gcc/libstdc++-v3/ChangeLog

2018-11-20  Ville Voutilainen  <ville.voutilainen@gmail.com>

	Housekeeping for the effective targets of optional's tests.
	* testsuite/20_util/optional/77288.cc: Adjust.
	* testsuite/20_util/optional/84601.cc: Likewise.
	* testsuite/20_util/optional/assignment/1.cc: Likewise.
	* testsuite/20_util/optional/assignment/2.cc: Likewise.
	* testsuite/20_util/optional/assignment/3.cc: Likewise.
	* testsuite/20_util/optional/assignment/4.cc: Likewise.
	* testsuite/20_util/optional/assignment/5.cc: Likewise.
	* testsuite/20_util/optional/assignment/6.cc: Likewise.
	* testsuite/20_util/optional/assignment/7.cc: Likewise.
	* testsuite/20_util/optional/assignment/8.cc: Likewise.
	* testsuite/20_util/optional/cons/77727.cc: Likewise.
	* testsuite/20_util/optional/cons/copy.cc: Likewise.
	* testsuite/20_util/optional/cons/deduction.cc: Likewise.
	* testsuite/20_util/optional/cons/default.cc: Likewise.
	* testsuite/20_util/optional/cons/move.cc: Likewise.
	* testsuite/20_util/optional/cons/trivial.cc: Likewise.
	* testsuite/20_util/optional/cons/value.cc: Likewise.
	* testsuite/20_util/optional/cons/value_neg.cc: Likewise.
	* testsuite/20_util/optional/constexpr/cons/default.cc: Likewise.
	* testsuite/20_util/optional/constexpr/cons/value.cc: Likewise.
	* testsuite/20_util/optional/constexpr/in_place.cc: Likewise.
	* testsuite/20_util/optional/constexpr/nullopt.cc: Likewise.
	* testsuite/20_util/optional/constexpr/observers/1.cc: Likewise.
	* testsuite/20_util/optional/constexpr/observers/4.cc: Likewise.
	* testsuite/20_util/optional/constexpr/observers/5.cc: Likewise.
	* testsuite/20_util/optional/constexpr/relops/1.cc: Likewise.
	* testsuite/20_util/optional/constexpr/relops/2.cc: Likewise.
	* testsuite/20_util/optional/constexpr/relops/3.cc: Likewise.
	* testsuite/20_util/optional/constexpr/relops/4.cc: Likewise.
	* testsuite/20_util/optional/constexpr/relops/5.cc: Likewise.
	* testsuite/20_util/optional/constexpr/relops/6.cc: Likewise.
	* testsuite/20_util/optional/in_place.cc: Likewise.
	* testsuite/20_util/optional/make_optional.cc: Likewise.
	* testsuite/20_util/optional/nullopt.cc: Likewise.
	* testsuite/20_util/optional/observers/1.cc: Likewise.
	* testsuite/20_util/optional/observers/2.cc: Likewise.
	* testsuite/20_util/optional/observers/3.cc: Likewise.
	* testsuite/20_util/optional/observers/4.cc: Likewise.
	* testsuite/20_util/optional/observers/5.cc: Likewise.
	* testsuite/20_util/optional/observers/6.cc: Likewise.
	* testsuite/20_util/optional/relops/1.cc: Likewise.
	* testsuite/20_util/optional/relops/2.cc: Likewise.
	* testsuite/20_util/optional/relops/3.cc: Likewise.
	* testsuite/20_util/optional/relops/4.cc: Likewise.
	* testsuite/20_util/optional/relops/5.cc: Likewise.
	* testsuite/20_util/optional/relops/6.cc: Likewise.
	* testsuite/20_util/optional/relops/7.cc: Likewise.
	* testsuite/20_util/optional/requirements.cc: Likewise.
	* testsuite/20_util/optional/swap/1.cc: Likewise.
	* testsuite/20_util/optional/swap/2.cc: Likewise.
	* testsuite/20_util/optional/typedefs.cc: Likewise.

2018-11-19  François Dumont  <fdumont@gcc.gnu.org>

	* include/ext/throw_allocator.h
	(annotate_base::insert(void*, size_t)): Use insert result to check for
	double insert attempt.
	(annotate_base::insert_construct(void*)): Likewise.
	(annotate_base::check_allocated(void*, size_t)): Return found iterator.
	(annotate_base::erase(void*, size_t)): Use latter method returned
	iterator.
	(annotate_base::check_constructed(void*, size_t)): Return found iterator.
	(annotate_base::erase_construct(void*)): Use latter method returned
	iterator.

