libstdc++-v3/ChangeLog

   1 2019-10-31  Jonathan Wakely  <jwakely@redhat.com>
   2
   3         * testsuite/24_iterators/range_access*.cc: Move to ...
   4         * testsuite/24_iterators/range_access/range_access*.cc: ... here.
   5         * testsuite/24_iterators/range_access/range_access_cpp20_neg.cc: New
   6         test.
   7
   8 2019-10-30  Jonathan Wakely  <jwakely@redhat.com>
   9
  10         * include/std/concepts (std::ranges::swap): Use a single overload for
  11         the non-array cases, and switch using if-constexpr.
  12
  13         * include/bits/stl_iterator.h (__normal_iterator::iterator_concept):
  14         Guard with __cpp_lib_concepts macro.
  15
  16         * include/std/bit (__cpp_lib_bitops): Define.
  17         * include/std/version (__cpp_lib_constexpr): Remove.
  18         (__cpp_lib_bitops, __cpp_lib_constexpr_dynamic_alloc): Define.
  19         * testsuite/26_numerics/bit/header.cc: New test.
  20         * testsuite/26_numerics/bit/header-2.cc: New test.
  21         * testsuite/20_util/allocator_traits/header.cc: New test.
  22         * testsuite/20_util/allocator_traits/header-2.cc: New test.
  23
  24         * include/bits/stl_iterator.h (namespace __gnu_cxx): Remove
  25         using-declarations for std::iterator and std::iterator_traits.
  26         (__gnu_cxx::__normal_iterator): Qualify iterator_traits.
  27         * include/ext/algorithm (namespace __gnu_cxx): Remove
  28         using-declarations for std names and qualify those names when used.
  29         Also refer to std::min in parentheses to protect against function-like
  30         macros.
  31         * include/ext/rc_string_base.h: Qualify iterator_traits.
  32         * include/ext/sso_string_base.h: Qualify iterator_traits.
  33
  34         PR libstdc++/92272
  35         * include/bits/stl_bvector.h (_Bit_iterator::pointer)
  36         (_Bit_const_iterator::pointer): Define as void for C++20.
  37         * include/bits/stl_iterator.h (reverse_iterator::operator->()): Add
  38         constraints for C++20.
  39         (__normal_iterator::iterator_concept): Define for C++20.
  40         * include/bits/streambuf_iterator.h (istreambuf_iterator::pointer):
  41         Define as void for C++20.
  42         (ostreambuf_iterator::difference_type): Define as ptrdiff_t for C++20.
  43         (ostreambuf_iterator::ostreambuf_iterator()): Add default constructor
  44         for C++20.
  45         * testsuite/23_containers/vector/bool/iterator_c++20.cc: New test.
  46         * testsuite/24_iterators/bidirectional/concept.cc: New test.
  47         * testsuite/24_iterators/bidirectional/tag.cc: New test.
  48         * testsuite/24_iterators/contiguous/concept.cc: New test.
  49         * testsuite/24_iterators/contiguous/tag.cc: New test.
  50         * testsuite/24_iterators/forward/concept.cc: New test.
  51         * testsuite/24_iterators/forward/tag.cc: New test.
  52         * testsuite/24_iterators/input/concept.cc: New test.
  53         * testsuite/24_iterators/input/tag.cc: New test.
  54         * testsuite/24_iterators/istreambuf_iterator/requirements/typedefs.cc:
  55         New test.
  56         * testsuite/24_iterators/ostreambuf_iterator/requirements/typedefs.cc:
  57         New test.
  58         * testsuite/24_iterators/output/concept.cc: New test.
  59         * testsuite/24_iterators/output/tag.cc: New test.
  60         * testsuite/24_iterators/random_access/concept.cc: New test.
  61         * testsuite/24_iterators/random_access/tag.cc: New test.
  62         * testsuite/24_iterators/range_operations/advance_debug_neg.cc: New
  63         test.
  64         * testsuite/24_iterators/random_access_iterator/26020.cc: Move to ...
  65         * testsuite/24_iterators/operations/26020.cc: ... here.
  66         * testsuite/24_iterators/random_access_iterator/
  67         string_vector_iterators.cc: Move to ...
  68         * testsuite/24_iterators/random_access/string_vector_iterators.cc: ...
  69         here.
  70
  71         * testsuite/util/testsuite_iterators.h: Fix typo in __cplusplus check.
  72
  73 2019-10-29  Jonathan Wakely  <jwakely@redhat.com>
  74
  75         * include/bits/range_access.h (ranges::disable_sized_range)
  76         (ranges::begin, ranges::end, ranges::cbegin, ranges::cend)
  77         (ranges::rbegin, ranges::rend, ranges::crbegin, ranges::crend)
  78         (ranges::size, ranges::empty, ranges::data, ranges::cdata)
  79         (ranges::range, ranges::sized_range, ranges::advance, ranges::distance)
  80         (ranges::next, ranges::prev): Guard with __cpp_lib_concepts.
  81         * include/bits/stl_iterator.h (disable_sized_sentinel): Likewise.
  82
  83         * include/bits/alloc_traits.h (__cpp_lib_constexpr_dynamic_alloc):
  84         Define.
  85         (allocator_traits::_S_construct, allocator_traits::_S_destroy)
  86         (__alloc_on_copy, __alloc_on_move, __alloc_on_swap): Use
  87         _GLIBCXX14_CONSTEXPR instead of constexpr.
  88         * include/bits/stl_construct.h (_Destroy): Likewise.
  89
  90         * include/Makefile.am: Add new header.
  91         * include/Makefile.in: Regenerate.
  92         * include/bits/iterator_concepts.h: New header.
  93         (contiguous_iterator_tag, iter_reference_t, ranges::iter_move)
  94         (iter_rvalue_reference_t, incrementable_traits, iter_difference_t)
  95         (readable_traits, iter_value_t, readable, iter_common_reference_t)
  96         (writable, waekly_incrementable, incrementable)
  97         (input_or_output_iterator, sentinel_for, disable_sized_sentinel)
  98         (sized_sentinel_for, input_iterator, output_iterator)
  99         (forward_iterator, bidirectional_iterator, random_access_iterator)
 100         (contiguous_iterator, indirectly_unary_invocable)
 101         (indirectly_regular_unary_invocable, indirect_unary_predicate)
 102         (indirect_relation, indirect_strict_weak_order, indirect_result_t)
 103         (projected, indirectly_movable, indirectly_movable_storable)
 104         (indirectly_copyable, indirectly_copyable_storable, ranges::iter_swap)
 105         (indirectly_swappable, indirectly_comparable, permutable, mergeable)
 106         (sortable, unreachable_sentinel_t, unreachable_sentinel)
 107         (default_sentinel_t, default_sentinel): Define.
 108         (__detail::__cpp17_iterator, __detail::__cpp17_input_iterator)
 109         (__detail::__cpp17_fwd_iterator, __detail::__cpp17_bidi_iterator)
 110         (__detail::__cpp17_randacc_iterator): Define.
 111         (__iterator_traits): Define constrained specializations.
 112         * include/bits/move.h (move): Only use old concept check for C++98.
 113         * include/bits/range_access.h (ranges::disable_sized_range)
 114         (ranges::begin, ranges::end, ranges::cbegin, ranges::cend)
 115         (ranges::rbegin, ranges::rend, ranges::crbegin, ranges::crend)
 116         (ranges::size, ranges::empty, ranges::data, ranges::cdata): Define
 117         new customization points for C++20.
 118         (ranges::range, ranges::sized_range): Define new concepts for C++20.
 119         (ranges::advance, ranges::distance, ranges::next, ranges::prev):
 120         Define new functions for C++20.
 121         (__adl_end, __adl_cdata, __adl_cbegin, __adl_cend, __adl_rbegin)
 122         (__adl_rend, __adl_crbegin, __adl_crend, __adl_cdata, __adl_size)
 123         (__adl_empty): Remove.
 124         * include/bits/stl_iterator.h (disable_sized_sentinel): Specialize
 125         for reverse_iterator.
 126         * include/bits/stl_iterator_base_types.h (contiguous_iterator_tag):
 127         Define new struct for C++20.
 128         (iterator_traits<_Tp*>): Constrain partial specialization in C++20.
 129         * include/std/concepts (__is_class_or_enum): Move to __detail
 130         namespace.
 131         * testsuite/20_util/forward/c_neg.cc: Adjust dg-error line number.
 132         * testsuite/20_util/forward/f_neg.cc: Likewise.
 133         * testsuite/24_iterators/associated_types/incrementable.traits.cc: New
 134         test.
 135         * testsuite/24_iterators/associated_types/readable.traits.cc: New test.
 136         * testsuite/24_iterators/contiguous/concept.cc: New test.
 137         * testsuite/24_iterators/contiguous/tag.cc: New test.
 138         * testsuite/24_iterators/customization_points/iter_move.cc: New test.
 139         * testsuite/24_iterators/customization_points/iter_swap.cc: New test.
 140         * testsuite/24_iterators/headers/iterator/synopsis_c++20.cc: New test.
 141         * testsuite/24_iterators/range_operations/advance.cc: New test.
 142         * testsuite/24_iterators/range_operations/distance.cc: New test.
 143         * testsuite/24_iterators/range_operations/next.cc: New test.
 144         * testsuite/24_iterators/range_operations/prev.cc: New test.
 145         * testsuite/26_numerics/adjacent_difference/requirements/
 146         explicit_instantiation/2.cc: Rename types that conflict with C++20
 147         concepts.
 148         * testsuite/26_numerics/adjacent_difference/requirements/
 149         explicit_instantiation/pod.cc: Likewise.
 150         * testsuite/26_numerics/partial_sum/requirements/
 151         explicit_instantiation/2.cc: Likewise.
 152         * testsuite/26_numerics/partial_sum/requirements/
 153         explicit_instantiation/pod.cc: Likewise.
 154         * testsuite/experimental/iterator/requirements.cc: Likewise.
 155         * testsuite/std/ranges/access/begin.cc: New test.
 156         * testsuite/std/ranges/access/cbegin.cc: New test.
 157         * testsuite/std/ranges/access/cdata.cc: New test.
 158         * testsuite/std/ranges/access/cend.cc: New test.
 159         * testsuite/std/ranges/access/crbegin.cc: New test.
 160         * testsuite/std/ranges/access/crend.cc: New test.
 161         * testsuite/std/ranges/access/data.cc: New test.
 162         * testsuite/std/ranges/access/empty.cc: New test.
 163         * testsuite/std/ranges/access/end.cc: New test.
 164         * testsuite/std/ranges/access/rbegin.cc: New test.
 165         * testsuite/std/ranges/access/rend.cc: New test.
 166         * testsuite/std/ranges/access/size.cc: New test.
 167         * testsuite/util/testsuite_iterators.h (contiguous_iterator_wrapper)
 168         (test_range, test_sized_range): New test utilities.
 169
 170         * testsuite/util/testsuite_iterators.h (BoundsContainer::size()): Add
 171         new member function.
 172         (WritableObject::operator=): Constrain with enable_if when available.
 173         (remove_cv): Use std::remove_if when available.
 174         (test_container::it(int)): Use size().
 175         (test_container::size()): Use BoundsContainer::size().
 176
 177         PR libstdc++/92267
 178         * include/bits/stl_deque.h (_Deque_iterator(const _Deque_iterator&)):
 179         Do not define as defaulted.
 180         * testsuite/23_containers/deque/types/92267.cc: New test.
 181
 182 2019-10-26  Gerald Pfeifer  <gerald@pfeifer.com>
 183
 184         * doc/xml/manual/codecvt.xml: Switch pubs.opengroup.org to https.
 185         * doc/xml/manual/locale.xml (LC_ALL): Ditto.
 186         * doc/xml/manual/messages.xml: Ditto.
 187
 188 2019-10-26  John David Anglin  <danglin@gcc.gnu.org>
 189
 190         * config/abi/post/hppa-linux-gnu/baseline_symbols.txt: Update.
 191
 192 2019-10-25  Jonathan Wakely  <jwakely@redhat.com>
 193
 194         * testsuite/util/testsuite_iterators.h (output_iterator_wrapper)
 195         (input_iterator_wrapper, forward_iterator_wrapper)
 196         bidirectional_iterator_wrapper, random_access_iterator_wrapper): Remove
 197         user-provided copy constructors and copy assignment operators so they
 198         are defined implicitly.
 199         (input_iterator_wrapper): Initialize members in default constructor.
 200         (forward_iterator_wrapper): Remove assignments to members of base.
 201
 202         * include/bits/allocator.h: Check __cpp_constexpr_dynamic_alloc
 203         before making the std::allocator destructor constexpr.
 204         * testsuite/20_util/allocator/requirements/constexpr.cc: New test.
 205
 206         * include/bits/range_cmp.h: Check __cpp_lib_concepts before defining
 207         concepts. Fix comment.
 208         * include/bits/allocator.h
 209
 210 2019-10-25  Gerald Pfeifer  <gerald@pfeifer.com>
 211
 212         * doc/xml/manual/policy_data_structures_biblio.xml: Switch
 213         pubs.opengroup.org to https.
 214
 215 2019-10-25  Gerald Pfeifer  <gerald@pfeifer.com>
 216
 217         * doc/xml/gnu/gpl-3.0.xml: Switch www.gnu.org to https.
 218
 219 2019-09-09  Edward Smith-Rowland  <3dw4rd@verizon.net>
 220
 221         * doc/xml/manual/status_cxx2020.xml: Add rows and update status.
 222
 223 2019-10-24  Jonathan Wakely  <jwakely@redhat.com>
 224
 225         * include/bits/allocator.h (allocator<void>): Restore the explicit
 226         specialization for C++20, but make its API consistent with the primary
 227         template.
 228         (allocator::~allocator()): Restore the destructor for C++20, but make
 229         it constexpr.
 230         * testsuite/20_util/allocator/rebind_c++20.cc: Check allocator<void>.
 231         * testsuite/20_util/allocator/requirements/typedefs_c++20.cc: Likewise.
 232         * testsuite/20_util/allocator/void.cc: Check that constructors and
 233         destructors are trivial. Check for converting constructor in C++20.
 234         * testsuite/ext/malloc_allocator/variadic_construct.cc: Simplify
 235         dejagnu target selector.
 236         * testsuite/ext/new_allocator/variadic_construct.cc: Likewise.
 237
 238         * include/experimental/executor (__use_future_ct, use_future_t):
 239         Define partial specializations for std::allocator.
 240         (__use_future_ch): Overload constructor for completion tokens using
 241         std::allocator.
 242
 243         PR libstdc++/88338 Implement P0898R3, C++20 concepts library
 244         * doc/xml/manual/status_cxx2020.xml: Update status.
 245         * doc/html/*: Regenerate.
 246         * testsuite/std/concepts/1.cc: New test.
 247         * testsuite/std/concepts/2.cc: New test.
 248
 249         * include/bits/random.h (uniform_random_bit_generator): Define for
 250         C++20.
 251         * testsuite/26_numerics/random/concept.cc: New test.
 252         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error line.
 253
 254 2019-10-23  Jonathan Wakely  <jwakely@redhat.com>
 255
 256         * include/std/functional (invoke): Add constexpr for C++20.
 257         * include/std/version (__cpp_lib_constexpr_invoke): Define.
 258         * testsuite/20_util/function_objects/invoke/constexpr.cc: New test.
 259
 260         PR c++/91369 Implement P0784R7 changes to allocation and construction
 261         * include/bits/alloc_traits.h: Include <bits/stl_construct.h>.
 262         (allocator_traits::_S_allocate, allocator_traits::_S_construct)
 263         (allocator_traits::_S_destroy, allocator_traits::_S_max_size)
 264         (allocator_traits::_S_select, allocator_traits::allocate)
 265         (allocator_traits::deallocate, allocator_traits::construct)
 266         (allocator_traits::destroy, allocator_traits::max_size)
 267         (allocator_traits::select_on_container_copy_construction)
 268         (allocator_traits<allocator<T>>): Add constexpr specifier for C++20.
 269         (allocator_traits<allocator<T>>::construct): Use construct_at.
 270         (allocator_traits<allocator<T>>::destroy): Use destroy_at.
 271         (__alloc_on_copy, __alloc_on_move, __alloc_on_swap): Add constexpr
 272         specifier.
 273         (_Destroy(ForwardIterator, ForwardIterator, Alloc&))
 274         (_Destroy(ForwardIterator, ForwardIterator, allocator<T>&)): Move here
 275         from <bits/stl_construct.h>.
 276         * include/bits/allocator.h (allocator::~allocator): Remove for C++20.
 277         (allocator::allocate, allocate::deallocate): Define for C++20 and up.
 278         (operator==, operator!=): Add constexpr specifier for C++20.
 279         * include/bits/stl_construct.h: Don't include <ext/alloc_traits.h>.
 280         (destroy_at): For C++20 add constexpr specifier and support for
 281         destroying arrays.
 282         (construct_at): Define new function for C++20.
 283         (_Construct): Return result of placement new-expression. For C++11 and
 284         up add constexpr. For C++20 dispatch to std::construct_at during
 285         constant evaluation.
 286         (_Destroy(pointer)): Add constexpr specifier. For C++20 dispatch to
 287         std::destroy_at during constant evaluation.
 288         (_Destroy_aux::__destroy, _Destroy_n_aux::__destroy_n): Add constexpr
 289         specifier for C++20.
 290         (_Destroy(ForwardIterator, ForwardIterator))
 291         (_Destroy(ForwardIterator, Size)): Likewise. Do not elide trivial
 292         destructors during constant evaluation.
 293         (destroy, destroy_n): Add constexpr specifier for C++20.
 294         (_Destroy(ForwardIterator, ForwardIterator, Alloc&))
 295         (_Destroy(ForwardIterator, ForwardIterator, allocator<T>&)): Move to
 296         <bits/alloc_traits.h>, to remove dependency on allocators.
 297         * include/bits/stl_uninitialized.h: Include <ext/alloc_traits.h>.
 298         Include <bits/stl_pair.h> instead of <utility>.
 299         * include/ext/alloc_traits.h: Always include <bits/alloc_traits.h>.
 300         (__alloc_traits::construct, __alloc_traits::destroy)
 301         (__alloc_traits::_S_select_on_copy, __alloc_traits::_S_on_swap): Add
 302         constexpr specifier.
 303         * include/ext/malloc_allocator.h  (operator==, operator!=): Add
 304         constexpr specifier for C++20.
 305         * include/ext/new_allocator.h (operator==, operator!=): Likewise.
 306         * testsuite/20_util/headers/memory/synopsis.cc: Add constexpr.
 307         * testsuite/20_util/scoped_allocator/69293_neg.cc: Ignore additional
 308         errors due to constexpr function called after failed static_assert.
 309         * testsuite/20_util/specialized_algorithms/construct_at/1.cc: New test.
 310         * testsuite/23_containers/vector/cons/destructible_debug_neg.cc:
 311         Ignore additional errors due to constexpr function called after failed
 312         static_assert.
 313         * testsuite/23_containers/vector/cons/destructible_neg.cc: Likewise.
 314
 315         * testsuite/20_util/bind/91371.cc: Fix test to compile as C++11.
 316
 317         * include/debug/helper_functions.h (__valid_range): Change
 318         _GLIBCXX_CONSTEXPR to _GLIBCXX14_CONSTEXPR.
 319
 320         * include/ext/throw_allocator.h (throw_allocator_base): Qualify
 321         size_t and ptrdiff_t.
 322
 323         * include/ext/pb_ds/detail/bin_search_tree_/bin_search_tree_.hpp:
 324         Use detail::rebind_traits.
 325         * include/ext/pb_ds/detail/bin_search_tree_/node_iterators.hpp:
 326         Likewise.
 327         * include/ext/pb_ds/detail/bin_search_tree_/traits.hpp: Likewise.
 328         * include/ext/pb_ds/detail/binary_heap_/binary_heap_.hpp: Likewise.
 329         * include/ext/pb_ds/detail/binary_heap_/entry_cmp.hpp: Likewise.
 330         * include/ext/pb_ds/detail/binary_heap_/entry_pred.hpp: Likewise.
 331         * include/ext/pb_ds/detail/binary_heap_/point_const_iterator.hpp:
 332         Likewise.
 333         * include/ext/pb_ds/detail/binomial_heap_base_/binomial_heap_base_.hpp:
 334         Likewise.
 335         * include/ext/pb_ds/detail/branch_policy/branch_policy.hpp: Likewise.
 336         * include/ext/pb_ds/detail/cc_hash_table_map_/cc_ht_map_.hpp: Likewise.
 337         * include/ext/pb_ds/detail/cond_dealtor.hpp: Likewise.
 338         * include/ext/pb_ds/detail/eq_fn/hash_eq_fn.hpp (has_eq_fn): Likewise.
 339         * include/ext/pb_ds/detail/gp_hash_table_map_/gp_ht_map_.hpp: Likewise.
 340         * include/ext/pb_ds/detail/hash_fn/ranged_hash_fn.hpp: Likewise.
 341         * include/ext/pb_ds/detail/hash_fn/ranged_probe_fn.hpp: Likewise.
 342         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/
 343         left_child_next_sibling_heap_.hpp: Likewise.
 344         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/node.hpp:
 345         Likewise.
 346         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/
 347         point_const_iterator.hpp: Likewise.
 348         * include/ext/pb_ds/detail/list_update_map_/lu_map_.hpp: Likewise.
 349         * include/ext/pb_ds/detail/ov_tree_map_/
 350         constructors_destructor_fn_imps.hpp: Likewise.
 351         * include/ext/pb_ds/detail/ov_tree_map_/node_iterators.hpp: Likewise.
 352         * include/ext/pb_ds/detail/ov_tree_map_/ov_tree_map_.hpp: Likewise.
 353         * include/ext/pb_ds/detail/pairing_heap_/pairing_heap_.hpp: Likewise.
 354         * include/ext/pb_ds/detail/pat_trie_/pat_trie_.hpp: Likewise.
 355         * include/ext/pb_ds/detail/pat_trie_/pat_trie_base.hpp: Likewise.
 356         * include/ext/pb_ds/detail/rb_tree_map_/node.hpp: Likewise.
 357         * include/ext/pb_ds/detail/rc_binomial_heap_/rc.hpp: Likewise.
 358         * include/ext/pb_ds/detail/splay_tree_/node.hpp: Likewise.
 359         * include/ext/pb_ds/detail/thin_heap_/thin_heap_.hpp: Likewise.
 360         * include/ext/pb_ds/detail/trie_policy/sample_trie_access_traits.hpp:
 361         Likewise.
 362         * include/ext/pb_ds/detail/type_utils.hpp: Fix typo in comment.
 363         * include/ext/pb_ds/detail/types_traits.hpp (stored_value): Add
 364         bool parameter to control whether the hash value is stored.
 365         (select_base_type): New class template and partial specialization.
 366         (maybe_null_type): Likewise.
 367         (rebind_traits): New class template.
 368         (type_base): Remove four nearly identical specializations.
 369         (type_dispatch): Remove.
 370         (type_traits): Use select_base_type and maybe_null_type instead of
 371         type_base to control differences between specializations.
 372         * include/ext/pb_ds/list_update_policy.hpp: Use detail::rebind_traits.
 373         * include/ext/pb_ds/priority_queue.hpp: Likewise.
 374         * include/ext/pb_ds/tree_policy.hpp: Likewise.
 375         * include/ext/pb_ds/trie_policy.hpp: Likewise.
 376
 377         * include/backward/hash_set (hash_set): Use __alloc_traits.
 378         * include/backward/hashtable.h (_Hashtable): Likewise.
 379         * include/ext/alloc_traits.h (__alloc_traits::allocate): Add overload
 380         taking a hint.
 381         * include/ext/extptr_allocator.h (_ExtPtr_allocator::allocate): Ignore
 382         hint.
 383         * include/ext/slist (_Slist_base): Use __alloc_traits.
 384         * include/tr1/hashtable.h (_Hashtable): Likewise.
 385         * include/tr1/regex (match_results): Use vector::const_reference
 386         instead of assuming the allocator defines it.
 387         * testsuite/backward/hash_map/23528.cc: Use allocator_traits in C++11.
 388         * testsuite/tr1/6_containers/unordered_map/capacity/29134-map.cc: Use
 389         __gnu_test::max_size.
 390         * testsuite/tr1/6_containers/unordered_multimap/capacity/
 391         29134-multimap.cc: Likewise.
 392         * testsuite/tr1/6_containers/unordered_multiset/capacity/
 393         29134-multiset.cc: Likewise.
 394         * testsuite/tr1/6_containers/unordered_set/capacity/29134-set.cc:
 395         Likewise.
 396
 397 2019-10-22  Jonathan Wakely  <jwakely@redhat.com>
 398
 399         * testsuite/util/testsuite_abi.h: Restore use of tr1/unordered_map
 400         when compiled as C++98.
 401
 402         * include/bits/memoryfwd.h (uses_allocator): Do not declare for C++98.
 403         * testsuite/17_intro/names.cc: Check uses_allocator in C++98.
 404
 405         * include/bits/alloc_traits.h
 406         (allocator_traits<allocator<T>>::allocate): Ignore hint for C++20.
 407         (allocator_traits<allocator<T>>::construct): Perform placement new
 408         directly for C++20, instead of calling allocator<T>::construct.
 409         (allocator_traits<allocator<T>>::destroy): Call destructor directly
 410         for C++20, instead of calling allocator<T>::destroy.
 411         (allocator_traits<allocator<T>>::max_size): Return value directly
 412         for C++20, instead of calling std::allocator<T>::max_size().
 413         (__do_alloc_on_copy, __do_alloc_on_move, __do_alloc_on_swap): Do not
 414         define for C++17 and up.
 415         (__alloc_on_copy, __alloc_on_move, __alloc_on_swap): Use if-constexpr
 416         for C++17 and up, instead of tag dispatching.
 417         * include/bits/allocator.h (allocator<void>): Remove for C++20.
 418         (allocator::pointer, allocator::const_pointer, allocator::reference)
 419         (allocator::const_reference, allocator::rebind): Remove for C++20.
 420         * include/bits/basic_string.h (basic_string): Use __alloc_traits to
 421         rebind allocator.
 422         * include/bits/memoryfwd.h (allocator<void>): Remove for C++20.
 423         * include/ext/debug_allocator.h: Use __alloc_traits for rebinding.
 424         * include/ext/malloc_allocator.h (malloc_allocator::~malloc_allocator)
 425         (malloc_allocator::pointer, malloc_allocator::const_pointer)
 426         (malloc_allocator::reference, malloc_allocator::const_reference)
 427         (malloc_allocator::rebind, malloc_allocator::max_size)
 428         (malloc_allocator::construct, malloc_allocator::destroy): Do not
 429         define for C++20.
 430         (malloc_allocator::_M_max_size): Define new function.
 431         * include/ext/new_allocator.h (new_allocator::~new_allocator)
 432         (new_allocator::pointer, new_allocator::const_pointer)
 433         (new_allocator::reference, new_allocator::const_reference)
 434         (new_allocator::rebind, new_allocator::max_size)
 435         (new_allocator::construct, new_allocator::destroy): Do not
 436         define for C++20.
 437         (new_allocator::_M_max_size): Define new function.
 438         * include/ext/rc_string_base.h (__rc_string_base::_Rep): Use
 439         __alloc_traits to rebind allocator.
 440         * include/ext/rope (_Rope_rep_base, _Rope_base): Likewise.
 441         (rope::rope(CharT, const allocator_type&)): Use __alloc_traits
 442         to construct character.
 443         * include/ext/slist (_Slist_base): Use __alloc_traits to rebind
 444         allocator.
 445         * include/ext/sso_string_base.h (__sso_string_base::_M_max_size):
 446         Use __alloc_traits.
 447         * include/ext/throw_allocator.h (throw_allocator): Do not use optional
 448         members of std::allocator, use __alloc_traits members instead.
 449         * include/ext/vstring.h (__versa_string): Use __alloc_traits.
 450         * include/ext/vstring_util.h (__vstring_utility): Likewise.
 451         * include/std/memory: Include <bits/alloc_traits.h>.
 452         * testsuite/20_util/allocator/8230.cc: Use __gnu_test::max_size.
 453         * testsuite/20_util/allocator/rebind_c++20.cc: New test.
 454         * testsuite/20_util/allocator/requirements/typedefs.cc: Do not check
 455         for pointer, const_pointer, reference, const_reference or rebind in
 456         C++20.
 457         * testsuite/20_util/allocator/requirements/typedefs_c++20.cc: New test.
 458         * testsuite/23_containers/deque/capacity/29134.cc: Use
 459         __gnu_test::max_size.
 460         * testsuite/23_containers/forward_list/capacity/1.cc: Likewise.
 461         * testsuite/23_containers/list/capacity/29134.cc: Likewise.
 462         * testsuite/23_containers/map/capacity/29134.cc: Likewise.
 463         * testsuite/23_containers/multimap/capacity/29134.cc: Likewise.
 464         * testsuite/23_containers/multiset/capacity/29134.cc: Likewise.
 465         * testsuite/23_containers/set/capacity/29134.cc: Likewise.
 466         * testsuite/23_containers/vector/capacity/29134.cc: Likewise.
 467         * testsuite/ext/malloc_allocator/variadic_construct.cc: Do not run
 468         test for C++20.
 469         * testsuite/ext/new_allocator/variadic_construct.cc: Likewise.
 470         * testsuite/ext/vstring/capacity/29134.cc: Use __gnu_test::max_size.
 471         * testsuite/util/replacement_memory_operators.h: Do not assume
 472         Alloc::pointer exists.
 473         * testsuite/util/testsuite_allocator.h (__gnu_test::max_size): Define
 474         helper to call max_size for any allocator.
 475
 476 2019-10-22  Andreas Schwab  <schwab@suse.de>
 477
 478         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
 479
 480 2019-10-18  Jonathan Wakely  <jwakely@redhat.com>
 481
 482         PR libstdc++/92143
 483         * libsupc++/new_opa.cc (operator new) [__APPLE__]: Increase alignment
 484         to at least sizeof(void*).
 485
 486         * include/bits/range_cmp.h (ranges::less::operator()): Inline the
 487         logic from std::less::operator() to remove the dependency on it.
 488
 489 2019-10-17  Jonathan Wakely  <jwakely@redhat.com>
 490
 491         * doc/doxygen/user.cfg.in (INPUT): Add new C++17 and C++20 headers.
 492
 493         * include/Makefile.am: Add new header.
 494         * include/Makefile.in: Regenerate.
 495         * include/bits/range_cmp.h: New header for C++20 function objects.
 496         * include/std/functional: Include new header.
 497         * testsuite/20_util/function_objects/identity/1.cc: New test.
 498         * testsuite/20_util/function_objects/range.cmp/equal_to.cc: New test.
 499         * testsuite/20_util/function_objects/range.cmp/greater.cc: New test.
 500         * testsuite/20_util/function_objects/range.cmp/greater_equal.cc: New
 501         test.
 502         * testsuite/20_util/function_objects/range.cmp/less.cc: New test.
 503         * testsuite/20_util/function_objects/range.cmp/less_equal.cc: New test.
 504         * testsuite/20_util/function_objects/range.cmp/not_equal_to.cc: New
 505         test.
 506
 507         PR libstdc++/92124
 508         * include/bits/forward_list.h
 509         (_M_move_assign(forward_list&&, false_type)): Do not use
 510         __make_move_if_noexcept, instead move unconditionally.
 511         * include/bits/stl_deque.h (_M_move_assign2(deque&&, false_type)):
 512         Likewise.
 513         * include/bits/stl_list.h (_M_move_assign(list&&, false_type)):
 514         Likewise.
 515         * include/bits/stl_vector.h (_M_move_assign(vector&&, false_type)):
 516         Likewise.
 517         * testsuite/23_containers/vector/92124.cc: New test.
 518
 519 2019-10-16  Jonathan Wakely  <jwakely@redhat.com>
 520
 521         * include/bits/c++config (_GLIBCXX_BUILTIN_IS_SAME_AS): Define to
 522         one of __is_same_as or __is_same when available.
 523         * include/std/concepts (__detail::__same_as): Use std::is_same_v.
 524         * include/std/type_traits (is_same) [_GLIBCXX_BUILTIN_IS_SAME_AS]:
 525         Use new macro instead of __is_same_as.
 526         (is_same) [!_GLIBCXX_BUILTIN_IS_SAME_AS]: Restore partial
 527         specialization.
 528         (is_same_v) [_GLIBCXX_BUILTIN_IS_SAME_AS]: Use new macro.
 529         (is_same_v) [!_GLIBCXX_BUILTIN_IS_SAME_AS]: Use std::is_same.
 530
 531 2019-10-16  François Dumont  <fdumont@gcc.gnu.org>
 532
 533         * src/c++11/debug.cc (print_field): Replace constness_names <unknown>
 534         entry with <unknown constness>. Replace state_names <unknown> entry with
 535         <unknown state>.
 536
 537 2019-10-11  Jonathan Wakely  <jwakely@redhat.com>
 538
 539         * include/Makefile.am: Add new header.
 540         * include/Makefile.in: Regenerate.
 541         * include/precompiled/stdc++.h: Include <concepts>.
 542         * include/std/concepts: New header for C++20.
 543         * include/std/version (__cpp_lib_concepts): Define.
 544         * scripts/create_testsuite_files: Look for test files in new std
 545         directory.
 546         * testsuite/libstdc++-dg/conformance.exp: Likewise.
 547         * testsuite/std/concepts/concepts.callable/invocable.cc: New test.
 548         * testsuite/std/concepts/concepts.callable/regular_invocable.cc: New
 549         test.
 550         * testsuite/std/concepts/concepts.callable/relation.cc: New test.
 551         * testsuite/std/concepts/concepts.callable/strictweakorder.cc: New
 552         test.
 553         * testsuite/std/concepts/concepts.lang/concept.arithmetic/
 554         floating_point.cc: New test.
 555         * testsuite/std/concepts/concepts.lang/concept.arithmetic/integral.cc:
 556         New test.
 557         * testsuite/std/concepts/concepts.lang/concept.arithmetic/
 558         signed_integral.cc: New test.
 559         * testsuite/std/concepts/concepts.lang/concept.arithmetic/
 560         unsigned_integral.cc: New test.
 561         * testsuite/std/concepts/concepts.lang/concept.assignable/1.cc: New
 562         test.
 563         * testsuite/std/concepts/concepts.lang/concept.common/1.cc: New test.
 564         * testsuite/std/concepts/concepts.lang/concept.commonref/1.cc: New
 565         test.
 566         * testsuite/std/concepts/concepts.lang/concept.constructible/1.cc:
 567         New test.
 568         * testsuite/std/concepts/concepts.lang/concept.convertible/1.cc:
 569         New test.
 570         * testsuite/std/concepts/concepts.lang/concept.copyconstructible/1.cc:
 571         New test.
 572         * testsuite/std/concepts/concepts.lang/concept.defaultconstructible/
 573         1.cc: New test.
 574         * testsuite/std/concepts/concepts.lang/concept.derived/1.cc:
 575         New test.
 576         * testsuite/std/concepts/concepts.lang/concept.destructible/1.cc:
 577         New test.
 578         * testsuite/std/concepts/concepts.lang/concept.moveconstructible/1.cc:
 579         New test.
 580         * testsuite/std/concepts/concepts.lang/concept.same/1.cc:
 581         New test.
 582         * testsuite/std/concepts/concepts.lang/concept.swappable/swap.cc:
 583         New test.
 584         * testsuite/std/concepts/concepts.lang/concept.swappable/swappable.cc:
 585         New test.
 586         * testsuite/std/concepts/concepts.lang/concept.swappable/
 587         swappable_with.cc: New test.
 588         * testsuite/std/concepts/concepts.object/copyable.cc: New test.
 589         * testsuite/std/concepts/concepts.object/movable.cc: New test.
 590         * testsuite/std/concepts/concepts.object/regular.cc: New test.
 591         * testsuite/std/concepts/concepts.object/semiregular.cc: New test.
 592
 593         * include/std/type_traits (is_same): Replace partial specialization
 594         by using __is_same_as built-in in primary template.
 595         (is_same_v): Use __is_same_as built-in instead of instantiating the
 596         is_same trait.
 597
 598         PR libstdc++/92059
 599         * include/tr2/dynamic_bitset (__dynamic_bitset_base): Define all
 600         special member functions as defaulted. Add noexcept to most members.
 601         (__dynamic_bitset_base(size_t, unsigned long long, const _Alloc&)):
 602         Mask off unwanted bits in the __val parameter. Avoid undefined left
 603         shifts.
 604         (__dynamic_bitset_base::_M_assign): Remove.
 605         (__dynamic_bitset_base::_M_do_reset): Use std::fill.
 606         (__dynamic_bitset_base::_M_are_all_aux): Avoid integer promotion when
 607         block_type has lower rank than int.
 608         (dynamic_bitset): Add noexcept to most members. Use injected-class-name
 609         in return types and parameter types.
 610         (dynamic_bitset::_M_Nb): Add default member initializer.
 611         (dynamic_bitset(), dynamic_bitset(const dynamic_bitset&)): Define as
 612         defaulted.
 613         (dynamic_bitset(dynamic_bitset&&)): Clear source object after move.
 614         (dynamic_bitset::operator=(const dynamic_bitset&)): Define as
 615         defaulted.
 616         (dynamic_bitset::operator=(dynamic_bitset&&)): Add noexcept-specifier.
 617         Define without using swap, to propagate allocator correctly.
 618         (dynamic_bitset(const char*, const _Alloc&)): Use strlen.
 619         (dynamic_bitset::_M_do_sanitize, dynamic_bitset::_M_do_fill): Use
 620         casts to avoid unwanted integer promotions.
 621         (dynamic_bitset::_M_copy_from_ptr): Rearrange template parameters and
 622         add default template arguments and default argument to simplify usage.
 623         (dynamic_bitset::_M_copy_from_string): Adjust call to _M_copy_from_ptr.
 624         (operator==(const dynamic_bitset&, const dynamic_bitset&))
 625         (operator<(const dynamic_bitset&, const dynamic_bitset&)): Use _M_Nb.
 626         * include/tr2/dynamic_bitset.tcc (dynamic_bitset::_M_copy_from_ptr):
 627         Adjust template parameters to match declaration.
 628         * testsuite/tr2/dynamic_bitset/cmp.cc: New test.
 629         * testsuite/tr2/dynamic_bitset/cons.cc: New test.
 630         * testsuite/tr2/dynamic_bitset/copy.cc: New test.
 631         * testsuite/tr2/dynamic_bitset/move.cc: New test.
 632         * testsuite/tr2/dynamic_bitset/pr92059.cc: New test.
 633
 634         * include/bits/charconv.h (__to_chars_len): Avoid -Wsign-compare
 635         warnings.
 636
 637 2019-10-10  Jonathan Wakely  <jwakely@redhat.com>
 638
 639         PR libstdc++/91057
 640         * src/c++98/locale.cc [_GLIBCXX_LONG_DOUBLE_COMPAT]
 641         (find_ldbl_sync_facet): Fix parameter type and missing return.
 642
 643 2019-10-09  Marek Polacek  <polacek@redhat.com>
 644
 645         PR c++/91364 - P0388R4: Permit conversions to arrays of unknown bound.
 646         PR c++/69531 - DR 1307: Differently bounded array parameters.
 647         PR c++/88128 - DR 330: Qual convs and pointers to arrays of pointers.
 648         * testsuite/23_containers/span/lwg3255.cc: Adjust test to match the
 649         post-P0388R4 behavior.
 650
 651 2019-10-09  Jonathan Wakely  <jwakely@redhat.com>
 652
 653         PR libstdc++/91057
 654         * src/c++98/locale.cc (locale::id::_M_id()) [__GTHREADS]: Use atomic
 655         compare-exchange or double-checked lock to ensure only one thread sets
 656         the _M_index variable.
 657         [_GLIBCXX_LONG_DOUBLE_COMPAT]: Call find_ldbl_sync_facet to detect
 658         facets that share another facet's ID.
 659         [_GLIBCXX_LONG_DOUBLE_COMPAT] (find_ldbl_sync_facet): New function.
 660
 661         PR libstdc++/78552
 662         * src/c++98/locale_init.cc (locale::classic()): Do not construct a new
 663         locale object for every call.
 664         (locale::_S_initialize_once()): Construct C locale here.
 665
 666 2019-10-08  Jonathan Wakely  <jwakely@redhat.com>
 667
 668         * doc/Makefile.am (doc-html-docbook-regenerate): New target.
 669         (${docbook_outdir}/html): Do not create unused 'html/ext' directory.
 670         * doc/Makefile.in: Regenerate.
 671         * doc/xml/manual/documentation_hacking.xml: Document new target.
 672         * doc/html/*: Regenerate.
 673
 674         * doc/xml/manual/allocator.xml: Use archived copy of CUJ article.
 675         * doc/html/*: Regenerate.
 676
 677 2019-10-06  François Dumont  <fdumont@gcc.gnu.org>
 678
 679         * include/bits/stl_algo.h
 680         (__copy_n_a(_IIte, _Size, _OIte)): New.
 681         (__copy_n_a(istreambuf_iterator<>, _Size, _CharT*)): New declaration.
 682         (__copy_n(_IIte, _Size, _OIte, input_iterator_tag)): Adapt to use
 683         latter.
 684         * include/bits/streambuf_iterator.h (istreambuf_iterator<>): Declare
 685         std::__copy_n_a friend.
 686         (__copy_n_a(istreambuf_iterator<>, _Size, _CharT*)): New.
 687         * testsuite/25_algorithms/copy_n/istreambuf_iterator/1.cc: New.
 688         * testsuite/25_algorithms/copy_n/istreambuf_iterator/1_neg.cc: New.
 689         * testsuite/25_algorithms/copy_n/istreambuf_iterator/2_neg.cc: New.
 690
 691         * include/bits/stl_iterator_base_types.h (__iterator_category_t): Define
 692         for C++11.
 693         (_RequireInputIte): Likewise and use __enable_if_t.
 694         * include/std/numeric
 695         (__is_random_access_iter): Use __iterator_category_t.
 696
 697         * include/bits/stl_algo.h (copy_n): Add __glibcxx_requires_can_increment
 698         debug checks.
 699         * testsuite/25_algorithms/copy_n/debug/1_neg.cc: New.
 700         * testsuite/25_algorithms/copy_n/debug/2_neg.cc: New.
 701
 702 2019-10-04  François Dumont  <fdumont@gcc.gnu.org>
 703
 704         * include/debug/forward_list
 705         (_Sequence_traits<__debug::forward_list<>>::_S_size): Returns __dp_sign
 706         distance when not empty.
 707         * include/debug/list (_Sequence_traits<__debug::list<>>::_S_size):
 708         Likewise.
 709         * include/debug/helper_functions.h (__dp_sign_max_size): New
 710         _Distance_precision enum entry.
 711         (__valid_range_aux(_IIte, _IIte, _Distance_traits<>::__type,
 712         __false_type)): Adapt.
 713         * include/debug/safe_iterator.tcc
 714         (_Safe_iterator<>::_M_get_distance_to(const _Safe_iterator&)): Review
 715         distance computation.
 716
 717 2019-10-04  Jonathan Wakely  <jwakely@redhat.com>
 718
 719         PR libstdc++/81091
 720         PR libstdc++/91947
 721         * configure.ac: Use AC_SYS_LARGEFILE to enable 64-bit file APIs.
 722         * config.h.in: Regenerate:
 723         * configure: Regenerate:
 724         * include/Makefile.am (${host_builddir}/largefile-config.h): New
 725         target to generate config header for filesystem library.
 726         (${host_builddir}/c++config.h): Rename macros for large file support.
 727         * include/Makefile.in: Regenerate.
 728         * src/c++17/fs_dir.cc: Include new config header.
 729         * src/c++17/fs_ops.cc: Likewise.
 730         (filesystem::file_size): Use uintmax_t for size.
 731         * src/filesystem/dir.cc: Include new config header.
 732         * src/filesystem/ops.cc: Likewise.
 733         (experimental::filesystem::file_size): Use uintmax_t for size.
 734
 735         * testsuite/util/testsuite_abi.h: Use std::unordered_map instead of
 736         std::tr1::unordered_map.
 737         * testsuite/util/testsuite_allocator.h: Likewise.
 738
 739         * include/tr1/hashtable.h: Add header for __gnu_cxx::__alloc_traits.
 740
 741         * include/tr1/hashtable.h (tr1::_Hashtable::_M_allocate_node): Use
 742         __gnu_cxx::__alloc_traits for allocator construct function.
 743         (tr1::_Hashtable::_M_deallocate_node): Likewise for destroy function.
