libstdc++-v3/ChangeLog

   1 2021-08-09  Jonathan Wakely  <jwakely@redhat.com>
   2
   3         * include/bits/regex.h (basic_regex::transform_primary): Use
   4         _GLIBCXX_STD_C::vector for local variable.
   5         * include/bits/regex.tcc (__regex_algo_impl): Use reference to
   6         _GLIBCXX_STD_C::vector base class of match_results.
   7         * include/bits/regex_automaton.tcc (_StateSeq:_M_clone): Use
   8         _GLIBCXX_STD_C::map and _GLIBCXX_STD_C::deque for local
   9         variables.
  10         * include/bits/regex_compiler.h (_BracketMatcher): Use
  11         _GLIBCXX_STD_C::vector for data members.
  12         * include/bits/regex_executor.h (_Executor): Likewise.
  13         * include/std/regex [_GLIBCXX_DEBUG]: Include <debug/vector>.
  14
  15 2021-08-09  François Dumont  <fdumont@gcc.gnu.org>
  16
  17         * include/debug/safe_container.h
  18         (_Safe_container(_Safe_container&&, const _Alloc&, std::true_type)): New.
  19         (_Safe_container(_Safe_container&&, const _Alloc&, std::false_type)): New.
  20         (_Safe_container(_Safe_container&&, const _Alloc&)): Use latters.
  21
  22 2021-08-09  Jonathan Wakely  <jwakely@redhat.com>
  23
  24         * testsuite/23_containers/unordered_map/cons/default.cc: Add
  25         equality comparison operators to allocator.
  26         * testsuite/23_containers/unordered_set/cons/default.cc:
  27         Likewise.
  28
  29 2021-08-08  François Dumont  <fdumont@gcc.gnu.org>
  30
  31         * testsuite/25_algorithms/copy/debug/constexpr_neg.cc: Replace 'failed_assertion'
  32         dg-prune-output reason with 'builtin_unreachable'.
  33         * testsuite/25_algorithms/copy_backward/debug/constexpr_neg.cc: Likewise.
  34         * testsuite/25_algorithms/equal/debug/constexpr_neg.cc: Likewise.
  35         * testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_neg.cc: Likewise.
  36         * testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_pred_neg.cc: Likewise.
  37         * testsuite/25_algorithms/lower_bound/debug/constexpr_valid_range_neg.cc: Likewise.
  38         * testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_neg.cc: Likewise.
  39         * testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_pred_neg.cc: Likewise.
  40         * testsuite/25_algorithms/upper_bound/debug/constexpr_valid_range_neg.cc: Likewise.
  41
  42 2021-08-08  Hans-Peter Nilsson  <hp@bitrange.com>
  43
  44         * testsuite/std/ranges/iota/max_size_type.cc: Set
  45         dg-timeout-factor to 4.
  46
  47 2021-08-06  Jonathan Wakely  <jwakely@redhat.com>
  48
  49         * libsupc++/compare (compare_three_way, strong_order)
  50         (weak_order, partial_order, compare_strong_order_fallback)
  51         (compare_weak_order_fallback, compare_partial_order_fallback):
  52         Move nodiscard attributes to correct location.
  53
  54 2021-08-05  Jonathan Wakely  <jwakely@redhat.com>
  55
  56         PR libstdc++/101782
  57         * include/bits/ranges_base.h (ranges::begin, ranges::end)
  58         (ranges::rbegin, ranges::rend, ranges::size, ranges::ssize)
  59         (ranges::empty, ranges::data): Move attribute after the
  60         declarator-id instead of at the end of the declarator.
  61         * include/bits/stl_iterator.h (__gnu_cxx::__normal_iterator):
  62         Move attributes back to the start of the function declarator,
  63         but move the requires-clause to the end.
  64         (common_iterator): Move attribute after the declarator-id.
  65         * include/bits/stl_queue.h (queue): Remove ill-formed attributes
  66         from friend declaration that are not definitions.
  67         * include/std/ranges (views::all, views::filter)
  68         (views::transform, views::take, views::take_while,
  69         views::drop) (views::drop_while, views::join,
  70         views::lazy_split) (views::split, views::counted,
  71         views::common, views::reverse) (views::elements): Move
  72         attributes after the declarator-id.
  73
  74 2021-08-05  Jonathan Wakely  <jwakely@redhat.com>
  75
  76         * libsupc++/compare (partial_ordering, weak_ordering)
  77         (strong_ordering, is_eq, is_neq, is_lt, is_lteq, is_gt, is_gteq)
  78         (compare_three_way, strong_order, weak_order, partial_order)
  79         (compare_strong_order_fallback, compare_weak_order_fallback)
  80         (compare_partial_order_fallback, __detail::__synth3way): Add
  81         nodiscard attribute.
  82         * testsuite/18_support/comparisons/categories/zero_neg.cc: Add
  83         -Wno-unused-result to options.
  84
  85 2021-08-05  Jonathan Wakely  <jwakely@redhat.com>
  86
  87         PR libstdc++/101782
  88         * include/bits/ranges_base.h (ranges::begin, ranges::end)
  89         (ranges::rbegin, ranges::rend, ranges::size, ranges::ssize)
  90         (ranges::empty, ranges::data): Move attribute to the end of
  91         the declarator.
  92         * include/bits/stl_iterator.h (__gnu_cxx::__normal_iterator)
  93         (common_iterator): Likewise for non-member operator functions.
  94         * include/std/ranges (views::all, views::filter)
  95         (views::transform, views::take, views::take_while, views::drop)
  96         (views::drop_while, views::join, views::lazy_split)
  97         (views::split, views::counted, views::common, views::reverse)
  98         (views::elements): Likewise.
  99         * testsuite/std/ranges/access/101782.cc: New test.
 100
 101 2021-08-04  Jonathan Wakely  <jwakely@redhat.com>
 102
 103         * include/bits/forward_list.h: Add [[nodiscard]] to functions
 104         with no side-effects.
 105         * include/bits/stl_bvector.h: Likewise.
 106         * include/bits/stl_deque.h: Likewise.
 107         * include/bits/stl_list.h: Likewise.
 108         * include/bits/stl_queue.h: Likewise.
 109         * include/bits/stl_stack.h: Likewise.
 110         * include/bits/stl_vector.h: Likewise.
 111         * include/debug/deque: Likewise.
 112         * include/debug/forward_list: Likewise.
 113         * include/debug/list: Likewise.
 114         * include/debug/safe_iterator.h: Likewise.
 115         * include/debug/vector: Likewise.
 116         * include/std/array: Likewise.
 117         * testsuite/23_containers/array/creation/3_neg.cc: Use
 118         -Wno-unused-result.
 119         * testsuite/23_containers/array/debug/back1_neg.cc: Cast result
 120         to void.
 121         * testsuite/23_containers/array/debug/back2_neg.cc: Likewise.
 122         * testsuite/23_containers/array/debug/front1_neg.cc: Likewise.
 123         * testsuite/23_containers/array/debug/front2_neg.cc: Likewise.
 124         * testsuite/23_containers/array/debug/square_brackets_operator1_neg.cc:
 125         Likewise.
 126         * testsuite/23_containers/array/debug/square_brackets_operator2_neg.cc:
 127         Likewise.
 128         * testsuite/23_containers/array/tuple_interface/get_neg.cc:
 129         Adjust dg-error line numbers.
 130         * testsuite/23_containers/deque/cons/clear_allocator.cc: Cast
 131         result to void.
 132         * testsuite/23_containers/deque/debug/invalidation/4.cc:
 133         Likewise.
 134         * testsuite/23_containers/deque/types/1.cc: Use
 135         -Wno-unused-result.
 136         * testsuite/23_containers/list/types/1.cc: Cast result to void.
 137         * testsuite/23_containers/priority_queue/members/7161.cc:
 138         Likewise.
 139         * testsuite/23_containers/queue/members/7157.cc: Likewise.
 140         * testsuite/23_containers/vector/59829.cc: Likewise.
 141         * testsuite/23_containers/vector/ext_pointer/types/1.cc:
 142         Likewise.
 143         * testsuite/23_containers/vector/ext_pointer/types/2.cc:
 144         Likewise.
 145         * testsuite/23_containers/vector/types/1.cc: Use
 146         -Wno-unused-result.
 147
 148 2021-08-04  Jonathan Wakely  <jwakely@redhat.com>
 149
 150         * include/bits/iterator_concepts.h (iter_move): Add
 151         [[nodiscard]].
 152         * include/bits/range_access.h (begin, end, cbegin, cend)
 153         (rbegin, rend, crbegin, crend, size, data, ssize): Likewise.
 154         * include/bits/ranges_base.h (ranges::begin, ranges::end)
 155         (ranges::cbegin, ranges::cend, ranges::rbegin, ranges::rend)
 156         (ranges::crbegin, ranges::crend, ranges::size, ranges::ssize)
 157         (ranges::empty, ranges::data, ranges::cdata): Likewise.
 158         * include/bits/stl_iterator.h (reverse_iterator, __normal_iterator)
 159         (back_insert_iterator, front_insert_iterator, insert_iterator)
 160         (move_iterator, move_sentinel, common_iterator)
 161         (counted_iterator): Likewise.
 162         * include/bits/stl_iterator_base_funcs.h (distance, next, prev):
 163         Likewise.
 164         * include/bits/stream_iterator.h (istream_iterator)
 165         (ostream_iterartor): Likewise.
 166         * include/bits/streambuf_iterator.h (istreambuf_iterator)
 167         (ostreambuf_iterator): Likewise.
 168         * include/std/ranges (views::single, views::iota, views::all)
 169         (views::filter, views::transform, views::take, views::take_while)
 170         (views::drop, views::drop_while, views::join, views::lazy_split)
 171         (views::split, views::counted, views::common, views::reverse)
 172         (views::elements): Likewise.
 173         * testsuite/20_util/rel_ops.cc: Use -Wno-unused-result.
 174         * testsuite/24_iterators/move_iterator/greedy_ops.cc: Likewise.
 175         * testsuite/24_iterators/normal_iterator/greedy_ops.cc:
 176         Likewise.
 177         * testsuite/24_iterators/reverse_iterator/2.cc: Likewise.
 178         * testsuite/24_iterators/reverse_iterator/greedy_ops.cc:
 179         Likewise.
 180         * testsuite/21_strings/basic_string/range_access/char/1.cc:
 181         Cast result to void.
 182         * testsuite/21_strings/basic_string/range_access/wchar_t/1.cc:
 183         Likewise.
 184         * testsuite/21_strings/basic_string_view/range_access/char/1.cc:
 185         Likewise.
 186         * testsuite/21_strings/basic_string_view/range_access/wchar_t/1.cc:
 187         Likewise.
 188         * testsuite/23_containers/array/range_access.cc: Likewise.
 189         * testsuite/23_containers/deque/range_access.cc: Likewise.
 190         * testsuite/23_containers/forward_list/range_access.cc:
 191         Likewise.
 192         * testsuite/23_containers/list/range_access.cc: Likewise.
 193         * testsuite/23_containers/map/range_access.cc: Likewise.
 194         * testsuite/23_containers/multimap/range_access.cc: Likewise.
 195         * testsuite/23_containers/multiset/range_access.cc: Likewise.
 196         * testsuite/23_containers/set/range_access.cc: Likewise.
 197         * testsuite/23_containers/unordered_map/range_access.cc:
 198         Likewise.
 199         * testsuite/23_containers/unordered_multimap/range_access.cc:
 200         Likewise.
 201         * testsuite/23_containers/unordered_multiset/range_access.cc:
 202         Likewise.
 203         * testsuite/23_containers/unordered_set/range_access.cc:
 204         Likewise.
 205         * testsuite/23_containers/vector/range_access.cc: Likewise.
 206         * testsuite/24_iterators/customization_points/iter_move.cc:
 207         Likewise.
 208         * testsuite/24_iterators/istream_iterator/sentinel.cc:
 209         Likewise.
 210         * testsuite/24_iterators/istreambuf_iterator/sentinel.cc:
 211         Likewise.
 212         * testsuite/24_iterators/move_iterator/dr2061.cc: Likewise.
 213         * testsuite/24_iterators/operations/prev_neg.cc: Likewise.
 214         * testsuite/24_iterators/ostreambuf_iterator/2.cc: Likewise.
 215         * testsuite/24_iterators/range_access/range_access.cc:
 216         Likewise.
 217         * testsuite/24_iterators/range_operations/100768.cc: Likewise.
 218         * testsuite/26_numerics/valarray/range_access2.cc: Likewise.
 219         * testsuite/28_regex/range_access.cc: Likewise.
 220         * testsuite/experimental/string_view/range_access/char/1.cc:
 221         Likewise.
 222         * testsuite/experimental/string_view/range_access/wchar_t/1.cc:
 223         Likewise.
 224         * testsuite/ext/vstring/range_access.cc: Likewise.
 225         * testsuite/std/ranges/adaptors/take.cc: Likewise.
 226         * testsuite/std/ranges/p2259.cc: Likewise.
 227
 228 2021-08-03  Jonathan Wakely  <jwakely@redhat.com>
 229
 230         * include/bits/random.tcc (linear_congruential_engine): Do not
 231         define static constexpr members when they are implicitly inline.
 232         * include/std/ratio (ratio, __ratio_multiply, __ratio_divide)
 233         (__ratio_add, __ratio_subtract): Likewise.
 234         * include/std/type_traits (integral_constant): Likewise.
 235         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
 236         line number.
 237
 238 2021-08-03  Jonathan Wakely  <jwakely@redhat.com>
 239
 240         * testsuite/util/testsuite_common_types.h: Replace uses of
 241         tr1::unordered_map and tr1::unordered_set with their C++11
 242         equivalents.
 243         * testsuite/29_atomics/atomic/cons/assign_neg.cc: Adjust
 244         dg-error line number.
 245         * testsuite/29_atomics/atomic/cons/copy_neg.cc: Likewise.
 246         * testsuite/29_atomics/atomic_integral/cons/assign_neg.cc:
 247         Likewise.
 248         * testsuite/29_atomics/atomic_integral/cons/copy_neg.cc:
 249         Likewise.
 250         * testsuite/29_atomics/atomic_integral/operators/bitwise_neg.cc:
 251         Likewise.
 252         * testsuite/29_atomics/atomic_integral/operators/decrement_neg.cc:
 253         Likewise.
 254         * testsuite/29_atomics/atomic_integral/operators/increment_neg.cc:
 255         Likewise.
 256
 257 2021-08-03  Jonathan Wakely  <jwakely@redhat.com>
 258
 259         * include/std/memory_resource (polymorphic_allocator::delete_object):
 260         Call destructor directly instead of using destroy.
 261         (allocator_traits<polymorphic_allocator<T>>): Define partial
 262         specialization.
 263
 264 2021-08-03  Jonathan Wakely  <jwakely@redhat.com>
 265
 266         * testsuite/20_util/function_objects/binders/3113.cc: Remove
 267         trailing whitespace.
 268         * testsuite/20_util/shared_ptr/assign/auto_ptr.cc: Likewise.
 269         * testsuite/20_util/shared_ptr/assign/auto_ptr_neg.cc: Likewise.
 270         * testsuite/20_util/shared_ptr/assign/auto_ptr_rvalue.cc:
 271         Likewise.
 272         * testsuite/20_util/shared_ptr/creation/dr925.cc: Likewise.
 273         * testsuite/25_algorithms/headers/algorithm/synopsis.cc:
 274         Likewise.
 275         * testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/2.cc:
 276         Likewise.
 277         * testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/pod.cc:
 278         Likewise.
 279
 280 2021-08-03  Jonathan Wakely  <jwakely@redhat.com>
 281
 282         * doc/xml/manual/evolution.xml: Document deprecation.
 283         * doc/html/*: Regenerate.
 284         * include/bits/c++config (_GLIBCXX14_DEPRECATED): Define.
 285         (_GLIBCXX14_DEPRECATED_SUGGEST): Define.
 286         * include/bits/stl_algo.h (random_shuffle): Deprecate for C++14
 287         and later.
 288         * testsuite/25_algorithms/headers/algorithm/synopsis.cc: Adjust
 289         for C++11 and C++14 changes to std::random_shuffle and
 290         std::shuffle.
 291         * testsuite/25_algorithms/random_shuffle/1.cc: Add options to
 292         use deprecated algorithms.
 293         * testsuite/25_algorithms/random_shuffle/59603.cc: Likewise.
 294         * testsuite/25_algorithms/random_shuffle/moveable.cc: Likewise.
 295         * testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/2.cc:
 296         Likewise.
 297         * testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/pod.cc:
 298         Likewise.
 299
 300 2021-08-03  Jonathan Wakely  <jwakely@redhat.com>
 301
 302         * testsuite/23_containers/forward_list/operations/3.cc:
 303         Use lambda instead of std::bind2nd.
 304         * testsuite/20_util/function_objects/binders/3113.cc: Add
 305         options for testing deprecated features.
 306         * testsuite/20_util/pair/cons/99957.cc: Likewise.
 307         * testsuite/20_util/shared_ptr/assign/auto_ptr.cc: Likewise.
 308         * testsuite/20_util/shared_ptr/assign/auto_ptr_neg.cc: Likewise.
 309         * testsuite/20_util/shared_ptr/assign/auto_ptr_rvalue.cc:
 310         Likewise.
 311         * testsuite/20_util/shared_ptr/cons/43820_neg.cc: Likewise.
 312         * testsuite/20_util/shared_ptr/cons/auto_ptr.cc: Likewise.
 313         * testsuite/20_util/shared_ptr/cons/auto_ptr_neg.cc: Likewise.
 314         * testsuite/20_util/shared_ptr/creation/dr925.cc: Likewise.
 315         * testsuite/20_util/unique_ptr/cons/auto_ptr.cc: Likewise.
 316         * testsuite/20_util/unique_ptr/cons/auto_ptr_neg.cc: Likewise.
 317         * testsuite/ext/pb_ds/example/priority_queue_erase_if.cc:
 318         Likewise.
 319         * testsuite/ext/pb_ds/example/priority_queue_split_join.cc:
 320         Likewise.
 321         * testsuite/lib/dg-options.exp (dg_add_options_using-deprecated):
 322         New proc.
 323
 324 2021-08-03  Jonathan Wakely  <jwakely@redhat.com>
 325
 326         * include/bits/regex_executor.h (_State_info): Replace
 327         unique_ptr<bool[]> with array of bool.
 328         * include/bits/regex_executor.tcc: Likewise.
 329         * include/bits/regex_scanner.tcc: Replace std::strchr with
 330         __builtin_strchr.
 331         * include/std/regex: Replace standard headers with smaller
 332         internal ones.
 333         * testsuite/28_regex/traits/char/lookup_classname.cc: Include
 334         <string.h> for strlen.
 335         * testsuite/28_regex/traits/char/lookup_collatename.cc:
 336         Likewise.
 337
 338 2021-08-03  Jonathan Wakely  <jwakely@redhat.com>
 339
 340         * include/bits/locale_conv.h (__detail::_Scoped_ptr): Define new
 341         RAII class template.
 342         (wstring_convert, wbuffer_convert): Use __detail::_Scoped_ptr
 343         instead of unique_ptr.
 344
 345 2021-08-02  Patrick Palka  <ppalka@redhat.com>
 346
 347         PR libstdc++/101599
 348         * include/bits/ranges_algo.h (__reverse_copy_fn::operator()):
 349         Add missing std::move in return statement.
 350         (__partition_copy_fn::operator()): Rename templtae parameter
 351         _O2 to _Out2.  Uglify function parameters out_true and out_false.
 352         * include/bits/ranges_algobase.h (__copy_or_move): Add missing
 353         std::move to recursive call that unwraps a __normal_iterator
 354         output iterator.
 355         * testsuite/25_algorithms/copy/constrained.cc (test06): New test.
 356         * testsuite/25_algorithms/move/constrained.cc (test05): New test.
 357
 358 2021-08-02  Patrick Palka  <ppalka@redhat.com>
 359
 360         PR libstdc++/101589
 361         * include/std/ranges (lazy_split_view::_InnerIter::base): Make
 362         the const& overload unconstrained and return a const reference
 363         as per LWG 3533.  Make unconditionally noexcept.
 364         (elements_view::base): Revert accidental r12-569 change.
 365         (elements_view::_Iterator::base): Make the const& overload
 366         unconstrained and return a const reference as per LWG 3533.
 367         Make unconditionally noexcept.
 368
 369 2021-08-02  Patrick Palka  <ppalka@redhat.com>
 370
 371         PR libstdc++/101483
 372         * include/std/ranges (join_view::_Iterator::_Iterator): Add
 373         missing std::move.
 374
 375 2021-08-02  Jonathan Wakely  <jwakely@redhat.com>
 376
 377         PR libstdc++/101709
 378         * src/filesystem/ops-common.h (get_temp_directory_from_env):
 379         Add error_code parameter.
 380         * src/c++17/fs_ops.cc (fs::temp_directory_path): Pass error_code
 381         argument to get_temp_directory_from_env and check it.
 382         * src/filesystem/ops.cc (fs::temp_directory_path): Likewise.
 383
 384 2021-08-02  Jonathan Wakely  <jwakely@redhat.com>
 385
 386         * testsuite/20_util/tuple/comparison_operators/overloaded2.cc:
 387         Add dg-error for c++11_only target.
 388
 389 2021-07-30  Jonathan Wakely  <jwakely@redhat.com>
 390
 391         PR libstdc++/65018
 392         * configure.ac: Check for secure_getenv.
 393         * config.h.in: Regenerate.
 394         * configure: Regenerate.
 395         * src/filesystem/ops-common.h (get_temp_directory_from_env): New
 396         helper function to obtain path from the environment.
 397         * src/c++17/fs_ops.cc (fs::temp_directory_path): Use new helper.
 398         * src/filesystem/ops.cc (fs::temp_directory_path): Likewise.
 399         * testsuite/27_io/filesystem/operations/temp_directory_path.cc:
 400         Print messages if test cannot be run.
 401         * testsuite/experimental/filesystem/operations/temp_directory_path.cc:
 402         Likewise. Fix incorrect condition. Use "TMP" to work with
 403         Windows as well as POSIX.
 404
 405 2021-07-29  Hans-Peter Nilsson  <hp@bitrange.com>
 406
 407         * src/c++17/memory_resource.cc: Use __exchange instead
 408         of std::exchange.
 409
 410 2021-07-27  Jonathan Wakely  <jwakely@redhat.com>
 411
 412         * include/experimental/optional (__throw_bad_optional_access):
 413         Replace GNU attribute with C++11 attribute.
 414         (optional::value, optional::value_or): Use if statements
 415         instead of conditional expressions.
 416         * include/std/optional (__throw_bad_optional_access)
 417         (optional::value, optional::value_or): Likewise.
 418
 419 2021-07-27  Marek Polacek  <polacek@redhat.com>
 420
 421         DR 1512
 422         PR c++/99701
 423         * testsuite/20_util/tuple/comparison_operators/overloaded.cc:
 424         Move a line...
 425         * testsuite/20_util/tuple/comparison_operators/overloaded2.cc:
 426         ...here.  New test.
 427
 428 2021-07-27  Jonathan Wakely  <jwakely@redhat.com>
 429
 430         * include/bits/cow_string.h: Consistently use tab for
 431         indentation.
 432
 433 2021-07-27  Jonathan Wakely  <jwakely@redhat.com>
 434
 435         * include/Makefile.am: Add new header.
 436         * include/Makefile.in: Regenerate.
 437         * include/bits/basic_string.h [!_GLIBCXX_USE_CXX11_ABI]
 438         (basic_string): Move definition of Copy-on-Write string to
 439         new file.
 440         * include/bits/basic_string.tcc: Likewise.
 441         * include/bits/cow_string.h: New file.
 442
 443 2021-07-27  Jonathan Wakely  <jwakely@redhat.com>
 444
 445         * include/std/algorithm: Do not include <utility>.
 446         * include/std/functional: Likewise.
 447         * include/std/regex: Include <bits/stl_pair.h> instead of
 448         <utility>.
 449         * include/debug/map.h: Likewise.
 450         * include/debug/multimap.h: Likewise.
 451         * include/debug/multiset.h: Likewise.
 452         * include/debug/set.h: Likewise.
 453         * include/debug/vector: Likewise.
 454         * include/bits/fs_path.h: Likewise.
 455         * include/bits/unique_ptr.h: Do not include <utility>.
 456         * include/experimental/any: Likewise.
 457         * include/experimental/executor: Likewise.
 458         * include/experimental/memory: Likewise.
 459         * include/experimental/optional: Likewise.
 460         * include/experimental/socket: Use __exchange instead
 461         of std::exchange.
 462         * src/filesystem/ops-common.h: Likewise.
 463         * testsuite/20_util/default_delete/48631_neg.cc: Adjust expected
 464         errors to not use a hardcoded line number.
 465         * testsuite/20_util/default_delete/void_neg.cc: Likewise.
 466         * testsuite/20_util/specialized_algorithms/uninitialized_copy/constrained.cc:
 467         Include <utility> for std::as_const.
 468         * testsuite/20_util/specialized_algorithms/uninitialized_default_construct/constrained.cc:
 469         Likewise.
 470         * testsuite/20_util/specialized_algorithms/uninitialized_move/constrained.cc:
 471         Likewise.
 472         * testsuite/20_util/specialized_algorithms/uninitialized_value_construct/constrained.cc:
 473         Likewise.
 474         * testsuite/23_containers/vector/cons/destructible_debug_neg.cc:
 475         Adjust dg-error line number.
 476
 477 2021-07-27  Jonathan Wakely  <jwakely@redhat.com>
 478
 479         * include/Makefile.am: Add bits/utility.h header.
 480         * include/Makefile.in: Regenerate.
 481         * include/bits/utility.h: New file.
 482         * include/std/utility (tuple_size, tuple_element): Move
 483         to new header.
 484         * include/std/type_traits (__is_tuple_like_impl<tuple<T...>>):
 485         Move to <tuple>.
 486         (_Index_tuple, _Build_index_tuple, integer_sequence): Likewise.
 487         (in_place_t, in_place_index_t, in_place_type_t): Likewise.
 488         * include/bits/ranges_util.h: Include new header instead of
 489         <utility>.
 490         * include/bits/stl_pair.h (tuple_size, tuple_element): Move
 491         partial specializations for std::pair here.
 492         (get): Move overloads for std::pair here.
 493         * include/std/any: Include new header instead of <utility>.
 494         * include/std/array: Likewise.
 495         * include/std/memory_resource: Likewise.
 496         * include/std/optional: Likewise.
 497         * include/std/variant: Likewise.
 498         * include/std/tuple: Likewise.
 499         (__is_tuple_like_impl<tuple<T...>>): Move here.
 500         (get) Declare overloads for std::array.
 501         * include/std/version (__cpp_lib_tuples_by_type): Change type
 502         to long.
 503         * testsuite/20_util/optional/84601.cc: Include <utility>.
 504         * testsuite/20_util/specialized_algorithms/uninitialized_fill/constrained.cc:
 505         Likewise.
 506         * testsuite/23_containers/array/tuple_interface/get_neg.cc:
 507         Adjust dg-error line numbers.
 508         * testsuite/std/ranges/access/cbegin.cc: Include <utility>.
 509         * testsuite/std/ranges/access/cend.cc: Likewise.
 510         * testsuite/std/ranges/access/end.cc: Likewise.
 511         * testsuite/std/ranges/single_view.cc: Likewise.
 512
 513 2021-07-23  Jonathan Wakely  <jwakely@redhat.com>
 514
 515         * include/std/future: Include <bits/atomic_base.h> instead of
 516         <atomic>.
 517
 518 2021-07-23  Jonathan Wakely  <jwakely@redhat.com>
 519
 520         * include/bits/stl_relops.h: Update documentation comments.
 521
 522 2021-07-22  Jonathan Wakely  <jwakely@redhat.com>
 523
 524         PR libstdc++/101583
 525         * include/bits/hashtable.h (_Hashtable): Replace mixin with
 526         _Enable_default_ctor. Construct it explicitly in all
 527         non-forwarding, non-defaulted constructors.
 528         * testsuite/23_containers/unordered_map/cons/default.cc: Check
 529         non-default constructors can be used.
 530         * testsuite/23_containers/unordered_set/cons/default.cc:
 531         Likewise.
 532
 533 2021-07-22  David Edelsohn  <dje.gcc@gmail.com>
 534
 535         * config/os/aix/os_defines.h (__LIBC_NO_CPP_MATH_OVERLOADS__): Define.
 536
 537 2021-07-22  Jonathan Wakely  <jwakely@redhat.com>
 538
 539         PR libstdc++/94295
 540         * include/ext/new_allocator.h (_GLIBCXX_OPERATOR_NEW)
 541         (_GLIBCXX_OPERATOR_DELETE, _GLIBCXX_SIZED_DEALLOC): Define.
 542         (allocator::allocate, allocator::deallocate): Use new macros.
 543
 544 2021-07-22  Jonathan Wakely  <jwakely@redhat.com>
 545
 546         PR libstdc++/101571
 547         * include/bits/ranges_uninitialized.h (_DestroyGuard): Change
 548         constructor parameter to reference and use addressof.
 549         * testsuite/util/testsuite_iterators.h: Define deleted operator&
 550         overloads for test iterators.
 551
 552 2021-07-22  Jonathan Wakely  <jwakely@redhat.com>
 553
 554         * include/bits/std_function.h (_Function_base): Add
 555         default member initializers and define constructor as defaulted.
 556         (function::_M_invoker): Add default member initializer.
 557
 558 2021-07-22  Jonathan Wakely  <jwakely@redhat.com>
 559
 560         PR libstdc++/100682
 561         * doc/xml/manual/debug_mode.xml: Update documentation about
 562         debug capability of std::array.
 563         * doc/html/*: Regenerate.
 564         * include/debug/array: New file.
 565
 566 2021-07-21  Jonathan Wakely  <jwakely@redhat.com>
 567
 568         PR libstdc++/101542
 569         * include/ext/rope (sequence_buffer): Add move constructor and
 570         move assignment operator.
 571         * testsuite/ext/rope/101542.cc: New test.
 572
 573 2021-07-20  Jonathan Wakely  <jwakely@redhat.com>
 574
 575         PR libstdc++/101510
 576         * src/c++17/fs_ops.cc (fs::create_directories): Use status
 577         instead of symlink_status.
 578         * src/filesystem/ops.cc (fs::create_directories): Likewise.
 579         * testsuite/27_io/filesystem/operations/create_directories.cc:
 580         * testsuite/27_io/filesystem/operations/create_directory.cc: Do
 581         not test with symlinks on Windows.
 582         * testsuite/experimental/filesystem/operations/create_directories.cc:
 583         * testsuite/experimental/filesystem/operations/create_directory.cc:
 584         Do not test with symlinks on Windows.
 585
 586 2021-07-20  Jonathan Wakely  <jwakely@redhat.com>
 587
 588         PR libstdc++/100863
 589         * include/bits/hashtable.h (_Hashtable): Conditionally delete
 590         default constructor by deriving from _Enable_special_members.
 591         * testsuite/23_containers/unordered_map/cons/default.cc: New test.
 592         * testsuite/23_containers/unordered_set/cons/default.cc: New test.
 593
 594 2021-07-20  Jonathan Wakely  <jwakely@redhat.com>
 595
 596         PR libstdc++/101510
 597         * src/c++17/fs_ops.cc (create_dir): Adjust whitespace.
 598         * testsuite/27_io/filesystem/operations/create_directory.cc:
 599         Test creating directory with name of existing symlink to
 600         directory.
 601         * testsuite/experimental/filesystem/operations/create_directory.cc:
 602         Likewise.
 603
 604 2021-07-16  Jonathan Wakely  <jwakely@redhat.com>
 605
 606         * include/std/tuple (get<I>): Add deleted overload for bad
 607         index.
 608         * testsuite/20_util/tuple/element_access/get_neg.cc: Adjust
 609         expected errors.
 610
 611 2021-07-16  Jonathan Wakely  <jwakely@redhat.com>
 612
 613         * include/bits/max_size_type.h (numeric_limits<__max_size_type>):
 614         Use __int_traits unconditionally.
 615
 616 2021-07-16  Jonathan Wakely  <jwakely@redhat.com>
 617
 618         * include/bits/random.h (_Shift::__value): Use constexpr.
 619         (_Select_uint_least_t::type): Use using-declaration.
 620         (_Mod): Likewise.
 621         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
 622         line number.
 623
 624 2021-07-16  Jonathan Wakely  <jwakely@redhat.com>
 625
 626         * include/bits/cpp_type_traits.h (__INT_N): Use __extension__
 627         instead of diagnostic pragmas.
 628         * include/bits/functional_hash.h: Likewise.
 629         * include/bits/iterator_concepts.h (__is_signed_int128)
 630         (__is_unsigned_int128): Likewise.
 631         * include/bits/max_size_type.h (__max_size_type): Likewise.
 632         (numeric_limits<__max_size_type>): Likewise.
 633         * include/bits/std_abs.h (abs): Likewise.
 634         * include/bits/stl_algobase.h (__size_to_integer): Likewise.
 635         * include/bits/uniform_int_dist.h (uniform_int_distribution):
 636         Likewise.
 637         * include/ext/numeric_traits.h (_GLIBCXX_INT_N_TRAITS):
 638         Likewise.
 639         * include/std/type_traits (__is_integral_helper<INT_N>)
 640         (__is_signed_integer, __is_unsigned_integer)
 641         (__make_unsigned<INT_N>, __make_signed<INT_N>): Likewise.
 642         * include/std/limits (__INT_N): Add __extension__ keyword.
 643         * include/bits/random.h (_Select_uint_least_t)
 644         (random_device): Likewise.
 645
 646 2021-07-16  Patrick Palka  <ppalka@redhat.com>
 647
 648         PR libstdc++/101231
 649         * include/std/ranges (_CachedPosition::_M_get): For non-forward
 650         ranges, just call __builtin_unreachable.
 651         * testsuite/std/ranges/istream_view.cc (test05): New test.
 652
 653 2021-07-16  Patrick Palka  <ppalka@redhat.com>
 654
 655         PR libstdc++/101214
 656         * include/std/ranges (split_view::split_view): Use std::move.
 657         (split_view::_Iterator::_Iterator): Remove redundant
 658         default_initializable constraint.
 659         (split_view::_Sentinel::_Sentinel): Declare.
 660         * testsuite/std/ranges/adaptors/split.cc (test02): New test.
 661
 662 2021-07-16  Marek Polacek  <polacek@redhat.com>
 663
 664         * testsuite/20_util/ratio/operations/ops_overflow_neg.cc: Add
 665         dg-error.
 666
 667 2021-07-16  Jonathan Wakely  <jwakely@redhat.com>
 668
 669         * include/bits/unique_ptr.h: Adjust doxygen markup.
 670
 671 2021-07-16  Jonathan Wakely  <jwakely@redhat.com>
 672
 673         PR libstdc++/101307
 674         * include/std/type_traits: Adjust doxygen markup.
 675
 676 2021-07-16  Jonathan Wakely  <jwakely@redhat.com>
 677
 678         * include/bits/cpp_type_traits.h: Add diagnostic pragmas around
 679         uses of non-standard integer types.
 680         * include/bits/functional_hash.h: Likewise.
 681         * include/bits/iterator_concepts.h: Likewise.
 682         * include/bits/max_size_type.h: Likewise.
 683         * include/bits/std_abs.h: Likewise.
 684         * include/bits/stl_algobase.h: Likewise.
 685         * include/bits/uniform_int_dist.h: Likewise.
 686         * include/ext/numeric_traits.h: Likewise.
 687         * include/std/type_traits: Likewise.
 688
 689 2021-07-15  Jonathan Wakely  <jwakely@redhat.com>
 690
 691         PR libstdc++/101427
 692         * include/std/tuple (tuple_element): Improve static_assert text.
 693         (__get_helper): Add deleted overload.
 694         (get<i>(tuple<T...>&&), get<i>(const tuple<T...>&&)): Use
 695         __get_helper directly.
 696         (__get_helper2): Remove.
 697         (__find_uniq_type_in_pack): New constexpr helper function.
