libstdc++-v3/ChangeLog

   1 2023-04-12  Jonathan Wakely  <jwakely@redhat.com>
   2
   3         * doc/xml/manual/using.xml: Document libstdc++exp.a library.
   4         * doc/html/*: Regenerate.
   5
   6 2023-04-12  Jonathan Wakely  <jwakely@redhat.com>
   7
   8         * testsuite/17_intro/names.cc [_AIX]: Do not define policy.
   9         * testsuite/19_diagnostics/error_code/cons/lwg3629.cc: Rename
  10         namespace to avoid clashing with libc struct.
  11         * testsuite/19_diagnostics/error_condition/cons/lwg3629.cc:
  12         Likewise.
  13         * testsuite/23_containers/unordered_map/96088.cc: Skip on AIX.
  14         * testsuite/23_containers/unordered_multimap/96088.cc: Likewise.
  15         * testsuite/23_containers/unordered_multiset/96088.cc: Likewise.
  16         * testsuite/23_containers/unordered_set/96088.cc: Likewise.
  17         * testsuite/experimental/synchronized_value.cc: Require gthreads
  18         and add missing option for pthreads targets.
  19
  20 2023-04-12  Patrick Palka  <ppalka@redhat.com>
  21
  22         * include/std/ranges (__cpp_lib_ranges_enumerate): Define
  23         for C++23.
  24         (__detail::__range_with_movable_reference): Likewise.
  25         (enumerate_view): Likewise.
  26         (enumerate_view::_Iterator): Likewise.
  27         (enumerate_view::_Sentinel): Likewise.
  28         (views::__detail::__can_enumerate_view): Likewise.
  29         (views::_Enumerate, views::enumerate): Likewise.
  30         * include/std/version (__cpp_lib_ranges_enumerate): Likewise.
  31         * testsuite/std/ranges/version_c++23.cc: Verify value of
  32         __cpp_lib_ranges_enumerate.
  33         * testsuite/std/ranges/adaptors/enumerate/1.cc: New test.
  34
  35 2023-04-12  Patrick Palka  <ppalka@redhat.com>
  36
  37         * include/std/ranges (lazy_split_view::_OuterIter::_OuterIter):
  38         Propagate _M_trailing_empty in the const-converting constructor
  39         as per LWG 3904.
  40         * testsuite/std/ranges/adaptors/adjacent/1.cc (test04): Correct
  41         assertion.
  42         * testsuite/std/ranges/adaptors/lazy_split.cc (test12): New test.
  43
  44 2023-04-12  Patrick Palka  <ppalka@redhat.com>
  45
  46         * src/c++17/floating_from_chars.cc: Include <algorithm>,
  47         <iterator>, <limits> and <cstdint>.
  48
  49 2023-04-12  Patrick Palka  <ppalka@redhat.com>
  50
  51         PR libstdc++/108291
  52         * include/std/ranges (chunk_by_view::_M_find_next): Generalize
  53         parameter types of the lambda wrapper passed to adjacent_find.
  54         (chunk_by_view::_M_find_prev): Likewise.
  55         * testsuite/std/ranges/adaptors/chunk_by/1.cc (test04, test05):
  56         New tests.
  57
  58 2023-04-12  Jonathan Wakely  <jwakely@redhat.com>
  59
  60         PR libstdc++/109482
  61         * include/experimental/internet (basic_endpoint::basic_endpoint()):
  62         Ensure that the required union members are active. Only define
  63         as constexpr for C++20 and later.
  64         (basic_endpoint::basic_endpoint(const protocol_type&, port_type)):
  65         Likewise.
  66         * testsuite/experimental/net/internet/endpoint/cons.cc: Only
  67         check constexpr default constructor for C++20 and later.
  68         * testsuite/experimental/net/internet/endpoint/extensible.cc:
  69         Likewise.
  70
  71 2023-04-12  Jonathan Wakely  <jwakely@redhat.com>
  72
  73         * src/c++20/tzdata.zi: Import new file from 2023c release.
  74
  75 2023-04-05  Arsen Arsenović  <arsen@aarsen.me>
  76
  77         * include/precompiled/stdc++.h (C++17): Don't double-include
  78         <charconv>, once with wrong conditions.
  79         * testsuite/18_support/96817.cc: Require hosted.
  80         * testsuite/18_support/bad_exception/59392.cc: Ditto.
  81         * testsuite/20_util/scoped_allocator/108952.cc: Ditto.
  82         * testsuite/20_util/uses_allocator/lwg3527.cc: Ditto.
  83         * testsuite/29_atomics/atomic/operators/pointer_partial_void.cc:
  84         Ditto.
  85
  86 2023-04-05  Arsen Arsenović  <arsen@aarsen.me>
  87
  88         * include/bits/c++config: When __STDC_HOSTED__ is zero,
  89         disable _GLIBCXX_DEBUG and, if it was set, enable
  90         _GLIBCXX_ASSERTIONS.
  91         * testsuite/lib/libstdc++.exp (check_v3_target_debug_mode):
  92         Include <bits/c++config.h> when determining whether debug is
  93         set, in order to inherit the logic from above
  94
  95 2023-04-05  Arsen Arsenović  <arsen@aarsen.me>
  96
  97         * testsuite/17_intro/versionconflict.cc: New test.
  98         * include/std/version: Allow disabling the system_header pragma
  99         via _GLIBCXX_TESTING_SYSHDR.
 100
 101 2023-04-05  Arsen Arsenović  <arsen@aarsen.me>
 102
 103         * include/bits/unique_ptr.h (__cpp_lib_constexpr_memory):
 104         Synchronize the definition block with...
 105         * include/bits/ptr_traits.h (__cpp_lib_constexpr_memory):
 106         ... this one here.  Also define the 202202L value, rather than
 107         leaving it up to purely unique_ptr.h, so that the value is
 108         synchronized across all headers.
 109         (__gnu_debug::_Safe_iterator_base): Move into new conditional
 110         block.
 111         * include/std/memory (__cpp_lib_atomic_value_initialization):
 112         Define on freestanding under the same conditions as in
 113         atomic_base.h.
 114         * include/std/version (__cpp_lib_robust_nonmodifying_seq_ops):
 115         Also define on freestanding.
 116         (__cpp_lib_to_chars): Ditto.
 117         (__cpp_lib_gcd): Ditto.
 118         (__cpp_lib_gcd_lcm): Ditto.
 119         (__cpp_lib_raw_memory_algorithms): Ditto.
 120         (__cpp_lib_array_constexpr): Ditto.
 121         (__cpp_lib_nonmember_container_access): Ditto.
 122         (__cpp_lib_clamp): Ditto.
 123         (__cpp_lib_constexpr_char_traits): Ditto.
 124         (__cpp_lib_constexpr_string): Ditto.
 125         (__cpp_lib_sample): Ditto.
 126         (__cpp_lib_lcm): Ditto.
 127         (__cpp_lib_constexpr_iterator): Ditto.
 128         (__cpp_lib_constexpr_char_traits): Ditto.
 129         (__cpp_lib_interpolate): Ditto.
 130         (__cpp_lib_constexpr_utility): Ditto.
 131         (__cpp_lib_shift): Ditto.
 132         (__cpp_lib_ranges): Ditto.
 133         (__cpp_lib_move_iterator_concept): Ditto.
 134         (__cpp_lib_constexpr_numeric): Ditto.
 135         (__cpp_lib_constexpr_functional): Ditto.
 136         (__cpp_lib_constexpr_algorithms): Ditto.
 137         (__cpp_lib_constexpr_tuple): Ditto.
 138         (__cpp_lib_constexpr_memory): Ditto.
 139
 140 2023-04-05  John David Anglin  <danglin@gcc.gnu.org>
 141
 142         * testsuite/22_locale/locale/cons/12658_thread-2.cc: Double
 143         timeout factor on hppa*-*-*.
 144
 145 2023-04-05  Jonathan Wakely  <jwakely@redhat.com>
 146
 147         * include/bits/regex.h (sub_match::swap): New function.
 148         * testsuite/28_regex/sub_match/lwg3204.cc: New test.
 149
 150 2023-04-04  Jonathan Wakely  <jwakely@redhat.com>
 151
 152         * doc/xml/manual/extensions.xml: Remove std::bad_exception from
 153         example program.
 154         * doc/html/manual/ext_demangling.html: Regenerate.
 155
 156 2023-03-31  Jonathan Wakely  <jwakely@redhat.com>
 157
 158         PR tree-optimization/107087
 159         * include/bits/cow_string.h (basic_string::size()): Add
 160         optimizer hint that _S_empty_rep()._M_length is always zero.
 161         (basic_string::length()): Call size().
 162
 163 2023-03-31  Jonathan Wakely  <jwakely@redhat.com>
 164
 165         PR libstdc++/109339
 166         * include/std/stop_token (_Stop_state_ptr(const stop_source&)):
 167         Add attribute access with access-mode 'none'.
 168         * testsuite/30_threads/stop_token/stop_source/109339.cc: New test.
 169
 170 2023-03-31  Jonathan Wakely  <jwakely@redhat.com>
 171
 172         * include/experimental/internet (ip::basic_endpoint::_M_if_v6):
 173         Revert change from member function to data member. Fix for
 174         constant evaluation by detecting which union member is active.
 175         (ip::basic_endpoint::resize): Revert changes to update _M_is_v6
 176         flag.
 177
 178 2023-03-29  Jonathan Wakely  <jwakely@redhat.com>
 179
 180         PR libstdc++/109242
 181         * testsuite/20_util/optional/monadic/pr109340.cc: Moved to...
 182         * testsuite/20_util/optional/monadic/pr109242.cc: ...here.
 183
 184 2023-03-29  Jonathan Wakely  <jwakely@redhat.com>
 185
 186         * include/experimental/internet (ip::make_address): Implement
 187         missing overload.
 188         (ip::address_v4::broadcast()): Avoid undefined shift.
 189         (ip::basic_endpoint): Fix member functions for constexpr.
 190         (ip::basic_endpoint::_M_is_v6): Replace member function with
 191         data member, adjust member functions using it.
 192         (ip::basic_endpoint::resize): Update _M_is_v6 based on sockaddr
 193         content.
 194         * testsuite/experimental/net/internet/address/v4/cons.cc: Fix
 195         constexpr checks to work in C++14.
 196         * testsuite/experimental/net/internet/address/v4/creation.cc:
 197         Likewise.
 198         * testsuite/experimental/net/internet/endpoint/cons.cc:
 199         Likewise.
 200         * testsuite/experimental/net/internet/network/v4/cons.cc:
 201         Likewise.
 202         * testsuite/experimental/net/internet/network/v4/members.cc:
 203         Likewise.
 204         * testsuite/experimental/net/internet/endpoint/extensible.cc: New test.
 205
 206 2023-03-29  Jonathan Wakely  <jwakely@redhat.com>
 207
 208         * include/std/expected (expected::value() &): Use const lvalue
 209         for unex member passed to bad_expected_access constructor, as
 210         per LWG 3843.
 211
 212 2023-03-29  Jonathan Wakely  <jwakely@redhat.com>
 213
 214         PR libstdc++/109340
 215         * include/std/expected (expected::transform): Use
 216         std::remove_cv_t instead of std::remove_cvref_t.
