libstdc++-v3/ChangeLog

   1 2022-08-31  Patrick Palka  <ppalka@redhat.com>
   2
   3         * include/bits/ranges_base.h (__advance_fn::operator()): Add
   4         parentheses in assert condition to avoid -Wparentheses warning.
   5         * include/std/ranges: (take_view::take_view): Uglify 'base'.
   6         (take_while_view::take_while_view): Likewise.
   7         (elements_view::elements_view): Likewise.
   8         (views::_Zip::operator()): Adjust position of [[nodiscard]] for
   9         compatibility with -fconcepts-ts.
  10         (zip_transform_view::_Sentinel): Uglify 'OtherConst'.
  11         (views::_ZipTransform::operator()): Adjust position of
  12         [[nodiscard]] for compatibilty with -fconcepts-ts.
  13
  14 2022-08-31  Martin Liska  <mliska@suse.cz>
  15
  16         * configure: Regenerate.
  17         * crossconfig.m4: Remove deprecated ports.
  18
  19 2022-08-31  François Dumont  <fdumont@gcc.gnu.org>
  20
  21         * include/debug/debug.h: Use nullptr rather than '0' in checks in post-C++11.
  22         * include/debug/string: Likewise.
  23         * testsuite/21_strings/basic_string/operations/ends_with/char.cc: Use __gnu_test::string.
  24         * testsuite/21_strings/basic_string/operations/ends_with/nonnull.cc: Likewise.
  25         * testsuite/21_strings/basic_string/operations/ends_with/wchar_t.cc: Likewise.
  26         * testsuite/21_strings/basic_string/operations/starts_with/wchar_t.cc: Likewise.
  27         * testsuite/21_strings/basic_string/operations/starts_with/nonnull.cc: Likewise.
  28         * testsuite/21_strings/basic_string/operations/starts_with/char.cc: Likewise..
  29
  30 2022-08-31  Patrick Palka  <ppalka@redhat.com>
  31
  32         * include/std/ranges (adjacent_view): Define.
  33         (enable_borrowed_range<adjacent_view>): Define.
  34         (__detail::__repeated_tuple): Define.
  35         (adjacent_view::_Iterator): Define.
  36         (adjacent_view::_Sentinel): Define.
  37         (views::__detail::__can_adjacent_view): Define.
  38         (views::_Adjacent): Define.
  39         (views::adjacent): Define.
  40         (views::pairwise): Define.
  41         * testsuite/std/ranges/adaptors/adjacent/1.cc: New test.
  42
  43 2022-08-31  François Dumont  <fdumont@gcc.gnu.org>
  44
  45         * include/debug/formatter.h
  46         [_GLIBCXX_HAVE_STACKTRACE](__glibcxx_backtrace_state): Declare.
  47         [_GLIBCXX_HAVE_STACKTRACE](__glibcxx_backtrace_create_state): Declare.
  48         [_GLIBCXX_HAVE_STACKTRACE](__glibcxx_backtrace_full_callback): Define.
  49         [_GLIBCXX_HAVE_STACKTRACE](__glibcxx_backtrace_error_callback): Define.
  50         [_GLIBCXX_HAVE_STACKTRACE](__glibcxx_backtrace_full_func): Define.
  51         [_GLIBCXX_HAVE_STACKTRACE](__glibcxx_backtrace_full): Declare.
  52         [_GLIBCXX_HAVE_STACKTRACE](_Error_formatter::_M_backtrace_state): New.
  53         [_GLIBCXX_HAVE_STACKTRACE](_Error_formatter::_M_backtrace_full): New.
  54         * src/c++11/debug.cc [_GLIBCXX_HAVE_STACKTRACE](print_backtrace): New.
  55         (_Error_formatter::_M_error()): Adapt.
  56         * src/libbacktrace/Makefile.am: Add backtrace.c.
  57         * src/libbacktrace/Makefile.in: Regenerate.
  58         * src/libbacktrace/backtrace-rename.h (backtrace_full): New.
  59         * testsuite/23_containers/vector/debug/assign4_backtrace_neg.cc: New test.
  60         * doc/xml/manual/debug_mode.xml: Document _GLIBCXX_DEBUG_BACKTRACE.
  61         * doc/xml/manual/using.xml: Likewise.
  62
  63 2022-08-31  Patrick Palka  <ppalka@redhat.com>
  64
  65         * testsuite/20_util/logical_traits/requirements/short_circuit.cc: New test.
  66
  67 2022-08-31  Jonathan Wakely  <jwakely@redhat.com>
  68
  69         * include/bits/refwrap.h (reference_wrapper::operator()): Add
  70         noexcept-specifier and use __invoke_result instead of result_of.
  71         * testsuite/20_util/reference_wrapper/invoke-noexcept.cc: New test.
  72
  73 2022-08-31  Jonathan Wakely  <jwakely@redhat.com>
  74
  75         * testsuite/20_util/reference_wrapper/invoke-2.cc: Improve
  76         comments.
  77         * testsuite/20_util/reference_wrapper/invoke-3.cc: Likewise.
  78         * testsuite/20_util/reference_wrapper/invoke.cc: Likewise.
  79
  80 2022-08-31  Jonathan Wakely  <jwakely@redhat.com>
  81
  82         * include/bits/basic_string.h (basic_string): Add nodiscard
  83         attribute to all relevant functions.
  84         * include/std/string_view (basic_string_view): Likewise.
  85         * testsuite/21_strings/basic_string/capacity/1.cc: Cast unused
  86         results to void.
  87         * testsuite/21_strings/basic_string/capacity/char/1.cc:
  88         Likewise.
  89         * testsuite/21_strings/basic_string/capacity/wchar_t/1.cc:
  90         Likewise.
  91         * testsuite/21_strings/basic_string/cons/char/self_move.cc:
  92         Likewise.
  93         * testsuite/21_strings/basic_string/element_access/char/1.cc:
  94         Likewise.
  95         * testsuite/21_strings/basic_string/element_access/char/21674.cc:
  96         Likewise.
  97         * testsuite/21_strings/basic_string/element_access/wchar_t/1.cc:
  98         Likewise.
  99         * testsuite/21_strings/basic_string/element_access/wchar_t/21674.cc:
 100         Likewise.
 101         * testsuite/21_strings/basic_string/lwg2758.cc: Likewise.
 102         * testsuite/21_strings/basic_string/lwg2946.cc: Likewise.
 103         * testsuite/21_strings/basic_string/operations/contains/nonnull.cc:
 104         Add -Wno-unused-result to options.
 105         * testsuite/21_strings/basic_string/operations/ends_with/nonnull.cc:
 106         Likewise.
 107         * testsuite/21_strings/basic_string/operations/starts_with/nonnull.cc:
 108         Likewise.
 109         * testsuite/21_strings/basic_string/operators/char/1.cc: Cast
 110         unused results to void.
 111         * testsuite/21_strings/basic_string/operators/wchar_t/1.cc:
 112         Likewise.
 113         * testsuite/21_strings/basic_string_view/capacity/1.cc:
 114         Likewise.
 115         * testsuite/21_strings/basic_string_view/element_access/char/1.cc:
 116         Likewise.
 117         * testsuite/21_strings/basic_string_view/element_access/char/2.cc:
 118         Likewise.
 119         * testsuite/21_strings/basic_string_view/element_access/wchar_t/1.cc:
 120         Likewise.
 121         * testsuite/21_strings/basic_string_view/element_access/wchar_t/2.cc:
 122         Likewise.
 123         * testsuite/21_strings/basic_string_view/operations/contains/nonnull.cc:
 124         Likewise.
 125         Add -Wno-unused-result to options.
 126         * testsuite/21_strings/basic_string_view/operations/ends_with/nonnull.cc:
 127         Likewise.
 128         * testsuite/21_strings/basic_string_view/operations/starts_with/nonnull.cc:
 129         Likewise.
 130         * testsuite/27_io/basic_stringbuf/sputbackc/char/1.cc: Cast
 131         unused results to void.
 132         * testsuite/27_io/basic_stringbuf/sputbackc/wchar_t/1.cc:
 133         Likewise.
 134         * testsuite/27_io/basic_stringbuf/sungetc/char/1.cc: Likewise.
 135         * testsuite/27_io/basic_stringbuf/sungetc/wchar_t/1.cc:
 136         Likewise.
 137
 138 2022-08-27  Patrick Palka  <ppalka@redhat.com>
 139
 140         * testsuite/20_util/logical_traits/requirements/base_classes.cc: New test.
 141
 142 2022-08-26  Patrick Palka  <ppalka@redhat.com>
 143
 144         * include/std/ranges (zip_view::_Iterator::operator<): Remove
 145         as per LWG 3692.
 146         (zip_view::_Iterator::operator>): Likewise.
 147         (zip_view::_Iterator::operator<=): Likewise.
 148         (zip_view::_Iterator::operator>=): Likewise.
 149         (zip_view::_Iterator::operator<=>): Remove three_way_comparable
 150         constraint as per LWG 3692.
 151         (zip_transform_view::_Iterator): Ditto as per LWG 3702.
 152
 153 2022-08-26  Patrick Palka  <ppalka@redhat.com>
 154
 155         * include/std/ranges (zip_view::_Iterator): Befriend
 156         zip_transform_view.
 157         (__detail::__range_iter_cat): Define.
 158         (zip_transform_view): Define.
 159         (zip_transform_view::_Iterator): Define.
 160         (zip_transform_view::_Sentinel): Define.
 161         (views::__detail::__can_zip_transform_view): Define.
 162         (views::_ZipTransform): Define.
 163         (views::zip_transform): Define.
 164         * testsuite/std/ranges/zip_transform/1.cc: New test.