 744
 745         * include/precompiled/stdc++.h: Include <span> for C++20.
 746         * testsuite/17_intro/names.cc: Do not define 'e' for C++20.
 747
 748 2019-10-03  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 749
 750         * include/parallel/multiway_merge.h (_RAIter3): Replace _C by _Cp.
 751
 752 2019-10-02  Jonathan Wakely  <jwakely@redhat.com>
 753
 754         * config/abi/pre/gnu.ver: Tighten up greedy wildcards.
 755
 756         * doc/xml/manual/parallel_mode.xml: Add caveat about support for
 757         recent standards.
 758         * doc/html/*: Regenerate.
 759
 760 2019-10-01  Jonathan Wakely  <jwakely@redhat.com>
 761
 762         * include/experimental/algorithm (experimental::sample): Qualify call
 763         to __sample correctly.
 764         * include/parallel/algo.h (sample, for_each_n): Add using-declarations
 765         for algorithms that don't have parallel implementations.
 766
 767         * include/parallel/algobase.h (equal, lexicographical_compare): Add
 768         _GLIBCXX20_CONSTEXPR and dispatch to sequential algorithm when being
 769         constant evaluated.
 770         * include/parallel/algorithmfwd.h (equal, lexicographical_compare):
 771         Add _GLIBCXX20_CONSTEXPR.
 772
 773         * testsuite/17_intro/using_namespace_std_tr1_neg.cc: Skip test for
 774         parallel mode.
 775         * testsuite/20_util/hash/84998.cc: Likewise.
 776         * testsuite/23_containers/deque/types/pmr_typedefs_debug.cc: Likewise.
 777         * testsuite/23_containers/forward_list/pmr_typedefs_debug.cc: Likewise.
 778         * testsuite/23_containers/list/pmr_typedefs_debug.cc: Likewise.
 779         * testsuite/23_containers/map/pmr_typedefs_debug.cc: Likewise.
 780         * testsuite/23_containers/multimap/pmr_typedefs_debug.cc: Likewise.
 781         * testsuite/23_containers/multiset/pmr_typedefs_debug.cc: Likewise.
 782         * testsuite/23_containers/set/pmr_typedefs_debug.cc: Likewise.
 783         * testsuite/23_containers/unordered_map/pmr_typedefs_debug.cc:
 784         Likewise.
 785         * testsuite/23_containers/unordered_multimap/pmr_typedefs_debug.cc:
 786         Likewise.
 787         * testsuite/23_containers/unordered_multiset/pmr_typedefs_debug.cc:
 788         Likewise.
 789         * testsuite/23_containers/unordered_set/pmr_typedefs_debug.cc:
 790         Likewise.
 791         * testsuite/23_containers/vector/cons/destructible_debug_neg.cc:
 792         Likewise.
 793         * testsuite/23_containers/vector/types/pmr_typedefs_debug.cc: Likewise.
 794         * testsuite/25_algorithms/binary_search/partitioned.cc: Likewise.
 795         * testsuite/25_algorithms/copy/86658.cc: Likewise.
 796         * testsuite/25_algorithms/equal_range/partitioned.cc: Likewise.
 797         * testsuite/25_algorithms/lexicographical_compare/71545.cc: Likewise.
 798         * testsuite/25_algorithms/lower_bound/partitioned.cc: Likewise.
 799         * testsuite/25_algorithms/upper_bound/partitioned.cc: Likewise.
 800
 801         * include/parallel/algo.h: Replace non-reserved names.
 802         * include/parallel/multiway_merge.h: Likewise.
 803         * include/parallel/multiway_mergesort.h: Likewise.
 804         * include/parallel/numericfwd.h: Likewise.
 805         * testsuite/17_intro/names.cc: Add RAI to test macros.
 806
 807 2019-09-30  François Dumont  <fdumont@gcc.gnu.org>
 808
 809         * include/debug/array: Add C++20 constexpr to comparison operators.
 810         * testsuite/23_containers/array/tuple_interface/get_debug_neg.cc: Adapt
 811         dg-error line numbers.
 812         * testsuite/23_containers/array/tuple_interface/
 813         tuple_element_debug_neg.cc: Likewise.
 814
 815 2019-09-30  Andreas Tobler  <andreast@gcc.gnu.org>
 816
 817         * include/experimental/internet: Include netinet/in.h if we have
 818         _GLIBCXX_HAVE_NETINET_IN_H defined.
 819
 820         * testsuite/ext/special_functions/airy_ai/check_nan.cc: Ignore the
 821         FreeBSD warning about lower advertised precision of tgammal.
 822         * testsuite/ext/special_functions/airy_bi/check_nan.cc: Likewise.
 823         * testsuite/special_functions/07_cyl_bessel_i/check_nan.cc: Likewise.
 824         * testsuite/special_functions/08_cyl_bessel_j/check_nan.cc: Likewise.
 825         * testsuite/special_functions/09_cyl_bessel_k/check_nan.cc: Likewise.
 826         * testsuite/special_functions/10_cyl_neumann/check_nan.cc: Likewise.
 827         * testsuite/special_functions/19_sph_bessel/check_nan.cc: Likewise.
 828         * testsuite/special_functions/21_sph_neumann/check_nan.cc: Likewise.
 829         * testsuite/tr1/5_numerical_facilities/special_functions/
 830         08_cyl_bessel_i/check_nan.cc: Likewise.
 831         * testsuite/tr1/5_numerical_facilities/special_functions/
 832         09_cyl_bessel_j/check_nan.cc: Likewise.
 833         * testuite/tr1/5_numerical_facilities/special_functions/
 834         10_cyl_bessel_k/check_nan.cc: Likewise.
 835         * testsuite/tr1/5_numerical_facilities/special_functions/
 836         11_cyl_neumann/check_nan.cc: Likewise.
 837         * testsuite/tr1/5_numerical_facilities/special_functions/
 838         21_sph_bessel/check_nan.cc: Likewise.
 839         * testsuite/tr1/5_numerical_facilities/special_functions/
 840         23_sph_neumann/check_nan.cc: Likewise.
 841
 842 2019-09-30  Jonathan Wakely  <jwakely@redhat.com>
 843
 844         * include/std/span (span(element_type(&)[N]))
 845         (span(array<value_type, N>&), span(const array<value_type, N>&)):
 846         Deduce array element type to allow safe const conversions (LWG 3255).
 847         [!_GLIBCXX_P1394] (span(Container&), span(const Container&)): Use
 848         remove_cv_t on arguments to __is_std_span and __is_std_array.
 849         * testsuite/23_containers/span/lwg3255.cc: New test.
 850
 851         PR libstdc++/77936
 852         * include/parallel/checkers.h (__is_sorted): Remove unused variable.
 853
 854 2019-09-28  François Dumont  <fdumont@gcc.gnu.org>
 855
 856         * include/bits/stl_algo.h (merge): Fix documentation.
 857         * include/debug/functions.h (__check_sorted_aux): Add C++20 constexpr.
 858         (__check_sorted): Likewise and remove nested irreflexive check.
 859         (__check_sorted_set_aux, __check_sorted_set): Add C++20 constexpr.
 860         (__check_partitioned_lower, __check_partitioned_upper): Likewise.
 861         (_Irreflexive_checker::_S_is_valid): Likewise.
 862         (__is_irreflexive, __is_irreflexive_pred): Likewise.
 863         * include/debug/helper_functions.h (__get_distance): Add constexpr.
 864         (__valid_range_aux): Add C++20 constexpr.
 865         (__valid_range(_Iter, _Iter, _Distance_traits<_Iter>::__type&)):
 866         Likewise and add std::is_constant_evaluated check.
 867         (__valid_range_aux(_Iter, _Iter, std::input_iterator_tag)): New.
 868         (__valid_range_aux(_Iter, _Iter, std::random_accss_iterator_tag)): New.
 869         (__valid_range_aux(_Integral, _Integral, std::__true_type)): New,
 870         use latter.
 871         (__valid_range(_Iter, _Iter)): Adapt to use latter, add constexpr and
 872         __builtin_is_contant_evaludated check..
 873         (__can_advance, __base): Add constexpr.
 874         * include/debug/macros.h [_GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED]
 875         (_GLIBCXX_DEBUG_VERIFY_COND_AT): New.
 876         (__glibcxx_check_sorted): Use __glibcxx_check_irreflexive.
 877         (__glibcxx_check_sorted_pred): Use __glibcxx_check_irreflexive_pred.
 878         * testsuite/25_algorithms/binary_search/constexpr.cc: Use irreflexive
 879         std::less.
 880         * testsuite/25_algorithms/is_sorted/constexpr.cc: Likewise.
 881         * testsuite/25_algorithms/merge/constexpr.cc: Fix order in camm. Fix
 882         lambda to be irreflexive.
 883
 884 2019-09-27  Maciej W. Rozycki  <macro@wdc.com>
 885
 886         * configure: Regenerate.
 887
 888 2019-09-27  Jonathan Wakely  <jwakely@redhat.com>
 889
 890         PR libstdc++/91910
 891         * src/c++11/debug.cc (_Safe_iterator_base::_M_detach()): Load pointer
 892         atomically and lock the mutex before accessing the sequence.
 893         (_Safe_local_iterator_base::_M_detach()): Likewise.
 894         (_Safe_iterator_base::_M_reset()): Clear _M_sequence atomically.
 895
 896 2019-09-26  Jonathan Wakely  <jwakely@redhat.com>
 897
 898         * include/debug/array (to_array): Define for debug mode.
 899
 900         * include/bits/stl_pair.h (pair): Add _GLIBCXX20_CONSTEXPR to
 901         piecewise construction constructor, assignment operators, and swap.
 902         * include/std/tuple (pair::pair(piecewise_construct_t, tuple, tuple)):
 903         Add _GLIBCXX20_CONSTEXPR.
 904         (pair::pair(tuple, tuple, _Index_tuple, _Index_tuple)): Likewise.
 905         * testsuite/20_util/pair/constexpr_assign.cc: New test.
 906         * testsuite/20_util/pair/constexpr_swap.cc: New test.
 907
 908         * include/experimental/internet (operator==, operator<): Fix loop
 909         condition to avoid reading past the end of the array.
 910
 911         * include/std/array: Remove references to profile mode.
 912         * include/std/bitset: Likewise.
 913         * include/std/deque: Likewise.
 914         * include/std/forward_list: Likewise.
 915         * include/std/list: Likewise.
 916         * include/std/map: Likewise.
 917         * include/std/set: Likewise.
 918         * include/std/unordered_map: Likewise.
 919         * include/std/unordered_set: Likewise.
 920         * include/std/vector: Likewise.
 921         * testsuite/17_intro/headers/c++1998/profile_mode.cc: New test.
 922         * testsuite/17_intro/headers/c++2011/profile_mode.cc: New test.
 923
 924 2019-09-25  Jonathan Wakely  <jwakely@redhat.com>
 925
 926         * include/bits/regex.h
 927         (basic_regex::assign(const C*, size_t, flag_type)): Add default
 928         argument (LWG 3296).
 929         * testsuite/28_regex/basic_regex/assign/char/lwg3296.cc: New test.
 930         * testsuite/28_regex/basic_regex/assign/wchar_t/lwg3296.cc: New test.
 931
 932 2019-09-24  Jonathan Wakely  <jwakely@redhat.com>
 933
 934         * include/std/variant (variant::index()): Remove impossible case.
 935
 936         PR libstdc++/91871
 937         * testsuite/util/testsuite_hooks.h
 938         (conversion::iterator_to_const_iterator()): Do not return an invalid
 939         iterator. Test direct-initialization and direct-list-initialization
 940         as well as implicit conversion.
 941
 942 2019-09-23  Jonathan Wakely  <jwakely@redhat.com>
 943
 944         PR libstdc++/91788 (partial)
 945         * include/std/variant (variant::index()): Improve codegen for cases
 946         where conversion to size_t already works correctly.
 947
 948 2019-09-23  Andreas Schwab  <schwab@suse.de>
 949
 950         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
 951
 952 2019-09-12  Jonathan Wakely  <jwakely@redhat.com>
 953
 954         PR libstdc++/91748
 955         * include/bits/stl_algo.h (for_each_n): Fix random access iterator
 956         case.
 957         * testsuite/25_algorithms/for_each/for_each_n.cc: Test with random
 958         access iterators.
 959
 960 2019-09-11  Jonathan Wakely  <jwakely@redhat.com>
 961
 962         * python/libstdcxx/v6/xmethods.py (SharedPtrUseCountWorker.__call__):
 963         Fix syntax error.
 964
 965         * testsuite/20_util/result_of/sfinae_friendly_1.cc: Add -Wno-volatile
 966         for C++2a and up. Define HAS_52748_FIXED and fix incorrect tests.
 967         * testsuite/tr1/3_function_objects/result_of.cc: Add -Wno-volatile
 968         for C++2a and up.
 969
 970 2019-09-10  Jonathan Wakely  <jwakely@redhat.com>
 971
 972         * include/std/type_traits (__do_common_type_impl): Implement
 973         additional COND-RES(CREF(D1), CRED(D2)) condition for C++20.
 974         (basic_common_reference, common_reference, common_reference_t): Define
 975         for C++20.
 976         * testsuite/20_util/common_reference/requirements/alias_decl.cc: New
 977         test.
 978         * testsuite/20_util/common_reference/requirements/
 979         explicit_instantiation.cc: New test.
 980         * testsuite/20_util/common_reference/requirements/typedefs.cc: New
 981         test.
 982
 983         * include/std/charconv (to_chars): Rename to __to_chars_i. Define
 984         non-template overloads for each signed and unsigned integer type and
 985         char. Define deleted overload for bool (LWG 3266).
 986         * testsuite/20_util/to_chars/1_neg.cc: Remove.
 987         * testsuite/20_util/to_chars/3.cc: New test.
 988         * testsuite/20_util/to_chars/lwg3266.cc: New test.
 989
 990 2019-09-10  Christophe Lyon  <christophe.lyon@st.com>
 991
 992         * acinclude.m4: Handle uclinux*.
 993         * configure: Regenerate.
 994         * configure.host: Handle uclinux*
 995
 996 2019-09-10  Christophe Lyon  <christophe.lyon@st.com>
 997         Mickaël Guêné <mickael.guene@st.com>
 998
 999         * libsupc++/eh_personality.cc (get_ttype_entry): Add FDPIC
1000         support.
1001
1002 2019-09-10  Jonathan Wakely  <jwakely@redhat.com>
1003
1004         PR libstdc++/91711
1005         * testsuite/23_containers/span/get_neg.cc: Avoid ambiguity due to
1006         0ul being a valid null pointer constant.
1007
1008         * include/std/type_traits (__remove_cv_t): New alias template.
1009         (is_void, is_integral, is_floating_point, is_pointer)
1010         (is_member_object_pointer, is_member_function_pointer, is_null_pointer)
1011         (is_member_point), __is_signed_integer, __is_unsigned_integer)
1012         (__make_unsigned_selector, __make_signed_selector, remove_pointer)
1013         (__decay_selector): Use __remove_cv_t.
1014         (remove_cv): Add partial specializations for cv-qualified types.
1015         (__decay_t): New alias template.
1016         (__decay_and_strip, __common_type_impl, __result_of_impl): Use
1017         __decay_t.
1018         (__enable_if_t): Move earlier in the file.
1019         (_Require): Use __enable_if_t.
1020         (swap(T&, T&)): Use _Require.
1021         (swap(T(&)[N])): Use __enable_if_t.
1022
1023 2019-09-09  Edward Smith-Rowland  <3dw4rd@verizon.net>
1024
1025         Implement C++20 p1424 - 'constexpr' feature macro concerns,
1026         Issue 3256 - Feature testing macro for constexpr algorithms,
1027         and Issue 3257 - Missing feature testing macro update from P0858.
1028         * include/std/version (__cpp_lib_constexpr_algorithms): Bump value.
1029         * include/bits/algorithmfwd.h: Ditto.
1030         * include/std/utility: Ditto.
1031         * testsuite/25_algorithms/constexpr_macro.cc: Ditto.
1032         * testsuite/25_algorithms/cpp_lib_constexpr.cc: New check for
1033         __cpp_lib_constexpr macro in <algorith>.
1034         * testsuite/20_util/exchange/constexpr.cc: Add check for
1035         __cpp_lib_constexpr macro in <utility>.
1036         * testsuite/25_algorithms/adjacent_find/constexpr.cc: Remove check for
1037         __cpp_lib_constexpr_algorithms.
1038         * testsuite/25_algorithms/all_of/constexpr.cc: Ditto.
1039         * testsuite/25_algorithms/any_of/constexpr.cc: Ditto.
1040         * testsuite/25_algorithms/binary_search/constexpr.cc: Ditto.
1041         * testsuite/25_algorithms/copy/constexpr.cc: Ditto.
1042         * testsuite/25_algorithms/copy_backward/constexpr.cc: Ditto.
1043         * testsuite/25_algorithms/copy_if/constexpr.cc: Ditto.
1044         * testsuite/25_algorithms/copy_n/constexpr.cc: Ditto.
1045         * testsuite/25_algorithms/count/constexpr.cc: Ditto.
1046         * testsuite/25_algorithms/count_if/constexpr.cc: Ditto.
1047         * testsuite/25_algorithms/equal/constexpr.cc: Ditto.
1048         * testsuite/25_algorithms/equal_range/constexpr.cc: Ditto.
1049         * testsuite/25_algorithms/fill/constexpr.cc: Ditto.
1050         * testsuite/25_algorithms/fill_n/constexpr.cc: Ditto.
1051         * testsuite/25_algorithms/find/constexpr.cc: Ditto.
1052         * testsuite/25_algorithms/find_end/constexpr.cc: Ditto.
1053         * testsuite/25_algorithms/find_first_of/constexpr.cc: Ditto.
1054         * testsuite/25_algorithms/find_if/constexpr.cc: Ditto.
1055         * testsuite/25_algorithms/find_if_not/constexpr.cc: Ditto.
1056         * testsuite/25_algorithms/for_each/constexpr.cc: Ditto.
1057         * testsuite/25_algorithms/generate/constexpr.cc: Ditto.
1058         * testsuite/25_algorithms/generate_n/constexpr.cc: Ditto.
1059         * testsuite/25_algorithms/is_heap/constexpr.cc: Ditto.
1060         * testsuite/25_algorithms/is_heap_until/constexpr.cc: Ditto.
1061         * testsuite/25_algorithms/is_partitioned/constexpr.cc: Ditto.
1062         * testsuite/25_algorithms/is_permutation/constexpr.cc: Ditto.
1063         * testsuite/25_algorithms/is_sorted/constexpr.cc: Ditto.
1064         * testsuite/25_algorithms/is_sorted_until/constexpr.cc: Ditto.
1065         * testsuite/25_algorithms/lexicographical_compare/constexpr.cc: Ditto.
1066         * testsuite/25_algorithms/lower_bound/constexpr.cc: Ditto.
1067         * testsuite/25_algorithms/merge/constexpr.cc: Ditto.
1068         * testsuite/25_algorithms/mismatch/constexpr.cc: Ditto.
1069         * testsuite/25_algorithms/none_of/constexpr.cc: Ditto.
1070         * testsuite/25_algorithms/partition_copy/constexpr.cc: Ditto.
1071         * testsuite/25_algorithms/partition_point/constexpr.cc: Ditto.
1072         * testsuite/25_algorithms/remove/constexpr.cc: Ditto.
1073         * testsuite/25_algorithms/remove_copy/constexpr.cc: Ditto.
1074         * testsuite/25_algorithms/remove_copy_if/constexpr.cc: Ditto.
1075         * testsuite/25_algorithms/remove_if/constexpr.cc: Ditto.
1076         * testsuite/25_algorithms/replace_copy/constexpr.cc: Ditto.
1077         * testsuite/25_algorithms/replace_copy_if/constexpr.cc: Ditto.
1078         * testsuite/25_algorithms/replace_if/constexpr.cc: Ditto.
1079         * testsuite/25_algorithms/reverse_copy/constexpr.cc: Ditto.
1080         * testsuite/25_algorithms/rotate_copy/constexpr.cc: Ditto.
1081         * testsuite/25_algorithms/search/constexpr.cc: Ditto.
1082         * testsuite/25_algorithms/search_n/constexpr.cc: Ditto.
1083         * testsuite/25_algorithms/set_difference/constexpr.cc: Ditto.
1084         * testsuite/25_algorithms/set_intersection/constexpr.cc: Ditto.
1085         * testsuite/25_algorithms/set_symmetric_difference/constexpr.cc: Ditto.
1086         * testsuite/25_algorithms/set_union/constexpr.cc: Ditto.
1087         * testsuite/25_algorithms/transform/constexpr.cc: Ditto.
1088         * testsuite/25_algorithms/unique/constexpr.cc: Ditto.
1089         * testsuite/25_algorithms/unique_copy/constexpr.cc: Ditto.
1090         * testsuite/25_algorithms/upper_bound/constexpr.cc: Ditto.
1091
1092 2019-09-09  Edward Smith-Rowland  <3dw4rd@verizon.net>
1093
1094         Update docs for recent <span> and constexpr lib changes.
1095         * doc/xml/manual/status_cxx2020.xml: Update p0202r3, p0858r0, p0879r0,
1096         p1023r0, p1085r2 status.
1097         * doc/html/manual/status.html: Regenerate.
1098
1099 2019-09-09  Antony Polukhin  <antoshkka@gmail.com>
1100
1101         * include/bits/charconv.h (__detail::__to_chars_10_impl): Replace
1102         final offsets with constants.
1103
1104 2019-09-09  Jonathan Wakely  <jwakely@redhat.com>
1105
1106         * include/bits/range_access.h (__adl_to_address): Remove.
1107         * include/std/span (__is_base_derived_safe_convertible_v): Replace
1108         with span::__is_compatible.
1109         (__is_std_array_v): Replace with __is_std_array class template and
1110         partial specializations.
1111         (__is_std_array, __is_std_span): New class templates and partial
1112         specializations.
1113         (span::__is_compatible): New alias template for SFINAE constraints.
1114         (span::span(element_type (&)[N])): Remove redundant constraints. Do
1115         not use __adl_data to obtain a pointer.
1116         (span::span(array<value_type, N>&)): Likewise.
1117         (span::span(const array<value_type, N>&)): Likewise.
1118         [_GLIBCXX_P1394] (span::iter_reference_t, span::iterator_t)
1119         (span::iter_value_t, span::derived_from): New alias templates for
1120         SFINAE constraints, until the equivalents are supported in <concepts>
1121         and <iterator>.
1122         [_GLIBCXX_P1394] (span::__is_compatible_iterator): New alias template
1123         for SFINAE constraints.
1124         [_GLIBCXX_P1394] (span::is_compatible_range): New class template for
1125         SFINAE constraints.
1126         [_GLIBCXX_P1394] (span::span(Range&&)): Improve constraints.
1127         [_GLIBCXX_P1394] (span::span(ContiguousIterator, Sentinel)): Likewise.
1128         Use std::to_address instead of __adl_to_address.
1129         [_GLIBCXX_P1394] (span::span(ContiguousIterator, size_type)): Likewise.
1130         [!_GLIBCXX_P1394] (span::__is_compatible_container): New alias
1131         template for SFINAE constraints.
1132         [!_GLIBCXX_P1394] (span::span(Container&))
1133         (span::span(const Container&)): Improve constraints.
1134         [!_GLIBCXX_P1394] (span::span(pointer, size_type))
1135         (span::span(pointer, pointer)): Remove redundant cast of pointer.
1136         (span(const span<OType, OExtent>&)): New constructor.
1137
1138 2019-09-06  Jonathan Wakely  <jwakely@redhat.com>
1139
1140         * include/bits/range_access.h (ssize): Define for C++20.
1141         * testsuite/24_iterators/range_access_cpp20.cc: New test.
1142         * doc/xml/manual/status_cxx2020.xml: Update P1227R2 status.
1143         * doc/html/*: Regenerate.
1144
1145 2019-09-06  Florian Weimer  <fweimer@redhat.com>
1146
1147         * configure: Regenerate.
1148
1149 2019-09-05  Jonathan Wakely  <jwakely@redhat.com>
1150
1151         * doc/xml/manual/status_cxx2020.xml: Update status for P0122R7 and
1152         P1024R3. Remove entry for P0920R2.
1153         * include/std/span  (__cpp_lib_span): Change value.
1154         (__extent_storage, __extent_storage<dynamic_extent>): Remove default
1155         constructor.
1156         (span): Replace __extent_storage base class with data member.
1157         (span::_S_subspan_extent): New function.
1158         (span::empty()): Add nodiscard attribute.
1159         (span::front, span::back, span::operator[]): Check preconditions.
1160         (span::first, span::last, span::subspan): Add noexcept. Improve
1161         precondition checks (LWG 3103).
1162         (get): Remove redundant condition from static_assert.
1163         (tuple_element<I, span<T, E>>): Fix static_assert message and simplify.
1164         (as_writable_bytes): Add inline specifier.
1165         * include/std/version (__cpp_lib_span): Change value.
1166         * testsuite/23_containers/span/back_neg.cc: Remove stray semi-colon.
1167         * testsuite/23_containers/span/front_neg.cc: Likewise.
1168         * testsuite/23_containers/span/index_op_neg.cc: Likewise.
1169         * testsuite/23_containers/span/last_neg.cc: Improve test.
1170         * testsuite/23_containers/span/subspan_neg.cc: Likewise.
1171         * testsuite/23_containers/span/1.cc: New test.
1172         * testsuite/23_containers/span/2.cc: New test.
1173         * testsuite/23_containers/span/back_assert_neg.cc: New test.
1174         * testsuite/23_containers/span/first_2_assert_neg.cc: New test.
1175         * testsuite/23_containers/span/first_assert_neg.cc: New test.
1176         * testsuite/23_containers/span/first_neg.cc: New test.
1177         * testsuite/23_containers/span/front_assert_neg.cc: New test.
1178         * testsuite/23_containers/span/index_op_assert_neg.cc: New test.
1179         * testsuite/23_containers/span/last_2_assert_neg.cc: New test.
1180         * testsuite/23_containers/span/last_assert_neg.cc: New test.
1181         * testsuite/23_containers/span/subspan_2_assert_neg.cc: New test.
1182         * testsuite/23_containers/span/subspan_3_assert_neg.cc: New test.
1183         * testsuite/23_containers/span/subspan_4_assert_neg.cc: New test.
1184         * testsuite/23_containers/span/subspan_5_assert_neg.cc: New test.
1185         * testsuite/23_containers/span/subspan_6_assert_neg.cc: New test.
1186         * testsuite/23_containers/span/subspan_assert_neg.cc: New test.
1187
1188 2019-09-05  JeanHeyd Meneide  <phdofthehouse@gmail.com>
1189
1190         * include/Makefile.am: Add <span> header.
1191         * include/Makefile.in: Regenerate.
1192         * include/bits/range_access.h (__adl_begin, __adl_end, __adl_cbegin)
1193         (__adl_cend, __adl_rbegin, __adl_rend, __adl_crbegin, __adl_crend)
1194         (__adl_data, __adl_cdata, __adl_size, __adl_empty, __adl_to_address):
1195         New functions for performing argument-dependent lookup of range
1196         customization points.
1197         * include/bits/stl_iterator.h (__normal_iterator): Add
1198         _GLIBCXX20_CONSTEXPR to all functions.
1199         * include/std/span: New header.
1200         * include/std/version (__cpp_lib_span): Define feature test macro.
1201         * testsuite/23_containers/span/contiguous_range_neg.cc: New test.
1202         * testsuite/23_containers/span/everything.cc: New test.
1203         * testsuite/23_containers/span/get_neg.cc: New test.
1204         * testsuite/23_containers/span/last_neg.cc: New test.
1205         * testsuite/23_containers/span/subspan_neg.cc: New test.
1206         * testsuite/23_containers/span/tuple_element_dynamic_neg.cc: New test.
1207         * testsuite/23_containers/span/tuple_element_oob_neg.cc: New test.
1208         * testsuite/23_containers/span/tuple_size_neg.cc: New test.
1209
1210 2019-09-05  Jonathan Wakely  <jwakely@redhat.com>
1211
1212         * doc/xml/manual/allocator.xml: Remove URL for bibliography entry.
1213         * doc/html/*: Regenerate.
1214
1215 2019-09-04  Mike Crowe  <mac@mcrowe.com>
1216
1217         PR libstdc++/41861
1218         * acinclude.m4 (GLIBCXX_CHECK_PTHREAD_COND_CLOCKWAIT): Check for new
1219         pthread_cond_clockwait function.
1220         * configure.ac: Use GLIBCXX_CHECK_PTHREAD_COND_CLOCKWAIT.
1221         * configure: Regenerate.
1222         * config.h.in: Regenerate.
1223         * include/std/condition_variable: (condition_variable): Rename
1224         __steady_clock_t typedef and add system_clock. Change __clock_t to be
1225         a typedef for the preferred clock to convert arbitrary other clocks to.
1226         [_GLIBCXX_USE_PTHREAD_COND_CLOCKWAIT] (wait_until): Add a steady_clock
1227         overload.
1228         (wait_until): Change __clock_t overload to use system_clock.
1229         [_GLIBCXX_USE_PTHREAD_COND_CLOCKWAIT] (__wait_until_impl): Add
1230         steady_clock overload that calls pthread_cond_clockwait.
1231         (__wait_until_impl): Change __clock_t overload to use system_clock.
1232         (condition_variable_any) [_GLIBCXX_USE_PTHREAD_COND_CLOCKWAIT]: Use
1233         steady_clock for __clock_t if pthread_cond_clockwait is available.
1234
1235 2019-09-04  Mike Crowe  <mac@mcrowe.com>
1236
1237         * testsuite/30_threads/condition_variable/members/2.cc (test01):
1238         Parameterise so that test can be run against an arbitrary clock.
1239         (main): Test using std::chrono::steady_clock and a user-defined
1240         clock in addition to the previous std::chrono::system_clock.
1241         * testsuite/30_threads/condition_variable_any/members/2.cc: Likewise.
1242
1243 2019-09-03  Ulrich Weigand  <uweigand@de.ibm.com>
1244
1245         * crossconfig.m4: Remove references to spu.
1246         * configure: Regenerate.
1247         * doc/xml/manual/appendix_contributing.xml: Remove references
1248         to __ea as "badword" for spu.
1249         * doc/html/manual/source_code_style.html: Regenerate.
1250         * include/tr1/ell_integral.tcc (__ellint_rd): Do not attempt
1251         to avoid __ea (as "badword" for spu).
1252         (__ellint_rj): Likewise.
1253
1254 2019-09-03  Chung-Lin Tang  <cltang@codesourcery.com>
1255
1256         PR other/79543
1257         * acinclude.m4 (GLIBCXX_CHECK_LINKER_FEATURES): Fix GNU ld --version
1258         scanning to conform to the GNU Coding Standards.
1259         * configure: Regenerate.
1260
1261 2019-09-02  Jonathan Wakely  <jwakely@redhat.com>
1262
1263         * src/c++17/memory_resource.cc: Use __constinit keyword.
1264
1265 2019-09-02  Jonathan Wakely  <jwakely@redhat.com>
1266
1267         * doc/xml/manual/abi.xml: Document 9.x library versions.
1268         * doc/html/*: Regenerate.
1269
1270 2019-09-02  Jonathan Wakely  <jwakely@redhat.com>
1271
1272         * include/std/charconv (__detail::__to_chars_2_len): Use std::log2p1.
1273         (__detail::__to_chars_8_len): Remove.
1274         (__detail::__to_chars_8): Inline length calculation here.
1275         (__detail::__from_chars_binary): Use numeric_limits instead of
1276         CHAR_BIT.
1277
1278 2019-09-02  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
1279
1280         * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
1281         * config/abi/post/i386-solaris/amd64/baseline_symbols.txt: Likewise.
1282         * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
1283         * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
1284         Likewise.
1285
1286 2019-09-01  François Dumont  <fdumont@gcc.gnu.org>
1287
1288         * testsuite_files/util/testsuite_performance.h
1289         (resource_counter::start): Ignore unused malloc(0) result.
1290
1291 2019-09-01  Gerald Pfeifer  <gerald@pfeifer.com>
1292
1293         * doc/xml/manual/policy_data_structures_biblio.xml (COM: Component
1294         Model Object Technologies): Adjust name and link.
1295
1296 2019-08-30  Antony Polukhin  <antoshkka@gmail.com>
1297
1298         * include/std/charconv (__detail::__to_chars_8)
1299         __detail::__to_chars_16): Replace array of precomputed digits with
1300         arithmetic operations to avoid CPU cache misses. Remove zero
1301         termination from array of digits to allow symbol merge with generic
1302         implementation of __detail::__to_chars. Replace final offsets with
1303         constants. Use __detail::__to_chars_len_2 instead of a generic
1304         __detail::__to_chars_len.
1305         (__detail::__to_chars): Remove zero termination from array of digits.
1306         (__detail::__to_chars_2): Leading digit is always '1'.
1307
1308 2019-08-30  Jonathan Wakely  <jwakely@redhat.com>
1309
1310         * testsuite/23_containers/vector/cons/89164_c++17.cc: Fix errors.
1311
1312 2019-08-30  Uros Bizjak  <ubizjak@gmail.com>
1313
1314         * config/abi/post/alpha-linux-gnu/baseline_symbols.txt: Update.
1315
1316 2019-08-30  Jonathan Wakely  <jwakely@redhat.com>
1317
1318         PR libstdc++/89164
1319         * include/bits/stl_algobase.h (__copy_move): Give descriptive names
1320         to template parameters.
1321         * include/bits/stl_uninitialized.h (uninitialized_copy)
1322         (uninitialized_fill, uninitialized_fill_n): Add static assertions to
1323         diagnose invalid uses.
1324         * testsuite/20_util/specialized_algorithms/uninitialized_copy/1.cc:
1325         Adjust expected error.
1326         * testsuite/20_util/specialized_algorithms/uninitialized_copy/89164.cc:
1327         New test.
1328         * testsuite/20_util/specialized_algorithms/uninitialized_copy_n/
1329         89164.cc: New test.
1330         * testsuite/20_util/specialized_algorithms/uninitialized_fill/89164.cc:
1331         New test.
1332         * testsuite/20_util/specialized_algorithms/uninitialized_fill_n/
1333         89164.cc: New test.
1334         * testsuite/23_containers/vector/cons/89164.cc: New test.
1335         * testsuite/23_containers/vector/cons/89164_c++17.cc: New test.
1336
1337 2019-08-29  Jonathan Wakely  <jwakely@redhat.com>
1338
1339         PR libstdc++/91067
1340         * acinclude.m4 (libtool_VERSION): Bump to 6:28:0.
1341         * configure: Regenerate.
1342         * config/abi/pre/gnu.ver (GLIBCXX_3.4.28): Add new version. Export
1343         missing symbols.
1344         * testsuite/27_io/filesystem/iterators/91067.cc: Test move
1345         constructors.
1346         * testsuite/util/testsuite_abi.cc: Add new symbol version.
1347
1348 2019-08-29  Jakub Jelinek  <jakub@redhat.com>
1349
1350         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
1351         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
1352
1353 2019-08-28  Jonathan Wakely  <jwakely@redhat.com>
1354
1355         * config/abi/post/i386-linux-gnu/baseline_symbols.txt: Update.
1356         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
1357         * config/abi/post/powerpc-linux-gnu/baseline_symbols.txt: Update.
1358         * config/abi/post/powerpc64-linux-gnu/32/baseline_symbols.txt: Update.
1359         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
1360         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
1361         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
1362
1363 2019-08-23  Joseph Myers  <joseph@codesourcery.com>
1364
1365         * src/filesystem/ops-common.h [_GLIBCXX_FILESYSTEM_IS_WINDOWS]
1366         (std::filesystem::__gnu_posix::lstat): Add return type.
1367
1368 2019-08-20  Jonathan Wakely  <jwakely@redhat.com>
1369
1370         * doc/doxygen/user.cfg.in (INPUT): Remove profile mode headers.
1371
1372         * include/std/numeric (reduce): Fix Doxygen markup.
1373
1374         PR libstdc++/91371
1375         * include/std/type_traits (is_function): Simplify definition. Remove
1376         partial specializations for function types.
1377         (__is_referenceable): Simplify definition.
1378         * testsuite/20_util/bind/91371.cc: New test.
1379         * testsuite/20_util/is_function/91371.cc: New test.
1380         * testsuite/20_util/is_function/value.cc: Check more pointer types.
1381         * testsuite/20_util/is_member_function_pointer/91371.cc: New test.
1382         * testsuite/20_util/is_object/91371.cc: New test.
1383
1384 2019-08-16  Uros Bizjak  <ubizjak@gmail.com>
1385
1386         * config/abi/post/alpha-linux-gnu/baseline_symbols.txt: Update.
1387
1388 2019-08-15  Jonathan Wakely  <jwakely@redhat.com>
1389
1390         PR libstdc++/91456
1391         * include/bits/std_function.h (__check_func_return_type): Remove.
1392         (function::_Callable): Use std::__is_invocable_impl instead of
1393         __check_func_return_type.
1394         * include/std/type_traits (__is_invocable_impl): Add another defaulted
1395         template parameter. Define a separate partial specialization for
1396         INVOKE and INVOKE<void>. For INVOKE<R> replace is_convertible check
1397         with a check that models delayed temporary materialization.
1398         * testsuite/20_util/function/91456.cc: New test.
1399         * testsuite/20_util/is_invocable/91456.cc: New test.
1400
1401 2019-08-14  Jonathan Wakely  <jwakely@redhat.com>
1402
1403         * include/std/type_traits (__is_nullptr_t): Add deprecated attribute.
1404
1405 2019-08-14  Edward Smith-Rowland  <3dw4rd@verizon.net>
1406
1407         Implement C++20 p0879 - Constexpr for swap and swap related functions.
1408         * include/std/version (__cpp_lib_constexpr_swap_algorithms): New macro.
1409         * include/bits/algorithmfwd.h (__cpp_lib_constexpr_swap_algorithms):
1410         New macro.
1411         (iter_swap, make_heap, next_permutation, partial_sort_copy, pop_heap)
1412         (prev_permutation, push_heap, reverse, rotate, sort_heap, swap)
1413         (swap_ranges, nth_element, partial_sort, sort): Add constexpr.
1414         * include/bits/move.h (swap): Add constexpr.
1415         * include/bits/stl_algo.h (__move_median_to_first, __reverse, reverse)
1416         (__gcd, __rotate, rotate, __partition, __heap_select)
1417         (__partial_sort_copy, partial_sort_copy, __unguarded_partition)
1418         (__unguarded_partition_pivot, __partial_sort, __introsort_loop, __sort)
1419         (__introselect, __chunk_insertion_sort, next_permutation)
1420         (prev_permutation, partition, partial_sort, nth_element, sort)
1421         (__iter_swap::iter_swap, iter_swap, swap_ranges): Add constexpr.
1422         * include/bits/stl_algobase.h (__iter_swap::iter_swap, iter_swap)
1423         (swap_ranges): Add constexpr.
1424         * include/bits/stl_heap.h (__push_heap, push_heap, __adjust_heap,
1425         __pop_heap, pop_heap, __make_heap, make_heap, __sort_heap, sort_heap):
1426         Add constexpr.
1427         * include/std/type_traits (swap): Add constexpr.
1428         * testsuite/25_algorithms/headers/algorithm/synopsis.cc: Add constexpr.
1429         * testsuite/25_algorithms/iter_swap/constexpr.cc: New test.
1430         * testsuite/25_algorithms/make_heap/constexpr.cc: New test.
1431         * testsuite/25_algorithms/next_permutation/constexpr.cc: New test.
1432         * testsuite/25_algorithms/nth_element/constexpr.cc: New test.
1433         * testsuite/25_algorithms/partial_sort/constexpr.cc: New test.
1434         * testsuite/25_algorithms/partial_sort_copy/constexpr.cc: New test.
1435         * testsuite/25_algorithms/partition/constexpr.cc: New test.
1436         * testsuite/25_algorithms/pop_heap/constexpr.cc: New test.
1437         * testsuite/25_algorithms/prev_permutation/constexpr.cc: New test.
1438         * testsuite/25_algorithms/push_heap/constexpr.cc: New test.
1439         * testsuite/25_algorithms/reverse/constexpr.cc: New test.
1440         * testsuite/25_algorithms/rotate/constexpr.cc: New test.
1441         * testsuite/25_algorithms/sort/constexpr.cc: New test.
1442         * testsuite/25_algorithms/sort_heap/constexpr.cc: New test.
1443         * testsuite/25_algorithms/swap/constexpr.cc: New test.
1444         * testsuite/25_algorithms/swap_ranges/constexpr.cc: New test.
1445
1446 2019-08-12  Jonathan Wakely  <jwakely@redhat.com>
1447
1448         PR libstdc++/90361
1449         * src/c++17/string-inst.cc: Use _GLIBCXX_USE_CXX11_ABI=1 by default.
1450
1451         * include/std/tuple (__unpack_std_tuple): New variable template and
1452         partial specializations.
1453         (apply, make_from_tuple): Add noexcept-specifier.
1454         * testsuite/20_util/tuple/apply/2.cc: New test.
1455         * testsuite/20_util/tuple/make_from_tuple/2.cc: New test.
1456
1457 2019-08-09  Corentin Gay  <gay@adacore.com>
1458
1459         * testsuite/ext/random/beta_distribution/operators/serialize.cc,
1460         testsuite/ext/random/hypergeometric_distribution/operators/serialize.cc,
1461         testsuite/ext/random/normal_mv_distribution/operators/serialize.cc,
1462         testsuite/ext/random/triangular_distribution/operators/serialize.cc,
1463         testsuite/ext/random/von_mises_distribution/operators/serialize.cc:
1464         Add call to `VERIFY`.
1465
1466 2019-08-09  Alexandre Oliva <oliva@adacore.com>
1467
1468         * include/ext/random
1469         (normal_mv_distribution::param_type::param_type): New private
1470         ctor taking a decomposed varcov matrix, for use by...
1471         (operator>>): ... this, befriended.
1472         * include/ext/random.tcc (operator>>): Use it.
1473         (normal_mv_distribution::param_type::_M_init_lower): Adjust
1474         member function name in exception message.
1475
1476 2019-08-08  Jonathan Wakely  <jwakely@redhat.com>
1477
1478         P0325R4 to_array from LFTS with updates
1479         * include/experimental/array (to_array): Qualify call to __to_array.
1480         * include/std/array (__cpp_lib_to_array, to_array): Define for C++20.
1481         * include/std/version (__cpp_lib_to_array): Likewise.
1482         * testsuite/23_containers/array/creation/1.cc: New test.
1483         * testsuite/23_containers/array/creation/2.cc: New test.
1484         * testsuite/23_containers/array/creation/3_neg.cc: New test.
1485         * testsuite/23_containers/array/tuple_interface/tuple_element_neg.cc:
1486         Use zero for dg-error line number.
1487
1488 2019-08-06  Jonathan Wakely  <jwakely@redhat.com>
1489
1490         P1651R0 bind_front should not unwrap reference_wrapper
1491         * include/std/functional (bind_front): Don't unwrap reference_wrapper.
1492         * include/std/version (__cpp_lib_bind_front): Update value.
1493         * testsuite/20_util/function_objects/bind_front/1.cc: Fix test for
1494         feature test macro.
1495         * testsuite/20_util/function_objects/bind_front/2.cc: New test.
1496
1497         * include/std/numbers [!__STRICT_ANSI__ && _GLIBCXX_USE_FLOAT128]
1498         (e_v, log2e_v, log10e_v, pi_v, inv_pi_v, inv_sqrtpi_v, ln2_v, ln10_v)
1499         (sqrt2_v, sqrt3_v, inv_sqrt3, egamma_v, phi_v): Add explicit
1500         specializations for __float128.
1501         * testsuite/26_numerics/numbers/float128.cc: New test.
1502
1503 2019-08-04  Gerald Pfeifer  <gerald@pfeifer.com>
1504
1505         * doc/xml/manual/documentation_hacking.xml: doxygen.org is now
1506         doxygen.nl.
1507
1508 2019-08-01  Edward Smith-Rowland  <3dw4rd@verizon.net>
1509
1510         Implement C++20 p0202 - Add Constexpr Modifiers to Functions
1511         in <algorithm> and <utility> Headers.