 698         (get<T>): Use __find_uniq_type_in_pack and __get_helper instead
 699         of __get_helper2.
 700         * testsuite/20_util/tuple/element_access/get_neg.cc: Adjust
 701         expected errors.
 702         * testsuite/20_util/tuple/element_access/101427.cc: New test.
 703
 704 2021-07-15  Jonathan Wakely  <jwakely@redhat.com>
 705
 706         PR libstdc++/101429
 707         * include/bits/c++config (__replacement_assert): Add noexcept.
 708         [!_GLIBCXX_VERBOSE] (__glibcxx_assert_impl): Use __builtin_abort
 709         instead of __replacement_assert.
 710
 711 2021-07-14  Jonathan Wakely  <jwakely@redhat.com>
 712
 713         * include/std/string_view (basic_string_view(It, End)): Add
 714         noexcept-specifier.
 715         * testsuite/21_strings/basic_string_view/cons/char/range.cc:
 716         Check noexcept-specifier. Also check construction without CTAD.
 717
 718 2021-07-13  Jonathan Wakely  <jwakely@redhat.com>
 719
 720         PR c++/101361
 721         * include/std/string_view (ends_with): Use traits_type::compare
 722         directly.
 723
 724 2021-07-13  Jonathan Wakely  <jwakely@redhat.com>
 725
 726         * include/std/string_view: Only include <bits/ranges_base.h>
 727         once, and only for C++20 and later.
 728
 729 2021-07-12  Jonathan Wakely  <jwakely@redhat.com>
 730
 731         PR libstdc++/101411
 732         * include/std/span (as_writable_bytes): Add requires-clause.
 733         * testsuite/23_containers/span/101411.cc: New test.
 734
 735 2021-07-09  Matheus Castanho  <msc@linux.ibm.com>
 736
 737         * include/std/mutex (__lock_impl): Check
 738         _GLIBCXX_HAS_GTHREADS before using __gthread_yield.
 739
 740 2021-07-02  Jonathan Wakely  <jwakely@redhat.com>
 741
 742         PR libstdc++/101271
 743         * include/bits/unique_ptr.h (unique_ptr<T[],D>::operator[]):
 744         Remove noexcept-specifier.
 745         (unique_ptr<T[],D>::_S_nothrow_deref): Remove.
 746         * testsuite/20_util/unique_ptr/lwg2762.cc: Remove checks for
 747         operator[].
 748
 749 2021-07-01  Jonathan Wakely  <jwakely@redhat.com>
 750
 751         * doc/doxygen/doxygroups.cc: Fix docs for std::literals.
 752         * doc/doxygen/user.cfg.in: Exclude the Networking TS header.
 753         Add some more predefined macros.
 754         * include/bits/fs_fwd.h: Move @addtogroup commands inside
 755         namespaces. Add better documentation.
 756         * include/bits/fs_path.h: Likewise.
 757         * include/experimental/bits/fs_fwd.h: Likewise.
 758         * include/experimental/bits/fs_path.h: Likewise.
 759         * include/ext/throw_allocator.h: Fix typo and improve docs.
 760         * include/std/chrono: Move @addtogroup commands.
 761         * include/std/system_error: Move @addtogroup commands.
 762         * libsupc++/exception: Improve documentation.
 763         * libsupc++/exception.h: Add @since documentation.
 764
 765 2021-06-30  Jonathan Wakely  <jwakely@redhat.com>
 766
 767         PR libstdc++/101258
 768         * doc/doxygen/user.cfg.in (INPUT): Add <experimental/simd>.
 769         (COLS_IN_ALPHA_INDEX): Remove obsolete tag.
 770         (PREDEFINED): Add/fix some more macros that need to be expanded.
 771         * include/bits/random.h: Stop Doxygen from documenting internal
 772         implementation details.
 773         * include/bits/random.tcc: Likewise.
 774         * include/bits/this_thread_sleep.h: Fix @file name.
 775         * include/experimental/bits/simd.h: Add to Doxygen group. Do not
 776         document internal implementation details.
 777         * include/experimental/bits/simd_detail.h: Do not document
 778         internal implementation details.
 779         * include/experimental/simd: Define Doxygen groups.
 780         * include/experimental/type_traits: Improve documentation for
 781         the header file. Define groups. Use @since commands.
 782         * include/std/scoped_allocator (scoped_allocator_adaptor): Move
 783         declaration before undocumented region.
 784         * include/std/type_traits (true_type, false_type): Use using
 785         declaration instead of typedef.
 786         (is_invocable_v, is_nothrow_invocable_v, is_invocable_r_v)
 787         (is_nothrow_invocable_r_v): Move definitions next to other C++17
 788         variable templates.
 789         Do not document internal implementation details. Move misplaced
 790         group-end command. Define group for variable templates.
 791         * include/std/variant: Do not document internal implementation
 792         details.
 793         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
 794         line number.
 795
 796 2021-06-30  Jonathan Wakely  <jwakely@redhat.com>
 797
 798         * include/experimental/simd: Do not define anything pre-C++17.
 799
 800 2021-06-30  Jonathan Wakely  <jwakely@redhat.com>
 801
 802         * include/bits/random.tcc [__cpp_inline_variables]: Remove
 803         redundant definitions of static constexpr member variables.
 804         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
 805         line number.
 806
 807 2021-06-28  Jonathan Wakely  <jwakely@redhat.com>
 808
 809         * include/bits/streambuf.tcc (__copy_streambufs_eof): Remove
 810         explicit instantiation declarations.
 811         * src/c++11/streambuf-inst.cc (__copy_streambufs_eof): Remove
 812         explicit instantiation definitions.
 813
 814 2021-06-28  Jonathan Wakely  <jwakely@redhat.com>
 815
 816         PR libstdc++/97088
 817         * testsuite/17_intro/names.cc: Fix #if condition for names used
 818         by newlib headers.
 819
 820 2021-06-28  Jonathan Wakely  <jwakely@redhat.com>
 821
 822         PR libstdc++/101236
 823         * include/bits/unique_ptr.h (unique_ptr<T[], D>::operator[]):
 824         Fail gracefully if element_type is incomplete.
 825         * testsuite/20_util/unique_ptr/cons/incomplete.cc: Clarify that
 826         the standard doesn't require this test to work for array types.
 827         * testsuite/20_util/unique_ptr/lwg2762.cc: Check that incomplete
 828         types can be used with array specialization.
 829         * testsuite/20_util/unique_ptr/101236.cc: New test.
 830
 831 2021-06-28  Jonathan Wakely  <jwakely@redhat.com>
 832
 833         * doc/xml/manual/intro.xml: Document LWG 415 change.
 834         * doc/html/manual/bugs.html: Regenerate.
 835         * include/bits/istream.tcc (ws): Create sentry and catch
 836         exceptions.
 837         * testsuite/27_io/basic_istream/ws/char/lwg415.cc: New test.
 838         * testsuite/27_io/basic_istream/ws/wchar_t/lwg415.cc: New test.
 839
 840 2021-06-25  Jonathan Wakely  <jwakely@redhat.com>
 841
 842         * include/bits/ostream.tcc (basic_ostream::write): Call sputn
 843         directly instead of using _M_write. Do setstate(__err) all
 844         outside the try-catch block.
 845         * include/std/ostream (basic_ostream::_M_write): Declare
 846         private. Use __ostream_insert. Do not define for the versioned
 847         namespace.
 848
 849 2021-06-25  Jonathan Wakely  <jwakely@redhat.com>
 850
 851         * doc/xml/manual/intro.xml: Document LWG 581 change.
 852         * doc/html/manual/bugs.html: Regenerate.
 853         * include/bits/basic_ios.tcc: Whitespace.
 854         * include/bits/ostream.tcc (basic_ostream::flush()): Construct
 855         sentry.
 856         * testsuite/27_io/basic_ostream/flush/char/2.cc: Check
 857         additional cases.
 858         * testsuite/27_io/basic_ostream/flush/char/exceptions_badbit_throw.cc:
 859         Likewise.
 860         * testsuite/27_io/basic_ostream/flush/wchar_t/2.cc: Likewise.
 861         * testsuite/27_io/basic_ostream/flush/wchar_t/exceptions_badbit_throw.cc:
 862         Likewise.
 863
 864 2021-06-25  Jonathan Wakely  <jwakely@redhat.com>
 865
 866         * include/bits/ostream.tcc (sentry): Only set failbit if badbit
 867         is set, not if eofbit is set.
 868         (tellp, seekp, seekp): Create sentry object. Do not set badbit
 869         on exceptions.
 870         * testsuite/27_io/basic_ostream/seekp/char/exceptions_badbit_throw.cc:
 871         Adjust expected behaviour.
 872         * testsuite/27_io/basic_ostream/seekp/wchar_t/exceptions_badbit_throw.cc:
 873         Likewise.
 874         * testsuite/27_io/basic_ostream/tellp/char/exceptions_badbit_throw.cc:
 875         Likewise.
 876         * testsuite/27_io/basic_ostream/tellp/wchar_t/exceptions_badbit_throw.cc:
 877         Likewise.
 878         * testsuite/27_io/basic_ostream/seekp/char/n3168.cc: New test.
 879         * testsuite/27_io/basic_ostream/seekp/wchar_t/n3168.cc: New test.
 880         * testsuite/27_io/basic_ostream/tellp/char/n3168.cc: New test.
 881         * testsuite/27_io/basic_ostream/tellp/wchar_t/n3168.cc: New test.
 882
 883 2021-06-25  Jonathan Wakely  <jwakely@redhat.com>
 884
 885         * include/std/syncstream (basic_syncbuf::swap()): Remove
 886         noexcept, as per LWG 3498.
 887
 888 2021-06-25  Jonathan Wakely  <jwakely@redhat.com>
 889
 890         PR libstdc++/97088
 891         * testsuite/17_intro/names.cc: Undef more names for newlib and
 892         also for arm-none-linux-gnueabi.
 893         * testsuite/experimental/names.cc: Disable PCH.
 894
 895 2021-06-25  Matthias Kretz  <m.kretz@gsi.de>
 896
 897         * include/experimental/bits/simd.h (__bit_cast): Implement via
 898         __builtin_bit_cast #if available.
 899         (__proposed::simd_bit_cast): Add overloads for simd and
 900         simd_mask, which use __builtin_bit_cast (or __bit_cast #if not
 901         available), which return an object of the requested type with
 902         the same bits as the argument.
 903         * include/experimental/bits/simd_math.h: Use simd_bit_cast
 904         instead of __bit_cast to allow casts to fixed_size_simd.
 905         (copysign): Remove branch that was only required if __bit_cast
 906         cannot be constexpr.
 907         * testsuite/experimental/simd/tests/bits/test_values.h: Switch
 908         from __bit_cast to __proposed::simd_bit_cast since the former
 909         will not cast fixed_size objects anymore.
 910
 911 2021-06-24  Matthias Kretz  <m.kretz@gsi.de>
 912
 913         * include/experimental/bits/simd_math.h
 914         (_GLIBCXX_SIMD_MATH_CALL2_): Rename arg2_ to __arg2.
 915         (_GLIBCXX_SIMD_MATH_CALL3_): Rename arg2_ to __arg2 and arg3_ to
 916         __arg3.
 917
 918 2021-06-24  Matthias Kretz  <m.kretz@gsi.de>
 919
 920         * include/experimental/bits/simd.h (__execute_on_index_sequence)
 921         (__execute_on_index_sequence_with_return)
 922         (__call_with_n_evaluations, __call_with_subscripts): Add flatten
 923         attribute.
 924
 925 2021-06-24  Matthias Kretz  <m.kretz@gsi.de>
 926
 927         * include/experimental/bits/simd_x86.h (_S_trunc, _S_floor)
 928         (_S_ceil): Set bit 8 (_MM_FROUND_NO_EXC) on AVX and SSE4.1
 929         roundp[sd] calls.
 930
 931 2021-06-24  Matthias Kretz  <m.kretz@gsi.de>
 932
 933         * include/experimental/bits/simd_x86.h (_S_ldexp): The AVX512F
 934         implementation doesn't require a _VecBltnBtmsk ABI tag, it
 935         requires either a 64-Byte input (in which case AVX512F must be
 936         available) or AVX512VL.
 937
 938 2021-06-24  Matthias Kretz  <m.kretz@gsi.de>
 939
 940         * include/experimental/bits/simd_math.h: Undefine internal
 941         macros after use.
 942         (frexp): Move #if to a more sensible position and reformat
 943         preceding code.
 944         (logb): Call _SimdImpl::_S_logb for fixed_size instead of
 945         duplicating the code here.
 946         (modf): Simplify condition.
 947
 948 2021-06-24  Matthias Kretz  <m.kretz@gsi.de>
 949
 950         * include/experimental/bits/simd_math.h (fabs): Remove
 951         fabs(simd<integral>) overload.
 952
 953 2021-06-24  Matthias Kretz  <m.kretz@gsi.de>
 954
 955         * include/experimental/bits/simd_converter.h
 956         (_SimdConverter::operator()): Pass _SimdTuple by const-ref.
 957         * include/experimental/bits/simd_fixed_size.h
 958         (_GLIBCXX_SIMD_FIXED_OP): Pass binary operator _SimdTuple
 959         arguments by const-ref.
 960         (_S_masked_unary): Pass _SimdTuple by const-ref.
 961
 962 2021-06-24  Matthias Kretz  <m.kretz@gsi.de>
 963
 964         * include/experimental/bits/simd_fixed_size.h
 965         (_AbisInSimdTuple): Removed.
 966
 967 2021-06-24  Matthias Kretz  <m.kretz@gsi.de>
 968
 969         * include/experimental/bits/simd.h: Add missing operator~
 970         overload for simd<floating-point> to __float_bitwise_operators.
 971         * include/experimental/bits/simd_builtin.h
 972         (_SimdImplBuiltin::_S_complement): Bitcast to int (and back) to
 973         implement complement for floating-point vectors.
 974         * include/experimental/bits/simd_fixed_size.h
 975         (_SimdImplFixedSize::_S_copysign): New function, forwarding to
 976         copysign implementation of _SimdTuple members.
 977         * include/experimental/bits/simd_math.h (copysign): Call
 978         _SimdImpl::_S_copysign for fixed_size arguments. Simplify
 979         generic copysign implementation using the new ~ operator.
 980
 981 2021-06-24  Jonathan Wakely  <jwakely@redhat.com>
 982
 983         * testsuite/experimental/simd/README.md: Fix typos.
 984
 985 2021-06-24  Jonathan Wakely  <jwakely@redhat.com>
 986
 987         * include/bits/shared_ptr_base.h (__shared_ptr_access::operator[]):
 988         Add noexcept.
 989         * include/bits/unique_ptr.h (unique_ptr::operator*): Add
 990         conditional noexcept as per LWG 2762.
 991         * testsuite/20_util/shared_ptr/observers/array.cc: Check that
 992         dereferencing cannot throw.
 993         * testsuite/20_util/shared_ptr/observers/get.cc: Likewise.
 994         * testsuite/20_util/optional/observers/lwg2762.cc: New test.
 995         * testsuite/20_util/unique_ptr/lwg2762.cc: New test.
 996
 997 2021-06-23  Patrick Palka  <ppalka@redhat.com>
 998
 999         PR c++/101174
1000         * testsuite/23_containers/multiset/cons/deduction.cc:
1001         Uncomment CTAD example that was rejected by this bug.
1002         * testsuite/23_containers/set/cons/deduction.cc: Likewise.
1003
1004 2021-06-23  Jonathan Wakely  <jwakely@redhat.com>
1005
1006         * include/std/chrono (chrono::year::is_leap()): Fix incorrect
1007         logic in comment.
1008
1009 2021-06-23  Matthias Kretz  <m.kretz@gsi.de>
1010
1011         * testsuite/experimental/simd/README.md: New file.
1012
1013 2021-06-23  Matthias Kretz  <m.kretz@gsi.de>
1014
1015         * testsuite/experimental/simd/driver.sh: Rewrite output
1016         verbosity logic. Add -p/--percentage option. Allow -v/--verbose
1017         to be used twice. Add -x and -o short options. Parse long
1018         options with = instead of separating space generically. Parce
1019         contracted short options. Make unrecognized options an error.
1020         If same-line output is active, trap on EXIT to increment the
1021         progress (only with --percentage), erase the line and print the
1022         current status.
1023         * testsuite/experimental/simd/generate_makefile.sh: Initialize
1024         helper files for progress account keeping. Update help target
1025         for changes to DRIVEROPTS.
1026
1027 2021-06-23  Matthias Kretz  <m.kretz@gsi.de>
1028
1029         * testsuite/Makefile.am (check-simd): Remove -fno-tree-vrp flag
1030         and associated warning.
1031         * testsuite/Makefile.in: Regenerate.
1032
1033 2021-06-23  Cassio Neri  <cassio.neri@gmail.com>
1034             Jonathan Wakely  <jwakely@redhat.com>
1035             Ulrich Drepper  <drepper@redhat.com>
1036
1037         * include/std/chrono (chrono::year::is_leap()): Optimize.
1038
1039 2021-06-23  Patrick Palka  <ppalka@redhat.com>
1040
1041         PR c++/86439
1042         * testsuite/23_containers/map/cons/deduction.cc: Replace ambiguous
1043         CTAD examples.
1044         * testsuite/23_containers/multimap/cons/deduction.cc: Likewise.
1045         * testsuite/23_containers/multiset/cons/deduction.cc: Likewise.
1046         Mention one of the replaced examples is broken due to PR101174.
1047         * testsuite/23_containers/set/cons/deduction.cc: Likewise.
1048         * testsuite/23_containers/unordered_map/cons/deduction.cc: Replace
1049         ambiguous CTAD examples.
1050         * testsuite/23_containers/unordered_multimap/cons/deduction.cc:
1051         Likewise.
1052         * testsuite/23_containers/unordered_multiset/cons/deduction.cc:
1053         Likewise.
1054         * testsuite/23_containers/unordered_set/cons/deduction.cc: Likewise.
1055
1056 2021-06-23  Jonathan Wakely  <jwakely@redhat.com>
1057
1058         * include/std/mutex (__detail::__try_lock_impl): Rename
1059         parameter to avoid clashing with newlib's __lockable macro.
1060         (try_lock): Add 'inline' specifier.
1061         * testsuite/17_intro/names.cc: Add check for __lockable.
1062         * testsuite/30_threads/try_lock/5.cc: Add options for pthreads.
1063
1064 2021-06-22  Jonathan Wakely  <jwakely@redhat.com>
1065             Matthias Kretz  <m.kretz@gsi.de>
1066
1067         * include/std/mutex (lock): Replace recursion with iteration
1068         when lockables all have the same type.
1069         (__detail::__try_lock_impl): Likewise. Pass lockables as
1070         parameters, instead of a tuple. Always lock the first one, and
1071         recurse for the rest.
1072         (__detail::__lock_impl): Adjust call to __try_lock_impl.
1073         (__detail::__try_to_lock): Remove.
1074         * testsuite/30_threads/lock/3.cc: Check that mutexes are locked.
1075         * testsuite/30_threads/lock/4.cc: Also test non-heterogeneous
1076         arguments.
1077         * testsuite/30_threads/unique_lock/cons/60497.cc: Also check
1078         std::try_lock.
1079         * testsuite/30_threads/try_lock/5.cc: New test.
1080
1081 2021-06-22  Jonathan Wakely  <jwakely@redhat.com>
1082
1083         * include/std/memory (declare_reachable, undeclare_reachable)
1084         (declare_no_pointers, undeclare_no_pointers, get_pointer_safety)
1085         (pointer_safety): Only define for C++11 to C++20 inclusive.
1086         * testsuite/20_util/pointer_safety/1.cc: Do not run for C++23.
1087
1088 2021-06-22  Jonathan Wakely  <jwakely@redhat.com>
1089
1090         * include/bits/random.h (seed_seq): Constrain initializer-list
1091         constructor.
1092         * include/bits/random.tcc (seed_seq): Add template parameter.
1093         * testsuite/26_numerics/random/seed_seq/cons/default.cc: Check
1094         for noexcept.
1095         * testsuite/26_numerics/random/seed_seq/cons/initlist.cc: Check
1096         constraints.
1097
1098 2021-06-22  Thomas Rodgers  <rodgert@appliantology.com>
1099
1100         PR libstdc++/100806
1101         * include/bits/semaphore_base.h (__atomic_semaphore::_M_release):
1102         Force _M_release() to wake all waiting threads.
1103         * testsuite/30_threads/semaphore/100806.cc: New test.
1104
1105 2021-06-21  Jonathan Wakely  <jwakely@redhat.com>
1106
1107         * include/std/mutex (__try_to_lock): Move to __detail namespace.
1108         (struct __try_lock_impl): Replace with ...
1109         (__detail::__try_lock_impl<Idx>(tuple<Lockables...>&)): New
1110         function templates to implement std::try_lock.
1111         (try_lock): Use new __try_lock_impl.
1112         (__detail::__lock_impl(int, int&, L0&, L1&...)): New function
1113         template to implement std::lock.
1114         (lock): Use __lock_impl.
1115
1116 2021-06-21  Patrick Palka  <ppalka@redhat.com>
1117
1118         * include/bits/ranges_cmp.h (__cpp_lib_ranges): Adjust value.
1119
1120 2021-06-20  Patrick Palka  <ppalka@redhat.com>
1121
1122         * include/std/ranges (__non_propagating_cache::operator bool):
1123         Define for split_view::begin().
1124         (split_view): Define as per P2210.
1125         (views::__detail::__can_split_view): Define.
1126         (views::_Split, views::split): Define.
1127         * testsuite/std/ranges/adaptors/100577.cc (test01, test02):
1128         Test views::split.
1129         * testsuite/std/ranges/adaptors/split.cc: New test.
1130         * testsuite/std/ranges/p2325.cc (test08a): New test.
1131         * testsuite/std/ranges/p2367.cc (test01): Test views::split.
1132
1133 2021-06-20  Patrick Palka  <ppalka@redhat.com>
1134
1135         * include/std/ranges: Rename views::split to views::lazy_split,
1136         split_view to lazy_split_view, etc. throughout.
1137         * testsuite/std/ranges/*: Likewise.
1138         * testsuite/std/ranges/adaptors/lazy_split.cc: New file.
1139         * testsuite/std/ranges/adaptors/lazy_split_neg.cc: New file.
1140
1141 2021-06-20  Patrick Palka  <ppalka@redhat.com>
1142
1143         * include/std/ranges (split_view::_OuterIter::__at_end):
1144         Check _M_trailing_empty.
1145         (split_view::_OuterIter::_M_trailing_empty): Define this
1146         data member.
1147         (split_view::_OuterIter::operator++): Set _M_trailing_empty
1148         appropriately.
1149         (split_view::_OuterIter::operator==): Compare
1150         _M_trailing_empty.
1151         * testsuite/std/ranges/adaptors/100479.cc (test03): Expect two
1152         split parts instead of one.
1153         * testsuite/std/ranges/adaptors/split.cc (test11): New test.
1154
1155 2021-06-20  Patrick Palka  <ppalka@redhat.com>
1156
1157         * include/std/ranges (split_view::_InnerIter::base): Define as
1158         per P2210.
1159
1160 2021-06-19  Patrick Palka  <ppalka@redhat.com>
1161
1162         * include/std/ranges (transform_view::_Iterator::_S_iter_concept):
1163         Consider _Base instead of _Vp as per LWG 3555.
1164         (elements_view::_Iterator::_S_iter_concept): Likewise.
1165
1166 2021-06-19  Patrick Palka  <ppalka@redhat.com>
1167
1168         * include/std/ranges (split_view::_OuterIter::value_type::begin):
1169         Remove the non-const overload, and remove the copyable constraint
1170         on the const overload as per LWG 3553.
1171
1172 2021-06-19  Patrick Palka  <ppalka@redhat.com>
1173
1174         * include/bits/stl_iterator.h
1175         (__detail::__common_iter_use_postfix_proxy): Add
1176         move_constructible constraint as per LWG 3546.
1177         (common_iterator::__postfix_proxy): Adjust initializer of
1178         _M_keep as per LWG 3546.
1179
1180 2021-06-18  Patrick Palka  <ppalka@redhat.com>
1181
1182         PR libstdc++/100387
1183         * include/bits/ranges_algo.h (__minmax_fn::operator()): Rewrite
1184         to limit comparison complexity to 3*N/2.
1185         (__minmax_element_fn::operator()): Likewise.
1186         (shift_right): Avoid premature std::move of __result.
1187         * testsuite/25_algorithms/minmax/constrained.cc (test04, test05):
1188         New tests.
1189         * testsuite/25_algorithms/minmax_element/constrained.cc (test02):
1190         Likewise.
1191
1192 2021-06-18  Patrick Palka  <ppalka@redhat.com>
1193
1194         * include/std/concepts (convertible_to): Just use declval as per
1195         LWG 3557.
1196
1197 2021-06-18  Jonathan Wakely  <jwakely@redhat.com>
1198
1199         PR libstdc++/95833
1200         * include/std/numeric (reduce(Iter, Iter, T, BinaryOp)): Replace
1201         incorrect static_assert with ones matching the 'Mandates'
1202         conditions in the standard.
1203         * testsuite/26_numerics/reduce/95833.cc: New test.
1204
1205 2021-06-18  Jonathan Wakely  <jwakely@redhat.com>
1206
1207         * testsuite/21_strings/basic_string/cons/char/1.cc: Use
1208         diagnostic pragma to suppress -Wstringop-overread error.
1209
1210 2021-06-18  Patrick Palka  <ppalka@redhat.com>
1211
1212         * include/bits/ranges_algo.h (__find_fn, find, __find_if_fn)
1213         (find_if, __find_if_not_fn, find_if_not, _in_in_result)
1214         (__mismatch_fn, mismatch, __search_fn, search): Move to ...
1215         * include/bits/ranges_util.h: ... here.
1216         * include/std/ranges (__detail::find, __detail::find_if)
1217         (__detail::find_if_not, __detail::mismatch): Remove.
1218         (filter_view): Use ranges::find_if instead.
1219         (drop_while_view): Use ranges::find_if_not instead.
1220         (split_view): Use ranges::find and ranges::mismatch instead.
1221
1222 2021-06-18  Patrick Palka  <ppalka@redhat.com>
1223
1224         * include/bits/iterator_concepts.h (weakly_incrementable): Remove
1225         default_initializable requirement.
1226         * include/bits/ranges_base.h (ranges::view): Likewise.
1227         * include/bits/ranges_util.h (subrange): Constrain the default
1228         ctor.
1229         * include/bits/stl_iterator.h (back_insert_iterator): Remove the
1230         default ctor.
1231         (front_insert_iterator): Likewise.
1232         (insert_iterator): Likewise.  Remove NSDMIs.
1233         (common_iterator): Constrain the default ctor.
1234         (counted_iterator): Likewise.
1235         * include/bits/stream_iterator.h (ostream_iterator): Remove the
1236         default ctor.
1237         * include/std/ranges (__detail::__box::operator=): Handle
1238         self-assignment in the primary template.
1239         (__detail::__box): In the partial specialization: adjust
1240         constraints as per P2325.  Add specialized operator= for the
1241         case when the wrapped type is not copyable.  Constrain the
1242         default ctor.  Avoid list-initialization.
1243         (single_view): Constraint the default ctor.
1244         (iota_view): Relax semiregular constraint to copyable.
1245         Constrain the default ctor.
1246         (iota_view::_Iterator): Constraint the default ctor.
1247         (basic_istream_view): Remove the default ctor.  Remove NSDMIs.
1248         Remove redundant checks for empty _M_stream.
1249         (basic_istream_view::_Iterator): Likewise.
1250         (ref_view): Remove the default ctor.  Remove NSDMIs.
1251         (ref_view::_Iterator): Constrain the default ctor.
1252         (__detail::__non_propagating_cache::operator=): Define overload
1253         for assigning from a value of the underlying type.
1254         (filter_view): Likewise.
1255         (filter_view::_Iterator): Likewise.
1256         (transform_view): Likewise.
1257         (transform_view::_Iterator): Likewise.
1258         (take_view): Likewise.
1259         (take_view::_Iterator): Likewise.
1260         (take_while_view): Likewise.
1261         (take_while_view::_Iterator): Likewise.
1262         (drop_while_view): Likewise.
1263         (drop_while_view::_Iterator): Likewise.
1264         (join_view): Likewise.
1265         (split_view::_OuterIter::__current): Adjust after changing the
1266         type of _M_current.
1267         (split_view::_M_current): Wrap it in a __non_propagating_cache.
1268         (split_view::split_view): Constrain the default ctor.
1269         (common_view): Constrain the default ctor.
1270         (reverse_view): Likewise.
1271         (elements_view): Likewise.
1272         * include/std/span (enable_view<span<_ElementType, _Extent>>):
1273         Define this partial specialization to true unconditionally.
1274         * include/std/version (__cpp_lib_ranges): Adjust value.
1275         * testsuite/24_iterators/back_insert_iterator/constexpr.cc:
1276         Don't attempt to default construct a back_insert_iterator.
1277         * testsuite/24_iterators/front_insert_iterator/constexpr.cc:
1278         Don't attempt to default construct a front_insert_iterator.
1279         * testsuite/24_iterators/insert_iterator/constexpr.cc:
1280         Don't attempt to default construct an insert_iterator.
1281         * testsuite/24_iterators/ostream_iterator/requirements/constexpr.cc:
1282         Remove this test for default constructibility of ostream_iterator.
1283         * testsuite/std/ranges/97600.cc: Don't attempt to default
1284         construct a basic_istream_view.
1285         * testsuite/std/ranges/adaptors/detail/semiregular_box.cc:
1286         Rename to ...
1287         * testsuite/std/ranges/adaptors/detail/copyable_box.cc: ... this.
1288         (test02): Adjust now that __box is copyable-box not
1289         semiregular-box.
1290         (test03): New test.
1291         * testsuite/std/ranges/p2325.cc: New test.
1292         * testsuite/std/ranges/single_view.cc (test06): New test.
1293         * testsuite/std/ranges/view.cc: Adjust now that view doesn't
1294         require default_initializable.
1295
1296 2021-06-17  Jonathan Wakely  <jwakely@redhat.com>
1297
1298         PR libstdc++/91488
1299         * include/bits/basic_string.h (__cpp_lib_constexpr_string): Only
1300         define when is_constant_evaluated is available.
1301         * include/bits/char_traits.h (__cpp_lib_constexpr_char_traits):
1302         Likewise.
1303         (__constant_string_p, __constant_array_p): Remove.
1304         (char_traits): Use is_constant_evaluated directly.
1305         * include/std/version (__cpp_lib_constexpr_char_traits)
1306         (__cpp_lib_constexpr_string): Only define when
1307         is_constant_evaluated is available.
1308
1309 2021-06-17  Patrick Palka  <ppalka@redhat.com>
1310
1311         PR libstdc++/100940
1312         * include/std/ranges (__adaptor::_Partial): For the "simple"
1313         forwarding partial specializations, also require that
1314         the extra arguments are trivially copyable.
1315         * testsuite/std/ranges/adaptors/100577.cc (test04): New test.
1316
1317 2021-06-17  Patrick Palka  <ppalka@redhat.com>
1318
1319         PR libstdc++/100940
1320         * include/std/ranges (__adaptor::_RangeAdaptor): Document the
1321         template form of _S_has_simple_extra_args.
1322         (__adaptor::__adaptor_has_simple_extra_args): Add _Args template
1323         parameter pack.  Try to treat _S_has_simple_extra_args as a
1324         variable template parameterized by _Args.
1325         (__adaptor::_Partial): Pass _Arg/_Args to the constraint
1326         __adaptor_has_simple_extra_args.
1327         (views::_Take::_S_has_simple_extra_args): Templatize according
1328         to the type of the extra argument.
1329         (views::_Drop::_S_has_simple_extra_args): Likewise.
1330         (views::_Split::_S_has_simple_extra_args): Define.
1331         * testsuite/std/ranges/adaptors/100577.cc (test01, test02):
1332         Adjust after changes to _S_has_simple_extra_args mechanism.
1333         (test03): Define.
1334
1335 2021-06-16  Jonathan Wakely  <jwakely@redhat.com>
1336
1337         * include/bits/iterator_concepts.h (__decay_copy): Name type.
1338
1339 2021-06-16  Jonathan Wakely  <jwakely@redhat.com>
1340
1341         * include/bits/ranges_base.h (ranges::begin, ranges::end)
1342         (ranges::cbegin, ranges::cend, ranges::rbeing, ranges::rend)
1343         (ranges::crbegin, ranges::crend, ranges::size, ranges::ssize)
1344         (ranges::empty, ranges::data, ranges::cdata): Remove final
1345         keywords and deleted operator& overloads.
1346         * testsuite/24_iterators/customization_points/iter_move.cc: Use
1347         new is_customization_point_object function.
1348         * testsuite/24_iterators/customization_points/iter_swap.cc:
1349         Likewise.
1350         * testsuite/std/concepts/concepts.lang/concept.swappable/swap.cc:
1351         Likewise.
1352         * testsuite/std/ranges/access/begin.cc: Likewise.
1353         * testsuite/std/ranges/access/cbegin.cc: Likewise.
1354         * testsuite/std/ranges/access/cdata.cc: Likewise.
1355         * testsuite/std/ranges/access/cend.cc: Likewise.
1356         * testsuite/std/ranges/access/crbegin.cc: Likewise.
1357         * testsuite/std/ranges/access/crend.cc: Likewise.
1358         * testsuite/std/ranges/access/data.cc: Likewise.
1359         * testsuite/std/ranges/access/empty.cc: Likewise.
1360         * testsuite/std/ranges/access/end.cc: Likewise.
1361         * testsuite/std/ranges/access/rbegin.cc: Likewise.
1362         * testsuite/std/ranges/access/rend.cc: Likewise.
1363         * testsuite/std/ranges/access/size.cc: Likewise.
1364         * testsuite/std/ranges/access/ssize.cc: Likewise.
1365         * testsuite/util/testsuite_iterators.h
1366         (is_customization_point_object): New function.
1367
1368 2021-06-15  Jonathan Wakely  <jwakely@redhat.com>
1369
1370         * include/bits/ranges_base.h (ranges::begin, ranges::end)
1371         (ranges::cbegin, ranges::cend, ranges::rbeing, ranges::rend)
1372         (ranges::crbegin, ranges::crend, ranges::size, ranges::ssize)
1373         (ranges::empty, ranges::data, ranges::cdata): Make types final.
1374         Add deleted operator& overloads.
1375         (ranges::advance, ranges::distance, ranges::next, ranges::prev):
1376         Likewise.
1377         * testsuite/std/ranges/headers/ranges/synopsis.cc: Replace
1378         ill-formed & expressions with using-declarations. Add checks for
1379         other function objects.
1380
1381 2021-06-15  Jonathan Wakely  <jwakely@redhat.com>
1382
1383         * include/bits/ranges_util.h (view_interface): Add noexcept to
1384         empty, operator bool, data and size members.
1385         (subrange): Add noexcept to constructors.
1386         * include/std/ranges (single_view, ref_view): Add noexcept to
1387         constructors.
1388         (views::single, views::all): Add noexcept.
1389         * testsuite/std/ranges/adaptors/all.cc: Check noexcept.
1390         * testsuite/std/ranges/single_view.cc: Likewise.
1391
1392 2021-06-15  Jonathan Wakely  <jwakely@redhat.com>
1393
1394         * include/bits/ranges_util.h (subrange): Add __size_type typedef
1395         and use it to simplify declarations.
1396         (subrange(i, s, n)): Remove assertion.
1397         * testsuite/std/ranges/subrange/constexpr.cc: New test.
1398
1399 2021-06-15  Jonathan Wakely  <jwakely@redhat.com>
1400
1401         * include/bits/iterator_concepts.h (__cust_access::__decay_copy):
1402         Replace with function object.
1403         (__cust_access::__member_begin, ___cust_access::_adl_begin): Use
1404         __decay_copy unqualified.
1405         * include/bits/ranges_base.h (__member_end, __adl_end):
1406         Likewise. Use __range_iter_t for type of ranges::begin.
1407         (__member_rend): Use correct value category for rbegin argument.
