libstdc++-v3/ChangeLog

   1 2024-01-30  Jonathan Wakely  <jwakely@redhat.com>
   2
   3         * testsuite/std/time/clock/gps/io.cc: Fix expected result in
   4         assertion and call test_format() from main.
   5
   6 2024-01-29  François Dumont  <fdumont@gcc.gnu.org>
   7
   8         * doc/xml/manual/debug_mode.xml: Link against libstdc++exp.a to use
   9         _GLIBCXX_DEBUG_BACKTRACE macro.
  10
  11 2024-01-24  Huanghui Nie  <nnnjkk@gmail.com>
  12             Théo Papadopoulo   <papadopoulo@gmail.com>
  13
  14         * include/bits/hashtable.h (_Hahstable<>::_M_remove_bucket_begin): Remove
  15         _M_before_begin check and cleanup implementation.
  16
  17 2024-01-22  Jonathan Wakely  <jwakely@redhat.com>
  18
  19         * testsuite/std/time/clock/file/io.cc: Fix expected result in
  20         assertion and call test_format() from main.
  21
  22 2024-01-21  Jonathan Wakely  <jwakely@redhat.com>
  23
  24         PR libstdc++/113500
  25         * include/bits/chrono_io.h (__formatter_chrono::_M_S): Fix
  26         printing of subseconds with floating-point rep.
  27         (__formatter_chrono::_M_format_to_ostream): Do not write
  28         time_point specializations directly to the ostream.
  29         (formatter<chrono::sys_time<D>, C>::parse): Do not allow an
  30         empty chrono-spec if the type fails to meet the constraints for
  31         writing to an ostream with operator<<.
  32         * testsuite/std/time/clock/file/io.cc: Check formatting
  33         non-integral times with empty chrono-specs.
  34         * testsuite/std/time/clock/gps/io.cc: Likewise.
  35         * testsuite/std/time/clock/utc/io.cc: Likewise.
  36         * testsuite/std/time/hh_mm_ss/io.cc: Likewise.
  37
  38 2024-01-21  Jonathan Wakely  <jwakely@redhat.com>
  39
  40         * include/bits/chrono.h (__file_clock::from_sys)
  41         (__file_clock::to_sys, __file_clock::_S_from_sys)
  42         (__file_clock::_S_to_sys): Use common_type for return type.
  43         * testsuite/std/time/clock/file/members.cc: Check round trip
  44         conversion for time with lower precision that seconds.
  45
  46 2024-01-21  Jonathan Wakely  <jwakely@redhat.com>
  47
  48         PR libstdc++/113512
  49         * include/std/format (__formatter_fp::format): Fix logic for
  50         alternate forms.
  51         * testsuite/std/format/functions/format.cc: Check buggy cases of
  52         alternate forms with g presentation type.
  53
  54 2024-01-20  Marek Polacek  <polacek@redhat.com>
  55
  56         PR c++/111410
  57         * include/std/ranges: Add #pragma to disable -Wdangling-reference with
  58         std::ranges::views::__adaptor::operator|.
  59
  60 2024-01-19  Jonathan Wakely  <jwakely@redhat.com>
  61
  62         * include/std/format (_Spec::_M_parse_fill_and_align): Do not
  63         use CTAD for _Utf32_view.
  64
  65 2024-01-19  Jonathan Wakely  <jwakely@redhat.com>
  66
  67         PR libstdc++/108822
  68         * include/std/tuple (__glibcxx_no_dangling_refs) [C++17]: Fix
  69         wrong fold-operator.
  70         * testsuite/20_util/tuple/dangling_ref.cc: Check tuples with one
  71         element and three elements. Check allocator-extended
  72         constructors.
  73
  74 2024-01-19  Patrick Palka  <ppalka@redhat.com>
  75
  76         * include/precompiled/stdc++.h [_GLIBCXX_HOSTED]: Include
  77         <print> and <text_encoding> for C++23 and C++26 respectively.
  78
  79 2024-01-18  Patrick Palka  <ppalka@redhat.com>
  80
  81         * include/bits/stl_pair.h [__cplusplus > 202002L]:
  82         Guard P2321R2 changes with __glibcxx_ranges_zip instead.
  83
  84 2024-01-18  Patrick Palka  <ppalka@redhat.com>
  85
  86         * include/std/tuple [__cplusplus > 202002L]: Guard P2321R2
  87         changes with __cpp_lib_ranges_zip instead.
  88
  89 2024-01-18  Patrick Palka  <ppalka@redhat.com>
  90
  91         PR libstdc++/109536
  92         * include/debug/safe_base.h (_Safe_sequence_base::_M_swap):
  93         Remove _GLIBCXX20_CONSTEXPR from non-inline member function.
  94         * include/debug/safe_iterator.h
  95         (_GLIBCXX20_CONSTEXPR_NON_LITERAL_SCOPE_BEGIN): Define.
  96         (_GLIBCXX20_CONSTEXPR_NON_LITERAL_SCOPE_END): Define.
  97         (_Safe_iterator::operator=): Use them around the code path that
  98         defines a variable of type __gnu_cxx::__scoped_lock.
  99         (_Safe_iterator::operator++): Likewise.
 100         (_Safe_iterator::operator--): Likewise.
 101         (_Safe_iterator::operator+=): Likewise.
 102         (_Safe_iterator::operator-=): Likewise.
 103         * testsuite/23_containers/vector/element_access/constexpr.cc
 104         (test_iterators): Test more iterator operations.
 105         * testsuite/23_containers/vector/bool/element_access/constexpr.cc
 106         (test_iterators): Likewise.
 107         * testsuite/std/ranges/adaptors/all.cc (test08) [_GLIBCXX_DEBUG]:
 108         Remove.
 109
 110 2024-01-18  Jonathan Wakely  <jwakely@redhat.com>
 111
 112         * include/bits/unicode.h (__charset_alias_match): Initialize
 113         __var_a and __var_b.
 114
 115 2024-01-18  Jonathan Wakely  <jwakely@redhat.com>
 116
 117         PR libstdc++/113450
 118         * testsuite/std/format/functions/format.cc: Use signed char
 119         instead of int8_t.
 120
 121 2024-01-17  Jonathan Wakely  <jwakely@redhat.com>
 122
 123         PR libstdc++/113318
 124         * acinclude.m4 (GLIBCXX_CONFIGURE): Add c++26 directory.
 125         (GLIBCXX_CHECK_TEXT_ENCODING): Define.
 126         * config.h.in: Regenerate.
 127         * configure: Regenerate.
 128         * configure.ac: Use GLIBCXX_CHECK_TEXT_ENCODING.
 129         * include/Makefile.am: Add new headers.
 130         * include/Makefile.in: Regenerate.
 131         * include/bits/locale_classes.h (locale::encoding): Declare new
 132         member function.
 133         * include/bits/unicode.h (__charset_alias_match): New function.
 134         * include/bits/text_encoding-data.h: New file.
 135         * include/bits/version.def (text_encoding): Define.
 136         * include/bits/version.h: Regenerate.
 137         * include/std/text_encoding: New file.
 138         * src/Makefile.am: Add new subdirectory.
 139         * src/Makefile.in: Regenerate.
 140         * src/c++26/Makefile.am: New file.
 141         * src/c++26/Makefile.in: New file.
 142         * src/c++26/text_encoding.cc: New file.
 143         * src/experimental/Makefile.am: Include c++26 convenience
 144         library.
 145         * src/experimental/Makefile.in: Regenerate.
 146         * python/libstdcxx/v6/printers.py (StdTextEncodingPrinter): New
 147         printer.
 148         * scripts/gen_text_encoding_data.py: New file.
 149         * testsuite/22_locale/locale/encoding.cc: New test.
 150         * testsuite/ext/unicode/charset_alias_match.cc: New test.
 151         * testsuite/std/text_encoding/cons.cc: New test.
 152         * testsuite/std/text_encoding/members.cc: New test.
 153         * testsuite/std/text_encoding/requirements.cc: New test.
 154
 155 2024-01-17  Jonathan Wakely  <jwakely@redhat.com>
 156
 157         * include/bits/unicode.h (_Grapheme_cluster_view): Require view.
 158         Do not use CTAD for _Utf32_view.
 159         (__format_width, __truncate): Do not use CTAD.
 160         (enable_borrowed_range<_Utf_view<T, R>>): Define specialization.
 161         (enable_borrowed_range<_Grapheme_cluster_view<R>>): Likewise.
 162
 163 2024-01-17  Patrick Palka  <ppalka@redhat.com>
 164
 165         * include/std/ranges (views::_CartesianProduct::operator()):
 166         Adjust identity case as per P2540R1.
 167         * testsuite/std/ranges/cartesian_product/1.cc (test01):
 168         Adjust expected result of the identity case.
 169
 170 2024-01-15  Patrick Palka  <ppalka@redhat.com>
 171
 172         * include/std/variant (__detail::__variant::_Variadic_union):
 173         Add bool __trivially_destructible template parameter.
 174         (__detail::__variant::_Variadic_union::~_Variadic_union):
 175         Use __trivially_destructible in constraints instead.
 176         (__detail::__variant::_Variant_storage): Pass
 177         __trivially_destructible value to _Variadic_union.
 178
 179 2024-01-15  Patrick Palka  <ppalka@redhat.com>
 180
 181         * include/bits/stl_iterator.h (const_iterator): Define conversion
 182         operators as per P2836R1.
 183         * include/bits/version.def (ranges_as_const): Update value.
 184         * include/bits/version.h: Regenerate.
 185         * testsuite/24_iterators/const_iterator/1.cc (test04): New test.
 186         * testsuite/std/ranges/adaptors/as_const/1.cc: Adjust expected
 187         value of __cpp_lib_ranges_as_const.
 188         * testsuite/std/ranges/version_c++23.cc: Likewise.
 189
 190 2024-01-15  Jonathan Wakely  <jwakely@redhat.com>
 191
 192         PR libstdc++/108822
 193         * include/std/tuple (__assignable, __is_nothrow_assignable):
 194         Move pre-C++20 definitions adjacent to their use.
 195
 196 2024-01-15  Jonathan Wakely  <jwakely@redhat.com>
 197
 198         PR testsuite/113366
 199         * include/std/format (basic_format_arg): Use __formattable
 200         variable template instead of __format::__formattable_with
 201         concept.
 202
 203 2024-01-15  Jonathan Wakely  <jwakely@redhat.com>
 204
 205         * src/c++20/tzdata.zi: Import new file from 2023d release.
 206         * src/c++20/tzdb.cc (tzdb_list::_Node::_S_read_leap_seconds)
 207         Update expiry date for leap seconds list.
 208
 209 2024-01-13  Jonathan Wakely  <jwakely@redhat.com>
 210
 211         PR libstdc++/108822
 212         * include/std/tuple (tuple): Add checks for dangling references.
 213         Reimplement constraints and constant expressions using C++20
 214         features.
 215         * include/std/type_traits [C++20]
 216         (__is_implicitly_default_constructible_v): Define.
 217         (__is_implicitly_default_constructible): Use variable template.
 218         * testsuite/20_util/tuple/dangling_ref.cc: New test.
 219
 220 2024-01-13  Patrick Palka  <ppalka@redhat.com>
 221
 222         PR libstdc++/108827
 223         PR libstdc++/111327
 224         * include/bits/version.def (bind_back): Define.
 225         * include/bits/version.h: Regenerate.
 226         * include/std/functional (_Bind_back): Define for C++23.
 227         (bind_back): Likewise.
 228         * testsuite/20_util/function_objects/bind_back/1.cc: New test
 229         (adapted from corresponding bind_front test).
 230         * testsuite/20_util/function_objects/bind_back/111327.cc: Likewise.
 231
 232 2024-01-13  Patrick Palka  <ppalka@redhat.com>
 233
 234         * include/std/functional (_Bind_front): Remove =default special
 235         member function declarations.
 236         (_Bind_front::operator()): Implement using C++23 deducing this
 237         when available.
 238         * testsuite/20_util/function_objects/bind_front/111327.cc:
 239         Adjust testcase to expect better errors in C++23 mode.
 240
 241 2024-01-13  Patrick Palka  <ppalka@redhat.com>
 242
 243         * include/std/ranges (views::__adaptor::operator|): Perform
 244         perfect forwarding of arguments.
 245         (views::__adaptor::_RangeAdaptor::operator()): Pass dummy
 246         first argument to _Partial.
 247         (views::__adaptor::_Partial::_Partial): Likewise.  Add dummy
 248         first parameter.
 249         (views::__adaptor::_Pipe::_Pipe): Perform perfect forwarding
 250         of arguments.
 251         (to): Pass dummy first argument to _Partial.
 252
 253 2024-01-13  Jonathan Wakely  <jwakely@redhat.com>
 254
 255         PR libstdc++/107466
 256         * include/bits/random.tcc (subtract_with_carry_engine::seed):
 257         Implement proposed resolution of LWG 4014.
 258         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
 259         line number.
 260         * testsuite/26_numerics/random/subtract_with_carry_engine/cons/lwg3809.cc:
 261         Check for expected result of 64-bit engine with seed that
 262         doesn't fit in 32-bits.
 263
 264 2024-01-12  Jonathan Wakely  <jwakely@redhat.com>
 265
 266         PR libstdc++/113320
 267         * include/std/format (__format::_Runtime_format_string): Add
 268         constructor and disable copy operations.
 269         (basic_format_string(_Runtime_format_string)): Add noexcept and
 270         take parameter by value not rvalue reference.
 271         (runtime_format): Add noexcept.
 272         * testsuite/std/format/runtime_format.cc: Check noexcept. Check
 273         that construction is only possible from prvalues, not xvalues.
 274
 275 2024-01-12  Jonathan Wakely  <jwakely@redhat.com>
 276
 277         PR libstdc++/105505
 278         * include/bits/stl_pair.h (pair::pair(U1&&, U2&&)) [C++23]: Add
 279         default template arguments, as per P1951R1.
 280         * testsuite/20_util/pair/cons/default_tmpl_args.cc: New test.
 281
 282 2024-01-12  Jonathan Wakely  <jwakely@redhat.com>
 283
 284         * include/std/format (__format::_Arg_store): Fix PR number in
 285         comment. Simplify preprocessor code.
 286
 287 2024-01-11  Jonathan Wakely  <jwakely@redhat.com>
 288
 289         * doc/xml/manual/evolution.xml: Fix spelling.
 290         * doc/html/manual/api.html: Regenerate.
 291
 292 2024-01-11  Jonathan Wakely  <jwakely@redhat.com>
 293
 294         * doc/xml/manual/evolution.xml: Document addition of
 295         libstdc++exp.a.
 296         * doc/html/*: Regenerate.
 297
 298 2024-01-11  Marcus Haehnel  <marcus.haehnel@kernkonzept.com>
 299
 300         * libsupc++/eh_unex_handler.cc: Adjust definition type to
 301         declaration.
 302
 303 2024-01-11  Michael Levine  <mlevine55@bloomberg.net>
 304
 305         * include/std/ranges (__glibcxx_want_ranges_iota): Remove
 306         duplicate definition.
 307
 308 2024-01-11  François Dumont  <fdumont@gcc.gnu.org>
 309
 310         PR libstdc++/112477
 311         * src/c++11/debug.cc
 312         (_Safe_iterator_base::_M_attach): Reset _M_version to 0 if attaching to null
 313         sequence.
 314         (_Safe_iterator_base::_M_attach_single): Likewise.
 315         (_Safe_local_iterator_base::_M_attach): Likewise.
 316         (_Safe_local_iterator_base::_M_attach_single): Likewise.
 317         * testsuite/23_containers/map/debug/112477.cc: New test case.
 318
 319 2024-01-11  Patrick Palka  <ppalka@redhat.com>
 320
 321         * include/bits/move.h (__like_t): Define in C++23 mode.
 322         * include/std/ranges (views::__adaptor::Partial::operator()):
 323         Implement using C++23 deducing this when available.
 324         (views::__adaptor::_Pipe::operator()): Likewise.
 325         * testsuite/std/ranges/adaptors/100577.cc: Adjust testcase to
 326         accept new "no match for call" errors issued in C++23 mode.
 327         * testsuite/std/ranges/adaptors/lazy_split_neg.cc: Likewise.
 328
 329 2024-01-11  Jonathan Wakely  <jwakely@redhat.com>
 330
 331         * python/libstdcxx/v6/printers.py (StdIntegralConstantPrinter):
 332         Add printer for std::integral_constant.
 333         * testsuite/libstdc++-prettyprinters/cxx11.cc: Test it.
 334
 335 2024-01-11  Jonathan Wakely  <jwakely@redhat.com>
 336
 337         PR libstdc++/113258
 338         * libsupc++/new_opa.cc: Prefer to use posix_memalign if
 339         available.
 340
 341 2024-01-11  Ken Matsui  <kmatsui@gcc.gnu.org>
 342
 343         * src/filesystem/ops-common.h (stat_type): Use using.
 344
 345 2024-01-11  Ken Matsui  <kmatsui@gcc.gnu.org>
 346
 347         PR libstdc++/113250
 348         * src/c++17/fs_ops.cc (fs::equivalent): Use || instead of &&.
 349         * src/filesystem/ops.cc (fs::equivalent): Likewise.
 350         * testsuite/27_io/filesystem/operations/equivalent.cc: Handle
 351         error codes.
 352         * testsuite/experimental/filesystem/operations/equivalent.cc:
 353         Likewise.
 354
 355 2024-01-11  Ken Matsui  <kmatsui@gcc.gnu.org>
 356
 357         * include/std/type_traits (is_compound): Do not use __not_.
 358         (is_compound_v): Use is_fundamental_v instead.
 359
 360 2024-01-11  Patrick Palka  <ppalka@redhat.com>
 361
 362         * include/bits/utility.h (_Nth_type): Use
 363         _GLIBCXX_USE_BUILTIN_TRAIT instead of __has_builtin.
 364
 365 2024-01-09  Jonathan Wakely  <jwakely@redhat.com>
 366
 367         * include/bits/unicode-data.h: Regenerate.
 368         * include/bits/unicode.h (_Utf_iterator::operator++()): Fix off
 369         by one error.
 370         (__incb_property): Add missing check for values before the
 371         first edge.
 372         (__is_extended_pictographic): Invert return values to fix
 373         copy&pasted logic.
 374         (_Grapheme_cluster_view::_Iterator): Remove second iterator
 375         member and find end of cluster lazily.
 376         * testsuite/ext/unicode/grapheme_view.cc: New test.
 377         * testsuite/ext/unicode/properties.cc: New test.
 378         * testsuite/ext/unicode/view.cc: New test.
 379
 380 2024-01-09  Andreas Schwab  <schwab@linux-m68k.org>
 381
 382         * scripts/extract_symvers.in: Require final colon to only match
 383         .dsynsym in the header of the dynamic symtab.
 384
 385 2024-01-09  Jonathan Wakely  <jwakely@redhat.com>
 386
 387         * include/bits/chrono_io.h (__formatter_chrono::_M_F): Simplify
 388         handling of string returned from std::format.
 389         (__formatter_chrono::_M_R_T): Likewise.
 390
 391 2024-01-08  Jonathan Wakely  <jwakely@redhat.com>
 392
 393         * include/bits/unicode.h (__null_sentinel): Remove.
 394         * testsuite/17_intro/names.cc: Add __null_sentinel.
 395
 396 2024-01-08  Jonathan Wakely  <jwakely@redhat.com>
 397
 398         * include/std/format (__format::_Runtime_format_string): Define
 399         new class template.
 400         (basic_format_string): Add non-consteval constructor for runtime
 401         format strings.
 402         (runtime_format): Define new function for C++26.
 403         * testsuite/std/format/runtime_format.cc: New test.
 404
 405 2024-01-08  Jonathan Wakely  <jwakely@redhat.com>
 406
 407         * include/bits/chrono_io.h (__formatter_chrono): Always use
 408         lvalue arguments to make_format_args.
 409         * include/std/format (make_format_args): Change parameter pack
 410         from forwarding references to lvalue references. Remove use of
 411         remove_reference_t which is now unnecessary.
 412         (format_to, formatted_size): Remove incorrect forwarding of
 413         arguments.
 414         * include/std/ostream (print): Remove forwarding of arguments.
 415         * include/std/print (print): Likewise.
 416         * testsuite/20_util/duration/io.cc: Use lvalues as arguments to
 417         make_format_args.
 418         * testsuite/std/format/arguments/args.cc: Likewise.
 419         * testsuite/std/format/arguments/lwg3810.cc: Likewise.
 420         * testsuite/std/format/functions/format.cc: Likewise.
 421         * testsuite/std/format/functions/vformat_to.cc: Likewise.
 422         * testsuite/std/format/string.cc: Likewise.
 423         * testsuite/std/time/day/io.cc: Likewise.
 424         * testsuite/std/time/month/io.cc: Likewise.
 425         * testsuite/std/time/weekday/io.cc: Likewise.
 426         * testsuite/std/time/year/io.cc: Likewise.
 427         * testsuite/std/time/year_month_day/io.cc: Likewise.
 428         * testsuite/std/format/arguments/args_neg.cc: New test.
 429
 430 2024-01-08  Jonathan Wakely  <jwakely@redhat.com>
 431
 432         * include/Makefile.am: Add new headers.
 433         * include/Makefile.in: Regenerate.
 434         * include/bits/unicode.h: New file.
 435         * include/bits/unicode-data.h: New file.
 436         * include/std/format: Include <bits/unicode.h>.
 437         (__literal_encoding_is_utf8): Move to <bits/unicode.h>.
 438         (_Spec::_M_fill): Change type to char32_t.
 439         (_Spec::_M_parse_fill_and_align): Read a Unicode scalar value
 440         instead of a single character.
 441         (__write_padded): Change __fill_char parameter to char32_t and
 442         encode it into the output.
 443         (__formatter_str::format): Use new __unicode::__field_width and
 444         __unicode::__truncate functions.
 445         * include/std/ostream: Adjust namespace qualification for
 446         __literal_encoding_is_utf8.
 447         * include/std/print: Likewise.
 448         * src/c++23/print.cc: Add [[unlikely]] attribute to error path.
 449         * testsuite/ext/unicode/view.cc: New test.
 450         * testsuite/std/format/functions/format.cc: Add missing examples
 451         from the standard demonstrating alignment with non-ASCII
 452         characters. Add examples checking correct handling of extended
 453         grapheme clusters.
 454
 455 2024-01-08  Jonathan Wakely  <jwakely@redhat.com>
 456
 457         * include/bits/version.def (format_uchar): Define.
 458         * include/bits/version.h: Regenerate.
 459         * include/std/format (formatter<C, C>::format): Check for
 460         _Pres_c and call _M_format_character directly. Cast C to its
 461         unsigned equivalent for formatting as an integer.
 462         (formatter<char, wchar_t>::format): Likewise.
 463         (basic_format_arg(T&)): Store char arguments as unsigned char
 464         for formatting to a wide string.
 465         * testsuite/std/format/functions/format.cc: Adjust test. Check
 466         formatting of
 467
 468 2024-01-07  Jonathan Wakely  <jwakely@redhat.com>
 469
 470         PR libstdc++/112997
 471         * libsupc++/unwind-cxx.h (__cxa_call_terminate): Change first
 472         parameter to void*.
 473
 474 2024-01-07  Jonathan Wakely  <jwakely@redhat.com>
 475
 476         * testsuite/20_util/variant/87619.cc: Remove dg-timeout-factor.
 477
 478 2024-01-07  Jonathan Wakely  <jwakely@redhat.com>
 479
 480         * include/std/type_traits (is_trivially_destructible_v): Use
 481         built-in directly when concepts are supported.
 482         * testsuite/20_util/is_trivially_destructible/value_v.cc: New
 483         test.
 484
 485 2024-01-06  Gwenole Beauchesne  <gb.devel@gmail.com>
 486
 487         * testsuite/tr1/8_c_compatibility/cinttypes/functions.cc: Use
 488         nonnull arguments to strtoimax() and wcstoimax() functions.
 489
 490 2024-01-05  Jonathan Wakely  <jwakely@redhat.com>
 491
 492         * src/c++17/fs_path.cc (path::_List::reserve): Limit maximum
 493         size and check for overflows in arithmetic.
 494         (path::operator/=(const path&)): Remove redundant exponential
 495         growth calculation.
 496
 497 2024-01-05  Martin Küttler  <martin.kuettler@kernkonzept.com>
 498
 499         * src/c++17/fs_path.cc (path::_List::reserve): Avoid
 500         floating-point arithmetic.
 501
 502 2024-01-05  Jonathan Wakely  <jwakely@redhat.com>
 503
 504         PR libstdc++/113241
 505         * include/std/type_traits (is_convertible_v): Guard use of
 506         built-in with preprocessor check.
 507
 508 2024-01-05  Jonathan Wakely  <jwakely@redhat.com>
 509
 510         PR libstdc++/113200
 511         * include/bits/char_traits.h (__gnu_cxx::char_traits::move): Use
 512         __builtin_constant_p to check for unrelated pointers that cannot
 513         be compared during constant evaluation.
 514         * testsuite/21_strings/char_traits/requirements/113200.cc: New
 515         test.
 516
 517 2024-01-05  Cassio Neri  <cassio.neri@gmail.com>
 518
 519         * include/std/chrono: Fix + and - for months and weekdays.
 520         * testsuite/std/time/month/1.cc: Add constexpr tests against overflow.
 521         * testsuite/std/time/month/2.cc: New test for extreme values.
 522         * testsuite/std/time/weekday/1.cc: Add constexpr tests against overflow.
 523         * testsuite/std/time/weekday/2.cc: New test for extreme values.
 524
 525 2024-01-05  Jonathan Wakely  <jwakely@redhat.com>
 526
 527         PR libstdc++/113099
 528         * include/bits/locale_classes.tcc (__try_use_facet): Use
 529         if-constexpr for C++11 and up.
 530
 531 2024-01-05  Ken Matsui  <kmatsui@gcc.gnu.org>
 532
 533         * include/std/type_traits: Use _GLIBCXX_USE_BUILTIN_TRAIT.
 534
 535 2024-01-04  Arsen Arsenović  <arsen@aarsen.me>
 536
 537         * include/std/generator (_Subyield_state::_M_jump_in): Fix typo
 538         reported by Will Hawkins <hawkinsw@obs.cr>.
 539
 540 2024-01-04  Arsen Arsenović  <arsen@aarsen.me>
 541
 542         * include/std/generator (_Stateless_alloc): Rename typename _A
 543         to _All.
 544
 545 2024-01-03  Patrick Palka  <ppalka@redhat.com>
 546
 547         PR testsuite/113175
 548         * testsuite/std/ranges/iota/max_size_type.cc (test02): Reduce
 549         'limit' to 100 from 1000 and adjust 'log2_limit' accordingly.
 550         (test03): Likewise.
 551
 552 \f
 553 Copyright (C) 2024 Free Software Foundation, Inc.
 554
 555 Copying and distribution of this file, with or without modification,
 556 are permitted in any medium without royalty provided the copyright
 557 notice and this notice are preserved.