libstdc++-v3/ChangeLog

   1 2023-07-05  Thomas Rodgers  <trodgers@redhat.com>
   2
   3         * testsuite/25_algorithms/pstl/alg_sorting/set.cc: Delete
   4         file.
   5         * testsuite/25_algorithms/pstl/alg_sorting/set_difference.cc:
   6         New file.
   7         * testsuite/25_algorithms/pstl/alg_sorting/set_intersection.cc:
   8         Likewise.
   9         * testsuite/25_algorithms/pstl/alg_sorting/set_symmetric_difference.cc:
  10         Likewise.
  11         * testsuite/25_algorithms/pstl/alg_sorting/set_union.cc:
  12         Likewise.
  13         * testsuite/25_algorithms/pstl/alg_sorting/set_util.h:
  14         Likewise.
  15
  16 2023-07-05  Jonathan Wakely  <jwakely@redhat.com>
  17
  18         * testsuite/23_containers/forward_list/debug/iterator1_neg.cc:
  19         Skip as UNSUPPORTED for C++98 mode.
  20         * testsuite/23_containers/forward_list/debug/iterator3_neg.cc:
  21         Likewise.
  22
  23 2023-07-05  Jonathan Wakely  <jwakely@redhat.com>
  24
  25         PR libstdc++/110542
  26         * include/bits/stl_uninitialized.h (__uninitialized_default_n):
  27         Do not use std::fill_n during constant evaluation.
  28
  29 2023-07-05  Jonathan Wakely  <jwakely@redhat.com>
  30
  31         * include/bits/vector.tcc (_M_default_append): Replace try-block
  32         with RAII types.
  33
  34 2023-07-05  Jonathan Wakely  <jwakely@redhat.com>
  35
  36         * include/bits/iterator_concepts.h (projected): Add typename.
  37
  38 2023-07-03  Jonathan Wakely  <jwakely@redhat.com>
  39
  40         * testsuite/27_io/headers/iosfwd/synopsis.cc: Make wsyncbuf and
  41         wosyncstream depend on _GLIBCXX_USE_CXX11_ABI.
  42
  43 2023-07-03  Jonathan Wakely  <jwakely@redhat.com>
  44
  45         * include/pstl/pstl_config.h (_PSTL_PRAGMA_SIMD_SCAN,
  46         _PSTL_PRAGMA_SIMD_INCLUSIVE_SCAN, _PSTL_PRAGMA_SIMD_EXCLUSIVE_SCAN):
  47         Define to OpenMP 5.0 pragmas even for GCC 10.0+.
  48         (_PSTL_UDS_PRESENT): Define to 1 for GCC 10.0+.
  49
  50 2023-07-03  Jonathan Wakely  <jwakely@redhat.com>
  51
  52         * include/bits/alloc_traits.h (_Destroy): Qualify call.
  53         * include/bits/stl_construct.h (_Destroy, _Destroy_n): Likewise.
  54         * testsuite/23_containers/vector/cons/destroy-adl.cc: New test.
  55
  56 2023-07-03  Iain Sandoe  <iain@sandoe.co.uk>
  57
  58         * testsuite/lib/libstdc++.exp: Remove additional flag handled
  59         by Darwin specs.
  60
  61 2023-06-30  Jonathan Wakely  <jwakely@redhat.com>
  62
  63         PR libstdc++/110432
  64         * acinclude.m4 (GLIBCXX_CHECK_INIT_PRIORITY): New.
  65         * config.h.in: Regenerate.
  66         * configure: Regenerate.
  67         * configure.ac: Use GLIBCXX_CHECK_INIT_PRIORITY.
  68         * include/std/iostream: Use new autoconf macro as well as
  69         __has_attribute.
  70         * src/c++98/ios_base_init.h: Use new autoconf macro instead of
  71         __has_attribute.
  72
  73 2023-06-30  Jonathan Wakely  <jwakely@redhat.com>
  74
  75         * src/c++11/random.cc (random_device::_M_init): Add maybe_unused
  76         attribute.
  77
  78 2023-06-30  Jonathan Wakely  <jwakely@redhat.com>
  79
  80         PR libstdc++/105081
  81         * src/c++11/random.cc (random_device::_M_init): Throw
  82         std::system_error when the requested device is a valid token but
  83         not available at runtime.
  84
  85 2023-06-30  Hans-Peter Nilsson  <hp@axis.com>
  86
  87         PR libstdc++/108672
  88         * include/pstl/unseq_backend_simd.h (__simd_or): Re-apply using
  89         __INT32_TYPE__ instead of int32_t.
  90
  91 2023-06-29  Jonathan Wakely  <jwakely@redhat.com>
  92
  93         * src/c++20/tzdb.cc (USE_ATOMIC_SHARED_PTR): Define consistently
  94         with USE_ATOMIC_LIST_HEAD.
  95         (list_mutex): Replace global object with function. Use local
  96         static object when std::mutex constructor isn't constexpr.
  97
  98 2023-06-29  Jonathan Wakely  <jwakely@redhat.com>
  99
 100         PR libstdc++/110462
 101         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check that
 102         copy_file_range can be called with loff_t* arguments.
 103         * configure: Regenerate.
 104         * src/filesystem/ops-common.h (copy_file_copy_file_range):
 105         Use loff_t for offsets.
 106
 107 2023-06-29  Tom Tromey  <tromey@adacore.com>
 108
 109         * testsuite/lib/gdb-test.exp (gdb-test): Relax type-printer
 110         regexp.
 111
 112 2023-06-28  Jan Hubicka  <jh@suse.cz>
 113
 114         PR middle-end/109849
 115         * include/bits/c++config (std::__terminate): Mark cold.
 116         * include/bits/functexcept.h: Mark everything as cold.
 117         * libsupc++/exception: Mark terminate and unexpected as cold.
 118
 119 2023-06-26  Thomas Rodgers  <trodgers@redhat.com>
 120
 121         * include/pstl/algorithm_fwd.h: Synchronize with upstream.
 122         * include/pstl/algorithm_impl.h: Likewise.
 123         * include/pstl/execution_defs.h: Likewise.
 124         * include/pstl/execution_impl.h: Likewise.
 125         * include/pstl/glue_algorithm_impl.h: Likewise.
 126         * include/pstl/glue_execution_defs.h: Likewise.
 127         * include/pstl/glue_memory_impl.h: Likewise.
 128         * include/pstl/glue_numeric_impl.h: Likewise.
 129         * include/pstl/memory_impl.h: Likewise.
 130         * include/pstl/numeric_fwd.h: Likewise.
 131         * include/pstl/numeric_impl.h: Likewise.
 132         * include/pstl/parallel_backend.h: Likewise.
 133         * include/pstl/parallel_backend_serial.h: Likewise.
 134         * include/pstl/parallel_backend_tbb.h: Likewise.
 135         * include/pstl/parallel_impl.h: Likewise.
 136         * include/pstl/pstl_config.h: Likewise.
 137         * include/pstl/unseq_backend_simd.h: Likewise.
 138         * include/pstl/utils.h: Likewise.
 139         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc:
 140         Likewise.
 141         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc:
 142         Likewise.
 143         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_fill_destroy.cc:
 144         Likewise.
 145         * testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc:
 146         Likewise.
 147         * testsuite/25_algorithms/pstl/alg_merge/merge.cc: Likewise.
 148         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc:
 149         Likewise.
 150         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc:
 151         Likewise.
 152         * testsuite/25_algorithms/pstl/alg_modifying_operations/fill.cc:
 153         Likewise.
 154         * testsuite/25_algorithms/pstl/alg_modifying_operations/generate.cc:
 155         Likewise.
 156         * testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc:
 157         Likewise.
 158         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc:
 159         Likewise.
 160         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc:
 161         Likewise.
 162         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc:
 163         Likewise.
 164         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove_copy.cc:
 165         Likewise.
 166         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace.cc:
 167         Likewise.
 168         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc:
 169         Likewise.
 170         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc:
 171         Likewise.
 172         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc:
 173         Likewise.
 174         * testsuite/25_algorithms/pstl/alg_modifying_operations/swap_ranges.cc:
 175         Likewise.
 176         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_binary.cc:
 177         Likewise.
 178         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_unary.cc:
 179         Likewise.
 180         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc:
 181         Likewise.
 182         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc:
 183         Likewise.
 184         * testsuite/25_algorithms/pstl/alg_nonmodifying/adjacent_find.cc:
 185         Likewise.
 186         * testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc:
 187         Likewise.
 188         * testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc:
 189         Likewise.
 190         * testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc:
 191         Likewise.
 192         * testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc:
 193         Likewise.
 194         * testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc:
 195         Likewise.
 196         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc:
 197         Likewise.
 198         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc:
 199         Likewise.
 200         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc:
 201         Likewise.
 202         * testsuite/25_algorithms/pstl/alg_nonmodifying/for_each.cc:
 203         Likewise.
 204         * testsuite/25_algorithms/pstl/alg_nonmodifying/mismatch.cc:
 205         Likewise.
 206         * testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc:
 207         Likewise.
 208         * testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc:
 209         Likewise.
 210         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc:
 211         Likewise.
 212         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc:
 213         Likewise.
 214         * testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc:
 215         Likewise.
 216         * testsuite/25_algorithms/pstl/alg_sorting/includes.cc:
 217         Likewise.
 218         * testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc:
 219         Likewise.
 220         * testsuite/25_algorithms/pstl/alg_sorting/is_sorted.cc:
 221         Likewise.
 222         * testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc:
 223         Likewise.
 224         * testsuite/25_algorithms/pstl/alg_sorting/minmax_element.cc:
 225         Likewise.
 226         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc:
 227         Likewise.
 228         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc:
 229         Likewise.
 230         * testsuite/25_algorithms/pstl/alg_sorting/set.cc:
 231         Likewise.
 232         * testsuite/25_algorithms/pstl/alg_sorting/sort.cc:
 233         Likewise.
 234         * testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc:
 235         Likewise.
 236         * testsuite/26_numerics/pstl/numeric_ops/reduce.cc:
 237         Likewise.
 238         * testsuite/26_numerics/pstl/numeric_ops/scan.cc:
 239         Likewise.
 240         * testsuite/26_numerics/pstl/numeric_ops/transform_reduce.cc:
 241         Likewise.
 242         * testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc:
 243         Likewise.
 244         * testsuite/util/pstl/test_utils.h:
 245         Likewise.
 246
 247 2023-06-26  Jonathan Wakely  <jwakely@redhat.com>
 248
 249         PR libstdc++/110239
 250         * include/std/format (__format::__parse_integer): Fix buffer
 251         overflow for wide chars.
 252         (formatter<const void*, C>::format): Cast to uintptr_t instead
 253         of uint64_t.
 254         * testsuite/std/format/string.cc: Test too-large widths.
 255
 256 2023-06-26  Jonathan Wakely  <jwakely@redhat.com>
 257
 258         * include/bits/iterator_concepts.h (projected): Replace class
 259         template with alias template denoting an ADL-proofed helper.
 260         (incremental_traits<projected<Iter, Proj>>): Remove.
 261         * testsuite/24_iterators/indirect_callable/projected-adl.cc:
 262         New test.
 263
 264 2023-06-26  Jonathan Wakely  <jwakely@redhat.com>
 265
 266         * include/debug/helper_functions.h (__get_distance)
 267         (__check_singular, __valid_range_aux, __valid_range): Qualify
 268         calls to disable ADL.
 269         (__check_singular_aux(const _Safe_iterator_base*)): Declare
 270         overload that was previously found via ADL.
 271
 272 2023-06-23  Jonathan Wakely  <jwakely@redhat.com>
 273
 274         * include/bits/vector.tcc (_M_realloc_insert): Replace try-block
 275         with RAII types.
 276
 277 2023-06-20  Jonathan Wakely  <jwakely@redhat.com>
 278
 279         * include/std/array (to_array(T(&)[N])): Remove redundant
 280         condition.
 281         (to_array(T(&&)[N])): Remove redundant std::move.
 282
 283 2023-06-16  Alexandre Oliva  <oliva@adacore.com>
 284
 285         * testsuite/20_util/from_chars/4.cc: Skip long double on
 286         aarch64-rtems.
 287
 288 2023-06-16  Joel Brobecker  <brobecker@adacore.com>
 289
 290         * configure.ac ["x${with_newlib}" = "xyes"]: Define
 291         HAVE_HYPOTF.  Add compile-checks for various long double
 292         math functions as well.
 293         * configure: Regenerate.
 294
 295 2023-06-14  Jonny Grant  <jg@jguk.org>
 296
 297         * doc/xml/manual/extensions.xml: Remove demangle exception
 298         description and include.
 299         * doc/html/manual/ext_demangling.html: Regenerate.
 300
 301 2023-06-10  Hans-Peter Nilsson  <hp@axis.com>
 302
 303         * testsuite/27_io/basic_istream/ignore/wchar_t/94749.cc (main)
 304         [! SIMULATOR_TEST]: Also exclude running test05.
 305         * testsuite/27_io/basic_istream/ignore/char/94749.cc: Ditto.
 306
 307 2023-06-09  Ken Matsui  <kmatsui@cs.washington.edu>
 308
 309         * include/std/type_traits: Use using instead of typedef
 310
 311 2023-06-09  Jonathan Wakely  <jwakely@redhat.com>
 312
 313         PR libstdc++/110077
 314         * src/c++17/floating_from_chars.cc (from_chars) <_Float128>:
 315         Only define if _Float128 and long double have different
 316         representations.
 317
 318 2023-06-09  Jonathan Wakely  <jwakely@redhat.com>
 319
 320         PR libstdc++/100285
 321         * include/experimental/internet [IPPROTO_TCP || IPPROTO_UDP]
 322         (basic_endpoint, basic_resolver_entry, resolver_base)
 323         (basic_resolver_results, basic_resolver): Only define if the tcp
 324         or udp protocols will be defined.
 325
 326 2023-06-09  Jonathan Wakely  <jwakely@redhat.com>
 327
 328         * acinclude.m4 (libtool_VERSION): Update to 6.0.33.
 329         * configure: Regenerate.
 330         * doc/xml/manual/abi.xml: Add libstdc++.so.6.0.33.
 331         * doc/html/manual/abi.html: Regenerate.
 332
 333 2023-06-09  Jonathan Wakely  <jwakely@redhat.com>
 334
 335         PR libstdc++/110149
 336         * include/std/format (formatter<const void*, charT>::parse):
 337         Only alow 0 and P for C++26 and non-strict modes.
 338         (formatter<const void*, charT>::format): Use toupper for P
 339         type, and insert zero-fill characters for 0 option.
 340         * testsuite/std/format/functions/format.cc: Check pointer
 341         formatting. Only check P2510R3 extensions conditionally.
 342         * testsuite/std/format/parse_ctx.cc: Only check P2510R3
 343         extensions conditionally.
 344
 345 2023-06-09  Jonathan Wakely  <jwakely@redhat.com>
 346
 347         PR libstdc++/110167
 348         * include/std/array (to_array): Initialize arrays of trivial
 349         types using memcpy. For non-trivial types, use lambda
 350         expressions instead of a separate helper function.
 351         (__to_array): Remove.
 352         * testsuite/23_containers/array/creation/110167.cc: New test.
 353
 354 2023-06-09  Jonathan Wakely  <jwakely@redhat.com>
 355
 356         * testsuite/23_containers/deque/modifiers/emplace/52799.cc:
 357         Removed.
 358         * testsuite/23_containers/deque/modifiers/emplace/const_iterator.cc:
 359         Removed.
 360         * testsuite/23_containers/list/modifiers/emplace/52799.cc:
 361         Removed.
 362         * testsuite/23_containers/list/modifiers/emplace/const_iterator.cc:
 363         Removed.
 364         * testsuite/23_containers/vector/modifiers/emplace/52799.cc:
 365         Removed.
 366         * testsuite/23_containers/vector/modifiers/emplace/const_iterator.cc:
 367         Removed.
 368         * testsuite/23_containers/deque/modifiers/emplace/1.cc: New
 369         test.
 370         * testsuite/23_containers/list/modifiers/emplace/1.cc: New
 371         test.
 372         * testsuite/23_containers/vector/modifiers/emplace/1.cc: New
 373         test.
 374
 375 2023-06-07  Jakub Jelinek  <jakub@redhat.com>
 376
 377         PR libstdc++/110145
 378         * testsuite/20_util/to_chars/double.cc: Include <cfloat>.
 379         (double_to_chars_test_cases,
 380         double_scientific_precision_to_chars_test_cases_2,
 381         double_fixed_precision_to_chars_test_cases_2): #if out 1e126, 4.91e-6
 382         and 5.547e-6 tests if FLT_EVAL_METHOD is negative or larger than 1.
 383         Add unconditional tests with corresponding double constants
 384         0x1.7a2ecc414a03fp+418, 0x1.4981285e98e79p-18 and
 385         0x1.7440bbff418b9p-18.
 386
 387 2023-06-07  Jonathan Wakely  <jwakely@redhat.com>
 388
 389         * testsuite/util/testsuite_abi.cc (check_version): Re-add
 390         CXXABI_1.3.14.
 391
 392 2023-06-07  Jonathan Wakely  <jwakely@redhat.com>
 393
 394         * testsuite/18_support/nested_exception/rethrow_if_nested-term.cc:
 395         Require effective target exceptions_enabled instead of using
 396         dg-skip-if.
 397         * testsuite/23_containers/vector/capacity/constexpr.cc: Expect
 398         shrink_to_fit() to be a no-op without exceptions enabled.
 399         * testsuite/23_containers/vector/capacity/shrink_to_fit.cc:
 400         Likewise.
 401         * testsuite/ext/bitmap_allocator/check_allocate_max_size.cc:
 402         Require effective target exceptions_enabled.
 403         * testsuite/ext/malloc_allocator/check_allocate_max_size.cc:
 404         Likewise.
 405         * testsuite/ext/mt_allocator/check_allocate_max_size.cc:
 406         Likewise.
 407         * testsuite/ext/new_allocator/check_allocate_max_size.cc:
 408         Likewise.
 409         * testsuite/ext/pool_allocator/check_allocate_max_size.cc:
 410         Likewise.
 411         * testsuite/ext/throw_allocator/check_allocate_max_size.cc:
 412         Likewise.
 413
 414 2023-06-07  Jonathan Wakely  <jwakely@redhat.com>
 415
 416         * testsuite/20_util/duration/cons/2.cc: Use values that aren't
 417         affected by rounding.
 418         * testsuite/20_util/from_chars/5.cc: Cast arithmetic result to
 419         double before comparing for equality.
 420         * testsuite/20_util/from_chars/6.cc: Likewise.
 421         * testsuite/20_util/variant/86874.cc: Use values that aren't
 422         affected by rounding.
 423         * testsuite/25_algorithms/lower_bound/partitioned.cc: Compare to
 424         original value instead of to floating-point-literal.
 425         * testsuite/26_numerics/random/discrete_distribution/cons/range.cc:
 426         Cast arithmetic result to double before comparing for equality.
 427         * testsuite/26_numerics/random/piecewise_constant_distribution/cons/range.cc:
 428         Likewise.
 429         * testsuite/26_numerics/random/piecewise_linear_distribution/cons/range.cc:
 430         Likewise.
 431         * testsuite/26_numerics/valarray/transcend.cc (eq): Check that
 432         the absolute difference is less than 0.01 instead of comparing
 433         to two decimal places.
 434         * testsuite/27_io/basic_istream/extractors_arithmetic/char/01.cc:
 435         Cast arithmetic result to double before comparing for equality.
 436         * testsuite/27_io/basic_istream/extractors_arithmetic/char/09.cc:
 437         Likewise.
 438         * testsuite/27_io/basic_istream/extractors_arithmetic/char/10.cc:
 439         Likewise.
 440         * testsuite/27_io/basic_istream/extractors_arithmetic/wchar_t/01.cc:
 441         Likewise.
 442         * testsuite/27_io/basic_istream/extractors_arithmetic/wchar_t/09.cc:
 443         Likewise.
 444         * testsuite/27_io/basic_istream/extractors_arithmetic/wchar_t/10.cc:
 445         Likewise.
 446         * testsuite/ext/random/hoyt_distribution/cons/parms.cc: Likewise.
 447
 448 2023-06-07  Jonathan Wakely  <jwakely@redhat.com>
 449
 450         Revert:
 451         2023-06-06  Jonathan Wakely  <jwakely@redhat.com>
 452
 453         * configure.ac: Use AS_IF.
