libstdc++-v3/ChangeLog

   1 2024-08-22  Patrick Palka  <ppalka@redhat.com>
   2
   3         * testsuite/25_algorithms/contains/1.cc: Verify value of
   4         __cpp_lib_ranges_contains.
   5         * testsuite/25_algorithms/find_last/1.cc: Verify value of
   6         __cpp_lib_ranges_find_last.
   7         * testsuite/26_numerics/iota/2.cc: Verify value of
   8         __cpp_lib_ranges_iota.
   9
  10 2024-08-22  Patrick Palka  <ppalka@redhat.com>
  11
  12         * include/bits/iterator_concepts.h (__detail::__projected): Define
  13         an optimized partial specialization for when the projection is
  14         std::identity.
  15         * testsuite/24_iterators/indirect_callable/projected.cc: Verify the
  16         optimization.
  17
  18 2024-08-22  Patrick Palka  <ppalka@redhat.com>
  19
  20         * include/bits/iterator_concepts.h (indirectly_unary_invocable):
  21         Relax as per P2997R1.
  22         (indirectly_regular_unary_invocable): Likewise.
  23         (indirect_unary_predicate): Likewise.
  24         (indirect_binary_predicate): Likewise.
  25         (indirect_equivalence_relation): Likewise.
  26         (indirect_strict_weak_order): Likewise.
  27         * include/bits/version.def (ranges): Update value for C++26.
  28         * include/bits/version.h: Regenerate.
  29         * testsuite/24_iterators/indirect_callable/p2997r1.cc: New test.
  30         * testsuite/std/ranges/version_c++23.cc: Remove.
  31         * testsuite/std/ranges/headers/ranges/synopsis.cc: Refine the
  32         __cpp_lib_ranges checks.
  33
  34 2024-08-22  Patrick Palka  <ppalka@redhat.com>
  35
  36         * include/bits/iterator_concepts.h (__detail::__indirect_value):
  37         Define.
  38         (__indirect_value_t): Define as per P2609R3.
  39         (iter_common_reference_t): Adjust as per P2609R3.
  40         (indirectly_unary_invocable): Likewise.
  41         (indirectly_regular_unary_invocable): Likewise.
  42         (indirect_unary_predicate): Likewise.
  43         (indirect_binary_predicate): Likewise.
  44         (indirect_equivalence_relation): Likewise.
  45         (indirect_strict_weak_order): Likewise.
  46         (__detail::__projected::__type): Define member aliases
  47         __projected_Iter and __projected_Proj providing the
  48         template arguments of the current specialization.
  49         * include/bits/version.def (ranges): Update value.
  50         * include/bits/version.h: Regenerate.
  51         * testsuite/24_iterators/indirect_callable/p2609r3.cc: New test.
  52         * testsuite/std/ranges/version_c++23.cc: Update expected value
  53         of __cpp_lib_ranges macro.
  54
  55 2024-08-21  Jonathan Wakely  <jwakely@redhat.com>
  56
  57         PR tree-optimization/102958
  58         * include/bits/char_traits.h (char_traits<char8_t>::length): Use
  59         strlen.
  60
  61 2024-08-21  Jonathan Wakely  <jwakely@redhat.com>
  62
  63         PR libstdc++/114862
  64         * src/c++98/locale_facets.cc (__num_base::_S_format_float):
  65         Check uppercase flag for fixed format.
  66         * testsuite/22_locale/num_put/put/char/lwg4084.cc: New test.
  67
  68 2024-08-21  Jonathan Wakely  <jwakely@redhat.com>
  69
  70         PR libstdc++/116381
  71         * include/std/variant (variant): Fix conditions for
  72         static_assert to match the spec.
  73         * testsuite/20_util/variant/types_neg.cc: New test.
  74
  75 2024-08-20  Jonathan Wakely  <jwakely@redhat.com>
  76
  77         * include/std/optional: Remove redundant redeclaration.
  78
  79 2024-08-20  Jonathan Wakely  <jwakely@redhat.com>
  80
  81         * include/std/text_encoding: Fix indentation.
  82
  83 2024-08-20  Jonathan Wakely  <jwakely@redhat.com>
  84
  85         PR libstdc++/115744
  86         * testsuite/18_support/headers/new/synopsis.cc [C++26]: Add
  87         constexpr to placement operator new and operator new[].
  88
  89 2024-08-18  Gerald Pfeifer  <gerald@pfeifer.com>
  90
  91         * doc/xml/manual/prerequisites.xml: Remove note from the
  92         GCC 4.0.1 days.
  93         * doc/html/manual/setup.html: Regenerate.
  94
  95 2024-08-17  Gerald Pfeifer  <gerald@pfeifer.com>
  96
  97         * doc/xml/manual/abi.xml: Update reference to
  98         gcc.gnu.org/onlinedocs.
  99         * doc/xml/manual/concurrency_extensions.xml (interface): Ditto.
 100         * doc/xml/manual/extensions.xml: Ditto.
 101         * doc/xml/manual/parallel_mode.xml: Ditto.
 102         * doc/xml/manual/shared_ptr.xml: Ditto.
 103         * doc/xml/manual/using_exceptions.xml: Ditto. And change GNU GCC
 104         to GCC.
 105         * doc/html/manual/abi.html: Regenerate.
 106         * doc/html/manual/ext_concurrency_impl.html: Ditto.
 107         * doc/html/manual/ext_demangling.html: Ditto.
 108         * doc/html/manual/memory.html: Ditto.
 109         * doc/html/manual/parallel_mode_design.html: Ditto.
 110         * doc/html/manual/parallel_mode_using.html: Ditto.
 111         * doc/html/manual/using_exceptions.html: Ditto.
 112
 113 2024-08-17  Gerald Pfeifer  <gerald@pfeifer.com>
 114
 115         * doc/xml/manual/prerequisites.xml: Tweak two links to
 116         installation docs. Fix grammar.
 117         * doc/html/manual/setup.html: Regenerate.
 118
 119 2024-08-16  Hans-Peter Nilsson  <hp@axis.com>
 120
 121         PR libstdc++/116362
 122         * configure.ac: Check newlib configuration whether iconv is enabled.
 123         * configure: Regenerate.
 124
 125 2024-08-16  Hans-Peter Nilsson  <hp@axis.com>
 126
 127         * testsuite/lib/prune.exp (libstdc++-dg-prune): Prune
 128         uncapitalized "in function" warning from linker.
 129
 130 2024-08-08  Jakub Jelinek  <jakub@redhat.com>
 131
 132         PR c++/115744
 133         * libsupc++/new (__glibcxx_want_constexpr_new): Define before
 134         including bits/version.h.
 135         (_GLIBCXX_PLACEMENT_CONSTEXPR): Define.
 136         (operator new, operator new[]): Use it for placement new instead
 137         of inline.
 138         * include/bits/version.def (constexpr_new): New FTM.
 139         * include/bits/version.h: Regenerate.
 140
 141 2024-08-06  Jonathan Wakely  <jwakely@redhat.com>
 142
 143         PR libstdc++/116247
 144         * include/bits/fs_path.h: Use __UINTPTR_TYPE__ instead of
 145         uintptr_t.
 146         * include/bits/shared_ptr_atomic.h: Likewise.
 147         * include/ext/pointer.h: Include <stdint.h>.
 148
 149 2024-08-03  Patrick Palka  <ppalka@redhat.com>
 150
 151         * include/bits/move.h (__like_impl): New metafunction.
 152         (__like_t): Redefine in terms of __like_impl.
 153         (forward_like): Redefine in terms of __like_t.
 154         * testsuite/20_util/forward_like/2_neg.cc: Don't expect
 155         error outside the immediate context anymore.
 156
 157 2024-08-02  Jonathan Wakely  <jwakely@redhat.com>
 158
 159         * testsuite/libstdc++-prettyprinters/shared_ptr.cc: Include
 160         <cstdint>.
 161
 162 2024-08-01  Jonathan Wakely  <jwakely@redhat.com>
 163
 164         * include/bits/utility.h (__is_in_place_type): Remove.
 165         * include/std/variant (__is_in_place_tag): Remove.
 166
 167 2024-08-01  Jonathan Wakely  <jwakely@redhat.com>
 168
 169         * include/bits/align.h (align, assume_aligned): Use
 170         __UINTPTR_TYPE__ instead of uintptr_t. Do not include
 171         <stdint.h>.
 172         * include/bits/atomic_base.h (__atomic_ref): Likewise.
 173         * include/bits/atomic_wait.h (__waiter_pool_base::_S_for):
 174         Likewise.
 175         * include/std/atomic: Include <cstdint>.
 176
 177 2024-08-01  Jonathan Wakely  <jwakely@redhat.com>
 178
 179         * include/bits/atomic_base.h (__atomic_impl::compare_exchange_weak):
 180         Remove unused parameter.
 181         (__atomic_impl::compare_exchange_strong): Likewise.
 182
 183 2024-08-01  Jonathan Wakely  <jwakely@redhat.com>
 184
 185         PR libstdc++/113807
 186         * include/std/bitset (bitset::_M_is_equal()): Use memcmp to
 187         optimize operator==.
 188
 189 2024-08-01  Jonathan Wakely  <jwakely@redhat.com>
 190
 191         * testsuite/26_numerics/random/discrete_distribution/operators/values.cc:
 192         Use ARGS to limit number of iterations for simulators.
 193
 194 2024-08-01  Jonathan Wakely  <jwakely@redhat.com>
 195
 196         PR libstdc++/113841
 197         * include/bits/basic_string.h (basic_string::basic_string()):
 198         Constrain so that it's only present if the allocator is default
 199         constructible.
 200         * include/bits/cow_string.h (basic_string::basic_string()):
 201         Likewise.
 202         * testsuite/21_strings/basic_string/cons/113841.cc: New test.
 203
 204 2024-08-01  Jonathan Wakely  <jwakely@redhat.com>
 205
 206         PR libstdc++/99942
 207         * include/bits/cow_string.h (data()): Change to noexcept(false).
 208
 209 2024-08-01  Jonathan Wakely  <jwakely@redhat.com>
 210
 211         * testsuite/23_containers/map/operators/1_neg.cc (test01): Remove test variable
 212         and use 'no match' dg-error patter.
 213         * testsuite/23_containers/set/operators/1_neg.cc (test01): Likewise.
 214
 215 2024-07-31  François Dumont  <frs.dumont@gmail.com>
 216
 217         * testsuite/23_containers/map/operators/1_neg.cc (test01): Add test variable
 218         declaration.
 219         * testsuite/23_containers/set/operators/1_neg.cc (test01): Likewise.
 220
 221 2024-07-31  Jonathan Wakely  <jwakely@redhat.com>
 222
 223         * src/c++20/format.cc [!_GLIBCXX_HAS_GTHREADS] (mutex): Define
 224         dummy mutex type.
 225         * testsuite/std/time/format_localized.cc: Use loop variable
 226         instead of creating the same locale on every iteration.
 227
 228 2024-07-31  Sam James  <sam@gentoo.org>
 229
 230         * testsuite/28_regex/traits/char/translate.cc: Drop bogus 'dg_do run'.
 231
 232 2024-07-31  Jonathan Wakely  <jwakely@redhat.com>
 233
 234         * src/c++11/system_error.cc (strerror_string): Handle
 235         non-conforming NULL return from strerror.
 236
 237 2024-07-31  Jonathan Wakely  <jwakely@redhat.com>
 238
 239         * testsuite/lib/libstdc++.exp (check_v3_target_namedlocale):
 240         Only append "@euro" to ".ISO8859-15" locales for Glibc.
 241
 242 2024-07-31  Jonathan Wakely  <jwakely@redhat.com>
 243
 244         * include/bits/version.def (format): Update value for C++26.
 245         * include/bits/version.h: Regenerate.
 246         * include/std/format (runtime_format, wruntime_format): Check
 247         __cpp_lib_format instead of __cplusplus.
 248         * testsuite/std/format/functions/format.cc: Update expected
 249         value of macro for C++26 mode.
 250
 251 2024-07-31  Jonathan Wakely  <jwakely@redhat.com>
 252
 253         PR libstdc++/110356
 254         * include/bits/c++config (_GLIBCXX26_DEPRECATED): Define.
 255         (_GLIBCXX26_DEPRECATED_SUGGEST): Define.
 256         * include/bits/version.def (format): Update for C++26.
 257         * include/bits/version.h: Regenerate.
 258         * include/std/format (basic_format_arg::visit): New member
 259         functions.
 260         (visit_format_arg): Add deprecated attribute.
 261         * testsuite/std/format/arguments/args.cc: Expect deprecated
 262         warnings. Check member visit.
 263         * testsuite/std/format/functions/format.cc: Update expected
 264         value for __cpp_lib_format macro.
 265         * testsuite/std/format/parse_ctx.cc: Add dg-warning for
 266         deprecation.
 267
 268 2024-07-31  Jonathan Wakely  <jwakely@redhat.com>
 269
 270         PR libstdc++/110356
 271         * include/bits/version.def (variant): Update for C++26.
 272         * include/bits/version.h: Regenerate.
 273         * include/std/variant (variant::visit): New member functions.
 274         * testsuite/20_util/variant/visit.cc: Check second alternative.
 275         * testsuite/20_util/variant/visit_member.cc: New test.
 276
 277 2024-07-31  Jonathan Wakely  <jwakely@redhat.com>
 278
 279         PR libstdc++/115776
 280         * include/bits/version.def (format): Update for C++26.
 281         * include/bits/version.h: Regenerate.
 282         * include/std/format (basic_format_parse_context): Remove
 283         default argument from constructor and split into two
 284         constructors. Make the constructor taking size_t private for
 285         C++26 and later.
 286         (basic_format_parse_context::check_dynamic_spec): New member
 287         function template.
 288         (basic_format_parse_context::check_dynamic_spec_integral): New
 289         member function.
 290         (basic_format_parse_context::check_dynamic_spec_string):
 291         Likewise.
 292         (__format::_Spec::_S_parse_width_or_precision): Use
 293         check_dynamic_spec_integral.
 294         (__format::__to_arg_t_enum): New helper function.
 295         (basic_format_arg):  Declare __to_arg_t_enum as friend.
 296         (__format::_Scanner): Define and use a derived parse context
 297         type.
 298         (__format::_Checking_scanner): Make arg types available to parse
 299         context.
 300         * testsuite/std/format/functions/format.cc: Check for new values
 301         of __cpp_lib_format macro.
 302         * testsuite/std/format/parse_ctx.cc: Check all members of
 303         basic_format_parse_context.
 304         * testsuite/std/format/parse_ctx_neg.cc: New test.
 305         * testsuite/std/format/string.cc: Add more checks for dynamic
 306         width and precision args.
 307
 308 2024-07-31  Jonathan Wakely  <jwakely@redhat.com>
 309
 310         * include/bits/version.def (format): Update value for P2510R3.
 311         * include/bits/version.h: Regenerate.
 312         * include/std/format (_GLIBCXX_P2518R3): Remove misspelled macro
 313         and check __glibcxx_format instead.
 314         * testsuite/std/format/functions/format.cc: Check value of the
 315         __cpp_lib_format macro for formatting pointers support.
 316         * testsuite/std/format/parse_ctx.cc: Likewise.
 317
 318 2024-07-31  Jonathan Wakely  <jwakely@redhat.com>
 319
 320         PR libstdc++/109162
 321         * acinclude.m4 (libtool_VERSION): Update to 6:34:0.
 322         * config/abi/pre/gnu.ver: Disambiguate old patters. Add new
 323         GLIBCXX_3.4.34 symbol version and new exports.
 324         * configure: Regenerate.
 325         * include/bits/chrono_io.h (_ChronoSpec::_M_locale_specific):
 326         Add new accessor functions to use a reserved bit in _Spec.
 327         (__formatter_chrono::_M_parse): Use _M_locale_specific(true)
 328         when chrono-specs contains locale-dependent conversion
 329         specifiers.
 330         (__formatter_chrono::_M_format): Open iconv descriptor if
 331         conversion to UTF-8 will be needed.
 332         (__formatter_chrono::_M_write): New function to write a
 333         localized string with possible character conversion.
 334         (__formatter_chrono::_M_a_A, __formatter_chrono::_M_b_B)
 335         (__formatter_chrono::_M_p, __formatter_chrono::_M_r)
 336         (__formatter_chrono::_M_x, __formatter_chrono::_M_X)
 337         (__formatter_chrono::_M_locale_fmt): Use _M_write.
 338         * include/bits/version.def (format): Update value.
 339         * include/bits/version.h: Regenerate.
 340         * include/std/format (_GLIBCXX_P2518R3): Check feature test
 341         macro instead of __cplusplus.
 342         (basic_format_context): Declare __formatter_chrono as friend.
 343         * src/c++20/Makefile.am: Add new file.
 344         * src/c++20/Makefile.in: Regenerate.
 345         * src/c++20/format.cc: New file.
 346         * testsuite/std/time/format_localized.cc: New test.
 347         * testsuite/util/testsuite_abi.cc: Add new symbol version.
 348
 349 2024-07-30  Jonathan Wakely  <jwakely@redhat.com>
 350
 351         * include/bits/chrono_io.h (__local_time_fmt_for): New alias
 352         template.
 353         (formatter<zoned_time<D, P>>): Use __local_time_fmt_for.
 354         * testsuite/std/time/zoned_time/io.cc: Check zoned_time<minutes>
 355         can be formatted.
 356
 357 2024-07-30  Jonathan Wakely  <jwakely@redhat.com>
 358
 359         * include/bits/chrono_io.h (__local_fmt_t): Remove unused
 360         declaration.
 361         (__formatter_chrono::_M_format_to_ostream): Add explicit
 362         handling for specializations of __local_time_fmt, including the
 363         time zone abbreviation in the output if __is_neg is true.
 364         (formatter<chrono::tai_time<D>>::format): Add comment.
 365         (formatter<chrono::gps_time<D>>::format): Likewise.
 366         (formatter<chrono::__detail::__local_time_fmt::format): Call
 367         _M_format with true for the __is_neg flag.
 368         * testsuite/std/time/clock/gps/io.cc: Remove unused variable.
 369         * testsuite/std/time/clock/local/io.cc: Fix test error that
 370         checked tai_time instead of local_time. Add tests for
 371         local-time-format-t formatting.
 372         * testsuite/std/time/clock/system/io.cc: Check empty
 373         chrono-specs.
 374         * testsuite/std/time/clock/tai/io.cc: Likewise.
 375         * testsuite/std/time/zoned_time/io.cc: Likewise.
 376
 377 2024-07-30  Jonathan Wakely  <jwakely@redhat.com>
 378
 379         * include/std/expected (expected(U&&), operator=(U&&))
 380         (value_or): Use remove_cv_t on default template argument, as per
 381         LWG 3886.
 382         * include/std/optional (optional(U&&), operator=(U&&))
 383         (value_or): Likewise.
 384         * testsuite/20_util/expected/lwg3886.cc: New test.
 385         * testsuite/20_util/optional/cons/lwg3886.cc: New test.
 386
 387 2024-07-30  Jonathan Wakely  <jwakely@redhat.com>
 388
 389         * src/c++17/fs_ops.cc: Fix file name in comment.
 390
 391 2024-07-30  Jonathan Wakely  <jwakely@redhat.com>
 392
 393         * src/c++17/fs_ops.cc (auto_win_file_handle): Change constructor
 394         parameter from const path& to const wchar_t*.
 395         (fs::equiv_files): New function.
 396         (fs::equivalent): Use equiv_files.
 397         * src/filesystem/ops-common.h (fs::equiv_files): Declare.
 398         (do_copy_file): Use equiv_files.
 399         * src/filesystem/ops.cc (fs::equiv_files): Define.
 400         (fs::copy, fs::equivalent): Use equiv_files.
 401         * testsuite/27_io/filesystem/operations/copy.cc: Test
 402         overwriting directory contents recursively.
 403         * testsuite/27_io/filesystem/operations/copy_file.cc: Test
 404         overwriting existing files.
 405
 406 2024-07-30  Lennox Shou Hao Ho  <lennoxhoe@gmail.com>
 407
 408         PR libstdc++/113663
 409         * src/c++17/fs_ops.cc (fs::equivalent): Moved helper class
 410         auto_handle to anonymous namespace as auto_win_file_handle.
 411         (fs::hard_link_count): Changed Windows implementation to use
 412         information provided by GetFileInformationByHandle which is more
 413         reliable.
 414         * testsuite/27_io/filesystem/operations/hard_link_count.cc: New
 415         test.
 416
 417 2024-07-29  Thomas Schwinge  <tschwinge@baylibre.com>
 418
 419         * testsuite/lib/libstdc++.exp (file-io-diff): Polish.
 420
 421 2024-07-28  Sam James  <sam@gentoo.org>
 422
 423         PR libstdc++/110572
 424         * testsuite/18_support/type_info/110572.cc: Fix dg-do directive order.
 425
 426 2024-07-27  Jonathan Wakely  <jwakely@redhat.com>
 427
 428         * include/std/charconv (__to_chars_16, __to_chars_10)
 429         (__to_chars_8, __to_chars_2, __to_chars): Cast ptrdiff_t to
 430         size_t for comparison.
 431         (__to_chars_i): Check for first >= last instead of first == last
 432         for initial sanity check.
 433
 434 2024-07-27  Jonathan Wakely  <jwakely@redhat.com>
 435
 436         * include/bits/std_function.h: Add comment about LWG 3617 being
 437         supported.
 438
 439 2024-07-27  Jonathan Wakely  <jwakely@redhat.com>
 440
 441         * include/bits/stl_algobase.h (__find_if): Remove overloads for
 442         dispatching on iterator_category. Do not unroll loop manually.
 443         * include/bits/stl_algo.h (__find_if_not): Remove
 444         iterator_category argument from __find_if call.
 445
 446 2024-07-25  Jonathan Wakely  <jwakely@redhat.com>
 447
 448         * include/std/expected (expected::value): Add assertions for LWG
 449         3843 requirements.
 450         (expected<cv void, E>::value): Add assertions for LWG 3940
 451         requirements.
 452
 453 2024-07-25  Jonathan Wakely  <jwakely@redhat.com>
 454
 455         * include/std/format (basic_format_args): Remove default
 456         constructor, as per LWG 4106.
 457         * testsuite/std/format/arguments/args.cc: Check it isn't default
 458         constructible.
 459
 460 2024-07-25  Jonathan Wakely  <jwakely@redhat.com>
 461
 462         * include/bits/utility.h (_Swallow_assign): Make assignment
 463         constexpr for C++11 as well, and add noexcept.
 464         * include/std/tuple (_Swallow_assign, ignore): Move to
 465         bits/utility.h.
 466         * testsuite/20_util/headers/utility/ignore.cc: New test.
 467
 468 2024-07-25  Jonathan Wakely  <jwakely@redhat.com>
 469
 470         * include/std/optional: Reorder parameters in comparison
 471         operators as per LWG 2945.
