testsuite/20_util/duration/io.cc: New test. 2021-10-07 Jonathan Wakely * include/Makefile.am: Add new header. * include/Makefile.in: Regenerate. * include/std/chrono (duration, time_point, system_clock) (steady_clock, high_resolution_clock, chrono_literals, sys_time) (file_clock, file_time): Move to ... * include/bits/chrono.h: New file. * include/bits/atomic_futex.h: Include new header instead of . * include/bits/atomic_timed_wait.h: Likewise. * include/bits/fs_fwd.h: Likewise. * include/bits/semaphore_base.h: Likewise. * include/bits/this_thread_sleep.h: Likewise. * include/bits/unique_lock.h: Likewise. * include/experimental/bits/fs_fwd.h: Likewise. * include/experimental/chrono: Likewise. * include/experimental/io_context: Likewise. * include/experimental/netfwd: Likewise. * include/experimental/timer: Likewise. * include/std/condition_variable: Likewise. * include/std/mutex: Likewise. * include/std/shared_mutex: Likewise. 2021-10-07 Jonathan Wakely PR libstdc++/102377 * include/bits/atomic_wait.h (__waiter_pool_base:_S_align): Hardcode to 64 instead of using non-constant constant. 2021-10-07 Jonathan Wakely * include/bits/erase_if.h (__erase_nodes_if): Remove redundant __niter_base calls. * include/std/string (erase, erase_if): Likewise. * include/std/deque (erase, erase_if): Access non-debug container directly. * include/std/map (erase, erase_if): Likewise. * include/std/set (erase, erase_if): Likewise. * include/std/unordered_map (erase, erase_if): Likewise. * include/std/unordered_set (erase, erase_if): Likewise. * include/std/vector (erase, erase_if): Likewise. * include/experimental/deque (erase, erase_if): Likewise. * include/experimental/map (erase, erase_if): Likewise. * include/experimental/set (erase, erase_if): Likewise. * include/experimental/unordered_map (erase, erase_if): Likewise. * include/experimental/unordered_set (erase, erase_if): Likewise. * include/experimental/vector (erase, erase_if): Likewise. 2021-10-06 Jonathan Wakely * include/Makefile.am: Add new headers. * include/Makefile.in: Regenerate. * include/std/functional: Include . * include/std/version (__cpp_lib_move_only_function): Define. * include/bits/mofunc_impl.h: New file. * include/bits/move_only_function.h: New file. * testsuite/20_util/move_only_function/call.cc: New test. * testsuite/20_util/move_only_function/cons.cc: New test. * testsuite/20_util/move_only_function/move.cc: New test. * testsuite/20_util/move_only_function/version.cc: New test. 2021-10-05 Jonathan Wakely * testsuite/21_strings/basic_string_view/requirements/trivially_copyable.cc: New test. * testsuite/23_containers/span/trivially_copyable.cc: New test. 2021-10-05 Jonathan Wakely * include/bits/utility.h (__is_in_place_type_v): Define variable template to detect in_place_type_t specializations. (__is_in_place_type): Replace class template with alias template using __is_in_place_type_v. * include/std/any (any(T&&)): Check __is_in_place_type first and avoid instantiating is_copy_constructible unnecessarily. 2021-10-05 Jonathan Wakely * testsuite/20_util/integer_comparisons/greater.cc: New test. 2021-10-05 Jonathan Wakely * testsuite/27_io/basic_ostream/inserters_other/char/volatile_ptr.cc: Check result matches non-volatile pointer. 2021-10-05 Jonathan Wakely PR c++/102535 * testsuite/20_util/is_trivially_constructible/value.cc: Adjust expected value for C++20. 2021-10-05 Jonathan Wakely * include/bits/std_function.h (_Any_data::_M_access): Add noexcept. (_Function_base::_Base_manager::_M_get_pointer): Likewise. (_Function_base::_Base_manager::_M_not_empty_function): Likewise. 2021-10-05 Jonathan Wakely * include/std/ostream (operator<<(const volatile void*)): Add new overload, as per P1147R1. * testsuite/27_io/basic_ostream/inserters_other/char/volatile_ptr.cc: New test. 2021-10-05 Jonathan Wakely * include/bits/stl_queue.h (__cpp_lib_adaptor_iterator_pair_constructor): Set to correct value. * include/bits/stl_stack.h (__cpp_lib_adaptor_iterator_pair_constructor): Likewise. * include/std/version (__cpp_lib_adaptor_iterator_pair_constructor): Likewise. * testsuite/23_containers/queue/cons_from_iters.cc: Update expected value. * testsuite/23_containers/stack/cons_from_iters.cc: Likewise. 2021-10-04 Jonathan Wakely * include/bits/forward_list.h (forward_list): Use non-deduced context for allocator parameter of allocator-extended copy and move constructors. * include/bits/stl_bvector.h (vector): Likewise. * include/bits/stl_deque.h (deque): Likewise. * include/bits/stl_list.h (list): Likewise. * include/bits/stl_map.h (map): Likewise. * include/bits/stl_multimap.h (multimap): Likewise. * include/bits/stl_multiset.h (multiset): Likewise. * include/bits/stl_set.h (set): Likewise. * include/bits/stl_vector.h (vector): Likewise. * include/bits/stl_queue.h (queue, priority_queue): Do not constrain Allocator template parameter of deduction guides that have a Container parameter. * include/bits/stl_stack.h (stack): Likewise. * include/debug/deque (__gnu_debug::deque): Use non-deduced context for allocator parameter of allocator-extended copy and move constructors. * include/debug/list (__gnu_debug::list): Likewise. * include/debug/map.h (__gnu_debug::map): Likewise. * include/debug/multimap.h (__gnu_debug::multimap): Likewise. * include/debug/multiset.h (__gnu_debug::multiset): Likewise. * include/debug/set.h (__gnu_debug::set): Likewise. * include/debug/vector (__gnu_debug::vector): Likewise. * testsuite/23_containers/deque/cons/deduction.cc: Test class template argument deduction with non-deduced allocator arguments. * testsuite/23_containers/forward_list/cons/deduction.cc: Likewise. * testsuite/23_containers/list/cons/deduction.cc: Likewise. * testsuite/23_containers/map/cons/deduction.cc: Likewise. * testsuite/23_containers/multimap/cons/deduction.cc: Likewise. * testsuite/23_containers/multiset/cons/deduction.cc: Likewise. * testsuite/23_containers/priority_queue/deduction.cc: Likewise. * testsuite/23_containers/queue/deduction.cc: Likewise. * testsuite/23_containers/set/cons/deduction.cc: Likewise. * testsuite/23_containers/stack/deduction.cc: Likewise. * testsuite/23_containers/unordered_map/cons/deduction.cc: Likewise. * testsuite/23_containers/unordered_multimap/cons/deduction.cc: Likewise. * testsuite/23_containers/unordered_multiset/cons/deduction.cc: Likewise. * testsuite/23_containers/unordered_set/cons/deduction.cc: Likewise. * testsuite/23_containers/vector/cons/deduction.cc: Likewise. 2021-10-04 Jonathan Wakely * include/std/variant (__detail::__variant::__as): Add missing noexcept to first overload. 2021-10-04 Jonathan Wakely * include/bits/basic_string.h (basic_string(nullptr_t)): Define as deleted. (operator=(nullptr_t)): Likewise. * include/bits/cow_string.h (basic_string(nullptr_t)): Likewise. (operator=(nullptr_t)): Likewise. * include/std/string_view (basic_string_view(nullptr_t)): Likewise. * testsuite/21_strings/basic_string/cons/char/nullptr.cc: New test. * testsuite/21_strings/basic_string_view/cons/char/nonnull.cc: Change dg-warning to dg-error. * testsuite/21_strings/basic_string_view/cons/wchar_t/nonnull.cc: Likewise. 2021-10-02 Jonathan Wakely * src/c++17/fs_ops.cc (create_directory): Fix typo in enum name. * src/filesystem/ops-common.h (__last_system_error): Add explicit cast to avoid narrowing conversion. (do_space): Fix type in function name. 2021-10-01 Jonathan Wakely PR libstdc++/102100 * include/Makefile.am (c++config.h): Define _GLIBCXX_VERBOSE_ASSERT based on configure output. * include/Makefile.in: Regenerate. * include/bits/c++config: Fix condition for verbose assertions. 2021-10-01 Jonathan Wakely PR libstdc++/92546 * include/bits/erase_if.h (__erase_nodes_if): Use __niter_base to unwrap debug iterators. * include/bits/refwrap.h: Do not error if included in C++03. * include/bits/stl_algo.h (__remove_if): Move to ... * include/bits/stl_algobase.h (__remove_if): ... here. * include/std/deque (erase, erase_if): Use __remove_if instead of remove and remove_if. * include/std/string (erase, erase_if): Likewise. * include/std/vector (erase, erase_if): Likewise. 2021-10-01 Jonathan Wakely PR libstdc++/66742 * include/bits/list.tcc (list::sort()): Use _Scratch_list objects for splicing and merging. (list::sort(StrictWeakOrdering)): Likewise. * include/bits/stl_list.h (__detail::_Scratch_list): New type. * src/c++98/list.cc (_List_node_base::_M_transfer): Add assertion for --enable-libstdcxx-debug library. * testsuite/23_containers/list/operations/66742.cc: New test. 2021-10-01 Jonathan Wakely PR libstdc++/100612 * include/std/thread (__pmf_expects_stop_token): New variable template to detect a pointer to member function that needs a stop_token to be added to the arguments. (jthread::__S_create): Use __pmf_expects_stop_token. (jthread::__S_create_pmf): New function. * testsuite/30_threads/jthread/100612.cc: New test. 2021-10-01 Jonathan Wakely * include/bits/stl_queue.h (__cpp_lib_adaptor_iterator_pair_constructor): Define for C++23, as per P1425R4. (queue(InputIterator, InputIterator)): Likewise. (queue(InputIterator, InputIterator, const Alloc&)): Likewise. * include/bits/stl_stack.h (__cpp_lib_adaptor_iterator_pair_constructor): Likewise. (stack(InputIterator, InputIterator)): Likewise. (stack(InputIterator, InputIterator, const Alloc&)): Likewise. * include/std/version (__cpp_lib_adaptor_iterator_pair_constructor): Define. * testsuite/23_containers/queue/cons_from_iters.cc: New test. * testsuite/23_containers/stack/cons_from_iters.cc: New test. 2021-10-01 Jonathan Wakely * include/bits/stl_queue.h (priority_queue): Add allocator-extended overloads for constructors taking iterator. * testsuite/23_containers/priority_queue/lwg3506.cc: New test. 2021-10-01 Jonathan Wakely * include/bits/stl_queue.h (priority_queue): Construct sequence from iterators when no sequence argument is present (LWG 3529). * testsuite/23_containers/priority_queue/lwg3529.cc: New test. 2021-10-01 Jonathan Wakely * include/bits/stl_queue.h (priority_queue): Constrain constructors with InputIterator parameters (LWG 3522). * testsuite/23_containers/priority_queue/lwg3522.cc: New test. 2021-10-01 Jonathan Wakely * include/bits/ranges_base.h (ranges::distance): Split overload into two (LWG 3392). * testsuite/24_iterators/range_operations/lwg3392.cc: New test. 2021-10-01 Jonathan Wakely * testsuite/30_threads/thread/cons/3.cc: Remove derivation from std::unary_function. * testsuite/30_threads/thread/cons/4.cc: Likewise. * testsuite/30_threads/thread/cons/5.cc: Likewise. 2021-10-01 Jonathan Wakely * testsuite/ext/pb_ds/example/basic_multimap.cc: Remove unnecesary derivation from std::unary_function. * testsuite/ext/pb_ds/example/erase_if.cc: Likewise. * testsuite/ext/pb_ds/example/hash_illegal_resize.cc: Likewise. * testsuite/ext/pb_ds/example/hash_initial_size.cc: Likewise. * testsuite/ext/pb_ds/example/hash_load_set_change.cc: Likewise. * testsuite/ext/pb_ds/example/hash_mod.cc: Likewise. * testsuite/ext/pb_ds/example/hash_resize.cc: Likewise. * testsuite/ext/pb_ds/example/hash_shift_mask.cc: Likewise. * testsuite/ext/pb_ds/example/priority_queue_dijkstra.cc: Likewise. * testsuite/ext/pb_ds/example/ranged_hash.cc: Likewise. * testsuite/ext/pb_ds/example/store_hash.cc: Likewise. 2021-10-01 Jonathan Wakely * src/c++11/functexcept.cc (__throw_out_of_range_fmt): Do not expand the format string for freestanding, or non-vebose, or if we're just going to abort anyway. * src/c++11/snprintf_lite.cc: Remove unused header and declaration. 2021-10-01 Jonathan Wakely * include/std/variant (__do_visit): Use variant_npos instead of literal -1 that requires a narrowing conversion. 2021-10-01 Jonathan Wakely PR libstdc++/99327 * src/filesystem/ops-common.h (__unsupported): New function to return a suitable error code for missing functionality. (posix::off_t): New typedef. (posix::*): Set errno to ENOSYS instead of ENOTSUP for no-op fallback implementations. (do_copy_file): Replace uses of errc::not_supported. * src/c++17/fs_ops.cc (fs::copy, fs::copy_file, create_dir) (fs::create_directory, fs::create_directory_symlink) (fs::create_hard_link, fs::create_symlink, fs::current_path) (fs::equivalent, do_stat, fs::file_size, fs::hard_link_count) (fs::last_write_time, fs::permissions, fs::read_symlink): Replace uses of errc::not_supported. (fs::resize_file): Qualify off_t. * src/filesystem/ops.cc (fs::copy, fs::copy_file, create_dir) (fs::create_directory, fs::create_directory_symlink) (fs::create_hard_link, fs::create_symlink, fs::current_path) (fs::equivalent, do_stat, fs::file_size, fs::last_write_time) (fs::permissions, fs::read_symlink, fs::system_complete): Replace uses of errc::not_supported. (fs::resize_file): Qualify off_t and enable unconditionally. * testsuite/19_diagnostics/system_error/cons-1.cc: Likewise. 2021-10-01 Jonathan Wakely * src/filesystem/ops-common.h (last_error): New helper function. (filesystem::do_space): Use last_error(). * src/c++17/fs_ops.cc (fs::absolute, fs::create_hard_link) (fs::equivalent, fs::remove, fs::temp_directory_path): Use last_error(). * src/filesystem/ops.cc (fs::create_hard_link) (fs::remove, fs::temp_directory_path): Likewise. 2021-10-01 Jonathan Wakely * include/std/type_traits (__conditional): New class template for internal uses of std::conditional. (__conditional_t): New alias template to replace conditional_t. (__and_, __or_, __result_of_memfun, __result_of_memobj): Use __conditional_t instead of conditional::type. * include/bits/atomic_base.h (__atomic_impl::_Diff): Likewise. * include/bits/hashtable.h (_Hashtable): Likewise. * include/bits/hashtable_policy.h (_Node_iterator, _Insert_base) (_Local_iterator): Likewise. Replace typedefs with using-declarations. * include/bits/move.h (move_if_noexcept): Use __conditional_t. * include/bits/parse_numbers.h (_Select_int_base): Likewise. * include/bits/ptr_traits.h (__make_not_void): Likewise. * include/bits/ranges_algobase.h (__copy_or_move_backward) (__copy_or_move): Likewise. * include/bits/ranges_base.h (borrowed_iterator_t): Likewise. * include/bits/ranges_util.h (borrowed_subrange_t): Likewise. * include/bits/regex_compiler.h (_BracketMatcher): Use __conditional_t. Replace typedefs with using-declarations. * include/bits/shared_ptr_base.h (__shared_count): Use __conditional_t. * include/bits/stl_algobase.h (__copy_move, __copy_move_backward): Likewise. * include/bits/stl_iterator.h (__detail::__clamp_iter_cat) (reverse_iterator::iterator_concept) (__make_move_if_noexcept_iterator) (iterator_traits>) (iterator_traits>): Likewise. * include/bits/stl_pair.h (_PCC, pair::operator=): Likewise. * include/bits/stl_tree.h (_Rb_tree::insert_return_type) (_Rb_tree::_M_clone_node): Likewise. * include/bits/unique_ptr.h (unique_ptr(unique_ptr&&)): Likewise. * include/bits/uses_allocator.h (__uses_alloc): Likewise. (__is_uses_allocator_predicate): Likewise. * include/debug/functions.h (__foreign_iterator_aux2): Likewise. * include/experimental/any (any::_Manager, __any_caster): Likewise. * include/experimental/executor (async_completion): Likewise. * include/experimental/functional (__boyer_moore_base_t): Likewise. * include/std/any (any::_Manager): Likewise. * include/std/functional (__boyer_moore_base_t): Likewise. * include/std/ranges (borrowed_iterator_t) (borrowed_subrange_t, __detail::__maybe_present_t) (__detail::__maybe_const_t, split_view): Likewise. * include/std/tuple (__empty_not_final, tuple::operator=): Likewise. * include/std/variant (__detail::__variant::__get_t): Likewise. 2021-10-01 Jonathan Wakely PR libstdc++/78113 * include/std/variant (__do_visit): Use a switch when we have a single variant with a small number of alternatives. 2021-10-01 Jonathan Wakely PR libstdc++/90943 * include/std/variant (__cpp_lib_variant): Update value. (__detail::__variant::__as): New helpers implementing the as-variant exposition-only function templates. (visit, visit): Use __as to upcast the variant parameters. * include/std/version (__cpp_lib_variant): Update value. * testsuite/20_util/variant/visit_inherited.cc: New test. 2021-10-01 Jonathan Wakely * include/bits/stl_iterator.h (__normal_iterator): Simplify converting constructor and do not require _Container::pointer. 2021-10-01 Jonathan Wakely * include/bits/cow_string.h [_GLIBCXX_FULLY_DYNAMIC_STRING] (basic_string(basic_string&&)): Add noexcept and avoid allocation, by sharing rep with the rvalue string. 2021-10-01 Jonathan Wakely * include/bits/stl_iterator.h (common_iterator::__arrow_proxy) (common_iterator::__postfix_proxy): Add noexcept. 2021-10-01 Jonathan Wakely PR libstdc++/94418 * include/bits/stl_iterator.h (reverse_iterator): Use conditional noexcept on constructors and assignment operators. * testsuite/24_iterators/reverse_iterator/noexcept.cc: New test. 2021-10-01 Jonathan Wakely PR libstdc++/100153 * include/bits/vector.tcc (vector::_M_shrink_to_fit()): When size() is zero just deallocate and reset. 2021-10-01 Jonathan Wakely PR libstdc++/96733 * include/bits/stl_algo.h (clamp): Use std::min and std::max. 2021-10-01 Jonathan Wakely * include/bits/regex.h (basic_regex::multiline): Define for non-strict C++11 and C++14 modes. * include/bits/regex_constants.h (regex_constants::multiline): Add _GLIBCXX_RESOLVE_LIB_DEFECTS comment. 2021-10-01 Jonathan Wakely * testsuite/25_algorithms/is_permutation/2.cc: Include . 2021-10-01 Jonathan Wakely * include/bits/stream_iterator.h (istream_iterator): Add noexcept to constructors and non-throwing member functions and friend functions. (ostream_iterator): Likewise. 2021-10-01 Jonathan Wakely * include/bits/boost_concept_check.h (_Is_vector_bool_iterator): New trait to identify vector iterators, including debug ones. (_ForwardIteratorReferenceConcept): Add default template argument using _Is_vector_bool_iterator and use it in partial specialization for the vector cases. (_Mutable_ForwardIteratorReferenceConcept): Likewise. * testsuite/24_iterators/operations/prev_neg.cc: Adjust dg-error line number. 2021-10-01 Jonathan Wakely * include/bits/list.tcc (list::merge): Remove call to size() and try-catch block. Use _Finalize_merge instead. * include/bits/stl_list.h (list::_Finalize_merge): New scope guard type to update _M_size members after a merge. 2021-09-30 Jonathan Wakely * include/bits/regex.h (basic_regex::multiline): Fix #if condition. 2021-09-29 Jonathan Wakely * include/bits/regex.h (basic_regex::multiline): Define constant for C++17. * include/bits/regex_constants.h (regex_constants::multiline): Define constant for C++17. (regex_constants::__multiline): Define duplicate constant for internal use in C++11 and C++14. * include/bits/regex_executor.h (_Executor::_M_match_multiline()): New member function. (_Executor::_M_is_line_terminator(_CharT)): New member function. (_Executor::_M_at_begin(), _Executor::_M_at_end()): Use new member functions to support multiline matches. * testsuite/28_regex/algorithms/regex_match/multiline.cc: New test. 2021-09-29 Jonathan Wakely * include/bits/regex_compiler.h (_Compiler::_S_validate): New function. * include/bits/regex_compiler.tcc (_Compiler::_Compiler): Use _S_validate to check flags. * include/bits/regex_error.h (_S_grammar): New error code for internal use. * testsuite/28_regex/basic_regex/ctors/grammar.cc: New test. 2021-09-29 Jonathan Wakely PR libstdc++/84110 * include/bits/regex_error.h (regex_constants::_S_null): New error code for internal use. * include/bits/regex_scanner.tcc (_Scanner::_M_scan_normal()): Check for null character. * testsuite/28_regex/basic_regex/84110.cc: New test. 2021-09-29 Jonathan Wakely * include/bits/regex.h (__detail::__is_contiguous_iter): Move here from . (basic_regex::_M_compile): New function to compile an NFA from a regular expression string. (basic_regex::basic_regex): Use _M_compile instead of delegating to other constructors. (basic_regex::operator=(const basic_regex&)): Define as defaulted. (basic_regex::operator=(initializer_list)): Use _M_compile. (basic_regex::assign(const basic_regex&)): Use copy assignment. (basic_regex::assign(basic_regex&&)): Use move assignment. (basic_regex::assign(const C*, flag_type)): Use _M_compile instead of constructing a temporary string. (basic_regex::assign(const C*, size_t, flag_type)): Likewise. (basic_regex::assign(const basic_string&, flag_type)): Use _M_compile instead of constructing a temporary basic_regex. (basic_regex::assign(InputIter, InputIter, flag_type)): Avoid constructing a temporary string for contiguous iterators of the right value type. * include/bits/regex_compiler.h (__is_contiguous_iter): Move to . (__enable_if_contiguous_iter, __disable_if_contiguous_iter) (__compile_nfa): Remove. * testsuite/28_regex/basic_regex/assign/exception_safety.cc: New test. * testsuite/28_regex/basic_regex/ctors/char/other.cc: New test. 2021-09-28 Jonathan Wakely * include/bits/atomic_timed_wait.h (__platform_wait_until_impl): Return false for ETIMEDOUT and true otherwise. 2021-09-28 François Dumont * testsuite/20_util/default_delete/48631_neg.cc: Adapt dg-prune-output message to also match message with '__8' in it. 2021-09-28 Jonathan Wakely * include/bits/regex_automaton.h (_NFA_base::_SizeT): Remove. * include/bits/regex_compiler.h (_Compiler::_IterT): Remove. * include/bits/regex_compiler.tcc: Likewise. * include/bits/regex_scanner.h (_Scanner::_IterT): Remove. * include/bits/regex_scanner.tcc: Likewise. 2021-09-28 Jonathan Wakely * include/bits/regex_compiler.tcc: Add line break in empty while statement. * include/bits/regex_executor.tcc: Avoid unused parameter warning. 2021-09-28 Jonathan Wakely * include/bits/regex.h (basic_regex, swap): Add noexcept to non-throwing functions. * include/bits/regex_automaton.h (_State_base, _State) (_NFA_base): Likewise. * include/bits/regex_compiler.h (_Compiler): Likewise. * include/bits/regex_error.h (regex_error::code()): Likewise. * include/bits/regex_scanner.h (_Scanner): Likewise. 2021-09-28 Jonathan Wakely * include/bits/atomic_wait.h (_GLIBCXX_HAVE_PLATFORM_WAIT): Define before first attempt to check it. 2021-09-28 Jonathan Wakely * testsuite/23_containers/priority_queue/requirements/explicit_instantiation/1.cc: Do not check non-default constructible sequences when _GLIBCXX_CONCEPT_CHECKS is defined. * testsuite/23_containers/priority_queue/requirements/explicit_instantiation/1_c++98.cc: Likewise. * testsuite/23_containers/queue/requirements/explicit_instantiation/1.cc: Likewise. * testsuite/23_containers/queue/requirements/explicit_instantiation/1_c++98.cc: Likewise. * testsuite/23_containers/stack/requirements/explicit_instantiation/1.cc: Likewise. * testsuite/23_containers/stack/requirements/explicit_instantiation/1_c++98.cc: Likewise. 2021-09-28 Jonathan Wakely * testsuite/23_containers/deque/requirements/explicit_instantiation/3.cc: Do not test implicit allocator rebinding when _GLIBCXX_CONCEPT_CHECKS is defined. * testsuite/23_containers/forward_list/requirements/explicit_instantiation/3.cc: Likewise. * testsuite/23_containers/list/requirements/explicit_instantiation/3.cc: Likewise. * testsuite/23_containers/list/requirements/explicit_instantiation/5.cc: Likewise. * testsuite/23_containers/map/requirements/explicit_instantiation/3.cc: Likewise. * testsuite/23_containers/map/requirements/explicit_instantiation/5.cc: Likewise. * testsuite/23_containers/multimap/requirements/explicit_instantiation/3.cc: Likewise. * testsuite/23_containers/multimap/requirements/explicit_instantiation/5.cc: Likewise. * testsuite/23_containers/multiset/requirements/explicit_instantiation/3.cc: Likewise. * testsuite/23_containers/multiset/requirements/explicit_instantiation/5.cc: Likewise. * testsuite/23_containers/set/requirements/explicit_instantiation/3.cc: Likewise. * testsuite/23_containers/set/requirements/explicit_instantiation/5.cc: Likewise. * testsuite/23_containers/unordered_map/requirements/explicit_instantiation/3.cc: Likewise. * testsuite/23_containers/unordered_multimap/requirements/explicit_instantiation/3.cc: Likewise. * testsuite/23_containers/unordered_multiset/requirements/explicit_instantiation/3.cc: Likewise. * testsuite/23_containers/unordered_set/requirements/explicit_instantiation/3.cc: Likewise. * testsuite/23_containers/vector/ext_pointer/explicit_instantiation/3.cc: Likewise. * testsuite/23_containers/vector/requirements/explicit_instantiation/3.cc: Likewise. 2021-09-28 Jonathan Wakely * include/bits/boost_concept_check.h (_ForwardIteratorConcept) (_BidirectionalIteratorConcept, _RandomAccessIteratorConcept): Check result types of iterator operations. (_Mutable_ForwardIteratorConcept): Check that iterator's reference type is a reference to its value type. (_Mutable_BidirectionalIteratorConcept): Do not require the value type to be assignable. (_Mutable_RandomAccessIteratorConcept): Likewise. * testsuite/24_iterators/operations/prev_neg.cc: Adjust dg-error line number. 2021-09-28 Jonathan Wakely * testsuite/25_algorithms/copy/34595.cc: Add missing operation for type used as an iterator. * testsuite/25_algorithms/unique_copy/check_type.cc: Likewise. 2021-09-28 Jonathan Wakely * testsuite/20_util/is_nothrow_swappable/value.h: Use custom comparison function for priority_queue of type with no relational operators. * testsuite/20_util/is_swappable/value.h: Likewise. * testsuite/24_iterators/output/concept.cc: Add operator< to type used in set. 2021-09-28 Jonathan Wakely * include/bits/boost_concept_check.h (_OutputIteratorConcept): Use a function to preserve value category of the type. * include/bits/stl_algobase.h (copy, move, fill_n): Use a reference as the second argument for _OutputIteratorConcept. (copy_backward, move_backward): Use _OutputIteratorConcept instead of _ConvertibleConcept. 2021-09-28 Jonathan Wakely * include/bits/stl_iterator.h (pointer_traits): Define partial specialization for __normal_iterator. * testsuite/24_iterators/normal_iterator/to_address.cc: New test. 2021-09-28 Jonathan Wakely * include/bits/move.h (forward(remove_reference_t&&)): Improve text of static_assert. * testsuite/20_util/forward/c_neg.cc: Adjust dg-error. * testsuite/20_util/forward/f_neg.cc: Likewise. 2021-09-28 Jonathan Wakely PR libstdc++/102499 * include/bits/fs_path.h (path::begin, path::end): Add noexcept to declarations, to match definitions. 2021-09-24 Jonathan Wakely * include/bits/range_access.h (cbegin, cend): Remove redundant 'inline' specifier. 2021-09-23 Jonathan Wakely * testsuite/20_util/specialized_algorithms/memory_management_tools/destroy_neg.cc: Remove dg-error lines for C++20-only errors. 2021-09-23 Jonathan Wakely * testsuite/19_diagnostics/headers/system_error/93151.cc: Disable PCH. 2021-09-23 Jonathan Wakely * src/c++11/system_error.cc (system_error_category) [_WIN32]: Map Windows error codes to generic POSIX error numbers. Use FormatMessage instead of strerror. * testsuite/19_diagnostics/error_category/system_category.cc: Adjust for new behaviour on Windows. 2021-09-23 Jonathan Wakely * src/c++11/system_error.cc (generic_error_category): Define class and virtual functions as 'final'. (generic_error_category::equivalent(int, const error_condition&)): Override. (system_error_category): Define class and virtual functions as 'final'. (system_error_category::equivalent(int, const error_condition&)): Override. (generic_category_instance, system_category_instance): Use constinit union to make the objects immortal. 2021-09-23 Jonathan Wakely PR libstdc++/102425 * src/c++11/system_error.cc (system_error_category::default_error_condition): Add 0 to switch. * testsuite/19_diagnostics/error_category/102425.cc: New test. 2021-09-17 Jonathan Wakely * include/bits/fs_path.h (path::iterator): Add noexcept to all member functions and friend functions. (distance): Add noexcept. (advance): Add noexcept and inline. * include/experimental/bits/fs_path.h (path::iterator): Add noexcept to all member functions. 2021-09-17 Jonathan Wakely PR libstdc++/102270 * include/std/tuple (_Tuple_impl): Add constexpr to constructor missed in previous patch. * testsuite/20_util/tuple/cons/102270.C: Moved to... * testsuite/20_util/tuple/cons/102270.cc: ...here. * testsuite/util/testsuite_allocator.h (SimpleAllocator): Add constexpr to constructor so it can be used for C++20 tests. 2021-09-17 Jonathan Wakely * testsuite/26_numerics/valarray/dr630-3.C: Moved to... * testsuite/26_numerics/valarray/dr630-3.cc: ...here. * testsuite/27_io/basic_iostream/cons/16251.C: Moved to... * testsuite/27_io/basic_iostream/cons/16251.cc: ...here. 2021-09-16 Jonathan Wakely * src/Makefile.am (stamp-debug): Add all Makefiles as prerequisites. * src/Makefile.in: Regenerate. 2021-09-16 Jonathan Wakely * testsuite/ext/pb_ds/regression/tree_map_rand.cc: Increase timeout factor to 3. * testsuite/ext/pb_ds/regression/tree_set_rand.cc: Likewise. 2021-09-16 Jonathan Wakely * doc/xml/manual/using.xml: Generalize to apply to more than just -std=c++11. * doc/html/manual/using_macros.html: Regenerate. 2021-09-16 Jonathan Wakely * include/std/optional (nullptr_t): Make constructor noexcept. 2021-09-16 Jonathan Wakely * include/bits/fs_path.h (advance): Remove non-deducible template parameter. 2021-09-16 Jonathan Wakely PR libstdc++/102270 * include/std/tuple (_Head_base, _Tuple_impl): Add _GLIBCXX20_CONSTEXPR to allocator-extended constructors. (tuple<>::swap(tuple&)): Add _GLIBCXX20_CONSTEXPR. * testsuite/20_util/tuple/cons/102270.C: New test. 2021-09-16 Jonathan Wakely PR libstdc++/102280 * include/std/span (span(Range&&)): Add constraint to deduction guide. 2021-09-16 Jonathan Wakely * src/c++98/Makefile.am: Use CXXCOMPILE not LTCXXCOMPILE. * src/c++98/Makefile.in: Regenerate. 2021-09-16 Jonathan Wakely * include/bits/basic_string.h [_GLIBCXX_USE_CXX11_ABI] (to_string): Add noexcept if the type width is 32 bits or less. 2021-09-16 Jonathan Wakely * include/bits/unique_ptr.h (__uniq_ptr_impl::_M_ptr) (__uniq_ptr_impl::_M_deleter): Add noexcept. 2021-09-16 Thomas Rodgers PR libstdc++/101761 * testsuite/29_atomics/atomic_ref/wait_notify.cc (test): Use va and vb as arguments to wait/notify, remove unused bb local. 2021-09-15 Hugo Beauzée-Luyssen * crossconfig.m4: Check for TLS support on mingw. * configure: Regenerate. 2021-09-13 Jason Merrill * include/std/version: Define __cpp_lib_hardware_interference_size. * libsupc++/new: Define hardware interference size variables. 2021-09-10 Jonathan Wakely * testsuite/experimental/net/internet/resolver/ops/lookup.cc: Fix invalid hostname to only match the .invalid TLD. 2021-09-02 Jonathan Wakely * include/bits/atomic_base.h (__atomic_base::compare_exchange_weak): Add new functions. * include/std/atomic (atomic::compare_exchange_weak): Use it. 2021-09-02 Jonathan Wakely * include/std/atomic: Tweak whitespace. 2021-09-02 Jonathan Wakely PR c++/102177 * include/bits/atomic_base.h (__is_valid_cmpexch_failure_order): New function to check if a memory order is valid for the failure case of compare exchange operations. (__atomic_base::compare_exchange_weak): Simplify assertions by using __is_valid_cmpexch_failure_order. (__atomic_base::compare_exchange_strong): Likewise. (__atomic_base::compare_exchange_weak): Likewise. (__atomic_base::compare_exchange_strong): Likewise. (__atomic_impl::compare_exchange_weak): Add assertion. (__atomic_impl::compare_exchange_strong): Likewise. * include/std/atomic (atomic::compare_exchange_weak): Likewise. (atomic::compare_exchange_strong): Likewise. 