 454         * configure: Regenerate.
 455
 456 2023-06-07  Thomas Schwinge  <thomas@codesourcery.com>
 457
 458         * testsuite/lib/prune.exp (libstdc++-dg-prune): Support
 459         'UNSUPPORTED: [...]: exception handling disabled'.
 460
 461 2023-06-06  Jonathan Wakely  <jwakely@redhat.com>
 462
 463         * testsuite/util/testsuite_abi.cc (check_version): Add
 464         CXXABI_1.3.15 symver and make it the latestp. Remove
 465         GLIBCXX_IEEE128_3.4.31 and GLIBCXX_LDBL_3.4.31 from latestp.
 466
 467 2023-06-06  Jonathan Wakely  <jwakely@redhat.com>
 468             Jakub Jelinek  <jakub@redhat.com>
 469
 470         PR libstdc++/104772
 471         * include/std/limits: (numeric_limits<__float128>): Define
 472         for __STRICT_ANSI__ as well.
 473         * testsuite/18_support/numeric_limits/128bit.cc: Remove
 474         check for __STRICT_ANSI__.
 475
 476 2023-06-06  Jonathan Wakely  <jwakely@redhat.com>
 477
 478         * configure.ac: Use AS_IF.
 479         * configure: Regenerate.
 480
 481 2023-06-06  Matthias Kretz  <m.kretz@gsi.de>
 482
 483         PR libstdc++/109822
 484         * include/experimental/bits/simd_builtin.h (_S_store): Rewrite
 485         to avoid casts to other vector types. Implement store as
 486         succession of power-of-2 sized memcpy to avoid PR90424.
 487
 488 2023-06-06  Matthias Kretz  <m.kretz@gsi.de>
 489
 490         PR libstdc++/110054
 491         * include/experimental/bits/simd_builtin.h (_S_masked_store):
 492         Call into deduced ABI's SimdImpl after conversion.
 493         * include/experimental/bits/simd_x86.h (_S_masked_store_nocvt):
 494         Don't use _mm_maskmoveu_si128. Use the generic fall-back
 495         implementation. Also fix masked stores without SSE2, which
 496         were not doing anything before.
 497
 498 2023-06-06  Matthias Kretz  <m.kretz@gsi.de>
 499
 500         * include/experimental/bits/simd.h (__bit_cast): Use
 501         __gnu__::__vector_size__ instead of gnu::vector_size.
 502
 503 2023-06-06  Jonathan Wakely  <jwakely@redhat.com>
 504
 505         PR libstdc++/110139
 506         * include/std/array (__array_traits<T, 0>::operator T*()): Make
 507         conversion operator explicit.
 508         (array::front): Use size_type as subscript operand.
 509         (array::data): Use static_cast to make conversion explicit.
 510         * testsuite/23_containers/array/element_access/110139.cc: New
 511         test.
 512
 513 2023-06-06  Joseph Faulls  <Joseph.Faulls@imgtec.com>
 514
 515         * include/bits/locale_classes.tcc: Remove check for
 516         codecvt<char8_t, char, mbstate_t> facet.
 517
 518 2023-06-06  Jonathan Wakely  <jwakely@redhat.com>
 519
 520         * src/filesystem/ops-common.h (do_copy_file) [O_CLOEXEC]: Set
 521         close-on-exec flag on file descriptors.
 522
 523 2023-06-06  Jonathan Wakely  <jwakely@redhat.com>
 524
 525         PR libstdc++/108178
 526         * src/filesystem/ops-common.h (do_copy_file): Check for empty
 527         files by trying to read a character.
 528         * testsuite/27_io/filesystem/operations/copy_file_108178.cc:
 529         New test.
 530
 531 2023-06-06  Jannik Glückert  <jannik.glueckert@gmail.com>
 532
 533         * acinclude.m4 (_GLIBCXX_USE_COPY_FILE_RANGE): Define.
 534         * config.h.in: Regenerate.
 535         * configure: Regenerate.
 536         * src/filesystem/ops-common.h (copy_file_copy_file_range):
 537         Define new function.
 538         (do_copy_file): Use it.
 539
 540 2023-06-06  Jannik Glückert  <jannik.glueckert@gmail.com>
 541
 542         * acinclude.m4 (_GLIBCXX_HAVE_LSEEK): Define.
 543         * config.h.in: Regenerate.
 544         * configure: Regenerate.
 545         * src/filesystem/ops-common.h (copy_file_sendfile): Define new
 546         function for sendfile logic. Loop to support large files. Skip
 547         zero-length files.
 548         (do_copy_file): Use it.
 549
 550 2023-06-04  Jason Merrill  <jason@redhat.com>
 551
 552         PR c++/97720
 553         * libsupc++/eh_call.cc (__cxa_call_terminate): Take void*.
 554         * config/abi/pre/gnu.ver: Add it.
 555
 556 2023-06-02  François Dumont  <fdumont@gcc.gnu.org>
 557
 558         * include/parallel/algobase.h: Include <parallel/search.h>.
 559
 560 2023-06-01  Jonathan Wakely  <jwakely@redhat.com>
 561
 562         * testsuite/26_numerics/pstl/numeric_ops/transform_reduce.cc:
 563         Add const to equality operator.
 564
 565 2023-06-01  Jonathan Wakely  <jwakely@redhat.com>
 566
 567         * include/std/expected (expected::and_then, expected::or_else)
 568         (expected::transform_error): Use _M_val and _M_unex instead of
 569         calling value() and error(), as per LWG 3938.
 570         (expected::transform): Likewise. Remove incorrect std::move
 571         calls from lvalue overloads.
 572         (expected<void, E>::and_then, expected<void, E>::or_else)
 573         (expected<void, E>::transform): Use _M_unex instead of calling
 574         error().
 575         * testsuite/20_util/expected/lwg3877.cc: Add checks for and_then
 576         and transform, and for std::expected<void, E>.
 577         * testsuite/20_util/expected/lwg3938.cc: New test.
 578
 579 2023-06-01  Jonathan Wakely  <jwakely@redhat.com>
 580
 581         PR libstdc++/110060
 582         * include/bits/stl_vector.h (_Vector_base::_M_invariant):
 583         Remove.
 584         (vector::size, vector::capacity): Remove calls to _M_invariant.
 585         * include/bits/vector.tcc (vector::_M_fill_assign): Add
 586         optimization hint to reallocating path.
 587         (vector::_M_assign_aux(FwdIter, FwdIter, forward_iterator_tag)):
 588         Likewise.
 589         * testsuite/23_containers/vector/capacity/invariant.cc: Moved
 590         to...
 591         * testsuite/23_containers/vector/modifiers/assign/no_realloc.cc:
 592         ...here. Check assign(FwdIter, FwdIter) too.
 593         * testsuite/23_containers/vector/types/1.cc: Revert addition
 594         of -Wno-stringop-overread option.
 595
 596 2023-06-01  Jonathan Wakely  <jwakely@redhat.com>
 597
 598         * doc/xml/manual/evolution.xml: Document removal of implicit
 599         allocator rebinding extensions in strict mode and for C++20.
 600         * doc/html/*: Regenerate.
 601
 602 2023-06-01  Jason Merrill  <jason@redhat.com>
 603
 604         * libsupc++/eh_personality.cc (PERSONALITY_FUNCTION): Don't check
 605         handlers in the cleanup phase.
 606
 607 2023-06-01  Matthias Kretz  <m.kretz@gsi.de>
 608
 609         PR libstdc++/110050
 610         * include/experimental/bits/simd.h (__vectorized_sizeof): With
 611         __have_neon_a32 only single-precision float works (in addition
 612         to integers).
 613
 614 2023-06-01  François Dumont  <fdumont@gcc.gnu.org>
 615
 616         * include/bits/stl_algo.h
 617         (std::__search, std::search(_FwdIt1, _FwdIt1, _FwdIt2, _FwdIt2, _BinPred)): Move...
 618         * include/bits/stl_algobase.h: ...here.
 619         * include/std/functional: Replace <stl_algo.h> include by <stl_algobase.h>.
 620         * include/parallel/algo.h (std::__parallel::search<_FIt1, _FIt2, _BinaryPred>)
 621         (std::__parallel::__search_switch<_FIt1, _FIt2, _BinaryPred, _ItTag1, _ItTag2>):
 622         Move...
 623         * include/parallel/algobase.h: ...here.
 624         * include/experimental/functional: Remove <bits/stl_algo.h> and <parallel/algorithm>
 625         includes. Include <bits/stl_algobase.h>.
 626
 627 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
 628
 629         PR libstdc++/109818
 630         * acinclude.m4 (GLIBCXX_ENABLE_C99): Add separate check for
 631         float_t and double_t and define HAVE_C99_FLT_EVAL_TYPES.
 632         * config.h.in: Regenerate.
 633         * configure: Regenerate.
 634         * include/c_global/cmath (float_t, double_t): Guard using new
 635         _GLIBCXX_HAVE_C99_FLT_EVAL_TYPES macro.
 636
 637 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
 638
 639         * acinclude.m4 (GLIBCXX_ENABLE_C99): Add checks for C99 math
 640         functions and define _GLIBCXX_USE_C99_MATH_FUNCS. Move checks
 641         for C99 rounding functions to here.
 642         (GLIBCXX_CHECK_C99_TR1): Remove checks for C99 rounding
 643         functions from here.
 644         * config.h.in: Regenerate.
 645         * configure: Regenerate.
 646         * include/bits/random.h: Use _GLIBCXX_USE_C99_MATH_FUNCS instead
 647         of _GLIBCXX_USE_C99_MATH_TR1.
 648         * include/bits/random.tcc: Likewise.
 649         * include/c_compatibility/math.h: Likewise.
 650         * include/c_global/cmath: Likewise.
 651         * include/ext/random: Likewise.
 652         * include/ext/random.tcc: Likewise.
 653         * include/std/complex: Likewise.
 654         * testsuite/20_util/from_chars/4.cc: Likewise.
 655         * testsuite/20_util/from_chars/8.cc: Likewise.
 656         * testsuite/26_numerics/complex/proj.cc: Likewise.
 657         * testsuite/26_numerics/headers/cmath/60401.cc: Likewise.
 658         * testsuite/26_numerics/headers/cmath/types_std_c++0x.cc:
 659         Likewise.
 660         * testsuite/lib/libstdc++.exp (check_v3_target_cstdint):
 661         Likewise.
 662         * testsuite/util/testsuite_random.h: Likewise.
 663
 664 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
 665
 666         * include/bits/stl_vector.h (_Vector_base::_M_invariant()): New
 667         function.
 668         (vector::size(), vector::capacity()): Call _M_invariant().
 669         * testsuite/23_containers/vector/capacity/invariant.cc: New test.
 670         * testsuite/23_containers/vector/types/1.cc: Add suppression for
 671         false positive warning (PR110060).
 672
 673 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
 674
 675         PR libstdc++/109921
 676         * src/c++17/floating_from_chars.cc: Check __FLT128_MANT_DIG__ is
 677         defined before trying to use _Float128.
 678
 679 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
 680
 681         * acinclude.m4 (GLIBCXX_ZONEINFO_DIR): Fix for 32-bit pointers
 682         to check __INT_PTR_WIDTH__ instead of sizeof(void*).
 683         * configure: Regenerate.
 684
 685 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
 686
 687         * include/bits/unique_lock.h: Include <bits/error_constants.h>
 688         here for std::errc constants.
 689         * include/std/mutex: Do not include <bits/error_constants.h> and
 690         <exception> here.
 691
 692 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
 693
 694         * configure.ac: Replace use of -o operator for test.
 695         * configure: Regenerate.
 696
 697 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
 698
 699         * include/std/scoped_allocator (scoped_allocator_adaptor): Add
 700         noexcept to all constructors except the default constructor.
 701         (scoped_allocator_adaptor::inner_allocator): Add noexcept.
 702         (scoped_allocator_adaptor::outer_allocator): Likewise.
 703         * testsuite/20_util/scoped_allocator/noexcept.cc: New test.
 704
 705 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
 706
 707         PR libstdc++/104772
 708         * include/std/limits (numeric_limits<__float128>): Define.
 709         * testsuite/18_support/numeric_limits/128bit.cc: New test.
 710
 711 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
 712
 713         * acinclude.m4 (GLIBCXX_ZONEINFO_DIR): Extend logic for avr and
 714         msp430 to all 16-bit targets.
 715         * configure: Regenerate.
 716
 717 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
 718
 719         PR libstdc++/109921
 720         * src/c++17/floating_from_chars.cc (USE_STRTOF128_FOR_FROM_CHARS):
 721         Only define when USE_STRTOD_FOR_FROM_CHARS is also defined.
 722         (USE_STRTOD_FOR_FROM_CHARS): Do not undefine when long double is
 723         binary64.
 724         (from_chars(const char*, const char*, double&, chars_format)):
 725         Check __LDBL_MANT_DIG__ == __DBL_MANT_DIG__ here.
 726         (from_chars(const char*, const char*, _Float128&, chars_format))
 727         Only use from_chars_strtod when USE_STRTOD_FOR_FROM_CHARS is
 728         defined, otherwise parse a long double and convert to _Float128.
 729
 730 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
 731
 732         PR libstdc++/109922
 733         * include/std/iomanip (operator>>(basic_istream&, _Setfill)):
 734         Add deprecated attribute to non-standard overload.
 735         * doc/xml/manual/evolution.xml: Document deprecation.
 736         * doc/html/*: Regenerate.
 737         * testsuite/27_io/manipulators/standard/char/1.cc: Add
 738         dg-warning for expected deprecated warning.
 739         * testsuite/27_io/manipulators/standard/char/2.cc: Likewise.
 740         * testsuite/27_io/manipulators/standard/wchar_t/1.cc: Likewise.
 741         * testsuite/27_io/manipulators/standard/wchar_t/2.cc: Likewise.
 742
 743 2023-05-30  Alexandre Oliva  <oliva@adacore.com>
 744
 745         * testsuite/20_util/from_chars/4.cc: Skip long double test06
 746         on x86_64-vxworks.
 747         * testsuite/20_util/to_chars/long_double.cc: Xfail run on
 748         x86_64-vxworks.
 749
 750 2023-05-30  Matthias Kretz  <m.kretz@gsi.de>
 751
 752         PR libstdc++/109822
 753         * include/experimental/bits/simd.h (to_native): Use int NTTP
 754         as specified in PTS2.
 755         (to_compatible): Likewise. Add missing tag to call mask
 756         generator ctor.
 757         * testsuite/experimental/simd/pr109822_cast_functions.cc: New
 758         test.
 759
 760 2023-05-30  Matthias Kretz  <m.kretz@gsi.de>
 761
 762         * testsuite/experimental/simd/tests/integer_operators.cc:
 763         Compute expected value differently to avoid getting turned into
 764         a vector shift.
 765
 766 2023-05-30  Matthias Kretz  <m.kretz@gsi.de>
 767
 768         * testsuite/experimental/simd/tests/operator_cvt.cc: Make long
 769         double <-> (u)long conversion tests conditional on sizeof(long
 770         double) and sizeof(long).
 771
 772 2023-05-26  Matthias Kretz  <m.kretz@gsi.de>
 773
 774         * include/experimental/bits/simd_ppc.h (_S_bit_shift_left):
 775         Negative __y is UB, so prefer signed compare.
 776
 777 2023-05-25  Jonathan Wakely  <jwakely@redhat.com>
 778
 779         * testsuite/util/testsuite_allocator.h (PointerBase): Add
 780         relational operators.
 781
 782 2023-05-25  Alexandre Oliva  <oliva@adacore.com>
 783
 784         * testsuite/20_util/to_chars/long_double.cc: Expect execution
 785         fail on x86-vxworks.
 786
 787 2023-05-24  Matthias Kretz  <m.kretz@gsi.de>
 788
 789         PR libstdc++/109949
 790         * include/experimental/bits/simd.h (__intrinsic_type): If
 791         __ALTIVEC__ is defined, map gnu::vector_size types to their
 792         corresponding __vector T types without losing unsignedness of
 793         integer types. Also prefer long long over long.
 794         * include/experimental/bits/simd_ppc.h (_S_popcount): Cast mask
 795         object to the expected unsigned vector type.
 796
 797 2023-05-24  Matthias Kretz  <m.kretz@gsi.de>
 798
 799         PR libstdc++/109261
 800         * include/experimental/bits/simd.h (__intrinsic_type):
 801         Specialize __intrinsic_type<double, 8> and
 802         __intrinsic_type<double, 16> in any case, but provide the member
 803         type only with __aarch64__.
 804
 805 2023-05-24  Matthias Kretz  <m.kretz@gsi.de>
 806
 807         PR libstdc++/109261
 808         * include/experimental/bits/simd_neon.h (_S_reduce): Add
 809         constexpr and make NEON implementation conditional on
 810         not __builtin_is_constant_evaluated.
 811
 812 2023-05-23  Matthias Kretz  <m.kretz@gsi.de>
 813
 814         PR libstdc++/109261
 815         * include/experimental/bits/simd.h (_SimdWrapper::_M_set):
 816         Avoid vector builtin subscripting in constant expressions.
 817         (resizing_simd_cast): Avoid memcpy if constant_evaluated.
 818         (const_where_expression, where_expression, where)
 819         (__extract_part, simd_mask, _SimdIntOperators, simd): Add either
 820         _GLIBCXX_SIMD_CONSTEXPR (on public APIs), or constexpr (on
 821         internal APIs).
 822         * include/experimental/bits/simd_builtin.h (__vector_permute)
 823         (__vector_shuffle, __extract_part, _GnuTraits::_SimdCastType1)
 824         (_GnuTraits::_SimdCastType2, _SimdImplBuiltin)
 825         (_MaskImplBuiltin::_S_store): Add constexpr.
 826         (_CommonImplBuiltin::_S_store_bool_array)
 827         (_SimdImplBuiltin::_S_load, _SimdImplBuiltin::_S_store)
 828         (_SimdImplBuiltin::_S_reduce, _MaskImplBuiltin::_S_load): Add
 829         constant_evaluated case.
 830         * include/experimental/bits/simd_fixed_size.h
 831         (_S_masked_load): Reword comment.
 832         (__tuple_element_meta, __make_meta, _SimdTuple::_M_apply_r)
 833         (_SimdTuple::_M_subscript_read, _SimdTuple::_M_subscript_write)
 834         (__make_simd_tuple, __optimize_simd_tuple, __extract_part)
 835         (__autocvt_to_simd, _Fixed::__traits::_SimdBase)
 836         (_Fixed::__traits::_SimdCastType, _SimdImplFixedSize): Add
 837         constexpr.
 838         (_SimdTuple::operator[], _M_set): Add constexpr and add
 839         constant_evaluated case.
 840         (_MaskImplFixedSize::_S_load): Add constant_evaluated case.
 841         * include/experimental/bits/simd_scalar.h: Add constexpr.
 842         * include/experimental/bits/simd_x86.h (_CommonImplX86): Add
 843         constexpr and add constant_evaluated case.
 844         (_SimdImplX86::_S_equal_to, _S_not_equal_to, _S_less)
 845         (_S_less_equal): Value-initialize to satisfy constexpr
 846         evaluation.
 847         (_MaskImplX86::_S_load): Add constant_evaluated case.
 848         (_MaskImplX86::_S_store): Add constexpr and constant_evaluated
 849         case. Value-initialize local variables.
 850         (_MaskImplX86::_S_logical_and, _S_logical_or, _S_bit_not)
 851         (_S_bit_and, _S_bit_or, _S_bit_xor): Add constant_evaluated
 852         case.
 853         * testsuite/experimental/simd/pr109261_constexpr_simd.cc: New
 854         test.
 855
 856 2023-05-22  Matthias Kretz  <m.kretz@gsi.de>
 857
 858         * include/experimental/bits/simd_builtin.h (_S_fpclassify): Move
 859         __infn into #ifdef'ed block.
 860         * testsuite/experimental/simd/tests/fpclassify.cc: Declare
 861         constants only when used.
 862         * testsuite/experimental/simd/tests/frexp.cc: Likewise.
 863         * testsuite/experimental/simd/tests/logarithm.cc: Likewise.
 864         * testsuite/experimental/simd/tests/trunc_ceil_floor.cc:
 865         Likewise.
 866         * testsuite/experimental/simd/tests/ldexp_scalbn_scalbln_modf.cc:
 867         Move totest and expect1 into #ifdef'ed block.
 868
 869 2023-05-19  Gerald Pfeifer  <gerald@pfeifer.com>
 870
 871         * doc/xml/manual/strings.xml: Move lafstern.org reference to https.
