2020-11-13 Jonathan Wakely PR libstdc++/93421 * src/c++11/chrono.cc [_GLIBCXX_USE_CLOCK_GETTIME_SYSCALL] (syscall_timespec): Define a type suitable for SYS_clock_gettime calls. (system_clock::now(), steady_clock::now()): Use syscall_timespec instead of timespec. * src/c++11/futex.cc (syscall_timespec): Define a type suitable for SYS_futex and SYS_clock_gettime calls. (relative_timespec): Use syscall_timespec instead of timespec. (__atomic_futex_unsigned_base::_M_futex_wait_until): Likewise. (__atomic_futex_unsigned_base::_M_futex_wait_until_steady): Likewise. 2020-11-13 Jonathan Wakely PR libstdc++/93456 * src/c++11/futex.cc (relative_timespec): Remove redundant check negative values. * testsuite/30_threads/future/members/wait_until_overflow.cc: Moved to... * testsuite/30_threads/future/members/93456.cc: ...here. 2020-11-13 Jonathan Wakely * src/c++11/futex.cc (relative_timespec): Add [[unlikely]] attributes. (__atomic_futex_unsigned_base::_M_futex_wait_until) (__atomic_futex_unsigned_base::_M_futex_wait_until_steady): Check for overflow. * testsuite/30_threads/future/members/wait_until_overflow.cc: New test. 2020-11-13 Jonathan Wakely * src/c++11/futex.cc (relative_timespec): New function to create relative time from two absolute times. (__atomic_futex_unsigned_base::_M_futex_wait_until) (__atomic_futex_unsigned_base::_M_futex_wait_until_steady): Use relative_timespec. 2020-11-13 Jonathan Wakely * testsuite/30_threads/future/members/poll.cc: Require gthreads and add -pthread for targets that require it. Relax required ratio of wait_for calls before/after the future is ready. 2020-11-12 Jonathan Wakely * include/std/future (future::wait_for): Do not wait for durations less than or equal to zero. * src/c++11/futex.cc (_M_futex_wait_until) (_M_futex_wait_until_steady): Do not wait for timeouts before the epoch. * testsuite/30_threads/future/members/poll.cc: New test. 2020-11-12 Jonathan Wakely * include/ext/numeric_traits.h (__numeric_traits): Change primary template to always derive from __numeric_traits_integer. (__numeric_traits, __numeric_traits) (__numeric_traits): Add explicit specializations. 2020-11-12 Jonathan Wakely PR libstdc++/97798 * include/ext/numeric_traits.h (__glibcxx_signed) (__glibcxx_digits, __glibcxx_min, __glibcxx_max): Remove macros. (__is_integer_nonstrict::__width): Define new constant. (__numeric_traits_integer): Define constants in terms of each other and __is_integer_nonstrict::__width, rather than the removed macros. (_GLIBCXX_INT_N_TRAITS): Macro to define explicit specializations for non-standard integer types. 2020-11-11 Jonathan Yong <10walls@gmail.com> * acinclude.m4 (GLIBCXX_CHECK_LINKER_FEATURES): Exclude cygwin and mingw from relro linker test. * configure: Regenerate. 2020-11-11 Paul Scharnofske * include/std/thread (jthread::operator=(jthread&&)): Transfer any existing state to a temporary that will request a stop and then join. * testsuite/30_threads/jthread/jthread.cc: Test move assignment. 2020-11-11 Jonathan Wakely * include/std/stop_token (_Stop_state_t::_M_requester): Define new struct with members to store and check the thread ID. (_Stop_state_t::_M_request_stop()): Use _M_requester._M_set(). (_Stop_state_t::_M_remove_callback(_Stop_cb*)): Use _M_requester._M_is_current_thread(). 2020-11-11 Jonathan Wakely * include/std/ostream (__syncbuf_base): New class template. (emit_on_flush, noemit_on_flush, flush_emit): New manipulators. * include/std/syncstream (basic_syncbuf): Derive from __syncbuf_base instead of basic_streambuf. (basic_syncbuf::operator=): Remove self-assignment check. (basic_syncbuf::swap): Remove self-swap check. (basic_syncbuf::emit): Do not skip pubsync() call if sequence is empty. (basic_syncbuf::sync): Remove no-op pubsync on stringbuf. (basic_syncbuf::overflow): Define override. * testsuite/27_io/basic_syncstream/basic_ops/1.cc: Test basic_osyncstream::put(char_type). * testsuite/27_io/basic_ostream/emit/1.cc: New test. 2020-11-10 Jonathan Wakely * config/locale/generic/c_locale.cc (__set_C_locale()): New function to set the "C" locale and return the name of the previous locale. (__convert_to_v, __convert_to_v) (__convert_to_v): Use __set_C_locale and set failbit on error. 2020-11-10 Jonathan Wakely * include/std/sstream (basic_stringbug, basic_istringstream) (basic_ostringstream, basic_stringstream): Reorder C++20 constructors to be declared next to other constructors. 2020-11-10 Jonathan Wakely * config/abi/pre/gnu.ver (GLIBCXX_3.4.21): Tighten patterns. (GLIBCXX_3.4.29): Export new symbols. * include/bits/alloc_traits.h (__allocator_like): New concept. * include/std/sstream (basic_stringbuf::swap): Add exception specification. (basic_stringbuf::str() const): Add ref-qualifier. Use new _M_high_mark function. (basic_stringbuf::str(const SAlloc&) const): Define new function. (basic_stringbuf::str() &&): Likewise. (basic_stringbuf::str(const basic_string&)): Likewise. (basic_stringbuf::str(basic_string&&)): Likewise. (basic_stringbuf::view() const): Use _M_high_mark. (basic_istringstream::str, basic_ostringstream::str) (basic_stringstream::str): Define new overloads. * src/c++20/sstream-inst.cc (basic_stringbuf::str) (basic_istringstream::str, basic_ostringstream::str) (basic_stringstream::str): Explicit instantiation definitions for new overloads. * testsuite/27_io/basic_istringstream/view/char/1.cc: Add more checks. * testsuite/27_io/basic_istringstream/view/wchar_t/1.cc: Likewise. * testsuite/27_io/basic_ostringstream/view/char/1.cc: Likewise. * testsuite/27_io/basic_ostringstream/view/wchar_t/1.cc: Likewise. * testsuite/27_io/basic_stringstream/view/char/1.cc: Likewise. * testsuite/27_io/basic_stringstream/view/wchar_t/1.cc: Likewise. * testsuite/27_io/basic_istringstream/str/char/2.cc: New test. * testsuite/27_io/basic_istringstream/str/wchar_t/2.cc: New test. * testsuite/27_io/basic_ostringstream/str/char/3.cc: New test. * testsuite/27_io/basic_ostringstream/str/wchar_t/3.cc: New test. * testsuite/27_io/basic_stringbuf/str/char/4.cc: New test. * testsuite/27_io/basic_stringbuf/str/wchar_t/4.cc: New test. * testsuite/27_io/basic_stringstream/str/char/5.cc: New test. * testsuite/27_io/basic_stringstream/str/wchar_t/5.cc.cc: New test. 2020-11-10 Jonathan Wakely PR libstdc++/97415 * include/std/sstream (basic_stringbuf::_M_update_egptr) (basic_stringbuf::__xfer_bufptrs::__xfer_bufptrs): Check for null before comparing pointers. 2020-11-09 François Dumont * include/debug/array: Remove. * include/Makefile.am: Remove . * include/Makefile.in: Regenerate. * include/experimental/functional: Adapt. * include/std/array: Move to _GLIBCXX_INLINE_VERSION namespace. * include/std/functional: Adapt. * include/std/span: Adapt. * testsuite/23_containers/array/debug/back1_neg.cc: Remove dg-require-debug-mode. Add -D_GLIBCXX_ASSERTIONS option. * 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/element_access/60497.cc * testsuite/23_containers/array/tuple_interface/get_debug_neg.cc: Remove. * testsuite/23_containers/array/tuple_interface/get_neg.cc * testsuite/23_containers/array/tuple_interface/tuple_element_debug_neg.cc * testsuite/23_containers/array/tuple_interface/tuple_element_neg.cc 2020-11-09 François Dumont * include/debug/assertions.h (__glibcxx_requires_non_empty_range): Remove __builtin_expect. (__glibcxx_requires_subscript): Likewise. (__glibcxx_requires_nonempty): Likewise. * include/debug/formatter.h (__check_singular): Add C++11 constexpr qualification. * include/debug/helper_functions.h (__check_singular): Likewise. Skip check if constant evaluated. (__valid_range): Do not skip check if constant evaluated. * include/debug/macros.h (_GLIBCXX_DEBUG_VERIFY_COND_AT): Add __builtin_expect. (_GLIBCXX_DEBUG_VERIFY_AT_F): Use __glibcxx_assert_1. * testsuite/21_strings/basic_string_view/element_access/char/back_constexpr_neg.cc: New test. * testsuite/21_strings/basic_string_view/element_access/char/constexpr.cc: New test. * testsuite/21_strings/basic_string_view/element_access/char/constexpr_neg.cc: New test. * testsuite/21_strings/basic_string_view/element_access/char/front_back_constexpr.cc: New test. * testsuite/21_strings/basic_string_view/element_access/char/front_constexpr_neg.cc: New test. * testsuite/21_strings/basic_string_view/element_access/wchar_t/back_constexpr_neg.cc: New test. * testsuite/21_strings/basic_string_view/element_access/wchar_t/constexpr.cc: New test. * testsuite/21_strings/basic_string_view/element_access/wchar_t/constexpr_neg.cc: New test. * testsuite/21_strings/basic_string_view/element_access/wchar_t/front_constexpr_neg.cc: New test. * testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_neg.cc: New test. * testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_pred_neg.cc: New test. * testsuite/25_algorithms/lower_bound/debug/constexpr_valid_range_neg.cc: New test. * testsuite/25_algorithms/lower_bound/debug/partitioned_neg.cc: New test. * testsuite/25_algorithms/lower_bound/debug/partitioned_pred_neg.cc: New test. * testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_neg.cc: New test. * testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_pred_neg.cc: New test. * testsuite/25_algorithms/upper_bound/debug/constexpr_valid_range_neg.cc: New test. * testsuite/25_algorithms/upper_bound/debug/partitioned_neg.cc: New test. * testsuite/25_algorithms/upper_bound/debug/partitioned_pred_neg.cc: New test. 2020-11-09 Jonathan Wakely * include/bits/uniform_int_dist.h (__detail::_Power_of_2): Document that true result for zero is intentional. 2020-11-09 Jonathan Wakely * include/std/bit (__popcount): Remove redundant check for zero. 2020-11-09 Jonathan Wakely PR libstdc++/97729 * libsupc++/exception_ptr.h (exception_ptr::exception_ptr()) (exception_ptr::exception_ptr(const exception_ptr&)) (exception_ptr::~exception_ptr()): Remove 'always_inline' attributes. Use 'inline' unconditionally. 2020-11-09 Jonathan Wakely PR libstdc++/97758 * include/bits/std_function.h [!__cpp_rtti]: Include . 2020-11-07 Liu Hao * libsupc++/cxxabi.h: (__cxa_atexit): mark with _GLIBCXX_CDTOR_CALLABI (__cxa_thread_atexit): ditto * libsupc++/atexit_thread.cc: (__cxa_atexit): mark with _GLIBCXX_CDTOR_CALLABI (__cxa_thread_atexit): ditto (elt): ditto 2020-11-06 Jonathan Wakely * config/abi/pre/gnu.ver (GLIBCXX_3.4.21): Tighten up patterns for basic_stringbuf that refer to __xfer_bufptrs. 2020-11-05 Marek Polacek PR c++/25814 * testsuite/20_util/reference_wrapper/lwg2993.cc: Add a dg-warning. * testsuite/25_algorithms/generate_n/87982_neg.cc: Likewise. 2020-11-05 Jonathan Wakely PR libstdc++/96269 * include/std/optional (operator==, operator!=, operator<) (operator>, operator<=, operator>=): Fix types used in SFINAE constraints. * testsuite/20_util/optional/relops/96269.cc: New test. 2020-11-05 Jonathan Wakely PR libstdc++/97731 * src/filesystem/dir.cc (recursive_directory_iterator): Call the right overload of _Dir::advance. * testsuite/experimental/filesystem/iterators/97731.cc: New test. 2020-11-05 Jonathan Wakely PR libstdc++/97729 * include/std/future (__basic_future::_M_get_result): Use nullptr for null pointer constant. * libsupc++/eh_ptr.cc (operator==, operator!=): Remove definitions. * libsupc++/exception_ptr.h (_GLIBCXX_EH_PTR_USED): Define macro to conditionally add __attribute__((__used__)). (operator==, operator!=, exception_ptr::exception_ptr()) (exception_ptr::exception_ptr(const exception_ptr&)) (exception_ptr::~exception_ptr()) (exception_ptr::operator=(const exception_ptr&)) (exception_ptr::swap(exception_ptr&)): Always define as inline. Add macro to be conditionally "used". 2020-11-05 Jonathan Wakely PR libstdc++/97729 * config/abi/pre/gnu.ver (GLIBCXX_3.4.29): Add exports. * src/c++20/sstream-inst.cc (basic_stringbuf): Instantiate private constructor taking __xfer_bufptrs. 2020-11-05 Jonathan Wakely * include/std/sstream (basic_stringbuf(const allocator_type&): Add explicit. (basic_stringbuf(const basic_string&, openmode, const A&)): Call _M_stringbuf_init. Construct _M_string from pointer and length to avoid constraint checks for string view. (basic_stringbuf::view()): Make __sv_type alias local to the function. (basic_istringstream(const basic_string&, openmode, const A&)): Pass string to _M_streambuf instead of constructing a temporary with the wrong allocator. (basic_ostringstream(const basic_string&, openmode, const A&)): Likewise. (basic_stringstream(const basic_string&, openmode, const A&)): Likewise. * src/c++20/sstream-inst.cc: Use string_view and wstring_view typedefs in explicit instantiations. * testsuite/27_io/basic_istringstream/cons/char/1.cc: Add more tests for constructors. * testsuite/27_io/basic_ostringstream/cons/char/1.cc: Likewise. * testsuite/27_io/basic_stringbuf/cons/char/1.cc: Likewise. * testsuite/27_io/basic_stringbuf/cons/char/2.cc: Likewise. * testsuite/27_io/basic_stringbuf/cons/wchar_t/1.cc: Likewise. * testsuite/27_io/basic_stringbuf/cons/wchar_t/2.cc: Likewise. * testsuite/27_io/basic_stringstream/cons/char/1.cc: Likewise. 2020-11-05 Jonathan Wakely * include/std/sstream: Adjust whitespace. 2020-11-04 Jonathan Wakely PR libstdc++/97719 * include/std/sstream (basic_stringstream(string_type&&, openmode)): Fix default argument. * testsuite/27_io/basic_stringstream/cons/char/97719.cc: New test. 2020-11-04 Jonathan Wakely * testsuite/18_support/96817.cc: Fail fast if the library is configured to not use futexes. 2020-11-04 Jonathan Wakely PR libstdc++/94971 * include/bits/stl_algo.h (search(FIter, FIter, const Searcher): Adjust #if condition. * include/parallel/algo.h (search(FIter, FIter, const Searcher&): Define new overload for C++17. 2020-11-04 Jonathan Wakely PR libstdc++/92285 * doc/xml/manual/evolution.xml: Document change to base class. * doc/html/manual/api.html: Regenerate. 2020-11-04 Jonathan Wakely * include/bits/uniform_int_dist.h (uniform_int_distribution::_S_nd): Use qualified-id to refer to static member functions. 2020-11-03 Jonathan Wakely * include/std/syncstream: Include unconditionally. 2020-11-03 François Dumont * config/abi/pre/gnu-versioned-namespace.ver: Add __istream_extract and _Safe_local_iterator_base::_M_attach_single symbols. 2020-11-03 Jonathan Wakely * src/c++11/mutex.cc [_GLIBCXX_HAVE_TLS] (__once_proxy): Define separately for TLS targets. [!_GLIBCXX_HAVE_TLS] (__get_once_functor_lock_ptr): Replace with ... (set_lock_ptr): ... this. Set new value and return previous value. [!_GLIBCXX_HAVE_TLS] (__set_once_functor_lock_ptr): Adjust to use set_lock_ptr. [!_GLIBCXX_HAVE_TLS] (__once_proxy): Likewise. 2020-11-03 Jonathan Wakely PR libstdc++/55394 PR libstdc++/66146 PR libstdc++/84323 * config/abi/pre/gnu.ver (GLIBCXX_3.4.29): Add new symbols. * include/std/mutex [!_GLIBCXX_HAS_GTHREADS] (once_flag): Define even when gthreads is not supported. (once_flag::_M_once) [_GLIBCXX_HAVE_LINUX_FUTEX]: Change type from __gthread_once_t to int. (once_flag::_M_passive(), once_flag::_M_activate()) (once_flag::_M_finish(bool), once_flag::_Active_execution): Define new members for futex and non-threaded implementation. [_GLIBCXX_HAS_GTHREADS] (once_flag::_Prepare_execution): New RAII helper type. (call_once): Use new members of once_flag. * src/c++11/mutex.cc (std::once_flag::_M_activate): Define. (std::once_flag::_M_finish): Define. * testsuite/30_threads/call_once/39909.cc: Do not require gthreads. * testsuite/30_threads/call_once/49668.cc: Likewise. * testsuite/30_threads/call_once/60497.cc: Likewise. * testsuite/30_threads/call_once/call_once1.cc: Likewise. * testsuite/30_threads/call_once/dr2442.cc: Likewise. * testsuite/30_threads/call_once/once_flag.cc: Add test for constexpr constructor. * testsuite/30_threads/call_once/66146.cc: New test. * testsuite/30_threads/call_once/constexpr.cc: Removed. * testsuite/30_threads/once_flag/cons/constexpr.cc: Removed. 2020-11-03 Jonathan Yong <10walls@gmail.com> * src/Makefile.am (libstdc___la_LINK): Add lt_host_flags. * src/Makefile.in: Regenerate. 2020-11-02 Thomas Rodgers * doc/doxygen/user.cfg.in (INPUT): Add new header. * include/Makefile.am (std_headers): Add new header. * include/Makefile.in: Regenerate. * include/precompiled/stdc++.h: Include new header. * include/std/syncstream: New header. * include/std/version: Add __cpp_lib_syncbuf. * testsuite/27_io/basic_syncbuf/1.cc: New test. * testsuite/27_io/basic_syncbuf/2.cc: Likewise. * testsuite/27_io/basic_syncbuf/basic_ops/1.cc: Likewise. * testsuite/27_io/basic_syncbuf/requirements/types.cc: Likewise. * testsuite/27_io/basic_syncbuf/sync_ops/1.cc: Likewise. * testsuite/27_io/basic_syncstream/1.cc: Likewise. * testsuite/27_io/basic_syncstream/2.cc: Likewise. * testsuite/27_io/basic_syncstream/basic_ops/1.cc: Likewise. * testsuite/27_io/basic_syncstream/requirements/types.cc: Likewise. 2020-11-01 Jonathan Wakely * include/std/type_traits (is_integral) (make_unsigned, make_signed): Define based on #ifdef __WCHAR_TYPE__ instead of _GLIBCXX_USE_WCHAR_T. * include/bits/cpp_type_traits.h (__is_integer) (__is_char): Likewise. 2020-10-31 François Dumont * src/c++17/floating_from_chars.cc (_GLIBCXX_USE_CX11_ABI): Add define. (buffering_string): New. [!_GLIBCXX_USE_CXX11_ABI](reserve_string): New. (from_chars): Adapt. * src/c++20/sstream-inst.cc: Limit instantiations to _GLIBCXX_USE_CXX11_ABI. 2020-10-31 Jonathan Wakely * include/bits/random.h (independent_bit_engine): Fix typo in comment. (shuffle_order_engine): Fix incorrect description in comment. * include/bits/random.tcc (__representable_as_double (__p1_representable_as_double): New helper functions. (shuffle_order_engine::operator()): Use double for calculation if (max() - min() + 1) is representable as double. * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error line number. 2020-10-31 Jonathan Wakely PR libstdc++/96958 * include/bits/hashtable_policy.h (_Prime_rehash_policy) (_Power2_rehash_policy): Use ceil and floor instead of ceill and floorl. * src/c++11/hashtable_c++0x.cc (_Prime_rehash_policy): Likewise. Use double instead of long double. 2020-10-31 Patrick Palka PR libstdc++/97600 * include/std/ranges (basic_istream_view::begin): Initialize _Iterator from 'this' instead of '*this'. (basic_istream_view::_Iterator::_Iterator): Adjust constructor accordingly. (filter_view::_Iterator::_Iterator): Take a filter_view* argument instead of a filter_view& argument. (filter_view::_Sentinel::_Sentinel): Likewise. (filter_view::begin): Initialize _Iterator from 'this' instead of '*this'. (filter_view::end): Likewise. (transform_view::_Iterator::_Iterator): Take a _Parent* instead of a _Parent&. (filter_view::_Iterator::operator+): Adjust accordingly. (filter_view::_Iterator::operator-): Likewise. (filter_view::begin): Initialize _Iterator from 'this' instead of '*this'. (filter_view::end): Likewise. (join_view::_Iterator): Take a _Parent* instead of a _Parent&. (join_view::_Sentinel): Likewise. (join_view::begin): Initialize _Iterator from 'this' instead of '*this'. (join_view::end): Initialize _Sentinel from 'this' instead of '*this'. (split_view::_OuterIter): Take a _Parent& instead of a _Parent*. (split_view::begin): Initialize _OuterIter from 'this' instead of '*this'. (split_view::end): Likewise. * testsuite/std/ranges/97600.cc: New test. 2020-10-30 Jonathan Wakely * include/std/ranges (enable_borrowed_view>) (enable_borrowed_view>) (enable_borrowed_view>) (enable_borrowed_view>) (enable_borrowed_view>) (enable_borrowed_view>): Add partial specializations as per P2017R1. * testsuite/std/ranges/adaptors/conditionally_borrowed.cc: New test. 2020-10-30 Jonathan Wakely PR libstdc++/96958 * include/bits/hashtable_policy.h (_Prime_rehash_policy) (_Power2_rehash_policy): Use double instead of long double. 2020-10-30 Jonathan Wakely * testsuite/23_containers/vector/bool/modifiers/insert/31370.cc: Avoid -Wcatch-value warnings. 2020-10-30 Patrick Palka * include/std/ranges (__detail::__box): For the partial specialization used by types that are already semiregular, make the default constructor value-initialize the underlying object instead of default-initializing it. Make its in place constructor explicit. * testsuite/std/ranges/adaptors/detail/semiregular_box.cc: Augment test. 2020-10-30 David Edelsohn * testsuite/20_util/unique_ptr/creation/for_overwrite.cc: XFAIL on AIX. 2020-10-29 Jonathan Wakely * config/abi/pre/gnu.ver (GLIBCXX_3.4.21): Tighten patterns for old symbols some more. 2020-10-29 Jonathan Wakely * include/bits/ranges_util.h (subrange::subrange(R&&)): Use direct-initialization instead of list-initialization, so a potential narrowing conversion from ranges::size(r) to the stored size isn't ill-formed. 2020-10-29 Jonathan Wakely * include/bits/parse_numbers.h (_Select_int_base): Avoid narrowing conversion in constant expression. * include/experimental/buffer (buffer_copy): Avoid narrowing conversion. * include/experimental/internet (hash<>::operator()): Do not use deprecated 'argument_type' member. * include/std/variant (variant::emplace): Use cast instead of implicit conversion from size_t to narrower unsigned type. 2020-10-29 Jonathan Wakely * include/tr1/shared_ptr.h (__shared_count, __shared_ptr) (shared_ptr): Add diagnostic pragmas around uses of auto_ptr. * testsuite/tr1/2_general_utilities/shared_ptr/cons/43820_neg.cc: Adust dg-error line numbers. 2020-10-29 Jonathan Wakely * testsuite/18_support/96817.cc: Avoid -Wunused warnings. * testsuite/20_util/any/assign/2.cc: Likewise. * testsuite/20_util/any/cons/2.cc: Likewise. * testsuite/20_util/align/1.cc: Avoid -Wsign-compare warning. * testsuite/20_util/function/65760.cc: Avoid -Wunused warning. * testsuite/20_util/function/1.cc: Avoid -Wcatch-value warning. * testsuite/20_util/function/cons/move_target.cc: Avoid -Wunused warning. * testsuite/20_util/headers/memory/synopsis.cc: Add exception specification. * testsuite/20_util/monotonic_buffer_resource/allocate.cc: Avoid -Wsign-compare warning. * testsuite/20_util/tuple/cons/deduction.cc: Avoid -Wunused warning. * testsuite/20_util/specialized_algorithms/uninitialized_copy/808590-cxx11.cc: Avoid -Wdeprecated-copy warning. * testsuite/21_strings/basic_string/56166.cc: Avoid -Wcatch-value warning. * testsuite/21_strings/basic_string/numeric_conversions/char/stod.cc: Avoid -Wcatch-value warnings. * testsuite/21_strings/basic_string/numeric_conversions/char/stof.cc: Likewise. * testsuite/21_strings/basic_string/numeric_conversions/char/stoi.cc: Likewise. * testsuite/21_strings/basic_string/numeric_conversions/char/stol.cc: Likewise. * testsuite/21_strings/basic_string/numeric_conversions/char/stold.cc: Likewise. * testsuite/21_strings/basic_string/numeric_conversions/char/stoll.cc: Likewise. * testsuite/21_strings/basic_string/numeric_conversions/char/stoul.cc: Likewise. * testsuite/21_strings/basic_string/numeric_conversions/char/stoull.cc: Likewise. * testsuite/21_strings/basic_string/numeric_conversions/wchar_t/stod.cc: Likewise. * testsuite/21_strings/basic_string/numeric_conversions/wchar_t/stof.cc: Likewise. * testsuite/21_strings/basic_string/numeric_conversions/wchar_t/stoi.cc: Likewise. * testsuite/21_strings/basic_string/numeric_conversions/wchar_t/stol.cc: Likewise. * testsuite/21_strings/basic_string/numeric_conversions/wchar_t/stold.cc: Likewise. * testsuite/21_strings/basic_string/numeric_conversions/wchar_t/stoll.cc: Likewise. * testsuite/21_strings/basic_string/numeric_conversions/wchar_t/stoul.cc: Likewise. * testsuite/21_strings/basic_string/numeric_conversions/wchar_t/stoull.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/compare/char/nonnull.cc: Prune additional diagnostics. * testsuite/21_strings/basic_string_view/operations/find/char/nonnull.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/rfind/char/nonnull.cc: Likewise. * testsuite/21_strings/headers/string/synopsis.cc: Add exception specifications. * testsuite/22_locale/locale/cons/12352.cc: Define sized delete operators to avoid warnings. * testsuite/23_containers/deque/modifiers/swap/1.cc: Add exception specification. * testsuite/23_containers/forward_list/cons/11.cc: Avoid -Wdeprecated-copy warning. * testsuite/23_containers/headers/bitset/synopsis.cc: Add exception specification. * testsuite/23_containers/headers/deque/synopsis.cc: Likewise. * testsuite/23_containers/headers/forward_list/synopsis.cc: Likewise. * testsuite/23_containers/headers/list/synopsis.cc: Likewise. * testsuite/23_containers/headers/map/synopsis.cc: Likewise. * testsuite/23_containers/headers/queue/synopsis.cc: Likewise. * testsuite/23_containers/headers/set/synopsis.cc: Likewise. * testsuite/23_containers/headers/vector/synopsis.cc: Likewise. * testsuite/23_containers/list/modifiers/swap/1.cc: Likewise. * testsuite/23_containers/map/modifiers/swap/1.cc: Likewise. * testsuite/23_containers/multimap/modifiers/swap/1.cc: Likewise. * testsuite/23_containers/multiset/modifiers/swap/1.cc: Likewise. * testsuite/23_containers/set/modifiers/swap/1.cc: Likewise. * testsuite/23_containers/unordered_set/56267-2.cc: Avoid -Wdeprecated-copy warning. * testsuite/23_containers/vector/bool/23632.cc: Avoid -Wempty-body warning. * testsuite/23_containers/vector/modifiers/swap/1.cc: Add exception specification. * testsuite/25_algorithms/heap/moveable2.cc: Fix misplaced parentheses around arguments. * testsuite/25_algorithms/sample/1.cc: Use return value. * testsuite/25_algorithms/search/searcher.cc: Avoid -Wunused warnings. * testsuite/27_io/basic_ostream/exceptions/char/9561.cc: Likewise. * testsuite/27_io/basic_ostream/exceptions/wchar_t/9561.cc: Likewise. * testsuite/27_io/filesystem/operations/remove_all.cc: Avoid -Wsign-compare warning. * testsuite/experimental/any/assign/2.cc: Avoid -Wunused warnings. * testsuite/experimental/any/cons/2.cc: Likewise. * testsuite/experimental/filesystem/operations/remove_all.cc: Avoid -Wign-compare warning. * testsuite/experimental/memory/observer_ptr/cons/cons.cc: Likewise. * testsuite/experimental/memory_resource/null_memory_resource.cc: Likewise. * testsuite/experimental/source_location/1.cc: Avoid -Waddress warning. * testsuite/ext/pod_char_traits.cc: Avoid -Wunused warning. * testsuite/ext/vstring/modifiers/clear/56166.cc: Avoid -Wcatch-value. * testsuite/std/concepts/concepts.lang/concept.swappable/swap.cc: Avoid -Wunused warning. * testsuite/std/concepts/concepts.lang/concept.swappable/swappable.cc: Likewise. * testsuite/tr1/2_general_utilities/shared_ptr/cons/43820_neg.cc: Prune additional warnings. * testsuite/tr1/3_function_objects/function/1.cc: Avoid -Wcatch-value warning. * testsuite/util/replacement_memory_operators.h: Define sized delete to avoid warnings. * testsuite/util/testsuite_api.h (_NonDefaultConstructible): Add user-declared assignment operator to stop -Wdeprecated-copy warnings. * testsuite/util/testsuite_containers.h: Avoid -Wunused warning. * testsuite/util/testsuite_iterators.h: Avoid -Wsign-compare warnings. * testsuite/util/testsuite_new_operators.h: Define sized deleted. 2020-10-29 Jonathan Wakely * testsuite/25_algorithms/all_of/constexpr.cc: Check result of the algorithm. * testsuite/25_algorithms/any_of/constexpr.cc: Likewise. * testsuite/25_algorithms/binary_search/constexpr.cc: Likewise. * testsuite/25_algorithms/copy_backward/constexpr.cc: Likewise. * testsuite/25_algorithms/count/constexpr.cc: Likewise. * testsuite/25_algorithms/equal/constexpr.cc: Likewise. * testsuite/25_algorithms/equal_range/constexpr.cc: Likewise. * testsuite/25_algorithms/fill/constexpr.cc: Likewise. * testsuite/25_algorithms/find_end/constexpr.cc: Likewise. * testsuite/25_algorithms/find_if/constexpr.cc: Likewise. * testsuite/25_algorithms/is_partitioned/constexpr.cc: Likewise. * testsuite/25_algorithms/is_permutation/constexpr.cc: Likewise. * testsuite/25_algorithms/is_sorted_until/constexpr.cc: Likewise. * testsuite/25_algorithms/lexicographical_compare/constexpr.cc: Likewise. * testsuite/25_algorithms/lower_bound/constexpr.cc: Likewise. * testsuite/25_algorithms/merge/constexpr.cc: Likewise. * testsuite/25_algorithms/mismatch/constexpr.cc: Likewise. * testsuite/25_algorithms/none_of/constexpr.cc: Likewise. * testsuite/25_algorithms/partition_copy/constexpr.cc: Likewise. * testsuite/25_algorithms/remove_copy/constexpr.cc: Likewise. * testsuite/25_algorithms/remove_copy_if/constexpr.cc: Likewise. * testsuite/25_algorithms/remove_if/constexpr.cc: Likewise. * testsuite/25_algorithms/replace_if/constexpr.cc: Likewise. * testsuite/25_algorithms/reverse/constexpr.cc: Likewise. * testsuite/25_algorithms/reverse_copy/constexpr.cc: Likewise. * testsuite/25_algorithms/rotate_copy/constexpr.cc: Likewise. * testsuite/25_algorithms/search/constexpr.cc: Likewise. * testsuite/25_algorithms/set_difference/constexpr.cc: Likewise. * testsuite/25_algorithms/set_intersection/constexpr.cc: Likewise. * testsuite/25_algorithms/set_symmetric_difference/constexpr.cc: Likewise. * testsuite/25_algorithms/set_union/constexpr.cc: Likewise. * testsuite/25_algorithms/unique_copy/constexpr.cc: Likewise. * testsuite/25_algorithms/upper_bound/constexpr.cc: Likewise. 2020-10-29 Jonathan Wakely * include/bits/uniform_int_dist.h (_Power_of_two): Add constexpr. (uniform_int_distribution::_S_nd): Add static_assert to ensure the wider type is twice as wide as the result type. (uniform_int_distribution::__generate_impl): Add static_assert and declare variables as constexpr where appropriate. (uniform_int_distribution:operator()): Likewise. Only consider the uniform random bit generator's range of possible results when deciding whether _S_nd can be used, not the __uctype type. 2020-10-29 Jonathan Wakely * include/ext/rope (_Refcount_Base::_M_ref_count): Remove volatile qualifier. (_Refcount_Base::_M_decr()): Likewise. 2020-10-29 Jonathan Wakely * include/bits/std_function.h (_Function_handler): Define explicit specialization used for invalid target types. (_Base_manager::_M_manager) [!__cpp_rtti]: Return null. (function::target_type()): Check for null pointer. (function::target()): Define unconditionall. Fix bug with const_cast of function pointer type. (function::target() const): Define unconditionally, but only use RTTI if enabled. * testsuite/20_util/function/target_no_rtti.cc: New test. 2020-10-29 Patrick Palka * testsuite/25_algorithms/lexicographical_compare/constrained.cc: (test03): Fix initializing the vector vy with the array y of size 4. 2020-10-29 Jonathan Wakely * include/bits/hashtable_policy.h (_Local_iterator_base): Cast value to avoid -Wsign-compare warnings. * include/bits/regex.h (sub_match::_M_str): Avoid narrowing conversion. * include/bits/regex_compiler.tcc (_Compiler::_M_quantifier): Initialize variable to avoid -Wmaybe-uninitialized warning. * include/bits/shared_ptr_base.h (_Sp_counted_deleter::_Impl): Reorder mem-initializer-list to avoid -Wreorder warning. * include/bits/stl_tree.h (_Rb_tree_impl): Explicitly initialize base class in copy constructor. * include/debug/safe_iterator.h (_Safe_iterator): Likewise. * include/ext/debug_allocator.h: Reorder mem-initializer-list to avoid -Wreorder warning. * include/ext/throw_allocator.h (throw_allocator_limit) (throw_allocator_random): Add user-declared assignment operators to avoid -Wdeprecated-copy warnings. 2020-10-29 Jonathan Wakely * include/bits/uniform_int_dist.h (uniform_int_distribution): Rename _UniformRandomNumberGenerator template parameters to _UniformRandomBitGenerator, as per P0346R1. 2020-10-29 Jonathan Wakely * include/std/sstream (basic_stringbuf(__string_type&&, openmode)): Call _M_init_syncbuf to set up get/put areas. Also qualify std::move. 2020-10-28 Jonathan Wakely * config/abi/pre/gnu.ver (GLIBCXX_3.4.29): Remove duplicate patterns. (CXXABI_1.3.13): Restore missing piece. 2020-10-28 Thomas Rodgers * acinclude.m4 (glibcxx_SUBDIRS): Add src/c++20. * config/abi/pre/gnu.ver (GLIBCXX_3.4.29): New symbols. * configure: Regenerate. * include/std/sstream: (basic_stringbuf::basic_stringbuf(allocator const&)): New constructor. (basic_stringbuf::basic_stringbuf(openmode, allocator const&)): Likewise. (basic_stringbuf::basic_stringbuf(basic_string&&, openmode)): Likewise. (basic_stringbuf::basic_stringbuf(basic_stringbuf&&, allocator const&)): Likewise. (basic_stringbuf::get_allocator()): New method. (basic_stringbuf::view()): Likewise. (basic_istringstream::basic_istringstream(basic_string&&, openmode)): New constructor. (basic_istringstream::basic_istringstream(openmode, allocator const&)): Likewise (basic_istringstream::view()): New method. (basic_ostringstream::basic_ostringstream(basic_string&&, openmode)): New constructor. (basic_ostringstream::basic_ostringstream(openmode, allocator const&)): Likewise (basic_ostringstream::view()): New method. (basic_stringstream::basic_stringstream(basic_string&&, openmode)): New constructor. (basic_stringstream::basic_stringstream(openmode, allocator const&)): Likewise (basic_stringstream::view()): New method. * src/Makefile.in: Add c++20 directory. * src/Makefile.am: Regenerate. * src/c++20/Makefile.am: Add makefile for new sub-directory. * src/c++20/Makefile.in: Generate. * src/c++20/sstream-inst.cc: New file defining explicit instantiations for basic_stringbuf, basic_istringstream, basic_ostringstream, and basic_stringstream member functions added in C++20. * testsuite/27_io/basic_stringbuf/cons/char/2.cc: New test. * testsuite/27_io/basic_stringbuf/cons/wchar_t/2.cc: Likewise. * testsuite/27_io/basic_stringbuf/view/char/1.cc: Likewise. * testsuite/27_io/basic_stringbuf/view/wchar_t/1.cc: Likewise. * testsuite/27_io/basic_istringstream/cons/char/1.cc: Likewise. * testsuite/27_io/basic_istringstream/cons/wchar_t/1.cc: Likewise. * testsuite/27_io/basic_istringstream/view/char/1.cc: Likewise. * testsuite/27_io/basic_istringstream/view/wchar_t/1.cc: Likewise. * testsuite/27_io/basic_ostringstream/cons/char/1.cc: Likewise. * testsuite/27_io/basic_ostringstream/cons/wchar_t/1.cc: Likewise. * testsuite/27_io/basic_ostringstream/view/char/1.cc: Likewise. * testsuite/27_io/basic_ostringstream/view/wchar_t/1.cc: Likewise. * testsuite/27_io/basic_stringstream/cons/char/1.cc: Likewise. * testsuite/27_io/basic_stringstream/cons/wchar_t/1.cc: Likewise. * testsuite/27_io/basic_stringstream/view/char/1.cc: Likewise. * testsuite/27_io/basic_stringstream/view/wchar_t/1.cc: Likewise. 2020-10-28 Patrick Palka PR libstdc++/97613 * include/std/chrono (year_month_weekday::operator sys_days): Cast the result of index() to int so that the initializer for days{} is sign-extended when it's converted to the underlying type. * testsuite/std/time/year_month_weekday/3.cc: New test. 2020-10-28 Jonathan Wakely * libsupc++/new_opnt.cc (new): Add comment about forced unwind exceptions. 2020-10-28 Jonathan Wakely PR libstdc++/94268 * config/os/mingw32-w64/os_defines.h (_GLIBCXX_BUFSIZ): Define. * config/os/mingw32/os_defines.h (_GLIBCXX_BUFSIZ): Define. * include/bits/fstream.tcc: Use _GLIBCXX_BUFSIZ instead of BUFSIZ. * include/ext/stdio_filebuf.h: Likewise. * include/std/fstream (_GLIBCXX_BUFSIZ): Define. 2020-10-28 Jonathan Wakely PR libstdc++/95592 * include/bits/valarray_after.h (_DEFINE_EXPR_UNARY_OPERATOR) (_DEFINE_EXPR_BINARY_OPERATOR, _DEFINE_EXPR_BINARY_FUNCTION): Use elaborated-type-specifier and qualified-id to avoid ambiguities with QNX system headers. * testsuite/26_numerics/valarray/95592.cc: New test. 2020-10-28 Jonathan Wakely PR libstdc++/95609 * include/std/span (span): Reorder data members to match common implementations of struct iovec. * testsuite/23_containers/span/layout_compat.cc: New test. 2020-10-27 Jonathan Wakely * include/std/functional (std::_Placeholder): Define for C++98 as well as later standards. * include/tr1/functional (std::placeholders::_1 etc): Declare for C++98. (tr1::_Placeholder): Replace with using-declaration for std::_Placeholder. (tr1::placeholders::_1 etc.): Replace with using-directive for std::placeholders. 