libstdc++-v3/ChangeLog

   1 2023-12-18  Patrick Palka  <ppalka@redhat.com>
   2
   3         PR libstdc++/112802
   4         PR libstdc++/113068
   5         * include/std/ranges (__detail::_To::operator()): Add constraints.
   6         (__detail::_To2::operator()): Likewise.
   7         * testsuite/std/ranges/conv/1.cc (test_sfinae): New test.
   8         (test_composition): New test.
   9
  10 2023-12-16  Jonathan Wakely  <jwakely@redhat.com>
  11
  12         * src/c++23/print.cc (__open_terminal(FILE*)): Avoid fileno
  13         macro.
  14
  15 2023-12-16  H.J. Lu  <hjl.tools@gmail.com>
  16
  17         * config/abi/post/x86_64-linux-gnu/x32/baseline_symbols.txt:
  18         Updated.
  19
  20 2023-12-16  Ken Matsui  <kmatsui@gcc.gnu.org>
  21
  22         * include/std/type_traits (remove_pointer): Use __remove_pointer
  23         built-in trait.
  24
  25 2023-12-16  Ken Matsui  <kmatsui@gcc.gnu.org>
  26
  27         * include/std/type_traits (is_object): Use __is_object built-in
  28         trait.
  29         (is_object_v): Likewise.
  30
  31 2023-12-16  Ken Matsui  <kmatsui@gcc.gnu.org>
  32
  33         * include/std/type_traits (is_function): Use __is_function
  34         built-in trait.
  35         (is_function_v): Likewise. Optimize its implementation.  Move
  36         this under is_const_v as this depends on is_const_v.
  37
  38 2023-12-16  Ken Matsui  <kmatsui@gcc.gnu.org>
  39
  40         * include/std/type_traits (is_reference): Use __is_reference
  41         built-in trait.
  42         (is_reference_v): Likewise.
  43
  44 2023-12-16  Ken Matsui  <kmatsui@gcc.gnu.org>
  45
  46         * include/std/type_traits (is_member_object_pointer): Use
  47         __is_member_object_pointer built-in trait.
  48         (is_member_object_pointer_v): Likewise.
  49
  50 2023-12-16  Ken Matsui  <kmatsui@gcc.gnu.org>
  51
  52         * include/std/type_traits (is_member_function_pointer): Use
  53         __is_member_function_pointer built-in trait.
  54         (is_member_function_pointer_v): Likewise.
  55
  56 2023-12-16  Ken Matsui  <kmatsui@gcc.gnu.org>
  57
  58         * include/std/type_traits (is_member_pointer): Use
  59         __is_member_pointer built-in trait.
  60         (is_member_pointer_v): Likewise.
  61
  62 2023-12-16  Ken Matsui  <kmatsui@gcc.gnu.org>
  63
  64         * include/std/type_traits (is_scoped_enum): Use
  65         __is_scoped_enum built-in trait.
  66         (is_scoped_enum_v): Likewise.
  67
  68 2023-12-16  Ken Matsui  <kmatsui@gcc.gnu.org>
  69
  70         * include/std/type_traits (is_bounded_array_v): Use
  71         __is_bounded_array built-in trait.
  72
  73 2023-12-16  Ken Matsui  <kmatsui@gcc.gnu.org>
  74
  75         * include/std/type_traits (is_array): Use __is_array built-in
  76         trait.
  77         (is_array_v): Likewise.
  78
  79 2023-12-15  Jonathan Wakely  <jwakely@redhat.com>
  80
  81         * src/c++23/print.cc (__write_to_terminal) [_WIN32]: If handle
  82         does not refer to the console then just write to it using normal
  83         file I/O.
  84         * testsuite/27_io/print/2.cc (as_printed_to_terminal): Print
  85         error message on failure.
  86         (test_utf16_transcoding): Adjust for as_printed_to_terminal
  87         modifying its argument.
  88
  89 2023-12-15  Jonathan Wakely  <jwakely@redhat.com>
  90
  91         * include/std/ostream (vprint_unicode) [_WIN32]: Use RAII guard.
  92         (vprint_unicode) [!_WIN32]: Just call vprint_nonunicode.
  93         * include/std/print (vprint_unicode) [!_WIN32]: Likewise.
  94
  95 2023-12-15  Jonathan Wakely  <jwakely@redhat.com>
  96
  97         * include/std/ostream (vprint_nonunicode, vprint_unicode): Do
  98         not insert padding.
  99         * testsuite/27_io/basic_ostream/print/1.cc: Adjust expected
 100         behaviour.
 101
 102 2023-12-14  Jonathan Wakely  <jwakely@redhat.com>
 103
 104         PR libstdc++/107760
 105         * include/Makefile.am: Add new header.
 106         * include/Makefile.in: Regenerate.
 107         * include/bits/version.def (__cpp_lib_print): Define.
 108         * include/bits/version.h: Regenerate.
 109         * include/std/format (__literal_encoding_is_utf8): New function.
 110         (_Seq_sink::view()): New member function.
 111         * include/std/ostream (vprintf_nonunicode, vprintf_unicode)
 112         (print, println): New functions.
 113         * include/std/print: New file.
 114         * src/c++23/Makefile.am: Add new source file.
 115         * src/c++23/Makefile.in: Regenerate.
 116         * src/c++23/print.cc: New file.
 117         * testsuite/27_io/basic_ostream/print/1.cc: New test.
 118         * testsuite/27_io/print/1.cc: New test.
 119         * testsuite/27_io/print/2.cc: New test.
 120
 121 2023-12-14  Jonathan Wakely  <jwakely@redhat.com>
 122
 123         * acinclude.m4 (GLIBCXX_CHECK_FILEBUF_NATIVE_HANDLES): Add
 124         missing header to configure test. Check correct variable.
 125         * config/io/basic_file_stdio.cc (__basic_file<char>::native_handle):
 126         Fix typo.
 127         * configure: Regenerate.
 128         * testsuite/27_io/basic_filebuf/native_handle/char/1.cc: Do not
 129         call CloseHandle on the native handle.
 130         * testsuite/27_io/basic_filebuf/native_handle/wchar_t/1.cc:
 131         Likewise.
 132
 133 2023-12-14  Jonathan Wakely  <jwakely@redhat.com>
 134
 135         * include/std/format (_Seq_sink): Fix missing argument in
 136         discarded statement. Add comments, likely/unlikely attributes
 137         and debug assertions as sanity checks.
 138
 139 2023-12-14  Jonathan Wakely  <jwakely@redhat.com>
 140
 141         * testsuite/27_io/objects/char/2.cc: Use dg-output.
 142         * testsuite/27_io/objects/wchar_t/2.cc: Use dg-output.
 143
 144 2023-12-14  Jonathan Wakely  <jwakely@redhat.com>
 145
 146         * include/bits/chrono_io.h (__formatter_chrono::_M_S): Fix order
 147         of arguments to std::format_to.
 148         * testsuite/20_util/duration/io.cc: Test subsecond duration with
 149         floating-point rep.
 150
 151 2023-12-14  Jonathan Wakely  <jwakely@redhat.com>
 152
 153         PR libstdc++/109536
 154         * include/bits/c++config (__glibcxx_constexpr_assert): Remove
 155         macro.
 156         * include/bits/stl_algobase.h (__niter_base, __copy_move_a)
 157         (__copy_move_backward_a, __fill_a, __fill_n_a, __equal_aux)
 158         (__lexicographical_compare_aux): Add constexpr to overloads for
 159         debug mode iterators.
 160         * include/debug/helper_functions.h (__unsafe): Add constexpr.
 161         * include/debug/macros.h (_GLIBCXX_DEBUG_VERIFY_COND_AT): Remove
 162         macro, folding it into ...
 163         (_GLIBCXX_DEBUG_VERIFY_AT_F): ... here. Do not use
 164         __glibcxx_constexpr_assert.
 165         * include/debug/safe_base.h (_Safe_iterator_base): Add constexpr
 166         to some member functions. Omit attaching, detaching and checking
 167         operations during constant evaluation.
 168         * include/debug/safe_container.h (_Safe_container): Likewise.
 169         * include/debug/safe_iterator.h (_Safe_iterator): Likewise.
 170         * include/debug/safe_iterator.tcc (__niter_base, __copy_move_a)
 171         (__copy_move_backward_a, __fill_a, __fill_n_a, __equal_aux)
 172         (__lexicographical_compare_aux): Add constexpr.
 173         * include/debug/vector (_Safe_vector, vector): Add constexpr.
 174         Omit safe iterator operations during constant evaluation.
 175         * testsuite/23_containers/vector/bool/capacity/constexpr.cc:
 176         Remove dg-xfail-if for debug mode.
 177         * testsuite/23_containers/vector/bool/cmp_c++20.cc: Likewise.
 178         * testsuite/23_containers/vector/bool/cons/constexpr.cc:
 179         Likewise.
 180         * testsuite/23_containers/vector/bool/element_access/1.cc:
 181         Likewise.
 182         * testsuite/23_containers/vector/bool/element_access/constexpr.cc:
 183         Likewise.
 184         * testsuite/23_containers/vector/bool/modifiers/assign/constexpr.cc:
 185         Likewise.
 186         * testsuite/23_containers/vector/bool/modifiers/constexpr.cc:
 187         Likewise.
 188         * testsuite/23_containers/vector/bool/modifiers/swap/constexpr.cc:
 189         Likewise.
 190         * testsuite/23_containers/vector/capacity/constexpr.cc:
 191         Likewise.
 192         * testsuite/23_containers/vector/cmp_c++20.cc: Likewise.
 193         * testsuite/23_containers/vector/cons/constexpr.cc: Likewise.
 194         * testsuite/23_containers/vector/data_access/constexpr.cc:
 195         Likewise.
 196         * testsuite/23_containers/vector/element_access/constexpr.cc:
 197         Likewise.
 198         * testsuite/23_containers/vector/modifiers/assign/constexpr.cc:
 199         Likewise.
 200         * testsuite/23_containers/vector/modifiers/constexpr.cc:
 201         Likewise.
 202         * testsuite/23_containers/vector/modifiers/swap/constexpr.cc:
 203         Likewise.
 204         * testsuite/23_containers/vector/cons/destructible_debug_neg.cc:
 205         Adjust dg-error line number.
 206
 207 2023-12-13  Jonathan Wakely  <jwakely@redhat.com>
 208
 209         * include/bits/chrono_io.h (__formatter_chrono::_M_C_y_Y): Do
 210         not round century down for %Y formats.
 211
 212 2023-12-12  Jonathan Wakely  <jwakely@redhat.com>
 213
 214         * include/std/format (__do_vformat_to): Handle char separately
 215         from other integral types.
 216         * testsuite/std/format/functions/format.cc: Check for expected
 217         output for char and bool arguments.
 218         * testsuite/std/format/string.cc: Check that 0 filling is
 219         rejected for character and string formats.
 220
 221 2023-12-12  Jonathan Wakely  <jwakely@redhat.com>
 222
 223         * include/bits/chrono_io.h (__formatter_chrono::_M_C_y_Y): Fix
 224         rounding for negative centuries.
 225         * testsuite/std/time/year/io.cc: Check %C for negative years.
 226
 227 2023-12-12  Jonathan Wakely  <jwakely@redhat.com>
 228
 229         * src/c++11/Makefile.am: Remove redundant -std=gnu++11 flags.
 230         * src/c++11/Makefile.in: Regenerate.
 231
 232 2023-12-09  Jonathan Wakely  <jwakely@redhat.com>
 233
 234         PR libstdc++/111826
 235         * include/bits/version.def (format): Update value.
 236         * include/bits/version.h: Regenerate.
 237         * testsuite/std/format/functions/format.cc:
 238
 239 2023-12-09  Jonathan Wakely  <jwakely@redhat.com>
 240
 241         PR libstdc++/112876
 242         * include/std/ranges (ranges::to): Do not try to use an iterator
 243         returned by the container's emplace or insert member functions.
 244         * testsuite/std/ranges/conv/1.cc (Cont4::emplace, Cont4::insert):
 245         Use the iterator parameter. Do not return an iterator.
 246
 247 2023-12-07  Patrick Palka  <ppalka@redhat.com>
 248
 249         * include/std/ranges (__detail::_ToClosure): Replace with ...
 250         (__detail::_To): ... this.
 251         (__detail::_ToClosure2): Replace with ...
 252         (__detail::To2): ... this.
 253         (to): Simplify using the existing _Partial range adaptor
 254         closure object.
 255
 256 2023-12-07  Jonathan Wakely  <jwakely@redhat.com>
 257
 258         * include/std/format (_Iter_sink<charT, contiguous_iterator>):
 259         Remove uint64_t local type.
 260
 261 2023-12-07  Jonathan Wakely  <jwakely@redhat.com>
 262
 263         * include/bits/atomic_wait.h: Include <cstdint> instead of
 264         <stdint.h>.
 265
 266 2023-12-07  Jonathan Wakely  <jwakely@redhat.com>
 267
 268         PR libstdc++/112882
 269         * include/bits/c++config (__is_constant_evaluated): Add
 270         always_inline attribute.
 271         (_GLIBCXX_DO_ASSERT): Remove macro.
 272         (__glibcxx_assert): Define separately for assertions-enabled and
 273         constexpr-only cases.
 274
 275 2023-12-07  Alexandre Oliva  <oliva@adacore.com>
 276
 277         PR libstdc++/112858
 278         * config/os/gnu-linux/os_defines.h
 279         (_GLIBCXX_MAY_HAVE___CXA_THREAD_ATEXIT_IMPL): Define.
 280         * libsupc++/atexit_thread.cc [__GXX_WEAK__ &&
 281         _GLIBCXX_MAY_HAVE___CXA_THREAD_ATEXIT_IMPL]
 282         (__cxa_thread_atexit): Add dynamic detection of
 283         __cxa_thread_atexit_impl.
 284
 285 2023-12-06  Jason Merrill  <jason@redhat.com>
 286
 287         DR 532
 288         PR c++/53499
 289         * testsuite/23_containers/vector/ext_pointer/types/1.cc
 290         * testsuite/23_containers/vector/ext_pointer/types/2.cc
 291         (N::operator-): Make less specialized.
 292
 293 2023-12-06  Alexandre Oliva  <oliva@gnu.org>
 294
 295         Revert:
 296         2023-12-02  Alexandre Oliva  <oliva@adacore.com>
 297
 298         * libsupc++/atexit_thread.cc [__GXX_WEAK__]: Add dynamic
 299         detection of __cxa_thread_atexit_impl.
 300
 301 2023-12-05  Jonathan Wakely  <jwakely@redhat.com>
 302
 303         PR libstdc++/111948
 304         * include/bits/ranges_util.h (subrange): Add constructor to
 305         _Size to aoid setting member in constructor.
 306         * testsuite/std/ranges/subrange/111948.cc: New test.
 307
 308 2023-12-05  Jonathan Wakely  <jwakely@redhat.com>
 309
 310         * include/std/ranges (__detail::__container_insertable): Remove.
 311         (__detail::__container_inserter): Remove.
 312         (ranges::to): Use emplace_back or emplace, as per LWG 4016.
 313         * testsuite/std/ranges/conv/1.cc (Cont4, test_2_1_4): Check for
 314         use of emplace_back and emplace.
 315
 316 2023-12-05  Jonathan Wakely  <jwakely@redhat.com>
 317
 318         * include/bits/c++config (__glibcxx_assert_fail): Declare even
 319         when assertions are not enabled.
 320         (__glibcxx_constexpr_assert): Remove macro.
 321         (__glibcxx_assert_impl): Remove macro.
 322         (_GLIBCXX_ASSERT_FAIL): New macro.
 323         (_GLIBCXX_DO_ASSERT): New macro.
 324         (__glibcxx_assert): Simplify to a single definition that works
 325         at runtime and during constant evaluation.
 326         * testsuite/21_strings/basic_string_view/element_access/char/back_constexpr_neg.cc:
 327         Adjust expected errors.
 328         * testsuite/21_strings/basic_string_view/element_access/char/constexpr_neg.cc:
 329         Likewise.
 330         * testsuite/21_strings/basic_string_view/element_access/char/front_constexpr_neg.cc:
 331         Likewise.
 332         * testsuite/21_strings/basic_string_view/element_access/wchar_t/back_constexpr_neg.cc:
 333         Likewise.
 334         * testsuite/21_strings/basic_string_view/element_access/wchar_t/constexpr_neg.cc:
 335         Likewise.
 336         * testsuite/21_strings/basic_string_view/element_access/wchar_t/front_constexpr_neg.cc:
 337         Likewise.
 338         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/debug.cc:
 339         Likewise.
 340         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/debug.cc:
 341         Likewise.
 342         * testsuite/23_containers/span/back_neg.cc: Likewise.
 343         * testsuite/23_containers/span/front_neg.cc: Likewise.
 344         * testsuite/23_containers/span/index_op_neg.cc: Likewise.
 345         * testsuite/26_numerics/lcm/105844.cc: Likewise.
 346
 347 2023-12-05  Jonathan Wakely  <jwakely@redhat.com>
 348
 349         PR libstdc++/112832
 350         * include/std/format (formatter::set_debug_format): Ensure this
 351         member is defined conditionally for all specializations.
 352         * testsuite/std/format/formatter/112832.cc: New test.
 353
 354 2023-12-05  Will Hawkins  <hawkinsw@obs.cr>
 355             Jonathan Wakely  <jwakely@redhat.com>
 356
 357         * testsuite/20_util/smartptr.adapt/inout_ptr/2.cc: Add check
 358         for LWG Issue 3897.
 359
 360 2023-12-05  Marek Polacek  <polacek@redhat.com>
 361
 362         PR c++/107687
 363         PR c++/110997
 364         * testsuite/18_support/comparisons/categories/zero_neg.cc: Add
 365         dg-prune-output.
 366         * testsuite/std/format/string_neg.cc: Add dg-error.
 367
 368 2023-12-02  Alexandre Oliva  <oliva@adacore.com>
 369
 370         * libsupc++/atexit_thread.cc [__GXX_WEAK__]: Add dynamic
 371         detection of __cxa_thread_atexit_impl.
 372
 373 2023-12-01  Jason Merrill  <jason@redhat.com>
 374
 375         * include/std/bit: Avoid builtins in requires-clauses.
 376         * include/std/variant: Likewise.
 377
 378 2023-12-01  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 379
 380         * configure: Regenerate.
 381
 382 2023-11-30  Jonathan Wakely  <jwakely@redhat.com>
 383
 384         * include/std/ranges (__detail::__toable): Fix incorrect use of
 385         _Range instead of _Cont.
 386         (__detail::_ToClosure, __detail::_ToClosure2): Add missing
 387         constexpr specifier on constructors.
 388         * testsuite/std/ranges/conv/1.cc (_Cont, _Cont2, _Cont3): Remove
 389         unnecessary begin() and end() members.
 390         (test_constexpr): New function to check range adaptors are
 391         usable in constant expressions.
 392
 393 2023-11-29  Thomas Schwinge  <thomas@codesourcery.com>
 394
 395         * testsuite/23_containers/span/at.cc: Fix for '-fno-exceptions'
 396         configurations.
 397
 398 2023-11-28  Jonathan Wakely  <jwakely@redhat.com>
 399
 400         * include/bits/atomic_wait.h: Include <stdint.h>.
 401
 402 2023-11-28  Jonathan Wakely  <jwakely@redhat.com>
 403
 404         * include/bits/stl_uninitialized.h: Fix typo in comment.
 405
 406 2023-11-24  Jan Hubicka  <jh@suse.cz>
 407
 408         PR middle-end/109849
 409         * include/bits/stl_uninitialized.h (__relocate_a_1): Use memcpy instead
 410         of memmove.
 411
 412 2023-11-23  Jonathan Wakely  <jwakely@redhat.com>
 413
 414         PR libstdc++/111055
 415         * include/bits/ranges_base.h (from_range_t): Define new tag
 416         type.
 417         (from_range): Define new tag object.
 418         * include/bits/version.def (ranges_to_container): Define.
 419         * include/bits/version.h: Regenerate.
 420         * include/std/ranges (ranges::to): Define.
 421         * testsuite/std/ranges/conv/1.cc: New test.
 422         * testsuite/std/ranges/conv/2_neg.cc: New test.
 423         * testsuite/std/ranges/conv/version.cc: New test.
 424
 425 2023-11-23  Jonathan Wakely  <jwakely@redhat.com>
 426
 427         * testsuite/util/testsuite_allocator.h (uneq_allocator): Fix
 428         equality operator for heterogeneous comparisons.
 429
 430 2023-11-21  Jonathan Wakely  <jwakely@redhat.com>
 431
 432         * include/bits/version.def (freestanding_cstring): Add.
 433         * include/bits/version.h: Regenerate.
 434         * include/c_compatibility/string.h (strtok): Do not declare for
 435         C++26 freestanding.
 436         * include/c_global/cstring (strtok): Likewise.
 437         * testsuite/21_strings/headers/cstring/version.cc: New test.
 438
 439 2023-11-21  Jonathan Wakely  <jwakely@redhat.com>
 440
 441         * include/bits/version.def (freestanding_algorithm)
 442         (freestanding_array, freestanding_optional)
 443         (freestanding_string_view, freestanding_variant): Add.
 444         * include/bits/version.h: Regenerate.
 445         * include/std/algorithm (__glibcxx_want_freestanding_algorithm):
 446         Define.
 447         * include/std/array (__glibcxx_want_freestanding_array):
 448         Define.
 449         * include/std/optional (__glibcxx_want_freestanding_optional):
 450         Define.
 451         * include/std/string_view
 452         (__glibcxx_want_freestanding_string_view): Define.
 453         * include/std/variant (__glibcxx_want_freestanding_variant):
 454         Define.
 455         * testsuite/20_util/optional/version.cc: Add checks for
 456         __cpp_lib_freestanding_optional.
 457         * testsuite/20_util/variant/version.cc: Add checks for
 458         __cpp_lib_freestanding_variant.
 459         * testsuite/23_containers/array/tuple_interface/get_neg.cc:
 460         Adjust dg-error line numbers.
 461         * testsuite/21_strings/basic_string_view/requirements/version.cc:
 462         New test.
 463         * testsuite/23_containers/array/requirements/version.cc: New
 464         test.
 465         * testsuite/25_algorithms/fill_n/requirements/version.cc: New
 466         test.
 467         * testsuite/25_algorithms/swap_ranges/requirements/version.cc:
 468         New test.
 469
 470 2023-11-21  Jonathan Wakely  <jwakely@redhat.com>
 471
 472         * include/bits/version.def (freestanding_expected): New macro.
 473         (span): Add C++26 value.
 474         * include/bits/version.h: Regenerate.
 475         * include/std/expected (__glibcxx_want_freestanding_expected):
 476         Define.
 477         * include/std/span (span::at): New member function.
 478         * testsuite/20_util/expected/version.cc: Add checks for
 479         __cpp_lib_freestanding_expected.
 480         * testsuite/23_containers/span/2.cc: Moved to...
 481         * testsuite/23_containers/span/version.cc: ...here. Add checks
 482         for __cpp_lib_span in <span> as well as in <version>.
 483         * testsuite/23_containers/span/1.cc: Removed.
 484         * testsuite/23_containers/span/at.cc: New test.
 485
 486 2023-11-21  Jonathan Wakely  <jwakely@redhat.com>
 487
 488         * include/tr2/dynamic_bitset (dynamic_bitset): Pass zero and one
 489         characters to _M_copy_from_string.
 490         * testsuite/tr2/dynamic_bitset/string.cc: New test.
 491
 492 2023-11-21  Jonathan Wakely  <jwakely@redhat.com>
 493
 494         * doc/html/*: Regenerate.
 495         * doc/xml/faq.xml: Remove reference to buildstat.html pages.
 496         * doc/xml/manual/test.xml: Likewise
 497
 498 2023-11-21  Jan Hubicka  <jh@suse.cz>
 499
 500         PR libstdc++/110287
 501         PR middle-end/109811
 502         PR middle-end/109849
 503         * include/bits/stl_vector.h (_M_realloc_append): New member function.
 504         (push_back): Use it.
 505         * include/bits/vector.tcc: (emplace_back): Use it.
 506         (_M_realloc_insert): Let compiler know that new vector size is non-zero.
 507         (_M_realloc_append): New member function.
 508
 509 2023-11-18  Jonathan Wakely  <jwakely@redhat.com>
 510
 511         PR libstdc++/112607
 512         * include/std/format (basic_format_arg::_S_to_arg_type): Check
 513         value_type for basic_string_view and basic_string
 514         specializations.
 515         * testsuite/std/format/arguments/112607.cc: New test.
 516
 517 2023-11-18  Jonathan Wakely  <jwakely@redhat.com>
 518
 519         PR libstdc++/110801
 520         * include/std/format (_Sink_iter::_M_reserve): New member
 521         function.
 522         (_Sink::_Reservation): New nested class.
 523         (_Sink::_M_reserve, _Sink::_M_bump): New virtual functions.
 524         (_Seq_sink::_M_reserve, _Seq_sink::_M_bump): New virtual
 525         overrides.
 526         (_Iter_sink<O, ContigIter>::_M_reserve): Likewise.
 527         (__do_vformat_to): Use new functions to optimize "{}" case.
 528
 529 2023-11-17  Jonathan Wakely  <jwakely@redhat.com>
 530
 531         * config.h.in: Regenerate.
 532
 533 2023-11-17  Jonathan Wakely  <jwakely@redhat.com>
 534
 535         * include/Makefile.am: Add new header.
 536         * include/Makefile.in: Regenerate.
 537         * include/bits/version.def (saturation_arithmetic): Define.
 538         * include/bits/version.h: Regenerate.
 539         * include/std/numeric: Include new header.
 540         * include/bits/sat_arith.h: New file.
 541         * testsuite/26_numerics/saturation/add.cc: New test.
 542         * testsuite/26_numerics/saturation/cast.cc: New test.
 543         * testsuite/26_numerics/saturation/div.cc: New test.
 544         * testsuite/26_numerics/saturation/mul.cc: New test.
 545         * testsuite/26_numerics/saturation/sub.cc: New test.
 546         * testsuite/26_numerics/saturation/version.cc: New test.
 547
 548 2023-11-17  Jonathan Wakely  <jwakely@redhat.com>
 549
 550         * include/std/utility (in_range): Rename _Up parameter to _Res.
 551
 552 2023-11-17  Jonathan Wakely  <jwakely@redhat.com>
 553
 554         * include/bits/out_ptr.h: Add Doxygen comments. Remove a
 555         redundant preprocessor condition.
 556         * testsuite/20_util/smartptr.adapt/version.cc: New test.
 557
 558 2023-11-17  Jonathan Wakely  <jwakely@redhat.com>
 559
 560         * include/bits/chrono_io.h: Fix Doxygen markup.
 561
 562 2023-11-16  Jonathan Wakely  <jwakely@redhat.com>
 563
 564         PR libstdc++/112564
 565         * include/std/stacktrace (formatter::format): Format according
 566         to format-spec.
 567         * include/std/thread (formatter::format): Use _Align_right as
 568         default.
 569         * testsuite/19_diagnostics/stacktrace/output.cc: Check
 570         fill-and-align handling. Change compile test to run.
 571         * testsuite/30_threads/thread/id/output.cc: Check fill-and-align
 572         handling.
 573
 574 2023-11-16  Jonathan Wakely  <jwakely@redhat.com>
 575
 576         PR libstdc++/111667
 577         * include/Makefile.am: Add new header.
 578         * include/Makefile.in: Regenerate.
 579         * include/bits/out_ptr.h: New file.
 580         * include/bits/shared_ptr.h (__is_shared_ptr): Move definition
 581         to here ...
 582         * include/bits/shared_ptr_atomic.h (__is_shared_ptr): ... from
 583         here.
 584         * include/bits/shared_ptr_base.h (__shared_count): Declare
 585         out_ptr_t as a friend.
 586         (_Sp_counted_deleter, __shared_ptr): Likewise.
 587         * include/bits/unique_ptr.h (unique_ptr, unique_ptr<T[], D>):
 588         Declare out_ptr_t and inout_ptr_t as friends.
 589         (__is_unique_ptr): Define new variable template.
 590         * include/bits/version.def (out_ptr): Define.
 591         * include/bits/version.h: Regenerate.
 592         * include/std/memory: Include new header.
 593         * testsuite/20_util/smartptr.adapt/inout_ptr/1.cc: New test.
 594         * testsuite/20_util/smartptr.adapt/inout_ptr/2.cc: New test.
 595         * testsuite/20_util/smartptr.adapt/inout_ptr/shared_ptr_neg.cc:
 596         New test.
 597         * testsuite/20_util/smartptr.adapt/inout_ptr/void_ptr.cc: New
 598         test.
 599         * testsuite/20_util/smartptr.adapt/out_ptr/1.cc: New test.
 600         * testsuite/20_util/smartptr.adapt/out_ptr/2.cc: New test.
 601         * testsuite/20_util/smartptr.adapt/out_ptr/shared_ptr_neg.cc:
 602         New test.
 603         * testsuite/20_util/smartptr.adapt/out_ptr/void_ptr.cc: New
 604         test.
 605
 606 2023-11-16  Jonathan Wakely  <jwakely@redhat.com>
 607
 608         * include/bits/algorithmfwd.h: Do not define standard feature
 609         test macro here.
 610         * include/bits/align.h: Likewise. Test internal macros instead
 611         of standard macros.
 612         * include/bits/alloc_traits.h: Likewise.
 613         * include/bits/allocator.h: Likewise.
 614         * include/bits/atomic_base.h: Likewise.
 615         * include/bits/atomic_timed_wait.h: Likewise.
 616         * include/bits/atomic_wait.h: Likewise.
 617         * include/bits/basic_string.h: Likewise.
 618         * include/bits/basic_string.tcc: Likewise.
 619         * include/bits/char_traits.h: Likewise.
 620         * include/bits/chrono.h: Likewise.
 621         * include/bits/cow_string.h: Likewise.
 622         * include/bits/forward_list.h: Likewise.
 623         * include/bits/hashtable.h: Likewise.
 624         * include/bits/ios_base.h: Likewise.
 625         * include/bits/memory_resource.h: Likewise.
 626         * include/bits/move.h: Likewise.
 627         * include/bits/move_only_function.h: Likewise.
 628         * include/bits/node_handle.h: Likewise.
 629         * include/bits/ptr_traits.h: Likewise.
 630         * include/bits/range_access.h: Likewise.
 631         * include/bits/ranges_algo.h: Likewise.
 632         * include/bits/ranges_cmp.h: Likewise.
 633         * include/bits/ranges_util.h: Likewise.
 634         * include/bits/semaphore_base.h: Likewise.
 635         * include/bits/shared_ptr.h: Likewise.
 636         * include/bits/shared_ptr_atomic.h: Likewise.
 637         * include/bits/shared_ptr_base.h: Likewise.
 638         * include/bits/stl_algo.h: Likewise.
 639         * include/bits/stl_algobase.h: Likewise.
 640         * include/bits/stl_function.h: Likewise.
 641         * include/bits/stl_iterator.h: Likewise.
 642         * include/bits/stl_list.h: Likewise.
 643         * include/bits/stl_map.h: Likewise.
 644         * include/bits/stl_pair.h: Likewise.
 645         * include/bits/stl_queue.h: Likewise.
 646         * include/bits/stl_stack.h: Likewise.
 647         * include/bits/stl_tree.h: Likewise.
 648         * include/bits/stl_uninitialized.h: Likewise.
 649         * include/bits/stl_vector.h: Likewise.
 650         * include/bits/unique_ptr.h: Likewise.
 651         * include/bits/unordered_map.h: Likewise.
 652         * include/bits/uses_allocator_args.h: Likewise.
 653         * include/bits/utility.h: Likewise.
 654         * include/bits/erase_if.h: Add comment.
 655         * include/std/algorithm: Define standard feature test macros
 656         here.
 657         * include/std/atomic: Likewise.
 658         * include/std/array: Likewise.
 659         * include/std/chrono: Likewise.
 660         * include/std/condition_variable: Likewise.
 661         * include/std/deque: Likewise.
 662         * include/std/format: Likewise.
 663         * include/std/functional: Likewise.
 664         * include/std/forward_list: Likewise.
 665         * include/std/ios: Likewise.
 666         * include/std/iterator: Likewise.
 667         * include/std/list: Likewise.
 668         * include/std/map: Likewise.
 669         * include/std/memory: Likewise.
 670         * include/std/numeric: Likewise.
 671         * include/std/queue: Likewise.
 672         * include/std/ranges: Likewise.
 673         * include/std/regex: Likewise.
 674         * include/std/set: Likewise.
 675         * include/std/stack: Likewise.
 676         * include/std/stop_token: Likewise.
 677         * include/std/string: Likewise.
 678         * include/std/string_view:
 679         * include/std/tuple: Likewise.
 680         * include/std/unordered_map:
 681         * include/std/unordered_set:
 682         * include/std/utility: Likewise.
 683         * include/std/vector: Likewise.
 684         * include/std/scoped_allocator: Query internal macros instead of
 685         standard macros.
 686
 687 2023-11-16  Jonathan Wakely  <jwakely@redhat.com>
 688
 689         * testsuite/18_support/byte/requirements.cc: Disable PCH.
 690         * testsuite/18_support/destroying_delete.cc: Likewise.
 691         * testsuite/18_support/source_location/1.cc: Likewise.
 692         * testsuite/18_support/source_location/version.cc: Likewise.
 693         * testsuite/18_support/type_info/constexpr.cc: Likewise.
 694         * testsuite/18_support/uncaught_exceptions/uncaught_exceptions.cc:
 695         Likewise.
 696         * testsuite/19_diagnostics/stacktrace/output.cc: Likewise.
 697         * testsuite/19_diagnostics/stacktrace/synopsis.cc: Likewise.
 698         * testsuite/19_diagnostics/stacktrace/version.cc: Likewise.
 699         * testsuite/20_util/addressof/requirements/constexpr.cc:
 700         Likewise.
 701         * testsuite/20_util/allocator_traits/header-2.cc: Likewise.
 702         * testsuite/20_util/allocator_traits/header.cc: Likewise.
 703         * testsuite/20_util/as_const/1.cc: Likewise. Likewise.
 704         * testsuite/20_util/bitset/cons/constexpr_c++23.cc: Likewise.
 705         * testsuite/20_util/bitset/version.cc: Likewise.
 706         * testsuite/20_util/duration/arithmetic/constexpr_c++17.cc:
 707         Likewise.
 708         * testsuite/20_util/duration_cast/rounding.cc: Likewise.
 709         * testsuite/20_util/enable_shared_from_this/members/weak_from_this.cc:
 710         Likewise.
 711         * testsuite/20_util/exchange/constexpr.cc: Likewise.
 712         * testsuite/20_util/expected/synopsis.cc: Likewise.
 713         * testsuite/20_util/expected/version.cc: Likewise.
 714         * testsuite/20_util/function_objects/bind_front/1.cc: Likewise.
 715         * testsuite/20_util/function_objects/bind_front/2.cc: Likewise.
 716         * testsuite/20_util/function_objects/invoke/3.cc: Likewise.
 717         * testsuite/20_util/function_objects/invoke/4.cc: Likewise.
 718         * testsuite/20_util/function_objects/invoke/constexpr.cc:
 719         Likewise.
 720         * testsuite/20_util/function_objects/invoke/version.cc:
 721         Likewise.
 722         * testsuite/20_util/function_objects/searchers.cc: Likewise.
 723         * testsuite/20_util/integer_comparisons/1.cc: Likewise.
 724         * testsuite/20_util/integer_comparisons/2.cc: Likewise.
 725         * testsuite/20_util/is_bounded_array/value.cc: Likewise.
 726         * testsuite/20_util/is_layout_compatible/value.cc: Likewise.
 727         * testsuite/20_util/is_layout_compatible/version.cc: Likewise.
 728         * testsuite/20_util/is_nothrow_swappable/requirements/explicit_instantiation.cc:
 729         Likewise.
 730         * testsuite/20_util/is_nothrow_swappable/requirements/typedefs.cc:
 731         Likewise.
 732         * testsuite/20_util/is_nothrow_swappable/value.cc: Likewise.
 733         * testsuite/20_util/is_nothrow_swappable/value.h: Likewise.
 734         * testsuite/20_util/is_nothrow_swappable_with/requirements/explicit_instantiation.cc:
 735         Remove redundant checks already tested elsewhere.
 736         * testsuite/20_util/is_nothrow_swappable_with/requirements/typedefs.cc:
 737         Likewise.
 738         * testsuite/20_util/is_nothrow_swappable_with/value.cc: Disable
 739         PCH.
 740         * testsuite/20_util/is_pointer_interconvertible/value.cc:
 741         Likewise.
 742         * testsuite/20_util/is_pointer_interconvertible/version.cc:
 743         Likewise.
 744         * testsuite/20_util/is_scoped_enum/value.cc: Likewise.
 745         * testsuite/20_util/is_scoped_enum/version.cc: Likewise.
 746         * testsuite/20_util/is_swappable/requirements/explicit_instantiation.cc:
 747         Remove redundant checks already tested elsewhere.
 748         * testsuite/20_util/is_swappable/requirements/typedefs.cc:
 749         Remove redundant checks already tested elsewhere.
 750         * testsuite/20_util/is_swappable/value.cc: Disable PCH.
 751         * testsuite/20_util/is_swappable/value.h: Reorder headers.
 752         * testsuite/20_util/is_swappable_with/requirements/explicit_instantiation.cc:
 753         Remove redundant checks already tested elsewhere.
 754         * testsuite/20_util/is_swappable_with/requirements/typedefs.cc:
 755         Remove redundant checks already tested elsewhere.
 756         * testsuite/20_util/is_swappable_with/value.cc: Disable PCH.
 757         * testsuite/20_util/is_unbounded_array/value.cc: Likewise.
 758         * testsuite/20_util/move_only_function/cons.cc: Likewise.
 759         * testsuite/20_util/move_only_function/version.cc: Likewise.
 760         * testsuite/20_util/optional/monadic/and_then.cc: Likewise.
 761         * testsuite/20_util/optional/requirements.cc: Likewise.
 762         * testsuite/20_util/optional/version.cc: Likewise.
 763         * testsuite/20_util/owner_less/void.cc: Likewise.
 764         * testsuite/20_util/reference_from_temporary/value.cc: Likewise.
 765         * testsuite/20_util/reference_from_temporary/version.cc:
 766         Likewise.
 767         * testsuite/20_util/shared_ptr/atomic/atomic_shared_ptr.cc:
 768         Likewise.
 769         * testsuite/20_util/shared_ptr/creation/array.cc: Likewise.
 770         * testsuite/20_util/shared_ptr/creation/overwrite.cc: Likewise.
 771         * testsuite/20_util/shared_ptr/creation/version.cc: Likewise.
 772         * testsuite/20_util/time_point_cast/rounding.cc: Likewise.
 773         * testsuite/20_util/to_chars/constexpr.cc: Likewise.
 774         * testsuite/20_util/to_chars/result.cc: Likewise.
 775         * testsuite/20_util/to_chars/version.cc: Likewise.
 776         * testsuite/20_util/to_underlying/1.cc: Likewise.
 777         * testsuite/20_util/to_underlying/version.cc: Likewise.
 778         * testsuite/20_util/tuple/apply/1.cc: Likewise.
 779         * testsuite/20_util/tuple/cons/constexpr_allocator_arg_t.cc:
 780         Likewise.
 781         * testsuite/20_util/tuple/make_from_tuple/1.cc: Likewise.
 782         * testsuite/20_util/tuple/p2321r2.cc: Likewise.
 783         * testsuite/20_util/tuple/tuple_element_t.cc: Likewise.
 784         * testsuite/20_util/unique_ptr/cons/constexpr_c++20.cc:
 785         Likewise.
 786         * testsuite/20_util/unique_ptr/creation/for_overwrite.cc:
 787         Likewise.
 788         * testsuite/20_util/unreachable/1.cc: Likewise.
 789         * testsuite/20_util/unreachable/version.cc: Likewise.
 790         * testsuite/20_util/unwrap_reference/1.cc: Likewise.
 791         * testsuite/20_util/unwrap_reference/3.cc: Likewise.
 792         * testsuite/20_util/variant/constexpr.cc: Likewise.
 793         * testsuite/20_util/variant/version.cc: Likewise.
 794         * testsuite/20_util/variant/visit_inherited.cc: Likewise.
 795         * testsuite/20_util/void_t/1.cc: Likewise.
 796         * testsuite/21_strings/basic_string/capacity/char/resize_and_overwrite.cc:
 797         Likewise.
 798         * testsuite/21_strings/basic_string/cons/char/constexpr.cc:
 799         Likewise.
 800         * testsuite/21_strings/basic_string/cons/wchar_t/constexpr.cc:
 801         Likewise.
 802         * testsuite/21_strings/basic_string/erasure.cc: Likewise.
 803         * testsuite/21_strings/basic_string/numeric_conversions/char/to_string_float.cc:
 804         Likewise.
 805         * testsuite/21_strings/basic_string/numeric_conversions/version.cc:
 806         Likewise.
 807         * testsuite/21_strings/basic_string/version.cc: Likewise.
 808         * testsuite/21_strings/basic_string_view/operations/contains/char.cc:
 809         Likewise.
 810         * testsuite/21_strings/basic_string_view/operations/contains/char/2.cc:
 811         Likewise.
 812         * testsuite/21_strings/basic_string_view/operations/copy/char/constexpr.cc:
 813         Likewise.
 814         * testsuite/21_strings/char_traits/requirements/constexpr_functions_c++17.cc:
 815         Likewise.
 816         * testsuite/21_strings/char_traits/requirements/constexpr_functions_c++20.cc:
 817         Likewise.
 818         * testsuite/21_strings/char_traits/requirements/version.cc:
 819         Likewise.
 820         * testsuite/23_containers/array/comparison_operators/constexpr.cc:
 821         Likewise.
 822         * testsuite/23_containers/array/creation/1.cc: Likewise.
 823         * testsuite/23_containers/array/creation/2.cc: Likewise.
 824         * testsuite/23_containers/array/element_access/constexpr_c++17.cc:
 825         Likewise.
 826         * testsuite/23_containers/array/requirements/constexpr_fill.cc:
 827         Likewise.
 828         * testsuite/23_containers/array/requirements/constexpr_iter.cc:
 829         Likewise.
 830         * testsuite/23_containers/deque/erasure.cc: Likewise.
 831         * testsuite/23_containers/forward_list/erasure.cc: Likewise.
 832         * testsuite/23_containers/list/erasure.cc: Likewise.
 833         * testsuite/23_containers/map/erasure.cc: Likewise.
 834         * testsuite/23_containers/queue/cons_from_iters.cc: Likewise.
 835         * testsuite/23_containers/set/erasure.cc: Likewise.
 836         * testsuite/23_containers/span/1.cc: Likewise.
 837         * testsuite/23_containers/span/2.cc: Likewise.
 838         * testsuite/23_containers/stack/cons_from_iters.cc: Likewise.
 839         * testsuite/23_containers/unordered_map/erasure.cc: Likewise.
 840         * testsuite/23_containers/unordered_map/operations/1.cc:
 841         Likewise.
 842         * testsuite/23_containers/unordered_set/erasure.cc: Likewise.
 843         * testsuite/23_containers/unordered_set/operations/1.cc:
 844         Likewise.
 845         * testsuite/23_containers/vector/cons/constexpr.cc: Likewise.
 846         * testsuite/23_containers/vector/erasure.cc: Likewise.
 847         * testsuite/23_containers/vector/requirements/version.cc:
 848         Likewise.
 849         * testsuite/24_iterators/insert_iterator/constexpr.cc: Likewise.
 850         * testsuite/25_algorithms/clamp/constexpr.cc: Likewise.
 851         * testsuite/25_algorithms/clamp/requirements/explicit_instantiation/1.cc:
 852         Remove redundant checks already tested elsewhere.
 853         * testsuite/25_algorithms/constexpr_macro.cc: Likewise.
 854         * testsuite/25_algorithms/cpp_lib_constexpr.cc: Likewise.
 855         * testsuite/25_algorithms/fold_left/1.cc: Likewise.
 856         * testsuite/25_algorithms/pstl/feature_test-2.cc: Likewise.
 857         * testsuite/25_algorithms/pstl/feature_test-3.cc: Likewise.
 858         * testsuite/25_algorithms/pstl/feature_test-4.cc: Likewise.
 859         * testsuite/25_algorithms/pstl/feature_test-5.cc: Likewise.
 860         * testsuite/25_algorithms/pstl/feature_test.cc: Likewise.
 861         * testsuite/26_numerics/bit/bit.byteswap/byteswap.cc: Likewise.
 862         * testsuite/26_numerics/bit/bit.byteswap/version.cc: Likewise.
 863         * testsuite/26_numerics/bit/bit.cast/bit_cast.cc: Likewise.
 864         * testsuite/26_numerics/bit/bit.cast/version.cc: Likewise.
 865         * testsuite/26_numerics/bit/header-2.cc: Likewise.
 866         * testsuite/26_numerics/bit/header.cc: Likewise.
 867         * testsuite/26_numerics/complex/1.cc: Likewise.
 868         * testsuite/26_numerics/complex/2.cc: Likewise.
 869         * testsuite/26_numerics/endian/2.cc: Likewise.
 870         * testsuite/26_numerics/endian/3.cc: Likewise.
 871         * testsuite/26_numerics/gcd/1.cc: Likewise.
 872         * testsuite/26_numerics/lcm/1.cc: Likewise.
 873         * testsuite/26_numerics/lerp/1.cc: Likewise.
 874         * testsuite/26_numerics/lerp/version.cc: Likewise.
 875         * testsuite/26_numerics/midpoint/integral.cc: Likewise.
 876         * testsuite/26_numerics/midpoint/version.cc: Likewise.
 877         * testsuite/26_numerics/numbers/1.cc: Likewise.
 878         * testsuite/26_numerics/numbers/2.cc: Likewise.
 879         * testsuite/27_io/basic_filebuf/native_handle/char/1.cc:
 880         Likewise.
 881         * testsuite/27_io/basic_filebuf/native_handle/version.cc:
 882         Likewise.
 883         * testsuite/27_io/basic_ofstream/open/char/noreplace.cc:
 884         Likewise.
 885         * testsuite/27_io/basic_ofstream/open/wchar_t/noreplace.cc:
 886         Likewise.
 887         * testsuite/27_io/basic_syncbuf/1.cc: Likewise.
 888         * testsuite/27_io/basic_syncbuf/2.cc: Likewise.
 889         * testsuite/27_io/basic_syncstream/1.cc: Likewise.
 890         * testsuite/27_io/basic_syncstream/2.cc: Likewise.
 891         * testsuite/27_io/spanstream/1.cc: Likewise.
 892         * testsuite/27_io/spanstream/version.cc: Likewise.
 893         * testsuite/29_atomics/atomic/cons/value_init.cc: Likewise.
 894         * testsuite/29_atomics/atomic/lock_free_aliases.cc: Likewise.
 895         * testsuite/29_atomics/atomic/wait_notify/1.cc: Likewise.
 896         * testsuite/29_atomics/atomic/wait_notify/2.cc: Likewise.
 897         * testsuite/29_atomics/headers/stdatomic.h/c_compat.cc:
 898         Likewise.
 899         * testsuite/29_atomics/headers/stdatomic.h/version.cc: Likewise.
 900         * testsuite/30_threads/barrier/1.cc: Likewise.
 901         * testsuite/30_threads/barrier/2.cc: Likewise.
 902         * testsuite/30_threads/condition_variable_any/stop_token/1.cc:
 903         Likewise.
 904         * testsuite/30_threads/condition_variable_any/stop_token/2.cc:
 905         Likewise.
 906         * testsuite/30_threads/jthread/1.cc: Likewise.
 907         * testsuite/30_threads/jthread/version.cc: Likewise.
 908         * testsuite/30_threads/latch/1.cc: Likewise.
 909         * testsuite/30_threads/latch/2.cc: Likewise.
 910         * testsuite/30_threads/scoped_lock/requirements/typedefs.cc:
 911         Likewise.
 912         * testsuite/30_threads/semaphore/1.cc: Likewise.
 913         * testsuite/30_threads/semaphore/2.cc: Likewise.
 914         * testsuite/30_threads/stop_token/1.cc: Likewise.
 915         * testsuite/30_threads/stop_token/2.cc: Likewise.
 916         * testsuite/experimental/feat-char8_t.cc: Likewise.
 917         * testsuite/experimental/iterator/ostream_joiner.cc: Likewise.
 918         * testsuite/experimental/numeric/gcd.cc: Likewise.
 919         * testsuite/experimental/scopeguard/uniqueres.cc: Likewise.
 920         * testsuite/std/concepts/1.cc: Likewise.
 921         * testsuite/std/concepts/2.cc: Likewise.
 922         * testsuite/std/ranges/adaptors/as_const/1.cc: Likewise.
 923         * testsuite/std/ranges/adaptors/as_rvalue/1.cc: Likewise.
 924         * testsuite/std/ranges/adaptors/chunk/1.cc: Likewise.
 925         * testsuite/std/ranges/adaptors/chunk_by/1.cc: Likewise.
 926         * testsuite/std/ranges/adaptors/enumerate/1.cc: Likewise.
 927         * testsuite/std/ranges/adaptors/join_with/1.cc: Likewise.
 928         * testsuite/std/ranges/adaptors/slide/1.cc: Likewise.
 929         * testsuite/std/ranges/adaptors/stride/1.cc: Likewise.
 930         * testsuite/std/ranges/cartesian_product/1.cc: Likewise.
 931         * testsuite/std/ranges/headers/ranges/synopsis.cc: Likewise.
 932         * testsuite/std/ranges/repeat/1.cc: Likewise.
 933         * testsuite/std/ranges/version_c++23.cc: Likewise.
 934         * testsuite/std/ranges/zip/1.cc: Likewise.
 935         * testsuite/std/time/syn_c++20.cc: Likewise.
 936         * testsuite/experimental/feat-cxx14.cc: Likewise. Include
 937         <algorithm> and <iterator>.
 938         * testsuite/23_containers/array/tuple_interface/get_neg.cc:
 939         Adjust dg-error line numbers.
 940
 941 2023-11-16  Jonathan Wakely  <jwakely@redhat.com>
 942
 943         * include/bits/version.def (stds): Use >= 202100 for C++23
 944         condition.
 945         * include/bits/version.h: Regenerate.
 946         * include/std/thread: Use > C++20 instead of >= C++23 for
 947         __cplusplus condition.
 948
 949 2023-11-16  Jonathan Wakely  <jwakely@redhat.com>
 950
 951         * include/std/istream (__rvalue_stream_extraction_t): Test
 952         __cpp_concepts instead of __cpp_lib_concepts.
 953         * include/std/ostream (__derived_from_ios_base): Likewise.
 954         (__rvalue_stream_insertion_t): Likewise.
 955
 956 2023-11-15  Jonathan Wakely  <jwakely@redhat.com>
 957
 958         PR libstdc++/112491
 959         * python/libstdcxx/v6/xmethods.py (DequeWorkerBase.index):
 960         Correctly handle unused capacity at the start of the first node.
 961         * testsuite/libstdc++-xmethods/deque.cc: Check index operator
 962         when elements have been removed from the front.
 963
 964 2023-11-15  Jonathan Wakely  <jwakely@redhat.com>
 965
 966         * include/std/stacktrace (basic_stacktrace::at): Fix class name
 967         in exception message.
 968         * testsuite/19_diagnostics/stacktrace/hash.cc: Do not fail if
 969         current() returns a non-empty stacktrace.
 970
 971 2023-11-15  Alexandre Oliva  <oliva@gnu.org>
 972
 973         Revert:
 974         2023-11-15  Alexandre Oliva  <oliva@adacore.com>
 975
 976         * include/bits/stl_bvector.h (_GLIBCXX_ALWAYS_INLINE): Undef.
 977
 978 2023-11-15  Alexandre Oliva  <oliva@adacore.com>
 979
 980         * include/bits/stl_bvector.h (_GLIBCXX_ALWAYS_INLINE): Undef.
 981
 982 2023-11-14  Cassio Neri  <cassio.neri@gmail.com>
 983
 984         * include/std/chrono (operator-(const weekday&, const weekday&)):
 985         Optimize.
 986
 987 2023-11-14  Cassio Neri  <cassio.neri@gmail.com>
 988
 989         * include/std/chrono (weekday::_S_from_days): Fix UB.
 990         * testsuite/std/time/weekday/1.cc: Add test for overflow.
 991
 992 2023-11-14  Cassio Neri  <cassio.neri@gmail.com>
 993
 994         * include/std/chrono (year::is_leap): Clear code.
 995
 996 2023-11-14  Cassio Neri  <cassio.neri@gmail.com>
 997
 998         * include/std/chrono (year_month_day_last::day): Remove &1.
 999
1000 2023-11-14  Jonathan Wakely  <jwakely@redhat.com>
1001
1002         * include/std/charconv (__from_chars_pow2_base): Convert base to
1003         unsigned for call to __countr_zero.
1004         (__from_chars_alnum): Likewise for call to __bit_width.
1005
1006 2023-11-14  Jonathan Wakely  <jwakely@redhat.com>
1007
1008         PR libstdc++/112348
1009         * include/std/stacktrace (hash<basic_stacktrace<Alloc>>): Fix
1010         type of hash functio nfor entries.
1011         * testsuite/19_diagnostics/stacktrace/hash.cc: New test.
1012
1013 2023-11-14  Jonathan Wakely  <jwakely@redhat.com>
1014
1015         PR libstdc++/112491
1016         * python/libstdcxx/v6/xmethods.py (DequeWorkerBase.size): Fix
1017         calculation to use _M_start._M_cur.
1018         * testsuite/libstdc++-xmethods/deque.cc: Check failing cases.
1019
1020 2023-11-13  Arsen Arsenović  <arsen@aarsen.me>
1021
1022         * configure: Regenerate.
1023
1024 2023-11-13  Jonathan Wakely  <jwakely@redhat.com>
1025
1026         * testsuite/std/time/clock/file/io.cc: Double timeout using
1027         dg-timeout-factor.
1028         * testsuite/std/time/clock/gps/io.cc: Likewise.
1029         * testsuite/std/time/clock/local/io.cc: Likewise.
1030         * testsuite/std/time/clock/system/io.cc: Likewise.
1031         * testsuite/std/time/clock/tai/io.cc: Likewise.
1032         * testsuite/std/time/clock/utc/io.cc: Likewise.
1033
1034 2023-11-13  Jonathan Wakely  <jwakely@redhat.com>
1035
1036         PR libstdc++/112480
1037         * include/std/optional (_Optional_payload_base::_M_reset): Set
1038         _M_engaged to false unconditionally.
1039
1040 2023-11-11  Jonathan Wakely  <jwakely@redhat.com>
1041
1042         PR libstdc++/112467
1043         * include/bits/stl_bvector.h (_M_assume_normalized): Do not use
1044         statement form of assume attribute for Clang.
1045
1046 2023-11-11  Jonathan Wakely  <jwakely@redhat.com>
1047
1048         * include/std/string_view (operator==, operator<=>): Remove
1049         redundant overloads (LWG 3950).