2021-09-02 Jonathan Wakely * include/std/functional (invoke_r): Define. * include/std/version (__cpp_lib_invoke_r): Define. * testsuite/20_util/function_objects/invoke/version.cc: Check for __cpp_lib_invoke_r as well as __cpp_lib_invoke. * testsuite/20_util/function_objects/invoke/4.cc: New test. 2021-08-31 Jonathan Wakely PR libstdc++/98421 * include/std/span (span(Iter, size_type), span(Iter, Iter)): Add valid range checks. * testsuite/23_containers/span/cons_1_assert_neg.cc: New test. * testsuite/23_containers/span/cons_2_assert_neg.cc: New test. 2021-08-31 Jonathan Wakely * configure.ac: Fix checks for F_GETFL, F_SETFL and O_NONBLOCK. * configure: Regenerate. 2021-08-31 Jonathan Wakely * src/c++11/system_error.cc (error_category::~error_category()): Remove noexcept-specifier. (system_error::~system_error()): Likewise. * testsuite/19_diagnostics/error_category/noexcept.cc: New test. * testsuite/19_diagnostics/system_error/noexcept.cc: New test. 2021-08-31 Jonathan Wakely PR libstdc++/102074 * include/bits/atomic_timed_wait.h (__timed_waiter_pool) [!_GLIBCXX_HAVE_PLATFORM_TIMED_WAIT]: Add missing return. 2021-08-31 Jonathan Wakely * include/experimental/internet (__make_resolver_error_code): Handle EAI_SYSTEM errors. (basic_resolver_results): Use __make_resolver_error_code. Use Glibc NI_MAXHOST and NI_MAXSERV values for buffer sizes. 2021-08-31 Jonathan Wakely * testsuite/experimental/net/internet/resolver/ops/lookup.cc: Try other service if "http" fails. 2021-08-31 Jonathan Wakely * testsuite/17_intro/names.cc: Undefine some more names used by Solaris system headers. 2021-08-30 Jason Merrill PR c++/96286 * testsuite/30_threads/promise/requirements/lwg3466.cc: Remove dg-prune-outputs. 2021-08-28 Jonathan Wakely * include/bits/alloc_traits.h (allocator_traits): Add explicit specialization for allocator. Improve doxygen comments. * include/bits/allocator.h (allocator): Restore for the versioned namespace. (allocator::construct, allocator::destroy): Remove. * include/ext/extptr_allocator.h (_Extptr_allocator): Add default constructor and converting constructor. 2021-08-28 Jonathan Wakely * include/bits/stl_uninitialized.h: Fix typo in comment. 2021-08-28 Jonathan Wakely PR libstdc++/99876 * src/c++17/fs_ops.cc (fs::absolute): Call non-throwing form, to avoid unnecessary current_path() call. 2021-08-28 Jonathan Wakely * include/bits/std_function.h (function::function(F&&)): Give name to defaulted template parameter, to improve diagnostics. Use markdown for more doxygen comments. 2021-08-26 Jonathan Wakely * include/bits/std_function.h (function): Adjust doxygen comments. * include/bits/unique_ptr.h (make_unique_for_overwrite): Change parameter name to match doxygen comment. 2021-08-26 Jonathan Wakely * include/bits/std_function.h (_function_base::_Base_manager): Replace _M_init_functor with a function template using a forwarding reference, and a pair of _M_create function templates. Reuse _M_create for the clone operation. (function::_Decay_t): New alias template. (function::_Callable): Simplify by using _Decay. (function::function(F)): Change parameter to forwarding reference, as per LWG 2447. Add noexcept-specifier. Simplify constraints. (function::operator=(F&&)): Add noexcept-specifier. * testsuite/20_util/function/cons/lwg2774.cc: New test. * testsuite/20_util/function/cons/noexcept.cc: New test. 2021-08-26 Jonathan Wakely * include/bits/std_function.h (function::function(F)): Add static assertions to check constructibility requirements. 2021-08-26 Jonathan Wakely PR libstdc++/100285 * configure.ac: Check for O_NONBLOCK. * configure: Regenerate. * include/experimental/internet: Include for Windows. Use preprocessor conditions around more constants. * include/experimental/socket: Use preprocessor conditions around more constants. * testsuite/experimental/net/internet/resolver/base.cc: Only use constants when the corresponding C macro is defined. * testsuite/experimental/net/socket/basic_socket.cc: Likewise. * testsuite/experimental/net/socket/socket_base.cc: Likewise. Make preprocessor checks more fine-grained. 2021-08-25 Jonathan Wakely * testsuite/17_intro/names.cc: Check 'sz'. 2021-08-25 Jonathan Wakely * testsuite/17_intro/names.cc: Adjust for Windows. 2021-08-25 Jonathan Wakely * include/std/valarray: Uglify 'func' parameters. * testsuite/17_intro/names.cc: Add 'func' to checks. 2021-08-25 Jonathan Wakely PR libstdc++/102064 * include/bits/stl_uninitialized.h (_GLIBCXX_USE_ASSIGN_FOR_INIT): Define macro to check conditions for optimizing trivial cases. (__check_constructible): New function to do static assert. (uninitialized_copy, uninitialized_fill, uninitialized_fill_n): Use new macro. * testsuite/20_util/specialized_algorithms/uninitialized_copy/1.cc: Adjust dg-error pattern. * testsuite/23_containers/vector/cons/89164.cc: Likewise. Add C++17-specific checks from 89164_c++17.cc. * testsuite/23_containers/vector/cons/89164_c++17.cc: Removed. * testsuite/20_util/specialized_algorithms/uninitialized_copy/102064.cc: New test. * testsuite/20_util/specialized_algorithms/uninitialized_copy_n/102064.cc: New test. * testsuite/20_util/specialized_algorithms/uninitialized_fill/102064.cc: New test. * testsuite/20_util/specialized_algorithms/uninitialized_fill_n/102064.cc: New test. 2021-08-25 Jonathan Wakely PR libstdc++/102048 * include/ext/rope (rope::erase(size_type)): Remove broken function. 2021-08-24 Jonathan Wakely * doc/xml/manual/status_cxx2020.xml: Update table. * doc/html/manual/status.html: Regenerate. 2021-08-24 Jonathan Wakely * include/std/type_traits (is_layout_compatible): Define. (is_corresponding_member): Define. * include/std/version (__cpp_lib_is_layout_compatible): Define. * testsuite/20_util/is_layout_compatible/is_corresponding_member.cc: New test. * testsuite/20_util/is_layout_compatible/value.cc: New test. * testsuite/20_util/is_layout_compatible/version.cc: New test. * testsuite/20_util/is_pointer_interconvertible/with_class.cc: New test. * testsuite/23_containers/span/layout_compat.cc: Do not use real std::is_layout_compatible trait if available. 2021-08-24 Jonathan Wakely * src/c++11/cxx11-shim_facets.cc: Fix mismatched class-key in explicit instantiation definitions. 2021-08-23 Jonathan Wakely * include/std/ranges (basic_istream_view): Add default template argument. * testsuite/std/ranges/istream_view.cc: Check it. 2021-08-23 Jonathan Wakely * libsupc++/dyncast.cc (__dynamic_cast): Add __builtin_expect to precondition check. 2021-08-23 Jonathan Wakely PR libstdc++/90787 * testsuite/util/testsuite_fs.h (permissions_are_testable): Define as inline. 2021-08-20 Jonathan Wakely PR libstdc++/90787 * testsuite/27_io/filesystem/iterators/directory_iterator.cc: Use new __gnu_test::permissions_are_testable() function. * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc: Likewise. * testsuite/27_io/filesystem/operations/exists.cc: Likewise. * testsuite/27_io/filesystem/operations/is_empty.cc: Likewise. * testsuite/27_io/filesystem/operations/remove.cc: Likewise. * testsuite/27_io/filesystem/operations/remove_all.cc: Likewise. * testsuite/27_io/filesystem/operations/status.cc: Likewise. * testsuite/27_io/filesystem/operations/symlink_status.cc: Likewise. * testsuite/27_io/filesystem/operations/temp_directory_path.cc: Likewise. * testsuite/experimental/filesystem/iterators/directory_iterator.cc: Likewise. * testsuite/experimental/filesystem/iterators/recursive_directory_iterator.cc: Likewise. * testsuite/experimental/filesystem/operations/exists.cc: Likewise. * testsuite/experimental/filesystem/operations/is_empty.cc: Likewise. * testsuite/experimental/filesystem/operations/remove.cc: Likewise. * testsuite/experimental/filesystem/operations/remove_all.cc: Likewise. * testsuite/experimental/filesystem/operations/temp_directory_path.cc: Likewise. * testsuite/util/testsuite_fs.h (__gnu_test::permissions_are_testable): New function to guess whether testing permissions will work. 2021-08-19 Jonathan Wakely * doc/xml/manual/status_cxx2020.xml: Move row earlier in table. * doc/html/manual/status.html: Regenerate. 2021-08-19 Jonathan Wakely * doc/doxygen/user.cfg.in: Update to Doxygen 1.9.2 2021-08-19 Jonathan Wakely PR libstdc++/101965 * include/std/charconv (__to_chars_i): Remove redundant check. 2021-08-19 Jonathan Wakely PR libstdc++/101960 * include/std/tuple (_Tuple_impl(_Tuple_impl&&)): Use base class' move constructor. Define as defaulted for versioned namespace. * testsuite/20_util/tuple/cons/101960.cc: New test. 2021-08-19 Jonathan Wakely PR libstdc++/100139 * doc/xml/manual/status_cxx2020.xml: Add P1739R4 to status table. * doc/html/manual/status.html: Regenerate. 2021-08-19 Jonathan Wakely * include/bits/shared_ptr.h: Add @since and @headerfile tags. * include/bits/unique_ptr.h: Add @headerfile tags. 2021-08-19 Jonathan Wakely * src/filesystem/ops-common.h (filesystem::file_time): Improve overflow check by using system_clock::duration::max(). 2021-08-19 Jonathan Wakely * include/bits/stl_tree.h: Tweak whitespace. 2021-08-18 Jonathan Wakely * include/bits/unique_ptr.h (default_delete): Add @since tag. (unique_ptr, unique_ptr): Likewise. Improve @brief. (make_unique, make_unique_for_overwrite): Likewise. Add @tparam, @param, and @returns. (_MakeUniq): Move to __detail namespace. Add alias template helpers. 2021-08-18 Jonathan Wakely * include/bits/stl_function.h: Improve doxygen comments. 2021-08-18 Jonathan Wakely * doc/doxygen/user.cfg.in (PREDEFINED): Enable doxygen processing for C++20 components and components that depend on compiler features. * include/bits/stl_algo.h (random_shuffle): Use @deprecated. * include/std/type_traits: Improve doxygen comments for C++20 traits. 2021-08-18 Jonathan Wakely * include/ext/type_traits.h (__promote_2, __promote_3) (__promote_4): Redfine as alias templates using __promoted_t. * include/std/complex (__promote_2): Remove partial specializations for std::complex. 2021-08-18 Jonathan Wakely * include/bits/stl_algo.h (min(initializer_list)) (min(initializer_list, Compare)): Call __min_element directly to avoid redundant debug checks for valid ranges. (max(initializer_list), max(initializer_list, Compare)): Likewise, for __max_element. (minmax(initializer_list), minmax(initializer_list, Compare)): Likewise, for __minmax_element. 2021-08-18 Jonathan Wakely * include/debug/deque (deque(size_type, const T&, const A&)): Prevent class template argument deduction and replace with a deduction guide. * include/debug/forward_list (forward_list(size_type, const T&, const A&)): Likewise. * include/debug/list (list(size_type, const T&, const A&)): Likewise. * include/debug/vector (vector(size_type, const T&, const A&)): Likewise. 2021-08-18 Jonathan Wakely * python/libstdcxx/v6/printers.py (StdBitReferencePrinter): Use 'std::vector::reference' as type name, not _Bit_reference. (build_libstdcxx_dictionary): Register printers for vector types in debug mode too. * testsuite/libstdc++-prettyprinters/simple.cc: Adjust expected output for invalid _Bit_reference. Use vector::reference instead of _Bit_reference. * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise. 2021-08-17 Thomas Schwinge * testsuite/lib/libstdc++.exp: Avoid illegal argument to verbose, continued. 2021-08-17 Luc Michel Marc Poulhies * testsuite/lib/gdb-test.exp (gdb_version_check) (gdb_version_check_xmethods): Only check the GDB version for local native targets. 2021-08-17 Antony Polukhin Jonathan Wakely * include/bits/random.tcc (seed_seq::seed_seq): Reserve capacity if distance is O(1). * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error line number. 2021-08-17 Jonathan Wakely * testsuite/26_numerics/random/seed_seq/cons/range.cc: Check construction from input iterators. 2021-08-17 Jonathan Wakely * python/libstdcxx/v6/printers.py (StdErrorCatPrinter): Remove. 2021-08-17 Jonathan Wakely PR libstdc++/101923 * include/bits/std_function.h (function(function&&)): Check for non-empty parameter before doing any work. 2021-08-17 Jonathan Wakely * include/bits/cow_string.h (basic_string::contains): Do not define for -std=gnu++20. 2021-08-17 Jonathan Wakely * include/bits/ranges_util.h (__not_same_as): Rename to __different_from. * include/std/ranges (__not_same_as): Likewise. 2021-08-17 Jonathan Wakely * include/std/utility (exchange): Add noexcept-specifier. * testsuite/20_util/exchange/noexcept.cc: New test. 2021-08-17 Jonathan Wakely * python/libstdcxx/v6/printers.py (StdErrorCodePrinter): Define. (build_libstdcxx_dictionary): Register printer for std::error_code and std::error_condition. * testsuite/libstdc++-prettyprinters/cxx11.cc: Test it. 2021-08-16 Jonathan Wakely PR libstdc++/101937 * src/c++11/debug.cc (PrintContext::_M_indent): Replace with a static data member. (print_word): Use qualified-id to access it. 2021-08-16 Jonathan Wakely * python/Makefile.am [GLIBCXX_BUILD_DEBUG] (install-data-local): Install another copy of the GDB hook. * python/Makefile.in: Regenerate. 2021-08-12 Jonathan Wakely PR libstdc++/101870 * include/c_global/cmath (hypot): Use __promoted_t. (lerp): Add new overload accepting any arithmetic types. * include/ext/type_traits.h (__promoted_t): New alias template. * testsuite/26_numerics/lerp.cc: Moved to... * testsuite/26_numerics/lerp/1.cc: ...here. * testsuite/26_numerics/lerp/constexpr.cc: New test. * testsuite/26_numerics/lerp/version.cc: New test. 2021-08-12 Jonathan Wakely * testsuite/26_numerics/lerp.cc: Add header name to #error. * testsuite/26_numerics/midpoint/integral.cc: Likewise. * testsuite/26_numerics/midpoint/version.cc: New test. 2021-08-12 Jonathan Wakely * include/experimental/random (experimental::randint): Add nodiscard attribute. 2021-08-12 Jonathan Wakely * src/c++98/locale_init.cc: Require C++11. * src/c++98/localename.cc: Likewise. * src/c++98/misc-inst.cc: Require C++98. 2021-08-11 Jonathan Wakely PR libstdc++/101866 * testsuite/experimental/random/randint.cc: Loop and retry if reseed() produces the same sequence. 2021-08-11 Jonathan Wakely * include/std/type_traits (__cpp_lib_is_pointer_interconvertible) (is_pointer_interconvertible_base_of_v) (is_pointer_interconvertible_base_of): Define for C++20. * include/std/version (__cpp_lib_is_pointer_interconvertible): Define. * testsuite/23_containers/span/layout_compat.cc: Use correct feature test macro for std::is_layout_compatible_v. * testsuite/20_util/is_pointer_interconvertible/value.cc: New test. * testsuite/20_util/is_pointer_interconvertible/version.cc: New test. 2021-08-09 Jonathan Wakely * include/bits/regex.h (basic_regex::transform_primary): Use _GLIBCXX_STD_C::vector for local variable. * include/bits/regex.tcc (__regex_algo_impl): Use reference to _GLIBCXX_STD_C::vector base class of match_results. * include/bits/regex_automaton.tcc (_StateSeq:_M_clone): Use _GLIBCXX_STD_C::map and _GLIBCXX_STD_C::deque for local variables. * include/bits/regex_compiler.h (_BracketMatcher): Use _GLIBCXX_STD_C::vector for data members. * include/bits/regex_executor.h (_Executor): Likewise. * include/std/regex [_GLIBCXX_DEBUG]: Include . 2021-08-09 François Dumont * include/debug/safe_container.h (_Safe_container(_Safe_container&&, const _Alloc&, std::true_type)): New. (_Safe_container(_Safe_container&&, const _Alloc&, std::false_type)): New. (_Safe_container(_Safe_container&&, const _Alloc&)): Use latters. 2021-08-09 Jonathan Wakely * testsuite/23_containers/unordered_map/cons/default.cc: Add equality comparison operators to allocator. * testsuite/23_containers/unordered_set/cons/default.cc: Likewise. 2021-08-08 François Dumont * testsuite/25_algorithms/copy/debug/constexpr_neg.cc: Replace 'failed_assertion' dg-prune-output reason with 'builtin_unreachable'. * testsuite/25_algorithms/copy_backward/debug/constexpr_neg.cc: Likewise. * testsuite/25_algorithms/equal/debug/constexpr_neg.cc: Likewise. * testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_neg.cc: Likewise. * testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_pred_neg.cc: Likewise. * testsuite/25_algorithms/lower_bound/debug/constexpr_valid_range_neg.cc: Likewise. * testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_neg.cc: Likewise. * testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_pred_neg.cc: Likewise. * testsuite/25_algorithms/upper_bound/debug/constexpr_valid_range_neg.cc: Likewise. 2021-08-08 Hans-Peter Nilsson * testsuite/std/ranges/iota/max_size_type.cc: Set dg-timeout-factor to 4. 2021-08-06 Jonathan Wakely * libsupc++/compare (compare_three_way, strong_order) (weak_order, partial_order, compare_strong_order_fallback) (compare_weak_order_fallback, compare_partial_order_fallback): Move nodiscard attributes to correct location. 2021-08-05 Jonathan Wakely PR libstdc++/101782 * include/bits/ranges_base.h (ranges::begin, ranges::end) (ranges::rbegin, ranges::rend, ranges::size, ranges::ssize) (ranges::empty, ranges::data): Move attribute after the declarator-id instead of at the end of the declarator. * include/bits/stl_iterator.h (__gnu_cxx::__normal_iterator): Move attributes back to the start of the function declarator, but move the requires-clause to the end. (common_iterator): Move attribute after the declarator-id. * include/bits/stl_queue.h (queue): Remove ill-formed attributes from friend declaration that are not definitions. * include/std/ranges (views::all, views::filter) (views::transform, views::take, views::take_while, views::drop) (views::drop_while, views::join, views::lazy_split) (views::split, views::counted, views::common, views::reverse) (views::elements): Move attributes after the declarator-id. 2021-08-05 Jonathan Wakely * libsupc++/compare (partial_ordering, weak_ordering) (strong_ordering, is_eq, is_neq, is_lt, is_lteq, is_gt, is_gteq) (compare_three_way, strong_order, weak_order, partial_order) (compare_strong_order_fallback, compare_weak_order_fallback) (compare_partial_order_fallback, __detail::__synth3way): Add nodiscard attribute. * testsuite/18_support/comparisons/categories/zero_neg.cc: Add -Wno-unused-result to options. 2021-08-05 Jonathan Wakely PR libstdc++/101782 * include/bits/ranges_base.h (ranges::begin, ranges::end) (ranges::rbegin, ranges::rend, ranges::size, ranges::ssize) (ranges::empty, ranges::data): Move attribute to the end of the declarator. * include/bits/stl_iterator.h (__gnu_cxx::__normal_iterator) (common_iterator): Likewise for non-member operator functions. * include/std/ranges (views::all, views::filter) (views::transform, views::take, views::take_while, views::drop) (views::drop_while, views::join, views::lazy_split) (views::split, views::counted, views::common, views::reverse) (views::elements): Likewise. * testsuite/std/ranges/access/101782.cc: New test. 2021-08-04 Jonathan Wakely * include/bits/forward_list.h: Add [[nodiscard]] to functions with no side-effects. * include/bits/stl_bvector.h: Likewise. * include/bits/stl_deque.h: Likewise. * include/bits/stl_list.h: Likewise. * include/bits/stl_queue.h: Likewise. * include/bits/stl_stack.h: Likewise. * include/bits/stl_vector.h: Likewise. * include/debug/deque: Likewise. * include/debug/forward_list: Likewise. * include/debug/list: Likewise. * include/debug/safe_iterator.h: Likewise. * include/debug/vector: Likewise. * include/std/array: Likewise. * testsuite/23_containers/array/creation/3_neg.cc: Use -Wno-unused-result. * testsuite/23_containers/array/debug/back1_neg.cc: Cast result to void. * testsuite/23_containers/array/debug/back2_neg.cc: Likewise. * testsuite/23_containers/array/debug/front1_neg.cc: Likewise. * testsuite/23_containers/array/debug/front2_neg.cc: Likewise. * testsuite/23_containers/array/debug/square_brackets_operator1_neg.cc: Likewise. * testsuite/23_containers/array/debug/square_brackets_operator2_neg.cc: Likewise. * testsuite/23_containers/array/tuple_interface/get_neg.cc: Adjust dg-error line numbers. * testsuite/23_containers/deque/cons/clear_allocator.cc: Cast result to void. * testsuite/23_containers/deque/debug/invalidation/4.cc: Likewise. * testsuite/23_containers/deque/types/1.cc: Use -Wno-unused-result. * testsuite/23_containers/list/types/1.cc: Cast result to void. * testsuite/23_containers/priority_queue/members/7161.cc: Likewise. * testsuite/23_containers/queue/members/7157.cc: Likewise. * testsuite/23_containers/vector/59829.cc: Likewise. * testsuite/23_containers/vector/ext_pointer/types/1.cc: Likewise. * testsuite/23_containers/vector/ext_pointer/types/2.cc: Likewise. * testsuite/23_containers/vector/types/1.cc: Use -Wno-unused-result. 2021-08-04 Jonathan Wakely * include/bits/iterator_concepts.h (iter_move): Add [[nodiscard]]. * include/bits/range_access.h (begin, end, cbegin, cend) (rbegin, rend, crbegin, crend, size, data, ssize): Likewise. * include/bits/ranges_base.h (ranges::begin, ranges::end) (ranges::cbegin, ranges::cend, ranges::rbegin, ranges::rend) (ranges::crbegin, ranges::crend, ranges::size, ranges::ssize) (ranges::empty, ranges::data, ranges::cdata): Likewise. * include/bits/stl_iterator.h (reverse_iterator, __normal_iterator) (back_insert_iterator, front_insert_iterator, insert_iterator) (move_iterator, move_sentinel, common_iterator) (counted_iterator): Likewise. * include/bits/stl_iterator_base_funcs.h (distance, next, prev): Likewise. * include/bits/stream_iterator.h (istream_iterator) (ostream_iterartor): Likewise. * include/bits/streambuf_iterator.h (istreambuf_iterator) (ostreambuf_iterator): Likewise. * include/std/ranges (views::single, views::iota, views::all) (views::filter, views::transform, views::take, views::take_while) (views::drop, views::drop_while, views::join, views::lazy_split) (views::split, views::counted, views::common, views::reverse) (views::elements): Likewise. * testsuite/20_util/rel_ops.cc: Use -Wno-unused-result. * testsuite/24_iterators/move_iterator/greedy_ops.cc: Likewise. * testsuite/24_iterators/normal_iterator/greedy_ops.cc: Likewise. * testsuite/24_iterators/reverse_iterator/2.cc: Likewise. * testsuite/24_iterators/reverse_iterator/greedy_ops.cc: Likewise. * testsuite/21_strings/basic_string/range_access/char/1.cc: Cast result to void. * testsuite/21_strings/basic_string/range_access/wchar_t/1.cc: Likewise. * testsuite/21_strings/basic_string_view/range_access/char/1.cc: Likewise. * testsuite/21_strings/basic_string_view/range_access/wchar_t/1.cc: Likewise. * testsuite/23_containers/array/range_access.cc: Likewise. * testsuite/23_containers/deque/range_access.cc: Likewise. * testsuite/23_containers/forward_list/range_access.cc: Likewise. * testsuite/23_containers/list/range_access.cc: Likewise. * testsuite/23_containers/map/range_access.cc: Likewise. * testsuite/23_containers/multimap/range_access.cc: Likewise. * testsuite/23_containers/multiset/range_access.cc: Likewise. * testsuite/23_containers/set/range_access.cc: Likewise. * testsuite/23_containers/unordered_map/range_access.cc: Likewise. * testsuite/23_containers/unordered_multimap/range_access.cc: Likewise. * testsuite/23_containers/unordered_multiset/range_access.cc: Likewise. * testsuite/23_containers/unordered_set/range_access.cc: Likewise. * testsuite/23_containers/vector/range_access.cc: Likewise. * testsuite/24_iterators/customization_points/iter_move.cc: Likewise. * testsuite/24_iterators/istream_iterator/sentinel.cc: Likewise. * testsuite/24_iterators/istreambuf_iterator/sentinel.cc: Likewise. * testsuite/24_iterators/move_iterator/dr2061.cc: Likewise. * testsuite/24_iterators/operations/prev_neg.cc: Likewise. * testsuite/24_iterators/ostreambuf_iterator/2.cc: Likewise. * testsuite/24_iterators/range_access/range_access.cc: Likewise. * testsuite/24_iterators/range_operations/100768.cc: Likewise. * testsuite/26_numerics/valarray/range_access2.cc: Likewise. * testsuite/28_regex/range_access.cc: Likewise. * testsuite/experimental/string_view/range_access/char/1.cc: Likewise. * testsuite/experimental/string_view/range_access/wchar_t/1.cc: Likewise. * testsuite/ext/vstring/range_access.cc: Likewise. * testsuite/std/ranges/adaptors/take.cc: Likewise. * testsuite/std/ranges/p2259.cc: Likewise. 2021-08-03 Jonathan Wakely * include/bits/random.tcc (linear_congruential_engine): Do not define static constexpr members when they are implicitly inline. * include/std/ratio (ratio, __ratio_multiply, __ratio_divide) (__ratio_add, __ratio_subtract): Likewise. * include/std/type_traits (integral_constant): Likewise. * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error line number. 2021-08-03 Jonathan Wakely * testsuite/util/testsuite_common_types.h: Replace uses of tr1::unordered_map and tr1::unordered_set with their C++11 equivalents. * testsuite/29_atomics/atomic/cons/assign_neg.cc: Adjust dg-error line number. * testsuite/29_atomics/atomic/cons/copy_neg.cc: Likewise. * testsuite/29_atomics/atomic_integral/cons/assign_neg.cc: Likewise. * testsuite/29_atomics/atomic_integral/cons/copy_neg.cc: Likewise. * testsuite/29_atomics/atomic_integral/operators/bitwise_neg.cc: Likewise. * testsuite/29_atomics/atomic_integral/operators/decrement_neg.cc: Likewise. * testsuite/29_atomics/atomic_integral/operators/increment_neg.cc: Likewise. 2021-08-03 Jonathan Wakely * include/std/memory_resource (polymorphic_allocator::delete_object): Call destructor directly instead of using destroy. (allocator_traits>): Define partial specialization. 2021-08-03 Jonathan Wakely * testsuite/20_util/function_objects/binders/3113.cc: Remove trailing whitespace. * testsuite/20_util/shared_ptr/assign/auto_ptr.cc: Likewise. * testsuite/20_util/shared_ptr/assign/auto_ptr_neg.cc: Likewise. * testsuite/20_util/shared_ptr/assign/auto_ptr_rvalue.cc: Likewise. * testsuite/20_util/shared_ptr/creation/dr925.cc: Likewise. * testsuite/25_algorithms/headers/algorithm/synopsis.cc: Likewise. * testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/2.cc: Likewise. * testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/pod.cc: Likewise. 2021-08-03 Jonathan Wakely * doc/xml/manual/evolution.xml: Document deprecation. * doc/html/*: Regenerate. * include/bits/c++config (_GLIBCXX14_DEPRECATED): Define. (_GLIBCXX14_DEPRECATED_SUGGEST): Define. * include/bits/stl_algo.h (random_shuffle): Deprecate for C++14 and later. * testsuite/25_algorithms/headers/algorithm/synopsis.cc: Adjust for C++11 and C++14 changes to std::random_shuffle and std::shuffle. * testsuite/25_algorithms/random_shuffle/1.cc: Add options to use deprecated algorithms. * testsuite/25_algorithms/random_shuffle/59603.cc: Likewise. * testsuite/25_algorithms/random_shuffle/moveable.cc: Likewise. * testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/2.cc: Likewise. * testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/pod.cc: Likewise. 2021-08-03 Jonathan Wakely * testsuite/23_containers/forward_list/operations/3.cc: Use lambda instead of std::bind2nd. * testsuite/20_util/function_objects/binders/3113.cc: Add options for testing deprecated features. * testsuite/20_util/pair/cons/99957.cc: Likewise. * testsuite/20_util/shared_ptr/assign/auto_ptr.cc: Likewise. * testsuite/20_util/shared_ptr/assign/auto_ptr_neg.cc: Likewise. * testsuite/20_util/shared_ptr/assign/auto_ptr_rvalue.cc: Likewise. * testsuite/20_util/shared_ptr/cons/43820_neg.cc: Likewise. * testsuite/20_util/shared_ptr/cons/auto_ptr.cc: Likewise. * testsuite/20_util/shared_ptr/cons/auto_ptr_neg.cc: Likewise. * testsuite/20_util/shared_ptr/creation/dr925.cc: Likewise. * testsuite/20_util/unique_ptr/cons/auto_ptr.cc: Likewise. * testsuite/20_util/unique_ptr/cons/auto_ptr_neg.cc: Likewise. * testsuite/ext/pb_ds/example/priority_queue_erase_if.cc: Likewise. * testsuite/ext/pb_ds/example/priority_queue_split_join.cc: Likewise. * testsuite/lib/dg-options.exp (dg_add_options_using-deprecated): New proc. 2021-08-03 Jonathan Wakely * include/bits/regex_executor.h (_State_info): Replace unique_ptr with array of bool. * include/bits/regex_executor.tcc: Likewise. * include/bits/regex_scanner.tcc: Replace std::strchr with __builtin_strchr. * include/std/regex: Replace standard headers with smaller internal ones. * testsuite/28_regex/traits/char/lookup_classname.cc: Include for strlen. * testsuite/28_regex/traits/char/lookup_collatename.cc: Likewise. 2021-08-03 Jonathan Wakely * include/bits/locale_conv.h (__detail::_Scoped_ptr): Define new RAII class template. (wstring_convert, wbuffer_convert): Use __detail::_Scoped_ptr instead of unique_ptr. 2021-08-02 Patrick Palka PR libstdc++/101599 * include/bits/ranges_algo.h (__reverse_copy_fn::operator()): Add missing std::move in return statement. (__partition_copy_fn::operator()): Rename templtae parameter _O2 to _Out2. Uglify function parameters out_true and out_false. * include/bits/ranges_algobase.h (__copy_or_move): Add missing std::move to recursive call that unwraps a __normal_iterator output iterator. * testsuite/25_algorithms/copy/constrained.cc (test06): New test. * testsuite/25_algorithms/move/constrained.cc (test05): New test. 2021-08-02 Patrick Palka PR libstdc++/101589 * include/std/ranges (lazy_split_view::_InnerIter::base): Make the const& overload unconstrained and return a const reference as per LWG 3533. Make unconditionally noexcept. (elements_view::base): Revert accidental r12-569 change. (elements_view::_Iterator::base): Make the const& overload unconstrained and return a const reference as per LWG 3533. Make unconditionally noexcept. 2021-08-02 Patrick Palka PR libstdc++/101483 * include/std/ranges (join_view::_Iterator::_Iterator): Add missing std::move. 2021-08-02 Jonathan Wakely PR libstdc++/101709 * src/filesystem/ops-common.h (get_temp_directory_from_env): Add error_code parameter. * src/c++17/fs_ops.cc (fs::temp_directory_path): Pass error_code argument to get_temp_directory_from_env and check it. * src/filesystem/ops.cc (fs::temp_directory_path): Likewise. 2021-08-02 Jonathan Wakely * testsuite/20_util/tuple/comparison_operators/overloaded2.cc: Add dg-error for c++11_only target. 2021-07-30 Jonathan Wakely PR libstdc++/65018 * configure.ac: Check for secure_getenv. * config.h.in: Regenerate. * configure: Regenerate. * src/filesystem/ops-common.h (get_temp_directory_from_env): New helper function to obtain path from the environment. * src/c++17/fs_ops.cc (fs::temp_directory_path): Use new helper. * src/filesystem/ops.cc (fs::temp_directory_path): Likewise. * testsuite/27_io/filesystem/operations/temp_directory_path.cc: Print messages if test cannot be run. * testsuite/experimental/filesystem/operations/temp_directory_path.cc: Likewise. Fix incorrect condition. Use "TMP" to work with Windows as well as POSIX. 2021-07-29 Hans-Peter Nilsson * src/c++17/memory_resource.cc: Use __exchange instead of std::exchange. 2021-07-27 Jonathan Wakely * include/experimental/optional (__throw_bad_optional_access): Replace GNU attribute with C++11 attribute. (optional::value, optional::value_or): Use if statements instead of conditional expressions. * include/std/optional (__throw_bad_optional_access) (optional::value, optional::value_or): Likewise. 2021-07-27 Marek Polacek DR 1512 PR c++/99701 * testsuite/20_util/tuple/comparison_operators/overloaded.cc: Move a line... * testsuite/20_util/tuple/comparison_operators/overloaded2.cc: ...here. New test. 2021-07-27 Jonathan Wakely * include/bits/cow_string.h: Consistently use tab for indentation. 2021-07-27 Jonathan Wakely * include/Makefile.am: Add new header. * include/Makefile.in: Regenerate. * include/bits/basic_string.h [!