2020-10-27 Jonathan Wakely * include/tr1/ell_integral.tcc (__ellint_rf, __ellint_rd) (__ellint_rc, __ellint_rj): Remove unused variables. * include/tr1/modified_bessel_func.tcc (__airy): Likewise. 2020-10-27 Jonathan Wakely * include/bits/locale_conv.h (__str_codecvt_out_all): Add cast to compare operands of the same signedness. * include/bits/locale_facets_nonio.tcc (time_get::_M_extract_wday_or_month): Likewise. * include/bits/sstream.tcc (basic_stringbuf::overflow): Likewise. * include/tr1/legendre_function.tcc (__sph_legendre): Use unsigned for loop variable. 2020-10-27 Jonathan Wakely * include/std/charconv (from_chars): Add noexcept to match definitions in src/c++17/floating_from_chars.cc 2020-10-27 Jonathan Wakely * src/c++17/fs_dir.cc (fs::directory_iterator::operator*): Add noexcept. Do not throw on precondition violation. 2020-10-27 Jonathan Wakely * include/bits/fs_path.h (path::_List::begin, path::_List::end): Add noexcept to match definitions in src/c++17/fs_path.cc. 2020-10-27 Jonathan Wakely * testsuite/experimental/memory_resource/new_delete_resource.cc: Add missing header. * testsuite/experimental/memory_resource/resource_adaptor.cc: Likewise. 2020-10-26 Jonathan Wakely * include/experimental/executor (strand::_State): Fix thinko. 2020-10-26 Ville Voutilainen * include/std/type_traits (__is_nt_constructible_impl): Remove. (__is_nothrow_constructible_impl): Adjust. (is_nothrow_default_constructible): Likewise. (__is_nt_assignable_impl): Remove. (__is_nothrow_assignable_impl): Adjust. 2020-10-26 Jonathan Wakely PR libstdc++/97570 * libsupc++/new_opa.cc: Declare size_t in global namespace. Remove unused header. 2020-10-26 Stephan Bergmann * include/bits/shared_ptr_base.h (_Sp_counted_base::_M_add_ref_lock_nothrow(): Add noexcept to definitions to match declaration. (__shared_count(const __weak_count&, nothrow_t)): Add noexcept to declaration to match definition. 2020-10-23 Patrick Palka * include/std/ranges (single_view::single_view): Mark the in place constructor explicit as per LWG 3428. (take_view): Remove the constraint on the deduction guide's template parameter as per LWG 3447. 2020-10-23 Jonathan Wakely * include/experimental/memory_resource: Include . (polymorphic_allocator::construct): Qualify forward_as_tuple. * include/std/memory_resource: Likewise. 2020-10-22 Jonathan Wakely * testsuite/30_threads/condition_variable/members/68519.cc: Define recent_epoch_float_clock::duration to meet the Cpp17Clock requirements. 2020-10-22 Jonathan Wakely * include/std/shared_mutex: Only include when pthread_rwlock_t and POSIX timers are not available. (__cpp_lib_shared_mutex, __cpp_lib_shared_timed_mutex): Change value to be type 'long'. * include/std/version (__cpp_lib_shared_mutex) (__cpp_lib_shared_timed_mutex): Likewise. 2020-10-22 Jonathan Wakely * include/Makefile.am: Add new header. * include/Makefile.in: Regenerate. * include/bits/shared_ptr.h: Include . * include/bits/shared_ptr_base.h: Include required headers here directly, instead of in . * include/bits/uses_allocator_args.h: New file. Move utility functions for uses-allocator construction from to here. Only define the utility functions when concepts are available. (__cpp_lib_make_obj_using_allocator): Define non-standard feature test macro. * include/std/condition_variable: Remove unused headers. * include/std/future: Likewise. * include/std/memory: Remove headers that are not needed directly, and are now inclkuded where they're needed. Include new header. * include/std/memory_resource: Include only the necessary headers. Use new feature test macro to detect support for the utility functions. * include/std/scoped_allocator: Likewise. * include/std/version (__cpp_lib_make_obj_using_allocator): Define. 2020-10-22 Olivier Hainque * crossconfig.m4: Turn vxworks matcher into vxworks*. * configure.host: Likewise. * configure: Regenerate. 2020-10-21 Jonathan Wakely * include/bits/shared_ptr.h (shared_ptr(const weak_ptr&, nothrow_t)): Add noexcept. * include/bits/shared_ptr_base.h (_Sp_counted_base::_M_add_ref_lock): Remove specializations and just call _M_add_ref_lock_nothrow. (__shared_count, __shared_ptr): Use nullptr for null pointer constants. (__shared_count(const __weak_count&)): Use _M_add_ref_lock_nothrow instead of _M_add_ref_lock. (__shared_count(const __weak_count&, nothrow_t)): Add noexcept. (__shared_ptr::operator bool()): Add noexcept. (__shared_ptr(const __weak_ptr&, nothrow_t)): Add noexcept. 2020-10-21 Jonathan Wakely PR libstdc++/97512 * include/bits/ranges_util.h (tuple_size) (tuple_element): Move here from ... * include/std/ranges: ... here. * testsuite/std/ranges/subrange/97512.cc: New test. 2020-10-21 Thomas Rodgers * include/pstl/algorithm_impl.h: Update file. * include/pstl/execution_impl.h: Likewise. * include/pstl/glue_algorithm_impl.h: Likewise. * include/pstl/glue_memory_impl.h: Likewise. * include/pstl/glue_numeric_impl.h: Likewise. * include/pstl/memory_impl.h: Likewise. * include/pstl/numeric_impl.h: Likewise. * include/pstl/parallel_backend.h: Likewise. * include/pstl/parallel_backend_serial.h: Likewise. * include/pstl/parallel_backend_tbb.h: Likewise. * include/pstl/parallel_backend_utils.h: Likewise. * include/pstl/pstl_config.h: Likewise. * include/pstl/unseq_backend_simd.h: Likewise. 2020-10-20 François Dumont * include/bits/hashtable_policy.h (_Hash_node_value_base<>): Remove _Hash_node_base inheritance. (_Hash_node_code_cache): New. (_Hash_node_value): New. (_Hash_node<>): Inherits _Hash_node_base<> and _Hash_node_value<>. (_Map_base<>::__node_type): Remove. (_Map_base<>::iterator): Remove. (_Insert_base<>::__hash_cached): New. (_Insert_base<>::__constant_iterators): New. (_Insert_base<>::__hashtable_alloc): New. (_Insert_base<>::__node_type): Remove. (_Insert_base<>::__node_ptr): New. (_Hash_code_base<>): Remove specializations. (_Hash_code_base<>::__node_type): Remove. (_Hash_code_base<>::_M_bucket_index(const __node_type*, size_t)): Replace by... (_Hash_code_base<>::_M_bucket_index(const _Hash_node_value<>&, size_t)): ...this. (_Hash_code_base<>::_M_store_code(__node_type*, __hash_code)): Replace by... (_Hash_code_base<>::_M_store_code(_Hash_node_code_cache<>&, __hash_code)): ...this. (_Hash_code_base<>::_M_copy_code(__node_type*, const __node_type*)): Replace by... (_Hash_code_base<>::_M_copy_code(_Hash_node_code_cache<>&, const _Hash_node_code_base<>&)): ...this. (_Hashtable_base<>::__constant_iterators): Remove. (_Hashtable_base<>::__unique_keys): Remove. (_Hashtable_base<>::__node_type): Remove. (_Hashtable_base<>::iterator): Remove. (_Hashtable_base<>::const_iterator): Remove. (_Hashtable_base<>::local_iterator): Remove. (_Hashtable_base<>::const_local_iterator): Remove. (_Hashtable_base<>::__ireturn_type): Remove. (_Hashtable_base<>::_Equal_hash_code<>::_S_equals): Replace by... (_Hashtable_base<>::_S_equals(__hash_code, const _Hash_node_code_hash<>&)): ...this. (_Hashtable_base<>::_Equal_hash_code<>::_S_node_equals): Replace by... (_Hashtable_base<>::_S_node_equals(__hash_code, const _Hash_node_code_hash<>&)): ...this. (_Hashtable_base<>::_Equal_hash_code<>): Remove. (_Hashtable_base<>::_M_equals): Adapt. (_Hashtable_baxe<>::_M_node_equals): Adapt. (_Equality<>::_M_equal): Adapt. (_Hashtable_alloc<>::__node_ptr): New. (_Hashtable_alloc<>::__bucket_type): Rename into... (_Hashtable_alloc<>::__node_base_ptr): ...this. (_Hashtable_alloc<>::__bucket_alloc_type): Rename into... (_Hashtable_alloc<>::__buckets_alloc_type): ...this. (_Hashtable_alloc<>::__bucket_alloc_traits): Rename into... (_Hashtable_alloc<>::__buckets_alloc_traits): ...this. (_Hashtable_alloc<>::__buckets_ptr): New. (_Hashtable_alloc<>::_M_allocate_node): Adapt. (_Hashtable_alloc<>::_M_deallocate_node): Adapt. (_Hashtable_alloc<>::_M_deallocate_node_ptr): Adapt. (_Hashtable_alloc<>::_M_deallocate_nodes): Adapt. (_Hashtable_alloc<>::_M_allocate_buckets): Adapt. (_Hashtable_alloc<>::_M_deallocate_buckets): Adapt. * include/bits/hashtable.h (_Hashtable<>): Adapt. 2020-10-20 Aldy Hernandez * testsuite/21_strings/basic_string/capacity/1.cc: Pass -Wno-stringop-overflow to test. 2020-10-20 Jonathan Wakely PR libstdc++/95917 * include/std/coroutine (__noop_coro_frame): Replace with noop_coroutine_handle::__frame. (__dummy_resume_destroy): Define inline in __frame. (__noop_coro_fr): Replace with noop_coroutine_handle::_S_fr and define as inline. * testsuite/18_support/coroutines/95917.cc: New test. 2020-10-20 Jonathan Wakely * include/std/coroutine (coroutine_handle<_Promise>): Remove base class. Add constructors, conversions, accessors etc. as proposed for LWG 3460. (coroutine_handle): Likewise. * testsuite/18_support/coroutines/lwg3460.cc: New test. 2020-10-19 Jonathan Wakely * include/bits/unique_ptr.h (make_unique_for_overwrite): Define for C++20. * testsuite/20_util/unique_ptr/creation/array_neg.cc: Remove unused header. Adjust standard reference. * testsuite/20_util/unique_ptr/creation/for_overwrite.cc: New test. * testsuite/20_util/unique_ptr/creation/for_overwrite__neg.cc: New test. 2020-10-19 Jonathan Wakely * include/std/tuple (_Head_base): Use reserved form of __no_unique_address__ attribute because no_unique_address is not reserved prior to C++20. 2020-10-19 Jonathan Wakely * include/bits/node_handle.h (_Node_handle_common): Replace std::optional with custom type. * testsuite/20_util/variant/exception_safety.cc: Add missing header include. 2020-10-19 Jonathan Wakely * include/precompiled/expc++.h: Removed. 2020-10-17 Ville Voutilainen PR libstdc++/97449 * include/std/variant (__gen_vtable_impl<>::_S_apply_single_alt): Diagnose visitor return type mismatches here.. (__gen_vtable_impl::_S_apply): ..not here. 2020-10-15 Jonathan Wakely * include/std/concepts: Fix typos in copyright notice. * include/std/ranges: Likewise. 2020-10-14 Jonathan Wakely PR libstdc++/97415 * include/std/sstream (basic_stringbuf::str()): Check for null egptr() before comparing to non-null pptr(). 2020-10-14 Jonathan Wakely * testsuite/21_strings/basic_string/modifiers/assign/char/move_assign_optim.cc: Do not generate debug info. * testsuite/21_strings/basic_string/modifiers/assign/wchar_t/move_assign_optim.cc: Likewise. 2020-10-14 Jonathan Wakely * include/bits/basic_string.h (basic_string(const Alloc&)) (basic_string(const basic_string&) (basic_string(const CharT*, size_type, const Alloc&)) (basic_string(const CharT*, const Alloc&)) (basic_string(size_type, CharT, const Alloc&)) (basic_string(initializer_list, const Alloc&)) (basic_string(InputIterator, InputIterator, const Alloc&)): Define inline in class body. * include/bits/basic_string.tcc (basic_string(const Alloc&)) (basic_string(const basic_string&) (basic_string(const CharT*, size_type, const Alloc&)) (basic_string(const CharT*, const Alloc&)) (basic_string(size_type, CharT, const Alloc&)) (basic_string(initializer_list, const Alloc&)) (basic_string(InputIterator, InputIterator, const Alloc&)): Move definitions into class body. 2020-10-14 Jonathan Wakely * testsuite/lib/libstdc++.exp (check_effective_target_cxx11-abi): Add comments about which test flags get used by the check. 2020-10-14 Jonathan Wakely * testsuite/21_strings/basic_string/allocator/char/copy.cc: Make comment more precise about what isn't supported by COW strings. * testsuite/21_strings/basic_string/allocator/char/copy_assign.cc: Likewise. * testsuite/21_strings/basic_string/allocator/char/move.cc: Likewise. * testsuite/21_strings/basic_string/allocator/char/move_assign.cc: Likewise. * testsuite/21_strings/basic_string/allocator/char/noexcept.cc: Likewise. * testsuite/21_strings/basic_string/allocator/char/operator_plus.cc: Likewise. * testsuite/21_strings/basic_string/allocator/char/swap.cc: Likewise. * testsuite/21_strings/basic_string/allocator/wchar_t/copy.cc: Likewise. * testsuite/21_strings/basic_string/allocator/wchar_t/copy_assign.cc: Likewise. * testsuite/21_strings/basic_string/allocator/wchar_t/move.cc: Likewise. * testsuite/21_strings/basic_string/allocator/wchar_t/move_assign.cc: Likewise. * testsuite/21_strings/basic_string/allocator/wchar_t/noexcept.cc: Likewise. * testsuite/21_strings/basic_string/allocator/wchar_t/operator_plus.cc: Likewise. * testsuite/21_strings/basic_string/allocator/wchar_t/swap.cc: Likewise. 2020-10-14 Jonathan Wakely * testsuite/21_strings/basic_string/allocator/char/minimal.cc: Do not require cxx11-abi effective target. * testsuite/21_strings/basic_string/allocator/wchar_t/minimal.cc: Likewise. * testsuite/27_io/basic_fstream/cons/base.cc: Likewise. 2020-10-14 Jonathan Wakely * include/bits/basic_string.h [!_GLIBCXX_USE_CXX11_ABI] (basic_string(const _CharT*, const _Alloc&)): Constrain to require an allocator-like type to fix CTAD ambiguity (LWG 3706). * testsuite/21_strings/basic_string/cons/char/deduction.cc: Remove dg-skip-if. * testsuite/21_strings/basic_string/cons/wchar_t/deduction.cc: Likewise. 2020-10-13 Nuno Lopes * include/bits/stl_algo.h (any_of): Fix incorrect description in comment. 2020-10-13 Jonathan Wakely * doc/xml/manual/evolution.xml: Document some API changes and deprecations. * doc/xml/manual/intro.xml: Document LWG 2499. * doc/xml/manual/status_cxx2020.xml: Update status. * doc/html/*: Regenerate. 2020-10-13 Jonathan Wakely * doc/xml/book.txml: Remove trailing whitespace. * doc/xml/chapter.txml: Likewise. * doc/xml/class.txml: Likewise. * doc/xml/gnu/fdl-1.3.xml: Likewise. * doc/xml/gnu/gpl-3.0.xml: Likewise. * doc/xml/manual/abi.xml: Likewise. * doc/xml/manual/algorithms.xml: Likewise. * doc/xml/manual/allocator.xml: Likewise. * doc/xml/manual/appendix_contributing.xml: Likewise. * doc/xml/manual/appendix_free.xml: Likewise. * doc/xml/manual/appendix_porting.xml: Likewise. * doc/xml/manual/atomics.xml: Likewise. * doc/xml/manual/auto_ptr.xml: Likewise. * doc/xml/manual/backwards_compatibility.xml: Likewise. * doc/xml/manual/bitmap_allocator.xml: Likewise. * doc/xml/manual/build_hacking.xml: Likewise. * doc/xml/manual/codecvt.xml: Likewise. * doc/xml/manual/concurrency.xml: Likewise. * doc/xml/manual/concurrency_extensions.xml: Likewise. * doc/xml/manual/configure.xml: Likewise. * doc/xml/manual/containers.xml: Likewise. * doc/xml/manual/ctype.xml: Likewise. * doc/xml/manual/debug.xml: Likewise. * doc/xml/manual/debug_mode.xml: Likewise. * doc/xml/manual/diagnostics.xml: Likewise. * doc/xml/manual/documentation_hacking.xml: Likewise. * doc/xml/manual/evolution.xml: Likewise. * doc/xml/manual/internals.xml: Likewise. * doc/xml/manual/intro.xml: Likewise. * doc/xml/manual/io.xml: Likewise. * doc/xml/manual/iterators.xml: Likewise. * doc/xml/manual/locale.xml: Likewise. * doc/xml/manual/localization.xml: Likewise. * doc/xml/manual/messages.xml: Likewise. * doc/xml/manual/mt_allocator.xml: Likewise. * doc/xml/manual/numerics.xml: Likewise. * doc/xml/manual/parallel_mode.xml: Likewise. * doc/xml/manual/policy_data_structures.xml: Likewise. * doc/xml/manual/prerequisites.xml: Likewise. * doc/xml/manual/shared_ptr.xml: Likewise. * doc/xml/manual/spine.xml: Likewise. * doc/xml/manual/status_cxxtr1.xml: Likewise. * doc/xml/manual/status_cxxtr24733.xml: Likewise. * doc/xml/manual/strings.xml: Likewise. * doc/xml/manual/support.xml: Likewise. * doc/xml/manual/test.xml: Likewise. * doc/xml/manual/test_policy_data_structures.xml: Likewise. * doc/xml/manual/using.xml: Likewise. * doc/xml/manual/using_exceptions.xml: Likewise. * doc/xml/manual/utilities.xml: Likewise. * doc/html/*: Regenerate. 2020-10-12 Patrick Palka * include/std/ranges (take_while_view::begin): Constrain the const overload further as per LWG 3450. (take_while_view::end): Likewise. * testsuite/std/ranges/adaptors/take_while.cc: Add test for LWG 3450. 2020-10-12 Patrick Palka PR libstdc++/95322 * include/std/ranges (take_view::_CI): Define this alias template as per LWG 3449 and remove ... (take_view::_Sentinel::_CI): ... this type alias. (take_view::_Sentinel::operator==): Adjust use of _CI accordingly. Define a second overload that accepts an iterator of the opposite constness as per LWG 3449. (take_while_view::_Sentinel::operator==): Likewise. * testsuite/std/ranges/adaptors/95322.cc: Add tests for LWG 3449. 2020-10-12 Jonathan Wakely * doc/doxygen/user.cfg.in: Update to Doxygen 1.8.20 format. 2020-10-12 Jonathan Wakely * doc/doxygen/user.cfg.in (PREDEFINED): Use __cplusplus=201703L so that C++17 features are documented. 2020-10-12 Jonathan Wakely * include/bits/stl_algobase.h (copy, move, copy_backward) (move_backward): Fix documentation for returned iterator. 2020-10-12 Martin Sebor PR c++/97201 * libsupc++/new (operator new): Add attribute alloc_size and malloc. 2020-10-11 Clement Chigot * config/os/aix/t-aix: Add complementary mode object file to libstdc++fs.a 2020-10-10 Jonathan Wakely PR libstdc++/97362 * doc/html/manual/source_code_style.html: Regenerate. * doc/xml/manual/appendix_contributing.xml: Add __deref to BADNAMES. * include/debug/functions.h (_Irreflexive_checker::__deref): Rename to __ref. * testsuite/17_intro/badnames.cc: Check __deref. 2020-10-10 Ville Voutilainen * include/std/variant (__check_visitor_result): Use size_t for indexes. (__check_visitor_results): Likewise. 2020-10-09 Ville Voutilainen PR libstdc++/95904 * include/std/variant (__deduce_visit_result): Add a nested ::type. (__gen_vtable_impl::_S_apply): Check the visitor return type. (__same_types): New. (__check_visitor_result): Likewise. (__check_visitor_results): Likewise. (visit(_Visitor&&, _Variants&&...)): Use __check_visitor_results in case we're visiting just one variant. * testsuite/20_util/variant/visit_neg.cc: Adjust. 2020-10-09 Jonathan Wakely PR libstdc++/97311 * include/bits/random.tcc (seed_seq::generate): Use uint32_t for calculations. Also split the first loop into three loops to avoid branching on k on every iteration, resolving PR 94823. * testsuite/26_numerics/random/seed_seq/97311.cc: New test. * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-erro line number. 2020-10-09 Daniel Lemire * include/bits/uniform_int_dist.h (uniform_int_distribution::_S_nd): New member function implementing Lemire's "nearly divisionless" algorithm. (uniform_int_distribution::operator()): Use _S_nd when the range of the URBG is the full width of the result type. 2020-10-09 Jonathan Wakely * testsuite/Makefile.am: Set and export variable separately. * testsuite/Makefile.in: Regenerate. 2020-10-09 Jonathan Wakely * scripts/check_performance: Use gnu++11 instead of gnu++0x. * testsuite/Makefile.am (check-performance): Export CXXFLAGS to child process. * testsuite/Makefile.in: Regenerate. 2020-10-09 Jonathan Wakely * testsuite/performance/26_numerics/random_dist.cc: New test. 2020-10-09 Jonathan Wakely * testsuite/util/testsuite_performance.h (report_header): Remove unused variable. 2020-10-08 Patrick Palka PR libstdc++/95788 * include/bits/ranges_uninitialized.h: (__construct_at_fn::operator()): Rewrite in terms of std::construct_at. Declare it conditionally noexcept. Qualify calls to declval in its requires-clause. * testsuite/20_util/specialized_algorithms/construct_at/95788.cc: New test. 2020-10-08 Jonathan Wakely PR libstdc++/82584 * include/bits/random.tcc (discrete_distribution::param_type::_M_initialize) (piecewise_constant_distribution::param_type::_M_initialize) (piecewise_linear_distribution::param_type::_M_initialize): Add assertions for positive sums.. * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error line. 2020-10-08 Jonathan Wakely * include/bits/ios_base.h (ios_base::failure): Add constructors takeing error_code argument. Add code() member function. * testsuite/27_io/ios_base/failure/cxx11.cc: Allow test to run for the old ABI but do not check for derivation from std::system_error. * testsuite/27_io/ios_base/failure/error_code.cc: New test. 2020-10-08 Jonathan Wakely * include/bits/random.h (__detail::_Mod): Revert last change. (__detail::__mod): Do not use _Mod for a==0 case. * testsuite/26_numerics/random/linear_congruential_engine/operators/call.cc: Check other cases with a==0. Also check runtime results. * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error line. 2020-10-07 Jonathan Wakely * include/bits/random.h (__detail::_Mod): Avoid divide by zero. * testsuite/26_numerics/random/linear_congruential_engine/operators/call.cc: New test. 2020-10-07 Jonathan Wakely * include/bits/random.h (seed_seq(initializer_list)): Rename parameter to use reserved name. * include/bits/ranges_algo.h (shift_left, shift_right): Rename template parameters to use reserved name. * libsupc++/exception_ptr.h (exception_ptr): Likewise for parameters and local variables. * testsuite/17_intro/names.cc: Check "il". Do not check "d" and "y" in C++20 mode. 2020-10-06 Jonathan Wakely PR libstdc++/90295 * config/abi/pre/gnu.ver (CXXABI_1.3.13): New symbol version. (exception_ptr::_M_addref(), exception_ptr::_M_release()): Export symbols. * libsupc++/eh_ptr.cc (exception_ptr::exception_ptr()): Remove out-of-line definition. (exception_ptr::exception_ptr(const exception_ptr&)): Likewise. (exception_ptr::~exception_ptr()): Likewise. (exception_ptr::operator=(const exception_ptr&)): Likewise. (exception_ptr::swap(exception_ptr&)): Likewise. (exception_ptr::_M_addref()): Add branch prediction. * libsupc++/exception_ptr.h (exception_ptr::operator bool): Add noexcept. [!_GLIBCXX_EH_PTR_COMPAT] (operator==, operator!=): Define inline as hidden friends. Remove declarations at namespace scope. (exception_ptr::exception_ptr()): Define inline. (exception_ptr::exception_ptr(const exception_ptr&)): Likewise. (exception_ptr::~exception_ptr()): Likewise. (exception_ptr::operator=(const exception_ptr&)): Likewise. (exception_ptr::swap(exception_ptr&)): Likewise. * testsuite/util/testsuite_abi.cc: Add CXXABI_1.3.13. * testsuite/18_support/exception_ptr/90295.cc: New test. 2020-10-06 Jonathan Wakely * include/std/ranges (join_view): Remove deduction guide. (views::join): Add explicit template argument list to prevent deducing the wrong type. * testsuite/std/ranges/adaptors/join.cc: Move test for LWG 3474 here, from ... * testsuite/std/ranges/adaptors/join_lwg3474.cc: Removed. 2020-10-05 Jonathan Wakely * include/bits/regex.h: Use __int_traits instead of std::numeric_limits. * include/bits/uniform_int_dist.h: Use __int_traits::__max instead of std::numeric_limits::max(). * include/bits/hashtable_policy.h: Use size_t(-1) instead of std::numeric_limits::max(). * include/std/regex: Include . * include/std/string_view: Use typedef for __int_traits. * src/c++11/hashtable_c++0x.cc: Use size_t(-1) instead of std::numeric_limits::max(). * testsuite/std/ranges/iota/96042.cc: Include . * testsuite/std/ranges/iota/difference_type.cc: Likewise. * testsuite/std/ranges/subrange/96042.cc: Likewise. 2020-10-05 Jonathan Wakely * include/std/numeric: Move all #include directives to the top of the header. * testsuite/26_numerics/gcd/gcd_neg.cc: Adjust dg-error line numbers. * testsuite/26_numerics/lcm/lcm_neg.cc: Likewise. 2020-10-05 Jonathan Wakely * config/abi/pre/gnu.ver: Add new symbol. * include/bits/functexcept.h (__throw_bad_array_new_length): Declare new function. * include/ext/malloc_allocator.h (malloc_allocator::allocate): Throw bad_array_new_length for impossible sizes (LWG 3190). * include/ext/new_allocator.h (new_allocator::allocate): Likewise. * include/std/memory_resource (polymorphic_allocator::allocate) (polymorphic_allocator::allocate_object): Use new function, __throw_bad_array_new_length. * src/c++11/functexcept.cc (__throw_bad_array_new_length): Define. * testsuite/20_util/allocator/lwg3190.cc: New test. 2020-10-05 Mike Crowe PR libstdc++/91486 * include/bits/atomic_futex.h: (__atomic_futex_unsigned::_M_load_when_equal_until): Use target clock duration type when rounding. * testsuite/30_threads/async/async.cc (test_pr91486_wait_for): Rename from test_pr91486. (float_steady_clock): New class for test. (test_pr91486_wait_until): New test. 2020-10-05 Mike Crowe * testsuite/20_util/duration_cast/rounding_c++11.cc: Copy rounding.cc and alter to support compilation for C++11 and to test std::chrono::__detail::ceil. 2020-10-02 Jonathan Wakely * testsuite/29_atomics/atomic_float/value_init.cc: Use float instead of double so that __atomic_load_8 isn't needed. 2020-10-02 Jonathan Wakely * testsuite/18_support/96817.cc: Use terminate handler that calls _Exit(0). 2020-10-02 Patrick Palka * include/bits/stl_iterator.h (reverse_iterator::iter_move): Define for C++20 as per P0896. (reverse_iterator::iter_swap): Likewise. (move_iterator::operator*): Apply P0896 changes for C++20. (move_iterator::operator[]): Likewise. * testsuite/24_iterators/reverse_iterator/cust.cc: New test. 2020-10-01 Jonathan Wakely * config/cpu/arm/cxxabi_tweaks.h (_GLIBCXX_GUARD_TEST_AND_ACQUIRE): Do not try to dereference return value of __atomic_load_n. 2020-09-30 Jonathan Wakely * config/cpu/arm/cxxabi_tweaks.h (_GLIBCXX_GUARD_TEST_AND_ACQUIRE): (_GLIBCXX_GUARD_SET_AND_RELEASE): Define for EABI. 2020-09-30 Jonathan Wakely * include/bits/c++config (_GLIBCXX_HAVE_BUILTIN_IS_SAME): Define for GCC 11 or when !__is_identifier(__is_same). (_GLIBCXX_BUILTIN_IS_SAME_AS): Remove. * include/std/type_traits (is_same, is_same_v): Replace uses of _GLIBCXX_BUILTIN_IS_SAME_AS. 2020-09-28 Patrick Palka * include/std/ranges (filter_view): Declare the data member _M_base last instead of first, and adjust constructors' member initializer lists accordingly. (transform_view): Likewise. (take_view): Likewise. (take_while_view): Likewise. (drop_view): Likewise. (drop_while_view): Likewise. (join_view): Likewise. (split_view): Likewise (and tweak nearby formatting). (reverse_view): Likewise. * testsuite/std/ranges/adaptors/sizeof.cc: Update expected sizes. 2020-09-28 Patrick Palka * testsuite/std/ranges/adaptors/sizeof.cc: New test. 2020-09-28 Patrick Palka * include/bits/ranges_util.h (subrange::_M_end): Give it [[no_unique_address]]. * testsuite/std/ranges/subrange/sizeof.cc: New test. 2020-09-28 Patrick Palka * include/std/ranges (iota_view::_M_bound): Give it [[no_unique_address]]. * testsuite/std/ranges/iota/iota_view.cc: Check that an unbounded iota_view has minimal size. 2020-09-27 Clement Chigot * config/os/aix/t-aix: Use $(AR) without -X32_64. 2020-09-26 Jonathan Wakely PR libstdc++/96817 * include/ext/atomicity.h (__gnu_cxx::__is_single_threaded()): New function wrapping __libc_single_threaded if available. (__exchange_and_add_dispatch, __atomic_add_dispatch): Use it. * libsupc++/guard.cc (__cxa_guard_acquire, __cxa_guard_abort) (__cxa_guard_release): Likewise. * testsuite/18_support/96817.cc: New test. 2020-09-25 Jonathan Wakely * libsupc++/Makefile.am: Remove redundant -std=gnu++1z flags. * libsupc++/Makefile.in: Regenerate. 2020-09-24 Antony Polukhin PR libstdc++/71579 * include/std/type_traits (invoke_result, is_invocable) (is_invocable_r, is_nothrow_invocable, is_nothrow_invocable_r): Add static_asserts to make sure that the arguments of the type traits are not misused with incomplete types. * testsuite/20_util/invoke_result/incomplete_args_neg.cc: New test. * testsuite/20_util/is_invocable/incomplete_args_neg.cc: New test. * testsuite/20_util/is_invocable/incomplete_neg.cc: New test. * testsuite/20_util/is_nothrow_invocable/incomplete_args_neg.cc: New test. * testsuite/20_util/is_nothrow_invocable/incomplete_neg.cc: Check for error on incomplete type usage in trait. 2020-09-24 Patrick Palka * include/std/ranges (__detail::__boxable): Split out the associated constraints of __box into here. (__detail::__box): Use the __boxable concept. Define a leaner partial specialization for semiregular types. (single_view::_M_value): Give it [[no_unique_address]]. (filter_view::_M_pred): Likewise. (transform_view::_M_fun): Likewise. (take_while_view::_M_pred): Likewise. (drop_while_view::_M_pred):: Likewise. * testsuite/std/ranges/adaptors/detail/semiregular_box.cc: New test. 2020-09-24 Jonathan Wakely * doc/xml/manual/configure.xml: Correct name of option. * doc/html/*: Regenerate. 2020-09-22 Jonathan Wakely PR libstdc++/97167 * src/c++17/fs_path.cc (path::_Parser::root_path()): Check for empty string before inspecting the first character. * testsuite/27_io/filesystem/path/append/source.cc: Append empty string_view to path. 2020-09-22 Glen Joseph Fernandes * include/bits/align.h (align): Fix overflow handling. * testsuite/20_util/align/3.cc: New test. 2020-09-22 Jonathan Wakely * include/Makefile.am: Add new headers and adjust for renamed header. * include/Makefile.in: Regenerate. * include/bits/iterator_concepts.h: Adjust for renamed header. * include/bits/range_access.h (ranges::*): Move to new header. * include/bits/ranges_algobase.h: Include new header instead of . * include/bits/ranges_algo.h: Include new header. * include/bits/range_cmp.h: Moved to... * include/bits/ranges_cmp.h: ...here. * include/bits/ranges_base.h: New header. * include/bits/ranges_util.h: New header. * include/experimental/string_view: Include new header. * include/std/functional: Adjust for renamed header. * include/std/ranges (ranges::view_base, ranges::enable_view) (ranges::dangling, ranges::borrowed_iterator_t): Move to new header. (ranges::view_interface, ranges::subrange) (ranges::borrowed_subrange_t): Move to new header. * include/std/span: Include new header. * include/std/string_view: Likewise. * testsuite/24_iterators/back_insert_iterator/pr93884.cc: Add missing header. * testsuite/24_iterators/front_insert_iterator/pr93884.cc: Likewise. 2020-09-22 Jonathan Wakely PR libstdc++/96803 * include/std/tuple (_Tuple_impl(allocator_arg_t, Alloc, const _Tuple_impl&)): Use correct value category in __use_alloc call. * testsuite/20_util/tuple/cons/96803.cc: Check with constructors that require correct value category to be used. 2020-09-22 Patrick Palka * include/std/span (span::front): Remove static_assert. (span::back): Likewise. (span::operator[]): Likewise. * testsuite/23_containers/span/back_neg.cc: Rewrite to verify that we check the preconditions of back() only when it's called. * testsuite/23_containers/span/front_neg.cc: Likewise for front(). * testsuite/23_containers/span/index_op_neg.cc: Likewise for operator[]. 2020-09-22 Patrick Palka * include/bits/stl_algo.h (__sample): Exit early when the input range is empty. * testsuite/25_algorithms/sample/3.cc: New test. 2020-09-22 Patrick Palka * include/bits/stl_algo.h (for_each_n): Mark constexpr for C++20. (search): Likewise for the overload that takes a searcher. * testsuite/25_algorithms/for_each/constexpr.cc: Test constexpr std::for_each_n. * testsuite/25_algorithms/search/constexpr.cc: Test constexpr std::search overload that takes a searcher. 2020-09-21 Jonathan Wakely * include/bits/c++config (__replacement_assert): Add noreturn attribute. (__glibcxx_assert_impl): Use __builtin_expect to hint that the assertion is expected to pass. 2020-09-21 Jonathan Wakely * include/std/ranges (drop_view::begin()): Adjust constraints to match the correct condition for O(1) ranges::next (LWG 3482). * testsuite/std/ranges/adaptors/drop.cc: Check that iterator is cached for non-sized_range. 2020-09-21 Jonathan Wakely * include/std/ranges (transform_view, elements_view): Relax constraints on operator- for iterators, as per LWG 3483. * testsuite/std/ranges/adaptors/elements.cc: Check that we can take the difference of two iterators from a non-random access range. * testsuite/std/ranges/adaptors/transform.cc: Likewise. 2020-09-21 Jonathan Wakely PR libstdc++/97132 * include/bits/align.h (align) [!_GLIBCXX_USE_C99_STDINT_TR1]: Remove unused code. (assume_aligned): Do not use __builtin_assume_aligned during constant evaluation. * testsuite/20_util/assume_aligned/1.cc: Improve test. * testsuite/20_util/assume_aligned/97132.cc: New test. 2020-09-20 Jonathan Wakely PR libstdc++/97101 * include/std/functional (bind_front): Fix order of parameters in is_nothrow_constructible_v specialization. * testsuite/20_util/function_objects/bind_front/97101.cc: New test. 2020-09-11 Thomas Rodgers * include/std/memory: Move #include inside C++11 conditional includes. 2020-09-11 Thomas Rodgers * include/Makefile.am (bits_headers): Add new header. * include/Makefile.in: Regenerate. * include/bits/align.h: New file. * include/std/memory (align): Move definition to bits/align.h. (assume_aligned): Likewise. 2020-09-11 Jonathan Wakely * include/std/chrono [C++17] (chrono::__detail::ceil): Add using declaration to make chrono::ceil available for internal use with a consistent name. (chrono::__detail::__ceil_impl): New function template. (chrono::__detail::ceil): Use __ceil_impl to compare and increment the value. Remove SFINAE constraint. 2020-09-11 Jonathan Wakely * include/bits/regex_error.h (__throw_regex_error): Fix parameter declaration and use reserved attribute names. 2020-09-11 Mike Crowe * include/std/condition_variable (condition_variable::wait_until): Convert delta to steady_clock duration before adding to current steady_clock time to avoid rounding errors described in PR68519. (condition_variable::wait_for): Simplify calculation of absolute time by using chrono::__detail::ceil in both overloads. * testsuite/30_threads/condition_variable/members/68519.cc: (test_wait_for): Renamed from test01. Replace unassigned val variable with constant false. Reduce scope of mx and cv variables to just test_wait_for function. (test_wait_until): Add new test case. 2020-09-11 Mike Crowe PR libstdc++/91486 * include/bits/atomic_futex.h (__atomic_futex_unsigned::_M_load_when_equal_for) (__atomic_futex_unsigned::_M_load_when_equal_until): Use __detail::ceil to convert delta to the reference clock duration type to avoid resolution problems. * include/std/chrono (__detail::ceil): Move implementation of std::chrono::ceil into private namespace so that it's available to pre-C++17 code. * testsuite/30_threads/async/async.cc (test_pr91486): Test __atomic_futex_unsigned::_M_load_when_equal_for. 2020-09-11 Mike Crowe * include/bits/atomic_futex.h (__atomic_futex_unsigned::_M_load_when_equal_until): Add loop on generic _Clock to check the timeout against _Clock again after _M_load_when_equal_until returns indicating a timeout. * testsuite/30_threads/async/async.cc: Invent slow_clock that runs at an eleventh of steady_clock's speed. Use it to test the user-supplied-clock variant of __atomic_futex_unsigned::_M_load_when_equal_until works generally with test03 and loops correctly when the timeout time hasn't been reached in test04. 2020-09-11 Mike Crowe PR libstdc++/93542 * include/bits/atomic_futex.h (__atomic_futex_unsigned): Change __clock_t typedef to use steady_clock so that unknown clocks are synced to it rather than system_clock. Change existing __clock_t overloads of _M_load_and_text_until_impl and _M_load_when_equal_until to use system_clock explicitly. Remove comment about DR 887 since these changes address that problem as best as we currently able. 2020-09-11 Mike Crowe PR libstdc++/93542 * config/abi/pre/gnu.ver: Update for addition of __atomic_futex_unsigned_base::_M_futex_wait_until_steady. * include/bits/atomic_futex.h (__atomic_futex_unsigned_base): Add comments to clarify that _M_futex_wait_until and _M_load_and_test_until use CLOCK_REALTIME. (__atomic_futex_unsigned_base::_M_futex_wait_until_steady) (__atomic_futex_unsigned_base::_M_load_and_text_until_steady): New member functions that use CLOCK_MONOTONIC. (__atomic_futex_unsigned_base::_M_load_and_test_until_impl) (__atomic_futex_unsigned_base::_M_load_when_equal_until): Add overloads that accept a steady_clock time_point and use the new member functions. * src/c++11/futex.cc: Include headers required for clock_gettime. (futex_clock_monotonic_flag): New constant to tell futex to use CLOCK_MONOTONIC to match existing futex_clock_realtime_flag. (futex_clock_monotonic_unavailable): New global to store the result of trying to use CLOCK_MONOTONIC. (__atomic_futex_unsigned_base::_M_futex_wait_until_steady): Add new variant of _M_futex_wait_until that uses CLOCK_MONOTONIC to support waiting using steady_clock. 