2018-11-19  Ville Voutilainen  <ville.voutilainen@gmail.com>

	PR libstdc++/87855
	Also implement P0602R4 (variant and optional
	should propagate copy/move triviality) for std::optional.
	* include/std/optional (_Optional_payload): Change
	the main constraints to check constructibility in
	addition to assignability.
	(operator=): Make constexpr.
	(_M_reset): Likewise.
	(_M_construct): Likewise.
	(operator->): Likewise.
	* testsuite/20_util/optional/assignment/8.cc: Adjust.
	* testsuite/20_util/optional/assignment/9.cc: New.

2018-11-19  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/88084 - Implement LWG 2777
	* include/std/string_view (basic_string_view::copy): Use traits to
	copy.
	* testsuite/21_strings/basic_string_view/operations/copy/char/2.cc:
	New test.
	* testsuite/21_strings/basic_string_view/operations/copy/wchar_t/2.cc:
	New test.

2018-11-18  Michele Pezzutti <mpezz@tiscali.it>
	    Edward Smith-Rowland  <3dw4rd@verizon.net>

	PR libstdc++/83566 - cyl_bessel_j returns wrong result for x>1000
	for high orders.
	* include/tr1/bessel_function.tcc: Perform no fewer than nu/2 iterations
	of the asymptotic series (nu is the Bessel order).
	* testsuite/tr1/5_numerical_facilities/special_functions/
	09_cyl_bessel_j/check_value.cc: Add tests at nu=100, 1000<=x<=2000.
	* testsuite/tr1/5_numerical_facilities/special_functions/
	11_cyl_neumann/check_value.cc: Ditto.
	* testsuite/special_functions/08_cyl_bessel_j/check_value.cc: Ditto.
	* testsuite/special_functions/10_cyl_neumann/check_value.cc: Ditto.

2018-11-17  Jonathan Wakely  <jwakely@redhat.com>

	Implement std::pmr::synchronized_pool_resource
	* config/abi/pre/gnu.ver: Add new symbols.
	* include/std/memory_resource [_GLIBCXX_HAS_GTHREADS]
	(__cpp_lib_memory_resource): Define to expected value, 201603.
	(synchronized_pool_resource): New class.
	[!_GLIBCXX_HAS_GTHREADS] (__cpp_lib_memory_resource): Define to 1.
	* include/std/shared_mutex (__glibcxx_rwlock_rdlock)
	(__glibcxx_rwlock_tryrdlock, __glibcxx_rwlock_wrlock)
	(__glibcxx_rwlock_trywrlock, __glibcxx_rwlock_unlock)
	(__glibcxx_rwlock_destroy, __glibcxx_rwlock_init)
	(__glibcxx_rwlock_timedrdlock, __glibcxx_rwlock_timedwrlock): Define
	weak symbols for POSIX rwlock functions.
	(__shared_mutex_pthread): Use weak symbols.
	* include/std/version (__cpp_lib_memory_resource): Define.
	* src/c++17/memory_resource.cc [_GLIBCXX_HAS_GTHREADS]
	(synchronized_pool_resource::_TPools): New class.
	(destroy_TPools): New function for pthread_key_create destructor.
	(synchronized_pool_resource::synchronized_pool_resource)
	(synchronized_pool_resource::~synchronized_pool_resource)
	(synchronized_pool_resource::release)
	(synchronized_pool_resource::do_allocate)
	(synchronized_pool_resource::do_deallocate): Define public members.
	(synchronized_pool_resource::_M_thread_specific_pools)
	(synchronized_pool_resource::_M_alloc_tpools)
	(synchronized_pool_resource::_M_alloc_shared_tpools): Define private
	members.
	* testsuite/20_util/synchronized_pool_resource/allocate.cc: New test.
	* testsuite/20_util/synchronized_pool_resource/cons.cc: New test.
	* testsuite/20_util/synchronized_pool_resource/is_equal.cc: New test.
	* testsuite/20_util/synchronized_pool_resource/multithreaded.cc: New
	test.
	* testsuite/20_util/synchronized_pool_resource/release.cc: New test.
	* testsuite/performance/20_util/memory_resource/pools.cc: Add
	multithreaded tests using pmr::synchronized_pool_resource.