 165
 166 2022-08-26  Patrick Palka  <ppalka@redhat.com>
 167
 168         * include/std/type_traits (enable_if, __enable_if_t): Define them
 169         earlier.
 170         (__detail::__first_t): Define.
 171         (__detail::__or_fn, __detail::__and_fn): Declare.
 172         (__or_, __and_): Redefine as alias templates in terms of __or_fn
 173         and __and_fn.
 174         (__not_): Redefine as an alias template.
 175         (__detail::__disjunction_impl, __detail::__conjunction_impl):
 176         Define.
 177         (conjuction, disjunction): Redefine in terms of __disjunction_impl
 178         and __conjunction_impl.
 179
 180 2022-08-26  Jonathan Wakely  <jwakely@redhat.com>
 181
 182         * include/std/system_error (error_code::_Check): New alias
 183         template for constructor SFINAE constraint.
 184         (error_code::error_code(ErrorCodeEnum)): Use it.
 185         (error_code::operator=(ErrorCodeEnum)): Remove.
 186         (error_condition::_Check): New alias template for constraint.
 187         (error_condition::error_condition(ErrorConditionEnum)): Use it.
 188         (error_condition::operator=(ErrorConditionEnum)): Remove.
 189         * testsuite/19_diagnostics/error_code/cons/1.cc: Check
 190         constructor taking user-defined error enum.
 191         * testsuite/19_diagnostics/error_condition/cons/1.cc: Likewise.
 192
 193 2022-08-26  Jonathan Wakely  <jwakely@redhat.com>
 194
 195         * include/bits/basic_string.h (starts_with, ends_with, contains):
 196         Add nonnull attribute.
 197         * include/bits/cow_string.h (starts_with, ends_with, contains):
 198         Likewise.
 199         * include/std/string_view (starts_with, ends_with, contains):
 200         Likewise.
 201         * testsuite/21_strings/basic_string/operations/contains/nonnull.cc
 202         * testsuite/21_strings/basic_string/operations/ends_with/nonnull.cc
 203         * testsuite/21_strings/basic_string/operations/starts_with/nonnull.cc
 204         * testsuite/21_strings/basic_string_view/operations/contains/nonnull.cc
 205         * testsuite/21_strings/basic_string_view/operations/ends_with/nonnull.cc
 206         * testsuite/21_strings/basic_string_view/operations/starts_with/nonnull.cc
 207
 208 2022-08-25  Patrick Palka  <ppalka@redhat.com>
 209
 210         * include/std/ranges (lazy_split_view::_OuterIter::_M_current):
 211         Remove redundant comment.
 212         (lazy_split_view::_M_current): Likewise.
 213         (common_view::common_view): Remove commented out view-converting
 214         constructor as per LWG3405.
 215         (elements_view::_Iterator::_Iterator): Uglify 'current' and 'i'.
 216
 217 2022-08-24  Patrick Palka  <ppalka@redhat.com>
 218
 219         * include/bits/ranges_algo.h (__min_fn, min): Move to ...
 220         * include/bits/ranges_util.h: ... here, in order to avoid
 221         including all of ranges_algo.h from <ranges>.
 222         * include/std/ranges (__detail::__zip_is_common): Define for
 223         C++23 as per P2321R2.
 224         (__detail::__tuple_or_pair): Likewise.
 225         (__detail::__tuple_or_pair_t): Likewise.
 226         (__detail::__tuple_transform): Likewise.
 227         (__detail::__tuple_for_each): Likewise.
 228         (zip_view): Likewise.
 229         (enable_borrowed_range<zip_view>): Likewise.
 230         (__detail::__all_random_access): Likewise.
 231         (__detail::__all_bidirectional): Likewise.
 232         (__detail::__all_forward): Likewise.
 233         (__detail::__zip_view_iter_cat): Likewise.
 234         (zip_view::_Iterator): Likewise.
 235         (zip_view::_Sentinel): Likewise.
 236         * testsuite/std/ranges/zip/1.cc: New test.
 237
 238 2022-08-24  Jonathan Wakely  <jwakely@redhat.com>
 239
 240         Revert:
 241         2022-08-24  Will Hawkins  <whh8b@obs.cr>
 242
 243         * include/bits/basic_string.h (operator+(const string&, const char*)):
 244         Remove naive implementation.
 245         * include/bits/basic_string.tcc (operator+(const string&, const char*)):
 246         Add single-allocation implementation.
 247
 248 2022-08-24  Patrick Palka  <ppalka@redhat.com>
 249
 250         * include/bits/stl_pair.h (pair::swap const): Add non-standard
 251         is_swappable_v constraints.
 252         * include/std/tuple (tuple::swap const): Likewise.
 253         * testsuite/20_util/tuple/cons/noexcept_specs.cc: Correct some
 254         asserts in C++23 mode.
 255
 256 2022-08-24  Jonathan Wakely  <jwakely@redhat.com>
 257
 258         * include/bits/stl_algo.h (__stable_sort): Cast size to
 259         iterator's difference type.
 260         * testsuite/25_algorithms/stable_sort/4.cc: New test.
 261
 262 2022-08-24  Will Hawkins  <whh8b@obs.cr>
 263
 264         * include/bits/basic_string.h (operator+(const string&, const char*)):
 265         Remove naive implementation.
 266         * include/bits/basic_string.tcc (operator+(const string&, const char*)):
 267         Add single-allocation implementation.
 268
 269 2022-08-24  Jonathan Wakely  <jwakely@redhat.com>
 270
 271         * testsuite/20_util/duration_cast/rounding.cc: Check abs with
 272         non-reduced duration.
 273
 274 2022-08-23  Patrick Palka  <ppalka@redhat.com>
 275
 276         * include/bits/stl_bvector.h (_Bit_reference::operator=): Define
 277         const overload for C++23 as per P2321R2.
 278         * include/bits/stl_pair.h (pair::swap): Likewise.
 279         (pair::pair): Define additional converting constructors for
 280         C++23 as per P2321R2.
 281         (pair::operator=): Define const overloads for C++23 as per
 282         P2321R2.
 283         (swap): Define overload taking const pair& for C++23 as per
 284         P2321R2.
 285         (basic_common_reference): Define partial specialization for
 286         pair for C++23 as per P2321R2.
 287         (common_type): Likewise.
 288         * include/bits/uses_allocator_args.h
 289         (uses_allocator_construction_args): Define additional pair
 290         overloads for C++23 as per P2321R2.
 291         * include/std/tuple (_Tuple_impl::_Tuple_impl): Define
 292         additional converting constructors for C++23 as per P2321R2.
 293         (_Tuple_impl::_M_assign): Define const overloads for C++23
 294         as per P2321R2.
 295         (_Tuple_impl::_M_swap): Likewise.
 296         (tuple::__constructible): Define as a convenient renaming of
 297         _TCC<true>::__constructible.
 298         (tuple::__convertible): As above but for _TCC<true>::__convertible.
 299         (tuple::tuple): Define additional converting constructors for
 300         C++23 as per P2321R2.
 301         (tuple::operator=): Define const overloads for C++23 as per
 302         P2321R2.
 303         (tuple::swap): Likewise.
 304         (basic_common_reference): Define partial specialization for
 305         tuple for C++23 as per P2321R2.
 306         (common_type): Likewise.
 307         * testsuite/20_util/pair/p2321r2.cc: New test.
 308         * testsuite/20_util/tuple/p2321r2.cc: New test.
 309         * testsuite/23_containers/vector/bool/element_access/1.cc: New test.
 310
 311 2022-08-23  Patrick Palka  <ppalka@redhat.com>
 312
 313         * include/std/tuple (_TupleConstraints::__convertible): Define.
 314         (_TupleConstraints::__constructible): Define.
 315         (_TupleConstraints::__is_explicitly_constructible): Redefine this
 316         in terms of __convertible and __constructible.
 317         (_TupleConstraints::__is_implicitly_constructible): Likewise.
 318
 319 2022-08-23  Jonathan Wakely  <jwakely@redhat.com>
 320
 321         PR libstdc++/106589
 322         * include/std/variant (__do_visit): Handle is_void<R> for zero
 323         argument case.
 324         * testsuite/20_util/variant/visit_r.cc: Check std::visit<void>(v).
 325
 326 2022-08-22  Jonathan Wakely  <jwakely@redhat.com>
 327
 328         PR libstdc++/105678
 329         * doc/xml/manual/using.xml: Document -lstdc++_libbacktrace
 330         requirement for using std::stacktrace. Also adjust -frtti and
 331         -fexceptions to document non-default (i.e. negative) forms.
 332         * doc/html/*: Regenerate.
 333
 334 2022-08-22  Jonathan Wakely  <jwakely@redhat.com>
 335
 336         PR libstdc++/106695
 337         * include/bits/std_thread.h (thread::_State_impl): Forward
 338         individual arguments to _Invoker constructor.
 339         (thread::_Invoker): Add constructor. Delete copies.
 340         * include/std/future (__future_base::_Deferred_state): Forward
 341         individual arguments to _Invoker constructor.
 342         (__future_base::_Async_state_impl): Likewise.
 343         * testsuite/30_threads/async/106695.cc: New test.
 344         * testsuite/30_threads/thread/106695.cc: New test.
 345
 346 2022-08-22  Jonathan Wakely  <jwakely@redhat.com>
 347
 348         PR libstdc++/106607
 349         * include/bits/regex_compiler.tcc (_Compiler::_M_cur_int_value):
 350         Use built-ins to check for integer overflow in back-reference
 351         number.
 352         * testsuite/28_regex/basic_regex/106607.cc: New test.