 472
 473 2024-07-25  Patrick Palka  <ppalka@redhat.com>
 474
 475         PR libstdc++/116038
 476         * include/std/functional (_Bind_front::operator()): Use __like_t
 477         instead of std::forward when forwarding __self.
 478         (_Bind_back::operator()): Likewise.
 479         * include/std/ranges (_Partial::operator()): Likewise.
 480         (_Pipe::operator()): Likewise.
 481         * testsuite/20_util/function_objects/bind_back/116038.cc: New test.
 482         * testsuite/20_util/function_objects/bind_front/116038.cc: New test.
 483         * testsuite/std/ranges/adaptors/116038.cc: New test.
 484
 485 2024-07-25  Jonathan Wakely  <jwakely@redhat.com>
 486
 487         * include/std/expected (bad_expected_access<void>): Add noexcept
 488         to special member functions, as per LWG 4031.
 489         * testsuite/20_util/expected/bad.cc: Check for nothrow copy and
 490         move members.
 491
 492 2024-07-25  Jonathan Wakely  <jwakely@redhat.com>
 493
 494         * include/std/optional (optional): Use C++20 features to
 495         simplify overload sets for constructors and assignment
 496         operators.
 497
 498 2024-07-25  Jonathan Wakely  <jwakely@redhat.com>
 499
 500         * include/std/optional (optional): Constrain constructors to
 501         prevent problematic bool conversions, as per LWG 3836.
 502         * testsuite/20_util/optional/cons/lwg3836.cc: New test.
 503
 504 2024-07-25  Jonathan Wakely  <jwakely@redhat.com>
 505
 506         * include/std/expected (expected): Constrain constructors to
 507         prevent problematic bool conversions, as per LWG 3836.
 508         * testsuite/20_util/expected/lwg3836.cc: New test.
 509
 510 2024-07-25  Jonathan Wakely  <jwakely@redhat.com>
 511
 512         * include/std/optional (_Optional_payload_base::_Storage)
 513         [C++20]: Define constrained non-trivial destructor.
 514         (_Optional_payload_base::_Storage<U, false>) [C++20]: Do not
 515         define partial specialization when primary template has
 516         constrained destructor.
 517         (_Optional_base) [C++20]: Define constrained trivial copy and
 518         move cons and move constructors. Define payload accessors here
 519         instead of inheriting them from _Optional_base_impl.
 520         (_Optional_base_impl, _Optional_base<T, false, true>)
 521         (_Optional_base<T, true, false>, _Optional_base<T, true, true>)
 522         [C++20]: Do not define.
 523
 524 2024-07-25  Jonathan Wakely  <jwakely@redhat.com>
 525
 526         * include/std/optional (optional): Add using-declaraction for
 527         _Base::_M_get and declare optional<U> as friend.
 528         (optional(const optional<U>&)): Use
 529         _M_get instead of operator*.
 530         (optional(optional<U>&&)): Likewise.
 531         (operator=(const optional<U>&)): Likewise.
 532         (operator=(optional<U>&&)): Likewise.
 533         (and_then, tansform): Likewise.
 534
 535 2024-07-25  Jonathan Wakely  <jwakely@redhat.com>
 536
 537         * include/std/optional (_Optional_base_impl::_M_get()): Move
 538         assertions to ...
 539         (optional::operator->, optional::operator*): ... here.
 540
 541 2024-07-25  Andrew Pinski  <quic_apinski@quicinc.com>
 542
 543         * testsuite/lib/libstdc++.exp (v3_target_compile): Call
 544         string trim on v3_target_compile before calling split.
 545
 546 2024-07-24  Jonathan Wakely  <jwakely@redhat.com>
 547
 548         PR libstdc++/116070
 549         * include/std/istream: Check feature test macro before using
 550         is_class_v and is_same_v.
 551         * include/std/ostream: Likewise.
 552
 553 2024-07-24  Jonathan Wakely  <jwakely@redhat.com>
 554
 555         PR libstdc++/116070
 556         * include/bits/stl_bvector.h: Check feature test macro before
 557         using is_default_constructible_v.
 558
 559 2024-07-24  Michael Levine  <mlevine55@bloomberg.net>
 560
 561         * include/bits/ranges_algobase.h: Remove duplicate include of
 562         <bits/stl_algobase.h>.
 563
 564 2024-07-24  Jonathan Wakely  <jwakely@redhat.com>
 565
 566         PR libstdc++/12048
 567         * testsuite/ext/stdio_sync_filebuf/wchar_t/12948-1.cc: Move to...
 568         * testsuite/ext/stdio_sync_filebuf/wchar_t/12048-1.cc: ...here.
 569         * testsuite/ext/stdio_sync_filebuf/wchar_t/12948-2.cc: Move to...
 570         * testsuite/ext/stdio_sync_filebuf/wchar_t/12048-2.cc: ...here.
 571         * testsuite/ext/stdio_sync_filebuf/wchar_t/12948-3.cc: Move to...
 572         * testsuite/ext/stdio_sync_filebuf/wchar_t/12048-3.cc: ...here.
 573         * testsuite/ext/stdio_sync_filebuf/wchar_t/12948-4.cc: Move to...
 574         * testsuite/ext/stdio_sync_filebuf/wchar_t/12048-4.cc: ...here.
 575
 576 2024-07-24  Jonathan Wakely  <jwakely@redhat.com>
 577
 578         * testsuite/lib/libstdc++.exp (libstdc++_init): Do not copy all
 579         data files into test directory.
 580
 581 2024-07-24  Jonathan Wakely  <jwakely@redhat.com>
 582
 583         * testsuite/20_util/hash/chi2_q_document_words.cc: Use
 584         dg-additional-files for input text.
 585         * testsuite/performance/ext/pb_ds/all_text_find.cc: Likewise.
 586         * testsuite/performance/ext/pb_ds/multimap_text_find.hpp:
 587         Likewise.
 588         * testsuite/performance/ext/pb_ds/multimap_text_insert.hpp:
 589         Likewise.
 590         * testsuite/performance/ext/pb_ds/multimap_text_insert_mem.hpp:
 591         Likewise.
 592         * testsuite/performance/ext/pb_ds/priority_queue_text_join.cc:
 593         Likewise.
 594         * testsuite/performance/ext/pb_ds/priority_queue_text_modify.hpp: Likewise.
 595         * testsuite/performance/ext/pb_ds/priority_queue_text_pop_mem.cc: Likewise.
 596         * testsuite/performance/ext/pb_ds/priority_queue_text_push.cc:
 597         Likewise.
 598         * testsuite/performance/ext/pb_ds/priority_queue_text_push_pop.cc: Likewise.
 599         * testsuite/performance/ext/pb_ds/tree_text_insert.cc: Likewise.
 600         * testsuite/performance/ext/pb_ds/tree_text_lor_find.cc:
 601         Likewise.
 602
 603 2024-07-24  Jonathan Wakely  <jwakely@redhat.com>
 604
 605         * testsuite/25_algorithms/advance/istreambuf_iterators/char/2.cc:
 606         Use dg-additional-files.
 607         * testsuite/25_algorithms/advance/istreambuf_iterators/wchar_t/2.cc:
 608         Likewise.
 609         * testsuite/25_algorithms/copy/streambuf_iterators/char/4.cc:
 610         Likewise.
 611         * testsuite/25_algorithms/copy/streambuf_iterators/wchar_t/4.cc:
 612         Likewise.
 613         * testsuite/25_algorithms/copy_n/istreambuf_iterator/2.cc:
 614         Likewise.
 615         * testsuite/25_algorithms/copy_n/istreambuf_iterator/deque.cc:
 616         Likewise.
 617         * testsuite/25_algorithms/find/istreambuf_iterators/char/2.cc:
 618         Likewise.
 619         * testsuite/25_algorithms/find/istreambuf_iterators/wchar_t/2.cc:
 620         Likewise.
 621
 622 2024-07-24  Jonathan Wakely  <jwakely@redhat.com>
 623
 624         * testsuite/27_io/basic_filebuf/close/char/1.cc: Remove
 625         @require@ and @diff@. Use dg-final file-io-diff action.
 626         * testsuite/27_io/basic_istream/extractors_other/char/2.cc:
 627         Likewise.
 628         * testsuite/27_io/basic_istream/extractors_other/wchar_t/2.cc:
 629         Likewise.
 630         * testsuite/27_io/basic_istream/get/char/2.cc: Likewise.
 631         * testsuite/27_io/basic_istream/get/wchar_t/2.cc: Likewise.
 632         * testsuite/27_io/basic_istream/ignore/char/3.cc: Likewise.
 633         * testsuite/27_io/basic_istream/ignore/wchar_t/3.cc: Likewise.
 634         * testsuite/27_io/basic_istream/peek/char/6414.cc: Likewise.
 635         * testsuite/27_io/basic_istream/peek/wchar_t/6414.cc: Likewise.
 636         * testsuite/27_io/basic_istream/seekg/char/fstream.cc: Likewise.
 637         * testsuite/27_io/basic_istream/seekg/wchar_t/fstream.cc:
 638         Likewise.
 639         * testsuite/27_io/basic_istream/tellg/char/fstream.cc: Likewise.
 640         * testsuite/27_io/basic_istream/tellg/wchar_t/fstream.cc:
 641         Likewise.
 642         * testsuite/27_io/basic_ofstream/open/char/1.cc: Likewise.
 643         * testsuite/27_io/basic_ostream/inserters_other/char/1.cc:
 644         Likewise.
 645         * testsuite/27_io/basic_ostream/inserters_other/wchar_t/1.cc:
 646         Likewise.
 647         * testsuite/27_io/ios_base/sync_with_stdio/1.cc: Likewise.
 648         * testsuite/27_io/basic_ostream/inserters_other/char/2.cc:
 649         Likewise. Check file positions.
 650         * testsuite/27_io/basic_ostream/inserters_other/wchar_t/2.cc:
 651         Likewise.
 652         * testsuite/lib/libstdc++.exp (file-io-diff): New proc.
 653
 654 2024-07-24  Jonathan Wakely  <jwakely@redhat.com>
 655
 656         * testsuite/27_io/basic_filebuf/imbue/char/2.cc: Use
 657         dg-additional-files.
 658         * testsuite/27_io/basic_filebuf/imbue/wchar_t/2.cc: Likewise.
 659         * testsuite/27_io/basic_filebuf/open/char/path.cc: Likewise.
 660         * testsuite/27_io/basic_filebuf/pbackfail/char/9761.cc:
 661         Likewise.
 662         * testsuite/27_io/basic_filebuf/seekoff/char/3-in.cc: Likewise.
 663         * testsuite/27_io/basic_filebuf/seekoff/char/3-io.cc: Likewise.
 664         * testsuite/27_io/basic_filebuf/seekpos/char/3-in.cc: Likewise.
 665         * testsuite/27_io/basic_filebuf/seekpos/char/3-io.cc: Likewise.
 666         * testsuite/27_io/basic_filebuf/setbuf/char/1.cc: Likewise.
 667         * testsuite/27_io/basic_filebuf/sgetn/char/3.cc: Likewise.
 668         * testsuite/27_io/basic_filebuf/underflow/10096.cc: Likewise.
 669         * testsuite/27_io/basic_fstream/cons/char/path.cc: Likewise.
 670         * testsuite/27_io/basic_fstream/open/char/path.cc: Likewise.
 671         * testsuite/27_io/basic_ifstream/assign/1.cc: Likewise.
 672         * testsuite/27_io/basic_ifstream/cons/move.cc: Likewise.
 673         * testsuite/27_io/basic_ifstream/cons/char/path.cc: Likewise.
 674         * testsuite/27_io/basic_ifstream/open/char/path.cc: Likewise.
 675         * testsuite/27_io/basic_ifstream/open/wchar_t/1.cc: Likewise.
 676         * testsuite/27_io/objects/char/10.cc: Likewise.
 677         * testsuite/27_io/objects/char/12048-1.cc: Likewise.
 678         * testsuite/27_io/objects/char/12048-2.cc: Likewise.
 679         * testsuite/27_io/objects/char/12048-3.cc: Likewise.
 680         * testsuite/27_io/objects/char/12048-4.cc: Likewise.
 681         * testsuite/27_io/objects/char/12048-5.cc: Likewise.
 682         * testsuite/27_io/objects/wchar_t/12048-1.cc: Likewise.
 683         * testsuite/27_io/objects/wchar_t/12048-2.cc: Likewise.
 684         * testsuite/27_io/objects/wchar_t/12048-3.cc: Likewise.
 685         * testsuite/27_io/objects/wchar_t/12048-4.cc: Likewise.
 686         * testsuite/27_io/objects/wchar_t/12048-5.cc: Likewise.
 687         * testsuite/ext/stdio_sync_filebuf/char/12048-1.cc: Likewise.
 688         * testsuite/ext/stdio_sync_filebuf/char/12048-2.cc: Likewise.
 689         * testsuite/ext/stdio_sync_filebuf/char/12048-3.cc: Likewise.
 690         * testsuite/ext/stdio_sync_filebuf/char/12048-4.cc: Likewise.
 691         * testsuite/ext/stdio_sync_filebuf/wchar_t/12948-1.cc: Likewise.
 692         * testsuite/ext/stdio_sync_filebuf/wchar_t/12948-2.cc: Likewise.
 693         * testsuite/ext/stdio_sync_filebuf/wchar_t/12948-3.cc: Likewise.
 694         * testsuite/ext/stdio_sync_filebuf/wchar_t/12948-4.cc: Likewise.
 695
 696 2024-07-24  Jonathan Wakely  <jwakely@redhat.com>
 697
 698         * testsuite/27_io/basic_filebuf/close/char/2.cc: Remove
 699         @require@ and @diff@ markup. Use dg-additional-files. Remove
 700         unused variable.
 701         * testsuite/27_io/basic_filebuf/close/char/3.cc: Remove
 702         @require@ and @diff@ markup. Use dg-additional-files.
 703         * testsuite/27_io/basic_filebuf/close/char/4.cc: Likewise.
 704         * testsuite/27_io/basic_filebuf/close/char/5.cc: Likewise.
 705         * testsuite/27_io/basic_filebuf/in_avail/char/1.cc: Likewise.
 706         * testsuite/27_io/basic_filebuf/is_open/char/1.cc: Likewise.
 707         * testsuite/27_io/basic_filebuf/open/char/1.cc: Likewise.
 708         * testsuite/27_io/basic_filebuf/open/char/2.cc: Likewise.
 709         * testsuite/27_io/basic_filebuf/sbumpc/char/1-in.cc: Likewise.
 710         * testsuite/27_io/basic_filebuf/sbumpc/char/1-io.cc: Likewise.
 711         * testsuite/27_io/basic_filebuf/sbumpc/char/2-in.cc: Likewise.
 712         * testsuite/27_io/basic_filebuf/sbumpc/char/2-io.cc: Likewise.
 713         * testsuite/27_io/basic_filebuf/seekoff/char/1-in.cc: Likewise.
 714         * testsuite/27_io/basic_filebuf/seekoff/char/1-out.cc: Likewise.
 715         * testsuite/27_io/basic_filebuf/seekoff/char/2-in.cc: Likewise.
 716         * testsuite/27_io/basic_filebuf/seekoff/char/2-out.cc: Likewise.
 717         * testsuite/27_io/basic_filebuf/seekpos/char/1-in.cc: Likewise.
 718         * testsuite/27_io/basic_filebuf/seekpos/char/1-out.cc: Likewise.
 719         * testsuite/27_io/basic_filebuf/seekpos/char/2-in.cc: Likewise.
 720         * testsuite/27_io/basic_filebuf/seekpos/char/2-out.cc: Likewise.
 721         * testsuite/27_io/basic_filebuf/sgetc/char/1-in.cc: Likewise.
 722         * testsuite/27_io/basic_filebuf/sgetc/char/1-io.cc: Likewise.
 723         * testsuite/27_io/basic_filebuf/sgetc/char/2-in.cc: Likewise.
 724         * testsuite/27_io/basic_filebuf/sgetc/char/2-io.cc: Likewise.
 725         * testsuite/27_io/basic_filebuf/sgetn/char/1-in.cc: Likewise.
 726         * testsuite/27_io/basic_filebuf/sgetn/char/1-io.cc: Likewise.
 727         * testsuite/27_io/basic_filebuf/sgetn/char/2-in.cc: Likewise.
 728         * testsuite/27_io/basic_filebuf/sgetn/char/2-io.cc: Likewise.
 729         * testsuite/27_io/basic_filebuf/snextc/char/1-in.cc: Likewise.
 730         * testsuite/27_io/basic_filebuf/snextc/char/1-io.cc: Likewise.
 731         * testsuite/27_io/basic_filebuf/snextc/char/1-out.cc: Likewise.
 732         * testsuite/27_io/basic_filebuf/snextc/char/2-in.cc: Likewise.
 733         * testsuite/27_io/basic_filebuf/snextc/char/2-io.cc: Likewise.
 734         * testsuite/27_io/basic_filebuf/sputbackc/char/1-in.cc:
 735         Likewise.
 736         * testsuite/27_io/basic_filebuf/sputbackc/char/2-in.cc:
 737         Likewise.
 738         * testsuite/27_io/basic_filebuf/sputc/char/1-in.cc: Likewise.
 739         * testsuite/27_io/basic_filebuf/sputc/char/2-in.cc: Likewise.
 740         * testsuite/27_io/basic_filebuf/sputc/char/2-io.cc: Likewise.
 741         * testsuite/27_io/basic_filebuf/sputn/char/1-in.cc: Likewise.
 742         * testsuite/27_io/basic_filebuf/sputn/char/1-io.cc: Likewise.
 743         Remove unused variable.
 744         * testsuite/27_io/basic_filebuf/sputn/char/2-in.cc: Remove
 745         @require@ and @diff@ markup. Use dg-additional-files.
 746         * testsuite/27_io/basic_filebuf/sungetc/char/1-in.cc: Likewise.
 747         * testsuite/27_io/basic_filebuf/sungetc/char/2-in.cc: Likewise.
 748         * testsuite/27_io/basic_ifstream/cons/char/1.cc: Likewise.
 749         * testsuite/27_io/basic_ifstream/open/char/1.cc: Likewise.
 750         * testsuite/27_io/basic_ifstream/rdbuf/char/2832.cc: Likewise.
 751         * testsuite/27_io/basic_istream/readsome/char/6746-2.cc:
 752         Likewise.
 753         * testsuite/27_io/basic_istream/readsome/wchar_t/6746-2.cc:
 754         Likewise.
 755         * testsuite/27_io/basic_istream/seekg/char/sstream.cc: Likewise.
 756         * testsuite/27_io/basic_istream/seekg/wchar_t/sstream.cc:
 757         Likewise.
 758         * testsuite/27_io/basic_istream/tellg/char/1.cc: Likewise.
 759         * testsuite/27_io/basic_istream/tellg/char/sstream.cc: Likewise.
 760         * testsuite/27_io/basic_istream/tellg/wchar_t/1.cc: Likewise.
 761         * testsuite/27_io/basic_istream/tellg/wchar_t/sstream.cc:
 762         Likewise.
 763         * testsuite/27_io/basic_ofstream/open/char/1.cc: Likewise.
 764         * testsuite/lib/dg-options.exp (dg-additional-files): Append to
 765         v3_additional_files instead of replacing.
 766         * testsuite/lib/libstdc++.exp (v3_target_compile): Reset
 767         v3_additional_files after copying files.
 768
 769 2024-07-24  Jonathan Wakely  <jwakely@redhat.com>
 770
 771         * testsuite/27_io/basic_filebuf/close/char/4879.cc: Remove
 772         @require@ and @diff@ comments.
 773         * testsuite/27_io/basic_filebuf/close/char/9964.cc: Likewise.
 774         * testsuite/27_io/basic_filebuf/open/char/3.cc: Likewise.
 775         * testsuite/27_io/basic_filebuf/open/char/9507.cc: Likewise.
 776         * testsuite/27_io/basic_filebuf/sbumpc/char/1-out.cc: Likewise.
 777         * testsuite/27_io/basic_filebuf/sbumpc/char/2-out.cc: Likewise.
 778         * testsuite/27_io/basic_filebuf/sgetc/char/1-out.cc: Likewise.
 779         * testsuite/27_io/basic_filebuf/sgetc/char/2-out.cc: Likewise.
 780         * testsuite/27_io/basic_filebuf/sgetn/char/1-out.cc: Likewise.
 781         * testsuite/27_io/basic_filebuf/sgetn/char/2-out.cc: Likewise.
 782         * testsuite/27_io/basic_filebuf/snextc/char/2-out.cc: Likewise.
 783         * testsuite/27_io/basic_filebuf/sputbackc/char/1-io.cc:
 784         Likewise.
 785         * testsuite/27_io/basic_filebuf/sputbackc/char/1-out.cc:
 786         Likewise.
 787         * testsuite/27_io/basic_filebuf/sputbackc/char/2-io.cc:
 788         Likewise.
 789         * testsuite/27_io/basic_filebuf/sputbackc/char/2-out.cc:
 790         Likewise.
 791         * testsuite/27_io/basic_filebuf/sputc/char/1-out.cc: Likewise.
 792         * testsuite/27_io/basic_filebuf/sputc/char/2-out.cc: Likewise.
 793         * testsuite/27_io/basic_filebuf/sputn/char/1-out.cc: Likewise.
 794         * testsuite/27_io/basic_filebuf/sputn/char/2-out.cc: Likewise.
 795         * testsuite/27_io/basic_filebuf/sungetc/char/1-io.cc: Likewise.
 796         * testsuite/27_io/basic_filebuf/sungetc/char/1-out.cc: Likewise.
 797         * testsuite/27_io/basic_filebuf/sungetc/char/2-io.cc: Likewise.
 798         * testsuite/27_io/basic_filebuf/sungetc/char/2-out.cc: Likewise.
 799         * testsuite/27_io/basic_filebuf/sputc/char/1-io.cc: Likewise.
 800         Remove unused variable.
 801         * testsuite/27_io/basic_filebuf/sputn/char/2-io.cc: Likewise.
 802         * testsuite/27_io/basic_ofstream/cons/char/1.cc: Remove
 803         @require@ and @diff@ comments. Remove unused variables.
 804         * testsuite/27_io/basic_ofstream/rdbuf/char/2832.cc: Remove
 805         * testsuite/27_io/ios_base/sync_with_stdio/2.cc: Likewise.
 806
 807 2024-07-23  Jonathan Wakely  <jwakely@redhat.com>
 808
 809         * src/c++23/print.cc (__open_terminal): Use [[maybe_unused]] on
 810         parameter.
 811
 812 2024-07-23  Detlef Vollmann  <dv@vollmann.ch>
 813
 814         PR libstdc++/115482
 815         * src/c++23/print.cc (__open_terminal) [__AVR__]: Do not use
 816         isatty.
 817
 818 2024-07-18  Patrick Palka  <ppalka@redhat.com>
 819
 820         * include/experimental/socket
 821         (basic_socket_iostream::basic_socket_iostream): Fix typo.