 872         * doc/html/manual/strings.html: Regenerate.
 873
 874 2023-05-17  Jakub Jelinek  <jakub@redhat.com>
 875
 876         PR libstdc++/109883
 877         * testsuite/26_numerics/headers/cmath/constexpr_std_c++23.cc: New test.
 878
 879 2023-05-17  Jakub Jelinek  <jakub@redhat.com>
 880
 881         PR libstdc++/109883
 882         * include/c_global/cmath (atan2, fmod, pow): Move
 883         __gnu_cxx::__promote_2 using templates after _Float{16,32,64,128} and
 884         __gnu_cxx::__bfloat16_t overloads.
 885         (copysign, fdim, fmax, fmin, hypot, nextafter, remainder, remquo):
 886         Likewise.
 887         (fma): Move __gnu_cxx::__promote_3 using template after
 888         _Float{16,32,64,128} and __gnu_cxx::__bfloat16_t overloads.
 889
 890 2023-05-17  Jonathan Wakely  <jwakely@redhat.com>
 891
 892         * testsuite/18_support/headers/limits/synopsis.cc: Uncomment
 893         checks for float_round_style and float_denorm_style.
 894
 895 2023-05-17  Jonathan Wakely  <jwakely@redhat.com>
 896
 897         * include/bits/c++config: Add system_header pragma.
 898
 899 2023-05-17  Jonathan Wakely  <jwakely@redhat.com>
 900
 901         * include/std/expected (expected::and_then, expected::or_else)
 902         (expected::transform, expected::transform_error): Fix exception
 903         specifications as per LWG 3877.
 904         (expected<void, E>::and_then, expected<void, E>::transform):
 905         Likewise.
 906         * testsuite/20_util/expected/lwg3877.cc: New test.
 907
 908 2023-05-17  Ken Matsui  <kmatsui@cs.washington.edu>
 909
 910         * include/std/type_traits: Use __bool_constant instead of
 911         integral_constant.
 912
 913 2023-05-17  Jonathan Wakely  <jwakely@redhat.com>
 914
 915         * configure: Regenerate.
 916
 917 2023-05-16  Jonathan Wakely  <jwakely@redhat.com>
 918
 919         PR libstdc++/109741
 920         * acinclude.m4 (GLIBCXX_CHECK_ALIGNAS_CACHELINE): Define.
 921         * config.h.in: Regenerate.
 922         * configure: Regenerate.
 923         * configure.ac: Use GLIBCXX_CHECK_ALIGNAS_CACHELINE.
 924         * src/c++11/shared_ptr.cc (__gnu_internal::get_mutex): Do not
 925         align lock table if not supported. use __GCC_DESTRUCTIVE_SIZE
 926         instead of hardcoded 64.
 927
 928 2023-05-16  Jonathan Wakely  <jwakely@redhat.com>
 929
 930         * acinclude.m4 (GLIBCXX_USE_C99): Check for isblank in C++11
 931         mode and define _GLIBCXX_USE_C99_CTYPE. Check for <fenv.h>
 932         functions in C++11 mode and define _GLIBCXX_USE_C99_FENV.
 933         * config.h.in: Regenerate.
 934         * configure: Regenerate.
 935         * include/c_compatibility/fenv.h: Check _GLIBCXX_USE_C99_FENV
 936         instead of _GLIBCXX_USE_C99_FENV_TR1.
 937         * include/c_global/cfenv: Likewise.
 938         * include/c_global/cctype: Check _GLIBCXX_USE_C99_CTYPE instead
 939         of _GLIBCXX_USE_C99_CTYPE_TR1.
 940
 941 2023-05-16  Jonathan Wakely  <jwakely@redhat.com>
 942
 943         * acinclude.m4 (GLIBCXX_USE_C99): Check for <stdint.h> types in
 944         C++11 mode and define _GLIBCXX_USE_C99_STDINT. Check for
 945         <inttypes.h> features in C++11 mode and define
 946         _GLIBCXX_USE_C99_INTTYPES and _GLIBCXX_USE_C99_INTTYPES_WCHAR_T.
 947         * config.h.in: Regenerate.
 948         * configure: Regenerate.
 949         * doc/doxygen/user.cfg.in (PREDEFINED): Add new macros.
 950         * include/bits/chrono.h: Check _GLIBCXX_USE_C99_STDINT instead
 951         of _GLIBCXX_USE_C99_STDINT_TR1.
 952         * include/c_compatibility/inttypes.h: Check
 953         _GLIBCXX_USE_C99_INTTYPES and _GLIBCXX_USE_C99_INTTYPES_WCHAR_T
 954         instead of _GLIBCXX_USE_C99_INTTYPES_TR1 and
 955         _GLIBCXX_USE_C99_INTTYPES_WCHAR_T_TR1.
 956         * include/c_compatibility/stdatomic.h: Check
 957         _GLIBCXX_USE_C99_STDINT instead of _GLIBCXX_USE_C99_STDINT_TR1.
 958         * include/c_compatibility/stdint.h: Likewise.
 959         * include/c_global/cinttypes: Check _GLIBCXX_USE_C99_INTTYPES
 960         and _GLIBCXX_USE_C99_INTTYPES_WCHAR_T instead of
 961         _GLIBCXX_USE_C99_INTTYPES_TR1 and
 962         _GLIBCXX_USE_C99_INTTYPES_WCHAR_T_TR1.
 963         * include/c_global/cstdint: Check _GLIBCXX_USE_C99_STDINT
 964         instead of _GLIBCXX_USE_C99_STDINT_TR1.
 965         * include/std/atomic: Likewise.
 966         * src/c++11/cow-stdexcept.cc: Likewise.
 967         * testsuite/29_atomics/headers/stdatomic.h/c_compat.cc:
 968         Likewise.
 969         * testsuite/lib/libstdc++.exp (check_v3_target_cstdint):
 970         Likewise.
 971
 972 2023-05-16  Jonathan Wakely  <jwakely@redhat.com>
 973
 974         * acinclude.m4 (GLIBCXX_USE_C99): Check for complex inverse trig
 975         functions in C++11 mode and define _GLIBCXX_USE_C99_COMPLEX_ARC.
 976         * config.h.in: Regenerate.
 977         * configure: Regenerate.
 978         * doc/doxygen/user.cfg.in (PREDEFINED): Add new macro.
 979         * include/std/complex: Check _GLIBCXX_USE_C99_COMPLEX_ARC
 980         instead of _GLIBCXX_USE_C99_COMPLEX_TR1.
 981
 982 2023-05-16  Jonathan Wakely  <jwakely@redhat.com>
 983
 984         * testsuite/ext/debug_allocator/check_deallocate_null.cc: Add
 985         assertion to ensure expected exception is throw.
 986
 987 2023-05-16  Jonathan Wakely  <jwakely@redhat.com>
 988
 989         * testsuite/libstdc++-prettyprinters/chrono.cc: Only test
 990         printer for chrono::zoned_time for cx11 ABI and tzdb effective
 991         target.
 992
 993 2023-05-16  Jonathan Wakely  <jwakely@redhat.com>
 994
 995         * acinclude.m4 (GLIBCXX_CHECK_PTHREAD_MUTEX_CLOCKLOCK): Define
 996         _GLIBCXX_USE_PTHREAD_MUTEX_CLOCKLOCK in terms of _GLIBCXX_TSAN.
 997         * configure: Regenerate.
 998
 999 2023-05-12  Jonathan Wakely  <jwakely@redhat.com>
1000
1001         * acinclude.m4 (GLIBCXX_CHECK_C99_TR1): Use a non-null pointer
1002         to check for nan, nanf, and nanl.
1003         * configure: Regenerate.
1004
1005 2023-05-12  Jonathan Wakely  <jwakely@redhat.com>
1006
1007         * include/bits/char_traits.h (char_traits<char16_t>): Do not
1008         depend on _GLIBCXX_USE_C99_STDINT_TR1.
1009         (char_traits<char32_t>): Likewise.
1010         * include/experimental/source_location: Likewise.
1011
1012 2023-05-12  Jonathan Wakely  <jwakely@redhat.com>
1013
1014         * include/std/atomic (atomic_int_least8_t, atomic_uint_least8_t)
1015         (atomic_int_least16_t, atomic_uint_least16_t)
1016         (atomic_int_least32_t, atomic_uint_least32_t)
1017         (atomic_int_least64_t, atomic_uint_least64_t)
1018         (atomic_int_fast16_t, atomic_uint_fast16_t)
1019         (atomic_int_fast32_t, atomic_uint_fast32_t)
1020         (atomic_int_fast64_t, atomic_uint_fast64_t)
1021         (atomic_intmax_t, atomic_uintmax_t): Define unconditionally.
1022         * testsuite/29_atomics/headers/stdatomic.h/c_compat.cc: Adjust.
1023
1024 2023-05-12  Jonathan Wakely  <jwakely@redhat.com>
1025
1026         * include/bits/algorithmfwd.h (shuffle): Do not depend on
1027         _GLIBCXX_USE_C99_STDINT_TR1.
1028         * include/bits/ranges_algo.h (shuffle): Likewise.
1029         * include/bits/stl_algo.h (shuffle): Likewise.
1030         * include/ext/random: Likewise.
1031         * include/ext/throw_allocator.h (random_condition): Likewise.
1032         * include/std/random: Likewise.
1033         * src/c++11/cow-string-inst.cc: Likewise.
1034         * src/c++11/random.cc: Likewise.
1035
1036 2023-05-12  Jonathan Wakely  <jwakely@redhat.com>
1037
1038         * testsuite/experimental/feat-cxx14.cc: Remove dependency on
1039         _GLIBCXX_USE_C99_STDINT_TR1.
1040
1041 2023-05-12  Jonathan Wakely  <jwakely@redhat.com>
1042
1043         * testsuite/22_locale/locale/cons/unicode.cc: Remove dependency
1044         on _GLIBCXX_USE_C99_STDINT_TR1.
1045
1046 2023-05-12  Jonathan Wakely  <jwakely@redhat.com>
1047
1048         * testsuite/21_strings/basic_string_view/typedefs.cc: Remove
1049         dependency on _GLIBCXX_USE_C99_STDINT_TR1.
1050         * testsuite/experimental/string_view/typedefs.cc: Likewise.
1051
1052 2023-05-11  Jonathan Wakely  <jwakely@redhat.com>
1053
1054         * src/c++17/floating_from_chars.cc [USE_STRTOD_FOR_FROM_CHARS]
1055         (auto_locale, auto_ferounding): New class types.
1056         (from_chars_impl): Use auto_locale and auto_ferounding.
1057
1058 2023-05-11  Jonathan Wakely  <jwakely@redhat.com>
1059
1060         PR libstdc++/109772
1061         * include/std/chrono (hh_mm_ss::__fits): Remove variable
1062         template.
1063         (hh_mm_ss::__subseconds): Remove __fits from constraints.
1064         * testsuite/std/time/hh_mm_ss/109772.cc: New test.
1065         * testsuite/std/time/hh_mm_ss/1.cc: Adjust expected size for
1066         hh_mm_ss<duration<int, std::pico>>.
1067
1068 2023-05-11  Jonathan Wakely  <jwakely@redhat.com>
1069
1070         * config/abi/pre/gnu.ver: Export basic_string::_S_allocate.
1071         * include/bits/basic_ios.h: Add static assertion checking
1072         traits_type::value_type.
1073         * include/bits/basic_string.h: Likewise. Do not rebind
1074         allocator, and add static assertion checking its value_type.
1075         (basic_string::_Alloc_traits_impl): Remove class template.
1076         (basic_string::_S_allocate): New static member function.
1077         (basic_string::assign): Use _S_allocate.
1078         * include/bits/basic_string.tcc (basic_string::_M_create)
1079         (basic_string::reserve, basic_string::_M_replace): Likewise.
1080         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/debug.cc:
1081         Disable for C++20 and later.
1082         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/int.cc:
1083         Likweise.
1084
1085 2023-05-11  Jonathan Wakely  <jwakely@redhat.com>
1086
1087         PR libstdc++/109758
1088         * include/bits/std_abs.h (abs(__float128)): Handle negative NaN
1089         and negative zero correctly.
1090         * testsuite/26_numerics/headers/cmath/109758.cc: New test.
1091
1092 2023-05-10  François Dumont  <fdumont@gcc.gnu.org>
1093
1094         * include/bits/hashtable_policy.h
1095         (_NodeBuilder<>::_S_build): Use __node_ptr.
1096         (_ReuseOrAllocNode<>): Use __node_ptr in place of __node_type*.
1097         (_AllocNode<>): Likewise.
1098         (_Equality<>::_M_equal): Remove const_iterator usages. Only preserved
1099         to call std::is_permutation in the non-unique key implementation.
1100         * include/bits/hashtable.h (_Hashtable<>::_M_update_begin()): Capture
1101         _M_begin() once.
1102         (_Hashtable<>::_M_bucket_begin(size_type)): Implement implicitly inline.
1103         (_Hashtable<>::_M_insert_bucket_begin): Likewise.
1104         (_Hashtable<>::_M_remove_bucket_begin): Likewise.
1105         (_Hashtable<>::_M_compute_hash_code): Use __node_ptr rather than
1106         const_iterator.
1107         (_Hashtable<>::find): Likewise.
1108         (_Hashtable<>::_M_emplace): Likewise.
1109         (_Hashtable<>::_M_insert_unique): Likewise.
1110
1111 2023-05-09  Jonathan Wakely  <jwakely@redhat.com>
1112
1113         * python/libstdcxx/v6/printers.py (StdChronoDurationPrinter):
1114         Print floating-point durations correctly.
1115         (StdChronoTimePointPrinter): Support printing only the value,
1116         not the type name. Uncomment handling for known clocks.
1117         (StdChronoZonedTimePrinter): Remove type names from output.
1118         (StdChronoCalendarPrinter): Fix hh_mm_ss member access.
1119         (StdChronoTimeZonePrinter): Add equals sign to output.
1120         * testsuite/libstdc++-prettyprinters/chrono.cc: New test.
1121
1122 2023-05-05  Alexandre Oliva  <oliva@adacore.com>
1123
1124         * testsuite/20_util/from_chars/4.cc: Skip long double test06
1125         on aarch64-vxworks.
1126         * testsuite/20_util/to_chars/long_double.cc: Xfail run on
1127         aarch64-vxworks.
1128
1129 2023-05-04  Jonathan Wakely  <jwakely@redhat.com>
1130
1131         * doc/xml/manual/abi.xml (abi.versioning.history): Document
1132         libstdc++.so.6.0.32 and GLIBCXX_3.4.32 version.
1133         * doc/html/manual/abi.html: Regenerate.
1134
1135 2023-05-04  Florian Weimer  <fweimer@redhat.com>
1136
1137         * doc/xml/manual/abi.xml (abi.versioning.history): Add
1138         GCC_7.0.0, GCC_9.0.0, GCC_11.0, GCC_12.0.0, GCC_13.0.0 for
1139         libgcc_s.
1140
1141 2023-05-03  Jakub Jelinek  <jakub@redhat.com>
1142
1143         * src/c++17/floating_from_chars.cc
1144         (_ZSt10from_charsPKcS0_RDF128_St12chars_format): New alias to
1145         _ZSt10from_charsPKcS0_Ru9__ieee128St12chars_format.
1146         * src/c++17/floating_to_chars.cc (_ZSt8to_charsPcS_DF128_): New alias to
1147         _ZSt8to_charsPcS_u9__ieee128.
1148         (_ZSt8to_charsPcS_DF128_St12chars_format): New alias to
1149         _ZSt8to_charsPcS_u9__ieee128St12chars_format.
1150         (_ZSt8to_charsPcS_DF128_St12chars_formati): New alias to
1151         _ZSt8to_charsPcS_u9__ieee128St12chars_formati.
1152         * config/abi/post/powerpc64le-linux-gnu/baseline_symbols.txt: Updated.
1153
1154 2023-05-03  Jakub Jelinek  <jakub@redhat.com>
1155
1156         * configure.host (abi_baseline_pair): Use powerpc64le-linux-gnu
1157         rather than powerpc64-linux-gnu for powerpc64le*-linux*.
1158         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Remove
1159         _ZTI*DF128_, _ZTI*DF64x symbols and symbols in
1160         GLIBCXX_IEEE128_3.4.{29,30,31} and CXXABI_IEEE128_1.3.13 symbol
1161         versions.
1162         * config/abi/post/powerpc64le-linux-gnu/baseline_symbols.txt: New
1163         file.
1164
1165 2023-05-03  Kefu Chai  <kefu.chai@scylladb.com>
1166             Jonathan Wakely  <jwakely@redhat.com>
1167
1168         PR libstdc++/109703
1169         * include/bits/basic_string.h (basic_string(Iter, Iter, Alloc)):
1170         Initialize _M_string_length.
1171
1172 2023-05-02  Jakub Jelinek  <jakub@redhat.com>
1173
1174         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
1175         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
1176         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
1177         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
1178         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
1179         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
1180         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
1181         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
1182
1183 2023-05-02  Jakub Jelinek  <jakub@redhat.com>
1184
1185         PR libstdc++/109694
1186         * src/c++98/ios_init.cc: Add #pragma GCC diagnostic ignored for
1187         -Wattribute-alias.
1188
1189 2023-04-28  Jonathan Wakely  <jwakely@redhat.com>
1190
1191         * include/bits/random.h (gamma_distribution): Add to the right
1192         doxygen group.
1193         (discrete_distribution, piecewise_constant_distribution)
1194         (piecewise_linear_distribution): Create a new doxygen group and
1195         fix the incomplete doxygen comments.
1196         * include/bits/uniform_int_dist.h (uniform_int_distribution):
1197         Add to doxygen group.
1198
1199 2023-04-28  Jonathan Wakely  <jwakely@redhat.com>
1200
1201         * include/bits/uses_allocator.h: Add missing @file comment.
1202         * include/bits/regex.tcc: Remove stray doxygen comments.
1203         * include/experimental/memory_resource: Likewise.
1204         * include/std/bit: Tweak doxygen @cond comments.
1205         * include/std/expected: Likewise.
1206         * include/std/numbers: Likewise.
1207
1208 2023-04-28  Jonathan Wakely  <jwakely@redhat.com>
1209
1210         * doc/doxygen/user.cfg.in (STRIP_FROM_PATH): Remove prefixes
1211         from header paths.
1212
1213 2023-04-28  Jonathan Wakely  <jwakely@redhat.com>
1214
1215         * include/bits/move.h: Simplify opening/closing namespace std.
1216
1217 2023-04-28  Jakub Jelinek  <jakub@redhat.com>
1218
1219         PR libstdc++/108969
1220         * config/abi/pre/gnu.ver (GLIBCXX_3.4.32): Export
1221         _ZSt21ios_base_library_initv.
1222         * testsuite/util/testsuite_abi.cc (check_version): Add GLIBCXX_3.4.32
1223         symver and make it the latestp.
1224         * src/c++98/ios_init.cc (ios_base_library_init): New alias.
1225         * acinclude.m4 (libtool_VERSION): Change to 6:32:0.
1226         * include/std/iostream: If init_priority attribute is supported
1227         and _GLIBCXX_SYMVER_GNU, force undefined _ZSt21ios_base_library_initv
1228         symbol into the object.
1229         * configure: Regenerated.
1230
1231 2023-04-27  Jonathan Wakely  <jwakely@redhat.com>
1232
1233         * include/bits/mofunc_impl.h: Fix typo in doxygen comment.
1234         * include/std/format: Likewise.
1235
1236 2023-04-27  Jonathan Wakely  <jwakely@redhat.com>
1237
1238         * doc/doxygen/user.cfg.in (FORMULA_TRANSPARENT, DOT_FONTNAME)
1239         (DOT_FONTSIZE, DOT_TRANSPARENT): Remove obsolete options.
1240
1241 2023-04-27  Jonathan Wakely  <jwakely@redhat.com>
1242
1243         * doc/doxygen/user.cfg.in (SOURCE_BROWSER): Only set to YES for
1244         HTML docs.
1245         * include/bits/gslice_array.h (_DEFINE_VALARRAY_OPERATOR): Omit
1246         from doxygen docs.