1050
1051 2023-11-11  Jonathan Wakely  <jwakely@redhat.com>
1052
1053         * testsuite/26_numerics/headers/complex.h/std_c++11.h: Moved to...
1054         * testsuite/26_numerics/headers/complex.h/std_c++11.cc: ...here.
1055         * testsuite/26_numerics/headers/complex.h/std_c++98.h: Moved to...
1056         * testsuite/26_numerics/headers/complex.h/std_c++98.cc: ...here.
1057         Check macro first and then #undef.
1058         * testsuite/26_numerics/headers/complex.h/std_gnu++11.h: Moved to...
1059         * testsuite/26_numerics/headers/complex.h/std_gnu++11.cc: ...here.
1060
1061 2023-11-11  Jonathan Wakely  <jwakely@redhat.com>
1062
1063         PR libstdc++/112473
1064         * include/bits/utility.h (integer_sequence): Add static_assert.
1065         * testsuite/20_util/integer_sequence/112473.cc: New test.
1066
1067 2023-11-11  Jonathan Wakely  <jwakely@redhat.com>
1068
1069         * testsuite/20_util/pair/dangling_ref.cc: Add hosted effective
1070         target for specifiers using c++17_down.
1071
1072 2023-11-11  Jonathan Wakely  <jwakely@redhat.com>
1073
1074         * include/bits/shared_ptr_atomic.h (atomic_is_lock_free)
1075         (atomic_load_explicit, atomic_load, atomic_store_explicit)
1076         (atomic_store, atomic_exchange_explicit, atomic_exchange)
1077         (atomic_compare_exchange_strong, atomic_compare_exchange_weak)
1078         (atomic_compare_exchange_strong_explicit)
1079         (atomic_compare_exchange_weak_explicit): Add deprecated
1080         attribute for C++20 and later.
1081         * testsuite/20_util/shared_ptr/atomic/1.cc: Suppress deprecated
1082         warnings.
1083         * testsuite/20_util/shared_ptr/atomic/2.cc: Likewise.
1084         * testsuite/20_util/shared_ptr/atomic/3.cc: Likewise.
1085         * testsuite/29_atomics/atomic/lwg3220.cc: Likewise.
1086
1087 2023-11-11  Jonathan Wakely  <jwakely@redhat.com>
1088
1089         * include/bits/std_mutex.h (lock_guard): Add [[nodiscard]]
1090         attribute to constructors.
1091         * include/bits/unique_lock.h (unique_lock): Likewise.
1092         * include/std/mutex (scoped_lock, scoped_lock<Mutex>): Likewise.
1093         * testsuite/30_threads/lock_guard/cons/nodiscard.cc: New test.
1094         * testsuite/30_threads/scoped_lock/cons/nodiscard.cc: New test.
1095         * testsuite/30_threads/unique_lock/cons/nodiscard.cc: New test.
1096
1097 2023-11-11  Jonathan Wakely  <jwakely@redhat.com>
1098
1099         * include/std/span (span, as_bytes, as_writable_bytes): Add
1100         [[nodiscard]] attribute on all non-void functions.
1101         * testsuite/23_containers/span/back_assert_neg.cc: Suppress
1102         nodiscard warning.
1103         * testsuite/23_containers/span/back_neg.cc: Likewise.
1104         * testsuite/23_containers/span/first_2_assert_neg.cc: Likewise.
1105         * testsuite/23_containers/span/first_assert_neg.cc: Likewise.
1106         * testsuite/23_containers/span/first_neg.cc: Likewise.
1107         * testsuite/23_containers/span/front_assert_neg.cc: Likewise.
1108         * testsuite/23_containers/span/front_neg.cc: Likewise.
1109         * testsuite/23_containers/span/index_op_assert_neg.cc: Likewise.
1110         * testsuite/23_containers/span/index_op_neg.cc: Likewise.
1111         * testsuite/23_containers/span/last_2_assert_neg.cc: Likewise.
1112         * testsuite/23_containers/span/last_assert_neg.cc: Likewise.
1113         * testsuite/23_containers/span/last_neg.cc: Likewise.
1114         * testsuite/23_containers/span/subspan_2_assert_neg.cc:
1115         Likewise.
1116         * testsuite/23_containers/span/subspan_3_assert_neg.cc:
1117         Likewise.
1118         * testsuite/23_containers/span/subspan_4_assert_neg.cc:
1119         Likewise.
1120         * testsuite/23_containers/span/subspan_5_assert_neg.cc:
1121         Likewise.
1122         * testsuite/23_containers/span/subspan_6_assert_neg.cc:
1123         Likewise.
1124         * testsuite/23_containers/span/subspan_assert_neg.cc: Likewise.
1125         * testsuite/23_containers/span/subspan_neg.cc: Likewise.
1126         * testsuite/23_containers/span/nodiscard.cc: New test.
1127
1128 2023-11-11  Jonathan Wakely  <jwakely@redhat.com>
1129
1130         PR libstdc++/111638
1131         * config.h.in: Regenerate.
1132         * configure: Regenerate.
1133         * linkage.m4 (GLIBCXX_MAYBE_UNDERSCORED_FUNCS): Remove.
1134         (GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1): Do not check for _foo.
1135         (GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1): Likewise.
1136         (GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2): Likewise.
1137         (GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_3): Likewise.
1138         (GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_2): Do not use
1139         GLIBCXX_MAYBE_UNDERSCORED_FUNCS.
1140
1141 2023-11-11  Nathaniel Shead  <nathanieloshead@gmail.com>
1142
1143         PR libstdc++/79700
1144         * include/c_global/cmath (acosf, acosl, asinf, asinl, atanf)
1145         (atanl, atan2f, atan2l, ceilf, ceill, cosf, cosl, coshf, coshl)
1146         (expf, expl, fabsf, fabsl, floorf, floorl, fmodf, fmodl, frexpf)
1147         (frexpl, ldexpf, ldexpl, logf, logl, log10f, log10l, modff)
1148         (modfl, powf, powl, sinf, sinl, sinhf, sinhl, sqrtf, sqrtl, tanf)
1149         (tanl, tanhf, tanhl): Add using-declarations in namespace std.
1150         * testsuite/26_numerics/headers/cmath/equivalent_functions.cc:
1151         New test.
1152         * testsuite/26_numerics/headers/cmath/functions_std_c++17.cc:
1153         Add checks for existence of above names.
1154
1155 2023-11-09  Arsen Arsenović  <arsen@aarsen.me>
1156
1157         * testsuite/20_util/scoped_allocator/noexcept.cc: Mark as
1158         requiring hosted.
1159
1160 2023-11-09  Arsen Arsenović  <arsen@aarsen.me>
1161
1162         * include/bits/memoryfwd.h: Remove HOSTED check around allocator
1163         and its specializations.
1164
1165 2023-11-09  Patrick Palka  <ppalka@redhat.com>
1166
1167         PR libstdc++/112453
1168         * include/std/ranges (__detail::__box<_Tp>::operator*): Define
1169         && overloads as well.
1170         (__detail::__take_of_repeat_view): Forward __r when accessing
1171         its _M_value member.
1172         (__detail::__drop_of_repeat_view): Likewise.
1173         * testsuite/std/ranges/repeat/1.cc (test07): New test.
1174
1175 2023-11-09  François Dumont  <fdumont@gcc.gnu.org>
1176
1177         * include/bits/hashtable_policy.h (_RehashStateGuard): New.
1178         (_Insert_base<>::_M_insert_range(_IIt, _IIt, const _NodeGet&, false_type)):
1179         Adapt.
1180         * include/bits/hashtable.h (__rehash_guard_t): New.
1181         (__rehash_state): Remove.
1182         (_M_rehash): Remove.
1183         (_M_rehash_aux): Rename into _M_rehash.
1184         (_M_assign_elements, _M_insert_unique_node, _M_insert_multi_node): Adapt.
1185         (rehash): Adapt.
1186
1187 2023-11-09  François Dumont  <fdumont@gcc.gnu.org>
1188
1189         * include/bits/hashtable_policy.h
1190         (struct _NodePtrGuard<_HashtableAlloc, _NodePtr>): New.
1191         (_ReuseAllocNode::operator()(_Args&&...)): Use latter to guard allocated node
1192         pointer while constructing in place the value_type instance.
1193
1194 2023-11-09  Alexandre Oliva  <oliva@adacore.com>
1195
1196         PR libstdc++/110807
1197         * include/bits/stl_bvector.h (_Bit_iterator_base): Add
1198         _M_assume_normalized member function.  Call it in _M_bump_up,
1199         _M_bump_down, _M_incr, operator==, operator<=>, operator<, and
1200         operator-.
1201         (_Bit_iterator): Also call it in operator*.
1202         (_Bit_const_iterator): Likewise.
1203
1204 2023-11-07  François Dumont  <fdumont@gcc.gnu.org>
1205
1206         * include/bits/hashtable_policy.h
1207         (_Hashtable_alloc<>::_M_allocate_node): Add missing call to node destructor
1208         on construct exception.
1209
1210 2023-11-07  Richard Biener  <rguenther@suse.de>
1211
1212         PR libstdc++/112351
1213         * src/c++98/locale.cc (locale::facet::_S_initialize_once):
1214         Check whether _S_c_locale is already initialized.
1215         (locale::facet::_S_get_c_locale): Always perform non-threadsafe
1216         init when threadsafe init failed.
1217
1218 2023-11-06  Ian Lance Taylor  <iant@golang.org>
1219
1220         PR libbacktrace/111315
1221         PR libbacktrace/112263
1222         * acinclude.m4: Set -D_GNU_SOURCE in BACKTRACE_CPPFLAGS and when
1223         grepping link.h for dl_iterate_phdr.
1224         * configure: Regenerate.
1225
1226 2023-11-06  Jonathan Wakely  <jwakely@redhat.com>
1227
1228         * include/std/expected (expected::and_then, expected::or_else):
1229         Add string literals to static assertions.
1230         * include/std/optional (optional::and_then, optional::or_else):
1231         Likewise.
1232
1233 2023-11-04  Feng Jisen  <J1senn@outlook.com>
1234
1235         * include/bits/utility.h (_Nth_type): Remove redundant partial
1236         specialization.
1237
1238 2023-11-04  Jonathan Wakely  <jwakely@redhat.com>
1239
1240         PR libstdc++/110133
1241         * include/std/system_error (system_error::system_error): Group
1242         arguments so that concatenation can reuse rvalue's capacity.
1243         * src/c++11/system_error.cc (strerror_string): New function.
1244         [_GLIBCXX_HAVE_STRERROR_R] (use_strerror_result): New functions.
1245         (generic_error_category::message): Use strerror_string.
1246         (system_error_category::message): Likewise.
1247
1248 2023-11-04  Jonathan Wakely  <jwakely@redhat.com>
1249
1250         * doc/xml/manual/appendix_contributing.xml: Replace example that
1251         uses a BADNAME.
1252         * doc/html/manual/source_code_style.html: Regenerate.
1253
1254 2023-11-02  Jonathan Wakely  <jwakely@redhat.com>
1255
1256         PR libstdc++/112314
1257         * include/std/string_view (string_view::remove_suffix): Add
1258         debug assertion.
1259         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/debug.cc:
1260         New test.
1261         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/debug.cc:
1262         New test.
1263
1264 2023-11-02  Jonathan Wakely  <jwakely@redhat.com>
1265
1266         * acinclude.m4 (GLIBCXX_ENABLE_C99): Fix snprintf checks.
1267         * configure: Regenerate.
1268
1269 2023-10-30  François Dumont  <fdumont@gcc.gnu.org>
1270
1271         * config/abi/pre/gnu-versioned-namespace.ver: Add comment on recently
1272         added emul TLS symbols.
1273
1274 2023-10-30  François Dumont  <fdumont@gcc.gnu.org>
1275
1276         * src/experimental/contract.cc
1277         [_GLIBCXX_INLINE_VERSION](handle_contract_violation): Rework comment.
1278         Remove weak attribute.
1279
1280 2023-10-29  François Dumont  <fdumont@gcc.gnu.org>
1281
1282         * config/abi/pre/gnu-versioned-namespace.ver: Add missing emul TLS
1283         symbols.
1284
1285 2023-10-29  François Dumont  <fdumont@gcc.gnu.org>
1286
1287         * src/experimental/contract.cc
1288         [_GLIBCXX_INLINE_VERSION](handle_contract_violation): Provide symbol
1289         without version namespace decoration for gcc.
1290
1291 2023-10-26  Jonathan Wakely  <jwakely@redhat.com>
1292
1293         PR libstdc++/112089
1294         * include/std/shared_mutex (shared_lock::unlock): Change errc
1295         constant to operation_not_permitted.
1296         * testsuite/30_threads/shared_lock/locking/112089.cc: New test.
1297
1298 2023-10-26  Jonathan Wakely  <jwakely@redhat.com>
1299
1300         * testsuite/20_util/duration/io.cc: Double timeout using
1301         dg-timeout-factor.
1302         * testsuite/std/time/day/io.cc: Likewise.
1303         * testsuite/std/time/format.cc: Likewise.
1304         * testsuite/std/time/hh_mm_ss/io.cc: Likewise.
1305         * testsuite/std/time/month/io.cc: Likewise.
1306         * testsuite/std/time/month_day/io.cc: Likewise.
1307         * testsuite/std/time/month_day_last/io.cc: Likewise.
1308         * testsuite/std/time/month_weekday/io.cc: Likewise.
1309         * testsuite/std/time/month_weekday_last/io.cc: Likewise.
1310         * testsuite/std/time/weekday/io.cc: Likewise.
1311         * testsuite/std/time/weekday_indexed/io.cc: Likewise.
1312         * testsuite/std/time/weekday_last/io.cc: Likewise.
1313         * testsuite/std/time/year/io.cc: Likewise.
1314         * testsuite/std/time/year_month/io.cc: Likewise.
1315         * testsuite/std/time/year_month_day/io.cc: Likewise.
1316         * testsuite/std/time/year_month_day_last/io.cc: Likewise.
1317         * testsuite/std/time/year_month_weekday/io.cc: Likewise.
1318         * testsuite/std/time/year_month_weekday_last/io.cc: Likewise.
1319         * testsuite/std/time/zoned_time/io.cc: Likewise.
1320
1321 2023-10-25  Jonathan Wakely  <jwakely@redhat.com>
1322
1323         PR libstdc++/111936
1324         * src/libbacktrace/Makefile.am: Add -prefer-pic to libtool
1325         compile commands.
1326         * src/libbacktrace/Makefile.in: Regenerate.
1327
1328 2023-10-24  Paul M. Bendixen  <paulbendixen@gmail.com>
1329
1330         * include/Makefile.am: Move cstdarg, cstdalign and cstdbool to
1331         freestanding.
1332         * include/Makefile.in: Regenerate.
1333
1334 2023-10-22  Iain Sandoe  <iain@sandoe.co.uk>
1335
1336         * configure: Regenerate.
1337         * configure.ac: Handle Darwin rpaths.
1338         * src/Makefile.am: Handle Darwin rpaths.
1339         * src/Makefile.in: Regenerate.
1340
1341 2023-10-21  Jonathan Wakely  <jwakely@redhat.com>
1342
1343         * include/bits/basic_string.h (_M_init_local_buf()): New
1344         function.
1345         (_M_use_local_data()): Use _M_init_local_buf.
1346         (basic_string(), basic_string(const Alloc&))
1347         (basic_string(basic_string&&))
1348         (basic_string(basic_string&&, const Alloc&)): Use
1349         _M_init_local_buf instead of _M_use_local_data().
1350         * include/bits/basic_string.tcc (swap(basic_string&))
1351         (_M_construct(InIter, InIter, input_iterator_tag))
1352         (_M_construct(InIter, InIter, forward_iterator_tag))
1353         (_M_construct(size_type, CharT), reserve()): Likewise.
1354
1355 2023-10-21  Benjamin Brock  <brock@cs.berkeley.edu>
1356
1357         * include/std/ranges (zip_view, adjacent_view): Implement
1358         workaround for LLVM-61763.
1359
1360 2023-10-21  Dimitrij Mijoski  <dmjpp@hotmail.com>
1361
1362         * testsuite/22_locale/codecvt/codecvt_unicode.h: Test length()
1363
1364 2023-10-21  Jonathan Wakely  <jwakely@redhat.com>
1365
1366         * include/bits/fs_dir.h (operator==(default_sentinel_t)): Fix
1367         indentation.
1368
1369 2023-10-20  Marek Polacek  <polacek@redhat.com>
1370
1371         PR testsuite/111883
1372         * include/std/charconv (from_chars): Add explicit casts.
1373
1374 2023-10-19  François Dumont  <fdumont@gcc.gnu.org>
1375
1376         * include/bits/hashtable_policy.h
1377         (_Hash_code_base::_M_hash_code(const _Hash&, const _Hash_node_value<>&)): Remove.
1378         (_Hash_code_base::_M_hash_code<_H2>(const _H2&, const _Hash_node_value<>&)): Remove.
1379         * include/bits/hashtable.h
1380         (_M_src_hash_code<_H2>(const _H2&, const key_type&, const __node_value_type&)): New.
1381         (_M_merge_unique<>, _M_merge_multi<>): Use latter.
1382         * testsuite/23_containers/unordered_map/modifiers/merge.cc
1383         (test04, test05, test06): New test cases.
1384
1385 2023-10-13  Jakub Jelinek  <jakub@redhat.com>
1386
1387         * testsuite/tr1/8_c_compatibility/cstdio/functions.cc (test01):
1388         Initialize stream to va_arg(ap, FILE*) rather than 0.
1389         * testsuite/tr1/8_c_compatibility/cwchar/functions.cc (test01):
1390         Likewise.
1391
1392 2023-10-13  Hans-Peter Nilsson  <hp@axis.com>
1393
1394         * testsuite/29_atomics/atomic/compare_exchange_padding.cc,
1395         testsuite/29_atomics/atomic_flag/clear/1.cc,
1396         testsuite/29_atomics/atomic_flag/cons/value_init.cc,
1397         testsuite/29_atomics/atomic_flag/test_and_set/explicit.cc,
1398         testsuite/29_atomics/atomic_flag/test_and_set/implicit.cc,
1399         testsuite/29_atomics/atomic_ref/compare_exchange_padding.cc,
1400         testsuite/29_atomics/atomic_ref/generic.cc,
1401         testsuite/29_atomics/atomic_ref/integral.cc,
1402         testsuite/29_atomics/atomic_ref/pointer.cc: Replace
1403         dg-require-thread-fence with dg-require-atomic-cmpxchg-word.
1404
1405 2023-10-13  Hans-Peter Nilsson  <hp@axis.com>
1406
1407         * testsuite/lib/dg-options.exp (dg-require-atomic-cmpxchg-word):
1408         New proc.
1409         * testsuite/lib/libstdc++.exp (check_v3_target_atomic_cmpxchg_word):
1410         Ditto.
1411
1412 2023-10-05  François Dumont  <fdumont@gcc.gnu.org>
1413
1414         * config/abi/pre/gnu-versioned-namespace.ver: Add missing symbols
1415         for _Float{16,32,64,128,32x,64x,128x}.
1416
1417 2023-10-04  Tom Tromey  <tromey@adacore.com>
1418
1419         * python/libstdcxx/v6/printers.py
1420         (StdExpAnyPrinter.__init__): Qualify call to
1421         _string_types.
1422
1423 2023-10-04  Tom Tromey  <tromey@adacore.com>
1424
1425         * python/libstdcxx/v6/printers.py: Assume that
1426         _versioned_namespace is non-None.
1427         * python/libstdcxx/v6/xmethods.py (is_specialization_of):
1428         Assume that _versioned_namespace is non-None.
1429
1430 2023-10-04  Tom Tromey  <tromey@adacore.com>
1431
1432         * python/libstdcxx/v6/xmethods.py (_versioned_namespace):
1433         Define.
1434
1435 2023-09-29  Dimitrij Mijoski  <dmjpp@hotmail.com>
1436
1437         PR libstdc++/108976
1438         * src/c++11/codecvt.cc (read_utf8_code_point): Fix handing of
1439         surrogates in UTF-8.
1440         (ucs4_out): Fix handling of surrogates in UCS-4 -> UTF-8.
1441         (ucs4_in): Fix handling of range with odd number of bytes.
1442         (ucs4_out): Fix handling of surrogates in UCS-4 -> UTF-16.
1443         (ucs2_out): Fix handling of surrogates in UCS-2 -> UTF-16.
1444         (ucs2_in): Fix handling of range with odd number of bytes.
1445         (__codecvt_utf16_base<char16_t>::do_in): Likewise.
1446         (__codecvt_utf16_base<char32_t>::do_in): Likewise.
1447         (__codecvt_utf16_base<wchar_t>::do_in): Likewise.
1448         * testsuite/22_locale/codecvt/codecvt_unicode.cc: Renames, add
1449         tests for codecvt_utf16<char16_t> and codecvt_utf16<char32_t>.
1450         * testsuite/22_locale/codecvt/codecvt_unicode.h: Refactor UTF-8
1451         testing functions for char8_t, add more test cases for errors,
1452         add testing functions for codecvt_utf16.
1453         * testsuite/22_locale/codecvt/codecvt_unicode_wchar_t.cc:
1454         Renames, add tests for codecvt_utf16<whchar_t>.
1455         * testsuite/22_locale/codecvt/codecvt_utf16/79980.cc (test06):
1456         Fix test.
1457         * testsuite/22_locale/codecvt/codecvt_unicode_char8_t.cc: New
1458         test.
1459
1460 2023-09-29  Nathaniel Shead  <nathanieloshead@gmail.com>
1461
1462         * include/bits/basic_string.h: (basic_string(basic_string&&)):
1463         Activate _M_local_buf when needed.
1464         (basic_string(basic_string&&, const _Alloc&)): Likewise.
1465         * include/bits/basic_string.tcc: (basic_string::swap): Likewise.
1466         * include/std/variant: (__detail::__variant::__construct_n): New.
1467         (__detail::__variant::__emplace): Use __construct_n.
1468
1469 2023-09-28  Tom Tromey  <tromey@adacore.com>
1470
1471         * python/libstdcxx/v6/printers.py (Printer.add_version)
1472         (add_one_template_type_printer)
1473         (FilteringTypePrinter.add_one_type_printer): Use Python
1474         "not in" operator.
1475
1476 2023-09-28  Tom Tromey  <tromey@adacore.com>
1477
1478         * python/libstdcxx/v6/printers.py (std_ratio_t_tuple):
1479         Remove.
1480
1481 2023-09-28  Tom Tromey  <tromey@adacore.com>
1482
1483         * python/libstdcxx/v6/printers.py
1484         (StdExpOptionalPrinter.__init__, lookup_node_type):
1485         Remove unused variables.
1486
1487 2023-09-28  Tom Tromey  <tromey@adacore.com>
1488
1489         * python/libstdcxx/v6/printers.py: Don't import 'os'.
1490         * python/libstdcxx/v6/__init__.py: Don't import 'gdb'.
1491
1492 2023-09-28  Tom Tromey  <tromey@adacore.com>
1493
1494         * python/libstdcxx/v6/printers.py: Use gdb.ValuePrinter
1495         everywhere.  Rename members to start with "_".
1496
1497 2023-09-28  Tom Tromey  <tromey@adacore.com>
1498
1499         * testsuite/lib/gdb-test.exp (gdb-test): Enable Python
1500         stack traces from gdb.
1501
1502 2023-09-28  Jonathan Wakely  <jwakely@redhat.com>
1503
1504         * python/libstdcxx/v6/xmethods.py (is_specialization_of): Define
1505         new function.
1506         (ArrayMethodsMatcher, DequeMethodsMatcher)
1507         (ForwardListMethodsMatcher, ListMethodsMatcher)
1508         (VectorMethodsMatcher, AssociativeContainerMethodsMatcher)
1509         (UniquePtrGetWorker, UniquePtrMethodsMatcher)
1510         (SharedPtrSubscriptWorker, SharedPtrMethodsMatcher): Use
1511         is_specialization_of instead of re.match.
1512
1513 2023-09-28  Jonathan Wakely  <jwakely@redhat.com>
1514
1515         * python/libstdcxx/v6/printers.py: Break long lines. Use raw
1516         strings for regular expressions. Add whitespace around
1517         operators.
1518         (is_member_of_namespace): Use isinstance to check type.
1519         (is_specialization_of): Likewise. Adjust template_name
1520         for versioned namespace instead of duplicating the re.match
1521         call.
1522         (StdExpAnyPrinter._string_types): New static method.
1523         (StdExpAnyPrinter.to_string): Use _string_types.
1524
1525 2023-09-28  Jonathan Wakely  <jwakely@redhat.com>
1526
1527         * python/libstdcxx/v6/printers.py: Format docstrings according
1528         to PEP 257.
1529         * python/libstdcxx/v6/xmethods.py: Likewise.
1530
1531 2023-09-28  Tim Song  <t.canens.cpp@gmail.com>
1532
1533         PR libstdc++/111050
1534         * include/bits/hashtable_policy.h
1535         (_Hash_node_value_base<>::_M_valptr(), _Hash_node_value_base<>::_M_v())
1536         Add [[__gnu__::__always_inline__]].
1537
1538 2023-09-27  Jonathan Wakely  <jwakely@redhat.com>
1539
1540         * python/libstdcxx/v6/printers.py (StdChronoTimeZoneRulePrinter):
1541         Fix incorrect number of replacement fields.
1542
1543 2023-09-26  Hans-Peter Nilsson  <hp@axis.com>
1544
1545         * testsuite/29_atomics/atomic_flag/cons/value_init.cc: Add
1546         dg-require-thread-fence.
1547
1548 2023-09-25  Patrick Palka  <ppalka@redhat.com>
1549
1550         * include/std/charconv (__detail::__integer_to_chars_result_type):
1551         Remove.
1552         (__detail::__to_chars_16): Use to_chars_result as return type.
1553         (__detail::__to_chars_10): Likewise.
1554         (__detail::__to_chars_8): Likewise.
1555         (__detail::__to_chars_2): Likewise.
1556         (__detail::__to_chars_i): Likewise.
1557         (__detail::__integer_from_chars_result_type): Inline the
1558         constraint into ...
1559         (from_chars): ... here.  Use __is_standard_integer in the
1560         constraint.  Encode constraint as a defaulted non-type template
1561         parameter instead of within the return type.
1562
1563 2023-09-25  John David Anglin  <danglin@gcc.gnu.org>
1564
1565         * config/abi/post/hppa-linux-gnu/baseline_symbols.txt: Update.
1566
1567 2023-09-25  Jonathan Wakely  <jwakely@redhat.com>
1568
1569         PR libstdc++/111511
1570         PR c++/111512
1571         * include/std/array (to_array): Cast memcpy arguments to void*.
1572         * testsuite/23_containers/array/creation/111512.cc: New test.
1573
1574 2023-09-25  Jonathan Wakely  <jwakely@redhat.com>
1575
1576         * include/bits/move.h (forward_list): Define for C++23.
1577         * include/bits/version.def (forward_like): Define.
1578         * include/bits/version.h: Regenerate.
1579         * include/std/utility (__glibcxx_want_forward_like): Define.
1580         * testsuite/20_util/forward_like/1.cc: New test.
1581         * testsuite/20_util/forward_like/2_neg.cc: New test.
1582         * testsuite/20_util/forward_like/version.cc: New test.
1583
1584 2023-09-19  Marek Polacek  <polacek@redhat.com>
1585
1586         * testsuite/20_util/allocator/105975.cc: Add dg-error.
1587
1588 2023-09-18  Patrick Palka  <ppalka@redhat.com>
1589
1590         PR c++/63198
1591         PR c++/18474
1592         * testsuite/26_numerics/random/discard_block_engine/cons/seed_seq2.cc:
1593         Make data member seed_seq::called mutable.
1594         * testsuite/26_numerics/random/independent_bits_engine/cons/seed_seq2.cc:
1595         Likewise.
1596         * testsuite/26_numerics/random/linear_congruential_engine/cons/seed_seq2.cc:
1597         Likewise.
1598         * testsuite/26_numerics/random/mersenne_twister_engine/cons/seed_seq2.cc:
1599         Likewise.
1600         * testsuite/26_numerics/random/shuffle_order_engine/cons/seed_seq2.cc:
1601         Likewise.
1602         * testsuite/26_numerics/random/subtract_with_carry_engine/cons/seed_seq2.cc:
1603         Likewise.
1604         * testsuite/ext/random/simd_fast_mersenne_twister_engine/cons/seed_seq2.cc:
1605         Likewise.
1606
1607 2023-09-18  Jonathan Wakely  <jwakely@redhat.com>
1608
1609         * doc/xml/manual/status_cxx2020.xml: Tweak P1466R3 status.
1610         * doc/html/manual/status.html: Regenerate.
1611
1612 2023-09-18  Jonathan Wakely  <jwakely@redhat.com>
1613
1614         * doc/xml/manual/configure.xml: Use conventional option name.
1615         * doc/xml/manual/status_cxx2020.xml: Update.
1616         * doc/xml/manual/status_cxx2023.xml: Update.
1617         * doc/html/*: Regenerate.
1618
1619 2023-09-18  Jonathan Wakely  <jwakely@redhat.com>
1620
1621         * doc/xml/manual/intro.xml: Clarify that building libstdc++
1622         separately from GCC is not supported.
1623         * doc/xml/manual/prerequisites.xml: Note msgfmt prerequisite for
1624         testing.
1625         * doc/html/manual/setup.html: Regenerate.
1626
1627 2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
1628
1629         * testsuite/29_atomics/atomic_ref/wait_notify.cc: Do not
1630         restrict to pthreads targets.
1631         * testsuite/30_threads/jthread/3.cc: Likewise.
1632         * testsuite/30_threads/semaphore/100806.cc: Likewise.
1633         * testsuite/30_threads/semaphore/try_acquire.cc: Likewise.
1634         * testsuite/30_threads/semaphore/try_acquire_for.cc: Likewise.
1635         * testsuite/30_threads/semaphore/try_acquire_posix.cc: Likewise.
1636
1637 2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
1638
1639         * testsuite/18_support/coroutines/95917.cc: Remove dg-options
1640         -std=gnu++2a.
1641         * testsuite/18_support/coroutines/hash.cc: Likewise.
1642         * testsuite/18_support/coroutines/lwg3460.cc: Likewise.
1643         * testsuite/18_support/destroying_delete.cc: Likewise.
1644         * testsuite/18_support/source_location/1.cc: Likewise.
1645         * testsuite/18_support/source_location/consteval.cc: Likewise.
1646         * testsuite/18_support/source_location/version.cc: Likewise.
1647         * testsuite/19_diagnostics/error_category/operators/three_way.cc:
1648         Likewise.
1649         * testsuite/19_diagnostics/error_code/operators/three_way.cc:
1650         Likewise.
1651         * testsuite/19_diagnostics/error_condition/operators/three_way.cc:
1652         Likewise.
1653         * testsuite/19_diagnostics/stacktrace/output.cc: Likewise.
1654         * testsuite/26_numerics/adjacent_difference/lwg2055.cc:
1655         Likewise.
1656         * testsuite/26_numerics/bit/bit.count/countl_zero.cc: Likewise.
1657         * testsuite/26_numerics/bit/bit.count/countr_one.cc: Likewise.
1658         * testsuite/26_numerics/bit/bit.count/countr_zero.cc: Likewise.
1659         * testsuite/26_numerics/bit/bit.count/popcount.cc: Likewise.
1660         * testsuite/26_numerics/bit/bit.pow.two/bit_ceil.cc: Likewise.
1661         * testsuite/26_numerics/bit/bit.pow.two/has_single_bit.cc:
1662         Likewise.
1663         * testsuite/28_regex/iterators/regex_iterator/lwg3719.cc:
1664         Likewise.
1665         * testsuite/28_regex/iterators/regex_token_iterator/lwg3719.cc:
1666         Likewise.
1667         * testsuite/28_regex/sub_match/compare_c++20.cc: Likewise.
1668         * testsuite/experimental/filesystem/iterators/106201.cc:
1669         Likewise.
1670         * testsuite/experimental/scopeguard/exit.cc: Likewise.
1671         * testsuite/experimental/scopeguard/uniqueres.cc: Likewise.
1672
1673 2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
1674
1675         * testsuite/30_threads/barrier/1.cc: Remove dg-options
1676         -std=gnu++20.
1677         * testsuite/30_threads/barrier/2.cc: Likewise.
1678         * testsuite/30_threads/barrier/arrive.cc: Likewise.
1679         * testsuite/30_threads/barrier/arrive_and_drop.cc: Likewise.
1680         * testsuite/30_threads/barrier/arrive_and_wait.cc: Likewise.
1681         * testsuite/30_threads/barrier/completion.cc: Likewise.
1682         * testsuite/30_threads/condition_variable/members/clock_neg.cc:
1683         Likewise.
1684         * testsuite/30_threads/condition_variable_any/members/clock_neg.cc:
1685         Likewise.
1686         * testsuite/30_threads/condition_variable_any/stop_token/1.cc:
1687         Likewise.
1688         * testsuite/30_threads/condition_variable_any/stop_token/2.cc:
1689         Likewise.
1690         * testsuite/30_threads/future/members/clock_neg.cc: Likewise.
1691         * testsuite/30_threads/headers/stop_token/synopsis.cc: Likewise.
1692         * testsuite/30_threads/headers/thread/types_std_c++20.cc:
1693         Likewise.
1694         * testsuite/30_threads/jthread/1.cc: Likewise.
1695         * testsuite/30_threads/jthread/100612.cc: Likewise.
1696         * testsuite/30_threads/jthread/95989.cc: Likewise.
1697         * testsuite/30_threads/jthread/jthread.cc: Likewise.
1698         * testsuite/30_threads/jthread/version.cc: Likewise.
1699         * testsuite/30_threads/latch/1.cc: Likewise.
1700         * testsuite/30_threads/latch/2.cc: Likewise.
1701         * testsuite/30_threads/latch/3.cc: Likewise.
1702         * testsuite/30_threads/recursive_timed_mutex/try_lock_until/clock_neg.cc:
1703         Likewise.
1704         * testsuite/30_threads/semaphore/1.cc: Likewise.
1705         * testsuite/30_threads/semaphore/2.cc: Likewise.
1706         * testsuite/30_threads/semaphore/least_max_value_neg.cc:
1707         Likewise.
1708         * testsuite/30_threads/semaphore/try_acquire_until.cc: Likewise.
1709         * testsuite/30_threads/shared_future/members/clock_neg.cc:
1710         Likewise.
1711         * testsuite/30_threads/shared_lock/locking/clock_neg.cc:
1712         Likewise.
1713         * testsuite/30_threads/shared_timed_mutex/try_lock_until/clock_neg.cc:
1714         Likewise.
1715         * testsuite/30_threads/stop_token/1.cc: Likewise.
1716         * testsuite/30_threads/stop_token/2.cc: Likewise.
1717         * testsuite/30_threads/stop_token/stop_callback.cc: Likewise.
1718         * testsuite/30_threads/stop_token/stop_callback/deadlock.cc:
1719         Likewise.
1720         * testsuite/30_threads/stop_token/stop_callback/destructible_neg.cc:
1721         Likewise.
1722         * testsuite/30_threads/stop_token/stop_callback/invocable_neg.cc:
1723         Likewise.
1724         * testsuite/30_threads/stop_token/stop_callback/invoke.cc:
1725         Likewise.
1726         * testsuite/30_threads/stop_token/stop_source.cc: Likewise.
1727         * testsuite/30_threads/stop_token/stop_source/assign.cc:
1728         Likewise.
1729         * testsuite/30_threads/stop_token/stop_token.cc: Likewise.
1730         * testsuite/30_threads/stop_token/stop_token/stop_possible.cc:
1731         Likewise.
1732         * testsuite/30_threads/thread/id/operators_c++20.cc: Likewise.
1733         * testsuite/30_threads/timed_mutex/try_lock_until/clock_neg.cc:
1734         Likewise.
1735         * testsuite/30_threads/unique_lock/locking/clock_neg.cc:
1736         Likewise.
1737
1738 2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
1739
1740         * testsuite/27_io/basic_istream/extractors_character/char/lwg2499.cc:
1741         Remove dg-options -std=gnu++2a.
1742         * testsuite/27_io/basic_istream/extractors_character/char/lwg2499_neg.cc:
1743         Likewise.
1744         * testsuite/27_io/basic_istream/extractors_character/wchar_t/lwg2499.cc:
1745         Likewise.
1746         * testsuite/27_io/basic_istream/extractors_character/wchar_t/lwg2499_neg.cc:
1747         Likewise.
1748         * testsuite/27_io/basic_istringstream/cons/char/1.cc: Likewise.
1749         * testsuite/27_io/basic_istringstream/cons/wchar_t/1.cc:
1750         Likewise.
1751         * testsuite/27_io/basic_istringstream/str/char/2.cc: Likewise.
1752         * testsuite/27_io/basic_istringstream/str/wchar_t/2.cc:
1753         Likewise.
1754         * testsuite/27_io/basic_istringstream/view/char/1.cc: Likewise.
1755         * testsuite/27_io/basic_istringstream/view/wchar_t/1.cc:
1756         Likewise.
1757         * testsuite/27_io/basic_ostream/emit/1.cc: Likewise.
1758         * testsuite/27_io/basic_ostream/inserters_character/char/deleted.cc:
1759         Likewise.
1760         * testsuite/27_io/basic_ostream/inserters_character/wchar_t/deleted.cc:
1761         Likewise.
1762         * testsuite/27_io/basic_ostringstream/cons/char/1.cc: Likewise.
1763         * testsuite/27_io/basic_ostringstream/cons/wchar_t/1.cc:
1764         Likewise.
1765         * testsuite/27_io/basic_ostringstream/str/char/3.cc: Likewise.
1766         * testsuite/27_io/basic_ostringstream/str/wchar_t/3.cc:
1767         Likewise.
1768         * testsuite/27_io/basic_ostringstream/view/char/1.cc: Likewise.
1769         * testsuite/27_io/basic_ostringstream/view/wchar_t/1.cc:
1770         Likewise.
1771         * testsuite/27_io/basic_stringbuf/cons/char/2.cc: Likewise.
1772         * testsuite/27_io/basic_stringbuf/cons/wchar_t/2.cc: Likewise.
1773         * testsuite/27_io/basic_stringbuf/str/char/4.cc: Likewise.
1774         * testsuite/27_io/basic_stringbuf/str/wchar_t/4.cc: Likewise.
1775         * testsuite/27_io/basic_stringbuf/view/char/1.cc: Likewise.
1776         * testsuite/27_io/basic_stringbuf/view/wchar_t/1.cc: Likewise.
1777         * testsuite/27_io/basic_stringstream/cons/char/1.cc: Likewise.
1778         * testsuite/27_io/basic_stringstream/cons/char/97719.cc:
1779         Likewise.
1780         * testsuite/27_io/basic_stringstream/cons/wchar_t/1.cc:
1781         Likewise.
1782         * testsuite/27_io/basic_stringstream/str/char/5.cc: Likewise.
1783         * testsuite/27_io/basic_stringstream/str/wchar_t/5.cc.cc:
1784         Likewise.
1785         * testsuite/27_io/basic_stringstream/view/char/1.cc: Likewise.
1786         * testsuite/27_io/basic_stringstream/view/wchar_t/1.cc:
1787         Likewise.
1788         * testsuite/27_io/basic_syncbuf/1.cc: Likewise.
1789         * testsuite/27_io/basic_syncbuf/2.cc: Likewise.
1790         * testsuite/27_io/basic_syncbuf/basic_ops/1.cc: Likewise.
1791         * testsuite/27_io/basic_syncbuf/requirements/types.cc: Likewise.
1792         * testsuite/27_io/basic_syncbuf/sync_ops/1.cc: Likewise.
1793         * testsuite/27_io/basic_syncstream/1.cc: Likewise.
1794         * testsuite/27_io/basic_syncstream/2.cc: Likewise.
1795         * testsuite/27_io/basic_syncstream/basic_ops/1.cc: Likewise.
1796         * testsuite/27_io/basic_syncstream/requirements/types.cc:
1797         Likewise.
1798         * testsuite/27_io/filesystem/iterators/106201.cc: Likewise.
1799         * testsuite/27_io/filesystem/iterators/lwg3719.cc: Likewise.
1800         * testsuite/27_io/filesystem/path/factory/u8path-depr.cc:
1801         Likewise.
1802         * testsuite/27_io/filesystem/path/nonmember/cmp_c++20.cc:
1803         Likewise.
1804
1805 2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
1806
1807         * testsuite/26_numerics/accumulate/constexpr.cc: Remove
1808         dg-options -std=gnu++2a.
1809         * testsuite/26_numerics/accumulate/lwg2055.cc: Likewise.
1810         * testsuite/26_numerics/adjacent_difference/constexpr.cc:
1811         Likewise.
1812         * testsuite/26_numerics/bit/bit.cast/105027.cc: Likewise.
1813         * testsuite/26_numerics/bit/bit.cast/bit_cast.cc: Likewise.
1814         * testsuite/26_numerics/bit/bit.cast/version.cc: Likewise.
1815         * testsuite/26_numerics/bit/bit.count/countl_one.cc: Likewise.
1816         * testsuite/26_numerics/bit/bit.pow.two/bit_ceil_neg.cc:
1817         Likewise.
1818         * testsuite/26_numerics/bit/bit.pow.two/bit_floor.cc: Likewise.
1819         * testsuite/26_numerics/bit/bit.pow.two/bit_width.cc: Likewise.
1820         * testsuite/26_numerics/bit/bit.pow.two/lwg3656.cc: Likewise.
1821         * testsuite/26_numerics/bit/bit.rotate/rotl.cc: Likewise.
1822         * testsuite/26_numerics/bit/bit.rotate/rotr.cc: Likewise.
1823         * testsuite/26_numerics/bit/header-2.cc: Likewise.
1824         * testsuite/26_numerics/bit/header.cc: Likewise.
1825         * testsuite/26_numerics/complex/1.cc: Likewise.
1826         * testsuite/26_numerics/complex/2.cc: Likewise.
1827         * testsuite/26_numerics/complex/comparison_operators/more_constexpr.cc:
1828         Likewise.
1829         * testsuite/26_numerics/complex/operators/more_constexpr.cc:
1830         Likewise.
1831         * testsuite/26_numerics/complex/requirements/more_constexpr.cc:
1832         Likewise.
1833         * testsuite/26_numerics/complex/value_operations/more_constexpr.cc:
1834         Likewise.
1835         * testsuite/26_numerics/endian/1.cc: Likewise.
1836         * testsuite/26_numerics/endian/2.cc: Likewise.
1837         * testsuite/26_numerics/endian/3.cc: Likewise.
1838         * testsuite/26_numerics/exclusive_scan/constexpr.cc: Likewise.
1839         * testsuite/26_numerics/inclusive_scan/constexpr.cc: Likewise.
1840         * testsuite/26_numerics/inner_product/constexpr.cc: Likewise.
1841         * testsuite/26_numerics/inner_product/lwg2055.cc: Likewise.
1842         * testsuite/26_numerics/iota/constexpr.cc: Likewise.
1843         * testsuite/26_numerics/lerp/1.cc: Likewise.
1844         * testsuite/26_numerics/lerp/constexpr.cc: Likewise.
1845         * testsuite/26_numerics/lerp/version.cc: Likewise.
1846         * testsuite/26_numerics/midpoint/floating.cc: Likewise.
1847         * testsuite/26_numerics/midpoint/integral.cc: Likewise.
1848         * testsuite/26_numerics/midpoint/pointer.cc: Likewise.
1849         * testsuite/26_numerics/midpoint/pointer_neg.cc: Likewise.
1850         * testsuite/26_numerics/midpoint/version.cc: Likewise.
1851         * testsuite/26_numerics/numbers/1.cc: Likewise.
1852         * testsuite/26_numerics/numbers/2.cc: Likewise.
1853         * testsuite/26_numerics/numbers/3.cc: Likewise.
1854         * testsuite/26_numerics/numbers/float128.cc: Likewise.
1855         * testsuite/26_numerics/numbers/nonfloat_neg.cc: Likewise.
1856         * testsuite/26_numerics/partial_sum/constexpr.cc: Likewise.
1857         * testsuite/26_numerics/partial_sum/lwg2055.cc: Likewise.
1858         * testsuite/26_numerics/random/concept.cc: Likewise.
1859         * testsuite/26_numerics/reduce/constexpr.cc: Likewise.
1860         * testsuite/26_numerics/slice/compare.cc: Likewise.
1861         * testsuite/26_numerics/transform_exclusive_scan/constexpr.cc:
1862         Likewise.
1863         * testsuite/26_numerics/transform_inclusive_scan/constexpr.cc:
1864         Likewise.
1865         * testsuite/26_numerics/transform_reduce/constexpr.cc: Likewise.
1866
1867 2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
1868
1869         * testsuite/24_iterators/aliases.cc: Remove dg-options
1870         -std=gnu++2a.
1871         * testsuite/24_iterators/associated_types/incrementable.traits.cc:
1872         Likewise.
1873         * testsuite/24_iterators/associated_types/iterator.traits.cc:
1874         Likewise.
1875         * testsuite/24_iterators/associated_types/readable.traits.cc:
1876         Likewise.
1877         * testsuite/24_iterators/back_insert_iterator/constexpr.cc:
1878         Likewise.
1879         * testsuite/24_iterators/back_insert_iterator/pr93884.cc:
1880         Likewise.
1881         * testsuite/24_iterators/bidirectional/concept.cc: Likewise.
1882         * testsuite/24_iterators/common_iterator/1.cc: Likewise.
1883         * testsuite/24_iterators/common_iterator/100823.cc: Likewise.
1884         * testsuite/24_iterators/common_iterator/2.cc: Likewise.
1885         * testsuite/24_iterators/contiguous/concept.cc: Likewise.
1886         * testsuite/24_iterators/contiguous/tag.cc: Likewise.
1887         * testsuite/24_iterators/counted_iterator/1.cc: Likewise.
1888         * testsuite/24_iterators/counted_iterator/lwg3389.cc: Likewise.
1889         * testsuite/24_iterators/counted_iterator/lwg3643.cc: Likewise.
1890         * testsuite/24_iterators/customization_points/92894.cc:
1891         Likewise.
1892         * testsuite/24_iterators/customization_points/iter_move.cc:
1893         Likewise.
1894         * testsuite/24_iterators/customization_points/iter_swap.cc:
1895         Likewise.
1896         * testsuite/24_iterators/customization_points/lwg3420.cc:
1897         Likewise.
1898         * testsuite/24_iterators/forward/concept.cc: Likewise.
1899         * testsuite/24_iterators/front_insert_iterator/constexpr.cc:
1900         Likewise.
1901         * testsuite/24_iterators/front_insert_iterator/pr93884.cc:
1902         Likewise.
1903         * testsuite/24_iterators/headers/iterator/synopsis_c++20.cc:
1904         Likewise.
1905         * testsuite/24_iterators/indirect_callable/92894.cc: Likewise.
1906         * testsuite/24_iterators/indirect_callable/projected-adl.cc:
1907         Likewise.
1908         * testsuite/24_iterators/indirect_callable/projected.cc:
1909         Likewise.
1910         * testsuite/24_iterators/input/concept.cc: Likewise.
1911         * testsuite/24_iterators/insert_iterator/constexpr.cc: Likewise.
1912         * testsuite/24_iterators/istream_iterator/cons/sentinel.cc:
1913         Likewise.
1914         * testsuite/24_iterators/istream_iterator/sentinel.cc: Likewise.
1915         * testsuite/24_iterators/istreambuf_iterator/cons/sentinel.cc:
1916         Likewise.
1917         * testsuite/24_iterators/istreambuf_iterator/sentinel.cc:
1918         Likewise.
1919         * testsuite/24_iterators/move_iterator/cust.cc: Likewise.
1920         * testsuite/24_iterators/move_iterator/dr3435.cc: Likewise.
1921         * testsuite/24_iterators/move_iterator/input_iterator.cc:
1922         Likewise.
1923         * testsuite/24_iterators/move_iterator/lwg3390.cc: Likewise.
1924         * testsuite/24_iterators/move_iterator/lwg3391.cc: Likewise.
1925         * testsuite/24_iterators/move_iterator/move_only.cc: Likewise.
1926         * testsuite/24_iterators/move_iterator/p2520r0.cc: Likewise.
1927         * testsuite/24_iterators/move_iterator/rel_ops_c++20.cc:
1928         Likewise.
1929         * testsuite/24_iterators/move_iterator/sentinel.cc: Likewise.
1930         * testsuite/24_iterators/normal_iterator/cmp_c++20.cc: Likewise.
1931         * testsuite/24_iterators/output/concept.cc: Likewise.
1932         * testsuite/24_iterators/random_access/concept.cc: Likewise.
1933         * testsuite/24_iterators/range_access/range_access_cpp20.cc:
1934         Likewise.
1935         * testsuite/24_iterators/range_access/range_access_cpp20_neg.cc:
1936         Likewise.
1937         * testsuite/24_iterators/range_operations/100768.cc: Likewise.
1938         * testsuite/24_iterators/range_operations/advance.cc: Likewise.
1939         * testsuite/24_iterators/range_operations/advance_overflow.cc:
1940         Likewise.
1941         * testsuite/24_iterators/range_operations/distance.cc: Likewise.
1942         * testsuite/24_iterators/range_operations/lwg3392.cc: Likewise.
1943         * testsuite/24_iterators/range_operations/next.cc: Likewise.
1944         * testsuite/24_iterators/range_operations/prev.cc: Likewise.
1945         * testsuite/24_iterators/reverse_iterator/cust.cc: Likewise.
1946         * testsuite/24_iterators/reverse_iterator/dr3435.cc: Likewise.
1947         * testsuite/24_iterators/reverse_iterator/rel_ops_c++20.cc:
1948         Likewise.
1949
1950 2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
1951
1952         * testsuite/23_containers/array/comparison_operators/96851.cc:
1953         Remove dg-options -std=gnu++2a.
1954         * testsuite/23_containers/array/comparison_operators/constexpr.cc:
1955         Likewise.
1956         * testsuite/23_containers/array/creation/1.cc: Likewise.
1957         * testsuite/23_containers/array/creation/110167.cc: Likewise.
1958         * testsuite/23_containers/array/creation/2.cc: Likewise.
1959         * testsuite/23_containers/array/creation/3_neg.cc: Likewise.
1960         * testsuite/23_containers/array/requirements/constexpr_fill.cc:
1961         Likewise.
1962         * testsuite/23_containers/array/requirements/constexpr_swap.cc:
1963         Likewise.
1964         * testsuite/23_containers/deque/48101-3_neg.cc: Likewise.
1965         * testsuite/23_containers/deque/erasure.cc: Likewise.
1966         * testsuite/23_containers/deque/modifiers/emplace/92878_92947.cc:
1967         Likewise.
1968         * testsuite/23_containers/deque/operators/cmp_c++20.cc:
1969         Likewise.
1970         * testsuite/23_containers/forward_list/48101-3_neg.cc: Likewise.
1971         * testsuite/23_containers/forward_list/cmp_c++20.cc: Likewise.
1972         * testsuite/23_containers/forward_list/erasure.cc: Likewise.
1973         * testsuite/23_containers/forward_list/modifiers/92878_92947.cc:
1974         Likewise.
1975         * testsuite/23_containers/forward_list/operations/remove_cxx20_return.cc:
1976         Likewise.
1977         * testsuite/23_containers/forward_list/operations/unique_cxx20_return.cc:
1978         Likewise.
1979         * testsuite/23_containers/list/48101-3_neg.cc: Likewise.
1980         * testsuite/23_containers/list/cmp_c++20.cc: Likewise.
1981         * testsuite/23_containers/list/erasure.cc: Likewise.
1982         * testsuite/23_containers/list/modifiers/emplace/92878_92947.cc:
1983         Likewise.
1984         * testsuite/23_containers/list/operations/remove_cxx20_return.cc:
1985         Likewise.
1986         * testsuite/23_containers/list/operations/unique_cxx20_return.cc:
1987         Likewise.
1988         * testsuite/23_containers/map/48101-3_neg.cc: Likewise.
1989         * testsuite/23_containers/map/erasure.cc: Likewise.
1990         * testsuite/23_containers/map/modifiers/emplace/92878_92947.cc:
1991         Likewise.
1992         * testsuite/23_containers/map/operations/contains.cc: Likewise.
1993         * testsuite/23_containers/map/operators/cmp_c++20.cc: Likewise.
1994         * testsuite/23_containers/multimap/48101-3_neg.cc: Likewise.
1995         * testsuite/23_containers/multimap/modifiers/emplace/92878_92947.cc:
1996         Likewise.
1997         * testsuite/23_containers/multimap/operations/contains.cc:
1998         Likewise.
1999         * testsuite/23_containers/multimap/operators/cmp_c++20.cc:
2000         Likewise.
2001         * testsuite/23_containers/multiset/48101-3_neg.cc: Likewise.
2002         * testsuite/23_containers/multiset/modifiers/emplace/92878_92947.cc:
2003         Likewise.
2004         * testsuite/23_containers/multiset/operations/contains.cc:
2005         Likewise.
2006         * testsuite/23_containers/multiset/operators/cmp_c++20.cc:
2007         Likewise.
2008         * testsuite/23_containers/priority_queue/92878_92947.cc:
2009         Likewise.
2010         * testsuite/23_containers/queue/92878_92947.cc: Likewise.
2011         * testsuite/23_containers/queue/cmp_c++20.cc: Likewise.
2012         * testsuite/23_containers/set/48101-3_neg.cc: Likewise.
2013         * testsuite/23_containers/set/erasure.cc: Likewise.
2014         * testsuite/23_containers/set/modifiers/emplace/92878_92947.cc:
2015         Likewise.
2016         * testsuite/23_containers/set/operations/contains.cc: Likewise.
2017         * testsuite/23_containers/set/operators/cmp_c++20.cc: Likewise.
2018         * testsuite/23_containers/span/1.cc: Likewise.
2019         * testsuite/23_containers/span/101411.cc: Likewise.
2020         * testsuite/23_containers/span/2.cc: Likewise.
2021         * testsuite/23_containers/span/deduction.cc: Likewise.
2022         * testsuite/23_containers/span/explicit.cc: Likewise.
2023         * testsuite/23_containers/span/layout_compat.cc: Likewise.
2024         * testsuite/23_containers/span/lwg3255.cc: Likewise.
2025         * testsuite/23_containers/span/nothrow_cons.cc: Likewise.
2026         * testsuite/23_containers/span/trivially_copyable.cc: Likewise.
2027         * testsuite/23_containers/stack/92878_92947.cc: Likewise.
2028         * testsuite/23_containers/stack/cmp_c++20.cc: Likewise.
2029         * testsuite/23_containers/unordered_map/48101-3_neg.cc:
2030         Likewise.
2031         * testsuite/23_containers/unordered_map/erasure.cc: Likewise.