2018-11-16  Renlin Li  <renlin.li@arm.com>
	    Tejas Belagod  <tejas.belagod@arm.com>

	testsuite/lib/libstdc++.exp (check_v3_target_prop_cached): New proc.
	(check_v3_target): Use the check_v3_target_prop_cached.

2018-11-15  Jonathan Wakely  <jwakely@redhat.com>

	* scripts/check_performance: Allow tests to choose a -std flag.
	* src/c++17/memory_resource.cc (bitset::get_first_unset()): Use local
	variables of the right types. Call update_next_word() unconditionally.
	* testsuite/20_util/unsynchronized_pool_resource/cons.cc: New test.
	* testsuite/performance/20_util/memory_resource/pools.cc: New test.
	* testsuite/util/testsuite_performance.h (time_counter): Allow
	timer to be restarted.

	* testsuite/20_util/unsynchronized_pool_resource/allocate.cc: Fix
	test for 32-bit targets. Test additional allocation sizes.

2018-11-14  Jonathan Wakely  <jwakely@redhat.com>

	* scripts/create_testsuite_files: Add special_functions to the list
	of directories to search. Add comment referring to conformance.exp.
	* testsuite/libstdc++-dg/conformance.exp: Add comment referring
	to create_testsuite_files.

2018-11-13  Jonathan Wakely  <jwakely@redhat.com>

	* src/c++17/memory_resource.cc (select_num_pools): Fix off-by-one
	error when block_size is equal to one of the values in the array.

	* src/c++17/memory_resource.cc (_Pool::deallocate): Restore
	attributes to parameters that are only used in assertions.

	* src/c++17/memory_resource.cc (bitset::find_first_unset()): Remove
	unused function.
	(bitset::get_first_unset()): Remove loop, if there's are unset bits
	then _M_next_word refers to the first one and there's no need to loop.
	(_Pool::_Pool(size_t, size_t), _Pool::block_size()): Remove dead code.

	* src/c++17/memory_resource.cc (munge_options): Round up value of
	largest_required_pool_block to multiple of smallest pool size. Round
	excessively large values down to largest pool size.
	(select_num_pools): Increase number of pools by one unless it exactly
	matches requested largest_required_pool_block.
	(__pool_resource::_M_alloc_pools()): Make largest pool size equal
	largest_required_pool_block.
	* testsuite/20_util/unsynchronized_pool_resource/options.cc: Check
	that pool_options::largest_required_pool_block is set appropriately.

	* src/c++17/memory_resource.cc (big_block): Improve comments.
	(big_block::all_ones): Remove.
	(big_block::big_block(size_t, size_t)): Use alloc_size.
	(big_block::size()): Add comment, replace all_ones with equivalent
	expression.
	(big_block::align()): Shift value of correct type.
	(big_block::alloc_size(size_t)): New function to round up size.
	(__pool_resource::allocate(size_t, size_t)): Add comment.
	(__pool_resource::deallocate(void*, size_t, size_t)): Likewise. Fix
	incorrect assertion by using big_block::alloc_size(size_t).
	* testsuite/20_util/unsynchronized_pool_resource/allocate.cc: Add
	more tests for unpooled allocations.

	* src/c++17/memory_resource.cc (bitset::full()): Handle edge case
	for _M_next_word maximum value.
	(bitset::get_first_unset(), bitset::set(size_type)): Use
	update_next_word() to update _M_next_word.
	(bitset::update_next_word()): New function, avoiding wraparound of
	unsigned _M_next_word member.
	(bitset::max_word_index()): New function.
	(chunk::chunk(void*, uint32_t, void*, size_t)): Add assertion.
	(chunk::max_bytes_per_chunk()): New function.
	(pool::replenish(memory_resource*, const pool_options&)): Prevent
	_M_blocks_per_chunk from exceeding max_blocks_per_chunk or from
	causing chunk::max_bytes_per_chunk() to be exceeded.
	* testsuite/20_util/unsynchronized_pool_resource/allocate-max-chunks.cc:
	New test.

2018-11-12  Jason Merrill  <jason@redhat.com>

	* libsupc++/new (std::destroying_delete_t): New.

2018-11-12  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/87963
	* src/c++17/memory_resource.cc (chunk::_M_bytes): Change type from
	unsigned to uint32_t.
	(chunk): Fix static assertion for 64-bit targets that aren't LP64.
	(bigblock::all_ones): Fix undefined shift.