2020-09-11 Mike Crowe * src/c++11/futex.cc: Add new constants for required futex flags. Add futex_clock_realtime_unavailable flag to store result of trying to use FUTEX_CLOCK_REALTIME. (__atomic_futex_unsigned_base::_M_futex_wait_until): Try to use FUTEX_WAIT_BITSET with FUTEX_CLOCK_REALTIME and only fall back to using gettimeofday and FUTEX_WAIT if that's not supported. 2020-09-11 Mike Crowe * testsuite/30_threads/async/async.cc (test02): Test steady_clock with std::future::wait_until. (test03): Add new test templated on clock type waiting for future associated with async to resolve. (main): Call test03 to test both system_clock and steady_clock. 2020-09-11 Torbjörn SVENSSON Christophe Lyon * libsupc++/eh_call.cc: Avoid warning with -fno-exceptions. 2020-09-11 Torbjörn SVENSSON Christophe Lyon * libsupc++/eh_call.cc: Avoid warning with -fno-exceptions. 2020-09-11 Christophe Lyon * include/bits/regex_error.h: Avoid warning with -fno-exceptions. 2020-09-10 Jonathan Wakely * include/bits/locale_conv.h (__do_str_codecvt, __str_codecvt_in_all): Add casts to compare types of the same signedness. 2020-09-10 Jonathan Wakely * include/bits/ranges_algobase.h (__equal_fn): Remove unused typedef. 2020-09-10 Jonathan Wakely * include/std/version (__cpp_lib_array_constexpr): (__cpp_lib_constexpr_char_traits): Only define C++17 value when compiling C++17. 2020-09-10 Jonathan Wakely * include/experimental/bits/shared_ptr.h (shared_ptr(auto_ptr&&)) (operator=(auto_ptr&&)): Add diagnostic pragmas to suppress warnings for uses of std::auto_ptr. * include/experimental/type_traits (is_literal_type_v): Likewise, for use of std::is_literal_type. * include/std/condition_variable (condition_variable_any::_Unlock): Likewise, for use of std::uncaught_exception. 2020-09-10 Jonathan Wakely * include/bits/fs_path.h (path::_List::type()): Avoid narrowing conversion. * include/std/chrono (operator+(const year&, const years&)): Likewise. 2020-09-10 Jonathan Wakely * include/bits/codecvt.h (codecvt_byname): Remove names of unused parameters. 2020-09-10 Jonathan Wakely * include/bits/locale_facets_nonio.tcc: Adjust whitespace. 2020-09-10 Krystian Kuźniarek * include/c_global/cmath (__lerp): Avoid -Wparentheses warnings. 2020-09-10 Krystian Kuźniarek * include/bits/atomic_base.h: Fix -Wunused-variable warnings. * include/ext/new_allocator.h: Fix -Wunused-parameter warnings. 2020-09-10 Jonathan Wakely * include/bits/stl_iterator.h (counted_iterator): Add assertions to check preconditions added by LWG 3472. 2020-09-10 Jonathan Wakely PR libstdc++/94160 * src/c++17/memory_resource.cc (munge_options): Round max_blocks_per_chunk to a multiple of four. (__pool_resource::_M_alloc_pools()): Simplify slightly. * testsuite/20_util/unsynchronized_pool_resource/allocate.cc: Check that valid pointers are returned when small values are used for max_blocks_per_chunk. 2020-09-10 Jonathan Wakely PR libstdc++/96942 * include/std/memory_resource (monotonic_buffer_resource::do_allocate): Use __builtin_expect when checking if a new buffer needs to be allocated from the upstream resource, and for checks for edge cases like zero sized buffers and allocations. * src/c++17/memory_resource.cc (aligned_size): New class template. (aligned_ceil): New helper function to round up to a given alignment. (monotonic_buffer_resource::chunk): Replace _M_size and _M_align with an aligned_size member. Remove _M_canary member. Change _M_next to pointer instead of unaligned buffer. (monotonic_buffer_resource::chunk::allocate): Round up to multiple of 64 instead of to power of two. Check for size overflow. Remove redundant check for minimum required alignment. (monotonic_buffer_resource::chunk::release): Adjust for changes to data members. (monotonic_buffer_resource::_M_new_buffer): Use aligned_ceil. (big_block): Replace _M_size and _M_align with aligned_size member. (big_block::big_block): Check for size overflow. (big_block::size, big_block::align): Adjust to use aligned_size. (big_block::alloc_size): Use aligned_ceil. (munge_options): Use aligned_ceil. (__pool_resource::allocate): Use big_block::align for alignment. * testsuite/20_util/monotonic_buffer_resource/allocate.cc: Check upstream resource gets expected values for impossible sizes. * testsuite/20_util/unsynchronized_pool_resource/allocate.cc: Likewise. Adjust checks for expected alignment in existing test. 2020-09-07 Jonathan Wakely * include/std/chrono (duration::_S_gcd): Use invariant that neither value is zero initially. 2020-09-07 Jonathan Wakely * include/std/ranges (__box): Simplify constraints as per LWG 3477. 2020-09-03 Jonathan Wakely PR libstdc++/96592 * include/std/tuple (_TupleConstraints): Use alternative is_constructible instead of std::is_constructible. * testsuite/20_util/tuple/cons/96592.cc: New test. 2020-09-03 Jonathan Wakely * include/std/chrono (duration::_S_gcd): Use iterative algorithm for C++14 and later. * include/std/numeric (__detail::__gcd): Replace recursive Euclidean algorithm with iterative version of binary GCD algorithm. * testsuite/26_numerics/gcd/1.cc: Test additional inputs. * testsuite/26_numerics/gcd/gcd_neg.cc: Adjust dg-error lines. * testsuite/26_numerics/lcm/lcm_neg.cc: Likewise. * testsuite/experimental/numeric/gcd.cc: Test additional inputs. * testsuite/26_numerics/gcd/2.cc: New test. 2020-09-02 Jonathan Wakely PR libstdc++/92978 * testsuite/experimental/numeric/92978.cc: Use experimental::lcm not std::lcm. 2020-09-02 Jonathan Wakely PR libstdc++/96851 * include/bits/cpp_type_traits.h (__is_memcmp_ordered): New trait that says if memcmp can be used for ordering. (__is_memcmp_ordered_with): Likewise, for two types. * include/bits/deque.tcc (__lex_cmp_dit): Use new traits instead of __is_byte and __numeric_traits. (__lexicographical_compare_aux1): Likewise. * include/bits/ranges_algo.h (__lexicographical_compare_fn): Likewise. * include/bits/stl_algobase.h (__lexicographical_compare_aux1) (__is_byte_iter): Likewise. * include/std/array (operator<=>): Likewise. Only use memcmp when std::is_constant_evaluated() is false. * testsuite/23_containers/array/comparison_operators/96851.cc: New test. * testsuite/23_containers/array/tuple_interface/get_neg.cc: Adjust dg-error line numbers. 2020-09-02 Jonathan Wakely * include/bits/stl_iterator.h: Include for definitions of __try, __catch and __throw_exception_again. (counted_iterator::operator++(int)): Use __throw_exception_again instead of throw. * libsupc++/new: Include not . * libsupc++/new_opvnt.cc: Include . * testsuite/18_support/destroying_delete.cc: Include for std::is_same_v definition. * testsuite/20_util/variant/index_type.cc: Qualify size_t. 2020-09-01 Jonathan Wakely PR libstdc++/71960 * include/bits/c++config (__glibcxx_assert_impl): Remove do-while so that uses of the macro need to add it. (__glibcxx_assert): Rename macro for runtime assertions to __glibcxx_assert_2. (__glibcxx_assert_1): Define macro for constexpr assertions. (__glibcxx_assert): Define macro for constexpr and runtime assertions. * include/bits/range_access.h (ranges::advance): Remove redundant precondition checks during constant evaluation. * include/parallel/base.h (_GLIBCXX_PARALLEL_ASSERT): Always use do-while in macro expansion. * include/std/ranges (iota_view::iota_view(W, B)): Remove redundant braces. 2020-09-01 Jonathan Wakely * include/std/chrono (duration::_S_gcd(intmax_t, intmax_t)): New helper function for finding GCD of two positive intmax_t values. (duration::__divide): New helper alias for dividing one period by another. (duration::__is_harmonic): Use __divide not ratio_divide. (duration(const duration&)): Require the duration rep types to be convertible. * testsuite/20_util/duration/cons/dr2094.cc: New test. * testsuite/20_util/duration/requirements/reduced_period.cc: Fix definition of unused member functions in test type. * testsuite/20_util/duration/requirements/typedefs_neg2.cc: Adjust expected errors. 2020-08-29 Jonathan Wakely * include/std/numeric (__detail::__absu(bool)): Make deleted function a function template, so it will be chosen for calls with an explicit template argument list. * testsuite/26_numerics/gcd/gcd_neg.cc: Add dg-prune-output. * testsuite/26_numerics/lcm/lcm_neg.cc: Likewise. 2020-08-28 Jonathan Wakely * include/std/chrono (common_type): Fix partial specializations for a single duration type to use the common_type of the rep. (duration::operator+, duration::operator-): Fix return types to also use the common_type of the rep. * testsuite/20_util/duration/requirements/reduced_period.cc: Check duration using a rep that has common_type specialized. 2020-08-28 Jonathan Wakely PR libstdc++/92978 * include/std/numeric (__abs_integral): Replace with ... (__detail::__absu): New function template that returns an unsigned type, guaranteeing it can represent the most negative signed value. (__detail::__gcd, __detail::__lcm): Require arguments to be unsigned and therefore already non-negative. (gcd, lcm): Convert arguments to absolute value as unsigned type before calling __detail::__gcd or __detail::__lcm. * include/experimental/numeric (gcd, lcm): Likewise. * testsuite/26_numerics/gcd/gcd_neg.cc: Adjust expected errors. * testsuite/26_numerics/lcm/lcm_neg.cc: Likewise. * testsuite/26_numerics/gcd/92978.cc: New test. * testsuite/26_numerics/lcm/92978.cc: New test. * testsuite/experimental/numeric/92978.cc: New test. 2020-08-27 Jonathan Wakely * include/std/chrono (__duration_common_type): Ensure the reduced ratio is used. Remove unused partial specialization using __failure_type. (common_type): Pass reduced ratios to __duration_common_type. Add partial specializations for simple cases involving a single duration or time_point type. (duration::period): Use reduced ratio. (duration::operator+(), duration::operator-()): Return duration type using the reduced ratio. * testsuite/20_util/duration/requirements/typedefs_neg2.cc: Adjust expected errors. * testsuite/20_util/duration/requirements/reduced_period.cc: New test. 2020-08-27 Patrick Palka * include/std/chrono (year_month::operator+): Properly handle a month value of 0 by casting the month value to int before subtracting 1 from it so that the difference is sign-extended in the subsequent addition. * testsuite/std/time/year_month/1.cc: Test adding months to a year_month whose month component is below or above the normalized range of [1,12]. 2020-08-27 Patrick Palka * include/std/chrono (__detail::__months_years_conversion_disambiguator): Define. (year_month::operator+=): Templatize the 'months'-based overload so that the 'years'-based overload is selected in case of equally-ranked implicit conversion sequences to both 'months' and 'years' from the supplied argument. (year_month::operator-=): Likewise. (year_month::operator+): Likewise. (year_month::operator-): Likewise. (year_month_day::operator+=): Likewise. (year_month_day::operator-=): Likewise. (year_month_day::operator+): Likewise. (year_month_day::operator-): Likewise. (year_month_day_last::operator+=): Likewise. (year_month_day_last::operator-=): Likewise. (year_month_day_last::operator+): Likewise (year_month_day_last::operator-): Likewise. (year_month_day_weekday::operator+=): Likewise (year_month_day_weekday::operator-=): Likewise. (year_month_day_weekday::operator+): Likewise. (year_month_day_weekday::operator-): Likewise. (year_month_day_weekday_last::operator+=): Likewise (year_month_day_weekday_last::operator-=): Likewise. (year_month_day_weekday_last::operator+): Likewise. (year_month_day_weekday_last::operator-): Likewise. (testsuite/std/time/year_month/2.cc): New test. (testsuite/std/time/year_month_day/2.cc): New test. (testsuite/std/time/year_month_day_last/2.cc): New test. (testsuite/std/time/year_month_weekday/2.cc): New test. (testsuite/std/time/year_month_weekday_last/2.cc): New test. * testsuite/std/time/year_month/2.cc: New file. * testsuite/std/time/year_month_day/2.cc: New file. * testsuite/std/time/year_month_day_last/2.cc: New file. * testsuite/std/time/year_month_weekday/2.cc: New file. * testsuite/std/time/year_month_weekday_last/2.cc: New file. 2020-08-27 Patrick Palka PR libstdc++/95322 * include/std/ranges (transform_view::sentinel::__distance_from): Give this a deduced return type. (transform_view::sentinel::operator-): Adjust the return type so that it's based on the constness of the iterator rather than that of the sentinel. * testsuite/std/ranges/adaptors/95322.cc: Refer to LWG 3488. 2020-08-27 Patrick Palka * include/std/ranges (elements_view::begin): Adjust constraints. (elements_view::end): Likewise. (elements_view::_Sentinel::operator==): Templatize to take both _Iterator and _Iterator. (elements_view::_Sentinel::operator-): Likewise. * testsuite/std/ranges/adaptors/elements.cc: Add testcase for the example from P1994R1. * testsuite/std/ranges/adaptors/lwg3406.cc: New test. 2020-08-27 Patrick Palka * include/std/ranges (elements_view::end): Replace these two overloads with four new overloads. (elements_view::_Iterator::operator==): Remove. (elements_view::_Iterator::operator-): Likewise. (elements_view::_Sentinel): Define. 2020-08-26 Jonathan Wakely * include/std/tuple (_Tuple_impl): Whitespaces changes for consistent indentation. Also use __enable_if_t alias template. 2020-08-26 Jonathan Wakely PR libstdc++/96803 * include/std/tuple (_Tuple_impl(allocator_arg_t, Alloc, const _Tuple_impl&)): Replace parameter pack with a type parameter and a pack and pass the first type to __use_alloc. * testsuite/20_util/tuple/cons/96803.cc: New test. 2020-08-26 Patrick Palka * include/std/chrono (year_month_weekday::operator==): Compare weekday_indexed instead of weekday. * testsuite/std/time/year_month_weekday/1.cc: Augment testcase. 2020-08-26 Jonathan Wakely * include/bits/hashtable_policy.h (_Hash_code_base): Change index of _Hashtable_ebo_helper base class. * testsuite/23_containers/unordered_map/dup_types.cc: New test. 2020-08-26 Jonathan Wakely PR libstdc++/71960 * include/experimental/string_view (basic_string_view): Enable debug assertions. * include/std/string_view (basic_string_view): Likewise. 2020-08-26 François Dumont * include/bits/hashtable_policy.h (_Hashtable<>): Rename _H1 into _Hash _H2 into _RangeHash and _Hash into _Unused. (_Hastable_base<>): Likewise. (_Map_base<>): Likewise. (_Insert_base<>): Likewise. (_Insert<>): Likewise. (_Rehash_base<>): Likewise. (_Local_iterator_base<>): Likewise. (_Hash_code_base<>): Likewise. (_Hash_code_base<_Key, _Value, _ExtractKey, _H1, _H2, _Hash, false>): Remove. (_Hash_code_base<_Key, _Value, _ExtractKey, _H1, _H2, _Hash, true>): Remove. (_Hash_code_base<_Key, _Value, _ExtractKey, _Hash, _RangeHas, _Unused, bool>): Remove _Hashtable_ebo_helper<2, _RangeHash> base type.. (_Hash_code_base<>::_M_bucket_index(const _Key&, __hash_code, size_t)): Replace by... (_Hash_code_base<>::_M_bucket_index(__hash_code, size_t)): ...this. (_Local_iterator<>): Remove _H1 and _H2 template parameters. (_Local_const_iterator<>): Likewise. (_Equality<>): Likewise. (_Map_base<>::operator[](const key_type&): Adapt. (_Map_base<>::operator[](key_type&&): Adapt. (_Identity::operator()): Add noexcept. (_Select1st::operator()): Likewise. (_Hash_code_base<>): Remove _Hashtable_ebo_helper<0, _ExtractKey> base type. (_Hash_code_base::_M_extract): Remove. * include/bits/hashtable.h (_Hashtable<>): Remove _H1 and _H2 template parameters. Remove _ExtractKey from constructors. (_Hashtable<>::_M_insert_unique_node(const key_type&, size_t, __hash_code, __node_type*, size_t)): Replace by... (_Hashtable<>::_M_insert_unique_node(size_t, __hash_code, __node_type*, size_t)): ...this. (_Hashtable<>::_M_insert_muti_node(__node_type*, const key_type&, __hash_code, __node_type*)): Replace by... (_Hashtable<>::_M_insert_multi_node(__node_type*, __hash_code, __node_type*)): ...this. (_Hashtable<>::__key_extract): Remove. * include/bits/node_handle.h: Adapt. 2020-08-25 Jonathan Wakely * testsuite/21_strings/debug/iterator_self_move_assign_neg.cc: Removed. * testsuite/21_strings/debug/self_move_assign_neg.cc: Removed. * testsuite/23_containers/deque/debug/iterator_self_move_assign_neg.cc: Removed. * testsuite/23_containers/deque/debug/self_move_assign_neg.cc: Removed. * testsuite/23_containers/forward_list/debug/iterator_self_move_assign_neg.cc: Removed. * testsuite/23_containers/forward_list/debug/self_move_assign_neg.cc: Removed. * testsuite/23_containers/list/debug/iterator_self_move_assign_neg.cc: Removed. * testsuite/23_containers/list/debug/self_move_assign_neg.cc: Removed. * testsuite/23_containers/map/debug/iterator_self_move_assign_neg.cc: Removed. * testsuite/23_containers/map/debug/self_move_assign_neg.cc: Removed. * testsuite/23_containers/multimap/debug/iterator_self_move_assign_neg.cc: Removed. * testsuite/23_containers/multimap/debug/self_move_assign_neg.cc: Removed. * testsuite/23_containers/multiset/debug/iterator_self_move_assign_neg.cc: Removed. * testsuite/23_containers/multiset/debug/self_move_assign_neg.cc: Removed. * testsuite/23_containers/set/debug/iterator_self_move_assign_neg.cc: Removed. * testsuite/23_containers/set/debug/self_move_assign_neg.cc: Removed. * testsuite/23_containers/unordered_map/debug/iterator_self_move_assign_neg.cc: Removed. * testsuite/23_containers/unordered_map/debug/self_move_assign_neg.cc: Removed. * testsuite/23_containers/unordered_multimap/debug/iterator_self_move_assign_neg.cc: Removed. * testsuite/23_containers/unordered_multimap/debug/self_move_assign_neg.cc: Removed. * testsuite/23_containers/unordered_multiset/debug/iterator_self_move_assign_neg.cc: Removed. * testsuite/23_containers/unordered_multiset/debug/self_move_assign_neg.cc: Removed. * testsuite/23_containers/unordered_set/debug/iterator_self_move_assign_neg.cc: Removed. * testsuite/23_containers/unordered_set/debug/self_move_assign_neg.cc: Removed. * testsuite/23_containers/vector/debug/iterator_self_move_assign_neg.cc: Removed. * testsuite/23_containers/vector/debug/self_move_assign_neg.cc: Removed. 2020-08-25 Patrick Palka * include/std/chrono (year_month_weekday::ok): Fix assert. 2020-08-25 Jonathan Wakely * include/std/future (future, shared_future. promise): Add is_destructible assertion (LWG 3466). Adjust string-literal for !is_array and !is_function assertions. * testsuite/30_threads/future/requirements/lwg3458.cc: Check types with no accessible destructor. Adjust expected errors. * testsuite/30_threads/promise/requirements/lwg3466.cc: Likewise. * testsuite/30_threads/shared_future/requirements/lwg3458.cc: Likewise. 2020-08-25 Patrick Palka Ed Smith-Rowland <3dw4rd@verizon.net> Jonathan Wakely * include/std/chrono (time_point::operator++) (time_point::operator--): Define. (utc_clock, tai_clock, gps_clock): Forward declare. (utc_time, utc_seconds, tai_time, tai_seconds, gps_time) (gps_seconds): Define. (is_clock, is_clock, is_clock) (is_clock_v, is_clock_v) (is_clock_v): Define these specializations. (leap_second_info): Define. (day, month, year, weekday, weekday_indexed) (weekday_last, month_day, month_day_last, month_weekday) (month_weekday_last, year_month, year_month_day) (year_month_day_last, year_month_weekday, year_month_weekday_last): Declare and later define. (last_spec, last, __detail::__days_per_month) (__detail::__days_per_month, __detail::__last_day): Define. (January, February, March, April, May, June, July, August) (September, October, November, December, Sunday, Monday, Tuesday) (Wednesday, Thursday, Friday, Saturday): Define. (weekday::operator[]): Define out-of-line. (year_month_day::_S_from_days, year_month_day::M_days_since_epoch): Likewise. (year_month_day::year_month_day, year_month_day::ok): Likewise. (__detail::__pow10, hh_mm_ss): Define. (literals::chrono_literals::operator""d) (literals::chrono_literals::operator""y): Define. (is_am, is_pm, make12, make24): Define. * testsuite/20_util/time_point/4.cc: New test. * testsuite/std/time/day/1.cc: New test. * testsuite/std/time/hh_mm_ss/1.cc: New test. * testsuite/std/time/is_am/1.cc: New test. * testsuite/std/time/is_pm/1.cc: New test. * testsuite/std/time/make12/1.cc: New test. * testsuite/std/time/make24/1.cc: New test. * testsuite/std/time/month/1.cc: New test. * testsuite/std/time/month_day/1.cc: New test. * testsuite/std/time/month_day_last/1.cc: New test. * testsuite/std/time/month_weekday/1.cc: New test. * testsuite/std/time/month_weekday_last/1.cc: New test. * testsuite/std/time/weekday/1.cc: New test. * testsuite/std/time/weekday_indexed/1.cc: New test. * testsuite/std/time/weekday_last/1.cc: New test. * testsuite/std/time/year/1.cc: New test. * testsuite/std/time/year_month/1.cc: New test. * testsuite/std/time/year_month_day/1.cc: New test. * testsuite/std/time/year_month_day_last/1.cc: New test. * testsuite/std/time/year_month_weekday/1.cc: New test. * testsuite/std/time/year_month_weekday_last/1.cc: New test. 2020-08-24 Jonathan Wakely * include/std/ranges (join_view): Add deduction guide (LWG 3474). * testsuite/std/ranges/adaptors/join_lwg3474.cc: New test. 2020-08-24 Jonathan Wakely * include/bits/iterator_concepts.h (indirectly_readable): Add partial specializations to resolve ambiguities (LWG 3446). * testsuite/24_iterators/associated_types/readable.traits.cc: Check types with both value_type and element_type. 2020-08-24 Jonathan Wakely * include/std/ranges (ranges::iota_view::size()): Perform all calculations in the right unsigned types. * testsuite/std/ranges/iota/size.cc: New test. 2020-08-24 Jonathan Wakely PR libstdc++/96766 * include/std/variant (_Variant_storage): Replace implicit conversions from size_t to __index_type with explicit casts. 2020-08-24 Jonathan Wakely * testsuite/30_threads/packaged_task/cons/alloc.cc: Run for C++11 and skip for C++17 or later. 2020-08-24 Corentin Gay * testsuite/20_util/shared_ptr/atomic/3.cc: Do not require POSIX threads and add -pthread only on targets supporting them. * testsuite/20_util/shared_ptr/thread/default_weaktoshared.cc: Likewise. * testsuite/20_util/shared_ptr/thread/mutex_weaktoshared.cc: Likewise. * testsuite/30_threads/async/42819.cc: Likewise. * testsuite/30_threads/async/49668.cc: Likewise. * testsuite/30_threads/async/54297.cc: Likewise. * testsuite/30_threads/async/any.cc: Likewise. * testsuite/30_threads/async/async.cc: Likewise. * testsuite/30_threads/async/except.cc: Likewise. * testsuite/30_threads/async/launch.cc: Likewise. * testsuite/30_threads/async/lwg2021.cc: Likewise. * testsuite/30_threads/async/sync.cc: Likewise. : Likewise. * testsuite/30_threads/call_once/39909.cc: Likewise. * testsuite/30_threads/call_once/49668.cc: Likewise. * testsuite/30_threads/call_once/60497.cc: Likewise. * testsuite/30_threads/call_once/call_once1.cc: Likewise. * testsuite/30_threads/call_once/dr2442.cc: Likewise. * testsuite/30_threads/condition_variable/54185.cc: Likewise. * testsuite/30_threads/condition_variable/cons/1.cc: Likewise. * testsuite/30_threads/condition_variable/members/1.cc: Likewise. * testsuite/30_threads/condition_variable/members/2.cc: Likewise. * testsuite/30_threads/condition_variable/members/3.cc: Likewise. * testsuite/30_threads/condition_variable/members/53841.cc: Likewise. * testsuite/30_threads/condition_variable/members/68519.cc: Likewise. * testsuite/30_threads/condition_variable/native_handle/typesizes.cc: Likewise. * testsuite/30_threads/condition_variable_any/50862.cc: Likewise. * testsuite/30_threads/condition_variable_any/53830.cc: Likewise. * testsuite/30_threads/condition_variable_any/cond.cc: Likewise. * testsuite/30_threads/condition_variable_any/cons/1.cc: Likewise. * testsuite/30_threads/condition_variable_any/members/1.cc: Likewise. * testsuite/30_threads/condition_variable_any/members/2.cc: Likewise. * testsuite/30_threads/future/cons/move.cc: Likewise. * testsuite/30_threads/future/members/45133.cc: Likewise. * testsuite/30_threads/future/members/get.cc: Likewise. * testsuite/30_threads/future/members/get2.cc: Likewise. * testsuite/30_threads/future/members/share.cc: Likewise. * testsuite/30_threads/future/members/valid.cc: Likewise. * testsuite/30_threads/future/members/wait.cc: Likewise. * testsuite/30_threads/future/members/wait_for.cc: Likewise. * testsuite/30_threads/future/members/wait_until.cc: Likewise. * testsuite/30_threads/lock/1.cc: Likewise. * testsuite/30_threads/lock/2.cc: Likewise. * testsuite/30_threads/lock/3.cc: Likewise. * testsuite/30_threads/lock/4.cc: Likewise. * testsuite/30_threads/mutex/cons/1.cc: Likewise. * testsuite/30_threads/mutex/dest/destructor_locked.cc: Likewise. * testsuite/30_threads/mutex/lock/1.cc: Likewise. * testsuite/30_threads/mutex/native_handle/1.cc: Likewise. * testsuite/30_threads/mutex/native_handle/typesizes.cc: Likewise. * testsuite/30_threads/mutex/try_lock/1.cc: Likewise. * testsuite/30_threads/mutex/try_lock/2.cc: Likewise. * testsuite/30_threads/mutex/unlock/1.cc: Likewise. * testsuite/30_threads/mutex/unlock/2.cc: Likewise. * testsuite/30_threads/packaged_task/49668.cc: Likewise. * testsuite/30_threads/packaged_task/60564.cc: Likewise. * testsuite/30_threads/packaged_task/cons/1.cc: Likewise. * testsuite/30_threads/packaged_task/cons/2.cc: Likewise. * testsuite/30_threads/packaged_task/cons/3.cc: Likewise. * testsuite/30_threads/packaged_task/cons/56492.cc: Likewise. * testsuite/30_threads/packaged_task/cons/alloc.cc: Likewise. * testsuite/30_threads/packaged_task/cons/move.cc: Likewise. * testsuite/30_threads/packaged_task/cons/move_assign.cc: Likewise. * testsuite/30_threads/packaged_task/members/at_thread_exit.cc: Likewise. * testsuite/30_threads/packaged_task/members/get_future.cc: Likewise. * testsuite/30_threads/packaged_task/members/get_future2.cc: Likewise. * testsuite/30_threads/packaged_task/members/invoke.cc: Likewise. * testsuite/30_threads/packaged_task/members/invoke2.cc: Likewise. * testsuite/30_threads/packaged_task/members/invoke3.cc: Likewise. * testsuite/30_threads/packaged_task/members/invoke4.cc: Likewise. * testsuite/30_threads/packaged_task/members/invoke5.cc: Likewise. * testsuite/30_threads/packaged_task/members/reset.cc: Likewise. * testsuite/30_threads/packaged_task/members/reset2.cc: Likewise. * testsuite/30_threads/packaged_task/members/swap.cc: Likewise. * testsuite/30_threads/packaged_task/members/valid.cc: Likewise. * testsuite/30_threads/promise/60966.cc: Likewise. * testsuite/30_threads/promise/cons/1.cc: Likewise. * testsuite/30_threads/promise/cons/alloc.cc: Likewise. * testsuite/30_threads/promise/cons/move.cc: Likewise. * testsuite/30_threads/promise/cons/move_assign.cc: Likewise. * testsuite/30_threads/promise/members/at_thread_exit.cc: Likewise. * testsuite/30_threads/promise/members/at_thread_exit2.cc: Likewise. * testsuite/30_threads/promise/members/get_future.cc: Likewise. * testsuite/30_threads/promise/members/get_future2.cc: Likewise. * testsuite/30_threads/promise/members/set_exception.cc: Likewise. * testsuite/30_threads/promise/members/set_exception2.cc: Likewise. * testsuite/30_threads/promise/members/set_value.cc: Likewise. * testsuite/30_threads/promise/members/set_value2.cc: Likewise. * testsuite/30_threads/promise/members/set_value3.cc: Likewise. * testsuite/30_threads/promise/members/swap.cc: Likewise. * testsuite/30_threads/recursive_mutex/cons/1.cc: Likewise. * testsuite/30_threads/recursive_mutex/dest/destructor_locked.cc: Likewise. * testsuite/30_threads/recursive_mutex/lock/1.cc: Likewise. * testsuite/30_threads/recursive_mutex/native_handle/1.cc: Likewise. * testsuite/30_threads/recursive_mutex/native_handle/typesizes.cc: Likewise. * testsuite/30_threads/recursive_mutex/try_lock/1.cc: Likewise. * testsuite/30_threads/recursive_mutex/try_lock/2.cc: Likewise. * testsuite/30_threads/recursive_mutex/unlock/1.cc: Likewise. * testsuite/30_threads/recursive_mutex/unlock/2.cc: Likewise. * testsuite/30_threads/recursive_timed_mutex/cons/1.cc: Likewise. * testsuite/30_threads/recursive_timed_mutex/dest/destructor_locked.cc: Likewise. * testsuite/30_threads/recursive_timed_mutex/lock/1.cc: Likewise. * testsuite/30_threads/recursive_timed_mutex/lock/2.cc: Likewise. * testsuite/30_threads/recursive_timed_mutex/native_handle/1.cc: Likewise. * testsuite/30_threads/recursive_timed_mutex/native_handle/typesizes.cc: Likewise. * testsuite/30_threads/recursive_timed_mutex/try_lock/1.cc: Likewise. * testsuite/30_threads/recursive_timed_mutex/try_lock/2.cc: Likewise. * testsuite/30_threads/recursive_timed_mutex/try_lock_for/1.cc: Likewise. * testsuite/30_threads/recursive_timed_mutex/try_lock_for/2.cc: Likewise. * testsuite/30_threads/recursive_timed_mutex/try_lock_for/3.cc: Likewise. * testsuite/30_threads/recursive_timed_mutex/try_lock_until/1.cc: Likewise. * testsuite/30_threads/recursive_timed_mutex/try_lock_until/2.cc: Likewise. * testsuite/30_threads/recursive_timed_mutex/unlock/1.cc: Likewise. * testsuite/30_threads/recursive_timed_mutex/unlock/2.cc: Likewise. * testsuite/30_threads/shared_future/cons/move.cc: Likewise. * testsuite/30_threads/shared_future/members/45133.cc: Likewise. * testsuite/30_threads/shared_future/members/get.cc: Likewise. * testsuite/30_threads/shared_future/members/get2.cc: Likewise. * testsuite/30_threads/shared_future/members/valid.cc: Likewise. * testsuite/30_threads/shared_future/members/wait.cc: Likewise. * testsuite/30_threads/shared_future/members/wait_for.cc: Likewise. * testsuite/30_threads/shared_future/members/wait_until.cc: Likewise. * testsuite/30_threads/shared_lock/cons/1.cc: Likewise. * testsuite/30_threads/shared_lock/cons/2.cc: Likewise. * testsuite/30_threads/shared_lock/cons/3.cc: Likewise. * testsuite/30_threads/shared_lock/cons/4.cc: Likewise. * testsuite/30_threads/shared_lock/cons/5.cc: Likewise. * testsuite/30_threads/shared_lock/cons/6.cc: Likewise. * testsuite/30_threads/shared_lock/locking/1.cc: Likewise. * testsuite/30_threads/shared_lock/locking/2.cc: Likewise. * testsuite/30_threads/shared_lock/locking/3.cc: Likewise. * testsuite/30_threads/shared_lock/locking/4.cc: Likewise. * testsuite/30_threads/shared_lock/modifiers/1.cc: Likewise. * testsuite/30_threads/shared_mutex/cons/1.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/shared_timed_mutex/cons/1.cc: Likewise. * testsuite/30_threads/shared_timed_mutex/try_lock/1.cc: Likewise. * testsuite/30_threads/shared_timed_mutex/try_lock/2.cc: Likewise. * testsuite/30_threads/shared_timed_mutex/try_lock/3.cc: Likewise. * testsuite/30_threads/shared_timed_mutex/unlock/1.cc: Likewise. * testsuite/30_threads/this_thread/1.cc: Likewise. * testsuite/30_threads/this_thread/sleep_for-mt.cc: Likewise. * testsuite/30_threads/this_thread/sleep_until-mt.cc: Likewise. * testsuite/30_threads/thread/cons/1.cc: Likewise. * testsuite/30_threads/thread/cons/2.cc: Likewise. * testsuite/30_threads/thread/cons/3.cc: Likewise. * testsuite/30_threads/thread/cons/4.cc: Likewise. * testsuite/30_threads/thread/cons/49668.cc: Likewise. * testsuite/30_threads/thread/cons/5.cc: Likewise. * testsuite/30_threads/thread/cons/6.cc: Likewise. * testsuite/30_threads/thread/cons/7.cc: Likewise. * testsuite/30_threads/thread/cons/8.cc: Likewise. * testsuite/30_threads/thread/cons/9.cc: Likewise. * testsuite/30_threads/thread/cons/moveable.cc: Likewise. * testsuite/30_threads/thread/cons/terminate.cc: Likewise. * testsuite/30_threads/thread/members/1.cc: Likewise. * testsuite/30_threads/thread/members/2.cc: Likewise. * testsuite/30_threads/thread/members/3.cc: Likewise. * testsuite/30_threads/thread/members/4.cc: Likewise. * testsuite/30_threads/thread/members/5.cc: Likewise. * testsuite/30_threads/thread/members/hardware_concurrency.cc: Likewise. * testsuite/30_threads/thread/native_handle/typesizes.cc: Likewise. * testsuite/30_threads/thread/swap/1.cc: Likewise. * testsuite/30_threads/timed_mutex/cons/1.cc: Likewise. * testsuite/30_threads/timed_mutex/dest/destructor_locked.cc: Likewise. * testsuite/30_threads/timed_mutex/lock/1.cc: Likewise. * testsuite/30_threads/timed_mutex/native_handle/1.cc: Likewise. * testsuite/30_threads/timed_mutex/native_handle/typesizes.cc: Likewise. * testsuite/30_threads/timed_mutex/try_lock/1.cc: Likewise. * testsuite/30_threads/timed_mutex/try_lock/2.cc: Likewise. * testsuite/30_threads/timed_mutex/try_lock_for/1.cc: Likewise. * testsuite/30_threads/timed_mutex/try_lock_for/2.cc: Likewise. * testsuite/30_threads/timed_mutex/try_lock_for/3.cc: Likewise. * testsuite/30_threads/timed_mutex/try_lock_until/1.cc: Likewise. * testsuite/30_threads/timed_mutex/try_lock_until/2.cc: Likewise. * testsuite/30_threads/timed_mutex/try_lock_until/57641.cc: Likewise. * testsuite/30_threads/timed_mutex/unlock/1.cc: Likewise. * testsuite/30_threads/timed_mutex/unlock/2.cc: Likewise. * testsuite/30_threads/try_lock/1.cc: Likewise. * testsuite/30_threads/try_lock/2.cc: Likewise. * testsuite/30_threads/try_lock/3.cc: Likewise. * testsuite/30_threads/try_lock/4.cc: Likewise. * testsuite/30_threads/unique_lock/cons/1.cc: Likewise. * testsuite/30_threads/unique_lock/cons/2.cc: Likewise. * testsuite/30_threads/unique_lock/cons/3.cc: Likewise. * testsuite/30_threads/unique_lock/cons/4.cc: Likewise. * testsuite/30_threads/unique_lock/cons/5.cc: Likewise. * testsuite/30_threads/unique_lock/cons/6.cc: Likewise. * testsuite/30_threads/unique_lock/locking/1.cc: Likewise. * testsuite/30_threads/unique_lock/locking/2.cc: Likewise. * testsuite/30_threads/unique_lock/locking/3.cc: Likewise. * testsuite/30_threads/unique_lock/locking/4.cc: Likewise. * testsuite/30_threads/unique_lock/modifiers/1.cc: Likewise. 2020-08-21 Jonathan Wakely PR libstdc++/96736 * testsuite/17_intro/headers/c++1998/all_attributes.cc: Do not test "cold" on darwin. * testsuite/17_intro/headers/c++2011/all_attributes.cc: Likewise. * testsuite/17_intro/headers/c++2014/all_attributes.cc: Likewise. * testsuite/17_intro/headers/c++2017/all_attributes.cc: Likewise. * testsuite/17_intro/headers/c++2020/all_attributes.cc: Likewise. 2020-08-21 Jonathan Wakely PR libstdc++/96718 * testsuite/25_algorithms/pstl/feature_test-2.cc: Require tbb-backend effective target. * testsuite/25_algorithms/pstl/feature_test-3.cc: Likewise. * testsuite/25_algorithms/pstl/feature_test-5.cc: Likewise. * testsuite/25_algorithms/pstl/feature_test.cc: Likewise. 2020-08-20 Jonathan Wakely * include/bits/iterator_concepts.h [__STRICT_ANSI__] (incrementable_traits<__int128>): Define specialization. (incrementable_traits): Likewise. * testsuite/std/ranges/iota/96042.cc: Test iota_view with __int128. 2020-08-19 Jonathan Wakely Patrick Palka PR libstdc++/96042 * include/bits/range_access.h (__detail::__to_unsigned_like): Do not use make_unsigned_t in the return type, as it can result in an error before the integral constraint is checked. [__STRICT_ANSI__]: Add overloads for 128-bit integer types. (__detail::__make_unsigned_like_t): Define as the return type of __to_unsigned_like. * testsuite/std/ranges/subrange/96042.cc: New test. 2020-08-19 Jonathan Wakely * include/bits/stl_tree.h (operator!=, operator>, operator<=) (operator>=): Remove deprecated functions. 2020-08-19 Jonathan Wakely PR libstdc++/96042 * include/ext/numeric_traits.h (__is_integer_nonstrict): New trait which is true for 128-bit integers even in strict modes. (__numeric_traits_integer, __numeric_traits): Use __is_integer_nonstrict instead of __is_integer. * include/std/limits [__STRICT_ANSI__ && __SIZEOF_INT128__] (numeric_limits<__int128>, (numeric_limits): Define. * testsuite/std/ranges/iota/96042.cc: New test. 2020-08-19 Jonathan Wakely * include/bits/c++config (_GLIBCXX_DEPRECATED_SUGGEST) (_GLIBCXX11_DEPRECATED, _GLIBCXX11_DEPRECATED_SUGGEST) (_GLIBCXX17_DEPRECATED_SUGGEST, _GLIBCXX20_DEPRECATED_SUGGEST): Add new macros to comment. 