 217         (expected::transform_error): Likewise.
 218         (expected<cv void, E>::transform): Likewise.
 219         (expected<cv void, E>::transform_error): Likewise.
 220         * include/std/optional (transform): Use std::remove_cv_t.
 221         * testsuite/20_util/optional/monadic/pr109340.cc: New test.
 222
 223 2023-03-29  Jonathan Wakely  <jwakely@redhat.com>
 224
 225         * include/std/optional (optional): Adjust static assertion to
 226         reject arrays and functions as well as references.
 227         * testsuite/20_util/optional/requirements_neg.cc: New test.
 228
 229 2023-03-28  Jonathan Wakely  <jwakely@redhat.com>
 230
 231         PR libstdc++/103387
 232         * include/bits/istream.tcc (istream::_M_extract(ValueT&)): Use
 233         std::use_facet instead of cached _M_num_get facet.
 234         (istream::operator>>(short&)): Likewise.
 235         (istream::operator>>(int&)): Likewise.
 236         * include/bits/ostream.tcc (ostream::_M_insert(ValueT)): Use
 237         std::use_facet instead of cached _M_num_put facet.
 238
 239 2023-03-28  Jonathan Wakely  <jwakely@redhat.com>
 240
 241         * include/bits/char_traits.h (char_traits::copy): Return without
 242         using memcpy if n==0.
 243         (char_traits::assign): Likewise for memset.
 244
 245 2023-03-28  Jonathan Wakely  <jwakely@redhat.com>
 246
 247         PR libstdc++/109299
 248         * include/bits/basic_string.h (basic_string::_M_is_local()): Add
 249         hint for compiler that local strings fit in the local buffer.
 250
 251 2023-03-28  Jonathan Wakely  <jwakely@redhat.com>
 252
 253         PR libstdc++/109288
 254         * include/std/chrono (__detail::__get_leap_second_info): Update
 255         expiry date of hardcoded leapseconds list.
 256         * src/c++20/tzdb.cc (tzdb_list::_Node::_S_read_leap_seconds()):
 257         Likewise.
 258         * src/c++20/tzdata.zi: Import new file from 2023a release.
 259         * testsuite/std/time/time_zone/get_info_local.cc: Only check
 260         transitions for Egypt up to 2014.
 261
 262 2023-03-28  Matthias Kretz  <m.kretz@gsi.de>
 263
 264         * include/experimental/bits/simd.h (is_simd_flag_type): New.
 265         (_IsSimdFlagType): New.
 266         (copy_from, copy_to, load ctors): Constrain _Flags using
 267         _IsSimdFlagType.
 268
 269 2023-03-28  Matthias Kretz  <m.kretz@gsi.de>
 270
 271         * include/experimental/bits/simd_x86.h (_SimdImplX86): Use
 272         _Base::_S_divides if the optimized _S_divides function is hidden
 273         via the preprocessor.
 274
 275 2023-03-27  Jakub Jelinek  <jakub@redhat.com>
 276
 277         * testsuite/experimental/net/timer/waitable/dest.cc: Avoid -Wformat
 278         warning if size_t is not unsigned long.
 279
 280 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
 281
 282         * include/bits/shared_ptr_atomic.h (atomic::operator=(nullptr_t)):
 283         Add overload, as per LWG 3893.
 284         * testsuite/20_util/shared_ptr/atomic/atomic_shared_ptr.cc:
 285         Check assignment from nullptr.
 286
 287 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
 288
 289         * include/std/format (formatter<const charT[N], charT>): Do not
 290         define partial speclialization, as per LWG 3833.
 291         * testsuite/std/format/formatter/requirements.cc: Check it.
 292
 293 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
 294
 295         * include/std/utility (__cpp_lib_constexpr_algorithms): Define,
 296         as per LWG 3792.
 297         * testsuite/20_util/exchange/constexpr.cc: Check for it.
 298
 299 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
 300
 301         * include/std/version (__cpp_lib_format): Define.
 302         * testsuite/std/format/functions/format.cc: Check it.
 303
 304 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
 305
 306         * include/bits/basic_string.tcc (basic_string::resize_and_overwrite):
 307         Pass rvalues to the callback, as now allowed by LWG 3645.
 308         Enforce preconditions on the return value.
 309         * testsuite/21_strings/basic_string/capacity/char/resize_and_overwrite.cc:
 310         Adjust.
 311
 312 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
 313
 314         * include/std/format: Add a comment noting that the resolution
 315         of LWG 3720 has been applied..
 316
 317 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
 318
 319         * include/bits/regex.h (match_results): Add allocator-extended
 320         copy and move constructors, as per LWG 2195.
 321         * testsuite/28_regex/match_results/ctors/char/alloc.cc: New test.
 322
 323 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
 324
 325         * include/bits/stream_iterator.h (istream_iterator): Add
 326         constexpr to copy constructor, as per LWG 3600.
 327         * testsuite/24_iterators/istream_iterator/cons/constexpr.cc:
 328         Check copy construction.
 329
 330 2023-03-21  Matthias Kretz  <m.kretz@gsi.de>
 331
 332         * include/experimental/bits/simd_x86.h
 333         (_SimdImplX86::_S_divides): Replace test for __GCC_IEC_559 == 0
 334         with __RECIPROCAL_MATH__.
 335
 336 2023-03-21  Matthias Kretz  <m.kretz@gsi.de>
 337
 338         * include/experimental/bits/simd_detail.h: Don't define
 339         _GLIBCXX_SIMD_WORKAROUND_PR90993 for Clang.
 340         * include/experimental/bits/simd_x86.h (_S_divides): Remove
 341         check for __clang__.
 342
 343 2023-03-21  Matthias Kretz  <m.kretz@gsi.de>
 344
 345         * include/experimental/bits/simd_detail.h: Don't declare the
 346         simd API as constexpr with Clang.
 347         * include/experimental/bits/simd_x86.h (__movm): New.
 348         (_S_blend_avx512): Resolve FIXME. Implement blend using __movm
 349         and ?:.
 350         (_SimdImplX86::_S_masked_unary): Clang does not implement the
 351         same builtins. Implement the function using __movm, ?:, and -
 352         operators on vector_size types instead.
 353
 354 2023-03-21  Matthias Kretz  <m.kretz@gsi.de>
 355
 356         * testsuite/experimental/simd/tests/operators.cc: Clang doesn't
 357         define __GCC_IEC_559. Use __STDC_IEC_559__ instead.
 358
 359 2023-03-20  Jonathan Wakely  <jwakely@redhat.com>
 360
 361         * src/filesystem/ops-common.h (get_temp_directory_from_env): Fix
 362         formatting.
 363
 364 2023-03-20  Marek Polacek  <polacek@redhat.com>
 365
 366         PR c++/109159
 367         * testsuite/20_util/pair/cons/explicit_construct.cc: Adjust dg-error.
 368         * testsuite/20_util/tuple/cons/explicit_construct.cc: Likewise.
 369         * testsuite/23_containers/span/explicit.cc: Likewise.
 370
 371 2023-03-20  Jonathan Wakely  <jwakely@redhat.com>
 372
 373         PR libstdc++/109182
 374         * include/std/expected (expected<void>::expected(in_place_t)):
 375         Remove template-head.
 376
 377 2023-03-18  Jonathan Wakely  <jwakely@redhat.com>
 378
 379         PR libstdc++/109165
 380         * testsuite/18_support/coroutines/hash.cc: Use const object
 381         in second call.
 382
 383 2023-03-17  Jonathan Wakely  <jwakely@redhat.com>
 384
 385         PR libstdc++/109165
 386         * include/std/coroutine (hash<>::operator()): Add const.
 387         * testsuite/18_support/coroutines/hash.cc: New test.
 388
 389 2023-03-14  Patrick Palka  <ppalka@redhat.com>
 390
 391         PR libstdc++/109111
 392         * include/std/ranges (repeat_view): Remove redundant parentheses
 393         in requires-clause.
 394         (repeat_view::_Iterator): Correct the requires-clause.
 395
 396 2023-03-14  Patrick Palka  <ppalka@redhat.com>
 397
 398         * include/bits/stl_iterator.h (move_iterator::_S_iter_concept):
 399         Define.
 400         (__cpp_lib_move_iterator_concept): Define for C++20.
 401         (move_iterator::iterator_concept): Strengthen as per P2520R0.
 402         * include/std/version (__cpp_lib_move_iterator_concept): Define
 403         for C++20.
 404         * testsuite/24_iterators/move_iterator/p2520r0.cc: New test.
 405
 406 2023-03-14  Patrick Palka  <ppalka@redhat.com>
 407
 408         * include/bits/ranges_util.h (view_interface::empty): Add
 409         preferred overloads that use ranges::size when the range is
 410         sized as per LWG 3715.
 411         * testsuite/std/ranges/adaptors/lwg3715.cc: New test.
 412
 413 2023-03-14  Jonathan Wakely  <jwakely@redhat.com>
 414
 415         * include/bits/chrono.h (__is_duration_v, __is_time_point_v):
 416         Only define for C++17 and later.
 417
 418 2023-03-14  Jonathan Wakely  <jwakely@redhat.com>
 419
 420         * src/Makefile.am: Add comment about linker script fragments.
 421         * src/Makefile.in: Regenerate.
 422
 423 2023-03-14  Jonathan Wakely  <jwakely@redhat.com>
 424
 425         PR libstdc++/62196
 426         * include/bits/mask_array.h (mask_array): Add assertions to
 427         assignment operators.
 428         * include/std/valarray (valarray::operator[](valarray<bool>)):
 429         Add assertions.
 430         * testsuite/26_numerics/valarray/mask-1_neg.cc: New test.
 431         * testsuite/26_numerics/valarray/mask-2_neg.cc: New test.
 432         * testsuite/26_numerics/valarray/mask-3_neg.cc: New test.
 433         * testsuite/26_numerics/valarray/mask-4_neg.cc: New test.
 434         * testsuite/26_numerics/valarray/mask-5_neg.cc: New test.
 435         * testsuite/26_numerics/valarray/mask-6_neg.cc: New test.
 436         * testsuite/26_numerics/valarray/mask-7_neg.cc: New test.
 437         * testsuite/26_numerics/valarray/mask-8_neg.cc: New test.
 438         * testsuite/26_numerics/valarray/mask.cc: New test.
 439
 440 2023-03-13  Jakub Jelinek  <jakub@redhat.com>
 441
 442         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
 443         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
 444
 445 2023-03-13  Jonathan Wakely  <jwakely@redhat.com>
 446
 447         * doc/Makefile.am: Add comment referring to documentation.
 448         * doc/Makefile.in: Regenerate.
 449
 450 2023-03-13  Jonathan Wakely  <jwakely@redhat.com>
 451
 452         * doc/html/*: Regenerate.
 453
 454 2023-03-13  Jonny Grant  <jg@jguk.org>
 455
 456         * doc/xml/faq.xml: Update copyright year.
 457
 458 2023-03-13  Jonathan Wakely  <jwakely@redhat.com>
 459
 460         * include/bits/allocator.h: Fix typo in comment.
 461
 462 2023-03-12  Jakub Jelinek  <jakub@redhat.com>
 463
 464         * config/abi/pre/gnu.ver (CXXABI_1.3.14): Also export __bf16 tinfos
 465         if it isn't mangled as DF16b but u6__bf16.