_GLIBCXX_USE_CXX11_ABI] (basic_string): Move definition of Copy-on-Write string to new file. * include/bits/basic_string.tcc: Likewise. * include/bits/cow_string.h: New file. 2021-07-27 Jonathan Wakely * include/std/algorithm: Do not include . * include/std/functional: Likewise. * include/std/regex: Include instead of . * include/debug/map.h: Likewise. * include/debug/multimap.h: Likewise. * include/debug/multiset.h: Likewise. * include/debug/set.h: Likewise. * include/debug/vector: Likewise. * include/bits/fs_path.h: Likewise. * include/bits/unique_ptr.h: Do not include . * include/experimental/any: Likewise. * include/experimental/executor: Likewise. * include/experimental/memory: Likewise. * include/experimental/optional: Likewise. * include/experimental/socket: Use __exchange instead of std::exchange. * src/filesystem/ops-common.h: Likewise. * testsuite/20_util/default_delete/48631_neg.cc: Adjust expected errors to not use a hardcoded line number. * testsuite/20_util/default_delete/void_neg.cc: Likewise. * testsuite/20_util/specialized_algorithms/uninitialized_copy/constrained.cc: Include for std::as_const. * testsuite/20_util/specialized_algorithms/uninitialized_default_construct/constrained.cc: Likewise. * testsuite/20_util/specialized_algorithms/uninitialized_move/constrained.cc: Likewise. * testsuite/20_util/specialized_algorithms/uninitialized_value_construct/constrained.cc: Likewise. * testsuite/23_containers/vector/cons/destructible_debug_neg.cc: Adjust dg-error line number. 2021-07-27 Jonathan Wakely * include/Makefile.am: Add bits/utility.h header. * include/Makefile.in: Regenerate. * include/bits/utility.h: New file. * include/std/utility (tuple_size, tuple_element): Move to new header. * include/std/type_traits (__is_tuple_like_impl>): Move to . (_Index_tuple, _Build_index_tuple, integer_sequence): Likewise. (in_place_t, in_place_index_t, in_place_type_t): Likewise. * include/bits/ranges_util.h: Include new header instead of . * include/bits/stl_pair.h (tuple_size, tuple_element): Move partial specializations for std::pair here. (get): Move overloads for std::pair here. * include/std/any: Include new header instead of . * include/std/array: Likewise. * include/std/memory_resource: Likewise. * include/std/optional: Likewise. * include/std/variant: Likewise. * include/std/tuple: Likewise. (__is_tuple_like_impl>): Move here. (get) Declare overloads for std::array. * include/std/version (__cpp_lib_tuples_by_type): Change type to long. * testsuite/20_util/optional/84601.cc: Include . * testsuite/20_util/specialized_algorithms/uninitialized_fill/constrained.cc: Likewise. * testsuite/23_containers/array/tuple_interface/get_neg.cc: Adjust dg-error line numbers. * testsuite/std/ranges/access/cbegin.cc: Include . * testsuite/std/ranges/access/cend.cc: Likewise. * testsuite/std/ranges/access/end.cc: Likewise. * testsuite/std/ranges/single_view.cc: Likewise. 2021-07-23 Jonathan Wakely * include/std/future: Include instead of . 2021-07-23 Jonathan Wakely * include/bits/stl_relops.h: Update documentation comments. 2021-07-22 Jonathan Wakely PR libstdc++/101583 * include/bits/hashtable.h (_Hashtable): Replace mixin with _Enable_default_ctor. Construct it explicitly in all non-forwarding, non-defaulted constructors. * testsuite/23_containers/unordered_map/cons/default.cc: Check non-default constructors can be used. * testsuite/23_containers/unordered_set/cons/default.cc: Likewise. 2021-07-22 David Edelsohn * config/os/aix/os_defines.h (__LIBC_NO_CPP_MATH_OVERLOADS__): Define. 2021-07-22 Jonathan Wakely PR libstdc++/94295 * include/ext/new_allocator.h (_GLIBCXX_OPERATOR_NEW) (_GLIBCXX_OPERATOR_DELETE, _GLIBCXX_SIZED_DEALLOC): Define. (allocator::allocate, allocator::deallocate): Use new macros. 2021-07-22 Jonathan Wakely PR libstdc++/101571 * include/bits/ranges_uninitialized.h (_DestroyGuard): Change constructor parameter to reference and use addressof. * testsuite/util/testsuite_iterators.h: Define deleted operator& overloads for test iterators. 2021-07-22 Jonathan Wakely * include/bits/std_function.h (_Function_base): Add default member initializers and define constructor as defaulted. (function::_M_invoker): Add default member initializer. 2021-07-22 Jonathan Wakely PR libstdc++/100682 * doc/xml/manual/debug_mode.xml: Update documentation about debug capability of std::array. * doc/html/*: Regenerate. * include/debug/array: New file. 2021-07-21 Jonathan Wakely PR libstdc++/101542 * include/ext/rope (sequence_buffer): Add move constructor and move assignment operator. * testsuite/ext/rope/101542.cc: New test. 2021-07-20 Jonathan Wakely PR libstdc++/101510 * src/c++17/fs_ops.cc (fs::create_directories): Use status instead of symlink_status. * src/filesystem/ops.cc (fs::create_directories): Likewise. * testsuite/27_io/filesystem/operations/create_directories.cc: Check symlink to existing directory. * testsuite/27_io/filesystem/operations/create_directory.cc: Do not test with symlinks on Windows. * testsuite/experimental/filesystem/operations/create_directories.cc: Check symlink to existing directory. * testsuite/experimental/filesystem/operations/create_directory.cc: Do not test with symlinks on Windows. 2021-07-20 Jonathan Wakely PR libstdc++/100863 * include/bits/hashtable.h (_Hashtable): Conditionally delete default constructor by deriving from _Enable_special_members. * testsuite/23_containers/unordered_map/cons/default.cc: New test. * testsuite/23_containers/unordered_set/cons/default.cc: New test. 2021-07-20 Jonathan Wakely PR libstdc++/101510 * src/c++17/fs_ops.cc (create_dir): Adjust whitespace. * testsuite/27_io/filesystem/operations/create_directory.cc: Test creating directory with name of existing symlink to directory. * testsuite/experimental/filesystem/operations/create_directory.cc: Likewise. 2021-07-16 Jonathan Wakely * include/std/tuple (get): Add deleted overload for bad index. * testsuite/20_util/tuple/element_access/get_neg.cc: Adjust expected errors. 2021-07-16 Jonathan Wakely * include/bits/max_size_type.h (numeric_limits<__max_size_type>): Use __int_traits unconditionally. 2021-07-16 Jonathan Wakely * include/bits/random.h (_Shift::__value): Use constexpr. (_Select_uint_least_t::type): Use using-declaration. (_Mod): Likewise. * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error line number. 2021-07-16 Jonathan Wakely * include/bits/cpp_type_traits.h (__INT_N): Use __extension__ instead of diagnostic pragmas. * include/bits/functional_hash.h: Likewise. * include/bits/iterator_concepts.h (__is_signed_int128) (__is_unsigned_int128): Likewise. * include/bits/max_size_type.h (__max_size_type): Likewise. (numeric_limits<__max_size_type>): Likewise. * include/bits/std_abs.h (abs): Likewise. * include/bits/stl_algobase.h (__size_to_integer): Likewise. * include/bits/uniform_int_dist.h (uniform_int_distribution): Likewise. * include/ext/numeric_traits.h (_GLIBCXX_INT_N_TRAITS): Likewise. * include/std/type_traits (__is_integral_helper) (__is_signed_integer, __is_unsigned_integer) (__make_unsigned, __make_signed): Likewise. * include/std/limits (__INT_N): Add __extension__ keyword. * include/bits/random.h (_Select_uint_least_t) (random_device): Likewise. 2021-07-16 Patrick Palka PR libstdc++/101231 * include/std/ranges (_CachedPosition::_M_get): For non-forward ranges, just call __builtin_unreachable. * testsuite/std/ranges/istream_view.cc (test05): New test. 2021-07-16 Patrick Palka PR libstdc++/101214 * include/std/ranges (split_view::split_view): Use std::move. (split_view::_Iterator::_Iterator): Remove redundant default_initializable constraint. (split_view::_Sentinel::_Sentinel): Declare. * testsuite/std/ranges/adaptors/split.cc (test02): New test. 2021-07-16 Marek Polacek * testsuite/20_util/ratio/operations/ops_overflow_neg.cc: Add dg-error. 2021-07-16 Jonathan Wakely * include/bits/unique_ptr.h: Adjust doxygen markup. 2021-07-16 Jonathan Wakely PR libstdc++/101307 * include/std/type_traits: Adjust doxygen markup. 2021-07-16 Jonathan Wakely * include/bits/cpp_type_traits.h: Add diagnostic pragmas around uses of non-standard integer types. * include/bits/functional_hash.h: Likewise. * include/bits/iterator_concepts.h: Likewise. * include/bits/max_size_type.h: Likewise. * include/bits/std_abs.h: Likewise. * include/bits/stl_algobase.h: Likewise. * include/bits/uniform_int_dist.h: Likewise. * include/ext/numeric_traits.h: Likewise. * include/std/type_traits: Likewise. 2021-07-15 Jonathan Wakely PR libstdc++/101427 * include/std/tuple (tuple_element): Improve static_assert text. (__get_helper): Add deleted overload. (get(tuple&&), get(const tuple&&)): Use __get_helper directly. (__get_helper2): Remove. (__find_uniq_type_in_pack): New constexpr helper function. (get): Use __find_uniq_type_in_pack and __get_helper instead of __get_helper2. * testsuite/20_util/tuple/element_access/get_neg.cc: Adjust expected errors. * testsuite/20_util/tuple/element_access/101427.cc: New test. 2021-07-15 Jonathan Wakely PR libstdc++/101429 * include/bits/c++config (__replacement_assert): Add noexcept. [!_GLIBCXX_VERBOSE] (__glibcxx_assert_impl): Use __builtin_abort instead of __replacement_assert. 2021-07-14 Jonathan Wakely * include/std/string_view (basic_string_view(It, End)): Add noexcept-specifier. * testsuite/21_strings/basic_string_view/cons/char/range.cc: Check noexcept-specifier. Also check construction without CTAD. 2021-07-13 Jonathan Wakely PR c++/101361 * include/std/string_view (ends_with): Use traits_type::compare directly. 2021-07-13 Jonathan Wakely * include/std/string_view: Only include once, and only for C++20 and later. 2021-07-12 Jonathan Wakely PR libstdc++/101411 * include/std/span (as_writable_bytes): Add requires-clause. * testsuite/23_containers/span/101411.cc: New test. 2021-07-09 Matheus Castanho * include/std/mutex (__lock_impl): Check _GLIBCXX_HAS_GTHREADS before using __gthread_yield. 2021-07-02 Jonathan Wakely PR libstdc++/101271 * include/bits/unique_ptr.h (unique_ptr::operator[]): Remove noexcept-specifier. (unique_ptr::_S_nothrow_deref): Remove. * testsuite/20_util/unique_ptr/lwg2762.cc: Remove checks for operator[]. 2021-07-01 Jonathan Wakely * doc/doxygen/doxygroups.cc: Fix docs for std::literals. * doc/doxygen/user.cfg.in: Exclude the Networking TS header. Add some more predefined macros. * include/bits/fs_fwd.h: Move @addtogroup commands inside namespaces. Add better documentation. * include/bits/fs_path.h: Likewise. * include/experimental/bits/fs_fwd.h: Likewise. * include/experimental/bits/fs_path.h: Likewise. * include/ext/throw_allocator.h: Fix typo and improve docs. * include/std/chrono: Move @addtogroup commands. * include/std/system_error: Move @addtogroup commands. * libsupc++/exception: Improve documentation. * libsupc++/exception.h: Add @since documentation. 2021-06-30 Jonathan Wakely PR libstdc++/101258 * doc/doxygen/user.cfg.in (INPUT): Add . (COLS_IN_ALPHA_INDEX): Remove obsolete tag. (PREDEFINED): Add/fix some more macros that need to be expanded. * include/bits/random.h: Stop Doxygen from documenting internal implementation details. * include/bits/random.tcc: Likewise. * include/bits/this_thread_sleep.h: Fix @file name. * include/experimental/bits/simd.h: Add to Doxygen group. Do not document internal implementation details. * include/experimental/bits/simd_detail.h: Do not document internal implementation details. * include/experimental/simd: Define Doxygen groups. * include/experimental/type_traits: Improve documentation for the header file. Define groups. Use @since commands. * include/std/scoped_allocator (scoped_allocator_adaptor): Move declaration before undocumented region. * include/std/type_traits (true_type, false_type): Use using declaration instead of typedef. (is_invocable_v, is_nothrow_invocable_v, is_invocable_r_v) (is_nothrow_invocable_r_v): Move definitions next to other C++17 variable templates. Do not document internal implementation details. Move misplaced group-end command. Define group for variable templates. * include/std/variant: Do not document internal implementation details. * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error line number. 2021-06-30 Jonathan Wakely * include/experimental/simd: Do not define anything pre-C++17. 2021-06-30 Jonathan Wakely * include/bits/random.tcc [__cpp_inline_variables]: Remove redundant definitions of static constexpr member variables. * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error line number. 2021-06-28 Jonathan Wakely * include/bits/streambuf.tcc (__copy_streambufs_eof): Remove explicit instantiation declarations. * src/c++11/streambuf-inst.cc (__copy_streambufs_eof): Remove explicit instantiation definitions. 2021-06-28 Jonathan Wakely PR libstdc++/97088 * testsuite/17_intro/names.cc: Fix #if condition for names used by newlib headers. 2021-06-28 Jonathan Wakely PR libstdc++/101236 * include/bits/unique_ptr.h (unique_ptr::operator[]): Fail gracefully if element_type is incomplete. * testsuite/20_util/unique_ptr/cons/incomplete.cc: Clarify that the standard doesn't require this test to work for array types. * testsuite/20_util/unique_ptr/lwg2762.cc: Check that incomplete types can be used with array specialization. * testsuite/20_util/unique_ptr/101236.cc: New test. 2021-06-28 Jonathan Wakely * doc/xml/manual/intro.xml: Document LWG 415 change. * doc/html/manual/bugs.html: Regenerate. * include/bits/istream.tcc (ws): Create sentry and catch exceptions. * testsuite/27_io/basic_istream/ws/char/lwg415.cc: New test. * testsuite/27_io/basic_istream/ws/wchar_t/lwg415.cc: New test. 2021-06-25 Jonathan Wakely * include/bits/ostream.tcc (basic_ostream::write): Call sputn directly instead of using _M_write. Do setstate(__err) all outside the try-catch block. * include/std/ostream (basic_ostream::_M_write): Declare private. Use __ostream_insert. Do not define for the versioned namespace. 2021-06-25 Jonathan Wakely * doc/xml/manual/intro.xml: Document LWG 581 change. * doc/html/manual/bugs.html: Regenerate. * include/bits/basic_ios.tcc: Whitespace. * include/bits/ostream.tcc (basic_ostream::flush()): Construct sentry. * testsuite/27_io/basic_ostream/flush/char/2.cc: Check additional cases. * testsuite/27_io/basic_ostream/flush/char/exceptions_badbit_throw.cc: Likewise. * testsuite/27_io/basic_ostream/flush/wchar_t/2.cc: Likewise. * testsuite/27_io/basic_ostream/flush/wchar_t/exceptions_badbit_throw.cc: Likewise. 2021-06-25 Jonathan Wakely * include/bits/ostream.tcc (sentry): Only set failbit if badbit is set, not if eofbit is set. (tellp, seekp, seekp): Create sentry object. Do not set badbit on exceptions. * testsuite/27_io/basic_ostream/seekp/char/exceptions_badbit_throw.cc: Adjust expected behaviour. * testsuite/27_io/basic_ostream/seekp/wchar_t/exceptions_badbit_throw.cc: Likewise. * testsuite/27_io/basic_ostream/tellp/char/exceptions_badbit_throw.cc: Likewise. * testsuite/27_io/basic_ostream/tellp/wchar_t/exceptions_badbit_throw.cc: Likewise. * testsuite/27_io/basic_ostream/seekp/char/n3168.cc: New test. * testsuite/27_io/basic_ostream/seekp/wchar_t/n3168.cc: New test. * testsuite/27_io/basic_ostream/tellp/char/n3168.cc: New test. * testsuite/27_io/basic_ostream/tellp/wchar_t/n3168.cc: New test. 2021-06-25 Jonathan Wakely * include/std/syncstream (basic_syncbuf::swap()): Remove noexcept, as per LWG 3498. 2021-06-25 Jonathan Wakely PR libstdc++/97088 * testsuite/17_intro/names.cc: Undef more names for newlib and also for arm-none-linux-gnueabi. * testsuite/experimental/names.cc: Disable PCH. 2021-06-25 Matthias Kretz * include/experimental/bits/simd.h (__bit_cast): Implement via __builtin_bit_cast #if available. (__proposed::simd_bit_cast): Add overloads for simd and simd_mask, which use __builtin_bit_cast (or __bit_cast #if not available), which return an object of the requested type with the same bits as the argument. * include/experimental/bits/simd_math.h: Use simd_bit_cast instead of __bit_cast to allow casts to fixed_size_simd. (copysign): Remove branch that was only required if __bit_cast cannot be constexpr. * testsuite/experimental/simd/tests/bits/test_values.h: Switch from __bit_cast to __proposed::simd_bit_cast since the former will not cast fixed_size objects anymore. 2021-06-24 Matthias Kretz * include/experimental/bits/simd_math.h (_GLIBCXX_SIMD_MATH_CALL2_): Rename arg2_ to __arg2. (_GLIBCXX_SIMD_MATH_CALL3_): Rename arg2_ to __arg2 and arg3_ to __arg3. 2021-06-24 Matthias Kretz * include/experimental/bits/simd.h (__execute_on_index_sequence) (__execute_on_index_sequence_with_return) (__call_with_n_evaluations, __call_with_subscripts): Add flatten attribute. 2021-06-24 Matthias Kretz * include/experimental/bits/simd_x86.h (_S_trunc, _S_floor) (_S_ceil): Set bit 8 (_MM_FROUND_NO_EXC) on AVX and SSE4.1 roundp[sd] calls. 2021-06-24 Matthias Kretz * include/experimental/bits/simd_x86.h (_S_ldexp): The AVX512F implementation doesn't require a _VecBltnBtmsk ABI tag, it requires either a 64-Byte input (in which case AVX512F must be available) or AVX512VL. 2021-06-24 Matthias Kretz * include/experimental/bits/simd_math.h: Undefine internal macros after use. (frexp): Move #if to a more sensible position and reformat preceding code. (logb): Call _SimdImpl::_S_logb for fixed_size instead of duplicating the code here. (modf): Simplify condition. 2021-06-24 Matthias Kretz * include/experimental/bits/simd_math.h (fabs): Remove fabs(simd) overload. 2021-06-24 Matthias Kretz * include/experimental/bits/simd_converter.h (_SimdConverter::operator()): Pass _SimdTuple by const-ref. * include/experimental/bits/simd_fixed_size.h (_GLIBCXX_SIMD_FIXED_OP): Pass binary operator _SimdTuple arguments by const-ref. (_S_masked_unary): Pass _SimdTuple by const-ref. 2021-06-24 Matthias Kretz * include/experimental/bits/simd_fixed_size.h (_AbisInSimdTuple): Removed. 2021-06-24 Matthias Kretz * include/experimental/bits/simd.h: Add missing operator~ overload for simd to __float_bitwise_operators. * include/experimental/bits/simd_builtin.h (_SimdImplBuiltin::_S_complement): Bitcast to int (and back) to implement complement for floating-point vectors. * include/experimental/bits/simd_fixed_size.h (_SimdImplFixedSize::_S_copysign): New function, forwarding to copysign implementation of _SimdTuple members. * include/experimental/bits/simd_math.h (copysign): Call _SimdImpl::_S_copysign for fixed_size arguments. Simplify generic copysign implementation using the new ~ operator. 2021-06-24 Jonathan Wakely * testsuite/experimental/simd/README.md: Fix typos. 2021-06-24 Jonathan Wakely * include/bits/shared_ptr_base.h (__shared_ptr_access::operator[]): Add noexcept. * include/bits/unique_ptr.h (unique_ptr::operator*): Add conditional noexcept as per LWG 2762. * testsuite/20_util/shared_ptr/observers/array.cc: Check that dereferencing cannot throw. * testsuite/20_util/shared_ptr/observers/get.cc: Likewise. * testsuite/20_util/optional/observers/lwg2762.cc: New test. * testsuite/20_util/unique_ptr/lwg2762.cc: New test. 2021-06-23 Patrick Palka PR c++/101174 * testsuite/23_containers/multiset/cons/deduction.cc: Uncomment CTAD example that was rejected by this bug. * testsuite/23_containers/set/cons/deduction.cc: Likewise. 2021-06-23 Jonathan Wakely * include/std/chrono (chrono::year::is_leap()): Fix incorrect logic in comment. 2021-06-23 Matthias Kretz * testsuite/experimental/simd/README.md: New file. 2021-06-23 Matthias Kretz * testsuite/experimental/simd/driver.sh: Rewrite output verbosity logic. Add -p/--percentage option. Allow -v/--verbose to be used twice. Add -x and -o short options. Parse long options with = instead of separating space generically. Parce contracted short options. Make unrecognized options an error. If same-line output is active, trap on EXIT to increment the progress (only with --percentage), erase the line and print the current status. * testsuite/experimental/simd/generate_makefile.sh: Initialize helper files for progress account keeping. Update help target for changes to DRIVEROPTS. 2021-06-23 Matthias Kretz * testsuite/Makefile.am (check-simd): Remove -fno-tree-vrp flag and associated warning. * testsuite/Makefile.in: Regenerate. 2021-06-23 Cassio Neri Jonathan Wakely Ulrich Drepper * include/std/chrono (chrono::year::is_leap()): Optimize. 2021-06-23 Patrick Palka PR c++/86439 * testsuite/23_containers/map/cons/deduction.cc: Replace ambiguous CTAD examples. * testsuite/23_containers/multimap/cons/deduction.cc: Likewise. * testsuite/23_containers/multiset/cons/deduction.cc: Likewise. Mention one of the replaced examples is broken due to PR101174. * testsuite/23_containers/set/cons/deduction.cc: Likewise. * testsuite/23_containers/unordered_map/cons/deduction.cc: Replace ambiguous CTAD examples. * testsuite/23_containers/unordered_multimap/cons/deduction.cc: Likewise. * testsuite/23_containers/unordered_multiset/cons/deduction.cc: Likewise. * testsuite/23_containers/unordered_set/cons/deduction.cc: Likewise. 2021-06-23 Jonathan Wakely * include/std/mutex (__detail::__try_lock_impl): Rename parameter to avoid clashing with newlib's __lockable macro. (try_lock): Add 'inline' specifier. * testsuite/17_intro/names.cc: Add check for __lockable. * testsuite/30_threads/try_lock/5.cc: Add options for pthreads. 2021-06-22 Jonathan Wakely Matthias Kretz * include/std/mutex (lock): Replace recursion with iteration when lockables all have the same type. (__detail::__try_lock_impl): Likewise. Pass lockables as parameters, instead of a tuple. Always lock the first one, and recurse for the rest. (__detail::__lock_impl): Adjust call to __try_lock_impl. (__detail::__try_to_lock): Remove. * testsuite/30_threads/lock/3.cc: Check that mutexes are locked. * testsuite/30_threads/lock/4.cc: Also test non-heterogeneous arguments. * testsuite/30_threads/unique_lock/cons/60497.cc: Also check std::try_lock. * testsuite/30_threads/try_lock/5.cc: New test. 2021-06-22 Jonathan Wakely * include/std/memory (declare_reachable, undeclare_reachable) (declare_no_pointers, undeclare_no_pointers, get_pointer_safety) (pointer_safety): Only define for C++11 to C++20 inclusive. * testsuite/20_util/pointer_safety/1.cc: Do not run for C++23. 2021-06-22 Jonathan Wakely * include/bits/random.h (seed_seq): Constrain initializer-list constructor. * include/bits/random.tcc (seed_seq): Add template parameter. * testsuite/26_numerics/random/seed_seq/cons/default.cc: Check for noexcept. * testsuite/26_numerics/random/seed_seq/cons/initlist.cc: Check constraints. 2021-06-22 Thomas Rodgers PR libstdc++/100806 * include/bits/semaphore_base.h (__atomic_semaphore::_M_release): Force _M_release() to wake all waiting threads. * testsuite/30_threads/semaphore/100806.cc: New test. 2021-06-21 Jonathan Wakely * include/std/mutex (__try_to_lock): Move to __detail namespace. (struct __try_lock_impl): Replace with ... (__detail::__try_lock_impl(tuple&)): New function templates to implement std::try_lock. (try_lock): Use new __try_lock_impl. (__detail::__lock_impl(int, int&, L0&, L1&...)): New function template to implement std::lock. (lock): Use __lock_impl. 2021-06-21 Patrick Palka * include/bits/ranges_cmp.h (__cpp_lib_ranges): Adjust value. 2021-06-20 Patrick Palka * include/std/ranges (__non_propagating_cache::operator bool): Define for split_view::begin(). (split_view): Define as per P2210. (views::__detail::__can_split_view): Define. (views::_Split, views::split): Define. * testsuite/std/ranges/adaptors/100577.cc (test01, test02): Test views::split. * testsuite/std/ranges/adaptors/split.cc: New test. * testsuite/std/ranges/p2325.cc (test08a): New test. * testsuite/std/ranges/p2367.cc (test01): Test views::split. 2021-06-20 Patrick Palka * include/std/ranges: Rename views::split to views::lazy_split, split_view to lazy_split_view, etc. throughout. * testsuite/std/ranges/*: Likewise. * testsuite/std/ranges/adaptors/lazy_split.cc: New file. * testsuite/std/ranges/adaptors/lazy_split_neg.cc: New file. 2021-06-20 Patrick Palka * include/std/ranges (split_view::_OuterIter::__at_end): Check _M_trailing_empty. (split_view::_OuterIter::_M_trailing_empty): Define this data member. (split_view::_OuterIter::operator++): Set _M_trailing_empty appropriately. (split_view::_OuterIter::operator==): Compare _M_trailing_empty. * testsuite/std/ranges/adaptors/100479.cc (test03): Expect two split parts instead of one. * testsuite/std/ranges/adaptors/split.cc (test11): New test. 2021-06-20 Patrick Palka * include/std/ranges (split_view::_InnerIter::base): Define as per P2210. 2021-06-19 Patrick Palka * include/std/ranges (transform_view::_Iterator::_S_iter_concept): Consider _Base instead of _Vp as per LWG 3555. (elements_view::_Iterator::_S_iter_concept): Likewise. 2021-06-19 Patrick Palka * include/std/ranges (split_view::_OuterIter::value_type::begin): Remove the non-const overload, and remove the copyable constraint on the const overload as per LWG 3553. 2021-06-19 Patrick Palka * include/bits/stl_iterator.h (__detail::__common_iter_use_postfix_proxy): Add move_constructible constraint as per LWG 3546. (common_iterator::__postfix_proxy): Adjust initializer of _M_keep as per LWG 3546. 2021-06-18 Patrick Palka PR libstdc++/100387 * include/bits/ranges_algo.h (__minmax_fn::operator()): Rewrite to limit comparison complexity to 3*N/2. (__minmax_element_fn::operator()): Likewise. (shift_right): Avoid premature std::move of __result. * testsuite/25_algorithms/minmax/constrained.cc (test04, test05): New tests. * testsuite/25_algorithms/minmax_element/constrained.cc (test02): Likewise. 2021-06-18 Patrick Palka * include/std/concepts (convertible_to): Just use declval as per LWG 3557. 2021-06-18 Jonathan Wakely PR libstdc++/95833 * include/std/numeric (reduce(Iter, Iter, T, BinaryOp)): Replace incorrect static_assert with ones matching the 'Mandates' conditions in the standard. * testsuite/26_numerics/reduce/95833.cc: New test. 2021-06-18 Jonathan Wakely * testsuite/21_strings/basic_string/cons/char/1.cc: Use diagnostic pragma to suppress -Wstringop-overread error. 2021-06-18 Patrick Palka * include/bits/ranges_algo.h (__find_fn, find, __find_if_fn) (find_if, __find_if_not_fn, find_if_not, _in_in_result) (__mismatch_fn, mismatch, __search_fn, search): Move to ... * include/bits/ranges_util.h: ... here. * include/std/ranges (__detail::find, __detail::find_if) (__detail::find_if_not, __detail::mismatch): Remove. (filter_view): Use ranges::find_if instead. (drop_while_view): Use ranges::find_if_not instead. (split_view): Use ranges::find and ranges::mismatch instead. 2021-06-18 Patrick Palka * include/bits/iterator_concepts.h (weakly_incrementable): Remove default_initializable requirement. * include/bits/ranges_base.h (ranges::view): Likewise. * include/bits/ranges_util.h (subrange): Constrain the default ctor. * include/bits/stl_iterator.h (back_insert_iterator): Remove the default ctor. (front_insert_iterator): Likewise. (insert_iterator): Likewise. Remove NSDMIs. (common_iterator): Constrain the default ctor. (counted_iterator): Likewise. * include/bits/stream_iterator.h (ostream_iterator): Remove the default ctor. * include/std/ranges (__detail::__box::operator=): Handle self-assignment in the primary template. (__detail::__box): In the partial specialization: adjust constraints as per P2325. Add specialized operator= for the case when the wrapped type is not copyable. Constrain the default ctor. Avoid list-initialization. (single_view): Constraint the default ctor. (iota_view): Relax semiregular constraint to copyable. Constrain the default ctor. (iota_view::_Iterator): Constraint the default ctor. (basic_istream_view): Remove the default ctor. Remove NSDMIs. Remove redundant checks for empty _M_stream. (basic_istream_view::_Iterator): Likewise. (ref_view): Remove the default ctor. Remove NSDMIs. (ref_view::_Iterator): Constrain the default ctor. (__detail::__non_propagating_cache::operator=): Define overload for assigning from a value of the underlying type. (filter_view): Likewise. (filter_view::_Iterator): Likewise. (transform_view): Likewise. (transform_view::_Iterator): Likewise. (take_view): Likewise. (take_view::_Iterator): Likewise. (take_while_view): Likewise. (take_while_view::_Iterator): Likewise. (drop_while_view): Likewise. (drop_while_view::_Iterator): Likewise. (join_view): Likewise. (split_view::_OuterIter::__current): Adjust after changing the type of _M_current. (split_view::_M_current): Wrap it in a __non_propagating_cache. (split_view::split_view): Constrain the default ctor. (common_view): Constrain the default ctor. (reverse_view): Likewise. (elements_view): Likewise. * include/std/span (enable_view>): Define this partial specialization to true unconditionally. * include/std/version (__cpp_lib_ranges): Adjust value. * testsuite/24_iterators/back_insert_iterator/constexpr.cc: Don't attempt to default construct a back_insert_iterator. * testsuite/24_iterators/front_insert_iterator/constexpr.cc: Don't attempt to default construct a front_insert_iterator. * testsuite/24_iterators/insert_iterator/constexpr.cc: Don't attempt to default construct an insert_iterator. * testsuite/24_iterators/ostream_iterator/requirements/constexpr.cc: Remove this test for default constructibility of ostream_iterator. * testsuite/std/ranges/97600.cc: Don't attempt to default construct a basic_istream_view. * testsuite/std/ranges/adaptors/detail/semiregular_box.cc: Rename to ... * testsuite/std/ranges/adaptors/detail/copyable_box.cc: ... this. (test02): Adjust now that __box is copyable-box not semiregular-box. (test03): New test. * testsuite/std/ranges/p2325.cc: New test. * testsuite/std/ranges/single_view.cc (test06): New test. * testsuite/std/ranges/view.cc: Adjust now that view doesn't require default_initializable. 2021-06-17 Jonathan Wakely PR libstdc++/91488 * include/bits/basic_string.h (__cpp_lib_constexpr_string): Only define when is_constant_evaluated is available. * include/bits/char_traits.h (__cpp_lib_constexpr_char_traits): Likewise. (__constant_string_p, __constant_array_p): Remove. (char_traits): Use is_constant_evaluated directly. * include/std/version (__cpp_lib_constexpr_char_traits) (__cpp_lib_constexpr_string): Only define when is_constant_evaluated is available. 2021-06-17 Patrick Palka PR libstdc++/100940 * include/std/ranges (__adaptor::_Partial): For the "simple" forwarding partial specializations, also require that the extra arguments are trivially copyable. * testsuite/std/ranges/adaptors/100577.cc (test04): New test. 2021-06-17 Patrick Palka PR libstdc++/100940 * include/std/ranges (__adaptor::_RangeAdaptor): Document the template form of _S_has_simple_extra_args. (__adaptor::__adaptor_has_simple_extra_args): Add _Args template parameter pack. Try to treat _S_has_simple_extra_args as a variable template parameterized by _Args. (__adaptor::_Partial): Pass _Arg/_Args to the constraint __adaptor_has_simple_extra_args. (views::_Take::_S_has_simple_extra_args): Templatize according to the type of the extra argument. (views::_Drop::_S_has_simple_extra_args): Likewise. (views::_Split::_S_has_simple_extra_args): Define. * testsuite/std/ranges/adaptors/100577.cc (test01, test02): Adjust after changes to _S_has_simple_extra_args mechanism. (test03): Define. 2021-06-16 Jonathan Wakely * include/bits/iterator_concepts.h (__decay_copy): Name type. 2021-06-16 Jonathan Wakely * include/bits/ranges_base.h (ranges::begin, ranges::end) (ranges::cbegin, ranges::cend, ranges::rbeing, ranges::rend) (ranges::crbegin, ranges::crend, ranges::size, ranges::ssize) (ranges::empty, ranges::data, ranges::cdata): Remove final keywords and deleted operator& overloads. * testsuite/24_iterators/customization_points/iter_move.cc: Use new is_customization_point_object function. * testsuite/24_iterators/customization_points/iter_swap.cc: Likewise. * testsuite/std/concepts/concepts.lang/concept.swappable/swap.cc: Likewise. * testsuite/std/ranges/access/begin.cc: Likewise. * 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/rbegin.cc: Likewise. * testsuite/std/ranges/access/rend.cc: Likewise. * testsuite/std/ranges/access/size.cc: Likewise. * testsuite/std/ranges/access/ssize.cc: Likewise. * testsuite/util/testsuite_iterators.h (is_customization_point_object): New function. 