 353
 354 2022-08-17  Keef Aragon  <keef.aragon@konscious.net>
 355
 356         * libsupc++/eh_alloc.cc (pool::free): Inverse comparison.
 357
 358 2022-08-08  François Dumont  <fdumont@gcc.gnu.org>
 359
 360         * include/debug/formatter.h (__singular_value_init): New _Iterator_state enum entry.
 361         (_Parameter<>(const _Safe_iterator<>&, const char*, _Is_iterator)): Check if iterator
 362         parameter is value-initialized.
 363         (_Parameter<>(const _Safe_local_iterator<>&, const char*, _Is_iterator)): Likewise.
 364         * include/debug/safe_iterator.h (_Safe_iterator<>::_M_value_initialized()): New. Adapt
 365         checks.
 366         * include/debug/safe_local_iterator.h (_Safe_local_iterator<>::_M_value_initialized()): New.
 367         Adapt checks.
 368         * src/c++11/debug.cc (_Safe_iterator_base::_M_reset): Do not reset _M_version.
 369         (print_field(PrintContext&, const _Parameter&, const char*)): Adapt state_names.
 370         * testsuite/23_containers/deque/debug/iterator1_neg.cc: New test.
 371         * testsuite/23_containers/deque/debug/iterator2_neg.cc: New test.
 372         * testsuite/23_containers/forward_list/debug/iterator1_neg.cc: New test.
 373         * testsuite/23_containers/forward_list/debug/iterator2_neg.cc: New test.
 374         * testsuite/23_containers/forward_list/debug/iterator3_neg.cc: New test.
 375
 376 2022-08-05  Jonathan Wakely  <jwakely@redhat.com>
 377
 378         * include/experimental/scope (__cpp_lib_experimental_scope):
 379         Define.
 380         * testsuite/experimental/scopeguard/uniqueres.cc: Check macro.
 381
 382 2022-08-05  Jonathan Wakely  <jwakely@redhat.com>
 383
 384         * include/Makefile.am: Add new header.
 385         * include/Makefile.in: Regenerate.
 386         * include/experimental/scope: New file.
 387         * testsuite/experimental/scopeguard/uniqueres.cc: New test.
 388         * testsuite/experimental/scopeguard/exit.cc: New test.
 389
 390 2022-08-04  Jonathan Wakely  <jwakely@redhat.com>
 391
 392         * include/std/string_view (basic_string_view(Range&&)): Add
 393         explicit as per P2499R0.
 394         * testsuite/21_strings/basic_string_view/cons/char/range_c++20.cc:
 395         Adjust implicit conversions. Check implicit conversions fail.
 396         * testsuite/21_strings/basic_string_view/cons/wchar_t/range_c++20.cc:
 397         Likewise.
 398
 399 2022-08-04  Jonathan Wakely  <jwakely@redhat.com>
 400
 401         * include/bits/fs_dir.h (directory_iterator): Add comparison
 402         with std::default_sentinel_t. Remove redundant operator!= for
 403         C++20.
 404         * (recursive_directory_iterator): Likewise.
 405         * include/bits/iterator_concepts.h [!__cpp_lib_concepts]
 406         (default_sentinel_t, default_sentinel): Define even if concepts
 407         are not supported.
 408         * include/bits/regex.h (regex_iterator): Add comparison with
 409         std::default_sentinel_t. Remove redundant operator!= for C++20.
 410         (regex_token_iterator): Likewise.
 411         (regex_token_iterator::_M_end_of_seq()): Add noexcept.
 412         * testsuite/27_io/filesystem/iterators/lwg3719.cc: New test.
 413         * testsuite/28_regex/iterators/regex_iterator/lwg3719.cc:
 414         New test.
 415         * testsuite/28_regex/iterators/regex_token_iterator/lwg3719.cc:
 416         New test.
 417
 418 2022-08-04  Jonathan Wakely  <jwakely@redhat.com>
 419
 420         * include/std/expected (unexpected::_M_val): Rename to _M_unex.
 421         (bad_expected_access::_M_val): Likewise.
 422
 423 2022-08-04  Jonathan Wakely  <jwakely@redhat.com>
 424
 425         * include/bits/ios_base.h (__cpp_lib_ios_noreplace): Update
 426         value to 202207L.
 427         * include/std/version (__cpp_lib_ios_noreplace): Likewise.
 428         * testsuite/27_io/basic_ofstream/open/char/noreplace.cc: Check
 429         for new value.
 430         * testsuite/27_io/basic_ofstream/open/wchar_t/noreplace.cc:
 431         Likewise.
 432
 433 2022-08-04  Jonathan Wakely  <jwakely@redhat.com>
 434
 435         PR libstdc++/106183
 436         * include/bits/atomic_wait.h (__waiter_pool_base::_M_notify):
 437         Move increment of _M_ver here.
 438         [!_GLIBCXX_HAVE_PLATFORM_WAIT]: Lock mutex around increment.
 439         Use relaxed memory order and always notify all waiters.
 440         (__waiter_base::_M_do_wait) [!_GLIBCXX_HAVE_PLATFORM_WAIT]:
 441         Check value again after locking mutex.
 442         (__waiter_base::_M_notify): Remove increment of _M_ver.
 443
 444 2022-08-04  Ulrich Drepper  <drepper@gmail.com>
 445
 446         * python/libstdcxx/v6/printers.py (class StdTuplePrinter): Use
 447         zero-based indeces just like std:get takes.
 448
 449 2022-07-29  Jonathan Wakely  <jwakely@redhat.com>
 450
 451         PR libstdc++/104443
 452         * include/bits/stl_iterator.h (common_iterator::operator->):
 453         Change return type to just auto.
 454
 455 2022-07-26  Thomas Rodgers  <trodgers@redhat.com>
 456
 457         * include/bits/atomic_wait.h (__atomic_spin): Merge spin loops.
 458
 459 2022-07-20  Jonathan Wakely  <jwakely@redhat.com>
 460
 461         PR libstdc++/100823
 462         * include/bits/stl_iterator.h (common_iterator): Define
 463         destructor, copy constructor and move constructor as trivial
 464         when the underlying types allow.
 465         * testsuite/24_iterators/common_iterator/100823.cc: Check
 466         triviality of special members.
 467
 468 2022-07-20  Jonathan Wakely  <jwakely@redhat.com>
 469
 470         PR libstdc++/100823
 471         * include/bits/stl_iterator.h (common_iterator): Define move
 472         constructor and move assignment operator.
 473         (common_iterator::_M_assign): New function implementing
 474         assignment.
 475         (common_iterator::operator=): Use _M_assign.
 476         (common_iterator::_S_valueless): New constant.
 477         * testsuite/24_iterators/common_iterator/100823.cc: New test.
 478
 479 2022-07-20  Jonathan Wakely  <jwakely@redhat.com>
 480
 481         * include/bits/stl_iterator.h (common_iterator): Fix incorrect
 482         uses of is_nothrow_assignable_v. Fix inconsistent constraints on
 483         friend declaration. Do not move argument in copy constructor.
 484         * testsuite/24_iterators/common_iterator/1.cc: Check for
 485         noexcept constructibnle/assignable.
 486
 487 2022-07-19  François Dumont  <fdumont@gcc.gnu.org>
 488
 489         * include/debug/debug.h [_GLIBCXX_DEBUG](__glibcxx_requires_string): Define
 490         using _GLIBCXX_DEBUG_PEDASSERT.
 491         [_GLIBCXX_DEBUG](__glibcxx_requires_string_len): Likewise.
 492         * include/debug/macros.h
 493         (__glibcxx_check_string, __glibcxx_check_string_len): Move...
 494         * include/debug/string
 495         (__glibcxx_check_string, __glibcxx_check_string_len): ...here. And define depending
 496         on _GLIBCXX_DEBUG_PEDANTIC no matter if _GLIBCXX_DEBUG is defined.
 497         Add using of std::string find, rfind, find_first_of, find_last_of, find_first_not_of
 498         and find_last_not_of. Remove debug implementations having no debug assertion.
 499         * testsuite/util/testsuite_string.h: New file. Provides __gnu_test::string and
 500         __gnu_test::wtring which definition depends on _GLIBCXX_DEBUG.
 501         * testsuite/21_strings/basic_string/debug/find1_neg.cc: New test case.
 502         * testsuite/21_strings/basic_string/debug/find2_neg.cc: New test case.
 503         * testsuite/21_strings/basic_string/operations/find/char/1.cc:
 504         Include <testsuite_string.h> and use __gnu_test::string.
 505         * testsuite/21_strings/basic_string/operations/find/char/2.cc: Likewise.
 506         * testsuite/21_strings/basic_string/operations/find/char/3.cc: Likewise.
 507         * testsuite/21_strings/basic_string/operations/find/char/4.cc: Likewise.
 508         * testsuite/21_strings/basic_string/operations/find/char/5.cc: Likewise.
 509         * testsuite/21_strings/basic_string/operations/find/char/6.cc: Likewise.
 510         * testsuite/21_strings/basic_string/operations/find/wchar_t/1.cc:
 511         Include <testsuite_string.h> and use __gnu_test::wstring.
 512         * testsuite/21_strings/basic_string/operations/find/wchar_t/2.cc: Likewise.
 513         * testsuite/21_strings/basic_string/operations/find/wchar_t/3.cc: Likewise.
 514         * testsuite/21_strings/basic_string/operations/find/wchar_t/4.cc: Likewise.
 515         * testsuite/21_strings/basic_string/operations/find/wchar_t/5.cc: Likewise.
 516         * testsuite/21_strings/basic_string/operations/find/wchar_t/6.cc: Likewise.
