testsuite_containers.h (forward_members_unordered<>::forward_members_unordered (const...

[thirdparty/gcc.git] / libstdc++-v3 / ChangeLog

2018-10-20  François Dumont  <fdumont@gcc.gnu.org>

        * testsuite/util/testsuite_containers.h
        (forward_members_unordered<>::forward_members_unordered
        (const value_type&)): Add local_iterator pre and post increment checks.
        * config/abi/pre/gnu.ver: Add GLIBCXX_3.4.26 new symbol.

2018-10-19  Jonathan Wakely  <jwakely@redhat.com>

        * testsuite/23_containers/array/requirements/explicit_instantiation/
        3.cc: Skip test when compiled with a -std=c++NN strict mode.
        * testsuite/23_containers/deque/requirements/explicit_instantiation/
        3.cc: Likewise.
        * testsuite/23_containers/forward_list/requirements/
        explicit_instantiation/3.cc: Likewise.
        * testsuite/23_containers/list/requirements/explicit_instantiation/
        3.cc: Likewise.
        * testsuite/23_containers/map/requirements/explicit_instantiation/
        3.cc: Likewise.
        * testsuite/23_containers/multimap/requirements/explicit_instantiation/
        3.cc: Likewise.
        * testsuite/23_containers/multiset/requirements/explicit_instantiation/
        3.cc: Likewise.
        * testsuite/23_containers/set/requirements/explicit_instantiation/
        3.cc: Likewise.
        * testsuite/23_containers/unordered_map/requirements/
        explicit_instantiation/3.cc: Likewise.
        * testsuite/23_containers/unordered_multimap/requirements/
        explicit_instantiation/3.cc: Likewise.
        * testsuite/23_containers/unordered_multiset/requirements/
        explicit_instantiation/3.cc: Likewise.
        * testsuite/23_containers/unordered_set/requirements/
        explicit_instantiation/3.cc: Likewise.
        * testsuite/23_containers/vector/ext_pointer/explicit_instantiation/
        3.cc: Likewise.
        * testsuite/23_containers/vector/requirements/explicit_instantiation/
        3.cc: Likewise.

        * testsuite/23_containers/deque/48101_neg.cc: Prune additional errors
        printed when __STRICT_ANSI__ is defined.
        * testsuite/23_containers/forward_list/48101_neg.cc: Likewise.
        * testsuite/23_containers/list/48101_neg.cc: Likewise.
        * testsuite/23_containers/multiset/48101_neg.cc: Likewise.
        * testsuite/23_containers/set/48101_neg.cc: Likewise.
        * testsuite/23_containers/unordered_multiset/48101_neg.cc: Likewise.
        * testsuite/23_containers/unordered_set/48101_neg.cc: Likewise.
        * testsuite/23_containers/vector/48101_neg.cc: Likewise.

        * testsuite/23_containers/forward_list/requirements/
        explicit_instantiation/5.cc [__STRICT_ANSI__]: Don't test non-standard
        extension.
        * testsuite/23_containers/list/requirements/explicit_instantiation/
        5.cc [__STRICT_ANSI__]: Likewise.
        * testsuite/23_containers/map/requirements/explicit_instantiation/5.cc
        [__STRICT_ANSI__]: Likewise.
        * testsuite/23_containers/multimap/requirements/explicit_instantiation/
        5.cc [__STRICT_ANSI__]: Likewise.
        * testsuite/23_containers/multiset/requirements/explicit_instantiation/
        5.cc [__STRICT_ANSI__]: Likewise.
        * testsuite/23_containers/set/requirements/explicit_instantiation/5.cc
        [__STRICT_ANSI__]: Likewise.
        * testsuite/23_containers/unordered_map/requirements/debug_container.cc
        [__STRICT_ANSI__]: Likewise.
        * testsuite/23_containers/unordered_map/requirements/
        explicit_instantiation/5.cc [__STRICT_ANSI__]: Likewise.
        * testsuite/23_containers/unordered_multimap/requirements/
        explicit_instantiation/5.cc [__STRICT_ANSI__]: Likewise.
        * testsuite/23_containers/unordered_multiset/requirements/
        explicit_instantiation/5.cc [__STRICT_ANSI__]: Likewise.
        * testsuite/23_containers/unordered_set/requirements/
        explicit_instantiation/5.cc [__STRICT_ANSI__]: Likewise.

        * testsuite/20_util/scoped_allocator/1.cc: Use allocator with correct
        value type for the container.
        * testsuite/23_containers/forward_list/cons/14.cc: Likewise.
        * testsuite/23_containers/map/56613.cc: Likewise.
        * testsuite/23_containers/unordered_map/55043.cc: Likewise.
        * testsuite/23_containers/unordered_map/allocator/copy.cc: Likewise.
        * testsuite/23_containers/unordered_map/allocator/copy_assign.cc:
        Likewise.
        * testsuite/23_containers/unordered_map/allocator/minimal.cc:
        Likewise.
        * testsuite/23_containers/unordered_map/allocator/move.cc: Likewise.
        * testsuite/23_containers/unordered_map/allocator/move_assign.cc:
        Likewise.
        * testsuite/23_containers/unordered_map/allocator/noexcept.cc:
        Likewise.
        * testsuite/23_containers/unordered_map/cons/81891.cc: Likewise.
        * testsuite/23_containers/unordered_map/requirements/exception/
        basic.cc: Likewise.
        * testsuite/23_containers/unordered_map/requirements/exception/
        generation_prohibited.cc: Likewise.
        * testsuite/23_containers/unordered_map/requirements/exception/
        propagation_consistent.cc: Likewise.
        * testsuite/23_containers/unordered_multimap/55043.cc: Likewise.
        * testsuite/23_containers/unordered_multimap/allocator/copy.cc:
        Likewise.
        * testsuite/23_containers/unordered_multimap/allocator/copy_assign.cc:
        Likewise.
        * testsuite/23_containers/unordered_multimap/allocator/minimal.cc:
        Likewise.
        * testsuite/23_containers/unordered_multimap/allocator/move.cc:
        Likewise.
        * testsuite/23_containers/unordered_multimap/allocator/move_assign.cc:
        Likewise.
        * testsuite/23_containers/unordered_multimap/allocator/noexcept.cc:
        Likewise.
        * testsuite/23_containers/unordered_multimap/requirements/exception/
        basic.cc: Likewise.
        * testsuite/23_containers/unordered_multimap/requirements/exception/
        generation_prohibited.cc: Likewise.
        * testsuite/23_containers/unordered_multimap/requirements/exception/
        propagation_consistent.cc: Likewise.
        * testsuite/23_containers/unordered_multimap/requirements/
        explicit_instantiation/5.cc: Likewise.
        * testsuite/ext/malloc_allocator/sanity.cc: Likewise.

        * ext/special_functions/airy_ai/check_nan.cc: Skip test for
        non-standard extension when a strict -std=c++NN dialect is used.
        * ext/special_functions/airy_ai/check_value.cc: Likewise.
        * ext/special_functions/airy_ai/compile.cc: Likewise.
        * ext/special_functions/airy_bi/check_nan.cc: Likewise.
        * ext/special_functions/airy_bi/check_value.cc: Likewise.
        * ext/special_functions/airy_bi/compile.cc: Likewise.
        * ext/special_functions/conf_hyperg/check_nan.cc: Likewise.
        * ext/special_functions/conf_hyperg/check_value.cc: Likewise.
        * ext/special_functions/conf_hyperg/compile.cc: Likewise.
        * ext/special_functions/hyperg/check_nan.cc: Likewise.
        * ext/special_functions/hyperg/check_value.cc: Likewise.
        * ext/special_functions/hyperg/compile.cc: Likewise.

        * testsuite/23_containers/list/requirements/explicit_instantiation/
        5_c++0x.cc: Remove redundant test that is functionally identical to
        the 5.cc test.
        * testsuite/23_containers/map/requirements/explicit_instantiation/
        5_c++0x.cc: Likewise.
        * testsuite/23_containers/multimap/requirements/explicit_instantiation/
        5_c++0x.cc: Likewise.
        * testsuite/23_containers/multiset/requirements/explicit_instantiation/
        5_c++0x.cc: Likewise.
        * testsuite/23_containers/set/requirements/explicit_instantiation/
        5_c++0x.cc: Likewise.

        * include/bits/regex_executor.tcc (_Backref_matcher::_M_apply): Use
        _GLIBCXX_STD_A to refer to normal mode algorithms.
        * testsuite/28_regex/headers/regex/parallel_mode.cc: New test.
        * testsuite/28_regex/headers/regex/std_c++0x_neg.cc: Remove empty
        whitespace.

        * include/debug/map.h (map::erase(iterator)): Add abi-tag so that
        C++11 version mangles differently from incompatible C++98 version.
        * include/debug/multimap.h (multimap::erase(iterator)): Likewise.
        * include/debug/multiset.h (multiset::erase(iterator))
        (multiset::erase(const_iterator, const_iterator)): Likewise.
        * include/debug/set.h (set::erase(iterator))
        (multiset::erase(const_iterator, const_iterator)): Likewise.

2018-10-18  Jonathan Wakely  <jwakely@redhat.com>

        * testsuite/20_util/duration/cons/2.cc: Add -ffloat-store to fix
        failure when compiled without optimisation.
        * testsuite/ext/profile/mutex_extensions_neg.cc: Prune additional
        errors caused by C++17 std::pmr alias templates.

        PR libstdc++/87642
        * config/locale/gnu/monetary_members.cc
        (moneypunct<char, true>::_M_initialize_moneypunct): Use
        __narrow_multibyte_chars to convert multibyte thousands separators
        to a single char.
        * config/locale/gnu/numeric_members.cc
        (numpunct<char>::_M_initialize_numpunct): Likewise.
        (__narrow_multibyte_chars): New function.

        PR libstdc++/87641
        * include/bits/valarray_array.h (__valarray_sum): Use first element
        to initialize accumulator instead of value-initializing it.
        (__valarray_product<_Tp>): Move to ...
        * src/c++98/valarray.cc (__valarray_product<_Tp>): Here. Use first
        element to initialize accumulator.
        (__valarray_product(const valarray<size_t>&)): Remove const_cast made
        unnecessary by LWG 389.
        * testsuite/26_numerics/valarray/87641.cc: New test.

2018-10-18  François Dumont  <fdumont@gcc.gnu.org>

        Partial revert.
        2018-10-08  François Dumont  <fdumont@gcc.gnu.org>

        * include/debug/list (list<>::cbegin()): Use C++11 direct
        initialization.
        (list<>::cend()): Likewise.
        (list<>::erase(const_iterator, const_iterator)): Ensure consistent
        iterator comparisons.
        (list<>::splice(const_iterator, list&&, const_iterator,
        const_iterator)): Likewise.

        Partial revert.
        2018-10-15  François Dumont  <fdumont@gcc.gnu.org>

        * include/debug/vector (vector<>::cbegin()): Use C++11 direct
        initialization.
        (vector<>::cend()): Likewise.
        (vector<>::insert(const_iterator, const _Tp&)): Use consistent
        iterator comparison.
        (vector<>::erase(const_iterator)): Likewise.
        (vector<>::erase(const_iterator, const_iterator)): Likewise.

2018-10-17  Ville Voutilainen  <ville.voutilainen@gmail.com>

        PR libstdc++/87619
        * include/std/variant (__select_index): Fix an off-by-one.
        * testsuite/20_util/variant/87619.cc: New.

2018-10-16  Jonathan Wakely  <jwakely@redhat.com>

        * include/bits/random.h (random_device) [!_GLIBCXX_USE_DEV_RANDOM]:
        Fix default constructor to call correct function.

        * testsuite/experimental/net/internet/address/v4/creation.cc: Do not
        declare ip in global namespace, to avoid collision with struct ip
        defined in <netinet/ip.h>.

        * include/experimental/bits/net.h: Move versioned namespace macros
        to correct location.
        * include/experimental/buffer: Likewise.
        * include/experimental/executor: Likewise.
        * include/experimental/internet: Likewise.
        * include/experimental/io_context: Likewise.
        * include/experimental/netfwd: Likewise.
        * include/experimental/socket: Likewise.
        * include/experimental/timer: Likewise.

        * config.h.in: Regenerate.
        * configure: Regenerate.
        * configure.ac: Check for headers used by Networking TS.
        * include/experimental/executor: Include <condition_variable>
        instead of <mutex>.
        * include/experimental/internet: Use autoconf macros for available
        headers.  Include <sys/socket.h> for.  Remove <cstring> and use
        __builtin_memcpy and __builtin_strchr.
        (resolver_errc) [!_GLIBCXX_HAVE_NETDB_H]: Do not define.
        (address_v4::to_string, address_v6::to_string)
        [!_GLIBCXX_HAVE_ARPA_INET_H]: Likewise.
        (basic_resolver_results) [!_GLIBCXX_HAVE_NETDB_H]: Make private
        constructors report errors.
        [!_GLIBCXX_HAVE_NETINET_TCP_H] (tcp::no_delay): Do not define.
        * include/experimental/io_context: Likewise.
        * include/experimental/socket: Likewise.
        [!_GLIBCXX_HAVE_SYS_SOCKET_H, !_GLIBCXX_HAVE_POLL_H] (socket_base): Do
        not define nested types when relevant header not available.
        (__socket_impl::native_non_blocking) [!_GLIBCXX_HAVE_FCNTL_H]: Report
        an error.
        (__basic_socket_impl::open, __basic_socket_impl::local_endpoint)
        (__basic_socket_impl::bind) [!_GLIBCXX_HAVE_SYS_SOCKET_H]: Likewise.
        (__basic_socket_impl::io_control) [!_GLIBCXX_HAVE_SYS_IOCTL_H]:
        Likewise.
        (basic_socket::at_mark, basic_socket::shutdown)
        (basic_socket::remote_endpoint, basic_socket::connect)
        (basic_socket::async_connect) [!_GLIBCXX_HAVE_SYS_SOCKET_H]: Likewise.
        (basic_socket::available) [_GLIBCXX_HAVE_SYS_IOCTL_H]: Check macro
        for <sys/ioctl.h> availability.
        (basic_socket::wait) [!_GLIBCXX_HAVE_POLL_H]: Likewise.
        (basic_datagram_socket::receive, basic_datagram_socket::async_receive)
        (basic_datagram_socket::receive_from)
        (basic_datagram_socket::async_receive_from)
        (basic_datagram_socket::send, basic_datagram_socket::async_send)
        (basic_datagram_socket::send_to, basic_datagram_socket::async_send_to)
        [!_GLIBCXX_HAVE_SYS_SOCKET_H]: Likewise.
        (basic_stream_socket::receive, basic_stream_socket::async_receive)
        (basic_stream_socket::send, basic_stream_socket::async_send)
        [!_GLIBCXX_HAVE_SYS_SOCKET_H]: Likewise.
        (basic_socket_acceptor::listen, basic_socket_acceptor::accept)
        (basic_socket_acceptor::async_accept) [!_GLIBCXX_HAVE_SYS_SOCKET_H]:
        Likewise.
        (basic_socket_acceptor::wait) [!_GLIBCXX_HAVE_POLL_H]: Likewise.

        * testsuite/experimental/net/headers.cc: Remove dg-options.
        * testsuite/experimental/net/buffer/arithmetic.cc: Replace dg-options
        with dg-do using effective target.
        * testsuite/experimental/net/buffer/const.cc: Likewise.
        * testsuite/experimental/net/buffer/creation.cc: Likewise.
        * testsuite/experimental/net/buffer/mutable.cc: Likewise.
        * testsuite/experimental/net/buffer/size.cc: Likewise.
        * testsuite/experimental/net/buffer/traits.cc: Likewise.
        * testsuite/experimental/net/execution_context/use_service.cc:
        Likewise.
        * testsuite/experimental/net/internet/address/v4/comparisons.cc:
        Likewise.
        * testsuite/experimental/net/internet/address/v4/cons.cc: Likewise.
        * testsuite/experimental/net/internet/address/v4/creation.cc:
        Likewise.
        * testsuite/experimental/net/internet/address/v4/members.cc: Likewise.
        * testsuite/experimental/net/internet/resolver/base.cc: Likewise.
        * testsuite/experimental/net/internet/resolver/ops/lookup.cc:
        Likewise.
        * testsuite/experimental/net/internet/resolver/ops/reverse.cc:
        Likewise.
        * testsuite/experimental/net/timer/waitable/cons.cc: Likewise.
        * testsuite/experimental/net/timer/waitable/dest.cc: Likewise.
        * testsuite/experimental/net/timer/waitable/ops.cc: Likewise.

        * include/experimental/socket (basic_socket::at_mark): Add missing
        return.

        * acinclude.m4 (GLIBCXX_CHECK_RANDOM_TR1): Replace with ...
        (GLIBCXX_CHECK_DEV_RANDOM): New macro with more descriptive name.
        Define _GLIBCXX_USE_DEV_RANDOM as well as _GLIBCXX_USE_RANDOM_TR1.
        * config.h.in: Regenerate.
        * configure: Regenerate.
        * configure.ac: Use GLIBCXX_CHECK_DEV_RANDOM instead of
        GLIBCXX_CHECK_RANDOM_TR1.
        crossconfig.m4: Likewise.
        * include/bits/random.h (random_device): Use _GLIBCXX_USE_DEV_RANDOM
        instead of _GLIBCXX_USE_RANDOM_TR1.
        * testsuite/26_numerics/random/random_device/cons/token.cc: Likewise.

2018-10-16  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

        * testsuite/lib/dg-options.exp (add_options_for_net_ts): New proc.
        * testsuite/experimental/net/internet/address/v4/comparisons.cc:
        Add dg-add-options net_ts.
        * testsuite/experimental/net/internet/address/v4/cons.cc: Likewise.
        * testsuite/experimental/net/internet/address/v4/creation.cc: Likewise.
        * testsuite/experimental/net/internet/address/v4/members.cc: Likewise.
        * testsuite/experimental/net/internet/resolver/base.cc: Likewise.
        * testsuite/experimental/net/internet/resolver/ops/lookup.cc: Likewise.
        * testsuite/experimental/net/internet/resolver/ops/reverse.cc: Likewise.

2018-10-16  Jonathan Wakely  <jwakely@redhat.com>

        * testsuite/20_util/duration/literals/range_neg.cc: Adjust pruned
        diagnostic to account for quotes around 'constexpr'.
        * testsuite/23_containers/deque/capacity/max_size.cc: Define static
        variable.
        * testsuite/23_containers/vector/capacity/max_size.cc: Likewise.

        PR libstdc++/87618
        * config/abi/pre/gnu.ver: Fix typos in patterns for basic_stringbuf.
        * testsuite/27_io/basic_stringbuf/cons/char/default.cc: Disable
        optimisation to check constructor definition can be linked to.
        * testsuite/27_io/basic_stringbuf/cons/wchar_t/default.cc: Likewise.

2018-10-15  Jonathan Wakely  <jwakely@redhat.com>

        * testsuite/22_locale/numpunct/members/char/3.cc: Adjust test to
        account for change to glibc it_IT localedata (glibc bz#10797).

        PR libstdc++/87587
        * src/c++11/cxx11-shim_facets.cc: Suppress -Wabi warnings.

2018-10-15  François Dumont  <fdumont@gcc.gnu.org>

        * include/debug/vector (vector<>::cbegin()): Use C++11 direct
        initialization.
        (vector<>::cend()): Likewise.
        (vector<>::emplace(const_iterator, _Args&&...)): Likewise and use
        consistent iterator comparison.
        (vector<>::insert(const_iterator, size_type, const _Tp&)): Likewise.
        (vector<>::insert(const_iterator, _InputIterator, _InputIterator)):
        Likewise.
        (vector<>::erase(const_iterator)): Likewise.
        (vector<>::erase(const_iterator, const_iterator)): Likewise.

2018-10-12  Jonathan Wakely  <jwakely@redhat.com>

        Initial commit of Networking TS implementation.
        * include/Makefile.am: Add new headers.
        * include/Makefile.in: Regenerate.
        * include/experimental/bits/net.h: New header for common
        implementation details of Networking TS.
        * include/experimental/buffer: New header.
        * include/experimental/executor: New header.
        * include/experimental/internet: New header.
        * include/experimental/io_context: New header.
        * include/experimental/net: New header.
        * include/experimental/netfwd: New header.
        * include/experimental/socket: New header.
        * include/experimental/timer: New header.
        * testsuite/experimental/net/buffer/arithmetic.cc: New test.
        * testsuite/experimental/net/buffer/const.cc: New test.
        * testsuite/experimental/net/buffer/creation.cc: New test.
        * testsuite/experimental/net/buffer/mutable.cc: New test.
        * testsuite/experimental/net/buffer/size.cc: New test.
        * testsuite/experimental/net/buffer/traits.cc: New test.
        * testsuite/experimental/net/execution_context/use_service.cc: New
        test.
        * testsuite/experimental/net/headers.cc: New test.
        * testsuite/experimental/net/internet/address/v4/comparisons.cc: New
        test.
        * testsuite/experimental/net/internet/address/v4/cons.cc: New test.
        * testsuite/experimental/net/internet/address/v4/creation.cc: New
        test.
        * testsuite/experimental/net/internet/address/v4/members.cc: New
        test.
        * testsuite/experimental/net/internet/resolver/base.cc: New test.
        * testsuite/experimental/net/internet/resolver/ops/lookup.cc: New
        test.
        * testsuite/experimental/net/internet/resolver/ops/reverse.cc: New
        test.
        * testsuite/experimental/net/timer/waitable/cons.cc: New test.
        * testsuite/experimental/net/timer/waitable/dest.cc: New test.
        * testsuite/experimental/net/timer/waitable/ops.cc: New test.

        PR libstdc++/77691
        * include/experimental/memory_resource (__resource_adaptor_imp): Do
        not allocate sizes smaller than alignment when relying on guaranteed
        alignment.
        * testsuite/experimental/memory_resource/new_delete_resource.cc:
        Adjust expected number of bytes allocated for alignof(max_align_t).

2018-10-11  François Dumont  <fdumont@gcc.gnu.org>

        * include/debug/forward_list
        (forward_list<>::before_begin()): Use C++11 direct initialization.
        (forward_list<>::begin()): Likewise.
        (forward_list<>::end()): Likewise.
        (forward_list<>::cbefore_begin()): Likewise.
        (forward_list<>::cbegin()): Likewise.
        (forward_list<>::cend()): Likewise.
        (forward_list<>::emplace_after<>(const_iterator, _Args&&...)): Likewise.
        (forward_list<>::insert_after(const_iterator, const _Tp&)): Likewise.
        (forward_list<>::insert_after(const_iterator, _Tp&&)): Likewise.
        (forward_list<>::insert_after(const_iterator, size_type, const _Tp&)):
        Likewise.
        (forward_list<>::insert_after(const_iterator, initializer_list<>)):
        Likewise.
        (forward_list<>::erase_after(const_iterator)): Likewise.
        (forward_list<>::erase_after(const_iterator, const_iterator)): Likewise
        and ensure consistent iterator comparison.

        * include/bits/forward_list.h
        (_Fwd_list_iterator<>::operator==): Replace member function with inline
        friend.
        (_Fwd_list_iterator<>::operator!=): Likewise.
        (_Fwd_list_const_iterator<>::operator==): Likewise.
        (_Fwd_list_const_iterator<>::operator!=): Likewise.
        (operator==(const _Fwd_list_iterator<>&,
        const _Fwd_list_const_iterator<>&)): Remove.
        (operator!=(const _Fwd_list_iterator<>&,
        const _Fwd_list_const_iterator<>&)): Remove.
        (forward_list<>::_Node): Take typedef from base type.
        (forward_list<>::iterator): Likewise.
        (forward_list<>::const_iterator): Likewise.

2018-10-11  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/80538
        * src/c++11/thread.cc (this_thread::__sleep_for)
        [_GLIBCXX_HAVE_SLEEP]: Only call sleep for non-zero values.
        Loop while sleep call is interrupted and until steady_clock
        shows requested duration has elapsed.
        (!_GLIBCXX_HAVE_USLEEP]: Use the _GLIBCXX_HAVE_SLEEP code path, but
        avoiding the usleep call.
        * testsuite/30_threads/this_thread/60421.cc: Test repeated
        signal interruptions.

        * include/bits/allocator.h
        (operator==(const allocator<_Tp>&, const allocator<_Tp>))
        (operator!=(const allocator<_Tp>&, const allocator<_Tp>)): Replace
        with inline friends.
        * include/ext/debug_allocator.h (operator==, operator!=): Replace
        with inline friend functions that compare to rebound allocators.
        * include/ext/malloc_allocator.h (operator==, operator!=): Likewise.
        * include/ext/new_allocator.h (operator==, operator!=): Likewise.
        * testsuite/ext/debug_allocator/eq.cc: New test.
        * testsuite/ext/ext_pointer/alloc_eq.cc: New test.
        * testsuite/ext/malloc_allocator/eq.cc: New test.
        * testsuite/ext/new_allocator/eq.cc: New test.

2018-10-10  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/87544
        * include/bits/stl_vector.h (vector::_S_max_size): Limit size to
        PTRDIFF_MAX / sizeof(value_type).
        * include/ext/malloc_allocator.h (malloc_allocator::max_size):
        Likewise.
        * include/ext/new_allocator.h (new_allocator::max_size): Likewise.
        * testsuite/23_containers/vector/allocator/minimal.cc: Adjust
        expected value for max_size().
        * testsuite/23_containers/vector/capacity/87544.cc: New test.

2018-10-09  François Dumont  <fdumont@gcc.gnu.org>

        * include/bits/stl_list.h
        (_List_operator<>::operator==): Replace member function with inline
        friend.
        (_List_operator<>::operator!=): Likewise.
        (_List_const_operator<>::operator==): Likewise.
        (_List_const_operator<>::operator!=): Likewise.
        (operator==(const _List_iterator<>&, const _List_const_iterator<>&)):
        Remove.
        (operator!=(const _List_iterator<>&, const _List_const_iterator<>&)):
        Remove.

2018-10-09  Jonathan Wakely  <jwakely@redhat.com>

        * include/bits/stringfwd.h (string, wstring, u16string, u32string):
        Define typedefs outside of __cxx11 inline namespace.
        * python/libstdcxx/v6/printers.py (register_type_printers): Also
        register printers for typedefs in new location.

2018-10-08  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/87538
        * testsuite/experimental/functional/87538.cc: New test.

        PR libstdc++/87538
        * include/std/functional (_Not_fn::operator()): Check value of
        __is_nothrow_invocable as well.
        * testsuite/20_util/function_objects/not_fn/87538.cc: New test.

2018-10-08  François Dumont  <fdumont@gcc.gnu.org>

        * include/debug/list (list<>::cbegin()): Use C++11 direct
        initialization.
        (list<>::cend()): Likewise.
        (list<>::emplace<>(const_iterator, _Args&&...)): Likewise.
        (list<>::insert(const_iterator, initializer_list<>)): Likewise.
        (list<>::insert(const_iterator, size_type, const _Tp&)): Likewise.
        (list<>::erase(const_iterator, const_iterator)): Ensure consistent
        iterator comparisons.
        (list<>::splice(const_iterator, list&&, const_iterator,
        const_iterator)): Likewise.

2018-10-05  François Dumont  <fdumont@gcc.gnu.org>

        * include/bits/stl_tree.h
        (_Rb_tree_iterator<>::operator==): Make inline friend.
        (_Rb_tree_iterator<>::operator!=): Likewise.
        (_Rb_tree_const_iterator<>::operator==): Likewise.
        (_Rb_tree_const_iterator<>::operator!=): Likewise.
        (operator==(const _Rb_tree_iterator<>&,
        const _Rb_tree_const_iterator&)): Remove.
        (operator!=(const _Rb_tree_iterator<>&,
        const _Rb_tree_const_iterator&)): Remove.
        (operator==(const _Rb_tree<>&, const _Rb_tree<>&)): Make inline friend.
        (operator<(const _Rb_tree<>&, const _Rb_tree<>&)): Likewise.
        (operator!=(const _Rb_tree<>&, const _Rb_tree<>&)): Likewise and
        deprecate.
        (operator>(const _Rb_tree<>&, const _Rb_tree<>&)): Likewise.
        (operator<=(const _Rb_tree<>&, const _Rb_tree<>&)): Likewise.
        (operator>=(const _Rb_tree<>&, const _Rb_tree<>&)): Likewise.
        * include/debug/map.h (map<>::erase(const_iterator, const_iterator)):
        Compare __victim with _Base::cend().
        * include/debug/multimap.h
        (multimap<>::erase(const_iterator, const_iterator)): Likewise.
        * include/debug/set.h (set<>::erase(const_iterator, const_iterator)):
        Compare __victim with _Base::cend().
        * include/debug/multiset.h
        (multiset<>::erase(const_iterator, const_iterator)): Likewise.

2018-10-03  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/59439
        * src/c++98/locale.cc (locale::locale(const locale&)): Bypass
        reference count updates for the classic locale.
        (locale::~locale()): Likewise.
        (locale::operator=(const locale&)): Likewise.
        * src/c++98/locale_init.cc (locale::locale()): Likewise.
        (locale::global(const locale&)): Likewise.

2018-10-03  François Dumont  <fdumont@gcc.gnu.org>

        * include/debug/map.h
        (map<>::emplace<>(_Args&&...)): Use C++11 direct initialization.
        (map<>::emplace_hint<>(const_iterator, _Args&&...)): Likewise.
        (map<>::insert(value_type&&)): Likewise.
        (map<>::insert<>(_Pair&&)): Likewise.
        (map<>::insert<>(const_iterator, _Pair&&)): Likewise.
        (map<>::try_emplace): Likewise.
        (map<>::insert_or_assign): Likewise.
        (map<>::insert(node_type&&)): Likewise.
        (map<>::insert(const_iterator, node_type&&)): Likewise.
        (map<>::erase(const_iterator)): Likewise.
        (map<>::erase(const_iterator, const_iterator)): Likewise.
        * include/debug/multimap.h
        (multimap<>::emplace<>(_Args&&...)): Use C++11 direct initialization.
        (multimap<>::emplace_hint<>(const_iterator, _Args&&...)): Likewise.
        (multimap<>::insert<>(_Pair&&)): Likewise.
        (multimap<>::insert<>(const_iterator, _Pair&&)): Likewise.
        (multimap<>::insert(node_type&&)): Likewise.
        (multimap<>::insert(const_iterator, node_type&&)): Likewise.
        (multimap<>::erase(const_iterator)): Likewise.
        (multimap<>::erase(const_iterator, const_iterator)): Likewise.
        * include/debug/set.h
        (set<>::emplace<>(_Args&&...)): Use C++11 direct initialization.
        (set<>::emplace_hint<>(const_iterator, _Args&&...)): Likewise.
        (set<>::insert(value_type&&)): Likewise.
        (set<>::insert<>(const_iterator, value_type&&)): Likewise.
        (set<>::insert(const_iterator, node_type&&)): Likewise.
        (set<>::erase(const_iterator)): Likewise.
        (set<>::erase(const_iterator, const_iterator)): Likewise.
        * include/debug/multiset.h
        (multiset<>::emplace<>(_Args&&...)): Use C++11 direct initialization.
        (multiset<>::emplace_hint<>(const_iterator, _Args&&...)): Likewise.
        (multiset<>::insert<>(value_type&&)): Likewise.
        (multiset<>::insert<>(const_iterator, value_type&&)): Likewise.
        (multiset<>::insert(node_type&&)): Likewise.
        (multiset<>::insert(const_iterator, node_type&&)): Likewise.
        (multiset<>::erase(const_iterator)): Likewise.
        (multiset<>::erase(const_iterator, const_iterator)): Likewise.

