libstdc++-v3/ChangeLog

   1 2022-06-30  Jonathan Wakely  <jwakely@redhat.com>
   2
   3         * include/bits/utility.h: Fix comment typos.
   4
   5 2022-06-30  Jonathan Wakely  <jwakely@redhat.com>
   6
   7         * src/c++17/fs_ops.cc (fs::temp_directory_path()): Include path
   8         in exception.
   9         (fs::temp_directory_path(error_code&)): Rearrange to more
  10         closely match the structure of the first overload.
  11         * src/filesystem/ops.cc (fs::temp_directory_path): Likewise.
  12         * testsuite/27_io/filesystem/operations/temp_directory_path.cc:
  13         Check that exception contains the path.
  14         * testsuite/experimental/filesystem/operations/temp_directory_path.cc:
  15         Likewise.
  16
  17 2022-06-30  Jonathan Wakely  <jwakely@redhat.com>
  18
  19         PR libstdc++/88881
  20         * src/filesystem/ops.cc (has_trailing_slash): New helper
  21         function.
  22         (fs::status): Strip trailing slashes.
  23         (fs::symlink_status): Likewise.
  24         * testsuite/experimental/filesystem/operations/temp_directory_path.cc:
  25         Clean the environment before each test and use TMP instead of
  26         TMPDIR so the test passes on Windows.
  27
  28 2022-06-28  Jonathan Wakely  <jwakely@redhat.com>
  29
  30         * src/filesystem/dir-common.h (_Dir_base::_At_path):
  31         Use char_type consistently for paths.
  32
  33 2022-06-28  Jonathan Wakely  <jwakely@redhat.com>
  34
  35         * src/c++17/fs_dir.cc (_Dir::dir_and_pathname):: Replace with
  36         current() returning _At_path.
  37         (_Dir::_Dir, _Dir::open_subdir, _Dir::do_unlink): Adjust.
  38         * src/filesystem/dir-common.h (_Dir_base::_At_path): New class.
  39         (_Dir_base::_Dir_Base, _Dir_base::openat): Use _At_path.
  40         * src/filesystem/dir.cc (_Dir::dir_and_pathname): Replace with
  41         current() returning _At_path.
  42         (_Dir::_Dir, _Dir::open_subdir): Adjust.
  43
  44 2022-06-28  Jonathan Wakely  <jwakely@redhat.com>
  45
  46         * src/c++17/fs_dir.cc (_Dir::_Dir) [!_GLIBCXX_HAVE_OPENAT]:
  47         Always store pathname if we don't have openat or unlinkat,
  48         because the full path is needed to open sub-directories and
  49         remove entries.
  50
  51 2022-06-28  Jonathan Wakely  <jwakely@redhat.com>
  52
  53         * testsuite/20_util/from_chars/4.cc: Only use log2 if C99 math
  54         functions are available.
  55
  56 2022-06-27  Alexandre Oliva  <oliva@adacore.com>
  57
  58         * testsuite/20_util/to_chars/long_double.cc: Use cmath
  59         long double overloads for nexttoward and ldexp.
  60
  61 2022-06-27  Alexandre Oliva  <oliva@adacore.com>
  62
  63         * testsuite/experimental/simd/standard_abi_usable.cc: Require
  64         cmath support.
  65         * testsuite/experimental/simd/standard_abi_usable_2.cc:
  66         Likewise.
  67
  68 2022-06-27  Alexandre Oliva  <oliva@adacore.com>
  69
  70         * testsuite/26_numerics/complex/proj.cc: Skip test in the
  71         circumstances in which the implementation of proj is known to
  72         be broken.
  73
  74 2022-06-27  Alexandre Oliva  <oliva@adacore.com>
  75
  76         * src/c++17/fs_dir.cc (dir_and_pathname): Use dirfd if
  77         _GLIBCXX_HAVE_OPENAT.
  78
  79 2022-06-27  Alexandre Oliva  <oliva@adacore.com>
  80
  81         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc
  82         (test06): Don't create symlinks when NO_SYMLINKS is defined.
  83
  84 2022-06-27  Alexandre Oliva  <oliva@adacore.com>
  85
  86         * testsuite/lib/dg-options.exp (add_options_for_net_ts):
  87         Add -Wl,--gc-sections for RTEMS targets.
  88         * testsuite/experimental/net/timer/waitable/dest.cc: Link-time
  89         xfail on RTEMS.
  90         * testsuite/experimental/net/timer/waitable/ops.cc: Likewise.
  91         * testsuite/experimental/net/internet/resolver/ops/lookup.cc:
  92         Execution-time xfail on RTEMS.
  93         * testsuite/experimental/net/internet/resolver/ops/reverse.cc:
  94         Likewise.
  95
  96 2022-06-27  Jonathan Wakely  <jwakely@redhat.com>
  97
  98         * testsuite/ext/mt_allocator/22309_thread.cc: Include <string>.
  99
 100 2022-06-27  Joel Brobecker  <brobecker@adacore.com>
 101             Jonathan Wakely  <jwakely@redhat.com>
 102
 103         * testsuite/util/testsuite_fs.h (__gnu_test::nonexistent_path):
 104         Always include a counter in the filename returned.
 105
 106 2022-06-27  Jonathan Wakely  <jwakely@redhat.com>
 107
 108         * include/bits/move_only_function.h (_Never_valueless_alt):
 109         Define partial specialization for std::move_only_function.
 110
 111 2022-06-27  Jonathan Wakely  <jwakely@redhat.com>
 112
 113         * include/std/variant (_Build_FUN::_S_fun): Define fallback case
 114         as deleted.
 115         (__accepted_index, _Extra_visit_slot_needed): Replace class
 116         templates with variable templates.
 117
 118 2022-06-27  Jonathan Wakely  <jwakely@redhat.com>
 119
 120         * include/bits/fs_path.h (__is_path_iter_src): Replace class
 121         template with variable template.
 122
 123 2022-06-27  Jonathan Wakely  <jwakely@redhat.com>
 124
 125         * include/bits/chrono.h (is_clock_v): Define to false.
 126         (is_clock_v<T>): Define partial specialization for true cases.
 127         (is_clock): Define in terms of is_clock_v.
 128
 129 2022-06-24  Xi Ruoyao  <xry111@xry111.site>
 130
 131         * scripts/extract_symvers.in: Use grep -E instead of egrep.
 132         * scripts/run_doxygen: Likewise.
 133
 134 2022-06-24  Alexandre Oliva  <oliva@adacore.com>
 135
 136         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for
 137         openat.
 138         * configure, config.h.in: Rebuilt.
 139         * src/filesystem/dir-common.h (openat): Use ::openat if
 140         _GLIBCXX_HAVE_OPENAT.
 141         * src/filesystem/dir.cc (dir_and_pathname): Use dirfd if
 142         _GLIBCXX_HAVE_OPENAT.
 143
 144 2022-06-24  Alexandre Oliva  <oliva@adacore.com>
 145
 146         * testsuite/27_io/filesystem/operations/rename.cc: xfail on
 147         rtems.
 148         * testsuite/experimental/filesystem/operations/rename.cc:
 149         Likewise.
 150
 151 2022-06-24  Alexandre Oliva  <oliva@adacore.com>
 152
 153         * testsuite/util/testsuite_fs.h (NO_LAST_WRITE_TIME): Define
 154         when appropriate.
 155         * testsuite/lib/libstdc++.exp
 156         (check_v3_target_fs_last_write_time): New.
 157         * testsuite/lib/dg-options.exp (dg-require-target-fs-lwt):
 158         New.
 159         * testsuite/27_io/filesystem/operations/last_write_time.cc:
 160         Skip the test if the features are unavailable.
 161         * testsuite/experimental/filesystem/operations/last_write_time.cc:
 162         Likewise.
 163
 164 2022-06-24  Alexandre Oliva  <oliva@adacore.com>
 165
 166         * testsuite/util/testsuite_fs.h (NO_SPACE): Define if
 167         appropriate.
 168         * testsuite/lib/libstdc++.exp (check_v3_target_fs_space): New.
 169         * testsuite/lib/dg-options.exp (dg-require-target-fs-space):
 170         New.
 171         * testsuite/27_io/filesystem/operations/space.cc: Require
 172         target-fs-space.
 173         * testsuite/experimental/filesystem/operations/space.cc:
 174         Likewise.
 175
 176 2022-06-24  Alexandre Oliva  <oliva@adacore.com>
 177
 178         * testsuite/util/testsuite_fs.h (NO_SYMLINKS): Define on
 179         mingw and when create_symlink is a dummy.
 180         * testsuite/27_io/filesystem/operations/symlink_status.cc:
 181         Drop mingw xfail.
 182         (test01, test02): Don't create symlinks when NO_SYMLINKS is
 183         defined.
 184         * testsuite/27_io/filesystem/operations/canonical.cc (test03):
 185         Likewise.
 186         * testsuite/27_io/filesystem/operations/copy.cc (test02):
 187         Likewise.
 188         * testsuite/27_io/filesystem/operations/create_directories.cc
 189         (test04): Likewise.
 190         * testsuite/27_io/filesystem/operations/create_directory.cc
 191         (test01): Likewise.
 192         * testsuite/27_io/filesystem/operations/permissions.cc
 193         (test03, test04): Likewise.
 194         * testsuite/27_io/filesystem/operations/remove.cc (test01):
 195         Likewise.
 196         * testsuite/27_io/filesystem/operations/remove_all.cc (test01):
 197         Likewise.
 198         * testsuite/27_io/filesystem/operations/rename.cc
 199         (test_symlinks): Likewise.
 200         * testsuite/27_io/filesystem/operations/weakly_canonical.cc
 201         (test01): Likewise.
 202         * testsuite/experimental/filesystem/iterators/recursive_directory_iterator.cc
 203         (test06): Likewise.
 204         * testsuite/experimental/filesystem/operations/copy.cc
 205         (test01): Likewise.
 206         * testsuite/experimental/filesystem/operations/create_directories.cc
 207         (test04): Likewise.
 208         * testsuite/experimental/filesystem/operations/create_directory.cc
 209         (test01): Likewise.
 210         * testsuite/experimental/filesystem/operations/permissions.cc
 211         (test03, test04): Likewise.
 212         * testsuite/experimental/filesystem/operations/remove.cc
 213         (test01): Likewise.
 214         * testsuite/experimental/filesystem/operations/remove_all.cc
 215         (test01): Likewise.
 216         * testsuite/experimental/filesystem/operations/rename.cc
 217         (test01): Likewise.
 218         * testsuite/lib/libstdc++.exp
 219         (v3_check_preprocessor_condition): Add optional inc parameter.
 220         Add it to the test program after include bits/c++config.h.
 221         (check_v3_target_fs_symlinks): New.
 222         * testsuite/lib/dg-options.exp
 223         (dg-require-target-fs-symlinks): New.
 224         * testsuite/27_io/filesystem/operations/read_symlink.cc:
 225         Replace mingw xfail with require target-fs-symlinks.
 226         * testsuite/experimental/filesystem/operations/read_symlink.cc:
 227         Likewise.
 228
 229 2022-06-24  Alexandre Oliva  <oliva@adacore.com>
 230
 231         * testsuite/27_io/filesystem/operations/copy.cc (test02):
 232         Select TO after creating FROM.
 233         (test03, test04): Likewise.
 234         * testsuite/experimental/filesystem/operations/copy.cc
 235         (test02, test03, test04): Likewise.
 236
 237 2022-06-24  Alexandre Oliva  <oliva@adacore.com>
 238
 239         * testsuite/30_threads/thread/native_handle/cancel.cc: Add an
 240         explicit cancellation point in case sleep_for lacks one.
 241
 242 2022-06-24  Alexandre Oliva  <oliva@adacore.com>
 243
 244         * testsuite/lib/dg-options.exp (add_options_for_net_ts): Add
 245         -lbsd for RTEMS targets.
 246
 247 2022-06-23  Jonathan Wakely  <jwakely@redhat.com>
 248
 249         * testsuite/27_io/filesystem/iterators/error_reporting.cc: Use
 250         rmdir to remove directories.
 251         * testsuite/experimental/filesystem/iterators/error_reporting.cc:
 252         Likewise.
 253
 254 2022-06-23  Jonathan Wakely  <jwakely@redhat.com>
 255
 256         * testsuite/26_numerics/random/random_device/entropy.cc: Use
 257         numeric_limits<unsigned>::digits.
 258
 259 2022-06-22  Alexandre Oliva  <oliva@adacore.com>
 260
 261         * libsupc++/eh_globals.cc [!_GLIBCXX_HAVE_TLS]
 262         (__eh_globals_init::~__eh_globals_init): Clear _S_init first.
 263
 264 2022-06-22  Alexandre Oliva  <oliva@adacore.com>
 265
 266         * testsuite/30_threads/this_thread/60421.cc (test02): Call
 267         sched_yield.
 268
 269 2022-06-22  Alexandre Oliva  <oliva@adacore.com>
 270
 271         * testsuite/20_util/to_chars/long_double.cc: Require cmath.
 272
 273 2022-06-22  Alexandre Oliva  <oliva@adacore.com>
 274
 275         * testsuite/23_containers/bitset/cons/dr1325-2.cc: Work around
 276         global struct bitset.
 277         * testsuite/23_containers/bitset/ext/15361.cc: Likewise.
 278         * testsuite/23_containers/bitset/input/1.cc: Likewise.
 279         * testsuite/23_containers/bitset/to_string/1.cc: Likewise.
 280         * testsuite/23_containers/bitset/to_string/dr396.cc: Likewise.
 281
 282 2022-06-17  Jonathan Wakely  <jwakely@redhat.com>
 283
 284         * testsuite/21_strings/basic_string/cons/char/105995.cc: Add
 285         missing #include.
 286
 287 2022-06-16  Jonathan Wakely  <jwakely@redhat.com>
 288
 289         PR libstdc++/105995
 290         * include/bits/basic_string.h (_M_use_local_data): Initialize
 291         the entire SSO buffer.
 292         * testsuite/21_strings/basic_string/cons/char/105995.cc: New test.
 293
 294 2022-06-16  Jonathan Wakely  <jwakely@redhat.com>
 295
 296         PR libstdc++/101482
 297         * include/ext/vstring.h (operator==): Always check lengths
 298         before comparing.
 299
 300 2022-06-15  François Dumont  <fdumont@gcc.gnu.org>
 301
 302         PR libstdc++/105717
 303         * include/bits/hashtable_policy.h (_ConvertToValueType): New.
 304         * include/bits/hashtable.h (_Hashtable<>::_M_insert_unique_aux): New.
 305         (_Hashtable<>::_M_insert(_Arg&&, const _NodeGenerator&, true_type)): Use latters.
 306         (_Hashtable<>::_M_insert(_Arg&&, const _NodeGenerator&, false_type)): Likewise.
 307         (_Hashtable(_InputIterator, _InputIterator, size_type, const _Hash&, const _Equal&,
 308         const allocator_type&, true_type)): Use this.insert range.
 309         (_Hashtable(_InputIterator, _InputIterator, size_type, const _Hash&, const _Equal&,
 310         const allocator_type&, false_type)): Use _M_insert.
 311         * testsuite/23_containers/unordered_map/cons/56112.cc: Check how many times conversion
 312         is done.
 313         * testsuite/23_containers/unordered_map/insert/105717.cc: New test.
 314         * testsuite/23_containers/unordered_set/insert/105717.cc: New test.
 315
 316 2022-06-14  Jonathan Wakely  <jwakely@redhat.com>
 317
 318         PR libstdc++/62187
 319         * include/bits/basic_string.h (operator==): Always compare
 320         lengths before checking string contents.
 321         [!__cpp_lib_three_way_comparison] (operator==, operator!=):
 322         Reorder arguments.
 323
 324 2022-06-14  Jonathan Wakely  <jwakely@redhat.com>
 325
 326         PR libstdc++/59048
 327         * include/bits/basic_string.h (compare): Define inline.
 328         * include/bits/basic_string.tcc (compare): Remove out-of-line
 329         definitions.
 330         * include/bits/cow_string.h (compare): Define inline.
 331         * testsuite/21_strings/basic_string/operations/compare/char/3.cc:
 332         New test.
 333
 334 2022-06-14  Jonathan Wakely  <jwakely@redhat.com>
 335
 336         * include/bits/new_allocator.h: Fix indentation.
 337         * include/ext/malloc_allocator.h: Likewise.
 338
 339 2022-06-14  Jonathan Wakely  <jwakely@redhat.com>
 340
 341         PR libstdc++/105957
 342         * include/bits/allocator.h (allocator::allocate): Check for
 343         overflow in constexpr allocation.
 344         * testsuite/20_util/allocator/105975.cc: New test.
 345
 346 2022-06-13  Mark Mentovai  <mark@mentovai.com>
 347
 348         * include/experimental/bits/fs_path.h (__detail::__null_terminated):
 349         Rename to __nul_terminated to avoid colliding with a macro in
 350         Apple's SDK.
 351
 352 2022-06-13  Jonathan Wakely  <jwakely@redhat.com>
 353
 354         * include/std/atomic (__atomic_val_t): Use __type_identity_t
 355         instead of atomic<T>::value_type, as per LWG 3220.
 356         * testsuite/29_atomics/atomic/lwg3220.cc: New test.
 357
 358 2022-06-10  Jonathan Wakely  <jwakely@redhat.com>
 359
 360         PR libstdc++/105844
 361         * include/experimental/numeric (experimental::gcd): Simplify
 362         assertions. Use __abs_r instead of __absu.
 363         (experimental::lcm): Likewise. Remove use of __detail::__lcm so
 364         overflow can be detected.
 365         * include/std/numeric (__detail::__absu): Rename to __abs_r and
 366         change to allow signed result type, so overflow can be detected.
 367         (__detail::__lcm): Remove.
 368         (gcd): Simplify assertions. Use __abs_r instead of __absu.
 369         (lcm): Likewise. Remove use of __detail::__lcm so overflow can
 370         be detected.
 371         * testsuite/26_numerics/gcd/gcd_neg.cc: Adjust dg-error lines.
 372         * testsuite/26_numerics/lcm/lcm_neg.cc: Likewise.
 373         * testsuite/26_numerics/gcd/105844.cc: New test.
 374         * testsuite/26_numerics/lcm/105844.cc: New test.
 375
 376 2022-06-10  Jonathan Wakely  <jwakely@redhat.com>
 377
 378         PR libstdc++/105880
 379         * libsupc++/eh_globals.cc (eh_globals): Ensure constant init and
 380         prevent destruction during termination.
 381         (__eh_globals_init::_M_init): Replace with static member _S_init.
 382         (__cxxabiv1::__cxa_get_globals_fast): Update.
 383         (__cxxabiv1::__cxa_get_globals): Likewise.
 384
 385 2022-06-10  Jonathan Wakely  <jwakely@redhat.com>
 386
 387         * include/bits/basic_string.h (__hash_str_base): New class
 388         template.
 389         (hash<basic_string<C, char_traits<C>, A>>): Define partial
 390         specialization for each of the standard character types.
 391         (hash<string>, hash<wstring>, hash<u8string>, hash<u16string>)
 392         (hash<u32string>): Remove explicit specializations.
 393         * include/std/string (__hash_string_base): Remove class
 394         template.
 395         (hash<pmr::string>, hash<pmr::wstring>, hash<pmr::u8string>)
 396         (hash<pmr::u16string>, hash<pmr::u32string>): Remove explicit
 397         specializations.
 398         * testsuite/21_strings/basic_string/hash/hash.cc: Test with
 399         custom allocators.
 400         * testsuite/21_strings/basic_string/hash/hash_char8_t.cc:
 401         Likewise.
 402
 403 2022-05-27  Jonathan Wakely  <jwakely@redhat.com>
 404
 405         PR libstdc++/105671
 406         * include/std/sstream (basic_stringbuf::_M_high_mark): Add
 407         always_inline attribute.
 408
 409 2022-05-26  Jonathan Wakely  <jwakely@redhat.com>
 410
 411         PR libstdc++/105681
 412         * include/ext/pb_ds/detail/resize_policy/hash_prime_size_policy_imp.hpp:
 413         Limit ga_sizes array to values that fit in size_t.
 414         * include/ext/random [__SIZE_WIDTH < 32] (sfmt86243)
 415         (sfmt86243_64, sfmt132049, sfmt132049_64, sfmt216091)
 416         (sfmt216091_64): Do not declare.