2021-06-15 Jonathan Wakely * include/bits/ranges_base.h (ranges::begin, ranges::end) (ranges::cbegin, ranges::cend, ranges::rbeing, ranges::rend) (ranges::crbegin, ranges::crend, ranges::size, ranges::ssize) (ranges::empty, ranges::data, ranges::cdata): Make types final. Add deleted operator& overloads. (ranges::advance, ranges::distance, ranges::next, ranges::prev): Likewise. * testsuite/std/ranges/headers/ranges/synopsis.cc: Replace ill-formed & expressions with using-declarations. Add checks for other function objects. 2021-06-15 Jonathan Wakely * include/bits/ranges_util.h (view_interface): Add noexcept to empty, operator bool, data and size members. (subrange): Add noexcept to constructors. * include/std/ranges (single_view, ref_view): Add noexcept to constructors. (views::single, views::all): Add noexcept. * testsuite/std/ranges/adaptors/all.cc: Check noexcept. * testsuite/std/ranges/single_view.cc: Likewise. 2021-06-15 Jonathan Wakely * include/bits/ranges_util.h (subrange): Add __size_type typedef and use it to simplify declarations. (subrange(i, s, n)): Remove assertion. * testsuite/std/ranges/subrange/constexpr.cc: New test. 2021-06-15 Jonathan Wakely * include/bits/iterator_concepts.h (__cust_access::__decay_copy): Replace with function object. (__cust_access::__member_begin, ___cust_access::_adl_begin): Use __decay_copy unqualified. * include/bits/ranges_base.h (__member_end, __adl_end): Likewise. Use __range_iter_t for type of ranges::begin. (__member_rend): Use correct value category for rbegin argument. (__member_data): Use __decay_copy unqualified. (__begin_data): Use __range_iter_t for type of ranges::begin. 2021-06-14 Jonathan Wakely * include/bits/ranges_base.h (ranges::empty): Check whether conversion to bool can throw. * testsuite/std/ranges/access/empty.cc: Check for correct noexcept-specifier. 2021-06-14 Jonathan Wakely PR libstdc++/100894 * include/std/type_traits (__common_ref_impl): Only use the type if it's a reference. * testsuite/20_util/common_reference/100894.cc: New test. 2021-06-14 Jonathan Wakely * testsuite/experimental/filesystem/path/native/conv_c++23.cc: Add dg-require-filesystem-ts directive. 2021-06-14 Jonathan Wakely PR libstdc++/101034 * include/std/any (any(in_place_t, initializer_list, A&&...)) (any::emplace(initializer_list, A&&...)): Fix constraint to use lvalue. * testsuite/20_util/any/cons/101034.cc: New test. 2021-06-14 Jonathan Wakely * testsuite/17_intro/headers/c++2017/all_attributes.cc: Add -std=gnu++17 option. 2021-06-14 Jonathan Wakely PR libstdc++/101056 * libsupc++/compare (compare_partial_order_fallback): Add constraint using reversed parameter order, as per LWG 3465. * testsuite/18_support/comparisons/algorithms/fallback.cc: Adjust expected result. 2021-06-14 Jonathan Wakely * libsupc++/compare (__decayed_same_as): New helper concept. (strong_order, weak_order, partial_order): Constrain with new concept instead of using static_assert. (compare_strong_order_fallback, compare_weak_order_fallback) (compare_partial_order_fallback): Likewise. Do not deduce return types. Remove redundant if-constexpr checks. * testsuite/18_support/comparisons/algorithms/fallback.cc: New test. 2021-06-14 Jonathan Wakely PR libstdc++/101055 * include/std/tuple: Use reserved form of attribute name. * testsuite/17_intro/headers/c++2011/all_attributes.cc: Add check for no_unique_address. * testsuite/17_intro/headers/c++2014/all_attributes.cc: Likewise. * testsuite/17_intro/headers/c++2017/all_attributes.cc: Likewise. 2021-06-11 Jonathan Wakely * include/bits/fs_path.h (operator==, operator<=>): Use new _S_compare function. (path::_S_compare): New function to call path::compare in a context where path::iterator is complete. * include/experimental/bits/fs_path.h (operator<, operator==): Define after path::iterator is complete. * testsuite/27_io/filesystem/path/native/conv_c++23.cc: New test. * testsuite/experimental/filesystem/path/native/conv_c++23.cc: New test. 2021-06-09 Thomas Rodgers * testsuite/29_atomics/atomic_ref/wait_notify.cc: Guard test logic with constexpr check for is_always_lock_free. 2021-06-09 Jonathan Wakely PR libstdc++/100982 * include/std/optional (optional::operator=(const optional&)): Fix value category used in is_assignable check. * testsuite/20_util/optional/assignment/100982.cc: New test. 2021-06-09 Jonathan Wakely * include/bits/allocator.h (allocator::is_always_equal): Deprecate. * include/bits/iterator_concepts.h (indirectly_readable_traits): Add LWG issue number to comment. * include/std/memory_resource (polymorphic_allocator::release): Deprecate. * testsuite/20_util/allocator/requirements/typedefs.cc: Add dg-warning for deprecation. Also check std::allocator. 2021-06-08 Thomas Rodgers PR libstdc++/100889 * include/bits/atomic_base.h (atomic_ref<_Tp*>::wait): Change parameter type from _Tp to _Tp*. * testsuite/29_atomics/atomic_ref/wait_notify.cc: Extend coverage of types tested. 2021-06-08 Thomas Rodgers * include/std/barrier (__tree_barrier::_M_arrive): Remove unnecessary hasher instantiation. 2021-06-08 Jonathan Wakely * include/experimental/propagate_const (swap): Constrain. * testsuite/experimental/propagate_const/swap/lwg3413.cc: New test. 2021-06-07 Avi Kivity PR libstdc++/100900 * include/std/ranges (elements_view::__iter_cat::_S_iter_cat): Add missing typename. 2021-06-07 Jonathan Wakely PR libstdc++/98842 * include/std/optional (operator<=>(const optional& const U&)): Add missing constraint and add workaround for template recursion. * testsuite/20_util/optional/relops/three_way.cc: Check that type without equality comparison cannot be compared when wrapped in std::optional. 2021-06-05 Jonathan Wakely PR libstdc++/100824 * include/bits/ranges_base.h (_SSize): Return signed type. * testsuite/std/ranges/access/ssize.cc: Check with __int128. 2021-06-04 Jonathan Wakely * include/bits/ranges_base.h (_SSize): Return the result of ranges::size converted to the wider of make-signed-like-t and ptrdiff_t, rather than the ranges different type. * testsuite/std/ranges/access/ssize.cc: Adjust expected result for an iota_view that uses an integer class type for its difference_type. 2021-06-04 Jonathan Wakely PR libstdc++/100824 * include/bits/ranges_base.h (__member_data): Use __decay_copy. * testsuite/std/ranges/access/data.cc: Add testcase from PR. 2021-06-04 Jonathan Wakely PR libstdc++/100824 * include/bits/iterator_concepts.h (__detail::__decay_copy) (__detail::__member_begin, __detail::__adl_begin): Move to namespace ranges::__cust_access. (__detail::__ranges_begin): Likewise, and rename to __begin. Remove redundant static assertion. * include/bits/ranges_base.h (_Begin, _End, _RBegin, _REnd): Use lvalue in noexcept specifier. (__as_const): Add non-deduced parameter for value category. (_CBegin, _CEnd, _CRBegin, _CREnd, _CData): Adjust uses of __as_const. (__member_size, __adl_size, __member_empty, __size0_empty): (__eq_iter_empty, __adl_data): Use lvalue objects in requirements. (__sentinel_size): Likewise. Add check for conversion to unsigned-like. (__member_data): Allow non-lvalue types to satisfy the concept, but use lvalue object in requirements. (_Size, _SSize): Remove forwarding to always use an lvalue. (_Data): Likewise. Add static assertion for arrays. * testsuite/std/ranges/access/cdata.cc: Adjust expected behaviour for rvalues. Add negative tests for ill-formed expressions. * testsuite/std/ranges/access/data.cc: Likewise. * testsuite/std/ranges/access/empty.cc: Adjust expected behaviour for rvalues. * testsuite/std/ranges/access/size.cc: Likewise. 2021-06-04 Tim Adye * include/std/any (any::_Manager::_S_access): New static function to access the contained value. (any::emplace, __any_caster): Use _S_access member of the manager type. 2021-06-04 Jonathan Wakely * doc/xml/manual/status_cxx2020.xml: * doc/html/*: Regenerate. * include/bits/hashtable.h (__cpp_lib_generic_unordered_lookup): Define. * include/std/version (__cpp_lib_generic_unordered_lookup): Define. * testsuite/23_containers/unordered_map/operations/1.cc: Check feature test macro. * testsuite/23_containers/unordered_set/operations/1.cc: Likewise. 2021-06-03 Patrick Palka * include/bits/ranges_algo.h (__detail::__can_reread_output): Factor out this concept from ... (__unique_copy_fn::operator()): ... here. Use the concept throughout. * testsuite/std/ranges/range.cc: Remove now ill-formed use of range_value_t on an output_range. * testsuite/util/testsuite_iterators.h (output_iterator_wrapper): Define value_type, pointer and reference member types to void. 2021-06-03 Patrick Palka PR libstdc++/100577 * include/std/ranges (_RangeAdaptorClosure): Document _S_has_simple_call_op mechanism. (_RangeAdaptor): Document _S_has_simple_extra_args mechanism. (__closure_has_simple_call_op): New concept. (__adaptor_has_simple_extra_args): Likewise. (_Partial<_Adaptor, _Args...>): New partial specialization. (_Partial<_Adaptor, _Arg>): Likewise. (_Pipe<_Lhs, _Rhs>): Likewise. (views::_All::_S_has_simple_call_op): Define to true. (views::_Filter::_S_has_simple_extra_args): Likewise. (views::_Transform::_S_has_simple_extra_args): Likewise. (views::_Take::_S_has_simple_extra_args): Likewise. (views::_TakeWhile::_S_has_simple_extra_args): Likewise. (views::_Drop::_S_has_simple_extra_args): Likewise. (views::_DropWhile::_S_has_simple_extra_args): Likewise. (views::_Join::_S_has_simple_call_op): Likewise. (views::_Split): Document why we don't define _S_has_simple_extra_args to true for this adaptor. (views::_Common::_S_has_simple_call_op): Define to true. (views::_Reverse::_S_has_simple_call_op): Likewise. (views::_Elements::_S_has_simple_call_op): Likewise. * testsuite/std/ranges/adaptors/100577.cc: New test. 2021-06-02 Jonathan Wakely PR libstdc++/100863 PR libstdc++/65816 * include/bits/hashtable_policy.h (_Hashtable_ebo_helper): Value-initialize subobject. * testsuite/23_containers/unordered_map/allocator/default_init.cc: Remove XFAIL. * testsuite/23_containers/unordered_set/allocator/default_init.cc: Remove XFAIL. 2021-06-02 Jonathan Wakely PR libstdc++/96088 * testsuite/23_containers/unordered_map/96088.cc: Adjust expected number of allocations. * testsuite/23_containers/unordered_set/96088.cc: Likewise. 2021-06-02 Jonathan Wakely * doc/xml/manual/status_cxxis29124.xml: Improve punctuation. * doc/xml/manual/status_cxxtr1.xml: Likewise. * doc/xml/manual/status_cxxtr24733.xml: Likewise. * doc/html/*: Regenerate. 2021-06-01 Patrick Palka PR c++/65816 * testsuite/23_containers/deque/allocator/default_init.cc, testsuite/23_containers/forward_list/allocator/default_init.cc, testsuite/23_containers/list/allocator/default_init.cc, testsuite/23_containers/map/allocator/default_init.cc, testsuite/23_containers/set/allocator/default_init.cc, testsuite/23_containers/vector/allocator/default_init.cc, testsuite/23_containers/vector/bool/allocator/default_init.cc: Remove xfail. 2021-06-01 Jonathan Wakely * testsuite/23_containers/unordered_map/96088.cc: Change effective target to c++17. * testsuite/23_containers/unordered_set/96088.cc: Likewise. 2021-06-01 Jonathan Wakely * testsuite/22_locale/ctype/is/string/89728_neg.cc: Only test isblank for C++11 and later. 2021-06-01 Jonathan Wakely PR libstdc++/100833 * include/bits/ranges_base.h (ranges::advance(iter, n, sentinel)): Fix return value for no-op case. * testsuite/24_iterators/range_operations/advance.cc: Test return values of three-argument overload. 2021-06-01 Jonathan Wakely PR libstdc++/99453 * python/Makefile.am: Use archive name for printer hook if no dynamic library name is available. * python/Makefile.in: Regenerate. 2021-05-30 Gerald Pfeifer * doc/xml/manual/abi.xml: Remove dead reference to "Intel Compilers for Linux: Compatibility with GNU Compilers" article. * doc/html/manual/abi.html: Regenerate. 2021-05-26 François Dumont * include/debug/formatter.h (_Error_formatter::_Parameter::_Named): New. (_Error_formatter::_Parameter::_Type): Inherit latter. (_Error_formatter::_Parameter::_M_integer): Likewise. (_Error_formatter::_Parameter::_M_string): Likewise. * src/c++11/debug.cc: Include . (_Print_func_t): New. (print_raw(PrintContext&, const char*, ptrdiff_t)): New. (print_word): Use '%.*s' format in fprintf to render only expected number of chars. (pretty_print(PrintContext&, const char*, _Print_func_t)): New. (print_type): Rename in... (print_type_info): ...this. Use pretty_print. (print_address, print_integer): New. (print_named_name, print_iterator_constness, print_iterator_state): New. (print_iterator_seq_type): New. (print_named_field, print_type_field, print_instance_field, print_iterator_field): New. (print_field): Use latters. (print_quoted_named_name, print_type_type, print_type, print_instance): New. (print_string(PrintContext&, const char*, const _Parameter*, size_t)): Change signature to... (print_string(PrintContext&, const char*, ptrdiff_t, const _Parameter*, size_t)): ...this and adapt. Remove intermediate buffer to render input string. (print_string(PrintContext&, const char*, ptrdiff_t)): New. 2021-05-26 Jonathan Wakely PR libstdc++/100768 * include/bits/ranges_base.h (advance, distance, next, prev): Replace function templates with function objects. * testsuite/24_iterators/headers/iterator/synopsis_c++20.cc: Adjust for changes to function objects. * testsuite/std/ranges/adaptors/elements.cc: Add using declarations for names from namespace ranges. * testsuite/std/ranges/adaptors/transform.cc: Likewise. * testsuite/24_iterators/range_operations/100768.cc: New test. 2021-05-24 François Dumont PR libstdc++/96088 * include/bits/hashtable_policy.h (_Select2nd): New. (_NodeBuilder<>): New. (_ReuseOrAllocNode<>::operator()): Use variadic template args. (_AllocNode<>::operator()): Likewise. * include/bits/hashtable.h (_Hashtable<>::__node_builder_t): New. (_Hashtable<>::_M_insert_unique<>(_Kt&&, _Arg&&, const _NodeGenerator&)): New. (_Hashtable<>::_S_forward_key): New. (_Hashtable<>::_M_insert): Use latter. (_Hashtable<>::_M_insert(const_iterator, _Arg&&, const _NodeGenerator&, false_type)): Instantiate node first, compute hash code second. * testsuite/23_containers/unordered_map/96088.cc: New test. * testsuite/23_containers/unordered_multimap/96088.cc: New test. * testsuite/23_containers/unordered_multiset/96088.cc: New test. * testsuite/23_containers/unordered_set/96088.cc: New test. * testsuite/util/replacement_memory_operators.h (counter::_M_increment): New. (counter::_M_decrement): New. (counter::reset()): New. 2021-05-24 Patrick Palka PR libstdc++/100479 * include/std/ranges (__detail::__non_propagating_cache): Move definition up to before that of _CachedPosition. Make base class _Optional_base protected instead of private. Add const overload for operator*. (__detail::_CachedPosition): Rewrite the partial specialization for forward ranges as a derived class of __non_propagating_cache. Remove the size constraint on the partial specialization for random access ranges. Add copy/move/copy-assignment/move-assignment members to the offset partial specialization for random access ranges that propagate the cached value but additionally invalidate it in the source object on move. * testsuite/std/ranges/adaptors/100479.cc: New test. 2021-05-24 Jonathan Wakely * testsuite/25_algorithms/inplace_merge/constrained.cc: Qualify call to ranges::next. * testsuite/25_algorithms/is_sorted/constrained.cc: Likewise. * testsuite/25_algorithms/is_sorted_until/constrained.cc: Likewise. * testsuite/25_algorithms/swap_ranges/1.cc: Qualify call to swap_ranges. 2021-05-21 Patrick Palka PR libstdc++/100606 * include/std/ranges (drop_while_view::begin): Assert the precondition added by LWG 3490. 2021-05-21 Patrick Palka PR libstdc++/100690 * include/std/ranges (iota_view::_Sentinel::_M_distance_from): Split out this member function from ... (iota_view::_Sentinel::operator-): ... here, for sake of access control. * testsuite/std/ranges/iota/iota_view.cc (test05): New test. 2021-05-20 Jonathan Wakely * include/bits/random.tcc (__representable_as_double) (__p1_representable_as_double): Add "" to static asserts. 2021-05-20 Jonathan Wakely PR libstdc++/100676 * include/bits/c++config (__glibcxx_assert_1): Rename to ... (__glibcxx_constexpr_assert): ... this. (__glibcxx_assert_impl): Use __glibcxx_constexpr_assert. (__glibcxx_assert): Define as either __glibcxx_constexpr_assert or __glibcxx_assert_impl. (__glibcxx_assert_2): Remove * include/debug/macros.h (_GLIBCXX_DEBUG_VERIFY_AT_F): Use __glibcxx_constexpr_assert instead of __glibcxx_assert_1. * testsuite/21_strings/basic_string_view/element_access/char/back_constexpr_neg.cc: Adjust expected error. * testsuite/21_strings/basic_string_view/element_access/char/constexpr_neg.cc: Likewise. * testsuite/21_strings/basic_string_view/element_access/char/front_constexpr_neg.cc: Likewise. Likewise. * testsuite/21_strings/basic_string_view/element_access/wchar_t/back_constexpr_neg.cc: Likewise. * testsuite/21_strings/basic_string_view/element_access/wchar_t/constexpr_neg.cc: Likewise. * testsuite/21_strings/basic_string_view/element_access/wchar_t/front_constexpr_neg.cc: Likewise. * testsuite/23_containers/span/back_neg.cc: Likewise. * testsuite/23_containers/span/front_neg.cc: Likewise. * testsuite/23_containers/span/index_op_neg.cc: Likewise. 2021-05-20 Patrick Palka PR libstdc++/100639 * include/bits/stl_iterator.h (reverse_iterator::difference_type): In C++20 mode, define in terms of iter_difference_t as per P0896R4. (reverse_iterator::reference): Likewise, but with iter_reference_t. (reverse_iterator::value_type): Likewise, but with iter_value_t. * testsuite/std/ranges/adaptors/reverse.cc (test08): New test. * testsuite/24_iterators/reverse_iterator/100639.cc: New test. 2021-05-20 Joern Rennecke PR libstdc++/100361 * include/std/charconv (to_chars): Hide the overloads for floating-point types for 16 bit targets. * src/c++17/floating_to_chars.cc: Don't compile for 16 bit targets. * testsuite/20_util/to_chars/double.cc: Run this test only on size32plus targets. * testsuite/20_util/to_chars/float.cc: Likewise. * testsuite/20_util/to_chars/long_double.cc: Likewise. 2021-05-18 Patrick Palka PR libstdc++/100631 * include/std/ranges (elements_view::_Sentinel::operator-): Use _M_distance_from in the other operator- overload too. * testsuite/std/ranges/adaptors/elements.cc (test06): Augment test. 2021-05-18 Thomas Schwinge * testsuite/lib/prune.exp: Add note about 'dg-note'. 2021-05-18 Patrick Palka PR libstdc++/100475 * include/std/ranges (__box::__box): Use non-list-initialization in member initializer list of in-place constructor of the partial specialization for semiregular types. (__box::operator->): Use std::__addressof. * testsuite/std/ranges/adaptors/detail/semiregular_box.cc (test02): New test. * testsuite/std/ranges/single_view.cc (test04): New test. 2021-05-18 Patrick Palka PR libstdc++/100621 * include/std/ranges (reverse_view::_S_needs_cached_begin): Set to true if the underlying non-common random-access range doesn't have a sized sentinel. 2021-05-18 Patrick Palka PR libstdc++/100631 * include/std/ranges (elements_view::_Iterator): Also befriend _Sentinel. (elements_view::_Sentinel::_M_equal): Templatize. (elements_view::_Sentinel::_M_distance_from): Split out from ... (elements_view::_Sentinel::operator-): ... here. Depend on _Base2 instead of _Base in the return type. * testsuite/std/ranges/adaptors/elements.cc (test06, test07): New tests. 2021-05-17 Thomas Rodgers * include/bits/atomic_wait.h (__waiter::_M_do_wait_v): loop until value change observed. (__waiter_base::_M_laundered): New member. (__waiter_base::_M_notify): Check _M_laundered to determine whether to wake one or all. (__detail::__atomic_compare): Return true if call to __builtin_memcmp() == 0. (__waiter_base::_S_do_spin_v): Adjust predicate. * testsuite/29_atomics/atomic/wait_notify/100334.cc: New test. 2021-05-17 Jonathan Wakely PR libstdc++/100630 * include/experimental/bits/fs_path.h (__is_constructible_from): Test construction from a const lvalue, not an rvalue. * testsuite/27_io/filesystem/path/construct/100630.cc: New test. * testsuite/experimental/filesystem/path/construct/100630.cc: New test. 2021-05-17 Antony Polukhin PR libstdc++/89728 * include/bits/locale_facets.h (ctype>): Declare (but do not define) partial specialization. * testsuite/22_locale/ctype/is/string/89728_neg.cc: New test. 2021-05-17 Jonathan Wakely * include/std/thread (jthread::_S_create): Fix static assert message. * testsuite/30_threads/jthread/95989.cc: Re-enable test. * testsuite/30_threads/jthread/jthread.cc: Do not require pthread effective target. * testsuite/30_threads/jthread/2.cc: Moved to... * testsuite/30_threads/jthread/version.cc: ...here. 2021-05-17 Jonathan Wakely * doc/Makefile.am: Simplify doxygen recipes and use --latex_cmd. * doc/Makefile.in: Regenerate. * doc/doxygen/user.cfg.in (LATEX_CMD_NAME): Add placeholder value. * scripts/run_doxygen (print_usage): Always print to stdout and do not exit. (fail): New function for exiting on error. (parse_options): Handle --latex_cmd. Do not treat --help the same as errors. Simplify handling of required arguments. 2021-05-12 Jonathan Wakely * testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc: Increase dg-timeout-factor to 4. Fix -Wunused-parameter warnings. Replace bitwise AND with logical AND in loop condition. * testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc: Replace bitwise AND with logical AND in loop condition. * testsuite/util/pstl/test_utils.h: Remove unused parameter names. 2021-05-11 Patrick Palka * src/c++17/ryu/LOCAL_PATCHES: Update. * src/c++17/ryu/ryu_generic_128.h: Remove extern "C". Remove declarations for never-defined functions. * testsuite/20_util/to_chars/4.cc: New test. 2021-05-11 Jonathan Wakely * testsuite/20_util/headers/memory/synopsis.cc: Define C++98 alternative for macro. * testsuite/20_util/shared_ptr/creation/99006.cc: Add effective target keyword. * testsuite/25_algorithms/copy/debug/99402.cc: Avoid C++11 syntax. 2021-05-11 Jonathan Wakely * include/bits/allocator.h (allocator) [C++20]: Add missing noexcept to constructor. Restore missing POCMA and is_always_equal_traits. [C++17]: Make construct and destroy members private and declare allocator_traits as a friend. * include/bits/memoryfwd.h (allocator_traits): Declare. * include/ext/malloc_allocator.h (malloc_allocator::allocate): Add nodiscard attribute. Add static assertion for LWG 3307. * include/ext/new_allocator.h (new_allocator::allocate): Add static assertion for LWG 3307. * testsuite/20_util/allocator/void.cc: Check that converting constructor is noexcept. Check for propagation traits and size_type and difference_type. Check that pointer and const_pointer are gone in C++20. 2021-05-10 Jonathan Wakely * include/std/stop_token: Remove TODO comment. 2021-05-10 Jonathan Wakely * include/bits/shared_ptr_base.h (__shared_count(unique_ptr&&)): Initialize a non-reference deleter from an rvalue, as per LWG 3548. (__shared_ptr::_UniqCompatible): Add missing constraint. * testsuite/20_util/shared_ptr/cons/lwg3548.cc: New test. * testsuite/20_util/shared_ptr/cons/unique_ptr_deleter.cc: Check constraints. 2021-05-10 Jonathan Wakely * testsuite/17_intro/headers/c++2017/all_attributes.cc: Remove -std=gnu++17 from dg-options directive. * testsuite/17_intro/headers/c++2017/all_no_exceptions.cc: Likewise. * testsuite/17_intro/headers/c++2017/all_pedantic_errors.cc: Likewise. * testsuite/17_intro/headers/c++2017/operator_names.cc: Likewise. * testsuite/17_intro/headers/c++2017/parallel_mode.cc: Likewise. * testsuite/17_intro/headers/c++2017/stdc++.cc: Likewise. * testsuite/17_intro/headers/c++2017/stdc++_multiple_inclusion.cc: Likewise. * testsuite/18_support/aligned_alloc/aligned_alloc.cc: Likewise. * testsuite/18_support/byte/81076.cc: Likewise. * testsuite/18_support/byte/global_neg.cc: Likewise. * testsuite/18_support/byte/ops.cc: Likewise. * testsuite/18_support/byte/requirements.cc: Likewise. * testsuite/18_support/headers/cfloat/values_c++17.cc: Likewise. * testsuite/18_support/launder/1.cc: Likewise. * testsuite/18_support/launder/nodiscard.cc: Likewise. * testsuite/18_support/launder/requirements.cc: Likewise. * testsuite/18_support/launder/requirements_neg.cc: Likewise. * testsuite/18_support/new_aligned.cc: Likewise. * testsuite/18_support/uncaught_exceptions/uncaught_exceptions.cc: Likewise. * testsuite/19_diagnostics/error_code/is_error_code_v.cc: Likewise. * testsuite/19_diagnostics/error_condition/hash.cc: Likewise. * testsuite/20_util/addressof/requirements/constexpr.cc: Likewise. * testsuite/20_util/as_const/1.cc: Likewise. * testsuite/20_util/as_const/rvalue_neg.cc: Likewise. * testsuite/20_util/bind/83427.cc: Likewise. * testsuite/20_util/bind/is_placeholder_v.cc: Likewise. * testsuite/20_util/bool_constant/requirements.cc: Likewise. * testsuite/20_util/duration/arithmetic/constexpr_c++17.cc: Likewise. * testsuite/20_util/duration/requirements/treat_as_floating_point_v.cc: Likewise. * testsuite/20_util/duration_cast/rounding.cc: Likewise. * testsuite/20_util/enable_shared_from_this/members/weak_from_this.cc: Likewise. * testsuite/20_util/from_chars/1_neg.cc: Likewise. * testsuite/20_util/from_chars/requirements.cc: Likewise. * testsuite/20_util/function/91456.cc: Likewise. * testsuite/20_util/function/cons/deduction.cc: Likewise. * testsuite/20_util/function_objects/83607.cc: Likewise. * testsuite/20_util/function_objects/invoke/59768.cc: Likewise. * testsuite/20_util/function_objects/mem_fn/80478.cc: Likewise. * testsuite/20_util/function_objects/not_fn/1.cc: Likewise. * testsuite/20_util/function_objects/not_fn/87538.cc: Likewise. * testsuite/20_util/has_unique_object_representations/requirements/explicit_instantiation.cc: Likewise. * testsuite/20_util/has_unique_object_representations/requirements/typedefs.cc: Likewise. * testsuite/20_util/has_unique_object_representations/value.cc: Likewise. * testsuite/20_util/hash/nullptr.cc: Likewise. * testsuite/20_util/in_place/requirements.cc: Likewise. * testsuite/20_util/is_aggregate/incomplete_neg.cc: Likewise. * testsuite/20_util/is_aggregate/requirements/explicit_instantiation.cc: Likewise. * testsuite/20_util/is_aggregate/requirements/typedefs.cc: Likewise. * testsuite/20_util/is_aggregate/value.cc: Likewise. * testsuite/20_util/is_invocable/83395.cc: Likewise. * testsuite/20_util/is_invocable/91456.cc: Likewise. * testsuite/20_util/is_invocable/requirements/explicit_instantiation.cc: Likewise. * testsuite/20_util/is_invocable/requirements/typedefs.cc: Likewise. * testsuite/20_util/is_invocable/value.cc: Likewise. * testsuite/20_util/is_literal_type/deprecated-1z.cc: Likewise. * testsuite/20_util/is_nothrow_constructible/94003.cc: Likewise. * testsuite/20_util/is_nothrow_invocable/83395.cc: Likewise. * testsuite/20_util/is_nothrow_invocable/requirements/explicit_instantiation.cc: Likewise. * testsuite/20_util/is_nothrow_invocable/requirements/typedefs.cc: Likewise. * testsuite/20_util/is_nothrow_invocable/value.cc: Likewise. * testsuite/20_util/is_nothrow_swappable/requirements/explicit_instantiation.cc: Likewise. * testsuite/20_util/is_nothrow_swappable/requirements/typedefs.cc: Likewise. * testsuite/20_util/is_nothrow_swappable/value.cc: Likewise. * testsuite/20_util/is_nothrow_swappable_with/requirements/explicit_instantiation.cc: Likewise. * testsuite/20_util/is_nothrow_swappable_with/requirements/typedefs.cc: Likewise. * testsuite/20_util/is_nothrow_swappable_with/value.cc: Likewise. * testsuite/20_util/is_swappable/requirements/explicit_instantiation.cc: Likewise. * testsuite/20_util/is_swappable/requirements/typedefs.cc: Likewise. * testsuite/20_util/is_swappable/value.cc: Likewise. * testsuite/20_util/is_swappable_with/requirements/explicit_instantiation.cc: Likewise. * testsuite/20_util/is_swappable_with/requirements/typedefs.cc: Likewise. * testsuite/20_util/is_swappable_with/value.cc: Likewise. * testsuite/20_util/logical_traits/83134.cc: Likewise. * testsuite/20_util/logical_traits/requirements/explicit_instantiation.cc: Likewise. * testsuite/20_util/logical_traits/requirements/typedefs.cc: Likewise. * testsuite/20_util/logical_traits/value.cc: Likewise. * testsuite/20_util/pair/cons/deduction.cc: Likewise. * testsuite/20_util/pair/swap_cxx17.cc: Likewise. * testsuite/20_util/ratio/requirements/ratio_equal_v.cc: Likewise. * testsuite/20_util/reference_wrapper/83427.cc: Likewise. * testsuite/20_util/reference_wrapper/deduction.cc: Likewise. * testsuite/20_util/shared_ptr/casts/reinterpret.cc: Likewise. * testsuite/20_util/shared_ptr/cons/deduction.cc: Likewise. * testsuite/20_util/shared_ptr/requirements/weak_type.cc: Likewise. * testsuite/20_util/time_point/arithmetic/constexpr.cc: Likewise. * testsuite/20_util/time_point_cast/rounding.cc: Likewise. * testsuite/20_util/to_chars/3.cc: Likewise. * testsuite/20_util/to_chars/chars_format.cc: Likewise. * testsuite/20_util/to_chars/lwg3266.cc: Likewise. * testsuite/20_util/to_chars/requirements.cc: Likewise. * testsuite/20_util/tuple/78939.cc: Likewise. * testsuite/20_util/tuple/apply/1.cc: Likewise. * testsuite/20_util/tuple/apply/2.cc: Likewise. * testsuite/20_util/tuple/cons/deduction.cc: Likewise. * testsuite/20_util/tuple/make_from_tuple/1.cc: Likewise. * testsuite/20_util/tuple/make_from_tuple/2.cc: Likewise. * testsuite/20_util/tuple/swap_cxx17.cc: Likewise. * testsuite/20_util/tuple/tuple_size_v.cc: Likewise. * testsuite/20_util/unique_ptr/cons/deduction_neg.cc: Likewise. * testsuite/20_util/uses_allocator/requirements/uses_allocator_v.cc: Likewise. * testsuite/20_util/variable_templates_for_traits.cc: Likewise. * testsuite/20_util/void_t/1.cc: Likewise. * testsuite/20_util/weak_ptr/cons/deduction.cc: Likewise. * testsuite/24_iterators/container_access.cc: Likewise. * testsuite/24_iterators/headers/iterator/range_access_c++17.cc: Likewise. * testsuite/24_iterators/headers/iterator/synopsis_c++17.cc: Likewise. * testsuite/24_iterators/range_access/range_access_cpp17.cc: Likewise. * testsuite/24_iterators/range_access/range_access_cpp17_neg.cc: Likewise. * testsuite/26_numerics/gcd/gcd_neg.cc: Likewise. * testsuite/26_numerics/headers/cmath/functions_std_c++17.cc: Likewise. * testsuite/26_numerics/headers/cmath/hypot.cc: Likewise. * testsuite/26_numerics/headers/cmath/special_functions_global.cc: Likewise. * testsuite/26_numerics/lcm/1.cc: Likewise. * testsuite/26_numerics/lcm/lcm_neg.cc: Likewise. * testsuite/26_numerics/valarray/deduction.cc: Likewise. * testsuite/27_io/basic_ostream/inserters_other/char/lwg2221.cc: Likewise. * testsuite/27_io/manipulators/standard/char/quoted_sv.cc: Likewise. * testsuite/27_io/manipulators/standard/wchar_t/quoted_sv.cc: Likewise. * testsuite/27_io/types/4.cc: Likewise. * testsuite/28_regex/basic_regex/ctors/deduction.cc: Likewise. * testsuite/libstdc++-prettyprinters/91997.cc: Likewise. * testsuite/libstdc++-prettyprinters/cxx17.cc: Likewise. 