1247         * include/bits/indirect_array.h (_DEFINE_VALARRAY_OPERATOR):
1248         Likewise.
1249         * include/bits/mask_array.h (_DEFINE_VALARRAY_OPERATOR):
1250         Likewise.
1251         * include/bits/slice_array.h (_DEFINE_VALARRAY_OPERATOR):
1252         Likewise.
1253         * include/std/valarray (_DEFINE_VALARRAY_UNARY_OPERATOR)
1254         (_DEFINE_VALARRAY_AUGMENTED_ASSIGNMENT)
1255         (_DEFINE_VALARRAY_EXPR_AUGMENTED_ASSIGNMENT)
1256         (_DEFINE_BINARY_OPERATOR): Likewise.
1257
1258 2023-04-27  Jonathan Wakely  <jwakely@redhat.com>
1259
1260         * include/bits/memory_resource.h: Improve doxygen comments.
1261         * include/std/memory_resource: Likewise.
1262
1263 2023-04-27  Jonathan Wakely  <jwakely@redhat.com>
1264
1265         PR libstdc++/40380
1266         * include/bits/basic_string.h: Improve doxygen comments.
1267         * include/bits/cow_string.h: Likewise.
1268         * include/bits/forward_list.h: Likewise.
1269         * include/bits/fs_dir.h: Likewise.
1270         * include/bits/fs_path.h: Likewise.
1271         * include/bits/quoted_string.h: Likewise.
1272         * include/bits/stl_bvector.h: Likewise.
1273         * include/bits/stl_map.h: Likewise.
1274         * include/bits/stl_multimap.h: Likewise.
1275         * include/bits/stl_multiset.h: Likewise.
1276         * include/bits/stl_set.h: Likewise.
1277         * include/bits/stl_vector.h: Likewise.
1278         * include/bits/unordered_map.h: Likewise.
1279         * include/bits/unordered_set.h: Likewise.
1280         * include/std/filesystem: Likewise.
1281         * include/std/iomanip: Likewise.
1282
1283 2023-04-27  Jonathan Wakely  <jwakely@redhat.com>
1284
1285         PR libstdc++/105081
1286         * src/c++11/random.cc (__throw_syserr): New function.
1287         (random_device::_M_init, random_device::_M_init_pretr1): Use new
1288         function for bad tokens.
1289         (random_device::_M_getval): Use new function for read errors.
1290         * testsuite/util/testsuite_random.h (random_device_available):
1291         Change catch handler to use std::system_error.
1292
1293 2023-04-24  Patrick Palka  <ppalka@redhat.com>
1294
1295         * include/bits/max_size_type.h (__max_diff_type::operator>>=):
1296         Fix propagation of sign bit.
1297         * testsuite/std/ranges/iota/max_size_type.cc: Avoid using the
1298         non-standard 'signed typedef-name'.  Add some compile-time tests
1299         for right-shifting a negative __max_diff_type value by more than
1300         one.
1301
1302 2023-04-19  Patrick Palka  <ppalka@redhat.com>
1303             Jonathan Wakely  <jwakely@redhat.com>
1304
1305         PR c++/100157
1306         * include/bits/utility.h (_Nth_type): Conditionally define in
1307         terms of __type_pack_element if available.
1308         * testsuite/20_util/tuple/element_access/get_neg.cc: Prune
1309         additional errors from the new built-in.
1310
1311 2023-04-19  Jonathan Wakely  <jwakely@redhat.com>
1312
1313         Revert:
1314         2023-04-18  Jonathan Wakely  <jwakely@redhat.com>
1315
1316         PR libstdc++/108969
1317         * src/Makefile.am: Move globals_io.cc to here.
1318         * src/Makefile.in: Regenerate.
1319         * src/c++98/Makefile.am: Remove globals_io.cc from here.
1320         * src/c++98/Makefile.in: Regenerate.
1321         * src/c++98/globals_io.cc [_GLIBCXX_SYMVER_GNU] (cin): Adjust
1322         symbol name and then export with GLIBCXX_3.4.31 symver.
1323         (cout, cerr, clog, wcin, wcout, wcerr, wclog): Likewise.
1324         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt:
1325         Regenerate.
1326         * config/abi/post/i486-linux-gnu/baseline_symbols.txt:
1327         Regenerate.
1328         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt:
1329         Regenerate.
1330         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt:
1331         Regenerate.
1332         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt:
1333         Regenerate.
1334         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt:
1335         Regenerate.
1336         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt:
1337         Regenerate.
1338         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt:
1339         Regenerate.
1340         * config/abi/pre/gnu.ver: Add iostream objects to new symver.
1341
1342 2023-04-19  Jonathan Wakely  <jwakely@redhat.com>
1343
1344         Revert:
1345         2023-04-18  Jonathan Wakely  <jwakely@redhat.com>
1346
1347         PR libstdc++/108969
1348         * config/abi/pre/gnu.ver: Fix preprocessor condition.
1349
1350 2023-04-18  Jonathan Wakely  <jwakely@redhat.com>
1351
1352         * doc/xml/manual/extensions.xml: Fix example to declare and
1353         qualify std::free, and use NULL instead of 0.
1354         * doc/html/manual/ext_demangling.html: Regenerate.
1355         * libsupc++/cxxabi.h: Adjust doxygen comments.
1356
1357 2023-04-18  Jonathan Wakely  <jwakely@redhat.com>
1358
1359         PR libstdc++/108969
1360         * config/abi/pre/gnu.ver: Fix preprocessor condition.
1361
1362 2023-04-18  Jonathan Wakely  <jwakely@redhat.com>
1363
1364         PR libstdc++/108969
1365         * src/Makefile.am: Move globals_io.cc to here.
1366         * src/Makefile.in: Regenerate.
1367         * src/c++98/Makefile.am: Remove globals_io.cc from here.
1368         * src/c++98/Makefile.in: Regenerate.
1369         * src/c++98/globals_io.cc [_GLIBCXX_SYMVER_GNU] (cin): Adjust
1370         symbol name and then export with GLIBCXX_3.4.31 symver.
1371         (cout, cerr, clog, wcin, wcout, wcerr, wclog): Likewise.
1372         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt:
1373         Regenerate.
1374         * config/abi/post/i486-linux-gnu/baseline_symbols.txt:
1375         Regenerate.
1376         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt:
1377         Regenerate.
1378         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt:
1379         Regenerate.
1380         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt:
1381         Regenerate.
1382         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt:
1383         Regenerate.
1384         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt:
1385         Regenerate.
1386         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt:
1387         Regenerate.
1388         * config/abi/pre/gnu.ver: Add iostream objects to new symver.
1389
1390 2023-04-18  Patrick Palka  <ppalka@redhat.com>
1391
1392         PR libstdc++/108827
1393         * include/bits/ranges_cmp.h (__cpp_lib_ranges): Bump value
1394         for C++23.
1395         * include/std/ranges (range_adaptor_closure): Define for C++23.
1396         * include/std/version (__cpp_lib_ranges): Bump value for
1397         C++23.
1398         * testsuite/std/ranges/version_c++23.cc: Bump expected value
1399         of __cpp_lib_ranges.
1400         * testsuite/std/ranges/range_adaptor_closure.cc: New test.
1401
1402 2023-04-18  Patrick Palka  <ppalka@redhat.com>
1403
1404         * include/bits/ranges_algo.h (__cpp_lib_ranges_contains):
1405         Define for C++23.
1406         (__cpp_lib_ranges_iota): Likewise.
1407         (__cpp_lib_ranges_find_last): Likewise.
1408         (__cpp_lib_fold): Rename to ...
1409         (__cpp_lib_ranges_fold): ... this.
1410         * include/std/version: As above.
1411         * testsuite/25_algorithms/fold_left/1.cc: Adjust after
1412         renaming __cpp_lib_fold.
1413         * testsuite/std/ranges/version_c++23.cc: Verify values
1414         of the above feature-test macros.
1415
1416 2023-04-18  Patrick Palka  <ppalka@redhat.com>
1417
1418         PR libstdc++/109525
1419         * include/std/ranges (views::_AsConst::operator()): Add
1420         missing const to constant_range test.
1421         * testsuite/std/ranges/adaptors/as_const/1.cc (test02):
1422         Improve formatting.  Adjust expected type of v2.
1423         (test03): New test.
1424
1425 2023-04-14  Patrick Palka  <ppalka@redhat.com>
1426
1427         * include/bits/ranges_base.h (const_iterator_t): Define for C++23.
1428         (const_sentinel_t): Likewise.
1429         (range_const_reference_t): Likewise.
1430         (constant_range): Likewise.
1431         (__cust_access::__possibly_const_range): Likewise, replacing ...
1432         (__cust_access::__as_const): ... this.
1433         (__cust_access::_CBegin::operator()): Redefine for C++23 as per P2278R4.
1434         (__cust_access::_CEnd::operator()): Likewise.
1435         (__cust_access::_CRBegin::operator()): Likewise.
1436         (__cust_access::_CREnd::operator()): Likewise.
1437         (__cust_access::_CData::operator()): Likewise.
1438         * include/bits/ranges_util.h (ranges::__detail::__different_from):
1439         Make it an alias of std::__detail::__different_from.
1440         (view_interface::cbegin): Define for C++23.
1441         (view_interface::cend): Likewise.
1442         * include/bits/stl_iterator.h (__detail::__different_from): Define.
1443         (iter_const_reference_t): Define for C++23.
1444         (__detail::__constant_iterator): Likewise.
1445         (__detail::__is_const_iterator): Likewise.
1446         (__detail::__not_a_const_iterator): Likewise.
1447         (__detail::__iter_const_rvalue_reference_t): Likewise.
1448         (__detail::__basic_const_iter_cat):: Likewise.
1449         (const_iterator): Likewise.
1450         (__detail::__const_sentinel): Likewise.
1451         (const_sentinel): Likewise.
1452         (basic_const_iterator): Likewise.
1453         (common_type<basic_const_iterator<_Tp>, _Up>): Likewise.
1454         (common_type<_Up, basic_const_iterator<_Tp>>): Likewise.
1455         (common_type<basic_const_iterator<_Tp>, basic_const_iterator<Up>>):
1456         Likewise.
1457         (make_const_iterator): Define for C++23.
1458         (make_const_sentinel): Likewise.
1459         * include/std/ranges (__cpp_lib_ranges_as_const): Likewise.
1460         (as_const_view): Likewise.
1461         (enable_borrowed_range<as_const_view>): Likewise.
1462         (views::__detail::__is_ref_view): Likewise.
1463         (views::__detail::__can_is_const_view): Likewise.
1464         (views::_AsConst, views::as_const): Likewise.
1465         * include/std/span (span::const_iterator): Likewise.
1466         (span::const_reverse_iterator): Likewise.
1467         (span::cbegin): Likewise.
1468         (span::cend): Likewise.
1469         (span::crbegin): Likewise.
1470         (span::crend): Likewise.
1471         * include/std/version (__cpp_lib_ranges_as_const): Likewise.
1472         * testsuite/std/ranges/adaptors/join.cc (test06): Adjust to
1473         behave independently of C++20 vs C++23.
1474         * testsuite/std/ranges/version_c++23.cc: Verify value of
1475         __cpp_lib_ranges_as_const macro.
1476         * testsuite/24_iterators/const_iterator/1.cc: New test.
1477         * testsuite/std/ranges/adaptors/as_const/1.cc: New test.
1478
1479 2023-04-14  Patrick Palka  <ppalka@redhat.com>
1480
1481         * include/bits/ranges_base.h (__cust_access::__as_const)
1482         (__cust_access::_CBegin, __cust::cbegin)
1483         (__cust_access::_CEnd, __cust::cend)
1484         (__cust_access::_CRBegin, __cust::crbegin)
1485         (__cust_access::_CREnd, __cust::crend)
1486         (__cust_access::_CData, __cust::cdata): Move down definitions to
1487         shortly after the definition of input_range.
1488
1489 2023-04-14  Patrick Palka  <ppalka@redhat.com>
1490
1491         * include/bits/ranges_algo.h: Include <optional> for C++23.
1492         (__cpp_lib_fold): Define for C++23.
1493         (in_value_result): Likewise.
1494         (__detail::__flipped): Likewise.
1495         (__detail::__indirectly_binary_left_foldable_impl): Likewise.
1496         (__detail::__indirectly_binary_left_foldable): Likewise.
1497         (___detail:__indirectly_binary_right_foldable): Likewise.
1498         (fold_left_with_iter_result): Likewise.
1499         (__fold_left_with_iter_fn, fold_left_with_iter): Likewise.
1500         (__fold_left_fn, fold_left): Likewise.
1501         (__fold_left_first_with_iter_fn, fold_left_first_with_iter):
1502         Likewise.
1503         (__fold_left_first_fn, fold_left_first): Likewise.
1504         (__fold_right_fn, fold_right): Likewise.
1505         (__fold_right_last_fn, fold_right_last): Likewise.
1506         * include/std/version (__cpp_lib_fold): Likewise.
1507         * testsuite/25_algorithms/fold_left/1.cc: New test.
1508         * testsuite/25_algorithms/fold_right/1.cc: New test.
1509
1510 2023-04-14  Jonathan Wakely  <jwakely@redhat.com>
1511
1512         * include/std/format (formatter): Add comment to deleted default
1513         constructor of primary template.
1514         (_Checking_scanner): Add static_assert.
1515
1516 2023-04-12  Jonathan Wakely  <jwakely@redhat.com>
1517
1518         * doc/xml/manual/using.xml: Document libstdc++exp.a library.
1519         * doc/html/*: Regenerate.
1520
1521 2023-04-12  Jonathan Wakely  <jwakely@redhat.com>
1522
1523         * testsuite/17_intro/names.cc [_AIX]: Do not define policy.
1524         * testsuite/19_diagnostics/error_code/cons/lwg3629.cc: Rename
1525         namespace to avoid clashing with libc struct.
1526         * testsuite/19_diagnostics/error_condition/cons/lwg3629.cc:
1527         Likewise.
1528         * testsuite/23_containers/unordered_map/96088.cc: Skip on AIX.
1529         * testsuite/23_containers/unordered_multimap/96088.cc: Likewise.
1530         * testsuite/23_containers/unordered_multiset/96088.cc: Likewise.
1531         * testsuite/23_containers/unordered_set/96088.cc: Likewise.
1532         * testsuite/experimental/synchronized_value.cc: Require gthreads
1533         and add missing option for pthreads targets.
1534
1535 2023-04-12  Patrick Palka  <ppalka@redhat.com>
1536
1537         * include/std/ranges (__cpp_lib_ranges_enumerate): Define
1538         for C++23.
1539         (__detail::__range_with_movable_reference): Likewise.
1540         (enumerate_view): Likewise.
1541         (enumerate_view::_Iterator): Likewise.
1542         (enumerate_view::_Sentinel): Likewise.
1543         (views::__detail::__can_enumerate_view): Likewise.
1544         (views::_Enumerate, views::enumerate): Likewise.
1545         * include/std/version (__cpp_lib_ranges_enumerate): Likewise.
1546         * testsuite/std/ranges/version_c++23.cc: Verify value of
1547         __cpp_lib_ranges_enumerate.
1548         * testsuite/std/ranges/adaptors/enumerate/1.cc: New test.
1549
1550 2023-04-12  Patrick Palka  <ppalka@redhat.com>
1551
1552         * include/std/ranges (lazy_split_view::_OuterIter::_OuterIter):
1553         Propagate _M_trailing_empty in the const-converting constructor
1554         as per LWG 3904.
1555         * testsuite/std/ranges/adaptors/adjacent/1.cc (test04): Correct
1556         assertion.
1557         * testsuite/std/ranges/adaptors/lazy_split.cc (test12): New test.
1558
1559 2023-04-12  Patrick Palka  <ppalka@redhat.com>
1560
1561         * src/c++17/floating_from_chars.cc: Include <algorithm>,
1562         <iterator>, <limits> and <cstdint>.
1563
1564 2023-04-12  Patrick Palka  <ppalka@redhat.com>
1565
1566         PR libstdc++/108291
1567         * include/std/ranges (chunk_by_view::_M_find_next): Generalize
1568         parameter types of the lambda wrapper passed to adjacent_find.
1569         (chunk_by_view::_M_find_prev): Likewise.
1570         * testsuite/std/ranges/adaptors/chunk_by/1.cc (test04, test05):
1571         New tests.
1572
1573 2023-04-12  Jonathan Wakely  <jwakely@redhat.com>
1574
1575         PR libstdc++/109482
1576         * include/experimental/internet (basic_endpoint::basic_endpoint()):
1577         Ensure that the required union members are active. Only define
1578         as constexpr for C++20 and later.
1579         (basic_endpoint::basic_endpoint(const protocol_type&, port_type)):
1580         Likewise.
1581         * testsuite/experimental/net/internet/endpoint/cons.cc: Only
1582         check constexpr default constructor for C++20 and later.
1583         * testsuite/experimental/net/internet/endpoint/extensible.cc:
1584         Likewise.
1585
1586 2023-04-12  Jonathan Wakely  <jwakely@redhat.com>
1587
1588         * src/c++20/tzdata.zi: Import new file from 2023c release.
1589
1590 2023-04-05  Arsen Arsenović  <arsen@aarsen.me>
1591
1592         * include/precompiled/stdc++.h (C++17): Don't double-include
1593         <charconv>, once with wrong conditions.
1594         * testsuite/18_support/96817.cc: Require hosted.
1595         * testsuite/18_support/bad_exception/59392.cc: Ditto.
1596         * testsuite/20_util/scoped_allocator/108952.cc: Ditto.
1597         * testsuite/20_util/uses_allocator/lwg3527.cc: Ditto.
1598         * testsuite/29_atomics/atomic/operators/pointer_partial_void.cc:
1599         Ditto.
1600
1601 2023-04-05  Arsen Arsenović  <arsen@aarsen.me>
1602
1603         * include/bits/c++config: When __STDC_HOSTED__ is zero,
1604         disable _GLIBCXX_DEBUG and, if it was set, enable
1605         _GLIBCXX_ASSERTIONS.
1606         * testsuite/lib/libstdc++.exp (check_v3_target_debug_mode):
1607         Include <bits/c++config.h> when determining whether debug is
1608         set, in order to inherit the logic from above
1609
1610 2023-04-05  Arsen Arsenović  <arsen@aarsen.me>
1611
1612         * testsuite/17_intro/versionconflict.cc: New test.
1613         * include/std/version: Allow disabling the system_header pragma
1614         via _GLIBCXX_TESTING_SYSHDR.
1615
1616 2023-04-05  Arsen Arsenović  <arsen@aarsen.me>
1617
1618         * include/bits/unique_ptr.h (__cpp_lib_constexpr_memory):
1619         Synchronize the definition block with...
1620         * include/bits/ptr_traits.h (__cpp_lib_constexpr_memory):
1621         ... this one here.  Also define the 202202L value, rather than
1622         leaving it up to purely unique_ptr.h, so that the value is
1623         synchronized across all headers.
1624         (__gnu_debug::_Safe_iterator_base): Move into new conditional
1625         block.
1626         * include/std/memory (__cpp_lib_atomic_value_initialization):
1627         Define on freestanding under the same conditions as in
1628         atomic_base.h.
1629         * include/std/version (__cpp_lib_robust_nonmodifying_seq_ops):
1630         Also define on freestanding.
1631         (__cpp_lib_to_chars): Ditto.
1632         (__cpp_lib_gcd): Ditto.
1633         (__cpp_lib_gcd_lcm): Ditto.
1634         (__cpp_lib_raw_memory_algorithms): Ditto.
1635         (__cpp_lib_array_constexpr): Ditto.
1636         (__cpp_lib_nonmember_container_access): Ditto.
1637         (__cpp_lib_clamp): Ditto.
1638         (__cpp_lib_constexpr_char_traits): Ditto.
1639         (__cpp_lib_constexpr_string): Ditto.
1640         (__cpp_lib_sample): Ditto.
1641         (__cpp_lib_lcm): Ditto.
1642         (__cpp_lib_constexpr_iterator): Ditto.
1643         (__cpp_lib_constexpr_char_traits): Ditto.
1644         (__cpp_lib_interpolate): Ditto.
1645         (__cpp_lib_constexpr_utility): Ditto.
1646         (__cpp_lib_shift): Ditto.
1647         (__cpp_lib_ranges): Ditto.
1648         (__cpp_lib_move_iterator_concept): Ditto.
1649         (__cpp_lib_constexpr_numeric): Ditto.