 417
 418 2022-05-26  Jonathan Wakely  <jwakely@redhat.com>
 419
 420         * python/libstdcxx/v6/printers.py (StdErrorCodePrinter): Make
 421         lookup for ios_errc and future_errc check versioned namespace.
 422         (StdAtomicPrinter): Strip versioned namespace from typename.
 423
 424 2022-05-26  Jonathan Wakely  <jwakely@redhat.com>
 425
 426         * src/c++11/Makefile.am: Add new source file.
 427         * src/c++11/Makefile.in: Regenerate.
 428         * src/c++11/cxx11-ios_failure.cc (iostream_category):
 429         Move to ...
 430         * src/c++11/ios_errcat.cc: New file.
 431         * testsuite/27_io/ios_base/failure/error_code.cc: Check that
 432         std::iostream_category() is defined and used for std::io_errc.
 433
 434 2022-05-26  Jonathan Wakely  <jwakely@redhat.com>
 435
 436         * include/bits/stl_iterator.h (counted_iterator::operator++(int)):
 437         Add 'constexpr' as per LWG 3643.
 438         * testsuite/24_iterators/counted_iterator/lwg3643.cc: New test.
 439
 440 2022-05-26  Jonathan Wakely  <jwakely@redhat.com>
 441
 442         * include/bits/functional_hash.h (__is_fast_hash): Add doxygen
 443         comment.
 444         * include/bits/hashtable.h: Do not include <bits/stl_function.h>
 445         here.
 446         * include/bits/hashtable_policy.h: Include <bits/stl_pair.h> and
 447         <bits/functional_hash.h>.
 448         * include/bits/unordered_map.h: Include required headers.
 449         * include/bits/unordered_set.h: Likewise.
 450         * include/std/unordered_map: Do not include headers for indirect
 451         dependencies.
 452         * include/std/unordered_set: Likewise.
 453
 454 2022-05-26  Jonathan Wakely  <jwakely@redhat.com>
 455
 456         * include/bits/ranges_algobase.h: Do not include
 457         <bits/stl_iterator_base_types.h>.
 458         * include/std/string: Likewise.
 459         * include/std/variant: Likewise.
 460
 461 2022-05-26  Nathan Sidwell  <nathan@acm.org>
 462
 463         * include/bits/hashtable.h: Include required headers.
 464         * include/bits/hashtable_policy.h: Likewise.
 465         * include/bits/stl_heap.h: Likewise.
 466         * include/bits/stl_iterator_base_funcs.h: Likewise.
 467
 468 2022-05-26  François Dumont  <fdumont@gcc.gnu.org>
 469
 470         * python/libstdcxx/v6/printers.py (StdSpanPrinter.__init__):
 471         Strip typename from version namespace.
 472
 473 2022-05-26  Jonathan Wakely  <jwakely@redhat.com>
 474
 475         * python/libstdcxx/v6/printers.py (SharedPointerPrinter): Strip
 476         versioned namespace from the template argument too.
 477
 478 2022-05-26  Jonathan Wakely  <jwakely@redhat.com>
 479
 480         * testsuite/21_strings/basic_string/modifiers/pop_back/char/1.cc:
 481         Moved to...
 482         * testsuite/21_strings/basic_string/modifiers/pop_back/char.cc:
 483         ...here.
 484         * testsuite/21_strings/basic_string/modifiers/pop_back/wchar_t/1.cc:
 485         Moved to...
 486         * testsuite/21_strings/basic_string/modifiers/pop_back/wchar_t.cc:
 487         ...here.
 488         * testsuite/21_strings/basic_string/modifiers/swap/wchar_t/constexpr.cc:
 489         Moved to...
 490         * testsuite/21_strings/basic_string/modifiers/swap/constexpr-wchar_t.cc:
 491         ...here.
 492         * testsuite/21_strings/basic_string/modifiers/swap/char/constexpr.cc:
 493         Moved to...
 494         * testsuite/21_strings/basic_string/modifiers/swap/constexpr.cc:
 495         ...here.
 496         * testsuite/21_strings/basic_string/operations/contains/char/1.cc:
 497         Moved to...
 498         * testsuite/21_strings/basic_string/operations/contains/char.cc:
 499         ...here.
 500         * testsuite/21_strings/basic_string/operations/contains/wchar_t/1.cc:
 501         Moved to...
 502         * testsuite/21_strings/basic_string/operations/contains/wchar_t.cc:
 503         ...here.
 504         * testsuite/21_strings/basic_string/operations/data/char/1.cc:
 505         Moved to...
 506         * testsuite/21_strings/basic_string/operations/data/char.cc:
 507         ...here.
 508         * testsuite/21_strings/basic_string/operations/data/wchar_t/1.cc:
 509         Moved to...
 510         * testsuite/21_strings/basic_string/operations/data/wchar_t.cc:
 511         ...here.
 512         * testsuite/21_strings/basic_string/operations/ends_with/char/1.cc:
 513         Moved to...
 514         * testsuite/21_strings/basic_string/operations/ends_with/char.cc:
 515         ...here.
 516         * testsuite/21_strings/basic_string/operations/ends_with/wchar_t/1.cc:
 517         Moved to...
 518         * testsuite/21_strings/basic_string/operations/ends_with/wchar_t.cc:
 519         ...here.
 520         * testsuite/21_strings/basic_string/operations/starts_with/char/1.cc:
 521         Moved to...
 522         * testsuite/21_strings/basic_string/operations/starts_with/char.cc:
 523         ...here.
 524         * testsuite/21_strings/basic_string/operations/starts_with/wchar_t/1.cc:
 525         Moved to...
 526         * testsuite/21_strings/basic_string/operations/starts_with/wchar_t.cc:
 527         ...here.
 528         * testsuite/21_strings/basic_string/operations/substr/char/1.cc:
 529         Moved to...
 530         * testsuite/21_strings/basic_string/operations/substr/char.cc:
 531         ...here.
 532         * testsuite/21_strings/basic_string/operations/substr/wchar_t/1.cc:
 533         Moved to...
 534         * testsuite/21_strings/basic_string/operations/substr/wchar_t.cc:
 535         ...here.
 536         * testsuite/21_strings/basic_string/range_access/char/1.cc:
 537         Moved to...
 538         * testsuite/21_strings/basic_string/range_access/char.cc:
 539         ...here.
 540         * testsuite/21_strings/basic_string/range_access/wchar_t/1.cc:
 541         Moved to...
 542         * testsuite/21_strings/basic_string/range_access/wchar_t.cc:
 543         ...here.
 544         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/char/1.cc:
 545         Moved to...
 546         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/char.cc:
 547         ...here.
 548         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/wchar_t/1.cc:
 549         Moved to...
 550         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/wchar_t.cc:
 551         ...here.
 552         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/char/1.cc:
 553         Moved to...
 554         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/char.cc:
 555         ...here.
 556         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/wchar_t/1.cc:
 557         Moved to...
 558         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/wchar_t.cc:
 559         ...here.
 560         * testsuite/21_strings/basic_string_view/modifiers/swap/char/1.cc:
 561         Moved to...
 562         * testsuite/21_strings/basic_string_view/modifiers/swap/char.cc:
 563         ...here.
 564         * testsuite/21_strings/basic_string_view/modifiers/swap/wchar_t/1.cc:
 565         Moved to...
 566         * testsuite/21_strings/basic_string_view/modifiers/swap/wchar_t.cc:
 567         ...here.
 568         * testsuite/21_strings/basic_string_view/operations/contains/char/1.cc:
 569         Moved to...
 570         * testsuite/21_strings/basic_string_view/operations/contains/char.cc:
 571         ...here.
 572         * testsuite/21_strings/basic_string_view/operations/contains/wchar_t/1.cc:
 573         Moved to...
 574         * testsuite/21_strings/basic_string_view/operations/contains/wchar_t.cc:
 575         ...here.
 576         * testsuite/21_strings/basic_string_view/operations/data/char/1.cc:
 577         Moved to...
 578         * testsuite/21_strings/basic_string_view/operations/data/char.cc:
 579         ...here.
 580         * testsuite/21_strings/basic_string_view/operations/data/wchar_t/1.cc:
 581         Moved to...
 582         * testsuite/21_strings/basic_string_view/operations/data/wchar_t.cc:
 583         ...here.
 584         * testsuite/21_strings/basic_string_view/operations/ends_with/char/1.cc:
 585         Moved to...
 586         * testsuite/21_strings/basic_string_view/operations/ends_with/char.cc:
 587         ...here.
 588         * testsuite/21_strings/basic_string_view/operations/ends_with/wchar_t/1.cc:
 589         Moved to...
 590         * testsuite/21_strings/basic_string_view/operations/ends_with/wchar_t.cc:
 591         ...here.
 592         * testsuite/21_strings/basic_string_view/operations/starts_with/char/1.cc:
 593         Moved to...
 594         * testsuite/21_strings/basic_string_view/operations/starts_with/char.cc:
 595         ...here.
 596         * testsuite/21_strings/basic_string_view/operations/starts_with/wchar_t/1.cc:
 597         Moved to...
 598         * testsuite/21_strings/basic_string_view/operations/starts_with/wchar_t.cc:
 599         ...here.
 600         * testsuite/21_strings/basic_string_view/operations/substr/char/1.cc:
 601         Moved to...
 602         * testsuite/21_strings/basic_string_view/operations/substr/char.cc:
 603         ...here.
 604         * testsuite/21_strings/basic_string_view/operations/substr/wchar_t/1.cc:
 605         Moved to...
 606         * testsuite/21_strings/basic_string_view/operations/substr/wchar_t.cc:
 607         ...here.
 608         * testsuite/21_strings/basic_string_view/range_access/char/1.cc:
 609         Moved to...
 610         * testsuite/21_strings/basic_string_view/range_access/char.cc:
 611         ...here.
 612         * testsuite/21_strings/basic_string_view/range_access/wchar_t/1.cc:
 613         Moved to...
 614         * testsuite/21_strings/basic_string_view/range_access/wchar_t.cc:
 615         ...here.
 616         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char/1.cc:
 617         Moved to...
 618         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char.cc:
 619         ...here.
 620         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char16_t/1.cc:
 621         Moved to...
 622         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char16_t.cc:
 623         ...here.
 624         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char32_t/1.cc:
 625         Moved to...
 626         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char32_t.cc:
 627         ...here.
 628         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char8_t/1.cc:
 629         Moved to...
 630         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char8_t.cc:
 631         ...here.
 632         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/1.cc:
 633         Moved to...
 634         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/int.cc:
 635         ...here.
 636         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/wchar_t/1.cc:
 637         Moved to...
 638         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/wchar_t.cc:
 639         ...here.
 640         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char/1.cc:
 641         Moved to...
 642         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char.cc:
 643         ...here.
 644         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char16_t/1.cc:
 645         Moved to...
 646         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char16_t.cc:
 647         ...here.
 648         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char32_t/1.cc:
 649         Moved to...
 650         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char32_t.cc:
 651         ...here.
 652         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char8_t/1.cc:
 653         Moved to...
 654         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char8_t.cc:
 655         ...here.
 656         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/1.cc:
 657         Moved to...
 658         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/int.cc:
 659         ...here.
 660         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/wchar_t/1.cc:
 661         Moved to...
 662         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/wchar_t.cc:
 663         ...here.
 664         * testsuite/21_strings/char_traits/requirements/explicit_instantiation/char/1.cc:
 665         Moved to...
 666         * testsuite/21_strings/char_traits/requirements/explicit_instantiation/char.cc:
 667         ...here.
 668         * testsuite/21_strings/char_traits/requirements/explicit_instantiation/char16_t/1.cc:
 669         Moved to...
 670         * testsuite/21_strings/char_traits/requirements/explicit_instantiation/char16_t.cc:
 671         ...here.
 672         * testsuite/21_strings/char_traits/requirements/explicit_instantiation/char32_t/1.cc:
 673         Moved to...
 674         * testsuite/21_strings/char_traits/requirements/explicit_instantiation/char32_t.cc:
 675         ...here.
 676         * testsuite/21_strings/char_traits/requirements/explicit_instantiation/char8_t/1.cc:
 677         Moved to...
 678         * testsuite/21_strings/char_traits/requirements/explicit_instantiation/char8_t.cc:
 679         ...here.
 680         * testsuite/21_strings/char_traits/requirements/explicit_instantiation/short/1.cc:
 681         Moved to...
 682         * testsuite/21_strings/char_traits/requirements/explicit_instantiation/short.cc:
 683         ...here.
 684         * testsuite/21_strings/char_traits/requirements/explicit_instantiation/wchar_t/1.cc:
 685         Moved to...
 686         * testsuite/21_strings/char_traits/requirements/explicit_instantiation/wchar_t.cc:
 687         ...here.
 688
 689 2022-05-26  Jonathan Wakely  <jwakely@redhat.com>
 690
 691         * testsuite/20_util/duration/requirements/explicit_instantiation/explicit_instantiation.cc:
 692         Moved to...
 693         * testsuite/20_util/duration/requirements/explicit_instantiation.cc: ...here.
 694         * testsuite/20_util/time_point/requirements/explicit_instantiation/explicit_instantiation.cc:
 695         Moved to...
 696         * testsuite/20_util/time_point/requirements/explicit_instantiation.cc: ...here.
 697         * testsuite/20_util/unique_ptr/requirements/explicit_instantiation/explicit_instantiation.cc:
 698         Moved to...
 699         * testsuite/20_util/unique_ptr/requirements/explicit_instantiation.cc: ...here.
 700
 701 2022-05-25  Jason Merrill  <jason@redhat.com>
 702
 703         * testsuite/20_util/function_objects/constexpr_searcher.cc: Add
 704         constexpr.
 705
 706 2022-05-20  Jonathan Wakely  <jwakely@redhat.com>
 707
 708         * testsuite/26_numerics/random/bernoulli_distribution/operators/values.cc:
 709         Run fewer iterations for simulator targets.
 710         * testsuite/26_numerics/random/binomial_distribution/operators/values.cc:
 711         Likewise.
 712         * testsuite/26_numerics/random/discrete_distribution/operators/values.cc:
 713         Likewise.
 714         * testsuite/26_numerics/random/geometric_distribution/operators/values.cc:
 715         Likewise.
 716         * testsuite/26_numerics/random/negative_binomial_distribution/operators/values.cc:
 717         Likewise.
 718         * testsuite/26_numerics/random/poisson_distribution/operators/values.cc:
 719         Likewise.
 720         * testsuite/26_numerics/random/uniform_int_distribution/operators/values.cc:
 721         Likewise.
 722
 723 2022-05-19  Jonathan Wakely  <jwakely@redhat.com>
 724
 725         * include/bits/char_traits.h: Only include <cstdint> when
 726         necessary.
 727         * include/std/stacktrace: Use __UINTPTR_TYPE__ instead of
 728         uintptr_t.
 729         * src/c++11/cow-stdexcept.cc: Include <stdint.h>.
 730         * src/c++17/floating_to_chars.cc: Likewise.
 731         * testsuite/20_util/assume_aligned/1.cc: Include <cstdint>.
 732         * testsuite/20_util/assume_aligned/3.cc: Likewise.
 733         * testsuite/20_util/shared_ptr/creation/array.cc: Likewise.
 734
 735 2022-05-19  Jonathan Wakely  <jwakely@redhat.com>
 736
 737         * include/bits/basic_string.h: Do not include <ext/atomicity.h>
 738         here.
 739         * include/bits/cow_string.h: Include it here.
 740
 741 2022-05-19  Jonathan Wakely  <jwakely@redhat.com>
 742
 743         * include/Makefile.am: Add new header.
 744         * include/Makefile.in: Regenerate.
 745         * include/bits/memory_resource.h: New file.
 746         * include/std/deque: Include <bits/memory_resource.h>.
 747         * include/std/forward_list: Likewise.
 748         * include/std/list: Likewise.
 749         * include/std/map: Likewise.
 750         * include/std/memory_resource (pmr::memory_resource): Move to
 751         new <bits/memory_resource.h> header.
 752         (pmr::polymorphic_allocator): Likewise.
 753         * include/std/regex: Likewise.
 754         * include/std/set: Likewise.
 755         * include/std/stacktrace: Likewise.
 756         * include/std/string: Likewise.
 757         * include/std/unordered_map: Likewise.
 758         * include/std/unordered_set: Likewise.
 759         * include/std/vector: Likewise.
 760         * testsuite/21_strings/basic_string/types/pmr_typedefs.cc:
 761         Remove <memory_resource> header and check construction.
 762         * testsuite/23_containers/deque/types/pmr_typedefs.cc: Likewise.
 763         * testsuite/23_containers/forward_list/pmr_typedefs.cc:
 764         Likewise.
 765         * testsuite/23_containers/list/pmr_typedefs.cc: Likewise.
 766         * testsuite/23_containers/map/pmr_typedefs.cc: Likewise.
 767         * testsuite/23_containers/multimap/pmr_typedefs.cc: Likewise.
 768         * testsuite/23_containers/multiset/pmr_typedefs.cc: Likewise.
 769         * testsuite/23_containers/set/pmr_typedefs.cc: Likewise.
 770         * testsuite/23_containers/unordered_map/pmr_typedefs.cc:
 771         Likewise.
 772         * testsuite/23_containers/unordered_multimap/pmr_typedefs.cc:
 773         Likewise.
 774         * testsuite/23_containers/unordered_multiset/pmr_typedefs.cc:
 775         Likewise.
 776         * testsuite/23_containers/unordered_set/pmr_typedefs.cc:
 777         Likewise.
 778         * testsuite/23_containers/vector/pmr_typedefs.cc: Likewise.
 779         * testsuite/28_regex/match_results/pmr_typedefs.cc: Likewise.
 780
 781 2022-05-19  Jonathan Wakely  <jwakely@redhat.com>
 782
 783         * include/std/memory_resource (polymorphic_allocator): Add
 784         non-template equality operator, as proposed for LWG 3683.
 785         * testsuite/20_util/polymorphic_allocator/lwg3683.cc: New test.
 786
 787 2022-05-17  Jonathan Wakely  <jwakely@redhat.com>
 788
 789         * src/c++17/memory_resource.cc (set_default_resource): Use
 790         memory_order_acq_rel.
 791         (get_default_resource): Use memory_order_acquire.
 792
 793 2022-05-17  Jonathan Wakely  <jwakely@redhat.com>
 794
 795         * include/std/memory_resource (new_delete_resource): Add
 796         nodiscard, returns_nonnull and const attributes.
 797         (null_memory_resource): Likewise.
 798         (set_default_resource, get_default_resource): Add returns_nonnull
 799         attribute.
 800         (memory_resource::is_equal): Add nodiscard attribute.
 801         (operator==, operator!=): Likewise.
 802
 803 2022-05-17  Jonathan Wakely  <jwakely@redhat.com>
 804
 805         * include/bits/ios_base.h (io_category): Add const and nodiscard
 806         attributes.
 807         (make_error_code, make_error_condition): Add nodiscard.
 808         * include/std/future (future_category): Add const and nodiscard.
 809         (make_error_code, make_error_condition): Add nodiscard.
 810         * include/std/system_error (generic_category system_category):
 811         Add nodiscard. Replace _GLIBCXX_CONST with C++11 attribute.
 812         (error_code::value, error_code::category, error_code::operator bool)
 813         (error_condition::value, error_condition::category)
 814         (error_condition::operator bool, make_error_code)
 815         (make_error_condition, operator==, operator!=, operator<=>): Add
 816         nodiscard.
 817
 818 2022-05-17  Jonathan Wakely  <jwakely@redhat.com>
 819
 820         * testsuite/20_util/expected/synopsis.cc: Skip for versioned
 821         namespace.
 822         * testsuite/27_io/headers/iosfwd/synopsis.cc: Likewise.
 823
 824 2022-05-17  Jonathan Wakely  <jwakely@redhat.com>
 825
 826         * src/Makefile.am [ENABLE_SYMVERS_GNU_NAMESPACE] (cxx11_sources):
 827         Do not build the compatibility*-c++0x.cc objects.
 828         * src/Makefile.in: Regenerate.
 829         * src/c++11/compatibility-c++0x.cc [_GLIBCXX_INLINE_VERSION]:
 830         Refuse to build for the versioned namespace.
 831         * src/c++11/compatibility-chrono.cc: Likewise.