1408         (__member_data): Use __decay_copy unqualified.
1409         (__begin_data): Use __range_iter_t for type of ranges::begin.
1410
1411 2021-06-14  Jonathan Wakely  <jwakely@redhat.com>
1412
1413         * include/bits/ranges_base.h (ranges::empty): Check whether
1414         conversion to bool can throw.
1415         * testsuite/std/ranges/access/empty.cc: Check for correct
1416         noexcept-specifier.
1417
1418 2021-06-14  Jonathan Wakely  <jwakely@redhat.com>
1419
1420         PR libstdc++/100894
1421         * include/std/type_traits (__common_ref_impl<X&, Y&>): Only
1422         use the type if it's a reference.
1423         * testsuite/20_util/common_reference/100894.cc: New test.
1424
1425 2021-06-14  Jonathan Wakely  <jwakely@redhat.com>
1426
1427         * testsuite/experimental/filesystem/path/native/conv_c++23.cc:
1428         Add dg-require-filesystem-ts directive.
1429
1430 2021-06-14  Jonathan Wakely  <jwakely@redhat.com>
1431
1432         PR libstdc++/101034
1433         * include/std/any (any(in_place_t<T>, initializer_list<U>, A&&...))
1434         (any::emplace<T>(initializer_list<U>, A&&...)): Fix constraint
1435         to use lvalue.
1436         * testsuite/20_util/any/cons/101034.cc: New test.
1437
1438 2021-06-14  Jonathan Wakely  <jwakely@redhat.com>
1439
1440         * testsuite/17_intro/headers/c++2017/all_attributes.cc: Add
1441         -std=gnu++17 option.
1442
1443 2021-06-14  Jonathan Wakely  <jwakely@redhat.com>
1444
1445         PR libstdc++/101056
1446         * libsupc++/compare (compare_partial_order_fallback): Add
1447         constraint using reversed parameter order, as per LWG 3465.
1448         * testsuite/18_support/comparisons/algorithms/fallback.cc:
1449         Adjust expected result.
1450
1451 2021-06-14  Jonathan Wakely  <jwakely@redhat.com>
1452
1453         * libsupc++/compare (__decayed_same_as): New helper concept.
1454         (strong_order, weak_order, partial_order): Constrain with new
1455         concept instead of using static_assert.
1456         (compare_strong_order_fallback, compare_weak_order_fallback)
1457         (compare_partial_order_fallback): Likewise. Do not deduce return
1458         types. Remove redundant if-constexpr checks.
1459         * testsuite/18_support/comparisons/algorithms/fallback.cc: New test.
1460
1461 2021-06-14  Jonathan Wakely  <jwakely@redhat.com>
1462
1463         PR libstdc++/101055
1464         * include/std/tuple: Use reserved form of attribute name.
1465         * testsuite/17_intro/headers/c++2011/all_attributes.cc: Add
1466         check for no_unique_address.
1467         * testsuite/17_intro/headers/c++2014/all_attributes.cc:
1468         Likewise.
1469         * testsuite/17_intro/headers/c++2017/all_attributes.cc:
1470         Likewise.
1471
1472 2021-06-11  Jonathan Wakely  <jwakely@redhat.com>
1473
1474         * include/bits/fs_path.h (operator==, operator<=>): Use new
1475         _S_compare function.
1476         (path::_S_compare): New function to call path::compare in a
1477         context where path::iterator is complete.
1478         * include/experimental/bits/fs_path.h (operator<, operator==):
1479         Define after path::iterator is complete.
1480         * testsuite/27_io/filesystem/path/native/conv_c++23.cc: New
1481         test.
1482         * testsuite/experimental/filesystem/path/native/conv_c++23.cc:
1483         New test.
1484
1485 2021-06-09  Thomas Rodgers  <rodgert@appliantology.com>
1486
1487         * testsuite/29_atomics/atomic_ref/wait_notify.cc: Guard
1488         test logic with constexpr check for is_always_lock_free.
1489
1490 2021-06-09  Jonathan Wakely  <jwakely@redhat.com>
1491
1492         PR libstdc++/100982
1493         * include/std/optional (optional::operator=(const optional<U>&)):
1494         Fix value category used in is_assignable check.
1495         * testsuite/20_util/optional/assignment/100982.cc: New test.
1496
1497 2021-06-09  Jonathan Wakely  <jwakely@redhat.com>
1498
1499         * include/bits/allocator.h (allocator::is_always_equal): Deprecate.
1500         * include/bits/iterator_concepts.h (indirectly_readable_traits):
1501         Add LWG issue number to comment.
1502         * include/std/memory_resource (polymorphic_allocator::release):
1503         Deprecate.
1504         * testsuite/20_util/allocator/requirements/typedefs.cc: Add
1505         dg-warning for deprecation. Also check std::allocator<void>.
1506
1507 2021-06-08  Thomas Rodgers  <rodgert@appliantology.com>
1508
1509         PR libstdc++/100889
1510         * include/bits/atomic_base.h (atomic_ref<_Tp*>::wait):
1511         Change parameter type from _Tp to _Tp*.
1512         * testsuite/29_atomics/atomic_ref/wait_notify.cc: Extend
1513         coverage of types tested.
1514
1515 2021-06-08  Thomas Rodgers  <rodgert@appliantology.com>
1516
1517         * include/std/barrier (__tree_barrier::_M_arrive): Remove
1518         unnecessary hasher instantiation.
1519
1520 2021-06-08  Jonathan Wakely  <jwakely@redhat.com>
1521
1522         * include/experimental/propagate_const (swap): Constrain.
1523         * testsuite/experimental/propagate_const/swap/lwg3413.cc: New test.
1524
1525 2021-06-07  Avi Kivity  <avi@scylladb.com>
1526
1527         PR libstdc++/100900
1528         * include/std/ranges (elements_view::__iter_cat::_S_iter_cat):
1529         Add missing typename.
1530
1531 2021-06-07  Jonathan Wakely  <jwakely@redhat.com>
1532
1533         PR libstdc++/98842
1534         * include/std/optional (operator<=>(const optional<T>& const U&)):
1535         Add missing constraint and add workaround for template
1536         recursion.
1537         * testsuite/20_util/optional/relops/three_way.cc: Check that
1538         type without equality comparison cannot be compared when wrapped
1539         in std::optional.
1540
1541 2021-06-05  Jonathan Wakely  <jwakely@redhat.com>
1542
1543         PR libstdc++/100824
1544         * include/bits/ranges_base.h (_SSize): Return signed type.
1545         * testsuite/std/ranges/access/ssize.cc: Check with __int128.
1546
1547 2021-06-04  Jonathan Wakely  <jwakely@redhat.com>
1548
1549         * include/bits/ranges_base.h (_SSize): Return the result of
1550         ranges::size converted to the wider of make-signed-like-t<S> and
1551         ptrdiff_t, rather than the ranges different type.
1552         * testsuite/std/ranges/access/ssize.cc: Adjust expected result
1553         for an iota_view that uses an integer class type for its
1554         difference_type.
1555
1556 2021-06-04  Jonathan Wakely  <jwakely@redhat.com>
1557
1558         PR libstdc++/100824
1559         * include/bits/ranges_base.h (__member_data): Use __decay_copy.
1560         * testsuite/std/ranges/access/data.cc: Add testcase from PR.
1561
1562 2021-06-04  Jonathan Wakely  <jwakely@redhat.com>
1563
1564         PR libstdc++/100824
1565         * include/bits/iterator_concepts.h (__detail::__decay_copy)
1566         (__detail::__member_begin, __detail::__adl_begin): Move to
1567         namespace ranges::__cust_access.
1568         (__detail::__ranges_begin): Likewise, and rename to __begin.
1569         Remove redundant static assertion.
1570         * include/bits/ranges_base.h (_Begin, _End, _RBegin, _REnd):
1571         Use lvalue in noexcept specifier.
1572         (__as_const): Add non-deduced parameter for value category.
1573         (_CBegin, _CEnd, _CRBegin, _CREnd, _CData): Adjust uses of
1574         __as_const.
1575         (__member_size, __adl_size, __member_empty, __size0_empty):
1576         (__eq_iter_empty, __adl_data): Use lvalue objects in
1577         requirements.
1578         (__sentinel_size): Likewise. Add check for conversion to
1579         unsigned-like.
1580         (__member_data): Allow non-lvalue types to satisfy the concept,
1581         but use lvalue object in requirements.
1582         (_Size, _SSize): Remove forwarding to always use an lvalue.
1583         (_Data): Likewise. Add static assertion for arrays.
1584         * testsuite/std/ranges/access/cdata.cc: Adjust expected
1585         behaviour for rvalues. Add negative tests for ill-formed
1586         expressions.
1587         * testsuite/std/ranges/access/data.cc: Likewise.
1588         * testsuite/std/ranges/access/empty.cc: Adjust expected
1589         behaviour for rvalues.
1590         * testsuite/std/ranges/access/size.cc: Likewise.
1591
1592 2021-06-04  Tim Adye  <Tim.Adye@cern.ch>
1593
1594         * include/std/any (any::_Manager::_S_access): New static
1595         function to access the contained value.
1596         (any::emplace, __any_caster): Use _S_access member of the
1597         manager type.
1598
1599 2021-06-04  Jonathan Wakely  <jwakely@redhat.com>
1600
1601         * doc/xml/manual/status_cxx2020.xml:
1602         * doc/html/*: Regenerate.
1603         * include/bits/hashtable.h (__cpp_lib_generic_unordered_lookup):
1604         Define.
1605         * include/std/version (__cpp_lib_generic_unordered_lookup):
1606         Define.
1607         * testsuite/23_containers/unordered_map/operations/1.cc: Check
1608         feature test macro.
1609         * testsuite/23_containers/unordered_set/operations/1.cc:
1610         Likewise.
1611
1612 2021-06-03  Patrick Palka  <ppalka@redhat.com>
1613
1614         * include/bits/ranges_algo.h (__detail::__can_reread_output):
1615         Factor out this concept from ...
1616         (__unique_copy_fn::operator()): ... here.  Use the concept
1617         throughout.
1618         * testsuite/std/ranges/range.cc: Remove now ill-formed use
1619         of range_value_t on an output_range.
1620         * testsuite/util/testsuite_iterators.h (output_iterator_wrapper):
1621         Define value_type, pointer and reference member types to void.
1622
1623 2021-06-03  Patrick Palka  <ppalka@redhat.com>
1624
1625         PR libstdc++/100577
1626         * include/std/ranges (_RangeAdaptorClosure): Document
1627         _S_has_simple_call_op mechanism.
1628         (_RangeAdaptor): Document _S_has_simple_extra_args mechanism.
1629         (__closure_has_simple_call_op): New concept.
1630         (__adaptor_has_simple_extra_args): Likewise.
1631         (_Partial<_Adaptor, _Args...>): New partial specialization.
1632         (_Partial<_Adaptor, _Arg>): Likewise.
1633         (_Pipe<_Lhs, _Rhs>): Likewise.
1634         (views::_All::_S_has_simple_call_op): Define to true.
1635         (views::_Filter::_S_has_simple_extra_args): Likewise.
1636         (views::_Transform::_S_has_simple_extra_args): Likewise.
1637         (views::_Take::_S_has_simple_extra_args): Likewise.
1638         (views::_TakeWhile::_S_has_simple_extra_args): Likewise.
1639         (views::_Drop::_S_has_simple_extra_args): Likewise.
1640         (views::_DropWhile::_S_has_simple_extra_args): Likewise.
1641         (views::_Join::_S_has_simple_call_op): Likewise.
1642         (views::_Split): Document why we don't define
1643         _S_has_simple_extra_args to true for this adaptor.
1644         (views::_Common::_S_has_simple_call_op): Define to true.
1645         (views::_Reverse::_S_has_simple_call_op): Likewise.
1646         (views::_Elements::_S_has_simple_call_op): Likewise.
1647         * testsuite/std/ranges/adaptors/100577.cc: New test.
1648
1649 2021-06-02  Jonathan Wakely  <jwakely@redhat.com>
1650
1651         PR libstdc++/100863
1652         PR libstdc++/65816
1653         * include/bits/hashtable_policy.h (_Hashtable_ebo_helper):
1654         Value-initialize subobject.
1655         * testsuite/23_containers/unordered_map/allocator/default_init.cc:
1656         Remove XFAIL.
1657         * testsuite/23_containers/unordered_set/allocator/default_init.cc:
1658         Remove XFAIL.
1659
1660 2021-06-02  Jonathan Wakely  <jwakely@redhat.com>
1661
1662         PR libstdc++/96088
1663         * testsuite/23_containers/unordered_map/96088.cc: Adjust
1664         expected number of allocations.
1665         * testsuite/23_containers/unordered_set/96088.cc: Likewise.
1666
1667 2021-06-02  Jonathan Wakely  <jwakely@redhat.com>
1668
1669         * doc/xml/manual/status_cxxis29124.xml: Improve punctuation.
1670         * doc/xml/manual/status_cxxtr1.xml: Likewise.
1671         * doc/xml/manual/status_cxxtr24733.xml: Likewise.
1672         * doc/html/*: Regenerate.
1673
1674 2021-06-01  Patrick Palka  <ppalka@redhat.com>
1675
1676         PR c++/65816
1677         * testsuite/23_containers/deque/allocator/default_init.cc,
1678         testsuite/23_containers/forward_list/allocator/default_init.cc,
1679         testsuite/23_containers/list/allocator/default_init.cc,
1680         testsuite/23_containers/map/allocator/default_init.cc,
1681         testsuite/23_containers/set/allocator/default_init.cc,
1682         testsuite/23_containers/vector/allocator/default_init.cc,
1683         testsuite/23_containers/vector/bool/allocator/default_init.cc:
1684         Remove xfail.
1685
1686 2021-06-01  Jonathan Wakely  <jwakely@redhat.com>
1687
1688         * testsuite/23_containers/unordered_map/96088.cc: Change
1689         effective target to c++17.
1690         * testsuite/23_containers/unordered_set/96088.cc: Likewise.
1691
1692 2021-06-01  Jonathan Wakely  <jwakely@redhat.com>
1693
1694         * testsuite/22_locale/ctype/is/string/89728_neg.cc: Only test
1695         isblank for C++11 and later.
1696
1697 2021-06-01  Jonathan Wakely  <jwakely@redhat.com>
1698
1699         PR libstdc++/100833
1700         * include/bits/ranges_base.h (ranges::advance(iter, n, sentinel)):
1701         Fix return value for no-op case.
1702         * testsuite/24_iterators/range_operations/advance.cc: Test
1703         return values of three-argument overload.
1704
1705 2021-06-01  Jonathan Wakely  <jwakely@redhat.com>
1706
1707         PR libstdc++/99453
1708         * python/Makefile.am: Use archive name for printer hook if no
1709         dynamic library name is available.
1710         * python/Makefile.in: Regenerate.
1711
1712 2021-05-30  Gerald Pfeifer  <gerald@pfeifer.com>
1713
1714         * doc/xml/manual/abi.xml: Remove dead reference to "Intel
1715         Compilers for Linux: Compatibility with GNU Compilers" article.
1716         * doc/html/manual/abi.html: Regenerate.
1717
1718 2021-05-26  François Dumont  <fdumont@gcc.gnu.org>
1719
1720         * include/debug/formatter.h
1721         (_Error_formatter::_Parameter::_Named): New.
1722         (_Error_formatter::_Parameter::_Type): Inherit latter.
1723         (_Error_formatter::_Parameter::_M_integer): Likewise.
1724         (_Error_formatter::_Parameter::_M_string): Likewise.
1725         * src/c++11/debug.cc: Include <cstring>.
1726         (_Print_func_t): New.
1727         (print_raw(PrintContext&, const char*, ptrdiff_t)): New.
1728         (print_word): Use '%.*s' format in fprintf to render only expected number of chars.
1729         (pretty_print(PrintContext&, const char*, _Print_func_t)): New.
1730         (print_type): Rename in...
1731         (print_type_info): ...this. Use pretty_print.
1732         (print_address, print_integer): New.
1733         (print_named_name, print_iterator_constness, print_iterator_state): New.
1734         (print_iterator_seq_type): New.
1735         (print_named_field, print_type_field, print_instance_field, print_iterator_field): New.
1736         (print_field): Use latters.
1737         (print_quoted_named_name, print_type_type, print_type, print_instance): New.
1738         (print_string(PrintContext&, const char*, const _Parameter*, size_t)):
1739         Change signature to...
1740         (print_string(PrintContext&, const char*, ptrdiff_t, const _Parameter*, size_t)):
1741         ...this and adapt. Remove intermediate buffer to render input string.
1742         (print_string(PrintContext&, const char*, ptrdiff_t)): New.
1743
1744 2021-05-26  Jonathan Wakely  <jwakely@redhat.com>
1745
1746         PR libstdc++/100768
1747         * include/bits/ranges_base.h (advance, distance, next, prev):
1748         Replace function templates with function objects.
1749         * testsuite/24_iterators/headers/iterator/synopsis_c++20.cc:
1750         Adjust for changes to function objects.
1751         * testsuite/std/ranges/adaptors/elements.cc: Add using
1752         declarations for names from namespace ranges.
1753         * testsuite/std/ranges/adaptors/transform.cc: Likewise.
1754         * testsuite/24_iterators/range_operations/100768.cc: New test.
1755
1756 2021-05-24  François Dumont  <fdumont@gcc.gnu.org>
1757
1758         PR libstdc++/96088
1759         * include/bits/hashtable_policy.h (_Select2nd): New.
1760         (_NodeBuilder<>): New.
1761         (_ReuseOrAllocNode<>::operator()): Use variadic template args.
1762         (_AllocNode<>::operator()): Likewise.
1763         * include/bits/hashtable.h
1764         (_Hashtable<>::__node_builder_t): New.
1765         (_Hashtable<>::_M_insert_unique<>(_Kt&&, _Arg&&, const _NodeGenerator&)):
1766          New.
1767         (_Hashtable<>::_S_forward_key): New.
1768         (_Hashtable<>::_M_insert): Use latter.
1769         (_Hashtable<>::_M_insert(const_iterator, _Arg&&, const _NodeGenerator&, false_type)):
1770         Instantiate node first, compute hash code second.
1771         * testsuite/23_containers/unordered_map/96088.cc: New test.
1772         * testsuite/23_containers/unordered_multimap/96088.cc: New test.
1773         * testsuite/23_containers/unordered_multiset/96088.cc: New test.
1774         * testsuite/23_containers/unordered_set/96088.cc: New test.
1775         * testsuite/util/replacement_memory_operators.h
1776         (counter::_M_increment): New.
1777         (counter::_M_decrement): New.
1778         (counter::reset()): New.
1779
1780 2021-05-24  Patrick Palka  <ppalka@redhat.com>
1781
1782         PR libstdc++/100479
1783         * include/std/ranges (__detail::__non_propagating_cache): Move
1784         definition up to before that of _CachedPosition.  Make base
1785         class _Optional_base protected instead of private.  Add const
1786         overload for operator*.
1787         (__detail::_CachedPosition): Rewrite the partial specialization
1788         for forward ranges as a derived class of __non_propagating_cache.
1789         Remove the size constraint on the partial specialization for
1790         random access ranges.  Add copy/move/copy-assignment/move-assignment
1791         members to the offset partial specialization for random
1792         access ranges that propagate the cached value but additionally
1793         invalidate it in the source object on move.
1794         * testsuite/std/ranges/adaptors/100479.cc: New test.
1795
1796 2021-05-24  Jonathan Wakely  <jwakely@redhat.com>
1797
1798         * testsuite/25_algorithms/inplace_merge/constrained.cc: Qualify
1799         call to ranges::next.
1800         * testsuite/25_algorithms/is_sorted/constrained.cc: Likewise.
1801         * testsuite/25_algorithms/is_sorted_until/constrained.cc:
1802         Likewise.
1803         * testsuite/25_algorithms/swap_ranges/1.cc: Qualify call to
1804         swap_ranges.
1805
1806 2021-05-21  Patrick Palka  <ppalka@redhat.com>
1807
1808         PR libstdc++/100606
1809         * include/std/ranges (drop_while_view::begin): Assert the
1810         precondition added by LWG 3490.
1811
1812 2021-05-21  Patrick Palka  <ppalka@redhat.com>
1813
1814         PR libstdc++/100690
1815         * include/std/ranges (iota_view::_Sentinel::_M_distance_from):
1816         Split out this member function from ...
1817         (iota_view::_Sentinel::operator-): ... here, for sake of access
1818         control.
1819         * testsuite/std/ranges/iota/iota_view.cc (test05): New test.
1820
1821 2021-05-20  Jonathan Wakely  <jwakely@redhat.com>
1822
1823         * include/bits/random.tcc (__representable_as_double)
1824         (__p1_representable_as_double): Add "" to static asserts.
1825
1826 2021-05-20  Jonathan Wakely  <jwakely@redhat.com>
1827
1828         PR libstdc++/100676
1829         * include/bits/c++config (__glibcxx_assert_1): Rename to ...
1830         (__glibcxx_constexpr_assert): ... this.
1831         (__glibcxx_assert_impl): Use __glibcxx_constexpr_assert.
1832         (__glibcxx_assert): Define as either __glibcxx_constexpr_assert
1833         or __glibcxx_assert_impl.
1834         (__glibcxx_assert_2): Remove
1835         * include/debug/macros.h (_GLIBCXX_DEBUG_VERIFY_AT_F): Use
1836         __glibcxx_constexpr_assert instead of __glibcxx_assert_1.
1837         * testsuite/21_strings/basic_string_view/element_access/char/back_constexpr_neg.cc:
1838         Adjust expected error.
1839         * testsuite/21_strings/basic_string_view/element_access/char/constexpr_neg.cc:
1840         Likewise.
1841         * testsuite/21_strings/basic_string_view/element_access/char/front_constexpr_neg.cc:
1842         Likewise.
1843         Likewise.
1844         * testsuite/21_strings/basic_string_view/element_access/wchar_t/back_constexpr_neg.cc:
1845         Likewise.
1846         * testsuite/21_strings/basic_string_view/element_access/wchar_t/constexpr_neg.cc:
1847         Likewise.
1848         * testsuite/21_strings/basic_string_view/element_access/wchar_t/front_constexpr_neg.cc:
1849         Likewise.
1850         * testsuite/23_containers/span/back_neg.cc: Likewise.
1851         * testsuite/23_containers/span/front_neg.cc: Likewise.
1852         * testsuite/23_containers/span/index_op_neg.cc: Likewise.
1853
1854 2021-05-20  Patrick Palka  <ppalka@redhat.com>
1855
1856         PR libstdc++/100639
1857         * include/bits/stl_iterator.h (reverse_iterator::difference_type):
1858         In C++20 mode, define in terms of iter_difference_t as per P0896R4.
1859         (reverse_iterator::reference): Likewise, but with iter_reference_t.
1860         (reverse_iterator::value_type): Likewise, but with iter_value_t.
1861         * testsuite/std/ranges/adaptors/reverse.cc (test08): New test.
1862         * testsuite/24_iterators/reverse_iterator/100639.cc: New test.
1863
1864 2021-05-20  Joern Rennecke  <joern.rennecke@riscy-ip.com>
1865
1866         PR libstdc++/100361
1867         * include/std/charconv (to_chars): Hide the overloads for
1868         floating-point types for 16 bit targets.
1869         * src/c++17/floating_to_chars.cc: Don't compile for 16 bit targets.
1870         * testsuite/20_util/to_chars/double.cc: Run this test only on
1871         size32plus targets.
1872         * testsuite/20_util/to_chars/float.cc: Likewise.
1873         * testsuite/20_util/to_chars/long_double.cc: Likewise.
1874
1875 2021-05-18  Patrick Palka  <ppalka@redhat.com>
1876
1877         PR libstdc++/100631
1878         * include/std/ranges (elements_view::_Sentinel::operator-): Use
1879         _M_distance_from in the other operator- overload too.
1880         * testsuite/std/ranges/adaptors/elements.cc (test06): Augment test.
1881
1882 2021-05-18  Thomas Schwinge  <thomas@codesourcery.com>
1883
1884         * testsuite/lib/prune.exp: Add note about 'dg-note'.
1885
1886 2021-05-18  Patrick Palka  <ppalka@redhat.com>
1887
1888         PR libstdc++/100475
1889         * include/std/ranges (__box::__box): Use non-list-initialization
1890         in member initializer list of in-place constructor of the
1891         partial specialization for semiregular types.
1892         (__box::operator->): Use std::__addressof.
1893         * testsuite/std/ranges/adaptors/detail/semiregular_box.cc
1894         (test02): New test.
1895         * testsuite/std/ranges/single_view.cc (test04): New test.
1896
1897 2021-05-18  Patrick Palka  <ppalka@redhat.com>
1898
1899         PR libstdc++/100621
1900         * include/std/ranges (reverse_view::_S_needs_cached_begin):
1901         Set to true if the underlying non-common random-access range
1902         doesn't have a sized sentinel.
1903
1904 2021-05-18  Patrick Palka  <ppalka@redhat.com>
1905
1906         PR libstdc++/100631
1907         * include/std/ranges (elements_view::_Iterator): Also befriend
1908         _Sentinel<!_Const>.
1909         (elements_view::_Sentinel::_M_equal): Templatize.
1910         (elements_view::_Sentinel::_M_distance_from): Split out from ...
1911         (elements_view::_Sentinel::operator-): ... here.  Depend on
1912         _Base2 instead of _Base in the return type.
1913         * testsuite/std/ranges/adaptors/elements.cc (test06, test07):
1914         New tests.
1915
1916 2021-05-17  Thomas Rodgers  <rodgert@twrodgers.com>
1917
1918         * include/bits/atomic_wait.h (__waiter::_M_do_wait_v): loop
1919         until value change observed.
1920         (__waiter_base::_M_laundered): New member.
1921         (__waiter_base::_M_notify): Check _M_laundered to determine
1922         whether to wake one or all.
1923         (__detail::__atomic_compare): Return true if call to
1924         __builtin_memcmp() == 0.
1925         (__waiter_base::_S_do_spin_v): Adjust predicate.
1926         * testsuite/29_atomics/atomic/wait_notify/100334.cc: New
1927         test.
1928
1929 2021-05-17  Jonathan Wakely  <jwakely@redhat.com>
1930
1931         PR libstdc++/100630
1932         * include/experimental/bits/fs_path.h (__is_constructible_from):
1933         Test construction from a const lvalue, not an rvalue.
1934         * testsuite/27_io/filesystem/path/construct/100630.cc: New test.
1935         * testsuite/experimental/filesystem/path/construct/100630.cc:
1936         New test.
1937
1938 2021-05-17  Antony Polukhin  <antoshkka@gmail.com>
1939
1940         PR libstdc++/89728
1941         * include/bits/locale_facets.h (ctype<basic_string<C,T,A>>):
1942         Declare (but do not define) partial specialization.
1943         * testsuite/22_locale/ctype/is/string/89728_neg.cc: New test.
1944
1945 2021-05-17  Jonathan Wakely  <jwakely@redhat.com>
1946
1947         * include/std/thread (jthread::_S_create): Fix static assert
1948         message.
1949         * testsuite/30_threads/jthread/95989.cc: Re-enable test.
1950         * testsuite/30_threads/jthread/jthread.cc: Do not require
1951         pthread effective target.
1952         * testsuite/30_threads/jthread/2.cc: Moved to...
1953         * testsuite/30_threads/jthread/version.cc: ...here.
1954
1955 2021-05-17  Jonathan Wakely  <jwakely@redhat.com>
1956
1957         * doc/Makefile.am: Simplify doxygen recipes and use --latex_cmd.
1958         * doc/Makefile.in: Regenerate.
1959         * doc/doxygen/user.cfg.in (LATEX_CMD_NAME): Add placeholder
1960         value.
1961         * scripts/run_doxygen (print_usage): Always print to stdout and
1962         do not exit.
1963         (fail): New function for exiting on error.
1964         (parse_options): Handle --latex_cmd. Do not treat --help the
1965         same as errors. Simplify handling of required arguments.
1966
1967 2021-05-12  Jonathan Wakely  <jwakely@redhat.com>
1968
1969         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc:
1970         Increase dg-timeout-factor to 4. Fix -Wunused-parameter
1971         warnings. Replace bitwise AND with logical AND in loop
1972         condition.
1973         * testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc:
1974         Replace bitwise AND with logical AND in loop condition.
1975         * testsuite/util/pstl/test_utils.h: Remove unused parameter
1976         names.
1977
1978 2021-05-11  Patrick Palka  <ppalka@redhat.com>
1979
1980         * src/c++17/ryu/LOCAL_PATCHES: Update.
1981         * src/c++17/ryu/ryu_generic_128.h: Remove extern "C".
1982         Remove declarations for never-defined functions.
1983         * testsuite/20_util/to_chars/4.cc: New test.
1984
1985 2021-05-11  Jonathan Wakely  <jwakely@redhat.com>
1986
1987         * testsuite/20_util/headers/memory/synopsis.cc: Define C++98
1988         alternative for macro.
1989         * testsuite/20_util/shared_ptr/creation/99006.cc: Add effective
1990         target keyword.
1991         * testsuite/25_algorithms/copy/debug/99402.cc: Avoid C++11
1992         syntax.
1993
1994 2021-05-11  Jonathan Wakely  <jwakely@redhat.com>
1995
1996         * include/bits/allocator.h (allocator<void>) [C++20]: Add
1997         missing noexcept to constructor. Restore missing POCMA and
1998         is_always_equal_traits.
1999         [C++17]: Make construct and destroy members private and
2000         declare allocator_traits as a friend.
2001         * include/bits/memoryfwd.h (allocator_traits): Declare.
2002         * include/ext/malloc_allocator.h (malloc_allocator::allocate):
2003         Add nodiscard attribute. Add static assertion for LWG 3307.
2004         * include/ext/new_allocator.h (new_allocator::allocate): Add
2005         static assertion for LWG 3307.
2006         * testsuite/20_util/allocator/void.cc: Check that converting
2007         constructor is noexcept. Check for propagation traits and
2008         size_type and difference_type. Check that pointer and
2009         const_pointer are gone in C++20.
2010
2011 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
2012
2013         * include/std/stop_token: Remove TODO comment.
2014
2015 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
2016
2017         * include/bits/shared_ptr_base.h (__shared_count(unique_ptr&&)):
2018         Initialize a non-reference deleter from an rvalue, as per LWG
2019         3548.
2020         (__shared_ptr::_UniqCompatible): Add missing constraint.
2021         * testsuite/20_util/shared_ptr/cons/lwg3548.cc: New test.
2022         * testsuite/20_util/shared_ptr/cons/unique_ptr_deleter.cc: Check
2023         constraints.
2024
2025 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
2026
2027         * testsuite/17_intro/headers/c++2017/all_attributes.cc: Remove
2028         -std=gnu++17 from dg-options directive.
2029         * testsuite/17_intro/headers/c++2017/all_no_exceptions.cc:
2030         Likewise.
2031         * testsuite/17_intro/headers/c++2017/all_pedantic_errors.cc:
2032         Likewise.
2033         * testsuite/17_intro/headers/c++2017/operator_names.cc:
2034         Likewise.
2035         * testsuite/17_intro/headers/c++2017/parallel_mode.cc: Likewise.
2036         * testsuite/17_intro/headers/c++2017/stdc++.cc: Likewise.
2037         * testsuite/17_intro/headers/c++2017/stdc++_multiple_inclusion.cc:
2038         Likewise.
2039         * testsuite/18_support/aligned_alloc/aligned_alloc.cc: Likewise.
2040         * testsuite/18_support/byte/81076.cc: Likewise.
2041         * testsuite/18_support/byte/global_neg.cc: Likewise.
2042         * testsuite/18_support/byte/ops.cc: Likewise.
2043         * testsuite/18_support/byte/requirements.cc: Likewise.
2044         * testsuite/18_support/headers/cfloat/values_c++17.cc: Likewise.
2045         * testsuite/18_support/launder/1.cc: Likewise.
2046         * testsuite/18_support/launder/nodiscard.cc: Likewise.
2047         * testsuite/18_support/launder/requirements.cc: Likewise.
2048         * testsuite/18_support/launder/requirements_neg.cc: Likewise.
2049         * testsuite/18_support/new_aligned.cc: Likewise.
2050         * testsuite/18_support/uncaught_exceptions/uncaught_exceptions.cc:
2051         Likewise.
2052         * testsuite/19_diagnostics/error_code/is_error_code_v.cc:
2053         Likewise.
2054         * testsuite/19_diagnostics/error_condition/hash.cc: Likewise.
2055         * testsuite/20_util/addressof/requirements/constexpr.cc:
2056         Likewise.
2057         * testsuite/20_util/as_const/1.cc: Likewise.
2058         * testsuite/20_util/as_const/rvalue_neg.cc: Likewise.
2059         * testsuite/20_util/bind/83427.cc: Likewise.
2060         * testsuite/20_util/bind/is_placeholder_v.cc: Likewise.
2061         * testsuite/20_util/bool_constant/requirements.cc: Likewise.
2062         * testsuite/20_util/duration/arithmetic/constexpr_c++17.cc:
2063         Likewise.
2064         * testsuite/20_util/duration/requirements/treat_as_floating_point_v.cc:
2065         Likewise.
2066         * testsuite/20_util/duration_cast/rounding.cc: Likewise.
2067         * testsuite/20_util/enable_shared_from_this/members/weak_from_this.cc:
2068         Likewise.
2069         * testsuite/20_util/from_chars/1_neg.cc: Likewise.
2070         * testsuite/20_util/from_chars/requirements.cc: Likewise.
2071         * testsuite/20_util/function/91456.cc: Likewise.
2072         * testsuite/20_util/function/cons/deduction.cc: Likewise.
2073         * testsuite/20_util/function_objects/83607.cc: Likewise.
2074         * testsuite/20_util/function_objects/invoke/59768.cc: Likewise.
2075         * testsuite/20_util/function_objects/mem_fn/80478.cc: Likewise.
2076         * testsuite/20_util/function_objects/not_fn/1.cc: Likewise.
2077         * testsuite/20_util/function_objects/not_fn/87538.cc: Likewise.
2078         * testsuite/20_util/has_unique_object_representations/requirements/explicit_instantiation.cc:
2079         Likewise.
2080         * testsuite/20_util/has_unique_object_representations/requirements/typedefs.cc:
2081         Likewise.
2082         * testsuite/20_util/has_unique_object_representations/value.cc:
2083         Likewise.
2084         * testsuite/20_util/hash/nullptr.cc: Likewise.
2085         * testsuite/20_util/in_place/requirements.cc: Likewise.
2086         * testsuite/20_util/is_aggregate/incomplete_neg.cc: Likewise.
2087         * testsuite/20_util/is_aggregate/requirements/explicit_instantiation.cc:
2088         Likewise.
2089         * testsuite/20_util/is_aggregate/requirements/typedefs.cc:
2090         Likewise.
2091         * testsuite/20_util/is_aggregate/value.cc: Likewise.
2092         * testsuite/20_util/is_invocable/83395.cc: Likewise.
2093         * testsuite/20_util/is_invocable/91456.cc: Likewise.
2094         * testsuite/20_util/is_invocable/requirements/explicit_instantiation.cc:
2095         Likewise.
2096         * testsuite/20_util/is_invocable/requirements/typedefs.cc:
2097         Likewise.
2098         * testsuite/20_util/is_invocable/value.cc: Likewise.
2099         * testsuite/20_util/is_literal_type/deprecated-1z.cc: Likewise.
2100         * testsuite/20_util/is_nothrow_constructible/94003.cc: Likewise.
2101         * testsuite/20_util/is_nothrow_invocable/83395.cc: Likewise.
2102         * testsuite/20_util/is_nothrow_invocable/requirements/explicit_instantiation.cc:
2103         Likewise.
2104         * testsuite/20_util/is_nothrow_invocable/requirements/typedefs.cc: Likewise.
2105         * testsuite/20_util/is_nothrow_invocable/value.cc: Likewise.