1512         Implement C++20 p1023 - constexpr comparison operators for std::array.
1513         * include/bits/algorithmfwd.h (all_of, any_of, binary_search, copy,
1514         copy_backward, copy_if, copy_n, equal_range, fill, find_end,
1515         find_if_not, includes, is_heap, is_heap_until, is_partitioned,
1516         is_permutation, is_sorted, is_sorted_until, iter_swap, lower_bound,
1517         none_of, partition_copy, partition_point, remove, remove_if,
1518         remove_copy, remove_copy_if, replace_copy, replace_copy_if,
1519         reverse_copy, rotate_copy, uunique, upper_bound, adjacent_find, count,
1520         count_if, equal, find, find_first_of, find_if, for_each, generate,
1521         generate_n, lexicographical_compare, merge, mismatch, replace,
1522         replace_if, search, search_n, set_difference, set_intersection,
1523         set_symmetric_difference, set_union, transform, unique_copy):
1524         Mark constexpr.
1525         * include/bits/cpp_type_traits.h (__miter_base): Mark constexpr.
1526         * include/bits/predefined_ops.h (_Iter_less_val::operator(),
1527         _Val_less_iter::operator(), _Iter_equal_to_iter::operator(),
1528         _Iter_equal_to_val::operator(), _Iter_equals_val::operator()):
1529          Use const ref instead of ref arg;
1530         (_Iter_less_val, __iter_less_val, _Val_less_iter, __val_less_iter,
1531         __iter_equal_to_iter, __iter_equal_to_val, __iter_comp_val,
1532         _Iter_comp_val, _Val_comp_iter, __val_comp_iter, __iter_equals_val,
1533         _Iter_equals_iter, __iter_comp_iter, _Iter_pred, __pred_iter,
1534         _Iter_comp_to_val, __iter_comp_val, _Iter_comp_to_iter,
1535         __iter_comp_iter): Mark constexpr.
1536         * include/bits/stl_algo.h (__find_if, __find_if_not, __find_if_not_n,
1537         __search, __search_n_aux, __search_n, __find_end, find_end, all_of,
1538         none_of, any_of, find_if_not, is_partitioned, partition_point,
1539         __remove_copy_if, remove_copy, remove_copy_if, copy_if, __copy_n,
1540         copy_n, partition_copy, __remove_if, remove, remove_if, __adjacent_find,
1541         __unique, unique, __unique_copy, reverse_copy, rotate_copy,
1542         __unguarded_linear_insert, __insertion_sort, __unguarded_insertion_sort,
1543         __final_insertion_sort, lower_bound, __upper_bound, upper_bound,
1544         __equal_range, equal_range, binary_search, __includes, includes,
1545         __next_permutation, __prev_permutation, __replace_copy_if, replace_copy,
1546         replace_copy_if, __count_if, is_sorted, __is_sorted_until,
1547         is_sorted_until, __is_permutation, is_permutation, for_each, find,
1548         find_if, find_first_of, adjacent_find, count, count_if, search,
1549         search_n, transform, replace, replace_if, generate, generate_n,
1550         unique_copy, __merge, merge, __set_union, set_union, __set_intersection,
1551         set_intersection, __set_difference, set_difference,
1552         __set_symmetric_difference, set_symmetric_difference):  Mark constexpr.
1553         * include/bits/stl_algobase.h (__memmove, __memcmp): New maybe constexpr
1554         wrappers around __builtin_memmove and __builtin_memcmp
1555         respectively;
1556         (__niter_base, __niter_wrap, __copy_m, __copy_move_a, __copy_move_a2,
1557         copy, move, __copy_move_b, __copy_move_backward_a,
1558         __copy_move_backward_a2, copy_backward, move_backward, __fill_a, fill,
1559         __fill_n_a, fill_n, equal, __lc_rai::__newlast1, __lc_rai::__cnd2,
1560         __lexicographical_compare_impl, __lexicographical_compare,
1561         __lexicographical_compare<true>::__lc, __lexicographical_compare_aux,
1562         __lower_bound, lower_bound, equal, __equal4, lexicographical_compare,
1563         __mismatch, mismatch, __is_heap_until, __is_heap, is_heap_until,
1564         is_heap): Mark constexpr.
1565         * include/bits/stl_heap.h (__is_heap_until, __is_heap, is_heap_until,
1566         is_heap): Mark constexpr.
1567         * include/bits/stl_iterator.h (__niter_base, __miter_base): Mark constexpr.
1568         * include/std/array: Make comparison ops constexpr.
1569         * include/std/utility: Make exchange constexpr.
1570         * include/std/version (__cpp_lib_constexpr_algorithms): New macro.
1571         * testsuite/23_containers/array/tuple_interface/get_neg.cc: Adjust.
1572         * testsuite/23_containers/array/tuple_interface/
1573         tuple_element_neg.cc: Adjust.
1574         * testsuite/20_util/exchange/constexpr.cc: New.
1575         * testsuite/23_containers/array/comparison_operators/constexpr.cc: New.
1576         * testsuite/25_algorithms/constexpr_macro.cc: New.
1577         * testsuite/25_algorithms/adjacent_find/constexpr.cc: New.
1578         * testsuite/25_algorithms/all_of/constexpr.cc: New.
1579         * testsuite/25_algorithms/any_of/constexpr.cc: New.
1580         * testsuite/25_algorithms/binary_search/constexpr.cc: New.
1581         * testsuite/25_algorithms/copy/constexpr.cc: New.
1582         * testsuite/25_algorithms/copy_backward/constexpr.cc: New.
1583         * testsuite/25_algorithms/copy_if/constexpr.cc: New.
1584         * testsuite/25_algorithms/copy_n/constexpr.cc: New.
1585         * testsuite/25_algorithms/count/constexpr.cc: New.
1586         * testsuite/25_algorithms/count_if/constexpr.cc: New.
1587         * testsuite/25_algorithms/equal/constexpr.cc: New.
1588         * testsuite/25_algorithms/equal_range/constexpr.cc: New.
1589         * testsuite/25_algorithms/fill/constexpr.cc: New.
1590         * testsuite/25_algorithms/fill_n/constexpr.cc: New.
1591         * testsuite/25_algorithms/find/constexpr.cc: New.
1592         * testsuite/25_algorithms/find_end/constexpr.cc: New.
1593         * testsuite/25_algorithms/find_first_of/constexpr.cc: New.
1594         * testsuite/25_algorithms/find_if/constexpr.cc: New.
1595         * testsuite/25_algorithms/find_if_not/constexpr.cc: New.
1596         * testsuite/25_algorithms/for_each/constexpr.cc: New.
1597         * testsuite/25_algorithms/generate/constexpr.cc: New.
1598         * testsuite/25_algorithms/generate_n/constexpr.cc: New.
1599         * testsuite/25_algorithms/is_heap/constexpr.cc: New.
1600         * testsuite/25_algorithms/is_heap_until/constexpr.cc: New.
1601         * testsuite/25_algorithms/is_partitioned/constexpr.cc: New.
1602         * testsuite/25_algorithms/is_permutation/constexpr.cc: New.
1603         * testsuite/25_algorithms/is_sorted/constexpr.cc: New.
1604         * testsuite/25_algorithms/is_sorted_until/constexpr.cc: New.
1605         * testsuite/25_algorithms/lexicographical_compare/constexpr.cc: New.
1606         * testsuite/25_algorithms/lower_bound/constexpr.cc: New.
1607         * testsuite/25_algorithms/merge/constexpr.cc: New.
1608         * testsuite/25_algorithms/mismatch/constexpr.cc: New.
1609         * testsuite/25_algorithms/none_of/constexpr.cc: New.
1610         * testsuite/25_algorithms/partition_copy/constexpr.cc: New.
1611         * testsuite/25_algorithms/partition_point/constexpr.cc: New.
1612         * testsuite/25_algorithms/remove/constexpr.cc: New.
1613         * testsuite/25_algorithms/remove_copy/constexpr.cc: New.
1614         * testsuite/25_algorithms/remove_copy_if/constexpr.cc: New.
1615         * testsuite/25_algorithms/remove_if/constexpr.cc: New.
1616         * testsuite/25_algorithms/replace_copy/constexpr.cc: New.
1617         * testsuite/25_algorithms/replace_copy_if/constexpr.cc: New.
1618         * testsuite/25_algorithms/replace_if/constexpr.cc: New.
1619         * testsuite/25_algorithms/reverse_copy/constexpr.cc: New.
1620         * testsuite/25_algorithms/rotate_copy/constexpr.cc: New.
1621         * testsuite/25_algorithms/search/constexpr.cc: New.
1622         * testsuite/25_algorithms/search_n/constexpr.cc: New.
1623         * testsuite/25_algorithms/set_difference/constexpr.cc: New.
1624         * testsuite/25_algorithms/set_intersection/constexpr.cc: New.
1625         * testsuite/25_algorithms/set_symmetric_difference/constexpr.cc: New.
1626         * testsuite/25_algorithms/set_union/constexpr.cc: New.
1627         * testsuite/25_algorithms/transform/constexpr.cc: New.
1628         * testsuite/25_algorithms/unique/constexpr.cc: New.
1629         * testsuite/25_algorithms/unique_copy/constexpr.cc: New.
1630         * testsuite/25_algorithms/upper_bound/constexpr.cc: New.
1631
1632 2019-07-31  Jonathan Wakely  <jwakely@redhat.com>
1633
1634         * include/std/memory (make_obj_using_allocator): Qualify call to
1635         uses_allocator_construction_args.
1636
1637         P0631R4 Math Constants
1638         * include/Makefile.am: Add new header.
1639         * include/Makefile.in: Regenerate.
1640         * include/precompiled/stdc++.h: Include new header.
1641         * include/std/numbers: New header.
1642         * include/std/version (__cpp_lib_math_constants): Define.
1643         * testsuite/26_numerics/numbers/1.cc: New test.
1644         * testsuite/26_numerics/numbers/2.cc: New test.
1645         * testsuite/26_numerics/numbers/3.cc: New test.
1646         * testsuite/26_numerics/numbers/nonfloat_neg.cc: New test.
1647
1648         * include/std/bit: Add Doxygen comments.
1649
1650         PR libstdc++/91308
1651         * include/bits/unique_ptr.h (unique_ptr::__safe_conversion_up): Remove
1652         constraints on deleter that should only apply to the constructor.
1653         (unique_ptr<T[], D>::__safe_conversion_up): Likewise.
1654         (unique_ptr<T[], D>::unique_ptr(unique_ptr<U, D>&&)): Restore
1655         constraints on deleter here.
1656         * testsuite/20_util/unique_ptr/assign/91308.cc: New test.
1657
1658 2019-07-29  Jonathan Wakely  <jwakely@redhat.com>
1659
1660         PR libstdc++/51333
1661         * libsupc++/cxxabi.h (__gnu_cxx::recursive_init_error): Do not define
1662         constructor inline.
1663         * libsupc++/guard_error.cc (__gnu_cxx::recursive_init_error): Define
1664         constructor.
1665         * testsuite/18_support/51333.cc: New test.
1666
1667 2019-07-28  Gerald Pfeifer  <gerald@pfeifer.com>
1668
1669         * doc/xml/manual/documentation_hacking.xml: Fix broken reference
1670         to the Doxygen manual. Avoid a "here" link on the way.
1671         Fix another broken link to Doxygen docblocks.
1672
1673 2019-07-26  Jonathan Wakely  <jwakely@redhat.com>
1674
1675         * include/std/bit (__cpp_lib_endian): Define.
1676         * include/std/version (__cpp_lib_endian): Define.
1677         * testsuite/26_numerics/endian/2.cc: New.
1678         * testsuite/26_numerics/endian/3.cc: New.
1679         * testsuite/26_numerics/endian/4.cc: New.
1680
1681 2019-07-26  François Dumont  <fdumont@gcc.gnu.org>
1682
1683         * testsuite/util/testsuite_iterators.h
1684         (bidirectional_iterator_wrapper): Fix type comment.
1685         (random_access_iterator_wrapper): Likewise.
1686
1687 2019-07-25  Jonathan Wakely  <jwakely@redhat.com>
1688
1689         * include/std/bit (endian): Move definition here as per P1612R1.
1690         * include/std/type_traits (endian): Remove definition from here.
1691         * testsuite/20_util/endian/1.cc: Rename to ...
1692         * testsuite/26_numerics/endian/1.cc: ... here. Adjust header.
1693
1694 2019-07-25  Martin Liska  <mliska@suse.cz>
1695             Dominik Infuhr  <dominik.infuehr@theobroma-systems.com>
1696
1697         PR c++/23383
1698         * testsuite/ext/bitmap_allocator/check_delete.cc: Add
1699         -fno-allocation-dce.
1700         * testsuite/ext/bitmap_allocator/check_new.cc: Likewise.
1701         * testsuite/ext/new_allocator/check_delete.cc: Likewise.
1702         * testsuite/ext/new_allocator/check_new.cc: Likewise.
1703
1704 2019-07-22  Jonathan Wakely  <jwakely@redhat.com>
1705
1706         * testsuite/26_numerics/bit/bitops.count/*: Rename to ...
1707         * testsuite/26_numerics/bit/bit.count/*: Here.
1708
1709         * include/std/bit (__rotl, __rotr): Change second parameter from
1710         unsigned int to int and handle negative values.
1711         (rotl, rotr): Remove check for __STRICT_ANSI__. Change second
1712         parameter from unsigned int to int. Add nodiscard attribute.
1713         * testsuite/26_numerics/bit/bitops.rot/rotl.cc: Rename to ...
1714         * testsuite/26_numerics/bit/bit.rotate/rotl.cc: Here. Test negative
1715         shifts.
1716         * testsuite/26_numerics/bit/bitops.rot/rotr.cc: Rename to ...
1717         * testsuite/26_numerics/bit/bit.rotate/rotr.cc: Here. Test negative
1718         shifts.
1719
1720         * include/std/bit (__ceil2): Make unrepresentable results undefined,
1721         as per P1355R2. Add debug assertion. Perform one left shift, not two,
1722         so that out of range values cause undefined behaviour. Ensure that
1723         shift will still be undefined if left operand is promoted.
1724         * testsuite/26_numerics/bit/bit.pow.two/ceil2.cc: Replace checks for
1725         unrepresentable values with checks that they are not core constant
1726         expressions.
1727         * testsuite/26_numerics/bit/bit.pow.two/ceil2_neg.cc: New test.
1728
1729 2019-07-19  François Dumont  <fdumont@gcc.gnu.org>
1730
1731         * include/bits/stl_tempbuf.h (__detail::__return_temporary_buffer): Fix
1732         sized deallocation size computation.
1733
1734 2019-07-19  Andreas Schwab  <schwab@linux-m68k.org>
1735
1736         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
1737
1738 2019-07-18  François Dumont  <fdumont@gcc.gnu.org>
1739
1740         * include/bits/stl_tempbuf.h (__detail::__return_temporary_buffer): New.
1741         (~_Temporary_buffer()): Use latter.
1742         (_Temporary_buffer(_FIterator, size_type)): Likewise.
1743
1744 2019-07-17  Andreas Schwab  <schwab@suse.de>
1745
1746         * config/abi/post/ia64-linux-gnu/baseline_symbols.txt: Update.
1747
1748 2019-07-16  Jason Merrill  <jason@redhat.com>
1749
1750         * include/std/memory (uses_allocator_construction_args): Add parens
1751         around constraint.
1752
1753 2019-07-12  Jonathan Wakely  <jwakely@redhat.com>
1754
1755         * testsuite/29_atomics/atomic_float/1.cc: Fix comment.
1756
1757         * include/experimental/string_view (__detail::__idt): Remove.
1758         (operator==, operator!=, operator<, operator>, operator<=, operator>=):
1759         Use __type_identity_t instead of __detail::__idt;
1760         * include/std/string_view (__detail::__idt): Remove.
1761         (operator==, operator!=, operator<, operator>, operator<=, operator>=):
1762         Use __type_identity_t instead of __detail::__idt;
1763         * include/std/type_traits (__type_identity_t): New alias template.
1764
1765         * doc/xml/manual/status_cxx2020.xml: Update status for atomic_ref
1766         and floating point atomics.
1767
1768 2019-07-11  Jonathan Wakely  <jwakely@redhat.com>
1769
1770         * doc/xml/manual/configure.xml: Improve documentation of
1771         --enable-libstdcxx-time option.
1772
1773         * include/bits/atomic_base.h (__atomic_impl): New namespace for
1774         wrappers around atomic built-ins.
1775         (__atomic_float, __atomic_ref): New class templates for use as base
1776         classes.
1777         * include/std/atomic (atomic<float>, atomic<double>)
1778         (atomic<long double>): New explicit specializations.
1779         (atomic_ref): New class template.
1780         (__cpp_lib_atomic_ref): Define.
1781         * include/std/version (__cpp_lib_atomic_ref): Define.
1782         * testsuite/29_atomics/atomic/60695.cc: Adjust dg-error.
1783         * testsuite/29_atomics/atomic_float/1.cc: New test.
1784         * testsuite/29_atomics/atomic_float/requirements.cc: New test.
1785         * testsuite/29_atomics/atomic_ref/deduction.cc: New test.
1786         * testsuite/29_atomics/atomic_ref/float.cc: New test.
1787         * testsuite/29_atomics/atomic_ref/generic.cc: New test.
1788         * testsuite/29_atomics/atomic_ref/integral.cc: New test.
1789         * testsuite/29_atomics/atomic_ref/pointer.cc: New test.
1790         * testsuite/29_atomics/atomic_ref/requirements.cc: New test.
1791
1792 2019-07-06  Jonathan Wakely  <jwakely@redhat.com>
1793
1794         * include/ext/atomicity.h (__exchange_and_add, __atomic_add): Replace
1795         throw() with _GLIBCXX_NOTHROW.
1796         (__atomic_add_dispatch): Return after performing atomic increment.
1797
1798 2019-07-05  Jonathan Wakely  <jwakely@redhat.com>
1799
1800         * include/ext/atomicity.h [_GLIBCXX_ATOMIC_BUILTINS] (__atomic_add)
1801         (__exchange_and_add): Replace static specifier with always_inline
1802         attribute.
1803         (__exchange_and_add_single, __atomic_add_single): Likewise.
1804         (__exchange_and_add_dispatch, __atomic_add_dispatch): Likewise. Also
1805         combine !__gthread_active_p() and !__GTHREADS branches.
1806
1807 2019-07-03  Jonathan Wakely  <jwakely@redhat.com>
1808
1809         PR libstdc++/91067
1810         * acinclude.m4 (libtool_VERSION): Bump to 6:27:0.
1811         * configure: Regenerate.
1812         * config/abi/pre/gnu.ver (GLIBCXX_3.4.27): Add new version. Export
1813         missing symbols.
1814         * testsuite/27_io/filesystem/iterators/91067.cc: New test.
1815         * testsuite/util/testsuite_abi.cc: Add new symbol version.
1816
1817 2019-07-02  Jonathan Wakely  <jwakely@redhat.com>
1818
1819         * include/bits/c++config (_GLIBCXX_HAVE_BUILTIN_LAUNDER)
1820         (_GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED): Use __has_builtin
1821         instead of __is_identifier to detect Clang support.
1822
1823 2019-07-02  Jim Wilson  <jimw@sifive.com>
1824
1825         * configure.ac (BUILD_PDF): Also test for doxygen, dot, xsltproc,
1826         and xmllint.
1827         * configure: Regenerate.
1828
1829 2019-06-27  Jonathan Wakely  <jwakely@redhat.com>
1830
1831         PR libstdc++/91012
1832         * src/c++17/fs_path.cc (filesystem_error::_Impl): Use a string_view
1833         for the what_arg parameters.
1834         (filesystem_error::filesystem_error): Pass system_error::what() to
1835         the _Impl constructor.
1836         * testsuite/27_io/filesystem/filesystem_error/cons.cc: Ensure that
1837         filesystem_error::what() contains system_error::what().
1838
1839 2019-06-26  Jonathan Wakely  <jwakely@redhat.com>
1840
1841         * include/std/charconv (chars_format): Define bitmask type.
1842         * testsuite/20_util/to_chars/chars_format.cc: New test.
1843
1844         * include/bits/fs_path.h (path::__is_encoded_char): Use __is_one_of.
1845         * include/std/bit (_If_is_unsigned_integer_type): Remove.
1846         (_If_is_unsigned_integer): Use __is_unsigned_integer.
1847         (rotl(byte, unsigned), rotr(byte, unsigned), countl_zero(byte))
1848         (countl_one(byte), countr_zero(byte), countr_one(byte))
1849         (popcount(byte), ispow2(byte), ceil2(byte), floor2(byte))
1850         (log2p1(byte)): Remove.
1851         * include/std/charconv (__detail::__is_one_of): Move to <type_traits>.
1852         (__detail::__is_int_to_chars_type): Remove.
1853         (__detail::__integer_to_chars_result_type): Use __is_signed_integer
1854         and __is_unsigned_integer.
1855         * include/std/type_traits (__is_one_of): Move here from <charconv>.
1856         (__is_signed_integer, __is_unsigned_integer): New helpers.
1857         * testsuite/26_numerics/bit/bit.pow.two/ceil2.cc: Remove test for
1858         std::byte overload.
1859         * testsuite/26_numerics/bit/bit.pow.two/floor2.cc: Likewise.
1860         * testsuite/26_numerics/bit/bit.pow.two/ispow2.cc: Likewise.
1861         * testsuite/26_numerics/bit/bit.pow.two/log2p1.cc: Likewise.
1862         * testsuite/26_numerics/bit/bitops.count/countl_one.cc: Likewise.
1863         * testsuite/26_numerics/bit/bitops.count/countl_zero.cc: Likewise.
1864         * testsuite/26_numerics/bit/bitops.count/countr_one.cc: Likewise.
1865         * testsuite/26_numerics/bit/bitops.count/countr_zero.cc: Likewise.
1866         * testsuite/26_numerics/bit/bitops.count/popcount.cc: Likewise.
1867         * testsuite/26_numerics/bit/bitops.rot/rotl.cc: Likewise.
1868         * testsuite/26_numerics/bit/bitops.rot/rotr.cc: Likewise.
1869
1870 2019-06-25  Jonathan Wakely  <jwakely@redhat.com>
1871
1872         * include/std/numeric (midpoint(T, T)): Avoid std::abs in constexpr
1873         function.
1874
1875 2019-06-25  Jakub Jelinek  <jakub@redhat.com>
1876
1877         * include/pstl/pstl_config.h (_PSTL_PRAGMA_SIMD_SCAN,
1878         _PSTL_PRAGMA_SIMD_INCLUSIVE_SCAN, _PSTL_PRAGMA_SIMD_EXCLUSIVE_SCAN):
1879         Define to OpenMP 5.0 pragmas even for GCC 10.0+.
1880         (_PSTL_UDS_PRESENT): Define to 1 for GCC 10.0+.
1881
1882 2019-06-24  Jonathan Wakely  <jwakely@redhat.com>
1883
1884         * include/std/numeric (midpoint(T, T)): Change implementation for
1885         floating-point types to avoid incorrect rounding of denormals.
1886         * testsuite/26_numerics/midpoint/floating.cc: Add check for correct
1887         rounding with denormals.
1888         * testsuite/26_numerics/gcd/gcd_neg.cc: Adjust dg-error line numbers.
1889         * testsuite/26_numerics/lcm/lcm_neg.cc: Likewise.
1890
1891         * testsuite/18_support/headers/cfloat/values_c++17.cc: New test.
1892
1893 2019-06-20  Jonathan Wakely  <jwakely@redhat.com>
1894
1895         * acinclude.m4 (GLIBCXX_ENABLE_DEBUG): Only do debug build for final
1896         stage of bootstrap.
1897         * configure: Regenerate.
1898
1899         * include/std/variant (_Variant_storage, _Extra_visit_slot_needed):
1900         Qualify calls to __never_valueless.
1901
1902         * doc/xml/manual/status_cxx2017.xml: Fix outdated reference to
1903         C++17 working draft.
1904
1905         * testsuite/libstdc++-prettyprinters/simple.cc: Use non-palindromic
1906         vector<bool> for test.
1907         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
1908
1909 2019-06-19  Jonathan Wakely  <jwakely@redhat.com>
1910
1911         * include/bits/stream_iterator.h (istream_iterator::_M_equal()): Make
1912         private.
1913         (istream_iterator::_M_read()): Do not check stream state before
1914         attempting extraction. Set stream pointer to null when extraction
1915         fails (P0738R2).
1916         (operator==(const istream_iterator&, const istream_iterator&)): Change
1917         to be a hidden friend of istream_iterator.
1918         (operator!=(const istream_iterator&, const istream_iterator&)):
1919         Likewise.
1920         (ostream_iterator::ostream_iterator()): Add default constructor.
1921         (ostream_iterator::ostream_iterator(ostream_type*, const C*)): Use
1922         addressof.
1923         * testsuite/24_iterators/istream_iterator/1.cc: New test.
1924         * testsuite/24_iterators/ostream_iterator/1.cc: New test.
1925         * testsuite/24_iterators/ostream_iterator/70766.cc: Also check
1926         constructor taking a string.
1927         * testsuite/24_iterators/ostream_iterator/requirements/constexpr.cc:
1928         New test.
1929
1930 2019-06-19  Michael Weghorn  <m.weghorn@posteo.de>
1931             Jonathan Wakely  <jwakely@redhat.com>
1932
1933         PR libstdc++/90945
1934         * python/libstdcxx/v6/printers.py (StdVectorPrinter._iterator): Use
1935         values of type bool for vector<bool> elements.
1936         * testsuite/libstdc++-prettyprinters/simple.cc: Test vector<bool>.
1937         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
1938
1939 2019-06-19  Jonathan Wakely  <jwakely@redhat.com>
1940
1941         PR libstdc++/90920 partially revert r263433
1942         * include/bits/stl_algo.h (__rotate): Restore checks for empty ranges.
1943         (rotate): Remove checks.
1944         * testsuite/25_algorithms/rotate/90920.cc: New test.
1945
1946         * include/std/numeric (reduce(Iter, Iter, T, BinOp)): Fix value
1947         category used in invocable check.
1948         (reduce(Iter, Iter, T)): Pass initial value as rvalue.
1949         * testsuite/26_numerics/reduce/2.cc: New test.
1950
1951 2019-06-18  Jonathan Wakely  <jwakely@redhat.com>
1952
1953         * include/bits/algorithmfwd.h: Change title of doc group.
1954         * include/bits/stl_algo.h (for_each_n): Add new C++17 algorithm from
1955         P0024R2.
1956         * include/bits/stl_numeric.h: Define doc group and add algos to it.
1957         * include/std/numeric (__is_random_access_iter): New internal trait.
1958         (reduce, transform_reduce, exclusive_scan, inclusive_scan)
1959         (transform_exclusive_scan, transform_inclusive_scan): Likewise.
1960         * testsuite/25_algorithms/for_each/for_each_n.cc: New test.
1961         * testsuite/26_numerics/exclusive_scan/1.cc: New test.
1962         * testsuite/26_numerics/inclusive_scan/1.cc: New test.
1963         * testsuite/26_numerics/reduce/1.cc: New test.
1964         * testsuite/26_numerics/transform_exclusive_scan/1.cc: New test.
1965         * testsuite/26_numerics/transform_inclusive_scan/1.cc: New test.
1966         * testsuite/26_numerics/transform_reduce/1.cc: New test.
1967         * testsuite/util/testsuite_iterators.h (test_container::size()): New
1968         member function.
1969
1970         * include/c_global/cstddef (std::byte): Perform arithmetic operations
1971         in unsigned int to avoid promotion (LWG 2950).
1972
1973 2019-06-17  Jonathan Wakely  <jwakely@redhat.com>
1974
1975         * testsuite/20_util/allocator/1.cc: Add sized delete, which fixes a
1976         failure on AIX.
1977
1978         * include/c_global/cmath (__lerp, lerp): Add noexcept (LWG 3201).
1979
1980         PR libstdc++/90281 Fix string conversions for filesystem::path
1981         * include/bits/fs_path.h (u8path) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]:
1982         Use codecvt_utf8_utf16 instead of codecvt_utf8. Use
1983         __str_codecvt_in_all to fail for partial conversions and throw on
1984         error.
1985         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS && _GLIBCXX_USE_CHAR8_T]
1986         (path::_Cvt<char8_t>): Add explicit specialization.
1987         [_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_wconvert): Remove
1988         overloads.
1989         [_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_convert): Use
1990         if-constexpr instead of dispatching to _S_wconvert. Use codecvt
1991         instead of codecvt_utf8. Use __str_codecvt_in_all and
1992         __str_codecvt_out_all.
1993         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_convert): Use
1994         codecvt instead of codecvt_utf8. Use __str_codecvt_out_all.
1995         (path::_S_str_convert) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
1996         codecvt_utf8_utf16 instead of codecvt_utf8. Construct return values
1997         with allocator. Use __str_codecvt_out_all. Fallthrough to POSIX code
1998         after converting to UTF-8.
1999         (path::_S_str_convert): Use codecvt instead of codecvt_utf8. Use
2000         __str_codecvt_in_all.
2001         (path::string): Fix initialization of string types with different
2002         allocators.
2003         (path::u8string) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
2004         codecvt_utf8_utf16 instead of codecvt_utf8. Use __str_codecvt_out_all.
2005         * include/bits/locale_conv.h (__do_str_codecvt): Reorder static and
2006         runtime conditions.
2007         (__str_codecvt_out_all, __str_codecvt_in_all): New functions that
2008         return false for partial conversions.
2009         * include/experimental/bits/fs_path.h (u8path):
2010         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Implement correctly for mingw.
2011         [_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_wconvert): Add
2012         missing handling for char8_t. Use codecvt and codecvt_utf8_utf16
2013         instead of codecvt_utf8. Use __str_codecvt_in_all and
2014         __str_codecvt_out_all.
2015         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_convert): Use
2016         codecvt instead of codecvt_utf8. Use __str_codecvt_out_all.
2017         (path::string) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
2018         codecvt_utf8_utf16 instead of codecvt_utf8. Construct return values
2019         with allocator. Use __str_codecvt_out_all and __str_codecvt_in_all.
2020         (path::string) [!_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
2021         __str_codecvt_in_all.
2022         (path::u8string) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
2023         codecvt_utf8_utf16 instead of codecvt_utf8. Use __str_codecvt_out_all.
2024         * src/c++17/fs_path.cc (path::_S_convert_loc): Use
2025         __str_codecvt_in_all.
2026         * src/filesystem/path.cc (path::_S_convert_loc): Likewise.
2027         * testsuite/27_io/filesystem/path/construct/90281.cc: New test.
2028         * testsuite/27_io/filesystem/path/factory/u8path.cc: New test.
2029         * testsuite/27_io/filesystem/path/native/string.cc: Test with empty
2030         strings and with Unicode characters outside the basic multilingual
2031         plane.
2032         * testsuite/27_io/filesystem/path/native/alloc.cc: New test.
2033         * testsuite/experimental/filesystem/path/construct/90281.cc: New test.
2034         * testsuite/experimental/filesystem/path/factory/u8path.cc: New test.
2035         * testsuite/experimental/filesystem/path/native/alloc.cc: New test.
2036         * testsuite/experimental/filesystem/path/native/string.cc: Test with
2037         empty strings and with Unicode characters outside the basic
2038         multilingual plane.
2039
2040 2019-06-17  François Dumont  <fdumont@gcc.gnu.org>
2041             Jonathan Wakely  <jwakely@redhat.com>
2042
2043         * include/bits/hashtable.h (struct _Hashtable::_Scoped_node): New type.
2044         (_Hashtable::_M_insert_unique_node): Add key_type parameter. Don't
2045         deallocate node if insertion fails.
2046         (_Hashtable::_M_insert_multi_node): Likewise.
2047         (_Hashtable::_M_reinsert_node): Pass additional key argument.
2048         (_Hashtable::_M_reinsert_node_multi): Likewise. Remove FIXME.
2049         (_Hashtable::_M_extract_node(size_t, __node_base*)): New function.
2050         (_Hashtable::extract(const_iterator)): Use _M_extract_node.
2051         (_Hashtable::extract(const _Key&)): Likewise.
2052         (_Hashtable::_M_merge_unique): Pass additional key argument.
2053         (_Hashtable::_M_emplace<Args>(true_type, Args&&...)): Likewise. Use
2054         _Scoped_node.
2055         (_Hashtable::_M_insert): Likewise.
2056         * include/bits/hashtable_policy.h (_Map_base::operator[]): Likewise.
2057         (_Hashtable_alloc): Add comments to functions with misleading names.
2058
2059 2019-06-17  Jonathan Wakely  <jwakely@redhat.com>
2060
2061         * testsuite/20_util/bad_function_call/what.cc: Include <string> header
2062         for std::string.
2063         * testsuite/20_util/shared_ptr/cons/weak_ptr_expired.cc: Likewise.
2064         * testsuite/20_util/tuple/cons/allocator_with_any.cc: Include <memory>
2065         header for std::allocator.
2066         * testsuite/23_containers/array/tuple_interface/tuple_element.cc: Add
2067         using-declaration for std::size_t.
2068         * testsuite/23_containers/array/tuple_interface/tuple_size.cc:
2069         Likewise.
2070         * testsuite/23_containers/deque/cons/55977.cc: Include <istream> for
2071         std::istream.
2072         * testsuite/23_containers/vector/cons/55977.cc: Likewise.
2073         * testsuite/experimental/map/erasure.cc: Include <string> for
2074         std::string.
2075         * testsuite/experimental/unordered_map/erasure.cc: Likewise.
2076
2077 2019-06-14  Jonathan Wakely  <jwakely@redhat.com>
2078
2079         * include/experimental/type_traits (experimental::nonesuch): Use
2080         pragma to disable -Wctor-dtor-privacy warnings.
2081         * include/std/type_traits (__is_convertible_helper<From, To, false>)
2082         (__is_nt_convertible_helper<From, To, false>, __nonesuch): Likewise.
2083
2084         * include/std/version (__cpp_lib_bind_front): Add missing macro.
2085
2086 2019-06-12  Jonathan Wakely  <jwakely@redhat.com>
2087
2088         * include/std/algorithm (__cpp_lib_parallel_algorithm): Fix value.
2089         * include/std/memory (__cpp_lib_parallel_algorithm): Likewise.
2090         * include/std/numeric (__cpp_lib_parallel_algorithm): Likewise.
2091         * testsuite/25_algorithms/pstl/feature_test.cc: New test.
2092
2093         * include/std/variant (get<T>, get<N>, get_if<N>, get_if<T>)
2094         (variant::emplace): Change static_assert messages from "should be"
2095         to "must be".
2096         (hash<monostate>::operator()): Remove name of unused parameter.
2097
2098         * include/std/mutex (scoped_lock::~scoped_lock()): Use fold
2099         expression.
2100
2101         * include/Makefile.am: Add new <bits/charconv.h> header.
2102         * include/Makefile.in: Regenerate.
2103         * include/bits/basic_string.h (to_string(int), to_string(unsigned))
2104         (to_string(long), to_string(unsigned long), to_string(long long))
2105         (to_string(unsigned long long)): Rewrite to use __to_chars_10_impl.
2106         * include/bits/charconv.h: New header.
2107         (__detail::__to_chars_len): Move here from <charconv>.
2108         (__detail::__to_chars_10_impl): New function extracted from
2109         __detail::__to_chars_10.
2110         * include/std/charconv (__cpp_lib_to_chars): Add, but comment out.
2111         (__to_chars_unsigned_type): New class template that reuses
2112         __make_unsigned_selector_base::__select to pick a type.
2113         (__unsigned_least_t): Redefine as __to_chars_unsigned_type<T>::type.
2114         (__detail::__to_chars_len): Move to new header.
2115         (__detail::__to_chars_10): Add inline specifier. Move code doing the
2116         output to __detail::__to_chars_10_impl and call that.
2117         * include/std/version (__cpp_lib_to_chars): Add, but comment out.
2118         * testsuite/21_strings/basic_string/numeric_conversions/char/
2119         to_string.cc: Fix reference in comment. Remove unused variable.
2120         * testsuite/21_strings/basic_string/numeric_conversions/char/
2121         to_string_int.cc: New test.
2122
2123 2019-06-09  Edward Smith-Rowland  <3dw4rd@verizon.net>
2124
2125         Fix ConstexprIterator requirements tests - No constexpr algorithms!
2126         * testsuite/21_strings/basic_string_view/requirements/constexpr_iter.cc:
2127         Replace copy with hand-rolled loop.
2128         * testsuite/23_containers/array/requirements/constexpr_iter.cc:
2129         Ditto.
2130
2131 2019-06-08  Edward Smith-Rowland  <3dw4rd@verizon.net>
2132
2133         Test for C++20 p0858 - ConstexprIterator requirements.
2134         * testsuite/21_strings/basic_string_view/requirements/constexpr_iter.cc:
2135         New test.
2136         * testsuite/23_containers/array/requirements/constexpr_iter.cc:
2137         New test.
2138
2139 2019-06-07  Thomas Rodgers  <trodgers@redhat.com>
2140
2141         Rename PSTL macro's consistent with libstdc++ (and llvm upstream
2142         project) standards.
2143         * include/bits/c++config: Rename all macros of the form __PSTL* to
2144         _PSTL*.
2145         * include/std/algorithm: Likewise.
2146         * include/std/execution: Likewise.
2147         * include/std/numeric: Likewise.
2148         * include/std/memory: Likewise.
2149         * include/pstl/glue_memory_impl.h: Likewise.
2150         * include/pstl/numeric_impl.h: Likewise.
2151         * include/pstl/glue_memory_defs.h: Likewise.
2152         * include/pstl/execution_defs.h: Likewise.
2153         * include/pstl/utils.h: Likewise.
2154         * include/pstl/algorithm_fwd.h: Likewise.
2155         * include/pstl/unseq_backend_simd.h: Likewise.
2156         * include/pstl/glue_execution_defs.h: Likewise.
2157         * include/pstl/algorithm_impl.h: Likewise.
2158         * include/pstl/parallel_impl.h: Likewise.
2159         * include/pstl/memory_impl.h: Likewise.
2160         * include/pstl/glue_numeric_defs.h: Likewise.
2161         * include/pstl/parallel_backend_utils.h: Likewise.
2162         * include/pstl/glue_algorithm_defs.h: Likewise.
2163         * include/pstl/parallel_backend.h: Likewise.
2164         * include/pstl/glue_numeric_impl.h: Likewise.
2165         * include/pstl/parallel_backend_tbb.h: Likewise.
2166         * include/pstl/numeric_fwd.h: Likewise.
2167         * include/pstl/glue_algorithm_impl.h: Likewise.
2168         * include/pstl/execution_impl.h: Likewise.
2169         * include/pstl/pstl_config.h: Likewise.
2170         * testsuite/util/pstl/pstl_test_config.h: Likewise.
2171         * testsuite/util/pstl/test_utils.h: Likewise.
2172         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc:
2173         Likewise.
2174         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc:
2175         Likewise.
2176         * testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc:
2177         Likewise.
2178         * testsuite/26_numerics/pstl/numeric_ops/scan.cc: Likewise.
2179         * testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc: Likewise.
2180         * testsuite/26_numerics/pstl/numeric_ops/reduce.cc: Likewise.
2181         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc: Likewise.
2182         * testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc:
2183         Likewise.
2184         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc: Likewise.
2185         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc: Likewise.
2186         * testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc: Likewise.
2187         * testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc: Likewise.
2188         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc:
2189         Likewise.
2190         * testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc: Likewise.
2191         * testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc: Likewise.
2192         * testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc: Likewise.
2193         * testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc: Likewise.
2194         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc:
2195         Likewise.
2196         * testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: Likewise.
2197         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc: Likewise.
2198         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc:
2199         Likewise.
2200         * testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc:
2201         Likewise.
2202         * testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: Likewise.
2203         * testsuite/25_algorithms/pstl/alg_merge/merge.cc: Likewise.
2204         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc:
2205         Likewise.
2206         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc:
2207         Likewise.
2208         * testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc:
2209         Likewise.
2210         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc:
2211         Likewise.
2212         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc:
2213         Likewise.
2214         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc:
2215         Likewise.
2216         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc:
2217         Likewise.
2218         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc:
2219         Likewise.
2220         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc:
2221         Likewise.
2222         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc:
2223         Likewise.
2224         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc:
2225         Likewise.
2226         * testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc: Likewise.
2227
2228         Rename header guards to be consistent with upstream project's
2229         conventions.
2230         * include/pstl/glue_memory_impl.h: Rename all macros of the form
2231         _PSTL_(.*)_H to _PSTL_\U\1_H.
2232         * include/pstl/numeric_impl.h: Likewise.
2233         * include/pstl/glue_memory_defs.h: Likewise.
2234         * include/pstl/execution_defs.h: Likewise.
2235         * include/pstl/utils.h: Likewise.
2236         * include/pstl/algorithm_fwd.h: Likewise.
2237         * include/pstl/unseq_backend_simd.h: Likewise.
2238         * include/pstl/glue_execution_defs.h: Likewise.
2239         * include/pstl/algorithm_impl.h: Likewise.
2240         * include/pstl/parallel_impl.h: Likewise.
2241         * include/pstl/memory_impl.h: Likewise.
2242         * include/pstl/glue_numeric_defs.h: Likewise.
2243         * include/pstl/parallel_backend_utils.h: Likewise.
2244         * include/pstl/glue_algorithm_defs.h: Likewise.
2245         * include/pstl/parallel_backend.h: Likewise.
2246         * include/pstl/glue_numeric_impl.h: Likewise.
2247         * include/pstl/parallel_backend_tbb.h: Likewise.
2248         * include/pstl/numeric_fwd.h: Likewise.
2249         * include/pstl/glue_algorithm_impl.h: Likewise.
2250         * include/pstl/execution_impl.h: Likewise.
2251         * include/pstl/pstl_config.h: Likewise.
2252         * testsuite/util/pstl/pstl_test_config.h: Likewise.
2253
2254         Synchronize libstdc++ parallel algorithms with upstream
2255         project.
2256         * include/pstl/algorithm_fwd.h: Synchronize with
2257         upstream PSTL project.
2258         * include/pstl/algorithm_impl.h: Likewise.
2259         * include/pstl/execution_defs.h: Likewise.
2260         * include/pstl/execution_impl.h: Likewise.
2261         * include/pstl/glue_algorithm_impl.h: Likewise.
2262         * include/pstl/glue_execution_defs.h: Likewise.
2263         * include/pstl/numeric_fwd.h: Likewise.
2264         * include/pstl/numeric_impl.h: Likewise.
2265         * include/pstl/parallel_backend.h: Likewise.
2266         * include/pstl/pstl_config.h: Likewise.
2267         * include/pstl/unseq_backend_simd.h: Likewise.
2268         * include/pstl/parallel_backend_serial.h: New file.
2269         * include/Makefile.am (pstl_headers): Add
2270         parallel_backend_serial.h.
2271         * include/Makefile.in: Regenerate.
2272
2273         Clean up non-conforming names
2274         * include/pstl/algorithm_impl.h (__parallel_set_union_op):
2275         Uglfiy copy_range1 and copy_range2
2276         (__pattern_walk2_n): Rename local n to __n
2277         * include/pstl/parallel_backend_tbb.h (struct __binary_no_op):
2278         Rename parameter _T to _Tp.
2279
2280         Integrate non-TBB serial backend support
2281         * include/bits/c++config: Adjust TBB detection logic to select serial
2282         PSTL backend if no TBB present.
2283         * testsuite/utils/pstl/test_utils.h: Remove check for
2284         _PSTL_USE_PAR_POLICIES
2285
2286 2019-06-07  Jonathan Wakely  <jwakely@redhat.com>
2287
2288         * testsuite/24_iterators/container_access.cc: Move dg-options before
2289         dg-do directive so the target check uses the -std option.
2290
2291         PR libstdc++/90770
2292         * configure: Regenerate.
2293         * src/Makefile.am (stamp-debug): Also test for missing makefile.
2294         * src/Makefile.in: Regenerate.
2295
2296 2019-06-06  Jonathan Wakely  <jwakely@redhat.com>
2297
2298         * include/std/array: Do not include <stdexcept>.
2299         * include/std/optional: Include <exception> and
2300         <bits/exception_defines.h> instead of <stdexcept>.
2301         * testsuite/20_util/function_objects/searchers.cc: Include <cctype>
2302         for std::isalnum.
2303         * testsuite/20_util/tuple/cons/deduction.cc: Include <memory> for
2304         std::allocator.
2305         * testsuite/23_containers/map/erasure.cc: Include <string>.
2306         * testsuite/23_containers/unordered_map/erasure.cc: Likewise.
2307
2308         * testsuite/23_containers/deque/requirements/dr438/assign_neg.cc: Add
2309         dg-prune-output for different C++98 diagnostic.
