libstdc++-v3/ChangeLog

   1 2019-10-30  Jonathan Wakely  <jwakely@redhat.com>
   2
   3         PR libstdc++/92272
   4         * include/bits/stl_bvector.h (_Bit_iterator::pointer)
   5         (_Bit_const_iterator::pointer): Define as void for C++20.
   6         * include/bits/stl_iterator.h (reverse_iterator::operator->()): Add
   7         constraints for C++20.
   8         (__normal_iterator::iterator_concept): Define for C++20.
   9         * include/bits/streambuf_iterator.h (istreambuf_iterator::pointer):
  10         Define as void for C++20.
  11         (ostreambuf_iterator::difference_type): Define as ptrdiff_t for C++20.
  12         (ostreambuf_iterator::ostreambuf_iterator()): Add default constructor
  13         for C++20.
  14         * testsuite/23_containers/vector/bool/iterator_c++20.cc: New test.
  15         * testsuite/24_iterators/bidirectional/concept.cc: New test.
  16         * testsuite/24_iterators/bidirectional/tag.cc: New test.
  17         * testsuite/24_iterators/contiguous/concept.cc: New test.
  18         * testsuite/24_iterators/contiguous/tag.cc: New test.
  19         * testsuite/24_iterators/forward/concept.cc: New test.
  20         * testsuite/24_iterators/forward/tag.cc: New test.
  21         * testsuite/24_iterators/input/concept.cc: New test.
  22         * testsuite/24_iterators/input/tag.cc: New test.
  23         * testsuite/24_iterators/istreambuf_iterator/requirements/typedefs.cc:
  24         New test.
  25         * testsuite/24_iterators/ostreambuf_iterator/requirements/typedefs.cc:
  26         New test.
  27         * testsuite/24_iterators/output/concept.cc: New test.
  28         * testsuite/24_iterators/output/tag.cc: New test.
  29         * testsuite/24_iterators/random_access/concept.cc: New test.
  30         * testsuite/24_iterators/random_access/tag.cc: New test.
  31         * testsuite/24_iterators/range_operations/advance_debug_neg.cc: New
  32         test.
  33         * testsuite/24_iterators/random_access_iterator/26020.cc: Move to ...
  34         * testsuite/24_iterators/operations/26020.cc: ... here.
  35         * testsuite/24_iterators/random_access_iterator/
  36         string_vector_iterators.cc: Move to ...
  37         * testsuite/24_iterators/random_access/string_vector_iterators.cc: ...
  38         here.
  39
  40         * testsuite/util/testsuite_iterators.h: Fix typo in __cplusplus check.
  41
  42 2019-10-29  Jonathan Wakely  <jwakely@redhat.com>
  43
  44         * include/bits/range_access.h (ranges::disable_sized_range)
  45         (ranges::begin, ranges::end, ranges::cbegin, ranges::cend)
  46         (ranges::rbegin, ranges::rend, ranges::crbegin, ranges::crend)
  47         (ranges::size, ranges::empty, ranges::data, ranges::cdata)
  48         (ranges::range, ranges::sized_range, ranges::advance, ranges::distance)
  49         (ranges::next, ranges::prev): Guard with __cpp_lib_concepts.
  50         * include/bits/stl_iterator.h (disable_sized_sentinel): Likewise.
  51
  52         * include/bits/alloc_traits.h (__cpp_lib_constexpr_dynamic_alloc):
  53         Define.
  54         (allocator_traits::_S_construct, allocator_traits::_S_destroy)
  55         (__alloc_on_copy, __alloc_on_move, __alloc_on_swap): Use
  56         _GLIBCXX14_CONSTEXPR instead of constexpr.
  57         * include/bits/stl_construct.h (_Destroy): Likewise.
  58
  59         * include/Makefile.am: Add new header.
  60         * include/Makefile.in: Regenerate.
  61         * include/bits/iterator_concepts.h: New header.
  62         (contiguous_iterator_tag, iter_reference_t, ranges::iter_move)
  63         (iter_rvalue_reference_t, incrementable_traits, iter_difference_t)
  64         (readable_traits, iter_value_t, readable, iter_common_reference_t)
  65         (writable, waekly_incrementable, incrementable)
  66         (input_or_output_iterator, sentinel_for, disable_sized_sentinel)
  67         (sized_sentinel_for, input_iterator, output_iterator)
  68         (forward_iterator, bidirectional_iterator, random_access_iterator)
  69         (contiguous_iterator, indirectly_unary_invocable)
  70         (indirectly_regular_unary_invocable, indirect_unary_predicate)
  71         (indirect_relation, indirect_strict_weak_order, indirect_result_t)
  72         (projected, indirectly_movable, indirectly_movable_storable)
  73         (indirectly_copyable, indirectly_copyable_storable, ranges::iter_swap)
  74         (indirectly_swappable, indirectly_comparable, permutable, mergeable)
  75         (sortable, unreachable_sentinel_t, unreachable_sentinel)
  76         (default_sentinel_t, default_sentinel): Define.
  77         (__detail::__cpp17_iterator, __detail::__cpp17_input_iterator)
  78         (__detail::__cpp17_fwd_iterator, __detail::__cpp17_bidi_iterator)
  79         (__detail::__cpp17_randacc_iterator): Define.
  80         (__iterator_traits): Define constrained specializations.
  81         * include/bits/move.h (move): Only use old concept check for C++98.
  82         * include/bits/range_access.h (ranges::disable_sized_range)
  83         (ranges::begin, ranges::end, ranges::cbegin, ranges::cend)
  84         (ranges::rbegin, ranges::rend, ranges::crbegin, ranges::crend)
  85         (ranges::size, ranges::empty, ranges::data, ranges::cdata): Define
  86         new customization points for C++20.
  87         (ranges::range, ranges::sized_range): Define new concepts for C++20.
  88         (ranges::advance, ranges::distance, ranges::next, ranges::prev):
  89         Define new functions for C++20.
  90         (__adl_end, __adl_cdata, __adl_cbegin, __adl_cend, __adl_rbegin)
  91         (__adl_rend, __adl_crbegin, __adl_crend, __adl_cdata, __adl_size)
  92         (__adl_empty): Remove.
  93         * include/bits/stl_iterator.h (disable_sized_sentinel): Specialize
  94         for reverse_iterator.
  95         * include/bits/stl_iterator_base_types.h (contiguous_iterator_tag):
  96         Define new struct for C++20.
  97         (iterator_traits<_Tp*>): Constrain partial specialization in C++20.
  98         * include/std/concepts (__is_class_or_enum): Move to __detail
  99         namespace.
 100         * testsuite/20_util/forward/c_neg.cc: Adjust dg-error line number.
 101         * testsuite/20_util/forward/f_neg.cc: Likewise.
 102         * testsuite/24_iterators/associated_types/incrementable.traits.cc: New
 103         test.
 104         * testsuite/24_iterators/associated_types/readable.traits.cc: New test.
 105         * testsuite/24_iterators/contiguous/concept.cc: New test.
 106         * testsuite/24_iterators/contiguous/tag.cc: New test.
 107         * testsuite/24_iterators/customization_points/iter_move.cc: New test.
 108         * testsuite/24_iterators/customization_points/iter_swap.cc: New test.
 109         * testsuite/24_iterators/headers/iterator/synopsis_c++20.cc: New test.
 110         * testsuite/24_iterators/range_operations/advance.cc: New test.
 111         * testsuite/24_iterators/range_operations/distance.cc: New test.
 112         * testsuite/24_iterators/range_operations/next.cc: New test.
 113         * testsuite/24_iterators/range_operations/prev.cc: New test.
 114         * testsuite/26_numerics/adjacent_difference/requirements/
 115         explicit_instantiation/2.cc: Rename types that conflict with C++20
 116         concepts.
 117         * testsuite/26_numerics/adjacent_difference/requirements/
 118         explicit_instantiation/pod.cc: Likewise.
 119         * testsuite/26_numerics/partial_sum/requirements/
 120         explicit_instantiation/2.cc: Likewise.
 121         * testsuite/26_numerics/partial_sum/requirements/
 122         explicit_instantiation/pod.cc: Likewise.
 123         * testsuite/experimental/iterator/requirements.cc: Likewise.
 124         * testsuite/std/ranges/access/begin.cc: New test.
 125         * testsuite/std/ranges/access/cbegin.cc: New test.
 126         * testsuite/std/ranges/access/cdata.cc: New test.
 127         * testsuite/std/ranges/access/cend.cc: New test.
 128         * testsuite/std/ranges/access/crbegin.cc: New test.
 129         * testsuite/std/ranges/access/crend.cc: New test.
 130         * testsuite/std/ranges/access/data.cc: New test.
 131         * testsuite/std/ranges/access/empty.cc: New test.
 132         * testsuite/std/ranges/access/end.cc: New test.
 133         * testsuite/std/ranges/access/rbegin.cc: New test.
 134         * testsuite/std/ranges/access/rend.cc: New test.
 135         * testsuite/std/ranges/access/size.cc: New test.
 136         * testsuite/util/testsuite_iterators.h (contiguous_iterator_wrapper)
 137         (test_range, test_sized_range): New test utilities.
 138
 139         * testsuite/util/testsuite_iterators.h (BoundsContainer::size()): Add
 140         new member function.
 141         (WritableObject::operator=): Constrain with enable_if when available.
 142         (remove_cv): Use std::remove_if when available.
 143         (test_container::it(int)): Use size().
 144         (test_container::size()): Use BoundsContainer::size().
 145
 146         PR libstdc++/92267
 147         * include/bits/stl_deque.h (_Deque_iterator(const _Deque_iterator&)):
 148         Do not define as defaulted.
 149         * testsuite/23_containers/deque/types/92267.cc: New test.
 150
 151 2019-10-26  Gerald Pfeifer  <gerald@pfeifer.com>
 152
 153         * doc/xml/manual/codecvt.xml: Switch pubs.opengroup.org to https.
 154         * doc/xml/manual/locale.xml (LC_ALL): Ditto.
 155         * doc/xml/manual/messages.xml: Ditto.
 156
 157 2019-10-26  John David Anglin  <danglin@gcc.gnu.org>
 158
 159         * config/abi/post/hppa-linux-gnu/baseline_symbols.txt: Update.
 160
 161 2019-10-25  Jonathan Wakely  <jwakely@redhat.com>
 162
 163         * testsuite/util/testsuite_iterators.h (output_iterator_wrapper)
 164         (input_iterator_wrapper, forward_iterator_wrapper)
 165         bidirectional_iterator_wrapper, random_access_iterator_wrapper): Remove
 166         user-provided copy constructors and copy assignment operators so they
 167         are defined implicitly.
 168         (input_iterator_wrapper): Initialize members in default constructor.
 169         (forward_iterator_wrapper): Remove assignments to members of base.
 170
 171         * include/bits/allocator.h: Check __cpp_constexpr_dynamic_alloc
 172         before making the std::allocator destructor constexpr.
 173         * testsuite/20_util/allocator/requirements/constexpr.cc: New test.
 174
 175         * include/bits/range_cmp.h: Check __cpp_lib_concepts before defining
 176         concepts. Fix comment.
 177         * include/bits/allocator.h
 178
 179 2019-10-25  Gerald Pfeifer  <gerald@pfeifer.com>
 180
 181         * doc/xml/manual/policy_data_structures_biblio.xml: Switch
 182         pubs.opengroup.org to https.
 183
 184 2019-10-25  Gerald Pfeifer  <gerald@pfeifer.com>
 185
 186         * doc/xml/gnu/gpl-3.0.xml: Switch www.gnu.org to https.
 187
 188 2019-09-09  Edward Smith-Rowland  <3dw4rd@verizon.net>
 189
 190         * doc/xml/manual/status_cxx2020.xml: Add rows and update status.
 191
 192 2019-10-24  Jonathan Wakely  <jwakely@redhat.com>
 193
 194         * include/bits/allocator.h (allocator<void>): Restore the explicit
 195         specialization for C++20, but make its API consistent with the primary
 196         template.
 197         (allocator::~allocator()): Restore the destructor for C++20, but make
 198         it constexpr.
 199         * testsuite/20_util/allocator/rebind_c++20.cc: Check allocator<void>.
 200         * testsuite/20_util/allocator/requirements/typedefs_c++20.cc: Likewise.
 201         * testsuite/20_util/allocator/void.cc: Check that constructors and
 202         destructors are trivial. Check for converting constructor in C++20.
 203         * testsuite/ext/malloc_allocator/variadic_construct.cc: Simplify
 204         dejagnu target selector.
 205         * testsuite/ext/new_allocator/variadic_construct.cc: Likewise.
 206
 207         * include/experimental/executor (__use_future_ct, use_future_t):
 208         Define partial specializations for std::allocator.
 209         (__use_future_ch): Overload constructor for completion tokens using
 210         std::allocator.
 211
 212         PR libstdc++/88338 Implement P0898R3, C++20 concepts library
 213         * doc/xml/manual/status_cxx2020.xml: Update status.
 214         * doc/html/*: Regenerate.
 215         * testsuite/std/concepts/1.cc: New test.
 216         * testsuite/std/concepts/2.cc: New test.
 217
 218         * include/bits/random.h (uniform_random_bit_generator): Define for
 219         C++20.
 220         * testsuite/26_numerics/random/concept.cc: New test.
 221         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error line.
 222
 223 2019-10-23  Jonathan Wakely  <jwakely@redhat.com>
 224
 225         * include/std/functional (invoke): Add constexpr for C++20.
 226         * include/std/version (__cpp_lib_constexpr_invoke): Define.
 227         * testsuite/20_util/function_objects/invoke/constexpr.cc: New test.
 228
 229         PR c++/91369 Implement P0784R7 changes to allocation and construction
 230         * include/bits/alloc_traits.h: Include <bits/stl_construct.h>.
 231         (allocator_traits::_S_allocate, allocator_traits::_S_construct)
 232         (allocator_traits::_S_destroy, allocator_traits::_S_max_size)
 233         (allocator_traits::_S_select, allocator_traits::allocate)
 234         (allocator_traits::deallocate, allocator_traits::construct)
 235         (allocator_traits::destroy, allocator_traits::max_size)
 236         (allocator_traits::select_on_container_copy_construction)
 237         (allocator_traits<allocator<T>>): Add constexpr specifier for C++20.
 238         (allocator_traits<allocator<T>>::construct): Use construct_at.
 239         (allocator_traits<allocator<T>>::destroy): Use destroy_at.
 240         (__alloc_on_copy, __alloc_on_move, __alloc_on_swap): Add constexpr
 241         specifier.
 242         (_Destroy(ForwardIterator, ForwardIterator, Alloc&))
 243         (_Destroy(ForwardIterator, ForwardIterator, allocator<T>&)): Move here
 244         from <bits/stl_construct.h>.
 245         * include/bits/allocator.h (allocator::~allocator): Remove for C++20.
 246         (allocator::allocate, allocate::deallocate): Define for C++20 and up.
 247         (operator==, operator!=): Add constexpr specifier for C++20.
 248         * include/bits/stl_construct.h: Don't include <ext/alloc_traits.h>.
 249         (destroy_at): For C++20 add constexpr specifier and support for
 250         destroying arrays.
 251         (construct_at): Define new function for C++20.
 252         (_Construct): Return result of placement new-expression. For C++11 and
 253         up add constexpr. For C++20 dispatch to std::construct_at during
 254         constant evaluation.
 255         (_Destroy(pointer)): Add constexpr specifier. For C++20 dispatch to
 256         std::destroy_at during constant evaluation.
 257         (_Destroy_aux::__destroy, _Destroy_n_aux::__destroy_n): Add constexpr
 258         specifier for C++20.
 259         (_Destroy(ForwardIterator, ForwardIterator))
 260         (_Destroy(ForwardIterator, Size)): Likewise. Do not elide trivial
 261         destructors during constant evaluation.
 262         (destroy, destroy_n): Add constexpr specifier for C++20.
 263         (_Destroy(ForwardIterator, ForwardIterator, Alloc&))
 264         (_Destroy(ForwardIterator, ForwardIterator, allocator<T>&)): Move to
 265         <bits/alloc_traits.h>, to remove dependency on allocators.
 266         * include/bits/stl_uninitialized.h: Include <ext/alloc_traits.h>.
 267         Include <bits/stl_pair.h> instead of <utility>.
 268         * include/ext/alloc_traits.h: Always include <bits/alloc_traits.h>.
 269         (__alloc_traits::construct, __alloc_traits::destroy)
 270         (__alloc_traits::_S_select_on_copy, __alloc_traits::_S_on_swap): Add
 271         constexpr specifier.
 272         * include/ext/malloc_allocator.h  (operator==, operator!=): Add
 273         constexpr specifier for C++20.
 274         * include/ext/new_allocator.h (operator==, operator!=): Likewise.
 275         * testsuite/20_util/headers/memory/synopsis.cc: Add constexpr.
 276         * testsuite/20_util/scoped_allocator/69293_neg.cc: Ignore additional
 277         errors due to constexpr function called after failed static_assert.
 278         * testsuite/20_util/specialized_algorithms/construct_at/1.cc: New test.
 279         * testsuite/23_containers/vector/cons/destructible_debug_neg.cc:
 280         Ignore additional errors due to constexpr function called after failed
 281         static_assert.
 282         * testsuite/23_containers/vector/cons/destructible_neg.cc: Likewise.
 283
 284         * testsuite/20_util/bind/91371.cc: Fix test to compile as C++11.
 285
 286         * include/debug/helper_functions.h (__valid_range): Change
 287         _GLIBCXX_CONSTEXPR to _GLIBCXX14_CONSTEXPR.
 288
 289         * include/ext/throw_allocator.h (throw_allocator_base): Qualify
 290         size_t and ptrdiff_t.
 291
 292         * include/ext/pb_ds/detail/bin_search_tree_/bin_search_tree_.hpp:
 293         Use detail::rebind_traits.
 294         * include/ext/pb_ds/detail/bin_search_tree_/node_iterators.hpp:
 295         Likewise.
 296         * include/ext/pb_ds/detail/bin_search_tree_/traits.hpp: Likewise.
 297         * include/ext/pb_ds/detail/binary_heap_/binary_heap_.hpp: Likewise.
 298         * include/ext/pb_ds/detail/binary_heap_/entry_cmp.hpp: Likewise.
 299         * include/ext/pb_ds/detail/binary_heap_/entry_pred.hpp: Likewise.
 300         * include/ext/pb_ds/detail/binary_heap_/point_const_iterator.hpp:
 301         Likewise.
 302         * include/ext/pb_ds/detail/binomial_heap_base_/binomial_heap_base_.hpp:
 303         Likewise.
 304         * include/ext/pb_ds/detail/branch_policy/branch_policy.hpp: Likewise.
 305         * include/ext/pb_ds/detail/cc_hash_table_map_/cc_ht_map_.hpp: Likewise.
 306         * include/ext/pb_ds/detail/cond_dealtor.hpp: Likewise.
 307         * include/ext/pb_ds/detail/eq_fn/hash_eq_fn.hpp (has_eq_fn): Likewise.
 308         * include/ext/pb_ds/detail/gp_hash_table_map_/gp_ht_map_.hpp: Likewise.
 309         * include/ext/pb_ds/detail/hash_fn/ranged_hash_fn.hpp: Likewise.
 310         * include/ext/pb_ds/detail/hash_fn/ranged_probe_fn.hpp: Likewise.
 311         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/
 312         left_child_next_sibling_heap_.hpp: Likewise.
 313         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/node.hpp:
 314         Likewise.
 315         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/
 316         point_const_iterator.hpp: Likewise.
 317         * include/ext/pb_ds/detail/list_update_map_/lu_map_.hpp: Likewise.
 318         * include/ext/pb_ds/detail/ov_tree_map_/
 319         constructors_destructor_fn_imps.hpp: Likewise.
 320         * include/ext/pb_ds/detail/ov_tree_map_/node_iterators.hpp: Likewise.
 321         * include/ext/pb_ds/detail/ov_tree_map_/ov_tree_map_.hpp: Likewise.
 322         * include/ext/pb_ds/detail/pairing_heap_/pairing_heap_.hpp: Likewise.
 323         * include/ext/pb_ds/detail/pat_trie_/pat_trie_.hpp: Likewise.
 324         * include/ext/pb_ds/detail/pat_trie_/pat_trie_base.hpp: Likewise.
 325         * include/ext/pb_ds/detail/rb_tree_map_/node.hpp: Likewise.
 326         * include/ext/pb_ds/detail/rc_binomial_heap_/rc.hpp: Likewise.
 327         * include/ext/pb_ds/detail/splay_tree_/node.hpp: Likewise.
 328         * include/ext/pb_ds/detail/thin_heap_/thin_heap_.hpp: Likewise.
 329         * include/ext/pb_ds/detail/trie_policy/sample_trie_access_traits.hpp:
 330         Likewise.
 331         * include/ext/pb_ds/detail/type_utils.hpp: Fix typo in comment.
 332         * include/ext/pb_ds/detail/types_traits.hpp (stored_value): Add
 333         bool parameter to control whether the hash value is stored.
 334         (select_base_type): New class template and partial specialization.
 335         (maybe_null_type): Likewise.
 336         (rebind_traits): New class template.
 337         (type_base): Remove four nearly identical specializations.
 338         (type_dispatch): Remove.
 339         (type_traits): Use select_base_type and maybe_null_type instead of
 340         type_base to control differences between specializations.
 341         * include/ext/pb_ds/list_update_policy.hpp: Use detail::rebind_traits.
 342         * include/ext/pb_ds/priority_queue.hpp: Likewise.
 343         * include/ext/pb_ds/tree_policy.hpp: Likewise.
 344         * include/ext/pb_ds/trie_policy.hpp: Likewise.
 345
 346         * include/backward/hash_set (hash_set): Use __alloc_traits.
 347         * include/backward/hashtable.h (_Hashtable): Likewise.
 348         * include/ext/alloc_traits.h (__alloc_traits::allocate): Add overload
 349         taking a hint.
 350         * include/ext/extptr_allocator.h (_ExtPtr_allocator::allocate): Ignore
 351         hint.
 352         * include/ext/slist (_Slist_base): Use __alloc_traits.
 353         * include/tr1/hashtable.h (_Hashtable): Likewise.
 354         * include/tr1/regex (match_results): Use vector::const_reference
 355         instead of assuming the allocator defines it.
 356         * testsuite/backward/hash_map/23528.cc: Use allocator_traits in C++11.
 357         * testsuite/tr1/6_containers/unordered_map/capacity/29134-map.cc: Use
 358         __gnu_test::max_size.
 359         * testsuite/tr1/6_containers/unordered_multimap/capacity/
 360         29134-multimap.cc: Likewise.
 361         * testsuite/tr1/6_containers/unordered_multiset/capacity/
 362         29134-multiset.cc: Likewise.
 363         * testsuite/tr1/6_containers/unordered_set/capacity/29134-set.cc:
 364         Likewise.
 365
 366 2019-10-22  Jonathan Wakely  <jwakely@redhat.com>
 367
 368         * testsuite/util/testsuite_abi.h: Restore use of tr1/unordered_map
 369         when compiled as C++98.
 370
 371         * include/bits/memoryfwd.h (uses_allocator): Do not declare for C++98.
 372         * testsuite/17_intro/names.cc: Check uses_allocator in C++98.
 373
 374         * include/bits/alloc_traits.h
 375         (allocator_traits<allocator<T>>::allocate): Ignore hint for C++20.
 376         (allocator_traits<allocator<T>>::construct): Perform placement new
 377         directly for C++20, instead of calling allocator<T>::construct.
 378         (allocator_traits<allocator<T>>::destroy): Call destructor directly
 379         for C++20, instead of calling allocator<T>::destroy.
 380         (allocator_traits<allocator<T>>::max_size): Return value directly
 381         for C++20, instead of calling std::allocator<T>::max_size().
 382         (__do_alloc_on_copy, __do_alloc_on_move, __do_alloc_on_swap): Do not
 383         define for C++17 and up.
 384         (__alloc_on_copy, __alloc_on_move, __alloc_on_swap): Use if-constexpr
 385         for C++17 and up, instead of tag dispatching.
 386         * include/bits/allocator.h (allocator<void>): Remove for C++20.
 387         (allocator::pointer, allocator::const_pointer, allocator::reference)
 388         (allocator::const_reference, allocator::rebind): Remove for C++20.
 389         * include/bits/basic_string.h (basic_string): Use __alloc_traits to
 390         rebind allocator.
 391         * include/bits/memoryfwd.h (allocator<void>): Remove for C++20.
 392         * include/ext/debug_allocator.h: Use __alloc_traits for rebinding.
 393         * include/ext/malloc_allocator.h (malloc_allocator::~malloc_allocator)
 394         (malloc_allocator::pointer, malloc_allocator::const_pointer)
 395         (malloc_allocator::reference, malloc_allocator::const_reference)
 396         (malloc_allocator::rebind, malloc_allocator::max_size)
 397         (malloc_allocator::construct, malloc_allocator::destroy): Do not
 398         define for C++20.
 399         (malloc_allocator::_M_max_size): Define new function.
 400         * include/ext/new_allocator.h (new_allocator::~new_allocator)
 401         (new_allocator::pointer, new_allocator::const_pointer)
 402         (new_allocator::reference, new_allocator::const_reference)
 403         (new_allocator::rebind, new_allocator::max_size)
 404         (new_allocator::construct, new_allocator::destroy): Do not
 405         define for C++20.
 406         (new_allocator::_M_max_size): Define new function.
 407         * include/ext/rc_string_base.h (__rc_string_base::_Rep): Use
 408         __alloc_traits to rebind allocator.
 409         * include/ext/rope (_Rope_rep_base, _Rope_base): Likewise.
 410         (rope::rope(CharT, const allocator_type&)): Use __alloc_traits
 411         to construct character.
 412         * include/ext/slist (_Slist_base): Use __alloc_traits to rebind
 413         allocator.
 414         * include/ext/sso_string_base.h (__sso_string_base::_M_max_size):
 415         Use __alloc_traits.
 416         * include/ext/throw_allocator.h (throw_allocator): Do not use optional
 417         members of std::allocator, use __alloc_traits members instead.
 418         * include/ext/vstring.h (__versa_string): Use __alloc_traits.
 419         * include/ext/vstring_util.h (__vstring_utility): Likewise.
 420         * include/std/memory: Include <bits/alloc_traits.h>.
 421         * testsuite/20_util/allocator/8230.cc: Use __gnu_test::max_size.
 422         * testsuite/20_util/allocator/rebind_c++20.cc: New test.
 423         * testsuite/20_util/allocator/requirements/typedefs.cc: Do not check
 424         for pointer, const_pointer, reference, const_reference or rebind in
 425         C++20.
 426         * testsuite/20_util/allocator/requirements/typedefs_c++20.cc: New test.
 427         * testsuite/23_containers/deque/capacity/29134.cc: Use
 428         __gnu_test::max_size.
 429         * testsuite/23_containers/forward_list/capacity/1.cc: Likewise.
 430         * testsuite/23_containers/list/capacity/29134.cc: Likewise.
 431         * testsuite/23_containers/map/capacity/29134.cc: Likewise.
 432         * testsuite/23_containers/multimap/capacity/29134.cc: Likewise.
 433         * testsuite/23_containers/multiset/capacity/29134.cc: Likewise.
 434         * testsuite/23_containers/set/capacity/29134.cc: Likewise.
 435         * testsuite/23_containers/vector/capacity/29134.cc: Likewise.
 436         * testsuite/ext/malloc_allocator/variadic_construct.cc: Do not run
 437         test for C++20.
 438         * testsuite/ext/new_allocator/variadic_construct.cc: Likewise.
 439         * testsuite/ext/vstring/capacity/29134.cc: Use __gnu_test::max_size.
 440         * testsuite/util/replacement_memory_operators.h: Do not assume
 441         Alloc::pointer exists.
 442         * testsuite/util/testsuite_allocator.h (__gnu_test::max_size): Define
 443         helper to call max_size for any allocator.
 444
 445 2019-10-22  Andreas Schwab  <schwab@suse.de>
 446
 447         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
 448
 449 2019-10-18  Jonathan Wakely  <jwakely@redhat.com>
 450
 451         PR libstdc++/92143
 452         * libsupc++/new_opa.cc (operator new) [__APPLE__]: Increase alignment
 453         to at least sizeof(void*).
 454
 455         * include/bits/range_cmp.h (ranges::less::operator()): Inline the
 456         logic from std::less::operator() to remove the dependency on it.
 457
 458 2019-10-17  Jonathan Wakely  <jwakely@redhat.com>
 459
 460         * doc/doxygen/user.cfg.in (INPUT): Add new C++17 and C++20 headers.
 461
 462         * include/Makefile.am: Add new header.
 463         * include/Makefile.in: Regenerate.
 464         * include/bits/range_cmp.h: New header for C++20 function objects.
 465         * include/std/functional: Include new header.
 466         * testsuite/20_util/function_objects/identity/1.cc: New test.
 467         * testsuite/20_util/function_objects/range.cmp/equal_to.cc: New test.
 468         * testsuite/20_util/function_objects/range.cmp/greater.cc: New test.
 469         * testsuite/20_util/function_objects/range.cmp/greater_equal.cc: New
 470         test.
 471         * testsuite/20_util/function_objects/range.cmp/less.cc: New test.
 472         * testsuite/20_util/function_objects/range.cmp/less_equal.cc: New test.
 473         * testsuite/20_util/function_objects/range.cmp/not_equal_to.cc: New
 474         test.
 475
 476         PR libstdc++/92124
 477         * include/bits/forward_list.h
 478         (_M_move_assign(forward_list&&, false_type)): Do not use
 479         __make_move_if_noexcept, instead move unconditionally.
 480         * include/bits/stl_deque.h (_M_move_assign2(deque&&, false_type)):
 481         Likewise.
 482         * include/bits/stl_list.h (_M_move_assign(list&&, false_type)):
 483         Likewise.
 484         * include/bits/stl_vector.h (_M_move_assign(vector&&, false_type)):
 485         Likewise.
 486         * testsuite/23_containers/vector/92124.cc: New test.
 487
 488 2019-10-16  Jonathan Wakely  <jwakely@redhat.com>
 489
 490         * include/bits/c++config (_GLIBCXX_BUILTIN_IS_SAME_AS): Define to
 491         one of __is_same_as or __is_same when available.
 492         * include/std/concepts (__detail::__same_as): Use std::is_same_v.
 493         * include/std/type_traits (is_same) [_GLIBCXX_BUILTIN_IS_SAME_AS]:
 494         Use new macro instead of __is_same_as.
 495         (is_same) [!_GLIBCXX_BUILTIN_IS_SAME_AS]: Restore partial
 496         specialization.
 497         (is_same_v) [_GLIBCXX_BUILTIN_IS_SAME_AS]: Use new macro.
 498         (is_same_v) [!_GLIBCXX_BUILTIN_IS_SAME_AS]: Use std::is_same.
 499
 500 2019-10-16  François Dumont  <fdumont@gcc.gnu.org>
 501
 502         * src/c++11/debug.cc (print_field): Replace constness_names <unknown>
 503         entry with <unknown constness>. Replace state_names <unknown> entry with
 504         <unknown state>.
 505
 506 2019-10-11  Jonathan Wakely  <jwakely@redhat.com>
 507
 508         * include/Makefile.am: Add new header.
 509         * include/Makefile.in: Regenerate.
 510         * include/precompiled/stdc++.h: Include <concepts>.
 511         * include/std/concepts: New header for C++20.
 512         * include/std/version (__cpp_lib_concepts): Define.
 513         * scripts/create_testsuite_files: Look for test files in new std
 514         directory.
 515         * testsuite/libstdc++-dg/conformance.exp: Likewise.
 516         * testsuite/std/concepts/concepts.callable/invocable.cc: New test.
 517         * testsuite/std/concepts/concepts.callable/regular_invocable.cc: New
 518         test.
 519         * testsuite/std/concepts/concepts.callable/relation.cc: New test.
 520         * testsuite/std/concepts/concepts.callable/strictweakorder.cc: New
 521         test.
 522         * testsuite/std/concepts/concepts.lang/concept.arithmetic/
 523         floating_point.cc: New test.
 524         * testsuite/std/concepts/concepts.lang/concept.arithmetic/integral.cc:
 525         New test.
 526         * testsuite/std/concepts/concepts.lang/concept.arithmetic/
 527         signed_integral.cc: New test.
 528         * testsuite/std/concepts/concepts.lang/concept.arithmetic/
 529         unsigned_integral.cc: New test.
 530         * testsuite/std/concepts/concepts.lang/concept.assignable/1.cc: New
 531         test.
 532         * testsuite/std/concepts/concepts.lang/concept.common/1.cc: New test.
 533         * testsuite/std/concepts/concepts.lang/concept.commonref/1.cc: New
 534         test.
 535         * testsuite/std/concepts/concepts.lang/concept.constructible/1.cc:
 536         New test.
 537         * testsuite/std/concepts/concepts.lang/concept.convertible/1.cc:
 538         New test.
 539         * testsuite/std/concepts/concepts.lang/concept.copyconstructible/1.cc:
 540         New test.
 541         * testsuite/std/concepts/concepts.lang/concept.defaultconstructible/
 542         1.cc: New test.
 543         * testsuite/std/concepts/concepts.lang/concept.derived/1.cc:
 544         New test.
 545         * testsuite/std/concepts/concepts.lang/concept.destructible/1.cc:
 546         New test.
 547         * testsuite/std/concepts/concepts.lang/concept.moveconstructible/1.cc:
 548         New test.
 549         * testsuite/std/concepts/concepts.lang/concept.same/1.cc:
 550         New test.
 551         * testsuite/std/concepts/concepts.lang/concept.swappable/swap.cc:
 552         New test.
 553         * testsuite/std/concepts/concepts.lang/concept.swappable/swappable.cc:
 554         New test.
 555         * testsuite/std/concepts/concepts.lang/concept.swappable/
 556         swappable_with.cc: New test.
 557         * testsuite/std/concepts/concepts.object/copyable.cc: New test.
 558         * testsuite/std/concepts/concepts.object/movable.cc: New test.
 559         * testsuite/std/concepts/concepts.object/regular.cc: New test.
 560         * testsuite/std/concepts/concepts.object/semiregular.cc: New test.
 561
 562         * include/std/type_traits (is_same): Replace partial specialization
 563         by using __is_same_as built-in in primary template.
 564         (is_same_v): Use __is_same_as built-in instead of instantiating the
 565         is_same trait.
 566
 567         PR libstdc++/92059
 568         * include/tr2/dynamic_bitset (__dynamic_bitset_base): Define all
 569         special member functions as defaulted. Add noexcept to most members.
 570         (__dynamic_bitset_base(size_t, unsigned long long, const _Alloc&)):
 571         Mask off unwanted bits in the __val parameter. Avoid undefined left
 572         shifts.
 573         (__dynamic_bitset_base::_M_assign): Remove.
 574         (__dynamic_bitset_base::_M_do_reset): Use std::fill.
 575         (__dynamic_bitset_base::_M_are_all_aux): Avoid integer promotion when
 576         block_type has lower rank than int.
 577         (dynamic_bitset): Add noexcept to most members. Use injected-class-name
 578         in return types and parameter types.
 579         (dynamic_bitset::_M_Nb): Add default member initializer.
 580         (dynamic_bitset(), dynamic_bitset(const dynamic_bitset&)): Define as
 581         defaulted.
 582         (dynamic_bitset(dynamic_bitset&&)): Clear source object after move.
 583         (dynamic_bitset::operator=(const dynamic_bitset&)): Define as
 584         defaulted.
 585         (dynamic_bitset::operator=(dynamic_bitset&&)): Add noexcept-specifier.
 586         Define without using swap, to propagate allocator correctly.
 587         (dynamic_bitset(const char*, const _Alloc&)): Use strlen.
 588         (dynamic_bitset::_M_do_sanitize, dynamic_bitset::_M_do_fill): Use
 589         casts to avoid unwanted integer promotions.
 590         (dynamic_bitset::_M_copy_from_ptr): Rearrange template parameters and
 591         add default template arguments and default argument to simplify usage.
 592         (dynamic_bitset::_M_copy_from_string): Adjust call to _M_copy_from_ptr.
 593         (operator==(const dynamic_bitset&, const dynamic_bitset&))
 594         (operator<(const dynamic_bitset&, const dynamic_bitset&)): Use _M_Nb.
 595         * include/tr2/dynamic_bitset.tcc (dynamic_bitset::_M_copy_from_ptr):
 596         Adjust template parameters to match declaration.
 597         * testsuite/tr2/dynamic_bitset/cmp.cc: New test.
 598         * testsuite/tr2/dynamic_bitset/cons.cc: New test.
 599         * testsuite/tr2/dynamic_bitset/copy.cc: New test.
 600         * testsuite/tr2/dynamic_bitset/move.cc: New test.
 601         * testsuite/tr2/dynamic_bitset/pr92059.cc: New test.
 602
 603         * include/bits/charconv.h (__to_chars_len): Avoid -Wsign-compare
 604         warnings.
 605
 606 2019-10-10  Jonathan Wakely  <jwakely@redhat.com>
 607
 608         PR libstdc++/91057
 609         * src/c++98/locale.cc [_GLIBCXX_LONG_DOUBLE_COMPAT]
 610         (find_ldbl_sync_facet): Fix parameter type and missing return.
 611
 612 2019-10-09  Marek Polacek  <polacek@redhat.com>
 613
 614         PR c++/91364 - P0388R4: Permit conversions to arrays of unknown bound.
 615         PR c++/69531 - DR 1307: Differently bounded array parameters.
 616         PR c++/88128 - DR 330: Qual convs and pointers to arrays of pointers.
 617         * testsuite/23_containers/span/lwg3255.cc: Adjust test to match the
 618         post-P0388R4 behavior.
 619
 620 2019-10-09  Jonathan Wakely  <jwakely@redhat.com>
 621
 622         PR libstdc++/91057
 623         * src/c++98/locale.cc (locale::id::_M_id()) [__GTHREADS]: Use atomic
 624         compare-exchange or double-checked lock to ensure only one thread sets
 625         the _M_index variable.
 626         [_GLIBCXX_LONG_DOUBLE_COMPAT]: Call find_ldbl_sync_facet to detect
 627         facets that share another facet's ID.
 628         [_GLIBCXX_LONG_DOUBLE_COMPAT] (find_ldbl_sync_facet): New function.
 629
 630         PR libstdc++/78552
 631         * src/c++98/locale_init.cc (locale::classic()): Do not construct a new
 632         locale object for every call.
 633         (locale::_S_initialize_once()): Construct C locale here.
 634
 635 2019-10-08  Jonathan Wakely  <jwakely@redhat.com>
 636
 637         * doc/Makefile.am (doc-html-docbook-regenerate): New target.
 638         (${docbook_outdir}/html): Do not create unused 'html/ext' directory.
 639         * doc/Makefile.in: Regenerate.
 640         * doc/xml/manual/documentation_hacking.xml: Document new target.
 641         * doc/html/*: Regenerate.
 642
 643         * doc/xml/manual/allocator.xml: Use archived copy of CUJ article.
 644         * doc/html/*: Regenerate.
 645
 646 2019-10-06  François Dumont  <fdumont@gcc.gnu.org>
 647
 648         * include/bits/stl_algo.h
 649         (__copy_n_a(_IIte, _Size, _OIte)): New.
 650         (__copy_n_a(istreambuf_iterator<>, _Size, _CharT*)): New declaration.
 651         (__copy_n(_IIte, _Size, _OIte, input_iterator_tag)): Adapt to use
 652         latter.
 653         * include/bits/streambuf_iterator.h (istreambuf_iterator<>): Declare
 654         std::__copy_n_a friend.
 655         (__copy_n_a(istreambuf_iterator<>, _Size, _CharT*)): New.
 656         * testsuite/25_algorithms/copy_n/istreambuf_iterator/1.cc: New.
 657         * testsuite/25_algorithms/copy_n/istreambuf_iterator/1_neg.cc: New.
 658         * testsuite/25_algorithms/copy_n/istreambuf_iterator/2_neg.cc: New.
 659
 660         * include/bits/stl_iterator_base_types.h (__iterator_category_t): Define
 661         for C++11.
 662         (_RequireInputIte): Likewise and use __enable_if_t.
 663         * include/std/numeric
 664         (__is_random_access_iter): Use __iterator_category_t.
 665
 666         * include/bits/stl_algo.h (copy_n): Add __glibcxx_requires_can_increment
 667         debug checks.
 668         * testsuite/25_algorithms/copy_n/debug/1_neg.cc: New.
 669         * testsuite/25_algorithms/copy_n/debug/2_neg.cc: New.
 670
 671 2019-10-04  François Dumont  <fdumont@gcc.gnu.org>
 672
 673         * include/debug/forward_list
 674         (_Sequence_traits<__debug::forward_list<>>::_S_size): Returns __dp_sign
 675         distance when not empty.
 676         * include/debug/list (_Sequence_traits<__debug::list<>>::_S_size):
 677         Likewise.
 678         * include/debug/helper_functions.h (__dp_sign_max_size): New
 679         _Distance_precision enum entry.
 680         (__valid_range_aux(_IIte, _IIte, _Distance_traits<>::__type,
 681         __false_type)): Adapt.
 682         * include/debug/safe_iterator.tcc
 683         (_Safe_iterator<>::_M_get_distance_to(const _Safe_iterator&)): Review
 684         distance computation.
 685
 686 2019-10-04  Jonathan Wakely  <jwakely@redhat.com>
 687
 688         PR libstdc++/81091
 689         PR libstdc++/91947
 690         * configure.ac: Use AC_SYS_LARGEFILE to enable 64-bit file APIs.
 691         * config.h.in: Regenerate:
 692         * configure: Regenerate:
 693         * include/Makefile.am (${host_builddir}/largefile-config.h): New
 694         target to generate config header for filesystem library.
 695         (${host_builddir}/c++config.h): Rename macros for large file support.
 696         * include/Makefile.in: Regenerate.
 697         * src/c++17/fs_dir.cc: Include new config header.
 698         * src/c++17/fs_ops.cc: Likewise.
 699         (filesystem::file_size): Use uintmax_t for size.
 700         * src/filesystem/dir.cc: Include new config header.
 701         * src/filesystem/ops.cc: Likewise.
 702         (experimental::filesystem::file_size): Use uintmax_t for size.
 703
 704         * testsuite/util/testsuite_abi.h: Use std::unordered_map instead of
 705         std::tr1::unordered_map.
 706         * testsuite/util/testsuite_allocator.h: Likewise.
 707
 708         * include/tr1/hashtable.h: Add header for __gnu_cxx::__alloc_traits.
 709
 710         * include/tr1/hashtable.h (tr1::_Hashtable::_M_allocate_node): Use
 711         __gnu_cxx::__alloc_traits for allocator construct function.
 712         (tr1::_Hashtable::_M_deallocate_node): Likewise for destroy function.
 713
 714         * include/precompiled/stdc++.h: Include <span> for C++20.
 715         * testsuite/17_intro/names.cc: Do not define 'e' for C++20.
 716
 717 2019-10-03  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 718
 719         * include/parallel/multiway_merge.h (_RAIter3): Replace _C by _Cp.
 720
 721 2019-10-02  Jonathan Wakely  <jwakely@redhat.com>
 722
 723         * config/abi/pre/gnu.ver: Tighten up greedy wildcards.
 724
 725         * doc/xml/manual/parallel_mode.xml: Add caveat about support for
 726         recent standards.
 727         * doc/html/*: Regenerate.
 728
 729 2019-10-01  Jonathan Wakely  <jwakely@redhat.com>
 730
 731         * include/experimental/algorithm (experimental::sample): Qualify call
 732         to __sample correctly.
 733         * include/parallel/algo.h (sample, for_each_n): Add using-declarations
 734         for algorithms that don't have parallel implementations.
 735
 736         * include/parallel/algobase.h (equal, lexicographical_compare): Add
 737         _GLIBCXX20_CONSTEXPR and dispatch to sequential algorithm when being
 738         constant evaluated.
 739         * include/parallel/algorithmfwd.h (equal, lexicographical_compare):
 740         Add _GLIBCXX20_CONSTEXPR.
 741
 742         * testsuite/17_intro/using_namespace_std_tr1_neg.cc: Skip test for
 743         parallel mode.
 744         * testsuite/20_util/hash/84998.cc: Likewise.