2018-10-02  Marc Glisse  <marc.glisse@inria.fr>

        PR libstdc++/87258
        * include/bits/stl_bvector.h (vector::begin(), vector::cbegin()):
        Rebuild _M_start with an explicit 0 offset.

2018-10-02  Jonathan Wakely  <jwakely@redhat.com>

        * include/std/variant (__gen_vtable_impl::__visit_invoke): Call __get
        directly instead of get, as caller ensures correct index is used.
        (holds_alternative, get, get_if): Remove redundant inline specifiers.
        (_VARIANT_RELATION_FUNCTION_TEMPLATE): Likewise.

2018-10-02  Joseph Myers  <joseph@codesourcery.com>

        * testsuite/lib/libstdc++.exp (libstdc++_init): Use
        -fno-show-column in default cxxflags.

2018-10-01  Bernhard Reutner-Fischer  <aldot@gcc.gnu.org>

        * config/os/uclibc/os_defines.h (__NO_STRING_INLINES): Delete.

2018-10-01  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/xml/manual/allocator.xml: Adjust link to "Reconsidering
        Custom Memory Allocation".

2018-10-01  Jonathan Wakely  <jwakely@redhat.com>

        * doc/html/*: Regenerate.

2018-09-30  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/xml/manual/messages.xml: Switch link to www.oracle.com
        to https.

2018-09-30  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/xml/manual/policy_data_structures_biblio.xml: Update
        link to Microsoft Component Model Object Technologies.

2018-09-29  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/xml/gnu/fdl-1.3.xml: The Free Software Foundation web
        site now uses https. Also omit the unnecessary trailing slash.
        * doc/xml/gnu/gpl-3.0.xml: Ditto.

2018-09-28  François Dumont  <fdumont@gcc.gnu.org>

        * include/debug/functions.h
        (__foreign_iterator_aux3(const _Safe_iterator<>&, const _InputeIter&,
        const _InputIter&, __true_type)): Use empty() rather than begin() ==
        end().

2018-09-25  Mike Crowe  <mac@mcrowe.com>

        * include/std/condition_variable (condition_variable::wait_for): Use
        steady clock in overload that uses a predicate.

2018-09-25  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/87431
        * include/std/variant (_Variant_storage<true, _Types...>::_M_valid):
        Avoid runtime test when all alternatives are scalars and so cannot
        throw during initialization.

2018-09-25  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/xml/manual/codecvt.xml: Move link to "UTF-8 and Unicode FAQ"
        to https.

2018-09-24  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/xml/manual/policy_data_structures_biblio.xml: Update link
        to "Priority Queues and the STL".

2018-09-23  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/xml/manual/using_exceptions.xml: Move boost.orgs link to
        https.

2018-09-21  François Dumont  <fdumont@gcc.gnu.org>

        PR libstdc++/87135
        * src/c++11/hashtable_c++0x.cc (_Prime_rehash_policy::_M_next_bkt):
        Use __builtin_floor to compute _M_next_resize.
        * testsuite/23_containers/unordered_set/hash_policy/71181.cc: Adapt.
        * testsuite/23_containers/unordered_set/hash_policy/prime_rehash.cc:
        Adapt.

2018-09-21  Jonathan Wakely  <jwakely@redhat.com>

        * testsuite/26_numerics/headers/cmath/hypot-long-double.cc: Remove.
        * testsuite/26_numerics/headers/cmath/hypot.cc: Restore test for
        long double unconditionally, but use lower tolerance when
        sizeof(long double) == sizeof(double).

2018-09-20  Christophe Lyon  <christophe.lyon@linaro.org>

        * testsuite/26_numerics/headers/cmath/hypot-long-double.cc: Skip
        on arm*.

2018-09-19  Jonathan Wakely  <jwakely@redhat.com>

        * include/bits/regex_automaton.tcc (_StateSeq<_TraitsT>::_M_clone()):
        Remove __glibcxx_assert statements and use map::find instead of
        map::operator[].

2018-09-18  François Dumont  <fdumont@gcc.gnu.org>

        PR libstdc++/87135
        * src/c++11/hashtable_c++0x.cc:
        (_Prime_rehash_policy::_M_next_bkt): Return a prime no smaller than
        requested size, but not necessarily greater.
        (_Prime_rehash_policy::_M_need_rehash): Rehash only if target size is
        strictly greater than next resize threshold.
        * testsuite/23_containers/unordered_map/modifiers/reserve.cc: Adapt test
        to validate that there is no rehash as long as number of insertion is
        lower or equal to the reserved number of elements.

2018-09-18  Jonathan Wakely  <jwakely@redhat.com>

        * include/bits/unique_ptr.h (__uniq_ptr_impl): Remove static assertion
        checking invocable condition.
        (unique_ptr::~unique_ptr, unique_ptr::reset): Restore static assertion
        here, where types must be complete. Pass pointer to deleter as an
        rvalue.
        * testsuite/20_util/unique_ptr/requirements/incomplete.cc: New test.

2018-09-13  Jonathan Wakely  <jwakely@redhat.com>

        * include/std/variant (variant) [__clang__]: Limit workaround to
        Clang 7 and older.

2018-09-11  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/87278
        * include/bits/shared_ptr.h (make_shared): Use remove_cv instead of
        remove_const.
        * testsuite/20_util/shared_ptr/creation/87278.cc: New test.

        Implement LWG 2905 changes to constrain unique_ptr constructors
        * include/bits/unique_ptr.h (__uniq_ptr_impl): Add assertions to
        check deleter type.
        (unique_ptr::unique_ptr(pointer, const deleter_type&)): Add copy
        constructible constraint.
        (unique_ptr::unique_ptr(pointer, deleter_type&&)): Disable for
        deleters of reference type and add move constructible constraint.
        (unique_ptr::unique_ptr(pointer, remove_reference_t<deleter_type>&&)):
        Disable for deleters of non-reference type. Define as deleted.
        (unique_ptr<T[], D>): Likewise.
        * testsuite/20_util/unique_ptr/assign/48635_neg.cc: Replace dg-error
        directives with unstable line numbers with dg-prune-output.
        * testsuite/20_util/unique_ptr/cons/cv_qual_neg.cc: Likewise.
        * testsuite/20_util/unique_ptr/cons/lwg2905.cc: New test.
        * testsuite/20_util/unique_ptr/specialized_algorithms/swap_cxx17.cc:
        Make deleter types invocable.

2018-09-05  Jonathan Wakely  <jwakely@redhat.com>

        * libsupc++/cxxabi.h (__cxa_demangle): Clarify doxygen comment.

2018-09-03  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/78179
        * testsuite/26_numerics/headers/cmath/hypot-long-double.cc: New test
        that runs the long double part of hypot.cc.
        * testsuite/26_numerics/headers/cmath/hypot.cc: Disable long double
        tests unless TEST_HYPOT_LONG_DOUBLE is defined.

        * include/bits/stl_vector.h (vector::_Temporary_value::_M_ptr):
        Return raw pointer not allocator's pointer type.
        (vector::_Temporary_value::_M_val): Use _M_ptr.

        PR libstdc++/87194
        * include/bits/stl_map.h
        (map::map(initializer_list<value_type>, const Compare&, const Alloc&))
        (map::map(initializer_list<value_type>, const Alloc&))
        (map::map(InputIterator, InputIterator, const Alloc&))
        (map::map(InputIterator, InputIterator))
        (map::map(InputIterator, InputIterator, const Compare&, const Alloc&))
        (map::insert(InputIterator, InputIterator)):
        Call _M_insert_range_unique instead of _M_insert_unique.
        * include/bits/stl_multimap.h
        (multimap::multimap(initializer_list<value_type>, const C&, const A&))
        (multimap::multimap(initializer_list<value_type>, const A&))
        (multimap::multimap(InputIterator, InputIterator, const A&))
        (multimap::multimap(InputIterator, InputIterator))
        (multimap::multimap(InputIterator, InputIterator, const C&, const A&))
        (multimap::insert(InputIterator, InputIterator)): Call
        _M_insert_range_equal instead of _M_insert_equal.
        * include/bits/stl_multiset.h
        (multiset::multiset(InputIterator, InputIterator))
        (multiset::multiset(InputIterator, InputIterator, const C&, const A&))
        (multiset::multiset(initializer_list<value_type>, const C&, const A&))
        (multiset::multiset(initializer_list<value_type>, const A&))
        (multiset::multiset(InputIterator, InputIterator, const A&))
        (multiset::insert(InputIterator, InputIterator)): Call
        _M_insert_range_equal instead of _M_insert_equal.
        * include/bits/stl_set.h
        (set::set(InputIterator, InputIterator))
        (set::set(InputIterator, InputIterator, const Compare&, const Alloc&))
        (set::set(initializer_list<value_type>, const Compare&, const Alloc&))
        (set::set(initializer_list<value_type>, const Alloc&))
        (set::set(InputIterator, InputIterator, const Alloc&))
        (set::insert(InputIterator, InputIterator)):
        Call _M_insert_range_unique instead of _M_insert_unique.
        * include/bits/stl_tree.h
        [__cplusplus >= 201103L] (_Rb_tree::__same_value_type): New alias
        template for SFINAE constraints.
        [__cplusplus >= 201103L] (_Rb_tree::_M_insert_range_unique): Pair of
        constrained overloads that either insert or emplace, depending on
        iterator's value_type.
        [__cplusplus >= 201103L] (_Rb_tree::_M_insert_range_equal): Likewise.
        [__cplusplus < 201103L] (_Rb_tree::_M_insert_range_unique)
        (_Rb_tree::_M_insert_range_equal): New functions replacing range
        versions of _M_insert_unique and _M_insert_equal.
        (_Rb_tree::_M_insert_unique(_InputIterator, _InputIterator))
        (_Rb_tree::_M_insert_equal(_InputIterator, _InputIterator)): Remove.
        * testsuite/23_containers/map/modifiers/insert/87194.cc: New test.
        * testsuite/23_containers/multimap/modifiers/insert/87194.cc: New test.
        * testsuite/23_containers/multiset/modifiers/insert/87194.cc: New test.
        * testsuite/23_containers/set/modifiers/insert/87194.cc: New test.

        PR libstdc++/78595
        * include/bits/stl_map.h (map::insert(_Pair&&))
        (map::insert(const_iterator, _Pair&&)): Do emplace instead of insert.
        * include/bits/stl_multimap.h (multimap::insert(_Pair&&))
        (multimap::insert(const_iterator, _Pair&&)): Likewise.
        * include/bits/unordered_map.h (unordered_map::insert(_Pair&&))
        (unordered_map::insert(const_iterator, _Pair&&))
        (unordered_multimap::insert(_Pair&&))
        (unordered_multimap::insert(const_iterator, _Pair&&)): Likewise.
        * testsuite/23_containers/map/modifiers/insert/78595.cc: New test.
        * testsuite/23_containers/multimap/modifiers/insert/78595.cc: New test.
        * testsuite/23_containers/unordered_map/modifiers/78595.cc: New test.
        * testsuite/23_containers/unordered_multimap/modifiers/78595.cc: New
        test.

2018-09-02  François Dumont  <fdumont@gcc.gnu.org>

        * include/debug/safe_iterator.h
        (_Safe_iterator<_It, _Seq, _Cat>::_Self): New.
        (_Safe_iterator<_It, _Seq, std::random_access_iterator_tag>::_Self):
        New.
        (_Safe_iterator<_It, _Seq, std::random_access_iterator_tag>
        ::_OtherSelf): New.
        (_GLIBCXX_DEBUG_VERIFY_OPERANDS, _GLIBCXX_DEBUG_VERIFY_EQ_OPERANDS)
        (_GLIBCXX_DEBUG_VERIFY_REL_OPERANDS)
        (_GLIBCXX_DEBUG_VERIFY_DIST_OPERANDS): Define macros.
        (_Safe_iterator<_It, _Seq, std::random_access_iterator_tag>
        ::operator+(difference_type)): Use latters, inline as friend.
        (_Safe_iterator<_It, _Seq, std::random_access_iterator_tag>
        ::operator-(difference_type)): Likewise.
        (operator==(const _Safe_iterator<>&, const _Safe_iterator<>&)):
        Likewise.
        (operator!=(const _Safe_iterator<>&, const _Safe_iterator<>&)):
        Likewise.
        (operator<(const _Safe_iterator<>&, const _Safe_iterator<>&)): Likewise.
        (operator<=(const _Safe_iterator<>&, const _Safe_iterator<>&)):
        Likewise.
        (operator>(const _Safe_iterator<>&, const _Safe_iterator<>&)): Likewise.
        (operator>=(const _Safe_iterator<>&, const _Safe_iterator<>&)):
        Likewise.
        (operator-(const _Safe_iterator<>&, const _Safe_iterator<>&)): Likewise.
        (operator+(difference_type, const _Safe_iterator<>&)): Likewise.
        (operator-(const _Safe_iterator<>&, difference_type)): Likewise.
        * include/debug/safe_iterator.tcc
        (_Safe_iterator<>::_M_can_advance(difference_type)): Take parameter by
        copy.
        * include/debug/safe_local_iterator.h
        (_Safe_local_iterator<_It, _Seq>::_Self): New.
        (_Safe_local_iterator<_It, _Seq>::_OtherSelf): New.
        (_GLIBCXX_DEBUG_VERIFY_OPERANDS): Define macro.
        (operator==(const _Safe_local_iterator<>&,
        const _Safe_local_iterator<>&)): Use latter, inline as friend.
        (operator!=(const _Safe_local_iterator<>&,
        const _Safe_local_iterator<>&)): Likewise.
        * testsuite/util/testsuite_containers.h: Include utility.
        (struct forward_members_unordered<_Tp, bool>): Remove 2nd template
        parameter.
        (forward_members_unordered<>::forward_members_unordered(value_type&)):
        Add using namespace std::rel_ops.
        Add iterator_concept_checks on local_iterator and const_local_iterator.
        Add asserts on comparison between const_local_iterator and
        local_iterator.
        (struct forward_members_unordered<_Tp, false>): Remove partial
        specialization.
        * testsuite/23_containers/forward_list/types/1.cc: New.
        * testsuite/23_containers/list/types/1.cc: New.

2018-09-01  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/xml/manual/profile_mode.xml: Update three ieeexplore.ieee.org
        references.

2018-08-31  Sandra Loosemore  <sandra@codesourcery.com>

        * testsuite/21_strings/basic_string/inserters_extractors/wchar_t/10.cc:
        Add dg-require-fileio.
        * testsuite/21_strings/basic_string/inserters_extractors/wchar_t/11.cc:
        Likewise.
        * testsuite/21_strings/basic_string/inserters_extractors/wchar_t/5.cc:
        Likewise.
        * testsuite/21_strings/basic_string_view/inserters/wchar_t/2.cc:
        Likewise.
        * testsuite/25_algorithms/copy/streambuf_iterators/wchar_t/4.cc:
        Likewise.
        * testsuite/25_algorithms/find/istreambuf_iterators/wchar_t/2.cc:
        Likewise.
        * testsuite/27_io/basic_filebuf/close/wchar_t/12790-1.cc: Likewise.
        * testsuite/27_io/basic_filebuf/close/wchar_t/12790-2.cc: Likewise.
        * testsuite/27_io/basic_filebuf/close/wchar_t/12790-3.cc: Likewise.
        * testsuite/27_io/basic_filebuf/close/wchar_t/12790-4.cc: Likewise.
        * testsuite/27_io/basic_filebuf/seekoff/wchar_t/11543.cc: Likewise.
        * testsuite/27_io/basic_filebuf/seekoff/wchar_t/12790-1.cc:
        Likewise.
        * testsuite/27_io/basic_filebuf/seekoff/wchar_t/12790-2.cc:
        Likewise.
        * testsuite/27_io/basic_filebuf/seekoff/wchar_t/12790-3.cc:
        Likewise.
        * testsuite/27_io/basic_filebuf/seekoff/wchar_t/12790-4.cc:
        Likewise.
        * testsuite/27_io/basic_filebuf/seekpos/wchar_t/12790-1.cc:
        Likewise.
        * testsuite/27_io/basic_filebuf/seekpos/wchar_t/12790-2.cc:
        Likewise.
        * testsuite/27_io/basic_filebuf/seekpos/wchar_t/12790-4.cc:
        Likewise.
        * testsuite/27_io/basic_filebuf/underflow/wchar_t/2.cc: Likewise.
        * testsuite/27_io/basic_filebuf/underflow/wchar_t/3.cc: Likewise.
        * testsuite/27_io/basic_ifstream/cons/wchar_t/1.cc: Likewise.
        * testsuite/27_io/basic_ifstream/open/wchar_t/1.cc: Likewise.
        * testsuite/27_io/basic_istream/extractors_character/wchar_t/4.cc:
        Likewise.
        * testsuite/27_io/basic_istream/extractors_other/wchar_t/2.cc:
        Likewise.
        * testsuite/27_io/basic_istream/get/wchar_t/2.cc: Likewise.
        * testsuite/27_io/basic_istream/getline/wchar_t/5.cc: Likewise.
        * testsuite/27_io/basic_istream/ignore/wchar_t/2.cc: Likewise.
        * testsuite/27_io/basic_istream/ignore/wchar_t/3.cc: Likewise.
        * testsuite/27_io/basic_istream/seekg/wchar_t/sstream.cc: Likewise.
        * testsuite/27_io/basic_istream/tellg/wchar_t/sstream.cc: Likewise.
        * testsuite/27_io/basic_ofstream/cons/wchar_t/1.cc: Likewise.
        * testsuite/27_io/basic_ofstream/open/wchar_t/1.cc: Likewise.
        * testsuite/27_io/basic_ostream/inserters_other/wchar_t/1.cc:
        Likewise.
        * testsuite/27_io/objects/wchar_t/10.cc: Likewise.
        * testsuite/27_io/objects/wchar_t/12048-1.cc: Likewise.
        * testsuite/27_io/objects/wchar_t/12048-2.cc: Likewise.
        * testsuite/27_io/objects/wchar_t/12048-3.cc: Likewise.
        * testsuite/27_io/objects/wchar_t/12048-4.cc: Likewise.
        * testsuite/27_io/objects/wchar_t/12048-5.cc: Likewise.
        * testsuite/experimental/string_view/inserters/wchar_t/2.cc:
        Likewise.
        * testsuite/ext/stdio_sync_filebuf/wchar_t/1.cc: Likewise.

2018-08-30  Sandra Loosemore  <sandra@codesourcery.com>

        * testsuite/experimental/propagate_const/observers/1.cc: Make
        dependence on -fdelete-null-pointer-checks explicit.

2018-08-30  Jonathan Wakely  <jwakely@redhat.com>

        * include/bits/hashtable_policy.h (__clp2): Fix calculation for LLP64
        targets where sizeof(size_t) > sizeof(long). Avoid undefined shifts
        of the number of bits in the type.
        * include/std/bit (__ceil2): Avoid undefined shifts.
        * testsuite/26_numerics/bit/bit.pow.two/ceil2.cc: Test values with
        the most signifiant bit set.

        * config/abi/pre/gnu.ver: Add missing exports for mingw.

        * include/ext/pointer.h (_Pointer_adapter): Define operators for
        pointer arithmetic using long long offsets.
        * testsuite/ext/ext_pointer/1.cc: Test pointer arithmetic using
        long long values.

2018-08-29  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/31413
        * testsuite/22_locale/time_get/get_date/wchar_t/4.cc: Check D_FMT
        string for alternative format.

2018-08-28  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/87116
        * src/filesystem/std-path.cc (path::lexically_normal): When handling
        a dot-dot filename, preserve an empty final component in the iteration
        sequence.
        [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use preferred-separator for
        root-directory.
        * testsuite/27_io/filesystem/path/generation/normal.cc: Add new tests
        for more than two adjacent dot-dot filenames.
        [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Replace slashes with
        preferred-separator in expected normalized strings.

2018-08-25  Iain Sandoe  <iain@sandoe.co.uk>

        PR libstdc++/70694
        * configure.host (OPT_LDFLAGS): Don't append
        -fvisibility-inlines-hidden for newer Darwin.

2018-08-24  Marc Glisse  <marc.glisse@inria.fr>

        PR libstdc++/86822
        * libsupc++/new (operator new(size_t, nothrow_t), operator
        new[](size_t, nothrow_t), operator new(size_t, align_val_t, nothrow_t),
        operator new[](size_t, align_val_t, nothrow_t)): Add malloc attribute.

2018-08-24  Jonathan Wakely  <jwakely@redhat.com>

        * include/debug/deque (std::__debug::deque): Declare.
        * include/debug/forward_list (std::__debug::forward_list): Declare.
        * include/debug/list (std::__debug::list): Declare.
        * include/debug/map (std::__debug::map): Declare.
        * include/debug/set (std::__debug::set): Declare.
        * include/debug/unordered_map (std::__debug::unordered_map): Declare.
        * include/debug/unordered_set (std::__debug::unordered_set): Declare.
        * include/debug/vector (std::__debug::vector): Declare.
        * testsuite/23_containers/deque/types/pmr_typedefs_debug.cc: New test.
        * testsuite/23_containers/forward_list/pmr_typedefs_debug.cc: New
        test.
        * testsuite/23_containers/list/pmr_typedefs_debug.cc: New test.
        * testsuite/23_containers/map/pmr_typedefs_debug.cc: New test.
        * testsuite/23_containers/multimap/pmr_typedefs_debug.cc: New test.
        * testsuite/23_containers/multiset/pmr_typedefs_debug.cc: New test.
        * testsuite/23_containers/set/pmr_typedefs_debug.cc: New test.
        * testsuite/23_containers/unordered_map/pmr_typedefs_debug.cc: New
        test.
        * testsuite/23_containers/unordered_multimap/pmr_typedefs_debug.cc:
        New test.
        * testsuite/23_containers/unordered_multiset/pmr_typedefs_debug.cc:
        New test.
        * testsuite/23_containers/unordered_set/pmr_typedefs_debug.cc: New
        test.
        * testsuite/23_containers/vector/cons/destructible_debug_neg.cc:
        Adjust dg-error lineno.
        * testsuite/23_containers/vector/types/pmr_typedefs_debug.cc: New
        test.

2018-08-23  Jonathan Wakely  <jwakely@redhat.com>

        * testsuite/util/testsuite_allocator.h (__gnu_test::memory_resource):
        Only define when RTTI is enabled.

        * include/debug/vector (__niter_base): Define for C++98.

        * testsuite/25_algorithms/partial_sort_copy/debug/irreflexive_neg.cc:
        Fix C++98 test to not use C++11 features.
        * testsuite/25_algorithms/fill_n/2.cc: Likewise.

        * scripts/check_compile: Fix comments.

        * include/debug/string (insert(__const_iterator, _InIter, _InIter)):
        [!_GLIBCXX_USE_CXX11_ABI]: Replace use of C++11-only cbegin() with
        begin(), for C++98 compatibility.

        * include/bits/basic_string.h [_GLIBCXX_USE_CXX11_ABI]
        (basic_string::__const_iterator): Change access to protected.
        [!_GLIBCXX_USE_CXX11_ABI] (basic_string::__const_iterator): Define
        as typedef for iterator.
        * include/debug/string (__const_iterator): Use typedef from base.
        (insert(const_iterator, _CharT))
        (replace(const_iterator, const_iterator, const basic_string&))
        (replace(const_iterator, const_iterator, const _CharT*, size_type))
        (replace(const_iterator, const_iterator, const CharT*))
        (replace(const_iterator, const_iterator, size_type, _CharT))
        (replace(const_iterator, const_iterator, _InputIter, _InputIter))
        (replace(const_iterator, const_iterator, initializer_list<_CharT>)):
        Change const_iterator parameters to __const_iterator.
        (insert(iterator, size_type, _CharT)): Add C++98 overload.
        (insert(const_iterator, _InputIterator, _InputIterator)): Change
        const_iterator parameter to __const_iterator.
        [!_GLIBCXX_USE_CXX11_ABI]: Add workaround for incorrect return type
        of base's member function.
        (insert(const_iterator, size_type, _CharT)) [!_GLIBCXX_USE_CXX11_ABI]:
        Likewise.
        (insert(const_iterator, initializer_list<_CharT>))
        [!_GLIBCXX_USE_CXX11_ABI]: Likewise.
        * testsuite/21_strings/basic_string/init-list.cc: Remove effective
        target directive.

        * testsuite/20_util/reference_wrapper/lwg2993.cc: Fix C++11 test to
        not use C++14 feature.
        * testsuite/23_containers/list/68222_neg.cc: Likewise.

        * testsuite/21_strings/basic_string/init-list.cc:
        Require cxx11-abi.
        * testsuite/experimental/polymorphic_allocator/pmr_typedefs_match.cc:
        Likewise.
        * testsuite/experimental/polymorphic_allocator/pmr_typedefs_string.cc:
        Likewise.

        * testsuite/23_containers/deque/capacity/max_size.cc: Fix test for
        C++98 mode.
        * testsuite/23_containers/deque/modifiers/assign/1.cc: Likewise.
        * testsuite/23_containers/list/modifiers/assign/1.cc: Likewise.
        * testsuite/23_containers/vector/bool/modifiers/assign/1.cc: Likewise.
        * testsuite/23_containers/vector/capacity/max_size.cc: Likewise.
        * testsuite/23_containers/vector/modifiers/assign/1.cc: Likewise.

2018-08-22  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/87061
        * include/experimental/regex [!_GLIBCXX_USE_CXX11_ABI]
        (experimental::pmr::match_results, experimental::pmr::cmatch)
        (experimental::pmr::smatch, experimental::pmr::wcmatch)
        (experimental::pmr::wsmatch): Do not declare for gcc4-compatible ABI,
        because COW strings don't support C++11 allocator model.
        * include/experimental/string [!_GLIBCXX_USE_CXX11_ABI]
        (experimental::pmr::basic_string, experimental::pmr::string)
        (experimental::pmr::u16string, experimental::pmr::u32string)
        (experimental::pmr::wstring): Likewise.
        * include/std/regex [!_GLIBCXX_USE_CXX11_ABI] (pmr::match_results)
        (pmr::cmatch, pmr::smatch, pmr::wcmatch, pmr::wsmatch): Likewise.
        * include/std/string [!_GLIBCXX_USE_CXX11_ABI] (pmr::basic_string)
        (pmr::string, pmr::u16string, pmr::u32string, pmr::wstring): Likewise.
        * testsuite/21_strings/basic_string/types/pmr_typedefs.cc: Require
        cxx11-abi.
        * testsuite/28_regex/match_results/pmr_typedefs.cc: Likewise.

        PR libstdc++/78448
        * include/bits/deque.tcc (deque::_M_range_initialize): Use
        _S_check_init_len to check size.
        (deque::_M_push_back_aux, deque::_M_push_front_aux): Throw length
        error if size would exceed max_size().
        * include/bits/stl_deque.h (_Deque_base::size_type): Remove typedef.
        (_Deque_base(_Deque_base&&, const allocator_type&, size_t)): Use
        size_t instead of size_type.
        (deq(size_type, const allocator_type&)
        (deq(size_type, const value_type&, const allocator_type&)
        (deque::_M_initialize_dispatch): Use _S_check_init_len to check size.
        (deque::max_size): Call _S_max_size.
        (deque::_S_check_init_len, deque::_S_max_size): New functions.
        * include/bits/stl_vector.h (vector(size_type, const allocator_type&))
        (vector(size_type, const value_type&, const allocator_type&))
        (vector::_M_initialize_dispatch, vector::_M_range_initialize): Use
        _S_check_init_len to check size.
        (vector::max_size): Call _S_max_size.
        (vector::_M_check_len): Prevent max from being expanded as a
        function-like macro.
        (vector::_S_check_init_len, vector::_S_max_size): New functions.
        * include/bits/vector.tcc (vector::_M_assign_aux): Use
        _S_check_init_len to check size.
        * testsuite/23_containers/deque/capacity/max_size.cc: New test.
        * testsuite/23_containers/vector/capacity/max_size.cc: New test.

