libstdc++-v3/ChangeLog

   1 2021-10-22  Jonathan Wakely  <jwakely@redhat.com>
   2
   3         PR libstdc++/102894
   4         * include/std/any (make_any): Add SFINAE constraint.
   5         * testsuite/20_util/any/102894.cc: New test.
   6
   7 2021-10-21  Jonathan Wakely  <jwakely@redhat.com>
   8
   9         * doc/doxygen/stdheader.cc: Refactor. Use C++23. Add new
  10         headers.
  11         * scripts/run_doxygen: Fix post-processing of #include
  12         directives in man pages. Use new xg++ to compile helper program.
  13
  14 2021-10-21  Jonathan Wakely  <jwakely@redhat.com>
  15
  16         * include/bits/mofunc_impl.h: Add doxygen comments.
  17         * include/std/functional: Likewise.
  18
  19 2021-10-21  Jonathan Wakely  <jwakely@redhat.com>
  20
  21         * include/bits/alloc_traits.h: Suppress doxygen documentation.
  22         * include/bits/allocated_ptr.h: Likewise.
  23         * include/bits/enable_special_members.h: Likewise.
  24         * include/bits/hashtable.h: Likewise.
  25         * include/bits/hashtable_policy.h: Likewise.
  26         * include/bits/uses_allocator.h: Likewise.
  27         * include/bits/node_handle.h: Document node handles and suppress
  28         documentation for protected members.
  29         * include/std/any: Suppress documentation for implementation
  30         details.
  31
  32 2021-10-21  Patrick Palka  <ppalka@redhat.com>
  33
  34         PR libstdc++/102358
  35         * include/bits/stl_iterator.h (__niter_base): Make constexpr
  36         for C++20.
  37         (__miter_base): Likewise.
  38         * testsuite/25_algorithms/move/constexpr.cc: New test.
  39
  40 2021-10-21  Patrick Palka  <ppalka@redhat.com>
  41
  42         * include/std/ranges (istream_view): Replace this function
  43         template with an alias template as per P2432R1.
  44         (wistream_view): Define as per P2432R1.
  45         (views::_Istream, views::istream): Likewise.
  46         * testsuite/std/ranges/istream_view.cc (test07): New test.
  47
  48 2021-10-21  Patrick Palka  <ppalka@redhat.com>
  49
  50         * include/bits/ranges_util.h (views::_Drop): Forward declare.
  51         (subrange): Befriend views::_Drop.
  52         (subrange::_S_store_size): Declare constexpr instead of just
  53         const, remove obsolete comment.
  54         * include/std/ranges (views::__detail::__is_empty_view): Define.
  55         (views::__detail::__is_basic_string_view): Likewise.
  56         (views::__detail::__is_subrange): Likewise.
  57         (views::__detail::__is_iota_view): Likewise.
  58         (views::__detail::__can_take_view): Rename template parm _Tp to _Dp.
  59         (views::_Take): Rename template parm _Tp to _Dp, make it non-deducible
  60         and fix it to range_difference_t<_Range>.  Implement P1739R4 and
  61         LWG 3407 changes.
  62         (views::__detail::__can_drop_view): Rename template parm _Tp to _Dp.
  63         (views::_Drop): As with views::_Take.
  64         (views::_Counted): Implement P1739R4 changes.
  65         * include/std/span (__detail::__is_std_span): Rename to ...
  66         (__detail::__is_span): ... this and turn it into a variable
  67         template.
  68         (__detail::__is_std_array): Turn it into a variable template.
  69         (span::span): Adjust uses of __is_std_span and __is_std_array
  70         accordingly.
  71         * testsuite/std/ranges/adaptors/p1739.cc: New test.
  72
  73 2021-10-21  Patrick Palka  <ppalka@redhat.com>
  74
  75         * include/bits/stl_iterator.h (common_iterator::__arrow_proxy):
  76         Make fully constexpr as per LWG 3595.
  77         (common_iterator::__postfix_proxy): Likewise.
  78
  79 2021-10-21  Patrick Palka  <ppalka@redhat.com>
  80
  81         * include/std/ranges (lazy_split_view::base): Add forward_range
  82         constraint as per LWG 3591.
  83         (lazy_split_view::begin, lazy_split_view::end): Also check
  84         simpleness of _Pattern as per LWG 3592.
  85         (split_view::base): Relax copyable constraint as per LWG 3590.
  86
  87 2021-10-21  Patrick Palka  <ppalka@redhat.com>
  88
  89         * include/std/ranges (join_view::__iter_cat::_S_iter_cat): Adjust
  90         criteria for returning bidirectional_iterator_tag as per LWG 3535.
  91         (join_view::_Iterator::_S_iter_concept): Likewise.
  92
  93 2021-10-21  Patrick Palka  <ppalka@redhat.com>
  94
  95         * include/bits/ranges_base.h (viewable_range): Adjust as per
  96         LWG 3481.
  97         * testsuite/std/ranges/adaptors/all.cc (test07): New test.
  98
  99 2021-10-21  Jonathan Wakely  <jwakely@redhat.com>
 100
 101         PR libstdc++/102863
 102         * include/std/optional (optional::and_then, optional::transform):
 103         Remove requires-clause.
 104         * testsuite/20_util/optional/monadic/and_then.cc: Check
 105         overload resolution doesn't cause errors.
 106         * testsuite/20_util/optional/monadic/transform.cc: Likewise.
 107
 108 2021-10-20  Jonathan Wakely  <jwakely@redhat.com>
 109
 110         * testsuite/20_util/optional/monadic/transform.cc: Check that
 111         an rvalue result is not materialized too soon.
 112
 113 2021-10-19  Patrick Palka  <ppalka@redhat.com>
 114
 115         * include/std/ranges (iota_view::_Iterator::operator+): Adjust
 116         definition as per LWG 3580.
 117         (iota_view::_Iterator::operator-): Likewise.
 118
 119 2021-10-19  Patrick Palka  <ppalka@redhat.com>
 120
 121         * include/std/ranges (basic_istream_view::_M_object): Value
 122         initialize as per LWG 3568.
 123
 124 2021-10-19  Patrick Palka  <ppalka@redhat.com>
 125
 126         * include/bits/ranges_util.h
 127         (__detail::__uses_nonqualification_pointer_conversion): Define
 128         and use it ...
 129         (__detail::__convertible_to_nonslicing): ... here, as per LWG 3470.
 130         * testsuite/std/ranges/subrange/1.cc: New test.
 131
 132 2021-10-19  Patrick Palka  <ppalka@redhat.com>
 133
 134         * include/std/ranges (iota_view::_Iterator): Befriend iota_view.
 135         (iota_view::_Sentinel): Likewise.
 136         (iota_view::iota_view): Add three overloads, each taking an
 137         iterator/sentinel pair as per LWG 3523.
 138         * testsuite/std/ranges/iota/iota_view.cc (test06): New test.
 139
 140 2021-10-19  Patrick Palka  <ppalka@redhat.com>
 141
 142         * include/bits/ranges_base.h (view_interface): Forward declare.
 143         (__detail::__is_derived_from_view_interface_fn): Declare.
 144         (__detail::__is_derived_from_view_interface): Define as per LWG 3549.
 145         (enable_view): Adjust as per LWG 3549.
 146         * include/bits/ranges_util.h (view_interface): Don't derive from
 147         view_base.
 148         * include/std/ranges (filter_view): Revert r11-3504 change.
 149         (transform_view): Likewise.
 150         (take_view): Likewise.
 151         (take_while_view): Likewise.
 152         (drop_view): Likewise.
 153         (drop_while_view): Likewise.
 154         (join_view): Likewise.
 155         (lazy_split_view): Likewise.
 156         (split_view): Likewise.
 157         (reverse_view): Likewise.
 158         * testsuite/std/ranges/adaptors/sizeof.cc: Update expected sizes.
 159         * testsuite/std/ranges/view.cc (test_view::test_view): Remove
 160         this default ctor since views no longer need to be default initable.
 161         (test01): New test.
 162
 163 2021-10-19  Jonathan Wakely  <jwakely@redhat.com>
 164
 165         * src/c++11/random.cc (which_source): New helper function.
 166         (random_device::_M_getentropy()): Use which_source and return
 167         suitable values for sources other than device files.
 168         * testsuite/26_numerics/random/random_device/entropy.cc: New test.
 169
 170 2021-10-19  Jonathan Wakely  <jwakely@redhat.com>
 171
 172         * doc/Makefile.am (stamp-html-doxygen, stamp-html-doxygen)
 173         (stamp-latex-doxygen, stamp-man-doxygen): Fix recipes for
 174         relative ${top_srcdir}.
 175         * doc/Makefile.in: Regenerate.
 176
 177 2021-10-19  Jonathan Wakely  <jwakely@redhat.com>
 178
 179         * include/std/variant (_Uninitialized): Use an empty struct
 180         for the unused union member, instead of char.
 181
 182 2021-10-19  Jonathan Wakely  <jwakely@redhat.com>
 183
 184         * include/bits/stl_stack.h (stack(Iterator, Iterator)): Remove
 185         non-deducible template parameter from deduction guide.
 186         * testsuite/23_containers/stack/deduction.cc: Check new C++23
 187         deduction guides.
 188
 189 2021-10-19  Jonathan Wakely  <jwakely@redhat.com>
 190
 191         * include/std/optional (_Optional_payload_base::_Storage): Add
 192         constructor taking a callable function to invoke.
 193         (_Optional_payload_base::_M_apply): New function.
 194         (__cpp_lib_monadic_optional): Define for C++23.
 195         (optional::and_then, optional::transform, optional::or_else):
 196         Define for C++23.
 197         * include/std/ranges (__detail::__cached): Remove.
 198         (__detail::__non_propagating_cache): Remove use of __cached for
 199         contained value. Use _Optional_payload_base::_M_construct and
 200         _Optional_payload_base::_M_apply to set the contained value.
 201         * include/std/version (__cpp_lib_monadic_optional): Define.
 202         * testsuite/20_util/optional/monadic/and_then.cc: New test.
 203         * testsuite/20_util/optional/monadic/or_else.cc: New test.
 204         * testsuite/20_util/optional/monadic/or_else_neg.cc: New test.
 205         * testsuite/20_util/optional/monadic/transform.cc: New test.
 206         * testsuite/20_util/optional/monadic/version.cc: New test.
 207
 208 2021-10-19  Jonathan Wakely  <jwakely@redhat.com>
 209
 210         PR libstdc++/102825
 211         * include/bits/mofunc_impl.h (move_only_function): Remove
 212         invalid base initializer.
 213         * testsuite/20_util/move_only_function/cons.cc: Instantiate
 214         constructors to check bodies.
 215
 216 2021-10-15  Jonathan Wakely  <jwakely@redhat.com>
 217
 218         * include/bits/fs_path.h (path::_S_convert(T)): Avoid recursive
 219         call to function with deduced return type.
 220
 221 2021-10-15  Jonathan Wakely  <jwakely@redhat.com>
 222
 223         * include/bits/basic_string.h (__cpp_lib_string_resize_and_overwrite):
 224         Define for C++23.
 225         (basic_string::resize_and_overwrite): Declare.
 226         * include/bits/basic_string.tcc (basic_string::resize_and_overwrite):
 227         Define.
 228         * include/std/version (__cpp_lib_resize_and_overwrite): Define
 229         for C++23.
 230         * testsuite/21_strings/basic_string/capacity/char/resize_and_overwrite.cc:
 231         New test.
 232
 233 2021-10-15  Jonathan Wakely  <jwakely@redhat.com>
 234
 235         PR libstdc++/101263
 236         * include/std/ranges (__cached): New wrapper struct.
 237         (__non_propagating_cache): Use __cached for contained value.
 238         (__non_propagating_cache::_M_emplace_deref): Add constexpr. Use
 239         std::construct_at instead of placement new.
 240         * testsuite/std/ranges/adaptors/join.cc: Check constexpr works.
 241
 242 2021-10-15  Jonathan Wakely  <jwakely@redhat.com>
 243
 244         * include/std/variant (__cpp_lib_variant): Update value for
 245         C++20.
 246         (__variant_cast, __variant_construct): Add constexpr for C++20.
 247         (__variant_construct_single, __construct_by_index) Likewise. Use
 248         std::_Construct instead of placement new.
 249         (_Uninitialized<T, false>) [__cplusplus >= 202002]: Replace
 250         buffer with a union and define a destructor.
 251         (_Variadic_union) [__cplusplus >= 202002]: Add a specialization
 252         for non-trivial destruction.
 253         (_Variant_storage::__index_of): New helper variable template.
 254         (_Variant_storage::~_Variant_storage()): Add constexpr.
 255         (_Variant_storage::_M_reset()): Likewise.
 256         (_Copy_ctor_base, _Move_ctor_base): Likewise.
 257         (_Copy_assign_base, _Move_assign_base): Likewise.
 258         (variant, swap): Likewise.
 259         * include/std/version (__cpp_lib_variant): Update value for
 260         C++20.
 261         * testsuite/20_util/optional/version.cc: Check for exact value
 262         in C++17.
 263         * testsuite/20_util/variant/87619.cc: Increase timeout for
 264         C++20 mode.
 265         * testsuite/20_util/variant/constexpr.cc: New test.
 266         * testsuite/20_util/variant/version.cc: New test.
 267
 268 2021-10-15  Jonathan Wakely  <jwakely@redhat.com>
 269
 270         * include/std/variant (__detail::__variant::__get_storage):
 271         Remove unused function.
 272         (__variant_construct_by_index): Set index after construction is
 273         complete. Rename to ...
 274         (__detail::__variant::__construct_by_index): ... this.
 275         (variant): Use new name for __variant_construct_by_index friend
 276         declaration. Remove __get_storage friend declaration.
 277         (variant::emplace): Use new name and remove try-blocks.
 278
 279 2021-10-15  Jonathan Wakely  <jwakely@redhat.com>
 280
 281         * include/std/variant (_Variant_storage::_M_storage()): Remove.
 282         (__detail::__variant::__get_storage): Remove.
 283         (variant): Remove friend declaration of __get_storage.
 284
 285 2021-10-15  Jason Merrill  <jason@redhat.com>
 286
 287         * testsuite/20_util/integer_comparisons/greater_equal_neg.cc:
 288         * testsuite/20_util/integer_comparisons/greater_neg.cc:
 289         * testsuite/20_util/integer_comparisons/less_equal_neg.cc:
 290         Adjust expected message.
 291         * testsuite/lib/prune.exp: Prune 'in constexpr expansion'.
 292
 293 2021-10-14  Jonathan Wakely  <jwakely@redhat.com>
 294
 295         * include/std/variant (__variant::__get(in_place_index_t<N>, U&&)):
 296         Rename to __get_n and remove first argument. Replace pair of
 297         overloads with a single function using 'if constexpr'.
 298         (__variant::__get(Variant&&)): Adjust to use __get_n.
 299
 300 2021-10-14  Jonathan Wakely  <jwakely@redhat.com>
 301
 302         * include/bits/fs_path.h (path(path&&)): Make unconditionally
 303         noexcept.
 304         (path::_S_convert(T)): Add condtional noexcept.
 305
 306 2021-10-14  Jonathan Wakely  <jwakely@redhat.com>
 307
 308         PR libstdc++/102743
 309         * include/bits/fs_path.h (path::_S_convert(T)): Fix condition
 310         for returning the same string unchanged.
 311
 312 2021-10-14  Jonathan Wakely  <jwakely@redhat.com>
 313
 314         * include/bits/regex.h: Check __cpp_inline_variables instead of
 315         __cplusplus.
 316
 317 2021-10-14  Jonathan Wakely  <jwakely@redhat.com>
 318
 319         * testsuite/20_util/is_layout_compatible/version.cc: Check
 320         correct macro.
 321
 322 2021-10-14  Jonathan Wakely  <jwakely@redhat.com>
 323
 324         * include/bits/stl_construct.h (_Construct): Use
 325         std::construct_at when constant evaluated.
 326         * include/std/optional (_Storage, _Optional_payload, optional):
 327         Add constexpr as specified by P2231R1.
 328         * include/std/version (__cpp_lib_optional): Update value for
 329         C++20.
 330         * testsuite/20_util/optional/requirements.cc: Check feature test
 331         macro.
 332         * testsuite/20_util/optional/constexpr/assign.cc: New test.
 333         * testsuite/20_util/optional/constexpr/cons/conv.cc: New test.
 334         * testsuite/20_util/optional/constexpr/modifiers.cc: New test.
 335         * testsuite/20_util/optional/constexpr/swap.cc: New test.
 336         * testsuite/20_util/optional/version.cc: New test.
 337
 338 2021-10-13  Jonathan Wakely  <jwakely@redhat.com>
 339
 340         * include/bits/fs_path.h (__detail::__is_contiguous): Add
 341         partial specializations for pointers and __normal_iterator.
 342
 343 2021-10-13  Jonathan Wakely  <jwakely@redhat.com>
 344
 345         * testsuite/27_io/filesystem/path/construct/102592.C: Moved to...
 346         * testsuite/27_io/filesystem/path/construct/102592.cc: ...here.
 347         * testsuite/28_regex/match_results/102667.C: Moved to...
 348         * testsuite/28_regex/match_results/102667.cc: ...here.
 349
 350 2021-10-13  Jonathan Wakely  <jwakely@redhat.com>
 351
 352         * include/bits/fs_path.h (__detail::__is_contiguous): New
 353         variable template to identify contiguous iterators.
 354         (__detail::__unified_char8_t): New alias template to decide when
 355         to treat char8_t as char without encoding conversion.
 356         (__detail::__effective_range(const basic_string<C,T>&)): Use
 357         std::char_traits<C> for returned string view.
 358         (__detail::__effective_range(const basic_string_view<C,T>&)):
 359         Likewise.
 360         (__detail::__effective_range(const Source&)): Use
 361         __is_contiguous to detect mode cases of contiguous iterators.
 362         Use __unified_char8_t to return a std::string instead of
 363         std::u8string.
 364
 365 2021-10-13  Jonathan Wakely  <jwakely@redhat.com>
 366
 367         PR libstdc++/102592
 368         * include/bits/fs_path.h (path::path(Iter, Iter, format))
 369         (path::append(Iter, Iter), path::concat(Iter, Iter)): Call
 370         __string_from_range directly, instead of two-argument overload
 371         of _S_convert.
 372         (path::_S_convert(Iter, Iter)): Remove.
 373         * testsuite/27_io/filesystem/path/construct/102592.C: New test.
 374
 375 2021-10-13  Jonathan Wakely  <jwakely@redhat.com>
 376
 377         * include/bits/c++config (__terminate): Add extern "C++".
 378
 379 2021-10-12  Jonathan Wakely  <jwakely@redhat.com>
 380
 381         * testsuite/20_util/tuple/comparison_operators/overloaded.cc:
 382         Restore test for operator<.
 383         * testsuite/20_util/tuple/comparison_operators/overloaded2.cc:
 384         Adjust expected errors for C++20.
 385
 386 2021-10-12  Jonathan Wakely  <jwakely@redhat.com>
 387
 388         PR libstdc++/101960
 389         * include/std/tuple (_Tuple_impl(_Tuple_impl&&)): Define as
 390         defauled.
 391         * testsuite/20_util/tuple/cons/101960.cc: Check tuples with
 392         array elements before the last element.
 393
 394 2021-10-12  Jonathan Wakely  <jwakely@redhat.com>
 395
 396         * include/bits/stl_iterator_base_funcs.h (__advance): Add
 397         deleted overload to improve diagnostics.
 398         (__distance): Likewise.
 399
 400 2021-10-11  Jonathan Wakely  <jwakely@redhat.com>
 401
 402         * include/bits/atomic_timed_wait.h: Remove unused header.
 403         * include/bits/c++config (std:__terminate): Define.
 404         * include/bits/semaphore_base.h: Remove <exception> and use
 405         __terminate instead of terminate.
 406         * include/bits/std_thread.h: Likewise.
 407         * libsupc++/eh_terminate.cc (std::terminate): Use qualified-id
 408         to call __cxxabiv1::__terminate.
 409
 410 2021-10-11  Jonathan Wakely  <jwakely@redhat.com>
 411
 412         * include/bits/regex.h (basic_regex::assign(Iter, Iter)): Avoid
 413         std::__to_address by using poitner directly or using base()
 414         member of __normal_iterator.
 415
 416 2021-10-11  Jonathan Wakely  <jwakely@redhat.com>
 417
 418         * testsuite/18_support/numeric_limits/lowest.cc: Use
 419         numeric_limits<T>::is_integer instead of is_integral<T>::value.
 420
 421 2021-10-11  Jonathan Wakely  <jwakely@redhat.com>
 422
 423         PR libstdc++/89927
 424         * include/bits/regex.h (basic_regex(const _Ch_type*, size_t)):
 425         Add __glibcxx_requires_string_len assertion.
 426         (basic_regex::assign(InputIterator, InputIterator)): Add
 427         __glibcxx_requires_valid_range assertion.
 428         * include/bits/regex_scanner.tcc (_Scanner::_M_advance())
 429         (_Scanner::_M_scan_normal()): Use string literal in assertions.
 430
 431 2021-10-11  Jonathan Wakely  <jwakely@redhat.com>
 432
 433         PR libstdc++/102667
 434         * include/bits/regex.h (match_result::empty()): Optimize by
 435         calling the base function directly.
 436         (match_results::end()): Check _Base_type::empty() not empty().
 437         * testsuite/28_regex/match_results/102667.C: New test.
 438
 439 2021-10-08  Jonathan Wakely  <jwakely@redhat.com>
 440
 441         PR libstdc++/98725
 442         * testsuite/18_support/numeric_limits/lowest.cc: Remove use of
 443         _GLIBCXX_USE_WCHAR_T.
 444         * testsuite/18_support/numeric_limits/min_max.cc: Replace use of
 445         _GLIBCXX_USE_WCHAR_T with checks for WCHAR_MIN and WCHAR_MAX.
 446         * testsuite/20_util/from_chars/1_neg.cc: Remove use of
 447         _GLIBCXX_USE_WCHAR_T.
 448         * testsuite/20_util/function_objects/searchers.cc: Likewise. Use
 449         char_traits<wchar_t>::length instead of wcslen.
 450         * testsuite/20_util/hash/requirements/explicit_instantiation.cc:
 451         Likewise.
 452         * testsuite/20_util/is_arithmetic/value.cc: Likewise.
 453         * testsuite/20_util/is_compound/value.cc: Likewise.
 454         * testsuite/20_util/is_floating_point/value.cc: Likewise.
 455         * testsuite/20_util/is_fundamental/value.cc: Likewise.
 456         * testsuite/20_util/is_integral/value.cc: Likewise.
 457         * testsuite/20_util/is_signed/value.cc: Likewise.
 458         * testsuite/20_util/is_unsigned/value.cc: Likewise.
 459         * testsuite/20_util/is_void/value.cc: Likewise.
 460         * testsuite/20_util/make_signed/requirements/typedefs-1.cc:
 461         Likewise.
 462         * testsuite/20_util/make_signed/requirements/typedefs-2.cc:
 463         Likewise.
 464         * testsuite/20_util/make_signed/requirements/typedefs-3.cc:
 465         Likewise.
 466         * testsuite/20_util/make_signed/requirements/typedefs-4.cc:
 467         Likewise.
 468         * testsuite/20_util/make_unsigned/requirements/typedefs-1.cc:
 469         Likewise.
 470         * testsuite/20_util/make_unsigned/requirements/typedefs-2.cc:
 471         Likewise.
 472         * testsuite/20_util/make_unsigned/requirements/typedefs-3.cc:
 473         Likewise.
 474         * testsuite/20_util/to_chars/3.cc: Likewise.
 475         * testsuite/20_util/type_identity/requirements/typedefs.cc:
 476         Likewise.
 477         * testsuite/21_strings/basic_string/hash/debug.cc: Likewise.
 478         * testsuite/21_strings/basic_string/hash/hash.cc: Likewise.
 479         * testsuite/21_strings/basic_string/literals/types-char8_t.cc:
 480         Likewise.
 481         * testsuite/21_strings/basic_string/literals/types.cc: Likewise.
 482         * testsuite/21_strings/basic_string/literals/values-char8_t.cc:
 483         Likewise.
 484         * testsuite/21_strings/basic_string/literals/values.cc:
 485         Likewise.
 486         * testsuite/21_strings/basic_string/modifiers/64422.cc:
 487         Likewise.
 488         * testsuite/21_strings/basic_string/range_access/wchar_t/1.cc:
 489         Likewise.
 490         * testsuite/21_strings/basic_string/requirements/citerators.cc:
 491         Likewise.
 492         * testsuite/21_strings/basic_string/requirements/typedefs.cc:
 493         Likewise.
 494         * testsuite/21_strings/basic_string/types/pmr_typedefs.cc:
 495         Likewise.
 496         * testsuite/21_strings/basic_string_view/literals/types-char8_t.cc:
 497         Likewise.
 498         * testsuite/21_strings/basic_string_view/literals/types.cc:
 499         Likewise.
 500         * testsuite/21_strings/basic_string_view/literals/values-char8_t.cc:
 501         Likewise.
 502         * testsuite/21_strings/basic_string_view/literals/values.cc:
 503         Likewise.
 504         * testsuite/21_strings/basic_string_view/requirements/typedefs.cc:
 505         Likewise.
 506         * testsuite/21_strings/basic_string_view/typedefs.cc: Likewise.
 507         * testsuite/21_strings/char_traits/requirements/constexpr_functions.cc:
 508         Likewise.
 509         * testsuite/21_strings/char_traits/requirements/constexpr_functions_c++17.cc:
 510         Likewise.
 511         * testsuite/21_strings/char_traits/requirements/constexpr_functions_c++20.cc:
 512         Likewise.
 513         * testsuite/22_locale/ctype/is/string/89728_neg.cc: Likewise.
 514         * testsuite/25_algorithms/fill/4.cc: Likewise.
 515         * testsuite/25_algorithms/fill_n/1.cc: Likewise.
 516         * testsuite/experimental/functional/searchers.cc: Likewise. Use
 517         char_traits<wchar_t>::length instead of wcslen.
 518         * testsuite/experimental/polymorphic_allocator/pmr_typedefs_string.cc:
 519         Likewise.
 520         * testsuite/experimental/string_view/literals/types-char8_t.cc:
 521         Likewise.
 522         * testsuite/experimental/string_view/literals/types.cc:
 523         Likewise.
 524         * testsuite/experimental/string_view/literals/values-char8_t.cc:
 525         Likewise.
 526         * testsuite/experimental/string_view/literals/values.cc:
 527         Likewise.
 528         * testsuite/experimental/string_view/range_access/wchar_t/1.cc:
 529         Likewise.
 530         * testsuite/experimental/string_view/requirements/typedefs.cc:
 531         Likewise.
 532         * testsuite/experimental/string_view/typedefs.cc: Likewise.
 533         * testsuite/ext/vstring/range_access.cc: Likewise.
 534         * testsuite/std/concepts/concepts.lang/concept.arithmetic/integral.cc:
 535         Likewise.
 536         * testsuite/std/concepts/concepts.lang/concept.arithmetic/signed_integral.cc:
 537         Likewise.
 538         * testsuite/std/concepts/concepts.lang/concept.arithmetic/unsigned_integral.cc:
 539         Likewise.
 540         * testsuite/tr1/4_metaprogramming/is_arithmetic/value.cc:
 541         Likewise.
 542         * testsuite/tr1/4_metaprogramming/is_compound/value.cc:
 543         Likewise.
 544         * testsuite/tr1/4_metaprogramming/is_floating_point/value.cc:
 545         Likewise.
 546         * testsuite/tr1/4_metaprogramming/is_fundamental/value.cc:
 547         Likewise.
 548         * testsuite/tr1/4_metaprogramming/is_integral/value.cc:
 549         Likewise.
 550         * testsuite/tr1/4_metaprogramming/is_signed/value.cc: Likewise.
 551         * testsuite/tr1/4_metaprogramming/is_unsigned/value.cc:
 552         Likewise.
 553         * testsuite/tr1/4_metaprogramming/is_void/value.cc: Likewise.
 554         * testsuite/tr1/6_containers/hash/24799.cc: Likewise.
 555
 556 2021-10-08  Jonathan Wakely  <jwakely@redhat.com>
 557
 558         PR libstdc++/98725
 559         * include/std/ostream (operator<<(basic_ostream<char, Tr>&, wchar_t))
 560         (operator<<(basic_ostream<char, Tr>&, const wchar_t*)): Always
 561         define as deleted. Do not check _GLIBCXX_USE_WCHAR_T.
 562
 563 2021-10-08  Jonathan Wakely  <jwakely@redhat.com>
 564
 565         PR libstdc++/98725
 566         * include/bits/locale_conv.h (wstring_convert, wbuffer_convert):
 567         Define unconditionally. Do not check _GLIBCXX_USE_WCHAR_T.
 568
 569 2021-10-08  Jonathan Wakely  <jwakely@redhat.com>
 570
 571         PR libstdc++/98725
 572         * include/c_global/cstddef [!_GLIBCXX_USE_WCHAR_T]
 573         (__byte_operand<wchar_t>): Define specialization.
 574         * include/std/type_traits (__make_signed<wchar_t>)
 575         (__make_unsigned<wchar_t>): Remove redundant check for
 576         __WCHAR_TYPE__ being defined.
 577         * include/tr1/type_traits [!_GLIBCXX_USE_WCHAR_T]
 578         (__is_integral_helper<wchar_t>): Likewise.
 579
 580 2021-10-08  Jonathan Wakely  <jwakely@redhat.com>
 581
 582         PR libstdc++/98725
 583         * include/ext/rc_string_base.h [!_GLIBCXX_USE_WCHAR_T]
 584         (__rc_string_base<wchar_t>): Define member function.
 585         * include/ext/vstring.h [!_GLIBCXX_USE_WCHAR_T]
 586         (hash<__gnu_cxx::__wvstring>): Define specialization.
 587         * include/ext/vstring_fwd.h [!_GLIBCXX_USE_WCHAR_T] (__wvstring)
 588         (__wsso_string, __wrc_string): Declare typedefs.
 589
 590 2021-10-08  Jonathan Wakely  <jwakely@redhat.com>
 591
 592         PR libstdc++/98725
 593         * include/bits/char_traits.h (char_traits<wchar_t>): Define
 594         explicit specialization unconditionally.
 595         * include/bits/basic_string.h (hash<wstring>): Define
 596         unconditionally. Do not check _GLIBCXX_USE_WCHAR_T.
 597         * include/bits/stringfwd.h (wstring): Likewise.
 598         * include/debug/string (wstring): Likewise.
 599         * include/experimental/string_view (experimental::wstring_view)
 600         (hash<experimental::wstring_view>): Likewise.
 601         * include/std/string (pmr::wstring, hash<pmr::wstring>):
 602         Likewise.
 603         * include/std/string_view (wstring_view, hash<wstring_view>):
 604         Likewise.
 605
 606 2021-10-08  Jonathan Wakely  <jwakely@redhat.com>
 607
 608         * testsuite/27_io/basic_filebuf/close/81256.cc: Moved to...
 609         * testsuite/27_io/basic_filebuf/close/wchar_t/81256.cc: ...here.
 610
 611 2021-10-08  Jonathan Wakely  <jwakely@redhat.com>
 612
 613         * testsuite/22_locale/conversions/buffer/1.cc: Check
 614         _GLIBCXX_USE_WCHAR_T.
 615         * testsuite/22_locale/conversions/buffer/3.cc: Likewise. Add
 616         test using char16_t.
 617         * testsuite/22_locale/conversions/string/1.cc: Check
 618         _GLIBCXX_USE_WCHAR_T.
 619         * testsuite/27_io/filesystem/path/generic/generic_string.cc:
 620         Likewise.
 621         * testsuite/27_io/filesystem/path/modifiers/make_preferred.cc:
 622         Likewise.
 623         * testsuite/27_io/filesystem/path/native/alloc.cc: Likewise.
 624         * testsuite/27_io/filesystem/path/native/string-char8_t.cc:
 625         Likewise.
 626         * testsuite/27_io/filesystem/path/native/string.cc: Likewise.
 627         * testsuite/28_regex/algorithms/regex_match/extended/wstring_locale.cc:
 628         Likewise.
 629         * testsuite/experimental/filesystem/path/generic/generic_string.cc:
 630         Likewise.
 631         * testsuite/experimental/filesystem/path/native/alloc.cc:
 632         Likewise.
 633         * testsuite/experimental/filesystem/path/native/string-char8_t.cc:
 634         Likewise.
 635         * testsuite/experimental/filesystem/path/native/string.cc:
 636         Likewise.
 637
 638 2021-10-08  Jonathan Wakely  <jwakely@redhat.com>
 639
 640         * testsuite/26_numerics/bit/bit.rotate/rotr.cc:
 641         * testsuite/util/testsuite_common_types.h:
 642
 643 2021-10-08  Jonathan Wakely  <jwakely@redhat.com>
 644
 645         * testsuite/18_support/numeric_limits/40856.cc: Replace use of
 646         _GLIBCXX_USE_INT128.
 647         * testsuite/18_support/numeric_limits/dr559.cc: Likewise.
 648         * testsuite/18_support/numeric_limits/lowest.cc: Likewise.
 649         * testsuite/18_support/numeric_limits/max_digits10.cc: Likewise.
 650         * testsuite/20_util/is_floating_point/value.cc: Likewise.
 651         * testsuite/20_util/is_integral/value.cc: Likewise.
 652         * testsuite/20_util/is_signed/value.cc: Likewise.
 653         * testsuite/20_util/is_unsigned/value.cc: Likewise.
 654         * testsuite/20_util/make_signed/requirements/typedefs-1.cc:
 655         Likewise.
 656         * testsuite/20_util/make_signed/requirements/typedefs-2.cc:
 657         Likewise.
 658         * testsuite/20_util/make_unsigned/requirements/typedefs-1.cc:
 659         Likewise.
 660         * testsuite/20_util/make_unsigned/requirements/typedefs-2.cc:
 661         Likewise.
 662         * testsuite/20_util/type_identity/requirements/typedefs.cc:
 663         Likewise.
 664         * testsuite/26_numerics/bit/bit.count/countl_one.cc: Likewise.
 665         * testsuite/26_numerics/bit/bit.count/countl_zero.cc: Likewise.
 666         * testsuite/26_numerics/bit/bit.count/countr_one.cc: Likewise.
 667         * testsuite/26_numerics/bit/bit.count/countr_zero.cc: Likewise.
 668         * testsuite/26_numerics/bit/bit.count/popcount.cc: Likewise.
 669         * testsuite/26_numerics/bit/bit.pow.two/bit_ceil.cc: Likewise.
 670         * testsuite/26_numerics/bit/bit.pow.two/bit_floor.cc: Likewise.
 671         * testsuite/26_numerics/bit/bit.pow.two/bit_width.cc: Likewise.
 672         * testsuite/26_numerics/bit/bit.pow.two/has_single_bit.cc:
 673         Likewise.
 674         * testsuite/26_numerics/bit/bit.rotate/rotl.cc: Likewise.
 675
 676 2021-10-08  Jonathan Wakely  <jwakely@redhat.com>
 677
 678         * include/bits/hashtable_policy.h (_Select1st): Replace use of
 679         std::get.
 680         (_Select2nd): Remove.
 681         (_NodeBuilder::_S_build): Use _NodeGenerator::__node_type
 682         typedef instead of deducing it. Remove unnecessary piecewise
 683         construction.
 684         (_ReuseOrAllocNode): Make __node_type public.
 685         (_Map_base): Adjust partial specialization to be able to extract
 686         the mapped_type without using tuple_element.
 687         (_Map_base::at): Define inline
 688         * testsuite/23_containers/unordered_map/requirements/53339.cc:
 689         Remove XFAIL.
 690         * testsuite/23_containers/unordered_multimap/requirements/53339.cc:
 691         Likewise.
 692
 693 2021-10-08  Jonathan Wakely  <jwakely@redhat.com>
 694
 695         * include/bits/hashtable.h: Move static assertion to destructor.
 696         * include/bits/hashtable_policy.h: Deduce value type from node
 697         type without instantiating it.
 698
 699 2021-10-08  Jonathan Wakely  <jwakely@redhat.com>
 700
 701         * src/c++11/limits.cc: Fail if __cpp_inline_variables is
 702         defined.
 703
 704 2021-10-08  Jonathan Wakely  <jwakely@redhat.com>
 705
 706         PR libstdc++/92546
 707         * include/bits/ranges_algobase.h: Replace <iterator> with a
 708         subset of the headers it includes.
 709
 710 2021-10-08  Jonathan Wakely  <jwakely@redhat.com>
 711
 712         * include/experimental/deque (erase, erase_if): Revert changes
 713         to avoid debug mode overhead.
 714         * include/experimental/map (erase, erase_if): Likewise.
 715         * include/experimental/set (erase, erase_if): Likewise.
 716         * include/experimental/unordered_map (erase, erase_if):
 717         Likewise.
 718         * include/experimental/unordered_set (erase, erase_if):
 719         Likewise.
 720         * include/experimental/vector (erase, erase_if): Likewise.
 721         * include/std/deque (erase, erase_if): Likewise.
 722         * include/std/map (erase, erase_if): Likewise.
 723         * include/std/set (erase, erase_if): Likewise.
 724         * include/std/unordered_map (erase, erase_if): Likewise.
 725         * include/std/unordered_set (erase, erase_if): Likewise.
 726         * include/std/vector (erase, erase_if): Likewise.
 727
 728 2021-10-08  Jonathan Wakely  <jwakely@redhat.com>
 729
 730         * include/std/chrono (__detail::__units_suffix_misc): New
 731         helper function.
 732         (__detail::__units_suffix): Likewise.
 733         (chrono::operator<<(basic_ostream&, const duration&)): Define.
 734         * testsuite/20_util/duration/io.cc: New test.
 735
 736 2021-10-07  Jonathan Wakely  <jwakely@redhat.com>
 737
 738         * include/Makefile.am: Add new header.
 739         * include/Makefile.in: Regenerate.
 740         * include/std/chrono (duration, time_point, system_clock)
 741         (steady_clock, high_resolution_clock, chrono_literals, sys_time)
 742         (file_clock, file_time): Move to ...
 743         * include/bits/chrono.h: New file.
 744         * include/bits/atomic_futex.h: Include new header instead of
 745         <chrono>.
 746         * include/bits/atomic_timed_wait.h: Likewise.
 747         * include/bits/fs_fwd.h: Likewise.
 748         * include/bits/semaphore_base.h: Likewise.
 749         * include/bits/this_thread_sleep.h: Likewise.
 750         * include/bits/unique_lock.h: Likewise.
 751         * include/experimental/bits/fs_fwd.h: Likewise.
 752         * include/experimental/chrono: Likewise.
 753         * include/experimental/io_context: Likewise.
 754         * include/experimental/netfwd: Likewise.
 755         * include/experimental/timer: Likewise.
 756         * include/std/condition_variable: Likewise.
 757         * include/std/mutex: Likewise.
 758         * include/std/shared_mutex: Likewise.
 759
 760 2021-10-07  Jonathan Wakely  <jwakely@redhat.com>
 761
 762         PR libstdc++/102377
 763         * include/bits/atomic_wait.h (__waiter_pool_base:_S_align):
 764         Hardcode to 64 instead of using non-constant constant.
 765
 766 2021-10-07  Jonathan Wakely  <jwakely@redhat.com>
 767
 768         * include/bits/erase_if.h (__erase_nodes_if): Remove redundant
 769         __niter_base calls.
 770         * include/std/string (erase, erase_if): Likewise.
 771         * include/std/deque (erase, erase_if): Access non-debug
 772         container directly.
 773         * include/std/map (erase, erase_if): Likewise.
 774         * include/std/set (erase, erase_if): Likewise.
 775         * include/std/unordered_map (erase, erase_if): Likewise.
 776         * include/std/unordered_set (erase, erase_if): Likewise.
 777         * include/std/vector (erase, erase_if): Likewise.
 778         * include/experimental/deque (erase, erase_if): Likewise.
 779         * include/experimental/map (erase, erase_if): Likewise.
 780         * include/experimental/set (erase, erase_if): Likewise.
 781         * include/experimental/unordered_map (erase, erase_if):
 782         Likewise.
 783         * include/experimental/unordered_set (erase, erase_if):
 784         Likewise.
 785         * include/experimental/vector (erase, erase_if): Likewise.
 786
 787 2021-10-06  Jonathan Wakely  <jwakely@redhat.com>
 788
 789         * include/Makefile.am: Add new headers.
 790         * include/Makefile.in: Regenerate.
 791         * include/std/functional: Include <bits/move_only_function.h>.
 792         * include/std/version (__cpp_lib_move_only_function): Define.
 793         * include/bits/mofunc_impl.h: New file.
 794         * include/bits/move_only_function.h: New file.
 795         * testsuite/20_util/move_only_function/call.cc: New test.
 796         * testsuite/20_util/move_only_function/cons.cc: New test.
 797         * testsuite/20_util/move_only_function/move.cc: New test.
 798         * testsuite/20_util/move_only_function/version.cc: New test.
 799
 800 2021-10-05  Jonathan Wakely  <jwakely@redhat.com>
 801
 802         * testsuite/21_strings/basic_string_view/requirements/trivially_copyable.cc:
 803         New test.
 804         * testsuite/23_containers/span/trivially_copyable.cc: New test.
 805
 806 2021-10-05  Jonathan Wakely  <jwakely@redhat.com>
 807
 808         * include/bits/utility.h (__is_in_place_type_v): Define
 809         variable template to detect in_place_type_t specializations.
 810         (__is_in_place_type): Replace class template with alias
 811         template using __is_in_place_type_v.
 812         * include/std/any (any(T&&)): Check __is_in_place_type first and
 813         avoid instantiating is_copy_constructible unnecessarily.
 814
 815 2021-10-05  Jonathan Wakely  <jwakely@redhat.com>
 816
 817         * testsuite/20_util/integer_comparisons/greater.cc: New test.
 818
 819 2021-10-05  Jonathan Wakely  <jwakely@redhat.com>
 820
 821         * testsuite/27_io/basic_ostream/inserters_other/char/volatile_ptr.cc:
 822         Check result matches non-volatile pointer.
 823
 824 2021-10-05  Jonathan Wakely  <jwakely@redhat.com>
 825
 826         PR c++/102535
 827         * testsuite/20_util/is_trivially_constructible/value.cc: Adjust
 828         expected value for C++20.
 829
 830 2021-10-05  Jonathan Wakely  <jwakely@redhat.com>
 831
 832         * include/bits/std_function.h (_Any_data::_M_access): Add
 833         noexcept.
 834         (_Function_base::_Base_manager::_M_get_pointer): Likewise.
 835         (_Function_base::_Base_manager::_M_not_empty_function):
 836         Likewise.
 837
 838 2021-10-05  Jonathan Wakely  <jwakely@redhat.com>
 839
 840         * include/std/ostream (operator<<(const volatile void*)):
 841         Add new overload, as per P1147R1.
 842         * testsuite/27_io/basic_ostream/inserters_other/char/volatile_ptr.cc:
 843         New test.
 844
 845 2021-10-05  Jonathan Wakely  <jwakely@redhat.com>
 846
 847         * include/bits/stl_queue.h
 848         (__cpp_lib_adaptor_iterator_pair_constructor): Set to correct
 849         value.
 850         * include/bits/stl_stack.h
 851         (__cpp_lib_adaptor_iterator_pair_constructor): Likewise.
 852         * include/std/version
 853         (__cpp_lib_adaptor_iterator_pair_constructor): Likewise.
 854         * testsuite/23_containers/queue/cons_from_iters.cc: Update
 855         expected value.
 856         * testsuite/23_containers/stack/cons_from_iters.cc: Likewise.
 857
 858 2021-10-04  Jonathan Wakely  <jwakely@redhat.com>
 859
 860         * include/bits/forward_list.h (forward_list): Use non-deduced
 861         context for allocator parameter of allocator-extended copy and
 862         move constructors.
 863         * include/bits/stl_bvector.h (vector<bool>): Likewise.
 864         * include/bits/stl_deque.h (deque): Likewise.
 865         * include/bits/stl_list.h (list): Likewise.
 866         * include/bits/stl_map.h (map): Likewise.
 867         * include/bits/stl_multimap.h (multimap): Likewise.
 868         * include/bits/stl_multiset.h (multiset): Likewise.
 869         * include/bits/stl_set.h (set): Likewise.
 870         * include/bits/stl_vector.h (vector): Likewise.
 871         * include/bits/stl_queue.h (queue, priority_queue): Do not
 872         constrain Allocator template parameter of deduction guides that
 873         have a Container parameter.
 874         * include/bits/stl_stack.h (stack): Likewise.
 875         * include/debug/deque (__gnu_debug::deque): Use non-deduced
 876         context for allocator parameter of allocator-extended copy and
 877         move constructors.
 878         * include/debug/list (__gnu_debug::list): Likewise.
 879         * include/debug/map.h (__gnu_debug::map): Likewise.
 880         * include/debug/multimap.h (__gnu_debug::multimap): Likewise.
 881         * include/debug/multiset.h (__gnu_debug::multiset): Likewise.
 882         * include/debug/set.h (__gnu_debug::set): Likewise.
 883         * include/debug/vector (__gnu_debug::vector): Likewise.
 884         * testsuite/23_containers/deque/cons/deduction.cc: Test class
 885         template argument deduction with non-deduced allocator
 886         arguments.
 887         * testsuite/23_containers/forward_list/cons/deduction.cc:
 888         Likewise.
 889         * testsuite/23_containers/list/cons/deduction.cc: Likewise.
 890         * testsuite/23_containers/map/cons/deduction.cc: Likewise.
 891         * testsuite/23_containers/multimap/cons/deduction.cc: Likewise.
 892         * testsuite/23_containers/multiset/cons/deduction.cc: Likewise.
 893         * testsuite/23_containers/priority_queue/deduction.cc: Likewise.
 894         * testsuite/23_containers/queue/deduction.cc: Likewise.
 895         * testsuite/23_containers/set/cons/deduction.cc: Likewise.
 896         * testsuite/23_containers/stack/deduction.cc: Likewise.
 897         * testsuite/23_containers/unordered_map/cons/deduction.cc:
 898         Likewise.
 899         * testsuite/23_containers/unordered_multimap/cons/deduction.cc:
 900         Likewise.
 901         * testsuite/23_containers/unordered_multiset/cons/deduction.cc:
 902         Likewise.
 903         * testsuite/23_containers/unordered_set/cons/deduction.cc:
 904         Likewise.
 905         * testsuite/23_containers/vector/cons/deduction.cc: Likewise.
 906
 907 2021-10-04  Jonathan Wakely  <jwakely@redhat.com>
 908
 909         * include/std/variant (__detail::__variant::__as): Add missing
 910         noexcept to first overload.
 911
 912 2021-10-04  Jonathan Wakely  <jwakely@redhat.com>
 913
 914         * include/bits/basic_string.h (basic_string(nullptr_t)): Define
 915         as deleted.
 916         (operator=(nullptr_t)): Likewise.
 917         * include/bits/cow_string.h (basic_string(nullptr_t)): Likewise.
 918         (operator=(nullptr_t)): Likewise.
 919         * include/std/string_view (basic_string_view(nullptr_t)):
 920         Likewise.
 921         * testsuite/21_strings/basic_string/cons/char/nullptr.cc: New test.
 922         * testsuite/21_strings/basic_string_view/cons/char/nonnull.cc:
 923         Change dg-warning to dg-error.
 924         * testsuite/21_strings/basic_string_view/cons/wchar_t/nonnull.cc:
 925         Likewise.
 926
 927 2021-10-02  Jonathan Wakely  <jwakely@redhat.com>
 928
 929         * src/c++17/fs_ops.cc (create_directory): Fix typo in enum name.
 930         * src/filesystem/ops-common.h (__last_system_error): Add
 931         explicit cast to avoid narrowing conversion.
 932         (do_space): Fix type in function name.
 933
 934 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
 935
 936         PR libstdc++/102100
 937         * include/Makefile.am (c++config.h): Define
 938         _GLIBCXX_VERBOSE_ASSERT based on configure output.
 939         * include/Makefile.in: Regenerate.
 940         * include/bits/c++config: Fix condition for verbose assertions.
 941
 942 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
 943
 944         PR libstdc++/92546
 945         * include/bits/erase_if.h (__erase_nodes_if): Use __niter_base to
 946         unwrap debug iterators.
 947         * include/bits/refwrap.h: Do not error if included in C++03.
 948         * include/bits/stl_algo.h (__remove_if): Move to ...
 949         * include/bits/stl_algobase.h (__remove_if): ... here.
 950         * include/std/deque (erase, erase_if): Use __remove_if instead of
 951         remove and remove_if.
 952         * include/std/string (erase, erase_if): Likewise.
 953         * include/std/vector (erase, erase_if): Likewise.