2020-08-19 Patrick Palka * include/Makefile.am (bits_headers): Add new header . * include/Makefile.in: Regenerate. * include/bits/iterator_concepts.h (ranges::__detail::__max_diff_type): Remove definition, replace with forward declaration of class __max_diff_type. (__detail::__max_size_type): Remove definition, replace with forward declaration of class __max_size_type. (__detail::__is_unsigned_int128, __is_signed_int128) (__is_int128): New concepts. (__detail::__is_integer_like): Accept __int128 and unsigned __int128. (__detail::__is_signed_integer_like): Accept __int128. * include/bits/max_size_type.h: New header. * include/bits/range_access.h: Include . (__detail::__to_unsigned_like): Two new overloads. * testsuite/std/ranges/iota/difference_type.cc: New test. * testsuite/std/ranges/iota/max_size_type.cc: New test. 2020-08-19 Jonathan Wakely * include/bits/c++config (_GLIBCXX_DEPRECATED): Define for all standard modes. (_GLIBCXX_DEPRECATED_SUGGEST): New macro for "use 'foo' instead" message in deprecated warnings. (_GLIBCXX11_DEPRECATED, _GLIBCXX11_DEPRECATED_SUGGEST): New macros for marking features deprecated in C++11. (_GLIBCXX17_DEPRECATED_SUGGEST, _GLIBCXX20_DEPRECATED_SUGGEST): New macros. * include/backward/auto_ptr.h (auto_ptr_ref, auto_ptr): Use _GLIBCXX11_DEPRECATED instead of _GLIBCXX_DEPRECATED. (auto_ptr): Use _GLIBCXX11_DEPRECATED_SUGGEST. * include/backward/binders.h (binder1st, binder2nd): Likewise. * include/bits/ios_base.h (io_state, open_mode, seek_dir) (streampos, streamoff): Use _GLIBCXX_DEPRECATED_SUGGEST. * include/std/streambuf (stossc): Replace C++11 attribute with _GLIBCXX_DEPRECATED_SUGGEST. * include/std/type_traits (__is_nullptr_t): Use _GLIBCXX_DEPRECATED_SUGGEST instead of _GLIBCXX_DEPRECATED. * testsuite/27_io/types/1.cc: Check for deprecated warnings. Also check for io_state, open_mode and seek_dir typedefs. 2020-08-19 Antony Polukhin PR libstdc++/71579 * include/std/type_traits (invoke_result, is_nothrow_invocable_r) Add static_asserts to make sure that the argument of the type trait is not misused with incomplete types. (is_swappable_with, is_nothrow_swappable_with): Add static_asserts to make sure that the first and second arguments of the type trait are not misused with incomplete types. * testsuite/20_util/invoke_result/incomplete_neg.cc: New test. * testsuite/20_util/is_nothrow_invocable/incomplete_neg.cc: New test. * testsuite/20_util/is_nothrow_swappable/incomplete_neg.cc: New test. * testsuite/20_util/is_nothrow_swappable_with/incomplete_neg.cc: New test. * testsuite/20_util/is_swappable_with/incomplete_neg.cc: New test. 2020-08-18 David Edelsohn Clement Chigot * config/os/aix/t-aix: Add complementary mode object files to libsupc++.a 2020-08-18 Jonathan Wakely * testsuite/17_intro/headers/c++1998/all_attributes.cc: Check "cold" isn't used in the library. Also check . * testsuite/17_intro/headers/c++2011/all_attributes.cc: Likewise. * testsuite/17_intro/headers/c++2014/all_attributes.cc: Likewise. * testsuite/17_intro/headers/c++2017/all_attributes.cc: Likewise. * testsuite/17_intro/headers/c++2020/all_attributes.cc: Likewise. 2020-08-18 Jonathan Wakely PR libstdc++/69724 * include/std/future (__future_base::_S_make_deferred_state) (__future_base::_S_make_async_state): Remove. (__future_base::_Deferred_state): Change constructor to accept a parameter pack of arguments and forward them to the call wrapper. (__future_base::_Async_state_impl): Likewise. Replace lambda expression with a named member function. (async): Construct state object directly from the arguments, instead of using thread::__make_invoker, _S_make_deferred_state and _S_make_async_state. Move shared state into the returned future. * include/std/thread (thread::_Call_wrapper): New alias template for use by constructor and std::async. (thread::thread(Callable&&, Args&&...)): Create state object directly instead of using _S_make_state. (thread::__make_invoker, thread::__decayed_tuple) (thread::_S_make_state): Remove. * testsuite/30_threads/async/69724.cc: New test. 2020-08-17 Jonathan Wakely PR libstdc++/55713 PR libstdc++/71096 PR libstdc++/93147 * include/std/tuple [__has_cpp_attribute(no_unique_address)] (_Head_base): New definition of the partial specialization, using [[no_unique_address]] instead of inheritance. * testsuite/libstdc++-prettyprinters/48362.cc: Adjust expected output. * testsuite/20_util/tuple/comparison_operators/93147.cc: New test. * testsuite/20_util/tuple/creation_functions/55713.cc: New test. * testsuite/20_util/tuple/element_access/71096.cc: New test. 2020-08-14 Lewis Hyatt * testsuite/lib/libstdc++.exp: Use the new option -fdiagnostics-plain-output. 2020-08-13 Jonathan Wakely * acinclude.m4 (GLIBCXX_ENABLE_CHEADERS): Warn if the c_std option is used and fail unless --enable-cheaders-obsolete is also used. * configure: Regenerate. 2020-08-12 Jonathan Wakely PR libstdc++/85828 * include/bits/basic_string.h (operator=(basic_string&&)): Check for self-move before copying with char_traits::copy. * include/bits/hashtable.h (operator=(_Hashtable&&)): Check for self-move. * include/bits/stl_deque.h (_M_move_assign1(deque&&, false_type)): Check for equal allocators. * include/bits/stl_list.h (_M_move_assign(list&&, true_type)): Call clear() instead of _M_clear(). * include/debug/formatter.h (__msg_self_move_assign): Change comment. * include/debug/macros.h (__glibcxx_check_self_move_assign): (_GLIBCXX_DEBUG_VERIFY): Remove. * include/debug/safe_container.h (operator=(_Safe_container&&)): Remove assertion check for safe move and make it well-defined. * include/debug/safe_iterator.h (operator=(_Safe_iterator&&)): Remove assertion check for self-move. * include/debug/safe_local_iterator.h (operator=(_Safe_local_iterator&&)): Likewise. * testsuite/21_strings/basic_string/cons/char/self_move.cc: New test. * testsuite/23_containers/deque/cons/self_move.cc: New test. * testsuite/23_containers/forward_list/cons/self_move.cc: New test. * testsuite/23_containers/list/cons/self_move.cc: New test. * testsuite/23_containers/set/cons/self_move.cc: New test. * testsuite/23_containers/unordered_set/cons/self_move.cc: New test. * testsuite/23_containers/vector/cons/self_move.cc: New test. 2020-08-11 François Dumont PR libstdc++/91620 * include/bits/forward_list.tcc (forward_list<>::remove): Collect nodes to destroy in an intermediate forward_list. (forward_list<>::remove_if, forward_list<>::unique): Likewise. * include/bits/list.tcc (list<>::remove, list<>::unique): Likewise. (list<>::remove_if): Likewise. * include/debug/forward_list (forward_list<>::_M_erase_after): Remove. (forward_list<>::erase_after): Adapt. (forward_list<>::remove, forward_list<>::remove_if): Collect nodes to destroy in an intermediate forward_list. (forward_list<>::unique): Likewise. * include/debug/list (list<>::remove, list<>::unique): Likewise. (list<>::remove_if): Likewise. * testsuite/23_containers/forward_list/operations/91620.cc: New test. * testsuite/23_containers/list/operations/91620.cc: New test. 2020-08-11 Jonathan Wakely * testsuite/30_threads/thread/cons/84535.cc: Use a custom namespace. * testsuite/30_threads/thread/cons/lwg2097.cc: Likewise. 2020-08-11 Jonathan Wakely PR libstdc++/89760 * include/experimental/executor [!_GLIBCXX_HAS_GTHREADS]: (execution_context::mutex_type): Define dummy mutex type. (system_context): Use execution_context::mutex_type. (system_context) [!_GLIBCXX_HAS_GTHREADS]: Define dummy thread and condition variable types. [!_GLIBCXX_HAS_GTHREADS] (system_context::_M_run()): Do not define. (system_context::_M_post) [!_GLIBCXX_HAS_GTHREADS]: Throw an exception when threads aren't available. (strand::running_in_this_thread()): Defer to _M_state. (strand::_State::running_in_this_thread()): New function. (use_future_t): Do not depend on _GLIBCXX_USE_C99_STDINT_TR1. * include/experimental/io_context (io_context): Use the execution_context::mutex_type alias. Replace stack of thread IDs with counter. * testsuite/experimental/net/execution_context/use_service.cc: Enable test for non-pthread targets. 2020-08-11 Jonathan Wakely * include/experimental/executor (system_context::a__tag): Make default constructor explicit. 2020-08-11 Jonathan Wakely * include/experimental/executor (system_context::_M_run()): Fix predicate. * testsuite/experimental/net/system_context/1.cc: New test. 2020-08-11 Jonathan Wakely * include/std/stop_token: Check _GLIBCXX_HAS_GTHREADS using #ifdef instead of #if. (stop_token::_S_yield()): Check _GLIBCXX_HAS_GTHREADS before using __gthread_yield. 2020-08-11 Jonathan Wakely * include/std/thread [!_GLIBCXX_HAS_GTHREADS] (this_thread::yield) (this_thread::sleep_until): Define. [!_GLIBCXX_HAS_GTHREADS] (this_thread::sleep_for): Define. Replace use of __gthread_time_t typedef with timespec. * src/c++11/thread.cc [!_GLIBCXX_HAS_GTHREADS] (__sleep_for): Likewise. * testsuite/30_threads/this_thread/2.cc: Moved to... * testsuite/30_threads/this_thread/yield.cc: ...here. * testsuite/30_threads/this_thread/3.cc: Moved to... * testsuite/30_threads/this_thread/sleep_for-mt.cc: ...here. * testsuite/30_threads/this_thread/4.cc: Moved to... * testsuite/30_threads/this_thread/sleep_until-mt.cc: ...here. * testsuite/30_threads/this_thread/58038.cc: Add dg-require-sleep. * testsuite/30_threads/this_thread/60421.cc: Likewise. * testsuite/30_threads/this_thread/sleep_for.cc: New test. * testsuite/30_threads/this_thread/sleep_until.cc: New test. 2020-08-10 Jonathan Wakely PR libstdc++/94681 * src/c++17/fs_ops.cc (read_symlink): Use posix::lstat instead of calling ::lstat directly. * src/filesystem/ops.cc (read_symlink): Likewise. 2020-08-10 Jonathan Wakely * python/libstdcxx/v6/printers.py (UniquePointerPrinter.__init__): Use gdb.Type.strip_typedefs(). * testsuite/libstdc++-prettyprinters/compat.cc: Use a typedef in the emulated old type. 2020-08-10 Jonathan Wakely PR libstdc++/94681 * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Do not depend on $enable_libstdcxx_filesystem_ts. * configure: Regenerate. 2020-08-10 Jonathan Wakely PR libstdc++/93904 * include/bits/stl_iterator.h (inserter): Do not deduce iterator type (LWG 561). * testsuite/24_iterators/insert_iterator/dr561.cc: New test. 2020-08-10 Jonathan Wakely * include/bits/basic_string.tcc [_GLIBCXX_USE_CXX11_ABI=0] (basic_string::reserve()): Do nothing if exceptions are not enabled. 2020-08-10 Jonathan Wakely PR libstdc++/95749 * src/filesystem/ops-common.h [_GLIBCXX_FILESYSTEM_IS_WINDOWS] (stat_type): Change to __stat64. (stat): Use _wstat64. 2020-08-07 Jonathan Wakely PR libstdc++/96303 * include/debug/bitset (bitset::operator==): Call _M_base() on right operand. (bitset::operator!=): Likewise, but don't define it at all when default comparisons are supported by the compiler. * testsuite/23_containers/bitset/operations/96303.cc: New test. 2020-08-07 Jonathan Wakely * testsuite/18_support/comparisons/algorithms/partial_order.cc: Replace VERIFY with static_assert where the compiler now allows it. * testsuite/18_support/comparisons/algorithms/weak_order.cc: Likewise. 2020-08-07 Jonathan Wakely * config/abi/pre/gnu.ver: Fix wildcards for wstring symbols. 2020-08-06 Andrew Luo Jonathan Wakely * config/abi/pre/gnu.ver (GLIBCXX_3.4): Use less greedy patterns for basic_string members. (GLIBCXX_3.4.29): Export new basic_string::reserve symbols. * doc/xml/manual/status_cxx2020.xml: Update P0966 status. * include/bits/basic_string.h (shrink_to_fit()): Call reserve(). (reserve(size_type)): Remove default argument. (reserve()): Declare new overload. [!_GLIBCXX_USE_CXX11_ABI] (shrink_to_fit, reserve): Likewise. * include/bits/basic_string.tcc (reserve(size_type)): Remove support for shrinking capacity. (reserve()): Perform shrink-to-fit operation. [!_GLIBCXX_USE_CXX11_ABI] (reserve): Likewise. * testsuite/21_strings/basic_string/capacity/1.cc: Adjust to reflect new behavior. * testsuite/21_strings/basic_string/capacity/char/1.cc: Likewise. * testsuite/21_strings/basic_string/capacity/char/18654.cc: Likewise. * testsuite/21_strings/basic_string/capacity/char/2.cc: Likewise. * testsuite/21_strings/basic_string/capacity/wchar_t/1.cc: Likewise. * testsuite/21_strings/basic_string/capacity/wchar_t/18654.cc: Likewise. * testsuite/21_strings/basic_string/capacity/wchar_t/2.cc: Likewise. 2020-08-06 Jonathan Wakely * include/bits/basic_string.tcc (operator>>(basic_istream&, basic_string&)): Do not set eofbit if extraction stopped after in.width() characters. * src/c++98/istream-string.cc (operator>>(istream&, string&)): Likewise. * include/bits/istream.tcc (__istream_extract): Do not set eofbit if extraction stopped after n-1 characters. * src/c++98/istream.cc (__istream_extract): Likewise. * testsuite/21_strings/basic_string/inserters_extractors/char/13.cc: New test. * testsuite/21_strings/basic_string/inserters_extractors/wchar_t/13.cc: New test. * testsuite/27_io/basic_istream/extractors_character/char/5.cc: New test. * testsuite/27_io/basic_istream/extractors_character/wchar_t/5.cc: New test. 2020-08-06 Jonathan Wakely PR libstdc++/96484 * src/c++17/fs_ops.cc (fs::read_symlink): Return an error immediately for non-symlinks. * src/filesystem/ops.cc (fs::read_symlink): Likewise. 2020-08-06 Jonathan Wakely * include/std/istream (operator>>(istream&, char*)): Add attributes to get warnings for pointers that are null or known to point to the end of a buffer. Request upper bound from __builtin_object_size check and handle zero-sized buffer case. (operator>>(istream&, signed char)) (operator>>(istream&, unsigned char*)): Add attributes. * testsuite/27_io/basic_istream/extractors_character/char/overflow.cc: Check extracting into the middle of a buffer. * testsuite/27_io/basic_istream/extractors_character/wchar_t/overflow.cc: New test. 2020-08-05 Jonathan Wakely * include/std/atomic (atomic::store): Reformat. 2020-08-05 Jonathan Wakely * doc/xml/manual/status_cxx2017.xml: Replace oneAPI DPC++ link with LLVM repo for PSTL. * doc/html/manual/status.html: Regenerate. 2020-08-05 Jonathan Wakely * config/abi/pre/gnu.ver (GLIBCXX_3.4.29): Export new symbols. * include/bits/istream.tcc (__istream_extract): New function template implementing both of operator>>(istream&, char*) and operator>>(istream&, char(&)[N]). Add explicit instantiation declaration for it. Remove explicit instantiation declarations for old function templates. * include/std/istream (__istream_extract): Declare. (operator>>(basic_istream&, C*)): Define inline and simply call __istream_extract. (operator>>(basic_istream&, signed char*)): Likewise. (operator>>(basic_istream&, unsigned char*)): Likewise. (operator>>(basic_istream&, C(7)[N])): Define for LWG 2499. (operator>>(basic_istream&, signed char(&)[N])): Likewise. (operator>>(basic_istream&, unsigned char(&)[N])): Likewise. * include/std/streambuf (basic_streambuf): Declare char overload of __istream_extract as a friend. * src/c++11/istream-inst.cc: Add explicit instantiation definition for wchar_t overload of __istream_extract. Remove explicit instantiation definitions of old operator>> overloads for versioned-namespace build. * src/c++98/istream.cc (operator>>(istream&, char*)): Replace with __istream_extract(istream&, char*, streamsize). * testsuite/27_io/basic_istream/extractors_character/char/3.cc: Do not use variable-length array. * testsuite/27_io/basic_istream/extractors_character/char/4.cc: Do not run test for C++20. * testsuite/27_io/basic_istream/extractors_character/char/9555-ic.cc: Do not test writing to pointers for C++20. * testsuite/27_io/basic_istream/extractors_character/char/9826.cc: Use array instead of pointer. * testsuite/27_io/basic_istream/extractors_character/wchar_t/3.cc: Do not use variable-length array. * testsuite/27_io/basic_istream/extractors_character/wchar_t/4.cc: Do not run test for C++20. * testsuite/27_io/basic_istream/extractors_character/wchar_t/9555-ic.cc: Do not test writing to pointers for C++20. * testsuite/27_io/basic_istream/extractors_character/char/lwg2499.cc: New test. * testsuite/27_io/basic_istream/extractors_character/char/lwg2499_neg.cc: New test. * testsuite/27_io/basic_istream/extractors_character/char/overflow.cc: New test. * testsuite/27_io/basic_istream/extractors_character/wchar_t/lwg2499.cc: New test. * testsuite/27_io/basic_istream/extractors_character/wchar_t/lwg2499_neg.cc: New test. 2020-08-01 Gerald Pfeifer * doc/xml/manual/using_exceptions.xml: Move www.stroustrup.com to https. * doc/html/manual/using_exceptions.html: Regenerate. 2020-07-31 Gerald Pfeifer * doc/xml/manual/status_cxx2017.xml: ParallelSTL is now part of oneAPI DPC++ Library on Github. * doc/html/manual/status.html: Regenerate. 2020-07-31 François Dumont * include/bits/stl_bvector.h [_GLIBCXX_INLINE_VERSION](_Bvector_impl_data::_M_start): Define as _Bit_type*. (_Bvector_impl_data(const _Bvector_impl_data&)): Default. (_Bvector_impl_data(_Bvector_impl_data&&)): Delegate to latter. (_Bvector_impl_data::operator=(const _Bvector_impl_data&)): Default. (_Bvector_impl_data::_M_move_data(_Bvector_impl_data&&)): Use latter. (_Bvector_impl_data::_M_reset()): Likewise. (_Bvector_impl_data::_M_swap_data): New. (_Bvector_impl::_Bvector_impl(_Bvector_impl&&)): Implement explicitely. (_Bvector_impl::_Bvector_impl(_Bit_alloc_type&&, _Bvector_impl&&)): New. (_Bvector_base::_Bvector_base(_Bvector_base&&, const allocator_type&)): New, use latter. (vector::vector(vector&&, const allocator_type&, true_type)): New, use latter. (vector::vector(vector&&, const allocator_type&, false_type)): New. (vector::vector(vector&&, const allocator_type&)): Use latters. (vector::vector(const vector&, const allocator_type&)): Adapt. [__cplusplus >= 201103](vector::vector(_InputIt, _InputIt, const allocator_type&)): Use _M_initialize_range. (vector::operator[](size_type)): Use iterator operator[]. (vector::operator[](size_type) const): Use const_iterator operator[]. (vector::swap(vector&)): Add assertions on allocators. Use _M_swap_data. [__cplusplus >= 201103](vector::insert(const_iterator, _InputIt, _InputIt)): Use _M_insert_range. (vector::_M_initialize(size_type)): Adapt. [__cplusplus >= 201103](vector::_M_initialize_dispatch): Remove. [__cplusplus >= 201103](vector::_M_insert_dispatch): Remove. * python/libstdcxx/v6/printers.py (StdVectorPrinter._iterator): Stop using start _M_offset. (StdVectorPrinter.to_string): Likewise. * testsuite/23_containers/vector/bool/allocator/swap.cc: Adapt. * testsuite/23_containers/vector/bool/cons/noexcept_move_construct.cc: Add check. 2020-07-31 Jonathan Wakely * testsuite/27_io/basic_istream/ignore/char/94749.cc: Use 0 instead of nullptr. * testsuite/27_io/basic_istream/ignore/wchar_t/94749.cc: Likewise. 2020-07-31 Jonathan Wakely * testsuite/20_util/specialized_algorithms/uninitialized_fill_n/sizes.cc: Move struct to namespace scope. 2020-07-31 Jonathan Wakely * testsuite/26_numerics/numbers/float128.cc: Check __STRICT_ANSI__ before using __float128. * testsuite/std/concepts/concepts.lang/concept.arithmetic/floating_point.cc: Likewise. 2020-07-31 Jonathan Wakely * testsuite/18_support/set_terminate.cc: Require C++11 or higher. * testsuite/28_regex/simple_c++11.cc: Likewise. * testsuite/tr1/headers/c++200x/complex.cc: Likewise. * testsuite/24_iterators/headers/iterator/synopsis.cc: Require C++14 or lower. 2020-07-31 Jonathan Wakely * testsuite/23_containers/span/back_assert_neg.cc: Split c++2a effective-target from xfail selector. * testsuite/23_containers/span/first_2_assert_neg.cc: Likewise. * testsuite/23_containers/span/first_assert_neg.cc: Likewise. * testsuite/23_containers/span/front_assert_neg.cc: Likewise. * testsuite/23_containers/span/index_op_assert_neg.cc: Likewise. * testsuite/23_containers/span/last_2_assert_neg.cc: Likewise. * testsuite/23_containers/span/last_assert_neg.cc: Likewise. * testsuite/23_containers/span/subspan_2_assert_neg.cc: Likewise. * testsuite/23_containers/span/subspan_3_assert_neg.cc: Likewise. * testsuite/23_containers/span/subspan_4_assert_neg.cc: Likewise. * testsuite/23_containers/span/subspan_5_assert_neg.cc: Likewise. * testsuite/23_containers/span/subspan_6_assert_neg.cc: Likewise. * testsuite/23_containers/span/subspan_assert_neg.cc: Likewise. 2020-07-31 Jonathan Wakely * testsuite/20_util/reference_wrapper/83427.cc: Adjust effective-target to specific language mode only. * testsuite/24_iterators/headers/iterator/range_access_c++11.cc: Likewise. * testsuite/24_iterators/headers/iterator/range_access_c++14.cc: Likewise. * testsuite/24_iterators/headers/iterator/synopsis_c++11.cc: Likewise. * testsuite/24_iterators/headers/iterator/synopsis_c++14.cc: Likewise. * testsuite/26_numerics/valarray/69116.cc: Likewise. * testsuite/30_threads/headers/condition_variable/std_c++0x_neg.cc: Remove whitespace at end of file. * testsuite/30_threads/headers/future/std_c++0x_neg.cc: Likewise. 2020-07-31 Jonathan Wakely * testsuite/17_intro/headers/c++2017/all_attributes.cc: Add c++17 effective-target. * testsuite/17_intro/headers/c++2017/all_no_exceptions.cc: Likewise. * testsuite/17_intro/headers/c++2017/all_no_rtti.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/stdc++.cc: Likewise. * testsuite/17_intro/headers/c++2017/stdc++_multiple_inclusion.cc: Likewise. * testsuite/18_support/uncaught_exceptions/uncaught_exceptions.cc: Likewise. * testsuite/19_diagnostics/error_code/is_error_code_v.cc: Likewise. * testsuite/20_util/any/assign/1.cc: Likewise. * 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/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_no_rtti.cc: Likewise. * testsuite/20_util/any/misc/swap.cc: Likewise. * testsuite/20_util/any/modifiers/1.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/as_const/1.cc: Likewise. * testsuite/20_util/as_const/rvalue_neg.cc: Likewise. * testsuite/20_util/bind/is_placeholder_v.cc: Likewise. * testsuite/20_util/bool_constant/requirements.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/function_objects/invoke/59768.cc: Likewise. * testsuite/20_util/function_objects/not_fn/1.cc: Likewise. * testsuite/20_util/function_objects/searchers.cc: Likewise. * testsuite/20_util/in_place/requirements.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_nothrow_invocable/requirements/explicit_instantiation.cc: Likewise. * testsuite/20_util/is_nothrow_invocable/requirements/typedefs.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/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/optional/constexpr/make_optional.cc: Likewise. * testsuite/20_util/optional/constexpr/observers/2.cc: Likewise. * testsuite/20_util/optional/constexpr/observers/3.cc: Likewise. * testsuite/20_util/optional/hash.cc: Likewise. * testsuite/20_util/pair/swap_cxx17.cc: Likewise. * testsuite/20_util/ratio/requirements/ratio_equal_v.cc: Likewise. * testsuite/20_util/shared_ptr/requirements/weak_type.cc: Likewise. * testsuite/20_util/specialized_algorithms/memory_management_tools/1.cc: Likewise. * testsuite/20_util/tuple/apply/1.cc: Likewise. * testsuite/20_util/tuple/make_from_tuple/1.cc: Likewise. * testsuite/20_util/tuple/swap_cxx17.cc: Likewise. * testsuite/20_util/tuple/tuple_size_v.cc: Likewise. * testsuite/20_util/unique_ptr/specialized_algorithms/swap_cxx17.cc: Likewise. * testsuite/20_util/uses_allocator/requirements/uses_allocator_v.cc: Likewise. * testsuite/20_util/variant/any.cc: Likewise. * testsuite/20_util/variant/compile.cc: Likewise. * testsuite/20_util/variant/hash.cc: Likewise. * testsuite/20_util/variant/index_type.cc: Likewise. * testsuite/20_util/variant/run.cc: Likewise. * testsuite/20_util/void_t/1.cc: Likewise. * testsuite/21_strings/basic_string/79162.cc: Likewise. * testsuite/21_strings/basic_string/cons/char/7.cc: Likewise. * testsuite/21_strings/basic_string/cons/wchar_t/7.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/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/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/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/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/empty.cc: Likewise. * testsuite/21_strings/basic_string_view/element_access/char/front_back.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/empty.cc: Likewise. * testsuite/21_strings/basic_string_view/element_access/wchar_t/front_back.cc: Likewise. * testsuite/21_strings/basic_string_view/include.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/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/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/copy/char/1.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/copy/wchar_t/1.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/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/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/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/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/typedefs.cc: Likewise. * testsuite/21_strings/basic_string_view/typedefs.cc: Likewise. * testsuite/21_strings/basic_string_view/types/1.cc: Likewise. * testsuite/23_containers/array/specialized_algorithms/swap_cxx17.cc: Likewise. * testsuite/23_containers/map/modifiers/extract.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/modifiers/extract.cc: Likewise. * testsuite/23_containers/multimap/modifiers/merge.cc: Likewise. * testsuite/23_containers/multiset/modifiers/extract.cc: Likewise. * testsuite/23_containers/multiset/modifiers/merge.cc: Likewise. * testsuite/23_containers/set/modifiers/extract.cc: Likewise. * testsuite/23_containers/set/modifiers/merge.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/modifiers/extract.cc: Likewise. * testsuite/23_containers/unordered_multimap/modifiers/merge.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/modifiers/extract.cc: Likewise. * testsuite/23_containers/unordered_set/modifiers/merge.cc: Likewise. * testsuite/24_iterators/headers/iterator/range_access_c++17.cc: Likewise. * testsuite/24_iterators/headers/iterator/synopsis_c++17.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/26_numerics/headers/cmath/functions_std_c++17.cc: Likewise. * testsuite/26_numerics/headers/cmath/special_functions_global.cc: Likewise. * testsuite/27_io/basic_ostream/inserters_other/char/lwg2221.cc: Likewise. * testsuite/29_atomics/atomic/is_always_lock_free.cc: Likewise. * testsuite/29_atomics/atomic_integral/is_always_lock_free.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. 2020-07-31 Jonathan Wakely PR libstdc++/96382 * include/bits/stl_iterator.h (reverse_iterator): Friend declaration should not depend on __cplusplus. 2020-07-31 Jonathan Wakely * testsuite/experimental/filesystem/filesystem_error/cons.cc: Remove -std=gnu++17 option. 2020-07-31 Jonathan Wakely * testsuite/20_util/is_aggregate/value.cc: Adjust for changes to definition of aggregates in C++20. * testsuite/20_util/optional/requirements.cc: Adjust for defaulted comparisons in C++20. 2020-07-31 Jonathan Wakely * testsuite/20_util/tuple/78939.cc: Suppress warnings about deprecation of volatile-qualified structured bindings in C++20. * testsuite/20_util/variable_templates_for_traits.cc: Likewise for deprecation of is_pod in C++20 2020-07-31 Jonathan Wakely * testsuite/20_util/time_point_cast/rounding.cc: Remove duplicate dg-do directive and add c++17 effective target. 2020-07-31 Jonathan Wakely * src/c++17/floating_from_chars.cc (from_chars_impl): Use LC_ALL_MASK not LC_ALL. 2020-07-31 Richard Biener PR debug/96383 * testsuite/20_util/assume_aligned/3.cc: Use -g0. 2020-07-30 Jonathan Wakely * include/bits/basic_string.h (size_type, difference_type): Use allocator_traits to obtain the allocator's size_type and difference_type. 2020-07-30 Jonathan Wakely PR libstdc++/96279 * src/c++17/floating_from_chars.cc (from_chars_impl): Use isinf unqualified. [!_GLIBCXX_USE_C99_STDLIB]: Use strtod for float and long double. 2020-07-30 Jonathan Wakely * testsuite/23_containers/unordered_multiset/cons/noexcept_default_construct.cc: Use allocator with the correct value type. * testsuite/23_containers/unordered_set/cons/noexcept_default_construct.cc: Likewise. 2020-07-30 Jonathan Wakely * testsuite/20_util/from_chars/4.cc: Pass non-const iterator to string::insert. 2020-07-30 Jonathan Wakely * include/bits/iterator_concepts.h (__detail::__cv_bool): New helper concept. (__detail::__integral_nonbool): Likewise. (__detail::__is_integer_like): Use __integral_nonbool. * testsuite/std/ranges/access/lwg3467.cc: New test. 2020-07-30 Jonathan Wakely * testsuite/20_util/from_chars/4.cc: Use dg-add-options ieee. * testsuite/29_atomics/atomic_float/1.cc: Likewise. 2020-07-30 Jonathan Wakely * testsuite/23_containers/vector/bool/72847.cc: Use the exceptions_enabled effective-target keyword instead of checking for an explicit -fno-exceptions option. * testsuite/util/testsuite_abi.cc (examine_symbol): Remove redundant try-catch. * testsuite/util/testsuite_allocator.h [!__cpp_exceptions]: Do not define check_allocate_max_size and memory_resource. * testsuite/util/testsuite_containers.h: Replace comment with #error if wrong standard dialect used. * testsuite/util/testsuite_shared.cc: Likewise. 2020-07-29 François Dumont * include/bits/hashtable_policy.h (_Node_iterator_base()): New. (operator==(const _Node_iterator_base&, const _Node_iterator_base&)): Make hidden friend. (operator!=(const _Node_iterator_base&, const _Node_iterator_base&)): Make hidden friend. (_Local_iterator_base<>): Inherits _Node_iterator_base. (_Local_iterator_base<>::_M_cur): Remove. (_Local_iterator_base<>::_M_curr()): Remove. (operator==(const _Local_iterator_base&, const _Local_iterator_base&)): Remove. (operator!=(const _Local_iterator_base&, const _Local_iterator_base&)): Remove. * include/debug/unordered_map (unordered_map<>::_M_invalidate): Adapt. (unordered_multimap<>::_M_invalidate): Adapt. * include/debug/unordered_set (unordered_set<>::_M_invalidate): Adapt. (unordered_multiset<>::_M_invalidate): Adapt. 2020-07-29 David Edelsohn Jonathan Wakely Rainer Orth * testsuite/lib/dg-options.exp (add_options_for_libatomic): Add target powerpc-ibm-aix* and powerpc*-*-darwin*. * testsuite/29_atomics/atomic_float/value_init.cc: Add options for libatomic. 2020-07-29 François Dumont * include/bits/hashtable.h (_Hashtable(_Hashtable&& __ht, __node_alloc_type&& __a, true_type)): Add noexcept qualification. (_Hashtable(_Hashtable&&)): Fix noexcept qualification. (_Hashtable(_Hashtable&&, const allocator_type&)): Add noexcept qualification. * include/bits/unordered_map.h (unordered_map(unordered_map&&, const allocator_type&)): Add noexcept qualification. (unordered_multimap(unordered_multimap&&, const allocator_type&)): Likewise. * include/bits/unordered_set.h (unordered_set(unordered_set&&, const allocator_type&)): Likewise. (unordered_multiset(unordered_multiset&&, const allocator_type&)): Likewise. * include/debug/unordered_map (unordered_map(unordered_map&&, const allocator_type&)): Likewise. (unordered_multimap(unordered_multimap&&, const allocator_type&)): Likewise. * include/debug/unordered_set (unordered_set(unordered_set&&, const allocator_type&)): Likewise. (unordered_multiset(unordered_multiset&&, const allocator_type&)): Likewise. * testsuite/23_containers/unordered_map/allocator/default_init.cc: New test. * testsuite/23_containers/unordered_map/cons/noexcept_default_construct.cc: New test. * testsuite/23_containers/unordered_map/cons/noexcept_move_construct.cc: New test. * testsuite/23_containers/unordered_map/modifiers/move_assign.cc: New test. * testsuite/23_containers/unordered_multimap/cons/noexcept_default_construct.cc: New test. * testsuite/23_containers/unordered_multimap/cons/noexcept_move_construct.cc: New test. * testsuite/23_containers/unordered_multiset/cons/noexcept_default_construct.cc: New test. * testsuite/23_containers/unordered_multiset/cons/noexcept_move_construct.cc: New test. * testsuite/23_containers/unordered_set/allocator/default_init.cc: New test. * testsuite/23_containers/unordered_set/cons/noexcept_default_construct.cc: New test. * testsuite/23_containers/unordered_set/cons/noexcept_move_construct.cc: New test. 2020-07-28 François Dumont * include/bits/hashtable.h (_Hashtable<>(_InputIterator, _InputIterator, size_t, const _H1&, const _H2&, const _Hash&, const _Equal&, const _ExtractKey&, const allocator_type&, true_type)): New. (_Hashtable<>(_InputIterator, _InputIterator, size_t, const _H1&, const _H2&, const _Hash&, const _Equal&, const _ExtractKey&, const allocator_type&, false_type)): New. (_Hashtable<>(_InputIterator, _InputIterator, size_t, const _H1&, const _H2&, const _Hash&, const _Equal&, const _ExtractKey&, const allocator_type&)): Delegate to latters. (operator=(initializer_list)): Rehash if too small. (_M_insert(_Arg&&, const _NodeGenerator&, true_type)): Remove size_t len parameter. * include/bits/hashtable_policy.h (_Insert_base<>::_M_insert_range): Do not try to get input range distance. * testsuite/23_containers/unordered_set/cons/bucket_hint.cc: New test. * testsuite/23_containers/unordered_set/modifiers/insert.cc: New test. 2020-07-27 François Dumont * include/bits/hashtable_policy.h (_Map_base<>::at): Use _Hashtable<>::find. (_Hashtable_base<>::_Equal_hash_code<>::_S_node_equals):New. (_Hashtable_base<>::_M_node_equals): New, use latter. (_Equality<_Key, _Value, _Alloc, _ExtractKey, _Equal, _H1, _H2, _Hash, _RehashPolicy, false>::_M_equal): Adapt to use latter. * include/bits/hashtable.h (_Hashtable<>::_M_update_bbegin): New. (_Hashtable<>::_M_assign): Use latter. (_Hashtable<>::_M_move_assign): Likewise. (_Hashtable<>(_Hashtable<>&&)): Likewise. (_Hashtable<>(_Hashtable<>&&, const allocator_type&)): Likewise. (_Hashtable<>::swap): Likewise. (_Hashtable<>::find): Build iterator directly from _M_find_node result. (_Hashtable<>::count): Use _Hashtable<>::find. (_Hashtable<>::equal_range): Likewise. (_Hashtable<>::_M_erase(false_type, const key_type&)): Use _M_node_equals. 2020-07-27 Jonathan Wakely * src/c++17/floating_from_chars.cc (from_chars_impl): Ensure that FE_NEAREST is used. * testsuite/20_util/from_chars/4.cc: Do not use if constexpr in a { target c++14 } test. [!_GLIBCXX_HAVE_USELOCALE]: Disable all tests. * testsuite/20_util/from_chars/5.cc [!_GLIBCXX_HAVE_USELOCALE]: Likewise. * testsuite/20_util/from_chars/6.cc: New test. 2020-07-22 Jonathan Wakely * include/std/future (future, shared_future, promise): Add static assertions to the primary template to reject array and function types. * testsuite/30_threads/future/requirements/lwg3458.cc: New test. * testsuite/30_threads/promise/requirements/lwg3466.cc: New test. * testsuite/30_threads/shared_future/requirements/lwg3458.cc: New test. 2020-07-22 Jonathan Wakely * include/bits/stl_iterator.h (reverse_iterator): Constrain converting constructor and converting assignment operator. Access source iterator's data member directly instead of calling base(). (move_iterator): Likewise. * testsuite/24_iterators/move_iterator/dr3435.cc: New test. * testsuite/24_iterators/reverse_iterator/dr3435.cc: New test. 2020-07-20 Jonathan Wakely * acinclude.m4 (libtool_VERSION): Bump version. * config.h.in: Regenerate. * config/abi/pre/gnu.ver: Add GLIBCXX_3.4.29 version and new exports. * config/os/gnu-linux/ldbl-extra.ver: Add _GLIBCXX_LDBL_3.4.29 version and new export. * configure: Regenerate. * configure.ac: Check for and uselocale. * crossconfig.m4: Add macro or checks for uselocale. * include/std/charconv (from_chars): Declare overloads for float, double, and long double. * src/c++17/Makefile.am: Add new file. * src/c++17/Makefile.in: Regenerate. * src/c++17/floating_from_chars.cc: New file. (from_chars): Define for float, double, and long double. * testsuite/20_util/from_chars/1_c++20_neg.cc: Prune extra diagnostics caused by new overloads. * testsuite/20_util/from_chars/1_neg.cc: Likewise. * testsuite/20_util/from_chars/2.cc: Check leading '+'. * testsuite/20_util/from_chars/4.cc: New test. * testsuite/20_util/from_chars/5.cc: New test. * testsuite/util/testsuite_abi.cc: Add new symbol versions. 