cstddef: Add versioned namespace.

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

2018-10-24  François Dumont  <fdumont@gcc.gnu.org>

        * include/c_global/cstddef: Add versioned namespace.

2018-10-23  Jonathan Wakely  <jwakely@redhat.com>

        PR libstdc++/87704
        * include/bits/unique_ptr.h (unique_ptr::unique_ptr(nullptr_t)): Do
        not delegate to default constructor.
        (unique_ptr<T[], D>::unique_ptr(nullptr_t)): Likewise.
        * testsuite/20_util/unique_ptr/cons/incomplete.cc: New test.

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
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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.