 745         * testsuite/23_containers/deque/types/pmr_typedefs_debug.cc: Likewise.
 746         * testsuite/23_containers/forward_list/pmr_typedefs_debug.cc: Likewise.
 747         * testsuite/23_containers/list/pmr_typedefs_debug.cc: Likewise.
 748         * testsuite/23_containers/map/pmr_typedefs_debug.cc: Likewise.
 749         * testsuite/23_containers/multimap/pmr_typedefs_debug.cc: Likewise.
 750         * testsuite/23_containers/multiset/pmr_typedefs_debug.cc: Likewise.
 751         * testsuite/23_containers/set/pmr_typedefs_debug.cc: Likewise.
 752         * testsuite/23_containers/unordered_map/pmr_typedefs_debug.cc:
 753         Likewise.
 754         * testsuite/23_containers/unordered_multimap/pmr_typedefs_debug.cc:
 755         Likewise.
 756         * testsuite/23_containers/unordered_multiset/pmr_typedefs_debug.cc:
 757         Likewise.
 758         * testsuite/23_containers/unordered_set/pmr_typedefs_debug.cc:
 759         Likewise.
 760         * testsuite/23_containers/vector/cons/destructible_debug_neg.cc:
 761         Likewise.
 762         * testsuite/23_containers/vector/types/pmr_typedefs_debug.cc: Likewise.
 763         * testsuite/25_algorithms/binary_search/partitioned.cc: Likewise.
 764         * testsuite/25_algorithms/copy/86658.cc: Likewise.
 765         * testsuite/25_algorithms/equal_range/partitioned.cc: Likewise.
 766         * testsuite/25_algorithms/lexicographical_compare/71545.cc: Likewise.
 767         * testsuite/25_algorithms/lower_bound/partitioned.cc: Likewise.
 768         * testsuite/25_algorithms/upper_bound/partitioned.cc: Likewise.
 769
 770         * include/parallel/algo.h: Replace non-reserved names.
 771         * include/parallel/multiway_merge.h: Likewise.
 772         * include/parallel/multiway_mergesort.h: Likewise.
 773         * include/parallel/numericfwd.h: Likewise.
 774         * testsuite/17_intro/names.cc: Add RAI to test macros.
 775
 776 2019-09-30  François Dumont  <fdumont@gcc.gnu.org>
 777
 778         * include/debug/array: Add C++20 constexpr to comparison operators.
 779         * testsuite/23_containers/array/tuple_interface/get_debug_neg.cc: Adapt
 780         dg-error line numbers.
 781         * testsuite/23_containers/array/tuple_interface/
 782         tuple_element_debug_neg.cc: Likewise.
 783
 784 2019-09-30  Andreas Tobler  <andreast@gcc.gnu.org>
 785
 786         * include/experimental/internet: Include netinet/in.h if we have
 787         _GLIBCXX_HAVE_NETINET_IN_H defined.
 788
 789         * testsuite/ext/special_functions/airy_ai/check_nan.cc: Ignore the
 790         FreeBSD warning about lower advertised precision of tgammal.
 791         * testsuite/ext/special_functions/airy_bi/check_nan.cc: Likewise.
 792         * testsuite/special_functions/07_cyl_bessel_i/check_nan.cc: Likewise.
 793         * testsuite/special_functions/08_cyl_bessel_j/check_nan.cc: Likewise.
 794         * testsuite/special_functions/09_cyl_bessel_k/check_nan.cc: Likewise.
 795         * testsuite/special_functions/10_cyl_neumann/check_nan.cc: Likewise.
 796         * testsuite/special_functions/19_sph_bessel/check_nan.cc: Likewise.
 797         * testsuite/special_functions/21_sph_neumann/check_nan.cc: Likewise.
 798         * testsuite/tr1/5_numerical_facilities/special_functions/
 799         08_cyl_bessel_i/check_nan.cc: Likewise.
 800         * testsuite/tr1/5_numerical_facilities/special_functions/
 801         09_cyl_bessel_j/check_nan.cc: Likewise.
 802         * testuite/tr1/5_numerical_facilities/special_functions/
 803         10_cyl_bessel_k/check_nan.cc: Likewise.
 804         * testsuite/tr1/5_numerical_facilities/special_functions/
 805         11_cyl_neumann/check_nan.cc: Likewise.
 806         * testsuite/tr1/5_numerical_facilities/special_functions/
 807         21_sph_bessel/check_nan.cc: Likewise.
 808         * testsuite/tr1/5_numerical_facilities/special_functions/
 809         23_sph_neumann/check_nan.cc: Likewise.
 810
 811 2019-09-30  Jonathan Wakely  <jwakely@redhat.com>
 812
 813         * include/std/span (span(element_type(&)[N]))
 814         (span(array<value_type, N>&), span(const array<value_type, N>&)):
 815         Deduce array element type to allow safe const conversions (LWG 3255).
 816         [!_GLIBCXX_P1394] (span(Container&), span(const Container&)): Use
 817         remove_cv_t on arguments to __is_std_span and __is_std_array.
 818         * testsuite/23_containers/span/lwg3255.cc: New test.
 819
 820         PR libstdc++/77936
 821         * include/parallel/checkers.h (__is_sorted): Remove unused variable.
 822
 823 2019-09-28  François Dumont  <fdumont@gcc.gnu.org>
 824
 825         * include/bits/stl_algo.h (merge): Fix documentation.
 826         * include/debug/functions.h (__check_sorted_aux): Add C++20 constexpr.
 827         (__check_sorted): Likewise and remove nested irreflexive check.
 828         (__check_sorted_set_aux, __check_sorted_set): Add C++20 constexpr.
 829         (__check_partitioned_lower, __check_partitioned_upper): Likewise.
 830         (_Irreflexive_checker::_S_is_valid): Likewise.
 831         (__is_irreflexive, __is_irreflexive_pred): Likewise.
 832         * include/debug/helper_functions.h (__get_distance): Add constexpr.
 833         (__valid_range_aux): Add C++20 constexpr.
 834         (__valid_range(_Iter, _Iter, _Distance_traits<_Iter>::__type&)):
 835         Likewise and add std::is_constant_evaluated check.
 836         (__valid_range_aux(_Iter, _Iter, std::input_iterator_tag)): New.
 837         (__valid_range_aux(_Iter, _Iter, std::random_accss_iterator_tag)): New.
 838         (__valid_range_aux(_Integral, _Integral, std::__true_type)): New,
 839         use latter.
 840         (__valid_range(_Iter, _Iter)): Adapt to use latter, add constexpr and
 841         __builtin_is_contant_evaludated check..
 842         (__can_advance, __base): Add constexpr.
 843         * include/debug/macros.h [_GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED]
 844         (_GLIBCXX_DEBUG_VERIFY_COND_AT): New.
 845         (__glibcxx_check_sorted): Use __glibcxx_check_irreflexive.
 846         (__glibcxx_check_sorted_pred): Use __glibcxx_check_irreflexive_pred.
 847         * testsuite/25_algorithms/binary_search/constexpr.cc: Use irreflexive
 848         std::less.
 849         * testsuite/25_algorithms/is_sorted/constexpr.cc: Likewise.
 850         * testsuite/25_algorithms/merge/constexpr.cc: Fix order in camm. Fix
 851         lambda to be irreflexive.
 852
 853 2019-09-27  Maciej W. Rozycki  <macro@wdc.com>
 854
 855         * configure: Regenerate.
 856
 857 2019-09-27  Jonathan Wakely  <jwakely@redhat.com>
 858
 859         PR libstdc++/91910
 860         * src/c++11/debug.cc (_Safe_iterator_base::_M_detach()): Load pointer
 861         atomically and lock the mutex before accessing the sequence.
 862         (_Safe_local_iterator_base::_M_detach()): Likewise.
 863         (_Safe_iterator_base::_M_reset()): Clear _M_sequence atomically.
 864
 865 2019-09-26  Jonathan Wakely  <jwakely@redhat.com>
 866
 867         * include/debug/array (to_array): Define for debug mode.
 868
 869         * include/bits/stl_pair.h (pair): Add _GLIBCXX20_CONSTEXPR to
 870         piecewise construction constructor, assignment operators, and swap.
 871         * include/std/tuple (pair::pair(piecewise_construct_t, tuple, tuple)):
 872         Add _GLIBCXX20_CONSTEXPR.
 873         (pair::pair(tuple, tuple, _Index_tuple, _Index_tuple)): Likewise.
 874         * testsuite/20_util/pair/constexpr_assign.cc: New test.
 875         * testsuite/20_util/pair/constexpr_swap.cc: New test.
 876
 877         * include/experimental/internet (operator==, operator<): Fix loop
 878         condition to avoid reading past the end of the array.
 879
 880         * include/std/array: Remove references to profile mode.
 881         * include/std/bitset: Likewise.
 882         * include/std/deque: Likewise.
 883         * include/std/forward_list: Likewise.
 884         * include/std/list: Likewise.
 885         * include/std/map: Likewise.
 886         * include/std/set: Likewise.
 887         * include/std/unordered_map: Likewise.
 888         * include/std/unordered_set: Likewise.
 889         * include/std/vector: Likewise.
 890         * testsuite/17_intro/headers/c++1998/profile_mode.cc: New test.
 891         * testsuite/17_intro/headers/c++2011/profile_mode.cc: New test.
 892
 893 2019-09-25  Jonathan Wakely  <jwakely@redhat.com>
 894
 895         * include/bits/regex.h
 896         (basic_regex::assign(const C*, size_t, flag_type)): Add default
 897         argument (LWG 3296).
 898         * testsuite/28_regex/basic_regex/assign/char/lwg3296.cc: New test.
 899         * testsuite/28_regex/basic_regex/assign/wchar_t/lwg3296.cc: New test.
 900
 901 2019-09-24  Jonathan Wakely  <jwakely@redhat.com>
 902
 903         * include/std/variant (variant::index()): Remove impossible case.
 904
 905         PR libstdc++/91871
 906         * testsuite/util/testsuite_hooks.h
 907         (conversion::iterator_to_const_iterator()): Do not return an invalid
 908         iterator. Test direct-initialization and direct-list-initialization
 909         as well as implicit conversion.
 910
 911 2019-09-23  Jonathan Wakely  <jwakely@redhat.com>
 912
 913         PR libstdc++/91788 (partial)
 914         * include/std/variant (variant::index()): Improve codegen for cases
 915         where conversion to size_t already works correctly.
 916
 917 2019-09-23  Andreas Schwab  <schwab@suse.de>
 918
 919         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
 920
 921 2019-09-12  Jonathan Wakely  <jwakely@redhat.com>
 922
 923         PR libstdc++/91748
 924         * include/bits/stl_algo.h (for_each_n): Fix random access iterator
 925         case.
 926         * testsuite/25_algorithms/for_each/for_each_n.cc: Test with random
 927         access iterators.
 928
 929 2019-09-11  Jonathan Wakely  <jwakely@redhat.com>
 930
 931         * python/libstdcxx/v6/xmethods.py (SharedPtrUseCountWorker.__call__):
 932         Fix syntax error.
 933
 934         * testsuite/20_util/result_of/sfinae_friendly_1.cc: Add -Wno-volatile
 935         for C++2a and up. Define HAS_52748_FIXED and fix incorrect tests.
 936         * testsuite/tr1/3_function_objects/result_of.cc: Add -Wno-volatile
 937         for C++2a and up.
 938
 939 2019-09-10  Jonathan Wakely  <jwakely@redhat.com>
 940
 941         * include/std/type_traits (__do_common_type_impl): Implement
 942         additional COND-RES(CREF(D1), CRED(D2)) condition for C++20.
 943         (basic_common_reference, common_reference, common_reference_t): Define
 944         for C++20.
 945         * testsuite/20_util/common_reference/requirements/alias_decl.cc: New
 946         test.
 947         * testsuite/20_util/common_reference/requirements/
 948         explicit_instantiation.cc: New test.
 949         * testsuite/20_util/common_reference/requirements/typedefs.cc: New
 950         test.
 951
 952         * include/std/charconv (to_chars): Rename to __to_chars_i. Define
 953         non-template overloads for each signed and unsigned integer type and
 954         char. Define deleted overload for bool (LWG 3266).
 955         * testsuite/20_util/to_chars/1_neg.cc: Remove.
 956         * testsuite/20_util/to_chars/3.cc: New test.
 957         * testsuite/20_util/to_chars/lwg3266.cc: New test.
 958
 959 2019-09-10  Christophe Lyon  <christophe.lyon@st.com>
 960
 961         * acinclude.m4: Handle uclinux*.
 962         * configure: Regenerate.
 963         * configure.host: Handle uclinux*
 964
 965 2019-09-10  Christophe Lyon  <christophe.lyon@st.com>
 966         Mickaël Guêné <mickael.guene@st.com>
 967
 968         * libsupc++/eh_personality.cc (get_ttype_entry): Add FDPIC
 969         support.
 970
 971 2019-09-10  Jonathan Wakely  <jwakely@redhat.com>
 972
 973         PR libstdc++/91711
 974         * testsuite/23_containers/span/get_neg.cc: Avoid ambiguity due to
 975         0ul being a valid null pointer constant.
 976
 977         * include/std/type_traits (__remove_cv_t): New alias template.
 978         (is_void, is_integral, is_floating_point, is_pointer)
 979         (is_member_object_pointer, is_member_function_pointer, is_null_pointer)
 980         (is_member_point), __is_signed_integer, __is_unsigned_integer)
 981         (__make_unsigned_selector, __make_signed_selector, remove_pointer)
 982         (__decay_selector): Use __remove_cv_t.
 983         (remove_cv): Add partial specializations for cv-qualified types.
 984         (__decay_t): New alias template.
 985         (__decay_and_strip, __common_type_impl, __result_of_impl): Use
 986         __decay_t.
 987         (__enable_if_t): Move earlier in the file.
 988         (_Require): Use __enable_if_t.
 989         (swap(T&, T&)): Use _Require.
 990         (swap(T(&)[N])): Use __enable_if_t.
 991
 992 2019-09-09  Edward Smith-Rowland  <3dw4rd@verizon.net>
 993
 994         Implement C++20 p1424 - 'constexpr' feature macro concerns,
 995         Issue 3256 - Feature testing macro for constexpr algorithms,
 996         and Issue 3257 - Missing feature testing macro update from P0858.
 997         * include/std/version (__cpp_lib_constexpr_algorithms): Bump value.
 998         * include/bits/algorithmfwd.h: Ditto.
 999         * include/std/utility: Ditto.
1000         * testsuite/25_algorithms/constexpr_macro.cc: Ditto.
1001         * testsuite/25_algorithms/cpp_lib_constexpr.cc: New check for
1002         __cpp_lib_constexpr macro in <algorith>.
1003         * testsuite/20_util/exchange/constexpr.cc: Add check for
1004         __cpp_lib_constexpr macro in <utility>.
1005         * testsuite/25_algorithms/adjacent_find/constexpr.cc: Remove check for
1006         __cpp_lib_constexpr_algorithms.
1007         * testsuite/25_algorithms/all_of/constexpr.cc: Ditto.
1008         * testsuite/25_algorithms/any_of/constexpr.cc: Ditto.
1009         * testsuite/25_algorithms/binary_search/constexpr.cc: Ditto.
1010         * testsuite/25_algorithms/copy/constexpr.cc: Ditto.
1011         * testsuite/25_algorithms/copy_backward/constexpr.cc: Ditto.
1012         * testsuite/25_algorithms/copy_if/constexpr.cc: Ditto.
1013         * testsuite/25_algorithms/copy_n/constexpr.cc: Ditto.
1014         * testsuite/25_algorithms/count/constexpr.cc: Ditto.
1015         * testsuite/25_algorithms/count_if/constexpr.cc: Ditto.
1016         * testsuite/25_algorithms/equal/constexpr.cc: Ditto.
1017         * testsuite/25_algorithms/equal_range/constexpr.cc: Ditto.
1018         * testsuite/25_algorithms/fill/constexpr.cc: Ditto.
1019         * testsuite/25_algorithms/fill_n/constexpr.cc: Ditto.
1020         * testsuite/25_algorithms/find/constexpr.cc: Ditto.
1021         * testsuite/25_algorithms/find_end/constexpr.cc: Ditto.
1022         * testsuite/25_algorithms/find_first_of/constexpr.cc: Ditto.
1023         * testsuite/25_algorithms/find_if/constexpr.cc: Ditto.
1024         * testsuite/25_algorithms/find_if_not/constexpr.cc: Ditto.
1025         * testsuite/25_algorithms/for_each/constexpr.cc: Ditto.
1026         * testsuite/25_algorithms/generate/constexpr.cc: Ditto.
1027         * testsuite/25_algorithms/generate_n/constexpr.cc: Ditto.
1028         * testsuite/25_algorithms/is_heap/constexpr.cc: Ditto.
1029         * testsuite/25_algorithms/is_heap_until/constexpr.cc: Ditto.
1030         * testsuite/25_algorithms/is_partitioned/constexpr.cc: Ditto.
1031         * testsuite/25_algorithms/is_permutation/constexpr.cc: Ditto.
1032         * testsuite/25_algorithms/is_sorted/constexpr.cc: Ditto.
1033         * testsuite/25_algorithms/is_sorted_until/constexpr.cc: Ditto.
1034         * testsuite/25_algorithms/lexicographical_compare/constexpr.cc: Ditto.
1035         * testsuite/25_algorithms/lower_bound/constexpr.cc: Ditto.
1036         * testsuite/25_algorithms/merge/constexpr.cc: Ditto.
1037         * testsuite/25_algorithms/mismatch/constexpr.cc: Ditto.
1038         * testsuite/25_algorithms/none_of/constexpr.cc: Ditto.
1039         * testsuite/25_algorithms/partition_copy/constexpr.cc: Ditto.
1040         * testsuite/25_algorithms/partition_point/constexpr.cc: Ditto.
1041         * testsuite/25_algorithms/remove/constexpr.cc: Ditto.
1042         * testsuite/25_algorithms/remove_copy/constexpr.cc: Ditto.
1043         * testsuite/25_algorithms/remove_copy_if/constexpr.cc: Ditto.
1044         * testsuite/25_algorithms/remove_if/constexpr.cc: Ditto.
1045         * testsuite/25_algorithms/replace_copy/constexpr.cc: Ditto.
1046         * testsuite/25_algorithms/replace_copy_if/constexpr.cc: Ditto.
1047         * testsuite/25_algorithms/replace_if/constexpr.cc: Ditto.
1048         * testsuite/25_algorithms/reverse_copy/constexpr.cc: Ditto.
1049         * testsuite/25_algorithms/rotate_copy/constexpr.cc: Ditto.
1050         * testsuite/25_algorithms/search/constexpr.cc: Ditto.
1051         * testsuite/25_algorithms/search_n/constexpr.cc: Ditto.
1052         * testsuite/25_algorithms/set_difference/constexpr.cc: Ditto.
1053         * testsuite/25_algorithms/set_intersection/constexpr.cc: Ditto.
1054         * testsuite/25_algorithms/set_symmetric_difference/constexpr.cc: Ditto.
1055         * testsuite/25_algorithms/set_union/constexpr.cc: Ditto.
1056         * testsuite/25_algorithms/transform/constexpr.cc: Ditto.
1057         * testsuite/25_algorithms/unique/constexpr.cc: Ditto.
1058         * testsuite/25_algorithms/unique_copy/constexpr.cc: Ditto.
1059         * testsuite/25_algorithms/upper_bound/constexpr.cc: Ditto.
1060
1061 2019-09-09  Edward Smith-Rowland  <3dw4rd@verizon.net>
1062
1063         Update docs for recent <span> and constexpr lib changes.
1064         * doc/xml/manual/status_cxx2020.xml: Update p0202r3, p0858r0, p0879r0,
1065         p1023r0, p1085r2 status.
1066         * doc/html/manual/status.html: Regenerate.
1067
1068 2019-09-09  Antony Polukhin  <antoshkka@gmail.com>
1069
1070         * include/bits/charconv.h (__detail::__to_chars_10_impl): Replace
1071         final offsets with constants.
1072
1073 2019-09-09  Jonathan Wakely  <jwakely@redhat.com>
1074
1075         * include/bits/range_access.h (__adl_to_address): Remove.
1076         * include/std/span (__is_base_derived_safe_convertible_v): Replace
1077         with span::__is_compatible.
1078         (__is_std_array_v): Replace with __is_std_array class template and
1079         partial specializations.
1080         (__is_std_array, __is_std_span): New class templates and partial
1081         specializations.
1082         (span::__is_compatible): New alias template for SFINAE constraints.
1083         (span::span(element_type (&)[N])): Remove redundant constraints. Do
1084         not use __adl_data to obtain a pointer.
1085         (span::span(array<value_type, N>&)): Likewise.
1086         (span::span(const array<value_type, N>&)): Likewise.
1087         [_GLIBCXX_P1394] (span::iter_reference_t, span::iterator_t)
1088         (span::iter_value_t, span::derived_from): New alias templates for
1089         SFINAE constraints, until the equivalents are supported in <concepts>
1090         and <iterator>.
1091         [_GLIBCXX_P1394] (span::__is_compatible_iterator): New alias template
1092         for SFINAE constraints.
1093         [_GLIBCXX_P1394] (span::is_compatible_range): New class template for
1094         SFINAE constraints.
1095         [_GLIBCXX_P1394] (span::span(Range&&)): Improve constraints.
1096         [_GLIBCXX_P1394] (span::span(ContiguousIterator, Sentinel)): Likewise.
1097         Use std::to_address instead of __adl_to_address.
1098         [_GLIBCXX_P1394] (span::span(ContiguousIterator, size_type)): Likewise.
1099         [!_GLIBCXX_P1394] (span::__is_compatible_container): New alias
1100         template for SFINAE constraints.
1101         [!_GLIBCXX_P1394] (span::span(Container&))
1102         (span::span(const Container&)): Improve constraints.
1103         [!_GLIBCXX_P1394] (span::span(pointer, size_type))
1104         (span::span(pointer, pointer)): Remove redundant cast of pointer.
1105         (span(const span<OType, OExtent>&)): New constructor.
1106
1107 2019-09-06  Jonathan Wakely  <jwakely@redhat.com>
1108
1109         * include/bits/range_access.h (ssize): Define for C++20.
1110         * testsuite/24_iterators/range_access_cpp20.cc: New test.
1111         * doc/xml/manual/status_cxx2020.xml: Update P1227R2 status.
1112         * doc/html/*: Regenerate.
1113
1114 2019-09-06  Florian Weimer  <fweimer@redhat.com>
1115
1116         * configure: Regenerate.
1117
1118 2019-09-05  Jonathan Wakely  <jwakely@redhat.com>
1119
1120         * doc/xml/manual/status_cxx2020.xml: Update status for P0122R7 and
1121         P1024R3. Remove entry for P0920R2.
1122         * include/std/span  (__cpp_lib_span): Change value.
1123         (__extent_storage, __extent_storage<dynamic_extent>): Remove default
1124         constructor.
1125         (span): Replace __extent_storage base class with data member.
1126         (span::_S_subspan_extent): New function.
1127         (span::empty()): Add nodiscard attribute.
1128         (span::front, span::back, span::operator[]): Check preconditions.
1129         (span::first, span::last, span::subspan): Add noexcept. Improve
1130         precondition checks (LWG 3103).
1131         (get): Remove redundant condition from static_assert.
1132         (tuple_element<I, span<T, E>>): Fix static_assert message and simplify.
1133         (as_writable_bytes): Add inline specifier.
1134         * include/std/version (__cpp_lib_span): Change value.
1135         * testsuite/23_containers/span/back_neg.cc: Remove stray semi-colon.
1136         * testsuite/23_containers/span/front_neg.cc: Likewise.
1137         * testsuite/23_containers/span/index_op_neg.cc: Likewise.
1138         * testsuite/23_containers/span/last_neg.cc: Improve test.
1139         * testsuite/23_containers/span/subspan_neg.cc: Likewise.
1140         * testsuite/23_containers/span/1.cc: New test.
1141         * testsuite/23_containers/span/2.cc: New test.
1142         * testsuite/23_containers/span/back_assert_neg.cc: New test.
1143         * testsuite/23_containers/span/first_2_assert_neg.cc: New test.
1144         * testsuite/23_containers/span/first_assert_neg.cc: New test.
1145         * testsuite/23_containers/span/first_neg.cc: New test.
1146         * testsuite/23_containers/span/front_assert_neg.cc: New test.
1147         * testsuite/23_containers/span/index_op_assert_neg.cc: New test.
1148         * testsuite/23_containers/span/last_2_assert_neg.cc: New test.
1149         * testsuite/23_containers/span/last_assert_neg.cc: New test.
1150         * testsuite/23_containers/span/subspan_2_assert_neg.cc: New test.
1151         * testsuite/23_containers/span/subspan_3_assert_neg.cc: New test.
1152         * testsuite/23_containers/span/subspan_4_assert_neg.cc: New test.
1153         * testsuite/23_containers/span/subspan_5_assert_neg.cc: New test.
1154         * testsuite/23_containers/span/subspan_6_assert_neg.cc: New test.
1155         * testsuite/23_containers/span/subspan_assert_neg.cc: New test.
1156
1157 2019-09-05  JeanHeyd Meneide  <phdofthehouse@gmail.com>
1158
1159         * include/Makefile.am: Add <span> header.
1160         * include/Makefile.in: Regenerate.
1161         * include/bits/range_access.h (__adl_begin, __adl_end, __adl_cbegin)
1162         (__adl_cend, __adl_rbegin, __adl_rend, __adl_crbegin, __adl_crend)
1163         (__adl_data, __adl_cdata, __adl_size, __adl_empty, __adl_to_address):
1164         New functions for performing argument-dependent lookup of range
1165         customization points.
1166         * include/bits/stl_iterator.h (__normal_iterator): Add
1167         _GLIBCXX20_CONSTEXPR to all functions.
1168         * include/std/span: New header.
1169         * include/std/version (__cpp_lib_span): Define feature test macro.
1170         * testsuite/23_containers/span/contiguous_range_neg.cc: New test.
1171         * testsuite/23_containers/span/everything.cc: New test.
1172         * testsuite/23_containers/span/get_neg.cc: New test.
1173         * testsuite/23_containers/span/last_neg.cc: New test.
1174         * testsuite/23_containers/span/subspan_neg.cc: New test.
1175         * testsuite/23_containers/span/tuple_element_dynamic_neg.cc: New test.
1176         * testsuite/23_containers/span/tuple_element_oob_neg.cc: New test.
1177         * testsuite/23_containers/span/tuple_size_neg.cc: New test.
1178
1179 2019-09-05  Jonathan Wakely  <jwakely@redhat.com>
1180
1181         * doc/xml/manual/allocator.xml: Remove URL for bibliography entry.
1182         * doc/html/*: Regenerate.
1183
1184 2019-09-04  Mike Crowe  <mac@mcrowe.com>
1185
1186         PR libstdc++/41861
1187         * acinclude.m4 (GLIBCXX_CHECK_PTHREAD_COND_CLOCKWAIT): Check for new
1188         pthread_cond_clockwait function.
1189         * configure.ac: Use GLIBCXX_CHECK_PTHREAD_COND_CLOCKWAIT.
1190         * configure: Regenerate.
1191         * config.h.in: Regenerate.
1192         * include/std/condition_variable: (condition_variable): Rename
1193         __steady_clock_t typedef and add system_clock. Change __clock_t to be
1194         a typedef for the preferred clock to convert arbitrary other clocks to.
1195         [_GLIBCXX_USE_PTHREAD_COND_CLOCKWAIT] (wait_until): Add a steady_clock
1196         overload.
1197         (wait_until): Change __clock_t overload to use system_clock.
1198         [_GLIBCXX_USE_PTHREAD_COND_CLOCKWAIT] (__wait_until_impl): Add
1199         steady_clock overload that calls pthread_cond_clockwait.
1200         (__wait_until_impl): Change __clock_t overload to use system_clock.
1201         (condition_variable_any) [_GLIBCXX_USE_PTHREAD_COND_CLOCKWAIT]: Use
1202         steady_clock for __clock_t if pthread_cond_clockwait is available.
1203
1204 2019-09-04  Mike Crowe  <mac@mcrowe.com>
1205
1206         * testsuite/30_threads/condition_variable/members/2.cc (test01):
1207         Parameterise so that test can be run against an arbitrary clock.
1208         (main): Test using std::chrono::steady_clock and a user-defined
1209         clock in addition to the previous std::chrono::system_clock.
1210         * testsuite/30_threads/condition_variable_any/members/2.cc: Likewise.
1211
1212 2019-09-03  Ulrich Weigand  <uweigand@de.ibm.com>
1213
1214         * crossconfig.m4: Remove references to spu.
1215         * configure: Regenerate.
1216         * doc/xml/manual/appendix_contributing.xml: Remove references
1217         to __ea as "badword" for spu.
1218         * doc/html/manual/source_code_style.html: Regenerate.
1219         * include/tr1/ell_integral.tcc (__ellint_rd): Do not attempt
1220         to avoid __ea (as "badword" for spu).
1221         (__ellint_rj): Likewise.
1222
1223 2019-09-03  Chung-Lin Tang  <cltang@codesourcery.com>
1224
1225         PR other/79543
1226         * acinclude.m4 (GLIBCXX_CHECK_LINKER_FEATURES): Fix GNU ld --version
1227         scanning to conform to the GNU Coding Standards.
1228         * configure: Regenerate.
1229
1230 2019-09-02  Jonathan Wakely  <jwakely@redhat.com>
1231
1232         * src/c++17/memory_resource.cc: Use __constinit keyword.
1233
1234 2019-09-02  Jonathan Wakely  <jwakely@redhat.com>
1235
1236         * doc/xml/manual/abi.xml: Document 9.x library versions.
1237         * doc/html/*: Regenerate.
1238
1239 2019-09-02  Jonathan Wakely  <jwakely@redhat.com>
1240
1241         * include/std/charconv (__detail::__to_chars_2_len): Use std::log2p1.
1242         (__detail::__to_chars_8_len): Remove.
1243         (__detail::__to_chars_8): Inline length calculation here.
1244         (__detail::__from_chars_binary): Use numeric_limits instead of
1245         CHAR_BIT.
1246
1247 2019-09-02  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
1248
1249         * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
1250         * config/abi/post/i386-solaris/amd64/baseline_symbols.txt: Likewise.
1251         * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
1252         * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
1253         Likewise.
1254
1255 2019-09-01  François Dumont  <fdumont@gcc.gnu.org>
1256
1257         * testsuite_files/util/testsuite_performance.h
1258         (resource_counter::start): Ignore unused malloc(0) result.
1259
1260 2019-09-01  Gerald Pfeifer  <gerald@pfeifer.com>
1261
1262         * doc/xml/manual/policy_data_structures_biblio.xml (COM: Component
1263         Model Object Technologies): Adjust name and link.
1264
1265 2019-08-30  Antony Polukhin  <antoshkka@gmail.com>
1266
1267         * include/std/charconv (__detail::__to_chars_8)
1268         __detail::__to_chars_16): Replace array of precomputed digits with
1269         arithmetic operations to avoid CPU cache misses. Remove zero
1270         termination from array of digits to allow symbol merge with generic
1271         implementation of __detail::__to_chars. Replace final offsets with
1272         constants. Use __detail::__to_chars_len_2 instead of a generic
1273         __detail::__to_chars_len.
1274         (__detail::__to_chars): Remove zero termination from array of digits.
1275         (__detail::__to_chars_2): Leading digit is always '1'.
1276
1277 2019-08-30  Jonathan Wakely  <jwakely@redhat.com>
1278
1279         * testsuite/23_containers/vector/cons/89164_c++17.cc: Fix errors.
1280
1281 2019-08-30  Uros Bizjak  <ubizjak@gmail.com>
1282
1283         * config/abi/post/alpha-linux-gnu/baseline_symbols.txt: Update.
1284
1285 2019-08-30  Jonathan Wakely  <jwakely@redhat.com>
1286
1287         PR libstdc++/89164
1288         * include/bits/stl_algobase.h (__copy_move): Give descriptive names
1289         to template parameters.
1290         * include/bits/stl_uninitialized.h (uninitialized_copy)
1291         (uninitialized_fill, uninitialized_fill_n): Add static assertions to
1292         diagnose invalid uses.
1293         * testsuite/20_util/specialized_algorithms/uninitialized_copy/1.cc:
1294         Adjust expected error.
1295         * testsuite/20_util/specialized_algorithms/uninitialized_copy/89164.cc:
1296         New test.
1297         * testsuite/20_util/specialized_algorithms/uninitialized_copy_n/
1298         89164.cc: New test.
1299         * testsuite/20_util/specialized_algorithms/uninitialized_fill/89164.cc:
1300         New test.
1301         * testsuite/20_util/specialized_algorithms/uninitialized_fill_n/
1302         89164.cc: New test.
1303         * testsuite/23_containers/vector/cons/89164.cc: New test.
1304         * testsuite/23_containers/vector/cons/89164_c++17.cc: New test.
1305
1306 2019-08-29  Jonathan Wakely  <jwakely@redhat.com>
1307
1308         PR libstdc++/91067
1309         * acinclude.m4 (libtool_VERSION): Bump to 6:28:0.
1310         * configure: Regenerate.
1311         * config/abi/pre/gnu.ver (GLIBCXX_3.4.28): Add new version. Export
1312         missing symbols.
1313         * testsuite/27_io/filesystem/iterators/91067.cc: Test move
1314         constructors.
1315         * testsuite/util/testsuite_abi.cc: Add new symbol version.
1316
1317 2019-08-29  Jakub Jelinek  <jakub@redhat.com>
1318
1319         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
1320         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
1321
1322 2019-08-28  Jonathan Wakely  <jwakely@redhat.com>
1323
1324         * config/abi/post/i386-linux-gnu/baseline_symbols.txt: Update.
1325         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
1326         * config/abi/post/powerpc-linux-gnu/baseline_symbols.txt: Update.
1327         * config/abi/post/powerpc64-linux-gnu/32/baseline_symbols.txt: Update.
1328         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
1329         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
1330         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
1331
1332 2019-08-23  Joseph Myers  <joseph@codesourcery.com>
1333
1334         * src/filesystem/ops-common.h [_GLIBCXX_FILESYSTEM_IS_WINDOWS]
1335         (std::filesystem::__gnu_posix::lstat): Add return type.
1336
1337 2019-08-20  Jonathan Wakely  <jwakely@redhat.com>
1338
1339         * doc/doxygen/user.cfg.in (INPUT): Remove profile mode headers.
1340
1341         * include/std/numeric (reduce): Fix Doxygen markup.
1342
1343         PR libstdc++/91371
1344         * include/std/type_traits (is_function): Simplify definition. Remove
1345         partial specializations for function types.
1346         (__is_referenceable): Simplify definition.
1347         * testsuite/20_util/bind/91371.cc: New test.
1348         * testsuite/20_util/is_function/91371.cc: New test.
1349         * testsuite/20_util/is_function/value.cc: Check more pointer types.
1350         * testsuite/20_util/is_member_function_pointer/91371.cc: New test.
1351         * testsuite/20_util/is_object/91371.cc: New test.
1352
1353 2019-08-16  Uros Bizjak  <ubizjak@gmail.com>
1354
1355         * config/abi/post/alpha-linux-gnu/baseline_symbols.txt: Update.
1356
1357 2019-08-15  Jonathan Wakely  <jwakely@redhat.com>
1358
1359         PR libstdc++/91456
1360         * include/bits/std_function.h (__check_func_return_type): Remove.
1361         (function::_Callable): Use std::__is_invocable_impl instead of
1362         __check_func_return_type.
1363         * include/std/type_traits (__is_invocable_impl): Add another defaulted
1364         template parameter. Define a separate partial specialization for
1365         INVOKE and INVOKE<void>. For INVOKE<R> replace is_convertible check
1366         with a check that models delayed temporary materialization.
1367         * testsuite/20_util/function/91456.cc: New test.
1368         * testsuite/20_util/is_invocable/91456.cc: New test.
1369
1370 2019-08-14  Jonathan Wakely  <jwakely@redhat.com>
1371
1372         * include/std/type_traits (__is_nullptr_t): Add deprecated attribute.
1373
1374 2019-08-14  Edward Smith-Rowland  <3dw4rd@verizon.net>
1375
1376         Implement C++20 p0879 - Constexpr for swap and swap related functions.
1377         * include/std/version (__cpp_lib_constexpr_swap_algorithms): New macro.
1378         * include/bits/algorithmfwd.h (__cpp_lib_constexpr_swap_algorithms):
1379         New macro.
1380         (iter_swap, make_heap, next_permutation, partial_sort_copy, pop_heap)
1381         (prev_permutation, push_heap, reverse, rotate, sort_heap, swap)
1382         (swap_ranges, nth_element, partial_sort, sort): Add constexpr.
1383         * include/bits/move.h (swap): Add constexpr.
1384         * include/bits/stl_algo.h (__move_median_to_first, __reverse, reverse)
1385         (__gcd, __rotate, rotate, __partition, __heap_select)
1386         (__partial_sort_copy, partial_sort_copy, __unguarded_partition)
1387         (__unguarded_partition_pivot, __partial_sort, __introsort_loop, __sort)
1388         (__introselect, __chunk_insertion_sort, next_permutation)
1389         (prev_permutation, partition, partial_sort, nth_element, sort)
1390         (__iter_swap::iter_swap, iter_swap, swap_ranges): Add constexpr.
1391         * include/bits/stl_algobase.h (__iter_swap::iter_swap, iter_swap)
1392         (swap_ranges): Add constexpr.
1393         * include/bits/stl_heap.h (__push_heap, push_heap, __adjust_heap,
1394         __pop_heap, pop_heap, __make_heap, make_heap, __sort_heap, sort_heap):
1395         Add constexpr.
1396         * include/std/type_traits (swap): Add constexpr.
1397         * testsuite/25_algorithms/headers/algorithm/synopsis.cc: Add constexpr.
1398         * testsuite/25_algorithms/iter_swap/constexpr.cc: New test.
1399         * testsuite/25_algorithms/make_heap/constexpr.cc: New test.
1400         * testsuite/25_algorithms/next_permutation/constexpr.cc: New test.
1401         * testsuite/25_algorithms/nth_element/constexpr.cc: New test.
1402         * testsuite/25_algorithms/partial_sort/constexpr.cc: New test.
1403         * testsuite/25_algorithms/partial_sort_copy/constexpr.cc: New test.
1404         * testsuite/25_algorithms/partition/constexpr.cc: New test.
1405         * testsuite/25_algorithms/pop_heap/constexpr.cc: New test.
1406         * testsuite/25_algorithms/prev_permutation/constexpr.cc: New test.
1407         * testsuite/25_algorithms/push_heap/constexpr.cc: New test.
1408         * testsuite/25_algorithms/reverse/constexpr.cc: New test.
1409         * testsuite/25_algorithms/rotate/constexpr.cc: New test.
1410         * testsuite/25_algorithms/sort/constexpr.cc: New test.
1411         * testsuite/25_algorithms/sort_heap/constexpr.cc: New test.
1412         * testsuite/25_algorithms/swap/constexpr.cc: New test.
1413         * testsuite/25_algorithms/swap_ranges/constexpr.cc: New test.
1414
1415 2019-08-12  Jonathan Wakely  <jwakely@redhat.com>
1416
1417         PR libstdc++/90361
1418         * src/c++17/string-inst.cc: Use _GLIBCXX_USE_CXX11_ABI=1 by default.
1419
1420         * include/std/tuple (__unpack_std_tuple): New variable template and
1421         partial specializations.
1422         (apply, make_from_tuple): Add noexcept-specifier.
1423         * testsuite/20_util/tuple/apply/2.cc: New test.
1424         * testsuite/20_util/tuple/make_from_tuple/2.cc: New test.
1425
1426 2019-08-09  Corentin Gay  <gay@adacore.com>
1427
1428         * testsuite/ext/random/beta_distribution/operators/serialize.cc,
1429         testsuite/ext/random/hypergeometric_distribution/operators/serialize.cc,
1430         testsuite/ext/random/normal_mv_distribution/operators/serialize.cc,
1431         testsuite/ext/random/triangular_distribution/operators/serialize.cc,
1432         testsuite/ext/random/von_mises_distribution/operators/serialize.cc:
1433         Add call to `VERIFY`.
1434
1435 2019-08-09  Alexandre Oliva <oliva@adacore.com>
1436
1437         * include/ext/random
1438         (normal_mv_distribution::param_type::param_type): New private
1439         ctor taking a decomposed varcov matrix, for use by...
1440         (operator>>): ... this, befriended.
1441         * include/ext/random.tcc (operator>>): Use it.
1442         (normal_mv_distribution::param_type::_M_init_lower): Adjust
1443         member function name in exception message.
1444
1445 2019-08-08  Jonathan Wakely  <jwakely@redhat.com>
1446
1447         P0325R4 to_array from LFTS with updates
1448         * include/experimental/array (to_array): Qualify call to __to_array.
1449         * include/std/array (__cpp_lib_to_array, to_array): Define for C++20.
1450         * include/std/version (__cpp_lib_to_array): Likewise.
1451         * testsuite/23_containers/array/creation/1.cc: New test.
1452         * testsuite/23_containers/array/creation/2.cc: New test.
1453         * testsuite/23_containers/array/creation/3_neg.cc: New test.
1454         * testsuite/23_containers/array/tuple_interface/tuple_element_neg.cc:
1455         Use zero for dg-error line number.
1456
1457 2019-08-06  Jonathan Wakely  <jwakely@redhat.com>
1458
1459         P1651R0 bind_front should not unwrap reference_wrapper
1460         * include/std/functional (bind_front): Don't unwrap reference_wrapper.
1461         * include/std/version (__cpp_lib_bind_front): Update value.
1462         * testsuite/20_util/function_objects/bind_front/1.cc: Fix test for
1463         feature test macro.
1464         * testsuite/20_util/function_objects/bind_front/2.cc: New test.
1465
1466         * include/std/numbers [!__STRICT_ANSI__ && _GLIBCXX_USE_FLOAT128]
1467         (e_v, log2e_v, log10e_v, pi_v, inv_pi_v, inv_sqrtpi_v, ln2_v, ln10_v)
1468         (sqrt2_v, sqrt3_v, inv_sqrt3, egamma_v, phi_v): Add explicit
1469         specializations for __float128.
1470         * testsuite/26_numerics/numbers/float128.cc: New test.
1471
1472 2019-08-04  Gerald Pfeifer  <gerald@pfeifer.com>
1473
1474         * doc/xml/manual/documentation_hacking.xml: doxygen.org is now
1475         doxygen.nl.
1476
1477 2019-08-01  Edward Smith-Rowland  <3dw4rd@verizon.net>
1478
1479         Implement C++20 p0202 - Add Constexpr Modifiers to Functions
1480         in <algorithm> and <utility> Headers.
1481         Implement C++20 p1023 - constexpr comparison operators for std::array.
1482         * include/bits/algorithmfwd.h (all_of, any_of, binary_search, copy,
1483         copy_backward, copy_if, copy_n, equal_range, fill, find_end,
1484         find_if_not, includes, is_heap, is_heap_until, is_partitioned,
1485         is_permutation, is_sorted, is_sorted_until, iter_swap, lower_bound,
1486         none_of, partition_copy, partition_point, remove, remove_if,
1487         remove_copy, remove_copy_if, replace_copy, replace_copy_if,
1488         reverse_copy, rotate_copy, uunique, upper_bound, adjacent_find, count,
1489         count_if, equal, find, find_first_of, find_if, for_each, generate,
1490         generate_n, lexicographical_compare, merge, mismatch, replace,
1491         replace_if, search, search_n, set_difference, set_intersection,
1492         set_symmetric_difference, set_union, transform, unique_copy):
1493         Mark constexpr.
1494         * include/bits/cpp_type_traits.h (__miter_base): Mark constexpr.
1495         * include/bits/predefined_ops.h (_Iter_less_val::operator(),
1496         _Val_less_iter::operator(), _Iter_equal_to_iter::operator(),
1497         _Iter_equal_to_val::operator(), _Iter_equals_val::operator()):
1498          Use const ref instead of ref arg;
1499         (_Iter_less_val, __iter_less_val, _Val_less_iter, __val_less_iter,
1500         __iter_equal_to_iter, __iter_equal_to_val, __iter_comp_val,
1501         _Iter_comp_val, _Val_comp_iter, __val_comp_iter, __iter_equals_val,
1502         _Iter_equals_iter, __iter_comp_iter, _Iter_pred, __pred_iter,
1503         _Iter_comp_to_val, __iter_comp_val, _Iter_comp_to_iter,
1504         __iter_comp_iter): Mark constexpr.