2020-07-20 Jonathan Wakely * include/bits/istream.tcc (basic_istream::get(__streambuf_type&, char_type): Use unsigned long long for counter and check if it would overflow _M_gcount. * testsuite/27_io/basic_istream/get/char/lwg3464.cc: New test. * testsuite/27_io/basic_istream/get/wchar_t/lwg3464.cc: New test. 2020-07-17 Iain Sandoe * include/std/coroutine: Mark the methods of the trivial awaitables as constexpr. 2020-07-14 David Edelsohn * config/os/aix/t-aix: Set BITS from compiler cpp macro. 2020-07-13 Jonathan Wakely PR libstdc++/94749 PR libstdc++/96161 * include/bits/istream.tcc (basic_istream::ignore(streamsize)) [n == max]: Check overflow conditions on _M_gcount. Rely on the fact that either EOF or the delimiter was reached. [n < max]: Check _M_gcount < n before checking for EOF or delimiter. (basic_istream::ignore(streamsize, char_type): Likewise. * src/c++98/compatibility.cc (istream::ignore(streamsize)) (wistream::ignore(streamsize)): Likewise. * src/c++98/istream.cc (istream::ignore(streamsize, char_type)) (wistream::ignore(streamsize, char_type)): Likewise. * testsuite/27_io/basic_istream/ignore/char/94749.cc: Check that delimiter is discarded if the number of characters ignored doesn't fit in streamsize. * testsuite/27_io/basic_istream/ignore/wchar_t/94749.cc: Likewise. * testsuite/27_io/basic_istream/ignore/char/96161.cc: New test. * testsuite/27_io/basic_istream/ignore/wchar_t/96161.cc: New test. 2020-07-08 François Dumont * include/bits/stl_tree.h (_Rb_tree_impl(_Rb_tree_impl&&)): Add noexcept qualification based only on _Compare one. * testsuite/23_containers/map/cons/noexcept_move_construct.cc: Add static asserts. * testsuite/23_containers/multimap/cons/noexcept_move_construct.cc: Likewise. * testsuite/23_containers/multiset/cons/noexcept_move_construct.cc: Likewise. * testsuite/23_containers/set/cons/noexcept_move_construct.cc: Likewise. 2020-07-07 Jonathan Wakely * include/std/limits: Whitespace changes. 2020-07-07 Jonathan Wakely * include/Makefile.am: Remove bits/int_limits.h. * include/Makefile.in: Regenerate. * include/bits/int_limits.h: Removed. * include/bits/parse_numbers.h (_Select_int_base): Replace __int_limits with __int_traits. * include/bits/range_access.h (_SSize::operator()): Likewise. * include/ext/numeric_traits.h (__numeric_traits_integer): Add static assertion. (__int_traits): New alias template. * include/std/bit (__rotl, __rotr, __countl_zero, __countl_one) (__countr_zero, __countr_one, __popcount, __bit_ceil) (__bit_floor, __bit_width) Replace __int_limits with __int_traits. * include/std/charconv (__to_chars_8, __from_chars_binary) (__from_chars_alpha_to_num, from_chars): Likewise. * include/std/memory_resource (polymorphic_allocator::allocate) (polymorphic_allocator::allocate_object): Likewise. * include/std/string_view (basic_string_view::_S_compare): Likewise. * include/std/utility (cmp_equal, cmp_less, in_range): Likewise. 2020-07-07 Jonathan Wakely * include/std/limits: Whitespace changes. 2020-07-06 Jonathan Wakely * include/std/optional (_Optional_payload_base, _Optional_base) (optional, __optional_hash_call_base): Adjust whitespace and other formatting. Remove redundant && tokens on template arguments to type traits. 2020-07-06 Jonathan Wakely * include/std/optional (make_optional): Add enable_if constraints and noexcept-specifier to each overload. * testsuite/20_util/optional/make_optional-2.cc: New test. 2020-07-06 Jonathan Wakely PR libstdc++/96036 * include/std/optional (optional): Add noexcept-specifier to every constructor, assignment operator, emplace function and dereference operator. * testsuite/20_util/optional/assignment/noexcept.cc: New test. * testsuite/20_util/optional/cons/noexcept.cc: New test. 2020-07-06 Jonathan Wakely PR libstdc++/96063 * include/bits/fs_dir.h: Use consistent tag in class-head. * include/bits/localefwd.h: Likewise. * include/bits/regex.h: Likewise. * include/bits/stl_map.h: Likewise. * include/bits/stl_multimap.h: Likewise. * include/bits/stl_multiset.h: Likewise. * include/bits/stl_set.h: Likewise. * include/std/complex: Likewise. * include/std/functional: Likewise. * include/std/future: Likewise. * include/std/system_error: Likewise. * include/std/thread: Likewise. * include/std/tuple: Likewise. * include/std/type_traits: Likewise. * include/std/valarray: Likewise. 2020-07-02 Jonathan Wakely * testsuite/27_io/basic_ios/conv/voidptr.cc: Add c++98_only target selector. 2020-07-02 Jonathan Wakely * testsuite/18_support/headers/cstdalign/std_c++0x_neg.cc: Add c++98_only target selector. * testsuite/18_support/headers/cstdbool/std_c++0x_neg.cc: Likewise. * testsuite/18_support/headers/cstdint/std_c++0x_neg.cc: Likewise. * testsuite/18_support/headers/new/synopsis_cxx98.cc: Likewise. * testsuite/19_diagnostics/headers/system_error/std_c++0x_neg.cc: Likewise. * testsuite/20_util/headers/type_traits/std_c++0x_neg.cc: Likewise. * testsuite/23_containers/headers/array/std_c++0x_neg.cc: Likewise. * testsuite/23_containers/headers/tuple/std_c++0x_neg.cc: Likewise. * testsuite/23_containers/headers/unordered_map/std_c++0x_neg.cc: Likewise. * testsuite/23_containers/headers/unordered_set/std_c++0x_neg.cc: Likewise. * testsuite/26_numerics/headers/ccomplex/std_c++0x_neg.cc: Likewise. * testsuite/26_numerics/headers/cfenv/std_c++0x_neg.cc: Likewise. * testsuite/26_numerics/headers/cmath/c99_classification_macros_c++98.cc: Likewise. * testsuite/26_numerics/headers/ctgmath/std_c++0x_neg.cc: Likewise. * testsuite/26_numerics/headers/random/std_c++0x_neg.cc: Likewise. * testsuite/27_io/headers/cinttypes/std_c++0x_neg.cc: Likewise. * testsuite/28_regex/headers/regex/std_c++0x_neg.cc: Likewise. * testsuite/29_atomics/headers/atomic/std_c++0x_neg.cc: Likewise. * testsuite/30_threads/headers/condition_variable/std_c++0x_neg.cc: Likewise. * testsuite/30_threads/headers/future/std_c++0x_neg.cc: Likewise. * testsuite/30_threads/headers/mutex/std_c++0x_neg.cc: Likewise. * testsuite/30_threads/headers/thread/std_c++0x_neg.cc: Likewise. 2020-07-02 Ville Voutilainen PR libstdc++/91807 * include/std/variant (_Copy_assign_base::operator=(const _Copy_assign_base&): Do the move-assignment from a temporary so that the temporary is constructed with an explicit index. * testsuite/20_util/variant/91807.cc: New. 2020-07-02 Jonathan Wakely PR libstdc++/91153 PR target/93224 * testsuite/29_atomics/atomic_float/1.cc: Use different values for tests. * testsuite/29_atomics/atomic_ref/float.cc: Likewise. 2020-07-01 Jonathan Wakely PR libstdc++/94627 * include/bits/regex.h (operator==, operator!=): Remove noexcept equality comparisons for match_results. * testsuite/28_regex/match_results/94627.cc: New test. 2020-07-01 Martin Sebor * testsuite/21_strings/basic_string_view/cons/char/nonnull.cc: Adjust text of expected warning. * testsuite/21_strings/basic_string_view/cons/wchar_t/nonnull.cc: Same. * testsuite/21_strings/basic_string_view/operations/compare/char/nonnull.cc: Same. * testsuite/21_strings/basic_string_view/operations/find/char/nonnull.cc: Same. * testsuite/21_strings/basic_string_view/operations/rfind/char/nonnull.cc: Same. 2020-06-29 Ville Voutilainen Revert: 2020-06-28 Ville Voutilainen * include/bits/basic_string.h (string(_CharT*, const _Alloc&)): Add a __nonnull__ attribute. * testsuite/21_strings/basic_string/cons/char/nonnull.cc: New. * testsuite/21_strings/basic_string/cons/wchar_t/nonnull.cc: Likewise. 2020-06-28 Ville Voutilainen * include/bits/basic_string.h (string(_CharT*, const _Alloc&)): Add a __nonnull__ attribute. * testsuite/21_strings/basic_string/cons/char/nonnull.cc: New. * testsuite/21_strings/basic_string/cons/wchar_t/nonnull.cc: Likewise. 2020-06-28 Ville Voutilainen PR libstdc++/95915 * include/std/type_traits (is_literal_type, is_literal_type_v): Deprecate in C++17. * include/std/variant (_Uninitialized): Adjust the condition and the comment. * testsuite/20_util/is_literal_type/deprecated-1z.cc: New. * testsuite/20_util/is_literal_type/requirements/explicit_instantiation.cc: Adjust. * testsuite/20_util/is_literal_type/requirements/typedefs.cc: Likewise. * testsuite/20_util/is_literal_type/value.cc: Likewise. * testsuite/20_util/optional/constexpr/nullopt.cc: Use __is_literal_type directly. * testsuite/20_util/optional/nullopt.cc: Likewise. * testsuite/20_util/variable_templates_for_traits.cc: Adjust. * testsuite/20_util/variant/95915.cc: New. * testsuite/20_util/variant/compile.cc: Add new test. * testsuite/experimental/optional/constexpr/nullopt.cc: Use __is_literal_type directly. * testsuite/experimental/optional/nullopt.cc: Likewise. * testsuite/experimental/type_traits/value.cc: Adjust. * testsuite/util/testsuite_common_types.h: Use __is_literal_type directly. 2020-06-24 Jonathan Wakely * include/std/charconv (__from_chars_binary): Ignore leading zeros. * testsuite/20_util/from_chars/1.cc: Check "0x1" for all bases, not just 10 and 16. * testsuite/20_util/from_chars/3.cc: New test. 2020-06-24 Jonathan Wakely * include/bits/stl_algobase.h (__find_if): Add FALLTHRU markers. * include/std/charconv (__detail::__to_chars): Avoid -Wsign-compare warning. 2020-06-24 Jonathan Wakely PR libstdc++/95851 * include/std/charconv (__to_chars_i): Check for zero-sized buffer unconditionally. * testsuite/20_util/to_chars/95851.cc: New test. 2020-06-23 Jonathan Wakely * testsuite/20_util/from_chars/1_c++20_neg.cc: Check enumeration type. * testsuite/20_util/from_chars/1_neg.cc: Likewise. Move dg-error directives outside preprocessor condition. 2020-06-23 Jonathan Wakely PR libstdc++/95832 * include/std/variant (__detail::__variant::_Build_FUN): Remove partial specialization to prevent narrowing conversions to bool. * testsuite/20_util/variant/compile.cc: Test non-narrowing conversions to bool. * testsuite/20_util/variant/run.cc: Likewise. 2020-06-23 Jonathan Wakely * doc/Makefile.in: Regenerate. * include/Makefile.in: Regenerate. * libsupc++/Makefile.in: Regenerate. * po/Makefile.in: Regenerate. * python/Makefile.in: Regenerate. * src/Makefile.in: Regenerate. * src/c++11/Makefile.in: Regenerate. * src/c++17/Makefile.in: Regenerate. * src/c++98/Makefile.in: Regenerate. * src/filesystem/Makefile.in: Regenerate. * testsuite/Makefile.in: Regenerate. 2020-06-22 David Edelsohn * Makefile.am: Use -include. * Makefile.in: Regenerate. 2020-06-21 David Edelsohn * Makefile.am (tmake_file): Build and install AIX-style FAT libraries. * Makefile.in: Regenerate. * configure.ac (tmake_file): Substitute. * configure: Regenerate. * configure.host (aix*): Define tmake_file. * config/os/aix/t-aix: New file. 2020-06-20 Jason Merrill * testsuite/24_iterators/move_iterator/rel_ops_c++20.cc: Remove greedy_ops tests. * testsuite/24_iterators/reverse_iterator/rel_ops_c++20.cc: Remove greedy_ops tests. 2020-06-19 Jonathan Wakely PR libstdc++/95765 * include/bits/stl_algobase.h (__size_to_integer(float)) (__size_to_integer(double), __size_to_integer(long double)) (__size_to_integer(__float128)): Cast return type explicitly. * include/bits/stl_uninitialized.h (__uninitialized_default_1): Remove unused typedef. 2020-06-19 Jonathan Wakely * include/bits/stl_pair.h (_Index_tuple): Remove redundant namespace qualification. (pair::pair(tuple<>&, tuple<>&, _Index_tuple, _Index_tuple)): Likewise. * include/std/tuple (_Head_base, _Tuple_impl, tuple_size) (tuple_element, __get_helper, get, __make_tuple_impl) (__make_1st_indices, __tuple_concater) (pair::pair(tuple<>&, tuple<>&, _Index_tuple, _Index_tuple)): Likewise. * include/std/utility (tuple_element, __is_tuple_like_impl) (tuple_size, __pair_get, get): Likewise. 2020-06-19 Jonathan Wakely * include/bits/std_function.h (function): Define all member functions inline. 2020-06-19 Marc Glisse * include/bits/stl_algo.h (__includes): Simplify the code. 2020-06-19 Marc Glisse * include/std/optional (optional()): Explicitly define it. 2020-06-17 Jonathan Wakely PR libstdc++/94540 * include/bits/stl_uninitialized.h (__uninitialized_default_1): Construct the first value at *__first instead of on the stack. (__uninitialized_default_n_1): Likewise. Improve comments on several of the non-standard algorithms. * testsuite/20_util/specialized_algorithms/uninitialized_default/94540.cc: New test. * testsuite/20_util/specialized_algorithms/uninitialized_default_n/94540.cc: New test. * testsuite/20_util/specialized_algorithms/uninitialized_value_construct/94540.cc: New test. * testsuite/20_util/specialized_algorithms/uninitialized_value_construct_n/94540.cc: New test. * testsuite/23_containers/vector/cons/94540.cc: New test. 2020-06-17 Jonathan Wakely * testsuite/20_util/specialized_algorithms/uninitialized_default_n/sizes.cc: Replace Value type with int so trivial code path is used. * testsuite/20_util/specialized_algorithms/uninitialized_value_construct_n/sizes.cc: Likewise. 2020-06-17 Jonathan Wakely * include/bits/stl_uninitialized.h (uninitialized_fill_n): Only use std::fill_n when the size is an integral type. (__uninitialized_default_n): Likewise. * testsuite/20_util/specialized_algorithms/uninitialized_default_n/sizes.cc: New test. * testsuite/20_util/specialized_algorithms/uninitialized_fill_n/sizes.cc: New test. * testsuite/20_util/specialized_algorithms/uninitialized_value_construct_n/sizes.cc: New test. 2020-06-16 Jonathan Wakely PR libstdc++/95282 * include/bits/atomic_base.h (__atomic_impl::load): Use the _Val alias instead of deducing _Tp as an unqualified type. (__atomic_impl::exchange): Use the _Val alias to remove volatile from the reinterpret_cast result type. 2020-06-16 Jonathan Wakely * include/std/atomic (atomic): Add static assertions. * testsuite/29_atomics/atomic/requirements/types_neg.cc: New test. 2020-06-16 Patrick Palka PR libstdc++/94003 * testsuite/20_util/is_constructible/94003.cc: New test. 2020-06-15 Jonathan Wakely * include/bits/char_traits.h (__cpp_lib_constexpr_char_traits): Update value for C++20. * include/std/version (__cpp_lib_constexpr_char_traits): Likewise. * testsuite/21_strings/char_traits/requirements/constexpr_functions_c++17.cc: Update expected value. * testsuite/21_strings/char_traits/requirements/constexpr_functions_c++20.cc: Likewise. 2020-06-15 Paul Keir * include/bits/char_traits.h (char_traits::move): constexpr move with overlap was using copy_backward incorrectly. * testsuite/21_strings/char_traits/requirements/constexpr_functions_c++20.cc: New test. 2020-06-12 Jonathan Wakely * testsuite/29_atomics/atomic_flag/clear/1.cc: Also test clear() when the value is currently set. * testsuite/29_atomics/atomic_flag/test_and_set/explicit.cc: Actually check the return value. * testsuite/29_atomics/atomic_flag/test_and_set/implicit.cc: Likewise. 2020-06-12 Jonathan Wakely * include/bits/atomic_base.h (atomic_flag::test): Add missing const qualifiers. * testsuite/29_atomics/atomic_flag/test/explicit.cc: Add dg-options and verify results of test function. * testsuite/29_atomics/atomic_flag/test/implicit.cc: Likewise. 2020-06-11 Jonathan Wakely PR libstdc++/94749 * include/bits/istream.tcc (basic_istream::ignore(streamsize, CharT)): Only discard an extra character if we didn't already reach the maximum number. * src/c++98/istream.cc (istream::ignore(streamsiz, char)) (wistream::ignore(streamsize, wchar_t)): Likewise. * testsuite/27_io/basic_istream/ignore/char/94749.cc: New test. * testsuite/27_io/basic_istream/ignore/wchar_t/94749.cc: New test. 2020-06-10 Patrick Palka PR libstdc++/95578 * include/bits/ranges_algo.h (__lexicographical_compare_fn): Also check that the iterator and sentinel have the same type before applying the unwrapping optimization for __normal_iterator. Split the check into two, one for the first iterator/sentinel pair and another for second iterator/sentinel pair. Remove uses of __niter_base, and remove uses of std::move on a __normal_iterator. * include/bits/ranges_algobase.h (__equal_fn): Likewise. (__copy_or_move): Likewise. Perform similar adjustments for the reverse_iterator and move_iterator optimizations. Inline the checks into the if-constexprs, and use using-declarations to make them less visually noisy. Remove uses of __niter_wrap. (__copy_or_move_backward): Likewise. * testsuite/25_algorithms/copy/95578.cc: New test. * testsuite/25_algorithms/copy_backward/95578.cc: New test. * testsuite/25_algorithms/equal/95578.cc: New test. * testsuite/25_algorithms/lexicographical_compare/95578.cc: New test. * testsuite/25_algorithms/move/95578.cc: New test. * testsuite/25_algorithms/move_backward/95578.cc: New test. 2020-06-10 François Dumont Jonathan Wakely * include/bits/deque.tcc (__lex_cmp_dit): New. (__lexicographical_compare_aux1): Define overloads for deque iterators. * include/bits/stl_algobase.h (__lexicographical_compare::__3way): New static member function. (__lexicographical_compare::__3way): Likewise. (__lexicographical_compare::__lc): Use __3way. (__lexicographical_compare_aux): Rename to __lexicographical_compare_aux1 and declare overloads for deque iterators. (__lexicographical_compare_aux): Define new forwarding function that calls __lexicographical_compare_aux1 and declare new overloads for safe iterators. (lexicographical_compare): Do not use __niter_base on parameters. * include/debug/safe_iterator.tcc (__lexicographical_compare_aux): Define overloads for safe iterators. * testsuite/25_algorithms/lexicographical_compare/1.cc: Add checks with random access iterators. * testsuite/25_algorithms/lexicographical_compare/deque_iterators/1.cc: New test. 2020-06-09 Jonathan Wakely * include/bits/stl_iterator.h (move_iterator::operator=): Define. * testsuite/24_iterators/move_iterator/dr3265.cc: New test. 2020-06-09 Jonathan Wakely * include/std/optional (bad_optional_access): Define default constructor and destructor as defaulted. * testsuite/20_util/optional/bad_access.cc: New test. 2020-06-08 Jonathan Wakely * testsuite/20_util/default_delete/48631_neg.cc: Adjust dg-error line number. * testsuite/20_util/default_delete/void_neg.cc: Likewise. 2020-06-08 Jonathan Wakely * include/bits/unique_ptr.h (operator<<): Define for C++20. * testsuite/20_util/unique_ptr/io/lwg2948.cc: New test. 2020-06-04 Jonathan Wakely * include/bits/iterator_concepts.h (__detail::__ptr, __detail::__ref) (__detail::__cat, __detail::__diff): Move to class scope in the relevant __iterator_traits specializations. (__iterator_traits<>): Use nested class templates instead of ones from namespace __detail. * include/bits/stl_iterator.h (__detail::__common_iter_ptr): Move to class scope in iterator_traits>. (iterator_traits>): Use nested class template instead of __detail::__common_iter_ptr. 2020-06-04 François Dumont * include/bits/stl_algo.h (__copy_n_a): Move to ... * include/bits/stl_algobase.h (__copy_n_a): ...here. Add __strict parameter. (__copy_n_a(istreambuf_iterator<>, _Size, _Deque_iterator<>, bool)): Declare. (__niter_base(const _Safe_iterator<_Ite, _Seq, random_access_iterator_tag>&)): Declare. (__copy_move_a2(istreambuf_iterator<>, istreambuf_iterator<>, _Deque_iterator<>)): Declare. * include/bits/deque.tcc (__copy_move_a2(istreambuf_iterator<>, istreambuf_iterator<>, _Deque_iterator<>)): New. (__copy_n_a(istreambuf_iterator<>, _Size, _Deque_iterator<>, bool)): New. * include/bits/streambuf_iterator.h (__copy_n_a(istreambuf_iterator<>, _Size, _CharT*, bool)): Adapt. * include/debug/safe_iterator.tcc (__niter_base): New. * testsuite/25_algorithms/copy/streambuf_iterators/char/4.cc (test03): New. * testsuite/25_algorithms/copy/streambuf_iterators/char/debug/deque_neg.cc: New test. * testsuite/25_algorithms/copy_n/debug/istreambuf_ite_deque_neg.cc: New test. * testsuite/25_algorithms/copy_n/istreambuf_iterator/2.cc: New test. * testsuite/25_algorithms/copy_n/istreambuf_iterator/deque.cc: New test. 2020-06-04 Jonathan Wakely * include/bits/ranges_algobase.h (__copy_n_fn): Only call ranges::copy for positive values. * include/bits/stl_algo.h (copy_n): Convert Size argument to an integral type and only call __copy_n for positive values. * testsuite/util/testsuite_iterators.h (random_access_iterator_wrapper::operator+=): Fix range check for negative values. (output_container, input_container, forward_container) (bidirectional_container, random_access_container): New alias templates. * testsuite/25_algorithms/copy_n/5.cc: New test. 2020-06-02 Jonathan Wakely PR libstdc++/90102 * include/debug/deque (deque(const _Base&)): Replace parameter with a struct that wraps a const _Base&. * include/debug/forward_list (forward_list(_Base_ref)): New constructor. * include/debug/list (list(const _Base&)): Replace parameter with a struct that wraps a const _Base&. * include/debug/map.h (map(const _Base&)): Likewise. * include/debug/multimap.h (multimap(const _Base&)): Likewise. * include/debug/multiset.h (multiset(const _Base&)): Likewise. * include/debug/set.h (set(const _Base&)): Likewise. * include/debug/unordered_map (unordered_map(const _Base&)) (unordered_multimap(const _Base&)): Likewise. * include/debug/unordered_set (unordered_set(const _Base&)) (unordered_multiset(const _Base&)): Likewise. * testsuite/23_containers/vector/cons/destructible_debug_neg.cc: Adjust dg-error line number. * include/debug/vector (vector(const _Base&)): Likewise. * testsuite/23_containers/deque/debug/90102.cc: New test. * testsuite/23_containers/forward_list/debug/90102.cc: New test. * testsuite/23_containers/list/debug/90102.cc: New test. * testsuite/23_containers/map/debug/90102.cc: New test. * testsuite/23_containers/multimap/debug/90102.cc: New test. * testsuite/23_containers/multiset/debug/90102.cc: New test. * testsuite/23_containers/set/debug/90102.cc: New test. * testsuite/23_containers/unordered_map/debug/90102.cc: New test. * testsuite/23_containers/unordered_multimap/debug/90102.cc: New test. * testsuite/23_containers/unordered_multiset/debug/90102.cc: New test. * testsuite/23_containers/unordered_set/debug/90102.cc: New test. * testsuite/23_containers/vector/debug/90102.cc: New test. 2020-06-01 Jonathan Wakely PR libstdc++/95392 * include/bits/fs_path.h (path::_S_to_string): Move to namespace-scope and rename to ... (__detail::__string_from_range): ... this. [WINDOWS] (__detail::__wstr_from_utf8): New function template to convert a char sequence containing UTF-8 to wstring. (path::_S_convert(Iter, Iter)): Adjust call to _S_to_string. (path::_S_convert_loc(Iter, Iter, const locale&)): Likewise. (u8path(InputIterator, InputIterator)) [WINDOWS]: Use __string_from_range to obtain a contiguous range and __wstr_from_utf8 to obtain a wide string. (u8path(const Source&)) [WINDOWS]: Use __effective_range to obtain a contiguous range and __wstr_from_utf8 to obtain a wide string. (path::_S_convert(const _EcharT*, const _EcharT)) [WINDOWS]: Use __wstr_from_utf8. 2020-06-01 Jonathan Wakely * testsuite/util/testsuite_iterators.h: (input_iterator_wrapper::operator++(int)): Return proxy object. 2020-06-01 Jonathan Wakely * doc/xml/manual/evolution.xml: Document deprecation of __is_nullptr_t and removal of std::allocator members. * doc/html/manual/api.html: Regenerate. 2020-06-01 Jonathan Wakely * doc/xml/manual/containers.xml: Replace with . * doc/xml/manual/evolution.xml: Likewise. * doc/html/manual/api.html: Regenerate. * doc/html/manual/containers.html: Regenerate. 2020-06-01 Gerald Pfeifer * doc/xml/faq.xml: Adjust Valgrind reference and remove another. * doc/html/faq.html: Regenerate. 2020-06-01 Gerald Pfeifer * doc/xml/manual/policy_data_structures_biblio.xml: Remove stray change. 2020-06-01 Gerald Pfeifer * doc/xml/manual/policy_data_structures_biblio.xml: Switch www.cs.princeton.edu to https. * doc/html/manual/policy_data_structures.html: Regenerate. 2020-05-31 Douglas B Rupp * crossconfig.m4 (<*-vxworks>): Check for more math decls. * configure: Rebuild. 2020-05-29 H.J. Lu PR bootstrap/95413 * configure: Regenerated. 2020-05-29 François Dumont PR libstdc++/95079 * include/bits/hashtable_policy.h (_Insert_base<>::try_emplace): New. * include/bits/unordered_map.h (unordered_map<>::try_emplace): Adapt. (unordered_map<>::insert_or_assign): Adapt. 2020-05-27 Jonathan Wakely PR libstdc++/95282 * include/bits/atomic_base.h (__atomic_impl::load): Add cv-qualifiers to parameter so that _Tp is deduced as the unqualified type. * testsuite/29_atomics/atomic_float/95282.cc: New test. 2020-05-27 Jonathan Wakely PR libstdc++/95322 * include/std/ranges (transform_view::_Sentinel): Allow hidden friends to work with _Iterator and _Iterator. (join_view::_Sentinel): Likewise. * testsuite/std/ranges/adaptors/95322.cc: New test. 2020-05-27 Jonathan Wakely PR libstdc++/94354 * include/bits/stl_iterator.h (reverse_iterator): Fix comparison operators to use the correct operations on the underlying iterators. * testsuite/24_iterators/reverse_iterator/rel_ops.cc: New test. 2020-05-27 Jonathan Wakely * testsuite/18_support/comparisons/categories/zero_neg.cc: New test. 2020-05-26 Patrick Palka PR libstdc++/95322 * include/bits/stl_iterator.h (__detail::_Common_iter_proxy): Remove and instead define it ... (common_iterator::_Proxy): ... here. (common_iterator::operator->): Use it. * testsuite/24_iterators/common_iterator/2.cc: New test. * testsuite/std/ranges/adaptors/95322.cc: New test. 2020-05-23 Patrick Palka PR libstdc++/93978 * testsuite/std/ranges/adaptors/93978.cc: Add -Wall to dg-additional-options. Avoid unused-but-set-variable warning. 2020-05-23 Jonathan Wakely PR libstdc++/95289 * include/debug/helper_functions.h (__get_distance): Only declare as a constexpr function for C++14 and up. * testsuite/25_algorithms/copy/debug/95289.cc: New test. * include/bits/fs_path.h (__detail::_S_range_begin) (__detail::_S_range_end, path::_S_string_from_iter): Replace with overloaded function template __detail::__effective_range. (__detail::__effective_range): New overloaded function template to create a basic_string or basic_string_view for an effective range. (__detail::__value_type_is_char): Use __detail::__effective_range. Do not use remove_const on value type. (__detail::__value_type_is_char_or_char8_t): Likewise. (path::path(const Source&, format)) (path::path(const Source&, const locale&)) (path::operator/=(const Source&), path::append(const Source&)) (path::concat(const Source&)): Use __detail::__effective_range. (path::_S_to_string(InputIterator, InputIterator)): New function template to create a string view if possible, or string otherwise. (path::_S_convert): Add overloads that convert a string returned by __detail::__effective_range. Use if-constexpr to inline conversion logic from all overloads of _Cvt::_S_convert. (path::_S_convert_loc): Add overload that converts a string. Use _S_to_string to avoid allocation when possible. (path::_Cvt): Remove. (path::operator+=(CharT)): Remove indirection through path::concat. * include/experimental/bits/fs_path.h (path::_S_convert_loc): Add overload for non-const pointers, to avoid constructing a std::string. * src/c++17/fs_path.cc (path::_S_convert_loc): Replace conditional compilation with call to _S_convert. * include/bits/fs_path.h (__detail::_S_range_begin) (__detail::_S_range_end): Remove unintentional static specifiers. * include/experimental/bits/fs_path.h (__detail::_S_range_begin) (__detail::_S_range_end): Likewise. * include/bits/fs_path.h (filesystem::__detail::__is_encoded_char): Replace alias template with variable template. Don't remove const. (filesystem::__detail::__is_path_src): Replace overloaded function template with variable template and specializations. (filesystem::__detail::__is_path_iter_src): Replace alias template with class template. (filesystem::__detail::_Path): Use __is_path_src. Remove support for iterator pairs. (filesystem::__detail::_Path2): New alias template for checking InputIterator requirements. (filesystem::__detail::__constructible_from): Remove. (filesystem::path): Replace _Path with _Path2. * testsuite/27_io/filesystem/path/construct/80762.cc: Check with two constructor arguments of void and void* types. 2020-05-21 Matthias Kretz * testsuite/Makefile.am: Remove dup target_triplet and set tool, allowing runtest to work without arguments. * testsuite/Makefile.in: Regenerate. 2020-05-21 Jonathan Wakely PR libstdc++/93983 * include/bits/iterator_concepts.h (__detail::__cpp17_iterator): Reorder constraints to avoid recursion when constructors use iterator_traits (LWG 3420). * testsuite/24_iterators/customization_points/lwg3420.cc: New test. * include/experimental/socket (basic_socket::is_open() (basic_socket_acceptor::is_open()): Use _GLIBCXX_NODISCARD macro. * include/experimental/bits/net.h (__endpoint, __protocol) (__acceptable_protocol, __inet_protocol): New concepts. (__detail::__is_endpoint): Move trait from . (__is_protocol, __is_acceptable_protocol, __is_inet_protocol): New traits. (__endpoint, __protocol, __acceptable_protocol): New variable templates. * include/experimental/socket (__is_endpoint): Move to net.h header. (basic_socket, basic_socket_acceptor): Check requirements. * include/experimental/executor (use_future_t::use_future_t()): Fix incorrect noexcept-specifier. * include/experimental/internet (basic_resolver_results): Adjust whitespace. * include/experimental/socket (__basic_socket_impl::release): Add member function. (basic_socket(io_context&, const endpoint_type&)): Fix argument to target constructor. (basic_socket::release(), basic_socket::release(error_code&)): Add missing member functions. (basic_socket::is_open()): Add nodiscard attribute. (basic_socket::close(error_code&)): Pass argument to base function. (basic_socket_acceptor::release()) (basic_socket_acceptor::release(error_code&)): Add missing member functions. (basic_socket_acceptor::is_open()): Add nodiscard attribute. (basic_socket_streambuf::error()): Add noexcept. (basic_socket_iostream::error()): Likewise. * testsuite/experimental/net/socket/basic_socket.cc: New test. * include/experimental/buffer: Replace typedefs with alias-declarations. * include/experimental/executor: Likewise. * include/experimental/internet: Likewise. * include/experimental/socket: Likewise. * include/experimental/timer: Likewise. 2020-05-19 Jonathan Wakely PR libstdc++/94087 * src/c++11/random.cc (__x86_rdseed): Allow fallback function to be passed in. (__x86_rdseed_rdrand): New function that uses rdseed with rdrand fallback. (random_device::_M_init): Use __x86_rdseed_rdrand when both instructions are available. * testsuite/26_numerics/random/random_device/94087.cc: New test. 2020-05-19 Patrick Palka PR c++/66439 * testsuite/20_util/pair/astuple/get_neg.cc: Prune "type/value mismatch" messages. * testsuite/20_util/tuple/element_access/get_neg.cc: Likewise. 2020-05-15 H.J. Lu PR bootstrap/95147 * configure: Regenerated. 2020-05-14 H.J. Lu * configure: Regenerated. 2020-05-13 Alexandre Oliva PR libstdc++/77691 * include/experimental/memory_resource (__resource_adaptor_imp::do_allocate): Handle max_align_t on x86-vxworks as on x86-solaris. (__resource_adaptor_imp::do_deallocate): Likewise. * testsuite/experimental/memory_resource/new_delete_resource.cc: Drop xfail. (BAD_MAX_ALIGN_T): Define on x86-vxworks as on x86-solaris. (test03): Drop max-align test for char-aligned alloc. 2020-05-08 Ulrich Drepper * include/bits/atomic_base.h (atomic_flag): Implement test member function. * include/std/version: Define __cpp_lib_atomic_flag_test. * testsuite/29_atomics/atomic_flag/test/explicit.cc: New file. * testsuite/29_atomics/atomic_flag/test/implicit.cc: New file. 2020-05-07 Jonathan Wakely PR libstdc++/94971 (partial) * include/bits/ranges_algo.h (ranges::__sample_fn): Qualify std::sample using macro to work in parallel mode. (__sort_fn): Likewise for std::sort. (ranges::__nth_element_fn): Likewise for std::nth_element. * include/bits/stl_algobase.h (lexicographical_compare_three_way): Likewise for std::__min_cmp. * include/parallel/algobase.h (lexicographical_compare_three_way): Add to namespace std::__parallel. PR c/92472 * include/parallel/multiway_merge.h (_GuardedIterator::operator*) (_GuardedIterator::operator _RAIter, _UnguardedIterator::operator*) (_UnguardedIterator::operator _RAIter): Add const qualifier. (operator<(_GuardedIterator&, _GuardedIterator&) (operator<=(_GuardedIterator&, _GuardedIterator&) (operator<(_UnguardedIterator&, _UnguardedIterator&) (operator<=(_UnguardedIterator&, _UnguardedIterator&): Change parameters to const references. 2020-05-07 Eric Botcazou * config/abi/post/sparc64-linux-gnu/baseline_symbols.txt: Update. * config/abi/post/sparc64-linux-gnu/32/baseline_symbols.txt: Likewise. 2020-05-06 François Dumont * include/bits/stl_algobase.h (struct _Bit_iterator): New declaration. (std::__fill_a1(_Bit_iterator, _Bit_iterator, const bool&)): Likewise. * include/bits/stl_bvector.h (__fill_bvector): Move outside _GLIBCXX_STD_C namespace. (fill(_Bit_iterator, _Bit_iterator, const bool&)): Likewise and rename into... (__fill_a1): ...this. * testsuite/25_algorithms/fill/bvector/1.cc: New. 2020-05-06 H.J. Lu * config/abi/post/x86_64-linux-gnu/x32/baseline_symbols.txt: Updated. 2020-05-06 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. 2020-05-06 Martin Liska Revert: 2020-05-05 Martin Liska PR c/92472 * include/parallel/multiway_merge.h: Use const for _Compare template argument. 2020-05-06 Jonathan Wakely * doc/xml/manual/abi.xml (abi.versioning.history): Document library versions for GCC 9.[123] and 10.1 releases. * doc/html/*: Regenerate. 2020-05-06 Jakub Jelinek * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update. * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update. * config/abi/post/i386-linux-gnu/baseline_symbols.txt: Update. * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update. * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update. * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update. * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update. 2020-05-05 Martin Liska PR c/92472 * include/parallel/multiway_merge.h: Use const for _Compare template argument. 2020-05-04 Fangrui Song * libsupc++/cxxabi.h (__cxa_finalize): Fix return type. 2020-05-04 Jonathan Wakely * doc/xml/faq.xml: Use working link for SGI STL FAQ. * doc/html/*: Regenerate. PR libstdc++/94906 * src/c++17/memory_resource.cc (monotonic_buffer_resource::_Chunk::release): Use size_t for shift operands. 2020-05-04 Nathan Sidwell PR libstdc++/94747 * libsupc++/dyncast.cc (__dynamic_cast): Cast offsetof to ptrdiff_t before negation, to show intent more clearly. 2020-05-04 Jonathan Wakely PR libstdc++/94936 * src/c++17/memory_resource.cc (synchronized_pool_resource::_TPools): Add comment about single-threaded behaviour. (synchronized_pool_resource::_TPools::move_nonempty_chunks()): Hoist class member access out of loop. (synchronized_pool_resource::synchronized_pool_resource()) (synchronized_pool_resource::~synchronized_pool_resource()) (synchronized_pool_resource::release()): Check __gthread_active_p before creating and/or deleting the thread-specific data key. (synchronized_pool_resource::_M_thread_specific_pools()): Adjust assertions. (synchronized_pool_resource::do_allocate(size_t, size_t)): Add fast path for single-threaded case. (synchronized_pool_resource::do_deallocate(void*, size_t, size_t)): Likewise. Return if unable to find a pool that owns the allocation. * testsuite/20_util/synchronized_pool_resource/allocate_single.cc: New test. * testsuite/20_util/synchronized_pool_resource/cons_single.cc: New test. * testsuite/20_util/synchronized_pool_resource/release_single.cc: New test. 2020-05-03 Jonathan Wakely PR libstdc++/94933 * include/bits/stl_algobase.h (__fill_a1): Make overload for byte types usable in constant expressions. * testsuite/25_algorithms/fill_n/constexpr.cc: Test with bytes and non-scalars. 