2018-08-22  François Dumont  <fdumont@gcc.gnu.org>

        PR libstdc++/68222
        * include/debug/safe_iterator.h
        (_Safe_iterator<_It, _Sq, _Cat>): Add category template parameter.
        (_Safe_iterator<>::_Const_iterator): Remove.
        (_Safe_iterator<>::_IsConstant): New.
        (_Safe_iterator<>::_OtherIterator): New.
        (_Safe_iterator<_It, _Sq, _Cat>::_Safe_iterator<_MutIte>(
        const _Safe_iterator<_MutIte, _Sq, _Cat>&)): Add _IsConstant::__value in
        __gnu_cxx::__enable_if condition.
        (_Safe_iterator<_It, _Sq, _Cat>::_M_get_distance_to): New.
        (_Safe_iterator<_It, _Sq, _Cat>::_M_get_distance_from_begin): New.
        (_Safe_iterator<_It, _Sq, _Cat>::_M_get_distance_to_end): New.
        (_Safe_iterator<_It, _Sq, std::bidirectional_iterator_tag>): New.
        (_Safe_iterator<_It, _Sq, _Cat>::operator--()): Move...
        (_Safe_iterator<_It, _Sq, std::bidirectional_iterator_tag>
        ::operator--()): ...here.
        (_Safe_iterator<_It, _Sq, _Cat>::operator--(int)): Move...
        (_Safe_iterator<_It, _Sq, std::bidirectional_iterator_tag>
        ::operator--(int)): ...here.
        (_Safe_iterator<_It, _Sq, _Cat>::_M_decrementable()): Move...
        (_Safe_iterator<_It, _Sq, std::bidirectional_iterator_tag>
        ::_M_decrementable()): ...here.
        (_Safe_iterator<_It, _Sq, std::random_access_iterator_tag>): New.
        (_Safe_iterator<_It, _Sq, _Cat>::operator[](const difference_type&)):
        Move...
        (_Safe_iterator<_It, _Sq, std::random_access_iterator_tag>
        ::operator[](const difference_type&)): ...here.
        (_Safe_iterator<_It, _Sq, _Cat>::operator+=(const difference_type&)):
        Move...
        (_Safe_iterator<_It, _Sq, std::random_access_iterator_tag>
        ::operator+=(const difference_type&)): ...here.
        (_Safe_iterator<_It, _Sq, _Cat>::operator+(const difference_type&)):
        Move...
        (_Safe_iterator<_It, _Sq, std::random_access_iterator_tag>
        ::operator+(const difference_type&)): ...here.
        (_Safe_iterator<_It, _Sq, _Cat>::operator-=(const difference_type&)):
        Move...
        (_Safe_iterator<_It, _Sq, std::random_access_iterator_tag>
        ::operator-=(const difference_type&)): ...here.
        (_Safe_iterator<_It, _Sq, _Cat>::operator-(const difference_type&)):
        Move...
        (_Safe_iterator<_It, _Sq, std::random_access_iterator_tag>
        ::operator-(const difference_type&)): ...here.
        (operator<(const _Safe_iterator<>&, const _Safe_iterator<>&)):
        Constraint to random access iterators.
        (operator<=(const _Safe_iterator<>&, const _Safe_iterator<>&)):
        Likewise.
        (operator>(const _Safe_iterator<>&, const _Safe_iterator<>&)): Likewise.
        (operator>=(const _Safe_iterator<>&, const _Safe_iterator<>&)):
        Likewise.
        (operator-(const _Safe_iterator<>&, const _Safe_iterator<>&)): Likewise.
        (operator+(const difference_type&, const _Safe_iterator<>&)): Likewise.
        (__check_dereferenceable(const _Safe_iterator<>&)): Remove.
        (__get_distance): Remove.
        (__get_distance_from_begin): Remove.
        (__get_distance_to_end): Remove.
        (struct __is_safe_random_iterator<_Safe_iterator<>>): Remove partial
        specialization.
        (__base(const _Safe_iterator<>&, std::input_iterator_tag)): Remove.
        (__base(const _Safe_iterator<>&, std::random_access_iterator_tag)): Remove.
        (__base(const _Safe_iterator<>&)): Constraint to random access iterator.
        * include/debug/safe_iterator.tcc
        (_Safe_iterator<>::_M_get_distance_from_begin()): New.
        (_Safe_iterator<>::_M_get_distance_to_end()): New.
        (_Safe_iterator<>::_M_get_distance_to(const _Safe_iterator<>&)): New.
        (_Safe_iterator<_It, _Seq, std::random_access_iterator_tag>
        ::_M_valid_range): New.
        * include/debug/safe_local_iterator.h
        (_Safe_local_iterator<>::_Const_local_iterator): Remove.
        (_Safe_local_iterator<>::_IsConstant): New.
        (_Safe_local_iterator<>::_OtherIterator): New.
        (_Safe_local_iterator<_It, _Cont>::_Safe_local_iterator<_MutIte, _Cont>(
        const _Safe_local_iterator<_MutIte, _Seq>&)): Add _IsConstant::__value
        in __gnu_cxx::__enable_if condition. If singular compare base iterator
        with _MutIte rather than _It.
        (_Safe_local_iterator<>::_S_constant): Make constexpr.
        (_Safe_local_iterator<>::_M_get_distance_to): New.
        (__check_dereferenceable(const _Safe_local_iterator<>&)): Remove.
        (__get_distance(const _Safe_local_iterator<>&,
        const _Safe_local_iterator<>&, std::input_iterator_tag)): Remove.
        (__valid_range(const _Safe_local_iterator<>&,
        const _Safe_local_iterator<>&)): New.
        * include/debug/safe_local_iterator.tcc
        (_Safe_local_iterator<>::_M_get_distance_to): New.
        * include/debug/deque (std::__debug::deque<>): Add
        ::__gnu_debug::_Safe_iterator<> friend declaration.
        * include/debug/forward_list (std::__debug::forward_list<>): Likewise.
        * include/debug/list (std::__debug::list<>): Likewise.
        * include/debug/map.h (std::__debug::map<>): Likewise.
        * include/debug/multimap.h (std::__debug::multimap<>): Likewise.
        * include/debug/set.h (std::__debug::set<>): Likewise.
        * include/debug/multiset.h (std::__debug::multiset<>): Likewise.
        * include/debug/string (std::__debug::basic_string<>): Likewise.
        * include/debug/unordered_map (std::__debug::unordered_map<>): Likewise
        and add ::__gnu_debug::_Safe_local_iterator<> friend declaration.
        (std::__debug::unordered_multimap<>): Likewise.
        * include/debug/unordered_set (std::__debug::unordered_set<>): Likewise.
        (std::__debug::unordered_multiset<>): Likewise.
        * include/debug/formatter.h: Adapt.
        * include/debug/helper_functions.h
        (__gnu_debug::_Safe_local_iterator<>): Add declaration.
        (__get_distance<_Ite>(_Ite, _Ite, std::random_access_iterator_tag):
        Pass parameter by copy.
        (__get_distance<_Ite>(_Ite, _Ite, std::input_iterator_tag): Likewise.
        (__get_distance<_Ite>(_Ite, _Ite): Likewise.
        (__valid_range_aux<_Integral>): Pass _Integral by copy.
        (__valid_range<_InputIterator>): Pass _InputIterator by copy.
        (__valid_range<>(const _Safe_iterator<>&,
        const _Safe_iterator<>&, typename _Distance_traits<>::__type&)):
        Declare.
        (__valid_range(const _Safe_local_iterator<>&,
        const _Safe_local_iterator<>&, typename _Distance_traits<>::__type&)):
        Declare.
        (__valid_range<>(const _Safe_iterator<>&, const _Safe_iterator<>&)):
        Declare.
        (__valid_range(const _Safe_local_iterator<>&, const _Safe_local_iterator<>&)):
        Declare.
        (__can_advance): Adapt.
        (struct __is_safe_random_iterator<>): Remove.
        (struct _SIter_base<>): Remove.
        * include/debug/functions.h: Include <bits/stl_iterator.h>.
        (__check_dereferenceable): Remove.
        (__foreign_iterator_aux4, __foreign_iterator_aux3): Adapt.
        (__foreign_iterator_aux2, __foreign_iterator_aux): Adapt.
        (__foreign_iterator): Adapt.
        * include/debug/stl_iterator.h
        (__is_safe_random_iterator<std::reverse_iterator<>>): Remove.
        (__base(const std::reverse_iterator<_Safe_iterator<_It, _Sq>)):
        Constraint for random access iterators.
        (__niter_base): Adapt.
        * testsuite/util/testsuite_containers.h:
        Include <bits/boost_concept_check.h>.
        (iterator_concept_checks<_It, _Mutable, _Category>): New.
        (citerator<_Cont>::forward_members::forward_members()): Instantiate
        latter for container iterator and const_iterator.
        * testsuite/23_containers/list/68222_neg.cc: New.
        * testsuite/23_containers/vector/cons/destructible_debug_neg.cc: Adapt
        line number.
        * testsuite/23_containers/unordered_set/debug/debug_functions.cc:
        (test01): Remove.
        * testsuite/23_containers/vector/debug/debug_functions.cc (test01):
        Remove.

2018-08-22  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/77854
        * doc/xml/manual/status_cxx1998.xml: Document size_type and
        difference_type for containers.
        * doc/html/*: Regenerate.

2018-08-21  François Dumont  <fdumont@gcc.gnu.org>

        P0646R1 Improving the Return Value of Erase-Like Algorithms I
        * include/debug/forward_list (forward_list::__remove_return_type):
        Define typedef as size_type or void, according to __cplusplus value.
        (_GLIBCXX_FWDLIST_REMOVE_RETURN_TYPE_TAG): Define macro as abi-tag or
        empty, according to __cplusplus value.
        (_GLIBCXX20_ONLY): Define macro.
        (forward_list::remove, forward_list::unique): Use typedef and macro
        to change return type and add abi-tag for C++2a. Return number of
        removed elements for C++2a.
        (forward_list::remove_if<Pred>, forward_list::unique<BinPred>): Use
        typedef to change return type for C++2a. Return number of removed
        elements for C++2a.
        * include/debug/list (list::__remove_return_type): Define typedef as
        size_type or void, according to __cplusplus value.
        (_GLIBCXX_LIST_REMOVE_RETURN_TYPE_TAG): Define macro as abi-tag or
        empty, according to __cplusplus value.
        (_GLIBCXX20_ONLY): Define macro.
        (list::remove, list::unique): Use typedef and macro to change return
        type and add abi-tag for C++2a. Return number of removed elements for
        C++2a.
        (list::remove_if<Predicate>, list::unique<BinaryPredicate>): Use typedef
        to change return type for C++2a. Return number of removed elements for
        C++2a.

2018-08-21  David Edelsohn  <dje.gcc@gmail.com>

        * testsuite/18_support/new_nothrow.cc: XFAIL on AIX.

2018-08-21  Jonathan Wakely  <jwakely@redhat.com>

        * testsuite/26_numerics/bit/bitops.count/countl_one.cc: Remove
        redundant dg-do directive.
        * testsuite/26_numerics/bit/bitops.count/countl_zero.cc: Likewise.
        * testsuite/26_numerics/bit/bitops.count/countr_one.cc: Likewise.
        * testsuite/26_numerics/bit/bitops.count/countr_zero.cc: Likewise.
        * testsuite/26_numerics/bit/bitops.count/popcount.cc: Likewise.

2018-08-20  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/86963
        * include/std/tuple (_Tuple_impl::operator=): Define as deleted.
        (_Tuple_impl::_M_assign): New functions to perform assignment instead
        of assignment operators.
        (_Tuple_impl::_M_swap): Remove exception specification.
        (_Tuple_impl<_Idx, _Head>): Likewise.
        (_TC::_NonNestedTuple, _TC::_NotSameTuple): Use __remove_cvref_t.
        (__tuple_base): Remove.
        (tuple, tuple<_T1, _T2>): Remove inheritance from __tuple_base.
        (tuple::operator=, tuple<_T1, _T2>::operator=): Call _M_assign.
        (tuple::swap, tuple<_T1, _T2>::swap): Define exception specification
        using __is_nothrow_swappable.
        (tuple<_T1, _T2>::tuple(_U1&&, _U2&&)): Use __remove_cvref_t.

        * include/std/optional (_Optional_payload): Use variable templates
        for conditions in default template arguments and exception
        specifications.
        (optional): Likewise. Adjust indentation.
        (optional::__not_self, optional::__not_tag, optional::_Requires): New
        SFINAE helpers.
        (optional::optional): Use new helpers in constructor constraints.
        * include/std/type_traits (__or_v, __and_v): New variable templates.
        * testsuite/20_util/optional/cons/value_neg.cc: Change dg-error to
        dg-prune-output. Remove unused header.

2018-08-18  François Dumont  <fdumont@gcc.gnu.org>

        * testsuite/25_algorithms/copy/86658.cc: Use dg-options to define
        _GLIBCXX_DEBUG.

2018-08-17  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/86963
        * include/std/tuple (__tuple_base): New class template with deleted
        copy assignment operator.
        (tuple, tuple<_T1, _T2>): Derive from __tuple_base<tuple> so that
        implicit copy/move assignment operator will be deleted/suppressed.
        (tuple::__assignable, tuple<_T1, _T2>::__assignable): New helper
        functions for SFINAE constraints on assignment operators.
        (tuple::__nothrow_assignable, tuple<_T1, _T2>::__nothrow_assignable):
        New helper functions for exception specifications.
        (tuple::operator=(const tuple&), tuple::operator=(tuple&&))
        (tuple<_T1, _T2>::operator=(const tuple&))
        (tuple<_T1, _T2>::operator=(tuple&&)): Change parameter types to
        __nonesuch_no_braces when the operator should be defined implicitly.
        Use __nothrow_assignable for exception specifications.
        (tuple::operator=(const tuple<_UElements...>&))
        (tuple::operator=(tuple<_UElements...>&&))
        (tuple<_T1, _T2>::operator=(const tuple<_U1, _U2>&))
        (tuple<_T1, _T2>::operator=(tuple<_U1, _U2>&&))
        (tuple<_T1, _T2>::operator=(const pair<_U1, _U2>&))
        (tuple<_T1, _T2>::operator=(pair<_U1, _U2>&&)): Constrain using
        __assignable and use __nothrow_assignable for exception
        specifications.
        * python/libstdcxx/v6/printers.py (is_specialization_of): Accept
        gdb.Type as first argument, instead of a string.
        (StdTuplePrinter._iterator._is_nonempty_tuple): New method to check
        tuple for expected structure.
        (StdTuplePrinter._iterator.__init__): Use _is_nonempty_tuple.
        * testsuite/20_util/tuple/dr2729.cc: New test.
        * testsuite/20_util/tuple/element_access/get_neg.cc: Change dg-error
        to dg-prune-output.

2018-08-16  Jonathan Wakely  <jwakely@redhat.com>

        * include/tr1/legendre_function.tcc (__sph_legendre): Avoid warning
        about signed/unsigned comparison.

        * include/std/ostream (basic_ostream::sentry::~sentry): Suppress
        deprecation warnings for using uncaught_exception().

        PR libstdc++/86447
        * src/c++11/cow-stdexcept.cc [_GLIBCXX_FULLY_DYNAMIC_STRING]
        (logic_error::logic_error(logic_error&&))
        (logic_error::operator=(logic_error&&))
        (runtime_error::runtime_error(runtime_error&&))
        (runtime_error::operator=(runtime_error&&)): Copy strings instead of
        moving, to avoid allocating empty reps for moved-from strings.

2018-08-15  Jonathan Wakely  <jwakely@redhat.com>

        * include/experimental/regex: Remove begin/end macros for namespace.
        * include/experimental/string: Likewise.
        * testsuite/experimental/polymorphic_allocator/pmr_typedefs_deque.cc:
        New test.
        * testsuite/experimental/polymorphic_allocator/
        pmr_typedefs_forward_list.cc: New test.
        * testsuite/experimental/polymorphic_allocator/pmr_typedefs_list.cc:
        New test.
        * testsuite/experimental/polymorphic_allocator/pmr_typedefs_map.cc:
        New test.
        * testsuite/experimental/polymorphic_allocator/pmr_typedefs_match.cc:
        New test.
        * testsuite/experimental/polymorphic_allocator/
        pmr_typedefs_multimap.cc: New test.
        * testsuite/experimental/polymorphic_allocator/
        pmr_typedefs_multiset.cc: New test.
        * testsuite/experimental/polymorphic_allocator/pmr_typedefs_set.cc:
        New test.
        * testsuite/experimental/polymorphic_allocator/pmr_typedefs_string.cc:
        New test.
        * testsuite/experimental/polymorphic_allocator/
        pmr_typedefs_unordered_map.cc: New test.
        * testsuite/experimental/polymorphic_allocator/
        pmr_typedefs_unordered_multimap.cc: New test.
        * testsuite/experimental/polymorphic_allocator/
        pmr_typedefs_unordered_multiset.cc: New test.
        * testsuite/experimental/polymorphic_allocator/
        pmr_typedefs_unordered_set.cc: New test.
        * testsuite/experimental/polymorphic_allocator/pmr_typedefs_vector.cc:
        New test.

        * include/bits/uses_allocator.h (__uses_allocator_construct): Qualify
        calls to __uses_allocator_construct_impl and __use_alloc.
        * include/experimental/memory_resource
        (polymorphic_allocator::_M_construct): Remove.
        (polymorphic_allocator::construct): Call __uses_allocator_construct.
        Qualify calls to __use_alloc.
        * include/std/memory_resource (polymorphic_allocator::construct): Fix
        type in SFINAE constraint. Use constexpr if instead of tag dispatching
        to _S_construct overloads.
        (polymorphic_allocator::construct(pair<T1, T2>*, ...)): Fix order of
        arguments to _S_construct_p.
        (polymorphic_allocator::_S_construct): Remove.
        (polymorphic_allocator::_S_construct_p): Return allocators by value
        not by reference.
        * include/std/scoped_allocator (scoped_allocator_adaptor::construct):
        Qualify calls to __use_alloc.
        * testsuite/20_util/polymorphic_allocator/construct_pair.cc: New test,
        copied from testsuite/20_util/scoped_allocator/construct_pair.cc.
        * testsuite/experimental/polymorphic_allocator/1.cc: New test.
        * testsuite/experimental/polymorphic_allocator/construct_pair.cc:
        New test.

        * src/c++17/memory_resource.cc [!_GLIBCXX_HAS_GTHREADS]
        (atomic_mem_res): Add unsynchronized definition for single-threaded.

2018-08-14  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/86954
        * include/bits/stl_tempbuf.h (return_temporary_buffer): Use
        non-placement delete.

        * include/std/chrono (__check_overflow): Simplify definition.
        (_Checked_integral_constant): Remove.

        PR libstdc++/86846
        * src/c++17/default_resource.h: New file, defining default_res.
        * src/c++17/memory_resource.cc [ATOMIC_POINTER_LOCK_FREE != 2]
        (atomic_mem_res): Define alternative for atomic<memory_resource*>
        using a mutex instead of atomics.

        PR libstdc++/85343
        * config/abi/pre/gnu.ver: Export new symbol.
        * doc/xml/manual/abi.xml: Document new versions.
        * include/bits/fstream.tcc (basic_filebuf<C, T>::underflow)
        (basic_filebuf<C, T>::xsgetn): Pass errno to __throw_ios_failure.
        * include/bits/functexcept.h (__throw_ios_failure(const char*, int)):
        Declare new overload.
        * src/c++11/cxx11-ios_failure.cc (__ios_failure): Add new constructor
        and static member function.
        (__throw_ios_failure(const char*, int)): Define.
        * src/c++98/ios_failure.cc [!_GLIBCXX_USE_DUAL_ABI]
        (__throw_ios_failure(const char*, int)): Define.

2018-08-14  Jeremy Sawicki  <jeremy-gcc@sawicki.us>

        * include/ext/rope (_Rope_iterator_base(const _Rope_iterator_base&))
        (_Rope_const_iterator::operator=(const _Rope_const_iterator&))
        (_Rope_iterator::operator=(const _Rope_iterator&)): Ensure
        copied/assigned rope iterators don't retain pointers to the iterator
        they were copied/assigned from.
        * testsuite/ext/rope/7.cc: New.

2018-08-13  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/45093
        * include/bits/stl_tree.h (_Rb_tree::_M_destroy_node(_Link_type)):
        Combine definitions to avoid --detect-odr-violations warning.

        * libsupc++/new_opa.cc (operator new(size_t, align_val_t)): Use
        __is_pow2 to check for valid alignment. Avoid branching when rounding
        size to multiple of alignment.

        * include/Makefile.am: Install <bit> and <version> for freestanding.
        * include/Makefile.in: Regenerate.
        * testsuite/17_intro/freestanding.cc: Check for <bit> and <version>.

        Revert
        2018-08-10  Sebastian Huber  <sebastian.huber@embedded-brains.de>

        PR target/85904
        * configure.ac: Define HAVE_ALIGNED_ALLOC if building for
        Newlib.
        * configure: Regenerate.

2018-08-10  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/68210
        * doc/xml/manual/intro.xml: Document LWG 206 change.
        * libsupc++/del_op.cc: Replace _GLIBCXX_USE_NOEXCEPT with noexcept.
        * libsupc++/del_opa.cc: Likewise.
        * libsupc++/del_opant.cc: Likewise.
        * libsupc++/del_opnt.cc: Likewise. Call operator delete(ptr) instead
        of free(ptr).
        * libsupc++/del_ops.cc: Replace _GLIBCXX_USE_NOEXCEPT with noexcept.
        * libsupc++/del_opsa.cc: Likewise.
        * libsupc++/del_opva.cc: Likewise.
        * libsupc++/del_opvant.cc: Likewise.
        * libsupc++/del_opvnt.cc: Likewise. Call operator delete[](ptr)
        instead of operator delete(ptr).
        * libsupc++/del_opvs.cc: Replace _GLIBCXX_USE_NOEXCEPT with noexcept.
        * libsupc++/del_opvsa.cc: Likewise.
        * libsupc++/new_op.cc: Use __builtin_expect in check for zero size.
        * libsupc++/new_opa.cc: Use nullptr instead of literal 0.
        * libsupc++/new_opant.cc: Likewise. Replace _GLIBCXX_USE_NOEXCEPT
        with noexcept.
        * libsupc++/new_opnt.cc: Likewise. Call operator new(sz) instead of
        malloc(sz).
        * libsupc++/new_opvant.cc: Use nullptr and noexcept.
        * libsupc++/new_opvnt.cc: Likewise. Call operator new[](sz) instead of
        operator new(sz, nothrow).
        * testsuite/18_support/new_nothrow.cc: New test.

2018-08-10  Martin Liska  <mliska@suse.cz>

        * libsupc++/new_op.cc (new): Remove __builtin_expect as malloc
        predictor can handle that.
        * libsupc++/new_opa.cc: Likewise.
        * libsupc++/new_opnt.cc (new): Likewise.

2018-08-10  Sebastian Huber  <sebastian.huber@embedded-brains.de>

        PR target/85904
        * configure.ac: Define HAVE_ALIGNED_ALLOC if building for
        Newlib.
        * configure: Regenerate.

2018-08-10  Jonathan Wakely  <jwakely@redhat.com>

        * include/std/deque (std::pmr::deque): Declare alias.
        * include/std/forward_list (std::pmr::forward_list): Likewise.
        * include/std/list (std::pmr::list): Likewise.
        * include/std/map (std::pmr::map, std::pmr::multimap): Likewise.
        * include/std/regex (std::pmr::match_results, std::pmr::cmatch)
        (std::pmr::smatch, std::pmr::wcmatch, std::pmr::wsmatch): Likewise.
        * include/std/set (std::pmr::set, std::pmr::multiset): Likewise.
        * include/std/string (std::pmr::basic_string, std::pmr::string)
        (std::pmr::u16string, std::pmr::u32string, std::pmr::wstring):
        Likewise.
        * include/std/unordered_map (std::pmr::unordered_map)
        (std::pmr::unordered_multimap): Likewise.
        * include/std/unordered_set (std::pmr::unordered_set)
        (std::pmr::unordered_multiset): Likewise.
        * include/std/vector (std::pmr::vector): Likewise.
        * testsuite/21_strings/basic_string/types/pmr_typedefs.cc: New test.
        * testsuite/23_containers/deque/types/pmr_typedefs.cc: New test.
        * testsuite/23_containers/forward_list/pmr_typedefs.cc: New test.
        * testsuite/23_containers/list/pmr_typedefs.cc: New test.
        * testsuite/23_containers/map/pmr_typedefs.cc: New test.
        * testsuite/23_containers/multimap/pmr_typedefs.cc: New test.
        * testsuite/23_containers/multiset/pmr_typedefs.cc: New test.
        * testsuite/23_containers/set/pmr_typedefs.cc: New test.
        * testsuite/23_containers/unordered_map/pmr_typedefs.cc: New test.
        * testsuite/23_containers/unordered_multimap/pmr_typedefs.cc: New
        test.
        * testsuite/23_containers/unordered_multiset/pmr_typedefs.cc: New
        test.
        * testsuite/23_containers/unordered_set/pmr_typedefs.cc: New test.
        * testsuite/23_containers/vector/pmr_typedefs.cc: New test.
        * testsuite/28_regex/match_results/pmr_typedefs.cc: New test.

2018-08-08  François Dumont  <fdumont@gcc.gnu.org>

        * include/bits/stl_algo.h
        (__rotate(_Ite, _Ite, _Ite, forward_iterator_tag))
        (__rotate(_Ite, _Ite, _Ite, bidirectional_iterator_tag))
        (__rotate(_Ite, _Ite, _Ite, random_access_iterator_tag)): Move code
        duplication...
        (rotate(_Ite, _Ite, _Ite)): ...here.
        (__stable_partition_adaptive(_FIt, _FIt, _Pred, _Dist, _Pointer, _Dist)):
        Simplify rotate call.
        (__rotate_adaptive(_BIt1, _BIt1, _BIt1, _Dist, _Dist, _Bit2, _Dist)):
        Likewise.
        (__merge_without_buffer(_BIt, _BIt, _BIt, _Dist, _Dist, _Comp)):
        Likewise.

2018-08-08  Jonathan Wakely  <jwakely@redhat.com>

        * libsupc++/new_opa.cc (aligned_alloc): Declare inside namespace to
        avoid clashing with an ::aligned_alloc function that was not detected
        by configure.

        * doc/xml/manual/using.xml: Fix markup for empty table entry.
        * doc/html/*: Regenerate.

        * doc/xml/manual/using.xml: Add missing header to table and fix typo.
        * doc/html/*: Regenerate.

        PR libstdc++/86597
        * include/bits/fs_dir.h (directory_entry::_M_file_type(error_code&)):
        Clear error_code when cached type is used.
        * testsuite/27_io/filesystem/directory_entry/86597.cc: New test.

2018-08-07  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/86874
        * include/std/variant (_Copy_ctor_base::_M_destructive_move): Define
        here instead of in _Move_assign_base.
        (_Copy_ctor_base<true, _Types...>::_M_destructive_move): Define.
        (_Copy_assign_base::operator=): Use _M_destructive_move when changing
        the contained value to another alternative.
        (_Move_assign_base::operator=): Likewise.
        (_Move_assign_base::_M_destructive_move): Remove.
        * testsuite/20_util/variant/86874.cc: New test.

        PR libstdc++/86861
        * libsupc++/new_opa.cc [_GLIBCXX_HAVE_MEMALIGN] (aligned_alloc):
        Replace macro with inline function.
        [__sun]: Increase alignment to meet memalign precondition.
        [!HAVE__ALIGNED_MALLOC && !HAVE_POSIX_MEMALIGN && !HAVE_MEMALIGN]
        (aligned_alloc): Move check for valid alignment to operator new.
        Remove redundant check for non-zero size, it's enforced by the caller.
        (operator new): Move check for valid alignment here. Use
        __builtin_expect on check for zero size.

        * config/abi/pre/gnu.ver: Export monotonic_buffer_resource members.
        * include/std/memory_resource (monotonic_buffer_resource::release):
        Call _M_release_buffers to free buffers.
        (monotonic_buffer_resource::do_allocate): Call _M_new_buffer to
        allocate a new buffer from upstream.
        (monotonic_buffer_resource::_M_new_buffer): Declare.
        (monotonic_buffer_resource::_M_release_buffers): Declare.
        (monotonic_buffer_resource::_Chunk): Replace definition with
        declaration as opaque type.
        * src/c++17/memory_resource.cc (monotonic_buffer_resource::_Chunk):
        Define.
        (monotonic_buffer_resource::_M_new_buffer): Define.
        (monotonic_buffer_resource::_M_release_buffers): Define.

2018-08-05  François Dumont  <fdumont@gcc.gnu.org>

        * include/bits/stl_iterator.h: Fix comment.

2018-08-03  Jonathan Wakely  <jwakely@redhat.com>

        * src/c++11/system_error.cc
        (system_error_category::default_error_condition): Add workaround for
        ENOTEMPTY and EEXIST having the same value on AIX.
        * testsuite/19_diagnostics/error_category/system_category.cc: Add
        extra testcases for EDOM, EILSEQ, ERANGE, EEXIST and ENOTEMPTY.

2018-08-01  Jonathan Wakely  <jwakely@redhat.com>

        * configure: Regenerate.
        * configure.ac: Add -D_GLIBCXX_ASSERTIONS to default DEBUG_FLAGS.
        * src/c++11/futex.cc: Use __glibcxx_assert instead of
        _GLIBCXX_DEBUG_ASSERT.

2018-08-01  Mike Crowe  <mac@mcrowe.com>

        * include/std/condition_variable (wait_for): Use steady_clock.

2018-08-01  Mike Crowe  <mac@mcrowe.com>

        * include/std/condition_variable (wait_until): Only report timeout
        if we really have timed out when measured against the
        caller-supplied clock.
        * testsuite/30_threads/condition_variable/members/2.cc: Add test
        case to confirm above behaviour.

2018-08-01  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/60555
        * src/c++11/system_error.cc
        (system_error_category::default_error_condition): New override to
        check for POSIX errno values.
        * testsuite/19_diagnostics/error_category/generic_category.cc: New
        * testsuite/19_diagnostics/error_category/system_category.cc: New
        test.

2018-07-31  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/86751
        * include/bits/stl_pair.h (__pair_base): New class with deleted copy
        assignment operator.
        (pair): Derive from __pair_base.
        (pair::operator=): Remove deleted overload.
        * python/libstdcxx/v6/printers.py (StdPairPrinter): New pretty printer
        so that new base class isn't shown in GDB.
        * testsuite/20_util/pair/86751.cc: New test.
        * testsuite/20_util/pair/ref_assign.cc: New test.

        * include/bits/c++config (_GLIBCXX_HAVE_BUILTIN_HAS_UNIQ_OBJ_REP)
        (_GLIBCXX_HAVE_BUILTIN_IS_AGGREGATE): Move definitions here.
        (_GLIBCXX_HAVE_BUILTIN_LAUNDER): Likewise. Use !__is_identifier
        instead of __has_builtin.
        * include/std/type_traits (_GLIBCXX_HAVE_BUILTIN_HAS_UNIQ_OBJ_REP)
        (_GLIBCXX_HAVE_BUILTIN_IS_AGGREGATE): Remove definitions from here.
        * include/std/version [!_GLIBCXX_HAS_GTHREADS]
        (__cpp_lib_shared_timed_mutex, __cpp_lib_scoped_lock)
        (__cpp_lib_shared_mutex): Don't define when Gthreads not in use.
        [!_GLIBCXX_HAVE_BUILTIN_HAS_UNIQ_OBJ_REP]
        (__cpp_lib_has_unique_object_representations): Don't define when
        builtin not available.
        [!_GLIBCXX_HAVE_BUILTIN_IS_AGGREGATE] (__cpp_lib_is_aggregate):
        Likewise.
        [!_GLIBCXX_HAVE_BUILTIN_LAUNDER] (__cpp_lib_launder): Likewise.
        * libsupc++/new (_GLIBCXX_HAVE_BUILTIN_LAUNDER): Remove definition
        from here.

        * doc/xml/manual/test.xml: Improve documentation on writing tests for
        newer standards.
        * doc/xml/manual/using.xml: Document all headers for C++11 and later.
        * doc/html/*: Regenerate.

        * include/ext/pointer.h [__cplusplus >= 201103L]
        (_Pointer_adapter::operator bool): Add explicit conversion operator
        to replace safe bool idiom.

2018-07-30  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/86734
        * include/bits/stl_iterator.h (reverse_iterator::operator->): Call
        _S_to_pointer (LWG 1052, LWG 2118).
        (reverse_iterator::_S_to_pointer): Define overloaded helper functions.
        * testsuite/24_iterators/reverse_iterator/dr1052.cc: New test.
        * testsuite/24_iterators/reverse_iterator/dr2188.cc: New test.

        * libsupc++/new_opa.cc (operator new(size_t, align_val_t)): Add
        workaround for aligned_alloc bug on AIX.
        * testsuite/18_support/new_aligned.cc: New test.

2018-07-26  Marek Polacek  <polacek@redhat.com>

        * testsuite/30_threads/condition_variable_any/cond.cc: New.

2018-07-26  Marek Polacek  <polacek@redhat.com>

        * src/c++98/locale_init.cc: Fix #ifdef condition.

