libstdc++-v3/ChangeLog

   1 2024-03-29  Arsen Arsenović  <arsen@aarsen.me>
   2
   3         * testsuite/24_iterators/range_generators/01.cc: Drop GCC
   4         Runtime Library Exception.
   5         * testsuite/24_iterators/range_generators/02.cc: Drop GCC
   6         Runtime Library Exception.
   7         * testsuite/24_iterators/range_generators/copy.cc: Drop GCC
   8         Runtime Library Exception.
   9         * testsuite/24_iterators/range_generators/except.cc: Drop GCC
  10         Runtime Library Exception.
  11         * testsuite/24_iterators/range_generators/subrange.cc: Drop GCC
  12         Runtime Library Exception.
  13         * testsuite/24_iterators/range_generators/synopsis.cc: Drop GCC
  14         Runtime Library Exception.
  15         * testsuite/24_iterators/range_generators/iter_deref_return.cc:
  16         Drop GCC Runtime Library Exception from the "You should have
  17         received a copy" paragraph.
  18
  19 2024-03-27  Matthias Kretz  <m.kretz@gsi.de>
  20
  21         * include/experimental/bits/simd_x86.h (_S_masked_unary):
  22         Cast inputs < 16 bytes to 16 byte vectors before calling the
  23         right subtraction builtin. Before returning, truncate to the
  24         return vector type.
  25
  26 2024-03-27  Matthias Kretz  <m.kretz@gsi.de>
  27
  28         * include/experimental/bits/simd_x86.h (_S_masked_unary): Call
  29         the 4- and 8-byte variants of __builtin_ia32_subp[ds] without
  30         rounding direction argument.
  31
  32 2024-03-27  Srinivas Yadav Singanaboina  <vasu.srinivasvasu.14@gmail.com>
  33
  34         * include/Makefile.am: Add simd_sve.h.
  35         * include/Makefile.in: Add simd_sve.h.
  36         * include/experimental/bits/simd.h: Add new SveAbi.
  37         * include/experimental/bits/simd_builtin.h: Use
  38         __no_sve_deduce_t to support existing Neon Abi.
  39         * include/experimental/bits/simd_converter.h: Convert
  40         sequentially when sve is available.
  41         * include/experimental/bits/simd_detail.h: Define sve
  42         specific macro.
  43         * include/experimental/bits/simd_math.h: Fallback frexp
  44         to execute sequntially when sve is available, to handle
  45         fixed_size_simd return type that always uses sve.
  46         * include/experimental/simd: Include bits/simd_sve.h.
  47         * testsuite/experimental/simd/tests/bits/main.h: Enable
  48         testing for sve128, sve256, sve512.
  49         * include/experimental/bits/simd_sve.h: New file.
  50
  51 2024-03-26  Arsen Arsenović  <arsen@aarsen.me>
  52
  53         * include/std/generator (generator::_Iterator::operator*): Fix
  54         return type.
  55         * testsuite/24_iterators/range_generators/iter_deref_return.cc:
  56         New test.
  57
  58 2024-03-26  Arsen Arsenović  <arsen@aarsen.me>
  59
  60         * include/std/generator: Fix _V badname.
  61
  62 2024-03-26  Jonathan Wakely  <jwakely@redhat.com>
  63
  64         * testsuite/19_diagnostics/stacktrace/current.cc: Check for
  65         __cpp_lib_stacktrace instead of check for stacktrace ET.
  66         * testsuite/19_diagnostics/stacktrace/entry.cc: Likewise.
  67         * testsuite/19_diagnostics/stacktrace/hash.cc: Likewise.
  68         * testsuite/19_diagnostics/stacktrace/output.cc: Likewise.
  69         * testsuite/19_diagnostics/stacktrace/stacktrace.cc: Likewise.
  70         * testsuite/19_diagnostics/stacktrace/synopsis.cc: Likewise.
  71         * testsuite/19_diagnostics/stacktrace/version.cc: Likewise.
  72         * testsuite/23_containers/vector/debug/assign4_backtrace_neg.cc:
  73         Likewise.
  74         * testsuite/lib/libstdc++.exp (check_effective_target_stacktrace):
  75         Remove.
  76
  77 2024-03-26  Jonathan Wakely  <jwakely@redhat.com>
  78
  79         * testsuite/lib/dg-options.exp (dg-require-cpp-feature-test):
  80         New proc.
  81         * testsuite/lib/libstdc++.exp (check_v3_target_cpp_feature_test):
  82         New proc.
  83         * testsuite/std/text_encoding/cons.cc: Use new directive to skip
  84         the test if the __cpp_lib_text_encoding feature test macro is
  85         not defined.
  86         * testsuite/std/text_encoding/requirements.cc: Likewise.
  87
  88 2024-03-25  Jonathan Wakely  <jwakely@redhat.com>
  89
  90         * testsuite/std/text_encoding/requirements.cc: #undef the
  91         correct macro.
  92
  93 2024-03-23  Jonathan Wakely  <jwakely@redhat.com>
  94
  95         * include/std/format (formatter): Disable specializations that
  96         would allow sequences of narrow characters to be formatted as
  97         wchar_t without conversion, as per LWG 3944.
  98         * testsuite/std/format/formatter/lwg3944.cc: New test.
  99
 100 2024-03-23  Jonathan Wakely  <jwakely@redhat.com>
 101
 102         * include/bits/utility.h (__is_in_place_index_v): New variable
 103         template.
 104         * include/std/variant (__not_in_place_tag): Define in terms of
 105         variable templates not a class template.
 106
 107 2024-03-23  Jonathan Wakely  <jwakely@redhat.com>
 108
 109         PR libstdc++/114400
 110         * include/std/string_view (operator==): Use std::type_identity_t
 111         in C++20 instead of our own __type_identity_t.
 112
 113 2024-03-22  Jonathan Wakely  <jwakely@redhat.com>
 114
 115         PR libstdc++/114401
 116         * include/bits/hashtable.h (_Hashtable::_M_reinsert_node): Call
 117         release() on node handle instead of just zeroing its pointer.
 118         (_Hashtable::_M_reinsert_node_multi): Likewise.
 119         (_Hashtable::_M_merge_unique): Likewise.
 120         (_Hashtable::_M_merge_multi): Likewise.
 121         * include/bits/node_handle.h (_Node_handle_common::release()):
 122         New member function.
 123         (_Node_handle_common::_Optional_alloc::_M_empty): Remove
 124         unnecessary union member.
 125         (_Node_handle_common): Declare _Hashtable as a friend.
 126         * include/bits/stl_tree.h (_Rb_tree::_M_reinsert_node_unique):
 127         Call release() on node handle instead of just zeroing its
 128         pointer.
 129         (_Rb_tree::_M_reinsert_node_equal): Likewise.
 130         (_Rb_tree::_M_reinsert_node_hint_unique): Likewise.
 131         (_Rb_tree::_M_reinsert_node_hint_equal): Likewise.
 132         * testsuite/23_containers/multiset/modifiers/114401.cc: New test.
 133         * testsuite/23_containers/set/modifiers/114401.cc: New test.
 134         * testsuite/23_containers/unordered_multiset/modifiers/114401.cc: New test.
 135         * testsuite/23_containers/unordered_set/modifiers/114401.cc: New test.
 136
 137 2024-03-22  Jonathan Wakely  <jwakely@redhat.com>
 138
 139         PR libstdc++/113841
 140         * include/bits/allocator.h (allocator<cv T>): Add default
 141         constructor to partial specializations for cv-qualified types.
 142         * include/bits/stl_vector.h (_Vector_impl::_Vector_impl()):
 143         Constrain so that it's only present if the allocator is default
 144         constructible.
 145         * include/bits/stl_bvector.h (_Bvector_impl::_Bvector_impl()):
 146         Likewise.
 147         * testsuite/23_containers/vector/cons/113841.cc: New test.
 148
 149 2024-03-22  Jonathan Wakely  <jwakely@redhat.com>
 150
 151         * include/bits/stl_construct.h (destroy_at, construct_at): Guard
 152         with feature test macros instead of just __cplusplus.
 153
 154 2024-03-22  Jonathan Wakely  <jwakely@redhat.com>
 155
 156         * include/bits/version.def (generator, tuple_like): Move earlier
 157         in the file.
 158         * include/bits/version.h: Regenerate.
 159
 160 2024-03-22  Jonathan Wakely  <jwakely@redhat.com>
 161
 162         PR libstdc++/114394
 163         * include/std/functional (bind): Use __invoke_result_t instead
 164         of result_of::type.
 165         * include/std/type_traits (__invoke_result_t): New alias
 166         template.
 167         * testsuite/20_util/bind/ref_neg.cc: Adjust prune pattern.
 168
 169 2024-03-20  François Dumont  <fdumont@gcc.gnu.org>
 170
 171         * include/bits/version.def (null_iterators): Remove extra_cond.
 172         * include/bits/version.h: Regenerate.
