libstdc++-v3/ChangeLog

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