2018-07-26  Jonathan Wakely  <jwakely@redhat.com>

        * testsuite/18_support/aligned_alloc/aligned_alloc.cc: Add
        dg-require-cstdint directive.
        * testsuite/20_util/allocator/overaligned.cc: Likewise.
        * testsuite/20_util/any/cons/aligned.cc: Likewise.
        * testsuite/20_util/monotonic_buffer_resource/allocate.cc: Likewise.
        * testsuite/20_util/monotonic_buffer_resource/deallocate.cc: Likewise.
        * testsuite/20_util/shared_ptr/thread/default_weaktoshared.cc:
        Likewise.
        * testsuite/20_util/shared_ptr/thread/mutex_weaktoshared.cc: Likewise.
        * testsuite/23_containers/list/modifiers/insert/25288.cc: Likewise.
        * testsuite/23_containers/set/allocator/move_assign.cc: Likewise.
        * testsuite/25_algorithms/make_heap/complexity.cc: Likewise.
        * testsuite/25_algorithms/pop_heap/complexity.cc: Require cstdint and
        random_device effective-target.
        * testsuite/25_algorithms/push_heap/complexity.cc: Likewise.
        * testsuite/25_algorithms/sample/1.cc: Require cstdint.
        * testsuite/25_algorithms/sample/2.cc: Likewise.
        * testsuite/25_algorithms/sort_heap/complexity.cc: Require cstdint
        and random_device.
        * testsuite/26_numerics/headers/random/types_std_c++0x.cc: Require
        cstdint.
        * testsuite/26_numerics/random/chi_squared_distribution/83833.cc:
        Likewise.
        * testsuite/26_numerics/random/discard_block_engine/requirements/
        constexpr_data.cc: Likewise.
        * testsuite/26_numerics/random/discard_block_engine/requirements/
        constexpr_functions.cc: Likewise.
        * testsuite/26_numerics/random/independent_bits_engine/requirements/
        constexpr_functions.cc: Likewise.
        * testsuite/26_numerics/random/linear_congruential_engine/requirements/
        constexpr_data.cc: Likewise.
        * testsuite/26_numerics/random/linear_congruential_engine/requirements/
        constexpr_functions.cc: Likewise.
        * testsuite/26_numerics/random/mersenne_twister_engine/requirements/
        constexpr_data.cc: Likewise.
        * testsuite/26_numerics/random/mersenne_twister_engine/requirements/
        constexpr_functions.cc: Likewise.
        * testsuite/26_numerics/random/pr60037-neg.cc: Likewise.
        * testsuite/26_numerics/random/seed_seq/cons/65631.cc: Likewise.
        * testsuite/26_numerics/random/shuffle_order_engine/requirements/
        constexpr_data.cc: Add dg-require-cstdint directive.
        * testsuite/26_numerics/random/shuffle_order_engine/requirements/
        constexpr_functions.cc: Likewise.
        * testsuite/26_numerics/random/subtract_with_carry_engine/requirements/
        constexpr_data.cc: Likewise.
        * testsuite/26_numerics/random/subtract_with_carry_engine/requirements/
        constexpr_functions.cc: Likewise.
        * testsuite/26_numerics/random/uniform_real_distribution/operators/
        64351.cc: Likewise.
        * testsuite/29_atomics/headers/atomic/types_std_c++0x.cc: Likewise.
        * testsuite/experimental/algorithm/sample-2.cc: Likewise.
        * testsuite/experimental/algorithm/sample.cc: Likewise.
        * testsuite/experimental/algorithm/search.cc: Likewise.
        * testsuite/experimental/algorithm/shuffle.cc: Likewise.
        * testsuite/experimental/any/cons/aligned.cc: Likewise.
        * testsuite/experimental/memory_resource/new_delete_resource.cc:
        Likewise.
        * testsuite/experimental/memory_resource/resource_adaptor.cc: Likewise.
        * testsuite/experimental/random/randint.cc: Likewise.
        * testsuite/experimental/source_location/1.cc: Likewise.
        * testsuite/ext/bitmap_allocator/overaligned.cc: Likewise.
        * testsuite/ext/malloc_allocator/overaligned.cc: Likewise.
        * testsuite/ext/mt_allocator/overaligned.cc: Likewise.
        * testsuite/ext/new_allocator/overaligned.cc: Likewise.
        * testsuite/ext/pb_ds/regression/hash_map_rand.cc: Likewise.
        * testsuite/ext/pb_ds/regression/hash_set_rand.cc: Likewise.
        * testsuite/ext/pb_ds/regression/list_update_map_rand.cc: Likewise.
        * testsuite/ext/pb_ds/regression/list_update_set_rand.cc: Likewise.
        * testsuite/ext/pb_ds/regression/priority_queue_rand.cc: Likewise.
        * testsuite/ext/pb_ds/regression/tree_map_rand.cc: Likewise.
        * testsuite/ext/pb_ds/regression/tree_set_rand.cc: Likewise.
        * testsuite/ext/pb_ds/regression/trie_map_rand.cc: Likewise.
        * testsuite/ext/pb_ds/regression/trie_set_rand.cc: Likewise.
        * testsuite/ext/pool_allocator/overaligned.cc: Likewise.
        * testsuite/ext/throw_allocator/check_allocate_max_size.cc: Likewise.
        * testsuite/ext/throw_allocator/check_deallocate_null.cc: Likewise.
        * testsuite/ext/throw_allocator/check_delete.cc: Likewise.
        * testsuite/ext/throw_allocator/check_new.cc: Likewise.
        * testsuite/ext/throw_allocator/deallocate_global.cc: Likewise.
        * testsuite/ext/throw_allocator/deallocate_local.cc: Likewise.
        * testsuite/ext/throw_allocator/explicit_instantiation.cc: Likewise.
        * testsuite/ext/throw_allocator/variadic_construct.cc: Likewise.
        * testsuite/tr1/8_c_compatibility/cinttypes/functions.cc: Likewise.

        * testsuite/30_threads/recursive_mutex/cons/1.cc: Likewise.
        * testsuite/30_threads/recursive_mutex/cons/assign_neg.cc: Likewise.
        * testsuite/30_threads/recursive_mutex/cons/copy_neg.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/requirements/standard_layout.cc:
        Likewise.
        * testsuite/30_threads/recursive_mutex/requirements/typedefs.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/cons/assign_neg.cc:
        Likewise.
        * testsuite/30_threads/recursive_timed_mutex/cons/copy_neg.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/requirements/typedefs.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/scoped_lock/cons/1.cc: Likewise.
        * testsuite/30_threads/scoped_lock/requirements/
        explicit_instantiation.cc: Likewise.
        * testsuite/30_threads/scoped_lock/requirements/typedefs.cc: Likewise.
        * testsuite/30_threads/shared_future/cons/assign.cc: Likewise.
        * testsuite/30_threads/shared_future/cons/constexpr.cc: Likewise.
        * testsuite/30_threads/shared_future/cons/copy.cc: Likewise.
        * testsuite/30_threads/shared_future/cons/default.cc: Likewise.
        * testsuite/30_threads/shared_future/cons/move.cc: Likewise.
        * testsuite/30_threads/shared_future/cons/move_assign.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_future/requirements/
        explicit_instantiation.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_lock/requirements/
        explicit_instantiation.cc: Likewise.
        * testsuite/30_threads/shared_lock/requirements/typedefs.cc: Likewise.
        * testsuite/30_threads/shared_mutex/cons/1.cc: Likewise.
        * testsuite/30_threads/shared_mutex/cons/assign_neg.cc: Likewise.
        * testsuite/30_threads/shared_mutex/cons/copy_neg.cc: Likewise.
        * testsuite/30_threads/shared_mutex/requirements/standard_layout.cc:
        Likewise.
        * testsuite/30_threads/shared_mutex/try_lock/1.cc: Likewise.
        * testsuite/30_threads/shared_mutex/try_lock/2.cc: Likewise.
        * testsuite/30_threads/shared_mutex/unlock/1.cc: Likewise.
        * testsuite/30_threads/shared_timed_mutex/cons/1.cc: Likewise.
        * testsuite/30_threads/shared_timed_mutex/cons/assign_neg.cc: Likewise.
        * testsuite/30_threads/shared_timed_mutex/cons/copy_neg.cc: Likewise.
        * testsuite/30_threads/shared_timed_mutex/requirements/
        standard_layout.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/2.cc: Likewise.
        * testsuite/30_threads/this_thread/3.cc: Likewise.
        * testsuite/30_threads/this_thread/4.cc: Likewise.
        * testsuite/30_threads/this_thread/58038.cc: Likewise.
        * testsuite/30_threads/thread/70503.cc: Likewise.
        * testsuite/30_threads/thread/84532.cc: Likewise.
        * testsuite/30_threads/thread/adl.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/84535.cc: Likewise.
        * testsuite/30_threads/thread/cons/9.cc: Likewise.
        * testsuite/30_threads/thread/cons/assign_neg.cc: Likewise.
        * testsuite/30_threads/thread/cons/copy_neg.cc: Likewise.
        * testsuite/30_threads/thread/cons/lwg2097.cc: Likewise.
        * testsuite/30_threads/thread/cons/moveable.cc: Likewise.
        * testsuite/30_threads/thread/cons/terminate.cc: Likewise.
        * testsuite/30_threads/thread/id/operators.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/cancel.cc: Likewise.
        * testsuite/30_threads/thread/swap/1.cc: Likewise.
        * testsuite/30_threads/timed_mutex/cons/1.cc: Likewise.
        * testsuite/30_threads/timed_mutex/cons/assign_neg.cc: Likewise.
        * testsuite/30_threads/timed_mutex/cons/copy_neg.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/requirements/
        standard_layout.cc: Likewise.
        * testsuite/30_threads/timed_mutex/requirements/typedefs.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.
        * testsuite/30_threads/unique_lock/requirements/
        explicit_instantiation.cc: Likewise.
        * testsuite/30_threads/unique_lock/requirements/typedefs.cc: Likewise.

        * testsuite/30_threads/async/42819.cc: Remove dg-require-cstdint
        directive.
        * testsuite/30_threads/async/49668.cc: Likewise.
        * testsuite/30_threads/async/54297.cc: Likewise.
        * testsuite/30_threads/async/84532.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/forced_unwind.cc: Likewise.
        * testsuite/30_threads/async/launch.cc: Likewise.
        * testsuite/30_threads/async/lwg2021.cc: Likewise.
        * testsuite/30_threads/async/sync.cc: 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/constexpr.cc: Likewise.
        * testsuite/30_threads/call_once/dr2442.cc: Likewise.
        * testsuite/30_threads/call_once/once_flag.cc: Likewise.
        * testsuite/30_threads/condition_variable/54185.cc: Likewise.
        * testsuite/30_threads/condition_variable/cons/1.cc: Likewise.
        * testsuite/30_threads/condition_variable/cons/assign_neg.cc:
        Likewise.
        * testsuite/30_threads/condition_variable/cons/copy_neg.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/requirements/
        standard_layout.cc: Likewise.
        * testsuite/30_threads/condition_variable/requirements/typedefs.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/cons/1.cc: Likewise.
        * testsuite/30_threads/condition_variable_any/cons/assign_neg.cc:
        Likewise.
        * testsuite/30_threads/condition_variable_any/cons/copy_neg.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/assign_neg.cc: Likewise.
        * testsuite/30_threads/future/cons/constexpr.cc: Likewise.
        * testsuite/30_threads/future/cons/copy_neg.cc: Likewise.
        * testsuite/30_threads/future/cons/default.cc: Likewise.
        * testsuite/30_threads/future/cons/move.cc: Likewise.
        * testsuite/30_threads/future/cons/move_assign.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/future/requirements/explicit_instantiation.cc:
        Likewise.
        * testsuite/30_threads/headers/condition_variable/types_std_c++0x.cc:
        Likewise.
        * testsuite/30_threads/headers/future/types_std_c++0x.cc: Likewise.
        * testsuite/30_threads/headers/mutex/types_std_c++0x.cc: Likewise.
        * testsuite/30_threads/headers/thread/std_c++0x_neg.cc: Likewise.
        * testsuite/30_threads/headers/thread/types_std_c++0x.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/lock_guard/cons/1.cc: Likewise.
        * testsuite/30_threads/lock_guard/requirements/
        explicit_instantiation.cc: Likewise.
        * testsuite/30_threads/lock_guard/requirements/typedefs.cc: Likewise.
        * testsuite/30_threads/mutex/cons/1.cc: Likewise.
        * testsuite/30_threads/mutex/cons/assign_neg.cc: Likewise.
        * testsuite/30_threads/mutex/cons/constexpr.cc: Likewise.
        * testsuite/30_threads/mutex/cons/copy_neg.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/requirements/standard_layout.cc::
        Likewise.
        * testsuite/30_threads/mutex/requirements/typedefs.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/once_flag/cons/constexpr.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/alloc2.cc: Likewise.
        * testsuite/30_threads/packaged_task/cons/alloc_min.cc: Likewise.
        * testsuite/30_threads/packaged_task/cons/assign_neg.cc: Likewise.
        * testsuite/30_threads/packaged_task/cons/copy_neg.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/packaged_task/requirements/
        explicit_instantiation.cc: Likewise.
        * testsuite/30_threads/packaged_task/uses_allocator.cc: Likewise.
        * testsuite/30_threads/promise/60966.cc: Likewise.
        * testsuite/30_threads/promise/69106.cc: Likewise.
        * testsuite/30_threads/promise/cons/1.cc: Likewise.
        * testsuite/30_threads/promise/cons/alloc.cc: Likewise.
        * testsuite/30_threads/promise/cons/alloc2.cc: Likewise.
        * testsuite/30_threads/promise/cons/alloc_min.cc: Likewise.
        * testsuite/30_threads/promise/cons/assign_neg.cc: Likewise.
        * testsuite/30_threads/promise/cons/copy_neg.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/promise/requirements/explicit_instantiation.cc:
        * Likewise.
        * testsuite/30_threads/promise/uses_allocator.cc: Likewise.

        * testsuite/18_support/numeric_limits/char16_32_t.cc: Qualify names
        from namespace std.
        * testsuite/20_util/align/2.cc: Remove dg-require-cstdint directive.
        * testsuite/20_util/duration/arithmetic/1.cc: Likewise.
        * testsuite/20_util/duration/arithmetic/2.cc: Likewise.
        * testsuite/20_util/duration/arithmetic/dr2020.cc: Likewise.
        * testsuite/20_util/duration/arithmetic/dr934-1.cc: Likewise.
        * testsuite/20_util/duration/arithmetic/dr934-2.cc: Likewise.
        * testsuite/20_util/duration/comparison_operators/1.cc: Likewise.
        * testsuite/20_util/duration/cons/1.cc: Likewise.
        * testsuite/20_util/duration/cons/1_neg.cc: Likewise.
        * testsuite/20_util/duration/cons/2.cc: Likewise.
        * testsuite/20_util/duration/cons/54025.cc: Likewise.
        * testsuite/20_util/duration/cons/dr974_neg.cc: Likewise.
        * testsuite/20_util/duration/requirements/explicit_instantiation/
        explicit_instantiation.cc: Likewise.
        * testsuite/20_util/duration/requirements/typedefs_neg1.cc: Likewise.
        * testsuite/20_util/duration/requirements/typedefs_neg2.cc: Likewise.
        * testsuite/20_util/duration/requirements/typedefs_neg3.cc: Likewise.
        * testsuite/20_util/make_signed/requirements/typedefs-4.cc: Likewise.
        * testsuite/20_util/ratio/comparisons/comp1.cc: Likewise.
        * testsuite/20_util/ratio/comparisons/comp2.cc: Likewise.
        * testsuite/20_util/ratio/comparisons/comp3.cc: Likewise.
        * testsuite/20_util/ratio/cons/cons1.cc: Likewise.
        * testsuite/20_util/ratio/operations/45866.cc: Likewise.
        * testsuite/20_util/ratio/operations/47913.cc: Likewise.
        * testsuite/20_util/ratio/operations/53840.cc: Likewise.
        * testsuite/20_util/ratio/operations/ops1.cc: Likewise.
        * testsuite/20_util/shared_ptr/atomic/3.cc: Likewise.
        * testsuite/20_util/system_clock/1.cc: Likewise.
        * testsuite/20_util/time_point/1.cc: Likewise.
        * testsuite/20_util/time_point/2.cc: Likewise.
        * testsuite/20_util/time_point/3.cc: Likewise.
        * testsuite/20_util/time_point/requirements/explicit_instantiation/
        explicit_instantiation.cc: Likewise.
        * testsuite/21_strings/basic_string/requirements/
        explicit_instantiation/char16_t/1.cc: Likewise.
        * testsuite/21_strings/basic_string/requirements/
        explicit_instantiation/char32_t/1.cc: Likewise.
        * testsuite/21_strings/basic_string_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/char_traits/requirements/
        explicit_instantiation/char16_t/1.cc: Likewise.
        * testsuite/21_strings/char_traits/requirements/
        explicit_instantiation/char32_t/1.cc: Likewise.
        * testsuite/21_strings/headers/string/types_std_c++0x.cc: Likewise.
        * testsuite/22_locale/codecvt/char16_t.cc: Likewise.
        * testsuite/22_locale/codecvt/char32_t.cc: Likewise.
        * testsuite/22_locale/codecvt/codecvt_utf16/requirements/1.cc:
        Likewise.
        * testsuite/22_locale/codecvt/codecvt_utf8/requirements/1.cc:
        Likewise.
        * testsuite/22_locale/codecvt/codecvt_utf8_utf16/requirements/1.cc:
        Likewise.
        * testsuite/22_locale/codecvt/utf8.cc: Likewise.
        * testsuite/23_containers/vector/bool/72847.cc: Likewise.
        * testsuite/23_containers/vector/debug/multithreaded_swap.cc:
        Likewise.
        * testsuite/experimental/string_view/requirements/
        explicit_instantiation/char16_t/1.cc: Likewise.
        * testsuite/experimental/string_view/requirements/
        explicit_instantiation/char32_t/1.cc: Likewise.
        * testsuite/ext/vstring/requirements/explicit_instantiation/char16_t/
        1.cc: Likewise.
        * testsuite/ext/vstring/requirements/explicit_instantiation/char32_t/
        1.cc: Likewise.

        * include/ext/throw_allocator.h [!_GLIBCXX_USE_C99_STDINT_TR1]
        (random_condition, throw_value_random, throw_allocator_random)
        (std::hash<throw_value_random>): Do not define when <tr1/random> is
        not usable.
        * src/c++11/cow-stdexcept.cc [!_GLIBCXX_USE_C99_STDINT_TR1]: Do not
        define transactional memory support when <stdint.h> is not usable.

        * include/bits/hashtable_policy.h (__detail::__clp2): Use faster
        implementation that doesn't depend on <stdint.h> types.
        * include/std/memory (align) [!_GLIBCXX_USE_C99_STDINT_TR1]: Use
        std::size_t when std::uintptr_t is not usable.
        [!_GLIBCXX_USE_C99_STDINT_TR1] (pointer_safety, declare_reachable)
        (undeclare_reachable, declare_no_pointers, undeclare_no_pointers):
        Define independent of _GLIBCXX_USE_C99_STDINT_TR1.

        * include/bits/basic_string.h [!_GLIBCXX_USE_C99_STDINT_TR1]
        (hash<u16string>, hash<u32string>): Remove dependency on
        _GLIBCXX_USE_C99_STDINT_TR1.
        * include/bits/char_traits.h [!_GLIBCXX_USE_C99_STDINT_TR1]
        (char_traits<char16_t>, char_traits<char32_t>): Remove dependency on
        _GLIBCXX_USE_C99_STDINT_TR1. Use __UINT_LEAST16_TYPE__ and
        __UINT_LEAST32_TYPE__ or make_unsigned when <stdint.h> is not usable.
        * include/bits/codecvt.h [!_GLIBCXX_USE_C99_STDINT_TR1]
        (codecvt<char16_t, char, mbstate_t>)
        (codecvt<char32_t, char, mbstate_t>)
        (codecvt_byname<char16_t, char, mbstate_t>)
        (codecvt_byname<char32_t, char, mbstate_t>): Remove dependency
        on _GLIBCXX_USE_C99_STDINT_TR1.
        * include/bits/locale_facets.h [!_GLIBCXX_USE_C99_STDINT_TR1]
        (_GLIBCXX_NUM_UNICODE_FACETS): Likewise.
        * include/bits/stringfwd.h [!_GLIBCXX_USE_C99_STDINT_TR1]
        (char_traits<char16_t>, char_traits<char32_t>)
        (basic_string<char16_t>, basic_string<char32_t>): Remove dependency
        on _GLIBCXX_USE_C99_STDINT_TR1.
        * include/experimental/string_view [!_GLIBCXX_USE_C99_STDINT_TR1]
        (u16string_view, u32string_view, hash<u16string_view>)
        (hash<u32string_view>, operator""sv(const char16_t, size_t))
        (operator""sv(const char32_t, size_t)): Likewise.
        * include/ext/vstring.h [!_GLIBCXX_USE_C99_STDINT_TR1]
        (hash<__u16vstring>, hash<__u32vstring>): Likewise.
        * include/ext/vstring_fwd.h [!_GLIBCXX_USE_C99_STDINT_TR1]
        (__u16vstring, __u16sso_string, __u16rc_string, __u32vstring)
        (__u32sso_string, __u32rc_string): Likewise.
        * include/std/codecvt [!_GLIBCXX_USE_C99_STDINT_TR1] (codecvt_mode)
        (codecvt_utf8, codecvt_utf16, codecvt_utf8_utf16): Likewise.
        * include/std/string_view [!_GLIBCXX_USE_C99_STDINT_TR1]
        (u16string_view, u32string_view, hash<u16string_view>)
        (hash<u32string_view>, operator""sv(const char16_t, size_t))
        (operator""sv(const char32_t, size_t)): Likewise.
        * src/c++11/codecvt.cc: Likewise.
        * src/c++98/locale_init.cc: Likewise.
        * src/c++98/localename.cc: Likewise.

        * include/bits/atomic_futex.h [!_GLIBCXX_USE_C99_STDINT_TR1]
        (__atomic_futex_unsigned_base): Remove dependency on
        _GLIBCXX_USE_C99_STDINT_TR1 macro.
        * include/bits/unique_lock.h [!_GLIBCXX_USE_C99_STDINT_TR1]
        (unique_lock): Remove dependency on _GLIBCXX_USE_C99_STDINT_TR1.
        * include/c_global/cstdint [!_GLIBCXX_USE_C99_STDINT_TR1] (intmax_t)
        (uintmax_t): Define using predefined macros.
        * include/std/chrono [!_GLIBCXX_USE_C99_STDINT_TR1] (duration)
        (time_point, system_clock, high_resolution_clock, steady_clock): Remove
        dependency on _GLIBCXX_USE_C99_STDINT_TR1 macro.
        (nanoseconds, microseconds, milliseconds, seconds, minutes, hours):
        [!_GLIBCXX_USE_C99_STDINT_TR1]: Define using __INT64_TYPE__ or
        long long when <stdint.h> is not usable.
        * include/std/condition_variable [!_GLIBCXX_USE_C99_STDINT_TR1]
        (condition_variable, condition_variable_any): Remove dependency on
        _GLIBCXX_USE_C99_STDINT_TR1.
        * include/std/future [!_GLIBCXX_USE_C99_STDINT_TR1] (future, promise)
        (packaged_task, async): Likewise.
        * include/std/mutex [!_GLIBCXX_USE_C99_STDINT_TR1] (recursive_mutex)
        (timed_mutex, recursive_timed_mutex, try_lock, lock, scoped_lock)
        (once_flag, call_once): Likewise.
        * include/std/ratio [!_GLIBCXX_USE_C99_STDINT_TR1] (ratio): Likewise.
        * include/std/shared_mutex [!_GLIBCXX_USE_C99_STDINT_TR1]
        (shared_mutex, shared_timed_mutex, shared_lock): Likewise.
        * include/std/thread [!_GLIBCXX_USE_C99_STDINT_TR1] (thread)
        (this_thread::get_id, this_thread::yield, this_thread::sleep_for)
        (this_thread::sleep_until): Likewise.
        * src/c++11/chrono.cc: Remove dependency on
        _GLIBCXX_USE_C99_STDINT_TR1 macro.
        * src/c++11/condition_variable.cc: Likewise.
        * src/c++11/futex.cc: Likewise.
        * src/c++11/future.cc: Likewise.
        * src/c++11/mutex.cc: Likewise.
        * src/c++11/thread.cc: Likewise.
        * testsuite/20_util/duration/literals/range_neg.cc: Adjust dg-error.
        * testsuite/20_util/duration/requirements/typedefs_neg1.cc: Likewise.
        * testsuite/20_util/duration/requirements/typedefs_neg2.cc: Likewise.
        * testsuite/20_util/duration/requirements/typedefs_neg3.cc: Likewise.
        * testsuite/20_util/ratio/cons/cons_overflow_neg.cc: Likewise.
        * testsuite/20_util/ratio/operations/ops_overflow_neg.cc: Likewise.

2018-07-26  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

        PR libstdc++/77691
        * testsuite/experimental/memory_resource/new_delete_resource.cc:
        xfail execution on 32-bit Solaris/x86.

2018-07-26  Marc Glisse  <marc.glisse@inria.fr>

        * include/bits/stl_vector.h (_Vector_impl_data::_M_copy_data): New.
        (_Vector_impl_data::_M_swap_data): Use _M_copy_data.
        (vector::_M_move_assign): Reorder the swaps.

2018-07-26  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/86676
        * testsuite/20_util/monotonic_buffer_resource/release.cc: Request
        same alignment for post-release allocation.

2018-07-25  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/86676
        * testsuite/20_util/monotonic_buffer_resource/release.cc: Allow for
        buffer being misaligned and so returned pointer not being at start.

        * include/experimental/memory_resource: Include <cstddef> header.

        * acinclude.m4 (glibcxx_SUBDIRS): Add src/c++17.
        * src/Makefile.am: Add comment.
        * src/c++17/Makefile.in: Regenerate.

        * include/Makefile.am: Add new <bits/unique_lock.h> header.
        * include/Makefile.in: Regenerate.
        * include/bits/std_mutex.h [!_GLIBCXX_USE_C99_STDINT_TR1] (mutex)
        (lock_guard): Define independent of _GLIBCXX_USE_C99_STDINT_TR1.
        (unique_lock): Move definition to ...
        * include/bits/unique_lock.h: New header.
        [!_GLIBCXX_USE_C99_STDINT_TR1] (unique_lock): Define unconditionally.
        [_GLIBCXX_USE_C99_STDINT_TR1] (unique_lock(mutex_type&, time_point))
        (unique_lock(mutex_type&, duration), unique_lock::try_lock_until)
        (unique_lock::try_lock_for): Define only when <chrono> is usable.
        * include/std/condition_variable: Include <bits/unique_lock.h>.
        * include/std/mutex: Likewise.

2018-07-24  Jonathan Wakely  <jwakely@redhat.com>

        * config/abi/pre/gnu.ver: Export new symbols.
        * configure: Regenerate.
        * include/Makefile.am: Add new <memory_resource> header.
        * include/Makefile.in: Regenerate.
        * include/precompiled/stdc++.h: Include <memory_resource> for C++17.
        * include/std/memory_resource: New header.
        (memory_resource, polymorphic_allocator, new_delete_resource)
        (null_memory_resource, set_default_resource, get_default_resource)
        (pool_options, monotonic_buffer_resource): Define.
        * src/Makefile.am: Add c++17 directory.
        * src/Makefile.in: Regenerate.
        * src/c++11/Makefile.am: Fix comment.
        * src/c++17/Makefile.am: Add makefile for new sub-directory.
        * src/c++17/Makefile.in: Generate.
        * src/c++17/memory_resource.cc: New.
        (newdel_res_t, null_res_t, constant_init, newdel_res, null_res)
        (default_res, new_delete_resource, null_memory_resource)
        (set_default_resource, get_default_resource): Define.
        * testsuite/20_util/memory_resource/1.cc: New test.
        * testsuite/20_util/memory_resource/2.cc: New test.
        * testsuite/20_util/monotonic_buffer_resource/1.cc: New test.
        * testsuite/20_util/monotonic_buffer_resource/allocate.cc: New test.
        * testsuite/20_util/monotonic_buffer_resource/deallocate.cc: New test.
        * testsuite/20_util/monotonic_buffer_resource/release.cc: New test.
        * testsuite/20_util/monotonic_buffer_resource/upstream_resource.cc:
        New test.
        * testsuite/20_util/polymorphic_allocator/1.cc: New test.
        * testsuite/20_util/polymorphic_allocator/resource.cc: New test.
        * testsuite/20_util/polymorphic_allocator/select.cc: New test.
        * testsuite/util/testsuite_allocator.h (__gnu_test::memory_resource):
        Define concrete memory resource for testing.
        (__gnu_test::default_resource_mgr): Define RAII helper for changing
        default resource.

        PR libstdc++/86658
        * include/bits/stl_algobase.h (__niter_wrap<_Iterator>): Pass unused
        parameter by reference, to avoid copying invalid iterators.
        * testsuite/25_algorithms/copy/86658.cc: New test.

        * include/std/bit (__countl_zero, __countr_zero, __popcount): Use
        local variables for number of digits instead of type aliases.
        (__log2p1): Remove redundant branch also checked in __countl_zero.

        * include/bits/uses_allocator.h (__is_erased_or_convertible): Reorder
        conditions. Add comments.
        * testsuite/20_util/uses_allocator/69293_neg.cc: Adjust dg-error line.
        * testsuite/20_util/uses_allocator/cons_neg.cc: Likewise.
        * testsuite/20_util/scoped_allocator/69293_neg.cc: Likewise.

        * include/bits/uses_allocator.h (__is_erased_or_convertible): Remove.
        (__uses_allocator_helper): Check conditions directly instead of
        using __is_erased_or_convertible.

        * include/experimental/memory_resource: Adjust comments and
        whitespace.
        (__resource_adaptor_imp): Add second template parameter for type of
        memory resource base class.
        (memory_resource): Define default constructor, destructor, copy
        constructor and copy assignment operator as defaulted.

        PR libstdc++/70966
        * include/experimental/memory_resource (__get_default_resource): Use
        placement new to create an object with dynamic storage duration.

2018-07-23  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/70940
        * include/experimental/memory_resource
        (__resource_adaptor_common::_AlignMgr::_M_unadjust): Add assertion.
        (__resource_adaptor_common::__guaranteed_alignment): New helper to
        give maximum alignment an allocator guarantees. Specialize for known
        allocators using new and malloc.
        (__resource_adaptor_imp::do_allocate): Use __guaranteed_alignment.
        (__resource_adaptor_imp::do_deallocate): Likewise.
        * testsuite/experimental/memory_resource/new_delete_resource.cc:
        Check that new and delete are called with expected sizes.

2018-07-20  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/86595
        * include/bits/fs_dir.h (directory_entry::refresh(error_code&)): Add
        noexcept.

2018-07-20  Fangrui Song  <maskray@google.com>

        * include/bits/shared_ptr_base.h (_Sp_make_shared_tag::_S_ti): Use
        _GLIBCXX_VISIBILITY(default).

2018-07-20  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/86603
        * include/std/version: Move __cpp_lib_list_remove_return_type macro.

2018-07-19  Jonathan Wakely  <jwakely@redhat.com>

        * include/std/type_traits (__is_member_object_pointer_helper): Use
        __not_<is_function<_Tp>>::type instead of integral_constant.
        (__is_member_function_pointer_helper): Likewise for
        is_function<_Tp>::type.
        (is_compund): Likewise for __not_<is_fundamental<_Tp>>::type.
        (__do_is_nt_destructible_impl): Use __bool_constant and reindent.
        (is_trivially_constructible): Remove redundant use of
        is_constructible.
        (__is_trivially_copy_assignable_impl): Remove redundant use of
        is_copy_assignable.
        (__is_trivially_move_assignable_impl): Remove redundant use of
        is_move_assignable.
        (is_trivially_destructible): Use __bool_constant.
        * testsuite/20_util/is_trivially_assignable/value.cc: Add some more
        tests for scalar types.

2018-07-19  Glen Joseph Fernandes  <glenjofe@gmail.com>

        * include/bits/stl_algobase.h (__copy_move_a): Used
        __is_trivially_copyable.
        (__copy_move_backward_a): Likewise.
        * testsuite/20_util/specialized_algorithms/uninitialized_copy/1.cc:
        New test.

2018-07-17  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/86450
        * acinclude.m4 (GLIBCXX_CHECK_COMPILER_FEATURES): Don't define WERROR.
        (GLIBCXX_EXPORT_FLAGS): Use -Wabi=2 instead of -Wabi.
        * configure: Regenerate.
        * configure.ac: Change GLIBCXX_ENABLE_WERROR default to "no".
        * doc/Makefile.in: Regenerate.
        * fragment.am: Set WERROR_FLAG to -Werror instead of $(WERROR).
        * 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++11/debug.cc: Use diagnostic pragmas to suppress warnings
        from -Wabi=2 that don't affect exported symbols.
        * src/c++98/Makefile.in: Regenerate.
        * src/filesystem/Makefile.in: Regenerate.
        * testsuite/Makefile.in: Regenerate.

        * src/c++11/compatibility-thread-c++0x.cc [_GLIBCXX_SHARED]
        (_Async_state_common::_M_join): Simplify use of std::call_once and
        corresponding explicit instantiation.
        (_Maybe_wrap_member_pointer, _Bind_simple, _Bind_simple_helper)
        (__bind_simple): Remove definitions and explicit instantiation that
        are not required by exported symbols.

2018-07-16  Jonathan Wakely  <jwakely@redhat.com>

        * scripts/create_testsuite_files: Fix typo in comment.

        PR libstdc++/86537
        * include/bits/shared_ptr.h (less<shared_ptr<_Tp>>): Remove
        non-standard partial specialization.
        * include/bits/shared_ptr_base.h (_Sp_less): Remove class definition.
        (less<__shared_ptr<_Tp, _Lp>): Remove partial specialization.
        * testsuite/20_util/shared_ptr/comparison/86537.cc: New test.