2021-05-10 Jonathan Wakely * testsuite/20_util/function_objects/searchers.cc: Remove -std=gnu++17 from dg-options directive. * testsuite/20_util/specialized_algorithms/memory_management_tools/1.cc: Likewise. * testsuite/20_util/specialized_algorithms/memory_management_tools/destroy_neg.cc: Likewise. * testsuite/20_util/specialized_algorithms/uninitialized_value_construct/94540.cc: Likewise. * testsuite/20_util/specialized_algorithms/uninitialized_value_construct/94831.cc: Likewise. * testsuite/20_util/specialized_algorithms/uninitialized_value_construct_n/94540.cc: Likewise. * testsuite/20_util/specialized_algorithms/uninitialized_value_construct_n/sizes.cc: Likewise. * testsuite/20_util/unique_ptr/specialized_algorithms/swap_cxx17.cc: Likewise. * testsuite/25_algorithms/clamp/1.cc: Likewise. * testsuite/25_algorithms/clamp/2.cc: Likewise. * testsuite/25_algorithms/clamp/constexpr.cc: Likewise. * testsuite/25_algorithms/clamp/requirements/explicit_instantiation/1.cc: Likewise. * testsuite/25_algorithms/clamp/requirements/explicit_instantiation/pod.cc: Likewise. * testsuite/25_algorithms/for_each/for_each_n.cc: Likewise. * testsuite/25_algorithms/for_each/for_each_n_debug.cc: Likewise. * testsuite/25_algorithms/sample/1.cc: Likewise. * testsuite/25_algorithms/sample/2.cc: Likewise. * testsuite/25_algorithms/sample/3.cc: Likewise. * testsuite/25_algorithms/sample/81221.cc: Likewise. * testsuite/25_algorithms/search/searcher.cc: Likewise. * testsuite/26_numerics/exclusive_scan/1.cc: Likewise. * testsuite/26_numerics/inclusive_scan/1.cc: Likewise. * testsuite/26_numerics/reduce/1.cc: Likewise. * testsuite/26_numerics/reduce/2.cc: Likewise. * testsuite/26_numerics/transform_exclusive_scan/1.cc: Likewise. * testsuite/26_numerics/transform_inclusive_scan/1.cc: Likewise. * testsuite/26_numerics/transform_reduce/1.cc: Likewise. 2021-05-10 Jonathan Wakely * testsuite/23_containers/array/cons/deduction.cc: Remove -std=gnu++17 from dg-options directive. * testsuite/23_containers/array/cons/deduction_neg.cc: Likewise. * testsuite/23_containers/array/element_access/constexpr_c++17.cc: Likewise. * testsuite/23_containers/array/requirements/constexpr_iter.cc: Likewise. * testsuite/23_containers/array/specialized_algorithms/swap_cxx17.cc: Likewise. * testsuite/23_containers/deque/cons/deduction.cc: Likewise. * testsuite/23_containers/deque/modifiers/emplace/cxx17_return.cc: Likewise. * testsuite/23_containers/forward_list/cons/deduction.cc: Likewise. * testsuite/23_containers/forward_list/modifiers/emplace_cxx17_return.cc: Likewise. * testsuite/23_containers/list/cons/deduction.cc: Likewise. * testsuite/23_containers/list/modifiers/emplace/cxx17_return.cc: Likewise. * testsuite/23_containers/map/cons/deduction.cc: Likewise. * testsuite/23_containers/map/modifiers/extract.cc: Likewise. * testsuite/23_containers/map/modifiers/insert/83226.cc: Likewise. * testsuite/23_containers/map/modifiers/insert_or_assign/1.cc: Likewise. * testsuite/23_containers/map/modifiers/merge.cc: Likewise. * testsuite/23_containers/map/modifiers/try_emplace/1.cc: Likewise. * testsuite/23_containers/multimap/cons/deduction.cc: Likewise. * testsuite/23_containers/multimap/modifiers/extract.cc: Likewise. * testsuite/23_containers/multimap/modifiers/merge.cc: Likewise. * testsuite/23_containers/multiset/cons/deduction.cc: Likewise. * testsuite/23_containers/multiset/modifiers/extract.cc: Likewise. * testsuite/23_containers/multiset/modifiers/merge.cc: Likewise. * testsuite/23_containers/priority_queue/deduction.cc: Likewise. * testsuite/23_containers/queue/deduction.cc: Likewise. * testsuite/23_containers/queue/members/emplace_cxx17_return.cc: Likewise. * testsuite/23_containers/set/cons/deduction.cc: Likewise. * testsuite/23_containers/set/modifiers/extract.cc: Likewise. * testsuite/23_containers/set/modifiers/merge.cc: Likewise. * testsuite/23_containers/set/modifiers/node_swap.cc: Likewise. * testsuite/23_containers/stack/deduction.cc: Likewise. * testsuite/23_containers/stack/members/emplace_cxx17_return.cc: Likewise. * testsuite/23_containers/unordered_map/cons/deduction.cc: Likewise. * testsuite/23_containers/unordered_map/modifiers/extract.cc: Likewise. * testsuite/23_containers/unordered_map/modifiers/insert_or_assign.cc: Likewise. * testsuite/23_containers/unordered_map/modifiers/merge.cc: Likewise. * testsuite/23_containers/unordered_map/modifiers/try_emplace.cc: Likewise. * testsuite/23_containers/unordered_multimap/cons/deduction.cc: Likewise. * testsuite/23_containers/unordered_multimap/modifiers/extract.cc: Likewise. * testsuite/23_containers/unordered_multimap/modifiers/merge.cc: Likewise. * testsuite/23_containers/unordered_multiset/cons/deduction.cc: Likewise. * testsuite/23_containers/unordered_multiset/modifiers/extract.cc: Likewise. * testsuite/23_containers/unordered_multiset/modifiers/merge.cc: Likewise. * testsuite/23_containers/unordered_set/cons/deduction.cc: Likewise. * testsuite/23_containers/unordered_set/modifiers/extract.cc: Likewise. * testsuite/23_containers/unordered_set/modifiers/merge.cc: Likewise. * testsuite/23_containers/vector/bool/emplace_cxx17_return.cc: Likewise. * testsuite/23_containers/vector/cons/89164_c++17.cc: Likewise. * testsuite/23_containers/vector/cons/deduction.cc: Likewise. * testsuite/23_containers/vector/modifiers/emplace/cxx17_return.cc: Likewise. 2021-05-10 Jonathan Wakely * testsuite/21_strings/basic_string/79162.cc: Remove -std=gnu++17 from dg-options directive. * testsuite/21_strings/basic_string/cons/char/7.cc: Likewise. * testsuite/21_strings/basic_string/cons/char/79162.cc: Likewise. * testsuite/21_strings/basic_string/cons/char/86138.cc: Likewise. * testsuite/21_strings/basic_string/cons/char/9.cc: Likewise. * testsuite/21_strings/basic_string/cons/char/deduction.cc: Likewise. * testsuite/21_strings/basic_string/cons/char/moveable2_c++17.cc: Likewise. * testsuite/21_strings/basic_string/cons/wchar_t/7.cc: Likewise. * testsuite/21_strings/basic_string/cons/wchar_t/79162.cc: Likewise. * testsuite/21_strings/basic_string/cons/wchar_t/86138.cc: Likewise. * testsuite/21_strings/basic_string/cons/wchar_t/9.cc: Likewise. * testsuite/21_strings/basic_string/cons/wchar_t/deduction.cc: Likewise. * testsuite/21_strings/basic_string/cons/wchar_t/moveable2_c++17.cc: Likewise. * testsuite/21_strings/basic_string/hash/hash.cc: Likewise. * testsuite/21_strings/basic_string/lwg2758.cc: Likewise. * testsuite/21_strings/basic_string/lwg2946.cc: Likewise. * testsuite/21_strings/basic_string/modifiers/append/char/4.cc: Likewise. * testsuite/21_strings/basic_string/modifiers/append/wchar_t/4.cc: Likewise. * testsuite/21_strings/basic_string/modifiers/assign/char/4.cc: Likewise. * testsuite/21_strings/basic_string/modifiers/assign/wchar_t/4.cc: Likewise. * testsuite/21_strings/basic_string/modifiers/insert/char/3.cc: Likewise. * testsuite/21_strings/basic_string/modifiers/insert/wchar_t/3.cc: Likewise. * testsuite/21_strings/basic_string/modifiers/replace/char/7.cc: Likewise. * testsuite/21_strings/basic_string/modifiers/replace/wchar_t/7.cc: Likewise. * testsuite/21_strings/basic_string/operations/compare/char/2.cc: Likewise. * testsuite/21_strings/basic_string/operations/compare/wchar_t/2.cc: Likewise. * testsuite/21_strings/basic_string/operations/data/char/2.cc: Likewise. * testsuite/21_strings/basic_string/operations/data/char/86169.cc: Likewise. * testsuite/21_strings/basic_string/operations/data/wchar_t/2.cc: Likewise. * testsuite/21_strings/basic_string/operations/find/char/5.cc: Likewise. * testsuite/21_strings/basic_string/operations/find/wchar_t/5.cc: Likewise. * testsuite/21_strings/basic_string/operators/char/5.cc: Likewise. * testsuite/21_strings/basic_string/operators/wchar_t/5.cc: Likewise. * testsuite/21_strings/basic_string_view/capacity/1.cc: Likewise. * testsuite/21_strings/basic_string_view/capacity/empty_neg.cc: Likewise. * testsuite/21_strings/basic_string_view/cons/char/1.cc: Likewise. * testsuite/21_strings/basic_string_view/cons/char/2.cc: Likewise. * testsuite/21_strings/basic_string_view/cons/char/3.cc: Likewise. * testsuite/21_strings/basic_string_view/cons/char/nonnull.cc: Likewise. * testsuite/21_strings/basic_string_view/cons/wchar_t/1.cc: Likewise. * testsuite/21_strings/basic_string_view/cons/wchar_t/2.cc: Likewise. * testsuite/21_strings/basic_string_view/cons/wchar_t/3.cc: Likewise. * testsuite/21_strings/basic_string_view/cons/wchar_t/nonnull.cc: Likewise. * testsuite/21_strings/basic_string_view/element_access/char/1.cc: Likewise. * testsuite/21_strings/basic_string_view/element_access/char/2.cc: Likewise. * testsuite/21_strings/basic_string_view/element_access/char/back_constexpr_neg.cc: Likewise. * testsuite/21_strings/basic_string_view/element_access/char/constexpr.cc: Likewise. * testsuite/21_strings/basic_string_view/element_access/char/constexpr_neg.cc: Likewise. * testsuite/21_strings/basic_string_view/element_access/char/empty.cc: Likewise. * testsuite/21_strings/basic_string_view/element_access/char/front_back.cc: Likewise. * testsuite/21_strings/basic_string_view/element_access/char/front_back_constexpr.cc: Likewise. * testsuite/21_strings/basic_string_view/element_access/char/front_constexpr_neg.cc: Likewise. * testsuite/21_strings/basic_string_view/element_access/wchar_t/1.cc: Likewise. * testsuite/21_strings/basic_string_view/element_access/wchar_t/2.cc: Likewise. * testsuite/21_strings/basic_string_view/element_access/wchar_t/back_constexpr_neg.cc: Likewise. * testsuite/21_strings/basic_string_view/element_access/wchar_t/constexpr.cc: Likewise. * testsuite/21_strings/basic_string_view/element_access/wchar_t/constexpr_neg.cc: Likewise. * testsuite/21_strings/basic_string_view/element_access/wchar_t/empty.cc: Likewise. * testsuite/21_strings/basic_string_view/element_access/wchar_t/front_back.cc: Likewise. * testsuite/21_strings/basic_string_view/element_access/wchar_t/front_constexpr_neg.cc: Likewise. * testsuite/21_strings/basic_string_view/include.cc: Likewise. * testsuite/21_strings/basic_string_view/inserters/94051.cc: Likewise. * testsuite/21_strings/basic_string_view/inserters/char/1.cc: Likewise. * testsuite/21_strings/basic_string_view/inserters/char/2.cc: Likewise. * testsuite/21_strings/basic_string_view/inserters/char/3.cc: Likewise. * testsuite/21_strings/basic_string_view/inserters/pod/10081-out.cc: Likewise. * testsuite/21_strings/basic_string_view/inserters/wchar_t/1.cc: Likewise. * testsuite/21_strings/basic_string_view/inserters/wchar_t/2.cc: Likewise. * testsuite/21_strings/basic_string_view/inserters/wchar_t/3.cc: Likewise. * testsuite/21_strings/basic_string_view/literals/types-char8_t.cc: Likewise. * testsuite/21_strings/basic_string_view/literals/types.cc: Likewise. * testsuite/21_strings/basic_string_view/literals/values-char8_t.cc: Likewise. * testsuite/21_strings/basic_string_view/literals/values.cc: Likewise. * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/char/1.cc: Likewise. * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/wchar_t/1.cc: Likewise. * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/char/1.cc: Likewise. * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/wchar_t/1.cc: Likewise. * testsuite/21_strings/basic_string_view/modifiers/swap/char/1.cc: Likewise. * testsuite/21_strings/basic_string_view/modifiers/swap/wchar_t/1.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/compare/char/1.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/compare/char/13650.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/compare/char/2.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/compare/char/70483.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/compare/char/nonnull.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/compare/wchar_t/1.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/compare/wchar_t/13650.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/compare/wchar_t/2.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/copy/char/1.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/copy/char/2.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/copy/wchar_t/1.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/copy/wchar_t/2.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/data/char/1.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/data/wchar_t/1.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/find/char/1.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/find/char/2.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/find/char/3.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/find/char/4.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/find/char/nonnull.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/find/wchar_t/1.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/find/wchar_t/2.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/find/wchar_t/3.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/find/wchar_t/4.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/rfind/char/1.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/rfind/char/2.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/rfind/char/3.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/rfind/char/nonnull.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/rfind/wchar_t/1.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/rfind/wchar_t/2.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/rfind/wchar_t/3.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/string_conversion/1.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/substr/char/1.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/substr/char/83511.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/substr/wchar_t/1.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/substr/wchar_t/83511.cc: Likewise. * testsuite/21_strings/basic_string_view/operators/char/2.cc: Likewise. * testsuite/21_strings/basic_string_view/operators/char/89446.cc: Likewise. * testsuite/21_strings/basic_string_view/operators/wchar_t/2.cc: Likewise. * testsuite/21_strings/basic_string_view/operators/wchar_t/89446.cc: Likewise. * testsuite/21_strings/basic_string_view/range_access/char/1.cc: Likewise. * testsuite/21_strings/basic_string_view/range_access/wchar_t/1.cc: Likewise. * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/1.cc: Likewise. * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char/1.cc: Likewise. * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char16_t/1.cc: Likewise. * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char32_t/1.cc: Likewise. * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char8_t/1.cc: Likewise. * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/wchar_t/1.cc: Likewise. * testsuite/21_strings/basic_string_view/requirements/traits_neg.cc: Likewise. * testsuite/21_strings/basic_string_view/requirements/typedefs.cc: Likewise. * testsuite/21_strings/basic_string_view/typedefs.cc: Likewise. * testsuite/21_strings/basic_string_view/types/1.cc: Likewise. * testsuite/21_strings/char_traits/requirements/char/99181.cc: Likewise. * testsuite/21_strings/char_traits/requirements/constexpr_functions_c++17.cc: 2021-05-10 Jonathan Wakely * testsuite/20_util/memory_resource/1.cc: Remove -std=gnu++17 from dg-options directive. * testsuite/20_util/memory_resource/2.cc: Likewise. * testsuite/20_util/monotonic_buffer_resource/1.cc: Likewise. * testsuite/20_util/monotonic_buffer_resource/93208.cc: Likewise. * testsuite/20_util/monotonic_buffer_resource/allocate.cc: Likewise. * testsuite/20_util/monotonic_buffer_resource/deallocate.cc: Likewise. * testsuite/20_util/monotonic_buffer_resource/release.cc: Likewise. * testsuite/20_util/monotonic_buffer_resource/upstream_resource.cc: Likewise. * testsuite/20_util/polymorphic_allocator/1.cc: Likewise. * testsuite/20_util/polymorphic_allocator/construct_pair.cc: Likewise. * testsuite/20_util/polymorphic_allocator/resource.cc: Likewise. * testsuite/20_util/polymorphic_allocator/select.cc: Likewise. * testsuite/20_util/synchronized_pool_resource/allocate.cc: Likewise. * testsuite/20_util/synchronized_pool_resource/allocate_single.cc: Likewise. * testsuite/20_util/synchronized_pool_resource/cons.cc: Likewise. * testsuite/20_util/synchronized_pool_resource/cons_single.cc: Likewise. * testsuite/20_util/synchronized_pool_resource/is_equal.cc: Likewise. * testsuite/20_util/synchronized_pool_resource/multithreaded.cc: Likewise. * testsuite/20_util/synchronized_pool_resource/options.cc: Likewise. * testsuite/20_util/synchronized_pool_resource/release.cc: Likewise. * testsuite/20_util/synchronized_pool_resource/release_single.cc: Likewise. * testsuite/20_util/unsynchronized_pool_resource/allocate-max-chunks.cc: Likewise. * testsuite/20_util/unsynchronized_pool_resource/allocate.cc: Likewise. * testsuite/20_util/unsynchronized_pool_resource/cons.cc: Likewise. * testsuite/20_util/unsynchronized_pool_resource/is_equal.cc: Likewise. * testsuite/20_util/unsynchronized_pool_resource/options.cc: Likewise. * testsuite/20_util/unsynchronized_pool_resource/release.cc: Likewise. * testsuite/21_strings/basic_string/types/pmr_typedefs.cc: Likewise. * testsuite/23_containers/deque/types/pmr_typedefs.cc: Likewise. * testsuite/23_containers/deque/types/pmr_typedefs_debug.cc: Likewise. * testsuite/23_containers/forward_list/pmr_typedefs.cc: Likewise. * testsuite/23_containers/forward_list/pmr_typedefs_debug.cc: Likewise. * testsuite/23_containers/list/pmr_typedefs.cc: Likewise. * testsuite/23_containers/list/pmr_typedefs_debug.cc: Likewise. * testsuite/23_containers/map/pmr_typedefs.cc: Likewise. * testsuite/23_containers/map/pmr_typedefs_debug.cc: Likewise. * testsuite/23_containers/multimap/pmr_typedefs.cc: Likewise. * testsuite/23_containers/multimap/pmr_typedefs_debug.cc: Likewise. * testsuite/23_containers/multiset/pmr_typedefs.cc: Likewise. * testsuite/23_containers/multiset/pmr_typedefs_debug.cc: Likewise. * testsuite/23_containers/set/pmr_typedefs.cc: Likewise. * testsuite/23_containers/set/pmr_typedefs_debug.cc: Likewise. * testsuite/23_containers/unordered_map/pmr_typedefs.cc: Likewise. * testsuite/23_containers/unordered_map/pmr_typedefs_debug.cc: Likewise. * testsuite/23_containers/unordered_multimap/pmr_typedefs.cc: Likewise. * testsuite/23_containers/unordered_multimap/pmr_typedefs_debug.cc: Likewise. * testsuite/23_containers/unordered_multiset/pmr_typedefs.cc: Likewise. * testsuite/23_containers/unordered_multiset/pmr_typedefs_debug.cc: Likewise. * testsuite/23_containers/unordered_set/pmr_typedefs.cc: Likewise. * testsuite/23_containers/unordered_set/pmr_typedefs_debug.cc: Likewise. * testsuite/23_containers/vector/pmr_typedefs.cc: Likewise. * testsuite/23_containers/vector/types/pmr_typedefs_debug.cc: Likewise. * testsuite/28_regex/match_results/pmr_typedefs.cc: Likewise. 2021-05-10 Jonathan Wakely * testsuite/29_atomics/atomic/69769.cc: Remove -std=gnu++17 from dg-options. * testsuite/29_atomics/atomic/is_always_lock_free.cc: * testsuite/29_atomics/atomic/requirements/typedefs.cc: * testsuite/29_atomics/atomic_integral/is_always_lock_free.cc: * testsuite/29_atomics/atomic_integral/requirements/typedefs.cc: * testsuite/30_threads/lock_guard/cons/deduction.cc: Likewise. * testsuite/30_threads/scoped_lock/cons/1.cc: Likewise. * testsuite/30_threads/scoped_lock/cons/deduction.cc: Likewise. * testsuite/30_threads/scoped_lock/requirements/explicit_instantiation.cc: Likewise. * testsuite/30_threads/scoped_lock/requirements/typedefs.cc: Likewise. * testsuite/30_threads/shared_lock/70766.cc: Likewise. * testsuite/30_threads/shared_mutex/cons/1.cc: Likewise. * testsuite/30_threads/shared_mutex/cons/assign_neg.cc: Likewise. * testsuite/30_threads/shared_mutex/cons/copy_neg.cc: Likewise. * testsuite/30_threads/shared_mutex/requirements/standard_layout.cc: Likewise. * testsuite/30_threads/shared_mutex/try_lock/1.cc: Likewise. * testsuite/30_threads/shared_mutex/try_lock/2.cc: Likewise. * testsuite/30_threads/shared_mutex/unlock/1.cc: Likewise. * testsuite/30_threads/unique_lock/cons/deduction.cc: Likewise. 2021-05-10 Jonathan Wakely * testsuite/20_util/any/assign/1.cc: Remove -std=gnu++17 from dg-options directive. * testsuite/20_util/any/assign/2.cc: Likewise. * testsuite/20_util/any/assign/emplace.cc: Likewise. * testsuite/20_util/any/assign/exception.cc: Likewise. * testsuite/20_util/any/assign/self.cc: Likewise. * testsuite/20_util/any/cons/1.cc: Likewise. * testsuite/20_util/any/cons/2.cc: Likewise. * testsuite/20_util/any/cons/90415.cc: Likewise. * testsuite/20_util/any/cons/92156.cc: Likewise. * testsuite/20_util/any/cons/aligned.cc: Likewise. * testsuite/20_util/any/cons/explicit.cc: Likewise. * testsuite/20_util/any/cons/in_place.cc: Likewise. * testsuite/20_util/any/cons/nontrivial.cc: Likewise. * testsuite/20_util/any/make_any.cc: Likewise. * testsuite/20_util/any/misc/any_cast.cc: Likewise. * testsuite/20_util/any/misc/any_cast_neg.cc: Likewise. * testsuite/20_util/any/misc/any_cast_no_rtti.cc: Likewise. * testsuite/20_util/any/misc/swap.cc: Likewise. * testsuite/20_util/any/modifiers/1.cc: Likewise. * testsuite/20_util/any/modifiers/83658.cc: Likewise. * testsuite/20_util/any/modifiers/92156.cc: Likewise. * testsuite/20_util/any/observers/type.cc: Likewise. * testsuite/20_util/any/requirements.cc: Likewise. * testsuite/20_util/any/typedefs.cc: Likewise. * testsuite/20_util/optional/77288.cc: Likewise. * testsuite/20_util/optional/84601.cc: Likewise. * testsuite/20_util/optional/assignment/1.cc: Likewise. * testsuite/20_util/optional/assignment/2.cc: Likewise. * testsuite/20_util/optional/assignment/3.cc: Likewise. * testsuite/20_util/optional/assignment/4.cc: Likewise. * testsuite/20_util/optional/assignment/5.cc: Likewise. * testsuite/20_util/optional/assignment/6.cc: Likewise. * testsuite/20_util/optional/assignment/7.cc: Likewise. * testsuite/20_util/optional/assignment/8.cc: Likewise. * testsuite/20_util/optional/assignment/9.cc: Likewise. * testsuite/20_util/optional/bad_access.cc: Likewise. * testsuite/20_util/optional/cons/77727.cc: Likewise. * testsuite/20_util/optional/cons/85642.cc: Likewise. * testsuite/20_util/optional/cons/copy.cc: Likewise. * testsuite/20_util/optional/cons/deduction.cc: Likewise. * testsuite/20_util/optional/cons/default.cc: Likewise. * testsuite/20_util/optional/cons/move.cc: Likewise. * testsuite/20_util/optional/cons/trivial.cc: Likewise. * testsuite/20_util/optional/cons/value.cc: Likewise. * testsuite/20_util/optional/cons/value_neg.cc: Likewise. * testsuite/20_util/optional/constexpr/cons/default.cc: Likewise. * testsuite/20_util/optional/constexpr/cons/value.cc: Likewise. * testsuite/20_util/optional/constexpr/in_place.cc: Likewise. * testsuite/20_util/optional/constexpr/make_optional.cc: Likewise. * testsuite/20_util/optional/constexpr/nullopt.cc: Likewise. * testsuite/20_util/optional/constexpr/observers/1.cc: Likewise. * testsuite/20_util/optional/constexpr/observers/2.cc: Likewise. * testsuite/20_util/optional/constexpr/observers/3.cc: Likewise. * testsuite/20_util/optional/constexpr/observers/4.cc: Likewise. * testsuite/20_util/optional/constexpr/observers/5.cc: Likewise. * testsuite/20_util/optional/constexpr/relops/1.cc: Likewise. * testsuite/20_util/optional/constexpr/relops/2.cc: Likewise. * testsuite/20_util/optional/constexpr/relops/3.cc: Likewise. * testsuite/20_util/optional/constexpr/relops/4.cc: Likewise. * testsuite/20_util/optional/constexpr/relops/5.cc: Likewise. * testsuite/20_util/optional/constexpr/relops/6.cc: Likewise. * testsuite/20_util/optional/hash.cc: Likewise. * testsuite/20_util/optional/in_place.cc: Likewise. * testsuite/20_util/optional/make_optional.cc: Likewise. * testsuite/20_util/optional/nullopt.cc: Likewise. * testsuite/20_util/optional/observers/1.cc: Likewise. * testsuite/20_util/optional/observers/2.cc: Likewise. * testsuite/20_util/optional/observers/3.cc: Likewise. * testsuite/20_util/optional/observers/4.cc: Likewise. * testsuite/20_util/optional/observers/5.cc: Likewise. * testsuite/20_util/optional/observers/6.cc: Likewise. * testsuite/20_util/optional/relops/1.cc: Likewise. * testsuite/20_util/optional/relops/2.cc: Likewise. * testsuite/20_util/optional/relops/3.cc: Likewise. * testsuite/20_util/optional/relops/4.cc: Likewise. * testsuite/20_util/optional/relops/5.cc: Likewise. * testsuite/20_util/optional/relops/6.cc: Likewise. * testsuite/20_util/optional/relops/7.cc: Likewise. * testsuite/20_util/optional/requirements.cc: Likewise. * testsuite/20_util/optional/swap/1.cc: Likewise. * testsuite/20_util/optional/swap/2.cc: Likewise. * testsuite/20_util/optional/typedefs.cc: Likewise. * testsuite/20_util/variant/80165.cc: Likewise. * testsuite/20_util/variant/85183.cc: Likewise. * testsuite/20_util/variant/86874.cc: Likewise. * testsuite/20_util/variant/87431.cc: Likewise. * testsuite/20_util/variant/87619.cc: Likewise. * testsuite/20_util/variant/91807.cc: Likewise. * testsuite/20_util/variant/any.cc: Likewise. * testsuite/20_util/variant/compile.cc: Likewise. * testsuite/20_util/variant/deduction.cc: Likewise. * testsuite/20_util/variant/exception_safety.cc: Likewise. * testsuite/20_util/variant/hash.cc: Likewise. * testsuite/20_util/variant/index_type.cc: Likewise. * testsuite/20_util/variant/relops/89851.cc: Likewise. * testsuite/20_util/variant/relops/90008.cc: Likewise. * testsuite/20_util/variant/run.cc: Likewise. * testsuite/20_util/variant/visit.cc: Likewise. 2021-05-10 Jonathan Wakely * testsuite/27_io/basic_filebuf/open/char/path.cc: Remove -std=gnu++17 from dg-options directive. * testsuite/27_io/basic_fstream/cons/char/path.cc: Likewise. * testsuite/27_io/basic_fstream/open/char/path.cc: Likewise. * testsuite/27_io/basic_ifstream/cons/char/path.cc: Likewise. * testsuite/27_io/basic_ifstream/open/char/path.cc: Likewise. * testsuite/27_io/basic_ofstream/cons/char/path.cc: Likewise. * testsuite/27_io/basic_ofstream/open/char/path.cc: Likewise. * testsuite/27_io/filesystem/directory_entry/86597.cc: Likewise. * testsuite/27_io/filesystem/directory_entry/lwg3171.cc: Likewise. * testsuite/27_io/filesystem/file_status/1.cc: Likewise. * testsuite/27_io/filesystem/filesystem_error/cons.cc: Likewise. * testsuite/27_io/filesystem/filesystem_error/copy.cc: Likewise. * testsuite/27_io/filesystem/iterators/91067.cc: Likewise. * testsuite/27_io/filesystem/iterators/caching.cc: Likewise. * testsuite/27_io/filesystem/iterators/directory_iterator.cc: Likewise. * testsuite/27_io/filesystem/iterators/pop.cc: Likewise. * testsuite/27_io/filesystem/iterators/recursion_pending.cc: Likewise. * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc: Likewise. * testsuite/27_io/filesystem/operations/absolute.cc: Likewise. * testsuite/27_io/filesystem/operations/all.cc: Likewise. * testsuite/27_io/filesystem/operations/canonical.cc: Likewise. * testsuite/27_io/filesystem/operations/copy.cc: Likewise. * testsuite/27_io/filesystem/operations/copy_file.cc: Likewise. * testsuite/27_io/filesystem/operations/create_directories.cc: Likewise. * testsuite/27_io/filesystem/operations/create_directory.cc: Likewise. * testsuite/27_io/filesystem/operations/create_symlink.cc: Likewise. * testsuite/27_io/filesystem/operations/current_path.cc: Likewise. * testsuite/27_io/filesystem/operations/equivalent.cc: Likewise. * testsuite/27_io/filesystem/operations/exists.cc: Likewise. * testsuite/27_io/filesystem/operations/file_size.cc: Likewise. * testsuite/27_io/filesystem/operations/is_empty.cc: Likewise. * testsuite/27_io/filesystem/operations/last_write_time.cc: Likewise. * testsuite/27_io/filesystem/operations/permissions.cc: Likewise. * testsuite/27_io/filesystem/operations/proximate.cc: Likewise. * testsuite/27_io/filesystem/operations/read_symlink.cc: Likewise. * testsuite/27_io/filesystem/operations/relative.cc: Likewise. * testsuite/27_io/filesystem/operations/remove.cc: Likewise. * testsuite/27_io/filesystem/operations/remove_all.cc: Likewise. * testsuite/27_io/filesystem/operations/rename.cc: Likewise. * testsuite/27_io/filesystem/operations/resize_file.cc: Likewise. * testsuite/27_io/filesystem/operations/space.cc: Likewise. * testsuite/27_io/filesystem/operations/status.cc: Likewise. * testsuite/27_io/filesystem/operations/symlink_status.cc: Likewise. * testsuite/27_io/filesystem/operations/temp_directory_path.cc: Likewise. * testsuite/27_io/filesystem/operations/weakly_canonical.cc: Likewise. * testsuite/27_io/filesystem/path/append/path.cc: Likewise. * testsuite/27_io/filesystem/path/append/source.cc: Likewise. * testsuite/27_io/filesystem/path/assign/assign.cc: Likewise. * testsuite/27_io/filesystem/path/assign/copy.cc: Likewise. * testsuite/27_io/filesystem/path/compare/compare.cc: Likewise. * testsuite/27_io/filesystem/path/compare/lwg2936.cc: Likewise. * testsuite/27_io/filesystem/path/compare/path.cc: Likewise. * testsuite/27_io/filesystem/path/compare/strings.cc: Likewise. * testsuite/27_io/filesystem/path/concat/92853.cc: Likewise. * testsuite/27_io/filesystem/path/concat/94063.cc: Likewise. * testsuite/27_io/filesystem/path/concat/path.cc: Likewise. * testsuite/27_io/filesystem/path/concat/strings.cc: Likewise. * testsuite/27_io/filesystem/path/construct/80762.cc: Likewise. * testsuite/27_io/filesystem/path/construct/90281.cc: Likewise. * testsuite/27_io/filesystem/path/construct/90634.cc: Likewise. * testsuite/27_io/filesystem/path/construct/copy.cc: Likewise. * testsuite/27_io/filesystem/path/construct/default.cc: Likewise. * testsuite/27_io/filesystem/path/construct/format.cc: Likewise. * testsuite/27_io/filesystem/path/construct/locale.cc: Likewise. * testsuite/27_io/filesystem/path/construct/range.cc: Likewise. * testsuite/27_io/filesystem/path/construct/string_view.cc: Likewise. * testsuite/27_io/filesystem/path/decompose/extension.cc: Likewise. * testsuite/27_io/filesystem/path/decompose/filename.cc: Likewise. * testsuite/27_io/filesystem/path/decompose/parent_path.cc: Likewise. * testsuite/27_io/filesystem/path/decompose/relative_path.cc: Likewise. * testsuite/27_io/filesystem/path/decompose/root_directory.cc: Likewise. * testsuite/27_io/filesystem/path/decompose/root_name.cc: Likewise. * testsuite/27_io/filesystem/path/decompose/root_path.cc: Likewise. * testsuite/27_io/filesystem/path/decompose/stem.cc: Likewise. * testsuite/27_io/filesystem/path/factory/u8path-char8_t.cc: Likewise. * testsuite/27_io/filesystem/path/factory/u8path.cc: Likewise. * testsuite/27_io/filesystem/path/generation/normal.cc: Likewise. * testsuite/27_io/filesystem/path/generation/normal2.cc: Likewise. * testsuite/27_io/filesystem/path/generation/proximate.cc: Likewise. * testsuite/27_io/filesystem/path/generation/relative.cc: Likewise. * testsuite/27_io/filesystem/path/generic/94242.cc: Likewise. * testsuite/27_io/filesystem/path/generic/generic_string.cc: Likewise. * testsuite/27_io/filesystem/path/generic/utf.cc: Likewise. * testsuite/27_io/filesystem/path/generic/wchar_t.cc: Likewise. * testsuite/27_io/filesystem/path/io/dr2989.cc: Likewise. * testsuite/27_io/filesystem/path/itr/components.cc: Likewise. * testsuite/27_io/filesystem/path/itr/traversal.cc: Likewise. * testsuite/27_io/filesystem/path/modifiers/clear.cc: Likewise. * testsuite/27_io/filesystem/path/modifiers/make_preferred.cc: Likewise. * testsuite/27_io/filesystem/path/modifiers/remove_filename.cc: Likewise. * testsuite/27_io/filesystem/path/modifiers/replace_extension.cc: Likewise. * testsuite/27_io/filesystem/path/modifiers/replace_filename.cc: Likewise. * testsuite/27_io/filesystem/path/modifiers/swap.cc: Likewise. * testsuite/27_io/filesystem/path/native/alloc.cc: Likewise. * testsuite/27_io/filesystem/path/native/string-char8_t.cc: Likewise. * testsuite/27_io/filesystem/path/native/string.cc: Likewise. * testsuite/27_io/filesystem/path/nonmember/append.cc: Likewise. * testsuite/27_io/filesystem/path/nonmember/cmp.cc: Likewise. * testsuite/27_io/filesystem/path/nonmember/hash_value.cc: Likewise. * testsuite/27_io/filesystem/path/query/empty.cc: Likewise. * testsuite/27_io/filesystem/path/query/empty_neg.cc: * testsuite/27_io/filesystem/path/query/has_extension.cc: Likewise. * testsuite/27_io/filesystem/path/query/has_filename.cc: Likewise. * testsuite/27_io/filesystem/path/query/has_parent_path.cc: Likewise. * testsuite/27_io/filesystem/path/query/has_relative_path.cc: Likewise. * testsuite/27_io/filesystem/path/query/has_root_directory.cc: Likewise. * testsuite/27_io/filesystem/path/query/has_root_name.cc: Likewise. * testsuite/27_io/filesystem/path/query/has_root_path.cc: Likewise. * testsuite/27_io/filesystem/path/query/has_stem.cc: Likewise. * testsuite/27_io/filesystem/path/query/is_absolute.cc: Likewise. * testsuite/27_io/filesystem/path/query/is_relative.cc: Likewise. * testsuite/experimental/filesystem/path/construct/string_view.cc: Likewise. 