libstdc++-v3/ChangeLog

   1 2022-08-23  Jonathan Wakely  <jwakely@redhat.com>
   2
   3         Backported from master:
   4         2022-08-22  Jonathan Wakely  <jwakely@redhat.com>
   5
   6         PR libstdc++/105678
   7         * doc/xml/manual/using.xml: Document -lstdc++_libbacktrace
   8         requirement for using std::stacktrace. Also adjust -frtti and
   9         -fexceptions to document non-default (i.e. negative) forms.
  10         * doc/html/*: Regenerate.
  11
  12 2022-08-19  Release Manager
  13
  14         * GCC 12.2.0 released.
  15
  16 2022-08-05  Jonathan Wakely  <jwakely@redhat.com>
  17
  18         Backported from master:
  19         2022-08-04  Jonathan Wakely  <jwakely@redhat.com>
  20
  21         * include/std/string_view (basic_string_view(Range&&)): Add
  22         explicit as per P2499R0.
  23         * testsuite/21_strings/basic_string_view/cons/char/range_c++20.cc:
  24         Adjust implicit conversions. Check implicit conversions fail.
  25         * testsuite/21_strings/basic_string_view/cons/wchar_t/range_c++20.cc:
  26         Likewise.
  27
  28 2022-08-05  Jonathan Wakely  <jwakely@redhat.com>
  29
  30         Backported from master:
  31         2022-08-04  Jonathan Wakely  <jwakely@redhat.com>
  32
  33         * include/std/expected (unexpected::_M_val): Rename to _M_unex.
  34         (bad_expected_access::_M_val): Likewise.
  35
  36 2022-08-05  Jonathan Wakely  <jwakely@redhat.com>
  37
  38         Backported from master:
  39         2022-08-04  Jonathan Wakely  <jwakely@redhat.com>
  40
  41         * include/bits/ios_base.h (__cpp_lib_ios_noreplace): Update
  42         value to 202207L.
  43         * include/std/version (__cpp_lib_ios_noreplace): Likewise.
  44         * testsuite/27_io/basic_ofstream/open/char/noreplace.cc: Check
  45         for new value.
  46         * testsuite/27_io/basic_ofstream/open/wchar_t/noreplace.cc:
  47         Likewise.
  48
  49 2022-08-03  Jonathan Wakely  <jwakely@redhat.com>
  50
  51         Backported from master:
  52         2022-06-28  Jonathan Wakely  <jwakely@redhat.com>
  53
  54         * src/c++17/fs_dir.cc (_Dir::dir_and_pathname):: Replace with
  55         current() returning _At_path.
  56         (_Dir::_Dir, _Dir::open_subdir, _Dir::do_unlink): Adjust.
  57         * src/filesystem/dir-common.h (_Dir_base::_At_path): New class.
  58         (_Dir_base::_Dir_Base, _Dir_base::openat): Use _At_path.
  59         * src/filesystem/dir.cc (_Dir::dir_and_pathname): Replace with
  60         current() returning _At_path.
  61         (_Dir::_Dir, _Dir::open_subdir): Adjust.
  62
  63 2022-08-03  Jonathan Wakely  <jwakely@redhat.com>
  64
  65         Backported from master:
  66         2022-07-29  Jonathan Wakely  <jwakely@redhat.com>
  67
  68         PR libstdc++/104443
  69         * include/bits/stl_iterator.h (common_iterator::operator->):
  70         Change return type to just auto.
  71
  72 2022-08-03  Jonathan Wakely  <jwakely@redhat.com>
  73
  74         Backported from master:
  75         2022-07-12  Jonathan Wakely  <jwakely@redhat.com>
  76
  77         PR libstdc++/106248
  78         * include/std/istream [C++17] (operator>>(istream&, char*)):
  79         Set eofbit if we stopped extracting at EOF.
  80         * testsuite/27_io/basic_istream/extractors_character/char/pr106248.cc:
  81         New test.
  82         * testsuite/27_io/basic_istream/extractors_character/wchar_t/pr106248.cc:
  83         New test.
  84
  85 2022-08-03  Jonathan Wakely  <jwakely@redhat.com>
  86
  87         Backported from master:
  88         2022-07-01  Jonathan Wakely  <jwakely@redhat.com>
  89
  90         * include/bits/fs_ops.h: Add nodiscard to all pure functions.
  91         * include/experimental/bits/fs_ops.h: Likewise.
  92         * testsuite/27_io/filesystem/operations/all.cc: Do not discard
  93         results of absolute and canonical.
  94         * testsuite/27_io/filesystem/operations/absolute.cc: Cast
  95         discarded result to void.
  96         * testsuite/27_io/filesystem/operations/canonical.cc: Likewise.
  97         * testsuite/27_io/filesystem/operations/exists.cc: Likewise.
  98         * testsuite/27_io/filesystem/operations/is_empty.cc: Likewise.
  99         * testsuite/27_io/filesystem/operations/read_symlink.cc:
 100         Likewise.
 101         * testsuite/27_io/filesystem/operations/status.cc: Likewise.
 102         * testsuite/27_io/filesystem/operations/symlink_status.cc:
 103         Likewise.
 104         * testsuite/27_io/filesystem/operations/temp_directory_path.cc:
 105         Likewise.
 106         * testsuite/experimental/filesystem/operations/canonical.cc:
 107         Likewise.
 108         * testsuite/experimental/filesystem/operations/exists.cc:
 109         Likewise.
 110         * testsuite/experimental/filesystem/operations/is_empty.cc:
 111         Likewise.
 112         * testsuite/experimental/filesystem/operations/read_symlink.cc:
 113         Likewise.
 114         * testsuite/experimental/filesystem/operations/temp_directory_path.cc:
 115         Likewise.
 116
 117 2022-08-03  Jonathan Wakely  <jwakely@redhat.com>
 118
 119         Backported from master:
 120         2022-06-16  Jonathan Wakely  <jwakely@redhat.com>
 121
 122         PR libstdc++/105995
 123         * include/bits/basic_string.h (_M_use_local_data): Initialize
 124         the entire SSO buffer.
 125         * testsuite/21_strings/basic_string/cons/char/105995.cc: New test.
 126
 127 2022-08-03  Jonathan Wakely  <jwakely@redhat.com>
 128
 129         Backported from master:
 130         2022-06-14  Jonathan Wakely  <jwakely@redhat.com>
 131
 132         * include/bits/new_allocator.h: Fix indentation.
 133         * include/ext/malloc_allocator.h: Likewise.
 134
 135 2022-08-03  Jonathan Wakely  <jwakely@redhat.com>
 136
 137         Backported from master:
 138         2022-06-14  Jonathan Wakely  <jwakely@redhat.com>
 139
 140         PR libstdc++/105957
 141         * include/bits/allocator.h (allocator::allocate): Check for
 142         overflow in constexpr allocation.
 143         * testsuite/20_util/allocator/105975.cc: New test.
 144
 145 2022-08-03  Jonathan Wakely  <jwakely@redhat.com>
 146
 147         Backported from master:
 148         2022-06-10  Jonathan Wakely  <jwakely@redhat.com>
 149
 150         PR libstdc++/105844
 151         * include/experimental/numeric (experimental::gcd): Simplify
 152         assertions. Use __abs_r instead of __absu.
 153         (experimental::lcm): Likewise. Remove use of __detail::__lcm so
 154         overflow can be detected.
 155         * include/std/numeric (__detail::__absu): Rename to __abs_r and
 156         change to allow signed result type, so overflow can be detected.
 157         (__detail::__lcm): Remove.
 158         (gcd): Simplify assertions. Use __abs_r instead of __absu.
 159         (lcm): Likewise. Remove use of __detail::__lcm so overflow can
 160         be detected.
 161         * testsuite/26_numerics/gcd/gcd_neg.cc: Adjust dg-error lines.
 162         * testsuite/26_numerics/lcm/lcm_neg.cc: Likewise.
 163         * testsuite/26_numerics/gcd/105844.cc: New test.
 164         * testsuite/26_numerics/lcm/105844.cc: New test.
 165
 166 2022-07-26  Thomas Rodgers  <trodgers@redhat.com>
 167
 168         Backported from master:
 169         2022-07-26  Thomas Rodgers  <trodgers@redhat.com>
 170
 171         * include/bits/atomic_wait.h (__atomic_spin): Merge spin loops.
 172
 173 2022-07-22  Jonathan Wakely  <jwakely@redhat.com>
 174
 175         Backported from master:
 176         2022-06-28  Jonathan Wakely  <jwakely@redhat.com>
 177
 178         * src/c++17/fs_dir.cc (_Dir::_Dir) [!_GLIBCXX_HAVE_OPENAT]:
 179         Always store pathname if we don't have openat or unlinkat,
 180         because the full path is needed to open sub-directories and
 181         remove entries.
 182
 183 2022-07-22  Alexandre Oliva  <oliva@adacore.com>
 184
 185         Backported from master:
 186         2022-06-27  Alexandre Oliva  <oliva@adacore.com>
 187
 188         * src/c++17/fs_dir.cc (dir_and_pathname): Use dirfd if
 189         _GLIBCXX_HAVE_OPENAT.
 190
 191 2022-07-22  Alexandre Oliva  <oliva@adacore.com>
 192
 193         Backported from master:
 194         2022-06-24  Alexandre Oliva  <oliva@adacore.com>
 195
 196         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for
 197         openat.
 198         * configure, config.h.in: Rebuilt.
 199         * src/filesystem/dir-common.h (openat): Use ::openat if
 200         _GLIBCXX_HAVE_OPENAT.
 201         * src/filesystem/dir.cc (dir_and_pathname): Use dirfd if
 202         _GLIBCXX_HAVE_OPENAT.
 203
 204 2022-07-22  Jonathan Wakely  <jwakely@redhat.com>
 205
 206         Backported from master:
 207         2022-05-06  Jonathan Wakely  <jwakely@redhat.com>
 208
 209         * include/std/stacktrace: Do not include <cxxabi.h>.
 210         (__cxa_demangle): Declare.
 211
 212 2022-07-21  Jonathan Wakely  <jwakely@redhat.com>
 213
 214         Backported from master:
 215         2022-07-20  Jonathan Wakely  <jwakely@redhat.com>
 216
 217         PR libstdc++/100823
 218         * include/bits/stl_iterator.h (common_iterator): Define move
 219         constructor and move assignment operator.
 220         (common_iterator::_M_assign): New function implementing
 221         assignment.
 222         (common_iterator::operator=): Use _M_assign.
 223         (common_iterator::_S_valueless): New constant.
 224         * testsuite/24_iterators/common_iterator/100823.cc: New test.
 225
 226 2022-07-21  Jonathan Wakely  <jwakely@redhat.com>
 227
 228         Backported from master:
 229         2022-07-20  Jonathan Wakely  <jwakely@redhat.com>
 230
 231         * include/bits/stl_iterator.h (common_iterator): Fix incorrect
 232         uses of is_nothrow_assignable_v. Fix inconsistent constraints on
 233         friend declaration. Do not move argument in copy constructor.
 234         * testsuite/24_iterators/common_iterator/1.cc: Check for
 235         noexcept constructibnle/assignable.
 236
 237 2022-07-21  Nathan Sidwell  <nathan@acm.org>
 238
 239         Backported from master:
 240         2022-05-26  Nathan Sidwell  <nathan@acm.org>
 241
 242         * include/bits/hashtable.h: Include required headers.
 243         * include/bits/hashtable_policy.h: Likewise.
 244         * include/bits/stl_heap.h: Likewise.
 245         * include/bits/stl_iterator_base_funcs.h: Likewise.
 246
 247 2022-07-21  Jonathan Wakely  <jwakely@redhat.com>
 248
 249         Backported from master:
 250         2022-06-30  Jonathan Wakely  <jwakely@redhat.com>
 251
 252         * include/bits/utility.h: Fix comment typos.
 253
 254 2022-07-21  Jonathan Wakely  <jwakely@redhat.com>
 255
 256         Backported from master:
 257         2022-06-28  Jonathan Wakely  <jwakely@redhat.com>
 258
 259         * testsuite/20_util/from_chars/4.cc: Only use log2 if C99 math
 260         functions are available.
 261
 262 2022-07-21  Jonathan Wakely  <jwakely@redhat.com>
 263
 264         Backported from master:
 265         2022-06-23  Jonathan Wakely  <jwakely@redhat.com>
 266
 267         * testsuite/26_numerics/random/random_device/entropy.cc: Use
 268         numeric_limits<unsigned>::digits.
 269
 270 2022-07-21  Marco Falke  <falke.marco@gmail.com>
 271
 272         Backported from master:
 273         2022-07-19  Marco Falke  <falke.marco@gmail.com>
 274
 275         * include/std/charconv (__from_chars_alnum_to_val): Replace
 276         implicit conversion from int to unsigned char with explicit
 277         cast.
 278
 279 2022-07-21  Jonathan Wakely  <jwakely@redhat.com>
 280
 281         Backported from master:
 282         2022-06-30  Jonathan Wakely  <jwakely@redhat.com>
 283
 284         PR libstdc++/88881
 285         * src/filesystem/ops.cc (has_trailing_slash): New helper
 286         function.
 287         (fs::status): Strip trailing slashes.
 288         (fs::symlink_status): Likewise.
 289         * testsuite/experimental/filesystem/operations/temp_directory_path.cc:
 290         Clean the environment before each test and use TMP instead of
 291         TMPDIR so the test passes on Windows.
 292
 293 2022-07-21  Jonathan Wakely  <jwakely@redhat.com>
 294
 295         Backported from master:
 296         2022-06-10  Jonathan Wakely  <jwakely@redhat.com>
 297
 298         PR libstdc++/105880
 299         * libsupc++/eh_globals.cc (eh_globals): Ensure constant init and
 300         prevent destruction during termination.
 301         (__eh_globals_init::_M_init): Replace with static member _S_init.
 302         (__cxxabiv1::__cxa_get_globals_fast): Update.
 303         (__cxxabiv1::__cxa_get_globals): Likewise.
 304
 305 2022-07-07  Jonathan Wakely  <jwakely@redhat.com>
 306
 307         Backported from master:
 308         2022-07-01  Jonathan Wakely  <jwakely@redhat.com>
 309
 310         PR libstdc++/106162
 311         * include/Makefile.am (largefile-config.h): Add
 312         stamp-${host_alias} prerequisite.
 313         * include/Makefile.in: Regenerate.
 314
 315 2022-07-07  Jonathan Wakely  <jwakely@redhat.com>
 316
 317         Backported from master:
 318         2022-06-23  Jonathan Wakely  <jwakely@redhat.com>
 319
 320         * testsuite/27_io/filesystem/iterators/error_reporting.cc: Use
 321         rmdir to remove directories.
 322         * testsuite/experimental/filesystem/iterators/error_reporting.cc:
 323         Likewise.
 324
 325 2022-06-14  Jonathan Wakely  <jwakely@redhat.com>
 326
 327         Backported from master:
 328         2022-06-13  Jonathan Wakely  <jwakely@redhat.com>
 329
 330         * include/std/atomic (__atomic_val_t): Use __type_identity_t
 331         instead of atomic<T>::value_type, as per LWG 3220.
 332         * testsuite/29_atomics/atomic/lwg3220.cc: New test.
 333
 334 2022-06-14  Mark Mentovai  <mark@mentovai.com>
 335
 336         Backported from master:
 337         2022-06-13  Mark Mentovai  <mark@mentovai.com>
 338
 339         * include/experimental/bits/fs_path.h (__detail::__null_terminated):
 340         Rename to __nul_terminated to avoid colliding with a macro in
 341         Apple's SDK.
 342
 343 2022-06-08  Jonathan Wakely  <jwakely@redhat.com>
 344
 345         Backported from master:
 346         2022-05-27  Jonathan Wakely  <jwakely@redhat.com>
 347
 348         PR libstdc++/105671
 349         * include/std/sstream (basic_stringbuf::_M_high_mark): Add
 350         always_inline attribute.
 351
 352 2022-06-08  Jonathan Wakely  <jwakely@redhat.com>
 353
 354         Backported from master:
 355         2022-05-26  Jonathan Wakely  <jwakely@redhat.com>
 356
 357         PR libstdc++/105681
 358         * include/ext/pb_ds/detail/resize_policy/hash_prime_size_policy_imp.hpp:
 359         Limit ga_sizes array to values that fit in size_t.
 360         * include/ext/random [__SIZE_WIDTH < 32] (sfmt86243)
 361         (sfmt86243_64, sfmt132049, sfmt132049_64, sfmt216091)
 362         (sfmt216091_64): Do not declare.