2018-07-16  Andreas Krebbel  <krebbel@linux.ibm.com>

        * config/abi/post/s390-linux-gnu/baseline_symbols.txt: Update.
        * config/abi/post/s390x-linux-gnu/32/baseline_symbols.txt: Update.
        * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.

2018-07-06  François Dumont  <fdumont@gcc.gnu.org>

        * include/debug/functions.h (__gnu_debug::__check_string): Move...
        * include/debug/string (__gnu_debug::__check_string): ... here.
        (_GLIBCXX_DEBUG_VERIFY_STR_COND_AT): New.
        (__glibcxx_check_string_n_constructor): New.
        (__gnu_debug::basic_string<>(const _CharT*, size_type, const _Alloc&)):
        Use latter.
        (__glibcxx_check_string_constructor): New.
        (__gnu_debug::basic_string<>(const _CharT*, const _Alloc&)):
        Use latter.
        * testsuite/21_strings/basic_string/debug/1_neg.cc: New.
        * testsuite/21_strings/basic_string/debug/2_neg.cc: New.

2018-07-06  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/84928 use std::move in <numeric> algorithms
        * include/bits/stl_numeric.h (_GLIBCXX_MOVE_IF_20): Define macro to
        conditionally move, according to __cplusplus value.
        (accumulate, inner_product, partial_sum, adjacent_difference): Use
        _GLIBCXX_MOVE_IF_20.
        * testsuite/26_numerics/accumulate/lwg2055.cc: New test.
        * testsuite/26_numerics/adjacent_difference/lwg2055.cc: New test.
        * testsuite/26_numerics/inner_product/lwg2055.cc: New test.
        * testsuite/26_numerics/partial_sum/lwg2055.cc: New test.

        * config/abi/pre/gnu.ver: Use wildcards to combine related patterns.

        P0935R0 Eradicating unnecessarily explicit default constructors
        * config/abi/pre/gnu.ver: Tighten existing patterns and export new
        default constructor symbols.
        * include/std/sstream (basic_stringbuf, basic_istringstream)
        (basic_ostringstream, basic_stringstream): Remove default arguments
        from explicit constructors taking ios_base::openmode and add separate
        non-explicit default constructors.
        * testsuite/27_io/basic_istringstream/cons/default.cc: New.
        * testsuite/27_io/basic_ostringstream/cons/default.cc: New.
        * testsuite/27_io/basic_stringstream/cons/default.cc: New.
        * testsuite/27_io/basic_stringbuf/cons/char/default.cc: New.
        * testsuite/27_io/basic_stringbuf/cons/wchar_t/default.cc: New.

        * include/std/variant (__accepted_index): Use void_t.

2018-07-05  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/85831
        * config/abi/pre/gnu.ver: Export move constructors and move
        assignment operators for std::logic_error and std::runtime_error.
        * include/std/stdexcept: Use _GLIBCXX_NOTHROW instead of
        _GLIBCXX_USE_NOEXCEPT.
        (logic_error, runtime_error): Declare move constructors and move
        assignment operators. When not declared already, define copy
        constructors and copy assignment operators as explicit-defaulted.
        (domain_error, invalid_argument, length_error, out_of_range)
        (overflow_error, underflow_error): Define move constructors and move
        assignment operators as explicitly-defaulted.
        * libsupc++/exception.h (exception): Likewise.
        * src/c++11/cow-stdexcept.cc (logic_error, runtime_error): Define
        move constructors and move assignment operators as defaulted.
        * testsuite/19_diagnostics/stdexcept.cc: Check that constructors and
        assignment operators are defined.

        * testsuite/21_strings/basic_string/cons/char/deduction.cc: XFAIL for
        COW strings.
        * testsuite/21_strings/basic_string/cons/wchar_t/deduction.cc:
        Likewise.
        * testsuite/21_strings/basic_string/requirements/
        explicit_instantiation/debug.cc: Likewise.

        PR libstdc++/58265
        * include/bits/basic_string.h [!_GLIBCXX_USE_CXX11_ABI]
        (basic_string::assign(basic_string&&)): Add conditional noexcept
        depending on the allocator's is_always_equal property (LWG 2063).
        * testsuite/21_strings/basic_string/modifiers/assign/char/
        move_assign.cc: Check for non-throwing exception specification.
        * testsuite/21_strings/basic_string/modifiers/assign/wchar_t/
        move_assign.cc: Likewise.

        PR libstdc++/58265
        * include/bits/basic_string.h [!_GLIBCXX_USE_CXX11_ABI]
        [_GLIBCXX_FULLY_DYNAMIC_STRING==0] (basic_string::basic_string()):
        Add GLIBCXX_NOEXCEPT.
        (basic_string::operator=(basic_string&&)): Add _GLIBCXX_NOEXCEPT_IF
        to depend on the allocator's is_always_equal property (LWG 2063).
        (basic_string::swap(basic_string&)): Likewise.
        * include/bits/basic_string.tcc [!_GLIBCXX_USE_CXX11_ABI]
        (basic_string::swap(basic_string&)): Likewise.
        * testsuite/21_strings/basic_string/allocator/char/move_assign.cc:
        Check is_nothrow_move_assignable.
        * testsuite/21_strings/basic_string/allocator/wchar_t/move_assign.cc:
        Check is_nothrow_move_assignable.
        * testsuite/21_strings/basic_string/cons/char/
        noexcept_move_construct.cc: Likewise.
        * testsuite/21_strings/basic_string/cons/wchar_t/
        noexcept_move_construct.cc: Likewise.

2018-07-04  Jonathan Wakely  <jwakely@redhat.com>

        P0646R1 Improving the Return Value of Erase-Like Algorithms I
        * include/bits/forward_list.h (__cpp_lib_list_remove_return_type):
        Define.
        (forward_list::__remove_return_type): Define typedef as size_type or
        void, according to __cplusplus value.
        (_GLIBCXX_FWDLIST_REMOVE_RETURN_TYPE_TAG): Define macro as abi-tag or
        empty, according to __cplusplus value.
        (forward_list::remove, forward_list::unique): Use typedef and macro
        to change return type and add abi-tag for C++2a.
        (forward_list::remove_if<Pred>, forward_list::unique<BinPred>): Use
        typedef to change return type for C++2a.
        * include/bits/forward_list.tcc (_GLIBCXX20_ONLY): Define macro.
        (forward_list::remove, forward_list::remove_if<Pred>)
        (forward_list::unique<BinPred>): Return number of removed elements
        for C++2a.
        * include/bits/list.tcc (_GLIBCXX20_ONLY): Define macro.
        (list::remove, list::unique, list::remove_if<Predicate>)
        (list::unique<BinaryPredicate>): Return number of removed elements
        for C++2a.
        * include/bits/stl_list.h (__cpp_lib_list_remove_return_type): Define.
        (list::__remove_return_type): Define typedef as size_type or
        void, according to __cplusplus value.
        (_GLIBCXX_LIST_REMOVE_RETURN_TYPE_TAG): Define macro as abi-tag or
        empty, according to __cplusplus value.
        (list::remove, list::unique): Use typedef and macro to change return
        type and add abi-tag for C++2a.
        (list::remove_if<Predicate>, list::unique<BinaryPredicate>): Use
        typedef to change return type for C++2a.
        * include/std/version (__cpp_lib_list_remove_return_type): Define.
        * testsuite/23_containers/forward_list/operations/
        remove_cxx20_return.cc: New.
        * testsuite/23_containers/forward_list/operations/
        unique_cxx20_return.cc: New.

        P0458R2 Checking for Existence of an Element in Associative Containers
        * include/bits/stl_map.h (map::contains): Add for C++2a.
        * include/bits/stl_multimap.h (multimap::contains): Likewise.
        * include/bits/stl_multiset.h (multiset::contains): Likewise.
        * include/bits/stl_set.h (set::contains): Likewise.
        * include/bits/stl_tree.h (__has_is_transparent_t): Define alias.
        (_Rb_tree::_M_find_tr, _Rb_tree::_M_count_tr)
        (_Rb_tree::_M_lower_bound_tr, _Rb_tree::_M_upper_bound_tr)
        (_Rb_tree::_M_equal_range_tr): Use __has_is_transparent_t.
        * include/bits/unordered_map.h (unordered_map::contains)
        (unordered_multimap::contains): Add for C++2a.
        * include/bits/unordered_set.h (unordered_set::contains)
        (unordered_multiset::contains): Likewise.
        * testsuite/23_containers/map/operations/contains.cc: New.
        * testsuite/23_containers/multimap/operations/contains.cc: New.
        * testsuite/23_containers/multiset/operations/contains.cc: New.
        * testsuite/23_containers/set/operations/contains.cc: New.
        * testsuite/23_containers/unordered_map/operations/contains.cc: New.
        * testsuite/23_containers/unordered_multimap/operations/contains.cc:
        New.
        * testsuite/23_containers/unordered_multiset/operations/contains.cc:
        New.
        * testsuite/23_containers/unordered_set/operations/contains.cc: New.

2018-07-04  François Dumont  <fdumont@gcc.gnu.org>

        PR libstdc++/86272
        * include/debug/string
        (__gnu_debug::basic_string<>::insert<_Ite>(const_iterator, _Ite, _Ite)):
        Use __glibcxx_check_insert_range.
        * 21_strings/basic_string/cons/char/1.cc: Adapt test to use
        __gnu_debug::string when _GLIBCXX_DEBUG.
        * 21_strings/basic_string/init-list.cc: Likewise.
        * 21_strings/basic_string/modifiers/insert/char/1.cc: Likewise.
        * 21_strings/basic_string/modifiers/insert/char/2.cc: Likewise.
        * 21_strings/basic_string/modifiers/insert/char/83328.cc: Likewise.
        * 21_strings/basic_string/types/1.cc: Likewise.

2018-07-04  Jonathan Wakely  <jwakely@redhat.com>

        * testsuite/25_algorithms/make_heap/complexity.cc: Require effective
        target for std::random_device.
        * testsuite/26_numerics/random/random_device/cons/default.cc:
        Likewise.
        * testsuite/experimental/algorithm/sample-2.cc: Likewise.
        * testsuite/experimental/algorithm/shuffle.cc: Likewise.
        * testsuite/experimental/random/randint.cc: Likewise.
        * testsuite/lib/libstdc++.exp
        (check_effective_target_random_device): New proc.

2018-07-04  Jonathan Wakely  <jwakely@redhat.com>
            Jakub Jelinek  <jakub@redhat.com>

        * include/std/bit (__rotl, __rotr): Fix for non-power of two sizes.

2018-07-04  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/86398
        * include/std/type_traits (is_trivially_constructible): Check
        is_constructible before __is_trivially_constructible.
        * testsuite/20_util/is_trivially_constructible/value.cc: Add more
        tests, including negative cases.
        * testsuite/20_util/make_signed/requirements/typedefs_neg.cc: Use
        zero for dg-error lineno.
        * testsuite/20_util/make_unsigned/requirements/typedefs_neg.cc:
        Likewise.

        * include/std/bit (__rotl, __rotr): Avoid branch.
        (_If_is_unsigned_integer): Use remove_cv_t.
        * testsuite/26_numerics/bit/bitops.count/popcount.cc: New.

2018-07-03  Jonathan Wakely  <jwakely@redhat.com>

        P0556R3 Integral power-of-2 operations, P0553R2 Bit operations
        * include/Makefile.am: Add new header.
        * include/Makefile.in: Regenerate.
        * include/precompiled/stdc++.h: Include new header.
        * include/std/bit: New header.
        (__rotl, __rotr, __countl_zero, __countl_one, __countr_zero)
        (__countr_one, __popcount, __ispow2, __ceil2, __floor2, __log2p1):
        Define for C++14.
        [!__STRICT_ANSI__] (rotl, rotr, countl_zero, countl_one, countr_zero)
        (countr_one, popcount): Define for C++2a. Also overload for std::byte.
        (ispow2, ceil2, floor2, log2p1): Define for C++2a.
        [!__STRICT_ANSI__] (ispow2, ceil2, floor2, log2p1): Overload for
        std::byte.
        * testsuite/26_numerics/bit/bit.pow.two/ceil2.cc: New.
        * testsuite/26_numerics/bit/bit.pow.two/floor2.cc: New.
        * testsuite/26_numerics/bit/bit.pow.two/ispow2.cc: New.
        * testsuite/26_numerics/bit/bit.pow.two/log2p1.cc: New.
        * testsuite/26_numerics/bit/bitops.rot/rotl.cc: New.
        * testsuite/26_numerics/bit/bitops.rot/rotr.cc: New.
        * testsuite/26_numerics/bit/bitops.count/countl_one.cc: New.
        * testsuite/26_numerics/bit/bitops.count/countl_zero.cc: New.
        * testsuite/26_numerics/bit/bitops.count/countr_one.cc: New.
        * testsuite/26_numerics/bit/bitops.count/countr_zero.cc: New.

        * include/bits/alloc_traits.h: Remove redundant preprocessor
        condition.

2018-07-03  François Dumont  <fdumont@gcc.gnu.org>

        * include/bits/stl_algobase.h (__niter_wrap): New.
        (__copy_move_a2(_II, _II, _OI)): Use latter.
        (__copy_move_backward_a2(_BI1, _BI1, _BI2)): Likewise.
        (fill_n(_OI, _Size, const _Tp&)): Likewise.
        (equal(_II1, _II1, _II2)): Use __glibcxx_requires_can_increment.
        * include/debug/stl_iterator.h
        (std::__niter_base(const __gnu_cxx::_Safe_iterator<
        __gnu_cxx::__normal_iterator<>, _Sequence>&)): New declaration.
        * include/debug/vector (__niter_base(const __gnu_cxx::_Safe_iterator<
        __gnu_cxx::__normal_iterator<>, _Sequence>&)): New.

2018-07-02  Jonathan Wakely  <jwakely@redhat.com>

        P0758R1 Implicit conversion traits
        * include/std/type_traits [__cplusplus > 201703]
        (__is_convertible_helper::__is_nothrow_type): Define new member.
        (__is_convertible_helper<_From, _To, false>::__test_aux1): Add
        noexcept.
        (__is_convertible_helper<_From, _To, false>::__test_nothrow)
        (__is_convertible_helper<_From, _To, false>::__is_nothrow_type): Add
        new members.
        (is_nothrow_convertible, is_nothrow_convertible_v): Define for C++2a.
        * testsuite/20_util/is_nothrow_convertible/value.cc: New.
        * testsuite/20_util/is_nothrow_convertible/requirements/
        explicit_instantiation.cc: New.
        * testsuite/20_util/is_nothrow_convertible/requirements/typedefs.cc:
        New.

        P0887R1 The identity metafunction
        * include/std/type_traits (type_identity, type_identity_t): Define
        for C++2a.
        * testsuite/20_util/type_identity/requirements/alias_decl.cc: New.
        * testsuite/20_util/type_identity/requirements/
        explicit_instantiation.cc:New.
        * testsuite/20_util/type_identity/requirements/typedefs.cc: New.

        * include/bits/regex.h (sub_match::operator string_type): Call str().
        (sub_match::compare): Use _M_str() instead of str().
        (sub_match::_M_compare): New public function.
        (sub_match::__string_view): New helper type.
        (sub_match::_M_str): New overloaded functions to avoid creating a
        string_type object when not needed.
        (operator==, operator!=, operator<, operator>, operator<=, operator>=):
        Use sub_match::_M_compare instead of creating string_type objects.
        Fix Doxygen comments.
        * include/bits/regex_compiler.h (__has_contiguous_iter): Remove.
        (__is_contiguous_normal_iter): Rename to __is_contiguous_iter and
        simplify.
        (__enable_if_contiguous_iter, __disable_if_contiguous_iter): Use
        __enable_if_t.
        * include/std/type_traits (__enable_if_t): Define for C++11.
        * testsuite/28_regex/sub_match/compare.cc: New.
        * testsuite/util/testsuite_iterators.h (remove_cv): Add transformation
        trait.
        (input_iterator_wrapper): Use remove_cv for value_type argument of
        std::iterator base class.

2018-06-29  Jonathan Wakely  <jwakely@redhat.com>

        * testsuite/20_util/add_rvalue_reference/requirements/alias_decl.cc:
        Add whitespace to dejagnu directive.
        * testsuite/23_containers/array/element_access/at_neg.cc: Likewise.

2018-06-27  François Dumont  <fdumont@gcc.gnu.org>

        * include/bits/stl_vector.h
        (struct _Vector_base<>::_Vector_impl_data): New.
        (struct _Vector_base<>::_Vector_impl): Inherit from latter.
        (_Vector_base<>::_Vector_impl::_M_swap_data): Move...
        (_Vector_base<>::_Vector_impl_data::_M_swap_data): ...here.
        (_Vector_base<>::_Vector_impl()): Add noexcept qualification.
        (_Vector_base<>::_Vector_impl(_Vector_impl&&)): New.
        (_Vector_base<>::_Vector_impl(_Tp_alloc_type&&, _Vector_impl&&)): New.
        (_Vector_base(const allocator_type&, _Vector_base&&)): New, use latter.
        (_Vector_base()): Default.
        (_Vector_base(_Vector_base&&)): Default.
        (_Vector_base(size_t)) [_GLIBCXX_INLINE_VERSION]: Delete.
        (_Vector_base(_Tp_alloc_type&&)) [_GLIBCXX_INLINE_VERSION]: Delete.
        (_Vector_base::_M_create_storage(size_t)): Make protected.
        (vector()): Default.
        (vector(vector&&)): Default.
        (vector(vector&&, const allocator_type&, true_type)): New.
        (vector(vector&&, const allocator_type&, false_type)): New.
        (vector(vector&&, const allocator_type&)): Use latters.
        (vector(_InputIte, _InputIte, const allocator_type&)): Call
        _M_range_initialize directly.
        * include/debug/vector
        (vector(vector&&, const allocator_type&)): Add noexcept qualification.
        * testsuite/23_containers/vector/allocator/default_init.cc: New.
        * testsuite/23_containers/vector/cons/noexcept_move_construct.cc: Add
        static assertions.

2018-06-27  Jonathan Wakely  <jwakely@redhat.com>

        * include/bits/cpp_type_traits.h [__cplusplus >= 201703]
        (__is_byte<byte>): Define specialization for std::byte.

        PR libstdc++/86138
        * include/bits/basic_string.tcc: [_GLIBCXX_EXTERN_TEMPLATE < 0]
        Declare explicit instantiations of COW empty reps and I/O functions.

2018-06-26  David Edelsohn  <dje.gcc@gmail.com>

        * testsuite/experimental/algorithm/sample-2.cc: Add TLS DejaGNU
        directives.
        * testsuite/experimental/algorithm/shuffle.cc: Likewise.

2018-06-26  Jonathan Wakely  <jwakely@redhat.com>

        * include/bits/regex.tcc (regex_iterator::operator==): Add missing
        noexcept.

2018-06-25  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/86112
        * python/libstdcxx/v6/printers.py (add_one_template_type_printer):
        Replace dict comprehension.

        PR libstdc++/81092
        * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.

        PR libstdc++/86292
        * include/bits/stl_vector.h (vector::_M_range_initialize<InputIter>):
        Add try-catch block.
        * testsuite/23_containers/vector/cons/86292.cc: New.

        * doc/xml/manual/status_cxx2017.xml: Document N4531 status.

        * include/experimental/algorithm (sample, shuffle): Add new overloads
        using per-thread random number engine.
        * testsuite/experimental/algorithm/sample.cc: Simpify and reduce
        dependencies by using __gnu_test::test_container.
        * testsuite/experimental/algorithm/sample-2.cc: New.
        * testsuite/experimental/algorithm/shuffle.cc: New.

2018-06-22  Jonathan Wakely  <jwakely@redhat.com>

        * config/abi/pre/gnu.ver: Fix __cxx11::basic_string patterns for
        different size_t mangling on 32-bit targets.

        PR libstdc++/86280
        * include/experimental/memory_resource
        (__resource_adaptor_common::_AlignMgr::_M_token_size): Use type large
        enough for result of left shift.

        PR libstdc++/86138
        * include/bits/basic_string.tcc:
        [__cplusplus > 201402 && !_GLIBCXX_USE_CXX11_ABI]
        (basic_string<char>::_Rep::_S_empty_rep_storage)
        (basic_string<wchar_t>::_Rep::_S_empty_rep_storage): Add explicit
        instantiation declarations.
        [__cplusplus > 201402] (operator>>, operator<<, getline): Re-enable
        explicit instantiation declarations.
        * testsuite/21_strings/basic_string/cons/char/86138.cc: New.
        * testsuite/21_strings/basic_string/cons/wchar_t/86138.cc: New.

2018-06-21  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/83328
        * acinclude.m4 (libtool_VERSION): Bump to 6:26:0.
        * config/abi/pre/gnu.ver: Add GLIBCXX_3.4.26 and export new symbol.
        * configure: Regenerate.
        * include/bits/basic_string.h [_GLIBCXX_USE_CXX11_ABI]
        (basic_string::insert(const_iterator, initializer_list<C>)): Add.
        [_GLIBCXX_USE_CXX11_ABI && !_GLIBCXX_DEFINING_STRING_INSTANTIATIONS]
        (basic_string::insert(iterator, initializer_list<C>)): Suppress
        definition.
        * include/debug/string (basic_string::insert(iterator, C)): Change
        first parameter to const_iterator.
        (basic_string::insert(iterator, size_type, C)): Likewise. Change
        return type to iterator.
        (basic_string::insert(iterator, InputIterator, InputIterator)):
        Likewise.
        (basic_string::insert(iterator, initializer_list<C>)): Change first
        parameter to const_iterator and return type to iterator.
        * src/c++11/string-inst.cc: Extend comment.
        * testsuite/21_strings/basic_string/modifiers/insert/char/83328.cc:
        New.
        * testsuite/21_strings/basic_string/modifiers/insert/wchar_t/83328.cc:
        New.
        * testsuite/util/testsuite_abi.cc: Add new symbol version.

        * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.

        PR libstdc++/70940
        * include/experimental/memory_resource
        (__resource_adaptor_imp::do_deallocate): Add missing return.
        * testsuite/experimental/memory_resource/new_delete_resource.cc: New.
        * testsuite/experimental/memory_resource/resource_adaptor.cc: Test
        resource_adaptor with std::allocator, __gnu_cxx::new_allocator and
        __gnu_cxx::malloc_allocator.

        PR libstdc++/70940
        * include/experimental/memory_resource (__resource_adaptor_common):
        New base class.
        (__resource_adaptor_common::_AlignMgr): Helper for obtaining aligned
        pointer from unaligned, and vice versa.
        (__resource_adaptor_imp::do_allocate): Use _AlignMgr to adjust
        allocated pointer to meet alignment request.
        (__resource_adaptor_imp::do_deallocate): Use _AlignMgr to retrieve
        original pointer for deallocation.
        (__resource_adaptor_imp::do_is_equal): Reformat.
        (__resource_adaptor_imp::_S_aligned_size): Remove.
        (__resource_adaptor_imp::_S_supported): Remove.
        (new_delete_resource): Use __gnu_cxx::new_allocator.
        * testsuite/experimental/memory_resource/resource_adaptor.cc: Test
        extended alignments and use debug_allocator to check for matching
        allocate/deallocate pairs.

2018-06-21  François Dumont  <fdumont@gcc.gnu.org>

        * include/debug/safe_iterator.h
        (_Safe_iterator<>(const _Safe_iterator<_MutableIterator,>& __x)):
        Compare __x base iterator with a value-initialized iterator of the
        same type.

2018-06-20  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/70966
        * include/experimental/memory_resource (__resource_adaptor_imp): Add
        static assertions to enforce requirements on pointer types.
        (__resource_adaptor_imp::get_allocator()): Add noexcept.
        (new_delete_resource, null_memory_resource): Return address of an
        object with dynamic storage duration.
        (__null_memory_resource): Remove.
        * testsuite/experimental/memory_resource/70966.cc: New.

        * testsuite/20_util/duration/arithmetic/dr3050.cc: Add new test
        missed from recent commit.

2018-06-19  Jonathan Wakely  <jwakely@redhat.com>

        * include/std/utility: Remove unused <exception> header.

2018-06-18  Jonathan Wakely  <jwakely@redhat.com>

        LWG 2975 ensure construct(pair<T,U>*, ...) used to construct pairs
        * include/std/scoped_allocator (__not_pair): Define SFINAE helper.
        (construct(_Tp*, _Args&&...)): Remove from overload set when _Tp is
        a specialization of std::pair.
        * testsuite/20_util/scoped_allocator/construct_pair.cc: Ensure
        pair elements are constructed correctly.

        LWG 2989 hide path iostream operators from normal lookup
        * include/bits/fs_path.h (operator<<, operator>>): Define inline as
        friends.
        * testsuite/27_io/filesystem/path/io/dr2989.cc: New.

        LWG 3050 Fix cv-qualification of convertibility constraints
        * include/std/chrono (duration, operator*, operator/, operator%): Use
        const-qualified type as source type in is_convertible constraints.
        * testsuite/20_util/duration/arithmetic/dr3050.cc: New.
        * testsuite/20_util/duration/cons/dr3050.cc: New.
        * testsuite/20_util/duration/literals/range.cc: Rename to...
        * testsuite/20_util/duration/literals/range_neg.cc: Here. Adjust
        dg-error lineno.

2018-06-18  Maya Rashish  <coypu@sdf.org>

        * crossconfig.m4: Handle OpenBSD just like NetBSD.
        * configure: Rebuilt.

2018-06-18  Jonathan Wakely  <jwakely@redhat.com>

        P0754R2 <version> header
        * include/Makefile.am: Add new header.
        * include/Makefile.in: Regenerate.
        * include/bits/c++config: Change doxygen comment to suggest <version>
        instead of <iosfwd>.
        * include/precompiled/stdc++.h: Include <cwchar> and <cwctype>
        unconditionally.  Add C++17 and C++20 headers.
        * include/std/version: New header.
        * testsuite/17_intro/headers/c++2017/all_attributes.cc: New.
        * testsuite/17_intro/headers/c++2017/all_no_exceptions.cc: New.
        * testsuite/17_intro/headers/c++2017/all_no_rtti.cc: New.
        * testsuite/17_intro/headers/c++2017/all_pedantic_errors.cc: New.
        * testsuite/17_intro/headers/c++2017/operator_names.cc: New.
        * testsuite/17_intro/headers/c++2017/stdc++.cc: New.
        * testsuite/17_intro/headers/c++2017/stdc++_multiple_inclusion.cc:
        New.
        * testsuite/17_intro/headers/c++2020/all_attributes.cc: New.
        * testsuite/17_intro/headers/c++2020/all_no_exceptions.cc: New.
        * testsuite/17_intro/headers/c++2020/all_no_rtti.cc: New.
        * testsuite/17_intro/headers/c++2020/all_pedantic_errors.cc: New.
        * testsuite/17_intro/headers/c++2020/operator_names.cc: New.
        * testsuite/17_intro/headers/c++2020/stdc++.cc: New.
        * testsuite/17_intro/headers/c++2020/stdc++_multiple_inclusion.cc:
        New.
        * testsuite/18_support/headers/version/macros.cc: New.
        * testsuite/18_support/headers/version/macros.cc: New.

        * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Only check when
        enable_libstdcxx_filesystem_ts = yes. Check for link, readlink and
        symlink.
        * config.h.in: Regenerate.
        * configure: Regenerate.
        * configure.ac: Remove AC_CHECK_FUNCS for link, readlink and symlink.

        LWG 3035. std::allocator's constructors should be constexpr
        * include/bits/allocator.h (allocator): Add constexpr to constructors
        for C++2a. Replace dynamic exception specifications with NOTHROW
        macro.
        (allocator, operator==, operator!=): Replace USE_NOEXCEPT macro with
        NOTHROW.
        * include/bits/c++config (_GLIBCXX20_CONSTEXPR): Define.
        * include/ext/malloc_allocator.h (malloc_allocator): Add constexpr
        to constructors for C++2a.
        * include/ext/new_allocator.h (new_allocator): Likewise.

2018-06-16  Jonathan Wakely  <jwakely@redhat.com>

        LWG 3076 basic_string CTAD ambiguity
        * doc/xml/manual/intro.xml: Document LWG 3076 change.
        * include/bits/basic_string.h
        [__cpp_deduction_guides && !_GLIBCXX_DEFINING_STRING_INSTANTIATIONS]
        (basic_string(const _CharT*, const _Alloc&)): Turn into a function
        template constrained by _RequireAllocator.
        (basic_string(size_type, _CharT, const _Alloc&)): Likewise.
        * src/c++11/string-inst.cc (_GLIBCXX_DEFINING_STRING_INSTANTIATIONS):
        Define.
        * testsuite/21_strings/basic_string/cons/char/deduction.cc: Test
        deduction
        * testsuite/21_strings/basic_string/cons/wchar_t/deduction.cc:
        Likewise.

2018-06-15  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/86169
        * include/bits/basic_string.h [!_GLIBCXX_USE_CXX11_ABI]
        (basic_string::data()): Unshare string.
        * testsuite/21_strings/basic_string/operations/data/char/86169.cc:
        New.

        * include/std/string_view (basic_string_view(const CharT*)): Remove
        check for null pointer and add nonnull attribute.
        (compare(const CharT*), compare(size_type, size_type, const CharT*))
        (find(const CharT*, size_type), rfind(const CharT*, size_type))
        (find_first_of(const CharT*, size_type))
        (find_last_of(const CharT*, size_type))
        (find_first_not_of(const CharT*, size_type))
        (find_last_not_of(const CharT*, size_type)): Add nonnull attribute.
        * testsuite/21_strings/basic_string_view/cons/char/nonnull.cc: New.
        * testsuite/21_strings/basic_string_view/operations/compare/char/
        nonnull.cc: New.
        * testsuite/21_strings/basic_string_view/operations/find/char/
        nonnull.cc: New.
        * testsuite/21_strings/basic_string_view/operations/rfind/char/
        nonnull.cc: New.

        PR libstdc++/86168
        * include/bits/random.h (random_device(const string&)): Remove
        default argument.

        * include/bits/char_traits.h (__cpp_lib_constexpr_char_traits): Only
        define for C++17 and above.

        LWG 2993 reference_wrapper<T> conversion from T&&
        * doc/xml/manual/intro.xml: Document LWG 2993 change.
        * include/bits/refwrap.h (reference_wrapper(_Tp&)): Remove.
        (reference_wrapper(_Tp&&)): Remove.
        (reference_wrapper<_Up>(_Up&&)): Define new constructor as constrained
        template.
        (reference_wrapper): Add deduction guide.
        * testsuite/20_util/reference_wrapper/deduction.cc: New.
        * testsuite/20_util/reference_wrapper/lwg2993.cc: New.

        LWG 3039 Unnecessary decay in thread and packaged_task
        * include/std/future (__constrain_pkgdtask): Replace with ...
        (packaged_task::__not_same): New alias template, using
        __remove_cvref_t instead of decay.
        * include/std/thread (thread::__not_same): Add comment.

2018-06-14  Jonathan Wakely  <jwakely@redhat.com>

        LWG 3075 basic_string needs deduction guides from basic_string_view
        * testsuite/21_strings/basic_string/cons/char/deduction.cc: Test
        deduction from string views.
        * testsuite/21_strings/basic_string/cons/wchar_t/deduction.cc:
        Likewise.

        LWG 3074 make scalar types non-deduced in valarray non-member functions
        * include/bits/valarray_after.h (_DEFINE_EXPR_BINARY_FUNCTION): Change
        scalar parameters to be a non-deduced context.
        * include/std/valarray (_DEFINE_BINARY_OPERATOR): Likewise. Adjust
        whitespace.
        * testsuite/26_numerics/valarray/operators.cc: Test scalar operands.
        * testsuite/26_numerics/valarray/transcend.cc: New.