 466
 467 2023-03-12  Gerald Pfeifer  <gerald@pfeifer.com>
 468
 469         * doc/xml/manual/documentation_hacking.xml: Move www.graphviz.org
 470         to https.
 471         * doc/html/manual/documentation_hacking.html: Regenerate.
 472
 473 2023-03-10  Jonathan Wakely  <jwakely@redhat.com>
 474
 475         PR libstdc++/109064
 476         * python/libstdcxx/v6/xmethods.py (SharedPtrUseCountWorker):
 477         Remove self-recursion in __init__. Add missing _supports.
 478         * testsuite/libstdc++-xmethods/shared_ptr.cc: Check use_count()
 479         and unique().
 480
 481 2023-03-09  Patrick Palka  <ppalka@redhat.com>
 482
 483         * include/std/ranges
 484         (cartesian_product_view::_Iterator::_Iterator): Remove
 485         constraint on default constructor as per LWG 3849.
 486         (cartesian_product_view::_Iterator::_M_prev): Adjust position
 487         of _Nm > 0 test as per LWG 3820.
 488         (cartesian_product_view::_Iterator::_M_advance): Perform bounds
 489         checking only on sized cartesian products.
 490         * testsuite/std/ranges/cartesian_product/1.cc (test08): New test.
 491
 492 2023-03-09  Patrick Palka  <ppalka@redhat.com>
 493
 494         PR libstdc++/109024
 495         * include/std/ranges (chunk_by_view::_M_pred): Remove DMI as per
 496         LWG 3796.
 497         (repeat_view::_M_pred): Likewise.
 498         * testsuite/std/ranges/adaptors/chunk_by/1.cc (test03): New test.
 499         * testsuite/std/ranges/repeat/1.cc (test05): New test.
 500
 501 2023-03-09  Patrick Palka  <ppalka@redhat.com>
 502
 503         PR libstdc++/108362
 504         * include/std/ranges (__detail::__can_single_view): New concept.
 505         (_Single::operator()): Constrain it.  Move [[nodiscard]] to the
 506         end of the function declarator.
 507         (__detail::__can_iota_view): New concept.
 508         (_Iota::operator()): Constrain it.  Move [[nodiscard]] to the
 509         end of the function declarator.
 510         (__detail::__can_istream_view): New concept.
 511         (_Istream::operator()): Constrain it.  Move [[nodiscard]] to the
 512         end of the function declarator.
 513         * testsuite/std/ranges/iota/iota_view.cc (test07): New test.
 514         * testsuite/std/ranges/istream_view.cc (test08): New test.
 515         * testsuite/std/ranges/single_view.cc (test07): New test.
 516
 517 2023-03-09  Patrick Palka  <ppalka@redhat.com>
 518
 519         PR libstdc++/107572
 520         * include/std/ranges (cartesian_product_view::end): When
 521         building the tuple of iterators, avoid calling ranges::begin on
 522         the first range if __empty_tail is false.
 523         * testsuite/std/ranges/cartesian_product/1.cc (test07): New test.
 524
 525 2023-03-09  Jonathan Wakely  <jwakely@redhat.com>
 526
 527         PR libstdc++/108882
 528         * config/os/gnu-linux/ldbl-ieee128-extra.ver: Fix incorrect
 529         patterns.
 530
 531 2023-03-07  Jakub Jelinek  <jakub@redhat.com>
 532
 533         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
 534         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
 535         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
 536         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
 537         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
 538
 539 2023-03-07  Jonathan Wakely  <jwakely@redhat.com>
 540
 541         PR libstdc++/108882
 542         * config/abi/pre/gnu.ver (GLIBCXX_3.4.31): Adjust patterns to
 543         not match symbols in namespace std::__gnu_cxx11_ieee128.
 544         * config/os/gnu-linux/ldbl-ieee128-extra.ver: Add patterns for
 545         std::__gnu_cxx11_ieee128::money_{get,put}.
 546
 547 2023-03-07  Jonathan Wakely  <jwakely@redhat.com>
 548
 549         * libsupc++/eh_personality.cc: Fix spelling in comment.
 550
 551 2023-03-03  Alexandre Oliva  <oliva@adacore.com>
 552
 553         * testsuite/30_threads/async/async.cc (test04): Initialize
 554         steady_start, renamed from steady_begin, next to slow_start.
 555         Increase tolerance for final wait.
 556
 557 2023-03-03  Alexandre Oliva  <oliva@adacore.com>
 558
 559         * testsuite/libstdc++-prettyprinters/80276.cc: Add
 560         std::string to debug info.
 561         * testsuite/libstdc++-prettyprinters/libfundts.cc: Likewise.
 562
 563 2023-03-03  Alexandre Oliva  <oliva@adacore.com>
 564
 565         PR libstdc++/104852
 566         PR libstdc++/95989
 567         PR libstdc++/52590
 568         * include/bits/std_thread.h (thread::_M_thread_deps): New
 569         static implicitly-inline member function.
 570         (std::thread template ctor): Pass it to _M_start_thread.
 571         * src/c++11/thread.cc (thread::_M_start_thread): Name depend
 572         parameter, force it live on entry.
 573
 574 2023-03-03  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 575
 576         * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
 577         * config/abi/post/i386-solaris/amd64/baseline_symbols.txt:
 578         Likewise.
 579         * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
 580         * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
 581         Likewise.
 582
 583 2023-03-01  Jonathan Wakely  <jwakely@redhat.com>
 584
 585         * include/bits/cow_string.h: Fix typo in comment.
 586
 587 2023-03-01  Jonathan Wakely  <jwakely@redhat.com>
 588
 589         * src/c++20/tzdb.cc (chrono::tzdb::current_zone()) Use "UTC" if
 590         current time zone cannot be determined.
 591         * testsuite/std/time/tzdb/1.cc: Remove conditions based on
 592         HAVE_TZDB macro and test all members unconditionally.
 593
 594 2023-02-28  Jonathan Wakely  <jwakely@redhat.com>
 595
 596         PR libstdc++/108952
 597         * include/bits/uses_allocator_args.h
 598         (uses_allocator_construction_args): Implement LWG 3527.
 599         * testsuite/20_util/pair/astuple/get-2.cc: New test.
 600         * testsuite/20_util/scoped_allocator/108952.cc: New test.
 601         * testsuite/20_util/uses_allocator/lwg3527.cc: New test.
 602
 603 2023-02-28  Jonathan Wakely  <jwakely@redhat.com>
 604
 605         PR libstdc++/108846
 606         * include/bits/stl_algobase.h (__copy_move<false, false, RA>)
 607         Add __assign_one static member function.
 608         (__copy_move<true, false, RA>): Likewise.
 609         (__copy_move<IsMove, true, RA>): Do not use memmove for a single
 610         value.
 611         (__copy_move_backward<IsMove, true, RA>): Likewise.
 612         * testsuite/25_algorithms/copy/108846.cc: New test.
 613         * testsuite/25_algorithms/copy_backward/108846.cc: New test.
 614         * testsuite/25_algorithms/copy_n/108846.cc: New test.
 615         * testsuite/25_algorithms/move/108846.cc: New test.
 616         * testsuite/25_algorithms/move_backward/108846.cc: New test.
 617
 618 2023-02-28  Jonathan Wakely  <jwakely@redhat.com>
 619
 620         * src/c++11/codecvt.cc: Add [[likely]] and [[unlikely]]
 621         attributes.
 622
 623 2023-02-27  Jonathan Wakely  <jwakely@redhat.com>
 624
 625         * include/bits/basic_ios.h (basic_ios::_M_setstate): Add
 626         caveat to comment.
 627         * include/bits/basic_string.h (resize_and_overwrite): Add
 628         doxygen comment.
 629
 630 2023-02-24  Matthias Kretz  <m.kretz@gsi.de>
 631
 632         * include/experimental/bits/simd.h: Line breaks and indenting
 633         fixed to follow the libstdc++ standard.
 634         * include/experimental/bits/simd_builtin.h: Likewise.
 635         * include/experimental/bits/simd_fixed_size.h: Likewise.
 636         * include/experimental/bits/simd_neon.h: Likewise.
 637         * include/experimental/bits/simd_ppc.h: Likewise.
 638         * include/experimental/bits/simd_scalar.h: Likewise.
 639         * include/experimental/bits/simd_x86.h: Likewise.
 640
 641 2023-02-24  Matthias Kretz  <m.kretz@gsi.de>
 642
 643         PR libstdc++/108030
 644         * include/experimental/bits/simd_fixed_size.h
 645         (_SimdImplFixedSize::_S_broadcast): Replace inline with
 646         _GLIBCXX_SIMD_INTRINSIC.
 647         (_SimdImplFixedSize::_S_generate): Likewise.
 648         (_SimdImplFixedSize::_S_load): Likewise.
 649         (_SimdImplFixedSize::_S_masked_load): Likewise.
 650         (_SimdImplFixedSize::_S_store): Likewise.
 651         (_SimdImplFixedSize::_S_masked_store): Likewise.
 652         (_SimdImplFixedSize::_S_min): Likewise.
 653         (_SimdImplFixedSize::_S_max): Likewise.
 654         (_SimdImplFixedSize::_S_complement): Likewise.
 655         (_SimdImplFixedSize::_S_unary_minus): Likewise.
 656         (_SimdImplFixedSize::_S_plus): Likewise.
 657         (_SimdImplFixedSize::_S_minus): Likewise.
 658         (_SimdImplFixedSize::_S_multiplies): Likewise.
 659         (_SimdImplFixedSize::_S_divides): Likewise.
 660         (_SimdImplFixedSize::_S_modulus): Likewise.
 661         (_SimdImplFixedSize::_S_bit_and): Likewise.
 662         (_SimdImplFixedSize::_S_bit_or): Likewise.
 663         (_SimdImplFixedSize::_S_bit_xor): Likewise.
 664         (_SimdImplFixedSize::_S_bit_shift_left): Likewise.
 665         (_SimdImplFixedSize::_S_bit_shift_right): Likewise.
 666         (_SimdImplFixedSize::_S_remquo): Add inline keyword (to be
 667         explicit about not always-inline, yet).
 668         (_SimdImplFixedSize::_S_isinf): Likewise.
 669         (_SimdImplFixedSize::_S_isfinite): Likewise.
 670         (_SimdImplFixedSize::_S_isnan): Likewise.
 671         (_SimdImplFixedSize::_S_isnormal): Likewise.
 672         (_SimdImplFixedSize::_S_signbit): Likewise.
 673
 674 2023-02-24  Matthias Kretz  <m.kretz@gsi.de>
 675
 676         PR libstdc++/108856
 677         * include/experimental/bits/simd_builtin.h
 678         (_SimdImplBuiltin::_S_masked_unary): More efficient
 679         implementation of masked inc-/decrement for integers and floats
 680         without AVX2.
 681         * include/experimental/bits/simd_x86.h
 682         (_SimdImplX86::_S_masked_unary): New. Use AVX512 masked subtract
 683         builtins for masked inc-/decrement.
 684
 685 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
 686
 687         * include/experimental/executor (executor): Constrain template
 688         constructors.