 517
 518 2022-07-19  Jonathan Wakely  <jwakely@redhat.com>
 519
 520         * include/std/type_traits (__cpp_lib_reference_from_temporary)
 521         (reference_constructs_from_temporary)
 522         (reference_converts_from_temporary): Only define when the
 523         built-ins are available.
 524
 525 2022-07-19  Marco Falke  <falke.marco@gmail.com>
 526
 527         * include/std/charconv (__from_chars_alnum_to_val): Replace
 528         implicit conversion from int to unsigned char with explicit
 529         cast.
 530
 531 2022-07-19  Sebastian Huber  <sebastian.huber@embedded-brains.de>
 532
 533         * configure: Regnerate.
 534         * configure.ac (newlib, *-rtems*): Remove HAVE_POLL.
 535
 536 2022-07-18  François Dumont  <fdumont@gcc.gnu.org>
 537
 538         * include/bits/stl_algo.h
 539         (__merge_adaptive): Adapt to merge only when buffer is large enough..
 540         (__merge_adaptive_resize): New, adapt merge when buffer is too small.
 541         (__inplace_merge): Adapt, use latter.
 542         (__stable_sort_adaptive): Adapt to sort only when buffer is large enough.
 543         (__stable_sort_adaptive_resize): New, adapt sort when buffer is too small.
 544         (__stable_sort): Adapt, use latter.
 545
 546 2022-07-15  Marek Polacek  <polacek@redhat.com>
 547
 548         PR c++/104477
 549         * include/std/type_traits (reference_constructs_from_temporary,
 550         reference_converts_from_temporary): New class templates.
 551         (reference_constructs_from_temporary_v,
 552         reference_converts_from_temporary_v): New variable templates.
 553         (__cpp_lib_reference_from_temporary): Define for C++23.
 554         * include/std/version (__cpp_lib_reference_from_temporary): Define for
 555         C++23.
 556         * testsuite/20_util/variable_templates_for_traits.cc: Test
 557         reference_constructs_from_temporary_v and
 558         reference_converts_from_temporary_v.
 559         * testsuite/20_util/reference_from_temporary/value.cc: New test.
 560         * testsuite/20_util/reference_from_temporary/value2.cc: New test.
 561         * testsuite/20_util/reference_from_temporary/version.cc: New test.
 562
 563 2022-07-12  Jonathan Wakely  <jwakely@redhat.com>
 564
 565         PR libstdc++/106248
 566         * include/std/istream [C++17] (operator>>(istream&, char*)):
 567         Set eofbit if we stopped extracting at EOF.
 568         * testsuite/27_io/basic_istream/extractors_character/char/pr106248.cc:
 569         New test.
 570         * testsuite/27_io/basic_istream/extractors_character/wchar_t/pr106248.cc:
 571         New test.
 572
 573 2022-07-12  Jonathan Wakely  <jwakely@redhat.com>
 574
 575         * include/bits/stl_iterator.h (__iter_to_alloc_t): Replace
 576         add_const_t with const-qualifier.
 577         * include/bits/utility.h (tuple_element<N, cv T>): Likewise for
 578         all cv-qualifiers.
 579         * include/std/type_traits (add_const, add_volatile): Replace
 580         typedef-declaration with using-declaration.
 581         (add_cv): Replace add_const and add_volatile with cv-qualifiers.
 582         * include/std/variant (variant_alternative<N, cv T>): Replace
 583         add_const_t, add_volatile_t and add_cv_t etc. with cv-qualifiers.
 584
 585 2022-07-09  François Dumont  <fdumont@gcc.gnu.org>
 586
 587         * include/std/string: Remove obsolete comment about char_traits.h including
 588         stl_algobase.h.
 589
 590 2022-07-07  Jonathan Wakely  <jwakely@redhat.com>
 591
 592         PR c++/89074
 593         * include/bits/char_traits.h (__gnu_cxx::char_traits::move):
 594         Remove workaround for front-end bug.
 595
 596 2022-07-05  Alexandre Oliva  <oliva@adacore.com>
 597
 598         * testsuite/util/testsuite_fs.h (nonexistent_path): Explain
 599         why we need the typecast.
 600
 601 2022-07-05  Alexandre Oliva  <oliva@adacore.com>
 602
 603         * testsuite/util/testsuite_fs.h (nonexistent_path): Convert
 604         the getpid result to an integral type.
 605
 606 2022-07-01  Jonathan Wakely  <jwakely@redhat.com>
 607
 608         PR libstdc++/106162
 609         * include/Makefile.am (largefile-config.h): Add
 610         stamp-${host_alias} prerequisite.
 611         * include/Makefile.in: Regenerate.
 612
 613 2022-07-01  Jonathan Wakely  <jwakely@redhat.com>
 614
 615         * include/bits/fs_ops.h: Add nodiscard to all pure functions.
 616         * include/experimental/bits/fs_ops.h: Likewise.
 617         * testsuite/27_io/filesystem/operations/all.cc: Do not discard
 618         results of absolute and canonical.
 619         * testsuite/27_io/filesystem/operations/absolute.cc: Cast
 620         discarded result to void.
 621         * testsuite/27_io/filesystem/operations/canonical.cc: Likewise.
 622         * testsuite/27_io/filesystem/operations/exists.cc: Likewise.
 623         * testsuite/27_io/filesystem/operations/is_empty.cc: Likewise.
 624         * testsuite/27_io/filesystem/operations/read_symlink.cc:
 625         Likewise.
 626         * testsuite/27_io/filesystem/operations/status.cc: Likewise.
 627         * testsuite/27_io/filesystem/operations/symlink_status.cc:
 628         Likewise.
 629         * testsuite/27_io/filesystem/operations/temp_directory_path.cc:
 630         Likewise.
 631         * testsuite/experimental/filesystem/operations/canonical.cc:
 632         Likewise.
 633         * testsuite/experimental/filesystem/operations/exists.cc:
 634         Likewise.
 635         * testsuite/experimental/filesystem/operations/is_empty.cc:
 636         Likewise.
 637         * testsuite/experimental/filesystem/operations/read_symlink.cc:
 638         Likewise.
 639         * testsuite/experimental/filesystem/operations/temp_directory_path.cc:
 640         Likewise.
 641
 642 2022-07-01  Sebastian Huber  <sebastian.huber@embedded-brains.de>
 643
 644         * configure: Regnerate.
 645         * configure.ac (newlib, *-rtems*): Enable TLS support for all RTEMS
 646         targets except bfin, lm32, mips, moxie, or1k, and v850.
 647         For all RTEMS targets, define HAVE_ALIGNED_ALLOC, HAVE_AT_QUICK_EXIT,
 648         HAVE_LINK, HAVE_POLL, HAVE_QUICK_EXIT, HAVE_READLINK, HAVE_SETENV,
 649         HAVE_SLEEP, HAVE_SOCKATMARK, HAVE_STRERROR_L, HAVE_SYMLINK,
 650         HAVE_TRUNCATE, and HAVE_USLEEP.
 651         * crossconfig.m4 (*-rtems*): Remove.
 652
 653 2022-06-30  Jonathan Wakely  <jwakely@redhat.com>
 654
 655         * include/bits/utility.h: Fix comment typos.
 656
 657 2022-06-30  Jonathan Wakely  <jwakely@redhat.com>
 658
 659         * src/c++17/fs_ops.cc (fs::temp_directory_path()): Include path
 660         in exception.
 661         (fs::temp_directory_path(error_code&)): Rearrange to more
 662         closely match the structure of the first overload.
 663         * src/filesystem/ops.cc (fs::temp_directory_path): Likewise.
 664         * testsuite/27_io/filesystem/operations/temp_directory_path.cc:
 665         Check that exception contains the path.
 666         * testsuite/experimental/filesystem/operations/temp_directory_path.cc:
 667         Likewise.
 668
 669 2022-06-30  Jonathan Wakely  <jwakely@redhat.com>
 670
 671         PR libstdc++/88881
 672         * src/filesystem/ops.cc (has_trailing_slash): New helper
 673         function.
 674         (fs::status): Strip trailing slashes.
 675         (fs::symlink_status): Likewise.
 676         * testsuite/experimental/filesystem/operations/temp_directory_path.cc:
 677         Clean the environment before each test and use TMP instead of
 678         TMPDIR so the test passes on Windows.
 679
 680 2022-06-28  Jonathan Wakely  <jwakely@redhat.com>
 681
 682         * src/filesystem/dir-common.h (_Dir_base::_At_path):
 683         Use char_type consistently for paths.
 684
 685 2022-06-28  Jonathan Wakely  <jwakely@redhat.com>
 686
 687         * src/c++17/fs_dir.cc (_Dir::dir_and_pathname):: Replace with
 688         current() returning _At_path.
 689         (_Dir::_Dir, _Dir::open_subdir, _Dir::do_unlink): Adjust.
 690         * src/filesystem/dir-common.h (_Dir_base::_At_path): New class.
 691         (_Dir_base::_Dir_Base, _Dir_base::openat): Use _At_path.
 692         * src/filesystem/dir.cc (_Dir::dir_and_pathname): Replace with
 693         current() returning _At_path.
 694         (_Dir::_Dir, _Dir::open_subdir): Adjust.
 695
 696 2022-06-28  Jonathan Wakely  <jwakely@redhat.com>
 697
 698         * src/c++17/fs_dir.cc (_Dir::_Dir) [!_GLIBCXX_HAVE_OPENAT]:
 699         Always store pathname if we don't have openat or unlinkat,
 700         because the full path is needed to open sub-directories and
 701         remove entries.
 702
 703 2022-06-28  Jonathan Wakely  <jwakely@redhat.com>
 704
 705         * testsuite/20_util/from_chars/4.cc: Only use log2 if C99 math
 706         functions are available.
