libstdc++-v3/ChangeLog

   1 2024-04-08  Jonathan Wakely  <jwakely@redhat.com>
   2
   3         PR libstdc++/114519
   4         * include/bits/unicode.h (_Utf8_view) [!__cpp_char8_t]: Define
   5         using char instead of char8_t.
   6         * testsuite/ext/unicode/view.cc: Use u8""sv literals to create
   7         string views, instead of std::u8string_view.
   8
   9 2024-04-08  Jonathan Wakely  <jwakely@redhat.com>
  10
  11         * testsuite/20_util/integer_comparisons/equal_neg.cc: Use
  12         no-opts selector for errors that depend on -fchar8_t.
  13         * testsuite/20_util/integer_comparisons/greater_equal_neg.cc:
  14         Likewise.
  15         * testsuite/20_util/integer_comparisons/greater_neg.cc:
  16         Likewise.
  17         * testsuite/20_util/integer_comparisons/in_range_neg.cc:
  18         Likewise.
  19         * testsuite/20_util/integer_comparisons/less_equal_neg.cc:
  20         Likewise.
  21         * testsuite/20_util/integer_comparisons/less_neg.cc: Likewise.
  22         * testsuite/20_util/integer_comparisons/not_equal_neg.cc:
  23         Likewise.
  24         * testsuite/21_strings/basic_string/hash/hash_char8_t.cc: Skip
  25         if -fno-char8_t is used.
  26         * testsuite/21_strings/headers/cuchar/functions_std_cxx20.cc:
  27         Likewise.
  28         * testsuite/27_io/basic_ostream/inserters_character/char/deleted.cc:
  29         Likewise.
  30         * testsuite/27_io/basic_ostream/inserters_character/wchar_t/deleted.cc:
  31         Likewise.
  32         * testsuite/27_io/filesystem/path/factory/u8path-depr.cc: Use
  33         char for u8 literal if char8_t is not available.
  34         * testsuite/27_io/headers/iosfwd/synopsis.cc: Check
  35         __cpp_char8_t.
  36         * testsuite/29_atomics/atomic_integral/wait_notify.cc: Likewise.
  37         * testsuite/29_atomics/headers/atomic/types_std_c++20_neg.cc:
  38         Remove check for _GLIBCXX_USE_CHAR8_T.
  39
  40 2024-04-08  Jonathan Wakely  <jwakely@redhat.com>
  41
  42         * testsuite/20_util/from_chars/1_neg.cc: Add char8_t cases,
  43         using a struct of that name if -fno-char8_t is active.
  44         * testsuite/20_util/from_chars/1_c++20_neg.cc: Removed.
  45
  46 2024-04-03  Jonathan Wakely  <jwakely@redhat.com>
  47
  48         PR libstdc++/104606
  49         * include/std/optional (operator<=>(const optional<T>&, const U&)):
  50         Reverse order of three_way_comparable_with template arguments.
  51         * testsuite/20_util/optional/relops/104606.cc: New test.
  52
  53 2024-04-02  Jonathan Wakely  <jwakely@redhat.com>
  54
  55         PR libstdc++/114519
  56         * include/bits/unicode.h (_Utf8_view): Guard with check for
  57         char8_t being enabled.
  58         (__literal_encoding_is_unicode): Guard use of char8_t with check
  59         for it being enabled.
  60         * testsuite/std/format/functions/114519.cc: New test.
  61
  62 2024-04-02  Patrick Palka  <ppalka@redhat.com>
  63
  64         * include/std/ranges (ranges::__detail::_Empty): Rename to ...
  65         (ranges::__detail::_Absent): ... this.  Turn into a template
  66         parameterized by the absent type _Tp and discriminator _Disc.
  67         (ranges::__detail::__maybe_present_t): Add an optional
  68         discriminator parameter.
  69         (slide_view::_M_cached_begin): Pass a discriminator argument to
  70         __maybe_present_t.
  71         (slide_view::_M_cached_end): Likewise.
  72         * testsuite/std/ranges/adaptors/sizeof.cc: Verify the size of
  73         slide_view<V> is 3 instead 4 pointers.
  74
  75 2024-04-02  Jakub Jelinek  <jakub@redhat.com>
  76
  77         * acinclude.m4: Fix duplicated words; file file -> file can.
  78         * configure.host: Fix duplicated words; the the -> the.
  79
  80 2024-03-29  Arsen Arsenović  <arsen@aarsen.me>
  81
  82         * testsuite/24_iterators/range_generators/01.cc: Drop GCC
  83         Runtime Library Exception.
  84         * testsuite/24_iterators/range_generators/02.cc: Drop GCC
  85         Runtime Library Exception.
  86         * testsuite/24_iterators/range_generators/copy.cc: Drop GCC
  87         Runtime Library Exception.
  88         * testsuite/24_iterators/range_generators/except.cc: Drop GCC
  89         Runtime Library Exception.
  90         * testsuite/24_iterators/range_generators/subrange.cc: Drop GCC
  91         Runtime Library Exception.
  92         * testsuite/24_iterators/range_generators/synopsis.cc: Drop GCC
  93         Runtime Library Exception.
  94         * testsuite/24_iterators/range_generators/iter_deref_return.cc:
  95         Drop GCC Runtime Library Exception from the "You should have
  96         received a copy" paragraph.
  97
  98 2024-03-27  Matthias Kretz  <m.kretz@gsi.de>
  99
 100         * include/experimental/bits/simd_x86.h (_S_masked_unary):
 101         Cast inputs < 16 bytes to 16 byte vectors before calling the
 102         right subtraction builtin. Before returning, truncate to the
 103         return vector type.
 104
 105 2024-03-27  Matthias Kretz  <m.kretz@gsi.de>
 106
 107         * include/experimental/bits/simd_x86.h (_S_masked_unary): Call
 108         the 4- and 8-byte variants of __builtin_ia32_subp[ds] without
 109         rounding direction argument.
 110
 111 2024-03-27  Srinivas Yadav Singanaboina  <vasu.srinivasvasu.14@gmail.com>
 112
 113         * include/Makefile.am: Add simd_sve.h.
 114         * include/Makefile.in: Add simd_sve.h.
 115         * include/experimental/bits/simd.h: Add new SveAbi.
 116         * include/experimental/bits/simd_builtin.h: Use
 117         __no_sve_deduce_t to support existing Neon Abi.
 118         * include/experimental/bits/simd_converter.h: Convert
 119         sequentially when sve is available.
 120         * include/experimental/bits/simd_detail.h: Define sve
 121         specific macro.
 122         * include/experimental/bits/simd_math.h: Fallback frexp
 123         to execute sequntially when sve is available, to handle
 124         fixed_size_simd return type that always uses sve.
 125         * include/experimental/simd: Include bits/simd_sve.h.
 126         * testsuite/experimental/simd/tests/bits/main.h: Enable
 127         testing for sve128, sve256, sve512.
 128         * include/experimental/bits/simd_sve.h: New file.
 129
 130 2024-03-26  Arsen Arsenović  <arsen@aarsen.me>
 131
 132         * include/std/generator (generator::_Iterator::operator*): Fix
 133         return type.
 134         * testsuite/24_iterators/range_generators/iter_deref_return.cc:
 135         New test.
 136
 137 2024-03-26  Arsen Arsenović  <arsen@aarsen.me>
 138
 139         * include/std/generator: Fix _V badname.
 140
 141 2024-03-26  Jonathan Wakely  <jwakely@redhat.com>
 142
 143         * testsuite/19_diagnostics/stacktrace/current.cc: Check for
 144         __cpp_lib_stacktrace instead of check for stacktrace ET.
 145         * testsuite/19_diagnostics/stacktrace/entry.cc: Likewise.
 146         * testsuite/19_diagnostics/stacktrace/hash.cc: Likewise.
 147         * testsuite/19_diagnostics/stacktrace/output.cc: Likewise.
 148         * testsuite/19_diagnostics/stacktrace/stacktrace.cc: Likewise.
 149         * testsuite/19_diagnostics/stacktrace/synopsis.cc: Likewise.
 150         * testsuite/19_diagnostics/stacktrace/version.cc: Likewise.
 151         * testsuite/23_containers/vector/debug/assign4_backtrace_neg.cc:
 152         Likewise.
 153         * testsuite/lib/libstdc++.exp (check_effective_target_stacktrace):
 154         Remove.
 155
 156 2024-03-26  Jonathan Wakely  <jwakely@redhat.com>
 157
 158         * testsuite/lib/dg-options.exp (dg-require-cpp-feature-test):
 159         New proc.
 160         * testsuite/lib/libstdc++.exp (check_v3_target_cpp_feature_test):
 161         New proc.
 162         * testsuite/std/text_encoding/cons.cc: Use new directive to skip
 163         the test if the __cpp_lib_text_encoding feature test macro is
 164         not defined.
 165         * testsuite/std/text_encoding/requirements.cc: Likewise.
 166
 167 2024-03-25  Jonathan Wakely  <jwakely@redhat.com>
 168
 169         * testsuite/std/text_encoding/requirements.cc: #undef the
 170         correct macro.
 171
 172 2024-03-23  Jonathan Wakely  <jwakely@redhat.com>
 173
 174         * include/std/format (formatter): Disable specializations that
 175         would allow sequences of narrow characters to be formatted as
 176         wchar_t without conversion, as per LWG 3944.
 177         * testsuite/std/format/formatter/lwg3944.cc: New test.