        * include/std/tuple (__cpp_lib_tuple_element_t, tuple_element_t):
        Move back to <utility>.
        * include/std/utility (__cpp_lib_tuple_element_t. tuple_element_t):
        Restore to here.

        P0935R0 Eradicating unnecessarily explicit default constructors
        * include/backward/strstream (strstreambuf): Add non-explicit default
        constructor.
        * include/bits/locale_conv.h (wbuffer_convert, wstring_convert):
        Likewise.
        * include/bits/regex.h (match_results): Likewise.
        * testsuite/22_locale/conversions/buffer/1.cc: Test for non-explicit
        default constructor.
        * testsuite/22_locale/conversions/string/1.cc: Likewise.
        * testsuite/28_regex/match_results/ctors/char/default.cc: Likewise.
        * testsuite/28_regex/match_results/ctors/wchar_t/default.cc: Likewise.

        * include/std/tuple (__cpp_lib_tuple_element_t): Move feature test
        macro from <utility> and change type to long.
        * include/std/utility (__cpp_lib_tuple_element_t): Remove.
        * testsuite/20_util/tuple/tuple_element_t.cc: Check for feature test
        macro.

        P0935R0 Eradicating unnecessarily explicit default constructors
        * include/bits/random.h (uniform_real_distribution::param_type)
        (normal_distribution::param_type, lognormal_distribution::param_type)
        (gamma_distribution::param_type, chi_squared_distribution::param_type)
        (cauchy_distribution::param_type, fisher_f_distribution::param_type)
        (student_t_distribution::param_type)
        (bernoulli_distribution::param_type)
        (binomial_distribution::param_type)
        (geometric_distribution::param_type)
        (negative_binomial_distribution::param_type)
        (poisson_distribution::param_type)
        (exponential_distribution::param_type)
        (weibull_distribution::param_type)
        (extreme_value_distribution::param_type): Add non-explicit default
        constructors. Remove default argument for first parameter of explicit
        constructors.
        * include/bits/uniform_int_dist.h
        (uniform_int_distribution::param_type): Likewise.
        * include/ext/random
        (beta_distribution::param_type, rice_distribution::param_type)
        (nakagami_distribution::param_type, pareto_distribution::param_type)
        (k_distribution::param_type, arcsine_distribution::param_type)
        (hoyt_distribution::param_type, triangular_distribution::param_type)
        (von_mises_distribution::param_type)
        (hypergeometric_distribution::param_type)
        (logistic_distribution::param_type)
        (uniform_inside_sphere_distribution::param_type): Likewise.
        (uniform_on_sphere_distribution::param_type): Make default constructor
        non-explicit.
        * testsuite/26_numerics/random/bernoulli_distribution/cons/default.cc:
        Test param_type for non-explicit default constructor.
        * testsuite/26_numerics/random/binomial_distribution/cons/default.cc:
        Likewise.
        * testsuite/26_numerics/random/cauchy_distribution/cons/default.cc:
        Likewise.
        * testsuite/26_numerics/random/chi_squared_distribution/cons/default.cc:
        Likewise.
        * testsuite/26_numerics/random/discrete_distribution/cons/default.cc:
        Likewise.
        * testsuite/26_numerics/random/exponential_distribution/cons/default.cc:
        Likewise.
        * testsuite/26_numerics/random/extreme_value_distribution/cons/default.cc:
        Likewise.
        * testsuite/26_numerics/random/fisher_f_distribution/cons/default.cc:
        Likewise.
        * testsuite/26_numerics/random/gamma_distribution/cons/default.cc:
        Likewise.
        * testsuite/26_numerics/random/geometric_distribution/cons/default.cc:
        Likewise.
        * testsuite/26_numerics/random/lognormal_distribution/cons/default.cc:
        Likewise.
        * testsuite/26_numerics/random/negative_binomial_distribution/cons/default.cc:
        Likewise.
        * testsuite/26_numerics/random/normal_distribution/cons/default.cc:
        Likewise.
        * testsuite/26_numerics/random/piecewise_constant_distribution/cons/default.cc:
        Likewise.
        * testsuite/26_numerics/random/piecewise_linear_distribution/cons/default.cc:
        Likewise.
        * testsuite/26_numerics/random/poisson_distribution/cons/default.cc:
        Likewise.
        * testsuite/26_numerics/random/student_t_distribution/cons/default.cc:
        Likewise.
        * testsuite/26_numerics/random/uniform_int_distribution/cons/default.cc:
        Likewise.
        * testsuite/26_numerics/random/uniform_real_distribution/cons/default.cc:
        Likewise.
        * testsuite/26_numerics/random/weibull_distribution/cons/default.cc:
        Likewise.
        * testsuite/ext/random/arcsine_distribution/cons/default.cc: Likewise.
        * testsuite/ext/random/beta_distribution/cons/default.cc: Likewise.
        * testsuite/ext/random/hoyt_distribution/cons/default.cc: Likewise.
        * testsuite/ext/random/hypergeometric_distribution/cons/default.cc:
        Likewise.
        * testsuite/ext/random/k_distribution/cons/default.cc: Likewise.
        * testsuite/ext/random/logistic_distribution/cons/default.cc: Likewise.
        * testsuite/ext/random/nakagami_distribution/cons/default.cc: Likewise.
        * testsuite/ext/random/normal_mv_distribution/cons/default.cc:
        Likewise.
        * testsuite/ext/random/pareto_distribution/cons/default.cc: Likewise.
        * testsuite/ext/random/rice_distribution/cons/default.cc: Likewise.
        * testsuite/ext/random/triangular_distribution/cons/default.cc:
        Likewise.
        * testsuite/ext/random/uniform_inside_sphere_distribution/cons/default.cc:
        Likewise.
        * testsuite/ext/random/uniform_on_sphere_distribution/cons/default.cc:
        Likewise.
        * testsuite/ext/random/von_mises_distribution/cons/default.cc:
        Likewise.

2018-06-14  Daniel Trebbien <dtrebbien@gmail.com>
            Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/83982
        * include/bits/vector.tcc (vector::_M_default_append(size_type)):
        Default-construct new elements before moving existing ones.
        * testsuite/23_containers/vector/capacity/resize/strong_guarantee.cc:
        New.

2018-06-13  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/86127
        * include/bits/forward_list.h (_Fwd_list_base::_Tp_alloc_type): Remove
        unused typedef.
        (_Fwd_list_base::_M_create_node, _Fwd_list_base::_M_erase_after):
        Use node allocator to create and destroy elements.
        (forward_list::_Tp_alloc_type): Remove unused typedef.
        (forward_list::_Alloc_traits): Use allocator_traits instead of
        __gnu_cxx::__alloc_traits.

2018-06-13  François Dumont  <fdumont@gcc.gnu.org>

        * include/debug/helper_functions.h
        (__gnu_debug::_Safe_iterator<>): Add declaration.
        (__can_advance(_Ite, _Size)): New.
        (__can_advance(const _Safe_iterator<>&, _Size)): Overload declaration.
        * include/debug/functions.h
        (__gnu_debug::_Safe_iterator<>): Remove declaration.
        * include/debug/stl_iterator.h
        (__can_advance(const _Safe_iterator<>&)): New definition.
        * include/debug/stl_iterator.h
        (__can_advance(const std::reverse_iterator<>&, _Size)): New.
        (__can_advance(const std::move_iterator<>&, _Size)): New.
        * include/debug/macros.h (__glibcxx_check_can_increment): New.
        * include/debug/debug.h (__glibcxx_requires_can_increment): New.
        * include/bits/stl_algobase.h (fill_n): Use latter.
        * testsuite/25_algorithms/fill_n/2.cc: New.
        * testsuite/25_algorithms/fill_n/debug/1_neg.cc: New.
        * testsuite/25_algorithms/fill_n/debug/2_neg.cc: New.
        * testsuite/25_algorithms/fill_n/debug/3_neg.cc: New.
        * testsuite/25_algorithms/fill_n/debug/4_neg.cc: New.

        * include/debug/debug.h (__glibcxx_requires_can_increment_range): New.
        (__glibcxx_requires_can_decrement_range): New.

2018-06-12  François Dumont  <fdumont@gcc.gnu.org>

        * include/debug/macros.h (__glibcxx_check_can_increment_range): New.
        (__glibcxx_check_can_decrement_range): New.
        * include/bits/stl_algobase.h (std::copy(_II, _II, _OI)): Use
        __glibcxx_requires_can_increment_range.
        (std::move(_II, _II, _OI)): Likewise.
        (std::copy_backward(_BI, _BI, _BI2)): Use
        __glibcxx_requires_can_decrement_range.
        (std::move_backward(_BI, _BI, _BI2)): Likewise.
        * testsuite/25_algorithms/copy_backward/debug/1_neg.cc: New.
        * testsuite/25_algorithms/copy_backward/debug/2_neg.cc: New.
        * testsuite/25_algorithms/copy_backward/debug/3_neg.cc: New.
        * testsuite/25_algorithms/equal/debug/1_neg.cc: New.
        * testsuite/25_algorithms/equal/debug/2_neg.cc: New.
        * testsuite/25_algorithms/equal/debug/3_neg.cc: New.

2018-06-12  Jonathan Wakely  <jwakely@redhat.com>

        P0935R0 Eradicating unnecessarily explicit default constructors
        * include/bits/random.h (linear_congruential_engine)
        (mersenne_twister_engine, subtract_with_carry_engine, random_device)
        (uniform_real_distribution, normal_distribution)
        (lognormal_distribution, gamma_distribution, chi_squared_distribution)
        (cauchy_distribution, fisher_f_distribution, student_t_distribution)
        (bernoulli_distribution, binomial_distribution,geometric_distribution)
        (negative_binomial_distribution, exponential_distribution)
        (weibull_distribution, extreme_value_distribution): Add non-explicit
        default constructors. Remove default argument for first parameter of
        explicit constructors.
        (piecewise_constant_distribution, piecewise_linear_distribution):
        Make default constructor non-explicit.
        * include/bits/uniform_int_dist.h (uniform_int_distribution): Add
        non-explicit default constructors. Remove default argument for first
        parameter of explicit constructor.
        * include/ext/random
        (simd_fast_mersenne_twister_engine, beta_distribution)
        (rice_distribution, nakagami_distribution, pareto_distribution)
        (k_distribution, arcsine_distribution, hoyt_distribution)
        (triangular_distribution, von_mises_distribution)
        (hypergeometric_distribution, logistic_distribution)
        (uniform_inside_sphere_distribution): Likewise.
        (uniform_on_sphere_distribution): Make default constructor
        non-explicit.
        * testsuite/26_numerics/random/bernoulli_distribution/cons/default.cc:
        Test for non-explicit default constructor. Fix references to standard.
        * testsuite/26_numerics/random/binomial_distribution/cons/default.cc:
        Likewise.
        * testsuite/26_numerics/random/cauchy_distribution/cons/default.cc:
        Likewise.
        * testsuite/26_numerics/random/chi_squared_distribution/cons/default.cc:
        Likewise.
        * testsuite/26_numerics/random/discrete_distribution/cons/default.cc:
        Likewise.
        * testsuite/26_numerics/random/exponential_distribution/cons/default.cc:
        Likewise.
        * testsuite/26_numerics/random/extreme_value_distribution/cons/default.cc:
        Likewise.
        * testsuite/26_numerics/random/fisher_f_distribution/cons/default.cc:
        Likewise.
        * testsuite/26_numerics/random/gamma_distribution/cons/default.cc:
        Likewise.
        * testsuite/26_numerics/random/geometric_distribution/cons/default.cc:
        Likewise.
        * testsuite/26_numerics/random/lognormal_distribution/cons/default.cc:
        Likewise.
        * testsuite/26_numerics/random/negative_binomial_distribution/cons/default.cc:
        Likewise.
        * testsuite/26_numerics/random/normal_distribution/cons/default.cc:
        Likewise.
        * testsuite/26_numerics/random/piecewise_constant_distribution/cons/default.cc:
        Likewise.
        * testsuite/26_numerics/random/piecewise_linear_distribution/cons/default.cc:
        Likewise.
        * testsuite/26_numerics/random/poisson_distribution/cons/default.cc:
        Likewise.
        * testsuite/26_numerics/random/student_t_distribution/cons/default.cc:
        Likewise.
        * testsuite/26_numerics/random/uniform_int_distribution/cons/default.cc:
        Likewise.
        * testsuite/26_numerics/random/uniform_real_distribution/cons/default.cc:
        Likewise.
        * testsuite/26_numerics/random/weibull_distribution/cons/default.cc:
        Likewise.
        * testsuite/ext/random/arcsine_distribution/cons/default.cc: Likewise.
        * testsuite/ext/random/beta_distribution/cons/default.cc: Likewise.
        * testsuite/ext/random/hoyt_distribution/cons/default.cc: Likewise.
        * testsuite/ext/random/hypergeometric_distribution/cons/default.cc:
        Likewise.
        * testsuite/ext/random/k_distribution/cons/default.cc: Likewise.
        * testsuite/ext/random/logistic_distribution/cons/default.cc: Likewise.
        * testsuite/ext/random/nakagami_distribution/cons/default.cc: Likewise.
        * testsuite/ext/random/normal_mv_distribution/cons/default.cc:
        Likewise.
        * testsuite/ext/random/pareto_distribution/cons/default.cc: Likewise.
        * testsuite/ext/random/rice_distribution/cons/default.cc: Likewise.
        * testsuite/ext/random/triangular_distribution/cons/default.cc:
        Likewise.
        * testsuite/ext/random/uniform_inside_sphere_distribution/cons/default.cc:
        Likewise.
        * testsuite/ext/random/uniform_on_sphere_distribution/cons/default.cc:
        Likewise.
        * testsuite/ext/random/von_mises_distribution/cons/default.cc:
        Likewise.
        * testsuite/util/testsuite_common_types.h
        (implicitly_default_constructible): New helper.

2018-06-08  Jonathan Wakely  <jwakely@redhat.com>

        * include/bits/ios_base.h (ios::Init::Init(const Init&))
        (ios::Init::operator=): Define as defaulted.
        * include/bits/stl_bvector.h (_Bit_reference(const _Bit_reference&)):
        Likewise.
        * include/bits/stream_iterator.h (istream_iterator::operator=)
        (ostream_iterator::operator=): Likewise.
        * include/bits/streambuf_iterator.h (istreambuf_iterator::operator=)
        Likewise.
        * include/std/bitset (bitset::reference::reference(const reference&)):
        Likewise.
        * include/std/complex (complex<float>::complex(const complex&))
        (complex<double>::complex(const complex&))
        (complex<long double>::complex(const complex&)): Likewise.

2018-06-07  Jonathan Wakely  <jwakely@redhat.com>

        * include/bits/regex.h (sub_match): Add noexcept to default
        constructor and length observer.
        (match_results): Add noexcept to default constructor and observers
        with no preconditions. Define destructor as defaulted.
        (operator==, operator!=, swap): Add noexcept.
        (regex_iterator): Add default member initializers and define default
        constructor and destructor as defaulted. Add noexcept to equality
        and dereference operators.

2018-06-07  François Dumont  <fdumont@gcc.gnu.org>

        * src/c++11/debug.cc
        (_Safe_iterator_base::_M_detach()): Reset state only if needed.
        (_Safe_iterator_base::_M_detach_single()): Likewise.
        (_Safe_local_iterator_base::_M_detach()): Reset state only if needed.
        (_Safe_local_iterator_base::_M_detach_single()): Likewise.

2018-06-06  Jonathan Wakely  <jwakely@redhat.com>

        * include/bits/shared_ptr_base.h (__shared_count): Remove redundant
        move of const value.

2018-06-06  Jakub Jelinek  <jakub@redhat.com>

        PR c++/86068
        * include/bits/c++config: Check __cpp_transactional_memory >= 201500L
        rather than __cpp_transactional_memory >= 201505L.

2018-06-06  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/86008
        * include/bits/quoted_string.h (_Quoted_string<basic_string_view, C>):
        Define new partial specialization.
        * include/std/iomanip (quoted(basic_string_view<C,T>, C, C)): Define
        new overload.
        (operator<<(basic_ostream<C,T>&, const _Quoted_string<S,C>&)): Use
        value not reference for iteration.
        * testsuite/27_io/manipulators/standard/char/quoted.cc: Adjust
        comment.
        * testsuite/27_io/manipulators/standard/char/quoted_sv.cc: New test.
        * testsuite/27_io/manipulators/standard/wchar_t/quoted.cc: Adjust
        comment.

2018-06-05  Jonathan Wakely  <jwakely@redhat.com>

        * include/std/type_traits: Fix comment typos.

        * testsuite/27_io/filesystem/operations/read_symlink.cc: XFAIL for
        mingw* targets.
        * testsuite/27_io/filesystem/operations/symlink_status.cc: Likewise.
        * testsuite/experimental/filesystem/operations/read_symlink.cc:
        Likewise.

2018-06-05  François Dumont  <fdumont@gcc.gnu.org>

        * include/bits/stl_tempbuf.h
        (_Temporary_buffer(_FwdIte, _FwdIte)): Delete, replaced by...
        (_Temporary_buffer(_FwdIte, size_type)): ...this, new.
        * include/ext/memory (temporary_buffer<>(_FwdIte, _FwdIte)): Adapt.
        * include/bits/stl_algo.h (__stable_partition): Adapt.
        (__inplace_merge): Adapt.
        (__stable_sort): Adapt.

2018-06-04  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/85930
        * include/bits/shared_ptr_base.h [!__cpp_rtti]: Include <typeinfo>
        unconditionally. Remove redundant declaration.
        [!__cpp_rtti] (_Sp_make_shared_tag::_S_ti): Fix location of
        alignment-specifier.

        * include/bits/postypes.h (fpos): Define special members as defaulted.

        PR libstdc++/85930
        * include/bits/shared_ptr_base.h (_Sp_make_shared_tag::_S_ti): Align
        the static variable correctly.

2018-05-24  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/78870 support std::filesystem on Windows
        * config.h.in: Regenerate.
        * configure: Regenerate.
        * configure.ac: Check for link, readlink and symlink.
        * include/bits/fs_path.h (path::operator/=(const path&)): Move
        definition out of class body.
        (path::is_absolute(), path::_M_append(path)): Likewise.
        (operator<<(basic_ostream, const path&)): Use std::quoted directly.
        (operator>>(basic_istream, path&)): Likewise.
        (u8path): Reorder definitions and fix Windows implementation.
        (path::is_absolute()): Define inline and fix for Windows.
        [!_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::operator/=(const path&)):
        Define POSIX version inline.
        (path::_M_append(path)): Define inline.
        * include/experimental/bits/fs_path.h (path::is_absolute()): Move
        definition out of class body.
        (operator<<(basic_ostream, const path&)): Fix type of delimiter and
        escape characters.
        (operator>>(basic_istream, path&)): Likewise.
        (path::is_absolute()): Define inline and fix for Windows.
        * src/filesystem/dir-common.h (__gnu_posix): New namespace.
        (__gnu_posix::char_type, __gnu_posix::DIR, __gnu_posix::dirent)
        (__gnu_posix::opendir, __gnu_posix::readdir, __gnu_posix::closedir):
        Define as adaptors for Windows functions/types or as
        using-declarations for POSIX functions/types.
        (_Dir_base, get_file_type): Qualify names to use declarations from
        __gnu_posix namespace.
        (_Dir_base::is_dor_or_dotdot): New helper functions.
        * src/filesystem/dir.cc (_Dir, recursive_directory_iterator): Qualify
        names to use declarations from __gnu_posix namespace.
        * src/filesystem/ops-common.h (__gnu_posix): New nested namespace.
        (__gnu_posix::open, __gnu_posix::close, __gnu_posix::stat_type)
        (__gnu_posix::stat, __gnu_posix::lstat, __gnu_posix::mode_t)
        (__gnu_posix::chmod, __gnu_posix::mkdir, __gnu_posix::getcwd)
        (__gnu_posix::chdir, __gnu_posix::utimbuf, __gnu_posix::utime)
        (__gnu_posix::rename, __gnu_posix::truncate, __gnu_posix::char_type):
        Define as adaptors for Windows functions/types or as
        using-declarations for POSIX functions/types.
        (stat_type, do_copy_file): Qualify names to use declarations from
        __gnu_posix namespace.
        (do_space): Declare new function.
        (make_file_type): Only use S_ISLNK if defined.
        * src/filesystem/ops.cc (char_ptr, filesystem::canonical): Use
        path::value_type not char.
        (filesystem::copy, create_dir, filesystem::create_directory): Qualify
        names to use declarations from __gnu_posix namespace.
        (filesystem::create_hard_link): Check HAVE_LINK autoconf macro and
        add implementation for Windows.
        (filesystem::create_symlink): Check HAVE_SYMLINK autoconf macro.
        (filesystem::current_path(error_code&)): Use __gnu_posix::getcwd.
        [!_PC_PATH_MAX]: Don't use pathconf.
        [PATH_MAX]: Use if defined.
        (filesystem::current_path(const path&, error_code&))
        (filesystem::equivalent, do_stat, filesystem::hard_link_count)
        (filesystem::last_write_time, filesystem::permissions): Use names
        from __gnu_posix.
        (filesystem::read_symlink): Check HAVE_READLINK autoconf macro.
        (filesystem::remove) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Add
        implementation for Windows.
        (filesystem::rename, filesystem::resize_file): Use names from
        __gnu_posix.
        (filesystem::space): Use do_space.
        [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Get absolute path to directory.
        (filesystem::status, filesystem::symlink_status): Use names from
        __gnu_posix.
        (filesystem::temp_directory_path): Add implementation for Windows.
        * src/filesystem/path.cc (dot): Define constant.
        (path::replace_extension): Use dot.
        (path::_M_find_extension): Likewise. Use path::string_type not
        std::string.
        (path::_M_split_cmpts): Use dot.
        (filesystem_error::_M_get_what): Use u8string() not native().
        * src/filesystem/std-dir.cc (_Dir, recursive_directory_iterator):
        Qualify names to use declarations from __gnu_posix namespace.
        * src/filesystem/std-ops.cc (filesystem::absolute(const path&)): Use
        correct error_code.
        (filesystem::absolute(const path&, error_code&)): Add implementation
        for Windows.
        (char_ptr, filesystem::canonical): Use path::value_type not char.
        (do_copy_file): Use names from __gnu_posix.
        [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Do not use fchmod, fchmodat or
        sendfile.
        (filesystem::copy, create_dir, filesystem::create_directory): Qualify
        names to use declarations from __gnu_posix namespace.
        (filesystem::create_hard_link): Check HAVE_LINK autoconf macro and
        add implementation for Windows.
        (filesystem::create_symlink): Check HAVE_SYMLINK autoconf macro.
        (filesystem::current_path(error_code&)): Use __gnu_posix::getcwd.
        [!_PC_PATH_MAX]: Don't use pathconf.
        [PATH_MAX]: Use if defined.
        (filesystem::current_path(const path&, error_code&))
        (filesystem::equivalent, do_stat, filesystem::hard_link_count)
        (filesystem::last_write_time, filesystem::permissions): Use names
        from __gnu_posix.
        (filesystem::read_symlink): Check HAVE_READLINK autoconf macro.
        (filesystem::remove) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Add
        implementation for Windows.
        (filesystem::rename, filesystem::resize_file): Use names from
        __gnu_posix.
        (do_space): Define.
        (filesystem::space): Use do_space.
        (filesystem::status, filesystem::symlink_status): Use names from
        __gnu_posix.
        (filesystem::temp_directory_path): Add implementation for Windows.
        * src/filesystem/std-path.cc
        [_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::operator/=(const path&)):
        Define for Windows.
        (dot): Define constant.
        (path::replace_extension, is_dot): Use dot.
        (path::lexically_normal): Check _M_type instead of calling
        non-existent function.
        (path::_M_find_extension): Use dot. Use path::string_type not
        std::string.
        (path::_M_split_cmpts): Use dot.
        (filesystem_error::_M_get_what): Use u8string() not native().
        * testsuite/27_io/filesystem/iterators/directory_iterator.cc: Do not
        use symlinks.
        * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
        Likewise.
        * testsuite/27_io/filesystem/operations/absolute.cc: Use
        __gnu_test::root_path() instead of "/" and add Windows-specific tests.
        * testsuite/27_io/filesystem/operations/canonical.cc: Use
        path::string() to get narrow string, not path::native().
        * testsuite/27_io/filesystem/operations/copy.cc: Construct fstreams
        with std::filesystem::path not std::basic_string.
        * testsuite/27_io/filesystem/operations/copy_file.cc: Likewise.
        * testsuite/27_io/filesystem/operations/exists.cc: Use
        __gnu_test::root_path() instead of "/".
        * testsuite/27_io/filesystem/operations/is_empty.cc: Construct
        fstreams with std::filesystem::path not std::basic_string.
        * testsuite/27_io/filesystem/operations/last_write_time.cc: Use
        path::string() to get narrow string.
        * testsuite/27_io/filesystem/operations/space.cc: Check results for
        errors, expect sensible values otherwise.
        * testsuite/27_io/filesystem/operations/temp_directory_path.cc: Add
        helpers for adjusting the environment on Windows.
        * testsuite/27_io/filesystem/path/append/path.cc: Test
        Windows-specific behaviour.
        * testsuite/27_io/filesystem/path/construct/format.cc: Fix creation
        of path::string_type objects.
        * testsuite/27_io/filesystem/path/construct/locale.cc: Compare native
        string to wide string on Windows.
        * testsuite/27_io/filesystem/path/decompose/root_directory.cc: Allow
        for backslash as root-directory.
        * testsuite/27_io/filesystem/path/decompose/stem.cc: Use
        path::string() to get narrow string.
        * testsuite/27_io/filesystem/path/itr/traversal.cc: Test Windows-style
        paths.
        * testsuite/27_io/filesystem/path/native/string.cc: Use string_type
        not std::string.
        * testsuite/27_io/filesystem/path/query/is_absolute.cc: Adjust for
        different definintion of absolute paths on Windows.
        * testsuite/experimental/filesystem/iterators/directory_iterator.cc:
        Do not use symlinks.
        * testsuite/experimental/filesystem/operations/absolute.cc: Test
        Windows behaviour.
        * testsuite/experimental/filesystem/operations/copy.cc: Construct
        fstreams with NTCTS not std::basic_string.
        * testsuite/experimental/filesystem/operations/copy_file.cc: Likewise.
        * testsuite/experimental/filesystem/operations/exists.cc: Use
        __gnu_test::root_path() instead of "/".
        * testsuite/experimental/filesystem/operations/is_empty.cc: Construct
        fstreams with NTCTS not std::basic_string.
        * testsuite/experimental/filesystem/operations/last_write_time.cc:
        Use path::string() to get narrow string.
        * testsuite/experimental/filesystem/operations/space.cc: Use
        __gnu_test::root_path() instead of "/".
        * testsuite/experimental/filesystem/operations/temp_directory_path.cc:
        Add helpers for adjusting the environment on Windows.
        * testsuite/experimental/filesystem/path/append/path.cc: Use
        path::string() to get narrow strings for comparisons.
        * testsuite/experimental/filesystem/path/concat/path.cc: Likewise.
        * testsuite/experimental/filesystem/path/decompose/root_directory.cc:
        Likewise.
        * testsuite/experimental/filesystem/path/decompose/stem.cc: Likewise.
        * testsuite/experimental/filesystem/path/native/string.cc: Use
        string_type not std::string.
        * testsuite/experimental/filesystem/path/query/is_absolute.cc:
        Adjust for different definintion of absolute paths on Windows.
        * testsuite/util/testsuite_fs.h (__gnu_test::root_path()): New
        function.
        (__gnu_test::scoped_file): Construct fstreams with NTCTS not
        std::basic_string.

2018-05-31  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/85951
        * include/std/type_traits [_GLIBCXX_USE_C99_STDINT_TR1]: Do not define
        uint_least16_t and uint_least32_t.
        (__make_unsigned<wchar_t>): Define unconditionally.
        (__make_unsigned_selector<_Tp, true, false>): Remove intermediate
        typedefs.
        (__make_unsigned_selector_base): New type to provide helper templates.
        (__make_unsigned_selector<_Tp, false, true>): Reimplement using
        __make_unsigned_selector_base helpers.
        (__make_unsigned<char16_t>, __make_unsigned<char32_t>): Define.
        (__make_signed_selector<_Tp, true, false>): Remove intermediate
        typedefs.
        (__make_signed<wchar_t>, __make_signed<char16_t>)
        (__make_signed<char32_t>)): Define unconditionally.
        * testsuite/20_util/make_signed/requirements/typedefs-3.cc: Check
        wchar_t, char16_t and char32_t are transformed correctly.
        * testsuite/20_util/make_signed/requirements/typedefs_neg.cc: Adjust
        dg-error lineno.
        * testsuite/20_util/make_unsigned/requirements/typedefs-3.cc: Check
        wchar_t, char16_t and char32_t are transformed correctly.
        * testsuite/20_util/make_unsigned/requirements/typedefs_neg.cc: Adjust
        dg-error lineno.

2018-05-29  Jonathan Wakely  <jwakely@redhat.com>

        * include/std/variant (__erased_dtor): Qualify call to __get.

2018-05-27  François Dumont  <fdumont@gcc.gnu.org>

        * include/bits/stl_tree.h (_Rb_tree_impl(_Node_allocator&&)): New.
        (_Rb_tree(const allocator_type&)): Use latter.
        * include/bits/stl_map.h (map(const allocator_type&)): Likewise.
        (map(initializer_list<value_type>, const allocator_type&)): Likewise.
        (map(_InputIterator, _InputIterator, const allocator_type&)): Likewise.
        * include/bits/stl_multimap.h
        (multimap(const allocator_type&)): Likewise.
        (multimap(initializer_list<value_type>, const allocator_type&)):
        Likewise.
        (multimap(_InputIterator, _InputIterator, const allocator_type&)):
        Likewise.
        * include/bits/stl_set.h (set(const allocator_type&)): Likewise.
        (set(initializer_list<value_type>, const allocator_type&)): Likewise.
        (set(_InputIterator, _InputIterator, const allocator_type&)): Likewise.
        * include/bits/stl_multiset.h
        (multiset(const allocator_type&)): Likewise.
        (multiset(initializer_list<value_type>, const allocator_type&)):
        Likewise.
        (multiset(_InputIterator, _InputIterator, const allocator_type&)):
        Likewise.

2018-05-25  François Dumont  <fdumont@gcc.gnu.org>

        PR libstdc++/85768
        * src/c++11/debug.cc: Remove backtrace usage.

2018-05-24  Maya Rashish  <coypu@sdf.org>

        PR target/85904
        * crossconfig.m4: Test for aligned_alloc on netbsd.
        * configure: Regenerate.