2021-05-10 Jonathan Wakely * testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc: Remove -std=gnu++17 from dg-options. * testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc: Likewise. * testsuite/20_util/specialized_algorithms/pstl/uninitialized_fill_destroy.cc: Likewise. * testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: Likewise. * testsuite/25_algorithms/pstl/alg_merge/merge.cc: Likewise. * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc: Likewise. * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc: Likewise. * testsuite/25_algorithms/pstl/alg_modifying_operations/fill.cc: Likewise. * testsuite/25_algorithms/pstl/alg_modifying_operations/generate.cc: Likewise. * testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc: Likewise. * testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc: Likewise. * testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc: Likewise. * testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc: Likewise. * testsuite/25_algorithms/pstl/alg_modifying_operations/remove_copy.cc: Likewise. * testsuite/25_algorithms/pstl/alg_modifying_operations/replace.cc: Likewise. * testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc: Likewise. * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc: Likewise. * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc: Likewise. * testsuite/25_algorithms/pstl/alg_modifying_operations/swap_ranges.cc: Likewise. * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_binary.cc: Likewise. * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_unary.cc: Likewise. * testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc: Likewise. * testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc: Likewise. * testsuite/25_algorithms/pstl/alg_nonmodifying/adjacent_find.cc: Likewise. * testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc: Likewise. * testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc: Likewise. * testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc: Likewise. * testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc: Likewise. * testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc: Likewise. * testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc: Likewise. * testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc: Likewise. * testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc: Likewise. * testsuite/25_algorithms/pstl/alg_nonmodifying/for_each.cc: Likewise. * testsuite/25_algorithms/pstl/alg_nonmodifying/mismatch.cc: Likewise. * testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc: Likewise. * testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc: Likewise. * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc: Likewise. * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc: Likewise. * testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc: Likewise. * testsuite/25_algorithms/pstl/alg_sorting/includes.cc: Likewise. * testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: Likewise. * testsuite/25_algorithms/pstl/alg_sorting/is_sorted.cc: Likewise. * testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc: Likewise. * testsuite/25_algorithms/pstl/alg_sorting/minmax_element.cc: Likewise. * testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc: Likewise. * testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc: Likewise. * testsuite/25_algorithms/pstl/alg_sorting/set.cc: Likewise. * testsuite/25_algorithms/pstl/alg_sorting/sort.cc: Likewise. * testsuite/25_algorithms/pstl/feature_test-2.cc: Likewise. * testsuite/25_algorithms/pstl/feature_test-3.cc: Likewise. * testsuite/25_algorithms/pstl/feature_test-4.cc: Likewise. * testsuite/25_algorithms/pstl/feature_test-5.cc: Likewise. * testsuite/25_algorithms/pstl/feature_test.cc: Likewise. * testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc: Likewise. * testsuite/26_numerics/pstl/numeric_ops/reduce.cc: Likewise. * testsuite/26_numerics/pstl/numeric_ops/scan.cc: Likewise. * testsuite/26_numerics/pstl/numeric_ops/transform_reduce.cc: Likewise. * testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc: Likewise. 2021-05-10 Jonathan Wakely * testsuite/20_util/scoped_allocator/69293_neg.cc: Add dg-error for additional errors in C++20. * testsuite/20_util/specialized_algorithms/memory_management_tools/destroy_neg.cc: Likewise. * testsuite/20_util/uses_allocator/69293_neg.cc: Likewise. * testsuite/27_io/filesystem/path/io/dr2989.cc: Likewise. 2021-05-10 Jonathan Wakely * testsuite/20_util/variant/compile.cc: Rename 'any' to avoid clash with std::any. 2021-05-07 Jonathan Wakely * include/std/istream (__rvalue_stream_extraction_t): Replace use of __rval_streamable. * include/std/ostream (__rvalue_stream_insertion_t): Likewise. (__rval_streamable): Remove. (_Require_derived_from_ios_base, __derived_from_ios_base): New helper for checking constraints. * testsuite/27_io/basic_istream/extractors_other/char/4.cc: Fix reference to the wrong subclause of the standard. * testsuite/27_io/basic_istream/extractors_other/wchar_t/4.cc: Likewise. * testsuite/27_io/basic_ostream/inserters_other/char/6.cc: Likewise. * testsuite/27_io/basic_ostream/inserters_other/wchar_t/6.cc: Likewise. * testsuite/27_io/basic_ostream/inserters_other/char/99692.cc: New test. * testsuite/27_io/filesystem/path/io/dr2989.cc: Adjust pruned errors. 2021-05-06 Jonathan Wakely * include/bits/stl_algobase.h (__copy_move, __copy_move_backward): Improve static_assert messages. * testsuite/25_algorithms/copy/58982.cc: Adjust expected output. * testsuite/25_algorithms/copy_n/58982.cc: Likewise. 2021-05-06 Patrick Palka * include/std/ranges (filter_view::_Iterator::base): Make the const& overload unconstrained and return a const reference as per LWG 3533. Make unconditionally noexcept. (transform_view::_Iterator::base): Likewise. (elements_view::_Iterator::base): Likewise. 2021-05-06 Patrick Palka * include/bits/stl_iterator.h (move_iterator::base): Make the const& overload unconstrained and return a const reference as per LWG 3391. Make unconditionally noexcept. (counted_iterator::base): Likewise. * testsuite/24_iterators/move_iterator/lwg3391.cc: New test. * testsuite/24_iterators/move_iterator/move_only.cc: Adjust has_member_base concept to decay-copy the result of base(). 2021-05-06 Jonathan Wakely * include/std/type_traits (remove_cvref_t): Define in terms of remove_cvref. * testsuite/20_util/remove_cvref/value.cc: Check alias. 2021-05-06 Jonathan Wakely Revert: 2021-05-05 Jonathan Wakely * include/std/charconv (__from_chars_alnum): Pass unsigned char to std::isdigit. 2021-05-05 Patrick Palka * include/bits/ranges_util.h (enable_borrowed_range): Remove constraints on this partial specialization. * include/std/ranges (enable_borrowed_range): Likewise. 2021-05-05 Patrick Palka * include/std/ranges (transform_view::_Iterator::iter_swap): Remove as per LWG 3520. (join_view::_Iterator::iter_swap): Add indirectly_swappable constraint as per LWG 3517. 2021-05-05 Jonathan Wakely * testsuite/20_util/function_objects/invoke/3.cc: Check feature test macro. * testsuite/20_util/function_objects/invoke/version.cc: New test. 2021-05-05 Jonathan Wakely * include/std/charconv (__from_chars_alnum): Pass unsigned char to std::isdigit. 2021-05-05 Corentin Gay * acinclude.m4: Add VxWorks-specific case for the configuration of ctypes. * configure: Regenerate. * config/locale/vxworks/ctype_members.cc: Add VxWorks-specific version. * config/os/vxworks/ctype_base.h: Adjust for VxWorks7+. * config/os/vxworks/ctype_configure_char.cc: Likewise. * config/os/vxworks/ctype_inline.h: Likewise. * testsuite/28_regex/traits/char/isctype.cc: Defines NEWLINE_IN_CLASS_BLANK if the target is VxWorks. * testsuite/28_regex/traits/wchar_t/isctype.cc: Likewise. 2021-05-04 Jonathan Wakely * include/std/future (promise::set_value): Check for existence of shared state before dereferncing it. (promise::set_exception, promise::set_value_at_thread_exit) (promise::set_exception_at_thread_exit): Likewise. (promise::set_value, promise::set_exception) (promise::set_value_at_thread_exit) (promise::set_exception_at_thread_exit): Likewise. (promise::set_value, promise::set_exception) (promise::set_value_at_thread_exit) (promise::set_exception_at_thread_exit): Likewise. * testsuite/30_threads/promise/members/at_thread_exit2.cc: Remove unused variable. 2021-05-04 Jonathan Wakely * include/bits/basic_string.h (basic_string(const CharT*, const A&)): Do not do arithmetic on null pointer. 2021-05-04 Jonathan Wakely * include/ext/pb_ds/detail/cc_hash_table_map_/cc_ht_map_.hpp (find_key_pointer(key_const_reference, false_type)) (find_key_pointer(key_const_reference, true_type)): Do not dereference null pointer. 2021-05-04 Jonathan Wakely * testsuite/20_util/from_chars/3.cc: Use unsigned type to avoid overflow. * testsuite/24_iterators/reverse_iterator/2.cc: Do not add non-zero value to null pointer. * testsuite/25_algorithms/copy_backward/move_iterators/69478.cc: Use past-the-end iterator for result. * testsuite/25_algorithms/move_backward/69478.cc: Likewise. * testsuite/25_algorithms/move_backward/93872.cc: Likewise. 2021-05-04 Jonathan Wakely PR libstdc++/100384 * include/std/variant (__get_t): New alias template yielding the return type of std::get on a variant. (__visit_result_t): New alias template yielding the result of std::visit. (__same_types): Move into namespace __detail::__variant. (__check_visitor_results): Likewise. Use __invoke_result_t and __get_t. (__check_visitor_result): Remove. (visit): Use __visit_result_t for return type. * testsuite/20_util/variant/100384.cc: New test. 2021-05-04 Jonathan Wakely * acinclude.m4 (GLIBCXX_ENABLE_INT128_FLOAT128): Remove checks for __int128 and rename to GLIBCXX_ENABLE_FLOAT128. * config.h.in: Regenerate. * configure: Regenerate. * configure.ac: Adjust to use GLIBCXX_ENABLE_FLOAT128. * include/bits/random.h (_Select_uint_least_t): Use __SIZEOF_INT128__ to decide whether to use __int128. * include/std/charconv (__to_chars_unsigned_type): Likewise. 2021-05-03 Gerald Pfeifer * doc/xml/manual/ctype.xml: Move unix.org reference to https. * doc/html/manual/facets.html: Regenerate. 2021-04-30 Patrick Palka * include/std/ranges (__detail::__non_propating_cache): Define as per P2328. (join_view): Remove constraints on the value and reference types of the wrapped iterator type as per P2328. (join_view::_Iterator::_M_satisfy): Adjust as per P2328. (join_view::_Iterator::operator++): Likewise. (join_view::_M_inner): Use __non_propating_cache as per P2328. Remove now-redundant use of __maybe_present_t. * testsuite/std/ranges/adaptors/join.cc: Include . (test10): New test. 2021-04-30 Jonathan Wakely * include/bits/basic_string.h (__cpp_lib_constexpr_string): Only define for C++17 and later. * include/std/version (__cpp_lib_semaphore): Fix condition to match the one in . 2021-04-30 Jonathan Wakely * acinclude.m4 (GLIBCXX_CHECK_INT64_T): Delete. * config.h.in: Regenerate. * configure: Regenerate. * configure.ac: Do not use GLIBCXX_CHECK_INT64_T. * include/bits/postypes.h: Remove include of and definition/undefinition of the __STDC_LIMIT_MACROS and __STDC_CONSTANT_MACROS macros. (streamoff): Use __INT64_TYPE__ if defined. 2021-04-30 Patrick Palka * include/std/ranges (split_view::_InnerIter::operator++): Depend on _Base instead of _Vp directly, as per LWG 3532. 2021-04-30 Patrick Palka * include/bits/ranges_util.h (subrange::subrange): Avoid list-initialization in delegating constructor. * include/std/ranges (single_view): Replace implicit guide with explicit deduction guide that decays its argument. (_Single::operator()): Avoid CTAD when constructing the single_view object. (_Iota::operator()): Avoid list-initialization. (__detail::__can_filter_view, _Filter::operator()): Likewise. (__detail::__can_transform_view, _Transform::operator()): Likewise. (take_view::begin): Likewise. (__detail::__can_take_view, _Take::operator()): Likewise. (__detail::__can_take_while_view, _TakeWhile::operator()): Likewise. (__detail::__can_drop_view, _Drop::operator()): Likewise. (__detail::__can_drop_while_view, _DropWhile::operator()): Likewise. (split_view::split_view): Use views::single when initializing _M_pattern. (__detail::__can_split_view, _Split::operator()): Avoid list-initialization. (_Counted::operator()): Likewise. * testsuite/std/ranges/p2367.cc: New test. 2021-04-30 Jonathan Wakely PR libstdc++/60497 * include/bits/basic_ios.tcc (basic_ios::copyfmt): use std::addressof. * include/bits/basic_string.tcc (basic_string::swap) (basic_string::assign): Likewise. * include/bits/deque.tcc (deque::operator=(const deque&)): Likewise. * include/bits/stl_tree.h (_Rb_tree::operator=(const * _Rb_tree&)): Likewise. * include/bits/vector.tcc (vector::operator=(const vector&)): Likewise. 2021-04-30 Jonathan Wakely * include/std/istream (operator>>(Istream&&, x&)): Simplify, as per LWG 1203. * include/std/ostream (operator<<(Ostream&&, const x&)): Likewise. * testsuite/27_io/basic_istream/extractors_character/char/lwg2499_neg.cc: Adjust dg-error pattern. * testsuite/27_io/basic_istream/extractors_character/wchar_t/lwg2499_neg.cc: Likewise. * testsuite/27_io/basic_istream/extractors_other/char/4.cc: Define is_extractable trait to replace std::__is_extractable. Make it work with rvalue streams as well as lvalues, to replace f() and g() helper functions. * testsuite/27_io/basic_istream/extractors_other/wchar_t/4.cc: Likewise. * testsuite/27_io/basic_ostream/inserters_other/char/6.cc: Define is_insertable trait to replace std::__is_insertable. Make it work with rvalue streams as well as lvalues, to replace f() and g() helper functions. * testsuite/27_io/basic_ostream/inserters_other/wchar_t/6.cc: Likewise. * testsuite/27_io/filesystem/path/io/dr2989.cc: Prune additional errors from new constraints. * testsuite/27_io/rvalue_streams-2.cc: Remove PR 80675 checks, which are no longer expected to compile. * testsuite/27_io/rvalue_streams.cc: Adjust existing test. Verify LWG 1203 changes. 2021-04-30 Jonathan Wakely PR libstdc++/100285 * include/experimental/socket (__basic_socket_impl::set_option) (__basic_socket_impl::get_option) [!_GLIBCXX_HAVE_SYS_SOCKET_H]: Just set error code. * testsuite/experimental/net/socket/socket_base.cc: CHeck for not . 2021-04-30 Jonathan Wakely PR libstdc++/100180 PR libstdc++/100286 PR libstdc++/100351 * testsuite/experimental/net/internet/address/v4/comparisons.cc: Use new effective-target keyword. * testsuite/experimental/net/internet/address/v4/cons.cc: Likewise. * testsuite/experimental/net/internet/address/v4/creation.cc: Likewise. * testsuite/experimental/net/internet/address/v4/members.cc: Likewise. * testsuite/experimental/net/internet/address/v6/members.cc: Likewise. * testsuite/experimental/net/internet/resolver/base.cc: Likewise. * testsuite/experimental/net/internet/resolver/ops/lookup.cc: Likewise. * testsuite/experimental/net/internet/resolver/ops/reverse.cc: Likewise. * testsuite/experimental/net/internet/socket/opt.cc: Likewise. * testsuite/experimental/net/internet/tcp.cc: Likewise. * testsuite/experimental/net/internet/udp.cc: Likewise. * testsuite/lib/libstdc++.exp (check_effective_target_net_ts_ip): New proc to check net_ts_ip et. 2021-04-28 Jonathan Wakely PR libstdc++/97930 * testsuite/20_util/pair/requirements/structural.cc: New test. 2021-04-28 Jonathan Wakely * include/bits/stl_pair.h (pair) [__cplusplus > 202002]: Add new definitions for constructors and assignment operators using concepts for constraints. * testsuite/20_util/pair/cons/99957.cc: Disable for C++20 and later. * testsuite/20_util/pair/cons/explicit_construct.cc: Adjust expected error messages to also match C++20 errors. 2021-04-28 Jonathan Wakely PR libstdc++/99957 * include/bits/stl_pair.h (_PCC::_MoveCopyPair, _PCC::_CopyMovePair): Combine and replace with ... (_PCC::_DeprConsPair): New SFINAE helper function. (pair): Merge preprocessor blocks so that all C++03 members are defined together at the end. (pair::pair(const _T1&, _U2&&), pair::pair(_U1&&, const _T2&)): Replace _T1 and _T2 parameters with __null_ptr_constant and adjust constraints. * testsuite/20_util/pair/40925.cc: Use nullptr instead of 0. * testsuite/20_util/pair/cons/explicit_construct.cc: Likewise. * testsuite/20_util/pair/cons/99957.cc: New test. 2021-04-28 Jonathan Wakely * include/bits/basic_string.h (__cpp_lib_constexpr_string): Define. * include/std/version (__cpp_lib_constexpr_string): Define. * testsuite/21_strings/char_traits/requirements/constexpr_functions_c++17.cc: Check for __cpp_lib_constexpr_string. * testsuite/21_strings/char_traits/requirements/constexpr_functions_c++20.cc: Likewise. * testsuite/21_strings/char_traits/requirements/version.cc: New test. 2021-04-28 Jonathan Wakely * doc/Makefile.am (stamp-pdf-doxygen): Improve comment about dealing with errors. Use '@' to prevent shell command being echoed. * doc/Makefile.in: Regenerate. 2021-04-28 Jonathan Wakely PR libstdc++/100298 * include/bits/std_thread.h (thread::hardware_concurrency): Add missing noexcept to inline definition for non-gthreads targets. 2021-04-28 Patrick Palka PR libstdc++/100187 PR libstdc++/100237 PR libstdc++/100249 PR libstdc++/100287 * include/bits/ranges_algo.h (__search_n_fn::operator()): Give the __value_comp lambda an explicit bool return type. (__is_permutation_fn::operator()): Give the __proj_scan local variable auto&& return type. Give the __comp_scan lambda an explicit bool return type. (__remove_fn::operator()): Give the __pred lambda an explicit bool return type. (__partition_fn::operator()): Don't std::move __first twice when returning an empty subrange. (__min_fn::operator()): Don't std::move __comp. (__max_fn::operator()): Likewise. (__minmax_fn::operator()): Likewise. 2021-04-27 Patrick Palka PR libstdc++/100290 * include/std/ranges (join_view::_Iterator::operator++): Correct the return type of the lambda to avoid returning a copy of _M_parent->_M_inner. * testsuite/std/ranges/adaptors/join.cc (test10): New test. 2021-04-27 Jakub Jelinek Revert: 2021-04-22 Jakub Jelinek PR target/100182 * testsuite/29_atomics/atomic_float/1.cc: Add dg-xfail-run-if for ia32. * testsuite/29_atomics/atomic_float/wait_notify.cc: Add dg-skip-if for ia32. 2021-04-27 Jonathan Wakely * include/experimental/internet (address_v6::bytes_type): Adjust formatting. (basic_endpoint): Define _M_is_v6() to put all checks for AF_INET6 in one place. (basic_endpoint::resize): Simplify. (operator==(const tcp&, const tcp&)): Add constexpr and noexcept. (operator!=(const tcp&, const tcp&)): Likewise. (operator==(const udp&, const udp&)): Likewise. (operator!=(const udp&, const udp&)): Likewise. * testsuite/experimental/net/internet/tcp.cc: New test. * testsuite/experimental/net/internet/udp.cc: New test. 2021-04-27 Jonathan Wakely PR libstdc++/100286 * include/experimental/internet (resolver_errc, resolver_category()) (make_error_code, make_error_condition): Define unconditionally, only make enumerators and use of gai_strerror depend on the availability of . (address_v4::to_string): Use correct constant for string length. (address_v4::to_string, address_v6::to_string): Define unconditionally, throw if unsupported. (make_address_v4, make_address_v6): Define unconditionally. Return an error if unsupported. (tcp, udp, v6_only, unicast::hops, multicast::*): Define conditionally, * testsuite/experimental/net/internet/socket/opt.cc: Check for and before using types from namespace net::ip. 2021-04-27 Jonathan Wakely PR libstdc++/100285 * include/experimental/internet (resolver_base::flags): Define overloaded operators as hidden friends. * include/experimental/socket (socket_base::message_flags): Likewise. 2021-04-26 Jonathan Wakely * include/experimental/internet (tcp::no_delay, v6_only) (unicast::hops, multicast::hops, multicast::enable_loopback): Change access of base class and static data members. Add using-declaration for __socket_crtp::operator=(_Tp). (multicast::__mcastopt): New type. (multicast::join_group, multicast::leave_group): Derive from __mcastopt for common implementation. * include/experimental/socket: Add comment. * testsuite/experimental/net/internet/socket/opt.cc: New test. * testsuite/experimental/net/socket/socket_base.cc: Check for protected constructor/destructor of socket_base. Check for explicit constructors of socket option classes. 2021-04-26 Jonathan Wakely * include/experimental/bits/net.h (__socket_base): Add bool template parameter to allow BooleanSocketOption and IntegerSocketOption to have different __socket_base base classes. (__socket_base): Adjust base class. (__socket_base): Add partial specialization. (__socket_crtp::operator=(_Tp)): Add noexcept-specifier. * include/experimental/socket (socket_base::broadcast) (socket_base::debug, socket_base::do_not_route) (socket_base::keep_alive, socket_base::linger) (socket_base::out_of_band_inline) (socket_base::receive_buffer_size) (socket_base::receive_low_watermark) (socket_base::reuse_address, socket_base::send_buffer_size) (socket_base::send_low_watermark): Add using-declaration for __socket_crtp::operator=(_Tp). * testsuite/experimental/net/socket/socket_base.cc: Check properties of socket option types. 2021-04-26 Jonathan Wakely * include/experimental/internet (resolver_base::flags): Remove enumerators. Initialize constants directly with desired values. Make all operators constexpr and noexcept. * testsuite/experimental/net/internet/resolver/base.cc: Use __gnu_test::test_bitmask_values for bitmask type. Check construction and destruction is protected. 2021-04-26 Jonathan Wakely * include/bits/semaphore_base.h: Include and . 2021-04-26 Jonathan Wakely PR libstdc++/100259 * include/experimental/internet (net::ip::make_error_code) (net::ip::make_error_condition, net::ip::make_network_v4) (net::ip::operator==(const udp&, const udp&)): Add 'inline'. 2021-04-24 David Edelsohn * testsuite/lib/dg-options.exp (atomic_link_flags): New. (add_options_for_libatomic): Use atomic_link_flags. 2021-04-23 Jonathan Wakely PR libstdc++/100180 * include/experimental/io_context (io_context): Define dummy_pollfd type so that most member functions still compile without and struct pollfd. 2021-04-23 Jonathan Wakely * include/experimental/io_context (io_context::async_wait): Add comment. * include/experimental/socket (basic_socket::async_connect): Cast wait_type constant to int. (basic_datagram_socket::async_receive): Likewise. (basic_datagram_socket::async_receive_from): Likewise. (basic_datagram_socket::async_send): Likewise. (basic_datagram_socket::async_send_to): Likewise. (basic_stream_socket::async_receive): Likewise. (basic_stream_socket::async_send): Likewise. Use io_context parameter directly, instead of via an executor. (basic_socket_acceptor::async_accept): Likewise. 2021-04-23 Jonathan Wakely * include/experimental/socket (socket_base::shutdown_type): (socket_base::wait_type, socket_base::message_flags): Remove enumerators. Initialize constants directly with desired values. (socket_base::message_flags): Make all operators constexpr and noexcept. * testsuite/util/testsuite_common_types.h (test_bitmask_values): New test utility. * testsuite/experimental/net/socket/socket_base.cc: New test. 2021-04-22 David Edelsohn * config/os/aix/atomicity.h: Delete. 2021-04-22 Jonathan Wakely * include/bits/atomic_timed_wait.h (__cond_wait_until_impl): Handle system_clock as well as steady_clock. * testsuite/30_threads/semaphore/try_acquire_for.cc: Re-enable. * testsuite/30_threads/semaphore/try_acquire_until.cc: Re-enable. 2021-04-22 Jonathan Wakely * testsuite/30_threads/semaphore/try_acquire_posix.cc: Add options for libatomic. 2021-04-22 Jonathan Wakely * config/os/gnu-linux/os_defines.h: Fix type in comment. 2021-04-22 Jonathan Wakely PR libstdc++/99006 * include/bits/shared_ptr.h (allocate_shared): Assert that _Tp is not an array type. * include/bits/shared_ptr_base.h (__allocate_shared): Likewise. * testsuite/20_util/shared_ptr/creation/99006.cc: New test. 2021-04-22 Thomas Rodgers * include/bits/atomic_wait.h: Always notify waiters in the case of 'bare' address notification. 2021-04-22 Jakub Jelinek PR target/100182 * testsuite/29_atomics/atomic_float/1.cc: Add dg-xfail-run-if for ia32. * testsuite/29_atomics/atomic_float/wait_notify.cc: Add dg-skip-if for ia32. 2021-04-22 Jonathan Wakely PR libstdc++/100179 * include/bits/semaphore_base.h: Remove #error. * include/std/semaphore: Do not define anything unless one of the implementations is available. 2021-04-21 Thomas Rodgers * include/bits/semaphore_base.h: Always reload __old in __atomic_semaphore::_S_do_try_acquire(). * testsuite/30_threads/stop_token/stop_callback/destroy.cc: re-enable testcase. 2021-04-21 Philippe Blain Jonathan Wakely PR libstdc++/99453 * python/Makefile.am: Install libstdc++*-gdb.py more robustly. * python/Makefile.in: Regenerate. 2021-04-21 Thomas Rodgers * include/bits/semaphore_base.h: Add missing _M_try_acquire() member to __platform_wait. 2021-04-21 Jonathan Wakely * include/std/latch: Replace tab characters in license text. * include/std/semaphore: Likewise. 2021-04-21 Jakub Jelinek PR libstdc++/100164 * acinclude.m4: For POSIX semaphores AC_DEFINE HAVE_POSIX_SEMAPHORE rather than _GLIBCXX_HAVE_POSIX_SEMAPHORE. * configure: Regenerated. * config.h.in: Regenerated. 2021-04-20 Jonathan Wakely * testsuite/30_threads/semaphore/try_acquire_for.cc: Disable test for targets not using futexes for semaphores. * testsuite/30_threads/semaphore/try_acquire_until.cc: Likewise. * testsuite/30_threads/stop_token/stop_callback/destroy.cc: Disable for all targets. 2021-04-20 Thomas Rodgers * include/Makefile.am: Add new header. * include/Makefile.in: Regenerate. * include/bits/this_thread_sleep.h: New file. * include/bits/atomic_base.h: Adjust all calls to __atomic_wait/__atomic_notify for new call signatures. * include/bits/atomic_timed_wait.h: Extensive rewrite. * include/bits/atomic_wait.h: Likewise. * include/bits/semaphore_base.h: Adjust all calls to __atomic_wait/__atomic_notify for new call signatures. * include/std/atomic: Likewise. * include/std/barrier: Likewise. * include/std/latch: Likewise. * include/std/semaphore: Likewise. * include/std/thread (this_thread::sleep_for) (this_thread::sleep_until): Move to new header. * testsuite/29_atomics/atomic/wait_notify/bool.cc: Simplify test. * testsuite/29_atomics/atomic/wait_notify/generic.cc: Likewise. * testsuite/29_atomics/atomic/wait_notify/pointers.cc: Likewise. * testsuite/29_atomics/atomic_flag/wait_notify/1.cc: Likewise. * testsuite/29_atomics/atomic_float/wait_notify.cc: Likewise. * testsuite/29_atomics/atomic_integral/wait_notify.cc: Likewise. * testsuite/29_atomics/atomic_ref/wait_notify.cc: Likewise. 2021-04-20 Patrick Palka PR libstdc++/95983 * include/bits/stl_iterator.h (__detail::__move_iter_cat): Define. (move_iterator): Derive from the above in C++20 in order to conditionally define iterator_category as per P2259. (move_iterator::__base_cat): No longer used, so remove. (move_iterator::iterator_category): Remove in C++20. (__detail::__common_iter_use_postfix_proxy): Define. (common_iterator::_Proxy): Rename to ... (common_iterator:__arrow_proxy): ... this. (common_iterator::__postfix_proxy): Define as per P2259. (common_iterator::operator->): Adjust. (common_iterator::operator++): Adjust as per P2259. (iterator_traits::_S_iter_cat): Define. (iterator_traits::iterator_category): Change as per P2259. (__detail::__counted_iter_value_type): Define. (__detail::__counted_iter_concept): Define. (__detail::__counted_iter_cat): Define. (counted_iterator): Derive from the above three classes in order to conditionally define value_type, iterator_concept and iterator category respectively as per P2259. (counted_iterator::operator->): Define as per P2259. (incrementable_traits): Remove as per P2259. (iterator_traits): Adjust as per P2259. * include/std/ranges (__detail::__iota_view_iter_cat): Define. (iota_view::_Iterator): Derive from the above in order to conditionally define iterator_category as per P2259. (iota_view::_S_iter_cat): Rename to ... (iota_view::_S_iter_concept): ... this. (iota_view::iterator_concept): Use it to apply LWG 3291 changes. (iota_view::iterator_category): Remove. (__detail::__filter_view_iter_cat): Define. (filter_view::_Iterator): Derive from the above in order to conditionally define iterator_category as per P2259. (filter_view::_Iterator): Move to struct __filter_view_iter_cat. (filter_view::_Iterator::iterator_category): Remove. (transform_view::_Base): Define. (transform_view::__iter_cat): Define. (transform_view::_Iterator): Derive from the above in order to conditionally define iterator_category as per P2259. (transform_view::_Iterator::_Base): Just alias transform_view::_Base. (transform_view::_Iterator::_S_iter_cat): Move to struct transform_view::__iter_cat. (transform_view::_Iterator::iterator_category): Remove. (transform_view::_Sentinel::_Base): Just alias transform_view::_Base. (join_view::_Base): Define. (join_view::_Outer_iter): Define. (join_view::_Inner_iter): Define. (join_view::_S_ref_is_glvalue): Define. (join_view::__iter_cat): Define. (join_view::_Iterator): Derive from it in order to conditionally define iterator_category as per P2259. (join_view::_Iterator::_Base): Just alias join_view::_Base. (join_view::_Iterator::_S_ref_is_glvalue): Just alias join_view::_S_ref_is_glvalue. (join_view::_Iterator::_S_iter_cat): Move to struct transform_view::__iter_cat. (join_view::_Iterator::_Outer_iter): Just alias join_view::_Outer_iter. (join_view::_Iterator::_Inner_iter): Just alias join_view::_Inner_iter. (join_view::_Iterator::iterator_category): Remove. (join_view::_Sentinel::_Base): Just alias join_view::_Base. (__detail::__split_view_outer_iter_cat): Define. (__detail::__split_view_inner_iter_cat): Define. (split_view::_Base): Define. (split_view::_Outer_iter): Derive from __split_view_outer_iter_cat in order to conditionally define iterator_category as per P2259. (split_view::_Outer_iter::iterator_category): Remove. (split_view::_Inner_iter): Derive from __split_view_inner_iter_cat in order to conditionally define iterator_category as per P2259. (split_view::_Inner_iter::_S_iter_cat): Move to __split_view_inner_iter_cat. (split_view::_Inner_iter::iterator_category): Remove. (elements_view::_Base): Define. (elements_view::__iter_cat): Define. (elements_view::_Iterator): Derive from the above in order to conditionall define iterator_category as per P2259. (elements_view::_Iterator::_Base): Just alias elements_view::_Base. (elements_view::_Iterator::_S_iter_concept) (elements_view::_Iterator::iterator_concept): Define as per P2259. (elements_view::_Iterator::iterator_category): Remove. (elements_view::_Sentinel::_Base): Just alias elements_view::_Base. * testsuite/24_iterators/headers/iterator/synopsis_c++20.cc: Adjust constraints on iterator_traits. * testsuite/std/ranges/p2259.cc: New test. 2021-04-20 Jonathan Wakely PR libstdc++/100146 * include/std/charconv (__cpp_lib_to_chars): Define conditionally. * include/std/version (__cpp_lib_to_chars): Likewise.. * testsuite/20_util/from_chars/4.cc: Only check feature test macro, not _GLIBCXX_HAVE_USELOCALE. * testsuite/20_util/from_chars/5.cc: Likewise. * testsuite/20_util/from_chars/6.cc: Likewise. * testsuite/20_util/to_chars/long_double.cc: Likewise. 