 689
 690 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
 691
 692         * include/experimental/internet (basic_endpoint): Add missing
 693         constexpr to comparison operators.
 694         * testsuite/experimental/net/internet/endpoint/cons.cc: New test.
 695
 696 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
 697
 698         * include/experimental/internet (network_v4::netmask()): Avoid
 699         undefined shift.
 700         (network_v4::broadcast()): Optimize and fix for targets with
 701         uint_least32_t wider than 32 bits.
 702         (network_v4::to_string(const Allocator&)): Fix for custom
 703         allocators and optimize using to_chars.
 704         (operator==(const network_v4&, const network_v4&)): Add missing
 705         constexpr.
 706         (operator==(const network_v6&, const network_v6&)): Likewise.
 707         * testsuite/experimental/net/internet/network/v4/cons.cc: New test.
 708         * testsuite/experimental/net/internet/network/v4/members.cc: New test.
 709
 710 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
 711
 712         * include/experimental/internet (address_4(const bytes_type&)):
 713         Use __builtin_bit_cast if available, otherwise convert to
 714         network byte order.
 715         (address_v4::to_bytes()): Likewise, but convert from network
 716         byte order.
 717         * testsuite/experimental/net/internet/address/v4/cons.cc: Fix
 718         incorrect tests. Check for constexpr too.
 719         * testsuite/experimental/net/internet/address/v4/creation.cc:
 720         Likewise.
 721         * testsuite/experimental/net/internet/address/v4/members.cc:
 722         Check that bytes_type is a standard-layout type.
 723
 724 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
 725
 726         * include/experimental/internet (address_v4::to_string):
 727         Optimize.
 728         * testsuite/experimental/net/internet/address/v4/members.cc:
 729         Check more addresses.
 730
 731 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
 732
 733         * include/ext/aligned_buffer.h (__aligned_buffer): Add
 734         diagnostic pragmas.
 735
 736 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
 737
 738         * testsuite/std/format/arguments/lwg3810.cc: Move dg-options
 739         before dg-do.
 740
 741 2023-02-23  Matthias Kretz  <m.kretz@gsi.de>
 742
 743         * testsuite/experimental/simd/tests/reductions.cc: Introduce
 744         max_distance as the type-dependent max error.
 745
 746 2023-02-23  Matthias Kretz  <m.kretz@gsi.de>
 747
 748         * include/experimental/bits/simd_builtin.h (_S_set): Compare as
 749         int. The actual range of these indexes is very small.
 750
 751 2023-02-23  Matthias Kretz  <m.kretz@gsi.de>
 752
 753         * include/experimental/bits/simd_x86.h (_S_bit_shift_left)
 754         (_S_bit_shift_right): Declare constexpr. The implementation was
 755         already expecting constexpr evaluation.
 756
 757 2023-02-23  Matthias Kretz  <m.kretz@gsi.de>
 758
 759         PR libstdc++/108030
 760         * include/experimental/bits/simd_detail.h
 761         (_GLIBCXX_SIMD_ALWAYS_INLINE_LAMBDA): Define as empty for
 762         __clang__.
 763
 764 2023-02-23  Matthias Kretz  <m.kretz@gsi.de>
 765
 766         PR libstdc++/108030
 767         * include/experimental/bits/simd.h (__vector_broadcast):
 768         Implement via __vector_broadcast_impl instead of
 769         __call_with_n_evaluations + 2 lambdas.
 770         (__vector_broadcast_impl): New.
 771
 772 2023-02-22  Alexandre Oliva  <oliva@adacore.com>
 773
 774         * src/c++11/shared_ptr.cc (__gnu_internal::get_mutex):
 775         Avoid destruction of the mutex pool.
 776
 777 2023-02-22  Alexandre Oliva  <oliva@adacore.com>
 778
 779         * testsuite/27_io/basic_ofstream/open/char/noreplace.cc: xfail
 780         on vxworks.
 781         * testsuite/27_io/basic_ofstream/open/wchar_t/noreplace.cc:
 782         Likewise.
 783
 784 2023-02-22  Alexandre Oliva  <oliva@adacore.com>
 785
 786         * testsuite/17_intro/names.cc: Undef func on vxworks >= 7 in
 787         kernel mode.
 788
 789 2023-02-20  Andreas Schwab  <schwab@linux-m68k.org>
 790
 791         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
 792
 793 2023-02-20  Matthias Kretz  <m.kretz@gsi.de>
 794
 795         * include/experimental/bits/simd.h (__extract_part, split):
 796         Use reserved name for template parameter.
 797
 798 2023-02-20  Andreas Schwab  <schwab@suse.de>
 799
 800         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
 801
 802 2023-02-18  Gerald Pfeifer  <gerald@pfeifer.com>
 803
 804         * doc/xml/faq.xml: Switch two links to www.open-std.org to https.
 805         * doc/html/faq.html: Regenerate.
 806
 807 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
 808
 809         * include/experimental/bits/simd_math.h (__hypot): Bitcasting
 810         between scalars requires the __bit_cast helper function instead
 811         of simd_bit_cast.
 812
 813 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
 814
 815         * include/experimental/bits/simd_x86.h
 816         (_SimdImplX86::_S_not_equal_to, _SimdImplX86::_S_less)
 817         (_SimdImplX86::_S_less_equal): Do not call
 818         __builtin_is_constant_evaluated in constexpr-if.
 819
 820 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
 821
 822         * testsuite/experimental/simd/tests/bits/verify.h
 823         (verify::verify): Use %zx for size_t in format string.
 824
 825 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
 826
 827         * testsuite/experimental/simd/generate_makefile.sh: Generate and
 828         pre-compile pch.h, which includes all headers that do not depend
 829         on command-line macros.
 830         * testsuite/experimental/simd/tests/bits/main.h: New file.
 831         (iterate_abis, main): Moved from verify.h.
 832         * testsuite/experimental/simd/tests/bits/verify.h
 833         (iterate_abis, main): Moved to main.h.
 834         * testsuite/experimental/simd/tests/bits/conversions.h: Add
 835         include guard.
 836         (genHalfBits): Simplify.
 837         * testsuite/experimental/simd/tests/bits/make_vec.h: Add include
 838         guard.
 839         (make_alternating_mask): Moved from mask_loadstore.
 840         * testsuite/experimental/simd/tests/bits/mathreference.h: Add
 841         include guard.
 842         * testsuite/experimental/simd/tests/bits/test_values.h: Ditto.
 843         * testsuite/experimental/simd/tests/mask_loadstore.cc
 844         (make_mask, make_alternating_mask): Removed.
 845         * testsuite/experimental/simd/tests/mask_reductions.cc: Ditto.
 846         * testsuite/experimental/simd/tests/operators.cc (genHalfBits):
 847         Removed.
 848         * testsuite/experimental/simd/tests/abs.cc: Only include
 849         bits/main.h.
 850         Ditto.
 851         * testsuite/experimental/simd/tests/algorithms.cc: Ditto.
 852         * testsuite/experimental/simd/tests/broadcast.cc: Ditto.
 853         * testsuite/experimental/simd/tests/casts.cc: Ditto.
 854         * testsuite/experimental/simd/tests/fpclassify.cc: Ditto.
 855         * testsuite/experimental/simd/tests/frexp.cc: Ditto.
 856         * testsuite/experimental/simd/tests/generator.cc: Ditto.
 857         * testsuite/experimental/simd/tests/hypot3_fma.cc: Ditto.
 858         * testsuite/experimental/simd/tests/integer_operators.cc: Ditto.
 859         * testsuite/experimental/simd/tests/ldexp_scalbn_scalbln_modf.cc:
 860         * testsuite/experimental/simd/tests/loadstore.cc: Ditto.
 861         * testsuite/experimental/simd/tests/logarithm.cc: Ditto.
 862         * testsuite/experimental/simd/tests/mask_broadcast.cc: Ditto.
 863         * testsuite/experimental/simd/tests/mask_conversions.cc: Ditto.
 864         * testsuite/experimental/simd/tests/mask_implicit_cvt.cc: Ditto.
 865         * testsuite/experimental/simd/tests/mask_operator_cvt.cc: Ditto.
 866         * testsuite/experimental/simd/tests/mask_operators.cc: Ditto.
 867         * testsuite/experimental/simd/tests/math_1arg.cc: Ditto.
 868         * testsuite/experimental/simd/tests/math_2arg.cc: Ditto.
 869         * testsuite/experimental/simd/tests/operator_cvt.cc: Ditto.
 870         * testsuite/experimental/simd/tests/reductions.cc: Ditto.
 871         * testsuite/experimental/simd/tests/remqo.cc: Ditto.
 872         * testsuite/experimental/simd/tests/simd.cc: Ditto.
 873         * testsuite/experimental/simd/tests/sincos.cc: Ditto.
 874         * testsuite/experimental/simd/tests/split_concat.cc: Ditto.
 875         * testsuite/experimental/simd/tests/splits.cc: Ditto.
 876         * testsuite/experimental/simd/tests/trigonometric.cc: Ditto.
 877         * testsuite/experimental/simd/tests/trunc_ceil_floor.cc: Ditto.
 878         * testsuite/experimental/simd/tests/where.cc: Ditto.
 879
 880 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
 881
 882         * testsuite/experimental/simd/README.md: Document the timeout
 883         and timeout-factor directives. Minor typo fixed.
 884
 885 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
 886
 887         PR libstdc++/108030
 888         * include/experimental/bits/simd_detail.h: Define
 889         _GLIBCXX_SIMD_ALWAYS_INLINE_LAMBDA.
 890         * include/experimental/bits/simd.h: Annotate lambdas with
 891         _GLIBCXX_SIMD_ALWAYS_INLINE_LAMBDA.
 892         * include/experimental/bits/simd_builtin.h: Ditto.
 893         * include/experimental/bits/simd_converter.h: Ditto.
 894         * include/experimental/bits/simd_fixed_size.h: Ditto.
 895         * include/experimental/bits/simd_math.h: Ditto.
 896         * include/experimental/bits/simd_neon.h: Ditto.
 897         * include/experimental/bits/simd_x86.h: Ditto.
 898
 899 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
 900
 901         * include/experimental/bits/simd.h
 902         (_SimdWrapper::_M_is_constprop_none_of)
 903         (_SimdWrapper::_M_is_constprop_all_of): Return false unless the
 904         computed result still satisfies __builtin_constant_p.
 905
 906 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
 907
 908         * testsuite/std/format/arguments/lwg3810.cc: Replace UTF-8
 909         ellipsis character.
 910
 911 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
 912
 913         * include/Makefile.am: Add new header.
 914         * include/Makefile.in: Regenerate.
 915         * include/experimental/synchronized_value: New file.
 916         * testsuite/experimental/synchronized_value.cc: New test.
 917
 918 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
 919
 920         * include/experimental/optional: Fix header name in comment.
 921
 922 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
 923
 924         * include/std/format (__format::_Arg_store): New class template.
 925         (basic_format_args): Remove nested type _Store and add deduction
 926         guide from _Arg_store.
 927         (basic_format_arg, make_format_args): Adjust.
 928         * testsuite/std/format/arguments/lwg3810.cc: New test.