2106         * testsuite/20_util/is_nothrow_swappable/requirements/explicit_instantiation.cc:
2107         Likewise.
2108         * testsuite/20_util/is_nothrow_swappable/requirements/typedefs.cc:
2109         Likewise.
2110         * testsuite/20_util/is_nothrow_swappable/value.cc: Likewise.
2111         * testsuite/20_util/is_nothrow_swappable_with/requirements/explicit_instantiation.cc:
2112         Likewise.
2113         * testsuite/20_util/is_nothrow_swappable_with/requirements/typedefs.cc:
2114         Likewise.
2115         * testsuite/20_util/is_nothrow_swappable_with/value.cc:
2116         Likewise.
2117         * testsuite/20_util/is_swappable/requirements/explicit_instantiation.cc:
2118         Likewise.
2119         * testsuite/20_util/is_swappable/requirements/typedefs.cc:
2120         Likewise.
2121         * testsuite/20_util/is_swappable/value.cc: Likewise.
2122         * testsuite/20_util/is_swappable_with/requirements/explicit_instantiation.cc:
2123         Likewise.
2124         * testsuite/20_util/is_swappable_with/requirements/typedefs.cc:
2125         Likewise.
2126         * testsuite/20_util/is_swappable_with/value.cc: Likewise.
2127         * testsuite/20_util/logical_traits/83134.cc: Likewise.
2128         * testsuite/20_util/logical_traits/requirements/explicit_instantiation.cc:
2129         Likewise.
2130         * testsuite/20_util/logical_traits/requirements/typedefs.cc:
2131         Likewise.
2132         * testsuite/20_util/logical_traits/value.cc: Likewise.
2133         * testsuite/20_util/pair/cons/deduction.cc: Likewise.
2134         * testsuite/20_util/pair/swap_cxx17.cc: Likewise.
2135         * testsuite/20_util/ratio/requirements/ratio_equal_v.cc:
2136         Likewise.
2137         * testsuite/20_util/reference_wrapper/83427.cc: Likewise.
2138         * testsuite/20_util/reference_wrapper/deduction.cc: Likewise.
2139         * testsuite/20_util/shared_ptr/casts/reinterpret.cc: Likewise.
2140         * testsuite/20_util/shared_ptr/cons/deduction.cc: Likewise.
2141         * testsuite/20_util/shared_ptr/requirements/weak_type.cc:
2142         Likewise.
2143         * testsuite/20_util/time_point/arithmetic/constexpr.cc:
2144         Likewise.
2145         * testsuite/20_util/time_point_cast/rounding.cc: Likewise.
2146         * testsuite/20_util/to_chars/3.cc: Likewise.
2147         * testsuite/20_util/to_chars/chars_format.cc: Likewise.
2148         * testsuite/20_util/to_chars/lwg3266.cc: Likewise.
2149         * testsuite/20_util/to_chars/requirements.cc: Likewise.
2150         * testsuite/20_util/tuple/78939.cc: Likewise.
2151         * testsuite/20_util/tuple/apply/1.cc: Likewise.
2152         * testsuite/20_util/tuple/apply/2.cc: Likewise.
2153         * testsuite/20_util/tuple/cons/deduction.cc: Likewise.
2154         * testsuite/20_util/tuple/make_from_tuple/1.cc: Likewise.
2155         * testsuite/20_util/tuple/make_from_tuple/2.cc: Likewise.
2156         * testsuite/20_util/tuple/swap_cxx17.cc: Likewise.
2157         * testsuite/20_util/tuple/tuple_size_v.cc: Likewise.
2158         * testsuite/20_util/unique_ptr/cons/deduction_neg.cc: Likewise.
2159         * testsuite/20_util/uses_allocator/requirements/uses_allocator_v.cc:
2160         Likewise.
2161         * testsuite/20_util/variable_templates_for_traits.cc: Likewise.
2162         * testsuite/20_util/void_t/1.cc: Likewise.
2163         * testsuite/20_util/weak_ptr/cons/deduction.cc: Likewise.
2164         * testsuite/24_iterators/container_access.cc: Likewise.
2165         * testsuite/24_iterators/headers/iterator/range_access_c++17.cc:
2166         Likewise.
2167         * testsuite/24_iterators/headers/iterator/synopsis_c++17.cc:
2168         Likewise.
2169         * testsuite/24_iterators/range_access/range_access_cpp17.cc:
2170         Likewise.
2171         * testsuite/24_iterators/range_access/range_access_cpp17_neg.cc:
2172         Likewise.
2173         * testsuite/26_numerics/gcd/gcd_neg.cc: Likewise.
2174         * testsuite/26_numerics/headers/cmath/functions_std_c++17.cc:
2175         Likewise.
2176         * testsuite/26_numerics/headers/cmath/hypot.cc: Likewise.
2177         * testsuite/26_numerics/headers/cmath/special_functions_global.cc:
2178         Likewise.
2179         * testsuite/26_numerics/lcm/1.cc: Likewise.
2180         * testsuite/26_numerics/lcm/lcm_neg.cc: Likewise.
2181         * testsuite/26_numerics/valarray/deduction.cc: Likewise.
2182         * testsuite/27_io/basic_ostream/inserters_other/char/lwg2221.cc:
2183         Likewise.
2184         * testsuite/27_io/manipulators/standard/char/quoted_sv.cc:
2185         Likewise.
2186         * testsuite/27_io/manipulators/standard/wchar_t/quoted_sv.cc:
2187         Likewise.
2188         * testsuite/27_io/types/4.cc: Likewise.
2189         * testsuite/28_regex/basic_regex/ctors/deduction.cc: Likewise.
2190         * testsuite/libstdc++-prettyprinters/91997.cc: Likewise.
2191         * testsuite/libstdc++-prettyprinters/cxx17.cc: Likewise.
2192
2193 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
2194
2195         * testsuite/20_util/function_objects/searchers.cc: Remove
2196         -std=gnu++17 from dg-options directive.
2197         * testsuite/20_util/specialized_algorithms/memory_management_tools/1.cc:
2198         Likewise.
2199         * testsuite/20_util/specialized_algorithms/memory_management_tools/destroy_neg.cc:
2200         Likewise.
2201         * testsuite/20_util/specialized_algorithms/uninitialized_value_construct/94540.cc:
2202         Likewise.
2203         * testsuite/20_util/specialized_algorithms/uninitialized_value_construct/94831.cc:
2204         Likewise.
2205         * testsuite/20_util/specialized_algorithms/uninitialized_value_construct_n/94540.cc:
2206         Likewise.
2207         * testsuite/20_util/specialized_algorithms/uninitialized_value_construct_n/sizes.cc:
2208         Likewise.
2209         * testsuite/20_util/unique_ptr/specialized_algorithms/swap_cxx17.cc:
2210         Likewise.
2211         * testsuite/25_algorithms/clamp/1.cc: Likewise.
2212         * testsuite/25_algorithms/clamp/2.cc: Likewise.
2213         * testsuite/25_algorithms/clamp/constexpr.cc: Likewise.
2214         * testsuite/25_algorithms/clamp/requirements/explicit_instantiation/1.cc:
2215         Likewise.
2216         * testsuite/25_algorithms/clamp/requirements/explicit_instantiation/pod.cc:
2217         Likewise.
2218         * testsuite/25_algorithms/for_each/for_each_n.cc: Likewise.
2219         * testsuite/25_algorithms/for_each/for_each_n_debug.cc:
2220         Likewise.
2221         * testsuite/25_algorithms/sample/1.cc: Likewise.
2222         * testsuite/25_algorithms/sample/2.cc: Likewise.
2223         * testsuite/25_algorithms/sample/3.cc: Likewise.
2224         * testsuite/25_algorithms/sample/81221.cc: Likewise.
2225         * testsuite/25_algorithms/search/searcher.cc: Likewise.
2226         * testsuite/26_numerics/exclusive_scan/1.cc: Likewise.
2227         * testsuite/26_numerics/inclusive_scan/1.cc: Likewise.
2228         * testsuite/26_numerics/reduce/1.cc: Likewise.
2229         * testsuite/26_numerics/reduce/2.cc: Likewise.
2230         * testsuite/26_numerics/transform_exclusive_scan/1.cc: Likewise.
2231         * testsuite/26_numerics/transform_inclusive_scan/1.cc: Likewise.
2232         * testsuite/26_numerics/transform_reduce/1.cc: Likewise.
2233
2234 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
2235
2236         * testsuite/23_containers/array/cons/deduction.cc: Remove
2237         -std=gnu++17 from dg-options directive.
2238         * testsuite/23_containers/array/cons/deduction_neg.cc: Likewise.
2239         * testsuite/23_containers/array/element_access/constexpr_c++17.cc:
2240         Likewise.
2241         * testsuite/23_containers/array/requirements/constexpr_iter.cc:
2242         Likewise.
2243         * testsuite/23_containers/array/specialized_algorithms/swap_cxx17.cc:
2244         Likewise.
2245         * testsuite/23_containers/deque/cons/deduction.cc: Likewise.
2246         * testsuite/23_containers/deque/modifiers/emplace/cxx17_return.cc:
2247         Likewise.
2248         * testsuite/23_containers/forward_list/cons/deduction.cc:
2249         Likewise.
2250         * testsuite/23_containers/forward_list/modifiers/emplace_cxx17_return.cc:
2251         Likewise.
2252         * testsuite/23_containers/list/cons/deduction.cc: Likewise.
2253         * testsuite/23_containers/list/modifiers/emplace/cxx17_return.cc:
2254         Likewise.
2255         * testsuite/23_containers/map/cons/deduction.cc: Likewise.
2256         * testsuite/23_containers/map/modifiers/extract.cc: Likewise.
2257         * testsuite/23_containers/map/modifiers/insert/83226.cc:
2258         Likewise.
2259         * testsuite/23_containers/map/modifiers/insert_or_assign/1.cc:
2260         Likewise.
2261         * testsuite/23_containers/map/modifiers/merge.cc: Likewise.
2262         * testsuite/23_containers/map/modifiers/try_emplace/1.cc:
2263         Likewise.
2264         * testsuite/23_containers/multimap/cons/deduction.cc: Likewise.
2265         * testsuite/23_containers/multimap/modifiers/extract.cc:
2266         Likewise.
2267         * testsuite/23_containers/multimap/modifiers/merge.cc: Likewise.
2268         * testsuite/23_containers/multiset/cons/deduction.cc: Likewise.
2269         * testsuite/23_containers/multiset/modifiers/extract.cc:
2270         Likewise.
2271         * testsuite/23_containers/multiset/modifiers/merge.cc: Likewise.
2272         * testsuite/23_containers/priority_queue/deduction.cc: Likewise.
2273         * testsuite/23_containers/queue/deduction.cc: Likewise.
2274         * testsuite/23_containers/queue/members/emplace_cxx17_return.cc:
2275         Likewise.
2276         * testsuite/23_containers/set/cons/deduction.cc: Likewise.
2277         * testsuite/23_containers/set/modifiers/extract.cc: Likewise.
2278         * testsuite/23_containers/set/modifiers/merge.cc: Likewise.
2279         * testsuite/23_containers/set/modifiers/node_swap.cc: Likewise.
2280         * testsuite/23_containers/stack/deduction.cc: Likewise.
2281         * testsuite/23_containers/stack/members/emplace_cxx17_return.cc:
2282         Likewise.
2283         * testsuite/23_containers/unordered_map/cons/deduction.cc:
2284         Likewise.
2285         * testsuite/23_containers/unordered_map/modifiers/extract.cc:
2286         Likewise.
2287         * testsuite/23_containers/unordered_map/modifiers/insert_or_assign.cc:
2288         Likewise.
2289         * testsuite/23_containers/unordered_map/modifiers/merge.cc:
2290         Likewise.
2291         * testsuite/23_containers/unordered_map/modifiers/try_emplace.cc:
2292         Likewise.
2293         * testsuite/23_containers/unordered_multimap/cons/deduction.cc:
2294         Likewise.
2295         * testsuite/23_containers/unordered_multimap/modifiers/extract.cc:
2296         Likewise.
2297         * testsuite/23_containers/unordered_multimap/modifiers/merge.cc:
2298         Likewise.
2299         * testsuite/23_containers/unordered_multiset/cons/deduction.cc:
2300         Likewise.
2301         * testsuite/23_containers/unordered_multiset/modifiers/extract.cc:
2302         Likewise.
2303         * testsuite/23_containers/unordered_multiset/modifiers/merge.cc:
2304         Likewise.
2305         * testsuite/23_containers/unordered_set/cons/deduction.cc:
2306         Likewise.
2307         * testsuite/23_containers/unordered_set/modifiers/extract.cc:
2308         Likewise.
2309         * testsuite/23_containers/unordered_set/modifiers/merge.cc:
2310         Likewise.
2311         * testsuite/23_containers/vector/bool/emplace_cxx17_return.cc:
2312         Likewise.
2313         * testsuite/23_containers/vector/cons/89164_c++17.cc: Likewise.
2314         * testsuite/23_containers/vector/cons/deduction.cc: Likewise.
2315         * testsuite/23_containers/vector/modifiers/emplace/cxx17_return.cc:
2316         Likewise.
2317
2318 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
2319
2320         * testsuite/21_strings/basic_string/79162.cc: Remove
2321         -std=gnu++17 from dg-options directive.
2322         * testsuite/21_strings/basic_string/cons/char/7.cc: Likewise.
2323         * testsuite/21_strings/basic_string/cons/char/79162.cc:
2324         Likewise.
2325         * testsuite/21_strings/basic_string/cons/char/86138.cc:
2326         Likewise.
2327         * testsuite/21_strings/basic_string/cons/char/9.cc: Likewise.
2328         * testsuite/21_strings/basic_string/cons/char/deduction.cc:
2329         Likewise.
2330         * testsuite/21_strings/basic_string/cons/char/moveable2_c++17.cc:
2331         Likewise.
2332         * testsuite/21_strings/basic_string/cons/wchar_t/7.cc: Likewise.
2333         * testsuite/21_strings/basic_string/cons/wchar_t/79162.cc:
2334         Likewise.
2335         * testsuite/21_strings/basic_string/cons/wchar_t/86138.cc:
2336         Likewise.
2337         * testsuite/21_strings/basic_string/cons/wchar_t/9.cc: Likewise.
2338         * testsuite/21_strings/basic_string/cons/wchar_t/deduction.cc:
2339         Likewise.
2340         * testsuite/21_strings/basic_string/cons/wchar_t/moveable2_c++17.cc:
2341         Likewise.
2342         * testsuite/21_strings/basic_string/hash/hash.cc: Likewise.
2343         * testsuite/21_strings/basic_string/lwg2758.cc: Likewise.
2344         * testsuite/21_strings/basic_string/lwg2946.cc: Likewise.
2345         * testsuite/21_strings/basic_string/modifiers/append/char/4.cc:
2346         Likewise.
2347         * testsuite/21_strings/basic_string/modifiers/append/wchar_t/4.cc:
2348         Likewise.
2349         * testsuite/21_strings/basic_string/modifiers/assign/char/4.cc:
2350         Likewise.
2351         * testsuite/21_strings/basic_string/modifiers/assign/wchar_t/4.cc:
2352         Likewise.
2353         * testsuite/21_strings/basic_string/modifiers/insert/char/3.cc:
2354         Likewise.
2355         * testsuite/21_strings/basic_string/modifiers/insert/wchar_t/3.cc:
2356         Likewise.
2357         * testsuite/21_strings/basic_string/modifiers/replace/char/7.cc:
2358         Likewise.
2359         * testsuite/21_strings/basic_string/modifiers/replace/wchar_t/7.cc:
2360         Likewise.
2361         * testsuite/21_strings/basic_string/operations/compare/char/2.cc:
2362         Likewise.
2363         * testsuite/21_strings/basic_string/operations/compare/wchar_t/2.cc:
2364         Likewise.
2365         * testsuite/21_strings/basic_string/operations/data/char/2.cc:
2366         Likewise.
2367         * testsuite/21_strings/basic_string/operations/data/char/86169.cc:
2368         Likewise.
2369         * testsuite/21_strings/basic_string/operations/data/wchar_t/2.cc:
2370         Likewise.
2371         * testsuite/21_strings/basic_string/operations/find/char/5.cc:
2372         Likewise.
2373         * testsuite/21_strings/basic_string/operations/find/wchar_t/5.cc:
2374         Likewise.
2375         * testsuite/21_strings/basic_string/operators/char/5.cc:
2376         Likewise.
2377         * testsuite/21_strings/basic_string/operators/wchar_t/5.cc:
2378         Likewise.
2379         * testsuite/21_strings/basic_string_view/capacity/1.cc:
2380         Likewise.
2381         * testsuite/21_strings/basic_string_view/capacity/empty_neg.cc:
2382         Likewise.
2383         * testsuite/21_strings/basic_string_view/cons/char/1.cc:
2384         Likewise.
2385         * testsuite/21_strings/basic_string_view/cons/char/2.cc:
2386         Likewise.
2387         * testsuite/21_strings/basic_string_view/cons/char/3.cc:
2388         Likewise.
2389         * testsuite/21_strings/basic_string_view/cons/char/nonnull.cc:
2390         Likewise.
2391         * testsuite/21_strings/basic_string_view/cons/wchar_t/1.cc:
2392         Likewise.
2393         * testsuite/21_strings/basic_string_view/cons/wchar_t/2.cc:
2394         Likewise.
2395         * testsuite/21_strings/basic_string_view/cons/wchar_t/3.cc:
2396         Likewise.
2397         * testsuite/21_strings/basic_string_view/cons/wchar_t/nonnull.cc:
2398         Likewise.
2399         * testsuite/21_strings/basic_string_view/element_access/char/1.cc:
2400         Likewise.
2401         * testsuite/21_strings/basic_string_view/element_access/char/2.cc:
2402         Likewise.
2403         * testsuite/21_strings/basic_string_view/element_access/char/back_constexpr_neg.cc:
2404         Likewise.
2405         * testsuite/21_strings/basic_string_view/element_access/char/constexpr.cc:
2406         Likewise.
2407         * testsuite/21_strings/basic_string_view/element_access/char/constexpr_neg.cc:
2408         Likewise.
2409         * testsuite/21_strings/basic_string_view/element_access/char/empty.cc:
2410         Likewise.
2411         * testsuite/21_strings/basic_string_view/element_access/char/front_back.cc:
2412         Likewise.
2413         * testsuite/21_strings/basic_string_view/element_access/char/front_back_constexpr.cc:
2414         Likewise.
2415         * testsuite/21_strings/basic_string_view/element_access/char/front_constexpr_neg.cc:
2416         Likewise.
2417         * testsuite/21_strings/basic_string_view/element_access/wchar_t/1.cc:
2418         Likewise.
2419         * testsuite/21_strings/basic_string_view/element_access/wchar_t/2.cc:
2420         Likewise.
2421         * testsuite/21_strings/basic_string_view/element_access/wchar_t/back_constexpr_neg.cc:
2422         Likewise.
2423         * testsuite/21_strings/basic_string_view/element_access/wchar_t/constexpr.cc:
2424         Likewise.
2425         * testsuite/21_strings/basic_string_view/element_access/wchar_t/constexpr_neg.cc:
2426         Likewise.
2427         * testsuite/21_strings/basic_string_view/element_access/wchar_t/empty.cc:
2428         Likewise.
2429         * testsuite/21_strings/basic_string_view/element_access/wchar_t/front_back.cc:
2430         Likewise.
2431         * testsuite/21_strings/basic_string_view/element_access/wchar_t/front_constexpr_neg.cc:
2432         Likewise.
2433         * testsuite/21_strings/basic_string_view/include.cc: Likewise.
2434         * testsuite/21_strings/basic_string_view/inserters/94051.cc:
2435         Likewise.
2436         * testsuite/21_strings/basic_string_view/inserters/char/1.cc:
2437         Likewise.
2438         * testsuite/21_strings/basic_string_view/inserters/char/2.cc:
2439         Likewise.
2440         * testsuite/21_strings/basic_string_view/inserters/char/3.cc:
2441         Likewise.
2442         * testsuite/21_strings/basic_string_view/inserters/pod/10081-out.cc:
2443         Likewise.
2444         * testsuite/21_strings/basic_string_view/inserters/wchar_t/1.cc:
2445         Likewise.
2446         * testsuite/21_strings/basic_string_view/inserters/wchar_t/2.cc:
2447         Likewise.
2448         * testsuite/21_strings/basic_string_view/inserters/wchar_t/3.cc:
2449         Likewise.
2450         * testsuite/21_strings/basic_string_view/literals/types-char8_t.cc:
2451         Likewise.
2452         * testsuite/21_strings/basic_string_view/literals/types.cc:
2453         Likewise.
2454         * testsuite/21_strings/basic_string_view/literals/values-char8_t.cc:
2455         Likewise.
2456         * testsuite/21_strings/basic_string_view/literals/values.cc:
2457         Likewise.
2458         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/char/1.cc:
2459         Likewise.
2460         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/wchar_t/1.cc:
2461         Likewise.
2462         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/char/1.cc:
2463         Likewise.
2464         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/wchar_t/1.cc:
2465         Likewise.
2466         * testsuite/21_strings/basic_string_view/modifiers/swap/char/1.cc:
2467         Likewise.
2468         * testsuite/21_strings/basic_string_view/modifiers/swap/wchar_t/1.cc:
2469         Likewise.
2470         * testsuite/21_strings/basic_string_view/operations/compare/char/1.cc:
2471         Likewise.
2472         * testsuite/21_strings/basic_string_view/operations/compare/char/13650.cc:
2473         Likewise.
2474         * testsuite/21_strings/basic_string_view/operations/compare/char/2.cc:
2475         Likewise.
2476         * testsuite/21_strings/basic_string_view/operations/compare/char/70483.cc:
2477         Likewise.
2478         * testsuite/21_strings/basic_string_view/operations/compare/char/nonnull.cc:
2479         Likewise.
2480         * testsuite/21_strings/basic_string_view/operations/compare/wchar_t/1.cc:
2481         Likewise.
2482         * testsuite/21_strings/basic_string_view/operations/compare/wchar_t/13650.cc:
2483         Likewise.
2484         * testsuite/21_strings/basic_string_view/operations/compare/wchar_t/2.cc:
2485         Likewise.
2486         * testsuite/21_strings/basic_string_view/operations/copy/char/1.cc:
2487         Likewise.
2488         * testsuite/21_strings/basic_string_view/operations/copy/char/2.cc:
2489         Likewise.
2490         * testsuite/21_strings/basic_string_view/operations/copy/wchar_t/1.cc:
2491         Likewise.
2492         * testsuite/21_strings/basic_string_view/operations/copy/wchar_t/2.cc:
2493         Likewise.
2494         * testsuite/21_strings/basic_string_view/operations/data/char/1.cc:
2495         Likewise.
2496         * testsuite/21_strings/basic_string_view/operations/data/wchar_t/1.cc:
2497         Likewise.
2498         * testsuite/21_strings/basic_string_view/operations/find/char/1.cc:
2499         Likewise.
2500         * testsuite/21_strings/basic_string_view/operations/find/char/2.cc:
2501         Likewise.
2502         * testsuite/21_strings/basic_string_view/operations/find/char/3.cc:
2503         Likewise.
2504         * testsuite/21_strings/basic_string_view/operations/find/char/4.cc:
2505         Likewise.
2506         * testsuite/21_strings/basic_string_view/operations/find/char/nonnull.cc:
2507         Likewise.
2508         * testsuite/21_strings/basic_string_view/operations/find/wchar_t/1.cc:
2509         Likewise.
2510         * testsuite/21_strings/basic_string_view/operations/find/wchar_t/2.cc:
2511         Likewise.
2512         * testsuite/21_strings/basic_string_view/operations/find/wchar_t/3.cc:
2513         Likewise.
2514         * testsuite/21_strings/basic_string_view/operations/find/wchar_t/4.cc:
2515         Likewise.
2516         * testsuite/21_strings/basic_string_view/operations/rfind/char/1.cc:
2517         Likewise.
2518         * testsuite/21_strings/basic_string_view/operations/rfind/char/2.cc:
2519         Likewise.
2520         * testsuite/21_strings/basic_string_view/operations/rfind/char/3.cc:
2521         Likewise.
2522         * testsuite/21_strings/basic_string_view/operations/rfind/char/nonnull.cc:
2523         Likewise.
2524         * testsuite/21_strings/basic_string_view/operations/rfind/wchar_t/1.cc:
2525         Likewise.
2526         * testsuite/21_strings/basic_string_view/operations/rfind/wchar_t/2.cc:
2527         Likewise.
2528         * testsuite/21_strings/basic_string_view/operations/rfind/wchar_t/3.cc:
2529         Likewise.
2530         * testsuite/21_strings/basic_string_view/operations/string_conversion/1.cc:
2531         Likewise.
2532         * testsuite/21_strings/basic_string_view/operations/substr/char/1.cc:
2533         Likewise.
2534         * testsuite/21_strings/basic_string_view/operations/substr/char/83511.cc:
2535         Likewise.
2536         * testsuite/21_strings/basic_string_view/operations/substr/wchar_t/1.cc:
2537         Likewise.
2538         * testsuite/21_strings/basic_string_view/operations/substr/wchar_t/83511.cc:
2539         Likewise.
2540         * testsuite/21_strings/basic_string_view/operators/char/2.cc:
2541         Likewise.
2542         * testsuite/21_strings/basic_string_view/operators/char/89446.cc:
2543         Likewise.
2544         * testsuite/21_strings/basic_string_view/operators/wchar_t/2.cc:
2545         Likewise.
2546         * testsuite/21_strings/basic_string_view/operators/wchar_t/89446.cc:
2547         Likewise.
2548         * testsuite/21_strings/basic_string_view/range_access/char/1.cc:
2549         Likewise.
2550         * testsuite/21_strings/basic_string_view/range_access/wchar_t/1.cc:
2551         Likewise.
2552         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/1.cc:
2553         Likewise.
2554         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char/1.cc:
2555         Likewise.
2556         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char16_t/1.cc:
2557         Likewise.
2558         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char32_t/1.cc:
2559         Likewise.
2560         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char8_t/1.cc:
2561         Likewise.
2562         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/wchar_t/1.cc:
2563         Likewise.
2564         * testsuite/21_strings/basic_string_view/requirements/traits_neg.cc:
2565         Likewise.
2566         * testsuite/21_strings/basic_string_view/requirements/typedefs.cc:
2567         Likewise.
2568         * testsuite/21_strings/basic_string_view/typedefs.cc: Likewise.
2569         * testsuite/21_strings/basic_string_view/types/1.cc: Likewise.
2570         * testsuite/21_strings/char_traits/requirements/char/99181.cc:
2571         Likewise.
2572         * testsuite/21_strings/char_traits/requirements/constexpr_functions_c++17.cc:
2573
2574 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
2575
2576         * testsuite/20_util/memory_resource/1.cc: Remove -std=gnu++17
2577         from dg-options directive.
2578         * testsuite/20_util/memory_resource/2.cc: Likewise.
2579         * testsuite/20_util/monotonic_buffer_resource/1.cc: Likewise.
2580         * testsuite/20_util/monotonic_buffer_resource/93208.cc:
2581         Likewise.
2582         * testsuite/20_util/monotonic_buffer_resource/allocate.cc:
2583         Likewise.
2584         * testsuite/20_util/monotonic_buffer_resource/deallocate.cc:
2585         Likewise.
2586         * testsuite/20_util/monotonic_buffer_resource/release.cc:
2587         Likewise.
2588         * testsuite/20_util/monotonic_buffer_resource/upstream_resource.cc:
2589         Likewise.
2590         * testsuite/20_util/polymorphic_allocator/1.cc: Likewise.
2591         * testsuite/20_util/polymorphic_allocator/construct_pair.cc:
2592         Likewise.
2593         * testsuite/20_util/polymorphic_allocator/resource.cc: Likewise.
2594         * testsuite/20_util/polymorphic_allocator/select.cc: Likewise.
2595         * testsuite/20_util/synchronized_pool_resource/allocate.cc:
2596         Likewise.
2597         * testsuite/20_util/synchronized_pool_resource/allocate_single.cc:
2598         Likewise.
2599         * testsuite/20_util/synchronized_pool_resource/cons.cc:
2600         Likewise.
2601         * testsuite/20_util/synchronized_pool_resource/cons_single.cc:
2602         Likewise.
2603         * testsuite/20_util/synchronized_pool_resource/is_equal.cc:
2604         Likewise.
2605         * testsuite/20_util/synchronized_pool_resource/multithreaded.cc:
2606         Likewise.
2607         * testsuite/20_util/synchronized_pool_resource/options.cc:
2608         Likewise.
2609         * testsuite/20_util/synchronized_pool_resource/release.cc:
2610         Likewise.
2611         * testsuite/20_util/synchronized_pool_resource/release_single.cc:
2612         Likewise.
2613         * testsuite/20_util/unsynchronized_pool_resource/allocate-max-chunks.cc:
2614         Likewise.
2615         * testsuite/20_util/unsynchronized_pool_resource/allocate.cc:
2616         Likewise.
2617         * testsuite/20_util/unsynchronized_pool_resource/cons.cc:
2618         Likewise.
2619         * testsuite/20_util/unsynchronized_pool_resource/is_equal.cc:
2620         Likewise.
2621         * testsuite/20_util/unsynchronized_pool_resource/options.cc:
2622         Likewise.
2623         * testsuite/20_util/unsynchronized_pool_resource/release.cc:
2624         Likewise.
2625         * testsuite/21_strings/basic_string/types/pmr_typedefs.cc:
2626         Likewise.
2627         * testsuite/23_containers/deque/types/pmr_typedefs.cc: Likewise.
2628         * testsuite/23_containers/deque/types/pmr_typedefs_debug.cc:
2629         Likewise.
2630         * testsuite/23_containers/forward_list/pmr_typedefs.cc:
2631         Likewise.
2632         * testsuite/23_containers/forward_list/pmr_typedefs_debug.cc:
2633         Likewise.
2634         * testsuite/23_containers/list/pmr_typedefs.cc: Likewise.
2635         * testsuite/23_containers/list/pmr_typedefs_debug.cc: Likewise.
2636         * testsuite/23_containers/map/pmr_typedefs.cc: Likewise.
2637         * testsuite/23_containers/map/pmr_typedefs_debug.cc: Likewise.
2638         * testsuite/23_containers/multimap/pmr_typedefs.cc: Likewise.
2639         * testsuite/23_containers/multimap/pmr_typedefs_debug.cc:
2640         Likewise.
2641         * testsuite/23_containers/multiset/pmr_typedefs.cc: Likewise.
2642         * testsuite/23_containers/multiset/pmr_typedefs_debug.cc:
2643         Likewise.
2644         * testsuite/23_containers/set/pmr_typedefs.cc: Likewise.
2645         * testsuite/23_containers/set/pmr_typedefs_debug.cc: Likewise.
2646         * testsuite/23_containers/unordered_map/pmr_typedefs.cc:
2647         Likewise.
2648         * testsuite/23_containers/unordered_map/pmr_typedefs_debug.cc:
2649         Likewise.
2650         * testsuite/23_containers/unordered_multimap/pmr_typedefs.cc:
2651         Likewise.
2652         * testsuite/23_containers/unordered_multimap/pmr_typedefs_debug.cc:
2653         Likewise.
2654         * testsuite/23_containers/unordered_multiset/pmr_typedefs.cc:
2655         Likewise.
2656         * testsuite/23_containers/unordered_multiset/pmr_typedefs_debug.cc:
2657         Likewise.
2658         * testsuite/23_containers/unordered_set/pmr_typedefs.cc:
2659         Likewise.
2660         * testsuite/23_containers/unordered_set/pmr_typedefs_debug.cc:
2661         Likewise.
2662         * testsuite/23_containers/vector/pmr_typedefs.cc: Likewise.
2663         * testsuite/23_containers/vector/types/pmr_typedefs_debug.cc:
2664         Likewise.
2665         * testsuite/28_regex/match_results/pmr_typedefs.cc: Likewise.
2666
2667 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
2668
2669         * testsuite/29_atomics/atomic/69769.cc: Remove -std=gnu++17 from
2670         dg-options.
2671         * testsuite/29_atomics/atomic/is_always_lock_free.cc:
2672         * testsuite/29_atomics/atomic/requirements/typedefs.cc:
2673         * testsuite/29_atomics/atomic_integral/is_always_lock_free.cc:
2674         * testsuite/29_atomics/atomic_integral/requirements/typedefs.cc:
2675         * testsuite/30_threads/lock_guard/cons/deduction.cc: Likewise.
2676         * testsuite/30_threads/scoped_lock/cons/1.cc: Likewise.
2677         * testsuite/30_threads/scoped_lock/cons/deduction.cc: Likewise.
2678         * testsuite/30_threads/scoped_lock/requirements/explicit_instantiation.cc:
2679         Likewise.
2680         * testsuite/30_threads/scoped_lock/requirements/typedefs.cc:
2681         Likewise.
2682         * testsuite/30_threads/shared_lock/70766.cc: Likewise.
2683         * testsuite/30_threads/shared_mutex/cons/1.cc: Likewise.
2684         * testsuite/30_threads/shared_mutex/cons/assign_neg.cc:
2685         Likewise.
2686         * testsuite/30_threads/shared_mutex/cons/copy_neg.cc: Likewise.
2687         * testsuite/30_threads/shared_mutex/requirements/standard_layout.cc:
2688         Likewise.
2689         * testsuite/30_threads/shared_mutex/try_lock/1.cc: Likewise.
2690         * testsuite/30_threads/shared_mutex/try_lock/2.cc: Likewise.
2691         * testsuite/30_threads/shared_mutex/unlock/1.cc: Likewise.
2692         * testsuite/30_threads/unique_lock/cons/deduction.cc: Likewise.
2693
2694 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
2695
2696         * testsuite/20_util/any/assign/1.cc: Remove -std=gnu++17 from
2697         dg-options directive.
2698         * testsuite/20_util/any/assign/2.cc: Likewise.
2699         * testsuite/20_util/any/assign/emplace.cc: Likewise.
2700         * testsuite/20_util/any/assign/exception.cc: Likewise.
2701         * testsuite/20_util/any/assign/self.cc: Likewise.
2702         * testsuite/20_util/any/cons/1.cc: Likewise.
2703         * testsuite/20_util/any/cons/2.cc: Likewise.
2704         * testsuite/20_util/any/cons/90415.cc: Likewise.
2705         * testsuite/20_util/any/cons/92156.cc: Likewise.
2706         * testsuite/20_util/any/cons/aligned.cc: Likewise.
2707         * testsuite/20_util/any/cons/explicit.cc: Likewise.
2708         * testsuite/20_util/any/cons/in_place.cc: Likewise.
2709         * testsuite/20_util/any/cons/nontrivial.cc: Likewise.
2710         * testsuite/20_util/any/make_any.cc: Likewise.
2711         * testsuite/20_util/any/misc/any_cast.cc: Likewise.
2712         * testsuite/20_util/any/misc/any_cast_neg.cc: Likewise.
2713         * testsuite/20_util/any/misc/any_cast_no_rtti.cc: Likewise.
2714         * testsuite/20_util/any/misc/swap.cc: Likewise.
2715         * testsuite/20_util/any/modifiers/1.cc: Likewise.
2716         * testsuite/20_util/any/modifiers/83658.cc: Likewise.
2717         * testsuite/20_util/any/modifiers/92156.cc: Likewise.
2718         * testsuite/20_util/any/observers/type.cc: Likewise.
2719         * testsuite/20_util/any/requirements.cc: Likewise.
2720         * testsuite/20_util/any/typedefs.cc: Likewise.
2721         * testsuite/20_util/optional/77288.cc: Likewise.
2722         * testsuite/20_util/optional/84601.cc: Likewise.
2723         * testsuite/20_util/optional/assignment/1.cc: Likewise.
2724         * testsuite/20_util/optional/assignment/2.cc: Likewise.
2725         * testsuite/20_util/optional/assignment/3.cc: Likewise.
2726         * testsuite/20_util/optional/assignment/4.cc: Likewise.
2727         * testsuite/20_util/optional/assignment/5.cc: Likewise.
2728         * testsuite/20_util/optional/assignment/6.cc: Likewise.