1505         * include/bits/stl_algo.h (__find_if, __find_if_not, __find_if_not_n,
1506         __search, __search_n_aux, __search_n, __find_end, find_end, all_of,
1507         none_of, any_of, find_if_not, is_partitioned, partition_point,
1508         __remove_copy_if, remove_copy, remove_copy_if, copy_if, __copy_n,
1509         copy_n, partition_copy, __remove_if, remove, remove_if, __adjacent_find,
1510         __unique, unique, __unique_copy, reverse_copy, rotate_copy,
1511         __unguarded_linear_insert, __insertion_sort, __unguarded_insertion_sort,
1512         __final_insertion_sort, lower_bound, __upper_bound, upper_bound,
1513         __equal_range, equal_range, binary_search, __includes, includes,
1514         __next_permutation, __prev_permutation, __replace_copy_if, replace_copy,
1515         replace_copy_if, __count_if, is_sorted, __is_sorted_until,
1516         is_sorted_until, __is_permutation, is_permutation, for_each, find,
1517         find_if, find_first_of, adjacent_find, count, count_if, search,
1518         search_n, transform, replace, replace_if, generate, generate_n,
1519         unique_copy, __merge, merge, __set_union, set_union, __set_intersection,
1520         set_intersection, __set_difference, set_difference,
1521         __set_symmetric_difference, set_symmetric_difference):  Mark constexpr.
1522         * include/bits/stl_algobase.h (__memmove, __memcmp): New maybe constexpr
1523         wrappers around __builtin_memmove and __builtin_memcmp
1524         respectively;
1525         (__niter_base, __niter_wrap, __copy_m, __copy_move_a, __copy_move_a2,
1526         copy, move, __copy_move_b, __copy_move_backward_a,
1527         __copy_move_backward_a2, copy_backward, move_backward, __fill_a, fill,
1528         __fill_n_a, fill_n, equal, __lc_rai::__newlast1, __lc_rai::__cnd2,
1529         __lexicographical_compare_impl, __lexicographical_compare,
1530         __lexicographical_compare<true>::__lc, __lexicographical_compare_aux,
1531         __lower_bound, lower_bound, equal, __equal4, lexicographical_compare,
1532         __mismatch, mismatch, __is_heap_until, __is_heap, is_heap_until,
1533         is_heap): Mark constexpr.
1534         * include/bits/stl_heap.h (__is_heap_until, __is_heap, is_heap_until,
1535         is_heap): Mark constexpr.
1536         * include/bits/stl_iterator.h (__niter_base, __miter_base): Mark constexpr.
1537         * include/std/array: Make comparison ops constexpr.
1538         * include/std/utility: Make exchange constexpr.
1539         * include/std/version (__cpp_lib_constexpr_algorithms): New macro.
1540         * testsuite/23_containers/array/tuple_interface/get_neg.cc: Adjust.
1541         * testsuite/23_containers/array/tuple_interface/
1542         tuple_element_neg.cc: Adjust.
1543         * testsuite/20_util/exchange/constexpr.cc: New.
1544         * testsuite/23_containers/array/comparison_operators/constexpr.cc: New.
1545         * testsuite/25_algorithms/constexpr_macro.cc: New.
1546         * testsuite/25_algorithms/adjacent_find/constexpr.cc: New.
1547         * testsuite/25_algorithms/all_of/constexpr.cc: New.
1548         * testsuite/25_algorithms/any_of/constexpr.cc: New.
1549         * testsuite/25_algorithms/binary_search/constexpr.cc: New.
1550         * testsuite/25_algorithms/copy/constexpr.cc: New.
1551         * testsuite/25_algorithms/copy_backward/constexpr.cc: New.
1552         * testsuite/25_algorithms/copy_if/constexpr.cc: New.
1553         * testsuite/25_algorithms/copy_n/constexpr.cc: New.
1554         * testsuite/25_algorithms/count/constexpr.cc: New.
1555         * testsuite/25_algorithms/count_if/constexpr.cc: New.
1556         * testsuite/25_algorithms/equal/constexpr.cc: New.
1557         * testsuite/25_algorithms/equal_range/constexpr.cc: New.
1558         * testsuite/25_algorithms/fill/constexpr.cc: New.
1559         * testsuite/25_algorithms/fill_n/constexpr.cc: New.
1560         * testsuite/25_algorithms/find/constexpr.cc: New.
1561         * testsuite/25_algorithms/find_end/constexpr.cc: New.
1562         * testsuite/25_algorithms/find_first_of/constexpr.cc: New.
1563         * testsuite/25_algorithms/find_if/constexpr.cc: New.
1564         * testsuite/25_algorithms/find_if_not/constexpr.cc: New.
1565         * testsuite/25_algorithms/for_each/constexpr.cc: New.
1566         * testsuite/25_algorithms/generate/constexpr.cc: New.
1567         * testsuite/25_algorithms/generate_n/constexpr.cc: New.
1568         * testsuite/25_algorithms/is_heap/constexpr.cc: New.
1569         * testsuite/25_algorithms/is_heap_until/constexpr.cc: New.
1570         * testsuite/25_algorithms/is_partitioned/constexpr.cc: New.
1571         * testsuite/25_algorithms/is_permutation/constexpr.cc: New.
1572         * testsuite/25_algorithms/is_sorted/constexpr.cc: New.
1573         * testsuite/25_algorithms/is_sorted_until/constexpr.cc: New.
1574         * testsuite/25_algorithms/lexicographical_compare/constexpr.cc: New.
1575         * testsuite/25_algorithms/lower_bound/constexpr.cc: New.
1576         * testsuite/25_algorithms/merge/constexpr.cc: New.
1577         * testsuite/25_algorithms/mismatch/constexpr.cc: New.
1578         * testsuite/25_algorithms/none_of/constexpr.cc: New.
1579         * testsuite/25_algorithms/partition_copy/constexpr.cc: New.
1580         * testsuite/25_algorithms/partition_point/constexpr.cc: New.
1581         * testsuite/25_algorithms/remove/constexpr.cc: New.
1582         * testsuite/25_algorithms/remove_copy/constexpr.cc: New.
1583         * testsuite/25_algorithms/remove_copy_if/constexpr.cc: New.
1584         * testsuite/25_algorithms/remove_if/constexpr.cc: New.
1585         * testsuite/25_algorithms/replace_copy/constexpr.cc: New.
1586         * testsuite/25_algorithms/replace_copy_if/constexpr.cc: New.
1587         * testsuite/25_algorithms/replace_if/constexpr.cc: New.
1588         * testsuite/25_algorithms/reverse_copy/constexpr.cc: New.
1589         * testsuite/25_algorithms/rotate_copy/constexpr.cc: New.
1590         * testsuite/25_algorithms/search/constexpr.cc: New.
1591         * testsuite/25_algorithms/search_n/constexpr.cc: New.
1592         * testsuite/25_algorithms/set_difference/constexpr.cc: New.
1593         * testsuite/25_algorithms/set_intersection/constexpr.cc: New.
1594         * testsuite/25_algorithms/set_symmetric_difference/constexpr.cc: New.
1595         * testsuite/25_algorithms/set_union/constexpr.cc: New.
1596         * testsuite/25_algorithms/transform/constexpr.cc: New.
1597         * testsuite/25_algorithms/unique/constexpr.cc: New.
1598         * testsuite/25_algorithms/unique_copy/constexpr.cc: New.
1599         * testsuite/25_algorithms/upper_bound/constexpr.cc: New.
1600
1601 2019-07-31  Jonathan Wakely  <jwakely@redhat.com>
1602
1603         * include/std/memory (make_obj_using_allocator): Qualify call to
1604         uses_allocator_construction_args.
1605
1606         P0631R4 Math Constants
1607         * include/Makefile.am: Add new header.
1608         * include/Makefile.in: Regenerate.
1609         * include/precompiled/stdc++.h: Include new header.
1610         * include/std/numbers: New header.
1611         * include/std/version (__cpp_lib_math_constants): Define.
1612         * testsuite/26_numerics/numbers/1.cc: New test.
1613         * testsuite/26_numerics/numbers/2.cc: New test.
1614         * testsuite/26_numerics/numbers/3.cc: New test.
1615         * testsuite/26_numerics/numbers/nonfloat_neg.cc: New test.
1616
1617         * include/std/bit: Add Doxygen comments.
1618
1619         PR libstdc++/91308
1620         * include/bits/unique_ptr.h (unique_ptr::__safe_conversion_up): Remove
1621         constraints on deleter that should only apply to the constructor.
1622         (unique_ptr<T[], D>::__safe_conversion_up): Likewise.
1623         (unique_ptr<T[], D>::unique_ptr(unique_ptr<U, D>&&)): Restore
1624         constraints on deleter here.
1625         * testsuite/20_util/unique_ptr/assign/91308.cc: New test.
1626
1627 2019-07-29  Jonathan Wakely  <jwakely@redhat.com>
1628
1629         PR libstdc++/51333
1630         * libsupc++/cxxabi.h (__gnu_cxx::recursive_init_error): Do not define
1631         constructor inline.
1632         * libsupc++/guard_error.cc (__gnu_cxx::recursive_init_error): Define
1633         constructor.
1634         * testsuite/18_support/51333.cc: New test.
1635
1636 2019-07-28  Gerald Pfeifer  <gerald@pfeifer.com>
1637
1638         * doc/xml/manual/documentation_hacking.xml: Fix broken reference
1639         to the Doxygen manual. Avoid a "here" link on the way.
1640         Fix another broken link to Doxygen docblocks.
1641
1642 2019-07-26  Jonathan Wakely  <jwakely@redhat.com>
1643
1644         * include/std/bit (__cpp_lib_endian): Define.
1645         * include/std/version (__cpp_lib_endian): Define.
1646         * testsuite/26_numerics/endian/2.cc: New.
1647         * testsuite/26_numerics/endian/3.cc: New.
1648         * testsuite/26_numerics/endian/4.cc: New.
1649
1650 2019-07-26  François Dumont  <fdumont@gcc.gnu.org>
1651
1652         * testsuite/util/testsuite_iterators.h
1653         (bidirectional_iterator_wrapper): Fix type comment.
1654         (random_access_iterator_wrapper): Likewise.
1655
1656 2019-07-25  Jonathan Wakely  <jwakely@redhat.com>
1657
1658         * include/std/bit (endian): Move definition here as per P1612R1.
1659         * include/std/type_traits (endian): Remove definition from here.
1660         * testsuite/20_util/endian/1.cc: Rename to ...
1661         * testsuite/26_numerics/endian/1.cc: ... here. Adjust header.
1662
1663 2019-07-25  Martin Liska  <mliska@suse.cz>
1664             Dominik Infuhr  <dominik.infuehr@theobroma-systems.com>
1665
1666         PR c++/23383
1667         * testsuite/ext/bitmap_allocator/check_delete.cc: Add
1668         -fno-allocation-dce.
1669         * testsuite/ext/bitmap_allocator/check_new.cc: Likewise.
1670         * testsuite/ext/new_allocator/check_delete.cc: Likewise.
1671         * testsuite/ext/new_allocator/check_new.cc: Likewise.
1672
1673 2019-07-22  Jonathan Wakely  <jwakely@redhat.com>
1674
1675         * testsuite/26_numerics/bit/bitops.count/*: Rename to ...
1676         * testsuite/26_numerics/bit/bit.count/*: Here.
1677
1678         * include/std/bit (__rotl, __rotr): Change second parameter from
1679         unsigned int to int and handle negative values.
1680         (rotl, rotr): Remove check for __STRICT_ANSI__. Change second
1681         parameter from unsigned int to int. Add nodiscard attribute.
1682         * testsuite/26_numerics/bit/bitops.rot/rotl.cc: Rename to ...
1683         * testsuite/26_numerics/bit/bit.rotate/rotl.cc: Here. Test negative
1684         shifts.
1685         * testsuite/26_numerics/bit/bitops.rot/rotr.cc: Rename to ...
1686         * testsuite/26_numerics/bit/bit.rotate/rotr.cc: Here. Test negative
1687         shifts.
1688
1689         * include/std/bit (__ceil2): Make unrepresentable results undefined,
1690         as per P1355R2. Add debug assertion. Perform one left shift, not two,
1691         so that out of range values cause undefined behaviour. Ensure that
1692         shift will still be undefined if left operand is promoted.
1693         * testsuite/26_numerics/bit/bit.pow.two/ceil2.cc: Replace checks for
1694         unrepresentable values with checks that they are not core constant
1695         expressions.
1696         * testsuite/26_numerics/bit/bit.pow.two/ceil2_neg.cc: New test.
1697
1698 2019-07-19  François Dumont  <fdumont@gcc.gnu.org>
1699
1700         * include/bits/stl_tempbuf.h (__detail::__return_temporary_buffer): Fix
1701         sized deallocation size computation.
1702
1703 2019-07-19  Andreas Schwab  <schwab@linux-m68k.org>
1704
1705         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
1706
1707 2019-07-18  François Dumont  <fdumont@gcc.gnu.org>
1708
1709         * include/bits/stl_tempbuf.h (__detail::__return_temporary_buffer): New.
1710         (~_Temporary_buffer()): Use latter.
1711         (_Temporary_buffer(_FIterator, size_type)): Likewise.
1712
1713 2019-07-17  Andreas Schwab  <schwab@suse.de>
1714
1715         * config/abi/post/ia64-linux-gnu/baseline_symbols.txt: Update.
1716
1717 2019-07-16  Jason Merrill  <jason@redhat.com>
1718
1719         * include/std/memory (uses_allocator_construction_args): Add parens
1720         around constraint.
1721
1722 2019-07-12  Jonathan Wakely  <jwakely@redhat.com>
1723
1724         * testsuite/29_atomics/atomic_float/1.cc: Fix comment.
1725
1726         * include/experimental/string_view (__detail::__idt): Remove.
1727         (operator==, operator!=, operator<, operator>, operator<=, operator>=):
1728         Use __type_identity_t instead of __detail::__idt;
1729         * include/std/string_view (__detail::__idt): Remove.
1730         (operator==, operator!=, operator<, operator>, operator<=, operator>=):
1731         Use __type_identity_t instead of __detail::__idt;
1732         * include/std/type_traits (__type_identity_t): New alias template.
1733
1734         * doc/xml/manual/status_cxx2020.xml: Update status for atomic_ref
1735         and floating point atomics.
1736
1737 2019-07-11  Jonathan Wakely  <jwakely@redhat.com>
1738
1739         * doc/xml/manual/configure.xml: Improve documentation of
1740         --enable-libstdcxx-time option.
1741
1742         * include/bits/atomic_base.h (__atomic_impl): New namespace for
1743         wrappers around atomic built-ins.
1744         (__atomic_float, __atomic_ref): New class templates for use as base
1745         classes.
1746         * include/std/atomic (atomic<float>, atomic<double>)
1747         (atomic<long double>): New explicit specializations.
1748         (atomic_ref): New class template.
1749         (__cpp_lib_atomic_ref): Define.
1750         * include/std/version (__cpp_lib_atomic_ref): Define.
1751         * testsuite/29_atomics/atomic/60695.cc: Adjust dg-error.
1752         * testsuite/29_atomics/atomic_float/1.cc: New test.
1753         * testsuite/29_atomics/atomic_float/requirements.cc: New test.
1754         * testsuite/29_atomics/atomic_ref/deduction.cc: New test.
1755         * testsuite/29_atomics/atomic_ref/float.cc: New test.
1756         * testsuite/29_atomics/atomic_ref/generic.cc: New test.
1757         * testsuite/29_atomics/atomic_ref/integral.cc: New test.
1758         * testsuite/29_atomics/atomic_ref/pointer.cc: New test.
1759         * testsuite/29_atomics/atomic_ref/requirements.cc: New test.
1760
1761 2019-07-06  Jonathan Wakely  <jwakely@redhat.com>
1762
1763         * include/ext/atomicity.h (__exchange_and_add, __atomic_add): Replace
1764         throw() with _GLIBCXX_NOTHROW.
1765         (__atomic_add_dispatch): Return after performing atomic increment.
1766
1767 2019-07-05  Jonathan Wakely  <jwakely@redhat.com>
1768
1769         * include/ext/atomicity.h [_GLIBCXX_ATOMIC_BUILTINS] (__atomic_add)
1770         (__exchange_and_add): Replace static specifier with always_inline
1771         attribute.
1772         (__exchange_and_add_single, __atomic_add_single): Likewise.
1773         (__exchange_and_add_dispatch, __atomic_add_dispatch): Likewise. Also
1774         combine !__gthread_active_p() and !__GTHREADS branches.
1775
1776 2019-07-03  Jonathan Wakely  <jwakely@redhat.com>
1777
1778         PR libstdc++/91067
1779         * acinclude.m4 (libtool_VERSION): Bump to 6:27:0.
1780         * configure: Regenerate.
1781         * config/abi/pre/gnu.ver (GLIBCXX_3.4.27): Add new version. Export
1782         missing symbols.
1783         * testsuite/27_io/filesystem/iterators/91067.cc: New test.
1784         * testsuite/util/testsuite_abi.cc: Add new symbol version.
1785
1786 2019-07-02  Jonathan Wakely  <jwakely@redhat.com>
1787
1788         * include/bits/c++config (_GLIBCXX_HAVE_BUILTIN_LAUNDER)
1789         (_GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED): Use __has_builtin
1790         instead of __is_identifier to detect Clang support.
1791
1792 2019-07-02  Jim Wilson  <jimw@sifive.com>
1793
1794         * configure.ac (BUILD_PDF): Also test for doxygen, dot, xsltproc,
1795         and xmllint.
1796         * configure: Regenerate.
1797
1798 2019-06-27  Jonathan Wakely  <jwakely@redhat.com>
1799
1800         PR libstdc++/91012
1801         * src/c++17/fs_path.cc (filesystem_error::_Impl): Use a string_view
1802         for the what_arg parameters.
1803         (filesystem_error::filesystem_error): Pass system_error::what() to
1804         the _Impl constructor.
1805         * testsuite/27_io/filesystem/filesystem_error/cons.cc: Ensure that
1806         filesystem_error::what() contains system_error::what().
1807
1808 2019-06-26  Jonathan Wakely  <jwakely@redhat.com>
1809
1810         * include/std/charconv (chars_format): Define bitmask type.
1811         * testsuite/20_util/to_chars/chars_format.cc: New test.
1812
1813         * include/bits/fs_path.h (path::__is_encoded_char): Use __is_one_of.
1814         * include/std/bit (_If_is_unsigned_integer_type): Remove.
1815         (_If_is_unsigned_integer): Use __is_unsigned_integer.
1816         (rotl(byte, unsigned), rotr(byte, unsigned), countl_zero(byte))
1817         (countl_one(byte), countr_zero(byte), countr_one(byte))
1818         (popcount(byte), ispow2(byte), ceil2(byte), floor2(byte))
1819         (log2p1(byte)): Remove.
1820         * include/std/charconv (__detail::__is_one_of): Move to <type_traits>.
1821         (__detail::__is_int_to_chars_type): Remove.
1822         (__detail::__integer_to_chars_result_type): Use __is_signed_integer
1823         and __is_unsigned_integer.
1824         * include/std/type_traits (__is_one_of): Move here from <charconv>.
1825         (__is_signed_integer, __is_unsigned_integer): New helpers.
1826         * testsuite/26_numerics/bit/bit.pow.two/ceil2.cc: Remove test for
1827         std::byte overload.
1828         * testsuite/26_numerics/bit/bit.pow.two/floor2.cc: Likewise.
1829         * testsuite/26_numerics/bit/bit.pow.two/ispow2.cc: Likewise.
1830         * testsuite/26_numerics/bit/bit.pow.two/log2p1.cc: Likewise.
1831         * testsuite/26_numerics/bit/bitops.count/countl_one.cc: Likewise.
1832         * testsuite/26_numerics/bit/bitops.count/countl_zero.cc: Likewise.
1833         * testsuite/26_numerics/bit/bitops.count/countr_one.cc: Likewise.
1834         * testsuite/26_numerics/bit/bitops.count/countr_zero.cc: Likewise.
1835         * testsuite/26_numerics/bit/bitops.count/popcount.cc: Likewise.
1836         * testsuite/26_numerics/bit/bitops.rot/rotl.cc: Likewise.
1837         * testsuite/26_numerics/bit/bitops.rot/rotr.cc: Likewise.
1838
1839 2019-06-25  Jonathan Wakely  <jwakely@redhat.com>
1840
1841         * include/std/numeric (midpoint(T, T)): Avoid std::abs in constexpr
1842         function.
1843
1844 2019-06-25  Jakub Jelinek  <jakub@redhat.com>
1845
1846         * include/pstl/pstl_config.h (_PSTL_PRAGMA_SIMD_SCAN,
1847         _PSTL_PRAGMA_SIMD_INCLUSIVE_SCAN, _PSTL_PRAGMA_SIMD_EXCLUSIVE_SCAN):
1848         Define to OpenMP 5.0 pragmas even for GCC 10.0+.
1849         (_PSTL_UDS_PRESENT): Define to 1 for GCC 10.0+.
1850
1851 2019-06-24  Jonathan Wakely  <jwakely@redhat.com>
1852
1853         * include/std/numeric (midpoint(T, T)): Change implementation for
1854         floating-point types to avoid incorrect rounding of denormals.
1855         * testsuite/26_numerics/midpoint/floating.cc: Add check for correct
1856         rounding with denormals.
1857         * testsuite/26_numerics/gcd/gcd_neg.cc: Adjust dg-error line numbers.
1858         * testsuite/26_numerics/lcm/lcm_neg.cc: Likewise.
1859
1860         * testsuite/18_support/headers/cfloat/values_c++17.cc: New test.
1861
1862 2019-06-20  Jonathan Wakely  <jwakely@redhat.com>
1863
1864         * acinclude.m4 (GLIBCXX_ENABLE_DEBUG): Only do debug build for final
1865         stage of bootstrap.
1866         * configure: Regenerate.
1867
1868         * include/std/variant (_Variant_storage, _Extra_visit_slot_needed):
1869         Qualify calls to __never_valueless.
1870
1871         * doc/xml/manual/status_cxx2017.xml: Fix outdated reference to
1872         C++17 working draft.
1873
1874         * testsuite/libstdc++-prettyprinters/simple.cc: Use non-palindromic
1875         vector<bool> for test.
1876         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
1877
1878 2019-06-19  Jonathan Wakely  <jwakely@redhat.com>
1879
1880         * include/bits/stream_iterator.h (istream_iterator::_M_equal()): Make
1881         private.
1882         (istream_iterator::_M_read()): Do not check stream state before
1883         attempting extraction. Set stream pointer to null when extraction
1884         fails (P0738R2).
1885         (operator==(const istream_iterator&, const istream_iterator&)): Change
1886         to be a hidden friend of istream_iterator.
1887         (operator!=(const istream_iterator&, const istream_iterator&)):
1888         Likewise.
1889         (ostream_iterator::ostream_iterator()): Add default constructor.
1890         (ostream_iterator::ostream_iterator(ostream_type*, const C*)): Use
1891         addressof.
1892         * testsuite/24_iterators/istream_iterator/1.cc: New test.
1893         * testsuite/24_iterators/ostream_iterator/1.cc: New test.
1894         * testsuite/24_iterators/ostream_iterator/70766.cc: Also check
1895         constructor taking a string.
1896         * testsuite/24_iterators/ostream_iterator/requirements/constexpr.cc:
1897         New test.
1898
1899 2019-06-19  Michael Weghorn  <m.weghorn@posteo.de>
1900             Jonathan Wakely  <jwakely@redhat.com>
1901
1902         PR libstdc++/90945
1903         * python/libstdcxx/v6/printers.py (StdVectorPrinter._iterator): Use
1904         values of type bool for vector<bool> elements.
1905         * testsuite/libstdc++-prettyprinters/simple.cc: Test vector<bool>.
1906         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
1907
1908 2019-06-19  Jonathan Wakely  <jwakely@redhat.com>
1909
1910         PR libstdc++/90920 partially revert r263433
1911         * include/bits/stl_algo.h (__rotate): Restore checks for empty ranges.
1912         (rotate): Remove checks.
1913         * testsuite/25_algorithms/rotate/90920.cc: New test.
1914
1915         * include/std/numeric (reduce(Iter, Iter, T, BinOp)): Fix value
1916         category used in invocable check.
1917         (reduce(Iter, Iter, T)): Pass initial value as rvalue.
1918         * testsuite/26_numerics/reduce/2.cc: New test.
1919
1920 2019-06-18  Jonathan Wakely  <jwakely@redhat.com>
1921
1922         * include/bits/algorithmfwd.h: Change title of doc group.
1923         * include/bits/stl_algo.h (for_each_n): Add new C++17 algorithm from
1924         P0024R2.
1925         * include/bits/stl_numeric.h: Define doc group and add algos to it.
1926         * include/std/numeric (__is_random_access_iter): New internal trait.
1927         (reduce, transform_reduce, exclusive_scan, inclusive_scan)
1928         (transform_exclusive_scan, transform_inclusive_scan): Likewise.
1929         * testsuite/25_algorithms/for_each/for_each_n.cc: New test.
1930         * testsuite/26_numerics/exclusive_scan/1.cc: New test.
1931         * testsuite/26_numerics/inclusive_scan/1.cc: New test.
1932         * testsuite/26_numerics/reduce/1.cc: New test.
1933         * testsuite/26_numerics/transform_exclusive_scan/1.cc: New test.
1934         * testsuite/26_numerics/transform_inclusive_scan/1.cc: New test.
1935         * testsuite/26_numerics/transform_reduce/1.cc: New test.
1936         * testsuite/util/testsuite_iterators.h (test_container::size()): New
1937         member function.
1938
1939         * include/c_global/cstddef (std::byte): Perform arithmetic operations
1940         in unsigned int to avoid promotion (LWG 2950).
1941
1942 2019-06-17  Jonathan Wakely  <jwakely@redhat.com>
1943
1944         * testsuite/20_util/allocator/1.cc: Add sized delete, which fixes a
1945         failure on AIX.
1946
1947         * include/c_global/cmath (__lerp, lerp): Add noexcept (LWG 3201).
1948
1949         PR libstdc++/90281 Fix string conversions for filesystem::path
1950         * include/bits/fs_path.h (u8path) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]:
1951         Use codecvt_utf8_utf16 instead of codecvt_utf8. Use
1952         __str_codecvt_in_all to fail for partial conversions and throw on
1953         error.
1954         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS && _GLIBCXX_USE_CHAR8_T]
1955         (path::_Cvt<char8_t>): Add explicit specialization.
1956         [_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_wconvert): Remove
1957         overloads.
1958         [_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_convert): Use
1959         if-constexpr instead of dispatching to _S_wconvert. Use codecvt
1960         instead of codecvt_utf8. Use __str_codecvt_in_all and
1961         __str_codecvt_out_all.
1962         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_convert): Use
1963         codecvt instead of codecvt_utf8. Use __str_codecvt_out_all.
1964         (path::_S_str_convert) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
1965         codecvt_utf8_utf16 instead of codecvt_utf8. Construct return values
1966         with allocator. Use __str_codecvt_out_all. Fallthrough to POSIX code
1967         after converting to UTF-8.
1968         (path::_S_str_convert): Use codecvt instead of codecvt_utf8. Use
1969         __str_codecvt_in_all.
1970         (path::string): Fix initialization of string types with different
1971         allocators.
1972         (path::u8string) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
1973         codecvt_utf8_utf16 instead of codecvt_utf8. Use __str_codecvt_out_all.
1974         * include/bits/locale_conv.h (__do_str_codecvt): Reorder static and
1975         runtime conditions.
1976         (__str_codecvt_out_all, __str_codecvt_in_all): New functions that
1977         return false for partial conversions.
1978         * include/experimental/bits/fs_path.h (u8path):
1979         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Implement correctly for mingw.
1980         [_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_wconvert): Add
1981         missing handling for char8_t. Use codecvt and codecvt_utf8_utf16
1982         instead of codecvt_utf8. Use __str_codecvt_in_all and
1983         __str_codecvt_out_all.
1984         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_convert): Use
1985         codecvt instead of codecvt_utf8. Use __str_codecvt_out_all.
1986         (path::string) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
1987         codecvt_utf8_utf16 instead of codecvt_utf8. Construct return values
1988         with allocator. Use __str_codecvt_out_all and __str_codecvt_in_all.
1989         (path::string) [!_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
1990         __str_codecvt_in_all.
1991         (path::u8string) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
1992         codecvt_utf8_utf16 instead of codecvt_utf8. Use __str_codecvt_out_all.
1993         * src/c++17/fs_path.cc (path::_S_convert_loc): Use
1994         __str_codecvt_in_all.
1995         * src/filesystem/path.cc (path::_S_convert_loc): Likewise.
1996         * testsuite/27_io/filesystem/path/construct/90281.cc: New test.
1997         * testsuite/27_io/filesystem/path/factory/u8path.cc: New test.
1998         * testsuite/27_io/filesystem/path/native/string.cc: Test with empty
1999         strings and with Unicode characters outside the basic multilingual
2000         plane.
2001         * testsuite/27_io/filesystem/path/native/alloc.cc: New test.
2002         * testsuite/experimental/filesystem/path/construct/90281.cc: New test.
2003         * testsuite/experimental/filesystem/path/factory/u8path.cc: New test.
2004         * testsuite/experimental/filesystem/path/native/alloc.cc: New test.
2005         * testsuite/experimental/filesystem/path/native/string.cc: Test with
2006         empty strings and with Unicode characters outside the basic
2007         multilingual plane.
2008
2009 2019-06-17  François Dumont  <fdumont@gcc.gnu.org>
2010             Jonathan Wakely  <jwakely@redhat.com>
2011
2012         * include/bits/hashtable.h (struct _Hashtable::_Scoped_node): New type.
2013         (_Hashtable::_M_insert_unique_node): Add key_type parameter. Don't
2014         deallocate node if insertion fails.
2015         (_Hashtable::_M_insert_multi_node): Likewise.
2016         (_Hashtable::_M_reinsert_node): Pass additional key argument.
2017         (_Hashtable::_M_reinsert_node_multi): Likewise. Remove FIXME.
2018         (_Hashtable::_M_extract_node(size_t, __node_base*)): New function.
2019         (_Hashtable::extract(const_iterator)): Use _M_extract_node.
2020         (_Hashtable::extract(const _Key&)): Likewise.
2021         (_Hashtable::_M_merge_unique): Pass additional key argument.
2022         (_Hashtable::_M_emplace<Args>(true_type, Args&&...)): Likewise. Use
2023         _Scoped_node.
2024         (_Hashtable::_M_insert): Likewise.
2025         * include/bits/hashtable_policy.h (_Map_base::operator[]): Likewise.
2026         (_Hashtable_alloc): Add comments to functions with misleading names.
2027
2028 2019-06-17  Jonathan Wakely  <jwakely@redhat.com>
2029
2030         * testsuite/20_util/bad_function_call/what.cc: Include <string> header
2031         for std::string.
2032         * testsuite/20_util/shared_ptr/cons/weak_ptr_expired.cc: Likewise.
2033         * testsuite/20_util/tuple/cons/allocator_with_any.cc: Include <memory>
2034         header for std::allocator.
2035         * testsuite/23_containers/array/tuple_interface/tuple_element.cc: Add
2036         using-declaration for std::size_t.
2037         * testsuite/23_containers/array/tuple_interface/tuple_size.cc:
2038         Likewise.
2039         * testsuite/23_containers/deque/cons/55977.cc: Include <istream> for
2040         std::istream.
2041         * testsuite/23_containers/vector/cons/55977.cc: Likewise.
2042         * testsuite/experimental/map/erasure.cc: Include <string> for
2043         std::string.
2044         * testsuite/experimental/unordered_map/erasure.cc: Likewise.
2045
2046 2019-06-14  Jonathan Wakely  <jwakely@redhat.com>
2047
2048         * include/experimental/type_traits (experimental::nonesuch): Use
2049         pragma to disable -Wctor-dtor-privacy warnings.
2050         * include/std/type_traits (__is_convertible_helper<From, To, false>)
2051         (__is_nt_convertible_helper<From, To, false>, __nonesuch): Likewise.
2052
2053         * include/std/version (__cpp_lib_bind_front): Add missing macro.
2054
2055 2019-06-12  Jonathan Wakely  <jwakely@redhat.com>
2056
2057         * include/std/algorithm (__cpp_lib_parallel_algorithm): Fix value.
2058         * include/std/memory (__cpp_lib_parallel_algorithm): Likewise.
2059         * include/std/numeric (__cpp_lib_parallel_algorithm): Likewise.
2060         * testsuite/25_algorithms/pstl/feature_test.cc: New test.
2061
2062         * include/std/variant (get<T>, get<N>, get_if<N>, get_if<T>)
2063         (variant::emplace): Change static_assert messages from "should be"
2064         to "must be".
2065         (hash<monostate>::operator()): Remove name of unused parameter.
2066
2067         * include/std/mutex (scoped_lock::~scoped_lock()): Use fold
2068         expression.
2069
2070         * include/Makefile.am: Add new <bits/charconv.h> header.
2071         * include/Makefile.in: Regenerate.
2072         * include/bits/basic_string.h (to_string(int), to_string(unsigned))
2073         (to_string(long), to_string(unsigned long), to_string(long long))
2074         (to_string(unsigned long long)): Rewrite to use __to_chars_10_impl.
2075         * include/bits/charconv.h: New header.
2076         (__detail::__to_chars_len): Move here from <charconv>.
2077         (__detail::__to_chars_10_impl): New function extracted from
2078         __detail::__to_chars_10.
2079         * include/std/charconv (__cpp_lib_to_chars): Add, but comment out.
2080         (__to_chars_unsigned_type): New class template that reuses
2081         __make_unsigned_selector_base::__select to pick a type.
2082         (__unsigned_least_t): Redefine as __to_chars_unsigned_type<T>::type.
2083         (__detail::__to_chars_len): Move to new header.
2084         (__detail::__to_chars_10): Add inline specifier. Move code doing the
2085         output to __detail::__to_chars_10_impl and call that.
2086         * include/std/version (__cpp_lib_to_chars): Add, but comment out.
2087         * testsuite/21_strings/basic_string/numeric_conversions/char/
2088         to_string.cc: Fix reference in comment. Remove unused variable.
2089         * testsuite/21_strings/basic_string/numeric_conversions/char/
2090         to_string_int.cc: New test.
2091
2092 2019-06-09  Edward Smith-Rowland  <3dw4rd@verizon.net>
2093
2094         Fix ConstexprIterator requirements tests - No constexpr algorithms!
2095         * testsuite/21_strings/basic_string_view/requirements/constexpr_iter.cc:
2096         Replace copy with hand-rolled loop.
2097         * testsuite/23_containers/array/requirements/constexpr_iter.cc:
2098         Ditto.
2099
2100 2019-06-08  Edward Smith-Rowland  <3dw4rd@verizon.net>
2101
2102         Test for C++20 p0858 - ConstexprIterator requirements.
2103         * testsuite/21_strings/basic_string_view/requirements/constexpr_iter.cc:
2104         New test.
2105         * testsuite/23_containers/array/requirements/constexpr_iter.cc:
2106         New test.
2107
2108 2019-06-07  Thomas Rodgers  <trodgers@redhat.com>
2109
2110         Rename PSTL macro's consistent with libstdc++ (and llvm upstream
2111         project) standards.
2112         * include/bits/c++config: Rename all macros of the form __PSTL* to
2113         _PSTL*.
2114         * include/std/algorithm: Likewise.
2115         * include/std/execution: Likewise.
2116         * include/std/numeric: Likewise.
2117         * include/std/memory: Likewise.
2118         * include/pstl/glue_memory_impl.h: Likewise.
2119         * include/pstl/numeric_impl.h: Likewise.
2120         * include/pstl/glue_memory_defs.h: Likewise.
2121         * include/pstl/execution_defs.h: Likewise.
2122         * include/pstl/utils.h: Likewise.
2123         * include/pstl/algorithm_fwd.h: Likewise.
2124         * include/pstl/unseq_backend_simd.h: Likewise.
2125         * include/pstl/glue_execution_defs.h: Likewise.
2126         * include/pstl/algorithm_impl.h: Likewise.
2127         * include/pstl/parallel_impl.h: Likewise.
2128         * include/pstl/memory_impl.h: Likewise.
2129         * include/pstl/glue_numeric_defs.h: Likewise.
2130         * include/pstl/parallel_backend_utils.h: Likewise.
2131         * include/pstl/glue_algorithm_defs.h: Likewise.
2132         * include/pstl/parallel_backend.h: Likewise.
2133         * include/pstl/glue_numeric_impl.h: Likewise.
2134         * include/pstl/parallel_backend_tbb.h: Likewise.
2135         * include/pstl/numeric_fwd.h: Likewise.
2136         * include/pstl/glue_algorithm_impl.h: Likewise.
2137         * include/pstl/execution_impl.h: Likewise.
2138         * include/pstl/pstl_config.h: Likewise.
2139         * testsuite/util/pstl/pstl_test_config.h: Likewise.
2140         * testsuite/util/pstl/test_utils.h: Likewise.
2141         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc:
2142         Likewise.
2143         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc:
2144         Likewise.
2145         * testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc:
2146         Likewise.
2147         * testsuite/26_numerics/pstl/numeric_ops/scan.cc: Likewise.
2148         * testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc: Likewise.
2149         * testsuite/26_numerics/pstl/numeric_ops/reduce.cc: Likewise.
2150         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc: Likewise.
2151         * testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc:
2152         Likewise.
2153         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc: Likewise.
2154         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc: Likewise.
2155         * testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc: Likewise.
2156         * testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc: Likewise.
2157         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc:
2158         Likewise.
2159         * testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc: Likewise.
2160         * testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc: Likewise.
2161         * testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc: Likewise.
2162         * testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc: Likewise.
2163         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc:
2164         Likewise.
2165         * testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: Likewise.
2166         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc: Likewise.
2167         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc:
2168         Likewise.
2169         * testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc:
2170         Likewise.
2171         * testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: Likewise.
2172         * testsuite/25_algorithms/pstl/alg_merge/merge.cc: Likewise.
2173         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc:
2174         Likewise.
2175         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc:
2176         Likewise.
2177         * testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc:
2178         Likewise.
2179         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc:
2180         Likewise.
2181         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc:
2182         Likewise.
2183         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc:
2184         Likewise.
2185         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc:
2186         Likewise.
2187         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc:
2188         Likewise.
2189         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc:
2190         Likewise.
2191         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc:
2192         Likewise.
2193         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc:
2194         Likewise.
2195         * testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc: Likewise.
2196
2197         Rename header guards to be consistent with upstream project's
2198         conventions.
2199         * include/pstl/glue_memory_impl.h: Rename all macros of the form
2200         _PSTL_(.*)_H to _PSTL_\U\1_H.
2201         * include/pstl/numeric_impl.h: Likewise.
2202         * include/pstl/glue_memory_defs.h: Likewise.
2203         * include/pstl/execution_defs.h: Likewise.
2204         * include/pstl/utils.h: Likewise.
2205         * include/pstl/algorithm_fwd.h: Likewise.
2206         * include/pstl/unseq_backend_simd.h: Likewise.
2207         * include/pstl/glue_execution_defs.h: Likewise.
2208         * include/pstl/algorithm_impl.h: Likewise.
2209         * include/pstl/parallel_impl.h: Likewise.
2210         * include/pstl/memory_impl.h: Likewise.
2211         * include/pstl/glue_numeric_defs.h: Likewise.
2212         * include/pstl/parallel_backend_utils.h: Likewise.
2213         * include/pstl/glue_algorithm_defs.h: Likewise.
2214         * include/pstl/parallel_backend.h: Likewise.
2215         * include/pstl/glue_numeric_impl.h: Likewise.
2216         * include/pstl/parallel_backend_tbb.h: Likewise.
2217         * include/pstl/numeric_fwd.h: Likewise.
2218         * include/pstl/glue_algorithm_impl.h: Likewise.
2219         * include/pstl/execution_impl.h: Likewise.
2220         * include/pstl/pstl_config.h: Likewise.
2221         * testsuite/util/pstl/pstl_test_config.h: Likewise.
2222
2223         Synchronize libstdc++ parallel algorithms with upstream
2224         project.
2225         * include/pstl/algorithm_fwd.h: Synchronize with
2226         upstream PSTL project.
2227         * include/pstl/algorithm_impl.h: Likewise.
2228         * include/pstl/execution_defs.h: Likewise.
2229         * include/pstl/execution_impl.h: Likewise.
2230         * include/pstl/glue_algorithm_impl.h: Likewise.
2231         * include/pstl/glue_execution_defs.h: Likewise.
2232         * include/pstl/numeric_fwd.h: Likewise.
2233         * include/pstl/numeric_impl.h: Likewise.
2234         * include/pstl/parallel_backend.h: Likewise.
2235         * include/pstl/pstl_config.h: Likewise.
2236         * include/pstl/unseq_backend_simd.h: Likewise.
2237         * include/pstl/parallel_backend_serial.h: New file.
2238         * include/Makefile.am (pstl_headers): Add
2239         parallel_backend_serial.h.
2240         * include/Makefile.in: Regenerate.
2241
2242         Clean up non-conforming names
2243         * include/pstl/algorithm_impl.h (__parallel_set_union_op):
2244         Uglfiy copy_range1 and copy_range2
2245         (__pattern_walk2_n): Rename local n to __n
2246         * include/pstl/parallel_backend_tbb.h (struct __binary_no_op):
2247         Rename parameter _T to _Tp.
2248
2249         Integrate non-TBB serial backend support
2250         * include/bits/c++config: Adjust TBB detection logic to select serial
2251         PSTL backend if no TBB present.
2252         * testsuite/utils/pstl/test_utils.h: Remove check for
2253         _PSTL_USE_PAR_POLICIES
2254
2255 2019-06-07  Jonathan Wakely  <jwakely@redhat.com>
2256
2257         * testsuite/24_iterators/container_access.cc: Move dg-options before
2258         dg-do directive so the target check uses the -std option.
2259
2260         PR libstdc++/90770
2261         * configure: Regenerate.
2262         * src/Makefile.am (stamp-debug): Also test for missing makefile.
2263         * src/Makefile.in: Regenerate.
2264
2265 2019-06-06  Jonathan Wakely  <jwakely@redhat.com>
2266
2267         * include/std/array: Do not include <stdexcept>.
2268         * include/std/optional: Include <exception> and
2269         <bits/exception_defines.h> instead of <stdexcept>.
2270         * testsuite/20_util/function_objects/searchers.cc: Include <cctype>
2271         for std::isalnum.
2272         * testsuite/20_util/tuple/cons/deduction.cc: Include <memory> for
2273         std::allocator.
2274         * testsuite/23_containers/map/erasure.cc: Include <string>.
2275         * testsuite/23_containers/unordered_map/erasure.cc: Likewise.
2276
2277         * testsuite/23_containers/deque/requirements/dr438/assign_neg.cc: Add
2278         dg-prune-output for different C++98 diagnostic.
2279         * testsuite/23_containers/deque/requirements/dr438/constructor_1_neg.cc:
2280         Likewise.
2281         * testsuite/23_containers/deque/requirements/dr438/constructor_2_neg.cc:
2282         Likewise.
2283         * testsuite/23_containers/deque/requirements/dr438/insert_neg.cc:
2284         Likewise.
2285         * testsuite/23_containers/list/requirements/dr438/assign_neg.cc:
2286         Likewise.
2287         * testsuite/23_containers/list/requirements/dr438/constructor_1_neg.cc:
2288         Likewise.
2289         * testsuite/23_containers/list/requirements/dr438/constructor_2_neg.cc:
2290         Likewise.
2291         * testsuite/23_containers/list/requirements/dr438/insert_neg.cc:
2292         Likewise.
2293         * testsuite/23_containers/vector/requirements/dr438/assign_neg.cc:
2294         Likewise.
2295         * testsuite/23_containers/vector/requirements/dr438/
2296         constructor_1_neg.cc: Likewise.
2297         * testsuite/23_containers/vector/requirements/dr438/
2298         constructor_2_neg.cc: Likewise.