 929
 930 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
 931
 932         * include/bits/stl_pair.h (pair) [C++20]: Add non-dangling
 933         constraints to constructors and add deleted overloads for the
 934         dangling cases, as per P2255R2.
 935         (pair) [!C++20 && _GLIBCXX_DEBUG]: Add static assertions to
 936         make dangling cases ill-formed.
 937         * testsuite/20_util/pair/dangling_ref.cc: New test.
 938
 939 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
 940
 941         * testsuite/17_intro/names_pstl.cc: Require et tbb_backend.
 942
 943 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
 944
 945         * include/ext/throw_allocator.h: Use reserved names for
 946         parameters.
 947
 948 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
 949
 950         * testsuite/17_intro/names_pstl.cc: Add space after effective
 951         target name.
 952
 953 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
 954
 955         * include/pstl/algorithm_fwd.h (__pattern_search_n)
 956         (__brick_unique_copy, __brick_adjacent_find)
 957         (__brick_generate_n, __pattern_generate_n): Use reserved names
 958         for parameters.
 959         * include/pstl/algorithm_impl.h (__brick_unique_copy)
 960         (__pattern_reverse, __brick_generate_n): Likewise.
 961         * include/pstl/execution_impl.h (__prefer_unsequenced_tag)
 962         (__prefer_parallel_tag): Likewise.
 963         * include/pstl/glue_algorithm_impl.h (transform): Likewise.
 964         * include/pstl/glue_numeric_defs.h (adjacent_difference):
 965         Likewise.
 966         * include/pstl/numeric_impl.h (__brick_adjacent_difference):
 967         Likewise.
 968         * include/pstl/parallel_backend_tbb.h (__merge_func): Likewise.
 969         * include/pstl/unseq_backend_simd.h (_Combiner)
 970         (__simd_min_element, __simd_minmax_element): Likewise.
 971         * testsuite/17_intro/names_pstl.cc: New test.
 972
 973 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
 974
 975         * include/bits/fs_ops.h (create_directory): Use reserved name
 976         for parameter.
 977         * include/bits/ranges_algo.h (__contains_subrange_fn):
 978         Likewise.
 979         * include/bits/regex_automaton.h (_State_base::_M_print):
 980         Likewise.
 981         * include/bits/regex_automaton.tcc(_State_base::_M_print):
 982         Likewise.
 983         * include/bits/regex_scanner.tcc(_Scanner::_M_print): Likewise.
 984         * include/experimental/bits/fs_ops.h (create_directory):
 985         Likewise.
 986         * include/std/mutex (timed_mutex::_M_clocklock): Likewise.
 987         (recursive_timed_mutex:_M_clocklock): Likewise.
 988         * include/std/tuple (basic_common_reference): Likewise.
 989         * libsupc++/cxxabi_init_exception.h
 990         (__cxa_init_primary_exception): Likewise.
 991         * testsuite/17_intro/names.cc: Add checks.
 992
 993 2023-02-14  Gerald Pfeifer  <gerald@pfeifer.com>
 994
 995         * doc/xml/manual/status_cxx2017.xml: Update an open-std.org link
 996         to www.open-std.org and https.
 997         * doc/html/manual/status.html: Regenerate.
 998
 999 2023-02-14  Thomas W Rodgers  <rodgert@twrodgers.com>
1000
1001         PR libstdc++/103934
1002         * include/std/atomic (atomic_flag_wait): Add.
1003         (atomic_flag_wait_explicit): Add.
1004         (atomic_flag_notify): Add.
1005         (atomic_flag_notify_explicit): Add.
1006         * testsuite/29_atomics/atomic_flag/wait_notify/1.cc:
1007         Add test case to cover missing atomic_flag free functions.
1008
1009 2023-02-14  Thomas W Rodgers  <rodgert@twrodgers.com>
1010
1011         PR libstdc++/103934
1012         * include/std/atomic (atomic_flag_test): Add.
1013         (atomic_flag_test_explicit): Add.
1014         * testsuite/29_atomics/atomic_flag/test/explicit.cc: Add
1015         test case to cover missing atomic_flag free functions.
1016         * testsuite/29_atomics/atomic_flag/test/implicit.cc:
1017         Likewise.
1018
1019 2023-02-13  Gerald Pfeifer  <gerald@pfeifer.com>
1020
1021         * doc/xml/manual/policy_data_structures_biblio.xml: Adjust
1022         "The Component Object Model" reference.
1023         * doc/html/manual/policy_data_structures.html: Regenerate.
1024
1025 2023-02-12  Gerald Pfeifer  <gerald@pfeifer.com>
1026
1027         * doc/xml/manual/containers.xml: Tweak a link to N1780
1028         (C++ standard).
1029         * doc/html/manual/associative.html: Regenerate.
1030
1031 2023-02-12  Gerald Pfeifer  <gerald@pfeifer.com>
1032
1033         * doc/xml/manual/ctype.xml: Change www.unix.org to unix.org.
1034         * doc/html/manual/facets.html: Regenerate.
1035
1036 2023-02-11  Gerald Pfeifer  <gerald@pfeifer.com>
1037
1038         * doc/xml/manual/policy_data_structures_biblio.xml: Update
1039         link to "Worst-case efficient priority queues".
1040         * doc/html/manual/policy_data_structures.html: Regenerate.
1041
1042 2023-02-06  Arsen Arsenović  <arsen@aarsen.me>
1043
1044         * doc/xml/manual/using.xml: Document newly-freestanding
1045         headers and the effect of the -ffreestanding flag.
1046         * doc/xml/manual/status_cxx2023.xml: Document P1642R11 as
1047         completed.
1048         * doc/xml/manual/configure.xml: Document that hosted installs
1049         respect __STDC_HOSTED__.
1050         * doc/xml/manual/test.xml: Document how to run tests in
1051         freestanding mode.
1052         * doc/html/*: Regenerate.
1053
1054 2023-02-06  Jonathan Wakely  <jwakely@redhat.com>
1055
1056         * include/bits/ranges_algo.h (__find_last_fn): Rename T to _Tp.
1057         (__find_last_if_fn): Likewise.
1058
1059 2023-02-06  Jonathan Wakely  <jwakely@redhat.com>
1060
1061         * include/std/type_traits: Add diagnostic pragmas around
1062         references to deprecated std::aligned_storage and
1063         std::aligned_union traits.
1064         * testsuite/20_util/aligned_storage/requirements/alias_decl.cc:
1065         Add dg-warning for et c++23.
1066         * testsuite/20_util/aligned_storage/requirements/explicit_instantiation.cc:
1067         Likewise.
1068         * testsuite/20_util/aligned_storage/value.cc: Likewise.
1069         * testsuite/20_util/aligned_union/1.cc: Likewise.
1070         * testsuite/20_util/aligned_union/requirements/alias_decl.cc:
1071         Likewise.
1072
1073 2023-02-06  Nathaniel Shead  <nathanieloshead@gmail.com>
1074
1075         * doc/doxygen/user.cfg.in (PREDEFINED): Add new macros.
1076         * include/bits/c++config (_GLIBCXX23_DEPRECATED)
1077         (_GLIBCXX23_DEPRECATED_SUGGEST): New macros.
1078         * include/std/type_traits (aligned_storage, aligned_union)
1079         (aligned_storage_t, aligned_union_t): Deprecate for C++23.
1080         * testsuite/20_util/aligned_storage/deprecated-2b.cc: New test.
1081         * testsuite/20_util/aligned_union/deprecated-2b.cc: New test.
1082
1083 2023-02-06  Nathaniel Shead  <nathanieloshead@gmail.com>
1084
1085         * doc/doxygen/user.cfg.in (PREDEFINED): Update macros.
1086         * include/bits/c++config (_GLIBCXX20_DEPRECATED): Make
1087         consistent with other 'deprecated' macros.
1088         * include/std/type_traits (is_pod, is_pod_v): Use
1089         _GLIBCXX20_DEPRECATED_SUGGEST instead.
1090
1091 2023-02-06  Arsen Arsenović  <arsen@aarsen.me>
1092
1093         * Makefile.am [!_GLIBCXX_HOSTED]: Enable src/ subdirectory.
1094         * Makefile.in: Regenerate.
1095         * src/Makefile.am [!_GLIBCXX_HOSTED]: Omit compatibility files.
1096         There's no history to be compatible with.
1097         * src/c++11/Makefile.am [!_GLIBCXX_HOSTED]: Omit hosted-only
1098         source files from the build.
1099         * src/c++17/Makefile.am [!_GLIBCXX_HOSTED]: Likewise.
1100         * src/c++20/Makefile.am [!_GLIBCXX_HOSTED]: Likewise.
1101         * src/c++98/Makefile.am [!_GLIBCXX_HOSTED]: Likewise.
1102         * src/Makefile.in: Regenerate.
1103         * src/c++11/Makefile.in: Regenerate.
1104         * src/c++17/Makefile.in: Regenerate.
1105         * src/c++20/Makefile.in: Regenerate.
1106         * src/c++98/Makefile.in: Regenerate.
1107
1108 2023-02-06  Jonathan Wakely  <jwakely@redhat.com>
1109
1110         * src/Makefile.am [GLIBCXX_HOSTED] (SUBDIRS): Do not add
1111         filesystem, libbacktrace and experimental.
1112         * src/Makefile.in: Regenerate.
1113
1114 2023-02-04  Hans-Peter Nilsson  <hp@axis.com>
1115
1116         PR libstdc++/108672
1117         * include/pstl/unseq_backend_simd.h (__simd_or): Use __INT32_TYPE__
1118         instead of int32_t.
1119
1120 2023-02-04  Gerald Pfeifer  <gerald@pfeifer.com>
1121
1122         * doc/xml/manual/documentation_hacking.xml: Adjust link to pdftex.
1123         * doc/html/manual/documentation_hacking.html: Regenerate.
1124
1125 2023-02-04  François Dumont  <fdumont@gcc.gnu.org>
1126
1127         * include/bits/basic_string.h (operator=(basic_string&&)): Transfer move-to
1128         storage to the move-from instance when allocators are equal.
1129         * testsuite/21_strings/basic_string/allocator/char/move_assign.cc (test04):
1130         New test case.
1131
1132 2023-02-03  Samuel Thibault  <samuel.thibault@gnu.org>
1133
1134         * config/os/gnu-linux/os_defines.h [!__linux__]
1135         (_GLIBCXX_NATIVE_THREAD_ID, _GLIBCXX_GTHREAD_USE_WEAK): Do not define.
1136
1137 2023-02-03  Patrick Palka  <ppalka@redhat.com>
1138
1139         * include/bits/ranges_algo.h (__find_last_fn, find_last):
1140         Define.
1141         (__find_last_if_fn, find_last_if): Define.
1142         (__find_last_if_not_fn, find_last_if_not): Define.
1143         * testsuite/25_algorithms/find_last/1.cc: New test.
1144         * testsuite/25_algorithms/find_last_if/1.cc: New test.
1145         * testsuite/25_algorithms/find_last_if_not/1.cc: New test.
1146
1147 2023-02-03  Patrick Palka  <ppalka@redhat.com>
1148
1149         * include/bits/ranges_algo.h (out_value_result): Define.
1150         (iota_result): Define.
1151         (__iota_fn, iota): Define.
1152         * testsuite/25_algorithms/iota/1.cc: New test.