2018-11-11  Hans-Peter Nilsson  <hp@axis.com>

	PR libstdc++-v3/54005
	* include/bits/atomic_base.h (__atomic_base<_TTp>::is_lock_free(),
	__atomic_base<_PTp*>::is_lock_free()): Call __atomic_is_lock_free
	with the type-derived _S_alignment instead of __alignof the object.
	* include/std/atomic (atomic<T>::is_lock_free()): Likewise.

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

	Implement P0318R1 unwrap_ref_decay and unwrap_reference
	* include/std/type_traits (unwrap_reference, unwrap_reference_t)
	(unwrap_ref_decay, unwrap_ref_decay_t): New traits and aliases.
	* testsuite/20_util/unwrap_reference/1.cc: New test.
	* testsuite/20_util/unwrap_reference/2.cc: New test.

	Implement P1007R3 std::assume_aligned
	* include/std/memory (assume_aligned): Implement for C++17.
	* testsuite/20_util/assume_aligned/1.cc: New test.
	* testsuite/20_util/assume_aligned/2_neg.cc: New test.
	* testsuite/20_util/assume_aligned/3.cc: New test.

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

	PR libstdc++/87787
	* include/bits/stl_uninitialized.h (__relocate_a_1): Do not call
	memmove when there's nothing to copy (and pointers could be null).

2018-11-07  Hafiz Abid Qadeer  <abidh@codesourcery.com>

	* configure: Regenerated.

2018-11-07  Jonathan Wakely  <jwakely@redhat.com>

	* config/abi/pre/gnu.ver: Fix patterns for size_t parameters.

2018-11-06  Jonathan Wakely  <jwakely@redhat.com>

	Implement std::pmr::unsynchronized_pool_resource
	* config/abi/pre/gnu.ver: Add new symbols.
	* include/std/memory_resource (std::pmr::__pool_resource): New class.
	(std::pmr::unsynchronized_pool_resource): New class.
	* src/c++17/Makefile.am: Add -fimplicit-templates to flags for
	memory_resource.cc
	* src/c++17/Makefile.in: Regenerate.
	* src/c++17/memory_resource.cc (bitset, chunk, big_block): New
	internal classes.
	(__pool_resource::_Pool): Define new class.
	(munge_options, pool_index, select_num_pools): New internal functions.
	(__pool_resource::__pool_resource, __pool_resource::~__pool_resource)
	(__pool_resource::allocate, __pool_resource::deallocate)
	(__pool_resource::_M_alloc_pools): Define member functions.
	(unsynchronized_pool_resource::unsynchronized_pool_resource)
	(unsynchronized_pool_resource::~unsynchronized_pool_resource)
	(unsynchronized_pool_resource::release)
	(unsynchronized_pool_resource::_M_find_pool)
	(unsynchronized_pool_resource::do_allocate)
	(unsynchronized_pool_resource::do_deallocate): Define member
	functions.
	* testsuite/20_util/unsynchronized_pool_resource/allocate.cc: New
	test.
	* testsuite/20_util/unsynchronized_pool_resource/is_equal.cc: New
	test.
	* testsuite/20_util/unsynchronized_pool_resource/options.cc: New
	test.
	* testsuite/20_util/unsynchronized_pool_resource/release.cc: New
	test.

2018-11-06  John Bytheway  <jbytheway@gmail.com>

	PR libstdc++/87872
	* include/debug/safe_sequence.tcc
	(_Safe_sequence<>::_M_transfer_from_if): Skip transfer to self.

2018-10-31  Joseph Myers  <joseph@codesourcery.com>

	PR bootstrap/82856
	* Makefile.am: Include multilib.am.
	* configure.ac: Remove AC_PREREQ.
	* Makefile.in, aclocal.m4, configure, doc/Makefile.in,
	include/Makefile.in, libsupc++/Makefile.in, po/Makefile.in,
	python/Makefile.in, src/Makefile.in, src/c++11/Makefile.in,
	src/c++17/Makefile.in, src/c++98/Makefile.in,
	src/filesystem/Makefile.in, testsuite/Makefile.in: Regenerate.

2018-10-31  Jonathan Wakely  <jwakely@redhat.com>

	* testsuite/20_util/pair/87822.cc: Test deeper nesting.

	PR libstdc++/87822
	* include/bits/stl_pair.h (__pair_base): Change to class template.
	(pair): Make base class type depend on template parameters.
	* testsuite/20_util/pair/87822.cc: New test.