 832         * src/c++11/compatibility-condvar.cc: Likewise.
 833         * src/c++11/compatibility-thread-c++0x.cc: Likewise.
 834         * src/c++11/chrono.cc (system_clock, steady_clock):
 835         Use macros to define in inline namespace _V2, matching the
 836         declarations in <system_error>.
 837         * src/c++11/system_error.cc (system_category, generic_category):
 838         Likewise.
 839
 840 2022-05-16  Jonathan Wakely  <jwakely@redhat.com>
 841
 842         * doc/xml/manual/prerequisites.xml: Fix attributes for external
 843         hyperlink.
 844         * doc/html/manual/setup.html: Regenerate.
 845
 846 2022-05-16  Jonathan Wakely  <jwakely@redhat.com>
 847
 848         * doc/xml/manual/status_cxx2023.xml: Update with gcc-12 support.
 849         * doc/html/*: Regenerate.
 850
 851 2022-05-16  Jonathan Wakely  <jwakely@redhat.com>
 852
 853         * doc/xml/manual/intro.xml: Include new chapter.
 854         * doc/xml/manual/status_cxx2020.xml: Tweak release numbers.
 855         * doc/xml/manual/status_cxx2023.xml: New file.
 856         * doc/html/*: Regenerate.
 857
 858 2022-05-16  Jonathan Wakely  <jwakely@redhat.com>
 859
 860         * doc/html/manual/status.html: Regenerate.
 861         * doc/xml/manual/status_cxx2020.xml: Fix supported version for
 862         C++20 bit operations.
 863
 864 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
 865
 866         * include/bits/std_thread.h (thread::_State, thread::_State_ptr):
 867         Declare as private unless _GLIBCXX_THREAD_IMPL is defined.
 868         * src/c++11/thread.cc (_GLIBCXX_THREAD_IMPL): Define.
 869
 870 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
 871
 872         * include/std/future (launch): Make operators noexcept.
 873
 874 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
 875
 876         * doc/doxygen/user.cfg.in (PREDEFINED): Replace __exception_ptr
 877         with "__unspecified__".
 878         * libsupc++/exception_ptr.h: Improve doxygen docs.
 879         (__exception_ptr::swap): Also declare in namespace std.
 880
 881 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
 882
 883         * libsupc++/nested_exception.h (throw_with_nested) [C++17]: Use
 884         if-constexpr instead of tag dispatching.
 885         (rethrow_if_nested) [C++17]: Likewise.
 886         (rethrow_if_nested) [!__cpp_rtti]: Do not use dynamic_cast if it
 887         would require RTTI.
 888         * testsuite/18_support/nested_exception/rethrow_if_nested-term.cc:
 889         New test.
 890
 891 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
 892
 893         * doc/doxygen/user.cfg.in (PREDEFINED): Define
 894         _GTHREAD_USE_MUTEX_TIMEDLOCK macro.
 895         * include/bits/std_mutex.h (mutex, lock_guard): Use @since and
 896         @headerfile.
 897         * include/bits/unique_lock.h (unique_lock): Likewise.
 898         * include/std/mutex (recursive_mutex, timed_mutex)
 899         (recursive_timed_mutex, scoped_lock): Likewise.
 900
 901 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
 902
 903         * doc/doxygen/user.cfg.in (PREDEFINED): Define
 904         _GLIBCXX23_CONSTEXPR macro.
 905         * include/backward/auto_ptr.h (auto_ptr): Use @deprecated.
 906         * include/bits/unique_ptr.h (default_delete): Use @since and
 907         @headerfile.
 908         * include/std/scoped_allocator: Remove @ingroup from @file
 909         block.
 910
 911 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
 912
 913         * include/bits/std_thread.h (thread, thread::id): Improve
 914         doxygen docs.
 915         * include/std/future: Likewise.
 916         * include/std/thread (jthread): Likewise.
 917
 918 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
 919
 920         * include/bits/ostream_insert.h: Mark helper functions as
 921         undocumented by Doxygen.
 922         * include/bits/stl_algo.h: Use markdown for formatting and mark
 923         helper functions as undocumented.
 924         * include/bits/stl_numeric.h:  Likewise.
 925         * include/bits/stl_pair.h (pair): Add @headerfile.
 926
 927 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
 928
 929         * doc/doxygen/user.cfg.in (PREDEFINED): Define __allocator_base
 930         so that Doxygen shows the right base-class for std::allocator.
 931         * include/bits/alloc_traits.h: Improve doxygen docs.
 932         * include/bits/allocator.h: Likewise.
 933         * include/bits/new_allocator.h: Likewise.
 934         * include/ext/new_allocator.h: Likewise.
 935
 936 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
 937
 938         * doc/doxygen/user.cfg.in (PREDEFINED): Define macro
 939         _GLIBCXX_DOXYGEN_ONLY to expand its argument.
 940         * include/bits/c++config (_GLIBCXX_DOXYGEN_ONLY): Define.
 941         * include/bits/regex.h: Improve doxygen docs.
 942         * include/bits/regex_constants.h: Likewise.
 943         * include/bits/regex_error.h: Likewise.
 944
 945 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
 946
 947         * include/std/atomic: Suppress doxygen docs for
 948         implementation details.
 949         * include/bits/atomic_base.h: Likewise.
 950         * include/bits/shared_ptr_atomic.h: Use markdown. Fix grouping
 951         so that std::atomic is not added to the pointer abstractions
 952         group.
 953
 954 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
 955
 956         * include/std/system_error: Improve doxygen comments.
 957
 958 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
 959
 960         * include/bits/ptr_traits.h: Add some doxygen comments.
 961
 962 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
 963
 964         * doc/doxygen/user.cfg.in (PREDEFINED): Expand new macros to
 965         nothing.
 966         * include/bits/c++config (_GLIBCXX_BEGIN_INLINE_ABI_NAMESPACE)
 967         (_GLIBCXX_END_INLINE_ABI_NAMESPACE): Define new macros.
 968         * include/bits/algorithmfwd.h (_V2::__rotate): Use new macros
 969         for the namespace.
 970         * include/bits/chrono.h (chrono::_V2::system_clock): Likewise.
 971         * include/bits/stl_algo.h (_V2::__rotate): Likewise.
 972         * include/std/condition_variable (_V2::condition_variable_any):
 973         Likewise.
 974         * include/std/system_error (_V2::error_category): Likewise.
 975
 976 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
 977
 978         * include/bits/mofunc_impl.h: Fix doxygen command.
 979
 980 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
 981
 982         * doc/doxygen/user.cfg.in (GROUP_NESTED_COMPOUNDS): Set to NO.
 983         (CLASS_DIAGRAMS): Remove obsolete option.
 984
 985 2022-05-12  Jonathan Wakely  <jwakely@redhat.com>
 986
 987         * config/locale/dragonfly/numeric_members.cc: Remove whitespace.
 988         * config/locale/gnu/numeric_members.cc: Likewise.
 989         * include/bits/locale_facets_nonio.h: Likewise.
 990         * libsupc++/typeinfo: Likewise.
 991
 992 2022-05-10  Jonathan Wakely  <jwakely@redhat.com>
 993
 994         PR libstdc++/105284
 995         * include/std/iosfwd: Add declarations for <spanstream> class
 996         templates and typedefs.
 997         * include/std/spanstream (basic_spanbuf, basic_ispanstream)
 998         (basic_ospanstream, basic_spanstream): Remove default template
 999         arguments.
1000         * testsuite/27_io/headers/iosfwd/synopsis.cc: Add <spanstream>
1001         declarations.
1002         * testsuite/27_io/headers/iosfwd/types.cc: Check <spanstream>
1003         default arguments.
1004
1005 2022-05-10  Jonathan Wakely  <jwakely@redhat.com>
1006
1007         PR libstdc++/105284
1008         * include/std/iosfwd: Add declarations for <synstream> class
1009         templates and typedefs.
1010         * include/std/syncstream (basic_syncbuf, basic_osyncstream):
1011         Remove default template arguments.
1012         * testsuite/27_io/headers/iosfwd/synopsis.cc: New test.
1013         * testsuite/27_io/headers/iosfwd/types.cc: New test.
1014
1015 2022-05-06  Jonathan Wakely  <jwakely@redhat.com>
1016
1017         * include/bits/random.tcc (operator==): Only check
1018         normal_distribution::_M_saved_available once.
1019         * testsuite/26_numerics/random/normal_distribution/operators/equal.cc:
1020         Check equality after state changes.
1021         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
1022         lineno.
1023
1024 2022-05-06  Jonathan Wakely  <jwakely@redhat.com>
1025
1026         PR libstdc++/105502
1027         * include/bits/random.tcc
1028         (operator>>(basic_istream<C,T>&, normal_distribution<R>&)):
1029         Update state when __state_avail is false.
1030         * testsuite/26_numerics/random/normal_distribution/operators/serialize.cc:
1031         Check that deserialized object equals serialized one.
1032
1033 2022-05-06  Alexandre Oliva  <oliva@adacore.com>
1034
1035         * include/experimental/bits/simd.h [__ALTIVEC__]: Require VSX
1036         for double, long long, and 64-bit long intrinsic types.
1037         [__ALTIVEC__] (__intrinsic_type): Mention 128-bit in
1038         preexisting long double diagnostic, adjust no-VSX double
1039         diagnostic to cover 64-bit long double as well.
1040
1041 2022-05-06  Jonathan Wakely  <jwakely@redhat.com>
1042
1043         PR libstdc++/104731
1044         * testsuite/27_io/filesystem/iterators/error_reporting.cc:
1045         Use a trailing char array as storage for dirent::d_name.
1046
1047 2022-05-06  Jonathan Wakely  <jwakely@redhat.com>
1048
1049         * include/std/stacktrace: Do not include <cxxabi.h>.
1050         (__cxa_demangle): Declare.
1051
1052 2022-05-06  Jonathan Wakely  <jwakely@redhat.com>
1053
1054         PR libstdc++/99871
1055         * include/bits/specfun.h: Use visibility attribute on namespace,
1056         instead of pragma push/pop.
1057         * libsupc++/compare: Likewise.
1058         * libsupc++/exception: Likewise.
1059         * libsupc++/exception.h: Likewise.
1060         * libsupc++/exception_ptr.h: Likewise.
1061         * libsupc++/initializer_list: Likewise.
1062         * libsupc++/nested_exception.h: Likewise.
1063
1064 2022-05-06  Jonathan Wakely  <jwakely@redhat.com>
1065
1066         * doc/xml/manual/test.xml: Remove requirement for copyright and
1067         GPL notice in tests.
1068         * doc/html/manual/test.html: Regenerate.
1069
1070 2022-05-05  Jonathan Wakely  <jwakely@redhat.com>
1071
1072         * include/experimental/memory_resource [!__cpp_rtti]
1073         (__resource_adaptor_imp::do_is_equal): Do not use dynamic_cast
1074         when RTTI is disabled.
1075         * testsuite/17_intro/freestanding.cc: Require RTTI.
1076         * testsuite/18_support/exception/38732.cc: Likewise.
1077         * testsuite/18_support/exception_ptr/rethrow_exception.cc:
1078         Likewise.
1079         * testsuite/18_support/nested_exception/68139.cc: Likewise.
1080         * testsuite/18_support/nested_exception/rethrow_if_nested.cc:
1081         Likewise.
1082         * testsuite/18_support/type_info/103240.cc: Likewise.
1083         * testsuite/18_support/type_info/fundamental.cc: Likewise.
1084         * testsuite/18_support/type_info/hash_code.cc: Likewise.
1085         * testsuite/20_util/any/assign/emplace.cc: Likewise.
1086         * testsuite/20_util/any/cons/in_place.cc: Likewise.
1087         * testsuite/20_util/any/misc/any_cast.cc: Likewise.
1088         * testsuite/20_util/any/observers/type.cc: Likewise.
1089         * testsuite/20_util/function/1.cc: Likewise.
1090         * testsuite/20_util/function/2.cc: Likewise.
1091         * testsuite/20_util/function/3.cc: Likewise.
1092         * testsuite/20_util/function/4.cc: Likewise.
1093         * testsuite/20_util/function/5.cc: Likewise.
1094         * testsuite/20_util/function/6.cc: Likewise.
1095         * testsuite/20_util/function/7.cc: Likewise.
1096         * testsuite/20_util/function/8.cc: Likewise.
1097         * testsuite/20_util/polymorphic_allocator/resource.cc: Likewise.
1098         * testsuite/20_util/shared_ptr/casts/1.cc: Likewise.
1099         * testsuite/20_util/shared_ptr/casts/rval.cc: Likewise.
1100         * testsuite/20_util/shared_ptr/cons/unique_ptr_deleter_ref_2.cc:
1101         Likewise.
1102         * testsuite/20_util/shared_ptr/misc/get_deleter.cc: Likewise.
1103         * testsuite/20_util/typeindex/comparison_operators.cc: Likewise.
1104         * testsuite/20_util/typeindex/comparison_operators_c++20.cc:
1105         Likewise.
1106         * testsuite/20_util/typeindex/hash.cc: Likewise.
1107         * testsuite/20_util/typeindex/hash_code.cc: Likewise.
1108         * testsuite/20_util/typeindex/name.cc: Likewise.
1109         * testsuite/22_locale/ctype/is/string/89728_neg.cc: Likewise.
1110         * testsuite/22_locale/global_templates/standard_facet_hierarchies.cc:
1111         Likewise.
1112         * testsuite/22_locale/global_templates/user_facet_hierarchies.cc:
1113         Likewise.
1114         * testsuite/22_locale/locale/13630.cc: Check type without using
1115         RTTI.
1116         * testsuite/23_containers/array/requirements/non_default_constructible.cc:
1117         Require RTTI.
1118         * testsuite/27_io/basic_ostream/emit/1.cc: Likewise.
1119         * testsuite/27_io/fpos/14320-1.cc: Check type without using RTTI.
1120         * testsuite/27_io/fpos/mbstate_t/12065.cc: Require RTTI.
1121         * testsuite/27_io/ios_base/failure/dual_abi.cc: Likewise.
1122         * testsuite/experimental/any/misc/any_cast.cc: Likewise.
1123         * testsuite/experimental/any/observers/type.cc: Likewise.
1124         * testsuite/experimental/memory_resource/resource_adaptor.cc:
1125         Likewise.
1126         * testsuite/lib/libstdc++.exp (check_effective_target_rtti):
1127         Define new proc.
1128         * testsuite/tr1/3_function_objects/function/1.cc: Likewise.
1129         * testsuite/tr1/3_function_objects/function/2.cc: Likewise.
1130         * testsuite/tr1/3_function_objects/function/3.cc: Likewise.
1131         * testsuite/tr1/3_function_objects/function/4.cc: Likewise.
1132         * testsuite/tr1/3_function_objects/function/5.cc: Likewise.
1133         * testsuite/tr1/3_function_objects/function/6.cc: Likewise.
1134         * testsuite/tr1/3_function_objects/function/7.cc: Likewise.
1135         * testsuite/tr1/3_function_objects/function/8.cc: Likewise.
1136         * testsuite/tr2/bases/value.cc: Likewise.
1137         * testsuite/tr2/direct_bases/value.cc: Likewise.
1138         * testsuite/util/exception/safety.h [!__cpp_rtti]: Don't print
1139         types without RTTI.
1140
1141 2022-05-04  Jonathan Wakely  <jwakely@redhat.com>
1142
1143         PR libstdc++/104719
1144         * include/std/array (array::size(), array::max_size())
1145         (array::empty(), array::data()): Add  always_inline attribute.
1146
1147 2022-05-04  Jonathan Wakely  <jwakely@redhat.com>
1148
1149         PR libstdc++/104719
1150         * include/std/array (__array_traits::_S_ref): Remove.
1151         (__array_traits::_S_ptr): Remove.
1152         (__array_traits<T, 0>::_Type): Define operator[] and operator T*
1153         to provide an array-like API.
1154         (array::_AT_Type): Remove public typeef.
1155         (array::operator[], array::at, array::front, array::back): Use
1156         index operator to access _M_elems instead of _S_ref.
1157         (array::data): Use implicit conversion from _M_elems to pointer.
1158         (swap(array&, array&)): Use __enable_if_t helper.
1159         (get<I>): Use index operator to access _M_elems.
1160         * testsuite/23_containers/array/tuple_interface/get_neg.cc:
1161         Adjust dg-error line numbers.
1162
1163 2022-05-03  Alexandre Oliva  <oliva@adacore.com>
1164
1165         PR c++/105324
1166         * testsuite/20_util/from_chars/pr105324.cc: Guard test body
1167         with conditional for floating-point overloads of from_char.
1168
1169 2022-05-02  Patrick Palka  <ppalka@redhat.com>
1170
1171         PR libstdc++/103911
1172         * src/c++17/floating_from_chars.cc (find_end_of_float): Accept
1173         two delimeters for the exponent part in the form of a possibly
1174         NULL string of length two.  Don't use std::tolower.
1175         (pattern): Adjust calls to find_end_of_float accordingly.
1176
1177 2022-05-02  Patrick Palka  <ppalka@redhat.com>
1178
1179         PR libstdc++/105441
1180         * src/c++17/floating_from_chars.cc (__floating_from_chars_hex):
1181         Also accept 'P' as the start of the exponent.
1182         * testsuite/20_util/from_chars/7.cc: Add corresponding testcase.
1183
1184 2022-04-29  Jonathan Wakely  <jwakely@redhat.com>
1185
1186         PR libstdc++/105417
1187         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt:
1188         Regenerate.
1189         * src/c++11/compatibility-ldbl-alt128.cc [_GLIBCXX_USE_DUAL_ABI]:
1190         Define __gnu_ieee128::num_get<C>::_M_extract_int[abi:cxx11]<I>
1191         symbols as aliases for corresponding symbols without abi-tag.
1192
1193 2022-04-29  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
1194
1195         * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
1196         * config/abi/post/i386-solaris/amd64/baseline_symbols.txt:
1197         Likewise.
1198         * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
1199         * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
1200         Likewise.
1201
1202 2022-04-28  Jonathan Wakely  <jwakely@redhat.com>
1203
1204         PR libstdc++/99290
1205         * src/c++17/fs_ops.cc (fs::copy): Pass error_code to
1206         directory_iterator constructor, and check on each iteration.
1207         * src/filesystem/ops.cc (fs::copy): Likewise.
1208         * testsuite/27_io/filesystem/operations/copy.cc: Check for
1209         errors during recursion.
1210         * testsuite/experimental/filesystem/operations/copy.cc:
1211         Likewise.
1212
1213 2022-04-28  François Dumont  <fdumont@gcc.gnu.org>
1214
1215         * config/abi/pre/gnu-versioned-namespace.ver: Remove
1216         std::random_device::* pattern.
1217
1218 2022-04-27  Jakub Jelinek  <jakub@redhat.com>
1219
1220         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
1221         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
1222         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
1223         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
1224         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
1225         * config/abi/post/powerpc-linux-gnu/baseline_symbols.txt: Update.
1226         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
1227         * config/abi/post/powerpc64-linux-gnu/32/baseline_symbols.txt: Update.
1228
1229 2022-04-27  Jonathan Wakely  <jwakely@redhat.com>
1230
1231         * python/libstdcxx/v6/printers.py (SharedPointerPrinter): Add
1232         support for atomic<shared_ptr<T>> and atomic<weak_ptr<T>>.
1233         (StdAtomicPrinter): New printer.
1234         (build_libstdcxx_dictionary): Register new printer.
1235         * testsuite/libstdc++-prettyprinters/cxx11.cc: Test std::atomic.
1236         * testsuite/libstdc++-prettyprinters/cxx20.cc: Test atomic smart
1237         pointers.
1238
1239 2022-04-26  Jonathan Wakely  <jwakely@redhat.com>
1240
1241         * include/bits/shared_ptr_atomic.h (atomic<shared_ptr>): Add
1242         constructor for constant initialization from nullptr_t.
1243         * testsuite/20_util/shared_ptr/atomic/atomic_shared_ptr.cc:
1244         Check for new constructor.
1245
1246 2022-04-26  Jonathan Wakely  <jwakely@redhat.com>
1247
1248         * include/bits/fs_path.h (hash<filesystem::path>): Define.