1153
1154 2023-02-03  Patrick Palka  <ppalka@redhat.com>
1155
1156         * include/bits/ranges_algo.h (__contains_fn, contains): Define.
1157         (__contains_subrange_fn, contains_subrange): Define.
1158         * testsuite/25_algorithms/contains/1.cc: New test.
1159         * testsuite/25_algorithms/contains_subrange/1.cc: New test.
1160
1161 2023-02-02  Gerald Pfeifer  <gerald@pfeifer.com>
1162
1163         * doc/xml/manual/abi.xml: Tweak link to ABIcheck project.
1164         * doc/html/manual/abi.html: Regenerate.
1165
1166 2023-02-02  Jonathan Wakely  <jwakely@redhat.com>
1167
1168         * src/filesystem/ops-common.h [AVR] (__unsupported): Always use
1169         errc::function_not_supported instead of errc::not_supported.
1170
1171 2023-02-02  Jonathan Wakely  <jwakely@redhat.com>
1172
1173         * include/std/sstream  (basic_stringbuf::view): Define for old
1174         std::string ABI.
1175         (basic_istringstream::view, basic_0stringstream::view)
1176         (basic_stringstream::view): Likewise.
1177         * testsuite/27_io/basic_istringstream/view/char/1.cc: Remove
1178         { dg-require-effective-target cxx11_abi }.
1179         * testsuite/27_io/basic_istringstream/view/wchar_t/1.cc:
1180         Likewise.
1181         * testsuite/27_io/basic_ostringstream/view/char/1.cc: Likewise.
1182         * testsuite/27_io/basic_ostringstream/view/wchar_t/1.cc:
1183         Likewise.
1184         * testsuite/27_io/basic_stringbuf/view/char/1.cc: Likewise.
1185         * testsuite/27_io/basic_stringbuf/view/wchar_t/1.cc: Likewise.
1186         * testsuite/27_io/basic_stringstream/view/char/1.cc: Likewise.
1187         * testsuite/27_io/basic_stringstream/view/wchar_t/1.cc:
1188         Likewise.
1189
1190 2023-02-02  Jonathan Wakely  <jwakely@redhat.com>
1191
1192         PR libstdc++/108636
1193         * config/abi/pre/gnu.ver (GLIBCXX_3.4.31): Export shared_ptr
1194         conversion operators for directory iterator comparisons with
1195         std::default_sentinel_t.
1196         * include/bits/fs_path.h (path::path(string_view, _Type))
1197         (path::_Cmpt::_Cmpt(string_view, _Type, size_t)): Move inline
1198         definitions to ...
1199         * src/c++17/fs_path.cc: ... here.
1200         * testsuite/27_io/filesystem/path/108636.cc: New test.
1201
1202 2023-02-02  Jonathan Wakely  <jwakely@redhat.com>
1203
1204         * include/std/variant (variant::operator=): Implement resolution
1205         of LWG 3585.
1206         * testsuite/20_util/variant/lwg3585.cc: New test.
1207
1208 2023-02-02  Gerald Pfeifer  <gerald@pfeifer.com>
1209
1210         * doc/xml/manual/using_exceptions.xml: Update a www.open-std.org
1211         link to https.
1212         * doc/html/manual/using_exceptions.html: Regenerate.
1213
1214 2023-02-02  Gerald Pfeifer  <gerald@pfeifer.com>
1215
1216         * doc/xml/manual/debug.xml: Fix link to online GDB manual.
1217         * doc/html/manual/debug.html: Regenerate.
1218
1219 2023-02-01  Jonathan Wakely  <jwakely@redhat.com>
1220
1221         * src/c++11/random.cc (random_device::_M_fini): Do not try to
1222         close the file handle if the target doesn't support the
1223         /dev/random and /dev/urandom files.
1224
1225 2023-02-01  Jonathan Wakely  <jwakely@redhat.com>
1226
1227         * config/os/generic/error_constants.h (errc::value_too_large)
1228         [__AVR__]: Define.
1229         * src/c++11/system_error.cc
1230         (system_category::default_error_condition) [__AVR__]: Only match
1231         recognize values equal to EDOM, ERANGE, ENOSYS and EINTR.
1232         * src/c++17/fs_ops.cc (fs::current_path) [__AVR__]: Do not check
1233         for ENOENT etc. in switch.
1234         (fs::remove_all) [__AVR__]: Likewise.
1235         * src/filesystem/ops-common.h [__AVR__]: Do not use POSIX open,
1236         close etc.
1237
1238 2023-02-01  Jonathan Wakely  <jwakely@redhat.com>
1239
1240         * acinclude.m4 (GLIBCXX_ZONEINFO_DIR) [avr-*-*, msp430-*-*]: Set
1241         embed_zoneinfo=no
1242         * configure: Regenerate.
1243
1244 2023-02-01  Hans-Peter Nilsson  <hp@axis.com>
1245
1246         PR testsuite/108632
1247         * testsuite/std/time/hh_mm_ss/1.cc (size): Add empty
1248         struct at end of S0.
1249
1250 2023-01-30  Gerald Pfeifer  <gerald@pfeifer.com>
1251
1252         * doc/xml/manual/shared_ptr.xml: Move links from both
1253         http://open-std.org and http://www.open-std.org to
1254         https://www.open-std.org.
1255         * doc/html/manual/memory.html: Regenerate.
1256
1257 2023-01-28  Gerald Pfeifer  <gerald@pfeifer.com>
1258
1259         * doc/xml/manual/appendix_contributing.xml: Adjust link to
1260         ISO C++ standard at ANSI.
1261         Move link to www.open-std.org to https.
1262         * doc/html/manual/appendix_contributing.html: Regenerate.
1263
1264 2023-01-28  Gerald Pfeifer  <gerald@pfeifer.com>
1265
1266         * doc/xml/manual/documentation_hacking.xml: Move sourceforge.net
1267         links to https.
1268         * doc/html/manual/documentation_hacking.html: Regenerate.
1269
1270 2023-01-28  Gerald Pfeifer  <gerald@pfeifer.com>
1271
1272         * doc/xml/manual/abi.xml: Update www.open-std.org link to https.
1273         * doc/html/manual/abi.html: Regenerate.
1274
1275 2023-01-27  Jakub Jelinek  <jakub@redhat.com>
1276
1277         PR libstdc++/108568
1278         * testsuite/17_intro/names.cc (__unused): For linux or GNU hurd
1279         include features.h if present and then check __GLIBC__ and
1280         __GLIBC_MINOR__ macros for glibc prior to 2.19, instead of testing
1281         __GLIBC_PREREQ which isn't defined yet.
1282
1283 2023-01-27  Jonathan Wakely  <jwakely@redhat.com>
1284
1285         * src/c++20/tzdb.cc (tzdata_stream): Use constant instead of
1286         string literal.
1287
1288 2023-01-27  Jonathan Wakely  <jwakely@redhat.com>
1289
1290         PR libstdc++/108554
1291         * testsuite/23_containers/map/modifiers/108554.cc: Use dg-bogus.
1292
1293 2023-01-26  Jonathan Wakely  <jwakely@redhat.com>
1294
1295         * src/c++20/tzdb.cc (operator>>(istream&, ZoneInfo&)): Allow
1296         rules named "+" for compatibility with older tzdata.zi files.
1297
1298 2023-01-26  Jonathan Wakely  <jwakely@redhat.com>
1299
1300         PR libstdc++/108554
1301         * include/bits/stl_tree.h (_Rb_tree_insert_and_rebalance): Add
1302         nonnull attribute.
1303         (_Rb_tree_rebalance_for_erase): Add nonnull and returns_nonnull
1304         attributes.
1305         * testsuite/23_containers/map/modifiers/108554.cc: New test.
1306
1307 2023-01-26  Jonathan Wakely  <jwakely@redhat.com>
1308
1309         PR libstdc++/108530
1310         * src/c++20/tzdb.cc (current_zone): Look for TIMEZONE or ZONE in
1311         /etc/sysconfig/clock, not DEFAULT_TIMEZONE.
1312
1313 2023-01-26  Gerald Pfeifer  <gerald@pfeifer.com>
1314
1315         * doc/xml/manual/intro.xml: Update links to www.open-std.org to
1316         use https.
1317         * doc/html/manual/bugs.html: Regenerate.
1318
1319 2023-01-24  Jonathan Wakely  <jwakely@redhat.com>
1320
1321         PR libstdc++/108530
1322         * src/c++20/tzdb.cc (current_zone): Look for DEFAULT_TIMEZONE in
1323         /etc/sysconfig/clock.
1324
1325 2023-01-24  Jonathan Wakely  <jwakely@redhat.com>
1326
1327         PR libstdc++/102301
1328         * include/bits/ranges_base.h: Include <bits/stl_iterator.h> for
1329         std::make_reverse_iterator.
1330         * include/std/tuple: Include <bits/ranges_util.h> for subrange.
1331         (make_from_tuple): Add static assertion from P2255 to diagnose
1332         dangling references.
1333         * testsuite/20_util/tuple/make_from_tuple/dangling_ref.cc: New test.
1334         * testsuite/20_util/tuple/make_from_tuple/tuple_like.cc: New test.
1335
1336 2023-01-23  François Dumont  <fdumont@gcc.gnu.org>
1337
1338         * include/debug/safe_iterator.h (_Safe_iterator<>::_Unchecked): New.
1339         (_Safe_iterator(const _Safe_iterator&, _Unchecked)): New.
1340         (_Safe_iterator::operator++(int)): Use latter.
1341         (_Safe_iterator::operator--(int)): Likewise.
1342         (_Safe_iterator(_Iterator, const _Safe_sequence_base*)): Remove !_M_insular()
1343         check.
1344         * include/debug/safe_local_iterator.h (_Safe_local_iterator<>::_Unchecked):
1345         New.
1346         (_Safe_local_iterator(const _Safe_local_iterator&, _Unchecked)): New.
1347         (_Safe_local_iterator::operator++(int)): Use latter.
1348         * src/c++11/debug.cc (_S_debug_messages): Add as comment the _Debug_msg_id
1349         entry associated to the array entry.
1350
1351 2023-01-18  Jonathan Wakely  <jwakely@redhat.com>
1352
1353         * include/bits/fs_path.h (u8path): Add deprecated attribute.
1354         * testsuite/27_io/filesystem/path/construct/90281.cc: Add
1355         -Wno-deprecated-declarations for C++20 and later.
1356         * testsuite/27_io/filesystem/path/factory/u8path-char8_t.cc:
1357         Likewise.
1358         * testsuite/27_io/filesystem/path/factory/u8path.cc: Likewise.
1359         * testsuite/27_io/filesystem/path/native/string.cc: Likewise.
1360         * testsuite/27_io/filesystem/path/factory/u8path-depr.cc: New test.
1361
1362 2023-01-18  Jonathan Wakely  <jwakely@redhat.com>
1363
1364         * include/bits/random.h (random_device) [!_GLIBCXX_USE_DEV_RANDOM]:
1365         Always call _M_fini and _M_getentropy.
1366
1367 2023-01-18  Gerald Pfeifer  <gerald@pfeifer.com>
1368
1369         * doc/xml/manual/policy_data_structures_biblio.xml: Adjust links
1370         to www.open-std.org to use https.