2018-05-24  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/69769
        PR libstdc++/85886
        * include/bits/atomic_base.h (__atomic_base::value_type)
        (__atomic_base::difference_type): Add new typedefs.
        * include/std/atomic (atomic<bool>::value_type, atomic<T>::value_type)
        (atomic<T*>::value_type, atomic<T*>::difference_type): Likewise.
        (atomic<T*>::operator++, atomic<T*>::operator--)
        (atomic<T*>::operator+=, atomic<T*>::operator-=)
        (atomic<T*>::fetch_add, atomic<T*>::fetch_sub): Add static assertion
        to enforce C++17 requirement on pointer arithmetic.
        (__atomic_val_t, __atomic_diff_t): New alias templates.
        (atomic_init, atomic_store_explicit, atomic_exchange_explicit)
        (atomic_compare_exchange_weak_explicit)
        (atomic_compare_exchange_strong_explicit, atomic_store)
        (atomic_exchange, atomic_compare_exchange_weak)
        (atomic_compare_exchange_strong): Use __atomic_val_t to make
        scalar parameters be non-deduced contexts.
        (atomic_fetch_add_explicit, atomic_fetch_sub_explicit)
        (atomic_fetch_add, atomic_fetch_sub): Change first parameter to be
        atomic instead of __atomic_base, and use __atomic_diff_t for scalar
        parameters.
        (atomic_fetch_and_explicit, atomic_fetch_or_explicit)
        (atomic_fetch_xor_explicit, atomic_fetch_and, atomic_fetch_or)
        (atomic_fetch_xor): Use __atomic_val_t for scalar parameters.
        (atomic_fetch_add_explicit, atomic_fetch_sub_explicit)
        (atomic_fetch_add, atomic_fetch_sub): Remove overloads for atomic
        address types.
        * testsuite/29_atomics/atomic/60695.cc: Adjust dg-error lineno.
        * testsuite/29_atomics/atomic/69769.cc: New test.
        * testsuite/29_atomics/atomic/nonmembers.cc: New test.
        * testsuite/29_atomics/atomic/operators/pointer_partial_void.cc:
        Disable test for C++17 and later.
        * testsuite/29_atomics/atomic/requirements/typedefs.cc: New test.
        * testsuite/29_atomics/atomic_integral/nonmembers.cc: New test.
        * testsuite/29_atomics/atomic_integral/requirements/typedefs.cc: New
        test.

2018-05-23  Jonathan Wakely  <jwakely@redhat.com>

        * include/bits/fs_path.h (path::__is_encoded_char): Change from class
        template to alias template.
        (path::__value_type_is_char): Use remove_const_t.
        (path:_S_string_from_iter): New helper function.
        (path::_S_convert(InputIter, __null_terminated))
        (path::_S_convert_loc(InputIter, __null_terminated, const locale&)):
        Use _S_string_from_iter.
        (path::string<_CharT, _Allocator>(const _Allocator&)): Allow sharing
        rep for COW strings.
        * include/experimental/bits/fs_path.h (path::__is_encoded_char):
        Change from class template to alias template.
        (path::__value_type_is_char): Use remove_const.
        (path:_S_string_from_iter): New helper function.
        (path::_S_convert(InputIter, __null_terminated))
        (path::_S_convert_loc(InputIter, __null_terminated, const locale&)):
        Use _S_string_from_iter.
        * testsuite/27_io/filesystem/path/append/source.cc: Test appending
        wide strings.
        * testsuite/27_io/filesystem/path/concat/strings.cc: Check for exact
        string equality, not path equivalence.
        * testsuite/27_io/filesystem/path/construct/format.cc: Check
        construction from std::string and std::wstring and input iterators.
        * testsuite/27_io/filesystem/path/construct/locale.cc: Check
        construction from iterators.
        * testsuite/experimental/filesystem/path/concat/strings.cc: Check for
        exact string equality, not path equivalence.
        * testsuite/experimental/filesystem/path/construct/locale.cc: Check
        construction from iterators.

        * include/bits/fs_path.h (path::_M_type): Change default member
        initializer to _Filename.
        (path::begin): Create past-the-end iterator for empty path.
        * src/filesystem/std-path.cc (path::remove_filename()): Remove
        debugging check.
        (path::has_relative_path()): Return false for empty filenames.
        (path::_M_split_cmpts): Set _M_type to _Filename for empty paths.
        Fix offset of empty final component.
        * testsuite/27_io/filesystem/path/itr/components.cc: New.
        * testsuite/27_io/filesystem/path/itr/traversal.cc: Add new inputs.

2018-05-21  Jonathan Wakely  <jwakely@redhat.com>

        Add support for opening file streams from wide character strings.
        * config/io/basic_file_stdio.cc [_GLIBCXX_HAVE__WFOPEN]
        (__basic_file<char>::open(const wchar_t*, ios_base::openmode)):
        Define new overload.
        * config/io/basic_file_stdio.h [_GLIBCXX_HAVE__WFOPEN]
        (__basic_file<char>::open(const wchar_t*, ios_base::openmode)):
        Declare new overload.
        * configure.ac: Check for _wfopen.
        * crossconfig.m4: Likewise.
        * configure: Regenerate.
        * config.h.in: Regenerate.
        * include/bits/fstream.tcc [_GLIBCXX_HAVE__WFOPEN]
        (basic_filebuf<C,T>::open(const wchar_t*, ios_base::openmode)):
        Define new overload.
        * include/std/fstream [_GLIBCXX_HAVE__WFOPEN]
        (basic_filebuf<C,T>::open(const wchar_t*, ios_base::openmode)):
        Declare new overload.
        [_GLIBCXX_HAVE__WFOPEN]
        (basic_ifstream<C,T>::basic_ifstream(const wchar_t*, openmode))
        (basic_ifstream<C,T>::basic_open(const wchar_t*, openmode))
        (basic_ofstream<C,T>::basic_ifstream(const wchar_t*, openmode))
        (basic_ofstream<C,T>::basic_open(const wchar_t*, openmode))
        (basic_fstream<C,T>::basic_ifstream(const wchar_t*, openmode))
        (basic_fstream<C,T>::basic_open(const wchar_t*, openmode)): Define
        new overloads.
        * testsuite/27_io/basic_filebuf/open/wchar_t/1.cc: New.
        * testsuite/27_io/basic_ifstream/cons/wchar_t/1.cc: New.
        * testsuite/27_io/basic_ifstream/open/wchar_t/1.cc: New.
        * testsuite/27_io/basic_ofstream/cons/wchar_t/1.cc: New.
        * testsuite/27_io/basic_ofstream/open/wchar_t/1.cc: New.
        * testsuite/27_io/basic_fstream/cons/wchar_t/1.cc: New.
        * testsuite/27_io/basic_fstream/open/wchar_t/1.cc: New.

2018-05-21  François Dumont  <fdumont@gcc.gnu.org>

        PR libstdc++/85845
        * include/bits/stl_tree.h
        (_Rb_tree_impl(_Rb_tree_impl&&, _Node_allocator&&)): Fix noexcept
        qualification.

2018-05-21  Jonathan Wakely  <jwakely@redhat.com>

        * src/filesystem/std-ops.cc (absolute): Report an error for empty
        paths.
        (weakly_canonical(const path&)): Do not call canonical on empty path.
        (weakly_canonical(const path&, error_code&)): Likewise.
        * testsuite/27_io/filesystem/operations/absolute.cc: Check for errors.

        PR libstdc++/85818
        * testsuite/experimental/filesystem/path/preferred_separator.cc: Add
        dg-require-filesystem-ts.

        PR libstdc++/85843
        * src/c++11/cow-stdexcept.cc (logic_error, runtime_error): Explicitly
        initialize base class to avoid warnings.

2018-05-19  Jonathan Wakely  <jwakely@redhat.com>

        * src/c++11/codecvt.cc (__codecvt_utf8_base<wchar_t>::do_in)
        [__SIZEOF_WCHAR_T__==2 && __BYTE_ORDER__!=__ORDER_BIG_ENDIAN__]: Set
        little_endian element in bitmask.
        * testsuite/22_locale/codecvt/codecvt_utf8/69703.cc: Run all tests.
        * testsuite/22_locale/codecvt/codecvt_utf8/wchar_t/1.cc: New.

2018-05-18  François Dumont  <fdumont@gcc.gnu.org>

        * include/bits/stl_tree.h
        (_Rb_tree_impl(_Rb_tree_impl&&, _Node_allocator&&)): New.
        (_Rb_tree(_Rb_tree&&, _Node_allocator&&, true_type)): New, use latter.
        (_Rb_tree(_Rb_tree&&, _Node_allocator&&, false_type)): New.
        (_Rb_tree(_Rb_tree&&, _Node_allocator&&)): Adapt, use latters.
        * include/debug/map.h
        (map(map&&, const_allocator_type&)): Add noexcept qualitication.
        * include/debug/multimap.h
        (multimap(multimap&&, const_allocator_type&)): Likewise.
        * include/debug/set.h
        (set(set&&, const_allocator_type&)): Likewise.
        * include/debug/multiset.h
        (multiset(multiset&&, const_allocator_type&)): Likewise.
        * testsuite/23_containers/map/cons/noexcept_default_construct.cc:
        Add checks.
        * testsuite/23_containers/map/cons/noexcept_move_construct.cc:
        Add checks.
        * testsuite/23_containers/multimap/cons/noexcept_default_construct.cc:
        Add checks.
        * testsuite/23_containers/multimap/cons/noexcept_move_construct.cc:
        Add checks.
        * testsuite/23_containers/multiset/cons/noexcept_default_construct.cc:
        Add checks.
        * testsuite/23_containers/multiset/cons/noexcept_move_construct.cc:
        Add checks.
        * testsuite/23_containers/set/cons/noexcept_default_construct.cc:
        Add checks.
        * testsuite/23_containers/set/cons/noexcept_move_construct.cc:
        Add checks.

2018-05-18  Jason Merrill  <jason@redhat.com>

        * include/bits/stl_deque.h (_Deque_iterator): Constrain constructor
        for conversion to const_iterator.  Add defaulted copy ops.
        * libsupc++/new (bad_alloc): Add defaulted copy ops.
        * libsupc++/exception.h (exception): Add defaulted copy ops.
        * include/std/system_error (system_error): Add defaulted copy ops.
        * include/std/stdexcept (domain_error, invalid_argument)
        (length_error, out_of_range, range_error, overflow_error)
        (underflow_error): Add defaulted copy ops.
        * include/bits/stl_iterator.h (reverse_iterator): Add defaulted
        copy assignment.
        * include/bits/allocator.h (allocator): Add defaulted copy assignment.
        * include/ext/throw_allocator.h (condition_base): Add defaulted
        default and copy ctor and copy assignment.

2018-05-18  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/85098
        * include/bits/regex.h [__cplusplus < 201703L] (basic_regex::icase)
        (basic_regex::nosubs, basic_regex::optimize, basic_regex::collate)
        (basic_regex::ECMAScript, basic_regex::basic, basic_regex::extended)
        (basic_regex::awk, basic_regex::grep, basic_regex::egrep): Add
        definitions.
        * include/bits/regex_automaton.h (_NFA::_M_insert_state): Adjust
        whitespace.
        * include/bits/regex_compiler.tcc (__INSERT_REGEX_MATCHER): Add
        braces around body of do-while.
        * testsuite/28_regex/basic_regex/85098.cc: New

2018-05-17  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/85818
        * src/filesystem/path.cc (path::preferred_separator): Add used
        attribute.
        * testsuite/experimental/filesystem/path/preferred_separator.cc: New.

        PR libstdc++/85812
        * libsupc++/cxxabi_init_exception.h (__cxa_free_exception): Declare.
        * libsupc++/exception_ptr.h (make_exception_ptr) [__cpp_exceptions]:
        Refactor to separate non-throwing and throwing implementations.
        [__cpp_rtti && !_GLIBCXX_HAVE_CDTOR_CALLABI]: Deallocate the memory
        if constructing the object throws.

2018-05-15  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/85749
        * include/bits/random.h (__detail::__is_seed_seq): New SFINAE helper.
        (linear_congruential_engine, mersenne_twister_engine)
        (subtract_with_carry_engine, discard_block_engine)
        (independent_bits_engine, shuffle_order_engine): Use __is_seed_seq to
        constrain function templates taking seed sequences.
        * include/bits/random.tcc (linear_congruential_engine::seed(_Sseq&))
        (mersenne_twister_engine::seed(_Sseq&))
        (subtract_with_carry_engine::seed(_Sseq&)): Change return types to
        match declarations.
        * include/ext/random (simd_fast_mersenne_twister_engine): Use
        __is_seed_seq to constrain function templates taking seed sequences.
        * include/ext/random.tcc (simd_fast_mersenne_twister_engine::seed):
        Change return type to match declaration.
        * testsuite/26_numerics/random/discard_block_engine/cons/seed_seq2.cc:
        New.
        * testsuite/26_numerics/random/independent_bits_engine/cons/
        seed_seq2.cc: New.
        * testsuite/26_numerics/random/linear_congruential_engine/cons/
        seed_seq2.cc: New.
        * testsuite/26_numerics/random/mersenne_twister_engine/cons/
        seed_seq2.cc: New.
        * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error lineno.
        * testsuite/26_numerics/random/shuffle_order_engine/cons/seed_seq2.cc:
        New.
        * testsuite/26_numerics/random/subtract_with_carry_engine/cons/
        seed_seq2.cc: New.
        * testsuite/ext/random/simd_fast_mersenne_twister_engine/cons/
        seed_seq2.cc: New.

        PR libstdc++/83891
        * include/bits/fs_path.h (path::is_absolute()): Use same definition
        for all operating systems.
        * include/experimental/bits/fs_path.h (path::is_absolute()): Likewise.
        * testsuite/27_io/filesystem/path/query/is_absolute.cc: New.
        * testsuite/27_io/filesystem/path/query/is_relative.cc: Fix comment.
        * testsuite/experimental/filesystem/path/query/is_absolute.cc: New.

        * testsuite/27_io/filesystem/path/decompose/extension.cc: Remove
        unused <vector> header.
        * testsuite/27_io/filesystem/path/query/empty.cc: Likewise.
        * testsuite/27_io/filesystem/path/query/has_extension.cc: Likewise.
        * testsuite/27_io/filesystem/path/query/has_filename.cc: Likewise.
        * testsuite/27_io/filesystem/path/query/has_parent_path.cc: Likewise.
        * testsuite/27_io/filesystem/path/query/has_relative_path.cc:
        Likewise.
        * testsuite/27_io/filesystem/path/query/has_root_directory.cc:
        Likewise.
        * testsuite/27_io/filesystem/path/query/has_root_name.cc: Likewise.
        * testsuite/27_io/filesystem/path/query/has_root_path.cc: Likewise.
        * testsuite/27_io/filesystem/path/query/has_stem.cc: Likewise.
        * testsuite/27_io/filesystem/path/query/is_relative.cc: Likewise.
        * testsuite/experimental/filesystem/path/decompose/extension.cc:
        Likewise.
        * testsuite/experimental/filesystem/path/query/empty.cc: Likewise.
        * testsuite/experimental/filesystem/path/query/has_extension.cc:
        Likewise.
        * testsuite/experimental/filesystem/path/query/has_filename.cc:
        Likewise.
        * testsuite/experimental/filesystem/path/query/has_parent_path.cc:
        Likewise.
        * testsuite/experimental/filesystem/path/query/has_relative_path.cc:
        Likewise.
        * testsuite/experimental/filesystem/path/query/has_root_directory.cc:
        Likewise.
        * testsuite/experimental/filesystem/path/query/has_root_name.cc:
        Likewise.
        * testsuite/experimental/filesystem/path/query/has_root_path.cc:
        Likewise.
        * testsuite/experimental/filesystem/path/query/has_stem.cc: Likewise.
        * testsuite/experimental/filesystem/path/query/is_relative.cc:
        Likewise.

        PR libstdc++/84159
        * include/bits/fs_path.h (path::operator/=, path::append): Construct
        temporary path before calling _M_append.
        (path::_M_append): Change parameter to path and implement C++17
        semantics.
        * testsuite/27_io/filesystem/path/append/path.cc: Add helper function
        and more examples from the standard.
        * testsuite/27_io/filesystem/path/append/source.cc: New.
        * testsuite/27_io/filesystem/path/decompose/filename.cc: Add comment.
        * testsuite/27_io/filesystem/path/nonmember/append.cc: New.

        * include/std/variant (__gen_vtable_impl::__visit_invoke): Qualify
        __invoke to prevent ADL.

2018-05-14  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/81256
        * include/bits/fstream.tcc (basic_filebuf::close): Do not swallow
        exceptions from _M_terminate_output().
        * include/std/fstream (basic_filebuf::~basic_filebuf): Swallow any
        exceptions from close().
        * testsuite/27_io/basic_filebuf/close/81256.cc: New.

        * include/bits/valarray_array.h (__valarray_get_memory): Remove.
        (__valarray_get_storage): Call operator new directly. Remove ignored
        top-level restrict qualifier and add malloc attribute instead.
        (_Array<_Tp>::_Array(size_t)): Remove unused constructor.

        PR libstdc++/67554
        * include/bits/valarray_array.h (_Array_copy_ctor<_Tp, true>)
        (_Array_copier<_Tp, true>): Do not pass null pointers to memcpy.

        PR libstdc++/82966
        * include/bits/node_handle.h (_Node_handle_common::_M_swap): Use value
        instead of type.
        * testsuite/23_containers/set/modifiers/node_swap.cc: New.

2018-05-13  Ville Voutilainen  <ville.voutilainen@gmail.com>

        PR libstdc++/80165
        * testsuite/20_util/variant/80165.cc: New.

2018-05-10  Jonathan Wakely  <jwakely@redhat.com>

        * doc/xml/faq.xml: Link to C++17 status. Add note to outdated answer.
        * doc/xml/manual/debug_mode.xml: Add array and forward_list to list
        of C++11 containers with Debug Mode support.
        * doc/xml/manual/using.xml: Document Dual ABI for ios_base::failure.
        * doc/html/*: Regenerate.

2018-05-10  Jason Merrill  <jason@redhat.com>

        * include/bits/regex_compiler.h (_S_cache_size): Change from
        function to variable.

2018-05-10  Edward Smith-Rowland  <3dw4rd@verizon.net>

        PR libstdc++/83140 - assoc_legendre returns negated value when m is odd
        * include/tr1/legendre_function.tcc (__assoc_legendre_p): Add __phase
        argument defaulted to +1.  Doxy comments on same.
        * testsuite/special_functions/02_assoc_legendre/
        check_value.cc: Regen.
        * testsuite/tr1/5_numerical_facilities/special_functions/
        02_assoc_legendre/check_value.cc: Regen.

2018-05-10  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/85729
        * include/bits/c++config.h (__replacement_assert): Add linkage
        specification.
        * include/bits/std_abs.h: Add comment to closing brace of block.
        * include/c_global/cstddef: Add linkage specification.
        * include/c_global/cstring: Likewise.
        * include/c_global/cwchar: Likewise.

2018-05-09  François Dumont  <fdumont@gcc.gnu.org>

        * include/debug/safe_iterator.h (_Safe_iterator<>::_M_constant()):
        Rename in...
        (_Safe_iterator<>::_S_constant()): ...that.
        * include/debug/safe_local_iterator.h
        (_Safe_local_iterator<>::_M_constant()): Rename in...
        (_Safe_local_iterator<>::_S_constant()): ...that.
        * include/debug/formatter.h: Remove bits/cpp_type_traits.h include.
        (_Iterator_state::__rbegin): New.
        (_Iterator_state::__rmiddle): New.
        (_Iterator_state::__rend): New.
        (_Parameter::_Parameter(const _Safe_iterator<>&, const char*,
        _Is_iterator)): Use _Safe_iterator<>::_S_constant. Grab normal underlying
        iterator type.
        (_Parameter::_Parameter(const _Safe_local_iterator<>&, const char*,
        _Is_iterator)): Likewise.
        (_Parameter::_S_reverse_state(_Iterator_state)): New.
        (_Parameter(__gnu_cxx::__normal_iterator<> const&, const char*,
        _Is_iterator)): New.
        (_Parameter(std::reverse_iterator<> const&, const char*,
        _Is_iterator)): New.
        (_Parameter(std::reverse_iterator<_Safe_iterator<>> const&,
        const char*, _Is_iterator)): New.
        (_Parameter(std::move_iterator<> const&, const char*, _Is_iterator):
        New.
        (_Parameter(std::move_iterator<_Safe_iterator<>> const&, const char*,
        _Is_iterator)): New.
        * testsuite/24_iterators/move_iterator/debug_neg.cc: New.
        * testsuite/24_iterators/normal_iterator/debug_neg.cc: New.
        * testsuite/24_iterators/reverse_iterator/debug_neg.cc: New.

2018-05-09  Jonathan Wakely  <jwakely@redhat.com>

        * include/bits/std_function.h (_Base_manager::_M_get_pointer):
        Use constexpr if in C++17 mode.
        (_Base_manager::_M_clone(_Any_data&, const _Any_data&, true_type)):
        Copy from const object.
        * testsuite/20_util/function/cons/non_copyconstructible.cc: New.

2018-05-08  François Dumont  <fdumont@gcc.gnu.org>

        * src/c++11/debug.cc [_GLIBCXX_HAVE_EXECINFO_H]: Include execinfo.h.
        [_GLIBCXX_HAVE_EXECINFO_H](_Error_formatter::_M_error): Render
        backtrace.

        * include/debug/macros.h (__glibcxx_check_valid_range_at): New.
        * include/debug/functions.h (__check_valid_range): Use latter.
        * include/debug/macros.h (__glibcxx_check_valid_constructor_range): New,
        use latter.
        * include/debug/deque
        (deque::deque<_Iter>(_Iter, _Iter, const _Alloc&)): Use latter.
        * include/debug/forward_list
        (forward_list::forward_list<_Iter>(_Iter, _Iter, const _Alloc&)):
        Likewise.
        * include/debug/list
        (list::list<_Iter>(_Iter, _Iter, const _Alloc&)): Likewise.
        * include/debug/list
        (list::list<_Iter>(_Iter, _Iter, const _Alloc&)): Likewise.
        * include/debug/map.h
        (map::map<_Iter>(_Iter, _Iter, const _Alloc&)): Likewise.
        (map::map<_Iter>(_Iter, _Iter, const _Compare&, const _Alloc&)):
        Likewise.
        * include/debug/multimap.h
        (multimap::multimap<_Iter>(_Iter, _Iter, const _Alloc&)): Likewise.
        (multimap::multimap<_Iter>(_Iter, _Iter, const _Compare&,
        const _Alloc&)): Likewise.
        * include/debug/set.h
        (set::set<_Iter>(_Iter, _Iter, const _Alloc&)): Likewise.
        (set::set<_Iter>(_Iter, _Iter, const _Compare&, const _Alloc&)):
        Likewise.
        * include/debug/multiset.h
        (multiset::multiset<_Iter>(_Iter, _Iter, const _Alloc&)): Likewise.
        (multiset::multiset<_Iter>(_Iter, _Iter, const _Compare&,
        const _Alloc&)): Likewise.
        * include/debug/string
        (basic_string::basic_string<_Iter>(_Iter, _Iter, const _Alloc&)):
        Likewise.
        * include/debug/unordered_map
        (unordered_map::unordered_map<_Iter>(_Iter, _Iter, const _Alloc&)):
        Likewise.
        (unordered_multimap::unordered_multimap<_Iter>(_Iter, _Iter,
        const _Alloc&)): Likewise.
        * include/debug/unordered_set
        (unordered_set::unordered_set<_Iter>(_Iter, _Iter, const _Alloc&)):
        Likewise.
        (unordered_multiset::unordered_multiset<_Iter>(_Iter, _Iter,
        const _Alloc&)): Likewise.
        * include/debug/vector
        (vector::vector<_Iter>(_Iter, _Iter, const _Alloc&)): Use latter.

        * include/debug/formatter.h (_Error_formatter::_M_function): New.
        (_Error_formatter(const char*, unsigned int)): Adapt.
        (_Error_formatter::_M_at): Rename in...
        (_Error_formatter::_S_at): ...that and adapt.
        * include/debug/macros.h (_GLIBCXX_DEBUG_VERIFY_AT_F): New.
        (_GLIBCXX_DEBUG_VERIFY_AT, _GLIBCXX_DEBUG_VERIFY): Adapt.
        * src/c++11/debug.cc (_Error_formatter::_M_error): Render _M_function
        when available.

2018-05-08  Jonathan Wakely  <jwakely@redhat.com>

        * include/bits/regex_automaton.h (_NFA_base::_M_paren_stack, _NFA):
        Use normal std::vector even in Debug Mode.

        PR libstdc++/85672
        * include/Makefile.am [!ENABLE_FLOAT128]: Change c++config.h entry
        to #undef _GLIBCXX_USE_FLOAT128 instead of defining it to zero.
        * include/Makefile.in: Regenerate.
        * include/bits/c++config (_GLIBCXX_USE_FLOAT128): Move definition
        within conditional block.

2018-05-07  Jonathan Wakely  <jwakely@redhat.com>

        * doc/xml/manual/using.xml (table.cmd_options): Document that the
        C++17 Filesystem implementation also needs -lstdc++fs.

        PR libstdc++/85671
        * include/bits/fs_path.h (operator/): Permit copy elision.
        * include/experimental/bits/fs_path.h (operator/): Likewise.

2018-05-07  Edward Smith-Rowland  <3dw4rd@verizon.net>

        Moar PR libstdc++/80506
        * include/bits/random.tcc (gamma_distribution::__generate_impl()):
        Fix magic number used in loop condition.

2018-05-04  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/85642 fix is_nothrow_default_constructible<optional<T>>
        * include/std/optional (_Optional_payload): Add noexcept to default
        constructor. Re-indent.
        (_Optional_payload<_Tp, true, true, true>): Likewise. Add noexcept to
        constructor for copying disengaged payloads.
        (_Optional_payload<_Tp, true, false, true>): Likewise.
        (_Optional_payload<_Tp, true, true, false>): Likewise.
        (_Optional_payload<_Tp, true, false, false>): Likewise.
        * testsuite/20_util/optional/cons/85642.cc: New.
        * testsuite/20_util/optional/cons/value_neg.cc: Adjust dg-error lines.

2018-05-03  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/82644
        * include/tr1/cmath [__STRICT_ANSI__] (hypergf, hypergl, hyperg): Use
        inline definitions instead of using-declarations.
        [__STRICT_ANSI__] (conf_hypergf, conf_hypergl, conf_hyperg): Likewise.
        * testsuite/tr1/5_numerical_facilities/special_functions/
        07_conf_hyperg/compile_cxx17.cc: New.
        * testsuite/tr1/5_numerical_facilities/special_functions/
        17_hyperg/compile_cxx17.cc: New.

        PR libstdc++/84769
        * include/std/variant (visit): Qualify std::get call.

        PR libstdc++/85632 use uintmax_t for arithmetic
        * src/filesystem/ops.cc (experimental::filesystem::space): Perform
        arithmetic in result type.
        * src/filesystem/std-ops.cc (filesystem::space): Likewise.
        * testsuite/27_io/filesystem/operations/space.cc: Check total capacity
        is greater than free space.
        * testsuite/experimental/filesystem/operations/space.cc: New.

        * testsuite/20_util/remove_cvref/requirements/alias_decl.cc: New.
        * testsuite/20_util/remove_cvref/requirements/explicit_instantiation.cc:
        New.
        * testsuite/20_util/remove_cvref/value.cc: New.
        * testsuite/20_util/remove_cvref/value_ext.cc: New.

        PR libstdc++/84087 LWG DR 2268 basic_string default arguments
        * include/bits/basic_string.h [_GLIBCXX_USE_CXX11_ABI=1]
        (append(const basic_string&, size_type, size_type)
        (assign(const basic_string&, size_type, size_type)
        (insert(size_type, const basic_string&, size_type, size_type)
        (replace(size_type,size_type,const basic_string&,size_type,size_type)
        (compare(size_type,size_type,constbasic_string&,size_type,size_type)):
        Add default arguments (LWG 2268).
        [_GLIBCXX_USE_CXX11_ABI=0]
        (append(const basic_string&, size_type, size_type)
        (assign(const basic_string&, size_type, size_type)
        (insert(size_type, const basic_string&, size_type, size_type)
        (replace(size_type,size_type,const basic_string&,size_type,size_type)
        (compare(size_type,size_type,constbasic_string&,size_type,size_type)):
        Likewise.
        * testsuite/21_strings/basic_string/dr2268.cc: New test.

        PR libstdc++/84535
        * include/std/thread (thread::__not_same): New SFINAE helper.
        (thread::thread(_Callable&&, _Args&&...)): Add SFINAE constraint that
        first argument is not a std::thread. Add static assertion to check
        INVOKE expression is valid.
        (thread::thread(thread&), thread::thread(const thread&&)): Remove.
        (thread::_Invoke::_M_invoke, thread::_Invoke::operator()): Use
        __invoke_result for return types and remove exception specifications.
        * testsuite/30_threads/thread/cons/84535.cc: New.

        * include/std/future (__async_result_of): Use __invoke_result instead
        of result_of.

        * include/std/any (any_cast): Use __remove_cvref_t.
        * include/std/tuple (__make_tuple): Likewise.
        * include/std/type_traits (__remove_cvref_t): Define.
        (__result_of_memobj, __result_of_memfun): Use __remove_cvref_t.
        [__cplusplus > 201703L] (remove_cvref, remove_cvref_t): Define.
        * include/std/variant (__erased_hash): Use __remove_cvref_t.

2018-05-02  François Dumont  <fdumont@gcc.gnu.org>

        * include/bits/deque.tcc (deque<>::_M_assign_aux): Cast to void to
        ensure overloaded comma not used.
        * include/bits/list.tcc (list<>::_M_assign_dispatch): Likewise.
        * include/bits/vector.tcc (vector<>::_M_assign_aux): Likewise.
        * include/bits/stl_bvector.h (vector<bool>::_M_assign_aux): Likewise.
        * testsuite/23_containers/deque/modifiers/assign/1.cc: New.
        * testsuite/23_containers/list/modifiers/assign/1.cc: New.
        * testsuite/23_containers/vector/bool/modifiers/assign/1.cc: New.
        * testsuite/23_containers/vector/modifiers/assign/1.cc: New.

2018-05-02  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/68197
        * include/bits/ios_base.h (ios_base::iword, ios_base::pword): Cast
        indices to unsigned.
        * src/c++11/ios.cc (ios_base::_M_grow_words): Treat negative indices
        as failure. Refactor error handling.
        * testsuite/27_io/ios_base/storage/68197.cc: New.

        PR libstdc++/57997
        PR libstdc++/83860
        * include/bits/gslice_array.h (gslice_array): Define default
        constructor as deleted, as per C++11 standard.
        * include/bits/mask_array.h (mask_array): Likewise.
        * include/bits/slice_array.h (slice_array): Likewise.
        * include/bits/valarray_after.h (_GBase, _GClos, _IBase, _IClos): Move
        to namespace __detail.
        (_GBase::_M_expr, _IBase::_M_expr): Use _ValArrayRef for type of data
        members.
        * include/bits/valarray_before.h (_ValArrayRef): New helper for type
        of data members in closure objects.
        (_FunBase, _ValFunClos, _RefFunClos, _UnBase, _UnClos, _BinBase)
        (_BinBase2, _BinBase1, _BinClos, _SBase, _SClos): Move to namespace
        __detail.
        (_FunBase::_M_expr, _UnBase::_M_expr, _BinBase::_M_expr1)
        (_BinBase::_M_expr2, _BinBase2::_M_expr1, _BinBase1::_M_expr2)
        (_SBase::_M_expr): Use _ValArrayRef for type of data members.
        * include/std/valarray (_UnClos, _BinClos, _SClos, _GClos, _IClos)
        (_ValFunClos, _RefFunClos): Move to namespace __detail and add
        using-declarations to namespace std.
        * testsuite/26_numerics/valarray/83860.cc: New.

        * testsuite/backward/strstream_move.cc: Remove duplicate function
        call.

        PR libstdc++/69608
        * include/backward/strstream (strstreambuf): Define move constructor
        and move assignment operator.
        (istrstream, ostrstream, strstream): Likewise.
        * testsuite/backward/strstream_move.cc: New.

2018-05-01  Tulio Magno Quites Machado Filho  <tuliom@linux.vnet.ibm.com>

        PR libstdc++/84654
        * acinclude.m4: Set ENABLE_FLOAT128 instead of _GLIBCXX_USE_FLOAT128.
        * config.h.in: Remove references to _GLIBCXX_USE_FLOAT128.
        * configure: Regenerate.
        * include/Makefile.am: Replace the value of _GLIBCXX_USE_FLOAT128
        based on ENABLE_FLOAT128.
        * include/Makefile.in: Regenerate.
        * include/bits/c++config: Define _GLIBCXX_USE_FLOAT128.
        [!defined(__FLOAT128__) && !defined(__SIZEOF_FLOAT128__)]: Undefine
        _GLIBCXX_USE_FLOAT128.