2299         * testsuite/23_containers/vector/requirements/dr438/insert_neg.cc:
2300         Likewise.
2301         * testsuite/libstdc++-prettyprinters/compat.cc: Do not run for C++98.
2302
2303         * testsuite/23_containers/unordered_map/requirements/debug_container.cc:
2304         Do not test allocator rebinding extension for C++2a.
2305         * testsuite/23_containers/unordered_set/allocator/ext_ptr.cc: Change
2306         dg-do directive for C++17 and C++2a.
2307
2308         * testsuite/23_containers/deque/requirements/explicit_instantiation/
2309         1_c++0x.cc: Remove redundant test.
2310         * testsuite/23_containers/deque/requirements/explicit_instantiation/
2311         2.cc: Use target selector instead of preprocessor condition.
2312         * testsuite/23_containers/deque/requirements/explicit_instantiation/
2313         3.cc: Do not run test for C++2a.
2314         * testsuite/23_containers/forward_list/requirements/
2315         explicit_instantiation/3.cc: Likewise.
2316         * testsuite/23_containers/forward_list/requirements/
2317         explicit_instantiation/5.cc: Do not test allocator rebinding extension
2318         for C++2a.
2319         * testsuite/23_containers/list/requirements/explicit_instantiation/
2320         1_c++0x.cc: Remove redundant test.
2321         * testsuite/23_containers/list/requirements/explicit_instantiation/
2322         2.cc: Use target selector instead of preprocessor condition.
2323         * testsuite/23_containers/list/requirements/explicit_instantiation/
2324         3.cc: Do not run test for C++2a.
2325         * testsuite/23_containers/list/requirements/explicit_instantiation/
2326         5.cc: Do not test allocator rebinding extension for C++2a.
2327         * testsuite/23_containers/map/requirements/explicit_instantiation/
2328         1_c++0x.cc: Remove redundant test.
2329         * testsuite/23_containers/map/requirements/explicit_instantiation/
2330         2.cc: Adjust comment.
2331         * testsuite/23_containers/map/requirements/explicit_instantiation/
2332         3.cc: Do not run test for C++2a.
2333         * testsuite/23_containers/map/requirements/explicit_instantiation/
2334         5.cc: Do not test allocator rebinding extension for C++2a.
2335         * testsuite/23_containers/multimap/requirements/explicit_instantiation/
2336         1_c++0x.cc: Remove redundant test.
2337         * testsuite/23_containers/multimap/requirements/explicit_instantiation/
2338         3.cc: Do not run test for C++2a.
2339         * testsuite/23_containers/multimap/requirements/explicit_instantiation/
2340         5.cc: Do not test allocator rebinding extension for C++2a.
2341         * testsuite/23_containers/multiset/requirements/explicit_instantiation/
2342         3.cc: Do not run test for C++2a.
2343         * testsuite/23_containers/multiset/requirements/explicit_instantiation/
2344         5.cc: Do not test allocator rebinding extension for C++2a.
2345         * testsuite/23_containers/set/requirements/explicit_instantiation/3.cc:
2346         Do not run test for C++2a.
2347         * testsuite/23_containers/set/requirements/explicit_instantiation/
2348         1_c++0x.cc: Remove redundant test.
2349         * testsuite/23_containers/set/requirements/explicit_instantiation/5.cc:
2350         Do not test allocator rebinding extension for C++2a.
2351         * testsuite/23_containers/unordered_map/requirements/
2352         explicit_instantiation/3.cc: Likewise.
2353         * testsuite/23_containers/unordered_map/requirements/
2354         explicit_instantiation/5.cc: Do not test allocator rebinding extension
2355         for C++2a.
2356         * testsuite/23_containers/unordered_multimap/requirements/
2357         explicit_instantiation/3.cc: Do not run test for C++2a.
2358         * testsuite/23_containers/unordered_multimap/requirements/
2359         explicit_instantiation/5.cc: Do not test allocator rebinding extension
2360         for C++2a.
2361         * testsuite/23_containers/unordered_multiset/requirements/
2362         explicit_instantiation/3.cc: Do not run test for C++2a.
2363         * testsuite/23_containers/unordered_multiset/requirements/
2364         explicit_instantiation/5.cc: Do not test allocator rebinding extension
2365         for C++2a.
2366         * testsuite/23_containers/unordered_set/requirements/
2367         explicit_instantiation/3.cc: Do not run test for C++2a.
2368         * testsuite/23_containers/unordered_set/requirements/
2369         explicit_instantiation/5.cc: Do not test allocator rebinding extension
2370         for C++2a.
2371         * testsuite/23_containers/vector/ext_pointer/explicit_instantiation/
2372         2.cc: Remove redundant test.
2373         * testsuite/23_containers/vector/ext_pointer/explicit_instantiation/
2374         3.cc: Do not run test for C++2a.
2375         * testsuite/23_containers/vector/requirements/explicit_instantiation/
2376         3.cc: Likewise.
2377
2378         * include/std/type_traits (is_empty, is_polymorphic, is_final)
2379         (is_abstract, is_aggregate): Remove static_assert.
2380         * testsuite/20_util/is_abstract/incomplete_neg.cc: Check for error
2381         from builtin only.
2382         * testsuite/20_util/is_aggregate/incomplete_neg.cc: Likewise. Add
2383         missing -std=gnu++17 option.
2384         * testsuite/20_util/is_empty/incomplete_neg.cc: New test.
2385         * testsuite/20_util/is_final/incomplete_neg.cc: New test.
2386         * testsuite/20_util/is_polymorphic/incomplete_neg.cc: Check for error
2387         from builtin only.
2388
2389         * testsuite/18_support/set_terminate.cc: Do not run for C++98 mode.
2390         * testsuite/18_support/set_unexpected.cc: Likewise.
2391         * testsuite/20_util/is_nothrow_invocable/value.cc: Test converting to
2392         void.
2393         * testsuite/20_util/is_nothrow_invocable/value_ext.cc: Fix constexpr
2394         function to be valid in C++11.
2395         * testsuite/26_numerics/complex/proj.cc: Do not run for C++98 mode.
2396         * testsuite/experimental/names.cc: Do not run for C++98 mode. Do not
2397         include Library Fundamentals or Networking headers in C++11 mode.
2398         * testsuite/ext/char8_t/atomic-1.cc: Do not run for C++98 mode.
2399
2400         * include/std/tuple (_TC): Replace with _TupleConstraints.
2401         (_TupleConstraints): New helper for SFINAE constraints, with more
2402         expressive member functions to reduce duplication when used.
2403         (tuple::_TC2, tuple::_TMC, tuple::_TNTC): Remove.
2404         (tuple::_TCC): Replace dummy type parameter with bool non-type
2405         parameter that can be used to check the pack size.
2406         (tuple::_ImplicitDefaultCtor, tuple::_ExplicitDefaultCtor)
2407         (tuple::_ImplicitCtor, tuple::_ExplicitCtor): New alias templates for
2408         checking constraints in constructors.
2409         (tuple::__valid_args, tuple::_UseOtherCtor, tuple::__use_other_ctor):
2410         New SFINAE helpers.
2411         (tuple::tuple): Use new helpers to reduce repitition in constraints.
2412         (tuple::tuple(allocator_arg_t, const Alloc&)): Constrain.
2413         (tuple<T1, T2>::_TCC, tuple<T1, T2>::_ImplicitDefaultCtor)
2414         (tuple<T1, T2>::_ExplicitDefaultCtor, tuple<T1, T2>::_ImplicitCtor)
2415         (tuple<T1, T2>::_ExplicitCtor): New alias templates for checking
2416         constraints in constructors.
2417         (tuple::__is_alloc_arg()): New SFINAE helpers.
2418         (tuple<T1, T2>::tuple): Use new helpers to reduce repitition in
2419         constraints.
2420         (tuple<T1, T2>::tuple(allocator_arg_t, const Alloc&)): Constrain.
2421         * testsuite/20_util/tuple/cons/90700.cc: New test.
2422         * testsuite/20_util/tuple/cons/allocators.cc: Add default constructor
2423         to meet new constraint on allocator-extended default constructor.
2424
2425 2019-06-03  Jonathan Wakely  <jwakely@redhat.com>
2426
2427         * include/bits/stl_map.h (map): Disable static assert for C++98 mode.
2428         * include/bits/stl_multimap.h (multimap): Likewise.
2429
2430 2019-06-03  François Dumont  <fdumont@gcc.gnu.org>
2431
2432         Rename variables and cleanup comments.
2433         * include/bits/hashtable_policy.h
2434         * include/bits/hashtable.h
2435
2436 2019-06-03  Jonathan Wakely  <jwakely@redhat.com>
2437
2438         * doc/xml/manual/status_cxx2020.xml: Add missing row for P0920R2.
2439         Fix bgcolor for P0340R3.
2440         * doc/html/*: Regenerate.
2441
2442         PR libstdc++/90686
2443         * doc/xml/manual/status_cxx2014.xml: Document what's missing from
2444         <experimental/memory_resource>.
2445         * doc/xml/manual/status_cxx2020.xml: Document status of P1285R0,
2446         P0339R6, P0340R3, P1164R1 and P1357R1.
2447         * doc/html/*: Regenerate.
2448
2449         * doc/xml/manual/status_cxx2020.xml: Document P1463R1 status.
2450         * include/bits/forward_list.h [__cplusplus > 201703]: Enable
2451         allocator::value_type assertion for C++2a.
2452         * include/bits/hashtable.h: Likewise.
2453         * include/bits/stl_deque.h: Likewise.
2454         * include/bits/stl_list.h: Likewise.
2455         * include/bits/stl_map.h: Likewise.
2456         * include/bits/stl_multimap.h: Likewise.
2457         * include/bits/stl_multiset.h: Likewise.
2458         * include/bits/stl_set.h: Likewise.
2459         * include/bits/stl_vector.h: Likewise.
2460         * testsuite/23_containers/deque/48101-3_neg.cc: New test.
2461         * testsuite/23_containers/forward_list/48101-3_neg.cc: New test.
2462         * testsuite/23_containers/list/48101-3_neg.cc: New test.
2463         * testsuite/23_containers/map/48101-3_neg.cc: New test.
2464         * testsuite/23_containers/multimap/48101-3_neg.cc: New test.
2465         * testsuite/23_containers/multiset/48101-3_neg.cc: New test.
2466         * testsuite/23_containers/set/48101-3_neg.cc: New test.
2467         * testsuite/23_containers/unordered_map/48101-3_neg.cc: New test.
2468         * testsuite/23_containers/unordered_multimap/48101-3_neg.cc: New test.
2469         * testsuite/23_containers/unordered_multiset/48101-3_neg.cc: New test.
2470         * testsuite/23_containers/unordered_set/48101-3_neg.cc: New test.
2471         * testsuite/23_containers/vector/48101-3_neg.cc: New test.
2472
2473 2019-05-31  Gerald Pfeifer  <gerald@pfeifer.com>
2474
2475         * doc/xml/manual/allocator.xml: Move hoard.org back to http.
2476
2477 2019-05-31  Jonathan Wakely  <jwakely@redhat.com>
2478
2479         * include/std/tuple (tuple<>): Add noexcept to allocator-extended
2480         constructors.
2481         (tuple<T1, T2>::__nothrow_default_constructible()): New helper
2482         function.
2483         (tuple<T1, T2>::tuple(), explicit tuple<T1, T2>::tuple()): Use helper.
2484
2485 2019-05-31  Jonathan Wakely  <jwakely@redhat.com>
2486
2487         * src/c++98/bitmap_allocator.cc: Add using-declaration for size_t.
2488
2489         PR libstdc++/90682
2490         * libsupc++/eh_term_handler.cc: Include eh_term_handler.h to get
2491         definition of _GLIBCXX_DEFAULT_TERM_HANDLER.
2492         * libsupc++/eh_term_handler.h: New header defining
2493         _GLIBCXX_DEFAULT_TERM_HANDLER.
2494         * libsupc++/eh_terminate.cc: Include eh_term_handler.h.
2495         (set_terminate): Restore default handler when argument is null.
2496         (set_unexpected): Likewise.
2497         * testsuite/18_support/set_terminate.cc: New test.
2498         * testsuite/18_support/set_unexpected.cc: New test.
2499
2500         * include/backward/hashtable.h (size_t, ptrdiff_t)
2501         (forward_iterator_tag, input_iterator_tag, _Construct, _Destroy)
2502         (distance, vector, pair, __iterator_category): Remove
2503         using-declarations that add these names to namespace __gnu_cxx.
2504         * include/ext/bitmap_allocator.h (size_t, ptrdiff_t): Likewise.
2505         * include/ext/debug_allocator.h (size_t): Likewise.
2506         * include/ext/functional (size_t, unary_function, binary_function)
2507         (mem_fun1_t, const_mem_fun1_t, mem_fun1_ref_t, const_mem_fun1_ref_t):
2508         Likewise.
2509         * include/ext/malloc_allocator.h (size_t, ptrdiff_t): Likewise.
2510         * include/ext/memory (ptrdiff_t, pair, __iterator_category): Likewise.
2511         * include/ext/mt_allocator.h (size_t, ptrdiff_t): Likewise.
2512         * include/ext/new_allocator.h (size_t, ptrdiff_t): Likewise.
2513         * include/ext/numeric (iota): Fix outdated comment.
2514         * include/ext/pool_allocator.h (size_t, ptrdiff_t): Likewise.
2515         * include/ext/rb_tree (_Rb_tree, allocator): Likewise.
2516         * include/ext/rope (size_t, ptrdiff_t, allocator, _Destroy): Likewise.
2517         * include/ext/ropeimpl.h (size_t, printf, basic_ostream)
2518         (__throw_length_error, _Destroy, std::__uninitialized_fill_n_a):
2519         Likewise.
2520         * include/ext/slist (size_t, ptrdiff_t, _Construct, _Destroy)
2521         (allocator, __true_type, __false_type): Likewise.
2522
2523 2019-05-31  Antony Polukhin  <antoshkka@gmail.com>
2524
2525         PR libstdc++/71579
2526         * include/std/type_traits __type_identity, __is_complete_or_unbounded):
2527         New helpers for checking preconditions in traits.
2528         (is_trivial, is_trivially_copyable, is_standard_layout, is_pod)
2529         (is_literal_type, is_empty, is_polymorphic, is_final, is_abstract)
2530         (is_destructible, is_nothrow_destructible, is_constructible)
2531         (is_default_constructible, is_copy_constructible)
2532         (is_move_constructible, is_nothrow_default_constructible)
2533         (is_nothrow_constructible, is_nothrow_copy_constructible)
2534         (is_nothrow_move_constructible, is_copy_assignable, is_move_assignable)
2535         (is_nothrow_assignable, is_nothrow_copy_assignable)
2536         (is_nothrow_move_assignable, is_trivially_constructible)
2537         (is_trivially_copy_constructible, is_trivially_move_constructible)
2538         is_trivially_assignable, is_trivially_copy_assignable)
2539         (is_trivially_move_assignable, is_trivially_destructible)
2540         (alignment_of, is_swappable, is_nothrow_swappable, is_invocable)
2541         (is_invocable_r, is_nothrow_invocable)
2542         (has_unique_object_representations, is_aggregate): Add static_asserts
2543         to make sure that type traits are not misused with incomplete types.
2544         (__is_constructible_impl, __is_nothrow_default_constructible_impl)
2545         (__is_nothrow_constructible_impl, __is_nothrow_assignable_impl): New
2546         base characteristics without assertions that can be reused in other
2547         traits.
2548         * testsuite/20_util/is_complete_or_unbounded/memoization.cc: New test.
2549         * testsuite/20_util/is_complete_or_unbounded/memoization_neg.cc: New
2550         test.
2551         * testsuite/20_util/is_complete_or_unbounded/value.cc: New test.
2552         * testsuite/20_util/is_abstract/incomplete_neg.cc: New test.
2553         * testsuite/20_util/is_aggregate/incomplete_neg.cc: New test.
2554         * testsuite/20_util/is_class/value.cc: Check incomplete type.
2555         * testsuite/20_util/is_function/value.cc: Likewise.
2556         * testsuite/20_util/is_move_constructible/incomplete_neg.cc: New test.
2557         * testsuite/20_util/is_nothrow_move_assignable/incomplete_neg.cc: New
2558         test.
2559         * testsuite/20_util/is_polymorphic/incomplete_neg.cc: New test.
2560         * testsuite/20_util/is_reference/value.cc: Check incomplete types.
2561         * testsuite/20_util/is_unbounded_array/value.cc: Likewise.
2562         * testsuite/20_util/is_union/value.cc: Likewise.
2563         * testsuite/20_util/is_void/value.cc: Likewise.
2564         * testsuite/util/testsuite_tr1.h: Add incomplete union type.
2565
2566 2019-05-31  Jonathan Wakely  <jwakely@redhat.com>
2567
2568         * include/bits/random.h (random_device::_M_init(const char*, size_t)):
2569         Add new private member function.
2570         * src/c++11/cow-string-inst.cc (random_device::_M_init(const string&))
2571         (random_device::_M_init_pretr1(const string&)): Call new private
2572         member with string data.
2573         * src/c++11/random.cc (random_device::_M_init(const char*, size_t)):
2574         Define.
2575         * testsuite/26_numerics/random/random_device/cons/default-cow.cc: New
2576         test using COW strings.
2577         * testsuite/26_numerics/random/random_device/cons/default.cc: Generate
2578         a value from the device.
2579         * testsuite/26_numerics/random/random_device/cons/token.cc: Likewise.
2580         Fix typo in token string.
2581
2582 2019-05-30  Nina Dinka Ranns  <dinka.ranns@gmail.com>
2583
2584         LWG2788 basic_string spurious use of a default constructible allocator
2585         * include/bits/basic_string.tcc [_GLIBCXX_USE_CXX11_ABI]
2586         (basic_string::_M_replace_dispatch): Construct temporary string with
2587         the current allocator.
2588         * testsuite/21_strings/basic_string/allocator/char/lwg2788.cc: New.
2589         * testsuite/21_strings/basic_string/allocator/wchar_t/lwg2788.cc: New.
2590
2591 2019-05-30  Jonathan Wakely  <jwakely@redhat.com>
2592
2593         * doc/xml/manual/diagnostics.xml: Update list of headers that define
2594         exception classes.
2595         * doc/xml/manual/support.xml: Rewrite advice around NULL. Rewrite
2596         section about new/delete overloads. Improve section on verbose
2597         terminate handler.
2598         * doc/html/*: Regenerate.
2599
2600         * doc/xml/manual/status_cxx2020.xml: Add feature-test macro for
2601         P0811R3. Change status of P1353R0.
2602         * doc/html/*: Regenerate.
2603
2604         * doc/xml/manual/status_cxx2011.xml: Use <variablelist> for
2605         documentation of implementation-defined types for [thread.req.native].
2606         * doc/xml/manual/status_cxx2017.xml: Update documentation of
2607         implementation-defined strings for [variant.bad.access]. Fix typo in
2608         documentation of implementation-defined support for [fs.conform.9945].
2609         * doc/html/*: Regenerate.
2610
2611 2019-05-29  Jonathan Wakely  <jwakely@redhat.com>
2612
2613         PR libstdc++/85494
2614         * testsuite/26_numerics/random/random_device/cons/token.cc: Fix test
2615         that fails on mingw-w64.
2616
2617         PR libstdc++/88881
2618         * src/c++17/fs_ops.cc [_GLIBCXX_FILESYSTEM_IS_WINDOWS]
2619         (status(const path&, error_code&)): Use parent_path() to remove
2620         trailing slash.
2621         (symlink_status(const path&, error_code&)): Duplicate workaround for
2622         bug in _wstat for paths with trailing slash.
2623         * testsuite/27_io/filesystem/operations/remove_all.cc: Check path
2624         with trailing slash.
2625         * testsuite/27_io/filesystem/operations/status.cc: Likewise.
2626         * testsuite/27_io/filesystem/operations/symlink_status.cc: Likewise.
2627
2628         * src/c++17/fs_path.cc (path::parent_path()): Create whole path at
2629         once instead of building it iteratively.
2630
2631         * testsuite/util/testsuite_api.h: Remove names of unused parameters.
2632
2633         PR libstdc++/85494 use rdseed and rand_s in std::random_device
2634         * acinclude.m4 (GLIBCXX_CHECK_X86_RDSEED): Define macro to check if
2635         the assembler supports rdseed.
2636         * config.h.in: Regenerate.
2637         * configure: Regenerate.
2638         * configure.ac: Use GLIBCXX_CHECK_X86_RDSEED.
2639         * config/os/mingw32-w64/os_defines.h (_GLIBCXX_USE_CRT_RAND_S): Define.
2640         * doc/html/*: Regenerate.
2641         * doc/xml/manual/status_cxx2011.xml: Document new tokens.
2642         * include/bits/random.h (random_device::random_device()): Always call
2643         _M_init rather than _M_init_pretr1.
2644         (random_device::random_device(const string&)): Likewise.
2645         (random_device::operator()()): Always call _M_getval().
2646         (random_device::_M_file): Replace first member of union with an
2647         anonymous struct, with _M_file as its first member.
2648         * src/c++11/random.cc [_GLIBCXX_X86_RDRAND] (USE_RDRAND): Define.
2649         [_GLIBCXX_X86_RDSEED] (USE_RDSEED): Define.
2650         (USE_MT19937): Define if none of the above are defined.
2651         (USE_POSIX_FILE_IO): Define.
2652         (_M_strtoul): Remove.
2653         [USE_RDSEED] (__x86_rdseed): Define new function.
2654         [_GLIBCXX_USE_CRT_RAND_S] (__winxp_rand_s): Define new function.
2655         (random_device::_M_init(const string&)): Initialize new union members.
2656         Add support for "rdseed" and "rand_s" tokens. Decide what the
2657         "default" token does according to which USE_* macros are defined.
2658         [USE_POSIX_FILE_IO]: Store a file descriptor.
2659         [USE_MT19937]: Forward to _M_init_pretr1 instead.
2660         (random_device::_M_init_pretr1(const string&)) [USE_MT19937]: Inline
2661         code from _M_strtoul.
2662         [!USE_MT19937]: Call _M_init, transforming the old default token or
2663         numeric tokens to "default".
2664         (random_device::_M_fini()) [USE_POSIX_FILE_IO]: Use close not fclose.
2665         (random_device::_M_getval()): Use new union members to obtain a
2666         random number from the stored function pointer or file descriptor.
2667         [USE_MT19937]: Obtain a value from the mt19937 engine.
2668         (random_device::_M_getval_pretr1()): Call _M_getval().
2669         (random_device::_M_getentropy()) [USE_POSIX_FILE_IO]: Use _M_fd
2670         instead of fileno.
2671         [!USE_MT19937] (mersenne_twister): Do not instantiate when not needed.
2672         * testsuite/26_numerics/random/random_device/85494.cc: New test.
2673
2674 2019-05-28  Jonathan Wakely  <jwakely@redhat.com>
2675
2676         PR libstdc++/90634
2677         * include/experimental/bits/fs_path.h (path::path(path&&)): Only call
2678         _M_split_cmpts() for a path with multiple components.
2679         (path::_S_is_dir_sep()): Add missing 'static' keyword to function.
2680         * src/filesystem/path.cc (path::_M_split_cmpts()): Count number of
2681         components and reserve space in vector. Return early when there is
2682         only one component.
2683         * testsuite/27_io/filesystem/path/construct/90634.cc: New test.
2684         * testsuite/experimental/filesystem/path/construct/90634.cc: New test.
2685
2686         * testsuite/util/testsuite_fs.h (compare_paths): Use three-argument
2687         form of std::equals for C++11 compatibility.
2688
2689 2019-05-26  Gerald Pfeifer  <gerald@pfeifer.com>
2690
2691         * doc/xml/manual/appendix_contributing.xml: Update pointer to
2692         C++ standard at ansi.org.
2693
2694 2019-05-24  Jonathan Wakely  <jwakely@redhat.com>
2695
2696         * include/std/numeric (midpoint(T*, T*)): Fix incorrect result.
2697         * testsuite/26_numerics/midpoint/pointer.cc: Change "compile" test
2698         to "run".
2699
2700         * testsuite/20_util/shared_ptr/cons/alias-rval.cc: Fix test.
2701         * testsuite/20_util/shared_ptr/cons/alias.cc: Remove unused function.
2702
2703 2019-05-23  Jonathan Wakely  <jwakely@redhat.com>
2704
2705         * testsuite/20_util/function_objects/invoke/1.cc: Move C++17-specific
2706         tests to ...
2707         * testsuite/20_util/function_objects/invoke/3.cc: New test.
2708         * testsuite/23_containers/unordered_set/allocator/ext_ptr.cc: Change
2709         "compile" test to "run".
2710
2711         * doc/xml/manual/intro.xml: Document LWG DR 2996 change.
2712         * doc/html/*: Regenerate.
2713         * include/bits/shared_ptr.h (shared_ptr(shared_ptr&&, T*)): Add
2714         rvalue aliasing constructor.
2715         (static_pointer_cast, const_pointer, dynamic_pointer_cast)
2716         (reinterpret_pointer_cast): Add overloads taking rvalues.
2717         * include/bits/shared_ptr_base.h (__shared_ptr(__shared_ptr&&, T*)):
2718         Add rvalue aliasing constructor.
2719         * testsuite/20_util/shared_ptr/casts/1.cc: Change "compile" test to
2720         "run" and check return values as well as types.
2721         * testsuite/20_util/shared_ptr/casts/reinterpret.cc: Likewise.
2722         * testsuite/20_util/shared_ptr/casts/rval.cc: New test.
2723         * testsuite/20_util/shared_ptr/cons/alias-rval.cc: New test.
2724         * testsuite/20_util/shared_ptr/cons/alias.cc: Remove unused return
2725         values.
2726
2727         * doc/xml/manual/evolution.xml: Document LWG DR 2921 change.
2728         * doc/xml/manual/intro.xml: Likewise.
2729         * include/std/future (__create_task_state): Add default arguments
2730         to make providing an allocator optional.
2731         (packaged_task::packaged_task(F&&)): Call __create_task_state directly
2732         instead of delegating to another constructor.
2733         (packaged_task::packaged_task(allocator_arg_t, const A&, ...)): Do not
2734         define allocator-extended constructors for C++17 and later.
2735         * testsuite/30_threads/packaged_task/cons/alloc.cc: Only run test for
2736         C++11 and C++14.
2737         * testsuite/30_threads/packaged_task/cons/alloc2.cc: Likewise.
2738         * testsuite/30_threads/packaged_task/cons/alloc_min.cc: Likewise.
2739         * testsuite/30_threads/packaged_task/uses_allocator.cc: Likewise.
2740
2741 2019-05-23  Hans-Peter Nilsson  <hp@axis.com>
2742
2743         * testsuite/26_numerics/random/poisson_distribution/operators/values.cc:
2744         Don't run the libstdc++/83237 part on simulator targets.
2745
2746 2019-05-23  Jonathan Wakely  <jwakely@redhat.com>
2747
2748         * doc/xml/manual/status_cxx2017.xml: Add feature test macro for
2749         P0040R3.
2750         * doc/html/*: Regenerate.
2751
2752         * include/experimental/any (__any_caster): Use RTTI if comparing
2753         addresses fails, to support non-unique addresses in shared libraries.
2754         * include/std/any (__any_caster): Likewise.
2755
2756         PR libstdc++/90220
2757         * include/experimental/any (__any_caster): Constrain to only be
2758         callable for object types. Use remove_cv_t instead of decay_t.
2759         If the type decays or isn't copy constructible, compare the manager
2760         function to a dummy specialization.
2761         (__any_caster): Add overload constrained for non-object types.
2762         (any::_Manager_internal<_Op>): Add dummy specialization.
2763         * testsuite/experimental/any/misc/any_cast.cc: Test function types
2764         and array types.
2765
2766 2019-05-22  Jonathan Wakely  <jwakely@redhat.com>
2767
2768         PR libstdc++/90557
2769         * src/c++17/fs_path.cc (path::_List::operator=(const _List&)): Fix
2770         reversed arguments to uninitialized_copy_n.
2771         * testsuite/27_io/filesystem/path/assign/copy.cc: Check that source
2772         is unchanged by copy assignment.
2773         * testsuite/util/testsuite_fs.h (compare_paths): Use std::equal to
2774         compare path components.
2775
2776         PR libstdc++/77691
2777         * include/experimental/memory_resource: Add system header pragma and
2778         do not define anything unless compiled as C++14 or later.
2779         (__resource_adaptor_common::__guaranteed_alignment): Remove.
2780         (__resource_adaptor_imp::do_allocate): If the requested alignment
2781         is a fundamental alignment then either allocate directly from _M_alloc
2782         or call the new _M_allocate function.
2783         (__resource_adaptor_imp::do_deallocate): Likewise for deallocation.
2784         (__resource_adaptor_imp::_M_allocate): New function that uses a copy
2785         of the allocator rebound to a POD type with the specified alignment.
2786         (__resource_adaptor_imp::_M_deallocate): Likewise for deallocation.
2787         * testsuite/experimental/memory_resource/new_delete_resource.cc:
2788         Adjust expected allocation sizes.
2789         * testsuite/experimental/memory_resource/resource_adaptor.cc: Remove
2790         xfail for Solaris x86.
2791
2792 2019-05-21  Thomas Rodgers  <trodgers@redhat.com>
2793
2794         LWG 3062 - Unnecessary decay_t in is_execution_policy_v
2795         * include/pstl/execution_defs.h (__enable_if_execution_policy):
2796         Use std::__remove_cvref_t when building with GCC.
2797
2798 2019-05-21  Jonathan Wakely  <jwakely@redhat.com>
2799
2800         PR libstdc++/90252
2801         * testsuite/lib/libstdc++.exp (check_effective_target_tbb-backend):
2802         Use "additional_flags" to pass -ltbb to v3_target_compile command.
2803         Use check_v3_target_prop_cached to cache the result of the test.
2804
2805         * doc/xml/manual/shared_ptr.xml: Fix names of lock policy constants.
2806
2807 2019-05-20  Thomas Rodgers  <trodgers@redhat.com>
2808
2809         PR libstdc++/90252
2810         * testsuite/lib/libstdc++.exp (check_effective_target_tbb-backend):
2811         Changed v3_target_compile check from preprocess to executable.
2812         Added "-ltbb" to v3_target_compile flags.
2813
2814 2019-05-20  Thomas Rodgers  <trodgers@redhat.com>
2815
2816         * testsuite/lib/libstdc++.exp (check_effective_target_tbb-backend):
2817         Add check for Thread Building Blocks 2018 or later.
2818
2819 2019-05-20  Jonathan Wakely  <jwakely@redhat.com>
2820
2821         * testsuite/experimental/names.cc: Only include Networking TS headers
2822         on targets with the necessary Gthreads support.
2823
2824 2019-05-20  Marek Polacek  <polacek@redhat.com>
2825
2826         CWG 2094 - volatile scalars are trivially copyable.
2827         PR c++/85679
2828         * testsuite/20_util/is_trivially_copyable/value.cc: Change the expected
2829         result for volatile int.
2830
2831 2019-05-20  Jonathan Wakely  <jwakely@redhat.com>
2832
2833         * testsuite/17_intro/names.cc: Do not check 'ptr' on Solaris.
2834         * testsuite/experimental/names.cc: Include <experimental/filesystem>
2835         conditionally.
2836
2837         PR c++/90532 Ensure __is_constructible(T[]) is false
2838         * include/std/type_traits (__do_is_default_constructible_impl)
2839         (__is_default_constructible_atom, __is_default_constructible_safe):
2840         Remove.
2841         (is_default_constructible): Use is_constructible.
2842         * testsuite/20_util/is_constructible/value.cc: Check int[] case.
2843         * testsuite/20_util/is_default_constructible/value.cc: Likewise.
2844         * testsuite/20_util/is_trivially_constructible/value.cc: Likewise.
2845         * testsuite/20_util/is_trivially_default_constructible/value.cc:
2846         Likewise.
2847
2848 2019-05-20  Pádraig Brady  <pbrady@fb.com>
2849
2850         * libstdc++-v3/include/ext/new_allocator.h (deallocate): Pass the size
2851         to the deallocator with -fsized-deallocation.
2852
2853 2019-05-20  Jonathan Wakely  <jwakely@redhat.com>
2854
2855         * testsuite/experimental/memory_resource/new_delete_resource.cc: Fix
2856         test by passing correct alignment to deallocate function.
2857
2858 2019-05-18  Jonathan Wakely  <jwakely@redhat.com>
2859
2860         PR libstdc++/90520
2861         * python/libstdcxx/v6/printers.py (UniquePointerPrinter.__init__):
2862         Raise exception if unique_ptr tuple member has unknown structure.
2863         * python/libstdcxx/v6/xmethods.py (UniquePtrGetWorker.__call__):
2864         Adjust worker to support new __uniq_ptr_data base class. Do not
2865         assume field called _M_head_impl is the first tuple element.
2866
2867 2019-05-17  François Dumont  <fdumont@gcc.gnu.org>
2868
2869         * include/bits/stl_deque.h
2870         (_Deque_iterator<>::__ptr_to): Remove, use std::__ptr_rebind.
2871         (_Deque_base(_Deque_base&&, const allocator_type&)): New.
2872         (_Deque_base::_Deque_impl_data): New.
2873         (_Deque_base::_Deque_impl): Inherit latter.
2874         (_Deque_base::_Deque_impl::_M_swap_data): Move...
2875         (_Deque_base::_Deque_impl_data::_M_swap_data): ... here.
2876         (_Deque_base::_Deque_impl()): Add noexcept qualification.
2877         (_Deque_base::_Deque_impl(_Deque_impl&&, _Tp_alloc_type&&)): New.
2878         (_Deque_base::_Deque_impl::_M_get_Tp_allocator()): Remove static_cast.
2879         (deque<>::deque()): Default.
2880         (deque<>::deque(deque&&)): Default.
2881         (deque<>::deque(deque&&, const allocator_type&, false_type)): New.
2882         (deque<>::deque(deque&&, const allocator_type&, true_type)): New.
2883         (deque<>::deque(deque&&, const allocator_type&)): Delegate to latters.
2884         (deque<>::deque<_It>(_It, _It, const allocator_type&)): Use
2885         _M_range_initialize.
2886         (deque<>::assign<_It>(_It, _It)): Use _M_assign_aux.
2887         (deque<>::resize(size_type, const value_type&)): Share a single
2888         implementation.
2889         (deque<>::insert<_It>(const_iterator, _It, _It)): Use
2890         _M_range_insert_aux.
2891         [__cplusplus >= 201103L](_M_initialize_dispatch): Remove.
2892         [__cplusplus >= 201103L](_M_assign_dispatch): Remove.
2893         [__cplusplus >= 201103L](_M_insert_dispatch): Remove.
2894         * testsuite/23_containers/deque/allocator/default_init.cc: New.
2895
2896 2019-05-17  Jonathan Wakely  <jwakely@redhat.com>
2897
2898         PR libstdc++/90246
2899         * include/std/variant (holds_alternative, get, get_if): Improve
2900         static assertion messages.
2901         (bad_variant_access::bad_variant_access()): Change default message.
2902         (__throw_bad_variant_access(bool)): New overload.
2903         (get): Use new overload.
2904         (visit, visit<R>): Improve exception message.
2905
2906         * testsuite/20_util/variant/compile.cc: Fix narrowing test for ILP32
2907         targets. Add more cases from P0608R3.
2908         * testsuite/20_util/variant/run.cc: Add more cases from P0608R3.
2909
2910         * include/bits/random.h (seed_seq::param): Fix non-reserved name.
2911         * include/experimental/type_traits (is_detected_exact)
2912         (is_detected_exact_v): Likewise.
2913         * include/pstl/execution_defs.h (is_execution_policy)
2914         (is_execution_policy_v, __enable_if_execution_policy): Likewise.
2915         * include/pstl/execution_impl.h (__policy_traits): Likewise.
2916         * testsuite/17_intro/names.cc: Check for more non-reserved names.
2917         * testsuite/experimental/names.cc: New test.
2918
2919         PR libstdc++/85965
2920         * include/bits/hashtable.h (_Hashtable::~_Hashtable()): Remove static
2921         assertions from the destructor.
2922         * include/bits/hashtable_policy.h (_Hash_code_base::_M_hash_code):
2923         Move static_assert for hash function to here.
2924         (_Hash_table_base::_M_equals): Move static_assert for equality
2925         predicate to here.
2926         * include/bits/stl_tree.h (_Rb_tree::_S_value(_Const_Link_type)):
2927         Remove.
2928         (_Rb_tree::_S_key(_Const_Link_type)): Move assertions here. Access
2929         the value directly instead of calling _S_value.
2930         (_Rb_tree::_S_value(_Const_Base_ptr)): Remove.
2931         (_Rb_tree::_S_key(_Const_Base_ptr)): Do downcast and forward to
2932         _S_key(_Const_Link_type).
2933         * testsuite/23_containers/set/85965.cc: Check construction,
2934         destruction, assignment and size() do not trigger the assertions.
2935         * testsuite/23_containers/unordered_set/85965.cc: Likewise.
2936         * testsuite/23_containers/map/48101_neg.cc: Call find and adjust
2937         expected errors.
2938         * testsuite/23_containers/multimap/48101_neg.cc: Likewise.
2939         * testsuite/23_containers/multiset/48101_neg.cc: Likewise.
2940         * testsuite/23_containers/set/48101_neg.cc: Likewise.
2941         * testsuite/23_containers/unordered_map/48101_neg.cc: Likewise.
2942         * testsuite/23_containers/unordered_multimap/48101_neg.cc: Likewise.
2943         * testsuite/23_containers/unordered_multiset/48101_neg.cc: Likewise.
2944         * testsuite/23_containers/unordered_set/48101_neg.cc: Likewise.
2945
2946         * include/bits/invoke.h [__cplusplus < 201703L] (__invoke_r<void>):
2947         Use _GLIBCXX14_CONSTEXPR because void functions cannot be constexpr
2948         in C++11.
2949
2950         * doc/xml/manual/status_cxx2020.xml: Update P0608R3, P0777R1, and
2951         P1165R1 entries.
2952         * doc/html/*: Regenerate.
2953         * include/std/tuple (make_from_tuple): Use remove_reference_t instead
2954         of decay_t (P0777R1).
2955
2956 2019-05-17  François Dumont  <fdumont@gcc.gnu.org>
2957
2958         Move from state of allocators (LWG2593)
2959         * include/bits/stl_deque.h
2960         (_Deque_base(_Deque_base&&, false_type)): Remove.
2961         (_Deque_base(_Deque_base&&, true_type)): Remove.
2962         (_Deque_base(_Deque_base&&)): Adapt.
2963         (_Deque_base::_M_move_impl()): Remove.
2964         * testsuite/util/testsuite_allocator.h
2965         (propagating_allocator(propagating_allocator&&)): Preserve move from
2966         state.
2967         * testsuite/23_containers/deque/allocator/move_assign.cc (test02):
2968         Adapt.
2969         * testsuite/23_containers/forward_list/allocator/move_assign.cc (test02):
2970         Adapt.
2971         * testsuite/23_containers/list/allocator/move_assign.cc (test02): Adapt.
2972         * testsuite/23_containers/map/allocator/move_assign.cc (test02): Adapt.
2973         * testsuite/23_containers/multimap/allocator/move_assign.cc (test02):
2974         Adapt.
2975         * testsuite/23_containers/multiset/allocator/move_assign.cc (test02):
2976         Adapt.
2977         * testsuite/23_containers/set/allocator/move_assign.cc (test02): Adapt.
2978         * testsuite/23_containers/unordered_map/allocator/move_assign.cc
2979         (test02): Adapt.
2980         * testsuite/23_containers/unordered_multimap/allocator/move_assign.cc
2981         (test02): Adapt.
2982         * testsuite/23_containers/unordered_multiset/allocator/move_assign.cc
2983         (test02): Adapt.
2984         * testsuite/23_containers/unordered_set/allocator/move_assign.cc
2985         (test02): Adapt.
2986         * testsuite/23_containers/vector/allocator/move_assign.cc (test02):
2987         Adapt.
2988         * testsuite/23_containers/vector/bool/allocator/move_assign.cc (test02):
2989         Adapt.
2990         * testsuite/21_strings/basic_string/allocator/char/move_assign.cc
2991         (test02): Adapt.
2992         * testsuite/21_strings/basic_string/allocator/wchar_t/move_assign.cc
2993         (test02): Adapt.
2994
2995 2019-05-16  Jonathan Wakely  <jwakely@redhat.com>
2996
2997         * src/c++17/fs_ops.cc (absolute(const path&, error_code&))
2998         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Remove bogus assertion.
2999
3000         * include/std/variant (__overload_set): Remove.
3001         (_Arr): New helper.
3002         (_Build_FUN): New class template to define a single FUN overload,
3003         with specializations to prevent unwanted conversions, as per P0608R3.
3004         (_Build_FUNs): New class template to build an overload set of FUN.
3005         (_FUN_type): New alias template to perform overload resolution.
3006         (__accepted_type): Use integer_constant base for failure case. Use
3007         _FUN_type for successful case.
3008         (variant::__accepted_index): Use _Tp instead of _Tp&&.
3009         (variant::variant(_Tp&&)): Likewise.
3010         (variant::operator=(_Tp&&)): Likewise.
3011
3012         * include/std/variant (_Variant_storage<false, _Types...>::_M_reset):
3013         Replace raw visitation with a runtime check for the valueless state
3014         and a non-raw visitor.
3015         (_Variant_storage<false, _Types...>::_M_reset_impl): Remove.
3016         (variant::index()): Remove branch.
3017         (variant::swap(variant&)): Use valueless_by_exception() instead of
3018         comparing the index to variant_npos, and add likelihood attribute.
3019
3020         * include/bits/hashtable_policy.h (_Equal_helper): Remove.
3021         (_Hashtable_base::_Equal_hash_code): Define new class template.
3022         (_Hashtable_base::_M_equals): Use _Equal_hash_code instead of
3023         _Equal_helper.
3024
3025         * include/bits/hashtable_policy.h (_Hashtable_ebo_helper::_S_get):
3026         Replace with _M_get non-static member function.
3027         (_Hashtable_ebo_helper::_S_cget): Replace with _M_cget non-static
3028         member function.
3029         (_Hash_code_base, _Local_iterator_base, _Hashtable_base):
3030         (_Hashtable_alloc): Adjust to use non-static members of EBO helper.
3031
3032         * include/bits/hashtable_policy.h (_Hash_code_base::_M_swap): Use
3033         _S_get accessors for members in EBO helpers.
3034         (_Hash_code_base::_M_extract(), _Hash_code_base::_M_ranged_hash())
3035         (_Hash_code_base::_M_h1(), _Hash_code_base::_M_h2()): Remove non-const
3036         overloads.
3037         (_Hashtable_base::_M_swap): Use _S_get accessors for members in EBO
3038         helpers.
3039         (_Hashtable_base::_M_eq()): Remove non-const overload.
3040
3041 2019-05-15  Jonathan Wakely  <jwakely@redhat.com>
3042
3043         * include/std/variant (visit, visit<R>): Qualify calls to __do_visit.
3044
3045 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
3046
3047         * testsuite/util/testsuite_allocator.h (NullablePointer::operator bool):
3048         Fix return value.
3049
3050 2019-05-14  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
3051
3052         * config/os/solaris/solaris2.10: Move to ...
3053         * config/os/solaris: ... this.
3054         * configure.host (os_include_dir): Adapt.
3055         (abi_baseline_pair): Remove Solaris 10 handling.
3056         * config/abi/post/i386-solaris2.10: Remove.
3057         * config/abi/post/sparc-solaris2.10: Remove.
3058         * config/abi/post/i386-solaris2.11: Rename to ...
3059         * config/abi/post/i386-solaris: ... this.
3060         * config/abi/post/sparc-solaris2.11: Rename to ...
3061         * config/abi/post/sparc-solaris: ... this.
3062
3063         * libsupc++/new_opa.cc [_GLIBCXX_HAVE_MEMALIGN] [__sun]: Remove
3064         workaround.
3065
3066         * testsuite/ext/enc_filebuf/char/13598.cc: Remove *-*-solaris2.10
3067         xfail.
3068
3069 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
3070
3071         * include/std/variant (__visit_with_index): Remove typedef.
3072         (__deduce_visit_result): New tag type.
3073         (__raw_visit, __raw_idx_visit): New helper functions for "raw"
3074         visitation of possibly-valueless variants, forwarding to __do_visit
3075         with the relevant tag type.