2020-05-01 Jonathan Wakely PR libstdc++/94901 * testsuite/17_intro/badnames.cc: Test values between _E9 and _E24 too. 2020-05-01 Jonathan Wakely Patrick Palka PR libstdc++/92894 * include/bits/iterator_concepts.h (ranges::__cust_imove::_IMove): Add trait to determine return type and an alias for it. (ranges::__cust_imove::_IMove::operator()): Use __result instead of deduced return type. (iter_rvalue_reference_t): Use _IMove::__type instead of checking the result of ranges::iter_move. (__detail::__indirectly_readable_impl): Use iter_rvalue_reference_t instead of checking the result of ranges::iter_move. * testsuite/24_iterators/customization_points/92894.cc: New test. * testsuite/24_iterators/indirect_callable/92894.cc: New test. 2020-05-01 Jonathan Wakely PR libstdc++/94901 * include/std/type_traits (__is_complete_or_unbounded): Replace BADNAME _T with _Tp. * testsuite/17_intro/badnames.cc: New test. 2020-04-30 Jonathan Wakely PR libstdc++/89510 * include/bits/alloc_traits.h (allocator_traits::_S_construct) (allocator_traits::_S_destroy) (allocator_traits>::construct): Use traits in noexcept-specifiers. * include/bits/allocator.h (allocator::construct) (allocator::destroy): Likewise. * include/ext/malloc_allocator.h (malloc_allocator::construct) (malloc_allocator::destroy): Likewise. * include/ext/new_allocator.h (new_allocator::construct) (new_allocator::destroy): Likewise. * testsuite/20_util/allocator/89510.cc: New test. * testsuite/ext/malloc_allocator/89510.cc: New test. * testsuite/ext/new_allocator/89510.cc: New test. 2020-04-29 Jonathan Wakely PR libstdc++/94854 * include/bits/basic_string.tcc: Update comment about explicit instantiations. 2020-04-28 Jonathan Wakely PR libstdc++/91480 * include/bits/allocator.h (__cpp_lib_allocator_is_always_equal): Remove non-standard macro. * include/bits/stl_iterator.h (__cpp_lib_constexpr_iterator): Define to indicate P1032R1 support. * include/bits/stl_pair.h (__cpp_lib_constexpr_utility): Likewise. * include/std/string_view (__cpp_lib_constexpr_string_view): Likewise. * include/std/tuple (__cpp_lib_constexpr_tuple): Likewise. * include/std/version (__cpp_lib_allocator_is_always_equal): Remove. (__cpp_lib_constexpr_iterator, __cpp_lib_constexpr_string_view) (__cpp_lib_constexpr_tuple, __cpp_lib_constexpr_utility): Define. * testsuite/20_util/function_objects/constexpr_searcher.cc: Check feature test macro. * testsuite/20_util/tuple/cons/constexpr_allocator_arg_t.cc: Likewise. * testsuite/21_strings/basic_string_view/operations/copy/char/ constexpr.cc: Likewise. * testsuite/24_iterators/insert_iterator/constexpr.cc: Likewise. PR libstdc++/94831 * include/bits/alloc_traits.h (_S_construct): Restore placement new-expression for C++11/14/17 and call std::construct_at directly for C++20. * include/bits/stl_construct.h (_Construct): Revert to non-constexpr function returning void. * testsuite/20_util/specialized_algorithms/ uninitialized_value_construct/94831.cc: New test. * testsuite/23_containers/vector/cons/94831.cc: New test. 2020-04-28 Patrick Palka LWG 3433 subrange::advance(n) has UB when n < 0 * include/std/ranges (subrange::prev): Fix typo. (subrange::advance): Handle a negative argument as per the proposed resolution of LWG 3433. * testsuite/std/ranges/subrange/lwg3433.cc: New test. 2020-04-28 Jonathan Wakely Iain Sandoe PR c++/94759 * include/std/coroutine: Implement handing for non- class coroutine return types. 2020-04-24 Jonathan Wakely * include/experimental/executor (service_already_exists): Make default constructor public (LWG 3414). * testsuite/experimental/net/execution_context/make_service.cc: Check the service_already_exists can be default constructed. 2020-04-24 Kamlesh Kumar Jonathan Wakely PR libstdc++/90415 PR libstdc++/92156 * include/std/any (any): Rename template parameters for consistency with the standard. (any::_Decay): Rename to _Decay_if_not_any. (any::any(T&&):: Remove is_constructible from constraints. Remove non-standard overload. (any::any(in_place_type_t, Args&&...)) (any::any(in_place_type_t, initializer_list, Args&&...)) (any::emplace(Args&&...)) (any::emplace(initializer_list, Args&&...)): Use decay_t instead of _Decay. * testsuite/20_util/any/cons/90415.cc: New test. * testsuite/20_util/any/cons/92156.cc: New Test. * testsuite/20_util/any/misc/any_cast_neg.cc: Make dg-error directives more robust. * testsuite/20_util/any/modifiers/92156.cc: New test. 2020-04-23 Jonathan Wakely * doc/xml/manual/status_cxx2020.xml: Update C++20 status table. * doc/html/*: Regenerate. * include/bits/stl_iterator.h (__cpp_lib_array_constexpr): Revert value for C++17 to 201803L because P0858R0 is supported for C++17. * include/std/version (__cpp_lib_array_constexpr): Likewise. * testsuite/23_containers/array/element_access/constexpr_c++17.cc: Check for value corresponding to P0031R0 features being tested. * testsuite/23_containers/array/requirements/constexpr_iter.cc: Check for value corresponding to P0858R0 features being tested. * include/std/version (__cpp_lib_three_way_comparison): Define for freestanding builds. 2020-04-23 Thomas Rodgers * include/experimental/net/executor (system_context): Mark system_context::system_context() = delete. * testsuite/experimental/net/executor/1.cc: Add new test to check system_context is not default constructible. 2020-04-23 Iain Sandoe * include/std/coroutine: Update the inline namespace to __n4861. Add the __cpp_lib_coroutine define, set to 201902L. * include/std/version: Add __cpp_lib_coroutine, set to 201902L. 2020-04-22 Jonathan Wakely * include/std/execution (__cpp_lib_execution): Define to indicate support for P0024R2 and P1001R2. * include/std/version (__cpp_lib_execution): Define. * testsuite/25_algorithms/pstl/feature_test.cc: Only test macro defined by , move other tests to new tests ... * testsuite/25_algorithms/pstl/feature_test-2.cc: New test. * testsuite/25_algorithms/pstl/feature_test-3.cc: New test. * testsuite/25_algorithms/pstl/feature_test-4.cc: New test. * testsuite/25_algorithms/pstl/feature_test-5.cc: New test. * include/bits/stl_iterator.h (__cpp_lib_array_constexpr): Define different values for C++17 and C++20, to indicate different feature sets. Update value for C++20 to indicate P1032R1 support. * include/std/version (__cpp_lib_array_constexpr): Likewise. * testsuite/23_containers/array/comparison_operators/constexpr.cc: Check feature test macro. * testsuite/23_containers/array/element_access/constexpr_c++17.cc: New test. * testsuite/23_containers/array/requirements/constexpr_fill.cc: Check feature test macro. * testsuite/23_containers/array/requirements/constexpr_iter.cc: Test in C++17 mode and check feature test macro. * include/std/utility (__cpp_lib_constexpr_algorithms): Do not define here. * testsuite/20_util/exchange/constexpr.cc: Do not expect macro to be defined by . * include/std/functional (__cpp_lib_concepts): Update macro value to indicate P1964R2 support. * include/std/version (__cpp_lib_concepts): Likewise. * testsuite/std/concepts/1.cc: Adjust expected value. * testsuite/std/concepts/2.cc: Likewise. * include/std/functional (__cpp_lib_constexpr_invoke): Rename to __cpp_lib_constexpr_functional. * include/std/version (__cpp_lib_constexpr_invoke): Likewise. * testsuite/20_util/function_objects/invoke/constexpr.cc: Adjust. * include/bits/ptr_traits.h (__cpp_lib_constexpr_memory): Define to indicate P1006R1 support. (__cpp_lib_to_address): Define to indicate P0653R2 support. * include/bits/range_access.h (__cpp_lib_ssize): Define to indicate P1227R2 support. * include/bits/ranges_algo.h (__cpp_lib_shift): Define to indicate P0769R2 support. * include/std/atomic (__cpp_lib_atomic_float): Define to indicate P0020R6 support. * include/std/memory (__cpp_lib_assume_aligned): Define to indicate P1007R3 support. * include/std/memory_resource (__cpp_lib_polymorphic_allocator): Define to indicate P0339R6 support. * include/std/string_view (__cpp_lib_starts_ends_with): Define to indicate P0457R2 support. * include/std/type_traits (__cpp_lib_is_nothrow_convertible): Define to indicate P0758R1 support. (__cpp_lib_remove_cvref): Define to indicate P0550R2 support. (__cpp_lib_type_identity): Define to indicate P0887R1 support. * include/std/version (__cpp_lib_atomic_float) (__cpp_lib_is_nothrow_convertible, __cpp_lib_remove_cvref) (__cpp_lib_type_identity, __cpp_lib_assume_aligned) (__cpp_lib_constexpr_memory, __cpp_lib_polymorphic_allocator) (__cpp_lib_shift, __cpp_lib_ssize, __cpp_lib_starts_ends_with) (__cpp_lib_to_address): Define. * testsuite/20_util/to_address/1_neg.cc: Adjust dg-error line number. * include/bits/stl_map.h (__cpp_lib_map_insertion): Remove old macro. * include/bits/unordered_map.h (__cpp_lib_unordered_map_insertion): Likewise. * include/std/version (__cpp_lib_map_insertion) (__cpp_lib_unordered_map_insertion): Remove. * include/std/condition_variable (__cpp_lib_jthread): Remove redundant definition. * include/std/stop_token (__cpp_lib_jthread): Update macro value to indicate P1869R1 support. * include/std/version (__cpp_lib_jthread): Update value. * testsuite/30_threads/condition_variable_any/stop_token/1.cc: Check for updated macro value. * testsuite/30_threads/condition_variable_any/stop_token/2.cc: Likewise. * testsuite/30_threads/jthread/1.cc: Likewise. * testsuite/30_threads/jthread/2.cc: Likewise. * testsuite/30_threads/stop_token/1.cc: Likewise. * testsuite/30_threads/stop_token/2.cc: Likewise. * testsuite/21_strings/basic_string/erasure.cc: Check for __cpp_lib_erase_if macro. * testsuite/23_containers/deque/erasure.cc: Add header name to #error messages. * testsuite/23_containers/forward_list/erasure.cc: Likewise. * testsuite/23_containers/list/erasure.cc: Likewise. * testsuite/23_containers/map/erasure.cc: Likewise. * testsuite/23_containers/set/erasure.cc: Likewise. * testsuite/23_containers/unordered_map/erasure.cc: Likewise. * testsuite/23_containers/unordered_set/erasure.cc: Likewise. * testsuite/23_containers/vector/erasure.cc: Likewise. 2020-04-21 Jonathan Wakely * include/bits/stl_iterator.h (__normal_iterator): Use synth-three-way to define operator<=>. * testsuite/24_iterators/normal_iterator/cmp_c++20.cc: New test. * doc/Makefile.am (xml_sources_manual): Add missing XML files. * doc/Makefile.in: Regenerate. * doc/xml/manual/status_cxx1998.xml: Refer to "this section" instead of "this page". * doc/xml/manual/status_cxx2011.xml: Formatting and other corrections to the C++11 status table. * doc/xml/manual/status_cxx2014.xml: Replace list of C++14 feature proposals with table matching contents of the C++14 standard. * doc/xml/manual/status_cxx2017.xml: Add table matching contents of the C++17 standard. * doc/html/*: Regenerate. PR c++/94149 * include/std/type_traits (__is_nt_constructible_impl): Add partial specializations for bounded arrays with non-empty initializers. * testsuite/20_util/is_nothrow_constructible/value_c++20.cc: New test. 2020-04-20 Thomas Rodgers * testsuite/lib/libstdc++.exp: Add additional_flags= -DTBB_SUPRESS_DEPRECATED_MESSAGES=1 to suppress warnings when compiling with a newer Thread Building Blocks. 2020-04-20 Jonathan Wakely * testsuite/24_iterators/istreambuf_iterator/sentinel.cc: New test. * testsuite/20_util/is_constructible/51185.cc: Make test class a non-aggregate so that the test verifies the same thing in all -std modes. * testsuite/20_util/is_constructible/value-2.cc: Adjust expected results for some types when paren-init for aggregates is supported. * include/std/version (__cpp_lib_three_way_comparison): Update value. * libsupc++/compare (__cpp_lib_three_way_comparison): Likewise. (__detail::__synth3way): Add noexcept-specifier. * include/bits/stl_map.h (map): Define operator<=> and remove operator< for C++20. * include/bits/stl_multimap.h (multimap): Likewise. * include/bits/stl_multiset.h (multiset): Likewise. * include/bits/stl_set.h (set): Likewise. * include/bits/stl_tree.h (_Rb_tree): Likewise. (_Rb_tree_iterator, _Rb_tree_const_iterator): Remove redundant operator!= for C++20. * include/debug/map.h (__gnu_debug::map): Define operator<=> for C++20. * include/debug/multimap.h (__gnu_debug::multimap): Likewise. * include/debug/multiset.h (__gnu_debug::multiset): Likewise. * include/debug/set.h (__gnu_debug::set): Likewise. * testsuite/23_containers/map/operators/cmp_c++20.cc: New test. * testsuite/23_containers/multimap/operators/cmp_c++20.cc: New test. * testsuite/23_containers/multiset/operators/cmp_c++20.cc: New test. * testsuite/23_containers/set/operators/cmp_c++20.cc: New test. 2020-04-20 Matthias Kretz * testsuite/lib/libstdc++.exp: Avoid illegal argument to verbose. 2020-04-19 Jonathan Wakely * include/bits/stl_queue.h (queue): Define operator<=> for C++20. * include/bits/stl_stack.h (stack): Likewise. * testsuite/23_containers/queue/cmp_c++20.cc: New test. * testsuite/23_containers/stack/cmp_c++20.cc: New test. * include/bits/unordered_map.h (unordered_map, unordered_multimap): Remove redundant operator!= for C++20. * include/bits/unordered_set.h (unordered_set, unordered_multiset): Likewise. * include/debug/unordered_map (unordered_map, unordered_multimap): Likewise. * include/debug/unordered_set (unordered_set, unordered_multiset): Likewise. PR other/94629 * include/debug/formatter.h (_Error_formatter::_Parameter): Fix redundant assignment in constructor. 2020-04-18 Jonathan Wakely * include/std/chrono (duration, time_point): Define operator<=> and remove redundant operator!= for C++20. * testsuite/20_util/duration/comparison_operators/three_way.cc: New test. * testsuite/20_util/time_point/comparison_operators/three_way.cc: New test. * testsuite/util/native_type/native_priority_queue.hpp: Use allocator_traits to rebind allocator. 2020-04-17 Jonathan Wakely * include/bits/forward_list.h (forward_list): Define operator<=> and remove redundant comparison operators for C++20. * include/bits/stl_bvector.h (vector): Likewise. * include/bits/stl_deque.h (deque): Likewise. * include/bits/stl_iterator.h (__normal_iterator): Likewise. * include/bits/stl_list.h (list): Likewise. * include/bits/stl_vector.h (vector): Likewise. * include/debug/deque (__gnu_debug::deque): Likewise. * include/debug/forward_list (__gnu_debug::forward_list): Likewise. * include/debug/list (__gnu_debug::list): Likewise. * include/debug/safe_iterator.h (__gnu_debug::_Safe_iterator): Likewise. * include/debug/vector (__gnu_debug::vector): Likewise. * include/ext/pointer.h (__gnu_cxx::_Pointer_adapter): Define operator<=> for C++20. * testsuite/23_containers/deque/operators/cmp_c++20.cc: New test. * testsuite/23_containers/forward_list/cmp_c++20.cc: New test. * testsuite/23_containers/list/cmp_c++20.cc: New test. * testsuite/23_containers/vector/bool/cmp_c++20.cc: New test. * testsuite/23_containers/vector/cmp_c++20.cc: New test. * include/bits/basic_string.h (basic_string): Define operator<=> and remove redundant comparison operators for C++20. * include/bits/char_traits.h (__gnu_cxx::char_traits, char_traits): Add comparison_category members. (__detail::__char_traits_cmp_cat): New helper to get comparison category from char traits class. * include/bits/regex.h (regex_traits::_RegexMask::operator!=): Do not define for C++20. (sub_match): Define operator<=> and remove redundant comparison operators for C++20. (match_results): Remove redundant operator!= for C++20. * include/std/string_view (basic_string_view): Define operator<=> and remove redundant comparison operators for C++20. * testsuite/21_strings/basic_string/operators/char/cmp_c++20.cc: New test. * testsuite/21_strings/basic_string/operators/wchar_t/cmp_c++20.cc: New test. * testsuite/21_strings/basic_string_view/operations/copy/char/ constexpr.cc: Initialize variable. * testsuite/21_strings/basic_string_view/operations/copy/wchar_t/ constexpr.cc: Likewise. * testsuite/21_strings/basic_string_view/operators/char/2.cc: Add dg-do directive and remove comments showing incorrect signatures. * testsuite/21_strings/basic_string_view/operators/wchar_t/2.cc: Likewise. * testsuite/21_strings/basic_string_view/operators/char/cmp_c++20.cc: New test. * testsuite/21_strings/basic_string_view/operators/wchar_t/cmp_c++20.cc: New test. * testsuite/28_regex/sub_match/compare_c++20.cc: New test. 2020-04-16 Jonathan Wakely * testsuite/20_util/unsynchronized_pool_resource/allocate.cc: Remove name of unused parameter. 2020-04-15 Jonathan Wakely * include/bits/fs_dir.h (file_status): Define operator== for C++20. (directory_entry): Define operator<=> and remove redundant comparison operators for C++20. * include/bits/fs_fwd.h (space_info): Define operator== for C++20. * include/bits/fs_path.h (path): Define operator<=> and remove redundant comparison operators for C++20. * testsuite/27_io/filesystem/path/compare/compare.cc: Fix comment. * 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. * include/bits/allocator.h (operator!=): Do not define for C++20. * include/bits/locale_classes.h (operator!=): Likewise. * include/bits/std_function.h (operator==(nullptr_t, const function&)) (operator!=(const function&, nullptr_t)) (operator!=(nullptr_t, const function&)): Likewise. * include/ext/bitmap_allocator.h (operator!=): Likewise. * include/ext/debug_allocator.h (operator!=): Likewise. * include/ext/extptr_allocator.h (operator!=): Likewise. * include/ext/malloc_allocator.h (operator!=): Likewise. * include/ext/mt_allocator.h (operator!=): Likewise. * include/ext/new_allocator.h (operator!=): Likewise. * include/ext/pool_allocator.h (operator!=): Likewise. * include/ext/throw_allocator.h (operator!=): Likewise. * include/std/bitset (bitset::operator!=): Likewise. * include/std/memory_resource (operator!=): Likewise. * include/std/scoped_allocator (operator!=): Likewise. * include/std/typeindex (operator<=>): Define for C++20. * testsuite/20_util/typeindex/comparison_operators_c++20.cc: New test. 2020-04-14 Jonathan Wakely * libsupc++/compare (compare_three_way): Fix constraint so that BUILTIN-PTR-THREE-WAY does not require three_way_comparable_with. * testsuite/18_support/comparisons/object/builtin-ptr-three-way.cc: New test. PR libstdc++/94562 * include/bits/shared_ptr.h (operator<=>): Define for C++20. * include/bits/shared_ptr_base.h (operator<=>): Likewise. * include/bits/unique_ptr.h (operator<=>): Add inline specifier. * testsuite/20_util/shared_ptr/comparison/cmp_c++20.cc: New test. * testsuite/20_util/shared_ptr/comparison/less.cc: Do not expect std::less to be used when comparing std::shared_ptr objects in C++20. PR libstdc++/94565 * libsupc++/compare (__unspec): Add noexcept-specifier to constructor. * testsuite/18_support/comparisons/categories/94565.cc: New test. 2020-04-13 Iain Sandoe * include/std/coroutine: Update coroutines builtin define, per n4861. 2020-04-09 Jonathan Wakely * libsupc++/compare (compare_three_way): Fix noexcept-specifier. (strong_order, weak_order, partial_order): Replace uses of <=> with compare_three_way function object (LWG 3324). * testsuite/18_support/comparisons/algorithms/partial_order.cc: Add equality operator so that X satisfies three_way_comparable. * testsuite/18_support/comparisons/algorithms/strong_order.cc: Likewise. * testsuite/18_support/comparisons/algorithms/weak_order.cc: Likewise. * include/bits/unique_ptr.h (operator<=>): Define for C++20. * testsuite/20_util/default_delete/48631_neg.cc: Adjust dg-error line. * testsuite/20_util/default_delete/void_neg.cc: Likewise. * testsuite/20_util/unique_ptr/comparison/compare.cc: New test. * testsuite/20_util/unique_ptr/comparison/compare_c++20.cc: New test. 2020-04-08 Jonathan Wakely * include/bits/slice_array.h (operator==(const slice&, const slice&)): Define for C++20. * include/std/complex (operator==(const T&, const complex&)) (operator!=(const complex&, const complex&)) (operator!=(const complex&, const T&)) (operator!=(const T&, const complex&)): Do not declare for C++20. * testsuite/26_numerics/slice/compare.cc: New test. * include/std/charconv (to_chars_result, from_chars_result): Add defaulted equality comparisons for C++20. * testsuite/20_util/from_chars/compare.cc: New test. * testsuite/20_util/to_chars/compare.cc: New test. 2020-04-07 Jonathan Wakely PR libstdc++/94520 * include/std/charconv (__integer_to_chars_result_type) (__integer_from_chars_result_type): Use __or_ instead of __or_v_ to allow use in C++14. * testsuite/20_util/from_chars/1.cc: Run test as C++14 and replace use of std::string_view with std::string. * testsuite/20_util/from_chars/2.cc: Likewise. * testsuite/20_util/to_chars/1.cc: Likewise. * testsuite/20_util/to_chars/2.cc: Likewise. 2020-04-06 Jonathan Wakely PR libstdc++/94498 * include/bits/char_traits.h (__gnu_cxx::char_traits::move): Make it usable in constant expressions for C++20. (__gnu_cxx::char_traits::copy, __gnu_cxx::char_traits::assign): Add _GLIBCXX20_CONSTEXPR. (std::char_traits, std::char_traits) (std::char_traits): Make move, copy and assign usable in constant expressions for C++20. (std::char_traits, std::char_traits): Make move and copy usable in constant expressions for C++20. * include/std/string_view (basic_string_view::copy): Add _GLIBCXX20_CONSTEXPR. * testsuite/21_strings/basic_string_view/operations/copy/char/ constexpr.cc: New test. * testsuite/21_strings/basic_string_view/operations/copy/wchar_t/ constexpr.cc: New test. 2020-04-05 Gerald Pfeifer * doc/xml/manual/appendix_contributing.xml: Refer to Git documentation instead of Subversion. Switch to https. * doc/html/manual/appendix_contributing.html: Regenerate. 2020-04-03 Jonathan Wakely PR libstdc++/93960 * include/bits/ptr_traits.h (__to_address): Add special case for debug iterators, to avoid dereferenceable check. * testsuite/20_util/to_address/1_neg.cc: Adjust dg-error line number. * testsuite/20_util/to_address/debug.cc: New test. 2020-04-01 Andrea Corallo * testsuite/experimental/net/execution_context/use_service.cc: Require pthread and gthreads. 2020-04-01 Gerald Pfeifer * doc/xml/manual/appendix_free.xml: Move "free books" list from fsf.org to gnu.org. * doc/html/manual/appendix_free.html: Regenerate. 2020-03-31 Ville Voutilainen Library-side tests for parenthesized aggregate init PR c++/92878 PR c++/92947 * testsuite/20_util/allocator_traits/members/92878_92947.cc: New. * testsuite/20_util/any/assign/92878_92947.cc: Likewise. * testsuite/20_util/any/cons/92878_92947.cc: Likewise. * testsuite/20_util/is_constructible/92878_92947.cc: Likewise. * testsuite/20_util/optional/assignment/92878_92947.cc: Likewise. * testsuite/20_util/optional/cons/92878_92947.cc: Likewise. * testsuite/20_util/pair/cons/92878_92947.cc: Likewise. * testsuite/20_util/shared_ptr/creation/92878_92947.cc: Likewise. * testsuite/20_util/specialized_algorithms/construct_at/92878_92947.cc: Likewise. * testsuite/20_util/unique_ptr/creation/92878_92947.cc: Likewise. * testsuite/20_util/uses_allocator/92878_92947.cc: Likewise. * testsuite/20_util/variant/92878_92947.cc: Likewise. * testsuite/23_containers/deque/modifiers/emplace/92878_92947.cc: Likewise. * testsuite/23_containers/forward_list/modifiers/92878_92947.cc: Likewise. * testsuite/23_containers/list/modifiers/emplace/92878_92947.cc: Likewise. * testsuite/23_containers/map/modifiers/emplace/92878_92947.cc: Likewise. * testsuite/23_containers/multimap/modifiers/emplace/92878_92947.cc: Likewise. * testsuite/23_containers/multiset/modifiers/emplace/92878_92947.cc: Likewise. * testsuite/23_containers/priority_queue/92878_92947.cc: Likewise. * testsuite/23_containers/queue/92878_92947.cc: Likewise. * testsuite/23_containers/set/modifiers/emplace/92878_92947.cc: Likewise. * testsuite/23_containers/stack/92878_92947.cc: Likewise. * testsuite/23_containers/unordered_map/modifiers/92878_92947.cc: Likewise. * testsuite/23_containers/unordered_multimap/modifiers/92878_92947.cc: Likewise. * testsuite/23_containers/unordered_multiset/modifiers/92878_92947.cc: Likewise. * testsuite/23_containers/unordered_set/modifiers/92878_92947.cc: Likewise. * testsuite/23_containers/vector/modifiers/emplace/92878_92947.cc: Likewise. 2020-03-28 Jonathan Wakely * testsuite/20_util/is_constructible/value-2.cc: Fix test to account for changes due to parenthesized aggregate-initialization in C++20. * testsuite/20_util/time_point/cons/81468.cc: Fix test to not clash with std::chrono::sys_time in C++20. * include/bits/stl_iterator.h (reverse_iterator): Use requires-clause to constrain C++20 versions of comparison operators. Fix backwards logic of relational operators. (move_iterator): Use requires-clause to constrain comparison operators in C++20. Do not declare non-standard same-type overloads for C++20. * testsuite/24_iterators/move_iterator/rel_ops_c++20.cc: Check result of comparisons and check using greedy_ops type. * testsuite/24_iterators/reverse_iterator/rel_ops_c++20.cc: Likewise. * testsuite/24_iterators/move_iterator/greedy_ops.cc: Remove redundant main function from compile-only test. * testsuite/24_iterators/reverse_iterator/greedy_ops.cc: Likewise. 2020-03-27 Jonathan Wakely * include/bits/range_cmp.h (__cpp_lib_ranges): Define. * include/bits/stl_iterator.h: Check value of __cpp_concepts so that C++20 concepts are required. * include/bits/stl_iterator_base_types.h: Likewise. * include/std/concepts: Likewise. * include/std/version: Likewise. * testsuite/std/ranges/headers/ranges/synopsis.cc: Check feature test macro. * include/bits/stl_iterator.h (reverse_iterator::iterator_concept) (reverse_iterator::iterator_category): Define for C++20. (reverse_iterator): Define comparison operators correctly for C++20. (__normal_iterator): Add constraints to comparison operators for C++20. (move_iterator::operator++(int)) [__cpp_lib_concepts]: Define new overload for input iterators. (move_iterator): Add constraints to comparison operators for C++20. Define operator<=> for C++20. * testsuite/24_iterators/move_iterator/input_iterator.cc: New test. * testsuite/24_iterators/move_iterator/move_only.cc: New test. * testsuite/24_iterators/move_iterator/rel_ops_c++20.cc: New test. * testsuite/24_iterators/reverse_iterator/rel_ops_c++20.cc: New test. * include/bits/iterator_concepts.h (__detail::__decay_copy) (__detail::__member_begin, __detail::__adl_begin): Move here from . (__detail::__ranges_begin, __detail::__range_iter_t): Define. * bits/range_access.h (__cust_access::__decay_copy) (__cust_access::__member_begin, __cust_access::__adl_begin): Move to . (ranges::iterator_t): Use __detail::__range_iter_t. * include/bits/stl_iterator.h (back_insert_iterator): Simplify conditional compilation. Add _GLIBCXX20_CONSTEXPR to all members. (front_insert_iterator): Likewise. (insert_iterator): Implement changes from P0896R4 for C++20. * testsuite/24_iterators/back_insert_iterator/constexpr.cc: New test. * testsuite/24_iterators/front_insert_iterator/constexpr.cc: New test. * testsuite/24_iterators/headers/iterator/synopsis_c++17.cc: Adjust for inclusion in synopsis_c++20.cc which expects different signatures for some function templates. * testsuite/24_iterators/insert_iterator/constexpr.cc: New test. * include/std/type_traits (__is_array_convertible): Move definition to immediately after is_convertible. 2020-03-26 Jonathan Wakely * include/std/chrono (chrono::days, chrono::weeks, chrono::years) (chrono::months, chrono::sys_days, chrono::local_t) (chrono::local_time, chrono::local_seconds, chrono::local_days): Define for C++20. (chrono::time_point): Add missing static assert. * testsuite/20_util/time_point/requirements/duration_neg.cc: New test. * testsuite/std/time/clock/file/overview.cc: New test. * testsuite/std/time/clock/file/members.cc: New test. * testsuite/std/time/syn_c++20.cc: New test. 2020-03-25 Mike Crowe * testsuite/30_threads/shared_timed_mutex/try_lock_until/1.cc: New test. * testsuite/30_threads/shared_timed_mutex/try_lock_until/2.cc: New test. 2020-03-25 Jonathan Wakely * include/bits/fs_fwd.h (filesystem::__file_clock): Move to ... * include/std/chrono (filesystem::__file_clock): Here. (filesystem::__file_clock::from_sys, filesystem::__file_clock::to_sys): Define public member functions for C++20. (is_clock, is_clock_v): Define traits for C++20. * include/std/condition_variable (condition_variable::wait_until): Add check for valid clock. * include/std/future (_State_baseV2::wait_until): Likewise. * include/std/mutex (__timed_mutex_impl::_M_try_lock_until): Likewise. * include/std/shared_mutex (shared_timed_mutex::try_lock_shared_until): Likewise. * include/std/thread (this_thread::sleep_until): Likewise. * testsuite/30_threads/condition_variable/members/2.cc: Qualify slow_clock with new namespace. * testsuite/30_threads/condition_variable/members/clock_neg.cc: New test. * testsuite/30_threads/condition_variable_any/members/clock_neg.cc: New test. * testsuite/30_threads/future/members/clock_neg.cc: New test. * testsuite/30_threads/recursive_timed_mutex/try_lock_until/3.cc: Qualify slow_clock with new namespace. * testsuite/30_threads/recursive_timed_mutex/try_lock_until/ clock_neg.cc: New test. * testsuite/30_threads/shared_future/members/clock_neg.cc: New test. * testsuite/30_threads/shared_lock/locking/clock_neg.cc: New test. * testsuite/30_threads/shared_timed_mutex/try_lock_until/clock_neg.cc: New test. * testsuite/30_threads/timed_mutex/try_lock_until/3.cc: Qualify slow_clock with new namespace. * testsuite/30_threads/timed_mutex/try_lock_until/4.cc: Likewise. * testsuite/30_threads/timed_mutex/try_lock_until/clock_neg.cc: New test. * testsuite/30_threads/unique_lock/locking/clock_neg.cc: New test. * testsuite/std/time/traits/is_clock.cc: New test. * testsuite/util/slow_clock.h (slow_clock): Move to __gnu_test namespace. 2020-03-21 Jonathan Wakely PR libstdc++/93245 * include/experimental/bits/fs_path.h (path::generic_string()): * testsuite/experimental/filesystem/path/generic/generic_string.cc: Improve test coverage. PR libstdc++/94242 * include/bits/fs_path.h (path::_S_str_convert): Replace first parameter with basic_string_view so that strings with different allocators can be accepted. (path::generic_string()): Use basic_string object that uses the right allocator type. * testsuite/27_io/filesystem/path/generic/94242.cc: New test. * testsuite/27_io/filesystem/path/generic/generic_string.cc: Improve test coverage. 2020-03-18 Jonathan Wakely PR libstdc++/94033 * include/std/type_traits (__is_nt_default_constructible_atom): Remove. (__is_nt_default_constructible_impl): Remove. (__is_nothrow_default_constructible_impl): Remove. (__is_nt_constructible_impl): Add bool template parameter. Adjust partial specializations. (__is_nothrow_constructible_impl): Replace class template with alias template. (is_nothrow_default_constructible): Derive from alias template __is_nothrow_constructible_impl instead of __is_nothrow_default_constructible_impl. * testsuite/20_util/is_nothrow_constructible/94003.cc: New test. * include/std/stop_token (stop_token::_Stop_state_ref): Define comparison operators explicitly if the compiler won't synthesize them. * include/bits/stl_algobase.h (__lexicographical_compare_aux): Check __cpp_lib_concepts before using iter_reference_t. * include/bits/stream_iterator.h (istream_iterator): Check __cpp_lib_concepts before using default_sentinel_t. * include/bits/streambuf_iterator.h (istreambuf_iterator): Likewise. PR libstdc++/94203 * include/experimental/executor (executor::executor(Executor)): Call make_shared directly instead of _M_create. Create _Tgt1 object. (executor::executor(allocator_arg_t, const ProtoAlloc&, Executor)): Call allocate_shared directly instead of _M_create. Create _Tgt2 object. (executor::target_type): Add cast needed for new _Tgt interface. (executor::target): Define when RTTI is disabled. Use _Tgt::_M_func. (executor::_Tgt): Define the same interface whether RTTI is enabled or not. (executor::_Tgt::target_type, executor::_Tgt::target): Do not use std::type_info in the interface. (executor::_Tgt::_M_func): Add data member. (executor::_TgtImpl): Replace with _Tgt1 and _Tgt2 class templates. (executor::_Tgt1::_S_func): Define function to access target without depending on RTTI. (executor::_M_create): Remove. (operator==, operator!=): Simplify comparisons for executor. * include/experimental/socket (is_error_code_enum): Define specialization before use. * testsuite/experimental/net/executor/1.cc: New test. 2020-03-16 Jonathan Wakely PR libstdc++/94199 * include/experimental/executor (service_already_exists): Add default constructor. Declare make_service to be a friend. * testsuite/experimental/net/execution_context/make_service.cc: New test. 2020-03-12 Jonathan Wakely * testsuite/tr1/8_c_compatibility/cstdlib/functions.cc: Do not pass a null pointer to functions with nonnull(1) attribute. 2020-03-11 Patrick Palka * include/std/ranges (split_view::_OuterIter::_OuterIter): Typo fix, 'address' -> 'std::__addressof'. * testsuite/std/ranges/adaptors/split.cc: Test taking the split_view of a non-forward input_range. * testsuite/util/testsuite_iterators.h (output_iterator_wrapper): Make default constructor protected instead of deleted, like with input_iterator_wrapper. (test_range::iterator): Add comment explaining that this type is used only when the underlying wrapper is input_iterator_wrapper or output_iterator_wrapper. Remove delegating defaulted constructor so that the inherited default constructor is used instead. LWG 3286 ranges::size is not required to be valid after a call to ranges::begin on an input range * include/std/ranges (subrange::subrange): Split single-argument constructor into two, one constrained by _S_store_size and another by !_S_store_size. (take_view::begin): Call size() before calling ranges::begin(_M_base). * testsuite/std/ranges/adaptors/lwg3286.cc: New test. * testsuite/std/ranges/subrange/lwg3286.cc: New test. 2020-03-10 Jonathan Wakely * include/std/ranges (split_view::_OuterIter::__at_end): Use __current instead of _M_current. (split_view::_OuterIter::operator++): Likewise. * include/std/ranges (transform_view::_Iterator::__iter_move): Remove. (transform_view::_Iterator::operator*): Add noexcept-specifier. (transform_view::_Iterator::iter_move): Inline __iter_move body here. (split_view::_OuterIter::__current): Add noexcept. (split_view::_InnerIter::__iter_swap): Remove. (split_view::_InnerIter::__iter_move): Remove. (split_view::_InnerIter::_M_i_current): New accessors. (split_view::_InnerIter::__at_end): Use _M_i_current(). (split_view::_InnerIter::operator*): Likewise. (split_view::_InnerIter::operator++): Likewise. (iter_move(const _InnerIter&)): Likewise. (iter_swap(const _InnerIter&, const _InnerIter&)): Likewise. * testsuite/std/ranges/adaptors/split.cc: Check noexcept-specifier for iter_move and iter_swap on split_view's inner iterator. PR c++/94117 * include/std/ranges (ranges::transform_view::_Iterator::iter_move): Change expression in noexcept-specifier to match function body. * testsuite/23_containers/unordered_set/allocator/ext_ptr.cc: Add comment explaining multiple dg-do directives. * testsuite/24_iterators/ostream_iterator/1.cc: Fix do-do directive so test is run as well as compiled. 2020-03-09 Jonathan Wakely PR libstdc++/94063 * src/c++17/fs_path.cc (path::operator+=(const path&)): Add kluge to handle concatenations that change the type of the first component. (path::operator+=(basic_string_view)): Likewise. * testsuite/27_io/filesystem/path/concat/94063.cc: New test. 2020-03-06 Patrick Palka * include/std/ranges (join_view::_Sentinel<_Const>): Befriend join_view::_Sentinel. * testsuite/std/ranges/adaptors/join.cc: Augment test. PR libstdc++/93978 * include/bits/range_access.h (__cust_access::_Empty::operator()): Declare return type to be bool instead of auto. * testsuite/std/ranges/adaptors/93978.cc: New test. 2020-03-06 Jonathan Wakely PR libstdc++/94069 * include/std/shared_mutex [!PTHREAD_RWLOCK_INITIALIZER] (__shared_mutex_pthread::__shared_mutex_pthread()): Remove incorrect second argument to __glibcxx_rwlock_init. * testsuite/30_threads/shared_timed_mutex/94069.cc: New test. PR libstdc++/93244 * testsuite/27_io/filesystem/path/generic/generic_string.cc: Adjust test to not fail due to PR 94063. * testsuite/27_io/filesystem/path/generic/utf.cc: Likewise. * testsuite/27_io/filesystem/path/generic/wchar_t.cc: Likewise. 