1650         (__cpp_lib_constexpr_functional): Ditto.
1651         (__cpp_lib_constexpr_algorithms): Ditto.
1652         (__cpp_lib_constexpr_tuple): Ditto.
1653         (__cpp_lib_constexpr_memory): Ditto.
1654
1655 2023-04-05  John David Anglin  <danglin@gcc.gnu.org>
1656
1657         * testsuite/22_locale/locale/cons/12658_thread-2.cc: Double
1658         timeout factor on hppa*-*-*.
1659
1660 2023-04-05  Jonathan Wakely  <jwakely@redhat.com>
1661
1662         * include/bits/regex.h (sub_match::swap): New function.
1663         * testsuite/28_regex/sub_match/lwg3204.cc: New test.
1664
1665 2023-04-04  Jonathan Wakely  <jwakely@redhat.com>
1666
1667         * doc/xml/manual/extensions.xml: Remove std::bad_exception from
1668         example program.
1669         * doc/html/manual/ext_demangling.html: Regenerate.
1670
1671 2023-03-31  Jonathan Wakely  <jwakely@redhat.com>
1672
1673         PR tree-optimization/107087
1674         * include/bits/cow_string.h (basic_string::size()): Add
1675         optimizer hint that _S_empty_rep()._M_length is always zero.
1676         (basic_string::length()): Call size().
1677
1678 2023-03-31  Jonathan Wakely  <jwakely@redhat.com>
1679
1680         PR libstdc++/109339
1681         * include/std/stop_token (_Stop_state_ptr(const stop_source&)):
1682         Add attribute access with access-mode 'none'.
1683         * testsuite/30_threads/stop_token/stop_source/109339.cc: New test.
1684
1685 2023-03-31  Jonathan Wakely  <jwakely@redhat.com>
1686
1687         * include/experimental/internet (ip::basic_endpoint::_M_if_v6):
1688         Revert change from member function to data member. Fix for
1689         constant evaluation by detecting which union member is active.
1690         (ip::basic_endpoint::resize): Revert changes to update _M_is_v6
1691         flag.
1692
1693 2023-03-29  Jonathan Wakely  <jwakely@redhat.com>
1694
1695         PR libstdc++/109242
1696         * testsuite/20_util/optional/monadic/pr109340.cc: Moved to...
1697         * testsuite/20_util/optional/monadic/pr109242.cc: ...here.
1698
1699 2023-03-29  Jonathan Wakely  <jwakely@redhat.com>
1700
1701         * include/experimental/internet (ip::make_address): Implement
1702         missing overload.
1703         (ip::address_v4::broadcast()): Avoid undefined shift.
1704         (ip::basic_endpoint): Fix member functions for constexpr.
1705         (ip::basic_endpoint::_M_is_v6): Replace member function with
1706         data member, adjust member functions using it.
1707         (ip::basic_endpoint::resize): Update _M_is_v6 based on sockaddr
1708         content.
1709         * testsuite/experimental/net/internet/address/v4/cons.cc: Fix
1710         constexpr checks to work in C++14.
1711         * testsuite/experimental/net/internet/address/v4/creation.cc:
1712         Likewise.
1713         * testsuite/experimental/net/internet/endpoint/cons.cc:
1714         Likewise.
1715         * testsuite/experimental/net/internet/network/v4/cons.cc:
1716         Likewise.
1717         * testsuite/experimental/net/internet/network/v4/members.cc:
1718         Likewise.
1719         * testsuite/experimental/net/internet/endpoint/extensible.cc: New test.
1720
1721 2023-03-29  Jonathan Wakely  <jwakely@redhat.com>
1722
1723         * include/std/expected (expected::value() &): Use const lvalue
1724         for unex member passed to bad_expected_access constructor, as
1725         per LWG 3843.
1726
1727 2023-03-29  Jonathan Wakely  <jwakely@redhat.com>
1728
1729         PR libstdc++/109340
1730         * include/std/expected (expected::transform): Use
1731         std::remove_cv_t instead of std::remove_cvref_t.
1732         (expected::transform_error): Likewise.
1733         (expected<cv void, E>::transform): Likewise.
1734         (expected<cv void, E>::transform_error): Likewise.
1735         * include/std/optional (transform): Use std::remove_cv_t.
1736         * testsuite/20_util/optional/monadic/pr109340.cc: New test.
1737
1738 2023-03-29  Jonathan Wakely  <jwakely@redhat.com>
1739
1740         * include/std/optional (optional): Adjust static assertion to
1741         reject arrays and functions as well as references.
1742         * testsuite/20_util/optional/requirements_neg.cc: New test.
1743
1744 2023-03-28  Jonathan Wakely  <jwakely@redhat.com>
1745
1746         PR libstdc++/103387
1747         * include/bits/istream.tcc (istream::_M_extract(ValueT&)): Use
1748         std::use_facet instead of cached _M_num_get facet.
1749         (istream::operator>>(short&)): Likewise.
1750         (istream::operator>>(int&)): Likewise.
1751         * include/bits/ostream.tcc (ostream::_M_insert(ValueT)): Use
1752         std::use_facet instead of cached _M_num_put facet.
1753
1754 2023-03-28  Jonathan Wakely  <jwakely@redhat.com>
1755
1756         * include/bits/char_traits.h (char_traits::copy): Return without
1757         using memcpy if n==0.
1758         (char_traits::assign): Likewise for memset.
1759
1760 2023-03-28  Jonathan Wakely  <jwakely@redhat.com>
1761
1762         PR libstdc++/109299
1763         * include/bits/basic_string.h (basic_string::_M_is_local()): Add
1764         hint for compiler that local strings fit in the local buffer.
1765
1766 2023-03-28  Jonathan Wakely  <jwakely@redhat.com>
1767
1768         PR libstdc++/109288
1769         * include/std/chrono (__detail::__get_leap_second_info): Update
1770         expiry date of hardcoded leapseconds list.
1771         * src/c++20/tzdb.cc (tzdb_list::_Node::_S_read_leap_seconds()):
1772         Likewise.
1773         * src/c++20/tzdata.zi: Import new file from 2023a release.
1774         * testsuite/std/time/time_zone/get_info_local.cc: Only check
1775         transitions for Egypt up to 2014.
1776
1777 2023-03-28  Matthias Kretz  <m.kretz@gsi.de>
1778
1779         * include/experimental/bits/simd.h (is_simd_flag_type): New.
1780         (_IsSimdFlagType): New.
1781         (copy_from, copy_to, load ctors): Constrain _Flags using
1782         _IsSimdFlagType.
1783
1784 2023-03-28  Matthias Kretz  <m.kretz@gsi.de>
1785
1786         * include/experimental/bits/simd_x86.h (_SimdImplX86): Use
1787         _Base::_S_divides if the optimized _S_divides function is hidden
1788         via the preprocessor.
1789
1790 2023-03-27  Jakub Jelinek  <jakub@redhat.com>
1791
1792         * testsuite/experimental/net/timer/waitable/dest.cc: Avoid -Wformat
1793         warning if size_t is not unsigned long.
1794
1795 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
1796
1797         * include/bits/shared_ptr_atomic.h (atomic::operator=(nullptr_t)):
1798         Add overload, as per LWG 3893.
1799         * testsuite/20_util/shared_ptr/atomic/atomic_shared_ptr.cc:
1800         Check assignment from nullptr.
1801
1802 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
1803
1804         * include/std/format (formatter<const charT[N], charT>): Do not
1805         define partial speclialization, as per LWG 3833.
1806         * testsuite/std/format/formatter/requirements.cc: Check it.
1807
1808 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
1809
1810         * include/std/utility (__cpp_lib_constexpr_algorithms): Define,
1811         as per LWG 3792.
1812         * testsuite/20_util/exchange/constexpr.cc: Check for it.
1813
1814 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
1815
1816         * include/std/version (__cpp_lib_format): Define.
1817         * testsuite/std/format/functions/format.cc: Check it.
1818
1819 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
1820
1821         * include/bits/basic_string.tcc (basic_string::resize_and_overwrite):
1822         Pass rvalues to the callback, as now allowed by LWG 3645.
1823         Enforce preconditions on the return value.
1824         * testsuite/21_strings/basic_string/capacity/char/resize_and_overwrite.cc:
1825         Adjust.
1826
1827 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
1828
1829         * include/std/format: Add a comment noting that the resolution
1830         of LWG 3720 has been applied..
1831
1832 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
1833
1834         * include/bits/regex.h (match_results): Add allocator-extended
1835         copy and move constructors, as per LWG 2195.
1836         * testsuite/28_regex/match_results/ctors/char/alloc.cc: New test.
1837
1838 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
1839
1840         * include/bits/stream_iterator.h (istream_iterator): Add
1841         constexpr to copy constructor, as per LWG 3600.
1842         * testsuite/24_iterators/istream_iterator/cons/constexpr.cc:
1843         Check copy construction.
1844
1845 2023-03-21  Matthias Kretz  <m.kretz@gsi.de>
1846
1847         * include/experimental/bits/simd_x86.h
1848         (_SimdImplX86::_S_divides): Replace test for __GCC_IEC_559 == 0
1849         with __RECIPROCAL_MATH__.
1850
1851 2023-03-21  Matthias Kretz  <m.kretz@gsi.de>
1852
1853         * include/experimental/bits/simd_detail.h: Don't define
1854         _GLIBCXX_SIMD_WORKAROUND_PR90993 for Clang.
1855         * include/experimental/bits/simd_x86.h (_S_divides): Remove
1856         check for __clang__.
1857
1858 2023-03-21  Matthias Kretz  <m.kretz@gsi.de>
1859
1860         * include/experimental/bits/simd_detail.h: Don't declare the
1861         simd API as constexpr with Clang.
1862         * include/experimental/bits/simd_x86.h (__movm): New.
1863         (_S_blend_avx512): Resolve FIXME. Implement blend using __movm
1864         and ?:.
1865         (_SimdImplX86::_S_masked_unary): Clang does not implement the
1866         same builtins. Implement the function using __movm, ?:, and -
1867         operators on vector_size types instead.
1868
1869 2023-03-21  Matthias Kretz  <m.kretz@gsi.de>
1870
1871         * testsuite/experimental/simd/tests/operators.cc: Clang doesn't
1872         define __GCC_IEC_559. Use __STDC_IEC_559__ instead.
1873
1874 2023-03-20  Jonathan Wakely  <jwakely@redhat.com>
1875
1876         * src/filesystem/ops-common.h (get_temp_directory_from_env): Fix
1877         formatting.
1878
1879 2023-03-20  Marek Polacek  <polacek@redhat.com>
1880
1881         PR c++/109159
1882         * testsuite/20_util/pair/cons/explicit_construct.cc: Adjust dg-error.
1883         * testsuite/20_util/tuple/cons/explicit_construct.cc: Likewise.
1884         * testsuite/23_containers/span/explicit.cc: Likewise.
1885
1886 2023-03-20  Jonathan Wakely  <jwakely@redhat.com>
1887
1888         PR libstdc++/109182
1889         * include/std/expected (expected<void>::expected(in_place_t)):
1890         Remove template-head.
1891
1892 2023-03-18  Jonathan Wakely  <jwakely@redhat.com>
1893
1894         PR libstdc++/109165
1895         * testsuite/18_support/coroutines/hash.cc: Use const object
1896         in second call.
1897
1898 2023-03-17  Jonathan Wakely  <jwakely@redhat.com>
1899
1900         PR libstdc++/109165
1901         * include/std/coroutine (hash<>::operator()): Add const.
1902         * testsuite/18_support/coroutines/hash.cc: New test.
1903
1904 2023-03-14  Patrick Palka  <ppalka@redhat.com>
1905
1906         PR libstdc++/109111
1907         * include/std/ranges (repeat_view): Remove redundant parentheses
1908         in requires-clause.
1909         (repeat_view::_Iterator): Correct the requires-clause.
1910
1911 2023-03-14  Patrick Palka  <ppalka@redhat.com>
1912
1913         * include/bits/stl_iterator.h (move_iterator::_S_iter_concept):
1914         Define.
1915         (__cpp_lib_move_iterator_concept): Define for C++20.
1916         (move_iterator::iterator_concept): Strengthen as per P2520R0.
1917         * include/std/version (__cpp_lib_move_iterator_concept): Define
1918         for C++20.
1919         * testsuite/24_iterators/move_iterator/p2520r0.cc: New test.
1920
1921 2023-03-14  Patrick Palka  <ppalka@redhat.com>
1922
1923         * include/bits/ranges_util.h (view_interface::empty): Add
1924         preferred overloads that use ranges::size when the range is
1925         sized as per LWG 3715.
1926         * testsuite/std/ranges/adaptors/lwg3715.cc: New test.
1927
1928 2023-03-14  Jonathan Wakely  <jwakely@redhat.com>
1929
1930         * include/bits/chrono.h (__is_duration_v, __is_time_point_v):
1931         Only define for C++17 and later.
1932
1933 2023-03-14  Jonathan Wakely  <jwakely@redhat.com>
1934
1935         * src/Makefile.am: Add comment about linker script fragments.
1936         * src/Makefile.in: Regenerate.
1937
1938 2023-03-14  Jonathan Wakely  <jwakely@redhat.com>
1939
1940         PR libstdc++/62196
1941         * include/bits/mask_array.h (mask_array): Add assertions to
1942         assignment operators.
1943         * include/std/valarray (valarray::operator[](valarray<bool>)):
1944         Add assertions.
1945         * testsuite/26_numerics/valarray/mask-1_neg.cc: New test.
1946         * testsuite/26_numerics/valarray/mask-2_neg.cc: New test.
1947         * testsuite/26_numerics/valarray/mask-3_neg.cc: New test.
1948         * testsuite/26_numerics/valarray/mask-4_neg.cc: New test.
1949         * testsuite/26_numerics/valarray/mask-5_neg.cc: New test.
1950         * testsuite/26_numerics/valarray/mask-6_neg.cc: New test.
1951         * testsuite/26_numerics/valarray/mask-7_neg.cc: New test.
1952         * testsuite/26_numerics/valarray/mask-8_neg.cc: New test.
1953         * testsuite/26_numerics/valarray/mask.cc: New test.
1954
1955 2023-03-13  Jakub Jelinek  <jakub@redhat.com>
1956
1957         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
1958         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
1959
1960 2023-03-13  Jonathan Wakely  <jwakely@redhat.com>
1961
1962         * doc/Makefile.am: Add comment referring to documentation.
1963         * doc/Makefile.in: Regenerate.
1964
1965 2023-03-13  Jonathan Wakely  <jwakely@redhat.com>
1966
1967         * doc/html/*: Regenerate.
1968
1969 2023-03-13  Jonny Grant  <jg@jguk.org>
1970
1971         * doc/xml/faq.xml: Update copyright year.
1972
1973 2023-03-13  Jonathan Wakely  <jwakely@redhat.com>
1974
1975         * include/bits/allocator.h: Fix typo in comment.
1976
1977 2023-03-12  Jakub Jelinek  <jakub@redhat.com>
1978
1979         * config/abi/pre/gnu.ver (CXXABI_1.3.14): Also export __bf16 tinfos
1980         if it isn't mangled as DF16b but u6__bf16.
1981
1982 2023-03-12  Gerald Pfeifer  <gerald@pfeifer.com>
1983
1984         * doc/xml/manual/documentation_hacking.xml: Move www.graphviz.org
1985         to https.
1986         * doc/html/manual/documentation_hacking.html: Regenerate.
1987
1988 2023-03-10  Jonathan Wakely  <jwakely@redhat.com>
1989
1990         PR libstdc++/109064
1991         * python/libstdcxx/v6/xmethods.py (SharedPtrUseCountWorker):
1992         Remove self-recursion in __init__. Add missing _supports.
1993         * testsuite/libstdc++-xmethods/shared_ptr.cc: Check use_count()
1994         and unique().
1995
1996 2023-03-09  Patrick Palka  <ppalka@redhat.com>
1997
1998         * include/std/ranges
1999         (cartesian_product_view::_Iterator::_Iterator): Remove
2000         constraint on default constructor as per LWG 3849.
2001         (cartesian_product_view::_Iterator::_M_prev): Adjust position
2002         of _Nm > 0 test as per LWG 3820.
2003         (cartesian_product_view::_Iterator::_M_advance): Perform bounds
2004         checking only on sized cartesian products.
2005         * testsuite/std/ranges/cartesian_product/1.cc (test08): New test.
2006
2007 2023-03-09  Patrick Palka  <ppalka@redhat.com>
2008
2009         PR libstdc++/109024
2010         * include/std/ranges (chunk_by_view::_M_pred): Remove DMI as per
2011         LWG 3796.
2012         (repeat_view::_M_pred): Likewise.
2013         * testsuite/std/ranges/adaptors/chunk_by/1.cc (test03): New test.
2014         * testsuite/std/ranges/repeat/1.cc (test05): New test.
2015
2016 2023-03-09  Patrick Palka  <ppalka@redhat.com>
2017
2018         PR libstdc++/108362
2019         * include/std/ranges (__detail::__can_single_view): New concept.
2020         (_Single::operator()): Constrain it.  Move [[nodiscard]] to the
2021         end of the function declarator.
2022         (__detail::__can_iota_view): New concept.
2023         (_Iota::operator()): Constrain it.  Move [[nodiscard]] to the
2024         end of the function declarator.
2025         (__detail::__can_istream_view): New concept.
2026         (_Istream::operator()): Constrain it.  Move [[nodiscard]] to the
2027         end of the function declarator.
2028         * testsuite/std/ranges/iota/iota_view.cc (test07): New test.
2029         * testsuite/std/ranges/istream_view.cc (test08): New test.
2030         * testsuite/std/ranges/single_view.cc (test07): New test.
2031
2032 2023-03-09  Patrick Palka  <ppalka@redhat.com>
2033
2034         PR libstdc++/107572
2035         * include/std/ranges (cartesian_product_view::end): When
2036         building the tuple of iterators, avoid calling ranges::begin on
2037         the first range if __empty_tail is false.
2038         * testsuite/std/ranges/cartesian_product/1.cc (test07): New test.
2039
2040 2023-03-09  Jonathan Wakely  <jwakely@redhat.com>
2041
2042         PR libstdc++/108882
2043         * config/os/gnu-linux/ldbl-ieee128-extra.ver: Fix incorrect
2044         patterns.
2045
2046 2023-03-07  Jakub Jelinek  <jakub@redhat.com>
2047
2048         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
2049         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
2050         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
2051         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
2052         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
2053
2054 2023-03-07  Jonathan Wakely  <jwakely@redhat.com>
2055
2056         PR libstdc++/108882
2057         * config/abi/pre/gnu.ver (GLIBCXX_3.4.31): Adjust patterns to
2058         not match symbols in namespace std::__gnu_cxx11_ieee128.
2059         * config/os/gnu-linux/ldbl-ieee128-extra.ver: Add patterns for
2060         std::__gnu_cxx11_ieee128::money_{get,put}.
2061
2062 2023-03-07  Jonathan Wakely  <jwakely@redhat.com>
2063
2064         * libsupc++/eh_personality.cc: Fix spelling in comment.
2065
2066 2023-03-03  Alexandre Oliva  <oliva@adacore.com>
2067
2068         * testsuite/30_threads/async/async.cc (test04): Initialize
2069         steady_start, renamed from steady_begin, next to slow_start.
2070         Increase tolerance for final wait.
2071
2072 2023-03-03  Alexandre Oliva  <oliva@adacore.com>
2073
2074         * testsuite/libstdc++-prettyprinters/80276.cc: Add
2075         std::string to debug info.
2076         * testsuite/libstdc++-prettyprinters/libfundts.cc: Likewise.
2077
2078 2023-03-03  Alexandre Oliva  <oliva@adacore.com>
2079
2080         PR libstdc++/104852
2081         PR libstdc++/95989
2082         PR libstdc++/52590
2083         * include/bits/std_thread.h (thread::_M_thread_deps): New
2084         static implicitly-inline member function.
2085         (std::thread template ctor): Pass it to _M_start_thread.
2086         * src/c++11/thread.cc (thread::_M_start_thread): Name depend
2087         parameter, force it live on entry.
2088
2089 2023-03-03  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
2090
2091         * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
2092         * config/abi/post/i386-solaris/amd64/baseline_symbols.txt:
2093         Likewise.
2094         * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
2095         * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
2096         Likewise.
2097
2098 2023-03-01  Jonathan Wakely  <jwakely@redhat.com>
2099
2100         * include/bits/cow_string.h: Fix typo in comment.