3076         (_Variant_storage<false, _Types...>::_M_reset_impl): Use __raw_visit
3077         and make lambda return void.
3078         (__variant_construct): Likewise.
3079         (_Copy_assign_base::operator=, _Move_assign_base::operator=): Use
3080         __raw_idx_visit and make lambda return void.
3081         (_Multi_array::__untag_result): Add metafunction to check the function
3082         pointer type for a tag type that dictates the kind of visitation.
3083         (_Multi_array<_Ret(*)(_Visitor, _Variants...), __first, __rest...>):
3084         Use decltype(auto) instead of tagged function pointer type.
3085         (__gen_vtable_impl): Remove bool non-type parameter and unused
3086         _Variant_tuple parameter.
3087         (__gen_vtable_impl::__visit_invoke_impl): Remove.
3088         (__gen_vtable_impl::__do_visit_invoke): Remove.
3089         (__gen_vtable_impl::__do_visit_invoke_r): Remove.
3090         (__gen_vtable_impl::__visit_invoke): Use if-constexpr and __invoke_r
3091         for the visit<R> case, rather than dispatching to separate functions.
3092         (_VARIANT_RELATION_FUNCTION_TEMPLATE): Use __raw_idx_visit and make
3093         lambda return void.
3094         (variant::swap): Likewise.
3095         (__do_visit): Replace two non-type template parameters with a single
3096         type parameter, so that the caller must specify the visitor's return
3097         type (or one of the tag types).
3098         (visit): Deduce a return type from the visitor and use the
3099         __deduce_visit_result tag to enforce that all overloads return the
3100         same type.
3101         (visit<R>): Call __do_visit<R> with explicit result type.
3102         (__variant_hash_call_base_impl::operator()): Use __raw_visit and make
3103         lambda return void.
3104
3105 2019-05-14  Nina Dinka Ranns  <dinka.ranns@gmail.com>
3106
3107         nonesuch is insufficiently useless (lwg2996)
3108         * include/std/type_traits (struct __nonesuch): Added private base
3109         class to make __nonesuch not an aggregate and removed deleted default
3110         constructor.
3111         * include/bits/stl_pair.h (struct __nonesuch_no_braces): Removed.
3112         (operator=(const pair&)): Use __nonesuch instead of
3113         __nonesuch_no_braces.
3114         (operator=(pair&&)): Likewise
3115         * include/std/tuple (operator=(const tuple&)): Use __nonesuch instead
3116         of __nonesuch_no_braces.
3117         (operator=(tuple&&)): Likewise
3118         * include/experimental/type_traits (struct nonesuch): Added private
3119         base class to make nonesuch not an aggregate and removed deleted
3120         default constructor.
3121         * testsuite/20_util/nonesuch/nonesuch.cc: New.
3122         * testsuite/experimental/type_traits/nonesuch.cc: New.
3123
3124 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
3125
3126         * include/bits/std_function.h (_Simple_type_wrapper): Remove.
3127         (_Function_handler): Remove partial specializations for void return
3128         types and pointers to member.
3129         (_Function_handler::_M_manager): Adapt to removal of
3130         _Simple_type_wrapper.
3131         (_Function_handler::_M_invoke): Use __invoke_r instead of __invoke.
3132         * include/std/functional (_Bind_result::__enable_if_void)
3133         (_Bind_result::__disable_if_void): Remove sfinae helpers.
3134         (_Bind_result::__call): Use __invoke_r and remove overloads for void
3135         return types.
3136         * include/std/future (__future_base::_Task_state::_M_run)
3137         (__future_base::_Task_state::_M_run_delayed): Use __invoke_r and
3138         change return type of lambda expressions.
3139
3140         * include/bits/invoke.h (__invoke_r): Define new function implementing
3141         the INVOKE<R> pseudo-function.
3142         * testsuite/20_util/function_objects/invoke/1.cc: Add more tests.
3143         * testsuite/20_util/function_objects/invoke/2.cc: New test.
3144
3145         * include/std/type_traits (__is_nt_convertible_helper): Define it
3146         unconditionally, not only for C++20.
3147         (__is_nothrow_convertible): Define internal trait for use in C++11.
3148         (__is_nt_invocable_impl: Fix by using __is_nothrow_convertible.
3149         (is_invocable_r_v, is_nothrow_invocable_r_v): Add missing parameter.
3150         * testsuite/20_util/is_nothrow_convertible/value_ext.cc: New test.
3151         * testsuite/20_util/is_nothrow_convertible/value.cc: Check with type
3152         that has nothrow explicit conversion but potentially-throwing implicit
3153         conversion.
3154         * testsuite/20_util/is_nothrow_invocable/value.cc: Likewise.
3155         * testsuite/20_util/is_nothrow_invocable/value_ext.cc: Fix helper
3156         function to only consider implicit conversions.
3157         * testsuite/20_util/tuple/cons/noexcept_specs.cc: Add comment.
3158
3159         * include/std/iterator: Include <iosfwd> instead of <istream> and
3160         <ostream>.
3161
3162         * include/bits/stl_tree.h (_Rb_tree::erase(const Key*, const Key*)):
3163         Remove unused, non-standard function.
3164
3165         * include/bits/regex.h (match_results::max_size()): Adjust return
3166         value to account for prefix/suffix/unmatched subs.
3167         (match_results::_M_resize(unsigned int)): Use _Base_type::assign to
3168         reset the contained sub matches.
3169         (match_results::_M_establish_failed_match(_Bi_iter)): Add new member
3170         function to set result state following a failed match.
3171         * include/bits/regex.tcc (__regex_algo_impl): Remove loop to set
3172         sub_match states after _M_resize. Use _M_establish_failed_match.
3173
3174         PR libstdc++/69724
3175         * include/std/thread (thread::_State_impl, thread::_S_make_state):
3176         Replace single _Callable parameter with variadic _Args pack, to
3177         forward them directly to the tuple of decayed copies.
3178         * testsuite/30_threads/thread/cons/69724.cc: New test.
3179
3180 2019-05-14  Nina Dinka Ranns  <dinka.ranns@gmail.com>
3181
3182         Inconsistency wrt Allocators in basic_string assignment (LWG2579)
3183         * include/bits/basic_string.h: (operator=(const basic_string&):
3184         Move allocator decision to assign.
3185         (assign(const basic_string&)): Move allocator decision here.
3186         * testsuite/21_strings/basic_string/allocator/char/copy_assign.cc:
3187         Add tests.
3188         * testsuite/21_strings/basic_string/allocator/wchar_t/copy_assign.cc:
3189         Add tests.
3190
3191 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
3192
3193         * testsuite/util/testsuite_allocator.h (memory_resource)
3194         (default_resource_mgr): Fix indentation.
3195
3196         * testsuite/20_util/allocator_traits/members/allocate_hint_nonpod.cc:
3197         Use operator-> to access raw pointer member.
3198         * testsuite/23_containers/vector/59829.cc: Likewise.
3199         * testsuite/23_containers/vector/bool/80893.cc: Likewise.
3200         * testsuite/libstdc++-prettyprinters/cxx11.cc: Use NullablePointer.
3201         * testsuite/util/testsuite_allocator.h (NullablePointer): New utility
3202         for tests.
3203         (PointerBase, PointerBase_void): Derive from NullablePointer and use
3204         its constructors and equality operators. Change converting
3205         constructors to use operator-> to access private member of the other
3206         pointer type.
3207         (PointerBase_void::operator->()): Add, for access to private member.
3208         (operator-(PointerBase, PointerBase)): Change to hidden friend.
3209         (operator==(PointerBase, PointerBase)): Remove.
3210         (operator!=(PointerBase, PointerBase)): Remove.
3211
3212         * python/libstdcxx/v6/printers.py (UniquePointerPrinter.__init__): Do
3213         not assume field called _M_head_impl is the first tuple element.
3214         * testsuite/libstdc++-prettyprinters/compat.cc: Make tuple
3215         implementation more accurate.
3216         * testsuite/libstdc++-prettyprinters/cxx11.cc: Check unique_ptr with
3217         empty pointer type and non-empty deleter.
3218
3219         LWG 2899 - Make is_move_constructible correct for unique_ptr
3220         * include/bits/unique_ptr.h (__uniq_ptr_impl): Add move constructor,
3221         move assignment operator.
3222         (__uniq_ptr_impl::release(), __uniq_ptr_impl::reset(pointer)): Add.
3223         (__uniq_ptr_data): New class template with conditionally deleted
3224         special members.
3225         (unique_ptr, unique_ptr<T[], D>): Change type of data member from
3226         __uniq_ptr_impl<T, D> to __uniq_ptr_data<T, D>. Define move
3227         constructor and move assignment operator as defaulted.
3228         (unique_ptr::release(), unique_ptr<T[], D>::release()): Forward to
3229         __uniq_ptr_impl::release().
3230         (unique_ptr::reset(pointer), unique_ptr<T[], D>::reset<U>(U)): Forward
3231         to __uniq_ptr_impl::reset(pointer).
3232         * python/libstdcxx/v6/printers.py (UniquePointerPrinter.__init__):
3233         Check for new __uniq_ptr_data type.
3234         * testsuite/20_util/unique_ptr/dr2899.cc: New test.
3235
3236 2019-05-13  Jonathan Wakely  <jwakely@redhat.com>
3237
3238         PR libstdc++/90454.cc path construction from void*
3239         * include/bits/fs_path.h (path::_Path): Use remove_pointer so that
3240         pointers to void are rejected as well as void.
3241         * include/experimental/bits/fs_path.h (path::_Path): Likewise.
3242         * testsuite/27_io/filesystem/path/construct/80762.cc: Also check
3243         pointers to void.
3244         * testsuite/experimental/filesystem/path/construct/80762.cc: Likewise.
3245
3246         * doc/xml/manual/policy_data_structures.xml: Comment out stray
3247         <remark> elements. Fix formatting of bibliography references.
3248
3249 2019-05-13  Edward Smith-Rowland  <3dw4rd@verizon.net>
3250
3251         * doc/xml/manual/status_cxx2020.xml: Document P0811R3 status.
3252
3253 2019-05-13  Jonathan Wakely  <jwakely@redhat.com>
3254
3255         Remove Profile Mode, deprecated since 7.1.0
3256         * doc/Makefile.am: Remove XML file for profile mode docs.
3257         * doc/Makefile.in: Regenerate.
3258         * doc/xml/authors.xml: Remove authors of profile mode docs.
3259         * doc/xml/manual/appendix_contributing.xml: Remove mention of profile
3260         mode.
3261         * doc/xml/manual/debug.xml: Likewise.
3262         * doc/xml/manual/evolution.xml: Document removal of profile mode.
3263         * doc/xml/manual/profile_mode.xml: Remove profile mode docs.
3264         * doc/xml/manual/spine.xml: Remove profile mode author credit.
3265         * doc/xml/manual/test.xml: Remove docs for dg-require-profile-mode
3266         directive.
3267         * doc/xml/manual/using.xml: Remove docs for profile mode headers and
3268         macro.
3269         * doc/html/*: Regenerate.
3270         * include/Makefile.am: Remove profile mode headers.
3271         * include/Makefile.in: Regenerate.
3272         * include/bits/c++config (std::__profile): Remove namespace.
3273         [_GLIBCXX_PROFILE]: Remove checks for macro.
3274         * include/profile/array: Remove.
3275         * include/profile/base.h: Remove.
3276         * include/profile/bitset: Remove.
3277         * include/profile/deque: Remove.
3278         * include/profile/forward_list: Remove.
3279         * include/profile/impl/profiler.h: Remove.
3280         * include/profile/impl/profiler_algos.h: Remove.
3281         * include/profile/impl/profiler_container_size.h: Remove.
3282         * include/profile/impl/profiler_hash_func.h: Remove.
3283         * include/profile/impl/profiler_hashtable_size.h: Remove.
3284         * include/profile/impl/profiler_list_to_slist.h: Remove.
3285         * include/profile/impl/profiler_list_to_vector.h: Remove.
3286         * include/profile/impl/profiler_map_to_unordered_map.h: Remove.
3287         * include/profile/impl/profiler_node.h: Remove.
3288         * include/profile/impl/profiler_state.h: Remove.
3289         * include/profile/impl/profiler_trace.h: Remove.
3290         * include/profile/impl/profiler_vector_size.h: Remove.
3291         * include/profile/impl/profiler_vector_to_list.h: Remove.
3292         * include/profile/iterator_tracker.h: Remove.
3293         * include/profile/list: Remove.
3294         * include/profile/map: Remove.
3295         * include/profile/map.h: Remove.
3296         * include/profile/multimap.h: Remove.
3297         * include/profile/multiset.h: Remove.
3298         * include/profile/ordered_base.h: Remove.
3299         * include/profile/set: Remove.
3300         * include/profile/set.h: Remove.
3301         * include/profile/unordered_base.h: Remove.
3302         * include/profile/unordered_map: Remove.
3303         * include/profile/unordered_set: Remove.
3304         * include/profile/vector: Remove.
3305         * scripts/run_doxygen: Do not process profile mode headers.
3306         * testsuite/23_containers/array/element_access/60497.cc: Don't use
3307         profile mode type.
3308         * testsuite/23_containers/array/specialized_algorithms/swap_cxx17.cc:
3309         Remove dg-skip-if for profile mode.
3310         * testsuite/23_containers/forward_list/capacity/1.cc: Remove
3311         preprocessor check for profile mode.
3312         * testsuite/23_containers/list/capacity/29134.cc: Likewise.
3313         * testsuite/23_containers/map/modifiers/extract.cc: Remove dg-skip-if
3314         for profile mode.
3315         * testsuite/23_containers/map/modifiers/insert_or_assign/1.cc:
3316         Likewise.
3317         * testsuite/23_containers/map/modifiers/try_emplace/1.cc: Likewise.
3318         * testsuite/23_containers/multimap/modifiers/extract.cc: Likewise.
3319         * testsuite/23_containers/multiset/modifiers/extract.cc: Likewise.
3320         * testsuite/23_containers/set/modifiers/extract.cc: Likewise.
3321         * testsuite/23_containers/unordered_map/modifiers/extract.cc:
3322         Likewise.
3323         * testsuite/23_containers/unordered_multimap/modifiers/extract.cc:
3324         Likewise.
3325         * testsuite/23_containers/unordered_multiset/modifiers/extract.cc:
3326         Likewise.
3327         * testsuite/23_containers/unordered_set/modifiers/extract.cc:
3328         Likewise.
3329         * testsuite/23_containers/vector/bool/capacity/29134.cc: Remove
3330         preprocessor check for profile mode.
3331         * testsuite/23_containers/vector/bool/modifiers/insert/31370.cc:
3332         Likewise.
3333         * testsuite/23_containers/vector/modifiers/insert_vs_emplace.cc:
3334         Remove dg-skip-if for profile mode.
3335         * testsuite/25_algorithms/binary_search/partitioned.cc: Likewise.
3336         * testsuite/25_algorithms/equal_range/partitioned.cc: Likewise.
3337         * testsuite/25_algorithms/lexicographical_compare/71545.cc: Likewise.
3338         * testsuite/25_algorithms/lower_bound/partitioned.cc: Likewise.
3339         * testsuite/25_algorithms/upper_bound/partitioned.cc: Likewise.
3340         * testsuite/Makefile.am: Remove profile_flags variable and
3341         * testsuite/Makefile.am: Remove profile_flags variable and
3342         check-profile target.
3343         * testsuite/Makefile.in: Regenerate.
3344         * testsuite/ext/profile/all.cc: Remove.
3345         * testsuite/ext/profile/mutex_extensions_neg.cc: Remove.
3346         * testsuite/ext/profile/profiler_algos.cc: Remove.
3347         * testsuite/ext/profile/replace_new.cc: Remove.
3348         * testsuite/ext/throw_allocator/deallocate_global.cc: Remove
3349         preprocessor check for profile mode.
3350         * testsuite/ext/throw_allocator/deallocate_local.cc: Likewise.
3351         * testsuite/lib/libstdc++.exp (check_v3_target_profile_mode): Remove.
3352         (check_v3_target_normal_mode): Do not check for profile mode macro.
3353         * testsuite/libstdc++-prettyprinters/80276.cc: Remove dg-skip-if for
3354         profile mode.
3355         * testsuite/libstdc++-prettyprinters/compat.cc: Likewise.
3356         * testsuite/libstdc++-prettyprinters/cxx11.cc: Likewise.
3357         * testsuite/libstdc++-prettyprinters/cxx17.cc: Likewise.
3358         * testsuite/libstdc++-prettyprinters/debug.cc: Likewise.
3359         * testsuite/libstdc++-prettyprinters/debug_cxx11.cc: Likewise.
3360         * testsuite/libstdc++-prettyprinters/libfundts.cc: Likewise.
3361         * testsuite/libstdc++-prettyprinters/simple.cc: Likewise.
3362         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
3363         * testsuite/libstdc++-prettyprinters/whatis.cc: Likewise.
3364         * testsuite/libstdc++-prettyprinters/whatis2.cc: Likewise.
3365
3366         Remove array_allocator extension, deprecated since 4.9.0
3367         * doc/xml/manual/allocator.xml: Remove documentation for
3368         array_allocator.
3369         * doc/xml/manual/evolution.xml: Document array_allocator removal.
3370         * doc/xml/manual/using.xml: Remove header from documentation.
3371         * include/Makefile.am: Remove <ext/array_allocator.h> header.
3372         * include/Makefile.in: Regenerate.
3373         * include/ext/array_allocator.h: Remove.
3374         * include/precompiled/extc++.h: Do not include removed header.
3375         * testsuite/ext/array_allocator/1.cc: Remove.
3376         * testsuite/ext/array_allocator/2.cc: Remove.
3377         * testsuite/ext/array_allocator/26875.cc: Remove.
3378         * testsuite/ext/array_allocator/3.cc: Remove.
3379         * testsuite/ext/array_allocator/check_deallocate_null.cc: Remove.
3380         * testsuite/ext/array_allocator/check_delete.cc: Remove.
3381         * testsuite/ext/array_allocator/check_new.cc: Remove.
3382         * testsuite/ext/array_allocator/variadic_construct.cc: Remove.
3383         * testsuite/ext/headers.cc: Do not include removed header.
3384
3385 2019-05-11  François Dumont  <fdumont@gcc.gnu.org>
3386
3387         * include/bits/stl_bvector.h
3388         (operator==(const _Bit_iterator_base&, const _Bit_iterator_base&)):
3389         Make hidden friend.
3390         (operator<(const _Bit_iterator_base&, const _Bit_iterator_base&)):
3391         Likewise.
3392         (operator!=(const _Bit_iterator_base&, const _Bit_iterator_base&)):
3393         Likewise.
3394         (operator>(const _Bit_iterator_base&, const _Bit_iterator_base&)):
3395         Likewise.
3396         (operator<=(const _Bit_iterator_base&, const _Bit_iterator_base&)):
3397         Likewise.
3398         (operator>=(const _Bit_iterator_base&, const _Bit_iterator_base&)):
3399         Likewise.
3400         (operator-(const _Bit_iterator_base&, const _Bit_iterator_base&)):
3401         Likewise.
3402         (_Bit_iterator::operator+(difference_type)): Likewise and allow NRVO
3403         copy elision.
3404         (_Bit_iterator::operator-(difference_type)): Likewise.
3405         (operator+(ptrdiff_t, const _Bit_iterator&)): Make hidden friend.
3406         (_Bit_const_iterator::operator+(difference_type)): Likewise and allow
3407         NRVO copy elision.
3408         (_Bit_const_iterator::operator-(difference_type)): Likewise.
3409         (operator+(ptrdiff_t, const _Bit_const_iterator&)): Make hidden friend.
3410
3411 2019-05-10  Jonathan Wakely  <jwakely@redhat.com>
3412
3413         PR libstdc++/81266
3414         * testsuite/util/thread/all.h: Do not use remove_pointer for
3415         std::thread::native_handle_type.
3416
3417         PR libstdc++/90397
3418         * include/std/variant (_Variant_storage<false, Types...>::_M_storage())
3419         (_Variant_storage<true, Types...>::_M_reset()))
3420         (_Variant_storage<true, Types...>::_M_storage())): Add noexcept.
3421         (__get_storage): Likewise.
3422         (variant): Add noexcept to friend declarations for __get and
3423         __get_storage.
3424
3425         PR libstdc++/90388
3426         * include/bits/unique_ptr.h (default_delete, default_delete<T[]>):
3427         Use _Require for constraints.
3428         (operator>(nullptr_t, const unique_ptr<T,D>&)): Implement exactly as
3429         per the standard.
3430         (__uniq_ptr_hash): New base class with conditionally-disabled call
3431         operator.
3432         (hash<unique_ptr<T,D>>): Derive from __uniq_ptr_hash.
3433         * testsuite/20_util/default_delete/48631_neg.cc: Adjust dg-error line.
3434         * testsuite/20_util/unique_ptr/hash/90388.cc: New test.
3435
3436         * include/bits/shared_ptr.h: Improve docs.
3437         * include/bits/shared_ptr_base.h: Likewise.
3438         * include/bits/stl_uninitialized.h: Likewise.
3439         * include/bits/unique_ptr.h: Likewise.
3440         * libsupc++/new: Likewise.
3441
3442 2019-05-09  François Dumont  <fdumont@gcc.gnu.org>
3443
3444         * include/bits/stl_deque.h
3445         (operator==(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3446         Make hidden friend.
3447         (operator!=(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3448         Likewise.
3449         (operator<(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3450         Likewise.
3451         (operator<=(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3452         Likewise.
3453         (operator>(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3454         Likewise.
3455         (operator>=(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3456         Likewise.
3457         (_Deque_iterator<>::operator+(difference_type)): Likewise and allow NRVO
3458         copy elision.
3459         (_Deque_iterator<>::operator-(difference_type)): Likewise.
3460
3461 2019-05-08  François Dumont  <fdumont@gcc.gnu.org>
3462
3463         PR libstdc++/90277
3464         * testsuite/23_containers/unordered_multiset/insert/24061-multiset.cc
3465         (test01): Reserve for number of insertions to avoid rehash during test.
3466         * testsuite/23_containers/unordered_multimap/insert/24061-multimap.cc
3467         (test01): Likewise.
3468         * testsuite/23_containers/unordered_multimap/insert/24061-multimap.cc
3469         (test01): Likewise.
3470         (test02): Likewise.
3471         (test03): Likewise.
3472
3473 2019-05-08  Jonathan Wakely  <jwakely@redhat.com>
3474
3475         * include/experimental/bits/fs_path.h: Improve docs.
3476         * include/experimental/bits/net.h: Fix wrong header name in comment.
3477         Do not document implementation details.
3478         * include/experimental/netfwd: Fix doxygen grouping.
3479
3480 2019-05-07  Jonathan Wakely  <jwakely@redhat.com>
3481
3482         * include/bits/stl_pair.h: Improve docs.
3483         * include/std/tuple: Likewise.
3484
3485         * doc/doxygen/doxygroups.cc (std::literals): Add documentation for
3486         inline namespace.
3487         * include/std/chrono: Improve docs.
3488         * include/std/ratio: Do not document implementation details.
3489         * testsuite/20_util/ratio/cons/cons_overflow_neg.cc: Adjust dg-error
3490         line numbers.
3491         * testsuite/20_util/ratio/operations/ops_overflow_neg.cc: Likewise.
3492
3493         PR libstdc++/89102
3494         * doc/xml/manual/intro.xml: Document DR 2408 and 2465 changes.
3495         * include/std/chrono (__duration_common_type_wrapper): Replace with ...
3496         (__duration_common_type): New helper.
3497         (common_type<chrono::duration<R1, P2>, chrono::duration<R2, P2>>): Use
3498         __duration_common_type.
3499         (__timepoint_common_type_wrapper): Replace with ...
3500         (__timepoint_common_type): New helper.
3501         (common_type<chrono::time_point<C, D2>, chrono::time_point<C, D2>>):
3502         Use __time_point_common_type.
3503         * include/std/type_traits (common_type<>): Define, as per LWG 2408.
3504         (__common_type_impl): If either argument is transformed by decay,
3505         use the common_type of the decayed types.
3506         (__common_type_impl<_Tp, _Up, _Tp, _Up>): If the types are already
3507         decayed, use __do_common_type_impl to get the common_type.
3508         (common_type<_Tp>): Use common_type<_Tp, _Tp>.
3509         (__do_member_type_wrapper, __member_type_wrapper)
3510         (__expanded_common_type_wrapper): Remove.
3511         (__common_type_pack, __common_type_fold): New helpers.
3512         (common_type<_Tp, _Up, _Vp...>): Use new helpers instead of
3513         __member_type_wrapper and __expanded_common_type_wrapper.
3514         * testsuite/20_util/common_type/requirements/explicit_instantiation.cc:
3515         Test zero-length template argument list.
3516         * testsuite/20_util/common_type/requirements/sfinae_friendly_1.cc:
3517         Test single argument cases and argument types that should decay.
3518         * testsuite/20_util/common_type/requirements/sfinae_friendly_2.cc:
3519         Adjust expected error.
3520         * testsuite/20_util/duration/literals/range_neg.cc: Use zero for
3521         dg-error lineno.
3522         * testsuite/20_util/duration/requirements/typedefs_neg1.cc: Likewise.
3523         * testsuite/20_util/duration/requirements/typedefs_neg2.cc: Likewise.
3524         * testsuite/20_util/duration/requirements/typedefs_neg3.cc: Likewise.
3525
3526         * doc/xml/manual/intro.xml: Fix DR 2537 and DR 2566 confusion.
3527
3528 2019-05-01  Nina Dinka Ranns  <dinka.ranns@gmail.com>
3529
3530         Make allocator propagation more consistent for
3531         operator+(basic_string) (P1165R1)
3532         * include/bits/basic_string.h
3533         (operator+(basic_string&&, basic_string&&): Changed resulting
3534         allocator to always be the one from the first parameter.
3535         * include/bits/basic_string.tcc
3536         (operator+(const _CharT*, const basic_string&)): Changed
3537         resulting allocator to be SOCCC on the second parameter's allocator.
3538         (operator+(_CharT, const basic_string&)): Likewise.
3539         * testsuite/21_strings/basic_string/allocator/char/operator_plus.cc:
3540         New.
3541         * testsuite/21_strings/basic_string/allocator/wchar_t/operator_plus.cc:
3542         New.
3543
3544 2019-05-07  Jonathan Wakely  <jwakely@redhat.com>
3545
3546         * include/bits/regex.h: Improve docs.
3547         * include/bits/regex.tcc: Do not document implementation details.
3548
3549         * testsuite/19_diagnostics/error_code/hash.cc: New test.
3550
3551 2019-05-06  François Dumont  <fdumont@gcc.gnu.org>
3552
3553         * python/libstdcxx/v6/printers.py (add_one_template_type_printer):
3554         Add type printer for container types in std::__debug namespace.
3555         * testsuite/lib/gdb-test.exp (whatis-regexp-test): New.
3556         (gdb-tests): Use distinct parameters for the type of test and use of
3557         regex.
3558         (gdb-test): Check for regex test even if 'whatis' test.
3559         * testsuite/libstdc++-prettyprinters/80276.cc: Adapt for _GLIBCXX_DEBUG
3560         mode.
3561         * testsuite/libstdc++-prettyprinters/cxx11.cc: Likewise.
3562         * testsuite/libstdc++-prettyprinters/cxx17.cc: Likewise.
3563         * testsuite/libstdc++-prettyprinters/libfundts.cc: Likewise.
3564         * testsuite/libstdc++-prettyprinters/simple.cc: Likewise.
3565         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
3566         * testsuite/libstdc++-prettyprinters/whatis.cc: Likewise.
3567         * testsuite/libstdc++-prettyprinters/whatis2.cc: Likewise.
3568
3569 2019-05-04  Jonathan Wakely  <jwakely@redhat.com>
3570
3571         * include/std/system_error (error_category): Fix comment.
3572
3573         PR libstdc++/90299
3574         * src/c++17/fs_ops.cc (absolute(const path&)): Report an error if the
3575         argument is an empty path.
3576         (absolute(const path&, error_code&)): Use invalid_argument as error
3577         code instead of no_such_file_or_directory.
3578         * testsuite/27_io/filesystem/operations/absolute.cc: Check handling
3579         of non-existent paths and empty paths with both overloads of absolute.
3580
3581         * include/std/system_error (error_category, error_code)
3582         (error_condition): Improve docs.
3583         * libsupc++/exception: Add missing @addtogroup Doxygen command.
3584         * libsupc++/exception_ptr.h (exception_ptr): Link equality operators
3585         to class documentation. Suppress documentation for implementation
3586         details.
3587         * libsupc++/nested_exception.h (throw_with_nested, rethrow_if_nested):
3588         Suppress documentation for implementation details.
3589
3590         * include/std/system_error (error_code): Remove friend declaration
3591         for hash<error_code>.
3592         (hash<error_code>::operator()): Use public member functions to access
3593         value and category.
3594         (hash<error_condition>::operator()): Use address of category, not
3595         its object representation.
3596         * src/c++11/compatibility-c++0x.cc (hash<error_code>::operator()):
3597         Use public member functions to access value and category.
3598         * testsuite/19_diagnostics/error_condition/hash.cc: New test.
3599
3600 2019-05-04  François Dumont  <fdumont@gcc.gnu.org>
3601
3602         * include/bits/hashtable.h (_Hashtable<>::rehash): Review comment.
3603         * include/bits/hashtable_policy.h
3604         (_Prime_rehash_policy::_M_bkt_for_elements): Use __builtin_ceill.
3605         (_Power2_rehash_policy::_M_bkt_for_elements): Likewise.
3606         (_Power2_rehash_policy::_M_next_bkt): Enforce returning a result not
3607         smaller than input value rather than always greater. Preserve
3608         _M_next_resize if called with 0 input. Use __builtin_floorl.
3609         (_Power2_rehash_policy::_M_need_rehash): Rehash only if number of
3610         elements + number of insertions is greater than _M_next_resize. Start
3611         with 11 buckets if not told otherwise. Use __builtin_floorl.
3612         (_Rehash_base<>::reserve): Use rehash policy _M_bkt_for_elements.
3613         * src/c++11/hashtable_c++0x.cc (_Prime_rehash_policy::_M_next_bkt):
3614         Preserve _M_next_resize if called with 0 input. Use __builtin_floorl.
3615         (_Prime_rehash_policy::_M_need_rehash): Start with 11 buckets if not
3616         told otherwise. Use __builtin_floorl.
3617         * testsuite/23_containers/unordered_set/hash_policy/71181.cc: Adapt test
3618         to also validate _Power2_rehash_policy.
3619         * testsuite/23_containers/unordered_set/hash_policy/power2_rehash.cc:
3620         Adapt.
3621
3622 2019-05-03  Jonathan Wakely  <jwakely@redhat.com>
3623
3624         PR libstdc++/61761
3625         * testsuite/26_numerics/complex/proj.cc: Don't assume <cmath> defines
3626         std::copysign.
3627
3628         PR libstdc++/52119
3629         * include/ext/numeric_traits.h (__glibcxx_min): Avoid integer
3630         overflow warning with -Wpedantic -Wsystem-headers.
3631
3632 2019-05-02  Jonathan Wakely  <jwakely@redhat.com>
3633
3634         PR libstdc++/90314
3635         * include/bits/c++config (_GLIBCXX_NOEXCEPT_IF): Use variadic macro.
3636         * include/bits/move.h (swap): Remove extra parentheses.
3637
3638         * include/experimental/bits/lfts_config.h: Improve doc markup.
3639         * include/experimental/optional: Improve docs.
3640         (_Has_addressof_mem, _Has_addressof_free, _Has_addressof)
3641         (__constexpr_addressof): Remove.
3642         (optional::operator->()): Use std::__addressof().
3643         * include/std/optional (optional::operator->()): Adjust whitespace.
3644         * testsuite/experimental/optional/constexpr/observers/2.cc: Check
3645         that operator-> is still constexpr with overloaded operator&. Change
3646         to compile-only test.
3647         * testsuite/experimental/optional/constexpr/observers/3.cc: Change to
3648         compile-only test.
3649
3650         * include/bits/shared_ptr.h: Improve docs.
3651         * include/bits/shared_ptr_atomic.h: Likewise.
3652         * include/bits/unique_ptr.h: Likewise. Adjust whitespace.
3653
3654         * include/bits/basic_string.h: Fix iterator/index confusion in
3655         Doxygen comments.
3656         * include/bits/range_access.h: Fix Doxygen warnings.
3657         * include/bits/refwrap.h: Do not document implementation details.
3658         (ref, cref): Group docs with reference_wrapper.
3659         * include/std/fstream: Fix Doxygen markup.
3660         * libsupc++/initializer_list (begin, end): Group docs with
3661         initializer_list.
3662
3663         * doc/doxygen/user.cfg.in: Set MARKDOWN_SUPPORT=YES.
3664
3665         * include/bits/unique_lock.h: Fix/improve doxygen markup.
3666         * include/std/mutex: Likewise.
3667         * include/std/shared_mutex: Likewise.
3668
3669         * include/bits/fs_dir.h: Fix/improve doxygen markup.
3670         * include/bits/fs_fwd.h: Likewise.
3671         * include/bits/fs_ops.h: Likewise.
3672         * include/bits/fs_path.h: Likewise.
3673         * include/std/filesystem: Likewise.
3674
3675         * include/experimental/bits/net.h: Fix/improve doxygen markup.
3676         * include/experimental/buffer: Likewise.
3677         * include/experimental/executor: Likewise.
3678         * include/experimental/internet: Likewise.
3679         * include/experimental/io_context: Likewise.
3680         * include/experimental/net: Likewise.
3681         * include/experimental/netfwd: Likewise.
3682         * include/experimental/socket: Likewise.
3683         * include/experimental/timer: Likewise.
3684
3685         * doc/doxygen/doxygroups.cc: Move description of experimental group
3686         here.
3687         * include/experimental/algorithm: Add to libfund-ts doc group.
3688         * include/experimental/any: Likewise. Do not document implementation
3689         details.
3690         * include/experimental/array: Add to libfund-ts doc group.
3691         * include/experimental/bits/lfts_config.h: Define libfund-ts doc group
3692         for Library Fundamentals.
3693         * include/experimental/chrono: Add to libfund-ts doc group.
3694         * include/experimental/deque: Likewise.
3695         * include/experimental/forward_list: Likewise.
3696         * include/experimental/functional: Likewise.
3697         * include/experimental/iterator: Likewise.
3698         * include/experimental/list: Likewise.
3699         * include/experimental/map: Likewise.
3700         * include/experimental/memory: Likewise.
3701         * include/experimental/memory_resource: Likewise. Improve docs.
3702         details.
3703         * include/experimental/numeric: Add to libfund-ts doc group.
3704         * include/experimental/optional: Likewise.
3705         * include/experimental/propagate_const: Likewise.
3706         * include/experimental/random: Likewise.
3707         * include/experimental/ratio: Likewise.
3708         * include/experimental/regex: Likewise.
3709         * include/experimental/set: Likewise.
3710         * include/experimental/source_location: Likewise.
3711         * include/experimental/string: Likewise.
3712         * include/experimental/string_view: Likewise.
3713         * include/experimental/system_error: Likewise.
3714         * include/experimental/tuple: Likewise.
3715         * include/experimental/type_traits: Likewise.
3716         * include/experimental/unordered_map: Likewise.
3717         * include/experimental/unordered_set: Likewise.
3718         * include/experimental/utility: Likewise.
3719         * include/experimental/vector: Likewise.
3720         * testsuite/experimental/any/misc/any_cast_neg.cc: Adjust dg-error.
3721         * testsuite/experimental/array/neg.cc: Adjust dg-error.
3722         * testsuite/experimental/propagate_const/assignment/move_neg.cc:
3723         Likewise.
3724         * testsuite/experimental/propagate_const/cons/move_neg.cc: Likewise.
3725         * testsuite/experimental/propagate_const/requirements2.cc: Likewise.
3726         * testsuite/experimental/propagate_const/requirements3.cc: Likewise.
3727         * testsuite/experimental/propagate_const/requirements4.cc: Likewise.
3728         * testsuite/experimental/propagate_const/requirements5.cc: Likewise.
3729
3730         * include/experimental/bits/fs_dir.h: Fix Doxygen markup.
3731         * include/experimental/bits/fs_fwd.h: Improve docs.
3732         * include/experimental/bits/fs_ops.h: fix Doxygen markup.
3733         * include/experimental/bits/fs_path.h: Likewise.
3734         (path, filesystem_error, u8path): Improve docs.
3735         * include/experimental/filesystem: Link to docs for TS.
3736
3737         * config/allocator/new_allocator_base.h (__allocator_base): Add
3738         workaround for Doxygen bug #6945.
3739         * include/std/memory: Improve docs. Define group for pointer safety.
3740         * include/std/scoped_allocator: Improve docs. Use "undocumented"
3741         conditional to suppress documentation for implementation details.
3742
3743         * include/bits/specfun.h: Improve docs.
3744         * include/tr1/cmath: Likewise. Fix nesting of preprocessor conditions
3745         and namespaces.
3746
3747         * doc/doxygen/doxygroups.cc (std::tr2, std::__gnu_cxx): Improve docs.
3748         (std::experimental): Add docs.
3749         * doc/doxygen/user.cfg.in (PREDEFINED): Expand macros for __cxx11
3750         namespace to nothing when generating docs.
3751         * include/bits/regex_constants.h (std::regex_constants): Improve docs.
3752         * include/std/chrono (std::chrono): Likewise.
3753         * include/std/functional (std::placeholders): Likewise.
3754         * include/std/thread (std::this_thread): Likewise.
3755
3756         * include/parallel/settings.h: Fix Doxygen markup.
3757
3758         * include/ext/pb_ds/detail/bin_search_tree_/*_imps.hpp: Do not define
3759         anything unless PB_DS_CLASS_C_DEC is defined.
3760         * include/ext/pb_ds/detail/binary_heap_/*_imps.hpp: Likewise.
3761         * include/ext/pb_ds/detail/binomial_heap_/*_imps.hpp: Likewise.
3762         * include/ext/pb_ds/detail/binomial_heap_base_/*_imps.hpp: Likewise.
3763         * include/ext/pb_ds/detail/cc_hash_table_map_/*_imps.hpp: Likewise.
3764         * include/ext/pb_ds/detail/gp_hash_table_map_/*_imps.hpp: Likewise.
3765         * include/ext/pb_ds/detail/hash_fn/*_imp.hpp: Likewise.
3766         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/*_imps.hpp:
3767         Likewise.
3768         * include/ext/pb_ds/detail/list_update_map_/*_imps.hpp: Likewise.
3769         * include/ext/pb_ds/detail/ov_tree_map_/*_imps.hpp: Likewise.
3770         * include/ext/pb_ds/detail/pairing_heap_/*_imps.hpp: Likewise.
3771         * include/ext/pb_ds/detail/pat_trie_/*_imps.hpp: Likewise.
3772         * include/ext/pb_ds/detail/rb_tree_map_/*_imps.hpp: Likewise.
3773         * include/ext/pb_ds/detail/rc_binomial_heap_/*_imps.hpp: Likewise.
3774         * include/ext/pb_ds/detail/resize_policy*_imp.hpp: Likewise.
3775         * include/ext/pb_ds/detail/splay_tree_/*_imps.hpp: Likewise.
3776         * include/ext/pb_ds/detail/thin_heap_/*_imps.hpp: Likewise.
3777         * include/ext/pb_ds/detail/trie_policy*_imp.hpp: Likewise.
3778         * include/ext/pb_ds/detail/unordered_iterator/const_iterator.hpp:
3779         Likewise.
3780         * include/ext/pb_ds/detail/unordered_iterator/iterator.hpp: Likewise.
3781         * include/ext/pb_ds/detail/unordered_iterator/point_const_iterator.hpp:
3782         Likewise.
3783         * include/ext/pb_ds/detail/unordered_iterator/point_iterator.hpp:
3784         Likewise.
3785
3786         * doc/doxygen/user.cfg.in: Regenerate with Doxygen 1.8.14 and set
3787         GROUP_NESTED_COMPOUNDS=YES and SORT_BY_SCOPE_NAME=NO. Add various
3788         _GLIBCXX_xxx macros and __attribute__(X) to PREDEFINED macros that
3789         Doxygen expands.
3790
3791 2019-05-01  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
3792
3793         * config/abi/post/i386-solaris2.10/baseline_symbols.txt: Regenerate.
3794         * config/abi/post/i386-solaris2.10/amd64/baseline_symbols.txt: Likewise.
3795         * config/abi/post/i386-solaris2.11/baseline_symbols.txt: Likewise.
3796         * config/abi/post/i386-solaris2.11/amd64/baseline_symbols.txt: Likewise.
3797         * config/abi/post/sparc-solaris2.10/baseline_symbols.txt: Likewise.
3798         * config/abi/post/sparc-solaris2.10/sparcv9/baseline_symbols.txt:
3799         Likewise.
3800         * config/abi/post/sparc-solaris2.11/baseline_symbols.txt: Likewise.
3801         * config/abi/post/sparc-solaris2.11/sparcv9/baseline_symbols.txt:
3802         Likewise.
3803
3804 2019-05-01  Jonathan Wakely  <jwakely@redhat.com>
3805
3806         PR libstdc++/61761
3807         * include/std/complex (__complex_proj): Return parameter unchanged.
3808         [_GLIBCXX_USE_C99_COMPLEX] (__complex_proj): Change overloads for
3809         floating-point types to take std::complex arguments.
3810         [_GLIBCXX_USE_C99_MATH_TR1] (__complex_proj): Add overloads for
3811         floating-point types.
3812         * testsuite/26_numerics/complex/proj.cc: New test.
3813
3814 2019-04-30  Jakub Jelinek  <jakub@redhat.com>
3815
3816         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Change _Lock_policyE2 exports
3817         to _Lock_policyE[012].
3818         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
3819
3820 2019-04-30  Jonathan Wakely  <jwakely@redhat.com>
3821
3822         * testsuite/27_io/filesystem/path/decompose/root_path.cc: Remove
3823         macros accidentally left in.
3824         * testsuite/27_io/filesystem/path/native/string-char8_t.cc: Remove
3825         unnecessary -lstdc++fs option. Fix test for mingw.
3826         * testsuite/experimental/filesystem/path/native/string-char8_t.cc:
3827         Fix test for mingw.
3828
3829 2019-04-30  Jakub Jelinek  <jakub@redhat.com>
3830
3831         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
3832
3833 2019-04-29  Jonathan Wakely  <jwakely@redhat.com>
3834
3835         * include/bits/stl_algo.h (generate_n): Adjust doxygen comment.
3836
3837         * include/bits/move.h (swap(T&, T&), swap(T (&)[N], T (&)[N])): Use
3838         _GLIBCXX_NOEXCEPT_IF to simplify declarations.
3839
3840         PR libstdc++/71312
3841         * src/c++11/shared_ptr.cc (get_mutex): Align pool mutexes to 64 bytes.
3842
3843         * include/bits/stl_bvector.h (vector<bool>::empty()): Add nodiscard
3844         attribute.
3845
3846         * include/bits/stl_iterator_base_types.h (_Iter_base): Remove unused
3847         class template and partial specialization.
3848
3849         PR libstdc++/87982
3850         * include/bits/stl_algo.h (generate_n): Convert _Size parameter to
3851         an integral type.
3852         * include/bits/stl_algobase.h (__size_to_integer): New overloaded
3853         functions to convert a value to an integral type.
3854         (__fill_n_a, __fill_n_a): Assert that __n is already an integral type.
3855         (fill_n): Convert _Size parameter to an integral type.
3856         * testsuite/25_algorithms/fill_n/87982.cc: New test.
3857         * testsuite/25_algorithms/fill_n/87982_neg.cc: New test.
3858         * testsuite/25_algorithms/fill_n/dr426.cc: New test.
3859         * testsuite/25_algorithms/generate_n/87982.cc: New test.
3860         * testsuite/25_algorithms/generate_n/87982_neg.cc: New test.
3861         * testsuite/25_algorithms/generate_n/dr426.cc: New test.
3862
3863 2019-04-28  Nina Dinka Ranns  <dinka.ranns@gmail.com>
3864
3865         Adding noexcept-specification on tuple constructors (LWG 2899)
3866         * libstdc++-v3/include/std/tuple:
3867         (tuple()): Add noexcept-specification.