2018-10-30  Marek Polacek  <polacek@redhat.com>

	Implement P0892R2, explicit(bool).
	* testsuite/20_util/any/cons/explicit.cc: Adjust dg-error.
	* testsuite/20_util/pair/cons/explicit_construct.cc: Likewise.
	* testsuite/20_util/tuple/cons/explicit_construct.cc: Likewise.

2018-10-30  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/87809
	* include/bits/forward_list.h (_Fwd_list_impl::_Fwd_list_impl()): Use
	trait in exception-specification instead of possibly invalid
	expression.
	* include/bits/stl_bvector.h (_Bvector_impl::_Bvector_impl()):
	Likewise.
	* include/bits/stl_list.h (_List_impl::_List_impl()): Likewise.
	* include/bits/stl_vector.h (_Vector_impl::_Vector_impl()): Likewise.
	* testsuite/23_containers/forward_list/cons/87809.cc: New test.
	* testsuite/23_containers/list/cons/87809.cc: New test.
	* testsuite/23_containers/vector/bool/cons/87809.cc: New test.
	* testsuite/23_containers/vector/cons/87809.cc: New test.

	PR libstdc++/87784
	* include/tr2/dynamic_bitset (dynamic_bitset::push_back): When there
	are no unused bits in the last block, append a new block with the
	right value so the bit doesn't need to be set. Only increment size
	after setting the new bit, not before.
	* testsuite/tr2/dynamic_bitset/pr87784.cc: New test.

2018-10-29  David Malcolm  <dmalcolm@redhat.com>

	* testsuite/17_intro/using_namespace_std_exp_neg.cc: Remove
	"expected namespace-name before" error.
	* testsuite/17_intro/using_namespace_std_tr1_neg.cc: Likewise.

2018-10-28  François Dumont  <fdumont@gcc.gnu.org>

	* testsuite/23_containers/deque/48101_neg.cc: Remove dg-prune-output
	'std' from regex pattern for versioned namespace compatibility.
	* testsuite/23_containers/vector/48101_neg.cc: Likewise.
	* testsuite/27_io/filesystem/path/io/dr2989.cc: Likewise.

2018-10-25  Jonathan Wakely  <jwakely@redhat.com>

	PR libstdc++/87749
	* include/bits/basic_string.h [_GLIBCXX_USE_CXX11_ABI]
	(basic_string::operator=(basic_string&&)): For short strings copy the
	buffer inline. Only fall back to using assign(const basic_string&) to
	do a deep copy when reallocation is needed.
	* testsuite/21_strings/basic_string/modifiers/assign/char/87749.cc:
	New test.
	* testsuite/21_strings/basic_string/modifiers/assign/char/
	move_assign_optim.cc: New test.
	* testsuite/21_strings/basic_string/modifiers/assign/wchar_t/87749.cc:
	New test.
	* testsuite/21_strings/basic_string/modifiers/assign/wchar_t/
	move_assign_optim.cc: New test.

2018-10-25  Marc Glisse  <marc.glisse@inria.fr>

	PR libstdc++/87106
	* include/bits/alloc_traits.h (_S_construct, _S_destroy, construct,
	destroy): Add noexcept specification.
	* include/bits/allocator.h (construct, destroy): Likewise.
	* include/ext/alloc_traits.h (construct, destroy): Likewise.
	* include/ext/malloc_allocator.h (construct, destroy): Likewise.
	* include/ext/new_allocator.h (construct, destroy): Likewise.
	* include/bits/stl_uninitialized.h (__relocate_object_a, __relocate_a,
	__relocate_a_1): New functions.
	(__is_trivially_relocatable): New class.
	* include/bits/stl_vector.h (__use_relocate): New static member.
	* include/bits/vector.tcc (reserve, _M_realloc_insert,
	_M_default_append): Use __relocate_a.
	(reserve, _M_assign_aux, _M_realloc_insert, _M_fill_insert,
	_M_default_append, _M_range_insert): Move _GLIBCXX_ASAN_ANNOTATE_REINIT
	after _Destroy.
	* testsuite/23_containers/vector/modifiers/push_back/49836.cc:
	Replace CopyConsOnlyType with DelAnyAssign.