 707
 708 2022-06-27  Alexandre Oliva  <oliva@adacore.com>
 709
 710         * testsuite/20_util/to_chars/long_double.cc: Use cmath
 711         long double overloads for nexttoward and ldexp.
 712
 713 2022-06-27  Alexandre Oliva  <oliva@adacore.com>
 714
 715         * testsuite/experimental/simd/standard_abi_usable.cc: Require
 716         cmath support.
 717         * testsuite/experimental/simd/standard_abi_usable_2.cc:
 718         Likewise.
 719
 720 2022-06-27  Alexandre Oliva  <oliva@adacore.com>
 721
 722         * testsuite/26_numerics/complex/proj.cc: Skip test in the
 723         circumstances in which the implementation of proj is known to
 724         be broken.
 725
 726 2022-06-27  Alexandre Oliva  <oliva@adacore.com>
 727
 728         * src/c++17/fs_dir.cc (dir_and_pathname): Use dirfd if
 729         _GLIBCXX_HAVE_OPENAT.
 730
 731 2022-06-27  Alexandre Oliva  <oliva@adacore.com>
 732
 733         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc
 734         (test06): Don't create symlinks when NO_SYMLINKS is defined.
 735
 736 2022-06-27  Alexandre Oliva  <oliva@adacore.com>
 737
 738         * testsuite/lib/dg-options.exp (add_options_for_net_ts):
 739         Add -Wl,--gc-sections for RTEMS targets.
 740         * testsuite/experimental/net/timer/waitable/dest.cc: Link-time
 741         xfail on RTEMS.
 742         * testsuite/experimental/net/timer/waitable/ops.cc: Likewise.
 743         * testsuite/experimental/net/internet/resolver/ops/lookup.cc:
 744         Execution-time xfail on RTEMS.
 745         * testsuite/experimental/net/internet/resolver/ops/reverse.cc:
 746         Likewise.
 747
 748 2022-06-27  Jonathan Wakely  <jwakely@redhat.com>
 749
 750         * testsuite/ext/mt_allocator/22309_thread.cc: Include <string>.
 751
 752 2022-06-27  Joel Brobecker  <brobecker@adacore.com>
 753             Jonathan Wakely  <jwakely@redhat.com>
 754
 755         * testsuite/util/testsuite_fs.h (__gnu_test::nonexistent_path):
 756         Always include a counter in the filename returned.
 757
 758 2022-06-27  Jonathan Wakely  <jwakely@redhat.com>
 759
 760         * include/bits/move_only_function.h (_Never_valueless_alt):
 761         Define partial specialization for std::move_only_function.
 762
 763 2022-06-27  Jonathan Wakely  <jwakely@redhat.com>
 764
 765         * include/std/variant (_Build_FUN::_S_fun): Define fallback case
 766         as deleted.
 767         (__accepted_index, _Extra_visit_slot_needed): Replace class
 768         templates with variable templates.
 769
 770 2022-06-27  Jonathan Wakely  <jwakely@redhat.com>
 771
 772         * include/bits/fs_path.h (__is_path_iter_src): Replace class
 773         template with variable template.
 774
 775 2022-06-27  Jonathan Wakely  <jwakely@redhat.com>
 776
 777         * include/bits/chrono.h (is_clock_v): Define to false.
 778         (is_clock_v<T>): Define partial specialization for true cases.
 779         (is_clock): Define in terms of is_clock_v.
 780
 781 2022-06-24  Xi Ruoyao  <xry111@xry111.site>
 782
 783         * scripts/extract_symvers.in: Use grep -E instead of egrep.
 784         * scripts/run_doxygen: Likewise.
 785
 786 2022-06-24  Alexandre Oliva  <oliva@adacore.com>
 787
 788         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for
 789         openat.
 790         * configure, config.h.in: Rebuilt.
 791         * src/filesystem/dir-common.h (openat): Use ::openat if
 792         _GLIBCXX_HAVE_OPENAT.
 793         * src/filesystem/dir.cc (dir_and_pathname): Use dirfd if
 794         _GLIBCXX_HAVE_OPENAT.
 795
 796 2022-06-24  Alexandre Oliva  <oliva@adacore.com>
 797
 798         * testsuite/27_io/filesystem/operations/rename.cc: xfail on
 799         rtems.
 800         * testsuite/experimental/filesystem/operations/rename.cc:
 801         Likewise.
 802
 803 2022-06-24  Alexandre Oliva  <oliva@adacore.com>
 804
 805         * testsuite/util/testsuite_fs.h (NO_LAST_WRITE_TIME): Define
 806         when appropriate.
 807         * testsuite/lib/libstdc++.exp
 808         (check_v3_target_fs_last_write_time): New.
 809         * testsuite/lib/dg-options.exp (dg-require-target-fs-lwt):
 810         New.
 811         * testsuite/27_io/filesystem/operations/last_write_time.cc:
 812         Skip the test if the features are unavailable.
 813         * testsuite/experimental/filesystem/operations/last_write_time.cc:
 814         Likewise.
 815
 816 2022-06-24  Alexandre Oliva  <oliva@adacore.com>
 817
 818         * testsuite/util/testsuite_fs.h (NO_SPACE): Define if
 819         appropriate.
 820         * testsuite/lib/libstdc++.exp (check_v3_target_fs_space): New.
 821         * testsuite/lib/dg-options.exp (dg-require-target-fs-space):
 822         New.
 823         * testsuite/27_io/filesystem/operations/space.cc: Require
 824         target-fs-space.
 825         * testsuite/experimental/filesystem/operations/space.cc:
 826         Likewise.
 827
 828 2022-06-24  Alexandre Oliva  <oliva@adacore.com>
 829
 830         * testsuite/util/testsuite_fs.h (NO_SYMLINKS): Define on
 831         mingw and when create_symlink is a dummy.
 832         * testsuite/27_io/filesystem/operations/symlink_status.cc:
 833         Drop mingw xfail.
 834         (test01, test02): Don't create symlinks when NO_SYMLINKS is
 835         defined.
 836         * testsuite/27_io/filesystem/operations/canonical.cc (test03):
 837         Likewise.
 838         * testsuite/27_io/filesystem/operations/copy.cc (test02):
 839         Likewise.
 840         * testsuite/27_io/filesystem/operations/create_directories.cc
 841         (test04): Likewise.
 842         * testsuite/27_io/filesystem/operations/create_directory.cc
 843         (test01): Likewise.
 844         * testsuite/27_io/filesystem/operations/permissions.cc
 845         (test03, test04): Likewise.
 846         * testsuite/27_io/filesystem/operations/remove.cc (test01):
 847         Likewise.
 848         * testsuite/27_io/filesystem/operations/remove_all.cc (test01):
 849         Likewise.
 850         * testsuite/27_io/filesystem/operations/rename.cc
 851         (test_symlinks): Likewise.
 852         * testsuite/27_io/filesystem/operations/weakly_canonical.cc
 853         (test01): Likewise.
 854         * testsuite/experimental/filesystem/iterators/recursive_directory_iterator.cc
 855         (test06): Likewise.
 856         * testsuite/experimental/filesystem/operations/copy.cc
 857         (test01): Likewise.
 858         * testsuite/experimental/filesystem/operations/create_directories.cc
 859         (test04): Likewise.
 860         * testsuite/experimental/filesystem/operations/create_directory.cc
 861         (test01): Likewise.
 862         * testsuite/experimental/filesystem/operations/permissions.cc
 863         (test03, test04): Likewise.
 864         * testsuite/experimental/filesystem/operations/remove.cc
 865         (test01): Likewise.
 866         * testsuite/experimental/filesystem/operations/remove_all.cc
 867         (test01): Likewise.
 868         * testsuite/experimental/filesystem/operations/rename.cc
 869         (test01): Likewise.
 870         * testsuite/lib/libstdc++.exp
 871         (v3_check_preprocessor_condition): Add optional inc parameter.
 872         Add it to the test program after include bits/c++config.h.
 873         (check_v3_target_fs_symlinks): New.
 874         * testsuite/lib/dg-options.exp
 875         (dg-require-target-fs-symlinks): New.
 876         * testsuite/27_io/filesystem/operations/read_symlink.cc:
 877         Replace mingw xfail with require target-fs-symlinks.
 878         * testsuite/experimental/filesystem/operations/read_symlink.cc:
 879         Likewise.
 880
 881 2022-06-24  Alexandre Oliva  <oliva@adacore.com>
 882
 883         * testsuite/27_io/filesystem/operations/copy.cc (test02):
 884         Select TO after creating FROM.
 885         (test03, test04): Likewise.
 886         * testsuite/experimental/filesystem/operations/copy.cc
 887         (test02, test03, test04): Likewise.
 888
 889 2022-06-24  Alexandre Oliva  <oliva@adacore.com>
 890
 891         * testsuite/30_threads/thread/native_handle/cancel.cc: Add an
 892         explicit cancellation point in case sleep_for lacks one.
 893
 894 2022-06-24  Alexandre Oliva  <oliva@adacore.com>
 895
 896         * testsuite/lib/dg-options.exp (add_options_for_net_ts): Add
 897         -lbsd for RTEMS targets.
 898
 899 2022-06-23  Jonathan Wakely  <jwakely@redhat.com>
 900
 901         * testsuite/27_io/filesystem/iterators/error_reporting.cc: Use
 902         rmdir to remove directories.
 903         * testsuite/experimental/filesystem/iterators/error_reporting.cc:
 904         Likewise.
 905
 906 2022-06-23  Jonathan Wakely  <jwakely@redhat.com>
 907
 908         * testsuite/26_numerics/random/random_device/entropy.cc: Use
 909         numeric_limits<unsigned>::digits.