 822         * include/tr2/dynamic_bitset
 823         (__dynamic_bitset_base::_M_is_proper_subset_of): Likewise.
 824
 825 2024-07-12  Alexandre Oliva  <oliva@adacore.com>
 826
 827         * testsuite/decimal/binary-arith.cc: Require dfprt.
 828         * testsuite/decimal/comparison.cc: Likewise.
 829         * testsuite/decimal/compound-assignment.cc: Likewise.
 830         * testsuite/decimal/compound-assignment-memfunc.cc: Likewise.
 831         * testsuite/decimal/make-decimal.cc: Likewise.
 832         * testsuite/decimal/pr54036-1.cc: Likewise.
 833         * testsuite/decimal/pr54036-2.cc: Likewise.
 834         * testsuite/decimal/pr54036-3.cc: Likewise.
 835         * testsuite/decimal/unary-arith.cc: Likewise.
 836
 837 2024-07-11  Jonathan Wakely  <jwakely@redhat.com>
 838
 839         * testsuite/29_atomics/atomic_ref/bool.cc: New test.
 840
 841 2024-07-11  Damien Lebrun-Grandie  <dalg24@gmail.com>
 842
 843         * include/bits/atomic_base.h (__atomic_ref): Do not use integral
 844         specialization for bool.
 845
 846 2024-07-11  Gerald Pfeifer  <gerald@pfeifer.com>
 847
 848         * doc/xml/manual/using.xml: Switch gcc.gnu.org links to https.
 849         * doc/html/manual/using_concurrency.html: Regenerate.
 850         * doc/html/manual/using_dynamic_or_shared.html: Ditto.
 851         * doc/html/manual/using_headers.html: Ditto.
 852         * doc/html/manual/using_namespaces.html: Ditto.
 853
 854 2024-07-11  Jonathan Wakely  <jwakely@redhat.com>
 855
 856         PR libstdc++/108636
 857         * testsuite/27_io/filesystem/path/108636.cc: Require normal
 858         mode.
 859
 860 2024-07-10  Jonathan Wakely  <jwakely@redhat.com>
 861
 862         PR libstdc++/114387
 863         * include/std/format (basic_format_context): Define copy
 864         operations as deleted, as per LWG 4061.
 865         * testsuite/std/format/context.cc: New test.
 866
 867 2024-07-10  Jonathan Wakely  <jwakely@redhat.com>
 868
 869         * src/c++26/text_encoding.cc (__locale_encoding): Add to unnamed
 870         namespace.
 871         (std::locale::encoding): Optimize for "C" and "*" names.
 872
 873 2024-07-10  Jonathan Wakely  <jwakely@redhat.com>
 874
 875         PR libstdc++/115854
 876         * include/bits/stl_bvector.h (_Bvector_base): Convert allocator
 877         to rebound type explicitly.
 878         * testsuite/23_containers/vector/allocator/115854.cc: New test.
 879         * testsuite/23_containers/vector/bool/allocator/115854.cc: New test.
 880
 881 2024-07-10  Jonathan Wakely  <jwakely@redhat.com>
 882
 883         PR libstdc++/115799
 884         * include/bits/ranges_util.h (__find_fn): Make conversion
 885         from difference type ti size_t explicit.
 886         * testsuite/25_algorithms/find/bytes.cc: Check ranges::find with
 887         __gnu_test::test_contiguous_range.
 888         * testsuite/std/ranges/range.cc: Adjust expected difference_type
 889         for __gnu_test::test_contiguous_range.
 890         * testsuite/util/testsuite_iterators.h (contiguous_iterator_wrapper):
 891         Use __max_diff_type as difference type.
 892         (test_range::sentinel, test_sized_range_sized_sent::sentinel):
 893         Ensure that operator- returns difference_type.
 894
 895 2024-07-10  Marek Polacek  <polacek@redhat.com>
 896
 897         * testsuite/std/ranges/access/101782.cc: Don't compile with
 898         -fconcepts-ts.
 899
 900 2024-07-08  Jonathan Wakely  <jwakely@redhat.com>
 901
 902         PR libstdc++/115807
 903         * include/c_compatibility/stdatomic.h (_Atomic): Ensure it
 904         refers to std::atomic in the global namespace.
 905         * testsuite/29_atomics/headers/stdatomic.h/115807.cc: New test.
 906
 907 2024-07-07  Gerald Pfeifer  <gerald@pfeifer.com>
 908
 909         * doc/xml/manual/configure.xml: Update Autobook 14 link.
 910         Update GCC installation instructions link.
 911         * doc/html/manual/configure.html: Regenerate.
 912
 913 2024-07-07  Jonathan Wakely  <jwakely@redhat.com>
 914
 915         PR libstdc++/115799
 916         * include/bits/stl_algo.h (find): Use 'if constexpr' so that
 917         memchr optimization is a discarded statement for non-contiguous
 918         iterators.
 919         * testsuite/25_algorithms/find/bytes.cc: Check with input
 920         iterators.
 921
 922 2024-07-07  Jonathan Wakely  <jwakely@redhat.com>
 923
 924         PR libstdc++/115799
 925         * include/bits/ranges_util.h (__find_fn): Return iterator
 926         instead of sentinel.
 927         * testsuite/25_algorithms/find/constrained.cc: Check non-common
 928         contiguous sized range of char.
 929
 930 2024-07-06  Jonathan Wakely  <jwakely@redhat.com>
 931
 932         * testsuite/17_intro/headers/c++1998/all_attributes.cc: Add
 933         attribute names from later standards and remove dg-options.
 934         * testsuite/17_intro/headers/c++1998/stdc++.cc: Add c++98_only
 935         target selector.
 936         * testsuite/17_intro/headers/c++1998/stdc++_multiple_inclusion.cc:
 937         Remove content and include stdc++.cc twice instead.
 938         * testsuite/17_intro/headers/c++2011/stdc++.cc: Replace
 939         dg-options with c++11 target selector.
 940         * testsuite/17_intro/headers/c++2011/stdc++_multiple_inclusion.cc:
 941         Remove content and include stdc++.cc twice instead.
 942         * testsuite/17_intro/headers/c++2011/all_attributes.cc: Removed.
 943         * testsuite/17_intro/headers/c++2011/all_no_exceptions.cc: Removed.
 944         * testsuite/17_intro/headers/c++2011/all_no_rtti.cc: Removed.
 945         * testsuite/17_intro/headers/c++2011/all_pedantic_errors.cc: Removed.
 946         * testsuite/17_intro/headers/c++2011/charset.cc: Removed.
 947         * testsuite/17_intro/headers/c++2011/operator_names.cc: Removed.
 948         * testsuite/17_intro/headers/c++2014/all_attributes.cc: Removed.
 949         * testsuite/17_intro/headers/c++2014/all_no_exceptions.cc: Removed.
 950         * testsuite/17_intro/headers/c++2014/all_no_rtti.cc: Removed.
 951         * testsuite/17_intro/headers/c++2014/all_pedantic_errors.cc: Removed.
 952         * testsuite/17_intro/headers/c++2014/charset.cc: Removed.
 953         * testsuite/17_intro/headers/c++2014/operator_names.cc: Removed.
 954         * testsuite/17_intro/headers/c++2014/stdc++.cc: Removed.
 955         * testsuite/17_intro/headers/c++2014/stdc++_multiple_inclusion.cc: Removed.
 956         * testsuite/17_intro/headers/c++2017/all_attributes.cc: Removed.
 957         * testsuite/17_intro/headers/c++2017/all_no_exceptions.cc: Removed.
 958         * testsuite/17_intro/headers/c++2017/all_no_rtti.cc: Removed.
 959         * testsuite/17_intro/headers/c++2017/all_pedantic_errors.cc: Removed.
 960         * testsuite/17_intro/headers/c++2017/charset.cc: Removed.
 961         * testsuite/17_intro/headers/c++2017/operator_names.cc: Removed.
 962         * testsuite/17_intro/headers/c++2017/stdc++.cc: Removed.
 963         * testsuite/17_intro/headers/c++2017/stdc++_multiple_inclusion.cc: Removed.
 964         * testsuite/17_intro/headers/c++2020/all_attributes.cc: Removed.
 965         * testsuite/17_intro/headers/c++2020/all_no_exceptions.cc: Removed.
 966         * testsuite/17_intro/headers/c++2020/all_no_rtti.cc: Removed.
 967         * testsuite/17_intro/headers/c++2020/all_pedantic_errors.cc: Removed.
 968         * testsuite/17_intro/headers/c++2020/charset.cc: Removed.
 969         * testsuite/17_intro/headers/c++2020/operator_names.cc: Removed.
 970         * testsuite/17_intro/headers/c++2020/stdc++.cc: Removed.
 971         * testsuite/17_intro/headers/c++2020/stdc++_multiple_inclusion.cc: Removed.
 972
 973 2024-07-06  Jonathan Wakely  <jwakely@redhat.com>
 974
 975         * include/std/variant (_Variant_storage::_M_reset): Use
 976         __unlikely__ form of attribute instead of unlikely.
 977
 978 2024-07-06  Jonathan Wakely  <jwakely@redhat.com>
 979
 980         PR libstdc++/115797
 981         * include/std/type_traits: Ensure "C++" language linkage.
 982         * testsuite/17_intro/headers/c++2011/linkage.cc: Replace
 983         dg-options with c++11 target selector.
 984
 985 2024-07-05  Jonathan Wakely  <jwakely@redhat.com>
 986
 987         PR c++/115747
 988         * testsuite/tr1/2_general_utilities/shared_ptr/cons/43820_neg.cc:
 989         Add dg-error for new C++26 diagnostics.
 990
 991 2024-07-05  Jonathan Wakely  <jwakely@redhat.com>
 992
 993         * include/bits/stl_uninitialized.h (_UninitDestroyGuard): New
 994         class template and partial specialization.
 995         (__do_uninit_copy, __do_uninit_fill, __do_uninit_fill_n)
 996         (__uninitialized_copy_a, __uninitialized_fill_a)
 997         (__uninitialized_fill_n_a, __uninitialized_copy_move)
 998         (__uninitialized_move_copy, __uninitialized_fill_move)
 999         (__uninitialized_move_fill, __uninitialized_default_1)
1000         (__uninitialized_default_n_a, __uninitialized_default_novalue_1)
1001         (__uninitialized_default_novalue_n_1, __uninitialized_copy_n)
1002         (__uninitialized_copy_n_pair): Use it.
1003
1004 2024-07-05  Jonathan Wakely  <jwakely@redhat.com>
1005
1006         PR libstdc++/88545
1007         PR libstdc++/115040
1008         * include/bits/cpp_type_traits.h (__can_use_memchr_for_find):
1009         New variable template.
1010         * include/bits/ranges_util.h (__find_fn): Use memchr when
1011         possible.
1012         * include/bits/stl_algo.h (find): Likewise.
1013         * testsuite/25_algorithms/find/bytes.cc: New test.
1014
1015 2024-07-04  John David Anglin  <danglin@gcc.gnu.org>
1016
1017         PR libstdc++/98678
1018         * testsuite/30_threads/future/members/poll.cc: Skip on hppa*-*-linux*.
1019
1020 2024-06-28  Jonathan Wakely  <jwakely@redhat.com>
1021
1022         PR libstdc++/115585
1023         * src/c++11/assert_fail.cc (__glibcxx_assert_fail): Add
1024         definition for non-verbose builds.
1025
1026 2024-06-28  Jonathan Wakely  <jwakely@redhat.com>
1027
1028         PR libstdc++/101485
1029         * include/bits/stl_algobase.h (__equal_aux1): Check for
1030         std::byte as well.
1031         * testsuite/25_algorithms/equal/101485.cc: New test.
1032
1033 2024-06-28  Jonathan Wakely  <jwakely@redhat.com>
1034
1035         PR libstdc++/104395
1036         * include/bits/new_allocator.h: Disable extended alignment
1037         support in C++98 mode.
1038         * include/bits/stl_tempbuf.h: Likewise.
1039         * include/ext/bitmap_allocator.h: Likewise.
1040         * include/ext/malloc_allocator.h: Likewise.
1041         * include/ext/mt_allocator.h: Likewise.
1042         * include/ext/pool_allocator.h: Likewise.
1043         * testsuite/ext/104395.cc: New test.
1044
1045 2024-06-28  Jonathan Wakely  <jwakely@redhat.com>
1046
1047         * include/ext/aligned_buffer.h (__aligned_membuf): Use
1048         alignas(T) directly instead of defining a struct and using 9its
1049         alignment.
1050         (__aligned_buffer): Remove use of std::aligned_storage.
1051         * testsuite/abi/aligned_buffers.cc: New test.
1052
1053 2024-06-27  Jonathan Wakely  <jwakely@redhat.com>
1054
1055         PR libstdc++/37475
1056         * config/locale/gnu/codecvt_members.cc (Guard): New RAII type.
1057         (do_out, do_in): Return partial if the destination is empty but
1058         the source is not. Use Guard to restore locale on scope exit.
1059         Return immediately on any conversion error.
1060         (do_encoding, do_max_length, do_length): Use Guard.
1061         * testsuite/22_locale/codecvt/in/char/37475.cc: New test.
1062         * testsuite/22_locale/codecvt/in/wchar_t/37475.cc: New test.
1063         * testsuite/22_locale/codecvt/out/char/37475.cc: New test.
1064         * testsuite/22_locale/codecvt/out/wchar_t/37475.cc: New test.
1065
1066 2024-06-27  Alexandre Oliva  <oliva@adacore.com>
1067
1068         PR libstdc++/115454
1069         * testsuite/experimental/simd/pr115454_find_last_set.cc: Defer
1070         to check_vect_support_and_set_flags's default dg-do action.
1071
1072 2024-06-27  Jonathan Wakely  <jwakely@redhat.com>
1073
1074         PR libstdc++/115668
1075         * include/bits/chrono_io.h (formatter<duration<R,P, C>::format):
1076         Do not use chrono::abs.
1077         * testsuite/20_util/duration/io.cc: Check formatting a duration
1078         with unsigned rep.
1079
1080 2024-06-27  Jonathan Wakely  <jwakely@redhat.com>
1081
1082         PR libstdc++/103191
1083         * include/bits/stl_bvector.h (vector<bool>::operator[])
1084         (vector<bool>::front, vector<bool>::back): Add debug assertions.
1085         * testsuite/23_containers/vector/bool/element_access/constexpr.cc:
1086         Remove dg-error that no longer triggers.
1087
1088 2024-06-27  Jonathan Wakely  <jwakely@redhat.com>
1089
1090         PR libstdc++/111250
1091         * include/debug/assertions.h (__glibcxx_requires_non_empty_range)
1092         (__glibcxx_requires_nonempty, __glibcxx_requires_subscript):
1093         Define to __glibcxx_assert expressions or to debug mode
1094         __glibcxx_check_xxx expressions.
1095         * testsuite/23_containers/array/element_access/constexpr_c++17.cc:
1096         Add checks for out-of-bounds accesses in constant expressions.
1097         * testsuite/23_containers/vector/element_access/constexpr.cc:
1098         Likewise.
1099
1100 2024-06-26  Jonathan Wakely  <jwakely@redhat.com>
1101
1102         * scripts/update_release_branch.sh: New file.
1103
1104 2024-06-26  Jonathan Wakely  <jwakely@redhat.com>
1105
1106         * testsuite/20_util/specialized_algorithms/uninitialized_copy/808590.cc:
1107         Copy defaulted assignment operator from 808590-cxx11.cc to
1108         suppress a warning.
1109         * testsuite/20_util/specialized_algorithms/uninitialized_copy/808590-cxx11.cc:
1110         Removed.
1111
1112 2024-06-26  Jonathan Wakely  <jwakely@redhat.com>
1113
1114         PR libstdc++/90276
1115         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc:
1116         Increase timeout for debug mode.
1117         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_binary.cc:
1118         Likewise.
1119         * testsuite/25_algorithms/pstl/alg_nonmodifying/mismatch.cc:
1120         Likewise.
1121         * testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc:
1122         Likewise.
1123         * testsuite/25_algorithms/pstl/alg_sorting/minmax_element.cc:
1124         Likewise.
1125         * testsuite/25_algorithms/pstl/alg_sorting/set_symmetric_difference.cc:
1126         Likewise.
1127
1128 2024-06-26  Jonathan Wakely  <jwakely@redhat.com>
1129
1130         PR libstdc++/90276
1131         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc
1132         [_GLIBCXX_DEBUG]: Add xfail-run-if for debug mode.
1133         * testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc
1134         [_GLIBCXX_DEBUG]: Reduce size of test data.
1135         * testsuite/25_algorithms/pstl/alg_sorting/includes.cc:
1136         Likewise.
1137         * testsuite/25_algorithms/pstl/alg_sorting/set_util.h:
1138         Likewise.
1139
1140 2024-06-26  Jonathan Wakely  <jwakely@redhat.com>
1141
1142         * src/c++20/tzdb.cc (minmax_year, minmax_year2): Remove.
1143         (years_from_to): New class replacing minmax_year and
1144         minmax_year2.
1145         (format_abbrev_str, select_std_or_dst_abbrev): Move earlier in
1146         the file. Handle "-" for letters.
1147         (ZoneInfo::to): Use format_abbrev_str to expand %z.
1148         (ZoneInfo::set_abbrev): Remove exception. Change parameter from
1149         reference to value.
1150         (operator>>(istream&, Rule&)): Do not clear letters when it
1151         contains "-".
1152         (time_zone::_M_get_sys_info): Add missing logic to find the Rule
1153         in effect before the time point.
1154         * testsuite/std/time/tzdb/1.cc: Adjust for vanguard format using
1155         "GMT" as the Zone name, not as a Link to "Etc/GMT".
1156         * testsuite/std/time/time_zone/sys_info_abbrev.cc: New test.
1157
1158 2024-06-26  Alexandre Oliva  <oliva@adacore.com>
1159             Marc Poulhiès  <poulhies@adacore.com>
1160
1161         * testsuite/lib/dg-options.exp (add_options_for_libatomic):
1162         None for *-*-vxworks*.
1163
1164 2024-06-25  Jonathan Wakely  <jwakely@redhat.com>
1165
1166         * include/bits/valarray_array.h (_Array_default_ctor): Remove.
1167         (__valarray_default_construct): Inline it into here.
1168         (_Array_init_ctor): Remove.
1169         (__valarray_fill_construct): Inline it into here.
1170         (_Array_copy_ctor): Remove.
1171         (__valarray_copy_construct(const T*, const T*, T*)): Inline it
1172         into here.
1173         (__valarray_copy_construct(const T*, size_t, size_t, T*)):
1174         Use _GLIBCXX17_CONSTEXPR for constant condition.
1175
1176 2024-06-25  Jonathan Wakely  <jwakely@redhat.com>
1177
1178         * doc/xml/faq.xml: Replace viewcvs links with cgit links.
1179         * doc/xml/manual/allocator.xml: Likewise.
1180         * doc/xml/manual/mt_allocator.xml: Likewise.
1181         * doc/html/*: Regenerate.
1182
1183 2024-06-22  Gerald Pfeifer  <gerald@pfeifer.com>
1184
1185         * doc/xml/manual/debug.xml: Move gcc.gnu.org link to https.
1186         Ditto for sourceware.org links.
1187         * doc/html/manual/debug.html: Regenerate.
1188
1189 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
1190
1191         PR libstdc++/115497
1192         * include/bits/cpp_type_traits.h (__is_pointer, __is_scalar):
1193         Remove.
1194         (__is_arithmetic): Do not use __is_pointer in the primary
1195         template. Add partial specialization for pointers.
1196
1197 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
1198
1199         PR libstdc++/115497
1200         * include/bits/cpp_type_traits.h (__is_void): Remove.
1201         * include/debug/helper_functions.h (_Distance_traits):
1202         Adjust partial specialization to match void directly, instead of
1203         using __is_void<T>::__type and matching __true_type.
1204
1205 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
1206
1207         PR libstdc++/115497
1208         * include/bits/deque.tcc (__lex_cmp_dit): Replace __is_pointer
1209         class template with __is_pointer(T) built-in.
1210         (__lexicographical_compare_aux1): Likewise.
1211         * include/bits/stl_algobase.h (__equal_aux1): Likewise.
1212         (__lexicographical_compare_aux1): Likewise.
1213
1214 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
1215
1216         PR libstdc++/115497
1217         * include/bits/valarray_array.h (__valarray_default_construct):
1218         Use __is_trivial(_Tp). instead of __is_scalar<_Tp>.
1219
1220 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
1221
1222         PR libstdc++/109150
1223         * include/bits/stl_algobase.h (__fill_a1): Combine the
1224         !__is_scalar and __is_scalar overloads into one and rewrite the
1225         condition used to decide whether to perform the load outside the
1226         loop.
1227         * testsuite/25_algorithms/fill/109150.cc: New test.
1228         * testsuite/25_algorithms/fill_n/109150.cc: New test.
1229
1230 2024-06-21  Matthias Kretz  <m.kretz@gsi.de>
1231
1232         PR libstdc++/115575
1233         * testsuite/experimental/simd/pr115454_find_last_set.cc: Require
1234         avx512f_runtime. Don't memcpy fixed_size masks.
1235
1236 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
1237
1238         * include/bits/stl_uninitialized.h (uninitialized_default_construct)
1239         (uninitialized_default_construct_n, uninitialized_value_construct)
1240         (uninitialized_value_construct_n): Qualify calls to prevent ADL.
1241
1242 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
1243
1244         * include/std/any (any_cast(any*), any_cast(const any*)): Add
1245         static assertion to reject void types, as per LWG 3305.
1246         * testsuite/20_util/any/misc/lwg3305.cc: New test.
1247
1248 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
1249
1250         * include/bits/memory_resource.h (polymorphic_allocator::destroy):
1251         Remove deprecated attribute.
1252
1253 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
1254
1255         * include/backward/backward_warning.h: Adjust comments to
1256         suggest <spanstream> as another alternative to <strstream>.
1257         * include/backward/strstream (strstreambuf, istrstream)
1258         (ostrstream, strstream): Add deprecated attribute.
1259
1260 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
1261
1262         * include/bits/locale_conv.h (wstring_convert): Add deprecated
1263         attribute for C++17 and later.
1264         (wbuffer_convert): Likewise.
1265         * testsuite/22_locale/codecvt/codecvt_utf16/79980.cc: Disable
1266         deprecated warnings.
1267         * testsuite/22_locale/codecvt/codecvt_utf8/79980.cc: Likewise.
1268         * testsuite/22_locale/codecvt/codecvt_utf8_utf16/79511.cc:
1269         Likewise.
1270         * testsuite/22_locale/conversions/buffer/1.cc: Add dg-warning.
1271         * testsuite/22_locale/conversions/buffer/2.cc: Likewise.
1272         * testsuite/22_locale/conversions/buffer/3.cc: Likewise.
1273         * testsuite/22_locale/conversions/buffer/requirements/typedefs.cc:
1274         Likewise.
1275         * testsuite/22_locale/conversions/string/1.cc: Likewise.