2101
2102 2023-03-01  Jonathan Wakely  <jwakely@redhat.com>
2103
2104         * src/c++20/tzdb.cc (chrono::tzdb::current_zone()) Use "UTC" if
2105         current time zone cannot be determined.
2106         * testsuite/std/time/tzdb/1.cc: Remove conditions based on
2107         HAVE_TZDB macro and test all members unconditionally.
2108
2109 2023-02-28  Jonathan Wakely  <jwakely@redhat.com>
2110
2111         PR libstdc++/108952
2112         * include/bits/uses_allocator_args.h
2113         (uses_allocator_construction_args): Implement LWG 3527.
2114         * testsuite/20_util/pair/astuple/get-2.cc: New test.
2115         * testsuite/20_util/scoped_allocator/108952.cc: New test.
2116         * testsuite/20_util/uses_allocator/lwg3527.cc: New test.
2117
2118 2023-02-28  Jonathan Wakely  <jwakely@redhat.com>
2119
2120         PR libstdc++/108846
2121         * include/bits/stl_algobase.h (__copy_move<false, false, RA>)
2122         Add __assign_one static member function.
2123         (__copy_move<true, false, RA>): Likewise.
2124         (__copy_move<IsMove, true, RA>): Do not use memmove for a single
2125         value.
2126         (__copy_move_backward<IsMove, true, RA>): Likewise.
2127         * testsuite/25_algorithms/copy/108846.cc: New test.
2128         * testsuite/25_algorithms/copy_backward/108846.cc: New test.
2129         * testsuite/25_algorithms/copy_n/108846.cc: New test.
2130         * testsuite/25_algorithms/move/108846.cc: New test.
2131         * testsuite/25_algorithms/move_backward/108846.cc: New test.
2132
2133 2023-02-28  Jonathan Wakely  <jwakely@redhat.com>
2134
2135         * src/c++11/codecvt.cc: Add [[likely]] and [[unlikely]]
2136         attributes.
2137
2138 2023-02-27  Jonathan Wakely  <jwakely@redhat.com>
2139
2140         * include/bits/basic_ios.h (basic_ios::_M_setstate): Add
2141         caveat to comment.
2142         * include/bits/basic_string.h (resize_and_overwrite): Add
2143         doxygen comment.
2144
2145 2023-02-24  Matthias Kretz  <m.kretz@gsi.de>
2146
2147         * include/experimental/bits/simd.h: Line breaks and indenting
2148         fixed to follow the libstdc++ standard.
2149         * include/experimental/bits/simd_builtin.h: Likewise.
2150         * include/experimental/bits/simd_fixed_size.h: Likewise.
2151         * include/experimental/bits/simd_neon.h: Likewise.
2152         * include/experimental/bits/simd_ppc.h: Likewise.
2153         * include/experimental/bits/simd_scalar.h: Likewise.
2154         * include/experimental/bits/simd_x86.h: Likewise.
2155
2156 2023-02-24  Matthias Kretz  <m.kretz@gsi.de>
2157
2158         PR libstdc++/108030
2159         * include/experimental/bits/simd_fixed_size.h
2160         (_SimdImplFixedSize::_S_broadcast): Replace inline with
2161         _GLIBCXX_SIMD_INTRINSIC.
2162         (_SimdImplFixedSize::_S_generate): Likewise.
2163         (_SimdImplFixedSize::_S_load): Likewise.
2164         (_SimdImplFixedSize::_S_masked_load): Likewise.
2165         (_SimdImplFixedSize::_S_store): Likewise.
2166         (_SimdImplFixedSize::_S_masked_store): Likewise.
2167         (_SimdImplFixedSize::_S_min): Likewise.
2168         (_SimdImplFixedSize::_S_max): Likewise.
2169         (_SimdImplFixedSize::_S_complement): Likewise.
2170         (_SimdImplFixedSize::_S_unary_minus): Likewise.
2171         (_SimdImplFixedSize::_S_plus): Likewise.
2172         (_SimdImplFixedSize::_S_minus): Likewise.
2173         (_SimdImplFixedSize::_S_multiplies): Likewise.
2174         (_SimdImplFixedSize::_S_divides): Likewise.
2175         (_SimdImplFixedSize::_S_modulus): Likewise.
2176         (_SimdImplFixedSize::_S_bit_and): Likewise.
2177         (_SimdImplFixedSize::_S_bit_or): Likewise.
2178         (_SimdImplFixedSize::_S_bit_xor): Likewise.
2179         (_SimdImplFixedSize::_S_bit_shift_left): Likewise.
2180         (_SimdImplFixedSize::_S_bit_shift_right): Likewise.
2181         (_SimdImplFixedSize::_S_remquo): Add inline keyword (to be
2182         explicit about not always-inline, yet).
2183         (_SimdImplFixedSize::_S_isinf): Likewise.
2184         (_SimdImplFixedSize::_S_isfinite): Likewise.
2185         (_SimdImplFixedSize::_S_isnan): Likewise.
2186         (_SimdImplFixedSize::_S_isnormal): Likewise.
2187         (_SimdImplFixedSize::_S_signbit): Likewise.
2188
2189 2023-02-24  Matthias Kretz  <m.kretz@gsi.de>
2190
2191         PR libstdc++/108856
2192         * include/experimental/bits/simd_builtin.h
2193         (_SimdImplBuiltin::_S_masked_unary): More efficient
2194         implementation of masked inc-/decrement for integers and floats
2195         without AVX2.
2196         * include/experimental/bits/simd_x86.h
2197         (_SimdImplX86::_S_masked_unary): New. Use AVX512 masked subtract
2198         builtins for masked inc-/decrement.
2199
2200 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
2201
2202         * include/experimental/executor (executor): Constrain template
2203         constructors.
2204
2205 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
2206
2207         * include/experimental/internet (basic_endpoint): Add missing
2208         constexpr to comparison operators.
2209         * testsuite/experimental/net/internet/endpoint/cons.cc: New test.
2210
2211 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
2212
2213         * include/experimental/internet (network_v4::netmask()): Avoid
2214         undefined shift.
2215         (network_v4::broadcast()): Optimize and fix for targets with
2216         uint_least32_t wider than 32 bits.
2217         (network_v4::to_string(const Allocator&)): Fix for custom
2218         allocators and optimize using to_chars.
2219         (operator==(const network_v4&, const network_v4&)): Add missing
2220         constexpr.
2221         (operator==(const network_v6&, const network_v6&)): Likewise.
2222         * testsuite/experimental/net/internet/network/v4/cons.cc: New test.
2223         * testsuite/experimental/net/internet/network/v4/members.cc: New test.
2224
2225 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
2226
2227         * include/experimental/internet (address_4(const bytes_type&)):
2228         Use __builtin_bit_cast if available, otherwise convert to
2229         network byte order.
2230         (address_v4::to_bytes()): Likewise, but convert from network
2231         byte order.
2232         * testsuite/experimental/net/internet/address/v4/cons.cc: Fix
2233         incorrect tests. Check for constexpr too.
2234         * testsuite/experimental/net/internet/address/v4/creation.cc:
2235         Likewise.
2236         * testsuite/experimental/net/internet/address/v4/members.cc:
2237         Check that bytes_type is a standard-layout type.
2238
2239 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
2240
2241         * include/experimental/internet (address_v4::to_string):
2242         Optimize.
2243         * testsuite/experimental/net/internet/address/v4/members.cc:
2244         Check more addresses.
2245
2246 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
2247
2248         * include/ext/aligned_buffer.h (__aligned_buffer): Add
2249         diagnostic pragmas.
2250
2251 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
2252
2253         * testsuite/std/format/arguments/lwg3810.cc: Move dg-options
2254         before dg-do.
2255
2256 2023-02-23  Matthias Kretz  <m.kretz@gsi.de>
2257
2258         * testsuite/experimental/simd/tests/reductions.cc: Introduce
2259         max_distance as the type-dependent max error.
2260
2261 2023-02-23  Matthias Kretz  <m.kretz@gsi.de>
2262
2263         * include/experimental/bits/simd_builtin.h (_S_set): Compare as
2264         int. The actual range of these indexes is very small.
2265
2266 2023-02-23  Matthias Kretz  <m.kretz@gsi.de>
2267
2268         * include/experimental/bits/simd_x86.h (_S_bit_shift_left)
2269         (_S_bit_shift_right): Declare constexpr. The implementation was
2270         already expecting constexpr evaluation.
2271
2272 2023-02-23  Matthias Kretz  <m.kretz@gsi.de>
2273
2274         PR libstdc++/108030
2275         * include/experimental/bits/simd_detail.h
2276         (_GLIBCXX_SIMD_ALWAYS_INLINE_LAMBDA): Define as empty for
2277         __clang__.
2278
2279 2023-02-23  Matthias Kretz  <m.kretz@gsi.de>
2280
2281         PR libstdc++/108030
2282         * include/experimental/bits/simd.h (__vector_broadcast):
2283         Implement via __vector_broadcast_impl instead of
2284         __call_with_n_evaluations + 2 lambdas.
2285         (__vector_broadcast_impl): New.
2286
2287 2023-02-22  Alexandre Oliva  <oliva@adacore.com>
2288
2289         * src/c++11/shared_ptr.cc (__gnu_internal::get_mutex):
2290         Avoid destruction of the mutex pool.
2291
2292 2023-02-22  Alexandre Oliva  <oliva@adacore.com>
2293
2294         * testsuite/27_io/basic_ofstream/open/char/noreplace.cc: xfail
2295         on vxworks.
2296         * testsuite/27_io/basic_ofstream/open/wchar_t/noreplace.cc:
2297         Likewise.
2298
2299 2023-02-22  Alexandre Oliva  <oliva@adacore.com>
2300
2301         * testsuite/17_intro/names.cc: Undef func on vxworks >= 7 in
2302         kernel mode.
2303
2304 2023-02-20  Andreas Schwab  <schwab@linux-m68k.org>
2305
2306         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
2307
2308 2023-02-20  Matthias Kretz  <m.kretz@gsi.de>
2309
2310         * include/experimental/bits/simd.h (__extract_part, split):
2311         Use reserved name for template parameter.
2312
2313 2023-02-20  Andreas Schwab  <schwab@suse.de>
2314
2315         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
2316
2317 2023-02-18  Gerald Pfeifer  <gerald@pfeifer.com>
2318
2319         * doc/xml/faq.xml: Switch two links to www.open-std.org to https.
2320         * doc/html/faq.html: Regenerate.
2321
2322 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
2323
2324         * include/experimental/bits/simd_math.h (__hypot): Bitcasting
2325         between scalars requires the __bit_cast helper function instead
2326         of simd_bit_cast.
2327
2328 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
2329
2330         * include/experimental/bits/simd_x86.h
2331         (_SimdImplX86::_S_not_equal_to, _SimdImplX86::_S_less)
2332         (_SimdImplX86::_S_less_equal): Do not call
2333         __builtin_is_constant_evaluated in constexpr-if.
2334
2335 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
2336
2337         * testsuite/experimental/simd/tests/bits/verify.h
2338         (verify::verify): Use %zx for size_t in format string.
2339
2340 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
2341
2342         * testsuite/experimental/simd/generate_makefile.sh: Generate and
2343         pre-compile pch.h, which includes all headers that do not depend
2344         on command-line macros.
2345         * testsuite/experimental/simd/tests/bits/main.h: New file.
2346         (iterate_abis, main): Moved from verify.h.
2347         * testsuite/experimental/simd/tests/bits/verify.h
2348         (iterate_abis, main): Moved to main.h.
2349         * testsuite/experimental/simd/tests/bits/conversions.h: Add
2350         include guard.
2351         (genHalfBits): Simplify.
2352         * testsuite/experimental/simd/tests/bits/make_vec.h: Add include
2353         guard.
2354         (make_alternating_mask): Moved from mask_loadstore.
2355         * testsuite/experimental/simd/tests/bits/mathreference.h: Add
2356         include guard.
2357         * testsuite/experimental/simd/tests/bits/test_values.h: Ditto.
2358         * testsuite/experimental/simd/tests/mask_loadstore.cc
2359         (make_mask, make_alternating_mask): Removed.
2360         * testsuite/experimental/simd/tests/mask_reductions.cc: Ditto.
2361         * testsuite/experimental/simd/tests/operators.cc (genHalfBits):
2362         Removed.
2363         * testsuite/experimental/simd/tests/abs.cc: Only include
2364         bits/main.h.
2365         Ditto.
2366         * testsuite/experimental/simd/tests/algorithms.cc: Ditto.
2367         * testsuite/experimental/simd/tests/broadcast.cc: Ditto.
2368         * testsuite/experimental/simd/tests/casts.cc: Ditto.
2369         * testsuite/experimental/simd/tests/fpclassify.cc: Ditto.
2370         * testsuite/experimental/simd/tests/frexp.cc: Ditto.
2371         * testsuite/experimental/simd/tests/generator.cc: Ditto.
2372         * testsuite/experimental/simd/tests/hypot3_fma.cc: Ditto.
2373         * testsuite/experimental/simd/tests/integer_operators.cc: Ditto.
2374         * testsuite/experimental/simd/tests/ldexp_scalbn_scalbln_modf.cc:
2375         * testsuite/experimental/simd/tests/loadstore.cc: Ditto.
2376         * testsuite/experimental/simd/tests/logarithm.cc: Ditto.
2377         * testsuite/experimental/simd/tests/mask_broadcast.cc: Ditto.
2378         * testsuite/experimental/simd/tests/mask_conversions.cc: Ditto.
2379         * testsuite/experimental/simd/tests/mask_implicit_cvt.cc: Ditto.
2380         * testsuite/experimental/simd/tests/mask_operator_cvt.cc: Ditto.
2381         * testsuite/experimental/simd/tests/mask_operators.cc: Ditto.
2382         * testsuite/experimental/simd/tests/math_1arg.cc: Ditto.
2383         * testsuite/experimental/simd/tests/math_2arg.cc: Ditto.
2384         * testsuite/experimental/simd/tests/operator_cvt.cc: Ditto.
2385         * testsuite/experimental/simd/tests/reductions.cc: Ditto.
2386         * testsuite/experimental/simd/tests/remqo.cc: Ditto.
2387         * testsuite/experimental/simd/tests/simd.cc: Ditto.
2388         * testsuite/experimental/simd/tests/sincos.cc: Ditto.
2389         * testsuite/experimental/simd/tests/split_concat.cc: Ditto.
2390         * testsuite/experimental/simd/tests/splits.cc: Ditto.
2391         * testsuite/experimental/simd/tests/trigonometric.cc: Ditto.
2392         * testsuite/experimental/simd/tests/trunc_ceil_floor.cc: Ditto.
2393         * testsuite/experimental/simd/tests/where.cc: Ditto.
2394
2395 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
2396
2397         * testsuite/experimental/simd/README.md: Document the timeout
2398         and timeout-factor directives. Minor typo fixed.
2399
2400 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
2401
2402         PR libstdc++/108030
2403         * include/experimental/bits/simd_detail.h: Define
2404         _GLIBCXX_SIMD_ALWAYS_INLINE_LAMBDA.
2405         * include/experimental/bits/simd.h: Annotate lambdas with
2406         _GLIBCXX_SIMD_ALWAYS_INLINE_LAMBDA.
2407         * include/experimental/bits/simd_builtin.h: Ditto.
2408         * include/experimental/bits/simd_converter.h: Ditto.
2409         * include/experimental/bits/simd_fixed_size.h: Ditto.
2410         * include/experimental/bits/simd_math.h: Ditto.
2411         * include/experimental/bits/simd_neon.h: Ditto.
2412         * include/experimental/bits/simd_x86.h: Ditto.
2413
2414 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
2415
2416         * include/experimental/bits/simd.h
2417         (_SimdWrapper::_M_is_constprop_none_of)
2418         (_SimdWrapper::_M_is_constprop_all_of): Return false unless the
2419         computed result still satisfies __builtin_constant_p.
2420
2421 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
2422
2423         * testsuite/std/format/arguments/lwg3810.cc: Replace UTF-8
2424         ellipsis character.
2425
2426 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
2427
2428         * include/Makefile.am: Add new header.
2429         * include/Makefile.in: Regenerate.
2430         * include/experimental/synchronized_value: New file.
2431         * testsuite/experimental/synchronized_value.cc: New test.
2432
2433 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
2434
2435         * include/experimental/optional: Fix header name in comment.
2436
2437 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
2438
2439         * include/std/format (__format::_Arg_store): New class template.
2440         (basic_format_args): Remove nested type _Store and add deduction
2441         guide from _Arg_store.
2442         (basic_format_arg, make_format_args): Adjust.
2443         * testsuite/std/format/arguments/lwg3810.cc: New test.
2444
2445 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
2446
2447         * include/bits/stl_pair.h (pair) [C++20]: Add non-dangling
2448         constraints to constructors and add deleted overloads for the
2449         dangling cases, as per P2255R2.
2450         (pair) [!C++20 && _GLIBCXX_DEBUG]: Add static assertions to
2451         make dangling cases ill-formed.
2452         * testsuite/20_util/pair/dangling_ref.cc: New test.
2453
2454 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
2455
2456         * testsuite/17_intro/names_pstl.cc: Require et tbb_backend.
2457
2458 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
2459
2460         * include/ext/throw_allocator.h: Use reserved names for
2461         parameters.
2462
2463 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
2464
2465         * testsuite/17_intro/names_pstl.cc: Add space after effective
2466         target name.
2467
2468 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
2469
2470         * include/pstl/algorithm_fwd.h (__pattern_search_n)
2471         (__brick_unique_copy, __brick_adjacent_find)
2472         (__brick_generate_n, __pattern_generate_n): Use reserved names
2473         for parameters.
2474         * include/pstl/algorithm_impl.h (__brick_unique_copy)
2475         (__pattern_reverse, __brick_generate_n): Likewise.
2476         * include/pstl/execution_impl.h (__prefer_unsequenced_tag)
2477         (__prefer_parallel_tag): Likewise.
2478         * include/pstl/glue_algorithm_impl.h (transform): Likewise.
2479         * include/pstl/glue_numeric_defs.h (adjacent_difference):
2480         Likewise.
2481         * include/pstl/numeric_impl.h (__brick_adjacent_difference):
2482         Likewise.
2483         * include/pstl/parallel_backend_tbb.h (__merge_func): Likewise.
2484         * include/pstl/unseq_backend_simd.h (_Combiner)
2485         (__simd_min_element, __simd_minmax_element): Likewise.
2486         * testsuite/17_intro/names_pstl.cc: New test.
2487
2488 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
2489
2490         * include/bits/fs_ops.h (create_directory): Use reserved name
2491         for parameter.
2492         * include/bits/ranges_algo.h (__contains_subrange_fn):
2493         Likewise.
2494         * include/bits/regex_automaton.h (_State_base::_M_print):
2495         Likewise.
2496         * include/bits/regex_automaton.tcc(_State_base::_M_print):
2497         Likewise.
2498         * include/bits/regex_scanner.tcc(_Scanner::_M_print): Likewise.
2499         * include/experimental/bits/fs_ops.h (create_directory):
2500         Likewise.
2501         * include/std/mutex (timed_mutex::_M_clocklock): Likewise.
2502         (recursive_timed_mutex:_M_clocklock): Likewise.
2503         * include/std/tuple (basic_common_reference): Likewise.
2504         * libsupc++/cxxabi_init_exception.h
2505         (__cxa_init_primary_exception): Likewise.
2506         * testsuite/17_intro/names.cc: Add checks.
2507
2508 2023-02-14  Gerald Pfeifer  <gerald@pfeifer.com>
2509
2510         * doc/xml/manual/status_cxx2017.xml: Update an open-std.org link
2511         to www.open-std.org and https.
2512         * doc/html/manual/status.html: Regenerate.
2513
2514 2023-02-14  Thomas W Rodgers  <rodgert@twrodgers.com>
2515
2516         PR libstdc++/103934
2517         * include/std/atomic (atomic_flag_wait): Add.
2518         (atomic_flag_wait_explicit): Add.
2519         (atomic_flag_notify): Add.
2520         (atomic_flag_notify_explicit): Add.
2521         * testsuite/29_atomics/atomic_flag/wait_notify/1.cc:
2522         Add test case to cover missing atomic_flag free functions.
2523
2524 2023-02-14  Thomas W Rodgers  <rodgert@twrodgers.com>
2525
2526         PR libstdc++/103934
2527         * include/std/atomic (atomic_flag_test): Add.