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

	* include/debug/safe_unordered_container.h
	(_Safe_unordered_container<>::_M_invalidate_locals): Take lambda
	parameter type from local end variable.
	(_Safe_unordered_container<>::_M_invalidate_all): Likewise.
	* include/debug/unordered_map
	(unordered_map<>::begin()): Use C++11 direct initialization.
	(unordered_map<>::end()): Likewise.
	(unordered_map<>::cbegin()): Likewise.
	(unordered_map<>::cend()): Likewise.
	(unordered_map<>::begin(size_type)): Likewise.
	(unordered_map<>::end(size_type)): Likewise.
	(unordered_map<>::cbegin(size_type)): Likewise.
	(unordered_map<>::cend(size_type)): Likewise.
	(unordered_map<>::emplace<>(_Args&&...)): Likewise.
	(unordered_map<>::emplace_hint<>(const_iterator, _Args&&...)): Likewise.
	(unordered_map<>::insert(const value_type&)): Likewise.
	(unordered_map<>::insert(value_type&&)): Likewise.
	(unordered_map<>::insert<>(_Pair&&)): Likewise.
	(unordered_map<>::insert(const_iterator, const value_type&)): Likewise.
	(unordered_map<>::insert(const_iterator, value_type&&)): Likewise.
	(unordered_map<>::insert<>(const_iterator, _Pair&&)): Likewise.
	(unordered_map<>::try_emplace<>(const key_type&, _Args&&...)): Likewise.
	(unordered_map<>::try_emplace<>(key_type&&, _Args&&...)): Likewise.
	(unordered_map<>::try_emplace<>(const_iterator, const key_type&,
	_Args&&...)): Likewise.
	(unordered_map<>::try_emplace<>(const_iterator, key_type&&,
	_Args&&...)): Likewise.
	(unordered_map<>::insert_or_assign<>(const key_type&, _Obj&&)): Likewise.
	(unordered_map<>::insert_or_assign<>(key_type&&, _Obj&&)): Likewise.
	(unordered_map<>::insert_or_assign<>(const_iterator, const key_type&,
	_Obj&&)): Likewise.
	(unordered_map<>::insert_or_assign<>(const_iterator, key_type&&,
	_Obj&&)): Likewise.
	(unordered_map<>::insert(note_type&&)): Likewise.
	(unordered_map<>::find(const key_type&)): Likewise.
	(unordered_map<>::equal_range(const key_type&)): Likewise.
	(unordered_map<>::_M_extract): New.
	(unordered_map<>::extract(const_iterator)): Use latter.
	(unordered_map<>::extract(const key_type&)): Likewise.
	(unordered_map<>::_M_erase): New.
	(unordered_map<>::erase(const key_type&)): Use latter.
	(unordered_map<>::erase(const_iterator)): Likewise.
	(unordered_map<>::erase(iterator)): Likewise.
	(unordered_map<>::_M_invalidate): New.
	(unordered_map<>::erase(const_iterator, const_iterator)): Use latter.
	(unordered_multimap<>::begin()): Use C++11 direct initialization.
	(unordered_multimap<>::end()): Likewise.
	(unordered_multimap<>::cbegin()): Likewise.
	(unordered_multimap<>::cend()): Likewise.
	(unordered_multimap<>::begin(size_type)): Likewise.
	(unordered_multimap<>::end(size_type)): Likewise.
	(unordered_multimap<>::cbegin(size_type)): Likewise.
	(unordered_multimap<>::cend(size_type)): Likewise.
	(unordered_multimap<>::emplace<>(_Args&&...)): Likewise.
	(unordered_multimap<>::emplace_hint<>(const_iterator, _Args&&...)): Likewise.
	(unordered_multimap<>::insert(const value_type&)): Likewise.
	(unordered_multimap<>::insert(const_iterator, const value_type&)): Likewise.
	(unordered_multimap<>::insert(const_iterator, value_type&&)): Likewise.
	(unordered_multimap<>::insert<>(_Pair&&)): Likewise.
	(unordered_multimap<>::insert<>(const_iterator, _Pair&&)): Likewise.
	(unordered_multimap<>::insert(note_type&&)): Likewise.
	(unordered_multimap<>::insert(const_iterator, note_type&&)): Likewise.
	(unordered_multimap<>::find(const key_type&)): Likewise.
	(unordered_multimap<>::equal_range(const key_type&)): Likewise.
	(unordered_multimap<>::_M_extract): New.
	(unordered_multimap<>::extract(const_iterator)): Use latter.