 173
 174 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
 175
 176         PR libstdc++/114359
 177         * include/bits/random.tcc (binomial_distribution::param_type):
 178         Ensure arithmetic is done as type double.
 179         * testsuite/26_numerics/random/binomial_distribution/114359.cc: New test.
 180
 181 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
 182
 183         PR libstdc++/101228
 184         * include/pstl/parallel_backend_tbb.h (TBB_SUPPRESS_DEPRECATED_MESSAGES):
 185         Define before including <tbb/task.h> then undef afterwards.
 186
 187 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
 188
 189         * include/Makefile.am [MAINTAINER_MODE]: Add target to
 190         automatically update <bits/version.h>.
 191         * include/Makefile.in: Regenerate.
 192
 193 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
 194
 195         * doc/xml/manual/build_hacking.xml: Document generated files.
 196         Update list of convenience libraries and sub-directories under
 197         the src directory.
 198         * doc/html/*: Regenerate.
 199
 200 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
 201
 202         * include/bits/text_encoding-data.h: Regenerate.
 203         * include/bits/unicode-data.h: Regenerate.
 204         * scripts/gen_text_encoding_data.py: Fix header of generated
 205         file to name the correct script.
 206
 207 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
 208
 209         * testsuite/util/pstl/test_utils.h: Fix typos in comments.
 210
 211 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
 212
 213         PR libstdc++/114367
 214         * include/bits/stl_bvector.h (_M_allocate): Use allocator's
 215         construct function to begin lifetime of words.
 216
 217 2024-03-19  Iain Sandoe  <iain@sandoe.co.uk>
 218
 219         * testsuite/lib/dg-options.exp (atomic_link_flags): Emit a -B
 220         option for the path to the uninstalled libatomic.
 221
 222 2024-03-19  Iain Sandoe  <iain@sandoe.co.uk>
 223
 224         * testsuite/lib/libstdc++.exp (v3_target_compile): Instead of
 225         /dev/null, use a temporary file for test executables on Darwin.
 226
 227 2024-03-18  François Dumont  <fdumont@gcc.gnu.org>
 228
 229         * include/debug/safe_iterator.tcc (_Safe_iterator<>::_M_can_advance):
 230         Accept 0 offset advance on value-initialized iterator.
 231         * testsuite/23_containers/vector/debug/n3644.cc: New test case.
 232
 233 2024-03-18  François Dumont  <fdumont@gcc.gnu.org>
 234
 235         * include/debug/safe_local_iterator.tcc
 236         (_Safe_local_iterator::_M_valid_range): Add _M_value_initialized and
 237         _M_singular checks.
 238         * testsuite/23_containers/unordered_set/debug/114316.cc: New test case.
 239
 240 2024-03-17  François Dumont  <fdumont@gcc.gnu.org>
 241
 242         PR libstdc++/114316
 243         * include/debug/safe_iterator.tcc (_Safe_iterator<>::_M_valid_range):
 244         First check if both iterators are value-initialized before checking if
 245         singular.
 246         * testsuite/23_containers/set/debug/114316.cc: New test case.
 247         * testsuite/23_containers/vector/debug/114316.cc: New test case.
 248
 249 2024-03-14  Jonathan Wakely  <jwakely@redhat.com>
 250
 251         PR libstdc++/114325
 252         * include/std/format (_Scanner::_M_scan): Pass correct length to
 253         __to_chars_10_impl.
 254         * testsuite/std/format/functions/format.cc: Check negative
 255         integers with empty format-spec.
 256
 257 2024-03-14  Jonathan Wakely  <jwakely@redhat.com>
 258
 259         * include/bits/stl_algo.h (find_end, all_of, none_of, any_of)
 260         (find_if_not, is_partitioned, partition_point, remove)
 261         (remove_if, unique, lower_bound, upper_bound, equal_range)
 262         (binary_search, includes, is_sorted, is_sorted_until, minmax)
 263         (minmax_element, is_permutation, clamp, find_if, find_first_of)
 264         (adjacent_find, count, count_if, search, search_n, min_element)
 265         (max_element): Add nodiscard attribute.
 266         * include/bits/stl_algobase.h (min, max, lower_bound, equal)
 267         (lexicographical_compare, lexicographical_compare_three_way)
 268         (mismatch): Likewise.
 269         * include/bits/stl_heap.h (is_heap, is_heap_until): Likewise.
 270         * testsuite/25_algorithms/equal/debug/1_neg.cc: Add dg-warning.
 271         * testsuite/25_algorithms/equal/debug/2_neg.cc: Likewise.
 272         * testsuite/25_algorithms/equal/debug/3_neg.cc: Likewise.
 273         * testsuite/25_algorithms/find_first_of/concept_check_1.cc:
 274         Likewise.
 275         * testsuite/25_algorithms/is_permutation/2.cc: Likewise.
 276         * testsuite/25_algorithms/lexicographical_compare/71545.cc:
 277         Likewise.
 278         * testsuite/25_algorithms/lower_bound/33613.cc: Likewise.
 279         * testsuite/25_algorithms/lower_bound/debug/irreflexive.cc:
 280         Likewise.
 281         * testsuite/25_algorithms/lower_bound/debug/partitioned_neg.cc:
 282         Likewise.
 283         * testsuite/25_algorithms/lower_bound/debug/partitioned_pred_neg.cc:
 284         Likewise.
 285         * testsuite/25_algorithms/minmax/3.cc: Likewise.
 286         * testsuite/25_algorithms/search/78346.cc: Likewise.
 287         * testsuite/25_algorithms/search_n/58358.cc: Likewise.
 288         * testsuite/25_algorithms/unique/1.cc: Likewise.
 289         * testsuite/25_algorithms/unique/11480.cc: Likewise.
 290         * testsuite/25_algorithms/upper_bound/33613.cc: Likewise.
 291         * testsuite/25_algorithms/upper_bound/debug/partitioned_neg.cc:
 292         Likewise.
 293         * testsuite/25_algorithms/upper_bound/debug/partitioned_pred_neg.cc:
 294         Likewise.
 295         * testsuite/ext/concept_checks.cc: Likewise.
 296         * testsuite/ext/is_heap/47709.cc: Likewise.
 297         * testsuite/ext/is_sorted/cxx0x.cc: Likewise.
 298
 299 2024-03-14  xndcn  <xndchn@gmail.com>
 300
 301         * include/bits/atomic_base.h (__atomic_float::__atomic_float(Fp)):
 302         Clear padding.
 303         * testsuite/29_atomics/atomic_float/compare_exchange_padding.cc:
 304         New test.
 305
 306 2024-03-14  Jonathan Wakely  <jwakely@redhat.com>
 307
 308         PR libstdc++/66146
 309         * doc/xml/manual/status_cxx2011.xml: Remove mention of Linux in
 310         note about std::call_once.
 311         * doc/xml/manual/status_cxx2014.xml: Likewise.
 312         * doc/xml/manual/status_cxx2017.xml: Likewise.
 313         * doc/html/manual/status.html: Regenerate.
 314
 315 2024-03-14  Jonathan Wakely  <jwakely@redhat.com>
 316
 317         * doc/xml/manual/status_cxx2023.xml: Update C++23 status table.
 318         * doc/html/manual/status.html: Regenerate.
 319         * include/bits/version.def: Fix typo in comment.
 320
 321 2024-03-13  Jonathan Wakely  <jwakely@redhat.com>
 322
 323         * testsuite/libstdc++-prettyprinters/cxx11.cc: Move custom_cat
 324         to namespace scope.
 325
 326 2024-03-13  Jonathan Wakely  <jwakely@redhat.com>
 327
 328         * doc/xml/manual/debug.xml: Improve docs on debug builds and
 329         using ASan. Mention _GLIBCXX_ASSERTIONS. Reorder sections to put
 330         the most relevant ones first.
 331         * doc/xml/manual/using.xml: Add comma.
 332         * doc/html/*: Regenerate.
 333
 334 2024-03-13  Jonathan Wakely  <jwakely@redhat.com>
 335
 336         * doc/xml/manual/debug.xml: Document that concept checking might
 337         be removed in future.
 338         * doc/xml/manual/extensions.xml: Likewise.
 339
 340 2024-03-09  Jonathan Wakely  <jwakely@redhat.com>
 341
 342         PR libstdc++/114240
 343         * include/bits/chrono_io.h (_Parser::operator()): Assume
 344         hours(0) for a time_point, so that a time is not required
 345         to be present.
 346         * testsuite/std/time/parse/114240.cc: New test.
 347
 348 2024-03-09  Jonathan Wakely  <jwakely@redhat.com>
 349
 350         PR libstdc++/114279
 351         * include/bits/chrono_io.h (_Parser::_M_is_leap_second): New
 352         data member.
 353         (_Parser::_M_reserved): Reserve padding bits for future use.
 354         (_Parser::operator()): Set _M_is_leap_second if %S reads 60s.