2528         (atomic_flag_test_explicit): Add.
2529         * testsuite/29_atomics/atomic_flag/test/explicit.cc: Add
2530         test case to cover missing atomic_flag free functions.
2531         * testsuite/29_atomics/atomic_flag/test/implicit.cc:
2532         Likewise.
2533
2534 2023-02-13  Gerald Pfeifer  <gerald@pfeifer.com>
2535
2536         * doc/xml/manual/policy_data_structures_biblio.xml: Adjust
2537         "The Component Object Model" reference.
2538         * doc/html/manual/policy_data_structures.html: Regenerate.
2539
2540 2023-02-12  Gerald Pfeifer  <gerald@pfeifer.com>
2541
2542         * doc/xml/manual/containers.xml: Tweak a link to N1780
2543         (C++ standard).
2544         * doc/html/manual/associative.html: Regenerate.
2545
2546 2023-02-12  Gerald Pfeifer  <gerald@pfeifer.com>
2547
2548         * doc/xml/manual/ctype.xml: Change www.unix.org to unix.org.
2549         * doc/html/manual/facets.html: Regenerate.
2550
2551 2023-02-11  Gerald Pfeifer  <gerald@pfeifer.com>
2552
2553         * doc/xml/manual/policy_data_structures_biblio.xml: Update
2554         link to "Worst-case efficient priority queues".
2555         * doc/html/manual/policy_data_structures.html: Regenerate.
2556
2557 2023-02-06  Arsen Arsenović  <arsen@aarsen.me>
2558
2559         * doc/xml/manual/using.xml: Document newly-freestanding
2560         headers and the effect of the -ffreestanding flag.
2561         * doc/xml/manual/status_cxx2023.xml: Document P1642R11 as
2562         completed.
2563         * doc/xml/manual/configure.xml: Document that hosted installs
2564         respect __STDC_HOSTED__.
2565         * doc/xml/manual/test.xml: Document how to run tests in
2566         freestanding mode.
2567         * doc/html/*: Regenerate.
2568
2569 2023-02-06  Jonathan Wakely  <jwakely@redhat.com>
2570
2571         * include/bits/ranges_algo.h (__find_last_fn): Rename T to _Tp.
2572         (__find_last_if_fn): Likewise.
2573
2574 2023-02-06  Jonathan Wakely  <jwakely@redhat.com>
2575
2576         * include/std/type_traits: Add diagnostic pragmas around
2577         references to deprecated std::aligned_storage and
2578         std::aligned_union traits.
2579         * testsuite/20_util/aligned_storage/requirements/alias_decl.cc:
2580         Add dg-warning for et c++23.
2581         * testsuite/20_util/aligned_storage/requirements/explicit_instantiation.cc:
2582         Likewise.
2583         * testsuite/20_util/aligned_storage/value.cc: Likewise.
2584         * testsuite/20_util/aligned_union/1.cc: Likewise.
2585         * testsuite/20_util/aligned_union/requirements/alias_decl.cc:
2586         Likewise.
2587
2588 2023-02-06  Nathaniel Shead  <nathanieloshead@gmail.com>
2589
2590         * doc/doxygen/user.cfg.in (PREDEFINED): Add new macros.
2591         * include/bits/c++config (_GLIBCXX23_DEPRECATED)
2592         (_GLIBCXX23_DEPRECATED_SUGGEST): New macros.
2593         * include/std/type_traits (aligned_storage, aligned_union)
2594         (aligned_storage_t, aligned_union_t): Deprecate for C++23.
2595         * testsuite/20_util/aligned_storage/deprecated-2b.cc: New test.
2596         * testsuite/20_util/aligned_union/deprecated-2b.cc: New test.
2597
2598 2023-02-06  Nathaniel Shead  <nathanieloshead@gmail.com>
2599
2600         * doc/doxygen/user.cfg.in (PREDEFINED): Update macros.
2601         * include/bits/c++config (_GLIBCXX20_DEPRECATED): Make
2602         consistent with other 'deprecated' macros.
2603         * include/std/type_traits (is_pod, is_pod_v): Use
2604         _GLIBCXX20_DEPRECATED_SUGGEST instead.
2605
2606 2023-02-06  Arsen Arsenović  <arsen@aarsen.me>
2607
2608         * Makefile.am [!_GLIBCXX_HOSTED]: Enable src/ subdirectory.
2609         * Makefile.in: Regenerate.
2610         * src/Makefile.am [!_GLIBCXX_HOSTED]: Omit compatibility files.
2611         There's no history to be compatible with.
2612         * src/c++11/Makefile.am [!_GLIBCXX_HOSTED]: Omit hosted-only
2613         source files from the build.
2614         * src/c++17/Makefile.am [!_GLIBCXX_HOSTED]: Likewise.
2615         * src/c++20/Makefile.am [!_GLIBCXX_HOSTED]: Likewise.
2616         * src/c++98/Makefile.am [!_GLIBCXX_HOSTED]: Likewise.
2617         * src/Makefile.in: Regenerate.
2618         * src/c++11/Makefile.in: Regenerate.
2619         * src/c++17/Makefile.in: Regenerate.
2620         * src/c++20/Makefile.in: Regenerate.
2621         * src/c++98/Makefile.in: Regenerate.
2622
2623 2023-02-06  Jonathan Wakely  <jwakely@redhat.com>
2624
2625         * src/Makefile.am [GLIBCXX_HOSTED] (SUBDIRS): Do not add
2626         filesystem, libbacktrace and experimental.
2627         * src/Makefile.in: Regenerate.
2628
2629 2023-02-04  Hans-Peter Nilsson  <hp@axis.com>
2630
2631         PR libstdc++/108672
2632         * include/pstl/unseq_backend_simd.h (__simd_or): Use __INT32_TYPE__
2633         instead of int32_t.
2634
2635 2023-02-04  Gerald Pfeifer  <gerald@pfeifer.com>
2636
2637         * doc/xml/manual/documentation_hacking.xml: Adjust link to pdftex.
2638         * doc/html/manual/documentation_hacking.html: Regenerate.
2639
2640 2023-02-04  François Dumont  <fdumont@gcc.gnu.org>
2641
2642         * include/bits/basic_string.h (operator=(basic_string&&)): Transfer move-to
2643         storage to the move-from instance when allocators are equal.
2644         * testsuite/21_strings/basic_string/allocator/char/move_assign.cc (test04):
2645         New test case.
2646
2647 2023-02-03  Samuel Thibault  <samuel.thibault@gnu.org>
2648
2649         * config/os/gnu-linux/os_defines.h [!__linux__]
2650         (_GLIBCXX_NATIVE_THREAD_ID, _GLIBCXX_GTHREAD_USE_WEAK): Do not define.
2651
2652 2023-02-03  Patrick Palka  <ppalka@redhat.com>
2653
2654         * include/bits/ranges_algo.h (__find_last_fn, find_last):
2655         Define.
2656         (__find_last_if_fn, find_last_if): Define.
2657         (__find_last_if_not_fn, find_last_if_not): Define.
2658         * testsuite/25_algorithms/find_last/1.cc: New test.
2659         * testsuite/25_algorithms/find_last_if/1.cc: New test.
2660         * testsuite/25_algorithms/find_last_if_not/1.cc: New test.
2661
2662 2023-02-03  Patrick Palka  <ppalka@redhat.com>
2663
2664         * include/bits/ranges_algo.h (out_value_result): Define.
2665         (iota_result): Define.
2666         (__iota_fn, iota): Define.
2667         * testsuite/25_algorithms/iota/1.cc: New test.
2668
2669 2023-02-03  Patrick Palka  <ppalka@redhat.com>
2670
2671         * include/bits/ranges_algo.h (__contains_fn, contains): Define.
2672         (__contains_subrange_fn, contains_subrange): Define.
2673         * testsuite/25_algorithms/contains/1.cc: New test.
2674         * testsuite/25_algorithms/contains_subrange/1.cc: New test.
2675
2676 2023-02-02  Gerald Pfeifer  <gerald@pfeifer.com>
2677
2678         * doc/xml/manual/abi.xml: Tweak link to ABIcheck project.
2679         * doc/html/manual/abi.html: Regenerate.
2680
2681 2023-02-02  Jonathan Wakely  <jwakely@redhat.com>
2682
2683         * src/filesystem/ops-common.h [AVR] (__unsupported): Always use
2684         errc::function_not_supported instead of errc::not_supported.
2685
2686 2023-02-02  Jonathan Wakely  <jwakely@redhat.com>
2687
2688         * include/std/sstream  (basic_stringbuf::view): Define for old
2689         std::string ABI.
2690         (basic_istringstream::view, basic_0stringstream::view)
2691         (basic_stringstream::view): Likewise.
2692         * testsuite/27_io/basic_istringstream/view/char/1.cc: Remove
2693         { dg-require-effective-target cxx11_abi }.
2694         * testsuite/27_io/basic_istringstream/view/wchar_t/1.cc:
2695         Likewise.
2696         * testsuite/27_io/basic_ostringstream/view/char/1.cc: Likewise.
2697         * testsuite/27_io/basic_ostringstream/view/wchar_t/1.cc:
2698         Likewise.
2699         * testsuite/27_io/basic_stringbuf/view/char/1.cc: Likewise.
2700         * testsuite/27_io/basic_stringbuf/view/wchar_t/1.cc: Likewise.
2701         * testsuite/27_io/basic_stringstream/view/char/1.cc: Likewise.
2702         * testsuite/27_io/basic_stringstream/view/wchar_t/1.cc:
2703         Likewise.
2704
2705 2023-02-02  Jonathan Wakely  <jwakely@redhat.com>
2706
2707         PR libstdc++/108636
2708         * config/abi/pre/gnu.ver (GLIBCXX_3.4.31): Export shared_ptr
2709         conversion operators for directory iterator comparisons with
2710         std::default_sentinel_t.
2711         * include/bits/fs_path.h (path::path(string_view, _Type))
2712         (path::_Cmpt::_Cmpt(string_view, _Type, size_t)): Move inline
2713         definitions to ...
2714         * src/c++17/fs_path.cc: ... here.
2715         * testsuite/27_io/filesystem/path/108636.cc: New test.
2716
2717 2023-02-02  Jonathan Wakely  <jwakely@redhat.com>
2718
2719         * include/std/variant (variant::operator=): Implement resolution
2720         of LWG 3585.
2721         * testsuite/20_util/variant/lwg3585.cc: New test.
2722
2723 2023-02-02  Gerald Pfeifer  <gerald@pfeifer.com>
2724
2725         * doc/xml/manual/using_exceptions.xml: Update a www.open-std.org
2726         link to https.
2727         * doc/html/manual/using_exceptions.html: Regenerate.
2728
2729 2023-02-02  Gerald Pfeifer  <gerald@pfeifer.com>
2730
2731         * doc/xml/manual/debug.xml: Fix link to online GDB manual.
2732         * doc/html/manual/debug.html: Regenerate.
2733
2734 2023-02-01  Jonathan Wakely  <jwakely@redhat.com>
2735
2736         * src/c++11/random.cc (random_device::_M_fini): Do not try to
2737         close the file handle if the target doesn't support the
2738         /dev/random and /dev/urandom files.
2739
2740 2023-02-01  Jonathan Wakely  <jwakely@redhat.com>
2741
2742         * config/os/generic/error_constants.h (errc::value_too_large)
2743         [__AVR__]: Define.
2744         * src/c++11/system_error.cc
2745         (system_category::default_error_condition) [__AVR__]: Only match
2746         recognize values equal to EDOM, ERANGE, ENOSYS and EINTR.
2747         * src/c++17/fs_ops.cc (fs::current_path) [__AVR__]: Do not check
2748         for ENOENT etc. in switch.
2749         (fs::remove_all) [__AVR__]: Likewise.
2750         * src/filesystem/ops-common.h [__AVR__]: Do not use POSIX open,
2751         close etc.
2752
2753 2023-02-01  Jonathan Wakely  <jwakely@redhat.com>
2754
2755         * acinclude.m4 (GLIBCXX_ZONEINFO_DIR) [avr-*-*, msp430-*-*]: Set
2756         embed_zoneinfo=no
2757         * configure: Regenerate.
2758
2759 2023-02-01  Hans-Peter Nilsson  <hp@axis.com>
2760
2761         PR testsuite/108632
2762         * testsuite/std/time/hh_mm_ss/1.cc (size): Add empty
2763         struct at end of S0.
2764
2765 2023-01-30  Gerald Pfeifer  <gerald@pfeifer.com>
2766
2767         * doc/xml/manual/shared_ptr.xml: Move links from both
2768         http://open-std.org and http://www.open-std.org to
2769         https://www.open-std.org.
2770         * doc/html/manual/memory.html: Regenerate.
2771
2772 2023-01-28  Gerald Pfeifer  <gerald@pfeifer.com>
2773
2774         * doc/xml/manual/appendix_contributing.xml: Adjust link to
2775         ISO C++ standard at ANSI.
2776         Move link to www.open-std.org to https.
2777         * doc/html/manual/appendix_contributing.html: Regenerate.
2778
2779 2023-01-28  Gerald Pfeifer  <gerald@pfeifer.com>
2780
2781         * doc/xml/manual/documentation_hacking.xml: Move sourceforge.net
2782         links to https.
2783         * doc/html/manual/documentation_hacking.html: Regenerate.
2784
2785 2023-01-28  Gerald Pfeifer  <gerald@pfeifer.com>
2786
2787         * doc/xml/manual/abi.xml: Update www.open-std.org link to https.
2788         * doc/html/manual/abi.html: Regenerate.
2789
2790 2023-01-27  Jakub Jelinek  <jakub@redhat.com>
2791
2792         PR libstdc++/108568
2793         * testsuite/17_intro/names.cc (__unused): For linux or GNU hurd
2794         include features.h if present and then check __GLIBC__ and
2795         __GLIBC_MINOR__ macros for glibc prior to 2.19, instead of testing
2796         __GLIBC_PREREQ which isn't defined yet.
2797
2798 2023-01-27  Jonathan Wakely  <jwakely@redhat.com>
2799
2800         * src/c++20/tzdb.cc (tzdata_stream): Use constant instead of
2801         string literal.
2802
2803 2023-01-27  Jonathan Wakely  <jwakely@redhat.com>
2804
2805         PR libstdc++/108554
2806         * testsuite/23_containers/map/modifiers/108554.cc: Use dg-bogus.
2807
2808 2023-01-26  Jonathan Wakely  <jwakely@redhat.com>
2809
2810         * src/c++20/tzdb.cc (operator>>(istream&, ZoneInfo&)): Allow
2811         rules named "+" for compatibility with older tzdata.zi files.
2812
2813 2023-01-26  Jonathan Wakely  <jwakely@redhat.com>
2814
2815         PR libstdc++/108554
2816         * include/bits/stl_tree.h (_Rb_tree_insert_and_rebalance): Add
2817         nonnull attribute.
2818         (_Rb_tree_rebalance_for_erase): Add nonnull and returns_nonnull
2819         attributes.
2820         * testsuite/23_containers/map/modifiers/108554.cc: New test.
2821
2822 2023-01-26  Jonathan Wakely  <jwakely@redhat.com>
2823
2824         PR libstdc++/108530
2825         * src/c++20/tzdb.cc (current_zone): Look for TIMEZONE or ZONE in
2826         /etc/sysconfig/clock, not DEFAULT_TIMEZONE.
2827
2828 2023-01-26  Gerald Pfeifer  <gerald@pfeifer.com>
2829
2830         * doc/xml/manual/intro.xml: Update links to www.open-std.org to
2831         use https.
2832         * doc/html/manual/bugs.html: Regenerate.
2833
2834 2023-01-24  Jonathan Wakely  <jwakely@redhat.com>
2835
2836         PR libstdc++/108530
2837         * src/c++20/tzdb.cc (current_zone): Look for DEFAULT_TIMEZONE in
2838         /etc/sysconfig/clock.
2839
2840 2023-01-24  Jonathan Wakely  <jwakely@redhat.com>
2841
2842         PR libstdc++/102301
2843         * include/bits/ranges_base.h: Include <bits/stl_iterator.h> for
2844         std::make_reverse_iterator.
2845         * include/std/tuple: Include <bits/ranges_util.h> for subrange.
2846         (make_from_tuple): Add static assertion from P2255 to diagnose
2847         dangling references.
2848         * testsuite/20_util/tuple/make_from_tuple/dangling_ref.cc: New test.
2849         * testsuite/20_util/tuple/make_from_tuple/tuple_like.cc: New test.
2850
2851 2023-01-23  François Dumont  <fdumont@gcc.gnu.org>
2852
2853         * include/debug/safe_iterator.h (_Safe_iterator<>::_Unchecked): New.
2854         (_Safe_iterator(const _Safe_iterator&, _Unchecked)): New.
2855         (_Safe_iterator::operator++(int)): Use latter.
2856         (_Safe_iterator::operator--(int)): Likewise.
2857         (_Safe_iterator(_Iterator, const _Safe_sequence_base*)): Remove !_M_insular()
2858         check.
2859         * include/debug/safe_local_iterator.h (_Safe_local_iterator<>::_Unchecked):
2860         New.
2861         (_Safe_local_iterator(const _Safe_local_iterator&, _Unchecked)): New.
2862         (_Safe_local_iterator::operator++(int)): Use latter.
2863         * src/c++11/debug.cc (_S_debug_messages): Add as comment the _Debug_msg_id
2864         entry associated to the array entry.
2865
2866 2023-01-18  Jonathan Wakely  <jwakely@redhat.com>
2867
2868         * include/bits/fs_path.h (u8path): Add deprecated attribute.
2869         * testsuite/27_io/filesystem/path/construct/90281.cc: Add
2870         -Wno-deprecated-declarations for C++20 and later.
2871         * testsuite/27_io/filesystem/path/factory/u8path-char8_t.cc:
2872         Likewise.
2873         * testsuite/27_io/filesystem/path/factory/u8path.cc: Likewise.
2874         * testsuite/27_io/filesystem/path/native/string.cc: Likewise.
2875         * testsuite/27_io/filesystem/path/factory/u8path-depr.cc: New test.
2876
2877 2023-01-18  Jonathan Wakely  <jwakely@redhat.com>
2878
2879         * include/bits/random.h (random_device) [!_GLIBCXX_USE_DEV_RANDOM]:
2880         Always call _M_fini and _M_getentropy.
2881
2882 2023-01-18  Gerald Pfeifer  <gerald@pfeifer.com>
2883
2884         * doc/xml/manual/policy_data_structures_biblio.xml: Adjust links
2885         to www.open-std.org to use https.
2886         (COM: Component Model Object Technologies): Rename from...
2887         (The Component Object Model): ...to.
2888         * doc/html/manual/policy_data_structures.html: Regenerate.
2889
2890 2023-01-18  Dimitrij Mijoski  <dmjpp@hotmail.com>
2891
2892         * testsuite/22_locale/codecvt/codecvt_unicode.cc: Simplify.
2893         * testsuite/22_locale/codecvt/codecvt_unicode.h: Simplify.
2894         * testsuite/22_locale/codecvt/codecvt_unicode_wchar_t.cc: Simplify.
2895
2896 2023-01-17  Jonathan Wakely  <jwakely@redhat.com>
2897
2898         * acinclude.m4 (GLIBCXX_ZONEINFO_DIR): Check $target_os instead
2899         of $host. Fix check for file being present during native build.
2900         * configure: Regenerate.
2901
2902 2023-01-17  Martin Liska  <mliska@suse.cz>
2903
2904         * src/libbacktrace/Makefile.in: Regenerate.
2905
2906 2023-01-16  Jonathan Wakely  <jwakely@redhat.com>
2907
2908         * src/c++20/tzdb.cc (_GLIBCXX_USE_CXX11_ABI): Define to 1.
2909
2910 2023-01-16  Jonathan Wakely  <jwakely@redhat.com>
2911
2912         PR libstdc++/108413
2913         * include/c_compatibility/stdatomic.h: Change copyright line to
2914         be consistent with other headers contributed under DCO terms.
2915         * include/std/expected: Add full stop to copyright line.
2916         * src/c++20/tzdb.cc: Likewise.
2917
2918 2023-01-15  Gerald Pfeifer  <gerald@pfeifer.com>
2919
2920         * doc/xml/manual/status_cxx2014.xml: Switch www.open-std.org to
2921         https.