2032         * testsuite/23_containers/unordered_map/modifiers/92878_92947.cc:
2033         Likewise.
2034         * testsuite/23_containers/unordered_map/operations/1.cc:
2035         Likewise.
2036         * testsuite/23_containers/unordered_map/operations/contains.cc:
2037         Likewise.
2038         * testsuite/23_containers/unordered_multimap/48101-3_neg.cc:
2039         Likewise.
2040         * testsuite/23_containers/unordered_multimap/modifiers/92878_92947.cc:
2041         Likewise.
2042         * testsuite/23_containers/unordered_multimap/operations/1.cc:
2043         Likewise.
2044         * testsuite/23_containers/unordered_multimap/operations/contains.cc:
2045         Likewise.
2046         * testsuite/23_containers/unordered_multiset/48101-3_neg.cc:
2047         Likewise.
2048         * testsuite/23_containers/unordered_multiset/modifiers/92878_92947.cc:
2049         Likewise.
2050         * testsuite/23_containers/unordered_multiset/operations/1.cc:
2051         Likewise.
2052         * testsuite/23_containers/unordered_multiset/operations/contains.cc:
2053         Likewise.
2054         * testsuite/23_containers/unordered_set/48101-3_neg.cc:
2055         Likewise.
2056         * testsuite/23_containers/unordered_set/erasure.cc: Likewise.
2057         * testsuite/23_containers/unordered_set/modifiers/92878_92947.cc:
2058         Likewise.
2059         * testsuite/23_containers/unordered_set/operations/1.cc:
2060         Likewise.
2061         * testsuite/23_containers/unordered_set/operations/contains.cc:
2062         Likewise.
2063         * testsuite/23_containers/vector/48101-3_neg.cc: Likewise.
2064         * testsuite/23_containers/vector/bool/capacity/constexpr.cc:
2065         Likewise.
2066         * testsuite/23_containers/vector/bool/cmp_c++20.cc: Likewise.
2067         * testsuite/23_containers/vector/bool/cons/constexpr.cc:
2068         Likewise.
2069         * testsuite/23_containers/vector/bool/element_access/constexpr.cc:
2070         Likewise.
2071         * testsuite/23_containers/vector/bool/iterator_c++20.cc:
2072         Likewise.
2073         * testsuite/23_containers/vector/bool/modifiers/assign/constexpr.cc:
2074         Likewise.
2075         * testsuite/23_containers/vector/bool/modifiers/constexpr.cc:
2076         Likewise.
2077         * testsuite/23_containers/vector/bool/modifiers/swap/constexpr.cc:
2078         Likewise.
2079         * testsuite/23_containers/vector/capacity/constexpr.cc:
2080         Likewise.
2081         * testsuite/23_containers/vector/cmp_c++20.cc: Likewise.
2082         * testsuite/23_containers/vector/cons/constexpr.cc: Likewise.
2083         * testsuite/23_containers/vector/data_access/constexpr.cc:
2084         Likewise.
2085         * testsuite/23_containers/vector/element_access/constexpr.cc:
2086         Likewise.
2087         * testsuite/23_containers/vector/erasure.cc: Likewise.
2088         * testsuite/23_containers/vector/modifiers/assign/constexpr.cc:
2089         Likewise.
2090         * testsuite/23_containers/vector/modifiers/constexpr.cc:
2091         Likewise.
2092         * testsuite/23_containers/vector/modifiers/emplace/92878_92947.cc:
2093         Likewise.
2094         * testsuite/23_containers/vector/modifiers/swap/constexpr.cc:
2095         Likewise.
2096         * testsuite/23_containers/vector/requirements/version.cc:
2097         Likewise.
2098
2099 2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
2100
2101         * testsuite/21_strings/basic_string/cons/char/105995.cc: Remove
2102         dg-options -std=gnu++20.
2103         * testsuite/21_strings/basic_string/cons/char/constexpr.cc:
2104         Likewise.
2105         * testsuite/21_strings/basic_string/cons/wchar_t/constexpr.cc:
2106         Likewise.
2107         * testsuite/21_strings/basic_string/erasure.cc: Likewise.
2108         * testsuite/21_strings/basic_string/hash/hash_char8_t.cc:
2109         Likewise.
2110         * testsuite/21_strings/basic_string/literals/constexpr.cc:
2111         Likewise.
2112         * testsuite/21_strings/basic_string/modifiers/constexpr.cc:
2113         Likewise.
2114         * testsuite/21_strings/basic_string/modifiers/swap/constexpr-wchar_t.cc:
2115         Likewise.
2116         * testsuite/21_strings/basic_string/modifiers/swap/constexpr.cc:
2117         Likewise.
2118         * testsuite/21_strings/basic_string/operations/ends_with/char.cc:
2119         Likewise.
2120         * testsuite/21_strings/basic_string/operations/ends_with/nonnull.cc:
2121         Likewise.
2122         * testsuite/21_strings/basic_string/operations/ends_with/wchar_t.cc:
2123         Likewise.
2124         * testsuite/21_strings/basic_string/operations/starts_with/char.cc:
2125         Likewise.
2126         * testsuite/21_strings/basic_string/operations/starts_with/nonnull.cc:
2127         Likewise.
2128         * testsuite/21_strings/basic_string/operations/starts_with/wchar_t.cc:
2129         Likewise.
2130         * testsuite/21_strings/basic_string/operators/char/cmp_c++20.cc:
2131         Likewise.
2132         * testsuite/21_strings/basic_string/operators/wchar_t/cmp_c++20.cc:
2133         Likewise.
2134         * testsuite/21_strings/basic_string_view/cons/char/range.cc:
2135         Likewise.
2136         * testsuite/21_strings/basic_string_view/operations/copy/char/constexpr.cc:
2137         Likewise.
2138         * testsuite/21_strings/basic_string_view/operations/copy/wchar_t/constexpr.cc:
2139         Likewise.
2140         * testsuite/21_strings/basic_string_view/operations/ends_with/char.cc:
2141         Likewise.
2142         * testsuite/21_strings/basic_string_view/operations/ends_with/nonnull.cc:
2143         Likewise.
2144         * testsuite/21_strings/basic_string_view/operations/ends_with/wchar_t.cc:
2145         Likewise.
2146         * testsuite/21_strings/basic_string_view/operations/starts_with/char.cc:
2147         Likewise.
2148         * testsuite/21_strings/basic_string_view/operations/starts_with/nonnull.cc:
2149         Likewise.
2150         * testsuite/21_strings/basic_string_view/operations/starts_with/wchar_t.cc:
2151         Likewise.
2152         * testsuite/21_strings/basic_string_view/operators/char/cmp_c++20.cc:
2153         Likewise.
2154         * testsuite/21_strings/basic_string_view/operators/wchar_t/cmp_c++20.cc:
2155         Likewise.
2156         * testsuite/21_strings/basic_string_view/requirements/constexpr_iter.cc:
2157         Likewise.
2158         * testsuite/21_strings/char_traits/requirements/constexpr_functions_c++20.cc:
2159         Likewise.
2160
2161 2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
2162
2163         * testsuite/20_util/allocator/105975.cc: Remove dg-options
2164         -std=gnu++2a.
2165         * testsuite/20_util/allocator/rebind_c++20.cc: Likewise.
2166         * testsuite/20_util/allocator/requirements/constexpr.cc:
2167         Likewise.
2168         * testsuite/20_util/allocator/requirements/typedefs_c++20.cc:
2169         Likewise.
2170         * testsuite/20_util/allocator_traits/header-2.cc: Likewise.
2171         * testsuite/20_util/allocator_traits/header.cc: Likewise.
2172         * testsuite/20_util/allocator_traits/members/92878_92947.cc:
2173         Likewise.
2174         * testsuite/20_util/any/assign/92878_92947.cc: Likewise.
2175         * testsuite/20_util/any/cons/92878_92947.cc: Likewise.
2176         * testsuite/20_util/assume_aligned/1.cc: Likewise.
2177         * testsuite/20_util/assume_aligned/2_neg.cc: Likewise.
2178         * testsuite/20_util/assume_aligned/3.cc: Likewise.
2179         * testsuite/20_util/assume_aligned/97132.cc: Likewise.
2180         * testsuite/20_util/bind/constexpr.cc: Likewise.
2181         * testsuite/20_util/bitset/operations/96303.cc: Likewise.
2182         * testsuite/20_util/common_reference/100894.cc: Likewise.
2183         * testsuite/20_util/common_reference/requirements/alias_decl.cc:
2184         Likewise.
2185         * testsuite/20_util/common_reference/requirements/explicit_instantiation.cc:
2186         Likewise.
2187         * testsuite/20_util/common_reference/requirements/typedefs.cc:
2188         Likewise.
2189         * testsuite/20_util/duration/comparison_operators/three_way.cc:
2190         Likewise.
2191         * testsuite/20_util/exchange/constexpr.cc: Likewise.
2192         * testsuite/20_util/exchange/noexcept.cc: Likewise.
2193         * testsuite/20_util/from_chars/1_c++20_neg.cc: Likewise.
2194         * testsuite/20_util/from_chars/compare.cc: Likewise.
2195         * testsuite/20_util/function_objects/bind_front/1.cc: Likewise.
2196         * testsuite/20_util/function_objects/bind_front/107784.cc:
2197         Likewise.
2198         * testsuite/20_util/function_objects/bind_front/111327.cc:
2199         Likewise.
2200         * testsuite/20_util/function_objects/bind_front/2.cc: Likewise.
2201         * testsuite/20_util/function_objects/bind_front/97101.cc:
2202         Likewise.
2203         * testsuite/20_util/function_objects/bind_front/constexpr.cc:
2204         Likewise.
2205         * testsuite/20_util/function_objects/constexpr_searcher.cc:
2206         Likewise.
2207         * testsuite/20_util/function_objects/identity/1.cc: Likewise.
2208         * testsuite/20_util/function_objects/invoke/constexpr.cc:
2209         Likewise.
2210         * testsuite/20_util/function_objects/mem_fn/constexpr.cc:
2211         Likewise.
2212         * testsuite/20_util/function_objects/not_fn/constexpr.cc:
2213         Likewise.
2214         * testsuite/20_util/integer_comparisons/1.cc: Likewise.
2215         * testsuite/20_util/integer_comparisons/2.cc: Likewise.
2216         * testsuite/20_util/integer_comparisons/equal.cc: Likewise.
2217         * testsuite/20_util/integer_comparisons/equal_neg.cc: Likewise.
2218         * testsuite/20_util/integer_comparisons/greater.cc: Likewise.
2219         * testsuite/20_util/integer_comparisons/greater_equal.cc:
2220         Likewise.
2221         * testsuite/20_util/integer_comparisons/greater_equal_neg.cc:
2222         Likewise.
2223         * testsuite/20_util/integer_comparisons/greater_neg.cc:
2224         Likewise.
2225         * testsuite/20_util/integer_comparisons/in_range.cc: Likewise.
2226         * testsuite/20_util/integer_comparisons/in_range_neg.cc:
2227         Likewise.
2228         * testsuite/20_util/integer_comparisons/less.cc: Likewise.
2229         * testsuite/20_util/integer_comparisons/less_equal.cc: Likewise.
2230         * testsuite/20_util/integer_comparisons/less_equal_neg.cc:
2231         Likewise.
2232         * testsuite/20_util/integer_comparisons/less_neg.cc: Likewise.
2233         * testsuite/20_util/integer_comparisons/not_equal.cc: Likewise.
2234         * testsuite/20_util/integer_comparisons/not_equal_neg.cc:
2235         Likewise.
2236         * testsuite/20_util/is_bounded_array/requirements/explicit_instantiation.cc:
2237         Likewise.
2238         * testsuite/20_util/is_bounded_array/requirements/typedefs.cc:
2239         Likewise.
2240         * testsuite/20_util/is_bounded_array/value.cc: Likewise.
2241         * testsuite/20_util/is_constant_evaluated/1.cc: Likewise.
2242         * testsuite/20_util/is_constant_evaluated/noexcept.cc: Likewise.
2243         * testsuite/20_util/is_constructible/92878_92947.cc: Likewise.
2244         * testsuite/20_util/is_layout_compatible/is_corresponding_member.cc:
2245         Likewise.
2246         * testsuite/20_util/is_layout_compatible/value.cc: Likewise.
2247         * testsuite/20_util/is_layout_compatible/version.cc: Likewise.
2248         * testsuite/20_util/is_nothrow_constructible/value_c++20.cc:
2249         Likewise.
2250         * testsuite/20_util/is_nothrow_convertible/requirements/explicit_instantiation.cc:
2251         Likewise.
2252         * testsuite/20_util/is_nothrow_convertible/requirements/typedefs.cc:
2253         Likewise.
2254         * testsuite/20_util/is_nothrow_convertible/value.cc: Likewise.
2255         * testsuite/20_util/is_pod/deprecated-2a.cc: Likewise.
2256         * testsuite/20_util/is_pointer_interconvertible/value.cc:
2257         Likewise.
2258         * testsuite/20_util/is_pointer_interconvertible/version.cc:
2259         Likewise.
2260         * testsuite/20_util/is_pointer_interconvertible/with_class.cc:
2261         Likewise.
2262         * testsuite/20_util/is_unbounded_array/requirements/explicit_instantiation.cc:
2263         Likewise.
2264         * testsuite/20_util/is_unbounded_array/requirements/typedefs.cc:
2265         Likewise.
2266         * testsuite/20_util/is_unbounded_array/value.cc: Likewise.
2267         * testsuite/20_util/optional/assignment/92878_92947.cc:
2268         Likewise.
2269         * testsuite/20_util/optional/cons/92878_92947.cc: Likewise.
2270         * testsuite/20_util/optional/constexpr/assign.cc: Likewise.
2271         * testsuite/20_util/optional/constexpr/cons/conv.cc: Likewise.
2272         * testsuite/20_util/optional/constexpr/modifiers.cc: Likewise.
2273         * testsuite/20_util/optional/constexpr/swap.cc: Likewise.
2274         * testsuite/20_util/optional/relops/96269.cc: Likewise.
2275         * testsuite/20_util/optional/relops/three_way.cc: Likewise.
2276         * testsuite/20_util/pair/comparison_operators/constexpr_c++20.cc:
2277         Likewise.
2278         * testsuite/20_util/pair/cons/92878_92947.cc: Likewise.
2279         * testsuite/20_util/pair/constexpr_assign.cc: Likewise.
2280         * testsuite/20_util/pair/constexpr_swap.cc: Likewise.
2281         * testsuite/20_util/pair/requirements/structural.cc: Likewise.
2282         * testsuite/20_util/pointer_traits/pointer_to_constexpr.cc:
2283         Likewise.
2284         * testsuite/20_util/polymorphic_allocator/allocate_object.cc:
2285         Likewise.
2286         * testsuite/20_util/polymorphic_allocator/construct_c++2a.cc:
2287         Likewise.
2288         * testsuite/20_util/polymorphic_allocator/lwg3237.cc: Likewise.
2289         * testsuite/20_util/reference_wrapper/constexpr.cc: Likewise.
2290         * testsuite/20_util/reference_wrapper/incomplete.cc: Likewise.
2291         * testsuite/20_util/remove_cvref/requirements/alias_decl.cc:
2292         Likewise.
2293         * testsuite/20_util/remove_cvref/requirements/explicit_instantiation.cc:
2294         Likewise.
2295         * testsuite/20_util/remove_cvref/value.cc: Likewise.
2296         * testsuite/20_util/scoped_allocator/construct_pair_c++2a.cc:
2297         Likewise.
2298         * testsuite/20_util/shared_ptr/atomic/atomic_shared_ptr.cc:
2299         Likewise.
2300         * testsuite/20_util/shared_ptr/casts/rval.cc: Likewise.
2301         * testsuite/20_util/shared_ptr/comparison/cmp_c++20.cc:
2302         Likewise.
2303         * testsuite/20_util/shared_ptr/cons/alias-rval.cc: Likewise.
2304         * testsuite/20_util/shared_ptr/creation/92878_92947.cc:
2305         Likewise.
2306         * testsuite/20_util/shared_ptr/creation/array.cc: Likewise.
2307         * testsuite/20_util/shared_ptr/creation/overwrite.cc: Likewise.
2308         * testsuite/20_util/shared_ptr/creation/version.cc: Likewise.
2309         * testsuite/20_util/time_point/4.cc: Likewise.
2310         * testsuite/20_util/time_point/comparison_operators/three_way.cc:
2311         Likewise.
2312         * testsuite/20_util/to_address/1.cc: Likewise.
2313         * testsuite/20_util/to_address/1_neg.cc: Likewise.
2314         * testsuite/20_util/to_address/debug.cc: Likewise.
2315         * testsuite/20_util/to_address/lwg3545.cc: Likewise.
2316         * testsuite/20_util/to_chars/compare.cc: Likewise.
2317         * testsuite/20_util/tuple/comparison_operators/three_way.cc:
2318         Likewise.
2319         * testsuite/20_util/tuple/cons/102270.cc: Likewise.
2320         * testsuite/20_util/tuple/cons/constexpr_allocator_arg_t.cc:
2321         Likewise.
2322         * testsuite/20_util/tuple/constexpr_swap.cc: Likewise.
2323         * testsuite/20_util/type_identity/requirements/alias_decl.cc:
2324         Likewise.
2325         * testsuite/20_util/type_identity/requirements/explicit_instantiation.cc:
2326         Likewise.
2327         * testsuite/20_util/type_identity/requirements/typedefs.cc:
2328         Likewise.
2329         * testsuite/20_util/typeindex/comparison_operators_c++20.cc:
2330         Likewise.
2331         * testsuite/20_util/unique_ptr/comparison/compare_c++20.cc:
2332         Likewise.
2333         * testsuite/20_util/unique_ptr/creation/92878_92947.cc:
2334         Likewise.
2335         * testsuite/20_util/unique_ptr/creation/for_overwrite.cc:
2336         Likewise.
2337         * testsuite/20_util/unique_ptr/creation/for_overwrite__neg.cc:
2338         Likewise.
2339         * testsuite/20_util/unique_ptr/io/lwg2948.cc: Likewise.
2340         * testsuite/20_util/unwrap_reference/1.cc: Likewise.
2341         * testsuite/20_util/unwrap_reference/2.cc: Likewise.
2342         * testsuite/20_util/unwrap_reference/3.cc: Likewise.
2343         * testsuite/20_util/uses_allocator/92878_92947.cc: Likewise.
2344         * testsuite/20_util/uses_allocator/lwg3527.cc: Likewise.
2345         * testsuite/20_util/uses_allocator/make_obj.cc: Likewise.
2346         * testsuite/20_util/uses_allocator/uninitialized_construct.cc:
2347         Likewise.
2348         * testsuite/20_util/variant/92878_92947.cc: Likewise.
2349         * testsuite/20_util/variant/95915.cc: Likewise.
2350         * testsuite/20_util/variant/constexpr.cc: Likewise.
2351         * testsuite/20_util/variant/relops/three_way.cc: Likewise.
2352         * testsuite/20_util/variant/visit_neg.cc: Likewise.
2353         * testsuite/20_util/variant/visit_r.cc: Likewise.
2354         * testsuite/20_util/weak_ptr/atomic_weak_ptr.cc: Likewise.
2355
2356 2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
2357
2358         * testsuite/18_support/comparisons/algorithms/fallback.cc:
2359         Remove dg-options -std=gnu++2a.
2360         * testsuite/18_support/comparisons/algorithms/partial_order.cc:
2361         Likewise.
2362         * testsuite/18_support/comparisons/algorithms/strong_order.cc:
2363         Likewise.
2364         * testsuite/18_support/comparisons/algorithms/strong_order_floats.cc:
2365         Likewise.
2366         * testsuite/18_support/comparisons/algorithms/weak_order.cc:
2367         Likewise.
2368         * testsuite/18_support/comparisons/categories/94565.cc:
2369         Likewise.
2370         * testsuite/18_support/comparisons/categories/partialord.cc:
2371         Likewise.
2372         * testsuite/18_support/comparisons/categories/strongord.cc:
2373         Likewise.
2374         * testsuite/18_support/comparisons/categories/weakord.cc:
2375         Likewise.
2376         * testsuite/18_support/comparisons/categories/zero_neg.cc:
2377         Likewise.
2378         * testsuite/18_support/comparisons/common/1.cc: Likewise.
2379         * testsuite/18_support/comparisons/object/93479.cc: Likewise.
2380         * testsuite/18_support/comparisons/object/lwg3530.cc: Likewise.
2381
2382 2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
2383
2384         * testsuite/29_atomics/atomic/compare_exchange_padding.cc:
2385         Remove dg-options -std=gnu++2a.
2386         * testsuite/29_atomics/atomic/cons/value_init.cc: Likewise.
2387         * testsuite/29_atomics/atomic/lock_free_aliases.cc: Likewise.
2388         * testsuite/29_atomics/atomic/requirements/types_neg.cc:
2389         Likewise.
2390         * testsuite/29_atomics/atomic/wait_notify/1.cc: Likewise.
2391         * testsuite/29_atomics/atomic/wait_notify/100334.cc: Likewise.
2392         * testsuite/29_atomics/atomic/wait_notify/102994.cc: Likewise.
2393         * testsuite/29_atomics/atomic/wait_notify/2.cc: Likewise.
2394         * testsuite/29_atomics/atomic/wait_notify/bool.cc: Likewise.
2395         * testsuite/29_atomics/atomic/wait_notify/generic.cc: Likewise.
2396         * testsuite/29_atomics/atomic/wait_notify/pointers.cc: Likewise.
2397         * testsuite/29_atomics/atomic_flag/cons/value_init.cc: Likewise.
2398         * testsuite/29_atomics/atomic_flag/test/explicit.cc: Likewise.
2399         * testsuite/29_atomics/atomic_flag/test/implicit.cc: Likewise.
2400         * testsuite/29_atomics/atomic_flag/wait_notify/1.cc: Likewise.
2401         * testsuite/29_atomics/atomic_float/1.cc: Likewise.
2402         * testsuite/29_atomics/atomic_float/95282.cc: Likewise.
2403         * testsuite/29_atomics/atomic_float/requirements.cc: Likewise.
2404         * testsuite/29_atomics/atomic_float/value_init.cc: Likewise.
2405         * testsuite/29_atomics/atomic_float/wait_notify.cc: Likewise.
2406         * testsuite/29_atomics/atomic_integral/cons/value_init.cc:
2407         Likewise.
2408         * testsuite/29_atomics/atomic_integral/wait_notify.cc: Likewise.
2409         * testsuite/29_atomics/atomic_ref/compare_exchange_padding.cc:
2410         Likewise.
2411         * testsuite/29_atomics/atomic_ref/deduction.cc: Likewise.
2412         * testsuite/29_atomics/atomic_ref/float.cc: Likewise.
2413         * testsuite/29_atomics/atomic_ref/generic.cc: Likewise.
2414         * testsuite/29_atomics/atomic_ref/integral.cc: Likewise.
2415         * testsuite/29_atomics/atomic_ref/pointer.cc: Likewise.
2416         * testsuite/29_atomics/atomic_ref/requirements.cc: Likewise.
2417         * testsuite/29_atomics/headers/atomic/types_std_c++20.cc:
2418         Likewise.
2419         * testsuite/29_atomics/headers/atomic/types_std_c++20_neg.cc:
2420         Likewise.
2421         * testsuite/29_atomics/headers/atomic/types_std_c++2a.cc:
2422         Likewise.
2423         * testsuite/29_atomics/headers/atomic/types_std_c++2a_neg.cc:
2424         Likewise.
2425
2426 2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
2427
2428         * testsuite/27_io/basic_filebuf/native_handle/char/1.cc: New test.
2429         * testsuite/27_io/basic_filebuf/native_handle/wchar_t/1.cc: New test.
2430
2431 2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
2432
2433         * acinclude.m4 (GLIBCXX_CHECK_FILEBUF_NATIVE_HANDLES): New
2434         macro.
2435         * config.h.in: Regenerate.
2436         * config/abi/pre/gnu.ver (GLIBCXX_3.4.32): Export new
2437         basic_filebuf members.
2438         * config/io/basic_file_stdio.cc (__basic_file::native_handle):
2439         Define new function.
2440         * config/io/basic_file_stdio.h (__basic_file::native_handle):
2441         Declare new function.
2442         * configure: Regenerate.
2443         * configure.ac: Use GLIBCXX_CHECK_FILEBUF_NATIVE_HANDLES.
2444         * include/bits/version.def (fstream_native_handles): New macro.
2445         * include/bits/version.h: Regenerate.
2446         * include/std/fstream (basic_filebuf::native_handle)
2447         (basic_fstream::native_handle, basic_ifstream::native_handle)
2448         (basic_ofstream::native_handle): New functions.
2449         * src/c++11/Makefile.am: Move compilation of basic_file.cc,
2450         locale_init.cc and localename.cc to here.
2451         * src/c++11/Makefile.in: Regenerate.
2452         * src/c++98/locale_init.cc: Moved to...
2453         * src/c++11/locale_init.cc: ...here.
2454         * src/c++98/localename.cc: Moved to...
2455         * src/c++11/localename.cc: ...here.
2456         * src/c++98/Makefile.am: Remove basic_file.cc, locale_init.cc
2457         and localename.cc from here.
2458         * src/c++98/Makefile.in: Regenerate.
2459         * testsuite/27_io/basic_filebuf/native_handle/version.cc: New test.
2460         * testsuite/27_io/basic_fstream/native_handle/char/1.cc: New test.
2461         * testsuite/27_io/basic_fstream/native_handle/wchar_t/1.cc: New test.
2462         * testsuite/27_io/basic_ifstream/native_handle/char/1.cc: New test.
2463         * testsuite/27_io/basic_ifstream/native_handle/wchar_t/1.cc: New test.
2464         * testsuite/27_io/basic_ofstream/native_handle/char/1.cc: New test.
2465         * testsuite/27_io/basic_ofstream/native_handle/wchar_t/1.cc: New test.
2466
2467 2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
2468
2469         * testsuite/libstdc++-dg/conformance.exp: Add log line when
2470         using testsuite_files.
2471
2472 2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
2473
2474         * testsuite/20_util/shared_ptr/atomic/3.cc: Simplify dg
2475         directives.
2476         * testsuite/20_util/shared_ptr/thread/default_weaktoshared.cc:
2477         Likewise.
2478         * testsuite/20_util/shared_ptr/thread/mutex_weaktoshared.cc:
2479         Likewise.
2480         * testsuite/20_util/synchronized_pool_resource/allocate.cc:
2481         Likewise.
2482         * testsuite/20_util/synchronized_pool_resource/allocate_single.cc:
2483         Likewise.
2484         * testsuite/20_util/synchronized_pool_resource/cons.cc:
2485         Likewise.
2486         * testsuite/20_util/synchronized_pool_resource/cons_single.cc:
2487         Likewise.
2488         * testsuite/20_util/synchronized_pool_resource/is_equal.cc:
2489         Likewise.
2490         * testsuite/20_util/synchronized_pool_resource/multithreaded.cc:
2491         Likewise.
2492         * testsuite/20_util/synchronized_pool_resource/options.cc:
2493         Likewise.
2494         * testsuite/20_util/synchronized_pool_resource/release.cc:
2495         Likewise.
2496         * testsuite/20_util/synchronized_pool_resource/release_single.cc:
2497         Likewise.
2498         * testsuite/30_threads/condition_variable_any/stop_token/wait_on.cc:
2499         Likewise.
2500         * testsuite/30_threads/stop_token/stop_callback/deadlock-mt.cc:
2501         Likewise.
2502         * testsuite/30_threads/stop_token/stop_callback/destroy.cc:
2503         Likewise.
2504
2505 2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
2506
2507         * testsuite/23_containers/span/back_assert_neg.cc: Remove
2508         dg-options and add effective target selector to dg-do. Add
2509         no_pch.
2510         * testsuite/23_containers/span/back_neg.cc: Likewise.
2511         * testsuite/23_containers/span/cons_1_assert_neg.cc: Likewise.
2512         * testsuite/23_containers/span/cons_2_assert_neg.cc: Likewise.
2513         * testsuite/23_containers/span/first_2_assert_neg.cc: Likewise.
2514         * testsuite/23_containers/span/first_assert_neg.cc: Likewise.
2515         * testsuite/23_containers/span/first_neg.cc: Likewise.
2516         * testsuite/23_containers/span/front_assert_neg.cc: Likewise.
2517         * testsuite/23_containers/span/front_neg.cc: Likewise.
2518         * testsuite/23_containers/span/index_op_assert_neg.cc: Likewise.
2519         * testsuite/23_containers/span/index_op_neg.cc: Likewise.
2520         * testsuite/23_containers/span/last_2_assert_neg.cc: Likewise.
2521         * testsuite/23_containers/span/last_assert_neg.cc: Likewise.
2522         * testsuite/23_containers/span/last_neg.cc: Likewise.
2523         * testsuite/23_containers/span/subspan_2_assert_neg.cc:
2524         Likewise.
2525         * testsuite/23_containers/span/subspan_3_assert_neg.cc:
2526         Likewise.
2527         * testsuite/23_containers/span/subspan_4_assert_neg.cc:
2528         Likewise.
2529         * testsuite/23_containers/span/subspan_5_assert_neg.cc:
2530         Likewise.
2531         * testsuite/23_containers/span/subspan_6_assert_neg.cc:
2532         Likewise.
2533         * testsuite/23_containers/span/subspan_assert_neg.cc: Likewise.
2534         * testsuite/23_containers/span/subspan_neg.cc: Likewise.
2535         * testsuite/24_iterators/range_operations/advance_debug_neg.cc:
2536         Likewise.
2537
2538 2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
2539
2540         * testsuite/18_support/headers/limits/synopsis_cxx23.cc: Remove
2541         dg-options.
2542         * testsuite/18_support/headers/stdfloat/types_std.cc: Likewise.
2543         * testsuite/18_support/type_info/constexpr.cc: Likewise.
2544         * testsuite/19_diagnostics/stacktrace/current.cc: Likewise.
2545         * testsuite/19_diagnostics/stacktrace/entry.cc: Likewise.
2546         * testsuite/19_diagnostics/stacktrace/stacktrace.cc: Likewise.
2547         * testsuite/19_diagnostics/stacktrace/synopsis.cc: Likewise.
2548         * testsuite/19_diagnostics/stacktrace/version.cc: Likewise.
2549         * testsuite/20_util/aligned_storage/deprecated-2b.cc: Likewise.
2550         * testsuite/20_util/aligned_union/deprecated-2b.cc: Likewise.
2551         * testsuite/20_util/bitset/access/constexpr.cc: Likewise.
2552         * testsuite/20_util/bitset/cons/constexpr_c++23.cc: Likewise.
2553         * testsuite/20_util/bitset/count/constexpr.cc: Likewise.
2554         * testsuite/20_util/bitset/ext/constexpr.cc: Likewise.
2555         * testsuite/20_util/bitset/operations/constexpr_c++23.cc:
2556         Likewise.
2557         * testsuite/20_util/bitset/version.cc: Likewise.
2558         * testsuite/20_util/from_chars/8.cc: Likewise.
2559         * testsuite/20_util/from_chars/constexpr.cc: Likewise.
2560         * testsuite/20_util/function/cons/deduction_c++23.cc: Likewise.
2561         * testsuite/20_util/function_objects/invoke/4.cc: Likewise.
2562         * testsuite/20_util/function_objects/invoke/dangling_ref.cc:
2563         Likewise.
2564         * testsuite/20_util/is_scoped_enum/value.cc: Likewise.
2565         * testsuite/20_util/is_scoped_enum/version.cc: Likewise.
2566         * testsuite/20_util/move_only_function/call.cc: Likewise.
2567         * testsuite/20_util/move_only_function/cons.cc: Likewise.
2568         * testsuite/20_util/move_only_function/move.cc: Likewise.
2569         * testsuite/20_util/move_only_function/version.cc: Likewise.
2570         * testsuite/20_util/optional/monadic/and_then.cc: Likewise.
2571         * testsuite/20_util/optional/monadic/or_else.cc: Likewise.
2572         * testsuite/20_util/optional/monadic/or_else_neg.cc: Likewise.
2573         * testsuite/20_util/optional/monadic/pr109242.cc: Likewise.
2574         * testsuite/20_util/optional/monadic/transform.cc: Likewise.
2575         * testsuite/20_util/pair/p2321r2.cc: Likewise.
2576         * testsuite/20_util/reference_from_temporary/value.cc: Likewise.
2577         * testsuite/20_util/reference_from_temporary/value2.cc:
2578         Likewise.
2579         * testsuite/20_util/reference_from_temporary/version.cc:
2580         Likewise.
2581         * testsuite/20_util/to_chars/constexpr.cc: Likewise.
2582         * testsuite/20_util/to_chars/float128_c++23.cc: Likewise.
2583         * testsuite/20_util/to_chars/float16_c++23.cc: Likewise.
2584         * testsuite/20_util/to_chars/version.cc: Likewise.
2585         * testsuite/20_util/to_underlying/1.cc: Likewise.
2586         * testsuite/20_util/to_underlying/version.cc: Likewise.
2587         * testsuite/20_util/tuple/p2321r2.cc: Likewise.
2588         * testsuite/20_util/unique_ptr/assign/constexpr.cc: Likewise.
2589         * testsuite/20_util/unique_ptr/comparison/constexpr.cc:
2590         Likewise.
2591         * testsuite/20_util/unique_ptr/cons/constexpr_c++20.cc:
2592         Likewise.
2593         * testsuite/20_util/unique_ptr/creation/constexpr.cc: Likewise.
2594         * testsuite/20_util/unique_ptr/modifiers/constexpr.cc: Likewise.
2595         * testsuite/20_util/unique_ptr/specialized_algorithms/constexpr.cc: Likewise.
2596         * testsuite/20_util/unreachable/1.cc: Likewise.
2597         * testsuite/20_util/unreachable/version.cc: Likewise.
2598         * testsuite/20_util/uses_allocator/lwg3677.cc: Likewise.
2599         * testsuite/21_strings/basic_string/capacity/char/resize_and_overwrite.cc: Likewise.
2600         * testsuite/21_strings/basic_string/operations/contains/char.cc:
2601         Likewise.
2602         * testsuite/21_strings/basic_string/operations/contains/nonnull.cc: Likewise.
2603         * testsuite/21_strings/basic_string/operations/contains/wchar_t.cc: Likewise.
2604         * testsuite/21_strings/basic_string_view/cons/char/range_c++20.cc: Likewise.
2605         * testsuite/21_strings/basic_string_view/cons/wchar_t/range_c++20.cc: Likewise.
2606         * testsuite/21_strings/basic_string_view/operations/contains/char.cc: Likewise.
2607         * testsuite/21_strings/basic_string_view/operations/contains/char/2.cc: Likewise.
2608         * testsuite/21_strings/basic_string_view/operations/contains/nonnull.cc: Likewise.
2609         * testsuite/21_strings/basic_string_view/operations/contains/wchar_t.cc: Likewise.
2610         * testsuite/23_containers/queue/cons_from_iters.cc: Likewise.
2611         * testsuite/23_containers/stack/cons_from_iters.cc: Likewise.
2612         * testsuite/23_containers/vector/bool/element_access/1.cc:
2613         Likewise.
2614         * testsuite/24_iterators/const_iterator/1.cc: Likewise.
2615         * testsuite/25_algorithms/contains/1.cc: Likewise.
2616         * testsuite/25_algorithms/contains_subrange/1.cc: Likewise.
2617         * testsuite/25_algorithms/find_last/1.cc: Likewise.
2618         * testsuite/25_algorithms/find_last_if/1.cc: Likewise.
2619         * testsuite/25_algorithms/find_last_if_not/1.cc: Likewise.
2620         * testsuite/25_algorithms/fold_left/1.cc: Likewise.
2621         * testsuite/25_algorithms/fold_right/1.cc: Likewise.
2622         * testsuite/25_algorithms/iota/1.cc: Likewise.
2623         * testsuite/26_numerics/bit/bit.byteswap/byteswap.cc: Likewise.
2624         * testsuite/26_numerics/bit/bit.byteswap/version.cc: Likewise.
2625         * testsuite/26_numerics/complex/ext_c++23.cc: Likewise.
2626         * testsuite/26_numerics/headers/cmath/c99_classification_macros_c++23.cc: Likewise.
2627         * testsuite/26_numerics/headers/cmath/constexpr_std_c++23.cc:
2628         Likewise.
2629         * testsuite/26_numerics/headers/cmath/functions_std_c++23.cc:
2630         Likewise.
2631         * testsuite/26_numerics/headers/cmath/nextafter_c++23.cc:
2632         Likewise.
2633         * testsuite/26_numerics/numbers/4.cc: Likewise.
2634         * testsuite/27_io/basic_ostream/inserters_other/char/volatile_ptr.cc: Likewise.
2635         * testsuite/27_io/filesystem/path/native/conv_c++23.cc:
2636         Likewise.
2637         * testsuite/27_io/spanstream/1.cc: Likewise.
2638         * testsuite/27_io/spanstream/2.cc: Likewise.
2639         * testsuite/27_io/spanstream/version.cc: Likewise.
2640         * testsuite/29_atomics/atomic_float/requirements_cxx23.cc:
2641         Likewise.
2642         * testsuite/29_atomics/headers/stdatomic.h/c_compat.cc:
2643         Likewise.
2644         * testsuite/29_atomics/headers/stdatomic.h/version.cc: Likewise.
2645         * testsuite/30_threads/packaged_task/cons/deduction_c++23.cc:
2646         Likewise.
2647         * testsuite/experimental/filesystem/path/native/conv_c++23.cc:
2648         Likewise.
2649         * testsuite/std/ranges/adaptors/adjacent/1.cc: Likewise.
2650         * testsuite/std/ranges/adaptors/adjacent_transform/1.cc:
2651         Likewise.
2652         * testsuite/std/ranges/adaptors/as_const/1.cc: Likewise.
2653         * testsuite/std/ranges/adaptors/as_rvalue/1.cc: Likewise.
2654         * testsuite/std/ranges/adaptors/chunk/1.cc: Likewise.
2655         * testsuite/std/ranges/adaptors/chunk_by/1.cc: Likewise.
2656         * testsuite/std/ranges/adaptors/enumerate/1.cc: Likewise.
2657         * testsuite/std/ranges/adaptors/join_with/1.cc: Likewise.
2658         * testsuite/std/ranges/adaptors/lwg3715.cc: Likewise.
2659         * testsuite/std/ranges/adaptors/slide/1.cc: Likewise.
2660         * testsuite/std/ranges/adaptors/stride/1.cc: Likewise.
2661         * testsuite/std/ranges/cartesian_product/1.cc: Likewise.
2662         * testsuite/std/ranges/range_adaptor_closure.cc: Likewise.
2663         * testsuite/std/ranges/repeat/1.cc: Likewise.
2664         * testsuite/std/ranges/version_c++23.cc: Likewise.
2665         * testsuite/std/ranges/zip/1.cc: Likewise.
2666         * testsuite/std/ranges/zip_transform/1.cc: Likewise.
2667
2668 2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
2669
2670         * testsuite/20_util/expected/assign.cc: Remove dg-options.
2671         * testsuite/20_util/expected/bad.cc: Likewise.
2672         * testsuite/20_util/expected/cons.cc: Likewise.
2673         * testsuite/20_util/expected/equality.cc: Likewise.
2674         * testsuite/20_util/expected/illformed_neg.cc: Likewise.
2675         * testsuite/20_util/expected/lwg3877.cc: Likewise.
2676         * testsuite/20_util/expected/lwg3938.cc: Likewise.
2677         * testsuite/20_util/expected/monadic.cc: Likewise.
2678         * testsuite/20_util/expected/observers.cc: Likewise.
2679         * testsuite/20_util/expected/requirements.cc: Likewise.
2680         * testsuite/20_util/expected/swap.cc: Likewise.
2681         * testsuite/20_util/expected/synopsis.cc: Likewise.
2682         * testsuite/20_util/expected/unexpected.cc: Likewise.
2683         * testsuite/20_util/expected/version.cc: Likewise.
2684
2685 2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
2686
2687         * testsuite/20_util/duration/arithmetic/overflow_c++20.cc:
2688         Remove dg-options.
2689         * testsuite/20_util/duration/io.cc: Likewise.
2690         * testsuite/std/time/clock/file/io.cc: Likewise.
2691         * testsuite/std/time/clock/file/members.cc: Likewise.
2692         * testsuite/std/time/clock/file/overview.cc: Likewise.
2693         * testsuite/std/time/clock/gps/1.cc: Likewise.
2694         * testsuite/std/time/clock/gps/io.cc: Likewise.
2695         * testsuite/std/time/clock/local/io.cc: Likewise.
2696         * testsuite/std/time/clock/system/io.cc: Likewise.
2697         * testsuite/std/time/clock/tai/1.cc: Likewise.
2698         * testsuite/std/time/clock/tai/io.cc: Likewise.
2699         * testsuite/std/time/clock/utc/1.cc: Likewise.
2700         * testsuite/std/time/clock/utc/io.cc: Likewise.
2701         * testsuite/std/time/clock/utc/leap_second_info.cc: Likewise.
2702         * testsuite/std/time/day/1.cc: Likewise.
2703         * testsuite/std/time/day/io.cc: Likewise.
2704         * testsuite/std/time/exceptions.cc: Likewise.
2705         * testsuite/std/time/format.cc: Likewise.
2706         * testsuite/std/time/hh_mm_ss/1.cc: Likewise.
2707         * testsuite/std/time/hh_mm_ss/109772.cc: Likewise.
2708         * testsuite/std/time/hh_mm_ss/io.cc: Likewise.
2709         * testsuite/std/time/is_am/1.cc: Likewise.
2710         * testsuite/std/time/is_pm/1.cc: Likewise.
2711         * testsuite/std/time/make12/1.cc: Likewise.
2712         * testsuite/std/time/make24/1.cc: Likewise.
2713         * testsuite/std/time/month/1.cc: Likewise.
2714         * testsuite/std/time/month/io.cc: Likewise.
2715         * testsuite/std/time/month_day/1.cc: Likewise.
2716         * testsuite/std/time/month_day/io.cc: Likewise.
2717         * testsuite/std/time/month_day_last/1.cc: Likewise.
2718         * testsuite/std/time/month_day_last/io.cc: Likewise.
2719         * testsuite/std/time/month_weekday/1.cc: Likewise.
2720         * testsuite/std/time/month_weekday/io.cc: Likewise.
2721         * testsuite/std/time/month_weekday_last/1.cc: Likewise.
2722         * testsuite/std/time/month_weekday_last/io.cc: Likewise.
2723         * testsuite/std/time/parse.cc: Likewise.
2724         * testsuite/std/time/syn_c++20.cc: Likewise.
2725         * testsuite/std/time/time_zone/get_info_local.cc: Likewise.
2726         * testsuite/std/time/time_zone/get_info_sys.cc: Likewise.
2727         * testsuite/std/time/time_zone/requirements.cc: Likewise.
2728         * testsuite/std/time/traits/is_clock.cc: Likewise.
2729         * testsuite/std/time/tzdb/1.cc: Likewise.
2730         * testsuite/std/time/tzdb/leap_seconds.cc: Likewise.
2731         * testsuite/std/time/tzdb_list/1.cc: Likewise.
2732         * testsuite/std/time/tzdb_list/requirements.cc: Likewise.
2733         * testsuite/std/time/weekday/1.cc: Likewise.
2734         * testsuite/std/time/weekday/io.cc: Likewise.
2735         * testsuite/std/time/weekday_indexed/io.cc: Likewise.
2736         * testsuite/std/time/weekday_last/1.cc: Likewise.
2737         * testsuite/std/time/weekday_last/io.cc: Likewise.
2738         * testsuite/std/time/year/1.cc: Likewise.
2739         * testsuite/std/time/year/2.cc: Likewise.
2740         * testsuite/std/time/year/io.cc: Likewise.
2741         * testsuite/std/time/weekday_indexed/1.cc: Likewise.
2742         * testsuite/std/time/year_month/1.cc: Likewise.
2743         * testsuite/std/time/year_month/2.cc: Likewise.
2744         * testsuite/std/time/year_month/io.cc: Likewise.
2745         * testsuite/std/time/year_month_day/1.cc: Likewise.
2746         * testsuite/std/time/year_month_day/2.cc: Likewise.
2747         * testsuite/std/time/year_month_day/3.cc: Likewise.
2748         * testsuite/std/time/year_month_day/4.cc: Likewise.
2749         * testsuite/std/time/year_month_day/io.cc: Likewise.
2750         * testsuite/std/time/year_month_day_last/1.cc: Likewise.
2751         * testsuite/std/time/year_month_day_last/2.cc: Likewise.
2752         * testsuite/std/time/year_month_day_last/io.cc: Likewise.
2753         * testsuite/std/time/year_month_weekday/1.cc: Likewise.
2754         * testsuite/std/time/year_month_weekday/2.cc: Likewise.
2755         * testsuite/std/time/year_month_weekday/3.cc: Likewise.
2756         * testsuite/std/time/year_month_weekday/io.cc: Likewise.
2757         * testsuite/std/time/year_month_weekday_last/1.cc: Likewise.
2758         * testsuite/std/time/year_month_weekday_last/2.cc: Likewise.
2759         * testsuite/std/time/year_month_weekday_last/io.cc: Likewise.
2760         * testsuite/std/time/zoned_time/1.cc: Likewise.
2761         * testsuite/std/time/zoned_time/custom.cc: Likewise.
2762         * testsuite/std/time/zoned_time/deduction.cc: Likewise.
2763         * testsuite/std/time/zoned_time/io.cc: Likewise.
2764         * testsuite/std/time/zoned_time/req_neg.cc: Likewise.
2765         * testsuite/std/time/zoned_time/requirements.cc: Likewise.
2766         * testsuite/std/time/zoned_traits.cc: Likewise.
2767
2768 2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
2769
2770         * testsuite/std/format/arguments/args.cc: Remove dg-options.
2771         * testsuite/std/format/arguments/lwg3810.cc: Likewise.
2772         * testsuite/std/format/error.cc: Likewise.
2773         * testsuite/std/format/format_string.cc: Likewise.
2774         * testsuite/std/format/formatter/concept.cc: Likewise.
2775         * testsuite/std/format/formatter/ext_float.cc: Likewise.
2776         * testsuite/std/format/formatter/requirements.cc: Likewise.
2777         * testsuite/std/format/functions/107871.cc: Likewise.
2778         * testsuite/std/format/functions/format.cc: Likewise.
2779         * testsuite/std/format/functions/format_to.cc: Likewise.
2780         * testsuite/std/format/functions/format_to_n.cc: Likewise.
2781         * testsuite/std/format/functions/size.cc: Likewise.
2782         * testsuite/std/format/functions/vformat_to.cc: Likewise.
2783         * testsuite/std/format/parse_ctx.cc: Likewise.
2784         * testsuite/std/format/string.cc: Likewise.
2785         * testsuite/std/format/string_neg.cc: Likewise.
2786         * testsuite/std/format/functions/format_c++23.cc: Removed.
2787
2788 2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
2789
2790         * testsuite/20_util/function_objects/range.cmp/equal_to.cc:
2791         Remove dg-options.
2792         * testsuite/20_util/function_objects/range.cmp/greater.cc:
2793         Likewise.
2794         * testsuite/20_util/function_objects/range.cmp/greater_equal.cc:
2795         Likewise.
2796         * testsuite/20_util/function_objects/range.cmp/less.cc:
2797         Likewise.
2798         * testsuite/20_util/function_objects/range.cmp/less_equal.cc:
2799         Likewise.
2800         * testsuite/20_util/function_objects/range.cmp/lwg3530.cc:
2801         Likewise.
2802         * testsuite/20_util/function_objects/range.cmp/not_equal_to.cc:
2803         Likewise.
2804         * testsuite/20_util/specialized_algorithms/construct_at/1.cc:
2805         Likewise.
2806         * testsuite/20_util/specialized_algorithms/construct_at/92878_92947.cc:
2807         Likewise.
2808         * testsuite/20_util/specialized_algorithms/construct_at/95788.cc:
2809         Likewise.
2810         * testsuite/20_util/specialized_algorithms/destroy/constrained.cc:
2811         Likewise.
2812         * testsuite/20_util/specialized_algorithms/uninitialized_copy/constrained.cc:
2813         Likewise.
2814         * testsuite/20_util/specialized_algorithms/uninitialized_default_construct/constrained.cc:
2815         Likewise.
2816         * testsuite/20_util/specialized_algorithms/uninitialized_fill/94017.cc:
2817         Likewise.
2818         * testsuite/20_util/specialized_algorithms/uninitialized_fill/constrained.cc:
2819         Likewise.
2820         * testsuite/20_util/specialized_algorithms/uninitialized_fill_n/94017.cc:
2821         Likewise.
2822         * testsuite/20_util/specialized_algorithms/uninitialized_move/constrained.cc:
2823         Likewise.
2824         * testsuite/20_util/specialized_algorithms/uninitialized_value_construct/constrained.cc:
2825         Likewise.
2826         * testsuite/25_algorithms/adjacent_find/constexpr.cc: Likewise.
2827         * testsuite/25_algorithms/adjacent_find/constrained.cc:
2828         Likewise.
2829         * testsuite/25_algorithms/all_of/constexpr.cc: Likewise.
2830         * testsuite/25_algorithms/all_of/constrained.cc: Likewise.
2831         * testsuite/25_algorithms/any_of/constexpr.cc: Likewise.
2832         * testsuite/25_algorithms/any_of/constrained.cc: Likewise.
2833         * testsuite/25_algorithms/binary_search/constexpr.cc: Likewise.
2834         * testsuite/25_algorithms/binary_search/constrained.cc:
2835         Likewise.
2836         * testsuite/25_algorithms/clamp/constrained.cc: Likewise.
2837         * testsuite/25_algorithms/constexpr_macro.cc: Likewise.
2838         * testsuite/25_algorithms/copy/95578.cc: Likewise.
2839         * testsuite/25_algorithms/copy/constexpr.cc: Likewise.
2840         * testsuite/25_algorithms/copy/constrained.cc: Likewise.
2841         * testsuite/25_algorithms/copy/debug/constexpr_neg.cc: Likewise.
2842         * testsuite/25_algorithms/copy_backward/95578.cc: Likewise.
2843         * testsuite/25_algorithms/copy_backward/constexpr.cc: Likewise.
2844         * testsuite/25_algorithms/copy_backward/constrained.cc:
2845         Likewise.
2846         * testsuite/25_algorithms/copy_backward/debug/constexpr_neg.cc:
2847         Likewise.
2848         * testsuite/25_algorithms/copy_if/constexpr.cc: Likewise.
2849         * testsuite/25_algorithms/copy_if/constrained.cc: Likewise.
2850         * testsuite/25_algorithms/copy_n/constexpr.cc: Likewise.
2851         * testsuite/25_algorithms/copy_n/constrained.cc: Likewise.
2852         * testsuite/25_algorithms/count/constexpr.cc: Likewise.
2853         * testsuite/25_algorithms/count/constrained.cc: Likewise.
2854         * testsuite/25_algorithms/count_if/constexpr.cc: Likewise.
2855         * testsuite/25_algorithms/count_if/constrained.cc: Likewise.
2856         * testsuite/25_algorithms/cpp_lib_constexpr.cc: Likewise.
2857         * testsuite/25_algorithms/equal/95578.cc: Likewise.
2858         * testsuite/25_algorithms/equal/constexpr.cc: Likewise.
2859         * testsuite/25_algorithms/equal/constexpr_neg.cc: Likewise.
2860         * testsuite/25_algorithms/equal/constrained.cc: Likewise.
2861         * testsuite/25_algorithms/equal/debug/constexpr_neg.cc:
2862         Likewise.
2863         * testsuite/25_algorithms/equal_range/constexpr.cc: Likewise.
2864         * testsuite/25_algorithms/equal_range/constrained.cc: Likewise.
2865         * testsuite/25_algorithms/fill/94017.cc: Likewise.
2866         * testsuite/25_algorithms/fill/constexpr.cc: Likewise.
2867         * testsuite/25_algorithms/fill/constrained.cc: Likewise.
2868         * testsuite/25_algorithms/fill_n/94017.cc: Likewise.
2869         * testsuite/25_algorithms/fill_n/constexpr.cc: Likewise.
2870         * testsuite/25_algorithms/fill_n/constrained.cc: Likewise.
2871         * testsuite/25_algorithms/find/constexpr.cc: Likewise.
2872         * testsuite/25_algorithms/find/constrained.cc: Likewise.
2873         * testsuite/25_algorithms/find_end/constexpr.cc: Likewise.
2874         * testsuite/25_algorithms/find_end/constrained.cc: Likewise.
2875         * testsuite/25_algorithms/find_first_of/constexpr.cc: Likewise.
2876         * testsuite/25_algorithms/find_first_of/constrained.cc:
2877         Likewise.
2878         * testsuite/25_algorithms/find_if/constexpr.cc: Likewise.
2879         * testsuite/25_algorithms/find_if/constrained.cc: Likewise.
2880         * testsuite/25_algorithms/find_if_not/constexpr.cc: Likewise.
2881         * testsuite/25_algorithms/find_if_not/constrained.cc: Likewise.
2882         * testsuite/25_algorithms/for_each/constexpr.cc: Likewise.
2883         * testsuite/25_algorithms/for_each/constrained.cc: Likewise.
2884         * testsuite/25_algorithms/generate/constexpr.cc: Likewise.
2885         * testsuite/25_algorithms/generate/constrained.cc: Likewise.
2886         * testsuite/25_algorithms/generate_n/constexpr.cc: Likewise.
2887         * testsuite/25_algorithms/generate_n/constrained.cc: Likewise.
2888         * testsuite/25_algorithms/heap/constrained.cc: Likewise.
2889         * testsuite/25_algorithms/includes/constrained.cc: Likewise.
2890         * testsuite/25_algorithms/inplace_merge/constrained.cc:
2891         Likewise.
2892         * testsuite/25_algorithms/is_heap/constexpr.cc: Likewise.
2893         * testsuite/25_algorithms/is_heap_until/constexpr.cc: Likewise.
2894         * testsuite/25_algorithms/is_partitioned/constexpr.cc: Likewise.
2895         * testsuite/25_algorithms/is_partitioned/constrained.cc:
2896         Likewise.
2897         * testsuite/25_algorithms/is_permutation/constexpr.cc: Likewise.
2898         * testsuite/25_algorithms/is_permutation/constrained.cc:
2899         Likewise.
2900         * testsuite/25_algorithms/is_sorted/constexpr.cc: Likewise.
2901         * testsuite/25_algorithms/is_sorted/constrained.cc: Likewise.
2902         * testsuite/25_algorithms/is_sorted_until/constexpr.cc:
2903         Likewise.
2904         * testsuite/25_algorithms/is_sorted_until/constrained.cc:
2905         Likewise.
2906         * testsuite/25_algorithms/iter_swap/constexpr.cc: Likewise.
2907         * testsuite/25_algorithms/lexicographical_compare/93972.cc:
2908         Likewise.
2909         * testsuite/25_algorithms/lexicographical_compare/95578.cc:
2910         Likewise.
2911         * testsuite/25_algorithms/lexicographical_compare/constexpr.cc:
2912         Likewise.
2913         * testsuite/25_algorithms/lexicographical_compare/constrained.cc:
2914         Likewise.
2915         * testsuite/25_algorithms/lexicographical_compare_three_way/1.cc:
2916         Likewise.
2917         * testsuite/25_algorithms/lexicographical_compare_three_way/constexpr.cc:
2918         Likewise.
2919         * testsuite/25_algorithms/lower_bound/constexpr.cc: Likewise.