1276         * testsuite/22_locale/conversions/string/2.cc: Likewise.
1277         * testsuite/22_locale/conversions/string/3.cc: Likewise.
1278         * testsuite/22_locale/conversions/string/66441.cc: Likewise.
1279         * testsuite/22_locale/conversions/string/requirements/typedefs-2.cc:
1280         Likewise.
1281         * testsuite/22_locale/conversions/string/requirements/typedefs.cc:
1282         Likewise.
1283
1284 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
1285
1286         * include/bits/version.def (chrono): Add cxx11abi = yes.
1287         * include/bits/version.h: Regenerate.
1288         * testsuite/std/time/syn_c++20.cc: Adjust expected value for
1289         the feature test macro.
1290
1291 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
1292
1293         PR libstdc++/115522
1294         * include/std/array (to_array): Workaround the fact that
1295         std::is_trivial is not sufficient to check that a type is
1296         trivially default constructible and assignable.
1297         * testsuite/23_containers/array/creation/115522.cc: New test.
1298
1299 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
1300
1301         * testsuite/util/testsuite_allocator.h (tracker_allocator):
1302         Initialize base class in copy constructor.
1303
1304 2024-06-20  Matthias Kretz  <m.kretz@gsi.de>
1305
1306         PR libstdc++/115454
1307         * include/experimental/bits/simd_x86.h (_S_not_equal_to): Use
1308         neq comparison instead of bitwise negation after eq.
1309         (_S_find_last_set): Clear unused high bits before computing
1310         bit_width.
1311         * testsuite/experimental/simd/pr115454_find_last_set.cc: New
1312         test.
1313
1314 2024-06-19  Jonathan Wakely  <jwakely@redhat.com>
1315
1316         * include/std/future: Adjust whitespace to use tabs for
1317         indentation.
1318
1319 2024-06-19  Jonathan Wakely  <jwakely@redhat.com>
1320
1321         * include/std/future (_State_baseV2::_Setter<R, void>): Add
1322         noexcept to call operator.
1323         (_State_baseV2::_Setter<R, __exception_ptr_tag>): Likewise.
1324
1325 2024-06-19  Jonathan Wakely  <jwakely@redhat.com>
1326
1327         * include/bits/stl_pair.h [__cpp_lib_concepts] (pair()): Add
1328         conditional noexcept.
1329
1330 2024-06-19  Jonathan Wakely  <jwakely@redhat.com>
1331
1332         * include/bits/stl_tempbuf.h (__get_temporary_buffer): Cast
1333         argument to size_t to handle negative values and suppress
1334         -Wsign-compare warning.
1335         (_Temporary_buffer): Move diagnostic pragmas to new location of
1336         call to std::get_temporary_buffer.
1337
1338 2024-06-18  Jonathan Wakely  <jwakely@redhat.com>
1339
1340         * include/bits/cpp_type_traits.h: Fix outdated comment about the
1341         number of standard integer types.
1342
1343 2024-06-14  Jonathan Wakely  <jwakely@redhat.com>
1344
1345         PR libstdc++/110572
1346         * libsupc++/typeinfo (type_info::operator==): Add always_inline
1347         attribute for targets where the ABI requries equality to be
1348         non-inline.
1349         * testsuite/18_support/type_info/110572.cc: New test.
1350
1351 2024-06-14  Jonathan Wakely  <jwakely@redhat.com>
1352
1353         * libsupc++/new_opa.cc [!_GLIBCXX_HOSTED]: Fix declaration of
1354         posix_memalign.
1355
1356 2024-06-13  Alexandre Oliva  <oliva@adacore.com>
1357
1358         PR libstdc++/114359
1359         * testsuite/26_numerics/random/binomial_distribution/114359.cc:
1360         Require cmath.
1361
1362 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
1363
1364         * include/std/type_traits (__add_rval_ref_t): Use
1365         __add_rvalue_reference built-in trait.
1366
1367 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
1368
1369         * include/std/type_traits (__add_lval_ref_t): Use
1370         __add_lvalue_reference built-in trait.
1371
1372 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
1373             Jonathan Wakely  <jwakely@redhat.com>
1374
1375         * include/bits/cpp_type_traits.h (__is_pointer): Use
1376         __is_pointer built-in trait.
1377         * include/std/type_traits (is_pointer): Likewise.  Optimize its
1378         implementation.
1379         (is_pointer_v): Likewise.
1380
1381 2024-06-13  Jonathan Wakely  <jwakely@redhat.com>
1382
1383         * include/bits/ranges_base.h (range_common_reference_t): New
1384         alias template, as per LWG 3860.
1385         * testsuite/std/ranges/range.cc: Check it.
1386
1387 2024-06-13  Jonathan Wakely  <jwakely@redhat.com>
1388
1389         * include/bits/ranges_base.h (const_iterator_t): Change
1390         preprocessor condition to use __glibcxx_ranges_as_const.
1391         (const_sentinel_t, range_const_reference_t): Likewise.
1392         (__access::__possibly_const_range, cbegin, cend, crbegin)
1393         (crend, cdata): Likewise.
1394         * include/bits/stl_iterator.h (iter_const_reference_t)
1395         (basic_const_iterator, const_iterator, const_sentinel)
1396         (make_const_iterator): Likewise.
1397
1398 2024-06-13  Jonathan Wakely  <jwakely@redhat.com>
1399
1400         PR libstdc++/115420
1401         * include/bits/hashtable.h (_Hashtable): Add static_assert to
1402         check that hash function is copy constructible.
1403         * testsuite/23_containers/unordered_map/115420.cc: New test.
1404
1405 2024-06-13  Jonathan Wakely  <jwakely@redhat.com>
1406
1407         PR libstdc++/113376
1408         * include/pstl/pstl_config.h: Use #if instead of #ifdef to test
1409         the _PSTL_USAGE_WARNINGS macro.
1410
1411 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
1412
1413         * include/std/type_traits (is_nothrow_invocable): Use
1414         __is_nothrow_invocable built-in trait.
1415         * testsuite/20_util/is_nothrow_invocable/incomplete_args_neg.cc:
1416         Handle the new error from __is_nothrow_invocable.
1417         * testsuite/20_util/is_nothrow_invocable/incomplete_neg.cc:
1418         Likewise.
1419
1420 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
1421
1422         * include/std/type_traits (is_invocable): Use __is_invocable
1423         built-in trait.
1424         * testsuite/20_util/is_invocable/incomplete_args_neg.cc: Handle
1425         the new error from __is_invocable.
1426         * testsuite/20_util/is_invocable/incomplete_neg.cc: Likewise.
1427
1428 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
1429
1430         * include/std/type_traits (rank): Use __array_rank built-in
1431         trait.
1432         (rank_v): Likewise.
1433
1434 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
1435
1436         * include/std/type_traits (decay): Use __decay built-in trait.
1437
1438 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
1439
1440         * include/std/type_traits (remove_all_extents): Use
1441         __remove_all_extents built-in trait.
1442
1443 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
1444
1445         * include/std/type_traits (remove_extent): Use __remove_extent
1446         built-in trait.
1447
1448 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
1449
1450         * include/std/type_traits (add_pointer): Use __add_pointer
1451         built-in trait.
1452
1453 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
1454
1455         * include/std/type_traits (is_unbounded_array_v): Use
1456         __is_unbounded_array built-in trait.
1457
1458 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
1459
1460         * include/std/type_traits (is_volatile): Use __is_volatile
1461         built-in trait.
1462         (is_volatile_v): Likewise.
1463
1464 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
1465
1466         * include/std/type_traits (is_const): Use __is_const built-in
1467         trait.
1468         (is_const_v): Likewise.
1469
1470 2024-06-12  Alexandre Oliva  <oliva@adacore.com>
1471
1472         * testsuite/26_numerics/headers/cmath/constexpr_std_c++23.cc:
1473         Require cmath.
1474         * testsuite/26_numerics/headers/cmath/functions_std_c++23.cc:
1475         Likewise.
1476         * testsuite/26_numerics/headers/cmath/nextafter_c++23.cc:
1477         Likewise.
1478
1479 2024-06-12  Alexandre Oliva  <oliva@adacore.com>
1480
1481         * testsuite/20_util/from_chars/8.cc: Skip float128_t testing
1482         on aarch64-rtems*.
1483         * testsuite/20_util/to_chars/float128_c++23.cc: Xfail run on
1484         aarch64-rtems*.
1485
1486 2024-06-12  Jonathan Wakely  <jwakely@redhat.com>
1487
1488         PR libstdc++/115399
1489         * include/tr2/dynamic_bitset (operator>>=): Remove redundant
1490         call to _M_do_sanitize.
1491         * include/tr2/dynamic_bitset.tcc (_M_do_left_shift): Zero out
1492         low bits in words that should no longer be populated.
1493         (_M_do_right_shift): Likewise for high bits.
1494         * testsuite/tr2/dynamic_bitset/pr115399.cc: New test.
1495
1496 2024-06-12  Jonathan Wakely  <jwakely@redhat.com>
1497
1498         * include/bits/hashtable.h (_Hashtable::clear): Do not use
1499         memset to zero out bucket pointers.
1500         (_Hashtable::_M_assign_elements): Likewise.
1501
1502 2024-06-11  Jonathan Wakely  <jwakely@redhat.com>
1503
1504         * include/std/chrono (leap_seconds): Add comment.
1505         * testsuite/std/time/leap_seconds/io.cc: New test.
1506
1507 2024-06-10  François Dumont  <fdumont@gcc.gnu.org>
1508
1509         * include/bits/hashtable.h (~_Hashtable()): Replace clear call with
1510         a _M_deallocate_nodes call.
1511
1512 2024-06-08  Deev Patel  <dkp10000@gmail.com>
1513             Jonathan Wakely  <jwakely@redhat.com>
1514
1515         * include/bits/atomic_base.h (__atomic_impl::__clear_padding):
1516         Add missing constexpr specifier.
1517         * testsuite/29_atomics/atomic_float/constinit.cc: New test.
1518
1519 2024-06-08  Michael Levine  <mlevine55@bloomberg.net>
1520
1521         PR libstdc++/108760
1522         * include/bits/ranges_algo.h (ranges::out_value_result):
1523         Move to <bits/ranges_algobase.h>.
1524         (ranges::iota_result, ranges::__iota_fn, ranges::iota): Move to
1525         <numeric>.
1526         * include/bits/ranges_algobase.h (ranges::out_value_result):
1527         Move to here.
1528         * include/std/numeric (ranges::iota_result, ranges::__iota_fn)
1529         (ranges::iota): Move to here.
1530         * testsuite/25_algorithms/iota/1.cc: Renamed to ...
1531         * testsuite/26_numerics/iota/2.cc: ... here.
1532
1533 2024-06-08  Jonathan Wakely  <jwakely@redhat.com>
1534
1535         * include/std/algorithm: Define __glibcxx_want_ranges.
1536         * testsuite/25_algorithms/headers/algorithm/synopsis.cc: Check
1537         feature test macro in C++20 mode.
1538
1539 2024-06-07  Jonathan Wakely  <jwakely@redhat.com>
1540
1541         * include/bits/ranges_algobase.h: Include <bits/stl_algobase.h>.
1542
1543 2024-06-07  Alexandre Oliva  <oliva@adacore.com>
1544
1545         * include/std/variant: Drop obsolete workaround.
1546
1547 2024-06-07  Jonathan Wakely  <jwakely@redhat.com>
1548
1549         * include/bits/ptr_traits.h (to_address): Optimize.
1550         * testsuite/20_util/to_address/1_neg.cc: Adjust dg-error text.
1551
1552 2024-06-06  Alexandre Oliva  <oliva@adacore.com>
1553
1554         * include/bits/c++config (_GLIBCXX_CLANG): Define or undefine.
1555         * include/bits/locale_facets_nonio.tcc: Test for it.
1556         * include/bits/stl_bvector.h: Likewise.
1557         * include/c_compatibility/stdatomic.h: Likewise.
1558         * include/experimental/bits/simd.h: Likewise.
1559         * include/experimental/bits/simd_builtin.h: Likewise.
1560         * include/experimental/bits/simd_detail.h: Likewise.
1561         * include/experimental/bits/simd_x86.h: Likewise.
1562         * include/experimental/simd: Likewise.
1563         * include/std/complex: Likewise.
1564         * include/std/ranges: Likewise.
1565         * include/std/variant: Likewise.
1566         * include/pstl/pstl_config.h: Likewise.
1567
1568 2024-06-05  Gerald Pfeifer  <gerald@pfeifer.com>
1569
1570         * doc/xml/faq.xml: Move gcc.gnu.org to https.
1571         * doc/html/faq.html: Regenerate.
1572
1573 2024-06-04  Jonathan Wakely  <jwakely@redhat.com>
1574
1575         PR libstdc++/115335
1576         * include/std/span (span::at): Guard with feature test macro.
1577
1578 2024-06-04  Matthias Kretz  <m.kretz@gsi.de>
1579
1580         PR libstdc++/115308
1581         * include/experimental/bits/simd.h (__int_for_sizeof): Remove
1582         special cases for __clang__.
1583         (_SimdWrapper): Change constructor overload set to allow
1584         conversion from vector types with integral conversions via bit
1585         reinterpretation.
1586
1587 2024-06-03  Jonathan Wakely  <jwakely@redhat.com>
1588
1589         * include/std/stacktrace (basic_stacktrace::_Impl::_M_allocate):
1590         Use __detail::__get_temporary_buffer.
1591         (basic_stacktrace::_Impl::_M_deallocate): Use
1592         __detail::__return_temporary_buffer.
1593
1594 2024-06-03  Jonathan Wakely  <jwakely@redhat.com>
1595
1596         PR libstdc++/105258
1597         * include/bits/stl_tempbuf.h (__detail::__get_temporary_buffer):
1598         New function to do allocation for get_temporary_buffer, with
1599         extended alignment support.
1600         (__detail::__return_temporary_buffer): Support extended
1601         alignment.
1602         (get_temporary_buffer): Use __get_temporary_buffer.
1603         (return_temporary_buffer): Support extended alignment. Add
1604         deprecated attribute.
1605         (_Temporary_buffer): Move allocation and deallocation into a
1606         subobject and remove try-catch block in constructor.
1607         (__uninitialized_construct_buf): Use argument deduction for
1608         value type.
1609         * testsuite/20_util/temporary_buffer.cc: Add dg-warning for new
1610         deprecated warning.
1611         * testsuite/25_algorithms/stable_sort/overaligned.cc: New test.
1612
1613 2024-06-03  François Dumont  <frs.dumont@gmail.com>
1614
1615         PR libstdc++/109849
1616         * include/bits/vector.tcc
1617         (std::vector<>::_M_range_insert(iterator, _FwdIt, _FwdIt,
1618         forward_iterator_tag))[__cplusplus < 201103L]: Add __builtin_unreachable
1619         expression to tell the compiler that the allocated buffer is large enough to
1620         receive current elements plus the elements of the range to insert.
1621
1622 2024-06-03  Jonathan Wakely  <jwakely@redhat.com>
1623
1624         * include/std/string_view (starts_with(basic_string_view)):
1625         Compare lengths first and then call traits_type::compare
1626         directly.
1627
1628 2024-06-02  Gerald Pfeifer  <gerald@pfeifer.com>
1629
1630         * doc/xml/api.xml: Move gcc.gnu.org links to https.
1631         * doc/html/api.html: Regenerate.
1632
1633 2024-06-01  Jonathan Wakely  <jwakely@redhat.com>
1634
1635         PR libstdc++/115269
1636         * doc/xml/manual/using.xml: Replace link to gcc-4.3.2 docs.
1637         Replace list of -std=... options with a single entry for -std.
1638         * doc/html/manual/using.html: Regenerate.
1639
1640 2024-05-30  Alexandre Oliva  <oliva@adacore.com>
1641
1642         * configure.ac [*-*-rtems*]: Set chdir, chmod and mkdir as
1643         available.
1644         * configure: Rebuilt.
1645
1646 2024-05-29  François Dumont  <fdumont@gcc.gnu.org>
1647
1648         * include/bits/vector.tcc (_Guard): Move all the nested duplicated class...
1649         * include/bits/stl_vector.h (_Guard_alloc): ...here and rename.
1650         (_M_allocate_and_copy): Use latter.
1651         (_M_initialize_dispatch): Small code simplification.
1652         (_M_range_initialize): Likewise and set _M_finish first from the result
1653         of __uninitialize_fill_n_a that can throw.
1654
1655 2024-05-29  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
1656
1657         PR libstdc++/111641
1658         * src/libbacktrace/Makefile.am (AM_CFLAGS): Add -funwind-tables.
1659         * src/libbacktrace/Makefile.in: Regenerate.
1660         * testsuite/19_diagnostics/stacktrace/current.cc (dg-options): Add
1661         -funwind-tables.
1662         * testsuite/19_diagnostics/stacktrace/entry.cc: Likewise.
1663         * testsuite/19_diagnostics/stacktrace/hash.cc: Likewise.
1664         * testsuite/19_diagnostics/stacktrace/output.cc: Likewise.
1665         * testsuite/19_diagnostics/stacktrace/stacktrace.cc: Likewise.
1666
1667 2024-05-29  Matthias Kretz  <m.kretz@gsi.de>
1668
1669         PR libstdc++/115247
1670         * include/experimental/bits/simd.h (__as_vector): Don't use
1671         vector_size(8) on __i386__.
1672         (__vec_shuffle): Never return MMX vectors, widen to 16 bytes
1673         instead.
1674         (concat): Fix padding calculation to pick up widening logic from
1675         __as_vector.
1676
1677 2024-05-23  Patrick Palka  <ppalka@redhat.com>
1678
1679         * include/bits/version.def (ranges_concat): Define.
1680         * include/bits/version.h: Regenerate.
1681         * include/std/ranges (__detail::__concat_reference_t): Define
1682         for C++26.
1683         (__detail::__concat_value_t): Likewise.
1684         (__detail::__concat_rvalue_reference_t): Likewise.
1685         (__detail::__concat_indirectly_readable_impl): Likewise.
1686         (__detail::__concat_indirectly_readable): Likewise.
1687         (__detail::__concatable): Likewise.
1688         (__detail::__all_but_last_common): Likewise.
1689         (__detail::__concat_is_random_access): Likewise.
1690         (__detail::__concat_is_bidirectional): Likewise.
1691         (__detail::__last_is_common): Likewise.
1692         (concat_view): Likewise.
1693         (__detail::__concat_view_iter_cat): Likewise.
1694         (concat_view::iterator): Likewise.
1695         (views::__detail::__can_concat_view): Likewise.
1696         (views::_Concat, views::concat): Likewise.
1697         * testsuite/std/ranges/concat/1.cc: New test.
1698
1699 2024-05-22  Jonathan Wakely  <jwakely@redhat.com>
1700
1701         * include/bits/locale_classes.h (locale::combine)
1702         (locale::name, locale::operator==, locale::operator!=)
1703         (locale::operator(), locale::classic): Add nodiscard
1704         attribute.
1705         * include/bits/locale_classes.tcc (has_facet, use_facet):
1706         Likewise.
1707         * testsuite/22_locale/locale/cons/12438.cc: Add dg-warning for
1708         nodiscard diagnostic.
1709         * testsuite/22_locale/locale/cons/2.cc: Cast use_facet
1710         expression to void, to suppress diagnostic.
1711         * testsuite/22_locale/locale/cons/unicode.cc: Likewise.
1712         * testsuite/22_locale/locale/operations/2.cc: Add dg-warning.
1713
1714 2024-05-22  Jonathan Wakely  <jwakely@redhat.com>
1715
1716         PR libstdc++/108323
1717         * include/bits/locale_classes.tcc (locale(const locale&, Facet*)):
1718         Return a copy of the first argument when the facet pointer is
1719         null, as per LWG 2295.
1720         (locale::combine): Ensure the result is unnamed.
1721         * src/c++11/localename.cc (_M_replace_categories): Ignore
1722         whether the second locale has a name when cat == none, as per
1723         LWG 3676.
1724         * src/c++98/locale.cc (_M_install_facet): Use __builtin_expect
1725         to predict that the facet pointer is non-null.
1726         * testsuite/22_locale/locale/cons/names.cc: New test.
1727
1728 2024-05-22  Jonathan Wakely  <jwakely@redhat.com>
1729
1730         PR libstdc++/114940
1731         * include/bits/version.def (generator): Depend on
1732         __cpp_sized_deallocation.
1733         * include/bits/version.h: Regenerate.
1734         * include/std/stacktrace (_GLIBCXX_SIZED_DELETE): New macro.
1735         (basic_stacktrace::_Impl::_M_deallocate): Use it.
1736
1737 2024-05-22  Jonathan Wakely  <jwakely@redhat.com>
1738
1739         PR libstdc++/115099
1740         * include/bits/std_thread.h: Declare formatter as friend of
1741         thread::id.
1742         * include/std/thread (operator<<): Convert non-void pointers to
1743         void pointers for output.
1744         (formatter): Add constraint that thread::native_handle_type is a
1745         pointer or integer.
1746         (formatter::format): Reimplement without basic_ostringstream.
1747         * testsuite/30_threads/thread/id/output.cc: Check output
1748         compiles before <sstream> has been included.
1749
1750 2024-05-22  Jonathan Wakely  <jwakely@redhat.com>
1751
1752         PR libstdc++/115145
1753         * include/std/variant (operator==, operator!=, operator<)
1754         (operator<=, operator>, operator>=): Add trailing-return-type to
1755         lambda expressions to trigger conversion to bool.
1756         * testsuite/20_util/variant/relops/115145.cc: New test.
1757
1758 2024-05-17  Björn Schäpers  <bjoern@hazardy.de>
1759
1760         * acinclude.m4 (GLIBCXX_ENABLE_BACKTACE): Add check for
1761         tlhelp32.h, matching libbacktrace.
1762         * config.h.in: Regenerate.
1763         * configure: Regenerate.
1764
1765 2024-05-17  Jonathan Wakely  <jwakely@redhat.com>
1766
1767         PR libstdc++/115119
1768         * include/bits/unicode.h (_Iterator::operator++(int)): Fix typo
1769         in increment expression.
1770         * testsuite/ext/unicode/grapheme_view.cc: Check post-increment
1771         on view's iterator.
1772
1773 2024-05-15  Jonathan Wakely  <jwakely@redhat.com>
1774
1775         PR libstdc++/77704
1776         * include/bits/basic_ios.h (basic_ios::fill()): Do not modify
1777         _M_fill and _M_fill_init in a const member function.
1778         (basic_ios::fill(char_type)): Use _M_fill directly instead of
1779         calling fill(). Set _M_fill_init to true.
1780         * include/bits/basic_ios.tcc (basic_ios::init): Set _M_fill and
1781         _M_fill_init here instead.
1782         * testsuite/27_io/basic_ios/fill/char/1.cc: New test.
1783         * testsuite/27_io/basic_ios/fill/wchar_t/1.cc: New test.