2021-04-20 Jakub Jelinek * testsuite/util/testsuite_abi.cc (compare_symbols): If any symbol versions with _IEEE128_ substring are found, set ieee_version_found to true. Ignore missing symbols with _IEEE128_ in version name if !ieee_version_found. Use i->first as version_name instead of i->second.version_name if the latter is empty. * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update. 2021-04-19 H.J. Lu * config/abi/post/x86_64-linux-gnu/x32/baseline_symbols.txt: Updated. 2021-04-17 Jakub Jelinek * config/abi/post/powerpc-linux-gnu/baseline_symbols.txt: Update. * config/abi/post/powerpc64-linux-gnu/32/baseline_symbols.txt: Update. 2021-04-17 Jakub Jelinek * 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/s390x-linux-gnu/baseline_symbols.txt: Update. * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update. 2021-04-15 Jonathan Wakely * testsuite/lib/dg-options.exp (add_options_for_libatomic): Also add libatomic options for 32-bit sparc*-*-linux-gnu. 2021-04-15 Jonathan Wakely PR libstdc++/96657 * libsupc++/Makefile.am: Add atomicity.cc here. * src/c++98/Makefile.am: Remove it from here. * libsupc++/Makefile.in: Regenerate. * src/c++98/Makefile.in: Regenerate. * testsuite/18_support/exception_ptr/96657.cc: New test. 2021-04-13 Jonathan Wakely PR libstdc++/100060 * include/std/bit: Only include for hosted build, use otherwise. 2021-04-13 Jonathan Wakely * doc/xml/manual/backwards_compatibility.xml: Remove porting notes for libg++ and libstdc++-v2, and bibliography. * doc/html/*: Regenerated. 2021-04-12 Jonathan Wakely PR libstdc++/100044 * include/bits/ranges_util.h (__detail::__iterator_sentinel_pair): Remove helper concept. (subrange(_Pr), subrange(Pr, __make_unsigned_like<...>)): Remove deduction guides, as per LWG 3404. * testsuite/std/ranges/subrange/lwg3282_neg.cc: Check that class template argument deduction fails. 2021-04-12 Jonathan Wakely * testsuite/26_numerics/random/linear_congruential_engine/requirements/non_uint_neg.cc: Adjust expected error for C++20 mode. * testsuite/tr1/5_numerical_facilities/random/linear_congruential/requirements/non_uint_neg.cc: Likewise. 2021-04-12 Jonathan Wakely PR libstdc++/99995 * testsuite/17_intro/headers/c++1998/49745.cc: Include all standard headers and XFAIL for effective-target c++20. 2021-04-09 François Dumont PR libstdc++/99402 * include/debug/helper_functions.h (__can_advance(_InputIterator, const std::pair<_Diff, _Distance_precision>&, int)): New. (__can_advance(const _Safe_iterator<>&, const std::pair<_Diff, _Distance_precision>&, int)): New. * include/debug/macros.h (__glibcxx_check_can_increment_dist): New, use latter. (__glibcxx_check_can_increment_range): Adapt to use latter. (__glibcxx_check_can_decrement_range): Likewise. * include/debug/safe_iterator.h (_Safe_iterator<>::_M_can_advance(const std::pair<_Diff, _Distance_precision>&, int)): New. (__can_advance(const _Safe_iterator<>&, const std::pair<_Diff, _Distance_precision>&, int)): New. * include/debug/safe_iterator.tcc (_Safe_iterator<>::_M_can_advance(const std::pair<_Diff, _Distance_precision>&, int)): New. (_Safe_iterator<>::_M_valid_range(const _Safe_iterator<>&, std::pair&, bool)): Adapt for __dp_sign_max_size. (__copy_move_a): Adapt to use __glibcxx_check_can_increment_dist. (__copy_move_backward_a): Likewise. (__equal_aux): Likewise. * include/debug/stl_iterator.h (__can_advance(const std::reverse_iterator<>&, const std::pair<_Diff, _Distance_precision>&, int)): New. (__can_advance(const std::move_iterator<>&, const std::pair<_Diff, _Distance_precision>&, int)): New. * testsuite/25_algorithms/copy/debug/99402.cc: New test. 2021-04-09 Jonathan Wakely PR libstdc++/99985 * include/bits/hashtable.h (_Hashtable::_S_nothrow_move()): Fix to be a valid constexpr function in C++11. * testsuite/23_containers/unordered_set/cons/99985.cc: New test. 2021-04-09 Jonathan Wakely * include/bits/fs_fwd.h: Fix doxygen group command. * include/bits/streambuf_iterator.h: Likewise. * include/bits/uses_allocator_args.h: Likewise. * include/std/memory: Likewise. * include/tr1/complex: Likewise. 2021-04-08 Jonathan Wakely * include/bits/basic_string.h: Tweak doxygen comment. 2021-04-08 Patrick Palka * include/std/ranges (__detail::find): Define. (split_view::_OuterIter::operator++): Apply proposed resolution of LWG 3505. * testsuite/std/ranges/adaptors/split.cc (test10): New test. 2021-04-08 Patrick Palka * include/std/ranges (__detail::find_if): Simplify. (__detail::find_if_not): Likewise. (__detail::min): Remove. (__detail::mismatch): Simplify. (take_view::size): Use std::min instead of __detail::min. 2021-04-08 Patrick Palka * include/std/ranges (__detail::__returnable_element): New concept. (elements_view): Use this concept in its constraints. Add missing private access specifier. (elements_view::_S_get_element): Define as per LWG 3502. (elements_view::operator*, elements_view::operator[]): Use _S_get_element. (elements_view::operator++): Remove unnecessary constraint as per LWG 3492. * testsuite/std/ranges/adaptors/elements.cc (test05): New test. 2021-04-08 Jonathan Wakely * doc/Makefile.am (stamp-pdf-doxygen): Also grep for out-of-memory error in log file. * doc/Makefile.in: Regenerate. 2021-04-08 Jonathan Wakely * configure: Regenerate. 2021-04-08 Jonathan Wakely * include/bits/random.h: Fix doxygen group commands. * include/bits/regex_constants.h: Likewise. * include/tr1/random.h: Likewise. 2021-04-08 Jonathan Wakely * include/bits/hashtable.h (_Hashtable::_S_nothrow_move()): New function to determine noexcept-specifier for move constructors. (_Hashtable): Use _S_nothrow_move() on move constructors. * testsuite/23_containers/unordered_map/cons/noexcept_move_construct.cc: Correct static assertion message. * testsuite/23_containers/unordered_multimap/cons/noexcept_move_construct.cc: Likewise. * testsuite/23_containers/unordered_multiset/cons/noexcept_move_construct.cc: Likewise. * testsuite/23_containers/unordered_set/cons/noexcept_move_construct.cc: Likewise. 2021-04-08 Patrick Palka PR libstdc++/98384 * testsuite/20_util/to_chars/long_double.cc: Don't run the test on targets without a large long double. XFAIL the execution on targets with a non-conforming printf. 2021-04-08 Patrick Palka PR libstdc++/99433 * include/std/ranges (__adaptor::__maybe_refwrap): Remove. (__adaptor::__adaptor_invocable): New concept. (__adaptor::__adaptor_partial_app_viable): New concept. (__adaptor::_RangeAdaptorClosure): Rewrite, turning it into a non-template base class. (__adaptor::_RangeAdaptor): Rewrite, turning it into a CRTP base class template. (__adaptor::_Partial): New class template that represents partial application of a range adaptor non-closure. (__adaptor::__pipe_invocable): New concept. (__adaptor::_Pipe): New class template. (__detail::__can_ref_view): New concept. (__detail::__can_subrange): New concept. (all): Replace the lambda here with ... (_All): ... this functor. Add appropriate constraints. (__detail::__can_filter_view): New concept. (filter, _Filter): As in all/_All. (__detail::__can_transform): New concept. (transform, _Transform): As in all/_All. (__detail::__can_take_view): New concept. (take, _Take): As in all/_All. (__detail::__can_take_while_view): New concept. (take_while, _TakeWhile): As in all/_All. (__detail::__can_drop_view): New concept. (drop, _Drop): As in all/_All. (__detail::__can_drop_while_view): New concept. (drop_while, _DropWhile): As in all/_All. (__detail::__can_join_view): New concept. (join, _Join): As in all/_All. (__detail::__can_split_view): New concept. (split, _Split): As in all/_All. Rename template parameter _Fp to _Pattern. (__detail::__already_common): New concept. (__detail::__can_common_view): New concept. (common, _Common): As in all/_All. (__detail::__can_reverse_view): New concept. (reverse, _Reverse): As in all/_All. (__detail::__can_elements_view): New concept. (elements, _Elements): As in all/_All. (keys, values): Adjust. * testsuite/std/ranges/adaptors/99433.cc: New test. * testsuite/std/ranges/adaptors/all.cc: No longer expect that adding empty range adaptor closure objects to a pipeline doesn't increase the size of the pipeline. (test05): New test. * testsuite/std/ranges/adaptors/common.cc (test03): New test. * testsuite/std/ranges/adaptors/drop.cc (test09): New test. * testsuite/std/ranges/adaptors/drop_while.cc (test04): New test. * testsuite/std/ranges/adaptors/elements.cc (test04): New test. * testsuite/std/ranges/adaptors/filter.cc (test06): New test. * testsuite/std/ranges/adaptors/join.cc (test09): New test. * testsuite/std/ranges/adaptors/p2281.cc: New test. * testsuite/std/ranges/adaptors/reverse.cc (test07): New test. * testsuite/std/ranges/adaptors/split.cc (test01, test04): Adjust. (test09): New test. * testsuite/std/ranges/adaptors/split_neg.cc (test01): Adjust expected error message. (test02): Likewise. Extend test. * testsuite/std/ranges/adaptors/take.cc (test06): New test. * testsuite/std/ranges/adaptors/take_while.cc (test05): New test. * testsuite/std/ranges/adaptors/transform.cc (test07, test08): New test. 2021-04-08 Jonathan Wakely * include/std/string_view: Adjust Doxygen @file comment. 2021-04-08 Jonathan Wakely * include/std/type_traits (is_scoped_enum): Constrain partial specialization to not match incomplete enum types. Use a requires-expression instead of instantiating is_convertible. (is_scoped_enum): Add as workaround for PR c++/99968. * testsuite/20_util/is_scoped_enum/value.cc: Check with incomplete types and opaque-enum-declarations. 2021-04-07 Jonathan Wakely PR libstdc++/99805 * src/c++17/fs_path.cc (path::_M_split_cmpts): Do not call non-const member on _M_pathname, to avoid copy-on-write. * testsuite/27_io/filesystem/path/decompose/parent_path.cc: Check construction from strings that might be shared. 2021-04-06 Jonathan Wakely * include/bits/move.h (forward, move, move_if_noexcept) (addressof): Add _GLIBCXX_NODISCARD. * include/bits/ranges_cmp.h (identity::operator()): Add nodiscard attribute. * include/c_global/cstddef (to_integer): Likewise. * include/std/bit (bit_cast): Likewise. * include/std/utility (as_const, to_underlying): Likewise. 2021-04-06 Jonathan Wakely * include/bits/move.h (forward): Change static_assert message to be unambiguous about what must be true. * testsuite/20_util/forward/c_neg.cc: Adjust dg-error. * testsuite/20_util/forward/f_neg.cc: Likewise. 2021-04-06 Jonathan Wakely * include/bits/alloc_traits.h: Use markdown for code font. * include/bits/basic_string.h: Fix @param names. * include/bits/max_size_type.h: Remove period after @file. * include/bits/regex.h: Fix duplicate @retval names, and rename. * include/ext/pb_ds/detail/priority_queue_base_dispatch.hpp: Add group open to match existing group close. * include/ext/pb_ds/priority_queue.hpp: Add blank line before group open. 2021-04-06 Jonathan Wakely * include/bits/atomic_base.h: Fix doxygen group close. * include/bits/basic_ios.h: Likewise. * include/bits/forward_list.h: Likewise. * include/bits/fs_dir.h: Likewise. * include/bits/fs_ops.h: Likewise. * include/bits/fs_path.h: Likewise. * include/bits/functional_hash.h: Likewise. * include/bits/gslice.h: Likewise. * include/bits/gslice_array.h: Likewise. * include/bits/hashtable_policy.h: Likewise. * include/bits/indirect_array.h: Likewise. * include/bits/locale_classes.h: Likewise. * include/bits/locale_facets.h: Likewise. * include/bits/locale_facets_nonio.h: Likewise. * include/bits/mask_array.h: Likewise. * include/bits/refwrap.h: Likewise. * include/bits/regex.h: Likewise. * include/bits/regex_automaton.h: Likewise. * include/bits/regex_compiler.h: Likewise. * include/bits/regex_constants.h: Likewise. * include/bits/regex_error.h: Likewise. * include/bits/regex_executor.h: Likewise. * include/bits/regex_scanner.h: Likewise. * include/bits/shared_ptr.h: Likewise. * include/bits/shared_ptr_atomic.h: Likewise. * include/bits/shared_ptr_base.h: Likewise. * include/bits/slice_array.h: Likewise. * include/bits/specfun.h: Likewise. * include/bits/std_function.h: Likewise. * include/bits/std_mutex.h: Likewise. * include/bits/stl_deque.h: Likewise. * include/bits/stl_iterator.h: Likewise. * include/bits/stl_iterator_base_types.h: Likewise. * include/bits/stl_map.h: Likewise. * include/bits/stl_multimap.h: Likewise. * include/bits/stl_multiset.h: Likewise. * include/bits/stl_numeric.h: Likewise. * include/bits/stl_pair.h: Likewise. * include/bits/stl_set.h: Likewise. * include/bits/stl_uninitialized.h: Likewise. * include/bits/stream_iterator.h: Likewise. * include/bits/streambuf_iterator.h: Likewise. * include/bits/unique_ptr.h: Likewise. * include/bits/unordered_map.h: Likewise. * include/bits/unordered_set.h: Likewise. * include/decimal/decimal: Likewise. * include/experimental/any: Likewise. * include/experimental/array: Likewise. * include/experimental/bits/fs_dir.h: Likewise. * include/experimental/bits/fs_fwd.h: Likewise. * include/experimental/bits/fs_ops.h: Likewise. * include/experimental/bits/fs_path.h: Likewise. * include/experimental/buffer: Likewise. * include/experimental/internet: Likewise. * include/experimental/optional: Likewise. * include/experimental/propagate_const: Likewise. * include/experimental/socket: Likewise. * include/ext/pb_ds/assoc_container.hpp: Likewise. * include/ext/pb_ds/detail/priority_queue_base_dispatch.hpp: Likewise. * include/ext/pb_ds/detail/tree_policy/node_metadata_selector.hpp: Likewise. * include/ext/pb_ds/detail/trie_policy/node_metadata_selector.hpp: Likewise. * include/ext/pb_ds/detail/types_traits.hpp: Likewise. * include/ext/pb_ds/exception.hpp: Likewise. * include/ext/pb_ds/priority_queue.hpp: Likewise. * include/ext/pb_ds/tag_and_trait.hpp: Likewise. * include/ext/random: Likewise. * include/std/any: Likewise. * include/std/atomic: Likewise. * include/std/bitset: Likewise. * include/std/chrono: Likewise. * include/std/complex: Likewise. * include/std/condition_variable: Likewise. * include/std/fstream: Likewise. * include/std/future: Likewise. * include/std/iostream: Likewise. * include/std/istream: Likewise. * include/std/mutex: Likewise. * include/std/numeric: Likewise. * include/std/ostream: Likewise. * include/std/ratio: Likewise. * include/std/shared_mutex: Likewise. * include/std/stdexcept: Likewise. * include/std/streambuf: Likewise. * include/std/system_error: Likewise. * include/std/thread: Likewise. * include/std/valarray: Likewise. * include/std/variant: Likewise. * include/tr1/cmath: Likewise. * include/tr1/regex: Likewise. * include/tr2/dynamic_bitset: Likewise. * libsupc++/atomic_lockfree_defines.h: Likewise. * libsupc++/exception: Likewise. * libsupc++/exception.h: Likewise. * libsupc++/exception_ptr.h: Likewise. * libsupc++/nested_exception.h: Likewise. 2021-03-31 Alexandre Oliva * testsuite/30_threads/future/members/poll.cc: Use faster after-ready call in the calibration loop. 2021-03-29 Jonathan Wakely * doc/xml/manual/status_cxx2017.xml: Adjust link for PSTL. * doc/html/manual/status.html: Regenerate. 2021-03-28 François Dumont * include/debug/forward_list (forward_list(forward_list&&, const allocator_type&)): Add noexcept qualification. * include/debug/list (list(list&&, const allocator_type&)): Likewise and add call to safe container allocator aware move constructor. * include/debug/vector (vector(vector&&, const allocator_type&)): Fix noexcept qualification. * testsuite/23_containers/forward_list/cons/noexcept_move_construct.cc: Add allocator-extended move constructor noexceot qualification check. * testsuite/23_containers/list/cons/noexcept_move_construct.cc: Likewise. 2021-03-26 Jonathan Wakely * src/c++11/random.cc (USE_LCG): Define when a pseudo-random fallback is needed. [USE_LCG] (bad_seed, construct_lcg_at, destroy_lcg_at, __lcg): New helper functions and callback. (random_device::_M_init): Add 'prng' and 'all' enumerators. Replace switch with fallthrough with a series of 'if' statements. [USE_LCG]: Construct an lcg_type engine and use __lcg when cpuid checks fail. (random_device::_M_init_pretr1) [USE_MT19937]: Accept "prng" token. (random_device::_M_getval): Check for callback unconditionally and always pass _M_file pointer. * testsuite/26_numerics/random/random_device/85494.cc: Remove effective-target check. Use new random_device_available helper. * testsuite/26_numerics/random/random_device/94087.cc: Likewise. * testsuite/26_numerics/random/random_device/cons/default-cow.cc: Remove effective-target check. * testsuite/26_numerics/random/random_device/cons/default.cc: Likewise. * testsuite/26_numerics/random/random_device/cons/token.cc: Use new random_device_available helper. Test "prng" token. * testsuite/util/testsuite_random.h (random_device_available): New helper function. 2021-03-25 François Dumont * include/debug/string (basic_string(const basic_string&, const _Alloc&)): Define even if !_GLIBCXX_USE_CXX11_ABI. (basic_string(basic_string&&, const _Alloc&)): Likewise and add noexcept qualification. (basic_string<>::erase): Adapt to take __const_iterator. (basic_string(const _CharT*, const _Allocator&)): Remove assign call. (basic_string<>::insert(const_iterator, _InputIte, _InputIte)): Try to remove iterator debug layer even if !_GLIBCXX_USE_CXX11_ABI. [_GLIBCXX_USE_CHAR8_T] (__gnu_debug::u8string): New. (__gnu_debug::u16string, __gnu_debug::u32string): New. (std::hash<__gnu_debug::basic_string<>>): New partial specialization. (std::__is_fast_hash<__gnu_debug::basic_string<>>): Likewise. * testsuite/util/exception/safety.h (erase_base<__gnu_debug::basic_string<>>): New partial specialization. (insert_base<__gnu_debug::basic_string<>>): Likewise. * testsuite/util/testsuite_container_traits.h (traits<__gnu_debug::basic_string<>>): New partial specialization. * testsuite/21_strings/basic_string/hash/debug.cc: New test. * testsuite/21_strings/basic_string/requirements/citerators.cc: Add test on __gnu_debug::string. * testsuite/21_strings/basic_string/requirements/dr438/constructor.cc: Likewise. * testsuite/21_strings/basic_string/requirements/exception/basic.cc: Likewise. * testsuite/21_strings/basic_string/requirements/exception/generation_prohibited.cc: Likewise. * testsuite/21_strings/basic_string/requirements/exception/propagation_consistent.cc: Likewise. * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char/1.cc: Likewise. * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char16_t/1.cc: Likewise. * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char32_t/1.cc: Likewise. * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char8_t/1.cc: Likewise. * testsuite/21_strings/basic_string/requirements/explicit_instantiation/wchar_t/1.cc: Likewise. * testsuite/21_strings/basic_string/requirements/typedefs.cc: Likewise. 2021-03-25 Jakub Jelinek PR c++/99672 * testsuite/18_support/source_location/consteval.cc (main): Adjust expected column numbers. * testsuite/18_support/source_location/1.cc (main): Likewise. 2021-03-25 Jonathan Wakely * libsupc++/new_opa.cc [!_GLIBCXX_HOSTED]: Declare malloc. 2021-03-25 Jonathan Wakely * testsuite/util/exception/safety.h (setup_base::generate): Support seeding random engine. (erase_point, erase_range): Adjust range of random numbers to ensure dereferenceable iterators are used where required. (generation_prohibited::run): Do not try to erase from empty containers. * testsuite/util/testsuite_containergen.h (test_containers): Support seeding random engine. 2021-03-23 Jonathan Wakely * testsuite/std/ranges/adaptors/reverse.cc: Replace duplicated line with a check that uses the const being/end overloads. 2021-03-23 Moritz Sichert * include/std/ranges (reverse_view::begin, reverse_view::end): Qualify make_reverse_iterator calls to avoid ADL. * testsuite/std/ranges/adaptors/reverse.cc: Test that views::reverse works when make_reverse_iterator is defined in an associated namespace. 2021-03-23 Jonathan Wakely * include/bits/c++config (_GLIBCXX_LONG_DOUBLE_ALT128_COMPAT): Do not define when compiling with Clang. 2021-03-22 Jonathan Wakely * include/std/string_view (basic_string_view(Range&&)): Define new constructor and deduction guide. * testsuite/21_strings/basic_string_view/cons/char/range_c++20.cc: New test. * testsuite/21_strings/basic_string_view/cons/wchar_t/range_c++20.cc: New test. 2021-03-22 Jonathan Wakely * include/bits/range_access.h (begin(T (&)[N]), end(T (&)[N])): Add missing 'noexcept' as per LWG 2280. (rbegin(T (&)[N]), rend(T (&)[N]), rbegin(initializer_list)) (rend(initializer_list)): Add 'noexcept' as per LWG 3537. * testsuite/24_iterators/range_access/range_access.cc: Check for expected noexcept specifiers. Check result types of generic std::begin and std::end overloads. * testsuite/24_iterators/range_access/range_access_cpp14.cc: Check for expected noexcept specifiers. * testsuite/24_iterators/range_access/range_access_cpp17.cc: Likewise. 2021-03-19 Jonathan Wakely * include/std/type_traits (is_scoped_enum): Define. * include/std/version (__cpp_lib_is_scoped_enum): Define. * testsuite/20_util/is_scoped_enum/value.cc: New test. * testsuite/20_util/is_scoped_enum/version.cc: New test. 2021-03-16 Jonathan Wakely PR libstdc++/99341 * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Remove std::once_flag symbols. * config/abi/post/ia64-linux-gnu/baseline_symbols.txt: Likewise. * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Likewise. * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Likewise. * config/abi/pre/gnu.ver: Likewise. * src/c++11/mutex.cc [_GLIBCXX_HAVE_LINUX_FUTEX] (struct __once_flag_compat): Remove. (_ZNSt9once_flag11_M_activateEv): Remove. (_ZNSt9once_flag9_M_finishEb): Remove. 2021-03-16 Jonathan Wakely PR libstdc++/99341 * include/std/mutex [_GLIBCXX_HAVE_LINUX_FUTEX] (once_flag): Revert to pthread_once_t implementation. [_GLIBCXX_HAVE_LINUX_FUTEX] (call_once): Likewise. * src/c++11/mutex.cc [_GLIBCXX_HAVE_LINUX_FUTEX] (struct __once_flag_compat): New type matching the reverted implementation of once_flag using futexes. (once_flag::_M_activate): Remove, replace with ... (_ZNSt9once_flag11_M_activateEv): ... alias symbol. (once_flag::_M_finish): Remove, replace with ... (_ZNSt9once_flag9_M_finishEb): ... alias symbol. * testsuite/30_threads/call_once/66146.cc: Removed. 2021-03-15 Iain Sandoe * testsuite/17_intro/names.cc: Exclude j from the list of test symbols for Darwin. 2021-03-15 Iain Sandoe * config/os/bsd/darwin/ppc-extra.ver: Add matching for to_chars and from_chars for long double. 2021-03-15 Patrick Palka * include/bits/max_size_type.h (__max_size_type::operator _Tp): Fix formatting. (__max_size_type::operator++): Define. (__max_size_type::operator--): Likewise. (__max_size_type::operator<=>): Conditionally define (in place of the other comparison operators). (__max_diff_type::operator _Tp): Fix formatting. (__max_diff_type::operator++): Define. (__max_diff_type::operator--): Likewise. (__max_diff_type::operator<=>): Conditionally define (in place of the other comparison operators). * testsuite/std/ranges/iota/max_size_type.cc (test01): Test these operator overloads. 2021-03-15 Caroline Tice PR libstdc++/99172 * src/Makefile.am (AM_CXXFLAGS_PRE, AM_CXXFLAGS): Add AM_CXXFLAGS_PRE with the old definition of AM_CXXFLAGS; make AM_CXXFLAGS to be AM_CXXFLAGS_PRE with '-fvtable-verify=std' filtered out. * src/Makefile.in: Regenerate. 2021-03-11 Patrick Palka * src/c++17/floating_to_chars.cc: Simplify the file as if __SIZEOF_INT128__ is always defined. [!defined __SIZEOF_INT128__]: Include "uint128_t.h". Define a base-10 to_chars overload for the uint128_t class type. * src/c++17/uint128_t.h: New file. * testsuite/20_util/to_chars/long_double.cc: No longer expect an execution FAIL on targets that have a large long double type but lack __int128. 2021-03-11 Patrick Palka * src/c++17/ryu/LOCAL_PATCHES: Update. * src/c++17/ryu/d2s_intrinsics.h: Don't define uint128_t. * src/c++17/ryu/generic_128.h: Likewise. * src/c++17/ryu/ryu_generic_128.h (struct floating_decimal_128): Use uint128_t instead of __uint128_t. (generic_binary_to_decimal): Likewise. 2021-03-11 Patrick Palka * src/c++17/ryu/LOCAL_PATCHES: New file. 2021-03-11 Patrick Palka * src/c++17/floating_to_chars.cc (uint128_t): New conditionally defined alias of unsigned __int128. (floating_type_traits_binary128::mantissa_t): Use uint128_t instead of unsigned __int128. (floating_type_traits::mantissa_t) [LONG_DOUBLE_KIND == LDK_IBM128]: Likewise. (get_ieee_repr): Likewise. Make casts from uint_t to mantissa_t and uint32_t explicit. Simplify the extraction of mantissa, exponent and sign bit. 2021-03-11 Jonathan Wakely * include/std/barrier (barrier::arrival_token): New move-only class that encapsulates the underlying token value. 2021-03-11 Jonathan Wakely * python/libstdcxx/v6/printers.py (find_type): Use tag attribute instead of unqualified() method. 2021-03-11 Jonathan Wakely PR libstdc++/99537 * include/std/stop_token (_Stop_state_t::_M_release_ownership): Use acq_rel memory ordering. 2021-03-11 Jonathan Wakely PR libstdc++/99533 * src/c++17/fs_dir.cc (recursive_directory_iterator): Use new helper function to check for permission denied errors. * src/filesystem/dir.cc (recursive_directory_iterator): Likewise. * src/filesystem/dir-common.h (is_permission_denied_error): New helper function. 2021-03-11 Jonathan Wakely PR libstdc++/99536 * include/bits/random.h (normal_distribution): Use default-initializer for _M_saved and _M_saved_available. 2021-03-10 John David Anglin * testsuite/29_atomics/atomic/wait_notify/bool.cc: Add options to link with libatomic. * testsuite/29_atomics/atomic/wait_notify/generic.cc: Likewise. * testsuite/29_atomics/atomic/wait_notify/pointers.cc: Likewise. * testsuite/29_atomics/atomic_flag/wait_notify/1.cc: Likewise. * testsuite/30_threads/barrier/arrive.cc: Likewise. * testsuite/30_threads/barrier/arrive_and_drop.cc: Likewise. * testsuite/30_threads/barrier/arrive_and_wait.cc: Likewise. * testsuite/30_threads/barrier/completion.cc: Likewise. * testsuite/30_threads/latch/3.cc: Likewise. * testsuite/30_threads/semaphore/try_acquire.cc: Likewise. * testsuite/30_threads/semaphore/try_acquire_for.cc: Likewise. * testsuite/30_threads/semaphore/try_acquire_until.cc: Likewise. 2021-03-10 Jonathan Wakely PR libstdc++/99413 * include/bits/align.h: Include debug/assertions.h. * include/bits/codecvt.h: Include bits/c++config.h. * include/bits/enable_special_members.h: Likewise. * include/bits/erase_if.h: Likewise. * include/bits/functional_hash.h: Include . * include/bits/invoke.h: Include bits/move.h. * include/bits/ostream_insert.h: Include bits/exception_defines.h. * include/bits/parse_numbers.h: Include . * include/bits/predefined_ops.h: Include bits/c++config.h. * include/bits/range_access.h: Include bits/stl_iterator.h. * include/bits/stl_bvector.h: Do not include bits/stl_vector.h. * include/bits/stl_iterator.h: Include bits/stl_iterator_base_types.h. * include/bits/stl_uninitialized.h: Include bits/stl_algobase.h. * include/bits/uniform_int_dist.h: Include bits/concept_check.h. * include/bits/unique_lock.h: Include bits/std_mutex.h. * include/debug/assertions.h: Include bits/c++config.h. 2021-03-10 Jonathan Wakely * include/bits/ranges_cmp.h (__eq_builtin_ptr_cmp): Remove. (ranges::equal_to, ranges::not_equal_to): Do not constrain with __eq_builtin_ptr_cmp. (ranges::less, ranges::greater, ranges::less_equal) (ranges::greater_equal): Do not constrain with __less_builtin_ptr_cmp. * libsupc++/compare (compare_three_way): Do not constrain with __3way_builtin_ptr_cmp. * testsuite/18_support/comparisons/object/builtin-ptr-three-way.cc: Moved to... * testsuite/18_support/comparisons/object/lwg3530.cc: ...here. * testsuite/20_util/function_objects/range.cmp/lwg3530.cc: New test. 2021-03-10 Jonathan Wakely * testsuite/std/time/syn_c++20.cc: Enable synopsis checks for C++20 calendar types. 2021-03-06 Jakub Jelinek PR libstdc++/99396 * include/std/bit (__rotl, __rotr): Add optimized variants for power of two _Nd which the compiler can pattern match the rotates. 2021-03-04 Jonathan Wakely PR libstdc++/99382 * testsuite/20_util/specialized_algorithms/uninitialized_default_n/sizes.cc: Make storage larger than required. Verify no write to the last element. * testsuite/20_util/specialized_algorithms/uninitialized_value_construct_n/sizes.cc: Likewise. 2021-03-03 Rainer Orth * 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. 2021-03-03 Rainer Orth * include/experimental/bits/simd.h: Replace reserved _X, _B by _Xp, _Bp. * include/experimental/bits/simd_builtin.h: Likewise. * include/experimental/bits/simd_x86.h: Likewise. 2021-02-27 Jonathan Wakely PR libstdc++/99301 * include/std/chrono (year_month_day::_M_days_since_epoch()): Convert chrono::month and chrono::day to unsigned before converting to uint32_t. 2021-02-25 Jonathan Wakely * include/std/chrono (year_month_day::_S_from_days): Perform all calculations with type uint32_t. 2021-02-25 Jonathan Wakely * doc/xml/manual/abi.xml: Document versioning for GCC 11. * doc/html/manual/abi.html: Regenerate. 2021-02-25 Jonathan Wakely PR libstdc++/99270 * testsuite/27_io/headers/cstdio/types_std.cc: Use pointer to FILE instead of FILE. 2021-02-25 Andreas Schwab * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update. * config/abi/post/ia64-linux-gnu/baseline_symbols.txt: Update. * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update. * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update. 2021-02-25 Jonathan Wakely PR libstdc++/99265 * include/std/chrono (year_month_day::_S_from_days): Cast long to int explicitly. 2021-02-25 Jonathan Wakely * include/std/utility (to_underlying): Define. * include/std/version (__cpp_lib_to_underlying): Define. * testsuite/20_util/to_underlying/1.cc: New test. * testsuite/20_util/to_underlying/version.cc: New test. 2021-02-24 Jonathan Wakely PR libstdc++/99261 * src/c++17/floating_to_chars.cc (sprintf_ld): Add extra args before value to be printed. 2021-02-24 Patrick Palka * src/c++17/floating_to_chars.cc (__floating_to_chars_precision): Relax the condition that guards the printf code path to accept F128_type as well as long double. 2021-02-24 Cassio Neri * include/std/chrono (year_month_day_last:day): New implementation. 2021-02-24 Cassio Neri * include/std/chrono (year::is_leap): New implementation. * testsuite/std/time/year/2.cc: New test. 2021-02-24 Cassio Neri * include/std/chrono (year_month_day::_M_days_since_epoch): New implementation. * testsuite/std/time/year_month_day/4.cc: New test. 2021-02-24 Cassio Neri * include/std/chrono (year_month_day::_S_from_days): New implementation. * testsuite/std/time/year_month_day/3.cc: New test. 2021-02-24 Patrick Palka PR libstdc++/98384 * testsuite/20_util/to_chars/long_double.cc: Include . (test01): Simplify verifying the nearby values by using a 2-iteration loop and a dedicated output buffer to check that the nearby values are different. Factor out the printf-based verification into a local function, and check that the leading hex digits agree before comparing to the output of printf. Also verify the output by round-tripping it through from_chars. 