2920         * testsuite/25_algorithms/lower_bound/constrained.cc: Likewise.
2921         * testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_neg.cc:
2922         Likewise.
2923         * testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_pred_neg.cc:
2924         Likewise.
2925         * testsuite/25_algorithms/lower_bound/debug/constexpr_valid_range_neg.cc:
2926         Likewise.
2927         * testsuite/25_algorithms/make_heap/constexpr.cc: Likewise.
2928         * testsuite/25_algorithms/max/constrained.cc: Likewise.
2929         * testsuite/25_algorithms/max_element/constrained.cc: Likewise.
2930         * testsuite/25_algorithms/merge/constexpr.cc: Likewise.
2931         * testsuite/25_algorithms/merge/constrained.cc: Likewise.
2932         * testsuite/25_algorithms/min/constrained.cc: Likewise.
2933         * testsuite/25_algorithms/min_element/constrained.cc: Likewise.
2934         * testsuite/25_algorithms/minmax/constrained.cc: Likewise.
2935         * testsuite/25_algorithms/minmax_element/constrained.cc:
2936         Likewise.
2937         * testsuite/25_algorithms/mismatch/constexpr.cc: Likewise.
2938         * testsuite/25_algorithms/mismatch/constrained.cc: Likewise.
2939         * testsuite/25_algorithms/move/93872.cc: Likewise.
2940         * testsuite/25_algorithms/move/95578.cc: Likewise.
2941         * testsuite/25_algorithms/move/constexpr.cc: Likewise.
2942         * testsuite/25_algorithms/move/constrained.cc: Likewise.
2943         * testsuite/25_algorithms/move_backward/93872.cc: Likewise.
2944         * testsuite/25_algorithms/move_backward/95578.cc: Likewise.
2945         * testsuite/25_algorithms/move_backward/constrained.cc:
2946         Likewise.
2947         * testsuite/25_algorithms/next_permutation/constexpr.cc:
2948         Likewise.
2949         * testsuite/25_algorithms/next_permutation/constrained.cc:
2950         Likewise.
2951         * testsuite/25_algorithms/none_of/constexpr.cc: Likewise.
2952         * testsuite/25_algorithms/none_of/constrained.cc: Likewise.
2953         * testsuite/25_algorithms/nth_element/constexpr.cc: Likewise.
2954         * testsuite/25_algorithms/nth_element/constrained.cc: Likewise.
2955         * testsuite/25_algorithms/partial_sort/constexpr.cc: Likewise.
2956         * testsuite/25_algorithms/partial_sort/constrained.cc: Likewise.
2957         * testsuite/25_algorithms/partial_sort_copy/constexpr.cc:
2958         Likewise.
2959         * testsuite/25_algorithms/partial_sort_copy/constrained.cc:
2960         Likewise.
2961         * testsuite/25_algorithms/partition/constexpr.cc: Likewise.
2962         * testsuite/25_algorithms/partition/constrained.cc: Likewise.
2963         * testsuite/25_algorithms/partition_copy/constexpr.cc: Likewise.
2964         * testsuite/25_algorithms/partition_copy/constrained.cc:
2965         Likewise.
2966         * testsuite/25_algorithms/partition_point/constexpr.cc:
2967         Likewise.
2968         * testsuite/25_algorithms/partition_point/constrained.cc:
2969         Likewise.
2970         * testsuite/25_algorithms/pop_heap/constexpr.cc: Likewise.
2971         * testsuite/25_algorithms/prev_permutation/constexpr.cc:
2972         Likewise.
2973         * testsuite/25_algorithms/prev_permutation/constrained.cc:
2974         Likewise.
2975         * testsuite/25_algorithms/push_heap/constexpr.cc: Likewise.
2976         * testsuite/25_algorithms/remove/constexpr.cc: Likewise.
2977         * testsuite/25_algorithms/remove/constrained.cc: Likewise.
2978         * testsuite/25_algorithms/remove_copy/constexpr.cc: Likewise.
2979         * testsuite/25_algorithms/remove_copy/constrained.cc: Likewise.
2980         * testsuite/25_algorithms/remove_copy_if/constexpr.cc: Likewise.
2981         * testsuite/25_algorithms/remove_copy_if/constrained.cc:
2982         Likewise.
2983         * testsuite/25_algorithms/remove_if/constexpr.cc: Likewise.
2984         * testsuite/25_algorithms/remove_if/constrained.cc: Likewise.
2985         * testsuite/25_algorithms/replace/constrained.cc: Likewise.
2986         * testsuite/25_algorithms/replace_copy/constexpr.cc: Likewise.
2987         * testsuite/25_algorithms/replace_copy/constrained.cc: Likewise.
2988         * testsuite/25_algorithms/replace_copy_if/constexpr.cc:
2989         Likewise.
2990         * testsuite/25_algorithms/replace_copy_if/constrained.cc:
2991         Likewise.
2992         * testsuite/25_algorithms/replace_if/constexpr.cc: Likewise.
2993         * testsuite/25_algorithms/replace_if/constrained.cc: Likewise.
2994         * testsuite/25_algorithms/reverse/constexpr.cc: Likewise.
2995         * testsuite/25_algorithms/reverse/constrained.cc: Likewise.
2996         * testsuite/25_algorithms/reverse_copy/constexpr.cc: Likewise.
2997         * testsuite/25_algorithms/reverse_copy/constrained.cc: Likewise.
2998         * testsuite/25_algorithms/rotate/constexpr.cc: Likewise.
2999         * testsuite/25_algorithms/rotate/constrained.cc: Likewise.
3000         * testsuite/25_algorithms/rotate_copy/constexpr.cc: Likewise.
3001         * testsuite/25_algorithms/rotate_copy/constrained.cc: Likewise.
3002         * testsuite/25_algorithms/sample/constrained.cc: Likewise.
3003         * testsuite/25_algorithms/search/constexpr.cc: Likewise.
3004         * testsuite/25_algorithms/search/constrained.cc: Likewise.
3005         * testsuite/25_algorithms/search_n/97828.cc: Likewise.
3006         * testsuite/25_algorithms/search_n/constexpr.cc: Likewise.
3007         * testsuite/25_algorithms/search_n/constrained.cc: Likewise.
3008         * testsuite/25_algorithms/set_difference/constexpr.cc: Likewise.
3009         * testsuite/25_algorithms/set_difference/constrained.cc:
3010         Likewise.
3011         * testsuite/25_algorithms/set_intersection/constexpr.cc:
3012         Likewise.
3013         * testsuite/25_algorithms/set_intersection/constrained.cc:
3014         Likewise.
3015         * testsuite/25_algorithms/set_symmetric_difference/constexpr.cc:
3016         Likewise.
3017         * testsuite/25_algorithms/set_symmetric_difference/constrained.cc:
3018         Likewise.
3019         * testsuite/25_algorithms/set_union/constexpr.cc: Likewise.
3020         * testsuite/25_algorithms/set_union/constrained.cc: Likewise.
3021         * testsuite/25_algorithms/shift_left/1.cc: Likewise.
3022         * testsuite/25_algorithms/shift_right/1.cc: Likewise.
3023         * testsuite/25_algorithms/shuffle/constrained.cc: Likewise.
3024         * testsuite/25_algorithms/sort/constexpr.cc: Likewise.
3025         * testsuite/25_algorithms/sort/constrained.cc: Likewise.
3026         * testsuite/25_algorithms/sort_heap/constexpr.cc: Likewise.
3027         * testsuite/25_algorithms/stable_partition/constrained.cc:
3028         Likewise.
3029         * testsuite/25_algorithms/stable_sort/constrained.cc: Likewise.
3030         * testsuite/25_algorithms/swap/constexpr.cc: Likewise.
3031         * testsuite/25_algorithms/swap_ranges/constexpr.cc: Likewise.
3032         * testsuite/25_algorithms/swap_ranges/constrained.cc: Likewise.
3033         * testsuite/25_algorithms/transform/constexpr.cc: Likewise.
3034         * testsuite/25_algorithms/transform/constrained.cc: Likewise.
3035         * testsuite/25_algorithms/unique/constexpr.cc: Likewise.
3036         * testsuite/25_algorithms/unique/constrained.cc: Likewise.
3037         * testsuite/25_algorithms/unique_copy/constexpr.cc: Likewise.
3038         * testsuite/25_algorithms/unique_copy/constrained.cc: Likewise.
3039         * testsuite/25_algorithms/upper_bound/constexpr.cc: Likewise.
3040         * testsuite/25_algorithms/upper_bound/constrained.cc: Likewise.
3041         * testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_neg.cc:
3042         Likewise.
3043         * testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_pred_neg.cc:
3044         Likewise.
3045         * testsuite/25_algorithms/upper_bound/debug/constexpr_valid_range_neg.cc:
3046         Likewise.
3047
3048 2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
3049
3050         * testsuite/std/concepts/1.cc: Remove dg-options.
3051         * testsuite/std/concepts/2.cc: Likewise.
3052         * testsuite/std/concepts/concepts.callable/invocable.cc:
3053         Likewise.
3054         * testsuite/std/concepts/concepts.callable/regular_invocable.cc:
3055         Likewise.
3056         * testsuite/std/concepts/concepts.callable/relation.cc:
3057         Likewise.
3058         * testsuite/std/concepts/concepts.callable/strictweakorder.cc:
3059         Likewise.
3060         * testsuite/std/concepts/concepts.lang/concept.arithmetic/floating_point.cc: Likewise.
3061         * testsuite/std/concepts/concepts.lang/concept.arithmetic/integral.cc: Likewise.
3062         * testsuite/std/concepts/concepts.lang/concept.arithmetic/signed_integral.cc: Likewise.
3063         * testsuite/std/concepts/concepts.lang/concept.arithmetic/unsigned_integral.cc: Likewise.
3064         * testsuite/std/concepts/concepts.lang/concept.assignable/1.cc:
3065         Likewise.
3066         * testsuite/std/concepts/concepts.lang/concept.common/1.cc:
3067         Likewise.
3068         * testsuite/std/concepts/concepts.lang/concept.commonref/1.cc:
3069         Likewise.
3070         * testsuite/std/concepts/concepts.lang/concept.constructible/1.cc: Likewise.
3071         * testsuite/std/concepts/concepts.lang/concept.convertible/1.cc:
3072         Likewise.
3073         * testsuite/std/concepts/concepts.lang/concept.copyconstructible/1.cc: Likewise.
3074         * testsuite/std/concepts/concepts.lang/concept.defaultinitializable/1.cc: Likewise.
3075         * testsuite/std/concepts/concepts.lang/concept.defaultinitializable/lwg3149.cc: Likewise.
3076         * testsuite/std/concepts/concepts.lang/concept.derived/1.cc:
3077         Likewise.
3078         * testsuite/std/concepts/concepts.lang/concept.destructible/1.cc: Likewise.
3079         * testsuite/std/concepts/concepts.lang/concept.moveconstructible/1.cc: Likewise.
3080         * testsuite/std/concepts/concepts.lang/concept.same/1.cc:
3081         Likewise.
3082         * testsuite/std/concepts/concepts.lang/concept.swappable/swap.cc: Likewise.
3083         * testsuite/std/concepts/concepts.lang/concept.swappable/swappable.cc: Likewise.
3084         * testsuite/std/concepts/concepts.lang/concept.swappable/swappable_with.cc: Likewise.
3085         * testsuite/std/concepts/concepts.object/copyable.cc: Likewise.
3086         * testsuite/std/concepts/concepts.object/movable.cc: Likewise.
3087         * testsuite/std/concepts/concepts.object/regular.cc: Likewise.
3088         * testsuite/std/concepts/concepts.object/semiregular.cc:
3089         Likewise.
3090         * testsuite/std/ranges/97600.cc: Likewise.
3091         * testsuite/std/ranges/access/101782.cc: Likewise.
3092         * testsuite/std/ranges/access/begin.cc: Likewise.
3093         * testsuite/std/ranges/access/begin_neg.cc: Likewise.
3094         * testsuite/std/ranges/access/cbegin.cc: Likewise.
3095         * testsuite/std/ranges/access/cdata.cc: Likewise.
3096         * testsuite/std/ranges/access/cend.cc: Likewise.
3097         * testsuite/std/ranges/access/crbegin.cc: Likewise.
3098         * testsuite/std/ranges/access/crend.cc: Likewise.
3099         * testsuite/std/ranges/access/data.cc: Likewise.
3100         * testsuite/std/ranges/access/empty.cc: Likewise.
3101         * testsuite/std/ranges/access/end.cc: Likewise.
3102         * testsuite/std/ranges/access/end_neg.cc: Likewise.
3103         * testsuite/std/ranges/access/lwg3467.cc: Likewise.
3104         * testsuite/std/ranges/access/p2602.cc: Likewise.
3105         * testsuite/std/ranges/access/rbegin.cc: Likewise.
3106         * testsuite/std/ranges/access/rend.cc: Likewise.
3107         * testsuite/std/ranges/access/size.cc: Likewise.
3108         * testsuite/std/ranges/access/size_neg.cc: Likewise.
3109         * testsuite/std/ranges/access/ssize.cc: Likewise.
3110         * testsuite/std/ranges/adaptors/100479.cc: Likewise.
3111         * testsuite/std/ranges/adaptors/100577.cc: Likewise.
3112         * testsuite/std/ranges/adaptors/93978.cc: Likewise.
3113         * testsuite/std/ranges/adaptors/95322.cc: Likewise.
3114         * testsuite/std/ranges/adaptors/99433.cc: Likewise.
3115         * testsuite/std/ranges/adaptors/all.cc: Likewise.
3116         * testsuite/std/ranges/adaptors/common.cc: Likewise.
3117         * testsuite/std/ranges/adaptors/conditionally_borrowed.cc:
3118         Likewise.
3119         * testsuite/std/ranges/adaptors/counted.cc: Likewise.
3120         * testsuite/std/ranges/adaptors/detail/copyable_box.cc:
3121         Likewise.
3122         * testsuite/std/ranges/adaptors/drop.cc: Likewise.
3123         * testsuite/std/ranges/adaptors/drop_while.cc: Likewise.
3124         * testsuite/std/ranges/adaptors/elements.cc: Likewise.
3125         * testsuite/std/ranges/adaptors/filter.cc: Likewise.
3126         * testsuite/std/ranges/adaptors/join.cc: Likewise.
3127         * testsuite/std/ranges/adaptors/lazy_split.cc: Likewise.
3128         * testsuite/std/ranges/adaptors/lazy_split_neg.cc: Likewise.
3129         * testsuite/std/ranges/adaptors/lwg3286.cc: Likewise.
3130         * testsuite/std/ranges/adaptors/lwg3313_neg.cc: Likewise.
3131         * testsuite/std/ranges/adaptors/lwg3325_neg.cc: Likewise.
3132         * testsuite/std/ranges/adaptors/lwg3406.cc: Likewise.
3133         * testsuite/std/ranges/adaptors/p1739.cc: Likewise.
3134         * testsuite/std/ranges/adaptors/p2281.cc: Likewise.
3135         * testsuite/std/ranges/adaptors/p2770r0.cc: Likewise.
3136         * testsuite/std/ranges/adaptors/reverse.cc: Likewise.
3137         * testsuite/std/ranges/adaptors/sizeof.cc: Likewise.
3138         * testsuite/std/ranges/adaptors/split.cc: Likewise.
3139         * testsuite/std/ranges/adaptors/take.cc: Likewise.
3140         * testsuite/std/ranges/adaptors/take_while.cc: Likewise.
3141         * testsuite/std/ranges/adaptors/transform.cc: Likewise.
3142         * testsuite/std/ranges/empty_view.cc: Likewise.
3143         * testsuite/std/ranges/headers/ranges/synopsis.cc: Likewise.
3144         * testsuite/std/ranges/iota/difference_type.cc: Likewise.
3145         * testsuite/std/ranges/iota/iota_view.cc: Likewise.
3146         * testsuite/std/ranges/iota/iterator.cc: Likewise.
3147         * testsuite/std/ranges/iota/lwg3292_neg.cc: Likewise.
3148         * testsuite/std/ranges/iota/max_size_type.cc: Likewise.
3149         * testsuite/std/ranges/istream_view.cc: Likewise.
3150         * testsuite/std/ranges/p2259.cc: Likewise.
3151         * testsuite/std/ranges/p2325.cc: Likewise.
3152         * testsuite/std/ranges/p2367.cc: Likewise.
3153         * testsuite/std/ranges/range.cc: Likewise.
3154         * testsuite/std/ranges/refinements.cc: Likewise.
3155         * testsuite/std/ranges/safe_range.cc: Likewise.
3156         * testsuite/std/ranges/safe_range_types.cc: Likewise.
3157         * testsuite/std/ranges/single_view.cc: Likewise.
3158         * testsuite/std/ranges/sized.cc: Likewise.
3159         * testsuite/std/ranges/subrange/1.cc: Likewise.
3160         * testsuite/std/ranges/subrange/97512.cc: Likewise.
3161         * testsuite/std/ranges/subrange/constexpr.cc: Likewise.
3162         * testsuite/std/ranges/subrange/lwg3282_neg.cc: Likewise.
3163         * testsuite/std/ranges/subrange/lwg3286.cc: Likewise.
3164         * testsuite/std/ranges/subrange/lwg3433.cc: Likewise.
3165         * testsuite/std/ranges/subrange/sizeof.cc: Likewise.
3166         * testsuite/std/ranges/subrange/tuple_like.cc: Likewise.
3167         * testsuite/std/ranges/view.cc: Likewise.
3168
3169 2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
3170
3171         * testsuite/21_strings/headers/cuchar/functions_std_cxx20.cc:
3172         Remove dg-options.
3173         * testsuite/23_containers/span/contiguous_range_neg.cc:
3174         Likewise.
3175         * testsuite/23_containers/span/everything.cc: Likewise.
3176
3177 2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
3178
3179         * testsuite/24_iterators/reverse_iterator/100639.cc: Remove
3180         dg-options and add dg-add-options strict_std.
3181         * testsuite/std/ranges/iota/93267.cc: Likewise.
3182         * testsuite/std/ranges/iota/96042.cc: Likewise.
3183         * testsuite/std/ranges/iota/size.cc: Likewise.
3184         * testsuite/std/ranges/subrange/96042.cc: Likewise.
3185
3186 2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
3187
3188         * testsuite/tr1/5_numerical_facilities/special_functions/07_conf_hyperg/compile_cxx17.cc:
3189         Replace dg-options -std=c++17 with dg-add-options strict_std.
3190         * testsuite/tr1/5_numerical_facilities/special_functions/17_hyperg/compile_cxx17.cc:
3191         Likewise.
3192
3193 2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
3194
3195         * testsuite/23_containers/deque/48101-2_neg.cc: Replace
3196         dg-options with target selector.
3197         * testsuite/23_containers/forward_list/48101-2_neg.cc: Likewise.
3198         * testsuite/23_containers/list/48101-2_neg.cc: Likewise.
3199         * testsuite/23_containers/map/48101-2_neg.cc: Likewise.
3200         * testsuite/23_containers/map/48101_neg.cc: Likewise.
3201         * testsuite/23_containers/multimap/48101-2_neg.cc: Likewise.
3202         * testsuite/23_containers/multimap/48101_neg.cc: Likewise.
3203         * testsuite/23_containers/multiset/48101-2_neg.cc: Likewise.
3204         * testsuite/23_containers/set/48101-2_neg.cc: Likewise.
3205         * testsuite/23_containers/unordered_map/48101-2_neg.cc:
3206         Likewise.
3207         * testsuite/23_containers/unordered_multimap/48101-2_neg.cc:
3208         Likewise.
3209         * testsuite/23_containers/unordered_multiset/48101-2_neg.cc:
3210         Likewise.
3211         * testsuite/23_containers/unordered_set/48101-2_neg.cc:
3212         Likewise.
3213         * testsuite/23_containers/vector/48101-2_neg.cc: Likewise.
3214
3215 2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
3216
3217         * doc/xml/manual/test.xml: Update documentation on running and
3218         writing tests.
3219         * doc/html/manual/test.html: Regenerate.
3220         * testsuite/Makefile.am: Add v3-use-std-list to site.tmp
3221         * testsuite/Makefile.in: Regenerate.
3222         * testsuite/lib/dg-options.exp (add_options_for_strict_std): New
3223         proc.
3224         * testsuite/lib/libstdc++.exp (search_for): New utility proc.
3225         (v3-dg-runtest): New proc to replace dg-runtest.
3226         * testsuite/libstdc++-dg/conformance.exp: Use v3-dg-runtest.
3227
3228 2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
3229
3230         * testsuite/29_atomics/headers/atomic/types_std_c++2a_neg.cc:
3231         Fix test to work for C++23 and C++26 too.
3232
3233 2023-09-15  Patrick Palka  <ppalka@redhat.com>
3234
3235         * include/std/bit: Include <concepts>.
3236         (byteswap): Use a type-constraint instead of enable_if_t
3237         inside the return type, and use std::integral.
3238         (_If_is_unsigned_integer): Replace with ...
3239         (__unsigned_integer): ... this.
3240         (rotl): Use a type-constraint instead of enable_if_t inside
3241         the return type.
3242         (countl_zero): Likewise.
3243         (countl_one): Likewise.
3244         (countr_zero): Likewise.
3245         (countr_one): Likewise.
3246         (popcount): Likewise.
3247         (has_single_bit): Likewise.
3248         (bit_ceil): Likewise.
3249         (bit_floor): Likewise.
3250         (bit_width): Likewise.
3251
3252 2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
3253
3254         * include/std/variant (variant): Remove derivation from
3255         _Enable_default_constructor base class.
3256         (variant::variant()): Constrain.
3257         * testsuite/20_util/variant/default_ctor.cc: New test.
3258
3259 2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
3260
3261         PR libstdc++/111172
3262         * include/std/variant (get<T>): Remove !is_void static
3263         assertions.
3264
3265 2023-09-15  Jonathan Wakely  <jwakely@redhat.com>
3266
3267         * include/bits/version.def (to_chars): Define new value for
3268         C++26.
3269         * include/bits/version.h: Regenerate.
3270         * include/std/charconv (to_chars_result::operator bool): New
3271         function.
3272         (from_chars_result::operator bool): New function.
3273         * testsuite/20_util/to_chars/version.cc: Update expected value.
3274         * testsuite/20_util/from_chars/result.cc: New test.
3275         * testsuite/20_util/to_chars/result.cc: New test.
3276
3277 2023-09-14  Jonathan Wakely  <jwakely@redhat.com>
3278
3279         PR c++/111357
3280         * testsuite/20_util/integer_sequence/pr111357.cc: New test.
3281
3282 2023-09-14  Jonathan Wakely  <jwakely@redhat.com>
3283
3284         * testsuite/27_io/basic_filebuf/seekoff/char/1-io.cc: Use
3285         dg-additional-files. Remove @require@ and @diff@ comments.
3286         * testsuite/27_io/basic_filebuf/seekoff/char/2-io.cc: Likewise.
3287         * testsuite/27_io/basic_filebuf/seekpos/char/1-io.cc: Likewise.
3288         * testsuite/27_io/basic_filebuf/seekpos/char/2-io.cc: Likewise.
3289         * testsuite/lib/dg-options.exp (v3_additional_files): New
3290         global variable.
3291         (dg-additional-files): New proc.
3292         * testsuite/lib/libstdc++.exp (v3_target_compile): Copy
3293         additional files to test directory.
3294
3295 2023-09-14  Jonathan Wakely  <jwakely@redhat.com>
3296
3297         * include/experimental/io_context (io_context) [!_GLIBCXX_HAS_GTHREADS]:
3298         Use a plain integer for _M_work_count for single-threaded
3299         targets.
3300         * include/experimental/memory_resource (__get_default_resource)
3301         [!_GLIBCXX_HAS_GTHREADS]: Use unsynchronized type for
3302         single-threaded targets.
3303         * src/c++17/default_resource.h: Adjust preprocessor conditions
3304         to match memory_resource.cc.
3305         * src/c++17/memory_resource.cc [!_GLIBCXX_HAS_GTHREADS]
3306         (atomic_mem_res): Use unsynchronized type for single-threaded
3307         targets.
3308
3309 2023-09-14  Christophe Lyon  <christophe.lyon@linaro.org>
3310
3311         * testsuite/29_atomics/atomic/compare_exchange_padding.cc: Likewise.
3312         * testsuite/29_atomics/atomic/cons/value_init.cc: Likewise.
3313         * testsuite/29_atomics/atomic_float/value_init.cc: Likewise.
3314         * testsuite/29_atomics/atomic_integral/cons/value_init.cc: Likewise.
3315         * testsuite/29_atomics/atomic_ref/compare_exchange_padding.cc: Likewise.
3316         * testsuite/29_atomics/atomic_ref/generic.cc: Likewise.
3317         * testsuite/29_atomics/atomic_ref/integral.cc: Likewise.
3318         * testsuite/29_atomics/atomic_ref/pointer.cc: Likewise.
3319
3320 2023-09-14  François Dumont  <fdumont@gcc.gnu.org>
3321
3322         * testsuite/19_diagnostics/stacktrace/synopsis.cc: Add
3323         { dg-require-normal-namespace "" }.
3324
3325 2023-09-13  François Dumont  <fdumont@gcc.gnu.org>
3326
3327         * include/std/format (std::__format::_Arg_store): Explicit version
3328         namespace on make_format_args friend declaration.
3329
3330 2023-09-12  Patrick Palka  <ppalka@redhat.com>
3331
3332         PR libstdc++/111327
3333         * include/std/functional (_GLIBCXX_NOT_FN_CALL_OP): Also define
3334         a deleted fallback operator() overload.  Constrain both the
3335         enabled and deleted overloads accordingly.
3336         * testsuite/20_util/function_objects/not_fn/111327.cc: New test.
3337
3338 2023-09-12  Patrick Palka  <ppalka@redhat.com>
3339
3340         PR libstdc++/111327
3341         * include/std/functional (_Bind_front::operator()): Add deleted
3342         fallback overloads for each const/ref qualifier pair.  Give the
3343         enabled overloads dummy constraints to make each one more
3344         specialized than the corresponding deleted overload.
3345         * testsuite/20_util/function_objects/bind_front/111327.cc: New test.
3346
3347 2023-09-12  Patrick Palka  <ppalka@redhat.com>
3348
3349         * include/std/functional (_Bind_front0): Remove.
3350         (_Bind_front_t): Adjust.
3351
3352 2023-09-12  Jonathan Wakely  <jwakely@redhat.com>
3353
3354         * python/libstdcxx/v6/printers.py: Reformat.
3355         * python/libstdcxx/v6/xmethods.py: Likewise.
3356
3357 2023-09-11  Jonathan Wakely  <jwakely@redhat.com>
3358
3359         * src/c++11/debug.cc (acquire_sequence_ptr_for_lock): New
3360         function.
3361         (reset_sequence_ptr): New function.
3362         (_Safe_iterator_base::_M_detach)
3363         (_Safe_local_iterator_base::_M_detach): Replace bare atomic_load
3364         with acquire_sequence_ptr_for_lock.
3365         (_Safe_iterator_base::_M_reset): Replace bare atomic_store with
3366         reset_sequence_ptr.
3367
3368 2023-09-11  Jonathan Wakely  <jwakely@redhat.com>
3369
3370         * src/c++11/Makefile.am: Add new file.
3371         * src/c++11/Makefile.in: Regenerate.
3372         * src/c++11/debug.cc (__glibcxx_assert_fail): Move to ...
3373         * src/c++11/assert_fail.cc: New file.
3374
3375 2023-09-11  Ken Matsui  <kmatsui@gcc.gnu.org>
3376
3377         * include/bits/c++config (_GLIBCXX_HAS_BUILTIN): Do not undef.
3378         (_GLIBCXX_USE_BUILTIN_TRAIT): Define.
3379
3380 2023-09-11  Jonathan Wakely  <jwakely@redhat.com>
3381
3382         * include/bits/version.def (__cpp_lib_formatters): Define.
3383         * include/bits/version.h: Regenerate.
3384         * include/std/stacktrace (formatter<stacktrace_entry>)
3385         (formatter<basic_stacktrace<Alloc>>): Define.
3386         * include/std/thread (formatter<thread::id, charT>): Define.
3387         * testsuite/19_diagnostics/stacktrace/output.cc: New test.
3388         * testsuite/19_diagnostics/stacktrace/synopsis.cc: Add
3389         std::formatter specializations.
3390         * testsuite/19_diagnostics/stacktrace/version.cc: Check
3391         __cpp_lib_formatters macro.
3392         * testsuite/30_threads/thread/id/hash.cc: Remove gthreads
3393         dependency.
3394         * testsuite/30_threads/thread/id/operators.cc: Likewise.
3395         * testsuite/30_threads/thread/id/operators_c++20.cc: Likewise.
3396         * testsuite/30_threads/thread/id/output.cc: New test.
3397
3398 2023-09-11  Pekka Seppänen  <pexu@gcc.mail.kapsi.fi>
3399
3400         * src/c++11/cow-locale_init.cc: Add [[maybe_unused]] attribute.
3401         * src/c++17/fs_path.cc (path::_S_convert_loc): Likewise.
3402         * src/filesystem/path.cc (path::_S_convert_loc): Likewise.
3403
3404 2023-09-08  Jonathan Wakely  <jwakely@redhat.com>
3405
3406         * acinclude.m4 (GLIBCXX_CONFIGURE): Add c++23 directory.
3407         * configure: Regenerate.
3408         * doc/html/manual/*: Regenerate.
3409         * doc/xml/manual/using.xml: Update documentation on linking.
3410         * include/std/stacktrace: Remove declarations of libbacktrace
3411         APIs.
3412         (stacktrace_entry::_S_err_handler, stacktrace_entry::_S_init):
3413         Remove.
3414         (stacktrace_entry::_Info): New class.
3415         (stacktrace_entry::_M_get_info): Use _Info.
3416         (__stacktrace_impl): New class.
3417         (basic_stacktrace): Derive from __stacktrace_impl.
3418         (basic_stacktrace::current): Use __stacktrace_impl::_S_current.
3419         * scripts/testsuite_flags.in: Adjust LDFLAGS to find
3420         libstdc++exp instead of libstdc++_libbacktrace.
3421         * src/Makefile.am (SUBDIRS): Add c++23 directory.
3422         * src/Makefile.in: Regenerate.
3423         * src/c++20/Makefile.am: Fix comment.
3424         * src/c++20/Makefile.in: Regenerate.
3425         * src/c++23/Makefile.am: New file.
3426         * src/c++23/Makefile.in: New file.
3427         * src/c++23/stacktrace.cc: New file with definitions of
3428         stacktrace_entry::_Info and __stacktrace_impl members.
3429         * src/experimental/Makefile.am: Use LIBADD to include other
3430         libraries.
3431         * src/experimental/Makefile.in: Regenerate.
3432         * src/libbacktrace/Makefile.am: Use noinst_LTLIBRARIES.
3433         * src/libbacktrace/Makefile.in: Regenerate.
3434         * testsuite/19_diagnostics/stacktrace/current.cc: Adjust
3435         dg-options to use -lstdc++exp.
3436         * testsuite/19_diagnostics/stacktrace/entry.cc: Likewise.
3437         * testsuite/19_diagnostics/stacktrace/stacktrace.cc: Likewise.
3438         * testsuite/23_containers/vector/debug/assign4_backtrace_neg.cc:
3439         Likewise.
3440
3441 2023-09-08  Alexey Lapshin  <alexey.lapshin@espressif.com>
3442
3443         * src/libbacktrace/Makefile.am: Remove -Werror.
3444         * src/libbacktrace/Makefile.in: Regenerate.
3445
3446 2023-09-08  Jonathan Wakely  <jwakely@redhat.com>
3447
3448         * testsuite/Makefile.am (check-DEJAGNU): Use @ in recipe.
3449         * testsuite/Makefile.in: Regenerate.
3450
3451 2023-09-08  Yang Yujie  <yangyujie@loongson.cn>
3452
3453         * configure.host: Register t-loongarch in tmake_file.
3454         * config/cpu/loongarch/t-loongarch: New file.  Manually refresh
3455         MULTISUBDIR with $(shell $(CXX) --print-multi-directory).
3456
3457 2023-09-07  Bruno Victal  <mirai@makinata.eu>
3458
3459         * acinclude.m4: Update docbook xsl URI.
3460         * configure: Regenerate.
3461
3462 2023-09-07  Bruno Victal  <mirai@makinata.eu>
3463
3464         * doc/Makefile.am: Fix 'doc-install-info' rule.
3465         Fix typo in commment.
3466         * doc/Makefile.in: Regenerate.
3467
3468 2023-09-07  Jonathan Wakely  <jwakely@redhat.com>
3469
3470         * testsuite/27_io/filesystem/path/concat/94063.cc: Simplify
3471         dg-do target selector.
3472
3473 2023-09-07  Jonathan Wakely  <jwakely@redhat.com>
3474
3475         * testsuite/config/default.exp: Remove trailing whitespace.
3476         * testsuite/lib/dg-options.exp: Likewise.
3477         * testsuite/lib/prune.exp: Likewise.
3478         * testsuite/libstdc++-abi/abi.exp: Likewise.
3479         * testsuite/libstdc++-dg/conformance.exp: Likewise.
3480         * testsuite/libstdc++-prettyprinters/prettyprinters.exp:
3481         Likewise.
3482         * testsuite/libstdc++-xmethods/xmethods.exp: Likewise.
3483         * testsuite/lib/libstdc++.exp: Likewise.
3484         (check_v3_target_c_std): Fix filename for temporary source file.
3485
3486 2023-09-07  Jonathan Wakely  <jwakely@redhat.com>
3487
3488         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for mkdir,
3489         chmod, chdir, and getcwd.
3490         * config.h.in: Regenerate.
3491         * configure: Regenerate.
3492         * src/c++17/fs_ops.cc (create_dir): Use USE_MKDIR macro.
3493         (fs::current_path): Use USE_GETCWD and USE_CHDIR macros.
3494         (fs::permissions): Use USE_CHMOD macro.
3495         * src/filesystem/ops-common.h [FILESYSTEM_IS_WINDOWS]
3496         (chmod, mkdir, getcwd, chdir): Define new macros.
3497         [FILESYSTEM_IS_WINDOWS] (chmod, mkdir, getcwd, chdir): Use
3498         new macros.
3499         * src/filesystem/ops.cc (create_dir): Use USE_MKDIR macro.
3500         (fs::current_path): Use USE_GETCWD and USE_CHDIR macros.
3501         (fs::permissions): Use USE_CHMOD macro.
3502
3503 2023-09-07  Jonathan Wakely  <jwakely@redhat.com>
3504
3505         * acinclude.m4 (GLIBCXX_ENABLE_BACKTRACE): Disable by default
3506         for avr.
3507         * configure: Regenerate.
3508
3509 2023-09-07  Jonathan Wakely  <jwakely@redhat.com>
3510
3511         * testsuite/23_containers/unordered_map/operations/1.cc: Add
3512         dg-options for C++20 mode.
3513         * testsuite/23_containers/unordered_multimap/operations/1.cc:
3514         Likewise.
3515         * testsuite/23_containers/unordered_multiset/operations/1.cc:
3516         Likewise.
3517         * testsuite/23_containers/unordered_set/operations/1.cc:
3518         Likewise.
3519         * testsuite/std/time/parse.cc: Move dg-options before dg-do.
3520
3521 2023-09-07  Jonathan Wakely  <jwakely@redhat.com>
3522
3523         * testsuite/std/ranges/access/cbegin.cc: Adjust for C++23
3524         compatibility.
3525         * testsuite/std/ranges/access/cdata.cc: Likewise.
3526         * testsuite/std/ranges/access/cend.cc: Likewise.
3527         * testsuite/std/ranges/access/crbegin.cc: Likewise.
3528         * testsuite/std/ranges/access/crend.cc: Likewise.
3529         * testsuite/std/ranges/adaptors/take.cc: Likewise.
3530         * testsuite/std/ranges/adaptors/take_while.cc: Likewise.
3531         * testsuite/std/ranges/adaptors/transform.cc: Likewise.
3532
3533 2023-09-07  Jonathan Wakely  <jwakely@redhat.com>
3534
3535         * include/bits/iterator_concepts.h (__imove::iter_move): Define
3536         poison pill as deleted for consistency.
3537         (__access::begin): Replace with a single declaration.
3538         * include/bits/ranges_base.h (__access::end, __access::rbegin)
3539         (__access::rend, __access::size): Likewise.
3540         * include/bits/version.def (ranges): Update value for C++23.
3541         * include/bits/version.h: Regenerate.
3542         * libsupc++/compare (__compare): Add missing poison pill
3543         overloads.
3544         * testsuite/std/ranges/version_c++23.cc: Adjust expected value
3545         of __cpp_lib_ranges.
3546         * testsuite/std/ranges/access/p2602.cc: New test.
3547
3548 2023-09-07  Jonathan Wakely  <jwakely@redhat.com>
3549
3550         * include/bits/iterator_concepts.h (ranges::__cust_imove):
3551         Rename to ranges::__imove.
3552         (_IMove): Rename to _IterMove.
3553         (ranges::__cust_iswap): Rename to ranges::__iswap.
3554         (ranges::__cust): Rename to ranges::_Cpo.
3555         (ranges::__cust_access): Rename to ranges::__access.
3556         * include/bits/ranges_base.h (ranges::__cust_access): Rename to
3557         ranges::__access.
3558         (ranges::__cust): Rename to ranges::_Cpo.
3559         * include/std/concepts (ranges::__cust_swap):  Rename to
3560         ranges::__swap.
3561         (ranges::__cust): Rename to ranges::_Cpo.
3562         * libsupc++/compare (__cmp_cust): Rename to __compare.
3563         (__cmp_algo): Rename to _Cpo.
3564
3565 2023-09-07  Jonathan Wakely  <jwakely@redhat.com>
3566
3567         * include/bits/version.def (ranges): Update value.
3568         * include/bits/version.h: Regenerate.
3569         * include/std/ranges (__detail::__boxable): Use
3570         move_constructible instead of copy_constructible for C++23.
3571         (__detail::__box<T>): Adjust constraints for partial
3572         specialization.
3573         (single_view, transform_view): Use __box_constructible instead
3574         of copy_constructible in constraints.
3575         (zip_transform_view, adjacent_transform_view, repeat_view): Use
3576         move_constructible instead of copy_constructible in constraints.
3577         * testsuite/std/ranges/adaptors/adjacent_transform/1.cc: Check
3578         construction from move-only argument.
3579         * testsuite/std/ranges/adaptors/transform.cc: Likewise.
3580         * testsuite/std/ranges/repeat/1.cc: Likewise.
3581         * testsuite/std/ranges/single_view.cc: Likewise.
3582         * testsuite/std/ranges/zip_transform/1.cc: Likewise.
3583         * testsuite/std/ranges/version_c++23.cc: Adjust expected value
3584         of __cpp_lib_ranges.
3585
3586 2023-09-07  Jonathan Wakely  <jwakely@redhat.com>
3587
3588         * testsuite/util/testsuite_iterators.h (is_customization_point_object):
3589         Remove parameter name.
3590
3591 2023-09-06  Jonathan Wakely  <jwakely@redhat.com>
3592
3593         * acinclude.m4 (GLIBCXX_ENABLE_BACKTRACE): Disable by default
3594         for freestanding.
3595         * configure: Regenerate.
3596
3597 2023-09-04  Christophe Lyon  <christophe.lyon@linaro.org>
3598
3599         Revert
3600         2023-09-04  Christophe Lyon  <christophe.lyon@linaro.org>
3601
3602         PR libstdc++/111238
3603         * configure: Regenerate.
3604         * configure.ac: Call GLIBCXX_CHECK_LINKER_FEATURES in cross,
3605         non-Canadian builds.
3606
3607 2023-09-04  Christophe Lyon  <christophe.lyon@linaro.org>
3608
3609         PR libstdc++/111238
3610         * configure: Regenerate.
3611         * configure.ac: Call GLIBCXX_CHECK_LINKER_FEATURES in cross,
3612         non-Canadian builds.
3613
3614 2023-09-04  Jonathan Wakely  <jwakely@redhat.com>
3615
3616         * testsuite/26_numerics/complex/literals/types.cc: Remove
3617         dg-options and add target selector instead.
3618
3619 2023-09-04  Jonathan Wakely  <jwakely@redhat.com>
3620
3621         * testsuite/tr1/6_containers/utility/pair.cc: Remove dg-options
3622         and qualify ambiguous calls to get.
3623         * testsuite/tr1/8_c_compatibility/cmath/pow_cmath.cc: Adjust
3624         expected result for std::pow(float, int) as per DR 550.
3625
3626 2023-09-04  Jonathan Wakely  <jwakely@redhat.com>
3627
3628         * testsuite/20_util/auto_ptr/1.cc: Remove dg-options -std=c++03
3629         and add dg-warning for deprecation warnings.
3630         * testsuite/20_util/auto_ptr/2.cc: Likewise.
3631         * testsuite/20_util/auto_ptr/3.cc: Likewise.
3632         * testsuite/20_util/auto_ptr/3946.cc: Likewise.
3633         * testsuite/20_util/auto_ptr/4.cc: Likewise.
3634         * testsuite/20_util/auto_ptr/5.cc: Likewise.
3635         * testsuite/20_util/auto_ptr/6.cc: Likewise.
3636         * testsuite/20_util/auto_ptr/7.cc: Likewise.
3637         * testsuite/20_util/auto_ptr/assign_neg.cc: Likewise.
3638         * testsuite/20_util/auto_ptr/requirements/explicit_instantiation/1.cc:
3639         Likewise.
3640         * testsuite/tr1/2_general_utilities/shared_ptr/assign/auto_ptr.cc:
3641         Likewise.
3642         * testsuite/tr1/2_general_utilities/shared_ptr/assign/auto_ptr_neg.cc:
3643         Likewise.
3644         * testsuite/tr1/2_general_utilities/shared_ptr/assign/auto_ptr_rvalue_neg.cc:
3645         Likewise.
3646         * testsuite/tr1/2_general_utilities/shared_ptr/cons/43820_neg.cc:
3647         Likewise.
3648         * testsuite/tr1/2_general_utilities/shared_ptr/cons/auto_ptr.cc:
3649         Likewise.
3650         * testsuite/tr1/2_general_utilities/shared_ptr/cons/auto_ptr_neg.cc:
3651         Likewise.
3652
3653 2023-09-04  Jonathan Wakely  <jwakely@redhat.com>
3654
3655         PR libstdc++/26142
3656         * testsuite/23_containers/vector/26412-1.cc: Moved to...
3657         * testsuite/23_containers/vector/26142-1.cc: ...here.
3658         * testsuite/23_containers/vector/26412-2.cc: Moved to...
3659         * testsuite/23_containers/vector/26142-2.cc: ...here.
3660
3661 2023-09-04  Jonathan Wakely  <jwakely@redhat.com>
3662
3663         * testsuite/20_util/bitset/107037.cc: Add c++98_only selector.
3664         * testsuite/26_numerics/complex/56111.cc: Likewise.
3665
3666 2023-09-04  Jonathan Wakely  <jwakely@redhat.com>
3667
3668         * testsuite/23_containers/deque/requirements/explicit_instantiation/2.cc:
3669         Add dg-options to restrict the test to C++98 mode.
3670         * testsuite/23_containers/list/requirements/explicit_instantiation/2.cc:
3671         Likewise.
3672
3673 2023-09-04  Jonathan Wakely  <jwakely@redhat.com>
3674
3675         * testsuite/20_util/expected/bad.cc: Add missing target
3676         selector.
3677
3678 2023-09-01  Jonathan Wakely  <jwakely@redhat.com>
3679
3680         * testsuite/25_algorithms/copy/debug/constexpr_neg.cc: Adjust
3681         expected errors.
3682         * testsuite/25_algorithms/equal/debug/constexpr_neg.cc:
3683         Likewise.
3684
3685 2023-09-01  Jonathan Wakely  <jwakely@redhat.com>
3686
3687         * testsuite/27_io/filesystem/iterators/91067.cc: Add
3688         -Wno-self-move to options.
3689         * testsuite/27_io/filesystem/path/assign/copy.cc: Likewise.
3690
3691 2023-09-01  Vladimir Palevich  <palevichva@gmail.com>
3692
3693         PR libstdc++/110879
3694         * include/bits/vector.tcc (_M_realloc_insert): End guard
3695         lifetime just before assignment to class members.
3696         (_M_default_append): Likewise.
3697
3698 2023-09-01  Jonathan Wakely  <jwakely@redhat.com>
3699
3700         * src/c++17/fs_ops.cc (fs::absolute) [FILESYSTEM_IS_WINDOWS]:
3701         Use __resize_and_overwrite to fill buffer.
3702         (fs::read_symlink) [HAVE_READLINK]: Likewise.
3703         * src/filesystem/ops-common.h (get_temp_directory_from_env)
3704         [FILESYSTEM_IS_WINDOWS]: Likewise.
3705
3706 2023-09-01  Jonathan Wakely  <jwakely@redhat.com>
3707
3708         PR libstdc++/111077
3709         * include/bits/atomic_base.h (__atomic_impl::__compare_exchange):
3710         Add _AtomicRef non-type template parameter and use a loop if it
3711         is true.
3712         (__atomic_impl::compare_exchange_weak): Add _AtomicRef NTTP.
3713         (__atomic_impl::compare_exchange_strong): Likewise.
3714         (atomic_ref::compare_exchange_weak): Use true for NTTP.
3715         (atomic_ref::compare_exchange_strong): Use true for NTTP.
3716         * testsuite/29_atomics/atomic_ref/compare_exchange_padding.cc:
3717         Fix test to not rely on atomic_ref::load() to return an object
3718         with padding preserved.
3719
3720 2023-09-01  Jonathan Wakely  <jwakely@redhat.com>
3721
3722         * testsuite/27_io/filesystem/path/108636.cc: Add dg-require for
3723         filesystem support.
3724
3725 2023-09-01  Jonathan Wakely  <jwakely@redhat.com>
3726
3727         * src/c++20/tzdb.cc (tzdb::current_zone): Check configure macros
3728         for POSIX readlink before using filesystem::read_symlink.
3729
3730 2023-09-01  Jonathan Wakely  <jwakely@redhat.com>
3731
3732         * acinclude.m4 (GLIBCXX_ENABLE_BACKTRACE): Default to yes.
3733         * configure: Regenerate.
3734
3735 2023-09-01  Jonathan Wakely  <jwakely@redhat.com>
3736
3737         * include/bits/chrono_io.h (_Parser::operator()): Set failbit
3738         early if invalid values are read when _M_need & _TimeOfDay is
3739         non-zero.
3740         * testsuite/std/time/parse.cc: Check that "25:59" cannot be
3741         parsed for "%H:%M".
3742
3743 2023-09-01  Jonathan Wakely  <jwakely@redhat.com>
3744
3745         PR libstdc++/111162
3746         * include/bits/chrono_io.h (_Parser::Operator()): Check %C
3747         values are in range of year::min() to year::max().
3748         * testsuite/std/time/parse.cc: Check out of range centuries.
3749
3750 2023-09-01  Jonathan Wakely  <jwakely@redhat.com>
3751
3752         * include/std/format (__format::_Sink::_M_reset): Change second
3753         argument from iterator to offset.
3754
3755 2023-08-24  Paul Dreik  <gccpatches@pauldreik.se>
3756
3757         PR libstdc++/111102
3758         * testsuite/std/format/string.cc: Check wide character format
3759         strings with out-of-range widths.
3760
3761 2023-08-24  Paul Dreik  <gccpatches@pauldreik.se>
3762
3763         PR libstdc++/111102
3764         * include/std/format (__format::__parse_integer): Check for
3765         non-null pointer.
3766
3767 2023-08-24  Jonathan Wakely  <jwakely@redhat.com>
3768
3769         * testsuite/std/format/functions/format_to.cc: Avoid warning for
3770         unused variables.
3771
3772 2023-08-24  Jonathan Wakely  <jwakely@redhat.com>
3773
3774         * include/std/atomic: Add comment to #ifdef and fix indentation.
3775         * include/std/ostream: Check __glibcxx_syncbuf instead of
3776         __cplusplus and _GLIBCXX_HOSTED.
3777         * include/std/thread: Add comment to #ifdef.
3778
3779 2023-08-24  Jonathan Wakely  <jwakely@redhat.com>
3780
3781         * include/bits/version.def (__cpp_lib_ratio): Define.
3782         * include/bits/version.h: Regenerate.
3783         * include/std/ratio (quecto, ronto, yocto, zepto)
3784         (zetta, yotta, ronna, quetta): Define.
3785         * testsuite/20_util/ratio/operations/ops_overflow_neg.cc: Adjust
3786         dg-error line numbers.
3787
3788 2023-08-24  Jonathan Wakely  <jwakely@redhat.com>
3789
3790         * python/libstdcxx/v6/printers.py (StdLocalePrinter): New
3791         printer class.
3792         * testsuite/libstdc++-prettyprinters/locale.cc: New test.
3793
3794 2023-08-24  Jonathan Wakely  <jwakely@redhat.com>
3795
3796         PR libstdc++/110944
3797         * python/libstdcxx/v6/printers.py (StdExpOptionalPrinter): Do
3798         not show template arguments.
3799         (StdVariantPrinter): Likewise.
3800         * testsuite/libstdc++-prettyprinters/compat.cc: Adjust expected
3801         output.
3802         * testsuite/libstdc++-prettyprinters/cxx17.cc: Likewise.
3803         * testsuite/libstdc++-prettyprinters/libfundts.cc: Likewise.
3804
3805 2023-08-23  François Dumont  <fdumont@gcc.gnu.org>
3806
3807         * testsuite/util/replacement_memory_operators.h
3808         (counter::scope): New, capture and reset counter count at construction and
3809         restore it at destruction.
3810         (counter::check_new): Add scope instantiation.
3811         * testsuite/23_containers/unordered_map/96088.cc (main):
3812         Add counter::scope instantiation.
3813         * testsuite/23_containers/unordered_multimap/96088.cc (main): Likewise.
3814         * testsuite/23_containers/unordered_multiset/96088.cc (main): Likewise.
3815         * testsuite/23_containers/unordered_set/96088.cc (main): Likewise.
3816         * testsuite/ext/malloc_allocator/deallocate_local.cc (main): Likewise.
3817         * testsuite/ext/new_allocator/deallocate_local.cc (main): Likewise.
3818         * testsuite/ext/throw_allocator/deallocate_local.cc (main): Likewise.
3819         * testsuite/ext/pool_allocator/allocate_chunk.cc (started): New global.
3820         (operator new(size_t)): Check started.
3821         (main): Set/Unset started.
3822         * testsuite/17_intro/no_library_allocation.cc: New test case.
3823
3824 2023-08-21  Jonathan Wakely  <jwakely@redhat.com>
3825
3826         * testsuite/18_support/nested_exception/rethrow_if_nested-term.cc:
3827         Call std::set_terminate before throwing the nested exception.
3828
3829 2023-08-18  Jonathan Wakely  <jwakely@redhat.com>
3830
3831         PR target/111060
3832         * include/std/format (formatter): Only define specializations
3833         for 16-bit floating-point types for C++23.
3834         * include/std/limits (numeric_limits): Likewise.
3835
3836 2023-08-18  Jonathan Wakely  <jwakely@redhat.com>
3837
3838         * include/bits/chrono_io.h (operator<<): Make uses of wide
3839         strings with streams and std::format type-dependent on _CharT.
3840         * include/std/format [!_GLIBCXX_USE_WCHAR_T] Do not use
3841         __to_wstring_numeric.
3842
3843 2023-08-18  Jonathan Wakely  <jwakely@redhat.com>
3844
3845         * include/bits/chrono_io.h (operator<<): Use __format_context.
3846         * include/std/format (__format::__format_context): New alias
3847         template.
3848         [!_GLIBCXX_USE_WCHAR_T] (wformat_args, make_wformat_arg):
3849         Disable.
3850
3851 2023-08-17  Jonathan Wakely  <jwakely@redhat.com>
3852
3853         Revert:
3854         2023-08-17  Jonathan Wakely  <jwakely@redhat.com>
3855
3856         * config/locale/generic/c_locale.cc (__convert_to_v): Reuse
3857         double overload for long double if possible.
3858
3859 2023-08-17  Jonathan Wakely  <jwakely@redhat.com>
3860
3861         * src/c++20/tzdb.cc (tzdata_file, leaps_file): Change type to
3862         std::string_view.
3863
3864 2023-08-17  Jonathan Wakely  <jwakely@redhat.com>
3865
3866         * config/locale/generic/c_locale.cc (__convert_to_v): Reuse
3867         double overload for long double if possible.
3868
3869 2023-08-17  Jonathan Wakely  <jwakely@redhat.com>
3870
3871         * src/c++98/localename.cc (is_C_locale): New function.
3872         (locale::locale(const char*)): Use is_C_locale.
3873
3874 2023-08-17  Jonathan Wakely  <jwakely@redhat.com>
3875
3876         PR libstdc++/110945
3877         * include/bits/basic_string.h (basic_string::assign(Iter, Iter)):
3878         Dispatch to _M_replace or move assignment from a temporary,
3879         based on the iterator type.
3880
3881 2023-08-17  Jonathan Wakely  <jwakely@redhat.com>
3882
3883         * include/std/format (formatter): Add partial specializations
3884         for extended floating-point types.
3885         * testsuite/std/format/functions/format.cc: Move test_float128()
3886         to ...
3887         * testsuite/std/format/formatter/ext_float.cc: New test.
3888
3889 2023-08-17  Jonathan Wakely  <jwakely@redhat.com>
3890
3891         * include/bits/c++config (__gnu_cxx::__bfloat16_t): Define
3892         whenever __BFLT16_DIG__ is defined, not only for C++23.
3893         * include/std/limits (numeric_limits<bfloat16_t>): Likewise.
3894         (numeric_limits<_Float16>, numeric_limits<_Float32>)
3895         (numeric_limits<_Float64>): Likewise for other extended
3896         floating-point types.
3897
3898 2023-08-17  Jonathan Wakely  <jwakely@redhat.com>
3899
3900         * include/experimental/internet (address_v4::to_string): Remove
3901         unused parameter name.
3902
3903 2023-08-17  Jonathan Wakely  <jwakely@redhat.com>
3904
3905         * libsupc++/compare (__cmp_cat::__unseq): Make ctor consteval.
3906         * testsuite/18_support/comparisons/categories/zero_neg.cc: Prune
3907         excess errors caused by invalid consteval calls.
3908
3909 2023-08-17  Jonathan Wakely  <jwakely@redhat.com>
3910
3911         * include/bits/chrono_io.h (__units_suffix_misc): Remove.
3912         (__units_suffix): Return a known suffix as string view, do not
3913         write unknown suffixes to a buffer.
3914         (__fmt_units_suffix): New function that formats the suffix using
3915         std::format_to.
3916         (operator<<, __chrono_formatter::_M_q): Use __fmt_units_suffix.
3917         (__chrono_formatter::_M_Z): Correct lifetime of wstring.
3918
3919 2023-08-17  Jonathan Wakely  <jwakely@redhat.com>
3920
3921         * include/std/format [_GLIBCXX_USE_WCHAR_T]: Guard all wide
3922         string formatters with this macro.
3923         (__formatter_int::_M_format_int, __formatter_fp::format)
3924         (formatter<const void*, C>::format): Use __to_wstring_numeric
3925         instead of std::ctype::widen.
3926         (__formatter_fp::_M_localize): Use hardcoded wchar_t values
3927         instead of std::ctype::widen.
3928         * testsuite/std/format/functions/format.cc: Add more checks for
3929         wstring formatting of arithmetic types.
3930
3931 2023-08-17  Jonathan Wakely  <jwakely@redhat.com>
3932
3933         * include/bits/basic_string.h (to_string(floating-point-type)):
3934         Implement using std::to_chars for C++26.
3935         * include/bits/version.def (__cpp_lib_to_string): Define.
3936         * include/bits/version.h: Regenerate.
3937         * testsuite/21_strings/basic_string/numeric_conversions/char/dr1261.cc:
3938         Adjust expected result in C++26 mode.
3939         * testsuite/21_strings/basic_string/numeric_conversions/char/to_string.cc:
3940         Likewise.
3941         * testsuite/21_strings/basic_string/numeric_conversions/wchar_t/dr1261.cc:
3942         Likewise.
3943         * testsuite/21_strings/basic_string/numeric_conversions/wchar_t/to_wstring.cc:
3944         Likewise.
3945         * testsuite/21_strings/basic_string/numeric_conversions/char/to_string_float.cc:
3946         New test.
3947         * testsuite/21_strings/basic_string/numeric_conversions/wchar_t/to_wstring_float.cc:
3948         New test.
3949         * testsuite/21_strings/basic_string/numeric_conversions/version.cc:
3950         New test.
3951
3952 2023-08-17  Jonathan Wakely  <jwakely@redhat.com>
3953
3954         * include/bits/basic_string.h (to_string(integral-type)): Use
3955         resize_and_overwrite when available.
3956         (__to_wstring_numeric): New helper functions.
3957         (to_wstring): Use std::to_string then __to_wstring_numeric.
3958         * testsuite/21_strings/basic_string/numeric_conversions/char/to_string_int.cc:
3959         Remove check for no excess capacity.
3960
3961 2023-08-17  Jonathan Wakely  <jwakely@redhat.com>
3962
3963         * include/bits/basic_string.h (__resize_and_overwrite): New
3964         function.
3965         * include/bits/basic_string.tcc (__resize_and_overwrite): New
3966         function.
3967         (resize_and_overwrite): Simplify by using reserve instead of
3968         growing the string manually. Adjust for C++11 compatibility.
3969         * include/bits/cow_string.h (resize_and_overwrite): New
3970         function.
3971         (__resize_and_overwrite): New function.
3972         * include/bits/version.def (__cpp_lib_string_resize_and_overwrite):
3973         Do not depend on cxx11abi.
3974         * include/bits/version.h: Regenerate.
3975         * include/std/format (__formatter_fp::_S_resize_and_overwrite):
3976         Remove.
3977         (__formatter_fp::format, __formatter_fp::_M_localize): Use
3978         __resize_and_overwrite instead of _S_resize_and_overwrite.
3979         * testsuite/21_strings/basic_string/capacity/char/resize_and_overwrite.cc:
3980         Adjust for C++11 compatibility when included by ...
3981         * testsuite/21_strings/basic_string/capacity/char/resize_and_overwrite_ext.cc:
3982         New test.
3983
3984 2023-08-17  Patrick Palka  <ppalka@redhat.com>
3985
3986         * include/bits/regex.h (regex_iterator::iterator_concept):
3987         Define for C++20 as per P2770R0.
3988         (regex_token_iterator::iterator_concept): Likewise.
3989         * include/std/ranges (__detail::__as_lvalue): Define.
3990         (join_view::_Iterator): Befriend join_view.
3991         (join_view::_Iterator::_M_satisfy): Use _M_get_outer
3992         instead of _M_outer.
3993         (join_view::_Iterator::_M_get_outer): Define.
3994         (join_view::_Iterator::_Iterator): Split constructor taking
3995         _Parent argument into two as per P2770R0.  Remove constraint on
3996         default constructor.
3997         (join_view::_Iterator::_M_outer): Make this data member present
3998         only when the underlying range is forward.
3999         (join_view::_Iterator::operator++): Use _M_get_outer instead of
4000         _M_outer.
4001         (join_view::_Iterator::operator--): Use __as_lvalue helper.
4002         (join_view::_Iterator::operator==): Adjust constraints as per
4003         P2770R0.
4004         (join_view::_Sentinel::__equal): Use _M_get_outer instead of
4005         _M_outer.
4006         (join_view::_M_outer): New data member when the underlying range
4007         is non-forward.
4008         (join_view::begin): Adjust definition as per P2770R0.
4009         (join_view::end): Likewise.
4010         (join_with_view::_M_outer_it): New data member when the
4011         underlying range is non-forward.
4012         (join_with_view::begin): Adjust definition as per P2770R0.
4013         (join_with_view::end): Likewise.
4014         (join_with_view::_Iterator::_M_outer_it): Make this data member
4015         present only when the underlying range is forward.
4016         (join_with_view::_Iterator::_M_get_outer): Define.
4017         (join_with_view::_Iterator::_Iterator): Split constructor
4018         taking _Parent argument into two as per P2770R0.  Remove
4019         constraint on default constructor.
4020         (join_with_view::_Iterator::_M_update_inner): Adjust definition
4021         as per P2770R0.
4022         (join_with_view::_Iterator::_M_get_inner): Likewise.
4023         (join_with_view::_Iterator::_M_satisfy): Adjust calls to
4024         _M_get_inner.  Use _M_get_outer instead of _M_outer_it.
4025         (join_with_view::_Iterator::operator==): Adjust constraints
4026         as per P2770R0.
4027         (join_with_view::_Sentinel::operator==): Use _M_get_outer
4028         instead of _M_outer_it.
4029         * testsuite/std/ranges/adaptors/p2770r0.cc: New test.
4030
4031 2023-08-17  Patrick Palka  <ppalka@redhat.com>
4032
4033         PR libstdc++/108827
4034         * include/std/ranges (__adaptor::_RangeAdaptorClosure):
4035         Convert into a CRTP class template.  Move hidden operator|
4036         friends into namespace scope and adjust their constraints.
4037         (__closure::__is_range_adaptor_closure_fn): Define.
4038         (__closure::__is_range_adaptor_closure): Define.
4039         (__adaptor::_Partial): Adjust use of _RangeAdaptorClosure.
4040         (__adaptor::_Pipe): Likewise.
4041         (views::_All): Likewise.
4042         (views::_Join): Likewise.
4043         (views::_Common): Likewise.
4044         (views::_Reverse): Likewise.
4045         (views::_Elements): Likewise.
4046         (views::_Adjacent): Likewise.
4047         (views::_AsRvalue): Likewise.
4048         (views::_Enumerate): Likewise.
4049         (views::_AsConst): Likewise.
4050         * testsuite/std/ranges/adaptors/all.cc: Reinstate assertion
4051         expecting that adding empty range adaptor closure objects to a
4052         pipeline doesn't increase the size of a pipeline.
4053
4054 2023-08-17  Jonathan Wakely  <jwakely@redhat.com>
4055
4056         * include/std/format (__format::_Pres_type): Add _Pres_F.
4057         (__formatter_fp::parse): Use _Pres_F for 'F'.
4058         (__formatter_fp::format): Set __upper for _Pres_F.
4059         * testsuite/std/format/functions/format.cc: Check formatting of
4060         infinity and NaN for each presentation type.
4061
4062 2023-08-17  Jonathan Wakely  <jwakely@redhat.com>
4063
4064         * include/Makefile.in: Regenerate.
4065
4066 2023-08-17  Jonathan Wakely  <jwakely@redhat.com>
4067
4068         * testsuite/24_iterators/move_iterator/p2520r0.cc: Add no_pch.
4069         * testsuite/std/format/functions/format.cc: Likewise.
4070         * testsuite/std/format/functions/format_c++23.cc: Likewise.
4071
4072 2023-08-17  Jonathan Wakely  <jwakely@redhat.com>
4073
4074         * testsuite/lib/dg-options.exp (add_options_for_no_pch): Remove
4075         any "-include bits/stdc++.h" from options and add the macro to
4076         the existing options instead of replacing them.
4077
4078 2023-08-16  Jonathan Wakely  <jwakely@redhat.com>
4079
4080         * include/bits/basic_string.tcc (resize_and_overwrite): Invoke
4081         the callable with the same size as resize_and_overwrite was
4082         called with.
4083         * testsuite/21_strings/basic_string/capacity/char/resize_and_overwrite.cc:
4084         Check with small values for the new size.
4085         * testsuite/std/format/functions/format.cc: Check wide
4086         formatting of double values that produce small strings.
4087         * testsuite/std/format/functions/format_c++23.cc: New test.
4088
4089 2023-08-16  Jonathan Wakely  <jwakely@redhat.com>
4090
4091         * include/bits/version.def (stds): Update value for C++23.
4092         * include/bits/version.h: Regenerate.
4093
4094 2023-08-16  Jonathan Wakely  <jwakely@redhat.com>
4095
4096         * testsuite/25_algorithms/pstl/alg_sorting/set_difference.cc:
4097         Fix name of upstream file this was derived from.
4098         * testsuite/25_algorithms/pstl/alg_sorting/set_intersection.cc:
4099         Likewise.
4100         * testsuite/25_algorithms/pstl/alg_sorting/set_symmetric_difference.cc:
4101         Likewise.
4102         * testsuite/25_algorithms/pstl/alg_sorting/set_union.cc:
4103         Likewise.
4104         * testsuite/25_algorithms/pstl/alg_sorting/set_util.h: Likewise.
4105
4106 2023-08-16  Arsen Arsenović  <arsen@aarsen.me>
4107
4108         * libsupc++/typeinfo: Switch to bits/version.h for
4109         __cpp_lib_constexpr_typeinfo.
4110         * libsupc++/new: Switch to bits/version.h for
4111         __cpp_lib_{launder,hardware_interference_size,destroying_delete}.
4112         (launder): Guard behind __cpp_lib_launder.
4113         (hardware_destructive_interference_size)
4114         (hardware_constructive_interference_size): Guard behind
4115         __cpp_lib_hardware_interference_size.
4116         * libsupc++/exception: Switch to bits/version.h for
4117         __cpp_lib_uncaught_exceptions.
4118         (uncaught_exceptions): Guard behind __cpp_lib_uncaught_exceptions.
4119         * libsupc++/compare: Switch to bits/version.h for
4120         __cpp_lib_three_way_comparison.
4121         (three_way_comparable, three_way_comparable_with)
4122         (compare_three_way, weak_order, strong_order, partial_order):
4123         Guard behind __cpp_lib_three_way_comparison >= 201907L.
4124         * include/std/chrono: Drop __cpp_lib_chrono definition.
4125         * include/std/vector: Switch to bits/version.h for
4126         __cpp_lib_erase_if.
4127         (erase, erase_if): Guard behind __cpp_lib_erase_if.
4128         * include/std/variant: Switch to bits/version.h for
4129         __cpp_lib_variant.  Guard whole header behind that FTM.
4130         * include/std/utility: Switch to bits/version.h for
4131         __cpp_lib_{exchange_function,constexpr_algorithms,as_const},
4132         __cpp_lib_{integer_comparison_functions,to_underlying}, and
4133         __cpp_lib_unreachable.
4134         (exchange): Guard behind __cpp_lib_exchange_function.
4135         (cmp_equal, cmp_not_equal, cmp_less, cmp_greater, cmp_less_equal)
4136         (cmp_greater_equal, in_range): Guard behind
4137         __cpp_lib_integer_comparison_functions.
4138         (to_underlying): Guard behind __cpp_lib_to_underlying.
4139         (unreachable): Guard behind __cpp_lib_unreachable.
4140         * include/std/type_traits: Switch to bits/version.h for
4141         __cpp_lib_is_{null_pointer,final,nothrow_convertible,aggregate},
4142         __cpp_lib_is_{constant_evaluated,invocable,layout_compatible},
4143         __cpp_lib_is_{pointer_interconvertible,scoped_enum,swappable},
4144         __cpp_lib_{logical_traits,reference_from_temporary,remove_cvref},
4145         __cpp_lib_{result_of_sfinae,transformation_trait_aliases},
4146         __cpp_lib_{type_identity,type_trait_variable_templates},
4147         __cpp_lib_{unwrap_ref,void_t,integral_constant_callable},
4148         __cpp_lib_{bool_constant,bounded_array_traits}, and
4149         __cpp_lib_has_unique_object_representations.
4150         (integral_constant::operator()): Guard behind
4151         __cpp_lib_integral_constant_callable.
4152         (bool_constant): Guard behind __cpp_lib_bool_constant.
4153         (conjunction, disjunction, negation, conjunction_v, disjunction_v)
4154         (negation_v): Guard behind __cpp_lib_logical_traits.
4155         (is_null_pointer): Guard behind __cpp_lib_is_null_pointer.
4156         (is_final): Guard behind __cpp_lib_is_final.
4157         (is_nothrow_convertible, is_nothrow_convertible_v): Guard behind
4158         __cpp_lib_is_nothrow_convertible.
4159         (remove_const_t, remove_volatile_t, remove_cv_t)
4160         (add_const_t, add_volatile_t, add_cv_t): Guard behind
4161         __cpp_lib_transformation_trait_aliases.
4162         (void_t): Guard behind __cpp_lib_void_t.
4163         (is_swappable_with_v, is_nothrow_swappable_with_v)
4164         (is_swappable_with, is_nothrow_swappable_with): Guard behind
4165         __cpp_lib_is_swappable.
4166         (is_nothrow_invocable_r, is_invocable_r, invoke_result)
4167         (is_invocable, invoke_result_t): Guard behind
4168         __cpp_lib_is_invocable.
4169         (alignment_of_v, extent_v, has_virtual_destructor_v)
4170         (is_abstract_v, is_arithmetic_v, is_array_v)
4171         (is_assignable_v, is_base_of_v, is_class_v, is_compound_v)
4172         (is_constructible_v, is_const_v, is_convertible_v)
4173         (is_copy_assignable_v, is_copy_constructible_v)
4174         (is_default_constructible_v, is_destructible_v)
4175         (is_empty_v, is_enum_v, is_final_v, is_floating_point_v)
4176         (is_function_v, is_fundamental_v, is_integral_v)
4177         (is_invocable_r_v, is_invocable_v, is_literal_type_v)
4178         (is_lvalue_reference_v, is_member_function_pointer_v)
4179         (is_member_object_pointer_v, is_member_pointer_v)
4180         (is_move_assignable_v, is_move_constructible_v)
4181         (is_nothrow_assignable_v, is_nothrow_constructible_v)
4182         (is_nothrow_copy_assignable_v, is_nothrow_copy_constructible_v)
4183         (is_nothrow_default_constructible_v, is_nothrow_destructible_v)
4184         (is_nothrow_invocable_r_v, is_nothrow_invocable_v)
4185         (is_nothrow_move_assignable_v, is_nothrow_move_constructible_v)
4186         (is_null_pointer_v, is_object_v, is_pod_v, is_pointer_v)
4187         (is_polymorphic_v, is_reference_v, is_rvalue_reference_v)
4188         (is_same_v, is_scalar_v, is_signed_v, is_standard_layout_v)
4189         (is_trivially_assignable_v, is_trivially_constructible_v)
4190         (is_trivially_copyable_v, is_trivially_copy_assignable_v)
4191         (is_trivially_copy_constructible_v)
4192         (is_trivially_default_constructible_v)
4193         (is_trivially_destructible_v, is_trivially_move_assignable_v)
4194         (is_trivially_move_constructible_v, is_trivial_v, is_union_v)
4195         (is_unsigned_v, is_void_v, is_volatile_v, rank_v, as variadic):
4196         Guard behind __cpp_lib_type_trait_variable_templates.
4197         (has_unique_object_representations)
4198         (has_unique_object_representations_v): Guard behind
4199         __cpp_lib_has_unique_object_representation.
4200         (is_aggregate): Guard behind __cpp_lib_is_aggregate.
4201         (remove_cvref, remove_cvref_t): Guard behind
4202         __cpp_lib_remove_cvref.
4203         (type_identity, type_identity_t): Guard behind
4204         __cpp_lib_type_identity.
4205         (unwrap_reference, unwrap_reference_t, unwrap_ref_decay)
4206         (unwrap_ref_decay_t): Guard behind __cpp_lib_unwrap_ref.
4207         (is_bounded_array_v, is_unbounded_array_v, is_bounded_array)
4208         (is_unbounded_array): Guard behind __cpp_lib_bounded_array_traits.
4209         (is_scoped_enum, is_scoped_enum_v): Guard behind
4210         __cpp_lib_is_scoped_enum.
4211         (reference_constructs_from_temporary)
4212         (reference_constructs_from_temporary_v): Guard behind
4213         __cpp_lib_reference_from_temporary.
4214         * include/std/tuple: Switch to bits/version.h for
4215         __cpp_lib_{constexpr_tuple,tuple_by_type,apply_make_from_tuple}.
4216         (get<T>): Guard behind __cpp_lib_tuple_by_type.
4217         (apply): Guard behind __cpp_lib_apply.
4218         (make_from_tuple): Guard behind __cpp_lib_make_from_tuple.
4219         * include/std/syncstream: Switch to bits/version.h for
4220         __cpp_lib_syncbuf.  Guard header behind that FTM.
4221         * include/std/string_view: Switch to bits/version.h for
4222         __cpp_lib_{string_{view,contains},constexpr_string_view} and
4223         __cpp_lib_starts_ends_with.
4224         (basic_string_view::starts_with, basic_string_view::ends_with):
4225         Guard behind __cpp_lib_starts_ends_with.
4226         [C++23 && _GLIBCXX_HOSTED && !defined(__cpp_lib_string_contains)]:
4227         Assert as impossible ithout a bug in C++23.
4228         * include/std/string: Switch to bits/version.h for
4229         __cpp_lib_erase_if.
4230         (erase, erase_if): Guard behind __cpp_lib_erase_if.
4231         * include/std/thread: Switch to bits/version.h for
4232         __cpp_lib_jthread.
4233         * include/std/stop_token: Switch to bits/version.h for
4234         __cpp_lib_jthread.
4235         * include/std/spanstream: Switch to bits/version.h for
4236         __cpp_lib_spanstream.  Guard header behind that FTM.
4237         * include/std/span: Switch to bits/version.h for __cpp_lib_span.
4238         Guard header behind that FTM.
4239         * include/std/source_location: Switch to bits/version.h for
4240         __cpp_lib_source_location.  Guard header with that FTM.
4241         * include/std/shared_mutex: Switch to bits/version.h for
4242         __cpp_lib_shared{,_timed}_mutex.
4243         (shared_mutex): Guard behind __cpp_lib_shared_mutex.
4244         * include/std/semaphore: Switch to bits/version.h for
4245         __cpp_lib_semaphore.  Guard header behind that FTM.
4246         * include/std/ranges: Switch to bits/version.h for
4247         __cpp_lib_ranges_{zip,chunk{,_by},slide,join_with},
4248         __cpp_lib_ranges_{repeat_stride,cartesian_product,as_rvalue},
4249         and __cpp_lib_ranges_{as_const,enumerate,iota}.
4250         (ranges::zip et al, ranges::chunk et al, ranges::slide et al)
4251         (ranges::chunk_by et al, ranges::join_with et al)
4252         (ranges::stride et al, ranges::cartesian_product et al)
4253         (ranges::as_rvalue et al, ranges::as_const et al)
4254         (ranges::enumerate et al): Guard behind appropriate FTM.
4255         * include/std/optional: Switch to bits/version.h for
4256         __cpp_lib_optional.  Guard header behind that FTM.
4257         * include/std/numeric: Switch to bits/version.h for
4258         __cpp_lib_{gcd{,_lcm},lcm,constexpr_numeric,interpolate}
4259         and __cpp_lib_parallel_algorithm.
4260         (gcd, lcm): Guard behind __cpp_lib_gcd_lcm.
4261         (midpoint): Guard behind __cpp_lib_interpolate.
4262         * include/std/numbers: Switch to bits/version.h for
4263         __cpp_lib_math_constants.  Guard header behind that FTM.
4264         * include/std/mutex: Switch to bits/version.h for
4265         __cpp_lib_scoped_lock.
4266         (scoped_Lock): Guard behind __cpp_lib_scoped_lock.
4267         * include/std/memory_resource: Switch to bits/version.h for
4268         __cpp_lib_{polymorphic_allocator,memory_resource}.
4269         (synchronized_pool_resource): Guard behind
4270         __cpp_lib_memory_resource >= 201603L.
4271         (polymorphic_allocator): Guard behind
4272         __cpp_lib_polymorphic_allocator.
4273         * include/std/memory: Switch to bits/version.h for
4274         __cpp_lib_{parallel_algorithm,atomic_value_initialization}.
4275         * include/std/list: Switch to bits/version.h for
4276         __cpp_lib_erase_if.
4277         (erase, erase_if): Guard behind __cpp_lib_erase_if.
4278         * include/std/latch: Switch to bits/version.h for __cpp_lib_latch.
4279         Guard header behind that FTM.
4280         * include/std/iterator: Switch to bits/version.h for
4281         __cpp_lib_null_iterators.
4282         * include/std/iomanip: Switch to bits/version.h for
4283         __cpp_lib_quoted_string_io.
4284         (quoted): Guard behind __cpp_lib_quoted_string_io.
4285         * include/std/functional: Switch to bits/version.h for
4286         __cpp_lib_{invoke{,_r},constexpr_functional,bind_front} and
4287         __cpp_lib_{not_fn,booyer_moore_searcher}.
4288         (invoke): Guard behind __cpp_lib_invoke.
4289         (invoke_r): Guard behind __cpp_lib_invoke_r.
4290         (bind_front): Guard behind __cpp_lib_bind_front.
4291         (not_fn): Guard behind __cpp_lib_not_fn.
4292         (boyer_moore_searcher, boyer_moore_horspool_searcher): Guard
4293         definition behind __cpp_lib_boyer_moore_searcher.
4294         * include/std/forward_list: Switch to bits/version.h for
4295         __cpp_lib_erase_if.
4296         (erase, erase_if): Guard behind __cpp_lib_erase_if.
4297         * include/std/format: Switch to bits/version.h for
4298         __cpp_lib_format.  Guard header behind that FTM.
4299         * include/std/filesystem: Switch to bits/version.h for
4300         __cpp_lib_filesystem.  Guard header behind that FTM.
4301         * include/std/expected: Switch to bits/version.h for
4302         __cpp_lib_expected.  Guard header behind it.
4303         * include/std/execution: Switch to bits/version.h for
4304         __cpp_lib_{execution,parallel_algorithm}.  Guard header behind
4305         either.
4306         * include/std/deque: Switch to bits/version.h for
4307         __cpp_lib_erase_if.
4308         (erase, erase_if): Guard behind __cpp_lib_erase_if.
4309         * include/std/coroutine: Switch to bits/version.h for
4310         __cpp_lib_coroutine.  Guard header behind that FTM.
4311         * include/std/concepts: Switch to bits/version.h for
4312         __cpp_lib_concepts.  Guard header behind that FTM.
4313         * include/std/complex: Switch to bits/version.h for
4314         __cpp_lib_{complex_udls,constexpr_complex}.
4315         (operator""if, operator""i, operator""il): Guard behind
4316         __cpp_lib_complex_udls.
4317         * include/std/charconv: Swtich to bits/version.h for
4318         __cpp_lib_{to_chars,constexpr_charconv}.
4319         * include/std/bitset: Switch to bits/version.h for
4320         __cpp_lib_constexpr_bitset.
4321         * include/std/bit: Switch to bits/version.h for
4322         __cpp_lib_{bit_cast,byteswap,bitops,int_pow2,endian}.
4323         (bit_cast): Guard behind __cpp_lib_bit_cast.
4324         (byteswap): Guard behind __cpp_lib_byteswap.
4325         (rotl, rotr, countl_zero, countl_one, countr_zero, countr_one)
4326         (popcount): Guard behind __cpp_lib_bitops.
4327         (has_single_bit, bit_ceil, bit_floor, bit_width): Guard behind
4328         __cpp_lib_int_pow2.
4329         (endian): Guard behind __cpp_lib_endian.
4330         * include/std/barrier: Switch to bits/version.h for
4331         __cpp_lib_barrier.  Guard header behind that FTM.
4332         * include/std/atomic: Switch to bits/version.h for
4333         __cpp_lib_atomic_{is_always_lock_free,float,ref}
4334         and __cpp_lib_lock_free_type_aliases.
4335         (*::is_always_lock_free): Guard behind
4336         __cpp_lib_atomic_is_always_lock_free.
4337         (atomic<float>): Guard behind __cpp_lib_atomic_float.
4338         (atomic_ref): Guard behind __cpp_lib_atomic_ref.
4339         (atomic_signed_lock_free, atomic_unsigned_lock_free): Guard behind
4340         __cpp_lib_atomic_lock_free_type_aliases.
4341         * include/std/array: Switch to bits/version.h for
4342         __cpp_lib_to_array.
4343         (to_array): Guard behind __cpp_lib_to_array.
4344         * include/std/any: Switch to bits/version.h for __cpp_lib_any.
4345         Guard header behind that FTM.
4346         * include/std/algorithm: Switch to bits/version.h for
4347         __cpp_lib_parallel_algorithm.
4348         * include/c_global/cstddef: Switch to bits/version.h for
4349         __cpp_lib_byte.
4350         (byte): Guard behind __cpp_lib_byte.
4351         * include/c_global/cmath: Switch to bits/version.h for
4352         __cpp_lib_{hypot,interpolate}.
4353         (hypot3): Guard behind __cpp_lib_hypot.
4354         (lerp): Guard behind __cpp_lib_interpolate.
4355         * include/c_compatibility/stdatomic.h: Switch to
4356         bits/stl_version.h for __cpp_lib_atomic.  Guard header behind that
4357         FTM.
4358         * include/bits/utility.h: Switch to bits/version.h for
4359         __cpp_lib_{tuple_element_t,integer_sequence,ranges_zip}.
4360         (tuple_element_t): Guard behind __cpp_lib_tuple_element_t.
4361         (integer_sequence et al): Guard behind __cpp_lib_integer_sequence.
4362         * include/bits/uses_allocator_args.h: Switch to bits/version.h for
4363         __cpp_lib_make_obj_using_allocator.  Guard header behind that FTM.
4364         * include/bits/unordered_map.h: Switch to bits/version.h for
4365         __cpp_lib_unordered_map_try_emplace.
4366         (try_emplace): Guard behind __cpp_lib_unordered_map_try_emplace.
4367         * include/bits/unique_ptr.h: Switch to bits/version.h for
4368         __cpp_lib_{constexpr_memory,make_unique}.
4369         (make_unique): Guard behind __cpp_lib_make_unique.
4370         * include/bits/stl_vector.h: Switch to bits/version.h for
4371         __cpp_lib_constexpr_vector.
4372         * include/bits/stl_uninitialized.h: Switch to bits/version.h for
4373         __cpp_lib_raw_memory_algorithms.
4374         (uninitialized_default_construct)
4375         (uninitialized_default_construct_n, uninitialized_move)
4376         (uninitialized_move_n, uninitialized_value_construct)
4377         (uninitialized_value_construct_n): Guard behind
4378         __cpp_lib_raw_memory_algorithms.
4379         * include/bits/stl_tree.h: Switch to bits/version.h for
4380         __cpp_lib_generic_associative_lookup.
4381         * include/bits/stl_stack.h: Switch to bits/version.h for
4382         __cpp_lib_adaptor_iterator_pair_constructor.
4383         (stack): Guard iterator-pair constructor behind
4384         __cpp_lib_adaptor_iterator_pair_constructor.
4385         * include/bits/stl_queue.h: Switch to bits/version.h for
4386         __cpp_lib_adaptor_iterator_pair_constructor.
4387         (queue): Guard iterator-pair constructor behind
4388         __cpp_lib_adaptor_iterator_pair_constructor.
4389         * include/bits/stl_pair.h: Switch to bits/version.h for
4390         __cpp_lib_{concepts,tuples_by_type}.
4391         (get): Guard type-getting overloads behind
4392         __cpp_lib_tuples_by_type.
4393         * include/bits/stl_map.h: Switch to bits/version.h for
4394         __cpp_lib_map_try_emplace.
4395         (map<>::try_emplace): Guard behind __cpp_lib_map_try_emplace.
4396         * include/bits/stl_list.h: Switch to bits/version.h for
4397         __cpp_lib_list_remove_return_type.
4398         (__remove_return_type, _GLIBCXX_LIST_REMOVE_RETURN_TYPE_TAG)
4399         [C++20]: guard behind __cpp_lib_list_remove_return_type instead.
4400         * include/bits/stl_iterator.h: Switch to bits/version.h for
4401         __cpp_lib_{constexpr_iterator,array_constexpr} and
4402         __cpp_lib_{make_reverse_iterator,move_iterator_concept}.
4403         (make_reverse_iterator): Guard behind
4404         __cpp_lib_make_reverse_iterator.
4405         (iterator_concept et al): Guard __cpp_lib_move_iterator_concept
4406         changes behind that FTM.
4407         * include/bits/stl_function.h: Switch to bits/version.h for
4408         __cpp_lib_transparent_operators.
4409         (equal_to, not_equal_to, greater, less, greater_equal)
4410         (less_equal, bit_and, bit_or, bit_xor, bit_not, logical_and)
4411         (logical_or, logical_not, plus, minus, multiplies, divides)
4412         (modulus, negate): Guard '= void' fwdecls behind
4413         __cpp_lib_transparent_operators.
4414         (plus<void>, minus<void>, multiplies<void>, divides<void>)
4415         (modulus<void>, negate<void>, logical_and<void>, logical_or<void>)
4416         (logical_not<void>, bit_and<void>, bit_or<void>, bit_xor<void>)
4417         (equal_to<void>, not_equal_to<void>, greater<void>, less<void>)
4418         (greater_equal<void>, less_equal<void>, bit_not<void>)
4419         (__has_is_transparent): Guard behind
4420         __cpp_lib_transparent_operators.
4421         * include/bits/stl_algobase.h: Switch to bits/version.h for
4422         __cpp_lib_robust_nonmodifying_seq_ops.
4423         (robust equal, mismatch): Guard behind
4424         __cpp_lib_nonmember_container_access.
4425         * include/bits/stl_algo.h: Swtich to bits/version.h for
4426         __cpp_lib_{clamp,sample}.
4427         (clamp): Guard behind __cpp_lib_clamp.
4428         (sample): Guard behind __cpp_lib_sample.
4429         * include/bits/specfun.h: Switch to bits/version.h for
4430         __cpp_lib_math_special_functions and __STDCPP_MATH_SPEC_FUNCS__.
4431         * include/bits/shared_ptr_base.h: Switch to bits/version.h for
4432         __cpp_lib_{smart_ptr_for_overwrite,shared_ptr_arrays}.
4433         (_Sp_overwrite_tag): Guard behind
4434         __cpp_lib_smart_ptr_for_overwrite.
4435         * include/bits/shared_ptr_atomic.h: Switch to bits/version.h for
4436         __cpp_lib_atomic_shared_ptr.
4437         * include/bits/shared_ptr.h: Switch to bits/version.h for
4438         __cpp_lib_{enable_shared_from_this,shared_ptr_weak_type}.
4439         (shared_ptr<T>::weak_type): Guard behind
4440         __cpp_lib_shared_ptr_weak_type.
4441         (enable_shared_from_this<T>::weak_from_this): Guard behind
4442         __cpp_lib_enable_shared_from_this.
4443         * include/bits/ranges_cmp.h: Switch to bits/version.h for
4444         __cpp_lib_ranges.
4445         * include/bits/ranges_algo.h: Switch to bits/version.h for
4446         __cpp_lib_{shift,ranges_{contains,find_last,fold,iota}}.
4447         * include/bits/range_access.h: Switch to bits/version.h for
4448         __cpp_lib_nonmember_container_access
4449         (size, empty, data): Guard behind
4450         __cpp_lib_nonmember_container_access.
4451         (ssize): Guard behind __cpp_lib_ssize.
4452         * include/bits/ptr_traits.h: Switch to bits/version.h. for
4453         __cpp_lib_{constexpr_memory,to_address}.
4454         (to_address): Guard behind __cpp_lib_to_address.
4455         * include/bits/node_handle.h: Switch to bits/version.h for
4456         __cpp_lib_node_extract.  Guard header behind that FTM.
4457         * include/bits/move_only_function.h: Switch to bits/version.h for
4458         __cpp_lib_move_only_function.  Guard header behind that FTM.
4459         * include/bits/move.h: Switch to bits/version.h for
4460         __cpp_lib_addressof_constexpr.
4461         * include/bits/ios_base.h: Switch to bits/version.h for
4462         __cpp_lib_ios_noreplace.
4463         (noreplace): Guard with __cpp_lib_ios_noreplace.
4464         * include/bits/hashtable.h: Switch to bits/version.h for
4465         __cpp_lib_generic_unordered_lookup.
4466         (_M_equal_range_tr, _M_count_tr, _M_find_tr): Guard behind
4467         __cpp_lib_generic_unordered_lookup.
4468         * include/bits/forward_list.h: Switch to bits/version.h for
4469         __cpp_lib_list_remove_return_type.
4470         (__remove_return_type): Guard behind
4471         __cpp_lib_list_remove_return_type.
4472         * include/bits/erase_if.h: Switch to bits/version.h for
4473         __cpp_lib_erase_if.
4474         * include/bits/cow_string.h: Switch to bits/version.h for
4475         __cpp_lib_constexpr_string.
4476         * include/bits/chrono.h: Swtich to bits/version.h for
4477         __cpp_lib_chrono{,_udls}.
4478         (ceil): Guard behind __cpp_lib_chrono.
4479         (operator""ns et al): Guard behind __cpp_lib_chrono_udls.
4480         * include/bits/char_traits.h: Switch to bits/version.h for
4481         __cpp_lib_constexpr_char_traits.
4482         * include/bits/basic_string.h: Switch to bits/version.h for
4483         __cpp_lib_{constexpr_string,string_{resize_and_overwrite,udls}}.
4484         (resize_and_overwrite): Guard behind
4485         __cpp_lib_string_resize_and_overwrite.
4486         (operator""s): Guard behind __cpp_lib_string_udls.
4487         * include/bits/atomic_wait.h: Switch to bits/version.h for
4488         __cpp_lib_atomic_wait.  Guard header behind that FTM.
4489         * include/bits/atomic_base.h: Switch to bits/version.h for
4490         __cpp_lib_atomic_value_initialization and
4491         __cpp_lib_atomic_flag_test.
4492         (atomic_flag::test): Guard behind __cpp_lib_atomic_flag_test,
4493         rather than C++20.
4494         * include/bits/allocator.h: Switch to bits/version.h for
4495         __cpp_lib_incomplete_container_elements.
4496         * include/bits/alloc_traits.h: Switch to using bits/version.h for
4497         __cpp_lib_constexpr_dynamic_alloc and
4498         __cpp_lib_allocator_traits_is_always_equal.
4499         * include/bits/align.h: Switch to bits/version.h for defining
4500         __cpp_lib_assume_aligned.
4501         (assume_aligned): Guard with __cpp_lib_assume_aligned.
4502         * include/bits/algorithmfwd.h: Switch to bits/version.h for
4503         defining __cpp_lib_constexpr_algorithms.
4504         * include/std/stacktrace: Switch to bits/version.h for
4505         __cpp_lib_stacktrace.  Guard header behind that FTM.
4506         * testsuite/23_containers/array/tuple_interface/get_neg.cc:
4507         Update line numbers.
4508
4509 2023-08-16  Arsen Arsenović  <arsen@aarsen.me>
4510
4511         * include/Makefile.am (bits_freestanding): Add version.h.
4512         (allcreated): Add version.h.
4513         (${bits_srcdir}/version.h): New rule.  Regenerates
4514         version.h out of version.{def,tpl}.
4515         * include/Makefile.in: Regenerate.
4516         * include/bits/version.def: New file.  Declares a list of
4517         all feature test macros, their values and their preconditions.
4518         * include/bits/version.tpl: New file.  Turns version.def
4519         into a sequence of #if blocks.
4520         * include/bits/version.h: New file.  Generated from
4521         version.def.
4522         * include/std/version: Replace with a __glibcxx_want_all define
4523         and bits/version.h include.
4524
4525 2023-08-14  Paul Dreik  <gccpatches@pauldreik.se>
4526
4527         PR libstdc++/110860
4528         * include/std/format (__formatter_fp::format): Use frexp instead
4529         of log10.
4530
4531 2023-08-12  Ken Matsui  <kmatsui@gcc.gnu.org>
4532
4533         * include/std/type_traits (true_type): Use __bool_constant
4534         instead.
4535         (false_type): Likewise.
4536         (bool_constant): Likewise.
4537
4538 2023-08-11  Jonathan Wakely  <jwakely@redhat.com>
4539
4540         PR libstdc++/110990
4541         * include/std/format (_Seq_sink::get): Only call _M_overflow if
4542         its precondition is met.
4543         (_Iter_sink::_M_finish): Likewise.
4544         (_Iter_sink<C, ContigIter>::_M_overflow): Only switch to the
4545         internal buffer after running out of space.
4546         (_Iter_sink<C, ContigIter>::_M_finish): Do not use _M_overflow.
4547         (_Counting_sink::count): Likewise.
4548         * testsuite/std/format/functions/format_to_n.cc: Check cases
4549         where the output fits into the buffer.
4550
4551 2023-08-11  Jonathan Wakely  <jwakely@redhat.com>
4552
4553         PR libstdc++/104167
4554         * include/bits/chrono_io.h (operator|=, operator|): Add noexcept
4555         to _ChronoParts operators.
4556         (from_stream, parse): Define new functions.
4557         (__detail::_Parse, __detail::_Parser): New class templates.
4558         * include/std/chrono (__cpp_lib_chrono): Define to 201907L for
4559         C++20.
4560         * include/std/version (__cpp_lib_chrono): Likewise.
4561         * testsuite/20_util/duration/arithmetic/constexpr_c++17.cc:
4562         Adjust expected value of feature test macro.
4563         * testsuite/20_util/duration/io.cc: Test parsing.
4564         * testsuite/std/time/clock/file/io.cc: Likewise.
4565         * testsuite/std/time/clock/gps/io.cc: Likewise.
4566         * testsuite/std/time/clock/system/io.cc: Likewise.
4567         * testsuite/std/time/clock/tai/io.cc: Likewise.
4568         * testsuite/std/time/clock/utc/io.cc: Likewise.
4569         * testsuite/std/time/day/io.cc: Likewise.
4570         * testsuite/std/time/month/io.cc: Likewise.
4571         * testsuite/std/time/month_day/io.cc: Likewise.
4572         * testsuite/std/time/weekday/io.cc: Likewise.
4573         * testsuite/std/time/year/io.cc: Likewise.
4574         * testsuite/std/time/year_month/io.cc: Likewise.
4575         * testsuite/std/time/year_month_day/io.cc: Likewise.
4576         * testsuite/std/time/syn_c++20.cc: Check value of macro and for
4577         the existence of parse and from_stream in namespace chrono.
4578         * testsuite/std/time/clock/local/io.cc: New test.
4579         * testsuite/std/time/parse.cc: New test.
4580
4581 2023-08-11  Jonathan Wakely  <jwakely@redhat.com>
4582
4583         PR libstdc++/110860
4584         * include/std/format (__formatter_fp::format): Do not call log10
4585         with zero values.
4586
4587 2023-08-11  Jonathan Wakely  <jwakely@redhat.com>
4588
4589         * python/libstdcxx/v6/printers.py (StdChronoCalendarPrinter):
4590         Check for out-of-range month an weekday indices.
4591         * testsuite/libstdc++-prettyprinters/chrono.cc: Check invalid
4592         month and weekday values.
4593
4594 2023-08-11  Jonathan Wakely  <jwakely@redhat.com>
4595
4596         * include/bits/stl_iterator.h (__clamped_iter_cat_t): Remove.
4597
4598 2023-08-10  Jonathan Wakely  <jwakely@redhat.com>
4599
4600         PR libstdc++/110974
4601         * include/std/format (_Spec::_S_parse_width_or_precision): Check
4602         for empty range before dereferencing iterator.
4603         * testsuite/std/format/string.cc: Check for expected exception.
4604         Fix expected exception message in test_pr110862() and actually
4605         call it.
4606
4607 2023-08-10  Jonathan Wakely  <jwakely@redhat.com>
4608
4609         PR libstdc++/110968
4610         * include/std/format (__formatter_fp::format): Check return
4611         value of _M_localize.
4612         * testsuite/std/format/functions/format.cc: Check classic
4613         locale.
4614
4615 2023-08-10  Jonathan Wakely  <jwakely@redhat.com>
4616
4617         PR libstdc++/110970
4618         * include/bits/stl_iterator.h (__detail::__move_iter_cat): Use
4619         __iter_category_t.
4620         (iterator_traits<common_iterator<I, S>>::_S_iter_cat): Likewise.
4621         (__detail::__basic_const_iterator_iter_cat): Likewise.
4622         * include/bits/stl_iterator_base_types.h (__iterator_category_t):
4623         Rename to __iter_category_t.
4624
4625 2023-08-09  Jonathan Wakely  <jwakely@redhat.com>
4626
4627         * include/bits/chrono.h (duration_cast): Do not use braces
4628         around statements for C++11 constexpr rules.
4629         * include/bits/stl_algobase.h (__lg): Rewrite as a single
4630         statement for C++11 constexpr rules.
4631         * include/experimental/bits/fs_path.h (path::string): Use
4632         _GLIBCXX17_CONSTEXPR not _GLIBCXX_CONSTEXPR for 'if constexpr'.
4633         * include/std/charconv (__to_chars_8): Initialize variable for
4634         C++17 constexpr rules.
4635
4636 2023-08-09  Jonathan Wakely  <jwakely@redhat.com>
4637
4638         * include/bits/list.tcc (list::sort(Cmp)): Fix -Wsign-compare
4639         warning for loop condition.
4640
4641 2023-08-09  Jonathan Wakely  <jwakely@redhat.com>
4642
4643         * include/std/complex: Add diagnostic pragma for clang.
4644
4645 2023-08-09  Jonathan Wakely  <jwakely@redhat.com>
4646
4647         * include/bits/shared_ptr_atomic.h (atomic): Change class-head
4648         to struct.
4649         * include/bits/stl_tree.h (_Rb_tree_merge_helper): Change
4650         class-head to struct in friend declaration.
4651         * include/std/chrono (tzdb_list::_Node): Likewise.
4652         * include/std/future (_Task_state_base, _Task_state): Likewise.
4653         * include/std/scoped_allocator (__inner_type_impl): Likewise.
4654         * include/std/valarray (_BinClos, _SClos, _GClos, _IClos)
4655         (_ValFunClos, _RefFunClos): Change class-head to struct.
4656
4657 2023-08-09  Jonathan Wakely  <jwakely@redhat.com>
4658
4659         * include/bits/alloc_traits.h (allocate): Add [[maybe_unused]]
4660         attribute.
4661         * include/bits/regex_executor.tcc: Remove name of unused
4662         parameter.
4663         * include/bits/shared_ptr_atomic.h (atomic_is_lock_free):
4664         Likewise.
4665         * include/bits/stl_uninitialized.h: Likewise.
4666         * include/bits/streambuf_iterator.h (operator==): Likewise.
4667         * include/bits/uses_allocator.h: Likewise.
4668         * include/c_global/cmath (isfinite, isinf, isnan): Likewise.
4669         * include/std/chrono (zoned_time): Likewise.
4670         * include/std/future (__future_base::_S_allocate_result):
4671         Likewise.
4672         (packaged_task): Likewise.
4673         * include/std/optional (_Optional_payload_base): Likewise.
4674         * include/std/scoped_allocator (__inner_type_impl): Likewise.
4675         * include/std/tuple (_Tuple_impl): Likewise.
4676
4677 2023-08-09  Jonathan Wakely  <jwakely@redhat.com>
4678
4679         * include/bits/new_allocator.h (__new_allocator): Define copy
4680         assignment operator as defaulted.
4681         * include/std/complex (complex<float>, complex<double>)
4682         (complex<long double>): Define copy constructor as defaulted.
4683
4684 2023-08-09  Jonathan Wakely  <jwakely@redhat.com>
4685
4686         * include/std/format: Fix some warnings.
4687         (__format::__write(Ctx&, basic_string_view<CharT>)): Remove
4688         unused function template.
4689
4690 2023-08-07  Jonathan Wakely  <jwakely@redhat.com>
4691
4692         PR libstdc++/110860
4693         * include/std/format (__formatter_fp::format): Do not use
4694         __builtin_abs and __builtin_log10 with arbitrary floating-point
4695         types.
4696
4697 2023-08-07  Jonathan Wakely  <jwakely@redhat.com>
4698
4699         PR libstdc++/110917
4700         * include/std/format (__format::_Iter_sink<CharT, OutIter>):
4701         Constrain partial specialization for contiguous iterators to
4702         require the value type to be CharT.
4703         * testsuite/std/format/functions/format_to.cc: New test.
4704
4705 2023-08-07  Jonathan Wakely  <jwakely@redhat.com>
4706
4707         PR libstdc++/110862
4708         * include/std/format (_Scanner::_M_on_replacement_field):
4709         Check for expected '}' before incrementing iterator.
4710         * testsuite/std/format/string.cc: Check "{0:{0}" format string.
4711
4712 2023-08-07  Nick Alcock  <nick.alcock@oracle.com>
4713
4714         * configure: Regenerate.
4715
4716 2023-08-07  Alan Modra  <amodra@gmail.com>
4717
4718         * configure: Regenerate.
4719
4720 2023-08-07  Alexander von Gluck IV  <kallisti5@unixzen.com>
4721
4722         * configure: Regenerate.
4723
4724 2023-08-07  Nick Alcock  <nick.alcock@oracle.com>
4725
4726         * configure: Regenerate.
4727
4728 2023-08-07  Nick Alcock  <nick.alcock@oracle.com>
4729
4730         * configure: Regenerate.
4731
4732 2023-08-07  H.J. Lu  <hjl.tools@gmail.com>
4733
4734         * configure: Regenerate.
4735
4736 2023-08-07  H.J. Lu  <hjl.tools@gmail.com>
4737
4738         * configure: Regenerate.
4739
4740 2023-08-06  François Dumont  <fdumont@gcc.gnu.org>
4741
4742         * config/abi/pre/gnu-versioned-namespace.ver: Add __cxa_call_terminate
4743         symbol export.
4744
4745 2023-07-30  François Dumont  <fdumont@gcc.gnu.org>
4746
4747         * src/c++11/compatibility-ldbl-facets-aliases.h: Replace #define with
4748         proper #error.
4749         * src/c++11/locale-inst-monetary.h: Likewise.
4750         * src/c++11/locale-inst-numeric.h: Likewise.
4751
4752 2023-07-27  Jonathan Wakely  <jwakely@redhat.com>
4753
4754         PR libstdc++/108046
4755         * include/std/format (__formatter_fp::format): Ensure __expc is
4756         always set for all presentation types. Set __z correctly for
4757         zero precision.
4758         * testsuite/std/format/functions/format.cc: Check problem cases.
4759
4760 2023-07-26  Jonathan Wakely  <jwakely@redhat.com>
4761
4762         PR libstdc++/110807
4763         * testsuite/23_containers/vector/bool/110807.cc: Require c++11.
4764
4765 2023-07-26  Jonathan Wakely  <jwakely@redhat.com>
4766
4767         PR libstdc++/110807
4768         * include/bits/stl_bvector.h (vector(const vector&)): Access
4769         iterators before allocating.
4770         * include/bits/vector.tcc (vector<bool>::_M_insert_range):
4771         Likewise.
4772         * testsuite/23_containers/vector/bool/110807.cc: New test.
4773
4774 2023-07-26  Jonathan Wakely  <jwakely@redhat.com>
4775
4776         * include/bits/algorithmfwd.h (random_shuffle): Add deprecated
4777         attribute.
4778         * include/bits/stl_algo.h (random_shuffle): Correct comments.
4779         * testsuite/25_algorithms/random_shuffle/1.cc: Disable
4780         deprecated warnings.
4781         * testsuite/25_algorithms/random_shuffle/59603.cc: Likewise.
4782         * testsuite/25_algorithms/random_shuffle/moveable.cc: Likewise.
4783         * testsuite/25_algorithms/random_shuffle/deprecated.cc: New
4784         test.
4785
4786 2023-07-26  Nathaniel Shead  <nathanieloshead@gmail.com>
4787
4788         * testsuite/25_algorithms/equal/constexpr_neg.cc: Update diagnostic
4789         locations.
4790         * testsuite/26_numerics/gcd/105844.cc: Likewise.
4791         * testsuite/26_numerics/lcm/105844.cc: Likewise.
4792
4793 2023-07-24  Deev Patel  <pateldeev@nevada.unr.edu>
4794
4795         * include/std/format (_Formatting_scanner::_M_on_chars): Add
4796         missing constexpr specifier.
4797         (_Formatting_scanner::_M_format_arg): Likewise.
4798
4799 2023-07-24  Jonathan Wakely  <jwakely@redhat.com>
4800
4801         PR libstdc++/110653
4802         * include/bits/basic_string.h [!HAVE_STOF] (stof): Do not
4803         throw an exception for zero result.
4804         [HAVE_BROKEN_STRTOLD] (stold): Do not use strtold.
4805
4806 2023-07-19  Jonathan Wakely  <jwakely@redhat.com>
4807
4808         PR libstdc++/110077
4809         * src/c++17/floating_from_chars.cc (from_chars): Only define
4810         _Float128 overload when using __strfromf128.
4811
4812 2023-07-19  Jonathan Wakely  <jwakely@redhat.com>
4813
4814         PR libstdc++/110593
4815         * include/bits/chrono.h (duration): Improve static assert
4816         messages.
4817         (__is_ratio): Move to ...
4818         * include/std/ratio (__is_ratio): ... here.
4819         (__is_ratio_v): New variable template and partial
4820         specialization.
4821         (__are_both_ratios): New function template.
4822         (__ratio_multiply, ratio_equal, ratio_less, __ratio_add):
4823         Add static assertion.
4824         * testsuite/20_util/ratio/requirements/type_constraints.cc:
4825         New test.
4826         * testsuite/20_util/duration/requirements/typedefs_neg1.cc:
4827         Adjust expected error.
4828         * testsuite/20_util/duration/requirements/typedefs_neg2.cc:
4829         Likewise.
4830
4831 2023-07-19  Jonathan Wakely  <jwakely@redhat.com>
4832
4833         * include/bits/chrono_io.h (__formatter_chrono::_M_format):
4834         Do not set __is_neg for hh_mm_ss before calling
4835         _M_format_to_ostream. Change __print_sign lambda to only check
4836         __is_neg for durations and hh_mm_ss types.
4837         (__formatter_chrono::_M_format_to_ostream): Only check __is_neg
4838         for duration types.
4839         * testsuite/std/time/hh_mm_ss/io.cc: Check negative values.
4840
4841 2023-07-19  Jonathan Wakely  <jwakely@redhat.com>
4842
4843         PR libstdc++/110719
4844         * include/bits/chrono_io.h (__formatter_chrono::_S_floor_seconds):
4845         Handle duration and hh_mm_ss.
4846         * testsuite/20_util/duration/io.cc: Check locale-specific
4847         formats.
4848         * testsuite/std/time/hh_mm_ss/io.cc: Likewise.
4849
4850 2023-07-19  Jonathan Wakely  <jwakely@redhat.com>
4851
4852         * include/std/format (__write_padded): Initialize first element
4853         of array to avoid a -Wmaybe-uninitialized warning.
4854
4855 2023-07-19  Jonathan Wakely  <jwakely@redhat.com>
4856
4857         PR libstdc++/110719
4858         * include/bits/chrono_io.h (__formatter_chrono::_M_parse): Fix
4859         allowed modifiers for %z and %Z. Fix -Wparentheses and
4860         -Wnarrowing warnings.
4861         (__formatter_chrono::_M_format): Call new functions for %d, %e,
4862         %H, %I, %m and %M.
4863         (__formatter_chrono::_M_c): Use _S_floor_seconds to remove
4864         subsecond precision.
4865         (__formatter_chrono::_M_C_y_Y): Use _M_locale_fmt to handle
4866         modifiers.
4867         (__formatter_chrono::_M_e): Replace with _M_d_e and use
4868         _M_locale_fmt.
4869         (__formatter_chrono::_M_I): Replace with _M_H_I and use
4870         _M_locale_fmt.
4871         (__formatter_chrono::_M_m): New function.
4872         (__formatter_chrono::_M_M): New function.
4873         (__formatter_chrono::_M_r): Use _M_locale_fmt.
4874         (__formatter_chrono::_M_S): Likewise.
4875         (__formatter_chrono::_M_u_w): Likewise.
4876         (__formatter_chrono::_M_U_V_W): Likewise.
4877         (__formatter_chrono::_M_X): Use _S_floor_seconds.
4878         (__formatter_chrono::_M_Z): Fix untested branch for wchar_t.
4879         (__formatter_chrono::_S_altnum): Remove function.
4880         (__formatter_chrono::_S_dd_zero_fill): Remove function.
4881         (__formatter_chrono::_S_floor_seconds): New function.
4882         (__formatter_chrono::_M_locale_fmt): New function.
4883         * testsuite/std/time/clock/system/io.cc: Adjust expected output
4884         for locale-specific formats and check modified formats.
4885         * testsuite/std/time/clock/utc/io.cc: Likewise.
4886         * testsuite/std/time/zoned_time/io.cc: New test.
4887
4888 2023-07-19  Jonathan Wakely  <jwakely@redhat.com>
4889
4890         PR libstdc++/110708
4891         * include/bits/chrono_io.h (__formatter_chrono::_M_parse): Only
4892         allow a single modifier.
4893         * testsuite/std/time/format.cc: Check multiple modifiers.
4894
4895 2023-07-19  Jonathan Wakely  <jwakely@redhat.com>
4896
4897         PR libstdc++/110653
4898         * testsuite/21_strings/basic_string/numeric_conversions/char/stod.cc:
4899         Remove dg-require-string-conversions.
4900         * testsuite/21_strings/basic_string/numeric_conversions/char/stof.cc:
4901         Likewise.
4902         * testsuite/21_strings/basic_string/numeric_conversions/char/stoi.cc:
4903         Likewise.
4904         * testsuite/21_strings/basic_string/numeric_conversions/char/stol.cc:
4905         Likewise.
4906         * testsuite/21_strings/basic_string/numeric_conversions/char/stoul.cc:
4907         Likewise.
4908
4909 2023-07-19  Jonathan Wakely  <jwakely@redhat.com>
4910
4911         PR libstdc++/110653
4912         * include/bits/basic_string.h [!_GLIBCXX_HAVE_STRTOF] (stof):
4913         Define in terms of std::stod.
4914
4915 2023-07-19  Jonathan Wakely  <jwakely@redhat.com>
4916
4917         PR libstdc++/110653
4918         * include/bits/basic_string.h [_GLIBCXX_HAVE_STRTOF] (stof):
4919         Define.
4920         [_GLIBCXX_HAVE_STRTOLD] (stold): Define.
4921         * include/c_global/cstdlib [_GLIBCXX_HAVE_STRTOF] (strtof):
4922         Declare in namespace std.
4923         [_GLIBCXX_HAVE_STRTOLD] (strtold): Likewise.
4924
4925 2023-07-13  Jonathan Wakely  <jwakely@redhat.com>
4926
4927         PR libstdc++/110653
4928         * include/bits/basic_string.h (stoi, stol, stoul, stod): Do not
4929         depend on _GLIBCXX_USE_C99_STDLIB.
4930         [__LONG_WIDTH__ == __LONG_LONG_WIDTH__] (stoll, stoull): Define
4931         in terms of stol and stoul respectively.
4932         [__DBL_MANT_DIG__ == __LDBL_MANT_DIG__] (stold): Define in terms
4933         of stod.
4934
4935 2023-07-12  Jonathan Wakely  <jwakely@redhat.com>
4936
4937         PR libstdc++/95048
4938         * testsuite/27_io/filesystem/path/construct/95048.cc: Check
4939         conversions to wide strings.
4940         * testsuite/experimental/filesystem/path/construct/95048.cc:
4941         Likewise.
4942
4943 2023-07-12  Jonathan Wakely  <jwakely@redhat.com>
4944
4945         * config/io/basic_file_stdio.cc: Define LFS macros.
4946         (__basic_file<char>::open): Use fopen unconditionally.
4947         (get_file_offset): Use lseek unconditionally.
4948         (__basic_file<char>::seekoff): Likewise.
4949         (__basic_file<char>::showmanyc): Use fstat unconditionally.
4950
4951 2023-07-12  Jonathan Wakely  <jwakely@redhat.com>
4952
4953         PR libstdc++/110574
4954         * acinclude.m4 (GLIBCXX_CHECK_LFS): Check for fseeko and ftello
4955         and define _GLIBCXX_USE_FSEEKO_FTELLO.
4956         * config.h.in: Regenerate.
4957         * configure: Regenerate.
4958         * config/io/basic_file_stdio.cc (xwrite) [_GLIBCXX_USE_STDIO_PURE]:
4959         Check for fwrite error correctly.
4960         (__basic_file<char>::xsgetn) [_GLIBCXX_USE_STDIO_PURE]: Check for
4961         fread error correctly.
4962         (get_file_offset): New function.
4963         (__basic_file<char>::seekoff) [_GLIBCXX_USE_STDIO_PURE]: Use
4964         fseeko if available. Use get_file_offset instead of return value
4965         of fseek.
4966         (__basic_file<char>::showmanyc): Use get_file_offset.
4967
4968 2023-07-12  Ken Matsui  <kmatsui@gcc.gnu.org>
4969
4970         * include/std/type_traits (__make_unsigned_selector): Use
4971         __is_enum built-in trait.
4972         (__make_signed_selector): Likewise.
4973         (__underlying_type_impl): Likewise.
4974
4975 2023-07-06  Tianqiang Shuai  <1101282468@qq.com>
4976
4977         * config/io/basic_file_stdio.cc (xwrite) [USE_STDIO_PURE]: Fix
4978         first argument.
4979
4980 2023-07-06  Jonathan Wakely  <jwakely@redhat.com>
4981
4982         PR libstdc++/110574
4983         * doc/xml/manual/configure.xml: Describe stdio_pure argument to
4984         --enable-cstdio.
4985         * doc/html/manual/configure.html: Regenerate.
4986
4987 2023-07-05  Thomas Rodgers  <trodgers@redhat.com>
4988
4989         * testsuite/25_algorithms/pstl/alg_sorting/set.cc: Delete
4990         file.
4991         * testsuite/25_algorithms/pstl/alg_sorting/set_difference.cc:
4992         New file.
4993         * testsuite/25_algorithms/pstl/alg_sorting/set_intersection.cc:
4994         Likewise.
4995         * testsuite/25_algorithms/pstl/alg_sorting/set_symmetric_difference.cc:
4996         Likewise.
4997         * testsuite/25_algorithms/pstl/alg_sorting/set_union.cc:
4998         Likewise.
4999         * testsuite/25_algorithms/pstl/alg_sorting/set_util.h:
5000         Likewise.
5001
5002 2023-07-05  Jonathan Wakely  <jwakely@redhat.com>
5003
5004         * testsuite/23_containers/forward_list/debug/iterator1_neg.cc:
5005         Skip as UNSUPPORTED for C++98 mode.
5006         * testsuite/23_containers/forward_list/debug/iterator3_neg.cc:
5007         Likewise.
5008
5009 2023-07-05  Jonathan Wakely  <jwakely@redhat.com>
5010
5011         PR libstdc++/110542
5012         * include/bits/stl_uninitialized.h (__uninitialized_default_n):
5013         Do not use std::fill_n during constant evaluation.
5014
5015 2023-07-05  Jonathan Wakely  <jwakely@redhat.com>
5016
5017         * include/bits/vector.tcc (_M_default_append): Replace try-block
5018         with RAII types.
5019
5020 2023-07-05  Jonathan Wakely  <jwakely@redhat.com>
5021
5022         * include/bits/iterator_concepts.h (projected): Add typename.
5023
5024 2023-07-03  Jonathan Wakely  <jwakely@redhat.com>
5025
5026         * testsuite/27_io/headers/iosfwd/synopsis.cc: Make wsyncbuf and
5027         wosyncstream depend on _GLIBCXX_USE_CXX11_ABI.
5028
5029 2023-07-03  Jonathan Wakely  <jwakely@redhat.com>
5030
5031         * include/pstl/pstl_config.h (_PSTL_PRAGMA_SIMD_SCAN,
5032         _PSTL_PRAGMA_SIMD_INCLUSIVE_SCAN, _PSTL_PRAGMA_SIMD_EXCLUSIVE_SCAN):
5033         Define to OpenMP 5.0 pragmas even for GCC 10.0+.
5034         (_PSTL_UDS_PRESENT): Define to 1 for GCC 10.0+.
5035
5036 2023-07-03  Jonathan Wakely  <jwakely@redhat.com>
5037
5038         * include/bits/alloc_traits.h (_Destroy): Qualify call.
5039         * include/bits/stl_construct.h (_Destroy, _Destroy_n): Likewise.
5040         * testsuite/23_containers/vector/cons/destroy-adl.cc: New test.
5041
5042 2023-07-03  Iain Sandoe  <iain@sandoe.co.uk>
5043
5044         * testsuite/lib/libstdc++.exp: Remove additional flag handled
5045         by Darwin specs.
5046
5047 2023-06-30  Jonathan Wakely  <jwakely@redhat.com>
5048
5049         PR libstdc++/110432
5050         * acinclude.m4 (GLIBCXX_CHECK_INIT_PRIORITY): New.
5051         * config.h.in: Regenerate.
5052         * configure: Regenerate.
5053         * configure.ac: Use GLIBCXX_CHECK_INIT_PRIORITY.
5054         * include/std/iostream: Use new autoconf macro as well as
5055         __has_attribute.
5056         * src/c++98/ios_base_init.h: Use new autoconf macro instead of
5057         __has_attribute.
5058
5059 2023-06-30  Jonathan Wakely  <jwakely@redhat.com>
5060
5061         * src/c++11/random.cc (random_device::_M_init): Add maybe_unused
5062         attribute.
5063
5064 2023-06-30  Jonathan Wakely  <jwakely@redhat.com>
5065
5066         PR libstdc++/105081
5067         * src/c++11/random.cc (random_device::_M_init): Throw
5068         std::system_error when the requested device is a valid token but
5069         not available at runtime.
5070
5071 2023-06-30  Hans-Peter Nilsson  <hp@axis.com>
5072
5073         PR libstdc++/108672
5074         * include/pstl/unseq_backend_simd.h (__simd_or): Re-apply using
5075         __INT32_TYPE__ instead of int32_t.
5076
5077 2023-06-29  Jonathan Wakely  <jwakely@redhat.com>
5078
5079         * src/c++20/tzdb.cc (USE_ATOMIC_SHARED_PTR): Define consistently
5080         with USE_ATOMIC_LIST_HEAD.
5081         (list_mutex): Replace global object with function. Use local
5082         static object when std::mutex constructor isn't constexpr.
5083
5084 2023-06-29  Jonathan Wakely  <jwakely@redhat.com>
5085
5086         PR libstdc++/110462
5087         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check that
5088         copy_file_range can be called with loff_t* arguments.
5089         * configure: Regenerate.
5090         * src/filesystem/ops-common.h (copy_file_copy_file_range):
5091         Use loff_t for offsets.
5092
5093 2023-06-29  Tom Tromey  <tromey@adacore.com>
5094
5095         * testsuite/lib/gdb-test.exp (gdb-test): Relax type-printer
5096         regexp.
5097
5098 2023-06-28  Jan Hubicka  <jh@suse.cz>
5099
5100         PR middle-end/109849
5101         * include/bits/c++config (std::__terminate): Mark cold.
5102         * include/bits/functexcept.h: Mark everything as cold.
5103         * libsupc++/exception: Mark terminate and unexpected as cold.
5104
5105 2023-06-26  Thomas Rodgers  <trodgers@redhat.com>
5106
5107         * include/pstl/algorithm_fwd.h: Synchronize with upstream.
5108         * include/pstl/algorithm_impl.h: Likewise.
5109         * include/pstl/execution_defs.h: Likewise.
5110         * include/pstl/execution_impl.h: Likewise.
5111         * include/pstl/glue_algorithm_impl.h: Likewise.
5112         * include/pstl/glue_execution_defs.h: Likewise.
5113         * include/pstl/glue_memory_impl.h: Likewise.
5114         * include/pstl/glue_numeric_impl.h: Likewise.
5115         * include/pstl/memory_impl.h: Likewise.
5116         * include/pstl/numeric_fwd.h: Likewise.
5117         * include/pstl/numeric_impl.h: Likewise.
5118         * include/pstl/parallel_backend.h: Likewise.
5119         * include/pstl/parallel_backend_serial.h: Likewise.
5120         * include/pstl/parallel_backend_tbb.h: Likewise.
5121         * include/pstl/parallel_impl.h: Likewise.
5122         * include/pstl/pstl_config.h: Likewise.
5123         * include/pstl/unseq_backend_simd.h: Likewise.
5124         * include/pstl/utils.h: Likewise.
5125         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc:
5126         Likewise.
5127         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc:
5128         Likewise.
5129         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_fill_destroy.cc:
5130         Likewise.
5131         * testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc:
5132         Likewise.
5133         * testsuite/25_algorithms/pstl/alg_merge/merge.cc: Likewise.
5134         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc:
5135         Likewise.
5136         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc:
5137         Likewise.
5138         * testsuite/25_algorithms/pstl/alg_modifying_operations/fill.cc:
5139         Likewise.
5140         * testsuite/25_algorithms/pstl/alg_modifying_operations/generate.cc:
5141         Likewise.
5142         * testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc:
5143         Likewise.
5144         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc:
5145         Likewise.
5146         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc:
5147         Likewise.
5148         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc:
5149         Likewise.
5150         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove_copy.cc:
5151         Likewise.
5152         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace.cc:
5153         Likewise.
5154         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc:
5155         Likewise.
5156         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc:
5157         Likewise.
5158         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc:
5159         Likewise.
5160         * testsuite/25_algorithms/pstl/alg_modifying_operations/swap_ranges.cc:
5161         Likewise.
5162         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_binary.cc:
5163         Likewise.
5164         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_unary.cc:
5165         Likewise.
5166         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc:
5167         Likewise.
5168         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc:
5169         Likewise.
5170         * testsuite/25_algorithms/pstl/alg_nonmodifying/adjacent_find.cc:
5171         Likewise.
5172         * testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc:
5173         Likewise.
5174         * testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc:
5175         Likewise.
5176         * testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc:
5177         Likewise.
5178         * testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc:
5179         Likewise.
5180         * testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc:
5181         Likewise.
5182         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc:
5183         Likewise.
5184         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc:
5185         Likewise.
5186         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc:
5187         Likewise.
5188         * testsuite/25_algorithms/pstl/alg_nonmodifying/for_each.cc:
5189         Likewise.
5190         * testsuite/25_algorithms/pstl/alg_nonmodifying/mismatch.cc:
5191         Likewise.
5192         * testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc:
5193         Likewise.
5194         * testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc:
5195         Likewise.
5196         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc:
5197         Likewise.
5198         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc:
5199         Likewise.
5200         * testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc:
5201         Likewise.
5202         * testsuite/25_algorithms/pstl/alg_sorting/includes.cc:
5203         Likewise.
5204         * testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc:
5205         Likewise.
5206         * testsuite/25_algorithms/pstl/alg_sorting/is_sorted.cc:
5207         Likewise.
5208         * testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc:
5209         Likewise.
5210         * testsuite/25_algorithms/pstl/alg_sorting/minmax_element.cc:
5211         Likewise.
5212         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc:
5213         Likewise.
5214         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc:
5215         Likewise.
5216         * testsuite/25_algorithms/pstl/alg_sorting/set.cc:
5217         Likewise.
5218         * testsuite/25_algorithms/pstl/alg_sorting/sort.cc:
5219         Likewise.
5220         * testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc:
5221         Likewise.
5222         * testsuite/26_numerics/pstl/numeric_ops/reduce.cc:
5223         Likewise.
5224         * testsuite/26_numerics/pstl/numeric_ops/scan.cc:
5225         Likewise.
5226         * testsuite/26_numerics/pstl/numeric_ops/transform_reduce.cc:
5227         Likewise.
5228         * testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc:
5229         Likewise.
5230         * testsuite/util/pstl/test_utils.h:
5231         Likewise.
5232
5233 2023-06-26  Jonathan Wakely  <jwakely@redhat.com>
5234
5235         PR libstdc++/110239
5236         * include/std/format (__format::__parse_integer): Fix buffer
5237         overflow for wide chars.
5238         (formatter<const void*, C>::format): Cast to uintptr_t instead
5239         of uint64_t.
5240         * testsuite/std/format/string.cc: Test too-large widths.
5241
5242 2023-06-26  Jonathan Wakely  <jwakely@redhat.com>
5243
5244         * include/bits/iterator_concepts.h (projected): Replace class
5245         template with alias template denoting an ADL-proofed helper.
5246         (incremental_traits<projected<Iter, Proj>>): Remove.
5247         * testsuite/24_iterators/indirect_callable/projected-adl.cc:
5248         New test.
5249
5250 2023-06-26  Jonathan Wakely  <jwakely@redhat.com>
5251
5252         * include/debug/helper_functions.h (__get_distance)
5253         (__check_singular, __valid_range_aux, __valid_range): Qualify
5254         calls to disable ADL.
5255         (__check_singular_aux(const _Safe_iterator_base*)): Declare
5256         overload that was previously found via ADL.
5257
5258 2023-06-23  Jonathan Wakely  <jwakely@redhat.com>
5259
5260         * include/bits/vector.tcc (_M_realloc_insert): Replace try-block
5261         with RAII types.
5262
5263 2023-06-20  Jonathan Wakely  <jwakely@redhat.com>
5264
5265         * include/std/array (to_array(T(&)[N])): Remove redundant
5266         condition.
5267         (to_array(T(&&)[N])): Remove redundant std::move.
5268
5269 2023-06-16  Alexandre Oliva  <oliva@adacore.com>
5270
5271         * testsuite/20_util/from_chars/4.cc: Skip long double on
5272         aarch64-rtems.
5273
5274 2023-06-16  Joel Brobecker  <brobecker@adacore.com>
5275
5276         * configure.ac ["x${with_newlib}" = "xyes"]: Define
5277         HAVE_HYPOTF.  Add compile-checks for various long double
5278         math functions as well.
5279         * configure: Regenerate.
5280
5281 2023-06-14  Jonny Grant  <jg@jguk.org>
5282
5283         * doc/xml/manual/extensions.xml: Remove demangle exception
5284         description and include.
5285         * doc/html/manual/ext_demangling.html: Regenerate.
5286
5287 2023-06-10  Hans-Peter Nilsson  <hp@axis.com>
5288
5289         * testsuite/27_io/basic_istream/ignore/wchar_t/94749.cc (main)
5290         [! SIMULATOR_TEST]: Also exclude running test05.
5291         * testsuite/27_io/basic_istream/ignore/char/94749.cc: Ditto.
5292
5293 2023-06-09  Ken Matsui  <kmatsui@cs.washington.edu>
5294
5295         * include/std/type_traits: Use using instead of typedef
5296
5297 2023-06-09  Jonathan Wakely  <jwakely@redhat.com>
5298
5299         PR libstdc++/110077
5300         * src/c++17/floating_from_chars.cc (from_chars) <_Float128>:
5301         Only define if _Float128 and long double have different
5302         representations.
5303
5304 2023-06-09  Jonathan Wakely  <jwakely@redhat.com>
5305
5306         PR libstdc++/100285
5307         * include/experimental/internet [IPPROTO_TCP || IPPROTO_UDP]
5308         (basic_endpoint, basic_resolver_entry, resolver_base)
5309         (basic_resolver_results, basic_resolver): Only define if the tcp
5310         or udp protocols will be defined.
5311
5312 2023-06-09  Jonathan Wakely  <jwakely@redhat.com>
5313
5314         * acinclude.m4 (libtool_VERSION): Update to 6.0.33.
5315         * configure: Regenerate.
5316         * doc/xml/manual/abi.xml: Add libstdc++.so.6.0.33.
5317         * doc/html/manual/abi.html: Regenerate.
5318
5319 2023-06-09  Jonathan Wakely  <jwakely@redhat.com>
5320
5321         PR libstdc++/110149
5322         * include/std/format (formatter<const void*, charT>::parse):
5323         Only alow 0 and P for C++26 and non-strict modes.
5324         (formatter<const void*, charT>::format): Use toupper for P
5325         type, and insert zero-fill characters for 0 option.
5326         * testsuite/std/format/functions/format.cc: Check pointer
5327         formatting. Only check P2510R3 extensions conditionally.
5328         * testsuite/std/format/parse_ctx.cc: Only check P2510R3
5329         extensions conditionally.
5330
5331 2023-06-09  Jonathan Wakely  <jwakely@redhat.com>
5332
5333         PR libstdc++/110167
5334         * include/std/array (to_array): Initialize arrays of trivial
5335         types using memcpy. For non-trivial types, use lambda
5336         expressions instead of a separate helper function.
5337         (__to_array): Remove.
5338         * testsuite/23_containers/array/creation/110167.cc: New test.
5339
5340 2023-06-09  Jonathan Wakely  <jwakely@redhat.com>
5341
5342         * testsuite/23_containers/deque/modifiers/emplace/52799.cc:
5343         Removed.
5344         * testsuite/23_containers/deque/modifiers/emplace/const_iterator.cc:
5345         Removed.
5346         * testsuite/23_containers/list/modifiers/emplace/52799.cc:
5347         Removed.
5348         * testsuite/23_containers/list/modifiers/emplace/const_iterator.cc:
5349         Removed.
5350         * testsuite/23_containers/vector/modifiers/emplace/52799.cc:
5351         Removed.
5352         * testsuite/23_containers/vector/modifiers/emplace/const_iterator.cc:
5353         Removed.
5354         * testsuite/23_containers/deque/modifiers/emplace/1.cc: New
5355         test.
5356         * testsuite/23_containers/list/modifiers/emplace/1.cc: New
5357         test.
5358         * testsuite/23_containers/vector/modifiers/emplace/1.cc: New
5359         test.
5360
5361 2023-06-07  Jakub Jelinek  <jakub@redhat.com>
5362
5363         PR libstdc++/110145
5364         * testsuite/20_util/to_chars/double.cc: Include <cfloat>.
5365         (double_to_chars_test_cases,
5366         double_scientific_precision_to_chars_test_cases_2,
5367         double_fixed_precision_to_chars_test_cases_2): #if out 1e126, 4.91e-6
5368         and 5.547e-6 tests if FLT_EVAL_METHOD is negative or larger than 1.
5369         Add unconditional tests with corresponding double constants
5370         0x1.7a2ecc414a03fp+418, 0x1.4981285e98e79p-18 and
5371         0x1.7440bbff418b9p-18.
5372
5373 2023-06-07  Jonathan Wakely  <jwakely@redhat.com>
5374
5375         * testsuite/util/testsuite_abi.cc (check_version): Re-add
5376         CXXABI_1.3.14.
5377
5378 2023-06-07  Jonathan Wakely  <jwakely@redhat.com>
5379
5380         * testsuite/18_support/nested_exception/rethrow_if_nested-term.cc:
5381         Require effective target exceptions_enabled instead of using
5382         dg-skip-if.
5383         * testsuite/23_containers/vector/capacity/constexpr.cc: Expect
5384         shrink_to_fit() to be a no-op without exceptions enabled.
5385         * testsuite/23_containers/vector/capacity/shrink_to_fit.cc:
5386         Likewise.
5387         * testsuite/ext/bitmap_allocator/check_allocate_max_size.cc:
5388         Require effective target exceptions_enabled.
5389         * testsuite/ext/malloc_allocator/check_allocate_max_size.cc:
5390         Likewise.
5391         * testsuite/ext/mt_allocator/check_allocate_max_size.cc:
5392         Likewise.
5393         * testsuite/ext/new_allocator/check_allocate_max_size.cc:
5394         Likewise.
5395         * testsuite/ext/pool_allocator/check_allocate_max_size.cc:
5396         Likewise.
5397         * testsuite/ext/throw_allocator/check_allocate_max_size.cc:
5398         Likewise.
5399
5400 2023-06-07  Jonathan Wakely  <jwakely@redhat.com>
5401
5402         * testsuite/20_util/duration/cons/2.cc: Use values that aren't
5403         affected by rounding.
5404         * testsuite/20_util/from_chars/5.cc: Cast arithmetic result to
5405         double before comparing for equality.
5406         * testsuite/20_util/from_chars/6.cc: Likewise.
5407         * testsuite/20_util/variant/86874.cc: Use values that aren't
5408         affected by rounding.
5409         * testsuite/25_algorithms/lower_bound/partitioned.cc: Compare to
5410         original value instead of to floating-point-literal.
5411         * testsuite/26_numerics/random/discrete_distribution/cons/range.cc:
5412         Cast arithmetic result to double before comparing for equality.
5413         * testsuite/26_numerics/random/piecewise_constant_distribution/cons/range.cc:
5414         Likewise.
5415         * testsuite/26_numerics/random/piecewise_linear_distribution/cons/range.cc:
5416         Likewise.
5417         * testsuite/26_numerics/valarray/transcend.cc (eq): Check that
5418         the absolute difference is less than 0.01 instead of comparing
5419         to two decimal places.
5420         * testsuite/27_io/basic_istream/extractors_arithmetic/char/01.cc:
5421         Cast arithmetic result to double before comparing for equality.
5422         * testsuite/27_io/basic_istream/extractors_arithmetic/char/09.cc:
5423         Likewise.
5424         * testsuite/27_io/basic_istream/extractors_arithmetic/char/10.cc:
5425         Likewise.
5426         * testsuite/27_io/basic_istream/extractors_arithmetic/wchar_t/01.cc:
5427         Likewise.
5428         * testsuite/27_io/basic_istream/extractors_arithmetic/wchar_t/09.cc:
5429         Likewise.
5430         * testsuite/27_io/basic_istream/extractors_arithmetic/wchar_t/10.cc:
5431         Likewise.
5432         * testsuite/ext/random/hoyt_distribution/cons/parms.cc: Likewise.
5433
5434 2023-06-07  Jonathan Wakely  <jwakely@redhat.com>
5435
5436         Revert:
5437         2023-06-06  Jonathan Wakely  <jwakely@redhat.com>
5438
5439         * configure.ac: Use AS_IF.
5440         * configure: Regenerate.
5441
5442 2023-06-07  Thomas Schwinge  <thomas@codesourcery.com>
5443
5444         * testsuite/lib/prune.exp (libstdc++-dg-prune): Support
5445         'UNSUPPORTED: [...]: exception handling disabled'.
5446
5447 2023-06-06  Jonathan Wakely  <jwakely@redhat.com>
5448
5449         * testsuite/util/testsuite_abi.cc (check_version): Add
5450         CXXABI_1.3.15 symver and make it the latestp. Remove
5451         GLIBCXX_IEEE128_3.4.31 and GLIBCXX_LDBL_3.4.31 from latestp.
5452
5453 2023-06-06  Jonathan Wakely  <jwakely@redhat.com>
5454             Jakub Jelinek  <jakub@redhat.com>
5455
5456         PR libstdc++/104772
5457         * include/std/limits: (numeric_limits<__float128>): Define
5458         for __STRICT_ANSI__ as well.
5459         * testsuite/18_support/numeric_limits/128bit.cc: Remove
5460         check for __STRICT_ANSI__.
5461
5462 2023-06-06  Jonathan Wakely  <jwakely@redhat.com>
5463
5464         * configure.ac: Use AS_IF.
5465         * configure: Regenerate.
5466
5467 2023-06-06  Matthias Kretz  <m.kretz@gsi.de>
5468
5469         PR libstdc++/109822
5470         * include/experimental/bits/simd_builtin.h (_S_store): Rewrite
5471         to avoid casts to other vector types. Implement store as
5472         succession of power-of-2 sized memcpy to avoid PR90424.
5473
5474 2023-06-06  Matthias Kretz  <m.kretz@gsi.de>
5475
5476         PR libstdc++/110054
5477         * include/experimental/bits/simd_builtin.h (_S_masked_store):
5478         Call into deduced ABI's SimdImpl after conversion.
5479         * include/experimental/bits/simd_x86.h (_S_masked_store_nocvt):
5480         Don't use _mm_maskmoveu_si128. Use the generic fall-back
5481         implementation. Also fix masked stores without SSE2, which
5482         were not doing anything before.
5483
5484 2023-06-06  Matthias Kretz  <m.kretz@gsi.de>
5485
5486         * include/experimental/bits/simd.h (__bit_cast): Use
5487         __gnu__::__vector_size__ instead of gnu::vector_size.
5488
5489 2023-06-06  Jonathan Wakely  <jwakely@redhat.com>
5490
5491         PR libstdc++/110139
5492         * include/std/array (__array_traits<T, 0>::operator T*()): Make
5493         conversion operator explicit.
5494         (array::front): Use size_type as subscript operand.
5495         (array::data): Use static_cast to make conversion explicit.
5496         * testsuite/23_containers/array/element_access/110139.cc: New
5497         test.
5498
5499 2023-06-06  Joseph Faulls  <Joseph.Faulls@imgtec.com>
5500
5501         * include/bits/locale_classes.tcc: Remove check for
5502         codecvt<char8_t, char, mbstate_t> facet.
5503
5504 2023-06-06  Jonathan Wakely  <jwakely@redhat.com>
5505
5506         * src/filesystem/ops-common.h (do_copy_file) [O_CLOEXEC]: Set
5507         close-on-exec flag on file descriptors.
5508
5509 2023-06-06  Jonathan Wakely  <jwakely@redhat.com>
5510
5511         PR libstdc++/108178
5512         * src/filesystem/ops-common.h (do_copy_file): Check for empty
5513         files by trying to read a character.
5514         * testsuite/27_io/filesystem/operations/copy_file_108178.cc:
5515         New test.
5516
5517 2023-06-06  Jannik Glückert  <jannik.glueckert@gmail.com>
5518
5519         * acinclude.m4 (_GLIBCXX_USE_COPY_FILE_RANGE): Define.
5520         * config.h.in: Regenerate.
5521         * configure: Regenerate.
5522         * src/filesystem/ops-common.h (copy_file_copy_file_range):
5523         Define new function.
5524         (do_copy_file): Use it.
5525
5526 2023-06-06  Jannik Glückert  <jannik.glueckert@gmail.com>
5527
5528         * acinclude.m4 (_GLIBCXX_HAVE_LSEEK): Define.
5529         * config.h.in: Regenerate.
5530         * configure: Regenerate.
5531         * src/filesystem/ops-common.h (copy_file_sendfile): Define new
5532         function for sendfile logic. Loop to support large files. Skip
5533         zero-length files.
5534         (do_copy_file): Use it.
5535
5536 2023-06-04  Jason Merrill  <jason@redhat.com>
5537
5538         PR c++/97720
5539         * libsupc++/eh_call.cc (__cxa_call_terminate): Take void*.
5540         * config/abi/pre/gnu.ver: Add it.
5541
5542 2023-06-02  François Dumont  <fdumont@gcc.gnu.org>
5543
5544         * include/parallel/algobase.h: Include <parallel/search.h>.
5545
5546 2023-06-01  Jonathan Wakely  <jwakely@redhat.com>
5547
5548         * testsuite/26_numerics/pstl/numeric_ops/transform_reduce.cc:
5549         Add const to equality operator.
5550
5551 2023-06-01  Jonathan Wakely  <jwakely@redhat.com>
5552
5553         * include/std/expected (expected::and_then, expected::or_else)
5554         (expected::transform_error): Use _M_val and _M_unex instead of
5555         calling value() and error(), as per LWG 3938.
5556         (expected::transform): Likewise. Remove incorrect std::move
5557         calls from lvalue overloads.
5558         (expected<void, E>::and_then, expected<void, E>::or_else)
5559         (expected<void, E>::transform): Use _M_unex instead of calling
5560         error().
5561         * testsuite/20_util/expected/lwg3877.cc: Add checks for and_then
5562         and transform, and for std::expected<void, E>.
5563         * testsuite/20_util/expected/lwg3938.cc: New test.
5564
5565 2023-06-01  Jonathan Wakely  <jwakely@redhat.com>
5566
5567         PR libstdc++/110060
5568         * include/bits/stl_vector.h (_Vector_base::_M_invariant):
5569         Remove.
5570         (vector::size, vector::capacity): Remove calls to _M_invariant.
5571         * include/bits/vector.tcc (vector::_M_fill_assign): Add
5572         optimization hint to reallocating path.
5573         (vector::_M_assign_aux(FwdIter, FwdIter, forward_iterator_tag)):
5574         Likewise.
5575         * testsuite/23_containers/vector/capacity/invariant.cc: Moved
5576         to...
5577         * testsuite/23_containers/vector/modifiers/assign/no_realloc.cc:
5578         ...here. Check assign(FwdIter, FwdIter) too.
5579         * testsuite/23_containers/vector/types/1.cc: Revert addition
5580         of -Wno-stringop-overread option.
5581
5582 2023-06-01  Jonathan Wakely  <jwakely@redhat.com>
5583
5584         * doc/xml/manual/evolution.xml: Document removal of implicit
5585         allocator rebinding extensions in strict mode and for C++20.
5586         * doc/html/*: Regenerate.
5587
5588 2023-06-01  Jason Merrill  <jason@redhat.com>
5589
5590         * libsupc++/eh_personality.cc (PERSONALITY_FUNCTION): Don't check
5591         handlers in the cleanup phase.
5592
5593 2023-06-01  Matthias Kretz  <m.kretz@gsi.de>
5594
5595         PR libstdc++/110050
5596         * include/experimental/bits/simd.h (__vectorized_sizeof): With
5597         __have_neon_a32 only single-precision float works (in addition
5598         to integers).
5599
5600 2023-06-01  François Dumont  <fdumont@gcc.gnu.org>
5601
5602         * include/bits/stl_algo.h
5603         (std::__search, std::search(_FwdIt1, _FwdIt1, _FwdIt2, _FwdIt2, _BinPred)): Move...
5604         * include/bits/stl_algobase.h: ...here.
5605         * include/std/functional: Replace <stl_algo.h> include by <stl_algobase.h>.
5606         * include/parallel/algo.h (std::__parallel::search<_FIt1, _FIt2, _BinaryPred>)
5607         (std::__parallel::__search_switch<_FIt1, _FIt2, _BinaryPred, _ItTag1, _ItTag2>):
5608         Move...
5609         * include/parallel/algobase.h: ...here.
5610         * include/experimental/functional: Remove <bits/stl_algo.h> and <parallel/algorithm>
5611         includes. Include <bits/stl_algobase.h>.
5612
5613 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
5614
5615         PR libstdc++/109818
5616         * acinclude.m4 (GLIBCXX_ENABLE_C99): Add separate check for
5617         float_t and double_t and define HAVE_C99_FLT_EVAL_TYPES.
5618         * config.h.in: Regenerate.
5619         * configure: Regenerate.
5620         * include/c_global/cmath (float_t, double_t): Guard using new
5621         _GLIBCXX_HAVE_C99_FLT_EVAL_TYPES macro.
5622
5623 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
5624
5625         * acinclude.m4 (GLIBCXX_ENABLE_C99): Add checks for C99 math
5626         functions and define _GLIBCXX_USE_C99_MATH_FUNCS. Move checks
5627         for C99 rounding functions to here.
5628         (GLIBCXX_CHECK_C99_TR1): Remove checks for C99 rounding
5629         functions from here.
5630         * config.h.in: Regenerate.
5631         * configure: Regenerate.
5632         * include/bits/random.h: Use _GLIBCXX_USE_C99_MATH_FUNCS instead
5633         of _GLIBCXX_USE_C99_MATH_TR1.
5634         * include/bits/random.tcc: Likewise.
5635         * include/c_compatibility/math.h: Likewise.
5636         * include/c_global/cmath: Likewise.
5637         * include/ext/random: Likewise.
5638         * include/ext/random.tcc: Likewise.
5639         * include/std/complex: Likewise.
5640         * testsuite/20_util/from_chars/4.cc: Likewise.
5641         * testsuite/20_util/from_chars/8.cc: Likewise.
5642         * testsuite/26_numerics/complex/proj.cc: Likewise.
5643         * testsuite/26_numerics/headers/cmath/60401.cc: Likewise.
5644         * testsuite/26_numerics/headers/cmath/types_std_c++0x.cc:
5645         Likewise.
5646         * testsuite/lib/libstdc++.exp (check_v3_target_cstdint):
5647         Likewise.
5648         * testsuite/util/testsuite_random.h: Likewise.
5649
5650 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
5651
5652         * include/bits/stl_vector.h (_Vector_base::_M_invariant()): New
5653         function.
5654         (vector::size(), vector::capacity()): Call _M_invariant().
5655         * testsuite/23_containers/vector/capacity/invariant.cc: New test.
5656         * testsuite/23_containers/vector/types/1.cc: Add suppression for
5657         false positive warning (PR110060).
5658
5659 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
5660
5661         PR libstdc++/109921
5662         * src/c++17/floating_from_chars.cc: Check __FLT128_MANT_DIG__ is
5663         defined before trying to use _Float128.
5664
5665 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
5666
5667         * acinclude.m4 (GLIBCXX_ZONEINFO_DIR): Fix for 32-bit pointers
5668         to check __INT_PTR_WIDTH__ instead of sizeof(void*).
5669         * configure: Regenerate.
5670
5671 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
5672
5673         * include/bits/unique_lock.h: Include <bits/error_constants.h>
5674         here for std::errc constants.
5675         * include/std/mutex: Do not include <bits/error_constants.h> and
5676         <exception> here.
5677
5678 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
5679
5680         * configure.ac: Replace use of -o operator for test.
5681         * configure: Regenerate.
5682
5683 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
5684
5685         * include/std/scoped_allocator (scoped_allocator_adaptor): Add
5686         noexcept to all constructors except the default constructor.
5687         (scoped_allocator_adaptor::inner_allocator): Add noexcept.
5688         (scoped_allocator_adaptor::outer_allocator): Likewise.
5689         * testsuite/20_util/scoped_allocator/noexcept.cc: New test.
5690
5691 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
5692
5693         PR libstdc++/104772
5694         * include/std/limits (numeric_limits<__float128>): Define.
5695         * testsuite/18_support/numeric_limits/128bit.cc: New test.
5696
5697 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
5698
5699         * acinclude.m4 (GLIBCXX_ZONEINFO_DIR): Extend logic for avr and
5700         msp430 to all 16-bit targets.
5701         * configure: Regenerate.
5702
5703 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
5704
5705         PR libstdc++/109921
5706         * src/c++17/floating_from_chars.cc (USE_STRTOF128_FOR_FROM_CHARS):
5707         Only define when USE_STRTOD_FOR_FROM_CHARS is also defined.
5708         (USE_STRTOD_FOR_FROM_CHARS): Do not undefine when long double is
5709         binary64.
5710         (from_chars(const char*, const char*, double&, chars_format)):
5711         Check __LDBL_MANT_DIG__ == __DBL_MANT_DIG__ here.
5712         (from_chars(const char*, const char*, _Float128&, chars_format))
5713         Only use from_chars_strtod when USE_STRTOD_FOR_FROM_CHARS is
5714         defined, otherwise parse a long double and convert to _Float128.
5715
5716 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
5717
5718         PR libstdc++/109922
5719         * include/std/iomanip (operator>>(basic_istream&, _Setfill)):
5720         Add deprecated attribute to non-standard overload.
5721         * doc/xml/manual/evolution.xml: Document deprecation.
5722         * doc/html/*: Regenerate.
5723         * testsuite/27_io/manipulators/standard/char/1.cc: Add
5724         dg-warning for expected deprecated warning.
5725         * testsuite/27_io/manipulators/standard/char/2.cc: Likewise.
5726         * testsuite/27_io/manipulators/standard/wchar_t/1.cc: Likewise.
5727         * testsuite/27_io/manipulators/standard/wchar_t/2.cc: Likewise.
5728
5729 2023-05-30  Alexandre Oliva  <oliva@adacore.com>
5730
5731         * testsuite/20_util/from_chars/4.cc: Skip long double test06
5732         on x86_64-vxworks.
5733         * testsuite/20_util/to_chars/long_double.cc: Xfail run on
5734         x86_64-vxworks.
5735
5736 2023-05-30  Matthias Kretz  <m.kretz@gsi.de>
5737
5738         PR libstdc++/109822
5739         * include/experimental/bits/simd.h (to_native): Use int NTTP
5740         as specified in PTS2.
5741         (to_compatible): Likewise. Add missing tag to call mask
5742         generator ctor.
5743         * testsuite/experimental/simd/pr109822_cast_functions.cc: New
5744         test.
5745
5746 2023-05-30  Matthias Kretz  <m.kretz@gsi.de>
5747
5748         * testsuite/experimental/simd/tests/integer_operators.cc:
5749         Compute expected value differently to avoid getting turned into
5750         a vector shift.
5751
5752 2023-05-30  Matthias Kretz  <m.kretz@gsi.de>
5753
5754         * testsuite/experimental/simd/tests/operator_cvt.cc: Make long
5755         double <-> (u)long conversion tests conditional on sizeof(long
5756         double) and sizeof(long).
5757
5758 2023-05-26  Matthias Kretz  <m.kretz@gsi.de>
5759
5760         * include/experimental/bits/simd_ppc.h (_S_bit_shift_left):
5761         Negative __y is UB, so prefer signed compare.
5762
5763 2023-05-25  Jonathan Wakely  <jwakely@redhat.com>
5764
5765         * testsuite/util/testsuite_allocator.h (PointerBase): Add
5766         relational operators.
5767
5768 2023-05-25  Alexandre Oliva  <oliva@adacore.com>
5769
5770         * testsuite/20_util/to_chars/long_double.cc: Expect execution
5771         fail on x86-vxworks.
5772
5773 2023-05-24  Matthias Kretz  <m.kretz@gsi.de>
5774
5775         PR libstdc++/109949
5776         * include/experimental/bits/simd.h (__intrinsic_type): If
5777         __ALTIVEC__ is defined, map gnu::vector_size types to their
5778         corresponding __vector T types without losing unsignedness of
5779         integer types. Also prefer long long over long.
5780         * include/experimental/bits/simd_ppc.h (_S_popcount): Cast mask
5781         object to the expected unsigned vector type.
5782
5783 2023-05-24  Matthias Kretz  <m.kretz@gsi.de>
5784
5785         PR libstdc++/109261
5786         * include/experimental/bits/simd.h (__intrinsic_type):
5787         Specialize __intrinsic_type<double, 8> and
5788         __intrinsic_type<double, 16> in any case, but provide the member
5789         type only with __aarch64__.
5790
5791 2023-05-24  Matthias Kretz  <m.kretz@gsi.de>
5792
5793         PR libstdc++/109261
5794         * include/experimental/bits/simd_neon.h (_S_reduce): Add
5795         constexpr and make NEON implementation conditional on
5796         not __builtin_is_constant_evaluated.
5797
5798 2023-05-23  Matthias Kretz  <m.kretz@gsi.de>
5799
5800         PR libstdc++/109261
5801         * include/experimental/bits/simd.h (_SimdWrapper::_M_set):
5802         Avoid vector builtin subscripting in constant expressions.
5803         (resizing_simd_cast): Avoid memcpy if constant_evaluated.
5804         (const_where_expression, where_expression, where)
5805         (__extract_part, simd_mask, _SimdIntOperators, simd): Add either
5806         _GLIBCXX_SIMD_CONSTEXPR (on public APIs), or constexpr (on
5807         internal APIs).
5808         * include/experimental/bits/simd_builtin.h (__vector_permute)
5809         (__vector_shuffle, __extract_part, _GnuTraits::_SimdCastType1)
5810         (_GnuTraits::_SimdCastType2, _SimdImplBuiltin)
5811         (_MaskImplBuiltin::_S_store): Add constexpr.
5812         (_CommonImplBuiltin::_S_store_bool_array)
5813         (_SimdImplBuiltin::_S_load, _SimdImplBuiltin::_S_store)
5814         (_SimdImplBuiltin::_S_reduce, _MaskImplBuiltin::_S_load): Add
5815         constant_evaluated case.
5816         * include/experimental/bits/simd_fixed_size.h
5817         (_S_masked_load): Reword comment.
5818         (__tuple_element_meta, __make_meta, _SimdTuple::_M_apply_r)
5819         (_SimdTuple::_M_subscript_read, _SimdTuple::_M_subscript_write)
5820         (__make_simd_tuple, __optimize_simd_tuple, __extract_part)
5821         (__autocvt_to_simd, _Fixed::__traits::_SimdBase)
5822         (_Fixed::__traits::_SimdCastType, _SimdImplFixedSize): Add
5823         constexpr.
5824         (_SimdTuple::operator[], _M_set): Add constexpr and add
5825         constant_evaluated case.
5826         (_MaskImplFixedSize::_S_load): Add constant_evaluated case.
5827         * include/experimental/bits/simd_scalar.h: Add constexpr.
5828         * include/experimental/bits/simd_x86.h (_CommonImplX86): Add
5829         constexpr and add constant_evaluated case.
5830         (_SimdImplX86::_S_equal_to, _S_not_equal_to, _S_less)
5831         (_S_less_equal): Value-initialize to satisfy constexpr
5832         evaluation.
5833         (_MaskImplX86::_S_load): Add constant_evaluated case.
5834         (_MaskImplX86::_S_store): Add constexpr and constant_evaluated
5835         case. Value-initialize local variables.
5836         (_MaskImplX86::_S_logical_and, _S_logical_or, _S_bit_not)
5837         (_S_bit_and, _S_bit_or, _S_bit_xor): Add constant_evaluated
5838         case.
5839         * testsuite/experimental/simd/pr109261_constexpr_simd.cc: New
5840         test.
5841
5842 2023-05-22  Matthias Kretz  <m.kretz@gsi.de>
5843
5844         * include/experimental/bits/simd_builtin.h (_S_fpclassify): Move
5845         __infn into #ifdef'ed block.
5846         * testsuite/experimental/simd/tests/fpclassify.cc: Declare
5847         constants only when used.
5848         * testsuite/experimental/simd/tests/frexp.cc: Likewise.
5849         * testsuite/experimental/simd/tests/logarithm.cc: Likewise.
5850         * testsuite/experimental/simd/tests/trunc_ceil_floor.cc:
5851         Likewise.
5852         * testsuite/experimental/simd/tests/ldexp_scalbn_scalbln_modf.cc:
5853         Move totest and expect1 into #ifdef'ed block.
5854
5855 2023-05-19  Gerald Pfeifer  <gerald@pfeifer.com>
5856
5857         * doc/xml/manual/strings.xml: Move lafstern.org reference to https.
5858         * doc/html/manual/strings.html: Regenerate.
5859
5860 2023-05-17  Jakub Jelinek  <jakub@redhat.com>
5861
5862         PR libstdc++/109883
5863         * testsuite/26_numerics/headers/cmath/constexpr_std_c++23.cc: New test.
5864
5865 2023-05-17  Jakub Jelinek  <jakub@redhat.com>
5866
5867         PR libstdc++/109883
5868         * include/c_global/cmath (atan2, fmod, pow): Move
5869         __gnu_cxx::__promote_2 using templates after _Float{16,32,64,128} and
5870         __gnu_cxx::__bfloat16_t overloads.
5871         (copysign, fdim, fmax, fmin, hypot, nextafter, remainder, remquo):
5872         Likewise.
5873         (fma): Move __gnu_cxx::__promote_3 using template after
5874         _Float{16,32,64,128} and __gnu_cxx::__bfloat16_t overloads.
5875
5876 2023-05-17  Jonathan Wakely  <jwakely@redhat.com>
5877
5878         * testsuite/18_support/headers/limits/synopsis.cc: Uncomment
5879         checks for float_round_style and float_denorm_style.
5880
5881 2023-05-17  Jonathan Wakely  <jwakely@redhat.com>
5882
5883         * include/bits/c++config: Add system_header pragma.
5884
5885 2023-05-17  Jonathan Wakely  <jwakely@redhat.com>
5886
5887         * include/std/expected (expected::and_then, expected::or_else)
5888         (expected::transform, expected::transform_error): Fix exception
5889         specifications as per LWG 3877.
5890         (expected<void, E>::and_then, expected<void, E>::transform):
5891         Likewise.
5892         * testsuite/20_util/expected/lwg3877.cc: New test.
5893
5894 2023-05-17  Ken Matsui  <kmatsui@cs.washington.edu>
5895
5896         * include/std/type_traits: Use __bool_constant instead of
5897         integral_constant.
5898
5899 2023-05-17  Jonathan Wakely  <jwakely@redhat.com>
5900
5901         * configure: Regenerate.
5902
5903 2023-05-16  Jonathan Wakely  <jwakely@redhat.com>
5904
5905         PR libstdc++/109741
5906         * acinclude.m4 (GLIBCXX_CHECK_ALIGNAS_CACHELINE): Define.
5907         * config.h.in: Regenerate.
5908         * configure: Regenerate.
5909         * configure.ac: Use GLIBCXX_CHECK_ALIGNAS_CACHELINE.
5910         * src/c++11/shared_ptr.cc (__gnu_internal::get_mutex): Do not
5911         align lock table if not supported. use __GCC_DESTRUCTIVE_SIZE
5912         instead of hardcoded 64.
5913
5914 2023-05-16  Jonathan Wakely  <jwakely@redhat.com>
5915
5916         * acinclude.m4 (GLIBCXX_USE_C99): Check for isblank in C++11
5917         mode and define _GLIBCXX_USE_C99_CTYPE. Check for <fenv.h>
5918         functions in C++11 mode and define _GLIBCXX_USE_C99_FENV.
5919         * config.h.in: Regenerate.
5920         * configure: Regenerate.
5921         * include/c_compatibility/fenv.h: Check _GLIBCXX_USE_C99_FENV
5922         instead of _GLIBCXX_USE_C99_FENV_TR1.
5923         * include/c_global/cfenv: Likewise.
5924         * include/c_global/cctype: Check _GLIBCXX_USE_C99_CTYPE instead
5925         of _GLIBCXX_USE_C99_CTYPE_TR1.
5926
5927 2023-05-16  Jonathan Wakely  <jwakely@redhat.com>
5928
5929         * acinclude.m4 (GLIBCXX_USE_C99): Check for <stdint.h> types in
5930         C++11 mode and define _GLIBCXX_USE_C99_STDINT. Check for
5931         <inttypes.h> features in C++11 mode and define
5932         _GLIBCXX_USE_C99_INTTYPES and _GLIBCXX_USE_C99_INTTYPES_WCHAR_T.
5933         * config.h.in: Regenerate.
5934         * configure: Regenerate.
5935         * doc/doxygen/user.cfg.in (PREDEFINED): Add new macros.
5936         * include/bits/chrono.h: Check _GLIBCXX_USE_C99_STDINT instead
5937         of _GLIBCXX_USE_C99_STDINT_TR1.
5938         * include/c_compatibility/inttypes.h: Check
5939         _GLIBCXX_USE_C99_INTTYPES and _GLIBCXX_USE_C99_INTTYPES_WCHAR_T
5940         instead of _GLIBCXX_USE_C99_INTTYPES_TR1 and
5941         _GLIBCXX_USE_C99_INTTYPES_WCHAR_T_TR1.
5942         * include/c_compatibility/stdatomic.h: Check
5943         _GLIBCXX_USE_C99_STDINT instead of _GLIBCXX_USE_C99_STDINT_TR1.
5944         * include/c_compatibility/stdint.h: Likewise.
5945         * include/c_global/cinttypes: Check _GLIBCXX_USE_C99_INTTYPES
5946         and _GLIBCXX_USE_C99_INTTYPES_WCHAR_T instead of
5947         _GLIBCXX_USE_C99_INTTYPES_TR1 and
5948         _GLIBCXX_USE_C99_INTTYPES_WCHAR_T_TR1.
5949         * include/c_global/cstdint: Check _GLIBCXX_USE_C99_STDINT
5950         instead of _GLIBCXX_USE_C99_STDINT_TR1.
5951         * include/std/atomic: Likewise.
5952         * src/c++11/cow-stdexcept.cc: Likewise.
5953         * testsuite/29_atomics/headers/stdatomic.h/c_compat.cc:
5954         Likewise.
5955         * testsuite/lib/libstdc++.exp (check_v3_target_cstdint):
5956         Likewise.
5957
5958 2023-05-16  Jonathan Wakely  <jwakely@redhat.com>
5959
5960         * acinclude.m4 (GLIBCXX_USE_C99): Check for complex inverse trig
5961         functions in C++11 mode and define _GLIBCXX_USE_C99_COMPLEX_ARC.
5962         * config.h.in: Regenerate.
5963         * configure: Regenerate.
5964         * doc/doxygen/user.cfg.in (PREDEFINED): Add new macro.
5965         * include/std/complex: Check _GLIBCXX_USE_C99_COMPLEX_ARC
5966         instead of _GLIBCXX_USE_C99_COMPLEX_TR1.
5967
5968 2023-05-16  Jonathan Wakely  <jwakely@redhat.com>
5969
5970         * testsuite/ext/debug_allocator/check_deallocate_null.cc: Add
5971         assertion to ensure expected exception is throw.
5972
5973 2023-05-16  Jonathan Wakely  <jwakely@redhat.com>
5974
5975         * testsuite/libstdc++-prettyprinters/chrono.cc: Only test
5976         printer for chrono::zoned_time for cx11 ABI and tzdb effective
5977         target.
5978
5979 2023-05-16  Jonathan Wakely  <jwakely@redhat.com>
5980
5981         * acinclude.m4 (GLIBCXX_CHECK_PTHREAD_MUTEX_CLOCKLOCK): Define
5982         _GLIBCXX_USE_PTHREAD_MUTEX_CLOCKLOCK in terms of _GLIBCXX_TSAN.
5983         * configure: Regenerate.
5984
5985 2023-05-12  Jonathan Wakely  <jwakely@redhat.com>
5986
5987         * acinclude.m4 (GLIBCXX_CHECK_C99_TR1): Use a non-null pointer
5988         to check for nan, nanf, and nanl.
5989         * configure: Regenerate.
5990
5991 2023-05-12  Jonathan Wakely  <jwakely@redhat.com>
5992
5993         * include/bits/char_traits.h (char_traits<char16_t>): Do not
5994         depend on _GLIBCXX_USE_C99_STDINT_TR1.
5995         (char_traits<char32_t>): Likewise.
5996         * include/experimental/source_location: Likewise.
5997
5998 2023-05-12  Jonathan Wakely  <jwakely@redhat.com>
5999
6000         * include/std/atomic (atomic_int_least8_t, atomic_uint_least8_t)
6001         (atomic_int_least16_t, atomic_uint_least16_t)
6002         (atomic_int_least32_t, atomic_uint_least32_t)
6003         (atomic_int_least64_t, atomic_uint_least64_t)
6004         (atomic_int_fast16_t, atomic_uint_fast16_t)
6005         (atomic_int_fast32_t, atomic_uint_fast32_t)
6006         (atomic_int_fast64_t, atomic_uint_fast64_t)
6007         (atomic_intmax_t, atomic_uintmax_t): Define unconditionally.
6008         * testsuite/29_atomics/headers/stdatomic.h/c_compat.cc: Adjust.
6009
6010 2023-05-12  Jonathan Wakely  <jwakely@redhat.com>
6011
6012         * include/bits/algorithmfwd.h (shuffle): Do not depend on
6013         _GLIBCXX_USE_C99_STDINT_TR1.
6014         * include/bits/ranges_algo.h (shuffle): Likewise.
6015         * include/bits/stl_algo.h (shuffle): Likewise.
6016         * include/ext/random: Likewise.
6017         * include/ext/throw_allocator.h (random_condition): Likewise.
6018         * include/std/random: Likewise.
6019         * src/c++11/cow-string-inst.cc: Likewise.
6020         * src/c++11/random.cc: Likewise.
6021
6022 2023-05-12  Jonathan Wakely  <jwakely@redhat.com>
6023
6024         * testsuite/experimental/feat-cxx14.cc: Remove dependency on
6025         _GLIBCXX_USE_C99_STDINT_TR1.
6026
6027 2023-05-12  Jonathan Wakely  <jwakely@redhat.com>
6028
6029         * testsuite/22_locale/locale/cons/unicode.cc: Remove dependency
6030         on _GLIBCXX_USE_C99_STDINT_TR1.
6031
6032 2023-05-12  Jonathan Wakely  <jwakely@redhat.com>
6033
6034         * testsuite/21_strings/basic_string_view/typedefs.cc: Remove
6035         dependency on _GLIBCXX_USE_C99_STDINT_TR1.
6036         * testsuite/experimental/string_view/typedefs.cc: Likewise.
6037
6038 2023-05-11  Jonathan Wakely  <jwakely@redhat.com>
6039
6040         * src/c++17/floating_from_chars.cc [USE_STRTOD_FOR_FROM_CHARS]
6041         (auto_locale, auto_ferounding): New class types.
6042         (from_chars_impl): Use auto_locale and auto_ferounding.
6043
6044 2023-05-11  Jonathan Wakely  <jwakely@redhat.com>
6045
6046         PR libstdc++/109772
6047         * include/std/chrono (hh_mm_ss::__fits): Remove variable
6048         template.
6049         (hh_mm_ss::__subseconds): Remove __fits from constraints.
6050         * testsuite/std/time/hh_mm_ss/109772.cc: New test.
6051         * testsuite/std/time/hh_mm_ss/1.cc: Adjust expected size for
6052         hh_mm_ss<duration<int, std::pico>>.