 363
 364 2022-06-08  Jonathan Wakely  <jwakely@redhat.com>
 365
 366         Backported from master:
 367         2022-05-19  Jonathan Wakely  <jwakely@redhat.com>
 368
 369         * include/bits/basic_string.h: Do not include <ext/atomicity.h>
 370         here.
 371         * include/bits/cow_string.h: Include it here.
 372
 373 2022-05-27  Jonathan Wakely  <jwakely@redhat.com>
 374
 375         Backported from master:
 376         2022-05-26  Jonathan Wakely  <jwakely@redhat.com>
 377
 378         * python/libstdcxx/v6/printers.py (StdErrorCodePrinter): Make
 379         lookup for ios_errc and future_errc check versioned namespace.
 380         (StdAtomicPrinter): Strip versioned namespace from typename.
 381
 382 2022-05-27  François Dumont  <fdumont@gcc.gnu.org>
 383
 384         Backported from master:
 385         2022-05-26  François Dumont  <fdumont@gcc.gnu.org>
 386
 387         * python/libstdcxx/v6/printers.py (StdSpanPrinter.__init__):
 388         Strip typename from version namespace.
 389
 390 2022-05-27  Jonathan Wakely  <jwakely@redhat.com>
 391
 392         Backported from master:
 393         2022-05-26  Jonathan Wakely  <jwakely@redhat.com>
 394
 395         * python/libstdcxx/v6/printers.py (SharedPointerPrinter): Strip
 396         versioned namespace from the template argument too.
 397
 398 2022-05-27  Jonathan Wakely  <jwakely@redhat.com>
 399
 400         Backported from master:
 401         2022-05-26  Jonathan Wakely  <jwakely@redhat.com>
 402
 403         * include/bits/stl_iterator.h (counted_iterator::operator++(int)):
 404         Add 'constexpr' as per LWG 3643.
 405         * testsuite/24_iterators/counted_iterator/lwg3643.cc: New test.
 406
 407 2022-05-27  Jonathan Wakely  <jwakely@redhat.com>
 408
 409         Backported from master:
 410         2022-05-19  Jonathan Wakely  <jwakely@redhat.com>
 411
 412         * include/std/memory_resource (polymorphic_allocator): Add
 413         non-template equality operator, as proposed for LWG 3683.
 414         * testsuite/20_util/polymorphic_allocator/lwg3683.cc: New test.
 415
 416 2022-05-27  Jonathan Wakely  <jwakely@redhat.com>
 417
 418         Backported from master:
 419         2022-05-20  Jonathan Wakely  <jwakely@redhat.com>
 420
 421         * testsuite/26_numerics/random/bernoulli_distribution/operators/values.cc:
 422         Run fewer iterations for simulator targets.
 423         * testsuite/26_numerics/random/binomial_distribution/operators/values.cc:
 424         Likewise.
 425         * testsuite/26_numerics/random/discrete_distribution/operators/values.cc:
 426         Likewise.
 427         * testsuite/26_numerics/random/geometric_distribution/operators/values.cc:
 428         Likewise.
 429         * testsuite/26_numerics/random/negative_binomial_distribution/operators/values.cc:
 430         Likewise.
 431         * testsuite/26_numerics/random/poisson_distribution/operators/values.cc:
 432         Likewise.
 433         * testsuite/26_numerics/random/uniform_int_distribution/operators/values.cc:
 434         Likewise.
 435
 436 2022-05-27  Jonathan Wakely  <jwakely@redhat.com>
 437
 438         Backported from master:
 439         2022-05-17  Jonathan Wakely  <jwakely@redhat.com>
 440
 441         * testsuite/20_util/expected/synopsis.cc: Skip for versioned
 442         namespace.
 443         * testsuite/27_io/headers/iosfwd/synopsis.cc: Likewise.
 444
 445 2022-05-27  Jonathan Wakely  <jwakely@redhat.com>
 446
 447         Backported from master:
 448         2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
 449
 450         * include/bits/mofunc_impl.h: Fix doxygen command.
 451
 452 2022-05-27  Jonathan Wakely  <jwakely@redhat.com>
 453
 454         Backported from master:
 455         2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
 456
 457         * include/std/future (launch): Make operators noexcept.
 458
 459 2022-05-16  Jonathan Wakely  <jwakely@redhat.com>
 460
 461         Backported from master:
 462         2022-05-16  Jonathan Wakely  <jwakely@redhat.com>
 463
 464         * doc/xml/manual/prerequisites.xml: Fix attributes for external
 465         hyperlink.
 466         * doc/html/manual/setup.html: Regenerate.
 467
 468 2022-05-16  Jonathan Wakely  <jwakely@redhat.com>
 469
 470         Backported from master:
 471         2022-05-16  Jonathan Wakely  <jwakely@redhat.com>
 472
 473         * doc/xml/manual/status_cxx2023.xml: Update with gcc-12 support.
 474         * doc/html/*: Regenerate.
 475
 476 2022-05-16  Jonathan Wakely  <jwakely@redhat.com>
 477
 478         Backported from master:
 479         2022-05-16  Jonathan Wakely  <jwakely@redhat.com>
 480
 481         * doc/xml/manual/intro.xml: Include new chapter.
 482         * doc/xml/manual/status_cxx2020.xml: Tweak release numbers.
 483         * doc/xml/manual/status_cxx2023.xml: New file.
 484         * doc/html/*: Regenerate.
 485
 486 2022-05-16  Jonathan Wakely  <jwakely@redhat.com>
 487
 488         Backported from master:
 489         2022-05-16  Jonathan Wakely  <jwakely@redhat.com>
 490
 491         * doc/html/manual/status.html: Regenerate.
 492         * doc/xml/manual/status_cxx2020.xml: Fix supported version for
 493         C++20 bit operations.
 494
 495 2022-05-13  Alexandre Oliva  <oliva@adacore.com>
 496
 497         Backported from master:
 498         2022-05-06  Alexandre Oliva  <oliva@adacore.com>
 499
 500         * include/experimental/bits/simd.h [__ALTIVEC__]: Require VSX
 501         for double, long long, and 64-bit long intrinsic types.
 502         [__ALTIVEC__] (__intrinsic_type): Mention 128-bit in
 503         preexisting long double diagnostic, adjust no-VSX double
 504         diagnostic to cover 64-bit long double as well.
 505
 506 2022-05-10  Jonathan Wakely  <jwakely@redhat.com>
 507
 508         Backported from master:
 509         2022-05-10  Jonathan Wakely  <jwakely@redhat.com>
 510
 511         PR libstdc++/105284
 512         * include/std/iosfwd: Add declarations for <spanstream> class
 513         templates and typedefs.
 514         * include/std/spanstream (basic_spanbuf, basic_ispanstream)
 515         (basic_ospanstream, basic_spanstream): Remove default template
 516         arguments.
 517         * testsuite/27_io/headers/iosfwd/synopsis.cc: Add <spanstream>
 518         declarations.
 519         * testsuite/27_io/headers/iosfwd/types.cc: Check <spanstream>
 520         default arguments.
 521
 522 2022-05-10  Jonathan Wakely  <jwakely@redhat.com>
 523
 524         Backported from master:
 525         2022-05-10  Jonathan Wakely  <jwakely@redhat.com>
 526
 527         PR libstdc++/105284
 528         * include/std/iosfwd: Add declarations for <synstream> class
 529         templates and typedefs.
 530         * include/std/syncstream (basic_syncbuf, basic_osyncstream):
 531         Remove default template arguments.
 532         * testsuite/27_io/headers/iosfwd/synopsis.cc: New test.
 533         * testsuite/27_io/headers/iosfwd/types.cc: New test.
 534
 535 2022-05-09  Jonathan Wakely  <jwakely@redhat.com>
 536
 537         Backported from master:
 538         2022-05-06  Jonathan Wakely  <jwakely@redhat.com>
 539
 540         PR libstdc++/104731
 541         * testsuite/27_io/filesystem/iterators/error_reporting.cc:
 542         Use a trailing char array as storage for dirent::d_name.
 543
 544 2022-05-06  Jonathan Wakely  <jwakely@redhat.com>
 545
 546         Backported from master:
 547         2022-05-06  Jonathan Wakely  <jwakely@redhat.com>
 548
 549         PR libstdc++/105502
 550         * include/bits/random.tcc
 551         (operator>>(basic_istream<C,T>&, normal_distribution<R>&)):
 552         Update state when __state_avail is false.
 553         * testsuite/26_numerics/random/normal_distribution/operators/serialize.cc:
 554         Check that deserialized object equals serialized one.
 555
 556 2022-05-06  Patrick Palka  <ppalka@redhat.com>
 557
 558         Backported from master:
 559         2022-05-02  Patrick Palka  <ppalka@redhat.com>
 560
 561         PR libstdc++/103911
 562         * src/c++17/floating_from_chars.cc (find_end_of_float): Accept
 563         two delimeters for the exponent part in the form of a possibly
 564         NULL string of length two.  Don't use std::tolower.
 565         (pattern): Adjust calls to find_end_of_float accordingly.
 566
 567 2022-05-06  Alexandre Oliva  <oliva@adacore.com>
 568
 569         Backported from master:
 570         2022-05-03  Alexandre Oliva  <oliva@adacore.com>
 571
 572         PR c++/105324
 573         * testsuite/20_util/from_chars/pr105324.cc: Guard test body
 574         with conditional for floating-point overloads of from_char.
 575
 576 2022-05-06  Release Manager
 577
 578         * GCC 12.1.0 released.
 579
 580 2022-05-02  Patrick Palka  <ppalka@redhat.com>
 581
 582         Backported from master:
 583         2022-05-02  Patrick Palka  <ppalka@redhat.com>
 584
 585         PR libstdc++/105441
 586         * src/c++17/floating_from_chars.cc (__floating_from_chars_hex):
 587         Also accept 'P' as the start of the exponent.
 588         * testsuite/20_util/from_chars/7.cc: Add corresponding testcase.
 589
 590 2022-04-29  Jonathan Wakely  <jwakely@redhat.com>
 591
 592         Backported from master:
 593         2022-04-29  Jonathan Wakely  <jwakely@redhat.com>
 594
 595         PR libstdc++/105417
 596         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt:
 597         Regenerate.
 598         * src/c++11/compatibility-ldbl-alt128.cc [_GLIBCXX_USE_DUAL_ABI]:
 599         Define __gnu_ieee128::num_get<C>::_M_extract_int[abi:cxx11]<I>
 600         symbols as aliases for corresponding symbols without abi-tag.
 601
 602 2022-04-29  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 603
 604         * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
 605         * config/abi/post/i386-solaris/amd64/baseline_symbols.txt:
 606         Likewise.
 607         * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
 608         * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
 609         Likewise.
 610
 611 2022-04-28  Jonathan Wakely  <jwakely@redhat.com>
 612
 613         * doc/xml/manual/status_cxx1998.xml: Refer to GCC 12 not
 614         mainline.
 615         * doc/xml/manual/status_cxx2011.xml: Likewise.
 616         * doc/xml/manual/status_cxx2014.xml: Likewise.
 617         * doc/xml/manual/status_cxx2017.xml: Likewise.
 618         * doc/xml/manual/status_cxx2020.xml: Likewise.
 619         * doc/xml/manual/status_cxxtr1.xml: Likewise.
 620         * doc/xml/manual/status_cxxtr24733.xml: Likewise.
 621         * doc/html/manual/status.html: Regenerate.
 622
 623 2022-04-28  Jonathan Wakely  <jwakely@redhat.com>
 624
 625         PR libstdc++/99290
 626         * src/c++17/fs_ops.cc (fs::copy): Pass error_code to
 627         directory_iterator constructor, and check on each iteration.
 628         * src/filesystem/ops.cc (fs::copy): Likewise.
 629         * testsuite/27_io/filesystem/operations/copy.cc: Check for
 630         errors during recursion.
 631         * testsuite/experimental/filesystem/operations/copy.cc:
 632         Likewise.
 633
 634 2022-04-28  François Dumont  <fdumont@gcc.gnu.org>
 635
 636         * config/abi/pre/gnu-versioned-namespace.ver: Remove
 637         std::random_device::* pattern.
 638
 639 2022-04-27  Jakub Jelinek  <jakub@redhat.com>
 640
 641         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
 642         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
 643         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
 644         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
 645         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
 646         * config/abi/post/powerpc-linux-gnu/baseline_symbols.txt: Update.
 647         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
 648         * config/abi/post/powerpc64-linux-gnu/32/baseline_symbols.txt: Update.
 649
 650 2022-04-27  Jonathan Wakely  <jwakely@redhat.com>
 651
 652         * python/libstdcxx/v6/printers.py (SharedPointerPrinter): Add
 653         support for atomic<shared_ptr<T>> and atomic<weak_ptr<T>>.
 654         (StdAtomicPrinter): New printer.
 655         (build_libstdcxx_dictionary): Register new printer.
 656         * testsuite/libstdc++-prettyprinters/cxx11.cc: Test std::atomic.
 657         * testsuite/libstdc++-prettyprinters/cxx20.cc: Test atomic smart
 658         pointers.
 659
 660 2022-04-26  Jonathan Wakely  <jwakely@redhat.com>
 661
 662         * include/bits/shared_ptr_atomic.h (atomic<shared_ptr>): Add
 663         constructor for constant initialization from nullptr_t.
 664         * testsuite/20_util/shared_ptr/atomic/atomic_shared_ptr.cc:
 665         Check for new constructor.
 666
 667 2022-04-26  Jonathan Wakely  <jwakely@redhat.com>
 668
 669         * include/bits/fs_path.h (hash<filesystem::path>): Define.
 670         * testsuite/27_io/filesystem/path/nonmember/hash_value.cc:
 671         Check std::hash specialization.
 672
 673 2022-04-25  Jonathan Wakely  <jwakely@redhat.com>
 674
 675         * include/bits/ptr_traits.h (__cpp_lib_constexpr_memory): Define
 676         conditionally.
 677         * include/bits/unique_ptr.h (__cpp_lib_constexpr_memory):
 678         Define for C++23.
 679         (default_delete, default_delete<T[]>, __uniq_ptr_impl)
 680         (unique_ptr, unique_ptr<T[], D>): Add constexpr to all member
 681         functions.
 682         * include/std/version (__cpp_lib_constexpr_memory): Define new
 683         value for C++23.
 684         * testsuite/20_util/unique_ptr/assign/constexpr.cc: New test.
 685         * testsuite/20_util/unique_ptr/comparison/constexpr.cc: New test.
 686         * testsuite/20_util/unique_ptr/cons/constexpr_c++20.cc: New test.
 687         * testsuite/20_util/unique_ptr/creation/constexpr.cc: New test.
 688         * testsuite/20_util/unique_ptr/modifiers/constexpr.cc: New test.
 689         * testsuite/20_util/unique_ptr/specialized_algorithms/constexpr.cc:
 690         New test.
 691
 692 2022-04-25  Jonathan Wakely  <jwakely@redhat.com>
 693
 694         PR libstdc++/105375
 695         * include/std/future (packaged_task): Add deduction guides.
 696         * testsuite/30_threads/packaged_task/cons/deduction.cc: New test.
 697
 698 2022-04-25  Philipp Fent  <fent@in.tum.de>
 699
 700         * python/libstdcxx/v6/printers.py (StdSpanPrinter._iterator):
 701         Rename as iterator.
 702         (StdInitializerListPrinter): Define new printer.
 703         (build_libstdcxx_dictionary): Register new printer.
 704         * testsuite/libstdc++-prettyprinters/cxx11.cc: Check printer for
 705         initializer_list.
 706
 707 2022-04-22  Thomas W Rodgers  <trodgers@redhat.com>
 708
 709         PR libstdc++/102994
 710         * include/bits/atomic_base.h (atomic_flag::notify_one,
 711         notify_all): Remove const qualification.
 712         (__atomic_base::notify_one, notify_all): Likewise.
 713         * include/std/atomic (atomic<bool>::notify_one, notify_all):
 714         Likewise.
 715         (atomic::notify_one, notify_all): Likewise.
 716         (atomic<T*>::notify_one, notify_all): Likewise.
 717         (atomic_notify_one, atomic_notify_all): Likewise.
 718         * testsuite/29_atomics/atomic/wait_notify/102994.cc: Adjust test
 719         to account for change in notify_one/notify_all signature.
 720
 721 2022-04-21  Patrick Palka  <ppalka@redhat.com>
 722
 723         * include/std/charconv (__from_chars_alnum_to_val_table):
 724         Simplify initialization of __lower/__upper_letters.
 725         (__from_chars_alnum_to_val): Default the template parameter to
 726         false.
 727         * src/c++17/floating_from_chars.cc (starts_with_ci): Don't
 728         assume the uppercase and lowercase letters are contiguous.
 729         (__floating_from_chars_hex): Likewise.
 730
 731 2022-04-21  Patrick Palka  <ppalka@redhat.com>
 732
 733         PR c++/105297
 734         PR c++/105322
 735         * include/std/charconv (__from_chars_alnum_to_val): Make
 736         initializer for __table dependent in an artificial way.
 737
 738 2022-04-21  Jonathan Wakely  <jwakely@redhat.com>
 739
 740         PR libstdc++/105324
 741         * src/c++17/floating_from_chars.cc (buffer_resource::do_allocate):
 742         Remove assertion.
 743         * testsuite/20_util/from_chars/pr105324.cc: New test.
 744
 745 2022-04-20  Jonathan Wakely  <jwakely@redhat.com>
 746
 747         * testsuite/21_strings/basic_string_view/operations/copy/char/constexpr.cc:
 748         Check correct feature test macro.
 749
 750 2022-04-20  Jonathan Wakely  <jwakely@redhat.com>
 751
 752         PR libstdc++/93602
 753         * doc/xml/manual/prerequisites.xml: Document libiconv
 754         workarounds.
 755         * doc/html/manual/setup.html: Regenerate.
 756         * src/Makefile.am (CXXLINK): Add $(LTLIBICONV).
 757         * src/Makefile.in: Regenerate.
 758
 759 2022-04-19  Patrick Palka  <ppalka@redhat.com>
 760
 761         * src/c++17/floating_to_chars.cc (_GLIBCXX_ASSERTIONS): Don't
 762         define.
 763         (__floating_to_chars_shortest): Add __builtin_unreachable calls to
 764         squelch false-positive -Wmaybe-uninitialized and -Wreturn-type
 765         warnings.
 766         (__floating_to_chars_precision): Likewise.
 767
 768 2022-04-19  Philipp Fent  <fent@in.tum.de>
 769
 770         * python/libstdcxx/v6/printers.py (StdSpanPrinter): Define.
 771         * testsuite/libstdc++-prettyprinters/cxx20.cc: Test it.
 772
 773 2022-04-19  Jonathan Wakely  <jwakely@redhat.com>
 774
 775         * acinclude.m4 (GLIBCXX_ENABLE_BACKTRACE): Fix shell operators.
 776         * configure: Regenerate.
 777
 778 2022-04-18  Patrick Palka  <ppalka@redhat.com>
 779
 780         * include/std/charconv (__from_chars_pow2_base): Manually
 781         unroll the first iteration of the main loop and simplify
 782         accordingly.
 783
 784 2022-04-15  Patrick Palka  <ppalka@redhat.com>
 785
 786         PR libstdc++/104858
 787         * include/bits/ranges_algo.h (__minmax_fn): Avoid dereferencing
 788         __first twice at the start.
 789         * testsuite/25_algorithms/minmax/constrained.cc (test06): New test.
 790
 791 2022-04-15  Patrick Palka  <ppalka@redhat.com>
 792
 793         * include/std/charconv (__from_chars_alnum_to_val_table): Define.
 794         (__from_chars_alnum_to_val): Define.
 795         (__from_chars_binary): Rename to ...
 796         (__from_chars_pow2_base): ... this.  Generalize to handle any
 797         power-of-two base using __from_chars_alnum_to_val.
 798         (__from_chars_digit): Optimize digit recognition to a single
 799         test instead of two tests.  Use [[__unlikely___]] attribute.
 800         (__from_chars_alpha_to_num): Remove.
 801         (__from_chars_alnum): Use __from_chars_alnum_to_val.  Use a
 802         nested loop for the overflow case.  Maintain a lower bound
 803         on the number of available bits in the result and use it to
 804         omit the overflow check.
 805         (from_chars): Adjust appropriately.
 806         * src/c++17/floating_from_chars.cc (ascii_to_hexit): Remove.
 807         (__floating_from_chars_hex): Use __from_chars_alnum_to_val
 808         to recognize a hex digit instead.
 809
 810 2022-04-14  Palmer Dabbelt  <palmer@rivosinc.com>
 811
 812         * acinclude.m4 (GLIBCXX_ENABLE_LOCK_POLICY): Force auto to mutex
 813         for RISC-V.
 814         * configure: Regenerate.
 815
 816 2022-04-14  Jonathan Wakely  <jwakely@redhat.com>
 817
 818         * doc/xml/manual/intro.xml: Fix comment.
 819
 820 2022-04-14  Jonathan Wakely  <jwakely@redhat.com>
 821
 822         * include/precompiled/stdc++.h: Include <stacktrace> and
 823         <stdatomic.h> for C++23.
 824
 825 2022-04-14  Jonathan Wakely  <jwakely@redhat.com>
 826
 827         PR libstdc++/105269
 828         * include/bits/stl_vector.h (__cpp_lib_constexpr_vector):
 829         Define.
 830         * include/c_compatibility/stdatomic.h (__cpp_lib_stdatomic_h):
 831         Define.
 832         * include/std/optional (__cpp_lib_optional): Define new value
 833         for C++23.
 834         (__cpp_lib_monadic_optional): Remove.
 835         * include/std/version (__cpp_lib_constexpr_vector): Define.
 836         (__cpp_lib_stdatomic_h): Define.
 837         (__cpp_lib_optional): Define new value for C++23.
 838         (__cpp_lib_monadic_optional): Remove.
 839         * testsuite/20_util/optional/monadic/and_then.cc: Adjust.
 840         * testsuite/20_util/optional/requirements.cc: Adjust for C++23.
 841         * testsuite/20_util/optional/version.cc: Likewise.
 842         * testsuite/23_containers/vector/cons/constexpr.cc: Check
 843         feature test macro.
 844         * testsuite/29_atomics/headers/stdatomic.h/c_compat.cc:
 845         Likewise.
 846         * testsuite/20_util/optional/monadic/version.cc: Removed.
 847         * testsuite/23_containers/vector/requirements/version.cc: New test.
 848         * testsuite/29_atomics/headers/stdatomic.h/version.cc: New test.
 849
 850 2022-04-12  Jonathan Wakely  <jwakely@redhat.com>
 851
 852         * acinclude.m4 (GLIBCXX_ENABLE_BACKTRACE): Check for mmap.
 853         * config.h.in: Regenerate.
 854         * configure: Regenerate.
 855
 856 2022-04-12  Jonathan Wakely  <jwakely@redhat.com>
 857
 858         * include/std/stacktrace (basic_stacktrace::current): Reallocate
 859         a smaller container if the unused capacity is larger than the
 860         used size.
 861
 862 2022-04-12  Jonathan Wakely  <jwakely@redhat.com>
 863
 864         * include/std/stacktrace (basic_stacktrace): Use _Impl::_M_clone
 865         or _Impl::_M_assign to initialize elements in allocated storage.
 866         (basic_stacktrace::_M_clear()): Use _Impl::_M_resize instead of
 867         _Impl::_M_destroy.
 868         (basic_stacktrace::_Impl::_M_destroy()): Replace with ...
 869         (basic_stacktrace::_Impl::_M_resize(size_type, allocator&)): New
 870         function.
 871         (basic_stacktrace::_Impl::_M_push_back): Use _M_xclone. Construct
 872         new element using allocator.
 873         (basic_stacktrace::_Impl::_M_clone): New function.
 874         (basic_stacktrace::_Impl::_M_xclone): New function.
 875         (basic_stacktrace::_Impl::_M_assign): New function.
 876
 877 2022-04-12  Jonathan Wakely  <jwakely@redhat.com>
 878
 879         * include/std/stacktrace (basic_stacktrace::_Impl::_M_allocate):
 880         Use nothrow new instead of try block for std::allocator.
 881         (basic_stacktrace::_Impl::_M_deallocate): Use delete for
 882         std::allocator.
 883
 884 2022-04-12  Jonathan Wakely  <jwakely@redhat.com>
 885
 886         * include/std/stacktrace (basic_stacktrace::current): Replace
 887         calls to _M_reserve and _S_curr_cb with call to _M_prepare.
 888         Check return value of backtrace_simple when max depth given.
 889         (basic_stacktrace::_M_reserve): Remove.
 890         (basic_stacktrace::_S_curr_cb): Remove.
 891         (basic_stacktrace::_M_prepare(size_type)): New function to
 892         reserve initial capacity and return callback.
 893         (basic_stacktrace::_Impl::_M_allocate): Remove check for 0 < n
 894         and remove redundant zeroing of _M_frames and _M_capacity.
 895         (basic_stacktrace::_Impl::_M_push_back): Add [[unlikely]]
 896         attribute. Assign _Impl instead of swapping.
 897         * testsuite/19_diagnostics/stacktrace/current.cc: New test.
 898
 899 2022-04-11  Jonathan Wakely  <jwakely@redhat.com>
 900
 901         * include/std/stacktrace (basic_stacktrace::_Impl::_M_allocate):
 902         Change [[unlikely]] attribute to [[likely]].
 903
 904 2022-04-11  Jonathan Wakely  <jwakely@redhat.com>
 905
 906         PR libstdc++/105031
 907         * include/std/stacktrace (basic_stacktrace::basic_stacktrace):
 908         Fix allocator usage in constructors.
 909         (basic_stacktrace::operator=(const basic_stacktrace&)): Do not
 910         try to reallocate using const allocator.
 911         (basic_stacktrace::operator=(basic_stacktrace&&)): Fix
 912         if-constexpr with non-constant condition. Do not allocate new
 913         storage if allocator propagates. Do not set _M_size if
 914         allocation fails.
 915         (basic_stacktrace::swap(basic_stacktrace&)): Fix typo. Add
 916         assertion that non-propagating allocators are equal.
 917         * testsuite/19_diagnostics/stacktrace/stacktrace.cc: New test.
 918
 919 2022-04-11  Jonathan Wakely  <jwakely@redhat.com>
 920
 921         * include/std/stacktrace (basic_stacktrace::current): Duplicate
 922         implementation into each overload. Add noinline attribute and
 923         skip current frame.
 924         (basic_stacktrace::max_size()): Call _Impl::_S_max_size.
 925         (basic_stacktrace::_S_curr_cb()): New function defining lambda.
 926         (basic_stacktrace::_Impl::_S_max_size): New function defining
 927         maximum size in terms of allocator and size_type.
 928         (basic_stacktrace::_Impl::_M_allocate): Check against
 929         max_size().
 930         * testsuite/19_diagnostics/stacktrace/entry.cc: Call function
 931         for non-constexpr checks. Check line number is correct.
 932
 933 2022-04-11  Jonathan Wakely  <jwakely@redhat.com>
 934
 935         * testsuite/20_util/stacktrace/entry.cc: Moved to...
 936         * testsuite/19_diagnostics/stacktrace/entry.cc: ...here.
 937         * testsuite/20_util/stacktrace/synopsis.cc: Moved to...
 938         * testsuite/19_diagnostics/stacktrace/synopsis.cc: ...here.
 939         * testsuite/20_util/stacktrace/version.cc: Moved to...
 940         * testsuite/19_diagnostics/stacktrace/version.cc: ...here.
 941
 942 2022-04-11  Jonathan Wakely  <jwakely@redhat.com>
 943
 944         * include/experimental/bits/fs_path.h (path): Define special
 945         members after path::_Cmpt is complete.
 946
 947 2022-04-08  Jonathan Wakely  <jwakely@redhat.com>
 948
 949         PR libstdc++/105153
 950         * include/std/expected
 951         (expected<void,E>::expected(expected<U,G>&&)): Fix constraints.
 952         * testsuite/20_util/expected/cons.cc: Check constructor.
 953
 954 2022-04-08  Jonathan Wakely  <jwakely@redhat.com>
 955
 956         PR libstdc++/105154
 957         * include/std/expected (expected<void, E>::swap): Set
 958         _M_has_value to false for objects that previously had a value.
 959         * testsuite/20_util/expected/swap.cc: Fix test to check void
 960         specialization.
 961
 962 2022-04-08  Jonathan Wakely  <jwakely@redhat.com>
 963
 964         PR libstdc++/105146
 965         * include/std/expected (bad_expected_access): Move constructor
 966         parameter.
 967         * testsuite/20_util/expected/bad.cc: New test.
 968
 969 2022-04-07  Hans-Peter Nilsson  <hp@axis.com>
 970
 971         * testsuite/20_util/expected/requirements.cc: Correct minimal-size
 972         test.
 973
 974 2022-04-02  Jakub Jelinek  <jakub@redhat.com>
 975
 976         PR libstdc++/105128
 977         * include/std/source_location (std::source_location::__impl): Move
 978         definition before using __builtin_ret_type.
 979
 980 2022-04-01  Jonathan Wakely  <jwakely@redhat.com>
 981
 982         * include/std/utility (unreachable): Define for C++23.
 983         * include/std/version (__cpp_lib_unreachable): Define.
 984         * src/c++11/debug.cc (__glibcxx_assert_fail): Check for valid
 985         arguments. Handle only the function being given.
 986         * testsuite/20_util/unreachable/1.cc: New test.
 987         * testsuite/20_util/unreachable/version.cc: New test.
 988
 989 2022-04-01  Jonathan Wakely  <jwakely@redhat.com>
 990
 991         * include/experimental/bits/fs_fwd.h (copy_file): Remove
 992         incorrect noexcept from declaration.
 993         * include/experimental/bits/fs_path.h (path::begin, path::end):
 994         Add noexcept to declarations, to match definitions.
 995
 996 2022-04-01  Timm Bäder  <tbaeder@redhat.com>
 997
 998         * include/bits/fs_ops.h: Fix filename in Doxygen comment.
 999         * include/experimental/bits/fs_ops.h: Likewise.
1000
1001 2022-03-31  Jonathan Wakely  <jwakely@redhat.com>
1002
1003         * libsupc++/new_opa.cc (aligned_alloc): Add comment.
1004
1005 2022-03-29  Jonathan Wakely  <jwakely@redhat.com>
1006
1007         * testsuite/18_support/exception/38732.cc: Disable for C++23.
1008         * testsuite/18_support/headers/exception/synopsis.cc: Likewise.
1009         * testsuite/18_support/unexpected_handler.cc: Likewise.
1010
1011 2022-03-29  Jonathan Wakely  <jwakely@redhat.com>
1012
1013         * libsupc++/compare (_Strong_order) [!__cpp_using_enum]: Add
1014         static data members for _Fp_fmt enumerators.
1015
1016 2022-03-29  Jonathan Wakely  <jwakely@redhat.com>
1017
1018         * include/std/version (__cpp_lib_variant): Fix conditions to
1019         match <variant>.
1020         (__cpp_lib_expected): Fix condition to match <expected>.
1021
1022 2022-03-28  Jonathan Wakely  <jwakely@redhat.com>
1023
1024         * testsuite/20_util/optional/monadic/and_then.cc: Fix typo.
1025         * testsuite/20_util/optional/monadic/transform.cc: Likewise.
1026         * testsuite/22_locale/codecvt/always_noconv/char/1.cc: Likewise.
1027         * testsuite/22_locale/codecvt/encoding/char/1.cc: Likewise.
1028         * testsuite/22_locale/codecvt/in/char/1.cc: Likewise.
1029         * testsuite/22_locale/codecvt/max_length/char/1.cc: Likewise.
1030         * testsuite/22_locale/codecvt/out/char/1.cc: Likewise.
1031         * testsuite/22_locale/codecvt/unshift/char/1.cc: Likewise.
1032
1033 2022-03-27  Jonathan Wakely  <jwakely@redhat.com>
1034
1035         * doc/doxygen/user.cfg.in: Add new header.
1036         * include/Makefile.am: Likewise.
1037         * include/Makefile.in: Regenerate.
1038         * include/precompiled/stdc++.h: Add new header.
1039         * include/std/version (__cpp_lib_expected): Define.
1040         * libsupc++/exception [__cplusplus > 202002] (unexpected)
1041         (unexpected_handler, set_unexpected): Do not declare for C++23.
1042         * include/std/expected: New file.
1043         * testsuite/20_util/expected/assign.cc: New test.
1044         * testsuite/20_util/expected/cons.cc: New test.
1045         * testsuite/20_util/expected/illformed_neg.cc: New test.
1046         * testsuite/20_util/expected/observers.cc: New test.
1047         * testsuite/20_util/expected/requirements.cc: New test.
1048         * testsuite/20_util/expected/swap.cc: New test.
1049         * testsuite/20_util/expected/synopsis.cc: New test.
1050         * testsuite/20_util/expected/unexpected.cc: New test.
1051         * testsuite/20_util/expected/version.cc: New test.
1052
1053 2022-03-25  Jonathan Wakely  <jwakely@redhat.com>
1054
1055         * include/std/bit (bit_cast, byteswap, endian): Add doxygen
1056         comments.
1057
1058 2022-03-23  Jonathan Wakely  <jwakely@redhat.com>
1059
1060         PR libstdc++/105027
1061         * include/std/bit (bit_cast): Add constraints.
1062         * testsuite/26_numerics/bit/bit.cast/105027.cc: New test.
1063
1064 2022-03-23  Jonathan Wakely  <jwakely@redhat.com>
1065
1066         * include/std/version [!_GLIBCXX_HOSTED]
1067         (__cpp_lib_hardware_interference_size): Define for freestanding.
1068         (__cpp_lib_bit_cast): Likewise.
1069         (__cpp_lib_is_layout_compatible): Likewise.
1070         (__cpp_lib_is_pointer_interconvertible): Likewise.
1071         (__cpp_lib_adaptor_iterator_pair_constructor): Do not define for
1072         freestanding.
1073         (__cpp_lib_invoke_r): Likewise.
1074         (__cpp_lib_ios_noreplace): Likewise.
1075         (__cpp_lib_monadic_optional): Likewise.
1076         (__cpp_lib_move_only_function): Likewise.
1077         (__cpp_lib_spanstream): Likewise.
1078         (__cpp_lib_stacktrace): Likewise.
1079         (__cpp_lib_string_contains): Likewise.
1080         (__cpp_lib_string_resize_and_overwrite): Likewise.
1081         (__cpp_lib_to_underlying): Likewise.
1082
1083 2022-03-23  Jonathan Wakely  <jwakely@redhat.com>
1084
1085         PR libstdc++/105021
1086         * include/bits/atomic_base.h [!_GLIBCXX_HOSTED]: Do not include
1087         <bits/atomic_wait.h> for freestanding.
1088
1089 2022-03-22  Hans-Peter Nilsson  <hp@axis.com>
1090
1091         * testsuite/20_util/from_chars/6.cc (test01) [FE_DOWNWARD]:
1092         Conditionalize call to fesetround.
1093
1094 2022-03-21  Jakub Jelinek  <jakub@redhat.com>
1095
1096         PR libstdc++/104990
1097         * include/bits/locale_facets_nonio.tcc (get): Don't check if do_get
1098         isn't overloaded if __clang__ is defined.
1099
1100 2022-03-18  Jonathan Wakely  <jwakely@redhat.com>
1101
1102         PR libstdc++/104242
1103         * include/std/any (any(T&&)): Revert change to constraints.
1104         * testsuite/20_util/any/cons/104242.cc: New test.
1105
1106 2022-03-18  Jonathan Wakely  <jwakely@redhat.com>
1107
1108         PR libstdc++/92546
1109         * include/pstl/glue_algorithm_defs.h: Replace <functional> with
1110         <bits/stl_pair.h>.
1111         * include/pstl/utils.h: Replace <iterator> with <type_traits>.
1112         (__pstl::__internal::__except_handler): Use std::__terminate
1113         instead of std::terminate.
1114         * src/c++17/fs_path.cc: Include <array>.
1115         * testsuite/25_algorithms/adjacent_find/constexpr.cc: Include
1116         <functional>.
1117         * testsuite/25_algorithms/binary_search/constexpr.cc: Likewise.
1118         * testsuite/25_algorithms/clamp/constrained.cc: Likewise.
1119         * testsuite/25_algorithms/equal/constrained.cc: Likewise.
1120         * testsuite/25_algorithms/for_each/constrained.cc: Likewise.
1121         * testsuite/25_algorithms/includes/constrained.cc: Likewise.
1122         * testsuite/25_algorithms/is_heap/constexpr.cc: Likewise.
1123         * testsuite/25_algorithms/is_heap_until/constexpr.cc: Likewise.
1124         * testsuite/25_algorithms/is_permutation/constrained.cc: Include
1125         <iterator>.
1126         * testsuite/25_algorithms/is_sorted/constexpr.cc: Include
1127         <functional>.
1128         * testsuite/25_algorithms/is_sorted_until/constexpr.cc:
1129         Likewise.
1130         * testsuite/25_algorithms/lexicographical_compare/constexpr.cc:
1131         Likewise.
1132         * testsuite/25_algorithms/lexicographical_compare/constrained.cc:
1133         Likewise.
1134         * testsuite/25_algorithms/lexicographical_compare_three_way/1.cc:
1135         Include <array>.
1136         * testsuite/25_algorithms/lower_bound/constexpr.cc: Include
1137         <functional>.
1138         * testsuite/25_algorithms/max/constrained.cc: Likewise.
1139         * testsuite/25_algorithms/max_element/constrained.cc: Likewise.
1140         * testsuite/25_algorithms/min/constrained.cc: Likewise.
1141         * testsuite/25_algorithms/min_element/constrained.cc: Likewise.
1142         * testsuite/25_algorithms/minmax_element/constrained.cc:
1143         Likewise.
1144         * testsuite/25_algorithms/mismatch/constexpr.cc: Likewise.
1145         * testsuite/25_algorithms/move/93872.cc: Likewise.
1146         * testsuite/25_algorithms/move_backward/93872.cc: Include
1147         <iterator>.
1148         * testsuite/25_algorithms/nth_element/constexpr.cc: Include
1149         <functional>.
1150         * testsuite/25_algorithms/partial_sort/constexpr.cc: Likewise.
1151         * testsuite/25_algorithms/partial_sort_copy/constexpr.cc:
1152         Likewise.
1153         * testsuite/25_algorithms/search/constexpr.cc: Likewise.
1154         * testsuite/25_algorithms/search_n/constrained.cc: Likewise.
1155         * testsuite/25_algorithms/set_difference/constexpr.cc: Likewise.
1156         * testsuite/25_algorithms/set_difference/constrained.cc:
1157         Likewise.
1158         * testsuite/25_algorithms/set_intersection/constexpr.cc:
1159         Likewise.
1160         * testsuite/25_algorithms/set_intersection/constrained.cc:
1161         Likewise.
1162         * testsuite/25_algorithms/set_symmetric_difference/constexpr.cc:
1163         Likewise.
1164         * testsuite/25_algorithms/set_union/constexpr.cc: Likewise.
1165         * testsuite/25_algorithms/set_union/constrained.cc: Likewise.
1166         * testsuite/25_algorithms/sort/constexpr.cc: Likewise.
1167         * testsuite/25_algorithms/sort_heap/constexpr.cc: Likewise.
1168         * testsuite/25_algorithms/transform/constrained.cc: Likewise.
1169         * testsuite/25_algorithms/unique/constexpr.cc: Likewise.
1170         * testsuite/25_algorithms/unique/constrained.cc: Likewise.
1171         * testsuite/25_algorithms/unique_copy/constexpr.cc: Likewise.
1172         * testsuite/25_algorithms/upper_bound/constexpr.cc: Likewise.
1173         * testsuite/std/ranges/adaptors/elements.cc: Include <vector>.
1174         * testsuite/std/ranges/adaptors/lazy_split.cc: Likewise.
1175         * testsuite/std/ranges/adaptors/split.cc: Likewise.
1176
1177 2022-03-17  Jonathan Wakely  <jwakely@redhat.com>
1178
1179         PR libstdc++/92546
1180         * include/bits/fs_path.h (path::make_preferred): Use
1181         handwritten loop instead of std::replace.
1182
1183 2022-03-17  Jonathan Wakely  <jwakely@redhat.com>
1184
1185         PR middle-end/104966
1186         * include/bits/locale_facets_nonio.tcc
1187         (__moneypunct_cache::_M_cache): Replace try-catch with RAII and
1188         make all string copies before any stores to *this.
1189
1190 2022-03-17  Jonathan Wakely  <jwakely@redhat.com>
1191
1192         * testsuite/util/testsuite_character.h: Fix comment.
1193
1194 2022-03-16  Jonathan Wakely  <jwakely@redhat.com>
1195
1196         PR libstdc++/103407
1197         * config/abi/pre/gnu.ver: Make version for std::from_chars
1198         depend on HAVE_USELOCALE macro.
1199         * testsuite/util/testsuite_abi.cc (compare_symbols): Treat
1200         std::from_chars for floating-point types as undesignated if
1201         not found in the baseline symbols file.
1202
1203 2022-03-16  Jonathan Wakely  <jwakely@redhat.com>
1204
1205         * include/std/charconv (__cpp_lib_to_chars): Only define when
1206         both from_chars and to_chars are supported for floating-point
1207         types.
1208         (from_chars, to_chars): Adjust preprocessor conditions guarding
1209         declarations.
1210         * include/std/version (__cpp_lib_to_chars): Adjust condition to
1211         match <charconv> definition.
1212         * src/c++17/floating_from_chars.cc (from_chars_strtod): New
1213         function template.
1214         (from_chars): Simplify preprocessor checks and use
1215         from_chars_strtod when appropriate.
1216
1217 2022-03-14  Jonathan Wakely  <jwakely@redhat.com>
1218
1219         PR libstdc++/104875
1220         * src/c++11/codecvt.cc (read_utf8_code_point): Use char32_t to
1221         hold octets that will be left-shifted.
1222
1223 2022-03-10  Jonathan Wakely  <jwakely@redhat.com>
1224
1225         PR libstdc++/104870
1226         * src/c++17/floating_from_chars.cc: Check __SIZE_WIDTH__ >= 32
1227         before using fast_float.
1228
1229 2022-03-10  Detlef Vollmann  <dv@vollmann.ch>
1230
1231         PR libstdc++/104866
1232         * include/bits/this_thread_sleep.h: Fix order of #endif and
1233         closing brace of namespace.
1234
1235 2022-03-10  Jonathan Wakely  <jwakely@redhat.com>
1236
1237         * libsupc++/compare (_Strong_order::_S_fp_cmp) [__vax__]:
1238         Handle NaN.
1239
1240 2022-03-10  Jonathan Wakely  <jwakely@redhat.com>
1241
1242         * libsupc++/compare (_Strong_ordering::_S_fp_cmp) [__vax__]: Use
1243         <=> comparison.
1244
1245 2022-03-09  Patrick Palka  <ppalka@redhat.com>
1246
1247         PR libstdc++/104859
1248         * src/c++17/floating_to_chars.cc (__floating_to_chars_hex):
1249         Be explicit when narrowing the shifted effective_mantissa,
1250         since it may have an integer-class type.
1251
1252 2022-03-08  Jonathan Wakely  <jwakely@redhat.com>
1253
1254         * include/bits/uses_allocator_args.h: Remove incorrect copyright
1255         notice.
1256
1257 2022-03-07  Jonathan Wakely  <jwakely@redhat.com>
1258
1259         PR libstdc++/104807
1260         * include/bits/c++config (__terminate, __glibcxx_assert_fail):
1261         Replace _GLIBCXX_VISIBILITY on function with visibility pragma.
1262         (__is_constant_evaluated): Add visibility pragma.
1263
1264 2022-03-07  Rasmus Villemoes  <rasmus.villemoes@prevas.dk>
1265
1266         * config/locale/vxworks/ctype_members.cc: Remove <iostream>
1267           include.
1268
1269 2022-03-05  Jonathan Wakely  <jwakely@redhat.com>
1270
1271         * include/bits/c++config (__glibcxx_assert_fail): Add visibility
1272         attribute.
1273         (__terminate): Likewise.
1274
1275 2022-03-04  Jonathan Wakely  <jwakely@redhat.com>
1276
1277         * libsupc++/compare (strong_order::_S_fp_cmp): Move typedef
1278         inside #if condition.
1279
1280 2022-03-03  Jonathan Wakely  <jwakely@redhat.com>
1281
1282         PR libstdc++/104748
1283         * testsuite/std/ranges/adaptors/all.cc: Use non-debug vector for
1284         constexpr test.
1285
1286 2022-03-03  Jonathan Wakely  <jwakely@redhat.com>
1287
1288         * testsuite/17_intro/names.cc (func): Undef on AIX.
1289
1290 2022-03-03  Jonathan Wakely  <jwakely@redhat.com>
1291
1292         PR libstdc++/96526
1293         * libsupc++/compare (strong_order): Add missing support for
1294         floating-point types.
1295         * testsuite/18_support/comparisons/algorithms/strong_order_floats.cc:
1296         New test.
1297
1298 2022-03-01  Jonathan Wakely  <jwakely@redhat.com>
1299
1300         PR middle-end/103984
1301         * include/bits/regex_compiler.h (_BracketMatcher::_M_char): Use
1302         default member initializer.
1303
1304 2022-02-24  Jonathan Wakely  <jwakely@redhat.com>
1305
1306         PR libstdc++/104602
1307         * include/std/source_location (source_location::current): Use
1308         deduced type of __builtin_source_location().
1309
1310 2022-02-22  Patrick Palka  <ppalka@redhat.com>
1311
1312         * include/bits/ranges_base.h (__detail::__is_initializer_list):
1313         Define.
1314         (viewable_range): Adjust as per P2415R2.
1315         * include/bits/ranges_cmp.h (__cpp_lib_ranges): Adjust value.
1316         * include/std/ranges (owning_view): Define as per P2415R2.
1317         (enable_borrowed_range<owning_view>): Likewise.
1318         (views::__detail::__can_subrange): Replace with ...
1319         (views::__detail::__can_owning_view): ... this.
1320         (views::_All::_S_noexcept): Sync with operator().
1321         (views::_All::operator()): Use owning_view instead of subrange
1322         as per P2415R2.
1323         * include/std/version (__cpp_lib_ranges): Adjust value.
1324         * testsuite/std/ranges/adaptors/all.cc (test06): Adjust now that
1325         views::all uses owning_view instead of subrange.
1326         (test08): New test.
1327         * testsuite/std/ranges/adaptors/lazy_split.cc (test09): Adjust
1328         now that rvalue non-view non-borrowed ranges are viewable.
1329         * testsuite/std/ranges/adaptors/split.cc (test06): Likewise.
1330
1331 2022-02-17  Jonathan Wakely  <jwakely@redhat.com>
1332
1333         PR libstdc++/104559
1334         * doc/xml/manual/evolution.xml: Document deprecation.
1335         * doc/html/manual/api.html: Regenerate.
1336         * include/bits/stl_bvector.h (insert(const_iterator, const bool&)):
1337         Remove default argument.
1338         (insert(const_iterator)): New overload with deprecated attribute.
1339         * testsuite/23_containers/vector/bool/modifiers/insert/104559.cc:
1340         New test.
1341
1342 2022-02-17  Jonathan Wakely  <jwakely@redhat.com>
1343
1344         * python/libstdcxx/v6/printers.py (StdErrorCodePrinter): Replace
1345         code that call cat->name() on std::error_category objects.
1346         Identify known categories by symbol name and use a hardcoded
1347         name. Print error code values as enumerators where appopriate.
1348         * testsuite/libstdc++-prettyprinters/cxx11.cc: Adjust expected
1349         name of custom category. Check io_errc and future_errc errors.
1350
1351 2022-02-15  Jonathan Wakely  <jwakely@redhat.com>
1352
1353         PR libstdc++/104542
1354         * include/bits/uses_allocator_args.h (make_obj_using_allocator)
1355         (uninitialized_construct_using_allocator): Add constexpr.
1356         * testsuite/20_util/uses_allocator/make_obj.cc: Check constexpr.
1357         * testsuite/20_util/uses_allocator/uninitialized_construct.cc: New test.
1358
1359 2022-02-14  Jonathan Wakely  <jwakely@redhat.com>
1360
1361         PR libstdc++/100912
1362         * config/locale/gnu/c_locale.h (__convert_from_v): Use inline
1363         namespace for IEEE128 long double mode.
1364         * config/os/gnu-linux/ldbl-ieee128-extra.ver: Add new symbol
1365         version and export __gnu_cxx_ieee128::__convert_from_v.
1366         * include/bits/locale_facets_nonio.tcc (money_put::__do_put):
1367         Make __ibm128 overload use snprintf directly
1368         * testsuite/util/testsuite_abi.cc: Add new symbol version.
1369         Remove stable IEEE128/LDBL versions.
1370
1371 2022-02-14  Jonathan Wakely  <jwakely@redhat.com>
1372
1373         PR libstdc++/103891
1374         * include/bits/c++config (_GLIBCXX_HAVE_COND_TRIVIAL_SPECIAL_MEMBERS):
1375         Remove.
1376         * include/std/variant: Check feature test macros instead.
1377         * include/std/version: Likewise.
1378
1379 2022-02-14  Jonathan Wakely  <jwakely@redhat.com>
1380
1381         * testsuite/20_util/unsynchronized_pool_resource/allocate.cc:
1382         Fix typo.
1383
1384 2022-02-14  Jonathan Wakely  <jwakely@redhat.com>
1385
1386         * src/c++17/floating_to_chars.cc (FLOAT128_TO_CHARS): Depend on
1387         LONG_DOUBLE_ALT128_COMPAT instead of USE_FLOAT128.
1388
1389 2022-02-11  Jonathan Wakely  <jwakely@redhat.com>
1390
1391         * testsuite/20_util/temporary_buffer.cc: Fix dg-warning target
1392         selector.
1393
1394 2022-02-11  Jonathan Wakely  <jwakely@redhat.com>
1395
1396         * testsuite/20_util/monotonic_buffer_resource/allocate.cc:
1397         Ignore -Walloc-larger-than warning.
1398         * testsuite/20_util/unsynchronized_pool_resource/allocate.cc:
1399         Likewise.
1400         * testsuite/29_atomics/atomic/cons/user_pod.cc: Compile with -O1
1401         to avoid linker error for __atomic_is_lock_free.
1402
1403 2022-02-10  Thomas Rodgers  <rodgert@appliantology.com>
1404
1405         * include/bits/atomic_wait.h (__waiter_base::_S_do_spin,
1406         __waiter_base::_S_do_spin_v): Change memory order from relaxed
1407         to acquire.
1408
1409 2022-02-10  Jonathan Wakely  <jwakely@redhat.com>
1410
1411         * include/c_compatibility/stdatomic.h (atomic_fetch_xor): Add
1412         using-declaration.
1413         (atomic_fetch_xor_explicit): Likewise.
1414         * testsuite/29_atomics/headers/stdatomic.h/c_compat.cc: Check
1415         arithmetic and logical operations for atomic_int.
1416
1417 2022-02-10  Jonathan Wakely  <jwakely@redhat.com>
1418
1419         * src/filesystem/dir-common.h (_GLIBCXX_HAVE_DIRFD): Undefine
1420         when <dirent.h> is not available.
1421         (_GLIBCXX_HAVE_UNLINKAT):  Likewise.
1422
1423 2022-02-09  Thomas Rodgers  <rodgert@appliantology.com>
1424
1425         PR libstdc++/104442
1426         * include/bits/atomic_wait.h (__waiter::_M_do_wait_v): Move spin
1427          loop inside do loop so that threads failing the wait, reload
1428          _M_ver.
1429
1430 2022-02-08  Jonathan Wakely  <jwakely@redhat.com>
1431
1432         * src/c++17/fs_dir.cc (_Dir(DIR*, const path&)): Change first
1433         parameter to _Dir_base&&.
1434         * src/filesystem/dir-common.h (_Dir_base(DIR*)): Remove.
1435         * src/filesystem/dir.cc (_Dir(DIR*, const path&)): Change first
1436         parameter to _Dir_base&&.
1437
1438 2022-02-08  Jonathan Wakely  <jwakely@redhat.com>
1439
1440         * acinclude.m4 (GLIBCXX_ENABLE_LOCK_POLICY): Add comment about
1441         checking for CAS on correct word size.
1442
1443 2022-02-08  Jonathan Wakely  <jwakely@redhat.com>
1444
1445         * testsuite/experimental/filesystem/operations/create_directories.cc:
1446         Adjust expected results for Windows.
1447
1448 2022-02-08  Jonathan Wakely  <jwakely@redhat.com>
1449
1450         PR libstdc++/104161
1451         * src/c++17/fs_dir.cc (fs::recursive_directory_iterator::__erase):
1452         [i_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Refresh entry._M_type member,
1453         instead of checking for errno values indicating a directory.
1454         * src/c++17/fs_ops.cc (fs::remove_all(const path&)): Use similar
1455         logic to non-throwing overload.
1456         (fs::remove_all(const path&, error_code&)): Add comments.
1457         * src/filesystem/ops-common.h: Likewise.
1458
1459 2022-02-04  Jonathan Wakely  <jwakely@redhat.com>
1460
1461         * src/filesystem/dir-common.h (_Dir_base::openat): Change return
1462         type to use portable posix::DIR alias.
1463
1464 2022-02-04  Jonathan Wakely  <jwakely@redhat.com>
1465
1466         * include/c_compatibility/stdatomic.h [__clang__]: Use
1467         #include_next <stdatomic.h>.
1468
1469 2022-02-04  Jonathan Wakely  <jwakely@redhat.com>
1470
1471         * include/experimental/bits/fs_ops.h (fs::copy_file): Remove
1472         noexcept.
1473         (fs::create_directories): Likewise.
1474         (fs::remove_all): Likewise.
1475         * src/filesystem/ops.cc (fs::copy_file): Remove noexcept.
1476         (fs::create_directories): Likewise.
1477         (fs::remove_all): Likewise.
1478
1479 2022-02-04  Jonathan Wakely  <jwakely@redhat.com>
1480
1481         PR libstdc++/104161
1482         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for dirfd
1483         and unlinkat.
1484         * config.h.in: Regenerate.
1485         * configure: Regenerate.
1486         * include/bits/fs_dir.h (recursive_directory_iterator): Declare
1487         remove_all overloads as friends.
1488         (recursive_directory_iterator::__erase): Declare new member
1489         function.
1490         * include/bits/fs_fwd.h (remove, remove_all): Declare.
1491         * src/c++17/fs_dir.cc (_Dir): Add filename_only parameter to
1492         constructor. Pass file descriptor argument to base constructor.
1493         (_Dir::dir_and_pathname, _Dir::open_subdir, _Dir::do_unlink)
1494         (_Dir::unlink, _Dir::rmdir): Define new member functions.
1495         (directory_iterator): Pass filename_only argument to _Dir
1496         constructor.
1497         (recursive_directory_iterator::_Dir_stack): Adjust constructor
1498         parameters to take a _Dir rvalue instead of creating one.
1499         (_Dir_stack::orig): Add data member for storing original path.
1500         (_Dir_stack::report_error): Define new member function.
1501         (__directory_iterator_nofollow): Move here from dir-common.h and
1502         fix value to be a power of two.
1503         (__directory_iterator_filename_only): Define new constant.
1504         (recursive_directory_iterator): Construct _Dir object and move
1505         into _M_dirs stack. Pass skip_permission_denied argument to first
1506         advance call.
1507         (recursive_directory_iterator::increment): Use _Dir::open_subdir.
1508         (recursive_directory_iterator::__erase): Define new member
1509         function.
1510         * src/c++17/fs_ops.cc (ErrorReporter, do_remove_all): Remove.
1511         (fs::remove_all): Use new recursive_directory_iterator::__erase
1512         member function.
1513         * src/filesystem/dir-common.h (_Dir_base): Add int parameter to
1514         constructor and use openat to implement nofollow semantics.
1515         (_Dir_base::fdcwd, _Dir_base::set_close_on_exec, _Dir_base::openat):
1516         Define new member functions.
1517         (__directory_iterator_nofollow): Move to fs_dir.cc.
1518         * src/filesystem/dir.cc (_Dir): Pass file descriptor argument to
1519         base constructor.
1520         (_Dir::dir_and_pathname, _Dir::open_subdir): Define new member
1521         functions.
1522         (recursive_directory_iterator::_Dir_stack): Adjust constructor
1523         parameters to take a _Dir rvalue instead of creating one.
1524         (recursive_directory_iterator): Check for new nofollow option.
1525         Construct _Dir object and move into _M_dirs stack. Pass
1526         skip_permission_denied argument to first advance call.
1527         (recursive_directory_iterator::increment): Use _Dir::open_subdir.
1528         * src/filesystem/ops.cc (fs::remove_all): Use C++17 remove_all.
1529
1530 2022-02-04  Jonathan Wakely  <jwakely@redhat.com>
1531
1532         * include/bits/allocator.h: Qualify std::allocator_traits in
1533         deprecated warnings.
1534         * libsupc++/exception (uncaught_exception): Add suggestion to
1535         deprecated warning.
1536
1537 2022-02-02  Jonathan Wakely  <jwakely@redhat.com>
1538
1539         * src/c++17/fs_dir.cc (fs::recursive_directory_iterator::pop):
1540         Add [[maybe_unused]] attribute.
1541         * src/filesystem/dir.cc (fs::recursive_directory_iterator::pop):
1542         Likewise.
1543
1544 2022-02-02  Jonathan Wakely  <jwakely@redhat.com>
1545
1546         * testsuite/23_containers/multiset/operators/cmp_c++20.cc: Use
1547         custom comparison function for multiset.
1548         * testsuite/23_containers/set/operators/cmp_c++20.cc: Use custom
1549         comparison function for set.
1550
1551 2022-02-02  Jonathan Wakely  <jwakely@redhat.com>
1552
1553         * include/bits/boost_concept_check.h (_OutputIteratorConcept):
1554         Change member function to data member of function pointer type.
1555
1556 2022-02-02  Martin Sebor  <msebor@redhat.com>
1557
1558         PR libstdc++/101831
1559         * include/std/array (begin): Declare const member function attribute
1560         const.
1561         (end, rbegin, rend, size, max_size, empty, data): Same.
1562         * testsuite/23_containers/array/capacity/empty.cc: Add test cases.
1563         * testsuite/23_containers/array/capacity/max_size.cc: Same.
1564         * testsuite/23_containers/array/capacity/size.cc: Same.
1565         * testsuite/23_containers/array/iterators/begin_end.cc: New test.
1566
1567 2022-02-02  Jonathan Wakely  <jwakely@redhat.com>
1568
1569         * testsuite/27_io/filesystem/iterators/error_reporting.cc: Use
1570         autoconf macro to check whether d_type is present.
1571         * testsuite/experimental/filesystem/iterators/error_reporting.cc:
1572         Likewise.
1573
1574 2022-02-01  Jonathan Wakely  <jwakely@redhat.com>
1575
1576         * testsuite/27_io/filesystem/iterators/97731.cc: New test.
1577         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
1578         Check follow_directory_symlink option.
1579         * testsuite/experimental/filesystem/iterators/recursive_directory_iterator.cc:
1580         Likewise.
1581
1582 2022-02-01  Jonathan Wakely  <jwakely@redhat.com>
1583
1584         * src/c++17/fs_dir.cc (recursive_directory_iterator::increment):
1585         Reset state to past-the-end iterator on error.
1586         (fs::recursive_directory_iterator::pop(error_code&)): Likewise.
1587         (fs::recursive_directory_iterator::pop()): Check _M_dirs before
1588         it might get reset.
1589         * src/filesystem/dir.cc (recursive_directory_iterator): Likewise,
1590         for the TS implementation.
1591         * testsuite/27_io/filesystem/iterators/error_reporting.cc: New test.
1592         * testsuite/experimental/filesystem/iterators/error_reporting.cc: New test.
1593
1594 2022-02-01  Jonathan Wakely  <jwakely@redhat.com>
1595
1596         * include/bits/fs_fwd.h (filesystem::perms): Fix comment.
1597
1598 2022-02-01  Jonathan Wakely  <jwakely@redhat.com>
1599
1600         PR libstdc++/104301
1601         * acinclude.m4 (GLIBCXX_ENABLE_CSTDIO): Print different messages
1602         for stdio_pure and stdio_posix options.
1603         * configure: Regenerate.
1604
1605 2022-02-01  Thomas Rodgers  <rodgert@appliantology.com>
1606
1607         * include/bits/atomic_wait.h: Change memory order from
1608         Acquire/Release with relaxed loads to SeqCst+Release for
1609         accesses to the waiter's count.
1610
1611 2022-01-31  Martin Liska  <mliska@suse.cz>
1612
1613         * acinclude.m4: Detect *_ld_is_mold and use it.
1614         * configure: Regenerate.
1615
1616 2022-01-30  Hans-Peter Nilsson  <hp@axis.com>
1617
1618         * testsuite/27_io/basic_istream/get/char/lwg3464.cc: Don't run on
1619         simulator targets.
1620         * testsuite/27_io/basic_istream/get/wchar_t/lwg3464.cc: Likewise.
1621
1622 2022-01-27  Jonathan Wakely  <jwakely@redhat.com>
1623
1624         PR libstdc++/100516
1625         * include/bits/deque.tcc (_M_range_initialize<ForwardIterator>):
1626         Add __builtin_unreachable to loop.
1627         * testsuite/23_containers/deque/100516.cc: New test.
1628
1629 2022-01-27  Jonathan Wakely  <jwakely@redhat.com>
1630
1631         * include/bits/ranges_base.h (ranges::advance): Avoid signed
1632         overflow. Do nothing if already equal to desired result.
1633         * testsuite/24_iterators/range_operations/advance_overflow.cc:
1634         New test.
1635
1636 2022-01-27  Martin Liska  <mliska@suse.cz>
1637
1638         PR libstdc++/104259
1639         * acinclude.m4: Fix typo.
1640         * configure: Regenerate.
1641
1642 2022-01-25  Jonathan Wakely  <jwakely@redhat.com>
1643
1644         PR libstdc++/104019
1645         * include/bits/istream.tcc (basic_istream::sentry): Add braces
1646         around try-block.
1647         * include/bits/shared_ptr_base.h (_Sp_counted_array_base::_M_init):
1648         Add pragmas to disable bogus warnings from PR 61596.
1649
1650 2022-01-25  Jonathan Wakely  <jwakely@redhat.com>
1651
1652         PR libstdc++/104217
1653         * src/c++17/fs_ops.cc (_GNU_SOURCE): Define.
1654         * src/filesystem/dir.cc (_GNU_SOURCE): Define.
1655         * src/filesystem/ops.cc (_GNU_SOURCE): Define.
1656
1657 2022-01-25  Jonathan Wakely  <jwakely@redhat.com>
1658
1659         PR libstdc++/104161
1660         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for
1661         fdopendir.
1662         * config.h.in: Regenerate.
1663         * configure: Regenerate.
1664         * src/c++17/fs_dir.cc (_Dir): Add nofollow flag to constructor
1665         and pass it to base class constructor.
1666         (directory_iterator): Pass nofollow flag to _Dir constructor.
1667         (fs::recursive_directory_iterator::increment): Likewise.
1668         * src/c++17/fs_ops.cc (do_remove_all): Use nofollow option for
1669         directory_iterator constructor. Move error check outside loop.
1670         * src/filesystem/dir-common.h (_Dir_base): Add nofollow flag to
1671         constructor and when it's set use ::open with O_NOFOLLOW and
1672         O_DIRECTORY.
1673         * src/filesystem/dir.cc (_Dir): Add nofollow flag to constructor
1674         and pass it to base class constructor.
1675         (directory_iterator): Pass nofollow flag to _Dir constructor.
1676         (fs::recursive_directory_iterator::increment): Likewise.
1677         * src/filesystem/ops.cc (remove_all): Use nofollow option for
1678         directory_iterator constructor. Move error check outside loop.
1679
1680 2022-01-23  Jonathan Wakely  <jwakely@redhat.com>
1681
1682         PR libstdc++/104032
1683         * include/std/spanstream (basic_spanbuf(basic_spanbuf&&)): Use
1684         mem-initializer for _M_buf.
1685         (basic_spanbuf::Operator=(basic_spanbuf&&)): Fix ill-formed
1686         member access.
1687         * testsuite/27_io/spanstream/2.cc: New test.
1688
1689 2022-01-23  Jonathan Wakely  <jwakely@redhat.com>
1690
1691         * src/c++17/floating_from_chars.cc (USE_STRTOD_FOR_FROM_CHARS):
1692         Define macro for case where std::from_chars is implemented in
1693         terms of strtod, strtof or strtold.
1694         (buffer_resource, valid_fmt, find_end_of_float, pattern)
1695         (from_chars_impl, make_result, reserve_string): Do not define
1696         unless USE_STRTOD_FOR_FROM_CHARS is defined.
1697         (from_chars): Define when at least one of USE_LIB_FAST_FLOAT and
1698         USE_STRTOD_FOR_FROM_CHARS is defined, instead of
1699         _GLIBCXX_HAVE_USELOCALE. Use fast_float for long double when it
1700         is binary64.
1701
1702 2022-01-23  Jonathan Wakely  <jwakely@redhat.com>
1703
1704         PR libstdc++/104174
1705         * include/bits/hashtable_policy.h (_Map_base): Add partial
1706         specialization for maps with const key types.
1707         * testsuite/23_containers/unordered_map/104174.cc: New test.
1708
1709 2022-01-23  Jonathan Wakely  <jwakely@redhat.com>
1710
1711         PR libstdc++/104019
1712         * include/bits/shared_ptr_base.h (_Sp_counted_base<>::_M_release):
1713         Set members to zero without type punning.
1714
1715 2022-01-21  Jonathan Wakely  <jwakely@redhat.com>
1716
1717         * testsuite/20_util/shared_ptr/cons/array.cc: Fix comment.
1718
1719 2022-01-21  Jonathan Wakely  <jwakely@redhat.com>
1720
1721         PR libstdc++/87193
1722         PR libstdc++/104019
1723         * include/bits/alloc_traits.h (__cpp_lib_allocator_traits_is_always_equal):
1724         Define as type long.
1725         * include/bits/allocator.h (__cpp_lib_incomplete_container_elements):
1726         Likewise.
1727         * include/bits/basic_string.h (__cpp_lib_string_udls): Likewise.
1728         * include/bits/chrono.h (__cpp_lib_chrono): Likewise.
1729         (__cpp_lib_chrono_udls): Likewise.
1730         * include/bits/move.h (__cpp_lib_addressof_constexpr): Likewise.
1731         * include/bits/node_handle.h (__cpp_lib_node_extract): Likewise.
1732         * include/bits/range_access.h (__cpp_lib_nonmember_container_access):
1733         Likewise.
1734         * include/bits/shared_ptr.h (__cpp_lib_enable_shared_from_this):
1735         Likewise.
1736         * include/bits/stl_algo.h (__cpp_lib_clamp): Likewise.
1737         (__cpp_lib_sample): Likewise.
1738         * include/bits/stl_algobase.h (__cpp_lib_robust_nonmodifying_seq_ops):
1739         Likewise.
1740         * include/bits/stl_function.h (__cpp_lib_transparent_operators):
1741         Likewise.
1742         * include/bits/stl_iterator.h (__cpp_lib_make_reverse_iterator):
1743         Likewise.
1744         * include/bits/stl_map.h (__cpp_lib_map_try_emplace):
1745         Likewise.
1746         * include/bits/stl_tree.h (__cpp_lib_generic_associative_lookup):
1747         Likewise.
1748         * include/bits/unique_ptr.h (__cpp_lib_make_unique):
1749         Likewise.
1750         * include/bits/unordered_map.h (__cpp_lib_unordered_map_try_emplace):
1751         Likewise.
1752         * include/c_global/cmath (__cpp_lib_hypot): Likewise.
1753         * include/c_global/cstddef (__cpp_lib_byte): Likewise.
1754         * include/std/atomic (__cpp_lib_atomic_is_always_lock_free):
1755         Likewise.
1756         * include/std/complex (__cpp_lib_complex_udls): Likewise.
1757         * include/std/filesystem (__cpp_lib_filesystem): Likewise.
1758         * include/std/functional (__cpp_lib_not_fn): Likewise.
1759         (__cpp_lib_boyer_moore_searcher): Likewise.
1760         * include/std/iomanip (__cpp_lib_quoted_string_io): Likewise.
1761         * include/std/mutex (__cpp_lib_scoped_lock): Likewise.
1762         * include/std/numeric (__cpp_lib_gcd_lcm): Likewise.
1763         (__cpp_lib_gcd, __cpp_lib_lcm): Likewise.
1764         * include/std/tuple (__cpp_lib_apply): Likewise.
1765         (__cpp_lib_make_from_tuple): Likewise.
1766         * include/std/type_traits (__cpp_lib_integral_constant_callable)
1767         (__cpp_lib_bool_constant, __cpp_lib_logical_traits)
1768         (__cpp_lib_is_null_pointer, __cpp_lib_transformation_trait_aliases)
1769         (__cpp_lib_result_of_sfinae, __cpp_lib_void_t)
1770         (__cpp_lib_is_swappable, __cpp_lib_is_invocable)
1771         (__cpp_lib_has_unique_object_representations)
1772         (__cpp_lib_is_aggregate): Likewise.
1773         * include/std/version: Likewise.
1774         * libsupc++/new (__cpp_lib_launder): Likewise.
1775
1776 2022-01-21  Jonathan Wakely  <jwakely@redhat.com>
1777
1778         * include/std/version (__cpp_lib_shared_ptr_arrays): Fix
1779         condition for C++17 definition.
1780
1781 2022-01-21  Jonathan Wakely  <jwakely@redhat.com>
1782
1783         * include/bits/shared_ptr_atomic.h (_Sp_atomic::_Atomic_count):
1784         Add constexpr.
1785         (_Sp_atomic::_M_ptr): Add default member-initializer.
1786         * testsuite/20_util/shared_ptr/atomic/atomic_shared_ptr.cc:
1787         Check constant initialization.
1788         * testsuite/20_util/weak_ptr/atomic_weak_ptr.cc: Likewise.
1789
1790 2022-01-20  Jonathan Wakely  <jwakely@redhat.com>
1791
1792         * src/c++11/cxx11-ios_failure.cc (__constinit): Define as
1793         equivalent attribute for Clang.
1794         * src/c++11/future.cc (__constinit): Likewise.
1795         * src/c++11/system_error.cc (__constinit): Likewise.
1796         * src/c++17/memory_resource.cc (__constinit): Likewise.
1797
1798 2022-01-20  Jonathan Wakely  <jwakely@redhat.com>
1799
1800         * scripts/testsuite_flags.in: Only add src/filesystem/.libs and
1801         src/libbacktrace/.libs to LDFLAGS if those directories exist.
1802
1803 2022-01-19  Jonathan Wakely  <jwakely@redhat.com>
1804
1805         * configure.ac (GLIBCXX_ENABLE_DEBUG_FLAGS): Remove -gdwarf-4
1806         from default flags.
1807         * configure: Regenerate.
1808
1809 2022-01-19  Jonathan Wakely  <jwakely@redhat.com>
1810
1811         PR libstdc++/104123
1812         * testsuite/29_atomics/headers/stdatomic.h/c_compat.cc: Include
1813         <stddef.h>.
1814
1815 2022-01-19  Jonathan Wakely  <jwakely@redhat.com>
1816
1817         * scripts/testsuite_flags.in: Add src/libbacktrace/.libs to
1818         linker search paths.
1819         * src/Makefile.am: Fix src/debug/libbacktrace build.
1820         * src/Makefile.in: Regenerate.
1821         * src/libbacktrace/Makefile.am: Use per-library CPPFLAGS
1822         variable. Use symlinks for the source files.
1823         * src/libbacktrace/Makefile.in: Regenerate.
1824
1825 2022-01-19  Matthias Kretz  <m.kretz@gsi.de>
1826
1827         * include/experimental/bits/simd.h (__floating_point_flags): Do
1828         not rely on math_errhandling to expand to a constant expression.
1829
1830 2022-01-19  Jonathan Wakely  <jwakely@redhat.com>
1831
1832         * doc/xml/manual/evolution.xml: Document deprecations.
1833         * doc/xml/manual/status_cxx2017.xml: Update status.
1834         * doc/html/*: Regenerate.
1835
1836 2022-01-19  Jonathan Wakely  <jwakely@redhat.com>
1837
1838         * include/bits/stl_tempbuf.h (get_temporary_buffer): Change
1839         _GLIBCXX14_DEPRECATED to _GLIBCXX17_DEPRECATED.
1840
1841 2022-01-19  Jonathan Wakely  <jwakely@redhat.com>
1842
1843         * include/bits/stl_pair.h (_PCC::_DeprConsPair): Remove unused
1844         function.
1845
1846 2022-01-19  Jonathan Wakely  <jwakely@redhat.com>
1847
1848         PR libstdc++/104101
1849         * include/bits/shared_ptr_atomic.h (_Sp_atomic::_Atomic_count::lock):
1850         Only use __thread_relax if __cpp_lib_atomic_wait is defined.
1851
1852 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
1853
1854         PR libstdc++/104099
1855         * include/bits/basic_string.h (basic_string(nullptr_t)): Only
1856         define for C++23.
1857         (operator=(nullptr_t)): Likewise.
1858         * include/bits/cow_string.h: Likewise.
1859         * include/std/string_view (basic_string_view(nullptr_t)):
1860         Likewise.
1861         * testsuite/21_strings/basic_string/cons/char/nullptr.cc: Adjust
1862         expected error. Add examples that become ill-formed in C++23.
1863         * testsuite/21_strings/basic_string_view/cons/char/nonnull.cc:
1864         Adjust expected errors.
1865         * testsuite/21_strings/basic_string_view/cons/wchar_t/nonnull.cc:
1866         Likewise.
1867
1868 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
1869
1870         PR libstdc++/104098
1871         * include/bits/stl_iterator.h (reverse_iterator): Check
1872         __cpp_lib_concepts instead of __cplusplus.
1873
1874 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
1875
1876         PR libstdc++/101124
1877         * include/bits/stl_pair.h (pair): Adjust constraints on
1878         deprecated constructors accepting literal zero as null pointer
1879         constant. Improve wording of deprecated attribute.
1880         * testsuite/20_util/pair/cons/99957.cc: Check that deprecated
1881         constructors do not cause ambiguities for copyable types.
1882
1883 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
1884
1885         * include/bits/stl_function.h (ptr_fun): Fix suggestion for
1886         non-deprecated alternative.
1887
1888 2022-01-18  Tom Honermann  <tom@honermann.net>
1889
1890         * acinclude.m4: Define config macros if uchar.h provides
1891         c8rtomb() and mbrtoc8().
1892         * config.h.in: Regenerate.
1893         * configure: Regenerate.
1894         * include/c_compatibility/uchar.h (c8rtomb, mbrtoc8): Define.
1895         * include/c_global/cuchar (c8rtomb, mbrtoc8): Likewise.
1896         * include/c_std/cuchar (c8rtomb, mbrtoc8): Likewise.
1897         * testsuite/21_strings/headers/cuchar/functions_std_cxx20.cc:
1898         New test.
1899         * testsuite/21_strings/headers/cuchar/functions_std_fchar8_t.cc:
1900         New test.
1901
1902 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
1903
1904         * include/Makefile.am: Install new header.
1905         * include/Makefile.in: Regenerate.
1906         * include/c_compatibility/stdatomic.h: New file.
1907         * testsuite/29_atomics/headers/stdatomic.h/c_compat.cc: New test.
1908
1909 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
1910
1911         PR libstdc++/104080
1912         * src/c++17/fast_float/LOCAL_PATCHES: Update.
1913         * src/c++17/fast_float/fast_float.h (FASTFLOAT_IS_BIG_ENDIAN):
1914         Define in terms of __BYTE_ORDER__.
1915
1916 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
1917
1918         PR libstdc++/104080
1919         * src/c++17/fast_float/LOCAL_PATCHES: UPDATE.
1920         * src/c++17/fast_float/fast_float.h (round): Use explicit
1921         template argument list for std::min.
1922
1923 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
1924
1925         * doc/xml/manual/status_cxx2017.xml: Update C++17 status.
1926         * doc/xml/manual/status_cxx2020.xml: Use 12.1 instead of 12 for
1927         upcoming release.
1928         * doc/html/manual/status.html: Regenerate.
1929
1930 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
1931
1932         * acinclude.m4 (GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING): Improve
1933         comments.
1934         * configure: Regenerate.
1935
1936 2022-01-17  Patrick Palka  <ppalka@redhat.com>
1937
1938         * src/c++17/floating_from_chars.cc: (USE_LIB_FAST_FLOAT):
1939         Conditionally define, and use it to conditionally include
1940         fast_float.
1941         (from_chars): Use fast_float for float and double when
1942         USE_LIB_FAST_FLOAT.
1943
1944 2022-01-17  Patrick Palka  <ppalka@redhat.com>
1945
1946         * src/c++17/fast_float/LOCAL_PATCHES: Update.
1947         * src/c++17/fast_float/fast_float.h (from_chars_advanced): In
1948         case of over/underflow, return errc::result_out_of_range and don't
1949         modify 'value'.
1950
1951 2022-01-17  Patrick Palka  <ppalka@redhat.com>
1952
1953         * src/c++17/fast_float/LOCAL_PATCHES: Update.
1954         * src/c++17/fast_float/fast_float.h: Apply local modifications.
1955
1956 2022-01-17  Patrick Palka  <ppalka@redhat.com>
1957
1958         * src/c++17/fast_float/LOCAL_PATCHES: New file.
1959         * src/c++17/fast_float/MERGE: New file.
1960         * src/c++17/fast_float/README.md: New file, copied from the
1961         fast_float repository.
1962         * src/c++17/fast_float/fast_float.h: New file, an amalgamation
1963         of the fast_float library.
1964
1965 2022-01-17  Patrick Palka  <ppalka@redhat.com>
1966
1967         * src/c++17/floating_from_chars.cc: Include <bit>.
1968         (ascii_to_hexit, starts_with_ci): Conditionally define.
1969         (__floating_from_chars_hex):  Conditionally define.
1970         (from_chars): Use __floating_from_chars_hex for
1971         chars_format::hex parsing of binary32/64 float/double.
1972         (testsuite/20_util/from_chars/7.cc): New test.
1973         * testsuite/20_util/from_chars/7.cc: New file.
1974
1975 2022-01-17  Jonathan Wakely  <jwakely@redhat.com>
1976
1977         * acinclude.m4 (GLIBCXX_ENABLE_BACKTRACE): New macro.
1978         * configure.ac: Use GLIBCXX_ENABLE_BACKTRACE.
1979         * include/Makefile.am: Add new header.
1980         * include/Makefile.in: Regenerate.
1981         * include/std/stacktrace: New header.
1982         * include/std/version (__cpp_lib_stacktrace): Define.
1983         * Makefile.in: Regenerate.
1984         * config.h.in: Regenerate.
1985         * configure: Regenerate.
1986         * doc/Makefile.in: Regenerate.
1987         * libsupc++/Makefile.in: Regenerate.
1988         * po/Makefile.in: Regenerate.
1989         * python/Makefile.in: Regenerate.
1990         * src/Makefile.am: Regenerate.
1991         * src/Makefile.in: Regenerate.
1992         * src/c++11/Makefile.in: Regenerate.
1993         * src/c++17/Makefile.in: Regenerate.
1994         * src/c++20/Makefile.in: Regenerate.
1995         * src/c++98/Makefile.in: Regenerate.
1996         * src/filesystem/Makefile.in: Regenerate.
1997         * testsuite/Makefile.in: Regenerate.
1998         * src/libbacktrace/Makefile.am: New file.
1999         * src/libbacktrace/Makefile.in: New file.
2000         * src/libbacktrace/backtrace-rename.h: New file.
2001         * src/libbacktrace/backtrace-supported.h.in: New file.
2002         * src/libbacktrace/config.h.in: New file.
2003         * testsuite/lib/libstdc++.exp (check_effective_target_stacktrace):
2004         New proc.
2005         * testsuite/20_util/stacktrace/entry.cc: New test.
2006         * testsuite/20_util/stacktrace/synopsis.cc: New test.
2007         * testsuite/20_util/stacktrace/version.cc: New test.
2008
2009 2022-01-17  Jonathan Wakely  <jwakely@redhat.com>
2010
2011         * doc/xml/manual/status_cxx2020.xml: Use final C++20 option
2012         names.
2013         * doc/html/manual/status.html: Regenerate.
2014
2015 2022-01-17  Jonathan Wakely  <jwakely@redhat.com>
2016
2017         PR libstdc++/103650
2018         * include/Makefile.am: Rename LT_OBJDIR and STDC_HEADERS.
2019         * include/Makefile.in: Regenerate.
2020         * testsuite/17_intro/headers/c++1998/103650.cc: New test.
2021
2022 2022-01-17  Matthias Kretz  <m.kretz@gsi.de>
2023
2024         * include/experimental/bits/simd.h (__floating_point_flags): Do
2025         not rely on the presence of the math_errhandling macro.
2026
2027 2022-01-17  Jonathan Wakely  <jwakely@redhat.com>
2028
2029         * include/bits/shared_ptr_atomic.h (_Sp_atomic): Add typename
2030         to qualified-id for dependent type.
2031
2032 2022-01-17  Jonathan Wakely  <jwakely@redhat.com>
2033
2034         * doc/xml/manual/status_cxx2020.xml: Update.
2035         * doc/html/manual/status.html: Regenerate.
2036
2037 2022-01-17  Jonathan Wakely  <jwakely@redhat.com>
2038             Thomas Rodgers  <trodgers@redhat.com>
2039
2040         * include/bits/shared_ptr_atomic.h (__cpp_lib_atomic_shared_ptr):
2041         New macro.
2042         (_Sp_atomic): New class template.
2043         (atomic<shared_ptr<T>>, atomic<weak_ptr<T>>): New partial
2044         specializations.
2045         * include/bits/shared_ptr_base.h (__shared_count, __weak_count)
2046         (__shared_ptr, __weak_ptr): Declare _Sp_atomic as a friend.
2047         * include/std/version (__cpp_lib_atomic_shared_ptr): New macro.
2048         * testsuite/20_util/shared_ptr/atomic/atomic_shared_ptr.cc: New
2049         test.
2050         * testsuite/20_util/weak_ptr/atomic_weak_ptr.cc: New test.
2051
2052 2022-01-15  Matthias Kretz  <m.kretz@gsi.de>
2053
2054         * include/experimental/bits/simd.h: Move feature detection bools
2055         and add __have_avx512bitalg, __have_avx512vbmi2,
2056         __have_avx512vbmi, __have_avx512ifma, __have_avx512cd,
2057         __have_avx512vnni, __have_avx512vpopcntdq.
2058         (__detail::__machine_flags): New function which returns a unique
2059         uint64 depending on relevant -m and -f flags.
2060         (__detail::__odr_helper): New type alias for either an anonymous
2061         type or a type specialized with the __machine_flags number.
2062         (_SimdIntOperators): Change template parameters from _Impl to
2063         _Tp, _Abi because _Impl now has an __odr_helper parameter which
2064         may be _OdrEnforcer from the anonymous namespace, which makes
2065         for a bad base class.
2066         (many): Either add __odr_helper template parameter or mark as
2067         always_inline.
2068         * include/experimental/bits/simd_detail.h: Add defines for
2069         AVX512BITALG, AVX512VBMI2, AVX512VBMI, AVX512IFMA, AVX512CD,
2070         AVX512VNNI, AVX512VPOPCNTDQ, and AVX512VP2INTERSECT.
2071         * include/experimental/bits/simd_builtin.h: Add __odr_helper
2072         template parameter or mark as always_inline.
2073         * include/experimental/bits/simd_fixed_size.h: Ditto.
2074         * include/experimental/bits/simd_math.h: Ditto.
2075         * include/experimental/bits/simd_scalar.h: Ditto.
2076         * include/experimental/bits/simd_neon.h: Add __odr_helper
2077         template parameter.
2078         * include/experimental/bits/simd_ppc.h: Ditto.
2079         * include/experimental/bits/simd_x86.h: Ditto.
2080
2081 2022-01-14  Uroš Bizjak  <ubizjak@gmail.com>
2082
2083         * testsuite/22_locale/numpunct/members/char/3.cc:
2084         Require pt_PT locale instead of nl_NL.
2085         (test02): Use pt_PT locale instead of nl_NL.
2086
2087 2022-01-14  Jonathan Wakely  <jwakely@redhat.com>
2088
2089         PR libstdc++/91260
2090         PR libstdc++/91383
2091         PR libstdc++/95065
2092         * include/backward/binders.h (bind1st, bind2nd): Add deprecated
2093         attribute.
2094         * include/bits/refwrap.h (_Maybe_unary_or_binary_function):
2095         Disable deprecated warnings for base classes.
2096         (_Reference_wrapper_base): Likewise.
2097         * include/bits/shared_ptr_base.h (_Sp_owner_less): Likewise.
2098         * include/bits/stl_bvector.h (_Bit_iterator_base): Likewise.
2099         * include/bits/stl_function.h (unary_function, binary_function):
2100         Add deprecated attribute.
2101         (unary_negate, not1, binary_negate, not2, ptr_fun)
2102         (pointer_to_unary_function, pointer_to_binary_function)
2103         (mem_fun_t, const_mem_fun_t, mem_fun_ref_t, const_mem_fun_ref_t)
2104         (mem_fun1_t, const_mem_fun1_t, mem_fun_ref1_t)
2105         (const_mem_fun1_ref_t, mem_fun, mem_fun_ref): Add deprecated
2106         attributes.
2107         * include/bits/stl_iterator.h: Disable deprecated warnings for
2108         std::iterator base classes.
2109         * include/bits/stl_iterator_base_types.h (iterator): Add
2110         deprecated attribute.
2111         * include/bits/stl_map.h (map::value_compare): Disable
2112         deprecated warnings for base class.
2113         * include/bits/stl_multimap.h (multimap::value_compare):
2114         Likewise.
2115         * include/bits/stl_raw_storage_iter.h (raw_storage_iterator):
2116         Add deprecated attribute.
2117         * include/bits/stl_tempbuf.h (get_temporary_buffer): Likewise.
2118         * include/bits/stream_iterator.h: Disable deprecated warnings.
2119         * include/bits/streambuf_iterator.h: Likewise.
2120         * include/ext/bitmap_allocator.h: Remove unary_function base
2121         classes.
2122         * include/ext/functional: Disable deprecated warnings.
2123         * include/ext/rope: Likewise.
2124         * include/ext/throw_allocator.h: Likewise.
2125         * include/std/type_traits (result_of): Add deprecated attribute.
2126         * include/tr1/functional: Disable deprecated warnings.
2127         * include/tr1/functional_hash.h: Likewise.
2128         * testsuite/20_util/function_objects/binders/1.cc: Add
2129         -Wno-disable-deprecations.
2130         * testsuite/20_util/function_objects/binders/3113.cc: Likewise.
2131         * testsuite/20_util/function_objects/constexpr.cc: Add
2132         dg-warning.
2133         * testsuite/20_util/raw_storage_iterator/base.cc: Likewise.
2134         * testsuite/20_util/raw_storage_iterator/dr2127.cc: Likewise.
2135         * testsuite/20_util/raw_storage_iterator/requirements/base_classes.cc:
2136         Likewise.
2137         * testsuite/20_util/raw_storage_iterator/requirements/explicit_instantiation/1.cc:
2138         Likewise.
2139         * testsuite/20_util/raw_storage_iterator/requirements/typedefs.cc:
2140         Likewise.
2141         * testsuite/20_util/reference_wrapper/24803.cc:
2142         Likewise.
2143         * testsuite/20_util/reference_wrapper/typedefs.cc: Enable for
2144         C++20 and check for absence of nested types.
2145         * testsuite/20_util/shared_ptr/comparison/less.cc: Remove
2146         std::binary_function base class.
2147         * testsuite/20_util/temporary_buffer.cc: Add dg-warning.
2148         * testsuite/21_strings/basic_string/cons/char/69092.cc: Remove
2149         std::iterator base class.
2150         * testsuite/24_iterators/back_insert_iterator/requirements/base_classes.cc:
2151         Likewise.
2152         * testsuite/24_iterators/front_insert_iterator/requirements/base_classes.cc:
2153         Likewise.
2154         * testsuite/24_iterators/insert_iterator/requirements/base_classes.cc:
2155         Likewise.
2156         * testsuite/24_iterators/istream_iterator/requirements/base_classes.cc:
2157         Likewise.
2158         * testsuite/24_iterators/istreambuf_iterator/92285.cc:
2159         Likewise.
2160         * testsuite/24_iterators/istreambuf_iterator/requirements/base_classes.cc:
2161         Likewise.
2162         * testsuite/24_iterators/ostream_iterator/requirements/base_classes.cc:
2163         Likewise.
2164         * testsuite/24_iterators/ostreambuf_iterator/requirements/base_classes.cc:
2165         Likewise.
2166         * testsuite/24_iterators/reverse_iterator/requirements/base_classes.cc:
2167         Likewise.
2168         * testsuite/25_algorithms/copy/34595.cc:
2169         Likewise.
2170         * testsuite/25_algorithms/minmax/3.cc: Remove std::binary_function
2171         base class.
2172         * testsuite/25_algorithms/all_of/requirements/explicit_instantiation/2.cc:
2173         Disable deprecated warnings.
2174         * testsuite/25_algorithms/all_of/requirements/explicit_instantiation/pod.cc:
2175         Likewise.
2176         * testsuite/25_algorithms/any_of/requirements/explicit_instantiation/2.cc:
2177         Likewise.
2178         * testsuite/25_algorithms/any_of/requirements/explicit_instantiation/pod.cc:
2179         Likewise.
2180         * testsuite/25_algorithms/copy_if/requirements/explicit_instantiation/2.cc:
2181         Likewise.
2182         * testsuite/25_algorithms/copy_if/requirements/explicit_instantiation/pod.cc:
2183         Likewise.
2184         * testsuite/25_algorithms/count_if/requirements/explicit_instantiation/2.cc:
2185         Likewise.
2186         * testsuite/25_algorithms/count_if/requirements/explicit_instantiation/pod.cc:
2187         Likewise.
2188         * testsuite/25_algorithms/find_end/requirements/explicit_instantiation/2.cc:
2189         Likewise.
2190         * testsuite/25_algorithms/find_end/requirements/explicit_instantiation/pod.cc:
2191         Likewise.
2192         * testsuite/25_algorithms/find_first_of/requirements/explicit_instantiation/2.cc:
2193         Likewise.
2194         * testsuite/25_algorithms/find_first_of/requirements/explicit_instantiation/pod.cc:
2195         Likewise.
2196         * testsuite/25_algorithms/find_if/requirements/explicit_instantiation/2.cc:
2197         Likewise.
2198         * testsuite/25_algorithms/find_if/requirements/explicit_instantiation/pod.cc:
2199         Likewise.
2200         * testsuite/25_algorithms/find_if_not/requirements/explicit_instantiation/2.cc:
2201         Likewise.
2202         * testsuite/25_algorithms/find_if_not/requirements/explicit_instantiation/pod.cc:
2203         Likewise.
2204         * testsuite/25_algorithms/for_each/requirements/explicit_instantiation/2.cc:
2205         Likewise.
2206         * testsuite/25_algorithms/for_each/requirements/explicit_instantiation/pod.cc:
2207         Likewise.
2208         * testsuite/25_algorithms/is_partitioned/requirements/explicit_instantiation/2.cc:
2209         Likewise.
2210         * testsuite/25_algorithms/is_partitioned/requirements/explicit_instantiation/pod.cc:
2211         Likewise.
2212         * testsuite/25_algorithms/is_permutation/requirements/explicit_instantiation/2.cc:
2213         Likewise.
2214         * testsuite/25_algorithms/is_permutation/requirements/explicit_instantiation/pod.cc:
2215         Likewise.
2216         * testsuite/25_algorithms/none_of/requirements/explicit_instantiation/2.cc:
2217         Likewise.
2218         * testsuite/25_algorithms/none_of/requirements/explicit_instantiation/pod.cc:
2219         Likewise.
2220         * testsuite/25_algorithms/partition/requirements/explicit_instantiation/2.cc:
2221         Likewise.
2222         * testsuite/25_algorithms/partition/requirements/explicit_instantiation/pod.cc:
2223         Likewise.
2224         * testsuite/25_algorithms/partition_copy/requirements/explicit_instantiation/2.cc:
2225         Likewise.
2226         * testsuite/25_algorithms/partition_copy/requirements/explicit_instantiation/pod.cc:
2227         Likewise.
2228         * testsuite/25_algorithms/partition_point/requirements/explicit_instantiation/2.cc:
2229         Likewise.
2230         * testsuite/25_algorithms/partition_point/requirements/explicit_instantiation/pod.cc:
2231         Likewise.
2232         * testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/2.cc:
2233         Likewise.
2234         * testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/pod.cc:
2235         Likewise.
2236         * testsuite/25_algorithms/remove_copy_if/requirements/explicit_instantiation/2.cc:
2237         Likewise.
2238         * testsuite/25_algorithms/remove_copy_if/requirements/explicit_instantiation/pod.cc:
2239         Likewise.
2240         * testsuite/25_algorithms/remove_if/requirements/explicit_instantiation/2.cc:
2241         Likewise.
2242         * testsuite/25_algorithms/remove_if/requirements/explicit_instantiation/pod.cc:
2243         Likewise.
2244         * testsuite/25_algorithms/replace_copy_if/requirements/explicit_instantiation/2.cc:
2245         Likewise.
2246         * testsuite/25_algorithms/replace_copy_if/requirements/explicit_instantiation/pod.cc:
2247         Likewise.
2248         * testsuite/25_algorithms/replace_if/requirements/explicit_instantiation/2.cc:
2249         Likewise.
2250         * testsuite/25_algorithms/replace_if/requirements/explicit_instantiation/pod.cc:
2251         Likewise.
2252         * testsuite/25_algorithms/search/requirements/explicit_instantiation/2.cc:
2253         Likewise.
2254         * testsuite/25_algorithms/search/requirements/explicit_instantiation/pod.cc:
2255         Likewise.
2256         * testsuite/25_algorithms/search_n/requirements/explicit_instantiation/2.cc:
2257         Likewise.
2258         * testsuite/25_algorithms/search_n/requirements/explicit_instantiation/pod.cc:
2259         Likewise.
2260         * testsuite/25_algorithms/stable_partition/requirements/explicit_instantiation/2.cc:
2261         Likewise.
2262         * testsuite/25_algorithms/stable_partition/requirements/explicit_instantiation/pod.cc:
2263         Likewise.
2264         * testsuite/25_algorithms/transform/requirements/explicit_instantiation/2.cc:
2265         Likewise.
2266         * testsuite/25_algorithms/transform/requirements/explicit_instantiation/pod.cc:
2267         Likewise.
2268         * testsuite/27_io/basic_filebuf/underflow/wchar_t/9178.cc: Add
2269         dg-warning.
2270         * testsuite/ext/pb_ds/example/priority_queue_erase_if.cc:
2271         Likewise.
2272         * testsuite/ext/pb_ds/example/priority_queue_split_join.cc:
2273         Likewise.
2274         * testsuite/tr1/3_function_objects/reference_wrapper/typedefs.cc:
2275         Disable deprecated warnings.
2276         * testsuite/tr1/6_containers/hash/requirements/base_classes.cc:
2277         Likewise.
2278         * testsuite/util/regression/trait/erase_if_fn.hpp: Remove
2279         std::unary_function base classes.
2280         * testsuite/util/testsuite_iterators.h (output_iterator_wrapper):
2281         Remove std::iterator base classes.
2282
2283 2022-01-14  Jonathan Wakely  <jwakely@redhat.com>
2284
2285         * include/bits/shared_ptr.h (__cpp_lib_shared_ptr_weak_type):
2286         Correct type of macro value.
2287         (shared_ptr): Add additional friend declarations.
2288         (make_shared, allocate_shared): Constrain existing overloads and
2289         remove static_assert.
2290         * include/bits/shared_ptr_base.h (__cpp_lib_smart_ptr_for_overwrite):
2291         New macro.
2292         (_Sp_counted_ptr_inplace<T, Alloc, Lp>): New partial
2293         specialization for use with make_shared_for_overwrite.
2294         (__cpp_lib_shared_ptr_arrays): Update value for C++20.
2295         (_Sp_counted_array_base): New class template.
2296         (_Sp_counted_array): New class template.
2297         (__shared_count(_Tp*&, const _Sp_counted_array_base&, _Init)):
2298         New constructor for allocating shared arrays.
2299         (__shared_ptr(const _Sp_counted_array_base&, _Init)): Likewise.
2300         * include/std/version (__cpp_lib_shared_ptr_weak_type): Correct
2301         type.
2302         (__cpp_lib_shared_ptr_arrays): Update value for C++20.
2303         (__cpp_lib_smart_ptr_for_overwrite): New macro.
2304         * testsuite/20_util/shared_ptr/creation/99006.cc: Adjust
2305         expected errors.
2306         * testsuite/20_util/shared_ptr/creation/array.cc: New test.
2307         * testsuite/20_util/shared_ptr/creation/overwrite.cc: New test.
2308         * testsuite/20_util/shared_ptr/creation/version.cc: New test.
2309         * testsuite/20_util/unique_ptr/creation/for_overwrite.cc: Check
2310         feature test macro. Test non-trivial default-initialization.
2311
2312 2022-01-14  Jonathan Wakely  <jwakely@redhat.com>
2313
2314         * include/bits/stl_construct.h (_Construct, _Construct_novalue):
2315         Also cast away cv-qualifiers when converting pointer to void.
2316         * testsuite/20_util/allocator/void.cc: Test construct function
2317         with cv-qualified types.
2318
2319 2022-01-14  Jonathan Wakely  <jwakely@redhat.com>
2320
2321         PR libstdc++/103992
2322         * include/bits/stl_iterator.h (common_iterator): Use
2323         std::construct_at instead of placement new.
2324         * testsuite/24_iterators/common_iterator/1.cc: Check copy
2325         construction is usable in constant expressions.
2326
2327 2022-01-14  Jonathan Wakely  <jwakely@redhat.com>
2328
2329         * doc/xml/manual/status_cxx2011.xml: Document new tokens
2330         accepted by std::random_device constructor.
2331         * doc/html/manual/status.html: Regenerate.
2332
2333 2022-01-12  Patrick Palka  <ppalka@redhat.com>
2334
2335         * testsuite/20_util/to_chars/103955.cc: Add explicit dg-do
2336         directive.
2337
2338 2022-01-12  Patrick Palka  <ppalka@redhat.com>
2339
2340         PR libstdc++/103955
2341         * src/c++17/floating_to_chars.cc (__floating_to_chars_hex):
2342         Track the excess precision separately from the effective
2343         precision.  Avoid overflow in bounds check by splitting it into
2344         two checks.
2345         (__floating_to_chars_precision): Avoid overflow in bounds checks
2346         similarly.
2347         * testsuite/20_util/to_chars/103955.cc: New test.
2348
2349 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
2350
2351         PR libstdc++/103726
2352         * include/Makefile.am: Install <source_location> for
2353         freestanding.
2354         * include/Makefile.in: Regenerate.
2355         * include/std/version (__cpp_lib_source_location): Define for
2356         freestanding.
2357
2358 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
2359
2360         * include/std/ranges (ranges::lazy_split_view::_InnerIter::end()):
2361         Add neoxcept (LWG 3593).
2362
2363 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
2364
2365         * include/std/ranges (ranges::__detail::__box): Add constexpr to
2366         assignment operators (LWG 3572).
2367         * testsuite/std/ranges/adaptors/filter.cc: Check assignment of a
2368         view that uses copyable-box.
2369
2370 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
2371
2372         PR libstdc++/103726
2373         * include/Makefile.am: Install <coroutine> for freestanding.
2374         * include/Makefile.in: Regenerate.
2375         * include/std/coroutine: Adjust headers and preprocessor
2376         conditions.
2377         (__coroutine_traits_impl): Use concepts when available.
2378         [_GLIBCXX_HOSTED] (hash<coroutine_handle>): Define.
2379
2380 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
2381
2382         * include/std/ostream (operator<<(basic_ostream&, charT)):
2383         Use unformatted input if no padding is needed.
2384         (operator<<(basic_ostream<char>&, char)): Likewise.
2385
2386 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
2387
2388         PR libstdc++/103891
2389         * include/bits/c++config (_GLIBCXX_HAVE_COND_TRIVIAL_SPECIAL_MEMBERS):
2390         Define.
2391         * include/std/variant (__cpp_lib_variant): Only define C++20
2392         value when the compiler is known to support conditionally
2393         trivial destructors.
2394         * include/std/version (__cpp_lib_variant): Likewise.
2395
2396 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
2397
2398         * include/bits/stl_iterator.h (common_iterator): Add constexpr
2399         to all member functions (LWG 3574).
2400         * testsuite/24_iterators/common_iterator/1.cc: Evaluate some
2401         tests as constant expressions.
2402         * testsuite/24_iterators/common_iterator/2.cc: Likewise.
2403
2404 2022-01-10  Jakub Jelinek  <jakub@redhat.com>
2405
2406         PR libstdc++/77760
2407         * include/bits/locale_facets_nonio.h (__time_get_state): New struct.
2408         (time_get::_M_extract_via_format): Declare new method with
2409         __time_get_state& as an extra argument.
2410         * include/bits/locale_facets_nonio.tcc (_M_extract_via_format): Add
2411         __state argument, set various fields in it while parsing.  Handle %j,
2412         %U, %w and %W, fix up handling of %y, %Y and %C, don't adjust tm_hour
2413         for %p immediately.  Add a wrapper around the method without the
2414         __state argument for backwards compatibility.
2415         (_M_extract_num): Remove all __len == 4 special cases.
2416         (time_get::do_get_time, time_get::do_get_date, time_get::do_get): Zero
2417         initialize __state, pass it to _M_extract_via_format and finalize it
2418         at the end.
2419         (do_get_year): For 1-2 digit parsed years, map 0-68 to 2000-2068,
2420         69-99 to 1969-1999.  For 3-4 digit parsed years use that as year.
2421         (get): If do_get isn't overloaded from the locale_facets_nonio.tcc
2422         version, don't call do_get but call _M_extract_via_format instead to
2423         pass around state.
2424         * config/abi/pre/gnu.ver (GLIBCXX_3.4.30): Export _M_extract_via_format
2425         with extra __time_get_state and __time_get_state::_M_finalize_state.
2426         * src/c++98/locale_facets.cc (is_leap, day_of_the_week,
2427         day_of_the_year): New functions in anon namespace.
2428         (mon_yday): New var in anon namespace.
2429         (__time_get_state::_M_finalize_state): Define.
2430         * testsuite/22_locale/time_get/get/char/4.cc: New test.
2431         * testsuite/22_locale/time_get/get/wchar_t/4.cc: New test.
2432         * testsuite/22_locale/time_get/get_year/char/1.cc (test01): Parse 197
2433         as year 197AD instead of error.
2434         * testsuite/22_locale/time_get/get_year/char/5.cc (test01): Parse 1 as
2435         year 2001 instead of error.
2436         * testsuite/22_locale/time_get/get_year/char/6.cc: New test.
2437         * testsuite/22_locale/time_get/get_year/wchar_t/1.cc (test01): Parse
2438         197 as year 197AD instead of error.
2439         * testsuite/22_locale/time_get/get_year/wchar_t/5.cc (test01): Parse
2440         1 as year 2001 instead of error.
2441         * testsuite/22_locale/time_get/get_year/wchar_t/6.cc: New test.
2442
2443 2022-01-10  Jonathan Wakely  <jwakely@redhat.com>
2444
2445         PR libstdc++/103866
2446         * acinclude.m4 (GLIBCXX_COMPUTE_STDIO_INTEGER_CONSTANTS): Do
2447         nothing for freestanding builds.
2448         (GLIBCXX_ENABLE_HOSTED): Define FREESTANDING_FLAGS.
2449         * configure.ac: Do not use AC_LIBTOOL_DLOPEN when configured
2450         with --without-headers.  Do not use GCC_HEADER_STDINT for
2451         freestanding builds.
2452         * libsupc++/Makefile.am (HOSTED_CXXFLAGS): Use -ffreestanding
2453         for freestanding builds.
2454         * configure: Regenerate.
2455         * Makefile.in: Regenerate.
2456         * doc/Makefile.in: Regenerate.
2457         * include/Makefile.in: Regenerate.
2458         * libsupc++/Makefile.in: Regenerate.
2459         * po/Makefile.in: Regenerate.
2460         * python/Makefile.in: Regenerate.
2461         * src/Makefile.in: Regenerate.
2462         * src/c++11/Makefile.in: Regenerate.
2463         * src/c++17/Makefile.in: Regenerate.
2464         * src/c++20/Makefile.in: Regenerate.
2465         * src/c++98/Makefile.in: Regenerate.
2466         * src/filesystem/Makefile.in: Regenerate.
2467         * testsuite/Makefile.in: Regenerate.
2468
2469 2022-01-10  Jonathan Wakely  <jwakely@redhat.com>
2470
2471         * testsuite/28_regex/algorithms/regex_replace/char/103664.cc:
2472         Add dg-timeout-factor directive.
2473         * testsuite/28_regex/basic_regex/84110.cc: Likewise.
2474         * testsuite/28_regex/basic_regex/ctors/char/other.cc: Likewise.
2475         * testsuite/28_regex/match_results/102667.cc: Likewise.
2476
2477 2022-01-10  Jonathan Wakely  <jwakely@redhat.com>
2478
2479         * doc/xml/manual/using.xml: Update documentation around default
2480         -std option.
2481         * doc/html/*: Regenerate.
2482
2483 2022-01-10  Jonathan Wakely  <jwakely@redhat.com>
2484
2485         PR libstdc++/100017
2486         * src/c++17/Makefile.am (AM_CXXFLAGS): Add -nostdinc++.
2487         * src/c++17/Makefile.in: Regenerate.
2488
2489 2022-01-09  Sandra Loosemore  <sandra@codesourcery.com>
2490
2491         * testsuite/18_support/type_info/constexpr.cc: Add explicit
2492         -fdelete-null-pointer-checks option.
2493
2494 2022-01-06  Pavel I. Kryukov  <pavel.kryukov@phystech.edu>
2495             Jonathan Wakely  <jwakely@redhat.com>
2496
2497         PR libstdc++/103853
2498         * include/bits/forward_list.tcc (forward_list::merge): Check for
2499         self-merge.
2500         * testsuite/23_containers/forward_list/operations/merge.cc: New test.
2501
2502 2022-01-06  Jonathan Wakely  <jwakely@redhat.com>
2503
2504         * include/bits/regex.h (basic_regex, match_results): Qualify
2505         name in friend declaration, to work around Clang bug.
2506
2507 2022-01-06  Jonathan Wakely  <jwakely@redhat.com>
2508
2509         * testsuite/ext/rope/pthread7-rope.cc: Add dg-timeout-factor.
2510
2511 2022-01-06  Jonathan Wakely  <jwakely@redhat.com>
2512
2513         PR libstdc++/103911
2514         * include/std/charconv (__from_chars_alpha_to_num): Return
2515         char instead of unsigned char. Change invalid return value to
2516         127 instead of using numeric trait.
2517         (__from_chars_alnum): Fix comment. Do not use std::isdigit.
2518         Change type of variable to char.
2519
2520 2022-01-05  François Dumont  <fdumont@gcc.gnu.org>
2521
2522         PR libstdc++/68303
2523         * include/bits/hashtable_policy.h
2524         (_Hashtable_hash_traits<_Hash>): New.
2525         (_Hash_code_base<>::_M_hash_code(const _Hash_node_value<>&)): New.
2526         (_Hashtable_base<>::_M_key_equals): New.
2527         (_Hashtable_base<>::_M_equals): Use latter.
2528         (_Hashtable_base<>::_M_key_equals_tr): New.
2529         (_Hashtable_base<>::_M_equals_tr): Use latter.
2530         * include/bits/hashtable.h
2531         (_Hashtable<>::__small_size_threshold()): New, use _Hashtable_hash_traits.
2532         (_Hashtable<>::find): Loop through elements to look for key if size is lower
2533         than __small_size_threshold().
2534         (_Hashtable<>::_M_emplace(true_type, _Args&&...)): Likewise.
2535         (_Hashtable<>::_M_insert_unique(_Kt&&, _Args&&, const _NodeGenerator&)): Likewise.
2536         (_Hashtable<>::_M_compute_hash_code(const_iterator, const key_type&)): New.
2537         (_Hashtable<>::_M_emplace(const_iterator, false_type, _Args&&...)): Use latter.
2538         (_Hashtable<>::_M_find_before_node(const key_type&)): New.
2539         (_Hashtable<>::_M_erase(true_type, const key_type&)): Use latter.
2540         (_Hashtable<>::_M_erase(false_type, const key_type&)): Likewise.
2541         * src/c++11/hashtable_c++0x.cc: Include <bits/functional_hash.h>.
2542         * testsuite/util/testsuite_performance.h
2543         (report_performance): Use 9 width to display memory.
2544         * testsuite/performance/23_containers/insert_erase/unordered_small_size.cc:
2545         New performance test case.
2546
2547 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
2548
2549         PR libstdc++/103919
2550         * include/bits/basic_string.h (basic_string(const T&, size_t, size_t)):
2551         Relax constraints on string_view parameter.
2552         * include/bits/cow_string.h (basic_string(const T&, size_t, size_t)):
2553         Likewise.
2554         * testsuite/21_strings/basic_string/cons/char/103919.cc: New test.
2555
2556 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
2557
2558         * config/abi/pre/gnu.ver (GLIBCXX_3.4.30): Export new symbol for
2559         ARM EABI.
2560         * include/bits/c++config (_GLIBCXX23_CONSTEXPR): Define.
2561         * include/std/version (__cpp_lib_constexpr_typeinfo): Define.
2562         * libsupc++/tinfo.cc: Add #error to ensure non-inline definition
2563         is emitted.
2564         (type_info::__equal): Define alias symbol.
2565         * libsupc++/typeinfo (type_info::before): Combine different
2566         implementations into one.
2567         (type_info::operator==): Likewise. Use address equality for
2568         constant evaluation. Call __equal for targets that require the
2569         definition to be non-inline.
2570         * testsuite/18_support/type_info/constexpr.cc: New test.
2571
2572 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
2573
2574         * src/c++11/cxx11-ios_failure.cc (io_error_category): Define
2575         class and virtual functions as 'final'.
2576         (io_category_instance): Use constinit union to make the object
2577         immortal.
2578         * src/c++11/future.cc (future_error_category): Define class and
2579         virtual functions as 'final'.
2580         (future_category_instance): Use constinit union.
2581
2582 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
2583
2584         * python/libstdcxx/v6/printers.py (StdErrorCodePrinter): Strip
2585         versioned namespace from the type name that is printed.
2586
2587 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
2588
2589         * python/libstdcxx/v6/printers.py (StdRegexStatePrinter): New
2590         printer for std::regex NFA states.
2591
2592 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
2593
2594         * testsuite/23_containers/forward_list/operations/1.cc: Fill in
2595         placeholders in comments.
2596         * testsuite/23_containers/forward_list/operations/2.cc:
2597         Likewise.
2598         * testsuite/23_containers/forward_list/operations/3.cc:
2599         Likewise.
2600         * testsuite/23_containers/forward_list/operations/4.cc:
2601         Likewise.
2602         * testsuite/23_containers/forward_list/operations/5.cc:
2603         Likewise.
2604         * testsuite/23_containers/forward_list/operations/6.cc:
2605         Likewise.
2606         * testsuite/23_containers/forward_list/operations/7.cc:
2607         Likewise.
2608
2609 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
2610
2611         PR libstdc++/103848
2612         * include/bits/stl_deque.h (operator-): Do not use 0 as null
2613         pointer constant.
2614
2615 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
2616
2617         * include/bits/alloc_traits.h (allocator_traits<allocator<void>>):
2618         Use std::_Construct for construct.
2619
2620 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
2621
2622         PR libstdc++/103877
2623         * doc/xml/faq.xml: Add '-x c++' to preprocessor command.
2624         * doc/html/faq.html: Regenerate.
2625
2626 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
2627
2628         * include/bits/regex.h (__regex_algo_impl): Change __policy and
2629         __match_mode template parameters to be function parameters.
2630         (regex_match, regex_search): Pass policy and match mode as
2631         function arguments.
2632         * include/bits/regex.tcc (__regex_algo_impl): Change template
2633         parameters to function parameters.
2634         * include/bits/regex_compiler.h (_RegexTranslatorBase): Use
2635         'if constexpr' for conditions using template parameters.
2636         (_RegexTranslator): Likewise.
2637         * include/bits/regex_executor.tcc (_Executor::_M_handle_accept):
2638         Likewise.
2639         * testsuite/util/testsuite_regex.h (regex_match_debug)
2640         (regex_search_debug): Move template arguments to function
2641         arguments.
2642
2643 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
2644
2645         * testsuite/util/testsuite_regex.h (regex_match_debug): Compare
2646         results even if the match failed.
2647
2648 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
2649
2650         * include/bits/regex_compiler.tcc: Adjust all calls to
2651         __throw_regex_error.
2652         * include/bits/regex_error.h (__throw_regex_error): Add noreturn
2653         attribute.
2654         * include/bits/regex_scanner.tcc: Likewise.
2655         * src/c++11/regex.cc (desc): New helper function.
2656         (regex_error::regex_error(error_type)): Use desc to get a string
2657         corresponding to the error code.
2658
2659 \f
2660 Copyright (C) 2022 Free Software Foundation, Inc.
2661
2662 Copying and distribution of this file, with or without modification,
2663 are permitted in any medium without royalty provided the copyright
2664 notice and this notice are preserved.