1249         * testsuite/27_io/filesystem/path/nonmember/hash_value.cc:
1250         Check std::hash specialization.
1251
1252 2022-04-25  Jonathan Wakely  <jwakely@redhat.com>
1253
1254         * include/bits/ptr_traits.h (__cpp_lib_constexpr_memory): Define
1255         conditionally.
1256         * include/bits/unique_ptr.h (__cpp_lib_constexpr_memory):
1257         Define for C++23.
1258         (default_delete, default_delete<T[]>, __uniq_ptr_impl)
1259         (unique_ptr, unique_ptr<T[], D>): Add constexpr to all member
1260         functions.
1261         * include/std/version (__cpp_lib_constexpr_memory): Define new
1262         value for C++23.
1263         * testsuite/20_util/unique_ptr/assign/constexpr.cc: New test.
1264         * testsuite/20_util/unique_ptr/comparison/constexpr.cc: New test.
1265         * testsuite/20_util/unique_ptr/cons/constexpr_c++20.cc: New test.
1266         * testsuite/20_util/unique_ptr/creation/constexpr.cc: New test.
1267         * testsuite/20_util/unique_ptr/modifiers/constexpr.cc: New test.
1268         * testsuite/20_util/unique_ptr/specialized_algorithms/constexpr.cc:
1269         New test.
1270
1271 2022-04-25  Jonathan Wakely  <jwakely@redhat.com>
1272
1273         PR libstdc++/105375
1274         * include/std/future (packaged_task): Add deduction guides.
1275         * testsuite/30_threads/packaged_task/cons/deduction.cc: New test.
1276
1277 2022-04-25  Philipp Fent  <fent@in.tum.de>
1278
1279         * python/libstdcxx/v6/printers.py (StdSpanPrinter._iterator):
1280         Rename as iterator.
1281         (StdInitializerListPrinter): Define new printer.
1282         (build_libstdcxx_dictionary): Register new printer.
1283         * testsuite/libstdc++-prettyprinters/cxx11.cc: Check printer for
1284         initializer_list.
1285
1286 2022-04-22  Thomas W Rodgers  <trodgers@redhat.com>
1287
1288         PR libstdc++/102994
1289         * include/bits/atomic_base.h (atomic_flag::notify_one,
1290         notify_all): Remove const qualification.
1291         (__atomic_base::notify_one, notify_all): Likewise.
1292         * include/std/atomic (atomic<bool>::notify_one, notify_all):
1293         Likewise.
1294         (atomic::notify_one, notify_all): Likewise.
1295         (atomic<T*>::notify_one, notify_all): Likewise.
1296         (atomic_notify_one, atomic_notify_all): Likewise.
1297         * testsuite/29_atomics/atomic/wait_notify/102994.cc: Adjust test
1298         to account for change in notify_one/notify_all signature.
1299
1300 2022-04-21  Patrick Palka  <ppalka@redhat.com>
1301
1302         * include/std/charconv (__from_chars_alnum_to_val_table):
1303         Simplify initialization of __lower/__upper_letters.
1304         (__from_chars_alnum_to_val): Default the template parameter to
1305         false.
1306         * src/c++17/floating_from_chars.cc (starts_with_ci): Don't
1307         assume the uppercase and lowercase letters are contiguous.
1308         (__floating_from_chars_hex): Likewise.
1309
1310 2022-04-21  Patrick Palka  <ppalka@redhat.com>
1311
1312         PR c++/105297
1313         PR c++/105322
1314         * include/std/charconv (__from_chars_alnum_to_val): Make
1315         initializer for __table dependent in an artificial way.
1316
1317 2022-04-21  Jonathan Wakely  <jwakely@redhat.com>
1318
1319         PR libstdc++/105324
1320         * src/c++17/floating_from_chars.cc (buffer_resource::do_allocate):
1321         Remove assertion.
1322         * testsuite/20_util/from_chars/pr105324.cc: New test.
1323
1324 2022-04-20  Jonathan Wakely  <jwakely@redhat.com>
1325
1326         * testsuite/21_strings/basic_string_view/operations/copy/char/constexpr.cc:
1327         Check correct feature test macro.
1328
1329 2022-04-20  Jonathan Wakely  <jwakely@redhat.com>
1330
1331         PR libstdc++/93602
1332         * doc/xml/manual/prerequisites.xml: Document libiconv
1333         workarounds.
1334         * doc/html/manual/setup.html: Regenerate.
1335         * src/Makefile.am (CXXLINK): Add $(LTLIBICONV).
1336         * src/Makefile.in: Regenerate.
1337
1338 2022-04-19  Patrick Palka  <ppalka@redhat.com>
1339
1340         * src/c++17/floating_to_chars.cc (_GLIBCXX_ASSERTIONS): Don't
1341         define.
1342         (__floating_to_chars_shortest): Add __builtin_unreachable calls to
1343         squelch false-positive -Wmaybe-uninitialized and -Wreturn-type
1344         warnings.
1345         (__floating_to_chars_precision): Likewise.
1346
1347 2022-04-19  Philipp Fent  <fent@in.tum.de>
1348
1349         * python/libstdcxx/v6/printers.py (StdSpanPrinter): Define.
1350         * testsuite/libstdc++-prettyprinters/cxx20.cc: Test it.
1351
1352 2022-04-19  Jonathan Wakely  <jwakely@redhat.com>
1353
1354         * acinclude.m4 (GLIBCXX_ENABLE_BACKTRACE): Fix shell operators.
1355         * configure: Regenerate.
1356
1357 2022-04-18  Patrick Palka  <ppalka@redhat.com>
1358
1359         * include/std/charconv (__from_chars_pow2_base): Manually
1360         unroll the first iteration of the main loop and simplify
1361         accordingly.
1362
1363 2022-04-15  Patrick Palka  <ppalka@redhat.com>
1364
1365         PR libstdc++/104858
1366         * include/bits/ranges_algo.h (__minmax_fn): Avoid dereferencing
1367         __first twice at the start.
1368         * testsuite/25_algorithms/minmax/constrained.cc (test06): New test.
1369
1370 2022-04-15  Patrick Palka  <ppalka@redhat.com>
1371
1372         * include/std/charconv (__from_chars_alnum_to_val_table): Define.
1373         (__from_chars_alnum_to_val): Define.
1374         (__from_chars_binary): Rename to ...
1375         (__from_chars_pow2_base): ... this.  Generalize to handle any
1376         power-of-two base using __from_chars_alnum_to_val.
1377         (__from_chars_digit): Optimize digit recognition to a single
1378         test instead of two tests.  Use [[__unlikely___]] attribute.
1379         (__from_chars_alpha_to_num): Remove.
1380         (__from_chars_alnum): Use __from_chars_alnum_to_val.  Use a
1381         nested loop for the overflow case.  Maintain a lower bound
1382         on the number of available bits in the result and use it to
1383         omit the overflow check.
1384         (from_chars): Adjust appropriately.
1385         * src/c++17/floating_from_chars.cc (ascii_to_hexit): Remove.
1386         (__floating_from_chars_hex): Use __from_chars_alnum_to_val
1387         to recognize a hex digit instead.
1388
1389 2022-04-14  Palmer Dabbelt  <palmer@rivosinc.com>
1390
1391         * acinclude.m4 (GLIBCXX_ENABLE_LOCK_POLICY): Force auto to mutex
1392         for RISC-V.
1393         * configure: Regenerate.
1394
1395 2022-04-14  Jonathan Wakely  <jwakely@redhat.com>
1396
1397         * doc/xml/manual/intro.xml: Fix comment.
1398
1399 2022-04-14  Jonathan Wakely  <jwakely@redhat.com>
1400
1401         * include/precompiled/stdc++.h: Include <stacktrace> and
1402         <stdatomic.h> for C++23.
1403
1404 2022-04-14  Jonathan Wakely  <jwakely@redhat.com>
1405
1406         PR libstdc++/105269
1407         * include/bits/stl_vector.h (__cpp_lib_constexpr_vector):
1408         Define.
1409         * include/c_compatibility/stdatomic.h (__cpp_lib_stdatomic_h):
1410         Define.
1411         * include/std/optional (__cpp_lib_optional): Define new value
1412         for C++23.
1413         (__cpp_lib_monadic_optional): Remove.
1414         * include/std/version (__cpp_lib_constexpr_vector): Define.
1415         (__cpp_lib_stdatomic_h): Define.
1416         (__cpp_lib_optional): Define new value for C++23.
1417         (__cpp_lib_monadic_optional): Remove.
1418         * testsuite/20_util/optional/monadic/and_then.cc: Adjust.
1419         * testsuite/20_util/optional/requirements.cc: Adjust for C++23.
1420         * testsuite/20_util/optional/version.cc: Likewise.
1421         * testsuite/23_containers/vector/cons/constexpr.cc: Check
1422         feature test macro.
1423         * testsuite/29_atomics/headers/stdatomic.h/c_compat.cc:
1424         Likewise.
1425         * testsuite/20_util/optional/monadic/version.cc: Removed.
1426         * testsuite/23_containers/vector/requirements/version.cc: New test.
1427         * testsuite/29_atomics/headers/stdatomic.h/version.cc: New test.
1428
1429 2022-04-12  Jonathan Wakely  <jwakely@redhat.com>
1430
1431         * acinclude.m4 (GLIBCXX_ENABLE_BACKTRACE): Check for mmap.
1432         * config.h.in: Regenerate.
1433         * configure: Regenerate.
1434
1435 2022-04-12  Jonathan Wakely  <jwakely@redhat.com>
1436
1437         * include/std/stacktrace (basic_stacktrace::current): Reallocate
1438         a smaller container if the unused capacity is larger than the
1439         used size.
1440
1441 2022-04-12  Jonathan Wakely  <jwakely@redhat.com>
1442
1443         * include/std/stacktrace (basic_stacktrace): Use _Impl::_M_clone
1444         or _Impl::_M_assign to initialize elements in allocated storage.
1445         (basic_stacktrace::_M_clear()): Use _Impl::_M_resize instead of
1446         _Impl::_M_destroy.
1447         (basic_stacktrace::_Impl::_M_destroy()): Replace with ...
1448         (basic_stacktrace::_Impl::_M_resize(size_type, allocator&)): New
1449         function.
1450         (basic_stacktrace::_Impl::_M_push_back): Use _M_xclone. Construct
1451         new element using allocator.
1452         (basic_stacktrace::_Impl::_M_clone): New function.
1453         (basic_stacktrace::_Impl::_M_xclone): New function.
1454         (basic_stacktrace::_Impl::_M_assign): New function.
1455
1456 2022-04-12  Jonathan Wakely  <jwakely@redhat.com>
1457
1458         * include/std/stacktrace (basic_stacktrace::_Impl::_M_allocate):
1459         Use nothrow new instead of try block for std::allocator.
1460         (basic_stacktrace::_Impl::_M_deallocate): Use delete for
1461         std::allocator.
1462
1463 2022-04-12  Jonathan Wakely  <jwakely@redhat.com>
1464
1465         * include/std/stacktrace (basic_stacktrace::current): Replace
1466         calls to _M_reserve and _S_curr_cb with call to _M_prepare.
1467         Check return value of backtrace_simple when max depth given.
1468         (basic_stacktrace::_M_reserve): Remove.
1469         (basic_stacktrace::_S_curr_cb): Remove.
1470         (basic_stacktrace::_M_prepare(size_type)): New function to
1471         reserve initial capacity and return callback.
1472         (basic_stacktrace::_Impl::_M_allocate): Remove check for 0 < n
1473         and remove redundant zeroing of _M_frames and _M_capacity.
1474         (basic_stacktrace::_Impl::_M_push_back): Add [[unlikely]]
1475         attribute. Assign _Impl instead of swapping.
1476         * testsuite/19_diagnostics/stacktrace/current.cc: New test.
1477
1478 2022-04-11  Jonathan Wakely  <jwakely@redhat.com>
1479
1480         * include/std/stacktrace (basic_stacktrace::_Impl::_M_allocate):
1481         Change [[unlikely]] attribute to [[likely]].
1482
1483 2022-04-11  Jonathan Wakely  <jwakely@redhat.com>
1484
1485         PR libstdc++/105031
1486         * include/std/stacktrace (basic_stacktrace::basic_stacktrace):
1487         Fix allocator usage in constructors.
1488         (basic_stacktrace::operator=(const basic_stacktrace&)): Do not
1489         try to reallocate using const allocator.
1490         (basic_stacktrace::operator=(basic_stacktrace&&)): Fix
1491         if-constexpr with non-constant condition. Do not allocate new
1492         storage if allocator propagates. Do not set _M_size if
1493         allocation fails.
1494         (basic_stacktrace::swap(basic_stacktrace&)): Fix typo. Add
1495         assertion that non-propagating allocators are equal.
1496         * testsuite/19_diagnostics/stacktrace/stacktrace.cc: New test.
1497
1498 2022-04-11  Jonathan Wakely  <jwakely@redhat.com>
1499
1500         * include/std/stacktrace (basic_stacktrace::current): Duplicate
1501         implementation into each overload. Add noinline attribute and
1502         skip current frame.
1503         (basic_stacktrace::max_size()): Call _Impl::_S_max_size.
1504         (basic_stacktrace::_S_curr_cb()): New function defining lambda.
1505         (basic_stacktrace::_Impl::_S_max_size): New function defining
1506         maximum size in terms of allocator and size_type.
1507         (basic_stacktrace::_Impl::_M_allocate): Check against
1508         max_size().
1509         * testsuite/19_diagnostics/stacktrace/entry.cc: Call function
1510         for non-constexpr checks. Check line number is correct.
1511
1512 2022-04-11  Jonathan Wakely  <jwakely@redhat.com>
1513
1514         * testsuite/20_util/stacktrace/entry.cc: Moved to...
1515         * testsuite/19_diagnostics/stacktrace/entry.cc: ...here.
1516         * testsuite/20_util/stacktrace/synopsis.cc: Moved to...
1517         * testsuite/19_diagnostics/stacktrace/synopsis.cc: ...here.
1518         * testsuite/20_util/stacktrace/version.cc: Moved to...
1519         * testsuite/19_diagnostics/stacktrace/version.cc: ...here.
1520
1521 2022-04-11  Jonathan Wakely  <jwakely@redhat.com>
1522
1523         * include/experimental/bits/fs_path.h (path): Define special
1524         members after path::_Cmpt is complete.
1525
1526 2022-04-08  Jonathan Wakely  <jwakely@redhat.com>
1527
1528         PR libstdc++/105153
1529         * include/std/expected
1530         (expected<void,E>::expected(expected<U,G>&&)): Fix constraints.
1531         * testsuite/20_util/expected/cons.cc: Check constructor.
1532
1533 2022-04-08  Jonathan Wakely  <jwakely@redhat.com>
1534
1535         PR libstdc++/105154
1536         * include/std/expected (expected<void, E>::swap): Set
1537         _M_has_value to false for objects that previously had a value.
1538         * testsuite/20_util/expected/swap.cc: Fix test to check void
1539         specialization.
1540
1541 2022-04-08  Jonathan Wakely  <jwakely@redhat.com>
1542
1543         PR libstdc++/105146
1544         * include/std/expected (bad_expected_access): Move constructor
1545         parameter.
1546         * testsuite/20_util/expected/bad.cc: New test.
1547
1548 2022-04-07  Hans-Peter Nilsson  <hp@axis.com>
1549
1550         * testsuite/20_util/expected/requirements.cc: Correct minimal-size
1551         test.
1552
1553 2022-04-02  Jakub Jelinek  <jakub@redhat.com>
1554
1555         PR libstdc++/105128
1556         * include/std/source_location (std::source_location::__impl): Move
1557         definition before using __builtin_ret_type.
1558
1559 2022-04-01  Jonathan Wakely  <jwakely@redhat.com>
1560
1561         * include/std/utility (unreachable): Define for C++23.
1562         * include/std/version (__cpp_lib_unreachable): Define.
1563         * src/c++11/debug.cc (__glibcxx_assert_fail): Check for valid
1564         arguments. Handle only the function being given.
1565         * testsuite/20_util/unreachable/1.cc: New test.
1566         * testsuite/20_util/unreachable/version.cc: New test.
1567
1568 2022-04-01  Jonathan Wakely  <jwakely@redhat.com>
1569
1570         * include/experimental/bits/fs_fwd.h (copy_file): Remove
1571         incorrect noexcept from declaration.
1572         * include/experimental/bits/fs_path.h (path::begin, path::end):
1573         Add noexcept to declarations, to match definitions.
1574
1575 2022-04-01  Timm Bäder  <tbaeder@redhat.com>
1576
1577         * include/bits/fs_ops.h: Fix filename in Doxygen comment.
1578         * include/experimental/bits/fs_ops.h: Likewise.
1579
1580 2022-03-31  Jonathan Wakely  <jwakely@redhat.com>
1581
1582         * libsupc++/new_opa.cc (aligned_alloc): Add comment.
1583
1584 2022-03-29  Jonathan Wakely  <jwakely@redhat.com>
1585
1586         * testsuite/18_support/exception/38732.cc: Disable for C++23.
1587         * testsuite/18_support/headers/exception/synopsis.cc: Likewise.
1588         * testsuite/18_support/unexpected_handler.cc: Likewise.
1589
1590 2022-03-29  Jonathan Wakely  <jwakely@redhat.com>
1591
1592         * libsupc++/compare (_Strong_order) [!__cpp_using_enum]: Add
1593         static data members for _Fp_fmt enumerators.
1594
1595 2022-03-29  Jonathan Wakely  <jwakely@redhat.com>
1596
1597         * include/std/version (__cpp_lib_variant): Fix conditions to
1598         match <variant>.
1599         (__cpp_lib_expected): Fix condition to match <expected>.
1600
1601 2022-03-28  Jonathan Wakely  <jwakely@redhat.com>
1602
1603         * testsuite/20_util/optional/monadic/and_then.cc: Fix typo.
1604         * testsuite/20_util/optional/monadic/transform.cc: Likewise.
1605         * testsuite/22_locale/codecvt/always_noconv/char/1.cc: Likewise.
1606         * testsuite/22_locale/codecvt/encoding/char/1.cc: Likewise.
1607         * testsuite/22_locale/codecvt/in/char/1.cc: Likewise.
1608         * testsuite/22_locale/codecvt/max_length/char/1.cc: Likewise.
1609         * testsuite/22_locale/codecvt/out/char/1.cc: Likewise.
1610         * testsuite/22_locale/codecvt/unshift/char/1.cc: Likewise.
1611
1612 2022-03-27  Jonathan Wakely  <jwakely@redhat.com>
1613
1614         * doc/doxygen/user.cfg.in: Add new header.
1615         * include/Makefile.am: Likewise.
1616         * include/Makefile.in: Regenerate.
1617         * include/precompiled/stdc++.h: Add new header.
1618         * include/std/version (__cpp_lib_expected): Define.
1619         * libsupc++/exception [__cplusplus > 202002] (unexpected)
1620         (unexpected_handler, set_unexpected): Do not declare for C++23.
1621         * include/std/expected: New file.
1622         * testsuite/20_util/expected/assign.cc: New test.
1623         * testsuite/20_util/expected/cons.cc: New test.
1624         * testsuite/20_util/expected/illformed_neg.cc: New test.
1625         * testsuite/20_util/expected/observers.cc: New test.
1626         * testsuite/20_util/expected/requirements.cc: New test.
1627         * testsuite/20_util/expected/swap.cc: New test.
1628         * testsuite/20_util/expected/synopsis.cc: New test.
1629         * testsuite/20_util/expected/unexpected.cc: New test.
1630         * testsuite/20_util/expected/version.cc: New test.
1631
1632 2022-03-25  Jonathan Wakely  <jwakely@redhat.com>
1633
1634         * include/std/bit (bit_cast, byteswap, endian): Add doxygen
1635         comments.
1636
1637 2022-03-23  Jonathan Wakely  <jwakely@redhat.com>
1638
1639         PR libstdc++/105027
1640         * include/std/bit (bit_cast): Add constraints.
1641         * testsuite/26_numerics/bit/bit.cast/105027.cc: New test.
1642
1643 2022-03-23  Jonathan Wakely  <jwakely@redhat.com>
1644
1645         * include/std/version [!_GLIBCXX_HOSTED]
1646         (__cpp_lib_hardware_interference_size): Define for freestanding.
1647         (__cpp_lib_bit_cast): Likewise.
1648         (__cpp_lib_is_layout_compatible): Likewise.
1649         (__cpp_lib_is_pointer_interconvertible): Likewise.
1650         (__cpp_lib_adaptor_iterator_pair_constructor): Do not define for
1651         freestanding.
1652         (__cpp_lib_invoke_r): Likewise.
1653         (__cpp_lib_ios_noreplace): Likewise.
1654         (__cpp_lib_monadic_optional): Likewise.
1655         (__cpp_lib_move_only_function): Likewise.
1656         (__cpp_lib_spanstream): Likewise.
1657         (__cpp_lib_stacktrace): Likewise.
1658         (__cpp_lib_string_contains): Likewise.
1659         (__cpp_lib_string_resize_and_overwrite): Likewise.
1660         (__cpp_lib_to_underlying): Likewise.
1661
1662 2022-03-23  Jonathan Wakely  <jwakely@redhat.com>
1663
1664         PR libstdc++/105021
1665         * include/bits/atomic_base.h [!_GLIBCXX_HOSTED]: Do not include
1666         <bits/atomic_wait.h> for freestanding.
1667
1668 2022-03-22  Hans-Peter Nilsson  <hp@axis.com>
1669
1670         * testsuite/20_util/from_chars/6.cc (test01) [FE_DOWNWARD]:
1671         Conditionalize call to fesetround.
1672
1673 2022-03-21  Jakub Jelinek  <jakub@redhat.com>
1674
1675         PR libstdc++/104990
1676         * include/bits/locale_facets_nonio.tcc (get): Don't check if do_get
1677         isn't overloaded if __clang__ is defined.
1678
1679 2022-03-18  Jonathan Wakely  <jwakely@redhat.com>
1680
1681         PR libstdc++/104242
1682         * include/std/any (any(T&&)): Revert change to constraints.
1683         * testsuite/20_util/any/cons/104242.cc: New test.
1684
1685 2022-03-18  Jonathan Wakely  <jwakely@redhat.com>
1686
1687         PR libstdc++/92546
1688         * include/pstl/glue_algorithm_defs.h: Replace <functional> with
1689         <bits/stl_pair.h>.
1690         * include/pstl/utils.h: Replace <iterator> with <type_traits>.
1691         (__pstl::__internal::__except_handler): Use std::__terminate
1692         instead of std::terminate.
1693         * src/c++17/fs_path.cc: Include <array>.
1694         * testsuite/25_algorithms/adjacent_find/constexpr.cc: Include
1695         <functional>.
1696         * testsuite/25_algorithms/binary_search/constexpr.cc: Likewise.
1697         * testsuite/25_algorithms/clamp/constrained.cc: Likewise.
1698         * testsuite/25_algorithms/equal/constrained.cc: Likewise.
1699         * testsuite/25_algorithms/for_each/constrained.cc: Likewise.
1700         * testsuite/25_algorithms/includes/constrained.cc: Likewise.
1701         * testsuite/25_algorithms/is_heap/constexpr.cc: Likewise.
1702         * testsuite/25_algorithms/is_heap_until/constexpr.cc: Likewise.
1703         * testsuite/25_algorithms/is_permutation/constrained.cc: Include
1704         <iterator>.
1705         * testsuite/25_algorithms/is_sorted/constexpr.cc: Include
1706         <functional>.
1707         * testsuite/25_algorithms/is_sorted_until/constexpr.cc:
1708         Likewise.
1709         * testsuite/25_algorithms/lexicographical_compare/constexpr.cc:
1710         Likewise.
1711         * testsuite/25_algorithms/lexicographical_compare/constrained.cc:
1712         Likewise.
1713         * testsuite/25_algorithms/lexicographical_compare_three_way/1.cc:
1714         Include <array>.
1715         * testsuite/25_algorithms/lower_bound/constexpr.cc: Include
1716         <functional>.
1717         * testsuite/25_algorithms/max/constrained.cc: Likewise.
1718         * testsuite/25_algorithms/max_element/constrained.cc: Likewise.
1719         * testsuite/25_algorithms/min/constrained.cc: Likewise.
1720         * testsuite/25_algorithms/min_element/constrained.cc: Likewise.
1721         * testsuite/25_algorithms/minmax_element/constrained.cc:
1722         Likewise.
1723         * testsuite/25_algorithms/mismatch/constexpr.cc: Likewise.
1724         * testsuite/25_algorithms/move/93872.cc: Likewise.
1725         * testsuite/25_algorithms/move_backward/93872.cc: Include
1726         <iterator>.
1727         * testsuite/25_algorithms/nth_element/constexpr.cc: Include
1728         <functional>.
1729         * testsuite/25_algorithms/partial_sort/constexpr.cc: Likewise.
1730         * testsuite/25_algorithms/partial_sort_copy/constexpr.cc:
1731         Likewise.
1732         * testsuite/25_algorithms/search/constexpr.cc: Likewise.
1733         * testsuite/25_algorithms/search_n/constrained.cc: Likewise.
1734         * testsuite/25_algorithms/set_difference/constexpr.cc: Likewise.
1735         * testsuite/25_algorithms/set_difference/constrained.cc:
1736         Likewise.
1737         * testsuite/25_algorithms/set_intersection/constexpr.cc:
1738         Likewise.
1739         * testsuite/25_algorithms/set_intersection/constrained.cc:
1740         Likewise.
1741         * testsuite/25_algorithms/set_symmetric_difference/constexpr.cc:
1742         Likewise.
1743         * testsuite/25_algorithms/set_union/constexpr.cc: Likewise.
1744         * testsuite/25_algorithms/set_union/constrained.cc: Likewise.
1745         * testsuite/25_algorithms/sort/constexpr.cc: Likewise.
1746         * testsuite/25_algorithms/sort_heap/constexpr.cc: Likewise.
1747         * testsuite/25_algorithms/transform/constrained.cc: Likewise.
1748         * testsuite/25_algorithms/unique/constexpr.cc: Likewise.
1749         * testsuite/25_algorithms/unique/constrained.cc: Likewise.
1750         * testsuite/25_algorithms/unique_copy/constexpr.cc: Likewise.
1751         * testsuite/25_algorithms/upper_bound/constexpr.cc: Likewise.
1752         * testsuite/std/ranges/adaptors/elements.cc: Include <vector>.
1753         * testsuite/std/ranges/adaptors/lazy_split.cc: Likewise.
1754         * testsuite/std/ranges/adaptors/split.cc: Likewise.
1755
1756 2022-03-17  Jonathan Wakely  <jwakely@redhat.com>
1757
1758         PR libstdc++/92546
1759         * include/bits/fs_path.h (path::make_preferred): Use
1760         handwritten loop instead of std::replace.
1761
1762 2022-03-17  Jonathan Wakely  <jwakely@redhat.com>
1763
1764         PR middle-end/104966
1765         * include/bits/locale_facets_nonio.tcc
1766         (__moneypunct_cache::_M_cache): Replace try-catch with RAII and
1767         make all string copies before any stores to *this.
1768
1769 2022-03-17  Jonathan Wakely  <jwakely@redhat.com>
1770
1771         * testsuite/util/testsuite_character.h: Fix comment.
1772
1773 2022-03-16  Jonathan Wakely  <jwakely@redhat.com>
1774
1775         PR libstdc++/103407
1776         * config/abi/pre/gnu.ver: Make version for std::from_chars
1777         depend on HAVE_USELOCALE macro.
1778         * testsuite/util/testsuite_abi.cc (compare_symbols): Treat
1779         std::from_chars for floating-point types as undesignated if
1780         not found in the baseline symbols file.
1781
1782 2022-03-16  Jonathan Wakely  <jwakely@redhat.com>
1783
1784         * include/std/charconv (__cpp_lib_to_chars): Only define when
1785         both from_chars and to_chars are supported for floating-point
1786         types.
1787         (from_chars, to_chars): Adjust preprocessor conditions guarding
1788         declarations.
1789         * include/std/version (__cpp_lib_to_chars): Adjust condition to
1790         match <charconv> definition.
1791         * src/c++17/floating_from_chars.cc (from_chars_strtod): New
1792         function template.
1793         (from_chars): Simplify preprocessor checks and use
1794         from_chars_strtod when appropriate.
1795
1796 2022-03-14  Jonathan Wakely  <jwakely@redhat.com>
1797
1798         PR libstdc++/104875
1799         * src/c++11/codecvt.cc (read_utf8_code_point): Use char32_t to
1800         hold octets that will be left-shifted.
1801
1802 2022-03-10  Jonathan Wakely  <jwakely@redhat.com>
1803
1804         PR libstdc++/104870
1805         * src/c++17/floating_from_chars.cc: Check __SIZE_WIDTH__ >= 32
1806         before using fast_float.
1807
1808 2022-03-10  Detlef Vollmann  <dv@vollmann.ch>
1809
1810         PR libstdc++/104866
1811         * include/bits/this_thread_sleep.h: Fix order of #endif and
1812         closing brace of namespace.
1813
1814 2022-03-10  Jonathan Wakely  <jwakely@redhat.com>
1815
1816         * libsupc++/compare (_Strong_order::_S_fp_cmp) [__vax__]:
1817         Handle NaN.
1818
1819 2022-03-10  Jonathan Wakely  <jwakely@redhat.com>
1820
1821         * libsupc++/compare (_Strong_ordering::_S_fp_cmp) [__vax__]: Use
1822         <=> comparison.
1823
1824 2022-03-09  Patrick Palka  <ppalka@redhat.com>
1825
1826         PR libstdc++/104859
1827         * src/c++17/floating_to_chars.cc (__floating_to_chars_hex):
1828         Be explicit when narrowing the shifted effective_mantissa,
1829         since it may have an integer-class type.
1830
1831 2022-03-08  Jonathan Wakely  <jwakely@redhat.com>
1832
1833         * include/bits/uses_allocator_args.h: Remove incorrect copyright
1834         notice.
1835
1836 2022-03-07  Jonathan Wakely  <jwakely@redhat.com>
1837
1838         PR libstdc++/104807
1839         * include/bits/c++config (__terminate, __glibcxx_assert_fail):
1840         Replace _GLIBCXX_VISIBILITY on function with visibility pragma.
1841         (__is_constant_evaluated): Add visibility pragma.
1842
1843 2022-03-07  Rasmus Villemoes  <rasmus.villemoes@prevas.dk>
1844
1845         * config/locale/vxworks/ctype_members.cc: Remove <iostream>
1846           include.
1847
1848 2022-03-05  Jonathan Wakely  <jwakely@redhat.com>
1849
1850         * include/bits/c++config (__glibcxx_assert_fail): Add visibility
1851         attribute.
1852         (__terminate): Likewise.
1853
1854 2022-03-04  Jonathan Wakely  <jwakely@redhat.com>
1855
1856         * libsupc++/compare (strong_order::_S_fp_cmp): Move typedef
1857         inside #if condition.
1858
1859 2022-03-03  Jonathan Wakely  <jwakely@redhat.com>
1860
1861         PR libstdc++/104748
1862         * testsuite/std/ranges/adaptors/all.cc: Use non-debug vector for
1863         constexpr test.
1864
1865 2022-03-03  Jonathan Wakely  <jwakely@redhat.com>
1866
1867         * testsuite/17_intro/names.cc (func): Undef on AIX.
1868
1869 2022-03-03  Jonathan Wakely  <jwakely@redhat.com>
1870
1871         PR libstdc++/96526
1872         * libsupc++/compare (strong_order): Add missing support for
1873         floating-point types.
1874         * testsuite/18_support/comparisons/algorithms/strong_order_floats.cc:
1875         New test.
1876
1877 2022-03-01  Jonathan Wakely  <jwakely@redhat.com>
1878
1879         PR middle-end/103984
1880         * include/bits/regex_compiler.h (_BracketMatcher::_M_char): Use
1881         default member initializer.
1882
1883 2022-02-24  Jonathan Wakely  <jwakely@redhat.com>
1884
1885         PR libstdc++/104602
1886         * include/std/source_location (source_location::current): Use
1887         deduced type of __builtin_source_location().
1888
1889 2022-02-22  Patrick Palka  <ppalka@redhat.com>
1890
1891         * include/bits/ranges_base.h (__detail::__is_initializer_list):
1892         Define.
1893         (viewable_range): Adjust as per P2415R2.
1894         * include/bits/ranges_cmp.h (__cpp_lib_ranges): Adjust value.
1895         * include/std/ranges (owning_view): Define as per P2415R2.
1896         (enable_borrowed_range<owning_view>): Likewise.
1897         (views::__detail::__can_subrange): Replace with ...
1898         (views::__detail::__can_owning_view): ... this.
1899         (views::_All::_S_noexcept): Sync with operator().
1900         (views::_All::operator()): Use owning_view instead of subrange
1901         as per P2415R2.
1902         * include/std/version (__cpp_lib_ranges): Adjust value.
1903         * testsuite/std/ranges/adaptors/all.cc (test06): Adjust now that
1904         views::all uses owning_view instead of subrange.
1905         (test08): New test.
1906         * testsuite/std/ranges/adaptors/lazy_split.cc (test09): Adjust
1907         now that rvalue non-view non-borrowed ranges are viewable.
1908         * testsuite/std/ranges/adaptors/split.cc (test06): Likewise.
1909
1910 2022-02-17  Jonathan Wakely  <jwakely@redhat.com>
1911
1912         PR libstdc++/104559
1913         * doc/xml/manual/evolution.xml: Document deprecation.
1914         * doc/html/manual/api.html: Regenerate.
1915         * include/bits/stl_bvector.h (insert(const_iterator, const bool&)):
1916         Remove default argument.
1917         (insert(const_iterator)): New overload with deprecated attribute.
1918         * testsuite/23_containers/vector/bool/modifiers/insert/104559.cc:
1919         New test.
1920
1921 2022-02-17  Jonathan Wakely  <jwakely@redhat.com>
1922
1923         * python/libstdcxx/v6/printers.py (StdErrorCodePrinter): Replace
1924         code that call cat->name() on std::error_category objects.
1925         Identify known categories by symbol name and use a hardcoded
1926         name. Print error code values as enumerators where appopriate.
1927         * testsuite/libstdc++-prettyprinters/cxx11.cc: Adjust expected
1928         name of custom category. Check io_errc and future_errc errors.
1929
1930 2022-02-15  Jonathan Wakely  <jwakely@redhat.com>
1931
1932         PR libstdc++/104542
1933         * include/bits/uses_allocator_args.h (make_obj_using_allocator)
1934         (uninitialized_construct_using_allocator): Add constexpr.
1935         * testsuite/20_util/uses_allocator/make_obj.cc: Check constexpr.
1936         * testsuite/20_util/uses_allocator/uninitialized_construct.cc: New test.
1937
1938 2022-02-14  Jonathan Wakely  <jwakely@redhat.com>
1939
1940         PR libstdc++/100912
1941         * config/locale/gnu/c_locale.h (__convert_from_v): Use inline
1942         namespace for IEEE128 long double mode.
1943         * config/os/gnu-linux/ldbl-ieee128-extra.ver: Add new symbol
1944         version and export __gnu_cxx_ieee128::__convert_from_v.
1945         * include/bits/locale_facets_nonio.tcc (money_put::__do_put):
1946         Make __ibm128 overload use snprintf directly
1947         * testsuite/util/testsuite_abi.cc: Add new symbol version.
1948         Remove stable IEEE128/LDBL versions.
1949
1950 2022-02-14  Jonathan Wakely  <jwakely@redhat.com>
1951
1952         PR libstdc++/103891
1953         * include/bits/c++config (_GLIBCXX_HAVE_COND_TRIVIAL_SPECIAL_MEMBERS):
1954         Remove.
1955         * include/std/variant: Check feature test macros instead.
1956         * include/std/version: Likewise.
1957
1958 2022-02-14  Jonathan Wakely  <jwakely@redhat.com>
1959
1960         * testsuite/20_util/unsynchronized_pool_resource/allocate.cc:
1961         Fix typo.
1962
1963 2022-02-14  Jonathan Wakely  <jwakely@redhat.com>
1964
1965         * src/c++17/floating_to_chars.cc (FLOAT128_TO_CHARS): Depend on
1966         LONG_DOUBLE_ALT128_COMPAT instead of USE_FLOAT128.
1967
1968 2022-02-11  Jonathan Wakely  <jwakely@redhat.com>
1969
1970         * testsuite/20_util/temporary_buffer.cc: Fix dg-warning target
1971         selector.
1972
1973 2022-02-11  Jonathan Wakely  <jwakely@redhat.com>
1974
1975         * testsuite/20_util/monotonic_buffer_resource/allocate.cc:
1976         Ignore -Walloc-larger-than warning.
1977         * testsuite/20_util/unsynchronized_pool_resource/allocate.cc:
1978         Likewise.
1979         * testsuite/29_atomics/atomic/cons/user_pod.cc: Compile with -O1
1980         to avoid linker error for __atomic_is_lock_free.
1981
1982 2022-02-10  Thomas Rodgers  <rodgert@appliantology.com>
1983
1984         * include/bits/atomic_wait.h (__waiter_base::_S_do_spin,
1985         __waiter_base::_S_do_spin_v): Change memory order from relaxed
1986         to acquire.
1987
1988 2022-02-10  Jonathan Wakely  <jwakely@redhat.com>
1989
1990         * include/c_compatibility/stdatomic.h (atomic_fetch_xor): Add
1991         using-declaration.
1992         (atomic_fetch_xor_explicit): Likewise.
1993         * testsuite/29_atomics/headers/stdatomic.h/c_compat.cc: Check
1994         arithmetic and logical operations for atomic_int.
1995
1996 2022-02-10  Jonathan Wakely  <jwakely@redhat.com>
1997
1998         * src/filesystem/dir-common.h (_GLIBCXX_HAVE_DIRFD): Undefine
1999         when <dirent.h> is not available.
2000         (_GLIBCXX_HAVE_UNLINKAT):  Likewise.
2001
2002 2022-02-09  Thomas Rodgers  <rodgert@appliantology.com>
2003
2004         PR libstdc++/104442
2005         * include/bits/atomic_wait.h (__waiter::_M_do_wait_v): Move spin
2006          loop inside do loop so that threads failing the wait, reload
2007          _M_ver.
2008
2009 2022-02-08  Jonathan Wakely  <jwakely@redhat.com>
2010
2011         * src/c++17/fs_dir.cc (_Dir(DIR*, const path&)): Change first
2012         parameter to _Dir_base&&.
2013         * src/filesystem/dir-common.h (_Dir_base(DIR*)): Remove.
2014         * src/filesystem/dir.cc (_Dir(DIR*, const path&)): Change first
2015         parameter to _Dir_base&&.
2016
2017 2022-02-08  Jonathan Wakely  <jwakely@redhat.com>
2018
2019         * acinclude.m4 (GLIBCXX_ENABLE_LOCK_POLICY): Add comment about
2020         checking for CAS on correct word size.
2021
2022 2022-02-08  Jonathan Wakely  <jwakely@redhat.com>
2023
2024         * testsuite/experimental/filesystem/operations/create_directories.cc:
2025         Adjust expected results for Windows.
2026
2027 2022-02-08  Jonathan Wakely  <jwakely@redhat.com>
2028
2029         PR libstdc++/104161
2030         * src/c++17/fs_dir.cc (fs::recursive_directory_iterator::__erase):
2031         [i_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Refresh entry._M_type member,
2032         instead of checking for errno values indicating a directory.
2033         * src/c++17/fs_ops.cc (fs::remove_all(const path&)): Use similar
2034         logic to non-throwing overload.
2035         (fs::remove_all(const path&, error_code&)): Add comments.
2036         * src/filesystem/ops-common.h: Likewise.
2037
2038 2022-02-04  Jonathan Wakely  <jwakely@redhat.com>
2039
2040         * src/filesystem/dir-common.h (_Dir_base::openat): Change return
2041         type to use portable posix::DIR alias.
2042
2043 2022-02-04  Jonathan Wakely  <jwakely@redhat.com>
2044
2045         * include/c_compatibility/stdatomic.h [__clang__]: Use
2046         #include_next <stdatomic.h>.
2047
2048 2022-02-04  Jonathan Wakely  <jwakely@redhat.com>
2049
2050         * include/experimental/bits/fs_ops.h (fs::copy_file): Remove
2051         noexcept.
2052         (fs::create_directories): Likewise.
2053         (fs::remove_all): Likewise.
2054         * src/filesystem/ops.cc (fs::copy_file): Remove noexcept.
2055         (fs::create_directories): Likewise.
2056         (fs::remove_all): Likewise.
2057
2058 2022-02-04  Jonathan Wakely  <jwakely@redhat.com>
2059
2060         PR libstdc++/104161
2061         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for dirfd
2062         and unlinkat.
2063         * config.h.in: Regenerate.
2064         * configure: Regenerate.
2065         * include/bits/fs_dir.h (recursive_directory_iterator): Declare
2066         remove_all overloads as friends.
2067         (recursive_directory_iterator::__erase): Declare new member
2068         function.
2069         * include/bits/fs_fwd.h (remove, remove_all): Declare.
2070         * src/c++17/fs_dir.cc (_Dir): Add filename_only parameter to
2071         constructor. Pass file descriptor argument to base constructor.
2072         (_Dir::dir_and_pathname, _Dir::open_subdir, _Dir::do_unlink)
2073         (_Dir::unlink, _Dir::rmdir): Define new member functions.
2074         (directory_iterator): Pass filename_only argument to _Dir
2075         constructor.
2076         (recursive_directory_iterator::_Dir_stack): Adjust constructor
2077         parameters to take a _Dir rvalue instead of creating one.
2078         (_Dir_stack::orig): Add data member for storing original path.
2079         (_Dir_stack::report_error): Define new member function.
2080         (__directory_iterator_nofollow): Move here from dir-common.h and
2081         fix value to be a power of two.
2082         (__directory_iterator_filename_only): Define new constant.
2083         (recursive_directory_iterator): Construct _Dir object and move
2084         into _M_dirs stack. Pass skip_permission_denied argument to first
2085         advance call.
2086         (recursive_directory_iterator::increment): Use _Dir::open_subdir.
2087         (recursive_directory_iterator::__erase): Define new member
2088         function.
2089         * src/c++17/fs_ops.cc (ErrorReporter, do_remove_all): Remove.
2090         (fs::remove_all): Use new recursive_directory_iterator::__erase
2091         member function.
2092         * src/filesystem/dir-common.h (_Dir_base): Add int parameter to
2093         constructor and use openat to implement nofollow semantics.
2094         (_Dir_base::fdcwd, _Dir_base::set_close_on_exec, _Dir_base::openat):
2095         Define new member functions.
2096         (__directory_iterator_nofollow): Move to fs_dir.cc.
2097         * src/filesystem/dir.cc (_Dir): Pass file descriptor argument to
2098         base constructor.
2099         (_Dir::dir_and_pathname, _Dir::open_subdir): Define new member
2100         functions.
2101         (recursive_directory_iterator::_Dir_stack): Adjust constructor
2102         parameters to take a _Dir rvalue instead of creating one.
2103         (recursive_directory_iterator): Check for new nofollow option.
2104         Construct _Dir object and move into _M_dirs stack. Pass
2105         skip_permission_denied argument to first advance call.
2106         (recursive_directory_iterator::increment): Use _Dir::open_subdir.
2107         * src/filesystem/ops.cc (fs::remove_all): Use C++17 remove_all.
2108
2109 2022-02-04  Jonathan Wakely  <jwakely@redhat.com>
2110
2111         * include/bits/allocator.h: Qualify std::allocator_traits in
2112         deprecated warnings.
2113         * libsupc++/exception (uncaught_exception): Add suggestion to
2114         deprecated warning.
2115
2116 2022-02-02  Jonathan Wakely  <jwakely@redhat.com>
2117
2118         * src/c++17/fs_dir.cc (fs::recursive_directory_iterator::pop):
2119         Add [[maybe_unused]] attribute.
2120         * src/filesystem/dir.cc (fs::recursive_directory_iterator::pop):
2121         Likewise.
2122
2123 2022-02-02  Jonathan Wakely  <jwakely@redhat.com>
2124
2125         * testsuite/23_containers/multiset/operators/cmp_c++20.cc: Use
2126         custom comparison function for multiset.
2127         * testsuite/23_containers/set/operators/cmp_c++20.cc: Use custom
2128         comparison function for set.
2129
2130 2022-02-02  Jonathan Wakely  <jwakely@redhat.com>
2131
2132         * include/bits/boost_concept_check.h (_OutputIteratorConcept):
2133         Change member function to data member of function pointer type.
2134
2135 2022-02-02  Martin Sebor  <msebor@redhat.com>
2136
2137         PR libstdc++/101831
2138         * include/std/array (begin): Declare const member function attribute
2139         const.
2140         (end, rbegin, rend, size, max_size, empty, data): Same.
2141         * testsuite/23_containers/array/capacity/empty.cc: Add test cases.
2142         * testsuite/23_containers/array/capacity/max_size.cc: Same.
2143         * testsuite/23_containers/array/capacity/size.cc: Same.
2144         * testsuite/23_containers/array/iterators/begin_end.cc: New test.
2145
2146 2022-02-02  Jonathan Wakely  <jwakely@redhat.com>
2147
2148         * testsuite/27_io/filesystem/iterators/error_reporting.cc: Use
2149         autoconf macro to check whether d_type is present.
2150         * testsuite/experimental/filesystem/iterators/error_reporting.cc:
2151         Likewise.
2152
2153 2022-02-01  Jonathan Wakely  <jwakely@redhat.com>
2154
2155         * testsuite/27_io/filesystem/iterators/97731.cc: New test.
2156         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
2157         Check follow_directory_symlink option.
2158         * testsuite/experimental/filesystem/iterators/recursive_directory_iterator.cc:
2159         Likewise.
2160
2161 2022-02-01  Jonathan Wakely  <jwakely@redhat.com>
2162
2163         * src/c++17/fs_dir.cc (recursive_directory_iterator::increment):
2164         Reset state to past-the-end iterator on error.
2165         (fs::recursive_directory_iterator::pop(error_code&)): Likewise.
2166         (fs::recursive_directory_iterator::pop()): Check _M_dirs before
2167         it might get reset.
2168         * src/filesystem/dir.cc (recursive_directory_iterator): Likewise,
2169         for the TS implementation.
2170         * testsuite/27_io/filesystem/iterators/error_reporting.cc: New test.
2171         * testsuite/experimental/filesystem/iterators/error_reporting.cc: New test.
2172
2173 2022-02-01  Jonathan Wakely  <jwakely@redhat.com>
2174
2175         * include/bits/fs_fwd.h (filesystem::perms): Fix comment.
2176
2177 2022-02-01  Jonathan Wakely  <jwakely@redhat.com>
2178
2179         PR libstdc++/104301
2180         * acinclude.m4 (GLIBCXX_ENABLE_CSTDIO): Print different messages
2181         for stdio_pure and stdio_posix options.
2182         * configure: Regenerate.
2183
2184 2022-02-01  Thomas Rodgers  <rodgert@appliantology.com>
2185
2186         * include/bits/atomic_wait.h: Change memory order from
2187         Acquire/Release with relaxed loads to SeqCst+Release for
2188         accesses to the waiter's count.
2189
2190 2022-01-31  Martin Liska  <mliska@suse.cz>
2191
2192         * acinclude.m4: Detect *_ld_is_mold and use it.
2193         * configure: Regenerate.
2194
2195 2022-01-30  Hans-Peter Nilsson  <hp@axis.com>
2196
2197         * testsuite/27_io/basic_istream/get/char/lwg3464.cc: Don't run on
2198         simulator targets.
2199         * testsuite/27_io/basic_istream/get/wchar_t/lwg3464.cc: Likewise.
2200
2201 2022-01-27  Jonathan Wakely  <jwakely@redhat.com>
2202
2203         PR libstdc++/100516
2204         * include/bits/deque.tcc (_M_range_initialize<ForwardIterator>):
2205         Add __builtin_unreachable to loop.
2206         * testsuite/23_containers/deque/100516.cc: New test.
2207
2208 2022-01-27  Jonathan Wakely  <jwakely@redhat.com>
2209
2210         * include/bits/ranges_base.h (ranges::advance): Avoid signed
2211         overflow. Do nothing if already equal to desired result.
2212         * testsuite/24_iterators/range_operations/advance_overflow.cc:
2213         New test.
2214
2215 2022-01-27  Martin Liska  <mliska@suse.cz>
2216
2217         PR libstdc++/104259
2218         * acinclude.m4: Fix typo.
2219         * configure: Regenerate.
2220
2221 2022-01-25  Jonathan Wakely  <jwakely@redhat.com>
2222
2223         PR libstdc++/104019
2224         * include/bits/istream.tcc (basic_istream::sentry): Add braces
2225         around try-block.
2226         * include/bits/shared_ptr_base.h (_Sp_counted_array_base::_M_init):
2227         Add pragmas to disable bogus warnings from PR 61596.
2228
2229 2022-01-25  Jonathan Wakely  <jwakely@redhat.com>
2230
2231         PR libstdc++/104217
2232         * src/c++17/fs_ops.cc (_GNU_SOURCE): Define.
2233         * src/filesystem/dir.cc (_GNU_SOURCE): Define.
2234         * src/filesystem/ops.cc (_GNU_SOURCE): Define.
2235
2236 2022-01-25  Jonathan Wakely  <jwakely@redhat.com>
2237
2238         PR libstdc++/104161
2239         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for
2240         fdopendir.
2241         * config.h.in: Regenerate.
2242         * configure: Regenerate.
2243         * src/c++17/fs_dir.cc (_Dir): Add nofollow flag to constructor
2244         and pass it to base class constructor.
2245         (directory_iterator): Pass nofollow flag to _Dir constructor.
2246         (fs::recursive_directory_iterator::increment): Likewise.
2247         * src/c++17/fs_ops.cc (do_remove_all): Use nofollow option for
2248         directory_iterator constructor. Move error check outside loop.
2249         * src/filesystem/dir-common.h (_Dir_base): Add nofollow flag to
2250         constructor and when it's set use ::open with O_NOFOLLOW and
2251         O_DIRECTORY.
2252         * src/filesystem/dir.cc (_Dir): Add nofollow flag to constructor
2253         and pass it to base class constructor.
2254         (directory_iterator): Pass nofollow flag to _Dir constructor.
2255         (fs::recursive_directory_iterator::increment): Likewise.
2256         * src/filesystem/ops.cc (remove_all): Use nofollow option for
2257         directory_iterator constructor. Move error check outside loop.
2258
2259 2022-01-23  Jonathan Wakely  <jwakely@redhat.com>
2260
2261         PR libstdc++/104032
2262         * include/std/spanstream (basic_spanbuf(basic_spanbuf&&)): Use
2263         mem-initializer for _M_buf.
2264         (basic_spanbuf::Operator=(basic_spanbuf&&)): Fix ill-formed
2265         member access.
2266         * testsuite/27_io/spanstream/2.cc: New test.
2267
2268 2022-01-23  Jonathan Wakely  <jwakely@redhat.com>
2269
2270         * src/c++17/floating_from_chars.cc (USE_STRTOD_FOR_FROM_CHARS):
2271         Define macro for case where std::from_chars is implemented in
2272         terms of strtod, strtof or strtold.
2273         (buffer_resource, valid_fmt, find_end_of_float, pattern)
2274         (from_chars_impl, make_result, reserve_string): Do not define
2275         unless USE_STRTOD_FOR_FROM_CHARS is defined.
2276         (from_chars): Define when at least one of USE_LIB_FAST_FLOAT and
2277         USE_STRTOD_FOR_FROM_CHARS is defined, instead of
2278         _GLIBCXX_HAVE_USELOCALE. Use fast_float for long double when it
2279         is binary64.
2280
2281 2022-01-23  Jonathan Wakely  <jwakely@redhat.com>
2282
2283         PR libstdc++/104174
2284         * include/bits/hashtable_policy.h (_Map_base): Add partial
2285         specialization for maps with const key types.
2286         * testsuite/23_containers/unordered_map/104174.cc: New test.
2287
2288 2022-01-23  Jonathan Wakely  <jwakely@redhat.com>
2289
2290         PR libstdc++/104019
2291         * include/bits/shared_ptr_base.h (_Sp_counted_base<>::_M_release):
2292         Set members to zero without type punning.
2293
2294 2022-01-21  Jonathan Wakely  <jwakely@redhat.com>
2295
2296         * testsuite/20_util/shared_ptr/cons/array.cc: Fix comment.
2297
2298 2022-01-21  Jonathan Wakely  <jwakely@redhat.com>
2299
2300         PR libstdc++/87193
2301         PR libstdc++/104019
2302         * include/bits/alloc_traits.h (__cpp_lib_allocator_traits_is_always_equal):
2303         Define as type long.
2304         * include/bits/allocator.h (__cpp_lib_incomplete_container_elements):
2305         Likewise.
2306         * include/bits/basic_string.h (__cpp_lib_string_udls): Likewise.
2307         * include/bits/chrono.h (__cpp_lib_chrono): Likewise.
2308         (__cpp_lib_chrono_udls): Likewise.
2309         * include/bits/move.h (__cpp_lib_addressof_constexpr): Likewise.
2310         * include/bits/node_handle.h (__cpp_lib_node_extract): Likewise.
2311         * include/bits/range_access.h (__cpp_lib_nonmember_container_access):
2312         Likewise.
2313         * include/bits/shared_ptr.h (__cpp_lib_enable_shared_from_this):
2314         Likewise.
2315         * include/bits/stl_algo.h (__cpp_lib_clamp): Likewise.
2316         (__cpp_lib_sample): Likewise.
2317         * include/bits/stl_algobase.h (__cpp_lib_robust_nonmodifying_seq_ops):
2318         Likewise.
2319         * include/bits/stl_function.h (__cpp_lib_transparent_operators):
2320         Likewise.
2321         * include/bits/stl_iterator.h (__cpp_lib_make_reverse_iterator):
2322         Likewise.
2323         * include/bits/stl_map.h (__cpp_lib_map_try_emplace):
2324         Likewise.
2325         * include/bits/stl_tree.h (__cpp_lib_generic_associative_lookup):
2326         Likewise.
2327         * include/bits/unique_ptr.h (__cpp_lib_make_unique):
2328         Likewise.
2329         * include/bits/unordered_map.h (__cpp_lib_unordered_map_try_emplace):
2330         Likewise.
2331         * include/c_global/cmath (__cpp_lib_hypot): Likewise.
2332         * include/c_global/cstddef (__cpp_lib_byte): Likewise.
2333         * include/std/atomic (__cpp_lib_atomic_is_always_lock_free):
2334         Likewise.
2335         * include/std/complex (__cpp_lib_complex_udls): Likewise.
2336         * include/std/filesystem (__cpp_lib_filesystem): Likewise.
2337         * include/std/functional (__cpp_lib_not_fn): Likewise.
2338         (__cpp_lib_boyer_moore_searcher): Likewise.
2339         * include/std/iomanip (__cpp_lib_quoted_string_io): Likewise.
2340         * include/std/mutex (__cpp_lib_scoped_lock): Likewise.
2341         * include/std/numeric (__cpp_lib_gcd_lcm): Likewise.
2342         (__cpp_lib_gcd, __cpp_lib_lcm): Likewise.
2343         * include/std/tuple (__cpp_lib_apply): Likewise.
2344         (__cpp_lib_make_from_tuple): Likewise.
2345         * include/std/type_traits (__cpp_lib_integral_constant_callable)
2346         (__cpp_lib_bool_constant, __cpp_lib_logical_traits)
2347         (__cpp_lib_is_null_pointer, __cpp_lib_transformation_trait_aliases)
2348         (__cpp_lib_result_of_sfinae, __cpp_lib_void_t)
2349         (__cpp_lib_is_swappable, __cpp_lib_is_invocable)
2350         (__cpp_lib_has_unique_object_representations)
2351         (__cpp_lib_is_aggregate): Likewise.
2352         * include/std/version: Likewise.
2353         * libsupc++/new (__cpp_lib_launder): Likewise.
2354
2355 2022-01-21  Jonathan Wakely  <jwakely@redhat.com>
2356
2357         * include/std/version (__cpp_lib_shared_ptr_arrays): Fix
2358         condition for C++17 definition.
2359
2360 2022-01-21  Jonathan Wakely  <jwakely@redhat.com>
2361
2362         * include/bits/shared_ptr_atomic.h (_Sp_atomic::_Atomic_count):
2363         Add constexpr.
2364         (_Sp_atomic::_M_ptr): Add default member-initializer.
2365         * testsuite/20_util/shared_ptr/atomic/atomic_shared_ptr.cc:
2366         Check constant initialization.
2367         * testsuite/20_util/weak_ptr/atomic_weak_ptr.cc: Likewise.
2368
2369 2022-01-20  Jonathan Wakely  <jwakely@redhat.com>
2370
2371         * src/c++11/cxx11-ios_failure.cc (__constinit): Define as
2372         equivalent attribute for Clang.
2373         * src/c++11/future.cc (__constinit): Likewise.
2374         * src/c++11/system_error.cc (__constinit): Likewise.
2375         * src/c++17/memory_resource.cc (__constinit): Likewise.
2376
2377 2022-01-20  Jonathan Wakely  <jwakely@redhat.com>
2378
2379         * scripts/testsuite_flags.in: Only add src/filesystem/.libs and
2380         src/libbacktrace/.libs to LDFLAGS if those directories exist.
2381
2382 2022-01-19  Jonathan Wakely  <jwakely@redhat.com>
2383
2384         * configure.ac (GLIBCXX_ENABLE_DEBUG_FLAGS): Remove -gdwarf-4
2385         from default flags.
2386         * configure: Regenerate.
2387
2388 2022-01-19  Jonathan Wakely  <jwakely@redhat.com>
2389
2390         PR libstdc++/104123
2391         * testsuite/29_atomics/headers/stdatomic.h/c_compat.cc: Include
2392         <stddef.h>.
2393
2394 2022-01-19  Jonathan Wakely  <jwakely@redhat.com>
2395
2396         * scripts/testsuite_flags.in: Add src/libbacktrace/.libs to
2397         linker search paths.
2398         * src/Makefile.am: Fix src/debug/libbacktrace build.
2399         * src/Makefile.in: Regenerate.
2400         * src/libbacktrace/Makefile.am: Use per-library CPPFLAGS
2401         variable. Use symlinks for the source files.
2402         * src/libbacktrace/Makefile.in: Regenerate.
2403
2404 2022-01-19  Matthias Kretz  <m.kretz@gsi.de>
2405
2406         * include/experimental/bits/simd.h (__floating_point_flags): Do
2407         not rely on math_errhandling to expand to a constant expression.
2408
2409 2022-01-19  Jonathan Wakely  <jwakely@redhat.com>
2410
2411         * doc/xml/manual/evolution.xml: Document deprecations.
2412         * doc/xml/manual/status_cxx2017.xml: Update status.
2413         * doc/html/*: Regenerate.
2414
2415 2022-01-19  Jonathan Wakely  <jwakely@redhat.com>
2416
2417         * include/bits/stl_tempbuf.h (get_temporary_buffer): Change
2418         _GLIBCXX14_DEPRECATED to _GLIBCXX17_DEPRECATED.
2419
2420 2022-01-19  Jonathan Wakely  <jwakely@redhat.com>
2421
2422         * include/bits/stl_pair.h (_PCC::_DeprConsPair): Remove unused
2423         function.
2424
2425 2022-01-19  Jonathan Wakely  <jwakely@redhat.com>
2426
2427         PR libstdc++/104101
2428         * include/bits/shared_ptr_atomic.h (_Sp_atomic::_Atomic_count::lock):
2429         Only use __thread_relax if __cpp_lib_atomic_wait is defined.
2430
2431 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
2432
2433         PR libstdc++/104099
2434         * include/bits/basic_string.h (basic_string(nullptr_t)): Only
2435         define for C++23.
2436         (operator=(nullptr_t)): Likewise.
2437         * include/bits/cow_string.h: Likewise.
2438         * include/std/string_view (basic_string_view(nullptr_t)):
2439         Likewise.
2440         * testsuite/21_strings/basic_string/cons/char/nullptr.cc: Adjust
2441         expected error. Add examples that become ill-formed in C++23.
2442         * testsuite/21_strings/basic_string_view/cons/char/nonnull.cc:
2443         Adjust expected errors.
2444         * testsuite/21_strings/basic_string_view/cons/wchar_t/nonnull.cc:
2445         Likewise.
2446
2447 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
2448
2449         PR libstdc++/104098
2450         * include/bits/stl_iterator.h (reverse_iterator): Check
2451         __cpp_lib_concepts instead of __cplusplus.
2452
2453 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
2454
2455         PR libstdc++/101124
2456         * include/bits/stl_pair.h (pair): Adjust constraints on
2457         deprecated constructors accepting literal zero as null pointer
2458         constant. Improve wording of deprecated attribute.
2459         * testsuite/20_util/pair/cons/99957.cc: Check that deprecated
2460         constructors do not cause ambiguities for copyable types.
2461
2462 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
2463
2464         * include/bits/stl_function.h (ptr_fun): Fix suggestion for
2465         non-deprecated alternative.
2466
2467 2022-01-18  Tom Honermann  <tom@honermann.net>
2468
2469         * acinclude.m4: Define config macros if uchar.h provides
2470         c8rtomb() and mbrtoc8().
2471         * config.h.in: Regenerate.
2472         * configure: Regenerate.
2473         * include/c_compatibility/uchar.h (c8rtomb, mbrtoc8): Define.
2474         * include/c_global/cuchar (c8rtomb, mbrtoc8): Likewise.
2475         * include/c_std/cuchar (c8rtomb, mbrtoc8): Likewise.
2476         * testsuite/21_strings/headers/cuchar/functions_std_cxx20.cc:
2477         New test.
2478         * testsuite/21_strings/headers/cuchar/functions_std_fchar8_t.cc:
2479         New test.
2480
2481 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
2482
2483         * include/Makefile.am: Install new header.
2484         * include/Makefile.in: Regenerate.
2485         * include/c_compatibility/stdatomic.h: New file.
2486         * testsuite/29_atomics/headers/stdatomic.h/c_compat.cc: New test.
2487
2488 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
2489
2490         PR libstdc++/104080
2491         * src/c++17/fast_float/LOCAL_PATCHES: Update.
2492         * src/c++17/fast_float/fast_float.h (FASTFLOAT_IS_BIG_ENDIAN):
2493         Define in terms of __BYTE_ORDER__.
2494
2495 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
2496
2497         PR libstdc++/104080
2498         * src/c++17/fast_float/LOCAL_PATCHES: UPDATE.
2499         * src/c++17/fast_float/fast_float.h (round): Use explicit
2500         template argument list for std::min.
2501
2502 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
2503
2504         * doc/xml/manual/status_cxx2017.xml: Update C++17 status.
2505         * doc/xml/manual/status_cxx2020.xml: Use 12.1 instead of 12 for
2506         upcoming release.
2507         * doc/html/manual/status.html: Regenerate.
2508
2509 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
2510
2511         * acinclude.m4 (GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING): Improve
2512         comments.
2513         * configure: Regenerate.
2514
2515 2022-01-17  Patrick Palka  <ppalka@redhat.com>
2516
2517         * src/c++17/floating_from_chars.cc: (USE_LIB_FAST_FLOAT):
2518         Conditionally define, and use it to conditionally include
2519         fast_float.
2520         (from_chars): Use fast_float for float and double when
2521         USE_LIB_FAST_FLOAT.
2522
2523 2022-01-17  Patrick Palka  <ppalka@redhat.com>
2524
2525         * src/c++17/fast_float/LOCAL_PATCHES: Update.
2526         * src/c++17/fast_float/fast_float.h (from_chars_advanced): In
2527         case of over/underflow, return errc::result_out_of_range and don't
2528         modify 'value'.
2529
2530 2022-01-17  Patrick Palka  <ppalka@redhat.com>
2531
2532         * src/c++17/fast_float/LOCAL_PATCHES: Update.
2533         * src/c++17/fast_float/fast_float.h: Apply local modifications.
2534
2535 2022-01-17  Patrick Palka  <ppalka@redhat.com>
2536
2537         * src/c++17/fast_float/LOCAL_PATCHES: New file.
2538         * src/c++17/fast_float/MERGE: New file.
2539         * src/c++17/fast_float/README.md: New file, copied from the
2540         fast_float repository.
2541         * src/c++17/fast_float/fast_float.h: New file, an amalgamation
2542         of the fast_float library.
2543
2544 2022-01-17  Patrick Palka  <ppalka@redhat.com>
2545
2546         * src/c++17/floating_from_chars.cc: Include <bit>.
2547         (ascii_to_hexit, starts_with_ci): Conditionally define.
2548         (__floating_from_chars_hex):  Conditionally define.
2549         (from_chars): Use __floating_from_chars_hex for
2550         chars_format::hex parsing of binary32/64 float/double.
2551         (testsuite/20_util/from_chars/7.cc): New test.
2552         * testsuite/20_util/from_chars/7.cc: New file.
2553
2554 2022-01-17  Jonathan Wakely  <jwakely@redhat.com>
2555
2556         * acinclude.m4 (GLIBCXX_ENABLE_BACKTRACE): New macro.
2557         * configure.ac: Use GLIBCXX_ENABLE_BACKTRACE.
2558         * include/Makefile.am: Add new header.
2559         * include/Makefile.in: Regenerate.
2560         * include/std/stacktrace: New header.
2561         * include/std/version (__cpp_lib_stacktrace): Define.
2562         * Makefile.in: Regenerate.
2563         * config.h.in: Regenerate.
2564         * configure: Regenerate.
2565         * doc/Makefile.in: Regenerate.
2566         * libsupc++/Makefile.in: Regenerate.
2567         * po/Makefile.in: Regenerate.
2568         * python/Makefile.in: Regenerate.
2569         * src/Makefile.am: Regenerate.
2570         * src/Makefile.in: Regenerate.
2571         * src/c++11/Makefile.in: Regenerate.
2572         * src/c++17/Makefile.in: Regenerate.
2573         * src/c++20/Makefile.in: Regenerate.
2574         * src/c++98/Makefile.in: Regenerate.
2575         * src/filesystem/Makefile.in: Regenerate.
2576         * testsuite/Makefile.in: Regenerate.
2577         * src/libbacktrace/Makefile.am: New file.
2578         * src/libbacktrace/Makefile.in: New file.
2579         * src/libbacktrace/backtrace-rename.h: New file.
2580         * src/libbacktrace/backtrace-supported.h.in: New file.
2581         * src/libbacktrace/config.h.in: New file.
2582         * testsuite/lib/libstdc++.exp (check_effective_target_stacktrace):
2583         New proc.
2584         * testsuite/20_util/stacktrace/entry.cc: New test.
2585         * testsuite/20_util/stacktrace/synopsis.cc: New test.
2586         * testsuite/20_util/stacktrace/version.cc: New test.
2587
2588 2022-01-17  Jonathan Wakely  <jwakely@redhat.com>
2589
2590         * doc/xml/manual/status_cxx2020.xml: Use final C++20 option
2591         names.
2592         * doc/html/manual/status.html: Regenerate.
2593
2594 2022-01-17  Jonathan Wakely  <jwakely@redhat.com>
2595
2596         PR libstdc++/103650
2597         * include/Makefile.am: Rename LT_OBJDIR and STDC_HEADERS.
2598         * include/Makefile.in: Regenerate.
2599         * testsuite/17_intro/headers/c++1998/103650.cc: New test.
2600
2601 2022-01-17  Matthias Kretz  <m.kretz@gsi.de>
2602
2603         * include/experimental/bits/simd.h (__floating_point_flags): Do
2604         not rely on the presence of the math_errhandling macro.
2605
2606 2022-01-17  Jonathan Wakely  <jwakely@redhat.com>
2607
2608         * include/bits/shared_ptr_atomic.h (_Sp_atomic): Add typename
2609         to qualified-id for dependent type.
2610
2611 2022-01-17  Jonathan Wakely  <jwakely@redhat.com>
2612
2613         * doc/xml/manual/status_cxx2020.xml: Update.
2614         * doc/html/manual/status.html: Regenerate.
2615
2616 2022-01-17  Jonathan Wakely  <jwakely@redhat.com>
2617             Thomas Rodgers  <trodgers@redhat.com>
2618
2619         * include/bits/shared_ptr_atomic.h (__cpp_lib_atomic_shared_ptr):
2620         New macro.
2621         (_Sp_atomic): New class template.
2622         (atomic<shared_ptr<T>>, atomic<weak_ptr<T>>): New partial
2623         specializations.
2624         * include/bits/shared_ptr_base.h (__shared_count, __weak_count)
2625         (__shared_ptr, __weak_ptr): Declare _Sp_atomic as a friend.
2626         * include/std/version (__cpp_lib_atomic_shared_ptr): New macro.
2627         * testsuite/20_util/shared_ptr/atomic/atomic_shared_ptr.cc: New
2628         test.
2629         * testsuite/20_util/weak_ptr/atomic_weak_ptr.cc: New test.
2630
2631 2022-01-15  Matthias Kretz  <m.kretz@gsi.de>
2632
2633         * include/experimental/bits/simd.h: Move feature detection bools
2634         and add __have_avx512bitalg, __have_avx512vbmi2,
2635         __have_avx512vbmi, __have_avx512ifma, __have_avx512cd,
2636         __have_avx512vnni, __have_avx512vpopcntdq.
2637         (__detail::__machine_flags): New function which returns a unique
2638         uint64 depending on relevant -m and -f flags.
2639         (__detail::__odr_helper): New type alias for either an anonymous
2640         type or a type specialized with the __machine_flags number.
2641         (_SimdIntOperators): Change template parameters from _Impl to
2642         _Tp, _Abi because _Impl now has an __odr_helper parameter which
2643         may be _OdrEnforcer from the anonymous namespace, which makes
2644         for a bad base class.
2645         (many): Either add __odr_helper template parameter or mark as
2646         always_inline.
2647         * include/experimental/bits/simd_detail.h: Add defines for
2648         AVX512BITALG, AVX512VBMI2, AVX512VBMI, AVX512IFMA, AVX512CD,
2649         AVX512VNNI, AVX512VPOPCNTDQ, and AVX512VP2INTERSECT.
2650         * include/experimental/bits/simd_builtin.h: Add __odr_helper
2651         template parameter or mark as always_inline.
2652         * include/experimental/bits/simd_fixed_size.h: Ditto.
2653         * include/experimental/bits/simd_math.h: Ditto.
2654         * include/experimental/bits/simd_scalar.h: Ditto.
2655         * include/experimental/bits/simd_neon.h: Add __odr_helper
2656         template parameter.
2657         * include/experimental/bits/simd_ppc.h: Ditto.
2658         * include/experimental/bits/simd_x86.h: Ditto.
2659
2660 2022-01-14  Uroš Bizjak  <ubizjak@gmail.com>
2661
2662         * testsuite/22_locale/numpunct/members/char/3.cc:
2663         Require pt_PT locale instead of nl_NL.
2664         (test02): Use pt_PT locale instead of nl_NL.
2665
2666 2022-01-14  Jonathan Wakely  <jwakely@redhat.com>
2667
2668         PR libstdc++/91260
2669         PR libstdc++/91383
2670         PR libstdc++/95065
2671         * include/backward/binders.h (bind1st, bind2nd): Add deprecated
2672         attribute.
2673         * include/bits/refwrap.h (_Maybe_unary_or_binary_function):
2674         Disable deprecated warnings for base classes.
2675         (_Reference_wrapper_base): Likewise.
2676         * include/bits/shared_ptr_base.h (_Sp_owner_less): Likewise.
2677         * include/bits/stl_bvector.h (_Bit_iterator_base): Likewise.
2678         * include/bits/stl_function.h (unary_function, binary_function):
2679         Add deprecated attribute.
2680         (unary_negate, not1, binary_negate, not2, ptr_fun)
2681         (pointer_to_unary_function, pointer_to_binary_function)
2682         (mem_fun_t, const_mem_fun_t, mem_fun_ref_t, const_mem_fun_ref_t)
2683         (mem_fun1_t, const_mem_fun1_t, mem_fun_ref1_t)
2684         (const_mem_fun1_ref_t, mem_fun, mem_fun_ref): Add deprecated
2685         attributes.
2686         * include/bits/stl_iterator.h: Disable deprecated warnings for
2687         std::iterator base classes.
2688         * include/bits/stl_iterator_base_types.h (iterator): Add
2689         deprecated attribute.
2690         * include/bits/stl_map.h (map::value_compare): Disable
2691         deprecated warnings for base class.
2692         * include/bits/stl_multimap.h (multimap::value_compare):
2693         Likewise.
2694         * include/bits/stl_raw_storage_iter.h (raw_storage_iterator):
2695         Add deprecated attribute.
2696         * include/bits/stl_tempbuf.h (get_temporary_buffer): Likewise.
2697         * include/bits/stream_iterator.h: Disable deprecated warnings.
2698         * include/bits/streambuf_iterator.h: Likewise.
2699         * include/ext/bitmap_allocator.h: Remove unary_function base
2700         classes.
2701         * include/ext/functional: Disable deprecated warnings.
2702         * include/ext/rope: Likewise.
2703         * include/ext/throw_allocator.h: Likewise.
2704         * include/std/type_traits (result_of): Add deprecated attribute.
2705         * include/tr1/functional: Disable deprecated warnings.
2706         * include/tr1/functional_hash.h: Likewise.
2707         * testsuite/20_util/function_objects/binders/1.cc: Add
2708         -Wno-disable-deprecations.
2709         * testsuite/20_util/function_objects/binders/3113.cc: Likewise.
2710         * testsuite/20_util/function_objects/constexpr.cc: Add
2711         dg-warning.
2712         * testsuite/20_util/raw_storage_iterator/base.cc: Likewise.
2713         * testsuite/20_util/raw_storage_iterator/dr2127.cc: Likewise.
2714         * testsuite/20_util/raw_storage_iterator/requirements/base_classes.cc:
2715         Likewise.
2716         * testsuite/20_util/raw_storage_iterator/requirements/explicit_instantiation/1.cc:
2717         Likewise.
2718         * testsuite/20_util/raw_storage_iterator/requirements/typedefs.cc:
2719         Likewise.
2720         * testsuite/20_util/reference_wrapper/24803.cc:
2721         Likewise.
2722         * testsuite/20_util/reference_wrapper/typedefs.cc: Enable for
2723         C++20 and check for absence of nested types.
2724         * testsuite/20_util/shared_ptr/comparison/less.cc: Remove
2725         std::binary_function base class.
2726         * testsuite/20_util/temporary_buffer.cc: Add dg-warning.
2727         * testsuite/21_strings/basic_string/cons/char/69092.cc: Remove
2728         std::iterator base class.
2729         * testsuite/24_iterators/back_insert_iterator/requirements/base_classes.cc:
2730         Likewise.
2731         * testsuite/24_iterators/front_insert_iterator/requirements/base_classes.cc:
2732         Likewise.
2733         * testsuite/24_iterators/insert_iterator/requirements/base_classes.cc:
2734         Likewise.
2735         * testsuite/24_iterators/istream_iterator/requirements/base_classes.cc:
2736         Likewise.
2737         * testsuite/24_iterators/istreambuf_iterator/92285.cc:
2738         Likewise.
2739         * testsuite/24_iterators/istreambuf_iterator/requirements/base_classes.cc:
2740         Likewise.
2741         * testsuite/24_iterators/ostream_iterator/requirements/base_classes.cc:
2742         Likewise.
2743         * testsuite/24_iterators/ostreambuf_iterator/requirements/base_classes.cc:
2744         Likewise.
2745         * testsuite/24_iterators/reverse_iterator/requirements/base_classes.cc:
2746         Likewise.
2747         * testsuite/25_algorithms/copy/34595.cc:
2748         Likewise.
2749         * testsuite/25_algorithms/minmax/3.cc: Remove std::binary_function
2750         base class.
2751         * testsuite/25_algorithms/all_of/requirements/explicit_instantiation/2.cc:
2752         Disable deprecated warnings.
2753         * testsuite/25_algorithms/all_of/requirements/explicit_instantiation/pod.cc:
2754         Likewise.
2755         * testsuite/25_algorithms/any_of/requirements/explicit_instantiation/2.cc:
2756         Likewise.
2757         * testsuite/25_algorithms/any_of/requirements/explicit_instantiation/pod.cc:
2758         Likewise.
2759         * testsuite/25_algorithms/copy_if/requirements/explicit_instantiation/2.cc:
2760         Likewise.
2761         * testsuite/25_algorithms/copy_if/requirements/explicit_instantiation/pod.cc:
2762         Likewise.
2763         * testsuite/25_algorithms/count_if/requirements/explicit_instantiation/2.cc:
2764         Likewise.
2765         * testsuite/25_algorithms/count_if/requirements/explicit_instantiation/pod.cc:
2766         Likewise.
2767         * testsuite/25_algorithms/find_end/requirements/explicit_instantiation/2.cc:
2768         Likewise.
2769         * testsuite/25_algorithms/find_end/requirements/explicit_instantiation/pod.cc:
2770         Likewise.
2771         * testsuite/25_algorithms/find_first_of/requirements/explicit_instantiation/2.cc:
2772         Likewise.
2773         * testsuite/25_algorithms/find_first_of/requirements/explicit_instantiation/pod.cc:
2774         Likewise.
2775         * testsuite/25_algorithms/find_if/requirements/explicit_instantiation/2.cc:
2776         Likewise.
2777         * testsuite/25_algorithms/find_if/requirements/explicit_instantiation/pod.cc:
2778         Likewise.
2779         * testsuite/25_algorithms/find_if_not/requirements/explicit_instantiation/2.cc:
2780         Likewise.
2781         * testsuite/25_algorithms/find_if_not/requirements/explicit_instantiation/pod.cc:
2782         Likewise.
2783         * testsuite/25_algorithms/for_each/requirements/explicit_instantiation/2.cc:
2784         Likewise.
2785         * testsuite/25_algorithms/for_each/requirements/explicit_instantiation/pod.cc:
2786         Likewise.
2787         * testsuite/25_algorithms/is_partitioned/requirements/explicit_instantiation/2.cc:
2788         Likewise.
2789         * testsuite/25_algorithms/is_partitioned/requirements/explicit_instantiation/pod.cc:
2790         Likewise.
2791         * testsuite/25_algorithms/is_permutation/requirements/explicit_instantiation/2.cc:
2792         Likewise.
2793         * testsuite/25_algorithms/is_permutation/requirements/explicit_instantiation/pod.cc:
2794         Likewise.
2795         * testsuite/25_algorithms/none_of/requirements/explicit_instantiation/2.cc:
2796         Likewise.
2797         * testsuite/25_algorithms/none_of/requirements/explicit_instantiation/pod.cc:
2798         Likewise.
2799         * testsuite/25_algorithms/partition/requirements/explicit_instantiation/2.cc:
2800         Likewise.
2801         * testsuite/25_algorithms/partition/requirements/explicit_instantiation/pod.cc:
2802         Likewise.
2803         * testsuite/25_algorithms/partition_copy/requirements/explicit_instantiation/2.cc:
2804         Likewise.
2805         * testsuite/25_algorithms/partition_copy/requirements/explicit_instantiation/pod.cc:
2806         Likewise.
2807         * testsuite/25_algorithms/partition_point/requirements/explicit_instantiation/2.cc:
2808         Likewise.
2809         * testsuite/25_algorithms/partition_point/requirements/explicit_instantiation/pod.cc:
2810         Likewise.
2811         * testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/2.cc:
2812         Likewise.
2813         * testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/pod.cc:
2814         Likewise.
2815         * testsuite/25_algorithms/remove_copy_if/requirements/explicit_instantiation/2.cc:
2816         Likewise.
2817         * testsuite/25_algorithms/remove_copy_if/requirements/explicit_instantiation/pod.cc:
2818         Likewise.
2819         * testsuite/25_algorithms/remove_if/requirements/explicit_instantiation/2.cc:
2820         Likewise.
2821         * testsuite/25_algorithms/remove_if/requirements/explicit_instantiation/pod.cc:
2822         Likewise.
2823         * testsuite/25_algorithms/replace_copy_if/requirements/explicit_instantiation/2.cc:
2824         Likewise.
2825         * testsuite/25_algorithms/replace_copy_if/requirements/explicit_instantiation/pod.cc:
2826         Likewise.
2827         * testsuite/25_algorithms/replace_if/requirements/explicit_instantiation/2.cc:
2828         Likewise.
2829         * testsuite/25_algorithms/replace_if/requirements/explicit_instantiation/pod.cc:
2830         Likewise.
2831         * testsuite/25_algorithms/search/requirements/explicit_instantiation/2.cc:
2832         Likewise.
2833         * testsuite/25_algorithms/search/requirements/explicit_instantiation/pod.cc:
2834         Likewise.
2835         * testsuite/25_algorithms/search_n/requirements/explicit_instantiation/2.cc:
2836         Likewise.
2837         * testsuite/25_algorithms/search_n/requirements/explicit_instantiation/pod.cc:
2838         Likewise.
2839         * testsuite/25_algorithms/stable_partition/requirements/explicit_instantiation/2.cc:
2840         Likewise.
2841         * testsuite/25_algorithms/stable_partition/requirements/explicit_instantiation/pod.cc:
2842         Likewise.
2843         * testsuite/25_algorithms/transform/requirements/explicit_instantiation/2.cc:
2844         Likewise.
2845         * testsuite/25_algorithms/transform/requirements/explicit_instantiation/pod.cc:
2846         Likewise.
2847         * testsuite/27_io/basic_filebuf/underflow/wchar_t/9178.cc: Add
2848         dg-warning.
2849         * testsuite/ext/pb_ds/example/priority_queue_erase_if.cc:
2850         Likewise.
2851         * testsuite/ext/pb_ds/example/priority_queue_split_join.cc:
2852         Likewise.
2853         * testsuite/tr1/3_function_objects/reference_wrapper/typedefs.cc:
2854         Disable deprecated warnings.
2855         * testsuite/tr1/6_containers/hash/requirements/base_classes.cc:
2856         Likewise.
2857         * testsuite/util/regression/trait/erase_if_fn.hpp: Remove
2858         std::unary_function base classes.
2859         * testsuite/util/testsuite_iterators.h (output_iterator_wrapper):
2860         Remove std::iterator base classes.
2861
2862 2022-01-14  Jonathan Wakely  <jwakely@redhat.com>
2863
2864         * include/bits/shared_ptr.h (__cpp_lib_shared_ptr_weak_type):
2865         Correct type of macro value.
2866         (shared_ptr): Add additional friend declarations.
2867         (make_shared, allocate_shared): Constrain existing overloads and
2868         remove static_assert.
2869         * include/bits/shared_ptr_base.h (__cpp_lib_smart_ptr_for_overwrite):
2870         New macro.
2871         (_Sp_counted_ptr_inplace<T, Alloc, Lp>): New partial
2872         specialization for use with make_shared_for_overwrite.
2873         (__cpp_lib_shared_ptr_arrays): Update value for C++20.
2874         (_Sp_counted_array_base): New class template.
2875         (_Sp_counted_array): New class template.
2876         (__shared_count(_Tp*&, const _Sp_counted_array_base&, _Init)):
2877         New constructor for allocating shared arrays.
2878         (__shared_ptr(const _Sp_counted_array_base&, _Init)): Likewise.
2879         * include/std/version (__cpp_lib_shared_ptr_weak_type): Correct
2880         type.
2881         (__cpp_lib_shared_ptr_arrays): Update value for C++20.
2882         (__cpp_lib_smart_ptr_for_overwrite): New macro.
2883         * testsuite/20_util/shared_ptr/creation/99006.cc: Adjust
2884         expected errors.
2885         * testsuite/20_util/shared_ptr/creation/array.cc: New test.
2886         * testsuite/20_util/shared_ptr/creation/overwrite.cc: New test.
2887         * testsuite/20_util/shared_ptr/creation/version.cc: New test.
2888         * testsuite/20_util/unique_ptr/creation/for_overwrite.cc: Check
2889         feature test macro. Test non-trivial default-initialization.
2890
2891 2022-01-14  Jonathan Wakely  <jwakely@redhat.com>
2892
2893         * include/bits/stl_construct.h (_Construct, _Construct_novalue):
2894         Also cast away cv-qualifiers when converting pointer to void.
2895         * testsuite/20_util/allocator/void.cc: Test construct function
2896         with cv-qualified types.
2897
2898 2022-01-14  Jonathan Wakely  <jwakely@redhat.com>
2899
2900         PR libstdc++/103992
2901         * include/bits/stl_iterator.h (common_iterator): Use
2902         std::construct_at instead of placement new.
2903         * testsuite/24_iterators/common_iterator/1.cc: Check copy
2904         construction is usable in constant expressions.
2905
2906 2022-01-14  Jonathan Wakely  <jwakely@redhat.com>
2907
2908         * doc/xml/manual/status_cxx2011.xml: Document new tokens
2909         accepted by std::random_device constructor.
2910         * doc/html/manual/status.html: Regenerate.
2911
2912 2022-01-12  Patrick Palka  <ppalka@redhat.com>
2913
2914         * testsuite/20_util/to_chars/103955.cc: Add explicit dg-do
2915         directive.
2916
2917 2022-01-12  Patrick Palka  <ppalka@redhat.com>
2918
2919         PR libstdc++/103955
2920         * src/c++17/floating_to_chars.cc (__floating_to_chars_hex):
2921         Track the excess precision separately from the effective
2922         precision.  Avoid overflow in bounds check by splitting it into
2923         two checks.
2924         (__floating_to_chars_precision): Avoid overflow in bounds checks
2925         similarly.
2926         * testsuite/20_util/to_chars/103955.cc: New test.
2927
2928 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
2929
2930         PR libstdc++/103726
2931         * include/Makefile.am: Install <source_location> for
2932         freestanding.
2933         * include/Makefile.in: Regenerate.
2934         * include/std/version (__cpp_lib_source_location): Define for
2935         freestanding.
2936
2937 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
2938
2939         * include/std/ranges (ranges::lazy_split_view::_InnerIter::end()):
2940         Add neoxcept (LWG 3593).
2941
2942 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
2943
2944         * include/std/ranges (ranges::__detail::__box): Add constexpr to
2945         assignment operators (LWG 3572).
2946         * testsuite/std/ranges/adaptors/filter.cc: Check assignment of a
2947         view that uses copyable-box.
2948
2949 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
2950
2951         PR libstdc++/103726
2952         * include/Makefile.am: Install <coroutine> for freestanding.
2953         * include/Makefile.in: Regenerate.
2954         * include/std/coroutine: Adjust headers and preprocessor
2955         conditions.
2956         (__coroutine_traits_impl): Use concepts when available.
2957         [_GLIBCXX_HOSTED] (hash<coroutine_handle>): Define.
2958
2959 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
2960
2961         * include/std/ostream (operator<<(basic_ostream&, charT)):
2962         Use unformatted input if no padding is needed.
2963         (operator<<(basic_ostream<char>&, char)): Likewise.
2964
2965 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
2966
2967         PR libstdc++/103891
2968         * include/bits/c++config (_GLIBCXX_HAVE_COND_TRIVIAL_SPECIAL_MEMBERS):
2969         Define.
2970         * include/std/variant (__cpp_lib_variant): Only define C++20
2971         value when the compiler is known to support conditionally
2972         trivial destructors.
2973         * include/std/version (__cpp_lib_variant): Likewise.
2974
2975 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
2976
2977         * include/bits/stl_iterator.h (common_iterator): Add constexpr
2978         to all member functions (LWG 3574).
2979         * testsuite/24_iterators/common_iterator/1.cc: Evaluate some
2980         tests as constant expressions.
2981         * testsuite/24_iterators/common_iterator/2.cc: Likewise.
2982
2983 2022-01-10  Jakub Jelinek  <jakub@redhat.com>
2984
2985         PR libstdc++/77760
2986         * include/bits/locale_facets_nonio.h (__time_get_state): New struct.
2987         (time_get::_M_extract_via_format): Declare new method with
2988         __time_get_state& as an extra argument.
2989         * include/bits/locale_facets_nonio.tcc (_M_extract_via_format): Add
2990         __state argument, set various fields in it while parsing.  Handle %j,
2991         %U, %w and %W, fix up handling of %y, %Y and %C, don't adjust tm_hour
2992         for %p immediately.  Add a wrapper around the method without the
2993         __state argument for backwards compatibility.
2994         (_M_extract_num): Remove all __len == 4 special cases.
2995         (time_get::do_get_time, time_get::do_get_date, time_get::do_get): Zero
2996         initialize __state, pass it to _M_extract_via_format and finalize it
2997         at the end.
2998         (do_get_year): For 1-2 digit parsed years, map 0-68 to 2000-2068,
2999         69-99 to 1969-1999.  For 3-4 digit parsed years use that as year.
3000         (get): If do_get isn't overloaded from the locale_facets_nonio.tcc
3001         version, don't call do_get but call _M_extract_via_format instead to
3002         pass around state.
3003         * config/abi/pre/gnu.ver (GLIBCXX_3.4.30): Export _M_extract_via_format
3004         with extra __time_get_state and __time_get_state::_M_finalize_state.
3005         * src/c++98/locale_facets.cc (is_leap, day_of_the_week,
3006         day_of_the_year): New functions in anon namespace.
3007         (mon_yday): New var in anon namespace.
3008         (__time_get_state::_M_finalize_state): Define.
3009         * testsuite/22_locale/time_get/get/char/4.cc: New test.
3010         * testsuite/22_locale/time_get/get/wchar_t/4.cc: New test.
3011         * testsuite/22_locale/time_get/get_year/char/1.cc (test01): Parse 197
3012         as year 197AD instead of error.
3013         * testsuite/22_locale/time_get/get_year/char/5.cc (test01): Parse 1 as
3014         year 2001 instead of error.
3015         * testsuite/22_locale/time_get/get_year/char/6.cc: New test.
3016         * testsuite/22_locale/time_get/get_year/wchar_t/1.cc (test01): Parse
3017         197 as year 197AD instead of error.
3018         * testsuite/22_locale/time_get/get_year/wchar_t/5.cc (test01): Parse
3019         1 as year 2001 instead of error.
3020         * testsuite/22_locale/time_get/get_year/wchar_t/6.cc: New test.
3021
3022 2022-01-10  Jonathan Wakely  <jwakely@redhat.com>
3023
3024         PR libstdc++/103866
3025         * acinclude.m4 (GLIBCXX_COMPUTE_STDIO_INTEGER_CONSTANTS): Do
3026         nothing for freestanding builds.
3027         (GLIBCXX_ENABLE_HOSTED): Define FREESTANDING_FLAGS.
3028         * configure.ac: Do not use AC_LIBTOOL_DLOPEN when configured
3029         with --without-headers.  Do not use GCC_HEADER_STDINT for
3030         freestanding builds.
3031         * libsupc++/Makefile.am (HOSTED_CXXFLAGS): Use -ffreestanding
3032         for freestanding builds.
3033         * configure: Regenerate.
3034         * Makefile.in: Regenerate.
3035         * doc/Makefile.in: Regenerate.
3036         * include/Makefile.in: Regenerate.
3037         * libsupc++/Makefile.in: Regenerate.
3038         * po/Makefile.in: Regenerate.
3039         * python/Makefile.in: Regenerate.
3040         * src/Makefile.in: Regenerate.
3041         * src/c++11/Makefile.in: Regenerate.
3042         * src/c++17/Makefile.in: Regenerate.
3043         * src/c++20/Makefile.in: Regenerate.
3044         * src/c++98/Makefile.in: Regenerate.
3045         * src/filesystem/Makefile.in: Regenerate.
3046         * testsuite/Makefile.in: Regenerate.
3047
3048 2022-01-10  Jonathan Wakely  <jwakely@redhat.com>
3049
3050         * testsuite/28_regex/algorithms/regex_replace/char/103664.cc:
3051         Add dg-timeout-factor directive.
3052         * testsuite/28_regex/basic_regex/84110.cc: Likewise.
3053         * testsuite/28_regex/basic_regex/ctors/char/other.cc: Likewise.
3054         * testsuite/28_regex/match_results/102667.cc: Likewise.
3055
3056 2022-01-10  Jonathan Wakely  <jwakely@redhat.com>
3057
3058         * doc/xml/manual/using.xml: Update documentation around default
3059         -std option.
3060         * doc/html/*: Regenerate.
3061
3062 2022-01-10  Jonathan Wakely  <jwakely@redhat.com>
3063
3064         PR libstdc++/100017
3065         * src/c++17/Makefile.am (AM_CXXFLAGS): Add -nostdinc++.
3066         * src/c++17/Makefile.in: Regenerate.
3067
3068 2022-01-09  Sandra Loosemore  <sandra@codesourcery.com>
3069
3070         * testsuite/18_support/type_info/constexpr.cc: Add explicit
3071         -fdelete-null-pointer-checks option.
3072
3073 2022-01-06  Pavel I. Kryukov  <pavel.kryukov@phystech.edu>
3074             Jonathan Wakely  <jwakely@redhat.com>
3075
3076         PR libstdc++/103853
3077         * include/bits/forward_list.tcc (forward_list::merge): Check for
3078         self-merge.
3079         * testsuite/23_containers/forward_list/operations/merge.cc: New test.
3080
3081 2022-01-06  Jonathan Wakely  <jwakely@redhat.com>
3082
3083         * include/bits/regex.h (basic_regex, match_results): Qualify
3084         name in friend declaration, to work around Clang bug.
3085
3086 2022-01-06  Jonathan Wakely  <jwakely@redhat.com>
3087
3088         * testsuite/ext/rope/pthread7-rope.cc: Add dg-timeout-factor.
3089
3090 2022-01-06  Jonathan Wakely  <jwakely@redhat.com>
3091
3092         PR libstdc++/103911
3093         * include/std/charconv (__from_chars_alpha_to_num): Return
3094         char instead of unsigned char. Change invalid return value to
3095         127 instead of using numeric trait.
3096         (__from_chars_alnum): Fix comment. Do not use std::isdigit.
3097         Change type of variable to char.
3098
3099 2022-01-05  François Dumont  <fdumont@gcc.gnu.org>
3100
3101         PR libstdc++/68303
3102         * include/bits/hashtable_policy.h
3103         (_Hashtable_hash_traits<_Hash>): New.
3104         (_Hash_code_base<>::_M_hash_code(const _Hash_node_value<>&)): New.
3105         (_Hashtable_base<>::_M_key_equals): New.
3106         (_Hashtable_base<>::_M_equals): Use latter.
3107         (_Hashtable_base<>::_M_key_equals_tr): New.
3108         (_Hashtable_base<>::_M_equals_tr): Use latter.
3109         * include/bits/hashtable.h
3110         (_Hashtable<>::__small_size_threshold()): New, use _Hashtable_hash_traits.
3111         (_Hashtable<>::find): Loop through elements to look for key if size is lower
3112         than __small_size_threshold().
3113         (_Hashtable<>::_M_emplace(true_type, _Args&&...)): Likewise.
3114         (_Hashtable<>::_M_insert_unique(_Kt&&, _Args&&, const _NodeGenerator&)): Likewise.
3115         (_Hashtable<>::_M_compute_hash_code(const_iterator, const key_type&)): New.
3116         (_Hashtable<>::_M_emplace(const_iterator, false_type, _Args&&...)): Use latter.
3117         (_Hashtable<>::_M_find_before_node(const key_type&)): New.
3118         (_Hashtable<>::_M_erase(true_type, const key_type&)): Use latter.
3119         (_Hashtable<>::_M_erase(false_type, const key_type&)): Likewise.
3120         * src/c++11/hashtable_c++0x.cc: Include <bits/functional_hash.h>.
3121         * testsuite/util/testsuite_performance.h
3122         (report_performance): Use 9 width to display memory.
3123         * testsuite/performance/23_containers/insert_erase/unordered_small_size.cc:
3124         New performance test case.
3125
3126 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
3127
3128         PR libstdc++/103919
3129         * include/bits/basic_string.h (basic_string(const T&, size_t, size_t)):
3130         Relax constraints on string_view parameter.
3131         * include/bits/cow_string.h (basic_string(const T&, size_t, size_t)):
3132         Likewise.
3133         * testsuite/21_strings/basic_string/cons/char/103919.cc: New test.
3134
3135 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
3136
3137         * config/abi/pre/gnu.ver (GLIBCXX_3.4.30): Export new symbol for
3138         ARM EABI.
3139         * include/bits/c++config (_GLIBCXX23_CONSTEXPR): Define.
3140         * include/std/version (__cpp_lib_constexpr_typeinfo): Define.
3141         * libsupc++/tinfo.cc: Add #error to ensure non-inline definition
3142         is emitted.
3143         (type_info::__equal): Define alias symbol.
3144         * libsupc++/typeinfo (type_info::before): Combine different
3145         implementations into one.
3146         (type_info::operator==): Likewise. Use address equality for
3147         constant evaluation. Call __equal for targets that require the
3148         definition to be non-inline.
3149         * testsuite/18_support/type_info/constexpr.cc: New test.
3150
3151 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
3152
3153         * src/c++11/cxx11-ios_failure.cc (io_error_category): Define
3154         class and virtual functions as 'final'.
3155         (io_category_instance): Use constinit union to make the object
3156         immortal.
3157         * src/c++11/future.cc (future_error_category): Define class and
3158         virtual functions as 'final'.
3159         (future_category_instance): Use constinit union.
3160
3161 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
3162
3163         * python/libstdcxx/v6/printers.py (StdErrorCodePrinter): Strip
3164         versioned namespace from the type name that is printed.
3165
3166 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
3167
3168         * python/libstdcxx/v6/printers.py (StdRegexStatePrinter): New
3169         printer for std::regex NFA states.
3170
3171 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
3172
3173         * testsuite/23_containers/forward_list/operations/1.cc: Fill in
3174         placeholders in comments.
3175         * testsuite/23_containers/forward_list/operations/2.cc:
3176         Likewise.
3177         * testsuite/23_containers/forward_list/operations/3.cc:
3178         Likewise.
3179         * testsuite/23_containers/forward_list/operations/4.cc:
3180         Likewise.
3181         * testsuite/23_containers/forward_list/operations/5.cc:
3182         Likewise.
3183         * testsuite/23_containers/forward_list/operations/6.cc:
3184         Likewise.
3185         * testsuite/23_containers/forward_list/operations/7.cc:
3186         Likewise.
3187
3188 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
3189
3190         PR libstdc++/103848
3191         * include/bits/stl_deque.h (operator-): Do not use 0 as null
3192         pointer constant.
3193
3194 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
3195
3196         * include/bits/alloc_traits.h (allocator_traits<allocator<void>>):
3197         Use std::_Construct for construct.
3198
3199 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
3200
3201         PR libstdc++/103877
3202         * doc/xml/faq.xml: Add '-x c++' to preprocessor command.
3203         * doc/html/faq.html: Regenerate.
3204
3205 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
3206
3207         * include/bits/regex.h (__regex_algo_impl): Change __policy and
3208         __match_mode template parameters to be function parameters.
3209         (regex_match, regex_search): Pass policy and match mode as
3210         function arguments.
3211         * include/bits/regex.tcc (__regex_algo_impl): Change template
3212         parameters to function parameters.
3213         * include/bits/regex_compiler.h (_RegexTranslatorBase): Use
3214         'if constexpr' for conditions using template parameters.
3215         (_RegexTranslator): Likewise.
3216         * include/bits/regex_executor.tcc (_Executor::_M_handle_accept):
3217         Likewise.
3218         * testsuite/util/testsuite_regex.h (regex_match_debug)
3219         (regex_search_debug): Move template arguments to function
3220         arguments.
3221
3222 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
3223
3224         * testsuite/util/testsuite_regex.h (regex_match_debug): Compare
3225         results even if the match failed.
3226
3227 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
3228
3229         * include/bits/regex_compiler.tcc: Adjust all calls to
3230         __throw_regex_error.
3231         * include/bits/regex_error.h (__throw_regex_error): Add noreturn
3232         attribute.
3233         * include/bits/regex_scanner.tcc: Likewise.
3234         * src/c++11/regex.cc (desc): New helper function.
3235         (regex_error::regex_error(error_type)): Use desc to get a string
3236         corresponding to the error code.
3237
3238 \f
3239 Copyright (C) 2022 Free Software Foundation, Inc.
3240
3241 Copying and distribution of this file, with or without modification,
3242 are permitted in any medium without royalty provided the copyright
3243 notice and this notice are preserved.