1784
1785 2024-05-15  Jonathan Wakely  <jwakely@redhat.com>
1786
1787         * include/std/variant (__detail::__variant::__compare): New
1788         function template.
1789         (operator==, operator!=, operator<, operator>, operator<=)
1790         (operator>=): Replace macro definition with handwritten function
1791         calling __detail::__variant::__compare.
1792         (operator<=>): Call __detail::__variant::__compare.
1793
1794 2024-05-15  Jonathan Wakely  <jwakely@redhat.com>
1795
1796         PR libstdc++/89624
1797         * include/bits/atomic_base.h (memory_order): Use int as
1798         underlying type.
1799         * testsuite/29_atomics/atomic/89624.cc: New test.
1800
1801 2024-05-14  Jonathan Wakely  <jwakely@redhat.com>
1802
1803         PR libstdc++/115015
1804         * src/c++23/print.cc (__open_terminal(streambuf*)) [!__cpp_rtti]:
1805         Do not use dynamic_cast.
1806
1807 2024-05-14  Jonathan Wakely  <jwakely@redhat.com>
1808
1809         * doc/xml/manual/strings.xml: Clarify that GCC 4.5 added
1810         std::string::shrink_to_fit.
1811         * doc/html/manual/strings.html: Regenerate.
1812
1813 2024-05-14  Jonathan Wakely  <jwakely@redhat.com>
1814
1815         PR libstdc++/115063
1816         * include/std/stacktrace (basic_stacktrace::max_size): Fix typo
1817         in reference to _M_alloc member.
1818         * testsuite/19_diagnostics/stacktrace/stacktrace.cc: Check
1819         max_size() compiles.
1820
1821 2024-05-13  Matthias Kretz  <m.kretz@gsi.de>
1822
1823         PR libstdc++/114958
1824         * include/experimental/bits/simd.h (__as_vector): Return scalar
1825         simd as one-element vector. Return vector from single-vector
1826         fixed_size simd.
1827         (__vec_shuffle): New.
1828         (__extract_part): Adjust return type signature.
1829         (split): Use __extract_part for any split into non-fixed_size
1830         simds.
1831         (concat): If the return type stores a single vector, use
1832         __vec_shuffle (which calls __builtin_shufflevector) to produce
1833         the return value.
1834         * include/experimental/bits/simd_builtin.h
1835         (__shift_elements_right): Removed.
1836         (__extract_part): Return single elements directly. Use
1837         __vec_shuffle (which calls __builtin_shufflevector) to for all
1838         non-trivial cases.
1839         * include/experimental/bits/simd_fixed_size.h (__extract_part):
1840         Return single elements directly.
1841         * testsuite/experimental/simd/pr114958.cc: New test.
1842
1843 2024-05-07  Jonathan Wakely  <jwakely@redhat.com>
1844
1845         * include/bits/unicode.h (_Unicode_view::_M_read_utf8): Ensure
1846         count of characters consumed is correct when the end of the
1847         input is reached unexpectedly.
1848         * testsuite/ext/unicode/view.cc: Test incomplete UTF-8
1849         sequences.
1850
1851 2024-05-07  Jonathan Wakely  <jwakely@redhat.com>
1852
1853         PR libstdc++/114866
1854         * include/bits/out_ptr.h [!_GLIBCXX_HOSTED]: Don't refer to
1855         shared_ptr, __shared_ptr or __is_shred_ptr.
1856         * testsuite/20_util/headers/memory/114866.cc: New test.
1857
1858 2024-05-07  Jonathan Wakely  <jwakely@redhat.com>
1859
1860         * include/std/variant (_VARIANT_RELATION_FUNCTION_TEMPLATE):
1861         Simplify.
1862
1863 2024-05-07  Jonathan Wakely  <jwakely@redhat.com>
1864
1865         * include/bits/stl_pair.h (operator==): Add constraint.
1866         * include/bits/version.def (constrained_equality): Define.
1867         * include/bits/version.h: Regenerate.
1868         * include/std/optional: Define feature test macro.
1869         (__optional_rep_op_t): Use is_convertible_v instead of
1870         is_convertible.
1871         * include/std/tuple: Define feature test macro.
1872         (operator==, __tuple_cmp, operator<=>): Reimplement C++20
1873         comparisons using lambdas. Add constraints.
1874         * include/std/utility: Define feature test macro.
1875         * include/std/variant: Define feature test macro.
1876         (_VARIANT_RELATION_FUNCTION_TEMPLATE): Add constraints.
1877         (variant): Remove unnecessary friend declarations for comparison
1878         operators.
1879         * testsuite/20_util/optional/relops/constrained.cc: New test.
1880         * testsuite/20_util/pair/comparison_operators/constrained.cc:
1881         New test.
1882         * testsuite/20_util/tuple/comparison_operators/constrained.cc:
1883         New test.
1884         * testsuite/20_util/variant/relops/constrained.cc: New test.
1885         * testsuite/20_util/tuple/comparison_operators/overloaded.cc:
1886         Disable for C++20 and later.
1887         * testsuite/20_util/tuple/comparison_operators/overloaded2.cc:
1888         Remove dg-error line for target c++20.
1889
1890 2024-05-07  Jonathan Wakely  <jwakely@redhat.com>
1891
1892         * include/backward/auto_ptr.h: Use https for URL in comment.
1893         * include/bits/basic_ios.h: Likewise.
1894         * include/std/iostream: Likewise.
1895
1896 2024-05-07  Jonathan Wakely  <jwakely@redhat.com>
1897
1898         * testsuite/util/testsuite_abi.cc: Update latest versions to
1899         new versions that should be used in future.
1900
1901 2024-05-07  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
1902
1903         * src/Makefile.am [ENABLE_SYMVERS_SUN]
1904         (libstdc++-symbols.ver-sun): Pass $(libstdc___la_OBJECTS),
1905         $(libstdc___la_LIBADD) to make_sunver.pl unmodified.
1906         * src/Makefile.in: Regenerate.
1907
1908 2024-05-07  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
1909
1910         * testsuite/lib/dg-options.exp (add_options_for_net_ts)
1911         <*-*-solaris2*>: Don't link with -lsocket -lnsl.
1912
1913 2024-05-03  Andreas Schwab  <schwab@linux-m68k.org>
1914
1915         * config/abi/post/powerpc-linux-gnu/baseline_symbols.txt: Update.
1916         * config/abi/post/powerpc64-linux-gnu/32/baseline_symbols.txt: Update.
1917
1918 2024-05-01  Jonathan Wakely  <jwakely@redhat.com>
1919
1920         PR libstdc++/114891
1921         * include/std/generator: Check feature test macro before using
1922         is_pointer_interconvertible_v.
1923
1924 2024-04-30  Christophe Lyon  <christophe.lyon@linaro.org>
1925
1926         * testsuite/lib/gdb-test.exp (gdb-test): Fix regexp.  Quote
1927         newlines in logs.
1928
1929 2024-04-29  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
1930
1931         Backported from master:
1932         2024-04-29  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
1933
1934         * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
1935         * config/abi/post/i386-solaris/amd64/baseline_symbols.txt:
1936         Likewise.
1937         * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
1938         * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
1939         Likewise.
1940
1941 2024-04-29  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
1942
1943         Backported from master:
1944         2024-04-29  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
1945
1946         * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
1947         * config/abi/post/i386-solaris/amd64/baseline_symbols.txt:
1948         Likewise.
1949         * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
1950         * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
1951         Likewise.
1952
1953 2024-04-26  Jonathan Wakely  <jwakely@redhat.com>
1954
1955         PR libstdc++/114863
1956         * include/std/format (__formatter_fp::format): Only use
1957         _M_localized for finite values.
1958         * testsuite/std/format/functions/format.cc: Check localized
1959         formatting of NaN and initiny.
1960
1961 2024-04-26  Jonathan Wakely  <jwakely@redhat.com>
1962
1963         * doc/html/manual/status.html: Regenerate.
1964         * doc/xml/manual/status_cxx1998.xml: Adjust whitespace.
1965         * doc/xml/manual/status_cxx2011.xml: Likewise.
1966         * doc/xml/manual/status_cxx2014.xml: Likewise.
1967         * doc/xml/manual/status_cxx2017.xml: Likewise.
1968         * doc/xml/manual/status_cxx2020.xml: Likewise.
1969         * doc/xml/manual/status_cxx2023.xml: Likewise.
1970         * doc/xml/manual/status_cxxtr1.xml: Likewise.
1971         * doc/xml/manual/status_cxxtr24733.xml: Likewise.
1972
1973 2024-04-25  Jonathan Wakely  <jwakely@redhat.com>
1974
1975         * scripts/run_doxygen: Rename man pages for nested types.
1976
1977 2024-04-25  Jonathan Wakely  <jwakely@redhat.com>
1978
1979         * include/std/chrono (tzdb_list): Fix typo in Doxygen comment.
1980
1981 2024-04-25  Jonathan Wakely  <jwakely@redhat.com>
1982
1983         * scripts/run_doxygen: Adjust sed pattern to match '\fR' for
1984         new man output that Doxygen 1.10 generates.
1985
1986 2024-04-25  Jonathan Wakely  <jwakely@redhat.com>
1987
1988         * doc/doxygen/stdheader.cc (init_map): Add missing headers.
1989         * doc/doxygen/user.cfg.in (EXCLUDE): Exclude generated files for
1990         std::format and std::text_encoding.
1991
1992 2024-04-25  Jonathan Wakely  <jwakely@redhat.com>
1993
1994         * include/std/variant: Add comment to #include.
1995
1996 2024-04-22  Matthias Kretz  <m.kretz@gsi.de>
1997
1998         PR libstdc++/114803
1999         * include/experimental/bits/simd_builtin.h
2000         (_SimdBase2::operator __vector_type_t): There is no __builtin()
2001         function in _SimdWrapper, instead use its conversion operator.
2002         * testsuite/experimental/simd/pr114803_vecbuiltin_cvt.cc: New
2003         test.
2004
2005 2024-04-22  Matthias Kretz  <m.kretz@gsi.de>
2006
2007         * include/experimental/bits/simd.h: Ignore -Wnarrowing for
2008         arm_neon.h.
2009         (__int_for_sizeof): Replace tautological compare with checking
2010         for invalid template parameter value.
2011         * include/experimental/bits/simd_builtin.h (__extract_part):
2012         Remove tautological compare by combining two static_assert.
2013
2014 2024-04-22  Jakub Jelinek  <jakub@redhat.com>
2015
2016         * testsuite/17_intro/names.cc (d, f): Undefine on s390*-linux*.
2017         * testsuite/17_intro/headers/c++1998/all_attributes.cc (packed): Don't
2018         define on s390.
2019         * testsuite/17_intro/headers/c++2011/all_attributes.cc (packed):
2020         Likewise.
2021         * testsuite/17_intro/headers/c++2014/all_attributes.cc (packed):
2022         Likewise.
2023         * testsuite/17_intro/headers/c++2017/all_attributes.cc (packed):
2024         Likewise.
2025         * testsuite/17_intro/headers/c++2020/all_attributes.cc (packed):
2026         Likewise.
2027
2028 2024-04-19  Jonathan Wakely  <jwakely@redhat.com>
2029
2030         * include/bits/refwrap.h (operator<=>): Simplify constraints.
2031
2032 2024-04-19  Jonathan Wakely  <jwakely@redhat.com>
2033
2034         PR libstdc++/114770
2035         * src/c++20/tzdb.cc (do_locate_zone): Support links that have
2036         another link as their target.
2037         * testsuite/std/time/tzdb/1.cc: Check that all zones and links
2038         can be found by locate_zone.
2039         * testsuite/std/time/tzdb/links.cc: New test.
2040
2041 2024-04-18  Alexandre Oliva  <oliva@adacore.com>
2042
2043         * testsuite/29_atomics/atomic/compare_exchange_padding.cc:
2044         Disable SRA.
2045
2046 2024-04-18  Alexandre Oliva  <oliva@adacore.com>
2047
2048         * testsuite/20_util/from_chars/8.cc: Skip float128_t testing
2049         on aarch64-vxworks.
2050         * testsuite/20_util/to_chars/float128_c++23.cc: Xfail run on
2051         aarch64-vxworks.
2052
2053 2024-04-18  Alexandre Oliva  <oliva@adacore.com>
2054
2055         * src/c++20/tzdb.cc (__gnu_cxx::zoneinfo_dir_override): Define
2056         on VxWorks non-RTP.
2057
2058 2024-04-17  Jonathan Wakely  <jwakely@redhat.com>
2059
2060         * include/std/ostream (println(ostream&)): Define new overload.
2061         * include/std/print (println(FILE*), println()): Likewise.
2062         * testsuite/27_io/basic_ostream/print/2.cc: New test.
2063         * testsuite/27_io/print/1.cc: Remove unused header.
2064         * testsuite/27_io/print/3.cc: New test.
2065
2066 2024-04-17  Matthias Kretz  <m.kretz@gsi.de>
2067
2068         * include/experimental/bits/numeric_traits.h: Add include guard.
2069
2070 2024-04-17  Matthias Kretz  <m.kretz@gsi.de>
2071
2072         PR libstdc++/114750
2073         * include/experimental/bits/simd_builtin.h
2074         (_SimdImplBuiltin::_S_load, _S_store): Fall back to copying
2075         scalars if the memory type cannot be vectorized for the target.
2076
2077 2024-04-16  Jonathan Wakely  <jwakely@redhat.com>
2078
2079         * config/locale/dragonfly/numeric_members.cc: Fix typos in
2080         comments.
2081         * config/locale/gnu/numeric_members.cc: Likewise.
2082
2083 2024-04-15  Jonathan Wakely  <jwakely@redhat.com>
2084
2085         * doc/xml/manual/abi.xml: Replace "<next>" with "14.1.0".
2086         * doc/html/manual/abi.html: Regenerate.
2087
2088 2024-04-15  Jonathan Wakely  <jwakely@redhat.com>
2089
2090         * include/bits/refwrap.h (reference_wrapper): Add comparison
2091         operators as proposed by P2944R3.
2092         * include/bits/version.def (reference_wrapper): Define.
2093         * include/bits/version.h: Regenerate.
2094         * include/std/functional: Enable feature test macro.
2095         * testsuite/20_util/reference_wrapper/compare.cc: New test.
2096
2097 2024-04-15  Jonathan Wakely  <jwakely@redhat.com>
2098
2099         PR libstdc++/113386
2100         * include/bits/stl_pair.h (operator==, operator<=>): Support
2101         heterogeneous comparisons, as per LWG 3865.
2102         * testsuite/20_util/pair/comparison_operators/lwg3865.cc: New
2103         test.
2104
2105 2024-04-15  Jonathan Wakely  <jwakely@redhat.com>
2106
2107         PR libstdc++/93672
2108         * src/c++98/istream.cc (istream::ignore(streamsize, int_type)):
2109         Treat all negative delimiter values as eof().
2110         * testsuite/27_io/basic_istream/ignore/char/93672.cc: New test.
2111         * testsuite/27_io/basic_istream/ignore/wchar_t/93672.cc: New
2112         test.
2113
2114 2024-04-15  Andreas Schwab  <schwab@suse.de>
2115
2116         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
2117
2118 2024-04-13  H.J. Lu  <hjl.tools@gmail.com>
2119
2120         * config/abi/post/x86_64-linux-gnu/x32/baseline_symbols.txt:
2121         Updated.
2122
2123 2024-04-11  Jakub Jelinek  <jakub@redhat.com>
2124
2125         * doc/xml/manual/abi.xml: Add latest library versions.
2126         * doc/html/manual/abi.html: Regenerate.
2127
2128 2024-04-11  Jakub Jelinek  <jakub@redhat.com>
2129
2130         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
2131         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
2132         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
2133         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
2134         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
2135         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
2136         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
2137         * config/abi/post/powerpc64le-linux-gnu/baseline_symbols.txt: Update.
2138         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
2139
2140 2024-04-11  Jonathan Wakely  <jwakely@redhat.com>
2141
2142         PR libstdc++/114692
2143         * config/abi/pre/gnu.ver (GLIBCXX_3.4.32): Move new exports for
2144         __basic_file::native_handle to ...
2145         (GLIBCXX_3.4.33): ... here. Adjust to not match wchar_t
2146         specialization, which isn't used.
2147         * testsuite/util/testsuite_abi.cc: Add GLIBCXX_3.4.33 and update
2148         latest version check.
2149
2150 2024-04-11  Jakub Jelinek  <jakub@redhat.com>
2151
2152         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
2153         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
2154         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
2155         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
2156         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
2157         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
2158         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
2159         * config/abi/post/powerpc64le-linux-gnu/baseline_symbols.txt: Update.
2160         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
2161
2162 2024-04-10  Jonathan Wakely  <jwakely@redhat.com>
2163
2164         * testsuite/27_io/manipulators/extended/get_time/char/2.cc:
2165         Adjust input string so that it matches %a with or without a
2166         trailing period.
2167         * testsuite/std/time/year_month_day/io.cc: Adjust expected
2168         format for %x in the fr_FR locale.
2169
2170 2024-04-10  Jonathan Wakely  <jwakely@redhat.com>
2171
2172         * src/c++17/fs_ops.cc (remove_all) [__FreeBSD__ || __DragonFly__]:
2173         Check for EMLINK as well as ELOOP.
2174         [__NetBSD__]: Check for EFTYPE as well as ELOOP.
2175
2176 2024-04-09  Jonathan Wakely  <jwakely@redhat.com>
2177
2178         PR libstdc++/114633
2179         * include/bits/chrono_io.h (_Parser::operator()) <'S'>: Use
2180         stream extraction if std::from_chars is not available.
2181
2182 2024-04-08  Jonathan Wakely  <jwakely@redhat.com>
2183
2184         PR libstdc++/114519
2185         * include/bits/unicode.h (_Utf8_view) [!__cpp_char8_t]: Define
2186         using char instead of char8_t.
2187         * testsuite/ext/unicode/view.cc: Use u8""sv literals to create
2188         string views, instead of std::u8string_view.
2189
2190 2024-04-08  Jonathan Wakely  <jwakely@redhat.com>
2191
2192         * testsuite/20_util/integer_comparisons/equal_neg.cc: Use
2193         no-opts selector for errors that depend on -fchar8_t.
2194         * testsuite/20_util/integer_comparisons/greater_equal_neg.cc:
2195         Likewise.
2196         * testsuite/20_util/integer_comparisons/greater_neg.cc:
2197         Likewise.
2198         * testsuite/20_util/integer_comparisons/in_range_neg.cc:
2199         Likewise.
2200         * testsuite/20_util/integer_comparisons/less_equal_neg.cc:
2201         Likewise.
2202         * testsuite/20_util/integer_comparisons/less_neg.cc: Likewise.
2203         * testsuite/20_util/integer_comparisons/not_equal_neg.cc:
2204         Likewise.
2205         * testsuite/21_strings/basic_string/hash/hash_char8_t.cc: Skip
2206         if -fno-char8_t is used.
2207         * testsuite/21_strings/headers/cuchar/functions_std_cxx20.cc:
2208         Likewise.
2209         * testsuite/27_io/basic_ostream/inserters_character/char/deleted.cc:
2210         Likewise.
2211         * testsuite/27_io/basic_ostream/inserters_character/wchar_t/deleted.cc:
2212         Likewise.
2213         * testsuite/27_io/filesystem/path/factory/u8path-depr.cc: Use
2214         char for u8 literal if char8_t is not available.
2215         * testsuite/27_io/headers/iosfwd/synopsis.cc: Check
2216         __cpp_char8_t.
2217         * testsuite/29_atomics/atomic_integral/wait_notify.cc: Likewise.
2218         * testsuite/29_atomics/headers/atomic/types_std_c++20_neg.cc:
2219         Remove check for _GLIBCXX_USE_CHAR8_T.
2220
2221 2024-04-08  Jonathan Wakely  <jwakely@redhat.com>
2222
2223         * testsuite/20_util/from_chars/1_neg.cc: Add char8_t cases,
2224         using a struct of that name if -fno-char8_t is active.
2225         * testsuite/20_util/from_chars/1_c++20_neg.cc: Removed.
2226
2227 2024-04-03  Jonathan Wakely  <jwakely@redhat.com>
2228
2229         PR libstdc++/104606
2230         * include/std/optional (operator<=>(const optional<T>&, const U&)):
2231         Reverse order of three_way_comparable_with template arguments.
2232         * testsuite/20_util/optional/relops/104606.cc: New test.
2233
2234 2024-04-02  Jonathan Wakely  <jwakely@redhat.com>
2235
2236         PR libstdc++/114519
2237         * include/bits/unicode.h (_Utf8_view): Guard with check for
2238         char8_t being enabled.
2239         (__literal_encoding_is_unicode): Guard use of char8_t with check
2240         for it being enabled.
2241         * testsuite/std/format/functions/114519.cc: New test.
2242
2243 2024-04-02  Patrick Palka  <ppalka@redhat.com>
2244
2245         * include/std/ranges (ranges::__detail::_Empty): Rename to ...
2246         (ranges::__detail::_Absent): ... this.  Turn into a template
2247         parameterized by the absent type _Tp and discriminator _Disc.
2248         (ranges::__detail::__maybe_present_t): Add an optional
2249         discriminator parameter.
2250         (slide_view::_M_cached_begin): Pass a discriminator argument to
2251         __maybe_present_t.
2252         (slide_view::_M_cached_end): Likewise.
2253         * testsuite/std/ranges/adaptors/sizeof.cc: Verify the size of
2254         slide_view<V> is 3 instead 4 pointers.
2255
2256 2024-04-02  Jakub Jelinek  <jakub@redhat.com>
2257
2258         * acinclude.m4: Fix duplicated words; file file -> file can.
2259         * configure.host: Fix duplicated words; the the -> the.
2260
2261 2024-03-29  Arsen Arsenović  <arsen@aarsen.me>
2262
2263         * testsuite/24_iterators/range_generators/01.cc: Drop GCC
2264         Runtime Library Exception.
2265         * testsuite/24_iterators/range_generators/02.cc: Drop GCC
2266         Runtime Library Exception.
2267         * testsuite/24_iterators/range_generators/copy.cc: Drop GCC
2268         Runtime Library Exception.
2269         * testsuite/24_iterators/range_generators/except.cc: Drop GCC
2270         Runtime Library Exception.
2271         * testsuite/24_iterators/range_generators/subrange.cc: Drop GCC
2272         Runtime Library Exception.
2273         * testsuite/24_iterators/range_generators/synopsis.cc: Drop GCC
2274         Runtime Library Exception.
2275         * testsuite/24_iterators/range_generators/iter_deref_return.cc:
2276         Drop GCC Runtime Library Exception from the "You should have
2277         received a copy" paragraph.
2278
2279 2024-03-27  Matthias Kretz  <m.kretz@gsi.de>
2280
2281         * include/experimental/bits/simd_x86.h (_S_masked_unary):
2282         Cast inputs < 16 bytes to 16 byte vectors before calling the
2283         right subtraction builtin. Before returning, truncate to the
2284         return vector type.