3868         (tuple(const _Elements&...)): Likewise
3869         (tuple(_UElements&&...)): Likewise
3870         (tuple(const tuple<_UElements...>&)): Likewise
3871         (tuple(tuple<_UElements...>&&)): Likewise
3872         (tuple(const _T1&, const _T2&)): Likewise
3873         (tuple(_U1&&, _U2&&)): Likewise
3874         (tuple(const tuple<_U1, _U2>&): Likewise
3875         (tuple(tuple<_U1, _U2>&&): Likewise
3876         (tuple(const pair<_U1, _U2>&): Likewise
3877         (tuple(pair<_U1, _U2>&&): Likewise
3878         * libstdc++-v3/testsuite/20_util/tuple/cons/noexcept_specs.cc: New
3879
3880 2019-04-27  Marc Glisse  <marc.glisse@inria.fr>
3881
3882         PR libstdc++/87106
3883         * include/bits/stl_uninitialized.h (__relocate_object_a): Mark the
3884         arguments with __restrict.
3885
3886 2019-04-26  H.J. Lu  <hongjiu.lu@intel.com>
3887
3888         * config/abi/post/x86_64-linux-gnu/x32/baseline_symbols.txt: Updated.
3889
3890 2019-04-26  Jonathan Wakely  <jwakely@redhat.com>
3891
3892         * include/experimental/bits/fs_path.h
3893         (path::_S_convert_loc<_InputIterator>): Create const std::string to
3894         avoid redundant call to _S_convert_loc with non-const pointers.
3895
3896         * testsuite/20_util/variant/run.cc: Use a new Hashable type to test
3897         hashing, because pmr::string depends on _GLIBCXX_USE_CXX11_ABI==1.
3898         * testsuite/21_strings/basic_string/hash/hash.cc
3899         [!_GLIBCXX_USE_CXX11_ABI]: Don't test pmr strings.
3900         * testsuite/21_strings/basic_string/hash/hash_char8_t.cc
3901         [!_GLIBCXX_USE_CXX11_ABI]: Likewise.
3902
3903         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Replace wildcard that matches
3904         wstring::_M_replace_dispatch with more specific patterns.
3905         * include/bits/fs_path.h (path::_S_convert_loc<_InputIterator>):
3906         Create const std::string to avoid redundant call to _S_convert_loc
3907         with non-const pointers.
3908         * include/bits/locale_conv.h (__do_str_codecvt): Use if-constexpr to
3909         avoid unnecessary basic_string::assign instantiations.
3910
3911         * include/std/memory (__uses_alloc_args): Add string-literal to
3912         static_assert, to match the one in __uses_alloc.
3913         [__cpp_concepts] (_Std_pair): Use C++2a syntax for concept.
3914         * testsuite/20_util/polymorphic_allocator/construct_c++2a.cc: Check
3915         for recursive uses-allocator construction of nested pairs.
3916         * testsuite/20_util/scoped_allocator/construct_pair_c++2a.cc:: Add
3917         comment.
3918
3919 2019-04-26  Jakub Jelinek  <jakub@redhat.com>
3920
3921         * config/abi/post/s390x-linux-gnu/32/baseline_symbols.txt: Update.
3922         * config/abi/post/s390-linux-gnu/baseline_symbols.txt: Update.
3923         * config/abi/post/powerpc-linux-gnu/baseline_symbols.txt: Update.
3924         * config/abi/post/powerpc64-linux-gnu/32/baseline_symbols.txt: Update.
3925
3926         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
3927         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
3928         * config/abi/post/i386-linux-gnu/baseline_symbols.txt: Update.
3929         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
3930         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
3931         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
3932         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
3933
3934 2019-04-25  Jonathan Wakely  <jwakely@redhat.com>
3935
3936         PR libstdc++/90239
3937         * doc/xml/manual/status_cxx2020.xml: Amend P0591R4 status.
3938         * include/std/scoped_allocator [__cplusplus > 201703L]
3939         (scoped_allocator_adaptor::construct): Define in terms of
3940         uses_allocator_construction_args, as per P0591R4.
3941         * testsuite/20_util/scoped_allocator/construct_pair_c++2a.cc: New test.
3942         * testsuite/util/testsuite_allocator.h: Remove name of unused
3943         parameter.
3944
3945 2019-04-24  Jonathan Wakely  <jwakely@redhat.com>
3946
3947         * doc/xml/manual/status_cxx2017.xml: Document P0024R2 status.
3948         * doc/html/*: Regenerate.
3949
3950         * include/bits/fs_path.h (operator<, operator<=, operator>)
3951         (operator>=, operator==, operator!=): Make hidden friends, as per
3952         LWG 3065.
3953         * testsuite/27_io/filesystem/path/native/string-char8_t.cc: Fix
3954         string type in test.
3955         * testsuite/27_io/filesystem/path/native/string.cc: Likewise.
3956
3957         * include/std/any (any::any(ValueType&&)): Use __and_v.
3958         * include/std/numeric (midpoint(T, T, T), midpoint(T*, T*, T*)):
3959         Likewise.
3960
3961         * include/std/tuple (apply): Use remove_reference_t instead of decay_t
3962         as per P0777R1.
3963         * include/std/type_traits (__result_of_memfun): Use remove_reference
3964         instead of __remove_cvref_t and remove redundant is_same check.
3965         (__inv_unwrap): Use __remove_cvref_t instead of decay_t.
3966
3967         * include/experimental/string_view (basic_string_view::pointer)
3968         (basic_string_view::reference): Fix to refer to non-const value_type.
3969         * include/bits/basic_string.h (basic_string): Use __sv_check and
3970         __sv_limit instead of basic_string_view::_M_check and
3971         basic_string_view::_M_limit.
3972         * include/std/string_view (__sv_check, __sv_limit): New
3973         helper functions to replace basic_string_view::_M_check and
3974         basic_string_view::_M_limit.
3975         (basic_string_view): Add static assertions to enforce ill-formed
3976         requirement for traits_type::char_type from P1148R0, and to enforce
3977         required properties of char-like types.
3978         (basic_string_view::pointer, basic_string_view::reference): Fix to
3979         refer to non-const value_type.
3980         (basic_string_view::operator[], basic_string_view::at)
3981         (basic_string_view::front, basic_string_view::back)
3982         (basic_string_view::data): Use const_reference and const_pointer
3983         typedefs for return types.
3984         (basic_string_view::_M_check, basic_string_view::_M_limit): Remove.
3985         (hash<wstring_view>): Fix argument_type typedef.
3986         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/
3987         char/1.cc: Fix expected return type of basic_string_view::data().
3988         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/
3989         wchar_t/1.cc: Likewise.
3990         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/
3991         char/1.cc: Likewise.
3992         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/
3993         wchar_t/1.cc: Likewise.
3994         * testsuite/21_strings/basic_string_view/requirements/traits_neg.cc:
3995         New test.
3996         * testsuite/21_strings/basic_string_view/requirements/typedefs.cc:
3997         Check reference and pointer typedefs.
3998         * testsuite/experimental/string_view/requirements/typedefs.cc:
3999         Likewise.
4000         * testsuite/experimental/string_view/modifiers/remove_prefix/char/1.cc:
4001         Fix expected return type of basic_string_view::data().
4002         * testsuite/experimental/string_view/modifiers/remove_prefix/wchar_t/
4003         1.cc: Likewise.
4004         * testsuite/experimental/string_view/modifiers/remove_suffix/char/1.cc:
4005         Likewise.
4006         * testsuite/experimental/string_view/modifiers/remove_suffix/wchar_t/
4007         1.cc: Likewise.
4008
4009         PR libstdc++/90220
4010         * include/std/any (__any_caster): Use remove_cv_t instead of decay_t.
4011         Avoid a runtime check for types that can never be stored in std::any.
4012         * testsuite/20_util/any/misc/any_cast.cc: Test std::any_cast with
4013         array types.
4014
4015         PR libstdc++/90220 (partial)
4016         * include/std/any (any_cast<T>(any*), any_cast<T>(const any*)): Do
4017         not attempt ill-formed static_cast to pointers to non-object types.
4018         * testsuite/20_util/any/misc/any_cast.cc: Test std::any_cast with
4019         function types.
4020
4021         * testsuite/20_util/variant/run.cc: Catch exception by reference to
4022         prevent -Wcatch-value warning.
4023
4024         * include/std/variant (__variant_construct): Use template parameter
4025         type instead of equivalent decltype-specifier.
4026         (_Move_ctor_base<false, Types...>::_Move_ctor_base(_Move_ctor_base&&)):
4027         Replace forward with move.
4028         (_Move_ctor_base<false, Types...>::_M_destructive_move)
4029         (_Move_ctor_base<false, Types...>::_M_destructive_copy)
4030         (_Move_ctor_base<true, Types...>::_M_destructive_move)
4031         (_Move_ctor_base<true, Types...>::_M_destructive_copy): Only set the
4032         index after construction succeeds.
4033         (_Copy_assign_base<false, Types...>::operator=): Remove redundant
4034         if-constexpr checks that are always true. Use __remove_cvref_t instead
4035         of remove_reference so that is_nothrow_move_constructible check
4036         doesn't use a const rvalue parameter. In the potentially-throwing case
4037         construct a temporary and move assign it, as per LWG 2904.
4038         (_Move_assign_base<false, Types...>::operator=): Remove redundant
4039         if-constexpr checks that are always true. Use emplace as per LWG 2904.
4040         (variant::operator=(T&&)): Only use emplace conditionally, otherwise
4041         construct a temporary and move assign from it, as per LWG 2904.
4042         * testsuite/20_util/variant/exception_safety.cc: Check that
4043         assignment operators have strong exception safety guarantee.
4044
4045 2019-04-23  Thomas Rodgers <trodgers@redhat.com>
4046
4047         Document PSTL linker flags
4048
4049         * doc/xml/manual/using.xml: Add PSTL linker flags to table 3.1.
4050
4051 2019-04-23  Jonathan Wakely  <jwakely@redhat.com>
4052
4053         * include/std/variant (__detail::__variant::_Traits): Make
4054         _S_trivial_copy_assign depend on _S_trivial_copy_ctor and make
4055         _S_trivial_move_assign depend on _S_trivial_move_ctor, as per
4056         P0602R4.
4057         (__detail::__variant::_Copy_assign_alias): Only depend on
4058         _S_trivial_copy_assign, which subsumes _S_trivial_copy_ctor now.
4059         * testsuite/20_util/variant/compile.cc: Correct checks for trivial
4060         move assignment operators.
4061
4062         PR libstdc++/90165
4063         * include/std/variant (variant::__not_self): New helper for the
4064         is_same_v<remove_cvref_t<T>, variant>==false constraints.
4065         (variant::__to_type_impl): Remove.
4066         (variant::__to_type): Add default argument to check pack size, instead
4067         of using __to_type_impl.
4068         (variant::__accepted_type): Add default argument using __not_self.
4069         (variant::__is_in_place_tag, variant::__not_in_place_tag): New helpers
4070         for variant(T&&) constructor constraint.
4071         (variant::variant(T&&)): Use __not_in_place_tag in constraints.
4072         Extract __accepted_type into a named template parameter for reuse in
4073         other constraints and in the exception specification.
4074         (variant::variant(in_place_type_t<T>, Args&&...))
4075         (variant::variant(in_place_type_t<T>, initializer_list<U>, Args&&...))
4076         (variant::variant(in_place_index_t<T>, Args&&...))
4077         (variant::variant(in_place_index_t<T>, initializer_list<U>, Args&&...))
4078         (variant::operator=T&&)): Remove redundant && from trait arguments.
4079         * testsuite/20_util/variant/compile.cc: Check variant(T&&) constructor
4080         isn't used for in_place_type or in_place_index arguments.
4081
4082         * include/std/type_traits (unwrap_reference_t): Define for C++2a.
4083         (unwrap_ref_decay): Remove inheritance from unwrap_reference.
4084         * testsuite/20_util/unwrap_reference/1.cc: Adjust test to use alias.
4085
4086 2019-04-23  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>
4087             Bernd Edlinger  <bernd.edlinger@hotmail.de>
4088             Jakub Jelinek  <jakub@redhat.com>
4089
4090         PR target/89093
4091         * libsupc++/eh_personality.cc (PERSONALITY_FUNCTION): Add
4092         general-regs-only target attribute for ARM.
4093
4094 2019-04-23  Jonathan Wakely  <jwakely@redhat.com>
4095
4096         PR libstdc++/87431
4097         * include/bits/basic_string.h (_Never_valueless_alt): Make partial
4098         specialization also depend on is_nothrow_move_constructible.
4099         * include/std/variant (__detail::__variant::__never_valueless()):
4100         Only true if the variant would have a move assignment operator.
4101         (__detail::__variant::_Variant_storage<false, T...>::_M_valid()):
4102         Check __never_valueless<T...>().
4103         (variant::emplace): Only perform non-throwing move assignments
4104         for never-valueless alternatives if the variant has a move assignment
4105         operator.
4106         * testsuite/20_util/variant/compile.cc: Check that never-valueless
4107         types can be emplaced into non-assignable variants.
4108         * testsuite/20_util/variant/run.cc: Check that never-valueless types
4109         don't get copied when emplaced into non-assignable variants.
4110
4111         * include/std/variant (__detail::__variant::__ref_cast): Remove
4112         unused function.
4113         (__detail::__variant::_Uninitialized::_M_get)
4114         (__detail::__variant::__get)
4115         (__gen_vtable_impl::__element_by_index_or_cookie): Add noexcept.
4116
4117 2019-04-21  Iain Sandoe  <iain@sandoe.co.uk>
4118
4119         * testsuite/17_intro/headers/c++1998/charset.cc: Skip for Darwin8
4120         to Darwin10.
4121         * testsuite/17_intro/headers/c++2011/charset.cc: Likewise.
4122         * testsuite/17_intro/headers/c++2014/charset.cc: Likewise.
4123         * testsuite/17_intro/headers/c++2017/charset.cc: Likewise.
4124         * testsuite/17_intro/headers/c++2020/charset.cc: Likewise.
4125
4126 2019-04-20  Thomas Rodgers <trodgers@redhat.com>
4127
4128         Delegate PSTL configuration to pstl/pstl_config.h
4129
4130         * include/bits/c++config: Remove explicit PSTL configuration
4131         macros and use definitions from <pstl/pstl_config.h>.
4132
4133 2019-04-20  Thomas Rodgers <trodgers@redhat.com>
4134
4135         Cleanup algorithm implementations
4136         * include/pstl/glue_algorithm_impl.h (stable_sort): Forward
4137         execution policy.
4138         (mismatch): Forward execution policy.
4139         (equal): Qualify call to std::equal().
4140         (partial_sort): Forward execution policy.
4141         (inplace_merge): Forward execution policy.
4142
4143 2019-04-19  Thomas Rodgers <trodgers@redhat.com>
4144
4145         Improve implementation of parallel equal()
4146         * include/pstl/algorithm_impl.h
4147         (__internal::__brick_equal): use "4 iterator" version of
4148         std::equal().
4149         (__internal::__brick_equal): use simd for random access
4150         iterators on unsequenced execution policies.
4151         (__internal::__pattern_equal): add "4 iterator" version
4152         (__internal::__pattern_equal): dispatch to simd __brick_equal
4153         for vector-only execution policies.
4154         (__internal::__pattern_equal): dispatch to __parallel_or for
4155         parallel execution policies.
4156         * include/pstl/glue_algorithm_impl.h
4157         (std::equal): dispatch to "4 iterator" version of
4158         __internal::__pattern_equal().
4159
4160 2019-04-17  Jonathan Wakely  <jwakely@redhat.com>
4161
4162         PR libstdc++/90105
4163         * include/bits/forward_list.h (operator==): Do not use operator!= to
4164         compare elements.
4165         (forward_list<T, A>::sort(Comp)): When elements are equal take the one
4166         earlier in the list, so that sort is stable.
4167         * testsuite/23_containers/forward_list/operations/90105.cc: New test.
4168         * testsuite/23_containers/forward_list/comparable.cc: Test with
4169         types that meet the minimum EqualityComparable and LessThanComparable
4170         requirements. Remove irrelevant comment.
4171
4172         * include/std/variant (__detail::__variant::_Traits::_S_copy_assign):
4173         Do not depend on whether all alternative types are move constructible.
4174         (__detail::__variant::_Copy_assign_base::operator=): Remove cv-quals
4175         from the operand when deciding whether to perform the assignment.
4176         * testsuite/20_util/variant/compile.cc (DeletedMoves): Define type
4177         with deleted move constructor and deleted move assignment operator.
4178         (default_ctor, copy_ctor, move_ctor, copy_assign, move_assign): Check
4179         behaviour of variants with DeletedMoves as an alternative.
4180         * testsuite/20_util/variant/run.cc (DeletedMoves): Define same type.
4181         (move_ctor, move_assign): Check that moving a variant with a
4182         DeletedMoves alternative falls back to copying instead of moving.
4183
4184         * testsuite/20_util/variant/compile.cc: Remove empty string literals
4185         from static_assert declarations.
4186
4187         * testsuite/20_util/variant/compile.cc (MoveCtorOnly): Fix type to
4188         actually match its name.
4189         (MoveCtorAndSwapOnly): Define new type that adds swap to MoveCtorOnly.
4190         (test_swap()): Fix result for MoveCtorOnly and check
4191         MoveCtorAndSwapOnly.
4192
4193         * include/std/optional (optional::value_or(U&&) &&): Add missing
4194         constexpr specifier.
4195         * testsuite/20_util/optional/constexpr/observers/4.cc: Check value_or
4196         for disengaged optionals and rvalue optionals.
4197         * testsuite/20_util/optional/observers/4.cc: Likewise.
4198
4199 2019-04-12  Thomas Rodgers  <trodgers@redhat.com>
4200
4201         * include/pstl/algorithm_impl.h: Uglify identfiers.
4202         * include/pstl/numeric_impl.h:  Uglify identfiers.
4203         * include/pstl/parallel_backend_tbb.h: Uglify identfiers.
4204
4205 2019-04-11  Thomas Rodgers  <trodgers@redhat.com>
4206
4207         * include/bits/c++config:
4208         Add definition for __PSTL_ASSERT.
4209         Add definition for __PSTL_ASSERT_MSG.
4210         * include/pstl/algorithm_impl.h: Replace use of assert().
4211         * include/pstl/numeric_impl.h: Replace use of assert().
4212         * include/pstl/parallel_backend_tbb.h:
4213         Replace use of assert().
4214         Replace use of __TBB_ASSERT().
4215         * include/pstl/parallel_backend_utils.h: Replace use of assert().
4216
4217 2019-04-11  Jonathan Wakely  <jwakely@redhat.com>
4218
4219         PR libstdc++/90046
4220         * src/c++17/memory_resource.cc
4221         (monotonic_buffer_resource::_Chunk::allocate): Increase alignment if
4222         needed to allow placing a _Chunk at the end of the buffer.
4223         (monotonic_buffer_resource::_M_new_buffer): Remove static_assert.
4224
4225 2019-04-10  Jonathan Wakely  <jwakely@redhat.com>
4226
4227         * doc/xml/faq.xml: Add information about emergency EH pool.
4228         * doc/xml/manual/debug.xml: Update list of memory debugging tools.
4229         Move outdated information on mt_allocator to a separate section.
4230         * doc/xml/manual/evolution.xml: Clarify that GLIBCXX_FORCE_NEW
4231         doesn't affect the default allocator.
4232
4233         * testsuite/lib/libstdc++.exp (check_v3_target_parallel_mode): Fix
4234         typo.
4235
4236         PR libstdc++/89851
4237         * testsuite/20_util/variant/89851.cc: New test.
4238
4239 2019-04-09  Jonathan Wakely  <jwakely@redhat.com>
4240
4241         * include/std/variant: Adjust whitespace. Add comments.
4242         (_Multi_array): Leave primary template undefined.
4243         (_Multi_array<_Tp>): Define partial specialization for base case of
4244         recursion.
4245         (__gen_vtable_impl, __gen_vtable): Remove redundant && from type
4246         which is always a reference.
4247         (__gen_vtable::_S_apply()): Remove function, inline body into
4248         default member initializer.
4249         * testsuite/20_util/variant/visit.cc: Test with noncopyable types.
4250
4251         * include/std/variant (__variant_idx_cookie): Add member type.
4252         (__visitor_result_type): Remove.
4253         (__do_visit): Use invoke_result instead of __visitor_result_type.
4254         * testsuite/20_util/variant/visit.cc: New test.
4255
4256         PR libstdc++/90008
4257         * include/std/variant (_VARIANT_RELATION_FUNCTION_TEMPLATE): Remove
4258         unused capture.
4259         * testsuite/20_util/variant/90008.cc: New test.
4260
4261 2019-04-09  Thomas Rodgers  <trodgers@redhat.com>
4262
4263         * include/pstl/algorithm_impl.h: Add namespace qualification.
4264         * include/pstl/execution_defs.h: Add namespace qualification.
4265         * include/pstl/execution_impl.h: Add namespace qualification.
4266         * include/pstl/numeric_impl.h: Add namespace qualification.
4267         * include/pstl/parallel_backend_tbb.h: Add namespace qualification.
4268         * include/pstl/unseq_backend_simd.h: Add namespace qualification.
4269         * include/pstl/parallel_backend_utils.h: Include <cassert>.
4270
4271 2019-04-08  Ville Voutilainen  <ville.voutilainen@gmail.com>
4272
4273         Fix visit<R> for variant.
4274         * include/std/variant (__do_visit): Add a template parameter
4275         for enforcing same return types for visit.
4276         (__gen_vtable_impl): Likewise.
4277         (_S_apply_single_alt): Adjust.
4278         (__visit_invoke_impl): New. Handle casting to void.
4279         (__do_visit_invoke): New. Enforces same return types.
4280         (__do_visit_invoke_r): New. Converts return types.
4281         (__visit_invoke): Adjust.
4282         (__gen_vtable):  Add a template parameter for enforcing
4283         same return types for visit.
4284         * testsuite/20_util/variant/visit_r.cc: Add a test for a visitor with
4285         different return types.
4286         * testsuite/20_util/variant/visit_neg.cc: New. Ensures that
4287         visitors with different return types don't accidentally
4288         compile with regular visitation.
4289
4290 2019-04-08  Christophe Lyon  <christophe.lyon@linaro.org>
4291
4292         * testsuite/27_io/filesystem/iterators/caching.cc: Add
4293         dg-require-filesystem-ts.
4294
4295 2019-04-05  Jonathan Wakely  <jwakely@redhat.com>
4296
4297         * doc/xml/manual/status_cxx2020.xml: Update status.
4298         * include/std/variant (visit<R>): Define for C++2a (P0655R1).
4299         * testsuite/20_util/variant/visit_r.cc: New test.
4300
4301         * include/bits/fs_dir.h (directory_iterator::operator*)
4302         (directory_iterator::operator->): Add noexcept.
4303         (operator==, operator!=): Replace namespace-scope equality operators
4304         for directory iterators with hidden friends.
4305
4306         PR libstdc++/89986
4307         * config/abi/pre/gnu.ver: Add missing exports.
4308         * testsuite/27_io/filesystem/iterators/directory_iterator.cc: Test
4309         increment member.
4310
4311         * config/abi/pre/gnu.ver: Export new symbols.
4312         * include/bits/fs_dir.h (recursive_directory_iterator::options())
4313         (recursive_directory_iterator::recursion_pending())
4314         (recursive_directory_iterator::disable_recursion_pending()): Remove
4315         inline definitions. Make noexcept.
4316         (recursive_directory_iterator::depth())
4317         (recursive_directory_iterator::operator*())
4318         (recursive_directory_iterator::operator->()): Make noexcept.
4319         (recursive_directory_iterator::_M_options)
4320         (recursive_directory_iterator::_M_pending): Remove data members.
4321         * src/c++17/fs_path.cc (_Dir_stack): Add constructor and data members.
4322         (recursive_directory_iterator::recursive_directory_iterator): Remove
4323         ctor-initializer. Use new constructor for _Dir_stack.
4324         (recursive_directory_iterator::options())
4325         (recursive_directory_iterator::recursion_pending())
4326         (recursive_directory_iterator::disable_recursion_pending()): Add
4327         non-inline definitions.
4328         (recursive_directory_iterator::depth()): Make noexcept.
4329         (recursive_directory_iterator::increment(error_code&))
4330         (recursive_directory_iterator::pop(error_code&)): Adjust to new
4331         location of options and recursion_pending members.
4332         * testsuite/27_io/filesystem/iterators/recursion_pending.cc: New test.
4333         * testsuite/util/testsuite_fs.h (__gnu_test::scoped_file): Add
4334         user-declared move constructor and assignment operator, to make the
4335         type move-only.
4336
4337         * src/c++17/fs_dir.cc (_Dir::advance(bool, error_code&)): Handle
4338         d_type == DT_UNKNOWN immediately.
4339         (_Dir::should_recurse(bool, error_code&)): Remove file_type::unknown
4340         handling here.
4341         * testsuite/27_io/filesystem/iterators/caching.cc: New test.
4342
4343         * include/bits/fs_path.h (path::operator=(path&&)): Check for self
4344         assignment.
4345         * src/c++17/fs_path.cc (path::operator=(const path&)): Likewise.
4346         * testsuite/27_io/filesystem/path/assign/copy.cc: Test self
4347         assignment.
4348
4349         PR libstdc++/87431 (again)
4350         * include/bits/basic_string.h (__variant::_Never_valueless_alt):
4351         Define partial specialization for basic_string.
4352         * include/bits/shared_ptr.h (_Never_valueless_alt): Likewise for
4353         shared_ptr and weak_ptr.
4354         * include/bits/std_function.h (_Never_valueless_alt): Likewise for
4355         function.
4356         * include/bits/stl_vector.h (_Never_valueless_alt): Likewise for
4357         vector.
4358         * include/bits/unique_ptr.h (_Never_valueless_alt): Likewise for
4359         unique_ptr.
4360         * include/debug/vector (_Never_valueless_alt): Likewise for debug
4361         vector.
4362         * include/std/any (_Never_valueless_alt): Define explicit
4363         specialization for any.
4364         * include/std/variant (_Never_valueless_alt): Define primary template.
4365         (__never_valueless): Use _Never_valueless_alt instead of
4366         is_trivially_copyable.
4367         (variant::emplace<N>(Args&&...)): Add special case for non-throwing
4368         initializations to avoid try-catch overhead. Add special case for
4369         scalars produced by potentially-throwing conversions. Use
4370         _Never_valueless_alt instead of is_trivially_copyable for the
4371         remaining strong exception-safety cases.
4372         (variant::emplace<N>(initializer_list<U>, Args&&...)): Likewise.
4373         * testsuite/20_util/variant/87431.cc: Run both test functions.
4374         * testsuite/20_util/variant/exception_safety.cc: New test.
4375         * testsuite/20_util/variant/run.cc: Use pmr::string instead of string,
4376         so the variant becomes valueless.
4377
4378 2019-04-03  Jonathan Wakely  <jwakely@redhat.com>
4379
4380         PR libstdc++/85184
4381         * include/std/variant (_Copy_assign_base, _Move_assign_base, variant):
4382         Remove assertions.
4383         (variant::emplace<_Tp>): Return result of emplace<N> directly.
4384
4385         * include/std/string (__hash_string_base): New class template defining
4386         operator() for hashing strings.
4387         (hash<pmr::string>, hash<pmr::u8string>, hash<pmr::u16string>)
4388         (hash<pmr::u32string>, hash<pmr::wstring>): Define for C++17.
4389         * testsuite/21_strings/basic_string/hash/hash.cc: New test.
4390         * testsuite/21_strings/basic_string/hash/hash_char8_t.cc: New test.
4391
4392 2019-04-01  Ville Voutilainen  <ville.voutilainen@gmail.com>
4393
4394         Use single-visitation in variant assignment and swap and relops.
4395         Also use indices instead of types when checking whether
4396         variants hold the same thing.
4397         * include/std/variant (__do_visit): Add a template parameter
4398         for index visitation, invoke with indices if index visitation
4399         is used.
4400         (__variant_idx_cookie): New.
4401         (__visit_with_index): Likewise.
4402         (_Copy_assign_base::operator=): Do single-visitation with
4403         an index visitor.
4404         (_Move_assign_base::operator=): Likewise.
4405         (_Extra_visit_slot_needed): Adjust.
4406         (__visit_invoke): Call with indices if it's an index visitor.
4407         (relops): Do single-visitation with an index visitor.
4408         (swap): Likewise.
4409         (__visitor_result_type): New.
4410
4411 2019-03-30  Eric Botcazou  <ebotcazou@adacore.com>
4412
4413         * src/c++17/fs_ops.cc (fs::permissions): Use std::errc::not_supported.
4414
4415 2019-03-28  Ville Voutilainen  <ville.voutilainen@gmail.com>
4416
4417         Don't revisit a variant we are already visiting.
4418         * include/std/variant (__variant_construct_single): New.
4419         (__variant_construct): Use it.
4420         (_M_destructive_move): Likewise.
4421         (_M_destructive_copy): Likewise.
4422         (_Copy_assign_base::operator=): Adjust.
4423         (_Move_assign_base::operator=): Likewise.
4424         (swap): Likewise.
4425
4426 2019-03-26  Jonathan Wakely  <jwakely@redhat.com>
4427
4428         PR libstdc++/85965
4429         * include/bits/hashtable.h (_Hashtable): Move static assertions to
4430         destructor so they are not evaluated until the _Key type is complete.
4431         * include/bits/stl_tree.h (_Rb_tree): Likewise.
4432         * testsuite/23_containers/set/85965.cc: New test.
4433         * testsuite/23_containers/unordered_set/85965.cc: New test.
4434         * testsuite/23_containers/map/48101_neg.cc: Replace "here" errors
4435         with regexp matching the corresponding _Rb_tree specialization.
4436         * testsuite/23_containers/multimap/48101_neg.cc: Likewise.
4437         * testsuite/23_containers/multiset/48101_neg.cc: Remove "here" error.
4438         * testsuite/23_containers/set/48101_neg.cc: Likewise.
4439         * testsuite/23_containers/unordered_map/48101_neg.cc: Likewise.
4440         * testsuite/23_containers/unordered_multimap/48101_neg.cc: Likewise.
4441         * testsuite/23_containers/unordered_multiset/48101_neg.cc: Likewise.
4442         * testsuite/23_containers/unordered_set/48101_neg.cc: Likewise.
4443
4444 2019-03-26  Ville Voutilainen  <ville.voutilainen@gmail.com>
4445
4446         PR libstdc++/89825
4447         Fix based on a suggestion by Antony Polukhin.
4448         * include/std/variant (__never_valueless): New.
4449         (_M_valid): Use it.
4450         (_Extra_visit_slot_needed): New.
4451         (_Multi_array): Use it.
4452         (_S_apply_all_alts): Likewise.
4453
4454 2019-03-26  Ville Voutilainen  <ville.voutilainen@gmail.com>
4455
4456         PR libstdc++/89824
4457         Fix based on a suggestion by Antony Polukhin.
4458         * include/std/variant (__gen_vtable): Don't reserve an
4459         additional table slot, _Multi_array already does that.
4460
4461 2019-03-26  Ville Voutilainen  <ville.voutilainen@gmail.com>
4462
4463         PR libstdc++/89816
4464         Fix based on a suggestion by Antony Polukhin.
4465         * include/std/variant (__variant_construct): Capture a pointer
4466         to the storage and visit just one variant.
4467
4468 2019-03-22  Jonathan Wakely  <jwakely@redhat.com>
4469
4470         * doc/xml/manual/backwards_compatibility.xml: Remove link to
4471         Doxygen-generated pages with unstable URL.
4472         * doc/xml/manual/concurrency_extensions.xml: Likewise.
4473         * doc/xml/manual/extensions.xml: Likewise.
4474         * doc/xml/manual/parallel_mode.xml: Likewise.
4475         * doc/xml/manual/support.xml: Likewise.
4476
4477         * include/bits/stl_algobase.h (__lg): Do arithmetic on type int to
4478         avoid -Wconversion warnings.
4479
4480 2019-03-21  Thomas Rodgers  <trodgers@redhat.com>
4481
4482         * include/Makefile.am (std_header): Add ${std_srcdir}/execution.
4483         (pstl_srcdir, pstl_builddir, pstl_headers): New variables.
4484         (allstamped): Add stamp-pstl.
4485         (install-headers): Add ptsl_builddir.
4486         * include/Makefile.in: Regenerate.
4487         * include/bits/c++config: Add pstl configuration.
4488         * include/pstl/LICENSE.txt: New file.
4489         * include/pstl/algorithm_fwd.h: New file.
4490         * include/pstl/algorithm_impl.h: New file.
4491         * include/pstl/execution_defs.h: New file.
4492         * include/pstl/execution_impl.h: New file.
4493         * include/pstl/glue_algorithm_defs.h: New file.
4494         * include/pstl/glue_algorithm_impl.h: New file.
4495         * include/pstl/glue_execution_defs.h: New file.
4496         * include/pstl/glue_memory_defs.h: New file.
4497         * include/pstl/glue_memory_impl.h: New file.
4498         * include/pstl/glue_numeric_defs.h: New file.
4499         * include/pstl/glue_numeric_impl.h: New file.
4500         * include/pstl/memory_impl.h: New file.
4501         * include/pstl/numeric_fwd.h: New file.
4502         * include/pstl/numeric_impl.h: New file.
4503         * include/pstl/parallel_backend.h: New file.
4504         * include/pstl/parallel_backend_tbb.h: New file.
4505         * include/pstl/parallel_backend_utils.h: New file.
4506         * include/pstl/parallel_impl.h: New file.
4507         * include/pstl/pstl_config.h: New file.
4508         * include/pstl/unseq_backend_simd.h: New file.
4509         * include/pstl/utils.h: New file.
4510         * include/std/algorithm: Include parallel algorithm implementations.
4511         * include/std/execution: New file.
4512         * include/std/memory: Include parallel algorithm implementations.
4513         * include/std/numeric: Include parallel algorithm implementations.
4514         * include/std/version: Add parallel algorithms feature test macro.
4515         * testsuite/util/pstl/pstl_test_config.h: New file.
4516         * testsuite/util/pstl/test_utils.h: New file.
4517         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc: New file.
4518         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc: New file.
4519         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_fill_destroy.cc: New file.
4520         * testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: New file.
4521         * testsuite/25_algorithms/pstl/alg_merge/merge.cc: New file.
4522         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc: New file.
4523         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc: New file.
4524         * testsuite/25_algorithms/pstl/alg_modifying_operations/fill.cc: New file.
4525         * testsuite/25_algorithms/pstl/alg_modifying_operations/generate.cc: New file.
4526         * testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc: New file.
4527         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc: New file.
4528         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc: New file.
4529         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc: New file.
4530         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove_copy.cc: New file.
4531         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace.cc: New file.
4532         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc: New file.
4533         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc: New file.
4534         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc: New file.
4535         * testsuite/25_algorithms/pstl/alg_modifying_operations/swap_ranges.cc: New file.
4536         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_binary.cc: New file.
4537         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_unary.cc: New file.
4538         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc: New file.
4539         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc: New file.
4540         * testsuite/25_algorithms/pstl/alg_nonmodifying/adjacent_find.cc: New file.
4541         * testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc: New file.
4542         * testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc: New file.
4543         * testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc: New file.
4544         * testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc: New file.
4545         * testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc: New file.
4546         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc: New file.
4547         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc: New file.
4548         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc: New file.
4549         * testsuite/25_algorithms/pstl/alg_nonmodifying/for_each.cc: New file.
4550         * testsuite/25_algorithms/pstl/alg_nonmodifying/mismatch.cc: New file.
4551         * testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc: New file.
4552         * testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc: New file.
4553         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc: New file.
4554         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc: New file.
4555         * testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc: New file.
4556         * testsuite/25_algorithms/pstl/alg_sorting/includes.cc: New file.
4557         * testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: New file.
4558         * testsuite/25_algorithms/pstl/alg_sorting/is_sorted.cc: New file.
4559         * testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc: New file.
4560         * testsuite/25_algorithms/pstl/alg_sorting/minmax_element.cc: New file.
4561         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc: New file.
4562         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc: New file.
4563         * testsuite/25_algorithms/pstl/alg_sorting/set.cc: New file.
4564         * testsuite/25_algorithms/pstl/alg_sorting/sort.cc: New file.
4565         * testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc: New file.
4566         * testsuite/26_numerics/pstl/numeric_ops/reduce.cc: New file.
4567         * testsuite/26_numerics/pstl/numeric_ops/scan.cc: New file.
4568         * testsuite/26_numerics/pstl/numeric_ops/transform_reduce.cc: New file.
4569         * testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc: New file.
4570         * testsuite/testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc: New file.
4571         * testsuite/testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc: New file.
4572         * testsuite/testsuite/20_util/specialized_algorithms/pstl/uninitialized_fill_destroy.cc: New file.
4573         * testsuite/testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: New file.
4574         * testsuite/testsuite/25_algorithms/pstl/alg_merge/merge.cc: New file.
4575         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc: New file.
4576         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc: New file.
4577         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/fill.cc: New file.
4578         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/generate.cc: New file.
4579         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc: New file.
4580         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc: New file.
4581         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc: New file.
4582         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc: New file.
4583         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/remove_copy.cc: New file.
4584         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/replace.cc: New file.
4585         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc: New file.
4586         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc: New file.
4587         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc: New file.
4588         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/swap_ranges.cc: New file.
4589         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/transform_binary.cc: New file.
4590         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/transform_unary.cc: New file.
4591         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc: New file.
4592         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc: New file.
4593         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/adjacent_find.cc: New file.
4594         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc: New file.
4595         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc: New file.
4596         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc: New file.
4597         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc: New file.
4598         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc: New file.
4599         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc: New file.
4600         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc: New file.
4601         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc: New file.
4602         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/for_each.cc: New file.
4603         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/mismatch.cc: New file.
4604         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc: New file.
4605         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc: New file.
4606         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc: New file.
4607         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc: New file.
4608         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc: New file.
4609         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/includes.cc: New file.
4610         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: New file.
4611         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/is_sorted.cc: New file.
4612         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc: New file.
4613         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/minmax_element.cc: New file.
4614         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc: New file.
4615         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc: New file.
4616         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/set.cc: New file.
4617         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/sort.cc: New file.
4618         * testsuite/testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc: New file.
4619         * testsuite/testsuite/26_numerics/pstl/numeric_ops/reduce.cc: New file.
4620         * testsuite/testsuite/26_numerics/pstl/numeric_ops/scan.cc: New file.
4621         * testsuite/testsuite/26_numerics/pstl/numeric_ops/transform_reduce.cc: New file.
4622         * testsuite/testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc: New file.
4623
4624 2019-03-21  Jonathan Wakely  <jwakely@redhat.com>
4625
4626         * include/c_compatibility/math.h [!__STDCPP_WANT_MATH_SPEC_FUNCS__]
4627         (assoc_laguerre, assoc_laguerref, assoc_laguerrel, assoc_legendre)
4628         (assoc_legendref, assoc_legendrel, beta, betaf, betal, comp_ellint_1)
4629         (comp_ellint_1f, comp_ellint_1l, comp_ellint_2, comp_ellint_2f)
4630         (comp_ellint_2l, comp_ellint_3, comp_ellint_3f, comp_ellint_3l)
4631         (cyl_bessel_i, cyl_bessel_if, cyl_bessel_il, cyl_bessel_j)
4632         (cyl_bessel_jf, cyl_bessel_jl, cyl_bessel_k, cyl_bessel_kf)
4633         (cyl_bessel_kl, cyl_neumann, cyl_neumannf, cyl_neumannl, ellint_1)
4634         (ellint_1f, ellint_1l, ellint_2, ellint_2f, ellint_2l, ellint_3)
4635         (ellint_3f, ellint_3l, expint, expintf, expintl, hermite, hermitef)
4636         (hermitel, laguerre, laguerref, laguerrel, legendre, legendref)
4637         (legendrel, riemann_zeta, riemann_zetaf, riemann_zetal, sph_bessel)
4638         (sph_besself, sph_bessell, sph_legendre, sph_legendref, sph_legendrel)
4639         (sph_neumann, sph_neumannf, sph_neumannl): Only add using-declarations
4640         when the special functions IS is enabled, not for C++17.
4641         * testsuite/26_numerics/headers/cmath/functions_global_c++17.cc:
4642         Replace with ...
4643         * testsuite/26_numerics/headers/cmath/functions_global.cc: New test,
4644         without checks for special functions in C++17.
4645         * testsuite/26_numerics/headers/cmath/special_functions_global.cc:
4646         New test.
4647
4648         PR libstdc++/88066
4649         * include/backward/hash_map: Use <> for includes not "".
4650         * include/backward/hash_set: Likewise.
4651         * include/backward/strstream: Likewise.
4652         * include/tr1/bessel_function.tcc: Likewise.
4653         * include/tr1/exp_integral.tcc: Likewise.
4654         * include/tr1/legendre_function.tcc: Likewise.
4655         * include/tr1/modified_bessel_func.tcc: Likewise.
4656         * include/tr1/riemann_zeta.tcc: Likewise.
4657
4658 2019-03-19  Jonathan Wakely  <jwakely@redhat.com>
4659
4660         * doc/xml/manual/allocator.xml: Link to table documenting evolution
4661         of extension allocators.
4662         * doc/xml/manual/evolution.xml: Use angle brackets for header names.
4663         Document new headers in 7.2, 8.1 and 9.1 releases.
4664         * doc/xml/manual/using.xml: Adjust link target for new_allocator.
4665         * doc/html/*: Regenerate.
4666
4667 2019-03-12  John David Anglin  <dave.anglin@bell.net>
4668
4669         PR libstdc++/89461
4670         * testsuite/lib/libstdc++.exp: Locate libatomic.
4671         * testsuite/lib/dg-options.exp (add_options_for_libatomic): New.
4672         * testsuite/20_util/shared_ptr/thread/default_weaktoshared.cc: Add
4673         libatomic options.
4674         * testsuite/20_util/shared_ptr/thread/mutex_weaktoshared.cc: Likewise.
4675         * testsuite/experimental/net/timer/waitable/cons.cc: Likewise.
4676         * testsuite/experimental/net/timer/waitable/dest.cc: Likewise.
4677         * testsuite/experimental/net/timer/waitable/ops.cc: Likewise.
4678
4679 2019-03-11  Jonathan Wakely  <jwakely@redhat.com>
4680
4681         PR libstdc++/89460
4682         * configure.ac: Check for sockatmark.
4683         * crossconfig.m4: Check for sockatmark.
4684         * config.h.in: Regenerate.
4685         * configure: Regenerate.
4686         * include/experimental/internet (address_v4::_S_hton): Rename
4687         overloaded functions to _S_hton_16 and _S_ntoh_16.
4688         (address_v4::_S_ntoh): Rename to _S_ntoh_16 and _S_ntoh_32.
4689         (basic_endpoint): Adjust calls to _S_hton and _S_ntoh.
4690         * include/experimental/socket (basic_socket::at_mark): Check
4691         _GLIBCXX_HAVE_SOCKATMARK.
4692
4693         * testsuite/29_atomics/atomic_flag/test_and_set/explicit-hle.cc: Use
4694         const variables instead of macros.
4695
4696         PR libstdc++/89629
4697         * libsupc++/hash_bytes.cc [__SIZEOF_SIZE_T__ == 8] (_Hash_bytes):
4698         Use correct type for len_aligned.
4699         * testsuite/20_util/hash/89629.cc: New test.
4700
4701 2019-03-11  Jakub Jelinek  <jakub@redhat.com>
4702
4703         PR libstdc++/89641
4704         * include/std/atomic (atomic<T>::store, atomic<T>::load,
4705         atomic<T>::exchange, atomic<T>::compare_exchange_weak,
4706         atomic<T>::compare_exchange_strong): Cast __m or __s and __f to int.
4707         * include/bits/atomic_base.h (__atomic_base<T>::operator++,
4708         __atomic_base<T>::operator--, __atomic_base<T>::operator+=,
4709         __atomic_base<T>::operator-=, __atomic_base<T>::operator&=,
4710         __atomic_base<T>::operator|=, __atomic_base<T>::operator^=,
4711         __atomic_base<T*>::operator++, __atomic_base<T*>::operator--,
4712         __atomic_base<T*>::operator+=, __atomic_base<T*>::operator-=): Cast
4713         memory_order_seq_cst to int.