1371         (COM: Component Model Object Technologies): Rename from...
1372         (The Component Object Model): ...to.
1373         * doc/html/manual/policy_data_structures.html: Regenerate.
1374
1375 2023-01-18  Dimitrij Mijoski  <dmjpp@hotmail.com>
1376
1377         * testsuite/22_locale/codecvt/codecvt_unicode.cc: Simplify.
1378         * testsuite/22_locale/codecvt/codecvt_unicode.h: Simplify.
1379         * testsuite/22_locale/codecvt/codecvt_unicode_wchar_t.cc: Simplify.
1380
1381 2023-01-17  Jonathan Wakely  <jwakely@redhat.com>
1382
1383         * acinclude.m4 (GLIBCXX_ZONEINFO_DIR): Check $target_os instead
1384         of $host. Fix check for file being present during native build.
1385         * configure: Regenerate.
1386
1387 2023-01-17  Martin Liska  <mliska@suse.cz>
1388
1389         * src/libbacktrace/Makefile.in: Regenerate.
1390
1391 2023-01-16  Jonathan Wakely  <jwakely@redhat.com>
1392
1393         * src/c++20/tzdb.cc (_GLIBCXX_USE_CXX11_ABI): Define to 1.
1394
1395 2023-01-16  Jonathan Wakely  <jwakely@redhat.com>
1396
1397         PR libstdc++/108413
1398         * include/c_compatibility/stdatomic.h: Change copyright line to
1399         be consistent with other headers contributed under DCO terms.
1400         * include/std/expected: Add full stop to copyright line.
1401         * src/c++20/tzdb.cc: Likewise.
1402
1403 2023-01-15  Gerald Pfeifer  <gerald@pfeifer.com>
1404
1405         * doc/xml/manual/status_cxx2014.xml: Switch www.open-std.org to
1406         https.
1407         * doc/xml/manual/status_cxx2017.xml: Ditto.
1408         * doc/xml/manual/status_cxx2020.xml: Ditto.
1409         * doc/xml/manual/status_cxx2023.xml: Ditto.
1410         * doc/html/manual/status.html: Regenerate.
1411
1412 2023-01-15  Jonathan Wakely  <jwakely@redhat.com>
1413
1414         * testsuite/std/time/tzdb_list/1.cc: Remove dg-xfail-run-if
1415         and fail gracefully if defining the weak symbol doesn't work.
1416
1417 2023-01-15  François Dumont  <fdumont@gcc.gnu.org>
1418
1419         PR libstdc++/108288
1420         * include/debug/safe_iterator.h (_Safe_iterator<>::operator++(int)): Extend deadlock
1421         fix to other iterator category.
1422         (_Safe_iterator<>::operator--(int)): Likewise.
1423         * include/debug/safe_local_iterator.h (_Safe_local_iterator<>::operator++(int)):
1424         Fix deadlock.
1425         * testsuite/util/debug/unordered_checks.h (invalid_local_iterator_pre_increment): New.
1426         (invalid_local_iterator_post_increment): New.
1427         * testsuite/23_containers/unordered_map/debug/invalid_local_iterator_post_increment_neg.cc:
1428         New test.
1429         * testsuite/23_containers/unordered_map/debug/invalid_local_iterator_pre_increment_neg.cc:
1430         New test.
1431
1432 2023-01-15  Jonathan Wakely  <jwakely@redhat.com>
1433
1434         * testsuite/30_threads/jthread/jthread.cc: Remove -pthread from
1435         dg-options.
1436
1437 2023-01-15  Jonathan Wakely  <jwakely@redhat.com>
1438
1439         * testsuite/std/time/clock/utc/io.cc: Use ctype to widen char.
1440
1441 2023-01-14  Björn Schäpers  <bjoern@hazardy.de>
1442
1443         * acinclude.m4 (GLIBCXX_ENABLE_BACKTRACE): Add check for
1444         windows.h. Add pecoff as FORMAT_FILE.
1445         * config.h.in: Regenerate.
1446         * configure: Regenerate.
1447         * src/libbacktrace/Makefile.am: Regenerate.
1448         * src/libbacktrace/Makefile.in: Add pecoff.c as FORMAT_FILE.
1449
1450 2023-01-14  Björn Schäpers  <bjoern@hazardy.de>
1451
1452         * include/std/stacktrace (stacktrace_entry::_S_demangle): Use
1453         raw __name if __cxa_demangle could not demangle it.
1454
1455 2023-01-14  Jonathan Wakely  <jwakely@redhat.com>
1456
1457         PR libstdc++/108409
1458         * src/c++20/tzdb.cc (current_zone()) [_AIX]: Use TZ environment
1459         variable.
1460
1461 2023-01-14  Jonathan Wakely  <jwakely@redhat.com>
1462
1463         * src/c++20/tzdb.cc (TZDB_DISABLED): Disable all code for
1464         loading tzdb.
1465         * testsuite/std/time/tzdb/leap_seconds.cc: Require tzdb
1466         effective target.
1467         * testsuite/std/time/tzdb_list/1.cc: Likewise.
1468
1469 2023-01-14  Jonathan Wakely  <jwakely@redhat.com>
1470
1471         * acinclude.m4 (GLIBCXX_ZONEINFO_DIR): Replace the
1472         --with-libstdcxx-zoneinfo-dir configure option with
1473         --with-libstdcxx-zoneinfo with yes/no/static choices as well as
1474         a directory.
1475         * config.h.in: Regenerate.
1476         * configure: Regenerate.
1477         * doc/xml/manual/configure.xml: Document configure option.
1478         * doc/html/manual/configure.html: Regenerate.
1479         * src/c++20/Makefile.am: Generate tzdata.zi.h header.
1480         * src/c++20/Makefile.in: Regenerate.
1481         * src/c++20/tzdb.cc (__gnu_cxx::zoneinfo_dir_override): Return a
1482         null pointer if no directory is configured.
1483         (zoneinfo_dir): Replace with ...
1484         (zoneinfo_file): New function.
1485         (tzdata_stream): New istream class.
1486         (remote_version, reload_tzdb): Use tzdata_stream.
1487         * testsuite/lib/libstdc++.exp (check_effective_target_tzdb):
1488         Check new _GLIBCXX_STATIC_TZDATA macro and ignore presence of
1489         tzdata.zi file in default location.
1490         * src/c++20/tzdata.zi: New file.
1491
1492 2023-01-14  Jonathan Wakely  <jwakely@redhat.com>
1493
1494         * include/bits/chrono_io.h (operator<<): Fix syntax errors.
1495         * testsuite/std/time/month_day/io.cc: New test.
1496         * testsuite/std/time/month_day_last/io.cc: New test.
1497         * testsuite/std/time/month_weekday/io.cc: New test.
1498         * testsuite/std/time/month_weekday_last/io.cc: New test.
1499         * testsuite/std/time/weekday_indexed/io.cc: New test.
1500         * testsuite/std/time/weekday_last/io.cc: New test.
1501         * testsuite/std/time/year_month/io.cc: New test.
1502         * testsuite/std/time/year_month_day_last/io.cc: New test.
1503         * testsuite/std/time/year_month_weekday/io.cc: New test.
1504         * testsuite/std/time/year_month_weekday_last/io.cc: New test.
1505
1506 2023-01-14  François Dumont  <fdumont@gcc.gnu.org>
1507
1508         * include/std/format [_GLIBCXX_INLINE_VERSION](to_chars): Adapt __asm symbol
1509         specifications.
1510         * config/abi/pre/gnu-versioned-namespace.ver: Add to_chars/from_chars symbols
1511         export.
1512
1513 2023-01-13  Jonathan Wakely  <jwakely@redhat.com>
1514
1515         * include/bits/std_mutex.h: Include <errno.h>.
1516
1517 2023-01-13  Arsen Arsenović  <arsen@aarsen.me>
1518
1519         * testsuite/20_util/to_chars/version.cc: Mark hosted-only.
1520         * testsuite/20_util/uses_allocator/lwg3677.cc: Ditto.
1521         * testsuite/20_util/weak_ptr/cons/self_move.cc: Ditto.
1522         * testsuite/std/ranges/adaptors/as_rvalue/1.cc: Replace usage of
1523         std::make_unique with a freestanding-compatible wrapper around
1524         unique_ptr.
1525         * testsuite/21_strings/basic_string_view/operations/contains/char.cc:
1526         Don't test for presence of __cpp_lib_string_contains on !HOSTED.
1527         * testsuite/21_strings/basic_string_view/operations/contains/char/2.cc:
1528         Ditto.
1529         * testsuite/std/ranges/version_c++23.cc: Don't test for presence
1530         of __cpp_lib_ranges in !HOSTED.
1531
1532 2023-01-13  Arsen Arsenović  <arsen@aarsen.me>
1533
1534         * include/Makefile.am: Install bits/char_traits.h,
1535         std/string_view
1536         * include/Makefile.in: Regenerate.
1537         * include/bits/char_traits.h: Gate hosted-only, wchar-only and
1538         mbstate-only bits behind appropriate #ifs.
1539         * include/std/string_view: Gate <iostream> functionality behind
1540         HOSTED.
1541         * include/std/version: Enable __cpp_lib_constexpr_string_view
1542         and __cpp_lib_starts_ends_with in !HOSTED.
1543         * include/std/ranges: Re-enable __is_basic_string_view on
1544         freestanding, include <string_view> directly.
1545         * include/precompiled/stdc++.h: Include <string_view> when
1546         !HOSTED too.
1547         * testsuite/20_util/function_objects/searchers.cc: Skip testing
1548         boyer_moore searchers on freestanding
1549         * testsuite/21_strings/basic_string_view/capacity/1.cc: Guard
1550         <string>-related tests behind __STDC_HOSTED__.
1551         * testsuite/21_strings/basic_string_view/cons/char/1.cc: Ditto.
1552         * testsuite/21_strings/basic_string_view/cons/char/2.cc: Remove
1553         unused <stdexcept> include.
1554         * testsuite/21_strings/basic_string_view/cons/char/3.cc: Remove
1555         unused <vector> include.
1556         * testsuite/21_strings/basic_string_view/cons/char/range.cc:
1557         Guard <string> related testing behind __STDC_HOSTED__.
1558         * testsuite/21_strings/basic_string_view/cons/wchar_t/1.cc:
1559         Guard <stdexcept> related tests behind __STDC_HOSTED__.
1560         * testsuite/21_strings/basic_string_view/element_access/char/1.cc:
1561         Ditto.
1562         * testsuite/21_strings/basic_string_view/element_access/wchar_t/1.cc:
1563         Guard <stdexcept> tests behind __STDC_HOSTED__.
1564         * testsuite/21_strings/basic_string_view/operations/contains/char/2.cc:
1565         Enable test on freestanding, guard <stdexcept> bits behind
1566         __STDC_HOSTED__.
1567         * testsuite/21_strings/basic_string_view/operations/substr/char.cc:
1568         Guard <stdexcept> bits behind __STDC_HOSTED__.
1569         * testsuite/21_strings/basic_string_view/operations/substr/wchar_t.cc:
1570         Ditto.
1571
1572 2023-01-13  Dimitrij Mijoski  <dmjpp@hotmail.com>
1573
1574         PR libstdc++/86419
1575         * src/c++11/codecvt.cc (read_utf8_code_point): Correctly detect
1576         errors in incomplete multibyte sequences.