2922         * doc/xml/manual/status_cxx2017.xml: Ditto.
2923         * doc/xml/manual/status_cxx2020.xml: Ditto.
2924         * doc/xml/manual/status_cxx2023.xml: Ditto.
2925         * doc/html/manual/status.html: Regenerate.
2926
2927 2023-01-15  Jonathan Wakely  <jwakely@redhat.com>
2928
2929         * testsuite/std/time/tzdb_list/1.cc: Remove dg-xfail-run-if
2930         and fail gracefully if defining the weak symbol doesn't work.
2931
2932 2023-01-15  François Dumont  <fdumont@gcc.gnu.org>
2933
2934         PR libstdc++/108288
2935         * include/debug/safe_iterator.h (_Safe_iterator<>::operator++(int)): Extend deadlock
2936         fix to other iterator category.
2937         (_Safe_iterator<>::operator--(int)): Likewise.
2938         * include/debug/safe_local_iterator.h (_Safe_local_iterator<>::operator++(int)):
2939         Fix deadlock.
2940         * testsuite/util/debug/unordered_checks.h (invalid_local_iterator_pre_increment): New.
2941         (invalid_local_iterator_post_increment): New.
2942         * testsuite/23_containers/unordered_map/debug/invalid_local_iterator_post_increment_neg.cc:
2943         New test.
2944         * testsuite/23_containers/unordered_map/debug/invalid_local_iterator_pre_increment_neg.cc:
2945         New test.
2946
2947 2023-01-15  Jonathan Wakely  <jwakely@redhat.com>
2948
2949         * testsuite/30_threads/jthread/jthread.cc: Remove -pthread from
2950         dg-options.
2951
2952 2023-01-15  Jonathan Wakely  <jwakely@redhat.com>
2953
2954         * testsuite/std/time/clock/utc/io.cc: Use ctype to widen char.
2955
2956 2023-01-14  Björn Schäpers  <bjoern@hazardy.de>
2957
2958         * acinclude.m4 (GLIBCXX_ENABLE_BACKTRACE): Add check for
2959         windows.h. Add pecoff as FORMAT_FILE.
2960         * config.h.in: Regenerate.
2961         * configure: Regenerate.
2962         * src/libbacktrace/Makefile.am: Regenerate.
2963         * src/libbacktrace/Makefile.in: Add pecoff.c as FORMAT_FILE.
2964
2965 2023-01-14  Björn Schäpers  <bjoern@hazardy.de>
2966
2967         * include/std/stacktrace (stacktrace_entry::_S_demangle): Use
2968         raw __name if __cxa_demangle could not demangle it.
2969
2970 2023-01-14  Jonathan Wakely  <jwakely@redhat.com>
2971
2972         PR libstdc++/108409
2973         * src/c++20/tzdb.cc (current_zone()) [_AIX]: Use TZ environment
2974         variable.
2975
2976 2023-01-14  Jonathan Wakely  <jwakely@redhat.com>
2977
2978         * src/c++20/tzdb.cc (TZDB_DISABLED): Disable all code for
2979         loading tzdb.
2980         * testsuite/std/time/tzdb/leap_seconds.cc: Require tzdb
2981         effective target.
2982         * testsuite/std/time/tzdb_list/1.cc: Likewise.
2983
2984 2023-01-14  Jonathan Wakely  <jwakely@redhat.com>
2985
2986         * acinclude.m4 (GLIBCXX_ZONEINFO_DIR): Replace the
2987         --with-libstdcxx-zoneinfo-dir configure option with
2988         --with-libstdcxx-zoneinfo with yes/no/static choices as well as
2989         a directory.
2990         * config.h.in: Regenerate.
2991         * configure: Regenerate.
2992         * doc/xml/manual/configure.xml: Document configure option.
2993         * doc/html/manual/configure.html: Regenerate.
2994         * src/c++20/Makefile.am: Generate tzdata.zi.h header.
2995         * src/c++20/Makefile.in: Regenerate.
2996         * src/c++20/tzdb.cc (__gnu_cxx::zoneinfo_dir_override): Return a
2997         null pointer if no directory is configured.
2998         (zoneinfo_dir): Replace with ...
2999         (zoneinfo_file): New function.
3000         (tzdata_stream): New istream class.
3001         (remote_version, reload_tzdb): Use tzdata_stream.
3002         * testsuite/lib/libstdc++.exp (check_effective_target_tzdb):
3003         Check new _GLIBCXX_STATIC_TZDATA macro and ignore presence of
3004         tzdata.zi file in default location.
3005         * src/c++20/tzdata.zi: New file.
3006
3007 2023-01-14  Jonathan Wakely  <jwakely@redhat.com>
3008
3009         * include/bits/chrono_io.h (operator<<): Fix syntax errors.
3010         * testsuite/std/time/month_day/io.cc: New test.
3011         * testsuite/std/time/month_day_last/io.cc: New test.
3012         * testsuite/std/time/month_weekday/io.cc: New test.
3013         * testsuite/std/time/month_weekday_last/io.cc: New test.
3014         * testsuite/std/time/weekday_indexed/io.cc: New test.
3015         * testsuite/std/time/weekday_last/io.cc: New test.
3016         * testsuite/std/time/year_month/io.cc: New test.
3017         * testsuite/std/time/year_month_day_last/io.cc: New test.
3018         * testsuite/std/time/year_month_weekday/io.cc: New test.
3019         * testsuite/std/time/year_month_weekday_last/io.cc: New test.
3020
3021 2023-01-14  François Dumont  <fdumont@gcc.gnu.org>
3022
3023         * include/std/format [_GLIBCXX_INLINE_VERSION](to_chars): Adapt __asm symbol
3024         specifications.
3025         * config/abi/pre/gnu-versioned-namespace.ver: Add to_chars/from_chars symbols
3026         export.
3027
3028 2023-01-13  Jonathan Wakely  <jwakely@redhat.com>
3029
3030         * include/bits/std_mutex.h: Include <errno.h>.
3031
3032 2023-01-13  Arsen Arsenović  <arsen@aarsen.me>
3033
3034         * testsuite/20_util/to_chars/version.cc: Mark hosted-only.
3035         * testsuite/20_util/uses_allocator/lwg3677.cc: Ditto.
3036         * testsuite/20_util/weak_ptr/cons/self_move.cc: Ditto.
3037         * testsuite/std/ranges/adaptors/as_rvalue/1.cc: Replace usage of
3038         std::make_unique with a freestanding-compatible wrapper around
3039         unique_ptr.
3040         * testsuite/21_strings/basic_string_view/operations/contains/char.cc:
3041         Don't test for presence of __cpp_lib_string_contains on !HOSTED.
3042         * testsuite/21_strings/basic_string_view/operations/contains/char/2.cc:
3043         Ditto.
3044         * testsuite/std/ranges/version_c++23.cc: Don't test for presence
3045         of __cpp_lib_ranges in !HOSTED.
3046
3047 2023-01-13  Arsen Arsenović  <arsen@aarsen.me>
3048
3049         * include/Makefile.am: Install bits/char_traits.h,
3050         std/string_view
3051         * include/Makefile.in: Regenerate.
3052         * include/bits/char_traits.h: Gate hosted-only, wchar-only and
3053         mbstate-only bits behind appropriate #ifs.
3054         * include/std/string_view: Gate <iostream> functionality behind
3055         HOSTED.
3056         * include/std/version: Enable __cpp_lib_constexpr_string_view
3057         and __cpp_lib_starts_ends_with in !HOSTED.
3058         * include/std/ranges: Re-enable __is_basic_string_view on
3059         freestanding, include <string_view> directly.
3060         * include/precompiled/stdc++.h: Include <string_view> when
3061         !HOSTED too.
3062         * testsuite/20_util/function_objects/searchers.cc: Skip testing
3063         boyer_moore searchers on freestanding
3064         * testsuite/21_strings/basic_string_view/capacity/1.cc: Guard
3065         <string>-related tests behind __STDC_HOSTED__.
3066         * testsuite/21_strings/basic_string_view/cons/char/1.cc: Ditto.
3067         * testsuite/21_strings/basic_string_view/cons/char/2.cc: Remove
3068         unused <stdexcept> include.
3069         * testsuite/21_strings/basic_string_view/cons/char/3.cc: Remove
3070         unused <vector> include.
3071         * testsuite/21_strings/basic_string_view/cons/char/range.cc:
3072         Guard <string> related testing behind __STDC_HOSTED__.
3073         * testsuite/21_strings/basic_string_view/cons/wchar_t/1.cc:
3074         Guard <stdexcept> related tests behind __STDC_HOSTED__.
3075         * testsuite/21_strings/basic_string_view/element_access/char/1.cc:
3076         Ditto.
3077         * testsuite/21_strings/basic_string_view/element_access/wchar_t/1.cc:
3078         Guard <stdexcept> tests behind __STDC_HOSTED__.
3079         * testsuite/21_strings/basic_string_view/operations/contains/char/2.cc:
3080         Enable test on freestanding, guard <stdexcept> bits behind
3081         __STDC_HOSTED__.
3082         * testsuite/21_strings/basic_string_view/operations/substr/char.cc:
3083         Guard <stdexcept> bits behind __STDC_HOSTED__.
3084         * testsuite/21_strings/basic_string_view/operations/substr/wchar_t.cc:
3085         Ditto.
3086
3087 2023-01-13  Dimitrij Mijoski  <dmjpp@hotmail.com>
3088
3089         PR libstdc++/86419
3090         * src/c++11/codecvt.cc (read_utf8_code_point): Correctly detect
3091         errors in incomplete multibyte sequences.
3092         (utf16_in): Remove surrogates parameter. Fix conditions for
3093         returning partial.
3094         (utf16_out): Fix condition for returning partial.
3095         (ucs2_in): Do not pass surrogates argument to utf16_in.
3096         * testsuite/22_locale/codecvt/codecvt_unicode.cc: New test.
3097         * testsuite/22_locale/codecvt/codecvt_unicode.h: New header for
3098         tests.
3099         * testsuite/22_locale/codecvt/codecvt_unicode_wchar_t.cc: New
3100         test.
3101
3102 2023-01-13  Jonathan Wakely  <jwakely@redhat.com>
3103
3104         PR libstdc++/108331
3105         * config/io/c_io_stdio.h (__c_lock): Define as a typedef for
3106         __GTHREAD_LEGACY_MUTEX_T if defined.
3107
3108 2023-01-13  Jonathan Wakely  <jwakely@redhat.com>
3109
3110         PR libstdc++/108327
3111         * config/os/gnu-linux/ldbl-extra.ver (GLIBCXX_LDBL_3.4.31):
3112         Export __try_use_facet specializations for facets in namespace
3113         __gnu_cxx_ldbl128.
3114         * config/os/gnu-linux/ldbl-ieee128-extra.ver
3115         (GLIBCXX_IEEE128_3.4.31): Likewise for facets in namespace
3116         __gnu_cxx_ieee128.
3117         * testsuite/util/testsuite_abi.cc: Add to lists of known and
3118         latest versions.
3119
3120 2023-01-13  Jonathan Wakely  <jwakely@redhat.com>
3121
3122         * include/bits/std_mutex.h: Remove <system_error> include.
3123         * include/std/condition_variable: Add <bits/error_constants.h>
3124         include.
3125         * include/std/mutex: Likewise.
3126         * include/std/shared_mutex: Likewise.
3127
3128 2023-01-12  Jonathan Wakely  <jwakely@redhat.com>
3129
3130         PR libstdc++/77691
3131         * include/experimental/memory_resource
3132         (_GLIBCXX_MAX_ALIGN_MATCHES_MALLOC): Define.
3133         (do_allocate, do_deallocate): Check it.
3134         * testsuite/experimental/memory_resource/new_delete_resource.cc:
3135         Relax expected behaviour for 64-bit hppa-hp-hpux11.11.
3136
3137 2023-01-12  Jonathan Wakely  <jwakely@redhat.com>
3138
3139         * doc/xml/manual/abi.xml: Add latest library versions.
3140         * doc/html/manual/abi.html: Regenerate.
3141
3142 2023-01-12  François Dumont  <fdumont@gcc.gnu.org>
3143
3144         PR libstdc++/107189
3145         * include/bits/stl_tree.h (_Rb_tree<>::_M_insert_range_equal): Remove
3146         unused _Alloc_node instance.
3147
3148 2023-01-12  Jonathan Wakely  <jwakely@redhat.com>
3149
3150         * include/bits/atomic_wait.h (__detail::__platform_wait_t):
3151         Define as unsigned long if always lock-free, and unsigned int
3152         otherwise.
3153
3154 2023-01-10  Jonathan Wakely  <jwakely@redhat.com>
3155
3156         * src/c++20/tzdb.cc (tzdb_list::_S_init_tzdb): Use __try and
3157         __catch macros for exception handling.
3158
3159 2023-01-10  Jonathan Wakely  <jwakely@redhat.com>
3160
3161         PR libstdc++/108221
3162         * include/bits/stl_algobase.h (__lg): Replace six overloads with
3163         a single function template for all integer types.
3164         * include/bits/stl_algo.h (__merge_adaptive_resize): Cast
3165         arithmetic results back to _Distance.
3166
3167 2023-01-10  Jonathan Wakely  <jwakely@redhat.com>
3168
3169         PR libstdc++/108221
3170         * include/std/span (span::span()): Un-simplify constraint to
3171         work for size_t of lesser rank than int.
3172
3173 2023-01-07  LIU Hao  <lh_mouse@126.com>
3174
3175         PR middle-end/108300
3176         * src/c++11/system_error.cc: Define `WIN32_LEAN_AND_MEAN` before
3177         <windows.h>.
3178         * src/c++11/thread.cc: Likewise.
3179         * src/c++17/fs_ops.cc: Likewise.
3180         * src/filesystem/ops.cc: Likewise.
3181
3182 2023-01-06  Jonathan Wakely  <jwakely@redhat.com>
3183
3184         PR libstdc++/108228
3185         * src/c++20/tzdb.cc (zoneinfo_dir): Add diagnostic pragma.
3186
3187 2023-01-06  Jonathan Wakely  <jwakely@redhat.com>
3188
3189         PR libstdc++/108235
3190         * src/c++20/tzdb.cc (time_zone::_Impl::RulesCounter): New class
3191         template and partial specialization for synchronizing access to
3192         time_zone::_Impl::infos.
3193         (time_zone::_M_get_sys_info, reload_tzdb): Adjust uses of
3194         rules_counter.
3195
3196 2023-01-06  Patrick Palka  <ppalka@redhat.com>
3197
3198         PR libstdc++/108260
3199         * include/bits/utility.h (__cpp_lib_ranges_zip): Define for C++23.
3200         * include/std/ranges (__cpp_lib_ranges_zip): Likewise.
3201         (__cpp_lib_ranges_chunk): Likewise.
3202         (__cpp_lib_ranges_slide): Likewise.
3203         (__cpp_lib_ranges_chunk_by): Likewise.
3204         (__cpp_lib_ranges_join_with): Likewise.
3205         (__cpp_lib_ranges_repeat): Likewise.
3206         (__cpp_lib_ranges_stride): Likewise.
3207         (__cpp_lib_ranges_cartesian_product): Likewise.
3208         (__cpp_lib_ranges_as_rvalue): Likewise.
3209         * include/std/version: Ditto.
3210         * testsuite/20_util/tuple/p2321r2.cc: Verify value of
3211         feature-test macro.
3212         * testsuite/std/ranges/adaptors/as_rvalue/1.cc: Likewise.
3213         * testsuite/std/ranges/adaptors/chunk/1.cc: Likewise.
3214         * testsuite/std/ranges/adaptors/chunk_by/1.cc: Likewise.
3215         * testsuite/std/ranges/adaptors/join_with/1.cc: Likewise.
3216         * testsuite/std/ranges/adaptors/slide/1.cc: Likewise.
3217         * testsuite/std/ranges/adaptors/stride/1.cc: Likewise.
3218         * testsuite/std/ranges/cartesian_product/1.cc: Likewise.
3219         * testsuite/std/ranges/repeat/1.cc: Likewise.
3220         * testsuite/std/ranges/zip/1.cc: Likewise.
3221         * testsuite/std/ranges/version_c++23.cc: New test.
3222
3223 2023-01-06  Jonathan Wakely  <jwakely@redhat.com>
3224
3225         PR libstdc++/108214
3226         * include/std/bitset (operator>>): Use alloca in the right
3227         scope, not in a constructor.
3228         * testsuite/20_util/bitset/io/input.cc: Check case from PR.
3229
3230 2023-01-06  Jonathan Wakely  <jwakely@redhat.com>
3231
3232         PR libstdc++/108221
3233         * include/std/format (basic_format_arg) [!__cpp_lib_to_chars]:
3234         Disable visiting floating-point types.
3235
3236 2023-01-06  Jonathan Wakely  <jwakely@redhat.com>
3237
3238         PR libstdc++/108288
3239         * include/debug/safe_iterator.h (_Safe_iterator::operator++(int))
3240         (_Safe_iterator::operator--(int)): Do not hold lock around
3241         construction of return value.
3242
3243 2023-01-05  John David Anglin  <danglin@gcc.gnu.org>
3244
3245         * config/cpu/hppa/atomicity.h (_PA_LDCW_INSN): Define.
3246         (__exchange_and_add): Use _PA_LDCW_INSN.  Use ordered store for
3247         lock release.  Revise loop.
3248         (__atomic_add): Likewise.
3249
3250 2023-01-05  Jonathan Wakely  <jwakely@redhat.com>
3251
3252         PR libstdc++/108212
3253         * python/libstdcxx/v6/printers.py (_utc_timezone): New global
3254         variable.
3255         (StdChronoTimePointPrinter::to_string): Use it.
3256
3257 2023-01-05  Jonathan Wakely  <jwakely@redhat.com>
3258
3259         PR libstdc++/108290
3260         * include/std/functional (_Bind_front): Add no_unique_address
3261         attribute to data members.
3262         * testsuite/20_util/function_objects/bind_front/107784.cc: Check
3263         size of call wrappers with empty types for targets and bound
3264         arguments.
3265
3266 2023-01-05  Jonathan Wakely  <jwakely@redhat.com>
3267
3268         PR libstdc++/108211
3269         * src/c++20/tzdb.cc (chrono::current_zone()): Check for zone
3270         using only last component of the name.
3271
3272 2023-01-05  Jonathan Wakely  <jwakely@redhat.com>
3273
3274         PR libstdc++/108228
3275         PR libstdc++/108235
3276         * config/abi/pre/gnu.ver: Move zoneinfo_dir_override export to
3277         the latest symbol version.
3278         * src/c++20/tzdb.cc (USE_ATOMIC_SHARED_PTR): Define to 0 if
3279         atomic<_Node*> is not always lock free.
3280         (USE_ATOMIC_LIST_HEAD): New macro.
3281         [__hpux__] (__gnu_cxx::zoneinfo_dir_override()): Provide
3282         definition of weak symbol.
3283         (tzdb_list::_Node::_S_head): Rename to _S_head_cache.
3284         (tzdb_list::_Node::_S_list_head): New function for accessing
3285         list head efficiently.
3286         (tzdb_list::_Node::_S_cache_list_head): New function for
3287         updating _S_list_head.
3288
3289 2023-01-05  Jonathan Wakely  <jwakely@redhat.com>
3290
3291         PR libstdc++/108265
3292         * include/std/chrono (hh_mm_ss): Do not use chrono::abs if
3293         duration rep is unsigned.
3294         * testsuite/std/time/hh_mm_ss/1.cc: Check unsigned rep.
3295
3296 2023-01-04  Iain Sandoe  <iain@sandoe.co.uk>
3297
3298         PR libstdc++/108228
3299         * config/abi/pre/gnu.ver (GLIBCXX_3.4):
3300         Add __gnu_cxx::zoneinfo_dir_override().
3301
3302 2023-01-04  Jonathan Wakely  <jwakely@redhat.com>
3303
3304         PR libstdc++/108258
3305         * include/std/array (__array_traits<T, 0>::operator T*()): Add
3306         constexpr.
3307         * testsuite/23_containers/array/element_access/constexpr_c++17.cc: Check
3308         std::array<T, 0>::data().
3309
3310 \f
3311 Copyright (C) 2023 Free Software Foundation, Inc.
3312
3313 Copying and distribution of this file, with or without modification,
3314 are permitted in any medium without royalty provided the copyright
3315 notice and this notice are preserved.