2285
2286 2024-03-27  Matthias Kretz  <m.kretz@gsi.de>
2287
2288         * include/experimental/bits/simd_x86.h (_S_masked_unary): Call
2289         the 4- and 8-byte variants of __builtin_ia32_subp[ds] without
2290         rounding direction argument.
2291
2292 2024-03-27  Srinivas Yadav Singanaboina  <vasu.srinivasvasu.14@gmail.com>
2293
2294         * include/Makefile.am: Add simd_sve.h.
2295         * include/Makefile.in: Add simd_sve.h.
2296         * include/experimental/bits/simd.h: Add new SveAbi.
2297         * include/experimental/bits/simd_builtin.h: Use
2298         __no_sve_deduce_t to support existing Neon Abi.
2299         * include/experimental/bits/simd_converter.h: Convert
2300         sequentially when sve is available.
2301         * include/experimental/bits/simd_detail.h: Define sve
2302         specific macro.
2303         * include/experimental/bits/simd_math.h: Fallback frexp
2304         to execute sequntially when sve is available, to handle
2305         fixed_size_simd return type that always uses sve.
2306         * include/experimental/simd: Include bits/simd_sve.h.
2307         * testsuite/experimental/simd/tests/bits/main.h: Enable
2308         testing for sve128, sve256, sve512.
2309         * include/experimental/bits/simd_sve.h: New file.
2310
2311 2024-03-26  Arsen Arsenović  <arsen@aarsen.me>
2312
2313         * include/std/generator (generator::_Iterator::operator*): Fix
2314         return type.
2315         * testsuite/24_iterators/range_generators/iter_deref_return.cc:
2316         New test.
2317
2318 2024-03-26  Arsen Arsenović  <arsen@aarsen.me>
2319
2320         * include/std/generator: Fix _V badname.
2321
2322 2024-03-26  Jonathan Wakely  <jwakely@redhat.com>
2323
2324         * testsuite/19_diagnostics/stacktrace/current.cc: Check for
2325         __cpp_lib_stacktrace instead of check for stacktrace ET.
2326         * testsuite/19_diagnostics/stacktrace/entry.cc: Likewise.
2327         * testsuite/19_diagnostics/stacktrace/hash.cc: Likewise.
2328         * testsuite/19_diagnostics/stacktrace/output.cc: Likewise.
2329         * testsuite/19_diagnostics/stacktrace/stacktrace.cc: Likewise.
2330         * testsuite/19_diagnostics/stacktrace/synopsis.cc: Likewise.
2331         * testsuite/19_diagnostics/stacktrace/version.cc: Likewise.
2332         * testsuite/23_containers/vector/debug/assign4_backtrace_neg.cc:
2333         Likewise.
2334         * testsuite/lib/libstdc++.exp (check_effective_target_stacktrace):
2335         Remove.
2336
2337 2024-03-26  Jonathan Wakely  <jwakely@redhat.com>
2338
2339         * testsuite/lib/dg-options.exp (dg-require-cpp-feature-test):
2340         New proc.
2341         * testsuite/lib/libstdc++.exp (check_v3_target_cpp_feature_test):
2342         New proc.
2343         * testsuite/std/text_encoding/cons.cc: Use new directive to skip
2344         the test if the __cpp_lib_text_encoding feature test macro is
2345         not defined.
2346         * testsuite/std/text_encoding/requirements.cc: Likewise.
2347
2348 2024-03-25  Jonathan Wakely  <jwakely@redhat.com>
2349
2350         * testsuite/std/text_encoding/requirements.cc: #undef the
2351         correct macro.
2352
2353 2024-03-23  Jonathan Wakely  <jwakely@redhat.com>
2354
2355         * include/std/format (formatter): Disable specializations that
2356         would allow sequences of narrow characters to be formatted as
2357         wchar_t without conversion, as per LWG 3944.
2358         * testsuite/std/format/formatter/lwg3944.cc: New test.
2359
2360 2024-03-23  Jonathan Wakely  <jwakely@redhat.com>
2361
2362         * include/bits/utility.h (__is_in_place_index_v): New variable
2363         template.
2364         * include/std/variant (__not_in_place_tag): Define in terms of
2365         variable templates not a class template.
2366
2367 2024-03-23  Jonathan Wakely  <jwakely@redhat.com>
2368
2369         PR libstdc++/114400
2370         * include/std/string_view (operator==): Use std::type_identity_t
2371         in C++20 instead of our own __type_identity_t.
2372
2373 2024-03-22  Jonathan Wakely  <jwakely@redhat.com>
2374
2375         PR libstdc++/114401
2376         * include/bits/hashtable.h (_Hashtable::_M_reinsert_node): Call
2377         release() on node handle instead of just zeroing its pointer.
2378         (_Hashtable::_M_reinsert_node_multi): Likewise.
2379         (_Hashtable::_M_merge_unique): Likewise.
2380         (_Hashtable::_M_merge_multi): Likewise.
2381         * include/bits/node_handle.h (_Node_handle_common::release()):
2382         New member function.
2383         (_Node_handle_common::_Optional_alloc::_M_empty): Remove
2384         unnecessary union member.
2385         (_Node_handle_common): Declare _Hashtable as a friend.
2386         * include/bits/stl_tree.h (_Rb_tree::_M_reinsert_node_unique):
2387         Call release() on node handle instead of just zeroing its
2388         pointer.
2389         (_Rb_tree::_M_reinsert_node_equal): Likewise.
2390         (_Rb_tree::_M_reinsert_node_hint_unique): Likewise.
2391         (_Rb_tree::_M_reinsert_node_hint_equal): Likewise.
2392         * testsuite/23_containers/multiset/modifiers/114401.cc: New test.
2393         * testsuite/23_containers/set/modifiers/114401.cc: New test.
2394         * testsuite/23_containers/unordered_multiset/modifiers/114401.cc: New test.
2395         * testsuite/23_containers/unordered_set/modifiers/114401.cc: New test.
2396
2397 2024-03-22  Jonathan Wakely  <jwakely@redhat.com>
2398
2399         PR libstdc++/113841
2400         * include/bits/allocator.h (allocator<cv T>): Add default
2401         constructor to partial specializations for cv-qualified types.
2402         * include/bits/stl_vector.h (_Vector_impl::_Vector_impl()):
2403         Constrain so that it's only present if the allocator is default
2404         constructible.
2405         * include/bits/stl_bvector.h (_Bvector_impl::_Bvector_impl()):
2406         Likewise.
2407         * testsuite/23_containers/vector/cons/113841.cc: New test.
2408
2409 2024-03-22  Jonathan Wakely  <jwakely@redhat.com>
2410
2411         * include/bits/stl_construct.h (destroy_at, construct_at): Guard
2412         with feature test macros instead of just __cplusplus.
2413
2414 2024-03-22  Jonathan Wakely  <jwakely@redhat.com>
2415
2416         * include/bits/version.def (generator, tuple_like): Move earlier
2417         in the file.
2418         * include/bits/version.h: Regenerate.
2419
2420 2024-03-22  Jonathan Wakely  <jwakely@redhat.com>
2421
2422         PR libstdc++/114394
2423         * include/std/functional (bind): Use __invoke_result_t instead
2424         of result_of::type.
2425         * include/std/type_traits (__invoke_result_t): New alias
2426         template.
2427         * testsuite/20_util/bind/ref_neg.cc: Adjust prune pattern.
2428
2429 2024-03-20  François Dumont  <fdumont@gcc.gnu.org>
2430
2431         * include/bits/version.def (null_iterators): Remove extra_cond.
2432         * include/bits/version.h: Regenerate.
2433
2434 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
2435
2436         PR libstdc++/114359
2437         * include/bits/random.tcc (binomial_distribution::param_type):
2438         Ensure arithmetic is done as type double.
2439         * testsuite/26_numerics/random/binomial_distribution/114359.cc: New test.
2440
2441 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
2442
2443         PR libstdc++/101228
2444         * include/pstl/parallel_backend_tbb.h (TBB_SUPPRESS_DEPRECATED_MESSAGES):
2445         Define before including <tbb/task.h> then undef afterwards.
2446
2447 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
2448
2449         * include/Makefile.am [MAINTAINER_MODE]: Add target to
2450         automatically update <bits/version.h>.
2451         * include/Makefile.in: Regenerate.
2452
2453 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
2454
2455         * doc/xml/manual/build_hacking.xml: Document generated files.
2456         Update list of convenience libraries and sub-directories under
2457         the src directory.
2458         * doc/html/*: Regenerate.
2459
2460 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
2461
2462         * include/bits/text_encoding-data.h: Regenerate.
2463         * include/bits/unicode-data.h: Regenerate.
2464         * scripts/gen_text_encoding_data.py: Fix header of generated
2465         file to name the correct script.
2466
2467 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
2468
2469         * testsuite/util/pstl/test_utils.h: Fix typos in comments.
2470
2471 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
2472
2473         PR libstdc++/114367
2474         * include/bits/stl_bvector.h (_M_allocate): Use allocator's
2475         construct function to begin lifetime of words.
2476
2477 2024-03-19  Iain Sandoe  <iain@sandoe.co.uk>
2478
2479         * testsuite/lib/dg-options.exp (atomic_link_flags): Emit a -B
2480         option for the path to the uninstalled libatomic.
2481
2482 2024-03-19  Iain Sandoe  <iain@sandoe.co.uk>
2483
2484         * testsuite/lib/libstdc++.exp (v3_target_compile): Instead of
2485         /dev/null, use a temporary file for test executables on Darwin.
2486
2487 2024-03-18  François Dumont  <fdumont@gcc.gnu.org>
2488
2489         * include/debug/safe_iterator.tcc (_Safe_iterator<>::_M_can_advance):
2490         Accept 0 offset advance on value-initialized iterator.
2491         * testsuite/23_containers/vector/debug/n3644.cc: New test case.
2492
2493 2024-03-18  François Dumont  <fdumont@gcc.gnu.org>
2494
2495         * include/debug/safe_local_iterator.tcc
2496         (_Safe_local_iterator::_M_valid_range): Add _M_value_initialized and
2497         _M_singular checks.
2498         * testsuite/23_containers/unordered_set/debug/114316.cc: New test case.
2499
2500 2024-03-17  François Dumont  <fdumont@gcc.gnu.org>
2501
2502         PR libstdc++/114316
2503         * include/debug/safe_iterator.tcc (_Safe_iterator<>::_M_valid_range):
2504         First check if both iterators are value-initialized before checking if
2505         singular.
2506         * testsuite/23_containers/set/debug/114316.cc: New test case.
2507         * testsuite/23_containers/vector/debug/114316.cc: New test case.
2508
2509 2024-03-14  Jonathan Wakely  <jwakely@redhat.com>
2510
2511         PR libstdc++/114325
2512         * include/std/format (_Scanner::_M_scan): Pass correct length to
2513         __to_chars_10_impl.
2514         * testsuite/std/format/functions/format.cc: Check negative
2515         integers with empty format-spec.
2516
2517 2024-03-14  Jonathan Wakely  <jwakely@redhat.com>
2518
2519         * include/bits/stl_algo.h (find_end, all_of, none_of, any_of)
2520         (find_if_not, is_partitioned, partition_point, remove)
2521         (remove_if, unique, lower_bound, upper_bound, equal_range)
2522         (binary_search, includes, is_sorted, is_sorted_until, minmax)
2523         (minmax_element, is_permutation, clamp, find_if, find_first_of)
2524         (adjacent_find, count, count_if, search, search_n, min_element)
2525         (max_element): Add nodiscard attribute.
2526         * include/bits/stl_algobase.h (min, max, lower_bound, equal)
2527         (lexicographical_compare, lexicographical_compare_three_way)
2528         (mismatch): Likewise.
2529         * include/bits/stl_heap.h (is_heap, is_heap_until): Likewise.
2530         * testsuite/25_algorithms/equal/debug/1_neg.cc: Add dg-warning.
2531         * testsuite/25_algorithms/equal/debug/2_neg.cc: Likewise.
2532         * testsuite/25_algorithms/equal/debug/3_neg.cc: Likewise.
2533         * testsuite/25_algorithms/find_first_of/concept_check_1.cc:
2534         Likewise.
2535         * testsuite/25_algorithms/is_permutation/2.cc: Likewise.
2536         * testsuite/25_algorithms/lexicographical_compare/71545.cc:
2537         Likewise.
2538         * testsuite/25_algorithms/lower_bound/33613.cc: Likewise.
2539         * testsuite/25_algorithms/lower_bound/debug/irreflexive.cc:
2540         Likewise.
2541         * testsuite/25_algorithms/lower_bound/debug/partitioned_neg.cc:
2542         Likewise.
2543         * testsuite/25_algorithms/lower_bound/debug/partitioned_pred_neg.cc:
2544         Likewise.
2545         * testsuite/25_algorithms/minmax/3.cc: Likewise.
2546         * testsuite/25_algorithms/search/78346.cc: Likewise.
2547         * testsuite/25_algorithms/search_n/58358.cc: Likewise.
2548         * testsuite/25_algorithms/unique/1.cc: Likewise.
2549         * testsuite/25_algorithms/unique/11480.cc: Likewise.
2550         * testsuite/25_algorithms/upper_bound/33613.cc: Likewise.
2551         * testsuite/25_algorithms/upper_bound/debug/partitioned_neg.cc:
2552         Likewise.
2553         * testsuite/25_algorithms/upper_bound/debug/partitioned_pred_neg.cc:
2554         Likewise.
2555         * testsuite/ext/concept_checks.cc: Likewise.
2556         * testsuite/ext/is_heap/47709.cc: Likewise.
2557         * testsuite/ext/is_sorted/cxx0x.cc: Likewise.
2558
2559 2024-03-14  xndcn  <xndchn@gmail.com>
2560
2561         * include/bits/atomic_base.h (__atomic_float::__atomic_float(Fp)):
2562         Clear padding.
2563         * testsuite/29_atomics/atomic_float/compare_exchange_padding.cc:
2564         New test.
2565
2566 2024-03-14  Jonathan Wakely  <jwakely@redhat.com>
2567
2568         PR libstdc++/66146
2569         * doc/xml/manual/status_cxx2011.xml: Remove mention of Linux in
2570         note about std::call_once.
2571         * doc/xml/manual/status_cxx2014.xml: Likewise.
2572         * doc/xml/manual/status_cxx2017.xml: Likewise.
2573         * doc/html/manual/status.html: Regenerate.
2574
2575 2024-03-14  Jonathan Wakely  <jwakely@redhat.com>
2576
2577         * doc/xml/manual/status_cxx2023.xml: Update C++23 status table.
2578         * doc/html/manual/status.html: Regenerate.
2579         * include/bits/version.def: Fix typo in comment.
2580
2581 2024-03-13  Jonathan Wakely  <jwakely@redhat.com>
2582
2583         * testsuite/libstdc++-prettyprinters/cxx11.cc: Move custom_cat
2584         to namespace scope.
2585
2586 2024-03-13  Jonathan Wakely  <jwakely@redhat.com>
2587
2588         * doc/xml/manual/debug.xml: Improve docs on debug builds and
2589         using ASan. Mention _GLIBCXX_ASSERTIONS. Reorder sections to put
2590         the most relevant ones first.
2591         * doc/xml/manual/using.xml: Add comma.
2592         * doc/html/*: Regenerate.
2593
2594 2024-03-13  Jonathan Wakely  <jwakely@redhat.com>
2595
2596         * doc/xml/manual/debug.xml: Document that concept checking might
2597         be removed in future.
2598         * doc/xml/manual/extensions.xml: Likewise.
2599
2600 2024-03-09  Jonathan Wakely  <jwakely@redhat.com>
2601
2602         PR libstdc++/114240
2603         * include/bits/chrono_io.h (_Parser::operator()): Assume
2604         hours(0) for a time_point, so that a time is not required
2605         to be present.
2606         * testsuite/std/time/parse/114240.cc: New test.
2607
2608 2024-03-09  Jonathan Wakely  <jwakely@redhat.com>
2609
2610         PR libstdc++/114279
2611         * include/bits/chrono_io.h (_Parser::_M_is_leap_second): New
2612         data member.
2613         (_Parser::_M_reserved): Reserve padding bits for future use.
2614         (_Parser::operator()): Set _M_is_leap_second if %S reads 60s.
2615         (from_stream): Only allow _M_is_leap_second for utc_time and
2616         local_time. Adjust arithmetic for utc_time so that leap seconds
2617         are preserved. Use time_point_cast to convert to a possibly
2618         lower-precision result type.
2619         * testsuite/std/time/parse.cc: Move to ...
2620         * testsuite/std/time/parse/parse.cc: ... here.
2621         * testsuite/std/time/parse/114279.cc: New test.
2622
2623 2024-03-07  Jonathan Wakely  <jwakely@redhat.com>
2624
2625         * include/bits/chrono_io.h (_Parser::operator()): Use
2626         std::from_chars to parse fractional seconds.
2627
2628 2024-03-07  Jonathan Wakely  <jwakely@redhat.com>
2629
2630         PR libstdc++/114244
2631         * include/bits/chrono_io.h (_Parser::operator()): Remove
2632         redundant uses of duration_cast. Use chrono::round to convert
2633         long double value to durations with integer representations.
2634         Check represenation type when deciding whether to skip parsing
2635         fractional seconds.
2636         * testsuite/20_util/duration/114244.cc: New test.
2637         * testsuite/20_util/duration/io.cc: Check that a floating-point
2638         duration with ratio<1> precision can be parsed.
2639
2640 2024-03-07  Jonathan Wakely  <jwakely@redhat.com>
2641
2642         PR libstdc++/114103
2643         * include/bits/version.def (atomic_lock_free_type_aliases): Add
2644         extra_cond to check for at least one always-lock-free type.
2645         * include/bits/version.h: Regenerate.
2646         * include/std/atomic (atomic_signed_lock_free)
2647         (atomic_unsigned_lock_free): Only use always-lock-free types.
2648         * src/c++20/tzdb.cc (time_zone::_Impl::RulesCounter): Don't use
2649         atomic counter if lock-free aliases aren't available.
2650         * testsuite/29_atomics/atomic/lock_free_aliases.cc: XFAIL for
2651         targets without lock-free word-size compare_exchange.
2652
2653 2024-03-07  Jonathan Wakely  <jwakely@redhat.com>
2654
2655         * include/std/chrono (__get_leap_second_info): Update expiry
2656         time for hardcoded list of leap seconds.
2657         * testsuite/std/time/tzdb/leap_seconds.cc: Update comment.
2658
2659 2024-03-07  Jonathan Wakely  <jwakely@redhat.com>
2660
2661         * testsuite/23_containers/deque/allocator/default_init.cc: Use
2662         std::memset instead of __builtin_memset.
2663         * testsuite/23_containers/forward_list/allocator/default_init.cc:
2664         Likewise.
2665         * testsuite/23_containers/list/allocator/default_init.cc:
2666         Likewise.
2667         * testsuite/23_containers/map/allocator/default_init.cc:
2668         Likewise.
2669         * testsuite/23_containers/set/allocator/default_init.cc:
2670         Likewise.
2671         * testsuite/23_containers/unordered_map/allocator/default_init.cc:
2672         Likewise.
2673         * testsuite/23_containers/unordered_set/allocator/default_init.cc:
2674         Likewise.
2675         * testsuite/23_containers/vector/allocator/default_init.cc:
2676         Likewise.
2677         * testsuite/23_containers/vector/bool/allocator/default_init.cc:
2678         Likewise.
2679         * testsuite/29_atomics/atomic/compare_exchange_padding.cc:
2680         Likewise.
2681         * testsuite/util/atomic/wait_notify_util.h: Likewise.
2682
2683 2024-03-07  Jonathan Wakely  <jwakely@redhat.com>
2684
2685         * include/std/format (_Arg_store::_S_make_elt): Add two
2686         static_assert checks to give more user-friendly error messages.
2687         * testsuite/lib/prune.exp (libstdc++-dg-prune): Prune another
2688         form of "in requirements with" note.
2689         * testsuite/std/format/arguments/args_neg.cc: Check for
2690         user-friendly diagnostics for non-formattable types.
2691         * testsuite/std/format/string_neg.cc: Likewise.
2692
2693 2024-03-04  Jonathan Wakely  <jwakely@redhat.com>
2694
2695         PR libstdc++/114147
2696         * include/std/tuple (tuple::tuple(allocator_arg_t, const Alloc&)):
2697         Add missing overload of allocator-extended default constructor.
2698         (tuple<T1,T2>::tuple(allocator_arg_t, const Alloc&)): Likewise.
2699         * testsuite/20_util/tuple/cons/114147.cc: New test.
2700
2701 2024-02-29  Jonathan Wakely  <jwakely@redhat.com>
2702
2703         * include/std/format (basic_format_arg::handle::__maybe_const_t):
2704         Fix condition to check if const type is formattable.
2705         (basic_format_arg::handle::handle(T&)): Remove redundant
2706         static_assert.
2707         * testsuite/std/format/formatter/basic.cc: New test.
2708
2709 2024-02-29  Jonathan Wakely  <jwakely@redhat.com>
2710
2711         PR libstdc++/113960
2712         * include/bits/stl_algobase.h (__is_byte_iter): Replace with ...
2713         (__memcmp_ordered_with): New concept.
2714         (lexicographical_compare_three_way): Use __memcmp_ordered_with
2715         instead of __is_byte_iter. Use correct length for memcmp.
2716         * testsuite/25_algorithms/lexicographical_compare_three_way/113960.cc:
2717         New test.
2718
2719 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
2720
2721         PR libstdc++/114152
2722         * include/experimental/scope (scope_exit scope_fail): Make
2723         destructor unconditionally noexcept.
2724         (scope_sucess): Fix noexcept-specifier.
2725         * testsuite/experimental/scopeguard/114152.cc: New test.
2726
2727 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
2728
2729         * doc/xml/manual/appendix_contributing.xml: Change URLs to use
2730         https.
2731         * doc/html/manual/*: Regenerate.
2732
2733 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
2734
2735         * doc/xml/manual/appendix_contributing.xml: Replace outdated
2736         info on ChangeLog entries.
2737         * doc/html/manual/appendix_contributing.html: Regenerate.
2738
2739 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
2740
2741         * include/bits/stl_bvector.h (vector<bool, A>::at): Add
2742         nodiscard.
2743         * include/bits/stl_vector.h (vector<T, A>::at): Likewise.
2744         (operator==, operator<=>, operator<, operator!=, operator>)
2745         (operator<=, operator>=): Likewise.
2746         * include/debug/vector (operator==, operator<=>, operator<)
2747         (operator!=, operator>, operator<=, operator>=): Likewise.
2748         * testsuite/23_containers/vector/nodiscard.cc: New test.
2749
2750 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
2751
2752         * include/bits/atomic_base.h (operator|, operator&): Add
2753         noexcept.
2754         * include/bits/fs_fwd.h (operator&, operator|, operator^)
2755         (operator~): Add nodiscard to overloads for copy_options, perms,
2756         perm_options, and directory_options.