1577         (utf16_in): Remove surrogates parameter. Fix conditions for
1578         returning partial.
1579         (utf16_out): Fix condition for returning partial.
1580         (ucs2_in): Do not pass surrogates argument to utf16_in.
1581         * testsuite/22_locale/codecvt/codecvt_unicode.cc: New test.
1582         * testsuite/22_locale/codecvt/codecvt_unicode.h: New header for
1583         tests.
1584         * testsuite/22_locale/codecvt/codecvt_unicode_wchar_t.cc: New
1585         test.
1586
1587 2023-01-13  Jonathan Wakely  <jwakely@redhat.com>
1588
1589         PR libstdc++/108331
1590         * config/io/c_io_stdio.h (__c_lock): Define as a typedef for
1591         __GTHREAD_LEGACY_MUTEX_T if defined.
1592
1593 2023-01-13  Jonathan Wakely  <jwakely@redhat.com>
1594
1595         PR libstdc++/108327
1596         * config/os/gnu-linux/ldbl-extra.ver (GLIBCXX_LDBL_3.4.31):
1597         Export __try_use_facet specializations for facets in namespace
1598         __gnu_cxx_ldbl128.
1599         * config/os/gnu-linux/ldbl-ieee128-extra.ver
1600         (GLIBCXX_IEEE128_3.4.31): Likewise for facets in namespace
1601         __gnu_cxx_ieee128.
1602         * testsuite/util/testsuite_abi.cc: Add to lists of known and
1603         latest versions.
1604
1605 2023-01-13  Jonathan Wakely  <jwakely@redhat.com>
1606
1607         * include/bits/std_mutex.h: Remove <system_error> include.
1608         * include/std/condition_variable: Add <bits/error_constants.h>
1609         include.
1610         * include/std/mutex: Likewise.
1611         * include/std/shared_mutex: Likewise.
1612
1613 2023-01-12  Jonathan Wakely  <jwakely@redhat.com>
1614
1615         PR libstdc++/77691
1616         * include/experimental/memory_resource
1617         (_GLIBCXX_MAX_ALIGN_MATCHES_MALLOC): Define.
1618         (do_allocate, do_deallocate): Check it.
1619         * testsuite/experimental/memory_resource/new_delete_resource.cc:
1620         Relax expected behaviour for 64-bit hppa-hp-hpux11.11.
1621
1622 2023-01-12  Jonathan Wakely  <jwakely@redhat.com>
1623
1624         * doc/xml/manual/abi.xml: Add latest library versions.
1625         * doc/html/manual/abi.html: Regenerate.
1626
1627 2023-01-12  François Dumont  <fdumont@gcc.gnu.org>
1628
1629         PR libstdc++/107189
1630         * include/bits/stl_tree.h (_Rb_tree<>::_M_insert_range_equal): Remove
1631         unused _Alloc_node instance.
1632
1633 2023-01-12  Jonathan Wakely  <jwakely@redhat.com>
1634
1635         * include/bits/atomic_wait.h (__detail::__platform_wait_t):
1636         Define as unsigned long if always lock-free, and unsigned int
1637         otherwise.
1638
1639 2023-01-10  Jonathan Wakely  <jwakely@redhat.com>
1640
1641         * src/c++20/tzdb.cc (tzdb_list::_S_init_tzdb): Use __try and
1642         __catch macros for exception handling.
1643
1644 2023-01-10  Jonathan Wakely  <jwakely@redhat.com>
1645
1646         PR libstdc++/108221
1647         * include/bits/stl_algobase.h (__lg): Replace six overloads with
1648         a single function template for all integer types.
1649         * include/bits/stl_algo.h (__merge_adaptive_resize): Cast
1650         arithmetic results back to _Distance.
1651
1652 2023-01-10  Jonathan Wakely  <jwakely@redhat.com>
1653
1654         PR libstdc++/108221
1655         * include/std/span (span::span()): Un-simplify constraint to
1656         work for size_t of lesser rank than int.
1657
1658 2023-01-07  LIU Hao  <lh_mouse@126.com>
1659
1660         PR middle-end/108300
1661         * src/c++11/system_error.cc: Define `WIN32_LEAN_AND_MEAN` before
1662         <windows.h>.
1663         * src/c++11/thread.cc: Likewise.
1664         * src/c++17/fs_ops.cc: Likewise.
1665         * src/filesystem/ops.cc: Likewise.
1666
1667 2023-01-06  Jonathan Wakely  <jwakely@redhat.com>
1668
1669         PR libstdc++/108228
1670         * src/c++20/tzdb.cc (zoneinfo_dir): Add diagnostic pragma.
1671
1672 2023-01-06  Jonathan Wakely  <jwakely@redhat.com>
1673
1674         PR libstdc++/108235
1675         * src/c++20/tzdb.cc (time_zone::_Impl::RulesCounter): New class
1676         template and partial specialization for synchronizing access to
1677         time_zone::_Impl::infos.
1678         (time_zone::_M_get_sys_info, reload_tzdb): Adjust uses of
1679         rules_counter.
1680
1681 2023-01-06  Patrick Palka  <ppalka@redhat.com>
1682
1683         PR libstdc++/108260
1684         * include/bits/utility.h (__cpp_lib_ranges_zip): Define for C++23.
1685         * include/std/ranges (__cpp_lib_ranges_zip): Likewise.
1686         (__cpp_lib_ranges_chunk): Likewise.
1687         (__cpp_lib_ranges_slide): Likewise.
1688         (__cpp_lib_ranges_chunk_by): Likewise.
1689         (__cpp_lib_ranges_join_with): Likewise.
1690         (__cpp_lib_ranges_repeat): Likewise.
1691         (__cpp_lib_ranges_stride): Likewise.
1692         (__cpp_lib_ranges_cartesian_product): Likewise.
1693         (__cpp_lib_ranges_as_rvalue): Likewise.
1694         * include/std/version: Ditto.
1695         * testsuite/20_util/tuple/p2321r2.cc: Verify value of
1696         feature-test macro.
1697         * testsuite/std/ranges/adaptors/as_rvalue/1.cc: Likewise.
1698         * testsuite/std/ranges/adaptors/chunk/1.cc: Likewise.
1699         * testsuite/std/ranges/adaptors/chunk_by/1.cc: Likewise.
1700         * testsuite/std/ranges/adaptors/join_with/1.cc: Likewise.
1701         * testsuite/std/ranges/adaptors/slide/1.cc: Likewise.
1702         * testsuite/std/ranges/adaptors/stride/1.cc: Likewise.
1703         * testsuite/std/ranges/cartesian_product/1.cc: Likewise.
1704         * testsuite/std/ranges/repeat/1.cc: Likewise.
1705         * testsuite/std/ranges/zip/1.cc: Likewise.
1706         * testsuite/std/ranges/version_c++23.cc: New test.
1707
1708 2023-01-06  Jonathan Wakely  <jwakely@redhat.com>
1709
1710         PR libstdc++/108214
1711         * include/std/bitset (operator>>): Use alloca in the right
1712         scope, not in a constructor.
1713         * testsuite/20_util/bitset/io/input.cc: Check case from PR.
1714
1715 2023-01-06  Jonathan Wakely  <jwakely@redhat.com>
1716
1717         PR libstdc++/108221
1718         * include/std/format (basic_format_arg) [!__cpp_lib_to_chars]:
1719         Disable visiting floating-point types.
1720
1721 2023-01-06  Jonathan Wakely  <jwakely@redhat.com>
1722
1723         PR libstdc++/108288
1724         * include/debug/safe_iterator.h (_Safe_iterator::operator++(int))
1725         (_Safe_iterator::operator--(int)): Do not hold lock around
1726         construction of return value.
1727
1728 2023-01-05  John David Anglin  <danglin@gcc.gnu.org>
1729
1730         * config/cpu/hppa/atomicity.h (_PA_LDCW_INSN): Define.
1731         (__exchange_and_add): Use _PA_LDCW_INSN.  Use ordered store for
1732         lock release.  Revise loop.
1733         (__atomic_add): Likewise.
1734
1735 2023-01-05  Jonathan Wakely  <jwakely@redhat.com>
1736
1737         PR libstdc++/108212
1738         * python/libstdcxx/v6/printers.py (_utc_timezone): New global
1739         variable.
1740         (StdChronoTimePointPrinter::to_string): Use it.
1741
1742 2023-01-05  Jonathan Wakely  <jwakely@redhat.com>
1743
1744         PR libstdc++/108290
1745         * include/std/functional (_Bind_front): Add no_unique_address
1746         attribute to data members.
1747         * testsuite/20_util/function_objects/bind_front/107784.cc: Check
1748         size of call wrappers with empty types for targets and bound
1749         arguments.
1750
1751 2023-01-05  Jonathan Wakely  <jwakely@redhat.com>
1752
1753         PR libstdc++/108211
1754         * src/c++20/tzdb.cc (chrono::current_zone()): Check for zone
1755         using only last component of the name.
1756
1757 2023-01-05  Jonathan Wakely  <jwakely@redhat.com>
1758
1759         PR libstdc++/108228
1760         PR libstdc++/108235
1761         * config/abi/pre/gnu.ver: Move zoneinfo_dir_override export to
1762         the latest symbol version.
1763         * src/c++20/tzdb.cc (USE_ATOMIC_SHARED_PTR): Define to 0 if
1764         atomic<_Node*> is not always lock free.
1765         (USE_ATOMIC_LIST_HEAD): New macro.
1766         [__hpux__] (__gnu_cxx::zoneinfo_dir_override()): Provide
1767         definition of weak symbol.
1768         (tzdb_list::_Node::_S_head): Rename to _S_head_cache.
1769         (tzdb_list::_Node::_S_list_head): New function for accessing
1770         list head efficiently.
1771         (tzdb_list::_Node::_S_cache_list_head): New function for
1772         updating _S_list_head.
1773
1774 2023-01-05  Jonathan Wakely  <jwakely@redhat.com>
1775
1776         PR libstdc++/108265
1777         * include/std/chrono (hh_mm_ss): Do not use chrono::abs if
1778         duration rep is unsigned.
1779         * testsuite/std/time/hh_mm_ss/1.cc: Check unsigned rep.
1780
1781 2023-01-04  Iain Sandoe  <iain@sandoe.co.uk>
1782
1783         PR libstdc++/108228
1784         * config/abi/pre/gnu.ver (GLIBCXX_3.4):
1785         Add __gnu_cxx::zoneinfo_dir_override().
1786
1787 2023-01-04  Jonathan Wakely  <jwakely@redhat.com>
1788
1789         PR libstdc++/108258
1790         * include/std/array (__array_traits<T, 0>::operator T*()): Add
1791         constexpr.
1792         * testsuite/23_containers/array/element_access/constexpr_c++17.cc: Check
1793         std::array<T, 0>::data().
1794
1795 \f
1796 Copyright (C) 2023 Free Software Foundation, Inc.
1797
1798 Copying and distribution of this file, with or without modification,
1799 are permitted in any medium without royalty provided the copyright
1800 notice and this notice are preserved.