 910
 911 2022-06-22  Alexandre Oliva  <oliva@adacore.com>
 912
 913         * libsupc++/eh_globals.cc [!_GLIBCXX_HAVE_TLS]
 914         (__eh_globals_init::~__eh_globals_init): Clear _S_init first.
 915
 916 2022-06-22  Alexandre Oliva  <oliva@adacore.com>
 917
 918         * testsuite/30_threads/this_thread/60421.cc (test02): Call
 919         sched_yield.
 920
 921 2022-06-22  Alexandre Oliva  <oliva@adacore.com>
 922
 923         * testsuite/20_util/to_chars/long_double.cc: Require cmath.
 924
 925 2022-06-22  Alexandre Oliva  <oliva@adacore.com>
 926
 927         * testsuite/23_containers/bitset/cons/dr1325-2.cc: Work around
 928         global struct bitset.
 929         * testsuite/23_containers/bitset/ext/15361.cc: Likewise.
 930         * testsuite/23_containers/bitset/input/1.cc: Likewise.
 931         * testsuite/23_containers/bitset/to_string/1.cc: Likewise.
 932         * testsuite/23_containers/bitset/to_string/dr396.cc: Likewise.
 933
 934 2022-06-17  Jonathan Wakely  <jwakely@redhat.com>
 935
 936         * testsuite/21_strings/basic_string/cons/char/105995.cc: Add
 937         missing #include.
 938
 939 2022-06-16  Jonathan Wakely  <jwakely@redhat.com>
 940
 941         PR libstdc++/105995
 942         * include/bits/basic_string.h (_M_use_local_data): Initialize
 943         the entire SSO buffer.
 944         * testsuite/21_strings/basic_string/cons/char/105995.cc: New test.
 945
 946 2022-06-16  Jonathan Wakely  <jwakely@redhat.com>
 947
 948         PR libstdc++/101482
 949         * include/ext/vstring.h (operator==): Always check lengths
 950         before comparing.
 951
 952 2022-06-15  François Dumont  <fdumont@gcc.gnu.org>
 953
 954         PR libstdc++/105717
 955         * include/bits/hashtable_policy.h (_ConvertToValueType): New.
 956         * include/bits/hashtable.h (_Hashtable<>::_M_insert_unique_aux): New.
 957         (_Hashtable<>::_M_insert(_Arg&&, const _NodeGenerator&, true_type)): Use latters.
 958         (_Hashtable<>::_M_insert(_Arg&&, const _NodeGenerator&, false_type)): Likewise.
 959         (_Hashtable(_InputIterator, _InputIterator, size_type, const _Hash&, const _Equal&,
 960         const allocator_type&, true_type)): Use this.insert range.
 961         (_Hashtable(_InputIterator, _InputIterator, size_type, const _Hash&, const _Equal&,
 962         const allocator_type&, false_type)): Use _M_insert.
 963         * testsuite/23_containers/unordered_map/cons/56112.cc: Check how many times conversion
 964         is done.
 965         * testsuite/23_containers/unordered_map/insert/105717.cc: New test.
 966         * testsuite/23_containers/unordered_set/insert/105717.cc: New test.
 967
 968 2022-06-14  Jonathan Wakely  <jwakely@redhat.com>
 969
 970         PR libstdc++/62187
 971         * include/bits/basic_string.h (operator==): Always compare
 972         lengths before checking string contents.
 973         [!__cpp_lib_three_way_comparison] (operator==, operator!=):
 974         Reorder arguments.
 975
 976 2022-06-14  Jonathan Wakely  <jwakely@redhat.com>
 977
 978         PR libstdc++/59048
 979         * include/bits/basic_string.h (compare): Define inline.
 980         * include/bits/basic_string.tcc (compare): Remove out-of-line
 981         definitions.
 982         * include/bits/cow_string.h (compare): Define inline.
 983         * testsuite/21_strings/basic_string/operations/compare/char/3.cc:
 984         New test.
 985
 986 2022-06-14  Jonathan Wakely  <jwakely@redhat.com>
 987
 988         * include/bits/new_allocator.h: Fix indentation.
 989         * include/ext/malloc_allocator.h: Likewise.
 990
 991 2022-06-14  Jonathan Wakely  <jwakely@redhat.com>
 992
 993         PR libstdc++/105957
 994         * include/bits/allocator.h (allocator::allocate): Check for
 995         overflow in constexpr allocation.
 996         * testsuite/20_util/allocator/105975.cc: New test.
 997
 998 2022-06-13  Mark Mentovai  <mark@mentovai.com>
 999
1000         * include/experimental/bits/fs_path.h (__detail::__null_terminated):
1001         Rename to __nul_terminated to avoid colliding with a macro in
1002         Apple's SDK.
1003
1004 2022-06-13  Jonathan Wakely  <jwakely@redhat.com>
1005
1006         * include/std/atomic (__atomic_val_t): Use __type_identity_t
1007         instead of atomic<T>::value_type, as per LWG 3220.
1008         * testsuite/29_atomics/atomic/lwg3220.cc: New test.
1009
1010 2022-06-10  Jonathan Wakely  <jwakely@redhat.com>
1011
1012         PR libstdc++/105844
1013         * include/experimental/numeric (experimental::gcd): Simplify
1014         assertions. Use __abs_r instead of __absu.
1015         (experimental::lcm): Likewise. Remove use of __detail::__lcm so
1016         overflow can be detected.
1017         * include/std/numeric (__detail::__absu): Rename to __abs_r and
1018         change to allow signed result type, so overflow can be detected.
1019         (__detail::__lcm): Remove.
1020         (gcd): Simplify assertions. Use __abs_r instead of __absu.
1021         (lcm): Likewise. Remove use of __detail::__lcm so overflow can
1022         be detected.
1023         * testsuite/26_numerics/gcd/gcd_neg.cc: Adjust dg-error lines.
1024         * testsuite/26_numerics/lcm/lcm_neg.cc: Likewise.
1025         * testsuite/26_numerics/gcd/105844.cc: New test.
1026         * testsuite/26_numerics/lcm/105844.cc: New test.
1027
1028 2022-06-10  Jonathan Wakely  <jwakely@redhat.com>
1029
1030         PR libstdc++/105880
1031         * libsupc++/eh_globals.cc (eh_globals): Ensure constant init and
1032         prevent destruction during termination.
1033         (__eh_globals_init::_M_init): Replace with static member _S_init.
1034         (__cxxabiv1::__cxa_get_globals_fast): Update.
1035         (__cxxabiv1::__cxa_get_globals): Likewise.
1036
1037 2022-06-10  Jonathan Wakely  <jwakely@redhat.com>
1038
1039         * include/bits/basic_string.h (__hash_str_base): New class
1040         template.
1041         (hash<basic_string<C, char_traits<C>, A>>): Define partial
1042         specialization for each of the standard character types.
1043         (hash<string>, hash<wstring>, hash<u8string>, hash<u16string>)
1044         (hash<u32string>): Remove explicit specializations.
1045         * include/std/string (__hash_string_base): Remove class
1046         template.
1047         (hash<pmr::string>, hash<pmr::wstring>, hash<pmr::u8string>)
1048         (hash<pmr::u16string>, hash<pmr::u32string>): Remove explicit
1049         specializations.
1050         * testsuite/21_strings/basic_string/hash/hash.cc: Test with
1051         custom allocators.
1052         * testsuite/21_strings/basic_string/hash/hash_char8_t.cc:
1053         Likewise.
1054
1055 2022-05-27  Jonathan Wakely  <jwakely@redhat.com>
1056
1057         PR libstdc++/105671
1058         * include/std/sstream (basic_stringbuf::_M_high_mark): Add
1059         always_inline attribute.
1060
1061 2022-05-26  Jonathan Wakely  <jwakely@redhat.com>
1062
1063         PR libstdc++/105681
1064         * include/ext/pb_ds/detail/resize_policy/hash_prime_size_policy_imp.hpp:
1065         Limit ga_sizes array to values that fit in size_t.
1066         * include/ext/random [__SIZE_WIDTH < 32] (sfmt86243)
1067         (sfmt86243_64, sfmt132049, sfmt132049_64, sfmt216091)
1068         (sfmt216091_64): Do not declare.
1069
1070 2022-05-26  Jonathan Wakely  <jwakely@redhat.com>
1071
1072         * python/libstdcxx/v6/printers.py (StdErrorCodePrinter): Make
1073         lookup for ios_errc and future_errc check versioned namespace.
1074         (StdAtomicPrinter): Strip versioned namespace from typename.
1075
1076 2022-05-26  Jonathan Wakely  <jwakely@redhat.com>
1077
1078         * src/c++11/Makefile.am: Add new source file.
1079         * src/c++11/Makefile.in: Regenerate.
1080         * src/c++11/cxx11-ios_failure.cc (iostream_category):
1081         Move to ...
1082         * src/c++11/ios_errcat.cc: New file.
1083         * testsuite/27_io/ios_base/failure/error_code.cc: Check that
1084         std::iostream_category() is defined and used for std::io_errc.
1085
1086 2022-05-26  Jonathan Wakely  <jwakely@redhat.com>
1087
1088         * include/bits/stl_iterator.h (counted_iterator::operator++(int)):
1089         Add 'constexpr' as per LWG 3643.
1090         * testsuite/24_iterators/counted_iterator/lwg3643.cc: New test.
1091
1092 2022-05-26  Jonathan Wakely  <jwakely@redhat.com>
1093
1094         * include/bits/functional_hash.h (__is_fast_hash): Add doxygen
1095         comment.
1096         * include/bits/hashtable.h: Do not include <bits/stl_function.h>
1097         here.