2757         * include/bits/ios_base.h (operator&, operator|, operator^)
2758         (operator~): Add nodiscard and noexcept to overloads for
2759         _Ios_Fmtflags, _Ios_Openmode, and _Ios_Iostate.
2760         (operator|=, operator&=, operator^=): Add constexpr for C++14.
2761         * include/bits/regex_constants.h (operator&, operator|, operator^)
2762         (operator~): Add nodiscard and noexcept to overloads for
2763         syntax_option_type and match_flag_type.
2764         (operator|=, operator&=, operator^=): Add noexcept.
2765         * include/std/charconv (operator&, operator|, operator^)
2766         (operator~): Add nodiscard to overloads for chars_format.
2767         * include/std/future (operator&, operator|, operator^)
2768         (operator~): Add nodiscard for overloads for launch.
2769         (operator&=, operator|=, operator^=): Add constexpr for C++14.
2770         * include/experimental/bits/fs_fwd.h  (operator&, operator|)
2771         (operator^, operator~): Add nodiscard to overloads for
2772         copy_options, perms, and directory_options.
2773         * testsuite/27_io/ios_base/types/fmtflags/bitmask_operators.cc:
2774         Add dg-warning for nodiscard warnings.
2775         * testsuite/27_io/ios_base/types/iostate/bitmask_operators.cc:
2776         Likewise.
2777         * testsuite/27_io/ios_base/types/openmode/bitmask_operators.cc:
2778         Likewise.
2779         * testsuite/27_io/filesystem/operations/bitmask_types.cc:
2780         New test.
2781
2782 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
2783
2784         * testsuite/27_io/basic_ostream/print/1.cc: Check error
2785         handling.
2786         * testsuite/27_io/print/1.cc: Likewise.
2787
2788 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
2789
2790         * include/std/ostream (vprint_unicode) [__CYGWIN__]: Use POSIX
2791         code path for Cygwin instead of Windows.
2792         * include/std/print (vprint_unicode) [__CYGWIN__]: Likewise.
2793         * testsuite/27_io/basic_ostream/print/1.cc: Only add -lstdc++exp
2794         for *-*-mingw* targets.
2795         * testsuite/27_io/print/1.cc: Likewise.
2796
2797 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
2798
2799         * include/bits/alloc_traits.h: Include <bits/stl_iterator.h> for
2800         __make_move_if_noexcept_iterator.
2801
2802 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
2803
2804         * include/std/stacktrace: Add nodiscard attribute to all
2805         functions without side effects.
2806
2807 2024-02-20  François Dumont  <fdumont@gcc.gnu.org>
2808
2809         * include/bits/stl_algobase.h (std::__niter_wrap): Add a call to
2810         std::__niter_base on res iterator.
2811
2812 2024-02-19  Iain Sandoe  <iain@sandoe.co.uk>
2813             Jonathan Wakely  <jwakely@redhat.com>
2814
2815         PR target/112397
2816         * configure: Regenerate.
2817         * configure.ac: Detect if we are building for Darwin.
2818         * libsupc++/Makefile.am: If we are building for Darwin, then
2819         suppress hot/cold partitioning for the array allocators.
2820         * libsupc++/Makefile.in: Regenerated.
2821
2822 2024-02-17  François Dumont  <fdumont@gcc.gnu.org>
2823
2824         * include/bits/stl_algobase.h (std::__niter_base): Redefine the overload
2825         definitions for __gnu_debug::_Safe_iterator.
2826         * include/debug/safe_iterator.tcc (std::__niter_base): Adapt declarations.
2827
2828 2024-02-16  Jonathan Wakely  <jwakely@redhat.com>
2829
2830         PR libstdc++/87744
2831         PR libstdc++/113961
2832         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
2833         line number.
2834
2835 2024-02-16  Jonathan Wakely  <jwakely@redhat.com>
2836
2837         PR libstdc++/87744
2838         PR libstdc++/113931
2839         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
2840         line number.
2841
2842 2024-02-16  Jonathan Wakely  <jwakely@redhat.com>
2843
2844         * doc/xml/manual/debug_mode.xml: Update docs for backtraces.
2845         * doc/html/manual/debug_mode_using.html: Regenerate.
2846
2847 2024-02-16  Jonathan Wakely  <jwakely@redhat.com>
2848
2849         * doc/xml/manual/test.xml: Fix spelling of <envar> elements.
2850         * doc/html/manual/test.html: Regenerate.
2851
2852 2024-02-15  Jonathan Wakely  <jwakely@redhat.com>
2853
2854         PR libstdc++/113806
2855         * include/std/bitset (bitset::operator>>=): Remove redundant
2856         call to _M_do_sanitize.
2857
2858 2024-02-15  Jonathan Wakely  <jwakely@redhat.com>
2859
2860         PR libstdc++/113807
2861         * include/std/bitset (bitset::set()): Use memset instead of a
2862         loop over the individual words.
2863
2864 2024-02-15  Jonathan Wakely  <jwakely@redhat.com>
2865
2866         PR libstdc++/113811
2867         * include/bits/stl_algo.h (__rotate): Use unsigned values for
2868         division.
2869
2870 2024-02-15  Jonathan Wakely  <jwakely@redhat.com>
2871
2872         PR libstdc++/99117
2873         * include/std/valarray (valarray::operator=(const _Expr&)):
2874         Use loop to copy instead of __valarray_copy with _Array.
2875         * testsuite/26_numerics/valarray/99117.cc: New test.
2876
2877 2024-02-15  Jonathan Wakely  <jwakely@redhat.com>
2878
2879         * src/c++20/tzdata.zi: Import new file from 2024a release.
2880         * src/c++20/tzdb.cc (tzdb_list::_Node::_S_read_leap_seconds)
2881         Update expiry date for leap seconds list.
2882
2883 2024-02-15  Jonathan Wakely  <jwakely@redhat.com>
2884
2885         PR libstdc++/87744
2886         * include/bits/random.h [!__SIZEOF_INT128__] (_Select_uint_least_t):
2887         Define specialization for 64-bit generators with
2888         non-power-of-two modulus and large constants.
2889         (__mod): Use if constexpr unconditionally.
2890         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
2891         line number.
2892         * testsuite/26_numerics/random/linear_congruential_engine/87744.cc:
2893         New test.
2894
2895 2024-02-14  Gerald Pfeifer  <gerald@pfeifer.com>
2896
2897         * doc/xml/manual/status_cxx2023.xml: Fix C++ item p2442 to be
2898         version 1.
2899         * doc/html/manual/status.html: Regenerate.
2900
2901 2024-02-12  Paul Keir  <paul.keir@uws.ac.uk>
2902
2903         PR libstdc++/113294
2904         * include/bits/basic_string.h (basic_string::operator=): Use
2905         _M_use_local_data() instead of _M_local_buf on the moved-from
2906         string.
2907         * testsuite/21_strings/basic_string/modifiers/constexpr.cc
2908         (test_move): New test.
2909
2910 2024-02-09  Ken Matsui  <kmatsui@gcc.gnu.org>
2911
2912         * include/bits/c++config (_GLIBCXX_HAVE_BUILTIN_IS_SAME):
2913         Removed.
2914         * include/std/type_traits (is_same): Use
2915         _GLIBCXX_USE_BUILTIN_TRAIT instead of
2916         _GLIBCXX_HAVE_BUILTIN_IS_SAME.
2917         (is_same_v): Likewise.
2918
2919 2024-02-08  Jonathan Wakely  <jwakely@redhat.com>
2920
2921         * include/bits/shared_ptr_atomic.h: Fix typo in comment.
2922
2923 2024-02-08  Jonathan Wakely  <jwakely@redhat.com>
2924
2925         PR libstdc++/100147
2926         * include/bits/gslice.h (operator=): Add comment about lack of
2927         self-assignment check.
2928
2929 2024-02-08  Jonathan Wakely  <jwakely@redhat.com>
2930
2931         * include/tr2/type_traits (bases, direct_bases): Use
2932         __has_builtin to check if required built-ins are supported.
2933
2934 2024-02-07  Patrick Palka  <ppalka@redhat.com>
2935
2936         PR testsuite/113710
2937         PR c++/113814
2938         * include/bits/stl_pair.h (tuple_element): Add forward
2939         declaration of the partial specialization for tuple.
2940
2941 2024-02-06  Torbjörn SVENSSON  <torbjorn.svensson@foss.st.com>
2942
2943         * testsuite/lib/libstdc++.exp: Use "nul" for Windows, "/dev/null"
2944         for other environments.
2945
2946 2024-02-04  Jonathan Wakely  <jwakely@redhat.com>
2947
2948         * include/std/format (__format::_Spec::_M_reserved): Define new
2949         bit-field members to reserve padding bits for future extensions.
2950
2951 2024-02-04  Jonathan Wakely  <jwakely@redhat.com>
2952
2953         * src/experimental/Makefile.am: Use libstdc++fsconvenience.a
2954         instead of libstdc++fs.a.
2955         * src/experimental/Makefile.in: Regenerate.
2956         * src/filesystem/Makefile.am: Build libstdc++fsconvenience.a as
2957         well.
2958         * src/filesystem/Makefile.in: Regenerate.
2959
2960 2024-02-04  Jonathan Wakely  <jwakely@redhat.com>
2961
2962         * include/bits/text_encoding-data.h: Regenerate.
2963         * include/bits/unicode-data.h: Regenerate.
2964         * scripts/gen_text_encoding_data.py: Add copyright and license
2965         text to the output.
2966
2967 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
2968
2969         PR libstdc++/113335
2970         * include/bits/std_function.h (__function_guide_helper): Add
2971         partial specialization for explicit object member functions, as
2972         per LWG 3617.
2973         * testsuite/20_util/function/cons/deduction_c++23.cc: Check
2974         explicit object member functions.
2975         * testsuite/30_threads/packaged_task/cons/deduction_c++23.cc:
2976         Likewise.
2977
2978 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
2979
2980         * testsuite/17_intro/names.cc [_AIX]: Undefine "u".
2981
2982 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
2983
2984         * include/experimental/internet (network_v6::network): Define.
2985         (network_v6::hosts): Finish implementing.
2986         (network_v6::to_string): Do not concatenate std::string to
2987         arbitrary std::basic_string specialization.
2988         * testsuite/experimental/net/internet/network/v6/cons.cc: New
2989         test.
2990
2991 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
2992
2993         PR libstdc++/90276
2994         * testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: Fix
2995         comparison function to use less-than instead of equality.
2996
2997 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
2998
2999         PR libstdc++/90276
3000         * testsuite/util/pstl/test_utils.h (reverse_invoker): Do not use
3001         perfect forwarding for iterator arguments.
3002
3003 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
3004
3005         * include/std/string_view (basic_string_view(R&&)): Remove
3006         constraint that traits_type must be the same, as per LWG 3857.
3007         * testsuite/21_strings/basic_string_view/cons/char/range_c++20.cc:
3008         Explicit conversion between different specializations should be
3009         allowed.
3010         * testsuite/21_strings/basic_string_view/cons/wchar_t/range_c++20.cc:
3011         Likewise.
3012
3013 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
3014
3015         * include/std/syncstream (basic_osyncstream::operator=): Remove
3016         noexcept, as per LWG 3867.
3017
3018 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
3019
3020         * include/std/generator (promise_type::yield_value): Remove
3021         noexcept from fourth overload, as per LWG 3894.
3022
3023 2024-02-01  Patrick Palka  <ppalka@redhat.com>
3024
3025         PR libstdc++/113309
3026         PR libstdc++/109203
3027         * include/bits/ranges_util.h (__detail::__pair_like): Don't
3028         define in C++23 mode.
3029         (__detail::__pair_like_convertible_from): Adjust as per P2165R4.
3030         (__detail::__is_subrange<subrange>): Moved from <ranges>.
3031         (__detail::__is_tuple_like_v<subrange>): Likewise.
3032         * include/bits/stl_iterator.h: Include <bits/utility.h> for
3033         C++23.
3034         (__different_from): Move to <concepts>.
3035         (__iter_key_t): Adjust for C++23 as per P2165R4.
3036         (__iter_val_t): Likewise.
3037         * include/bits/stl_pair.h (pair, array): Forward declare.
3038         (get): Forward declare all overloads relevant to P2165R4
3039         tuple-like constructors.
3040         (__is_tuple_v): Define for C++23.
3041         (__is_tuple_like_v): Define for C++23.
3042         (__tuple_like): Define for C++23 as per P2165R4.
3043         (__pair_like): Define for C++23 as per P2165R4.
3044         (__eligibile_tuple_like): Define for C++23.
3045         (__eligibile_pair_like): Define for C++23.
3046         (pair::_S_constructible_from_pair_like): Define for C++23.
3047         (pair::_S_convertible_from_pair_like): Define for C++23.
3048         (pair::_S_dangles_from_pair_like): Define for C++23.
3049         (pair::pair): Define overloads taking a tuple-like type for
3050         C++23 as per P2165R4.
3051         (pair::_S_assignable_from_tuple_like): Define for C++23.
3052         (pair::_S_const_assignable_from_tuple_like): Define for C++23.
3053         (pair::operator=): Define overloads taking a tuple-like type for
3054         C++23 as per P2165R4.
3055         * include/bits/utility.h (ranges::__detail::__is_subrange):
3056         Moved from <ranges>.
3057         * include/bits/version.def (tuple_like): Define for C++23.
3058         * include/bits/version.h: Regenerate.
3059         * include/std/concepts (__different_from): Moved from
3060         <bits/stl_iterator.h>.
3061         (ranges::__swap::__adl_swap): Clarify which __detail namespace.
3062         * include/std/map (__cpp_lib_tuple_like): Define C++23.
3063         * include/std/ranges (__detail::__is_subrange): Moved to
3064         <bits/utility.h>.
3065         (__detail::__is_subrange<subrange>): Moved to <bits/ranges_util.h>
3066         (__detail::__has_tuple_element): Adjust for C++23 as per P2165R4.
3067         (__detail::__tuple_or_pair): Remove as per P2165R4.  Replace all
3068         uses with plain tuple as per P2165R4.
3069         * include/std/tuple (__cpp_lib_tuple_like): Define for C++23.
3070         (__tuple_like_tag_t): Define for C++23.
3071         (__tuple_cmp): Forward declare for C++23.
3072         (_Tuple_impl::_Tuple_impl): Define overloads taking
3073         __tuple_like_tag_t and a tuple-like type for C++23.
3074         (_Tuple_impl::_M_assign): Likewise.
3075         (tuple::__constructible_from_tuple_like): Define for C++23.
3076         (tuple::__convertible_from_tuple_like): Define for C++23.
3077         (tuple::__dangles_from_tuple_like): Define for C++23.
3078         (tuple::tuple): Define overloads taking a tuple-like type for
3079         C++23 as per P2165R4.
3080         (tuple::__assignable_from_tuple_like): Define for C++23.
3081         (tuple::__const_assignable_from_tuple_like): Define for C++23.
3082         (tuple::operator=): Define overloads taking a tuple-like type
3083         for C++23 as per P2165R4.
3084         (tuple::__tuple_like_common_comparison_category): Define for C++23.
3085         (tuple::operator<=>): Define overload taking a tuple-like type
3086         for C++23 as per P2165R4.
3087         (array, get): Forward declarations moved to <bits/stl_pair.h>.
3088         (tuple_cat): Constrain with __tuple_like for C++23 as per P2165R4.
3089         (apply): Likewise.
3090         (make_from_tuple): Likewise.
3091         (__tuple_like_common_reference): Define for C++23.
3092         (basic_common_reference): Adjust as per P2165R4.
3093         (__tuple_like_common_type): Define for C++23.
3094         (common_type): Adjust as per P2165R4.
3095         * include/std/unordered_map (__cpp_lib_tuple_like): Define for
3096         C++23.
3097         * include/std/utility (__cpp_lib_tuple_like): Define for C++23.
3098         * testsuite/std/ranges/zip/1.cc (test01): Adjust to handle pair
3099         and 2-tuple interchangeably.
3100         (test05): New test.
3101         * testsuite/20_util/pair/p2165r4.cc: New test.
3102         * testsuite/20_util/tuple/p2165r4.cc: New test.
3103
3104 2024-02-01  Patrick Palka  <ppalka@redhat.com>
3105
3106         * include/bits/stl_pair.h (pair::_S_const_assignable): Define,
3107         factored out from ...
3108         (pair::operator=): ... the constraints of the const overloads.
3109
3110 2024-02-01  Jonathan Wakely  <jwakely@redhat.com>
3111
3112         * include/bits/version.tpl: Do not use def-file-line for each
3113         macro being defined.
3114         * include/bits/version.h: Regenerate.
3115
3116 2024-02-01  Jonathan Wakely  <jwakely@redhat.com>
3117
3118         * testsuite/25_algorithms/copy/debug/constexpr_neg.cc: Adjust
3119         dg-error pattern.
3120         * testsuite/25_algorithms/copy_backward/debug/constexpr_neg.cc:
3121         Likewise.
3122         * testsuite/25_algorithms/equal/debug/constexpr_neg.cc:
3123         Likewise.
3124         * testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_neg.cc:
3125         Likewise.
3126         * testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_pred_neg.cc:
3127         Likewise.
3128         * testsuite/25_algorithms/lower_bound/debug/constexpr_valid_range_neg.cc:
3129         Likewise.
3130         * testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_neg.cc:
3131         Likewise.
3132         * testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_pred_neg.cc:
3133         Likewise.
3134         * testsuite/25_algorithms/upper_bound/debug/constexpr_valid_range_neg.cc:
3135         Likewise.
3136
3137 2024-02-01  Jonathan Wakely  <jwakely@redhat.com>
3138
3139         * include/experimental/internet (network_v4::to_string()):
3140         Remove lambda and use of resize_and_overwrite.
3141
3142 2024-01-31  Jonathan Wakely  <jwakely@redhat.com>
3143
3144         * acinclude.m4 (GLIBCXX_CHECK_TEXT_ENCODING): Use <xlocale.h> if
3145         needed for newlocale.
3146         * configure: Regenerate.
3147         * src/c++26/text_encoding.cc: Use <xlocale.h>.
3148
3149 2024-01-31  Jonathan Wakely  <jwakely@redhat.com>
3150             Ewan Higgs  <ewan.higgs@gmail.com>
3151
3152         * include/bits/text_encoding-data.h: Regenerate.
3153         * scripts/gen_text_encoding_data.py: Add extra_aliases dict
3154         containing "ASCII".
3155         * testsuite/std/text_encoding/cons.cc: Check "ascii" is known.
3156
3157 2024-01-31  Jonathan Wakely  <jwakely@redhat.com>
3158
3159         * doc/xml/manual/using.xml: Update tables of supported headers.
3160         * doc/html/*: Regenerate.
3161
3162 2024-01-31  Jonathan Wakely  <jwakely@redhat.com>
3163
3164         * include/std/bitset (_Base_bitset::_M_do_to_ullong): Avoid
3165         -Wshift-count-overflow warning.
3166
3167 2024-01-30  Jonathan Wakely  <jwakely@redhat.com>
3168
3169         * testsuite/std/time/clock/gps/io.cc: Fix expected result in
3170         assertion and call test_format() from main.
3171
3172 2024-01-29  François Dumont  <fdumont@gcc.gnu.org>
3173
3174         * doc/xml/manual/debug_mode.xml: Link against libstdc++exp.a to use
3175         _GLIBCXX_DEBUG_BACKTRACE macro.
3176
3177 2024-01-24  Huanghui Nie  <nnnjkk@gmail.com>
3178             Théo Papadopoulo   <papadopoulo@gmail.com>
3179
3180         * include/bits/hashtable.h (_Hahstable<>::_M_remove_bucket_begin): Remove
3181         _M_before_begin check and cleanup implementation.
3182
3183 2024-01-22  Jonathan Wakely  <jwakely@redhat.com>
3184
3185         * testsuite/std/time/clock/file/io.cc: Fix expected result in
3186         assertion and call test_format() from main.
3187
3188 2024-01-21  Jonathan Wakely  <jwakely@redhat.com>
3189
3190         PR libstdc++/113500
3191         * include/bits/chrono_io.h (__formatter_chrono::_M_S): Fix
3192         printing of subseconds with floating-point rep.
3193         (__formatter_chrono::_M_format_to_ostream): Do not write
3194         time_point specializations directly to the ostream.
3195         (formatter<chrono::sys_time<D>, C>::parse): Do not allow an
3196         empty chrono-spec if the type fails to meet the constraints for
3197         writing to an ostream with operator<<.
3198         * testsuite/std/time/clock/file/io.cc: Check formatting
3199         non-integral times with empty chrono-specs.
3200         * testsuite/std/time/clock/gps/io.cc: Likewise.
3201         * testsuite/std/time/clock/utc/io.cc: Likewise.
3202         * testsuite/std/time/hh_mm_ss/io.cc: Likewise.
3203
3204 2024-01-21  Jonathan Wakely  <jwakely@redhat.com>
3205
3206         * include/bits/chrono.h (__file_clock::from_sys)
3207         (__file_clock::to_sys, __file_clock::_S_from_sys)
3208         (__file_clock::_S_to_sys): Use common_type for return type.
3209         * testsuite/std/time/clock/file/members.cc: Check round trip
3210         conversion for time with lower precision that seconds.
3211
3212 2024-01-21  Jonathan Wakely  <jwakely@redhat.com>
3213
3214         PR libstdc++/113512
3215         * include/std/format (__formatter_fp::format): Fix logic for
3216         alternate forms.
3217         * testsuite/std/format/functions/format.cc: Check buggy cases of
3218         alternate forms with g presentation type.
3219
3220 2024-01-20  Marek Polacek  <polacek@redhat.com>
3221
3222         PR c++/111410
3223         * include/std/ranges: Add #pragma to disable -Wdangling-reference with
3224         std::ranges::views::__adaptor::operator|.
3225
3226 2024-01-19  Jonathan Wakely  <jwakely@redhat.com>
3227
3228         * include/std/format (_Spec::_M_parse_fill_and_align): Do not
3229         use CTAD for _Utf32_view.
3230
3231 2024-01-19  Jonathan Wakely  <jwakely@redhat.com>
3232
3233         PR libstdc++/108822
3234         * include/std/tuple (__glibcxx_no_dangling_refs) [C++17]: Fix
3235         wrong fold-operator.
3236         * testsuite/20_util/tuple/dangling_ref.cc: Check tuples with one
3237         element and three elements. Check allocator-extended
3238         constructors.
3239
3240 2024-01-19  Patrick Palka  <ppalka@redhat.com>
3241
3242         * include/precompiled/stdc++.h [_GLIBCXX_HOSTED]: Include
3243         <print> and <text_encoding> for C++23 and C++26 respectively.
3244
3245 2024-01-18  Patrick Palka  <ppalka@redhat.com>
3246
3247         * include/bits/stl_pair.h [__cplusplus > 202002L]:
3248         Guard P2321R2 changes with __glibcxx_ranges_zip instead.
3249
3250 2024-01-18  Patrick Palka  <ppalka@redhat.com>
3251
3252         * include/std/tuple [__cplusplus > 202002L]: Guard P2321R2
3253         changes with __cpp_lib_ranges_zip instead.