4714
4715 2019-03-08  Jonathan Wakely  <jwakely@redhat.com>
4716
4717         * doc/xml/manual/using.xml: Use link element instead of xref.
4718         * doc/html/*: Regenerate.
4719
4720         * include/bits/fs_path.h (path::format): Add fixed underlying type.
4721
4722 2019-03-08  François Dumont  <fdumont@gcc.gnu.org>
4723
4724         PR libstdc++/89477
4725         * include/debug/map.h (map): Use _RequireNotAllocator to constrain
4726         parameters in deduction guides.
4727         * include/debug/multimap.h (multimap): Likewise.
4728         * include/debug/set.h (multimap): Likewise.
4729         * include/debug/multiset.h (multimap): Likewise.
4730         * include/debug/unordered_map (unordered_map): Likewise.
4731         (unordered_multimap): Likewise.
4732         * include/debug/unordered_set (unordered_set): Likewise.
4733         (unordered_multiset): Likewise.
4734
4735         PR libstdc++/89608
4736         * include/debug/unordered_map (unordered_map<>::_M_check_rehashed):
4737         Invalidate all iterators in case of rehash.
4738         (unordered_multimap<>::_M_check_rehashed): Likewise.
4739         * include/debug/unordered_set
4740         (unordered_set<>::_M_check_rehashed): Likewise.
4741         (unordered_multiset<>::_M_check_rehashed): Likewise.
4742         * testsuite/23_containers/unordered_set/debug/89608_neg.cc: New.
4743
4744 2019-03-07  Andreas Schwab  <schwab@suse.de>
4745
4746         * config/abi/post/riscv64-linux-gnu: New directory.
4747         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: New file.
4748
4749 2019-03-07  Jonathan Wakely  <jwakely@redhat.com>
4750
4751         * testsuite/20_util/function_objects/bind_front/1.cc: Change from
4752         compile test to run. Fix typo.
4753
4754         * doc/xml/manual/status_cxx2020.xml: Update C++20 status.
4755         * doc/html/*: Regenerate.
4756
4757         P0356R5 Simplified partial function application
4758         * include/std/functional [C++20] (_Bind_front, _Bind_front_t): Define
4759         helpers for bind_front.
4760         (bind_front, __cpp_lib_bind_front): Define.
4761         * testsuite/20_util/function_objects/bind_front/1.cc: New test.
4762
4763 2019-03-06  Jonathan Wakely  <jwakely@redhat.com>
4764
4765         * include/std/type_traits (__cpp_lib_bounded_array_traits): Define.
4766         * include/std/version (__cpp_lib_bounded_array_traits): Likewise.
4767         * testsuite/20_util/is_bounded_array/value.cc: Check for macro.
4768         * testsuite/20_util/is_unbounded_array/value.cc: Likewise.
4769
4770 2019-03-06  Edward Smith-Rowland  <3dw4rd@verizon.net>
4771
4772         PR libstdc++/86655 - std::assoc_legendre should not constrain
4773         the value of m (or x).
4774         * include/tr1/legendre_function.tcc (__assoc_legendre_p,
4775         __sph_legendre): If degree > order Don't throw, return 0.
4776         (__legendre_p, __assoc_legendre_p): Don't constrain x either.
4777         * testsuite/special_functions/02_assoc_legendre/pr86655.cc: New test.
4778         * testsuite/special_functions/20_sph_legendre/pr86655.cc: New test.
4779         * testsuite/tr1/5_numerical_facilities/special_functions/
4780         02_assoc_legendre/pr86655.cc: New test.
4781         * testsuite/tr1/5_numerical_facilities/special_functions/
4782         22_sph_legendre/pr86655.cc: New test.
4783
4784 2019-03-06  Ville Voutilainen  <ville.voutilainen@gmail.com>
4785
4786         Rewrite variant.
4787         Also PR libstdc++/85517
4788         * include/std/variant (__do_visit): New.
4789         (__variant_cast): Likewise.
4790         (__variant_cookie): Likewise.
4791         (__erased_*): Remove.
4792         (_Variant_storage::_S_vtable): Likewise.
4793         (_Variant_storage::__M_reset_impl): Adjust to use __do_visit.
4794         (_Variant_storage::__M_reset): Adjust.
4795         (__variant_construct): New.
4796         (_Copy_ctor_base(const _Copy_ctor_base&)): Adjust to use
4797         __variant_construct.
4798         (_Move_ctor_base(_Move_ctor_base&&)): Likewise.
4799         (_Move_ctor_base::__M_destructive_copy): New.
4800         (_Move_ctor_base::__M_destructive_move): Adjust to use
4801         __variant_construct.
4802         (_Copy_assign_base::operator=): Adjust to use __do_visit.
4803         (_Copy_assign_alias): Adjust to check both copy assignment
4804         and copy construction for triviality.
4805         (_Move_assign_base::operator=): Adjust to use __do_visit.
4806         (_Multi_array): Add support for visitors that accept and return
4807         a __variant_cookie.
4808         (__gen_vtable_impl::_S_apply_all_alts): Likewise.
4809         (__gen_vtable_impl::_S_apply_single_alt): Likewise.
4810         (__gen_vtable_impl::__element_by_index_or_cookie): New. Generate
4811         a __variant_cookie temporary for a variant that is valueless and..
4812         (__gen_vtable_impl::__visit_invoke): ..adjust here.
4813         (__gen_vtable::_Array_type): Conditionally make space for
4814         the __variant_cookie visitor case.
4815         (__variant_construct_by_index): New.
4816         (get_if): Adjust to use std::addressof.
4817         (relops): Adjust to use __do_visit.
4818         (variant): Add __variant_cast and __variant_construct_by_index
4819         as friends.
4820         (variant::emplace): Use _M_reset() and __variant_construct_by_index
4821         instead of self-destruction.
4822         (variant::swap): Adjust to use __do_visit.
4823         (visit): Reimplement in terms of __do_visit.
4824         (__variant_hash_call_base_impl::operator()): Adjust to use __do_visit.
4825         * testsuite/20_util/variant/compile.cc: Adjust.
4826         * testsuite/20_util/variant/run.cc: Likewise.
4827
4828 2019-03-06  Jonathan Wakely  <jwakely@redhat.com>
4829
4830         * include/bits/c++config.h (_cpp_lib_char8_t): Add L suffix to
4831         constant.
4832         * testsuite/experimental/feat-char8_t.cc: Likewise.
4833
4834          * include/std/type_traits [C++20] (is_bounded_array)
4835          (is_unbounded_array, is_bounded_array_v, is_unbounded_array_v):
4836          Define.
4837          * testsuite/20_util/is_bounded_array/requirements/
4838          explicit_instantiation.cc: New test.
4839          * testsuite/20_util/is_bounded_array/requirements/typedefs.cc: New
4840          test.
4841          * testsuite/20_util/is_bounded_array/value.cc: New test.
4842          * testsuite/20_util/is_unbounded_array/requirements/
4843          explicit_instantiation.cc: New test.
4844          * testsuite/20_util/is_unbounded_array/requirements/typedefs.cc: New
4845          * test.
4846          * testsuite/20_util/is_unbounded_array/value.cc: New test.
4847
4848         * include/bits/ptr_traits.h [C++20] (pointer_traits<T*>::pointer_to):
4849         Add constexpr.
4850         * testsuite/20_util/pointer_traits/pointer_to_constexpr.cc: New test.
4851
4852 2019-03-05  Jonathan Wakely  <jwakely@redhat.com>
4853
4854         * include/c_compatibility/math.h [C++20] (lerp): Add using
4855         declaration.
4856         * include/c_global/cmath [C++20] (__cpp_lib_interpolate): Define.
4857         (__lerp): Define function template to implement lerp.
4858         (lerp(float, float, float), lerp(double, double, double))
4859         (lerp(long double, long double, long double)): Define for C++20.
4860         * include/std/numeric [C++20] (__cpp_lib_interpolate): Define.
4861         (midpoint(T, T), midpoint(T*, T*)): Define.
4862         * include/std::version [C++20] (__cpp_lib_interpolate): Define.
4863         * testsuite/26_numerics/lerp.cc: New test.
4864         * testsuite/26_numerics/midpoint/floating.cc: New test.
4865         * testsuite/26_numerics/midpoint/integral.cc: New test.
4866         * testsuite/26_numerics/midpoint/pointer.cc: New test.
4867
4868 2019-03-04  Edward Smith-Rowland  <3dw4rd@verizon.net>
4869
4870         PR libstdc++/88996 Implement P0439R0
4871         Make std::memory_order a scoped enumeration.
4872         * include/bits/atomic_base.h: For C++20 make memory_order a scoped enum,
4873         add variables for the old enumerators.  Adjust calls.
4874         * testsuite/29_atomics/headers/atomic/types_std_c++2a.cc: New test.
4875         * testsuite/29_atomics/headers/atomic/types_std_c++2a_neg.cc: New test.
4876
4877 2019-03-04  Jonathan Wakely  <jwakely@redhat.com>
4878
4879         * testsuite/26_numerics/bit/bitops.rot/rotl.cc: Remove bogus dg-do
4880         directive.
4881
4882         * include/std/memory_resource (polymorphic_allocator): Add default
4883         template argument for C++20.
4884         (polymorphic_allocator::allocate_bytes)
4885         (polymorphic_allocator::deallocate_bytes)
4886         (polymorphic_allocator::allocate_object)
4887         (polymorphic_allocator::deallocate_object)
4888         (polymorphic_allocator::new_object)
4889         (polymorphic_allocator::delete_object): New member functions for
4890         C++20.
4891         * testsuite/20_util/polymorphic_allocator/allocate_object.cc: New
4892         test.
4893
4894 2019-03-03  Jonathan Wakely  <jwakely@redhat.com>
4895
4896         PR libstdc++/89562
4897         * src/filesystem/ops-common.h (do_copy_file): Open files in binary
4898         mode for mingw.
4899
4900 2019-03-01  Jonathan Wakely  <jwakely@redhat.com>
4901
4902         * testsuite/util/testsuite_allocator.h (__gnu_test::memory_resource)
4903         [!__cpp_sized_deallocation]: Do not pass size to operator delete.
4904
4905         * include/std/memory (uses_allocator_construction_args): New set of
4906         overloaded functions.
4907         (make_obj_using_allocator, uninitialized_construct_using_allocator):
4908         New functions.
4909         * include/std/memory_resource (polymorphic_allocator::construct)
4910         [__cplusplus > 201703l]: Replace all overloads with a single function
4911         using uses_allocator_construction_args.
4912         * testsuite/20_util/polymorphic_allocator/construct_c++2a.cc: New
4913         test.
4914         * testsuite/20_util/uses_allocator/make_obj.cc: New test.
4915
4916 2019-02-27  Jonathan Wakely  <jwakely@redhat.com>
4917
4918         PR libstdc++/89466
4919         * acinclude.m4 (GLIBCXX_CONFIGURE_DOCBOOK): Reorder check for local
4920         stylesheet directories before check for xsltproc. Try to use
4921         xmlcatalog to find local stylesheet directory before trying hardcoded
4922         paths. Add path used by suse to hardcoded paths. Adjust xsltproc
4923         check to look for the same stylesheet as doc/Makefile.am uses. Don't
4924         use xsltproc if xmlcatalog fails to find a local stylesheet.
4925         * configure.ac: Check for xmlcatalog.
4926         * Makefile.in: Regenerate.
4927         * configure: Likewise.
4928         * doc/Makefile.in: Likewise.
4929         * include/Makefile.in: Likewise.
4930         * libsupc++/Makefile.in: Likewise.
4931         * po/Makefile.in: Likewise.
4932         * python/Makefile.in: Likewise.
4933         * src/Makefile.in: Likewise.
4934         * src/c++11/Makefile.in: Likewise.
4935         * src/c++17/Makefile.in: Likewise.
4936         * src/c++98/Makefile.in: Likewise.
4937         * src/filesystem/Makefile.in: Likewise.
4938         * testsuite/Makefile.in: Likewise.
4939
4940 2019-02-26  Jonathan Wakely  <jwakely@redhat.com>
4941
4942         PR libstdc++/89477
4943         * include/bits/alloc_traits.h (_RequireNotAllocator): New helper for
4944         container deduction guides.
4945         * include/bits/hashtable.h (_RequireNotAllocatorOrIntegral): Likewise.
4946         * include/bits/stl_map.h (map): Use _RequireNotAllocator to constrain
4947         parameters in deduction guides.
4948         * include/bits/stl_multimap.h (multimap): Likewise.
4949         * include/bits/stl_multiset.h (multiset): Likewise.
4950         * include/bits/stl_queue.h (queue, priority_queue): Likewise.
4951         * include/bits/stl_set.h (set): Likewise.
4952         * include/bits/stl_stack.h (stack): Likewise.
4953         * include/bits/unordered_map.h (unordered_map, unordered_multimap):
4954         use _RequireNotAllocator and _RequireNotAllocatorOrIntegral to
4955         constrain parameters in deduction guides.
4956         * include/bits/unordered_set.h (unordered_set, unordered_multiset):
4957         Likewise.
4958         * testsuite/23_containers/map/cons/deduction.cc: Test additional
4959         deduction cases.
4960         * testsuite/23_containers/multiset/cons/deduction.cc: Likewise.
4961         * testsuite/23_containers/set/cons/deduction.cc: Likewise.
4962         * testsuite/23_containers/unordered_map/cons/deduction.cc: Likewise.
4963         * testsuite/23_containers/unordered_multimap/cons/deduction.cc:
4964         Likewise.
4965         * testsuite/23_containers/unordered_multiset/cons/deduction.cc:
4966         Likewise.
4967         * testsuite/23_containers/unordered_set/cons/deduction.cc: Likewise.
4968
4969         PR libstdc++/89416
4970         * include/bits/alloc_traits.h (__is_alloc_insertable_impl): Change
4971         to class template and partial specialization using void_t.
4972         (__is_copy_insertable, __is_move_insertable): Adjust base class.
4973
4974 2019-02-24  Jonathan Wakely  <jwakely@redhat.com>
4975
4976         PR libstdc++/89416
4977         * include/bits/alloc_traits.h (__is_alloc_insertable_impl): Make
4978         copy and move members public.
4979
4980 2019-02-23  Jonathan Wakely  <jwakely@redhat.com>
4981
4982         * include/std/type_traits (__underlying_type_impl): New helper to
4983         make underlying_type SFINAE-friendly.
4984         (underlying_type): Derive from __underlying_type_impl.
4985         * testsuite/20_util/underlying_type/requirements/typedefs-3.cc: New
4986         test.
4987
4988         PR libstdc++/89446
4989         * include/bits/char_traits.h (__constant_char_array): Check index is
4990         in range before dereferencing.
4991         (char_traits<char>::compare, char_traits<char>::find)
4992         (char_traits<char8_t>::compare, char_traits<char8_t>::find): Return
4993         immediately if n is zero.
4994         (char_traits<wchar_t>::compare, char_traits<wchar_t>::find): Likewise.
4995         Remove workarounds for PR 67026.
4996         * testsuite/21_strings/basic_string_view/operators/char/89446.cc:
4997         New test.
4998         * testsuite/21_strings/basic_string_view/operators/wchar_t/89446.cc:
4999         New test.
5000
5001 2019-02-22  Eric Botcazou  <ebotcazou@adacore.com>
5002
5003         * config/abi/post/sparc64-linux-gnu/baseline_symbols.txt: Adjust.
5004         * config/abi/post/sparc64-linux-gnu/32/baseline_symbols.txt: Likewise.
5005
5006 2019-02-22  Jakub Jelinek  <jakub@redhat.com>
5007
5008         PR libstdc++/89402
5009         * src/c++98/compatibility-ldbl.cc (_ZNKSt4hashIeEclEe): Change return
5010         type to std::size_t and argument to type to long double.
5011
5012 2019-02-22  Eric Botcazou  <ebotcazou@adacore.com>
5013
5014         * configure.host (abi_baseline_pair): Adjust for SPARC64/Linux.
5015         * config/abi/post/sparc64-linux-gnu: New directory.
5016         * config/abi/post/sparc64-linux-gnu/baseline_symbols.txt: New file.
5017         * config/abi/post/sparc64-linux-gnu/32: New directory.
5018         * config/abi/post/sparc64-linux-gnu/32/baseline_symbols.txt: New file.
5019
5020 2019-02-21  Jonathan Wakely  <jwakely@redhat.com>
5021
5022         * testsuite/29_atomics/headers/atomic/types_std_c++20.cc: New test.
5023         * testsuite/29_atomics/headers/atomic/types_std_c++20_neg.cc: New
5024         test.
5025
5026 2019-02-22  Tom Honermann  <tom@honermann.net>
5027
5028         * python/libstdcxx/v6/printers.py (register_type_printers): Add type
5029         printers for u8string and u8string_view.
5030
5031 2019-02-22  Tom Honermann  <tom@honermann.net>
5032
5033         * testsuite/18_support/byte/ops.cc: Validate
5034         std::to_integer<char8_t>, std::to_integer<char16_t>, and
5035         std::to_integer<char32_t>.
5036         * testsuite/18_support/numeric_limits/dr559.cc: Validate
5037         std::numeric_limits<char8_t>.
5038         * testsuite/18_support/numeric_limits/lowest.cc: Validate
5039         std::numeric_limits<char8_t>::lowest().
5040         * testsuite/18_support/numeric_limits/max_digits10.cc: Validate
5041         std::numeric_limits<char8_t>::max_digits10.
5042         * testsuite/18_support/type_info/fundamental.cc: Validate
5043         typeinfo for char8_t.
5044         * testsuite/20_util/from_chars/1_c++20_neg.cc: New test, validating
5045         std::from_chars with char8_t.
5046         * testsuite/20_util/hash/requirements/explicit_instantiation.cc:
5047         Validate explicit instantiation of std::hash<char8_t>.
5048         * testsuite/20_util/is_integral/value.cc: Validate
5049         std::is_integral<char8_t>.
5050         * testsuite/20_util/make_signed/requirements/typedefs-4.cc:
5051         Validate std::make_signed<char8_t>.
5052         * testsuite/21_strings/basic_string/cons/char/deduction.cc:
5053         Validate u8string construction from char8_t sources.
5054         * testsuite/21_strings/basic_string/types/pmr_typedefs.cc: Validate
5055         std::pmr::u8string.
5056         * testsuite/21_strings/basic_string_view/operations/compare/
5057         char/70483.cc: Validate substr operations on u8string_view.
5058         * testsuite/21_strings/basic_string_view/typedefs.cc: Validate that
5059         the u8string_view typedef is defined.
5060         * testsuite/21_strings/char_traits/requirements/
5061         constexpr_functions.cc: Validate char_traits<char8_t> constexpr
5062         member functions.
5063         * testsuite/21_strings/char_traits/requirements/
5064         constexpr_functions_c++17.cc: Validate char_traits<char8_t> C++17
5065         constexpr member functions.
5066         * testsuite/21_strings/headers/string/types_std_c++0x.cc: Validate
5067         that the u8string typedef is defined.
5068         * testsuite/22_locale/locale/cons/unicode.cc: Validate the presence
5069         of the std::codecvt<char16_t, char8_t, std::mbstate_t> and
5070         std::codecvt<char32_t, char8_t, std::mbstate_t> facets.
5071         * testsuite/29_atomics/atomic/cons/assign_neg.cc: Update line
5072         numbers.
5073         * testsuite/29_atomics/atomic/cons/copy_neg.cc: Likewise.
5074         * testsuite/29_atomics/atomic_integral/cons/assign_neg.cc:
5075         Likewise.
5076         * testsuite/29_atomics/atomic_integral/cons/copy_neg.cc: Likewise.
5077         * testsuite/29_atomics/atomic_integral/is_always_lock_free.cc:
5078         Validate std::atomic<char8_t>::is_always_lock_free
5079         * testsuite/29_atomics/atomic_integral/operators/bitwise_neg.cc:
5080         Update line numbers.
5081         * testsuite/29_atomics/atomic_integral/operators/decrement_neg.cc:
5082         Likewise.
5083         * testsuite/29_atomics/atomic_integral/operators/increment_neg.cc:
5084         Likewise.
5085         * testsuite/experimental/polymorphic_allocator/pmr_typedefs_string.cc:
5086         Validate std::experimental::pmr::u8string.
5087         * testsuite/experimental/string_view/typedefs.cc: Validate that the
5088         u8string_view typedef is defined.
5089         * testsuite/util/testsuite_common_types.h: Add char8_t, char16_t and
5090         char32_t to the typelists.
5091
5092 2019-02-22  Tom Honermann  <tom@honermann.net>
5093
5094         * include/ext/typelist.h: Constrain a partial specialization of
5095         typelist::detail::append_ to only match chain<T1,T2>.
5096
5097 2019-02-21  Jonathan Wakely  <jwakely@redhat.com>
5098
5099         PR libstdc++/89416
5100         * include/bits/alloc_traits.h (__is_alloc_insertable_impl): Replace
5101         class template with class. Replace move and copy member types with
5102         member alias templates, so they are only instantiated when needed.
5103         (__is_copy_insertable, __is_move_insertable): Adjust base class.
5104         * testsuite/23_containers/vector/modifiers/push_back/89130.cc: Enable
5105         test for C++11/14/17 as well.
5106         * testsuite/23_containers/vector/modifiers/push_back/89416.cc: New
5107         test.
5108
5109 2019-02-20  Jakub Jelinek  <jakub@redhat.com>
5110
5111         PR libstdc++/89402
5112         * src/c++98/compatibility-ldbl.cc (_ZNKSt4hashIeEclEe): Add
5113         _GLIBCXX_PURE to the alias declaration.
5114
5115 2019-02-19  Jonathan Wakely  <jwakely@redhat.com>
5116
5117         * testsuite/21_strings/basic_string/literals/types.cc
5118         [_GLIBCXX_USE_CHAR8_T]: Adjust expected string type for u8 literal.
5119         * testsuite/21_strings/basic_string/literals/values.cc
5120         [_GLIBCXX_USE_CHAR8_T]: Likewise.
5121         * testsuite/22_locale/codecvt/char16_t.cc: Adjust for u8 literals
5122         potentially having different type.
5123         * testsuite/22_locale/codecvt/char32_t.cc: Likewise.
5124         * testsuite/22_locale/codecvt/codecvt_utf8/79980.cc: Cast u8 literal
5125         to char.
5126         * testsuite/22_locale/codecvt/codecvt_utf8/wchar_t/1.cc: Likewise.
5127         * testsuite/22_locale/codecvt/utf8.cc: Likewise.
5128         * testsuite/22_locale/conversions/string/2.cc: Remove u8 prefix from
5129         string literals only using basic character set.
5130         * testsuite/22_locale/conversions/string/3.cc: Likewise. Cast other
5131         u8 literals to char.
5132         * testsuite/29_atomics/headers/atomic/macros.cc [_GLIBCXX_USE_CHAR8_T]:
5133         Test ATOMIC_CHAR8_T_LOCK_FREE.
5134         Add missing #error to ATOMIC_CHAR16_T_LOCK_FREE test.
5135         * testsuite/29_atomics/headers/atomic/types_std_c++0x.cc
5136         [_GLIBCXX_USE_CHAR8_T]: Check for std::atomic_char8_t.
5137         * testsuite/experimental/string_view/literals/types.cc
5138         [_GLIBCXX_USE_CHAR8_T]: Adjust expected string_view type for u8
5139         literal.
5140         * testsuite/experimental/string_view/literals/values.cc
5141         [_GLIBCXX_USE_CHAR8_T]: Likewise.
5142
5143 2019-02-19  Tom Honermann  <tom@honermann.net>
5144
5145         * testsuite/18_support/numeric_limits/char8_t.cc: New test cloned
5146         from char16_32_t.cc; validates numeric_limits<char8_t>.
5147         * testsuite/21_strings/basic_string/literals/types-char8_t.cc: New
5148         test cloned from types.cc; validates operator""s for char8_t
5149         returns u8string.
5150         * testsuite/21_strings/basic_string/literals/values-char8_t.cc: New
5151         test cloned from values.cc; validates construction and comparison
5152         of u8string values.
5153         * testsuite/21_strings/basic_string/requirements/
5154         /explicit_instantiation/char8_t/1.cc: New test cloned from
5155         char16_t/1.cc; validates explicit instantiation of
5156         basic_string<char8_t>.
5157         * testsuite/21_strings/basic_string_view/literals/types-char8_t.cc:
5158         New test cloned from types.cc; validates operator""sv for char8_t
5159         returns u8string_view.
5160         * testsuite/21_strings/basic_string_view/literals/
5161         values-char8_t.cc: New test cloned from values.cc; validates
5162         construction and comparison of u8string_view values.
5163         * testsuite/21_strings/basic_string_view/requirements/
5164         explicit_instantiation/char8_t/1.cc: New test cloned from
5165         char16_t/1.cc; validates explicit instantiation of
5166         basic_string_view<char8_t>.
5167         * testsuite/21_strings/char_traits/requirements/char8_t/65049.cc:
5168         New test cloned from char16_t/65049.cc; validates that
5169         char_traits<char8_t> is not vulnerable to the concerns in PR65049.
5170         * testsuite/21_strings/char_traits/requirements/char8_t/
5171         typedefs.cc: New test cloned from char16_t/typedefs.cc; validates
5172         that char_traits<char8_t> member typedefs are present and correct.
5173         * testsuite/21_strings/char_traits/requirements/
5174         explicit_instantiation/char8_t/1.cc: New test cloned from
5175         char16_t/1.cc; validates explicit instantiation of
5176         char_traits<char8_t>.
5177         * testsuite/22_locale/codecvt/char16_t-char8_t.cc: New test cloned
5178         from char16_t.cc: validates
5179         codecvt<char16_t, char8_t, mbstate_t>.
5180         * testsuite/22_locale/codecvt/char32_t-char8_t.cc: New test cloned
5181         from char32_t.cc: validates
5182         codecvt<char32_t, char8_t, mbstate_t>.
5183         * testsuite/22_locale/codecvt/utf8-char8_t.cc: New test cloned from
5184         utf8.cc; validates codecvt<char16_t, char8_t, std::mbstate_t> and
5185         codecvt<char32_t, char8_t, std::mbstate_t>.
5186         * testsuite/27_io/filesystem/path/native/string-char8_t.cc: New
5187         test cloned from string.cc; validates filesystem::path construction
5188         from char8_t input.
5189         * testsuite/experimental/feat-char8_t.cc: New test; validates that
5190         the __cpp_lib_char8_t feature test macro is defined with the
5191         correct value.
5192         * testsuite/experimental/filesystem/path/native/string-char8_t.cc:
5193         New test cloned from string.cc; validates filesystem::path
5194         construction from char8_t input.
5195         * testsuite/experimental/string_view/literals/types-char8_t.cc: New
5196         test cloned from types.cc; validates operator""sv for char8_t
5197         returns u8string_view.
5198         * testsuite/experimental/string_view/literals/values-char8_t.cc:
5199         New test cloned from values.cc; validates construction and
5200         comparison of u8string_view values.
5201         * testsuite/experimental/string_view/requirements/
5202         explicit_instantiation/char8_t/1.cc: New test cloned from
5203         char16_t/1.cc; validates explicit instantiation of
5204         basic_string_view<char8_t>.
5205         * testsuite/ext/char8_t/atomic-1.cc: New test; validates that
5206         ATOMIC_CHAR8_T_LOCK_FREE is not defined if char8_t support is not
5207         enabled.
5208
5209 2019-02-19  Tom Honermann  <tom@honermann.net>
5210
5211         P0482R5 char8_t: Standard library support
5212         * config/abi/pre/gnu-versioned-namespace.ver (CXXABI_2.0): Add
5213         typeinfo symbols for char8_t.
5214         * config/abi/pre/gnu.ver: Add CXXABI_1.3.12.
5215         (GLIBCXX_3.4.26): Add symbols for specializations of
5216         numeric_limits and codecvt that involve char8_t.
5217         (CXXABI_1.3.12): Add typeinfo symbols for char8_t.
5218         * include/bits/atomic_base.h: Add atomic_char8_t.
5219         * include/bits/basic_string.h: Add std::hash<u8string> and
5220         operator""s(const char8_t*, size_t).
5221         * include/bits/c++config: Define _GLIBCXX_USE_CHAR8_T and
5222         __cpp_lib_char8_t.
5223         * include/bits/char_traits.h: Add char_traits<char8_t>.
5224         * include/bits/codecvt.h: Add
5225         codecvt<char16_t, char8_t, mbstate_t>,
5226         codecvt<char32_t, char8_t, mbstate_t>,
5227         codecvt_byname<char16_t, char8_t, mbstate_t>, and
5228         codecvt_byname<char32_t, char8_t, mbstate_t>.
5229         * include/bits/cpp_type_traits.h: Add __is_integer<char8_t> to
5230         recognize char8_t as an integral type.
5231         * include/bits/fs_path.h: (path::__is_encoded_char): Recognize
5232         char8_t.
5233         (path::u8string): Return std::u8string when char8_t support is
5234         enabled.
5235         (path::generic_u8string): Likewise.
5236         (path::_S_convert): Handle conversion from char8_t input.
5237         (path::_S_str_convert): Likewise.
5238         * include/bits/functional_hash.h: Add hash<char8_t>.
5239         * include/bits/locale_conv.h (__str_codecvt_out): Add overloads for
5240         char8_t.
5241         * include/bits/locale_facets.h (_GLIBCXX_NUM_UNICODE_FACETS): Bump
5242         for new char8_t specializations.
5243         * include/bits/localefwd.h: Add missing declarations of
5244         codecvt<char16_t, char, mbstate_t> and
5245         codecvt<char32_t, char, mbstate_t>.  Add char8_t declarations
5246         codecvt<char16_t, char8_t, mbstate_t> and
5247         codecvt<char32_t, char8_t, mbstate_t>.
5248         * include/bits/postypes.h: Add u8streampos
5249         * include/bits/stringfwd.h: Add declarations of
5250         char_traits<char8_t> and u8string.
5251         * include/c_global/cstddef: Add __byte_operand<char8_t>.
5252         * include/experimental/bits/fs_path.h (path::__is_encoded_char):
5253         Recognize char8_t.
5254         (path::u8string): Return std::u8string when char8_t support is
5255         enabled.
5256         (path::generic_u8string): Likewise.
5257         (path::_S_convert): Handle conversion from char8_t input.
5258         (path::_S_str_convert): Likewise.
5259         * include/experimental/string: Add u8string.
5260         * include/experimental/string_view: Add u8string_view,
5261         hash<experimental::u8string_view>, and
5262         operator""sv(const char8_t*, size_t).
5263         * include/std/atomic: Add atomic<char8_t> and atomic_char8_t.
5264         * include/std/charconv (__is_int_to_chars_type): Recognize char8_t
5265         as a character type.
5266         * include/std/limits: Add numeric_limits<char8_t>.
5267         * include/std/string_view: Add u8string_view,
5268         hash<experimental::u8string_view>, and
5269         operator""sv(const char8_t*, size_t).
5270         * include/std/type_traits: Add __is_integral_helper<char8_t>,
5271         __make_unsigned<char8_t>, and __make_signed<char8_t>.
5272         * libsupc++/atomic_lockfree_defines.h: Define
5273         ATOMIC_CHAR8_T_LOCK_FREE.
5274         * src/c++11/Makefile.am: Compile with -fchar8_t when compiling
5275         codecvt.cc and limits.cc so that char8_t specializations of
5276         numeric_limits and codecvt and emitted.
5277         * src/c++11/Makefile.in: Likewise.
5278         * src/c++11/codecvt.cc: Define members of
5279         codecvt<char16_t, char8_t, mbstate_t>,
5280         codecvt<char32_t, char8_t, mbstate_t>,
5281         codecvt_byname<char16_t, char8_t, mbstate_t>, and
5282         codecvt_byname<char32_t, char8_t, mbstate_t>.
5283         * src/c++11/limits.cc: Define members of
5284         numeric_limits<char8_t>.
5285         * src/c++98/Makefile.am: Compile with -fchar8_t when compiling
5286         locale_init.cc and localename.cc.
5287         * src/c++98/Makefile.in: Likewise.
5288         * src/c++98/locale_init.cc: Add initialization for the
5289         codecvt<char16_t, char8_t, mbstate_t> and
5290         codecvt<char32_t, char8_t, mbstate_t> facets.
5291         * src/c++98/localename.cc: Likewise.
5292         * testsuite/util/testsuite_abi.cc: Validate ABI bump.
5293
5294 2019-02-18  Wilco Dijkstra  <wdijkstr@arm.com>
5295
5296         * 27_io/filesystem/operations/all.cc: Add dg-require-filesystem-ts.
5297         * 27_io/filesystem/operations/resize_file.cc: Likewise.
5298         * 27_io/filesystem/path/generation/normal2.cc: Likewise.
5299
5300 2019-02-14  Jonathan Wakely  <jwakely@redhat.com>
5301
5302         * doc/xml/manual/status_cxx2020.xml: Update P0887R1 status.
5303         * doc/html/*: Regenerate.
5304
5305         * doc/xml/manual/status_cxx2017.xml: Add P0063R3 to status table.
5306         * doc/html/*: Regenerate.
5307
5308         * doc/xml/manual/intro.xml: Document LWG 2586 status.
5309         * include/bits/uses_allocator.h (__uses_alloc): Use const lvalue
5310         allocator type in is_constructible checks.
5311         * testsuite/20_util/scoped_allocator/69293_neg.cc: Adjust dg-error.
5312         * testsuite/20_util/scoped_allocator/dr2586.cc: New test.
5313         * testsuite/20_util/tuple/cons/allocators.cc: Add test using
5314         problematic type from LWG 2586 discussion.
5315         * testsuite/20_util/uses_allocator/69293_neg.cc: Adjust dg-error.
5316         * testsuite/20_util/uses_allocator/cons_neg.cc: Likewise.
5317
5318         * configure.ac: Check for C11 timespec_get function.
5319         * crossconfig.m4 (freebsd, linux, gnu, cygwin, solaris, netbsd)
5320         (openbsd): Likewise
5321         * config.h.in: Regenerate.
5322         * configure: Regenerate.
5323         * include/c_global/ctime (timespec, timespec_get): Add to namespace
5324         std for C++17 and up.
5325
5326         * doc/xml/manual/intro.xml: Document LWG 2537 status.
5327         * include/bits/stl_queue.h
5328         (priority_queue(const Compare&, const Container&, const Alloc&))
5329         (priority_queue(const Compare&, Container&&, const Alloc&)): Call
5330         make_heap.
5331         * testsuite/23_containers/priority_queue/dr2537.cc: New test.
5332
5333         * doc/xml/manual/intro.xml: Document LWG 2566 status.
5334         * include/bits/stl_queue.h (queue, priority_queue): Add static
5335         assertions to enforce LWG 2566 requirement on value_type.
5336         * include/bits/stl_stack.h (stack): Likewise.
5337
5338         PR middle-end/89303
5339         * testsuite/20_util/enable_shared_from_this/89303.cc: New test.
5340
5341         * doc/xml/manual/intro.xml: Document LWG 2735 status.
5342         * include/bits/std_abs.h: Add comment about LWG 2735.
5343         * testsuite/26_numerics/headers/cstdlib/dr2735.cc: New test.
5344
5345 2019-02-13  Jonathan Wakely  <jwakely@redhat.com>
5346
5347         PR libstdc++/89345
5348         * include/std/version [__cpp_impl_destroying_delete]
5349         (__cpp_lib_destroying_delete): Only define for C++2a and later.
5350         * libsupc++/new [__cpp_impl_destroying_delete]
5351         (__cpp_lib_destroying_delete): Likewise.
5352         (destroying_delete_t, destroying_delete): Likewise, but define even
5353         when __cpp_impl_destroying_delete is not defined.
5354         * testsuite/18_support/destroying_delete.cc: New test.
5355
5356 2019-02-11  Jonathan Wakely  <jwakely@redhat.com>
5357
5358         PR libstdc++/89023
5359         * testsuite/17_intro/headers/c++2011/parallel_mode.cc: New test.
5360         * testsuite/17_intro/headers/c++2014/parallel_mode.cc: New test.
5361         * testsuite/17_intro/headers/c++2017/parallel_mode.cc: New test.
5362         * testsuite/28_regex/headers/regex/parallel_mode.cc: Remove.
5363
5364 2019-02-09  Jonathan Wakely  <jwakely@redhat.com>
5365
5366         PR libstdc++/71044
5367         * include/bits/fs_path.h (path::has_root_name)
5368         (path::has_root_directory, path::has_root_path)
5369         (path::has_relative_path, path::has_parent_path)
5370         (path::has_filename, path::has_stem, path::has_extension)
5371         (path::is_absolute, path::is_relative, path::_M_find_extension): Add
5372         noexcept.
5373         * src/c++17/fs_path.cc (path::has_root_name)
5374         (path::has_root_directory, path::has_root_path)
5375         (path::has_relative_path, path::has_parent_path)
5376         (path::has_filename, path::_M_find_extension): Add noexcept.
5377
5378 2019-02-06  Jonathan Wakely  <jwakely@redhat.com>
5379
5380         PR libstdc++/89102 (partial)
5381         * include/std/type_traits (common_type<>): Define.
5382         (common_type<T>): Derive from common_type<T, T>.
5383         * testsuite/20_util/common_type/requirements/explicit_instantiation.cc:
5384         Test zero-length template argument list.
5385         * testsuite/20_util/common_type/requirements/sfinae_friendly_1.cc:
5386         Test additional single argument cases.
5387         * testsuite/20_util/common_type/requirements/sfinae_friendly_2.cc:
5388         Adjust expected error.
5389
5390 2019-02-05  Jonathan Wakely  <jwakely@redhat.com>
5391
5392         PR libstdc++/89128
5393         * include/bits/stl_queue.h (queue, priority_queue): Add deduction
5394         guides.
5395         * include/bits/stl_stack.h (stack): Likewise.
5396         * testsuite/23_containers/priority_queue/deduction.cc: New test.
5397         * testsuite/23_containers/queue/deduction.cc: New test.
5398         * testsuite/23_containers/stack/deduction.cc: New test.
5399
5400         PR libstdc++/89194
5401         * include/std/type_traits (__is_convertible_helper)
5402         (__is_convertible_helper<_From, _To, false>): Revert changes to
5403         support is_nothrow_convertible.
5404         (__is_nt_convertible_helper): New helper.
5405         (is_nothrow_convertible): Use __is_nt_convertible_helper.
5406
5407         * testsuite/23_containers/vector/modifiers/push_back/49836.cc: Restore
5408         use of CopyConsOnlyType, but also test DelAnyAssign for completeness.
5409
5410         PR libstdc++/89130
5411         * include/bits/alloc_traits.h (__is_copy_insertable_impl): Rename to
5412         __is_alloc_insertable_impl. Replace single type member with two
5413         members, one for each of copy and move insertable.
5414         (__is_move_insertable): New trait for internal use.
5415         * include/bits/stl_vector.h (vector::_S_nothrow_relocate(true_type))
5416         (vector::_S_nothrow_relocate(true_type)): New functions to
5417         conditionally check if __relocate_a can throw.
5418         (vector::_S_use_relocate()): Dispatch to _S_nothrow_relocate based
5419         on __is_move_insertable.
5420         (vector::_S_do_relocate): New overloaded functions to conditionally
5421         call __relocate_a.
5422         (vector::_S_relocate): New function that dispatches to _S_do_relocate
5423         based on _S_use_relocate.
5424         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
5425         (vector::_M_default_append): Call _S_relocate instead of __relocate_a.
5426         * testsuite/23_containers/vector/modifiers/push_back/89130.cc: New.
5427
5428         PR libstdc++/89090
5429         * include/bits/stl_uninitialized.h (__relocate_a_1): Make unused
5430         parameter unnamed. Add message to static assertion.
5431         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
5432         (vector::_M_default_append): Use _GLIBCXX17_CONSTEXPR for if constexpr
5433         in C++11 code.
5434
5435 2019-02-05  Marc Glisse  <marc.glisse@inria.fr>
5436
5437         PR libstdc++/87106
5438         * include/bits/stl_uninitialized.h (__is_trivially_relocatable):
5439         Rename...
5440         (__is_bitwise_relocatable): ... to this.
5441         (__relocate_a_1): Adapt.
5442         * include/bits/stl_deque.h (__is_trivially_relocatable): Rename...
5443         (__is_bitwise_relocatable): ... to this.
5444
5445 2019-01-30  Jonathan Wakely  <jwakely@redhat.com>
5446
5447         PR libstdc++/89117
5448         * src/c++17/fs_path.cc (path::replace_extension): Erase extension from
5449         final component as well as from _M_pathname. Append the dot using
5450         operator+= instead of only to _M_pathname.
5451         (path::_M_find_extension): Reformat slightly.
5452         * testsuite/27_io/filesystem/path/modifiers/replace_extension.cc:
5453         Add more test cases.
5454
5455 2019-01-30  Ulrich Drepper  <drepper@redhat.com>
5456
5457         * doc/xml/manual/status_cxx2020.xml: Update P0600 entry.
5458
5459 2019-01-29  Jonathan Wakely  <jwakely@redhat.com>
5460
5461         * testsuite/26_numerics/headers/complex/synopsis.cc: Remove incorrect
5462         constexpr specifiers from arg and proj.
5463
5464         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Add missing exports for
5465         __shared_ptr instantiations used by gcc4-compatible ABI.
5466
5467         * include/experimental/forward_list (experimental::erase): Qualify
5468         call to erase_if.
5469         * include/experimental/list (experimental::erase): Likewise.
5470         * include/std/forward_list (std::erase): Likewise.
5471         * include/std/list (std::erase): Likewise.
5472
5473         * testsuite/20_util/reference_wrapper/result_type.cc: Disable for
5474         C++2a.
5475         * testsuite/20_util/reference_wrapper/typedefs-2.cc: Likewise.
5476         * testsuite/20_util/reference_wrapper/typedefs-3.cc: Likewise.
5477         * testsuite/20_util/reference_wrapper/typedefs.cc: Likewise.
5478         * testsuite/30_threads/async/54297.cc: Suppress nodiscard warning.
5479         * testsuite/ext/array_allocator/26875.cc: Likewise.
5480         * testsuite/ext/pool_allocator/allocate_chunk.cc: Likewise.
5481         * testsuite/util/replacement_memory_operators.h: Likewise.
5482         * testsuite/util/testsuite_allocator.h: Likewise.
5483
5484         * include/std/memory_resource (__pool_resource::_M_unpooled): Use
5485         normal mode vector, even for debug mode.
5486         * include/std/vector [_GLIBCXX_DEBUG] (_GLIBCXX_STD_C::pmr::vector):
5487         Define alias template for normal mode vector.
5488
5489 2019-01-28  Jonathan Wakely  <jwakely@redhat.com>
5490
5491         PR libstdc++/68737
5492         * config/locale/generic/c_locale.h (__convert_from_v)
5493         [_GLIBCXX_USE_C99_STDIO]: Also check _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
5494         * config/os/hpux/os_defines.h: Define _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
5495         * include/bits/locale_facets.tcc (num_put::_M_insert_float)
5496         [_GLIBCXX_USE_C99_STDIO]: Also check _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
5497
5498 2019-01-24  Jonathan Wakely  <jwakely@redhat.com>
5499
5500         PR libstdc++/88840
5501         * include/bits/stl_vector.h (vector::__use_relocate): Replace static
5502         data member with static member function _S_use_relocate().
5503         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
5504         (vector::_M_default_append): Use _S_use_relocate() instead of
5505         __use_relocate.
5506
5507         * testsuite/27_io/filesystem/path/compare/strings.cc: Only compare
5508         sign of results.
5509
5510 2019-01-22  Jonathan Wakely  <jwakely@redhat.com>
5511
5512         PR libstdc++/88740
5513         * testsuite/util/testsuite_hooks.h [stderr] (VERIFY): Use fprintf to
5514         write to stderr instead of using printf.
5515
5516 2019-01-21  Jakub Jelinek  <jakub@redhat.com>
5517
5518         PR libstdc++/86590
5519         * include/bits/char_traits.h (__constant_string_p,
5520         __constant_char_array_p): Use __builtin_is_constant_evaluated if
5521         available.
5522
5523 2019-01-20  Ulrich Drepper  <drepper@redhat.com>
5524
5525         Implement C++20 P0600r1.
5526         * include/backward/hash_map: Add nodiscard attribute to empty.