 954
 955 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
 956
 957         PR libstdc++/66742
 958         * include/bits/list.tcc (list::sort()): Use _Scratch_list
 959         objects for splicing and merging.
 960         (list::sort(StrictWeakOrdering)): Likewise.
 961         * include/bits/stl_list.h (__detail::_Scratch_list): New type.
 962         * src/c++98/list.cc (_List_node_base::_M_transfer): Add
 963         assertion for --enable-libstdcxx-debug library.
 964         * testsuite/23_containers/list/operations/66742.cc: New test.
 965
 966 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
 967
 968         PR libstdc++/100612
 969         * include/std/thread (__pmf_expects_stop_token): New variable
 970         template to detect a pointer to member function that needs a
 971         stop_token to be added to the arguments.
 972         (jthread::__S_create): Use __pmf_expects_stop_token.
 973         (jthread::__S_create_pmf): New function.
 974         * testsuite/30_threads/jthread/100612.cc: New test.
 975
 976 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
 977
 978         * include/bits/stl_queue.h
 979         (__cpp_lib_adaptor_iterator_pair_constructor): Define for C++23, as
 980         per P1425R4.
 981         (queue(InputIterator, InputIterator)): Likewise.
 982         (queue(InputIterator, InputIterator, const Alloc&)): Likewise.
 983         * include/bits/stl_stack.h
 984         (__cpp_lib_adaptor_iterator_pair_constructor): Likewise.
 985         (stack(InputIterator, InputIterator)): Likewise.
 986         (stack(InputIterator, InputIterator, const Alloc&)): Likewise.
 987         * include/std/version (__cpp_lib_adaptor_iterator_pair_constructor):
 988         Define.
 989         * testsuite/23_containers/queue/cons_from_iters.cc: New test.
 990         * testsuite/23_containers/stack/cons_from_iters.cc: New test.
 991
 992 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
 993
 994         * include/bits/stl_queue.h (priority_queue): Add
 995         allocator-extended overloads for constructors taking iterator.
 996         * testsuite/23_containers/priority_queue/lwg3506.cc: New test.
 997
 998 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
 999
1000         * include/bits/stl_queue.h (priority_queue): Construct sequence
1001         from iterators when no sequence argument is present (LWG 3529).
1002         * testsuite/23_containers/priority_queue/lwg3529.cc: New test.
1003
1004 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1005
1006         * include/bits/stl_queue.h (priority_queue): Constrain
1007         constructors with InputIterator parameters (LWG 3522).
1008         * testsuite/23_containers/priority_queue/lwg3522.cc: New test.
1009
1010 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1011
1012         * include/bits/ranges_base.h (ranges::distance): Split overload
1013         into two (LWG 3392).
1014         * testsuite/24_iterators/range_operations/lwg3392.cc: New test.
1015
1016 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1017
1018         * testsuite/30_threads/thread/cons/3.cc: Remove derivation from
1019         std::unary_function.
1020         * testsuite/30_threads/thread/cons/4.cc: Likewise.
1021         * testsuite/30_threads/thread/cons/5.cc: Likewise.
1022
1023 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1024
1025         * testsuite/ext/pb_ds/example/basic_multimap.cc: Remove
1026         unnecesary derivation from std::unary_function.
1027         * testsuite/ext/pb_ds/example/erase_if.cc: Likewise.
1028         * testsuite/ext/pb_ds/example/hash_illegal_resize.cc: Likewise.
1029         * testsuite/ext/pb_ds/example/hash_initial_size.cc: Likewise.
1030         * testsuite/ext/pb_ds/example/hash_load_set_change.cc: Likewise.
1031         * testsuite/ext/pb_ds/example/hash_mod.cc: Likewise.
1032         * testsuite/ext/pb_ds/example/hash_resize.cc: Likewise.
1033         * testsuite/ext/pb_ds/example/hash_shift_mask.cc: Likewise.
1034         * testsuite/ext/pb_ds/example/priority_queue_dijkstra.cc:
1035         Likewise.
1036         * testsuite/ext/pb_ds/example/ranged_hash.cc: Likewise.
1037         * testsuite/ext/pb_ds/example/store_hash.cc: Likewise.
1038
1039 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1040
1041         * src/c++11/functexcept.cc (__throw_out_of_range_fmt): Do not
1042         expand the format string for freestanding, or non-vebose, or if
1043         we're just going to abort anyway.
1044         * src/c++11/snprintf_lite.cc: Remove unused header and
1045         declaration.
1046
1047 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1048
1049         * include/std/variant (__do_visit): Use variant_npos instead of
1050         literal -1 that requires a narrowing conversion.
1051
1052 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1053
1054         PR libstdc++/99327
1055         * src/filesystem/ops-common.h (__unsupported): New function to
1056         return a suitable error code for missing functionality.
1057         (posix::off_t): New typedef.
1058         (posix::*): Set errno to ENOSYS instead of ENOTSUP for no-op
1059         fallback implementations.
1060         (do_copy_file): Replace uses of errc::not_supported.
1061         * src/c++17/fs_ops.cc (fs::copy, fs::copy_file, create_dir)
1062         (fs::create_directory, fs::create_directory_symlink)
1063         (fs::create_hard_link, fs::create_symlink, fs::current_path)
1064         (fs::equivalent, do_stat, fs::file_size, fs::hard_link_count)
1065         (fs::last_write_time, fs::permissions, fs::read_symlink):
1066         Replace uses of errc::not_supported.
1067         (fs::resize_file): Qualify off_t.
1068         * src/filesystem/ops.cc (fs::copy, fs::copy_file, create_dir)
1069         (fs::create_directory, fs::create_directory_symlink)
1070         (fs::create_hard_link, fs::create_symlink, fs::current_path)
1071         (fs::equivalent, do_stat, fs::file_size, fs::last_write_time)
1072         (fs::permissions, fs::read_symlink, fs::system_complete):
1073         Replace uses of errc::not_supported.
1074         (fs::resize_file): Qualify off_t and enable unconditionally.
1075         * testsuite/19_diagnostics/system_error/cons-1.cc: Likewise.
1076
1077 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1078
1079         * src/filesystem/ops-common.h (last_error): New helper function.
1080         (filesystem::do_space): Use last_error().
1081         * src/c++17/fs_ops.cc (fs::absolute, fs::create_hard_link)
1082         (fs::equivalent, fs::remove, fs::temp_directory_path): Use
1083         last_error().
1084         * src/filesystem/ops.cc (fs::create_hard_link)
1085         (fs::remove, fs::temp_directory_path): Likewise.
1086
1087 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1088
1089         * include/std/type_traits (__conditional): New class template
1090         for internal uses of std::conditional.
1091         (__conditional_t): New alias template to replace conditional_t.
1092         (__and_, __or_, __result_of_memfun, __result_of_memobj): Use
1093         __conditional_t instead of conditional::type.
1094         * include/bits/atomic_base.h (__atomic_impl::_Diff): Likewise.
1095         * include/bits/hashtable.h (_Hashtable): Likewise.
1096         * include/bits/hashtable_policy.h (_Node_iterator, _Insert_base)
1097         (_Local_iterator): Likewise. Replace typedefs with
1098         using-declarations.
1099         * include/bits/move.h (move_if_noexcept): Use __conditional_t.
1100         * include/bits/parse_numbers.h (_Select_int_base): Likewise.
1101         * include/bits/ptr_traits.h (__make_not_void): Likewise.
1102         * include/bits/ranges_algobase.h (__copy_or_move_backward)
1103         (__copy_or_move): Likewise.
1104         * include/bits/ranges_base.h (borrowed_iterator_t): Likewise.
1105         * include/bits/ranges_util.h (borrowed_subrange_t): Likewise.
1106         * include/bits/regex_compiler.h (_BracketMatcher): Use
1107         __conditional_t. Replace typedefs with using-declarations.
1108         * include/bits/shared_ptr_base.h (__shared_count): Use
1109         __conditional_t.
1110         * include/bits/stl_algobase.h (__copy_move, __copy_move_backward):
1111         Likewise.
1112         * include/bits/stl_iterator.h (__detail::__clamp_iter_cat)
1113         (reverse_iterator::iterator_concept)
1114         (__make_move_if_noexcept_iterator)
1115         (iterator_traits<common_iterator<_It, _Sent>>)
1116         (iterator_traits<counted_iterator<_It>>): Likewise.
1117         * include/bits/stl_pair.h (_PCC, pair::operator=): Likewise.
1118         * include/bits/stl_tree.h (_Rb_tree::insert_return_type)
1119         (_Rb_tree::_M_clone_node): Likewise.
1120         * include/bits/unique_ptr.h (unique_ptr(unique_ptr<U,E>&&)):
1121         Likewise.
1122         * include/bits/uses_allocator.h (__uses_alloc): Likewise.
1123         (__is_uses_allocator_predicate): Likewise.
1124         * include/debug/functions.h (__foreign_iterator_aux2): Likewise.
1125         * include/experimental/any (any::_Manager, __any_caster):
1126         Likewise.
1127         * include/experimental/executor (async_completion): Likewise.
1128         * include/experimental/functional (__boyer_moore_base_t):
1129         Likewise.
1130         * include/std/any (any::_Manager): Likewise.
1131         * include/std/functional (__boyer_moore_base_t): Likewise.
1132         * include/std/ranges (borrowed_iterator_t)
1133         (borrowed_subrange_t, __detail::__maybe_present_t)
1134         (__detail::__maybe_const_t, split_view): Likewise.
1135         * include/std/tuple (__empty_not_final, tuple::operator=):
1136         Likewise.
1137         * include/std/variant (__detail::__variant::__get_t): Likewise.
1138
1139 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1140
1141         PR libstdc++/78113
1142         * include/std/variant (__do_visit): Use a switch when we have a
1143         single variant with a small number of alternatives.
1144
1145 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1146
1147         PR libstdc++/90943
1148         * include/std/variant (__cpp_lib_variant): Update value.
1149         (__detail::__variant::__as): New helpers implementing the
1150         as-variant exposition-only function templates.
1151         (visit, visit<R>): Use __as to upcast the variant parameters.
1152         * include/std/version (__cpp_lib_variant): Update value.
1153         * testsuite/20_util/variant/visit_inherited.cc: New test.
1154
1155 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1156
1157         * include/bits/stl_iterator.h (__normal_iterator): Simplify
1158         converting constructor and do not require _Container::pointer.
1159
1160 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1161
1162         * include/bits/cow_string.h [_GLIBCXX_FULLY_DYNAMIC_STRING]
1163         (basic_string(basic_string&&)): Add noexcept and avoid
1164         allocation, by sharing rep with the rvalue string.
1165
1166 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1167
1168         * include/bits/stl_iterator.h (common_iterator::__arrow_proxy)
1169         (common_iterator::__postfix_proxy): Add noexcept.
1170
1171 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1172
1173         PR libstdc++/94418
1174         * include/bits/stl_iterator.h (reverse_iterator): Use
1175         conditional noexcept on constructors and assignment operators.
1176         * testsuite/24_iterators/reverse_iterator/noexcept.cc: New test.
1177
1178 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1179
1180         PR libstdc++/100153
1181         * include/bits/vector.tcc (vector<bool>::_M_shrink_to_fit()):
1182         When size() is zero just deallocate and reset.
1183
1184 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1185
1186         PR libstdc++/96733
1187         * include/bits/stl_algo.h (clamp): Use std::min and std::max.
1188
1189 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1190
1191         * include/bits/regex.h (basic_regex::multiline): Define for
1192         non-strict C++11 and C++14 modes.
1193         * include/bits/regex_constants.h (regex_constants::multiline):
1194         Add _GLIBCXX_RESOLVE_LIB_DEFECTS comment.
1195
1196 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1197
1198         * testsuite/25_algorithms/is_permutation/2.cc: Include <iterator>.
1199
1200 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1201
1202         * include/bits/stream_iterator.h (istream_iterator): Add
1203         noexcept to constructors and non-throwing member functions and
1204         friend functions.
1205         (ostream_iterator): Likewise.
1206
1207 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1208
1209         * include/bits/boost_concept_check.h (_Is_vector_bool_iterator):
1210         New trait to identify vector<bool> iterators, including debug
1211         ones.
1212         (_ForwardIteratorReferenceConcept): Add default template
1213         argument using _Is_vector_bool_iterator and use it in partial
1214         specialization for the vector<bool> cases.
1215         (_Mutable_ForwardIteratorReferenceConcept): Likewise.
1216         * testsuite/24_iterators/operations/prev_neg.cc: Adjust dg-error
1217         line number.
1218
1219 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1220
1221         * include/bits/list.tcc (list::merge): Remove call to size() and
1222         try-catch block. Use _Finalize_merge instead.
1223         * include/bits/stl_list.h (list::_Finalize_merge): New
1224         scope guard type to update _M_size members after a merge.
1225
1226 2021-09-30  Jonathan Wakely  <jwakely@redhat.com>
1227
1228         * include/bits/regex.h (basic_regex::multiline): Fix #if
1229         condition.
1230
1231 2021-09-29  Jonathan Wakely  <jwakely@redhat.com>
1232
1233         * include/bits/regex.h (basic_regex::multiline): Define constant
1234         for C++17.
1235         * include/bits/regex_constants.h (regex_constants::multiline):
1236         Define constant for C++17.
1237         (regex_constants::__multiline): Define duplicate constant for
1238         internal use in C++11 and C++14.
1239         * include/bits/regex_executor.h (_Executor::_M_match_multiline()):
1240         New member function.
1241         (_Executor::_M_is_line_terminator(_CharT)): New member function.
1242         (_Executor::_M_at_begin(), _Executor::_M_at_end()): Use new
1243         member functions to support multiline matches.
1244         * testsuite/28_regex/algorithms/regex_match/multiline.cc: New test.
1245
1246 2021-09-29  Jonathan Wakely  <jwakely@redhat.com>
1247
1248         * include/bits/regex_compiler.h (_Compiler::_S_validate): New
1249         function.
1250         * include/bits/regex_compiler.tcc (_Compiler::_Compiler): Use
1251         _S_validate to check flags.
1252         * include/bits/regex_error.h (_S_grammar): New error code for
1253         internal use.
1254         * testsuite/28_regex/basic_regex/ctors/grammar.cc: New test.
1255
1256 2021-09-29  Jonathan Wakely  <jwakely@redhat.com>
1257
1258         PR libstdc++/84110
1259         * include/bits/regex_error.h (regex_constants::_S_null): New
1260         error code for internal use.
1261         * include/bits/regex_scanner.tcc (_Scanner::_M_scan_normal()):
1262         Check for null character.
1263         * testsuite/28_regex/basic_regex/84110.cc: New test.
1264
1265 2021-09-29  Jonathan Wakely  <jwakely@redhat.com>
1266
1267         * include/bits/regex.h (__detail::__is_contiguous_iter): Move
1268         here from <bits/regex_compiler.h>.
1269         (basic_regex::_M_compile): New function to compile an NFA from
1270         a regular expression string.
1271         (basic_regex::basic_regex): Use _M_compile instead of delegating
1272         to other constructors.
1273         (basic_regex::operator=(const basic_regex&)): Define as
1274         defaulted.
1275         (basic_regex::operator=(initializer_list<C>)): Use _M_compile.
1276         (basic_regex::assign(const basic_regex&)): Use copy assignment.
1277         (basic_regex::assign(basic_regex&&)): Use move assignment.
1278         (basic_regex::assign(const C*, flag_type)): Use _M_compile
1279         instead of constructing a temporary string.
1280         (basic_regex::assign(const C*, size_t, flag_type)): Likewise.
1281         (basic_regex::assign(const basic_string<C,T,A>&, flag_type)):
1282         Use _M_compile instead of constructing a temporary basic_regex.
1283         (basic_regex::assign(InputIter, InputIter, flag_type)): Avoid
1284         constructing a temporary string for contiguous iterators of the
1285         right value type.
1286         * include/bits/regex_compiler.h (__is_contiguous_iter): Move to
1287         <bits/regex.h>.
1288         (__enable_if_contiguous_iter, __disable_if_contiguous_iter)
1289         (__compile_nfa): Remove.
1290         * testsuite/28_regex/basic_regex/assign/exception_safety.cc: New
1291         test.
1292         * testsuite/28_regex/basic_regex/ctors/char/other.cc: New test.
1293
1294 2021-09-28  Jonathan Wakely  <jwakely@redhat.com>
1295
1296         * include/bits/atomic_timed_wait.h (__platform_wait_until_impl):
1297         Return false for ETIMEDOUT and true otherwise.
1298
1299 2021-09-28  François Dumont  <fdumont@gcc.gnu.org>
1300
1301         * testsuite/20_util/default_delete/48631_neg.cc: Adapt dg-prune-output message
1302         to also match message with '__8' in it.
1303
1304 2021-09-28  Jonathan Wakely  <jwakely@redhat.com>
1305
1306         * include/bits/regex_automaton.h (_NFA_base::_SizeT): Remove.
1307         * include/bits/regex_compiler.h (_Compiler::_IterT): Remove.
1308         * include/bits/regex_compiler.tcc: Likewise.
1309         * include/bits/regex_scanner.h (_Scanner::_IterT): Remove.
1310         * include/bits/regex_scanner.tcc: Likewise.
1311
1312 2021-09-28  Jonathan Wakely  <jwakely@redhat.com>
1313
1314         * include/bits/regex_compiler.tcc: Add line break in empty while
1315         statement.
1316         * include/bits/regex_executor.tcc: Avoid unused parameter
1317         warning.
1318
1319 2021-09-28  Jonathan Wakely  <jwakely@redhat.com>
1320
1321         * include/bits/regex.h (basic_regex, swap): Add noexcept to
1322         non-throwing functions.
1323         * include/bits/regex_automaton.h (_State_base, _State)
1324         (_NFA_base): Likewise.
1325         * include/bits/regex_compiler.h (_Compiler): Likewise.
1326         * include/bits/regex_error.h (regex_error::code()): Likewise.
1327         * include/bits/regex_scanner.h (_Scanner): Likewise.
1328
1329 2021-09-28  Jonathan Wakely  <jwakely@redhat.com>
1330
1331         * include/bits/atomic_wait.h (_GLIBCXX_HAVE_PLATFORM_WAIT):
1332         Define before first attempt to check it.
1333
1334 2021-09-28  Jonathan Wakely  <jwakely@redhat.com>
1335
1336         * testsuite/23_containers/priority_queue/requirements/explicit_instantiation/1.cc:
1337         Do not check non-default constructible sequences when
1338         _GLIBCXX_CONCEPT_CHECKS is defined.
1339         * testsuite/23_containers/priority_queue/requirements/explicit_instantiation/1_c++98.cc:
1340         Likewise.
1341         * testsuite/23_containers/queue/requirements/explicit_instantiation/1.cc:
1342         Likewise.
1343         * testsuite/23_containers/queue/requirements/explicit_instantiation/1_c++98.cc:
1344         Likewise.
1345         * testsuite/23_containers/stack/requirements/explicit_instantiation/1.cc:
1346         Likewise.
1347         * testsuite/23_containers/stack/requirements/explicit_instantiation/1_c++98.cc:
1348         Likewise.
1349
1350 2021-09-28  Jonathan Wakely  <jwakely@redhat.com>
1351
1352         * testsuite/23_containers/deque/requirements/explicit_instantiation/3.cc:
1353         Do not test implicit allocator rebinding when _GLIBCXX_CONCEPT_CHECKS
1354         is defined.
1355         * testsuite/23_containers/forward_list/requirements/explicit_instantiation/3.cc:
1356         Likewise.
1357         * testsuite/23_containers/list/requirements/explicit_instantiation/3.cc:
1358         Likewise.
1359         * testsuite/23_containers/list/requirements/explicit_instantiation/5.cc:
1360         Likewise.
1361         * testsuite/23_containers/map/requirements/explicit_instantiation/3.cc:
1362         Likewise.
1363         * testsuite/23_containers/map/requirements/explicit_instantiation/5.cc:
1364         Likewise.
1365         * testsuite/23_containers/multimap/requirements/explicit_instantiation/3.cc:
1366         Likewise.
1367         * testsuite/23_containers/multimap/requirements/explicit_instantiation/5.cc:
1368         Likewise.
1369         * testsuite/23_containers/multiset/requirements/explicit_instantiation/3.cc:
1370         Likewise.
1371         * testsuite/23_containers/multiset/requirements/explicit_instantiation/5.cc:
1372         Likewise.
1373         * testsuite/23_containers/set/requirements/explicit_instantiation/3.cc:
1374         Likewise.
1375         * testsuite/23_containers/set/requirements/explicit_instantiation/5.cc:
1376         Likewise.
1377         * testsuite/23_containers/unordered_map/requirements/explicit_instantiation/3.cc:
1378         Likewise.
1379         * testsuite/23_containers/unordered_multimap/requirements/explicit_instantiation/3.cc:
1380         Likewise.
1381         * testsuite/23_containers/unordered_multiset/requirements/explicit_instantiation/3.cc:
1382         Likewise.
1383         * testsuite/23_containers/unordered_set/requirements/explicit_instantiation/3.cc:
1384         Likewise.
1385         * testsuite/23_containers/vector/ext_pointer/explicit_instantiation/3.cc:
1386         Likewise.
1387         * testsuite/23_containers/vector/requirements/explicit_instantiation/3.cc:
1388         Likewise.
1389
1390 2021-09-28  Jonathan Wakely  <jwakely@redhat.com>
1391
1392         * include/bits/boost_concept_check.h (_ForwardIteratorConcept)
1393         (_BidirectionalIteratorConcept, _RandomAccessIteratorConcept):
1394         Check result types of iterator operations.
1395         (_Mutable_ForwardIteratorConcept): Check that iterator's
1396         reference type is a reference to its value type.
1397         (_Mutable_BidirectionalIteratorConcept): Do not require the
1398         value type to be assignable.
1399         (_Mutable_RandomAccessIteratorConcept): Likewise.
1400         * testsuite/24_iterators/operations/prev_neg.cc: Adjust dg-error
1401         line number.
1402
1403 2021-09-28  Jonathan Wakely  <jwakely@redhat.com>
1404
1405         * testsuite/25_algorithms/copy/34595.cc: Add missing operation
1406         for type used as an iterator.
1407         * testsuite/25_algorithms/unique_copy/check_type.cc: Likewise.
1408
1409 2021-09-28  Jonathan Wakely  <jwakely@redhat.com>
1410
1411         * testsuite/20_util/is_nothrow_swappable/value.h: Use custom
1412         comparison function for priority_queue of type with no
1413         relational operators.
1414         * testsuite/20_util/is_swappable/value.h: Likewise.
1415         * testsuite/24_iterators/output/concept.cc: Add operator< to
1416         type used in set.
1417
1418 2021-09-28  Jonathan Wakely  <jwakely@redhat.com>
1419
1420         * include/bits/boost_concept_check.h (_OutputIteratorConcept):
1421         Use a function to preserve value category of the type.
1422         * include/bits/stl_algobase.h (copy, move, fill_n): Use a
1423         reference as the second argument for _OutputIteratorConcept.
1424         (copy_backward, move_backward): Use _OutputIteratorConcept
1425         instead of _ConvertibleConcept.
1426
1427 2021-09-28  Jonathan Wakely  <jwakely@redhat.com>
1428
1429         * include/bits/stl_iterator.h (pointer_traits): Define partial
1430         specialization for __normal_iterator.
1431         * testsuite/24_iterators/normal_iterator/to_address.cc: New test.
1432
1433 2021-09-28  Jonathan Wakely  <jwakely@redhat.com>
1434
1435         * include/bits/move.h (forward(remove_reference_t<T>&&)):
1436         Improve text of static_assert.
1437         * testsuite/20_util/forward/c_neg.cc: Adjust dg-error.
1438         * testsuite/20_util/forward/f_neg.cc: Likewise.
1439
1440 2021-09-28  Jonathan Wakely  <jwakely@redhat.com>
1441
1442         PR libstdc++/102499
1443         * include/bits/fs_path.h (path::begin, path::end): Add noexcept
1444         to declarations, to match definitions.
1445
1446 2021-09-24  Jonathan Wakely  <jwakely@redhat.com>
1447
1448         * include/bits/range_access.h (cbegin, cend): Remove redundant
1449         'inline' specifier.
1450
1451 2021-09-23  Jonathan Wakely  <jwakely@redhat.com>
1452
1453         * testsuite/20_util/specialized_algorithms/memory_management_tools/destroy_neg.cc:
1454         Remove dg-error lines for C++20-only errors.
1455
1456 2021-09-23  Jonathan Wakely  <jwakely@redhat.com>
1457
1458         * testsuite/19_diagnostics/headers/system_error/93151.cc:
1459         Disable PCH.
1460
1461 2021-09-23  Jonathan Wakely  <jwakely@redhat.com>
1462
1463         * src/c++11/system_error.cc (system_error_category) [_WIN32]:
1464         Map Windows error codes to generic POSIX error numbers. Use
1465         FormatMessage instead of strerror.
1466         * testsuite/19_diagnostics/error_category/system_category.cc:
1467         Adjust for new behaviour on Windows.
1468
1469 2021-09-23  Jonathan Wakely  <jwakely@redhat.com>
1470
1471         * src/c++11/system_error.cc (generic_error_category): Define
1472         class and virtual functions as 'final'.
1473         (generic_error_category::equivalent(int, const error_condition&)):
1474         Override.
1475         (system_error_category): Define class and virtual functions as
1476         'final'.
1477         (system_error_category::equivalent(int, const error_condition&)):
1478         Override.
1479         (generic_category_instance, system_category_instance): Use
1480         constinit union to make the objects immortal.
1481
1482 2021-09-23  Jonathan Wakely  <jwakely@redhat.com>
1483
1484         PR libstdc++/102425
1485         * src/c++11/system_error.cc
1486         (system_error_category::default_error_condition): Add 0 to
1487         switch.
1488         * testsuite/19_diagnostics/error_category/102425.cc: New test.
1489
1490 2021-09-17  Jonathan Wakely  <jwakely@redhat.com>
1491
1492         * include/bits/fs_path.h (path::iterator): Add noexcept to all
1493         member functions and friend functions.
1494         (distance): Add noexcept.
1495         (advance): Add noexcept and inline.
1496         * include/experimental/bits/fs_path.h (path::iterator):
1497         Add noexcept to all member functions.
1498
1499 2021-09-17  Jonathan Wakely  <jwakely@redhat.com>
1500
1501         PR libstdc++/102270
1502         * include/std/tuple (_Tuple_impl): Add constexpr to constructor
1503         missed in previous patch.
1504         * testsuite/20_util/tuple/cons/102270.C: Moved to...
1505         * testsuite/20_util/tuple/cons/102270.cc: ...here.
1506         * testsuite/util/testsuite_allocator.h (SimpleAllocator): Add
1507         constexpr to constructor so it can be used for C++20 tests.
1508
1509 2021-09-17  Jonathan Wakely  <jwakely@redhat.com>
1510
1511         * testsuite/26_numerics/valarray/dr630-3.C: Moved to...
1512         * testsuite/26_numerics/valarray/dr630-3.cc: ...here.
1513         * testsuite/27_io/basic_iostream/cons/16251.C: Moved to...
1514         * testsuite/27_io/basic_iostream/cons/16251.cc: ...here.
1515
1516 2021-09-16  Jonathan Wakely  <jwakely@redhat.com>
1517
1518         * src/Makefile.am (stamp-debug): Add all Makefiles as
1519         prerequisites.
1520         * src/Makefile.in: Regenerate.
1521
1522 2021-09-16  Jonathan Wakely  <jwakely@redhat.com>
1523
1524         * testsuite/ext/pb_ds/regression/tree_map_rand.cc: Increase
1525         timeout factor to 3.
1526         * testsuite/ext/pb_ds/regression/tree_set_rand.cc: Likewise.
1527
1528 2021-09-16  Jonathan Wakely  <jwakely@redhat.com>
1529
1530         * doc/xml/manual/using.xml: Generalize to apply to more than
1531         just -std=c++11.
1532         * doc/html/manual/using_macros.html: Regenerate.
1533
1534 2021-09-16  Jonathan Wakely  <jwakely@redhat.com>
1535
1536         * include/std/optional (nullptr_t): Make constructor noexcept.
1537
1538 2021-09-16  Jonathan Wakely  <jwakely@redhat.com>
1539
1540         * include/bits/fs_path.h (advance): Remove non-deducible
1541         template parameter.
1542
1543 2021-09-16  Jonathan Wakely  <jwakely@redhat.com>
1544
1545         PR libstdc++/102270
1546         * include/std/tuple (_Head_base, _Tuple_impl): Add
1547         _GLIBCXX20_CONSTEXPR to allocator-extended constructors.
1548         (tuple<>::swap(tuple&)): Add _GLIBCXX20_CONSTEXPR.
1549         * testsuite/20_util/tuple/cons/102270.C: New test.
1550
1551 2021-09-16  Jonathan Wakely  <jwakely@redhat.com>
1552
1553         PR libstdc++/102280
1554         * include/std/span (span(Range&&)): Add constraint to deduction
1555         guide.
1556
1557 2021-09-16  Jonathan Wakely  <jwakely@redhat.com>
1558
1559         * src/c++98/Makefile.am: Use CXXCOMPILE not LTCXXCOMPILE.
1560         * src/c++98/Makefile.in: Regenerate.
1561
1562 2021-09-16  Jonathan Wakely  <jwakely@redhat.com>
1563
1564         * include/bits/basic_string.h [_GLIBCXX_USE_CXX11_ABI]
1565         (to_string): Add noexcept if the type width is 32 bits or less.
1566
1567 2021-09-16  Jonathan Wakely  <jwakely@redhat.com>
1568
1569         * include/bits/unique_ptr.h (__uniq_ptr_impl::_M_ptr)
1570         (__uniq_ptr_impl::_M_deleter): Add noexcept.
1571
1572 2021-09-16  Thomas Rodgers  <rodgert@twrodgers.com>
1573
1574         PR libstdc++/101761
1575         * testsuite/29_atomics/atomic_ref/wait_notify.cc (test): Use
1576         va and vb as arguments to wait/notify, remove unused bb local.
1577
1578 2021-09-15  Hugo Beauzée-Luyssen  <hugo@beauzee.fr>
1579
1580         * crossconfig.m4: Check for TLS support on mingw.
1581         * configure: Regenerate.
1582
1583 2021-09-13  Jason Merrill  <jason@redhat.com>
1584
1585         * include/std/version: Define __cpp_lib_hardware_interference_size.
1586         * libsupc++/new: Define hardware interference size variables.
1587
1588 2021-09-10  Jonathan Wakely  <jwakely@redhat.com>
1589
1590         * testsuite/experimental/net/internet/resolver/ops/lookup.cc:
1591         Fix invalid hostname to only match the .invalid TLD.
1592
1593 2021-09-02  Jonathan Wakely  <jwakely@redhat.com>
1594
1595         * include/bits/atomic_base.h (__atomic_base<P*>::compare_exchange_weak):
1596         Add new functions.
1597         * include/std/atomic (atomic<T*>::compare_exchange_weak): Use
1598         it.
1599
1600 2021-09-02  Jonathan Wakely  <jwakely@redhat.com>
1601
1602         * include/std/atomic: Tweak whitespace.
1603
1604 2021-09-02  Jonathan Wakely  <jwakely@redhat.com>
1605
1606         PR c++/102177
1607         * include/bits/atomic_base.h (__is_valid_cmpexch_failure_order):
1608         New function to check if a memory order is valid for the failure
1609         case of compare exchange operations.
1610         (__atomic_base<I>::compare_exchange_weak): Simplify assertions
1611         by using __is_valid_cmpexch_failure_order.
1612         (__atomic_base<I>::compare_exchange_strong): Likewise.
1613         (__atomic_base<P*>::compare_exchange_weak): Likewise.
1614         (__atomic_base<P*>::compare_exchange_strong): Likewise.
1615         (__atomic_impl::compare_exchange_weak): Add assertion.
1616         (__atomic_impl::compare_exchange_strong): Likewise.
1617         * include/std/atomic (atomic::compare_exchange_weak): Likewise.
1618         (atomic::compare_exchange_strong): Likewise.
1619
1620 2021-09-02  Jonathan Wakely  <jwakely@redhat.com>
1621
1622         * include/std/functional (invoke_r): Define.
1623         * include/std/version (__cpp_lib_invoke_r): Define.
1624         * testsuite/20_util/function_objects/invoke/version.cc: Check
1625         for __cpp_lib_invoke_r as well as __cpp_lib_invoke.
1626         * testsuite/20_util/function_objects/invoke/4.cc: New test.
1627
1628 2021-08-31  Jonathan Wakely  <jwakely@redhat.com>
1629
1630         PR libstdc++/98421
1631         * include/std/span (span(Iter, size_type), span(Iter, Iter)):
1632         Add valid range checks.
1633         * testsuite/23_containers/span/cons_1_assert_neg.cc: New test.
1634         * testsuite/23_containers/span/cons_2_assert_neg.cc: New test.
1635
1636 2021-08-31  Jonathan Wakely  <jwakely@redhat.com>
1637
1638         * configure.ac: Fix checks for F_GETFL, F_SETFL and O_NONBLOCK.
1639         * configure: Regenerate.
1640
1641 2021-08-31  Jonathan Wakely  <jwakely@redhat.com>
1642
1643         * src/c++11/system_error.cc (error_category::~error_category()):
1644         Remove noexcept-specifier.
1645         (system_error::~system_error()): Likewise.
1646         * testsuite/19_diagnostics/error_category/noexcept.cc: New test.
1647         * testsuite/19_diagnostics/system_error/noexcept.cc: New test.
1648
1649 2021-08-31  Jonathan Wakely  <jwakely@redhat.com>
1650
1651         PR libstdc++/102074
1652         * include/bits/atomic_timed_wait.h (__timed_waiter_pool)
1653         [!_GLIBCXX_HAVE_PLATFORM_TIMED_WAIT]: Add missing return.
1654
1655 2021-08-31  Jonathan Wakely  <jwakely@redhat.com>
1656
1657         * include/experimental/internet (__make_resolver_error_code):
1658         Handle EAI_SYSTEM errors.
1659         (basic_resolver_results): Use __make_resolver_error_code. Use
1660         Glibc NI_MAXHOST and NI_MAXSERV values for buffer sizes.
1661
1662 2021-08-31  Jonathan Wakely  <jwakely@redhat.com>
1663
1664         * testsuite/experimental/net/internet/resolver/ops/lookup.cc:
1665         Try other service if "http" fails.
1666
1667 2021-08-31  Jonathan Wakely  <jwakely@redhat.com>
1668
1669         * testsuite/17_intro/names.cc: Undefine some more names used
1670         by Solaris system headers.
1671
1672 2021-08-30  Jason Merrill  <jason@redhat.com>
1673
1674         PR c++/96286
1675         * testsuite/30_threads/promise/requirements/lwg3466.cc:
1676         Remove dg-prune-outputs.
1677
1678 2021-08-28  Jonathan Wakely  <jwakely@redhat.com>
1679
1680         * include/bits/alloc_traits.h (allocator_traits): Add explicit
1681         specialization for allocator<void>. Improve doxygen comments.
1682         * include/bits/allocator.h (allocator<void>): Restore for the
1683         versioned namespace.
1684         (allocator<void>::construct, allocator<void>::destroy): Remove.
1685         * include/ext/extptr_allocator.h (_Extptr_allocator<void>):
1686         Add default constructor and converting constructor.
1687
1688 2021-08-28  Jonathan Wakely  <jwakely@redhat.com>
1689
1690         * include/bits/stl_uninitialized.h: Fix typo in comment.
1691
1692 2021-08-28  Jonathan Wakely  <jwakely@redhat.com>
1693
1694         PR libstdc++/99876
1695         * src/c++17/fs_ops.cc (fs::absolute): Call non-throwing form,
1696         to avoid unnecessary current_path() call.
1697
1698 2021-08-28  Jonathan Wakely  <jwakely@redhat.com>
1699
1700         * include/bits/std_function.h (function::function(F&&)): Give
1701         name to defaulted template parameter, to improve diagnostics.
1702         Use markdown for more doxygen comments.
1703
1704 2021-08-26  Jonathan Wakely  <jwakely@redhat.com>
1705
1706         * include/bits/std_function.h (function): Adjust doxygen
1707         comments.
1708         * include/bits/unique_ptr.h (make_unique_for_overwrite):
1709         Change parameter name to match doxygen comment.
1710
1711 2021-08-26  Jonathan Wakely  <jwakely@redhat.com>
1712
1713         * include/bits/std_function.h (_function_base::_Base_manager):
1714         Replace _M_init_functor with a function template using a
1715         forwarding reference, and a pair of _M_create function
1716         templates. Reuse _M_create for the clone operation.
1717         (function::_Decay_t): New alias template.
1718         (function::_Callable): Simplify by using _Decay.
1719         (function::function(F)): Change parameter to forwarding
1720         reference, as per LWG 2447. Add noexcept-specifier. Simplify
1721         constraints.
1722         (function::operator=(F&&)): Add noexcept-specifier.
1723         * testsuite/20_util/function/cons/lwg2774.cc: New test.
1724         * testsuite/20_util/function/cons/noexcept.cc: New test.
1725
1726 2021-08-26  Jonathan Wakely  <jwakely@redhat.com>
1727
1728         * include/bits/std_function.h (function::function(F)): Add
1729         static assertions to check constructibility requirements.
1730
1731 2021-08-26  Jonathan Wakely  <jwakely@redhat.com>
1732
1733         PR libstdc++/100285
1734         * configure.ac: Check for O_NONBLOCK.
1735         * configure: Regenerate.
1736         * include/experimental/internet: Include <ws2tcpip.h> for
1737         Windows.  Use preprocessor conditions around more constants.
1738         * include/experimental/socket: Use preprocessor conditions
1739         around more constants.
1740         * testsuite/experimental/net/internet/resolver/base.cc: Only use
1741         constants when the corresponding C macro is defined.
1742         * testsuite/experimental/net/socket/basic_socket.cc: Likewise.
1743         * testsuite/experimental/net/socket/socket_base.cc: Likewise.
1744         Make preprocessor checks more fine-grained.
1745
1746 2021-08-25  Jonathan Wakely  <jwakely@redhat.com>
1747
1748         * testsuite/17_intro/names.cc: Check 'sz'.
1749
1750 2021-08-25  Jonathan Wakely  <jwakely@redhat.com>
1751
1752         * testsuite/17_intro/names.cc: Adjust for Windows.
1753
1754 2021-08-25  Jonathan Wakely  <jwakely@redhat.com>
1755
1756         * include/std/valarray: Uglify 'func' parameters.
1757         * testsuite/17_intro/names.cc: Add 'func' to checks.
1758
1759 2021-08-25  Jonathan Wakely  <jwakely@redhat.com>
1760
1761         PR libstdc++/102064
1762         * include/bits/stl_uninitialized.h (_GLIBCXX_USE_ASSIGN_FOR_INIT):
1763         Define macro to check conditions for optimizing trivial cases.
1764         (__check_constructible): New function to do static assert.
1765         (uninitialized_copy, uninitialized_fill, uninitialized_fill_n):
1766         Use new macro.
1767         * testsuite/20_util/specialized_algorithms/uninitialized_copy/1.cc:
1768         Adjust dg-error pattern.
1769         * testsuite/23_containers/vector/cons/89164.cc: Likewise. Add
1770         C++17-specific checks from 89164_c++17.cc.
1771         * testsuite/23_containers/vector/cons/89164_c++17.cc: Removed.
1772         * testsuite/20_util/specialized_algorithms/uninitialized_copy/102064.cc:
1773         New test.
1774         * testsuite/20_util/specialized_algorithms/uninitialized_copy_n/102064.cc:
1775         New test.
1776         * testsuite/20_util/specialized_algorithms/uninitialized_fill/102064.cc:
1777         New test.
1778         * testsuite/20_util/specialized_algorithms/uninitialized_fill_n/102064.cc:
1779         New test.
1780
1781 2021-08-25  Jonathan Wakely  <jwakely@redhat.com>
1782
1783         PR libstdc++/102048
1784         * include/ext/rope (rope::erase(size_type)): Remove broken
1785         function.
1786
1787 2021-08-24  Jonathan Wakely  <jwakely@redhat.com>
1788
1789         * doc/xml/manual/status_cxx2020.xml: Update table.
1790         * doc/html/manual/status.html: Regenerate.
1791
1792 2021-08-24  Jonathan Wakely  <jwakely@redhat.com>
1793
1794         * include/std/type_traits (is_layout_compatible): Define.
1795         (is_corresponding_member): Define.
1796         * include/std/version (__cpp_lib_is_layout_compatible): Define.
1797         * testsuite/20_util/is_layout_compatible/is_corresponding_member.cc:
1798         New test.
1799         * testsuite/20_util/is_layout_compatible/value.cc: New test.
1800         * testsuite/20_util/is_layout_compatible/version.cc: New test.
1801         * testsuite/20_util/is_pointer_interconvertible/with_class.cc:
1802         New test.
1803         * testsuite/23_containers/span/layout_compat.cc: Do not use real
1804         std::is_layout_compatible trait if available.
1805
1806 2021-08-24  Jonathan Wakely  <jwakely@redhat.com>
1807
1808         * src/c++11/cxx11-shim_facets.cc: Fix mismatched class-key in
1809         explicit instantiation definitions.
1810
1811 2021-08-23  Jonathan Wakely  <jwakely@redhat.com>
1812
1813         * include/std/ranges (basic_istream_view): Add default template
1814         argument.
1815         * testsuite/std/ranges/istream_view.cc: Check it.
1816
1817 2021-08-23  Jonathan Wakely  <jwakely@redhat.com>
1818
1819         * libsupc++/dyncast.cc (__dynamic_cast): Add __builtin_expect to
1820         precondition check.
1821
1822 2021-08-23  Jonathan Wakely  <jwakely@redhat.com>
1823
1824         PR libstdc++/90787
1825         * testsuite/util/testsuite_fs.h (permissions_are_testable):
1826         Define as inline.
1827
1828 2021-08-20  Jonathan Wakely  <jwakely@redhat.com>
1829
1830         PR libstdc++/90787
1831         * testsuite/27_io/filesystem/iterators/directory_iterator.cc:
1832         Use new __gnu_test::permissions_are_testable() function.
1833         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
1834         Likewise.
1835         * testsuite/27_io/filesystem/operations/exists.cc: Likewise.
1836         * testsuite/27_io/filesystem/operations/is_empty.cc: Likewise.
1837         * testsuite/27_io/filesystem/operations/remove.cc: Likewise.
1838         * testsuite/27_io/filesystem/operations/remove_all.cc: Likewise.
1839         * testsuite/27_io/filesystem/operations/status.cc: Likewise.
1840         * testsuite/27_io/filesystem/operations/symlink_status.cc:
1841         Likewise.
1842         * testsuite/27_io/filesystem/operations/temp_directory_path.cc:
1843         Likewise.
1844         * testsuite/experimental/filesystem/iterators/directory_iterator.cc:
1845         Likewise.
1846         * testsuite/experimental/filesystem/iterators/recursive_directory_iterator.cc:
1847         Likewise.
1848         * testsuite/experimental/filesystem/operations/exists.cc:
1849         Likewise.
1850         * testsuite/experimental/filesystem/operations/is_empty.cc:
1851         Likewise.
1852         * testsuite/experimental/filesystem/operations/remove.cc:
1853         Likewise.
1854         * testsuite/experimental/filesystem/operations/remove_all.cc:
1855         Likewise.
1856         * testsuite/experimental/filesystem/operations/temp_directory_path.cc:
1857         Likewise.
1858         * testsuite/util/testsuite_fs.h (__gnu_test::permissions_are_testable):
1859         New function to guess whether testing permissions will work.
1860
1861 2021-08-19  Jonathan Wakely  <jwakely@redhat.com>
1862
1863         * doc/xml/manual/status_cxx2020.xml: Move row  earlier in table.
1864         * doc/html/manual/status.html: Regenerate.
1865
1866 2021-08-19  Jonathan Wakely  <jwakely@redhat.com>
1867
1868         * doc/doxygen/user.cfg.in: Update to Doxygen 1.9.2
1869
1870 2021-08-19  Jonathan Wakely  <jwakely@redhat.com>
1871
1872         PR libstdc++/101965
1873         * include/std/charconv (__to_chars_i): Remove redundant check.
1874
1875 2021-08-19  Jonathan Wakely  <jwakely@redhat.com>
1876
1877         PR libstdc++/101960
1878         * include/std/tuple (_Tuple_impl(_Tuple_impl&&)): Use base
1879         class' move constructor. Define as defaulted for versioned
1880         namespace.
1881         * testsuite/20_util/tuple/cons/101960.cc: New test.
1882
1883 2021-08-19  Jonathan Wakely  <jwakely@redhat.com>
1884
1885         PR libstdc++/100139
1886         * doc/xml/manual/status_cxx2020.xml: Add P1739R4 to status table.
1887         * doc/html/manual/status.html: Regenerate.
1888
1889 2021-08-19  Jonathan Wakely  <jwakely@redhat.com>
1890
1891         * include/bits/shared_ptr.h: Add @since and @headerfile tags.
1892         * include/bits/unique_ptr.h: Add @headerfile tags.
1893
1894 2021-08-19  Jonathan Wakely  <jwakely@redhat.com>
1895
1896         * src/filesystem/ops-common.h (filesystem::file_time): Improve
1897         overflow check by using system_clock::duration::max().
1898
1899 2021-08-19  Jonathan Wakely  <jwakely@redhat.com>
1900
1901         * include/bits/stl_tree.h: Tweak whitespace.
1902
1903 2021-08-18  Jonathan Wakely  <jwakely@redhat.com>
1904
1905         * include/bits/unique_ptr.h (default_delete): Add @since tag.
1906         (unique_ptr, unique_ptr<T[]>): Likewise. Improve @brief.
1907         (make_unique, make_unique_for_overwrite): Likewise. Add @tparam,
1908         @param, and @returns.
1909         (_MakeUniq): Move to __detail namespace. Add alias template
1910         helpers.
1911
1912 2021-08-18  Jonathan Wakely  <jwakely@redhat.com>
1913
1914         * include/bits/stl_function.h: Improve doxygen comments.
1915
1916 2021-08-18  Jonathan Wakely  <jwakely@redhat.com>
1917
1918         * doc/doxygen/user.cfg.in (PREDEFINED): Enable doxygen
1919         processing for C++20 components and components that depend on
1920         compiler features.
1921         * include/bits/stl_algo.h (random_shuffle): Use @deprecated.
1922         * include/std/type_traits: Improve doxygen comments for C++20
1923         traits.
1924
1925 2021-08-18  Jonathan Wakely  <jwakely@redhat.com>
1926
1927         * include/ext/type_traits.h (__promote_2, __promote_3)
1928         (__promote_4): Redfine as alias templates using __promoted_t.
1929         * include/std/complex (__promote_2): Remove partial
1930         specializations for std::complex.
1931
1932 2021-08-18  Jonathan Wakely  <jwakely@redhat.com>
1933
1934         * include/bits/stl_algo.h (min(initializer_list<T>))
1935         (min(initializer_list<T>, Compare)): Call __min_element directly to
1936         avoid redundant debug checks for valid ranges.
1937         (max(initializer_list<T>), max(initializer_list<T>, Compare)):
1938         Likewise, for __max_element.
1939         (minmax(initializer_list<T>), minmax(initializer_list<T>, Compare)):
1940         Likewise, for __minmax_element.
1941
1942 2021-08-18  Jonathan Wakely  <jwakely@redhat.com>
1943
1944         * include/debug/deque (deque(size_type, const T&, const A&)):
1945         Prevent class template argument deduction and replace with a
1946         deduction guide.
1947         * include/debug/forward_list (forward_list(size_type, const T&, const A&)):
1948         Likewise.
1949         * include/debug/list (list(size_type, const T&, const A&)):
1950         Likewise.
1951         * include/debug/vector (vector(size_type, const T&, const A&)):
1952         Likewise.
1953
1954 2021-08-18  Jonathan Wakely  <jwakely@redhat.com>
1955
1956         * python/libstdcxx/v6/printers.py (StdBitReferencePrinter): Use
1957         'std::vector<bool>::reference' as type name, not _Bit_reference.
1958         (build_libstdcxx_dictionary): Register printers for vector<bool>
1959         types in debug mode too.
1960         * testsuite/libstdc++-prettyprinters/simple.cc: Adjust expected
1961         output for invalid _Bit_reference. Use vector<bool>::reference
1962         instead of _Bit_reference.
1963         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
1964
1965 2021-08-17  Thomas Schwinge  <thomas@codesourcery.com>
1966
1967         * testsuite/lib/libstdc++.exp: Avoid illegal argument to verbose,
1968         continued.
1969
1970 2021-08-17  Luc Michel  <lmichel@kalray.eu>
1971             Marc Poulhies  <mpoulhies@kalrayinc.com>
1972
1973         * testsuite/lib/gdb-test.exp (gdb_version_check)
1974         (gdb_version_check_xmethods): Only check the GDB version for
1975         local native targets.