 178
 179 2024-03-23  Jonathan Wakely  <jwakely@redhat.com>
 180
 181         * include/bits/utility.h (__is_in_place_index_v): New variable
 182         template.
 183         * include/std/variant (__not_in_place_tag): Define in terms of
 184         variable templates not a class template.
 185
 186 2024-03-23  Jonathan Wakely  <jwakely@redhat.com>
 187
 188         PR libstdc++/114400
 189         * include/std/string_view (operator==): Use std::type_identity_t
 190         in C++20 instead of our own __type_identity_t.
 191
 192 2024-03-22  Jonathan Wakely  <jwakely@redhat.com>
 193
 194         PR libstdc++/114401
 195         * include/bits/hashtable.h (_Hashtable::_M_reinsert_node): Call
 196         release() on node handle instead of just zeroing its pointer.
 197         (_Hashtable::_M_reinsert_node_multi): Likewise.
 198         (_Hashtable::_M_merge_unique): Likewise.
 199         (_Hashtable::_M_merge_multi): Likewise.
 200         * include/bits/node_handle.h (_Node_handle_common::release()):
 201         New member function.
 202         (_Node_handle_common::_Optional_alloc::_M_empty): Remove
 203         unnecessary union member.
 204         (_Node_handle_common): Declare _Hashtable as a friend.
 205         * include/bits/stl_tree.h (_Rb_tree::_M_reinsert_node_unique):
 206         Call release() on node handle instead of just zeroing its
 207         pointer.
 208         (_Rb_tree::_M_reinsert_node_equal): Likewise.
 209         (_Rb_tree::_M_reinsert_node_hint_unique): Likewise.
 210         (_Rb_tree::_M_reinsert_node_hint_equal): Likewise.
 211         * testsuite/23_containers/multiset/modifiers/114401.cc: New test.
 212         * testsuite/23_containers/set/modifiers/114401.cc: New test.
 213         * testsuite/23_containers/unordered_multiset/modifiers/114401.cc: New test.
 214         * testsuite/23_containers/unordered_set/modifiers/114401.cc: New test.
 215
 216 2024-03-22  Jonathan Wakely  <jwakely@redhat.com>
 217
 218         PR libstdc++/113841
 219         * include/bits/allocator.h (allocator<cv T>): Add default
 220         constructor to partial specializations for cv-qualified types.
 221         * include/bits/stl_vector.h (_Vector_impl::_Vector_impl()):
 222         Constrain so that it's only present if the allocator is default
 223         constructible.
 224         * include/bits/stl_bvector.h (_Bvector_impl::_Bvector_impl()):
 225         Likewise.
 226         * testsuite/23_containers/vector/cons/113841.cc: New test.
 227
 228 2024-03-22  Jonathan Wakely  <jwakely@redhat.com>
 229
 230         * include/bits/stl_construct.h (destroy_at, construct_at): Guard
 231         with feature test macros instead of just __cplusplus.
 232
 233 2024-03-22  Jonathan Wakely  <jwakely@redhat.com>
 234
 235         * include/bits/version.def (generator, tuple_like): Move earlier
 236         in the file.
 237         * include/bits/version.h: Regenerate.
 238
 239 2024-03-22  Jonathan Wakely  <jwakely@redhat.com>
 240
 241         PR libstdc++/114394
 242         * include/std/functional (bind): Use __invoke_result_t instead
 243         of result_of::type.
 244         * include/std/type_traits (__invoke_result_t): New alias
 245         template.
 246         * testsuite/20_util/bind/ref_neg.cc: Adjust prune pattern.
 247
 248 2024-03-20  François Dumont  <fdumont@gcc.gnu.org>
 249
 250         * include/bits/version.def (null_iterators): Remove extra_cond.
 251         * include/bits/version.h: Regenerate.
 252
 253 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
 254
 255         PR libstdc++/114359
 256         * include/bits/random.tcc (binomial_distribution::param_type):
 257         Ensure arithmetic is done as type double.
 258         * testsuite/26_numerics/random/binomial_distribution/114359.cc: New test.
 259
 260 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
 261
 262         PR libstdc++/101228
 263         * include/pstl/parallel_backend_tbb.h (TBB_SUPPRESS_DEPRECATED_MESSAGES):
 264         Define before including <tbb/task.h> then undef afterwards.
 265
 266 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
 267
 268         * include/Makefile.am [MAINTAINER_MODE]: Add target to
 269         automatically update <bits/version.h>.
 270         * include/Makefile.in: Regenerate.
 271
 272 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
 273
 274         * doc/xml/manual/build_hacking.xml: Document generated files.
 275         Update list of convenience libraries and sub-directories under
 276         the src directory.
 277         * doc/html/*: Regenerate.
 278
 279 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
 280
 281         * include/bits/text_encoding-data.h: Regenerate.
 282         * include/bits/unicode-data.h: Regenerate.
 283         * scripts/gen_text_encoding_data.py: Fix header of generated
 284         file to name the correct script.
 285
 286 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
 287
 288         * testsuite/util/pstl/test_utils.h: Fix typos in comments.
 289
 290 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
 291
 292         PR libstdc++/114367
 293         * include/bits/stl_bvector.h (_M_allocate): Use allocator's
 294         construct function to begin lifetime of words.
 295
 296 2024-03-19  Iain Sandoe  <iain@sandoe.co.uk>
 297
 298         * testsuite/lib/dg-options.exp (atomic_link_flags): Emit a -B
 299         option for the path to the uninstalled libatomic.
 300
 301 2024-03-19  Iain Sandoe  <iain@sandoe.co.uk>
 302
 303         * testsuite/lib/libstdc++.exp (v3_target_compile): Instead of
 304         /dev/null, use a temporary file for test executables on Darwin.
 305
 306 2024-03-18  François Dumont  <fdumont@gcc.gnu.org>
 307
 308         * include/debug/safe_iterator.tcc (_Safe_iterator<>::_M_can_advance):
 309         Accept 0 offset advance on value-initialized iterator.
 310         * testsuite/23_containers/vector/debug/n3644.cc: New test case.
 311
 312 2024-03-18  François Dumont  <fdumont@gcc.gnu.org>
 313
 314         * include/debug/safe_local_iterator.tcc
 315         (_Safe_local_iterator::_M_valid_range): Add _M_value_initialized and
 316         _M_singular checks.
 317         * testsuite/23_containers/unordered_set/debug/114316.cc: New test case.
 318
 319 2024-03-17  François Dumont  <fdumont@gcc.gnu.org>
 320
 321         PR libstdc++/114316
 322         * include/debug/safe_iterator.tcc (_Safe_iterator<>::_M_valid_range):
 323         First check if both iterators are value-initialized before checking if
 324         singular.
 325         * testsuite/23_containers/set/debug/114316.cc: New test case.
 326         * testsuite/23_containers/vector/debug/114316.cc: New test case.
 327
 328 2024-03-14  Jonathan Wakely  <jwakely@redhat.com>
 329
 330         PR libstdc++/114325
 331         * include/std/format (_Scanner::_M_scan): Pass correct length to
 332         __to_chars_10_impl.
 333         * testsuite/std/format/functions/format.cc: Check negative
 334         integers with empty format-spec.
 335
 336 2024-03-14  Jonathan Wakely  <jwakely@redhat.com>
 337
 338         * include/bits/stl_algo.h (find_end, all_of, none_of, any_of)
 339         (find_if_not, is_partitioned, partition_point, remove)
 340         (remove_if, unique, lower_bound, upper_bound, equal_range)
 341         (binary_search, includes, is_sorted, is_sorted_until, minmax)
 342         (minmax_element, is_permutation, clamp, find_if, find_first_of)
 343         (adjacent_find, count, count_if, search, search_n, min_element)
 344         (max_element): Add nodiscard attribute.
 345         * include/bits/stl_algobase.h (min, max, lower_bound, equal)
 346         (lexicographical_compare, lexicographical_compare_three_way)
 347         (mismatch): Likewise.
 348         * include/bits/stl_heap.h (is_heap, is_heap_until): Likewise.
 349         * testsuite/25_algorithms/equal/debug/1_neg.cc: Add dg-warning.
 350         * testsuite/25_algorithms/equal/debug/2_neg.cc: Likewise.
 351         * testsuite/25_algorithms/equal/debug/3_neg.cc: Likewise.
 352         * testsuite/25_algorithms/find_first_of/concept_check_1.cc:
 353         Likewise.
 354         * testsuite/25_algorithms/is_permutation/2.cc: Likewise.
 355         * testsuite/25_algorithms/lexicographical_compare/71545.cc:
 356         Likewise.
 357         * testsuite/25_algorithms/lower_bound/33613.cc: Likewise.
 358         * testsuite/25_algorithms/lower_bound/debug/irreflexive.cc:
 359         Likewise.
 360         * testsuite/25_algorithms/lower_bound/debug/partitioned_neg.cc:
 361         Likewise.
 362         * testsuite/25_algorithms/lower_bound/debug/partitioned_pred_neg.cc:
 363         Likewise.
 364         * testsuite/25_algorithms/minmax/3.cc: Likewise.
 365         * testsuite/25_algorithms/search/78346.cc: Likewise.
 366         * testsuite/25_algorithms/search_n/58358.cc: Likewise.
 367         * testsuite/25_algorithms/unique/1.cc: Likewise.
 368         * testsuite/25_algorithms/unique/11480.cc: Likewise.
 369         * testsuite/25_algorithms/upper_bound/33613.cc: Likewise.
 370         * testsuite/25_algorithms/upper_bound/debug/partitioned_neg.cc:
 371         Likewise.
 372         * testsuite/25_algorithms/upper_bound/debug/partitioned_pred_neg.cc:
 373         Likewise.
 374         * testsuite/ext/concept_checks.cc: Likewise.
 375         * testsuite/ext/is_heap/47709.cc: Likewise.
 376         * testsuite/ext/is_sorted/cxx0x.cc: Likewise.
 377
 378 2024-03-14  xndcn  <xndchn@gmail.com>
 379
 380         * include/bits/atomic_base.h (__atomic_float::__atomic_float(Fp)):
 381         Clear padding.
 382         * testsuite/29_atomics/atomic_float/compare_exchange_padding.cc:
 383         New test.
 384
 385 2024-03-14  Jonathan Wakely  <jwakely@redhat.com>
 386
 387         PR libstdc++/66146
 388         * doc/xml/manual/status_cxx2011.xml: Remove mention of Linux in
 389         note about std::call_once.
 390         * doc/xml/manual/status_cxx2014.xml: Likewise.
 391         * doc/xml/manual/status_cxx2017.xml: Likewise.
 392         * doc/html/manual/status.html: Regenerate.
 393
 394 2024-03-14  Jonathan Wakely  <jwakely@redhat.com>
 395
 396         * doc/xml/manual/status_cxx2023.xml: Update C++23 status table.
 397         * doc/html/manual/status.html: Regenerate.
 398         * include/bits/version.def: Fix typo in comment.
 399
 400 2024-03-13  Jonathan Wakely  <jwakely@redhat.com>
 401
 402         * testsuite/libstdc++-prettyprinters/cxx11.cc: Move custom_cat
 403         to namespace scope.
 404
 405 2024-03-13  Jonathan Wakely  <jwakely@redhat.com>
 406
 407         * doc/xml/manual/debug.xml: Improve docs on debug builds and
 408         using ASan. Mention _GLIBCXX_ASSERTIONS. Reorder sections to put
 409         the most relevant ones first.
 410         * doc/xml/manual/using.xml: Add comma.
 411         * doc/html/*: Regenerate.
 412
 413 2024-03-13  Jonathan Wakely  <jwakely@redhat.com>
 414
 415         * doc/xml/manual/debug.xml: Document that concept checking might
 416         be removed in future.
 417         * doc/xml/manual/extensions.xml: Likewise.
 418
 419 2024-03-09  Jonathan Wakely  <jwakely@redhat.com>
 420
 421         PR libstdc++/114240
 422         * include/bits/chrono_io.h (_Parser::operator()): Assume
 423         hours(0) for a time_point, so that a time is not required
 424         to be present.
 425         * testsuite/std/time/parse/114240.cc: New test.
 426
 427 2024-03-09  Jonathan Wakely  <jwakely@redhat.com>
 428
 429         PR libstdc++/114279
 430         * include/bits/chrono_io.h (_Parser::_M_is_leap_second): New
 431         data member.
 432         (_Parser::_M_reserved): Reserve padding bits for future use.
 433         (_Parser::operator()): Set _M_is_leap_second if %S reads 60s.
 434         (from_stream): Only allow _M_is_leap_second for utc_time and
 435         local_time. Adjust arithmetic for utc_time so that leap seconds
 436         are preserved. Use time_point_cast to convert to a possibly
 437         lower-precision result type.
 438         * testsuite/std/time/parse.cc: Move to ...
 439         * testsuite/std/time/parse/parse.cc: ... here.
 440         * testsuite/std/time/parse/114279.cc: New test.
 441
 442 2024-03-07  Jonathan Wakely  <jwakely@redhat.com>
 443
 444         * include/bits/chrono_io.h (_Parser::operator()): Use
 445         std::from_chars to parse fractional seconds.
 446
 447 2024-03-07  Jonathan Wakely  <jwakely@redhat.com>
 448
 449         PR libstdc++/114244
 450         * include/bits/chrono_io.h (_Parser::operator()): Remove
 451         redundant uses of duration_cast. Use chrono::round to convert
 452         long double value to durations with integer representations.
 453         Check represenation type when deciding whether to skip parsing
 454         fractional seconds.
 455         * testsuite/20_util/duration/114244.cc: New test.
 456         * testsuite/20_util/duration/io.cc: Check that a floating-point
 457         duration with ratio<1> precision can be parsed.
 458
 459 2024-03-07  Jonathan Wakely  <jwakely@redhat.com>
 460
 461         PR libstdc++/114103
 462         * include/bits/version.def (atomic_lock_free_type_aliases): Add
 463         extra_cond to check for at least one always-lock-free type.
 464         * include/bits/version.h: Regenerate.
 465         * include/std/atomic (atomic_signed_lock_free)
 466         (atomic_unsigned_lock_free): Only use always-lock-free types.
 467         * src/c++20/tzdb.cc (time_zone::_Impl::RulesCounter): Don't use
 468         atomic counter if lock-free aliases aren't available.
 469         * testsuite/29_atomics/atomic/lock_free_aliases.cc: XFAIL for
 470         targets without lock-free word-size compare_exchange.
 471
 472 2024-03-07  Jonathan Wakely  <jwakely@redhat.com>
 473
 474         * include/std/chrono (__get_leap_second_info): Update expiry
 475         time for hardcoded list of leap seconds.
 476         * testsuite/std/time/tzdb/leap_seconds.cc: Update comment.
 477
 478 2024-03-07  Jonathan Wakely  <jwakely@redhat.com>
 479
 480         * testsuite/23_containers/deque/allocator/default_init.cc: Use
 481         std::memset instead of __builtin_memset.
 482         * testsuite/23_containers/forward_list/allocator/default_init.cc:
 483         Likewise.
 484         * testsuite/23_containers/list/allocator/default_init.cc:
 485         Likewise.
 486         * testsuite/23_containers/map/allocator/default_init.cc:
 487         Likewise.
 488         * testsuite/23_containers/set/allocator/default_init.cc:
 489         Likewise.
 490         * testsuite/23_containers/unordered_map/allocator/default_init.cc:
 491         Likewise.
 492         * testsuite/23_containers/unordered_set/allocator/default_init.cc:
 493         Likewise.
 494         * testsuite/23_containers/vector/allocator/default_init.cc:
 495         Likewise.
 496         * testsuite/23_containers/vector/bool/allocator/default_init.cc:
 497         Likewise.
 498         * testsuite/29_atomics/atomic/compare_exchange_padding.cc:
 499         Likewise.
 500         * testsuite/util/atomic/wait_notify_util.h: Likewise.
 501
 502 2024-03-07  Jonathan Wakely  <jwakely@redhat.com>
 503
 504         * include/std/format (_Arg_store::_S_make_elt): Add two
 505         static_assert checks to give more user-friendly error messages.
 506         * testsuite/lib/prune.exp (libstdc++-dg-prune): Prune another
 507         form of "in requirements with" note.
 508         * testsuite/std/format/arguments/args_neg.cc: Check for
 509         user-friendly diagnostics for non-formattable types.
 510         * testsuite/std/format/string_neg.cc: Likewise.
 511
 512 2024-03-04  Jonathan Wakely  <jwakely@redhat.com>
 513
 514         PR libstdc++/114147
 515         * include/std/tuple (tuple::tuple(allocator_arg_t, const Alloc&)):
 516         Add missing overload of allocator-extended default constructor.
 517         (tuple<T1,T2>::tuple(allocator_arg_t, const Alloc&)): Likewise.
 518         * testsuite/20_util/tuple/cons/114147.cc: New test.
 519
 520 2024-02-29  Jonathan Wakely  <jwakely@redhat.com>
 521
 522         * include/std/format (basic_format_arg::handle::__maybe_const_t):
 523         Fix condition to check if const type is formattable.
 524         (basic_format_arg::handle::handle(T&)): Remove redundant
 525         static_assert.
 526         * testsuite/std/format/formatter/basic.cc: New test.
 527
 528 2024-02-29  Jonathan Wakely  <jwakely@redhat.com>
 529
 530         PR libstdc++/113960
 531         * include/bits/stl_algobase.h (__is_byte_iter): Replace with ...
 532         (__memcmp_ordered_with): New concept.
 533         (lexicographical_compare_three_way): Use __memcmp_ordered_with
 534         instead of __is_byte_iter. Use correct length for memcmp.
 535         * testsuite/25_algorithms/lexicographical_compare_three_way/113960.cc:
 536         New test.
 537
 538 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
 539
 540         PR libstdc++/114152
 541         * include/experimental/scope (scope_exit scope_fail): Make
 542         destructor unconditionally noexcept.
 543         (scope_sucess): Fix noexcept-specifier.
 544         * testsuite/experimental/scopeguard/114152.cc: New test.
 545
 546 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
 547
 548         * doc/xml/manual/appendix_contributing.xml: Change URLs to use
 549         https.
 550         * doc/html/manual/*: Regenerate.
 551
 552 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
 553
 554         * doc/xml/manual/appendix_contributing.xml: Replace outdated
 555         info on ChangeLog entries.
 556         * doc/html/manual/appendix_contributing.html: Regenerate.
 557
 558 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
 559
 560         * include/bits/stl_bvector.h (vector<bool, A>::at): Add
 561         nodiscard.
 562         * include/bits/stl_vector.h (vector<T, A>::at): Likewise.
 563         (operator==, operator<=>, operator<, operator!=, operator>)
 564         (operator<=, operator>=): Likewise.
 565         * include/debug/vector (operator==, operator<=>, operator<)
 566         (operator!=, operator>, operator<=, operator>=): Likewise.
 567         * testsuite/23_containers/vector/nodiscard.cc: New test.
 568
 569 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
 570
 571         * include/bits/atomic_base.h (operator|, operator&): Add
 572         noexcept.
 573         * include/bits/fs_fwd.h (operator&, operator|, operator^)
 574         (operator~): Add nodiscard to overloads for copy_options, perms,
 575         perm_options, and directory_options.
 576         * include/bits/ios_base.h (operator&, operator|, operator^)
 577         (operator~): Add nodiscard and noexcept to overloads for
 578         _Ios_Fmtflags, _Ios_Openmode, and _Ios_Iostate.
 579         (operator|=, operator&=, operator^=): Add constexpr for C++14.
 580         * include/bits/regex_constants.h (operator&, operator|, operator^)
 581         (operator~): Add nodiscard and noexcept to overloads for
 582         syntax_option_type and match_flag_type.
 583         (operator|=, operator&=, operator^=): Add noexcept.
 584         * include/std/charconv (operator&, operator|, operator^)
 585         (operator~): Add nodiscard to overloads for chars_format.
 586         * include/std/future (operator&, operator|, operator^)
 587         (operator~): Add nodiscard for overloads for launch.
 588         (operator&=, operator|=, operator^=): Add constexpr for C++14.
 589         * include/experimental/bits/fs_fwd.h  (operator&, operator|)
 590         (operator^, operator~): Add nodiscard to overloads for
 591         copy_options, perms, and directory_options.
 592         * testsuite/27_io/ios_base/types/fmtflags/bitmask_operators.cc:
 593         Add dg-warning for nodiscard warnings.
 594         * testsuite/27_io/ios_base/types/iostate/bitmask_operators.cc:
 595         Likewise.
 596         * testsuite/27_io/ios_base/types/openmode/bitmask_operators.cc:
 597         Likewise.
 598         * testsuite/27_io/filesystem/operations/bitmask_types.cc:
 599         New test.
 600
 601 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
 602
 603         * testsuite/27_io/basic_ostream/print/1.cc: Check error
 604         handling.
 605         * testsuite/27_io/print/1.cc: Likewise.
 606
 607 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
 608
 609         * include/std/ostream (vprint_unicode) [__CYGWIN__]: Use POSIX
 610         code path for Cygwin instead of Windows.
 611         * include/std/print (vprint_unicode) [__CYGWIN__]: Likewise.
 612         * testsuite/27_io/basic_ostream/print/1.cc: Only add -lstdc++exp
 613         for *-*-mingw* targets.
 614         * testsuite/27_io/print/1.cc: Likewise.
 615
 616 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
 617
 618         * include/bits/alloc_traits.h: Include <bits/stl_iterator.h> for
 619         __make_move_if_noexcept_iterator.
 620
 621 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
 622
 623         * include/std/stacktrace: Add nodiscard attribute to all
 624         functions without side effects.
 625
 626 2024-02-20  François Dumont  <fdumont@gcc.gnu.org>
 627
 628         * include/bits/stl_algobase.h (std::__niter_wrap): Add a call to
 629         std::__niter_base on res iterator.
 630
 631 2024-02-19  Iain Sandoe  <iain@sandoe.co.uk>
 632             Jonathan Wakely  <jwakely@redhat.com>
 633
 634         PR target/112397
 635         * configure: Regenerate.
 636         * configure.ac: Detect if we are building for Darwin.
 637         * libsupc++/Makefile.am: If we are building for Darwin, then
 638         suppress hot/cold partitioning for the array allocators.
 639         * libsupc++/Makefile.in: Regenerated.
 640
 641 2024-02-17  François Dumont  <fdumont@gcc.gnu.org>
 642
 643         * include/bits/stl_algobase.h (std::__niter_base): Redefine the overload
 644         definitions for __gnu_debug::_Safe_iterator.
 645         * include/debug/safe_iterator.tcc (std::__niter_base): Adapt declarations.
 646
 647 2024-02-16  Jonathan Wakely  <jwakely@redhat.com>
 648
 649         PR libstdc++/87744
 650         PR libstdc++/113961
 651         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
 652         line number.
 653
 654 2024-02-16  Jonathan Wakely  <jwakely@redhat.com>
 655
 656         PR libstdc++/87744
 657         PR libstdc++/113931
 658         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
 659         line number.
 660
 661 2024-02-16  Jonathan Wakely  <jwakely@redhat.com>
 662
 663         * doc/xml/manual/debug_mode.xml: Update docs for backtraces.
 664         * doc/html/manual/debug_mode_using.html: Regenerate.
 665
 666 2024-02-16  Jonathan Wakely  <jwakely@redhat.com>
 667
 668         * doc/xml/manual/test.xml: Fix spelling of <envar> elements.
 669         * doc/html/manual/test.html: Regenerate.
 670
 671 2024-02-15  Jonathan Wakely  <jwakely@redhat.com>
 672
 673         PR libstdc++/113806
 674         * include/std/bitset (bitset::operator>>=): Remove redundant
 675         call to _M_do_sanitize.
 676
 677 2024-02-15  Jonathan Wakely  <jwakely@redhat.com>
 678
 679         PR libstdc++/113807
 680         * include/std/bitset (bitset::set()): Use memset instead of a
 681         loop over the individual words.
 682
 683 2024-02-15  Jonathan Wakely  <jwakely@redhat.com>
 684
 685         PR libstdc++/113811
 686         * include/bits/stl_algo.h (__rotate): Use unsigned values for
 687         division.
 688
 689 2024-02-15  Jonathan Wakely  <jwakely@redhat.com>
 690
 691         PR libstdc++/99117
 692         * include/std/valarray (valarray::operator=(const _Expr&)):
 693         Use loop to copy instead of __valarray_copy with _Array.
 694         * testsuite/26_numerics/valarray/99117.cc: New test.
 695
 696 2024-02-15  Jonathan Wakely  <jwakely@redhat.com>
 697
 698         * src/c++20/tzdata.zi: Import new file from 2024a release.
 699         * src/c++20/tzdb.cc (tzdb_list::_Node::_S_read_leap_seconds)
 700         Update expiry date for leap seconds list.
 701
 702 2024-02-15  Jonathan Wakely  <jwakely@redhat.com>
 703
 704         PR libstdc++/87744
 705         * include/bits/random.h [!__SIZEOF_INT128__] (_Select_uint_least_t):
 706         Define specialization for 64-bit generators with
 707         non-power-of-two modulus and large constants.
 708         (__mod): Use if constexpr unconditionally.
 709         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
 710         line number.
 711         * testsuite/26_numerics/random/linear_congruential_engine/87744.cc:
 712         New test.
 713
 714 2024-02-14  Gerald Pfeifer  <gerald@pfeifer.com>
 715
 716         * doc/xml/manual/status_cxx2023.xml: Fix C++ item p2442 to be
 717         version 1.
 718         * doc/html/manual/status.html: Regenerate.
 719
 720 2024-02-12  Paul Keir  <paul.keir@uws.ac.uk>
 721
 722         PR libstdc++/113294
 723         * include/bits/basic_string.h (basic_string::operator=): Use
 724         _M_use_local_data() instead of _M_local_buf on the moved-from
 725         string.
 726         * testsuite/21_strings/basic_string/modifiers/constexpr.cc
 727         (test_move): New test.
 728
 729 2024-02-09  Ken Matsui  <kmatsui@gcc.gnu.org>
 730
 731         * include/bits/c++config (_GLIBCXX_HAVE_BUILTIN_IS_SAME):
 732         Removed.
 733         * include/std/type_traits (is_same): Use
 734         _GLIBCXX_USE_BUILTIN_TRAIT instead of
 735         _GLIBCXX_HAVE_BUILTIN_IS_SAME.
 736         (is_same_v): Likewise.
 737
 738 2024-02-08  Jonathan Wakely  <jwakely@redhat.com>
 739
 740         * include/bits/shared_ptr_atomic.h: Fix typo in comment.
 741
 742 2024-02-08  Jonathan Wakely  <jwakely@redhat.com>
 743
 744         PR libstdc++/100147
 745         * include/bits/gslice.h (operator=): Add comment about lack of
 746         self-assignment check.
 747
 748 2024-02-08  Jonathan Wakely  <jwakely@redhat.com>
 749
 750         * include/tr2/type_traits (bases, direct_bases): Use
 751         __has_builtin to check if required built-ins are supported.
 752
 753 2024-02-07  Patrick Palka  <ppalka@redhat.com>
 754
 755         PR testsuite/113710
 756         PR c++/113814
 757         * include/bits/stl_pair.h (tuple_element): Add forward
 758         declaration of the partial specialization for tuple.
 759
 760 2024-02-06  Torbjörn SVENSSON  <torbjorn.svensson@foss.st.com>
 761
 762         * testsuite/lib/libstdc++.exp: Use "nul" for Windows, "/dev/null"
 763         for other environments.
 764
 765 2024-02-04  Jonathan Wakely  <jwakely@redhat.com>
 766
 767         * include/std/format (__format::_Spec::_M_reserved): Define new
 768         bit-field members to reserve padding bits for future extensions.
 769
 770 2024-02-04  Jonathan Wakely  <jwakely@redhat.com>
 771
 772         * src/experimental/Makefile.am: Use libstdc++fsconvenience.a
 773         instead of libstdc++fs.a.
 774         * src/experimental/Makefile.in: Regenerate.
 775         * src/filesystem/Makefile.am: Build libstdc++fsconvenience.a as
 776         well.
 777         * src/filesystem/Makefile.in: Regenerate.
 778
 779 2024-02-04  Jonathan Wakely  <jwakely@redhat.com>
 780
 781         * include/bits/text_encoding-data.h: Regenerate.
 782         * include/bits/unicode-data.h: Regenerate.
 783         * scripts/gen_text_encoding_data.py: Add copyright and license
 784         text to the output.
 785
 786 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
 787
 788         PR libstdc++/113335
 789         * include/bits/std_function.h (__function_guide_helper): Add
 790         partial specialization for explicit object member functions, as
 791         per LWG 3617.
 792         * testsuite/20_util/function/cons/deduction_c++23.cc: Check
 793         explicit object member functions.
 794         * testsuite/30_threads/packaged_task/cons/deduction_c++23.cc:
 795         Likewise.
 796
 797 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
 798
 799         * testsuite/17_intro/names.cc [_AIX]: Undefine "u".
 800
 801 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
 802
 803         * include/experimental/internet (network_v6::network): Define.
 804         (network_v6::hosts): Finish implementing.
 805         (network_v6::to_string): Do not concatenate std::string to
 806         arbitrary std::basic_string specialization.
 807         * testsuite/experimental/net/internet/network/v6/cons.cc: New
 808         test.
 809
 810 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
 811
 812         PR libstdc++/90276
 813         * testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: Fix
 814         comparison function to use less-than instead of equality.
 815
 816 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
 817
 818         PR libstdc++/90276
 819         * testsuite/util/pstl/test_utils.h (reverse_invoker): Do not use
 820         perfect forwarding for iterator arguments.
 821
 822 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
 823
 824         * include/std/string_view (basic_string_view(R&&)): Remove
 825         constraint that traits_type must be the same, as per LWG 3857.
 826         * testsuite/21_strings/basic_string_view/cons/char/range_c++20.cc:
 827         Explicit conversion between different specializations should be
 828         allowed.
 829         * testsuite/21_strings/basic_string_view/cons/wchar_t/range_c++20.cc:
 830         Likewise.
 831
 832 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
 833
 834         * include/std/syncstream (basic_osyncstream::operator=): Remove
 835         noexcept, as per LWG 3867.
 836
 837 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
 838
 839         * include/std/generator (promise_type::yield_value): Remove
 840         noexcept from fourth overload, as per LWG 3894.
 841
 842 2024-02-01  Patrick Palka  <ppalka@redhat.com>
 843
 844         PR libstdc++/113309
 845         PR libstdc++/109203
 846         * include/bits/ranges_util.h (__detail::__pair_like): Don't
 847         define in C++23 mode.
 848         (__detail::__pair_like_convertible_from): Adjust as per P2165R4.
 849         (__detail::__is_subrange<subrange>): Moved from <ranges>.
 850         (__detail::__is_tuple_like_v<subrange>): Likewise.
 851         * include/bits/stl_iterator.h: Include <bits/utility.h> for
 852         C++23.
 853         (__different_from): Move to <concepts>.
 854         (__iter_key_t): Adjust for C++23 as per P2165R4.
 855         (__iter_val_t): Likewise.
 856         * include/bits/stl_pair.h (pair, array): Forward declare.
 857         (get): Forward declare all overloads relevant to P2165R4
 858         tuple-like constructors.
 859         (__is_tuple_v): Define for C++23.
 860         (__is_tuple_like_v): Define for C++23.
 861         (__tuple_like): Define for C++23 as per P2165R4.
 862         (__pair_like): Define for C++23 as per P2165R4.
 863         (__eligibile_tuple_like): Define for C++23.
 864         (__eligibile_pair_like): Define for C++23.
 865         (pair::_S_constructible_from_pair_like): Define for C++23.
 866         (pair::_S_convertible_from_pair_like): Define for C++23.
 867         (pair::_S_dangles_from_pair_like): Define for C++23.
 868         (pair::pair): Define overloads taking a tuple-like type for
 869         C++23 as per P2165R4.
 870         (pair::_S_assignable_from_tuple_like): Define for C++23.
 871         (pair::_S_const_assignable_from_tuple_like): Define for C++23.
 872         (pair::operator=): Define overloads taking a tuple-like type for
 873         C++23 as per P2165R4.
 874         * include/bits/utility.h (ranges::__detail::__is_subrange):
 875         Moved from <ranges>.
 876         * include/bits/version.def (tuple_like): Define for C++23.
 877         * include/bits/version.h: Regenerate.
 878         * include/std/concepts (__different_from): Moved from
 879         <bits/stl_iterator.h>.
 880         (ranges::__swap::__adl_swap): Clarify which __detail namespace.
 881         * include/std/map (__cpp_lib_tuple_like): Define C++23.
 882         * include/std/ranges (__detail::__is_subrange): Moved to
 883         <bits/utility.h>.
 884         (__detail::__is_subrange<subrange>): Moved to <bits/ranges_util.h>
 885         (__detail::__has_tuple_element): Adjust for C++23 as per P2165R4.
 886         (__detail::__tuple_or_pair): Remove as per P2165R4.  Replace all
 887         uses with plain tuple as per P2165R4.
 888         * include/std/tuple (__cpp_lib_tuple_like): Define for C++23.
 889         (__tuple_like_tag_t): Define for C++23.
 890         (__tuple_cmp): Forward declare for C++23.
 891         (_Tuple_impl::_Tuple_impl): Define overloads taking
 892         __tuple_like_tag_t and a tuple-like type for C++23.
 893         (_Tuple_impl::_M_assign): Likewise.
 894         (tuple::__constructible_from_tuple_like): Define for C++23.
 895         (tuple::__convertible_from_tuple_like): Define for C++23.
 896         (tuple::__dangles_from_tuple_like): Define for C++23.
 897         (tuple::tuple): Define overloads taking a tuple-like type for
 898         C++23 as per P2165R4.
 899         (tuple::__assignable_from_tuple_like): Define for C++23.
 900         (tuple::__const_assignable_from_tuple_like): Define for C++23.
 901         (tuple::operator=): Define overloads taking a tuple-like type
 902         for C++23 as per P2165R4.
 903         (tuple::__tuple_like_common_comparison_category): Define for C++23.
 904         (tuple::operator<=>): Define overload taking a tuple-like type
 905         for C++23 as per P2165R4.
 906         (array, get): Forward declarations moved to <bits/stl_pair.h>.
 907         (tuple_cat): Constrain with __tuple_like for C++23 as per P2165R4.
 908         (apply): Likewise.
 909         (make_from_tuple): Likewise.
 910         (__tuple_like_common_reference): Define for C++23.
 911         (basic_common_reference): Adjust as per P2165R4.
 912         (__tuple_like_common_type): Define for C++23.
 913         (common_type): Adjust as per P2165R4.
 914         * include/std/unordered_map (__cpp_lib_tuple_like): Define for
 915         C++23.
 916         * include/std/utility (__cpp_lib_tuple_like): Define for C++23.
 917         * testsuite/std/ranges/zip/1.cc (test01): Adjust to handle pair
 918         and 2-tuple interchangeably.
 919         (test05): New test.
 920         * testsuite/20_util/pair/p2165r4.cc: New test.
 921         * testsuite/20_util/tuple/p2165r4.cc: New test.
 922
 923 2024-02-01  Patrick Palka  <ppalka@redhat.com>
 924
 925         * include/bits/stl_pair.h (pair::_S_const_assignable): Define,
 926         factored out from ...
 927         (pair::operator=): ... the constraints of the const overloads.
 928
 929 2024-02-01  Jonathan Wakely  <jwakely@redhat.com>
 930
 931         * include/bits/version.tpl: Do not use def-file-line for each
 932         macro being defined.
 933         * include/bits/version.h: Regenerate.
 934
 935 2024-02-01  Jonathan Wakely  <jwakely@redhat.com>
 936
 937         * testsuite/25_algorithms/copy/debug/constexpr_neg.cc: Adjust
 938         dg-error pattern.
 939         * testsuite/25_algorithms/copy_backward/debug/constexpr_neg.cc:
 940         Likewise.
 941         * testsuite/25_algorithms/equal/debug/constexpr_neg.cc:
 942         Likewise.
 943         * testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_neg.cc:
 944         Likewise.
 945         * testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_pred_neg.cc:
 946         Likewise.
 947         * testsuite/25_algorithms/lower_bound/debug/constexpr_valid_range_neg.cc:
 948         Likewise.
 949         * testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_neg.cc:
 950         Likewise.
 951         * testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_pred_neg.cc:
 952         Likewise.
 953         * testsuite/25_algorithms/upper_bound/debug/constexpr_valid_range_neg.cc:
 954         Likewise.
 955
 956 2024-02-01  Jonathan Wakely  <jwakely@redhat.com>
 957
 958         * include/experimental/internet (network_v4::to_string()):
 959         Remove lambda and use of resize_and_overwrite.
 960
 961 2024-01-31  Jonathan Wakely  <jwakely@redhat.com>
 962
 963         * acinclude.m4 (GLIBCXX_CHECK_TEXT_ENCODING): Use <xlocale.h> if
 964         needed for newlocale.
 965         * configure: Regenerate.
 966         * src/c++26/text_encoding.cc: Use <xlocale.h>.
 967
 968 2024-01-31  Jonathan Wakely  <jwakely@redhat.com>
 969             Ewan Higgs  <ewan.higgs@gmail.com>
 970
 971         * include/bits/text_encoding-data.h: Regenerate.
 972         * scripts/gen_text_encoding_data.py: Add extra_aliases dict
 973         containing "ASCII".
 974         * testsuite/std/text_encoding/cons.cc: Check "ascii" is known.
 975
 976 2024-01-31  Jonathan Wakely  <jwakely@redhat.com>
 977
 978         * doc/xml/manual/using.xml: Update tables of supported headers.
 979         * doc/html/*: Regenerate.
 980
 981 2024-01-31  Jonathan Wakely  <jwakely@redhat.com>
 982
 983         * include/std/bitset (_Base_bitset::_M_do_to_ullong): Avoid
 984         -Wshift-count-overflow warning.
 985
 986 2024-01-30  Jonathan Wakely  <jwakely@redhat.com>
 987
 988         * testsuite/std/time/clock/gps/io.cc: Fix expected result in
 989         assertion and call test_format() from main.
 990
 991 2024-01-29  François Dumont  <fdumont@gcc.gnu.org>
 992
 993         * doc/xml/manual/debug_mode.xml: Link against libstdc++exp.a to use
 994         _GLIBCXX_DEBUG_BACKTRACE macro.
 995
 996 2024-01-24  Huanghui Nie  <nnnjkk@gmail.com>
 997             Théo Papadopoulo   <papadopoulo@gmail.com>
 998
 999         * include/bits/hashtable.h (_Hahstable<>::_M_remove_bucket_begin): Remove
1000         _M_before_begin check and cleanup implementation.
1001
1002 2024-01-22  Jonathan Wakely  <jwakely@redhat.com>
1003
1004         * testsuite/std/time/clock/file/io.cc: Fix expected result in
1005         assertion and call test_format() from main.
1006
1007 2024-01-21  Jonathan Wakely  <jwakely@redhat.com>
1008
1009         PR libstdc++/113500
1010         * include/bits/chrono_io.h (__formatter_chrono::_M_S): Fix
1011         printing of subseconds with floating-point rep.
1012         (__formatter_chrono::_M_format_to_ostream): Do not write
1013         time_point specializations directly to the ostream.
1014         (formatter<chrono::sys_time<D>, C>::parse): Do not allow an
1015         empty chrono-spec if the type fails to meet the constraints for
1016         writing to an ostream with operator<<.
1017         * testsuite/std/time/clock/file/io.cc: Check formatting
1018         non-integral times with empty chrono-specs.
1019         * testsuite/std/time/clock/gps/io.cc: Likewise.
1020         * testsuite/std/time/clock/utc/io.cc: Likewise.
1021         * testsuite/std/time/hh_mm_ss/io.cc: Likewise.
1022
1023 2024-01-21  Jonathan Wakely  <jwakely@redhat.com>
1024
1025         * include/bits/chrono.h (__file_clock::from_sys)
1026         (__file_clock::to_sys, __file_clock::_S_from_sys)
1027         (__file_clock::_S_to_sys): Use common_type for return type.
1028         * testsuite/std/time/clock/file/members.cc: Check round trip
1029         conversion for time with lower precision that seconds.
1030
1031 2024-01-21  Jonathan Wakely  <jwakely@redhat.com>
1032
1033         PR libstdc++/113512
1034         * include/std/format (__formatter_fp::format): Fix logic for
1035         alternate forms.
1036         * testsuite/std/format/functions/format.cc: Check buggy cases of
1037         alternate forms with g presentation type.
1038
1039 2024-01-20  Marek Polacek  <polacek@redhat.com>
1040
1041         PR c++/111410
1042         * include/std/ranges: Add #pragma to disable -Wdangling-reference with
1043         std::ranges::views::__adaptor::operator|.
1044
1045 2024-01-19  Jonathan Wakely  <jwakely@redhat.com>
1046
1047         * include/std/format (_Spec::_M_parse_fill_and_align): Do not
1048         use CTAD for _Utf32_view.
1049
1050 2024-01-19  Jonathan Wakely  <jwakely@redhat.com>
1051
1052         PR libstdc++/108822
1053         * include/std/tuple (__glibcxx_no_dangling_refs) [C++17]: Fix
1054         wrong fold-operator.
1055         * testsuite/20_util/tuple/dangling_ref.cc: Check tuples with one
1056         element and three elements. Check allocator-extended
1057         constructors.
1058
1059 2024-01-19  Patrick Palka  <ppalka@redhat.com>
1060
1061         * include/precompiled/stdc++.h [_GLIBCXX_HOSTED]: Include
1062         <print> and <text_encoding> for C++23 and C++26 respectively.
1063
1064 2024-01-18  Patrick Palka  <ppalka@redhat.com>
1065
1066         * include/bits/stl_pair.h [__cplusplus > 202002L]:
1067         Guard P2321R2 changes with __glibcxx_ranges_zip instead.
1068
1069 2024-01-18  Patrick Palka  <ppalka@redhat.com>
1070
1071         * include/std/tuple [__cplusplus > 202002L]: Guard P2321R2
1072         changes with __cpp_lib_ranges_zip instead.
1073
1074 2024-01-18  Patrick Palka  <ppalka@redhat.com>
1075
1076         PR libstdc++/109536
1077         * include/debug/safe_base.h (_Safe_sequence_base::_M_swap):
1078         Remove _GLIBCXX20_CONSTEXPR from non-inline member function.
1079         * include/debug/safe_iterator.h
1080         (_GLIBCXX20_CONSTEXPR_NON_LITERAL_SCOPE_BEGIN): Define.
1081         (_GLIBCXX20_CONSTEXPR_NON_LITERAL_SCOPE_END): Define.
1082         (_Safe_iterator::operator=): Use them around the code path that
1083         defines a variable of type __gnu_cxx::__scoped_lock.
1084         (_Safe_iterator::operator++): Likewise.
1085         (_Safe_iterator::operator--): Likewise.
1086         (_Safe_iterator::operator+=): Likewise.
1087         (_Safe_iterator::operator-=): Likewise.
1088         * testsuite/23_containers/vector/element_access/constexpr.cc
1089         (test_iterators): Test more iterator operations.
1090         * testsuite/23_containers/vector/bool/element_access/constexpr.cc
1091         (test_iterators): Likewise.
1092         * testsuite/std/ranges/adaptors/all.cc (test08) [_GLIBCXX_DEBUG]:
1093         Remove.
1094
1095 2024-01-18  Jonathan Wakely  <jwakely@redhat.com>
1096
1097         * include/bits/unicode.h (__charset_alias_match): Initialize
1098         __var_a and __var_b.
1099
1100 2024-01-18  Jonathan Wakely  <jwakely@redhat.com>
1101
1102         PR libstdc++/113450
1103         * testsuite/std/format/functions/format.cc: Use signed char
1104         instead of int8_t.
1105
1106 2024-01-17  Jonathan Wakely  <jwakely@redhat.com>
1107
1108         PR libstdc++/113318
1109         * acinclude.m4 (GLIBCXX_CONFIGURE): Add c++26 directory.
1110         (GLIBCXX_CHECK_TEXT_ENCODING): Define.
1111         * config.h.in: Regenerate.
1112         * configure: Regenerate.
1113         * configure.ac: Use GLIBCXX_CHECK_TEXT_ENCODING.
1114         * include/Makefile.am: Add new headers.
1115         * include/Makefile.in: Regenerate.
1116         * include/bits/locale_classes.h (locale::encoding): Declare new
1117         member function.
1118         * include/bits/unicode.h (__charset_alias_match): New function.
1119         * include/bits/text_encoding-data.h: New file.
1120         * include/bits/version.def (text_encoding): Define.
1121         * include/bits/version.h: Regenerate.
1122         * include/std/text_encoding: New file.
1123         * src/Makefile.am: Add new subdirectory.
1124         * src/Makefile.in: Regenerate.
1125         * src/c++26/Makefile.am: New file.
1126         * src/c++26/Makefile.in: New file.
1127         * src/c++26/text_encoding.cc: New file.
1128         * src/experimental/Makefile.am: Include c++26 convenience
1129         library.
1130         * src/experimental/Makefile.in: Regenerate.
1131         * python/libstdcxx/v6/printers.py (StdTextEncodingPrinter): New
1132         printer.
1133         * scripts/gen_text_encoding_data.py: New file.
1134         * testsuite/22_locale/locale/encoding.cc: New test.
1135         * testsuite/ext/unicode/charset_alias_match.cc: New test.
1136         * testsuite/std/text_encoding/cons.cc: New test.
1137         * testsuite/std/text_encoding/members.cc: New test.
1138         * testsuite/std/text_encoding/requirements.cc: New test.
1139
1140 2024-01-17  Jonathan Wakely  <jwakely@redhat.com>
1141
1142         * include/bits/unicode.h (_Grapheme_cluster_view): Require view.
1143         Do not use CTAD for _Utf32_view.
1144         (__format_width, __truncate): Do not use CTAD.
1145         (enable_borrowed_range<_Utf_view<T, R>>): Define specialization.
1146         (enable_borrowed_range<_Grapheme_cluster_view<R>>): Likewise.
1147
1148 2024-01-17  Patrick Palka  <ppalka@redhat.com>
1149
1150         * include/std/ranges (views::_CartesianProduct::operator()):
1151         Adjust identity case as per P2540R1.
1152         * testsuite/std/ranges/cartesian_product/1.cc (test01):
1153         Adjust expected result of the identity case.
1154
1155 2024-01-15  Patrick Palka  <ppalka@redhat.com>
1156
1157         * include/std/variant (__detail::__variant::_Variadic_union):
1158         Add bool __trivially_destructible template parameter.
1159         (__detail::__variant::_Variadic_union::~_Variadic_union):
1160         Use __trivially_destructible in constraints instead.
1161         (__detail::__variant::_Variant_storage): Pass
1162         __trivially_destructible value to _Variadic_union.
1163
1164 2024-01-15  Patrick Palka  <ppalka@redhat.com>
1165
1166         * include/bits/stl_iterator.h (const_iterator): Define conversion
1167         operators as per P2836R1.
1168         * include/bits/version.def (ranges_as_const): Update value.
1169         * include/bits/version.h: Regenerate.
1170         * testsuite/24_iterators/const_iterator/1.cc (test04): New test.
1171         * testsuite/std/ranges/adaptors/as_const/1.cc: Adjust expected
1172         value of __cpp_lib_ranges_as_const.
1173         * testsuite/std/ranges/version_c++23.cc: Likewise.
1174
1175 2024-01-15  Jonathan Wakely  <jwakely@redhat.com>
1176
1177         PR libstdc++/108822
1178         * include/std/tuple (__assignable, __is_nothrow_assignable):
1179         Move pre-C++20 definitions adjacent to their use.
1180
1181 2024-01-15  Jonathan Wakely  <jwakely@redhat.com>
1182
1183         PR testsuite/113366
1184         * include/std/format (basic_format_arg): Use __formattable
1185         variable template instead of __format::__formattable_with
1186         concept.
1187
1188 2024-01-15  Jonathan Wakely  <jwakely@redhat.com>
1189
1190         * src/c++20/tzdata.zi: Import new file from 2023d release.
1191         * src/c++20/tzdb.cc (tzdb_list::_Node::_S_read_leap_seconds)
1192         Update expiry date for leap seconds list.
1193
1194 2024-01-13  Jonathan Wakely  <jwakely@redhat.com>
1195
1196         PR libstdc++/108822
1197         * include/std/tuple (tuple): Add checks for dangling references.
1198         Reimplement constraints and constant expressions using C++20
1199         features.
1200         * include/std/type_traits [C++20]
1201         (__is_implicitly_default_constructible_v): Define.
1202         (__is_implicitly_default_constructible): Use variable template.
1203         * testsuite/20_util/tuple/dangling_ref.cc: New test.
1204
1205 2024-01-13  Patrick Palka  <ppalka@redhat.com>
1206
1207         PR libstdc++/108827
1208         PR libstdc++/111327
1209         * include/bits/version.def (bind_back): Define.
1210         * include/bits/version.h: Regenerate.
1211         * include/std/functional (_Bind_back): Define for C++23.
1212         (bind_back): Likewise.
1213         * testsuite/20_util/function_objects/bind_back/1.cc: New test
1214         (adapted from corresponding bind_front test).
1215         * testsuite/20_util/function_objects/bind_back/111327.cc: Likewise.
1216
1217 2024-01-13  Patrick Palka  <ppalka@redhat.com>
1218
1219         * include/std/functional (_Bind_front): Remove =default special
1220         member function declarations.
1221         (_Bind_front::operator()): Implement using C++23 deducing this
1222         when available.
1223         * testsuite/20_util/function_objects/bind_front/111327.cc:
1224         Adjust testcase to expect better errors in C++23 mode.
1225
1226 2024-01-13  Patrick Palka  <ppalka@redhat.com>
1227
1228         * include/std/ranges (views::__adaptor::operator|): Perform
1229         perfect forwarding of arguments.
1230         (views::__adaptor::_RangeAdaptor::operator()): Pass dummy
1231         first argument to _Partial.
1232         (views::__adaptor::_Partial::_Partial): Likewise.  Add dummy
1233         first parameter.
1234         (views::__adaptor::_Pipe::_Pipe): Perform perfect forwarding
1235         of arguments.
1236         (to): Pass dummy first argument to _Partial.
1237
1238 2024-01-13  Jonathan Wakely  <jwakely@redhat.com>
1239
1240         PR libstdc++/107466
1241         * include/bits/random.tcc (subtract_with_carry_engine::seed):
1242         Implement proposed resolution of LWG 4014.
1243         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
1244         line number.
1245         * testsuite/26_numerics/random/subtract_with_carry_engine/cons/lwg3809.cc:
1246         Check for expected result of 64-bit engine with seed that
1247         doesn't fit in 32-bits.
1248
1249 2024-01-12  Jonathan Wakely  <jwakely@redhat.com>
1250
1251         PR libstdc++/113320
1252         * include/std/format (__format::_Runtime_format_string): Add
1253         constructor and disable copy operations.
1254         (basic_format_string(_Runtime_format_string)): Add noexcept and
1255         take parameter by value not rvalue reference.
1256         (runtime_format): Add noexcept.
1257         * testsuite/std/format/runtime_format.cc: Check noexcept. Check
1258         that construction is only possible from prvalues, not xvalues.
1259
1260 2024-01-12  Jonathan Wakely  <jwakely@redhat.com>
1261
1262         PR libstdc++/105505
1263         * include/bits/stl_pair.h (pair::pair(U1&&, U2&&)) [C++23]: Add
1264         default template arguments, as per P1951R1.
1265         * testsuite/20_util/pair/cons/default_tmpl_args.cc: New test.
1266
1267 2024-01-12  Jonathan Wakely  <jwakely@redhat.com>
1268
1269         * include/std/format (__format::_Arg_store): Fix PR number in
1270         comment. Simplify preprocessor code.
1271
1272 2024-01-11  Jonathan Wakely  <jwakely@redhat.com>
1273
1274         * doc/xml/manual/evolution.xml: Fix spelling.
1275         * doc/html/manual/api.html: Regenerate.
1276
1277 2024-01-11  Jonathan Wakely  <jwakely@redhat.com>
1278
1279         * doc/xml/manual/evolution.xml: Document addition of
1280         libstdc++exp.a.
1281         * doc/html/*: Regenerate.
1282
1283 2024-01-11  Marcus Haehnel  <marcus.haehnel@kernkonzept.com>
1284
1285         * libsupc++/eh_unex_handler.cc: Adjust definition type to
1286         declaration.
1287
1288 2024-01-11  Michael Levine  <mlevine55@bloomberg.net>
1289
1290         * include/std/ranges (__glibcxx_want_ranges_iota): Remove
1291         duplicate definition.
1292
1293 2024-01-11  François Dumont  <fdumont@gcc.gnu.org>
1294
1295         PR libstdc++/112477
1296         * src/c++11/debug.cc
1297         (_Safe_iterator_base::_M_attach): Reset _M_version to 0 if attaching to null
1298         sequence.
1299         (_Safe_iterator_base::_M_attach_single): Likewise.
1300         (_Safe_local_iterator_base::_M_attach): Likewise.
1301         (_Safe_local_iterator_base::_M_attach_single): Likewise.
1302         * testsuite/23_containers/map/debug/112477.cc: New test case.
1303
1304 2024-01-11  Patrick Palka  <ppalka@redhat.com>
1305
1306         * include/bits/move.h (__like_t): Define in C++23 mode.
1307         * include/std/ranges (views::__adaptor::Partial::operator()):
1308         Implement using C++23 deducing this when available.
1309         (views::__adaptor::_Pipe::operator()): Likewise.
1310         * testsuite/std/ranges/adaptors/100577.cc: Adjust testcase to
1311         accept new "no match for call" errors issued in C++23 mode.
1312         * testsuite/std/ranges/adaptors/lazy_split_neg.cc: Likewise.
1313
1314 2024-01-11  Jonathan Wakely  <jwakely@redhat.com>
1315
1316         * python/libstdcxx/v6/printers.py (StdIntegralConstantPrinter):
1317         Add printer for std::integral_constant.
1318         * testsuite/libstdc++-prettyprinters/cxx11.cc: Test it.
1319
1320 2024-01-11  Jonathan Wakely  <jwakely@redhat.com>
1321
1322         PR libstdc++/113258
1323         * libsupc++/new_opa.cc: Prefer to use posix_memalign if
1324         available.
1325
1326 2024-01-11  Ken Matsui  <kmatsui@gcc.gnu.org>
1327
1328         * src/filesystem/ops-common.h (stat_type): Use using.
1329
1330 2024-01-11  Ken Matsui  <kmatsui@gcc.gnu.org>
1331
1332         PR libstdc++/113250
1333         * src/c++17/fs_ops.cc (fs::equivalent): Use || instead of &&.
1334         * src/filesystem/ops.cc (fs::equivalent): Likewise.
1335         * testsuite/27_io/filesystem/operations/equivalent.cc: Handle
1336         error codes.
1337         * testsuite/experimental/filesystem/operations/equivalent.cc:
1338         Likewise.
1339
1340 2024-01-11  Ken Matsui  <kmatsui@gcc.gnu.org>
1341
1342         * include/std/type_traits (is_compound): Do not use __not_.
1343         (is_compound_v): Use is_fundamental_v instead.
1344
1345 2024-01-11  Patrick Palka  <ppalka@redhat.com>
1346
1347         * include/bits/utility.h (_Nth_type): Use
1348         _GLIBCXX_USE_BUILTIN_TRAIT instead of __has_builtin.
1349
1350 2024-01-09  Jonathan Wakely  <jwakely@redhat.com>
1351
1352         * include/bits/unicode-data.h: Regenerate.
1353         * include/bits/unicode.h (_Utf_iterator::operator++()): Fix off
1354         by one error.
1355         (__incb_property): Add missing check for values before the
1356         first edge.
1357         (__is_extended_pictographic): Invert return values to fix
1358         copy&pasted logic.
1359         (_Grapheme_cluster_view::_Iterator): Remove second iterator
1360         member and find end of cluster lazily.
1361         * testsuite/ext/unicode/grapheme_view.cc: New test.
1362         * testsuite/ext/unicode/properties.cc: New test.
1363         * testsuite/ext/unicode/view.cc: New test.
1364
1365 2024-01-09  Andreas Schwab  <schwab@linux-m68k.org>
1366
1367         * scripts/extract_symvers.in: Require final colon to only match
1368         .dsynsym in the header of the dynamic symtab.
1369
1370 2024-01-09  Jonathan Wakely  <jwakely@redhat.com>
1371
1372         * include/bits/chrono_io.h (__formatter_chrono::_M_F): Simplify
1373         handling of string returned from std::format.
1374         (__formatter_chrono::_M_R_T): Likewise.
1375
1376 2024-01-08  Jonathan Wakely  <jwakely@redhat.com>
1377
1378         * include/bits/unicode.h (__null_sentinel): Remove.
1379         * testsuite/17_intro/names.cc: Add __null_sentinel.
1380
1381 2024-01-08  Jonathan Wakely  <jwakely@redhat.com>
1382
1383         * include/std/format (__format::_Runtime_format_string): Define
1384         new class template.
1385         (basic_format_string): Add non-consteval constructor for runtime
1386         format strings.
1387         (runtime_format): Define new function for C++26.
1388         * testsuite/std/format/runtime_format.cc: New test.
1389
1390 2024-01-08  Jonathan Wakely  <jwakely@redhat.com>
1391
1392         * include/bits/chrono_io.h (__formatter_chrono): Always use
1393         lvalue arguments to make_format_args.
1394         * include/std/format (make_format_args): Change parameter pack
1395         from forwarding references to lvalue references. Remove use of
1396         remove_reference_t which is now unnecessary.
1397         (format_to, formatted_size): Remove incorrect forwarding of
1398         arguments.
1399         * include/std/ostream (print): Remove forwarding of arguments.
1400         * include/std/print (print): Likewise.
1401         * testsuite/20_util/duration/io.cc: Use lvalues as arguments to
1402         make_format_args.
1403         * testsuite/std/format/arguments/args.cc: Likewise.
1404         * testsuite/std/format/arguments/lwg3810.cc: Likewise.
1405         * testsuite/std/format/functions/format.cc: Likewise.
1406         * testsuite/std/format/functions/vformat_to.cc: Likewise.
1407         * testsuite/std/format/string.cc: Likewise.
1408         * testsuite/std/time/day/io.cc: Likewise.
1409         * testsuite/std/time/month/io.cc: Likewise.
1410         * testsuite/std/time/weekday/io.cc: Likewise.
1411         * testsuite/std/time/year/io.cc: Likewise.
1412         * testsuite/std/time/year_month_day/io.cc: Likewise.
1413         * testsuite/std/format/arguments/args_neg.cc: New test.
1414
1415 2024-01-08  Jonathan Wakely  <jwakely@redhat.com>
1416
1417         * include/Makefile.am: Add new headers.
1418         * include/Makefile.in: Regenerate.
1419         * include/bits/unicode.h: New file.
1420         * include/bits/unicode-data.h: New file.
1421         * include/std/format: Include <bits/unicode.h>.
1422         (__literal_encoding_is_utf8): Move to <bits/unicode.h>.
1423         (_Spec::_M_fill): Change type to char32_t.
1424         (_Spec::_M_parse_fill_and_align): Read a Unicode scalar value
1425         instead of a single character.
1426         (__write_padded): Change __fill_char parameter to char32_t and
1427         encode it into the output.
1428         (__formatter_str::format): Use new __unicode::__field_width and
1429         __unicode::__truncate functions.
1430         * include/std/ostream: Adjust namespace qualification for
1431         __literal_encoding_is_utf8.
1432         * include/std/print: Likewise.
1433         * src/c++23/print.cc: Add [[unlikely]] attribute to error path.
1434         * testsuite/ext/unicode/view.cc: New test.
1435         * testsuite/std/format/functions/format.cc: Add missing examples
1436         from the standard demonstrating alignment with non-ASCII
1437         characters. Add examples checking correct handling of extended
1438         grapheme clusters.
1439
1440 2024-01-08  Jonathan Wakely  <jwakely@redhat.com>
1441
1442         * include/bits/version.def (format_uchar): Define.
1443         * include/bits/version.h: Regenerate.
1444         * include/std/format (formatter<C, C>::format): Check for
1445         _Pres_c and call _M_format_character directly. Cast C to its
1446         unsigned equivalent for formatting as an integer.
1447         (formatter<char, wchar_t>::format): Likewise.
1448         (basic_format_arg(T&)): Store char arguments as unsigned char
1449         for formatting to a wide string.
1450         * testsuite/std/format/functions/format.cc: Adjust test. Check
1451         formatting of
1452
1453 2024-01-07  Jonathan Wakely  <jwakely@redhat.com>
1454
1455         PR libstdc++/112997
1456         * libsupc++/unwind-cxx.h (__cxa_call_terminate): Change first
1457         parameter to void*.
1458
1459 2024-01-07  Jonathan Wakely  <jwakely@redhat.com>
1460
1461         * testsuite/20_util/variant/87619.cc: Remove dg-timeout-factor.
1462
1463 2024-01-07  Jonathan Wakely  <jwakely@redhat.com>
1464
1465         * include/std/type_traits (is_trivially_destructible_v): Use
1466         built-in directly when concepts are supported.
1467         * testsuite/20_util/is_trivially_destructible/value_v.cc: New
1468         test.
1469
1470 2024-01-06  Gwenole Beauchesne  <gb.devel@gmail.com>
1471
1472         * testsuite/tr1/8_c_compatibility/cinttypes/functions.cc: Use
1473         nonnull arguments to strtoimax() and wcstoimax() functions.
1474
1475 2024-01-05  Jonathan Wakely  <jwakely@redhat.com>
1476
1477         * src/c++17/fs_path.cc (path::_List::reserve): Limit maximum
1478         size and check for overflows in arithmetic.
1479         (path::operator/=(const path&)): Remove redundant exponential
1480         growth calculation.
1481
1482 2024-01-05  Martin Küttler  <martin.kuettler@kernkonzept.com>
1483
1484         * src/c++17/fs_path.cc (path::_List::reserve): Avoid
1485         floating-point arithmetic.
1486
1487 2024-01-05  Jonathan Wakely  <jwakely@redhat.com>
1488
1489         PR libstdc++/113241
1490         * include/std/type_traits (is_convertible_v): Guard use of
1491         built-in with preprocessor check.
1492
1493 2024-01-05  Jonathan Wakely  <jwakely@redhat.com>
1494
1495         PR libstdc++/113200
1496         * include/bits/char_traits.h (__gnu_cxx::char_traits::move): Use
1497         __builtin_constant_p to check for unrelated pointers that cannot
1498         be compared during constant evaluation.
1499         * testsuite/21_strings/char_traits/requirements/113200.cc: New
1500         test.
1501
1502 2024-01-05  Cassio Neri  <cassio.neri@gmail.com>
1503
1504         * include/std/chrono: Fix + and - for months and weekdays.
1505         * testsuite/std/time/month/1.cc: Add constexpr tests against overflow.
1506         * testsuite/std/time/month/2.cc: New test for extreme values.
1507         * testsuite/std/time/weekday/1.cc: Add constexpr tests against overflow.
1508         * testsuite/std/time/weekday/2.cc: New test for extreme values.
1509
1510 2024-01-05  Jonathan Wakely  <jwakely@redhat.com>
1511
1512         PR libstdc++/113099
1513         * include/bits/locale_classes.tcc (__try_use_facet): Use
1514         if-constexpr for C++11 and up.
1515
1516 2024-01-05  Ken Matsui  <kmatsui@gcc.gnu.org>
1517
1518         * include/std/type_traits: Use _GLIBCXX_USE_BUILTIN_TRAIT.
1519
1520 2024-01-04  Arsen Arsenović  <arsen@aarsen.me>
1521
1522         * include/std/generator (_Subyield_state::_M_jump_in): Fix typo
1523         reported by Will Hawkins <hawkinsw@obs.cr>.
1524
1525 2024-01-04  Arsen Arsenović  <arsen@aarsen.me>
1526
1527         * include/std/generator (_Stateless_alloc): Rename typename _A
1528         to _All.
1529
1530 2024-01-03  Patrick Palka  <ppalka@redhat.com>
1531
1532         PR testsuite/113175
1533         * testsuite/std/ranges/iota/max_size_type.cc (test02): Reduce
1534         'limit' to 100 from 1000 and adjust 'log2_limit' accordingly.
1535         (test03): Likewise.
1536
1537 \f
1538 Copyright (C) 2024 Free Software Foundation, Inc.
1539
1540 Copying and distribution of this file, with or without modification,
1541 are permitted in any medium without royalty provided the copyright
1542 notice and this notice are preserved.