1098         * include/bits/hashtable_policy.h: Include <bits/stl_pair.h> and
1099         <bits/functional_hash.h>.
1100         * include/bits/unordered_map.h: Include required headers.
1101         * include/bits/unordered_set.h: Likewise.
1102         * include/std/unordered_map: Do not include headers for indirect
1103         dependencies.
1104         * include/std/unordered_set: Likewise.
1105
1106 2022-05-26  Jonathan Wakely  <jwakely@redhat.com>
1107
1108         * include/bits/ranges_algobase.h: Do not include
1109         <bits/stl_iterator_base_types.h>.
1110         * include/std/string: Likewise.
1111         * include/std/variant: Likewise.
1112
1113 2022-05-26  Nathan Sidwell  <nathan@acm.org>
1114
1115         * include/bits/hashtable.h: Include required headers.
1116         * include/bits/hashtable_policy.h: Likewise.
1117         * include/bits/stl_heap.h: Likewise.
1118         * include/bits/stl_iterator_base_funcs.h: Likewise.
1119
1120 2022-05-26  François Dumont  <fdumont@gcc.gnu.org>
1121
1122         * python/libstdcxx/v6/printers.py (StdSpanPrinter.__init__):
1123         Strip typename from version namespace.
1124
1125 2022-05-26  Jonathan Wakely  <jwakely@redhat.com>
1126
1127         * python/libstdcxx/v6/printers.py (SharedPointerPrinter): Strip
1128         versioned namespace from the template argument too.
1129
1130 2022-05-26  Jonathan Wakely  <jwakely@redhat.com>
1131
1132         * testsuite/21_strings/basic_string/modifiers/pop_back/char/1.cc:
1133         Moved to...
1134         * testsuite/21_strings/basic_string/modifiers/pop_back/char.cc:
1135         ...here.
1136         * testsuite/21_strings/basic_string/modifiers/pop_back/wchar_t/1.cc:
1137         Moved to...
1138         * testsuite/21_strings/basic_string/modifiers/pop_back/wchar_t.cc:
1139         ...here.
1140         * testsuite/21_strings/basic_string/modifiers/swap/wchar_t/constexpr.cc:
1141         Moved to...
1142         * testsuite/21_strings/basic_string/modifiers/swap/constexpr-wchar_t.cc:
1143         ...here.
1144         * testsuite/21_strings/basic_string/modifiers/swap/char/constexpr.cc:
1145         Moved to...
1146         * testsuite/21_strings/basic_string/modifiers/swap/constexpr.cc:
1147         ...here.
1148         * testsuite/21_strings/basic_string/operations/contains/char/1.cc:
1149         Moved to...
1150         * testsuite/21_strings/basic_string/operations/contains/char.cc:
1151         ...here.
1152         * testsuite/21_strings/basic_string/operations/contains/wchar_t/1.cc:
1153         Moved to...
1154         * testsuite/21_strings/basic_string/operations/contains/wchar_t.cc:
1155         ...here.
1156         * testsuite/21_strings/basic_string/operations/data/char/1.cc:
1157         Moved to...
1158         * testsuite/21_strings/basic_string/operations/data/char.cc:
1159         ...here.
1160         * testsuite/21_strings/basic_string/operations/data/wchar_t/1.cc:
1161         Moved to...
1162         * testsuite/21_strings/basic_string/operations/data/wchar_t.cc:
1163         ...here.
1164         * testsuite/21_strings/basic_string/operations/ends_with/char/1.cc:
1165         Moved to...
1166         * testsuite/21_strings/basic_string/operations/ends_with/char.cc:
1167         ...here.
1168         * testsuite/21_strings/basic_string/operations/ends_with/wchar_t/1.cc:
1169         Moved to...
1170         * testsuite/21_strings/basic_string/operations/ends_with/wchar_t.cc:
1171         ...here.
1172         * testsuite/21_strings/basic_string/operations/starts_with/char/1.cc:
1173         Moved to...
1174         * testsuite/21_strings/basic_string/operations/starts_with/char.cc:
1175         ...here.
1176         * testsuite/21_strings/basic_string/operations/starts_with/wchar_t/1.cc:
1177         Moved to...
1178         * testsuite/21_strings/basic_string/operations/starts_with/wchar_t.cc:
1179         ...here.
1180         * testsuite/21_strings/basic_string/operations/substr/char/1.cc:
1181         Moved to...
1182         * testsuite/21_strings/basic_string/operations/substr/char.cc:
1183         ...here.
1184         * testsuite/21_strings/basic_string/operations/substr/wchar_t/1.cc:
1185         Moved to...
1186         * testsuite/21_strings/basic_string/operations/substr/wchar_t.cc:
1187         ...here.
1188         * testsuite/21_strings/basic_string/range_access/char/1.cc:
1189         Moved to...
1190         * testsuite/21_strings/basic_string/range_access/char.cc:
1191         ...here.
1192         * testsuite/21_strings/basic_string/range_access/wchar_t/1.cc:
1193         Moved to...
1194         * testsuite/21_strings/basic_string/range_access/wchar_t.cc:
1195         ...here.
1196         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/char/1.cc:
1197         Moved to...
1198         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/char.cc:
1199         ...here.
1200         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/wchar_t/1.cc:
1201         Moved to...
1202         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/wchar_t.cc:
1203         ...here.
1204         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/char/1.cc:
1205         Moved to...
1206         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/char.cc:
1207         ...here.
1208         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/wchar_t/1.cc:
1209         Moved to...
1210         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/wchar_t.cc:
1211         ...here.
1212         * testsuite/21_strings/basic_string_view/modifiers/swap/char/1.cc:
1213         Moved to...
1214         * testsuite/21_strings/basic_string_view/modifiers/swap/char.cc:
1215         ...here.
1216         * testsuite/21_strings/basic_string_view/modifiers/swap/wchar_t/1.cc:
1217         Moved to...
1218         * testsuite/21_strings/basic_string_view/modifiers/swap/wchar_t.cc:
1219         ...here.
1220         * testsuite/21_strings/basic_string_view/operations/contains/char/1.cc:
1221         Moved to...
1222         * testsuite/21_strings/basic_string_view/operations/contains/char.cc:
1223         ...here.
1224         * testsuite/21_strings/basic_string_view/operations/contains/wchar_t/1.cc:
1225         Moved to...
1226         * testsuite/21_strings/basic_string_view/operations/contains/wchar_t.cc:
1227         ...here.
1228         * testsuite/21_strings/basic_string_view/operations/data/char/1.cc:
1229         Moved to...
1230         * testsuite/21_strings/basic_string_view/operations/data/char.cc:
1231         ...here.
1232         * testsuite/21_strings/basic_string_view/operations/data/wchar_t/1.cc:
1233         Moved to...
1234         * testsuite/21_strings/basic_string_view/operations/data/wchar_t.cc:
1235         ...here.
1236         * testsuite/21_strings/basic_string_view/operations/ends_with/char/1.cc:
1237         Moved to...
1238         * testsuite/21_strings/basic_string_view/operations/ends_with/char.cc:
1239         ...here.
1240         * testsuite/21_strings/basic_string_view/operations/ends_with/wchar_t/1.cc:
1241         Moved to...
1242         * testsuite/21_strings/basic_string_view/operations/ends_with/wchar_t.cc:
1243         ...here.
1244         * testsuite/21_strings/basic_string_view/operations/starts_with/char/1.cc:
1245         Moved to...
1246         * testsuite/21_strings/basic_string_view/operations/starts_with/char.cc:
1247         ...here.
1248         * testsuite/21_strings/basic_string_view/operations/starts_with/wchar_t/1.cc:
1249         Moved to...
1250         * testsuite/21_strings/basic_string_view/operations/starts_with/wchar_t.cc:
1251         ...here.
1252         * testsuite/21_strings/basic_string_view/operations/substr/char/1.cc:
1253         Moved to...
1254         * testsuite/21_strings/basic_string_view/operations/substr/char.cc:
1255         ...here.
1256         * testsuite/21_strings/basic_string_view/operations/substr/wchar_t/1.cc:
1257         Moved to...
1258         * testsuite/21_strings/basic_string_view/operations/substr/wchar_t.cc:
1259         ...here.
1260         * testsuite/21_strings/basic_string_view/range_access/char/1.cc:
1261         Moved to...
1262         * testsuite/21_strings/basic_string_view/range_access/char.cc:
1263         ...here.
1264         * testsuite/21_strings/basic_string_view/range_access/wchar_t/1.cc:
1265         Moved to...
1266         * testsuite/21_strings/basic_string_view/range_access/wchar_t.cc:
1267         ...here.
1268         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char/1.cc:
1269         Moved to...
1270         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char.cc:
1271         ...here.
1272         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char16_t/1.cc:
1273         Moved to...
1274         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char16_t.cc:
1275         ...here.
1276         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char32_t/1.cc:
1277         Moved to...
1278         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char32_t.cc:
1279         ...here.
1280         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char8_t/1.cc:
1281         Moved to...
1282         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char8_t.cc:
1283         ...here.
1284         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/1.cc:
1285         Moved to...
1286         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/int.cc:
1287         ...here.
1288         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/wchar_t/1.cc:
1289         Moved to...
1290         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/wchar_t.cc:
1291         ...here.
1292         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char/1.cc:
1293         Moved to...
1294         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char.cc:
1295         ...here.
1296         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char16_t/1.cc:
1297         Moved to...
1298         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char16_t.cc:
1299         ...here.
1300         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char32_t/1.cc:
1301         Moved to...
1302         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char32_t.cc:
1303         ...here.
1304         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char8_t/1.cc:
1305         Moved to...
1306         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char8_t.cc:
1307         ...here.