2310         * testsuite/23_containers/deque/requirements/dr438/constructor_1_neg.cc:
2311         Likewise.
2312         * testsuite/23_containers/deque/requirements/dr438/constructor_2_neg.cc:
2313         Likewise.
2314         * testsuite/23_containers/deque/requirements/dr438/insert_neg.cc:
2315         Likewise.
2316         * testsuite/23_containers/list/requirements/dr438/assign_neg.cc:
2317         Likewise.
2318         * testsuite/23_containers/list/requirements/dr438/constructor_1_neg.cc:
2319         Likewise.
2320         * testsuite/23_containers/list/requirements/dr438/constructor_2_neg.cc:
2321         Likewise.
2322         * testsuite/23_containers/list/requirements/dr438/insert_neg.cc:
2323         Likewise.
2324         * testsuite/23_containers/vector/requirements/dr438/assign_neg.cc:
2325         Likewise.
2326         * testsuite/23_containers/vector/requirements/dr438/
2327         constructor_1_neg.cc: Likewise.
2328         * testsuite/23_containers/vector/requirements/dr438/
2329         constructor_2_neg.cc: Likewise.
2330         * testsuite/23_containers/vector/requirements/dr438/insert_neg.cc:
2331         Likewise.
2332         * testsuite/libstdc++-prettyprinters/compat.cc: Do not run for C++98.
2333
2334         * testsuite/23_containers/unordered_map/requirements/debug_container.cc:
2335         Do not test allocator rebinding extension for C++2a.
2336         * testsuite/23_containers/unordered_set/allocator/ext_ptr.cc: Change
2337         dg-do directive for C++17 and C++2a.
2338
2339         * testsuite/23_containers/deque/requirements/explicit_instantiation/
2340         1_c++0x.cc: Remove redundant test.
2341         * testsuite/23_containers/deque/requirements/explicit_instantiation/
2342         2.cc: Use target selector instead of preprocessor condition.
2343         * testsuite/23_containers/deque/requirements/explicit_instantiation/
2344         3.cc: Do not run test for C++2a.
2345         * testsuite/23_containers/forward_list/requirements/
2346         explicit_instantiation/3.cc: Likewise.
2347         * testsuite/23_containers/forward_list/requirements/
2348         explicit_instantiation/5.cc: Do not test allocator rebinding extension
2349         for C++2a.
2350         * testsuite/23_containers/list/requirements/explicit_instantiation/
2351         1_c++0x.cc: Remove redundant test.
2352         * testsuite/23_containers/list/requirements/explicit_instantiation/
2353         2.cc: Use target selector instead of preprocessor condition.
2354         * testsuite/23_containers/list/requirements/explicit_instantiation/
2355         3.cc: Do not run test for C++2a.
2356         * testsuite/23_containers/list/requirements/explicit_instantiation/
2357         5.cc: Do not test allocator rebinding extension for C++2a.
2358         * testsuite/23_containers/map/requirements/explicit_instantiation/
2359         1_c++0x.cc: Remove redundant test.
2360         * testsuite/23_containers/map/requirements/explicit_instantiation/
2361         2.cc: Adjust comment.
2362         * testsuite/23_containers/map/requirements/explicit_instantiation/
2363         3.cc: Do not run test for C++2a.
2364         * testsuite/23_containers/map/requirements/explicit_instantiation/
2365         5.cc: Do not test allocator rebinding extension for C++2a.
2366         * testsuite/23_containers/multimap/requirements/explicit_instantiation/
2367         1_c++0x.cc: Remove redundant test.
2368         * testsuite/23_containers/multimap/requirements/explicit_instantiation/
2369         3.cc: Do not run test for C++2a.
2370         * testsuite/23_containers/multimap/requirements/explicit_instantiation/
2371         5.cc: Do not test allocator rebinding extension for C++2a.
2372         * testsuite/23_containers/multiset/requirements/explicit_instantiation/
2373         3.cc: Do not run test for C++2a.
2374         * testsuite/23_containers/multiset/requirements/explicit_instantiation/
2375         5.cc: Do not test allocator rebinding extension for C++2a.
2376         * testsuite/23_containers/set/requirements/explicit_instantiation/3.cc:
2377         Do not run test for C++2a.
2378         * testsuite/23_containers/set/requirements/explicit_instantiation/
2379         1_c++0x.cc: Remove redundant test.
2380         * testsuite/23_containers/set/requirements/explicit_instantiation/5.cc:
2381         Do not test allocator rebinding extension for C++2a.
2382         * testsuite/23_containers/unordered_map/requirements/
2383         explicit_instantiation/3.cc: Likewise.
2384         * testsuite/23_containers/unordered_map/requirements/
2385         explicit_instantiation/5.cc: Do not test allocator rebinding extension
2386         for C++2a.
2387         * testsuite/23_containers/unordered_multimap/requirements/
2388         explicit_instantiation/3.cc: Do not run test for C++2a.
2389         * testsuite/23_containers/unordered_multimap/requirements/
2390         explicit_instantiation/5.cc: Do not test allocator rebinding extension
2391         for C++2a.
2392         * testsuite/23_containers/unordered_multiset/requirements/
2393         explicit_instantiation/3.cc: Do not run test for C++2a.
2394         * testsuite/23_containers/unordered_multiset/requirements/
2395         explicit_instantiation/5.cc: Do not test allocator rebinding extension
2396         for C++2a.
2397         * testsuite/23_containers/unordered_set/requirements/
2398         explicit_instantiation/3.cc: Do not run test for C++2a.
2399         * testsuite/23_containers/unordered_set/requirements/
2400         explicit_instantiation/5.cc: Do not test allocator rebinding extension
2401         for C++2a.
2402         * testsuite/23_containers/vector/ext_pointer/explicit_instantiation/
2403         2.cc: Remove redundant test.
2404         * testsuite/23_containers/vector/ext_pointer/explicit_instantiation/
2405         3.cc: Do not run test for C++2a.
2406         * testsuite/23_containers/vector/requirements/explicit_instantiation/
2407         3.cc: Likewise.
2408
2409         * include/std/type_traits (is_empty, is_polymorphic, is_final)
2410         (is_abstract, is_aggregate): Remove static_assert.
2411         * testsuite/20_util/is_abstract/incomplete_neg.cc: Check for error
2412         from builtin only.
2413         * testsuite/20_util/is_aggregate/incomplete_neg.cc: Likewise. Add
2414         missing -std=gnu++17 option.
2415         * testsuite/20_util/is_empty/incomplete_neg.cc: New test.
2416         * testsuite/20_util/is_final/incomplete_neg.cc: New test.
2417         * testsuite/20_util/is_polymorphic/incomplete_neg.cc: Check for error
2418         from builtin only.
2419
2420         * testsuite/18_support/set_terminate.cc: Do not run for C++98 mode.
2421         * testsuite/18_support/set_unexpected.cc: Likewise.
2422         * testsuite/20_util/is_nothrow_invocable/value.cc: Test converting to
2423         void.
2424         * testsuite/20_util/is_nothrow_invocable/value_ext.cc: Fix constexpr
2425         function to be valid in C++11.
2426         * testsuite/26_numerics/complex/proj.cc: Do not run for C++98 mode.
2427         * testsuite/experimental/names.cc: Do not run for C++98 mode. Do not
2428         include Library Fundamentals or Networking headers in C++11 mode.
2429         * testsuite/ext/char8_t/atomic-1.cc: Do not run for C++98 mode.
2430
2431         * include/std/tuple (_TC): Replace with _TupleConstraints.
2432         (_TupleConstraints): New helper for SFINAE constraints, with more
2433         expressive member functions to reduce duplication when used.
2434         (tuple::_TC2, tuple::_TMC, tuple::_TNTC): Remove.
2435         (tuple::_TCC): Replace dummy type parameter with bool non-type
2436         parameter that can be used to check the pack size.
2437         (tuple::_ImplicitDefaultCtor, tuple::_ExplicitDefaultCtor)
2438         (tuple::_ImplicitCtor, tuple::_ExplicitCtor): New alias templates for
2439         checking constraints in constructors.
2440         (tuple::__valid_args, tuple::_UseOtherCtor, tuple::__use_other_ctor):
2441         New SFINAE helpers.
2442         (tuple::tuple): Use new helpers to reduce repitition in constraints.
2443         (tuple::tuple(allocator_arg_t, const Alloc&)): Constrain.
2444         (tuple<T1, T2>::_TCC, tuple<T1, T2>::_ImplicitDefaultCtor)
2445         (tuple<T1, T2>::_ExplicitDefaultCtor, tuple<T1, T2>::_ImplicitCtor)
2446         (tuple<T1, T2>::_ExplicitCtor): New alias templates for checking
2447         constraints in constructors.
2448         (tuple::__is_alloc_arg()): New SFINAE helpers.
2449         (tuple<T1, T2>::tuple): Use new helpers to reduce repitition in
2450         constraints.
2451         (tuple<T1, T2>::tuple(allocator_arg_t, const Alloc&)): Constrain.
2452         * testsuite/20_util/tuple/cons/90700.cc: New test.
2453         * testsuite/20_util/tuple/cons/allocators.cc: Add default constructor
2454         to meet new constraint on allocator-extended default constructor.
2455
2456 2019-06-03  Jonathan Wakely  <jwakely@redhat.com>
2457
2458         * include/bits/stl_map.h (map): Disable static assert for C++98 mode.
2459         * include/bits/stl_multimap.h (multimap): Likewise.
2460
2461 2019-06-03  François Dumont  <fdumont@gcc.gnu.org>
2462
2463         Rename variables and cleanup comments.
2464         * include/bits/hashtable_policy.h
2465         * include/bits/hashtable.h
2466
2467 2019-06-03  Jonathan Wakely  <jwakely@redhat.com>
2468
2469         * doc/xml/manual/status_cxx2020.xml: Add missing row for P0920R2.
2470         Fix bgcolor for P0340R3.
2471         * doc/html/*: Regenerate.
2472
2473         PR libstdc++/90686
2474         * doc/xml/manual/status_cxx2014.xml: Document what's missing from
2475         <experimental/memory_resource>.
2476         * doc/xml/manual/status_cxx2020.xml: Document status of P1285R0,
2477         P0339R6, P0340R3, P1164R1 and P1357R1.
2478         * doc/html/*: Regenerate.
2479
2480         * doc/xml/manual/status_cxx2020.xml: Document P1463R1 status.
2481         * include/bits/forward_list.h [__cplusplus > 201703]: Enable
2482         allocator::value_type assertion for C++2a.
2483         * include/bits/hashtable.h: Likewise.
2484         * include/bits/stl_deque.h: Likewise.
2485         * include/bits/stl_list.h: Likewise.
2486         * include/bits/stl_map.h: Likewise.
2487         * include/bits/stl_multimap.h: Likewise.
2488         * include/bits/stl_multiset.h: Likewise.
2489         * include/bits/stl_set.h: Likewise.
2490         * include/bits/stl_vector.h: Likewise.
2491         * testsuite/23_containers/deque/48101-3_neg.cc: New test.
2492         * testsuite/23_containers/forward_list/48101-3_neg.cc: New test.
2493         * testsuite/23_containers/list/48101-3_neg.cc: New test.
2494         * testsuite/23_containers/map/48101-3_neg.cc: New test.
2495         * testsuite/23_containers/multimap/48101-3_neg.cc: New test.
2496         * testsuite/23_containers/multiset/48101-3_neg.cc: New test.
2497         * testsuite/23_containers/set/48101-3_neg.cc: New test.
2498         * testsuite/23_containers/unordered_map/48101-3_neg.cc: New test.
2499         * testsuite/23_containers/unordered_multimap/48101-3_neg.cc: New test.
2500         * testsuite/23_containers/unordered_multiset/48101-3_neg.cc: New test.
2501         * testsuite/23_containers/unordered_set/48101-3_neg.cc: New test.
2502         * testsuite/23_containers/vector/48101-3_neg.cc: New test.
2503
2504 2019-05-31  Gerald Pfeifer  <gerald@pfeifer.com>
2505
2506         * doc/xml/manual/allocator.xml: Move hoard.org back to http.
2507
2508 2019-05-31  Jonathan Wakely  <jwakely@redhat.com>
2509
2510         * include/std/tuple (tuple<>): Add noexcept to allocator-extended
2511         constructors.
2512         (tuple<T1, T2>::__nothrow_default_constructible()): New helper
2513         function.
2514         (tuple<T1, T2>::tuple(), explicit tuple<T1, T2>::tuple()): Use helper.
2515
2516 2019-05-31  Jonathan Wakely  <jwakely@redhat.com>
2517
2518         * src/c++98/bitmap_allocator.cc: Add using-declaration for size_t.
2519
2520         PR libstdc++/90682
2521         * libsupc++/eh_term_handler.cc: Include eh_term_handler.h to get
2522         definition of _GLIBCXX_DEFAULT_TERM_HANDLER.
2523         * libsupc++/eh_term_handler.h: New header defining
2524         _GLIBCXX_DEFAULT_TERM_HANDLER.
2525         * libsupc++/eh_terminate.cc: Include eh_term_handler.h.
2526         (set_terminate): Restore default handler when argument is null.
2527         (set_unexpected): Likewise.
2528         * testsuite/18_support/set_terminate.cc: New test.
2529         * testsuite/18_support/set_unexpected.cc: New test.
2530
2531         * include/backward/hashtable.h (size_t, ptrdiff_t)
2532         (forward_iterator_tag, input_iterator_tag, _Construct, _Destroy)
2533         (distance, vector, pair, __iterator_category): Remove
2534         using-declarations that add these names to namespace __gnu_cxx.
2535         * include/ext/bitmap_allocator.h (size_t, ptrdiff_t): Likewise.
2536         * include/ext/debug_allocator.h (size_t): Likewise.
2537         * include/ext/functional (size_t, unary_function, binary_function)
2538         (mem_fun1_t, const_mem_fun1_t, mem_fun1_ref_t, const_mem_fun1_ref_t):
2539         Likewise.
2540         * include/ext/malloc_allocator.h (size_t, ptrdiff_t): Likewise.
2541         * include/ext/memory (ptrdiff_t, pair, __iterator_category): Likewise.
2542         * include/ext/mt_allocator.h (size_t, ptrdiff_t): Likewise.
2543         * include/ext/new_allocator.h (size_t, ptrdiff_t): Likewise.
2544         * include/ext/numeric (iota): Fix outdated comment.
2545         * include/ext/pool_allocator.h (size_t, ptrdiff_t): Likewise.
2546         * include/ext/rb_tree (_Rb_tree, allocator): Likewise.
2547         * include/ext/rope (size_t, ptrdiff_t, allocator, _Destroy): Likewise.
2548         * include/ext/ropeimpl.h (size_t, printf, basic_ostream)
2549         (__throw_length_error, _Destroy, std::__uninitialized_fill_n_a):
2550         Likewise.
2551         * include/ext/slist (size_t, ptrdiff_t, _Construct, _Destroy)
2552         (allocator, __true_type, __false_type): Likewise.
2553
2554 2019-05-31  Antony Polukhin  <antoshkka@gmail.com>
2555
2556         PR libstdc++/71579
2557         * include/std/type_traits __type_identity, __is_complete_or_unbounded):
2558         New helpers for checking preconditions in traits.
2559         (is_trivial, is_trivially_copyable, is_standard_layout, is_pod)
2560         (is_literal_type, is_empty, is_polymorphic, is_final, is_abstract)
2561         (is_destructible, is_nothrow_destructible, is_constructible)
2562         (is_default_constructible, is_copy_constructible)
2563         (is_move_constructible, is_nothrow_default_constructible)
2564         (is_nothrow_constructible, is_nothrow_copy_constructible)
2565         (is_nothrow_move_constructible, is_copy_assignable, is_move_assignable)
2566         (is_nothrow_assignable, is_nothrow_copy_assignable)
2567         (is_nothrow_move_assignable, is_trivially_constructible)
2568         (is_trivially_copy_constructible, is_trivially_move_constructible)
2569         is_trivially_assignable, is_trivially_copy_assignable)
2570         (is_trivially_move_assignable, is_trivially_destructible)
2571         (alignment_of, is_swappable, is_nothrow_swappable, is_invocable)
2572         (is_invocable_r, is_nothrow_invocable)
2573         (has_unique_object_representations, is_aggregate): Add static_asserts
2574         to make sure that type traits are not misused with incomplete types.
2575         (__is_constructible_impl, __is_nothrow_default_constructible_impl)
2576         (__is_nothrow_constructible_impl, __is_nothrow_assignable_impl): New
2577         base characteristics without assertions that can be reused in other
2578         traits.
2579         * testsuite/20_util/is_complete_or_unbounded/memoization.cc: New test.
2580         * testsuite/20_util/is_complete_or_unbounded/memoization_neg.cc: New
2581         test.
2582         * testsuite/20_util/is_complete_or_unbounded/value.cc: New test.
2583         * testsuite/20_util/is_abstract/incomplete_neg.cc: New test.
2584         * testsuite/20_util/is_aggregate/incomplete_neg.cc: New test.
2585         * testsuite/20_util/is_class/value.cc: Check incomplete type.
2586         * testsuite/20_util/is_function/value.cc: Likewise.
2587         * testsuite/20_util/is_move_constructible/incomplete_neg.cc: New test.
2588         * testsuite/20_util/is_nothrow_move_assignable/incomplete_neg.cc: New
2589         test.
2590         * testsuite/20_util/is_polymorphic/incomplete_neg.cc: New test.
2591         * testsuite/20_util/is_reference/value.cc: Check incomplete types.
2592         * testsuite/20_util/is_unbounded_array/value.cc: Likewise.
2593         * testsuite/20_util/is_union/value.cc: Likewise.
2594         * testsuite/20_util/is_void/value.cc: Likewise.
2595         * testsuite/util/testsuite_tr1.h: Add incomplete union type.
2596
2597 2019-05-31  Jonathan Wakely  <jwakely@redhat.com>
2598
2599         * include/bits/random.h (random_device::_M_init(const char*, size_t)):
2600         Add new private member function.
2601         * src/c++11/cow-string-inst.cc (random_device::_M_init(const string&))
2602         (random_device::_M_init_pretr1(const string&)): Call new private
2603         member with string data.
2604         * src/c++11/random.cc (random_device::_M_init(const char*, size_t)):
2605         Define.
2606         * testsuite/26_numerics/random/random_device/cons/default-cow.cc: New
2607         test using COW strings.
2608         * testsuite/26_numerics/random/random_device/cons/default.cc: Generate
2609         a value from the device.
2610         * testsuite/26_numerics/random/random_device/cons/token.cc: Likewise.
2611         Fix typo in token string.
2612
2613 2019-05-30  Nina Dinka Ranns  <dinka.ranns@gmail.com>
2614
2615         LWG2788 basic_string spurious use of a default constructible allocator
2616         * include/bits/basic_string.tcc [_GLIBCXX_USE_CXX11_ABI]
2617         (basic_string::_M_replace_dispatch): Construct temporary string with
2618         the current allocator.
2619         * testsuite/21_strings/basic_string/allocator/char/lwg2788.cc: New.
2620         * testsuite/21_strings/basic_string/allocator/wchar_t/lwg2788.cc: New.
2621
2622 2019-05-30  Jonathan Wakely  <jwakely@redhat.com>
2623
2624         * doc/xml/manual/diagnostics.xml: Update list of headers that define
2625         exception classes.
2626         * doc/xml/manual/support.xml: Rewrite advice around NULL. Rewrite
2627         section about new/delete overloads. Improve section on verbose
2628         terminate handler.
2629         * doc/html/*: Regenerate.
2630
2631         * doc/xml/manual/status_cxx2020.xml: Add feature-test macro for
2632         P0811R3. Change status of P1353R0.
2633         * doc/html/*: Regenerate.
2634
2635         * doc/xml/manual/status_cxx2011.xml: Use <variablelist> for
2636         documentation of implementation-defined types for [thread.req.native].
2637         * doc/xml/manual/status_cxx2017.xml: Update documentation of
2638         implementation-defined strings for [variant.bad.access]. Fix typo in
2639         documentation of implementation-defined support for [fs.conform.9945].
2640         * doc/html/*: Regenerate.
2641
2642 2019-05-29  Jonathan Wakely  <jwakely@redhat.com>
2643
2644         PR libstdc++/85494
2645         * testsuite/26_numerics/random/random_device/cons/token.cc: Fix test
2646         that fails on mingw-w64.
2647
2648         PR libstdc++/88881
2649         * src/c++17/fs_ops.cc [_GLIBCXX_FILESYSTEM_IS_WINDOWS]
2650         (status(const path&, error_code&)): Use parent_path() to remove
2651         trailing slash.
2652         (symlink_status(const path&, error_code&)): Duplicate workaround for
2653         bug in _wstat for paths with trailing slash.
2654         * testsuite/27_io/filesystem/operations/remove_all.cc: Check path
2655         with trailing slash.
2656         * testsuite/27_io/filesystem/operations/status.cc: Likewise.
2657         * testsuite/27_io/filesystem/operations/symlink_status.cc: Likewise.
2658
2659         * src/c++17/fs_path.cc (path::parent_path()): Create whole path at
2660         once instead of building it iteratively.
2661
2662         * testsuite/util/testsuite_api.h: Remove names of unused parameters.
2663
2664         PR libstdc++/85494 use rdseed and rand_s in std::random_device
2665         * acinclude.m4 (GLIBCXX_CHECK_X86_RDSEED): Define macro to check if
2666         the assembler supports rdseed.
2667         * config.h.in: Regenerate.
2668         * configure: Regenerate.
2669         * configure.ac: Use GLIBCXX_CHECK_X86_RDSEED.
2670         * config/os/mingw32-w64/os_defines.h (_GLIBCXX_USE_CRT_RAND_S): Define.
2671         * doc/html/*: Regenerate.
2672         * doc/xml/manual/status_cxx2011.xml: Document new tokens.
2673         * include/bits/random.h (random_device::random_device()): Always call
2674         _M_init rather than _M_init_pretr1.
2675         (random_device::random_device(const string&)): Likewise.
2676         (random_device::operator()()): Always call _M_getval().
2677         (random_device::_M_file): Replace first member of union with an
2678         anonymous struct, with _M_file as its first member.
2679         * src/c++11/random.cc [_GLIBCXX_X86_RDRAND] (USE_RDRAND): Define.
2680         [_GLIBCXX_X86_RDSEED] (USE_RDSEED): Define.
2681         (USE_MT19937): Define if none of the above are defined.
2682         (USE_POSIX_FILE_IO): Define.
2683         (_M_strtoul): Remove.
2684         [USE_RDSEED] (__x86_rdseed): Define new function.
2685         [_GLIBCXX_USE_CRT_RAND_S] (__winxp_rand_s): Define new function.
2686         (random_device::_M_init(const string&)): Initialize new union members.
2687         Add support for "rdseed" and "rand_s" tokens. Decide what the
2688         "default" token does according to which USE_* macros are defined.
2689         [USE_POSIX_FILE_IO]: Store a file descriptor.
2690         [USE_MT19937]: Forward to _M_init_pretr1 instead.
2691         (random_device::_M_init_pretr1(const string&)) [USE_MT19937]: Inline
2692         code from _M_strtoul.
2693         [!USE_MT19937]: Call _M_init, transforming the old default token or
2694         numeric tokens to "default".
2695         (random_device::_M_fini()) [USE_POSIX_FILE_IO]: Use close not fclose.
2696         (random_device::_M_getval()): Use new union members to obtain a
2697         random number from the stored function pointer or file descriptor.
2698         [USE_MT19937]: Obtain a value from the mt19937 engine.
2699         (random_device::_M_getval_pretr1()): Call _M_getval().
2700         (random_device::_M_getentropy()) [USE_POSIX_FILE_IO]: Use _M_fd
2701         instead of fileno.
2702         [!USE_MT19937] (mersenne_twister): Do not instantiate when not needed.
2703         * testsuite/26_numerics/random/random_device/85494.cc: New test.
2704
2705 2019-05-28  Jonathan Wakely  <jwakely@redhat.com>
2706
2707         PR libstdc++/90634
2708         * include/experimental/bits/fs_path.h (path::path(path&&)): Only call
2709         _M_split_cmpts() for a path with multiple components.
2710         (path::_S_is_dir_sep()): Add missing 'static' keyword to function.
2711         * src/filesystem/path.cc (path::_M_split_cmpts()): Count number of
2712         components and reserve space in vector. Return early when there is
2713         only one component.
2714         * testsuite/27_io/filesystem/path/construct/90634.cc: New test.
2715         * testsuite/experimental/filesystem/path/construct/90634.cc: New test.
2716
2717         * testsuite/util/testsuite_fs.h (compare_paths): Use three-argument
2718         form of std::equals for C++11 compatibility.
2719
2720 2019-05-26  Gerald Pfeifer  <gerald@pfeifer.com>
2721
2722         * doc/xml/manual/appendix_contributing.xml: Update pointer to
2723         C++ standard at ansi.org.
2724
2725 2019-05-24  Jonathan Wakely  <jwakely@redhat.com>
2726
2727         * include/std/numeric (midpoint(T*, T*)): Fix incorrect result.
2728         * testsuite/26_numerics/midpoint/pointer.cc: Change "compile" test
2729         to "run".
2730
2731         * testsuite/20_util/shared_ptr/cons/alias-rval.cc: Fix test.
2732         * testsuite/20_util/shared_ptr/cons/alias.cc: Remove unused function.
2733
2734 2019-05-23  Jonathan Wakely  <jwakely@redhat.com>
2735
2736         * testsuite/20_util/function_objects/invoke/1.cc: Move C++17-specific
2737         tests to ...
2738         * testsuite/20_util/function_objects/invoke/3.cc: New test.
2739         * testsuite/23_containers/unordered_set/allocator/ext_ptr.cc: Change
2740         "compile" test to "run".
2741
2742         * doc/xml/manual/intro.xml: Document LWG DR 2996 change.
2743         * doc/html/*: Regenerate.
2744         * include/bits/shared_ptr.h (shared_ptr(shared_ptr&&, T*)): Add
2745         rvalue aliasing constructor.
2746         (static_pointer_cast, const_pointer, dynamic_pointer_cast)
2747         (reinterpret_pointer_cast): Add overloads taking rvalues.
2748         * include/bits/shared_ptr_base.h (__shared_ptr(__shared_ptr&&, T*)):
2749         Add rvalue aliasing constructor.
2750         * testsuite/20_util/shared_ptr/casts/1.cc: Change "compile" test to
2751         "run" and check return values as well as types.
2752         * testsuite/20_util/shared_ptr/casts/reinterpret.cc: Likewise.
2753         * testsuite/20_util/shared_ptr/casts/rval.cc: New test.
2754         * testsuite/20_util/shared_ptr/cons/alias-rval.cc: New test.
2755         * testsuite/20_util/shared_ptr/cons/alias.cc: Remove unused return
2756         values.
2757
2758         * doc/xml/manual/evolution.xml: Document LWG DR 2921 change.
2759         * doc/xml/manual/intro.xml: Likewise.
2760         * include/std/future (__create_task_state): Add default arguments
2761         to make providing an allocator optional.
2762         (packaged_task::packaged_task(F&&)): Call __create_task_state directly
2763         instead of delegating to another constructor.
2764         (packaged_task::packaged_task(allocator_arg_t, const A&, ...)): Do not
2765         define allocator-extended constructors for C++17 and later.
2766         * testsuite/30_threads/packaged_task/cons/alloc.cc: Only run test for
2767         C++11 and C++14.
2768         * testsuite/30_threads/packaged_task/cons/alloc2.cc: Likewise.
2769         * testsuite/30_threads/packaged_task/cons/alloc_min.cc: Likewise.
2770         * testsuite/30_threads/packaged_task/uses_allocator.cc: Likewise.
2771
2772 2019-05-23  Hans-Peter Nilsson  <hp@axis.com>
2773
2774         * testsuite/26_numerics/random/poisson_distribution/operators/values.cc:
2775         Don't run the libstdc++/83237 part on simulator targets.
2776
2777 2019-05-23  Jonathan Wakely  <jwakely@redhat.com>
2778
2779         * doc/xml/manual/status_cxx2017.xml: Add feature test macro for
2780         P0040R3.
2781         * doc/html/*: Regenerate.
2782
2783         * include/experimental/any (__any_caster): Use RTTI if comparing
2784         addresses fails, to support non-unique addresses in shared libraries.
2785         * include/std/any (__any_caster): Likewise.
2786
2787         PR libstdc++/90220
2788         * include/experimental/any (__any_caster): Constrain to only be
2789         callable for object types. Use remove_cv_t instead of decay_t.
2790         If the type decays or isn't copy constructible, compare the manager
2791         function to a dummy specialization.
2792         (__any_caster): Add overload constrained for non-object types.
2793         (any::_Manager_internal<_Op>): Add dummy specialization.
2794         * testsuite/experimental/any/misc/any_cast.cc: Test function types
2795         and array types.
2796
2797 2019-05-22  Jonathan Wakely  <jwakely@redhat.com>
2798
2799         PR libstdc++/90557
2800         * src/c++17/fs_path.cc (path::_List::operator=(const _List&)): Fix
2801         reversed arguments to uninitialized_copy_n.
2802         * testsuite/27_io/filesystem/path/assign/copy.cc: Check that source
2803         is unchanged by copy assignment.
2804         * testsuite/util/testsuite_fs.h (compare_paths): Use std::equal to
2805         compare path components.
2806
2807         PR libstdc++/77691
2808         * include/experimental/memory_resource: Add system header pragma and
2809         do not define anything unless compiled as C++14 or later.
2810         (__resource_adaptor_common::__guaranteed_alignment): Remove.
2811         (__resource_adaptor_imp::do_allocate): If the requested alignment
2812         is a fundamental alignment then either allocate directly from _M_alloc
2813         or call the new _M_allocate function.
2814         (__resource_adaptor_imp::do_deallocate): Likewise for deallocation.
2815         (__resource_adaptor_imp::_M_allocate): New function that uses a copy
2816         of the allocator rebound to a POD type with the specified alignment.
2817         (__resource_adaptor_imp::_M_deallocate): Likewise for deallocation.
2818         * testsuite/experimental/memory_resource/new_delete_resource.cc:
2819         Adjust expected allocation sizes.
2820         * testsuite/experimental/memory_resource/resource_adaptor.cc: Remove
2821         xfail for Solaris x86.
2822
2823 2019-05-21  Thomas Rodgers  <trodgers@redhat.com>
2824
2825         LWG 3062 - Unnecessary decay_t in is_execution_policy_v
2826         * include/pstl/execution_defs.h (__enable_if_execution_policy):
2827         Use std::__remove_cvref_t when building with GCC.
2828
2829 2019-05-21  Jonathan Wakely  <jwakely@redhat.com>
2830
2831         PR libstdc++/90252
2832         * testsuite/lib/libstdc++.exp (check_effective_target_tbb-backend):
2833         Use "additional_flags" to pass -ltbb to v3_target_compile command.
2834         Use check_v3_target_prop_cached to cache the result of the test.
2835
2836         * doc/xml/manual/shared_ptr.xml: Fix names of lock policy constants.
2837
2838 2019-05-20  Thomas Rodgers  <trodgers@redhat.com>
2839
2840         PR libstdc++/90252
2841         * testsuite/lib/libstdc++.exp (check_effective_target_tbb-backend):
2842         Changed v3_target_compile check from preprocess to executable.
2843         Added "-ltbb" to v3_target_compile flags.
2844
2845 2019-05-20  Thomas Rodgers  <trodgers@redhat.com>
2846
2847         * testsuite/lib/libstdc++.exp (check_effective_target_tbb-backend):
2848         Add check for Thread Building Blocks 2018 or later.
2849
2850 2019-05-20  Jonathan Wakely  <jwakely@redhat.com>
2851
2852         * testsuite/experimental/names.cc: Only include Networking TS headers
2853         on targets with the necessary Gthreads support.
2854
2855 2019-05-20  Marek Polacek  <polacek@redhat.com>
2856
2857         CWG 2094 - volatile scalars are trivially copyable.
2858         PR c++/85679
2859         * testsuite/20_util/is_trivially_copyable/value.cc: Change the expected
2860         result for volatile int.
2861
2862 2019-05-20  Jonathan Wakely  <jwakely@redhat.com>
2863
2864         * testsuite/17_intro/names.cc: Do not check 'ptr' on Solaris.
2865         * testsuite/experimental/names.cc: Include <experimental/filesystem>
2866         conditionally.
2867
2868         PR c++/90532 Ensure __is_constructible(T[]) is false
2869         * include/std/type_traits (__do_is_default_constructible_impl)
2870         (__is_default_constructible_atom, __is_default_constructible_safe):
2871         Remove.
2872         (is_default_constructible): Use is_constructible.
2873         * testsuite/20_util/is_constructible/value.cc: Check int[] case.
2874         * testsuite/20_util/is_default_constructible/value.cc: Likewise.
2875         * testsuite/20_util/is_trivially_constructible/value.cc: Likewise.
2876         * testsuite/20_util/is_trivially_default_constructible/value.cc:
2877         Likewise.
2878
2879 2019-05-20  Pádraig Brady  <pbrady@fb.com>
2880
2881         * libstdc++-v3/include/ext/new_allocator.h (deallocate): Pass the size
2882         to the deallocator with -fsized-deallocation.
2883
2884 2019-05-20  Jonathan Wakely  <jwakely@redhat.com>
2885
2886         * testsuite/experimental/memory_resource/new_delete_resource.cc: Fix
2887         test by passing correct alignment to deallocate function.
2888
2889 2019-05-18  Jonathan Wakely  <jwakely@redhat.com>
2890
2891         PR libstdc++/90520
2892         * python/libstdcxx/v6/printers.py (UniquePointerPrinter.__init__):
2893         Raise exception if unique_ptr tuple member has unknown structure.
2894         * python/libstdcxx/v6/xmethods.py (UniquePtrGetWorker.__call__):
2895         Adjust worker to support new __uniq_ptr_data base class. Do not
2896         assume field called _M_head_impl is the first tuple element.
2897
2898 2019-05-17  François Dumont  <fdumont@gcc.gnu.org>
2899
2900         * include/bits/stl_deque.h
2901         (_Deque_iterator<>::__ptr_to): Remove, use std::__ptr_rebind.
2902         (_Deque_base(_Deque_base&&, const allocator_type&)): New.
2903         (_Deque_base::_Deque_impl_data): New.
2904         (_Deque_base::_Deque_impl): Inherit latter.
2905         (_Deque_base::_Deque_impl::_M_swap_data): Move...
2906         (_Deque_base::_Deque_impl_data::_M_swap_data): ... here.
2907         (_Deque_base::_Deque_impl()): Add noexcept qualification.
2908         (_Deque_base::_Deque_impl(_Deque_impl&&, _Tp_alloc_type&&)): New.
2909         (_Deque_base::_Deque_impl::_M_get_Tp_allocator()): Remove static_cast.
2910         (deque<>::deque()): Default.
2911         (deque<>::deque(deque&&)): Default.
2912         (deque<>::deque(deque&&, const allocator_type&, false_type)): New.
2913         (deque<>::deque(deque&&, const allocator_type&, true_type)): New.
2914         (deque<>::deque(deque&&, const allocator_type&)): Delegate to latters.
2915         (deque<>::deque<_It>(_It, _It, const allocator_type&)): Use
2916         _M_range_initialize.
2917         (deque<>::assign<_It>(_It, _It)): Use _M_assign_aux.
2918         (deque<>::resize(size_type, const value_type&)): Share a single
2919         implementation.
2920         (deque<>::insert<_It>(const_iterator, _It, _It)): Use
2921         _M_range_insert_aux.
2922         [__cplusplus >= 201103L](_M_initialize_dispatch): Remove.
2923         [__cplusplus >= 201103L](_M_assign_dispatch): Remove.
2924         [__cplusplus >= 201103L](_M_insert_dispatch): Remove.
2925         * testsuite/23_containers/deque/allocator/default_init.cc: New.
2926
2927 2019-05-17  Jonathan Wakely  <jwakely@redhat.com>
2928
2929         PR libstdc++/90246
2930         * include/std/variant (holds_alternative, get, get_if): Improve
2931         static assertion messages.
2932         (bad_variant_access::bad_variant_access()): Change default message.
2933         (__throw_bad_variant_access(bool)): New overload.
2934         (get): Use new overload.
2935         (visit, visit<R>): Improve exception message.
2936
2937         * testsuite/20_util/variant/compile.cc: Fix narrowing test for ILP32
2938         targets. Add more cases from P0608R3.
2939         * testsuite/20_util/variant/run.cc: Add more cases from P0608R3.
2940
2941         * include/bits/random.h (seed_seq::param): Fix non-reserved name.
2942         * include/experimental/type_traits (is_detected_exact)
2943         (is_detected_exact_v): Likewise.
2944         * include/pstl/execution_defs.h (is_execution_policy)
2945         (is_execution_policy_v, __enable_if_execution_policy): Likewise.
2946         * include/pstl/execution_impl.h (__policy_traits): Likewise.
2947         * testsuite/17_intro/names.cc: Check for more non-reserved names.
2948         * testsuite/experimental/names.cc: New test.
2949
2950         PR libstdc++/85965
2951         * include/bits/hashtable.h (_Hashtable::~_Hashtable()): Remove static
2952         assertions from the destructor.
2953         * include/bits/hashtable_policy.h (_Hash_code_base::_M_hash_code):
2954         Move static_assert for hash function to here.
2955         (_Hash_table_base::_M_equals): Move static_assert for equality
2956         predicate to here.
2957         * include/bits/stl_tree.h (_Rb_tree::_S_value(_Const_Link_type)):
2958         Remove.
2959         (_Rb_tree::_S_key(_Const_Link_type)): Move assertions here. Access
2960         the value directly instead of calling _S_value.
2961         (_Rb_tree::_S_value(_Const_Base_ptr)): Remove.
2962         (_Rb_tree::_S_key(_Const_Base_ptr)): Do downcast and forward to
2963         _S_key(_Const_Link_type).
2964         * testsuite/23_containers/set/85965.cc: Check construction,
2965         destruction, assignment and size() do not trigger the assertions.
2966         * testsuite/23_containers/unordered_set/85965.cc: Likewise.
2967         * testsuite/23_containers/map/48101_neg.cc: Call find and adjust
2968         expected errors.
2969         * testsuite/23_containers/multimap/48101_neg.cc: Likewise.
2970         * testsuite/23_containers/multiset/48101_neg.cc: Likewise.
2971         * testsuite/23_containers/set/48101_neg.cc: Likewise.
2972         * testsuite/23_containers/unordered_map/48101_neg.cc: Likewise.
2973         * testsuite/23_containers/unordered_multimap/48101_neg.cc: Likewise.
2974         * testsuite/23_containers/unordered_multiset/48101_neg.cc: Likewise.
2975         * testsuite/23_containers/unordered_set/48101_neg.cc: Likewise.
2976
2977         * include/bits/invoke.h [__cplusplus < 201703L] (__invoke_r<void>):
2978         Use _GLIBCXX14_CONSTEXPR because void functions cannot be constexpr
2979         in C++11.
2980
2981         * doc/xml/manual/status_cxx2020.xml: Update P0608R3, P0777R1, and
2982         P1165R1 entries.
2983         * doc/html/*: Regenerate.
2984         * include/std/tuple (make_from_tuple): Use remove_reference_t instead
2985         of decay_t (P0777R1).
2986
2987 2019-05-17  François Dumont  <fdumont@gcc.gnu.org>
2988
2989         Move from state of allocators (LWG2593)
2990         * include/bits/stl_deque.h
2991         (_Deque_base(_Deque_base&&, false_type)): Remove.
2992         (_Deque_base(_Deque_base&&, true_type)): Remove.
2993         (_Deque_base(_Deque_base&&)): Adapt.
2994         (_Deque_base::_M_move_impl()): Remove.
2995         * testsuite/util/testsuite_allocator.h
2996         (propagating_allocator(propagating_allocator&&)): Preserve move from
2997         state.
2998         * testsuite/23_containers/deque/allocator/move_assign.cc (test02):
2999         Adapt.
3000         * testsuite/23_containers/forward_list/allocator/move_assign.cc (test02):
3001         Adapt.
3002         * testsuite/23_containers/list/allocator/move_assign.cc (test02): Adapt.
3003         * testsuite/23_containers/map/allocator/move_assign.cc (test02): Adapt.
3004         * testsuite/23_containers/multimap/allocator/move_assign.cc (test02):
3005         Adapt.
3006         * testsuite/23_containers/multiset/allocator/move_assign.cc (test02):
3007         Adapt.
3008         * testsuite/23_containers/set/allocator/move_assign.cc (test02): Adapt.
3009         * testsuite/23_containers/unordered_map/allocator/move_assign.cc
3010         (test02): Adapt.
3011         * testsuite/23_containers/unordered_multimap/allocator/move_assign.cc
3012         (test02): Adapt.
3013         * testsuite/23_containers/unordered_multiset/allocator/move_assign.cc
3014         (test02): Adapt.
3015         * testsuite/23_containers/unordered_set/allocator/move_assign.cc
3016         (test02): Adapt.
3017         * testsuite/23_containers/vector/allocator/move_assign.cc (test02):
3018         Adapt.
3019         * testsuite/23_containers/vector/bool/allocator/move_assign.cc (test02):
3020         Adapt.
3021         * testsuite/21_strings/basic_string/allocator/char/move_assign.cc
3022         (test02): Adapt.
3023         * testsuite/21_strings/basic_string/allocator/wchar_t/move_assign.cc
3024         (test02): Adapt.
3025
3026 2019-05-16  Jonathan Wakely  <jwakely@redhat.com>
3027
3028         * src/c++17/fs_ops.cc (absolute(const path&, error_code&))
3029         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Remove bogus assertion.
3030
3031         * include/std/variant (__overload_set): Remove.
3032         (_Arr): New helper.
3033         (_Build_FUN): New class template to define a single FUN overload,
3034         with specializations to prevent unwanted conversions, as per P0608R3.
3035         (_Build_FUNs): New class template to build an overload set of FUN.
3036         (_FUN_type): New alias template to perform overload resolution.
3037         (__accepted_type): Use integer_constant base for failure case. Use
3038         _FUN_type for successful case.
3039         (variant::__accepted_index): Use _Tp instead of _Tp&&.
3040         (variant::variant(_Tp&&)): Likewise.
3041         (variant::operator=(_Tp&&)): Likewise.
3042
3043         * include/std/variant (_Variant_storage<false, _Types...>::_M_reset):
3044         Replace raw visitation with a runtime check for the valueless state
3045         and a non-raw visitor.
3046         (_Variant_storage<false, _Types...>::_M_reset_impl): Remove.
3047         (variant::index()): Remove branch.
3048         (variant::swap(variant&)): Use valueless_by_exception() instead of
3049         comparing the index to variant_npos, and add likelihood attribute.
3050
3051         * include/bits/hashtable_policy.h (_Equal_helper): Remove.
3052         (_Hashtable_base::_Equal_hash_code): Define new class template.
3053         (_Hashtable_base::_M_equals): Use _Equal_hash_code instead of
3054         _Equal_helper.
3055
3056         * include/bits/hashtable_policy.h (_Hashtable_ebo_helper::_S_get):
3057         Replace with _M_get non-static member function.
3058         (_Hashtable_ebo_helper::_S_cget): Replace with _M_cget non-static
3059         member function.
3060         (_Hash_code_base, _Local_iterator_base, _Hashtable_base):
3061         (_Hashtable_alloc): Adjust to use non-static members of EBO helper.
3062
3063         * include/bits/hashtable_policy.h (_Hash_code_base::_M_swap): Use
3064         _S_get accessors for members in EBO helpers.
3065         (_Hash_code_base::_M_extract(), _Hash_code_base::_M_ranged_hash())
3066         (_Hash_code_base::_M_h1(), _Hash_code_base::_M_h2()): Remove non-const
3067         overloads.
3068         (_Hashtable_base::_M_swap): Use _S_get accessors for members in EBO
3069         helpers.
3070         (_Hashtable_base::_M_eq()): Remove non-const overload.
3071
3072 2019-05-15  Jonathan Wakely  <jwakely@redhat.com>
3073
3074         * include/std/variant (visit, visit<R>): Qualify calls to __do_visit.
3075
3076 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
3077
3078         * testsuite/util/testsuite_allocator.h (NullablePointer::operator bool):
3079         Fix return value.
3080
3081 2019-05-14  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
3082
3083         * config/os/solaris/solaris2.10: Move to ...
3084         * config/os/solaris: ... this.
3085         * configure.host (os_include_dir): Adapt.
3086         (abi_baseline_pair): Remove Solaris 10 handling.
3087         * config/abi/post/i386-solaris2.10: Remove.