6053
6054 2023-05-11  Jonathan Wakely  <jwakely@redhat.com>
6055
6056         * config/abi/pre/gnu.ver: Export basic_string::_S_allocate.
6057         * include/bits/basic_ios.h: Add static assertion checking
6058         traits_type::value_type.
6059         * include/bits/basic_string.h: Likewise. Do not rebind
6060         allocator, and add static assertion checking its value_type.
6061         (basic_string::_Alloc_traits_impl): Remove class template.
6062         (basic_string::_S_allocate): New static member function.
6063         (basic_string::assign): Use _S_allocate.
6064         * include/bits/basic_string.tcc (basic_string::_M_create)
6065         (basic_string::reserve, basic_string::_M_replace): Likewise.
6066         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/debug.cc:
6067         Disable for C++20 and later.
6068         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/int.cc:
6069         Likweise.
6070
6071 2023-05-11  Jonathan Wakely  <jwakely@redhat.com>
6072
6073         PR libstdc++/109758
6074         * include/bits/std_abs.h (abs(__float128)): Handle negative NaN
6075         and negative zero correctly.
6076         * testsuite/26_numerics/headers/cmath/109758.cc: New test.
6077
6078 2023-05-10  François Dumont  <fdumont@gcc.gnu.org>
6079
6080         * include/bits/hashtable_policy.h
6081         (_NodeBuilder<>::_S_build): Use __node_ptr.
6082         (_ReuseOrAllocNode<>): Use __node_ptr in place of __node_type*.
6083         (_AllocNode<>): Likewise.
6084         (_Equality<>::_M_equal): Remove const_iterator usages. Only preserved
6085         to call std::is_permutation in the non-unique key implementation.
6086         * include/bits/hashtable.h (_Hashtable<>::_M_update_begin()): Capture
6087         _M_begin() once.
6088         (_Hashtable<>::_M_bucket_begin(size_type)): Implement implicitly inline.
6089         (_Hashtable<>::_M_insert_bucket_begin): Likewise.
6090         (_Hashtable<>::_M_remove_bucket_begin): Likewise.
6091         (_Hashtable<>::_M_compute_hash_code): Use __node_ptr rather than
6092         const_iterator.
6093         (_Hashtable<>::find): Likewise.
6094         (_Hashtable<>::_M_emplace): Likewise.
6095         (_Hashtable<>::_M_insert_unique): Likewise.
6096
6097 2023-05-09  Jonathan Wakely  <jwakely@redhat.com>
6098
6099         * python/libstdcxx/v6/printers.py (StdChronoDurationPrinter):
6100         Print floating-point durations correctly.
6101         (StdChronoTimePointPrinter): Support printing only the value,
6102         not the type name. Uncomment handling for known clocks.
6103         (StdChronoZonedTimePrinter): Remove type names from output.
6104         (StdChronoCalendarPrinter): Fix hh_mm_ss member access.
6105         (StdChronoTimeZonePrinter): Add equals sign to output.
6106         * testsuite/libstdc++-prettyprinters/chrono.cc: New test.
6107
6108 2023-05-05  Alexandre Oliva  <oliva@adacore.com>
6109
6110         * testsuite/20_util/from_chars/4.cc: Skip long double test06
6111         on aarch64-vxworks.
6112         * testsuite/20_util/to_chars/long_double.cc: Xfail run on
6113         aarch64-vxworks.
6114
6115 2023-05-04  Jonathan Wakely  <jwakely@redhat.com>
6116
6117         * doc/xml/manual/abi.xml (abi.versioning.history): Document
6118         libstdc++.so.6.0.32 and GLIBCXX_3.4.32 version.
6119         * doc/html/manual/abi.html: Regenerate.
6120
6121 2023-05-04  Florian Weimer  <fweimer@redhat.com>
6122
6123         * doc/xml/manual/abi.xml (abi.versioning.history): Add
6124         GCC_7.0.0, GCC_9.0.0, GCC_11.0, GCC_12.0.0, GCC_13.0.0 for
6125         libgcc_s.
6126
6127 2023-05-03  Jakub Jelinek  <jakub@redhat.com>
6128
6129         * src/c++17/floating_from_chars.cc
6130         (_ZSt10from_charsPKcS0_RDF128_St12chars_format): New alias to
6131         _ZSt10from_charsPKcS0_Ru9__ieee128St12chars_format.
6132         * src/c++17/floating_to_chars.cc (_ZSt8to_charsPcS_DF128_): New alias to
6133         _ZSt8to_charsPcS_u9__ieee128.
6134         (_ZSt8to_charsPcS_DF128_St12chars_format): New alias to
6135         _ZSt8to_charsPcS_u9__ieee128St12chars_format.
6136         (_ZSt8to_charsPcS_DF128_St12chars_formati): New alias to
6137         _ZSt8to_charsPcS_u9__ieee128St12chars_formati.
6138         * config/abi/post/powerpc64le-linux-gnu/baseline_symbols.txt: Updated.
6139
6140 2023-05-03  Jakub Jelinek  <jakub@redhat.com>
6141
6142         * configure.host (abi_baseline_pair): Use powerpc64le-linux-gnu
6143         rather than powerpc64-linux-gnu for powerpc64le*-linux*.
6144         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Remove
6145         _ZTI*DF128_, _ZTI*DF64x symbols and symbols in
6146         GLIBCXX_IEEE128_3.4.{29,30,31} and CXXABI_IEEE128_1.3.13 symbol
6147         versions.
6148         * config/abi/post/powerpc64le-linux-gnu/baseline_symbols.txt: New
6149         file.
6150
6151 2023-05-03  Kefu Chai  <kefu.chai@scylladb.com>
6152             Jonathan Wakely  <jwakely@redhat.com>
6153
6154         PR libstdc++/109703
6155         * include/bits/basic_string.h (basic_string(Iter, Iter, Alloc)):
6156         Initialize _M_string_length.
6157
6158 2023-05-02  Jakub Jelinek  <jakub@redhat.com>
6159
6160         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
6161         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
6162         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
6163         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
6164         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
6165         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
6166         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
6167         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
6168
6169 2023-05-02  Jakub Jelinek  <jakub@redhat.com>
6170
6171         PR libstdc++/109694
6172         * src/c++98/ios_init.cc: Add #pragma GCC diagnostic ignored for
6173         -Wattribute-alias.
6174
6175 2023-04-28  Jonathan Wakely  <jwakely@redhat.com>
6176
6177         * include/bits/random.h (gamma_distribution): Add to the right
6178         doxygen group.
6179         (discrete_distribution, piecewise_constant_distribution)
6180         (piecewise_linear_distribution): Create a new doxygen group and
6181         fix the incomplete doxygen comments.
6182         * include/bits/uniform_int_dist.h (uniform_int_distribution):
6183         Add to doxygen group.
6184
6185 2023-04-28  Jonathan Wakely  <jwakely@redhat.com>
6186
6187         * include/bits/uses_allocator.h: Add missing @file comment.
6188         * include/bits/regex.tcc: Remove stray doxygen comments.
6189         * include/experimental/memory_resource: Likewise.
6190         * include/std/bit: Tweak doxygen @cond comments.
6191         * include/std/expected: Likewise.
6192         * include/std/numbers: Likewise.
6193
6194 2023-04-28  Jonathan Wakely  <jwakely@redhat.com>
6195
6196         * doc/doxygen/user.cfg.in (STRIP_FROM_PATH): Remove prefixes
6197         from header paths.
6198
6199 2023-04-28  Jonathan Wakely  <jwakely@redhat.com>
6200
6201         * include/bits/move.h: Simplify opening/closing namespace std.
6202
6203 2023-04-28  Jakub Jelinek  <jakub@redhat.com>
6204
6205         PR libstdc++/108969
6206         * config/abi/pre/gnu.ver (GLIBCXX_3.4.32): Export
6207         _ZSt21ios_base_library_initv.
6208         * testsuite/util/testsuite_abi.cc (check_version): Add GLIBCXX_3.4.32
6209         symver and make it the latestp.
6210         * src/c++98/ios_init.cc (ios_base_library_init): New alias.
6211         * acinclude.m4 (libtool_VERSION): Change to 6:32:0.
6212         * include/std/iostream: If init_priority attribute is supported
6213         and _GLIBCXX_SYMVER_GNU, force undefined _ZSt21ios_base_library_initv
6214         symbol into the object.
6215         * configure: Regenerated.
6216
6217 2023-04-27  Jonathan Wakely  <jwakely@redhat.com>
6218
6219         * include/bits/mofunc_impl.h: Fix typo in doxygen comment.
6220         * include/std/format: Likewise.
6221
6222 2023-04-27  Jonathan Wakely  <jwakely@redhat.com>
6223
6224         * doc/doxygen/user.cfg.in (FORMULA_TRANSPARENT, DOT_FONTNAME)
6225         (DOT_FONTSIZE, DOT_TRANSPARENT): Remove obsolete options.
6226
6227 2023-04-27  Jonathan Wakely  <jwakely@redhat.com>
6228
6229         * doc/doxygen/user.cfg.in (SOURCE_BROWSER): Only set to YES for
6230         HTML docs.
6231         * include/bits/gslice_array.h (_DEFINE_VALARRAY_OPERATOR): Omit
6232         from doxygen docs.
6233         * include/bits/indirect_array.h (_DEFINE_VALARRAY_OPERATOR):
6234         Likewise.
6235         * include/bits/mask_array.h (_DEFINE_VALARRAY_OPERATOR):
6236         Likewise.
6237         * include/bits/slice_array.h (_DEFINE_VALARRAY_OPERATOR):
6238         Likewise.
6239         * include/std/valarray (_DEFINE_VALARRAY_UNARY_OPERATOR)
6240         (_DEFINE_VALARRAY_AUGMENTED_ASSIGNMENT)
6241         (_DEFINE_VALARRAY_EXPR_AUGMENTED_ASSIGNMENT)
6242         (_DEFINE_BINARY_OPERATOR): Likewise.
6243
6244 2023-04-27  Jonathan Wakely  <jwakely@redhat.com>
6245
6246         * include/bits/memory_resource.h: Improve doxygen comments.
6247         * include/std/memory_resource: Likewise.
6248
6249 2023-04-27  Jonathan Wakely  <jwakely@redhat.com>
6250
6251         PR libstdc++/40380
6252         * include/bits/basic_string.h: Improve doxygen comments.
6253         * include/bits/cow_string.h: Likewise.
6254         * include/bits/forward_list.h: Likewise.
6255         * include/bits/fs_dir.h: Likewise.
6256         * include/bits/fs_path.h: Likewise.
6257         * include/bits/quoted_string.h: Likewise.
6258         * include/bits/stl_bvector.h: Likewise.
6259         * include/bits/stl_map.h: Likewise.
6260         * include/bits/stl_multimap.h: Likewise.
6261         * include/bits/stl_multiset.h: Likewise.
6262         * include/bits/stl_set.h: Likewise.
6263         * include/bits/stl_vector.h: Likewise.
6264         * include/bits/unordered_map.h: Likewise.
6265         * include/bits/unordered_set.h: Likewise.
6266         * include/std/filesystem: Likewise.
6267         * include/std/iomanip: Likewise.
6268
6269 2023-04-27  Jonathan Wakely  <jwakely@redhat.com>
6270
6271         PR libstdc++/105081
6272         * src/c++11/random.cc (__throw_syserr): New function.
6273         (random_device::_M_init, random_device::_M_init_pretr1): Use new
6274         function for bad tokens.
6275         (random_device::_M_getval): Use new function for read errors.
6276         * testsuite/util/testsuite_random.h (random_device_available):
6277         Change catch handler to use std::system_error.
6278
6279 2023-04-24  Patrick Palka  <ppalka@redhat.com>
6280
6281         * include/bits/max_size_type.h (__max_diff_type::operator>>=):
6282         Fix propagation of sign bit.
6283         * testsuite/std/ranges/iota/max_size_type.cc: Avoid using the
6284         non-standard 'signed typedef-name'.  Add some compile-time tests
6285         for right-shifting a negative __max_diff_type value by more than
6286         one.
6287
6288 2023-04-19  Patrick Palka  <ppalka@redhat.com>
6289             Jonathan Wakely  <jwakely@redhat.com>
6290
6291         PR c++/100157
6292         * include/bits/utility.h (_Nth_type): Conditionally define in
6293         terms of __type_pack_element if available.
6294         * testsuite/20_util/tuple/element_access/get_neg.cc: Prune
6295         additional errors from the new built-in.
6296
6297 2023-04-19  Jonathan Wakely  <jwakely@redhat.com>
6298
6299         Revert:
6300         2023-04-18  Jonathan Wakely  <jwakely@redhat.com>
6301
6302         PR libstdc++/108969
6303         * src/Makefile.am: Move globals_io.cc to here.
6304         * src/Makefile.in: Regenerate.
6305         * src/c++98/Makefile.am: Remove globals_io.cc from here.
6306         * src/c++98/Makefile.in: Regenerate.
6307         * src/c++98/globals_io.cc [_GLIBCXX_SYMVER_GNU] (cin): Adjust
6308         symbol name and then export with GLIBCXX_3.4.31 symver.
6309         (cout, cerr, clog, wcin, wcout, wcerr, wclog): Likewise.
6310         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt:
6311         Regenerate.
6312         * config/abi/post/i486-linux-gnu/baseline_symbols.txt:
6313         Regenerate.
6314         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt:
6315         Regenerate.
6316         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt:
6317         Regenerate.
6318         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt:
6319         Regenerate.
6320         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt:
6321         Regenerate.
6322         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt:
6323         Regenerate.
6324         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt:
6325         Regenerate.
6326         * config/abi/pre/gnu.ver: Add iostream objects to new symver.
6327
6328 2023-04-19  Jonathan Wakely  <jwakely@redhat.com>
6329
6330         Revert:
6331         2023-04-18  Jonathan Wakely  <jwakely@redhat.com>
6332
6333         PR libstdc++/108969
6334         * config/abi/pre/gnu.ver: Fix preprocessor condition.
6335
6336 2023-04-18  Jonathan Wakely  <jwakely@redhat.com>
6337
6338         * doc/xml/manual/extensions.xml: Fix example to declare and
6339         qualify std::free, and use NULL instead of 0.
6340         * doc/html/manual/ext_demangling.html: Regenerate.
6341         * libsupc++/cxxabi.h: Adjust doxygen comments.
6342
6343 2023-04-18  Jonathan Wakely  <jwakely@redhat.com>
6344
6345         PR libstdc++/108969
6346         * config/abi/pre/gnu.ver: Fix preprocessor condition.
6347
6348 2023-04-18  Jonathan Wakely  <jwakely@redhat.com>
6349
6350         PR libstdc++/108969
6351         * src/Makefile.am: Move globals_io.cc to here.
6352         * src/Makefile.in: Regenerate.
6353         * src/c++98/Makefile.am: Remove globals_io.cc from here.
6354         * src/c++98/Makefile.in: Regenerate.
6355         * src/c++98/globals_io.cc [_GLIBCXX_SYMVER_GNU] (cin): Adjust
6356         symbol name and then export with GLIBCXX_3.4.31 symver.
6357         (cout, cerr, clog, wcin, wcout, wcerr, wclog): Likewise.
6358         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt:
6359         Regenerate.
6360         * config/abi/post/i486-linux-gnu/baseline_symbols.txt:
6361         Regenerate.
6362         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt:
6363         Regenerate.
6364         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt:
6365         Regenerate.
6366         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt:
6367         Regenerate.
6368         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt:
6369         Regenerate.
6370         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt:
6371         Regenerate.
6372         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt:
6373         Regenerate.
6374         * config/abi/pre/gnu.ver: Add iostream objects to new symver.
6375
6376 2023-04-18  Patrick Palka  <ppalka@redhat.com>
6377
6378         PR libstdc++/108827
6379         * include/bits/ranges_cmp.h (__cpp_lib_ranges): Bump value
6380         for C++23.
6381         * include/std/ranges (range_adaptor_closure): Define for C++23.
6382         * include/std/version (__cpp_lib_ranges): Bump value for
6383         C++23.
6384         * testsuite/std/ranges/version_c++23.cc: Bump expected value
6385         of __cpp_lib_ranges.
6386         * testsuite/std/ranges/range_adaptor_closure.cc: New test.
6387
6388 2023-04-18  Patrick Palka  <ppalka@redhat.com>
6389
6390         * include/bits/ranges_algo.h (__cpp_lib_ranges_contains):
6391         Define for C++23.
6392         (__cpp_lib_ranges_iota): Likewise.
6393         (__cpp_lib_ranges_find_last): Likewise.
6394         (__cpp_lib_fold): Rename to ...
6395         (__cpp_lib_ranges_fold): ... this.
6396         * include/std/version: As above.
6397         * testsuite/25_algorithms/fold_left/1.cc: Adjust after
6398         renaming __cpp_lib_fold.
6399         * testsuite/std/ranges/version_c++23.cc: Verify values
6400         of the above feature-test macros.
6401
6402 2023-04-18  Patrick Palka  <ppalka@redhat.com>
6403
6404         PR libstdc++/109525
6405         * include/std/ranges (views::_AsConst::operator()): Add
6406         missing const to constant_range test.
6407         * testsuite/std/ranges/adaptors/as_const/1.cc (test02):
6408         Improve formatting.  Adjust expected type of v2.
6409         (test03): New test.
6410
6411 2023-04-14  Patrick Palka  <ppalka@redhat.com>
6412
6413         * include/bits/ranges_base.h (const_iterator_t): Define for C++23.
6414         (const_sentinel_t): Likewise.
6415         (range_const_reference_t): Likewise.
6416         (constant_range): Likewise.
6417         (__cust_access::__possibly_const_range): Likewise, replacing ...
6418         (__cust_access::__as_const): ... this.
6419         (__cust_access::_CBegin::operator()): Redefine for C++23 as per P2278R4.
6420         (__cust_access::_CEnd::operator()): Likewise.
6421         (__cust_access::_CRBegin::operator()): Likewise.
6422         (__cust_access::_CREnd::operator()): Likewise.
6423         (__cust_access::_CData::operator()): Likewise.
6424         * include/bits/ranges_util.h (ranges::__detail::__different_from):
6425         Make it an alias of std::__detail::__different_from.
6426         (view_interface::cbegin): Define for C++23.
6427         (view_interface::cend): Likewise.
6428         * include/bits/stl_iterator.h (__detail::__different_from): Define.
6429         (iter_const_reference_t): Define for C++23.
6430         (__detail::__constant_iterator): Likewise.
6431         (__detail::__is_const_iterator): Likewise.
6432         (__detail::__not_a_const_iterator): Likewise.
6433         (__detail::__iter_const_rvalue_reference_t): Likewise.
6434         (__detail::__basic_const_iter_cat):: Likewise.
6435         (const_iterator): Likewise.
6436         (__detail::__const_sentinel): Likewise.
6437         (const_sentinel): Likewise.
6438         (basic_const_iterator): Likewise.
6439         (common_type<basic_const_iterator<_Tp>, _Up>): Likewise.
6440         (common_type<_Up, basic_const_iterator<_Tp>>): Likewise.
6441         (common_type<basic_const_iterator<_Tp>, basic_const_iterator<Up>>):
6442         Likewise.
6443         (make_const_iterator): Define for C++23.
6444         (make_const_sentinel): Likewise.
6445         * include/std/ranges (__cpp_lib_ranges_as_const): Likewise.
6446         (as_const_view): Likewise.
6447         (enable_borrowed_range<as_const_view>): Likewise.
6448         (views::__detail::__is_ref_view): Likewise.
6449         (views::__detail::__can_is_const_view): Likewise.
6450         (views::_AsConst, views::as_const): Likewise.
6451         * include/std/span (span::const_iterator): Likewise.
6452         (span::const_reverse_iterator): Likewise.
6453         (span::cbegin): Likewise.
6454         (span::cend): Likewise.
6455         (span::crbegin): Likewise.
6456         (span::crend): Likewise.
6457         * include/std/version (__cpp_lib_ranges_as_const): Likewise.
6458         * testsuite/std/ranges/adaptors/join.cc (test06): Adjust to
6459         behave independently of C++20 vs C++23.
6460         * testsuite/std/ranges/version_c++23.cc: Verify value of
6461         __cpp_lib_ranges_as_const macro.
6462         * testsuite/24_iterators/const_iterator/1.cc: New test.
6463         * testsuite/std/ranges/adaptors/as_const/1.cc: New test.
6464
6465 2023-04-14  Patrick Palka  <ppalka@redhat.com>
6466
6467         * include/bits/ranges_base.h (__cust_access::__as_const)
6468         (__cust_access::_CBegin, __cust::cbegin)
6469         (__cust_access::_CEnd, __cust::cend)
6470         (__cust_access::_CRBegin, __cust::crbegin)
6471         (__cust_access::_CREnd, __cust::crend)
6472         (__cust_access::_CData, __cust::cdata): Move down definitions to
6473         shortly after the definition of input_range.
6474
6475 2023-04-14  Patrick Palka  <ppalka@redhat.com>
6476
6477         * include/bits/ranges_algo.h: Include <optional> for C++23.
6478         (__cpp_lib_fold): Define for C++23.
6479         (in_value_result): Likewise.
6480         (__detail::__flipped): Likewise.
6481         (__detail::__indirectly_binary_left_foldable_impl): Likewise.
6482         (__detail::__indirectly_binary_left_foldable): Likewise.
6483         (___detail:__indirectly_binary_right_foldable): Likewise.
6484         (fold_left_with_iter_result): Likewise.
6485         (__fold_left_with_iter_fn, fold_left_with_iter): Likewise.
6486         (__fold_left_fn, fold_left): Likewise.
6487         (__fold_left_first_with_iter_fn, fold_left_first_with_iter):
6488         Likewise.
6489         (__fold_left_first_fn, fold_left_first): Likewise.
6490         (__fold_right_fn, fold_right): Likewise.
6491         (__fold_right_last_fn, fold_right_last): Likewise.
6492         * include/std/version (__cpp_lib_fold): Likewise.
6493         * testsuite/25_algorithms/fold_left/1.cc: New test.
6494         * testsuite/25_algorithms/fold_right/1.cc: New test.
6495
6496 2023-04-14  Jonathan Wakely  <jwakely@redhat.com>
6497
6498         * include/std/format (formatter): Add comment to deleted default
6499         constructor of primary template.
6500         (_Checking_scanner): Add static_assert.
6501
6502 2023-04-12  Jonathan Wakely  <jwakely@redhat.com>
6503
6504         * doc/xml/manual/using.xml: Document libstdc++exp.a library.
6505         * doc/html/*: Regenerate.
6506
6507 2023-04-12  Jonathan Wakely  <jwakely@redhat.com>
6508
6509         * testsuite/17_intro/names.cc [_AIX]: Do not define policy.
6510         * testsuite/19_diagnostics/error_code/cons/lwg3629.cc: Rename
6511         namespace to avoid clashing with libc struct.
6512         * testsuite/19_diagnostics/error_condition/cons/lwg3629.cc:
6513         Likewise.
6514         * testsuite/23_containers/unordered_map/96088.cc: Skip on AIX.
6515         * testsuite/23_containers/unordered_multimap/96088.cc: Likewise.
6516         * testsuite/23_containers/unordered_multiset/96088.cc: Likewise.
6517         * testsuite/23_containers/unordered_set/96088.cc: Likewise.
6518         * testsuite/experimental/synchronized_value.cc: Require gthreads
6519         and add missing option for pthreads targets.
6520
6521 2023-04-12  Patrick Palka  <ppalka@redhat.com>
6522
6523         * include/std/ranges (__cpp_lib_ranges_enumerate): Define
6524         for C++23.
6525         (__detail::__range_with_movable_reference): Likewise.
6526         (enumerate_view): Likewise.
6527         (enumerate_view::_Iterator): Likewise.
6528         (enumerate_view::_Sentinel): Likewise.
6529         (views::__detail::__can_enumerate_view): Likewise.
6530         (views::_Enumerate, views::enumerate): Likewise.
6531         * include/std/version (__cpp_lib_ranges_enumerate): Likewise.
6532         * testsuite/std/ranges/version_c++23.cc: Verify value of
6533         __cpp_lib_ranges_enumerate.
6534         * testsuite/std/ranges/adaptors/enumerate/1.cc: New test.
6535
6536 2023-04-12  Patrick Palka  <ppalka@redhat.com>
6537
6538         * include/std/ranges (lazy_split_view::_OuterIter::_OuterIter):
6539         Propagate _M_trailing_empty in the const-converting constructor
6540         as per LWG 3904.
6541         * testsuite/std/ranges/adaptors/adjacent/1.cc (test04): Correct
6542         assertion.
6543         * testsuite/std/ranges/adaptors/lazy_split.cc (test12): New test.
6544
6545 2023-04-12  Patrick Palka  <ppalka@redhat.com>
6546
6547         * src/c++17/floating_from_chars.cc: Include <algorithm>,
6548         <iterator>, <limits> and <cstdint>.
6549
6550 2023-04-12  Patrick Palka  <ppalka@redhat.com>
6551
6552         PR libstdc++/108291
6553         * include/std/ranges (chunk_by_view::_M_find_next): Generalize
6554         parameter types of the lambda wrapper passed to adjacent_find.
6555         (chunk_by_view::_M_find_prev): Likewise.
6556         * testsuite/std/ranges/adaptors/chunk_by/1.cc (test04, test05):
6557         New tests.
6558
6559 2023-04-12  Jonathan Wakely  <jwakely@redhat.com>
6560
6561         PR libstdc++/109482
6562         * include/experimental/internet (basic_endpoint::basic_endpoint()):
6563         Ensure that the required union members are active. Only define
6564         as constexpr for C++20 and later.
6565         (basic_endpoint::basic_endpoint(const protocol_type&, port_type)):
6566         Likewise.
6567         * testsuite/experimental/net/internet/endpoint/cons.cc: Only
6568         check constexpr default constructor for C++20 and later.
6569         * testsuite/experimental/net/internet/endpoint/extensible.cc:
6570         Likewise.
6571
6572 2023-04-12  Jonathan Wakely  <jwakely@redhat.com>
6573
6574         * src/c++20/tzdata.zi: Import new file from 2023c release.
6575
6576 2023-04-05  Arsen Arsenović  <arsen@aarsen.me>
6577
6578         * include/precompiled/stdc++.h (C++17): Don't double-include
6579         <charconv>, once with wrong conditions.
6580         * testsuite/18_support/96817.cc: Require hosted.
6581         * testsuite/18_support/bad_exception/59392.cc: Ditto.
6582         * testsuite/20_util/scoped_allocator/108952.cc: Ditto.
6583         * testsuite/20_util/uses_allocator/lwg3527.cc: Ditto.
6584         * testsuite/29_atomics/atomic/operators/pointer_partial_void.cc:
6585         Ditto.
6586
6587 2023-04-05  Arsen Arsenović  <arsen@aarsen.me>
6588
6589         * include/bits/c++config: When __STDC_HOSTED__ is zero,
6590         disable _GLIBCXX_DEBUG and, if it was set, enable
6591         _GLIBCXX_ASSERTIONS.
6592         * testsuite/lib/libstdc++.exp (check_v3_target_debug_mode):
6593         Include <bits/c++config.h> when determining whether debug is
6594         set, in order to inherit the logic from above
6595
6596 2023-04-05  Arsen Arsenović  <arsen@aarsen.me>
6597
6598         * testsuite/17_intro/versionconflict.cc: New test.
6599         * include/std/version: Allow disabling the system_header pragma
6600         via _GLIBCXX_TESTING_SYSHDR.
6601
6602 2023-04-05  Arsen Arsenović  <arsen@aarsen.me>
6603
6604         * include/bits/unique_ptr.h (__cpp_lib_constexpr_memory):
6605         Synchronize the definition block with...
6606         * include/bits/ptr_traits.h (__cpp_lib_constexpr_memory):
6607         ... this one here.  Also define the 202202L value, rather than
6608         leaving it up to purely unique_ptr.h, so that the value is
6609         synchronized across all headers.
6610         (__gnu_debug::_Safe_iterator_base): Move into new conditional
6611         block.
6612         * include/std/memory (__cpp_lib_atomic_value_initialization):
6613         Define on freestanding under the same conditions as in
6614         atomic_base.h.
6615         * include/std/version (__cpp_lib_robust_nonmodifying_seq_ops):
6616         Also define on freestanding.
6617         (__cpp_lib_to_chars): Ditto.
6618         (__cpp_lib_gcd): Ditto.
6619         (__cpp_lib_gcd_lcm): Ditto.
6620         (__cpp_lib_raw_memory_algorithms): Ditto.
6621         (__cpp_lib_array_constexpr): Ditto.
6622         (__cpp_lib_nonmember_container_access): Ditto.
6623         (__cpp_lib_clamp): Ditto.
6624         (__cpp_lib_constexpr_char_traits): Ditto.
6625         (__cpp_lib_constexpr_string): Ditto.
6626         (__cpp_lib_sample): Ditto.
6627         (__cpp_lib_lcm): Ditto.
6628         (__cpp_lib_constexpr_iterator): Ditto.
6629         (__cpp_lib_constexpr_char_traits): Ditto.
6630         (__cpp_lib_interpolate): Ditto.
6631         (__cpp_lib_constexpr_utility): Ditto.
6632         (__cpp_lib_shift): Ditto.
6633         (__cpp_lib_ranges): Ditto.
6634         (__cpp_lib_move_iterator_concept): Ditto.
6635         (__cpp_lib_constexpr_numeric): Ditto.
6636         (__cpp_lib_constexpr_functional): Ditto.
6637         (__cpp_lib_constexpr_algorithms): Ditto.
6638         (__cpp_lib_constexpr_tuple): Ditto.
6639         (__cpp_lib_constexpr_memory): Ditto.
6640
6641 2023-04-05  John David Anglin  <danglin@gcc.gnu.org>
6642
6643         * testsuite/22_locale/locale/cons/12658_thread-2.cc: Double
6644         timeout factor on hppa*-*-*.
6645
6646 2023-04-05  Jonathan Wakely  <jwakely@redhat.com>
6647
6648         * include/bits/regex.h (sub_match::swap): New function.
6649         * testsuite/28_regex/sub_match/lwg3204.cc: New test.
6650
6651 2023-04-04  Jonathan Wakely  <jwakely@redhat.com>
6652
6653         * doc/xml/manual/extensions.xml: Remove std::bad_exception from
6654         example program.
6655         * doc/html/manual/ext_demangling.html: Regenerate.
6656
6657 2023-03-31  Jonathan Wakely  <jwakely@redhat.com>
6658
6659         PR tree-optimization/107087
6660         * include/bits/cow_string.h (basic_string::size()): Add
6661         optimizer hint that _S_empty_rep()._M_length is always zero.
6662         (basic_string::length()): Call size().
6663
6664 2023-03-31  Jonathan Wakely  <jwakely@redhat.com>
6665
6666         PR libstdc++/109339
6667         * include/std/stop_token (_Stop_state_ptr(const stop_source&)):
6668         Add attribute access with access-mode 'none'.
6669         * testsuite/30_threads/stop_token/stop_source/109339.cc: New test.
6670
6671 2023-03-31  Jonathan Wakely  <jwakely@redhat.com>
6672
6673         * include/experimental/internet (ip::basic_endpoint::_M_if_v6):
6674         Revert change from member function to data member. Fix for
6675         constant evaluation by detecting which union member is active.
6676         (ip::basic_endpoint::resize): Revert changes to update _M_is_v6
6677         flag.
6678
6679 2023-03-29  Jonathan Wakely  <jwakely@redhat.com>
6680
6681         PR libstdc++/109242
6682         * testsuite/20_util/optional/monadic/pr109340.cc: Moved to...
6683         * testsuite/20_util/optional/monadic/pr109242.cc: ...here.
6684
6685 2023-03-29  Jonathan Wakely  <jwakely@redhat.com>
6686
6687         * include/experimental/internet (ip::make_address): Implement
6688         missing overload.
6689         (ip::address_v4::broadcast()): Avoid undefined shift.
6690         (ip::basic_endpoint): Fix member functions for constexpr.
6691         (ip::basic_endpoint::_M_is_v6): Replace member function with
6692         data member, adjust member functions using it.
6693         (ip::basic_endpoint::resize): Update _M_is_v6 based on sockaddr
6694         content.
6695         * testsuite/experimental/net/internet/address/v4/cons.cc: Fix
6696         constexpr checks to work in C++14.
6697         * testsuite/experimental/net/internet/address/v4/creation.cc:
6698         Likewise.
6699         * testsuite/experimental/net/internet/endpoint/cons.cc:
6700         Likewise.
6701         * testsuite/experimental/net/internet/network/v4/cons.cc:
6702         Likewise.
6703         * testsuite/experimental/net/internet/network/v4/members.cc:
6704         Likewise.
6705         * testsuite/experimental/net/internet/endpoint/extensible.cc: New test.
6706
6707 2023-03-29  Jonathan Wakely  <jwakely@redhat.com>
6708
6709         * include/std/expected (expected::value() &): Use const lvalue
6710         for unex member passed to bad_expected_access constructor, as
6711         per LWG 3843.
6712
6713 2023-03-29  Jonathan Wakely  <jwakely@redhat.com>
6714
6715         PR libstdc++/109340
6716         * include/std/expected (expected::transform): Use
6717         std::remove_cv_t instead of std::remove_cvref_t.
6718         (expected::transform_error): Likewise.
6719         (expected<cv void, E>::transform): Likewise.
6720         (expected<cv void, E>::transform_error): Likewise.
6721         * include/std/optional (transform): Use std::remove_cv_t.
6722         * testsuite/20_util/optional/monadic/pr109340.cc: New test.
6723
6724 2023-03-29  Jonathan Wakely  <jwakely@redhat.com>
6725
6726         * include/std/optional (optional): Adjust static assertion to
6727         reject arrays and functions as well as references.
6728         * testsuite/20_util/optional/requirements_neg.cc: New test.
6729
6730 2023-03-28  Jonathan Wakely  <jwakely@redhat.com>
6731
6732         PR libstdc++/103387
6733         * include/bits/istream.tcc (istream::_M_extract(ValueT&)): Use
6734         std::use_facet instead of cached _M_num_get facet.
6735         (istream::operator>>(short&)): Likewise.
6736         (istream::operator>>(int&)): Likewise.
6737         * include/bits/ostream.tcc (ostream::_M_insert(ValueT)): Use
6738         std::use_facet instead of cached _M_num_put facet.
6739
6740 2023-03-28  Jonathan Wakely  <jwakely@redhat.com>
6741
6742         * include/bits/char_traits.h (char_traits::copy): Return without
6743         using memcpy if n==0.
6744         (char_traits::assign): Likewise for memset.
6745
6746 2023-03-28  Jonathan Wakely  <jwakely@redhat.com>
6747
6748         PR libstdc++/109299
6749         * include/bits/basic_string.h (basic_string::_M_is_local()): Add
6750         hint for compiler that local strings fit in the local buffer.
6751
6752 2023-03-28  Jonathan Wakely  <jwakely@redhat.com>
6753
6754         PR libstdc++/109288
6755         * include/std/chrono (__detail::__get_leap_second_info): Update
6756         expiry date of hardcoded leapseconds list.
6757         * src/c++20/tzdb.cc (tzdb_list::_Node::_S_read_leap_seconds()):
6758         Likewise.
6759         * src/c++20/tzdata.zi: Import new file from 2023a release.
6760         * testsuite/std/time/time_zone/get_info_local.cc: Only check
6761         transitions for Egypt up to 2014.
6762
6763 2023-03-28  Matthias Kretz  <m.kretz@gsi.de>
6764
6765         * include/experimental/bits/simd.h (is_simd_flag_type): New.
6766         (_IsSimdFlagType): New.
6767         (copy_from, copy_to, load ctors): Constrain _Flags using
6768         _IsSimdFlagType.
6769
6770 2023-03-28  Matthias Kretz  <m.kretz@gsi.de>
6771
6772         * include/experimental/bits/simd_x86.h (_SimdImplX86): Use
6773         _Base::_S_divides if the optimized _S_divides function is hidden
6774         via the preprocessor.
6775
6776 2023-03-27  Jakub Jelinek  <jakub@redhat.com>
6777
6778         * testsuite/experimental/net/timer/waitable/dest.cc: Avoid -Wformat
6779         warning if size_t is not unsigned long.
6780
6781 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
6782
6783         * include/bits/shared_ptr_atomic.h (atomic::operator=(nullptr_t)):
6784         Add overload, as per LWG 3893.
6785         * testsuite/20_util/shared_ptr/atomic/atomic_shared_ptr.cc:
6786         Check assignment from nullptr.
6787
6788 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
6789
6790         * include/std/format (formatter<const charT[N], charT>): Do not
6791         define partial speclialization, as per LWG 3833.
6792         * testsuite/std/format/formatter/requirements.cc: Check it.
6793
6794 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
6795
6796         * include/std/utility (__cpp_lib_constexpr_algorithms): Define,
6797         as per LWG 3792.
6798         * testsuite/20_util/exchange/constexpr.cc: Check for it.
6799
6800 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
6801
6802         * include/std/version (__cpp_lib_format): Define.
6803         * testsuite/std/format/functions/format.cc: Check it.
6804
6805 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
6806
6807         * include/bits/basic_string.tcc (basic_string::resize_and_overwrite):
6808         Pass rvalues to the callback, as now allowed by LWG 3645.
6809         Enforce preconditions on the return value.
6810         * testsuite/21_strings/basic_string/capacity/char/resize_and_overwrite.cc:
6811         Adjust.
6812
6813 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
6814
6815         * include/std/format: Add a comment noting that the resolution
6816         of LWG 3720 has been applied..
6817
6818 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
6819
6820         * include/bits/regex.h (match_results): Add allocator-extended
6821         copy and move constructors, as per LWG 2195.
6822         * testsuite/28_regex/match_results/ctors/char/alloc.cc: New test.
6823
6824 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
6825
6826         * include/bits/stream_iterator.h (istream_iterator): Add
6827         constexpr to copy constructor, as per LWG 3600.
6828         * testsuite/24_iterators/istream_iterator/cons/constexpr.cc:
6829         Check copy construction.
6830
6831 2023-03-21  Matthias Kretz  <m.kretz@gsi.de>
6832
6833         * include/experimental/bits/simd_x86.h
6834         (_SimdImplX86::_S_divides): Replace test for __GCC_IEC_559 == 0
6835         with __RECIPROCAL_MATH__.
6836
6837 2023-03-21  Matthias Kretz  <m.kretz@gsi.de>
6838
6839         * include/experimental/bits/simd_detail.h: Don't define
6840         _GLIBCXX_SIMD_WORKAROUND_PR90993 for Clang.
6841         * include/experimental/bits/simd_x86.h (_S_divides): Remove
6842         check for __clang__.
6843
6844 2023-03-21  Matthias Kretz  <m.kretz@gsi.de>
6845
6846         * include/experimental/bits/simd_detail.h: Don't declare the
6847         simd API as constexpr with Clang.
6848         * include/experimental/bits/simd_x86.h (__movm): New.
6849         (_S_blend_avx512): Resolve FIXME. Implement blend using __movm
6850         and ?:.
6851         (_SimdImplX86::_S_masked_unary): Clang does not implement the
6852         same builtins. Implement the function using __movm, ?:, and -
6853         operators on vector_size types instead.
6854
6855 2023-03-21  Matthias Kretz  <m.kretz@gsi.de>
6856
6857         * testsuite/experimental/simd/tests/operators.cc: Clang doesn't
6858         define __GCC_IEC_559. Use __STDC_IEC_559__ instead.
6859
6860 2023-03-20  Jonathan Wakely  <jwakely@redhat.com>
6861
6862         * src/filesystem/ops-common.h (get_temp_directory_from_env): Fix
6863         formatting.
6864
6865 2023-03-20  Marek Polacek  <polacek@redhat.com>
6866
6867         PR c++/109159
6868         * testsuite/20_util/pair/cons/explicit_construct.cc: Adjust dg-error.
6869         * testsuite/20_util/tuple/cons/explicit_construct.cc: Likewise.
6870         * testsuite/23_containers/span/explicit.cc: Likewise.
6871
6872 2023-03-20  Jonathan Wakely  <jwakely@redhat.com>
6873
6874         PR libstdc++/109182
6875         * include/std/expected (expected<void>::expected(in_place_t)):
6876         Remove template-head.
6877
6878 2023-03-18  Jonathan Wakely  <jwakely@redhat.com>
6879
6880         PR libstdc++/109165
6881         * testsuite/18_support/coroutines/hash.cc: Use const object
6882         in second call.
6883
6884 2023-03-17  Jonathan Wakely  <jwakely@redhat.com>
6885
6886         PR libstdc++/109165
6887         * include/std/coroutine (hash<>::operator()): Add const.
6888         * testsuite/18_support/coroutines/hash.cc: New test.
6889
6890 2023-03-14  Patrick Palka  <ppalka@redhat.com>
6891
6892         PR libstdc++/109111
6893         * include/std/ranges (repeat_view): Remove redundant parentheses
6894         in requires-clause.
6895         (repeat_view::_Iterator): Correct the requires-clause.
6896
6897 2023-03-14  Patrick Palka  <ppalka@redhat.com>
6898
6899         * include/bits/stl_iterator.h (move_iterator::_S_iter_concept):
6900         Define.
6901         (__cpp_lib_move_iterator_concept): Define for C++20.
6902         (move_iterator::iterator_concept): Strengthen as per P2520R0.
6903         * include/std/version (__cpp_lib_move_iterator_concept): Define
6904         for C++20.
6905         * testsuite/24_iterators/move_iterator/p2520r0.cc: New test.
6906
6907 2023-03-14  Patrick Palka  <ppalka@redhat.com>
6908
6909         * include/bits/ranges_util.h (view_interface::empty): Add
6910         preferred overloads that use ranges::size when the range is
6911         sized as per LWG 3715.
6912         * testsuite/std/ranges/adaptors/lwg3715.cc: New test.
6913
6914 2023-03-14  Jonathan Wakely  <jwakely@redhat.com>
6915
6916         * include/bits/chrono.h (__is_duration_v, __is_time_point_v):
6917         Only define for C++17 and later.
6918
6919 2023-03-14  Jonathan Wakely  <jwakely@redhat.com>
6920
6921         * src/Makefile.am: Add comment about linker script fragments.
6922         * src/Makefile.in: Regenerate.
6923
6924 2023-03-14  Jonathan Wakely  <jwakely@redhat.com>
6925
6926         PR libstdc++/62196
6927         * include/bits/mask_array.h (mask_array): Add assertions to
6928         assignment operators.
6929         * include/std/valarray (valarray::operator[](valarray<bool>)):
6930         Add assertions.
6931         * testsuite/26_numerics/valarray/mask-1_neg.cc: New test.
6932         * testsuite/26_numerics/valarray/mask-2_neg.cc: New test.
6933         * testsuite/26_numerics/valarray/mask-3_neg.cc: New test.
6934         * testsuite/26_numerics/valarray/mask-4_neg.cc: New test.
6935         * testsuite/26_numerics/valarray/mask-5_neg.cc: New test.
6936         * testsuite/26_numerics/valarray/mask-6_neg.cc: New test.
6937         * testsuite/26_numerics/valarray/mask-7_neg.cc: New test.
6938         * testsuite/26_numerics/valarray/mask-8_neg.cc: New test.
6939         * testsuite/26_numerics/valarray/mask.cc: New test.
6940
6941 2023-03-13  Jakub Jelinek  <jakub@redhat.com>
6942
6943         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
6944         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
6945
6946 2023-03-13  Jonathan Wakely  <jwakely@redhat.com>
6947
6948         * doc/Makefile.am: Add comment referring to documentation.
6949         * doc/Makefile.in: Regenerate.
6950
6951 2023-03-13  Jonathan Wakely  <jwakely@redhat.com>
6952
6953         * doc/html/*: Regenerate.
6954
6955 2023-03-13  Jonny Grant  <jg@jguk.org>
6956
6957         * doc/xml/faq.xml: Update copyright year.
6958
6959 2023-03-13  Jonathan Wakely  <jwakely@redhat.com>
6960
6961         * include/bits/allocator.h: Fix typo in comment.
6962
6963 2023-03-12  Jakub Jelinek  <jakub@redhat.com>
6964
6965         * config/abi/pre/gnu.ver (CXXABI_1.3.14): Also export __bf16 tinfos
6966         if it isn't mangled as DF16b but u6__bf16.
6967
6968 2023-03-12  Gerald Pfeifer  <gerald@pfeifer.com>
6969
6970         * doc/xml/manual/documentation_hacking.xml: Move www.graphviz.org
6971         to https.
6972         * doc/html/manual/documentation_hacking.html: Regenerate.
6973
6974 2023-03-10  Jonathan Wakely  <jwakely@redhat.com>
6975
6976         PR libstdc++/109064
6977         * python/libstdcxx/v6/xmethods.py (SharedPtrUseCountWorker):
6978         Remove self-recursion in __init__. Add missing _supports.
6979         * testsuite/libstdc++-xmethods/shared_ptr.cc: Check use_count()
6980         and unique().
6981
6982 2023-03-09  Patrick Palka  <ppalka@redhat.com>
6983
6984         * include/std/ranges
6985         (cartesian_product_view::_Iterator::_Iterator): Remove
6986         constraint on default constructor as per LWG 3849.
6987         (cartesian_product_view::_Iterator::_M_prev): Adjust position
6988         of _Nm > 0 test as per LWG 3820.
6989         (cartesian_product_view::_Iterator::_M_advance): Perform bounds
6990         checking only on sized cartesian products.
6991         * testsuite/std/ranges/cartesian_product/1.cc (test08): New test.
6992
6993 2023-03-09  Patrick Palka  <ppalka@redhat.com>
6994
6995         PR libstdc++/109024
6996         * include/std/ranges (chunk_by_view::_M_pred): Remove DMI as per
6997         LWG 3796.
6998         (repeat_view::_M_pred): Likewise.
6999         * testsuite/std/ranges/adaptors/chunk_by/1.cc (test03): New test.
7000         * testsuite/std/ranges/repeat/1.cc (test05): New test.
7001
7002 2023-03-09  Patrick Palka  <ppalka@redhat.com>
7003
7004         PR libstdc++/108362
7005         * include/std/ranges (__detail::__can_single_view): New concept.
7006         (_Single::operator()): Constrain it.  Move [[nodiscard]] to the
7007         end of the function declarator.
7008         (__detail::__can_iota_view): New concept.
7009         (_Iota::operator()): Constrain it.  Move [[nodiscard]] to the
7010         end of the function declarator.
7011         (__detail::__can_istream_view): New concept.
7012         (_Istream::operator()): Constrain it.  Move [[nodiscard]] to the
7013         end of the function declarator.
7014         * testsuite/std/ranges/iota/iota_view.cc (test07): New test.
7015         * testsuite/std/ranges/istream_view.cc (test08): New test.
7016         * testsuite/std/ranges/single_view.cc (test07): New test.
7017
7018 2023-03-09  Patrick Palka  <ppalka@redhat.com>
7019
7020         PR libstdc++/107572
7021         * include/std/ranges (cartesian_product_view::end): When
7022         building the tuple of iterators, avoid calling ranges::begin on
7023         the first range if __empty_tail is false.
7024         * testsuite/std/ranges/cartesian_product/1.cc (test07): New test.
7025
7026 2023-03-09  Jonathan Wakely  <jwakely@redhat.com>
7027
7028         PR libstdc++/108882
7029         * config/os/gnu-linux/ldbl-ieee128-extra.ver: Fix incorrect
7030         patterns.
7031
7032 2023-03-07  Jakub Jelinek  <jakub@redhat.com>
7033
7034         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
7035         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
7036         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
7037         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
7038         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
7039
7040 2023-03-07  Jonathan Wakely  <jwakely@redhat.com>
7041
7042         PR libstdc++/108882
7043         * config/abi/pre/gnu.ver (GLIBCXX_3.4.31): Adjust patterns to
7044         not match symbols in namespace std::__gnu_cxx11_ieee128.
7045         * config/os/gnu-linux/ldbl-ieee128-extra.ver: Add patterns for
7046         std::__gnu_cxx11_ieee128::money_{get,put}.
7047
7048 2023-03-07  Jonathan Wakely  <jwakely@redhat.com>
7049
7050         * libsupc++/eh_personality.cc: Fix spelling in comment.
7051
7052 2023-03-03  Alexandre Oliva  <oliva@adacore.com>
7053
7054         * testsuite/30_threads/async/async.cc (test04): Initialize
7055         steady_start, renamed from steady_begin, next to slow_start.
7056         Increase tolerance for final wait.
7057
7058 2023-03-03  Alexandre Oliva  <oliva@adacore.com>
7059
7060         * testsuite/libstdc++-prettyprinters/80276.cc: Add
7061         std::string to debug info.
7062         * testsuite/libstdc++-prettyprinters/libfundts.cc: Likewise.
7063
7064 2023-03-03  Alexandre Oliva  <oliva@adacore.com>
7065
7066         PR libstdc++/104852
7067         PR libstdc++/95989
7068         PR libstdc++/52590
7069         * include/bits/std_thread.h (thread::_M_thread_deps): New
7070         static implicitly-inline member function.
7071         (std::thread template ctor): Pass it to _M_start_thread.
7072         * src/c++11/thread.cc (thread::_M_start_thread): Name depend
7073         parameter, force it live on entry.
7074
7075 2023-03-03  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
7076
7077         * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
7078         * config/abi/post/i386-solaris/amd64/baseline_symbols.txt:
7079         Likewise.
7080         * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
7081         * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
7082         Likewise.
7083
7084 2023-03-01  Jonathan Wakely  <jwakely@redhat.com>
7085
7086         * include/bits/cow_string.h: Fix typo in comment.
7087
7088 2023-03-01  Jonathan Wakely  <jwakely@redhat.com>
7089
7090         * src/c++20/tzdb.cc (chrono::tzdb::current_zone()) Use "UTC" if
7091         current time zone cannot be determined.
7092         * testsuite/std/time/tzdb/1.cc: Remove conditions based on
7093         HAVE_TZDB macro and test all members unconditionally.
7094
7095 2023-02-28  Jonathan Wakely  <jwakely@redhat.com>
7096
7097         PR libstdc++/108952
7098         * include/bits/uses_allocator_args.h
7099         (uses_allocator_construction_args): Implement LWG 3527.
7100         * testsuite/20_util/pair/astuple/get-2.cc: New test.
7101         * testsuite/20_util/scoped_allocator/108952.cc: New test.
7102         * testsuite/20_util/uses_allocator/lwg3527.cc: New test.
7103
7104 2023-02-28  Jonathan Wakely  <jwakely@redhat.com>
7105
7106         PR libstdc++/108846
7107         * include/bits/stl_algobase.h (__copy_move<false, false, RA>)
7108         Add __assign_one static member function.
7109         (__copy_move<true, false, RA>): Likewise.
7110         (__copy_move<IsMove, true, RA>): Do not use memmove for a single
7111         value.
7112         (__copy_move_backward<IsMove, true, RA>): Likewise.
7113         * testsuite/25_algorithms/copy/108846.cc: New test.
7114         * testsuite/25_algorithms/copy_backward/108846.cc: New test.
7115         * testsuite/25_algorithms/copy_n/108846.cc: New test.
7116         * testsuite/25_algorithms/move/108846.cc: New test.
7117         * testsuite/25_algorithms/move_backward/108846.cc: New test.
7118
7119 2023-02-28  Jonathan Wakely  <jwakely@redhat.com>
7120
7121         * src/c++11/codecvt.cc: Add [[likely]] and [[unlikely]]
7122         attributes.
7123
7124 2023-02-27  Jonathan Wakely  <jwakely@redhat.com>
7125
7126         * include/bits/basic_ios.h (basic_ios::_M_setstate): Add
7127         caveat to comment.
7128         * include/bits/basic_string.h (resize_and_overwrite): Add
7129         doxygen comment.
7130
7131 2023-02-24  Matthias Kretz  <m.kretz@gsi.de>
7132
7133         * include/experimental/bits/simd.h: Line breaks and indenting
7134         fixed to follow the libstdc++ standard.
7135         * include/experimental/bits/simd_builtin.h: Likewise.
7136         * include/experimental/bits/simd_fixed_size.h: Likewise.
7137         * include/experimental/bits/simd_neon.h: Likewise.
7138         * include/experimental/bits/simd_ppc.h: Likewise.
7139         * include/experimental/bits/simd_scalar.h: Likewise.
7140         * include/experimental/bits/simd_x86.h: Likewise.
7141
7142 2023-02-24  Matthias Kretz  <m.kretz@gsi.de>
7143
7144         PR libstdc++/108030
7145         * include/experimental/bits/simd_fixed_size.h
7146         (_SimdImplFixedSize::_S_broadcast): Replace inline with
7147         _GLIBCXX_SIMD_INTRINSIC.
7148         (_SimdImplFixedSize::_S_generate): Likewise.
7149         (_SimdImplFixedSize::_S_load): Likewise.
7150         (_SimdImplFixedSize::_S_masked_load): Likewise.
7151         (_SimdImplFixedSize::_S_store): Likewise.
7152         (_SimdImplFixedSize::_S_masked_store): Likewise.
7153         (_SimdImplFixedSize::_S_min): Likewise.
7154         (_SimdImplFixedSize::_S_max): Likewise.
7155         (_SimdImplFixedSize::_S_complement): Likewise.
7156         (_SimdImplFixedSize::_S_unary_minus): Likewise.
7157         (_SimdImplFixedSize::_S_plus): Likewise.
7158         (_SimdImplFixedSize::_S_minus): Likewise.
7159         (_SimdImplFixedSize::_S_multiplies): Likewise.
7160         (_SimdImplFixedSize::_S_divides): Likewise.
7161         (_SimdImplFixedSize::_S_modulus): Likewise.
7162         (_SimdImplFixedSize::_S_bit_and): Likewise.
7163         (_SimdImplFixedSize::_S_bit_or): Likewise.
7164         (_SimdImplFixedSize::_S_bit_xor): Likewise.
7165         (_SimdImplFixedSize::_S_bit_shift_left): Likewise.
7166         (_SimdImplFixedSize::_S_bit_shift_right): Likewise.
7167         (_SimdImplFixedSize::_S_remquo): Add inline keyword (to be
7168         explicit about not always-inline, yet).
7169         (_SimdImplFixedSize::_S_isinf): Likewise.
7170         (_SimdImplFixedSize::_S_isfinite): Likewise.
7171         (_SimdImplFixedSize::_S_isnan): Likewise.
7172         (_SimdImplFixedSize::_S_isnormal): Likewise.
7173         (_SimdImplFixedSize::_S_signbit): Likewise.
7174
7175 2023-02-24  Matthias Kretz  <m.kretz@gsi.de>
7176
7177         PR libstdc++/108856
7178         * include/experimental/bits/simd_builtin.h
7179         (_SimdImplBuiltin::_S_masked_unary): More efficient
7180         implementation of masked inc-/decrement for integers and floats
7181         without AVX2.
7182         * include/experimental/bits/simd_x86.h
7183         (_SimdImplX86::_S_masked_unary): New. Use AVX512 masked subtract
7184         builtins for masked inc-/decrement.