 355         (from_stream): Only allow _M_is_leap_second for utc_time and
 356         local_time. Adjust arithmetic for utc_time so that leap seconds
 357         are preserved. Use time_point_cast to convert to a possibly
 358         lower-precision result type.
 359         * testsuite/std/time/parse.cc: Move to ...
 360         * testsuite/std/time/parse/parse.cc: ... here.
 361         * testsuite/std/time/parse/114279.cc: New test.
 362
 363 2024-03-07  Jonathan Wakely  <jwakely@redhat.com>
 364
 365         * include/bits/chrono_io.h (_Parser::operator()): Use
 366         std::from_chars to parse fractional seconds.
 367
 368 2024-03-07  Jonathan Wakely  <jwakely@redhat.com>
 369
 370         PR libstdc++/114244
 371         * include/bits/chrono_io.h (_Parser::operator()): Remove
 372         redundant uses of duration_cast. Use chrono::round to convert
 373         long double value to durations with integer representations.
 374         Check represenation type when deciding whether to skip parsing
 375         fractional seconds.
 376         * testsuite/20_util/duration/114244.cc: New test.
 377         * testsuite/20_util/duration/io.cc: Check that a floating-point
 378         duration with ratio<1> precision can be parsed.
 379
 380 2024-03-07  Jonathan Wakely  <jwakely@redhat.com>
 381
 382         PR libstdc++/114103
 383         * include/bits/version.def (atomic_lock_free_type_aliases): Add
 384         extra_cond to check for at least one always-lock-free type.
 385         * include/bits/version.h: Regenerate.
 386         * include/std/atomic (atomic_signed_lock_free)
 387         (atomic_unsigned_lock_free): Only use always-lock-free types.
 388         * src/c++20/tzdb.cc (time_zone::_Impl::RulesCounter): Don't use
 389         atomic counter if lock-free aliases aren't available.
 390         * testsuite/29_atomics/atomic/lock_free_aliases.cc: XFAIL for
 391         targets without lock-free word-size compare_exchange.
 392
 393 2024-03-07  Jonathan Wakely  <jwakely@redhat.com>
 394
 395         * include/std/chrono (__get_leap_second_info): Update expiry
 396         time for hardcoded list of leap seconds.
 397         * testsuite/std/time/tzdb/leap_seconds.cc: Update comment.
 398
 399 2024-03-07  Jonathan Wakely  <jwakely@redhat.com>
 400
 401         * testsuite/23_containers/deque/allocator/default_init.cc: Use
 402         std::memset instead of __builtin_memset.
 403         * testsuite/23_containers/forward_list/allocator/default_init.cc:
 404         Likewise.
 405         * testsuite/23_containers/list/allocator/default_init.cc:
 406         Likewise.
 407         * testsuite/23_containers/map/allocator/default_init.cc:
 408         Likewise.
 409         * testsuite/23_containers/set/allocator/default_init.cc:
 410         Likewise.
 411         * testsuite/23_containers/unordered_map/allocator/default_init.cc:
 412         Likewise.
 413         * testsuite/23_containers/unordered_set/allocator/default_init.cc:
 414         Likewise.
 415         * testsuite/23_containers/vector/allocator/default_init.cc:
 416         Likewise.
 417         * testsuite/23_containers/vector/bool/allocator/default_init.cc:
 418         Likewise.
 419         * testsuite/29_atomics/atomic/compare_exchange_padding.cc:
 420         Likewise.
 421         * testsuite/util/atomic/wait_notify_util.h: Likewise.
 422
 423 2024-03-07  Jonathan Wakely  <jwakely@redhat.com>
 424
 425         * include/std/format (_Arg_store::_S_make_elt): Add two
 426         static_assert checks to give more user-friendly error messages.
 427         * testsuite/lib/prune.exp (libstdc++-dg-prune): Prune another
 428         form of "in requirements with" note.
 429         * testsuite/std/format/arguments/args_neg.cc: Check for
 430         user-friendly diagnostics for non-formattable types.
 431         * testsuite/std/format/string_neg.cc: Likewise.
 432
 433 2024-03-04  Jonathan Wakely  <jwakely@redhat.com>
 434
 435         PR libstdc++/114147
 436         * include/std/tuple (tuple::tuple(allocator_arg_t, const Alloc&)):
 437         Add missing overload of allocator-extended default constructor.
 438         (tuple<T1,T2>::tuple(allocator_arg_t, const Alloc&)): Likewise.
 439         * testsuite/20_util/tuple/cons/114147.cc: New test.
 440
 441 2024-02-29  Jonathan Wakely  <jwakely@redhat.com>
 442
 443         * include/std/format (basic_format_arg::handle::__maybe_const_t):
 444         Fix condition to check if const type is formattable.
 445         (basic_format_arg::handle::handle(T&)): Remove redundant
 446         static_assert.
 447         * testsuite/std/format/formatter/basic.cc: New test.
 448
 449 2024-02-29  Jonathan Wakely  <jwakely@redhat.com>
 450
 451         PR libstdc++/113960
 452         * include/bits/stl_algobase.h (__is_byte_iter): Replace with ...
 453         (__memcmp_ordered_with): New concept.
 454         (lexicographical_compare_three_way): Use __memcmp_ordered_with
 455         instead of __is_byte_iter. Use correct length for memcmp.
 456         * testsuite/25_algorithms/lexicographical_compare_three_way/113960.cc:
 457         New test.
 458
 459 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
 460
 461         PR libstdc++/114152
 462         * include/experimental/scope (scope_exit scope_fail): Make
 463         destructor unconditionally noexcept.
 464         (scope_sucess): Fix noexcept-specifier.
 465         * testsuite/experimental/scopeguard/114152.cc: New test.
 466
 467 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
 468
 469         * doc/xml/manual/appendix_contributing.xml: Change URLs to use
 470         https.
 471         * doc/html/manual/*: Regenerate.
 472
 473 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
 474
 475         * doc/xml/manual/appendix_contributing.xml: Replace outdated
 476         info on ChangeLog entries.
 477         * doc/html/manual/appendix_contributing.html: Regenerate.
 478
 479 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
 480
 481         * include/bits/stl_bvector.h (vector<bool, A>::at): Add
 482         nodiscard.
 483         * include/bits/stl_vector.h (vector<T, A>::at): Likewise.
 484         (operator==, operator<=>, operator<, operator!=, operator>)
 485         (operator<=, operator>=): Likewise.
 486         * include/debug/vector (operator==, operator<=>, operator<)
 487         (operator!=, operator>, operator<=, operator>=): Likewise.
 488         * testsuite/23_containers/vector/nodiscard.cc: New test.
 489
 490 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
 491
 492         * include/bits/atomic_base.h (operator|, operator&): Add
 493         noexcept.
 494         * include/bits/fs_fwd.h (operator&, operator|, operator^)
 495         (operator~): Add nodiscard to overloads for copy_options, perms,
 496         perm_options, and directory_options.
 497         * include/bits/ios_base.h (operator&, operator|, operator^)
 498         (operator~): Add nodiscard and noexcept to overloads for
 499         _Ios_Fmtflags, _Ios_Openmode, and _Ios_Iostate.
 500         (operator|=, operator&=, operator^=): Add constexpr for C++14.
 501         * include/bits/regex_constants.h (operator&, operator|, operator^)
 502         (operator~): Add nodiscard and noexcept to overloads for
 503         syntax_option_type and match_flag_type.
 504         (operator|=, operator&=, operator^=): Add noexcept.
 505         * include/std/charconv (operator&, operator|, operator^)
 506         (operator~): Add nodiscard to overloads for chars_format.
 507         * include/std/future (operator&, operator|, operator^)
 508         (operator~): Add nodiscard for overloads for launch.
 509         (operator&=, operator|=, operator^=): Add constexpr for C++14.
 510         * include/experimental/bits/fs_fwd.h  (operator&, operator|)
 511         (operator^, operator~): Add nodiscard to overloads for
 512         copy_options, perms, and directory_options.
 513         * testsuite/27_io/ios_base/types/fmtflags/bitmask_operators.cc:
 514         Add dg-warning for nodiscard warnings.
 515         * testsuite/27_io/ios_base/types/iostate/bitmask_operators.cc:
 516         Likewise.
 517         * testsuite/27_io/ios_base/types/openmode/bitmask_operators.cc:
 518         Likewise.
 519         * testsuite/27_io/filesystem/operations/bitmask_types.cc:
 520         New test.
 521
 522 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
 523
 524         * testsuite/27_io/basic_ostream/print/1.cc: Check error
 525         handling.
 526         * testsuite/27_io/print/1.cc: Likewise.
 527
 528 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
 529
 530         * include/std/ostream (vprint_unicode) [__CYGWIN__]: Use POSIX
 531         code path for Cygwin instead of Windows.
 532         * include/std/print (vprint_unicode) [__CYGWIN__]: Likewise.
 533         * testsuite/27_io/basic_ostream/print/1.cc: Only add -lstdc++exp
 534         for *-*-mingw* targets.
 535         * testsuite/27_io/print/1.cc: Likewise.
 536
 537 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
 538
 539         * include/bits/alloc_traits.h: Include <bits/stl_iterator.h> for
 540         __make_move_if_noexcept_iterator.
 541
 542 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
 543
 544         * include/std/stacktrace: Add nodiscard attribute to all
 545         functions without side effects.
 546
 547 2024-02-20  François Dumont  <fdumont@gcc.gnu.org>
 548
 549         * include/bits/stl_algobase.h (std::__niter_wrap): Add a call to
 550         std::__niter_base on res iterator.
 551
 552 2024-02-19  Iain Sandoe  <iain@sandoe.co.uk>
 553             Jonathan Wakely  <jwakely@redhat.com>
 554
 555         PR target/112397
 556         * configure: Regenerate.
 557         * configure.ac: Detect if we are building for Darwin.
 558         * libsupc++/Makefile.am: If we are building for Darwin, then
 559         suppress hot/cold partitioning for the array allocators.
 560         * libsupc++/Makefile.in: Regenerated.
 561
 562 2024-02-17  François Dumont  <fdumont@gcc.gnu.org>
 563
 564         * include/bits/stl_algobase.h (std::__niter_base): Redefine the overload
 565         definitions for __gnu_debug::_Safe_iterator.
 566         * include/debug/safe_iterator.tcc (std::__niter_base): Adapt declarations.
 567
 568 2024-02-16  Jonathan Wakely  <jwakely@redhat.com>
 569
 570         PR libstdc++/87744
 571         PR libstdc++/113961
 572         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
 573         line number.
 574
 575 2024-02-16  Jonathan Wakely  <jwakely@redhat.com>
 576
 577         PR libstdc++/87744
 578         PR libstdc++/113931
 579         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
 580         line number.
 581
 582 2024-02-16  Jonathan Wakely  <jwakely@redhat.com>
 583
 584         * doc/xml/manual/debug_mode.xml: Update docs for backtraces.
 585         * doc/html/manual/debug_mode_using.html: Regenerate.
 586
 587 2024-02-16  Jonathan Wakely  <jwakely@redhat.com>
 588
 589         * doc/xml/manual/test.xml: Fix spelling of <envar> elements.
 590         * doc/html/manual/test.html: Regenerate.
 591
 592 2024-02-15  Jonathan Wakely  <jwakely@redhat.com>
 593
 594         PR libstdc++/113806
 595         * include/std/bitset (bitset::operator>>=): Remove redundant
 596         call to _M_do_sanitize.
 597
 598 2024-02-15  Jonathan Wakely  <jwakely@redhat.com>
 599
 600         PR libstdc++/113807
 601         * include/std/bitset (bitset::set()): Use memset instead of a
 602         loop over the individual words.
 603
 604 2024-02-15  Jonathan Wakely  <jwakely@redhat.com>
 605
 606         PR libstdc++/113811
 607         * include/bits/stl_algo.h (__rotate): Use unsigned values for
 608         division.
 609
 610 2024-02-15  Jonathan Wakely  <jwakely@redhat.com>
 611
 612         PR libstdc++/99117
 613         * include/std/valarray (valarray::operator=(const _Expr&)):
 614         Use loop to copy instead of __valarray_copy with _Array.
 615         * testsuite/26_numerics/valarray/99117.cc: New test.
 616
 617 2024-02-15  Jonathan Wakely  <jwakely@redhat.com>
 618
 619         * src/c++20/tzdata.zi: Import new file from 2024a release.
 620         * src/c++20/tzdb.cc (tzdb_list::_Node::_S_read_leap_seconds)
 621         Update expiry date for leap seconds list.
 622
 623 2024-02-15  Jonathan Wakely  <jwakely@redhat.com>
 624
 625         PR libstdc++/87744
 626         * include/bits/random.h [!__SIZEOF_INT128__] (_Select_uint_least_t):
 627         Define specialization for 64-bit generators with
 628         non-power-of-two modulus and large constants.
 629         (__mod): Use if constexpr unconditionally.
 630         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
 631         line number.
 632         * testsuite/26_numerics/random/linear_congruential_engine/87744.cc:
 633         New test.
 634
 635 2024-02-14  Gerald Pfeifer  <gerald@pfeifer.com>
 636
 637         * doc/xml/manual/status_cxx2023.xml: Fix C++ item p2442 to be
 638         version 1.
 639         * doc/html/manual/status.html: Regenerate.
 640
 641 2024-02-12  Paul Keir  <paul.keir@uws.ac.uk>
 642
 643         PR libstdc++/113294
 644         * include/bits/basic_string.h (basic_string::operator=): Use
 645         _M_use_local_data() instead of _M_local_buf on the moved-from
 646         string.
 647         * testsuite/21_strings/basic_string/modifiers/constexpr.cc
 648         (test_move): New test.
 649
 650 2024-02-09  Ken Matsui  <kmatsui@gcc.gnu.org>
 651
 652         * include/bits/c++config (_GLIBCXX_HAVE_BUILTIN_IS_SAME):
 653         Removed.
 654         * include/std/type_traits (is_same): Use
 655         _GLIBCXX_USE_BUILTIN_TRAIT instead of
 656         _GLIBCXX_HAVE_BUILTIN_IS_SAME.
 657         (is_same_v): Likewise.
 658
 659 2024-02-08  Jonathan Wakely  <jwakely@redhat.com>
 660
 661         * include/bits/shared_ptr_atomic.h: Fix typo in comment.
 662
 663 2024-02-08  Jonathan Wakely  <jwakely@redhat.com>
 664
 665         PR libstdc++/100147
 666         * include/bits/gslice.h (operator=): Add comment about lack of
 667         self-assignment check.
 668
 669 2024-02-08  Jonathan Wakely  <jwakely@redhat.com>
 670
 671         * include/tr2/type_traits (bases, direct_bases): Use
 672         __has_builtin to check if required built-ins are supported.
 673
 674 2024-02-07  Patrick Palka  <ppalka@redhat.com>
 675
 676         PR testsuite/113710
 677         PR c++/113814
 678         * include/bits/stl_pair.h (tuple_element): Add forward
 679         declaration of the partial specialization for tuple.
 680
 681 2024-02-06  Torbjörn SVENSSON  <torbjorn.svensson@foss.st.com>
 682
 683         * testsuite/lib/libstdc++.exp: Use "nul" for Windows, "/dev/null"
 684         for other environments.
 685
 686 2024-02-04  Jonathan Wakely  <jwakely@redhat.com>
 687
 688         * include/std/format (__format::_Spec::_M_reserved): Define new
 689         bit-field members to reserve padding bits for future extensions.
 690
 691 2024-02-04  Jonathan Wakely  <jwakely@redhat.com>
 692
 693         * src/experimental/Makefile.am: Use libstdc++fsconvenience.a
 694         instead of libstdc++fs.a.
 695         * src/experimental/Makefile.in: Regenerate.
 696         * src/filesystem/Makefile.am: Build libstdc++fsconvenience.a as
 697         well.
 698         * src/filesystem/Makefile.in: Regenerate.
 699
 700 2024-02-04  Jonathan Wakely  <jwakely@redhat.com>
 701
 702         * include/bits/text_encoding-data.h: Regenerate.
 703         * include/bits/unicode-data.h: Regenerate.
 704         * scripts/gen_text_encoding_data.py: Add copyright and license
 705         text to the output.
 706
 707 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
 708
 709         PR libstdc++/113335
 710         * include/bits/std_function.h (__function_guide_helper): Add
 711         partial specialization for explicit object member functions, as
 712         per LWG 3617.
 713         * testsuite/20_util/function/cons/deduction_c++23.cc: Check
 714         explicit object member functions.
 715         * testsuite/30_threads/packaged_task/cons/deduction_c++23.cc:
 716         Likewise.
 717
 718 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
 719
 720         * testsuite/17_intro/names.cc [_AIX]: Undefine "u".
 721
 722 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
 723
 724         * include/experimental/internet (network_v6::network): Define.
 725         (network_v6::hosts): Finish implementing.
 726         (network_v6::to_string): Do not concatenate std::string to
 727         arbitrary std::basic_string specialization.
 728         * testsuite/experimental/net/internet/network/v6/cons.cc: New
 729         test.
 730
 731 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
 732
 733         PR libstdc++/90276
 734         * testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: Fix
 735         comparison function to use less-than instead of equality.
 736
 737 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
 738
 739         PR libstdc++/90276
 740         * testsuite/util/pstl/test_utils.h (reverse_invoker): Do not use
 741         perfect forwarding for iterator arguments.
 742
 743 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
 744
 745         * include/std/string_view (basic_string_view(R&&)): Remove
 746         constraint that traits_type must be the same, as per LWG 3857.
 747         * testsuite/21_strings/basic_string_view/cons/char/range_c++20.cc:
 748         Explicit conversion between different specializations should be
 749         allowed.
 750         * testsuite/21_strings/basic_string_view/cons/wchar_t/range_c++20.cc:
 751         Likewise.
 752
 753 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
 754
 755         * include/std/syncstream (basic_osyncstream::operator=): Remove
 756         noexcept, as per LWG 3867.
 757
 758 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
 759
 760         * include/std/generator (promise_type::yield_value): Remove
 761         noexcept from fourth overload, as per LWG 3894.
 762
 763 2024-02-01  Patrick Palka  <ppalka@redhat.com>
 764
 765         PR libstdc++/113309
 766         PR libstdc++/109203
 767         * include/bits/ranges_util.h (__detail::__pair_like): Don't
 768         define in C++23 mode.
 769         (__detail::__pair_like_convertible_from): Adjust as per P2165R4.
 770         (__detail::__is_subrange<subrange>): Moved from <ranges>.
 771         (__detail::__is_tuple_like_v<subrange>): Likewise.
 772         * include/bits/stl_iterator.h: Include <bits/utility.h> for
 773         C++23.
 774         (__different_from): Move to <concepts>.
 775         (__iter_key_t): Adjust for C++23 as per P2165R4.
 776         (__iter_val_t): Likewise.
 777         * include/bits/stl_pair.h (pair, array): Forward declare.
 778         (get): Forward declare all overloads relevant to P2165R4
 779         tuple-like constructors.
 780         (__is_tuple_v): Define for C++23.
 781         (__is_tuple_like_v): Define for C++23.
 782         (__tuple_like): Define for C++23 as per P2165R4.
 783         (__pair_like): Define for C++23 as per P2165R4.
 784         (__eligibile_tuple_like): Define for C++23.
 785         (__eligibile_pair_like): Define for C++23.
 786         (pair::_S_constructible_from_pair_like): Define for C++23.
 787         (pair::_S_convertible_from_pair_like): Define for C++23.
 788         (pair::_S_dangles_from_pair_like): Define for C++23.
 789         (pair::pair): Define overloads taking a tuple-like type for
 790         C++23 as per P2165R4.
 791         (pair::_S_assignable_from_tuple_like): Define for C++23.
 792         (pair::_S_const_assignable_from_tuple_like): Define for C++23.
 793         (pair::operator=): Define overloads taking a tuple-like type for
 794         C++23 as per P2165R4.
 795         * include/bits/utility.h (ranges::__detail::__is_subrange):
 796         Moved from <ranges>.
 797         * include/bits/version.def (tuple_like): Define for C++23.
 798         * include/bits/version.h: Regenerate.
 799         * include/std/concepts (__different_from): Moved from
 800         <bits/stl_iterator.h>.
 801         (ranges::__swap::__adl_swap): Clarify which __detail namespace.
 802         * include/std/map (__cpp_lib_tuple_like): Define C++23.
 803         * include/std/ranges (__detail::__is_subrange): Moved to
 804         <bits/utility.h>.
 805         (__detail::__is_subrange<subrange>): Moved to <bits/ranges_util.h>
 806         (__detail::__has_tuple_element): Adjust for C++23 as per P2165R4.
 807         (__detail::__tuple_or_pair): Remove as per P2165R4.  Replace all
 808         uses with plain tuple as per P2165R4.
 809         * include/std/tuple (__cpp_lib_tuple_like): Define for C++23.
 810         (__tuple_like_tag_t): Define for C++23.
 811         (__tuple_cmp): Forward declare for C++23.
 812         (_Tuple_impl::_Tuple_impl): Define overloads taking
 813         __tuple_like_tag_t and a tuple-like type for C++23.
 814         (_Tuple_impl::_M_assign): Likewise.
 815         (tuple::__constructible_from_tuple_like): Define for C++23.
 816         (tuple::__convertible_from_tuple_like): Define for C++23.
 817         (tuple::__dangles_from_tuple_like): Define for C++23.
 818         (tuple::tuple): Define overloads taking a tuple-like type for
 819         C++23 as per P2165R4.
 820         (tuple::__assignable_from_tuple_like): Define for C++23.
 821         (tuple::__const_assignable_from_tuple_like): Define for C++23.
 822         (tuple::operator=): Define overloads taking a tuple-like type
 823         for C++23 as per P2165R4.
 824         (tuple::__tuple_like_common_comparison_category): Define for C++23.
 825         (tuple::operator<=>): Define overload taking a tuple-like type
 826         for C++23 as per P2165R4.
 827         (array, get): Forward declarations moved to <bits/stl_pair.h>.
 828         (tuple_cat): Constrain with __tuple_like for C++23 as per P2165R4.
 829         (apply): Likewise.
 830         (make_from_tuple): Likewise.
 831         (__tuple_like_common_reference): Define for C++23.
 832         (basic_common_reference): Adjust as per P2165R4.
 833         (__tuple_like_common_type): Define for C++23.
 834         (common_type): Adjust as per P2165R4.
 835         * include/std/unordered_map (__cpp_lib_tuple_like): Define for
 836         C++23.
 837         * include/std/utility (__cpp_lib_tuple_like): Define for C++23.
 838         * testsuite/std/ranges/zip/1.cc (test01): Adjust to handle pair
 839         and 2-tuple interchangeably.
 840         (test05): New test.
 841         * testsuite/20_util/pair/p2165r4.cc: New test.
 842         * testsuite/20_util/tuple/p2165r4.cc: New test.
 843
 844 2024-02-01  Patrick Palka  <ppalka@redhat.com>
 845
 846         * include/bits/stl_pair.h (pair::_S_const_assignable): Define,
 847         factored out from ...
 848         (pair::operator=): ... the constraints of the const overloads.
 849
 850 2024-02-01  Jonathan Wakely  <jwakely@redhat.com>
 851
 852         * include/bits/version.tpl: Do not use def-file-line for each
 853         macro being defined.
 854         * include/bits/version.h: Regenerate.
 855
 856 2024-02-01  Jonathan Wakely  <jwakely@redhat.com>
 857
 858         * testsuite/25_algorithms/copy/debug/constexpr_neg.cc: Adjust
 859         dg-error pattern.
 860         * testsuite/25_algorithms/copy_backward/debug/constexpr_neg.cc:
 861         Likewise.
 862         * testsuite/25_algorithms/equal/debug/constexpr_neg.cc:
 863         Likewise.
 864         * testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_neg.cc:
 865         Likewise.
 866         * testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_pred_neg.cc:
 867         Likewise.
 868         * testsuite/25_algorithms/lower_bound/debug/constexpr_valid_range_neg.cc:
 869         Likewise.
 870         * testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_neg.cc:
 871         Likewise.
 872         * testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_pred_neg.cc:
 873         Likewise.
 874         * testsuite/25_algorithms/upper_bound/debug/constexpr_valid_range_neg.cc:
 875         Likewise.
 876
 877 2024-02-01  Jonathan Wakely  <jwakely@redhat.com>
 878
 879         * include/experimental/internet (network_v4::to_string()):
 880         Remove lambda and use of resize_and_overwrite.
 881
 882 2024-01-31  Jonathan Wakely  <jwakely@redhat.com>
 883
 884         * acinclude.m4 (GLIBCXX_CHECK_TEXT_ENCODING): Use <xlocale.h> if
 885         needed for newlocale.
 886         * configure: Regenerate.
 887         * src/c++26/text_encoding.cc: Use <xlocale.h>.
 888
 889 2024-01-31  Jonathan Wakely  <jwakely@redhat.com>
 890             Ewan Higgs  <ewan.higgs@gmail.com>
 891
 892         * include/bits/text_encoding-data.h: Regenerate.
 893         * scripts/gen_text_encoding_data.py: Add extra_aliases dict
 894         containing "ASCII".
 895         * testsuite/std/text_encoding/cons.cc: Check "ascii" is known.
 896
 897 2024-01-31  Jonathan Wakely  <jwakely@redhat.com>
 898
 899         * doc/xml/manual/using.xml: Update tables of supported headers.
 900         * doc/html/*: Regenerate.
 901
 902 2024-01-31  Jonathan Wakely  <jwakely@redhat.com>
 903
 904         * include/std/bitset (_Base_bitset::_M_do_to_ullong): Avoid
 905         -Wshift-count-overflow warning.
 906
 907 2024-01-30  Jonathan Wakely  <jwakely@redhat.com>
 908
 909         * testsuite/std/time/clock/gps/io.cc: Fix expected result in
 910         assertion and call test_format() from main.
 911
 912 2024-01-29  François Dumont  <fdumont@gcc.gnu.org>
 913
 914         * doc/xml/manual/debug_mode.xml: Link against libstdc++exp.a to use
 915         _GLIBCXX_DEBUG_BACKTRACE macro.
 916
 917 2024-01-24  Huanghui Nie  <nnnjkk@gmail.com>
 918             Théo Papadopoulo   <papadopoulo@gmail.com>
 919
 920         * include/bits/hashtable.h (_Hahstable<>::_M_remove_bucket_begin): Remove
 921         _M_before_begin check and cleanup implementation.
 922
 923 2024-01-22  Jonathan Wakely  <jwakely@redhat.com>
 924
 925         * testsuite/std/time/clock/file/io.cc: Fix expected result in
 926         assertion and call test_format() from main.
 927
 928 2024-01-21  Jonathan Wakely  <jwakely@redhat.com>
 929
 930         PR libstdc++/113500
 931         * include/bits/chrono_io.h (__formatter_chrono::_M_S): Fix
 932         printing of subseconds with floating-point rep.
 933         (__formatter_chrono::_M_format_to_ostream): Do not write
 934         time_point specializations directly to the ostream.
 935         (formatter<chrono::sys_time<D>, C>::parse): Do not allow an
 936         empty chrono-spec if the type fails to meet the constraints for
 937         writing to an ostream with operator<<.
 938         * testsuite/std/time/clock/file/io.cc: Check formatting
 939         non-integral times with empty chrono-specs.
 940         * testsuite/std/time/clock/gps/io.cc: Likewise.
 941         * testsuite/std/time/clock/utc/io.cc: Likewise.
 942         * testsuite/std/time/hh_mm_ss/io.cc: Likewise.
 943
 944 2024-01-21  Jonathan Wakely  <jwakely@redhat.com>
 945
 946         * include/bits/chrono.h (__file_clock::from_sys)
 947         (__file_clock::to_sys, __file_clock::_S_from_sys)
 948         (__file_clock::_S_to_sys): Use common_type for return type.
 949         * testsuite/std/time/clock/file/members.cc: Check round trip
 950         conversion for time with lower precision that seconds.
 951
 952 2024-01-21  Jonathan Wakely  <jwakely@redhat.com>
 953
 954         PR libstdc++/113512
 955         * include/std/format (__formatter_fp::format): Fix logic for
 956         alternate forms.
 957         * testsuite/std/format/functions/format.cc: Check buggy cases of
 958         alternate forms with g presentation type.
 959
 960 2024-01-20  Marek Polacek  <polacek@redhat.com>
 961
 962         PR c++/111410
 963         * include/std/ranges: Add #pragma to disable -Wdangling-reference with
 964         std::ranges::views::__adaptor::operator|.
 965
 966 2024-01-19  Jonathan Wakely  <jwakely@redhat.com>
 967
 968         * include/std/format (_Spec::_M_parse_fill_and_align): Do not
 969         use CTAD for _Utf32_view.
 970
 971 2024-01-19  Jonathan Wakely  <jwakely@redhat.com>
 972
 973         PR libstdc++/108822
 974         * include/std/tuple (__glibcxx_no_dangling_refs) [C++17]: Fix
 975         wrong fold-operator.
 976         * testsuite/20_util/tuple/dangling_ref.cc: Check tuples with one
 977         element and three elements. Check allocator-extended
 978         constructors.
 979
 980 2024-01-19  Patrick Palka  <ppalka@redhat.com>
 981
 982         * include/precompiled/stdc++.h [_GLIBCXX_HOSTED]: Include
 983         <print> and <text_encoding> for C++23 and C++26 respectively.
 984
 985 2024-01-18  Patrick Palka  <ppalka@redhat.com>
 986
 987         * include/bits/stl_pair.h [__cplusplus > 202002L]:
 988         Guard P2321R2 changes with __glibcxx_ranges_zip instead.
 989
 990 2024-01-18  Patrick Palka  <ppalka@redhat.com>
 991
 992         * include/std/tuple [__cplusplus > 202002L]: Guard P2321R2
 993         changes with __cpp_lib_ranges_zip instead.
 994
 995 2024-01-18  Patrick Palka  <ppalka@redhat.com>
 996
 997         PR libstdc++/109536
 998         * include/debug/safe_base.h (_Safe_sequence_base::_M_swap):
 999         Remove _GLIBCXX20_CONSTEXPR from non-inline member function.
1000         * include/debug/safe_iterator.h
1001         (_GLIBCXX20_CONSTEXPR_NON_LITERAL_SCOPE_BEGIN): Define.
1002         (_GLIBCXX20_CONSTEXPR_NON_LITERAL_SCOPE_END): Define.
1003         (_Safe_iterator::operator=): Use them around the code path that
1004         defines a variable of type __gnu_cxx::__scoped_lock.
1005         (_Safe_iterator::operator++): Likewise.
1006         (_Safe_iterator::operator--): Likewise.
1007         (_Safe_iterator::operator+=): Likewise.
1008         (_Safe_iterator::operator-=): Likewise.
1009         * testsuite/23_containers/vector/element_access/constexpr.cc
1010         (test_iterators): Test more iterator operations.
1011         * testsuite/23_containers/vector/bool/element_access/constexpr.cc
1012         (test_iterators): Likewise.
1013         * testsuite/std/ranges/adaptors/all.cc (test08) [_GLIBCXX_DEBUG]:
1014         Remove.
1015
1016 2024-01-18  Jonathan Wakely  <jwakely@redhat.com>
1017
1018         * include/bits/unicode.h (__charset_alias_match): Initialize
1019         __var_a and __var_b.
1020
1021 2024-01-18  Jonathan Wakely  <jwakely@redhat.com>
1022
1023         PR libstdc++/113450
1024         * testsuite/std/format/functions/format.cc: Use signed char
1025         instead of int8_t.
1026
1027 2024-01-17  Jonathan Wakely  <jwakely@redhat.com>
1028
1029         PR libstdc++/113318
1030         * acinclude.m4 (GLIBCXX_CONFIGURE): Add c++26 directory.
1031         (GLIBCXX_CHECK_TEXT_ENCODING): Define.
1032         * config.h.in: Regenerate.
1033         * configure: Regenerate.
1034         * configure.ac: Use GLIBCXX_CHECK_TEXT_ENCODING.
1035         * include/Makefile.am: Add new headers.
1036         * include/Makefile.in: Regenerate.
1037         * include/bits/locale_classes.h (locale::encoding): Declare new
1038         member function.
1039         * include/bits/unicode.h (__charset_alias_match): New function.
1040         * include/bits/text_encoding-data.h: New file.
1041         * include/bits/version.def (text_encoding): Define.
1042         * include/bits/version.h: Regenerate.
1043         * include/std/text_encoding: New file.
1044         * src/Makefile.am: Add new subdirectory.
1045         * src/Makefile.in: Regenerate.
1046         * src/c++26/Makefile.am: New file.
1047         * src/c++26/Makefile.in: New file.
1048         * src/c++26/text_encoding.cc: New file.
1049         * src/experimental/Makefile.am: Include c++26 convenience
1050         library.
1051         * src/experimental/Makefile.in: Regenerate.
1052         * python/libstdcxx/v6/printers.py (StdTextEncodingPrinter): New
1053         printer.
1054         * scripts/gen_text_encoding_data.py: New file.
1055         * testsuite/22_locale/locale/encoding.cc: New test.
1056         * testsuite/ext/unicode/charset_alias_match.cc: New test.
1057         * testsuite/std/text_encoding/cons.cc: New test.
1058         * testsuite/std/text_encoding/members.cc: New test.
1059         * testsuite/std/text_encoding/requirements.cc: New test.
1060
1061 2024-01-17  Jonathan Wakely  <jwakely@redhat.com>
1062
1063         * include/bits/unicode.h (_Grapheme_cluster_view): Require view.
1064         Do not use CTAD for _Utf32_view.
1065         (__format_width, __truncate): Do not use CTAD.
1066         (enable_borrowed_range<_Utf_view<T, R>>): Define specialization.
1067         (enable_borrowed_range<_Grapheme_cluster_view<R>>): Likewise.
1068
1069 2024-01-17  Patrick Palka  <ppalka@redhat.com>
1070
1071         * include/std/ranges (views::_CartesianProduct::operator()):
1072         Adjust identity case as per P2540R1.
1073         * testsuite/std/ranges/cartesian_product/1.cc (test01):
1074         Adjust expected result of the identity case.
1075
1076 2024-01-15  Patrick Palka  <ppalka@redhat.com>
1077
1078         * include/std/variant (__detail::__variant::_Variadic_union):
1079         Add bool __trivially_destructible template parameter.
1080         (__detail::__variant::_Variadic_union::~_Variadic_union):
1081         Use __trivially_destructible in constraints instead.
1082         (__detail::__variant::_Variant_storage): Pass
1083         __trivially_destructible value to _Variadic_union.
1084
1085 2024-01-15  Patrick Palka  <ppalka@redhat.com>
1086
1087         * include/bits/stl_iterator.h (const_iterator): Define conversion
1088         operators as per P2836R1.
1089         * include/bits/version.def (ranges_as_const): Update value.
1090         * include/bits/version.h: Regenerate.
1091         * testsuite/24_iterators/const_iterator/1.cc (test04): New test.
1092         * testsuite/std/ranges/adaptors/as_const/1.cc: Adjust expected
1093         value of __cpp_lib_ranges_as_const.
1094         * testsuite/std/ranges/version_c++23.cc: Likewise.
1095
1096 2024-01-15  Jonathan Wakely  <jwakely@redhat.com>
1097
1098         PR libstdc++/108822
1099         * include/std/tuple (__assignable, __is_nothrow_assignable):
1100         Move pre-C++20 definitions adjacent to their use.
1101
1102 2024-01-15  Jonathan Wakely  <jwakely@redhat.com>
1103
1104         PR testsuite/113366
1105         * include/std/format (basic_format_arg): Use __formattable
1106         variable template instead of __format::__formattable_with
1107         concept.
1108
1109 2024-01-15  Jonathan Wakely  <jwakely@redhat.com>
1110
1111         * src/c++20/tzdata.zi: Import new file from 2023d release.
1112         * src/c++20/tzdb.cc (tzdb_list::_Node::_S_read_leap_seconds)
1113         Update expiry date for leap seconds list.
1114
1115 2024-01-13  Jonathan Wakely  <jwakely@redhat.com>
1116
1117         PR libstdc++/108822
1118         * include/std/tuple (tuple): Add checks for dangling references.
1119         Reimplement constraints and constant expressions using C++20
1120         features.
1121         * include/std/type_traits [C++20]
1122         (__is_implicitly_default_constructible_v): Define.
1123         (__is_implicitly_default_constructible): Use variable template.
1124         * testsuite/20_util/tuple/dangling_ref.cc: New test.
1125
1126 2024-01-13  Patrick Palka  <ppalka@redhat.com>
1127
1128         PR libstdc++/108827
1129         PR libstdc++/111327
1130         * include/bits/version.def (bind_back): Define.
1131         * include/bits/version.h: Regenerate.
1132         * include/std/functional (_Bind_back): Define for C++23.
1133         (bind_back): Likewise.
1134         * testsuite/20_util/function_objects/bind_back/1.cc: New test
1135         (adapted from corresponding bind_front test).
1136         * testsuite/20_util/function_objects/bind_back/111327.cc: Likewise.
1137
1138 2024-01-13  Patrick Palka  <ppalka@redhat.com>
1139
1140         * include/std/functional (_Bind_front): Remove =default special
1141         member function declarations.
1142         (_Bind_front::operator()): Implement using C++23 deducing this
1143         when available.
1144         * testsuite/20_util/function_objects/bind_front/111327.cc:
1145         Adjust testcase to expect better errors in C++23 mode.
1146
1147 2024-01-13  Patrick Palka  <ppalka@redhat.com>
1148
1149         * include/std/ranges (views::__adaptor::operator|): Perform
1150         perfect forwarding of arguments.
1151         (views::__adaptor::_RangeAdaptor::operator()): Pass dummy
1152         first argument to _Partial.
1153         (views::__adaptor::_Partial::_Partial): Likewise.  Add dummy
1154         first parameter.
1155         (views::__adaptor::_Pipe::_Pipe): Perform perfect forwarding
1156         of arguments.
1157         (to): Pass dummy first argument to _Partial.
1158
1159 2024-01-13  Jonathan Wakely  <jwakely@redhat.com>
1160
1161         PR libstdc++/107466
1162         * include/bits/random.tcc (subtract_with_carry_engine::seed):
1163         Implement proposed resolution of LWG 4014.
1164         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
1165         line number.
1166         * testsuite/26_numerics/random/subtract_with_carry_engine/cons/lwg3809.cc:
1167         Check for expected result of 64-bit engine with seed that
1168         doesn't fit in 32-bits.
1169
1170 2024-01-12  Jonathan Wakely  <jwakely@redhat.com>
1171
1172         PR libstdc++/113320
1173         * include/std/format (__format::_Runtime_format_string): Add
1174         constructor and disable copy operations.
1175         (basic_format_string(_Runtime_format_string)): Add noexcept and
1176         take parameter by value not rvalue reference.
1177         (runtime_format): Add noexcept.
1178         * testsuite/std/format/runtime_format.cc: Check noexcept. Check
1179         that construction is only possible from prvalues, not xvalues.
1180
1181 2024-01-12  Jonathan Wakely  <jwakely@redhat.com>
1182
1183         PR libstdc++/105505
1184         * include/bits/stl_pair.h (pair::pair(U1&&, U2&&)) [C++23]: Add
1185         default template arguments, as per P1951R1.
1186         * testsuite/20_util/pair/cons/default_tmpl_args.cc: New test.
1187
1188 2024-01-12  Jonathan Wakely  <jwakely@redhat.com>
1189
1190         * include/std/format (__format::_Arg_store): Fix PR number in
1191         comment. Simplify preprocessor code.
1192
1193 2024-01-11  Jonathan Wakely  <jwakely@redhat.com>
1194
1195         * doc/xml/manual/evolution.xml: Fix spelling.
1196         * doc/html/manual/api.html: Regenerate.
1197
1198 2024-01-11  Jonathan Wakely  <jwakely@redhat.com>
1199
1200         * doc/xml/manual/evolution.xml: Document addition of
1201         libstdc++exp.a.
1202         * doc/html/*: Regenerate.
1203
1204 2024-01-11  Marcus Haehnel  <marcus.haehnel@kernkonzept.com>
1205
1206         * libsupc++/eh_unex_handler.cc: Adjust definition type to
1207         declaration.
1208
1209 2024-01-11  Michael Levine  <mlevine55@bloomberg.net>
1210
1211         * include/std/ranges (__glibcxx_want_ranges_iota): Remove
1212         duplicate definition.
1213
1214 2024-01-11  François Dumont  <fdumont@gcc.gnu.org>
1215
1216         PR libstdc++/112477
1217         * src/c++11/debug.cc
1218         (_Safe_iterator_base::_M_attach): Reset _M_version to 0 if attaching to null
1219         sequence.
1220         (_Safe_iterator_base::_M_attach_single): Likewise.
1221         (_Safe_local_iterator_base::_M_attach): Likewise.
1222         (_Safe_local_iterator_base::_M_attach_single): Likewise.
1223         * testsuite/23_containers/map/debug/112477.cc: New test case.
1224
1225 2024-01-11  Patrick Palka  <ppalka@redhat.com>
1226
1227         * include/bits/move.h (__like_t): Define in C++23 mode.
1228         * include/std/ranges (views::__adaptor::Partial::operator()):
1229         Implement using C++23 deducing this when available.
1230         (views::__adaptor::_Pipe::operator()): Likewise.
1231         * testsuite/std/ranges/adaptors/100577.cc: Adjust testcase to
1232         accept new "no match for call" errors issued in C++23 mode.
1233         * testsuite/std/ranges/adaptors/lazy_split_neg.cc: Likewise.
1234
1235 2024-01-11  Jonathan Wakely  <jwakely@redhat.com>
1236
1237         * python/libstdcxx/v6/printers.py (StdIntegralConstantPrinter):
1238         Add printer for std::integral_constant.
1239         * testsuite/libstdc++-prettyprinters/cxx11.cc: Test it.
1240
1241 2024-01-11  Jonathan Wakely  <jwakely@redhat.com>
1242
1243         PR libstdc++/113258
1244         * libsupc++/new_opa.cc: Prefer to use posix_memalign if
1245         available.
1246
1247 2024-01-11  Ken Matsui  <kmatsui@gcc.gnu.org>
1248
1249         * src/filesystem/ops-common.h (stat_type): Use using.
1250
1251 2024-01-11  Ken Matsui  <kmatsui@gcc.gnu.org>
1252
1253         PR libstdc++/113250
1254         * src/c++17/fs_ops.cc (fs::equivalent): Use || instead of &&.
1255         * src/filesystem/ops.cc (fs::equivalent): Likewise.
1256         * testsuite/27_io/filesystem/operations/equivalent.cc: Handle
1257         error codes.
1258         * testsuite/experimental/filesystem/operations/equivalent.cc:
1259         Likewise.
1260
1261 2024-01-11  Ken Matsui  <kmatsui@gcc.gnu.org>
1262
1263         * include/std/type_traits (is_compound): Do not use __not_.
1264         (is_compound_v): Use is_fundamental_v instead.
1265
1266 2024-01-11  Patrick Palka  <ppalka@redhat.com>
1267
1268         * include/bits/utility.h (_Nth_type): Use
1269         _GLIBCXX_USE_BUILTIN_TRAIT instead of __has_builtin.
1270
1271 2024-01-09  Jonathan Wakely  <jwakely@redhat.com>
1272
1273         * include/bits/unicode-data.h: Regenerate.
1274         * include/bits/unicode.h (_Utf_iterator::operator++()): Fix off
1275         by one error.
1276         (__incb_property): Add missing check for values before the
1277         first edge.
1278         (__is_extended_pictographic): Invert return values to fix
1279         copy&pasted logic.
1280         (_Grapheme_cluster_view::_Iterator): Remove second iterator
1281         member and find end of cluster lazily.
1282         * testsuite/ext/unicode/grapheme_view.cc: New test.
1283         * testsuite/ext/unicode/properties.cc: New test.
1284         * testsuite/ext/unicode/view.cc: New test.
1285
1286 2024-01-09  Andreas Schwab  <schwab@linux-m68k.org>
1287
1288         * scripts/extract_symvers.in: Require final colon to only match
1289         .dsynsym in the header of the dynamic symtab.
1290
1291 2024-01-09  Jonathan Wakely  <jwakely@redhat.com>
1292
1293         * include/bits/chrono_io.h (__formatter_chrono::_M_F): Simplify
1294         handling of string returned from std::format.
1295         (__formatter_chrono::_M_R_T): Likewise.
1296
1297 2024-01-08  Jonathan Wakely  <jwakely@redhat.com>
1298
1299         * include/bits/unicode.h (__null_sentinel): Remove.
1300         * testsuite/17_intro/names.cc: Add __null_sentinel.
1301
1302 2024-01-08  Jonathan Wakely  <jwakely@redhat.com>
1303
1304         * include/std/format (__format::_Runtime_format_string): Define
1305         new class template.
1306         (basic_format_string): Add non-consteval constructor for runtime
1307         format strings.
1308         (runtime_format): Define new function for C++26.
1309         * testsuite/std/format/runtime_format.cc: New test.
1310
1311 2024-01-08  Jonathan Wakely  <jwakely@redhat.com>
1312
1313         * include/bits/chrono_io.h (__formatter_chrono): Always use
1314         lvalue arguments to make_format_args.
1315         * include/std/format (make_format_args): Change parameter pack
1316         from forwarding references to lvalue references. Remove use of
1317         remove_reference_t which is now unnecessary.
1318         (format_to, formatted_size): Remove incorrect forwarding of
1319         arguments.
1320         * include/std/ostream (print): Remove forwarding of arguments.
1321         * include/std/print (print): Likewise.
1322         * testsuite/20_util/duration/io.cc: Use lvalues as arguments to
1323         make_format_args.
1324         * testsuite/std/format/arguments/args.cc: Likewise.
1325         * testsuite/std/format/arguments/lwg3810.cc: Likewise.
1326         * testsuite/std/format/functions/format.cc: Likewise.
1327         * testsuite/std/format/functions/vformat_to.cc: Likewise.
1328         * testsuite/std/format/string.cc: Likewise.
1329         * testsuite/std/time/day/io.cc: Likewise.
1330         * testsuite/std/time/month/io.cc: Likewise.
1331         * testsuite/std/time/weekday/io.cc: Likewise.
1332         * testsuite/std/time/year/io.cc: Likewise.
1333         * testsuite/std/time/year_month_day/io.cc: Likewise.
1334         * testsuite/std/format/arguments/args_neg.cc: New test.
1335
1336 2024-01-08  Jonathan Wakely  <jwakely@redhat.com>
1337
1338         * include/Makefile.am: Add new headers.
1339         * include/Makefile.in: Regenerate.
1340         * include/bits/unicode.h: New file.
1341         * include/bits/unicode-data.h: New file.
1342         * include/std/format: Include <bits/unicode.h>.
1343         (__literal_encoding_is_utf8): Move to <bits/unicode.h>.
1344         (_Spec::_M_fill): Change type to char32_t.
1345         (_Spec::_M_parse_fill_and_align): Read a Unicode scalar value
1346         instead of a single character.
1347         (__write_padded): Change __fill_char parameter to char32_t and
1348         encode it into the output.
1349         (__formatter_str::format): Use new __unicode::__field_width and
1350         __unicode::__truncate functions.
1351         * include/std/ostream: Adjust namespace qualification for
1352         __literal_encoding_is_utf8.
1353         * include/std/print: Likewise.
1354         * src/c++23/print.cc: Add [[unlikely]] attribute to error path.
1355         * testsuite/ext/unicode/view.cc: New test.
1356         * testsuite/std/format/functions/format.cc: Add missing examples
1357         from the standard demonstrating alignment with non-ASCII
1358         characters. Add examples checking correct handling of extended
1359         grapheme clusters.
1360
1361 2024-01-08  Jonathan Wakely  <jwakely@redhat.com>
1362
1363         * include/bits/version.def (format_uchar): Define.
1364         * include/bits/version.h: Regenerate.
1365         * include/std/format (formatter<C, C>::format): Check for
1366         _Pres_c and call _M_format_character directly. Cast C to its
1367         unsigned equivalent for formatting as an integer.
1368         (formatter<char, wchar_t>::format): Likewise.
1369         (basic_format_arg(T&)): Store char arguments as unsigned char
1370         for formatting to a wide string.
1371         * testsuite/std/format/functions/format.cc: Adjust test. Check
1372         formatting of
1373
1374 2024-01-07  Jonathan Wakely  <jwakely@redhat.com>
1375
1376         PR libstdc++/112997
1377         * libsupc++/unwind-cxx.h (__cxa_call_terminate): Change first
1378         parameter to void*.
1379
1380 2024-01-07  Jonathan Wakely  <jwakely@redhat.com>
1381
1382         * testsuite/20_util/variant/87619.cc: Remove dg-timeout-factor.
1383
1384 2024-01-07  Jonathan Wakely  <jwakely@redhat.com>
1385
1386         * include/std/type_traits (is_trivially_destructible_v): Use
1387         built-in directly when concepts are supported.
1388         * testsuite/20_util/is_trivially_destructible/value_v.cc: New
1389         test.
1390
1391 2024-01-06  Gwenole Beauchesne  <gb.devel@gmail.com>
1392
1393         * testsuite/tr1/8_c_compatibility/cinttypes/functions.cc: Use
1394         nonnull arguments to strtoimax() and wcstoimax() functions.
1395
1396 2024-01-05  Jonathan Wakely  <jwakely@redhat.com>
1397
1398         * src/c++17/fs_path.cc (path::_List::reserve): Limit maximum
1399         size and check for overflows in arithmetic.
1400         (path::operator/=(const path&)): Remove redundant exponential
1401         growth calculation.
1402
1403 2024-01-05  Martin Küttler  <martin.kuettler@kernkonzept.com>
1404
1405         * src/c++17/fs_path.cc (path::_List::reserve): Avoid
1406         floating-point arithmetic.
1407
1408 2024-01-05  Jonathan Wakely  <jwakely@redhat.com>
1409
1410         PR libstdc++/113241
1411         * include/std/type_traits (is_convertible_v): Guard use of
1412         built-in with preprocessor check.
1413
1414 2024-01-05  Jonathan Wakely  <jwakely@redhat.com>
1415
1416         PR libstdc++/113200
1417         * include/bits/char_traits.h (__gnu_cxx::char_traits::move): Use
1418         __builtin_constant_p to check for unrelated pointers that cannot
1419         be compared during constant evaluation.
1420         * testsuite/21_strings/char_traits/requirements/113200.cc: New
1421         test.
1422
1423 2024-01-05  Cassio Neri  <cassio.neri@gmail.com>
1424
1425         * include/std/chrono: Fix + and - for months and weekdays.
1426         * testsuite/std/time/month/1.cc: Add constexpr tests against overflow.
1427         * testsuite/std/time/month/2.cc: New test for extreme values.
1428         * testsuite/std/time/weekday/1.cc: Add constexpr tests against overflow.
1429         * testsuite/std/time/weekday/2.cc: New test for extreme values.
1430
1431 2024-01-05  Jonathan Wakely  <jwakely@redhat.com>
1432
1433         PR libstdc++/113099
1434         * include/bits/locale_classes.tcc (__try_use_facet): Use
1435         if-constexpr for C++11 and up.
1436
1437 2024-01-05  Ken Matsui  <kmatsui@gcc.gnu.org>
1438
1439         * include/std/type_traits: Use _GLIBCXX_USE_BUILTIN_TRAIT.
1440
1441 2024-01-04  Arsen Arsenović  <arsen@aarsen.me>
1442
1443         * include/std/generator (_Subyield_state::_M_jump_in): Fix typo
1444         reported by Will Hawkins <hawkinsw@obs.cr>.
1445
1446 2024-01-04  Arsen Arsenović  <arsen@aarsen.me>
1447
1448         * include/std/generator (_Stateless_alloc): Rename typename _A
1449         to _All.
1450
1451 2024-01-03  Patrick Palka  <ppalka@redhat.com>
1452
1453         PR testsuite/113175
1454         * testsuite/std/ranges/iota/max_size_type.cc (test02): Reduce
1455         'limit' to 100 from 1000 and adjust 'log2_limit' accordingly.
1456         (test03): Likewise.
1457
1458 \f
1459 Copyright (C) 2024 Free Software Foundation, Inc.
1460
1461 Copying and distribution of this file, with or without modification,
1462 are permitted in any medium without royalty provided the copyright
1463 notice and this notice are preserved.