3088         * config/abi/post/sparc-solaris2.10: Remove.
3089         * config/abi/post/i386-solaris2.11: Rename to ...
3090         * config/abi/post/i386-solaris: ... this.
3091         * config/abi/post/sparc-solaris2.11: Rename to ...
3092         * config/abi/post/sparc-solaris: ... this.
3093
3094         * libsupc++/new_opa.cc [_GLIBCXX_HAVE_MEMALIGN] [__sun]: Remove
3095         workaround.
3096
3097         * testsuite/ext/enc_filebuf/char/13598.cc: Remove *-*-solaris2.10
3098         xfail.
3099
3100 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
3101
3102         * include/std/variant (__visit_with_index): Remove typedef.
3103         (__deduce_visit_result): New tag type.
3104         (__raw_visit, __raw_idx_visit): New helper functions for "raw"
3105         visitation of possibly-valueless variants, forwarding to __do_visit
3106         with the relevant tag type.
3107         (_Variant_storage<false, _Types...>::_M_reset_impl): Use __raw_visit
3108         and make lambda return void.
3109         (__variant_construct): Likewise.
3110         (_Copy_assign_base::operator=, _Move_assign_base::operator=): Use
3111         __raw_idx_visit and make lambda return void.
3112         (_Multi_array::__untag_result): Add metafunction to check the function
3113         pointer type for a tag type that dictates the kind of visitation.
3114         (_Multi_array<_Ret(*)(_Visitor, _Variants...), __first, __rest...>):
3115         Use decltype(auto) instead of tagged function pointer type.
3116         (__gen_vtable_impl): Remove bool non-type parameter and unused
3117         _Variant_tuple parameter.
3118         (__gen_vtable_impl::__visit_invoke_impl): Remove.
3119         (__gen_vtable_impl::__do_visit_invoke): Remove.
3120         (__gen_vtable_impl::__do_visit_invoke_r): Remove.
3121         (__gen_vtable_impl::__visit_invoke): Use if-constexpr and __invoke_r
3122         for the visit<R> case, rather than dispatching to separate functions.
3123         (_VARIANT_RELATION_FUNCTION_TEMPLATE): Use __raw_idx_visit and make
3124         lambda return void.
3125         (variant::swap): Likewise.
3126         (__do_visit): Replace two non-type template parameters with a single
3127         type parameter, so that the caller must specify the visitor's return
3128         type (or one of the tag types).
3129         (visit): Deduce a return type from the visitor and use the
3130         __deduce_visit_result tag to enforce that all overloads return the
3131         same type.
3132         (visit<R>): Call __do_visit<R> with explicit result type.
3133         (__variant_hash_call_base_impl::operator()): Use __raw_visit and make
3134         lambda return void.
3135
3136 2019-05-14  Nina Dinka Ranns  <dinka.ranns@gmail.com>
3137
3138         nonesuch is insufficiently useless (lwg2996)
3139         * include/std/type_traits (struct __nonesuch): Added private base
3140         class to make __nonesuch not an aggregate and removed deleted default
3141         constructor.
3142         * include/bits/stl_pair.h (struct __nonesuch_no_braces): Removed.
3143         (operator=(const pair&)): Use __nonesuch instead of
3144         __nonesuch_no_braces.
3145         (operator=(pair&&)): Likewise
3146         * include/std/tuple (operator=(const tuple&)): Use __nonesuch instead
3147         of __nonesuch_no_braces.
3148         (operator=(tuple&&)): Likewise
3149         * include/experimental/type_traits (struct nonesuch): Added private
3150         base class to make nonesuch not an aggregate and removed deleted
3151         default constructor.
3152         * testsuite/20_util/nonesuch/nonesuch.cc: New.
3153         * testsuite/experimental/type_traits/nonesuch.cc: New.
3154
3155 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
3156
3157         * include/bits/std_function.h (_Simple_type_wrapper): Remove.
3158         (_Function_handler): Remove partial specializations for void return
3159         types and pointers to member.
3160         (_Function_handler::_M_manager): Adapt to removal of
3161         _Simple_type_wrapper.
3162         (_Function_handler::_M_invoke): Use __invoke_r instead of __invoke.
3163         * include/std/functional (_Bind_result::__enable_if_void)
3164         (_Bind_result::__disable_if_void): Remove sfinae helpers.
3165         (_Bind_result::__call): Use __invoke_r and remove overloads for void
3166         return types.
3167         * include/std/future (__future_base::_Task_state::_M_run)
3168         (__future_base::_Task_state::_M_run_delayed): Use __invoke_r and
3169         change return type of lambda expressions.
3170
3171         * include/bits/invoke.h (__invoke_r): Define new function implementing
3172         the INVOKE<R> pseudo-function.
3173         * testsuite/20_util/function_objects/invoke/1.cc: Add more tests.
3174         * testsuite/20_util/function_objects/invoke/2.cc: New test.
3175
3176         * include/std/type_traits (__is_nt_convertible_helper): Define it
3177         unconditionally, not only for C++20.
3178         (__is_nothrow_convertible): Define internal trait for use in C++11.
3179         (__is_nt_invocable_impl: Fix by using __is_nothrow_convertible.
3180         (is_invocable_r_v, is_nothrow_invocable_r_v): Add missing parameter.
3181         * testsuite/20_util/is_nothrow_convertible/value_ext.cc: New test.
3182         * testsuite/20_util/is_nothrow_convertible/value.cc: Check with type
3183         that has nothrow explicit conversion but potentially-throwing implicit
3184         conversion.
3185         * testsuite/20_util/is_nothrow_invocable/value.cc: Likewise.
3186         * testsuite/20_util/is_nothrow_invocable/value_ext.cc: Fix helper
3187         function to only consider implicit conversions.
3188         * testsuite/20_util/tuple/cons/noexcept_specs.cc: Add comment.
3189
3190         * include/std/iterator: Include <iosfwd> instead of <istream> and
3191         <ostream>.
3192
3193         * include/bits/stl_tree.h (_Rb_tree::erase(const Key*, const Key*)):
3194         Remove unused, non-standard function.
3195
3196         * include/bits/regex.h (match_results::max_size()): Adjust return
3197         value to account for prefix/suffix/unmatched subs.
3198         (match_results::_M_resize(unsigned int)): Use _Base_type::assign to
3199         reset the contained sub matches.
3200         (match_results::_M_establish_failed_match(_Bi_iter)): Add new member
3201         function to set result state following a failed match.
3202         * include/bits/regex.tcc (__regex_algo_impl): Remove loop to set
3203         sub_match states after _M_resize. Use _M_establish_failed_match.
3204
3205         PR libstdc++/69724
3206         * include/std/thread (thread::_State_impl, thread::_S_make_state):
3207         Replace single _Callable parameter with variadic _Args pack, to
3208         forward them directly to the tuple of decayed copies.
3209         * testsuite/30_threads/thread/cons/69724.cc: New test.
3210
3211 2019-05-14  Nina Dinka Ranns  <dinka.ranns@gmail.com>
3212
3213         Inconsistency wrt Allocators in basic_string assignment (LWG2579)
3214         * include/bits/basic_string.h: (operator=(const basic_string&):
3215         Move allocator decision to assign.
3216         (assign(const basic_string&)): Move allocator decision here.
3217         * testsuite/21_strings/basic_string/allocator/char/copy_assign.cc:
3218         Add tests.
3219         * testsuite/21_strings/basic_string/allocator/wchar_t/copy_assign.cc:
3220         Add tests.
3221
3222 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
3223
3224         * testsuite/util/testsuite_allocator.h (memory_resource)
3225         (default_resource_mgr): Fix indentation.
3226
3227         * testsuite/20_util/allocator_traits/members/allocate_hint_nonpod.cc:
3228         Use operator-> to access raw pointer member.
3229         * testsuite/23_containers/vector/59829.cc: Likewise.
3230         * testsuite/23_containers/vector/bool/80893.cc: Likewise.
3231         * testsuite/libstdc++-prettyprinters/cxx11.cc: Use NullablePointer.
3232         * testsuite/util/testsuite_allocator.h (NullablePointer): New utility
3233         for tests.
3234         (PointerBase, PointerBase_void): Derive from NullablePointer and use
3235         its constructors and equality operators. Change converting
3236         constructors to use operator-> to access private member of the other
3237         pointer type.
3238         (PointerBase_void::operator->()): Add, for access to private member.
3239         (operator-(PointerBase, PointerBase)): Change to hidden friend.
3240         (operator==(PointerBase, PointerBase)): Remove.
3241         (operator!=(PointerBase, PointerBase)): Remove.
3242
3243         * python/libstdcxx/v6/printers.py (UniquePointerPrinter.__init__): Do
3244         not assume field called _M_head_impl is the first tuple element.
3245         * testsuite/libstdc++-prettyprinters/compat.cc: Make tuple
3246         implementation more accurate.
3247         * testsuite/libstdc++-prettyprinters/cxx11.cc: Check unique_ptr with
3248         empty pointer type and non-empty deleter.
3249
3250         LWG 2899 - Make is_move_constructible correct for unique_ptr
3251         * include/bits/unique_ptr.h (__uniq_ptr_impl): Add move constructor,
3252         move assignment operator.
3253         (__uniq_ptr_impl::release(), __uniq_ptr_impl::reset(pointer)): Add.
3254         (__uniq_ptr_data): New class template with conditionally deleted
3255         special members.
3256         (unique_ptr, unique_ptr<T[], D>): Change type of data member from
3257         __uniq_ptr_impl<T, D> to __uniq_ptr_data<T, D>. Define move
3258         constructor and move assignment operator as defaulted.
3259         (unique_ptr::release(), unique_ptr<T[], D>::release()): Forward to
3260         __uniq_ptr_impl::release().
3261         (unique_ptr::reset(pointer), unique_ptr<T[], D>::reset<U>(U)): Forward
3262         to __uniq_ptr_impl::reset(pointer).
3263         * python/libstdcxx/v6/printers.py (UniquePointerPrinter.__init__):
3264         Check for new __uniq_ptr_data type.
3265         * testsuite/20_util/unique_ptr/dr2899.cc: New test.
3266
3267 2019-05-13  Jonathan Wakely  <jwakely@redhat.com>
3268
3269         PR libstdc++/90454.cc path construction from void*
3270         * include/bits/fs_path.h (path::_Path): Use remove_pointer so that
3271         pointers to void are rejected as well as void.
3272         * include/experimental/bits/fs_path.h (path::_Path): Likewise.
3273         * testsuite/27_io/filesystem/path/construct/80762.cc: Also check
3274         pointers to void.
3275         * testsuite/experimental/filesystem/path/construct/80762.cc: Likewise.
3276
3277         * doc/xml/manual/policy_data_structures.xml: Comment out stray
3278         <remark> elements. Fix formatting of bibliography references.
3279
3280 2019-05-13  Edward Smith-Rowland  <3dw4rd@verizon.net>
3281
3282         * doc/xml/manual/status_cxx2020.xml: Document P0811R3 status.
3283
3284 2019-05-13  Jonathan Wakely  <jwakely@redhat.com>
3285
3286         Remove Profile Mode, deprecated since 7.1.0
3287         * doc/Makefile.am: Remove XML file for profile mode docs.
3288         * doc/Makefile.in: Regenerate.
3289         * doc/xml/authors.xml: Remove authors of profile mode docs.
3290         * doc/xml/manual/appendix_contributing.xml: Remove mention of profile
3291         mode.
3292         * doc/xml/manual/debug.xml: Likewise.
3293         * doc/xml/manual/evolution.xml: Document removal of profile mode.
3294         * doc/xml/manual/profile_mode.xml: Remove profile mode docs.
3295         * doc/xml/manual/spine.xml: Remove profile mode author credit.
3296         * doc/xml/manual/test.xml: Remove docs for dg-require-profile-mode
3297         directive.
3298         * doc/xml/manual/using.xml: Remove docs for profile mode headers and
3299         macro.
3300         * doc/html/*: Regenerate.
3301         * include/Makefile.am: Remove profile mode headers.
3302         * include/Makefile.in: Regenerate.
3303         * include/bits/c++config (std::__profile): Remove namespace.
3304         [_GLIBCXX_PROFILE]: Remove checks for macro.
3305         * include/profile/array: Remove.
3306         * include/profile/base.h: Remove.
3307         * include/profile/bitset: Remove.
3308         * include/profile/deque: Remove.
3309         * include/profile/forward_list: Remove.
3310         * include/profile/impl/profiler.h: Remove.
3311         * include/profile/impl/profiler_algos.h: Remove.
3312         * include/profile/impl/profiler_container_size.h: Remove.
3313         * include/profile/impl/profiler_hash_func.h: Remove.
3314         * include/profile/impl/profiler_hashtable_size.h: Remove.
3315         * include/profile/impl/profiler_list_to_slist.h: Remove.
3316         * include/profile/impl/profiler_list_to_vector.h: Remove.
3317         * include/profile/impl/profiler_map_to_unordered_map.h: Remove.
3318         * include/profile/impl/profiler_node.h: Remove.
3319         * include/profile/impl/profiler_state.h: Remove.
3320         * include/profile/impl/profiler_trace.h: Remove.
3321         * include/profile/impl/profiler_vector_size.h: Remove.
3322         * include/profile/impl/profiler_vector_to_list.h: Remove.
3323         * include/profile/iterator_tracker.h: Remove.
3324         * include/profile/list: Remove.
3325         * include/profile/map: Remove.
3326         * include/profile/map.h: Remove.
3327         * include/profile/multimap.h: Remove.
3328         * include/profile/multiset.h: Remove.
3329         * include/profile/ordered_base.h: Remove.
3330         * include/profile/set: Remove.
3331         * include/profile/set.h: Remove.
3332         * include/profile/unordered_base.h: Remove.
3333         * include/profile/unordered_map: Remove.
3334         * include/profile/unordered_set: Remove.
3335         * include/profile/vector: Remove.
3336         * scripts/run_doxygen: Do not process profile mode headers.
3337         * testsuite/23_containers/array/element_access/60497.cc: Don't use
3338         profile mode type.
3339         * testsuite/23_containers/array/specialized_algorithms/swap_cxx17.cc:
3340         Remove dg-skip-if for profile mode.
3341         * testsuite/23_containers/forward_list/capacity/1.cc: Remove
3342         preprocessor check for profile mode.
3343         * testsuite/23_containers/list/capacity/29134.cc: Likewise.
3344         * testsuite/23_containers/map/modifiers/extract.cc: Remove dg-skip-if
3345         for profile mode.
3346         * testsuite/23_containers/map/modifiers/insert_or_assign/1.cc:
3347         Likewise.
3348         * testsuite/23_containers/map/modifiers/try_emplace/1.cc: Likewise.
3349         * testsuite/23_containers/multimap/modifiers/extract.cc: Likewise.
3350         * testsuite/23_containers/multiset/modifiers/extract.cc: Likewise.
3351         * testsuite/23_containers/set/modifiers/extract.cc: Likewise.
3352         * testsuite/23_containers/unordered_map/modifiers/extract.cc:
3353         Likewise.
3354         * testsuite/23_containers/unordered_multimap/modifiers/extract.cc:
3355         Likewise.
3356         * testsuite/23_containers/unordered_multiset/modifiers/extract.cc:
3357         Likewise.
3358         * testsuite/23_containers/unordered_set/modifiers/extract.cc:
3359         Likewise.
3360         * testsuite/23_containers/vector/bool/capacity/29134.cc: Remove
3361         preprocessor check for profile mode.
3362         * testsuite/23_containers/vector/bool/modifiers/insert/31370.cc:
3363         Likewise.
3364         * testsuite/23_containers/vector/modifiers/insert_vs_emplace.cc:
3365         Remove dg-skip-if for profile mode.
3366         * testsuite/25_algorithms/binary_search/partitioned.cc: Likewise.
3367         * testsuite/25_algorithms/equal_range/partitioned.cc: Likewise.
3368         * testsuite/25_algorithms/lexicographical_compare/71545.cc: Likewise.
3369         * testsuite/25_algorithms/lower_bound/partitioned.cc: Likewise.
3370         * testsuite/25_algorithms/upper_bound/partitioned.cc: Likewise.
3371         * testsuite/Makefile.am: Remove profile_flags variable and
3372         * testsuite/Makefile.am: Remove profile_flags variable and
3373         check-profile target.
3374         * testsuite/Makefile.in: Regenerate.
3375         * testsuite/ext/profile/all.cc: Remove.
3376         * testsuite/ext/profile/mutex_extensions_neg.cc: Remove.
3377         * testsuite/ext/profile/profiler_algos.cc: Remove.
3378         * testsuite/ext/profile/replace_new.cc: Remove.
3379         * testsuite/ext/throw_allocator/deallocate_global.cc: Remove
3380         preprocessor check for profile mode.
3381         * testsuite/ext/throw_allocator/deallocate_local.cc: Likewise.
3382         * testsuite/lib/libstdc++.exp (check_v3_target_profile_mode): Remove.
3383         (check_v3_target_normal_mode): Do not check for profile mode macro.
3384         * testsuite/libstdc++-prettyprinters/80276.cc: Remove dg-skip-if for
3385         profile mode.
3386         * testsuite/libstdc++-prettyprinters/compat.cc: Likewise.
3387         * testsuite/libstdc++-prettyprinters/cxx11.cc: Likewise.
3388         * testsuite/libstdc++-prettyprinters/cxx17.cc: Likewise.
3389         * testsuite/libstdc++-prettyprinters/debug.cc: Likewise.
3390         * testsuite/libstdc++-prettyprinters/debug_cxx11.cc: Likewise.
3391         * testsuite/libstdc++-prettyprinters/libfundts.cc: Likewise.
3392         * testsuite/libstdc++-prettyprinters/simple.cc: Likewise.
3393         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
3394         * testsuite/libstdc++-prettyprinters/whatis.cc: Likewise.
3395         * testsuite/libstdc++-prettyprinters/whatis2.cc: Likewise.
3396
3397         Remove array_allocator extension, deprecated since 4.9.0
3398         * doc/xml/manual/allocator.xml: Remove documentation for
3399         array_allocator.
3400         * doc/xml/manual/evolution.xml: Document array_allocator removal.
3401         * doc/xml/manual/using.xml: Remove header from documentation.
3402         * include/Makefile.am: Remove <ext/array_allocator.h> header.
3403         * include/Makefile.in: Regenerate.
3404         * include/ext/array_allocator.h: Remove.
3405         * include/precompiled/extc++.h: Do not include removed header.
3406         * testsuite/ext/array_allocator/1.cc: Remove.
3407         * testsuite/ext/array_allocator/2.cc: Remove.
3408         * testsuite/ext/array_allocator/26875.cc: Remove.
3409         * testsuite/ext/array_allocator/3.cc: Remove.
3410         * testsuite/ext/array_allocator/check_deallocate_null.cc: Remove.
3411         * testsuite/ext/array_allocator/check_delete.cc: Remove.
3412         * testsuite/ext/array_allocator/check_new.cc: Remove.
3413         * testsuite/ext/array_allocator/variadic_construct.cc: Remove.
3414         * testsuite/ext/headers.cc: Do not include removed header.
3415
3416 2019-05-11  François Dumont  <fdumont@gcc.gnu.org>
3417
3418         * include/bits/stl_bvector.h
3419         (operator==(const _Bit_iterator_base&, const _Bit_iterator_base&)):
3420         Make hidden friend.
3421         (operator<(const _Bit_iterator_base&, const _Bit_iterator_base&)):
3422         Likewise.
3423         (operator!=(const _Bit_iterator_base&, const _Bit_iterator_base&)):
3424         Likewise.
3425         (operator>(const _Bit_iterator_base&, const _Bit_iterator_base&)):
3426         Likewise.
3427         (operator<=(const _Bit_iterator_base&, const _Bit_iterator_base&)):
3428         Likewise.
3429         (operator>=(const _Bit_iterator_base&, const _Bit_iterator_base&)):
3430         Likewise.
3431         (operator-(const _Bit_iterator_base&, const _Bit_iterator_base&)):
3432         Likewise.
3433         (_Bit_iterator::operator+(difference_type)): Likewise and allow NRVO
3434         copy elision.
3435         (_Bit_iterator::operator-(difference_type)): Likewise.
3436         (operator+(ptrdiff_t, const _Bit_iterator&)): Make hidden friend.
3437         (_Bit_const_iterator::operator+(difference_type)): Likewise and allow
3438         NRVO copy elision.
3439         (_Bit_const_iterator::operator-(difference_type)): Likewise.
3440         (operator+(ptrdiff_t, const _Bit_const_iterator&)): Make hidden friend.
3441
3442 2019-05-10  Jonathan Wakely  <jwakely@redhat.com>
3443
3444         PR libstdc++/81266
3445         * testsuite/util/thread/all.h: Do not use remove_pointer for
3446         std::thread::native_handle_type.
3447
3448         PR libstdc++/90397
3449         * include/std/variant (_Variant_storage<false, Types...>::_M_storage())
3450         (_Variant_storage<true, Types...>::_M_reset()))
3451         (_Variant_storage<true, Types...>::_M_storage())): Add noexcept.
3452         (__get_storage): Likewise.
3453         (variant): Add noexcept to friend declarations for __get and
3454         __get_storage.
3455
3456         PR libstdc++/90388
3457         * include/bits/unique_ptr.h (default_delete, default_delete<T[]>):
3458         Use _Require for constraints.
3459         (operator>(nullptr_t, const unique_ptr<T,D>&)): Implement exactly as
3460         per the standard.
3461         (__uniq_ptr_hash): New base class with conditionally-disabled call
3462         operator.
3463         (hash<unique_ptr<T,D>>): Derive from __uniq_ptr_hash.
3464         * testsuite/20_util/default_delete/48631_neg.cc: Adjust dg-error line.
3465         * testsuite/20_util/unique_ptr/hash/90388.cc: New test.
3466
3467         * include/bits/shared_ptr.h: Improve docs.
3468         * include/bits/shared_ptr_base.h: Likewise.
3469         * include/bits/stl_uninitialized.h: Likewise.
3470         * include/bits/unique_ptr.h: Likewise.
3471         * libsupc++/new: Likewise.
3472
3473 2019-05-09  François Dumont  <fdumont@gcc.gnu.org>
3474
3475         * include/bits/stl_deque.h
3476         (operator==(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3477         Make hidden friend.
3478         (operator!=(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3479         Likewise.
3480         (operator<(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3481         Likewise.
3482         (operator<=(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3483         Likewise.
3484         (operator>(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3485         Likewise.
3486         (operator>=(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3487         Likewise.
3488         (_Deque_iterator<>::operator+(difference_type)): Likewise and allow NRVO
3489         copy elision.
3490         (_Deque_iterator<>::operator-(difference_type)): Likewise.
3491
3492 2019-05-08  François Dumont  <fdumont@gcc.gnu.org>
3493
3494         PR libstdc++/90277
3495         * testsuite/23_containers/unordered_multiset/insert/24061-multiset.cc
3496         (test01): Reserve for number of insertions to avoid rehash during test.
3497         * testsuite/23_containers/unordered_multimap/insert/24061-multimap.cc
3498         (test01): Likewise.
3499         * testsuite/23_containers/unordered_multimap/insert/24061-multimap.cc
3500         (test01): Likewise.
3501         (test02): Likewise.
3502         (test03): Likewise.
3503
3504 2019-05-08  Jonathan Wakely  <jwakely@redhat.com>
3505
3506         * include/experimental/bits/fs_path.h: Improve docs.
3507         * include/experimental/bits/net.h: Fix wrong header name in comment.
3508         Do not document implementation details.
3509         * include/experimental/netfwd: Fix doxygen grouping.
3510
3511 2019-05-07  Jonathan Wakely  <jwakely@redhat.com>
3512
3513         * include/bits/stl_pair.h: Improve docs.
3514         * include/std/tuple: Likewise.
3515
3516         * doc/doxygen/doxygroups.cc (std::literals): Add documentation for
3517         inline namespace.
3518         * include/std/chrono: Improve docs.
3519         * include/std/ratio: Do not document implementation details.
3520         * testsuite/20_util/ratio/cons/cons_overflow_neg.cc: Adjust dg-error
3521         line numbers.
3522         * testsuite/20_util/ratio/operations/ops_overflow_neg.cc: Likewise.
3523
3524         PR libstdc++/89102
3525         * doc/xml/manual/intro.xml: Document DR 2408 and 2465 changes.
3526         * include/std/chrono (__duration_common_type_wrapper): Replace with ...
3527         (__duration_common_type): New helper.
3528         (common_type<chrono::duration<R1, P2>, chrono::duration<R2, P2>>): Use
3529         __duration_common_type.
3530         (__timepoint_common_type_wrapper): Replace with ...
3531         (__timepoint_common_type): New helper.
3532         (common_type<chrono::time_point<C, D2>, chrono::time_point<C, D2>>):
3533         Use __time_point_common_type.
3534         * include/std/type_traits (common_type<>): Define, as per LWG 2408.
3535         (__common_type_impl): If either argument is transformed by decay,
3536         use the common_type of the decayed types.
3537         (__common_type_impl<_Tp, _Up, _Tp, _Up>): If the types are already
3538         decayed, use __do_common_type_impl to get the common_type.
3539         (common_type<_Tp>): Use common_type<_Tp, _Tp>.
3540         (__do_member_type_wrapper, __member_type_wrapper)
3541         (__expanded_common_type_wrapper): Remove.
3542         (__common_type_pack, __common_type_fold): New helpers.
3543         (common_type<_Tp, _Up, _Vp...>): Use new helpers instead of
3544         __member_type_wrapper and __expanded_common_type_wrapper.
3545         * testsuite/20_util/common_type/requirements/explicit_instantiation.cc:
3546         Test zero-length template argument list.
3547         * testsuite/20_util/common_type/requirements/sfinae_friendly_1.cc:
3548         Test single argument cases and argument types that should decay.
3549         * testsuite/20_util/common_type/requirements/sfinae_friendly_2.cc:
3550         Adjust expected error.
3551         * testsuite/20_util/duration/literals/range_neg.cc: Use zero for
3552         dg-error lineno.
3553         * testsuite/20_util/duration/requirements/typedefs_neg1.cc: Likewise.
3554         * testsuite/20_util/duration/requirements/typedefs_neg2.cc: Likewise.
3555         * testsuite/20_util/duration/requirements/typedefs_neg3.cc: Likewise.
3556
3557         * doc/xml/manual/intro.xml: Fix DR 2537 and DR 2566 confusion.
3558
3559 2019-05-01  Nina Dinka Ranns  <dinka.ranns@gmail.com>
3560
3561         Make allocator propagation more consistent for
3562         operator+(basic_string) (P1165R1)
3563         * include/bits/basic_string.h
3564         (operator+(basic_string&&, basic_string&&): Changed resulting
3565         allocator to always be the one from the first parameter.
3566         * include/bits/basic_string.tcc
3567         (operator+(const _CharT*, const basic_string&)): Changed
3568         resulting allocator to be SOCCC on the second parameter's allocator.
3569         (operator+(_CharT, const basic_string&)): Likewise.
3570         * testsuite/21_strings/basic_string/allocator/char/operator_plus.cc:
3571         New.
3572         * testsuite/21_strings/basic_string/allocator/wchar_t/operator_plus.cc:
3573         New.
3574
3575 2019-05-07  Jonathan Wakely  <jwakely@redhat.com>
3576
3577         * include/bits/regex.h: Improve docs.
3578         * include/bits/regex.tcc: Do not document implementation details.
3579
3580         * testsuite/19_diagnostics/error_code/hash.cc: New test.
3581
3582 2019-05-06  François Dumont  <fdumont@gcc.gnu.org>
3583
3584         * python/libstdcxx/v6/printers.py (add_one_template_type_printer):
3585         Add type printer for container types in std::__debug namespace.
3586         * testsuite/lib/gdb-test.exp (whatis-regexp-test): New.
3587         (gdb-tests): Use distinct parameters for the type of test and use of
3588         regex.
3589         (gdb-test): Check for regex test even if 'whatis' test.
3590         * testsuite/libstdc++-prettyprinters/80276.cc: Adapt for _GLIBCXX_DEBUG
3591         mode.
3592         * testsuite/libstdc++-prettyprinters/cxx11.cc: Likewise.
3593         * testsuite/libstdc++-prettyprinters/cxx17.cc: Likewise.
3594         * testsuite/libstdc++-prettyprinters/libfundts.cc: Likewise.
3595         * testsuite/libstdc++-prettyprinters/simple.cc: Likewise.
3596         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
3597         * testsuite/libstdc++-prettyprinters/whatis.cc: Likewise.
3598         * testsuite/libstdc++-prettyprinters/whatis2.cc: Likewise.
3599
3600 2019-05-04  Jonathan Wakely  <jwakely@redhat.com>
3601
3602         * include/std/system_error (error_category): Fix comment.
3603
3604         PR libstdc++/90299
3605         * src/c++17/fs_ops.cc (absolute(const path&)): Report an error if the
3606         argument is an empty path.
3607         (absolute(const path&, error_code&)): Use invalid_argument as error
3608         code instead of no_such_file_or_directory.
3609         * testsuite/27_io/filesystem/operations/absolute.cc: Check handling
3610         of non-existent paths and empty paths with both overloads of absolute.
3611
3612         * include/std/system_error (error_category, error_code)
3613         (error_condition): Improve docs.
3614         * libsupc++/exception: Add missing @addtogroup Doxygen command.
3615         * libsupc++/exception_ptr.h (exception_ptr): Link equality operators
3616         to class documentation. Suppress documentation for implementation
3617         details.
3618         * libsupc++/nested_exception.h (throw_with_nested, rethrow_if_nested):
3619         Suppress documentation for implementation details.
3620
3621         * include/std/system_error (error_code): Remove friend declaration
3622         for hash<error_code>.
3623         (hash<error_code>::operator()): Use public member functions to access
3624         value and category.
3625         (hash<error_condition>::operator()): Use address of category, not
3626         its object representation.
3627         * src/c++11/compatibility-c++0x.cc (hash<error_code>::operator()):
3628         Use public member functions to access value and category.
3629         * testsuite/19_diagnostics/error_condition/hash.cc: New test.
3630
3631 2019-05-04  François Dumont  <fdumont@gcc.gnu.org>
3632
3633         * include/bits/hashtable.h (_Hashtable<>::rehash): Review comment.
3634         * include/bits/hashtable_policy.h
3635         (_Prime_rehash_policy::_M_bkt_for_elements): Use __builtin_ceill.
3636         (_Power2_rehash_policy::_M_bkt_for_elements): Likewise.
3637         (_Power2_rehash_policy::_M_next_bkt): Enforce returning a result not
3638         smaller than input value rather than always greater. Preserve
3639         _M_next_resize if called with 0 input. Use __builtin_floorl.
3640         (_Power2_rehash_policy::_M_need_rehash): Rehash only if number of
3641         elements + number of insertions is greater than _M_next_resize. Start
3642         with 11 buckets if not told otherwise. Use __builtin_floorl.
3643         (_Rehash_base<>::reserve): Use rehash policy _M_bkt_for_elements.
3644         * src/c++11/hashtable_c++0x.cc (_Prime_rehash_policy::_M_next_bkt):
3645         Preserve _M_next_resize if called with 0 input. Use __builtin_floorl.
3646         (_Prime_rehash_policy::_M_need_rehash): Start with 11 buckets if not
3647         told otherwise. Use __builtin_floorl.
3648         * testsuite/23_containers/unordered_set/hash_policy/71181.cc: Adapt test
3649         to also validate _Power2_rehash_policy.
3650         * testsuite/23_containers/unordered_set/hash_policy/power2_rehash.cc:
3651         Adapt.
3652
3653 2019-05-03  Jonathan Wakely  <jwakely@redhat.com>
3654
3655         PR libstdc++/61761
3656         * testsuite/26_numerics/complex/proj.cc: Don't assume <cmath> defines
3657         std::copysign.
3658
3659         PR libstdc++/52119
3660         * include/ext/numeric_traits.h (__glibcxx_min): Avoid integer
3661         overflow warning with -Wpedantic -Wsystem-headers.
3662
3663 2019-05-02  Jonathan Wakely  <jwakely@redhat.com>
3664
3665         PR libstdc++/90314
3666         * include/bits/c++config (_GLIBCXX_NOEXCEPT_IF): Use variadic macro.
3667         * include/bits/move.h (swap): Remove extra parentheses.
3668
3669         * include/experimental/bits/lfts_config.h: Improve doc markup.
3670         * include/experimental/optional: Improve docs.
3671         (_Has_addressof_mem, _Has_addressof_free, _Has_addressof)
3672         (__constexpr_addressof): Remove.
3673         (optional::operator->()): Use std::__addressof().
3674         * include/std/optional (optional::operator->()): Adjust whitespace.
3675         * testsuite/experimental/optional/constexpr/observers/2.cc: Check
3676         that operator-> is still constexpr with overloaded operator&. Change
3677         to compile-only test.
3678         * testsuite/experimental/optional/constexpr/observers/3.cc: Change to
3679         compile-only test.
3680
3681         * include/bits/shared_ptr.h: Improve docs.
3682         * include/bits/shared_ptr_atomic.h: Likewise.
3683         * include/bits/unique_ptr.h: Likewise. Adjust whitespace.
3684
3685         * include/bits/basic_string.h: Fix iterator/index confusion in
3686         Doxygen comments.
3687         * include/bits/range_access.h: Fix Doxygen warnings.
3688         * include/bits/refwrap.h: Do not document implementation details.
3689         (ref, cref): Group docs with reference_wrapper.
3690         * include/std/fstream: Fix Doxygen markup.
3691         * libsupc++/initializer_list (begin, end): Group docs with
3692         initializer_list.
3693
3694         * doc/doxygen/user.cfg.in: Set MARKDOWN_SUPPORT=YES.
3695
3696         * include/bits/unique_lock.h: Fix/improve doxygen markup.
3697         * include/std/mutex: Likewise.
3698         * include/std/shared_mutex: Likewise.
3699
3700         * include/bits/fs_dir.h: Fix/improve doxygen markup.
3701         * include/bits/fs_fwd.h: Likewise.
3702         * include/bits/fs_ops.h: Likewise.
3703         * include/bits/fs_path.h: Likewise.
3704         * include/std/filesystem: Likewise.
3705
3706         * include/experimental/bits/net.h: Fix/improve doxygen markup.
3707         * include/experimental/buffer: Likewise.
3708         * include/experimental/executor: Likewise.
3709         * include/experimental/internet: Likewise.
3710         * include/experimental/io_context: Likewise.
3711         * include/experimental/net: Likewise.
3712         * include/experimental/netfwd: Likewise.
3713         * include/experimental/socket: Likewise.
3714         * include/experimental/timer: Likewise.
3715
3716         * doc/doxygen/doxygroups.cc: Move description of experimental group
3717         here.
3718         * include/experimental/algorithm: Add to libfund-ts doc group.
3719         * include/experimental/any: Likewise. Do not document implementation
3720         details.
3721         * include/experimental/array: Add to libfund-ts doc group.
3722         * include/experimental/bits/lfts_config.h: Define libfund-ts doc group
3723         for Library Fundamentals.
3724         * include/experimental/chrono: Add to libfund-ts doc group.
3725         * include/experimental/deque: Likewise.
3726         * include/experimental/forward_list: Likewise.
3727         * include/experimental/functional: Likewise.
3728         * include/experimental/iterator: Likewise.
3729         * include/experimental/list: Likewise.
3730         * include/experimental/map: Likewise.
3731         * include/experimental/memory: Likewise.
3732         * include/experimental/memory_resource: Likewise. Improve docs.
3733         details.
3734         * include/experimental/numeric: Add to libfund-ts doc group.
3735         * include/experimental/optional: Likewise.
3736         * include/experimental/propagate_const: Likewise.
3737         * include/experimental/random: Likewise.
3738         * include/experimental/ratio: Likewise.
3739         * include/experimental/regex: Likewise.
3740         * include/experimental/set: Likewise.
3741         * include/experimental/source_location: Likewise.
3742         * include/experimental/string: Likewise.
3743         * include/experimental/string_view: Likewise.
3744         * include/experimental/system_error: Likewise.
3745         * include/experimental/tuple: Likewise.
3746         * include/experimental/type_traits: Likewise.
3747         * include/experimental/unordered_map: Likewise.
3748         * include/experimental/unordered_set: Likewise.
3749         * include/experimental/utility: Likewise.
3750         * include/experimental/vector: Likewise.
3751         * testsuite/experimental/any/misc/any_cast_neg.cc: Adjust dg-error.
3752         * testsuite/experimental/array/neg.cc: Adjust dg-error.
3753         * testsuite/experimental/propagate_const/assignment/move_neg.cc:
3754         Likewise.
3755         * testsuite/experimental/propagate_const/cons/move_neg.cc: Likewise.
3756         * testsuite/experimental/propagate_const/requirements2.cc: Likewise.
3757         * testsuite/experimental/propagate_const/requirements3.cc: Likewise.
3758         * testsuite/experimental/propagate_const/requirements4.cc: Likewise.
3759         * testsuite/experimental/propagate_const/requirements5.cc: Likewise.
3760
3761         * include/experimental/bits/fs_dir.h: Fix Doxygen markup.
3762         * include/experimental/bits/fs_fwd.h: Improve docs.
3763         * include/experimental/bits/fs_ops.h: fix Doxygen markup.
3764         * include/experimental/bits/fs_path.h: Likewise.
3765         (path, filesystem_error, u8path): Improve docs.
3766         * include/experimental/filesystem: Link to docs for TS.
3767
3768         * config/allocator/new_allocator_base.h (__allocator_base): Add
3769         workaround for Doxygen bug #6945.
3770         * include/std/memory: Improve docs. Define group for pointer safety.
3771         * include/std/scoped_allocator: Improve docs. Use "undocumented"
3772         conditional to suppress documentation for implementation details.
3773
3774         * include/bits/specfun.h: Improve docs.
3775         * include/tr1/cmath: Likewise. Fix nesting of preprocessor conditions
3776         and namespaces.
3777
3778         * doc/doxygen/doxygroups.cc (std::tr2, std::__gnu_cxx): Improve docs.
3779         (std::experimental): Add docs.
3780         * doc/doxygen/user.cfg.in (PREDEFINED): Expand macros for __cxx11
3781         namespace to nothing when generating docs.
3782         * include/bits/regex_constants.h (std::regex_constants): Improve docs.
3783         * include/std/chrono (std::chrono): Likewise.
3784         * include/std/functional (std::placeholders): Likewise.
3785         * include/std/thread (std::this_thread): Likewise.
3786
3787         * include/parallel/settings.h: Fix Doxygen markup.
3788
3789         * include/ext/pb_ds/detail/bin_search_tree_/*_imps.hpp: Do not define
3790         anything unless PB_DS_CLASS_C_DEC is defined.
3791         * include/ext/pb_ds/detail/binary_heap_/*_imps.hpp: Likewise.
3792         * include/ext/pb_ds/detail/binomial_heap_/*_imps.hpp: Likewise.
3793         * include/ext/pb_ds/detail/binomial_heap_base_/*_imps.hpp: Likewise.
3794         * include/ext/pb_ds/detail/cc_hash_table_map_/*_imps.hpp: Likewise.
3795         * include/ext/pb_ds/detail/gp_hash_table_map_/*_imps.hpp: Likewise.
3796         * include/ext/pb_ds/detail/hash_fn/*_imp.hpp: Likewise.
3797         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/*_imps.hpp:
3798         Likewise.
3799         * include/ext/pb_ds/detail/list_update_map_/*_imps.hpp: Likewise.
3800         * include/ext/pb_ds/detail/ov_tree_map_/*_imps.hpp: Likewise.
3801         * include/ext/pb_ds/detail/pairing_heap_/*_imps.hpp: Likewise.
3802         * include/ext/pb_ds/detail/pat_trie_/*_imps.hpp: Likewise.
3803         * include/ext/pb_ds/detail/rb_tree_map_/*_imps.hpp: Likewise.
3804         * include/ext/pb_ds/detail/rc_binomial_heap_/*_imps.hpp: Likewise.
3805         * include/ext/pb_ds/detail/resize_policy*_imp.hpp: Likewise.
3806         * include/ext/pb_ds/detail/splay_tree_/*_imps.hpp: Likewise.
3807         * include/ext/pb_ds/detail/thin_heap_/*_imps.hpp: Likewise.
3808         * include/ext/pb_ds/detail/trie_policy*_imp.hpp: Likewise.
3809         * include/ext/pb_ds/detail/unordered_iterator/const_iterator.hpp:
3810         Likewise.
3811         * include/ext/pb_ds/detail/unordered_iterator/iterator.hpp: Likewise.
3812         * include/ext/pb_ds/detail/unordered_iterator/point_const_iterator.hpp:
3813         Likewise.
3814         * include/ext/pb_ds/detail/unordered_iterator/point_iterator.hpp:
3815         Likewise.
3816
3817         * doc/doxygen/user.cfg.in: Regenerate with Doxygen 1.8.14 and set
3818         GROUP_NESTED_COMPOUNDS=YES and SORT_BY_SCOPE_NAME=NO. Add various
3819         _GLIBCXX_xxx macros and __attribute__(X) to PREDEFINED macros that
3820         Doxygen expands.
3821
3822 2019-05-01  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
3823
3824         * config/abi/post/i386-solaris2.10/baseline_symbols.txt: Regenerate.
3825         * config/abi/post/i386-solaris2.10/amd64/baseline_symbols.txt: Likewise.
3826         * config/abi/post/i386-solaris2.11/baseline_symbols.txt: Likewise.
3827         * config/abi/post/i386-solaris2.11/amd64/baseline_symbols.txt: Likewise.
3828         * config/abi/post/sparc-solaris2.10/baseline_symbols.txt: Likewise.
3829         * config/abi/post/sparc-solaris2.10/sparcv9/baseline_symbols.txt:
3830         Likewise.
3831         * config/abi/post/sparc-solaris2.11/baseline_symbols.txt: Likewise.
3832         * config/abi/post/sparc-solaris2.11/sparcv9/baseline_symbols.txt:
3833         Likewise.
3834
3835 2019-05-01  Jonathan Wakely  <jwakely@redhat.com>
3836
3837         PR libstdc++/61761
3838         * include/std/complex (__complex_proj): Return parameter unchanged.
3839         [_GLIBCXX_USE_C99_COMPLEX] (__complex_proj): Change overloads for
3840         floating-point types to take std::complex arguments.
3841         [_GLIBCXX_USE_C99_MATH_TR1] (__complex_proj): Add overloads for
3842         floating-point types.
3843         * testsuite/26_numerics/complex/proj.cc: New test.
3844
3845 2019-04-30  Jakub Jelinek  <jakub@redhat.com>
3846
3847         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Change _Lock_policyE2 exports
3848         to _Lock_policyE[012].
3849         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
3850
3851 2019-04-30  Jonathan Wakely  <jwakely@redhat.com>
3852
3853         * testsuite/27_io/filesystem/path/decompose/root_path.cc: Remove
3854         macros accidentally left in.
3855         * testsuite/27_io/filesystem/path/native/string-char8_t.cc: Remove
3856         unnecessary -lstdc++fs option. Fix test for mingw.
3857         * testsuite/experimental/filesystem/path/native/string-char8_t.cc:
3858         Fix test for mingw.
3859
3860 2019-04-30  Jakub Jelinek  <jakub@redhat.com>
3861
3862         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
3863
3864 2019-04-29  Jonathan Wakely  <jwakely@redhat.com>
3865
3866         * include/bits/stl_algo.h (generate_n): Adjust doxygen comment.
3867
3868         * include/bits/move.h (swap(T&, T&), swap(T (&)[N], T (&)[N])): Use
3869         _GLIBCXX_NOEXCEPT_IF to simplify declarations.
3870
3871         PR libstdc++/71312
3872         * src/c++11/shared_ptr.cc (get_mutex): Align pool mutexes to 64 bytes.
3873
3874         * include/bits/stl_bvector.h (vector<bool>::empty()): Add nodiscard
3875         attribute.
3876
3877         * include/bits/stl_iterator_base_types.h (_Iter_base): Remove unused
3878         class template and partial specialization.
3879
3880         PR libstdc++/87982
3881         * include/bits/stl_algo.h (generate_n): Convert _Size parameter to
3882         an integral type.
3883         * include/bits/stl_algobase.h (__size_to_integer): New overloaded
3884         functions to convert a value to an integral type.
3885         (__fill_n_a, __fill_n_a): Assert that __n is already an integral type.
3886         (fill_n): Convert _Size parameter to an integral type.
3887         * testsuite/25_algorithms/fill_n/87982.cc: New test.
3888         * testsuite/25_algorithms/fill_n/87982_neg.cc: New test.
3889         * testsuite/25_algorithms/fill_n/dr426.cc: New test.
3890         * testsuite/25_algorithms/generate_n/87982.cc: New test.
3891         * testsuite/25_algorithms/generate_n/87982_neg.cc: New test.
3892         * testsuite/25_algorithms/generate_n/dr426.cc: New test.
3893
3894 2019-04-28  Nina Dinka Ranns  <dinka.ranns@gmail.com>
3895
3896         Adding noexcept-specification on tuple constructors (LWG 2899)
3897         * libstdc++-v3/include/std/tuple:
3898         (tuple()): Add noexcept-specification.
3899         (tuple(const _Elements&...)): Likewise
3900         (tuple(_UElements&&...)): Likewise
3901         (tuple(const tuple<_UElements...>&)): Likewise
3902         (tuple(tuple<_UElements...>&&)): Likewise
3903         (tuple(const _T1&, const _T2&)): Likewise
3904         (tuple(_U1&&, _U2&&)): Likewise
3905         (tuple(const tuple<_U1, _U2>&): Likewise
3906         (tuple(tuple<_U1, _U2>&&): Likewise
3907         (tuple(const pair<_U1, _U2>&): Likewise
3908         (tuple(pair<_U1, _U2>&&): Likewise
3909         * libstdc++-v3/testsuite/20_util/tuple/cons/noexcept_specs.cc: New
3910
3911 2019-04-27  Marc Glisse  <marc.glisse@inria.fr>
3912
3913         PR libstdc++/87106
3914         * include/bits/stl_uninitialized.h (__relocate_object_a): Mark the
3915         arguments with __restrict.
3916
3917 2019-04-26  H.J. Lu  <hongjiu.lu@intel.com>
3918
3919         * config/abi/post/x86_64-linux-gnu/x32/baseline_symbols.txt: Updated.
3920
3921 2019-04-26  Jonathan Wakely  <jwakely@redhat.com>
3922
3923         * include/experimental/bits/fs_path.h
3924         (path::_S_convert_loc<_InputIterator>): Create const std::string to
3925         avoid redundant call to _S_convert_loc with non-const pointers.
3926
3927         * testsuite/20_util/variant/run.cc: Use a new Hashable type to test
3928         hashing, because pmr::string depends on _GLIBCXX_USE_CXX11_ABI==1.
3929         * testsuite/21_strings/basic_string/hash/hash.cc
3930         [!_GLIBCXX_USE_CXX11_ABI]: Don't test pmr strings.
3931         * testsuite/21_strings/basic_string/hash/hash_char8_t.cc
3932         [!_GLIBCXX_USE_CXX11_ABI]: Likewise.
3933
3934         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Replace wildcard that matches
3935         wstring::_M_replace_dispatch with more specific patterns.
3936         * include/bits/fs_path.h (path::_S_convert_loc<_InputIterator>):
3937         Create const std::string to avoid redundant call to _S_convert_loc
3938         with non-const pointers.
3939         * include/bits/locale_conv.h (__do_str_codecvt): Use if-constexpr to
3940         avoid unnecessary basic_string::assign instantiations.
3941
3942         * include/std/memory (__uses_alloc_args): Add string-literal to
3943         static_assert, to match the one in __uses_alloc.
3944         [__cpp_concepts] (_Std_pair): Use C++2a syntax for concept.
3945         * testsuite/20_util/polymorphic_allocator/construct_c++2a.cc: Check
3946         for recursive uses-allocator construction of nested pairs.
3947         * testsuite/20_util/scoped_allocator/construct_pair_c++2a.cc:: Add
3948         comment.
3949
3950 2019-04-26  Jakub Jelinek  <jakub@redhat.com>
3951
3952         * config/abi/post/s390x-linux-gnu/32/baseline_symbols.txt: Update.
3953         * config/abi/post/s390-linux-gnu/baseline_symbols.txt: Update.
3954         * config/abi/post/powerpc-linux-gnu/baseline_symbols.txt: Update.
3955         * config/abi/post/powerpc64-linux-gnu/32/baseline_symbols.txt: Update.
3956
3957         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
3958         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
3959         * config/abi/post/i386-linux-gnu/baseline_symbols.txt: Update.
3960         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
3961         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
3962         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
3963         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
3964
3965 2019-04-25  Jonathan Wakely  <jwakely@redhat.com>
3966
3967         PR libstdc++/90239
3968         * doc/xml/manual/status_cxx2020.xml: Amend P0591R4 status.
3969         * include/std/scoped_allocator [__cplusplus > 201703L]
3970         (scoped_allocator_adaptor::construct): Define in terms of
3971         uses_allocator_construction_args, as per P0591R4.
3972         * testsuite/20_util/scoped_allocator/construct_pair_c++2a.cc: New test.
3973         * testsuite/util/testsuite_allocator.h: Remove name of unused
3974         parameter.
3975
3976 2019-04-24  Jonathan Wakely  <jwakely@redhat.com>
3977
3978         * doc/xml/manual/status_cxx2017.xml: Document P0024R2 status.
3979         * doc/html/*: Regenerate.
3980
3981         * include/bits/fs_path.h (operator<, operator<=, operator>)
3982         (operator>=, operator==, operator!=): Make hidden friends, as per
3983         LWG 3065.
3984         * testsuite/27_io/filesystem/path/native/string-char8_t.cc: Fix
3985         string type in test.
3986         * testsuite/27_io/filesystem/path/native/string.cc: Likewise.
3987
3988         * include/std/any (any::any(ValueType&&)): Use __and_v.
3989         * include/std/numeric (midpoint(T, T, T), midpoint(T*, T*, T*)):
3990         Likewise.
3991
3992         * include/std/tuple (apply): Use remove_reference_t instead of decay_t
3993         as per P0777R1.
3994         * include/std/type_traits (__result_of_memfun): Use remove_reference
3995         instead of __remove_cvref_t and remove redundant is_same check.
3996         (__inv_unwrap): Use __remove_cvref_t instead of decay_t.
3997
3998         * include/experimental/string_view (basic_string_view::pointer)
3999         (basic_string_view::reference): Fix to refer to non-const value_type.
4000         * include/bits/basic_string.h (basic_string): Use __sv_check and
4001         __sv_limit instead of basic_string_view::_M_check and
4002         basic_string_view::_M_limit.
4003         * include/std/string_view (__sv_check, __sv_limit): New
4004         helper functions to replace basic_string_view::_M_check and
4005         basic_string_view::_M_limit.
4006         (basic_string_view): Add static assertions to enforce ill-formed
4007         requirement for traits_type::char_type from P1148R0, and to enforce
4008         required properties of char-like types.
4009         (basic_string_view::pointer, basic_string_view::reference): Fix to
4010         refer to non-const value_type.
4011         (basic_string_view::operator[], basic_string_view::at)
4012         (basic_string_view::front, basic_string_view::back)
4013         (basic_string_view::data): Use const_reference and const_pointer
4014         typedefs for return types.
4015         (basic_string_view::_M_check, basic_string_view::_M_limit): Remove.
4016         (hash<wstring_view>): Fix argument_type typedef.
4017         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/
4018         char/1.cc: Fix expected return type of basic_string_view::data().
4019         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/
4020         wchar_t/1.cc: Likewise.
4021         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/
4022         char/1.cc: Likewise.
4023         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/
4024         wchar_t/1.cc: Likewise.
4025         * testsuite/21_strings/basic_string_view/requirements/traits_neg.cc:
4026         New test.
4027         * testsuite/21_strings/basic_string_view/requirements/typedefs.cc:
4028         Check reference and pointer typedefs.
4029         * testsuite/experimental/string_view/requirements/typedefs.cc:
4030         Likewise.
4031         * testsuite/experimental/string_view/modifiers/remove_prefix/char/1.cc:
4032         Fix expected return type of basic_string_view::data().
4033         * testsuite/experimental/string_view/modifiers/remove_prefix/wchar_t/
4034         1.cc: Likewise.
4035         * testsuite/experimental/string_view/modifiers/remove_suffix/char/1.cc:
4036         Likewise.
4037         * testsuite/experimental/string_view/modifiers/remove_suffix/wchar_t/
4038         1.cc: Likewise.
4039
4040         PR libstdc++/90220
4041         * include/std/any (__any_caster): Use remove_cv_t instead of decay_t.
4042         Avoid a runtime check for types that can never be stored in std::any.
4043         * testsuite/20_util/any/misc/any_cast.cc: Test std::any_cast with
4044         array types.
4045
4046         PR libstdc++/90220 (partial)
4047         * include/std/any (any_cast<T>(any*), any_cast<T>(const any*)): Do
4048         not attempt ill-formed static_cast to pointers to non-object types.
4049         * testsuite/20_util/any/misc/any_cast.cc: Test std::any_cast with
4050         function types.
4051
4052         * testsuite/20_util/variant/run.cc: Catch exception by reference to
4053         prevent -Wcatch-value warning.
4054
4055         * include/std/variant (__variant_construct): Use template parameter
4056         type instead of equivalent decltype-specifier.
4057         (_Move_ctor_base<false, Types...>::_Move_ctor_base(_Move_ctor_base&&)):
4058         Replace forward with move.
4059         (_Move_ctor_base<false, Types...>::_M_destructive_move)
4060         (_Move_ctor_base<false, Types...>::_M_destructive_copy)
4061         (_Move_ctor_base<true, Types...>::_M_destructive_move)
4062         (_Move_ctor_base<true, Types...>::_M_destructive_copy): Only set the
4063         index after construction succeeds.
4064         (_Copy_assign_base<false, Types...>::operator=): Remove redundant
4065         if-constexpr checks that are always true. Use __remove_cvref_t instead
4066         of remove_reference so that is_nothrow_move_constructible check
4067         doesn't use a const rvalue parameter. In the potentially-throwing case
4068         construct a temporary and move assign it, as per LWG 2904.
4069         (_Move_assign_base<false, Types...>::operator=): Remove redundant
4070         if-constexpr checks that are always true. Use emplace as per LWG 2904.
4071         (variant::operator=(T&&)): Only use emplace conditionally, otherwise
4072         construct a temporary and move assign from it, as per LWG 2904.
4073         * testsuite/20_util/variant/exception_safety.cc: Check that
4074         assignment operators have strong exception safety guarantee.
4075
4076 2019-04-23  Thomas Rodgers <trodgers@redhat.com>
4077
4078         Document PSTL linker flags
4079
4080         * doc/xml/manual/using.xml: Add PSTL linker flags to table 3.1.
4081
4082 2019-04-23  Jonathan Wakely  <jwakely@redhat.com>
4083
4084         * include/std/variant (__detail::__variant::_Traits): Make
4085         _S_trivial_copy_assign depend on _S_trivial_copy_ctor and make
4086         _S_trivial_move_assign depend on _S_trivial_move_ctor, as per
4087         P0602R4.
4088         (__detail::__variant::_Copy_assign_alias): Only depend on
4089         _S_trivial_copy_assign, which subsumes _S_trivial_copy_ctor now.
4090         * testsuite/20_util/variant/compile.cc: Correct checks for trivial
4091         move assignment operators.
4092
4093         PR libstdc++/90165
4094         * include/std/variant (variant::__not_self): New helper for the
4095         is_same_v<remove_cvref_t<T>, variant>==false constraints.
4096         (variant::__to_type_impl): Remove.
4097         (variant::__to_type): Add default argument to check pack size, instead
4098         of using __to_type_impl.
4099         (variant::__accepted_type): Add default argument using __not_self.
4100         (variant::__is_in_place_tag, variant::__not_in_place_tag): New helpers
4101         for variant(T&&) constructor constraint.
4102         (variant::variant(T&&)): Use __not_in_place_tag in constraints.
4103         Extract __accepted_type into a named template parameter for reuse in
4104         other constraints and in the exception specification.
4105         (variant::variant(in_place_type_t<T>, Args&&...))
4106         (variant::variant(in_place_type_t<T>, initializer_list<U>, Args&&...))
4107         (variant::variant(in_place_index_t<T>, Args&&...))
4108         (variant::variant(in_place_index_t<T>, initializer_list<U>, Args&&...))
4109         (variant::operator=T&&)): Remove redundant && from trait arguments.
4110         * testsuite/20_util/variant/compile.cc: Check variant(T&&) constructor
4111         isn't used for in_place_type or in_place_index arguments.
4112
4113         * include/std/type_traits (unwrap_reference_t): Define for C++2a.
4114         (unwrap_ref_decay): Remove inheritance from unwrap_reference.
4115         * testsuite/20_util/unwrap_reference/1.cc: Adjust test to use alias.
4116
4117 2019-04-23  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>
4118             Bernd Edlinger  <bernd.edlinger@hotmail.de>
4119             Jakub Jelinek  <jakub@redhat.com>
4120
4121         PR target/89093
4122         * libsupc++/eh_personality.cc (PERSONALITY_FUNCTION): Add
4123         general-regs-only target attribute for ARM.
4124
4125 2019-04-23  Jonathan Wakely  <jwakely@redhat.com>
4126
4127         PR libstdc++/87431
4128         * include/bits/basic_string.h (_Never_valueless_alt): Make partial
4129         specialization also depend on is_nothrow_move_constructible.
4130         * include/std/variant (__detail::__variant::__never_valueless()):
4131         Only true if the variant would have a move assignment operator.
4132         (__detail::__variant::_Variant_storage<false, T...>::_M_valid()):
4133         Check __never_valueless<T...>().
4134         (variant::emplace): Only perform non-throwing move assignments
4135         for never-valueless alternatives if the variant has a move assignment
4136         operator.
4137         * testsuite/20_util/variant/compile.cc: Check that never-valueless
4138         types can be emplaced into non-assignable variants.
4139         * testsuite/20_util/variant/run.cc: Check that never-valueless types
4140         don't get copied when emplaced into non-assignable variants.
4141
4142         * include/std/variant (__detail::__variant::__ref_cast): Remove
4143         unused function.
4144         (__detail::__variant::_Uninitialized::_M_get)
4145         (__detail::__variant::__get)
4146         (__gen_vtable_impl::__element_by_index_or_cookie): Add noexcept.
4147
4148 2019-04-21  Iain Sandoe  <iain@sandoe.co.uk>
4149
4150         * testsuite/17_intro/headers/c++1998/charset.cc: Skip for Darwin8
4151         to Darwin10.
4152         * testsuite/17_intro/headers/c++2011/charset.cc: Likewise.
4153         * testsuite/17_intro/headers/c++2014/charset.cc: Likewise.
4154         * testsuite/17_intro/headers/c++2017/charset.cc: Likewise.
4155         * testsuite/17_intro/headers/c++2020/charset.cc: Likewise.
4156
4157 2019-04-20  Thomas Rodgers <trodgers@redhat.com>
4158
4159         Delegate PSTL configuration to pstl/pstl_config.h
4160
4161         * include/bits/c++config: Remove explicit PSTL configuration
4162         macros and use definitions from <pstl/pstl_config.h>.
4163
4164 2019-04-20  Thomas Rodgers <trodgers@redhat.com>
4165
4166         Cleanup algorithm implementations
4167         * include/pstl/glue_algorithm_impl.h (stable_sort): Forward
4168         execution policy.
4169         (mismatch): Forward execution policy.
4170         (equal): Qualify call to std::equal().
4171         (partial_sort): Forward execution policy.
4172         (inplace_merge): Forward execution policy.
4173
4174 2019-04-19  Thomas Rodgers <trodgers@redhat.com>
4175
4176         Improve implementation of parallel equal()
4177         * include/pstl/algorithm_impl.h
4178         (__internal::__brick_equal): use "4 iterator" version of
4179         std::equal().
4180         (__internal::__brick_equal): use simd for random access
4181         iterators on unsequenced execution policies.
4182         (__internal::__pattern_equal): add "4 iterator" version
4183         (__internal::__pattern_equal): dispatch to simd __brick_equal
4184         for vector-only execution policies.
4185         (__internal::__pattern_equal): dispatch to __parallel_or for
4186         parallel execution policies.
4187         * include/pstl/glue_algorithm_impl.h
4188         (std::equal): dispatch to "4 iterator" version of
4189         __internal::__pattern_equal().
4190
4191 2019-04-17  Jonathan Wakely  <jwakely@redhat.com>
4192
4193         PR libstdc++/90105
4194         * include/bits/forward_list.h (operator==): Do not use operator!= to
4195         compare elements.
4196         (forward_list<T, A>::sort(Comp)): When elements are equal take the one
4197         earlier in the list, so that sort is stable.
4198         * testsuite/23_containers/forward_list/operations/90105.cc: New test.
4199         * testsuite/23_containers/forward_list/comparable.cc: Test with
4200         types that meet the minimum EqualityComparable and LessThanComparable
4201         requirements. Remove irrelevant comment.
4202
4203         * include/std/variant (__detail::__variant::_Traits::_S_copy_assign):
4204         Do not depend on whether all alternative types are move constructible.
4205         (__detail::__variant::_Copy_assign_base::operator=): Remove cv-quals
4206         from the operand when deciding whether to perform the assignment.
4207         * testsuite/20_util/variant/compile.cc (DeletedMoves): Define type
4208         with deleted move constructor and deleted move assignment operator.
4209         (default_ctor, copy_ctor, move_ctor, copy_assign, move_assign): Check
4210         behaviour of variants with DeletedMoves as an alternative.
4211         * testsuite/20_util/variant/run.cc (DeletedMoves): Define same type.
4212         (move_ctor, move_assign): Check that moving a variant with a
4213         DeletedMoves alternative falls back to copying instead of moving.
4214
4215         * testsuite/20_util/variant/compile.cc: Remove empty string literals
4216         from static_assert declarations.
4217
4218         * testsuite/20_util/variant/compile.cc (MoveCtorOnly): Fix type to
4219         actually match its name.
4220         (MoveCtorAndSwapOnly): Define new type that adds swap to MoveCtorOnly.
4221         (test_swap()): Fix result for MoveCtorOnly and check
4222         MoveCtorAndSwapOnly.
4223
4224         * include/std/optional (optional::value_or(U&&) &&): Add missing
4225         constexpr specifier.
4226         * testsuite/20_util/optional/constexpr/observers/4.cc: Check value_or
4227         for disengaged optionals and rvalue optionals.
4228         * testsuite/20_util/optional/observers/4.cc: Likewise.
4229
4230 2019-04-12  Thomas Rodgers  <trodgers@redhat.com>
4231
4232         * include/pstl/algorithm_impl.h: Uglify identfiers.
4233         * include/pstl/numeric_impl.h:  Uglify identfiers.
4234         * include/pstl/parallel_backend_tbb.h: Uglify identfiers.
4235
4236 2019-04-11  Thomas Rodgers  <trodgers@redhat.com>
4237
4238         * include/bits/c++config:
4239         Add definition for __PSTL_ASSERT.
4240         Add definition for __PSTL_ASSERT_MSG.
4241         * include/pstl/algorithm_impl.h: Replace use of assert().
4242         * include/pstl/numeric_impl.h: Replace use of assert().
4243         * include/pstl/parallel_backend_tbb.h:
4244         Replace use of assert().
4245         Replace use of __TBB_ASSERT().
4246         * include/pstl/parallel_backend_utils.h: Replace use of assert().
4247
4248 2019-04-11  Jonathan Wakely  <jwakely@redhat.com>
4249
4250         PR libstdc++/90046
4251         * src/c++17/memory_resource.cc
4252         (monotonic_buffer_resource::_Chunk::allocate): Increase alignment if
4253         needed to allow placing a _Chunk at the end of the buffer.
4254         (monotonic_buffer_resource::_M_new_buffer): Remove static_assert.
4255
4256 2019-04-10  Jonathan Wakely  <jwakely@redhat.com>
4257
4258         * doc/xml/faq.xml: Add information about emergency EH pool.
4259         * doc/xml/manual/debug.xml: Update list of memory debugging tools.
4260         Move outdated information on mt_allocator to a separate section.
4261         * doc/xml/manual/evolution.xml: Clarify that GLIBCXX_FORCE_NEW
4262         doesn't affect the default allocator.
4263
4264         * testsuite/lib/libstdc++.exp (check_v3_target_parallel_mode): Fix
4265         typo.
4266
4267         PR libstdc++/89851
4268         * testsuite/20_util/variant/89851.cc: New test.
4269
4270 2019-04-09  Jonathan Wakely  <jwakely@redhat.com>
4271
4272         * include/std/variant: Adjust whitespace. Add comments.
4273         (_Multi_array): Leave primary template undefined.
4274         (_Multi_array<_Tp>): Define partial specialization for base case of
4275         recursion.
4276         (__gen_vtable_impl, __gen_vtable): Remove redundant && from type
4277         which is always a reference.
4278         (__gen_vtable::_S_apply()): Remove function, inline body into
4279         default member initializer.
4280         * testsuite/20_util/variant/visit.cc: Test with noncopyable types.
4281
4282         * include/std/variant (__variant_idx_cookie): Add member type.
4283         (__visitor_result_type): Remove.
4284         (__do_visit): Use invoke_result instead of __visitor_result_type.
4285         * testsuite/20_util/variant/visit.cc: New test.
4286
4287         PR libstdc++/90008
4288         * include/std/variant (_VARIANT_RELATION_FUNCTION_TEMPLATE): Remove
4289         unused capture.
4290         * testsuite/20_util/variant/90008.cc: New test.
4291
4292 2019-04-09  Thomas Rodgers  <trodgers@redhat.com>
4293
4294         * include/pstl/algorithm_impl.h: Add namespace qualification.
4295         * include/pstl/execution_defs.h: Add namespace qualification.
4296         * include/pstl/execution_impl.h: Add namespace qualification.
4297         * include/pstl/numeric_impl.h: Add namespace qualification.
4298         * include/pstl/parallel_backend_tbb.h: Add namespace qualification.
4299         * include/pstl/unseq_backend_simd.h: Add namespace qualification.
4300         * include/pstl/parallel_backend_utils.h: Include <cassert>.
4301
4302 2019-04-08  Ville Voutilainen  <ville.voutilainen@gmail.com>
4303
4304         Fix visit<R> for variant.
4305         * include/std/variant (__do_visit): Add a template parameter
4306         for enforcing same return types for visit.
4307         (__gen_vtable_impl): Likewise.
4308         (_S_apply_single_alt): Adjust.
4309         (__visit_invoke_impl): New. Handle casting to void.
4310         (__do_visit_invoke): New. Enforces same return types.
4311         (__do_visit_invoke_r): New. Converts return types.
4312         (__visit_invoke): Adjust.
4313         (__gen_vtable):  Add a template parameter for enforcing
4314         same return types for visit.
4315         * testsuite/20_util/variant/visit_r.cc: Add a test for a visitor with
4316         different return types.
4317         * testsuite/20_util/variant/visit_neg.cc: New. Ensures that
4318         visitors with different return types don't accidentally
4319         compile with regular visitation.
4320
4321 2019-04-08  Christophe Lyon  <christophe.lyon@linaro.org>
4322
4323         * testsuite/27_io/filesystem/iterators/caching.cc: Add
4324         dg-require-filesystem-ts.
4325
4326 2019-04-05  Jonathan Wakely  <jwakely@redhat.com>
4327
4328         * doc/xml/manual/status_cxx2020.xml: Update status.
4329         * include/std/variant (visit<R>): Define for C++2a (P0655R1).
4330         * testsuite/20_util/variant/visit_r.cc: New test.
4331
4332         * include/bits/fs_dir.h (directory_iterator::operator*)
4333         (directory_iterator::operator->): Add noexcept.
4334         (operator==, operator!=): Replace namespace-scope equality operators
4335         for directory iterators with hidden friends.
4336
4337         PR libstdc++/89986
4338         * config/abi/pre/gnu.ver: Add missing exports.
4339         * testsuite/27_io/filesystem/iterators/directory_iterator.cc: Test
4340         increment member.
4341
4342         * config/abi/pre/gnu.ver: Export new symbols.
4343         * include/bits/fs_dir.h (recursive_directory_iterator::options())
4344         (recursive_directory_iterator::recursion_pending())
4345         (recursive_directory_iterator::disable_recursion_pending()): Remove
4346         inline definitions. Make noexcept.
4347         (recursive_directory_iterator::depth())
4348         (recursive_directory_iterator::operator*())
4349         (recursive_directory_iterator::operator->()): Make noexcept.
4350         (recursive_directory_iterator::_M_options)
4351         (recursive_directory_iterator::_M_pending): Remove data members.
4352         * src/c++17/fs_path.cc (_Dir_stack): Add constructor and data members.
4353         (recursive_directory_iterator::recursive_directory_iterator): Remove
4354         ctor-initializer. Use new constructor for _Dir_stack.
4355         (recursive_directory_iterator::options())
4356         (recursive_directory_iterator::recursion_pending())
4357         (recursive_directory_iterator::disable_recursion_pending()): Add
4358         non-inline definitions.
4359         (recursive_directory_iterator::depth()): Make noexcept.
4360         (recursive_directory_iterator::increment(error_code&))
4361         (recursive_directory_iterator::pop(error_code&)): Adjust to new
4362         location of options and recursion_pending members.
4363         * testsuite/27_io/filesystem/iterators/recursion_pending.cc: New test.
4364         * testsuite/util/testsuite_fs.h (__gnu_test::scoped_file): Add
4365         user-declared move constructor and assignment operator, to make the
4366         type move-only.
4367
4368         * src/c++17/fs_dir.cc (_Dir::advance(bool, error_code&)): Handle
4369         d_type == DT_UNKNOWN immediately.
4370         (_Dir::should_recurse(bool, error_code&)): Remove file_type::unknown
4371         handling here.
4372         * testsuite/27_io/filesystem/iterators/caching.cc: New test.
4373
4374         * include/bits/fs_path.h (path::operator=(path&&)): Check for self
4375         assignment.
4376         * src/c++17/fs_path.cc (path::operator=(const path&)): Likewise.
4377         * testsuite/27_io/filesystem/path/assign/copy.cc: Test self
4378         assignment.
4379
4380         PR libstdc++/87431 (again)
4381         * include/bits/basic_string.h (__variant::_Never_valueless_alt):
4382         Define partial specialization for basic_string.
4383         * include/bits/shared_ptr.h (_Never_valueless_alt): Likewise for
4384         shared_ptr and weak_ptr.
4385         * include/bits/std_function.h (_Never_valueless_alt): Likewise for
4386         function.
4387         * include/bits/stl_vector.h (_Never_valueless_alt): Likewise for
4388         vector.
4389         * include/bits/unique_ptr.h (_Never_valueless_alt): Likewise for
4390         unique_ptr.
4391         * include/debug/vector (_Never_valueless_alt): Likewise for debug
4392         vector.
4393         * include/std/any (_Never_valueless_alt): Define explicit
4394         specialization for any.
4395         * include/std/variant (_Never_valueless_alt): Define primary template.
4396         (__never_valueless): Use _Never_valueless_alt instead of
4397         is_trivially_copyable.
4398         (variant::emplace<N>(Args&&...)): Add special case for non-throwing
4399         initializations to avoid try-catch overhead. Add special case for
4400         scalars produced by potentially-throwing conversions. Use
4401         _Never_valueless_alt instead of is_trivially_copyable for the
4402         remaining strong exception-safety cases.
4403         (variant::emplace<N>(initializer_list<U>, Args&&...)): Likewise.
4404         * testsuite/20_util/variant/87431.cc: Run both test functions.
4405         * testsuite/20_util/variant/exception_safety.cc: New test.
4406         * testsuite/20_util/variant/run.cc: Use pmr::string instead of string,
4407         so the variant becomes valueless.
4408
4409 2019-04-03  Jonathan Wakely  <jwakely@redhat.com>
4410
4411         PR libstdc++/85184
4412         * include/std/variant (_Copy_assign_base, _Move_assign_base, variant):
4413         Remove assertions.
4414         (variant::emplace<_Tp>): Return result of emplace<N> directly.
4415
4416         * include/std/string (__hash_string_base): New class template defining
4417         operator() for hashing strings.
4418         (hash<pmr::string>, hash<pmr::u8string>, hash<pmr::u16string>)
4419         (hash<pmr::u32string>, hash<pmr::wstring>): Define for C++17.
4420         * testsuite/21_strings/basic_string/hash/hash.cc: New test.
4421         * testsuite/21_strings/basic_string/hash/hash_char8_t.cc: New test.
4422
4423 2019-04-01  Ville Voutilainen  <ville.voutilainen@gmail.com>
4424
4425         Use single-visitation in variant assignment and swap and relops.
4426         Also use indices instead of types when checking whether
4427         variants hold the same thing.
4428         * include/std/variant (__do_visit): Add a template parameter
4429         for index visitation, invoke with indices if index visitation
4430         is used.
4431         (__variant_idx_cookie): New.
4432         (__visit_with_index): Likewise.
4433         (_Copy_assign_base::operator=): Do single-visitation with
4434         an index visitor.
4435         (_Move_assign_base::operator=): Likewise.
4436         (_Extra_visit_slot_needed): Adjust.
4437         (__visit_invoke): Call with indices if it's an index visitor.
4438         (relops): Do single-visitation with an index visitor.
4439         (swap): Likewise.
4440         (__visitor_result_type): New.
4441
4442 2019-03-30  Eric Botcazou  <ebotcazou@adacore.com>
4443
4444         * src/c++17/fs_ops.cc (fs::permissions): Use std::errc::not_supported.
4445
4446 2019-03-28  Ville Voutilainen  <ville.voutilainen@gmail.com>
4447
4448         Don't revisit a variant we are already visiting.
4449         * include/std/variant (__variant_construct_single): New.
4450         (__variant_construct): Use it.
4451         (_M_destructive_move): Likewise.
4452         (_M_destructive_copy): Likewise.
4453         (_Copy_assign_base::operator=): Adjust.
4454         (_Move_assign_base::operator=): Likewise.
4455         (swap): Likewise.
4456
4457 2019-03-26  Jonathan Wakely  <jwakely@redhat.com>
4458
4459         PR libstdc++/85965
4460         * include/bits/hashtable.h (_Hashtable): Move static assertions to
4461         destructor so they are not evaluated until the _Key type is complete.
4462         * include/bits/stl_tree.h (_Rb_tree): Likewise.
4463         * testsuite/23_containers/set/85965.cc: New test.
4464         * testsuite/23_containers/unordered_set/85965.cc: New test.
4465         * testsuite/23_containers/map/48101_neg.cc: Replace "here" errors
4466         with regexp matching the corresponding _Rb_tree specialization.
4467         * testsuite/23_containers/multimap/48101_neg.cc: Likewise.
4468         * testsuite/23_containers/multiset/48101_neg.cc: Remove "here" error.
4469         * testsuite/23_containers/set/48101_neg.cc: Likewise.
4470         * testsuite/23_containers/unordered_map/48101_neg.cc: Likewise.
4471         * testsuite/23_containers/unordered_multimap/48101_neg.cc: Likewise.
4472         * testsuite/23_containers/unordered_multiset/48101_neg.cc: Likewise.
4473         * testsuite/23_containers/unordered_set/48101_neg.cc: Likewise.
4474
4475 2019-03-26  Ville Voutilainen  <ville.voutilainen@gmail.com>
4476
4477         PR libstdc++/89825
4478         Fix based on a suggestion by Antony Polukhin.
4479         * include/std/variant (__never_valueless): New.
4480         (_M_valid): Use it.
4481         (_Extra_visit_slot_needed): New.
4482         (_Multi_array): Use it.
4483         (_S_apply_all_alts): Likewise.
4484
4485 2019-03-26  Ville Voutilainen  <ville.voutilainen@gmail.com>
4486
4487         PR libstdc++/89824
4488         Fix based on a suggestion by Antony Polukhin.
4489         * include/std/variant (__gen_vtable): Don't reserve an
4490         additional table slot, _Multi_array already does that.
4491
4492 2019-03-26  Ville Voutilainen  <ville.voutilainen@gmail.com>
4493
4494         PR libstdc++/89816
4495         Fix based on a suggestion by Antony Polukhin.
4496         * include/std/variant (__variant_construct): Capture a pointer
4497         to the storage and visit just one variant.
4498
4499 2019-03-22  Jonathan Wakely  <jwakely@redhat.com>
4500
4501         * doc/xml/manual/backwards_compatibility.xml: Remove link to
4502         Doxygen-generated pages with unstable URL.
4503         * doc/xml/manual/concurrency_extensions.xml: Likewise.
4504         * doc/xml/manual/extensions.xml: Likewise.
4505         * doc/xml/manual/parallel_mode.xml: Likewise.
4506         * doc/xml/manual/support.xml: Likewise.
4507
4508         * include/bits/stl_algobase.h (__lg): Do arithmetic on type int to
4509         avoid -Wconversion warnings.
4510
4511 2019-03-21  Thomas Rodgers  <trodgers@redhat.com>
4512
4513         * include/Makefile.am (std_header): Add ${std_srcdir}/execution.
4514         (pstl_srcdir, pstl_builddir, pstl_headers): New variables.
4515         (allstamped): Add stamp-pstl.
4516         (install-headers): Add ptsl_builddir.
4517         * include/Makefile.in: Regenerate.
4518         * include/bits/c++config: Add pstl configuration.
4519         * include/pstl/LICENSE.txt: New file.
4520         * include/pstl/algorithm_fwd.h: New file.
4521         * include/pstl/algorithm_impl.h: New file.
4522         * include/pstl/execution_defs.h: New file.
4523         * include/pstl/execution_impl.h: New file.
4524         * include/pstl/glue_algorithm_defs.h: New file.
4525         * include/pstl/glue_algorithm_impl.h: New file.
4526         * include/pstl/glue_execution_defs.h: New file.
4527         * include/pstl/glue_memory_defs.h: New file.
4528         * include/pstl/glue_memory_impl.h: New file.
4529         * include/pstl/glue_numeric_defs.h: New file.
4530         * include/pstl/glue_numeric_impl.h: New file.
4531         * include/pstl/memory_impl.h: New file.
4532         * include/pstl/numeric_fwd.h: New file.
4533         * include/pstl/numeric_impl.h: New file.
4534         * include/pstl/parallel_backend.h: New file.
4535         * include/pstl/parallel_backend_tbb.h: New file.
4536         * include/pstl/parallel_backend_utils.h: New file.
4537         * include/pstl/parallel_impl.h: New file.
4538         * include/pstl/pstl_config.h: New file.
4539         * include/pstl/unseq_backend_simd.h: New file.
4540         * include/pstl/utils.h: New file.
4541         * include/std/algorithm: Include parallel algorithm implementations.
4542         * include/std/execution: New file.
4543         * include/std/memory: Include parallel algorithm implementations.
4544         * include/std/numeric: Include parallel algorithm implementations.
4545         * include/std/version: Add parallel algorithms feature test macro.
4546         * testsuite/util/pstl/pstl_test_config.h: New file.
4547         * testsuite/util/pstl/test_utils.h: New file.
4548         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc: New file.
4549         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc: New file.
4550         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_fill_destroy.cc: New file.
4551         * testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: New file.
4552         * testsuite/25_algorithms/pstl/alg_merge/merge.cc: New file.
4553         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc: New file.
4554         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc: New file.
4555         * testsuite/25_algorithms/pstl/alg_modifying_operations/fill.cc: New file.
4556         * testsuite/25_algorithms/pstl/alg_modifying_operations/generate.cc: New file.
4557         * testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc: New file.
4558         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc: New file.
4559         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc: New file.
4560         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc: New file.
4561         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove_copy.cc: New file.
4562         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace.cc: New file.
4563         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc: New file.
4564         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc: New file.
4565         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc: New file.
4566         * testsuite/25_algorithms/pstl/alg_modifying_operations/swap_ranges.cc: New file.
4567         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_binary.cc: New file.
4568         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_unary.cc: New file.
4569         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc: New file.
4570         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc: New file.
4571         * testsuite/25_algorithms/pstl/alg_nonmodifying/adjacent_find.cc: New file.
4572         * testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc: New file.
4573         * testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc: New file.
4574         * testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc: New file.
4575         * testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc: New file.
4576         * testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc: New file.
4577         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc: New file.
4578         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc: New file.
4579         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc: New file.
4580         * testsuite/25_algorithms/pstl/alg_nonmodifying/for_each.cc: New file.
4581         * testsuite/25_algorithms/pstl/alg_nonmodifying/mismatch.cc: New file.
4582         * testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc: New file.
4583         * testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc: New file.
4584         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc: New file.
4585         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc: New file.
4586         * testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc: New file.
4587         * testsuite/25_algorithms/pstl/alg_sorting/includes.cc: New file.
4588         * testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: New file.
4589         * testsuite/25_algorithms/pstl/alg_sorting/is_sorted.cc: New file.
4590         * testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc: New file.
4591         * testsuite/25_algorithms/pstl/alg_sorting/minmax_element.cc: New file.
4592         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc: New file.
4593         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc: New file.
4594         * testsuite/25_algorithms/pstl/alg_sorting/set.cc: New file.
4595         * testsuite/25_algorithms/pstl/alg_sorting/sort.cc: New file.
4596         * testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc: New file.
4597         * testsuite/26_numerics/pstl/numeric_ops/reduce.cc: New file.
4598         * testsuite/26_numerics/pstl/numeric_ops/scan.cc: New file.
4599         * testsuite/26_numerics/pstl/numeric_ops/transform_reduce.cc: New file.
4600         * testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc: New file.
4601         * testsuite/testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc: New file.
4602         * testsuite/testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc: New file.
4603         * testsuite/testsuite/20_util/specialized_algorithms/pstl/uninitialized_fill_destroy.cc: New file.
4604         * testsuite/testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: New file.
4605         * testsuite/testsuite/25_algorithms/pstl/alg_merge/merge.cc: New file.
4606         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc: New file.
4607         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc: New file.
4608         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/fill.cc: New file.
4609         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/generate.cc: New file.
4610         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc: New file.
4611         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc: New file.
4612         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc: New file.
4613         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc: New file.
4614         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/remove_copy.cc: New file.
4615         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/replace.cc: New file.
4616         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc: New file.
4617         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc: New file.
4618         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc: New file.
4619         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/swap_ranges.cc: New file.
4620         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/transform_binary.cc: New file.
4621         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/transform_unary.cc: New file.
4622         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc: New file.
4623         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc: New file.
4624         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/adjacent_find.cc: New file.
4625         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc: New file.
4626         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc: New file.
4627         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc: New file.
4628         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc: New file.
4629         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc: New file.
4630         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc: New file.
4631         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc: New file.
4632         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc: New file.
4633         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/for_each.cc: New file.
4634         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/mismatch.cc: New file.
4635         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc: New file.
4636         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc: New file.
4637         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc: New file.
4638         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc: New file.
4639         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc: New file.
4640         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/includes.cc: New file.
4641         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: New file.
4642         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/is_sorted.cc: New file.
4643         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc: New file.
4644         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/minmax_element.cc: New file.
4645         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc: New file.
4646         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc: New file.
4647         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/set.cc: New file.
4648         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/sort.cc: New file.
4649         * testsuite/testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc: New file.
4650         * testsuite/testsuite/26_numerics/pstl/numeric_ops/reduce.cc: New file.
4651         * testsuite/testsuite/26_numerics/pstl/numeric_ops/scan.cc: New file.
4652         * testsuite/testsuite/26_numerics/pstl/numeric_ops/transform_reduce.cc: New file.
4653         * testsuite/testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc: New file.
4654
4655 2019-03-21  Jonathan Wakely  <jwakely@redhat.com>
4656
4657         * include/c_compatibility/math.h [!__STDCPP_WANT_MATH_SPEC_FUNCS__]
4658         (assoc_laguerre, assoc_laguerref, assoc_laguerrel, assoc_legendre)
4659         (assoc_legendref, assoc_legendrel, beta, betaf, betal, comp_ellint_1)
4660         (comp_ellint_1f, comp_ellint_1l, comp_ellint_2, comp_ellint_2f)
4661         (comp_ellint_2l, comp_ellint_3, comp_ellint_3f, comp_ellint_3l)
4662         (cyl_bessel_i, cyl_bessel_if, cyl_bessel_il, cyl_bessel_j)
4663         (cyl_bessel_jf, cyl_bessel_jl, cyl_bessel_k, cyl_bessel_kf)
4664         (cyl_bessel_kl, cyl_neumann, cyl_neumannf, cyl_neumannl, ellint_1)
4665         (ellint_1f, ellint_1l, ellint_2, ellint_2f, ellint_2l, ellint_3)
4666         (ellint_3f, ellint_3l, expint, expintf, expintl, hermite, hermitef)
4667         (hermitel, laguerre, laguerref, laguerrel, legendre, legendref)
4668         (legendrel, riemann_zeta, riemann_zetaf, riemann_zetal, sph_bessel)
4669         (sph_besself, sph_bessell, sph_legendre, sph_legendref, sph_legendrel)
4670         (sph_neumann, sph_neumannf, sph_neumannl): Only add using-declarations
4671         when the special functions IS is enabled, not for C++17.
4672         * testsuite/26_numerics/headers/cmath/functions_global_c++17.cc:
4673         Replace with ...
4674         * testsuite/26_numerics/headers/cmath/functions_global.cc: New test,
4675         without checks for special functions in C++17.
4676         * testsuite/26_numerics/headers/cmath/special_functions_global.cc:
4677         New test.
4678
4679         PR libstdc++/88066
4680         * include/backward/hash_map: Use <> for includes not "".
4681         * include/backward/hash_set: Likewise.
4682         * include/backward/strstream: Likewise.
4683         * include/tr1/bessel_function.tcc: Likewise.
4684         * include/tr1/exp_integral.tcc: Likewise.
4685         * include/tr1/legendre_function.tcc: Likewise.
4686         * include/tr1/modified_bessel_func.tcc: Likewise.
4687         * include/tr1/riemann_zeta.tcc: Likewise.
4688
4689 2019-03-19  Jonathan Wakely  <jwakely@redhat.com>
4690
4691         * doc/xml/manual/allocator.xml: Link to table documenting evolution
4692         of extension allocators.
4693         * doc/xml/manual/evolution.xml: Use angle brackets for header names.
4694         Document new headers in 7.2, 8.1 and 9.1 releases.
4695         * doc/xml/manual/using.xml: Adjust link target for new_allocator.
4696         * doc/html/*: Regenerate.
4697
4698 2019-03-12  John David Anglin  <dave.anglin@bell.net>
4699
4700         PR libstdc++/89461
4701         * testsuite/lib/libstdc++.exp: Locate libatomic.
4702         * testsuite/lib/dg-options.exp (add_options_for_libatomic): New.
4703         * testsuite/20_util/shared_ptr/thread/default_weaktoshared.cc: Add
4704         libatomic options.
4705         * testsuite/20_util/shared_ptr/thread/mutex_weaktoshared.cc: Likewise.
4706         * testsuite/experimental/net/timer/waitable/cons.cc: Likewise.
4707         * testsuite/experimental/net/timer/waitable/dest.cc: Likewise.
4708         * testsuite/experimental/net/timer/waitable/ops.cc: Likewise.
4709
4710 2019-03-11  Jonathan Wakely  <jwakely@redhat.com>
4711
4712         PR libstdc++/89460
4713         * configure.ac: Check for sockatmark.
4714         * crossconfig.m4: Check for sockatmark.
4715         * config.h.in: Regenerate.
4716         * configure: Regenerate.
4717         * include/experimental/internet (address_v4::_S_hton): Rename
4718         overloaded functions to _S_hton_16 and _S_ntoh_16.
4719         (address_v4::_S_ntoh): Rename to _S_ntoh_16 and _S_ntoh_32.
4720         (basic_endpoint): Adjust calls to _S_hton and _S_ntoh.
4721         * include/experimental/socket (basic_socket::at_mark): Check
4722         _GLIBCXX_HAVE_SOCKATMARK.
4723
4724         * testsuite/29_atomics/atomic_flag/test_and_set/explicit-hle.cc: Use
4725         const variables instead of macros.
4726
4727         PR libstdc++/89629
4728         * libsupc++/hash_bytes.cc [__SIZEOF_SIZE_T__ == 8] (_Hash_bytes):
4729         Use correct type for len_aligned.
4730         * testsuite/20_util/hash/89629.cc: New test.
4731
4732 2019-03-11  Jakub Jelinek  <jakub@redhat.com>
4733
4734         PR libstdc++/89641
4735         * include/std/atomic (atomic<T>::store, atomic<T>::load,
4736         atomic<T>::exchange, atomic<T>::compare_exchange_weak,
4737         atomic<T>::compare_exchange_strong): Cast __m or __s and __f to int.
4738         * include/bits/atomic_base.h (__atomic_base<T>::operator++,
4739         __atomic_base<T>::operator--, __atomic_base<T>::operator+=,
4740         __atomic_base<T>::operator-=, __atomic_base<T>::operator&=,
4741         __atomic_base<T>::operator|=, __atomic_base<T>::operator^=,
4742         __atomic_base<T*>::operator++, __atomic_base<T*>::operator--,
4743         __atomic_base<T*>::operator+=, __atomic_base<T*>::operator-=): Cast
4744         memory_order_seq_cst to int.
4745
4746 2019-03-08  Jonathan Wakely  <jwakely@redhat.com>
4747
4748         * doc/xml/manual/using.xml: Use link element instead of xref.
4749         * doc/html/*: Regenerate.
4750
4751         * include/bits/fs_path.h (path::format): Add fixed underlying type.
4752
4753 2019-03-08  François Dumont  <fdumont@gcc.gnu.org>
4754
4755         PR libstdc++/89477
4756         * include/debug/map.h (map): Use _RequireNotAllocator to constrain
4757         parameters in deduction guides.
4758         * include/debug/multimap.h (multimap): Likewise.
4759         * include/debug/set.h (multimap): Likewise.
4760         * include/debug/multiset.h (multimap): Likewise.
4761         * include/debug/unordered_map (unordered_map): Likewise.
4762         (unordered_multimap): Likewise.
4763         * include/debug/unordered_set (unordered_set): Likewise.
4764         (unordered_multiset): Likewise.
4765
4766         PR libstdc++/89608
4767         * include/debug/unordered_map (unordered_map<>::_M_check_rehashed):
4768         Invalidate all iterators in case of rehash.
4769         (unordered_multimap<>::_M_check_rehashed): Likewise.
4770         * include/debug/unordered_set
4771         (unordered_set<>::_M_check_rehashed): Likewise.
4772         (unordered_multiset<>::_M_check_rehashed): Likewise.
4773         * testsuite/23_containers/unordered_set/debug/89608_neg.cc: New.
4774
4775 2019-03-07  Andreas Schwab  <schwab@suse.de>
4776
4777         * config/abi/post/riscv64-linux-gnu: New directory.
4778         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: New file.
4779
4780 2019-03-07  Jonathan Wakely  <jwakely@redhat.com>
4781
4782         * testsuite/20_util/function_objects/bind_front/1.cc: Change from
4783         compile test to run. Fix typo.
4784
4785         * doc/xml/manual/status_cxx2020.xml: Update C++20 status.
4786         * doc/html/*: Regenerate.
4787
4788         P0356R5 Simplified partial function application
4789         * include/std/functional [C++20] (_Bind_front, _Bind_front_t): Define
4790         helpers for bind_front.
4791         (bind_front, __cpp_lib_bind_front): Define.
4792         * testsuite/20_util/function_objects/bind_front/1.cc: New test.
4793
4794 2019-03-06  Jonathan Wakely  <jwakely@redhat.com>
4795
4796         * include/std/type_traits (__cpp_lib_bounded_array_traits): Define.
4797         * include/std/version (__cpp_lib_bounded_array_traits): Likewise.
4798         * testsuite/20_util/is_bounded_array/value.cc: Check for macro.
4799         * testsuite/20_util/is_unbounded_array/value.cc: Likewise.
4800
4801 2019-03-06  Edward Smith-Rowland  <3dw4rd@verizon.net>
4802
4803         PR libstdc++/86655 - std::assoc_legendre should not constrain
4804         the value of m (or x).
4805         * include/tr1/legendre_function.tcc (__assoc_legendre_p,
4806         __sph_legendre): If degree > order Don't throw, return 0.
4807         (__legendre_p, __assoc_legendre_p): Don't constrain x either.
4808         * testsuite/special_functions/02_assoc_legendre/pr86655.cc: New test.
4809         * testsuite/special_functions/20_sph_legendre/pr86655.cc: New test.
4810         * testsuite/tr1/5_numerical_facilities/special_functions/
4811         02_assoc_legendre/pr86655.cc: New test.
4812         * testsuite/tr1/5_numerical_facilities/special_functions/
4813         22_sph_legendre/pr86655.cc: New test.
4814
4815 2019-03-06  Ville Voutilainen  <ville.voutilainen@gmail.com>
4816
4817         Rewrite variant.
4818         Also PR libstdc++/85517
4819         * include/std/variant (__do_visit): New.
4820         (__variant_cast): Likewise.
4821         (__variant_cookie): Likewise.
4822         (__erased_*): Remove.
4823         (_Variant_storage::_S_vtable): Likewise.
4824         (_Variant_storage::__M_reset_impl): Adjust to use __do_visit.
4825         (_Variant_storage::__M_reset): Adjust.
4826         (__variant_construct): New.
4827         (_Copy_ctor_base(const _Copy_ctor_base&)): Adjust to use
4828         __variant_construct.
4829         (_Move_ctor_base(_Move_ctor_base&&)): Likewise.
4830         (_Move_ctor_base::__M_destructive_copy): New.
4831         (_Move_ctor_base::__M_destructive_move): Adjust to use
4832         __variant_construct.
4833         (_Copy_assign_base::operator=): Adjust to use __do_visit.
4834         (_Copy_assign_alias): Adjust to check both copy assignment
4835         and copy construction for triviality.
4836         (_Move_assign_base::operator=): Adjust to use __do_visit.
4837         (_Multi_array): Add support for visitors that accept and return
4838         a __variant_cookie.
4839         (__gen_vtable_impl::_S_apply_all_alts): Likewise.
4840         (__gen_vtable_impl::_S_apply_single_alt): Likewise.
4841         (__gen_vtable_impl::__element_by_index_or_cookie): New. Generate
4842         a __variant_cookie temporary for a variant that is valueless and..
4843         (__gen_vtable_impl::__visit_invoke): ..adjust here.
4844         (__gen_vtable::_Array_type): Conditionally make space for
4845         the __variant_cookie visitor case.
4846         (__variant_construct_by_index): New.
4847         (get_if): Adjust to use std::addressof.
4848         (relops): Adjust to use __do_visit.
4849         (variant): Add __variant_cast and __variant_construct_by_index
4850         as friends.
4851         (variant::emplace): Use _M_reset() and __variant_construct_by_index
4852         instead of self-destruction.
4853         (variant::swap): Adjust to use __do_visit.
4854         (visit): Reimplement in terms of __do_visit.
4855         (__variant_hash_call_base_impl::operator()): Adjust to use __do_visit.
4856         * testsuite/20_util/variant/compile.cc: Adjust.
4857         * testsuite/20_util/variant/run.cc: Likewise.
4858
4859 2019-03-06  Jonathan Wakely  <jwakely@redhat.com>
4860
4861         * include/bits/c++config.h (_cpp_lib_char8_t): Add L suffix to
4862         constant.
4863         * testsuite/experimental/feat-char8_t.cc: Likewise.
4864
4865          * include/std/type_traits [C++20] (is_bounded_array)
4866          (is_unbounded_array, is_bounded_array_v, is_unbounded_array_v):
4867          Define.
4868          * testsuite/20_util/is_bounded_array/requirements/
4869          explicit_instantiation.cc: New test.
4870          * testsuite/20_util/is_bounded_array/requirements/typedefs.cc: New
4871          test.
4872          * testsuite/20_util/is_bounded_array/value.cc: New test.
4873          * testsuite/20_util/is_unbounded_array/requirements/
4874          explicit_instantiation.cc: New test.
4875          * testsuite/20_util/is_unbounded_array/requirements/typedefs.cc: New
4876          * test.
4877          * testsuite/20_util/is_unbounded_array/value.cc: New test.
4878
4879         * include/bits/ptr_traits.h [C++20] (pointer_traits<T*>::pointer_to):
4880         Add constexpr.
4881         * testsuite/20_util/pointer_traits/pointer_to_constexpr.cc: New test.
4882
4883 2019-03-05  Jonathan Wakely  <jwakely@redhat.com>
4884
4885         * include/c_compatibility/math.h [C++20] (lerp): Add using
4886         declaration.
4887         * include/c_global/cmath [C++20] (__cpp_lib_interpolate): Define.
4888         (__lerp): Define function template to implement lerp.
4889         (lerp(float, float, float), lerp(double, double, double))
4890         (lerp(long double, long double, long double)): Define for C++20.
4891         * include/std/numeric [C++20] (__cpp_lib_interpolate): Define.
4892         (midpoint(T, T), midpoint(T*, T*)): Define.
4893         * include/std::version [C++20] (__cpp_lib_interpolate): Define.
4894         * testsuite/26_numerics/lerp.cc: New test.
4895         * testsuite/26_numerics/midpoint/floating.cc: New test.
4896         * testsuite/26_numerics/midpoint/integral.cc: New test.
4897         * testsuite/26_numerics/midpoint/pointer.cc: New test.
4898
4899 2019-03-04  Edward Smith-Rowland  <3dw4rd@verizon.net>
4900
4901         PR libstdc++/88996 Implement P0439R0
4902         Make std::memory_order a scoped enumeration.
4903         * include/bits/atomic_base.h: For C++20 make memory_order a scoped enum,
4904         add variables for the old enumerators.  Adjust calls.
4905         * testsuite/29_atomics/headers/atomic/types_std_c++2a.cc: New test.
4906         * testsuite/29_atomics/headers/atomic/types_std_c++2a_neg.cc: New test.
4907
4908 2019-03-04  Jonathan Wakely  <jwakely@redhat.com>
4909
4910         * testsuite/26_numerics/bit/bitops.rot/rotl.cc: Remove bogus dg-do
4911         directive.
4912
4913         * include/std/memory_resource (polymorphic_allocator): Add default
4914         template argument for C++20.
4915         (polymorphic_allocator::allocate_bytes)
4916         (polymorphic_allocator::deallocate_bytes)
4917         (polymorphic_allocator::allocate_object)
4918         (polymorphic_allocator::deallocate_object)
4919         (polymorphic_allocator::new_object)
4920         (polymorphic_allocator::delete_object): New member functions for
4921         C++20.
4922         * testsuite/20_util/polymorphic_allocator/allocate_object.cc: New
4923         test.
4924
4925 2019-03-03  Jonathan Wakely  <jwakely@redhat.com>
4926
4927         PR libstdc++/89562
4928         * src/filesystem/ops-common.h (do_copy_file): Open files in binary
4929         mode for mingw.
4930
4931 2019-03-01  Jonathan Wakely  <jwakely@redhat.com>
4932
4933         * testsuite/util/testsuite_allocator.h (__gnu_test::memory_resource)
4934         [!__cpp_sized_deallocation]: Do not pass size to operator delete.
4935
4936         * include/std/memory (uses_allocator_construction_args): New set of
4937         overloaded functions.
4938         (make_obj_using_allocator, uninitialized_construct_using_allocator):
4939         New functions.
4940         * include/std/memory_resource (polymorphic_allocator::construct)
4941         [__cplusplus > 201703l]: Replace all overloads with a single function
4942         using uses_allocator_construction_args.
4943         * testsuite/20_util/polymorphic_allocator/construct_c++2a.cc: New
4944         test.
4945         * testsuite/20_util/uses_allocator/make_obj.cc: New test.
4946
4947 2019-02-27  Jonathan Wakely  <jwakely@redhat.com>
4948
4949         PR libstdc++/89466
4950         * acinclude.m4 (GLIBCXX_CONFIGURE_DOCBOOK): Reorder check for local
4951         stylesheet directories before check for xsltproc. Try to use
4952         xmlcatalog to find local stylesheet directory before trying hardcoded
4953         paths. Add path used by suse to hardcoded paths. Adjust xsltproc
4954         check to look for the same stylesheet as doc/Makefile.am uses. Don't
4955         use xsltproc if xmlcatalog fails to find a local stylesheet.
4956         * configure.ac: Check for xmlcatalog.
4957         * Makefile.in: Regenerate.
4958         * configure: Likewise.
4959         * doc/Makefile.in: Likewise.
4960         * include/Makefile.in: Likewise.
4961         * libsupc++/Makefile.in: Likewise.
4962         * po/Makefile.in: Likewise.
4963         * python/Makefile.in: Likewise.
4964         * src/Makefile.in: Likewise.
4965         * src/c++11/Makefile.in: Likewise.
4966         * src/c++17/Makefile.in: Likewise.
4967         * src/c++98/Makefile.in: Likewise.
4968         * src/filesystem/Makefile.in: Likewise.
4969         * testsuite/Makefile.in: Likewise.
4970
4971 2019-02-26  Jonathan Wakely  <jwakely@redhat.com>
4972
4973         PR libstdc++/89477
4974         * include/bits/alloc_traits.h (_RequireNotAllocator): New helper for
4975         container deduction guides.
4976         * include/bits/hashtable.h (_RequireNotAllocatorOrIntegral): Likewise.
4977         * include/bits/stl_map.h (map): Use _RequireNotAllocator to constrain
4978         parameters in deduction guides.
4979         * include/bits/stl_multimap.h (multimap): Likewise.
4980         * include/bits/stl_multiset.h (multiset): Likewise.
4981         * include/bits/stl_queue.h (queue, priority_queue): Likewise.
4982         * include/bits/stl_set.h (set): Likewise.
4983         * include/bits/stl_stack.h (stack): Likewise.
4984         * include/bits/unordered_map.h (unordered_map, unordered_multimap):
4985         use _RequireNotAllocator and _RequireNotAllocatorOrIntegral to
4986         constrain parameters in deduction guides.
4987         * include/bits/unordered_set.h (unordered_set, unordered_multiset):
4988         Likewise.
4989         * testsuite/23_containers/map/cons/deduction.cc: Test additional
4990         deduction cases.
4991         * testsuite/23_containers/multiset/cons/deduction.cc: Likewise.
4992         * testsuite/23_containers/set/cons/deduction.cc: Likewise.
4993         * testsuite/23_containers/unordered_map/cons/deduction.cc: Likewise.
4994         * testsuite/23_containers/unordered_multimap/cons/deduction.cc:
4995         Likewise.
4996         * testsuite/23_containers/unordered_multiset/cons/deduction.cc:
4997         Likewise.
4998         * testsuite/23_containers/unordered_set/cons/deduction.cc: Likewise.
4999
5000         PR libstdc++/89416
5001         * include/bits/alloc_traits.h (__is_alloc_insertable_impl): Change
5002         to class template and partial specialization using void_t.
5003         (__is_copy_insertable, __is_move_insertable): Adjust base class.
5004
5005 2019-02-24  Jonathan Wakely  <jwakely@redhat.com>
5006
5007         PR libstdc++/89416
5008         * include/bits/alloc_traits.h (__is_alloc_insertable_impl): Make
5009         copy and move members public.
5010
5011 2019-02-23  Jonathan Wakely  <jwakely@redhat.com>
5012
5013         * include/std/type_traits (__underlying_type_impl): New helper to
5014         make underlying_type SFINAE-friendly.
5015         (underlying_type): Derive from __underlying_type_impl.
5016         * testsuite/20_util/underlying_type/requirements/typedefs-3.cc: New
5017         test.
5018
5019         PR libstdc++/89446
5020         * include/bits/char_traits.h (__constant_char_array): Check index is
5021         in range before dereferencing.
5022         (char_traits<char>::compare, char_traits<char>::find)
5023         (char_traits<char8_t>::compare, char_traits<char8_t>::find): Return
5024         immediately if n is zero.
5025         (char_traits<wchar_t>::compare, char_traits<wchar_t>::find): Likewise.
5026         Remove workarounds for PR 67026.
5027         * testsuite/21_strings/basic_string_view/operators/char/89446.cc:
5028         New test.
5029         * testsuite/21_strings/basic_string_view/operators/wchar_t/89446.cc:
5030         New test.
5031
5032 2019-02-22  Eric Botcazou  <ebotcazou@adacore.com>
5033
5034         * config/abi/post/sparc64-linux-gnu/baseline_symbols.txt: Adjust.
5035         * config/abi/post/sparc64-linux-gnu/32/baseline_symbols.txt: Likewise.
5036
5037 2019-02-22  Jakub Jelinek  <jakub@redhat.com>
5038
5039         PR libstdc++/89402
5040         * src/c++98/compatibility-ldbl.cc (_ZNKSt4hashIeEclEe): Change return
5041         type to std::size_t and argument to type to long double.
5042
5043 2019-02-22  Eric Botcazou  <ebotcazou@adacore.com>
5044
5045         * configure.host (abi_baseline_pair): Adjust for SPARC64/Linux.
5046         * config/abi/post/sparc64-linux-gnu: New directory.
5047         * config/abi/post/sparc64-linux-gnu/baseline_symbols.txt: New file.
5048         * config/abi/post/sparc64-linux-gnu/32: New directory.
5049         * config/abi/post/sparc64-linux-gnu/32/baseline_symbols.txt: New file.
5050
5051 2019-02-21  Jonathan Wakely  <jwakely@redhat.com>
5052
5053         * testsuite/29_atomics/headers/atomic/types_std_c++20.cc: New test.
5054         * testsuite/29_atomics/headers/atomic/types_std_c++20_neg.cc: New
5055         test.
5056
5057 2019-02-22  Tom Honermann  <tom@honermann.net>
5058
5059         * python/libstdcxx/v6/printers.py (register_type_printers): Add type
5060         printers for u8string and u8string_view.
5061
5062 2019-02-22  Tom Honermann  <tom@honermann.net>
5063
5064         * testsuite/18_support/byte/ops.cc: Validate
5065         std::to_integer<char8_t>, std::to_integer<char16_t>, and
5066         std::to_integer<char32_t>.
5067         * testsuite/18_support/numeric_limits/dr559.cc: Validate
5068         std::numeric_limits<char8_t>.
5069         * testsuite/18_support/numeric_limits/lowest.cc: Validate
5070         std::numeric_limits<char8_t>::lowest().
5071         * testsuite/18_support/numeric_limits/max_digits10.cc: Validate
5072         std::numeric_limits<char8_t>::max_digits10.
5073         * testsuite/18_support/type_info/fundamental.cc: Validate
5074         typeinfo for char8_t.
5075         * testsuite/20_util/from_chars/1_c++20_neg.cc: New test, validating
5076         std::from_chars with char8_t.
5077         * testsuite/20_util/hash/requirements/explicit_instantiation.cc:
5078         Validate explicit instantiation of std::hash<char8_t>.
5079         * testsuite/20_util/is_integral/value.cc: Validate
5080         std::is_integral<char8_t>.
5081         * testsuite/20_util/make_signed/requirements/typedefs-4.cc:
5082         Validate std::make_signed<char8_t>.
5083         * testsuite/21_strings/basic_string/cons/char/deduction.cc:
5084         Validate u8string construction from char8_t sources.
5085         * testsuite/21_strings/basic_string/types/pmr_typedefs.cc: Validate
5086         std::pmr::u8string.
5087         * testsuite/21_strings/basic_string_view/operations/compare/
5088         char/70483.cc: Validate substr operations on u8string_view.
5089         * testsuite/21_strings/basic_string_view/typedefs.cc: Validate that
5090         the u8string_view typedef is defined.
5091         * testsuite/21_strings/char_traits/requirements/
5092         constexpr_functions.cc: Validate char_traits<char8_t> constexpr
5093         member functions.
5094         * testsuite/21_strings/char_traits/requirements/
5095         constexpr_functions_c++17.cc: Validate char_traits<char8_t> C++17
5096         constexpr member functions.
5097         * testsuite/21_strings/headers/string/types_std_c++0x.cc: Validate
5098         that the u8string typedef is defined.
5099         * testsuite/22_locale/locale/cons/unicode.cc: Validate the presence
5100         of the std::codecvt<char16_t, char8_t, std::mbstate_t> and
5101         std::codecvt<char32_t, char8_t, std::mbstate_t> facets.
5102         * testsuite/29_atomics/atomic/cons/assign_neg.cc: Update line
5103         numbers.
5104         * testsuite/29_atomics/atomic/cons/copy_neg.cc: Likewise.
5105         * testsuite/29_atomics/atomic_integral/cons/assign_neg.cc:
5106         Likewise.
5107         * testsuite/29_atomics/atomic_integral/cons/copy_neg.cc: Likewise.
5108         * testsuite/29_atomics/atomic_integral/is_always_lock_free.cc:
5109         Validate std::atomic<char8_t>::is_always_lock_free
5110         * testsuite/29_atomics/atomic_integral/operators/bitwise_neg.cc:
5111         Update line numbers.
5112         * testsuite/29_atomics/atomic_integral/operators/decrement_neg.cc:
5113         Likewise.
5114         * testsuite/29_atomics/atomic_integral/operators/increment_neg.cc:
5115         Likewise.
5116         * testsuite/experimental/polymorphic_allocator/pmr_typedefs_string.cc:
5117         Validate std::experimental::pmr::u8string.
5118         * testsuite/experimental/string_view/typedefs.cc: Validate that the
5119         u8string_view typedef is defined.
5120         * testsuite/util/testsuite_common_types.h: Add char8_t, char16_t and
5121         char32_t to the typelists.
5122
5123 2019-02-22  Tom Honermann  <tom@honermann.net>
5124
5125         * include/ext/typelist.h: Constrain a partial specialization of
5126         typelist::detail::append_ to only match chain<T1,T2>.
5127
5128 2019-02-21  Jonathan Wakely  <jwakely@redhat.com>
5129
5130         PR libstdc++/89416
5131         * include/bits/alloc_traits.h (__is_alloc_insertable_impl): Replace
5132         class template with class. Replace move and copy member types with
5133         member alias templates, so they are only instantiated when needed.
5134         (__is_copy_insertable, __is_move_insertable): Adjust base class.
5135         * testsuite/23_containers/vector/modifiers/push_back/89130.cc: Enable
5136         test for C++11/14/17 as well.
5137         * testsuite/23_containers/vector/modifiers/push_back/89416.cc: New
5138         test.
5139
5140 2019-02-20  Jakub Jelinek  <jakub@redhat.com>
5141
5142         PR libstdc++/89402
5143         * src/c++98/compatibility-ldbl.cc (_ZNKSt4hashIeEclEe): Add
5144         _GLIBCXX_PURE to the alias declaration.
5145
5146 2019-02-19  Jonathan Wakely  <jwakely@redhat.com>
5147
5148         * testsuite/21_strings/basic_string/literals/types.cc
5149         [_GLIBCXX_USE_CHAR8_T]: Adjust expected string type for u8 literal.
5150         * testsuite/21_strings/basic_string/literals/values.cc
5151         [_GLIBCXX_USE_CHAR8_T]: Likewise.
5152         * testsuite/22_locale/codecvt/char16_t.cc: Adjust for u8 literals
5153         potentially having different type.
5154         * testsuite/22_locale/codecvt/char32_t.cc: Likewise.
5155         * testsuite/22_locale/codecvt/codecvt_utf8/79980.cc: Cast u8 literal
5156         to char.
5157         * testsuite/22_locale/codecvt/codecvt_utf8/wchar_t/1.cc: Likewise.
5158         * testsuite/22_locale/codecvt/utf8.cc: Likewise.
5159         * testsuite/22_locale/conversions/string/2.cc: Remove u8 prefix from
5160         string literals only using basic character set.
5161         * testsuite/22_locale/conversions/string/3.cc: Likewise. Cast other
5162         u8 literals to char.
5163         * testsuite/29_atomics/headers/atomic/macros.cc [_GLIBCXX_USE_CHAR8_T]:
5164         Test ATOMIC_CHAR8_T_LOCK_FREE.
5165         Add missing #error to ATOMIC_CHAR16_T_LOCK_FREE test.
5166         * testsuite/29_atomics/headers/atomic/types_std_c++0x.cc
5167         [_GLIBCXX_USE_CHAR8_T]: Check for std::atomic_char8_t.
5168         * testsuite/experimental/string_view/literals/types.cc
5169         [_GLIBCXX_USE_CHAR8_T]: Adjust expected string_view type for u8
5170         literal.
5171         * testsuite/experimental/string_view/literals/values.cc
5172         [_GLIBCXX_USE_CHAR8_T]: Likewise.
5173
5174 2019-02-19  Tom Honermann  <tom@honermann.net>
5175
5176         * testsuite/18_support/numeric_limits/char8_t.cc: New test cloned
5177         from char16_32_t.cc; validates numeric_limits<char8_t>.
5178         * testsuite/21_strings/basic_string/literals/types-char8_t.cc: New
5179         test cloned from types.cc; validates operator""s for char8_t
5180         returns u8string.
5181         * testsuite/21_strings/basic_string/literals/values-char8_t.cc: New
5182         test cloned from values.cc; validates construction and comparison
5183         of u8string values.
5184         * testsuite/21_strings/basic_string/requirements/
5185         /explicit_instantiation/char8_t/1.cc: New test cloned from
5186         char16_t/1.cc; validates explicit instantiation of
5187         basic_string<char8_t>.
5188         * testsuite/21_strings/basic_string_view/literals/types-char8_t.cc:
5189         New test cloned from types.cc; validates operator""sv for char8_t
5190         returns u8string_view.
5191         * testsuite/21_strings/basic_string_view/literals/
5192         values-char8_t.cc: New test cloned from values.cc; validates
5193         construction and comparison of u8string_view values.
5194         * testsuite/21_strings/basic_string_view/requirements/
5195         explicit_instantiation/char8_t/1.cc: New test cloned from
5196         char16_t/1.cc; validates explicit instantiation of
5197         basic_string_view<char8_t>.
5198         * testsuite/21_strings/char_traits/requirements/char8_t/65049.cc:
5199         New test cloned from char16_t/65049.cc; validates that
5200         char_traits<char8_t> is not vulnerable to the concerns in PR65049.
5201         * testsuite/21_strings/char_traits/requirements/char8_t/
5202         typedefs.cc: New test cloned from char16_t/typedefs.cc; validates
5203         that char_traits<char8_t> member typedefs are present and correct.
5204         * testsuite/21_strings/char_traits/requirements/
5205         explicit_instantiation/char8_t/1.cc: New test cloned from
5206         char16_t/1.cc; validates explicit instantiation of
5207         char_traits<char8_t>.
5208         * testsuite/22_locale/codecvt/char16_t-char8_t.cc: New test cloned
5209         from char16_t.cc: validates
5210         codecvt<char16_t, char8_t, mbstate_t>.
5211         * testsuite/22_locale/codecvt/char32_t-char8_t.cc: New test cloned
5212         from char32_t.cc: validates
5213         codecvt<char32_t, char8_t, mbstate_t>.
5214         * testsuite/22_locale/codecvt/utf8-char8_t.cc: New test cloned from
5215         utf8.cc; validates codecvt<char16_t, char8_t, std::mbstate_t> and
5216         codecvt<char32_t, char8_t, std::mbstate_t>.
5217         * testsuite/27_io/filesystem/path/native/string-char8_t.cc: New
5218         test cloned from string.cc; validates filesystem::path construction
5219         from char8_t input.
5220         * testsuite/experimental/feat-char8_t.cc: New test; validates that
5221         the __cpp_lib_char8_t feature test macro is defined with the
5222         correct value.
5223         * testsuite/experimental/filesystem/path/native/string-char8_t.cc:
5224         New test cloned from string.cc; validates filesystem::path
5225         construction from char8_t input.
5226         * testsuite/experimental/string_view/literals/types-char8_t.cc: New
5227         test cloned from types.cc; validates operator""sv for char8_t
5228         returns u8string_view.
5229         * testsuite/experimental/string_view/literals/values-char8_t.cc:
5230         New test cloned from values.cc; validates construction and
5231         comparison of u8string_view values.
5232         * testsuite/experimental/string_view/requirements/
5233         explicit_instantiation/char8_t/1.cc: New test cloned from
5234         char16_t/1.cc; validates explicit instantiation of
5235         basic_string_view<char8_t>.
5236         * testsuite/ext/char8_t/atomic-1.cc: New test; validates that
5237         ATOMIC_CHAR8_T_LOCK_FREE is not defined if char8_t support is not
5238         enabled.
5239
5240 2019-02-19  Tom Honermann  <tom@honermann.net>
5241
5242         P0482R5 char8_t: Standard library support
5243         * config/abi/pre/gnu-versioned-namespace.ver (CXXABI_2.0): Add
5244         typeinfo symbols for char8_t.
5245         * config/abi/pre/gnu.ver: Add CXXABI_1.3.12.
5246         (GLIBCXX_3.4.26): Add symbols for specializations of
5247         numeric_limits and codecvt that involve char8_t.
5248         (CXXABI_1.3.12): Add typeinfo symbols for char8_t.
5249         * include/bits/atomic_base.h: Add atomic_char8_t.
5250         * include/bits/basic_string.h: Add std::hash<u8string> and
5251         operator""s(const char8_t*, size_t).
5252         * include/bits/c++config: Define _GLIBCXX_USE_CHAR8_T and
5253         __cpp_lib_char8_t.
5254         * include/bits/char_traits.h: Add char_traits<char8_t>.
5255         * include/bits/codecvt.h: Add
5256         codecvt<char16_t, char8_t, mbstate_t>,
5257         codecvt<char32_t, char8_t, mbstate_t>,
5258         codecvt_byname<char16_t, char8_t, mbstate_t>, and
5259         codecvt_byname<char32_t, char8_t, mbstate_t>.
5260         * include/bits/cpp_type_traits.h: Add __is_integer<char8_t> to
5261         recognize char8_t as an integral type.
5262         * include/bits/fs_path.h: (path::__is_encoded_char): Recognize
5263         char8_t.
5264         (path::u8string): Return std::u8string when char8_t support is
5265         enabled.
5266         (path::generic_u8string): Likewise.
5267         (path::_S_convert): Handle conversion from char8_t input.
5268         (path::_S_str_convert): Likewise.
5269         * include/bits/functional_hash.h: Add hash<char8_t>.
5270         * include/bits/locale_conv.h (__str_codecvt_out): Add overloads for
5271         char8_t.
5272         * include/bits/locale_facets.h (_GLIBCXX_NUM_UNICODE_FACETS): Bump
5273         for new char8_t specializations.
5274         * include/bits/localefwd.h: Add missing declarations of
5275         codecvt<char16_t, char, mbstate_t> and
5276         codecvt<char32_t, char, mbstate_t>.  Add char8_t declarations
5277         codecvt<char16_t, char8_t, mbstate_t> and
5278         codecvt<char32_t, char8_t, mbstate_t>.
5279         * include/bits/postypes.h: Add u8streampos
5280         * include/bits/stringfwd.h: Add declarations of
5281         char_traits<char8_t> and u8string.
5282         * include/c_global/cstddef: Add __byte_operand<char8_t>.
5283         * include/experimental/bits/fs_path.h (path::__is_encoded_char):
5284         Recognize char8_t.
5285         (path::u8string): Return std::u8string when char8_t support is
5286         enabled.
5287         (path::generic_u8string): Likewise.
5288         (path::_S_convert): Handle conversion from char8_t input.
5289         (path::_S_str_convert): Likewise.
5290         * include/experimental/string: Add u8string.
5291         * include/experimental/string_view: Add u8string_view,
5292         hash<experimental::u8string_view>, and
5293         operator""sv(const char8_t*, size_t).
5294         * include/std/atomic: Add atomic<char8_t> and atomic_char8_t.
5295         * include/std/charconv (__is_int_to_chars_type): Recognize char8_t
5296         as a character type.
5297         * include/std/limits: Add numeric_limits<char8_t>.
5298         * include/std/string_view: Add u8string_view,
5299         hash<experimental::u8string_view>, and
5300         operator""sv(const char8_t*, size_t).
5301         * include/std/type_traits: Add __is_integral_helper<char8_t>,
5302         __make_unsigned<char8_t>, and __make_signed<char8_t>.
5303         * libsupc++/atomic_lockfree_defines.h: Define
5304         ATOMIC_CHAR8_T_LOCK_FREE.
5305         * src/c++11/Makefile.am: Compile with -fchar8_t when compiling
5306         codecvt.cc and limits.cc so that char8_t specializations of
5307         numeric_limits and codecvt and emitted.
5308         * src/c++11/Makefile.in: Likewise.
5309         * src/c++11/codecvt.cc: Define members of
5310         codecvt<char16_t, char8_t, mbstate_t>,
5311         codecvt<char32_t, char8_t, mbstate_t>,
5312         codecvt_byname<char16_t, char8_t, mbstate_t>, and
5313         codecvt_byname<char32_t, char8_t, mbstate_t>.
5314         * src/c++11/limits.cc: Define members of
5315         numeric_limits<char8_t>.
5316         * src/c++98/Makefile.am: Compile with -fchar8_t when compiling
5317         locale_init.cc and localename.cc.
5318         * src/c++98/Makefile.in: Likewise.
5319         * src/c++98/locale_init.cc: Add initialization for the
5320         codecvt<char16_t, char8_t, mbstate_t> and
5321         codecvt<char32_t, char8_t, mbstate_t> facets.
5322         * src/c++98/localename.cc: Likewise.
5323         * testsuite/util/testsuite_abi.cc: Validate ABI bump.
5324
5325 2019-02-18  Wilco Dijkstra  <wdijkstr@arm.com>
5326
5327         * 27_io/filesystem/operations/all.cc: Add dg-require-filesystem-ts.
5328         * 27_io/filesystem/operations/resize_file.cc: Likewise.
5329         * 27_io/filesystem/path/generation/normal2.cc: Likewise.
5330
5331 2019-02-14  Jonathan Wakely  <jwakely@redhat.com>
5332
5333         * doc/xml/manual/status_cxx2020.xml: Update P0887R1 status.
5334         * doc/html/*: Regenerate.
5335
5336         * doc/xml/manual/status_cxx2017.xml: Add P0063R3 to status table.
5337         * doc/html/*: Regenerate.
5338
5339         * doc/xml/manual/intro.xml: Document LWG 2586 status.
5340         * include/bits/uses_allocator.h (__uses_alloc): Use const lvalue
5341         allocator type in is_constructible checks.
5342         * testsuite/20_util/scoped_allocator/69293_neg.cc: Adjust dg-error.
5343         * testsuite/20_util/scoped_allocator/dr2586.cc: New test.
5344         * testsuite/20_util/tuple/cons/allocators.cc: Add test using
5345         problematic type from LWG 2586 discussion.
5346         * testsuite/20_util/uses_allocator/69293_neg.cc: Adjust dg-error.
5347         * testsuite/20_util/uses_allocator/cons_neg.cc: Likewise.
5348
5349         * configure.ac: Check for C11 timespec_get function.
5350         * crossconfig.m4 (freebsd, linux, gnu, cygwin, solaris, netbsd)
5351         (openbsd): Likewise
5352         * config.h.in: Regenerate.
5353         * configure: Regenerate.
5354         * include/c_global/ctime (timespec, timespec_get): Add to namespace
5355         std for C++17 and up.
5356
5357         * doc/xml/manual/intro.xml: Document LWG 2537 status.
5358         * include/bits/stl_queue.h
5359         (priority_queue(const Compare&, const Container&, const Alloc&))
5360         (priority_queue(const Compare&, Container&&, const Alloc&)): Call
5361         make_heap.
5362         * testsuite/23_containers/priority_queue/dr2537.cc: New test.
5363
5364         * doc/xml/manual/intro.xml: Document LWG 2566 status.
5365         * include/bits/stl_queue.h (queue, priority_queue): Add static
5366         assertions to enforce LWG 2566 requirement on value_type.
5367         * include/bits/stl_stack.h (stack): Likewise.
5368
5369         PR middle-end/89303
5370         * testsuite/20_util/enable_shared_from_this/89303.cc: New test.
5371
5372         * doc/xml/manual/intro.xml: Document LWG 2735 status.
5373         * include/bits/std_abs.h: Add comment about LWG 2735.
5374         * testsuite/26_numerics/headers/cstdlib/dr2735.cc: New test.
5375
5376 2019-02-13  Jonathan Wakely  <jwakely@redhat.com>
5377
5378         PR libstdc++/89345
5379         * include/std/version [__cpp_impl_destroying_delete]
5380         (__cpp_lib_destroying_delete): Only define for C++2a and later.
5381         * libsupc++/new [__cpp_impl_destroying_delete]
5382         (__cpp_lib_destroying_delete): Likewise.
5383         (destroying_delete_t, destroying_delete): Likewise, but define even
5384         when __cpp_impl_destroying_delete is not defined.
5385         * testsuite/18_support/destroying_delete.cc: New test.
5386
5387 2019-02-11  Jonathan Wakely  <jwakely@redhat.com>
5388
5389         PR libstdc++/89023
5390         * testsuite/17_intro/headers/c++2011/parallel_mode.cc: New test.
5391         * testsuite/17_intro/headers/c++2014/parallel_mode.cc: New test.
5392         * testsuite/17_intro/headers/c++2017/parallel_mode.cc: New test.
5393         * testsuite/28_regex/headers/regex/parallel_mode.cc: Remove.
5394
5395 2019-02-09  Jonathan Wakely  <jwakely@redhat.com>
5396
5397         PR libstdc++/71044
5398         * include/bits/fs_path.h (path::has_root_name)
5399         (path::has_root_directory, path::has_root_path)
5400         (path::has_relative_path, path::has_parent_path)
5401         (path::has_filename, path::has_stem, path::has_extension)
5402         (path::is_absolute, path::is_relative, path::_M_find_extension): Add
5403         noexcept.
5404         * src/c++17/fs_path.cc (path::has_root_name)
5405         (path::has_root_directory, path::has_root_path)
5406         (path::has_relative_path, path::has_parent_path)
5407         (path::has_filename, path::_M_find_extension): Add noexcept.
5408
5409 2019-02-06  Jonathan Wakely  <jwakely@redhat.com>
5410
5411         PR libstdc++/89102 (partial)
5412         * include/std/type_traits (common_type<>): Define.
5413         (common_type<T>): Derive from common_type<T, T>.
5414         * testsuite/20_util/common_type/requirements/explicit_instantiation.cc:
5415         Test zero-length template argument list.
5416         * testsuite/20_util/common_type/requirements/sfinae_friendly_1.cc:
5417         Test additional single argument cases.
5418         * testsuite/20_util/common_type/requirements/sfinae_friendly_2.cc:
5419         Adjust expected error.
5420
5421 2019-02-05  Jonathan Wakely  <jwakely@redhat.com>
5422
5423         PR libstdc++/89128
5424         * include/bits/stl_queue.h (queue, priority_queue): Add deduction
5425         guides.
5426         * include/bits/stl_stack.h (stack): Likewise.
5427         * testsuite/23_containers/priority_queue/deduction.cc: New test.
5428         * testsuite/23_containers/queue/deduction.cc: New test.
5429         * testsuite/23_containers/stack/deduction.cc: New test.
5430
5431         PR libstdc++/89194
5432         * include/std/type_traits (__is_convertible_helper)
5433         (__is_convertible_helper<_From, _To, false>): Revert changes to
5434         support is_nothrow_convertible.
5435         (__is_nt_convertible_helper): New helper.
5436         (is_nothrow_convertible): Use __is_nt_convertible_helper.
5437
5438         * testsuite/23_containers/vector/modifiers/push_back/49836.cc: Restore
5439         use of CopyConsOnlyType, but also test DelAnyAssign for completeness.
5440
5441         PR libstdc++/89130
5442         * include/bits/alloc_traits.h (__is_copy_insertable_impl): Rename to
5443         __is_alloc_insertable_impl. Replace single type member with two
5444         members, one for each of copy and move insertable.
5445         (__is_move_insertable): New trait for internal use.
5446         * include/bits/stl_vector.h (vector::_S_nothrow_relocate(true_type))
5447         (vector::_S_nothrow_relocate(true_type)): New functions to
5448         conditionally check if __relocate_a can throw.
5449         (vector::_S_use_relocate()): Dispatch to _S_nothrow_relocate based
5450         on __is_move_insertable.
5451         (vector::_S_do_relocate): New overloaded functions to conditionally
5452         call __relocate_a.
5453         (vector::_S_relocate): New function that dispatches to _S_do_relocate
5454         based on _S_use_relocate.
5455         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
5456         (vector::_M_default_append): Call _S_relocate instead of __relocate_a.
5457         * testsuite/23_containers/vector/modifiers/push_back/89130.cc: New.
5458
5459         PR libstdc++/89090
5460         * include/bits/stl_uninitialized.h (__relocate_a_1): Make unused
5461         parameter unnamed. Add message to static assertion.
5462         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
5463         (vector::_M_default_append): Use _GLIBCXX17_CONSTEXPR for if constexpr
5464         in C++11 code.
5465
5466 2019-02-05  Marc Glisse  <marc.glisse@inria.fr>
5467
5468         PR libstdc++/87106
5469         * include/bits/stl_uninitialized.h (__is_trivially_relocatable):
5470         Rename...
5471         (__is_bitwise_relocatable): ... to this.
5472         (__relocate_a_1): Adapt.
5473         * include/bits/stl_deque.h (__is_trivially_relocatable): Rename...
5474         (__is_bitwise_relocatable): ... to this.
5475
5476 2019-01-30  Jonathan Wakely  <jwakely@redhat.com>
5477
5478         PR libstdc++/89117
5479         * src/c++17/fs_path.cc (path::replace_extension): Erase extension from
5480         final component as well as from _M_pathname. Append the dot using
5481         operator+= instead of only to _M_pathname.
5482         (path::_M_find_extension): Reformat slightly.
5483         * testsuite/27_io/filesystem/path/modifiers/replace_extension.cc:
5484         Add more test cases.
5485
5486 2019-01-30  Ulrich Drepper  <drepper@redhat.com>
5487
5488         * doc/xml/manual/status_cxx2020.xml: Update P0600 entry.
5489
5490 2019-01-29  Jonathan Wakely  <jwakely@redhat.com>
5491
5492         * testsuite/26_numerics/headers/complex/synopsis.cc: Remove incorrect
5493         constexpr specifiers from arg and proj.
5494
5495         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Add missing exports for
5496         __shared_ptr instantiations used by gcc4-compatible ABI.
5497
5498         * include/experimental/forward_list (experimental::erase): Qualify
5499         call to erase_if.
5500         * include/experimental/list (experimental::erase): Likewise.
5501         * include/std/forward_list (std::erase): Likewise.
5502         * include/std/list (std::erase): Likewise.
5503
5504         * testsuite/20_util/reference_wrapper/result_type.cc: Disable for
5505         C++2a.
5506         * testsuite/20_util/reference_wrapper/typedefs-2.cc: Likewise.
5507         * testsuite/20_util/reference_wrapper/typedefs-3.cc: Likewise.
5508         * testsuite/20_util/reference_wrapper/typedefs.cc: Likewise.
5509         * testsuite/30_threads/async/54297.cc: Suppress nodiscard warning.
5510         * testsuite/ext/array_allocator/26875.cc: Likewise.
5511         * testsuite/ext/pool_allocator/allocate_chunk.cc: Likewise.
5512         * testsuite/util/replacement_memory_operators.h: Likewise.
5513         * testsuite/util/testsuite_allocator.h: Likewise.
5514
5515         * include/std/memory_resource (__pool_resource::_M_unpooled): Use
5516         normal mode vector, even for debug mode.
5517         * include/std/vector [_GLIBCXX_DEBUG] (_GLIBCXX_STD_C::pmr::vector):
5518         Define alias template for normal mode vector.
5519
5520 2019-01-28  Jonathan Wakely  <jwakely@redhat.com>
5521
5522         PR libstdc++/68737
5523         * config/locale/generic/c_locale.h (__convert_from_v)
5524         [_GLIBCXX_USE_C99_STDIO]: Also check _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
5525         * config/os/hpux/os_defines.h: Define _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
5526         * include/bits/locale_facets.tcc (num_put::_M_insert_float)
5527         [_GLIBCXX_USE_C99_STDIO]: Also check _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
5528
5529 2019-01-24  Jonathan Wakely  <jwakely@redhat.com>
5530
5531         PR libstdc++/88840
5532         * include/bits/stl_vector.h (vector::__use_relocate): Replace static
5533         data member with static member function _S_use_relocate().
5534         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
5535         (vector::_M_default_append): Use _S_use_relocate() instead of
5536         __use_relocate.
5537
5538         * testsuite/27_io/filesystem/path/compare/strings.cc: Only compare
5539         sign of results.
5540
5541 2019-01-22  Jonathan Wakely  <jwakely@redhat.com>
5542
5543         PR libstdc++/88740
5544         * testsuite/util/testsuite_hooks.h [stderr] (VERIFY): Use fprintf to
5545         write to stderr instead of using printf.
5546
5547 2019-01-21  Jakub Jelinek  <jakub@redhat.com>
5548
5549         PR libstdc++/86590
5550         * include/bits/char_traits.h (__constant_string_p,
5551         __constant_char_array_p): Use __builtin_is_constant_evaluated if
5552         available.