2021-02-24 Jonathan Wakely PR libstdc++/98389 * config/abi/pre/gnu.ver (GLIBCXX_3.4.29): Do not match to_chars symbols for long double arguments mangled as 'g'. * config/os/gnu-linux/ldbl-extra.ver: Likewise. * config/os/gnu-linux/ldbl-ieee128-extra.ver: Likewise. * src/c++17/Makefile.am [GLIBCXX_LDBL_ALT128_COMPAT_TRUE]: Use -mabi=ibmlongdouble for floating_to_chars.cc. * src/c++17/Makefile.in: Regenerate. * src/c++17/floating_to_chars.cc (floating_type_traits_binary128): New type defining type traits of IEEE binary128 format. (floating_type_traits<__float128>): Define specialization. (floating_type_traits): Define in terms of floating_type_traits_binary128 when appropriate. (floating_to_shortest_scientific): Handle __float128. (sprintf_ld): New function template for printing a long double or __ieee128 value using sprintf. (__floating_to_chars_shortest, __floating_to_chars_precision): Use sprintf_ld. (to_chars): Define overloads for __float128. 2021-02-24 Jonathan Wakely * testsuite/17_intro/names.cc: Undefine 'u' on powerpc*-linux*. 2021-02-23 Martin Sebor PR c++/99074 * libsupc++/dyncast.cc (__dynamic_cast): Return null when first argument is null. 2021-02-23 Jakub Jelinek PR libstdc++/99181 * testsuite/21_strings/char_traits/requirements/char/99181.cc: New test. 2021-02-23 Jakub Jelinek PR libstdc++/99181 * include/bits/char_traits.h (char_traits::compare): For constexpr evaluation don't call __gnu_cxx::char_traits::compare but do the comparison loop directly. 2021-02-23 Jakub Jelinek PR libstdc++/97549 * include/pstl/parallel_backend_serial.h: Remove __pstl::__par_backend. 2021-02-23 Patrick Palka PR libstdc++/98384 * src/c++17/floating_to_chars.cc (get_ieee_repr): Extract the high- and low-order parts from an IBM long double value in an endian-agnostic way. 2021-02-19 Jonathan Wakely * include/bits/atomic_wait.h (__thread_relax()): Call __thread_yield() not __gthread_yield(). 2021-02-15 Jonathan Wakely * include/bits/atomic_wait.h (__thread_yield()): Check _GLIBCXX_HAS_GTHREADS before using __gthread_yield. (__thread_relax()): Use __thread_yield() instead of repeating the preprocessor checks for __gthread_yield. 2021-02-15 Jonathan Wakely * include/std/mutex (once_flag::_M_activate()): Add explicit return statement for passive case. (once_flag::_M_finish(bool)): Use reserved name for parameter. 2021-02-14 Jonathan Wakely PR libstdc++/99096 * testsuite/util/testsuite_fs.h: Always include . 2021-02-12 Jonathan Wakely PR libstdc++/88881 * src/c++17/fs_ops.cc (fs::symlink_status): Re-enable workaround. 2021-02-12 Jonathan Wakely * doc/xml/manual/status_cxx2014.xml: Document implementation specific properties of std::experimental::filesystem::rename. * doc/xml/manual/status_cxx2017.xml: Document implementation specific properties of std::filesystem::rename. * doc/html/*: Regenerate. * src/c++17/fs_ops.cc (fs::rename): Implement correct behaviour for directories on Windows. * src/filesystem/ops-common.h (__gnu_posix::rename): Use MoveFileExW on Windows. * testsuite/27_io/filesystem/operations/rename.cc: New test. * testsuite/experimental/filesystem/operations/rename.cc: New test. 2021-02-12 Jonathan Wakely * testsuite/util/testsuite_fs.h (nonexistent_path): Add random number to the path. 2021-02-12 Jonathan Wakely * include/experimental/internet (address_v6::to_string): Include scope ID in string. * testsuite/experimental/net/internet/address/v6/members.cc: Test to_string() results. 2021-02-12 Jonathan Wakely * include/experimental/internet (address_v6::any): Avoid using memcpy in constexpr function. (address_v6::loopback): Likewise. (make_address_v6): Fix missing return statements on error paths. * include/experimental/io_context: Avoid -Wdangling-else warning. * testsuite/experimental/net/internet/address/v4/members.cc: Remove unused variables. * testsuite/experimental/net/internet/address/v6/members.cc: New test. 2021-02-12 Jonathan Wakely * include/bits/shared_ptr_base.h (__shared_ptr::_M_get_deleter): Add unused attribute to parameter. * src/c++11/shared_ptr.cc (_Sp_make_shared_tag::_S_eq): Likewise. 2021-02-12 Jonathan Wakely * testsuite/27_io/basic_ostream/emit/1.cc: Expect test to fail if -fno-rtti is used. * testsuite/30_threads/async/forced_unwind.cc: Expect test to abort if -fno-rtti is used. 2021-02-12 Jonathan Wakely * testsuite/util/testsuite_allocator.h (memory_resource): Remove requirement for RTTI and exceptions to be enabled. 2021-02-12 Jonathan Wakely * testsuite/27_io/basic_istringstream/rdbuf/char/2832.cc: Use static_cast when RTTI is disabled. * testsuite/27_io/basic_istringstream/rdbuf/wchar_t/2832.cc: Likewise. * testsuite/27_io/basic_ostringstream/rdbuf/char/2832.cc: Likewise. * testsuite/27_io/basic_ostringstream/rdbuf/wchar_t/2832.cc: Likewise. * testsuite/27_io/basic_stringstream/str/char/2.cc: Likewise. * testsuite/27_io/basic_stringstream/str/wchar_t/2.cc: Likewise. 2021-02-12 Jonathan Wakely * include/std/ostream (__syncbuf_base::_S_get): Mark parameter as unused and only use dynamic_cast when RTTI is enabled. 2021-02-12 Jonathan Wakely PR libstdc++/99077 * src/c++11/cxx11-ios_failure.cc (__ios_failure(const char*, int)): Change int parameter to error_code, to match std::ios_failure. (__throw_ios_failure(const char*, int)): Construct error_code from int parameter. 2021-02-11 Jonathan Wakely * libsupc++/eh_ptr.cc (_GLIBCXX_EH_PTR_RELOPS_COMPAT): Define new macro. * libsupc++/exception_ptr.h (_GLIBCXX_EH_PTR_USED): Check new macro instead of _GLIBCXX_EH_PTR_COMPAT. (operator==): Likewise. 2021-02-11 Jonathan Wakely PR libstdc++/99058 * doc/xml/manual/status_cxx2011.xml: Document when support became stable. * doc/xml/manual/status_cxx2014.xml: Likewise. * doc/xml/manual/status_cxx2017.xml: Likewise. * doc/html/manual/status.html: Regenerate. 2021-02-10 Jonathan Wakely PR libstdc++/88881 * src/c++17/fs_ops.cc (fs::status): Re-enable workaround. 2021-02-10 Jonathan Wakely * src/c++17/fs_ops.cc (fs::create_hard_link, fs::equivalent) (fs::remove): Use std::system_category() for error codes from GetLastError(). * src/filesystem/ops.cc (fs::create_hard_link, fs::remove): Likewise. 2021-02-10 Jonathan Wakely * testsuite/27_io/filesystem/operations/proximate.cc: Fix typo in __MINGW32__ macro name. * testsuite/27_io/filesystem/path/compare/lwg2936.cc: Likewise. * testsuite/27_io/filesystem/path/generation/proximate.cc: Likewise. * testsuite/27_io/filesystem/path/generation/relative.cc: Likewise. * testsuite/util/testsuite_fs.h: Likewise. 2021-02-09 François Dumont * include/bits/stl_tree.h (__has_is_transparent, __has_is_transparent_t): Move... * include/bits/stl_function.h: ...here. * include/bits/hashtable_policy.h (_Hash_code_base<>::_M_hash_code_tr): New.. (_Hashtable_base<>::_M_equals_tr): New. * include/bits/hashtable.h (_Hashtable<>::_M_find_tr, _Hashtable<>::_M_count_tr, _Hashtable<>::_M_equal_range_tr): New member function templates to perform heterogeneous lookup. (_Hashtable<>::_M_find_before_node_tr): New. (_Hashtable<>::_M_find_node_tr): New. * include/bits/unordered_map.h (unordered_map::find<>, unordered_map::count<>, unordered_map::contains<>, unordered_map::equal_range<>): New member function templates to perform heterogeneous lookup. (unordered_multimap::find<>, unordered_multimap::count<>, unordered_multimap::contains<>, unordered_multimap::equal_range<>): Likewise. * include/bits/unordered_set.h (unordered_set::find<>, unordered_set::count<>, unordered_set::contains<>, unordered_set::equal_range<>): Likewise. (unordered_multiset::find<>, unordered_multiset::count<>, unordered_multiset::contains<>, unordered_multiset::equal_range<>): Likewise. * include/debug/unordered_map (unordered_map::find<>, unordered_map::equal_range<>): Likewise. (unordered_multimap::find<>, unordered_multimap::equal_range<>): Likewise. * include/debug/unordered_set (unordered_set::find<>, unordered_set::equal_range<>): Likewise. (unordered_multiset::find<>, unordered_multiset::equal_range<>): Likewise. * testsuite/23_containers/unordered_map/operations/1.cc: New test. * testsuite/23_containers/unordered_multimap/operations/1.cc: New test. * testsuite/23_containers/unordered_multiset/operations/1.cc: New test. * testsuite/23_containers/unordered_set/operations/1.cc: New test. 2021-02-09 François Dumont * include/bits/stl_deque.h (std::operator-(deque::iterator, deque::iterator)): Replace if/then with a null pointer test. 2021-02-09 Jonathan Wakely * testsuite/27_io/filesystem/operations/remove_all.cc: Remove test directory after making it writable again. * testsuite/experimental/filesystem/operations/remove_all.cc: Likewise. 2021-02-09 Jonathan Wakely PR libstdc++/99021 * include/std/coroutine (coroutine_handle

::from_address): Add noexcept. 2021-02-09 Vladimir Vishnevsky * include/ext/stdio_sync_filebuf.h: Remove unused . * src/c++17/fs_ops.cc (fs::permissions): Qualify mode_t. 2021-02-09 Jakub Jelinek PR middle-end/98465 * include/bits/basic_string.tcc (basic_string::_M_replace): When __s points to the characters moved by earlier _S_move, compute the source address using expression based on the __p pointer rather than __s pointer. 2021-02-03 Jonathan Wakely * testsuite/19_diagnostics/error_code/operators/not_equal.cc: Add comparison with same category and different values. * testsuite/19_diagnostics/error_code/operators/less.cc: Likewise. Fix comparison involving different categories. * testsuite/19_diagnostics/error_code/operators/three_way.cc: Likewise. * testsuite/19_diagnostics/error_condition/operators/less.cc: Add comment. * testsuite/19_diagnostics/error_condition/operators/three_way.cc: Likewise. 2021-02-03 yaozhongxiao * include/experimental/bits/simd_neon.h: Replace repeated vpadd calls with a single vaddv for aarch64. 2021-02-03 Matthias Kretz * testsuite/Makefile.am: Warn about the workaround. Add -fno-tree-vrp to CXXFLAGS passed to the check_simd script. Improve initial user feedback from make check-simd. * testsuite/Makefile.in: Regenerated. 2021-02-03 Matthias Kretz * include/experimental/bits/simd.h: Add __detail::_Minimum and __detail::_Maximum to use them as _BinaryOperation to _S_reduce. Add hmin and hmax overloads for simd and const_where_expression. * include/experimental/bits/simd_scalar.h (_SimdImplScalar::_S_reduce): Make unused _BinaryOperation parameter const-ref to allow calling _S_reduce with an rvalue. * testsuite/experimental/simd/tests/reductions.cc: Add tests for hmin and hmax. Since the compiler statically determined that all tests pass, repeat the test after a call to make_value_unknown. 2021-02-03 Matthias Kretz * testsuite/experimental/simd/tests/bits/verify.h (verify): Add instruction pointer data member. Ensure that the `if (m_failed)` branch is always inlined into the calling code. The body of the conditional can still be a function call. Move the get_ip call into the verify ctor to simplify the ctor calls. (COMPARE): Don't mention the use of all_of for reduction of a simd_mask. It only distracts from the real issue. 2021-02-03 Matthias Kretz * testsuite/experimental/simd/driver.sh: Abstract reading test options into read_src_option function. Read skip, only, expensive, and xfail via read_src_option. Add timeout and timeout-factor options and adjust timeout variable accordingly. * testsuite/experimental/simd/tests/loadstore.cc: Set timeout-factor 2. 2021-02-03 Matthias Kretz * testsuite/experimental/simd/driver.sh: When handling the pipe to log (and on verbose to stdout) count the lines. If it exceeds 1000 log the issue and exit 125, which is then handled as a failure. 2021-02-03 Matthias Kretz * testsuite/experimental/simd/tests/hypot3_fma.cc: Add skip: markup for long double on powerpc64*. 2021-02-03 Matthias Kretz * include/experimental/bits/simd.h: Add __have_power10vec conditional on _ARCH_PWR10. * include/experimental/bits/simd_builtin.h: Forward declare _MaskImplPpc and use it as _MaskImpl when __ALTIVEC__ is defined. (_MaskImplBuiltin::_S_some_of): Call _S_popcount from the _SuperImpl for optimizations and correctness. * include/experimental/bits/simd_ppc.h: Add _MaskImplPpc. (_MaskImplPpc::_S_popcount): Implement via vec_cntm for POWER10. Otherwise, for >=int use -vec_sums divided by a sizeof factor. For * testsuite/experimental/simd/driver.sh: Remove executable on SIGINT. Process compiler and test executable output: In verbose mode print messages immediately, limited to 1000 lines and breaking long lines to below $COLUMNS (or 1024 if not set). Communicating the exit status of the compiler / test with the necessary pipe is done via a message through stdout/-in. 2021-02-03 Matthias Kretz * testsuite/Makefile.am: Ensure .simd.summary is empty before collecting a new summary. * testsuite/Makefile.in: Regenerate. 2021-02-03 Matthias Kretz * testsuite/experimental/simd/generate_makefile.sh: Use different variables internally than documented for user overrides. This makes internal append/prepend work as intended. 2021-02-03 Matthias Kretz * testsuite/experimental/simd/driver.sh (verify_test): Print test output on run xfail. Do not repeat lines from the log that were already printed on stdout. (test_selector): Make the compiler flags pattern usable as a substring selector. (toplevel): Trap on SIGINT and remove the log and sum files. Call timout with --foreground to quickly terminate on SIGINT. * testsuite/experimental/simd/generate_makefile.sh: Simplify run targets via target patterns. Default DRIVEROPTS to -v for run targets. Remove log and sum files after completion of the run target (so that it's always recompiled). Place help text into text file for reasonable 'make help' performance. 2021-02-03 Matthias Kretz * include/experimental/bits/simd.h: Remove unnecessary static assertion. Allow sizeof(8) integer __intrinsic_type to enable the necessary mask type. 2021-02-03 Matthias Kretz * include/experimental/bits/simd.h: Let __intrinsic_type be valid if sizeof(long double) == sizeof(double) and use a __vector double as member type. 2021-02-03 Matthias Kretz * include/experimental/bits/simd.h (__is_intrinsic_type): New internal type trait. Alias for __is_vector_type on x86. (_VectorTraitsImpl): Enable for __intrinsic_type in addition for __vector_type. (__intrin_bitcast): Allow casting to & from vector & intrinsic types. (__intrinsic_type): Explicitly specialize for NEON intrinsic vector types. 2021-02-03 Matthias Kretz * testsuite/experimental/simd/driver.sh: Implement skip, only, expensive, and xfail markers. They can select on type, ABI tag subset number, target-triplet, and compiler flags. * testsuite/experimental/simd/generate_makefile.sh: The summary now includes lines for unexpected passes and expected failures. If the skip or only markers are only conditional on the type, do not generate rules for those types. * testsuite/experimental/simd/tests/abs.cc: Mark test expensive for ABI tag subsets 1-9. * testsuite/experimental/simd/tests/algorithms.cc: Ditto. * testsuite/experimental/simd/tests/broadcast.cc: Ditto. * testsuite/experimental/simd/tests/casts.cc: Ditto. * testsuite/experimental/simd/tests/generator.cc: Ditto. * testsuite/experimental/simd/tests/integer_operators.cc: Ditto. * testsuite/experimental/simd/tests/loadstore.cc: Ditto. * testsuite/experimental/simd/tests/mask_broadcast.cc: Ditto. * testsuite/experimental/simd/tests/mask_conversions.cc: Ditto. * testsuite/experimental/simd/tests/mask_implicit_cvt.cc: Ditto. * testsuite/experimental/simd/tests/mask_loadstore.cc: Ditto. * testsuite/experimental/simd/tests/mask_operator_cvt.cc: Ditto. * testsuite/experimental/simd/tests/mask_operators.cc: Ditto. * testsuite/experimental/simd/tests/mask_reductions.cc: Ditto. * testsuite/experimental/simd/tests/operator_cvt.cc: Ditto. * testsuite/experimental/simd/tests/operators.cc: Ditto. * testsuite/experimental/simd/tests/reductions.cc: Ditto. * testsuite/experimental/simd/tests/simd.cc: Ditto. * testsuite/experimental/simd/tests/split_concat.cc: Ditto. * testsuite/experimental/simd/tests/splits.cc: Ditto. * testsuite/experimental/simd/tests/where.cc: Ditto. * testsuite/experimental/simd/tests/fpclassify.cc: Ditto. In addition replace "test only floattypes" marker by unconditional "float|double|ldouble" only marker. * testsuite/experimental/simd/tests/frexp.cc: Ditto. * testsuite/experimental/simd/tests/hypot3_fma.cc: Ditto. * testsuite/experimental/simd/tests/ldexp_scalbn_scalbln_modf.cc: Ditto. * testsuite/experimental/simd/tests/logarithm.cc: Ditto. * testsuite/experimental/simd/tests/math_1arg.cc: Ditto. * testsuite/experimental/simd/tests/math_2arg.cc: Ditto. * testsuite/experimental/simd/tests/remqo.cc: Ditto. * testsuite/experimental/simd/tests/trigonometric.cc: Ditto. * testsuite/experimental/simd/tests/trunc_ceil_floor.cc: Ditto. * testsuite/experimental/simd/tests/sincos.cc: Ditto. In addition, xfail on run because the reference data is missing. 2021-02-02 Jonathan Wakely * doc/xml/manual/status_cxx2011.xml: Remove stray table cell. * doc/xml/manual/status_cxx2014.xml: Likewise. * doc/xml/manual/status_cxx2017.xml: Likewise. * doc/html/manual/status.html: Regenerate. 2021-02-01 François Dumont PR libstdc++/70303 * include/bits/stl_deque.h (std::deque<>::operator-(iterator, iterator)): Return 0 if both iterators are value-initialized. * testsuite/23_containers/deque/70303.cc: New test. * testsuite/23_containers/vector/70303.cc: New test. 2021-02-01 Jonathan Wakely * doc/xml/manual/status_cxx2011.xml: Update std::call_once status. * doc/xml/manual/status_cxx2014.xml: Likewise. * doc/xml/manual/status_cxx2017.xml: Likewise. Update std::from_chars and std::to_chars status. Fix formatting. * doc/html/manual/status.html: Regenerate. 2021-01-28 Jonathan Wakely * include/experimental/bits/numeric_traits.h: Update copyright dates. * include/experimental/bits/simd.h: Likewise. * include/experimental/bits/simd_builtin.h: Likewise. * include/experimental/bits/simd_converter.h: Likewise. * include/experimental/bits/simd_detail.h: Likewise. * include/experimental/bits/simd_fixed_size.h: Likewise. * include/experimental/bits/simd_math.h: Likewise. * include/experimental/bits/simd_neon.h: Likewise. * include/experimental/bits/simd_ppc.h: Likewise. * include/experimental/bits/simd_scalar.h: Likewise. * include/experimental/bits/simd_x86.h: Likewise. * include/experimental/bits/simd_x86_conversions.h: Likewise. * include/experimental/simd: Likewise. * testsuite/experimental/simd/*: Likewise. 2021-01-27 Jonathan Wakely * doc/xml/manual/status_cxx2017.xml: Replace invalid entity. * doc/html/*: Regenerate. 2021-01-27 Jonathan Wakely * testsuite/experimental/simd/generate_makefile.sh: Use printf instead of echo when printing escape characters. 2021-01-27 Matthias Kretz * scripts/check_simd: New file. This script is called from the the check-simd target. It determines a set of compiler flags and simulator setups for calling generate_makefile.sh and passes the information back to the check-simd target, which recurses to the generated Makefiles. * scripts/create_testsuite_files: Remove files below simd/tests/ from testsuite_files and place them in testsuite_files_simd. * testsuite/Makefile.am: Add testsuite_files_simd. Add check-simd target. * testsuite/Makefile.in: Regenerate. * testsuite/experimental/simd/driver.sh: New file. This script compiles and runs a given simd test, logging its output and status. It uses the timeout command to implement compile and test timeouts. * testsuite/experimental/simd/generate_makefile.sh: New file. This script generates a Makefile which uses driver.sh to compile and run the tests and collect the logs into a single log file. * testsuite/experimental/simd/tests/abs.cc: New file. Tests abs(simd). * testsuite/experimental/simd/tests/algorithms.cc: New file. Tests min/max(simd, simd). * testsuite/experimental/simd/tests/bits/conversions.h: New file. Contains functions to support tests involving conversions. * testsuite/experimental/simd/tests/bits/make_vec.h: New file. Support functions make_mask and make_vec. * testsuite/experimental/simd/tests/bits/mathreference.h: New file. Support functions to supply precomputed math function reference data. * testsuite/experimental/simd/tests/bits/metahelpers.h: New file. Support code for SFINAE testing. * testsuite/experimental/simd/tests/bits/simd_view.h: New file. * testsuite/experimental/simd/tests/bits/test_values.h: New file. Test functions to easily drive a test with simd objects initialized from a given list of values and a range of random values. * testsuite/experimental/simd/tests/bits/ulp.h: New file. Support code to determine the ULP distance of simd objects. * testsuite/experimental/simd/tests/bits/verify.h: New file. Test framework for COMPARE'ing simd objects and instantiating the test templates with value_type and ABI tag. * testsuite/experimental/simd/tests/broadcast.cc: New file. Test simd broadcasts. * testsuite/experimental/simd/tests/casts.cc: New file. Test simd casts. * testsuite/experimental/simd/tests/fpclassify.cc: New file. Test floating-point classification functions. * testsuite/experimental/simd/tests/frexp.cc: New file. Test frexp(simd). * testsuite/experimental/simd/tests/generator.cc: New file. Test simd generator constructor. * testsuite/experimental/simd/tests/hypot3_fma.cc: New file. Test 3-arg hypot(simd,simd,simd) and fma(simd,simd,sim). * testsuite/experimental/simd/tests/integer_operators.cc: New file. Test integer operators. * testsuite/experimental/simd/tests/ldexp_scalbn_scalbln_modf.cc: New file. Test ldexp(simd), scalbn(simd), scalbln(simd), and modf(simd). * testsuite/experimental/simd/tests/loadstore.cc: New file. Test (converting) simd loads and stores. * testsuite/experimental/simd/tests/logarithm.cc: New file. Test log*(simd). * testsuite/experimental/simd/tests/mask_broadcast.cc: New file. Test simd_mask broadcasts. * testsuite/experimental/simd/tests/mask_conversions.cc: New file. Test simd_mask conversions. * testsuite/experimental/simd/tests/mask_implicit_cvt.cc: New file. Test simd_mask implicit conversions. * testsuite/experimental/simd/tests/mask_loadstore.cc: New file. Test simd_mask loads and stores. * testsuite/experimental/simd/tests/mask_operator_cvt.cc: New file. Test simd_mask operators convert as specified. * testsuite/experimental/simd/tests/mask_operators.cc: New file. Test simd_mask compares, subscripts, and negation. * testsuite/experimental/simd/tests/mask_reductions.cc: New file. Test simd_mask reductions. * testsuite/experimental/simd/tests/math_1arg.cc: New file. Test 1-arg math functions on simd. * testsuite/experimental/simd/tests/math_2arg.cc: New file. Test 2-arg math functions on simd. * testsuite/experimental/simd/tests/operator_cvt.cc: New file. Test implicit conversions on simd binary operators behave as specified. * testsuite/experimental/simd/tests/operators.cc: New file. Test simd compares, subscripts, not, unary minus, plus, minus, multiplies, divides, increment, and decrement. * testsuite/experimental/simd/tests/reductions.cc: New file. Test reduce(simd). * testsuite/experimental/simd/tests/remqo.cc: New file. Test remqo(simd). * testsuite/experimental/simd/tests/simd.cc: New file. Basic sanity checks of simd types. * testsuite/experimental/simd/tests/sincos.cc: New file. Test sin(simd) and cos(simd). * testsuite/experimental/simd/tests/split_concat.cc: New file. Test split(simd) and concat(simd, simd). * testsuite/experimental/simd/tests/splits.cc: New file. Test split(simd_mask). * testsuite/experimental/simd/tests/trigonometric.cc: New file. Test remaining trigonometric functions on simd. * testsuite/experimental/simd/tests/trunc_ceil_floor.cc: New file. Test trunc(simd), ceil(simd), and floor(simd). * testsuite/experimental/simd/tests/where.cc: New file. Test masked operations using where. 2021-01-27 Matthias Kretz * doc/xml/manual/status_cxx2017.xml: Add implementation status of the Parallelism TS 2. Document implementation-defined types and behavior. * include/Makefile.am: Add new headers. * include/Makefile.in: Regenerate. * include/experimental/simd: New file. New header for Parallelism TS 2. * include/experimental/bits/numeric_traits.h: New file. Implementation of P1841R1 using internal naming. Addition of missing IEC559 functionality query. * include/experimental/bits/simd.h: New file. Definition of the public simd interfaces and general implementation helpers. * include/experimental/bits/simd_builtin.h: New file. Implementation of the _VecBuiltin simd_abi. * include/experimental/bits/simd_converter.h: New file. Generic simd conversions. * include/experimental/bits/simd_detail.h: New file. Internal macros for the simd implementation. * include/experimental/bits/simd_fixed_size.h: New file. Simd fixed_size ABI specific implementations. * include/experimental/bits/simd_math.h: New file. Math overloads for simd. * include/experimental/bits/simd_neon.h: New file. Simd NEON specific implementations. * include/experimental/bits/simd_ppc.h: New file. Implement bit shifts to avoid invalid results for integral types smaller than int. * include/experimental/bits/simd_scalar.h: New file. Simd scalar ABI specific implementations. * include/experimental/bits/simd_x86.h: New file. Simd x86 specific implementations. * include/experimental/bits/simd_x86_conversions.h: New file. x86 specific conversion optimizations. The conversion patterns work around missing conversion patterns in the compiler and should be removed as soon as PR85048 is resolved. * testsuite/experimental/simd/standard_abi_usable.cc: New file. Test that all (not all fixed_size, though) standard simd and simd_mask types are usable. * testsuite/experimental/simd/standard_abi_usable_2.cc: New file. As above but with -ffast-math. * testsuite/libstdc++-dg/conformance.exp: Don't build simd tests from the standard test loop. Instead use check_vect_support_and_set_flags to build simd tests with the relevant machine flags. 2021-01-27 Jonathan Wakely PR libstdc++/66414 * include/bits/string_view.tcc (basic_string_view::find(const CharT*, size_type, size_type)): Optimize. 2021-01-27 Paul Fee * include/bits/basic_string.h (basic_string::contains): New member functions. * include/std/string_view (basic_string_view::contains): Likewise. * include/std/version (__cpp_lib_string_contains): Define. * testsuite/21_strings/basic_string/operations/starts_with/char/1.cc: Remove trailing whitespace. * testsuite/21_strings/basic_string/operations/starts_with/wchar_t/1.cc: Likewise. * testsuite/21_strings/basic_string/operations/contains/char/1.cc: New test. * testsuite/21_strings/basic_string/operations/contains/wchar_t/1.cc: New test. * testsuite/21_strings/basic_string_view/operations/contains/char/1.cc: New test. * testsuite/21_strings/basic_string_view/operations/contains/char/2.cc: New test. * testsuite/21_strings/basic_string_view/operations/contains/wchar_t/1.cc: New test. 2021-01-21 Jonathan Wakely * src/c++17/Makefile.in: Regenerate. 2021-01-20 David Edelsohn * config/os/aix/ctype_inline.h (bool ctype:: is): Cast _OBJ_DATA subscript to unsigned char. Add _THREAD_SAFE access to __lc_type. (const char* ctype:: is): Same. 2021-01-18 Jonathan Wakely PR libstdc++/98725 * testsuite/20_util/unique_ptr/io/lwg2948.cc: Do not try to write to a wide character stream if wide character support is disabled in the library. 2021-01-18 Jonathan Wakely * testsuite/27_io/basic_stringstream/cons/char/1.cc: Use stringbuf not wstringbuf. 2021-01-18 Jakub Jelinek PR debug/98708 * src/c++11/Makefile.am (cxx11-ios_failure-lt.s, cxx11-ios_failure.s): Compile with -gno-as-loc-support. * src/c++11/Makefile.in: Regenerated. 2021-01-16 H.J. Lu * testsuite/29_atomics/atomic_flag/test_and_set/explicit-hle.cc: Add -fcf-protection=none to -march=i486. 2021-01-14 François Dumont * testsuite/23_containers/deque/debug/98466.cc: Make it pre-C++11 compliant. 2021-01-14 Alexandre Oliva * testsuite/30_threads/future/members/poll.cc: Calibrate iteration count. 2021-01-14 François Dumont PR libstdc++/98466 * include/bits/hashtable_policy.h (_Node_iterator_base()): Set _M_cur to nullptr. (_Node_iterator()): Make default. (_Node_const_iterator()): Make default. * include/debug/macros.h (__glibcxx_check_erae_range_after): Add _M_singular iterator checks. * include/debug/safe_iterator.h (_GLIBCXX_DEBUG_VERIFY_OPERANDS): Accept if both iterator are value initialized. * include/debug/safe_local_iterator.h (_GLIBCXX_DEBUG_VERIFY_OPERANDS): Likewise. * include/debug/safe_iterator.tcc (_Safe_iterator<>::_M_valid_range): Add _M_singular checks on input iterators. * src/c++11/debug.cc (_Safe_iterator_base::_M_can_compare): Remove _M_singular checks. * testsuite/23_containers/deque/debug/98466.cc: New test. * testsuite/23_containers/unordered_map/debug/98466.cc: New test. 2021-01-14 Jonathan Wakely PR libstdc++/98471 * include/bits/fs_path.h (__throw_conversion_error): New function to throw or abort on character conversion errors. (__wstr_from_utf8): Move definition after filesystem_error has been defined. Use __throw_conversion_error. (path::_S_convert<_EcharT>): Use __throw_conversion_error. (path::_S_str_convert<_CharT, _Traits, _Allocator>): Likewise. (path::u8string): Likewise. 2021-01-14 Jonathan Wakely * include/std/barrier: Update copyright years. Fix whitespace. * include/std/version: Fix whitespace. * testsuite/30_threads/barrier/1.cc: Update copyright years. * testsuite/30_threads/barrier/2.cc: Likewise. * testsuite/30_threads/barrier/arrive.cc: Likewise. * testsuite/30_threads/barrier/arrive_and_drop.cc: Likewise. * testsuite/30_threads/barrier/arrive_and_wait.cc: Likewise. * testsuite/30_threads/barrier/completion.cc: Likewise. 2021-01-13 Jonathan Wakely * doc/doxygen/user.cfg.in (INPUT): Remove include/debug/array. 2021-01-10 David Edelsohn PR libstdc++/98613 * testsuite/ext/vstring/cons/moveable.cc: Suppress false positive warning. * testsuite/ext/vstring/modifiers/assign/move_assign.cc: Same. 2021-01-08 Olivier Hainque * testsuite/20_util/bind/ref_neg.cc: Tweak the dg-prune-output regex for out-of-build-tree contexts. 2021-01-07 Thomas Rodgers * doc/doxygen/user.cfg.in: Add new header. * include/Makefile.am (std_headers): likewise. * include/Makefile.in: Regenerate. * include/precompiled/stdc++.h: Add new header. * include/std/barrier: New file. * include/std/version: Add __cpp_lib_barrier feature test macro. * testsuite/30_threads/barrier/1.cc: New test. * testsuite/30_threads/barrier/2.cc: Likewise. * testsuite/30_threads/barrier/arrive_and_drop.cc: Likewise. * testsuite/30_threads/barrier/arrive_and_wait.cc: Likewise. * testsuite/30_threads/barrier/arrive.cc: Likewise. * testsuite/30_threads/barrier/completion.cc: Likewise. 2021-01-07 Patrick Palka PR libstdc++/98384 * testsuite/20_util/to_chars/long_double.cc: Use nexttowardl instead of the non-standard nextupl and nextdownl. 2021-01-05 Samuel Thibault * configure: Re-generate. 2021-01-05 Ed Smith-Rowland <3dw4rd@verizon.net> * include/precompiled/stdc++.h: Add to C++20 section. 2021-01-01 Jakub Jelinek * ChangeLog-2020: Rotate ChangeLog. New file. Copyright (C) 2021 Free Software Foundation, Inc. Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved.