libstdc++-v3/ChangeLog

   1 2024-05-23  Patrick Palka  <ppalka@redhat.com>
   2
   3         * include/bits/version.def (ranges_concat): Define.
   4         * include/bits/version.h: Regenerate.
   5         * include/std/ranges (__detail::__concat_reference_t): Define
   6         for C++26.
   7         (__detail::__concat_value_t): Likewise.
   8         (__detail::__concat_rvalue_reference_t): Likewise.
   9         (__detail::__concat_indirectly_readable_impl): Likewise.
  10         (__detail::__concat_indirectly_readable): Likewise.
  11         (__detail::__concatable): Likewise.
  12         (__detail::__all_but_last_common): Likewise.
  13         (__detail::__concat_is_random_access): Likewise.
  14         (__detail::__concat_is_bidirectional): Likewise.
  15         (__detail::__last_is_common): Likewise.
  16         (concat_view): Likewise.
  17         (__detail::__concat_view_iter_cat): Likewise.
  18         (concat_view::iterator): Likewise.
  19         (views::__detail::__can_concat_view): Likewise.
  20         (views::_Concat, views::concat): Likewise.
  21         * testsuite/std/ranges/concat/1.cc: New test.
  22
  23 2024-05-22  Jonathan Wakely  <jwakely@redhat.com>
  24
  25         * include/bits/locale_classes.h (locale::combine)
  26         (locale::name, locale::operator==, locale::operator!=)
  27         (locale::operator(), locale::classic): Add nodiscard
  28         attribute.
  29         * include/bits/locale_classes.tcc (has_facet, use_facet):
  30         Likewise.
  31         * testsuite/22_locale/locale/cons/12438.cc: Add dg-warning for
  32         nodiscard diagnostic.
  33         * testsuite/22_locale/locale/cons/2.cc: Cast use_facet
  34         expression to void, to suppress diagnostic.
  35         * testsuite/22_locale/locale/cons/unicode.cc: Likewise.
  36         * testsuite/22_locale/locale/operations/2.cc: Add dg-warning.
  37
  38 2024-05-22  Jonathan Wakely  <jwakely@redhat.com>
  39
  40         PR libstdc++/108323
  41         * include/bits/locale_classes.tcc (locale(const locale&, Facet*)):
  42         Return a copy of the first argument when the facet pointer is
  43         null, as per LWG 2295.
  44         (locale::combine): Ensure the result is unnamed.
  45         * src/c++11/localename.cc (_M_replace_categories): Ignore
  46         whether the second locale has a name when cat == none, as per
  47         LWG 3676.
  48         * src/c++98/locale.cc (_M_install_facet): Use __builtin_expect
  49         to predict that the facet pointer is non-null.
  50         * testsuite/22_locale/locale/cons/names.cc: New test.
  51
  52 2024-05-22  Jonathan Wakely  <jwakely@redhat.com>
  53
  54         PR libstdc++/114940
  55         * include/bits/version.def (generator): Depend on
  56         __cpp_sized_deallocation.
  57         * include/bits/version.h: Regenerate.
  58         * include/std/stacktrace (_GLIBCXX_SIZED_DELETE): New macro.
  59         (basic_stacktrace::_Impl::_M_deallocate): Use it.
  60
  61 2024-05-22  Jonathan Wakely  <jwakely@redhat.com>
  62
  63         PR libstdc++/115099
  64         * include/bits/std_thread.h: Declare formatter as friend of
  65         thread::id.
  66         * include/std/thread (operator<<): Convert non-void pointers to
  67         void pointers for output.
  68         (formatter): Add constraint that thread::native_handle_type is a
  69         pointer or integer.
  70         (formatter::format): Reimplement without basic_ostringstream.
  71         * testsuite/30_threads/thread/id/output.cc: Check output
  72         compiles before <sstream> has been included.
  73
  74 2024-05-22  Jonathan Wakely  <jwakely@redhat.com>
  75
  76         PR libstdc++/115145
  77         * include/std/variant (operator==, operator!=, operator<)
  78         (operator<=, operator>, operator>=): Add trailing-return-type to
  79         lambda expressions to trigger conversion to bool.
  80         * testsuite/20_util/variant/relops/115145.cc: New test.
  81
  82 2024-05-17  Björn Schäpers  <bjoern@hazardy.de>
  83
  84         * acinclude.m4 (GLIBCXX_ENABLE_BACKTACE): Add check for
  85         tlhelp32.h, matching libbacktrace.
  86         * config.h.in: Regenerate.
  87         * configure: Regenerate.
  88
  89 2024-05-17  Jonathan Wakely  <jwakely@redhat.com>
  90
  91         PR libstdc++/115119
  92         * include/bits/unicode.h (_Iterator::operator++(int)): Fix typo
  93         in increment expression.
  94         * testsuite/ext/unicode/grapheme_view.cc: Check post-increment
  95         on view's iterator.
  96
  97 2024-05-15  Jonathan Wakely  <jwakely@redhat.com>
  98
  99         PR libstdc++/77704
 100         * include/bits/basic_ios.h (basic_ios::fill()): Do not modify
 101         _M_fill and _M_fill_init in a const member function.
 102         (basic_ios::fill(char_type)): Use _M_fill directly instead of
 103         calling fill(). Set _M_fill_init to true.
 104         * include/bits/basic_ios.tcc (basic_ios::init): Set _M_fill and
 105         _M_fill_init here instead.
 106         * testsuite/27_io/basic_ios/fill/char/1.cc: New test.
 107         * testsuite/27_io/basic_ios/fill/wchar_t/1.cc: New test.
 108
 109 2024-05-15  Jonathan Wakely  <jwakely@redhat.com>
 110
 111         * include/std/variant (__detail::__variant::__compare): New
 112         function template.
 113         (operator==, operator!=, operator<, operator>, operator<=)
 114         (operator>=): Replace macro definition with handwritten function
 115         calling __detail::__variant::__compare.
 116         (operator<=>): Call __detail::__variant::__compare.
 117
 118 2024-05-15  Jonathan Wakely  <jwakely@redhat.com>
 119
 120         PR libstdc++/89624
 121         * include/bits/atomic_base.h (memory_order): Use int as
 122         underlying type.
 123         * testsuite/29_atomics/atomic/89624.cc: New test.
 124
 125 2024-05-14  Jonathan Wakely  <jwakely@redhat.com>
 126
 127         PR libstdc++/115015
 128         * src/c++23/print.cc (__open_terminal(streambuf*)) [!__cpp_rtti]:
 129         Do not use dynamic_cast.
 130
 131 2024-05-14  Jonathan Wakely  <jwakely@redhat.com>
 132
 133         * doc/xml/manual/strings.xml: Clarify that GCC 4.5 added
 134         std::string::shrink_to_fit.
 135         * doc/html/manual/strings.html: Regenerate.
 136
 137 2024-05-14  Jonathan Wakely  <jwakely@redhat.com>
 138
 139         PR libstdc++/115063
 140         * include/std/stacktrace (basic_stacktrace::max_size): Fix typo
 141         in reference to _M_alloc member.
 142         * testsuite/19_diagnostics/stacktrace/stacktrace.cc: Check
 143         max_size() compiles.
 144
 145 2024-05-13  Matthias Kretz  <m.kretz@gsi.de>
 146
 147         PR libstdc++/114958
 148         * include/experimental/bits/simd.h (__as_vector): Return scalar
 149         simd as one-element vector. Return vector from single-vector
 150         fixed_size simd.
 151         (__vec_shuffle): New.
 152         (__extract_part): Adjust return type signature.
 153         (split): Use __extract_part for any split into non-fixed_size
 154         simds.
 155         (concat): If the return type stores a single vector, use
 156         __vec_shuffle (which calls __builtin_shufflevector) to produce
 157         the return value.
 158         * include/experimental/bits/simd_builtin.h
 159         (__shift_elements_right): Removed.
 160         (__extract_part): Return single elements directly. Use
 161         __vec_shuffle (which calls __builtin_shufflevector) to for all
 162         non-trivial cases.
 163         * include/experimental/bits/simd_fixed_size.h (__extract_part):
 164         Return single elements directly.
 165         * testsuite/experimental/simd/pr114958.cc: New test.
 166
 167 2024-05-07  Jonathan Wakely  <jwakely@redhat.com>
 168
 169         * include/bits/unicode.h (_Unicode_view::_M_read_utf8): Ensure
 170         count of characters consumed is correct when the end of the
 171         input is reached unexpectedly.
 172         * testsuite/ext/unicode/view.cc: Test incomplete UTF-8
 173         sequences.
 174
 175 2024-05-07  Jonathan Wakely  <jwakely@redhat.com>
 176
 177         PR libstdc++/114866
 178         * include/bits/out_ptr.h [!_GLIBCXX_HOSTED]: Don't refer to
 179         shared_ptr, __shared_ptr or __is_shred_ptr.
 180         * testsuite/20_util/headers/memory/114866.cc: New test.
 181
 182 2024-05-07  Jonathan Wakely  <jwakely@redhat.com>
 183
 184         * include/std/variant (_VARIANT_RELATION_FUNCTION_TEMPLATE):
 185         Simplify.
 186
 187 2024-05-07  Jonathan Wakely  <jwakely@redhat.com>
 188
 189         * include/bits/stl_pair.h (operator==): Add constraint.
 190         * include/bits/version.def (constrained_equality): Define.
 191         * include/bits/version.h: Regenerate.
 192         * include/std/optional: Define feature test macro.
 193         (__optional_rep_op_t): Use is_convertible_v instead of
 194         is_convertible.
 195         * include/std/tuple: Define feature test macro.
 196         (operator==, __tuple_cmp, operator<=>): Reimplement C++20
 197         comparisons using lambdas. Add constraints.
 198         * include/std/utility: Define feature test macro.
 199         * include/std/variant: Define feature test macro.
 200         (_VARIANT_RELATION_FUNCTION_TEMPLATE): Add constraints.
 201         (variant): Remove unnecessary friend declarations for comparison
 202         operators.
 203         * testsuite/20_util/optional/relops/constrained.cc: New test.
 204         * testsuite/20_util/pair/comparison_operators/constrained.cc:
 205         New test.
 206         * testsuite/20_util/tuple/comparison_operators/constrained.cc:
 207         New test.
 208         * testsuite/20_util/variant/relops/constrained.cc: New test.
 209         * testsuite/20_util/tuple/comparison_operators/overloaded.cc:
 210         Disable for C++20 and later.
 211         * testsuite/20_util/tuple/comparison_operators/overloaded2.cc:
 212         Remove dg-error line for target c++20.
 213
 214 2024-05-07  Jonathan Wakely  <jwakely@redhat.com>
 215
 216         * include/backward/auto_ptr.h: Use https for URL in comment.
 217         * include/bits/basic_ios.h: Likewise.
 218         * include/std/iostream: Likewise.
 219
 220 2024-05-07  Jonathan Wakely  <jwakely@redhat.com>
 221
 222         * testsuite/util/testsuite_abi.cc: Update latest versions to
 223         new versions that should be used in future.
 224
 225 2024-05-07  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 226
 227         * src/Makefile.am [ENABLE_SYMVERS_SUN]
 228         (libstdc++-symbols.ver-sun): Pass $(libstdc___la_OBJECTS),
 229         $(libstdc___la_LIBADD) to make_sunver.pl unmodified.
 230         * src/Makefile.in: Regenerate.
 231
 232 2024-05-07  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 233
 234         * testsuite/lib/dg-options.exp (add_options_for_net_ts)
 235         <*-*-solaris2*>: Don't link with -lsocket -lnsl.
 236
 237 2024-05-03  Andreas Schwab  <schwab@linux-m68k.org>
 238
 239         * config/abi/post/powerpc-linux-gnu/baseline_symbols.txt: Update.
 240         * config/abi/post/powerpc64-linux-gnu/32/baseline_symbols.txt: Update.
 241
 242 2024-05-01  Jonathan Wakely  <jwakely@redhat.com>
 243
 244         PR libstdc++/114891
 245         * include/std/generator: Check feature test macro before using
 246         is_pointer_interconvertible_v.
 247
 248 2024-04-30  Christophe Lyon  <christophe.lyon@linaro.org>
 249
 250         * testsuite/lib/gdb-test.exp (gdb-test): Fix regexp.  Quote
 251         newlines in logs.
 252
 253 2024-04-29  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 254
 255         Backported from master:
 256         2024-04-29  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 257
 258         * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
 259         * config/abi/post/i386-solaris/amd64/baseline_symbols.txt:
 260         Likewise.
 261         * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
 262         * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
 263         Likewise.
 264
 265 2024-04-29  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 266
 267         Backported from master:
 268         2024-04-29  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 269
 270         * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
 271         * config/abi/post/i386-solaris/amd64/baseline_symbols.txt:
 272         Likewise.
 273         * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
 274         * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
 275         Likewise.
 276
 277 2024-04-26  Jonathan Wakely  <jwakely@redhat.com>
 278
 279         PR libstdc++/114863
 280         * include/std/format (__formatter_fp::format): Only use
 281         _M_localized for finite values.
 282         * testsuite/std/format/functions/format.cc: Check localized
 283         formatting of NaN and initiny.
 284
 285 2024-04-26  Jonathan Wakely  <jwakely@redhat.com>
 286
 287         * doc/html/manual/status.html: Regenerate.
 288         * doc/xml/manual/status_cxx1998.xml: Adjust whitespace.
 289         * doc/xml/manual/status_cxx2011.xml: Likewise.
 290         * doc/xml/manual/status_cxx2014.xml: Likewise.
 291         * doc/xml/manual/status_cxx2017.xml: Likewise.
 292         * doc/xml/manual/status_cxx2020.xml: Likewise.
 293         * doc/xml/manual/status_cxx2023.xml: Likewise.
 294         * doc/xml/manual/status_cxxtr1.xml: Likewise.
 295         * doc/xml/manual/status_cxxtr24733.xml: Likewise.
 296
 297 2024-04-25  Jonathan Wakely  <jwakely@redhat.com>
 298
 299         * scripts/run_doxygen: Rename man pages for nested types.
 300
 301 2024-04-25  Jonathan Wakely  <jwakely@redhat.com>
 302
 303         * include/std/chrono (tzdb_list): Fix typo in Doxygen comment.
 304
 305 2024-04-25  Jonathan Wakely  <jwakely@redhat.com>
 306
 307         * scripts/run_doxygen: Adjust sed pattern to match '\fR' for
 308         new man output that Doxygen 1.10 generates.
 309
 310 2024-04-25  Jonathan Wakely  <jwakely@redhat.com>
 311
 312         * doc/doxygen/stdheader.cc (init_map): Add missing headers.
 313         * doc/doxygen/user.cfg.in (EXCLUDE): Exclude generated files for
 314         std::format and std::text_encoding.
 315
 316 2024-04-25  Jonathan Wakely  <jwakely@redhat.com>
 317
 318         * include/std/variant: Add comment to #include.
 319
 320 2024-04-22  Matthias Kretz  <m.kretz@gsi.de>
 321
 322         PR libstdc++/114803
 323         * include/experimental/bits/simd_builtin.h
 324         (_SimdBase2::operator __vector_type_t): There is no __builtin()
 325         function in _SimdWrapper, instead use its conversion operator.
 326         * testsuite/experimental/simd/pr114803_vecbuiltin_cvt.cc: New
 327         test.
 328
 329 2024-04-22  Matthias Kretz  <m.kretz@gsi.de>
 330
 331         * include/experimental/bits/simd.h: Ignore -Wnarrowing for
 332         arm_neon.h.
 333         (__int_for_sizeof): Replace tautological compare with checking
 334         for invalid template parameter value.
 335         * include/experimental/bits/simd_builtin.h (__extract_part):
 336         Remove tautological compare by combining two static_assert.
 337
 338 2024-04-22  Jakub Jelinek  <jakub@redhat.com>
 339
 340         * testsuite/17_intro/names.cc (d, f): Undefine on s390*-linux*.
 341         * testsuite/17_intro/headers/c++1998/all_attributes.cc (packed): Don't
 342         define on s390.
 343         * testsuite/17_intro/headers/c++2011/all_attributes.cc (packed):
 344         Likewise.
 345         * testsuite/17_intro/headers/c++2014/all_attributes.cc (packed):
 346         Likewise.
 347         * testsuite/17_intro/headers/c++2017/all_attributes.cc (packed):
 348         Likewise.
 349         * testsuite/17_intro/headers/c++2020/all_attributes.cc (packed):
 350         Likewise.
 351
 352 2024-04-19  Jonathan Wakely  <jwakely@redhat.com>
 353
 354         * include/bits/refwrap.h (operator<=>): Simplify constraints.
 355
 356 2024-04-19  Jonathan Wakely  <jwakely@redhat.com>
 357
 358         PR libstdc++/114770
 359         * src/c++20/tzdb.cc (do_locate_zone): Support links that have
 360         another link as their target.
 361         * testsuite/std/time/tzdb/1.cc: Check that all zones and links
 362         can be found by locate_zone.
 363         * testsuite/std/time/tzdb/links.cc: New test.
 364
 365 2024-04-18  Alexandre Oliva  <oliva@adacore.com>
 366
 367         * testsuite/29_atomics/atomic/compare_exchange_padding.cc:
 368         Disable SRA.
 369
 370 2024-04-18  Alexandre Oliva  <oliva@adacore.com>
 371
 372         * testsuite/20_util/from_chars/8.cc: Skip float128_t testing
 373         on aarch64-vxworks.
 374         * testsuite/20_util/to_chars/float128_c++23.cc: Xfail run on
 375         aarch64-vxworks.
 376
 377 2024-04-18  Alexandre Oliva  <oliva@adacore.com>
 378
 379         * src/c++20/tzdb.cc (__gnu_cxx::zoneinfo_dir_override): Define
 380         on VxWorks non-RTP.
 381
 382 2024-04-17  Jonathan Wakely  <jwakely@redhat.com>
 383
 384         * include/std/ostream (println(ostream&)): Define new overload.
 385         * include/std/print (println(FILE*), println()): Likewise.
 386         * testsuite/27_io/basic_ostream/print/2.cc: New test.
 387         * testsuite/27_io/print/1.cc: Remove unused header.
 388         * testsuite/27_io/print/3.cc: New test.
 389
 390 2024-04-17  Matthias Kretz  <m.kretz@gsi.de>
 391
 392         * include/experimental/bits/numeric_traits.h: Add include guard.
 393
 394 2024-04-17  Matthias Kretz  <m.kretz@gsi.de>
 395
 396         PR libstdc++/114750
 397         * include/experimental/bits/simd_builtin.h
 398         (_SimdImplBuiltin::_S_load, _S_store): Fall back to copying
 399         scalars if the memory type cannot be vectorized for the target.
 400
 401 2024-04-16  Jonathan Wakely  <jwakely@redhat.com>
 402
 403         * config/locale/dragonfly/numeric_members.cc: Fix typos in
 404         comments.
 405         * config/locale/gnu/numeric_members.cc: Likewise.
 406
 407 2024-04-15  Jonathan Wakely  <jwakely@redhat.com>
 408
 409         * doc/xml/manual/abi.xml: Replace "<next>" with "14.1.0".
 410         * doc/html/manual/abi.html: Regenerate.
 411
 412 2024-04-15  Jonathan Wakely  <jwakely@redhat.com>
 413
 414         * include/bits/refwrap.h (reference_wrapper): Add comparison
 415         operators as proposed by P2944R3.
 416         * include/bits/version.def (reference_wrapper): Define.
 417         * include/bits/version.h: Regenerate.
 418         * include/std/functional: Enable feature test macro.
 419         * testsuite/20_util/reference_wrapper/compare.cc: New test.
 420
 421 2024-04-15  Jonathan Wakely  <jwakely@redhat.com>
 422
 423         PR libstdc++/113386
 424         * include/bits/stl_pair.h (operator==, operator<=>): Support
 425         heterogeneous comparisons, as per LWG 3865.
 426         * testsuite/20_util/pair/comparison_operators/lwg3865.cc: New
 427         test.
 428
 429 2024-04-15  Jonathan Wakely  <jwakely@redhat.com>
 430
 431         PR libstdc++/93672
 432         * src/c++98/istream.cc (istream::ignore(streamsize, int_type)):
 433         Treat all negative delimiter values as eof().
 434         * testsuite/27_io/basic_istream/ignore/char/93672.cc: New test.
 435         * testsuite/27_io/basic_istream/ignore/wchar_t/93672.cc: New
 436         test.
 437
 438 2024-04-15  Andreas Schwab  <schwab@suse.de>
 439
 440         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
 441
 442 2024-04-13  H.J. Lu  <hjl.tools@gmail.com>
 443
 444         * config/abi/post/x86_64-linux-gnu/x32/baseline_symbols.txt:
 445         Updated.
 446
 447 2024-04-11  Jakub Jelinek  <jakub@redhat.com>
 448
 449         * doc/xml/manual/abi.xml: Add latest library versions.
 450         * doc/html/manual/abi.html: Regenerate.
 451
 452 2024-04-11  Jakub Jelinek  <jakub@redhat.com>
 453
 454         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
 455         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
 456         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
 457         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
 458         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
 459         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
 460         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
 461         * config/abi/post/powerpc64le-linux-gnu/baseline_symbols.txt: Update.
 462         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
 463
 464 2024-04-11  Jonathan Wakely  <jwakely@redhat.com>
 465
 466         PR libstdc++/114692
 467         * config/abi/pre/gnu.ver (GLIBCXX_3.4.32): Move new exports for
 468         __basic_file::native_handle to ...
 469         (GLIBCXX_3.4.33): ... here. Adjust to not match wchar_t
 470         specialization, which isn't used.
 471         * testsuite/util/testsuite_abi.cc: Add GLIBCXX_3.4.33 and update
 472         latest version check.
 473
 474 2024-04-11  Jakub Jelinek  <jakub@redhat.com>
 475
 476         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
 477         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
 478         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
 479         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
 480         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
 481         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
 482         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
 483         * config/abi/post/powerpc64le-linux-gnu/baseline_symbols.txt: Update.
 484         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
 485
 486 2024-04-10  Jonathan Wakely  <jwakely@redhat.com>
 487
 488         * testsuite/27_io/manipulators/extended/get_time/char/2.cc:
 489         Adjust input string so that it matches %a with or without a
 490         trailing period.
 491         * testsuite/std/time/year_month_day/io.cc: Adjust expected
 492         format for %x in the fr_FR locale.
 493
 494 2024-04-10  Jonathan Wakely  <jwakely@redhat.com>
 495
 496         * src/c++17/fs_ops.cc (remove_all) [__FreeBSD__ || __DragonFly__]:
 497         Check for EMLINK as well as ELOOP.
 498         [__NetBSD__]: Check for EFTYPE as well as ELOOP.
 499
 500 2024-04-09  Jonathan Wakely  <jwakely@redhat.com>
 501
 502         PR libstdc++/114633
 503         * include/bits/chrono_io.h (_Parser::operator()) <'S'>: Use
 504         stream extraction if std::from_chars is not available.
 505
 506 2024-04-08  Jonathan Wakely  <jwakely@redhat.com>
 507
 508         PR libstdc++/114519
 509         * include/bits/unicode.h (_Utf8_view) [!__cpp_char8_t]: Define
 510         using char instead of char8_t.
 511         * testsuite/ext/unicode/view.cc: Use u8""sv literals to create
 512         string views, instead of std::u8string_view.
 513
 514 2024-04-08  Jonathan Wakely  <jwakely@redhat.com>
 515
 516         * testsuite/20_util/integer_comparisons/equal_neg.cc: Use
 517         no-opts selector for errors that depend on -fchar8_t.
 518         * testsuite/20_util/integer_comparisons/greater_equal_neg.cc:
 519         Likewise.
 520         * testsuite/20_util/integer_comparisons/greater_neg.cc:
 521         Likewise.
 522         * testsuite/20_util/integer_comparisons/in_range_neg.cc:
 523         Likewise.
 524         * testsuite/20_util/integer_comparisons/less_equal_neg.cc:
 525         Likewise.
 526         * testsuite/20_util/integer_comparisons/less_neg.cc: Likewise.
 527         * testsuite/20_util/integer_comparisons/not_equal_neg.cc:
 528         Likewise.
 529         * testsuite/21_strings/basic_string/hash/hash_char8_t.cc: Skip
 530         if -fno-char8_t is used.
 531         * testsuite/21_strings/headers/cuchar/functions_std_cxx20.cc:
 532         Likewise.
 533         * testsuite/27_io/basic_ostream/inserters_character/char/deleted.cc:
 534         Likewise.
 535         * testsuite/27_io/basic_ostream/inserters_character/wchar_t/deleted.cc:
 536         Likewise.
 537         * testsuite/27_io/filesystem/path/factory/u8path-depr.cc: Use
 538         char for u8 literal if char8_t is not available.
 539         * testsuite/27_io/headers/iosfwd/synopsis.cc: Check
 540         __cpp_char8_t.
 541         * testsuite/29_atomics/atomic_integral/wait_notify.cc: Likewise.
 542         * testsuite/29_atomics/headers/atomic/types_std_c++20_neg.cc:
 543         Remove check for _GLIBCXX_USE_CHAR8_T.
 544
 545 2024-04-08  Jonathan Wakely  <jwakely@redhat.com>
 546
 547         * testsuite/20_util/from_chars/1_neg.cc: Add char8_t cases,
 548         using a struct of that name if -fno-char8_t is active.
 549         * testsuite/20_util/from_chars/1_c++20_neg.cc: Removed.
 550
 551 2024-04-03  Jonathan Wakely  <jwakely@redhat.com>
 552
 553         PR libstdc++/104606
 554         * include/std/optional (operator<=>(const optional<T>&, const U&)):
 555         Reverse order of three_way_comparable_with template arguments.
 556         * testsuite/20_util/optional/relops/104606.cc: New test.
 557
 558 2024-04-02  Jonathan Wakely  <jwakely@redhat.com>
 559
 560         PR libstdc++/114519
 561         * include/bits/unicode.h (_Utf8_view): Guard with check for
 562         char8_t being enabled.
 563         (__literal_encoding_is_unicode): Guard use of char8_t with check
 564         for it being enabled.
 565         * testsuite/std/format/functions/114519.cc: New test.
 566
 567 2024-04-02  Patrick Palka  <ppalka@redhat.com>
 568
 569         * include/std/ranges (ranges::__detail::_Empty): Rename to ...
 570         (ranges::__detail::_Absent): ... this.  Turn into a template
 571         parameterized by the absent type _Tp and discriminator _Disc.
 572         (ranges::__detail::__maybe_present_t): Add an optional
 573         discriminator parameter.
 574         (slide_view::_M_cached_begin): Pass a discriminator argument to
 575         __maybe_present_t.
 576         (slide_view::_M_cached_end): Likewise.
 577         * testsuite/std/ranges/adaptors/sizeof.cc: Verify the size of
 578         slide_view<V> is 3 instead 4 pointers.
 579
 580 2024-04-02  Jakub Jelinek  <jakub@redhat.com>
 581
 582         * acinclude.m4: Fix duplicated words; file file -> file can.
 583         * configure.host: Fix duplicated words; the the -> the.
 584
 585 2024-03-29  Arsen Arsenović  <arsen@aarsen.me>
 586
 587         * testsuite/24_iterators/range_generators/01.cc: Drop GCC
 588         Runtime Library Exception.
 589         * testsuite/24_iterators/range_generators/02.cc: Drop GCC
 590         Runtime Library Exception.
 591         * testsuite/24_iterators/range_generators/copy.cc: Drop GCC
 592         Runtime Library Exception.
 593         * testsuite/24_iterators/range_generators/except.cc: Drop GCC
 594         Runtime Library Exception.
 595         * testsuite/24_iterators/range_generators/subrange.cc: Drop GCC
 596         Runtime Library Exception.
 597         * testsuite/24_iterators/range_generators/synopsis.cc: Drop GCC
 598         Runtime Library Exception.
 599         * testsuite/24_iterators/range_generators/iter_deref_return.cc:
 600         Drop GCC Runtime Library Exception from the "You should have
 601         received a copy" paragraph.
 602
 603 2024-03-27  Matthias Kretz  <m.kretz@gsi.de>
 604
 605         * include/experimental/bits/simd_x86.h (_S_masked_unary):
 606         Cast inputs < 16 bytes to 16 byte vectors before calling the
 607         right subtraction builtin. Before returning, truncate to the
 608         return vector type.
 609
 610 2024-03-27  Matthias Kretz  <m.kretz@gsi.de>
 611
 612         * include/experimental/bits/simd_x86.h (_S_masked_unary): Call
 613         the 4- and 8-byte variants of __builtin_ia32_subp[ds] without
 614         rounding direction argument.
 615
 616 2024-03-27  Srinivas Yadav Singanaboina  <vasu.srinivasvasu.14@gmail.com>
 617
 618         * include/Makefile.am: Add simd_sve.h.
 619         * include/Makefile.in: Add simd_sve.h.
 620         * include/experimental/bits/simd.h: Add new SveAbi.
 621         * include/experimental/bits/simd_builtin.h: Use
 622         __no_sve_deduce_t to support existing Neon Abi.
 623         * include/experimental/bits/simd_converter.h: Convert
 624         sequentially when sve is available.
 625         * include/experimental/bits/simd_detail.h: Define sve
 626         specific macro.
 627         * include/experimental/bits/simd_math.h: Fallback frexp
 628         to execute sequntially when sve is available, to handle
 629         fixed_size_simd return type that always uses sve.
 630         * include/experimental/simd: Include bits/simd_sve.h.
 631         * testsuite/experimental/simd/tests/bits/main.h: Enable
 632         testing for sve128, sve256, sve512.
 633         * include/experimental/bits/simd_sve.h: New file.
 634
 635 2024-03-26  Arsen Arsenović  <arsen@aarsen.me>
 636
 637         * include/std/generator (generator::_Iterator::operator*): Fix
 638         return type.
 639         * testsuite/24_iterators/range_generators/iter_deref_return.cc:
 640         New test.
 641
 642 2024-03-26  Arsen Arsenović  <arsen@aarsen.me>
 643
 644         * include/std/generator: Fix _V badname.
 645
 646 2024-03-26  Jonathan Wakely  <jwakely@redhat.com>
 647
 648         * testsuite/19_diagnostics/stacktrace/current.cc: Check for
 649         __cpp_lib_stacktrace instead of check for stacktrace ET.
 650         * testsuite/19_diagnostics/stacktrace/entry.cc: Likewise.
 651         * testsuite/19_diagnostics/stacktrace/hash.cc: Likewise.
 652         * testsuite/19_diagnostics/stacktrace/output.cc: Likewise.
 653         * testsuite/19_diagnostics/stacktrace/stacktrace.cc: Likewise.
 654         * testsuite/19_diagnostics/stacktrace/synopsis.cc: Likewise.
 655         * testsuite/19_diagnostics/stacktrace/version.cc: Likewise.
 656         * testsuite/23_containers/vector/debug/assign4_backtrace_neg.cc:
 657         Likewise.
 658         * testsuite/lib/libstdc++.exp (check_effective_target_stacktrace):
 659         Remove.
 660
 661 2024-03-26  Jonathan Wakely  <jwakely@redhat.com>
 662
 663         * testsuite/lib/dg-options.exp (dg-require-cpp-feature-test):
 664         New proc.
 665         * testsuite/lib/libstdc++.exp (check_v3_target_cpp_feature_test):
 666         New proc.
 667         * testsuite/std/text_encoding/cons.cc: Use new directive to skip
 668         the test if the __cpp_lib_text_encoding feature test macro is
 669         not defined.
 670         * testsuite/std/text_encoding/requirements.cc: Likewise.
 671
 672 2024-03-25  Jonathan Wakely  <jwakely@redhat.com>
 673
 674         * testsuite/std/text_encoding/requirements.cc: #undef the
 675         correct macro.
 676
 677 2024-03-23  Jonathan Wakely  <jwakely@redhat.com>
 678
 679         * include/std/format (formatter): Disable specializations that
 680         would allow sequences of narrow characters to be formatted as
 681         wchar_t without conversion, as per LWG 3944.
 682         * testsuite/std/format/formatter/lwg3944.cc: New test.
 683
 684 2024-03-23  Jonathan Wakely  <jwakely@redhat.com>
 685
 686         * include/bits/utility.h (__is_in_place_index_v): New variable
 687         template.
 688         * include/std/variant (__not_in_place_tag): Define in terms of
 689         variable templates not a class template.
 690
 691 2024-03-23  Jonathan Wakely  <jwakely@redhat.com>
 692
 693         PR libstdc++/114400
 694         * include/std/string_view (operator==): Use std::type_identity_t
 695         in C++20 instead of our own __type_identity_t.
 696
 697 2024-03-22  Jonathan Wakely  <jwakely@redhat.com>
 698
 699         PR libstdc++/114401
 700         * include/bits/hashtable.h (_Hashtable::_M_reinsert_node): Call
 701         release() on node handle instead of just zeroing its pointer.
 702         (_Hashtable::_M_reinsert_node_multi): Likewise.
 703         (_Hashtable::_M_merge_unique): Likewise.
 704         (_Hashtable::_M_merge_multi): Likewise.
 705         * include/bits/node_handle.h (_Node_handle_common::release()):
 706         New member function.
 707         (_Node_handle_common::_Optional_alloc::_M_empty): Remove
 708         unnecessary union member.
 709         (_Node_handle_common): Declare _Hashtable as a friend.
 710         * include/bits/stl_tree.h (_Rb_tree::_M_reinsert_node_unique):
 711         Call release() on node handle instead of just zeroing its
 712         pointer.
 713         (_Rb_tree::_M_reinsert_node_equal): Likewise.
 714         (_Rb_tree::_M_reinsert_node_hint_unique): Likewise.
 715         (_Rb_tree::_M_reinsert_node_hint_equal): Likewise.
 716         * testsuite/23_containers/multiset/modifiers/114401.cc: New test.
 717         * testsuite/23_containers/set/modifiers/114401.cc: New test.
 718         * testsuite/23_containers/unordered_multiset/modifiers/114401.cc: New test.
 719         * testsuite/23_containers/unordered_set/modifiers/114401.cc: New test.
 720
 721 2024-03-22  Jonathan Wakely  <jwakely@redhat.com>
 722
 723         PR libstdc++/113841
 724         * include/bits/allocator.h (allocator<cv T>): Add default
 725         constructor to partial specializations for cv-qualified types.
 726         * include/bits/stl_vector.h (_Vector_impl::_Vector_impl()):
 727         Constrain so that it's only present if the allocator is default
 728         constructible.
 729         * include/bits/stl_bvector.h (_Bvector_impl::_Bvector_impl()):
 730         Likewise.
 731         * testsuite/23_containers/vector/cons/113841.cc: New test.
 732
 733 2024-03-22  Jonathan Wakely  <jwakely@redhat.com>
 734
 735         * include/bits/stl_construct.h (destroy_at, construct_at): Guard
 736         with feature test macros instead of just __cplusplus.
 737
 738 2024-03-22  Jonathan Wakely  <jwakely@redhat.com>
 739
 740         * include/bits/version.def (generator, tuple_like): Move earlier
 741         in the file.
 742         * include/bits/version.h: Regenerate.
 743
 744 2024-03-22  Jonathan Wakely  <jwakely@redhat.com>
 745
 746         PR libstdc++/114394
 747         * include/std/functional (bind): Use __invoke_result_t instead
 748         of result_of::type.
 749         * include/std/type_traits (__invoke_result_t): New alias
 750         template.
 751         * testsuite/20_util/bind/ref_neg.cc: Adjust prune pattern.
 752
 753 2024-03-20  François Dumont  <fdumont@gcc.gnu.org>
 754
 755         * include/bits/version.def (null_iterators): Remove extra_cond.
 756         * include/bits/version.h: Regenerate.
 757
 758 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
 759
 760         PR libstdc++/114359
 761         * include/bits/random.tcc (binomial_distribution::param_type):
 762         Ensure arithmetic is done as type double.
 763         * testsuite/26_numerics/random/binomial_distribution/114359.cc: New test.
 764
 765 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
 766
 767         PR libstdc++/101228
 768         * include/pstl/parallel_backend_tbb.h (TBB_SUPPRESS_DEPRECATED_MESSAGES):
 769         Define before including <tbb/task.h> then undef afterwards.
 770
 771 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
 772
 773         * include/Makefile.am [MAINTAINER_MODE]: Add target to
 774         automatically update <bits/version.h>.
 775         * include/Makefile.in: Regenerate.
 776
 777 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
 778
 779         * doc/xml/manual/build_hacking.xml: Document generated files.
 780         Update list of convenience libraries and sub-directories under
 781         the src directory.
 782         * doc/html/*: Regenerate.
 783
 784 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
 785
 786         * include/bits/text_encoding-data.h: Regenerate.
 787         * include/bits/unicode-data.h: Regenerate.
 788         * scripts/gen_text_encoding_data.py: Fix header of generated
 789         file to name the correct script.
 790
 791 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
 792
 793         * testsuite/util/pstl/test_utils.h: Fix typos in comments.
 794
 795 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
 796
 797         PR libstdc++/114367
 798         * include/bits/stl_bvector.h (_M_allocate): Use allocator's
 799         construct function to begin lifetime of words.
 800
 801 2024-03-19  Iain Sandoe  <iain@sandoe.co.uk>
 802
 803         * testsuite/lib/dg-options.exp (atomic_link_flags): Emit a -B
 804         option for the path to the uninstalled libatomic.
 805
 806 2024-03-19  Iain Sandoe  <iain@sandoe.co.uk>
 807
 808         * testsuite/lib/libstdc++.exp (v3_target_compile): Instead of
 809         /dev/null, use a temporary file for test executables on Darwin.
 810
 811 2024-03-18  François Dumont  <fdumont@gcc.gnu.org>
 812
 813         * include/debug/safe_iterator.tcc (_Safe_iterator<>::_M_can_advance):
 814         Accept 0 offset advance on value-initialized iterator.
 815         * testsuite/23_containers/vector/debug/n3644.cc: New test case.
 816
 817 2024-03-18  François Dumont  <fdumont@gcc.gnu.org>
 818
 819         * include/debug/safe_local_iterator.tcc
 820         (_Safe_local_iterator::_M_valid_range): Add _M_value_initialized and
 821         _M_singular checks.
 822         * testsuite/23_containers/unordered_set/debug/114316.cc: New test case.
 823
 824 2024-03-17  François Dumont  <fdumont@gcc.gnu.org>
 825
 826         PR libstdc++/114316
 827         * include/debug/safe_iterator.tcc (_Safe_iterator<>::_M_valid_range):
 828         First check if both iterators are value-initialized before checking if
 829         singular.
 830         * testsuite/23_containers/set/debug/114316.cc: New test case.
 831         * testsuite/23_containers/vector/debug/114316.cc: New test case.
 832
 833 2024-03-14  Jonathan Wakely  <jwakely@redhat.com>
 834
 835         PR libstdc++/114325
 836         * include/std/format (_Scanner::_M_scan): Pass correct length to
 837         __to_chars_10_impl.
 838         * testsuite/std/format/functions/format.cc: Check negative
 839         integers with empty format-spec.
 840
 841 2024-03-14  Jonathan Wakely  <jwakely@redhat.com>
 842
 843         * include/bits/stl_algo.h (find_end, all_of, none_of, any_of)
 844         (find_if_not, is_partitioned, partition_point, remove)
 845         (remove_if, unique, lower_bound, upper_bound, equal_range)
 846         (binary_search, includes, is_sorted, is_sorted_until, minmax)
 847         (minmax_element, is_permutation, clamp, find_if, find_first_of)
 848         (adjacent_find, count, count_if, search, search_n, min_element)
 849         (max_element): Add nodiscard attribute.
 850         * include/bits/stl_algobase.h (min, max, lower_bound, equal)
 851         (lexicographical_compare, lexicographical_compare_three_way)
 852         (mismatch): Likewise.
 853         * include/bits/stl_heap.h (is_heap, is_heap_until): Likewise.
 854         * testsuite/25_algorithms/equal/debug/1_neg.cc: Add dg-warning.
 855         * testsuite/25_algorithms/equal/debug/2_neg.cc: Likewise.
 856         * testsuite/25_algorithms/equal/debug/3_neg.cc: Likewise.
 857         * testsuite/25_algorithms/find_first_of/concept_check_1.cc:
 858         Likewise.
 859         * testsuite/25_algorithms/is_permutation/2.cc: Likewise.
 860         * testsuite/25_algorithms/lexicographical_compare/71545.cc:
 861         Likewise.
 862         * testsuite/25_algorithms/lower_bound/33613.cc: Likewise.
 863         * testsuite/25_algorithms/lower_bound/debug/irreflexive.cc:
 864         Likewise.
 865         * testsuite/25_algorithms/lower_bound/debug/partitioned_neg.cc:
 866         Likewise.
 867         * testsuite/25_algorithms/lower_bound/debug/partitioned_pred_neg.cc:
 868         Likewise.
 869         * testsuite/25_algorithms/minmax/3.cc: Likewise.
 870         * testsuite/25_algorithms/search/78346.cc: Likewise.
 871         * testsuite/25_algorithms/search_n/58358.cc: Likewise.
 872         * testsuite/25_algorithms/unique/1.cc: Likewise.
 873         * testsuite/25_algorithms/unique/11480.cc: Likewise.
 874         * testsuite/25_algorithms/upper_bound/33613.cc: Likewise.
 875         * testsuite/25_algorithms/upper_bound/debug/partitioned_neg.cc:
 876         Likewise.
 877         * testsuite/25_algorithms/upper_bound/debug/partitioned_pred_neg.cc:
 878         Likewise.
 879         * testsuite/ext/concept_checks.cc: Likewise.
 880         * testsuite/ext/is_heap/47709.cc: Likewise.
 881         * testsuite/ext/is_sorted/cxx0x.cc: Likewise.
 882
 883 2024-03-14  xndcn  <xndchn@gmail.com>
 884
 885         * include/bits/atomic_base.h (__atomic_float::__atomic_float(Fp)):
 886         Clear padding.
 887         * testsuite/29_atomics/atomic_float/compare_exchange_padding.cc:
 888         New test.
 889
 890 2024-03-14  Jonathan Wakely  <jwakely@redhat.com>
 891
 892         PR libstdc++/66146
 893         * doc/xml/manual/status_cxx2011.xml: Remove mention of Linux in
 894         note about std::call_once.
 895         * doc/xml/manual/status_cxx2014.xml: Likewise.
 896         * doc/xml/manual/status_cxx2017.xml: Likewise.
 897         * doc/html/manual/status.html: Regenerate.
 898
 899 2024-03-14  Jonathan Wakely  <jwakely@redhat.com>
 900
 901         * doc/xml/manual/status_cxx2023.xml: Update C++23 status table.
 902         * doc/html/manual/status.html: Regenerate.
 903         * include/bits/version.def: Fix typo in comment.
 904
 905 2024-03-13  Jonathan Wakely  <jwakely@redhat.com>
 906
 907         * testsuite/libstdc++-prettyprinters/cxx11.cc: Move custom_cat
 908         to namespace scope.
 909
 910 2024-03-13  Jonathan Wakely  <jwakely@redhat.com>
 911
 912         * doc/xml/manual/debug.xml: Improve docs on debug builds and
 913         using ASan. Mention _GLIBCXX_ASSERTIONS. Reorder sections to put
 914         the most relevant ones first.
 915         * doc/xml/manual/using.xml: Add comma.
 916         * doc/html/*: Regenerate.
 917
 918 2024-03-13  Jonathan Wakely  <jwakely@redhat.com>
 919
 920         * doc/xml/manual/debug.xml: Document that concept checking might
 921         be removed in future.
 922         * doc/xml/manual/extensions.xml: Likewise.
 923
 924 2024-03-09  Jonathan Wakely  <jwakely@redhat.com>
 925
 926         PR libstdc++/114240
 927         * include/bits/chrono_io.h (_Parser::operator()): Assume
 928         hours(0) for a time_point, so that a time is not required
 929         to be present.
 930         * testsuite/std/time/parse/114240.cc: New test.
 931
 932 2024-03-09  Jonathan Wakely  <jwakely@redhat.com>
 933
 934         PR libstdc++/114279
 935         * include/bits/chrono_io.h (_Parser::_M_is_leap_second): New
 936         data member.
 937         (_Parser::_M_reserved): Reserve padding bits for future use.
 938         (_Parser::operator()): Set _M_is_leap_second if %S reads 60s.
 939         (from_stream): Only allow _M_is_leap_second for utc_time and
 940         local_time. Adjust arithmetic for utc_time so that leap seconds
 941         are preserved. Use time_point_cast to convert to a possibly
 942         lower-precision result type.
 943         * testsuite/std/time/parse.cc: Move to ...
 944         * testsuite/std/time/parse/parse.cc: ... here.
 945         * testsuite/std/time/parse/114279.cc: New test.
 946
 947 2024-03-07  Jonathan Wakely  <jwakely@redhat.com>
 948
 949         * include/bits/chrono_io.h (_Parser::operator()): Use
 950         std::from_chars to parse fractional seconds.
 951
 952 2024-03-07  Jonathan Wakely  <jwakely@redhat.com>
 953
 954         PR libstdc++/114244
 955         * include/bits/chrono_io.h (_Parser::operator()): Remove
 956         redundant uses of duration_cast. Use chrono::round to convert
 957         long double value to durations with integer representations.
 958         Check represenation type when deciding whether to skip parsing
 959         fractional seconds.
 960         * testsuite/20_util/duration/114244.cc: New test.
 961         * testsuite/20_util/duration/io.cc: Check that a floating-point
 962         duration with ratio<1> precision can be parsed.
 963
 964 2024-03-07  Jonathan Wakely  <jwakely@redhat.com>
 965
 966         PR libstdc++/114103
 967         * include/bits/version.def (atomic_lock_free_type_aliases): Add
 968         extra_cond to check for at least one always-lock-free type.
 969         * include/bits/version.h: Regenerate.
 970         * include/std/atomic (atomic_signed_lock_free)
 971         (atomic_unsigned_lock_free): Only use always-lock-free types.
 972         * src/c++20/tzdb.cc (time_zone::_Impl::RulesCounter): Don't use
 973         atomic counter if lock-free aliases aren't available.
 974         * testsuite/29_atomics/atomic/lock_free_aliases.cc: XFAIL for
 975         targets without lock-free word-size compare_exchange.
 976
 977 2024-03-07  Jonathan Wakely  <jwakely@redhat.com>
 978
 979         * include/std/chrono (__get_leap_second_info): Update expiry
 980         time for hardcoded list of leap seconds.
 981         * testsuite/std/time/tzdb/leap_seconds.cc: Update comment.
 982
 983 2024-03-07  Jonathan Wakely  <jwakely@redhat.com>
 984
 985         * testsuite/23_containers/deque/allocator/default_init.cc: Use
 986         std::memset instead of __builtin_memset.
 987         * testsuite/23_containers/forward_list/allocator/default_init.cc:
 988         Likewise.
 989         * testsuite/23_containers/list/allocator/default_init.cc:
 990         Likewise.
 991         * testsuite/23_containers/map/allocator/default_init.cc:
 992         Likewise.
 993         * testsuite/23_containers/set/allocator/default_init.cc:
 994         Likewise.
 995         * testsuite/23_containers/unordered_map/allocator/default_init.cc:
 996         Likewise.
 997         * testsuite/23_containers/unordered_set/allocator/default_init.cc:
 998         Likewise.
 999         * testsuite/23_containers/vector/allocator/default_init.cc:
1000         Likewise.
1001         * testsuite/23_containers/vector/bool/allocator/default_init.cc:
1002         Likewise.
1003         * testsuite/29_atomics/atomic/compare_exchange_padding.cc:
1004         Likewise.
1005         * testsuite/util/atomic/wait_notify_util.h: Likewise.
1006
1007 2024-03-07  Jonathan Wakely  <jwakely@redhat.com>
1008
1009         * include/std/format (_Arg_store::_S_make_elt): Add two
1010         static_assert checks to give more user-friendly error messages.
1011         * testsuite/lib/prune.exp (libstdc++-dg-prune): Prune another
1012         form of "in requirements with" note.
1013         * testsuite/std/format/arguments/args_neg.cc: Check for
1014         user-friendly diagnostics for non-formattable types.
1015         * testsuite/std/format/string_neg.cc: Likewise.
1016
1017 2024-03-04  Jonathan Wakely  <jwakely@redhat.com>
1018
1019         PR libstdc++/114147
1020         * include/std/tuple (tuple::tuple(allocator_arg_t, const Alloc&)):
1021         Add missing overload of allocator-extended default constructor.
1022         (tuple<T1,T2>::tuple(allocator_arg_t, const Alloc&)): Likewise.
1023         * testsuite/20_util/tuple/cons/114147.cc: New test.
1024
1025 2024-02-29  Jonathan Wakely  <jwakely@redhat.com>
1026
1027         * include/std/format (basic_format_arg::handle::__maybe_const_t):
1028         Fix condition to check if const type is formattable.
1029         (basic_format_arg::handle::handle(T&)): Remove redundant
1030         static_assert.
1031         * testsuite/std/format/formatter/basic.cc: New test.
1032
1033 2024-02-29  Jonathan Wakely  <jwakely@redhat.com>
1034
1035         PR libstdc++/113960
1036         * include/bits/stl_algobase.h (__is_byte_iter): Replace with ...
1037         (__memcmp_ordered_with): New concept.
1038         (lexicographical_compare_three_way): Use __memcmp_ordered_with
1039         instead of __is_byte_iter. Use correct length for memcmp.
1040         * testsuite/25_algorithms/lexicographical_compare_three_way/113960.cc:
1041         New test.
1042
1043 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
1044
1045         PR libstdc++/114152
1046         * include/experimental/scope (scope_exit scope_fail): Make
1047         destructor unconditionally noexcept.
1048         (scope_sucess): Fix noexcept-specifier.
1049         * testsuite/experimental/scopeguard/114152.cc: New test.
1050
1051 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
1052
1053         * doc/xml/manual/appendix_contributing.xml: Change URLs to use
1054         https.
1055         * doc/html/manual/*: Regenerate.
1056
1057 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
1058
1059         * doc/xml/manual/appendix_contributing.xml: Replace outdated
1060         info on ChangeLog entries.
1061         * doc/html/manual/appendix_contributing.html: Regenerate.
1062
1063 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
1064
1065         * include/bits/stl_bvector.h (vector<bool, A>::at): Add
1066         nodiscard.
1067         * include/bits/stl_vector.h (vector<T, A>::at): Likewise.
1068         (operator==, operator<=>, operator<, operator!=, operator>)
1069         (operator<=, operator>=): Likewise.
1070         * include/debug/vector (operator==, operator<=>, operator<)
1071         (operator!=, operator>, operator<=, operator>=): Likewise.
1072         * testsuite/23_containers/vector/nodiscard.cc: New test.
1073
1074 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
1075
1076         * include/bits/atomic_base.h (operator|, operator&): Add
1077         noexcept.
1078         * include/bits/fs_fwd.h (operator&, operator|, operator^)
1079         (operator~): Add nodiscard to overloads for copy_options, perms,
1080         perm_options, and directory_options.
1081         * include/bits/ios_base.h (operator&, operator|, operator^)
1082         (operator~): Add nodiscard and noexcept to overloads for
1083         _Ios_Fmtflags, _Ios_Openmode, and _Ios_Iostate.
1084         (operator|=, operator&=, operator^=): Add constexpr for C++14.
1085         * include/bits/regex_constants.h (operator&, operator|, operator^)
1086         (operator~): Add nodiscard and noexcept to overloads for
1087         syntax_option_type and match_flag_type.
1088         (operator|=, operator&=, operator^=): Add noexcept.
1089         * include/std/charconv (operator&, operator|, operator^)
1090         (operator~): Add nodiscard to overloads for chars_format.
1091         * include/std/future (operator&, operator|, operator^)
1092         (operator~): Add nodiscard for overloads for launch.
1093         (operator&=, operator|=, operator^=): Add constexpr for C++14.
1094         * include/experimental/bits/fs_fwd.h  (operator&, operator|)
1095         (operator^, operator~): Add nodiscard to overloads for
1096         copy_options, perms, and directory_options.
1097         * testsuite/27_io/ios_base/types/fmtflags/bitmask_operators.cc:
1098         Add dg-warning for nodiscard warnings.
1099         * testsuite/27_io/ios_base/types/iostate/bitmask_operators.cc:
1100         Likewise.
1101         * testsuite/27_io/ios_base/types/openmode/bitmask_operators.cc:
1102         Likewise.
1103         * testsuite/27_io/filesystem/operations/bitmask_types.cc:
1104         New test.
1105
1106 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
1107
1108         * testsuite/27_io/basic_ostream/print/1.cc: Check error
1109         handling.
1110         * testsuite/27_io/print/1.cc: Likewise.
1111
1112 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
1113
1114         * include/std/ostream (vprint_unicode) [__CYGWIN__]: Use POSIX
1115         code path for Cygwin instead of Windows.
1116         * include/std/print (vprint_unicode) [__CYGWIN__]: Likewise.
1117         * testsuite/27_io/basic_ostream/print/1.cc: Only add -lstdc++exp
1118         for *-*-mingw* targets.
1119         * testsuite/27_io/print/1.cc: Likewise.
1120
1121 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
1122
1123         * include/bits/alloc_traits.h: Include <bits/stl_iterator.h> for
1124         __make_move_if_noexcept_iterator.
1125
1126 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
1127
1128         * include/std/stacktrace: Add nodiscard attribute to all
1129         functions without side effects.
1130
1131 2024-02-20  François Dumont  <fdumont@gcc.gnu.org>
1132
1133         * include/bits/stl_algobase.h (std::__niter_wrap): Add a call to
1134         std::__niter_base on res iterator.
1135
1136 2024-02-19  Iain Sandoe  <iain@sandoe.co.uk>
1137             Jonathan Wakely  <jwakely@redhat.com>
1138
1139         PR target/112397
1140         * configure: Regenerate.
1141         * configure.ac: Detect if we are building for Darwin.
1142         * libsupc++/Makefile.am: If we are building for Darwin, then
1143         suppress hot/cold partitioning for the array allocators.
1144         * libsupc++/Makefile.in: Regenerated.
1145
1146 2024-02-17  François Dumont  <fdumont@gcc.gnu.org>
1147
1148         * include/bits/stl_algobase.h (std::__niter_base): Redefine the overload
1149         definitions for __gnu_debug::_Safe_iterator.
1150         * include/debug/safe_iterator.tcc (std::__niter_base): Adapt declarations.
1151
1152 2024-02-16  Jonathan Wakely  <jwakely@redhat.com>
1153
1154         PR libstdc++/87744
1155         PR libstdc++/113961
1156         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
1157         line number.
1158
1159 2024-02-16  Jonathan Wakely  <jwakely@redhat.com>
1160
1161         PR libstdc++/87744
1162         PR libstdc++/113931
1163         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
1164         line number.
1165
1166 2024-02-16  Jonathan Wakely  <jwakely@redhat.com>
1167
1168         * doc/xml/manual/debug_mode.xml: Update docs for backtraces.
1169         * doc/html/manual/debug_mode_using.html: Regenerate.
1170
1171 2024-02-16  Jonathan Wakely  <jwakely@redhat.com>
1172
1173         * doc/xml/manual/test.xml: Fix spelling of <envar> elements.
1174         * doc/html/manual/test.html: Regenerate.
1175
1176 2024-02-15  Jonathan Wakely  <jwakely@redhat.com>
1177
1178         PR libstdc++/113806
1179         * include/std/bitset (bitset::operator>>=): Remove redundant
1180         call to _M_do_sanitize.
1181
1182 2024-02-15  Jonathan Wakely  <jwakely@redhat.com>
1183
1184         PR libstdc++/113807
1185         * include/std/bitset (bitset::set()): Use memset instead of a
1186         loop over the individual words.
1187
1188 2024-02-15  Jonathan Wakely  <jwakely@redhat.com>
1189
1190         PR libstdc++/113811
1191         * include/bits/stl_algo.h (__rotate): Use unsigned values for
1192         division.
1193
1194 2024-02-15  Jonathan Wakely  <jwakely@redhat.com>
1195
1196         PR libstdc++/99117
1197         * include/std/valarray (valarray::operator=(const _Expr&)):
1198         Use loop to copy instead of __valarray_copy with _Array.
1199         * testsuite/26_numerics/valarray/99117.cc: New test.
1200
1201 2024-02-15  Jonathan Wakely  <jwakely@redhat.com>
1202
1203         * src/c++20/tzdata.zi: Import new file from 2024a release.
1204         * src/c++20/tzdb.cc (tzdb_list::_Node::_S_read_leap_seconds)
1205         Update expiry date for leap seconds list.
1206
1207 2024-02-15  Jonathan Wakely  <jwakely@redhat.com>
1208
1209         PR libstdc++/87744
1210         * include/bits/random.h [!__SIZEOF_INT128__] (_Select_uint_least_t):
1211         Define specialization for 64-bit generators with
1212         non-power-of-two modulus and large constants.
1213         (__mod): Use if constexpr unconditionally.
1214         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
1215         line number.
1216         * testsuite/26_numerics/random/linear_congruential_engine/87744.cc:
1217         New test.
1218
1219 2024-02-14  Gerald Pfeifer  <gerald@pfeifer.com>
1220
1221         * doc/xml/manual/status_cxx2023.xml: Fix C++ item p2442 to be
1222         version 1.
1223         * doc/html/manual/status.html: Regenerate.
1224
1225 2024-02-12  Paul Keir  <paul.keir@uws.ac.uk>
1226
1227         PR libstdc++/113294
1228         * include/bits/basic_string.h (basic_string::operator=): Use
1229         _M_use_local_data() instead of _M_local_buf on the moved-from
1230         string.
1231         * testsuite/21_strings/basic_string/modifiers/constexpr.cc
1232         (test_move): New test.
1233
1234 2024-02-09  Ken Matsui  <kmatsui@gcc.gnu.org>
1235
1236         * include/bits/c++config (_GLIBCXX_HAVE_BUILTIN_IS_SAME):
1237         Removed.
1238         * include/std/type_traits (is_same): Use
1239         _GLIBCXX_USE_BUILTIN_TRAIT instead of
1240         _GLIBCXX_HAVE_BUILTIN_IS_SAME.
1241         (is_same_v): Likewise.
1242
1243 2024-02-08  Jonathan Wakely  <jwakely@redhat.com>
1244
1245         * include/bits/shared_ptr_atomic.h: Fix typo in comment.
1246
1247 2024-02-08  Jonathan Wakely  <jwakely@redhat.com>
1248
1249         PR libstdc++/100147
1250         * include/bits/gslice.h (operator=): Add comment about lack of
1251         self-assignment check.
1252
1253 2024-02-08  Jonathan Wakely  <jwakely@redhat.com>
1254
1255         * include/tr2/type_traits (bases, direct_bases): Use
1256         __has_builtin to check if required built-ins are supported.
1257
1258 2024-02-07  Patrick Palka  <ppalka@redhat.com>
1259
1260         PR testsuite/113710
1261         PR c++/113814
1262         * include/bits/stl_pair.h (tuple_element): Add forward
1263         declaration of the partial specialization for tuple.
1264
1265 2024-02-06  Torbjörn SVENSSON  <torbjorn.svensson@foss.st.com>
1266
1267         * testsuite/lib/libstdc++.exp: Use "nul" for Windows, "/dev/null"
1268         for other environments.
1269
1270 2024-02-04  Jonathan Wakely  <jwakely@redhat.com>
1271
1272         * include/std/format (__format::_Spec::_M_reserved): Define new
1273         bit-field members to reserve padding bits for future extensions.
1274
1275 2024-02-04  Jonathan Wakely  <jwakely@redhat.com>
1276
1277         * src/experimental/Makefile.am: Use libstdc++fsconvenience.a
1278         instead of libstdc++fs.a.
1279         * src/experimental/Makefile.in: Regenerate.
1280         * src/filesystem/Makefile.am: Build libstdc++fsconvenience.a as
1281         well.
1282         * src/filesystem/Makefile.in: Regenerate.
1283
1284 2024-02-04  Jonathan Wakely  <jwakely@redhat.com>
1285
1286         * include/bits/text_encoding-data.h: Regenerate.
1287         * include/bits/unicode-data.h: Regenerate.
1288         * scripts/gen_text_encoding_data.py: Add copyright and license
1289         text to the output.
1290
1291 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
1292
1293         PR libstdc++/113335
1294         * include/bits/std_function.h (__function_guide_helper): Add
1295         partial specialization for explicit object member functions, as
1296         per LWG 3617.
1297         * testsuite/20_util/function/cons/deduction_c++23.cc: Check
1298         explicit object member functions.
1299         * testsuite/30_threads/packaged_task/cons/deduction_c++23.cc:
1300         Likewise.
1301
1302 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
1303
1304         * testsuite/17_intro/names.cc [_AIX]: Undefine "u".
1305
1306 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
1307
1308         * include/experimental/internet (network_v6::network): Define.
1309         (network_v6::hosts): Finish implementing.
1310         (network_v6::to_string): Do not concatenate std::string to
1311         arbitrary std::basic_string specialization.
1312         * testsuite/experimental/net/internet/network/v6/cons.cc: New
1313         test.
1314
1315 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
1316
1317         PR libstdc++/90276
1318         * testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: Fix
1319         comparison function to use less-than instead of equality.
1320
1321 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
1322
1323         PR libstdc++/90276
1324         * testsuite/util/pstl/test_utils.h (reverse_invoker): Do not use
1325         perfect forwarding for iterator arguments.
1326
1327 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
1328
1329         * include/std/string_view (basic_string_view(R&&)): Remove
1330         constraint that traits_type must be the same, as per LWG 3857.
1331         * testsuite/21_strings/basic_string_view/cons/char/range_c++20.cc:
1332         Explicit conversion between different specializations should be
1333         allowed.
1334         * testsuite/21_strings/basic_string_view/cons/wchar_t/range_c++20.cc:
1335         Likewise.
1336
1337 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
1338
1339         * include/std/syncstream (basic_osyncstream::operator=): Remove
1340         noexcept, as per LWG 3867.
1341
1342 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
1343
1344         * include/std/generator (promise_type::yield_value): Remove
1345         noexcept from fourth overload, as per LWG 3894.
1346
1347 2024-02-01  Patrick Palka  <ppalka@redhat.com>
1348
1349         PR libstdc++/113309
1350         PR libstdc++/109203
1351         * include/bits/ranges_util.h (__detail::__pair_like): Don't
1352         define in C++23 mode.
1353         (__detail::__pair_like_convertible_from): Adjust as per P2165R4.
1354         (__detail::__is_subrange<subrange>): Moved from <ranges>.
1355         (__detail::__is_tuple_like_v<subrange>): Likewise.
1356         * include/bits/stl_iterator.h: Include <bits/utility.h> for
1357         C++23.
1358         (__different_from): Move to <concepts>.
1359         (__iter_key_t): Adjust for C++23 as per P2165R4.
1360         (__iter_val_t): Likewise.
1361         * include/bits/stl_pair.h (pair, array): Forward declare.
1362         (get): Forward declare all overloads relevant to P2165R4
1363         tuple-like constructors.
1364         (__is_tuple_v): Define for C++23.
1365         (__is_tuple_like_v): Define for C++23.
1366         (__tuple_like): Define for C++23 as per P2165R4.
1367         (__pair_like): Define for C++23 as per P2165R4.
1368         (__eligibile_tuple_like): Define for C++23.
1369         (__eligibile_pair_like): Define for C++23.
1370         (pair::_S_constructible_from_pair_like): Define for C++23.
1371         (pair::_S_convertible_from_pair_like): Define for C++23.
1372         (pair::_S_dangles_from_pair_like): Define for C++23.
1373         (pair::pair): Define overloads taking a tuple-like type for
1374         C++23 as per P2165R4.
1375         (pair::_S_assignable_from_tuple_like): Define for C++23.
1376         (pair::_S_const_assignable_from_tuple_like): Define for C++23.
1377         (pair::operator=): Define overloads taking a tuple-like type for
1378         C++23 as per P2165R4.
1379         * include/bits/utility.h (ranges::__detail::__is_subrange):
1380         Moved from <ranges>.
1381         * include/bits/version.def (tuple_like): Define for C++23.
1382         * include/bits/version.h: Regenerate.
1383         * include/std/concepts (__different_from): Moved from
1384         <bits/stl_iterator.h>.
1385         (ranges::__swap::__adl_swap): Clarify which __detail namespace.
1386         * include/std/map (__cpp_lib_tuple_like): Define C++23.
1387         * include/std/ranges (__detail::__is_subrange): Moved to
1388         <bits/utility.h>.
1389         (__detail::__is_subrange<subrange>): Moved to <bits/ranges_util.h>
1390         (__detail::__has_tuple_element): Adjust for C++23 as per P2165R4.
1391         (__detail::__tuple_or_pair): Remove as per P2165R4.  Replace all
1392         uses with plain tuple as per P2165R4.
1393         * include/std/tuple (__cpp_lib_tuple_like): Define for C++23.
1394         (__tuple_like_tag_t): Define for C++23.
1395         (__tuple_cmp): Forward declare for C++23.
1396         (_Tuple_impl::_Tuple_impl): Define overloads taking
1397         __tuple_like_tag_t and a tuple-like type for C++23.
1398         (_Tuple_impl::_M_assign): Likewise.
1399         (tuple::__constructible_from_tuple_like): Define for C++23.
1400         (tuple::__convertible_from_tuple_like): Define for C++23.
1401         (tuple::__dangles_from_tuple_like): Define for C++23.
1402         (tuple::tuple): Define overloads taking a tuple-like type for
1403         C++23 as per P2165R4.
1404         (tuple::__assignable_from_tuple_like): Define for C++23.
1405         (tuple::__const_assignable_from_tuple_like): Define for C++23.
1406         (tuple::operator=): Define overloads taking a tuple-like type
1407         for C++23 as per P2165R4.
1408         (tuple::__tuple_like_common_comparison_category): Define for C++23.
1409         (tuple::operator<=>): Define overload taking a tuple-like type
1410         for C++23 as per P2165R4.
1411         (array, get): Forward declarations moved to <bits/stl_pair.h>.
1412         (tuple_cat): Constrain with __tuple_like for C++23 as per P2165R4.
1413         (apply): Likewise.
1414         (make_from_tuple): Likewise.
1415         (__tuple_like_common_reference): Define for C++23.
1416         (basic_common_reference): Adjust as per P2165R4.
1417         (__tuple_like_common_type): Define for C++23.
1418         (common_type): Adjust as per P2165R4.
1419         * include/std/unordered_map (__cpp_lib_tuple_like): Define for
1420         C++23.
1421         * include/std/utility (__cpp_lib_tuple_like): Define for C++23.
1422         * testsuite/std/ranges/zip/1.cc (test01): Adjust to handle pair
1423         and 2-tuple interchangeably.
1424         (test05): New test.
1425         * testsuite/20_util/pair/p2165r4.cc: New test.
1426         * testsuite/20_util/tuple/p2165r4.cc: New test.
1427
1428 2024-02-01  Patrick Palka  <ppalka@redhat.com>
1429
1430         * include/bits/stl_pair.h (pair::_S_const_assignable): Define,
1431         factored out from ...
1432         (pair::operator=): ... the constraints of the const overloads.
1433
1434 2024-02-01  Jonathan Wakely  <jwakely@redhat.com>
1435
1436         * include/bits/version.tpl: Do not use def-file-line for each
1437         macro being defined.
1438         * include/bits/version.h: Regenerate.
1439
1440 2024-02-01  Jonathan Wakely  <jwakely@redhat.com>
1441
1442         * testsuite/25_algorithms/copy/debug/constexpr_neg.cc: Adjust
1443         dg-error pattern.
1444         * testsuite/25_algorithms/copy_backward/debug/constexpr_neg.cc:
1445         Likewise.
1446         * testsuite/25_algorithms/equal/debug/constexpr_neg.cc:
1447         Likewise.
1448         * testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_neg.cc:
1449         Likewise.
1450         * testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_pred_neg.cc:
1451         Likewise.
1452         * testsuite/25_algorithms/lower_bound/debug/constexpr_valid_range_neg.cc:
1453         Likewise.
1454         * testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_neg.cc:
1455         Likewise.
1456         * testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_pred_neg.cc:
1457         Likewise.
1458         * testsuite/25_algorithms/upper_bound/debug/constexpr_valid_range_neg.cc:
1459         Likewise.
1460
1461 2024-02-01  Jonathan Wakely  <jwakely@redhat.com>
1462
1463         * include/experimental/internet (network_v4::to_string()):
1464         Remove lambda and use of resize_and_overwrite.
1465
1466 2024-01-31  Jonathan Wakely  <jwakely@redhat.com>
1467
1468         * acinclude.m4 (GLIBCXX_CHECK_TEXT_ENCODING): Use <xlocale.h> if
1469         needed for newlocale.
1470         * configure: Regenerate.
1471         * src/c++26/text_encoding.cc: Use <xlocale.h>.
1472
1473 2024-01-31  Jonathan Wakely  <jwakely@redhat.com>
1474             Ewan Higgs  <ewan.higgs@gmail.com>
1475
1476         * include/bits/text_encoding-data.h: Regenerate.
1477         * scripts/gen_text_encoding_data.py: Add extra_aliases dict
1478         containing "ASCII".
1479         * testsuite/std/text_encoding/cons.cc: Check "ascii" is known.
1480
1481 2024-01-31  Jonathan Wakely  <jwakely@redhat.com>
1482
1483         * doc/xml/manual/using.xml: Update tables of supported headers.
1484         * doc/html/*: Regenerate.
1485
1486 2024-01-31  Jonathan Wakely  <jwakely@redhat.com>
1487
1488         * include/std/bitset (_Base_bitset::_M_do_to_ullong): Avoid
1489         -Wshift-count-overflow warning.
1490
1491 2024-01-30  Jonathan Wakely  <jwakely@redhat.com>
1492
1493         * testsuite/std/time/clock/gps/io.cc: Fix expected result in
1494         assertion and call test_format() from main.
1495
1496 2024-01-29  François Dumont  <fdumont@gcc.gnu.org>
1497
1498         * doc/xml/manual/debug_mode.xml: Link against libstdc++exp.a to use
1499         _GLIBCXX_DEBUG_BACKTRACE macro.
1500
1501 2024-01-24  Huanghui Nie  <nnnjkk@gmail.com>
1502             Théo Papadopoulo   <papadopoulo@gmail.com>
1503
1504         * include/bits/hashtable.h (_Hahstable<>::_M_remove_bucket_begin): Remove
1505         _M_before_begin check and cleanup implementation.
1506
1507 2024-01-22  Jonathan Wakely  <jwakely@redhat.com>
1508
1509         * testsuite/std/time/clock/file/io.cc: Fix expected result in
1510         assertion and call test_format() from main.
1511
1512 2024-01-21  Jonathan Wakely  <jwakely@redhat.com>
1513
1514         PR libstdc++/113500
1515         * include/bits/chrono_io.h (__formatter_chrono::_M_S): Fix
1516         printing of subseconds with floating-point rep.
1517         (__formatter_chrono::_M_format_to_ostream): Do not write
1518         time_point specializations directly to the ostream.
1519         (formatter<chrono::sys_time<D>, C>::parse): Do not allow an
1520         empty chrono-spec if the type fails to meet the constraints for
1521         writing to an ostream with operator<<.
1522         * testsuite/std/time/clock/file/io.cc: Check formatting
1523         non-integral times with empty chrono-specs.
1524         * testsuite/std/time/clock/gps/io.cc: Likewise.
1525         * testsuite/std/time/clock/utc/io.cc: Likewise.
1526         * testsuite/std/time/hh_mm_ss/io.cc: Likewise.
1527
1528 2024-01-21  Jonathan Wakely  <jwakely@redhat.com>
1529
1530         * include/bits/chrono.h (__file_clock::from_sys)
1531         (__file_clock::to_sys, __file_clock::_S_from_sys)
1532         (__file_clock::_S_to_sys): Use common_type for return type.
1533         * testsuite/std/time/clock/file/members.cc: Check round trip
1534         conversion for time with lower precision that seconds.
1535
1536 2024-01-21  Jonathan Wakely  <jwakely@redhat.com>
1537
1538         PR libstdc++/113512
1539         * include/std/format (__formatter_fp::format): Fix logic for
1540         alternate forms.
1541         * testsuite/std/format/functions/format.cc: Check buggy cases of
1542         alternate forms with g presentation type.
1543
1544 2024-01-20  Marek Polacek  <polacek@redhat.com>
1545
1546         PR c++/111410
1547         * include/std/ranges: Add #pragma to disable -Wdangling-reference with
1548         std::ranges::views::__adaptor::operator|.
1549
1550 2024-01-19  Jonathan Wakely  <jwakely@redhat.com>
1551
1552         * include/std/format (_Spec::_M_parse_fill_and_align): Do not
1553         use CTAD for _Utf32_view.
1554
1555 2024-01-19  Jonathan Wakely  <jwakely@redhat.com>
1556
1557         PR libstdc++/108822
1558         * include/std/tuple (__glibcxx_no_dangling_refs) [C++17]: Fix
1559         wrong fold-operator.
1560         * testsuite/20_util/tuple/dangling_ref.cc: Check tuples with one
1561         element and three elements. Check allocator-extended
1562         constructors.
1563
1564 2024-01-19  Patrick Palka  <ppalka@redhat.com>
1565
1566         * include/precompiled/stdc++.h [_GLIBCXX_HOSTED]: Include
1567         <print> and <text_encoding> for C++23 and C++26 respectively.
1568
1569 2024-01-18  Patrick Palka  <ppalka@redhat.com>
1570
1571         * include/bits/stl_pair.h [__cplusplus > 202002L]:
1572         Guard P2321R2 changes with __glibcxx_ranges_zip instead.
1573
1574 2024-01-18  Patrick Palka  <ppalka@redhat.com>
1575
1576         * include/std/tuple [__cplusplus > 202002L]: Guard P2321R2
1577         changes with __cpp_lib_ranges_zip instead.
1578
1579 2024-01-18  Patrick Palka  <ppalka@redhat.com>
1580
1581         PR libstdc++/109536
1582         * include/debug/safe_base.h (_Safe_sequence_base::_M_swap):
1583         Remove _GLIBCXX20_CONSTEXPR from non-inline member function.
1584         * include/debug/safe_iterator.h
1585         (_GLIBCXX20_CONSTEXPR_NON_LITERAL_SCOPE_BEGIN): Define.
1586         (_GLIBCXX20_CONSTEXPR_NON_LITERAL_SCOPE_END): Define.
1587         (_Safe_iterator::operator=): Use them around the code path that
1588         defines a variable of type __gnu_cxx::__scoped_lock.
1589         (_Safe_iterator::operator++): Likewise.
1590         (_Safe_iterator::operator--): Likewise.
1591         (_Safe_iterator::operator+=): Likewise.
1592         (_Safe_iterator::operator-=): Likewise.
1593         * testsuite/23_containers/vector/element_access/constexpr.cc
1594         (test_iterators): Test more iterator operations.
1595         * testsuite/23_containers/vector/bool/element_access/constexpr.cc
1596         (test_iterators): Likewise.
1597         * testsuite/std/ranges/adaptors/all.cc (test08) [_GLIBCXX_DEBUG]:
1598         Remove.
1599
1600 2024-01-18  Jonathan Wakely  <jwakely@redhat.com>
1601
1602         * include/bits/unicode.h (__charset_alias_match): Initialize
1603         __var_a and __var_b.
1604
1605 2024-01-18  Jonathan Wakely  <jwakely@redhat.com>
1606
1607         PR libstdc++/113450
1608         * testsuite/std/format/functions/format.cc: Use signed char
1609         instead of int8_t.
1610
1611 2024-01-17  Jonathan Wakely  <jwakely@redhat.com>
1612
1613         PR libstdc++/113318
1614         * acinclude.m4 (GLIBCXX_CONFIGURE): Add c++26 directory.
1615         (GLIBCXX_CHECK_TEXT_ENCODING): Define.
1616         * config.h.in: Regenerate.
1617         * configure: Regenerate.
1618         * configure.ac: Use GLIBCXX_CHECK_TEXT_ENCODING.
1619         * include/Makefile.am: Add new headers.
1620         * include/Makefile.in: Regenerate.
1621         * include/bits/locale_classes.h (locale::encoding): Declare new
1622         member function.
1623         * include/bits/unicode.h (__charset_alias_match): New function.
1624         * include/bits/text_encoding-data.h: New file.
1625         * include/bits/version.def (text_encoding): Define.
1626         * include/bits/version.h: Regenerate.
1627         * include/std/text_encoding: New file.
1628         * src/Makefile.am: Add new subdirectory.
1629         * src/Makefile.in: Regenerate.
1630         * src/c++26/Makefile.am: New file.
1631         * src/c++26/Makefile.in: New file.
1632         * src/c++26/text_encoding.cc: New file.
1633         * src/experimental/Makefile.am: Include c++26 convenience
1634         library.
1635         * src/experimental/Makefile.in: Regenerate.
1636         * python/libstdcxx/v6/printers.py (StdTextEncodingPrinter): New
1637         printer.
1638         * scripts/gen_text_encoding_data.py: New file.
1639         * testsuite/22_locale/locale/encoding.cc: New test.
1640         * testsuite/ext/unicode/charset_alias_match.cc: New test.
1641         * testsuite/std/text_encoding/cons.cc: New test.
1642         * testsuite/std/text_encoding/members.cc: New test.
1643         * testsuite/std/text_encoding/requirements.cc: New test.
1644
1645 2024-01-17  Jonathan Wakely  <jwakely@redhat.com>
1646
1647         * include/bits/unicode.h (_Grapheme_cluster_view): Require view.
1648         Do not use CTAD for _Utf32_view.
1649         (__format_width, __truncate): Do not use CTAD.
1650         (enable_borrowed_range<_Utf_view<T, R>>): Define specialization.
1651         (enable_borrowed_range<_Grapheme_cluster_view<R>>): Likewise.
1652
1653 2024-01-17  Patrick Palka  <ppalka@redhat.com>
1654
1655         * include/std/ranges (views::_CartesianProduct::operator()):
1656         Adjust identity case as per P2540R1.
1657         * testsuite/std/ranges/cartesian_product/1.cc (test01):
1658         Adjust expected result of the identity case.
1659
1660 2024-01-15  Patrick Palka  <ppalka@redhat.com>
1661
1662         * include/std/variant (__detail::__variant::_Variadic_union):
1663         Add bool __trivially_destructible template parameter.
1664         (__detail::__variant::_Variadic_union::~_Variadic_union):
1665         Use __trivially_destructible in constraints instead.
1666         (__detail::__variant::_Variant_storage): Pass
1667         __trivially_destructible value to _Variadic_union.
1668
1669 2024-01-15  Patrick Palka  <ppalka@redhat.com>
1670
1671         * include/bits/stl_iterator.h (const_iterator): Define conversion
1672         operators as per P2836R1.
1673         * include/bits/version.def (ranges_as_const): Update value.
1674         * include/bits/version.h: Regenerate.
1675         * testsuite/24_iterators/const_iterator/1.cc (test04): New test.
1676         * testsuite/std/ranges/adaptors/as_const/1.cc: Adjust expected
1677         value of __cpp_lib_ranges_as_const.
1678         * testsuite/std/ranges/version_c++23.cc: Likewise.
1679
1680 2024-01-15  Jonathan Wakely  <jwakely@redhat.com>
1681
1682         PR libstdc++/108822
1683         * include/std/tuple (__assignable, __is_nothrow_assignable):
1684         Move pre-C++20 definitions adjacent to their use.
1685
1686 2024-01-15  Jonathan Wakely  <jwakely@redhat.com>
1687
1688         PR testsuite/113366
1689         * include/std/format (basic_format_arg): Use __formattable
1690         variable template instead of __format::__formattable_with
1691         concept.
1692
1693 2024-01-15  Jonathan Wakely  <jwakely@redhat.com>
1694
1695         * src/c++20/tzdata.zi: Import new file from 2023d release.
1696         * src/c++20/tzdb.cc (tzdb_list::_Node::_S_read_leap_seconds)
1697         Update expiry date for leap seconds list.
1698
1699 2024-01-13  Jonathan Wakely  <jwakely@redhat.com>
1700
1701         PR libstdc++/108822
1702         * include/std/tuple (tuple): Add checks for dangling references.
1703         Reimplement constraints and constant expressions using C++20
1704         features.
1705         * include/std/type_traits [C++20]
1706         (__is_implicitly_default_constructible_v): Define.
1707         (__is_implicitly_default_constructible): Use variable template.
1708         * testsuite/20_util/tuple/dangling_ref.cc: New test.
1709
1710 2024-01-13  Patrick Palka  <ppalka@redhat.com>
1711
1712         PR libstdc++/108827
1713         PR libstdc++/111327
1714         * include/bits/version.def (bind_back): Define.
1715         * include/bits/version.h: Regenerate.
1716         * include/std/functional (_Bind_back): Define for C++23.
1717         (bind_back): Likewise.
1718         * testsuite/20_util/function_objects/bind_back/1.cc: New test
1719         (adapted from corresponding bind_front test).
1720         * testsuite/20_util/function_objects/bind_back/111327.cc: Likewise.
1721
1722 2024-01-13  Patrick Palka  <ppalka@redhat.com>
1723
1724         * include/std/functional (_Bind_front): Remove =default special
1725         member function declarations.
1726         (_Bind_front::operator()): Implement using C++23 deducing this
1727         when available.
1728         * testsuite/20_util/function_objects/bind_front/111327.cc:
1729         Adjust testcase to expect better errors in C++23 mode.
1730
1731 2024-01-13  Patrick Palka  <ppalka@redhat.com>
1732
1733         * include/std/ranges (views::__adaptor::operator|): Perform
1734         perfect forwarding of arguments.
1735         (views::__adaptor::_RangeAdaptor::operator()): Pass dummy
1736         first argument to _Partial.
1737         (views::__adaptor::_Partial::_Partial): Likewise.  Add dummy
1738         first parameter.
1739         (views::__adaptor::_Pipe::_Pipe): Perform perfect forwarding
1740         of arguments.
1741         (to): Pass dummy first argument to _Partial.
1742
1743 2024-01-13  Jonathan Wakely  <jwakely@redhat.com>
1744
1745         PR libstdc++/107466
1746         * include/bits/random.tcc (subtract_with_carry_engine::seed):
1747         Implement proposed resolution of LWG 4014.
1748         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
1749         line number.
1750         * testsuite/26_numerics/random/subtract_with_carry_engine/cons/lwg3809.cc:
1751         Check for expected result of 64-bit engine with seed that
1752         doesn't fit in 32-bits.
1753
1754 2024-01-12  Jonathan Wakely  <jwakely@redhat.com>
1755
1756         PR libstdc++/113320
1757         * include/std/format (__format::_Runtime_format_string): Add
1758         constructor and disable copy operations.
1759         (basic_format_string(_Runtime_format_string)): Add noexcept and
1760         take parameter by value not rvalue reference.
1761         (runtime_format): Add noexcept.
1762         * testsuite/std/format/runtime_format.cc: Check noexcept. Check
1763         that construction is only possible from prvalues, not xvalues.
1764
1765 2024-01-12  Jonathan Wakely  <jwakely@redhat.com>
1766
1767         PR libstdc++/105505
1768         * include/bits/stl_pair.h (pair::pair(U1&&, U2&&)) [C++23]: Add
1769         default template arguments, as per P1951R1.
1770         * testsuite/20_util/pair/cons/default_tmpl_args.cc: New test.
1771
1772 2024-01-12  Jonathan Wakely  <jwakely@redhat.com>
1773
1774         * include/std/format (__format::_Arg_store): Fix PR number in
1775         comment. Simplify preprocessor code.
1776
1777 2024-01-11  Jonathan Wakely  <jwakely@redhat.com>
1778
1779         * doc/xml/manual/evolution.xml: Fix spelling.
1780         * doc/html/manual/api.html: Regenerate.
1781
1782 2024-01-11  Jonathan Wakely  <jwakely@redhat.com>
1783
1784         * doc/xml/manual/evolution.xml: Document addition of
1785         libstdc++exp.a.
1786         * doc/html/*: Regenerate.
1787
1788 2024-01-11  Marcus Haehnel  <marcus.haehnel@kernkonzept.com>
1789
1790         * libsupc++/eh_unex_handler.cc: Adjust definition type to
1791         declaration.
1792
1793 2024-01-11  Michael Levine  <mlevine55@bloomberg.net>
1794
1795         * include/std/ranges (__glibcxx_want_ranges_iota): Remove
1796         duplicate definition.
1797
1798 2024-01-11  François Dumont  <fdumont@gcc.gnu.org>
1799
1800         PR libstdc++/112477
1801         * src/c++11/debug.cc
1802         (_Safe_iterator_base::_M_attach): Reset _M_version to 0 if attaching to null
1803         sequence.
1804         (_Safe_iterator_base::_M_attach_single): Likewise.
1805         (_Safe_local_iterator_base::_M_attach): Likewise.
1806         (_Safe_local_iterator_base::_M_attach_single): Likewise.
1807         * testsuite/23_containers/map/debug/112477.cc: New test case.
1808
1809 2024-01-11  Patrick Palka  <ppalka@redhat.com>
1810
1811         * include/bits/move.h (__like_t): Define in C++23 mode.
1812         * include/std/ranges (views::__adaptor::Partial::operator()):
1813         Implement using C++23 deducing this when available.
1814         (views::__adaptor::_Pipe::operator()): Likewise.
1815         * testsuite/std/ranges/adaptors/100577.cc: Adjust testcase to
1816         accept new "no match for call" errors issued in C++23 mode.
1817         * testsuite/std/ranges/adaptors/lazy_split_neg.cc: Likewise.
1818
1819 2024-01-11  Jonathan Wakely  <jwakely@redhat.com>
1820
1821         * python/libstdcxx/v6/printers.py (StdIntegralConstantPrinter):
1822         Add printer for std::integral_constant.
1823         * testsuite/libstdc++-prettyprinters/cxx11.cc: Test it.
1824
1825 2024-01-11  Jonathan Wakely  <jwakely@redhat.com>
1826
1827         PR libstdc++/113258
1828         * libsupc++/new_opa.cc: Prefer to use posix_memalign if
1829         available.
1830
1831 2024-01-11  Ken Matsui  <kmatsui@gcc.gnu.org>
1832
1833         * src/filesystem/ops-common.h (stat_type): Use using.
1834
1835 2024-01-11  Ken Matsui  <kmatsui@gcc.gnu.org>
1836
1837         PR libstdc++/113250
1838         * src/c++17/fs_ops.cc (fs::equivalent): Use || instead of &&.
1839         * src/filesystem/ops.cc (fs::equivalent): Likewise.
1840         * testsuite/27_io/filesystem/operations/equivalent.cc: Handle
1841         error codes.
1842         * testsuite/experimental/filesystem/operations/equivalent.cc:
1843         Likewise.
1844
1845 2024-01-11  Ken Matsui  <kmatsui@gcc.gnu.org>
1846
1847         * include/std/type_traits (is_compound): Do not use __not_.
1848         (is_compound_v): Use is_fundamental_v instead.
1849
1850 2024-01-11  Patrick Palka  <ppalka@redhat.com>
1851
1852         * include/bits/utility.h (_Nth_type): Use
1853         _GLIBCXX_USE_BUILTIN_TRAIT instead of __has_builtin.
1854
1855 2024-01-09  Jonathan Wakely  <jwakely@redhat.com>
1856
1857         * include/bits/unicode-data.h: Regenerate.
1858         * include/bits/unicode.h (_Utf_iterator::operator++()): Fix off
1859         by one error.
1860         (__incb_property): Add missing check for values before the
1861         first edge.
1862         (__is_extended_pictographic): Invert return values to fix
1863         copy&pasted logic.
1864         (_Grapheme_cluster_view::_Iterator): Remove second iterator
1865         member and find end of cluster lazily.
1866         * testsuite/ext/unicode/grapheme_view.cc: New test.
1867         * testsuite/ext/unicode/properties.cc: New test.
1868         * testsuite/ext/unicode/view.cc: New test.
1869
1870 2024-01-09  Andreas Schwab  <schwab@linux-m68k.org>
1871
1872         * scripts/extract_symvers.in: Require final colon to only match
1873         .dsynsym in the header of the dynamic symtab.
1874
1875 2024-01-09  Jonathan Wakely  <jwakely@redhat.com>
1876
1877         * include/bits/chrono_io.h (__formatter_chrono::_M_F): Simplify
1878         handling of string returned from std::format.
1879         (__formatter_chrono::_M_R_T): Likewise.
1880
1881 2024-01-08  Jonathan Wakely  <jwakely@redhat.com>
1882
1883         * include/bits/unicode.h (__null_sentinel): Remove.
1884         * testsuite/17_intro/names.cc: Add __null_sentinel.
1885
1886 2024-01-08  Jonathan Wakely  <jwakely@redhat.com>
1887
1888         * include/std/format (__format::_Runtime_format_string): Define
1889         new class template.
1890         (basic_format_string): Add non-consteval constructor for runtime
1891         format strings.
1892         (runtime_format): Define new function for C++26.
1893         * testsuite/std/format/runtime_format.cc: New test.
1894
1895 2024-01-08  Jonathan Wakely  <jwakely@redhat.com>
1896
1897         * include/bits/chrono_io.h (__formatter_chrono): Always use
1898         lvalue arguments to make_format_args.
1899         * include/std/format (make_format_args): Change parameter pack
1900         from forwarding references to lvalue references. Remove use of
1901         remove_reference_t which is now unnecessary.
1902         (format_to, formatted_size): Remove incorrect forwarding of
1903         arguments.
1904         * include/std/ostream (print): Remove forwarding of arguments.
1905         * include/std/print (print): Likewise.
1906         * testsuite/20_util/duration/io.cc: Use lvalues as arguments to
1907         make_format_args.
1908         * testsuite/std/format/arguments/args.cc: Likewise.
1909         * testsuite/std/format/arguments/lwg3810.cc: Likewise.
1910         * testsuite/std/format/functions/format.cc: Likewise.
1911         * testsuite/std/format/functions/vformat_to.cc: Likewise.
1912         * testsuite/std/format/string.cc: Likewise.
1913         * testsuite/std/time/day/io.cc: Likewise.
1914         * testsuite/std/time/month/io.cc: Likewise.
1915         * testsuite/std/time/weekday/io.cc: Likewise.
1916         * testsuite/std/time/year/io.cc: Likewise.
1917         * testsuite/std/time/year_month_day/io.cc: Likewise.
1918         * testsuite/std/format/arguments/args_neg.cc: New test.
1919
1920 2024-01-08  Jonathan Wakely  <jwakely@redhat.com>
1921
1922         * include/Makefile.am: Add new headers.
1923         * include/Makefile.in: Regenerate.
1924         * include/bits/unicode.h: New file.
1925         * include/bits/unicode-data.h: New file.
1926         * include/std/format: Include <bits/unicode.h>.
1927         (__literal_encoding_is_utf8): Move to <bits/unicode.h>.
1928         (_Spec::_M_fill): Change type to char32_t.
1929         (_Spec::_M_parse_fill_and_align): Read a Unicode scalar value
1930         instead of a single character.
1931         (__write_padded): Change __fill_char parameter to char32_t and
1932         encode it into the output.
1933         (__formatter_str::format): Use new __unicode::__field_width and
1934         __unicode::__truncate functions.
1935         * include/std/ostream: Adjust namespace qualification for
1936         __literal_encoding_is_utf8.
1937         * include/std/print: Likewise.
1938         * src/c++23/print.cc: Add [[unlikely]] attribute to error path.
1939         * testsuite/ext/unicode/view.cc: New test.
1940         * testsuite/std/format/functions/format.cc: Add missing examples
1941         from the standard demonstrating alignment with non-ASCII
1942         characters. Add examples checking correct handling of extended
1943         grapheme clusters.
1944
1945 2024-01-08  Jonathan Wakely  <jwakely@redhat.com>
1946
1947         * include/bits/version.def (format_uchar): Define.
1948         * include/bits/version.h: Regenerate.
1949         * include/std/format (formatter<C, C>::format): Check for
1950         _Pres_c and call _M_format_character directly. Cast C to its
1951         unsigned equivalent for formatting as an integer.
1952         (formatter<char, wchar_t>::format): Likewise.
1953         (basic_format_arg(T&)): Store char arguments as unsigned char
1954         for formatting to a wide string.
1955         * testsuite/std/format/functions/format.cc: Adjust test. Check
1956         formatting of
1957
1958 2024-01-07  Jonathan Wakely  <jwakely@redhat.com>
1959
1960         PR libstdc++/112997
1961         * libsupc++/unwind-cxx.h (__cxa_call_terminate): Change first
1962         parameter to void*.
1963
1964 2024-01-07  Jonathan Wakely  <jwakely@redhat.com>
1965
1966         * testsuite/20_util/variant/87619.cc: Remove dg-timeout-factor.
1967
1968 2024-01-07  Jonathan Wakely  <jwakely@redhat.com>
1969
1970         * include/std/type_traits (is_trivially_destructible_v): Use
1971         built-in directly when concepts are supported.
1972         * testsuite/20_util/is_trivially_destructible/value_v.cc: New
1973         test.
1974
1975 2024-01-06  Gwenole Beauchesne  <gb.devel@gmail.com>
1976
1977         * testsuite/tr1/8_c_compatibility/cinttypes/functions.cc: Use
1978         nonnull arguments to strtoimax() and wcstoimax() functions.
1979
1980 2024-01-05  Jonathan Wakely  <jwakely@redhat.com>
1981
1982         * src/c++17/fs_path.cc (path::_List::reserve): Limit maximum
1983         size and check for overflows in arithmetic.
1984         (path::operator/=(const path&)): Remove redundant exponential
1985         growth calculation.
1986
1987 2024-01-05  Martin Küttler  <martin.kuettler@kernkonzept.com>
1988
1989         * src/c++17/fs_path.cc (path::_List::reserve): Avoid
1990         floating-point arithmetic.
1991
1992 2024-01-05  Jonathan Wakely  <jwakely@redhat.com>
1993
1994         PR libstdc++/113241
1995         * include/std/type_traits (is_convertible_v): Guard use of
1996         built-in with preprocessor check.
1997
1998 2024-01-05  Jonathan Wakely  <jwakely@redhat.com>
1999
2000         PR libstdc++/113200
2001         * include/bits/char_traits.h (__gnu_cxx::char_traits::move): Use
2002         __builtin_constant_p to check for unrelated pointers that cannot
2003         be compared during constant evaluation.
2004         * testsuite/21_strings/char_traits/requirements/113200.cc: New
2005         test.
2006
2007 2024-01-05  Cassio Neri  <cassio.neri@gmail.com>
2008
2009         * include/std/chrono: Fix + and - for months and weekdays.
2010         * testsuite/std/time/month/1.cc: Add constexpr tests against overflow.
2011         * testsuite/std/time/month/2.cc: New test for extreme values.
2012         * testsuite/std/time/weekday/1.cc: Add constexpr tests against overflow.
2013         * testsuite/std/time/weekday/2.cc: New test for extreme values.
2014
2015 2024-01-05  Jonathan Wakely  <jwakely@redhat.com>
2016
2017         PR libstdc++/113099
2018         * include/bits/locale_classes.tcc (__try_use_facet): Use
2019         if-constexpr for C++11 and up.
2020
2021 2024-01-05  Ken Matsui  <kmatsui@gcc.gnu.org>
2022
2023         * include/std/type_traits: Use _GLIBCXX_USE_BUILTIN_TRAIT.
2024
2025 2024-01-04  Arsen Arsenović  <arsen@aarsen.me>
2026
2027         * include/std/generator (_Subyield_state::_M_jump_in): Fix typo
2028         reported by Will Hawkins <hawkinsw@obs.cr>.
2029
2030 2024-01-04  Arsen Arsenović  <arsen@aarsen.me>
2031
2032         * include/std/generator (_Stateless_alloc): Rename typename _A
2033         to _All.
2034
2035 2024-01-03  Patrick Palka  <ppalka@redhat.com>
2036
2037         PR testsuite/113175
2038         * testsuite/std/ranges/iota/max_size_type.cc (test02): Reduce
2039         'limit' to 100 from 1000 and adjust 'log2_limit' accordingly.
2040         (test03): Likewise.
2041
2042 \f
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