3254
3255 2024-01-18  Patrick Palka  <ppalka@redhat.com>
3256
3257         PR libstdc++/109536
3258         * include/debug/safe_base.h (_Safe_sequence_base::_M_swap):
3259         Remove _GLIBCXX20_CONSTEXPR from non-inline member function.
3260         * include/debug/safe_iterator.h
3261         (_GLIBCXX20_CONSTEXPR_NON_LITERAL_SCOPE_BEGIN): Define.
3262         (_GLIBCXX20_CONSTEXPR_NON_LITERAL_SCOPE_END): Define.
3263         (_Safe_iterator::operator=): Use them around the code path that
3264         defines a variable of type __gnu_cxx::__scoped_lock.
3265         (_Safe_iterator::operator++): Likewise.
3266         (_Safe_iterator::operator--): Likewise.
3267         (_Safe_iterator::operator+=): Likewise.
3268         (_Safe_iterator::operator-=): Likewise.
3269         * testsuite/23_containers/vector/element_access/constexpr.cc
3270         (test_iterators): Test more iterator operations.
3271         * testsuite/23_containers/vector/bool/element_access/constexpr.cc
3272         (test_iterators): Likewise.
3273         * testsuite/std/ranges/adaptors/all.cc (test08) [_GLIBCXX_DEBUG]:
3274         Remove.
3275
3276 2024-01-18  Jonathan Wakely  <jwakely@redhat.com>
3277
3278         * include/bits/unicode.h (__charset_alias_match): Initialize
3279         __var_a and __var_b.
3280
3281 2024-01-18  Jonathan Wakely  <jwakely@redhat.com>
3282
3283         PR libstdc++/113450
3284         * testsuite/std/format/functions/format.cc: Use signed char
3285         instead of int8_t.
3286
3287 2024-01-17  Jonathan Wakely  <jwakely@redhat.com>
3288
3289         PR libstdc++/113318
3290         * acinclude.m4 (GLIBCXX_CONFIGURE): Add c++26 directory.
3291         (GLIBCXX_CHECK_TEXT_ENCODING): Define.
3292         * config.h.in: Regenerate.
3293         * configure: Regenerate.
3294         * configure.ac: Use GLIBCXX_CHECK_TEXT_ENCODING.
3295         * include/Makefile.am: Add new headers.
3296         * include/Makefile.in: Regenerate.
3297         * include/bits/locale_classes.h (locale::encoding): Declare new
3298         member function.
3299         * include/bits/unicode.h (__charset_alias_match): New function.
3300         * include/bits/text_encoding-data.h: New file.
3301         * include/bits/version.def (text_encoding): Define.
3302         * include/bits/version.h: Regenerate.
3303         * include/std/text_encoding: New file.
3304         * src/Makefile.am: Add new subdirectory.
3305         * src/Makefile.in: Regenerate.
3306         * src/c++26/Makefile.am: New file.
3307         * src/c++26/Makefile.in: New file.
3308         * src/c++26/text_encoding.cc: New file.
3309         * src/experimental/Makefile.am: Include c++26 convenience
3310         library.
3311         * src/experimental/Makefile.in: Regenerate.
3312         * python/libstdcxx/v6/printers.py (StdTextEncodingPrinter): New
3313         printer.
3314         * scripts/gen_text_encoding_data.py: New file.
3315         * testsuite/22_locale/locale/encoding.cc: New test.
3316         * testsuite/ext/unicode/charset_alias_match.cc: New test.
3317         * testsuite/std/text_encoding/cons.cc: New test.
3318         * testsuite/std/text_encoding/members.cc: New test.
3319         * testsuite/std/text_encoding/requirements.cc: New test.
3320
3321 2024-01-17  Jonathan Wakely  <jwakely@redhat.com>
3322
3323         * include/bits/unicode.h (_Grapheme_cluster_view): Require view.
3324         Do not use CTAD for _Utf32_view.
3325         (__format_width, __truncate): Do not use CTAD.
3326         (enable_borrowed_range<_Utf_view<T, R>>): Define specialization.
3327         (enable_borrowed_range<_Grapheme_cluster_view<R>>): Likewise.
3328
3329 2024-01-17  Patrick Palka  <ppalka@redhat.com>
3330
3331         * include/std/ranges (views::_CartesianProduct::operator()):
3332         Adjust identity case as per P2540R1.
3333         * testsuite/std/ranges/cartesian_product/1.cc (test01):
3334         Adjust expected result of the identity case.
3335
3336 2024-01-15  Patrick Palka  <ppalka@redhat.com>
3337
3338         * include/std/variant (__detail::__variant::_Variadic_union):
3339         Add bool __trivially_destructible template parameter.
3340         (__detail::__variant::_Variadic_union::~_Variadic_union):
3341         Use __trivially_destructible in constraints instead.
3342         (__detail::__variant::_Variant_storage): Pass
3343         __trivially_destructible value to _Variadic_union.
3344
3345 2024-01-15  Patrick Palka  <ppalka@redhat.com>
3346
3347         * include/bits/stl_iterator.h (const_iterator): Define conversion
3348         operators as per P2836R1.
3349         * include/bits/version.def (ranges_as_const): Update value.
3350         * include/bits/version.h: Regenerate.
3351         * testsuite/24_iterators/const_iterator/1.cc (test04): New test.
3352         * testsuite/std/ranges/adaptors/as_const/1.cc: Adjust expected
3353         value of __cpp_lib_ranges_as_const.
3354         * testsuite/std/ranges/version_c++23.cc: Likewise.
3355
3356 2024-01-15  Jonathan Wakely  <jwakely@redhat.com>
3357
3358         PR libstdc++/108822
3359         * include/std/tuple (__assignable, __is_nothrow_assignable):
3360         Move pre-C++20 definitions adjacent to their use.
3361
3362 2024-01-15  Jonathan Wakely  <jwakely@redhat.com>
3363
3364         PR testsuite/113366
3365         * include/std/format (basic_format_arg): Use __formattable
3366         variable template instead of __format::__formattable_with
3367         concept.
3368
3369 2024-01-15  Jonathan Wakely  <jwakely@redhat.com>
3370
3371         * src/c++20/tzdata.zi: Import new file from 2023d release.
3372         * src/c++20/tzdb.cc (tzdb_list::_Node::_S_read_leap_seconds)
3373         Update expiry date for leap seconds list.
3374
3375 2024-01-13  Jonathan Wakely  <jwakely@redhat.com>
3376
3377         PR libstdc++/108822
3378         * include/std/tuple (tuple): Add checks for dangling references.
3379         Reimplement constraints and constant expressions using C++20
3380         features.
3381         * include/std/type_traits [C++20]
3382         (__is_implicitly_default_constructible_v): Define.
3383         (__is_implicitly_default_constructible): Use variable template.
3384         * testsuite/20_util/tuple/dangling_ref.cc: New test.
3385
3386 2024-01-13  Patrick Palka  <ppalka@redhat.com>
3387
3388         PR libstdc++/108827
3389         PR libstdc++/111327
3390         * include/bits/version.def (bind_back): Define.
3391         * include/bits/version.h: Regenerate.
3392         * include/std/functional (_Bind_back): Define for C++23.
3393         (bind_back): Likewise.
3394         * testsuite/20_util/function_objects/bind_back/1.cc: New test
3395         (adapted from corresponding bind_front test).
3396         * testsuite/20_util/function_objects/bind_back/111327.cc: Likewise.
3397
3398 2024-01-13  Patrick Palka  <ppalka@redhat.com>
3399
3400         * include/std/functional (_Bind_front): Remove =default special
3401         member function declarations.
3402         (_Bind_front::operator()): Implement using C++23 deducing this
3403         when available.
3404         * testsuite/20_util/function_objects/bind_front/111327.cc:
3405         Adjust testcase to expect better errors in C++23 mode.
3406
3407 2024-01-13  Patrick Palka  <ppalka@redhat.com>
3408
3409         * include/std/ranges (views::__adaptor::operator|): Perform
3410         perfect forwarding of arguments.
3411         (views::__adaptor::_RangeAdaptor::operator()): Pass dummy
3412         first argument to _Partial.
3413         (views::__adaptor::_Partial::_Partial): Likewise.  Add dummy
3414         first parameter.
3415         (views::__adaptor::_Pipe::_Pipe): Perform perfect forwarding
3416         of arguments.
3417         (to): Pass dummy first argument to _Partial.
3418
3419 2024-01-13  Jonathan Wakely  <jwakely@redhat.com>
3420
3421         PR libstdc++/107466
3422         * include/bits/random.tcc (subtract_with_carry_engine::seed):
3423         Implement proposed resolution of LWG 4014.
3424         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
3425         line number.
3426         * testsuite/26_numerics/random/subtract_with_carry_engine/cons/lwg3809.cc:
3427         Check for expected result of 64-bit engine with seed that
3428         doesn't fit in 32-bits.
3429
3430 2024-01-12  Jonathan Wakely  <jwakely@redhat.com>
3431
3432         PR libstdc++/113320
3433         * include/std/format (__format::_Runtime_format_string): Add
3434         constructor and disable copy operations.
3435         (basic_format_string(_Runtime_format_string)): Add noexcept and
3436         take parameter by value not rvalue reference.
3437         (runtime_format): Add noexcept.
3438         * testsuite/std/format/runtime_format.cc: Check noexcept. Check
3439         that construction is only possible from prvalues, not xvalues.
3440
3441 2024-01-12  Jonathan Wakely  <jwakely@redhat.com>
3442
3443         PR libstdc++/105505
3444         * include/bits/stl_pair.h (pair::pair(U1&&, U2&&)) [C++23]: Add
3445         default template arguments, as per P1951R1.
3446         * testsuite/20_util/pair/cons/default_tmpl_args.cc: New test.
3447
3448 2024-01-12  Jonathan Wakely  <jwakely@redhat.com>
3449
3450         * include/std/format (__format::_Arg_store): Fix PR number in
3451         comment. Simplify preprocessor code.
3452
3453 2024-01-11  Jonathan Wakely  <jwakely@redhat.com>
3454
3455         * doc/xml/manual/evolution.xml: Fix spelling.
3456         * doc/html/manual/api.html: Regenerate.
3457
3458 2024-01-11  Jonathan Wakely  <jwakely@redhat.com>
3459
3460         * doc/xml/manual/evolution.xml: Document addition of
3461         libstdc++exp.a.
3462         * doc/html/*: Regenerate.
3463
3464 2024-01-11  Marcus Haehnel  <marcus.haehnel@kernkonzept.com>
3465
3466         * libsupc++/eh_unex_handler.cc: Adjust definition type to
3467         declaration.
3468
3469 2024-01-11  Michael Levine  <mlevine55@bloomberg.net>
3470
3471         * include/std/ranges (__glibcxx_want_ranges_iota): Remove
3472         duplicate definition.
3473
3474 2024-01-11  François Dumont  <fdumont@gcc.gnu.org>
3475
3476         PR libstdc++/112477
3477         * src/c++11/debug.cc
3478         (_Safe_iterator_base::_M_attach): Reset _M_version to 0 if attaching to null
3479         sequence.
3480         (_Safe_iterator_base::_M_attach_single): Likewise.
3481         (_Safe_local_iterator_base::_M_attach): Likewise.
3482         (_Safe_local_iterator_base::_M_attach_single): Likewise.
3483         * testsuite/23_containers/map/debug/112477.cc: New test case.
3484
3485 2024-01-11  Patrick Palka  <ppalka@redhat.com>
3486
3487         * include/bits/move.h (__like_t): Define in C++23 mode.
3488         * include/std/ranges (views::__adaptor::Partial::operator()):
3489         Implement using C++23 deducing this when available.
3490         (views::__adaptor::_Pipe::operator()): Likewise.
3491         * testsuite/std/ranges/adaptors/100577.cc: Adjust testcase to
3492         accept new "no match for call" errors issued in C++23 mode.
3493         * testsuite/std/ranges/adaptors/lazy_split_neg.cc: Likewise.
3494
3495 2024-01-11  Jonathan Wakely  <jwakely@redhat.com>
3496
3497         * python/libstdcxx/v6/printers.py (StdIntegralConstantPrinter):
3498         Add printer for std::integral_constant.
3499         * testsuite/libstdc++-prettyprinters/cxx11.cc: Test it.
3500
3501 2024-01-11  Jonathan Wakely  <jwakely@redhat.com>
3502
3503         PR libstdc++/113258
3504         * libsupc++/new_opa.cc: Prefer to use posix_memalign if
3505         available.
3506
3507 2024-01-11  Ken Matsui  <kmatsui@gcc.gnu.org>
3508
3509         * src/filesystem/ops-common.h (stat_type): Use using.
3510
3511 2024-01-11  Ken Matsui  <kmatsui@gcc.gnu.org>
3512
3513         PR libstdc++/113250
3514         * src/c++17/fs_ops.cc (fs::equivalent): Use || instead of &&.
3515         * src/filesystem/ops.cc (fs::equivalent): Likewise.
3516         * testsuite/27_io/filesystem/operations/equivalent.cc: Handle
3517         error codes.
3518         * testsuite/experimental/filesystem/operations/equivalent.cc:
3519         Likewise.
3520
3521 2024-01-11  Ken Matsui  <kmatsui@gcc.gnu.org>
3522
3523         * include/std/type_traits (is_compound): Do not use __not_.
3524         (is_compound_v): Use is_fundamental_v instead.
3525
3526 2024-01-11  Patrick Palka  <ppalka@redhat.com>
3527
3528         * include/bits/utility.h (_Nth_type): Use
3529         _GLIBCXX_USE_BUILTIN_TRAIT instead of __has_builtin.
3530
3531 2024-01-09  Jonathan Wakely  <jwakely@redhat.com>
3532
3533         * include/bits/unicode-data.h: Regenerate.
3534         * include/bits/unicode.h (_Utf_iterator::operator++()): Fix off
3535         by one error.
3536         (__incb_property): Add missing check for values before the
3537         first edge.
3538         (__is_extended_pictographic): Invert return values to fix
3539         copy&pasted logic.
3540         (_Grapheme_cluster_view::_Iterator): Remove second iterator
3541         member and find end of cluster lazily.
3542         * testsuite/ext/unicode/grapheme_view.cc: New test.
3543         * testsuite/ext/unicode/properties.cc: New test.
3544         * testsuite/ext/unicode/view.cc: New test.
3545
3546 2024-01-09  Andreas Schwab  <schwab@linux-m68k.org>
3547
3548         * scripts/extract_symvers.in: Require final colon to only match
3549         .dsynsym in the header of the dynamic symtab.
3550
3551 2024-01-09  Jonathan Wakely  <jwakely@redhat.com>
3552
3553         * include/bits/chrono_io.h (__formatter_chrono::_M_F): Simplify
3554         handling of string returned from std::format.
3555         (__formatter_chrono::_M_R_T): Likewise.
3556
3557 2024-01-08  Jonathan Wakely  <jwakely@redhat.com>
3558
3559         * include/bits/unicode.h (__null_sentinel): Remove.
3560         * testsuite/17_intro/names.cc: Add __null_sentinel.
3561
3562 2024-01-08  Jonathan Wakely  <jwakely@redhat.com>
3563
3564         * include/std/format (__format::_Runtime_format_string): Define
3565         new class template.
3566         (basic_format_string): Add non-consteval constructor for runtime
3567         format strings.
3568         (runtime_format): Define new function for C++26.
3569         * testsuite/std/format/runtime_format.cc: New test.
3570
3571 2024-01-08  Jonathan Wakely  <jwakely@redhat.com>
3572
3573         * include/bits/chrono_io.h (__formatter_chrono): Always use
3574         lvalue arguments to make_format_args.
3575         * include/std/format (make_format_args): Change parameter pack
3576         from forwarding references to lvalue references. Remove use of
3577         remove_reference_t which is now unnecessary.
3578         (format_to, formatted_size): Remove incorrect forwarding of
3579         arguments.
3580         * include/std/ostream (print): Remove forwarding of arguments.
3581         * include/std/print (print): Likewise.
3582         * testsuite/20_util/duration/io.cc: Use lvalues as arguments to
3583         make_format_args.
3584         * testsuite/std/format/arguments/args.cc: Likewise.
3585         * testsuite/std/format/arguments/lwg3810.cc: Likewise.
3586         * testsuite/std/format/functions/format.cc: Likewise.
3587         * testsuite/std/format/functions/vformat_to.cc: Likewise.
3588         * testsuite/std/format/string.cc: Likewise.
3589         * testsuite/std/time/day/io.cc: Likewise.
3590         * testsuite/std/time/month/io.cc: Likewise.
3591         * testsuite/std/time/weekday/io.cc: Likewise.
3592         * testsuite/std/time/year/io.cc: Likewise.
3593         * testsuite/std/time/year_month_day/io.cc: Likewise.
3594         * testsuite/std/format/arguments/args_neg.cc: New test.
3595
3596 2024-01-08  Jonathan Wakely  <jwakely@redhat.com>
3597
3598         * include/Makefile.am: Add new headers.
3599         * include/Makefile.in: Regenerate.
3600         * include/bits/unicode.h: New file.
3601         * include/bits/unicode-data.h: New file.
3602         * include/std/format: Include <bits/unicode.h>.
3603         (__literal_encoding_is_utf8): Move to <bits/unicode.h>.
3604         (_Spec::_M_fill): Change type to char32_t.
3605         (_Spec::_M_parse_fill_and_align): Read a Unicode scalar value
3606         instead of a single character.
3607         (__write_padded): Change __fill_char parameter to char32_t and
3608         encode it into the output.
3609         (__formatter_str::format): Use new __unicode::__field_width and
3610         __unicode::__truncate functions.
3611         * include/std/ostream: Adjust namespace qualification for
3612         __literal_encoding_is_utf8.
3613         * include/std/print: Likewise.
3614         * src/c++23/print.cc: Add [[unlikely]] attribute to error path.
3615         * testsuite/ext/unicode/view.cc: New test.
3616         * testsuite/std/format/functions/format.cc: Add missing examples
3617         from the standard demonstrating alignment with non-ASCII
3618         characters. Add examples checking correct handling of extended
3619         grapheme clusters.
3620
3621 2024-01-08  Jonathan Wakely  <jwakely@redhat.com>
3622
3623         * include/bits/version.def (format_uchar): Define.
3624         * include/bits/version.h: Regenerate.
3625         * include/std/format (formatter<C, C>::format): Check for
3626         _Pres_c and call _M_format_character directly. Cast C to its
3627         unsigned equivalent for formatting as an integer.
3628         (formatter<char, wchar_t>::format): Likewise.
3629         (basic_format_arg(T&)): Store char arguments as unsigned char
3630         for formatting to a wide string.
3631         * testsuite/std/format/functions/format.cc: Adjust test. Check
3632         formatting of
3633
3634 2024-01-07  Jonathan Wakely  <jwakely@redhat.com>
3635
3636         PR libstdc++/112997
3637         * libsupc++/unwind-cxx.h (__cxa_call_terminate): Change first
3638         parameter to void*.
3639
3640 2024-01-07  Jonathan Wakely  <jwakely@redhat.com>
3641
3642         * testsuite/20_util/variant/87619.cc: Remove dg-timeout-factor.
3643
3644 2024-01-07  Jonathan Wakely  <jwakely@redhat.com>
3645
3646         * include/std/type_traits (is_trivially_destructible_v): Use
3647         built-in directly when concepts are supported.
3648         * testsuite/20_util/is_trivially_destructible/value_v.cc: New
3649         test.
3650
3651 2024-01-06  Gwenole Beauchesne  <gb.devel@gmail.com>
3652
3653         * testsuite/tr1/8_c_compatibility/cinttypes/functions.cc: Use
3654         nonnull arguments to strtoimax() and wcstoimax() functions.
3655
3656 2024-01-05  Jonathan Wakely  <jwakely@redhat.com>
3657
3658         * src/c++17/fs_path.cc (path::_List::reserve): Limit maximum
3659         size and check for overflows in arithmetic.
3660         (path::operator/=(const path&)): Remove redundant exponential
3661         growth calculation.
3662
3663 2024-01-05  Martin Küttler  <martin.kuettler@kernkonzept.com>
3664
3665         * src/c++17/fs_path.cc (path::_List::reserve): Avoid
3666         floating-point arithmetic.
3667
3668 2024-01-05  Jonathan Wakely  <jwakely@redhat.com>
3669
3670         PR libstdc++/113241
3671         * include/std/type_traits (is_convertible_v): Guard use of
3672         built-in with preprocessor check.
3673
3674 2024-01-05  Jonathan Wakely  <jwakely@redhat.com>
3675
3676         PR libstdc++/113200
3677         * include/bits/char_traits.h (__gnu_cxx::char_traits::move): Use
3678         __builtin_constant_p to check for unrelated pointers that cannot
3679         be compared during constant evaluation.
3680         * testsuite/21_strings/char_traits/requirements/113200.cc: New
3681         test.
3682
3683 2024-01-05  Cassio Neri  <cassio.neri@gmail.com>
3684
3685         * include/std/chrono: Fix + and - for months and weekdays.
3686         * testsuite/std/time/month/1.cc: Add constexpr tests against overflow.
3687         * testsuite/std/time/month/2.cc: New test for extreme values.
3688         * testsuite/std/time/weekday/1.cc: Add constexpr tests against overflow.
3689         * testsuite/std/time/weekday/2.cc: New test for extreme values.
3690
3691 2024-01-05  Jonathan Wakely  <jwakely@redhat.com>
3692
3693         PR libstdc++/113099
3694         * include/bits/locale_classes.tcc (__try_use_facet): Use
3695         if-constexpr for C++11 and up.
3696
3697 2024-01-05  Ken Matsui  <kmatsui@gcc.gnu.org>
3698
3699         * include/std/type_traits: Use _GLIBCXX_USE_BUILTIN_TRAIT.
3700
3701 2024-01-04  Arsen Arsenović  <arsen@aarsen.me>
3702
3703         * include/std/generator (_Subyield_state::_M_jump_in): Fix typo
3704         reported by Will Hawkins <hawkinsw@obs.cr>.
3705
3706 2024-01-04  Arsen Arsenović  <arsen@aarsen.me>
3707
3708         * include/std/generator (_Stateless_alloc): Rename typename _A
3709         to _All.
3710
3711 2024-01-03  Patrick Palka  <ppalka@redhat.com>
3712
3713         PR testsuite/113175
3714         * testsuite/std/ranges/iota/max_size_type.cc (test02): Reduce
3715         'limit' to 100 from 1000 and adjust 'log2_limit' accordingly.
3716         (test03): Likewise.
3717
3718 \f
3719 Copyright (C) 2024 Free Software Foundation, Inc.
3720
3721 Copying and distribution of this file, with or without modification,
3722 are permitted in any medium without royalty provided the copyright
3723 notice and this notice are preserved.