2729         * testsuite/20_util/optional/assignment/7.cc: Likewise.
2730         * testsuite/20_util/optional/assignment/8.cc: Likewise.
2731         * testsuite/20_util/optional/assignment/9.cc: Likewise.
2732         * testsuite/20_util/optional/bad_access.cc: Likewise.
2733         * testsuite/20_util/optional/cons/77727.cc: Likewise.
2734         * testsuite/20_util/optional/cons/85642.cc: Likewise.
2735         * testsuite/20_util/optional/cons/copy.cc: Likewise.
2736         * testsuite/20_util/optional/cons/deduction.cc: Likewise.
2737         * testsuite/20_util/optional/cons/default.cc: Likewise.
2738         * testsuite/20_util/optional/cons/move.cc: Likewise.
2739         * testsuite/20_util/optional/cons/trivial.cc: Likewise.
2740         * testsuite/20_util/optional/cons/value.cc: Likewise.
2741         * testsuite/20_util/optional/cons/value_neg.cc: Likewise.
2742         * testsuite/20_util/optional/constexpr/cons/default.cc:
2743         Likewise.
2744         * testsuite/20_util/optional/constexpr/cons/value.cc: Likewise.
2745         * testsuite/20_util/optional/constexpr/in_place.cc: Likewise.
2746         * testsuite/20_util/optional/constexpr/make_optional.cc:
2747         Likewise.
2748         * testsuite/20_util/optional/constexpr/nullopt.cc: Likewise.
2749         * testsuite/20_util/optional/constexpr/observers/1.cc: Likewise.
2750         * testsuite/20_util/optional/constexpr/observers/2.cc: Likewise.
2751         * testsuite/20_util/optional/constexpr/observers/3.cc: Likewise.
2752         * testsuite/20_util/optional/constexpr/observers/4.cc: Likewise.
2753         * testsuite/20_util/optional/constexpr/observers/5.cc: Likewise.
2754         * testsuite/20_util/optional/constexpr/relops/1.cc: Likewise.
2755         * testsuite/20_util/optional/constexpr/relops/2.cc: Likewise.
2756         * testsuite/20_util/optional/constexpr/relops/3.cc: Likewise.
2757         * testsuite/20_util/optional/constexpr/relops/4.cc: Likewise.
2758         * testsuite/20_util/optional/constexpr/relops/5.cc: Likewise.
2759         * testsuite/20_util/optional/constexpr/relops/6.cc: Likewise.
2760         * testsuite/20_util/optional/hash.cc: Likewise.
2761         * testsuite/20_util/optional/in_place.cc: Likewise.
2762         * testsuite/20_util/optional/make_optional.cc: Likewise.
2763         * testsuite/20_util/optional/nullopt.cc: Likewise.
2764         * testsuite/20_util/optional/observers/1.cc: Likewise.
2765         * testsuite/20_util/optional/observers/2.cc: Likewise.
2766         * testsuite/20_util/optional/observers/3.cc: Likewise.
2767         * testsuite/20_util/optional/observers/4.cc: Likewise.
2768         * testsuite/20_util/optional/observers/5.cc: Likewise.
2769         * testsuite/20_util/optional/observers/6.cc: Likewise.
2770         * testsuite/20_util/optional/relops/1.cc: Likewise.
2771         * testsuite/20_util/optional/relops/2.cc: Likewise.
2772         * testsuite/20_util/optional/relops/3.cc: Likewise.
2773         * testsuite/20_util/optional/relops/4.cc: Likewise.
2774         * testsuite/20_util/optional/relops/5.cc: Likewise.
2775         * testsuite/20_util/optional/relops/6.cc: Likewise.
2776         * testsuite/20_util/optional/relops/7.cc: Likewise.
2777         * testsuite/20_util/optional/requirements.cc: Likewise.
2778         * testsuite/20_util/optional/swap/1.cc: Likewise.
2779         * testsuite/20_util/optional/swap/2.cc: Likewise.
2780         * testsuite/20_util/optional/typedefs.cc: Likewise.
2781         * testsuite/20_util/variant/80165.cc: Likewise.
2782         * testsuite/20_util/variant/85183.cc: Likewise.
2783         * testsuite/20_util/variant/86874.cc: Likewise.
2784         * testsuite/20_util/variant/87431.cc: Likewise.
2785         * testsuite/20_util/variant/87619.cc: Likewise.
2786         * testsuite/20_util/variant/91807.cc: Likewise.
2787         * testsuite/20_util/variant/any.cc: Likewise.
2788         * testsuite/20_util/variant/compile.cc: Likewise.
2789         * testsuite/20_util/variant/deduction.cc: Likewise.
2790         * testsuite/20_util/variant/exception_safety.cc: Likewise.
2791         * testsuite/20_util/variant/hash.cc: Likewise.
2792         * testsuite/20_util/variant/index_type.cc: Likewise.
2793         * testsuite/20_util/variant/relops/89851.cc: Likewise.
2794         * testsuite/20_util/variant/relops/90008.cc: Likewise.
2795         * testsuite/20_util/variant/run.cc: Likewise.
2796         * testsuite/20_util/variant/visit.cc: Likewise.
2797
2798 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
2799
2800         * testsuite/27_io/basic_filebuf/open/char/path.cc: Remove
2801         -std=gnu++17 from dg-options directive.
2802         * testsuite/27_io/basic_fstream/cons/char/path.cc: Likewise.
2803         * testsuite/27_io/basic_fstream/open/char/path.cc: Likewise.
2804         * testsuite/27_io/basic_ifstream/cons/char/path.cc: Likewise.
2805         * testsuite/27_io/basic_ifstream/open/char/path.cc: Likewise.
2806         * testsuite/27_io/basic_ofstream/cons/char/path.cc: Likewise.
2807         * testsuite/27_io/basic_ofstream/open/char/path.cc: Likewise.
2808         * testsuite/27_io/filesystem/directory_entry/86597.cc: Likewise.
2809         * testsuite/27_io/filesystem/directory_entry/lwg3171.cc:
2810         Likewise.
2811         * testsuite/27_io/filesystem/file_status/1.cc: Likewise.
2812         * testsuite/27_io/filesystem/filesystem_error/cons.cc: Likewise.
2813         * testsuite/27_io/filesystem/filesystem_error/copy.cc: Likewise.
2814         * testsuite/27_io/filesystem/iterators/91067.cc: Likewise.
2815         * testsuite/27_io/filesystem/iterators/caching.cc: Likewise.
2816         * testsuite/27_io/filesystem/iterators/directory_iterator.cc:
2817         Likewise.
2818         * testsuite/27_io/filesystem/iterators/pop.cc: Likewise.
2819         * testsuite/27_io/filesystem/iterators/recursion_pending.cc:
2820         Likewise.
2821         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
2822         Likewise.
2823         * testsuite/27_io/filesystem/operations/absolute.cc: Likewise.
2824         * testsuite/27_io/filesystem/operations/all.cc: Likewise.
2825         * testsuite/27_io/filesystem/operations/canonical.cc: Likewise.
2826         * testsuite/27_io/filesystem/operations/copy.cc: Likewise.
2827         * testsuite/27_io/filesystem/operations/copy_file.cc: Likewise.
2828         * testsuite/27_io/filesystem/operations/create_directories.cc:
2829         Likewise.
2830         * testsuite/27_io/filesystem/operations/create_directory.cc:
2831         Likewise.
2832         * testsuite/27_io/filesystem/operations/create_symlink.cc:
2833         Likewise.
2834         * testsuite/27_io/filesystem/operations/current_path.cc:
2835         Likewise.
2836         * testsuite/27_io/filesystem/operations/equivalent.cc: Likewise.
2837         * testsuite/27_io/filesystem/operations/exists.cc: Likewise.
2838         * testsuite/27_io/filesystem/operations/file_size.cc: Likewise.
2839         * testsuite/27_io/filesystem/operations/is_empty.cc: Likewise.
2840         * testsuite/27_io/filesystem/operations/last_write_time.cc:
2841         Likewise.
2842         * testsuite/27_io/filesystem/operations/permissions.cc:
2843         Likewise.
2844         * testsuite/27_io/filesystem/operations/proximate.cc: Likewise.
2845         * testsuite/27_io/filesystem/operations/read_symlink.cc:
2846         Likewise.
2847         * testsuite/27_io/filesystem/operations/relative.cc: Likewise.
2848         * testsuite/27_io/filesystem/operations/remove.cc: Likewise.
2849         * testsuite/27_io/filesystem/operations/remove_all.cc: Likewise.
2850         * testsuite/27_io/filesystem/operations/rename.cc: Likewise.
2851         * testsuite/27_io/filesystem/operations/resize_file.cc:
2852         Likewise.
2853         * testsuite/27_io/filesystem/operations/space.cc: Likewise.
2854         * testsuite/27_io/filesystem/operations/status.cc: Likewise.
2855         * testsuite/27_io/filesystem/operations/symlink_status.cc:
2856         Likewise.
2857         * testsuite/27_io/filesystem/operations/temp_directory_path.cc:
2858         Likewise.
2859         * testsuite/27_io/filesystem/operations/weakly_canonical.cc:
2860         Likewise.
2861         * testsuite/27_io/filesystem/path/append/path.cc: Likewise.
2862         * testsuite/27_io/filesystem/path/append/source.cc: Likewise.
2863         * testsuite/27_io/filesystem/path/assign/assign.cc: Likewise.
2864         * testsuite/27_io/filesystem/path/assign/copy.cc: Likewise.
2865         * testsuite/27_io/filesystem/path/compare/compare.cc: Likewise.
2866         * testsuite/27_io/filesystem/path/compare/lwg2936.cc: Likewise.
2867         * testsuite/27_io/filesystem/path/compare/path.cc: Likewise.
2868         * testsuite/27_io/filesystem/path/compare/strings.cc: Likewise.
2869         * testsuite/27_io/filesystem/path/concat/92853.cc: Likewise.
2870         * testsuite/27_io/filesystem/path/concat/94063.cc: Likewise.
2871         * testsuite/27_io/filesystem/path/concat/path.cc: Likewise.
2872         * testsuite/27_io/filesystem/path/concat/strings.cc: Likewise.
2873         * testsuite/27_io/filesystem/path/construct/80762.cc: Likewise.
2874         * testsuite/27_io/filesystem/path/construct/90281.cc: Likewise.
2875         * testsuite/27_io/filesystem/path/construct/90634.cc: Likewise.
2876         * testsuite/27_io/filesystem/path/construct/copy.cc: Likewise.
2877         * testsuite/27_io/filesystem/path/construct/default.cc:
2878         Likewise.
2879         * testsuite/27_io/filesystem/path/construct/format.cc: Likewise.
2880         * testsuite/27_io/filesystem/path/construct/locale.cc: Likewise.
2881         * testsuite/27_io/filesystem/path/construct/range.cc: Likewise.
2882         * testsuite/27_io/filesystem/path/construct/string_view.cc:
2883         Likewise.
2884         * testsuite/27_io/filesystem/path/decompose/extension.cc:
2885         Likewise.
2886         * testsuite/27_io/filesystem/path/decompose/filename.cc:
2887         Likewise.
2888         * testsuite/27_io/filesystem/path/decompose/parent_path.cc:
2889         Likewise.
2890         * testsuite/27_io/filesystem/path/decompose/relative_path.cc:
2891         Likewise.
2892         * testsuite/27_io/filesystem/path/decompose/root_directory.cc:
2893         Likewise.
2894         * testsuite/27_io/filesystem/path/decompose/root_name.cc:
2895         Likewise.
2896         * testsuite/27_io/filesystem/path/decompose/root_path.cc:
2897         Likewise.
2898         * testsuite/27_io/filesystem/path/decompose/stem.cc: Likewise.
2899         * testsuite/27_io/filesystem/path/factory/u8path-char8_t.cc:
2900         Likewise.
2901         * testsuite/27_io/filesystem/path/factory/u8path.cc: Likewise.
2902         * testsuite/27_io/filesystem/path/generation/normal.cc:
2903         Likewise.
2904         * testsuite/27_io/filesystem/path/generation/normal2.cc:
2905         Likewise.
2906         * testsuite/27_io/filesystem/path/generation/proximate.cc:
2907         Likewise.
2908         * testsuite/27_io/filesystem/path/generation/relative.cc:
2909         Likewise.
2910         * testsuite/27_io/filesystem/path/generic/94242.cc: Likewise.
2911         * testsuite/27_io/filesystem/path/generic/generic_string.cc:
2912         Likewise.
2913         * testsuite/27_io/filesystem/path/generic/utf.cc: Likewise.
2914         * testsuite/27_io/filesystem/path/generic/wchar_t.cc: Likewise.
2915         * testsuite/27_io/filesystem/path/io/dr2989.cc: Likewise.
2916         * testsuite/27_io/filesystem/path/itr/components.cc: Likewise.
2917         * testsuite/27_io/filesystem/path/itr/traversal.cc: Likewise.
2918         * testsuite/27_io/filesystem/path/modifiers/clear.cc: Likewise.
2919         * testsuite/27_io/filesystem/path/modifiers/make_preferred.cc:
2920         Likewise.
2921         * testsuite/27_io/filesystem/path/modifiers/remove_filename.cc:
2922         Likewise.
2923         * testsuite/27_io/filesystem/path/modifiers/replace_extension.cc:
2924         Likewise.
2925         * testsuite/27_io/filesystem/path/modifiers/replace_filename.cc:
2926         Likewise.
2927         * testsuite/27_io/filesystem/path/modifiers/swap.cc: Likewise.
2928         * testsuite/27_io/filesystem/path/native/alloc.cc: Likewise.
2929         * testsuite/27_io/filesystem/path/native/string-char8_t.cc:
2930         Likewise.
2931         * testsuite/27_io/filesystem/path/native/string.cc: Likewise.
2932         * testsuite/27_io/filesystem/path/nonmember/append.cc: Likewise.
2933         * testsuite/27_io/filesystem/path/nonmember/cmp.cc: Likewise.
2934         * testsuite/27_io/filesystem/path/nonmember/hash_value.cc:
2935         Likewise.
2936         * testsuite/27_io/filesystem/path/query/empty.cc: Likewise.
2937         * testsuite/27_io/filesystem/path/query/empty_neg.cc:
2938         * testsuite/27_io/filesystem/path/query/has_extension.cc:
2939         Likewise.
2940         * testsuite/27_io/filesystem/path/query/has_filename.cc:
2941         Likewise.
2942         * testsuite/27_io/filesystem/path/query/has_parent_path.cc:
2943         Likewise.
2944         * testsuite/27_io/filesystem/path/query/has_relative_path.cc:
2945         Likewise.
2946         * testsuite/27_io/filesystem/path/query/has_root_directory.cc:
2947         Likewise.
2948         * testsuite/27_io/filesystem/path/query/has_root_name.cc:
2949         Likewise.
2950         * testsuite/27_io/filesystem/path/query/has_root_path.cc:
2951         Likewise.
2952         * testsuite/27_io/filesystem/path/query/has_stem.cc: Likewise.
2953         * testsuite/27_io/filesystem/path/query/is_absolute.cc:
2954         Likewise.
2955         * testsuite/27_io/filesystem/path/query/is_relative.cc:
2956         Likewise.
2957         * testsuite/experimental/filesystem/path/construct/string_view.cc:
2958         Likewise.
2959
2960 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
2961
2962         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc:
2963         Remove -std=gnu++17 from dg-options.
2964         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc:
2965         Likewise.
2966         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_fill_destroy.cc:
2967         Likewise.
2968         * testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc:
2969         Likewise.
2970         * testsuite/25_algorithms/pstl/alg_merge/merge.cc: Likewise.
2971         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc:
2972         Likewise.
2973         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc:
2974         Likewise.
2975         * testsuite/25_algorithms/pstl/alg_modifying_operations/fill.cc:
2976         Likewise.
2977         * testsuite/25_algorithms/pstl/alg_modifying_operations/generate.cc:
2978         Likewise.
2979         * testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc:
2980         Likewise.
2981         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc:
2982         Likewise.
2983         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc:
2984         Likewise.
2985         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc:
2986         Likewise.
2987         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove_copy.cc:
2988         Likewise.
2989         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace.cc:
2990         Likewise.
2991         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc:
2992         Likewise.
2993         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc:
2994         Likewise.
2995         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc:
2996         Likewise.
2997         * testsuite/25_algorithms/pstl/alg_modifying_operations/swap_ranges.cc:
2998         Likewise.
2999         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_binary.cc:
3000         Likewise.
3001         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_unary.cc:
3002         Likewise.
3003         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc:
3004         Likewise.
3005         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc:
3006         Likewise.
3007         * testsuite/25_algorithms/pstl/alg_nonmodifying/adjacent_find.cc:
3008         Likewise.
3009         * testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc:
3010         Likewise.
3011         * testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc:
3012         Likewise.
3013         * testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc:
3014         Likewise.
3015         * testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc:
3016         Likewise.
3017         * testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc:
3018         Likewise.
3019         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc:
3020         Likewise.
3021         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc:
3022         Likewise.
3023         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc:
3024         Likewise.
3025         * testsuite/25_algorithms/pstl/alg_nonmodifying/for_each.cc:
3026         Likewise.
3027         * testsuite/25_algorithms/pstl/alg_nonmodifying/mismatch.cc:
3028         Likewise.
3029         * testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc:
3030         Likewise.
3031         * testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc:
3032         Likewise.
3033         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc:
3034         Likewise.
3035         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc:
3036         Likewise.
3037         * testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc:
3038         Likewise.
3039         * testsuite/25_algorithms/pstl/alg_sorting/includes.cc:
3040         Likewise.
3041         * testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: Likewise.
3042         * testsuite/25_algorithms/pstl/alg_sorting/is_sorted.cc:
3043         Likewise.
3044         * testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc:
3045         Likewise.
3046         * testsuite/25_algorithms/pstl/alg_sorting/minmax_element.cc:
3047         Likewise.
3048         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc:
3049         Likewise.
3050         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc:
3051         Likewise.
3052         * testsuite/25_algorithms/pstl/alg_sorting/set.cc: Likewise.
3053         * testsuite/25_algorithms/pstl/alg_sorting/sort.cc: Likewise.
3054         * testsuite/25_algorithms/pstl/feature_test-2.cc: Likewise.
3055         * testsuite/25_algorithms/pstl/feature_test-3.cc: Likewise.
3056         * testsuite/25_algorithms/pstl/feature_test-4.cc: Likewise.
3057         * testsuite/25_algorithms/pstl/feature_test-5.cc: Likewise.
3058         * testsuite/25_algorithms/pstl/feature_test.cc: Likewise.
3059         * testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc:
3060         Likewise.
3061         * testsuite/26_numerics/pstl/numeric_ops/reduce.cc: Likewise.
3062         * testsuite/26_numerics/pstl/numeric_ops/scan.cc: Likewise.
3063         * testsuite/26_numerics/pstl/numeric_ops/transform_reduce.cc:
3064         Likewise.
3065         * testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc:
3066         Likewise.
3067
3068 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
3069
3070         * testsuite/20_util/scoped_allocator/69293_neg.cc: Add dg-error
3071         for additional errors in C++20.
3072         * testsuite/20_util/specialized_algorithms/memory_management_tools/destroy_neg.cc:
3073         Likewise.
3074         * testsuite/20_util/uses_allocator/69293_neg.cc: Likewise.
3075         * testsuite/27_io/filesystem/path/io/dr2989.cc: Likewise.
3076
3077 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
3078
3079         * testsuite/20_util/variant/compile.cc: Rename 'any' to avoid
3080         clash with std::any.
3081
3082 2021-05-07  Jonathan Wakely  <jwakely@redhat.com>
3083
3084         * include/std/istream (__rvalue_stream_extraction_t): Replace
3085         use of __rval_streamable.
3086         * include/std/ostream (__rvalue_stream_insertion_t): Likewise.
3087         (__rval_streamable): Remove.
3088         (_Require_derived_from_ios_base, __derived_from_ios_base): New
3089         helper for checking constraints.
3090         * testsuite/27_io/basic_istream/extractors_other/char/4.cc: Fix
3091         reference to the wrong subclause of the standard.
3092         * testsuite/27_io/basic_istream/extractors_other/wchar_t/4.cc:
3093         Likewise.
3094         * testsuite/27_io/basic_ostream/inserters_other/char/6.cc:
3095         Likewise.
3096         * testsuite/27_io/basic_ostream/inserters_other/wchar_t/6.cc:
3097         Likewise.
3098         * testsuite/27_io/basic_ostream/inserters_other/char/99692.cc:
3099         New test.
3100         * testsuite/27_io/filesystem/path/io/dr2989.cc: Adjust pruned
3101         errors.
3102
3103 2021-05-06  Jonathan Wakely  <jwakely@redhat.com>
3104
3105         * include/bits/stl_algobase.h (__copy_move, __copy_move_backward):
3106         Improve static_assert messages.
3107         * testsuite/25_algorithms/copy/58982.cc: Adjust expected output.
3108         * testsuite/25_algorithms/copy_n/58982.cc: Likewise.
3109
3110 2021-05-06  Patrick Palka  <ppalka@redhat.com>
3111
3112         * include/std/ranges (filter_view::_Iterator::base): Make the
3113         const& overload unconstrained and return a const reference as
3114         per LWG 3533.  Make unconditionally noexcept.
3115         (transform_view::_Iterator::base): Likewise.
3116         (elements_view::_Iterator::base): Likewise.
3117
3118 2021-05-06  Patrick Palka  <ppalka@redhat.com>
3119
3120         * include/bits/stl_iterator.h (move_iterator::base): Make the
3121         const& overload unconstrained and return a const reference as
3122         per LWG 3391.  Make unconditionally noexcept.
3123         (counted_iterator::base): Likewise.
3124         * testsuite/24_iterators/move_iterator/lwg3391.cc: New test.
3125         * testsuite/24_iterators/move_iterator/move_only.cc: Adjust
3126         has_member_base concept to decay-copy the result of base().
3127
3128 2021-05-06  Jonathan Wakely  <jwakely@redhat.com>
3129
3130         * include/std/type_traits (remove_cvref_t): Define in terms of
3131         remove_cvref.
3132         * testsuite/20_util/remove_cvref/value.cc: Check alias.
3133
3134 2021-05-06  Jonathan Wakely  <jwakely@redhat.com>
3135
3136         Revert:
3137         2021-05-05  Jonathan Wakely  <jwakely@redhat.com>
3138
3139         * include/std/charconv (__from_chars_alnum): Pass unsigned
3140         char to std::isdigit.
3141
3142 2021-05-05  Patrick Palka  <ppalka@redhat.com>
3143
3144         * include/bits/ranges_util.h (enable_borrowed_range<subrange>):
3145         Remove constraints on this partial specialization.
3146         * include/std/ranges (enable_borrowed_range<iota_view>):
3147         Likewise.
3148
3149 2021-05-05  Patrick Palka  <ppalka@redhat.com>
3150
3151         * include/std/ranges (transform_view::_Iterator::iter_swap):
3152         Remove as per LWG 3520.
3153         (join_view::_Iterator::iter_swap): Add indirectly_swappable
3154         constraint as per LWG 3517.
3155
3156 2021-05-05  Jonathan Wakely  <jwakely@redhat.com>
3157
3158         * testsuite/20_util/function_objects/invoke/3.cc: Check feature
3159         test macro.
3160         * testsuite/20_util/function_objects/invoke/version.cc: New test.
3161
3162 2021-05-05  Jonathan Wakely  <jwakely@redhat.com>
3163
3164         * include/std/charconv (__from_chars_alnum): Pass unsigned
3165         char to std::isdigit.
3166
3167 2021-05-05  Corentin Gay  <gay@adacore.com>
3168
3169         * acinclude.m4: Add VxWorks-specific case for the
3170         configuration of ctypes.
3171         * configure: Regenerate.
3172         * config/locale/vxworks/ctype_members.cc: Add VxWorks-specific
3173         version.
3174         * config/os/vxworks/ctype_base.h: Adjust for VxWorks7+.
3175         * config/os/vxworks/ctype_configure_char.cc: Likewise.
3176         * config/os/vxworks/ctype_inline.h: Likewise.
3177         * testsuite/28_regex/traits/char/isctype.cc: Defines
3178         NEWLINE_IN_CLASS_BLANK if the target is VxWorks.
3179         * testsuite/28_regex/traits/wchar_t/isctype.cc: Likewise.
3180
3181 2021-05-04  Jonathan Wakely  <jwakely@redhat.com>
3182
3183         * include/std/future (promise::set_value): Check for existence
3184         of shared state before dereferncing it.
3185         (promise::set_exception, promise::set_value_at_thread_exit)
3186         (promise::set_exception_at_thread_exit): Likewise.
3187         (promise<R&>::set_value, promise<R&>::set_exception)
3188         (promise<R&>::set_value_at_thread_exit)
3189         (promise<R&>::set_exception_at_thread_exit): Likewise.
3190         (promise<void>::set_value, promise<void>::set_exception)
3191         (promise<void>::set_value_at_thread_exit)
3192         (promise<void>::set_exception_at_thread_exit): Likewise.
3193         * testsuite/30_threads/promise/members/at_thread_exit2.cc:
3194         Remove unused variable.
3195
3196 2021-05-04  Jonathan Wakely  <jwakely@redhat.com>
3197
3198         * include/bits/basic_string.h (basic_string(const CharT*, const A&)):
3199         Do not do arithmetic on null pointer.
3200
3201 2021-05-04  Jonathan Wakely  <jwakely@redhat.com>
3202
3203         * include/ext/pb_ds/detail/cc_hash_table_map_/cc_ht_map_.hpp
3204         (find_key_pointer(key_const_reference, false_type))
3205         (find_key_pointer(key_const_reference, true_type)): Do not
3206         dereference null pointer.
3207
3208 2021-05-04  Jonathan Wakely  <jwakely@redhat.com>
3209
3210         * testsuite/20_util/from_chars/3.cc: Use unsigned type to avoid
3211         overflow.
3212         * testsuite/24_iterators/reverse_iterator/2.cc: Do not add
3213         non-zero value to null pointer.
3214         * testsuite/25_algorithms/copy_backward/move_iterators/69478.cc:
3215         Use past-the-end iterator for result.
3216         * testsuite/25_algorithms/move_backward/69478.cc: Likewise.
3217         * testsuite/25_algorithms/move_backward/93872.cc: Likewise.
3218
3219 2021-05-04  Jonathan Wakely  <jwakely@redhat.com>
3220
3221         PR libstdc++/100384
3222         * include/std/variant (__get_t): New alias template yielding the
3223         return type of std::get<N> on a variant.
3224         (__visit_result_t): New alias template yielding the result of
3225         std::visit.
3226         (__same_types): Move into namespace __detail::__variant.
3227         (__check_visitor_results): Likewise. Use __invoke_result_t and
3228         __get_t.
3229         (__check_visitor_result): Remove.
3230         (visit): Use __visit_result_t for return type.
3231         * testsuite/20_util/variant/100384.cc: New test.
3232
3233 2021-05-04  Jonathan Wakely  <jwakely@redhat.com>
3234
3235         * acinclude.m4 (GLIBCXX_ENABLE_INT128_FLOAT128): Remove
3236         checks for __int128 and rename to GLIBCXX_ENABLE_FLOAT128.
3237         * config.h.in: Regenerate.
3238         * configure: Regenerate.
3239         * configure.ac: Adjust to use GLIBCXX_ENABLE_FLOAT128.
3240         * include/bits/random.h (_Select_uint_least_t<s, 1>):
3241         Use __SIZEOF_INT128__ to decide whether to use __int128.
3242         * include/std/charconv (__to_chars_unsigned_type): Likewise.
3243
3244 2021-05-03  Gerald Pfeifer  <gerald@pfeifer.com>
3245
3246         * doc/xml/manual/ctype.xml: Move unix.org reference to https.
3247         * doc/html/manual/facets.html: Regenerate.
3248
3249 2021-04-30  Patrick Palka  <ppalka@redhat.com>
3250
3251         * include/std/ranges (__detail::__non_propating_cache): Define
3252         as per P2328.
3253         (join_view): Remove constraints on the value and reference types
3254         of the wrapped iterator type as per P2328.
3255         (join_view::_Iterator::_M_satisfy): Adjust as per P2328.
3256         (join_view::_Iterator::operator++): Likewise.
3257         (join_view::_M_inner): Use __non_propating_cache as per P2328.
3258         Remove now-redundant use of __maybe_present_t.
3259         * testsuite/std/ranges/adaptors/join.cc: Include <array>.
3260         (test10): New test.
3261
3262 2021-04-30  Jonathan Wakely  <jwakely@redhat.com>
3263
3264         * include/bits/basic_string.h (__cpp_lib_constexpr_string):
3265         Only define for C++17 and later.
3266         * include/std/version (__cpp_lib_semaphore): Fix condition
3267         to match the one in <semaphore>.
3268
3269 2021-04-30  Jonathan Wakely  <jwakely@redhat.com>
3270
3271         * acinclude.m4 (GLIBCXX_CHECK_INT64_T): Delete.
3272         * config.h.in: Regenerate.
3273         * configure: Regenerate.
3274         * configure.ac: Do not use GLIBCXX_CHECK_INT64_T.
3275         * include/bits/postypes.h: Remove include of <stdint.h> and
3276         definition/undefinition of the __STDC_LIMIT_MACROS and
3277         __STDC_CONSTANT_MACROS macros.
3278         (streamoff): Use __INT64_TYPE__ if defined.
3279
3280 2021-04-30  Patrick Palka  <ppalka@redhat.com>
3281
3282         * include/std/ranges (split_view::_InnerIter::operator++):
3283         Depend on _Base instead of _Vp directly, as per LWG 3532.
3284
3285 2021-04-30  Patrick Palka  <ppalka@redhat.com>
3286
3287         * include/bits/ranges_util.h (subrange::subrange): Avoid
3288         list-initialization in delegating constructor.
3289         * include/std/ranges (single_view): Replace implicit guide
3290         with explicit deduction guide that decays its argument.
3291         (_Single::operator()): Avoid CTAD when constructing the
3292         single_view object.
3293         (_Iota::operator()): Avoid list-initialization.
3294         (__detail::__can_filter_view, _Filter::operator()): Likewise.
3295         (__detail::__can_transform_view, _Transform::operator()): Likewise.
3296         (take_view::begin): Likewise.
3297         (__detail::__can_take_view, _Take::operator()): Likewise.
3298         (__detail::__can_take_while_view, _TakeWhile::operator()): Likewise.
3299         (__detail::__can_drop_view, _Drop::operator()): Likewise.
3300         (__detail::__can_drop_while_view, _DropWhile::operator()): Likewise.
3301         (split_view::split_view): Use views::single when initializing
3302         _M_pattern.
3303         (__detail::__can_split_view, _Split::operator()): Avoid
3304         list-initialization.
3305         (_Counted::operator()): Likewise.
3306         * testsuite/std/ranges/p2367.cc: New test.
3307
3308 2021-04-30  Jonathan Wakely  <jwakely@redhat.com>
3309
3310         PR libstdc++/60497
3311         * include/bits/basic_ios.tcc (basic_ios::copyfmt): use
3312         std::addressof.
3313         * include/bits/basic_string.tcc (basic_string::swap)
3314         (basic_string::assign): Likewise.
3315         * include/bits/deque.tcc (deque::operator=(const deque&)):
3316         Likewise.
3317         * include/bits/stl_tree.h (_Rb_tree::operator=(const * _Rb_tree&)):
3318         Likewise.
3319         * include/bits/vector.tcc (vector::operator=(const vector&)):
3320         Likewise.
3321
3322 2021-04-30  Jonathan Wakely  <jwakely@redhat.com>
3323
3324         * include/std/istream (operator>>(Istream&&, x&)): Simplify, as
3325         per LWG 1203.
3326         * include/std/ostream (operator<<(Ostream&&, const x&)):
3327         Likewise.
3328         * testsuite/27_io/basic_istream/extractors_character/char/lwg2499_neg.cc:
3329         Adjust dg-error pattern.
3330         * testsuite/27_io/basic_istream/extractors_character/wchar_t/lwg2499_neg.cc:
3331         Likewise.
3332         * testsuite/27_io/basic_istream/extractors_other/char/4.cc: Define
3333         is_extractable trait to replace std::__is_extractable. Make it
3334         work with rvalue streams as well as lvalues, to replace f() and
3335         g() helper functions.
3336         * testsuite/27_io/basic_istream/extractors_other/wchar_t/4.cc:
3337         Likewise.
3338         * testsuite/27_io/basic_ostream/inserters_other/char/6.cc:
3339         Define is_insertable trait to replace std::__is_insertable. Make
3340         it work with rvalue streams as well as lvalues, to replace f()
3341         and g() helper functions.
3342         * testsuite/27_io/basic_ostream/inserters_other/wchar_t/6.cc:
3343         Likewise.
3344         * testsuite/27_io/filesystem/path/io/dr2989.cc: Prune additional
3345         errors from new constraints.
3346         * testsuite/27_io/rvalue_streams-2.cc: Remove PR 80675 checks,
3347         which are no longer expected to compile.
3348         * testsuite/27_io/rvalue_streams.cc: Adjust existing test.
3349         Verify LWG 1203 changes.
3350
3351 2021-04-30  Jonathan Wakely  <jwakely@redhat.com>
3352
3353         PR libstdc++/100285
3354         * include/experimental/socket (__basic_socket_impl::set_option)
3355         (__basic_socket_impl::get_option) [!_GLIBCXX_HAVE_SYS_SOCKET_H]:
3356         Just set error code.
3357         * testsuite/experimental/net/socket/socket_base.cc: CHeck
3358         for <sys/socket.h> not <socket.h>.
3359
3360 2021-04-30  Jonathan Wakely  <jwakely@redhat.com>
3361
3362         PR libstdc++/100180
3363         PR libstdc++/100286
3364         PR libstdc++/100351
3365         * testsuite/experimental/net/internet/address/v4/comparisons.cc:
3366         Use new effective-target keyword.
3367         * testsuite/experimental/net/internet/address/v4/cons.cc:
3368         Likewise.
3369         * testsuite/experimental/net/internet/address/v4/creation.cc:
3370         Likewise.
3371         * testsuite/experimental/net/internet/address/v4/members.cc:
3372         Likewise.
3373         * testsuite/experimental/net/internet/address/v6/members.cc:
3374         Likewise.
3375         * testsuite/experimental/net/internet/resolver/base.cc:
3376         Likewise.
3377         * testsuite/experimental/net/internet/resolver/ops/lookup.cc:
3378         Likewise.
3379         * testsuite/experimental/net/internet/resolver/ops/reverse.cc:
3380         Likewise.
3381         * testsuite/experimental/net/internet/socket/opt.cc:
3382         Likewise.
3383         * testsuite/experimental/net/internet/tcp.cc:
3384         Likewise.
3385         * testsuite/experimental/net/internet/udp.cc:
3386         Likewise.
3387         * testsuite/lib/libstdc++.exp (check_effective_target_net_ts_ip):
3388         New proc to check net_ts_ip et.
3389
3390 2021-04-28  Jonathan Wakely  <jwakely@redhat.com>
3391
3392         PR libstdc++/97930
3393         * testsuite/20_util/pair/requirements/structural.cc: New test.
3394
3395 2021-04-28  Jonathan Wakely  <jwakely@redhat.com>
3396
3397         * include/bits/stl_pair.h (pair) [__cplusplus > 202002]: Add
3398         new definitions for constructors and assignment operators using
3399         concepts for constraints.
3400         * testsuite/20_util/pair/cons/99957.cc: Disable for C++20 and
3401         later.
3402         * testsuite/20_util/pair/cons/explicit_construct.cc: Adjust
3403         expected error messages to also match C++20 errors.
3404
3405 2021-04-28  Jonathan Wakely  <jwakely@redhat.com>
3406
3407         PR libstdc++/99957
3408         * include/bits/stl_pair.h (_PCC::_MoveCopyPair, _PCC::_CopyMovePair):
3409         Combine and replace with ...
3410         (_PCC::_DeprConsPair): New SFINAE helper function.