2020-03-06 Andreas Krebbel * src/c++11/system_error.cc: Omit the ENOTSUP case statement if it would match ENOSYS. 2020-03-05 Jonathan Wakely * testsuite/27_io/filesystem/operations/all.cc: Mark unused variable. * testsuite/27_io/filesystem/operations/copy.cc: Fix typo. * testsuite/experimental/filesystem/operations/copy.cc: Likewise. * testsuite/27_io/filesystem/operations/file_size.cc: Use correct type for return value, and in comparison. * testsuite/experimental/filesystem/operations/file_size.cc: Likewise. PR libstdc++/94051 * include/std/string_view: Include . * testsuite/21_strings/basic_string_view/inserters/94051.cc: New test. 2020-03-04 Jonathan Wakely * include/bits/cpp_type_traits.h (__memcpyable): Fix comment. 2020-03-04 Patrick Palka PR libstdc++/94017 * include/bits/ranges_algobase.h (__fill_n_fn::operator()): Refine condition for when to use memset, making sure to additionally check that the output pointer's value type is a non-volatile byte type. Instead of requiring that the fill type is a byte type, just require that it's an integral type. * testsuite/20_util/specialized_algorithms/uninitialized_fill/94017.cc: New test. * testsuite/20_util/specialized_algorithms/uninitialized_fill_n/94017.cc: New test. * testsuite/25_algorithms/fill/94013.cc: Uncomment part of test that was blocked by PR 94017. * testsuite/25_algorithms/fill/94017.cc: New test. * testsuite/25_algorithms/fill_n/94017.cc: New test. LWG 3355 The memory algorithms should support move-only input iterators introduced by P1207 * include/bits/ranges_uninitialized.h (__uninitialized_copy_fn::operator()): Use std::move to avoid attempting to copy __ifirst, which could be a move-only input iterator. Use operator- instead of ranges::distance to compute distance from a sized sentinel. (__uninitialized_copy_n_fn::operator()): Likewise. (__uninitialized_move_fn::operator()): Likewise. (__uninitialized_move_n_fn::operator()): Likewise. (__uninitialized_destroy_fn::operator()): Use std::move to avoid attempting to copy __first. (__uninitialized_destroy_n_fn::operator()): Likewise. * testsuite/20_util/specialized_algorithms/destroy/constrained.cc: Augment test. * .../specialized_algorithms/uninitialized_copy/constrained.cc: Likewise. * .../specialized_algorithms/uninitialized_move/constrained.cc: Likewise. * testsuite/util/testsuite_iterators.h (test_range::get_iterator): Make protected instead of private. (test_sized_range_sized_sent): New. * testsuite/util/testsuite_iterators.h (input_iterator_wrapper_nocopy): New testsuite iterator. * testsuite/24_iterators/counted_iterator/lwg3389.cc: use it. * testsuite/24_iterators/move_iterator/lwg3390.cc: Likewise. * include/bits/ranges_uninitialized.h (uninitialized_copy_fn::operator()): Pass a reference type as the first argument to is_nothrow_assignable_v. (uninitialized_copy_fn::operator()): Likewise. (uninitialized_move_fn::operator()): Likewise. Return an in_out_result with the input iterator stripped of its move_iterator. (uninitialized_move_n_fn::operator()): Likewise. (uninitialized_fill_fn::operator()): Pass a reference type as the first argument to is_nothrow_assignable_v. (uninitialized_fill_n_fn::operator()): Likewise. 2020-03-03 Jonathan Wakely PR libstdc++/94013 * include/bits/cpp_type_traits.h (__memcpyable, __memcmpable): New traits to control when to use memmove and memcmp optimizations. (__is_nonvolatile_trivially_copyable): New helper trait. * include/bits/ranges_algo.h (__lexicographical_compare_fn): Do not use memcmp optimization with volatile data. * include/bits/ranges_algobase.h (__equal_fn): Use __memcmpable. (__copy_or_move, __copy_or_move_backward): Use __memcpyable. * include/bits/stl_algobase.h (__copy_move_a2): Use __memcpyable. (__copy_move_backward_a2): Likewise. (__equal_aux1): Use __memcmpable. (__lexicographical_compare_aux): Do not use memcmp optimization with volatile data. * testsuite/25_algorithms/copy/94013.cc: New test. * testsuite/25_algorithms/copy_backward/94013.cc: New test. * testsuite/25_algorithms/equal/94013.cc: New test. * testsuite/25_algorithms/fill/94013.cc: New test. * testsuite/25_algorithms/lexicographical_compare/94013.cc: New test. * testsuite/25_algorithms/move/94013.cc: New test. * testsuite/25_algorithms/move_backward/94013.cc: New test. * include/bits/stl_algobase.h (lexicographical_compare_three_way): Avoid redundant iterator comparisons (LWG 3410). 2020-03-02 Jonathan Wakely PR libstdc++/93972 * include/bits/stl_algobase.h (__memcmp): Allow pointer types to differ. * testsuite/25_algorithms/lexicographical_compare/uchar.cc: New test. * include/std/ranges (__detail::__maybe_empty_t): Rename to __maybe_present_t. (__adaptor::_RangeAdaptor, join_view, split_view): Use new name. * include/bits/ranges_algo.h (shift_right): Add 'typename' to dependent type. 2020-03-01 H.J. Lu * config/abi/post/x86_64-linux-gnu/x32/baseline_symbols.txt: Updated. 2020-02-29 John David Anglin * testsuite/17_intro/headers/c++1998/charset.cc: Skip on *-*-hpux*. * testsuite/17_intro/headers/c++2011/charset.cc: Likewise. * testsuite/17_intro/headers/c++2014/charset.cc: Likewise. * testsuite/17_intro/headers/c++2017/charset.cc: Likewise. * testsuite/17_intro/headers/c++2020/charset.cc: Likewise. * testsuite/30_threads/condition_variable_any/stop_token/wait_on.cc: Add libatomic option. * testsuite/30_threads/jthread/jthread.cc: Likewise. 2020-02-29 François Dumont * include/bits/stl_algo.h (__find_if, __count_if, __is_permutation, std::is_permutation): Move... * include/bits/stl_algobase.h: ...here. * include/bits/hashtable_policy.h: Remove include. 2020-02-29 John David Anglin * testsuite/30_threads/stop_token/stop_callback.cc: Add libatomic option. * testsuite/30_threads/stop_token/stop_callback/deadlock-mt.cc: Likewise. * testsuite/30_threads/stop_token/stop_callback/deadlock.cc: Likewise. * testsuite/30_threads/stop_token/stop_callback/destroy.cc: Likewise. * testsuite/30_threads/stop_token/stop_callback/invoke.cc: Likewise. * testsuite/30_threads/stop_token/stop_source.cc: Likewise. * testsuite/30_threads/stop_token/stop_source/assign.cc: Likewise. * testsuite/30_threads/stop_token/stop_token.cc: Likewise. * testsuite/30_threads/stop_token/stop_token/stop_possible.cc: Likewise. PR libstdc++/92906 * config/abi/post/hppa-linux-gnu/baseline_symbols.txt: Update. 2020-02-28 Patrick Palka PR libstdc++/93972 * include/bits/ranges_algo.h (__lexicographical_compare_fn::operator()): Fix condition for when to use memcmp, making it consistent with the corresponding condition used in std::lexicographical_compare. * testsuite/25_algorithms/lexicographical_compare/93972.cc: New test. * testsuite/26_numerics/headers/numeric/synopsis.cc: Add signatures for functions introduced in C++11, C++17 and C++2a. Add 'constexpr' to existing signatures for C++2a. 2020-02-28 Jonathan Wakely * testsuite/24_iterators/range_operations/advance_debug_neg.cc: Run test instead of just compiling it. 2020-02-28 Patrick Palka * include/std/ranges (reverse_view::_S_needs_cached_begin): Set to false whenever the underlying range models common_range. * include/std/ranges (__detail::_CachedPosition): New struct. (views::filter_view::_S_needs_cached_begin): New member variable. (views::filter_view::_M_cached_begin): New member variable. (views::filter_view::begin): Use _M_cached_begin to cache its result. (views::drop_view::_S_needs_cached_begin): New static member variable. (views::drop_view::_M_cached_begin): New member variable. (views::drop_view::begin): Use _M_cached_begin to cache its result when _S_needs_cached_begin. (views::drop_while_view::_M_cached_begin): New member variable. (views::drop_while_view::begin): Use _M_cached_begin to cache its result. (views::reverse_view::_S_needs_cached_begin): New static member variable. (views::reverse_view::_M_cached_begin): New member variable. (views::reverse_view::begin): Use _M_cached_begin to cache its result when _S_needs_cached_begin. * testsuite/std/ranges/adaptors/drop.cc: Augment test to check that drop_view::begin caches its result. * testsuite/std/ranges/adaptors/drop_while.cc: Augment test to check that drop_while_view::begin caches its result. * testsuite/std/ranges/adaptors/filter.cc: Augment test to check that filter_view::begin caches its result. * testsuite/std/ranges/adaptors/reverse.cc: Augment test to check that reverse_view::begin caches its result. 2020-02-28 Jonathan Wakely * testsuite/27_io/filesystem/operations/last_write_time.cc: Fixes for filesystems that silently truncate timestamps. * testsuite/experimental/filesystem/operations/last_write_time.cc: Likewise. * testsuite/21_strings/basic_string/cons/char/1.cc: Disable -Wstringop-overflow warnings. 2020-02-27 Jonathan Wakely * testsuite/lib/libstdc++.exp (v3_target_compile): Add -fdiagnostics-urls=never to options. 2020-02-27 Patrick Palka * include/std/ranges (transform_view::_Iterator<_Const>): Befriend _Iterator. (transform_view::_Sentinel<_Const>): Befriend _Sentinel. (take_view::_Sentinel<_Const>): Likewise. (take_while_view::_Sentinel<_Const>): Likewise. (split_view::_OuterIter<_Const>): Befriend _OuterIter. * testsuite/std/ranges/adaptors/split.cc: Augment test. * testsuite/std/ranges/adaptors/take.cc: Augment test. * testsuite/std/ranges/adaptors/take_while.cc: Augment test. * testsuite/std/ranges/adaptors/transform.cc: Augment test. * testsuite/25_algorithms/copy/constrained.cc: Don't assume that the base() of a vector<>::iterator is a pointer. * testsuite/25_algorithms/copy_backward/constrained.cc: Likewise. * testsuite/25_algorithms/move/constrained.cc: Likewise. * testsuite/25_algorithms/move_backward/constrained.cc: Likewise. * testsuite/25_algorithms/inplace_merge/constrained.cc: Use foo.data() instead of &foo[0]. * testsuite/25_algorithms/partial_sort/constrained.cc: Likewise. * testsuite/25_algorithms/partial_sort_copy/constrained.cc: Likewise. * testsuite/25_algorithms/shuffle/constrained.cc: Likewise. * testsuite/25_algorithms/sort/constrained.cc: Likewise. * testsuite/25_algorithms/stable_sort/constrained.cc: Likewise. 2020-02-27 Jonathan Wakely * include/debug/array (operator<=>): Define for C++20. * testsuite/23_containers/array/tuple_interface/get_debug_neg.cc: Adjust dg-error line numbers. * testsuite/23_containers/array/tuple_interface/ tuple_element_debug_neg.cc: Likewise. * testsuite/23_containers/span/back_assert_neg.cc: Add #undef before defining _GLIBCXX_ASSERTIONS. * testsuite/23_containers/span/first_2_assert_neg.cc: Likewise. * testsuite/23_containers/span/first_assert_neg.cc: Likewise. * testsuite/23_containers/span/front_assert_neg.cc: Likewise. * testsuite/23_containers/span/index_op_assert_neg.cc: Likewise. * testsuite/23_containers/span/last_2_assert_neg.cc: Likewise. * testsuite/23_containers/span/last_assert_neg.cc: Likewise. * testsuite/23_containers/span/subspan_2_assert_neg.cc: Likewise. * testsuite/23_containers/span/subspan_3_assert_neg.cc: Likewise. * testsuite/23_containers/span/subspan_4_assert_neg.cc: Likewise. * testsuite/23_containers/span/subspan_5_assert_neg.cc: Likewise. * testsuite/23_containers/span/subspan_6_assert_neg.cc: Likewise. * testsuite/23_containers/span/subspan_assert_neg.cc: Likewise. * include/debug/string (__gnu_debug::basic_string::insert): Fix for C++98 where the member function of the base class returns void. * testsuite/util/testsuite_iterators.h (forward_iterator_wrapper): Add equality comparisons that support value-initialized iterators. * include/bits/boost_concept_check.h (__function_requires): Add _GLIBCXX14_CONSTEXPR. * testsuite/25_algorithms/min/concept_checks.cc: New test. 2020-02-26 Patrick Palka PR libstdc++/93936 * include/std/ranges (split_view::_InnerIter::operator==): Compare the operands' _M_i rather than their _M_i.current(). * testsuite/std/ranges/adaptors/split.cc: Augment test. P1645R1 constexpr for algorithms * include/bits/stl_numeric.h (iota, accumulate, inner_product, partial_sum, adjacent_difference): Make conditionally constexpr for C++20. * include/std/numeric (__cpp_lib_constexpr_numeric): Define this feature test macro. (reduce, transform_reduce, exclusive_scan, inclusive_scan, transform_exclusive_scan, transform_inclusive_scan): Make conditionally constexpr for C++20. * include/std/version (__cpp_lib_constexpr_numeric): Define. * testsuite/26_numerics/accumulate/constexpr.cc: New test. * testsuite/26_numerics/adjacent_difference/constexpr.cc: Likewise. * testsuite/26_numerics/exclusive_scan/constexpr.cc: Likewise. * testsuite/26_numerics/inclusive_scan/constexpr.cc: Likewise. * testsuite/26_numerics/inner_product/constexpr.cc: Likewise. * testsuite/26_numerics/iota/constexpr.cc: Likewise. * testsuite/26_numerics/partial_sum/constexpr.cc: Likewise. * testsuite/26_numerics/reduce/constexpr.cc: Likewise. * testsuite/26_numerics/transform_exclusive_scan/constexpr.cc: Likewise. * testsuite/26_numerics/transform_inclusive_scan/constexpr.cc: Likewise. * testsuite/26_numerics/transform_reduce/constexpr.cc: Likewise. 2020-02-26 Jonathan Wakely * include/bits/ranges_algo.h (__lexicographical_compare_fn): Declare variables in smaller scope and avoid calling ranges::distance when we know they are pointers. Remove statically-unreachable use of __builtin_unreachable(). * include/bits/stl_algobase.h (__lexicographical_compare::__lc): Define inline. * include/std/ranges (__detail::__maybe_empty_t): Define new helper alias. (__detail::__maybe_const_t): Likewise. (__adaptor::_RangeAdaptor): Use __maybe_empty_t. (transform_view, take_view, take_while_view, elements_view): Use __maybe_const_t. (join_view, split_view): Use both. 2020-02-25 Patrick Palka LWG 3397 basic_istream_view::iterator should not provide iterator_category * include/std/ranges (basic_istream_view:_Iterator::iterator_category): Rename to ... (basic_istream_view:_Iterator::iterator_concept): ... this. * testsuite/std/ranges/istream_view.cc: Augment test. LWG 3325 Constrain return type of transformation function for transform_view * include/std/ranges (transform_view): Constrain the return type of the transformation function as per LWG 3325. * testsuite/std/ranges/adaptors/lwg3325_neg.cc: New test. LWG 3313 join_view::_Iterator::operator-- is incorrectly constrained * include/std/ranges (join_view::_Iterator::operator--): Require that range_reference_t<_Base> models common_range. * testsuite/std/ranges/adaptors/lwg3313_neg.cc: New test. LWG 3301 transform_view::_Iterator has incorrect iterator_category * include/std/ranges (transform_view::_Iterator::_S_iter_cat): Adjust determination of iterator_category as per LWG 3301. * testsuite/std/ranges/adaptors/transform.cc: Augment test. LWG 3292 iota_view is under-constrained * include/std/ranges (iota_view): Require that _Winc models semiregular as per LWG 3292. * testsuite/std/ranges/iota/lwg3292_neg.cc: New test. 2020-02-25 Jonathan Wakely * include/bits/ranges_algobase.h (__copy_or_move): Do not use memmove during constant evaluation. Call __builtin_memmove directly instead of __memmove. (__copy_or_move_backward): Likewise. * include/bits/stl_algobase.h (__memmove): Remove. (__copy_move::__copy_m) (__copy_move_backward::__copy_m): Use __builtin_memmove directly instead of __memmove. (__copy_move_a2): Do not use memmove during constant evaluation. (__copy_move_backward_a2): Use _IsMove constant to select correct __copy_move_backward specialization. * testsuite/25_algorithms/copy_backward/constexpr.cc: Check for copies begin turned into moves during constant evaluation. * testsuite/25_algorithms/move_backward/93872.cc: Add test left out of previous commit. PR libstdc++/93872 * include/bits/stl_algobase.h (__memmove): Cast away const before doing move assignment. * testsuite/25_algorithms/move/93872.cc: New test. * testsuite/25_algorithms/move_backward/93872.cc: New test. 2020-02-24 Patrick Palka PR libstdc++/93884 * include/bits/ranges_algobase.h (__copy_or_move, __copy_or_move_backward): Don't inspect the iter_value_t of the output iterator, instead inspect its iterator_traits directly. * include/bits/stl_iterator.h (back_insert_iterator::container): Conditionally initialize. (back_insert_iterator::difference_type): Conditionally define. (back_insert_iterator::back_insert_iterator): Conditionally define this default constructor. (front_insert_iterator::container): Conditionally initialize. (front_insert_iterator::difference_type): Conditionally define. (front_insert_iterator::front_insert_iterator): Conditionally define this default constructor. * 24_iterators/back_insert_iterator/pr93884.cc: New test. * 24_iterators/front_insert_iterator/pr93884.cc: New test. P0769R2 Add shift to * include/bits/ranges_algo.h (shift_left, shift_right): New. * testsuite/25_algorithms/shift_left/1.cc: New test. * testsuite/25_algorithms/shift_right/1.cc: New test. 2020-02-24 Jonathan Wakely * include/bits/stream_iterator.h (istream_iterator(default_sentinel_t)): Make noexcept-specifier conditional. * testsuite/24_iterators/istream_iterator/cons/sentinel.cc: Check noexcept-specifier. * include/bits/stream_iterator.h (istream_iterator(default_sentinel_t)): Add constructor. (operator==(istream_iterator, default_sentinel_t)): Add operator. (ostream_iterator::difference_type): Define to ptrdiff_t for C++20. * include/bits/streambuf_iterator.h (istreambuf_iterator(default_sentinel_t)): Add constructor. (operator==(istreambuf_iterator, default_sentinel_t)): Add operator. * testsuite/24_iterators/istream_iterator/cons/sentinel.cc: New test. * testsuite/24_iterators/istream_iterator/sentinel.cc: New test. * testsuite/24_iterators/istreambuf_iterator/cons/sentinel.cc: New test. * testsuite/24_iterators/istreambuf_iterator/sentinel.cc: New test. * include/std/ranges (__deep_const_range, __enable_view_impl): Remove. (ranges::enable_view): Simplify (LWG 3326). * include/bits/range_access.h (ranges::enable_view): Declare. * include/bits/regex.h (__enable_view_impl): Remove partial specialization. * include/bits/stl_multiset.h (__enable_view_impl): Likewise. * include/bits/stl_set.h (__enable_view_impl): Likewise. * include/bits/unordered_set.h (__enable_view_impl): Likewise. * include/debug/multiset.h (__enable_view_impl): Likewise. * include/debug/set.h (__enable_view_impl): Likewise. * include/debug/unordered_set (__enable_view_impl): Likewise. * include/experimental/string_view (ranges::enable_view): Define partial specialization. * include/std/span (ranges::enable_view): Likewise. * include/std/string_view (ranges::enable_view): Likewise. * testsuite/std/ranges/view.cc: Check satisfaction of updated concept. 2020-02-21 Jonathan Wakely * include/std/optional (operator<=>(optional, optional)) (operator<=>(optional, nullopt), operator<=>(optional, U)): Define for C++20. * include/std/tuple (__tuple_cmp): New helper function for <=>. (operator<=>(tuple, tuple...)): Define for C++20. * include/std/variant (operator<=>(variant, variant)) (operator<=>(monostate, monostate)): Define for C++20. * testsuite/20_util/optional/relops/three_way.cc: New test. * testsuite/20_util/tuple/comparison_operators/three_way.cc: New test. * testsuite/20_util/variant/89851.cc: Move to ... * testsuite/20_util/variant/relops/89851.cc: ... here. * testsuite/20_util/variant/90008.cc: Move to ... * testsuite/20_util/variant/relops/90008.cc: ... here. * testsuite/20_util/variant/relops/three_way.cc: New test. 2020-02-20 Patrick Palka * include/std/ranges (views::__adaptor::__maybe_refwrap): New utility function. (views::__adaptor::_RangeAdaptor::operator()): Add comments. Use __maybe_refwrap to capture lvalue references by reference, and then use unwrap_reference_t to forward the by-reference captures as references. * testsuite/std/ranges/adaptors/split.cc: Augment test. * testsuite/std/ranges/adaptors/split_neg.cc: New test. * include/std/ranges (iota_view): Forward declare _Sentinel. (iota_view::_Iterator): Befriend _Sentinel. (iota_view::_Sentinel::_M_equal): New member function. (iota_view::_Sentinel::operator==): Use it. (views::_Iota::operator()): Forward __f using the correct type. * testsuite/std/ranges/access/ssize.cc (test06): Don't call views::iota with integers of different signedness, to appease iota_view's deduction guide. * testsuite/std/ranges/iota/iota_view.cc: Augment test. 2020-02-20 Jonathan Wakely * include/bits/range_access.h (ranges::begin): Reject array of incomplete type. (ranges::end, ranges::size): Require arrays to be bounded. (ranges::data): Require lvalue or borrowed_range. (ranges::iterator_t): Remove constraint. * testsuite/std/ranges/access/begin.cc: Do not check array of incomplete type. * testsuite/std/ranges/access/begin_neg.cc: New test. * testsuite/std/ranges/access/end_neg.cc: Adjust expected error. * testsuite/std/ranges/access/size_neg.cc: Adjust expected error. * testsuite/std/ranges/access/ssize.cc: Do not check array of incomplete type. * include/std/system_error (error_category::operator<=>) (operator<=>(const error_code&, const error_code&)) (operator<=>(const error_condition&, const error_condition&)): Define for C++20. * testsuite/19_diagnostics/error_category/operators/less.cc: New test. * testsuite/19_diagnostics/error_category/operators/three_way.cc: New test. * testsuite/19_diagnostics/error_code/operators/equal.cc: Remove incorrect comment. * testsuite/19_diagnostics/error_code/operators/less.cc: New test. * testsuite/19_diagnostics/error_code/operators/not_equal.cc: Remove incorrect comment. * testsuite/19_diagnostics/error_code/operators/three_way.cc: New test. * testsuite/19_diagnostics/error_condition/operators/equal.cc: Remove incorrect comment. * testsuite/19_diagnostics/error_condition/operators/less.cc: New test. * testsuite/19_diagnostics/error_condition/operators/not_equal.cc: Remove incorrect comment. * testsuite/19_diagnostics/error_condition/operators/three_way.cc: New test. * libsupc++/typeinfo (type_info::operator!=): Remove for C++20. * include/std/thread (thread::id::operator<=>): Define for C++20. * testsuite/30_threads/thread/id/70294.cc: Do not take addresses of functions in namespace std. * testsuite/30_threads/thread/id/operators_c++20.cc: New test. 2020-02-19 Patrick Palka * testsuite/std/ranges/adaptors/split.cc (test03): Don't include the null terminator of the underlying string as part of the test_range. (main): Call test03. 2020-02-19 Jonathan Wakely * include/bits/stl_iterator.h (common_iterator): Add copyable requirement (LWG 3385). * testsuite/24_iterators/headers/iterator/synopsis_c++20.cc: Adjust expected declaration. * include/std/ranges (take_while_view, drop_view, drop_while_view) (elements_view:_Iterator): Initialize data members (LWG 3364). * libsupc++/compare (three_way_comparable): Remove always-false check that should have been removed with weak_equality (P1959R0). (three_way_comparable_with): Likewise. Reorder requirements (LWG 3360). * include/std/concepts (__detail::__partially_ordered_with): Move here from . (totally_ordered, totally_ordered_with): Use __partially_ordered_with to simplify definition (LWG 3331). * libsupc++/compare (__detail::__partially_ordered_with): Move to . * include/std/concepts (totally_ordered_with): Remove redundant requirement (LWG 3329). * include/std/ranges (__detail::__convertible_to_non_slicing): New helper concept. (__detail::__pair_like_convertible_to): Remove. (__detail::__pair_like_convertible_from): Add requirements for non-slicing conversions. (subrange): Constrain constructors with __convertible_to_non_slicing. Remove constructors from pair-like types. Add new deduction guide. * testsuite/std/ranges/subrange/lwg3282_neg.cc: New test. * include/bits/iterator_concepts.h (iter_move): Add declaration to prevent unqualified lookup finding a suitable declaration (LWG 3247). * include/std/memory_resource (polymorphic_allocator::allocate) (polymorphic_allocator::allocate_object): Change type of exception to bad_array_new_length (LWG 3237). * testsuite/20_util/polymorphic_allocator/lwg3237.cc: New test. * include/std/type_traits (__cpp_lib_unwrap_ref): Define (LWG 3348). * include/std/version (__cpp_lib_unwrap_ref): Likewise. * testsuite/20_util/unwrap_reference/1.cc: Check macro. * testsuite/20_util/unwrap_reference/3.cc: New test. * include/std/numeric (midpoint(T8, T*)): Do not check for complete type during overload resolution, use static assert instead (LWG 3200). * testsuite/26_numerics/midpoint/pointer.cc: Do not test with incomplete type. * testsuite/26_numerics/midpoint/pointer_neg.cc: New test. * include/std/span (span(T (&)[N])): Use non-deduced context to prevent first parameter from interfering with class template argument deduction (LWG 3369). * testsuite/23_containers/span/deduction.cc: Add missing 'const'. * testsuite/23_containers/span/lwg3255.cc: Check for construction from rvalues. * include/std/span (span::const_iterator, span::const_reverse_iterator) (span::cbegin(), span::cend(), span::crbegin(), span::crend()): Remove (LWG 3320). * testsuite/23_containers/span/everything.cc: Replace uses of cbegin and cend. * testsuite/20_util/specialized_algorithms/destroy/constrained.cc: Likewise. * testsuite/20_util/specialized_algorithms/uninitialized_copy/ constrained.cc: Likewise. * testsuite/20_util/specialized_algorithms/ uninitialized_default_construct/constrained.cc: Likewise. * testsuite/20_util/specialized_algorithms/uninitialized_fill/ constrained.cc: Likewise. * testsuite/20_util/specialized_algorithms/uninitialized_move/ constrained.cc: Likewise. * testsuite/20_util/specialized_algorithms/ uninitialized_value_construct/constrained.cc: Likewise. * include/bits/range_access.h (range_size_t): Define alias template. * include/std/ranges (all_view): Rename to views::all_t (LWG 3335). * testsuite/std/ranges/adaptors/filter.cc: Adjust to new name. * include/std/ranges (filter_view, transform_view, take_view) (join_view, split_view, reverse_view): Remove commented-out converting constructors (LWG 3280). * include/std/memory (uninitialized_construct_using_allocator): Use std::construct_at (LWG 3321). * include/std/memory_resource (polymorphic_allocator::allocate_bytes) (polymorphic_allocator::allocate_object) (polymorphic_allocator::new_object): Add nodiscard attribute (LWG3304). LWG 3379. "safe" in several library names is misleading * include/bits/range_access.h (enable_safe_range): Rename to enable_borrowed_range. (__detail::__maybe_safe_range): Rename to __maybe_borrowed_range. (safe_range): Rename to borrowed_range. * include/bits/ranges_algo.h: Adjust to use new names. * include/bits/ranges_algobase.h: Likewise. * include/bits/ranges_uninitialized.h: Likewise. * include/std/ranges: Likewise. (safe_iterator_t): Rename to borrowed_iterator_t. (safe_subrange_t): Rename to borrowed_subrange_t. * include/std/span: Adjust to use new names. * include/std/string_view: Likewise. * include/experimental/string_view: 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/end.cc: Likewise. * testsuite/std/ranges/access/rbegin.cc: Likewise. * testsuite/std/ranges/access/rend.cc: Likewise. * testsuite/std/ranges/safe_range.cc: Likewise. * testsuite/std/ranges/safe_range_types.cc: Likewise. * testsuite/util/testsuite_iterators.h: Likewise. * include/std/ranges (tuple_element<0, const subrange>) (tuple_element<1, const subrange>): Add partial specializations (LWG 3398). * testsuite/std/ranges/subrange/tuple_like.cc: New test. * include/bits/ranges_algo.h (__find_fn, __find_first_of_fn) (__adjacent_find_fn, __remove_if_fn, __remove_copy_if_fn) (__unique_fn, __unique_copy_fn): Remove redundant conversions to bool. 2020-02-18 Patrick Palka P1983R0 Wording for GB301, US296, US292, US291, and US283 * include/std/ranges (filter_view::pred): New member function. (join_view::_Iterator::_Iterator): Remove now-redundant comment since P1983R0 fixes the highlighted issue in the same way. (join_view::_Iterator<_Const>): Add friend join_view::_Iterator. (join_view::_M_inner): Remove mutable specifier, effectively reverting the proposed wording changes of P3278. (join_view::begin): Refine the condition for when to return a const iterator. (split_view::_OuterIter::_OuterIter): Adjust constraints. * testsuite/std/ranges/adaptors/filter.cc: Test that filter_view::pred exists and works. 2020-02-18 Jonathan Wakely PR libstdc++/93818 * include/std/ranges (_RangeAdaptor): Add deduction guide. (filter_view::_Iterator): Add alias _Vp_iter and use in place of iterator_t<_Vp>. (filter_view::_Iterator::_S_iter_cat()): Add 'typename'. (transform_view::_Iterator): Add alias _Base_iter and use in place of iterator_t<_Base>. (transform_view::_Iterator::_S_iter_cat()): Add 'typename'. (join_view::_Iterator): Add _Outer_iter and _Inner_iter aliases. (join_view::_Iterator::_S_iter_cat()): Add 'typename'. (split_view::_InnerIter::_S_iter_cat()): Likewise. * testsuite/20_util/integer_comparisons/equal.cc: Fix invalid assumption that long is wider than int. * testsuite/20_util/integer_comparisons/greater_equal.cc: Likewise. * testsuite/20_util/integer_comparisons/less.cc: Likewise. * testsuite/20_util/integer_comparisons/less_equal.cc: Likewise. * testsuite/20_util/integer_comparisons/not_equal.cc: Likewise. P1976R2 Fixed-size span construction from dynamic range * include/std/span (__cpp_lib_span): Update value. (span(It, size_type), span(It, End)): Make conditionally explicit. Add assertion. (span(R&&), span(const span&)): Likewise and relax constraints. (span::first(), span::last()): Use explicit type in return statement. (as_bytes, as_writable_bytes): Likewise. * include/std/version (__cpp_lib_span): Update value. * testsuite/23_containers/span/1.cc: Check new value. * testsuite/23_containers/span/2.cc: Check new value. * testsuite/23_containers/span/explicit.cc: New test. * include/std/span (span::__is_compatible_array): Simplify alias template by using requires-clause. (span::__is_compatible_ref): New alias template for constraining constructors. (span::__is_compatible_iterator, span::__is_compatible_range): Remove. (span(It, size_type), span(It, End)): Use __is_compatible_ref. (span(T(&)[N], span(array&), span(const array&)): Remove redundant parentheses. (span(R&&)): Add missing constraints. * include/std/span (span): Reorder members and rename template parameters to match declarations in the C++2a working paper. P2116R0 Remove tuple-like protocol support from fixed-extent span * include/std/span (get, tuple_size, tuple_element): Remove. * testsuite/23_containers/span/everything.cc: Remove checks for tuple-like API. * testsuite/23_containers/span/get_neg.cc: Remove. * testsuite/23_containers/span/tuple_element_dynamic_neg.cc: Remove. * testsuite/23_containers/span/tuple_element_oob_neg.cc: Remove. * testsuite/23_containers/span/tuple_size_neg.cc: Remove. 2020-02-17 Patrick Palka P2106R0 Alternative wording for GB315 and GB316 * include/bits/ranges_algo.h (in_fun_result): New. (for_each_result, for_each_n_result): Change into an alias of in_fun_result. (in_in_result): New. (mismatch_result): Change into an alias of in_in_result. (copy_if_result): Change into an alias of in_out_result. (swap_ranges_result): Change into an alias of in_in_result. (unary_transform_result): Change into an alias of in_out_result. (in_in_out_result): New. (binary_transform_result): Change into an alias of in_in_out_result. (replace_copy_result, replace_copy_if_result, remove_copy_if_result, remove_copy_result, unique_copy_result, reverse_copy_result, rotate_copy_result, partial_sort_copy_result): Change into an alias of in_out_result. (in_out_out_result): New. (partition_copy_result, merge_result): Change into an alias of in_out_out_result. (set_union_result, set_intersection_result): Change into an alias of in_in_out_result. (set_difference_result): Change into an alias of in_out_result. (set_symmetric_difference): Change into an alias of in_in_out_result. (min_max_result): New. (minmax_result, minmax_element_result): Change into an alias of min_max_result. (in_found_result): New. (next_permutation_result, prev_permutation_result): Change into an alias of in_found_result. (__next_permutation_fn::operator(), __prev_permutation_fn::operator()): Adjust following changes to next_permutation_result and prev_permutation_result. * include/bits/ranges_algobase.h (in_out_result): New. (copy_result, move_result, move_backward_result, copy_backward_result, copy_n_result): Change into an alias of in_out_result. * include/bits/ranges_uninitialized.h (uninitialized_copy_result, uninitialized_copy_n_result, uninitialized_move_result, uninitialized_move_n_result): Likewise. * testsuite/25_algorithms/next_permutation/constrained.cc: Adjust uses of structured bindings. * testsuite/25_algorithms/prev_permutation/constrained.cc: Likewise. P1243R4 Rangify new algorithms * include/bits/ranges_algo.h (for_each_n_result, __for_each_n_fn, for_each_n, __sample_fn, sample, __clamp_fn, clamp): New. * testsuite/25_algorithms/clamp/constrained.cc: New test. * testsuite/25_algorithms/for_each/constrained.cc: Augment test. * testsuite/25_algorithms/sample/constrained.cc: New test. 2020-02-17 Jonathan Wakely P1964R2 Wording for boolean-testable * include/bits/ranges_algo.h (__find_fn, __find_first_of_fn) (__adjacent_find_fn): Cast result of predicate to bool. * include/std/concepts (__boolean): Remove. (__detail::__boolean_testable_impl, __detail::__boolean_testable): Add new helper concepts. (__detail::__weakly_eq_cmp_with, totally_ordered, totally_ordered_with) (predicate): Use __boolean_testable instead of boolean. * libsupc++/compare (__detail::__partially_ordered, _Synth3way): Likewise. P1970R2 Consistency for size() functions: Add ranges::ssize * include/bits/range_access.h (_SSize, ssize): Define for C++20. * testsuite/std/ranges/access/ssize.cc: New test. P1956R1 On the names of low-level bit manipulation functions * include/bits/hashtable_policy.h: Update comment. * include/std/bit (__ispow2, __ceil2, __floor2, __log2p1): Rename. (ispow2, ceil2, floor2, log2p1): Likewise. (__cpp_lib_int_pow2): Add feature test macro. * include/std/charconv (__to_chars_len_2): Adjust use of __log2p1. * include/std/memory (assume_aligned): Adjust use of ispow2. * include/std/version (__cpp_lib_int_pow2): Add. * libsupc++/new_opa.cc: Adjust use of __ispow2. * src/c++17/memory_resource.cc: Likewise, and for __ceil2 and __log2p1. * testsuite/17_intro/freestanding.cc: Adjust use of ispow2. * testsuite/26_numerics/bit/bit.pow.two/ceil2.cc: Rename to ... * testsuite/26_numerics/bit/bit.pow.two/bit_ceil.cc: ... here. * testsuite/26_numerics/bit/bit.pow.two/ceil2_neg.cc: Rename to ... * testsuite/26_numerics/bit/bit.pow.two/bit_ceil_neg.cc: ... here. * testsuite/26_numerics/bit/bit.pow.two/floor2.cc: Rename to ... * testsuite/26_numerics/bit/bit.pow.two/bit_floor.cc: ... here. * testsuite/26_numerics/bit/bit.pow.two/log2p1.cc: Rename to ... * testsuite/26_numerics/bit/bit.pow.two/bit_width.cc: ... here. * testsuite/26_numerics/bit/bit.pow.two/ispow2.cc: Rename to ... * testsuite/26_numerics/bit/bit.pow.two/has_single_bit.cc: ... here. * include/std/charconv: Add comment. PR libstdc++/92546 (partial) * include/bits/random.h (uniform_random_bit_generator): Move definition to . * include/bits/ranges_algo.h: Include instead of . * include/bits/ranges_algobase.h: Do not include . * include/bits/uniform_int_dist.h (uniform_random_bit_generator): Move here. * include/std/ranges: Do not include . * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error lineno. PR libstdc++/92546 (partial) * include/Makefile.am: Add new header. * include/Makefile.in: Regenerate. * include/bits/int_limits.h: New header. * include/bits/parse_numbers.h (__select_int::_Select_int): Replace numeric_limits with __detail::__int_limits. * include/std/bit (__rotl, __rotr, __countl_zero, __countl_one) (__countr_zero, __countr_one, __popcount, __ceil2, __floor2, __log2p1): Likewise. * include/std/charconv (__to_chars_8, __from_chars_binary) (__from_chars_alpha_to_num, from_chars): Likewise. * include/std/memory_resource (polymorphic_allocator::allocate) (polymorphic_allocator::allocate_object): Likewise. * include/std/string_view (basic_string_view::_S_compare): Likewise. * include/std/utility (in_range): Likewise. * testsuite/20_util/integer_comparisons/in_range_neg.cc: Adjust for extra error about incomplete type __int_limits. * testsuite/26_numerics/bit/bit.count/countl_one.cc: Include . * 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/ceil2_neg.cc: Likewise. * testsuite/26_numerics/bit/bit.pow.two/ceil2.cc: Likewise. * testsuite/26_numerics/bit/bit.pow.two/floor2.cc: Likewise. * testsuite/26_numerics/bit/bit.pow.two/ispow2.cc: Likewise. * testsuite/26_numerics/bit/bit.pow.two/log2p1.cc: Likewise. * testsuite/26_numerics/bit/bit.rotate/rotl.cc: Likewise. * testsuite/26_numerics/bit/bit.rotate/rotr.cc: Likewise. * python/libstdcxx/v6/printers.py (StdCmpCatPrinter.to_string): Update value for partial_ordering::unordered. * include/bits/iterator_concepts.h (indirectly_copyable_storable): Add const-qualified expression variations. * include/std/concepts (copyable): Likewise. * include/std/type_traits (__is_standard_integer): New helper trait. * include/std/utility (cmp_equal, cmp_not_equal, cmp_less, cmp_greater) (cmp_less_equal, cmp_greater_equal, in_range): Define for C++20. * include/std/version (__cpp_lib_integer_comparison_functions): Define. * testsuite/20_util/integer_comparisons/1.cc: New test. * testsuite/20_util/integer_comparisons/2.cc: New test. * testsuite/20_util/integer_comparisons/equal.cc: New test. * testsuite/20_util/integer_comparisons/equal_neg.cc: New test. * testsuite/20_util/integer_comparisons/greater_equal.cc: New test. * testsuite/20_util/integer_comparisons/greater_equal_neg.cc: New test. * testsuite/20_util/integer_comparisons/greater_neg.cc: New test. * testsuite/20_util/integer_comparisons/in_range.cc: New test. * testsuite/20_util/integer_comparisons/in_range_neg.cc: New test. * testsuite/20_util/integer_comparisons/less.cc: New test. * testsuite/20_util/integer_comparisons/less_equal.cc: New test. * testsuite/20_util/integer_comparisons/less_equal_neg.cc: New test. * testsuite/20_util/integer_comparisons/less_neg.cc: New test. * testsuite/20_util/integer_comparisons/not_equal.cc: New test. * testsuite/20_util/integer_comparisons/not_equal_neg.cc: New test. 2020-02-16 Patrick Palka * include/bits/ranges_algo.h (__lexicographical_compare_fn::operator()): Move code after an early exit constexpr if to under an else branch. * include/bits/ranges_algobase.h (__equal_fn::operator()): Likewise. 