1976
1977 2021-08-17  Antony Polukhin  <antoshkka@gmail.com>
1978             Jonathan Wakely  <jwakely@redhat.com>
1979
1980         * include/bits/random.tcc (seed_seq::seed_seq): Reserve capacity
1981         if distance is O(1).
1982         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
1983         line number.
1984
1985 2021-08-17  Jonathan Wakely  <jwakely@redhat.com>
1986
1987         * testsuite/26_numerics/random/seed_seq/cons/range.cc: Check
1988         construction from input iterators.
1989
1990 2021-08-17  Jonathan Wakely  <jwakely@redhat.com>
1991
1992         * python/libstdcxx/v6/printers.py (StdErrorCatPrinter): Remove.
1993
1994 2021-08-17  Jonathan Wakely  <jwakely@redhat.com>
1995
1996         PR libstdc++/101923
1997         * include/bits/std_function.h (function(function&&)): Check for
1998         non-empty parameter before doing any work.
1999
2000 2021-08-17  Jonathan Wakely  <jwakely@redhat.com>
2001
2002         * include/bits/cow_string.h (basic_string::contains): Do not
2003         define for -std=gnu++20.
2004
2005 2021-08-17  Jonathan Wakely  <jwakely@redhat.com>
2006
2007         * include/bits/ranges_util.h (__not_same_as): Rename to
2008         __different_from.
2009         * include/std/ranges (__not_same_as): Likewise.
2010
2011 2021-08-17  Jonathan Wakely  <jwakely@redhat.com>
2012
2013         * include/std/utility (exchange): Add noexcept-specifier.
2014         * testsuite/20_util/exchange/noexcept.cc: New test.
2015
2016 2021-08-17  Jonathan Wakely  <jwakely@redhat.com>
2017
2018         * python/libstdcxx/v6/printers.py (StdErrorCodePrinter): Define.
2019         (build_libstdcxx_dictionary): Register printer for
2020         std::error_code and std::error_condition.
2021         * testsuite/libstdc++-prettyprinters/cxx11.cc: Test it.
2022
2023 2021-08-16  Jonathan Wakely  <jwakely@redhat.com>
2024
2025         PR libstdc++/101937
2026         * src/c++11/debug.cc (PrintContext::_M_indent): Replace with a
2027         static data member.
2028         (print_word): Use qualified-id to access it.
2029
2030 2021-08-16  Jonathan Wakely  <jwakely@redhat.com>
2031
2032         * python/Makefile.am [GLIBCXX_BUILD_DEBUG] (install-data-local):
2033         Install another copy of the GDB hook.
2034         * python/Makefile.in: Regenerate.
2035
2036 2021-08-12  Jonathan Wakely  <jwakely@redhat.com>
2037
2038         PR libstdc++/101870
2039         * include/c_global/cmath (hypot): Use __promoted_t.
2040         (lerp): Add new overload accepting any arithmetic types.
2041         * include/ext/type_traits.h (__promoted_t): New alias template.
2042         * testsuite/26_numerics/lerp.cc: Moved to...
2043         * testsuite/26_numerics/lerp/1.cc: ...here.
2044         * testsuite/26_numerics/lerp/constexpr.cc: New test.
2045         * testsuite/26_numerics/lerp/version.cc: New test.
2046
2047 2021-08-12  Jonathan Wakely  <jwakely@redhat.com>
2048
2049         * testsuite/26_numerics/lerp.cc: Add header name to #error.
2050         * testsuite/26_numerics/midpoint/integral.cc: Likewise.
2051         * testsuite/26_numerics/midpoint/version.cc: New test.
2052
2053 2021-08-12  Jonathan Wakely  <jwakely@redhat.com>
2054
2055         * include/experimental/random (experimental::randint): Add
2056         nodiscard attribute.
2057
2058 2021-08-12  Jonathan Wakely  <jwakely@redhat.com>
2059
2060         * src/c++98/locale_init.cc: Require C++11.
2061         * src/c++98/localename.cc: Likewise.
2062         * src/c++98/misc-inst.cc: Require C++98.
2063
2064 2021-08-11  Jonathan Wakely  <jwakely@redhat.com>
2065
2066         PR libstdc++/101866
2067         * testsuite/experimental/random/randint.cc: Loop and retry if
2068         reseed() produces the same sequence.
2069
2070 2021-08-11  Jonathan Wakely  <jwakely@redhat.com>
2071
2072         * include/std/type_traits (__cpp_lib_is_pointer_interconvertible)
2073         (is_pointer_interconvertible_base_of_v)
2074         (is_pointer_interconvertible_base_of): Define for C++20.
2075         * include/std/version (__cpp_lib_is_pointer_interconvertible):
2076         Define.
2077         * testsuite/23_containers/span/layout_compat.cc: Use correct
2078         feature test macro for std::is_layout_compatible_v.
2079         * testsuite/20_util/is_pointer_interconvertible/value.cc: New test.
2080         * testsuite/20_util/is_pointer_interconvertible/version.cc: New test.
2081
2082 2021-08-09  Jonathan Wakely  <jwakely@redhat.com>
2083
2084         * include/bits/regex.h (basic_regex::transform_primary): Use
2085         _GLIBCXX_STD_C::vector for local variable.
2086         * include/bits/regex.tcc (__regex_algo_impl): Use reference to
2087         _GLIBCXX_STD_C::vector base class of match_results.
2088         * include/bits/regex_automaton.tcc (_StateSeq:_M_clone): Use
2089         _GLIBCXX_STD_C::map and _GLIBCXX_STD_C::deque for local
2090         variables.
2091         * include/bits/regex_compiler.h (_BracketMatcher): Use
2092         _GLIBCXX_STD_C::vector for data members.
2093         * include/bits/regex_executor.h (_Executor): Likewise.
2094         * include/std/regex [_GLIBCXX_DEBUG]: Include <debug/vector>.
2095
2096 2021-08-09  François Dumont  <fdumont@gcc.gnu.org>
2097
2098         * include/debug/safe_container.h
2099         (_Safe_container(_Safe_container&&, const _Alloc&, std::true_type)): New.
2100         (_Safe_container(_Safe_container&&, const _Alloc&, std::false_type)): New.
2101         (_Safe_container(_Safe_container&&, const _Alloc&)): Use latters.
2102
2103 2021-08-09  Jonathan Wakely  <jwakely@redhat.com>
2104
2105         * testsuite/23_containers/unordered_map/cons/default.cc: Add
2106         equality comparison operators to allocator.
2107         * testsuite/23_containers/unordered_set/cons/default.cc:
2108         Likewise.
2109
2110 2021-08-08  François Dumont  <fdumont@gcc.gnu.org>
2111
2112         * testsuite/25_algorithms/copy/debug/constexpr_neg.cc: Replace 'failed_assertion'
2113         dg-prune-output reason with 'builtin_unreachable'.
2114         * testsuite/25_algorithms/copy_backward/debug/constexpr_neg.cc: Likewise.
2115         * testsuite/25_algorithms/equal/debug/constexpr_neg.cc: Likewise.
2116         * testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_neg.cc: Likewise.
2117         * testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_pred_neg.cc: Likewise.
2118         * testsuite/25_algorithms/lower_bound/debug/constexpr_valid_range_neg.cc: Likewise.
2119         * testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_neg.cc: Likewise.
2120         * testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_pred_neg.cc: Likewise.
2121         * testsuite/25_algorithms/upper_bound/debug/constexpr_valid_range_neg.cc: Likewise.
2122
2123 2021-08-08  Hans-Peter Nilsson  <hp@bitrange.com>
2124
2125         * testsuite/std/ranges/iota/max_size_type.cc: Set
2126         dg-timeout-factor to 4.
2127
2128 2021-08-06  Jonathan Wakely  <jwakely@redhat.com>
2129
2130         * libsupc++/compare (compare_three_way, strong_order)
2131         (weak_order, partial_order, compare_strong_order_fallback)
2132         (compare_weak_order_fallback, compare_partial_order_fallback):
2133         Move nodiscard attributes to correct location.
2134
2135 2021-08-05  Jonathan Wakely  <jwakely@redhat.com>
2136
2137         PR libstdc++/101782
2138         * include/bits/ranges_base.h (ranges::begin, ranges::end)
2139         (ranges::rbegin, ranges::rend, ranges::size, ranges::ssize)
2140         (ranges::empty, ranges::data): Move attribute after the
2141         declarator-id instead of at the end of the declarator.
2142         * include/bits/stl_iterator.h (__gnu_cxx::__normal_iterator):
2143         Move attributes back to the start of the function declarator,
2144         but move the requires-clause to the end.
2145         (common_iterator): Move attribute after the declarator-id.
2146         * include/bits/stl_queue.h (queue): Remove ill-formed attributes
2147         from friend declaration that are not definitions.
2148         * include/std/ranges (views::all, views::filter)
2149         (views::transform, views::take, views::take_while,
2150         views::drop) (views::drop_while, views::join,
2151         views::lazy_split) (views::split, views::counted,
2152         views::common, views::reverse) (views::elements): Move
2153         attributes after the declarator-id.
2154
2155 2021-08-05  Jonathan Wakely  <jwakely@redhat.com>
2156
2157         * libsupc++/compare (partial_ordering, weak_ordering)
2158         (strong_ordering, is_eq, is_neq, is_lt, is_lteq, is_gt, is_gteq)
2159         (compare_three_way, strong_order, weak_order, partial_order)
2160         (compare_strong_order_fallback, compare_weak_order_fallback)
2161         (compare_partial_order_fallback, __detail::__synth3way): Add
2162         nodiscard attribute.
2163         * testsuite/18_support/comparisons/categories/zero_neg.cc: Add
2164         -Wno-unused-result to options.
2165
2166 2021-08-05  Jonathan Wakely  <jwakely@redhat.com>
2167
2168         PR libstdc++/101782
2169         * include/bits/ranges_base.h (ranges::begin, ranges::end)
2170         (ranges::rbegin, ranges::rend, ranges::size, ranges::ssize)
2171         (ranges::empty, ranges::data): Move attribute to the end of
2172         the declarator.
2173         * include/bits/stl_iterator.h (__gnu_cxx::__normal_iterator)
2174         (common_iterator): Likewise for non-member operator functions.
2175         * include/std/ranges (views::all, views::filter)
2176         (views::transform, views::take, views::take_while, views::drop)
2177         (views::drop_while, views::join, views::lazy_split)
2178         (views::split, views::counted, views::common, views::reverse)
2179         (views::elements): Likewise.
2180         * testsuite/std/ranges/access/101782.cc: New test.
2181
2182 2021-08-04  Jonathan Wakely  <jwakely@redhat.com>
2183
2184         * include/bits/forward_list.h: Add [[nodiscard]] to functions
2185         with no side-effects.
2186         * include/bits/stl_bvector.h: Likewise.
2187         * include/bits/stl_deque.h: Likewise.
2188         * include/bits/stl_list.h: Likewise.
2189         * include/bits/stl_queue.h: Likewise.
2190         * include/bits/stl_stack.h: Likewise.
2191         * include/bits/stl_vector.h: Likewise.
2192         * include/debug/deque: Likewise.
2193         * include/debug/forward_list: Likewise.
2194         * include/debug/list: Likewise.
2195         * include/debug/safe_iterator.h: Likewise.
2196         * include/debug/vector: Likewise.
2197         * include/std/array: Likewise.
2198         * testsuite/23_containers/array/creation/3_neg.cc: Use
2199         -Wno-unused-result.
2200         * testsuite/23_containers/array/debug/back1_neg.cc: Cast result
2201         to void.
2202         * testsuite/23_containers/array/debug/back2_neg.cc: Likewise.
2203         * testsuite/23_containers/array/debug/front1_neg.cc: Likewise.
2204         * testsuite/23_containers/array/debug/front2_neg.cc: Likewise.
2205         * testsuite/23_containers/array/debug/square_brackets_operator1_neg.cc:
2206         Likewise.
2207         * testsuite/23_containers/array/debug/square_brackets_operator2_neg.cc:
2208         Likewise.
2209         * testsuite/23_containers/array/tuple_interface/get_neg.cc:
2210         Adjust dg-error line numbers.
2211         * testsuite/23_containers/deque/cons/clear_allocator.cc: Cast
2212         result to void.
2213         * testsuite/23_containers/deque/debug/invalidation/4.cc:
2214         Likewise.
2215         * testsuite/23_containers/deque/types/1.cc: Use
2216         -Wno-unused-result.
2217         * testsuite/23_containers/list/types/1.cc: Cast result to void.
2218         * testsuite/23_containers/priority_queue/members/7161.cc:
2219         Likewise.
2220         * testsuite/23_containers/queue/members/7157.cc: Likewise.
2221         * testsuite/23_containers/vector/59829.cc: Likewise.
2222         * testsuite/23_containers/vector/ext_pointer/types/1.cc:
2223         Likewise.
2224         * testsuite/23_containers/vector/ext_pointer/types/2.cc:
2225         Likewise.
2226         * testsuite/23_containers/vector/types/1.cc: Use
2227         -Wno-unused-result.
2228
2229 2021-08-04  Jonathan Wakely  <jwakely@redhat.com>
2230
2231         * include/bits/iterator_concepts.h (iter_move): Add
2232         [[nodiscard]].
2233         * include/bits/range_access.h (begin, end, cbegin, cend)
2234         (rbegin, rend, crbegin, crend, size, data, ssize): Likewise.
2235         * include/bits/ranges_base.h (ranges::begin, ranges::end)
2236         (ranges::cbegin, ranges::cend, ranges::rbegin, ranges::rend)
2237         (ranges::crbegin, ranges::crend, ranges::size, ranges::ssize)
2238         (ranges::empty, ranges::data, ranges::cdata): Likewise.
2239         * include/bits/stl_iterator.h (reverse_iterator, __normal_iterator)
2240         (back_insert_iterator, front_insert_iterator, insert_iterator)
2241         (move_iterator, move_sentinel, common_iterator)
2242         (counted_iterator): Likewise.
2243         * include/bits/stl_iterator_base_funcs.h (distance, next, prev):
2244         Likewise.
2245         * include/bits/stream_iterator.h (istream_iterator)
2246         (ostream_iterartor): Likewise.
2247         * include/bits/streambuf_iterator.h (istreambuf_iterator)
2248         (ostreambuf_iterator): Likewise.
2249         * include/std/ranges (views::single, views::iota, views::all)
2250         (views::filter, views::transform, views::take, views::take_while)
2251         (views::drop, views::drop_while, views::join, views::lazy_split)
2252         (views::split, views::counted, views::common, views::reverse)
2253         (views::elements): Likewise.
2254         * testsuite/20_util/rel_ops.cc: Use -Wno-unused-result.
2255         * testsuite/24_iterators/move_iterator/greedy_ops.cc: Likewise.
2256         * testsuite/24_iterators/normal_iterator/greedy_ops.cc:
2257         Likewise.
2258         * testsuite/24_iterators/reverse_iterator/2.cc: Likewise.
2259         * testsuite/24_iterators/reverse_iterator/greedy_ops.cc:
2260         Likewise.
2261         * testsuite/21_strings/basic_string/range_access/char/1.cc:
2262         Cast result to void.
2263         * testsuite/21_strings/basic_string/range_access/wchar_t/1.cc:
2264         Likewise.
2265         * testsuite/21_strings/basic_string_view/range_access/char/1.cc:
2266         Likewise.
2267         * testsuite/21_strings/basic_string_view/range_access/wchar_t/1.cc:
2268         Likewise.
2269         * testsuite/23_containers/array/range_access.cc: Likewise.
2270         * testsuite/23_containers/deque/range_access.cc: Likewise.
2271         * testsuite/23_containers/forward_list/range_access.cc:
2272         Likewise.
2273         * testsuite/23_containers/list/range_access.cc: Likewise.
2274         * testsuite/23_containers/map/range_access.cc: Likewise.
2275         * testsuite/23_containers/multimap/range_access.cc: Likewise.
2276         * testsuite/23_containers/multiset/range_access.cc: Likewise.
2277         * testsuite/23_containers/set/range_access.cc: Likewise.
2278         * testsuite/23_containers/unordered_map/range_access.cc:
2279         Likewise.
2280         * testsuite/23_containers/unordered_multimap/range_access.cc:
2281         Likewise.
2282         * testsuite/23_containers/unordered_multiset/range_access.cc:
2283         Likewise.
2284         * testsuite/23_containers/unordered_set/range_access.cc:
2285         Likewise.
2286         * testsuite/23_containers/vector/range_access.cc: Likewise.
2287         * testsuite/24_iterators/customization_points/iter_move.cc:
2288         Likewise.
2289         * testsuite/24_iterators/istream_iterator/sentinel.cc:
2290         Likewise.
2291         * testsuite/24_iterators/istreambuf_iterator/sentinel.cc:
2292         Likewise.
2293         * testsuite/24_iterators/move_iterator/dr2061.cc: Likewise.
2294         * testsuite/24_iterators/operations/prev_neg.cc: Likewise.
2295         * testsuite/24_iterators/ostreambuf_iterator/2.cc: Likewise.
2296         * testsuite/24_iterators/range_access/range_access.cc:
2297         Likewise.
2298         * testsuite/24_iterators/range_operations/100768.cc: Likewise.
2299         * testsuite/26_numerics/valarray/range_access2.cc: Likewise.
2300         * testsuite/28_regex/range_access.cc: Likewise.
2301         * testsuite/experimental/string_view/range_access/char/1.cc:
2302         Likewise.
2303         * testsuite/experimental/string_view/range_access/wchar_t/1.cc:
2304         Likewise.
2305         * testsuite/ext/vstring/range_access.cc: Likewise.
2306         * testsuite/std/ranges/adaptors/take.cc: Likewise.
2307         * testsuite/std/ranges/p2259.cc: Likewise.
2308
2309 2021-08-03  Jonathan Wakely  <jwakely@redhat.com>
2310
2311         * include/bits/random.tcc (linear_congruential_engine): Do not
2312         define static constexpr members when they are implicitly inline.
2313         * include/std/ratio (ratio, __ratio_multiply, __ratio_divide)
2314         (__ratio_add, __ratio_subtract): Likewise.
2315         * include/std/type_traits (integral_constant): Likewise.
2316         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
2317         line number.
2318
2319 2021-08-03  Jonathan Wakely  <jwakely@redhat.com>
2320
2321         * testsuite/util/testsuite_common_types.h: Replace uses of
2322         tr1::unordered_map and tr1::unordered_set with their C++11
2323         equivalents.
2324         * testsuite/29_atomics/atomic/cons/assign_neg.cc: Adjust
2325         dg-error line number.
2326         * testsuite/29_atomics/atomic/cons/copy_neg.cc: Likewise.
2327         * testsuite/29_atomics/atomic_integral/cons/assign_neg.cc:
2328         Likewise.
2329         * testsuite/29_atomics/atomic_integral/cons/copy_neg.cc:
2330         Likewise.
2331         * testsuite/29_atomics/atomic_integral/operators/bitwise_neg.cc:
2332         Likewise.
2333         * testsuite/29_atomics/atomic_integral/operators/decrement_neg.cc:
2334         Likewise.
2335         * testsuite/29_atomics/atomic_integral/operators/increment_neg.cc:
2336         Likewise.
2337
2338 2021-08-03  Jonathan Wakely  <jwakely@redhat.com>
2339
2340         * include/std/memory_resource (polymorphic_allocator::delete_object):
2341         Call destructor directly instead of using destroy.
2342         (allocator_traits<polymorphic_allocator<T>>): Define partial
2343         specialization.
2344
2345 2021-08-03  Jonathan Wakely  <jwakely@redhat.com>
2346
2347         * testsuite/20_util/function_objects/binders/3113.cc: Remove
2348         trailing whitespace.
2349         * testsuite/20_util/shared_ptr/assign/auto_ptr.cc: Likewise.
2350         * testsuite/20_util/shared_ptr/assign/auto_ptr_neg.cc: Likewise.
2351         * testsuite/20_util/shared_ptr/assign/auto_ptr_rvalue.cc:
2352         Likewise.
2353         * testsuite/20_util/shared_ptr/creation/dr925.cc: Likewise.
2354         * testsuite/25_algorithms/headers/algorithm/synopsis.cc:
2355         Likewise.
2356         * testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/2.cc:
2357         Likewise.
2358         * testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/pod.cc:
2359         Likewise.
2360
2361 2021-08-03  Jonathan Wakely  <jwakely@redhat.com>
2362
2363         * doc/xml/manual/evolution.xml: Document deprecation.
2364         * doc/html/*: Regenerate.
2365         * include/bits/c++config (_GLIBCXX14_DEPRECATED): Define.
2366         (_GLIBCXX14_DEPRECATED_SUGGEST): Define.
2367         * include/bits/stl_algo.h (random_shuffle): Deprecate for C++14
2368         and later.
2369         * testsuite/25_algorithms/headers/algorithm/synopsis.cc: Adjust
2370         for C++11 and C++14 changes to std::random_shuffle and
2371         std::shuffle.
2372         * testsuite/25_algorithms/random_shuffle/1.cc: Add options to
2373         use deprecated algorithms.
2374         * testsuite/25_algorithms/random_shuffle/59603.cc: Likewise.
2375         * testsuite/25_algorithms/random_shuffle/moveable.cc: Likewise.
2376         * testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/2.cc:
2377         Likewise.
2378         * testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/pod.cc:
2379         Likewise.
2380
2381 2021-08-03  Jonathan Wakely  <jwakely@redhat.com>
2382
2383         * testsuite/23_containers/forward_list/operations/3.cc:
2384         Use lambda instead of std::bind2nd.
2385         * testsuite/20_util/function_objects/binders/3113.cc: Add
2386         options for testing deprecated features.
2387         * testsuite/20_util/pair/cons/99957.cc: Likewise.
2388         * testsuite/20_util/shared_ptr/assign/auto_ptr.cc: Likewise.
2389         * testsuite/20_util/shared_ptr/assign/auto_ptr_neg.cc: Likewise.
2390         * testsuite/20_util/shared_ptr/assign/auto_ptr_rvalue.cc:
2391         Likewise.
2392         * testsuite/20_util/shared_ptr/cons/43820_neg.cc: Likewise.
2393         * testsuite/20_util/shared_ptr/cons/auto_ptr.cc: Likewise.
2394         * testsuite/20_util/shared_ptr/cons/auto_ptr_neg.cc: Likewise.
2395         * testsuite/20_util/shared_ptr/creation/dr925.cc: Likewise.
2396         * testsuite/20_util/unique_ptr/cons/auto_ptr.cc: Likewise.
2397         * testsuite/20_util/unique_ptr/cons/auto_ptr_neg.cc: Likewise.
2398         * testsuite/ext/pb_ds/example/priority_queue_erase_if.cc:
2399         Likewise.
2400         * testsuite/ext/pb_ds/example/priority_queue_split_join.cc:
2401         Likewise.
2402         * testsuite/lib/dg-options.exp (dg_add_options_using-deprecated):
2403         New proc.
2404
2405 2021-08-03  Jonathan Wakely  <jwakely@redhat.com>
2406
2407         * include/bits/regex_executor.h (_State_info): Replace
2408         unique_ptr<bool[]> with array of bool.
2409         * include/bits/regex_executor.tcc: Likewise.
2410         * include/bits/regex_scanner.tcc: Replace std::strchr with
2411         __builtin_strchr.
2412         * include/std/regex: Replace standard headers with smaller
2413         internal ones.
2414         * testsuite/28_regex/traits/char/lookup_classname.cc: Include
2415         <string.h> for strlen.
2416         * testsuite/28_regex/traits/char/lookup_collatename.cc:
2417         Likewise.
2418
2419 2021-08-03  Jonathan Wakely  <jwakely@redhat.com>
2420
2421         * include/bits/locale_conv.h (__detail::_Scoped_ptr): Define new
2422         RAII class template.
2423         (wstring_convert, wbuffer_convert): Use __detail::_Scoped_ptr
2424         instead of unique_ptr.
2425
2426 2021-08-02  Patrick Palka  <ppalka@redhat.com>
2427
2428         PR libstdc++/101599
2429         * include/bits/ranges_algo.h (__reverse_copy_fn::operator()):
2430         Add missing std::move in return statement.
2431         (__partition_copy_fn::operator()): Rename templtae parameter
2432         _O2 to _Out2.  Uglify function parameters out_true and out_false.
2433         * include/bits/ranges_algobase.h (__copy_or_move): Add missing
2434         std::move to recursive call that unwraps a __normal_iterator
2435         output iterator.
2436         * testsuite/25_algorithms/copy/constrained.cc (test06): New test.
2437         * testsuite/25_algorithms/move/constrained.cc (test05): New test.
2438
2439 2021-08-02  Patrick Palka  <ppalka@redhat.com>
2440
2441         PR libstdc++/101589
2442         * include/std/ranges (lazy_split_view::_InnerIter::base): Make
2443         the const& overload unconstrained and return a const reference
2444         as per LWG 3533.  Make unconditionally noexcept.
2445         (elements_view::base): Revert accidental r12-569 change.
2446         (elements_view::_Iterator::base): Make the const& overload
2447         unconstrained and return a const reference as per LWG 3533.
2448         Make unconditionally noexcept.
2449
2450 2021-08-02  Patrick Palka  <ppalka@redhat.com>
2451
2452         PR libstdc++/101483
2453         * include/std/ranges (join_view::_Iterator::_Iterator): Add
2454         missing std::move.
2455
2456 2021-08-02  Jonathan Wakely  <jwakely@redhat.com>
2457
2458         PR libstdc++/101709
2459         * src/filesystem/ops-common.h (get_temp_directory_from_env):
2460         Add error_code parameter.
2461         * src/c++17/fs_ops.cc (fs::temp_directory_path): Pass error_code
2462         argument to get_temp_directory_from_env and check it.
2463         * src/filesystem/ops.cc (fs::temp_directory_path): Likewise.
2464
2465 2021-08-02  Jonathan Wakely  <jwakely@redhat.com>
2466
2467         * testsuite/20_util/tuple/comparison_operators/overloaded2.cc:
2468         Add dg-error for c++11_only target.
2469
2470 2021-07-30  Jonathan Wakely  <jwakely@redhat.com>
2471
2472         PR libstdc++/65018
2473         * configure.ac: Check for secure_getenv.
2474         * config.h.in: Regenerate.
2475         * configure: Regenerate.
2476         * src/filesystem/ops-common.h (get_temp_directory_from_env): New
2477         helper function to obtain path from the environment.
2478         * src/c++17/fs_ops.cc (fs::temp_directory_path): Use new helper.
2479         * src/filesystem/ops.cc (fs::temp_directory_path): Likewise.
2480         * testsuite/27_io/filesystem/operations/temp_directory_path.cc:
2481         Print messages if test cannot be run.
2482         * testsuite/experimental/filesystem/operations/temp_directory_path.cc:
2483         Likewise. Fix incorrect condition. Use "TMP" to work with
2484         Windows as well as POSIX.
2485
2486 2021-07-29  Hans-Peter Nilsson  <hp@bitrange.com>
2487
2488         * src/c++17/memory_resource.cc: Use __exchange instead
2489         of std::exchange.
2490
2491 2021-07-27  Jonathan Wakely  <jwakely@redhat.com>
2492
2493         * include/experimental/optional (__throw_bad_optional_access):
2494         Replace GNU attribute with C++11 attribute.
2495         (optional::value, optional::value_or): Use if statements
2496         instead of conditional expressions.
2497         * include/std/optional (__throw_bad_optional_access)
2498         (optional::value, optional::value_or): Likewise.
2499
2500 2021-07-27  Marek Polacek  <polacek@redhat.com>
2501
2502         DR 1512
2503         PR c++/99701
2504         * testsuite/20_util/tuple/comparison_operators/overloaded.cc:
2505         Move a line...
2506         * testsuite/20_util/tuple/comparison_operators/overloaded2.cc:
2507         ...here.  New test.
2508
2509 2021-07-27  Jonathan Wakely  <jwakely@redhat.com>
2510
2511         * include/bits/cow_string.h: Consistently use tab for
2512         indentation.
2513
2514 2021-07-27  Jonathan Wakely  <jwakely@redhat.com>
2515
2516         * include/Makefile.am: Add new header.
2517         * include/Makefile.in: Regenerate.
2518         * include/bits/basic_string.h [!_GLIBCXX_USE_CXX11_ABI]
2519         (basic_string): Move definition of Copy-on-Write string to
2520         new file.
2521         * include/bits/basic_string.tcc: Likewise.
2522         * include/bits/cow_string.h: New file.
2523
2524 2021-07-27  Jonathan Wakely  <jwakely@redhat.com>
2525
2526         * include/std/algorithm: Do not include <utility>.
2527         * include/std/functional: Likewise.
2528         * include/std/regex: Include <bits/stl_pair.h> instead of
2529         <utility>.
2530         * include/debug/map.h: Likewise.
2531         * include/debug/multimap.h: Likewise.
2532         * include/debug/multiset.h: Likewise.
2533         * include/debug/set.h: Likewise.
2534         * include/debug/vector: Likewise.
2535         * include/bits/fs_path.h: Likewise.
2536         * include/bits/unique_ptr.h: Do not include <utility>.
2537         * include/experimental/any: Likewise.
2538         * include/experimental/executor: Likewise.
2539         * include/experimental/memory: Likewise.
2540         * include/experimental/optional: Likewise.
2541         * include/experimental/socket: Use __exchange instead
2542         of std::exchange.
2543         * src/filesystem/ops-common.h: Likewise.
2544         * testsuite/20_util/default_delete/48631_neg.cc: Adjust expected
2545         errors to not use a hardcoded line number.
2546         * testsuite/20_util/default_delete/void_neg.cc: Likewise.
2547         * testsuite/20_util/specialized_algorithms/uninitialized_copy/constrained.cc:
2548         Include <utility> for std::as_const.
2549         * testsuite/20_util/specialized_algorithms/uninitialized_default_construct/constrained.cc:
2550         Likewise.
2551         * testsuite/20_util/specialized_algorithms/uninitialized_move/constrained.cc:
2552         Likewise.
2553         * testsuite/20_util/specialized_algorithms/uninitialized_value_construct/constrained.cc:
2554         Likewise.
2555         * testsuite/23_containers/vector/cons/destructible_debug_neg.cc:
2556         Adjust dg-error line number.
2557
2558 2021-07-27  Jonathan Wakely  <jwakely@redhat.com>
2559
2560         * include/Makefile.am: Add bits/utility.h header.
2561         * include/Makefile.in: Regenerate.
2562         * include/bits/utility.h: New file.
2563         * include/std/utility (tuple_size, tuple_element): Move
2564         to new header.
2565         * include/std/type_traits (__is_tuple_like_impl<tuple<T...>>):
2566         Move to <tuple>.
2567         (_Index_tuple, _Build_index_tuple, integer_sequence): Likewise.
2568         (in_place_t, in_place_index_t, in_place_type_t): Likewise.
2569         * include/bits/ranges_util.h: Include new header instead of
2570         <utility>.
2571         * include/bits/stl_pair.h (tuple_size, tuple_element): Move
2572         partial specializations for std::pair here.
2573         (get): Move overloads for std::pair here.
2574         * include/std/any: Include new header instead of <utility>.
2575         * include/std/array: Likewise.
2576         * include/std/memory_resource: Likewise.
2577         * include/std/optional: Likewise.
2578         * include/std/variant: Likewise.
2579         * include/std/tuple: Likewise.
2580         (__is_tuple_like_impl<tuple<T...>>): Move here.
2581         (get) Declare overloads for std::array.
2582         * include/std/version (__cpp_lib_tuples_by_type): Change type
2583         to long.
2584         * testsuite/20_util/optional/84601.cc: Include <utility>.
2585         * testsuite/20_util/specialized_algorithms/uninitialized_fill/constrained.cc:
2586         Likewise.
2587         * testsuite/23_containers/array/tuple_interface/get_neg.cc:
2588         Adjust dg-error line numbers.
2589         * testsuite/std/ranges/access/cbegin.cc: Include <utility>.
2590         * testsuite/std/ranges/access/cend.cc: Likewise.
2591         * testsuite/std/ranges/access/end.cc: Likewise.
2592         * testsuite/std/ranges/single_view.cc: Likewise.
2593
2594 2021-07-23  Jonathan Wakely  <jwakely@redhat.com>
2595
2596         * include/std/future: Include <bits/atomic_base.h> instead of
2597         <atomic>.
2598
2599 2021-07-23  Jonathan Wakely  <jwakely@redhat.com>
2600
2601         * include/bits/stl_relops.h: Update documentation comments.
2602
2603 2021-07-22  Jonathan Wakely  <jwakely@redhat.com>
2604
2605         PR libstdc++/101583
2606         * include/bits/hashtable.h (_Hashtable): Replace mixin with
2607         _Enable_default_ctor. Construct it explicitly in all
2608         non-forwarding, non-defaulted constructors.
2609         * testsuite/23_containers/unordered_map/cons/default.cc: Check
2610         non-default constructors can be used.
2611         * testsuite/23_containers/unordered_set/cons/default.cc:
2612         Likewise.
2613
2614 2021-07-22  David Edelsohn  <dje.gcc@gmail.com>
2615
2616         * config/os/aix/os_defines.h (__LIBC_NO_CPP_MATH_OVERLOADS__): Define.
2617
2618 2021-07-22  Jonathan Wakely  <jwakely@redhat.com>
2619
2620         PR libstdc++/94295
2621         * include/ext/new_allocator.h (_GLIBCXX_OPERATOR_NEW)
2622         (_GLIBCXX_OPERATOR_DELETE, _GLIBCXX_SIZED_DEALLOC): Define.
2623         (allocator::allocate, allocator::deallocate): Use new macros.
2624
2625 2021-07-22  Jonathan Wakely  <jwakely@redhat.com>
2626
2627         PR libstdc++/101571
2628         * include/bits/ranges_uninitialized.h (_DestroyGuard): Change
2629         constructor parameter to reference and use addressof.
2630         * testsuite/util/testsuite_iterators.h: Define deleted operator&
2631         overloads for test iterators.
2632
2633 2021-07-22  Jonathan Wakely  <jwakely@redhat.com>
2634
2635         * include/bits/std_function.h (_Function_base): Add
2636         default member initializers and define constructor as defaulted.
2637         (function::_M_invoker): Add default member initializer.
2638
2639 2021-07-22  Jonathan Wakely  <jwakely@redhat.com>
2640
2641         PR libstdc++/100682
2642         * doc/xml/manual/debug_mode.xml: Update documentation about
2643         debug capability of std::array.
2644         * doc/html/*: Regenerate.
2645         * include/debug/array: New file.
2646
2647 2021-07-21  Jonathan Wakely  <jwakely@redhat.com>
2648
2649         PR libstdc++/101542
2650         * include/ext/rope (sequence_buffer): Add move constructor and
2651         move assignment operator.
2652         * testsuite/ext/rope/101542.cc: New test.
2653
2654 2021-07-20  Jonathan Wakely  <jwakely@redhat.com>
2655
2656         PR libstdc++/101510
2657         * src/c++17/fs_ops.cc (fs::create_directories): Use status
2658         instead of symlink_status.
2659         * src/filesystem/ops.cc (fs::create_directories): Likewise.
2660         * testsuite/27_io/filesystem/operations/create_directories.cc:
2661         Check symlink to existing directory.
2662         * testsuite/27_io/filesystem/operations/create_directory.cc: Do
2663         not test with symlinks on Windows.
2664         * testsuite/experimental/filesystem/operations/create_directories.cc:
2665         Check symlink to existing directory.
2666         * testsuite/experimental/filesystem/operations/create_directory.cc:
2667         Do not test with symlinks on Windows.
2668
2669 2021-07-20  Jonathan Wakely  <jwakely@redhat.com>
2670
2671         PR libstdc++/100863
2672         * include/bits/hashtable.h (_Hashtable): Conditionally delete
2673         default constructor by deriving from _Enable_special_members.
2674         * testsuite/23_containers/unordered_map/cons/default.cc: New test.
2675         * testsuite/23_containers/unordered_set/cons/default.cc: New test.
2676
2677 2021-07-20  Jonathan Wakely  <jwakely@redhat.com>
2678
2679         PR libstdc++/101510
2680         * src/c++17/fs_ops.cc (create_dir): Adjust whitespace.
2681         * testsuite/27_io/filesystem/operations/create_directory.cc:
2682         Test creating directory with name of existing symlink to
2683         directory.
2684         * testsuite/experimental/filesystem/operations/create_directory.cc:
2685         Likewise.
2686
2687 2021-07-16  Jonathan Wakely  <jwakely@redhat.com>
2688
2689         * include/std/tuple (get<I>): Add deleted overload for bad
2690         index.
2691         * testsuite/20_util/tuple/element_access/get_neg.cc: Adjust
2692         expected errors.
2693
2694 2021-07-16  Jonathan Wakely  <jwakely@redhat.com>
2695
2696         * include/bits/max_size_type.h (numeric_limits<__max_size_type>):
2697         Use __int_traits unconditionally.
2698
2699 2021-07-16  Jonathan Wakely  <jwakely@redhat.com>
2700
2701         * include/bits/random.h (_Shift::__value): Use constexpr.
2702         (_Select_uint_least_t::type): Use using-declaration.
2703         (_Mod): Likewise.
2704         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
2705         line number.
2706
2707 2021-07-16  Jonathan Wakely  <jwakely@redhat.com>
2708
2709         * include/bits/cpp_type_traits.h (__INT_N): Use __extension__
2710         instead of diagnostic pragmas.
2711         * include/bits/functional_hash.h: Likewise.
2712         * include/bits/iterator_concepts.h (__is_signed_int128)
2713         (__is_unsigned_int128): Likewise.
2714         * include/bits/max_size_type.h (__max_size_type): Likewise.
2715         (numeric_limits<__max_size_type>): Likewise.
2716         * include/bits/std_abs.h (abs): Likewise.
2717         * include/bits/stl_algobase.h (__size_to_integer): Likewise.
2718         * include/bits/uniform_int_dist.h (uniform_int_distribution):
2719         Likewise.
2720         * include/ext/numeric_traits.h (_GLIBCXX_INT_N_TRAITS):
2721         Likewise.
2722         * include/std/type_traits (__is_integral_helper<INT_N>)
2723         (__is_signed_integer, __is_unsigned_integer)
2724         (__make_unsigned<INT_N>, __make_signed<INT_N>): Likewise.
2725         * include/std/limits (__INT_N): Add __extension__ keyword.
2726         * include/bits/random.h (_Select_uint_least_t)
2727         (random_device): Likewise.
2728
2729 2021-07-16  Patrick Palka  <ppalka@redhat.com>
2730
2731         PR libstdc++/101231
2732         * include/std/ranges (_CachedPosition::_M_get): For non-forward
2733         ranges, just call __builtin_unreachable.
2734         * testsuite/std/ranges/istream_view.cc (test05): New test.
2735
2736 2021-07-16  Patrick Palka  <ppalka@redhat.com>
2737
2738         PR libstdc++/101214
2739         * include/std/ranges (split_view::split_view): Use std::move.
2740         (split_view::_Iterator::_Iterator): Remove redundant
2741         default_initializable constraint.
2742         (split_view::_Sentinel::_Sentinel): Declare.
2743         * testsuite/std/ranges/adaptors/split.cc (test02): New test.
2744
2745 2021-07-16  Marek Polacek  <polacek@redhat.com>
2746
2747         * testsuite/20_util/ratio/operations/ops_overflow_neg.cc: Add
2748         dg-error.
2749
2750 2021-07-16  Jonathan Wakely  <jwakely@redhat.com>
2751
2752         * include/bits/unique_ptr.h: Adjust doxygen markup.
2753
2754 2021-07-16  Jonathan Wakely  <jwakely@redhat.com>
2755
2756         PR libstdc++/101307
2757         * include/std/type_traits: Adjust doxygen markup.
2758
2759 2021-07-16  Jonathan Wakely  <jwakely@redhat.com>
2760
2761         * include/bits/cpp_type_traits.h: Add diagnostic pragmas around
2762         uses of non-standard integer types.
2763         * include/bits/functional_hash.h: Likewise.
2764         * include/bits/iterator_concepts.h: Likewise.
2765         * include/bits/max_size_type.h: Likewise.
2766         * include/bits/std_abs.h: Likewise.
2767         * include/bits/stl_algobase.h: Likewise.
2768         * include/bits/uniform_int_dist.h: Likewise.
2769         * include/ext/numeric_traits.h: Likewise.
2770         * include/std/type_traits: Likewise.
2771
2772 2021-07-15  Jonathan Wakely  <jwakely@redhat.com>
2773
2774         PR libstdc++/101427
2775         * include/std/tuple (tuple_element): Improve static_assert text.
2776         (__get_helper): Add deleted overload.
2777         (get<i>(tuple<T...>&&), get<i>(const tuple<T...>&&)): Use
2778         __get_helper directly.
2779         (__get_helper2): Remove.
2780         (__find_uniq_type_in_pack): New constexpr helper function.
2781         (get<T>): Use __find_uniq_type_in_pack and __get_helper instead
2782         of __get_helper2.
2783         * testsuite/20_util/tuple/element_access/get_neg.cc: Adjust
2784         expected errors.
2785         * testsuite/20_util/tuple/element_access/101427.cc: New test.
2786
2787 2021-07-15  Jonathan Wakely  <jwakely@redhat.com>
2788
2789         PR libstdc++/101429
2790         * include/bits/c++config (__replacement_assert): Add noexcept.
2791         [!_GLIBCXX_VERBOSE] (__glibcxx_assert_impl): Use __builtin_abort
2792         instead of __replacement_assert.
2793
2794 2021-07-14  Jonathan Wakely  <jwakely@redhat.com>
2795
2796         * include/std/string_view (basic_string_view(It, End)): Add
2797         noexcept-specifier.
2798         * testsuite/21_strings/basic_string_view/cons/char/range.cc:
2799         Check noexcept-specifier. Also check construction without CTAD.
2800
2801 2021-07-13  Jonathan Wakely  <jwakely@redhat.com>
2802
2803         PR c++/101361
2804         * include/std/string_view (ends_with): Use traits_type::compare
2805         directly.
2806
2807 2021-07-13  Jonathan Wakely  <jwakely@redhat.com>
2808
2809         * include/std/string_view: Only include <bits/ranges_base.h>
2810         once, and only for C++20 and later.
2811
2812 2021-07-12  Jonathan Wakely  <jwakely@redhat.com>
2813
2814         PR libstdc++/101411
2815         * include/std/span (as_writable_bytes): Add requires-clause.
2816         * testsuite/23_containers/span/101411.cc: New test.
2817
2818 2021-07-09  Matheus Castanho  <msc@linux.ibm.com>
2819
2820         * include/std/mutex (__lock_impl): Check
2821         _GLIBCXX_HAS_GTHREADS before using __gthread_yield.
2822
2823 2021-07-02  Jonathan Wakely  <jwakely@redhat.com>
2824
2825         PR libstdc++/101271
2826         * include/bits/unique_ptr.h (unique_ptr<T[],D>::operator[]):
2827         Remove noexcept-specifier.
2828         (unique_ptr<T[],D>::_S_nothrow_deref): Remove.
2829         * testsuite/20_util/unique_ptr/lwg2762.cc: Remove checks for
2830         operator[].
2831
2832 2021-07-01  Jonathan Wakely  <jwakely@redhat.com>
2833
2834         * doc/doxygen/doxygroups.cc: Fix docs for std::literals.
2835         * doc/doxygen/user.cfg.in: Exclude the Networking TS header.
2836         Add some more predefined macros.
2837         * include/bits/fs_fwd.h: Move @addtogroup commands inside
2838         namespaces. Add better documentation.
2839         * include/bits/fs_path.h: Likewise.
2840         * include/experimental/bits/fs_fwd.h: Likewise.
2841         * include/experimental/bits/fs_path.h: Likewise.
2842         * include/ext/throw_allocator.h: Fix typo and improve docs.
2843         * include/std/chrono: Move @addtogroup commands.
2844         * include/std/system_error: Move @addtogroup commands.
2845         * libsupc++/exception: Improve documentation.
2846         * libsupc++/exception.h: Add @since documentation.
2847
2848 2021-06-30  Jonathan Wakely  <jwakely@redhat.com>
2849
2850         PR libstdc++/101258
2851         * doc/doxygen/user.cfg.in (INPUT): Add <experimental/simd>.
2852         (COLS_IN_ALPHA_INDEX): Remove obsolete tag.
2853         (PREDEFINED): Add/fix some more macros that need to be expanded.
2854         * include/bits/random.h: Stop Doxygen from documenting internal
2855         implementation details.
2856         * include/bits/random.tcc: Likewise.
2857         * include/bits/this_thread_sleep.h: Fix @file name.
2858         * include/experimental/bits/simd.h: Add to Doxygen group. Do not
2859         document internal implementation details.
2860         * include/experimental/bits/simd_detail.h: Do not document
2861         internal implementation details.
2862         * include/experimental/simd: Define Doxygen groups.
2863         * include/experimental/type_traits: Improve documentation for
2864         the header file. Define groups. Use @since commands.
2865         * include/std/scoped_allocator (scoped_allocator_adaptor): Move
2866         declaration before undocumented region.
2867         * include/std/type_traits (true_type, false_type): Use using
2868         declaration instead of typedef.
2869         (is_invocable_v, is_nothrow_invocable_v, is_invocable_r_v)
2870         (is_nothrow_invocable_r_v): Move definitions next to other C++17
2871         variable templates.
2872         Do not document internal implementation details. Move misplaced
2873         group-end command. Define group for variable templates.
2874         * include/std/variant: Do not document internal implementation
2875         details.
2876         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
2877         line number.
2878
2879 2021-06-30  Jonathan Wakely  <jwakely@redhat.com>
2880
2881         * include/experimental/simd: Do not define anything pre-C++17.
2882
2883 2021-06-30  Jonathan Wakely  <jwakely@redhat.com>
2884
2885         * include/bits/random.tcc [__cpp_inline_variables]: Remove
2886         redundant definitions of static constexpr member variables.
2887         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
2888         line number.
2889
2890 2021-06-28  Jonathan Wakely  <jwakely@redhat.com>
2891
2892         * include/bits/streambuf.tcc (__copy_streambufs_eof): Remove
2893         explicit instantiation declarations.
2894         * src/c++11/streambuf-inst.cc (__copy_streambufs_eof): Remove
2895         explicit instantiation definitions.
2896
2897 2021-06-28  Jonathan Wakely  <jwakely@redhat.com>
2898
2899         PR libstdc++/97088
2900         * testsuite/17_intro/names.cc: Fix #if condition for names used
2901         by newlib headers.
2902
2903 2021-06-28  Jonathan Wakely  <jwakely@redhat.com>
2904
2905         PR libstdc++/101236
2906         * include/bits/unique_ptr.h (unique_ptr<T[], D>::operator[]):
2907         Fail gracefully if element_type is incomplete.
2908         * testsuite/20_util/unique_ptr/cons/incomplete.cc: Clarify that
2909         the standard doesn't require this test to work for array types.
2910         * testsuite/20_util/unique_ptr/lwg2762.cc: Check that incomplete
2911         types can be used with array specialization.
2912         * testsuite/20_util/unique_ptr/101236.cc: New test.
2913
2914 2021-06-28  Jonathan Wakely  <jwakely@redhat.com>
2915
2916         * doc/xml/manual/intro.xml: Document LWG 415 change.
2917         * doc/html/manual/bugs.html: Regenerate.
2918         * include/bits/istream.tcc (ws): Create sentry and catch
2919         exceptions.
2920         * testsuite/27_io/basic_istream/ws/char/lwg415.cc: New test.
2921         * testsuite/27_io/basic_istream/ws/wchar_t/lwg415.cc: New test.
2922
2923 2021-06-25  Jonathan Wakely  <jwakely@redhat.com>
2924
2925         * include/bits/ostream.tcc (basic_ostream::write): Call sputn
2926         directly instead of using _M_write. Do setstate(__err) all
2927         outside the try-catch block.
2928         * include/std/ostream (basic_ostream::_M_write): Declare
2929         private. Use __ostream_insert. Do not define for the versioned
2930         namespace.
2931
2932 2021-06-25  Jonathan Wakely  <jwakely@redhat.com>
2933
2934         * doc/xml/manual/intro.xml: Document LWG 581 change.
2935         * doc/html/manual/bugs.html: Regenerate.
2936         * include/bits/basic_ios.tcc: Whitespace.
2937         * include/bits/ostream.tcc (basic_ostream::flush()): Construct
2938         sentry.
2939         * testsuite/27_io/basic_ostream/flush/char/2.cc: Check
2940         additional cases.
2941         * testsuite/27_io/basic_ostream/flush/char/exceptions_badbit_throw.cc:
2942         Likewise.
2943         * testsuite/27_io/basic_ostream/flush/wchar_t/2.cc: Likewise.