3411         (pair): Merge preprocessor blocks so that all C++03 members
3412         are defined together at the end.
3413         (pair::pair(const _T1&, _U2&&), pair::pair(_U1&&, const _T2&)):
3414         Replace _T1 and _T2 parameters with __null_ptr_constant and
3415         adjust constraints.
3416         * testsuite/20_util/pair/40925.cc: Use nullptr instead of 0.
3417         * testsuite/20_util/pair/cons/explicit_construct.cc: Likewise.
3418         * testsuite/20_util/pair/cons/99957.cc: New test.
3419
3420 2021-04-28  Jonathan Wakely  <jwakely@redhat.com>
3421
3422         * include/bits/basic_string.h (__cpp_lib_constexpr_string): Define.
3423         * include/std/version (__cpp_lib_constexpr_string): Define.
3424         * testsuite/21_strings/char_traits/requirements/constexpr_functions_c++17.cc:
3425         Check for __cpp_lib_constexpr_string.
3426         * testsuite/21_strings/char_traits/requirements/constexpr_functions_c++20.cc:
3427         Likewise.
3428         * testsuite/21_strings/char_traits/requirements/version.cc: New test.
3429
3430 2021-04-28  Jonathan Wakely  <jwakely@redhat.com>
3431
3432         * doc/Makefile.am (stamp-pdf-doxygen): Improve comment about
3433         dealing with errors. Use '@' to prevent shell command being
3434         echoed.
3435         * doc/Makefile.in: Regenerate.
3436
3437 2021-04-28  Jonathan Wakely  <jwakely@redhat.com>
3438
3439         PR libstdc++/100298
3440         * include/bits/std_thread.h (thread::hardware_concurrency): Add
3441         missing noexcept to inline definition for non-gthreads targets.
3442
3443 2021-04-28  Patrick Palka  <ppalka@redhat.com>
3444
3445         PR libstdc++/100187
3446         PR libstdc++/100237
3447         PR libstdc++/100249
3448         PR libstdc++/100287
3449         * include/bits/ranges_algo.h (__search_n_fn::operator()): Give
3450         the __value_comp lambda an explicit bool return type.
3451         (__is_permutation_fn::operator()): Give the __proj_scan local
3452         variable auto&& return type.  Give the __comp_scan lambda an
3453         explicit bool return type.
3454         (__remove_fn::operator()): Give the __pred lambda an explicit
3455         bool return type.
3456         (__partition_fn::operator()): Don't std::move __first twice
3457         when returning an empty subrange.
3458         (__min_fn::operator()): Don't std::move __comp.
3459         (__max_fn::operator()): Likewise.
3460         (__minmax_fn::operator()): Likewise.
3461
3462 2021-04-27  Patrick Palka  <ppalka@redhat.com>
3463
3464         PR libstdc++/100290
3465         * include/std/ranges (join_view::_Iterator::operator++): Correct
3466         the return type of the lambda to avoid returning a copy of
3467         _M_parent->_M_inner.
3468         * testsuite/std/ranges/adaptors/join.cc (test10): New test.
3469
3470 2021-04-27  Jakub Jelinek  <jakub@redhat.com>
3471
3472         Revert:
3473         2021-04-22  Jakub Jelinek  <jakub@redhat.com>
3474
3475         PR target/100182
3476         * testsuite/29_atomics/atomic_float/1.cc: Add dg-xfail-run-if for
3477         ia32.
3478         * testsuite/29_atomics/atomic_float/wait_notify.cc: Add dg-skip-if for
3479         ia32.
3480
3481 2021-04-27  Jonathan Wakely  <jwakely@redhat.com>
3482
3483         * include/experimental/internet (address_v6::bytes_type): Adjust
3484         formatting.
3485         (basic_endpoint): Define _M_is_v6() to put all checks for
3486         AF_INET6 in one place.
3487         (basic_endpoint::resize): Simplify.
3488         (operator==(const tcp&, const tcp&)): Add constexpr and noexcept.
3489         (operator!=(const tcp&, const tcp&)): Likewise.
3490         (operator==(const udp&, const udp&)): Likewise.
3491         (operator!=(const udp&, const udp&)): Likewise.
3492         * testsuite/experimental/net/internet/tcp.cc: New test.
3493         * testsuite/experimental/net/internet/udp.cc: New test.
3494
3495 2021-04-27  Jonathan Wakely  <jwakely@redhat.com>
3496
3497         PR libstdc++/100286
3498         * include/experimental/internet (resolver_errc, resolver_category())
3499         (make_error_code, make_error_condition): Define unconditionally,
3500         only make enumerators and use of gai_strerror depend on the
3501         availability of <netdb.h>.
3502         (address_v4::to_string): Use correct constant for string length.
3503         (address_v4::to_string, address_v6::to_string): Define
3504         unconditionally, throw if unsupported.
3505         (make_address_v4, make_address_v6): Define unconditionally.
3506         Return an error if unsupported.
3507         (tcp, udp, v6_only, unicast::hops, multicast::*): Define
3508         conditionally,
3509         * testsuite/experimental/net/internet/socket/opt.cc: Check for
3510         <netinet/in.h> and <netinet/tcp.h> before using types from
3511         namespace net::ip.
3512
3513 2021-04-27  Jonathan Wakely  <jwakely@redhat.com>
3514
3515         PR libstdc++/100285
3516         * include/experimental/internet (resolver_base::flags):
3517         Define overloaded operators as hidden friends.
3518         * include/experimental/socket (socket_base::message_flags):
3519         Likewise.
3520
3521 2021-04-26  Jonathan Wakely  <jwakely@redhat.com>
3522
3523         * include/experimental/internet (tcp::no_delay, v6_only)
3524         (unicast::hops, multicast::hops, multicast::enable_loopback):
3525         Change access of base class and static data members. Add
3526         using-declaration for __socket_crtp::operator=(_Tp).
3527         (multicast::__mcastopt): New type.
3528         (multicast::join_group, multicast::leave_group): Derive from
3529         __mcastopt for common implementation.
3530         * include/experimental/socket: Add comment.
3531         * testsuite/experimental/net/internet/socket/opt.cc: New test.
3532         * testsuite/experimental/net/socket/socket_base.cc: Check for
3533         protected constructor/destructor of socket_base. Check for
3534         explicit constructors of socket option classes.
3535
3536 2021-04-26  Jonathan Wakely  <jwakely@redhat.com>
3537
3538         * include/experimental/bits/net.h (__socket_base): Add
3539         bool template parameter to allow BooleanSocketOption and
3540         IntegerSocketOption to have different __socket_base<int>
3541         base classes.
3542         (__socket_base<bool>): Adjust base class.
3543         (__socket_base<int>): Add partial specialization.
3544         (__socket_crtp::operator=(_Tp)): Add noexcept-specifier.
3545         * include/experimental/socket (socket_base::broadcast)
3546         (socket_base::debug, socket_base::do_not_route)
3547         (socket_base::keep_alive, socket_base::linger)
3548         (socket_base::out_of_band_inline)
3549         (socket_base::receive_buffer_size)
3550         (socket_base::receive_low_watermark)
3551         (socket_base::reuse_address, socket_base::send_buffer_size)
3552         (socket_base::send_low_watermark): Add using-declaration for
3553         __socket_crtp::operator=(_Tp).
3554         * testsuite/experimental/net/socket/socket_base.cc: Check
3555         properties of socket option types.
3556
3557 2021-04-26  Jonathan Wakely  <jwakely@redhat.com>
3558
3559         * include/experimental/internet (resolver_base::flags): Remove
3560         enumerators. Initialize constants directly with desired values.
3561         Make all operators constexpr and noexcept.
3562         * testsuite/experimental/net/internet/resolver/base.cc: Use
3563         __gnu_test::test_bitmask_values for bitmask type. Check
3564         construction and destruction is protected.
3565
3566 2021-04-26  Jonathan Wakely  <jwakely@redhat.com>
3567
3568         * include/bits/semaphore_base.h: Include <exception> and <errno.h>.
3569
3570 2021-04-26  Jonathan Wakely  <jwakely@redhat.com>
3571
3572         PR libstdc++/100259
3573         * include/experimental/internet (net::ip::make_error_code)
3574         (net::ip::make_error_condition, net::ip::make_network_v4)
3575         (net::ip::operator==(const udp&, const udp&)): Add 'inline'.
3576
3577 2021-04-24  David Edelsohn  <dje.gcc@gmail.com>
3578
3579         * testsuite/lib/dg-options.exp (atomic_link_flags): New.
3580         (add_options_for_libatomic): Use atomic_link_flags.
3581
3582 2021-04-23  Jonathan Wakely  <jwakely@redhat.com>
3583
3584         PR libstdc++/100180
3585         * include/experimental/io_context (io_context): Define
3586         dummy_pollfd type so that most member functions still compile
3587         without <poll.h> and struct pollfd.
3588
3589 2021-04-23  Jonathan Wakely  <jwakely@redhat.com>
3590
3591         * include/experimental/io_context (io_context::async_wait): Add
3592         comment.
3593         * include/experimental/socket (basic_socket::async_connect):
3594         Cast wait_type constant to int.
3595         (basic_datagram_socket::async_receive): Likewise.
3596         (basic_datagram_socket::async_receive_from): Likewise.
3597         (basic_datagram_socket::async_send): Likewise.
3598         (basic_datagram_socket::async_send_to): Likewise.
3599         (basic_stream_socket::async_receive): Likewise.
3600         (basic_stream_socket::async_send): Likewise. Use io_context
3601         parameter directly, instead of via an executor.
3602         (basic_socket_acceptor::async_accept): Likewise.
3603
3604 2021-04-23  Jonathan Wakely  <jwakely@redhat.com>
3605
3606         * include/experimental/socket (socket_base::shutdown_type):
3607         (socket_base::wait_type, socket_base::message_flags):
3608         Remove enumerators. Initialize constants directly with desired
3609         values.
3610         (socket_base::message_flags): Make all operators constexpr and
3611         noexcept.
3612         * testsuite/util/testsuite_common_types.h (test_bitmask_values):
3613         New test utility.
3614         * testsuite/experimental/net/socket/socket_base.cc: New test.
3615
3616 2021-04-22  David Edelsohn  <dje.gcc@gmail.com>
3617
3618         * config/os/aix/atomicity.h: Delete.
3619
3620 2021-04-22  Jonathan Wakely  <jwakely@redhat.com>
3621
3622         * include/bits/atomic_timed_wait.h (__cond_wait_until_impl):
3623         Handle system_clock as well as steady_clock.
3624         * testsuite/30_threads/semaphore/try_acquire_for.cc: Re-enable.
3625         * testsuite/30_threads/semaphore/try_acquire_until.cc:
3626         Re-enable.
3627
3628 2021-04-22  Jonathan Wakely  <jwakely@redhat.com>
3629
3630         * testsuite/30_threads/semaphore/try_acquire_posix.cc: Add
3631         options for libatomic.
3632
3633 2021-04-22  Jonathan Wakely  <jwakely@redhat.com>
3634
3635         * config/os/gnu-linux/os_defines.h: Fix type in comment.
3636
3637 2021-04-22  Jonathan Wakely  <jwakely@redhat.com>
3638
3639         PR libstdc++/99006
3640         * include/bits/shared_ptr.h (allocate_shared): Assert that _Tp
3641         is not an array type.
3642         * include/bits/shared_ptr_base.h (__allocate_shared): Likewise.
3643         * testsuite/20_util/shared_ptr/creation/99006.cc: New test.
3644
3645 2021-04-22  Thomas Rodgers  <rodgert@twrodgers.com>
3646
3647         * include/bits/atomic_wait.h: Always notify waiters in the
3648         case of 'bare' address notification.
3649
3650 2021-04-22  Jakub Jelinek  <jakub@redhat.com>
3651
3652         PR target/100182
3653         * testsuite/29_atomics/atomic_float/1.cc: Add dg-xfail-run-if for
3654         ia32.
3655         * testsuite/29_atomics/atomic_float/wait_notify.cc: Add dg-skip-if for
3656         ia32.
3657
3658 2021-04-22  Jonathan Wakely  <jwakely@redhat.com>
3659
3660         PR libstdc++/100179
3661         * include/bits/semaphore_base.h: Remove #error.
3662         * include/std/semaphore: Do not define anything unless one of
3663         the implementations is available.
3664
3665 2021-04-21  Thomas Rodgers  <rodgert@twrodgers.com>
3666
3667         * include/bits/semaphore_base.h: Always reload __old in
3668         __atomic_semaphore::_S_do_try_acquire().
3669         * testsuite/30_threads/stop_token/stop_callback/destroy.cc:
3670         re-enable testcase.
3671
3672 2021-04-21  Philippe Blain  <levraiphilippeblain@gmail.com>
3673             Jonathan Wakely  <jwakely@redhat.com>
3674
3675         PR libstdc++/99453
3676         * python/Makefile.am: Install libstdc++*-gdb.py more robustly.
3677         * python/Makefile.in: Regenerate.
3678
3679 2021-04-21  Thomas Rodgers  <rodgert@twrodgers.com>
3680
3681         * include/bits/semaphore_base.h: Add missing _M_try_acquire()
3682         member to __platform_wait.
3683
3684 2021-04-21  Jonathan Wakely  <jwakely@redhat.com>
3685
3686         * include/std/latch: Replace tab characters in license text.
3687         * include/std/semaphore: Likewise.
3688
3689 2021-04-21  Jakub Jelinek  <jakub@redhat.com>
3690
3691         PR libstdc++/100164
3692         * acinclude.m4: For POSIX semaphores AC_DEFINE HAVE_POSIX_SEMAPHORE
3693         rather than _GLIBCXX_HAVE_POSIX_SEMAPHORE.
3694         * configure: Regenerated.
3695         * config.h.in: Regenerated.
3696
3697 2021-04-20  Jonathan Wakely  <jwakely@redhat.com>
3698
3699         * testsuite/30_threads/semaphore/try_acquire_for.cc: Disable
3700         test for targets not using futexes for semaphores.
3701         * testsuite/30_threads/semaphore/try_acquire_until.cc: Likewise.
3702         * testsuite/30_threads/stop_token/stop_callback/destroy.cc:
3703         Disable for all targets.
3704
3705 2021-04-20  Thomas Rodgers  <trodgers@redhat.com>
3706
3707         * include/Makefile.am: Add new <bits/this_thread_sleep.h> header.
3708         * include/Makefile.in: Regenerate.
3709         * include/bits/this_thread_sleep.h: New file.
3710         * include/bits/atomic_base.h: Adjust all calls
3711         to __atomic_wait/__atomic_notify for new call signatures.
3712         * include/bits/atomic_timed_wait.h: Extensive rewrite.
3713         * include/bits/atomic_wait.h: Likewise.
3714         * include/bits/semaphore_base.h: Adjust all calls
3715         to __atomic_wait/__atomic_notify for new call signatures.
3716         * include/std/atomic: Likewise.
3717         * include/std/barrier: Likewise.
3718         * include/std/latch: Likewise.
3719         * include/std/semaphore: Likewise.
3720         * include/std/thread (this_thread::sleep_for)
3721         (this_thread::sleep_until): Move to new header.
3722         * testsuite/29_atomics/atomic/wait_notify/bool.cc: Simplify
3723         test.
3724         * testsuite/29_atomics/atomic/wait_notify/generic.cc: Likewise.
3725         * testsuite/29_atomics/atomic/wait_notify/pointers.cc: Likewise.
3726         * testsuite/29_atomics/atomic_flag/wait_notify/1.cc: Likewise.
3727         * testsuite/29_atomics/atomic_float/wait_notify.cc: Likewise.
3728         * testsuite/29_atomics/atomic_integral/wait_notify.cc: Likewise.
3729         * testsuite/29_atomics/atomic_ref/wait_notify.cc: Likewise.
3730
3731 2021-04-20  Patrick Palka  <ppalka@redhat.com>
3732
3733         PR libstdc++/95983
3734         * include/bits/stl_iterator.h (__detail::__move_iter_cat):
3735         Define.
3736         (move_iterator): Derive from the above in C++20 in order to
3737         conditionally define iterator_category as per P2259.
3738         (move_iterator::__base_cat): No longer used, so remove.
3739         (move_iterator::iterator_category): Remove in C++20.
3740         (__detail::__common_iter_use_postfix_proxy): Define.
3741         (common_iterator::_Proxy): Rename to ...
3742         (common_iterator:__arrow_proxy): ... this.
3743         (common_iterator::__postfix_proxy): Define as per P2259.
3744         (common_iterator::operator->): Adjust.
3745         (common_iterator::operator++): Adjust as per P2259.
3746         (iterator_traits<common_iterator>::_S_iter_cat): Define.
3747         (iterator_traits<common_iterator>::iterator_category): Change as
3748         per P2259.
3749         (__detail::__counted_iter_value_type): Define.
3750         (__detail::__counted_iter_concept): Define.
3751         (__detail::__counted_iter_cat): Define.
3752         (counted_iterator): Derive from the above three classes in order
3753         to conditionally define value_type, iterator_concept and
3754         iterator category respectively as per P2259.
3755         (counted_iterator::operator->): Define as per P2259.
3756         (incrementable_traits<counted_iterator>): Remove as per P2259.
3757         (iterator_traits<counted_iterator>): Adjust as per P2259.
3758         * include/std/ranges (__detail::__iota_view_iter_cat): Define.
3759         (iota_view::_Iterator): Derive from the above in order to
3760         conditionally define iterator_category as per P2259.
3761         (iota_view::_S_iter_cat): Rename to ...
3762         (iota_view::_S_iter_concept): ... this.
3763         (iota_view::iterator_concept): Use it to apply LWG 3291 changes.
3764         (iota_view::iterator_category): Remove.
3765         (__detail::__filter_view_iter_cat): Define.
3766         (filter_view::_Iterator): Derive from the above in order to
3767         conditionally define iterator_category as per P2259.
3768         (filter_view::_Iterator): Move to struct __filter_view_iter_cat.
3769         (filter_view::_Iterator::iterator_category): Remove.
3770         (transform_view::_Base): Define.
3771         (transform_view::__iter_cat): Define.
3772         (transform_view::_Iterator): Derive from the above in order to
3773         conditionally define iterator_category as per P2259.
3774         (transform_view::_Iterator::_Base): Just alias
3775         transform_view::_Base.
3776         (transform_view::_Iterator::_S_iter_cat): Move to struct
3777         transform_view::__iter_cat.
3778         (transform_view::_Iterator::iterator_category): Remove.
3779         (transform_view::_Sentinel::_Base): Just alias
3780         transform_view::_Base.
3781         (join_view::_Base): Define.
3782         (join_view::_Outer_iter): Define.
3783         (join_view::_Inner_iter): Define.
3784         (join_view::_S_ref_is_glvalue): Define.
3785         (join_view::__iter_cat): Define.
3786         (join_view::_Iterator): Derive from it in order to conditionally
3787         define iterator_category as per P2259.
3788         (join_view::_Iterator::_Base): Just alias join_view::_Base.
3789         (join_view::_Iterator::_S_ref_is_glvalue): Just alias
3790         join_view::_S_ref_is_glvalue.
3791         (join_view::_Iterator::_S_iter_cat): Move to struct
3792         transform_view::__iter_cat.
3793         (join_view::_Iterator::_Outer_iter): Just alias
3794         join_view::_Outer_iter.
3795         (join_view::_Iterator::_Inner_iter): Just alias
3796         join_view::_Inner_iter.
3797         (join_view::_Iterator::iterator_category): Remove.
3798         (join_view::_Sentinel::_Base): Just alias join_view::_Base.
3799         (__detail::__split_view_outer_iter_cat): Define.
3800         (__detail::__split_view_inner_iter_cat): Define.
3801         (split_view::_Base): Define.
3802         (split_view::_Outer_iter): Derive from __split_view_outer_iter_cat
3803         in order to conditionally define iterator_category as per P2259.
3804         (split_view::_Outer_iter::iterator_category): Remove.
3805         (split_view::_Inner_iter): Derive from __split_view_inner_iter_cat
3806         in order to conditionally define iterator_category as per P2259.
3807         (split_view::_Inner_iter::_S_iter_cat): Move to
3808         __split_view_inner_iter_cat.
3809         (split_view::_Inner_iter::iterator_category): Remove.
3810         (elements_view::_Base): Define.
3811         (elements_view::__iter_cat): Define.
3812         (elements_view::_Iterator): Derive from the above in order to
3813         conditionall define iterator_category as per P2259.
3814         (elements_view::_Iterator::_Base): Just alias
3815         elements_view::_Base.
3816         (elements_view::_Iterator::_S_iter_concept)
3817         (elements_view::_Iterator::iterator_concept): Define as per
3818         P2259.
3819         (elements_view::_Iterator::iterator_category): Remove.
3820         (elements_view::_Sentinel::_Base): Just alias
3821         elements_view::_Base.
3822         * testsuite/24_iterators/headers/iterator/synopsis_c++20.cc:
3823         Adjust constraints on iterator_traits<counted_iterator>.
3824         * testsuite/std/ranges/p2259.cc: New test.
3825
3826 2021-04-20  Jonathan Wakely  <jwakely@redhat.com>
3827
3828         PR libstdc++/100146
3829         * include/std/charconv (__cpp_lib_to_chars): Define
3830         conditionally.
3831         * include/std/version (__cpp_lib_to_chars): Likewise..
3832         * testsuite/20_util/from_chars/4.cc: Only check feature test
3833         macro, not _GLIBCXX_HAVE_USELOCALE.
3834         * testsuite/20_util/from_chars/5.cc: Likewise.
3835         * testsuite/20_util/from_chars/6.cc: Likewise.
3836         * testsuite/20_util/to_chars/long_double.cc: Likewise.
3837
3838 2021-04-20  Jakub Jelinek  <jakub@redhat.com>
3839
3840         * testsuite/util/testsuite_abi.cc (compare_symbols): If any symbol
3841         versions with _IEEE128_ substring are found, set ieee_version_found
3842         to true.  Ignore missing symbols with _IEEE128_ in version name if
3843         !ieee_version_found.  Use i->first as version_name instead of
3844         i->second.version_name if the latter is empty.
3845         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
3846
3847 2021-04-19  H.J. Lu  <hjl.tools@gmail.com>
3848
3849         * config/abi/post/x86_64-linux-gnu/x32/baseline_symbols.txt:
3850         Updated.
3851
3852 2021-04-17  Jakub Jelinek  <jakub@redhat.com>
3853
3854         * config/abi/post/powerpc-linux-gnu/baseline_symbols.txt: Update.
3855         * config/abi/post/powerpc64-linux-gnu/32/baseline_symbols.txt: Update.
3856
3857 2021-04-17  Jakub Jelinek  <jakub@redhat.com>
3858
3859         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
3860         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
3861         * config/abi/post/i386-linux-gnu/baseline_symbols.txt: Update.
3862         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
3863         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
3864         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
3865
3866 2021-04-15  Jonathan Wakely  <jwakely@redhat.com>
3867
3868         * testsuite/lib/dg-options.exp (add_options_for_libatomic): Also
3869         add libatomic options for 32-bit sparc*-*-linux-gnu.
3870
3871 2021-04-15  Jonathan Wakely  <jwakely@redhat.com>
3872
3873         PR libstdc++/96657
3874         * libsupc++/Makefile.am: Add atomicity.cc here.
3875         * src/c++98/Makefile.am: Remove it from here.
3876         * libsupc++/Makefile.in: Regenerate.
3877         * src/c++98/Makefile.in: Regenerate.
3878         * testsuite/18_support/exception_ptr/96657.cc: New test.
3879
3880 2021-04-13  Jonathan Wakely  <jwakely@redhat.com>
3881
3882         PR libstdc++/100060
3883         * include/std/bit: Only include <ext/numeric_traits.h> for
3884         hosted build, use <limits> otherwise.
3885
3886 2021-04-13  Jonathan Wakely  <jwakely@redhat.com>
3887
3888         * doc/xml/manual/backwards_compatibility.xml: Remove porting
3889         notes for libg++ and libstdc++-v2, and bibliography.
3890         * doc/html/*: Regenerated.
3891
3892 2021-04-12  Jonathan Wakely  <jwakely@redhat.com>
3893
3894         PR libstdc++/100044
3895         * include/bits/ranges_util.h (__detail::__iterator_sentinel_pair):
3896         Remove helper concept.
3897         (subrange(_Pr), subrange(Pr, __make_unsigned_like<...>)): Remove
3898         deduction guides, as per LWG 3404.
3899         * testsuite/std/ranges/subrange/lwg3282_neg.cc: Check that class
3900         template argument deduction fails.
3901
3902 2021-04-12  Jonathan Wakely  <jwakely@redhat.com>
3903
3904         * testsuite/26_numerics/random/linear_congruential_engine/requirements/non_uint_neg.cc:
3905         Adjust expected error for C++20 mode.
3906         * testsuite/tr1/5_numerical_facilities/random/linear_congruential/requirements/non_uint_neg.cc:
3907         Likewise.
3908
3909 2021-04-12  Jonathan Wakely  <jwakely@redhat.com>
3910
3911         PR libstdc++/99995
3912         * testsuite/17_intro/headers/c++1998/49745.cc: Include all
3913         standard headers and XFAIL for effective-target c++20.
3914
3915 2021-04-09  François Dumont  <fdumont@gcc.gnu.org>
3916
3917         PR libstdc++/99402
3918         * include/debug/helper_functions.h (__can_advance(_InputIterator,
3919         const std::pair<_Diff, _Distance_precision>&, int)): New.
3920         (__can_advance(const _Safe_iterator<>&,
3921         const std::pair<_Diff, _Distance_precision>&, int)): New.
3922         * include/debug/macros.h (__glibcxx_check_can_increment_dist): New,
3923         use latter.
3924         (__glibcxx_check_can_increment_range): Adapt to use latter.
3925         (__glibcxx_check_can_decrement_range): Likewise.
3926         * include/debug/safe_iterator.h
3927         (_Safe_iterator<>::_M_can_advance(const std::pair<_Diff, _Distance_precision>&,
3928         int)): New.
3929         (__can_advance(const _Safe_iterator<>&,
3930         const std::pair<_Diff, _Distance_precision>&, int)): New.
3931         * include/debug/safe_iterator.tcc
3932         (_Safe_iterator<>::_M_can_advance(const std::pair<_Diff, _Distance_precision>&,
3933         int)): New.
3934         (_Safe_iterator<>::_M_valid_range(const _Safe_iterator<>&,
3935         std::pair<difference_type, _Distance_precision>&, bool)): Adapt for
3936         __dp_sign_max_size.
3937         (__copy_move_a): Adapt to use __glibcxx_check_can_increment_dist.
3938         (__copy_move_backward_a): Likewise.
3939         (__equal_aux): Likewise.
3940         * include/debug/stl_iterator.h (__can_advance(const std::reverse_iterator<>&,
3941         const std::pair<_Diff, _Distance_precision>&, int)): New.
3942         (__can_advance(const std::move_iterator<>&,
3943         const std::pair<_Diff, _Distance_precision>&, int)): New.
3944         * testsuite/25_algorithms/copy/debug/99402.cc: New test.
3945
3946 2021-04-09  Jonathan Wakely  <jwakely@redhat.com>
3947
3948         PR libstdc++/99985
3949         * include/bits/hashtable.h (_Hashtable::_S_nothrow_move()): Fix
3950         to be a valid constexpr function in C++11.
3951         * testsuite/23_containers/unordered_set/cons/99985.cc: New test.
3952
3953 2021-04-09  Jonathan Wakely  <jwakely@redhat.com>
3954
3955         * include/bits/fs_fwd.h: Fix doxygen group command.
3956         * include/bits/streambuf_iterator.h: Likewise.
3957         * include/bits/uses_allocator_args.h: Likewise.
3958         * include/std/memory: Likewise.
3959         * include/tr1/complex: Likewise.
3960
3961 2021-04-08  Jonathan Wakely  <jwakely@redhat.com>
3962
3963         * include/bits/basic_string.h: Tweak doxygen comment.
3964
3965 2021-04-08  Patrick Palka  <ppalka@redhat.com>
3966
3967         * include/std/ranges (__detail::find): Define.
3968         (split_view::_OuterIter::operator++): Apply proposed resolution
3969         of LWG 3505.
3970         * testsuite/std/ranges/adaptors/split.cc (test10): New test.
3971
3972 2021-04-08  Patrick Palka  <ppalka@redhat.com>
3973
3974         * include/std/ranges (__detail::find_if): Simplify.
3975         (__detail::find_if_not): Likewise.
3976         (__detail::min): Remove.
3977         (__detail::mismatch): Simplify.
3978         (take_view::size): Use std::min instead of __detail::min.
3979
3980 2021-04-08  Patrick Palka  <ppalka@redhat.com>
3981
3982         * include/std/ranges (__detail::__returnable_element): New
3983         concept.
3984         (elements_view): Use this concept in its constraints.  Add
3985         missing private access specifier.
3986         (elements_view::_S_get_element): Define as per LWG 3502.
3987         (elements_view::operator*, elements_view::operator[]): Use
3988         _S_get_element.
3989         (elements_view::operator++): Remove unnecessary constraint
3990         as per LWG 3492.
3991         * testsuite/std/ranges/adaptors/elements.cc (test05): New test.
3992
3993 2021-04-08  Jonathan Wakely  <jwakely@redhat.com>
3994
3995         * doc/Makefile.am (stamp-pdf-doxygen): Also grep for
3996         out-of-memory error in log file.
3997         * doc/Makefile.in: Regenerate.
3998
3999 2021-04-08  Jonathan Wakely  <jwakely@redhat.com>
4000
4001         * configure: Regenerate.
4002
4003 2021-04-08  Jonathan Wakely  <jwakely@redhat.com>
4004
4005         * include/bits/random.h: Fix doxygen group commands.
4006         * include/bits/regex_constants.h: Likewise.
4007         * include/tr1/random.h: Likewise.
4008
4009 2021-04-08  Jonathan Wakely  <jwakely@redhat.com>
4010
4011         * include/bits/hashtable.h (_Hashtable::_S_nothrow_move()):
4012         New function to determine noexcept-specifier for move
4013         constructors.
4014         (_Hashtable): Use _S_nothrow_move() on move constructors.
4015         * testsuite/23_containers/unordered_map/cons/noexcept_move_construct.cc:
4016         Correct static assertion message.
4017         * testsuite/23_containers/unordered_multimap/cons/noexcept_move_construct.cc:
4018         Likewise.
4019         * testsuite/23_containers/unordered_multiset/cons/noexcept_move_construct.cc:
4020         Likewise.
4021         * testsuite/23_containers/unordered_set/cons/noexcept_move_construct.cc:
4022         Likewise.
4023
4024 2021-04-08  Patrick Palka  <ppalka@redhat.com>
4025
4026         PR libstdc++/98384
4027         * testsuite/20_util/to_chars/long_double.cc: Don't run the test
4028         on targets without a large long double.  XFAIL the execution on
4029         targets with a non-conforming printf.
4030
4031 2021-04-08  Patrick Palka  <ppalka@redhat.com>
4032
4033         PR libstdc++/99433
4034         * include/std/ranges (__adaptor::__maybe_refwrap): Remove.
4035         (__adaptor::__adaptor_invocable): New concept.
4036         (__adaptor::__adaptor_partial_app_viable): New concept.
4037         (__adaptor::_RangeAdaptorClosure): Rewrite, turning it into a
4038         non-template base class.
4039         (__adaptor::_RangeAdaptor): Rewrite, turning it into a CRTP base
4040         class template.
4041         (__adaptor::_Partial): New class template that represents
4042         partial application of a range adaptor non-closure.
4043         (__adaptor::__pipe_invocable): New concept.
4044         (__adaptor::_Pipe): New class template.
4045         (__detail::__can_ref_view): New concept.
4046         (__detail::__can_subrange): New concept.
4047         (all): Replace the lambda here with ...
4048         (_All): ... this functor.  Add appropriate constraints.
4049         (__detail::__can_filter_view): New concept.
4050         (filter, _Filter): As in all/_All.
4051         (__detail::__can_transform): New concept.
4052         (transform, _Transform): As in all/_All.
4053         (__detail::__can_take_view): New concept.
4054         (take, _Take): As in all/_All.
4055         (__detail::__can_take_while_view): New concept.
4056         (take_while, _TakeWhile): As in all/_All.
4057         (__detail::__can_drop_view): New concept.
4058         (drop, _Drop): As in all/_All.
4059         (__detail::__can_drop_while_view): New concept.
4060         (drop_while, _DropWhile): As in all/_All.
4061         (__detail::__can_join_view): New concept.
4062         (join, _Join): As in all/_All.
4063         (__detail::__can_split_view): New concept.
4064         (split, _Split): As in all/_All.  Rename template parameter
4065         _Fp to _Pattern.
4066         (__detail::__already_common): New concept.
4067         (__detail::__can_common_view): New concept.
4068         (common, _Common): As in all/_All.
4069         (__detail::__can_reverse_view): New concept.
4070         (reverse, _Reverse): As in all/_All.
4071         (__detail::__can_elements_view): New concept.
4072         (elements, _Elements): As in all/_All.
4073         (keys, values): Adjust.
4074         * testsuite/std/ranges/adaptors/99433.cc: New test.
4075         * testsuite/std/ranges/adaptors/all.cc: No longer expect that
4076         adding empty range adaptor closure objects to a pipeline doesn't
4077         increase the size of the pipeline.
4078         (test05): New test.
4079         * testsuite/std/ranges/adaptors/common.cc (test03): New test.
4080         * testsuite/std/ranges/adaptors/drop.cc (test09): New test.
4081         * testsuite/std/ranges/adaptors/drop_while.cc (test04): New test.
4082         * testsuite/std/ranges/adaptors/elements.cc (test04): New test.
4083         * testsuite/std/ranges/adaptors/filter.cc (test06): New test.
4084         * testsuite/std/ranges/adaptors/join.cc (test09): New test.
4085         * testsuite/std/ranges/adaptors/p2281.cc: New test.
4086         * testsuite/std/ranges/adaptors/reverse.cc (test07): New test.
4087         * testsuite/std/ranges/adaptors/split.cc (test01, test04):
4088         Adjust.
4089         (test09): New test.
4090         * testsuite/std/ranges/adaptors/split_neg.cc (test01): Adjust
4091         expected error message.
4092         (test02): Likewise.  Extend test.
4093         * testsuite/std/ranges/adaptors/take.cc (test06): New test.
4094         * testsuite/std/ranges/adaptors/take_while.cc (test05): New test.
4095         * testsuite/std/ranges/adaptors/transform.cc (test07, test08):
4096         New test.
4097
4098 2021-04-08  Jonathan Wakely  <jwakely@redhat.com>
4099
4100         * include/std/string_view: Adjust Doxygen @file comment.
4101
4102 2021-04-08  Jonathan Wakely  <jwakely@redhat.com>
4103
4104         * include/std/type_traits (is_scoped_enum<T>): Constrain partial
4105         specialization to not match incomplete enum types. Use a
4106         requires-expression instead of instantiating is_convertible.
4107         (is_scoped_enum<const T>): Add as workaround for PR c++/99968.
4108         * testsuite/20_util/is_scoped_enum/value.cc: Check with
4109         incomplete types and opaque-enum-declarations.
4110
4111 2021-04-07  Jonathan Wakely  <jwakely@redhat.com>
4112
4113         PR libstdc++/99805
4114         * src/c++17/fs_path.cc (path::_M_split_cmpts): Do not call
4115         non-const member on _M_pathname, to avoid copy-on-write.
4116         * testsuite/27_io/filesystem/path/decompose/parent_path.cc:
4117         Check construction from strings that might be shared.
4118
4119 2021-04-06  Jonathan Wakely  <jwakely@redhat.com>
4120
4121         * include/bits/move.h (forward, move, move_if_noexcept)
4122         (addressof): Add _GLIBCXX_NODISCARD.
4123         * include/bits/ranges_cmp.h (identity::operator()): Add
4124         nodiscard attribute.
4125         * include/c_global/cstddef (to_integer): Likewise.
4126         * include/std/bit (bit_cast): Likewise.
4127         * include/std/utility (as_const, to_underlying): Likewise.