7185
7186 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
7187
7188         * include/experimental/executor (executor): Constrain template
7189         constructors.
7190
7191 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
7192
7193         * include/experimental/internet (basic_endpoint): Add missing
7194         constexpr to comparison operators.
7195         * testsuite/experimental/net/internet/endpoint/cons.cc: New test.
7196
7197 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
7198
7199         * include/experimental/internet (network_v4::netmask()): Avoid
7200         undefined shift.
7201         (network_v4::broadcast()): Optimize and fix for targets with
7202         uint_least32_t wider than 32 bits.
7203         (network_v4::to_string(const Allocator&)): Fix for custom
7204         allocators and optimize using to_chars.
7205         (operator==(const network_v4&, const network_v4&)): Add missing
7206         constexpr.
7207         (operator==(const network_v6&, const network_v6&)): Likewise.
7208         * testsuite/experimental/net/internet/network/v4/cons.cc: New test.
7209         * testsuite/experimental/net/internet/network/v4/members.cc: New test.
7210
7211 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
7212
7213         * include/experimental/internet (address_4(const bytes_type&)):
7214         Use __builtin_bit_cast if available, otherwise convert to
7215         network byte order.
7216         (address_v4::to_bytes()): Likewise, but convert from network
7217         byte order.
7218         * testsuite/experimental/net/internet/address/v4/cons.cc: Fix
7219         incorrect tests. Check for constexpr too.
7220         * testsuite/experimental/net/internet/address/v4/creation.cc:
7221         Likewise.
7222         * testsuite/experimental/net/internet/address/v4/members.cc:
7223         Check that bytes_type is a standard-layout type.
7224
7225 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
7226
7227         * include/experimental/internet (address_v4::to_string):
7228         Optimize.
7229         * testsuite/experimental/net/internet/address/v4/members.cc:
7230         Check more addresses.
7231
7232 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
7233
7234         * include/ext/aligned_buffer.h (__aligned_buffer): Add
7235         diagnostic pragmas.
7236
7237 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
7238
7239         * testsuite/std/format/arguments/lwg3810.cc: Move dg-options
7240         before dg-do.
7241
7242 2023-02-23  Matthias Kretz  <m.kretz@gsi.de>
7243
7244         * testsuite/experimental/simd/tests/reductions.cc: Introduce
7245         max_distance as the type-dependent max error.
7246
7247 2023-02-23  Matthias Kretz  <m.kretz@gsi.de>
7248
7249         * include/experimental/bits/simd_builtin.h (_S_set): Compare as
7250         int. The actual range of these indexes is very small.
7251
7252 2023-02-23  Matthias Kretz  <m.kretz@gsi.de>
7253
7254         * include/experimental/bits/simd_x86.h (_S_bit_shift_left)
7255         (_S_bit_shift_right): Declare constexpr. The implementation was
7256         already expecting constexpr evaluation.
7257
7258 2023-02-23  Matthias Kretz  <m.kretz@gsi.de>
7259
7260         PR libstdc++/108030
7261         * include/experimental/bits/simd_detail.h
7262         (_GLIBCXX_SIMD_ALWAYS_INLINE_LAMBDA): Define as empty for
7263         __clang__.
7264
7265 2023-02-23  Matthias Kretz  <m.kretz@gsi.de>
7266
7267         PR libstdc++/108030
7268         * include/experimental/bits/simd.h (__vector_broadcast):
7269         Implement via __vector_broadcast_impl instead of
7270         __call_with_n_evaluations + 2 lambdas.
7271         (__vector_broadcast_impl): New.
7272
7273 2023-02-22  Alexandre Oliva  <oliva@adacore.com>
7274
7275         * src/c++11/shared_ptr.cc (__gnu_internal::get_mutex):
7276         Avoid destruction of the mutex pool.
7277
7278 2023-02-22  Alexandre Oliva  <oliva@adacore.com>
7279
7280         * testsuite/27_io/basic_ofstream/open/char/noreplace.cc: xfail
7281         on vxworks.
7282         * testsuite/27_io/basic_ofstream/open/wchar_t/noreplace.cc:
7283         Likewise.
7284
7285 2023-02-22  Alexandre Oliva  <oliva@adacore.com>
7286
7287         * testsuite/17_intro/names.cc: Undef func on vxworks >= 7 in
7288         kernel mode.
7289
7290 2023-02-20  Andreas Schwab  <schwab@linux-m68k.org>
7291
7292         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
7293
7294 2023-02-20  Matthias Kretz  <m.kretz@gsi.de>
7295
7296         * include/experimental/bits/simd.h (__extract_part, split):
7297         Use reserved name for template parameter.
7298
7299 2023-02-20  Andreas Schwab  <schwab@suse.de>
7300
7301         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
7302
7303 2023-02-18  Gerald Pfeifer  <gerald@pfeifer.com>
7304
7305         * doc/xml/faq.xml: Switch two links to www.open-std.org to https.
7306         * doc/html/faq.html: Regenerate.
7307
7308 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
7309
7310         * include/experimental/bits/simd_math.h (__hypot): Bitcasting
7311         between scalars requires the __bit_cast helper function instead
7312         of simd_bit_cast.
7313
7314 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
7315
7316         * include/experimental/bits/simd_x86.h
7317         (_SimdImplX86::_S_not_equal_to, _SimdImplX86::_S_less)
7318         (_SimdImplX86::_S_less_equal): Do not call
7319         __builtin_is_constant_evaluated in constexpr-if.
7320
7321 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
7322
7323         * testsuite/experimental/simd/tests/bits/verify.h
7324         (verify::verify): Use %zx for size_t in format string.
7325
7326 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
7327
7328         * testsuite/experimental/simd/generate_makefile.sh: Generate and
7329         pre-compile pch.h, which includes all headers that do not depend
7330         on command-line macros.
7331         * testsuite/experimental/simd/tests/bits/main.h: New file.
7332         (iterate_abis, main): Moved from verify.h.
7333         * testsuite/experimental/simd/tests/bits/verify.h
7334         (iterate_abis, main): Moved to main.h.
7335         * testsuite/experimental/simd/tests/bits/conversions.h: Add
7336         include guard.
7337         (genHalfBits): Simplify.
7338         * testsuite/experimental/simd/tests/bits/make_vec.h: Add include
7339         guard.
7340         (make_alternating_mask): Moved from mask_loadstore.
7341         * testsuite/experimental/simd/tests/bits/mathreference.h: Add
7342         include guard.
7343         * testsuite/experimental/simd/tests/bits/test_values.h: Ditto.
7344         * testsuite/experimental/simd/tests/mask_loadstore.cc
7345         (make_mask, make_alternating_mask): Removed.
7346         * testsuite/experimental/simd/tests/mask_reductions.cc: Ditto.
7347         * testsuite/experimental/simd/tests/operators.cc (genHalfBits):
7348         Removed.
7349         * testsuite/experimental/simd/tests/abs.cc: Only include
7350         bits/main.h.
7351         Ditto.
7352         * testsuite/experimental/simd/tests/algorithms.cc: Ditto.
7353         * testsuite/experimental/simd/tests/broadcast.cc: Ditto.
7354         * testsuite/experimental/simd/tests/casts.cc: Ditto.
7355         * testsuite/experimental/simd/tests/fpclassify.cc: Ditto.
7356         * testsuite/experimental/simd/tests/frexp.cc: Ditto.
7357         * testsuite/experimental/simd/tests/generator.cc: Ditto.
7358         * testsuite/experimental/simd/tests/hypot3_fma.cc: Ditto.
7359         * testsuite/experimental/simd/tests/integer_operators.cc: Ditto.
7360         * testsuite/experimental/simd/tests/ldexp_scalbn_scalbln_modf.cc:
7361         * testsuite/experimental/simd/tests/loadstore.cc: Ditto.
7362         * testsuite/experimental/simd/tests/logarithm.cc: Ditto.
7363         * testsuite/experimental/simd/tests/mask_broadcast.cc: Ditto.
7364         * testsuite/experimental/simd/tests/mask_conversions.cc: Ditto.
7365         * testsuite/experimental/simd/tests/mask_implicit_cvt.cc: Ditto.
7366         * testsuite/experimental/simd/tests/mask_operator_cvt.cc: Ditto.
7367         * testsuite/experimental/simd/tests/mask_operators.cc: Ditto.
7368         * testsuite/experimental/simd/tests/math_1arg.cc: Ditto.
7369         * testsuite/experimental/simd/tests/math_2arg.cc: Ditto.
7370         * testsuite/experimental/simd/tests/operator_cvt.cc: Ditto.
7371         * testsuite/experimental/simd/tests/reductions.cc: Ditto.
7372         * testsuite/experimental/simd/tests/remqo.cc: Ditto.
7373         * testsuite/experimental/simd/tests/simd.cc: Ditto.
7374         * testsuite/experimental/simd/tests/sincos.cc: Ditto.
7375         * testsuite/experimental/simd/tests/split_concat.cc: Ditto.
7376         * testsuite/experimental/simd/tests/splits.cc: Ditto.
7377         * testsuite/experimental/simd/tests/trigonometric.cc: Ditto.
7378         * testsuite/experimental/simd/tests/trunc_ceil_floor.cc: Ditto.
7379         * testsuite/experimental/simd/tests/where.cc: Ditto.
7380
7381 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
7382
7383         * testsuite/experimental/simd/README.md: Document the timeout
7384         and timeout-factor directives. Minor typo fixed.
7385
7386 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
7387
7388         PR libstdc++/108030
7389         * include/experimental/bits/simd_detail.h: Define
7390         _GLIBCXX_SIMD_ALWAYS_INLINE_LAMBDA.
7391         * include/experimental/bits/simd.h: Annotate lambdas with
7392         _GLIBCXX_SIMD_ALWAYS_INLINE_LAMBDA.
7393         * include/experimental/bits/simd_builtin.h: Ditto.
7394         * include/experimental/bits/simd_converter.h: Ditto.
7395         * include/experimental/bits/simd_fixed_size.h: Ditto.
7396         * include/experimental/bits/simd_math.h: Ditto.
7397         * include/experimental/bits/simd_neon.h: Ditto.
7398         * include/experimental/bits/simd_x86.h: Ditto.
7399
7400 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
7401
7402         * include/experimental/bits/simd.h
7403         (_SimdWrapper::_M_is_constprop_none_of)
7404         (_SimdWrapper::_M_is_constprop_all_of): Return false unless the
7405         computed result still satisfies __builtin_constant_p.
7406
7407 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
7408
7409         * testsuite/std/format/arguments/lwg3810.cc: Replace UTF-8
7410         ellipsis character.
7411
7412 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
7413
7414         * include/Makefile.am: Add new header.
7415         * include/Makefile.in: Regenerate.
7416         * include/experimental/synchronized_value: New file.
7417         * testsuite/experimental/synchronized_value.cc: New test.
7418
7419 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
7420
7421         * include/experimental/optional: Fix header name in comment.
7422
7423 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
7424
7425         * include/std/format (__format::_Arg_store): New class template.
7426         (basic_format_args): Remove nested type _Store and add deduction
7427         guide from _Arg_store.
7428         (basic_format_arg, make_format_args): Adjust.
7429         * testsuite/std/format/arguments/lwg3810.cc: New test.
7430
7431 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
7432
7433         * include/bits/stl_pair.h (pair) [C++20]: Add non-dangling
7434         constraints to constructors and add deleted overloads for the
7435         dangling cases, as per P2255R2.
7436         (pair) [!C++20 && _GLIBCXX_DEBUG]: Add static assertions to
7437         make dangling cases ill-formed.
7438         * testsuite/20_util/pair/dangling_ref.cc: New test.
7439
7440 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
7441
7442         * testsuite/17_intro/names_pstl.cc: Require et tbb_backend.
7443
7444 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
7445
7446         * include/ext/throw_allocator.h: Use reserved names for
7447         parameters.
7448
7449 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
7450
7451         * testsuite/17_intro/names_pstl.cc: Add space after effective
7452         target name.
7453
7454 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
7455
7456         * include/pstl/algorithm_fwd.h (__pattern_search_n)
7457         (__brick_unique_copy, __brick_adjacent_find)
7458         (__brick_generate_n, __pattern_generate_n): Use reserved names
7459         for parameters.
7460         * include/pstl/algorithm_impl.h (__brick_unique_copy)
7461         (__pattern_reverse, __brick_generate_n): Likewise.
7462         * include/pstl/execution_impl.h (__prefer_unsequenced_tag)
7463         (__prefer_parallel_tag): Likewise.
7464         * include/pstl/glue_algorithm_impl.h (transform): Likewise.
7465         * include/pstl/glue_numeric_defs.h (adjacent_difference):
7466         Likewise.
7467         * include/pstl/numeric_impl.h (__brick_adjacent_difference):
7468         Likewise.
7469         * include/pstl/parallel_backend_tbb.h (__merge_func): Likewise.
7470         * include/pstl/unseq_backend_simd.h (_Combiner)
7471         (__simd_min_element, __simd_minmax_element): Likewise.
7472         * testsuite/17_intro/names_pstl.cc: New test.
7473
7474 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
7475
7476         * include/bits/fs_ops.h (create_directory): Use reserved name
7477         for parameter.
7478         * include/bits/ranges_algo.h (__contains_subrange_fn):
7479         Likewise.
7480         * include/bits/regex_automaton.h (_State_base::_M_print):
7481         Likewise.
7482         * include/bits/regex_automaton.tcc(_State_base::_M_print):
7483         Likewise.
7484         * include/bits/regex_scanner.tcc(_Scanner::_M_print): Likewise.
7485         * include/experimental/bits/fs_ops.h (create_directory):
7486         Likewise.
7487         * include/std/mutex (timed_mutex::_M_clocklock): Likewise.
7488         (recursive_timed_mutex:_M_clocklock): Likewise.
7489         * include/std/tuple (basic_common_reference): Likewise.
7490         * libsupc++/cxxabi_init_exception.h
7491         (__cxa_init_primary_exception): Likewise.
7492         * testsuite/17_intro/names.cc: Add checks.
7493
7494 2023-02-14  Gerald Pfeifer  <gerald@pfeifer.com>
7495
7496         * doc/xml/manual/status_cxx2017.xml: Update an open-std.org link
7497         to www.open-std.org and https.
7498         * doc/html/manual/status.html: Regenerate.
7499
7500 2023-02-14  Thomas W Rodgers  <rodgert@twrodgers.com>
7501
7502         PR libstdc++/103934
7503         * include/std/atomic (atomic_flag_wait): Add.
7504         (atomic_flag_wait_explicit): Add.
7505         (atomic_flag_notify): Add.
7506         (atomic_flag_notify_explicit): Add.
7507         * testsuite/29_atomics/atomic_flag/wait_notify/1.cc:
7508         Add test case to cover missing atomic_flag free functions.
7509
7510 2023-02-14  Thomas W Rodgers  <rodgert@twrodgers.com>
7511
7512         PR libstdc++/103934
7513         * include/std/atomic (atomic_flag_test): Add.
7514         (atomic_flag_test_explicit): Add.
7515         * testsuite/29_atomics/atomic_flag/test/explicit.cc: Add
7516         test case to cover missing atomic_flag free functions.
7517         * testsuite/29_atomics/atomic_flag/test/implicit.cc:
7518         Likewise.
7519
7520 2023-02-13  Gerald Pfeifer  <gerald@pfeifer.com>
7521
7522         * doc/xml/manual/policy_data_structures_biblio.xml: Adjust
7523         "The Component Object Model" reference.
7524         * doc/html/manual/policy_data_structures.html: Regenerate.
7525
7526 2023-02-12  Gerald Pfeifer  <gerald@pfeifer.com>
7527
7528         * doc/xml/manual/containers.xml: Tweak a link to N1780
7529         (C++ standard).
7530         * doc/html/manual/associative.html: Regenerate.
7531
7532 2023-02-12  Gerald Pfeifer  <gerald@pfeifer.com>
7533
7534         * doc/xml/manual/ctype.xml: Change www.unix.org to unix.org.
7535         * doc/html/manual/facets.html: Regenerate.
7536
7537 2023-02-11  Gerald Pfeifer  <gerald@pfeifer.com>
7538
7539         * doc/xml/manual/policy_data_structures_biblio.xml: Update
7540         link to "Worst-case efficient priority queues".
7541         * doc/html/manual/policy_data_structures.html: Regenerate.
7542
7543 2023-02-06  Arsen Arsenović  <arsen@aarsen.me>
7544
7545         * doc/xml/manual/using.xml: Document newly-freestanding
7546         headers and the effect of the -ffreestanding flag.
7547         * doc/xml/manual/status_cxx2023.xml: Document P1642R11 as
7548         completed.
7549         * doc/xml/manual/configure.xml: Document that hosted installs
7550         respect __STDC_HOSTED__.
7551         * doc/xml/manual/test.xml: Document how to run tests in
7552         freestanding mode.
7553         * doc/html/*: Regenerate.
7554
7555 2023-02-06  Jonathan Wakely  <jwakely@redhat.com>
7556
7557         * include/bits/ranges_algo.h (__find_last_fn): Rename T to _Tp.
7558         (__find_last_if_fn): Likewise.
7559
7560 2023-02-06  Jonathan Wakely  <jwakely@redhat.com>
7561
7562         * include/std/type_traits: Add diagnostic pragmas around
7563         references to deprecated std::aligned_storage and
7564         std::aligned_union traits.
7565         * testsuite/20_util/aligned_storage/requirements/alias_decl.cc:
7566         Add dg-warning for et c++23.
7567         * testsuite/20_util/aligned_storage/requirements/explicit_instantiation.cc:
7568         Likewise.
7569         * testsuite/20_util/aligned_storage/value.cc: Likewise.
7570         * testsuite/20_util/aligned_union/1.cc: Likewise.
7571         * testsuite/20_util/aligned_union/requirements/alias_decl.cc:
7572         Likewise.
7573
7574 2023-02-06  Nathaniel Shead  <nathanieloshead@gmail.com>
7575
7576         * doc/doxygen/user.cfg.in (PREDEFINED): Add new macros.
7577         * include/bits/c++config (_GLIBCXX23_DEPRECATED)
7578         (_GLIBCXX23_DEPRECATED_SUGGEST): New macros.
7579         * include/std/type_traits (aligned_storage, aligned_union)
7580         (aligned_storage_t, aligned_union_t): Deprecate for C++23.
7581         * testsuite/20_util/aligned_storage/deprecated-2b.cc: New test.
7582         * testsuite/20_util/aligned_union/deprecated-2b.cc: New test.
7583
7584 2023-02-06  Nathaniel Shead  <nathanieloshead@gmail.com>
7585
7586         * doc/doxygen/user.cfg.in (PREDEFINED): Update macros.
7587         * include/bits/c++config (_GLIBCXX20_DEPRECATED): Make
7588         consistent with other 'deprecated' macros.
7589         * include/std/type_traits (is_pod, is_pod_v): Use
7590         _GLIBCXX20_DEPRECATED_SUGGEST instead.
7591
7592 2023-02-06  Arsen Arsenović  <arsen@aarsen.me>
7593
7594         * Makefile.am [!_GLIBCXX_HOSTED]: Enable src/ subdirectory.
7595         * Makefile.in: Regenerate.
7596         * src/Makefile.am [!_GLIBCXX_HOSTED]: Omit compatibility files.
7597         There's no history to be compatible with.
7598         * src/c++11/Makefile.am [!_GLIBCXX_HOSTED]: Omit hosted-only
7599         source files from the build.
7600         * src/c++17/Makefile.am [!_GLIBCXX_HOSTED]: Likewise.
7601         * src/c++20/Makefile.am [!_GLIBCXX_HOSTED]: Likewise.
7602         * src/c++98/Makefile.am [!_GLIBCXX_HOSTED]: Likewise.
7603         * src/Makefile.in: Regenerate.
7604         * src/c++11/Makefile.in: Regenerate.
7605         * src/c++17/Makefile.in: Regenerate.
7606         * src/c++20/Makefile.in: Regenerate.
7607         * src/c++98/Makefile.in: Regenerate.
7608
7609 2023-02-06  Jonathan Wakely  <jwakely@redhat.com>
7610
7611         * src/Makefile.am [GLIBCXX_HOSTED] (SUBDIRS): Do not add
7612         filesystem, libbacktrace and experimental.
7613         * src/Makefile.in: Regenerate.
7614
7615 2023-02-04  Hans-Peter Nilsson  <hp@axis.com>
7616
7617         PR libstdc++/108672
7618         * include/pstl/unseq_backend_simd.h (__simd_or): Use __INT32_TYPE__
7619         instead of int32_t.
7620
7621 2023-02-04  Gerald Pfeifer  <gerald@pfeifer.com>
7622
7623         * doc/xml/manual/documentation_hacking.xml: Adjust link to pdftex.
7624         * doc/html/manual/documentation_hacking.html: Regenerate.
7625
7626 2023-02-04  François Dumont  <fdumont@gcc.gnu.org>
7627
7628         * include/bits/basic_string.h (operator=(basic_string&&)): Transfer move-to
7629         storage to the move-from instance when allocators are equal.
7630         * testsuite/21_strings/basic_string/allocator/char/move_assign.cc (test04):
7631         New test case.
7632
7633 2023-02-03  Samuel Thibault  <samuel.thibault@gnu.org>
7634
7635         * config/os/gnu-linux/os_defines.h [!__linux__]
7636         (_GLIBCXX_NATIVE_THREAD_ID, _GLIBCXX_GTHREAD_USE_WEAK): Do not define.
7637
7638 2023-02-03  Patrick Palka  <ppalka@redhat.com>
7639
7640         * include/bits/ranges_algo.h (__find_last_fn, find_last):
7641         Define.
7642         (__find_last_if_fn, find_last_if): Define.
7643         (__find_last_if_not_fn, find_last_if_not): Define.
7644         * testsuite/25_algorithms/find_last/1.cc: New test.
7645         * testsuite/25_algorithms/find_last_if/1.cc: New test.
7646         * testsuite/25_algorithms/find_last_if_not/1.cc: New test.
7647
7648 2023-02-03  Patrick Palka  <ppalka@redhat.com>
7649
7650         * include/bits/ranges_algo.h (out_value_result): Define.
7651         (iota_result): Define.
7652         (__iota_fn, iota): Define.
7653         * testsuite/25_algorithms/iota/1.cc: New test.
7654
7655 2023-02-03  Patrick Palka  <ppalka@redhat.com>
7656
7657         * include/bits/ranges_algo.h (__contains_fn, contains): Define.
7658         (__contains_subrange_fn, contains_subrange): Define.
7659         * testsuite/25_algorithms/contains/1.cc: New test.
7660         * testsuite/25_algorithms/contains_subrange/1.cc: New test.
7661
7662 2023-02-02  Gerald Pfeifer  <gerald@pfeifer.com>
7663
7664         * doc/xml/manual/abi.xml: Tweak link to ABIcheck project.
7665         * doc/html/manual/abi.html: Regenerate.
7666
7667 2023-02-02  Jonathan Wakely  <jwakely@redhat.com>
7668
7669         * src/filesystem/ops-common.h [AVR] (__unsupported): Always use
7670         errc::function_not_supported instead of errc::not_supported.
7671
7672 2023-02-02  Jonathan Wakely  <jwakely@redhat.com>
7673
7674         * include/std/sstream  (basic_stringbuf::view): Define for old
7675         std::string ABI.
7676         (basic_istringstream::view, basic_0stringstream::view)
7677         (basic_stringstream::view): Likewise.
7678         * testsuite/27_io/basic_istringstream/view/char/1.cc: Remove
7679         { dg-require-effective-target cxx11_abi }.
7680         * testsuite/27_io/basic_istringstream/view/wchar_t/1.cc:
7681         Likewise.
7682         * testsuite/27_io/basic_ostringstream/view/char/1.cc: Likewise.
7683         * testsuite/27_io/basic_ostringstream/view/wchar_t/1.cc:
7684         Likewise.
7685         * testsuite/27_io/basic_stringbuf/view/char/1.cc: Likewise.
7686         * testsuite/27_io/basic_stringbuf/view/wchar_t/1.cc: Likewise.
7687         * testsuite/27_io/basic_stringstream/view/char/1.cc: Likewise.
7688         * testsuite/27_io/basic_stringstream/view/wchar_t/1.cc:
7689         Likewise.
7690
7691 2023-02-02  Jonathan Wakely  <jwakely@redhat.com>
7692
7693         PR libstdc++/108636
7694         * config/abi/pre/gnu.ver (GLIBCXX_3.4.31): Export shared_ptr
7695         conversion operators for directory iterator comparisons with
7696         std::default_sentinel_t.
7697         * include/bits/fs_path.h (path::path(string_view, _Type))
7698         (path::_Cmpt::_Cmpt(string_view, _Type, size_t)): Move inline
7699         definitions to ...
7700         * src/c++17/fs_path.cc: ... here.
7701         * testsuite/27_io/filesystem/path/108636.cc: New test.
7702
7703 2023-02-02  Jonathan Wakely  <jwakely@redhat.com>
7704
7705         * include/std/variant (variant::operator=): Implement resolution
7706         of LWG 3585.
7707         * testsuite/20_util/variant/lwg3585.cc: New test.
7708
7709 2023-02-02  Gerald Pfeifer  <gerald@pfeifer.com>
7710
7711         * doc/xml/manual/using_exceptions.xml: Update a www.open-std.org
7712         link to https.
7713         * doc/html/manual/using_exceptions.html: Regenerate.
7714
7715 2023-02-02  Gerald Pfeifer  <gerald@pfeifer.com>
7716
7717         * doc/xml/manual/debug.xml: Fix link to online GDB manual.
7718         * doc/html/manual/debug.html: Regenerate.
7719
7720 2023-02-01  Jonathan Wakely  <jwakely@redhat.com>
7721
7722         * src/c++11/random.cc (random_device::_M_fini): Do not try to
7723         close the file handle if the target doesn't support the
7724         /dev/random and /dev/urandom files.
7725
7726 2023-02-01  Jonathan Wakely  <jwakely@redhat.com>
7727
7728         * config/os/generic/error_constants.h (errc::value_too_large)
7729         [__AVR__]: Define.
7730         * src/c++11/system_error.cc
7731         (system_category::default_error_condition) [__AVR__]: Only match
7732         recognize values equal to EDOM, ERANGE, ENOSYS and EINTR.
7733         * src/c++17/fs_ops.cc (fs::current_path) [__AVR__]: Do not check
7734         for ENOENT etc. in switch.
7735         (fs::remove_all) [__AVR__]: Likewise.
7736         * src/filesystem/ops-common.h [__AVR__]: Do not use POSIX open,
7737         close etc.
7738
7739 2023-02-01  Jonathan Wakely  <jwakely@redhat.com>
7740
7741         * acinclude.m4 (GLIBCXX_ZONEINFO_DIR) [avr-*-*, msp430-*-*]: Set
7742         embed_zoneinfo=no
7743         * configure: Regenerate.
7744
7745 2023-02-01  Hans-Peter Nilsson  <hp@axis.com>
7746
7747         PR testsuite/108632
7748         * testsuite/std/time/hh_mm_ss/1.cc (size): Add empty
7749         struct at end of S0.
7750
7751 2023-01-30  Gerald Pfeifer  <gerald@pfeifer.com>
7752
7753         * doc/xml/manual/shared_ptr.xml: Move links from both
7754         http://open-std.org and http://www.open-std.org to
7755         https://www.open-std.org.
7756         * doc/html/manual/memory.html: Regenerate.
7757
7758 2023-01-28  Gerald Pfeifer  <gerald@pfeifer.com>
7759
7760         * doc/xml/manual/appendix_contributing.xml: Adjust link to
7761         ISO C++ standard at ANSI.
7762         Move link to www.open-std.org to https.
7763         * doc/html/manual/appendix_contributing.html: Regenerate.
7764
7765 2023-01-28  Gerald Pfeifer  <gerald@pfeifer.com>
7766
7767         * doc/xml/manual/documentation_hacking.xml: Move sourceforge.net
7768         links to https.
7769         * doc/html/manual/documentation_hacking.html: Regenerate.
7770
7771 2023-01-28  Gerald Pfeifer  <gerald@pfeifer.com>
7772
7773         * doc/xml/manual/abi.xml: Update www.open-std.org link to https.
7774         * doc/html/manual/abi.html: Regenerate.
7775
7776 2023-01-27  Jakub Jelinek  <jakub@redhat.com>
7777
7778         PR libstdc++/108568
7779         * testsuite/17_intro/names.cc (__unused): For linux or GNU hurd
7780         include features.h if present and then check __GLIBC__ and
7781         __GLIBC_MINOR__ macros for glibc prior to 2.19, instead of testing
7782         __GLIBC_PREREQ which isn't defined yet.
7783
7784 2023-01-27  Jonathan Wakely  <jwakely@redhat.com>
7785
7786         * src/c++20/tzdb.cc (tzdata_stream): Use constant instead of
7787         string literal.
7788
7789 2023-01-27  Jonathan Wakely  <jwakely@redhat.com>
7790
7791         PR libstdc++/108554
7792         * testsuite/23_containers/map/modifiers/108554.cc: Use dg-bogus.
7793
7794 2023-01-26  Jonathan Wakely  <jwakely@redhat.com>
7795
7796         * src/c++20/tzdb.cc (operator>>(istream&, ZoneInfo&)): Allow
7797         rules named "+" for compatibility with older tzdata.zi files.
7798
7799 2023-01-26  Jonathan Wakely  <jwakely@redhat.com>
7800
7801         PR libstdc++/108554
7802         * include/bits/stl_tree.h (_Rb_tree_insert_and_rebalance): Add
7803         nonnull attribute.
7804         (_Rb_tree_rebalance_for_erase): Add nonnull and returns_nonnull
7805         attributes.
7806         * testsuite/23_containers/map/modifiers/108554.cc: New test.
7807
7808 2023-01-26  Jonathan Wakely  <jwakely@redhat.com>
7809
7810         PR libstdc++/108530
7811         * src/c++20/tzdb.cc (current_zone): Look for TIMEZONE or ZONE in
7812         /etc/sysconfig/clock, not DEFAULT_TIMEZONE.
7813
7814 2023-01-26  Gerald Pfeifer  <gerald@pfeifer.com>
7815
7816         * doc/xml/manual/intro.xml: Update links to www.open-std.org to
7817         use https.
7818         * doc/html/manual/bugs.html: Regenerate.
7819
7820 2023-01-24  Jonathan Wakely  <jwakely@redhat.com>
7821
7822         PR libstdc++/108530
7823         * src/c++20/tzdb.cc (current_zone): Look for DEFAULT_TIMEZONE in
7824         /etc/sysconfig/clock.
7825
7826 2023-01-24  Jonathan Wakely  <jwakely@redhat.com>
7827
7828         PR libstdc++/102301
7829         * include/bits/ranges_base.h: Include <bits/stl_iterator.h> for
7830         std::make_reverse_iterator.
7831         * include/std/tuple: Include <bits/ranges_util.h> for subrange.
7832         (make_from_tuple): Add static assertion from P2255 to diagnose
7833         dangling references.
7834         * testsuite/20_util/tuple/make_from_tuple/dangling_ref.cc: New test.
7835         * testsuite/20_util/tuple/make_from_tuple/tuple_like.cc: New test.
7836
7837 2023-01-23  François Dumont  <fdumont@gcc.gnu.org>
7838
7839         * include/debug/safe_iterator.h (_Safe_iterator<>::_Unchecked): New.
7840         (_Safe_iterator(const _Safe_iterator&, _Unchecked)): New.
7841         (_Safe_iterator::operator++(int)): Use latter.
7842         (_Safe_iterator::operator--(int)): Likewise.
7843         (_Safe_iterator(_Iterator, const _Safe_sequence_base*)): Remove !_M_insular()
7844         check.
7845         * include/debug/safe_local_iterator.h (_Safe_local_iterator<>::_Unchecked):
7846         New.
7847         (_Safe_local_iterator(const _Safe_local_iterator&, _Unchecked)): New.
7848         (_Safe_local_iterator::operator++(int)): Use latter.
7849         * src/c++11/debug.cc (_S_debug_messages): Add as comment the _Debug_msg_id
7850         entry associated to the array entry.
7851
7852 2023-01-18  Jonathan Wakely  <jwakely@redhat.com>
7853
7854         * include/bits/fs_path.h (u8path): Add deprecated attribute.
7855         * testsuite/27_io/filesystem/path/construct/90281.cc: Add
7856         -Wno-deprecated-declarations for C++20 and later.
7857         * testsuite/27_io/filesystem/path/factory/u8path-char8_t.cc:
7858         Likewise.
7859         * testsuite/27_io/filesystem/path/factory/u8path.cc: Likewise.
7860         * testsuite/27_io/filesystem/path/native/string.cc: Likewise.
7861         * testsuite/27_io/filesystem/path/factory/u8path-depr.cc: New test.
7862
7863 2023-01-18  Jonathan Wakely  <jwakely@redhat.com>
7864
7865         * include/bits/random.h (random_device) [!_GLIBCXX_USE_DEV_RANDOM]:
7866         Always call _M_fini and _M_getentropy.
7867
7868 2023-01-18  Gerald Pfeifer  <gerald@pfeifer.com>
7869
7870         * doc/xml/manual/policy_data_structures_biblio.xml: Adjust links
7871         to www.open-std.org to use https.
7872         (COM: Component Model Object Technologies): Rename from...
7873         (The Component Object Model): ...to.
7874         * doc/html/manual/policy_data_structures.html: Regenerate.
7875
7876 2023-01-18  Dimitrij Mijoski  <dmjpp@hotmail.com>
7877
7878         * testsuite/22_locale/codecvt/codecvt_unicode.cc: Simplify.
7879         * testsuite/22_locale/codecvt/codecvt_unicode.h: Simplify.
7880         * testsuite/22_locale/codecvt/codecvt_unicode_wchar_t.cc: Simplify.
7881
7882 2023-01-17  Jonathan Wakely  <jwakely@redhat.com>
7883
7884         * acinclude.m4 (GLIBCXX_ZONEINFO_DIR): Check $target_os instead
7885         of $host. Fix check for file being present during native build.
7886         * configure: Regenerate.
7887
7888 2023-01-17  Martin Liska  <mliska@suse.cz>
7889
7890         * src/libbacktrace/Makefile.in: Regenerate.
7891
7892 2023-01-16  Jonathan Wakely  <jwakely@redhat.com>
7893
7894         * src/c++20/tzdb.cc (_GLIBCXX_USE_CXX11_ABI): Define to 1.
7895
7896 2023-01-16  Jonathan Wakely  <jwakely@redhat.com>
7897
7898         PR libstdc++/108413
7899         * include/c_compatibility/stdatomic.h: Change copyright line to
7900         be consistent with other headers contributed under DCO terms.
7901         * include/std/expected: Add full stop to copyright line.
7902         * src/c++20/tzdb.cc: Likewise.
7903
7904 2023-01-15  Gerald Pfeifer  <gerald@pfeifer.com>
7905
7906         * doc/xml/manual/status_cxx2014.xml: Switch www.open-std.org to
7907         https.
7908         * doc/xml/manual/status_cxx2017.xml: Ditto.
7909         * doc/xml/manual/status_cxx2020.xml: Ditto.
7910         * doc/xml/manual/status_cxx2023.xml: Ditto.
7911         * doc/html/manual/status.html: Regenerate.
7912
7913 2023-01-15  Jonathan Wakely  <jwakely@redhat.com>
7914
7915         * testsuite/std/time/tzdb_list/1.cc: Remove dg-xfail-run-if
7916         and fail gracefully if defining the weak symbol doesn't work.
7917
7918 2023-01-15  François Dumont  <fdumont@gcc.gnu.org>
7919
7920         PR libstdc++/108288
7921         * include/debug/safe_iterator.h (_Safe_iterator<>::operator++(int)): Extend deadlock
7922         fix to other iterator category.
7923         (_Safe_iterator<>::operator--(int)): Likewise.
7924         * include/debug/safe_local_iterator.h (_Safe_local_iterator<>::operator++(int)):
7925         Fix deadlock.
7926         * testsuite/util/debug/unordered_checks.h (invalid_local_iterator_pre_increment): New.
7927         (invalid_local_iterator_post_increment): New.
7928         * testsuite/23_containers/unordered_map/debug/invalid_local_iterator_post_increment_neg.cc:
7929         New test.
7930         * testsuite/23_containers/unordered_map/debug/invalid_local_iterator_pre_increment_neg.cc:
7931         New test.
7932
7933 2023-01-15  Jonathan Wakely  <jwakely@redhat.com>
7934
7935         * testsuite/30_threads/jthread/jthread.cc: Remove -pthread from
7936         dg-options.
7937
7938 2023-01-15  Jonathan Wakely  <jwakely@redhat.com>
7939
7940         * testsuite/std/time/clock/utc/io.cc: Use ctype to widen char.
7941
7942 2023-01-14  Björn Schäpers  <bjoern@hazardy.de>
7943
7944         * acinclude.m4 (GLIBCXX_ENABLE_BACKTRACE): Add check for
7945         windows.h. Add pecoff as FORMAT_FILE.
7946         * config.h.in: Regenerate.
7947         * configure: Regenerate.
7948         * src/libbacktrace/Makefile.am: Regenerate.
7949         * src/libbacktrace/Makefile.in: Add pecoff.c as FORMAT_FILE.
7950
7951 2023-01-14  Björn Schäpers  <bjoern@hazardy.de>
7952
7953         * include/std/stacktrace (stacktrace_entry::_S_demangle): Use
7954         raw __name if __cxa_demangle could not demangle it.
7955
7956 2023-01-14  Jonathan Wakely  <jwakely@redhat.com>
7957
7958         PR libstdc++/108409
7959         * src/c++20/tzdb.cc (current_zone()) [_AIX]: Use TZ environment
7960         variable.
7961
7962 2023-01-14  Jonathan Wakely  <jwakely@redhat.com>
7963
7964         * src/c++20/tzdb.cc (TZDB_DISABLED): Disable all code for
7965         loading tzdb.
7966         * testsuite/std/time/tzdb/leap_seconds.cc: Require tzdb
7967         effective target.
7968         * testsuite/std/time/tzdb_list/1.cc: Likewise.
7969
7970 2023-01-14  Jonathan Wakely  <jwakely@redhat.com>
7971
7972         * acinclude.m4 (GLIBCXX_ZONEINFO_DIR): Replace the
7973         --with-libstdcxx-zoneinfo-dir configure option with
7974         --with-libstdcxx-zoneinfo with yes/no/static choices as well as
7975         a directory.
7976         * config.h.in: Regenerate.
7977         * configure: Regenerate.
7978         * doc/xml/manual/configure.xml: Document configure option.
7979         * doc/html/manual/configure.html: Regenerate.
7980         * src/c++20/Makefile.am: Generate tzdata.zi.h header.
7981         * src/c++20/Makefile.in: Regenerate.
7982         * src/c++20/tzdb.cc (__gnu_cxx::zoneinfo_dir_override): Return a
7983         null pointer if no directory is configured.
7984         (zoneinfo_dir): Replace with ...
7985         (zoneinfo_file): New function.
7986         (tzdata_stream): New istream class.
7987         (remote_version, reload_tzdb): Use tzdata_stream.
7988         * testsuite/lib/libstdc++.exp (check_effective_target_tzdb):
7989         Check new _GLIBCXX_STATIC_TZDATA macro and ignore presence of
7990         tzdata.zi file in default location.
7991         * src/c++20/tzdata.zi: New file.
7992
7993 2023-01-14  Jonathan Wakely  <jwakely@redhat.com>
7994
7995         * include/bits/chrono_io.h (operator<<): Fix syntax errors.
7996         * testsuite/std/time/month_day/io.cc: New test.
7997         * testsuite/std/time/month_day_last/io.cc: New test.
7998         * testsuite/std/time/month_weekday/io.cc: New test.
7999         * testsuite/std/time/month_weekday_last/io.cc: New test.
8000         * testsuite/std/time/weekday_indexed/io.cc: New test.
8001         * testsuite/std/time/weekday_last/io.cc: New test.
8002         * testsuite/std/time/year_month/io.cc: New test.
8003         * testsuite/std/time/year_month_day_last/io.cc: New test.
8004         * testsuite/std/time/year_month_weekday/io.cc: New test.
8005         * testsuite/std/time/year_month_weekday_last/io.cc: New test.
8006
8007 2023-01-14  François Dumont  <fdumont@gcc.gnu.org>
8008
8009         * include/std/format [_GLIBCXX_INLINE_VERSION](to_chars): Adapt __asm symbol
8010         specifications.
8011         * config/abi/pre/gnu-versioned-namespace.ver: Add to_chars/from_chars symbols
8012         export.
8013
8014 2023-01-13  Jonathan Wakely  <jwakely@redhat.com>
8015
8016         * include/bits/std_mutex.h: Include <errno.h>.
8017
8018 2023-01-13  Arsen Arsenović  <arsen@aarsen.me>
8019
8020         * testsuite/20_util/to_chars/version.cc: Mark hosted-only.
8021         * testsuite/20_util/uses_allocator/lwg3677.cc: Ditto.
8022         * testsuite/20_util/weak_ptr/cons/self_move.cc: Ditto.
8023         * testsuite/std/ranges/adaptors/as_rvalue/1.cc: Replace usage of
8024         std::make_unique with a freestanding-compatible wrapper around
8025         unique_ptr.
8026         * testsuite/21_strings/basic_string_view/operations/contains/char.cc:
8027         Don't test for presence of __cpp_lib_string_contains on !HOSTED.
8028         * testsuite/21_strings/basic_string_view/operations/contains/char/2.cc:
8029         Ditto.
8030         * testsuite/std/ranges/version_c++23.cc: Don't test for presence
8031         of __cpp_lib_ranges in !HOSTED.
8032
8033 2023-01-13  Arsen Arsenović  <arsen@aarsen.me>
8034
8035         * include/Makefile.am: Install bits/char_traits.h,
8036         std/string_view
8037         * include/Makefile.in: Regenerate.
8038         * include/bits/char_traits.h: Gate hosted-only, wchar-only and
8039         mbstate-only bits behind appropriate #ifs.
8040         * include/std/string_view: Gate <iostream> functionality behind
8041         HOSTED.
8042         * include/std/version: Enable __cpp_lib_constexpr_string_view
8043         and __cpp_lib_starts_ends_with in !HOSTED.
8044         * include/std/ranges: Re-enable __is_basic_string_view on
8045         freestanding, include <string_view> directly.
8046         * include/precompiled/stdc++.h: Include <string_view> when
8047         !HOSTED too.
8048         * testsuite/20_util/function_objects/searchers.cc: Skip testing
8049         boyer_moore searchers on freestanding
8050         * testsuite/21_strings/basic_string_view/capacity/1.cc: Guard
8051         <string>-related tests behind __STDC_HOSTED__.
8052         * testsuite/21_strings/basic_string_view/cons/char/1.cc: Ditto.
8053         * testsuite/21_strings/basic_string_view/cons/char/2.cc: Remove
8054         unused <stdexcept> include.
8055         * testsuite/21_strings/basic_string_view/cons/char/3.cc: Remove
8056         unused <vector> include.
8057         * testsuite/21_strings/basic_string_view/cons/char/range.cc:
8058         Guard <string> related testing behind __STDC_HOSTED__.
8059         * testsuite/21_strings/basic_string_view/cons/wchar_t/1.cc:
8060         Guard <stdexcept> related tests behind __STDC_HOSTED__.
8061         * testsuite/21_strings/basic_string_view/element_access/char/1.cc:
8062         Ditto.
8063         * testsuite/21_strings/basic_string_view/element_access/wchar_t/1.cc:
8064         Guard <stdexcept> tests behind __STDC_HOSTED__.
8065         * testsuite/21_strings/basic_string_view/operations/contains/char/2.cc:
8066         Enable test on freestanding, guard <stdexcept> bits behind
8067         __STDC_HOSTED__.
8068         * testsuite/21_strings/basic_string_view/operations/substr/char.cc:
8069         Guard <stdexcept> bits behind __STDC_HOSTED__.
8070         * testsuite/21_strings/basic_string_view/operations/substr/wchar_t.cc:
8071         Ditto.
8072
8073 2023-01-13  Dimitrij Mijoski  <dmjpp@hotmail.com>
8074
8075         PR libstdc++/86419
8076         * src/c++11/codecvt.cc (read_utf8_code_point): Correctly detect
8077         errors in incomplete multibyte sequences.
8078         (utf16_in): Remove surrogates parameter. Fix conditions for
8079         returning partial.
8080         (utf16_out): Fix condition for returning partial.
8081         (ucs2_in): Do not pass surrogates argument to utf16_in.
8082         * testsuite/22_locale/codecvt/codecvt_unicode.cc: New test.
8083         * testsuite/22_locale/codecvt/codecvt_unicode.h: New header for
8084         tests.
8085         * testsuite/22_locale/codecvt/codecvt_unicode_wchar_t.cc: New
8086         test.
8087
8088 2023-01-13  Jonathan Wakely  <jwakely@redhat.com>
8089
8090         PR libstdc++/108331
8091         * config/io/c_io_stdio.h (__c_lock): Define as a typedef for
8092         __GTHREAD_LEGACY_MUTEX_T if defined.
8093
8094 2023-01-13  Jonathan Wakely  <jwakely@redhat.com>
8095
8096         PR libstdc++/108327
8097         * config/os/gnu-linux/ldbl-extra.ver (GLIBCXX_LDBL_3.4.31):
8098         Export __try_use_facet specializations for facets in namespace
8099         __gnu_cxx_ldbl128.
8100         * config/os/gnu-linux/ldbl-ieee128-extra.ver
8101         (GLIBCXX_IEEE128_3.4.31): Likewise for facets in namespace
8102         __gnu_cxx_ieee128.
8103         * testsuite/util/testsuite_abi.cc: Add to lists of known and
8104         latest versions.
8105
8106 2023-01-13  Jonathan Wakely  <jwakely@redhat.com>
8107
8108         * include/bits/std_mutex.h: Remove <system_error> include.
8109         * include/std/condition_variable: Add <bits/error_constants.h>
8110         include.
8111         * include/std/mutex: Likewise.
8112         * include/std/shared_mutex: Likewise.
8113
8114 2023-01-12  Jonathan Wakely  <jwakely@redhat.com>
8115
8116         PR libstdc++/77691
8117         * include/experimental/memory_resource
8118         (_GLIBCXX_MAX_ALIGN_MATCHES_MALLOC): Define.
8119         (do_allocate, do_deallocate): Check it.
8120         * testsuite/experimental/memory_resource/new_delete_resource.cc:
8121         Relax expected behaviour for 64-bit hppa-hp-hpux11.11.
8122
8123 2023-01-12  Jonathan Wakely  <jwakely@redhat.com>
8124
8125         * doc/xml/manual/abi.xml: Add latest library versions.
8126         * doc/html/manual/abi.html: Regenerate.
8127
8128 2023-01-12  François Dumont  <fdumont@gcc.gnu.org>
8129
8130         PR libstdc++/107189
8131         * include/bits/stl_tree.h (_Rb_tree<>::_M_insert_range_equal): Remove
8132         unused _Alloc_node instance.
8133
8134 2023-01-12  Jonathan Wakely  <jwakely@redhat.com>
8135
8136         * include/bits/atomic_wait.h (__detail::__platform_wait_t):
8137         Define as unsigned long if always lock-free, and unsigned int
8138         otherwise.
8139
8140 2023-01-10  Jonathan Wakely  <jwakely@redhat.com>
8141
8142         * src/c++20/tzdb.cc (tzdb_list::_S_init_tzdb): Use __try and
8143         __catch macros for exception handling.
8144
8145 2023-01-10  Jonathan Wakely  <jwakely@redhat.com>
8146
8147         PR libstdc++/108221
8148         * include/bits/stl_algobase.h (__lg): Replace six overloads with
8149         a single function template for all integer types.
8150         * include/bits/stl_algo.h (__merge_adaptive_resize): Cast
8151         arithmetic results back to _Distance.
8152
8153 2023-01-10  Jonathan Wakely  <jwakely@redhat.com>
8154
8155         PR libstdc++/108221
8156         * include/std/span (span::span()): Un-simplify constraint to
8157         work for size_t of lesser rank than int.
8158
8159 2023-01-07  LIU Hao  <lh_mouse@126.com>
8160
8161         PR middle-end/108300
8162         * src/c++11/system_error.cc: Define `WIN32_LEAN_AND_MEAN` before
8163         <windows.h>.
8164         * src/c++11/thread.cc: Likewise.
8165         * src/c++17/fs_ops.cc: Likewise.
8166         * src/filesystem/ops.cc: Likewise.
8167
8168 2023-01-06  Jonathan Wakely  <jwakely@redhat.com>
8169
8170         PR libstdc++/108228
8171         * src/c++20/tzdb.cc (zoneinfo_dir): Add diagnostic pragma.
8172
8173 2023-01-06  Jonathan Wakely  <jwakely@redhat.com>
8174
8175         PR libstdc++/108235
8176         * src/c++20/tzdb.cc (time_zone::_Impl::RulesCounter): New class
8177         template and partial specialization for synchronizing access to
8178         time_zone::_Impl::infos.
8179         (time_zone::_M_get_sys_info, reload_tzdb): Adjust uses of
8180         rules_counter.
8181
8182 2023-01-06  Patrick Palka  <ppalka@redhat.com>
8183
8184         PR libstdc++/108260
8185         * include/bits/utility.h (__cpp_lib_ranges_zip): Define for C++23.
8186         * include/std/ranges (__cpp_lib_ranges_zip): Likewise.
8187         (__cpp_lib_ranges_chunk): Likewise.
8188         (__cpp_lib_ranges_slide): Likewise.
8189         (__cpp_lib_ranges_chunk_by): Likewise.
8190         (__cpp_lib_ranges_join_with): Likewise.
8191         (__cpp_lib_ranges_repeat): Likewise.
8192         (__cpp_lib_ranges_stride): Likewise.
8193         (__cpp_lib_ranges_cartesian_product): Likewise.
8194         (__cpp_lib_ranges_as_rvalue): Likewise.
8195         * include/std/version: Ditto.
8196         * testsuite/20_util/tuple/p2321r2.cc: Verify value of
8197         feature-test macro.
8198         * testsuite/std/ranges/adaptors/as_rvalue/1.cc: Likewise.
8199         * testsuite/std/ranges/adaptors/chunk/1.cc: Likewise.
8200         * testsuite/std/ranges/adaptors/chunk_by/1.cc: Likewise.
8201         * testsuite/std/ranges/adaptors/join_with/1.cc: Likewise.
8202         * testsuite/std/ranges/adaptors/slide/1.cc: Likewise.
8203         * testsuite/std/ranges/adaptors/stride/1.cc: Likewise.
8204         * testsuite/std/ranges/cartesian_product/1.cc: Likewise.
8205         * testsuite/std/ranges/repeat/1.cc: Likewise.
8206         * testsuite/std/ranges/zip/1.cc: Likewise.
8207         * testsuite/std/ranges/version_c++23.cc: New test.
8208
8209 2023-01-06  Jonathan Wakely  <jwakely@redhat.com>
8210
8211         PR libstdc++/108214
8212         * include/std/bitset (operator>>): Use alloca in the right
8213         scope, not in a constructor.
8214         * testsuite/20_util/bitset/io/input.cc: Check case from PR.
8215
8216 2023-01-06  Jonathan Wakely  <jwakely@redhat.com>
8217
8218         PR libstdc++/108221
8219         * include/std/format (basic_format_arg) [!__cpp_lib_to_chars]:
8220         Disable visiting floating-point types.
8221
8222 2023-01-06  Jonathan Wakely  <jwakely@redhat.com>
8223
8224         PR libstdc++/108288
8225         * include/debug/safe_iterator.h (_Safe_iterator::operator++(int))
8226         (_Safe_iterator::operator--(int)): Do not hold lock around
8227         construction of return value.
8228
8229 2023-01-05  John David Anglin  <danglin@gcc.gnu.org>
8230
8231         * config/cpu/hppa/atomicity.h (_PA_LDCW_INSN): Define.
8232         (__exchange_and_add): Use _PA_LDCW_INSN.  Use ordered store for
8233         lock release.  Revise loop.
8234         (__atomic_add): Likewise.
8235
8236 2023-01-05  Jonathan Wakely  <jwakely@redhat.com>
8237
8238         PR libstdc++/108212
8239         * python/libstdcxx/v6/printers.py (_utc_timezone): New global
8240         variable.
8241         (StdChronoTimePointPrinter::to_string): Use it.
8242
8243 2023-01-05  Jonathan Wakely  <jwakely@redhat.com>
8244
8245         PR libstdc++/108290
8246         * include/std/functional (_Bind_front): Add no_unique_address
8247         attribute to data members.
8248         * testsuite/20_util/function_objects/bind_front/107784.cc: Check
8249         size of call wrappers with empty types for targets and bound
8250         arguments.
8251
8252 2023-01-05  Jonathan Wakely  <jwakely@redhat.com>
8253
8254         PR libstdc++/108211
8255         * src/c++20/tzdb.cc (chrono::current_zone()): Check for zone
8256         using only last component of the name.
8257
8258 2023-01-05  Jonathan Wakely  <jwakely@redhat.com>
8259
8260         PR libstdc++/108228
8261         PR libstdc++/108235
8262         * config/abi/pre/gnu.ver: Move zoneinfo_dir_override export to
8263         the latest symbol version.
8264         * src/c++20/tzdb.cc (USE_ATOMIC_SHARED_PTR): Define to 0 if
8265         atomic<_Node*> is not always lock free.
8266         (USE_ATOMIC_LIST_HEAD): New macro.
8267         [__hpux__] (__gnu_cxx::zoneinfo_dir_override()): Provide
8268         definition of weak symbol.
8269         (tzdb_list::_Node::_S_head): Rename to _S_head_cache.
8270         (tzdb_list::_Node::_S_list_head): New function for accessing
8271         list head efficiently.
8272         (tzdb_list::_Node::_S_cache_list_head): New function for
8273         updating _S_list_head.
8274
8275 2023-01-05  Jonathan Wakely  <jwakely@redhat.com>
8276
8277         PR libstdc++/108265
8278         * include/std/chrono (hh_mm_ss): Do not use chrono::abs if
8279         duration rep is unsigned.
8280         * testsuite/std/time/hh_mm_ss/1.cc: Check unsigned rep.
8281
8282 2023-01-04  Iain Sandoe  <iain@sandoe.co.uk>
8283
8284         PR libstdc++/108228
8285         * config/abi/pre/gnu.ver (GLIBCXX_3.4):
8286         Add __gnu_cxx::zoneinfo_dir_override().
8287
8288 2023-01-04  Jonathan Wakely  <jwakely@redhat.com>
8289
8290         PR libstdc++/108258
8291         * include/std/array (__array_traits<T, 0>::operator T*()): Add
8292         constexpr.
8293         * testsuite/23_containers/array/element_access/constexpr_c++17.cc: Check
8294         std::array<T, 0>::data().
8295
8296 \f
8297 Copyright (C) 2023 Free Software Foundation, Inc.
8298
8299 Copying and distribution of this file, with or without modification,
8300 are permitted in any medium without royalty provided the copyright
8301 notice and this notice are preserved.