2944         * testsuite/27_io/basic_ostream/flush/wchar_t/exceptions_badbit_throw.cc:
2945         Likewise.
2946
2947 2021-06-25  Jonathan Wakely  <jwakely@redhat.com>
2948
2949         * include/bits/ostream.tcc (sentry): Only set failbit if badbit
2950         is set, not if eofbit is set.
2951         (tellp, seekp, seekp): Create sentry object. Do not set badbit
2952         on exceptions.
2953         * testsuite/27_io/basic_ostream/seekp/char/exceptions_badbit_throw.cc:
2954         Adjust expected behaviour.
2955         * testsuite/27_io/basic_ostream/seekp/wchar_t/exceptions_badbit_throw.cc:
2956         Likewise.
2957         * testsuite/27_io/basic_ostream/tellp/char/exceptions_badbit_throw.cc:
2958         Likewise.
2959         * testsuite/27_io/basic_ostream/tellp/wchar_t/exceptions_badbit_throw.cc:
2960         Likewise.
2961         * testsuite/27_io/basic_ostream/seekp/char/n3168.cc: New test.
2962         * testsuite/27_io/basic_ostream/seekp/wchar_t/n3168.cc: New test.
2963         * testsuite/27_io/basic_ostream/tellp/char/n3168.cc: New test.
2964         * testsuite/27_io/basic_ostream/tellp/wchar_t/n3168.cc: New test.
2965
2966 2021-06-25  Jonathan Wakely  <jwakely@redhat.com>
2967
2968         * include/std/syncstream (basic_syncbuf::swap()): Remove
2969         noexcept, as per LWG 3498.
2970
2971 2021-06-25  Jonathan Wakely  <jwakely@redhat.com>
2972
2973         PR libstdc++/97088
2974         * testsuite/17_intro/names.cc: Undef more names for newlib and
2975         also for arm-none-linux-gnueabi.
2976         * testsuite/experimental/names.cc: Disable PCH.
2977
2978 2021-06-25  Matthias Kretz  <m.kretz@gsi.de>
2979
2980         * include/experimental/bits/simd.h (__bit_cast): Implement via
2981         __builtin_bit_cast #if available.
2982         (__proposed::simd_bit_cast): Add overloads for simd and
2983         simd_mask, which use __builtin_bit_cast (or __bit_cast #if not
2984         available), which return an object of the requested type with
2985         the same bits as the argument.
2986         * include/experimental/bits/simd_math.h: Use simd_bit_cast
2987         instead of __bit_cast to allow casts to fixed_size_simd.
2988         (copysign): Remove branch that was only required if __bit_cast
2989         cannot be constexpr.
2990         * testsuite/experimental/simd/tests/bits/test_values.h: Switch
2991         from __bit_cast to __proposed::simd_bit_cast since the former
2992         will not cast fixed_size objects anymore.
2993
2994 2021-06-24  Matthias Kretz  <m.kretz@gsi.de>
2995
2996         * include/experimental/bits/simd_math.h
2997         (_GLIBCXX_SIMD_MATH_CALL2_): Rename arg2_ to __arg2.
2998         (_GLIBCXX_SIMD_MATH_CALL3_): Rename arg2_ to __arg2 and arg3_ to
2999         __arg3.
3000
3001 2021-06-24  Matthias Kretz  <m.kretz@gsi.de>
3002
3003         * include/experimental/bits/simd.h (__execute_on_index_sequence)
3004         (__execute_on_index_sequence_with_return)
3005         (__call_with_n_evaluations, __call_with_subscripts): Add flatten
3006         attribute.
3007
3008 2021-06-24  Matthias Kretz  <m.kretz@gsi.de>
3009
3010         * include/experimental/bits/simd_x86.h (_S_trunc, _S_floor)
3011         (_S_ceil): Set bit 8 (_MM_FROUND_NO_EXC) on AVX and SSE4.1
3012         roundp[sd] calls.
3013
3014 2021-06-24  Matthias Kretz  <m.kretz@gsi.de>
3015
3016         * include/experimental/bits/simd_x86.h (_S_ldexp): The AVX512F
3017         implementation doesn't require a _VecBltnBtmsk ABI tag, it
3018         requires either a 64-Byte input (in which case AVX512F must be
3019         available) or AVX512VL.
3020
3021 2021-06-24  Matthias Kretz  <m.kretz@gsi.de>
3022
3023         * include/experimental/bits/simd_math.h: Undefine internal
3024         macros after use.
3025         (frexp): Move #if to a more sensible position and reformat
3026         preceding code.
3027         (logb): Call _SimdImpl::_S_logb for fixed_size instead of
3028         duplicating the code here.
3029         (modf): Simplify condition.
3030
3031 2021-06-24  Matthias Kretz  <m.kretz@gsi.de>
3032
3033         * include/experimental/bits/simd_math.h (fabs): Remove
3034         fabs(simd<integral>) overload.
3035
3036 2021-06-24  Matthias Kretz  <m.kretz@gsi.de>
3037
3038         * include/experimental/bits/simd_converter.h
3039         (_SimdConverter::operator()): Pass _SimdTuple by const-ref.
3040         * include/experimental/bits/simd_fixed_size.h
3041         (_GLIBCXX_SIMD_FIXED_OP): Pass binary operator _SimdTuple
3042         arguments by const-ref.
3043         (_S_masked_unary): Pass _SimdTuple by const-ref.
3044
3045 2021-06-24  Matthias Kretz  <m.kretz@gsi.de>
3046
3047         * include/experimental/bits/simd_fixed_size.h
3048         (_AbisInSimdTuple): Removed.
3049
3050 2021-06-24  Matthias Kretz  <m.kretz@gsi.de>
3051
3052         * include/experimental/bits/simd.h: Add missing operator~
3053         overload for simd<floating-point> to __float_bitwise_operators.
3054         * include/experimental/bits/simd_builtin.h
3055         (_SimdImplBuiltin::_S_complement): Bitcast to int (and back) to
3056         implement complement for floating-point vectors.
3057         * include/experimental/bits/simd_fixed_size.h
3058         (_SimdImplFixedSize::_S_copysign): New function, forwarding to
3059         copysign implementation of _SimdTuple members.
3060         * include/experimental/bits/simd_math.h (copysign): Call
3061         _SimdImpl::_S_copysign for fixed_size arguments. Simplify
3062         generic copysign implementation using the new ~ operator.
3063
3064 2021-06-24  Jonathan Wakely  <jwakely@redhat.com>
3065
3066         * testsuite/experimental/simd/README.md: Fix typos.
3067
3068 2021-06-24  Jonathan Wakely  <jwakely@redhat.com>
3069
3070         * include/bits/shared_ptr_base.h (__shared_ptr_access::operator[]):
3071         Add noexcept.
3072         * include/bits/unique_ptr.h (unique_ptr::operator*): Add
3073         conditional noexcept as per LWG 2762.
3074         * testsuite/20_util/shared_ptr/observers/array.cc: Check that
3075         dereferencing cannot throw.
3076         * testsuite/20_util/shared_ptr/observers/get.cc: Likewise.
3077         * testsuite/20_util/optional/observers/lwg2762.cc: New test.
3078         * testsuite/20_util/unique_ptr/lwg2762.cc: New test.
3079
3080 2021-06-23  Patrick Palka  <ppalka@redhat.com>
3081
3082         PR c++/101174
3083         * testsuite/23_containers/multiset/cons/deduction.cc:
3084         Uncomment CTAD example that was rejected by this bug.
3085         * testsuite/23_containers/set/cons/deduction.cc: Likewise.
3086
3087 2021-06-23  Jonathan Wakely  <jwakely@redhat.com>
3088
3089         * include/std/chrono (chrono::year::is_leap()): Fix incorrect
3090         logic in comment.
3091
3092 2021-06-23  Matthias Kretz  <m.kretz@gsi.de>
3093
3094         * testsuite/experimental/simd/README.md: New file.
3095
3096 2021-06-23  Matthias Kretz  <m.kretz@gsi.de>
3097
3098         * testsuite/experimental/simd/driver.sh: Rewrite output
3099         verbosity logic. Add -p/--percentage option. Allow -v/--verbose
3100         to be used twice. Add -x and -o short options. Parse long
3101         options with = instead of separating space generically. Parce
3102         contracted short options. Make unrecognized options an error.
3103         If same-line output is active, trap on EXIT to increment the
3104         progress (only with --percentage), erase the line and print the
3105         current status.
3106         * testsuite/experimental/simd/generate_makefile.sh: Initialize
3107         helper files for progress account keeping. Update help target
3108         for changes to DRIVEROPTS.
3109
3110 2021-06-23  Matthias Kretz  <m.kretz@gsi.de>
3111
3112         * testsuite/Makefile.am (check-simd): Remove -fno-tree-vrp flag
3113         and associated warning.
3114         * testsuite/Makefile.in: Regenerate.
3115
3116 2021-06-23  Cassio Neri  <cassio.neri@gmail.com>
3117             Jonathan Wakely  <jwakely@redhat.com>
3118             Ulrich Drepper  <drepper@redhat.com>
3119
3120         * include/std/chrono (chrono::year::is_leap()): Optimize.
3121
3122 2021-06-23  Patrick Palka  <ppalka@redhat.com>
3123
3124         PR c++/86439
3125         * testsuite/23_containers/map/cons/deduction.cc: Replace ambiguous
3126         CTAD examples.
3127         * testsuite/23_containers/multimap/cons/deduction.cc: Likewise.
3128         * testsuite/23_containers/multiset/cons/deduction.cc: Likewise.
3129         Mention one of the replaced examples is broken due to PR101174.
3130         * testsuite/23_containers/set/cons/deduction.cc: Likewise.
3131         * testsuite/23_containers/unordered_map/cons/deduction.cc: Replace
3132         ambiguous CTAD examples.
3133         * testsuite/23_containers/unordered_multimap/cons/deduction.cc:
3134         Likewise.
3135         * testsuite/23_containers/unordered_multiset/cons/deduction.cc:
3136         Likewise.
3137         * testsuite/23_containers/unordered_set/cons/deduction.cc: Likewise.
3138
3139 2021-06-23  Jonathan Wakely  <jwakely@redhat.com>
3140
3141         * include/std/mutex (__detail::__try_lock_impl): Rename
3142         parameter to avoid clashing with newlib's __lockable macro.
3143         (try_lock): Add 'inline' specifier.
3144         * testsuite/17_intro/names.cc: Add check for __lockable.
3145         * testsuite/30_threads/try_lock/5.cc: Add options for pthreads.
3146
3147 2021-06-22  Jonathan Wakely  <jwakely@redhat.com>
3148             Matthias Kretz  <m.kretz@gsi.de>
3149
3150         * include/std/mutex (lock): Replace recursion with iteration
3151         when lockables all have the same type.
3152         (__detail::__try_lock_impl): Likewise. Pass lockables as
3153         parameters, instead of a tuple. Always lock the first one, and
3154         recurse for the rest.
3155         (__detail::__lock_impl): Adjust call to __try_lock_impl.
3156         (__detail::__try_to_lock): Remove.
3157         * testsuite/30_threads/lock/3.cc: Check that mutexes are locked.
3158         * testsuite/30_threads/lock/4.cc: Also test non-heterogeneous
3159         arguments.
3160         * testsuite/30_threads/unique_lock/cons/60497.cc: Also check
3161         std::try_lock.
3162         * testsuite/30_threads/try_lock/5.cc: New test.
3163
3164 2021-06-22  Jonathan Wakely  <jwakely@redhat.com>
3165
3166         * include/std/memory (declare_reachable, undeclare_reachable)
3167         (declare_no_pointers, undeclare_no_pointers, get_pointer_safety)
3168         (pointer_safety): Only define for C++11 to C++20 inclusive.
3169         * testsuite/20_util/pointer_safety/1.cc: Do not run for C++23.
3170
3171 2021-06-22  Jonathan Wakely  <jwakely@redhat.com>
3172
3173         * include/bits/random.h (seed_seq): Constrain initializer-list
3174         constructor.
3175         * include/bits/random.tcc (seed_seq): Add template parameter.
3176         * testsuite/26_numerics/random/seed_seq/cons/default.cc: Check
3177         for noexcept.
3178         * testsuite/26_numerics/random/seed_seq/cons/initlist.cc: Check
3179         constraints.
3180
3181 2021-06-22  Thomas Rodgers  <rodgert@appliantology.com>
3182
3183         PR libstdc++/100806
3184         * include/bits/semaphore_base.h (__atomic_semaphore::_M_release):
3185         Force _M_release() to wake all waiting threads.
3186         * testsuite/30_threads/semaphore/100806.cc: New test.
3187
3188 2021-06-21  Jonathan Wakely  <jwakely@redhat.com>
3189
3190         * include/std/mutex (__try_to_lock): Move to __detail namespace.
3191         (struct __try_lock_impl): Replace with ...
3192         (__detail::__try_lock_impl<Idx>(tuple<Lockables...>&)): New
3193         function templates to implement std::try_lock.
3194         (try_lock): Use new __try_lock_impl.
3195         (__detail::__lock_impl(int, int&, L0&, L1&...)): New function
3196         template to implement std::lock.
3197         (lock): Use __lock_impl.
3198
3199 2021-06-21  Patrick Palka  <ppalka@redhat.com>
3200
3201         * include/bits/ranges_cmp.h (__cpp_lib_ranges): Adjust value.
3202
3203 2021-06-20  Patrick Palka  <ppalka@redhat.com>
3204
3205         * include/std/ranges (__non_propagating_cache::operator bool):
3206         Define for split_view::begin().
3207         (split_view): Define as per P2210.
3208         (views::__detail::__can_split_view): Define.
3209         (views::_Split, views::split): Define.
3210         * testsuite/std/ranges/adaptors/100577.cc (test01, test02):
3211         Test views::split.
3212         * testsuite/std/ranges/adaptors/split.cc: New test.
3213         * testsuite/std/ranges/p2325.cc (test08a): New test.
3214         * testsuite/std/ranges/p2367.cc (test01): Test views::split.
3215
3216 2021-06-20  Patrick Palka  <ppalka@redhat.com>
3217
3218         * include/std/ranges: Rename views::split to views::lazy_split,
3219         split_view to lazy_split_view, etc. throughout.
3220         * testsuite/std/ranges/*: Likewise.
3221         * testsuite/std/ranges/adaptors/lazy_split.cc: New file.
3222         * testsuite/std/ranges/adaptors/lazy_split_neg.cc: New file.
3223
3224 2021-06-20  Patrick Palka  <ppalka@redhat.com>
3225
3226         * include/std/ranges (split_view::_OuterIter::__at_end):
3227         Check _M_trailing_empty.
3228         (split_view::_OuterIter::_M_trailing_empty): Define this
3229         data member.
3230         (split_view::_OuterIter::operator++): Set _M_trailing_empty
3231         appropriately.
3232         (split_view::_OuterIter::operator==): Compare
3233         _M_trailing_empty.
3234         * testsuite/std/ranges/adaptors/100479.cc (test03): Expect two
3235         split parts instead of one.
3236         * testsuite/std/ranges/adaptors/split.cc (test11): New test.
3237
3238 2021-06-20  Patrick Palka  <ppalka@redhat.com>
3239
3240         * include/std/ranges (split_view::_InnerIter::base): Define as
3241         per P2210.
3242
3243 2021-06-19  Patrick Palka  <ppalka@redhat.com>
3244
3245         * include/std/ranges (transform_view::_Iterator::_S_iter_concept):
3246         Consider _Base instead of _Vp as per LWG 3555.
3247         (elements_view::_Iterator::_S_iter_concept): Likewise.
3248
3249 2021-06-19  Patrick Palka  <ppalka@redhat.com>
3250
3251         * include/std/ranges (split_view::_OuterIter::value_type::begin):
3252         Remove the non-const overload, and remove the copyable constraint
3253         on the const overload as per LWG 3553.
3254
3255 2021-06-19  Patrick Palka  <ppalka@redhat.com>
3256
3257         * include/bits/stl_iterator.h
3258         (__detail::__common_iter_use_postfix_proxy): Add
3259         move_constructible constraint as per LWG 3546.
3260         (common_iterator::__postfix_proxy): Adjust initializer of
3261         _M_keep as per LWG 3546.
3262
3263 2021-06-18  Patrick Palka  <ppalka@redhat.com>
3264
3265         PR libstdc++/100387
3266         * include/bits/ranges_algo.h (__minmax_fn::operator()): Rewrite
3267         to limit comparison complexity to 3*N/2.
3268         (__minmax_element_fn::operator()): Likewise.
3269         (shift_right): Avoid premature std::move of __result.
3270         * testsuite/25_algorithms/minmax/constrained.cc (test04, test05):
3271         New tests.
3272         * testsuite/25_algorithms/minmax_element/constrained.cc (test02):
3273         Likewise.
3274
3275 2021-06-18  Patrick Palka  <ppalka@redhat.com>
3276
3277         * include/std/concepts (convertible_to): Just use declval as per
3278         LWG 3557.
3279
3280 2021-06-18  Jonathan Wakely  <jwakely@redhat.com>
3281
3282         PR libstdc++/95833
3283         * include/std/numeric (reduce(Iter, Iter, T, BinaryOp)): Replace
3284         incorrect static_assert with ones matching the 'Mandates'
3285         conditions in the standard.
3286         * testsuite/26_numerics/reduce/95833.cc: New test.
3287
3288 2021-06-18  Jonathan Wakely  <jwakely@redhat.com>
3289
3290         * testsuite/21_strings/basic_string/cons/char/1.cc: Use
3291         diagnostic pragma to suppress -Wstringop-overread error.
3292
3293 2021-06-18  Patrick Palka  <ppalka@redhat.com>
3294
3295         * include/bits/ranges_algo.h (__find_fn, find, __find_if_fn)
3296         (find_if, __find_if_not_fn, find_if_not, _in_in_result)
3297         (__mismatch_fn, mismatch, __search_fn, search): Move to ...
3298         * include/bits/ranges_util.h: ... here.
3299         * include/std/ranges (__detail::find, __detail::find_if)
3300         (__detail::find_if_not, __detail::mismatch): Remove.
3301         (filter_view): Use ranges::find_if instead.
3302         (drop_while_view): Use ranges::find_if_not instead.
3303         (split_view): Use ranges::find and ranges::mismatch instead.
3304
3305 2021-06-18  Patrick Palka  <ppalka@redhat.com>
3306
3307         * include/bits/iterator_concepts.h (weakly_incrementable): Remove
3308         default_initializable requirement.
3309         * include/bits/ranges_base.h (ranges::view): Likewise.
3310         * include/bits/ranges_util.h (subrange): Constrain the default
3311         ctor.
3312         * include/bits/stl_iterator.h (back_insert_iterator): Remove the
3313         default ctor.
3314         (front_insert_iterator): Likewise.
3315         (insert_iterator): Likewise.  Remove NSDMIs.
3316         (common_iterator): Constrain the default ctor.
3317         (counted_iterator): Likewise.
3318         * include/bits/stream_iterator.h (ostream_iterator): Remove the
3319         default ctor.
3320         * include/std/ranges (__detail::__box::operator=): Handle
3321         self-assignment in the primary template.
3322         (__detail::__box): In the partial specialization: adjust
3323         constraints as per P2325.  Add specialized operator= for the
3324         case when the wrapped type is not copyable.  Constrain the
3325         default ctor.  Avoid list-initialization.
3326         (single_view): Constraint the default ctor.
3327         (iota_view): Relax semiregular constraint to copyable.
3328         Constrain the default ctor.
3329         (iota_view::_Iterator): Constraint the default ctor.
3330         (basic_istream_view): Remove the default ctor.  Remove NSDMIs.
3331         Remove redundant checks for empty _M_stream.
3332         (basic_istream_view::_Iterator): Likewise.
3333         (ref_view): Remove the default ctor.  Remove NSDMIs.
3334         (ref_view::_Iterator): Constrain the default ctor.
3335         (__detail::__non_propagating_cache::operator=): Define overload
3336         for assigning from a value of the underlying type.
3337         (filter_view): Likewise.
3338         (filter_view::_Iterator): Likewise.
3339         (transform_view): Likewise.
3340         (transform_view::_Iterator): Likewise.
3341         (take_view): Likewise.
3342         (take_view::_Iterator): Likewise.
3343         (take_while_view): Likewise.
3344         (take_while_view::_Iterator): Likewise.
3345         (drop_while_view): Likewise.
3346         (drop_while_view::_Iterator): Likewise.
3347         (join_view): Likewise.
3348         (split_view::_OuterIter::__current): Adjust after changing the
3349         type of _M_current.
3350         (split_view::_M_current): Wrap it in a __non_propagating_cache.
3351         (split_view::split_view): Constrain the default ctor.
3352         (common_view): Constrain the default ctor.
3353         (reverse_view): Likewise.
3354         (elements_view): Likewise.
3355         * include/std/span (enable_view<span<_ElementType, _Extent>>):
3356         Define this partial specialization to true unconditionally.
3357         * include/std/version (__cpp_lib_ranges): Adjust value.
3358         * testsuite/24_iterators/back_insert_iterator/constexpr.cc:
3359         Don't attempt to default construct a back_insert_iterator.
3360         * testsuite/24_iterators/front_insert_iterator/constexpr.cc:
3361         Don't attempt to default construct a front_insert_iterator.
3362         * testsuite/24_iterators/insert_iterator/constexpr.cc:
3363         Don't attempt to default construct an insert_iterator.
3364         * testsuite/24_iterators/ostream_iterator/requirements/constexpr.cc:
3365         Remove this test for default constructibility of ostream_iterator.
3366         * testsuite/std/ranges/97600.cc: Don't attempt to default
3367         construct a basic_istream_view.
3368         * testsuite/std/ranges/adaptors/detail/semiregular_box.cc:
3369         Rename to ...
3370         * testsuite/std/ranges/adaptors/detail/copyable_box.cc: ... this.
3371         (test02): Adjust now that __box is copyable-box not
3372         semiregular-box.
3373         (test03): New test.
3374         * testsuite/std/ranges/p2325.cc: New test.
3375         * testsuite/std/ranges/single_view.cc (test06): New test.
3376         * testsuite/std/ranges/view.cc: Adjust now that view doesn't
3377         require default_initializable.
3378
3379 2021-06-17  Jonathan Wakely  <jwakely@redhat.com>
3380
3381         PR libstdc++/91488
3382         * include/bits/basic_string.h (__cpp_lib_constexpr_string): Only
3383         define when is_constant_evaluated is available.
3384         * include/bits/char_traits.h (__cpp_lib_constexpr_char_traits):
3385         Likewise.
3386         (__constant_string_p, __constant_array_p): Remove.
3387         (char_traits): Use is_constant_evaluated directly.
3388         * include/std/version (__cpp_lib_constexpr_char_traits)
3389         (__cpp_lib_constexpr_string): Only define when
3390         is_constant_evaluated is available.
3391
3392 2021-06-17  Patrick Palka  <ppalka@redhat.com>
3393
3394         PR libstdc++/100940
3395         * include/std/ranges (__adaptor::_Partial): For the "simple"
3396         forwarding partial specializations, also require that
3397         the extra arguments are trivially copyable.
3398         * testsuite/std/ranges/adaptors/100577.cc (test04): New test.
3399
3400 2021-06-17  Patrick Palka  <ppalka@redhat.com>
3401
3402         PR libstdc++/100940
3403         * include/std/ranges (__adaptor::_RangeAdaptor): Document the
3404         template form of _S_has_simple_extra_args.
3405         (__adaptor::__adaptor_has_simple_extra_args): Add _Args template
3406         parameter pack.  Try to treat _S_has_simple_extra_args as a
3407         variable template parameterized by _Args.
3408         (__adaptor::_Partial): Pass _Arg/_Args to the constraint
3409         __adaptor_has_simple_extra_args.
3410         (views::_Take::_S_has_simple_extra_args): Templatize according
3411         to the type of the extra argument.
3412         (views::_Drop::_S_has_simple_extra_args): Likewise.
3413         (views::_Split::_S_has_simple_extra_args): Define.
3414         * testsuite/std/ranges/adaptors/100577.cc (test01, test02):
3415         Adjust after changes to _S_has_simple_extra_args mechanism.
3416         (test03): Define.
3417
3418 2021-06-16  Jonathan Wakely  <jwakely@redhat.com>
3419
3420         * include/bits/iterator_concepts.h (__decay_copy): Name type.
3421
3422 2021-06-16  Jonathan Wakely  <jwakely@redhat.com>
3423
3424         * include/bits/ranges_base.h (ranges::begin, ranges::end)
3425         (ranges::cbegin, ranges::cend, ranges::rbeing, ranges::rend)
3426         (ranges::crbegin, ranges::crend, ranges::size, ranges::ssize)
3427         (ranges::empty, ranges::data, ranges::cdata): Remove final
3428         keywords and deleted operator& overloads.
3429         * testsuite/24_iterators/customization_points/iter_move.cc: Use
3430         new is_customization_point_object function.
3431         * testsuite/24_iterators/customization_points/iter_swap.cc:
3432         Likewise.
3433         * testsuite/std/concepts/concepts.lang/concept.swappable/swap.cc:
3434         Likewise.
3435         * testsuite/std/ranges/access/begin.cc: Likewise.
3436         * testsuite/std/ranges/access/cbegin.cc: Likewise.
3437         * testsuite/std/ranges/access/cdata.cc: Likewise.
3438         * testsuite/std/ranges/access/cend.cc: Likewise.
3439         * testsuite/std/ranges/access/crbegin.cc: Likewise.
3440         * testsuite/std/ranges/access/crend.cc: Likewise.
3441         * testsuite/std/ranges/access/data.cc: Likewise.
3442         * testsuite/std/ranges/access/empty.cc: Likewise.
3443         * testsuite/std/ranges/access/end.cc: Likewise.
3444         * testsuite/std/ranges/access/rbegin.cc: Likewise.
3445         * testsuite/std/ranges/access/rend.cc: Likewise.
3446         * testsuite/std/ranges/access/size.cc: Likewise.
3447         * testsuite/std/ranges/access/ssize.cc: Likewise.
3448         * testsuite/util/testsuite_iterators.h
3449         (is_customization_point_object): New function.
3450
3451 2021-06-15  Jonathan Wakely  <jwakely@redhat.com>
3452
3453         * include/bits/ranges_base.h (ranges::begin, ranges::end)
3454         (ranges::cbegin, ranges::cend, ranges::rbeing, ranges::rend)
3455         (ranges::crbegin, ranges::crend, ranges::size, ranges::ssize)
3456         (ranges::empty, ranges::data, ranges::cdata): Make types final.
3457         Add deleted operator& overloads.
3458         (ranges::advance, ranges::distance, ranges::next, ranges::prev):
3459         Likewise.
3460         * testsuite/std/ranges/headers/ranges/synopsis.cc: Replace
3461         ill-formed & expressions with using-declarations. Add checks for
3462         other function objects.
3463
3464 2021-06-15  Jonathan Wakely  <jwakely@redhat.com>
3465
3466         * include/bits/ranges_util.h (view_interface): Add noexcept to
3467         empty, operator bool, data and size members.
3468         (subrange): Add noexcept to constructors.
3469         * include/std/ranges (single_view, ref_view): Add noexcept to
3470         constructors.
3471         (views::single, views::all): Add noexcept.
3472         * testsuite/std/ranges/adaptors/all.cc: Check noexcept.
3473         * testsuite/std/ranges/single_view.cc: Likewise.
3474
3475 2021-06-15  Jonathan Wakely  <jwakely@redhat.com>
3476
3477         * include/bits/ranges_util.h (subrange): Add __size_type typedef
3478         and use it to simplify declarations.
3479         (subrange(i, s, n)): Remove assertion.
3480         * testsuite/std/ranges/subrange/constexpr.cc: New test.
3481
3482 2021-06-15  Jonathan Wakely  <jwakely@redhat.com>
3483
3484         * include/bits/iterator_concepts.h (__cust_access::__decay_copy):
3485         Replace with function object.
3486         (__cust_access::__member_begin, ___cust_access::_adl_begin): Use
3487         __decay_copy unqualified.
3488         * include/bits/ranges_base.h (__member_end, __adl_end):
3489         Likewise. Use __range_iter_t for type of ranges::begin.
3490         (__member_rend): Use correct value category for rbegin argument.
3491         (__member_data): Use __decay_copy unqualified.
3492         (__begin_data): Use __range_iter_t for type of ranges::begin.
3493
3494 2021-06-14  Jonathan Wakely  <jwakely@redhat.com>
3495
3496         * include/bits/ranges_base.h (ranges::empty): Check whether
3497         conversion to bool can throw.
3498         * testsuite/std/ranges/access/empty.cc: Check for correct
3499         noexcept-specifier.
3500
3501 2021-06-14  Jonathan Wakely  <jwakely@redhat.com>
3502
3503         PR libstdc++/100894
3504         * include/std/type_traits (__common_ref_impl<X&, Y&>): Only
3505         use the type if it's a reference.
3506         * testsuite/20_util/common_reference/100894.cc: New test.
3507
3508 2021-06-14  Jonathan Wakely  <jwakely@redhat.com>
3509
3510         * testsuite/experimental/filesystem/path/native/conv_c++23.cc:
3511         Add dg-require-filesystem-ts directive.
3512
3513 2021-06-14  Jonathan Wakely  <jwakely@redhat.com>
3514
3515         PR libstdc++/101034
3516         * include/std/any (any(in_place_t<T>, initializer_list<U>, A&&...))
3517         (any::emplace<T>(initializer_list<U>, A&&...)): Fix constraint
3518         to use lvalue.
3519         * testsuite/20_util/any/cons/101034.cc: New test.
3520
3521 2021-06-14  Jonathan Wakely  <jwakely@redhat.com>
3522
3523         * testsuite/17_intro/headers/c++2017/all_attributes.cc: Add
3524         -std=gnu++17 option.
3525
3526 2021-06-14  Jonathan Wakely  <jwakely@redhat.com>
3527
3528         PR libstdc++/101056
3529         * libsupc++/compare (compare_partial_order_fallback): Add
3530         constraint using reversed parameter order, as per LWG 3465.
3531         * testsuite/18_support/comparisons/algorithms/fallback.cc:
3532         Adjust expected result.
3533
3534 2021-06-14  Jonathan Wakely  <jwakely@redhat.com>
3535
3536         * libsupc++/compare (__decayed_same_as): New helper concept.
3537         (strong_order, weak_order, partial_order): Constrain with new
3538         concept instead of using static_assert.
3539         (compare_strong_order_fallback, compare_weak_order_fallback)
3540         (compare_partial_order_fallback): Likewise. Do not deduce return
3541         types. Remove redundant if-constexpr checks.
3542         * testsuite/18_support/comparisons/algorithms/fallback.cc: New test.
3543
3544 2021-06-14  Jonathan Wakely  <jwakely@redhat.com>
3545
3546         PR libstdc++/101055
3547         * include/std/tuple: Use reserved form of attribute name.
3548         * testsuite/17_intro/headers/c++2011/all_attributes.cc: Add
3549         check for no_unique_address.
3550         * testsuite/17_intro/headers/c++2014/all_attributes.cc:
3551         Likewise.
3552         * testsuite/17_intro/headers/c++2017/all_attributes.cc:
3553         Likewise.
3554
3555 2021-06-11  Jonathan Wakely  <jwakely@redhat.com>
3556
3557         * include/bits/fs_path.h (operator==, operator<=>): Use new
3558         _S_compare function.
3559         (path::_S_compare): New function to call path::compare in a
3560         context where path::iterator is complete.
3561         * include/experimental/bits/fs_path.h (operator<, operator==):
3562         Define after path::iterator is complete.
3563         * testsuite/27_io/filesystem/path/native/conv_c++23.cc: New
3564         test.
3565         * testsuite/experimental/filesystem/path/native/conv_c++23.cc:
3566         New test.
3567
3568 2021-06-09  Thomas Rodgers  <rodgert@appliantology.com>
3569
3570         * testsuite/29_atomics/atomic_ref/wait_notify.cc: Guard
3571         test logic with constexpr check for is_always_lock_free.
3572
3573 2021-06-09  Jonathan Wakely  <jwakely@redhat.com>
3574
3575         PR libstdc++/100982
3576         * include/std/optional (optional::operator=(const optional<U>&)):
3577         Fix value category used in is_assignable check.
3578         * testsuite/20_util/optional/assignment/100982.cc: New test.
3579
3580 2021-06-09  Jonathan Wakely  <jwakely@redhat.com>
3581
3582         * include/bits/allocator.h (allocator::is_always_equal): Deprecate.
3583         * include/bits/iterator_concepts.h (indirectly_readable_traits):
3584         Add LWG issue number to comment.
3585         * include/std/memory_resource (polymorphic_allocator::release):
3586         Deprecate.
3587         * testsuite/20_util/allocator/requirements/typedefs.cc: Add
3588         dg-warning for deprecation. Also check std::allocator<void>.
3589
3590 2021-06-08  Thomas Rodgers  <rodgert@appliantology.com>
3591
3592         PR libstdc++/100889
3593         * include/bits/atomic_base.h (atomic_ref<_Tp*>::wait):
3594         Change parameter type from _Tp to _Tp*.
3595         * testsuite/29_atomics/atomic_ref/wait_notify.cc: Extend
3596         coverage of types tested.
3597
3598 2021-06-08  Thomas Rodgers  <rodgert@appliantology.com>
3599
3600         * include/std/barrier (__tree_barrier::_M_arrive): Remove
3601         unnecessary hasher instantiation.
3602
3603 2021-06-08  Jonathan Wakely  <jwakely@redhat.com>
3604
3605         * include/experimental/propagate_const (swap): Constrain.
3606         * testsuite/experimental/propagate_const/swap/lwg3413.cc: New test.
3607
3608 2021-06-07  Avi Kivity  <avi@scylladb.com>
3609
3610         PR libstdc++/100900
3611         * include/std/ranges (elements_view::__iter_cat::_S_iter_cat):
3612         Add missing typename.
3613
3614 2021-06-07  Jonathan Wakely  <jwakely@redhat.com>
3615
3616         PR libstdc++/98842
3617         * include/std/optional (operator<=>(const optional<T>& const U&)):
3618         Add missing constraint and add workaround for template
3619         recursion.
3620         * testsuite/20_util/optional/relops/three_way.cc: Check that
3621         type without equality comparison cannot be compared when wrapped
3622         in std::optional.
3623
3624 2021-06-05  Jonathan Wakely  <jwakely@redhat.com>
3625
3626         PR libstdc++/100824
3627         * include/bits/ranges_base.h (_SSize): Return signed type.
3628         * testsuite/std/ranges/access/ssize.cc: Check with __int128.
3629
3630 2021-06-04  Jonathan Wakely  <jwakely@redhat.com>
3631
3632         * include/bits/ranges_base.h (_SSize): Return the result of
3633         ranges::size converted to the wider of make-signed-like-t<S> and
3634         ptrdiff_t, rather than the ranges different type.
3635         * testsuite/std/ranges/access/ssize.cc: Adjust expected result
3636         for an iota_view that uses an integer class type for its
3637         difference_type.
3638
3639 2021-06-04  Jonathan Wakely  <jwakely@redhat.com>
3640
3641         PR libstdc++/100824
3642         * include/bits/ranges_base.h (__member_data): Use __decay_copy.
3643         * testsuite/std/ranges/access/data.cc: Add testcase from PR.
3644
3645 2021-06-04  Jonathan Wakely  <jwakely@redhat.com>
3646
3647         PR libstdc++/100824
3648         * include/bits/iterator_concepts.h (__detail::__decay_copy)
3649         (__detail::__member_begin, __detail::__adl_begin): Move to
3650         namespace ranges::__cust_access.
3651         (__detail::__ranges_begin): Likewise, and rename to __begin.
3652         Remove redundant static assertion.
3653         * include/bits/ranges_base.h (_Begin, _End, _RBegin, _REnd):
3654         Use lvalue in noexcept specifier.
3655         (__as_const): Add non-deduced parameter for value category.
3656         (_CBegin, _CEnd, _CRBegin, _CREnd, _CData): Adjust uses of
3657         __as_const.
3658         (__member_size, __adl_size, __member_empty, __size0_empty):
3659         (__eq_iter_empty, __adl_data): Use lvalue objects in
3660         requirements.
3661         (__sentinel_size): Likewise. Add check for conversion to
3662         unsigned-like.
3663         (__member_data): Allow non-lvalue types to satisfy the concept,
3664         but use lvalue object in requirements.
3665         (_Size, _SSize): Remove forwarding to always use an lvalue.
3666         (_Data): Likewise. Add static assertion for arrays.
3667         * testsuite/std/ranges/access/cdata.cc: Adjust expected
3668         behaviour for rvalues. Add negative tests for ill-formed
3669         expressions.
3670         * testsuite/std/ranges/access/data.cc: Likewise.
3671         * testsuite/std/ranges/access/empty.cc: Adjust expected
3672         behaviour for rvalues.
3673         * testsuite/std/ranges/access/size.cc: Likewise.
3674
3675 2021-06-04  Tim Adye  <Tim.Adye@cern.ch>
3676
3677         * include/std/any (any::_Manager::_S_access): New static
3678         function to access the contained value.
3679         (any::emplace, __any_caster): Use _S_access member of the
3680         manager type.
3681
3682 2021-06-04  Jonathan Wakely  <jwakely@redhat.com>
3683
3684         * doc/xml/manual/status_cxx2020.xml:
3685         * doc/html/*: Regenerate.
3686         * include/bits/hashtable.h (__cpp_lib_generic_unordered_lookup):
3687         Define.
3688         * include/std/version (__cpp_lib_generic_unordered_lookup):
3689         Define.
3690         * testsuite/23_containers/unordered_map/operations/1.cc: Check
3691         feature test macro.
3692         * testsuite/23_containers/unordered_set/operations/1.cc:
3693         Likewise.
3694
3695 2021-06-03  Patrick Palka  <ppalka@redhat.com>
3696
3697         * include/bits/ranges_algo.h (__detail::__can_reread_output):
3698         Factor out this concept from ...
3699         (__unique_copy_fn::operator()): ... here.  Use the concept
3700         throughout.
3701         * testsuite/std/ranges/range.cc: Remove now ill-formed use
3702         of range_value_t on an output_range.
3703         * testsuite/util/testsuite_iterators.h (output_iterator_wrapper):
3704         Define value_type, pointer and reference member types to void.
3705
3706 2021-06-03  Patrick Palka  <ppalka@redhat.com>
3707
3708         PR libstdc++/100577
3709         * include/std/ranges (_RangeAdaptorClosure): Document
3710         _S_has_simple_call_op mechanism.
3711         (_RangeAdaptor): Document _S_has_simple_extra_args mechanism.
3712         (__closure_has_simple_call_op): New concept.
3713         (__adaptor_has_simple_extra_args): Likewise.
3714         (_Partial<_Adaptor, _Args...>): New partial specialization.
3715         (_Partial<_Adaptor, _Arg>): Likewise.
3716         (_Pipe<_Lhs, _Rhs>): Likewise.
3717         (views::_All::_S_has_simple_call_op): Define to true.
3718         (views::_Filter::_S_has_simple_extra_args): Likewise.
3719         (views::_Transform::_S_has_simple_extra_args): Likewise.
3720         (views::_Take::_S_has_simple_extra_args): Likewise.
3721         (views::_TakeWhile::_S_has_simple_extra_args): Likewise.
3722         (views::_Drop::_S_has_simple_extra_args): Likewise.
3723         (views::_DropWhile::_S_has_simple_extra_args): Likewise.
3724         (views::_Join::_S_has_simple_call_op): Likewise.
3725         (views::_Split): Document why we don't define
3726         _S_has_simple_extra_args to true for this adaptor.
3727         (views::_Common::_S_has_simple_call_op): Define to true.
3728         (views::_Reverse::_S_has_simple_call_op): Likewise.
3729         (views::_Elements::_S_has_simple_call_op): Likewise.
3730         * testsuite/std/ranges/adaptors/100577.cc: New test.
3731
3732 2021-06-02  Jonathan Wakely  <jwakely@redhat.com>
3733
3734         PR libstdc++/100863
3735         PR libstdc++/65816
3736         * include/bits/hashtable_policy.h (_Hashtable_ebo_helper):
3737         Value-initialize subobject.
3738         * testsuite/23_containers/unordered_map/allocator/default_init.cc:
3739         Remove XFAIL.
3740         * testsuite/23_containers/unordered_set/allocator/default_init.cc:
3741         Remove XFAIL.
3742
3743 2021-06-02  Jonathan Wakely  <jwakely@redhat.com>
3744
3745         PR libstdc++/96088
3746         * testsuite/23_containers/unordered_map/96088.cc: Adjust
3747         expected number of allocations.
3748         * testsuite/23_containers/unordered_set/96088.cc: Likewise.
3749
3750 2021-06-02  Jonathan Wakely  <jwakely@redhat.com>
3751
3752         * doc/xml/manual/status_cxxis29124.xml: Improve punctuation.
3753         * doc/xml/manual/status_cxxtr1.xml: Likewise.
3754         * doc/xml/manual/status_cxxtr24733.xml: Likewise.
3755         * doc/html/*: Regenerate.
3756
3757 2021-06-01  Patrick Palka  <ppalka@redhat.com>
3758
3759         PR c++/65816
3760         * testsuite/23_containers/deque/allocator/default_init.cc,
3761         testsuite/23_containers/forward_list/allocator/default_init.cc,
3762         testsuite/23_containers/list/allocator/default_init.cc,
3763         testsuite/23_containers/map/allocator/default_init.cc,
3764         testsuite/23_containers/set/allocator/default_init.cc,
3765         testsuite/23_containers/vector/allocator/default_init.cc,
3766         testsuite/23_containers/vector/bool/allocator/default_init.cc:
3767         Remove xfail.
3768
3769 2021-06-01  Jonathan Wakely  <jwakely@redhat.com>
3770
3771         * testsuite/23_containers/unordered_map/96088.cc: Change
3772         effective target to c++17.
3773         * testsuite/23_containers/unordered_set/96088.cc: Likewise.
3774
3775 2021-06-01  Jonathan Wakely  <jwakely@redhat.com>
3776
3777         * testsuite/22_locale/ctype/is/string/89728_neg.cc: Only test
3778         isblank for C++11 and later.
3779
3780 2021-06-01  Jonathan Wakely  <jwakely@redhat.com>
3781
3782         PR libstdc++/100833
3783         * include/bits/ranges_base.h (ranges::advance(iter, n, sentinel)):
3784         Fix return value for no-op case.
3785         * testsuite/24_iterators/range_operations/advance.cc: Test
3786         return values of three-argument overload.
3787
3788 2021-06-01  Jonathan Wakely  <jwakely@redhat.com>
3789
3790         PR libstdc++/99453
3791         * python/Makefile.am: Use archive name for printer hook if no
3792         dynamic library name is available.
3793         * python/Makefile.in: Regenerate.
3794
3795 2021-05-30  Gerald Pfeifer  <gerald@pfeifer.com>
3796
3797         * doc/xml/manual/abi.xml: Remove dead reference to "Intel
3798         Compilers for Linux: Compatibility with GNU Compilers" article.
3799         * doc/html/manual/abi.html: Regenerate.
3800
3801 2021-05-26  François Dumont  <fdumont@gcc.gnu.org>
3802
3803         * include/debug/formatter.h
3804         (_Error_formatter::_Parameter::_Named): New.
3805         (_Error_formatter::_Parameter::_Type): Inherit latter.
3806         (_Error_formatter::_Parameter::_M_integer): Likewise.
3807         (_Error_formatter::_Parameter::_M_string): Likewise.
3808         * src/c++11/debug.cc: Include <cstring>.
3809         (_Print_func_t): New.
3810         (print_raw(PrintContext&, const char*, ptrdiff_t)): New.
3811         (print_word): Use '%.*s' format in fprintf to render only expected number of chars.
3812         (pretty_print(PrintContext&, const char*, _Print_func_t)): New.
3813         (print_type): Rename in...
3814         (print_type_info): ...this. Use pretty_print.
3815         (print_address, print_integer): New.
3816         (print_named_name, print_iterator_constness, print_iterator_state): New.
3817         (print_iterator_seq_type): New.
3818         (print_named_field, print_type_field, print_instance_field, print_iterator_field): New.
3819         (print_field): Use latters.
3820         (print_quoted_named_name, print_type_type, print_type, print_instance): New.
3821         (print_string(PrintContext&, const char*, const _Parameter*, size_t)):
3822         Change signature to...
3823         (print_string(PrintContext&, const char*, ptrdiff_t, const _Parameter*, size_t)):
3824         ...this and adapt. Remove intermediate buffer to render input string.
3825         (print_string(PrintContext&, const char*, ptrdiff_t)): New.
3826
3827 2021-05-26  Jonathan Wakely  <jwakely@redhat.com>
3828
3829         PR libstdc++/100768
3830         * include/bits/ranges_base.h (advance, distance, next, prev):
3831         Replace function templates with function objects.
3832         * testsuite/24_iterators/headers/iterator/synopsis_c++20.cc:
3833         Adjust for changes to function objects.
3834         * testsuite/std/ranges/adaptors/elements.cc: Add using
3835         declarations for names from namespace ranges.
3836         * testsuite/std/ranges/adaptors/transform.cc: Likewise.
3837         * testsuite/24_iterators/range_operations/100768.cc: New test.
3838
3839 2021-05-24  François Dumont  <fdumont@gcc.gnu.org>
3840
3841         PR libstdc++/96088
3842         * include/bits/hashtable_policy.h (_Select2nd): New.
3843         (_NodeBuilder<>): New.
3844         (_ReuseOrAllocNode<>::operator()): Use variadic template args.
3845         (_AllocNode<>::operator()): Likewise.
3846         * include/bits/hashtable.h
3847         (_Hashtable<>::__node_builder_t): New.
3848         (_Hashtable<>::_M_insert_unique<>(_Kt&&, _Arg&&, const _NodeGenerator&)):
3849          New.
3850         (_Hashtable<>::_S_forward_key): New.
3851         (_Hashtable<>::_M_insert): Use latter.
3852         (_Hashtable<>::_M_insert(const_iterator, _Arg&&, const _NodeGenerator&, false_type)):
3853         Instantiate node first, compute hash code second.
3854         * testsuite/23_containers/unordered_map/96088.cc: New test.
3855         * testsuite/23_containers/unordered_multimap/96088.cc: New test.
3856         * testsuite/23_containers/unordered_multiset/96088.cc: New test.
3857         * testsuite/23_containers/unordered_set/96088.cc: New test.
3858         * testsuite/util/replacement_memory_operators.h
3859         (counter::_M_increment): New.
3860         (counter::_M_decrement): New.
3861         (counter::reset()): New.
3862
3863 2021-05-24  Patrick Palka  <ppalka@redhat.com>
3864
3865         PR libstdc++/100479
3866         * include/std/ranges (__detail::__non_propagating_cache): Move
3867         definition up to before that of _CachedPosition.  Make base
3868         class _Optional_base protected instead of private.  Add const
3869         overload for operator*.
3870         (__detail::_CachedPosition): Rewrite the partial specialization
3871         for forward ranges as a derived class of __non_propagating_cache.
3872         Remove the size constraint on the partial specialization for
3873         random access ranges.  Add copy/move/copy-assignment/move-assignment
3874         members to the offset partial specialization for random
3875         access ranges that propagate the cached value but additionally
3876         invalidate it in the source object on move.
3877         * testsuite/std/ranges/adaptors/100479.cc: New test.
3878
3879 2021-05-24  Jonathan Wakely  <jwakely@redhat.com>
3880
3881         * testsuite/25_algorithms/inplace_merge/constrained.cc: Qualify
3882         call to ranges::next.
3883         * testsuite/25_algorithms/is_sorted/constrained.cc: Likewise.
3884         * testsuite/25_algorithms/is_sorted_until/constrained.cc:
3885         Likewise.
3886         * testsuite/25_algorithms/swap_ranges/1.cc: Qualify call to
3887         swap_ranges.
3888
3889 2021-05-21  Patrick Palka  <ppalka@redhat.com>
3890
3891         PR libstdc++/100606
3892         * include/std/ranges (drop_while_view::begin): Assert the
3893         precondition added by LWG 3490.
3894
3895 2021-05-21  Patrick Palka  <ppalka@redhat.com>
3896
3897         PR libstdc++/100690
3898         * include/std/ranges (iota_view::_Sentinel::_M_distance_from):
3899         Split out this member function from ...
3900         (iota_view::_Sentinel::operator-): ... here, for sake of access
3901         control.
3902         * testsuite/std/ranges/iota/iota_view.cc (test05): New test.
3903
3904 2021-05-20  Jonathan Wakely  <jwakely@redhat.com>
3905
3906         * include/bits/random.tcc (__representable_as_double)
3907         (__p1_representable_as_double): Add "" to static asserts.