4128
4129 2021-04-06  Jonathan Wakely  <jwakely@redhat.com>
4130
4131         * include/bits/move.h (forward): Change static_assert message
4132         to be unambiguous about what must be true.
4133         * testsuite/20_util/forward/c_neg.cc: Adjust dg-error.
4134         * testsuite/20_util/forward/f_neg.cc: Likewise.
4135
4136 2021-04-06  Jonathan Wakely  <jwakely@redhat.com>
4137
4138         * include/bits/alloc_traits.h: Use markdown for code font.
4139         * include/bits/basic_string.h: Fix @param names.
4140         * include/bits/max_size_type.h: Remove period after @file.
4141         * include/bits/regex.h: Fix duplicate @retval names, and rename.
4142         * include/ext/pb_ds/detail/priority_queue_base_dispatch.hpp: Add
4143         group open to match existing group close.
4144         * include/ext/pb_ds/priority_queue.hpp: Add blank line before group
4145         open.
4146
4147 2021-04-06  Jonathan Wakely  <jwakely@redhat.com>
4148
4149         * include/bits/atomic_base.h: Fix doxygen group close.
4150         * include/bits/basic_ios.h: Likewise.
4151         * include/bits/forward_list.h: Likewise.
4152         * include/bits/fs_dir.h: Likewise.
4153         * include/bits/fs_ops.h: Likewise.
4154         * include/bits/fs_path.h: Likewise.
4155         * include/bits/functional_hash.h: Likewise.
4156         * include/bits/gslice.h: Likewise.
4157         * include/bits/gslice_array.h: Likewise.
4158         * include/bits/hashtable_policy.h: Likewise.
4159         * include/bits/indirect_array.h: Likewise.
4160         * include/bits/locale_classes.h: Likewise.
4161         * include/bits/locale_facets.h: Likewise.
4162         * include/bits/locale_facets_nonio.h: Likewise.
4163         * include/bits/mask_array.h: Likewise.
4164         * include/bits/refwrap.h: Likewise.
4165         * include/bits/regex.h: Likewise.
4166         * include/bits/regex_automaton.h: Likewise.
4167         * include/bits/regex_compiler.h: Likewise.
4168         * include/bits/regex_constants.h: Likewise.
4169         * include/bits/regex_error.h: Likewise.
4170         * include/bits/regex_executor.h: Likewise.
4171         * include/bits/regex_scanner.h: Likewise.
4172         * include/bits/shared_ptr.h: Likewise.
4173         * include/bits/shared_ptr_atomic.h: Likewise.
4174         * include/bits/shared_ptr_base.h: Likewise.
4175         * include/bits/slice_array.h: Likewise.
4176         * include/bits/specfun.h: Likewise.
4177         * include/bits/std_function.h: Likewise.
4178         * include/bits/std_mutex.h: Likewise.
4179         * include/bits/stl_deque.h: Likewise.
4180         * include/bits/stl_iterator.h: Likewise.
4181         * include/bits/stl_iterator_base_types.h: Likewise.
4182         * include/bits/stl_map.h: Likewise.
4183         * include/bits/stl_multimap.h: Likewise.
4184         * include/bits/stl_multiset.h: Likewise.
4185         * include/bits/stl_numeric.h: Likewise.
4186         * include/bits/stl_pair.h: Likewise.
4187         * include/bits/stl_set.h: Likewise.
4188         * include/bits/stl_uninitialized.h: Likewise.
4189         * include/bits/stream_iterator.h: Likewise.
4190         * include/bits/streambuf_iterator.h: Likewise.
4191         * include/bits/unique_ptr.h: Likewise.
4192         * include/bits/unordered_map.h: Likewise.
4193         * include/bits/unordered_set.h: Likewise.
4194         * include/decimal/decimal: Likewise.
4195         * include/experimental/any: Likewise.
4196         * include/experimental/array: Likewise.
4197         * include/experimental/bits/fs_dir.h: Likewise.
4198         * include/experimental/bits/fs_fwd.h: Likewise.
4199         * include/experimental/bits/fs_ops.h: Likewise.
4200         * include/experimental/bits/fs_path.h: Likewise.
4201         * include/experimental/buffer: Likewise.
4202         * include/experimental/internet: Likewise.
4203         * include/experimental/optional: Likewise.
4204         * include/experimental/propagate_const: Likewise.
4205         * include/experimental/socket: Likewise.
4206         * include/ext/pb_ds/assoc_container.hpp: Likewise.
4207         * include/ext/pb_ds/detail/priority_queue_base_dispatch.hpp:
4208         Likewise.
4209         * include/ext/pb_ds/detail/tree_policy/node_metadata_selector.hpp: Likewise.
4210         * include/ext/pb_ds/detail/trie_policy/node_metadata_selector.hpp: Likewise.
4211         * include/ext/pb_ds/detail/types_traits.hpp: Likewise.
4212         * include/ext/pb_ds/exception.hpp: Likewise.
4213         * include/ext/pb_ds/priority_queue.hpp: Likewise.
4214         * include/ext/pb_ds/tag_and_trait.hpp: Likewise.
4215         * include/ext/random: Likewise.
4216         * include/std/any: Likewise.
4217         * include/std/atomic: Likewise.
4218         * include/std/bitset: Likewise.
4219         * include/std/chrono: Likewise.
4220         * include/std/complex: Likewise.
4221         * include/std/condition_variable: Likewise.
4222         * include/std/fstream: Likewise.
4223         * include/std/future: Likewise.
4224         * include/std/iostream: Likewise.
4225         * include/std/istream: Likewise.
4226         * include/std/mutex: Likewise.
4227         * include/std/numeric: Likewise.
4228         * include/std/ostream: Likewise.
4229         * include/std/ratio: Likewise.
4230         * include/std/shared_mutex: Likewise.
4231         * include/std/stdexcept: Likewise.
4232         * include/std/streambuf: Likewise.
4233         * include/std/system_error: Likewise.
4234         * include/std/thread: Likewise.
4235         * include/std/valarray: Likewise.
4236         * include/std/variant: Likewise.
4237         * include/tr1/cmath: Likewise.
4238         * include/tr1/regex: Likewise.
4239         * include/tr2/dynamic_bitset: Likewise.
4240         * libsupc++/atomic_lockfree_defines.h: Likewise.
4241         * libsupc++/exception: Likewise.
4242         * libsupc++/exception.h: Likewise.
4243         * libsupc++/exception_ptr.h: Likewise.
4244         * libsupc++/nested_exception.h: Likewise.
4245
4246 2021-03-31  Alexandre Oliva  <oliva@adacore.com>
4247
4248         * testsuite/30_threads/future/members/poll.cc: Use faster
4249         after-ready call in the calibration loop.
4250
4251 2021-03-29  Jonathan Wakely  <jwakely@redhat.com>
4252
4253         * doc/xml/manual/status_cxx2017.xml: Adjust link for PSTL.
4254         * doc/html/manual/status.html: Regenerate.
4255
4256 2021-03-28  François Dumont  <fdumont@gcc.gnu.org>
4257
4258         * include/debug/forward_list
4259         (forward_list(forward_list&&, const allocator_type&)): Add noexcept qualification.
4260         * include/debug/list (list(list&&, const allocator_type&)): Likewise and add
4261         call to safe container allocator aware move constructor.
4262         * include/debug/vector (vector(vector&&, const allocator_type&)):
4263         Fix noexcept qualification.
4264         * testsuite/23_containers/forward_list/cons/noexcept_move_construct.cc:
4265         Add allocator-extended move constructor noexceot qualification check.
4266         * testsuite/23_containers/list/cons/noexcept_move_construct.cc: Likewise.
4267
4268 2021-03-26  Jonathan Wakely  <jwakely@redhat.com>
4269
4270         * src/c++11/random.cc (USE_LCG): Define when a pseudo-random
4271         fallback is needed.
4272         [USE_LCG] (bad_seed, construct_lcg_at, destroy_lcg_at, __lcg):
4273         New helper functions and callback.
4274         (random_device::_M_init): Add 'prng' and 'all' enumerators.
4275         Replace switch with fallthrough with a series of 'if' statements.
4276         [USE_LCG]: Construct an lcg_type engine and use __lcg when cpuid
4277         checks fail.
4278         (random_device::_M_init_pretr1) [USE_MT19937]: Accept "prng"
4279         token.
4280         (random_device::_M_getval): Check for callback unconditionally
4281         and always pass _M_file pointer.
4282         * testsuite/26_numerics/random/random_device/85494.cc: Remove
4283         effective-target check. Use new random_device_available helper.
4284         * testsuite/26_numerics/random/random_device/94087.cc: Likewise.
4285         * testsuite/26_numerics/random/random_device/cons/default-cow.cc:
4286         Remove effective-target check.
4287         * testsuite/26_numerics/random/random_device/cons/default.cc:
4288         Likewise.
4289         * testsuite/26_numerics/random/random_device/cons/token.cc: Use
4290         new random_device_available helper. Test "prng" token.
4291         * testsuite/util/testsuite_random.h (random_device_available):
4292         New helper function.
4293
4294 2021-03-25  François Dumont  <fdumont@gcc.gnu.org>
4295
4296         * include/debug/string
4297         (basic_string(const basic_string&, const _Alloc&)): Define even if !_GLIBCXX_USE_CXX11_ABI.
4298         (basic_string(basic_string&&, const _Alloc&)): Likewise and add noexcept qualification.
4299         (basic_string<>::erase): Adapt to take __const_iterator.
4300         (basic_string(const _CharT*, const _Allocator&)): Remove assign call.
4301         (basic_string<>::insert(const_iterator, _InputIte, _InputIte)): Try to
4302         remove iterator debug layer even if !_GLIBCXX_USE_CXX11_ABI.
4303         [_GLIBCXX_USE_CHAR8_T] (__gnu_debug::u8string): New.
4304         (__gnu_debug::u16string, __gnu_debug::u32string): New.
4305         (std::hash<__gnu_debug::basic_string<>>): New partial specialization.
4306         (std::__is_fast_hash<__gnu_debug::basic_string<>>): Likewise.
4307         * testsuite/util/exception/safety.h
4308         (erase_base<__gnu_debug::basic_string<>>): New partial specialization.
4309         (insert_base<__gnu_debug::basic_string<>>): Likewise.
4310         * testsuite/util/testsuite_container_traits.h (traits<__gnu_debug::basic_string<>>):
4311         New partial specialization.
4312         * testsuite/21_strings/basic_string/hash/debug.cc: New test.
4313         * testsuite/21_strings/basic_string/requirements/citerators.cc:
4314         Add test on __gnu_debug::string.
4315         * testsuite/21_strings/basic_string/requirements/dr438/constructor.cc: Likewise.
4316         * testsuite/21_strings/basic_string/requirements/exception/basic.cc: Likewise.
4317         * testsuite/21_strings/basic_string/requirements/exception/generation_prohibited.cc:
4318         Likewise.
4319         * testsuite/21_strings/basic_string/requirements/exception/propagation_consistent.cc:
4320         Likewise.
4321         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char/1.cc:
4322         Likewise.
4323         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char16_t/1.cc:
4324         Likewise.
4325         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char32_t/1.cc:
4326         Likewise.
4327         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char8_t/1.cc:
4328         Likewise.
4329         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/wchar_t/1.cc:
4330         Likewise.
4331         * testsuite/21_strings/basic_string/requirements/typedefs.cc: Likewise.
4332
4333 2021-03-25  Jakub Jelinek  <jakub@redhat.com>
4334
4335         PR c++/99672
4336         * testsuite/18_support/source_location/consteval.cc (main): Adjust
4337         expected column numbers.
4338         * testsuite/18_support/source_location/1.cc (main): Likewise.
4339
4340 2021-03-25  Jonathan Wakely  <jwakely@redhat.com>
4341
4342         * libsupc++/new_opa.cc [!_GLIBCXX_HOSTED]: Declare malloc.
4343
4344 2021-03-25  Jonathan Wakely  <jwakely@redhat.com>
4345
4346         * testsuite/util/exception/safety.h (setup_base::generate):
4347         Support seeding random engine.
4348         (erase_point, erase_range): Adjust range of random numbers to
4349         ensure dereferenceable iterators are used where required.
4350         (generation_prohibited::run): Do not try to erase from empty
4351         containers.
4352         * testsuite/util/testsuite_containergen.h (test_containers):
4353         Support seeding random engine.
4354
4355 2021-03-23  Jonathan Wakely  <jwakely@redhat.com>
4356
4357         * testsuite/std/ranges/adaptors/reverse.cc: Replace duplicated
4358         line with a check that uses the const being/end overloads.
4359
4360 2021-03-23  Moritz Sichert  <sichert@in.tum.de>
4361
4362         * include/std/ranges (reverse_view::begin, reverse_view::end):
4363         Qualify make_reverse_iterator calls to avoid ADL.
4364         * testsuite/std/ranges/adaptors/reverse.cc: Test that
4365         views::reverse works when make_reverse_iterator is defined
4366         in an associated namespace.
4367
4368 2021-03-23  Jonathan Wakely  <jwakely@redhat.com>
4369
4370         * include/bits/c++config (_GLIBCXX_LONG_DOUBLE_ALT128_COMPAT):
4371         Do not define when compiling with Clang.
4372
4373 2021-03-22  Jonathan Wakely  <jwakely@redhat.com>
4374
4375         * include/std/string_view (basic_string_view(Range&&)): Define new
4376         constructor and deduction guide.
4377         * testsuite/21_strings/basic_string_view/cons/char/range_c++20.cc: New test.
4378         * testsuite/21_strings/basic_string_view/cons/wchar_t/range_c++20.cc: New test.
4379
4380 2021-03-22  Jonathan Wakely  <jwakely@redhat.com>
4381
4382         * include/bits/range_access.h (begin(T (&)[N]), end(T (&)[N])):
4383         Add missing 'noexcept' as per LWG 2280.
4384         (rbegin(T (&)[N]), rend(T (&)[N]), rbegin(initializer_list<T>))
4385         (rend(initializer_list<T>)): Add 'noexcept' as per LWG 3537.
4386         * testsuite/24_iterators/range_access/range_access.cc: Check for
4387         expected noexcept specifiers. Check result types of generic
4388         std::begin and std::end overloads.
4389         * testsuite/24_iterators/range_access/range_access_cpp14.cc:
4390         Check for expected noexcept specifiers.
4391         * testsuite/24_iterators/range_access/range_access_cpp17.cc:
4392         Likewise.
4393
4394 2021-03-19  Jonathan Wakely  <jwakely@redhat.com>
4395
4396         * include/std/type_traits (is_scoped_enum): Define.
4397         * include/std/version (__cpp_lib_is_scoped_enum): Define.
4398         * testsuite/20_util/is_scoped_enum/value.cc: New test.
4399         * testsuite/20_util/is_scoped_enum/version.cc: New test.
4400
4401 2021-03-16  Jonathan Wakely  <jwakely@redhat.com>
4402
4403         PR libstdc++/99341
4404         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Remove
4405         std::once_flag symbols.
4406         * config/abi/post/ia64-linux-gnu/baseline_symbols.txt: Likewise.
4407         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Likewise.
4408         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt:
4409         Likewise.
4410         * config/abi/pre/gnu.ver: Likewise.
4411         * src/c++11/mutex.cc [_GLIBCXX_HAVE_LINUX_FUTEX]
4412         (struct __once_flag_compat): Remove.
4413         (_ZNSt9once_flag11_M_activateEv): Remove.
4414         (_ZNSt9once_flag9_M_finishEb): Remove.
4415
4416 2021-03-16  Jonathan Wakely  <jwakely@redhat.com>
4417
4418         PR libstdc++/99341
4419         * include/std/mutex [_GLIBCXX_HAVE_LINUX_FUTEX] (once_flag):
4420         Revert to pthread_once_t implementation.
4421         [_GLIBCXX_HAVE_LINUX_FUTEX] (call_once): Likewise.
4422         * src/c++11/mutex.cc [_GLIBCXX_HAVE_LINUX_FUTEX]
4423         (struct __once_flag_compat): New type matching the reverted
4424         implementation of once_flag using futexes.
4425         (once_flag::_M_activate): Remove, replace with ...
4426         (_ZNSt9once_flag11_M_activateEv): ... alias symbol.
4427         (once_flag::_M_finish): Remove, replace with ...
4428         (_ZNSt9once_flag9_M_finishEb): ... alias symbol.
4429         * testsuite/30_threads/call_once/66146.cc: Removed.
4430
4431 2021-03-15  Iain Sandoe  <iain@sandoe.co.uk>
4432
4433         * testsuite/17_intro/names.cc: Exclude j from the list
4434         of test symbols for Darwin.
4435
4436 2021-03-15  Iain Sandoe  <iain@sandoe.co.uk>
4437
4438         * config/os/bsd/darwin/ppc-extra.ver: Add matching for
4439         to_chars and from_chars for long double.
4440
4441 2021-03-15  Patrick Palka  <ppalka@redhat.com>
4442
4443         * include/bits/max_size_type.h (__max_size_type::operator _Tp):
4444         Fix formatting.
4445         (__max_size_type::operator++): Define.
4446         (__max_size_type::operator--): Likewise.
4447         (__max_size_type::operator<=>): Conditionally define (in place
4448         of the other comparison operators).
4449         (__max_diff_type::operator _Tp): Fix formatting.
4450         (__max_diff_type::operator++): Define.
4451         (__max_diff_type::operator--): Likewise.
4452         (__max_diff_type::operator<=>): Conditionally define (in place
4453         of the other comparison operators).
4454         * testsuite/std/ranges/iota/max_size_type.cc (test01): Test
4455         these operator overloads.
4456
4457 2021-03-15  Caroline Tice  <cmtice@google.com>
4458
4459         PR libstdc++/99172
4460         * src/Makefile.am (AM_CXXFLAGS_PRE, AM_CXXFLAGS): Add
4461         AM_CXXFLAGS_PRE with the old definition of AM_CXXFLAGS; make
4462         AM_CXXFLAGS to be AM_CXXFLAGS_PRE with '-fvtable-verify=std'
4463         filtered out.
4464         * src/Makefile.in: Regenerate.
4465
4466 2021-03-11  Patrick Palka  <ppalka@redhat.com>
4467
4468         * src/c++17/floating_to_chars.cc: Simplify the file as if
4469         __SIZEOF_INT128__ is always defined.
4470         [!defined __SIZEOF_INT128__]: Include "uint128_t.h".  Define
4471         a base-10 to_chars overload for the uint128_t class type.
4472         * src/c++17/uint128_t.h: New file.
4473         * testsuite/20_util/to_chars/long_double.cc: No longer expect an
4474         execution FAIL on targets that have a large long double type
4475         but lack __int128.
4476
4477 2021-03-11  Patrick Palka  <ppalka@redhat.com>
4478
4479         * src/c++17/ryu/LOCAL_PATCHES: Update.
4480         * src/c++17/ryu/d2s_intrinsics.h: Don't define uint128_t.
4481         * src/c++17/ryu/generic_128.h: Likewise.
4482         * src/c++17/ryu/ryu_generic_128.h (struct floating_decimal_128):
4483         Use uint128_t instead of __uint128_t.
4484         (generic_binary_to_decimal): Likewise.
4485
4486 2021-03-11  Patrick Palka  <ppalka@redhat.com>
4487
4488         * src/c++17/ryu/LOCAL_PATCHES: New file.
4489
4490 2021-03-11  Patrick Palka  <ppalka@redhat.com>
4491
4492         * src/c++17/floating_to_chars.cc (uint128_t): New conditionally
4493         defined alias of unsigned __int128.
4494         (floating_type_traits_binary128::mantissa_t): Use uint128_t
4495         instead of unsigned __int128.
4496         (floating_type_traits<long double>::mantissa_t)
4497         [LONG_DOUBLE_KIND == LDK_IBM128]: Likewise.
4498         (get_ieee_repr): Likewise.  Make casts from uint_t to mantissa_t
4499         and uint32_t explicit.  Simplify the extraction of mantissa,
4500         exponent and sign bit.
4501
4502 2021-03-11  Jonathan Wakely  <jwakely@redhat.com>
4503
4504         * include/std/barrier (barrier::arrival_token): New move-only
4505         class that encapsulates the underlying token value.
4506
4507 2021-03-11  Jonathan Wakely  <jwakely@redhat.com>
4508
4509         * python/libstdcxx/v6/printers.py (find_type): Use tag attribute
4510         instead of unqualified() method.
4511
4512 2021-03-11  Jonathan Wakely  <jwakely@redhat.com>
4513
4514         PR libstdc++/99537
4515         * include/std/stop_token (_Stop_state_t::_M_release_ownership):
4516         Use acq_rel memory ordering.
4517
4518 2021-03-11  Jonathan Wakely  <jwakely@redhat.com>
4519
4520         PR libstdc++/99533
4521         * src/c++17/fs_dir.cc (recursive_directory_iterator): Use new
4522         helper function to check for permission denied errors.
4523         * src/filesystem/dir.cc (recursive_directory_iterator):
4524         Likewise.
4525         * src/filesystem/dir-common.h (is_permission_denied_error): New
4526         helper function.
4527
4528 2021-03-11  Jonathan Wakely  <jwakely@redhat.com>
4529
4530         PR libstdc++/99536
4531         * include/bits/random.h (normal_distribution): Use
4532         default-initializer for _M_saved and _M_saved_available.
4533
4534 2021-03-10  John David Anglin  <danglin@gcc.gnu.org>
4535
4536         * testsuite/29_atomics/atomic/wait_notify/bool.cc: Add options to
4537         link with libatomic.
4538         * testsuite/29_atomics/atomic/wait_notify/generic.cc: Likewise.
4539         * testsuite/29_atomics/atomic/wait_notify/pointers.cc: Likewise.
4540         * testsuite/29_atomics/atomic_flag/wait_notify/1.cc: Likewise.
4541         * testsuite/30_threads/barrier/arrive.cc: Likewise.
4542         * testsuite/30_threads/barrier/arrive_and_drop.cc: Likewise.
4543         * testsuite/30_threads/barrier/arrive_and_wait.cc: Likewise.
4544         * testsuite/30_threads/barrier/completion.cc: Likewise.
4545         * testsuite/30_threads/latch/3.cc: Likewise.
4546         * testsuite/30_threads/semaphore/try_acquire.cc: Likewise.
4547         * testsuite/30_threads/semaphore/try_acquire_for.cc: Likewise.
4548         * testsuite/30_threads/semaphore/try_acquire_until.cc: Likewise.
4549
4550 2021-03-10  Jonathan Wakely  <jwakely@redhat.com>
4551
4552         PR libstdc++/99413
4553         * include/bits/align.h: Include debug/assertions.h.
4554         * include/bits/codecvt.h: Include bits/c++config.h.
4555         * include/bits/enable_special_members.h: Likewise.
4556         * include/bits/erase_if.h: Likewise.
4557         * include/bits/functional_hash.h: Include <type_traits>.
4558         * include/bits/invoke.h: Include bits/move.h.
4559         * include/bits/ostream_insert.h: Include bits/exception_defines.h.
4560         * include/bits/parse_numbers.h: Include <type_traits>.
4561         * include/bits/predefined_ops.h: Include bits/c++config.h.
4562         * include/bits/range_access.h: Include bits/stl_iterator.h.
4563         * include/bits/stl_bvector.h: Do not include bits/stl_vector.h.
4564         * include/bits/stl_iterator.h: Include bits/stl_iterator_base_types.h.
4565         * include/bits/stl_uninitialized.h: Include bits/stl_algobase.h.
4566         * include/bits/uniform_int_dist.h: Include bits/concept_check.h.
4567         * include/bits/unique_lock.h: Include bits/std_mutex.h.
4568         * include/debug/assertions.h: Include bits/c++config.h.
4569
4570 2021-03-10  Jonathan Wakely  <jwakely@redhat.com>
4571
4572         * include/bits/ranges_cmp.h (__eq_builtin_ptr_cmp): Remove.
4573         (ranges::equal_to, ranges::not_equal_to): Do not constrain
4574         with __eq_builtin_ptr_cmp.
4575         (ranges::less, ranges::greater, ranges::less_equal)
4576         (ranges::greater_equal): Do not constrain with
4577         __less_builtin_ptr_cmp.
4578         * libsupc++/compare (compare_three_way): Do not constrain with
4579         __3way_builtin_ptr_cmp.
4580         * testsuite/18_support/comparisons/object/builtin-ptr-three-way.cc: Moved to...
4581         * testsuite/18_support/comparisons/object/lwg3530.cc: ...here.
4582         * testsuite/20_util/function_objects/range.cmp/lwg3530.cc: New test.
4583
4584 2021-03-10  Jonathan Wakely  <jwakely@redhat.com>
4585
4586         * testsuite/std/time/syn_c++20.cc: Enable synopsis checks for
4587         C++20 calendar types.
4588
4589 2021-03-06  Jakub Jelinek  <jakub@redhat.com>
4590
4591         PR libstdc++/99396
4592         * include/std/bit (__rotl, __rotr): Add optimized variants for power of
4593         two _Nd which the compiler can pattern match the rotates.
4594
4595 2021-03-04  Jonathan Wakely  <jwakely@redhat.com>
4596
4597         PR libstdc++/99382
4598         * testsuite/20_util/specialized_algorithms/uninitialized_default_n/sizes.cc:
4599         Make storage larger than required. Verify no write to the last
4600         element.
4601         * testsuite/20_util/specialized_algorithms/uninitialized_value_construct_n/sizes.cc:
4602         Likewise.
4603
4604 2021-03-03  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
4605
4606         * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
4607         * config/abi/post/i386-solaris/amd64/baseline_symbols.txt:
4608         Likewise.
4609         * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
4610         * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
4611         Likewise.
4612
4613 2021-03-03  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
4614
4615         * include/experimental/bits/simd.h: Replace reserved _X, _B by
4616         _Xp, _Bp.
4617         * include/experimental/bits/simd_builtin.h: Likewise.
4618         * include/experimental/bits/simd_x86.h: Likewise.
4619
4620 2021-02-27  Jonathan Wakely  <jwakely@redhat.com>
4621
4622         PR libstdc++/99301
4623         * include/std/chrono (year_month_day::_M_days_since_epoch()):
4624         Convert chrono::month and chrono::day to unsigned before
4625         converting to uint32_t.
4626
4627 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
4628
4629         * include/std/chrono (year_month_day::_S_from_days): Perform
4630         all calculations with type uint32_t.
4631
4632 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
4633
4634         * doc/xml/manual/abi.xml: Document versioning for GCC 11.
4635         * doc/html/manual/abi.html: Regenerate.
4636
4637 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
4638
4639         PR libstdc++/99270
4640         * testsuite/27_io/headers/cstdio/types_std.cc: Use pointer to
4641         FILE instead of FILE.
4642
4643 2021-02-25  Andreas Schwab  <schwab@suse.de>
4644
4645         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
4646         * config/abi/post/ia64-linux-gnu/baseline_symbols.txt: Update.
4647         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
4648         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
4649
4650 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
4651
4652         PR libstdc++/99265
4653         * include/std/chrono (year_month_day::_S_from_days): Cast long
4654         to int explicitly.
4655
4656 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
4657
4658         * include/std/utility (to_underlying): Define.
4659         * include/std/version (__cpp_lib_to_underlying): Define.
4660         * testsuite/20_util/to_underlying/1.cc: New test.
4661         * testsuite/20_util/to_underlying/version.cc: New test.
4662
4663 2021-02-24  Jonathan Wakely  <jwakely@redhat.com>
4664
4665         PR libstdc++/99261
4666         * src/c++17/floating_to_chars.cc (sprintf_ld): Add extra args
4667         before value to be printed.
4668
4669 2021-02-24  Patrick Palka  <ppalka@redhat.com>
4670
4671         * src/c++17/floating_to_chars.cc (__floating_to_chars_precision):
4672         Relax the condition that guards the printf code path to accept
4673         F128_type as well as long double.
4674
4675 2021-02-24  Cassio Neri  <cassio.neri@gmail.com>
4676
4677         * include/std/chrono (year_month_day_last:day): New
4678         implementation.
4679
4680 2021-02-24  Cassio Neri  <cassio.neri@gmail.com>
4681
4682         * include/std/chrono (year::is_leap): New implementation.
4683         * testsuite/std/time/year/2.cc: New test.
4684
4685 2021-02-24  Cassio Neri  <cassio.neri@gmail.com>
4686
4687         * include/std/chrono (year_month_day::_M_days_since_epoch):
4688         New implementation.
4689         * testsuite/std/time/year_month_day/4.cc: New test.
4690
4691 2021-02-24  Cassio Neri  <cassio.neri@gmail.com>
4692
4693         * include/std/chrono (year_month_day::_S_from_days): New
4694         implementation.
4695         * testsuite/std/time/year_month_day/3.cc: New test.
4696
4697 2021-02-24  Patrick Palka  <ppalka@redhat.com>
4698
4699         PR libstdc++/98384
4700         * testsuite/20_util/to_chars/long_double.cc: Include <optional>.
4701         (test01): Simplify verifying the nearby values by using a
4702         2-iteration loop and a dedicated output buffer to check that the
4703         nearby values are different.  Factor out the printf-based
4704         verification into a local function, and check that the leading
4705         hex digits agree before comparing to the output of printf.  Also
4706         verify the output by round-tripping it through from_chars.
4707
4708 2021-02-24  Jonathan Wakely  <jwakely@redhat.com>
4709
4710         PR libstdc++/98389
4711         * config/abi/pre/gnu.ver (GLIBCXX_3.4.29): Do not match to_chars
4712         symbols for long double arguments mangled as 'g'.
4713         * config/os/gnu-linux/ldbl-extra.ver: Likewise.
4714         * config/os/gnu-linux/ldbl-ieee128-extra.ver: Likewise.
4715         * src/c++17/Makefile.am [GLIBCXX_LDBL_ALT128_COMPAT_TRUE]:
4716         Use -mabi=ibmlongdouble for floating_to_chars.cc.
4717         * src/c++17/Makefile.in: Regenerate.
4718         * src/c++17/floating_to_chars.cc (floating_type_traits_binary128):
4719         New type defining type traits of IEEE binary128 format.
4720         (floating_type_traits<__float128>): Define specialization.
4721         (floating_type_traits<long double>): Define in terms of
4722         floating_type_traits_binary128 when appropriate.
4723         (floating_to_shortest_scientific): Handle __float128.
4724         (sprintf_ld): New function template for printing a long double
4725         or __ieee128 value using sprintf.
4726         (__floating_to_chars_shortest, __floating_to_chars_precision):
4727         Use sprintf_ld.
4728         (to_chars): Define overloads for __float128.
4729
4730 2021-02-24  Jonathan Wakely  <jwakely@redhat.com>
4731
4732         * testsuite/17_intro/names.cc: Undefine 'u' on powerpc*-linux*.
4733
4734 2021-02-23  Martin Sebor  <msebor@redhat.com>
4735
4736         PR c++/99074
4737         * libsupc++/dyncast.cc (__dynamic_cast): Return null when
4738         first argument is null.
4739
4740 2021-02-23  Jakub Jelinek  <jakub@redhat.com>
4741
4742         PR libstdc++/99181
4743         * testsuite/21_strings/char_traits/requirements/char/99181.cc: New
4744         test.
4745
4746 2021-02-23  Jakub Jelinek  <jakub@redhat.com>
4747
4748         PR libstdc++/99181
4749         * include/bits/char_traits.h (char_traits<char>::compare): For
4750         constexpr evaluation don't call
4751         __gnu_cxx::char_traits<char_type>::compare but do the comparison loop
4752         directly.
4753
4754 2021-02-23  Jakub Jelinek  <jakub@redhat.com>
4755
4756         PR libstdc++/97549
4757         * include/pstl/parallel_backend_serial.h: Remove __pstl::__par_backend.
4758
4759 2021-02-23  Patrick Palka  <ppalka@redhat.com>
4760
4761         PR libstdc++/98384
4762         * src/c++17/floating_to_chars.cc (get_ieee_repr): Extract
4763         the high- and low-order parts from an IBM long double value
4764         in an endian-agnostic way.
4765
4766 2021-02-19  Jonathan Wakely  <jwakely@redhat.com>
4767
4768         * include/bits/atomic_wait.h (__thread_relax()): Call
4769         __thread_yield() not __gthread_yield().
4770
4771 2021-02-15  Jonathan Wakely  <jwakely@redhat.com>
4772
4773         * include/bits/atomic_wait.h (__thread_yield()): Check
4774         _GLIBCXX_HAS_GTHREADS before using __gthread_yield.
4775         (__thread_relax()): Use __thread_yield() instead of repeating
4776         the preprocessor checks for __gthread_yield.
4777
4778 2021-02-15  Jonathan Wakely  <jwakely@redhat.com>
4779
4780         * include/std/mutex (once_flag::_M_activate()): Add explicit
4781         return statement for passive case.
4782         (once_flag::_M_finish(bool)): Use reserved name for parameter.
4783
4784 2021-02-14  Jonathan Wakely  <jwakely@redhat.com>
4785
4786         PR libstdc++/99096
4787         * testsuite/util/testsuite_fs.h: Always include <unistd.h>.
4788
4789 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
4790
4791         PR libstdc++/88881
4792         * src/c++17/fs_ops.cc (fs::symlink_status): Re-enable workaround.
4793
4794 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
4795
4796         * doc/xml/manual/status_cxx2014.xml: Document implementation
4797         specific properties of std::experimental::filesystem::rename.
4798         * doc/xml/manual/status_cxx2017.xml: Document implementation
4799         specific properties of std::filesystem::rename.
4800         * doc/html/*: Regenerate.
4801         * src/c++17/fs_ops.cc (fs::rename): Implement correct behaviour
4802         for directories on Windows.
4803         * src/filesystem/ops-common.h (__gnu_posix::rename): Use
4804         MoveFileExW on Windows.
4805         * testsuite/27_io/filesystem/operations/rename.cc: New test.
4806         * testsuite/experimental/filesystem/operations/rename.cc: New test.
4807
4808 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
4809
4810         * testsuite/util/testsuite_fs.h (nonexistent_path): Add
4811         random number to the path.
4812
4813 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
4814
4815         * include/experimental/internet (address_v6::to_string): Include
4816         scope ID in string.
4817         * testsuite/experimental/net/internet/address/v6/members.cc:
4818         Test to_string() results.
4819
4820 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
4821
4822         * include/experimental/internet (address_v6::any): Avoid using
4823         memcpy in constexpr function.
4824         (address_v6::loopback): Likewise.
4825         (make_address_v6): Fix missing return statements on error paths.
4826         * include/experimental/io_context: Avoid -Wdangling-else
4827         warning.
4828         * testsuite/experimental/net/internet/address/v4/members.cc:
4829         Remove unused variables.
4830         * testsuite/experimental/net/internet/address/v6/members.cc:
4831         New test.
4832
4833 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
4834
4835         * include/bits/shared_ptr_base.h (__shared_ptr::_M_get_deleter):
4836         Add unused attribute to parameter.
4837         * src/c++11/shared_ptr.cc (_Sp_make_shared_tag::_S_eq):
4838         Likewise.
4839
4840 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
4841
4842         * testsuite/27_io/basic_ostream/emit/1.cc: Expect test to fail
4843         if -fno-rtti is used.
4844         * testsuite/30_threads/async/forced_unwind.cc: Expect test
4845         to abort if -fno-rtti is used.
4846
4847 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
4848
4849         * testsuite/util/testsuite_allocator.h (memory_resource):
4850         Remove requirement for RTTI and exceptions to be enabled.
4851
4852 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
4853
4854         * testsuite/27_io/basic_istringstream/rdbuf/char/2832.cc: Use
4855         static_cast when RTTI is disabled.
4856         * testsuite/27_io/basic_istringstream/rdbuf/wchar_t/2832.cc:
4857         Likewise.
4858         * testsuite/27_io/basic_ostringstream/rdbuf/char/2832.cc:
4859         Likewise.
4860         * testsuite/27_io/basic_ostringstream/rdbuf/wchar_t/2832.cc:
4861         Likewise.
4862         * testsuite/27_io/basic_stringstream/str/char/2.cc:
4863         Likewise.
4864         * testsuite/27_io/basic_stringstream/str/wchar_t/2.cc:
4865         Likewise.
4866
4867 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
4868
4869         * include/std/ostream (__syncbuf_base::_S_get): Mark parameter
4870         as unused and only use dynamic_cast when RTTI is enabled.