5527         * include/backward/hash_set: Likewise.
5528         * backward/hashtable.h: Likewise.
5529         * include/bits/basic_string.h: Likewise.
5530         * include/bits/forward_list.h: Likewise.
5531         * include/bits/hashtable.h: Likewise.
5532         * include/bits/regex.h: Likewise.
5533         * include/bits/stl_deque.h: Likewise.
5534         * include/bits/stl_list.h: Likewise.
5535         * include/bits/stl_map.h: Likewise.
5536         * include/bits/stl_multimap.h: Likewise.
5537         * include/bits/stl_multiset.h: Likewise.
5538         * include/bits/stl_queue.h: Likewise.
5539         * include/bits/stl_set.h: Likewise.
5540         * include/bits/stl_stack.h: Likewise.
5541         * include/bits/stl_tree.h: Likewise.
5542         * include/bits/stl_vector.h: Likewise.
5543         * include/bits/unordered_map.h: Likewise.
5544         * include/bits/unordered_set.h: Likewise.
5545         * include/debug/array: Likewise.
5546         * include/experimental/any: Likewise.
5547         * include/experimental/bits/fs_path.h: Likewise.
5548         * include/experimental/internet: Likewise.
5549         * include/experimental/string_view: Likewise.
5550         * include/ext/pb_ds/detail/bin_search_tree_/info_fn_imps.hpp:
5551         Likewise.
5552         * include/ext/pb_ds/detail/binary_heap_/binary_heap_.hpp:
5553         Likewise.
5554         * include/ext/pb_ds/detail/binary_heap_/info_fn_imps.hpp:
5555         Likewise.
5556         * include/ext/pb_ds/detail/cc_hash_table_map_/cc_ht_map_.hpp:
5557         Likewise.
5558         * include/ext/pb_ds/detail/cc_hash_table_map_/info_fn_imps.hpp:
5559         Likewise.
5560         * include/ext/pb_ds/detail/cc_hash_table_map_/size_fn_imps.hpp:
5561         Likewise.
5562         * include/ext/pb_ds/detail/gp_hash_table_map_/gp_ht_map_.hpp:
5563         Likewise.
5564         * include/ext/pb_ds/detail/gp_hash_table_map_/info_fn_imps.hpp:
5565         Likewise.
5566         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/
5567         info_fn_imps.hpp: Likewise.
5568         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/
5569         left_child_next_sibling_heap_.hpp: Likewise.
5570         * include/ext/pb_ds/detail/list_update_map_/info_fn_imps.hpp:
5571         Likewise.
5572         * include/ext/pb_ds/detail/list_update_map_/lu_map_.hpp:
5573         Likewise.
5574         * include/ext/pb_ds/detail/ov_tree_map_/info_fn_imps.hpp:
5575         Likewise.
5576         * include/ext/pb_ds/detail/ov_tree_map_/ov_tree_map_.hp:
5577         Likewise.
5578         * include/ext/pb_ds/detail/pat_trie_/info_fn_imps.hpp:
5579         Likewise.
5580         * include/ext/pb_ds/detail/pat_trie_/pat_trie_.hpp:
5581         Likewise.
5582         * include/ext/pb_ds/detail/rc_binomial_heap_/rc.hpp:
5583         Likewise.
5584         * include/ext/pb_ds/detail/tree_trace_base.hpp: Likewise.
5585         * include/ext/pb_ds/trie_policy.hpp: Likewise.
5586         * include/ext/rope: Likewise.
5587         * include/ext/slist: Likewise.
5588         * include/ext/vstring.h: Likewise.
5589         * include/profile/array: Likewise.
5590         * include/std/array: Likewise.
5591         * include/tr1/array: Likewise.
5592         * include/tr1/hashtable.h: Likewise.
5593         * include/tr1/regex: Likewise.
5594         * include/tr2/dynamic_bitset: Likewise.
5595         * include/bits/alloc_traits.h: Add nodiscard attribute to
5596         allocate.
5597         * include/experimental/memory_resource: Likewise.
5598         * include/ext/alloc_traits.h: Likewise.
5599         * include/ext/array_allocator.h: Likewise.
5600         * include/ext/bitmap_allocator.h: Likewise.
5601         * include/ext/debug_allocator.h: Likewise.
5602         * include/ext/extptr_allocator.h: Likewise.
5603         * include/ext/mt_allocator.h: Likewise.
5604         * include/ext/new_allocator.h: Likewise.
5605         * include/ext/pool_allocator.h: Likewise.
5606         * include/ext/throw_allocator.h: Likewise.
5607         * include/std/scoped_allocator: Likewise.
5608         * libsupc++/eh_alloc.cc: Likewise.
5609         * include/std/future: Add nodiscard attribute to async.
5610         * libsupc++/new: Add nodiscard attribute to new.
5611
5612 2019-01-18  Jonathan Wakely  <jwakely@redhat.com>
5613
5614         PR libstdc++/87514
5615         PR libstdc++/87520
5616         PR libstdc++/88782
5617         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export new symbol.
5618         * include/bits/shared_ptr.h
5619         (shared_ptr(_Sp_make_shared_tag, const Alloc&, Args&&...))
5620         (allocate_shared): Change to use new tag type.
5621         * include/bits/shared_ptr_base.h (_Sp_make_shared_tag::_S_eq):
5622         Declare new member function.
5623         (_Sp_alloc_shared_tag): Define new type.
5624         (_Sp_counted_ptr_inplace): Declare __shared_count<_Lp> as a friend.
5625         (_Sp_counted_ptr_inplace::_M_get_deleter) [!__cpp_rtti]: Use
5626         _Sp_make_shared_tag::_S_eq to check type_info.
5627         (__shared_count(Ptr, Deleter),__shared_count(Ptr, Deleter, Alloc)):
5628         Constrain to prevent being called with _Sp_alloc_shared_tag.
5629         (__shared_count(_Sp_make_shared_tag, const _Alloc&, Args&&...)):
5630         Replace constructor with ...
5631         (__shared_count(Tp*&, _Sp_alloc_shared_tag<_Alloc>, Args&&...)): Use
5632         reference parameter so address of the new object can be returned to
5633         the caller. Obtain the allocator from the tag type.
5634         (__shared_ptr(_Sp_make_shared_tag, const Alloc&, Args&&...)): Replace
5635         constructor with ...
5636         (__shared_ptr(_Sp_alloc_shared_tag<Alloc>, Args&&...)): Pass _M_ptr
5637         to the __shared_count constructor.
5638         (__allocate_shared): Change to use new tag type.
5639         * src/c++11/shared_ptr.cc (_Sp_make_shared_tag::_S_eq): Define.
5640
5641 2019-01-17  Jonathan Wakely  <jwakely@redhat.com>
5642
5643         * src/c++17/fs_ops.cc
5644         (equivalent(const path&, const path&, error_code&))
5645         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use GetFileInformationByHandle to
5646         compare files instead of relying on incomplete info returned by stat.
5647
5648         PR libstdc++/88884
5649         * src/c++17/fs_ops.cc (absolute(const path&, error_code&)): Do nothing
5650         if the path is already absolute.
5651         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Normalize root-directory.
5652         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Pass error_code to current_path.
5653
5654         PR libstdc++/88881
5655         * src/c++17/fs_ops.cc (canonical(const path&, error_code&))
5656         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Normalize path, to match behaviour
5657         of filesystem::exists.
5658         (create_directories(const path&, error_code&)): Add assertions.
5659         (status(const path&, error_code&)) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]:
5660         Add workaround for bug in _wstat for paths with trailing slash.
5661         * testsuite/27_io/filesystem/operations/create_directories.cc: Adjust
5662         for expected behaviour on mingw.
5663         * testsuite/experimental/filesystem/operations/create_directories.cc:
5664         Likewise.
5665         * testsuite/27_io/filesystem/operations/temp_directory_path.cc: Use
5666         "TMP" instead of "TMPDIR" and clean environment before each test. Do
5667         not test permissions on mingw targets.
5668
5669 2019-01-16  Jonathan Wakely  <jwakely@redhat.com>
5670
5671         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Add exports for fstream
5672         constructors and open members taking wide strings. Fix patterns for
5673         filesystem::path members to match wstring_view parameters. Add
5674         exports for shared_ptr members used by directory iterators.
5675         * src/c++17/fs_ops.cc (remove(const path&, error_code&)): Clear the
5676         error code parameter if the file doesn't exist.
5677         * src/filesystem/ops.cc (remove(const path&, error_code&)):
5678         Likewise.
5679         * testsuite/27_io/filesystem/operations/canonical.cc: Fix expected
5680         values for mingw targets, where "/" is not an absolute path. Do not
5681         test symlinks on mingw targets.
5682         * testsuite/experimental/filesystem/operations/canonical.cc: Likewise.
5683         * testsuite/27_io/filesystem/operations/copy.cc: Do not test symlinks
5684         on mingw targets.
5685         * testsuite/experimental/filesystem/operations/copy.cc: Likewise.
5686         * testsuite/27_io/filesystem/operations/create_directories.cc: Check
5687         that each component of the path is created.
5688         * testsuite/experimental/filesystem/operations/create_directories.cc:
5689         Likewise.
5690         * testsuite/27_io/filesystem/operations/exists.cc: Do not test
5691         permissions on mingw targets.
5692         * testsuite/experimental/filesystem/operations/exists.cc: Likewise.
5693         * testsuite/27_io/filesystem/operations/is_empty.cc: Likewise.
5694         * testsuite/experimental/filesystem/operations/is_empty.cc: Likewise.
5695         * testsuite/27_io/filesystem/operations/permissions.cc: XFAIL for
5696         mingw targets.
5697         * testsuite/experimental/filesystem/operations/permissions.cc:
5698         Likewise.
5699         * testsuite/27_io/filesystem/operations/remove.cc: Do not test
5700         symlinks or permissions on mingw targets.
5701         * testsuite/experimental/filesystem/operations/remove.cc: Likewise.
5702         * testsuite/27_io/filesystem/operations/remove_all.cc: Do not test
5703         symlinks on mingw targets.
5704         * testsuite/experimental/filesystem/operations/remove_all.cc:
5705         Likewise.
5706         * testsuite/27_io/filesystem/operations/status.cc: Do not test
5707         permissions on mingw targets.
5708         * testsuite/27_io/filesystem/operations/weakly_canonical.cc: Do not
5709         test symlinks on mingw targets.
5710         * testsuite/experimental/filesystem/operations/space.cc: Fix test
5711         for mingw targets.
5712
5713 2019-02-14  Ulrich Drepper  <drepper@redhat.com>
5714
5715         PR libstdc++/88738
5716         Warn about unused comparisons of shared_ptr/unique_ptr
5717         * include/bits/c++config [_GLIBCXX_NODISCARD]: Define.
5718         * include/bits/shared_ptr.h: Use it for operator ==, !=,
5719         <, <=, >, >= for shared_ptr.
5720         * include/bits/unique_ptr.h: Likewise for unique_ptr.
5721
5722 2019-01-15  Jonathan Wakely  <jwakely@redhat.com>
5723
5724         * include/bits/shared_ptr_base.h (__cpp_lib_shared_ptr_arrays): Define
5725         as 201611L, because P0497R0 changes are supported.
5726         * include/std/version (__cpp_lib_shared_ptr_arrays): Likewise.
5727
5728         * include/bits/erase_if.h [__cplusplus > 201703L]
5729         (__cpp_lib_erase_if): Only define for C++2a.
5730         * include/std/iterator [__cplusplus >= 201402L && !_GLIBCXX_DEBUG]
5731         (__cpp_lib_null_iterators): Define.
5732         * include/std/version [__cplusplus >= 201402L && !_GLIBCXX_DEBUG]
5733         (__cpp_lib_null_iterators): Define.
5734         [__cpp_impl_destroying_delete] (__cpp_lib_destroying_delete): Define.
5735
5736         * doc/xml/manual/status_cxx2017.xml: Document P0032R3 and P0307R2
5737         status.
5738         * include/bits/stl_uninitialized.h (__cpp_lib_raw_memory_algorithms):
5739         Define.
5740         * include/std/any (__cpp_lib_any): Define as 201606L, because P0032R3
5741         changes are supported.
5742         * include/std/optional (__cpp_lib_optional): Likewise.
5743         * include/std/variant (__cpp_lib_variant): Likewise.
5744         * include/std/version [!__STRICT_ANSI__]
5745         (__cpp_lib_uncaught_exceptions): Define as long integer.
5746         [__cplusplus >= 201703L] (__cpp_lib_any)
5747         (__cpp_lib_raw_memory_algorithms, __cpp_lib_uncaught_exceptions)
5748         (__cpp_lib_variant): Define for C++17.
5749         [__cplusplus >= 201703L] (__cpp_lib_optional): Update value and define
5750         as long integer.
5751         * libsupc++/exception (__cpp_lib_uncaught_exceptions): Define as long
5752         integer.
5753
5754         * doc/xml/manual/status_cxx2020.xml: Update P1123R0 status.
5755
5756 2019-01-12  Jonathan Wakely  <jwakely@redhat.com>
5757
5758         PR libstdc++/88811
5759         PR libstdc++/83306
5760         * src/filesystem/path.cc: Fix typo. If first path is empty, show []
5761         before second path.
5762         * testsuite/experimental/filesystem/filesystem_error/cons.cc: New
5763         test.
5764
5765 2019-01-11  Jonathan Wakely  <jwakely@redhat.com>
5766
5767         * doc/xml/manual/intro.xml: Include new section.
5768         * doc/xml/manual/status_cxx2017.xml: Document more
5769         implementation-defined properties of the library.
5770         * doc/xml/manual/status_cxx2020.xml: Document C++2a status.
5771         * doc/html/*: Regenerate.
5772
5773         * include/bits/refwrap.h [__cplusplus > 201703L]
5774         (_Refwrap_base_arg1, _Refwrap_base_arg2, _Reference_wrapper_base)
5775         (_Reference_wrapper_base_memfun): Do not define for C++2a.
5776         (reference_wrapper): Do not derive from _Reference_wrapper_base_memfun
5777         for C++2a.
5778         (reference_wrapper::operator()): Add static assertion.
5779         * testsuite/20_util/reference_wrapper/incomplete.cc: New test.
5780
5781         * include/std/chrono (duration_values::zero(), duration_values::min())
5782         (duration_values::max()): Add noexcept.
5783         (duration::zero(), duration::min(), duration::max()): Likewise.
5784         (time_point::zero(), time_point::min(), time_point::max()): Likewise.
5785         * testsuite/20_util/duration/requirements/noexcept.cc: New test.
5786         * testsuite/20_util/time_point/requirements/noexcept.cc: New test.
5787
5788         * include/std/version (__cpp_lib_erase_if): Move to C++20 group.
5789
5790 2019-01-11  Jakub Jelinek  <jakub@redhat.com>
5791
5792         * include/std/type_traits (__cpp_lib_is_constant_evaluated): Define.
5793         * include/std/version (__cpp_lib_is_constant_evaluated): Define.
5794
5795 2019-01-11  Jonathan Wakely  <jwakely@redhat.com>
5796
5797         PR libstdc++/88802
5798         * include/bits/functional_hash.h (hash<nullptr_t>): Define
5799         specialization for C++17 (P0513R0, LWG 2817).
5800         * testsuite/20_util/hash/nullptr.cc: New test.
5801
5802         PR libstdc++/88125
5803         * config/abi/pre/gnu.ver (GLIBCXX_3.4.6): Remove unused duplicate
5804         pattern for std::basic_stringbuf::str().
5805
5806         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Correct recent changes to
5807         basic_ostream::operator<< patterns.
5808
5809 2019-01-10  Jonathan Wakely  <jwakely@redhat.com>
5810
5811         * testsuite/27_io/filesystem/operations/last_write_time.cc: Fix
5812         test failures on targets with 32-bit time_t.
5813
5814         * include/bits/erase_if.h: Define __cpp_lib_erase_if.
5815         * include/std/deque: Likewise.
5816         * include/std/forward_list: Likewise.
5817         * include/std/list: Likewise.
5818         * include/std/string: Likewise.
5819         * include/std/vector: Likewise.
5820         * include/std/version: Likewise.
5821         * testsuite/21_strings/basic_string/erasure.cc: Test macro.
5822         * testsuite/23_containers/deque/erasure.cc: Likewise.
5823         * testsuite/23_containers/forward_list/erasure.cc: Likewise.
5824         * testsuite/23_containers/list/erasure.cc: Likewise.
5825         * testsuite/23_containers/map/erasure.cc: Likewise.
5826         * testsuite/23_containers/set/erasure.cc: Likewise.
5827         * testsuite/23_containers/unordered_map/erasure.cc: Likewise.
5828         * testsuite/23_containers/unordered_set/erasure.cc: Likewise.
5829         * testsuite/23_containers/vector/erasure.cc: Likewise.
5830
5831         * include/experimental/internet [AI_NUMERICSERV]
5832         (resolver_base::numeric_service): Define conditionally.
5833         * testsuite/experimental/net/internet/resolver/base.cc: Test it
5834         conditionally.
5835         * testsuite/experimental/net/internet/resolver/ops/lookup.cc:
5836         Likewise.
5837
5838 2019-01-10  Ville Voutilainen  <ville.voutilainen@gmail.com>
5839             Jonathan Wakely  <jwakely@redhat.com>
5840
5841         Implement LWG 2221
5842         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Tighten patterns.
5843         (GLIBCXX_3.4.26): Add new exports.
5844         * include/Makefile.am: Add ostream-inst.cc. Move string-inst.cc to
5845         correct list of sources.
5846         * include/Makefile.in: Regenerate.
5847         * include/std/ostream (operator<<(nullptr_t)): New member function.
5848         * src/c++17/ostream-inst.cc: New file.
5849         * testsuite/27_io/basic_ostream/inserters_other/char/lwg2221.cc: New
5850         test.
5851
5852 2019-01-10  Jonathan Wakely  <jwakely@redhat.com>
5853
5854         * testsuite/util/testsuite_fs.h (nonexistent_path): Include name
5855         of the source file containing the caller.
5856         * testsuite/27_io/filesystem/iterators/directory_iterator.cc: Remove
5857         directories created by test.
5858         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
5859         Likewise.
5860         * testsuite/experimental/filesystem/iterators/directory_iterator.cc:
5861         Likewise.
5862         * testsuite/experimental/filesystem/iterators/
5863         recursive_directory_iterator.cc: Likewise.
5864
5865 2019-01-10  Jakub Jelinek  <jakub@redhat.com>
5866
5867         PR tree-optimization/88775
5868         * include/bits/stl_function.h (greater<_Tp*>::operator(),
5869         less<_Tp*>::operator(), greater_equal<_Tp*>::operator(),
5870         less_equal<_Tp*>::operator()): Use __builtin_is_constant_evaluated
5871         instead of __builtin_constant_p if available.  Don't bother with
5872         the pointer comparison in C++11 and earlier.
5873
5874 2019-01-09  Sandra Loosemore  <sandra@codesourcery.com>
5875
5876         PR other/16615
5877
5878         * include/ext/bitmap_allocator.h: Mechanically replace "can not"
5879         with "cannot".
5880
5881 2019-01-09  Jonathan Wakely  <jwakely@redhat.com>
5882
5883         * testsuite/libstdc++-prettyprinters/cxx17.cc: Fix expected output
5884         for filesystem::path. Give variables more distinctive names.
5885
5886         * include/std/optional (_Optional_payload_base::_M_copy_assign): New
5887         member function to perform non-trivial assignment.
5888         (_Optional_payload_base::_M_move_assign): Likewise.
5889         (_Optional_payload<T, true, false, true>::operator=)
5890         (_Optional_payload<T, true, true, false>::operator=)
5891         (_Optional_payload<T, true, false, false>::operator=): Call
5892         _M_copy_assign and/or _M_move_assign to do non-trivial assignments.
5893
5894         PR libstdc++/88204
5895         * testsuite/26_numerics/complex/operators/more_constexpr.cc: Do not
5896         test std::complex<long double> if long double format is IBM128.
5897         * testsuite/26_numerics/complex/requirements/more_constexpr.cc:
5898         Likewise.
5899
5900 2019-01-08  Jonathan Wakely  <jwakely@redhat.com>
5901
5902         * testsuite/libstdc++-prettyprinters/compat.cc: Test printer support
5903         for old std::unique_ptr layout.
5904         * testsuite/libstdc++-prettyprinters/cxx17.cc: Fix std::variant test
5905         to become valueless. Add filesystem::path tests.
5906
5907         PR libstdc++/87855
5908         * include/std/optional (_Optional_payload_base): New class template
5909         for common code hoisted from _Optional_payload specializations. Use
5910         a template for the union, to allow a partial specialization for
5911         types with non-trivial destructors. Add constructors for in-place
5912         initialization to the union.
5913         (_Optional_payload(bool, const _Optional_payload&)): Use _M_construct
5914         to perform non-trivial copy construction, instead of relying on
5915         non-standard copy elision in a delegating constructor.
5916         (_Optional_payload(bool, _Optional_payload&&)): Likewise for
5917         non-trivial move construction.
5918         (_Optional_payload): Derive from _Optional_payload_base and use it
5919         for everything except the non-trivial assignment operators, which are
5920         defined as needed.
5921         (_Optional_payload<false, C, M>): Derive from the specialization
5922         _Optional_payload<true, false, false> and add a destructor.
5923         (_Optional_base_impl::_M_destruct, _Optional_base_impl::_M_reset):
5924         Forward to corresponding members of _Optional_payload.
5925         (_Optional_base_impl::_M_is_engaged, _Optional_base_impl::_M_get):
5926         Hoist common members from _Optional_base.
5927         (_Optional_base): Make all members and base class public.
5928         (_Optional_base::_M_get, _Optional_base::_M_is_engaged): Move to
5929         _Optional_base_impl.
5930         * python/libstdcxx/v6/printers.py (StdExpOptionalPrinter): Add
5931         support for new std::optional layout.
5932         * testsuite/libstdc++-prettyprinters/compat.cc: New test.
5933
5934         PR libstdc++/88066
5935         * include/bits/locale_conv.h: Use <> for includes not "".
5936         * include/ext/random: Likewise.
5937         * include/ext/vstring.h: Likewise.
5938
5939 2019-01-08  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
5940
5941         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Tighten existing patterns.
5942         (GLIBCXX_3.4.21): Likewise.
5943
5944 2019-01-08  Jonathan Wakely  <jwakely@redhat.com>
5945
5946         PR libstdc++/88749
5947         * src/filesystem/ops.cc (last_write_time): Fix preprocessor condition
5948         to match the one that controls whether utimbuf and utime are declared.
5949
5950 2019-01-07  Jonathan Wakely  <jwakely@redhat.com>
5951
5952         PR libstdc++/87787
5953         * include/bits/char_traits.h (char_traits::move): Do not pass null
5954         pointers to memmove.
5955         * include/bits/locale_facets.h
5956         (ctype<char>::widen(const char*, const char*, char*)): Do not
5957         pass null pointers to memcpy.
5958         (ctype<char>::narrow(const char*, const char*, char, char*)):
5959         Likewise.
5960         (ctype<char>::do_widen(const char*, const char*, char*)):
5961         Likewise.
5962         (ctype<char>::do_narrow(const char*, const char*, char, char*)):
5963         Likewise.
5964
5965         * doc/xml/manual/spine.xml: Update copyright years.
5966         * doc/xml/manual/status_cxx2017.xml: Adjust note about -lstdc++fs.
5967         * doc/xml/manual/using.xml: Remove requirement to link with -lstdc++fs
5968         for C++17 filesystem library.
5969         * doc/html/*: Regenerate.
5970
5971         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for truncate.
5972         * config.h.in: Regenerate.
5973         * config/abi/pre/gnu.ver: Order patterns for filesystem operations
5974         alphabetically and add missing entries for copy_symlink,
5975         hard_link_count, rename, and resize_file.
5976         * configure: Regenerate.
5977         * src/c++17/fs_ops.cc (resize_file): Remove #if so posix::truncate is
5978         used unconditionally.
5979         * src/filesystem/ops-common.h (__gnu_posix::truncate)
5980         [!_GLIBCXX_HAVE_TRUNCATE]: Provide fallback definition that only
5981         supports truncating to zero length.
5982         * testsuite/27_io/filesystem/operations/all.cc: New test.
5983         * testsuite/27_io/filesystem/operations/resize_file.cc: New test.
5984
5985 2019-01-06  Jonathan Wakely  <jwakely@redhat.com>
5986
5987         PR libstdc++/86756
5988         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for utime and
5989         lstat and define _GLIBCXX_USE_UTIME and _GLIBCXX_USE_LSTAT.
5990         * config.h.in: Regenerate.
5991         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export symbols for
5992         remaining std::filesystem types and functions.
5993         * configure: Regenerate.
5994         * src/c++17/Makefile.am: Add C++17 filesystem sources.
5995         * src/c++17/Makefile.in: Regenerate.
5996         * src/c++17/cow-fs_dir.cc: Move src/filesystem/cow-std-dir.cc to
5997         here, and change name of included file.
5998         * src/c++17/cow-fs_ops.cc: Move src/filesystem/cow-std-ops.cc to
5999         here, and change name of included file.
6000         * src/c++17/fs_dir.cc: Move src/filesystem/std-dir.cc to here. Change
6001         path to dir-common.h.
6002         * src/c++17/fs_ops.cc: Move src/filesystem/std-ops.cc to here. Change
6003         path to ops-common.h. Disable -Wunused-parameter warnings.
6004         (internal_file_clock): Define unconditionally.
6005         [!_GLIBCXX_HAVE_SYS_STAT_H] (internal_file_clock::from_stat): Do not
6006         define.
6007         (do_copy_file, do_space): Move definitions to ops.common.h.
6008         (copy, file_size, hard_link_count, last_write_time, space): Only
6009         perform operation when _GLIBCXX_HAVE_SYS_STAT_H is defined, otherwise
6010         report an error.
6011         (last_write_time, read_symlink): Remove unused attributes from
6012         parameters.
6013         * src/filesystem/Makefile.am: Remove C++17 filesystem sources.
6014         * src/filesystem/Makefile.in: Regenerate.
6015         * src/filesystem/cow-std-dir.cc: Move to src/c++17/cow-fs_dir.cc.
6016         * src/filesystem/cow-std-ops.cc: Move to src/c++17/cow-fs_ops.cc.
6017         * src/filesystem/std-dir.cc: Move to src/c++17/fs_dir.cc.
6018         * src/filesystem/std-ops.cc: Move to src/c++17/fs_ops.cc.
6019         * src/filesystem/dir-common.h [!_GLIBCXX_HAVE_DIRENT_H]: Define
6020         dummy types and functions instead of using #error.
6021         * src/filesystem/dir.cc [!_GLIBCXX_HAVE_DIRENT_H]: Use #error.
6022         * src/filesystem/ops-common.h [!_GLIBCXX_USE_LSTAT] (lstat): Define
6023         in terms of stat.
6024         [!_GLIBCXX_HAVE_UNISTD_H]: Define dummy types and functions.
6025         (do_copy_file, do_space): Move definitions here from std-ops.cc.
6026         * src/filesystem/ops.cc: Adjust calls to do_copy_file and do_space
6027         to account for new namespace.
6028         * testsuite/27_io/filesystem/directory_entry/86597.cc: Remove
6029         -lstdc++fs from dg-options.
6030         * testsuite/27_io/filesystem/directory_entry/lwg3171.cc: Likewise.
6031         * testsuite/27_io/filesystem/file_status/1.cc: Likewise.
6032         * testsuite/27_io/filesystem/filesystem_error/cons.cc: Likewise.
6033         * testsuite/27_io/filesystem/filesystem_error/copy.cc: Likewise.
6034         * testsuite/27_io/filesystem/iterators/directory_iterator.cc:
6035         Likewise.
6036         * testsuite/27_io/filesystem/iterators/pop.cc: Likewise.
6037         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
6038         Likewise.
6039         * testsuite/27_io/filesystem/operations/absolute.cc: Likewise.
6040         * testsuite/27_io/filesystem/operations/canonical.cc: Likewise.
6041         * testsuite/27_io/filesystem/operations/copy.cc: Likewise.
6042         * testsuite/27_io/filesystem/operations/copy_file.cc: Likewise.
6043         * testsuite/27_io/filesystem/operations/create_directories.cc:
6044         Likewise.
6045         * testsuite/27_io/filesystem/operations/create_directory.cc: Likewise.
6046         * testsuite/27_io/filesystem/operations/create_symlink.cc: Likewise.
6047         * testsuite/27_io/filesystem/operations/current_path.cc: Likewise.
6048         * testsuite/27_io/filesystem/operations/equivalent.cc: Likewise.
6049         * testsuite/27_io/filesystem/operations/exists.cc: Likewise.
6050         * testsuite/27_io/filesystem/operations/file_size.cc: Likewise.
6051         * testsuite/27_io/filesystem/operations/is_empty.cc: Likewise.
6052         * testsuite/27_io/filesystem/operations/last_write_time.cc: Likewise.
6053         * testsuite/27_io/filesystem/operations/permissions.cc: Likewise.
6054         * testsuite/27_io/filesystem/operations/proximate.cc: Likewise.
6055         * testsuite/27_io/filesystem/operations/read_symlink.cc: Likewise.
6056         * testsuite/27_io/filesystem/operations/relative.cc: Likewise.
6057         * testsuite/27_io/filesystem/operations/remove.cc: Likewise.
6058         * testsuite/27_io/filesystem/operations/remove_all.cc: Likewise.
6059         * testsuite/27_io/filesystem/operations/space.cc: Likewise.
6060         * testsuite/27_io/filesystem/operations/status.cc: Likewise.
6061         * testsuite/27_io/filesystem/operations/symlink_status.cc: Likewise.
6062         * testsuite/27_io/filesystem/operations/temp_directory_path.cc:
6063         Likewise.
6064         * testsuite/27_io/filesystem/operations/weakly_canonical.cc: Likewise.
6065
6066
6067         PR libstdc++/86756
6068         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Make various patterns for
6069         typeinfo and vtables less greedy.
6070         (GLIBCXX_3.4.26): Export symbols for std::filesystem::path.
6071         * src/c++17/Makefile.am: Add fs_path.cc and cow-fs_path.cc.
6072         * src/c++17/Makefile.in: Regenerate.
6073         * src/c++17/cow-fs_path.cc: Move src/filesystem/cow-std-path.cc to
6074         here, and change name of included file.
6075         * src/c++17/fs_path.cc: Move src/filesystem/std-path.cc to here.
6076         * src/filesystem/Makefile.am: Remove std-path.cc and cow-std-path.cc
6077         from sources.
6078         * src/filesystem/Makefile.in: Regenerate.
6079         * src/filesystem/cow-std-path.cc: Move to src/c++17/cow-fs_path.cc.
6080         * src/filesystem/std-path.cc: Move to src/c++17/fs_path.cc.
6081         * testsuite/27_io/filesystem/path/append/path.cc: Remove -lstdc++fs
6082         from dg-options and remove dg-require-filesystem-ts.
6083         * testsuite/27_io/filesystem/path/append/source.cc: Likewise.
6084         * testsuite/27_io/filesystem/path/assign/assign.cc: Likewise.
6085         * testsuite/27_io/filesystem/path/assign/copy.cc: Likewise.
6086         * testsuite/27_io/filesystem/path/compare/compare.cc: Likewise.
6087         * testsuite/27_io/filesystem/path/compare/lwg2936.cc: Likewise.
6088         * testsuite/27_io/filesystem/path/compare/path.cc: Likewise.
6089         * testsuite/27_io/filesystem/path/compare/strings.cc: Likewise.
6090         * testsuite/27_io/filesystem/path/concat/path.cc: Likewise.
6091         * testsuite/27_io/filesystem/path/concat/strings.cc: Likewise.
6092         * testsuite/27_io/filesystem/path/construct/80762.cc: Likewise.
6093         * testsuite/27_io/filesystem/path/construct/copy.cc: Likewise.
6094         * testsuite/27_io/filesystem/path/construct/default.cc: Likewise.
6095         * testsuite/27_io/filesystem/path/construct/format.cc: Likewise.
6096         * testsuite/27_io/filesystem/path/construct/locale.cc: Likewise.
6097         * testsuite/27_io/filesystem/path/construct/range.cc: Likewise.
6098         * testsuite/27_io/filesystem/path/construct/string_view.cc: Likewise.
6099         * testsuite/27_io/filesystem/path/decompose/extension.cc: Likewise.
6100         * testsuite/27_io/filesystem/path/decompose/filename.cc: Likewise.
6101         * testsuite/27_io/filesystem/path/decompose/parent_path.cc: Likewise.
6102         * testsuite/27_io/filesystem/path/decompose/relative_path.cc: Likewise.
6103         * testsuite/27_io/filesystem/path/decompose/root_directory.cc:
6104         Likewise.
6105         * testsuite/27_io/filesystem/path/decompose/root_name.cc: Likewise.
6106         * testsuite/27_io/filesystem/path/decompose/root_path.cc: Likewise.
6107         * testsuite/27_io/filesystem/path/decompose/stem.cc: Likewise.
6108         * testsuite/27_io/filesystem/path/generation/normal.cc: Likewise.
6109         * testsuite/27_io/filesystem/path/generation/normal2.cc: Likewise.
6110         * testsuite/27_io/filesystem/path/generation/proximate.cc: Likewise.
6111         * testsuite/27_io/filesystem/path/generation/relative.cc: Likewise.
6112         * testsuite/27_io/filesystem/path/generic/generic_string.cc: Likewise.
6113         * testsuite/27_io/filesystem/path/itr/components.cc: Likewise.
6114         * testsuite/27_io/filesystem/path/itr/traversal.cc: Likewise.
6115         * testsuite/27_io/filesystem/path/modifiers/clear.cc: Likewise.
6116         * testsuite/27_io/filesystem/path/modifiers/make_preferred.cc:
6117         Likewise.
6118         * testsuite/27_io/filesystem/path/modifiers/remove_filename.cc:
6119         Likewise.
6120         * testsuite/27_io/filesystem/path/modifiers/replace_extension.cc:
6121         Likewise.
6122         * testsuite/27_io/filesystem/path/modifiers/replace_filename.cc:
6123         Likewise.
6124         * testsuite/27_io/filesystem/path/modifiers/swap.cc: Likewise.
6125         * testsuite/27_io/filesystem/path/native/string.cc: Likewise.
6126         * testsuite/27_io/filesystem/path/nonmember/append.cc: Likewise.
6127         * testsuite/27_io/filesystem/path/nonmember/hash_value.cc: Likewise.
6128         * testsuite/27_io/filesystem/path/query/empty.cc: Likewise.
6129         * testsuite/27_io/filesystem/path/query/has_extension.cc: Likewise.
6130         * testsuite/27_io/filesystem/path/query/has_filename.cc: Likewise.
6131         * testsuite/27_io/filesystem/path/query/has_parent_path.cc: Likewise.
6132         * testsuite/27_io/filesystem/path/query/has_relative_path.cc: Likewise.
6133         * testsuite/27_io/filesystem/path/query/has_root_directory.cc:
6134         Likewise.
6135         * testsuite/27_io/filesystem/path/query/has_root_name.cc: Likewise.
6136         * testsuite/27_io/filesystem/path/query/has_root_path.cc: Likewise.
6137         * testsuite/27_io/filesystem/path/query/has_stem.cc: Likewise.
6138         * testsuite/27_io/filesystem/path/query/is_absolute.cc: Likewise.
6139         * testsuite/27_io/filesystem/path/query/is_relative.cc: Likewise.
6140
6141         PR libstdc++/87431
6142         * include/std/variant (_Variant_storage<true, _Types...>::_M_valid):
6143         Check is_trivially_copyable instead of is_scalar.
6144         (variant::emplace<N, Args>(Args&&...)): If construction of the new
6145         contained value can throw and its type is trivially copyable then
6146         construct into a temporary variant and move from it, to provide the
6147         strong exception safety guarantee.
6148         (variant::emplace<N, U, Args>(initializer_list<U>, Args&&...)):
6149         Likewise.
6150         * testsuite/20_util/variant/87431.cc: New test.
6151         * testsuite/20_util/variant/run.cc: Adjust test so that throwing
6152         conversion causes valueless state.
6153
6154         PR libstdc++/88607
6155         * testsuite/17_intro/headers/c++1998/charset.cc: New test.
6156         * testsuite/17_intro/headers/c++2011/charset.cc: New test.
6157         * testsuite/17_intro/headers/c++2014/charset.cc: New test.
6158         * testsuite/17_intro/headers/c++2017/charset.cc: New test.
6159         * testsuite/17_intro/headers/c++2020/charset.cc: New test.
6160
6161 2019-01-05  Jonathan Wakely  <jwakely@redhat.com>
6162
6163         * include/bits/fs_fwd.h (__file_clock): Define new clock.
6164         (file_time_type): Redefine in terms of __file_clock.
6165         * src/filesystem/ops-common.h (file_time): Add FIXME comment about
6166         overflow.
6167         * src/filesystem/std-ops.cc (is_set(perm_options, perm_options)): Give
6168         internal linkage.
6169         (internal_file_lock): New helper type for accessing __file_clock.
6170         (do_copy_file): Use internal_file_lock to convert system time to
6171         file_time_type.
6172         (last_write_time(const path&, error_code&)): Likewise.
6173         (last_write_time(const path&, file_time_type, error_code&)): Likewise.
6174
6175 2019-01-04  Jonathan Wakely  <jwakely@redhat.com>
6176
6177         * config/abi/pre/gnu.ver (GLIBCXX_3.4.21): Make patterns less greedy
6178         for const member functions of std::basic_string.
6179         (GLIBCXX_3.4.26): Export member functions of std::basic_string added
6180         in C++17.
6181         * include/bits/basic_string.h (basic_string(__sv_wrapper, const A&)):
6182         Make non-standard constructor private.
6183         [!_GLIBCXX_USE_CXX11_ABI] (basic_string(__sv_wrapper, const A&)):
6184         Likewise.
6185         * include/bits/basic_string.tcc (std::string, std::wstring): Declare
6186         explicit instantiations for C++17 as well as earlier dialects.
6187         * src/c++17/Makefile.am: Add new source files.
6188         * src/c++17/Makefile.in: Regenerate.
6189         * src/c++17/cow-string-inst.cc: New file defining explicit
6190         instantiations for basic_string member functions added in C++17.
6191         * src/c++17/string-inst.cc: Likewise.
6192
6193         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export allocator-extended
6194         copy/move constructors for old std::basic_string.
6195         * include/bits/basic_string.h [!_GLIBCXX_USE_CXX11_ABI]
6196         (basic_string::reference, basic_string::const_reference): Define
6197         as plain references for C++11 and later.
6198         (basic_string::basic_string()): Put constructor body outside
6199         preprocessor conditional groups.
6200         (basic_string::basic_string(basic_string&&)): Move _Alloc_hider
6201         instead of copying it.
6202         (basic_string::basic_string(const basic_string&, const _Alloc&)):
6203         Define.
6204         (basic_string::basic_string(basic_string&&, const _Alloc&)):
6205         Define.
6206         * include/bits/fs_path.h [!_GLIBCXX_USE_CXX11_ABI]: Remove special
6207         cases for old basic_string.
6208         * testsuite/21_strings/basic_string/cons/char/8.cc: Test
6209         allocator-extended constructors unconditionally. Add extra members to
6210         allocator type when using old string ABI.
6211         * testsuite/21_strings/basic_string/allocator/71964.cc: Enable test
6212         for old string ABI.
6213         * testsuite/21_strings/basic_string/cons/wchar_t/8.cc: Likewise.
6214
6215         * testsuite/23_containers/list/61347.cc: Avoid spurious failure when
6216         -fno-inline added to test flags.
6217
6218         * testsuite/21_strings/basic_string/requirements/
6219         explicit_instantiation/debug.cc: Remove XFAIL for old ABI.
6220
6221         * testsuite/27_io/filesystem/filesystem_error/copy.cc: Fix static
6222         assertion failures with old std::string ABI.
6223
6224         * include/bits/fs_path.h (path::_List::erase): Replace both overloads
6225         with ...
6226         (path::pop_back(), path::_M_erase_from(const_iterator)): New member
6227         functions that will only erase elements at the end.
6228         * src/filesystem/std-path.cc (path::_List::_Impl::pop_back()): Define.
6229         (path::_List::_Impl::_M_erase_from(const_iterator)): Define.
6230         (path::_List::operator=(const _List&)): Use _M_erase_from(p) instead
6231         of erase(p, end()).
6232         (path::_List::pop_back()): Define.
6233         (path::_List::_M_erase_from(const_iterator)): Define.
6234         (path::operator/=(const path&)): Use pop_back to remove last component
6235         and _M_erase_from to remove multiple components.
6236         (path::_M_append(basic_string_view<value_type>)): Likewise.
6237         (path::operator+=(const path&)): Likewise.
6238         (path::_M_concat(basic_string_view<value_type>)): Likewise.
6239         (path::remove_filename()): Likewise.
6240         (path::lexically_normal()): Use _List::_Impl iterators instead of
6241         path::iterator. Use pop_back to remove components from the end. Clear
6242         trailing filename, instead of using erase(const_iterator) to remove
6243         a non-final component.
6244         * testsuite/27_io/filesystem/path/generation/normal.cc: Test
6245         additional cases.
6246         * testsuite/27_io/filesystem/path/generation/normal2.cc: New test.
6247
6248         * src/filesystem/std-path.cc (path::operator+=(const path&)): Fix
6249         incorrect treatment of empty filename after trailing slash.
6250         * testsuite/27_io/filesystem/path/concat/path.cc: Test problem case.
6251
6252         * testsuite/21_strings/basic_string/modifiers/assign/char/
6253         move_assign_optim.cc: Avoid spurious failure when -fno-inline added
6254         to test flags.
6255         * testsuite/21_strings/basic_string/modifiers/assign/wchar_t/
6256         move_assign_optim.cc: Likewise.
6257
6258 2019-01-03  Jonathan Wakely  <jwakely@redhat.com>
6259             Jakub Jelinek  <jakub@redhat.com>
6260
6261         PR libstdc++/88607
6262         * include/experimental/memory: Replace UTF-8 quote characters.
6263         * include/std/future: Replace UTF-8 "em dash" characters.
6264
6265 2019-01-03  Jonathan Wakely  <jwakely@redhat.com>
6266
6267         PR libstdc++/88607
6268         * include/bits/forward_list.h: Replace UTF-8 "ligature fi" character.
6269         * include/debug/forward_list: Likewise.
6270         * include/experimental/bits/shared_ptr.h: Remove UTF-8 "section sign"
6271         character.
6272         * include/experimental/chrono: Likewise.
6273         * include/experimental/functional: Likewise.
6274         * include/experimental/ratio: Likewise.
6275         * include/experimental/system_error: Likewise.
6276         * include/experimental/tuple: Likewise.
6277         * include/experimental/type_traits: Likewise.
6278         * include/parallel/workstealing.h: Replace UTF-8 "en dash" character.
6279         * include/parallel/multiseq_selection.h: Likewise.
6280
6281         PR libstdc++/88681
6282         * config/abi/pre/gnu.ver: Add missing exports.
6283         * testsuite/22_locale/collate_byname/88681.cc: New test.
6284         * testsuite/22_locale/time_get/get/char/88681.cc: New test.
6285         * testsuite/22_locale/time_get/get/wchar_t/88681.cc: New test.
6286
6287 2019-01-02  Jonathan Wakely  <jwakely@redhat.com>
6288
6289         * testsuite/23_containers/map/cons/deduction.cc: Test deduction from
6290         initializer_list<value_type> and from input iterator ranges.
6291         * testsuite/23_containers/multimap/cons/deduction.cc: Likewise.
6292
6293         * testsuite/experimental/string_view/element_access/char/empty.cc:
6294         Fix year range in copyright header.
6295
6296 2019-01-02  Joel Brobecker  <brobecker@adacore.com>
6297
6298         * testsuite/21_strings/basic_string_view/element_access/char/empty.cc:
6299         Fix year range in copyright header.
6300
6301 2019-01-01  Jakub Jelinek  <jakub@redhat.com>
6302
6303         Update copyright years.
6304 \f
6305 Copyright (C) 2019 Free Software Foundation, Inc.
6306
6307 Copying and distribution of this file, with or without modification,
6308 are permitted in any medium without royalty provided the copyright
6309 notice and this notice are preserved.