3908
3909 2021-05-20  Jonathan Wakely  <jwakely@redhat.com>
3910
3911         PR libstdc++/100676
3912         * include/bits/c++config (__glibcxx_assert_1): Rename to ...
3913         (__glibcxx_constexpr_assert): ... this.
3914         (__glibcxx_assert_impl): Use __glibcxx_constexpr_assert.
3915         (__glibcxx_assert): Define as either __glibcxx_constexpr_assert
3916         or __glibcxx_assert_impl.
3917         (__glibcxx_assert_2): Remove
3918         * include/debug/macros.h (_GLIBCXX_DEBUG_VERIFY_AT_F): Use
3919         __glibcxx_constexpr_assert instead of __glibcxx_assert_1.
3920         * testsuite/21_strings/basic_string_view/element_access/char/back_constexpr_neg.cc:
3921         Adjust expected error.
3922         * testsuite/21_strings/basic_string_view/element_access/char/constexpr_neg.cc:
3923         Likewise.
3924         * testsuite/21_strings/basic_string_view/element_access/char/front_constexpr_neg.cc:
3925         Likewise.
3926         Likewise.
3927         * testsuite/21_strings/basic_string_view/element_access/wchar_t/back_constexpr_neg.cc:
3928         Likewise.
3929         * testsuite/21_strings/basic_string_view/element_access/wchar_t/constexpr_neg.cc:
3930         Likewise.
3931         * testsuite/21_strings/basic_string_view/element_access/wchar_t/front_constexpr_neg.cc:
3932         Likewise.
3933         * testsuite/23_containers/span/back_neg.cc: Likewise.
3934         * testsuite/23_containers/span/front_neg.cc: Likewise.
3935         * testsuite/23_containers/span/index_op_neg.cc: Likewise.
3936
3937 2021-05-20  Patrick Palka  <ppalka@redhat.com>
3938
3939         PR libstdc++/100639
3940         * include/bits/stl_iterator.h (reverse_iterator::difference_type):
3941         In C++20 mode, define in terms of iter_difference_t as per P0896R4.
3942         (reverse_iterator::reference): Likewise, but with iter_reference_t.
3943         (reverse_iterator::value_type): Likewise, but with iter_value_t.
3944         * testsuite/std/ranges/adaptors/reverse.cc (test08): New test.
3945         * testsuite/24_iterators/reverse_iterator/100639.cc: New test.
3946
3947 2021-05-20  Joern Rennecke  <joern.rennecke@riscy-ip.com>
3948
3949         PR libstdc++/100361
3950         * include/std/charconv (to_chars): Hide the overloads for
3951         floating-point types for 16 bit targets.
3952         * src/c++17/floating_to_chars.cc: Don't compile for 16 bit targets.
3953         * testsuite/20_util/to_chars/double.cc: Run this test only on
3954         size32plus targets.
3955         * testsuite/20_util/to_chars/float.cc: Likewise.
3956         * testsuite/20_util/to_chars/long_double.cc: Likewise.
3957
3958 2021-05-18  Patrick Palka  <ppalka@redhat.com>
3959
3960         PR libstdc++/100631
3961         * include/std/ranges (elements_view::_Sentinel::operator-): Use
3962         _M_distance_from in the other operator- overload too.
3963         * testsuite/std/ranges/adaptors/elements.cc (test06): Augment test.
3964
3965 2021-05-18  Thomas Schwinge  <thomas@codesourcery.com>
3966
3967         * testsuite/lib/prune.exp: Add note about 'dg-note'.
3968
3969 2021-05-18  Patrick Palka  <ppalka@redhat.com>
3970
3971         PR libstdc++/100475
3972         * include/std/ranges (__box::__box): Use non-list-initialization
3973         in member initializer list of in-place constructor of the
3974         partial specialization for semiregular types.
3975         (__box::operator->): Use std::__addressof.
3976         * testsuite/std/ranges/adaptors/detail/semiregular_box.cc
3977         (test02): New test.
3978         * testsuite/std/ranges/single_view.cc (test04): New test.
3979
3980 2021-05-18  Patrick Palka  <ppalka@redhat.com>
3981
3982         PR libstdc++/100621
3983         * include/std/ranges (reverse_view::_S_needs_cached_begin):
3984         Set to true if the underlying non-common random-access range
3985         doesn't have a sized sentinel.
3986
3987 2021-05-18  Patrick Palka  <ppalka@redhat.com>
3988
3989         PR libstdc++/100631
3990         * include/std/ranges (elements_view::_Iterator): Also befriend
3991         _Sentinel<!_Const>.
3992         (elements_view::_Sentinel::_M_equal): Templatize.
3993         (elements_view::_Sentinel::_M_distance_from): Split out from ...
3994         (elements_view::_Sentinel::operator-): ... here.  Depend on
3995         _Base2 instead of _Base in the return type.
3996         * testsuite/std/ranges/adaptors/elements.cc (test06, test07):
3997         New tests.
3998
3999 2021-05-17  Thomas Rodgers  <rodgert@twrodgers.com>
4000
4001         * include/bits/atomic_wait.h (__waiter::_M_do_wait_v): loop
4002         until value change observed.
4003         (__waiter_base::_M_laundered): New member.
4004         (__waiter_base::_M_notify): Check _M_laundered to determine
4005         whether to wake one or all.
4006         (__detail::__atomic_compare): Return true if call to
4007         __builtin_memcmp() == 0.
4008         (__waiter_base::_S_do_spin_v): Adjust predicate.
4009         * testsuite/29_atomics/atomic/wait_notify/100334.cc: New
4010         test.
4011
4012 2021-05-17  Jonathan Wakely  <jwakely@redhat.com>
4013
4014         PR libstdc++/100630
4015         * include/experimental/bits/fs_path.h (__is_constructible_from):
4016         Test construction from a const lvalue, not an rvalue.
4017         * testsuite/27_io/filesystem/path/construct/100630.cc: New test.
4018         * testsuite/experimental/filesystem/path/construct/100630.cc:
4019         New test.
4020
4021 2021-05-17  Antony Polukhin  <antoshkka@gmail.com>
4022
4023         PR libstdc++/89728
4024         * include/bits/locale_facets.h (ctype<basic_string<C,T,A>>):
4025         Declare (but do not define) partial specialization.
4026         * testsuite/22_locale/ctype/is/string/89728_neg.cc: New test.
4027
4028 2021-05-17  Jonathan Wakely  <jwakely@redhat.com>
4029
4030         * include/std/thread (jthread::_S_create): Fix static assert
4031         message.
4032         * testsuite/30_threads/jthread/95989.cc: Re-enable test.
4033         * testsuite/30_threads/jthread/jthread.cc: Do not require
4034         pthread effective target.
4035         * testsuite/30_threads/jthread/2.cc: Moved to...
4036         * testsuite/30_threads/jthread/version.cc: ...here.
4037
4038 2021-05-17  Jonathan Wakely  <jwakely@redhat.com>
4039
4040         * doc/Makefile.am: Simplify doxygen recipes and use --latex_cmd.
4041         * doc/Makefile.in: Regenerate.
4042         * doc/doxygen/user.cfg.in (LATEX_CMD_NAME): Add placeholder
4043         value.
4044         * scripts/run_doxygen (print_usage): Always print to stdout and
4045         do not exit.
4046         (fail): New function for exiting on error.
4047         (parse_options): Handle --latex_cmd. Do not treat --help the
4048         same as errors. Simplify handling of required arguments.
4049
4050 2021-05-12  Jonathan Wakely  <jwakely@redhat.com>
4051
4052         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc:
4053         Increase dg-timeout-factor to 4. Fix -Wunused-parameter
4054         warnings. Replace bitwise AND with logical AND in loop
4055         condition.
4056         * testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc:
4057         Replace bitwise AND with logical AND in loop condition.
4058         * testsuite/util/pstl/test_utils.h: Remove unused parameter
4059         names.
4060
4061 2021-05-11  Patrick Palka  <ppalka@redhat.com>
4062
4063         * src/c++17/ryu/LOCAL_PATCHES: Update.
4064         * src/c++17/ryu/ryu_generic_128.h: Remove extern "C".
4065         Remove declarations for never-defined functions.
4066         * testsuite/20_util/to_chars/4.cc: New test.
4067
4068 2021-05-11  Jonathan Wakely  <jwakely@redhat.com>
4069
4070         * testsuite/20_util/headers/memory/synopsis.cc: Define C++98
4071         alternative for macro.
4072         * testsuite/20_util/shared_ptr/creation/99006.cc: Add effective
4073         target keyword.
4074         * testsuite/25_algorithms/copy/debug/99402.cc: Avoid C++11
4075         syntax.
4076
4077 2021-05-11  Jonathan Wakely  <jwakely@redhat.com>
4078
4079         * include/bits/allocator.h (allocator<void>) [C++20]: Add
4080         missing noexcept to constructor. Restore missing POCMA and
4081         is_always_equal_traits.
4082         [C++17]: Make construct and destroy members private and
4083         declare allocator_traits as a friend.
4084         * include/bits/memoryfwd.h (allocator_traits): Declare.
4085         * include/ext/malloc_allocator.h (malloc_allocator::allocate):
4086         Add nodiscard attribute. Add static assertion for LWG 3307.
4087         * include/ext/new_allocator.h (new_allocator::allocate): Add
4088         static assertion for LWG 3307.
4089         * testsuite/20_util/allocator/void.cc: Check that converting
4090         constructor is noexcept. Check for propagation traits and
4091         size_type and difference_type. Check that pointer and
4092         const_pointer are gone in C++20.
4093
4094 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
4095
4096         * include/std/stop_token: Remove TODO comment.
4097
4098 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
4099
4100         * include/bits/shared_ptr_base.h (__shared_count(unique_ptr&&)):
4101         Initialize a non-reference deleter from an rvalue, as per LWG
4102         3548.
4103         (__shared_ptr::_UniqCompatible): Add missing constraint.
4104         * testsuite/20_util/shared_ptr/cons/lwg3548.cc: New test.
4105         * testsuite/20_util/shared_ptr/cons/unique_ptr_deleter.cc: Check
4106         constraints.
4107
4108 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
4109
4110         * testsuite/17_intro/headers/c++2017/all_attributes.cc: Remove
4111         -std=gnu++17 from dg-options directive.
4112         * testsuite/17_intro/headers/c++2017/all_no_exceptions.cc:
4113         Likewise.
4114         * testsuite/17_intro/headers/c++2017/all_pedantic_errors.cc:
4115         Likewise.
4116         * testsuite/17_intro/headers/c++2017/operator_names.cc:
4117         Likewise.
4118         * testsuite/17_intro/headers/c++2017/parallel_mode.cc: Likewise.
4119         * testsuite/17_intro/headers/c++2017/stdc++.cc: Likewise.
4120         * testsuite/17_intro/headers/c++2017/stdc++_multiple_inclusion.cc:
4121         Likewise.
4122         * testsuite/18_support/aligned_alloc/aligned_alloc.cc: Likewise.
4123         * testsuite/18_support/byte/81076.cc: Likewise.
4124         * testsuite/18_support/byte/global_neg.cc: Likewise.
4125         * testsuite/18_support/byte/ops.cc: Likewise.
4126         * testsuite/18_support/byte/requirements.cc: Likewise.
4127         * testsuite/18_support/headers/cfloat/values_c++17.cc: Likewise.
4128         * testsuite/18_support/launder/1.cc: Likewise.
4129         * testsuite/18_support/launder/nodiscard.cc: Likewise.
4130         * testsuite/18_support/launder/requirements.cc: Likewise.
4131         * testsuite/18_support/launder/requirements_neg.cc: Likewise.
4132         * testsuite/18_support/new_aligned.cc: Likewise.
4133         * testsuite/18_support/uncaught_exceptions/uncaught_exceptions.cc:
4134         Likewise.
4135         * testsuite/19_diagnostics/error_code/is_error_code_v.cc:
4136         Likewise.
4137         * testsuite/19_diagnostics/error_condition/hash.cc: Likewise.
4138         * testsuite/20_util/addressof/requirements/constexpr.cc:
4139         Likewise.
4140         * testsuite/20_util/as_const/1.cc: Likewise.
4141         * testsuite/20_util/as_const/rvalue_neg.cc: Likewise.
4142         * testsuite/20_util/bind/83427.cc: Likewise.
4143         * testsuite/20_util/bind/is_placeholder_v.cc: Likewise.
4144         * testsuite/20_util/bool_constant/requirements.cc: Likewise.
4145         * testsuite/20_util/duration/arithmetic/constexpr_c++17.cc:
4146         Likewise.
4147         * testsuite/20_util/duration/requirements/treat_as_floating_point_v.cc:
4148         Likewise.
4149         * testsuite/20_util/duration_cast/rounding.cc: Likewise.
4150         * testsuite/20_util/enable_shared_from_this/members/weak_from_this.cc:
4151         Likewise.
4152         * testsuite/20_util/from_chars/1_neg.cc: Likewise.
4153         * testsuite/20_util/from_chars/requirements.cc: Likewise.
4154         * testsuite/20_util/function/91456.cc: Likewise.
4155         * testsuite/20_util/function/cons/deduction.cc: Likewise.
4156         * testsuite/20_util/function_objects/83607.cc: Likewise.
4157         * testsuite/20_util/function_objects/invoke/59768.cc: Likewise.
4158         * testsuite/20_util/function_objects/mem_fn/80478.cc: Likewise.
4159         * testsuite/20_util/function_objects/not_fn/1.cc: Likewise.
4160         * testsuite/20_util/function_objects/not_fn/87538.cc: Likewise.
4161         * testsuite/20_util/has_unique_object_representations/requirements/explicit_instantiation.cc:
4162         Likewise.
4163         * testsuite/20_util/has_unique_object_representations/requirements/typedefs.cc:
4164         Likewise.
4165         * testsuite/20_util/has_unique_object_representations/value.cc:
4166         Likewise.
4167         * testsuite/20_util/hash/nullptr.cc: Likewise.
4168         * testsuite/20_util/in_place/requirements.cc: Likewise.
4169         * testsuite/20_util/is_aggregate/incomplete_neg.cc: Likewise.
4170         * testsuite/20_util/is_aggregate/requirements/explicit_instantiation.cc:
4171         Likewise.
4172         * testsuite/20_util/is_aggregate/requirements/typedefs.cc:
4173         Likewise.
4174         * testsuite/20_util/is_aggregate/value.cc: Likewise.
4175         * testsuite/20_util/is_invocable/83395.cc: Likewise.
4176         * testsuite/20_util/is_invocable/91456.cc: Likewise.
4177         * testsuite/20_util/is_invocable/requirements/explicit_instantiation.cc:
4178         Likewise.
4179         * testsuite/20_util/is_invocable/requirements/typedefs.cc:
4180         Likewise.
4181         * testsuite/20_util/is_invocable/value.cc: Likewise.
4182         * testsuite/20_util/is_literal_type/deprecated-1z.cc: Likewise.
4183         * testsuite/20_util/is_nothrow_constructible/94003.cc: Likewise.
4184         * testsuite/20_util/is_nothrow_invocable/83395.cc: Likewise.
4185         * testsuite/20_util/is_nothrow_invocable/requirements/explicit_instantiation.cc:
4186         Likewise.
4187         * testsuite/20_util/is_nothrow_invocable/requirements/typedefs.cc: Likewise.
4188         * testsuite/20_util/is_nothrow_invocable/value.cc: Likewise.
4189         * testsuite/20_util/is_nothrow_swappable/requirements/explicit_instantiation.cc:
4190         Likewise.
4191         * testsuite/20_util/is_nothrow_swappable/requirements/typedefs.cc:
4192         Likewise.
4193         * testsuite/20_util/is_nothrow_swappable/value.cc: Likewise.
4194         * testsuite/20_util/is_nothrow_swappable_with/requirements/explicit_instantiation.cc:
4195         Likewise.
4196         * testsuite/20_util/is_nothrow_swappable_with/requirements/typedefs.cc:
4197         Likewise.
4198         * testsuite/20_util/is_nothrow_swappable_with/value.cc:
4199         Likewise.
4200         * testsuite/20_util/is_swappable/requirements/explicit_instantiation.cc:
4201         Likewise.
4202         * testsuite/20_util/is_swappable/requirements/typedefs.cc:
4203         Likewise.
4204         * testsuite/20_util/is_swappable/value.cc: Likewise.
4205         * testsuite/20_util/is_swappable_with/requirements/explicit_instantiation.cc:
4206         Likewise.
4207         * testsuite/20_util/is_swappable_with/requirements/typedefs.cc:
4208         Likewise.
4209         * testsuite/20_util/is_swappable_with/value.cc: Likewise.
4210         * testsuite/20_util/logical_traits/83134.cc: Likewise.
4211         * testsuite/20_util/logical_traits/requirements/explicit_instantiation.cc:
4212         Likewise.
4213         * testsuite/20_util/logical_traits/requirements/typedefs.cc:
4214         Likewise.
4215         * testsuite/20_util/logical_traits/value.cc: Likewise.
4216         * testsuite/20_util/pair/cons/deduction.cc: Likewise.
4217         * testsuite/20_util/pair/swap_cxx17.cc: Likewise.
4218         * testsuite/20_util/ratio/requirements/ratio_equal_v.cc:
4219         Likewise.
4220         * testsuite/20_util/reference_wrapper/83427.cc: Likewise.
4221         * testsuite/20_util/reference_wrapper/deduction.cc: Likewise.
4222         * testsuite/20_util/shared_ptr/casts/reinterpret.cc: Likewise.
4223         * testsuite/20_util/shared_ptr/cons/deduction.cc: Likewise.
4224         * testsuite/20_util/shared_ptr/requirements/weak_type.cc:
4225         Likewise.
4226         * testsuite/20_util/time_point/arithmetic/constexpr.cc:
4227         Likewise.
4228         * testsuite/20_util/time_point_cast/rounding.cc: Likewise.
4229         * testsuite/20_util/to_chars/3.cc: Likewise.
4230         * testsuite/20_util/to_chars/chars_format.cc: Likewise.
4231         * testsuite/20_util/to_chars/lwg3266.cc: Likewise.
4232         * testsuite/20_util/to_chars/requirements.cc: Likewise.
4233         * testsuite/20_util/tuple/78939.cc: Likewise.
4234         * testsuite/20_util/tuple/apply/1.cc: Likewise.
4235         * testsuite/20_util/tuple/apply/2.cc: Likewise.
4236         * testsuite/20_util/tuple/cons/deduction.cc: Likewise.
4237         * testsuite/20_util/tuple/make_from_tuple/1.cc: Likewise.
4238         * testsuite/20_util/tuple/make_from_tuple/2.cc: Likewise.
4239         * testsuite/20_util/tuple/swap_cxx17.cc: Likewise.
4240         * testsuite/20_util/tuple/tuple_size_v.cc: Likewise.
4241         * testsuite/20_util/unique_ptr/cons/deduction_neg.cc: Likewise.
4242         * testsuite/20_util/uses_allocator/requirements/uses_allocator_v.cc:
4243         Likewise.
4244         * testsuite/20_util/variable_templates_for_traits.cc: Likewise.
4245         * testsuite/20_util/void_t/1.cc: Likewise.
4246         * testsuite/20_util/weak_ptr/cons/deduction.cc: Likewise.
4247         * testsuite/24_iterators/container_access.cc: Likewise.
4248         * testsuite/24_iterators/headers/iterator/range_access_c++17.cc:
4249         Likewise.
4250         * testsuite/24_iterators/headers/iterator/synopsis_c++17.cc:
4251         Likewise.
4252         * testsuite/24_iterators/range_access/range_access_cpp17.cc:
4253         Likewise.
4254         * testsuite/24_iterators/range_access/range_access_cpp17_neg.cc:
4255         Likewise.
4256         * testsuite/26_numerics/gcd/gcd_neg.cc: Likewise.
4257         * testsuite/26_numerics/headers/cmath/functions_std_c++17.cc:
4258         Likewise.
4259         * testsuite/26_numerics/headers/cmath/hypot.cc: Likewise.
4260         * testsuite/26_numerics/headers/cmath/special_functions_global.cc:
4261         Likewise.
4262         * testsuite/26_numerics/lcm/1.cc: Likewise.
4263         * testsuite/26_numerics/lcm/lcm_neg.cc: Likewise.
4264         * testsuite/26_numerics/valarray/deduction.cc: Likewise.
4265         * testsuite/27_io/basic_ostream/inserters_other/char/lwg2221.cc:
4266         Likewise.
4267         * testsuite/27_io/manipulators/standard/char/quoted_sv.cc:
4268         Likewise.
4269         * testsuite/27_io/manipulators/standard/wchar_t/quoted_sv.cc:
4270         Likewise.
4271         * testsuite/27_io/types/4.cc: Likewise.
4272         * testsuite/28_regex/basic_regex/ctors/deduction.cc: Likewise.
4273         * testsuite/libstdc++-prettyprinters/91997.cc: Likewise.
4274         * testsuite/libstdc++-prettyprinters/cxx17.cc: Likewise.
4275
4276 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
4277
4278         * testsuite/20_util/function_objects/searchers.cc: Remove
4279         -std=gnu++17 from dg-options directive.
4280         * testsuite/20_util/specialized_algorithms/memory_management_tools/1.cc:
4281         Likewise.
4282         * testsuite/20_util/specialized_algorithms/memory_management_tools/destroy_neg.cc:
4283         Likewise.
4284         * testsuite/20_util/specialized_algorithms/uninitialized_value_construct/94540.cc:
4285         Likewise.
4286         * testsuite/20_util/specialized_algorithms/uninitialized_value_construct/94831.cc:
4287         Likewise.
4288         * testsuite/20_util/specialized_algorithms/uninitialized_value_construct_n/94540.cc:
4289         Likewise.
4290         * testsuite/20_util/specialized_algorithms/uninitialized_value_construct_n/sizes.cc:
4291         Likewise.
4292         * testsuite/20_util/unique_ptr/specialized_algorithms/swap_cxx17.cc:
4293         Likewise.
4294         * testsuite/25_algorithms/clamp/1.cc: Likewise.
4295         * testsuite/25_algorithms/clamp/2.cc: Likewise.
4296         * testsuite/25_algorithms/clamp/constexpr.cc: Likewise.
4297         * testsuite/25_algorithms/clamp/requirements/explicit_instantiation/1.cc:
4298         Likewise.
4299         * testsuite/25_algorithms/clamp/requirements/explicit_instantiation/pod.cc:
4300         Likewise.
4301         * testsuite/25_algorithms/for_each/for_each_n.cc: Likewise.
4302         * testsuite/25_algorithms/for_each/for_each_n_debug.cc:
4303         Likewise.
4304         * testsuite/25_algorithms/sample/1.cc: Likewise.
4305         * testsuite/25_algorithms/sample/2.cc: Likewise.
4306         * testsuite/25_algorithms/sample/3.cc: Likewise.
4307         * testsuite/25_algorithms/sample/81221.cc: Likewise.
4308         * testsuite/25_algorithms/search/searcher.cc: Likewise.
4309         * testsuite/26_numerics/exclusive_scan/1.cc: Likewise.
4310         * testsuite/26_numerics/inclusive_scan/1.cc: Likewise.
4311         * testsuite/26_numerics/reduce/1.cc: Likewise.
4312         * testsuite/26_numerics/reduce/2.cc: Likewise.
4313         * testsuite/26_numerics/transform_exclusive_scan/1.cc: Likewise.
4314         * testsuite/26_numerics/transform_inclusive_scan/1.cc: Likewise.
4315         * testsuite/26_numerics/transform_reduce/1.cc: Likewise.
4316
4317 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
4318
4319         * testsuite/23_containers/array/cons/deduction.cc: Remove
4320         -std=gnu++17 from dg-options directive.
4321         * testsuite/23_containers/array/cons/deduction_neg.cc: Likewise.
4322         * testsuite/23_containers/array/element_access/constexpr_c++17.cc:
4323         Likewise.
4324         * testsuite/23_containers/array/requirements/constexpr_iter.cc:
4325         Likewise.
4326         * testsuite/23_containers/array/specialized_algorithms/swap_cxx17.cc:
4327         Likewise.
4328         * testsuite/23_containers/deque/cons/deduction.cc: Likewise.
4329         * testsuite/23_containers/deque/modifiers/emplace/cxx17_return.cc:
4330         Likewise.
4331         * testsuite/23_containers/forward_list/cons/deduction.cc:
4332         Likewise.
4333         * testsuite/23_containers/forward_list/modifiers/emplace_cxx17_return.cc:
4334         Likewise.
4335         * testsuite/23_containers/list/cons/deduction.cc: Likewise.
4336         * testsuite/23_containers/list/modifiers/emplace/cxx17_return.cc:
4337         Likewise.
4338         * testsuite/23_containers/map/cons/deduction.cc: Likewise.
4339         * testsuite/23_containers/map/modifiers/extract.cc: Likewise.
4340         * testsuite/23_containers/map/modifiers/insert/83226.cc:
4341         Likewise.
4342         * testsuite/23_containers/map/modifiers/insert_or_assign/1.cc:
4343         Likewise.
4344         * testsuite/23_containers/map/modifiers/merge.cc: Likewise.
4345         * testsuite/23_containers/map/modifiers/try_emplace/1.cc:
4346         Likewise.
4347         * testsuite/23_containers/multimap/cons/deduction.cc: Likewise.
4348         * testsuite/23_containers/multimap/modifiers/extract.cc:
4349         Likewise.
4350         * testsuite/23_containers/multimap/modifiers/merge.cc: Likewise.
4351         * testsuite/23_containers/multiset/cons/deduction.cc: Likewise.
4352         * testsuite/23_containers/multiset/modifiers/extract.cc:
4353         Likewise.
4354         * testsuite/23_containers/multiset/modifiers/merge.cc: Likewise.
4355         * testsuite/23_containers/priority_queue/deduction.cc: Likewise.
4356         * testsuite/23_containers/queue/deduction.cc: Likewise.
4357         * testsuite/23_containers/queue/members/emplace_cxx17_return.cc:
4358         Likewise.
4359         * testsuite/23_containers/set/cons/deduction.cc: Likewise.
4360         * testsuite/23_containers/set/modifiers/extract.cc: Likewise.
4361         * testsuite/23_containers/set/modifiers/merge.cc: Likewise.
4362         * testsuite/23_containers/set/modifiers/node_swap.cc: Likewise.
4363         * testsuite/23_containers/stack/deduction.cc: Likewise.
4364         * testsuite/23_containers/stack/members/emplace_cxx17_return.cc:
4365         Likewise.
4366         * testsuite/23_containers/unordered_map/cons/deduction.cc:
4367         Likewise.
4368         * testsuite/23_containers/unordered_map/modifiers/extract.cc:
4369         Likewise.
4370         * testsuite/23_containers/unordered_map/modifiers/insert_or_assign.cc:
4371         Likewise.
4372         * testsuite/23_containers/unordered_map/modifiers/merge.cc:
4373         Likewise.
4374         * testsuite/23_containers/unordered_map/modifiers/try_emplace.cc:
4375         Likewise.
4376         * testsuite/23_containers/unordered_multimap/cons/deduction.cc:
4377         Likewise.
4378         * testsuite/23_containers/unordered_multimap/modifiers/extract.cc:
4379         Likewise.
4380         * testsuite/23_containers/unordered_multimap/modifiers/merge.cc:
4381         Likewise.
4382         * testsuite/23_containers/unordered_multiset/cons/deduction.cc:
4383         Likewise.
4384         * testsuite/23_containers/unordered_multiset/modifiers/extract.cc:
4385         Likewise.
4386         * testsuite/23_containers/unordered_multiset/modifiers/merge.cc:
4387         Likewise.
4388         * testsuite/23_containers/unordered_set/cons/deduction.cc:
4389         Likewise.
4390         * testsuite/23_containers/unordered_set/modifiers/extract.cc:
4391         Likewise.
4392         * testsuite/23_containers/unordered_set/modifiers/merge.cc:
4393         Likewise.
4394         * testsuite/23_containers/vector/bool/emplace_cxx17_return.cc:
4395         Likewise.
4396         * testsuite/23_containers/vector/cons/89164_c++17.cc: Likewise.
4397         * testsuite/23_containers/vector/cons/deduction.cc: Likewise.
4398         * testsuite/23_containers/vector/modifiers/emplace/cxx17_return.cc:
4399         Likewise.
4400
4401 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
4402
4403         * testsuite/21_strings/basic_string/79162.cc: Remove
4404         -std=gnu++17 from dg-options directive.
4405         * testsuite/21_strings/basic_string/cons/char/7.cc: Likewise.
4406         * testsuite/21_strings/basic_string/cons/char/79162.cc:
4407         Likewise.
4408         * testsuite/21_strings/basic_string/cons/char/86138.cc:
4409         Likewise.
4410         * testsuite/21_strings/basic_string/cons/char/9.cc: Likewise.
4411         * testsuite/21_strings/basic_string/cons/char/deduction.cc:
4412         Likewise.
4413         * testsuite/21_strings/basic_string/cons/char/moveable2_c++17.cc:
4414         Likewise.
4415         * testsuite/21_strings/basic_string/cons/wchar_t/7.cc: Likewise.
4416         * testsuite/21_strings/basic_string/cons/wchar_t/79162.cc:
4417         Likewise.
4418         * testsuite/21_strings/basic_string/cons/wchar_t/86138.cc:
4419         Likewise.
4420         * testsuite/21_strings/basic_string/cons/wchar_t/9.cc: Likewise.
4421         * testsuite/21_strings/basic_string/cons/wchar_t/deduction.cc:
4422         Likewise.
4423         * testsuite/21_strings/basic_string/cons/wchar_t/moveable2_c++17.cc:
4424         Likewise.
4425         * testsuite/21_strings/basic_string/hash/hash.cc: Likewise.
4426         * testsuite/21_strings/basic_string/lwg2758.cc: Likewise.
4427         * testsuite/21_strings/basic_string/lwg2946.cc: Likewise.
4428         * testsuite/21_strings/basic_string/modifiers/append/char/4.cc:
4429         Likewise.
4430         * testsuite/21_strings/basic_string/modifiers/append/wchar_t/4.cc:
4431         Likewise.
4432         * testsuite/21_strings/basic_string/modifiers/assign/char/4.cc:
4433         Likewise.
4434         * testsuite/21_strings/basic_string/modifiers/assign/wchar_t/4.cc:
4435         Likewise.
4436         * testsuite/21_strings/basic_string/modifiers/insert/char/3.cc:
4437         Likewise.
4438         * testsuite/21_strings/basic_string/modifiers/insert/wchar_t/3.cc:
4439         Likewise.
4440         * testsuite/21_strings/basic_string/modifiers/replace/char/7.cc:
4441         Likewise.
4442         * testsuite/21_strings/basic_string/modifiers/replace/wchar_t/7.cc:
4443         Likewise.
4444         * testsuite/21_strings/basic_string/operations/compare/char/2.cc:
4445         Likewise.
4446         * testsuite/21_strings/basic_string/operations/compare/wchar_t/2.cc:
4447         Likewise.
4448         * testsuite/21_strings/basic_string/operations/data/char/2.cc:
4449         Likewise.
4450         * testsuite/21_strings/basic_string/operations/data/char/86169.cc:
4451         Likewise.
4452         * testsuite/21_strings/basic_string/operations/data/wchar_t/2.cc:
4453         Likewise.
4454         * testsuite/21_strings/basic_string/operations/find/char/5.cc:
4455         Likewise.
4456         * testsuite/21_strings/basic_string/operations/find/wchar_t/5.cc:
4457         Likewise.
4458         * testsuite/21_strings/basic_string/operators/char/5.cc:
4459         Likewise.
4460         * testsuite/21_strings/basic_string/operators/wchar_t/5.cc:
4461         Likewise.
4462         * testsuite/21_strings/basic_string_view/capacity/1.cc:
4463         Likewise.
4464         * testsuite/21_strings/basic_string_view/capacity/empty_neg.cc:
4465         Likewise.
4466         * testsuite/21_strings/basic_string_view/cons/char/1.cc:
4467         Likewise.
4468         * testsuite/21_strings/basic_string_view/cons/char/2.cc:
4469         Likewise.
4470         * testsuite/21_strings/basic_string_view/cons/char/3.cc:
4471         Likewise.
4472         * testsuite/21_strings/basic_string_view/cons/char/nonnull.cc:
4473         Likewise.
4474         * testsuite/21_strings/basic_string_view/cons/wchar_t/1.cc:
4475         Likewise.
4476         * testsuite/21_strings/basic_string_view/cons/wchar_t/2.cc:
4477         Likewise.
4478         * testsuite/21_strings/basic_string_view/cons/wchar_t/3.cc:
4479         Likewise.
4480         * testsuite/21_strings/basic_string_view/cons/wchar_t/nonnull.cc:
4481         Likewise.
4482         * testsuite/21_strings/basic_string_view/element_access/char/1.cc:
4483         Likewise.
4484         * testsuite/21_strings/basic_string_view/element_access/char/2.cc:
4485         Likewise.
4486         * testsuite/21_strings/basic_string_view/element_access/char/back_constexpr_neg.cc:
4487         Likewise.
4488         * testsuite/21_strings/basic_string_view/element_access/char/constexpr.cc:
4489         Likewise.
4490         * testsuite/21_strings/basic_string_view/element_access/char/constexpr_neg.cc:
4491         Likewise.
4492         * testsuite/21_strings/basic_string_view/element_access/char/empty.cc:
4493         Likewise.
4494         * testsuite/21_strings/basic_string_view/element_access/char/front_back.cc:
4495         Likewise.
4496         * testsuite/21_strings/basic_string_view/element_access/char/front_back_constexpr.cc:
4497         Likewise.
4498         * testsuite/21_strings/basic_string_view/element_access/char/front_constexpr_neg.cc:
4499         Likewise.
4500         * testsuite/21_strings/basic_string_view/element_access/wchar_t/1.cc:
4501         Likewise.
4502         * testsuite/21_strings/basic_string_view/element_access/wchar_t/2.cc:
4503         Likewise.
4504         * testsuite/21_strings/basic_string_view/element_access/wchar_t/back_constexpr_neg.cc:
4505         Likewise.
4506         * testsuite/21_strings/basic_string_view/element_access/wchar_t/constexpr.cc:
4507         Likewise.
4508         * testsuite/21_strings/basic_string_view/element_access/wchar_t/constexpr_neg.cc:
4509         Likewise.
4510         * testsuite/21_strings/basic_string_view/element_access/wchar_t/empty.cc:
4511         Likewise.
4512         * testsuite/21_strings/basic_string_view/element_access/wchar_t/front_back.cc:
4513         Likewise.
4514         * testsuite/21_strings/basic_string_view/element_access/wchar_t/front_constexpr_neg.cc:
4515         Likewise.
4516         * testsuite/21_strings/basic_string_view/include.cc: Likewise.
4517         * testsuite/21_strings/basic_string_view/inserters/94051.cc:
4518         Likewise.
4519         * testsuite/21_strings/basic_string_view/inserters/char/1.cc:
4520         Likewise.
4521         * testsuite/21_strings/basic_string_view/inserters/char/2.cc:
4522         Likewise.
4523         * testsuite/21_strings/basic_string_view/inserters/char/3.cc:
4524         Likewise.
4525         * testsuite/21_strings/basic_string_view/inserters/pod/10081-out.cc:
4526         Likewise.
4527         * testsuite/21_strings/basic_string_view/inserters/wchar_t/1.cc:
4528         Likewise.
4529         * testsuite/21_strings/basic_string_view/inserters/wchar_t/2.cc:
4530         Likewise.
4531         * testsuite/21_strings/basic_string_view/inserters/wchar_t/3.cc:
4532         Likewise.
4533         * testsuite/21_strings/basic_string_view/literals/types-char8_t.cc:
4534         Likewise.
4535         * testsuite/21_strings/basic_string_view/literals/types.cc:
4536         Likewise.
4537         * testsuite/21_strings/basic_string_view/literals/values-char8_t.cc:
4538         Likewise.
4539         * testsuite/21_strings/basic_string_view/literals/values.cc:
4540         Likewise.
4541         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/char/1.cc:
4542         Likewise.
4543         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/wchar_t/1.cc:
4544         Likewise.
4545         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/char/1.cc:
4546         Likewise.
4547         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/wchar_t/1.cc:
4548         Likewise.
4549         * testsuite/21_strings/basic_string_view/modifiers/swap/char/1.cc:
4550         Likewise.
4551         * testsuite/21_strings/basic_string_view/modifiers/swap/wchar_t/1.cc:
4552         Likewise.
4553         * testsuite/21_strings/basic_string_view/operations/compare/char/1.cc:
4554         Likewise.
4555         * testsuite/21_strings/basic_string_view/operations/compare/char/13650.cc:
4556         Likewise.
4557         * testsuite/21_strings/basic_string_view/operations/compare/char/2.cc:
4558         Likewise.
4559         * testsuite/21_strings/basic_string_view/operations/compare/char/70483.cc:
4560         Likewise.
4561         * testsuite/21_strings/basic_string_view/operations/compare/char/nonnull.cc:
4562         Likewise.
4563         * testsuite/21_strings/basic_string_view/operations/compare/wchar_t/1.cc:
4564         Likewise.
4565         * testsuite/21_strings/basic_string_view/operations/compare/wchar_t/13650.cc:
4566         Likewise.
4567         * testsuite/21_strings/basic_string_view/operations/compare/wchar_t/2.cc:
4568         Likewise.
4569         * testsuite/21_strings/basic_string_view/operations/copy/char/1.cc:
4570         Likewise.
4571         * testsuite/21_strings/basic_string_view/operations/copy/char/2.cc:
4572         Likewise.
4573         * testsuite/21_strings/basic_string_view/operations/copy/wchar_t/1.cc:
4574         Likewise.
4575         * testsuite/21_strings/basic_string_view/operations/copy/wchar_t/2.cc:
4576         Likewise.
4577         * testsuite/21_strings/basic_string_view/operations/data/char/1.cc:
4578         Likewise.
4579         * testsuite/21_strings/basic_string_view/operations/data/wchar_t/1.cc:
4580         Likewise.
4581         * testsuite/21_strings/basic_string_view/operations/find/char/1.cc:
4582         Likewise.
4583         * testsuite/21_strings/basic_string_view/operations/find/char/2.cc:
4584         Likewise.
4585         * testsuite/21_strings/basic_string_view/operations/find/char/3.cc:
4586         Likewise.
4587         * testsuite/21_strings/basic_string_view/operations/find/char/4.cc:
4588         Likewise.
4589         * testsuite/21_strings/basic_string_view/operations/find/char/nonnull.cc:
4590         Likewise.
4591         * testsuite/21_strings/basic_string_view/operations/find/wchar_t/1.cc:
4592         Likewise.
4593         * testsuite/21_strings/basic_string_view/operations/find/wchar_t/2.cc:
4594         Likewise.
4595         * testsuite/21_strings/basic_string_view/operations/find/wchar_t/3.cc:
4596         Likewise.
4597         * testsuite/21_strings/basic_string_view/operations/find/wchar_t/4.cc:
4598         Likewise.
4599         * testsuite/21_strings/basic_string_view/operations/rfind/char/1.cc:
4600         Likewise.
4601         * testsuite/21_strings/basic_string_view/operations/rfind/char/2.cc:
4602         Likewise.
4603         * testsuite/21_strings/basic_string_view/operations/rfind/char/3.cc:
4604         Likewise.
4605         * testsuite/21_strings/basic_string_view/operations/rfind/char/nonnull.cc:
4606         Likewise.
4607         * testsuite/21_strings/basic_string_view/operations/rfind/wchar_t/1.cc:
4608         Likewise.
4609         * testsuite/21_strings/basic_string_view/operations/rfind/wchar_t/2.cc:
4610         Likewise.
4611         * testsuite/21_strings/basic_string_view/operations/rfind/wchar_t/3.cc:
4612         Likewise.
4613         * testsuite/21_strings/basic_string_view/operations/string_conversion/1.cc:
4614         Likewise.
4615         * testsuite/21_strings/basic_string_view/operations/substr/char/1.cc:
4616         Likewise.
4617         * testsuite/21_strings/basic_string_view/operations/substr/char/83511.cc:
4618         Likewise.
4619         * testsuite/21_strings/basic_string_view/operations/substr/wchar_t/1.cc:
4620         Likewise.
4621         * testsuite/21_strings/basic_string_view/operations/substr/wchar_t/83511.cc:
4622         Likewise.
4623         * testsuite/21_strings/basic_string_view/operators/char/2.cc:
4624         Likewise.
4625         * testsuite/21_strings/basic_string_view/operators/char/89446.cc:
4626         Likewise.
4627         * testsuite/21_strings/basic_string_view/operators/wchar_t/2.cc:
4628         Likewise.
4629         * testsuite/21_strings/basic_string_view/operators/wchar_t/89446.cc:
4630         Likewise.
4631         * testsuite/21_strings/basic_string_view/range_access/char/1.cc:
4632         Likewise.
4633         * testsuite/21_strings/basic_string_view/range_access/wchar_t/1.cc:
4634         Likewise.
4635         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/1.cc:
4636         Likewise.
4637         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char/1.cc:
4638         Likewise.
4639         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char16_t/1.cc:
4640         Likewise.
4641         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char32_t/1.cc:
4642         Likewise.
4643         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char8_t/1.cc:
4644         Likewise.
4645         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/wchar_t/1.cc:
4646         Likewise.
4647         * testsuite/21_strings/basic_string_view/requirements/traits_neg.cc:
4648         Likewise.
4649         * testsuite/21_strings/basic_string_view/requirements/typedefs.cc:
4650         Likewise.
4651         * testsuite/21_strings/basic_string_view/typedefs.cc: Likewise.
4652         * testsuite/21_strings/basic_string_view/types/1.cc: Likewise.
4653         * testsuite/21_strings/char_traits/requirements/char/99181.cc:
4654         Likewise.
4655         * testsuite/21_strings/char_traits/requirements/constexpr_functions_c++17.cc:
4656
4657 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
4658
4659         * testsuite/20_util/memory_resource/1.cc: Remove -std=gnu++17
4660         from dg-options directive.
4661         * testsuite/20_util/memory_resource/2.cc: Likewise.
4662         * testsuite/20_util/monotonic_buffer_resource/1.cc: Likewise.
4663         * testsuite/20_util/monotonic_buffer_resource/93208.cc:
4664         Likewise.
4665         * testsuite/20_util/monotonic_buffer_resource/allocate.cc:
4666         Likewise.
4667         * testsuite/20_util/monotonic_buffer_resource/deallocate.cc:
4668         Likewise.
4669         * testsuite/20_util/monotonic_buffer_resource/release.cc:
4670         Likewise.
4671         * testsuite/20_util/monotonic_buffer_resource/upstream_resource.cc:
4672         Likewise.
4673         * testsuite/20_util/polymorphic_allocator/1.cc: Likewise.
4674         * testsuite/20_util/polymorphic_allocator/construct_pair.cc:
4675         Likewise.
4676         * testsuite/20_util/polymorphic_allocator/resource.cc: Likewise.
4677         * testsuite/20_util/polymorphic_allocator/select.cc: Likewise.
4678         * testsuite/20_util/synchronized_pool_resource/allocate.cc:
4679         Likewise.
4680         * testsuite/20_util/synchronized_pool_resource/allocate_single.cc:
4681         Likewise.
4682         * testsuite/20_util/synchronized_pool_resource/cons.cc:
4683         Likewise.
4684         * testsuite/20_util/synchronized_pool_resource/cons_single.cc:
4685         Likewise.
4686         * testsuite/20_util/synchronized_pool_resource/is_equal.cc:
4687         Likewise.
4688         * testsuite/20_util/synchronized_pool_resource/multithreaded.cc:
4689         Likewise.
4690         * testsuite/20_util/synchronized_pool_resource/options.cc:
4691         Likewise.
4692         * testsuite/20_util/synchronized_pool_resource/release.cc:
4693         Likewise.
4694         * testsuite/20_util/synchronized_pool_resource/release_single.cc:
4695         Likewise.
4696         * testsuite/20_util/unsynchronized_pool_resource/allocate-max-chunks.cc:
4697         Likewise.
4698         * testsuite/20_util/unsynchronized_pool_resource/allocate.cc:
4699         Likewise.
4700         * testsuite/20_util/unsynchronized_pool_resource/cons.cc:
4701         Likewise.
4702         * testsuite/20_util/unsynchronized_pool_resource/is_equal.cc:
4703         Likewise.
4704         * testsuite/20_util/unsynchronized_pool_resource/options.cc:
4705         Likewise.
4706         * testsuite/20_util/unsynchronized_pool_resource/release.cc:
4707         Likewise.
4708         * testsuite/21_strings/basic_string/types/pmr_typedefs.cc:
4709         Likewise.
4710         * testsuite/23_containers/deque/types/pmr_typedefs.cc: Likewise.
4711         * testsuite/23_containers/deque/types/pmr_typedefs_debug.cc:
4712         Likewise.
4713         * testsuite/23_containers/forward_list/pmr_typedefs.cc:
4714         Likewise.
4715         * testsuite/23_containers/forward_list/pmr_typedefs_debug.cc:
4716         Likewise.
4717         * testsuite/23_containers/list/pmr_typedefs.cc: Likewise.
4718         * testsuite/23_containers/list/pmr_typedefs_debug.cc: Likewise.
4719         * testsuite/23_containers/map/pmr_typedefs.cc: Likewise.
4720         * testsuite/23_containers/map/pmr_typedefs_debug.cc: Likewise.
4721         * testsuite/23_containers/multimap/pmr_typedefs.cc: Likewise.
4722         * testsuite/23_containers/multimap/pmr_typedefs_debug.cc:
4723         Likewise.
4724         * testsuite/23_containers/multiset/pmr_typedefs.cc: Likewise.
4725         * testsuite/23_containers/multiset/pmr_typedefs_debug.cc:
4726         Likewise.
4727         * testsuite/23_containers/set/pmr_typedefs.cc: Likewise.
4728         * testsuite/23_containers/set/pmr_typedefs_debug.cc: Likewise.
4729         * testsuite/23_containers/unordered_map/pmr_typedefs.cc:
4730         Likewise.
4731         * testsuite/23_containers/unordered_map/pmr_typedefs_debug.cc:
4732         Likewise.
4733         * testsuite/23_containers/unordered_multimap/pmr_typedefs.cc:
4734         Likewise.
4735         * testsuite/23_containers/unordered_multimap/pmr_typedefs_debug.cc:
4736         Likewise.
4737         * testsuite/23_containers/unordered_multiset/pmr_typedefs.cc:
4738         Likewise.
4739         * testsuite/23_containers/unordered_multiset/pmr_typedefs_debug.cc:
4740         Likewise.
4741         * testsuite/23_containers/unordered_set/pmr_typedefs.cc:
4742         Likewise.
4743         * testsuite/23_containers/unordered_set/pmr_typedefs_debug.cc:
4744         Likewise.
4745         * testsuite/23_containers/vector/pmr_typedefs.cc: Likewise.
4746         * testsuite/23_containers/vector/types/pmr_typedefs_debug.cc:
4747         Likewise.
4748         * testsuite/28_regex/match_results/pmr_typedefs.cc: Likewise.
4749
4750 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
4751
4752         * testsuite/29_atomics/atomic/69769.cc: Remove -std=gnu++17 from
4753         dg-options.
4754         * testsuite/29_atomics/atomic/is_always_lock_free.cc:
4755         * testsuite/29_atomics/atomic/requirements/typedefs.cc:
4756         * testsuite/29_atomics/atomic_integral/is_always_lock_free.cc:
4757         * testsuite/29_atomics/atomic_integral/requirements/typedefs.cc:
4758         * testsuite/30_threads/lock_guard/cons/deduction.cc: Likewise.
4759         * testsuite/30_threads/scoped_lock/cons/1.cc: Likewise.
4760         * testsuite/30_threads/scoped_lock/cons/deduction.cc: Likewise.
4761         * testsuite/30_threads/scoped_lock/requirements/explicit_instantiation.cc:
4762         Likewise.
4763         * testsuite/30_threads/scoped_lock/requirements/typedefs.cc:
4764         Likewise.
4765         * testsuite/30_threads/shared_lock/70766.cc: Likewise.
4766         * testsuite/30_threads/shared_mutex/cons/1.cc: Likewise.
4767         * testsuite/30_threads/shared_mutex/cons/assign_neg.cc:
4768         Likewise.
4769         * testsuite/30_threads/shared_mutex/cons/copy_neg.cc: Likewise.
4770         * testsuite/30_threads/shared_mutex/requirements/standard_layout.cc:
4771         Likewise.
4772         * testsuite/30_threads/shared_mutex/try_lock/1.cc: Likewise.
4773         * testsuite/30_threads/shared_mutex/try_lock/2.cc: Likewise.
4774         * testsuite/30_threads/shared_mutex/unlock/1.cc: Likewise.