4871
4872 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
4873
4874         PR libstdc++/99077
4875         * src/c++11/cxx11-ios_failure.cc (__ios_failure(const char*, int)):
4876         Change int parameter to error_code, to match std::ios_failure.
4877         (__throw_ios_failure(const char*, int)): Construct error_code
4878         from int parameter.
4879
4880 2021-02-11  Jonathan Wakely  <jwakely@redhat.com>
4881
4882         * libsupc++/eh_ptr.cc (_GLIBCXX_EH_PTR_RELOPS_COMPAT): Define
4883         new macro.
4884         * libsupc++/exception_ptr.h (_GLIBCXX_EH_PTR_USED): Check new
4885         macro instead of _GLIBCXX_EH_PTR_COMPAT.
4886         (operator==): Likewise.
4887
4888 2021-02-11  Jonathan Wakely  <jwakely@redhat.com>
4889
4890         PR libstdc++/99058
4891         * doc/xml/manual/status_cxx2011.xml: Document when support
4892         became stable.
4893         * doc/xml/manual/status_cxx2014.xml: Likewise.
4894         * doc/xml/manual/status_cxx2017.xml: Likewise.
4895         * doc/html/manual/status.html: Regenerate.
4896
4897 2021-02-10  Jonathan Wakely  <jwakely@redhat.com>
4898
4899         PR libstdc++/88881
4900         * src/c++17/fs_ops.cc (fs::status): Re-enable workaround.
4901
4902 2021-02-10  Jonathan Wakely  <jwakely@redhat.com>
4903
4904         * src/c++17/fs_ops.cc (fs::create_hard_link, fs::equivalent)
4905         (fs::remove): Use std::system_category() for error codes from
4906         GetLastError().
4907         * src/filesystem/ops.cc (fs::create_hard_link, fs::remove):
4908         Likewise.
4909
4910 2021-02-10  Jonathan Wakely  <jwakely@redhat.com>
4911
4912         * testsuite/27_io/filesystem/operations/proximate.cc: Fix typo
4913         in __MINGW32__ macro name.
4914         * testsuite/27_io/filesystem/path/compare/lwg2936.cc: Likewise.
4915         * testsuite/27_io/filesystem/path/generation/proximate.cc:
4916         Likewise.
4917         * testsuite/27_io/filesystem/path/generation/relative.cc:
4918         Likewise.
4919         * testsuite/util/testsuite_fs.h: Likewise.
4920
4921 2021-02-09  François Dumont  <fdumont@gcc.gnu.org>
4922
4923         * include/bits/stl_tree.h
4924         (__has_is_transparent, __has_is_transparent_t): Move...
4925         * include/bits/stl_function.h: ...here.
4926         * include/bits/hashtable_policy.h (_Hash_code_base<>::_M_hash_code_tr): New..
4927         (_Hashtable_base<>::_M_equals_tr): New.
4928         * include/bits/hashtable.h (_Hashtable<>::_M_find_tr, _Hashtable<>::_M_count_tr,
4929         _Hashtable<>::_M_equal_range_tr): New member function templates to perform
4930         heterogeneous lookup.
4931         (_Hashtable<>::_M_find_before_node_tr): New.
4932         (_Hashtable<>::_M_find_node_tr): New.
4933         * include/bits/unordered_map.h (unordered_map::find<>, unordered_map::count<>,
4934         unordered_map::contains<>, unordered_map::equal_range<>): New member function
4935         templates to perform heterogeneous lookup.
4936         (unordered_multimap::find<>, unordered_multimap::count<>,
4937         unordered_multimap::contains<>, unordered_multimap::equal_range<>): Likewise.
4938         * include/bits/unordered_set.h  (unordered_set::find<>, unordered_set::count<>,
4939         unordered_set::contains<>, unordered_set::equal_range<>): Likewise.
4940         (unordered_multiset::find<>, unordered_multiset::count<>,
4941         unordered_multiset::contains<>, unordered_multiset::equal_range<>): Likewise.
4942         * include/debug/unordered_map
4943         (unordered_map::find<>, unordered_map::equal_range<>): Likewise.
4944         (unordered_multimap::find<>, unordered_multimap::equal_range<>): Likewise.
4945         * include/debug/unordered_set
4946         (unordered_set::find<>, unordered_set::equal_range<>): Likewise.
4947         (unordered_multiset::find<>, unordered_multiset::equal_range<>): Likewise.
4948         * testsuite/23_containers/unordered_map/operations/1.cc: New test.
4949         * testsuite/23_containers/unordered_multimap/operations/1.cc: New test.
4950         * testsuite/23_containers/unordered_multiset/operations/1.cc: New test.
4951         * testsuite/23_containers/unordered_set/operations/1.cc: New test.
4952
4953 2021-02-09  François Dumont  <fdumont@gcc.gnu.org>
4954
4955         * include/bits/stl_deque.h
4956         (std::operator-(deque::iterator, deque::iterator)): Replace if/then with
4957         a null pointer test.
4958
4959 2021-02-09  Jonathan Wakely  <jwakely@redhat.com>
4960
4961         * testsuite/27_io/filesystem/operations/remove_all.cc: Remove
4962         test directory after making it writable again.
4963         * testsuite/experimental/filesystem/operations/remove_all.cc:
4964         Likewise.
4965
4966 2021-02-09  Jonathan Wakely  <jwakely@redhat.com>
4967
4968         PR libstdc++/99021
4969         * include/std/coroutine (coroutine_handle<P>::from_address): Add
4970         noexcept.
4971
4972 2021-02-09  Vladimir Vishnevsky  <vv.os.swe@gmail.com>
4973
4974         * include/ext/stdio_sync_filebuf.h: Remove unused <unistd.h>.
4975         * src/c++17/fs_ops.cc (fs::permissions): Qualify mode_t.
4976
4977 2021-02-09  Jakub Jelinek  <jakub@redhat.com>
4978
4979         PR middle-end/98465
4980         * include/bits/basic_string.tcc (basic_string::_M_replace): When __s
4981         points to the characters moved by earlier _S_move, compute the source
4982         address using expression based on the __p pointer rather than __s
4983         pointer.
4984
4985 2021-02-03  Jonathan Wakely  <jwakely@redhat.com>
4986
4987         * testsuite/19_diagnostics/error_code/operators/not_equal.cc:
4988         Add comparison with same category and different values.
4989         * testsuite/19_diagnostics/error_code/operators/less.cc:
4990         Likewise. Fix comparison involving different categories.
4991         * testsuite/19_diagnostics/error_code/operators/three_way.cc:
4992         Likewise.
4993         * testsuite/19_diagnostics/error_condition/operators/less.cc:
4994         Add comment.
4995         * testsuite/19_diagnostics/error_condition/operators/three_way.cc:
4996         Likewise.
4997
4998 2021-02-03  yaozhongxiao  <yaozhongxiao@linux.alibaba.com>
4999
5000         * include/experimental/bits/simd_neon.h: Replace repeated vpadd
5001         calls with a single vaddv for aarch64.
5002
5003 2021-02-03  Matthias Kretz  <kretz@kde.org>
5004
5005         * testsuite/Makefile.am: Warn about the workaround. Add
5006         -fno-tree-vrp to CXXFLAGS passed to the check_simd script.
5007         Improve initial user feedback from make check-simd.
5008         * testsuite/Makefile.in: Regenerated.
5009
5010 2021-02-03  Matthias Kretz  <kretz@kde.org>
5011
5012         * include/experimental/bits/simd.h: Add __detail::_Minimum and
5013         __detail::_Maximum to use them as _BinaryOperation to _S_reduce.
5014         Add hmin and hmax overloads for simd and const_where_expression.
5015         * include/experimental/bits/simd_scalar.h
5016         (_SimdImplScalar::_S_reduce): Make unused _BinaryOperation
5017         parameter const-ref to allow calling _S_reduce with an rvalue.
5018         * testsuite/experimental/simd/tests/reductions.cc: Add tests for
5019         hmin and hmax. Since the compiler statically determined that all
5020         tests pass, repeat the test after a call to make_value_unknown.
5021
5022 2021-02-03  Matthias Kretz  <kretz@kde.org>
5023
5024         * testsuite/experimental/simd/tests/bits/verify.h (verify): Add
5025         instruction pointer data member. Ensure that the `if (m_failed)`
5026         branch is always inlined into the calling code. The body of the
5027         conditional can still be a function call. Move the get_ip call
5028         into the verify ctor to simplify the ctor calls.
5029         (COMPARE): Don't mention the use of all_of for reduction of a
5030         simd_mask. It only distracts from the real issue.
5031
5032 2021-02-03  Matthias Kretz  <kretz@kde.org>
5033
5034         * testsuite/experimental/simd/driver.sh: Abstract reading test
5035         options into read_src_option function. Read skip, only,
5036         expensive, and xfail via read_src_option. Add timeout and
5037         timeout-factor options and adjust timeout variable accordingly.
5038         * testsuite/experimental/simd/tests/loadstore.cc: Set
5039         timeout-factor 2.
5040
5041 2021-02-03  Matthias Kretz  <kretz@kde.org>
5042
5043         * testsuite/experimental/simd/driver.sh: When handling the pipe
5044         to log (and on verbose to stdout) count the lines. If it exceeds
5045         1000 log the issue and exit 125, which is then handled as a
5046         failure.
5047
5048 2021-02-03  Matthias Kretz  <kretz@kde.org>
5049
5050         * testsuite/experimental/simd/tests/hypot3_fma.cc: Add skip:
5051         markup for long double on powerpc64*.
5052
5053 2021-02-03  Matthias Kretz  <kretz@kde.org>
5054
5055         * include/experimental/bits/simd.h: Add __have_power10vec
5056         conditional on _ARCH_PWR10.
5057         * include/experimental/bits/simd_builtin.h: Forward declare
5058         _MaskImplPpc and use it as _MaskImpl when __ALTIVEC__ is
5059         defined.
5060         (_MaskImplBuiltin::_S_some_of): Call _S_popcount from the
5061         _SuperImpl for optimizations and correctness.
5062         * include/experimental/bits/simd_ppc.h: Add _MaskImplPpc.
5063         (_MaskImplPpc::_S_popcount): Implement via vec_cntm for POWER10.
5064         Otherwise, for >=int use -vec_sums divided by a sizeof factor.
5065         For <int use -vec_sums(vec_sum4s(...)) to sum all mask entries.
5066
5067 2021-02-03  Matthias Kretz  <kretz@kde.org>
5068
5069         * testsuite/experimental/simd/driver.sh: Remove executable on
5070         SIGINT. Process compiler and test executable output: In verbose
5071         mode print messages immediately, limited to 1000 lines and
5072         breaking long lines to below $COLUMNS (or 1024 if not set).
5073         Communicating the exit status of the compiler / test with the
5074         necessary pipe is done via a message through stdout/-in.
5075
5076 2021-02-03  Matthias Kretz  <kretz@kde.org>
5077
5078         * testsuite/Makefile.am: Ensure .simd.summary is empty before
5079         collecting a new summary.
5080         * testsuite/Makefile.in: Regenerate.
5081
5082 2021-02-03  Matthias Kretz  <kretz@kde.org>
5083
5084         * testsuite/experimental/simd/generate_makefile.sh: Use
5085         different variables internally than documented for user
5086         overrides. This makes internal append/prepend work as intended.
5087
5088 2021-02-03  Matthias Kretz  <kretz@kde.org>
5089
5090         * testsuite/experimental/simd/driver.sh (verify_test): Print
5091         test output on run xfail. Do not repeat lines from the log that
5092         were already printed on stdout.
5093         (test_selector): Make the compiler flags pattern usable as a
5094         substring selector.
5095         (toplevel): Trap on SIGINT and remove the log and sum files.
5096         Call timout with --foreground to quickly terminate on SIGINT.
5097         * testsuite/experimental/simd/generate_makefile.sh: Simplify run
5098         targets via target patterns. Default DRIVEROPTS to -v for run
5099         targets. Remove log and sum files after completion of the run
5100         target (so that it's always recompiled).
5101         Place help text into text file for reasonable 'make help'
5102         performance.
5103
5104 2021-02-03  Matthias Kretz  <kretz@kde.org>
5105
5106         * include/experimental/bits/simd.h: Remove unnecessary static
5107         assertion. Allow sizeof(8) integer __intrinsic_type to enable
5108         the necessary mask type.
5109
5110 2021-02-03  Matthias Kretz  <kretz@kde.org>
5111
5112         * include/experimental/bits/simd.h: Let __intrinsic_type<long
5113         double, N> be valid if sizeof(long double) == sizeof(double) and
5114         use a __vector double as member type.
5115
5116 2021-02-03  Matthias Kretz  <kretz@kde.org>
5117
5118         * include/experimental/bits/simd.h (__is_intrinsic_type): New
5119         internal type trait. Alias for __is_vector_type on x86.
5120         (_VectorTraitsImpl): Enable for __intrinsic_type in addition for
5121         __vector_type.
5122         (__intrin_bitcast): Allow casting to & from vector & intrinsic
5123         types.
5124         (__intrinsic_type): Explicitly specialize for NEON intrinsic
5125         vector types.
5126
5127 2021-02-03  Matthias Kretz  <kretz@kde.org>
5128
5129         * testsuite/experimental/simd/driver.sh: Implement skip, only,
5130         expensive, and xfail markers. They can select on type, ABI tag
5131         subset number, target-triplet, and compiler flags.
5132         * testsuite/experimental/simd/generate_makefile.sh: The summary
5133         now includes lines for unexpected passes and expected failures.
5134         If the skip or only markers are only conditional on the type, do
5135         not generate rules for those types.
5136         * testsuite/experimental/simd/tests/abs.cc: Mark test expensive
5137         for ABI tag subsets 1-9.
5138         * testsuite/experimental/simd/tests/algorithms.cc: Ditto.
5139         * testsuite/experimental/simd/tests/broadcast.cc: Ditto.
5140         * testsuite/experimental/simd/tests/casts.cc: Ditto.
5141         * testsuite/experimental/simd/tests/generator.cc: Ditto.
5142         * testsuite/experimental/simd/tests/integer_operators.cc: Ditto.
5143         * testsuite/experimental/simd/tests/loadstore.cc: Ditto.
5144         * testsuite/experimental/simd/tests/mask_broadcast.cc: Ditto.
5145         * testsuite/experimental/simd/tests/mask_conversions.cc: Ditto.
5146         * testsuite/experimental/simd/tests/mask_implicit_cvt.cc: Ditto.
5147         * testsuite/experimental/simd/tests/mask_loadstore.cc: Ditto.
5148         * testsuite/experimental/simd/tests/mask_operator_cvt.cc: Ditto.
5149         * testsuite/experimental/simd/tests/mask_operators.cc: Ditto.
5150         * testsuite/experimental/simd/tests/mask_reductions.cc: Ditto.
5151         * testsuite/experimental/simd/tests/operator_cvt.cc: Ditto.
5152         * testsuite/experimental/simd/tests/operators.cc: Ditto.
5153         * testsuite/experimental/simd/tests/reductions.cc: Ditto.
5154         * testsuite/experimental/simd/tests/simd.cc: Ditto.
5155         * testsuite/experimental/simd/tests/split_concat.cc: Ditto.
5156         * testsuite/experimental/simd/tests/splits.cc: Ditto.
5157         * testsuite/experimental/simd/tests/where.cc: Ditto.
5158         * testsuite/experimental/simd/tests/fpclassify.cc: Ditto. In
5159         addition replace "test only floattypes" marker by unconditional
5160         "float|double|ldouble" only marker.
5161         * testsuite/experimental/simd/tests/frexp.cc: Ditto.
5162         * testsuite/experimental/simd/tests/hypot3_fma.cc: Ditto.
5163         * testsuite/experimental/simd/tests/ldexp_scalbn_scalbln_modf.cc:
5164         Ditto.
5165         * testsuite/experimental/simd/tests/logarithm.cc: Ditto.
5166         * testsuite/experimental/simd/tests/math_1arg.cc: Ditto.
5167         * testsuite/experimental/simd/tests/math_2arg.cc: Ditto.
5168         * testsuite/experimental/simd/tests/remqo.cc: Ditto.
5169         * testsuite/experimental/simd/tests/trigonometric.cc: Ditto.
5170         * testsuite/experimental/simd/tests/trunc_ceil_floor.cc: Ditto.
5171         * testsuite/experimental/simd/tests/sincos.cc: Ditto. In
5172         addition, xfail on run because the reference data is missing.
5173
5174 2021-02-02  Jonathan Wakely  <jwakely@redhat.com>
5175
5176         * doc/xml/manual/status_cxx2011.xml: Remove stray table cell.
5177         * doc/xml/manual/status_cxx2014.xml: Likewise.
5178         * doc/xml/manual/status_cxx2017.xml: Likewise.
5179         * doc/html/manual/status.html: Regenerate.
5180
5181 2021-02-01  François Dumont  <fdumont@gcc.gnu.org>
5182
5183         PR libstdc++/70303
5184         * include/bits/stl_deque.h (std::deque<>::operator-(iterator, iterator)):
5185         Return 0 if both iterators are value-initialized.
5186         * testsuite/23_containers/deque/70303.cc: New test.
5187         * testsuite/23_containers/vector/70303.cc: New test.
5188
5189 2021-02-01  Jonathan Wakely  <jwakely@redhat.com>
5190
5191         * doc/xml/manual/status_cxx2011.xml: Update std::call_once
5192         status.
5193         * doc/xml/manual/status_cxx2014.xml: Likewise.
5194         * doc/xml/manual/status_cxx2017.xml: Likewise. Update
5195         std::from_chars and std::to_chars status. Fix formatting.
5196         * doc/html/manual/status.html: Regenerate.
5197
5198 2021-01-28  Jonathan Wakely  <jwakely@redhat.com>
5199
5200         * include/experimental/bits/numeric_traits.h: Update copyright
5201         dates.
5202         * include/experimental/bits/simd.h: Likewise.
5203         * include/experimental/bits/simd_builtin.h: Likewise.
5204         * include/experimental/bits/simd_converter.h: Likewise.
5205         * include/experimental/bits/simd_detail.h: Likewise.
5206         * include/experimental/bits/simd_fixed_size.h: Likewise.
5207         * include/experimental/bits/simd_math.h: Likewise.
5208         * include/experimental/bits/simd_neon.h: Likewise.
5209         * include/experimental/bits/simd_ppc.h: Likewise.
5210         * include/experimental/bits/simd_scalar.h: Likewise.
5211         * include/experimental/bits/simd_x86.h: Likewise.
5212         * include/experimental/bits/simd_x86_conversions.h: Likewise.
5213         * include/experimental/simd: Likewise.
5214         * testsuite/experimental/simd/*: Likewise.
5215
5216 2021-01-27  Jonathan Wakely  <jwakely@redhat.com>
5217
5218         * doc/xml/manual/status_cxx2017.xml: Replace invalid entity.
5219         * doc/html/*: Regenerate.
5220
5221 2021-01-27  Jonathan Wakely  <jwakely@redhat.com>
5222
5223         * testsuite/experimental/simd/generate_makefile.sh: Use printf
5224         instead of echo when printing escape characters.
5225
5226 2021-01-27  Matthias Kretz  <kretz@kde.org>
5227
5228         * scripts/check_simd: New file. This script is called from the
5229         the check-simd target. It determines a set of compiler flags and
5230         simulator setups for calling generate_makefile.sh and passes the
5231         information back to the check-simd target, which recurses to the
5232         generated Makefiles.
5233         * scripts/create_testsuite_files: Remove files below simd/tests/
5234         from testsuite_files and place them in testsuite_files_simd.
5235         * testsuite/Makefile.am: Add testsuite_files_simd. Add
5236         check-simd target.
5237         * testsuite/Makefile.in: Regenerate.
5238         * testsuite/experimental/simd/driver.sh: New file. This script
5239         compiles and runs a given simd test, logging its output and
5240         status. It uses the timeout command to implement compile and
5241         test timeouts.
5242         * testsuite/experimental/simd/generate_makefile.sh: New file.
5243         This script generates a Makefile which uses driver.sh to compile
5244         and run the tests and collect the logs into a single log file.
5245         * testsuite/experimental/simd/tests/abs.cc: New file. Tests
5246         abs(simd).
5247         * testsuite/experimental/simd/tests/algorithms.cc: New file.
5248         Tests min/max(simd, simd).
5249         * testsuite/experimental/simd/tests/bits/conversions.h: New
5250         file. Contains functions to support tests involving conversions.
5251         * testsuite/experimental/simd/tests/bits/make_vec.h: New file.
5252         Support functions make_mask and make_vec.
5253         * testsuite/experimental/simd/tests/bits/mathreference.h: New
5254         file. Support functions to supply precomputed math function
5255         reference data.
5256         * testsuite/experimental/simd/tests/bits/metahelpers.h: New
5257         file. Support code for SFINAE testing.
5258         * testsuite/experimental/simd/tests/bits/simd_view.h: New file.
5259         * testsuite/experimental/simd/tests/bits/test_values.h: New
5260         file. Test functions to easily drive a test with simd objects
5261         initialized from a given list of values and a range of random
5262         values.
5263         * testsuite/experimental/simd/tests/bits/ulp.h: New file.
5264         Support code to determine the ULP distance of simd objects.
5265         * testsuite/experimental/simd/tests/bits/verify.h: New file.
5266         Test framework for COMPARE'ing simd objects and instantiating
5267         the test templates with value_type and ABI tag.
5268         * testsuite/experimental/simd/tests/broadcast.cc: New file. Test
5269         simd broadcasts.
5270         * testsuite/experimental/simd/tests/casts.cc: New file. Test
5271         simd casts.
5272         * testsuite/experimental/simd/tests/fpclassify.cc: New file.
5273         Test floating-point classification functions.
5274         * testsuite/experimental/simd/tests/frexp.cc: New file. Test
5275         frexp(simd).
5276         * testsuite/experimental/simd/tests/generator.cc: New file. Test
5277         simd generator constructor.
5278         * testsuite/experimental/simd/tests/hypot3_fma.cc: New file.
5279         Test 3-arg hypot(simd,simd,simd) and fma(simd,simd,sim).
5280         * testsuite/experimental/simd/tests/integer_operators.cc: New
5281         file. Test integer operators.
5282         * testsuite/experimental/simd/tests/ldexp_scalbn_scalbln_modf.cc:
5283         New file. Test ldexp(simd), scalbn(simd), scalbln(simd), and
5284         modf(simd).
5285         * testsuite/experimental/simd/tests/loadstore.cc: New file. Test
5286         (converting) simd loads and stores.
5287         * testsuite/experimental/simd/tests/logarithm.cc: New file. Test
5288         log*(simd).
5289         * testsuite/experimental/simd/tests/mask_broadcast.cc: New file.
5290         Test simd_mask broadcasts.
5291         * testsuite/experimental/simd/tests/mask_conversions.cc: New
5292         file. Test simd_mask conversions.
5293         * testsuite/experimental/simd/tests/mask_implicit_cvt.cc: New
5294         file. Test simd_mask implicit conversions.
5295         * testsuite/experimental/simd/tests/mask_loadstore.cc: New file.
5296         Test simd_mask loads and stores.
5297         * testsuite/experimental/simd/tests/mask_operator_cvt.cc: New
5298         file. Test simd_mask operators convert as specified.
5299         * testsuite/experimental/simd/tests/mask_operators.cc: New file.
5300         Test simd_mask compares, subscripts, and negation.
5301         * testsuite/experimental/simd/tests/mask_reductions.cc: New
5302         file. Test simd_mask reductions.
5303         * testsuite/experimental/simd/tests/math_1arg.cc: New file. Test
5304         1-arg math functions on simd.
5305         * testsuite/experimental/simd/tests/math_2arg.cc: New file. Test
5306         2-arg math functions on simd.
5307         * testsuite/experimental/simd/tests/operator_cvt.cc: New file.
5308         Test implicit conversions on simd binary operators behave as
5309         specified.
5310         * testsuite/experimental/simd/tests/operators.cc: New file. Test
5311         simd compares, subscripts, not, unary minus, plus, minus,
5312         multiplies, divides, increment, and decrement.
5313         * testsuite/experimental/simd/tests/reductions.cc: New file.
5314         Test reduce(simd).
5315         * testsuite/experimental/simd/tests/remqo.cc: New file. Test
5316         remqo(simd).
5317         * testsuite/experimental/simd/tests/simd.cc: New file. Basic
5318         sanity checks of simd types.
5319         * testsuite/experimental/simd/tests/sincos.cc: New file. Test
5320         sin(simd) and cos(simd).
5321         * testsuite/experimental/simd/tests/split_concat.cc: New file.
5322         Test split(simd) and concat(simd, simd).
5323         * testsuite/experimental/simd/tests/splits.cc: New file. Test
5324         split(simd_mask).
5325         * testsuite/experimental/simd/tests/trigonometric.cc: New file.
5326         Test remaining trigonometric functions on simd.
5327         * testsuite/experimental/simd/tests/trunc_ceil_floor.cc: New
5328         file. Test trunc(simd), ceil(simd), and floor(simd).
5329         * testsuite/experimental/simd/tests/where.cc: New file. Test
5330         masked operations using where.
5331
5332 2021-01-27  Matthias Kretz  <kretz@kde.org>
5333
5334         * doc/xml/manual/status_cxx2017.xml: Add implementation status
5335         of the Parallelism TS 2. Document implementation-defined types
5336         and behavior.
5337         * include/Makefile.am: Add new headers.
5338         * include/Makefile.in: Regenerate.
5339         * include/experimental/simd: New file. New header for
5340         Parallelism TS 2.
5341         * include/experimental/bits/numeric_traits.h: New file.
5342         Implementation of P1841R1 using internal naming. Addition of
5343         missing IEC559 functionality query.
5344         * include/experimental/bits/simd.h: New file. Definition of the
5345         public simd interfaces and general implementation helpers.
5346         * include/experimental/bits/simd_builtin.h: New file.
5347         Implementation of the _VecBuiltin simd_abi.
5348         * include/experimental/bits/simd_converter.h: New file. Generic
5349         simd conversions.
5350         * include/experimental/bits/simd_detail.h: New file. Internal
5351         macros for the simd implementation.
5352         * include/experimental/bits/simd_fixed_size.h: New file. Simd
5353         fixed_size ABI specific implementations.
5354         * include/experimental/bits/simd_math.h: New file. Math
5355         overloads for simd.
5356         * include/experimental/bits/simd_neon.h: New file. Simd NEON
5357         specific implementations.
5358         * include/experimental/bits/simd_ppc.h: New file. Implement bit
5359         shifts to avoid invalid results for integral types smaller than
5360         int.
5361         * include/experimental/bits/simd_scalar.h: New file. Simd scalar
5362         ABI specific implementations.
5363         * include/experimental/bits/simd_x86.h: New file. Simd x86
5364         specific implementations.
5365         * include/experimental/bits/simd_x86_conversions.h: New file.
5366         x86 specific conversion optimizations. The conversion patterns
5367         work around missing conversion patterns in the compiler and
5368         should be removed as soon as PR85048 is resolved.
5369         * testsuite/experimental/simd/standard_abi_usable.cc: New file.
5370         Test that all (not all fixed_size<N>, though) standard simd and
5371         simd_mask types are usable.
5372         * testsuite/experimental/simd/standard_abi_usable_2.cc: New
5373         file. As above but with -ffast-math.
5374         * testsuite/libstdc++-dg/conformance.exp: Don't build simd tests
5375         from the standard test loop. Instead use
5376         check_vect_support_and_set_flags to build simd tests with the
5377         relevant machine flags.
5378
5379 2021-01-27  Jonathan Wakely  <jwakely@redhat.com>
5380
5381         PR libstdc++/66414
5382         * include/bits/string_view.tcc
5383         (basic_string_view::find(const CharT*, size_type, size_type)):
5384         Optimize.
5385
5386 2021-01-27  Paul Fee  <paul.f.fee@gmail.com>
5387
5388         * include/bits/basic_string.h (basic_string::contains): New
5389         member functions.
5390         * include/std/string_view (basic_string_view::contains):
5391         Likewise.
5392         * include/std/version (__cpp_lib_string_contains): Define.
5393         * testsuite/21_strings/basic_string/operations/starts_with/char/1.cc:
5394         Remove trailing whitespace.
5395         * testsuite/21_strings/basic_string/operations/starts_with/wchar_t/1.cc:
5396         Likewise.
5397         * testsuite/21_strings/basic_string/operations/contains/char/1.cc: New test.
5398         * testsuite/21_strings/basic_string/operations/contains/wchar_t/1.cc: New test.
5399         * testsuite/21_strings/basic_string_view/operations/contains/char/1.cc: New test.
5400         * testsuite/21_strings/basic_string_view/operations/contains/char/2.cc: New test.
5401         * testsuite/21_strings/basic_string_view/operations/contains/wchar_t/1.cc: New test.
5402
5403 2021-01-21  Jonathan Wakely  <jwakely@redhat.com>
5404
5405         * src/c++17/Makefile.in: Regenerate.
5406
5407 2021-01-20  David Edelsohn  <dje.gcc@gmail.com>
5408
5409         * config/os/aix/ctype_inline.h (bool ctype<char>:: is): Cast
5410         _OBJ_DATA subscript to unsigned char. Add _THREAD_SAFE access to
5411         __lc_type.
5412         (const char* ctype<char>:: is): Same.
5413
5414 2021-01-18  Jonathan Wakely  <jwakely@redhat.com>
5415
5416         PR libstdc++/98725
5417         * testsuite/20_util/unique_ptr/io/lwg2948.cc:  Do not try to
5418         write to a wide character stream if wide character support is
5419         disabled in the library.
5420
5421 2021-01-18  Jonathan Wakely  <jwakely@redhat.com>
5422
5423         * testsuite/27_io/basic_stringstream/cons/char/1.cc: Use
5424         stringbuf not wstringbuf.
5425
5426 2021-01-18  Jakub Jelinek  <jakub@redhat.com>
5427
5428         PR debug/98708
5429         * src/c++11/Makefile.am (cxx11-ios_failure-lt.s, cxx11-ios_failure.s):
5430         Compile with -gno-as-loc-support.
5431         * src/c++11/Makefile.in: Regenerated.
5432
5433 2021-01-16  H.J. Lu  <hjl.tools@gmail.com>
5434
5435         * testsuite/29_atomics/atomic_flag/test_and_set/explicit-hle.cc:
5436         Add -fcf-protection=none to -march=i486.
5437
5438 2021-01-14  François Dumont  <fdumont@gcc.gnu.org>
5439
5440         * testsuite/23_containers/deque/debug/98466.cc: Make it pre-C++11
5441         compliant.
5442
5443 2021-01-14  Alexandre Oliva  <oliva@adacore.com>
5444
5445         * testsuite/30_threads/future/members/poll.cc: Calibrate
5446         iteration count.
5447
5448 2021-01-14  François Dumont  <fdumont@gcc.gnu.org>
5449
5450         PR libstdc++/98466
5451         * include/bits/hashtable_policy.h (_Node_iterator_base()): Set _M_cur to nullptr.
5452         (_Node_iterator()): Make default.
5453         (_Node_const_iterator()): Make default.
5454         * include/debug/macros.h (__glibcxx_check_erae_range_after): Add _M_singular
5455         iterator checks.
5456         * include/debug/safe_iterator.h
5457         (_GLIBCXX_DEBUG_VERIFY_OPERANDS): Accept if both iterator are value initialized.
5458         * include/debug/safe_local_iterator.h (_GLIBCXX_DEBUG_VERIFY_OPERANDS):
5459         Likewise.
5460         * include/debug/safe_iterator.tcc (_Safe_iterator<>::_M_valid_range): Add
5461         _M_singular checks on input iterators.
5462         * src/c++11/debug.cc (_Safe_iterator_base::_M_can_compare): Remove _M_singular
5463         checks.
5464         * testsuite/23_containers/deque/debug/98466.cc: New test.
5465         * testsuite/23_containers/unordered_map/debug/98466.cc: New test.
5466
5467 2021-01-14  Jonathan Wakely  <jwakely@redhat.com>
5468
5469         PR libstdc++/98471
5470         * include/bits/fs_path.h (__throw_conversion_error): New
5471         function to throw or abort on character conversion errors.
5472         (__wstr_from_utf8): Move definition after filesystem_error has
5473         been defined. Use __throw_conversion_error.
5474         (path::_S_convert<_EcharT>): Use __throw_conversion_error.
5475         (path::_S_str_convert<_CharT, _Traits, _Allocator>): Likewise.
5476         (path::u8string): Likewise.
5477
5478 2021-01-14  Jonathan Wakely  <jwakely@redhat.com>
5479
5480         * include/std/barrier: Update copyright years. Fix whitespace.
5481         * include/std/version: Fix whitespace.
5482         * testsuite/30_threads/barrier/1.cc: Update copyright years.
5483         * testsuite/30_threads/barrier/2.cc: Likewise.
5484         * testsuite/30_threads/barrier/arrive.cc: Likewise.
5485         * testsuite/30_threads/barrier/arrive_and_drop.cc: Likewise.
5486         * testsuite/30_threads/barrier/arrive_and_wait.cc: Likewise.
5487         * testsuite/30_threads/barrier/completion.cc: Likewise.
5488
5489 2021-01-13  Jonathan Wakely  <jwakely@redhat.com>
5490
5491         * doc/doxygen/user.cfg.in (INPUT): Remove include/debug/array.
5492
5493 2021-01-10  David Edelsohn  <dje.gcc@gmail.com>
5494
5495         PR libstdc++/98613
5496         * testsuite/ext/vstring/cons/moveable.cc: Suppress false positive
5497         warning.
5498         * testsuite/ext/vstring/modifiers/assign/move_assign.cc: Same.
5499
5500 2021-01-08  Olivier Hainque  <hainque@adacore.com>
5501
5502         * testsuite/20_util/bind/ref_neg.cc: Tweak the
5503         dg-prune-output regex for out-of-build-tree contexts.
5504
5505 2021-01-07  Thomas Rodgers  <trodgers@redhat.com>
5506
5507         * doc/doxygen/user.cfg.in: Add new header.
5508         * include/Makefile.am (std_headers): likewise.
5509         * include/Makefile.in: Regenerate.
5510         * include/precompiled/stdc++.h: Add new header.
5511         * include/std/barrier: New file.
5512         * include/std/version: Add __cpp_lib_barrier feature test macro.
5513         * testsuite/30_threads/barrier/1.cc: New test.
5514         * testsuite/30_threads/barrier/2.cc: Likewise.
5515         * testsuite/30_threads/barrier/arrive_and_drop.cc: Likewise.
5516         * testsuite/30_threads/barrier/arrive_and_wait.cc: Likewise.
5517         * testsuite/30_threads/barrier/arrive.cc: Likewise.
5518         * testsuite/30_threads/barrier/completion.cc: Likewise.
5519
5520 2021-01-07  Patrick Palka  <ppalka@redhat.com>
5521
5522         PR libstdc++/98384
5523         * testsuite/20_util/to_chars/long_double.cc: Use nexttowardl
5524         instead of the non-standard nextupl and nextdownl.
5525
5526 2021-01-05  Samuel Thibault  <samuel.thibault@ens-lyon.org>
5527
5528         * configure: Re-generate.
5529
5530 2021-01-05  Ed Smith-Rowland  <3dw4rd@verizon.net>
5531
5532         * include/precompiled/stdc++.h: Add <source_location> to C++20 section.
5533
5534 2021-01-01  Jakub Jelinek  <jakub@redhat.com>
5535
5536         * ChangeLog-2020: Rotate ChangeLog.  New file.
5537
5538 \f
5539 Copyright (C) 2021 Free Software Foundation, Inc.
5540
5541 Copying and distribution of this file, with or without modification,
5542 are permitted in any medium without royalty provided the copyright
5543 notice and this notice are preserved.