2020-02-15 Patrick Palka * include/bits/ranges_algo.h: Adjust whitespace and formatting. * include/bits/ranges_algobase.h: Likewise. * include/bits/ranges_uninitialized.h: Likewise. * include/bits/ranges_algo.h: (adjacent_find, all_of, any_of, binary_search, copy_if, count, count_if, equal_range, find, find_end, find_first_of, find_if, find_if_not, for_each, generate, generate_n, includes, inplace_merge, is_heap, is_heap_until, is_partitioned, is_permutation, is_sorted, is_sorted_until, lexicographical_compare, lower_bound, make_heap, max, max_element, merge, min, min_element, minmax, minmax_element, mismatch, next_permutation, none_of, nth_element, partial_sort, partial_sort_copy, partition, partition_copy, partition_point, pop_heap, prev_permutation, push_heap, remove, remove_copy, remove_copy_if, remove_if, replace, replace_copy, replace_copy_if, replace_if, reverse, reverse_copy, rotate, rotate_copy, search, search_n, set_difference, set_intersection, set_symmetric_difference, set_union, shuffle, sort, sort_heap, stable_partition, stable_sort, swap_ranges, transform, unique, unique_copy, upper_bound): Convert into function objects. * include/bits/ranges_algobase.h: (equal, copy, move, copy_n, fill_n, fill, move_backward, copy_backward): Likewise. * include/bits/ranges_uninitialized.h (uninitialized_default_construct, uninitialized_default_construct_n, uninitialized_value_construct, uninitialized_value_construct_n, uninitialized_copy, uninitialized_copy_n, uninitialized_move, uninitialized_move_n, uninitialized_fill, uninitialized_fill_n, construct_at, destroy_at, destroy, destroy_n): Likewise. * include/bits/ranges_algo.h (ranges::__find_end): Fold into ... (ranges::find_end): ... here. (ranges::__lexicographical_compare): Fold into ... (ranges::lexicographical_compare): ... here. * include/bits/ranges_algobase.h (ranges::__equal): Fold into ... (ranges::equal): ... here. 2020-02-15 Jonathan Wakely * include/bits/erase_if.h (__cpp_lib_erase_if): Define to 202002L. * include/std/deque: Likewise. * include/std/forward_list: Likewise. * include/std/list: Likewise. * include/std/string: Likewise. * include/std/vector: Likewise. * include/std/version: Likewise. * testsuite/23_containers/deque/erasure.cc: Test for new value. * testsuite/23_containers/forward_list/erasure.cc: Likewise. * testsuite/23_containers/list/erasure.cc: Likewise. * testsuite/23_containers/map/erasure.cc: Likewise. * testsuite/23_containers/set/erasure.cc: Likewise. * testsuite/23_containers/unordered_map/erasure.cc: Likewise. * testsuite/23_containers/unordered_set/erasure.cc: Likewise. * testsuite/23_containers/vector/erasure.cc: Likewise. 2020-02-15 Jonathan Wakely * include/bits/random.h (uniform_random_bit_generator): Require min() and max() to be constant expressions and min() to be less than max(). * testsuite/26_numerics/random/concept.cc: Check additional cases. * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error lineno. 2020-02-13 Patrick Palka * include/Makefile.am: Add . * include/Makefile.in: Regenerate. * include/bits/ranges_uninitialized.h: New header. * include/std/memory: Include it. * testsuite/20_util/specialized_algorithms/destroy/constrained.cc: New test. * .../uninitialized_copy/constrained.cc: New test. * .../uninitialized_default_construct/constrained.cc: New test. * .../uninitialized_fill/constrained.cc: New test. * .../uninitialized_move/constrained.cc: New test. * .../uninitialized_value_construct/constrained.cc: New test. * include/Makefile.am: Add bits/ranges_algobase.h * include/Makefile.in: Regenerate. * bits/ranges_algo.h: Include and refactor existing #includes. (__detail::__is_normal_iterator, __detail::is_reverse_iterator, __detail::__is_move_iterator, copy_result, move_result, __equal, equal, copy_result, move_result, move_backward_result, copy_backward_result, __copy_or_move_backward, __copy_or_move, copy, move, copy_backward, move_backward, copy_n_result, copy_n, fill_n, fill): Split out into ... * bits/range_algobase.h: ... this new header. 2020-02-12 Patrick Palka LWG 3389 and LWG 3390 * include/bits/stl_iterator.h (move_move_iterator): Use std::move when constructing the move_iterator with __i. (counted_iterator::counted_iterator): Use std::move when initializing M_current with __i. * testsuite/24_iterators/counted_iterator/lwg3389.cc: New test. * testsuite/24_iterators/move_iterator/lwg3390.cc: New test. 2020-02-12 Sandra Loosemore PR libstdc++/79193 PR libstdc++/88999 * configure: Regenerated. 2020-02-12 François Dumont * include/bits/hashtable.h (_Hashtable<>(_Hashtable&&, std::allocator_type&)): Add missing std namespace qualification to forward call. 2020-02-09 Jonathan Wakely * testsuite/20_util/function_objects/range.cmp/equal_to.cc: Fix comment. * testsuite/20_util/function_objects/range.cmp/less.ccL Likewise. * include/std/ranges: Fix non-ASCII characters in comment. * include/bits/range_cmp.h (__detail::__eq_builtin_ptr_cmp): Require equality comparison to be valid and return bool. (__detail::__less_builtin_ptr_cmp): Likewise for less-than comparison. * testsuite/20_util/function_objects/range.cmp/equal_to.cc: Check type with ambiguous conversion to fundamental types. * testsuite/20_util/function_objects/range.cmp/less.cc: Likewise. 2020-02-07 Jonathan Wakely * include/bits/iterator_concepts.h (iter_difference_t, iter_value_t): Use remove_cvref_t. (readable_traits): Rename to indirectly_readable_traits. (readable): Rename to indirectly_readable. (writable): Rename to indirectly_writable. (__detail::__iter_exchange_move): Do not use remove_reference_t. (indirectly_swappable): Adjust requires expression parameter types. expression. * include/bits/ranges_algo.h (ranges::transform, ranges::replace) (ranges::replace_if, ranges::generate_n, ranges::generate) (ranges::remove): Use new name for writable. * include/bits/stl_iterator.h (__detail::__common_iter_has_arrow): Use new name for readable. * include/ext/pointer.h (readable_traits<_Pointer_adapter

>): Use new name for readable_traits. * testsuite/24_iterators/associated_types/readable.traits.cc: Likewise. * testsuite/24_iterators/indirect_callable/projected.cc: Adjust for new definition of indirectly_readable. * include/bits/stl_iterator.h (__detail::__common_iter_ptr): Change to take parameters of common_iterator, instead of the common_iterator type itself. Fix argument for __common_iter_has_arrow constraint. (iterator_traits>::pointer): Adjust. 2020-02-07 Jonathan Wakely * include/std/ranges (iota_view): Add braces to prevent -Wempty-body warning. (basic_istream_view::_Iterator::operator++()): Add missing return. 2020-02-07 Patrick Palka * include/bits/ranges_algo.h: Remove extraneous &&. * include/std/ranges (ranges::__detail::__stream_extractable, ranges::basic_istream_view, ranges::istream_view): Define. * testsuite/std/ranges/istream_view: New test. Implement C++20 range adaptors * include/std/ranges: Include and . (subrange::_S_store_size): Mark as const instead of constexpr to avoid what seems to be a bug in GCC. (__detail::__box): Give it defaulted copy and move constructors. (ranges::views::_Single::operator()): Mark constexpr. (ranges::views::_Iota::operator()): Mark constexpr. (__detail::Empty): Define. (ranges::views::__closure::_RangeAdaptor, ranges::views::__closure::_RangeAdaptorClosure, ref_view, all_view, ranges::views::all, ranges::__detail::find_if, ranges::__detail::find_if_not, ranges::__detail::mismatch, ranges::detail::min, filter_view, ranges::views::filter, transform_view, ranges::views::transform, take_view, ranges::views::take, take_while_view, ranges::views::take_while, drop_view, ranges::views::drop, join_view, ranges::views::join, __detail::require_constant, __detail::tiny_range, split_view, ranges::views::split, ranges::views::_Counted, ranges::views::counted, common_view, ranges::views::common, reverse_view, ranges::views::reverse, ranges::views::__detail::__is_reversible_subrange, ranges::views::__detail::__is_reverse_view, reverse_view, ranges::views::reverse, __detail::__has_tuple_element, elements_view, ranges::views::elements, ranges::views::keys, ranges::views::values): Define. (views): Alias for ranges::views. (tuple_size>, tuple_element<0, ranges::subrange>, tuple_element<1, ranges::subrange>): New partial specializations. * testsuite/std/ranges/adaptors/all.cc: New test. * testsuite/std/ranges/adaptors/common.cc: Likewise. * testsuite/std/ranges/adaptors/counted.cc: Likewise. * testsuite/std/ranges/adaptors/drop.cc: Likewise. * testsuite/std/ranges/adaptors/drop_while.cc: Likewise. * testsuite/std/ranges/adaptors/elements.cc: Likewise. * testsuite/std/ranges/adaptors/filter.cc: Likewise. * testsuite/std/ranges/adaptors/join.cc: Likewise. * testsuite/std/ranges/adaptors/reverse.cc: Likewise. * testsuite/std/ranges/adaptors/split.cc: Likewise. * testsuite/std/ranges/adaptors/take.cc: Likewise. * testsuite/std/ranges/adaptors/take_while.cc: Likewise. * testsuite/std/ranges/adaptors/transform.cc: Likewise. 2020-02-07 Jonathan Wakely * libsupc++/compare (__cmp_cat::type): Define typedef for underlying type of enumerations and comparison category types. (__cmp_cat::_Ord, __cmp_cat::_Ncmp): Add underlying type. (__cmp_cat::_Ncmp::unordered): Change value to 2. (partial_ordering::_M_value, weak_ordering::_M_value) (strong_ordering::_M_value): Change type to __cmp_cat::type. (partial_ordering::_M_is_ordered): Remove data member. (partial_ordering): Use second bit of _M_value for unordered. Adjust comparison operators. (weak_ordering::operator partial_ordering): Simplify to remove branches. (operator<=>(unspecified, weak_ordering)): Likewise. (strong_ordering::operator partial_ordering): Likewise. (strong_ordering::operator weak_ordering): Likewise. (operator<=>(unspecified, strong_ordering)): Likewise. * testsuite/18_support/comparisons/categories/partialord.cc: New test. * testsuite/18_support/comparisons/categories/strongord.cc: New test. * testsuite/18_support/comparisons/categories/weakord.cc: New test. * include/std/ranges (iota_view::_Iterator): Fix typo in name of __cpp_lib_three_way_comparison macro and use deduced return type for operator<=>. * testsuite/std/ranges/iota/iterator.cc: New test. 2020-02-07 Patrick Palka Jonathan Wakely Implement C++20 constrained algorithms * include/Makefile.am: Add new header. * include/Makefile.in: Regenerate. * include/std/algorithm: Include . * include/bits/ranges_algo.h: New file. * testsuite/25_algorithms/adjacent_find/constrained.cc: New test. * testsuite/25_algorithms/all_of/constrained.cc: New test. * testsuite/25_algorithms/any_of/constrained.cc: New test. * testsuite/25_algorithms/binary_search/constrained.cc: New test. * testsuite/25_algorithms/copy/constrained.cc: New test. * testsuite/25_algorithms/copy_backward/constrained.cc: New test. * testsuite/25_algorithms/copy_if/constrained.cc: New test. * testsuite/25_algorithms/copy_n/constrained.cc: New test. * testsuite/25_algorithms/count/constrained.cc: New test. * testsuite/25_algorithms/count_if/constrained.cc: New test. * testsuite/25_algorithms/equal/constrained.cc: New test. * testsuite/25_algorithms/equal_range/constrained.cc: New test. * testsuite/25_algorithms/fill/constrained.cc: New test. * testsuite/25_algorithms/fill_n/constrained.cc: New test. * testsuite/25_algorithms/find/constrained.cc: New test. * testsuite/25_algorithms/find_end/constrained.cc: New test. * testsuite/25_algorithms/find_first_of/constrained.cc: New test. * testsuite/25_algorithms/find_if/constrained.cc: New test. * testsuite/25_algorithms/find_if_not/constrained.cc: New test. * testsuite/25_algorithms/for_each/constrained.cc: New test. * testsuite/25_algorithms/generate/constrained.cc: New test. * testsuite/25_algorithms/generate_n/constrained.cc: New test. * testsuite/25_algorithms/heap/constrained.cc: New test. * testsuite/25_algorithms/includes/constrained.cc: New test. * testsuite/25_algorithms/inplace_merge/constrained.cc: New test. * testsuite/25_algorithms/is_partitioned/constrained.cc: New test. * testsuite/25_algorithms/is_permutation/constrained.cc: New test. * testsuite/25_algorithms/is_sorted/constrained.cc: New test. * testsuite/25_algorithms/is_sorted_until/constrained.cc: New test. * testsuite/25_algorithms/lexicographical_compare/constrained.cc: New test. * testsuite/25_algorithms/lower_bound/constrained.cc: New test. * testsuite/25_algorithms/max/constrained.cc: New test. * testsuite/25_algorithms/max_element/constrained.cc: New test. * testsuite/25_algorithms/merge/constrained.cc: New test. * testsuite/25_algorithms/min/constrained.cc: New test. * testsuite/25_algorithms/min_element/constrained.cc: New test. * testsuite/25_algorithms/minmax/constrained.cc: New test. * testsuite/25_algorithms/minmax_element/constrained.cc: New test. * testsuite/25_algorithms/mismatch/constrained.cc: New test. * testsuite/25_algorithms/move/constrained.cc: New test. * testsuite/25_algorithms/move_backward/constrained.cc: New test. * testsuite/25_algorithms/next_permutation/constrained.cc: New test. * testsuite/25_algorithms/none_of/constrained.cc: New test. * testsuite/25_algorithms/nth_element/constrained.cc: New test. * testsuite/25_algorithms/partial_sort/constrained.cc: New test. * testsuite/25_algorithms/partial_sort_copy/constrained.cc: New test. * testsuite/25_algorithms/partition/constrained.cc: New test. * testsuite/25_algorithms/partition_copy/constrained.cc: New test. * testsuite/25_algorithms/partition_point/constrained.cc: New test. * testsuite/25_algorithms/prev_permutation/constrained.cc: New test. * testsuite/25_algorithms/remove/constrained.cc: New test. * testsuite/25_algorithms/remove_copy/constrained.cc: New test. * testsuite/25_algorithms/remove_copy_if/constrained.cc: New test. * testsuite/25_algorithms/remove_if/constrained.cc: New test. * testsuite/25_algorithms/replace/constrained.cc: New test. * testsuite/25_algorithms/replace_copy/constrained.cc: New test. * testsuite/25_algorithms/replace_copy_if/constrained.cc: New test. * testsuite/25_algorithms/replace_if/constrained.cc: New test. * testsuite/25_algorithms/reverse/constrained.cc: New test. * testsuite/25_algorithms/reverse_copy/constrained.cc: New test. * testsuite/25_algorithms/rotate/constrained.cc: New test. * testsuite/25_algorithms/rotate_copy/constrained.cc: New test. * testsuite/25_algorithms/search/constrained.cc: New test. * testsuite/25_algorithms/search_n/constrained.cc: New test. * testsuite/25_algorithms/set_difference/constrained.cc: New test. * testsuite/25_algorithms/set_intersection/constrained.cc: New test. * testsuite/25_algorithms/set_symmetric_difference/constrained.cc: New test. * testsuite/25_algorithms/set_union/constrained.cc: New test. * testsuite/25_algorithms/shuffle/constrained.cc: New test. * testsuite/25_algorithms/sort/constrained.cc: New test. * testsuite/25_algorithms/stable_partition/constrained.cc: New test. * testsuite/25_algorithms/stable_sort/constrained.cc: New test. * testsuite/25_algorithms/swap_ranges/constrained.cc: New test. * testsuite/25_algorithms/transform/constrained.cc: New test. * testsuite/25_algorithms/unique/constrained.cc: New test. * testsuite/25_algorithms/unique_copy/constrained.cc: New test. * testsuite/25_algorithms/upper_bound/constrained.cc: New test. 2020-02-06 Jonathan Wakely * include/bits/stl_iterator.h (__detail::__common_iter_ptr): Fix PR number in comment. Fix indentation. * include/bits/stl_algobase.h (__iter_swap, __iter_swap): Remove redundant _GLIBCXX20_CONSTEXPR. * include/std/ranges (viewable_range): Replace decay_t with remove_cvref_t (LWG 3375). 2020-02-05 Jonathan Wakely * include/bits/iterator_concepts.h (iter_reference_t) (iter_rvalue_reference_t, iter_common_reference_t, indirect_result_t): Remove workarounds for PR c++/67704. * testsuite/24_iterators/aliases.cc: New test. 2020-02-05 Patrick Palka * include/bits/stl_iterator.h (move_iterator::move_iterator): Move __i when initializing _M_current. (move_iterator::base): Split into two overloads differing in ref-qualifiers as in P1207R4 for C++20. 2020-02-04 Jonathan Wakely * include/std/functional (_GLIBCXX_NOT_FN_CALL_OP): Un-define after use. PR libstdc++/93562 * include/bits/unique_ptr.h (__uniq_ptr_impl::swap): Define. (unique_ptr::swap, unique_ptr::swap): Call it. * testsuite/20_util/unique_ptr/modifiers/93562.cc: New test. 2020-02-01 Andrew Burgess * configure: Regenerate. 2020-01-31 Patrick Palka * testsuite/24_iterators/range_operations/distance.cc: Do not assume test_range::end() returns the same type as test_range::begin(). * testsuite/24_iterators/range_operations/next.cc: Likewise. * testsuite/24_iterators/range_operations/prev.cc: Likewise. * testsuite/util/testsuite_iterators.h (__gnu_test::test_range::end): Always return a sentinel. 2020-01-29 Jonathan Wakely PR libstdc++/92895 * include/std/stop_token (stop_token::stop_possible()): Call new _M_stop_possible() function. (stop_token::stop_requested()): Do not use stop_possible(). (stop_token::binary_semaphore): New class, as temporary stand-in for std::binary_semaphore. (stop_token::_Stop_cb::_M_callback): Add noexcept to type. (stop_token::_Stop_cb::_M_destroyed, stop_token::_Stop_cb::_M_done): New data members for symchronization with stop_callback destruction. (stop_token::_Stop_cb::_Stop_cb): Make non-template. (stop_token::_Stop_cb::_M_linked, stop_token::_Stop_cb::_S_execute): Remove. (stop_token::_Stop_cb::_M_run): New member function. (stop_token::_Stop_state::_M_stopped, stop_token::_Stop_state::_M_mtx): Remove. (stop_token::_Stop_state::_M_owners): New data member to track reference count for ownership. (stop_token::_Stop_state::_M_value): New data member combining a spinlock, the stop requested flag, and the reference count for associated stop_source objects. (stop_token::_Stop_state::_M_requester): New data member for synchronization with stop_callback destruction. (stop_token::_Stop_state::_M_stop_possible()): New member function. (stop_token::_Stop_state::_M_stop_requested()): Inspect relevant bit of _M_value. (stop_token::_Stop_state::_M_add_owner) (stop_token::_Stop_state::_M_release_ownership) (stop_token::_Stop_state::_M_add_ssrc) (stop_token::_Stop_state::_M_sub_ssrc): New member functions for updating reference counts. (stop_token::_Stop_state::_M_lock, stop_token::_Stop_state::_M_unlock) (stop_token::_Stop_state::_M_lock, stop_token::_Stop_state::_M_unlock) (stop_token::_Stop_state::_M_try_lock) (stop_token::_Stop_state::_M_try_lock_and_stop) (stop_token::_Stop_state::_M_do_try_lock): New member functions for managing spinlock. (stop_token::_Stop_state::_M_request_stop): Use atomic operations to read and update state. Release lock while running callbacks. Use new data members to synchronize with callback destruction. (stop_token::_Stop_state::_M_remove_callback): Likewise. (stop_token::_Stop_state::_M_register_callback): Use atomic operations to read and update state. (stop_token::_Stop_state_ref): Handle type to manage _Stop_state, replacing shared_ptr. (stop_source::stop_source(const stop_source&)): Update reference count. (stop_source::operator=(const stop_source&)): Likewise. (stop_source::~stop_source()): Likewise. (stop_source::stop_source(stop_source&&)): Define as defaulted. (stop_source::operator=(stop_source&&)): Establish postcondition on parameter. (stop_callback): Enforce preconditions on template parameter. Replace base class with data member of new _Cb_impl type. (stop_callback::stop_callback(const stop_token&, Cb&&)) (stop_callback::stop_callback(stop_token&&, Cb&&)): Fix TOCTTOU race. (stop_callback::_Cb_impl): New type wrapping _Callback member and defining the _S_execute member function. * testsuite/30_threads/stop_token/stop_callback/deadlock-mt.cc: New test. * testsuite/30_threads/stop_token/stop_callback/deadlock.cc: New test. * testsuite/30_threads/stop_token/stop_callback/destroy.cc: New test. * testsuite/30_threads/stop_token/stop_callback/destructible_neg.cc: New test. * testsuite/30_threads/stop_token/stop_callback/invocable_neg.cc: New test. * testsuite/30_threads/stop_token/stop_callback/invoke.cc: New test. * testsuite/30_threads/stop_token/stop_source/assign.cc: New test. * testsuite/30_threads/stop_token/stop_token/stop_possible.cc: New test. * libsupc++/compare (__detail::__3way_builtin_ptr_cmp): Use three_way_comparable_with. (__detail::__3way_cmp_with): Remove workaround for fixed bug. (compare_three_way::operator()): Remove redundant constraint from requires-clause. (__detail::_Synth3way::operator()): Use three_way_comparable_with instead of workaround. * testsuite/18_support/comparisons/object/93479.cc: Prune extra output due to simplified constraints on compare_three_way::operator(). PR libstdc++/93479 * libsupc++/compare (__3way_builtin_ptr_cmp): Require <=> to be valid. * testsuite/18_support/comparisons/object/93479.cc: New test. * testsuite/std/ranges/access/end.cc: Do not assume test_range::end() returns the same type as test_range::begin(). Add comments. * testsuite/std/ranges/access/rbegin.cc: Likewise. * testsuite/std/ranges/access/rend.cc: Likewise. * testsuite/std/ranges/range.cc: Do not assume the sentinel for test_range is the same as its iterator type. * testsuite/util/testsuite_iterators.h (test_range::sentinel): Add operator- overloads to satisfy sized_sentinel_for when the iterator satisfies random_access_iterator. 2020-01-28 Jonathan Wakely PR libstdc++/93470 * include/bits/refwrap.h (reference_wrapper::operator()): Restrict static assertion to object types. PR libstdc++/93325 * acinclude.m4 (GLIBCXX_ENABLE_LIBSTDCXX_TIME): Use AC_SEARCH_LIBS for clock_gettime instead of explicit glibc version check. * configure: Regenerate. 2020-01-28 Martin Liska PR libstdc++/93478 * include/std/atomic: Fix typo. * include/std/optional: Likewise. 2020-01-27 Andrew Burgess * configure: Regenerate. 2020-01-27 Jonathan Wakely PR libstdc++/93426 * include/std/span (span): Fix deduction guide. * testsuite/23_containers/span/deduction.cc: New test. 2020-01-24 Jonathan Wakely * libsupc++/compare (__cmp_cat::_Eq): Remove enumeration type. (__cmp_cat::_Ord::equivalent): Add enumerator. (__cmp_cat::_Ord::_Less, __cmp_cat::_Ord::_Greater): Rename to less and greater. (partial_ordering, weak_ordering, strong_ordering): Remove constructors taking __cmp_cat::_Eq parameters. Use renamed enumerators. 2020-01-24 Maciej W. Rozycki * acinclude.m4: Handle `--with-toolexeclibdir='. * Makefile.in: Regenerate. * aclocal.m4: Regenerate. * configure: Regenerate. * doc/Makefile.in: Regenerate. * include/Makefile.in: Regenerate. * libsupc++/Makefile.in: Regenerate. * po/Makefile.in: Regenerate. * python/Makefile.in: Regenerate. * src/Makefile.in: Regenerate. * src/c++11/Makefile.in: Regenerate. * src/c++17/Makefile.in: Regenerate. * src/c++98/Makefile.in: Regenerate. * src/filesystem/Makefile.in: Regenerate. * testsuite/Makefile.in: Regenerate. 2020-01-23 Alexandre Oliva * crossconfig.m4 (GLIBCXX_CHECK_MATH_DECL): Reject macros. * configure: Rebuild. * testsuite/27_io/fpos/mbstate_t/1.cc: Zero-init mbstate_t. 2020-01-23 Jonathan Wakely PR libstdc++/91947 * include/Makefile.am (${host_builddir}/largefile-config.h): Simplify rule. * include/Makefile.in: Regenerate. 2020-01-20 Jonathan Wakely * doc/xml/faq.xml: Fix grammar. * doc/xml/manual/appendix_contributing.xml: Improve instructions. * doc/xml/manual/spine.xml: Update copyright years. * doc/html/*: Regenerate. 2020-01-19 Eric S. Raymond * doc/xml/faq.xml: Update for SVN -> Git transition. * doc/xml/manual/appendix_contributing.xml: Likewise. * doc/xml/manual/status_cxx1998.xml: Likewise. * doc/xml/manual/status_cxx2011.xml: Likewise. * doc/xml/manual/status_cxx2014.xml: Likewise. * doc/xml/manual/status_cxx2017.xml: Likewise. * doc/xml/manual/status_cxx2020.xml: Likewise. * doc/xml/manual/status_cxxtr1.xml: Likewise. * doc/xml/manual/status_cxxtr24733.xml: Likewise. 2020-01-18 Iain Sandoe * include/Makefile.am: Add coroutine to the std set. * include/Makefile.in: Regenerated. * include/std/coroutine: New file. 2020-01-17 Jonathan Wakely PR libstdc++/92376 * include/bits/c++config: Only do PSTL config when the header is present, to fix freestanding. * libsupc++/new_opa.cc [!_GLIBCXX_HOSTED]: Declare allocation functions if they were detected by configure. 2020-01-16 Kai-Uwe Eckhardt Matthew Bauer Jonathan Wakely PR bootstrap/64271 (partial) * config/os/bsd/netbsd/ctype_base.h (ctype_base::mask): Change type to unsigned short. (ctype_base::alpha, ctype_base::digit, ctype_base::xdigit) (ctype_base::print, ctype_base::graph, ctype_base::alnum): Sync definitions with NetBSD upstream. (ctype_base::blank): Use _CTYPE_BL. * config/os/bsd/netbsd/ctype_configure_char.cc (_C_ctype_): Remove Declaration. (ctype::classic_table): Use _C_ctype_tab_ instead of _C_ctype_. (ctype::do_toupper, ctype::do_tolower): Cast char parameters to unsigned char. * config/os/bsd/netbsd/ctype_inline.h (ctype::is): Likewise. 2020-01-16 François Dumont PR libstdc++/91263 * include/bits/hashtable.h (_Hashtable<>): Make _Equality<> friend. * include/bits/hashtable_policy.h: Include . (_Equality_base): Remove. (_Equality<>::_M_equal): Review implementation. Use std::is_permutation. * testsuite/23_containers/unordered_multiset/operators/1.cc (Hash, Equal, test02, test03): New. * testsuite/23_containers/unordered_set/operators/1.cc (Hash, Equal, test02, test03): New. 2020-01-15 Jonathan Wakely PR libstdc++/93267 * include/bits/iterator_concepts.h (__max_diff_type, __max_size_type): Move here from and define using __int128 when available. (__is_integer_like, __is_signed_integer_like): Move here from . (weakly_incrementable): Use __is_signed_integer_like. * include/bits/range_access.h (__max_diff_type, __max_size_type) (__is_integer_like, __is_signed_integer_like): Move to . (__make_unsigned_like_t): Move here from . * include/std/ranges (__make_unsigned_like_t): Move to . (iota_view): Replace using-directive with using-declarations. * testsuite/std/ranges/iota/93267.cc: New test. * testsuite/std/ranges/iota_view.cc: Move to new 'iota' sub-directory. 2020-01-13 Jonathan Wakely PR libstdc++/93244 * include/bits/fs_path.h (path::generic_string) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Convert root-dir to forward-slash. * testsuite/27_io/filesystem/path/generic/generic_string.cc: Check root-dir is converted to forward slash in generic pathname. * testsuite/27_io/filesystem/path/generic/utf.cc: New test. * testsuite/27_io/filesystem/path/generic/wchar_t.cc: New test. PR libstdc++/58605 * include/bits/atomic_base.h (__cpp_lib_atomic_value_initialization): Define. (__atomic_flag_base, __atomic_base, __atomic_base<_PTp*>) (__atomic_float): Add default member initializer for C++20. * include/std/atomic (atomic): Likewise. (atomic::atomic()): Remove noexcept-specifier on default constructor. * include/std/version (__cpp_lib_atomic_value_initialization): Define. * 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/cons/value_init.cc: New test. * testsuite/29_atomics/atomic_flag/cons/value_init.cc: New test. * testsuite/29_atomics/atomic_flag/requirements/trivial.cc: Adjust expected result for is_trivially_default_constructible. * testsuite/29_atomics/atomic_float/requirements.cc: Likewise. * testsuite/29_atomics/atomic_float/value_init.cc: New test. * 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/cons/value_init.cc * testsuite/29_atomics/atomic_integral/requirements/trivial.cc: Adjust expected results for is_trivially_default_constructible. * testsuite/util/testsuite_common_types.h (has_trivial_dtor): Add new test generator. 2020-01-10 Jonathan Wakely * testsuite/util/testsuite_iterators.h: Improve comment. * testsuite/25_algorithms/equal/deque_iterators/1.cc: Don't use C++11 initialization syntax. PR libstdc++/92285 * include/bits/streambuf_iterator.h (istreambuf_iterator): Make type of base class independent of __cplusplus value. [__cplusplus < 201103L] (istreambuf_iterator::reference): Override the type defined in the base class * testsuite/24_iterators/istreambuf_iterator/92285.cc: New test. * testsuite/24_iterators/istreambuf_iterator/requirements/ base_classes.cc: Adjust expected base class for C++98. 2020-01-09 Olivier Hainque * doc/xml/manual/appendix_contributing.xml: Document _C2 as a reserved identifier, by VxWorks. * include/bits/stl_map.h: Rename _C2 template typenames as _Cmp2. * include/bits/stl_multimap.h: Likewise. 2020-01-09 Jonathan Wakely * include/ext/extptr_allocator.h (_ExtPtr_allocator::operator==) (_ExtPtr_allocator::operator!=): Add missing const qualifiers. * include/ext/pointer.h (readable_traits<_Pointer_adapter>): Add partial specialization to disambiguate the two constrained specializations. * include/experimental/type_traits (experimental::is_pod_v): Disable -Wdeprecated-declarations warnings around reference to std::is_pod. * include/std/type_traits (is_pod_v): Likewise. * testsuite/18_support/max_align_t/requirements/2.cc: Also check is_standard_layout and is_trivial. Do not check is_pod for C++20. * testsuite/20_util/is_pod/requirements/explicit_instantiation.cc: Add -Wno-deprecated for C++20. * testsuite/20_util/is_pod/requirements/typedefs.cc: Likewise. * testsuite/20_util/is_pod/value.cc: Likewise. * testsuite/experimental/type_traits/value.cc: Likewise. 2020-01-09 JeanHeyd "ThePhD" Meneide * include/bits/c++config (_GLIBCXX20_DEPRECATED): Add new macro. * include/std/type_traits (is_pod, is_pod_v): Deprecate for C++20. * testuite/20_util/is_pod/deprecated-2a.cc: New test. 2020-01-09 Jonathan Wakely PR libstdc++/93205 * include/bits/random.h (operator>>): Check stream operation succeeds. * include/bits/random.tcc (operator<<): Remove redundant __ostream_type typedefs. (operator>>): Remove redundant __istream_type typedefs. Check stream operations succeed. (__extract_params): New function to fill a vector from a stream. * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error line. PR libstdc++/93208 * config/abi/pre/gnu.ver: Add new exports. * include/std/memory_resource (memory_resource::~memory_resource()): Do not define inline. (monotonic_buffer_resource::~monotonic_buffer_resource()): Likewise. * src/c++17/memory_resource.cc (memory_resource::~memory_resource()): Define. (monotonic_buffer_resource::~monotonic_buffer_resource()): Define. * testsuite/20_util/monotonic_buffer_resource/93208.cc: New test. 2020-01-09 François Dumont PR libstdc++/92124 * include/bits/hashtable.h (_Hashtable<>::__alloc_node_gen_t): New template alias. (_Hashtable<>::__fwd_value_for): New. (_Hashtable<>::_M_assign_elements<>): Remove _NodeGenerator template parameter. (_Hashtable<>::_M_assign<>): Add _Ht template parameter. (_Hashtable<>::operator=(const _Hashtable<>&)): Adapt. (_Hashtable<>::_M_move_assign): Adapt. Replace std::move_if_noexcept with std::move. (_Hashtable<>::_Hashtable(const _Hashtable&)): Adapt. (_Hashtable<>::_Hashtable(const _Hashtable&, const allocator_type&)): Adapt. (_Hashtable<>::_Hashtable(_Hashtable&&, const allocator_type&)): Adapt. * testsuite/23_containers/unordered_set/92124.cc: New. 2020-01-08 Jonathan Wakely PR libstdc++/93201 * src/c++17/fs_ops.cc (do_remove_all): New function implementing more detailed error reporting for remove_all. Check result of recursive call before incrementing iterator. (remove_all(const path&), remove_all(const path&, error_code&)): Use do_remove_all. * src/filesystem/ops.cc (remove_all(const path&, error_code&)): Check result of recursive call before incrementing iterator. * testsuite/27_io/filesystem/operations/remove_all.cc: Check errors are reported correctly. * testsuite/experimental/filesystem/operations/remove_all.cc: Likewise. 2020-01-07 Thomas Rodgers * include/std/condition_variable (condition_variable_any::wait_on): Rename to match current draft standard. (condition_variable_any::wait_on_until): Likewise. (condition_variable_any::wait_on_for): Likewise. * testsuite/30_threads/condition_variable_any/stop_token/wait_on.cc: Adjust tests to account for renamed methods. 2020-01-07 François Dumont PR libstdc++/92124 * include/bits/stl_tree.h (_Rb_tree<>::_M_move_assign(_Rb_tree&, false_type)): Replace std::move_if_noexcept by std::move. * testsuite/23_containers/map/92124.cc: New. * testsuite/23_containers/set/92124.cc: New. 2020-01-06 Jonathan Wakely * include/std/stop_token (stop_token): Remove operator!= (LWG 3254). (stop_source): Likewise (LWG 3362). * testsuite/30_threads/stop_token/stop_source.cc: Test equality comparisons. * include/bits/stl_algobase.h (__is_byte_iter, __min_cmp) (lexicographical_compare_three_way): Do not depend on __cpp_lib_concepts. * include/std/version (__cpp_lib_three_way_comparison): Only define when __cpp_lib_concepts is defined. * libsupc++/compare (__cpp_lib_three_way_comparison): Likewise. 2020-01-03 Jonathan Wakely * include/bits/stl_algobase.h (lexicographical_compare_three_way): Only define four-argument overload when __cpp_lib_concepts is defined. 2020-01-01 John David Anglin * config/abi/post/hppa-linux-gnu/baseline_symbols.txt: Update. 2020-01-01 Jakub Jelinek Update copyright years. Copyright (C) 2020 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.