4775         * testsuite/30_threads/unique_lock/cons/deduction.cc: Likewise.
4776
4777 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
4778
4779         * testsuite/20_util/any/assign/1.cc: Remove -std=gnu++17 from
4780         dg-options directive.
4781         * testsuite/20_util/any/assign/2.cc: Likewise.
4782         * testsuite/20_util/any/assign/emplace.cc: Likewise.
4783         * testsuite/20_util/any/assign/exception.cc: Likewise.
4784         * testsuite/20_util/any/assign/self.cc: Likewise.
4785         * testsuite/20_util/any/cons/1.cc: Likewise.
4786         * testsuite/20_util/any/cons/2.cc: Likewise.
4787         * testsuite/20_util/any/cons/90415.cc: Likewise.
4788         * testsuite/20_util/any/cons/92156.cc: Likewise.
4789         * testsuite/20_util/any/cons/aligned.cc: Likewise.
4790         * testsuite/20_util/any/cons/explicit.cc: Likewise.
4791         * testsuite/20_util/any/cons/in_place.cc: Likewise.
4792         * testsuite/20_util/any/cons/nontrivial.cc: Likewise.
4793         * testsuite/20_util/any/make_any.cc: Likewise.
4794         * testsuite/20_util/any/misc/any_cast.cc: Likewise.
4795         * testsuite/20_util/any/misc/any_cast_neg.cc: Likewise.
4796         * testsuite/20_util/any/misc/any_cast_no_rtti.cc: Likewise.
4797         * testsuite/20_util/any/misc/swap.cc: Likewise.
4798         * testsuite/20_util/any/modifiers/1.cc: Likewise.
4799         * testsuite/20_util/any/modifiers/83658.cc: Likewise.
4800         * testsuite/20_util/any/modifiers/92156.cc: Likewise.
4801         * testsuite/20_util/any/observers/type.cc: Likewise.
4802         * testsuite/20_util/any/requirements.cc: Likewise.
4803         * testsuite/20_util/any/typedefs.cc: Likewise.
4804         * testsuite/20_util/optional/77288.cc: Likewise.
4805         * testsuite/20_util/optional/84601.cc: Likewise.
4806         * testsuite/20_util/optional/assignment/1.cc: Likewise.
4807         * testsuite/20_util/optional/assignment/2.cc: Likewise.
4808         * testsuite/20_util/optional/assignment/3.cc: Likewise.
4809         * testsuite/20_util/optional/assignment/4.cc: Likewise.
4810         * testsuite/20_util/optional/assignment/5.cc: Likewise.
4811         * testsuite/20_util/optional/assignment/6.cc: Likewise.
4812         * testsuite/20_util/optional/assignment/7.cc: Likewise.
4813         * testsuite/20_util/optional/assignment/8.cc: Likewise.
4814         * testsuite/20_util/optional/assignment/9.cc: Likewise.
4815         * testsuite/20_util/optional/bad_access.cc: Likewise.
4816         * testsuite/20_util/optional/cons/77727.cc: Likewise.
4817         * testsuite/20_util/optional/cons/85642.cc: Likewise.
4818         * testsuite/20_util/optional/cons/copy.cc: Likewise.
4819         * testsuite/20_util/optional/cons/deduction.cc: Likewise.
4820         * testsuite/20_util/optional/cons/default.cc: Likewise.
4821         * testsuite/20_util/optional/cons/move.cc: Likewise.
4822         * testsuite/20_util/optional/cons/trivial.cc: Likewise.
4823         * testsuite/20_util/optional/cons/value.cc: Likewise.
4824         * testsuite/20_util/optional/cons/value_neg.cc: Likewise.
4825         * testsuite/20_util/optional/constexpr/cons/default.cc:
4826         Likewise.
4827         * testsuite/20_util/optional/constexpr/cons/value.cc: Likewise.
4828         * testsuite/20_util/optional/constexpr/in_place.cc: Likewise.
4829         * testsuite/20_util/optional/constexpr/make_optional.cc:
4830         Likewise.
4831         * testsuite/20_util/optional/constexpr/nullopt.cc: Likewise.
4832         * testsuite/20_util/optional/constexpr/observers/1.cc: Likewise.
4833         * testsuite/20_util/optional/constexpr/observers/2.cc: Likewise.
4834         * testsuite/20_util/optional/constexpr/observers/3.cc: Likewise.
4835         * testsuite/20_util/optional/constexpr/observers/4.cc: Likewise.
4836         * testsuite/20_util/optional/constexpr/observers/5.cc: Likewise.
4837         * testsuite/20_util/optional/constexpr/relops/1.cc: Likewise.
4838         * testsuite/20_util/optional/constexpr/relops/2.cc: Likewise.
4839         * testsuite/20_util/optional/constexpr/relops/3.cc: Likewise.
4840         * testsuite/20_util/optional/constexpr/relops/4.cc: Likewise.
4841         * testsuite/20_util/optional/constexpr/relops/5.cc: Likewise.
4842         * testsuite/20_util/optional/constexpr/relops/6.cc: Likewise.
4843         * testsuite/20_util/optional/hash.cc: Likewise.
4844         * testsuite/20_util/optional/in_place.cc: Likewise.
4845         * testsuite/20_util/optional/make_optional.cc: Likewise.
4846         * testsuite/20_util/optional/nullopt.cc: Likewise.
4847         * testsuite/20_util/optional/observers/1.cc: Likewise.
4848         * testsuite/20_util/optional/observers/2.cc: Likewise.
4849         * testsuite/20_util/optional/observers/3.cc: Likewise.
4850         * testsuite/20_util/optional/observers/4.cc: Likewise.
4851         * testsuite/20_util/optional/observers/5.cc: Likewise.
4852         * testsuite/20_util/optional/observers/6.cc: Likewise.
4853         * testsuite/20_util/optional/relops/1.cc: Likewise.
4854         * testsuite/20_util/optional/relops/2.cc: Likewise.
4855         * testsuite/20_util/optional/relops/3.cc: Likewise.
4856         * testsuite/20_util/optional/relops/4.cc: Likewise.
4857         * testsuite/20_util/optional/relops/5.cc: Likewise.
4858         * testsuite/20_util/optional/relops/6.cc: Likewise.
4859         * testsuite/20_util/optional/relops/7.cc: Likewise.
4860         * testsuite/20_util/optional/requirements.cc: Likewise.
4861         * testsuite/20_util/optional/swap/1.cc: Likewise.
4862         * testsuite/20_util/optional/swap/2.cc: Likewise.
4863         * testsuite/20_util/optional/typedefs.cc: Likewise.
4864         * testsuite/20_util/variant/80165.cc: Likewise.
4865         * testsuite/20_util/variant/85183.cc: Likewise.
4866         * testsuite/20_util/variant/86874.cc: Likewise.
4867         * testsuite/20_util/variant/87431.cc: Likewise.
4868         * testsuite/20_util/variant/87619.cc: Likewise.
4869         * testsuite/20_util/variant/91807.cc: Likewise.
4870         * testsuite/20_util/variant/any.cc: Likewise.
4871         * testsuite/20_util/variant/compile.cc: Likewise.
4872         * testsuite/20_util/variant/deduction.cc: Likewise.
4873         * testsuite/20_util/variant/exception_safety.cc: Likewise.
4874         * testsuite/20_util/variant/hash.cc: Likewise.
4875         * testsuite/20_util/variant/index_type.cc: Likewise.
4876         * testsuite/20_util/variant/relops/89851.cc: Likewise.
4877         * testsuite/20_util/variant/relops/90008.cc: Likewise.
4878         * testsuite/20_util/variant/run.cc: Likewise.
4879         * testsuite/20_util/variant/visit.cc: Likewise.
4880
4881 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
4882
4883         * testsuite/27_io/basic_filebuf/open/char/path.cc: Remove
4884         -std=gnu++17 from dg-options directive.
4885         * testsuite/27_io/basic_fstream/cons/char/path.cc: Likewise.
4886         * testsuite/27_io/basic_fstream/open/char/path.cc: Likewise.
4887         * testsuite/27_io/basic_ifstream/cons/char/path.cc: Likewise.
4888         * testsuite/27_io/basic_ifstream/open/char/path.cc: Likewise.
4889         * testsuite/27_io/basic_ofstream/cons/char/path.cc: Likewise.
4890         * testsuite/27_io/basic_ofstream/open/char/path.cc: Likewise.
4891         * testsuite/27_io/filesystem/directory_entry/86597.cc: Likewise.
4892         * testsuite/27_io/filesystem/directory_entry/lwg3171.cc:
4893         Likewise.
4894         * testsuite/27_io/filesystem/file_status/1.cc: Likewise.
4895         * testsuite/27_io/filesystem/filesystem_error/cons.cc: Likewise.
4896         * testsuite/27_io/filesystem/filesystem_error/copy.cc: Likewise.
4897         * testsuite/27_io/filesystem/iterators/91067.cc: Likewise.
4898         * testsuite/27_io/filesystem/iterators/caching.cc: Likewise.
4899         * testsuite/27_io/filesystem/iterators/directory_iterator.cc:
4900         Likewise.
4901         * testsuite/27_io/filesystem/iterators/pop.cc: Likewise.
4902         * testsuite/27_io/filesystem/iterators/recursion_pending.cc:
4903         Likewise.
4904         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
4905         Likewise.
4906         * testsuite/27_io/filesystem/operations/absolute.cc: Likewise.
4907         * testsuite/27_io/filesystem/operations/all.cc: Likewise.
4908         * testsuite/27_io/filesystem/operations/canonical.cc: Likewise.
4909         * testsuite/27_io/filesystem/operations/copy.cc: Likewise.
4910         * testsuite/27_io/filesystem/operations/copy_file.cc: Likewise.
4911         * testsuite/27_io/filesystem/operations/create_directories.cc:
4912         Likewise.
4913         * testsuite/27_io/filesystem/operations/create_directory.cc:
4914         Likewise.
4915         * testsuite/27_io/filesystem/operations/create_symlink.cc:
4916         Likewise.
4917         * testsuite/27_io/filesystem/operations/current_path.cc:
4918         Likewise.
4919         * testsuite/27_io/filesystem/operations/equivalent.cc: Likewise.
4920         * testsuite/27_io/filesystem/operations/exists.cc: Likewise.
4921         * testsuite/27_io/filesystem/operations/file_size.cc: Likewise.
4922         * testsuite/27_io/filesystem/operations/is_empty.cc: Likewise.
4923         * testsuite/27_io/filesystem/operations/last_write_time.cc:
4924         Likewise.
4925         * testsuite/27_io/filesystem/operations/permissions.cc:
4926         Likewise.
4927         * testsuite/27_io/filesystem/operations/proximate.cc: Likewise.
4928         * testsuite/27_io/filesystem/operations/read_symlink.cc:
4929         Likewise.
4930         * testsuite/27_io/filesystem/operations/relative.cc: Likewise.
4931         * testsuite/27_io/filesystem/operations/remove.cc: Likewise.
4932         * testsuite/27_io/filesystem/operations/remove_all.cc: Likewise.
4933         * testsuite/27_io/filesystem/operations/rename.cc: Likewise.
4934         * testsuite/27_io/filesystem/operations/resize_file.cc:
4935         Likewise.
4936         * testsuite/27_io/filesystem/operations/space.cc: Likewise.
4937         * testsuite/27_io/filesystem/operations/status.cc: Likewise.
4938         * testsuite/27_io/filesystem/operations/symlink_status.cc:
4939         Likewise.
4940         * testsuite/27_io/filesystem/operations/temp_directory_path.cc:
4941         Likewise.
4942         * testsuite/27_io/filesystem/operations/weakly_canonical.cc:
4943         Likewise.
4944         * testsuite/27_io/filesystem/path/append/path.cc: Likewise.
4945         * testsuite/27_io/filesystem/path/append/source.cc: Likewise.
4946         * testsuite/27_io/filesystem/path/assign/assign.cc: Likewise.
4947         * testsuite/27_io/filesystem/path/assign/copy.cc: Likewise.
4948         * testsuite/27_io/filesystem/path/compare/compare.cc: Likewise.
4949         * testsuite/27_io/filesystem/path/compare/lwg2936.cc: Likewise.
4950         * testsuite/27_io/filesystem/path/compare/path.cc: Likewise.
4951         * testsuite/27_io/filesystem/path/compare/strings.cc: Likewise.
4952         * testsuite/27_io/filesystem/path/concat/92853.cc: Likewise.
4953         * testsuite/27_io/filesystem/path/concat/94063.cc: Likewise.
4954         * testsuite/27_io/filesystem/path/concat/path.cc: Likewise.
4955         * testsuite/27_io/filesystem/path/concat/strings.cc: Likewise.
4956         * testsuite/27_io/filesystem/path/construct/80762.cc: Likewise.
4957         * testsuite/27_io/filesystem/path/construct/90281.cc: Likewise.
4958         * testsuite/27_io/filesystem/path/construct/90634.cc: Likewise.
4959         * testsuite/27_io/filesystem/path/construct/copy.cc: Likewise.
4960         * testsuite/27_io/filesystem/path/construct/default.cc:
4961         Likewise.
4962         * testsuite/27_io/filesystem/path/construct/format.cc: Likewise.
4963         * testsuite/27_io/filesystem/path/construct/locale.cc: Likewise.
4964         * testsuite/27_io/filesystem/path/construct/range.cc: Likewise.
4965         * testsuite/27_io/filesystem/path/construct/string_view.cc:
4966         Likewise.
4967         * testsuite/27_io/filesystem/path/decompose/extension.cc:
4968         Likewise.
4969         * testsuite/27_io/filesystem/path/decompose/filename.cc:
4970         Likewise.
4971         * testsuite/27_io/filesystem/path/decompose/parent_path.cc:
4972         Likewise.
4973         * testsuite/27_io/filesystem/path/decompose/relative_path.cc:
4974         Likewise.
4975         * testsuite/27_io/filesystem/path/decompose/root_directory.cc:
4976         Likewise.
4977         * testsuite/27_io/filesystem/path/decompose/root_name.cc:
4978         Likewise.
4979         * testsuite/27_io/filesystem/path/decompose/root_path.cc:
4980         Likewise.
4981         * testsuite/27_io/filesystem/path/decompose/stem.cc: Likewise.
4982         * testsuite/27_io/filesystem/path/factory/u8path-char8_t.cc:
4983         Likewise.
4984         * testsuite/27_io/filesystem/path/factory/u8path.cc: Likewise.
4985         * testsuite/27_io/filesystem/path/generation/normal.cc:
4986         Likewise.
4987         * testsuite/27_io/filesystem/path/generation/normal2.cc:
4988         Likewise.
4989         * testsuite/27_io/filesystem/path/generation/proximate.cc:
4990         Likewise.
4991         * testsuite/27_io/filesystem/path/generation/relative.cc:
4992         Likewise.
4993         * testsuite/27_io/filesystem/path/generic/94242.cc: Likewise.
4994         * testsuite/27_io/filesystem/path/generic/generic_string.cc:
4995         Likewise.
4996         * testsuite/27_io/filesystem/path/generic/utf.cc: Likewise.
4997         * testsuite/27_io/filesystem/path/generic/wchar_t.cc: Likewise.
4998         * testsuite/27_io/filesystem/path/io/dr2989.cc: Likewise.
4999         * testsuite/27_io/filesystem/path/itr/components.cc: Likewise.
5000         * testsuite/27_io/filesystem/path/itr/traversal.cc: Likewise.
5001         * testsuite/27_io/filesystem/path/modifiers/clear.cc: Likewise.
5002         * testsuite/27_io/filesystem/path/modifiers/make_preferred.cc:
5003         Likewise.
5004         * testsuite/27_io/filesystem/path/modifiers/remove_filename.cc:
5005         Likewise.
5006         * testsuite/27_io/filesystem/path/modifiers/replace_extension.cc:
5007         Likewise.
5008         * testsuite/27_io/filesystem/path/modifiers/replace_filename.cc:
5009         Likewise.
5010         * testsuite/27_io/filesystem/path/modifiers/swap.cc: Likewise.
5011         * testsuite/27_io/filesystem/path/native/alloc.cc: Likewise.
5012         * testsuite/27_io/filesystem/path/native/string-char8_t.cc:
5013         Likewise.
5014         * testsuite/27_io/filesystem/path/native/string.cc: Likewise.
5015         * testsuite/27_io/filesystem/path/nonmember/append.cc: Likewise.
5016         * testsuite/27_io/filesystem/path/nonmember/cmp.cc: Likewise.
5017         * testsuite/27_io/filesystem/path/nonmember/hash_value.cc:
5018         Likewise.
5019         * testsuite/27_io/filesystem/path/query/empty.cc: Likewise.
5020         * testsuite/27_io/filesystem/path/query/empty_neg.cc:
5021         * testsuite/27_io/filesystem/path/query/has_extension.cc:
5022         Likewise.
5023         * testsuite/27_io/filesystem/path/query/has_filename.cc:
5024         Likewise.
5025         * testsuite/27_io/filesystem/path/query/has_parent_path.cc:
5026         Likewise.
5027         * testsuite/27_io/filesystem/path/query/has_relative_path.cc:
5028         Likewise.
5029         * testsuite/27_io/filesystem/path/query/has_root_directory.cc:
5030         Likewise.
5031         * testsuite/27_io/filesystem/path/query/has_root_name.cc:
5032         Likewise.
5033         * testsuite/27_io/filesystem/path/query/has_root_path.cc:
5034         Likewise.
5035         * testsuite/27_io/filesystem/path/query/has_stem.cc: Likewise.
5036         * testsuite/27_io/filesystem/path/query/is_absolute.cc:
5037         Likewise.
5038         * testsuite/27_io/filesystem/path/query/is_relative.cc:
5039         Likewise.
5040         * testsuite/experimental/filesystem/path/construct/string_view.cc:
5041         Likewise.
5042
5043 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
5044
5045         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc:
5046         Remove -std=gnu++17 from dg-options.
5047         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc:
5048         Likewise.
5049         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_fill_destroy.cc:
5050         Likewise.
5051         * testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc:
5052         Likewise.
5053         * testsuite/25_algorithms/pstl/alg_merge/merge.cc: Likewise.
5054         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc:
5055         Likewise.
5056         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc:
5057         Likewise.
5058         * testsuite/25_algorithms/pstl/alg_modifying_operations/fill.cc:
5059         Likewise.
5060         * testsuite/25_algorithms/pstl/alg_modifying_operations/generate.cc:
5061         Likewise.
5062         * testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc:
5063         Likewise.
5064         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc:
5065         Likewise.
5066         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc:
5067         Likewise.
5068         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc:
5069         Likewise.
5070         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove_copy.cc:
5071         Likewise.
5072         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace.cc:
5073         Likewise.
5074         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc:
5075         Likewise.
5076         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc:
5077         Likewise.
5078         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc:
5079         Likewise.
5080         * testsuite/25_algorithms/pstl/alg_modifying_operations/swap_ranges.cc:
5081         Likewise.
5082         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_binary.cc:
5083         Likewise.
5084         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_unary.cc:
5085         Likewise.
5086         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc:
5087         Likewise.
5088         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc:
5089         Likewise.
5090         * testsuite/25_algorithms/pstl/alg_nonmodifying/adjacent_find.cc:
5091         Likewise.
5092         * testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc:
5093         Likewise.
5094         * testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc:
5095         Likewise.
5096         * testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc:
5097         Likewise.
5098         * testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc:
5099         Likewise.
5100         * testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc:
5101         Likewise.
5102         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc:
5103         Likewise.
5104         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc:
5105         Likewise.
5106         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc:
5107         Likewise.
5108         * testsuite/25_algorithms/pstl/alg_nonmodifying/for_each.cc:
5109         Likewise.
5110         * testsuite/25_algorithms/pstl/alg_nonmodifying/mismatch.cc:
5111         Likewise.
5112         * testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc:
5113         Likewise.
5114         * testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc:
5115         Likewise.
5116         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc:
5117         Likewise.
5118         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc:
5119         Likewise.
5120         * testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc:
5121         Likewise.
5122         * testsuite/25_algorithms/pstl/alg_sorting/includes.cc:
5123         Likewise.
5124         * testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: Likewise.
5125         * testsuite/25_algorithms/pstl/alg_sorting/is_sorted.cc:
5126         Likewise.
5127         * testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc:
5128         Likewise.
5129         * testsuite/25_algorithms/pstl/alg_sorting/minmax_element.cc:
5130         Likewise.
5131         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc:
5132         Likewise.
5133         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc:
5134         Likewise.
5135         * testsuite/25_algorithms/pstl/alg_sorting/set.cc: Likewise.
5136         * testsuite/25_algorithms/pstl/alg_sorting/sort.cc: Likewise.
5137         * testsuite/25_algorithms/pstl/feature_test-2.cc: Likewise.
5138         * testsuite/25_algorithms/pstl/feature_test-3.cc: Likewise.
5139         * testsuite/25_algorithms/pstl/feature_test-4.cc: Likewise.
5140         * testsuite/25_algorithms/pstl/feature_test-5.cc: Likewise.
5141         * testsuite/25_algorithms/pstl/feature_test.cc: Likewise.
5142         * testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc:
5143         Likewise.
5144         * testsuite/26_numerics/pstl/numeric_ops/reduce.cc: Likewise.
5145         * testsuite/26_numerics/pstl/numeric_ops/scan.cc: Likewise.
5146         * testsuite/26_numerics/pstl/numeric_ops/transform_reduce.cc:
5147         Likewise.
5148         * testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc:
5149         Likewise.
5150
5151 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
5152
5153         * testsuite/20_util/scoped_allocator/69293_neg.cc: Add dg-error
5154         for additional errors in C++20.
5155         * testsuite/20_util/specialized_algorithms/memory_management_tools/destroy_neg.cc:
5156         Likewise.
5157         * testsuite/20_util/uses_allocator/69293_neg.cc: Likewise.
5158         * testsuite/27_io/filesystem/path/io/dr2989.cc: Likewise.
5159
5160 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
5161
5162         * testsuite/20_util/variant/compile.cc: Rename 'any' to avoid
5163         clash with std::any.
5164
5165 2021-05-07  Jonathan Wakely  <jwakely@redhat.com>
5166
5167         * include/std/istream (__rvalue_stream_extraction_t): Replace
5168         use of __rval_streamable.
5169         * include/std/ostream (__rvalue_stream_insertion_t): Likewise.
5170         (__rval_streamable): Remove.
5171         (_Require_derived_from_ios_base, __derived_from_ios_base): New
5172         helper for checking constraints.
5173         * testsuite/27_io/basic_istream/extractors_other/char/4.cc: Fix
5174         reference to the wrong subclause of the standard.
5175         * testsuite/27_io/basic_istream/extractors_other/wchar_t/4.cc:
5176         Likewise.
5177         * testsuite/27_io/basic_ostream/inserters_other/char/6.cc:
5178         Likewise.
5179         * testsuite/27_io/basic_ostream/inserters_other/wchar_t/6.cc:
5180         Likewise.
5181         * testsuite/27_io/basic_ostream/inserters_other/char/99692.cc:
5182         New test.
5183         * testsuite/27_io/filesystem/path/io/dr2989.cc: Adjust pruned
5184         errors.
5185
5186 2021-05-06  Jonathan Wakely  <jwakely@redhat.com>
5187
5188         * include/bits/stl_algobase.h (__copy_move, __copy_move_backward):
5189         Improve static_assert messages.
5190         * testsuite/25_algorithms/copy/58982.cc: Adjust expected output.
5191         * testsuite/25_algorithms/copy_n/58982.cc: Likewise.
5192
5193 2021-05-06  Patrick Palka  <ppalka@redhat.com>
5194
5195         * include/std/ranges (filter_view::_Iterator::base): Make the
5196         const& overload unconstrained and return a const reference as
5197         per LWG 3533.  Make unconditionally noexcept.
5198         (transform_view::_Iterator::base): Likewise.
5199         (elements_view::_Iterator::base): Likewise.
5200
5201 2021-05-06  Patrick Palka  <ppalka@redhat.com>
5202
5203         * include/bits/stl_iterator.h (move_iterator::base): Make the
5204         const& overload unconstrained and return a const reference as
5205         per LWG 3391.  Make unconditionally noexcept.
5206         (counted_iterator::base): Likewise.
5207         * testsuite/24_iterators/move_iterator/lwg3391.cc: New test.
5208         * testsuite/24_iterators/move_iterator/move_only.cc: Adjust
5209         has_member_base concept to decay-copy the result of base().
5210
5211 2021-05-06  Jonathan Wakely  <jwakely@redhat.com>
5212
5213         * include/std/type_traits (remove_cvref_t): Define in terms of
5214         remove_cvref.
5215         * testsuite/20_util/remove_cvref/value.cc: Check alias.
5216
5217 2021-05-06  Jonathan Wakely  <jwakely@redhat.com>
5218
5219         Revert:
5220         2021-05-05  Jonathan Wakely  <jwakely@redhat.com>
5221
5222         * include/std/charconv (__from_chars_alnum): Pass unsigned
5223         char to std::isdigit.
5224
5225 2021-05-05  Patrick Palka  <ppalka@redhat.com>
5226
5227         * include/bits/ranges_util.h (enable_borrowed_range<subrange>):
5228         Remove constraints on this partial specialization.
5229         * include/std/ranges (enable_borrowed_range<iota_view>):
5230         Likewise.
5231
5232 2021-05-05  Patrick Palka  <ppalka@redhat.com>
5233
5234         * include/std/ranges (transform_view::_Iterator::iter_swap):
5235         Remove as per LWG 3520.
5236         (join_view::_Iterator::iter_swap): Add indirectly_swappable
5237         constraint as per LWG 3517.
5238
5239 2021-05-05  Jonathan Wakely  <jwakely@redhat.com>
5240
5241         * testsuite/20_util/function_objects/invoke/3.cc: Check feature
5242         test macro.
5243         * testsuite/20_util/function_objects/invoke/version.cc: New test.
5244
5245 2021-05-05  Jonathan Wakely  <jwakely@redhat.com>
5246
5247         * include/std/charconv (__from_chars_alnum): Pass unsigned
5248         char to std::isdigit.
5249
5250 2021-05-05  Corentin Gay  <gay@adacore.com>
5251
5252         * acinclude.m4: Add VxWorks-specific case for the
5253         configuration of ctypes.
5254         * configure: Regenerate.
5255         * config/locale/vxworks/ctype_members.cc: Add VxWorks-specific
5256         version.
5257         * config/os/vxworks/ctype_base.h: Adjust for VxWorks7+.
5258         * config/os/vxworks/ctype_configure_char.cc: Likewise.
5259         * config/os/vxworks/ctype_inline.h: Likewise.
5260         * testsuite/28_regex/traits/char/isctype.cc: Defines
5261         NEWLINE_IN_CLASS_BLANK if the target is VxWorks.
5262         * testsuite/28_regex/traits/wchar_t/isctype.cc: Likewise.
5263
5264 2021-05-04  Jonathan Wakely  <jwakely@redhat.com>
5265
5266         * include/std/future (promise::set_value): Check for existence
5267         of shared state before dereferncing it.
5268         (promise::set_exception, promise::set_value_at_thread_exit)
5269         (promise::set_exception_at_thread_exit): Likewise.
5270         (promise<R&>::set_value, promise<R&>::set_exception)
5271         (promise<R&>::set_value_at_thread_exit)
5272         (promise<R&>::set_exception_at_thread_exit): Likewise.
5273         (promise<void>::set_value, promise<void>::set_exception)
5274         (promise<void>::set_value_at_thread_exit)
5275         (promise<void>::set_exception_at_thread_exit): Likewise.
5276         * testsuite/30_threads/promise/members/at_thread_exit2.cc:
5277         Remove unused variable.
5278
5279 2021-05-04  Jonathan Wakely  <jwakely@redhat.com>
5280
5281         * include/bits/basic_string.h (basic_string(const CharT*, const A&)):
5282         Do not do arithmetic on null pointer.
5283
5284 2021-05-04  Jonathan Wakely  <jwakely@redhat.com>
5285
5286         * include/ext/pb_ds/detail/cc_hash_table_map_/cc_ht_map_.hpp
5287         (find_key_pointer(key_const_reference, false_type))
5288         (find_key_pointer(key_const_reference, true_type)): Do not
5289         dereference null pointer.
5290
5291 2021-05-04  Jonathan Wakely  <jwakely@redhat.com>
5292
5293         * testsuite/20_util/from_chars/3.cc: Use unsigned type to avoid
5294         overflow.
5295         * testsuite/24_iterators/reverse_iterator/2.cc: Do not add
5296         non-zero value to null pointer.
5297         * testsuite/25_algorithms/copy_backward/move_iterators/69478.cc:
5298         Use past-the-end iterator for result.
5299         * testsuite/25_algorithms/move_backward/69478.cc: Likewise.
5300         * testsuite/25_algorithms/move_backward/93872.cc: Likewise.
5301
5302 2021-05-04  Jonathan Wakely  <jwakely@redhat.com>
5303
5304         PR libstdc++/100384
5305         * include/std/variant (__get_t): New alias template yielding the
5306         return type of std::get<N> on a variant.
5307         (__visit_result_t): New alias template yielding the result of
5308         std::visit.
5309         (__same_types): Move into namespace __detail::__variant.
5310         (__check_visitor_results): Likewise. Use __invoke_result_t and
5311         __get_t.
5312         (__check_visitor_result): Remove.
5313         (visit): Use __visit_result_t for return type.
5314         * testsuite/20_util/variant/100384.cc: New test.
5315
5316 2021-05-04  Jonathan Wakely  <jwakely@redhat.com>
5317
5318         * acinclude.m4 (GLIBCXX_ENABLE_INT128_FLOAT128): Remove
5319         checks for __int128 and rename to GLIBCXX_ENABLE_FLOAT128.
5320         * config.h.in: Regenerate.
5321         * configure: Regenerate.
5322         * configure.ac: Adjust to use GLIBCXX_ENABLE_FLOAT128.
5323         * include/bits/random.h (_Select_uint_least_t<s, 1>):
5324         Use __SIZEOF_INT128__ to decide whether to use __int128.
5325         * include/std/charconv (__to_chars_unsigned_type): Likewise.
5326
5327 2021-05-03  Gerald Pfeifer  <gerald@pfeifer.com>
5328
5329         * doc/xml/manual/ctype.xml: Move unix.org reference to https.
5330         * doc/html/manual/facets.html: Regenerate.
5331
5332 2021-04-30  Patrick Palka  <ppalka@redhat.com>
5333
5334         * include/std/ranges (__detail::__non_propating_cache): Define
5335         as per P2328.
5336         (join_view): Remove constraints on the value and reference types
5337         of the wrapped iterator type as per P2328.
5338         (join_view::_Iterator::_M_satisfy): Adjust as per P2328.
5339         (join_view::_Iterator::operator++): Likewise.
5340         (join_view::_M_inner): Use __non_propating_cache as per P2328.
5341         Remove now-redundant use of __maybe_present_t.
5342         * testsuite/std/ranges/adaptors/join.cc: Include <array>.
5343         (test10): New test.
5344
5345 2021-04-30  Jonathan Wakely  <jwakely@redhat.com>
5346
5347         * include/bits/basic_string.h (__cpp_lib_constexpr_string):
5348         Only define for C++17 and later.
5349         * include/std/version (__cpp_lib_semaphore): Fix condition
5350         to match the one in <semaphore>.
5351
5352 2021-04-30  Jonathan Wakely  <jwakely@redhat.com>
5353
5354         * acinclude.m4 (GLIBCXX_CHECK_INT64_T): Delete.
5355         * config.h.in: Regenerate.
5356         * configure: Regenerate.
5357         * configure.ac: Do not use GLIBCXX_CHECK_INT64_T.
5358         * include/bits/postypes.h: Remove include of <stdint.h> and
5359         definition/undefinition of the __STDC_LIMIT_MACROS and
5360         __STDC_CONSTANT_MACROS macros.
5361         (streamoff): Use __INT64_TYPE__ if defined.
5362
5363 2021-04-30  Patrick Palka  <ppalka@redhat.com>
5364
5365         * include/std/ranges (split_view::_InnerIter::operator++):
5366         Depend on _Base instead of _Vp directly, as per LWG 3532.
5367
5368 2021-04-30  Patrick Palka  <ppalka@redhat.com>
5369
5370         * include/bits/ranges_util.h (subrange::subrange): Avoid
5371         list-initialization in delegating constructor.
5372         * include/std/ranges (single_view): Replace implicit guide
5373         with explicit deduction guide that decays its argument.
5374         (_Single::operator()): Avoid CTAD when constructing the
5375         single_view object.
5376         (_Iota::operator()): Avoid list-initialization.
5377         (__detail::__can_filter_view, _Filter::operator()): Likewise.
5378         (__detail::__can_transform_view, _Transform::operator()): Likewise.
5379         (take_view::begin): Likewise.
5380         (__detail::__can_take_view, _Take::operator()): Likewise.
5381         (__detail::__can_take_while_view, _TakeWhile::operator()): Likewise.
5382         (__detail::__can_drop_view, _Drop::operator()): Likewise.
5383         (__detail::__can_drop_while_view, _DropWhile::operator()): Likewise.
5384         (split_view::split_view): Use views::single when initializing
5385         _M_pattern.
5386         (__detail::__can_split_view, _Split::operator()): Avoid
5387         list-initialization.
5388         (_Counted::operator()): Likewise.
5389         * testsuite/std/ranges/p2367.cc: New test.
5390
5391 2021-04-30  Jonathan Wakely  <jwakely@redhat.com>
5392
5393         PR libstdc++/60497
5394         * include/bits/basic_ios.tcc (basic_ios::copyfmt): use
5395         std::addressof.
5396         * include/bits/basic_string.tcc (basic_string::swap)
5397         (basic_string::assign): Likewise.
5398         * include/bits/deque.tcc (deque::operator=(const deque&)):
5399         Likewise.
5400         * include/bits/stl_tree.h (_Rb_tree::operator=(const * _Rb_tree&)):
5401         Likewise.
5402         * include/bits/vector.tcc (vector::operator=(const vector&)):
5403         Likewise.
5404
5405 2021-04-30  Jonathan Wakely  <jwakely@redhat.com>
5406
5407         * include/std/istream (operator>>(Istream&&, x&)): Simplify, as
5408         per LWG 1203.
5409         * include/std/ostream (operator<<(Ostream&&, const x&)):
5410         Likewise.
5411         * testsuite/27_io/basic_istream/extractors_character/char/lwg2499_neg.cc:
5412         Adjust dg-error pattern.
5413         * testsuite/27_io/basic_istream/extractors_character/wchar_t/lwg2499_neg.cc:
5414         Likewise.
5415         * testsuite/27_io/basic_istream/extractors_other/char/4.cc: Define
5416         is_extractable trait to replace std::__is_extractable. Make it
5417         work with rvalue streams as well as lvalues, to replace f() and
5418         g() helper functions.
5419         * testsuite/27_io/basic_istream/extractors_other/wchar_t/4.cc:
5420         Likewise.
5421         * testsuite/27_io/basic_ostream/inserters_other/char/6.cc:
5422         Define is_insertable trait to replace std::__is_insertable. Make
5423         it work with rvalue streams as well as lvalues, to replace f()
5424         and g() helper functions.
5425         * testsuite/27_io/basic_ostream/inserters_other/wchar_t/6.cc:
5426         Likewise.
5427         * testsuite/27_io/filesystem/path/io/dr2989.cc: Prune additional
5428         errors from new constraints.
5429         * testsuite/27_io/rvalue_streams-2.cc: Remove PR 80675 checks,
5430         which are no longer expected to compile.
5431         * testsuite/27_io/rvalue_streams.cc: Adjust existing test.
5432         Verify LWG 1203 changes.
5433
5434 2021-04-30  Jonathan Wakely  <jwakely@redhat.com>
5435
5436         PR libstdc++/100285
5437         * include/experimental/socket (__basic_socket_impl::set_option)
5438         (__basic_socket_impl::get_option) [!_GLIBCXX_HAVE_SYS_SOCKET_H]:
5439         Just set error code.
5440         * testsuite/experimental/net/socket/socket_base.cc: CHeck
5441         for <sys/socket.h> not <socket.h>.
5442
5443 2021-04-30  Jonathan Wakely  <jwakely@redhat.com>
5444
5445         PR libstdc++/100180
5446         PR libstdc++/100286
5447         PR libstdc++/100351
5448         * testsuite/experimental/net/internet/address/v4/comparisons.cc:
5449         Use new effective-target keyword.
5450         * testsuite/experimental/net/internet/address/v4/cons.cc:
5451         Likewise.
5452         * testsuite/experimental/net/internet/address/v4/creation.cc:
5453         Likewise.
5454         * testsuite/experimental/net/internet/address/v4/members.cc:
5455         Likewise.
5456         * testsuite/experimental/net/internet/address/v6/members.cc:
5457         Likewise.
5458         * testsuite/experimental/net/internet/resolver/base.cc:
5459         Likewise.
5460         * testsuite/experimental/net/internet/resolver/ops/lookup.cc:
5461         Likewise.
5462         * testsuite/experimental/net/internet/resolver/ops/reverse.cc:
5463         Likewise.
5464         * testsuite/experimental/net/internet/socket/opt.cc:
5465         Likewise.
5466         * testsuite/experimental/net/internet/tcp.cc:
5467         Likewise.
5468         * testsuite/experimental/net/internet/udp.cc:
5469         Likewise.
5470         * testsuite/lib/libstdc++.exp (check_effective_target_net_ts_ip):
5471         New proc to check net_ts_ip et.
5472
5473 2021-04-28  Jonathan Wakely  <jwakely@redhat.com>
5474
5475         PR libstdc++/97930
5476         * testsuite/20_util/pair/requirements/structural.cc: New test.
5477
5478 2021-04-28  Jonathan Wakely  <jwakely@redhat.com>
5479
5480         * include/bits/stl_pair.h (pair) [__cplusplus > 202002]: Add
5481         new definitions for constructors and assignment operators using
5482         concepts for constraints.
5483         * testsuite/20_util/pair/cons/99957.cc: Disable for C++20 and
5484         later.
5485         * testsuite/20_util/pair/cons/explicit_construct.cc: Adjust
5486         expected error messages to also match C++20 errors.
5487
5488 2021-04-28  Jonathan Wakely  <jwakely@redhat.com>
5489
5490         PR libstdc++/99957
5491         * include/bits/stl_pair.h (_PCC::_MoveCopyPair, _PCC::_CopyMovePair):
5492         Combine and replace with ...
5493         (_PCC::_DeprConsPair): New SFINAE helper function.
5494         (pair): Merge preprocessor blocks so that all C++03 members
5495         are defined together at the end.
5496         (pair::pair(const _T1&, _U2&&), pair::pair(_U1&&, const _T2&)):
5497         Replace _T1 and _T2 parameters with __null_ptr_constant and
5498         adjust constraints.
5499         * testsuite/20_util/pair/40925.cc: Use nullptr instead of 0.
5500         * testsuite/20_util/pair/cons/explicit_construct.cc: Likewise.
5501         * testsuite/20_util/pair/cons/99957.cc: New test.
5502
5503 2021-04-28  Jonathan Wakely  <jwakely@redhat.com>
5504
5505         * include/bits/basic_string.h (__cpp_lib_constexpr_string): Define.
5506         * include/std/version (__cpp_lib_constexpr_string): Define.
5507         * testsuite/21_strings/char_traits/requirements/constexpr_functions_c++17.cc:
5508         Check for __cpp_lib_constexpr_string.
5509         * testsuite/21_strings/char_traits/requirements/constexpr_functions_c++20.cc:
5510         Likewise.
5511         * testsuite/21_strings/char_traits/requirements/version.cc: New test.
5512
5513 2021-04-28  Jonathan Wakely  <jwakely@redhat.com>
5514
5515         * doc/Makefile.am (stamp-pdf-doxygen): Improve comment about
5516         dealing with errors. Use '@' to prevent shell command being
5517         echoed.
5518         * doc/Makefile.in: Regenerate.
5519
5520 2021-04-28  Jonathan Wakely  <jwakely@redhat.com>
5521
5522         PR libstdc++/100298
5523         * include/bits/std_thread.h (thread::hardware_concurrency): Add
5524         missing noexcept to inline definition for non-gthreads targets.
5525
5526 2021-04-28  Patrick Palka  <ppalka@redhat.com>
5527
5528         PR libstdc++/100187
5529         PR libstdc++/100237
5530         PR libstdc++/100249
5531         PR libstdc++/100287
5532         * include/bits/ranges_algo.h (__search_n_fn::operator()): Give
5533         the __value_comp lambda an explicit bool return type.
5534         (__is_permutation_fn::operator()): Give the __proj_scan local
5535         variable auto&& return type.  Give the __comp_scan lambda an
5536         explicit bool return type.
5537         (__remove_fn::operator()): Give the __pred lambda an explicit
5538         bool return type.
5539         (__partition_fn::operator()): Don't std::move __first twice
5540         when returning an empty subrange.
5541         (__min_fn::operator()): Don't std::move __comp.
5542         (__max_fn::operator()): Likewise.
5543         (__minmax_fn::operator()): Likewise.
5544
5545 2021-04-27  Patrick Palka  <ppalka@redhat.com>
5546
5547         PR libstdc++/100290
5548         * include/std/ranges (join_view::_Iterator::operator++): Correct
5549         the return type of the lambda to avoid returning a copy of
5550         _M_parent->_M_inner.
5551         * testsuite/std/ranges/adaptors/join.cc (test10): New test.
5552
5553 2021-04-27  Jakub Jelinek  <jakub@redhat.com>
5554
5555         Revert:
5556         2021-04-22  Jakub Jelinek  <jakub@redhat.com>
5557
5558         PR target/100182
5559         * testsuite/29_atomics/atomic_float/1.cc: Add dg-xfail-run-if for
5560         ia32.
5561         * testsuite/29_atomics/atomic_float/wait_notify.cc: Add dg-skip-if for
5562         ia32.
5563
5564 2021-04-27  Jonathan Wakely  <jwakely@redhat.com>
5565
5566         * include/experimental/internet (address_v6::bytes_type): Adjust
5567         formatting.
5568         (basic_endpoint): Define _M_is_v6() to put all checks for
5569         AF_INET6 in one place.
5570         (basic_endpoint::resize): Simplify.
5571         (operator==(const tcp&, const tcp&)): Add constexpr and noexcept.
5572         (operator!=(const tcp&, const tcp&)): Likewise.
5573         (operator==(const udp&, const udp&)): Likewise.
5574         (operator!=(const udp&, const udp&)): Likewise.
5575         * testsuite/experimental/net/internet/tcp.cc: New test.
5576         * testsuite/experimental/net/internet/udp.cc: New test.
5577
5578 2021-04-27  Jonathan Wakely  <jwakely@redhat.com>
5579
5580         PR libstdc++/100286
5581         * include/experimental/internet (resolver_errc, resolver_category())
5582         (make_error_code, make_error_condition): Define unconditionally,
5583         only make enumerators and use of gai_strerror depend on the
5584         availability of <netdb.h>.
5585         (address_v4::to_string): Use correct constant for string length.
5586         (address_v4::to_string, address_v6::to_string): Define
5587         unconditionally, throw if unsupported.
5588         (make_address_v4, make_address_v6): Define unconditionally.
5589         Return an error if unsupported.
5590         (tcp, udp, v6_only, unicast::hops, multicast::*): Define
5591         conditionally,
5592         * testsuite/experimental/net/internet/socket/opt.cc: Check for
5593         <netinet/in.h> and <netinet/tcp.h> before using types from
5594         namespace net::ip.
5595
5596 2021-04-27  Jonathan Wakely  <jwakely@redhat.com>
5597
5598         PR libstdc++/100285
5599         * include/experimental/internet (resolver_base::flags):
5600         Define overloaded operators as hidden friends.
5601         * include/experimental/socket (socket_base::message_flags):
5602         Likewise.
5603
5604 2021-04-26  Jonathan Wakely  <jwakely@redhat.com>
5605
5606         * include/experimental/internet (tcp::no_delay, v6_only)
5607         (unicast::hops, multicast::hops, multicast::enable_loopback):
5608         Change access of base class and static data members. Add
5609         using-declaration for __socket_crtp::operator=(_Tp).
5610         (multicast::__mcastopt): New type.
5611         (multicast::join_group, multicast::leave_group): Derive from
5612         __mcastopt for common implementation.
5613         * include/experimental/socket: Add comment.
5614         * testsuite/experimental/net/internet/socket/opt.cc: New test.
5615         * testsuite/experimental/net/socket/socket_base.cc: Check for
5616         protected constructor/destructor of socket_base. Check for
5617         explicit constructors of socket option classes.
5618
5619 2021-04-26  Jonathan Wakely  <jwakely@redhat.com>
5620
5621         * include/experimental/bits/net.h (__socket_base): Add
5622         bool template parameter to allow BooleanSocketOption and
5623         IntegerSocketOption to have different __socket_base<int>
5624         base classes.
5625         (__socket_base<bool>): Adjust base class.
5626         (__socket_base<int>): Add partial specialization.
5627         (__socket_crtp::operator=(_Tp)): Add noexcept-specifier.
5628         * include/experimental/socket (socket_base::broadcast)
5629         (socket_base::debug, socket_base::do_not_route)
5630         (socket_base::keep_alive, socket_base::linger)
5631         (socket_base::out_of_band_inline)
5632         (socket_base::receive_buffer_size)
5633         (socket_base::receive_low_watermark)
5634         (socket_base::reuse_address, socket_base::send_buffer_size)
5635         (socket_base::send_low_watermark): Add using-declaration for
5636         __socket_crtp::operator=(_Tp).
5637         * testsuite/experimental/net/socket/socket_base.cc: Check
5638         properties of socket option types.
5639
5640 2021-04-26  Jonathan Wakely  <jwakely@redhat.com>
5641
5642         * include/experimental/internet (resolver_base::flags): Remove
5643         enumerators. Initialize constants directly with desired values.
5644         Make all operators constexpr and noexcept.
5645         * testsuite/experimental/net/internet/resolver/base.cc: Use
5646         __gnu_test::test_bitmask_values for bitmask type. Check
5647         construction and destruction is protected.
5648
5649 2021-04-26  Jonathan Wakely  <jwakely@redhat.com>
5650
5651         * include/bits/semaphore_base.h: Include <exception> and <errno.h>.
5652
5653 2021-04-26  Jonathan Wakely  <jwakely@redhat.com>
5654
5655         PR libstdc++/100259
5656         * include/experimental/internet (net::ip::make_error_code)
5657         (net::ip::make_error_condition, net::ip::make_network_v4)
5658         (net::ip::operator==(const udp&, const udp&)): Add 'inline'.
5659
5660 2021-04-24  David Edelsohn  <dje.gcc@gmail.com>
5661
5662         * testsuite/lib/dg-options.exp (atomic_link_flags): New.
5663         (add_options_for_libatomic): Use atomic_link_flags.
5664
5665 2021-04-23  Jonathan Wakely  <jwakely@redhat.com>
5666
5667         PR libstdc++/100180
5668         * include/experimental/io_context (io_context): Define
5669         dummy_pollfd type so that most member functions still compile
5670         without <poll.h> and struct pollfd.
5671
5672 2021-04-23  Jonathan Wakely  <jwakely@redhat.com>
5673
5674         * include/experimental/io_context (io_context::async_wait): Add
5675         comment.
5676         * include/experimental/socket (basic_socket::async_connect):
5677         Cast wait_type constant to int.
5678         (basic_datagram_socket::async_receive): Likewise.
5679         (basic_datagram_socket::async_receive_from): Likewise.
5680         (basic_datagram_socket::async_send): Likewise.
5681         (basic_datagram_socket::async_send_to): Likewise.
5682         (basic_stream_socket::async_receive): Likewise.
5683         (basic_stream_socket::async_send): Likewise. Use io_context
5684         parameter directly, instead of via an executor.
5685         (basic_socket_acceptor::async_accept): Likewise.
5686
5687 2021-04-23  Jonathan Wakely  <jwakely@redhat.com>
5688
5689         * include/experimental/socket (socket_base::shutdown_type):
5690         (socket_base::wait_type, socket_base::message_flags):
5691         Remove enumerators. Initialize constants directly with desired
5692         values.
5693         (socket_base::message_flags): Make all operators constexpr and
5694         noexcept.
5695         * testsuite/util/testsuite_common_types.h (test_bitmask_values):
5696         New test utility.
5697         * testsuite/experimental/net/socket/socket_base.cc: New test.
5698
5699 2021-04-22  David Edelsohn  <dje.gcc@gmail.com>
5700
5701         * config/os/aix/atomicity.h: Delete.
5702
5703 2021-04-22  Jonathan Wakely  <jwakely@redhat.com>
5704
5705         * include/bits/atomic_timed_wait.h (__cond_wait_until_impl):
5706         Handle system_clock as well as steady_clock.
5707         * testsuite/30_threads/semaphore/try_acquire_for.cc: Re-enable.