5553
5554 2019-01-20  Ulrich Drepper  <drepper@redhat.com>
5555
5556         Implement C++20 P0600r1.
5557         * include/backward/hash_map: Add nodiscard attribute to empty.
5558         * include/backward/hash_set: Likewise.
5559         * backward/hashtable.h: Likewise.
5560         * include/bits/basic_string.h: Likewise.
5561         * include/bits/forward_list.h: Likewise.
5562         * include/bits/hashtable.h: Likewise.
5563         * include/bits/regex.h: Likewise.
5564         * include/bits/stl_deque.h: Likewise.
5565         * include/bits/stl_list.h: Likewise.
5566         * include/bits/stl_map.h: Likewise.
5567         * include/bits/stl_multimap.h: Likewise.
5568         * include/bits/stl_multiset.h: Likewise.
5569         * include/bits/stl_queue.h: Likewise.
5570         * include/bits/stl_set.h: Likewise.
5571         * include/bits/stl_stack.h: Likewise.
5572         * include/bits/stl_tree.h: Likewise.
5573         * include/bits/stl_vector.h: Likewise.
5574         * include/bits/unordered_map.h: Likewise.
5575         * include/bits/unordered_set.h: Likewise.
5576         * include/debug/array: Likewise.
5577         * include/experimental/any: Likewise.
5578         * include/experimental/bits/fs_path.h: Likewise.
5579         * include/experimental/internet: Likewise.
5580         * include/experimental/string_view: Likewise.
5581         * include/ext/pb_ds/detail/bin_search_tree_/info_fn_imps.hpp:
5582         Likewise.
5583         * include/ext/pb_ds/detail/binary_heap_/binary_heap_.hpp:
5584         Likewise.
5585         * include/ext/pb_ds/detail/binary_heap_/info_fn_imps.hpp:
5586         Likewise.
5587         * include/ext/pb_ds/detail/cc_hash_table_map_/cc_ht_map_.hpp:
5588         Likewise.
5589         * include/ext/pb_ds/detail/cc_hash_table_map_/info_fn_imps.hpp:
5590         Likewise.
5591         * include/ext/pb_ds/detail/cc_hash_table_map_/size_fn_imps.hpp:
5592         Likewise.
5593         * include/ext/pb_ds/detail/gp_hash_table_map_/gp_ht_map_.hpp:
5594         Likewise.
5595         * include/ext/pb_ds/detail/gp_hash_table_map_/info_fn_imps.hpp:
5596         Likewise.
5597         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/
5598         info_fn_imps.hpp: Likewise.
5599         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/
5600         left_child_next_sibling_heap_.hpp: Likewise.
5601         * include/ext/pb_ds/detail/list_update_map_/info_fn_imps.hpp:
5602         Likewise.
5603         * include/ext/pb_ds/detail/list_update_map_/lu_map_.hpp:
5604         Likewise.
5605         * include/ext/pb_ds/detail/ov_tree_map_/info_fn_imps.hpp:
5606         Likewise.
5607         * include/ext/pb_ds/detail/ov_tree_map_/ov_tree_map_.hp:
5608         Likewise.
5609         * include/ext/pb_ds/detail/pat_trie_/info_fn_imps.hpp:
5610         Likewise.
5611         * include/ext/pb_ds/detail/pat_trie_/pat_trie_.hpp:
5612         Likewise.
5613         * include/ext/pb_ds/detail/rc_binomial_heap_/rc.hpp:
5614         Likewise.
5615         * include/ext/pb_ds/detail/tree_trace_base.hpp: Likewise.
5616         * include/ext/pb_ds/trie_policy.hpp: Likewise.
5617         * include/ext/rope: Likewise.
5618         * include/ext/slist: Likewise.
5619         * include/ext/vstring.h: Likewise.
5620         * include/profile/array: Likewise.
5621         * include/std/array: Likewise.
5622         * include/tr1/array: Likewise.
5623         * include/tr1/hashtable.h: Likewise.
5624         * include/tr1/regex: Likewise.
5625         * include/tr2/dynamic_bitset: Likewise.
5626         * include/bits/alloc_traits.h: Add nodiscard attribute to
5627         allocate.
5628         * include/experimental/memory_resource: Likewise.
5629         * include/ext/alloc_traits.h: Likewise.
5630         * include/ext/array_allocator.h: Likewise.
5631         * include/ext/bitmap_allocator.h: Likewise.
5632         * include/ext/debug_allocator.h: Likewise.
5633         * include/ext/extptr_allocator.h: Likewise.
5634         * include/ext/mt_allocator.h: Likewise.
5635         * include/ext/new_allocator.h: Likewise.
5636         * include/ext/pool_allocator.h: Likewise.
5637         * include/ext/throw_allocator.h: Likewise.
5638         * include/std/scoped_allocator: Likewise.
5639         * libsupc++/eh_alloc.cc: Likewise.
5640         * include/std/future: Add nodiscard attribute to async.
5641         * libsupc++/new: Add nodiscard attribute to new.
5642
5643 2019-01-18  Jonathan Wakely  <jwakely@redhat.com>
5644
5645         PR libstdc++/87514
5646         PR libstdc++/87520
5647         PR libstdc++/88782
5648         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export new symbol.
5649         * include/bits/shared_ptr.h
5650         (shared_ptr(_Sp_make_shared_tag, const Alloc&, Args&&...))
5651         (allocate_shared): Change to use new tag type.
5652         * include/bits/shared_ptr_base.h (_Sp_make_shared_tag::_S_eq):
5653         Declare new member function.
5654         (_Sp_alloc_shared_tag): Define new type.
5655         (_Sp_counted_ptr_inplace): Declare __shared_count<_Lp> as a friend.
5656         (_Sp_counted_ptr_inplace::_M_get_deleter) [!__cpp_rtti]: Use
5657         _Sp_make_shared_tag::_S_eq to check type_info.
5658         (__shared_count(Ptr, Deleter),__shared_count(Ptr, Deleter, Alloc)):
5659         Constrain to prevent being called with _Sp_alloc_shared_tag.
5660         (__shared_count(_Sp_make_shared_tag, const _Alloc&, Args&&...)):
5661         Replace constructor with ...
5662         (__shared_count(Tp*&, _Sp_alloc_shared_tag<_Alloc>, Args&&...)): Use
5663         reference parameter so address of the new object can be returned to
5664         the caller. Obtain the allocator from the tag type.
5665         (__shared_ptr(_Sp_make_shared_tag, const Alloc&, Args&&...)): Replace
5666         constructor with ...
5667         (__shared_ptr(_Sp_alloc_shared_tag<Alloc>, Args&&...)): Pass _M_ptr
5668         to the __shared_count constructor.
5669         (__allocate_shared): Change to use new tag type.
5670         * src/c++11/shared_ptr.cc (_Sp_make_shared_tag::_S_eq): Define.
5671
5672 2019-01-17  Jonathan Wakely  <jwakely@redhat.com>
5673
5674         * src/c++17/fs_ops.cc
5675         (equivalent(const path&, const path&, error_code&))
5676         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use GetFileInformationByHandle to
5677         compare files instead of relying on incomplete info returned by stat.
5678
5679         PR libstdc++/88884
5680         * src/c++17/fs_ops.cc (absolute(const path&, error_code&)): Do nothing
5681         if the path is already absolute.
5682         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Normalize root-directory.
5683         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Pass error_code to current_path.
5684
5685         PR libstdc++/88881
5686         * src/c++17/fs_ops.cc (canonical(const path&, error_code&))
5687         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Normalize path, to match behaviour
5688         of filesystem::exists.
5689         (create_directories(const path&, error_code&)): Add assertions.
5690         (status(const path&, error_code&)) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]:
5691         Add workaround for bug in _wstat for paths with trailing slash.
5692         * testsuite/27_io/filesystem/operations/create_directories.cc: Adjust
5693         for expected behaviour on mingw.
5694         * testsuite/experimental/filesystem/operations/create_directories.cc:
5695         Likewise.
5696         * testsuite/27_io/filesystem/operations/temp_directory_path.cc: Use
5697         "TMP" instead of "TMPDIR" and clean environment before each test. Do
5698         not test permissions on mingw targets.
5699
5700 2019-01-16  Jonathan Wakely  <jwakely@redhat.com>
5701
5702         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Add exports for fstream
5703         constructors and open members taking wide strings. Fix patterns for
5704         filesystem::path members to match wstring_view parameters. Add
5705         exports for shared_ptr members used by directory iterators.
5706         * src/c++17/fs_ops.cc (remove(const path&, error_code&)): Clear the
5707         error code parameter if the file doesn't exist.
5708         * src/filesystem/ops.cc (remove(const path&, error_code&)):
5709         Likewise.
5710         * testsuite/27_io/filesystem/operations/canonical.cc: Fix expected
5711         values for mingw targets, where "/" is not an absolute path. Do not
5712         test symlinks on mingw targets.
5713         * testsuite/experimental/filesystem/operations/canonical.cc: Likewise.
5714         * testsuite/27_io/filesystem/operations/copy.cc: Do not test symlinks
5715         on mingw targets.
5716         * testsuite/experimental/filesystem/operations/copy.cc: Likewise.
5717         * testsuite/27_io/filesystem/operations/create_directories.cc: Check
5718         that each component of the path is created.
5719         * testsuite/experimental/filesystem/operations/create_directories.cc:
5720         Likewise.
5721         * testsuite/27_io/filesystem/operations/exists.cc: Do not test
5722         permissions on mingw targets.
5723         * testsuite/experimental/filesystem/operations/exists.cc: Likewise.
5724         * testsuite/27_io/filesystem/operations/is_empty.cc: Likewise.
5725         * testsuite/experimental/filesystem/operations/is_empty.cc: Likewise.
5726         * testsuite/27_io/filesystem/operations/permissions.cc: XFAIL for
5727         mingw targets.
5728         * testsuite/experimental/filesystem/operations/permissions.cc:
5729         Likewise.
5730         * testsuite/27_io/filesystem/operations/remove.cc: Do not test
5731         symlinks or permissions on mingw targets.
5732         * testsuite/experimental/filesystem/operations/remove.cc: Likewise.
5733         * testsuite/27_io/filesystem/operations/remove_all.cc: Do not test
5734         symlinks on mingw targets.
5735         * testsuite/experimental/filesystem/operations/remove_all.cc:
5736         Likewise.
5737         * testsuite/27_io/filesystem/operations/status.cc: Do not test
5738         permissions on mingw targets.
5739         * testsuite/27_io/filesystem/operations/weakly_canonical.cc: Do not
5740         test symlinks on mingw targets.
5741         * testsuite/experimental/filesystem/operations/space.cc: Fix test
5742         for mingw targets.
5743
5744 2019-02-14  Ulrich Drepper  <drepper@redhat.com>
5745
5746         PR libstdc++/88738
5747         Warn about unused comparisons of shared_ptr/unique_ptr
5748         * include/bits/c++config [_GLIBCXX_NODISCARD]: Define.
5749         * include/bits/shared_ptr.h: Use it for operator ==, !=,
5750         <, <=, >, >= for shared_ptr.
5751         * include/bits/unique_ptr.h: Likewise for unique_ptr.
5752
5753 2019-01-15  Jonathan Wakely  <jwakely@redhat.com>
5754
5755         * include/bits/shared_ptr_base.h (__cpp_lib_shared_ptr_arrays): Define
5756         as 201611L, because P0497R0 changes are supported.
5757         * include/std/version (__cpp_lib_shared_ptr_arrays): Likewise.
5758
5759         * include/bits/erase_if.h [__cplusplus > 201703L]
5760         (__cpp_lib_erase_if): Only define for C++2a.
5761         * include/std/iterator [__cplusplus >= 201402L && !_GLIBCXX_DEBUG]
5762         (__cpp_lib_null_iterators): Define.
5763         * include/std/version [__cplusplus >= 201402L && !_GLIBCXX_DEBUG]
5764         (__cpp_lib_null_iterators): Define.
5765         [__cpp_impl_destroying_delete] (__cpp_lib_destroying_delete): Define.
5766
5767         * doc/xml/manual/status_cxx2017.xml: Document P0032R3 and P0307R2
5768         status.
5769         * include/bits/stl_uninitialized.h (__cpp_lib_raw_memory_algorithms):
5770         Define.
5771         * include/std/any (__cpp_lib_any): Define as 201606L, because P0032R3
5772         changes are supported.
5773         * include/std/optional (__cpp_lib_optional): Likewise.
5774         * include/std/variant (__cpp_lib_variant): Likewise.
5775         * include/std/version [!__STRICT_ANSI__]
5776         (__cpp_lib_uncaught_exceptions): Define as long integer.
5777         [__cplusplus >= 201703L] (__cpp_lib_any)
5778         (__cpp_lib_raw_memory_algorithms, __cpp_lib_uncaught_exceptions)
5779         (__cpp_lib_variant): Define for C++17.
5780         [__cplusplus >= 201703L] (__cpp_lib_optional): Update value and define
5781         as long integer.
5782         * libsupc++/exception (__cpp_lib_uncaught_exceptions): Define as long
5783         integer.
5784
5785         * doc/xml/manual/status_cxx2020.xml: Update P1123R0 status.
5786
5787 2019-01-12  Jonathan Wakely  <jwakely@redhat.com>
5788
5789         PR libstdc++/88811
5790         PR libstdc++/83306
5791         * src/filesystem/path.cc: Fix typo. If first path is empty, show []
5792         before second path.
5793         * testsuite/experimental/filesystem/filesystem_error/cons.cc: New
5794         test.
5795
5796 2019-01-11  Jonathan Wakely  <jwakely@redhat.com>
5797
5798         * doc/xml/manual/intro.xml: Include new section.
5799         * doc/xml/manual/status_cxx2017.xml: Document more
5800         implementation-defined properties of the library.
5801         * doc/xml/manual/status_cxx2020.xml: Document C++2a status.
5802         * doc/html/*: Regenerate.
5803
5804         * include/bits/refwrap.h [__cplusplus > 201703L]
5805         (_Refwrap_base_arg1, _Refwrap_base_arg2, _Reference_wrapper_base)
5806         (_Reference_wrapper_base_memfun): Do not define for C++2a.
5807         (reference_wrapper): Do not derive from _Reference_wrapper_base_memfun
5808         for C++2a.
5809         (reference_wrapper::operator()): Add static assertion.
5810         * testsuite/20_util/reference_wrapper/incomplete.cc: New test.
5811
5812         * include/std/chrono (duration_values::zero(), duration_values::min())
5813         (duration_values::max()): Add noexcept.
5814         (duration::zero(), duration::min(), duration::max()): Likewise.
5815         (time_point::zero(), time_point::min(), time_point::max()): Likewise.
5816         * testsuite/20_util/duration/requirements/noexcept.cc: New test.
5817         * testsuite/20_util/time_point/requirements/noexcept.cc: New test.
5818
5819         * include/std/version (__cpp_lib_erase_if): Move to C++20 group.
5820
5821 2019-01-11  Jakub Jelinek  <jakub@redhat.com>
5822
5823         * include/std/type_traits (__cpp_lib_is_constant_evaluated): Define.
5824         * include/std/version (__cpp_lib_is_constant_evaluated): Define.
5825
5826 2019-01-11  Jonathan Wakely  <jwakely@redhat.com>
5827
5828         PR libstdc++/88802
5829         * include/bits/functional_hash.h (hash<nullptr_t>): Define
5830         specialization for C++17 (P0513R0, LWG 2817).
5831         * testsuite/20_util/hash/nullptr.cc: New test.
5832
5833         PR libstdc++/88125
5834         * config/abi/pre/gnu.ver (GLIBCXX_3.4.6): Remove unused duplicate
5835         pattern for std::basic_stringbuf::str().
5836
5837         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Correct recent changes to
5838         basic_ostream::operator<< patterns.
5839
5840 2019-01-10  Jonathan Wakely  <jwakely@redhat.com>
5841
5842         * testsuite/27_io/filesystem/operations/last_write_time.cc: Fix
5843         test failures on targets with 32-bit time_t.
5844
5845         * include/bits/erase_if.h: Define __cpp_lib_erase_if.
5846         * include/std/deque: Likewise.
5847         * include/std/forward_list: Likewise.
5848         * include/std/list: Likewise.
5849         * include/std/string: Likewise.
5850         * include/std/vector: Likewise.
5851         * include/std/version: Likewise.
5852         * testsuite/21_strings/basic_string/erasure.cc: Test macro.
5853         * testsuite/23_containers/deque/erasure.cc: Likewise.
5854         * testsuite/23_containers/forward_list/erasure.cc: Likewise.
5855         * testsuite/23_containers/list/erasure.cc: Likewise.
5856         * testsuite/23_containers/map/erasure.cc: Likewise.
5857         * testsuite/23_containers/set/erasure.cc: Likewise.
5858         * testsuite/23_containers/unordered_map/erasure.cc: Likewise.
5859         * testsuite/23_containers/unordered_set/erasure.cc: Likewise.
5860         * testsuite/23_containers/vector/erasure.cc: Likewise.
5861
5862         * include/experimental/internet [AI_NUMERICSERV]
5863         (resolver_base::numeric_service): Define conditionally.
5864         * testsuite/experimental/net/internet/resolver/base.cc: Test it
5865         conditionally.
5866         * testsuite/experimental/net/internet/resolver/ops/lookup.cc:
5867         Likewise.
5868
5869 2019-01-10  Ville Voutilainen  <ville.voutilainen@gmail.com>
5870             Jonathan Wakely  <jwakely@redhat.com>
5871
5872         Implement LWG 2221
5873         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Tighten patterns.
5874         (GLIBCXX_3.4.26): Add new exports.
5875         * include/Makefile.am: Add ostream-inst.cc. Move string-inst.cc to
5876         correct list of sources.
5877         * include/Makefile.in: Regenerate.
5878         * include/std/ostream (operator<<(nullptr_t)): New member function.
5879         * src/c++17/ostream-inst.cc: New file.
5880         * testsuite/27_io/basic_ostream/inserters_other/char/lwg2221.cc: New
5881         test.
5882
5883 2019-01-10  Jonathan Wakely  <jwakely@redhat.com>
5884
5885         * testsuite/util/testsuite_fs.h (nonexistent_path): Include name
5886         of the source file containing the caller.
5887         * testsuite/27_io/filesystem/iterators/directory_iterator.cc: Remove
5888         directories created by test.
5889         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
5890         Likewise.
5891         * testsuite/experimental/filesystem/iterators/directory_iterator.cc:
5892         Likewise.
5893         * testsuite/experimental/filesystem/iterators/
5894         recursive_directory_iterator.cc: Likewise.
5895
5896 2019-01-10  Jakub Jelinek  <jakub@redhat.com>
5897
5898         PR tree-optimization/88775
5899         * include/bits/stl_function.h (greater<_Tp*>::operator(),
5900         less<_Tp*>::operator(), greater_equal<_Tp*>::operator(),
5901         less_equal<_Tp*>::operator()): Use __builtin_is_constant_evaluated
5902         instead of __builtin_constant_p if available.  Don't bother with
5903         the pointer comparison in C++11 and earlier.
5904
5905 2019-01-09  Sandra Loosemore  <sandra@codesourcery.com>
5906
5907         PR other/16615
5908
5909         * include/ext/bitmap_allocator.h: Mechanically replace "can not"
5910         with "cannot".
5911
5912 2019-01-09  Jonathan Wakely  <jwakely@redhat.com>
5913
5914         * testsuite/libstdc++-prettyprinters/cxx17.cc: Fix expected output
5915         for filesystem::path. Give variables more distinctive names.
5916
5917         * include/std/optional (_Optional_payload_base::_M_copy_assign): New
5918         member function to perform non-trivial assignment.
5919         (_Optional_payload_base::_M_move_assign): Likewise.
5920         (_Optional_payload<T, true, false, true>::operator=)
5921         (_Optional_payload<T, true, true, false>::operator=)
5922         (_Optional_payload<T, true, false, false>::operator=): Call
5923         _M_copy_assign and/or _M_move_assign to do non-trivial assignments.
5924
5925         PR libstdc++/88204
5926         * testsuite/26_numerics/complex/operators/more_constexpr.cc: Do not
5927         test std::complex<long double> if long double format is IBM128.
5928         * testsuite/26_numerics/complex/requirements/more_constexpr.cc:
5929         Likewise.
5930
5931 2019-01-08  Jonathan Wakely  <jwakely@redhat.com>
5932
5933         * testsuite/libstdc++-prettyprinters/compat.cc: Test printer support
5934         for old std::unique_ptr layout.
5935         * testsuite/libstdc++-prettyprinters/cxx17.cc: Fix std::variant test
5936         to become valueless. Add filesystem::path tests.
5937
5938         PR libstdc++/87855
5939         * include/std/optional (_Optional_payload_base): New class template
5940         for common code hoisted from _Optional_payload specializations. Use
5941         a template for the union, to allow a partial specialization for
5942         types with non-trivial destructors. Add constructors for in-place
5943         initialization to the union.
5944         (_Optional_payload(bool, const _Optional_payload&)): Use _M_construct
5945         to perform non-trivial copy construction, instead of relying on
5946         non-standard copy elision in a delegating constructor.
5947         (_Optional_payload(bool, _Optional_payload&&)): Likewise for
5948         non-trivial move construction.
5949         (_Optional_payload): Derive from _Optional_payload_base and use it
5950         for everything except the non-trivial assignment operators, which are
5951         defined as needed.
5952         (_Optional_payload<false, C, M>): Derive from the specialization
5953         _Optional_payload<true, false, false> and add a destructor.
5954         (_Optional_base_impl::_M_destruct, _Optional_base_impl::_M_reset):
5955         Forward to corresponding members of _Optional_payload.
5956         (_Optional_base_impl::_M_is_engaged, _Optional_base_impl::_M_get):
5957         Hoist common members from _Optional_base.
5958         (_Optional_base): Make all members and base class public.
5959         (_Optional_base::_M_get, _Optional_base::_M_is_engaged): Move to
5960         _Optional_base_impl.
5961         * python/libstdcxx/v6/printers.py (StdExpOptionalPrinter): Add
5962         support for new std::optional layout.
5963         * testsuite/libstdc++-prettyprinters/compat.cc: New test.
5964
5965         PR libstdc++/88066
5966         * include/bits/locale_conv.h: Use <> for includes not "".
5967         * include/ext/random: Likewise.
5968         * include/ext/vstring.h: Likewise.
5969
5970 2019-01-08  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
5971
5972         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Tighten existing patterns.
5973         (GLIBCXX_3.4.21): Likewise.
5974
5975 2019-01-08  Jonathan Wakely  <jwakely@redhat.com>
5976
5977         PR libstdc++/88749
5978         * src/filesystem/ops.cc (last_write_time): Fix preprocessor condition
5979         to match the one that controls whether utimbuf and utime are declared.
5980
5981 2019-01-07  Jonathan Wakely  <jwakely@redhat.com>
5982
5983         PR libstdc++/87787
5984         * include/bits/char_traits.h (char_traits::move): Do not pass null
5985         pointers to memmove.
5986         * include/bits/locale_facets.h
5987         (ctype<char>::widen(const char*, const char*, char*)): Do not
5988         pass null pointers to memcpy.
5989         (ctype<char>::narrow(const char*, const char*, char, char*)):
5990         Likewise.
5991         (ctype<char>::do_widen(const char*, const char*, char*)):
5992         Likewise.
5993         (ctype<char>::do_narrow(const char*, const char*, char, char*)):
5994         Likewise.
5995
5996         * doc/xml/manual/spine.xml: Update copyright years.
5997         * doc/xml/manual/status_cxx2017.xml: Adjust note about -lstdc++fs.
5998         * doc/xml/manual/using.xml: Remove requirement to link with -lstdc++fs
5999         for C++17 filesystem library.
6000         * doc/html/*: Regenerate.
6001
6002         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for truncate.
6003         * config.h.in: Regenerate.
6004         * config/abi/pre/gnu.ver: Order patterns for filesystem operations
6005         alphabetically and add missing entries for copy_symlink,
6006         hard_link_count, rename, and resize_file.
6007         * configure: Regenerate.
6008         * src/c++17/fs_ops.cc (resize_file): Remove #if so posix::truncate is
6009         used unconditionally.
6010         * src/filesystem/ops-common.h (__gnu_posix::truncate)
6011         [!_GLIBCXX_HAVE_TRUNCATE]: Provide fallback definition that only
6012         supports truncating to zero length.
6013         * testsuite/27_io/filesystem/operations/all.cc: New test.
6014         * testsuite/27_io/filesystem/operations/resize_file.cc: New test.
6015
6016 2019-01-06  Jonathan Wakely  <jwakely@redhat.com>
6017
6018         PR libstdc++/86756
6019         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for utime and
6020         lstat and define _GLIBCXX_USE_UTIME and _GLIBCXX_USE_LSTAT.
6021         * config.h.in: Regenerate.
6022         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export symbols for
6023         remaining std::filesystem types and functions.
6024         * configure: Regenerate.
6025         * src/c++17/Makefile.am: Add C++17 filesystem sources.
6026         * src/c++17/Makefile.in: Regenerate.
6027         * src/c++17/cow-fs_dir.cc: Move src/filesystem/cow-std-dir.cc to
6028         here, and change name of included file.
6029         * src/c++17/cow-fs_ops.cc: Move src/filesystem/cow-std-ops.cc to
6030         here, and change name of included file.
6031         * src/c++17/fs_dir.cc: Move src/filesystem/std-dir.cc to here. Change
6032         path to dir-common.h.
6033         * src/c++17/fs_ops.cc: Move src/filesystem/std-ops.cc to here. Change
6034         path to ops-common.h. Disable -Wunused-parameter warnings.
6035         (internal_file_clock): Define unconditionally.
6036         [!_GLIBCXX_HAVE_SYS_STAT_H] (internal_file_clock::from_stat): Do not
6037         define.
6038         (do_copy_file, do_space): Move definitions to ops.common.h.
6039         (copy, file_size, hard_link_count, last_write_time, space): Only
6040         perform operation when _GLIBCXX_HAVE_SYS_STAT_H is defined, otherwise
6041         report an error.
6042         (last_write_time, read_symlink): Remove unused attributes from
6043         parameters.
6044         * src/filesystem/Makefile.am: Remove C++17 filesystem sources.
6045         * src/filesystem/Makefile.in: Regenerate.
6046         * src/filesystem/cow-std-dir.cc: Move to src/c++17/cow-fs_dir.cc.
6047         * src/filesystem/cow-std-ops.cc: Move to src/c++17/cow-fs_ops.cc.
6048         * src/filesystem/std-dir.cc: Move to src/c++17/fs_dir.cc.
6049         * src/filesystem/std-ops.cc: Move to src/c++17/fs_ops.cc.
6050         * src/filesystem/dir-common.h [!_GLIBCXX_HAVE_DIRENT_H]: Define
6051         dummy types and functions instead of using #error.
6052         * src/filesystem/dir.cc [!_GLIBCXX_HAVE_DIRENT_H]: Use #error.
6053         * src/filesystem/ops-common.h [!_GLIBCXX_USE_LSTAT] (lstat): Define
6054         in terms of stat.
6055         [!_GLIBCXX_HAVE_UNISTD_H]: Define dummy types and functions.
6056         (do_copy_file, do_space): Move definitions here from std-ops.cc.
6057         * src/filesystem/ops.cc: Adjust calls to do_copy_file and do_space
6058         to account for new namespace.
6059         * testsuite/27_io/filesystem/directory_entry/86597.cc: Remove
6060         -lstdc++fs from dg-options.
6061         * testsuite/27_io/filesystem/directory_entry/lwg3171.cc: Likewise.
6062         * testsuite/27_io/filesystem/file_status/1.cc: Likewise.
6063         * testsuite/27_io/filesystem/filesystem_error/cons.cc: Likewise.
6064         * testsuite/27_io/filesystem/filesystem_error/copy.cc: Likewise.
6065         * testsuite/27_io/filesystem/iterators/directory_iterator.cc:
6066         Likewise.
6067         * testsuite/27_io/filesystem/iterators/pop.cc: Likewise.
6068         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
6069         Likewise.
6070         * testsuite/27_io/filesystem/operations/absolute.cc: Likewise.
6071         * testsuite/27_io/filesystem/operations/canonical.cc: Likewise.
6072         * testsuite/27_io/filesystem/operations/copy.cc: Likewise.
6073         * testsuite/27_io/filesystem/operations/copy_file.cc: Likewise.
6074         * testsuite/27_io/filesystem/operations/create_directories.cc:
6075         Likewise.
6076         * testsuite/27_io/filesystem/operations/create_directory.cc: Likewise.
6077         * testsuite/27_io/filesystem/operations/create_symlink.cc: Likewise.
6078         * testsuite/27_io/filesystem/operations/current_path.cc: Likewise.
6079         * testsuite/27_io/filesystem/operations/equivalent.cc: Likewise.
6080         * testsuite/27_io/filesystem/operations/exists.cc: Likewise.
6081         * testsuite/27_io/filesystem/operations/file_size.cc: Likewise.
6082         * testsuite/27_io/filesystem/operations/is_empty.cc: Likewise.
6083         * testsuite/27_io/filesystem/operations/last_write_time.cc: Likewise.
6084         * testsuite/27_io/filesystem/operations/permissions.cc: Likewise.
6085         * testsuite/27_io/filesystem/operations/proximate.cc: Likewise.
6086         * testsuite/27_io/filesystem/operations/read_symlink.cc: Likewise.
6087         * testsuite/27_io/filesystem/operations/relative.cc: Likewise.
6088         * testsuite/27_io/filesystem/operations/remove.cc: Likewise.
6089         * testsuite/27_io/filesystem/operations/remove_all.cc: Likewise.
6090         * testsuite/27_io/filesystem/operations/space.cc: Likewise.
6091         * testsuite/27_io/filesystem/operations/status.cc: Likewise.
6092         * testsuite/27_io/filesystem/operations/symlink_status.cc: Likewise.
6093         * testsuite/27_io/filesystem/operations/temp_directory_path.cc:
6094         Likewise.
6095         * testsuite/27_io/filesystem/operations/weakly_canonical.cc: Likewise.
6096
6097
6098         PR libstdc++/86756
6099         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Make various patterns for
6100         typeinfo and vtables less greedy.
6101         (GLIBCXX_3.4.26): Export symbols for std::filesystem::path.
6102         * src/c++17/Makefile.am: Add fs_path.cc and cow-fs_path.cc.
6103         * src/c++17/Makefile.in: Regenerate.
6104         * src/c++17/cow-fs_path.cc: Move src/filesystem/cow-std-path.cc to
6105         here, and change name of included file.
6106         * src/c++17/fs_path.cc: Move src/filesystem/std-path.cc to here.
6107         * src/filesystem/Makefile.am: Remove std-path.cc and cow-std-path.cc
6108         from sources.
6109         * src/filesystem/Makefile.in: Regenerate.
6110         * src/filesystem/cow-std-path.cc: Move to src/c++17/cow-fs_path.cc.
6111         * src/filesystem/std-path.cc: Move to src/c++17/fs_path.cc.
6112         * testsuite/27_io/filesystem/path/append/path.cc: Remove -lstdc++fs
6113         from dg-options and remove dg-require-filesystem-ts.
6114         * testsuite/27_io/filesystem/path/append/source.cc: Likewise.
6115         * testsuite/27_io/filesystem/path/assign/assign.cc: Likewise.
6116         * testsuite/27_io/filesystem/path/assign/copy.cc: Likewise.
6117         * testsuite/27_io/filesystem/path/compare/compare.cc: Likewise.
6118         * testsuite/27_io/filesystem/path/compare/lwg2936.cc: Likewise.
6119         * testsuite/27_io/filesystem/path/compare/path.cc: Likewise.
6120         * testsuite/27_io/filesystem/path/compare/strings.cc: Likewise.
6121         * testsuite/27_io/filesystem/path/concat/path.cc: Likewise.
6122         * testsuite/27_io/filesystem/path/concat/strings.cc: Likewise.
6123         * testsuite/27_io/filesystem/path/construct/80762.cc: Likewise.
6124         * testsuite/27_io/filesystem/path/construct/copy.cc: Likewise.
6125         * testsuite/27_io/filesystem/path/construct/default.cc: Likewise.
6126         * testsuite/27_io/filesystem/path/construct/format.cc: Likewise.
6127         * testsuite/27_io/filesystem/path/construct/locale.cc: Likewise.
6128         * testsuite/27_io/filesystem/path/construct/range.cc: Likewise.
6129         * testsuite/27_io/filesystem/path/construct/string_view.cc: Likewise.
6130         * testsuite/27_io/filesystem/path/decompose/extension.cc: Likewise.
6131         * testsuite/27_io/filesystem/path/decompose/filename.cc: Likewise.
6132         * testsuite/27_io/filesystem/path/decompose/parent_path.cc: Likewise.
6133         * testsuite/27_io/filesystem/path/decompose/relative_path.cc: Likewise.
6134         * testsuite/27_io/filesystem/path/decompose/root_directory.cc:
6135         Likewise.
6136         * testsuite/27_io/filesystem/path/decompose/root_name.cc: Likewise.
6137         * testsuite/27_io/filesystem/path/decompose/root_path.cc: Likewise.
6138         * testsuite/27_io/filesystem/path/decompose/stem.cc: Likewise.
6139         * testsuite/27_io/filesystem/path/generation/normal.cc: Likewise.
6140         * testsuite/27_io/filesystem/path/generation/normal2.cc: Likewise.
6141         * testsuite/27_io/filesystem/path/generation/proximate.cc: Likewise.
6142         * testsuite/27_io/filesystem/path/generation/relative.cc: Likewise.
6143         * testsuite/27_io/filesystem/path/generic/generic_string.cc: Likewise.
6144         * testsuite/27_io/filesystem/path/itr/components.cc: Likewise.
6145         * testsuite/27_io/filesystem/path/itr/traversal.cc: Likewise.
6146         * testsuite/27_io/filesystem/path/modifiers/clear.cc: Likewise.
6147         * testsuite/27_io/filesystem/path/modifiers/make_preferred.cc:
6148         Likewise.
6149         * testsuite/27_io/filesystem/path/modifiers/remove_filename.cc:
6150         Likewise.
6151         * testsuite/27_io/filesystem/path/modifiers/replace_extension.cc:
6152         Likewise.
6153         * testsuite/27_io/filesystem/path/modifiers/replace_filename.cc:
6154         Likewise.
6155         * testsuite/27_io/filesystem/path/modifiers/swap.cc: Likewise.
6156         * testsuite/27_io/filesystem/path/native/string.cc: Likewise.
6157         * testsuite/27_io/filesystem/path/nonmember/append.cc: Likewise.
6158         * testsuite/27_io/filesystem/path/nonmember/hash_value.cc: Likewise.
6159         * testsuite/27_io/filesystem/path/query/empty.cc: Likewise.
6160         * testsuite/27_io/filesystem/path/query/has_extension.cc: Likewise.
6161         * testsuite/27_io/filesystem/path/query/has_filename.cc: Likewise.
6162         * testsuite/27_io/filesystem/path/query/has_parent_path.cc: Likewise.
6163         * testsuite/27_io/filesystem/path/query/has_relative_path.cc: Likewise.
6164         * testsuite/27_io/filesystem/path/query/has_root_directory.cc:
6165         Likewise.
6166         * testsuite/27_io/filesystem/path/query/has_root_name.cc: Likewise.
6167         * testsuite/27_io/filesystem/path/query/has_root_path.cc: Likewise.
6168         * testsuite/27_io/filesystem/path/query/has_stem.cc: Likewise.
6169         * testsuite/27_io/filesystem/path/query/is_absolute.cc: Likewise.
6170         * testsuite/27_io/filesystem/path/query/is_relative.cc: Likewise.
6171
6172         PR libstdc++/87431
6173         * include/std/variant (_Variant_storage<true, _Types...>::_M_valid):
6174         Check is_trivially_copyable instead of is_scalar.
6175         (variant::emplace<N, Args>(Args&&...)): If construction of the new
6176         contained value can throw and its type is trivially copyable then
6177         construct into a temporary variant and move from it, to provide the
6178         strong exception safety guarantee.
6179         (variant::emplace<N, U, Args>(initializer_list<U>, Args&&...)):
6180         Likewise.
6181         * testsuite/20_util/variant/87431.cc: New test.
6182         * testsuite/20_util/variant/run.cc: Adjust test so that throwing
6183         conversion causes valueless state.
6184
6185         PR libstdc++/88607
6186         * testsuite/17_intro/headers/c++1998/charset.cc: New test.
6187         * testsuite/17_intro/headers/c++2011/charset.cc: New test.
6188         * testsuite/17_intro/headers/c++2014/charset.cc: New test.
6189         * testsuite/17_intro/headers/c++2017/charset.cc: New test.
6190         * testsuite/17_intro/headers/c++2020/charset.cc: New test.
6191
6192 2019-01-05  Jonathan Wakely  <jwakely@redhat.com>
6193
6194         * include/bits/fs_fwd.h (__file_clock): Define new clock.
6195         (file_time_type): Redefine in terms of __file_clock.
6196         * src/filesystem/ops-common.h (file_time): Add FIXME comment about
6197         overflow.
6198         * src/filesystem/std-ops.cc (is_set(perm_options, perm_options)): Give
6199         internal linkage.
6200         (internal_file_lock): New helper type for accessing __file_clock.
6201         (do_copy_file): Use internal_file_lock to convert system time to
6202         file_time_type.
6203         (last_write_time(const path&, error_code&)): Likewise.
6204         (last_write_time(const path&, file_time_type, error_code&)): Likewise.
6205
6206 2019-01-04  Jonathan Wakely  <jwakely@redhat.com>
6207
6208         * config/abi/pre/gnu.ver (GLIBCXX_3.4.21): Make patterns less greedy
6209         for const member functions of std::basic_string.
6210         (GLIBCXX_3.4.26): Export member functions of std::basic_string added
6211         in C++17.
6212         * include/bits/basic_string.h (basic_string(__sv_wrapper, const A&)):
6213         Make non-standard constructor private.
6214         [!_GLIBCXX_USE_CXX11_ABI] (basic_string(__sv_wrapper, const A&)):
6215         Likewise.
6216         * include/bits/basic_string.tcc (std::string, std::wstring): Declare
6217         explicit instantiations for C++17 as well as earlier dialects.
6218         * src/c++17/Makefile.am: Add new source files.
6219         * src/c++17/Makefile.in: Regenerate.
6220         * src/c++17/cow-string-inst.cc: New file defining explicit
6221         instantiations for basic_string member functions added in C++17.
6222         * src/c++17/string-inst.cc: Likewise.
6223
6224         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export allocator-extended
6225         copy/move constructors for old std::basic_string.
6226         * include/bits/basic_string.h [!_GLIBCXX_USE_CXX11_ABI]
6227         (basic_string::reference, basic_string::const_reference): Define
6228         as plain references for C++11 and later.
6229         (basic_string::basic_string()): Put constructor body outside
6230         preprocessor conditional groups.
6231         (basic_string::basic_string(basic_string&&)): Move _Alloc_hider
6232         instead of copying it.
6233         (basic_string::basic_string(const basic_string&, const _Alloc&)):
6234         Define.
6235         (basic_string::basic_string(basic_string&&, const _Alloc&)):
6236         Define.
6237         * include/bits/fs_path.h [!_GLIBCXX_USE_CXX11_ABI]: Remove special
6238         cases for old basic_string.
6239         * testsuite/21_strings/basic_string/cons/char/8.cc: Test
6240         allocator-extended constructors unconditionally. Add extra members to
6241         allocator type when using old string ABI.
6242         * testsuite/21_strings/basic_string/allocator/71964.cc: Enable test
6243         for old string ABI.
6244         * testsuite/21_strings/basic_string/cons/wchar_t/8.cc: Likewise.
6245
6246         * testsuite/23_containers/list/61347.cc: Avoid spurious failure when
6247         -fno-inline added to test flags.
6248
6249         * testsuite/21_strings/basic_string/requirements/
6250         explicit_instantiation/debug.cc: Remove XFAIL for old ABI.
6251
6252         * testsuite/27_io/filesystem/filesystem_error/copy.cc: Fix static
6253         assertion failures with old std::string ABI.
6254
6255         * include/bits/fs_path.h (path::_List::erase): Replace both overloads
6256         with ...
6257         (path::pop_back(), path::_M_erase_from(const_iterator)): New member
6258         functions that will only erase elements at the end.
6259         * src/filesystem/std-path.cc (path::_List::_Impl::pop_back()): Define.
6260         (path::_List::_Impl::_M_erase_from(const_iterator)): Define.
6261         (path::_List::operator=(const _List&)): Use _M_erase_from(p) instead
6262         of erase(p, end()).
6263         (path::_List::pop_back()): Define.
6264         (path::_List::_M_erase_from(const_iterator)): Define.
6265         (path::operator/=(const path&)): Use pop_back to remove last component
6266         and _M_erase_from to remove multiple components.
6267         (path::_M_append(basic_string_view<value_type>)): Likewise.
6268         (path::operator+=(const path&)): Likewise.
6269         (path::_M_concat(basic_string_view<value_type>)): Likewise.
6270         (path::remove_filename()): Likewise.
6271         (path::lexically_normal()): Use _List::_Impl iterators instead of
6272         path::iterator. Use pop_back to remove components from the end. Clear
6273         trailing filename, instead of using erase(const_iterator) to remove
6274         a non-final component.
6275         * testsuite/27_io/filesystem/path/generation/normal.cc: Test
6276         additional cases.
6277         * testsuite/27_io/filesystem/path/generation/normal2.cc: New test.
6278
6279         * src/filesystem/std-path.cc (path::operator+=(const path&)): Fix
6280         incorrect treatment of empty filename after trailing slash.
6281         * testsuite/27_io/filesystem/path/concat/path.cc: Test problem case.
6282
6283         * testsuite/21_strings/basic_string/modifiers/assign/char/
6284         move_assign_optim.cc: Avoid spurious failure when -fno-inline added
6285         to test flags.
6286         * testsuite/21_strings/basic_string/modifiers/assign/wchar_t/
6287         move_assign_optim.cc: Likewise.
6288
6289 2019-01-03  Jonathan Wakely  <jwakely@redhat.com>
6290             Jakub Jelinek  <jakub@redhat.com>
6291
6292         PR libstdc++/88607
6293         * include/experimental/memory: Replace UTF-8 quote characters.
6294         * include/std/future: Replace UTF-8 "em dash" characters.
6295
6296 2019-01-03  Jonathan Wakely  <jwakely@redhat.com>
6297
6298         PR libstdc++/88607
6299         * include/bits/forward_list.h: Replace UTF-8 "ligature fi" character.
6300         * include/debug/forward_list: Likewise.
6301         * include/experimental/bits/shared_ptr.h: Remove UTF-8 "section sign"
6302         character.
6303         * include/experimental/chrono: Likewise.
6304         * include/experimental/functional: Likewise.
6305         * include/experimental/ratio: Likewise.
6306         * include/experimental/system_error: Likewise.
6307         * include/experimental/tuple: Likewise.
6308         * include/experimental/type_traits: Likewise.
6309         * include/parallel/workstealing.h: Replace UTF-8 "en dash" character.
6310         * include/parallel/multiseq_selection.h: Likewise.
6311
6312         PR libstdc++/88681
6313         * config/abi/pre/gnu.ver: Add missing exports.
6314         * testsuite/22_locale/collate_byname/88681.cc: New test.
6315         * testsuite/22_locale/time_get/get/char/88681.cc: New test.
6316         * testsuite/22_locale/time_get/get/wchar_t/88681.cc: New test.
6317
6318 2019-01-02  Jonathan Wakely  <jwakely@redhat.com>
6319
6320         * testsuite/23_containers/map/cons/deduction.cc: Test deduction from
6321         initializer_list<value_type> and from input iterator ranges.
6322         * testsuite/23_containers/multimap/cons/deduction.cc: Likewise.
6323
6324         * testsuite/experimental/string_view/element_access/char/empty.cc:
6325         Fix year range in copyright header.
6326
6327 2019-01-02  Joel Brobecker  <brobecker@adacore.com>
6328
6329         * testsuite/21_strings/basic_string_view/element_access/char/empty.cc:
6330         Fix year range in copyright header.
6331
6332 2019-01-01  Jakub Jelinek  <jakub@redhat.com>
6333
6334         Update copyright years.
6335 \f
6336 Copyright (C) 2019 Free Software Foundation, Inc.
6337
6338 Copying and distribution of this file, with or without modification,
6339 are permitted in any medium without royalty provided the copyright
6340 notice and this notice are preserved.