	(unordered_multimap<>::extract(const key_type&)): Likewise.
	(unordered_multimap<>::_M_erase): New.
	(unordered_multimap<>::erase(const_iterator)): Likewise.
	(unordered_multimap<>::erase(iterator)): Likewise.
	(unordered_multimap<>::_M_invalidate): New.
	(unordered_multimap<>::erase(const key_type&)): Use latter.
	(unordered_multimap<>::erase(const_iterator, const_iterator)): Likewise.
	* include/debug/unordered_set
	(unordered_set<>::begin()): Use C++11 direct initialization.
	(unordered_set<>::end()): Likewise.
	(unordered_set<>::cbegin()): Likewise.
	(unordered_set<>::cend()): Likewise.
	(unordered_set<>::begin(size_type)): Likewise.
	(unordered_set<>::end(size_type)): Likewise.
	(unordered_set<>::cbegin(size_type)): Likewise.
	(unordered_set<>::cend(size_type)): Likewise.
	(unordered_set<>::emplace<>(_Args&&...)): Likewise.
	(unordered_set<>::emplace_hint<>(const_iterator, _Args&&...)): Likewise.
	(unordered_set<>::insert(const value_type&)): Likewise.
	(unordered_set<>::insert(value_type&&)): Likewise.
	(unordered_set<>::insert(const_iterator, const value_type&)): Likewise.
	(unordered_set<>::insert(const_iterator, value_type&&)): Likewise.
	(unordered_set<>::insert(note_type&&)): Likewise.
	(unordered_set<>::insert(const_iterator, note_type&&)): Likewise.
	(unordered_set<>::find(const key_type&)): Likewise.
	(unordered_set<>::equal_range(const key_type&)): Likewise.
	(unordered_set<>::_M_extract): New.
	(unordered_set<>::extract(const_iterator)): Use latter.
	(unordered_set<>::extract(const key_type&)): Likewise.
	(unordered_set<>::_M_erase): New.
	(unordered_set<>::erase(const key_type&)): Use latter.
	(unordered_set<>::erase(const_iterator)): Likewise.
	(unordered_set<>::erase(iterator)): Likewise.
	(unordered_set<>::_M_invalidate): New.
	(unordered_set<>::erase(const_iterator, const_iterator)): Use latter.
	(unordered_multiset<>::begin()): Use C++11 direct initialization.
	(unordered_multiset<>::end()): Likewise.
	(unordered_multiset<>::cbegin()): Likewise.
	(unordered_multiset<>::cend()): Likewise.
	(unordered_multiset<>::begin(size_type)): Likewise.
	(unordered_multiset<>::end(size_type)): Likewise.
	(unordered_multiset<>::cbegin(size_type)): Likewise.
	(unordered_multiset<>::cend(size_type)): Likewise.
	(unordered_multiset<>::emplace<>(_Args&&...)): Likewise.
	(unordered_multiset<>::emplace_hint<>(const_iterator, _Args&&...)): Likewise.
	(unordered_multiset<>::insert(const value_type&)): Likewise.
	(unordered_multiset<>::insert(const_iterator, const value_type&)): Likewise.
	(unordered_multiset<>::insert(value_type&&)): Likewise.
	(unordered_multiset<>::insert(const_iterator, value_type&&)): Likewise.
	(unordered_multiset<>::insert(node_type&&)): Likewise.
	(unordered_multiset<>::insert(const_iterator, node_type&&)): Likewise.
	(unordered_multiset<>::find(const key_type&)): Likewise.
	(unordered_multiset<>::equal_range(const key_type&)): Likewise.
	(unordered_multiset<>::_M_extract): New.
	(unordered_multiset<>::extract(const_iterator)): Use latter.
	(unordered_multiset<>::extract(const key_type&)): Likewise.
	(unordered_multiset<>::_M_erase): New.
	(unordered_multiset<>::erase(const_iterator)): Likewise.
	(unordered_multiset<>::erase(iterator)): Likewise.
	(unordered_multiset<>::_M_invalidate): New.
	(unordered_multiset<>::erase(const key_type&)): Use latter.
	(unordered_multiset<>::erase(const_iterator, const_iterator)): Likewise.

	* 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.

Copyright (C) 2018 Free Software Foundation, Inc.

Copying and distribution of this file, with or without modification,
are permitted in any medium without royalty provided the copyright
notice and this notice are preserved.