5708         * testsuite/30_threads/semaphore/try_acquire_until.cc:
5709         Re-enable.
5710
5711 2021-04-22  Jonathan Wakely  <jwakely@redhat.com>
5712
5713         * testsuite/30_threads/semaphore/try_acquire_posix.cc: Add
5714         options for libatomic.
5715
5716 2021-04-22  Jonathan Wakely  <jwakely@redhat.com>
5717
5718         * config/os/gnu-linux/os_defines.h: Fix type in comment.
5719
5720 2021-04-22  Jonathan Wakely  <jwakely@redhat.com>
5721
5722         PR libstdc++/99006
5723         * include/bits/shared_ptr.h (allocate_shared): Assert that _Tp
5724         is not an array type.
5725         * include/bits/shared_ptr_base.h (__allocate_shared): Likewise.
5726         * testsuite/20_util/shared_ptr/creation/99006.cc: New test.
5727
5728 2021-04-22  Thomas Rodgers  <rodgert@twrodgers.com>
5729
5730         * include/bits/atomic_wait.h: Always notify waiters in the
5731         case of 'bare' address notification.
5732
5733 2021-04-22  Jakub Jelinek  <jakub@redhat.com>
5734
5735         PR target/100182
5736         * testsuite/29_atomics/atomic_float/1.cc: Add dg-xfail-run-if for
5737         ia32.
5738         * testsuite/29_atomics/atomic_float/wait_notify.cc: Add dg-skip-if for
5739         ia32.
5740
5741 2021-04-22  Jonathan Wakely  <jwakely@redhat.com>
5742
5743         PR libstdc++/100179
5744         * include/bits/semaphore_base.h: Remove #error.
5745         * include/std/semaphore: Do not define anything unless one of
5746         the implementations is available.
5747
5748 2021-04-21  Thomas Rodgers  <rodgert@twrodgers.com>
5749
5750         * include/bits/semaphore_base.h: Always reload __old in
5751         __atomic_semaphore::_S_do_try_acquire().
5752         * testsuite/30_threads/stop_token/stop_callback/destroy.cc:
5753         re-enable testcase.
5754
5755 2021-04-21  Philippe Blain  <levraiphilippeblain@gmail.com>
5756             Jonathan Wakely  <jwakely@redhat.com>
5757
5758         PR libstdc++/99453
5759         * python/Makefile.am: Install libstdc++*-gdb.py more robustly.
5760         * python/Makefile.in: Regenerate.
5761
5762 2021-04-21  Thomas Rodgers  <rodgert@twrodgers.com>
5763
5764         * include/bits/semaphore_base.h: Add missing _M_try_acquire()
5765         member to __platform_wait.
5766
5767 2021-04-21  Jonathan Wakely  <jwakely@redhat.com>
5768
5769         * include/std/latch: Replace tab characters in license text.
5770         * include/std/semaphore: Likewise.
5771
5772 2021-04-21  Jakub Jelinek  <jakub@redhat.com>
5773
5774         PR libstdc++/100164
5775         * acinclude.m4: For POSIX semaphores AC_DEFINE HAVE_POSIX_SEMAPHORE
5776         rather than _GLIBCXX_HAVE_POSIX_SEMAPHORE.
5777         * configure: Regenerated.
5778         * config.h.in: Regenerated.
5779
5780 2021-04-20  Jonathan Wakely  <jwakely@redhat.com>
5781
5782         * testsuite/30_threads/semaphore/try_acquire_for.cc: Disable
5783         test for targets not using futexes for semaphores.
5784         * testsuite/30_threads/semaphore/try_acquire_until.cc: Likewise.
5785         * testsuite/30_threads/stop_token/stop_callback/destroy.cc:
5786         Disable for all targets.
5787
5788 2021-04-20  Thomas Rodgers  <trodgers@redhat.com>
5789
5790         * include/Makefile.am: Add new <bits/this_thread_sleep.h> header.
5791         * include/Makefile.in: Regenerate.
5792         * include/bits/this_thread_sleep.h: New file.
5793         * include/bits/atomic_base.h: Adjust all calls
5794         to __atomic_wait/__atomic_notify for new call signatures.
5795         * include/bits/atomic_timed_wait.h: Extensive rewrite.
5796         * include/bits/atomic_wait.h: Likewise.
5797         * include/bits/semaphore_base.h: Adjust all calls
5798         to __atomic_wait/__atomic_notify for new call signatures.
5799         * include/std/atomic: Likewise.
5800         * include/std/barrier: Likewise.
5801         * include/std/latch: Likewise.
5802         * include/std/semaphore: Likewise.
5803         * include/std/thread (this_thread::sleep_for)
5804         (this_thread::sleep_until): Move to new header.
5805         * testsuite/29_atomics/atomic/wait_notify/bool.cc: Simplify
5806         test.
5807         * testsuite/29_atomics/atomic/wait_notify/generic.cc: Likewise.
5808         * testsuite/29_atomics/atomic/wait_notify/pointers.cc: Likewise.
5809         * testsuite/29_atomics/atomic_flag/wait_notify/1.cc: Likewise.
5810         * testsuite/29_atomics/atomic_float/wait_notify.cc: Likewise.
5811         * testsuite/29_atomics/atomic_integral/wait_notify.cc: Likewise.
5812         * testsuite/29_atomics/atomic_ref/wait_notify.cc: Likewise.
5813
5814 2021-04-20  Patrick Palka  <ppalka@redhat.com>
5815
5816         PR libstdc++/95983
5817         * include/bits/stl_iterator.h (__detail::__move_iter_cat):
5818         Define.
5819         (move_iterator): Derive from the above in C++20 in order to
5820         conditionally define iterator_category as per P2259.
5821         (move_iterator::__base_cat): No longer used, so remove.
5822         (move_iterator::iterator_category): Remove in C++20.
5823         (__detail::__common_iter_use_postfix_proxy): Define.
5824         (common_iterator::_Proxy): Rename to ...
5825         (common_iterator:__arrow_proxy): ... this.
5826         (common_iterator::__postfix_proxy): Define as per P2259.
5827         (common_iterator::operator->): Adjust.
5828         (common_iterator::operator++): Adjust as per P2259.
5829         (iterator_traits<common_iterator>::_S_iter_cat): Define.
5830         (iterator_traits<common_iterator>::iterator_category): Change as
5831         per P2259.
5832         (__detail::__counted_iter_value_type): Define.
5833         (__detail::__counted_iter_concept): Define.
5834         (__detail::__counted_iter_cat): Define.
5835         (counted_iterator): Derive from the above three classes in order
5836         to conditionally define value_type, iterator_concept and
5837         iterator category respectively as per P2259.
5838         (counted_iterator::operator->): Define as per P2259.
5839         (incrementable_traits<counted_iterator>): Remove as per P2259.
5840         (iterator_traits<counted_iterator>): Adjust as per P2259.
5841         * include/std/ranges (__detail::__iota_view_iter_cat): Define.
5842         (iota_view::_Iterator): Derive from the above in order to
5843         conditionally define iterator_category as per P2259.
5844         (iota_view::_S_iter_cat): Rename to ...
5845         (iota_view::_S_iter_concept): ... this.
5846         (iota_view::iterator_concept): Use it to apply LWG 3291 changes.
5847         (iota_view::iterator_category): Remove.
5848         (__detail::__filter_view_iter_cat): Define.
5849         (filter_view::_Iterator): Derive from the above in order to
5850         conditionally define iterator_category as per P2259.
5851         (filter_view::_Iterator): Move to struct __filter_view_iter_cat.
5852         (filter_view::_Iterator::iterator_category): Remove.
5853         (transform_view::_Base): Define.
5854         (transform_view::__iter_cat): Define.
5855         (transform_view::_Iterator): Derive from the above in order to
5856         conditionally define iterator_category as per P2259.
5857         (transform_view::_Iterator::_Base): Just alias
5858         transform_view::_Base.
5859         (transform_view::_Iterator::_S_iter_cat): Move to struct
5860         transform_view::__iter_cat.
5861         (transform_view::_Iterator::iterator_category): Remove.
5862         (transform_view::_Sentinel::_Base): Just alias
5863         transform_view::_Base.
5864         (join_view::_Base): Define.
5865         (join_view::_Outer_iter): Define.
5866         (join_view::_Inner_iter): Define.
5867         (join_view::_S_ref_is_glvalue): Define.
5868         (join_view::__iter_cat): Define.
5869         (join_view::_Iterator): Derive from it in order to conditionally
5870         define iterator_category as per P2259.
5871         (join_view::_Iterator::_Base): Just alias join_view::_Base.
5872         (join_view::_Iterator::_S_ref_is_glvalue): Just alias
5873         join_view::_S_ref_is_glvalue.
5874         (join_view::_Iterator::_S_iter_cat): Move to struct
5875         transform_view::__iter_cat.
5876         (join_view::_Iterator::_Outer_iter): Just alias
5877         join_view::_Outer_iter.
5878         (join_view::_Iterator::_Inner_iter): Just alias
5879         join_view::_Inner_iter.
5880         (join_view::_Iterator::iterator_category): Remove.
5881         (join_view::_Sentinel::_Base): Just alias join_view::_Base.
5882         (__detail::__split_view_outer_iter_cat): Define.
5883         (__detail::__split_view_inner_iter_cat): Define.
5884         (split_view::_Base): Define.
5885         (split_view::_Outer_iter): Derive from __split_view_outer_iter_cat
5886         in order to conditionally define iterator_category as per P2259.
5887         (split_view::_Outer_iter::iterator_category): Remove.
5888         (split_view::_Inner_iter): Derive from __split_view_inner_iter_cat
5889         in order to conditionally define iterator_category as per P2259.
5890         (split_view::_Inner_iter::_S_iter_cat): Move to
5891         __split_view_inner_iter_cat.
5892         (split_view::_Inner_iter::iterator_category): Remove.
5893         (elements_view::_Base): Define.
5894         (elements_view::__iter_cat): Define.
5895         (elements_view::_Iterator): Derive from the above in order to
5896         conditionall define iterator_category as per P2259.
5897         (elements_view::_Iterator::_Base): Just alias
5898         elements_view::_Base.
5899         (elements_view::_Iterator::_S_iter_concept)
5900         (elements_view::_Iterator::iterator_concept): Define as per
5901         P2259.
5902         (elements_view::_Iterator::iterator_category): Remove.
5903         (elements_view::_Sentinel::_Base): Just alias
5904         elements_view::_Base.
5905         * testsuite/24_iterators/headers/iterator/synopsis_c++20.cc:
5906         Adjust constraints on iterator_traits<counted_iterator>.
5907         * testsuite/std/ranges/p2259.cc: New test.
5908
5909 2021-04-20  Jonathan Wakely  <jwakely@redhat.com>
5910
5911         PR libstdc++/100146
5912         * include/std/charconv (__cpp_lib_to_chars): Define
5913         conditionally.
5914         * include/std/version (__cpp_lib_to_chars): Likewise..
5915         * testsuite/20_util/from_chars/4.cc: Only check feature test
5916         macro, not _GLIBCXX_HAVE_USELOCALE.
5917         * testsuite/20_util/from_chars/5.cc: Likewise.
5918         * testsuite/20_util/from_chars/6.cc: Likewise.
5919         * testsuite/20_util/to_chars/long_double.cc: Likewise.
5920
5921 2021-04-20  Jakub Jelinek  <jakub@redhat.com>
5922
5923         * testsuite/util/testsuite_abi.cc (compare_symbols): If any symbol
5924         versions with _IEEE128_ substring are found, set ieee_version_found
5925         to true.  Ignore missing symbols with _IEEE128_ in version name if
5926         !ieee_version_found.  Use i->first as version_name instead of
5927         i->second.version_name if the latter is empty.
5928         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
5929
5930 2021-04-19  H.J. Lu  <hjl.tools@gmail.com>
5931
5932         * config/abi/post/x86_64-linux-gnu/x32/baseline_symbols.txt:
5933         Updated.
5934
5935 2021-04-17  Jakub Jelinek  <jakub@redhat.com>
5936
5937         * config/abi/post/powerpc-linux-gnu/baseline_symbols.txt: Update.
5938         * config/abi/post/powerpc64-linux-gnu/32/baseline_symbols.txt: Update.
5939
5940 2021-04-17  Jakub Jelinek  <jakub@redhat.com>
5941
5942         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
5943         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
5944         * config/abi/post/i386-linux-gnu/baseline_symbols.txt: Update.
5945         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
5946         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
5947         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
5948
5949 2021-04-15  Jonathan Wakely  <jwakely@redhat.com>
5950
5951         * testsuite/lib/dg-options.exp (add_options_for_libatomic): Also
5952         add libatomic options for 32-bit sparc*-*-linux-gnu.
5953
5954 2021-04-15  Jonathan Wakely  <jwakely@redhat.com>
5955
5956         PR libstdc++/96657
5957         * libsupc++/Makefile.am: Add atomicity.cc here.
5958         * src/c++98/Makefile.am: Remove it from here.
5959         * libsupc++/Makefile.in: Regenerate.
5960         * src/c++98/Makefile.in: Regenerate.
5961         * testsuite/18_support/exception_ptr/96657.cc: New test.
5962
5963 2021-04-13  Jonathan Wakely  <jwakely@redhat.com>
5964
5965         PR libstdc++/100060
5966         * include/std/bit: Only include <ext/numeric_traits.h> for
5967         hosted build, use <limits> otherwise.
5968
5969 2021-04-13  Jonathan Wakely  <jwakely@redhat.com>
5970
5971         * doc/xml/manual/backwards_compatibility.xml: Remove porting
5972         notes for libg++ and libstdc++-v2, and bibliography.
5973         * doc/html/*: Regenerated.
5974
5975 2021-04-12  Jonathan Wakely  <jwakely@redhat.com>
5976
5977         PR libstdc++/100044
5978         * include/bits/ranges_util.h (__detail::__iterator_sentinel_pair):
5979         Remove helper concept.
5980         (subrange(_Pr), subrange(Pr, __make_unsigned_like<...>)): Remove
5981         deduction guides, as per LWG 3404.
5982         * testsuite/std/ranges/subrange/lwg3282_neg.cc: Check that class
5983         template argument deduction fails.
5984
5985 2021-04-12  Jonathan Wakely  <jwakely@redhat.com>
5986
5987         * testsuite/26_numerics/random/linear_congruential_engine/requirements/non_uint_neg.cc:
5988         Adjust expected error for C++20 mode.
5989         * testsuite/tr1/5_numerical_facilities/random/linear_congruential/requirements/non_uint_neg.cc:
5990         Likewise.
5991
5992 2021-04-12  Jonathan Wakely  <jwakely@redhat.com>
5993
5994         PR libstdc++/99995
5995         * testsuite/17_intro/headers/c++1998/49745.cc: Include all
5996         standard headers and XFAIL for effective-target c++20.
5997
5998 2021-04-09  François Dumont  <fdumont@gcc.gnu.org>
5999
6000         PR libstdc++/99402
6001         * include/debug/helper_functions.h (__can_advance(_InputIterator,
6002         const std::pair<_Diff, _Distance_precision>&, int)): New.
6003         (__can_advance(const _Safe_iterator<>&,
6004         const std::pair<_Diff, _Distance_precision>&, int)): New.
6005         * include/debug/macros.h (__glibcxx_check_can_increment_dist): New,
6006         use latter.
6007         (__glibcxx_check_can_increment_range): Adapt to use latter.
6008         (__glibcxx_check_can_decrement_range): Likewise.
6009         * include/debug/safe_iterator.h
6010         (_Safe_iterator<>::_M_can_advance(const std::pair<_Diff, _Distance_precision>&,
6011         int)): New.
6012         (__can_advance(const _Safe_iterator<>&,
6013         const std::pair<_Diff, _Distance_precision>&, int)): New.
6014         * include/debug/safe_iterator.tcc
6015         (_Safe_iterator<>::_M_can_advance(const std::pair<_Diff, _Distance_precision>&,
6016         int)): New.
6017         (_Safe_iterator<>::_M_valid_range(const _Safe_iterator<>&,
6018         std::pair<difference_type, _Distance_precision>&, bool)): Adapt for
6019         __dp_sign_max_size.
6020         (__copy_move_a): Adapt to use __glibcxx_check_can_increment_dist.
6021         (__copy_move_backward_a): Likewise.
6022         (__equal_aux): Likewise.
6023         * include/debug/stl_iterator.h (__can_advance(const std::reverse_iterator<>&,
6024         const std::pair<_Diff, _Distance_precision>&, int)): New.
6025         (__can_advance(const std::move_iterator<>&,
6026         const std::pair<_Diff, _Distance_precision>&, int)): New.
6027         * testsuite/25_algorithms/copy/debug/99402.cc: New test.
6028
6029 2021-04-09  Jonathan Wakely  <jwakely@redhat.com>
6030
6031         PR libstdc++/99985
6032         * include/bits/hashtable.h (_Hashtable::_S_nothrow_move()): Fix
6033         to be a valid constexpr function in C++11.
6034         * testsuite/23_containers/unordered_set/cons/99985.cc: New test.
6035
6036 2021-04-09  Jonathan Wakely  <jwakely@redhat.com>
6037
6038         * include/bits/fs_fwd.h: Fix doxygen group command.
6039         * include/bits/streambuf_iterator.h: Likewise.
6040         * include/bits/uses_allocator_args.h: Likewise.
6041         * include/std/memory: Likewise.
6042         * include/tr1/complex: Likewise.
6043
6044 2021-04-08  Jonathan Wakely  <jwakely@redhat.com>
6045
6046         * include/bits/basic_string.h: Tweak doxygen comment.
6047
6048 2021-04-08  Patrick Palka  <ppalka@redhat.com>
6049
6050         * include/std/ranges (__detail::find): Define.
6051         (split_view::_OuterIter::operator++): Apply proposed resolution
6052         of LWG 3505.
6053         * testsuite/std/ranges/adaptors/split.cc (test10): New test.
6054
6055 2021-04-08  Patrick Palka  <ppalka@redhat.com>
6056
6057         * include/std/ranges (__detail::find_if): Simplify.
6058         (__detail::find_if_not): Likewise.
6059         (__detail::min): Remove.
6060         (__detail::mismatch): Simplify.
6061         (take_view::size): Use std::min instead of __detail::min.
6062
6063 2021-04-08  Patrick Palka  <ppalka@redhat.com>
6064
6065         * include/std/ranges (__detail::__returnable_element): New
6066         concept.
6067         (elements_view): Use this concept in its constraints.  Add
6068         missing private access specifier.
6069         (elements_view::_S_get_element): Define as per LWG 3502.
6070         (elements_view::operator*, elements_view::operator[]): Use
6071         _S_get_element.
6072         (elements_view::operator++): Remove unnecessary constraint
6073         as per LWG 3492.
6074         * testsuite/std/ranges/adaptors/elements.cc (test05): New test.
6075
6076 2021-04-08  Jonathan Wakely  <jwakely@redhat.com>
6077
6078         * doc/Makefile.am (stamp-pdf-doxygen): Also grep for
6079         out-of-memory error in log file.
6080         * doc/Makefile.in: Regenerate.
6081
6082 2021-04-08  Jonathan Wakely  <jwakely@redhat.com>
6083
6084         * configure: Regenerate.
6085
6086 2021-04-08  Jonathan Wakely  <jwakely@redhat.com>
6087
6088         * include/bits/random.h: Fix doxygen group commands.
6089         * include/bits/regex_constants.h: Likewise.
6090         * include/tr1/random.h: Likewise.
6091
6092 2021-04-08  Jonathan Wakely  <jwakely@redhat.com>
6093
6094         * include/bits/hashtable.h (_Hashtable::_S_nothrow_move()):
6095         New function to determine noexcept-specifier for move
6096         constructors.
6097         (_Hashtable): Use _S_nothrow_move() on move constructors.
6098         * testsuite/23_containers/unordered_map/cons/noexcept_move_construct.cc:
6099         Correct static assertion message.
6100         * testsuite/23_containers/unordered_multimap/cons/noexcept_move_construct.cc:
6101         Likewise.
6102         * testsuite/23_containers/unordered_multiset/cons/noexcept_move_construct.cc:
6103         Likewise.
6104         * testsuite/23_containers/unordered_set/cons/noexcept_move_construct.cc:
6105         Likewise.
6106
6107 2021-04-08  Patrick Palka  <ppalka@redhat.com>
6108
6109         PR libstdc++/98384
6110         * testsuite/20_util/to_chars/long_double.cc: Don't run the test
6111         on targets without a large long double.  XFAIL the execution on
6112         targets with a non-conforming printf.
6113
6114 2021-04-08  Patrick Palka  <ppalka@redhat.com>
6115
6116         PR libstdc++/99433
6117         * include/std/ranges (__adaptor::__maybe_refwrap): Remove.
6118         (__adaptor::__adaptor_invocable): New concept.
6119         (__adaptor::__adaptor_partial_app_viable): New concept.
6120         (__adaptor::_RangeAdaptorClosure): Rewrite, turning it into a
6121         non-template base class.
6122         (__adaptor::_RangeAdaptor): Rewrite, turning it into a CRTP base
6123         class template.
6124         (__adaptor::_Partial): New class template that represents
6125         partial application of a range adaptor non-closure.
6126         (__adaptor::__pipe_invocable): New concept.
6127         (__adaptor::_Pipe): New class template.
6128         (__detail::__can_ref_view): New concept.
6129         (__detail::__can_subrange): New concept.
6130         (all): Replace the lambda here with ...
6131         (_All): ... this functor.  Add appropriate constraints.
6132         (__detail::__can_filter_view): New concept.
6133         (filter, _Filter): As in all/_All.
6134         (__detail::__can_transform): New concept.
6135         (transform, _Transform): As in all/_All.
6136         (__detail::__can_take_view): New concept.
6137         (take, _Take): As in all/_All.
6138         (__detail::__can_take_while_view): New concept.
6139         (take_while, _TakeWhile): As in all/_All.
6140         (__detail::__can_drop_view): New concept.
6141         (drop, _Drop): As in all/_All.
6142         (__detail::__can_drop_while_view): New concept.
6143         (drop_while, _DropWhile): As in all/_All.
6144         (__detail::__can_join_view): New concept.
6145         (join, _Join): As in all/_All.
6146         (__detail::__can_split_view): New concept.
6147         (split, _Split): As in all/_All.  Rename template parameter
6148         _Fp to _Pattern.
6149         (__detail::__already_common): New concept.
6150         (__detail::__can_common_view): New concept.
6151         (common, _Common): As in all/_All.
6152         (__detail::__can_reverse_view): New concept.
6153         (reverse, _Reverse): As in all/_All.
6154         (__detail::__can_elements_view): New concept.
6155         (elements, _Elements): As in all/_All.
6156         (keys, values): Adjust.
6157         * testsuite/std/ranges/adaptors/99433.cc: New test.
6158         * testsuite/std/ranges/adaptors/all.cc: No longer expect that
6159         adding empty range adaptor closure objects to a pipeline doesn't
6160         increase the size of the pipeline.
6161         (test05): New test.
6162         * testsuite/std/ranges/adaptors/common.cc (test03): New test.
6163         * testsuite/std/ranges/adaptors/drop.cc (test09): New test.
6164         * testsuite/std/ranges/adaptors/drop_while.cc (test04): New test.
6165         * testsuite/std/ranges/adaptors/elements.cc (test04): New test.
6166         * testsuite/std/ranges/adaptors/filter.cc (test06): New test.
6167         * testsuite/std/ranges/adaptors/join.cc (test09): New test.
6168         * testsuite/std/ranges/adaptors/p2281.cc: New test.
6169         * testsuite/std/ranges/adaptors/reverse.cc (test07): New test.
6170         * testsuite/std/ranges/adaptors/split.cc (test01, test04):
6171         Adjust.
6172         (test09): New test.
6173         * testsuite/std/ranges/adaptors/split_neg.cc (test01): Adjust
6174         expected error message.
6175         (test02): Likewise.  Extend test.
6176         * testsuite/std/ranges/adaptors/take.cc (test06): New test.
6177         * testsuite/std/ranges/adaptors/take_while.cc (test05): New test.
6178         * testsuite/std/ranges/adaptors/transform.cc (test07, test08):
6179         New test.
6180
6181 2021-04-08  Jonathan Wakely  <jwakely@redhat.com>
6182
6183         * include/std/string_view: Adjust Doxygen @file comment.
6184
6185 2021-04-08  Jonathan Wakely  <jwakely@redhat.com>
6186
6187         * include/std/type_traits (is_scoped_enum<T>): Constrain partial
6188         specialization to not match incomplete enum types. Use a
6189         requires-expression instead of instantiating is_convertible.
6190         (is_scoped_enum<const T>): Add as workaround for PR c++/99968.
6191         * testsuite/20_util/is_scoped_enum/value.cc: Check with
6192         incomplete types and opaque-enum-declarations.
6193
6194 2021-04-07  Jonathan Wakely  <jwakely@redhat.com>
6195
6196         PR libstdc++/99805
6197         * src/c++17/fs_path.cc (path::_M_split_cmpts): Do not call
6198         non-const member on _M_pathname, to avoid copy-on-write.
6199         * testsuite/27_io/filesystem/path/decompose/parent_path.cc:
6200         Check construction from strings that might be shared.
6201
6202 2021-04-06  Jonathan Wakely  <jwakely@redhat.com>
6203
6204         * include/bits/move.h (forward, move, move_if_noexcept)
6205         (addressof): Add _GLIBCXX_NODISCARD.
6206         * include/bits/ranges_cmp.h (identity::operator()): Add
6207         nodiscard attribute.
6208         * include/c_global/cstddef (to_integer): Likewise.
6209         * include/std/bit (bit_cast): Likewise.
6210         * include/std/utility (as_const, to_underlying): Likewise.
6211
6212 2021-04-06  Jonathan Wakely  <jwakely@redhat.com>
6213
6214         * include/bits/move.h (forward): Change static_assert message
6215         to be unambiguous about what must be true.
6216         * testsuite/20_util/forward/c_neg.cc: Adjust dg-error.
6217         * testsuite/20_util/forward/f_neg.cc: Likewise.
6218
6219 2021-04-06  Jonathan Wakely  <jwakely@redhat.com>
6220
6221         * include/bits/alloc_traits.h: Use markdown for code font.
6222         * include/bits/basic_string.h: Fix @param names.
6223         * include/bits/max_size_type.h: Remove period after @file.
6224         * include/bits/regex.h: Fix duplicate @retval names, and rename.
6225         * include/ext/pb_ds/detail/priority_queue_base_dispatch.hpp: Add
6226         group open to match existing group close.
6227         * include/ext/pb_ds/priority_queue.hpp: Add blank line before group
6228         open.
6229
6230 2021-04-06  Jonathan Wakely  <jwakely@redhat.com>
6231
6232         * include/bits/atomic_base.h: Fix doxygen group close.
6233         * include/bits/basic_ios.h: Likewise.
6234         * include/bits/forward_list.h: Likewise.
6235         * include/bits/fs_dir.h: Likewise.
6236         * include/bits/fs_ops.h: Likewise.
6237         * include/bits/fs_path.h: Likewise.
6238         * include/bits/functional_hash.h: Likewise.
6239         * include/bits/gslice.h: Likewise.
6240         * include/bits/gslice_array.h: Likewise.
6241         * include/bits/hashtable_policy.h: Likewise.
6242         * include/bits/indirect_array.h: Likewise.
6243         * include/bits/locale_classes.h: Likewise.
6244         * include/bits/locale_facets.h: Likewise.
6245         * include/bits/locale_facets_nonio.h: Likewise.
6246         * include/bits/mask_array.h: Likewise.
6247         * include/bits/refwrap.h: Likewise.
6248         * include/bits/regex.h: Likewise.
6249         * include/bits/regex_automaton.h: Likewise.
6250         * include/bits/regex_compiler.h: Likewise.
6251         * include/bits/regex_constants.h: Likewise.
6252         * include/bits/regex_error.h: Likewise.
6253         * include/bits/regex_executor.h: Likewise.
6254         * include/bits/regex_scanner.h: Likewise.
6255         * include/bits/shared_ptr.h: Likewise.
6256         * include/bits/shared_ptr_atomic.h: Likewise.
6257         * include/bits/shared_ptr_base.h: Likewise.
6258         * include/bits/slice_array.h: Likewise.
6259         * include/bits/specfun.h: Likewise.
6260         * include/bits/std_function.h: Likewise.
6261         * include/bits/std_mutex.h: Likewise.
6262         * include/bits/stl_deque.h: Likewise.
6263         * include/bits/stl_iterator.h: Likewise.
6264         * include/bits/stl_iterator_base_types.h: Likewise.
6265         * include/bits/stl_map.h: Likewise.
6266         * include/bits/stl_multimap.h: Likewise.
6267         * include/bits/stl_multiset.h: Likewise.
6268         * include/bits/stl_numeric.h: Likewise.
6269         * include/bits/stl_pair.h: Likewise.
6270         * include/bits/stl_set.h: Likewise.
6271         * include/bits/stl_uninitialized.h: Likewise.
6272         * include/bits/stream_iterator.h: Likewise.
6273         * include/bits/streambuf_iterator.h: Likewise.
6274         * include/bits/unique_ptr.h: Likewise.
6275         * include/bits/unordered_map.h: Likewise.
6276         * include/bits/unordered_set.h: Likewise.
6277         * include/decimal/decimal: Likewise.
6278         * include/experimental/any: Likewise.
6279         * include/experimental/array: Likewise.
6280         * include/experimental/bits/fs_dir.h: Likewise.
6281         * include/experimental/bits/fs_fwd.h: Likewise.
6282         * include/experimental/bits/fs_ops.h: Likewise.
6283         * include/experimental/bits/fs_path.h: Likewise.
6284         * include/experimental/buffer: Likewise.
6285         * include/experimental/internet: Likewise.
6286         * include/experimental/optional: Likewise.
6287         * include/experimental/propagate_const: Likewise.
6288         * include/experimental/socket: Likewise.
6289         * include/ext/pb_ds/assoc_container.hpp: Likewise.
6290         * include/ext/pb_ds/detail/priority_queue_base_dispatch.hpp:
6291         Likewise.
6292         * include/ext/pb_ds/detail/tree_policy/node_metadata_selector.hpp: Likewise.
6293         * include/ext/pb_ds/detail/trie_policy/node_metadata_selector.hpp: Likewise.
6294         * include/ext/pb_ds/detail/types_traits.hpp: Likewise.
6295         * include/ext/pb_ds/exception.hpp: Likewise.
6296         * include/ext/pb_ds/priority_queue.hpp: Likewise.
6297         * include/ext/pb_ds/tag_and_trait.hpp: Likewise.
6298         * include/ext/random: Likewise.
6299         * include/std/any: Likewise.
6300         * include/std/atomic: Likewise.
6301         * include/std/bitset: Likewise.
6302         * include/std/chrono: Likewise.
6303         * include/std/complex: Likewise.
6304         * include/std/condition_variable: Likewise.
6305         * include/std/fstream: Likewise.
6306         * include/std/future: Likewise.
6307         * include/std/iostream: Likewise.
6308         * include/std/istream: Likewise.
6309         * include/std/mutex: Likewise.
6310         * include/std/numeric: Likewise.
6311         * include/std/ostream: Likewise.
6312         * include/std/ratio: Likewise.
6313         * include/std/shared_mutex: Likewise.
6314         * include/std/stdexcept: Likewise.
6315         * include/std/streambuf: Likewise.
6316         * include/std/system_error: Likewise.
6317         * include/std/thread: Likewise.
6318         * include/std/valarray: Likewise.
6319         * include/std/variant: Likewise.
6320         * include/tr1/cmath: Likewise.
6321         * include/tr1/regex: Likewise.
6322         * include/tr2/dynamic_bitset: Likewise.
6323         * libsupc++/atomic_lockfree_defines.h: Likewise.
6324         * libsupc++/exception: Likewise.
6325         * libsupc++/exception.h: Likewise.
6326         * libsupc++/exception_ptr.h: Likewise.
6327         * libsupc++/nested_exception.h: Likewise.
6328
6329 2021-03-31  Alexandre Oliva  <oliva@adacore.com>
6330
6331         * testsuite/30_threads/future/members/poll.cc: Use faster
6332         after-ready call in the calibration loop.
6333
6334 2021-03-29  Jonathan Wakely  <jwakely@redhat.com>
6335
6336         * doc/xml/manual/status_cxx2017.xml: Adjust link for PSTL.
6337         * doc/html/manual/status.html: Regenerate.
6338
6339 2021-03-28  François Dumont  <fdumont@gcc.gnu.org>
6340
6341         * include/debug/forward_list
6342         (forward_list(forward_list&&, const allocator_type&)): Add noexcept qualification.
6343         * include/debug/list (list(list&&, const allocator_type&)): Likewise and add
6344         call to safe container allocator aware move constructor.
6345         * include/debug/vector (vector(vector&&, const allocator_type&)):
6346         Fix noexcept qualification.
6347         * testsuite/23_containers/forward_list/cons/noexcept_move_construct.cc:
6348         Add allocator-extended move constructor noexceot qualification check.
6349         * testsuite/23_containers/list/cons/noexcept_move_construct.cc: Likewise.
6350
6351 2021-03-26  Jonathan Wakely  <jwakely@redhat.com>
6352
6353         * src/c++11/random.cc (USE_LCG): Define when a pseudo-random
6354         fallback is needed.
6355         [USE_LCG] (bad_seed, construct_lcg_at, destroy_lcg_at, __lcg):
6356         New helper functions and callback.
6357         (random_device::_M_init): Add 'prng' and 'all' enumerators.
6358         Replace switch with fallthrough with a series of 'if' statements.
6359         [USE_LCG]: Construct an lcg_type engine and use __lcg when cpuid
6360         checks fail.
6361         (random_device::_M_init_pretr1) [USE_MT19937]: Accept "prng"
6362         token.
6363         (random_device::_M_getval): Check for callback unconditionally
6364         and always pass _M_file pointer.
6365         * testsuite/26_numerics/random/random_device/85494.cc: Remove
6366         effective-target check. Use new random_device_available helper.
6367         * testsuite/26_numerics/random/random_device/94087.cc: Likewise.
6368         * testsuite/26_numerics/random/random_device/cons/default-cow.cc:
6369         Remove effective-target check.
6370         * testsuite/26_numerics/random/random_device/cons/default.cc:
6371         Likewise.
6372         * testsuite/26_numerics/random/random_device/cons/token.cc: Use
6373         new random_device_available helper. Test "prng" token.
6374         * testsuite/util/testsuite_random.h (random_device_available):
6375         New helper function.
6376
6377 2021-03-25  François Dumont  <fdumont@gcc.gnu.org>
6378
6379         * include/debug/string
6380         (basic_string(const basic_string&, const _Alloc&)): Define even if !_GLIBCXX_USE_CXX11_ABI.
6381         (basic_string(basic_string&&, const _Alloc&)): Likewise and add noexcept qualification.
6382         (basic_string<>::erase): Adapt to take __const_iterator.
6383         (basic_string(const _CharT*, const _Allocator&)): Remove assign call.
6384         (basic_string<>::insert(const_iterator, _InputIte, _InputIte)): Try to
6385         remove iterator debug layer even if !_GLIBCXX_USE_CXX11_ABI.
6386         [_GLIBCXX_USE_CHAR8_T] (__gnu_debug::u8string): New.
6387         (__gnu_debug::u16string, __gnu_debug::u32string): New.
6388         (std::hash<__gnu_debug::basic_string<>>): New partial specialization.
6389         (std::__is_fast_hash<__gnu_debug::basic_string<>>): Likewise.
6390         * testsuite/util/exception/safety.h
6391         (erase_base<__gnu_debug::basic_string<>>): New partial specialization.
6392         (insert_base<__gnu_debug::basic_string<>>): Likewise.
6393         * testsuite/util/testsuite_container_traits.h (traits<__gnu_debug::basic_string<>>):
6394         New partial specialization.
6395         * testsuite/21_strings/basic_string/hash/debug.cc: New test.
6396         * testsuite/21_strings/basic_string/requirements/citerators.cc:
6397         Add test on __gnu_debug::string.
6398         * testsuite/21_strings/basic_string/requirements/dr438/constructor.cc: Likewise.
6399         * testsuite/21_strings/basic_string/requirements/exception/basic.cc: Likewise.
6400         * testsuite/21_strings/basic_string/requirements/exception/generation_prohibited.cc:
6401         Likewise.
6402         * testsuite/21_strings/basic_string/requirements/exception/propagation_consistent.cc:
6403         Likewise.
6404         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char/1.cc:
6405         Likewise.
6406         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char16_t/1.cc:
6407         Likewise.
6408         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char32_t/1.cc:
6409         Likewise.
6410         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char8_t/1.cc:
6411         Likewise.
6412         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/wchar_t/1.cc:
6413         Likewise.
6414         * testsuite/21_strings/basic_string/requirements/typedefs.cc: Likewise.
6415
6416 2021-03-25  Jakub Jelinek  <jakub@redhat.com>
6417
6418         PR c++/99672
6419         * testsuite/18_support/source_location/consteval.cc (main): Adjust
6420         expected column numbers.
6421         * testsuite/18_support/source_location/1.cc (main): Likewise.
6422
6423 2021-03-25  Jonathan Wakely  <jwakely@redhat.com>
6424
6425         * libsupc++/new_opa.cc [!_GLIBCXX_HOSTED]: Declare malloc.
6426
6427 2021-03-25  Jonathan Wakely  <jwakely@redhat.com>
6428
6429         * testsuite/util/exception/safety.h (setup_base::generate):
6430         Support seeding random engine.
6431         (erase_point, erase_range): Adjust range of random numbers to
6432         ensure dereferenceable iterators are used where required.
6433         (generation_prohibited::run): Do not try to erase from empty
6434         containers.
6435         * testsuite/util/testsuite_containergen.h (test_containers):
6436         Support seeding random engine.
6437
6438 2021-03-23  Jonathan Wakely  <jwakely@redhat.com>
6439
6440         * testsuite/std/ranges/adaptors/reverse.cc: Replace duplicated
6441         line with a check that uses the const being/end overloads.
6442
6443 2021-03-23  Moritz Sichert  <sichert@in.tum.de>
6444
6445         * include/std/ranges (reverse_view::begin, reverse_view::end):
6446         Qualify make_reverse_iterator calls to avoid ADL.
6447         * testsuite/std/ranges/adaptors/reverse.cc: Test that
6448         views::reverse works when make_reverse_iterator is defined
6449         in an associated namespace.
6450
6451 2021-03-23  Jonathan Wakely  <jwakely@redhat.com>
6452
6453         * include/bits/c++config (_GLIBCXX_LONG_DOUBLE_ALT128_COMPAT):
6454         Do not define when compiling with Clang.
6455
6456 2021-03-22  Jonathan Wakely  <jwakely@redhat.com>
6457
6458         * include/std/string_view (basic_string_view(Range&&)): Define new
6459         constructor and deduction guide.
6460         * testsuite/21_strings/basic_string_view/cons/char/range_c++20.cc: New test.
6461         * testsuite/21_strings/basic_string_view/cons/wchar_t/range_c++20.cc: New test.
6462
6463 2021-03-22  Jonathan Wakely  <jwakely@redhat.com>
6464
6465         * include/bits/range_access.h (begin(T (&)[N]), end(T (&)[N])):
6466         Add missing 'noexcept' as per LWG 2280.
6467         (rbegin(T (&)[N]), rend(T (&)[N]), rbegin(initializer_list<T>))
6468         (rend(initializer_list<T>)): Add 'noexcept' as per LWG 3537.
6469         * testsuite/24_iterators/range_access/range_access.cc: Check for
6470         expected noexcept specifiers. Check result types of generic
6471         std::begin and std::end overloads.
6472         * testsuite/24_iterators/range_access/range_access_cpp14.cc:
6473         Check for expected noexcept specifiers.
6474         * testsuite/24_iterators/range_access/range_access_cpp17.cc:
6475         Likewise.
6476
6477 2021-03-19  Jonathan Wakely  <jwakely@redhat.com>
6478
6479         * include/std/type_traits (is_scoped_enum): Define.
6480         * include/std/version (__cpp_lib_is_scoped_enum): Define.
6481         * testsuite/20_util/is_scoped_enum/value.cc: New test.
6482         * testsuite/20_util/is_scoped_enum/version.cc: New test.
6483
6484 2021-03-16  Jonathan Wakely  <jwakely@redhat.com>
6485
6486         PR libstdc++/99341
6487         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Remove
6488         std::once_flag symbols.
6489         * config/abi/post/ia64-linux-gnu/baseline_symbols.txt: Likewise.
6490         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Likewise.
6491         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt:
6492         Likewise.
6493         * config/abi/pre/gnu.ver: Likewise.
6494         * src/c++11/mutex.cc [_GLIBCXX_HAVE_LINUX_FUTEX]
6495         (struct __once_flag_compat): Remove.
6496         (_ZNSt9once_flag11_M_activateEv): Remove.
6497         (_ZNSt9once_flag9_M_finishEb): Remove.
6498
6499 2021-03-16  Jonathan Wakely  <jwakely@redhat.com>
6500
6501         PR libstdc++/99341
6502         * include/std/mutex [_GLIBCXX_HAVE_LINUX_FUTEX] (once_flag):
6503         Revert to pthread_once_t implementation.
6504         [_GLIBCXX_HAVE_LINUX_FUTEX] (call_once): Likewise.
6505         * src/c++11/mutex.cc [_GLIBCXX_HAVE_LINUX_FUTEX]
6506         (struct __once_flag_compat): New type matching the reverted
6507         implementation of once_flag using futexes.
6508         (once_flag::_M_activate): Remove, replace with ...
6509         (_ZNSt9once_flag11_M_activateEv): ... alias symbol.
6510         (once_flag::_M_finish): Remove, replace with ...
6511         (_ZNSt9once_flag9_M_finishEb): ... alias symbol.
6512         * testsuite/30_threads/call_once/66146.cc: Removed.
6513
6514 2021-03-15  Iain Sandoe  <iain@sandoe.co.uk>
6515
6516         * testsuite/17_intro/names.cc: Exclude j from the list
6517         of test symbols for Darwin.
6518
6519 2021-03-15  Iain Sandoe  <iain@sandoe.co.uk>
6520
6521         * config/os/bsd/darwin/ppc-extra.ver: Add matching for
6522         to_chars and from_chars for long double.
6523
6524 2021-03-15  Patrick Palka  <ppalka@redhat.com>
6525
6526         * include/bits/max_size_type.h (__max_size_type::operator _Tp):
6527         Fix formatting.
6528         (__max_size_type::operator++): Define.
6529         (__max_size_type::operator--): Likewise.
6530         (__max_size_type::operator<=>): Conditionally define (in place
6531         of the other comparison operators).
6532         (__max_diff_type::operator _Tp): Fix formatting.
6533         (__max_diff_type::operator++): Define.
6534         (__max_diff_type::operator--): Likewise.
6535         (__max_diff_type::operator<=>): Conditionally define (in place
6536         of the other comparison operators).
6537         * testsuite/std/ranges/iota/max_size_type.cc (test01): Test
6538         these operator overloads.
6539
6540 2021-03-15  Caroline Tice  <cmtice@google.com>
6541
6542         PR libstdc++/99172
6543         * src/Makefile.am (AM_CXXFLAGS_PRE, AM_CXXFLAGS): Add
6544         AM_CXXFLAGS_PRE with the old definition of AM_CXXFLAGS; make
6545         AM_CXXFLAGS to be AM_CXXFLAGS_PRE with '-fvtable-verify=std'
6546         filtered out.
6547         * src/Makefile.in: Regenerate.
6548
6549 2021-03-11  Patrick Palka  <ppalka@redhat.com>
6550
6551         * src/c++17/floating_to_chars.cc: Simplify the file as if
6552         __SIZEOF_INT128__ is always defined.
6553         [!defined __SIZEOF_INT128__]: Include "uint128_t.h".  Define
6554         a base-10 to_chars overload for the uint128_t class type.
6555         * src/c++17/uint128_t.h: New file.
6556         * testsuite/20_util/to_chars/long_double.cc: No longer expect an
6557         execution FAIL on targets that have a large long double type
6558         but lack __int128.
6559
6560 2021-03-11  Patrick Palka  <ppalka@redhat.com>
6561
6562         * src/c++17/ryu/LOCAL_PATCHES: Update.
6563         * src/c++17/ryu/d2s_intrinsics.h: Don't define uint128_t.
6564         * src/c++17/ryu/generic_128.h: Likewise.
6565         * src/c++17/ryu/ryu_generic_128.h (struct floating_decimal_128):
6566         Use uint128_t instead of __uint128_t.
6567         (generic_binary_to_decimal): Likewise.
6568
6569 2021-03-11  Patrick Palka  <ppalka@redhat.com>
6570
6571         * src/c++17/ryu/LOCAL_PATCHES: New file.
6572
6573 2021-03-11  Patrick Palka  <ppalka@redhat.com>
6574
6575         * src/c++17/floating_to_chars.cc (uint128_t): New conditionally
6576         defined alias of unsigned __int128.
6577         (floating_type_traits_binary128::mantissa_t): Use uint128_t
6578         instead of unsigned __int128.
6579         (floating_type_traits<long double>::mantissa_t)
6580         [LONG_DOUBLE_KIND == LDK_IBM128]: Likewise.
6581         (get_ieee_repr): Likewise.  Make casts from uint_t to mantissa_t
6582         and uint32_t explicit.  Simplify the extraction of mantissa,
6583         exponent and sign bit.
6584
6585 2021-03-11  Jonathan Wakely  <jwakely@redhat.com>
6586
6587         * include/std/barrier (barrier::arrival_token): New move-only
6588         class that encapsulates the underlying token value.
6589
6590 2021-03-11  Jonathan Wakely  <jwakely@redhat.com>
6591
6592         * python/libstdcxx/v6/printers.py (find_type): Use tag attribute
6593         instead of unqualified() method.
6594
6595 2021-03-11  Jonathan Wakely  <jwakely@redhat.com>
6596
6597         PR libstdc++/99537
6598         * include/std/stop_token (_Stop_state_t::_M_release_ownership):
6599         Use acq_rel memory ordering.
6600
6601 2021-03-11  Jonathan Wakely  <jwakely@redhat.com>
6602
6603         PR libstdc++/99533
6604         * src/c++17/fs_dir.cc (recursive_directory_iterator): Use new
6605         helper function to check for permission denied errors.
6606         * src/filesystem/dir.cc (recursive_directory_iterator):
6607         Likewise.
6608         * src/filesystem/dir-common.h (is_permission_denied_error): New
6609         helper function.
6610
6611 2021-03-11  Jonathan Wakely  <jwakely@redhat.com>
6612
6613         PR libstdc++/99536
6614         * include/bits/random.h (normal_distribution): Use
6615         default-initializer for _M_saved and _M_saved_available.
6616
6617 2021-03-10  John David Anglin  <danglin@gcc.gnu.org>
6618
6619         * testsuite/29_atomics/atomic/wait_notify/bool.cc: Add options to
6620         link with libatomic.
6621         * testsuite/29_atomics/atomic/wait_notify/generic.cc: Likewise.
6622         * testsuite/29_atomics/atomic/wait_notify/pointers.cc: Likewise.
6623         * testsuite/29_atomics/atomic_flag/wait_notify/1.cc: Likewise.
6624         * testsuite/30_threads/barrier/arrive.cc: Likewise.
6625         * testsuite/30_threads/barrier/arrive_and_drop.cc: Likewise.
6626         * testsuite/30_threads/barrier/arrive_and_wait.cc: Likewise.
6627         * testsuite/30_threads/barrier/completion.cc: Likewise.
6628         * testsuite/30_threads/latch/3.cc: Likewise.
6629         * testsuite/30_threads/semaphore/try_acquire.cc: Likewise.
6630         * testsuite/30_threads/semaphore/try_acquire_for.cc: Likewise.
6631         * testsuite/30_threads/semaphore/try_acquire_until.cc: Likewise.
6632
6633 2021-03-10  Jonathan Wakely  <jwakely@redhat.com>
6634
6635         PR libstdc++/99413
6636         * include/bits/align.h: Include debug/assertions.h.
6637         * include/bits/codecvt.h: Include bits/c++config.h.
6638         * include/bits/enable_special_members.h: Likewise.
6639         * include/bits/erase_if.h: Likewise.
6640         * include/bits/functional_hash.h: Include <type_traits>.
6641         * include/bits/invoke.h: Include bits/move.h.
6642         * include/bits/ostream_insert.h: Include bits/exception_defines.h.
6643         * include/bits/parse_numbers.h: Include <type_traits>.
6644         * include/bits/predefined_ops.h: Include bits/c++config.h.
6645         * include/bits/range_access.h: Include bits/stl_iterator.h.
6646         * include/bits/stl_bvector.h: Do not include bits/stl_vector.h.