2018-04-24  H.J. Lu  <hongjiu.lu@intel.com>

        * configure: Regenerated.

2018-04-19  Jakub Jelinek  <jakub@redhat.com>

        * configure: Regenerated.

2018-04-18  Jonathan Wakely  <jwakely@redhat.com>
            Jakub Jelinek  <jakub@redhat.com>

        PR libstdc++/85442
        * src/c++11/Makefile.am: Don't generate debuginfo again for
        cxx11-ios_failure-lt.s and cxx11-ios_failure.s files.
        * src/c++11/Makefile.in: Regenerate.

2018-04-18  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/84442
        * testsuite/30_threads/thread/cons/terminate.cc
        [!_GLIBCXX_USE_C99_STDLIB] : Use _exit or std::exit instead of _Exit.

2018-04-18  David Malcolm  <dmalcolm@redhat.com>

        PR jit/85384
        * configure: Regenerate.

2018-04-16  Jonathan Wakely  <jwakely@redhat.com>

        * testsuite/experimental/filesystem/file_status/1.cc: Add
        -DUSE_FILESYSTEM_TS to dg-options.
        * testsuite/experimental/filesystem/iterators/directory_iterator.cc:
        Likewise.
        * testsuite/experimental/filesystem/iterators/pop.cc: Likewise.
        * testsuite/experimental/filesystem/iterators/
        recursive_directory_iterator.cc: Likewise.
        * testsuite/experimental/filesystem/operations/absolute.cc: Likewise.
        * testsuite/experimental/filesystem/operations/canonical.cc: Likewise.
        * testsuite/experimental/filesystem/operations/copy.cc: Likewise.
        * testsuite/experimental/filesystem/operations/copy_file.cc: Likewise.
        * testsuite/experimental/filesystem/operations/create_directories.cc:
        Likewise.
        * testsuite/experimental/filesystem/operations/create_directory.cc:
        Likewise.
        * testsuite/experimental/filesystem/operations/create_symlink.cc:
        Likewise.
        * testsuite/experimental/filesystem/operations/current_path.cc:
        Likewise.
        * testsuite/experimental/filesystem/operations/equivalent.cc: Likewise.
        * testsuite/experimental/filesystem/operations/exists.cc: Likewise.
        * testsuite/experimental/filesystem/operations/file_size.cc: Likewise.
        * testsuite/experimental/filesystem/operations/is_empty.cc: Likewise.
        * testsuite/experimental/filesystem/operations/last_write_time.cc:
        Likewise.
        * testsuite/experimental/filesystem/operations/permissions.cc:
        Likewise.
        * testsuite/experimental/filesystem/operations/read_symlink.cc:
        Likewise.
        * testsuite/experimental/filesystem/operations/remove.cc: Likewise.
        * testsuite/experimental/filesystem/operations/remove_all.cc: Likewise.
        * testsuite/experimental/filesystem/operations/status.cc: Likewise.
        * testsuite/experimental/filesystem/operations/temp_directory_path.cc:
        Likewise.
        * testsuite/experimental/filesystem/path/append/path.cc: Likewise.
        * testsuite/experimental/filesystem/path/assign/assign.cc: Likewise.
        * testsuite/experimental/filesystem/path/assign/copy.cc: Likewise.
        * testsuite/experimental/filesystem/path/compare/compare.cc: Likewise.
        * testsuite/experimental/filesystem/path/compare/path.cc: Likewise.
        * testsuite/experimental/filesystem/path/compare/strings.cc: Likewise.
        * testsuite/experimental/filesystem/path/concat/path.cc: Likewise.
        * testsuite/experimental/filesystem/path/concat/strings.cc: Likewise.
        * testsuite/experimental/filesystem/path/construct/copy.cc: Likewise.
        * testsuite/experimental/filesystem/path/construct/default.cc:
        Likewise.
        * testsuite/experimental/filesystem/path/construct/locale.cc: Likewise.
        * testsuite/experimental/filesystem/path/construct/range.cc: Likewise.
        * testsuite/experimental/filesystem/path/construct/string_view.cc:
        Likewise.
        * testsuite/experimental/filesystem/path/decompose/extension.cc:
        Likewise.
        * testsuite/experimental/filesystem/path/decompose/filename.cc:
        Likewise.
        * testsuite/experimental/filesystem/path/decompose/parent_path.cc:
        Likewise.
        * testsuite/experimental/filesystem/path/decompose/relative_path.cc:
        Likewise.
        * testsuite/experimental/filesystem/path/decompose/root_directory.cc:
        Likewise.
        * testsuite/experimental/filesystem/path/decompose/root_name.cc:
        Likewise.
        * testsuite/experimental/filesystem/path/decompose/root_path.cc:
        Likewise.
        * testsuite/experimental/filesystem/path/decompose/stem.cc: Likewise.
        * testsuite/experimental/filesystem/path/generic/generic_string.cc:
        Likewise.
        * testsuite/experimental/filesystem/path/itr/traversal.cc: Likewise.
        * testsuite/experimental/filesystem/path/modifiers/clear.cc: Likewise.
        * testsuite/experimental/filesystem/path/modifiers/make_preferred.cc:
        Likewise.
        * testsuite/experimental/filesystem/path/modifiers/remove_filename.cc:
        Likewise.
        * testsuite/experimental/filesystem/path/modifiers/replace_extension.cc:
        Likewise.
        * testsuite/experimental/filesystem/path/modifiers/replace_filename.cc:
        Likewise.
        * testsuite/experimental/filesystem/path/modifiers/swap.cc: Likewise.
        * testsuite/experimental/filesystem/path/native/string.cc: Likewise.
        * testsuite/experimental/filesystem/path/nonmember/hash_value.cc:
        Likewise.
        * testsuite/experimental/filesystem/path/query/empty.cc: Likewise.
        * testsuite/experimental/filesystem/path/query/has_extension.cc:
        Likewise.
        * testsuite/experimental/filesystem/path/query/has_filename.cc:
        Likewise.
        * testsuite/experimental/filesystem/path/query/has_parent_path.cc:
        Likewise.
        * testsuite/experimental/filesystem/path/query/has_relative_path.cc:
        Likewise.
        * testsuite/experimental/filesystem/path/query/has_root_directory.cc:
        Likewise.
        * testsuite/experimental/filesystem/path/query/has_root_name.cc:
        Likewise.
        * testsuite/experimental/filesystem/path/query/has_root_path.cc:
        Likewise.
        * testsuite/experimental/filesystem/path/query/has_stem.cc: Likewise.
        * testsuite/experimental/filesystem/path/query/is_relative.cc:
        Likewise.

2018-04-13  Jonathan Wakely  <jwakely@redhat.com>

        * src/c++11/Makefile.am: Fix sed command.
        * src/c++11/Makefile.in: Regenerate.

        * src/c++11/Makefile.am: Rewrite sed rule to be less fragile and to
        handle mangled names starting with double underscores on darwin.
        * src/c++11/Makefile.in: Regenerate.

2018-04-12  Jonathan Wakely  <jwakely@redhat.com>

        * src/c++11/Makefile.am: Fix comment.
        * src/c++11/Makefile.in: Regenerate.
        * src/c++11/cxx11-ios_failure.cc: Fix comment.
        * src/c++98/ios_failure.cc: Likewise.

        * src/c++11/ios.cc: Remove redundant macro definition.

2018-04-11  Jonathan Wakely  <jwakely@redhat.com>

        * doc/xml/manual/abi.xml: Document header locations in recent
        releases.
        * doc/xml/manual/evolution.xml: Add API changes since GCC 5.
        * doc/xml/manual/spine.xml: Update copyright years.
        * doc/xml/manual/strings.xml: Adjust tolower example to avoid
        undefined behaviour.
        * doc/xml/manual/test.xml: Update outdated notes on VERIFY in tests.
        * doc/html/*: Regenerate.

2018-04-10  Jonathan Wakely  <jwakely@redhat.com>

        * doc/xml/faq.xml: Update links to archived copy of SGI STL docs.
        * doc/xml/manual/backwards_compatibility.xml: Likewise.
        * doc/xml/manual/containers.xml: Likewise.
        * doc/xml/manual/debug_mode.xml: Likewise.
        * doc/xml/manual/extensions.xml: Likewise.
        * doc/xml/manual/policy_data_structures_biblio.xml: Likewise.
        * doc/xml/manual/using.xml: Likewise.
        * doc/xml/manual/utilities.xml: Likewise.

        PR libstdc++/85222
        * src/c++11/Makefile.am [ENABLE_DUAL_ABI]: Add special rules for
        cxx11-ios_failure.cc to rewrite type info for __ios_failure.
        * src/c++11/Makefile.in: Regenerate.
        * src/c++11/cxx11-ios_failure.cc (__ios_failure, __iosfail_type_info):
        New types.
        [_GLIBCXX_USE_DUAL_ABI] (__throw_ios_failure): Define here.
        * src/c++11/ios.cc (__throw_ios_failure): Remove definition.
        * src/c++98/ios_failure.cc (__construct_ios_failure)
        (__destroy_ios_failure, is_ios_failure_handler): New functions.
        [!_GLIBCXX_USE_DUAL_ABI] (__throw_ios_failure): Define here.
        * testsuite/27_io/ios_base/failure/dual_abi.cc: New.
        * testsuite/27_io/basic_ios/copyfmt/char/1.cc: Revert changes to
        handler types, to always catch std::ios_base::failure.
        * testsuite/27_io/basic_ios/exceptions/char/1.cc: Likewise.
        * testsuite/27_io/basic_istream/extractors_arithmetic/char/
        exceptions_failbit.cc: Likewise.
        * testsuite/27_io/basic_istream/extractors_arithmetic/wchar_t/
        exceptions_failbit.cc: Likewise.
        * testsuite/27_io/basic_istream/extractors_other/char/
        exceptions_null.cc: Likewise.
        * testsuite/27_io/basic_istream/extractors_other/wchar_t/
        exceptions_null.cc: Likewise.
        * testsuite/27_io/basic_istream/sentry/char/12297.cc: Likewise.
        * testsuite/27_io/basic_istream/sentry/wchar_t/12297.cc: Likewise.
        * testsuite/27_io/basic_ostream/inserters_other/char/
        exceptions_null.cc: Likewise.
        * testsuite/27_io/basic_ostream/inserters_other/wchar_t/
        exceptions_null.cc: Likewise.
        * testsuite/27_io/ios_base/storage/2.cc: Likewise.

2018-04-05  Jonathan Wakely  <jwakely@redhat.com>

        * include/std/variant (_VARIANT_RELATION_FUNCTION_TEMPLATE): Qualify
        __get calls to avoid ADL and avoid ambiguity due to Clang bug.

2018-04-03  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/85183
        * include/std/variant (_Move_assign_base::operator=): Fix incorrect
        value categories.
        * testsuite/20_util/variant/85183.cc: New.

2018-03-26  Jonathan Wakely  <jwakely@redhat.com>

        * include/std/variant (__get): Qualify calls to avoid ADL.
        (__select_index): Adjust whitespace.
        (variant): Add using-declaration to workaround Clang bug.

2018-03-22  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/85040
        * include/bits/stl_function.h (greater::__not_overloaded)
        (less::__not_overloaded, greater_equal::__not_overloaded)
        (less_equal::__not_overloaded): Fix ambiguous specializations.
        * testsuite/20_util/function_objects/comparisons_pointer.cc: Add
        tests for type with overloaded operators.

2018-03-22  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

        PR libstdc++/77691
        * testsuite/experimental/memory_resource/resource_adaptor.cc:
        xfail execution on 32-bit Solaris/x86.

2018-03-21  Jonathan Wakely  <jwakely@redhat.com>

        * testsuite/20_util/function_objects/comparisons_pointer.cc: Use
        VERIFY instead of assert.
        * testsuite/20_util/hash/84998.cc: New test.
        * testsuite/23_containers/vector/cons/destructible_debug_neg.cc: New
        copy of test adjusted for Debug Mode.
        * testsuite/23_containers/vector/cons/destructible_neg.cc: Do not run
        test in Debug Mode.

2018-03-20  François Dumont  <fdumont@gcc.gnu.org>

        PR libstdc++/84998
        * include/bits/stl_bvector.h: Fix std::hash friend declaration.
        * include/std/bitset: Likewise.
        * include/bits/stl_map.h (std::map<>): Fix _Rb_tree_merge_helper friend
        declaration.
        * include/bits/stl_multimap.h (std::multimap<>): Likewise.
        * include/bits/stl_multiset.h (std::multiset<>): Likewise.
        * include/bits/stl_set.h (std::set<>): Likewise.
        * include/bits/unordered_map.h (std::unordered_map<>): Fix
        _Hash_merge_helper friend declaration.
        (std::unordered_multimap<>): Likewise.
        * include/bits/unordered_set.h (std::unordered_set<>): Likewise.
        (std::unordered_multiset<>): Likewise.

2018-03-19  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/xml/api.xml: www.fsf.org has moved to https. Also omit
        trailing slash for domain level link.
        * doc/xml/faq.xml: Ditto.
        * doc/xml/manual/appendix_free.xml (software): Ditto.
        * doc/xml/manual/intro.xml: Ditto.
        * doc/xml/manual/spine.xml: Ditto.
        * doc/xml/spine.xml: Ditto.

2018-03-19  Gerald Pfeifer  <gerald@pfeifer.com>

        * doc/xml/manual/documentation_hacking.xml: Adjust link to
        docbook.org.

2018-03-17  Jonathan Wakely  <jwakely@redhat.com>

        * testsuite/20_util/function_objects/comparisons_pointer.cc: Adjust
        to compile as C++98.

2018-03-14  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/78420
        * include/bits/stl_function.h (greater<_Tp*>, less<_Tp*>)
        (greater_equal<_Tp*>, less_equal<_Tp>*): Add partial specializations
        to ensure total order for pointers.
        (greater<void>, less<void>, greater_equal<void>, less_equal<void>):
        Add operator() overloads for pointer arguments and make generic
        overloads dispatch to new _S_cmp functions when comparisons would
        use built-in operators for pointers.
        * testsuite/20_util/function_objects/comparisons_pointer.cc: New.

2018-03-12  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/84773
        PR libstdc++/83662
        * crossconfig.m4: Check for aligned_alloc etc. on freebsd and mingw32.
        * configure: Regenerate.
        * include/c_global/cstdlib [_GLIBCXX_HAVE_ALIGNED_ALLOC]
        (aligned_alloc): Add using-declaration.
        * testsuite/18_support/aligned_alloc/aligned_alloc.cc: New test.

2018-03-09  François Dumont  <fdumont@gcc.gnu.org>

        * python/libstdcxx/v6/printers.py (build_libstdcxx_dictionary):
        Fix std::_Fwd_list_iterator and std::_Fwd_list_const_iterator printers
        registration.

2018-03-09  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/84769
        * include/std/variant (get<_Tp, _Types...>, get_if<_Tp, _Types...>):
        Qualify calls to get<_Np, Types...> and get_if<_Np, _Types...>.

        src/filesystem/ops.cc (create_dir): Pass error_code to is_directory.
        src/filesystem/std-ops.cc (create_dir): Likewise.

2018-03-08  François Dumont  <fdumont@gcc.gnu.org>

        * python/libstdcxx/v6/printers.py (NodeIteratorPrinter): New.
        (StdListIteratorPrinter): Inherit from latter.
        (StdFwdListIteratorPrinter): New, inherit from latter.
        (StdDebugIteratorPrinter.to_string): Use non-debug iterator printer
        when iterator has no associated container.
        (build_libstdcxx_dictionary): Add __gnu_cxx::_Fwd_list_iterator and
        __gnu_cxx::_Fwd_list_const_iterator printers. Remove __norm namespace
        registrations.
        * testsuite/libstdc++-prettyprinters/debug.cc: Adapt.
        * testsuite/libstdc++-prettyprinters/debug_cxx11.cc: Adapt.

2018-03-06  Ville Voutilainen  <ville.voutilainen@gmail.com>

        PR libstdc++/84601
        * include/std/optional (_Optional_payload): Split into multiple
        specializations that can handle different cases of trivial or
        non-trivial assignment operators.
        * testsuite/20_util/optional/84601.cc: New.
        * testsuite/20_util/optional/cons/value_neg.cc: Adjust.

2018-03-02  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/84671
        * include/bits/parse_numbers.h (_Number_help): Add partial
        specialization to handle digit separators. Adjust partial
        specialization for recursion temrination to require _Pow == 1ULL.
        * testsuite/20_util/duration/literals/84671.cc: New

2018-02-27  Ville Voutilainen  <ville.voutilainen@gmail.com>

        Implement the missing bits of LWG 2769
        * include/std/any (any_cast(const any&)): Add static_assert.
        (any_cast(any&)): Likewise.
        (any_cast(any&&)): Likewise, and remove the handling
        for copyable-but-not-movable type.
        * testsuite/20_util/any/misc/any_cast.cc: Adjust.
        * testsuite/20_util/any/misc/any_cast_neg.cc: Likewise, and
        add new tests.

2018-02-23  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/84532
        * include/std/thread (thread::__make_invoker): Construct tuple
        directly instead of using make_tuple.
        * testsuite/30_threads/async/84532.cc: New.
        * testsuite/30_threads/thread/84532.cc: New.

2018-02-20  François Dumont  <fdumont@gcc.gnu.org>

        * include/ext/aligned_buffer.h [_GLIBCXX_INLINE_VERSION]
        (template<> __aligned_buffer): Define as __aligned_membuf alias.

2018-02-19  Igor Tsimbalist  <igor.v.tsimbalist@intel.com>

        PR target/84148
        * configure: Regenerate.

2018-02-15  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/81797
        * configure.ac (INCLUDE_DIR_NOTPARALLEL): Define.
        * configure: Regenerate.
        * include/Makefile.am (INCLUDE_DIR_NOTPARALLEL): Add .NOTPARALLEL when
        defined.
        * include/Makefile.in: Regenerate.

2018-01-29  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/83833
        * testsuite/26_numerics/random/chi_squared_distribution/83833.cc:
        Add -ffloat-store to options for m68k and ia32.

        * doc/xml/faq.xml: Update copyright years.
        * doc/html/*: Regenerate.

        PR libstdc++/83658
        * include/std/any (any::__do_emplace): Only set _M_manager after
        constructing the contained object.
        * testsuite/20_util/any/misc/any_cast_neg.cc: Adjust dg-error line.
        * testsuite/20_util/any/modifiers/83658.cc: New test.

2018-01-25  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/81076
        * include/c_global/cstddef (__byte_operand): Define primary template.
        * testsuite/18_support/byte/81076.cc: New test.

2018-01-19  Christophe Lyon  <christophe.lyon@linaro.org>

        * testsuite/ext/special_functions/airy_ai/check_nan.cc: Fix
        dg-options and dg-add-options order.
        * testsuite/ext/special_functions/airy_bi/check_nan.cc: Likewise.
        * testsuite/ext/special_functions/conf_hyperg/check_nan.cc:
        Likewise.
        * testsuite/ext/special_functions/hyperg/check_nan.cc: Likewise.
        * testsuite/special_functions/01_assoc_laguerre/check_nan.cc:
        Likewise.
        * testsuite/special_functions/02_assoc_legendre/check_nan.cc:
        Likewise.
        * testsuite/special_functions/03_beta/check_nan.cc: Likewise.
        * testsuite/special_functions/04_comp_ellint_1/check_nan.cc:
        Likewise.
        * testsuite/special_functions/05_comp_ellint_2/check_nan.cc:
        Likewise.
        * testsuite/special_functions/06_comp_ellint_3/check_nan.cc:
        Likewise.
        * testsuite/special_functions/06_comp_ellint_3/pr66689.cc:
        Likewise.
        * testsuite/special_functions/07_cyl_bessel_i/check_nan.cc:
        Likewise.
        * testsuite/special_functions/08_cyl_bessel_j/check_nan.cc:
        Likewise.
        * testsuite/special_functions/09_cyl_bessel_k/check_nan.cc:
        Likewise.
        * testsuite/special_functions/10_cyl_neumann/check_nan.cc:
        Likewise.
        * testsuite/special_functions/11_ellint_1/check_nan.cc: Likewise.
        * testsuite/special_functions/12_ellint_2/check_nan.cc: Likewise.
        * testsuite/special_functions/13_ellint_3/check_nan.cc: Likewise.
        * testsuite/special_functions/13_ellint_3/pr66689.cc: Likewise.
        * testsuite/special_functions/14_expint/check_nan.cc: Likewise.
        * testsuite/special_functions/15_hermite/check_nan.cc: Likewise.
        * testsuite/special_functions/16_laguerre/check_nan.cc: Likewise.
        * testsuite/special_functions/17_legendre/check_nan.cc: Likewise.
        * testsuite/special_functions/18_riemann_zeta/check_nan.cc:
        Likewise.
        * testsuite/special_functions/19_sph_bessel/check_nan.cc:
        Likewise.
        * testsuite/special_functions/20_sph_legendre/check_nan.cc:
        Likewise.
        * testsuite/special_functions/21_sph_neumann/check_nan.cc:
        Likewise.

2018-01-18  Uros Bizjak  <ubizjak@gmail.com>

        * configure.ac (AC_CHECK_HEADERS): Add linux/types.h.  Conditionally
        include linux/types.h when checking linux/random.h header.
        * config.h.in: Regenerate.
        * configure: Ditto.
        * src/c++11/random.cc: Conditionally include linux/types.h.

2018-01-16  Eric Botcazou  <ebotcazou@adacore.com>

        * testsuite/17_intro/names.cc: Undefine 'y' on SPARC/Linux.

2018-01-16  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/83834
        * config/abi/pre/gnu.ver (GLIBCXX_3.4): Replace std::c[a-g]* wildcard
        pattern with exact match for std::cerr.

2018-01-15  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/83833
        * include/bits/random.h (chi_squared_distribution::param): Update
        gamma distribution parameter.
        * testsuite/26_numerics/random/chi_squared_distribution/83833.cc: New
        test.

        PR libstdc++/83830
        * include/std/type_traits (has_unique_object_representations_v): Add
        variable template.
        * testsuite/20_util/has_unique_object_representations/value.cc: Check
        variable template.

2018-01-15  Ville Voutilainen  <ville.voutilainen@gmail.com>

        Make optional conditionally
        trivially_{copy,move}_{constructible,assignable}
        * include/std/optional (_Optional_payload): Fix the comment in
        the class head and turn into a primary and one specialization.
        (_Optional_payload::_M_engaged): Strike the NSDMI.
        (_Optional_payload<_Tp, false>::operator=(const _Optional_payload&)):
        New.
        (_Optional_payload<_Tp, false>::operator=(_Optional_payload&&)):
        Likewise.
        (_Optional_payload<_Tp, false>::_M_get): Likewise.
        (_Optional_payload<_Tp, false>::_M_reset): Likewise.
        (_Optional_base_impl): Likewise.
        (_Optional_base): Turn into a primary and three specializations.
        (optional(nullopt)): Change the base init.
        * testsuite/20_util/optional/assignment/8.cc: New.
        * testsuite/20_util/optional/cons/trivial.cc: Likewise.
        * testsuite/20_util/optional/cons/value_neg.cc: Adjust.

2018-01-15  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/80276
        * python/libstdcxx/v6/printers.py (strip_inline_namespaces): New.
        (get_template_arg_list): New.
        (StdVariantPrinter._template_args): Remove, use get_template_arg_list
        instead.
        (TemplateTypePrinter): Rewrite to work with gdb.Type objects instead
        of strings and regular expressions.
        (add_one_template_type_printer): Adapt to new TemplateTypePrinter.
        (FilteringTypePrinter): Add docstring. Match using startswith. Use
        strip_inline_namespaces instead of strip_versioned_namespace.
        (add_one_type_printer): Prepend namespace to match argument.
        (register_type_printers): Add type printers for char16_t and char32_t
        string types and for types using cxx11 ABI. Update calls to
        add_one_template_type_printer to provide default argument dicts.
        * testsuite/libstdc++-prettyprinters/80276.cc: New test.
        * testsuite/libstdc++-prettyprinters/whatis.cc: Remove tests for
        basic_string<unsigned char> and basic_string<signed char>.
        * testsuite/libstdc++-prettyprinters/whatis2.cc: Duplicate whatis.cc
        to test local variables, without overriding _GLIBCXX_USE_CXX11_ABI.

2018-01-14  Andreas Schwab  <schwab@linux-m68k.org>

        PR libstdc++/81092
        * config/abi/post/ia64-linux-gnu/baseline_symbols.txt: Update.

2018-01-13  Tim Shen  <timshen@google.com>

        PR libstdc++/83601
        * include/bits/regex.tcc (regex_replace): Fix escaping in sed.
        * testsuite/28_regex/algorithms/regex_replace/char/pr83601.cc: Tests.
        * testsuite/28_regex/algorithms/regex_replace/wchar_t/pr83601.cc: Tests.

2018-01-12  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

        PR libstdc++/64054
        * testsuite/27_io/basic_ostream/inserters_arithmetic/char/hexfloat.cc:
        Remove dg-xfail-run-if.

2018-01-10  François Dumont  <fdumont@gcc.gnu.org>

        * include/bits/forward_list.h
        (_Fwd_list_node_base(_Fwd_list_node_base&&)): New.
        (_Fwd_list_node_base& operator=(_Fwd_list_node_base&&)): New.
        (_Fwd_list_node_base(const _Fwd_list_node_base&)): Explicit delete.
        (_Fwd_list_node_base& operator=(const _Fwd_list_node_base&)): Likewise.
        (_Fwd_list_impl()): Add noexcept qualification.
        (_Fwd_list_impl(const _Node_alloc_type&)): Delete.
        (_Fwd_list_impl(_Fwd_list_impl&&)): New, default.
        (_Fwd_list_impl(_Fwd_list_impl&&, _Node_alloc_type&&)): New.
        (_Fwd_list_base()): Default.
        (_Fwd_list_base(_Fwd_list_base&&, _Node_alloc_type&&, true_type)): New.
        (_Fwd_list_base(_Fwd_list_base&&)): Default.
        (forward_list<>()): Default.
        (forward_list<>(forward_list&&)): Default.
        (forward_list(forward_list&&, _Node_alloc_type&&, false_type)): New.
        (forward_list(forward_list&&, _Node_alloc_type&&, true_type)): New.
        (forward_list(forward_list&&, const _Alloc&)): Adapt to use latters.
        * include/bits/forward_list.tcc
        (_Fwd_list_base(_Fwd_list_base&&, _Node_alloc_type&&)): Adapt to use
        _M_impl._M_head move assignment.
        (forward_list<>::merge(forward_list<>&&, _Comp)): Likewise.
        * testsuite/23_containers/forward_list/allocator/default_init.cc: New.

2018-01-09  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/80276
        * python/libstdcxx/v6/printers.py (SharedPointerPrinter)
        (UniquePointerPrinter): Print correct template argument, not type of
        the pointer.
        (TemplateTypePrinter._recognizer.recognize): Handle failure to lookup
        a type.
        * testsuite/libstdc++-prettyprinters/cxx11.cc: Test unique_ptr of
        array type.
        * testsuite/libstdc++-prettyprinters/cxx17.cc: Test shared_ptr and
        weak_ptr of array types.

2018-01-09  François Dumont  <fdumont@gcc.gnu.org>

        PR libstdc++/83709
        * include/bits/hashtable_policy.h
        (__distance_fwd(_Iterator, _Iterator, input_iterator_tag)): Return 1 if
        __first != __last.
        (_Insert_base::_M_insert_range(_Ite, _Ite, _NodeGetter, true_type)): New.
        (_Insert_base::_M_insert_range(_Ite, _Ite, _NodeGetter, false_type)):
        Add false_type parameter.
        (_Insert_base::insert): Adapt.
        * include/bits/hashtable.h (_Hashtable::operator=(initializzr_list<>)):
        Adapt.
        (_Hashtable::_M_insert(_Arg&&, const _NodeGen&, true_type, size_t)):
         Add __n_elt parameter, defaulted to 1.
        (_Hashtable::_M_insert_unique_node): Likewise. Use it to call rehash
        policy _M_need_rehash.
        (_Hashtable::_M_merge_unique): Pass target number of elements to add to
        produce only 1 rehash if necessary.
        * testsuite/23_containers/unordered_map/insert/83709.cc: New.
        * testsuite/23_containers/unordered_set/insert/83709.cc: New.

2018-01-09  Juraj Oršulić  <juraj.orsulic@fer.hr>
            Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/59253 (partial)
        * python/libstdcxx/v6/printers.py (SmartPtrIterator): Common iterator
        type for pointer stored by shared_ptr, weak_ptr and unique_ptr.
        (SharedPointerPrinter, UniquePointerPrinter): Treat stored values as
        children.
        * testsuite/libstdc++-prettyprinters/cxx11.cc: Update expected output
        of unique_ptr printer.
        * testsuite/libstdc++-prettyprinters/shared_ptr.cc: Update expected
        output of shared_ptr printer.

2018-01-05  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/83626
        * src/filesystem/ops.cc (remove(const path&, error_code&)): Remove
        unnecessary symlink_status call.
        (remove_all(const path&, error_code&)): Use filesystem::remove.
        * src/filesystem/std-ops.cc: Likewise.

        PR libstdc++/83279
        * src/filesystem/std-ops.cc  (do_copy_file): Use non-null offset with
        sendfile.

        PR libstdc++/83626
        * src/filesystem/ops.cc (remove(const path&, error_code&)): Do not
        report an error for ENOENT.
        (remove_all(const path&)): Fix type of result variable.
        (remove_all(const path&, error_code&)): Use non-throwing increment
        for directory iterator. Call POSIX remove directly to avoid redundant
        calls to symlink_status. Do not report errors for ENOENT.
        * src/filesystem/std-ops.cc: Likewise.
        * testsuite/27_io/filesystem/operations/remove_all.cc: Test throwing
        overload.
        * testsuite/experimental/filesystem/operations/remove_all.cc:
        Likewise.

2018-01-04  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/83626
        * src/filesystem/ops.cc (remove(const path&, error_code&))): Remove
        redundant call to ec.clear().
        (remove_all(const path&, error_code&))): Do not return an error for
        non-existent paths.
        * src/filesystem/std-ops.cc: Likewise.
        * testsuite/27_io/filesystem/operations/remove.cc: New test.
        * testsuite/27_io/filesystem/operations/remove_all.cc: Fix expected
        results for non-existent paths.
        * testsuite/experimental/filesystem/operations/remove.cc: New test.
        * testsuite/experimental/filesystem/operations/remove_all.cc: Fix
        expected results for non-existent paths.

        * include/bits/fs_ops.h (exists(const path&, error_code&))): Only
        check status_known once.
        * include/experimental/bits/fs_ops.h: Likewise.

        PR libstdc++/83607
        * include/std/functional (__is_byte_like): New trait.
        (__is_std_equal_to): Remove.
        (__boyer_moore_base_t): Use __is_byte_like instead of
        __is_std_equal_to.
        * include/experimental/functional (__is_std_equal_to): Remove.
        (__boyer_moore_base_t): Use __is_byte_like instead of
        __is_std_equal_to.
        * testsuite/20_util/function_objects/83607.cc: New test.

2018-01-03  Ville Voutilainen  <ville.voutilainen@gmail.com>

        Protect optional's deduction guide with the feature macro
        * include/std/optional: Use the feature macro.

2018-01-03  Jakub Jelinek  <jakub@redhat.com>

        Update copyright years.
\f
Copyright (C) 2018 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.