6647         * include/bits/stl_iterator.h: Include bits/stl_iterator_base_types.h.
6648         * include/bits/stl_uninitialized.h: Include bits/stl_algobase.h.
6649         * include/bits/uniform_int_dist.h: Include bits/concept_check.h.
6650         * include/bits/unique_lock.h: Include bits/std_mutex.h.
6651         * include/debug/assertions.h: Include bits/c++config.h.
6652
6653 2021-03-10  Jonathan Wakely  <jwakely@redhat.com>
6654
6655         * include/bits/ranges_cmp.h (__eq_builtin_ptr_cmp): Remove.
6656         (ranges::equal_to, ranges::not_equal_to): Do not constrain
6657         with __eq_builtin_ptr_cmp.
6658         (ranges::less, ranges::greater, ranges::less_equal)
6659         (ranges::greater_equal): Do not constrain with
6660         __less_builtin_ptr_cmp.
6661         * libsupc++/compare (compare_three_way): Do not constrain with
6662         __3way_builtin_ptr_cmp.
6663         * testsuite/18_support/comparisons/object/builtin-ptr-three-way.cc: Moved to...
6664         * testsuite/18_support/comparisons/object/lwg3530.cc: ...here.
6665         * testsuite/20_util/function_objects/range.cmp/lwg3530.cc: New test.
6666
6667 2021-03-10  Jonathan Wakely  <jwakely@redhat.com>
6668
6669         * testsuite/std/time/syn_c++20.cc: Enable synopsis checks for
6670         C++20 calendar types.
6671
6672 2021-03-06  Jakub Jelinek  <jakub@redhat.com>
6673
6674         PR libstdc++/99396
6675         * include/std/bit (__rotl, __rotr): Add optimized variants for power of
6676         two _Nd which the compiler can pattern match the rotates.
6677
6678 2021-03-04  Jonathan Wakely  <jwakely@redhat.com>
6679
6680         PR libstdc++/99382
6681         * testsuite/20_util/specialized_algorithms/uninitialized_default_n/sizes.cc:
6682         Make storage larger than required. Verify no write to the last
6683         element.
6684         * testsuite/20_util/specialized_algorithms/uninitialized_value_construct_n/sizes.cc:
6685         Likewise.
6686
6687 2021-03-03  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
6688
6689         * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
6690         * config/abi/post/i386-solaris/amd64/baseline_symbols.txt:
6691         Likewise.
6692         * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
6693         * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
6694         Likewise.
6695
6696 2021-03-03  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
6697
6698         * include/experimental/bits/simd.h: Replace reserved _X, _B by
6699         _Xp, _Bp.
6700         * include/experimental/bits/simd_builtin.h: Likewise.
6701         * include/experimental/bits/simd_x86.h: Likewise.
6702
6703 2021-02-27  Jonathan Wakely  <jwakely@redhat.com>
6704
6705         PR libstdc++/99301
6706         * include/std/chrono (year_month_day::_M_days_since_epoch()):
6707         Convert chrono::month and chrono::day to unsigned before
6708         converting to uint32_t.
6709
6710 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
6711
6712         * include/std/chrono (year_month_day::_S_from_days): Perform
6713         all calculations with type uint32_t.
6714
6715 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
6716
6717         * doc/xml/manual/abi.xml: Document versioning for GCC 11.
6718         * doc/html/manual/abi.html: Regenerate.
6719
6720 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
6721
6722         PR libstdc++/99270
6723         * testsuite/27_io/headers/cstdio/types_std.cc: Use pointer to
6724         FILE instead of FILE.
6725
6726 2021-02-25  Andreas Schwab  <schwab@suse.de>
6727
6728         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
6729         * config/abi/post/ia64-linux-gnu/baseline_symbols.txt: Update.
6730         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
6731         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
6732
6733 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
6734
6735         PR libstdc++/99265
6736         * include/std/chrono (year_month_day::_S_from_days): Cast long
6737         to int explicitly.
6738
6739 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
6740
6741         * include/std/utility (to_underlying): Define.
6742         * include/std/version (__cpp_lib_to_underlying): Define.
6743         * testsuite/20_util/to_underlying/1.cc: New test.
6744         * testsuite/20_util/to_underlying/version.cc: New test.
6745
6746 2021-02-24  Jonathan Wakely  <jwakely@redhat.com>
6747
6748         PR libstdc++/99261
6749         * src/c++17/floating_to_chars.cc (sprintf_ld): Add extra args
6750         before value to be printed.
6751
6752 2021-02-24  Patrick Palka  <ppalka@redhat.com>
6753
6754         * src/c++17/floating_to_chars.cc (__floating_to_chars_precision):
6755         Relax the condition that guards the printf code path to accept
6756         F128_type as well as long double.
6757
6758 2021-02-24  Cassio Neri  <cassio.neri@gmail.com>
6759
6760         * include/std/chrono (year_month_day_last:day): New
6761         implementation.
6762
6763 2021-02-24  Cassio Neri  <cassio.neri@gmail.com>
6764
6765         * include/std/chrono (year::is_leap): New implementation.
6766         * testsuite/std/time/year/2.cc: New test.
6767
6768 2021-02-24  Cassio Neri  <cassio.neri@gmail.com>
6769
6770         * include/std/chrono (year_month_day::_M_days_since_epoch):
6771         New implementation.
6772         * testsuite/std/time/year_month_day/4.cc: New test.
6773
6774 2021-02-24  Cassio Neri  <cassio.neri@gmail.com>
6775
6776         * include/std/chrono (year_month_day::_S_from_days): New
6777         implementation.
6778         * testsuite/std/time/year_month_day/3.cc: New test.
6779
6780 2021-02-24  Patrick Palka  <ppalka@redhat.com>
6781
6782         PR libstdc++/98384
6783         * testsuite/20_util/to_chars/long_double.cc: Include <optional>.
6784         (test01): Simplify verifying the nearby values by using a
6785         2-iteration loop and a dedicated output buffer to check that the
6786         nearby values are different.  Factor out the printf-based
6787         verification into a local function, and check that the leading
6788         hex digits agree before comparing to the output of printf.  Also
6789         verify the output by round-tripping it through from_chars.
6790
6791 2021-02-24  Jonathan Wakely  <jwakely@redhat.com>
6792
6793         PR libstdc++/98389
6794         * config/abi/pre/gnu.ver (GLIBCXX_3.4.29): Do not match to_chars
6795         symbols for long double arguments mangled as 'g'.
6796         * config/os/gnu-linux/ldbl-extra.ver: Likewise.
6797         * config/os/gnu-linux/ldbl-ieee128-extra.ver: Likewise.
6798         * src/c++17/Makefile.am [GLIBCXX_LDBL_ALT128_COMPAT_TRUE]:
6799         Use -mabi=ibmlongdouble for floating_to_chars.cc.
6800         * src/c++17/Makefile.in: Regenerate.
6801         * src/c++17/floating_to_chars.cc (floating_type_traits_binary128):
6802         New type defining type traits of IEEE binary128 format.
6803         (floating_type_traits<__float128>): Define specialization.
6804         (floating_type_traits<long double>): Define in terms of
6805         floating_type_traits_binary128 when appropriate.
6806         (floating_to_shortest_scientific): Handle __float128.
6807         (sprintf_ld): New function template for printing a long double
6808         or __ieee128 value using sprintf.
6809         (__floating_to_chars_shortest, __floating_to_chars_precision):
6810         Use sprintf_ld.
6811         (to_chars): Define overloads for __float128.
6812
6813 2021-02-24  Jonathan Wakely  <jwakely@redhat.com>
6814
6815         * testsuite/17_intro/names.cc: Undefine 'u' on powerpc*-linux*.
6816
6817 2021-02-23  Martin Sebor  <msebor@redhat.com>
6818
6819         PR c++/99074
6820         * libsupc++/dyncast.cc (__dynamic_cast): Return null when
6821         first argument is null.
6822
6823 2021-02-23  Jakub Jelinek  <jakub@redhat.com>
6824
6825         PR libstdc++/99181
6826         * testsuite/21_strings/char_traits/requirements/char/99181.cc: New
6827         test.
6828
6829 2021-02-23  Jakub Jelinek  <jakub@redhat.com>
6830
6831         PR libstdc++/99181
6832         * include/bits/char_traits.h (char_traits<char>::compare): For
6833         constexpr evaluation don't call
6834         __gnu_cxx::char_traits<char_type>::compare but do the comparison loop
6835         directly.
6836
6837 2021-02-23  Jakub Jelinek  <jakub@redhat.com>
6838
6839         PR libstdc++/97549
6840         * include/pstl/parallel_backend_serial.h: Remove __pstl::__par_backend.
6841
6842 2021-02-23  Patrick Palka  <ppalka@redhat.com>
6843
6844         PR libstdc++/98384
6845         * src/c++17/floating_to_chars.cc (get_ieee_repr): Extract
6846         the high- and low-order parts from an IBM long double value
6847         in an endian-agnostic way.
6848
6849 2021-02-19  Jonathan Wakely  <jwakely@redhat.com>
6850
6851         * include/bits/atomic_wait.h (__thread_relax()): Call
6852         __thread_yield() not __gthread_yield().
6853
6854 2021-02-15  Jonathan Wakely  <jwakely@redhat.com>
6855
6856         * include/bits/atomic_wait.h (__thread_yield()): Check
6857         _GLIBCXX_HAS_GTHREADS before using __gthread_yield.
6858         (__thread_relax()): Use __thread_yield() instead of repeating
6859         the preprocessor checks for __gthread_yield.
6860
6861 2021-02-15  Jonathan Wakely  <jwakely@redhat.com>
6862
6863         * include/std/mutex (once_flag::_M_activate()): Add explicit
6864         return statement for passive case.
6865         (once_flag::_M_finish(bool)): Use reserved name for parameter.
6866
6867 2021-02-14  Jonathan Wakely  <jwakely@redhat.com>
6868
6869         PR libstdc++/99096
6870         * testsuite/util/testsuite_fs.h: Always include <unistd.h>.
6871
6872 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
6873
6874         PR libstdc++/88881
6875         * src/c++17/fs_ops.cc (fs::symlink_status): Re-enable workaround.
6876
6877 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
6878
6879         * doc/xml/manual/status_cxx2014.xml: Document implementation
6880         specific properties of std::experimental::filesystem::rename.
6881         * doc/xml/manual/status_cxx2017.xml: Document implementation
6882         specific properties of std::filesystem::rename.
6883         * doc/html/*: Regenerate.
6884         * src/c++17/fs_ops.cc (fs::rename): Implement correct behaviour
6885         for directories on Windows.
6886         * src/filesystem/ops-common.h (__gnu_posix::rename): Use
6887         MoveFileExW on Windows.
6888         * testsuite/27_io/filesystem/operations/rename.cc: New test.
6889         * testsuite/experimental/filesystem/operations/rename.cc: New test.
6890
6891 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
6892
6893         * testsuite/util/testsuite_fs.h (nonexistent_path): Add
6894         random number to the path.
6895
6896 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
6897
6898         * include/experimental/internet (address_v6::to_string): Include
6899         scope ID in string.
6900         * testsuite/experimental/net/internet/address/v6/members.cc:
6901         Test to_string() results.
6902
6903 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
6904
6905         * include/experimental/internet (address_v6::any): Avoid using
6906         memcpy in constexpr function.
6907         (address_v6::loopback): Likewise.
6908         (make_address_v6): Fix missing return statements on error paths.
6909         * include/experimental/io_context: Avoid -Wdangling-else
6910         warning.
6911         * testsuite/experimental/net/internet/address/v4/members.cc:
6912         Remove unused variables.
6913         * testsuite/experimental/net/internet/address/v6/members.cc:
6914         New test.
6915
6916 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
6917
6918         * include/bits/shared_ptr_base.h (__shared_ptr::_M_get_deleter):
6919         Add unused attribute to parameter.
6920         * src/c++11/shared_ptr.cc (_Sp_make_shared_tag::_S_eq):
6921         Likewise.
6922
6923 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
6924
6925         * testsuite/27_io/basic_ostream/emit/1.cc: Expect test to fail
6926         if -fno-rtti is used.
6927         * testsuite/30_threads/async/forced_unwind.cc: Expect test
6928         to abort if -fno-rtti is used.
6929
6930 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
6931
6932         * testsuite/util/testsuite_allocator.h (memory_resource):
6933         Remove requirement for RTTI and exceptions to be enabled.
6934
6935 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
6936
6937         * testsuite/27_io/basic_istringstream/rdbuf/char/2832.cc: Use
6938         static_cast when RTTI is disabled.
6939         * testsuite/27_io/basic_istringstream/rdbuf/wchar_t/2832.cc:
6940         Likewise.
6941         * testsuite/27_io/basic_ostringstream/rdbuf/char/2832.cc:
6942         Likewise.
6943         * testsuite/27_io/basic_ostringstream/rdbuf/wchar_t/2832.cc:
6944         Likewise.
6945         * testsuite/27_io/basic_stringstream/str/char/2.cc:
6946         Likewise.
6947         * testsuite/27_io/basic_stringstream/str/wchar_t/2.cc:
6948         Likewise.
6949
6950 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
6951
6952         * include/std/ostream (__syncbuf_base::_S_get): Mark parameter
6953         as unused and only use dynamic_cast when RTTI is enabled.
6954
6955 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
6956
6957         PR libstdc++/99077
6958         * src/c++11/cxx11-ios_failure.cc (__ios_failure(const char*, int)):
6959         Change int parameter to error_code, to match std::ios_failure.
6960         (__throw_ios_failure(const char*, int)): Construct error_code
6961         from int parameter.
6962
6963 2021-02-11  Jonathan Wakely  <jwakely@redhat.com>
6964
6965         * libsupc++/eh_ptr.cc (_GLIBCXX_EH_PTR_RELOPS_COMPAT): Define
6966         new macro.
6967         * libsupc++/exception_ptr.h (_GLIBCXX_EH_PTR_USED): Check new
6968         macro instead of _GLIBCXX_EH_PTR_COMPAT.
6969         (operator==): Likewise.
6970
6971 2021-02-11  Jonathan Wakely  <jwakely@redhat.com>
6972
6973         PR libstdc++/99058
6974         * doc/xml/manual/status_cxx2011.xml: Document when support
6975         became stable.
6976         * doc/xml/manual/status_cxx2014.xml: Likewise.
6977         * doc/xml/manual/status_cxx2017.xml: Likewise.
6978         * doc/html/manual/status.html: Regenerate.
6979
6980 2021-02-10  Jonathan Wakely  <jwakely@redhat.com>
6981
6982         PR libstdc++/88881
6983         * src/c++17/fs_ops.cc (fs::status): Re-enable workaround.
6984
6985 2021-02-10  Jonathan Wakely  <jwakely@redhat.com>
6986
6987         * src/c++17/fs_ops.cc (fs::create_hard_link, fs::equivalent)
6988         (fs::remove): Use std::system_category() for error codes from
6989         GetLastError().
6990         * src/filesystem/ops.cc (fs::create_hard_link, fs::remove):
6991         Likewise.
6992
6993 2021-02-10  Jonathan Wakely  <jwakely@redhat.com>
6994
6995         * testsuite/27_io/filesystem/operations/proximate.cc: Fix typo
6996         in __MINGW32__ macro name.
6997         * testsuite/27_io/filesystem/path/compare/lwg2936.cc: Likewise.
6998         * testsuite/27_io/filesystem/path/generation/proximate.cc:
6999         Likewise.
7000         * testsuite/27_io/filesystem/path/generation/relative.cc:
7001         Likewise.
7002         * testsuite/util/testsuite_fs.h: Likewise.
7003
7004 2021-02-09  François Dumont  <fdumont@gcc.gnu.org>
7005
7006         * include/bits/stl_tree.h
7007         (__has_is_transparent, __has_is_transparent_t): Move...
7008         * include/bits/stl_function.h: ...here.
7009         * include/bits/hashtable_policy.h (_Hash_code_base<>::_M_hash_code_tr): New..
7010         (_Hashtable_base<>::_M_equals_tr): New.
7011         * include/bits/hashtable.h (_Hashtable<>::_M_find_tr, _Hashtable<>::_M_count_tr,
7012         _Hashtable<>::_M_equal_range_tr): New member function templates to perform
7013         heterogeneous lookup.
7014         (_Hashtable<>::_M_find_before_node_tr): New.
7015         (_Hashtable<>::_M_find_node_tr): New.
7016         * include/bits/unordered_map.h (unordered_map::find<>, unordered_map::count<>,
7017         unordered_map::contains<>, unordered_map::equal_range<>): New member function
7018         templates to perform heterogeneous lookup.
7019         (unordered_multimap::find<>, unordered_multimap::count<>,
7020         unordered_multimap::contains<>, unordered_multimap::equal_range<>): Likewise.
7021         * include/bits/unordered_set.h  (unordered_set::find<>, unordered_set::count<>,
7022         unordered_set::contains<>, unordered_set::equal_range<>): Likewise.
7023         (unordered_multiset::find<>, unordered_multiset::count<>,
7024         unordered_multiset::contains<>, unordered_multiset::equal_range<>): Likewise.
7025         * include/debug/unordered_map
7026         (unordered_map::find<>, unordered_map::equal_range<>): Likewise.
7027         (unordered_multimap::find<>, unordered_multimap::equal_range<>): Likewise.
7028         * include/debug/unordered_set
7029         (unordered_set::find<>, unordered_set::equal_range<>): Likewise.
7030         (unordered_multiset::find<>, unordered_multiset::equal_range<>): Likewise.
7031         * testsuite/23_containers/unordered_map/operations/1.cc: New test.
7032         * testsuite/23_containers/unordered_multimap/operations/1.cc: New test.
7033         * testsuite/23_containers/unordered_multiset/operations/1.cc: New test.
7034         * testsuite/23_containers/unordered_set/operations/1.cc: New test.
7035
7036 2021-02-09  François Dumont  <fdumont@gcc.gnu.org>
7037
7038         * include/bits/stl_deque.h
7039         (std::operator-(deque::iterator, deque::iterator)): Replace if/then with
7040         a null pointer test.
7041
7042 2021-02-09  Jonathan Wakely  <jwakely@redhat.com>
7043
7044         * testsuite/27_io/filesystem/operations/remove_all.cc: Remove
7045         test directory after making it writable again.
7046         * testsuite/experimental/filesystem/operations/remove_all.cc:
7047         Likewise.
7048
7049 2021-02-09  Jonathan Wakely  <jwakely@redhat.com>
7050
7051         PR libstdc++/99021
7052         * include/std/coroutine (coroutine_handle<P>::from_address): Add
7053         noexcept.
7054
7055 2021-02-09  Vladimir Vishnevsky  <vv.os.swe@gmail.com>
7056
7057         * include/ext/stdio_sync_filebuf.h: Remove unused <unistd.h>.
7058         * src/c++17/fs_ops.cc (fs::permissions): Qualify mode_t.
7059
7060 2021-02-09  Jakub Jelinek  <jakub@redhat.com>
7061
7062         PR middle-end/98465
7063         * include/bits/basic_string.tcc (basic_string::_M_replace): When __s
7064         points to the characters moved by earlier _S_move, compute the source
7065         address using expression based on the __p pointer rather than __s
7066         pointer.
7067
7068 2021-02-03  Jonathan Wakely  <jwakely@redhat.com>
7069
7070         * testsuite/19_diagnostics/error_code/operators/not_equal.cc:
7071         Add comparison with same category and different values.
7072         * testsuite/19_diagnostics/error_code/operators/less.cc:
7073         Likewise. Fix comparison involving different categories.
7074         * testsuite/19_diagnostics/error_code/operators/three_way.cc:
7075         Likewise.
7076         * testsuite/19_diagnostics/error_condition/operators/less.cc:
7077         Add comment.
7078         * testsuite/19_diagnostics/error_condition/operators/three_way.cc:
7079         Likewise.
7080
7081 2021-02-03  yaozhongxiao  <yaozhongxiao@linux.alibaba.com>
7082
7083         * include/experimental/bits/simd_neon.h: Replace repeated vpadd
7084         calls with a single vaddv for aarch64.
7085
7086 2021-02-03  Matthias Kretz  <kretz@kde.org>
7087
7088         * testsuite/Makefile.am: Warn about the workaround. Add
7089         -fno-tree-vrp to CXXFLAGS passed to the check_simd script.
7090         Improve initial user feedback from make check-simd.
7091         * testsuite/Makefile.in: Regenerated.
7092
7093 2021-02-03  Matthias Kretz  <kretz@kde.org>
7094
7095         * include/experimental/bits/simd.h: Add __detail::_Minimum and
7096         __detail::_Maximum to use them as _BinaryOperation to _S_reduce.
7097         Add hmin and hmax overloads for simd and const_where_expression.
7098         * include/experimental/bits/simd_scalar.h
7099         (_SimdImplScalar::_S_reduce): Make unused _BinaryOperation
7100         parameter const-ref to allow calling _S_reduce with an rvalue.
7101         * testsuite/experimental/simd/tests/reductions.cc: Add tests for
7102         hmin and hmax. Since the compiler statically determined that all
7103         tests pass, repeat the test after a call to make_value_unknown.
7104
7105 2021-02-03  Matthias Kretz  <kretz@kde.org>
7106
7107         * testsuite/experimental/simd/tests/bits/verify.h (verify): Add
7108         instruction pointer data member. Ensure that the `if (m_failed)`
7109         branch is always inlined into the calling code. The body of the
7110         conditional can still be a function call. Move the get_ip call
7111         into the verify ctor to simplify the ctor calls.
7112         (COMPARE): Don't mention the use of all_of for reduction of a
7113         simd_mask. It only distracts from the real issue.
7114
7115 2021-02-03  Matthias Kretz  <kretz@kde.org>
7116
7117         * testsuite/experimental/simd/driver.sh: Abstract reading test
7118         options into read_src_option function. Read skip, only,
7119         expensive, and xfail via read_src_option. Add timeout and
7120         timeout-factor options and adjust timeout variable accordingly.
7121         * testsuite/experimental/simd/tests/loadstore.cc: Set
7122         timeout-factor 2.
7123
7124 2021-02-03  Matthias Kretz  <kretz@kde.org>
7125
7126         * testsuite/experimental/simd/driver.sh: When handling the pipe
7127         to log (and on verbose to stdout) count the lines. If it exceeds
7128         1000 log the issue and exit 125, which is then handled as a
7129         failure.
7130
7131 2021-02-03  Matthias Kretz  <kretz@kde.org>
7132
7133         * testsuite/experimental/simd/tests/hypot3_fma.cc: Add skip:
7134         markup for long double on powerpc64*.
7135
7136 2021-02-03  Matthias Kretz  <kretz@kde.org>
7137
7138         * include/experimental/bits/simd.h: Add __have_power10vec
7139         conditional on _ARCH_PWR10.
7140         * include/experimental/bits/simd_builtin.h: Forward declare
7141         _MaskImplPpc and use it as _MaskImpl when __ALTIVEC__ is
7142         defined.
7143         (_MaskImplBuiltin::_S_some_of): Call _S_popcount from the
7144         _SuperImpl for optimizations and correctness.
7145         * include/experimental/bits/simd_ppc.h: Add _MaskImplPpc.
7146         (_MaskImplPpc::_S_popcount): Implement via vec_cntm for POWER10.
7147         Otherwise, for >=int use -vec_sums divided by a sizeof factor.
7148         For <int use -vec_sums(vec_sum4s(...)) to sum all mask entries.
7149
7150 2021-02-03  Matthias Kretz  <kretz@kde.org>
7151
7152         * testsuite/experimental/simd/driver.sh: Remove executable on
7153         SIGINT. Process compiler and test executable output: In verbose
7154         mode print messages immediately, limited to 1000 lines and
7155         breaking long lines to below $COLUMNS (or 1024 if not set).
7156         Communicating the exit status of the compiler / test with the
7157         necessary pipe is done via a message through stdout/-in.
7158
7159 2021-02-03  Matthias Kretz  <kretz@kde.org>
7160
7161         * testsuite/Makefile.am: Ensure .simd.summary is empty before
7162         collecting a new summary.
7163         * testsuite/Makefile.in: Regenerate.
7164
7165 2021-02-03  Matthias Kretz  <kretz@kde.org>
7166
7167         * testsuite/experimental/simd/generate_makefile.sh: Use
7168         different variables internally than documented for user
7169         overrides. This makes internal append/prepend work as intended.
7170
7171 2021-02-03  Matthias Kretz  <kretz@kde.org>
7172
7173         * testsuite/experimental/simd/driver.sh (verify_test): Print
7174         test output on run xfail. Do not repeat lines from the log that
7175         were already printed on stdout.
7176         (test_selector): Make the compiler flags pattern usable as a
7177         substring selector.
7178         (toplevel): Trap on SIGINT and remove the log and sum files.
7179         Call timout with --foreground to quickly terminate on SIGINT.
7180         * testsuite/experimental/simd/generate_makefile.sh: Simplify run
7181         targets via target patterns. Default DRIVEROPTS to -v for run
7182         targets. Remove log and sum files after completion of the run
7183         target (so that it's always recompiled).
7184         Place help text into text file for reasonable 'make help'
7185         performance.
7186
7187 2021-02-03  Matthias Kretz  <kretz@kde.org>
7188
7189         * include/experimental/bits/simd.h: Remove unnecessary static
7190         assertion. Allow sizeof(8) integer __intrinsic_type to enable
7191         the necessary mask type.
7192
7193 2021-02-03  Matthias Kretz  <kretz@kde.org>
7194
7195         * include/experimental/bits/simd.h: Let __intrinsic_type<long
7196         double, N> be valid if sizeof(long double) == sizeof(double) and
7197         use a __vector double as member type.
7198
7199 2021-02-03  Matthias Kretz  <kretz@kde.org>
7200
7201         * include/experimental/bits/simd.h (__is_intrinsic_type): New
7202         internal type trait. Alias for __is_vector_type on x86.
7203         (_VectorTraitsImpl): Enable for __intrinsic_type in addition for
7204         __vector_type.
7205         (__intrin_bitcast): Allow casting to & from vector & intrinsic
7206         types.
7207         (__intrinsic_type): Explicitly specialize for NEON intrinsic
7208         vector types.
7209
7210 2021-02-03  Matthias Kretz  <kretz@kde.org>
7211
7212         * testsuite/experimental/simd/driver.sh: Implement skip, only,
7213         expensive, and xfail markers. They can select on type, ABI tag
7214         subset number, target-triplet, and compiler flags.
7215         * testsuite/experimental/simd/generate_makefile.sh: The summary
7216         now includes lines for unexpected passes and expected failures.
7217         If the skip or only markers are only conditional on the type, do
7218         not generate rules for those types.
7219         * testsuite/experimental/simd/tests/abs.cc: Mark test expensive
7220         for ABI tag subsets 1-9.
7221         * testsuite/experimental/simd/tests/algorithms.cc: Ditto.
7222         * testsuite/experimental/simd/tests/broadcast.cc: Ditto.
7223         * testsuite/experimental/simd/tests/casts.cc: Ditto.
7224         * testsuite/experimental/simd/tests/generator.cc: Ditto.
7225         * testsuite/experimental/simd/tests/integer_operators.cc: Ditto.
7226         * testsuite/experimental/simd/tests/loadstore.cc: Ditto.
7227         * testsuite/experimental/simd/tests/mask_broadcast.cc: Ditto.
7228         * testsuite/experimental/simd/tests/mask_conversions.cc: Ditto.
7229         * testsuite/experimental/simd/tests/mask_implicit_cvt.cc: Ditto.
7230         * testsuite/experimental/simd/tests/mask_loadstore.cc: Ditto.
7231         * testsuite/experimental/simd/tests/mask_operator_cvt.cc: Ditto.
7232         * testsuite/experimental/simd/tests/mask_operators.cc: Ditto.
7233         * testsuite/experimental/simd/tests/mask_reductions.cc: Ditto.
7234         * testsuite/experimental/simd/tests/operator_cvt.cc: Ditto.
7235         * testsuite/experimental/simd/tests/operators.cc: Ditto.
7236         * testsuite/experimental/simd/tests/reductions.cc: Ditto.
7237         * testsuite/experimental/simd/tests/simd.cc: Ditto.
7238         * testsuite/experimental/simd/tests/split_concat.cc: Ditto.
7239         * testsuite/experimental/simd/tests/splits.cc: Ditto.
7240         * testsuite/experimental/simd/tests/where.cc: Ditto.
7241         * testsuite/experimental/simd/tests/fpclassify.cc: Ditto. In
7242         addition replace "test only floattypes" marker by unconditional
7243         "float|double|ldouble" only marker.
7244         * testsuite/experimental/simd/tests/frexp.cc: Ditto.
7245         * testsuite/experimental/simd/tests/hypot3_fma.cc: Ditto.
7246         * testsuite/experimental/simd/tests/ldexp_scalbn_scalbln_modf.cc:
7247         Ditto.
7248         * testsuite/experimental/simd/tests/logarithm.cc: Ditto.
7249         * testsuite/experimental/simd/tests/math_1arg.cc: Ditto.
7250         * testsuite/experimental/simd/tests/math_2arg.cc: Ditto.
7251         * testsuite/experimental/simd/tests/remqo.cc: Ditto.
7252         * testsuite/experimental/simd/tests/trigonometric.cc: Ditto.
7253         * testsuite/experimental/simd/tests/trunc_ceil_floor.cc: Ditto.
7254         * testsuite/experimental/simd/tests/sincos.cc: Ditto. In
7255         addition, xfail on run because the reference data is missing.
7256
7257 2021-02-02  Jonathan Wakely  <jwakely@redhat.com>
7258
7259         * doc/xml/manual/status_cxx2011.xml: Remove stray table cell.
7260         * doc/xml/manual/status_cxx2014.xml: Likewise.
7261         * doc/xml/manual/status_cxx2017.xml: Likewise.
7262         * doc/html/manual/status.html: Regenerate.
7263
7264 2021-02-01  François Dumont  <fdumont@gcc.gnu.org>
7265
7266         PR libstdc++/70303
7267         * include/bits/stl_deque.h (std::deque<>::operator-(iterator, iterator)):
7268         Return 0 if both iterators are value-initialized.
7269         * testsuite/23_containers/deque/70303.cc: New test.
7270         * testsuite/23_containers/vector/70303.cc: New test.
7271
7272 2021-02-01  Jonathan Wakely  <jwakely@redhat.com>
7273
7274         * doc/xml/manual/status_cxx2011.xml: Update std::call_once
7275         status.
7276         * doc/xml/manual/status_cxx2014.xml: Likewise.
7277         * doc/xml/manual/status_cxx2017.xml: Likewise. Update
7278         std::from_chars and std::to_chars status. Fix formatting.
7279         * doc/html/manual/status.html: Regenerate.
7280
7281 2021-01-28  Jonathan Wakely  <jwakely@redhat.com>
7282
7283         * include/experimental/bits/numeric_traits.h: Update copyright
7284         dates.
7285         * include/experimental/bits/simd.h: Likewise.
7286         * include/experimental/bits/simd_builtin.h: Likewise.
7287         * include/experimental/bits/simd_converter.h: Likewise.
7288         * include/experimental/bits/simd_detail.h: Likewise.
7289         * include/experimental/bits/simd_fixed_size.h: Likewise.
7290         * include/experimental/bits/simd_math.h: Likewise.
7291         * include/experimental/bits/simd_neon.h: Likewise.
7292         * include/experimental/bits/simd_ppc.h: Likewise.
7293         * include/experimental/bits/simd_scalar.h: Likewise.
7294         * include/experimental/bits/simd_x86.h: Likewise.
7295         * include/experimental/bits/simd_x86_conversions.h: Likewise.
7296         * include/experimental/simd: Likewise.
7297         * testsuite/experimental/simd/*: Likewise.
7298
7299 2021-01-27  Jonathan Wakely  <jwakely@redhat.com>
7300
7301         * doc/xml/manual/status_cxx2017.xml: Replace invalid entity.
7302         * doc/html/*: Regenerate.
7303
7304 2021-01-27  Jonathan Wakely  <jwakely@redhat.com>
7305
7306         * testsuite/experimental/simd/generate_makefile.sh: Use printf
7307         instead of echo when printing escape characters.
7308
7309 2021-01-27  Matthias Kretz  <kretz@kde.org>
7310
7311         * scripts/check_simd: New file. This script is called from the
7312         the check-simd target. It determines a set of compiler flags and
7313         simulator setups for calling generate_makefile.sh and passes the
7314         information back to the check-simd target, which recurses to the
7315         generated Makefiles.
7316         * scripts/create_testsuite_files: Remove files below simd/tests/
7317         from testsuite_files and place them in testsuite_files_simd.
7318         * testsuite/Makefile.am: Add testsuite_files_simd. Add
7319         check-simd target.
7320         * testsuite/Makefile.in: Regenerate.
7321         * testsuite/experimental/simd/driver.sh: New file. This script
7322         compiles and runs a given simd test, logging its output and
7323         status. It uses the timeout command to implement compile and
7324         test timeouts.
7325         * testsuite/experimental/simd/generate_makefile.sh: New file.
7326         This script generates a Makefile which uses driver.sh to compile
7327         and run the tests and collect the logs into a single log file.
7328         * testsuite/experimental/simd/tests/abs.cc: New file. Tests
7329         abs(simd).
7330         * testsuite/experimental/simd/tests/algorithms.cc: New file.
7331         Tests min/max(simd, simd).
7332         * testsuite/experimental/simd/tests/bits/conversions.h: New
7333         file. Contains functions to support tests involving conversions.
7334         * testsuite/experimental/simd/tests/bits/make_vec.h: New file.
7335         Support functions make_mask and make_vec.
7336         * testsuite/experimental/simd/tests/bits/mathreference.h: New
7337         file. Support functions to supply precomputed math function
7338         reference data.
7339         * testsuite/experimental/simd/tests/bits/metahelpers.h: New
7340         file. Support code for SFINAE testing.
7341         * testsuite/experimental/simd/tests/bits/simd_view.h: New file.
7342         * testsuite/experimental/simd/tests/bits/test_values.h: New
7343         file. Test functions to easily drive a test with simd objects
7344         initialized from a given list of values and a range of random
7345         values.
7346         * testsuite/experimental/simd/tests/bits/ulp.h: New file.
7347         Support code to determine the ULP distance of simd objects.
7348         * testsuite/experimental/simd/tests/bits/verify.h: New file.
7349         Test framework for COMPARE'ing simd objects and instantiating
7350         the test templates with value_type and ABI tag.
7351         * testsuite/experimental/simd/tests/broadcast.cc: New file. Test
7352         simd broadcasts.
7353         * testsuite/experimental/simd/tests/casts.cc: New file. Test
7354         simd casts.
7355         * testsuite/experimental/simd/tests/fpclassify.cc: New file.
7356         Test floating-point classification functions.
7357         * testsuite/experimental/simd/tests/frexp.cc: New file. Test
7358         frexp(simd).
7359         * testsuite/experimental/simd/tests/generator.cc: New file. Test
7360         simd generator constructor.
7361         * testsuite/experimental/simd/tests/hypot3_fma.cc: New file.
7362         Test 3-arg hypot(simd,simd,simd) and fma(simd,simd,sim).
7363         * testsuite/experimental/simd/tests/integer_operators.cc: New
7364         file. Test integer operators.
7365         * testsuite/experimental/simd/tests/ldexp_scalbn_scalbln_modf.cc:
7366         New file. Test ldexp(simd), scalbn(simd), scalbln(simd), and
7367         modf(simd).
7368         * testsuite/experimental/simd/tests/loadstore.cc: New file. Test
7369         (converting) simd loads and stores.
7370         * testsuite/experimental/simd/tests/logarithm.cc: New file. Test
7371         log*(simd).
7372         * testsuite/experimental/simd/tests/mask_broadcast.cc: New file.
7373         Test simd_mask broadcasts.
7374         * testsuite/experimental/simd/tests/mask_conversions.cc: New
7375         file. Test simd_mask conversions.
7376         * testsuite/experimental/simd/tests/mask_implicit_cvt.cc: New
7377         file. Test simd_mask implicit conversions.
7378         * testsuite/experimental/simd/tests/mask_loadstore.cc: New file.
7379         Test simd_mask loads and stores.
7380         * testsuite/experimental/simd/tests/mask_operator_cvt.cc: New
7381         file. Test simd_mask operators convert as specified.
7382         * testsuite/experimental/simd/tests/mask_operators.cc: New file.
7383         Test simd_mask compares, subscripts, and negation.
7384         * testsuite/experimental/simd/tests/mask_reductions.cc: New
7385         file. Test simd_mask reductions.
7386         * testsuite/experimental/simd/tests/math_1arg.cc: New file. Test
7387         1-arg math functions on simd.
7388         * testsuite/experimental/simd/tests/math_2arg.cc: New file. Test
7389         2-arg math functions on simd.
7390         * testsuite/experimental/simd/tests/operator_cvt.cc: New file.
7391         Test implicit conversions on simd binary operators behave as
7392         specified.
7393         * testsuite/experimental/simd/tests/operators.cc: New file. Test
7394         simd compares, subscripts, not, unary minus, plus, minus,
7395         multiplies, divides, increment, and decrement.
7396         * testsuite/experimental/simd/tests/reductions.cc: New file.
7397         Test reduce(simd).
7398         * testsuite/experimental/simd/tests/remqo.cc: New file. Test
7399         remqo(simd).
7400         * testsuite/experimental/simd/tests/simd.cc: New file. Basic
7401         sanity checks of simd types.
7402         * testsuite/experimental/simd/tests/sincos.cc: New file. Test
7403         sin(simd) and cos(simd).
7404         * testsuite/experimental/simd/tests/split_concat.cc: New file.
7405         Test split(simd) and concat(simd, simd).
7406         * testsuite/experimental/simd/tests/splits.cc: New file. Test
7407         split(simd_mask).
7408         * testsuite/experimental/simd/tests/trigonometric.cc: New file.
7409         Test remaining trigonometric functions on simd.
7410         * testsuite/experimental/simd/tests/trunc_ceil_floor.cc: New
7411         file. Test trunc(simd), ceil(simd), and floor(simd).
7412         * testsuite/experimental/simd/tests/where.cc: New file. Test
7413         masked operations using where.
7414
7415 2021-01-27  Matthias Kretz  <kretz@kde.org>
7416
7417         * doc/xml/manual/status_cxx2017.xml: Add implementation status
7418         of the Parallelism TS 2. Document implementation-defined types
7419         and behavior.
7420         * include/Makefile.am: Add new headers.
7421         * include/Makefile.in: Regenerate.
7422         * include/experimental/simd: New file. New header for
7423         Parallelism TS 2.
7424         * include/experimental/bits/numeric_traits.h: New file.
7425         Implementation of P1841R1 using internal naming. Addition of
7426         missing IEC559 functionality query.
7427         * include/experimental/bits/simd.h: New file. Definition of the
7428         public simd interfaces and general implementation helpers.
7429         * include/experimental/bits/simd_builtin.h: New file.
7430         Implementation of the _VecBuiltin simd_abi.
7431         * include/experimental/bits/simd_converter.h: New file. Generic
7432         simd conversions.
7433         * include/experimental/bits/simd_detail.h: New file. Internal
7434         macros for the simd implementation.
7435         * include/experimental/bits/simd_fixed_size.h: New file. Simd
7436         fixed_size ABI specific implementations.
7437         * include/experimental/bits/simd_math.h: New file. Math
7438         overloads for simd.
7439         * include/experimental/bits/simd_neon.h: New file. Simd NEON
7440         specific implementations.
7441         * include/experimental/bits/simd_ppc.h: New file. Implement bit
7442         shifts to avoid invalid results for integral types smaller than
7443         int.
7444         * include/experimental/bits/simd_scalar.h: New file. Simd scalar
7445         ABI specific implementations.
7446         * include/experimental/bits/simd_x86.h: New file. Simd x86
7447         specific implementations.
7448         * include/experimental/bits/simd_x86_conversions.h: New file.
7449         x86 specific conversion optimizations. The conversion patterns
7450         work around missing conversion patterns in the compiler and
7451         should be removed as soon as PR85048 is resolved.
7452         * testsuite/experimental/simd/standard_abi_usable.cc: New file.
7453         Test that all (not all fixed_size<N>, though) standard simd and
7454         simd_mask types are usable.
7455         * testsuite/experimental/simd/standard_abi_usable_2.cc: New
7456         file. As above but with -ffast-math.
7457         * testsuite/libstdc++-dg/conformance.exp: Don't build simd tests
7458         from the standard test loop. Instead use
7459         check_vect_support_and_set_flags to build simd tests with the
7460         relevant machine flags.
7461
7462 2021-01-27  Jonathan Wakely  <jwakely@redhat.com>
7463
7464         PR libstdc++/66414
7465         * include/bits/string_view.tcc
7466         (basic_string_view::find(const CharT*, size_type, size_type)):
7467         Optimize.
7468
7469 2021-01-27  Paul Fee  <paul.f.fee@gmail.com>
7470
7471         * include/bits/basic_string.h (basic_string::contains): New
7472         member functions.
7473         * include/std/string_view (basic_string_view::contains):
7474         Likewise.
7475         * include/std/version (__cpp_lib_string_contains): Define.
7476         * testsuite/21_strings/basic_string/operations/starts_with/char/1.cc:
7477         Remove trailing whitespace.
7478         * testsuite/21_strings/basic_string/operations/starts_with/wchar_t/1.cc:
7479         Likewise.
7480         * testsuite/21_strings/basic_string/operations/contains/char/1.cc: New test.
7481         * testsuite/21_strings/basic_string/operations/contains/wchar_t/1.cc: New test.
7482         * testsuite/21_strings/basic_string_view/operations/contains/char/1.cc: New test.
7483         * testsuite/21_strings/basic_string_view/operations/contains/char/2.cc: New test.
7484         * testsuite/21_strings/basic_string_view/operations/contains/wchar_t/1.cc: New test.
7485
7486 2021-01-21  Jonathan Wakely  <jwakely@redhat.com>
7487
7488         * src/c++17/Makefile.in: Regenerate.
7489
7490 2021-01-20  David Edelsohn  <dje.gcc@gmail.com>
7491
7492         * config/os/aix/ctype_inline.h (bool ctype<char>:: is): Cast
7493         _OBJ_DATA subscript to unsigned char. Add _THREAD_SAFE access to
7494         __lc_type.
7495         (const char* ctype<char>:: is): Same.
7496
7497 2021-01-18  Jonathan Wakely  <jwakely@redhat.com>
7498
7499         PR libstdc++/98725
7500         * testsuite/20_util/unique_ptr/io/lwg2948.cc:  Do not try to
7501         write to a wide character stream if wide character support is
7502         disabled in the library.
7503
7504 2021-01-18  Jonathan Wakely  <jwakely@redhat.com>
7505
7506         * testsuite/27_io/basic_stringstream/cons/char/1.cc: Use
7507         stringbuf not wstringbuf.
7508
7509 2021-01-18  Jakub Jelinek  <jakub@redhat.com>
7510
7511         PR debug/98708
7512         * src/c++11/Makefile.am (cxx11-ios_failure-lt.s, cxx11-ios_failure.s):
7513         Compile with -gno-as-loc-support.
7514         * src/c++11/Makefile.in: Regenerated.
7515
7516 2021-01-16  H.J. Lu  <hjl.tools@gmail.com>
7517
7518         * testsuite/29_atomics/atomic_flag/test_and_set/explicit-hle.cc:
7519         Add -fcf-protection=none to -march=i486.
7520
7521 2021-01-14  François Dumont  <fdumont@gcc.gnu.org>
7522
7523         * testsuite/23_containers/deque/debug/98466.cc: Make it pre-C++11
7524         compliant.
7525
7526 2021-01-14  Alexandre Oliva  <oliva@adacore.com>
7527
7528         * testsuite/30_threads/future/members/poll.cc: Calibrate
7529         iteration count.
7530
7531 2021-01-14  François Dumont  <fdumont@gcc.gnu.org>
7532
7533         PR libstdc++/98466
7534         * include/bits/hashtable_policy.h (_Node_iterator_base()): Set _M_cur to nullptr.
7535         (_Node_iterator()): Make default.
7536         (_Node_const_iterator()): Make default.
7537         * include/debug/macros.h (__glibcxx_check_erae_range_after): Add _M_singular
7538         iterator checks.
7539         * include/debug/safe_iterator.h
7540         (_GLIBCXX_DEBUG_VERIFY_OPERANDS): Accept if both iterator are value initialized.
7541         * include/debug/safe_local_iterator.h (_GLIBCXX_DEBUG_VERIFY_OPERANDS):
7542         Likewise.
7543         * include/debug/safe_iterator.tcc (_Safe_iterator<>::_M_valid_range): Add
7544         _M_singular checks on input iterators.
7545         * src/c++11/debug.cc (_Safe_iterator_base::_M_can_compare): Remove _M_singular
7546         checks.
7547         * testsuite/23_containers/deque/debug/98466.cc: New test.
7548         * testsuite/23_containers/unordered_map/debug/98466.cc: New test.
7549
7550 2021-01-14  Jonathan Wakely  <jwakely@redhat.com>
7551
7552         PR libstdc++/98471
7553         * include/bits/fs_path.h (__throw_conversion_error): New
7554         function to throw or abort on character conversion errors.
7555         (__wstr_from_utf8): Move definition after filesystem_error has
7556         been defined. Use __throw_conversion_error.
7557         (path::_S_convert<_EcharT>): Use __throw_conversion_error.
7558         (path::_S_str_convert<_CharT, _Traits, _Allocator>): Likewise.
7559         (path::u8string): Likewise.
7560
7561 2021-01-14  Jonathan Wakely  <jwakely@redhat.com>
7562
7563         * include/std/barrier: Update copyright years. Fix whitespace.
7564         * include/std/version: Fix whitespace.
7565         * testsuite/30_threads/barrier/1.cc: Update copyright years.
7566         * testsuite/30_threads/barrier/2.cc: Likewise.
7567         * testsuite/30_threads/barrier/arrive.cc: Likewise.
7568         * testsuite/30_threads/barrier/arrive_and_drop.cc: Likewise.
7569         * testsuite/30_threads/barrier/arrive_and_wait.cc: Likewise.
7570         * testsuite/30_threads/barrier/completion.cc: Likewise.
7571
7572 2021-01-13  Jonathan Wakely  <jwakely@redhat.com>
7573
7574         * doc/doxygen/user.cfg.in (INPUT): Remove include/debug/array.
7575
7576 2021-01-10  David Edelsohn  <dje.gcc@gmail.com>
7577
7578         PR libstdc++/98613
7579         * testsuite/ext/vstring/cons/moveable.cc: Suppress false positive
7580         warning.
7581         * testsuite/ext/vstring/modifiers/assign/move_assign.cc: Same.
7582
7583 2021-01-08  Olivier Hainque  <hainque@adacore.com>
7584
7585         * testsuite/20_util/bind/ref_neg.cc: Tweak the
7586         dg-prune-output regex for out-of-build-tree contexts.
7587
7588 2021-01-07  Thomas Rodgers  <trodgers@redhat.com>
7589
7590         * doc/doxygen/user.cfg.in: Add new header.
7591         * include/Makefile.am (std_headers): likewise.
7592         * include/Makefile.in: Regenerate.
7593         * include/precompiled/stdc++.h: Add new header.
7594         * include/std/barrier: New file.
7595         * include/std/version: Add __cpp_lib_barrier feature test macro.
7596         * testsuite/30_threads/barrier/1.cc: New test.
7597         * testsuite/30_threads/barrier/2.cc: Likewise.
7598         * testsuite/30_threads/barrier/arrive_and_drop.cc: Likewise.
7599         * testsuite/30_threads/barrier/arrive_and_wait.cc: Likewise.
7600         * testsuite/30_threads/barrier/arrive.cc: Likewise.
7601         * testsuite/30_threads/barrier/completion.cc: Likewise.
7602
7603 2021-01-07  Patrick Palka  <ppalka@redhat.com>
7604
7605         PR libstdc++/98384
7606         * testsuite/20_util/to_chars/long_double.cc: Use nexttowardl
7607         instead of the non-standard nextupl and nextdownl.
7608
7609 2021-01-05  Samuel Thibault  <samuel.thibault@ens-lyon.org>
7610
7611         * configure: Re-generate.
7612
7613 2021-01-05  Ed Smith-Rowland  <3dw4rd@verizon.net>
7614
7615         * include/precompiled/stdc++.h: Add <source_location> to C++20 section.
7616
7617 2021-01-01  Jakub Jelinek  <jakub@redhat.com>
7618
7619         * ChangeLog-2020: Rotate ChangeLog.  New file.
7620
7621 \f
7622 Copyright (C) 2021 Free Software Foundation, Inc.
7623
7624 Copying and distribution of this file, with or without modification,
7625 are permitted in any medium without royalty provided the copyright
7626 notice and this notice are preserved.