1308         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/1.cc:
1309         Moved to...
1310         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/int.cc:
1311         ...here.
1312         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/wchar_t/1.cc:
1313         Moved to...
1314         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/wchar_t.cc:
1315         ...here.
1316         * testsuite/21_strings/char_traits/requirements/explicit_instantiation/char/1.cc:
1317         Moved to...
1318         * testsuite/21_strings/char_traits/requirements/explicit_instantiation/char.cc:
1319         ...here.
1320         * testsuite/21_strings/char_traits/requirements/explicit_instantiation/char16_t/1.cc:
1321         Moved to...
1322         * testsuite/21_strings/char_traits/requirements/explicit_instantiation/char16_t.cc:
1323         ...here.
1324         * testsuite/21_strings/char_traits/requirements/explicit_instantiation/char32_t/1.cc:
1325         Moved to...
1326         * testsuite/21_strings/char_traits/requirements/explicit_instantiation/char32_t.cc:
1327         ...here.
1328         * testsuite/21_strings/char_traits/requirements/explicit_instantiation/char8_t/1.cc:
1329         Moved to...
1330         * testsuite/21_strings/char_traits/requirements/explicit_instantiation/char8_t.cc:
1331         ...here.
1332         * testsuite/21_strings/char_traits/requirements/explicit_instantiation/short/1.cc:
1333         Moved to...
1334         * testsuite/21_strings/char_traits/requirements/explicit_instantiation/short.cc:
1335         ...here.
1336         * testsuite/21_strings/char_traits/requirements/explicit_instantiation/wchar_t/1.cc:
1337         Moved to...
1338         * testsuite/21_strings/char_traits/requirements/explicit_instantiation/wchar_t.cc:
1339         ...here.
1340
1341 2022-05-26  Jonathan Wakely  <jwakely@redhat.com>
1342
1343         * testsuite/20_util/duration/requirements/explicit_instantiation/explicit_instantiation.cc:
1344         Moved to...
1345         * testsuite/20_util/duration/requirements/explicit_instantiation.cc: ...here.
1346         * testsuite/20_util/time_point/requirements/explicit_instantiation/explicit_instantiation.cc:
1347         Moved to...
1348         * testsuite/20_util/time_point/requirements/explicit_instantiation.cc: ...here.
1349         * testsuite/20_util/unique_ptr/requirements/explicit_instantiation/explicit_instantiation.cc:
1350         Moved to...
1351         * testsuite/20_util/unique_ptr/requirements/explicit_instantiation.cc: ...here.
1352
1353 2022-05-25  Jason Merrill  <jason@redhat.com>
1354
1355         * testsuite/20_util/function_objects/constexpr_searcher.cc: Add
1356         constexpr.
1357
1358 2022-05-20  Jonathan Wakely  <jwakely@redhat.com>
1359
1360         * testsuite/26_numerics/random/bernoulli_distribution/operators/values.cc:
1361         Run fewer iterations for simulator targets.
1362         * testsuite/26_numerics/random/binomial_distribution/operators/values.cc:
1363         Likewise.
1364         * testsuite/26_numerics/random/discrete_distribution/operators/values.cc:
1365         Likewise.
1366         * testsuite/26_numerics/random/geometric_distribution/operators/values.cc:
1367         Likewise.
1368         * testsuite/26_numerics/random/negative_binomial_distribution/operators/values.cc:
1369         Likewise.
1370         * testsuite/26_numerics/random/poisson_distribution/operators/values.cc:
1371         Likewise.
1372         * testsuite/26_numerics/random/uniform_int_distribution/operators/values.cc:
1373         Likewise.
1374
1375 2022-05-19  Jonathan Wakely  <jwakely@redhat.com>
1376
1377         * include/bits/char_traits.h: Only include <cstdint> when
1378         necessary.
1379         * include/std/stacktrace: Use __UINTPTR_TYPE__ instead of
1380         uintptr_t.
1381         * src/c++11/cow-stdexcept.cc: Include <stdint.h>.
1382         * src/c++17/floating_to_chars.cc: Likewise.
1383         * testsuite/20_util/assume_aligned/1.cc: Include <cstdint>.
1384         * testsuite/20_util/assume_aligned/3.cc: Likewise.
1385         * testsuite/20_util/shared_ptr/creation/array.cc: Likewise.
1386
1387 2022-05-19  Jonathan Wakely  <jwakely@redhat.com>
1388
1389         * include/bits/basic_string.h: Do not include <ext/atomicity.h>
1390         here.
1391         * include/bits/cow_string.h: Include it here.
1392
1393 2022-05-19  Jonathan Wakely  <jwakely@redhat.com>
1394
1395         * include/Makefile.am: Add new header.
1396         * include/Makefile.in: Regenerate.
1397         * include/bits/memory_resource.h: New file.
1398         * include/std/deque: Include <bits/memory_resource.h>.
1399         * include/std/forward_list: Likewise.
1400         * include/std/list: Likewise.
1401         * include/std/map: Likewise.
1402         * include/std/memory_resource (pmr::memory_resource): Move to
1403         new <bits/memory_resource.h> header.
1404         (pmr::polymorphic_allocator): Likewise.
1405         * include/std/regex: Likewise.
1406         * include/std/set: Likewise.
1407         * include/std/stacktrace: Likewise.
1408         * include/std/string: Likewise.
1409         * include/std/unordered_map: Likewise.
1410         * include/std/unordered_set: Likewise.
1411         * include/std/vector: Likewise.
1412         * testsuite/21_strings/basic_string/types/pmr_typedefs.cc:
1413         Remove <memory_resource> header and check construction.
1414         * testsuite/23_containers/deque/types/pmr_typedefs.cc: Likewise.
1415         * testsuite/23_containers/forward_list/pmr_typedefs.cc:
1416         Likewise.
1417         * testsuite/23_containers/list/pmr_typedefs.cc: Likewise.
1418         * testsuite/23_containers/map/pmr_typedefs.cc: Likewise.
1419         * testsuite/23_containers/multimap/pmr_typedefs.cc: Likewise.
1420         * testsuite/23_containers/multiset/pmr_typedefs.cc: Likewise.
1421         * testsuite/23_containers/set/pmr_typedefs.cc: Likewise.
1422         * testsuite/23_containers/unordered_map/pmr_typedefs.cc:
1423         Likewise.
1424         * testsuite/23_containers/unordered_multimap/pmr_typedefs.cc:
1425         Likewise.
1426         * testsuite/23_containers/unordered_multiset/pmr_typedefs.cc:
1427         Likewise.
1428         * testsuite/23_containers/unordered_set/pmr_typedefs.cc:
1429         Likewise.
1430         * testsuite/23_containers/vector/pmr_typedefs.cc: Likewise.
1431         * testsuite/28_regex/match_results/pmr_typedefs.cc: Likewise.
1432
1433 2022-05-19  Jonathan Wakely  <jwakely@redhat.com>
1434
1435         * include/std/memory_resource (polymorphic_allocator): Add
1436         non-template equality operator, as proposed for LWG 3683.
1437         * testsuite/20_util/polymorphic_allocator/lwg3683.cc: New test.
1438
1439 2022-05-17  Jonathan Wakely  <jwakely@redhat.com>
1440
1441         * src/c++17/memory_resource.cc (set_default_resource): Use
1442         memory_order_acq_rel.
1443         (get_default_resource): Use memory_order_acquire.
1444
1445 2022-05-17  Jonathan Wakely  <jwakely@redhat.com>
1446
1447         * include/std/memory_resource (new_delete_resource): Add
1448         nodiscard, returns_nonnull and const attributes.
1449         (null_memory_resource): Likewise.
1450         (set_default_resource, get_default_resource): Add returns_nonnull
1451         attribute.
1452         (memory_resource::is_equal): Add nodiscard attribute.
1453         (operator==, operator!=): Likewise.
1454
1455 2022-05-17  Jonathan Wakely  <jwakely@redhat.com>
1456
1457         * include/bits/ios_base.h (io_category): Add const and nodiscard
1458         attributes.
1459         (make_error_code, make_error_condition): Add nodiscard.
1460         * include/std/future (future_category): Add const and nodiscard.
1461         (make_error_code, make_error_condition): Add nodiscard.
1462         * include/std/system_error (generic_category system_category):
1463         Add nodiscard. Replace _GLIBCXX_CONST with C++11 attribute.
1464         (error_code::value, error_code::category, error_code::operator bool)
1465         (error_condition::value, error_condition::category)
1466         (error_condition::operator bool, make_error_code)
1467         (make_error_condition, operator==, operator!=, operator<=>): Add
1468         nodiscard.
1469
1470 2022-05-17  Jonathan Wakely  <jwakely@redhat.com>
1471
1472         * testsuite/20_util/expected/synopsis.cc: Skip for versioned
1473         namespace.
1474         * testsuite/27_io/headers/iosfwd/synopsis.cc: Likewise.
1475
1476 2022-05-17  Jonathan Wakely  <jwakely@redhat.com>
1477
1478         * src/Makefile.am [ENABLE_SYMVERS_GNU_NAMESPACE] (cxx11_sources):
1479         Do not build the compatibility*-c++0x.cc objects.
1480         * src/Makefile.in: Regenerate.
1481         * src/c++11/compatibility-c++0x.cc [_GLIBCXX_INLINE_VERSION]:
1482         Refuse to build for the versioned namespace.
1483         * src/c++11/compatibility-chrono.cc: Likewise.
1484         * src/c++11/compatibility-condvar.cc: Likewise.
1485         * src/c++11/compatibility-thread-c++0x.cc: Likewise.
1486         * src/c++11/chrono.cc (system_clock, steady_clock):
1487         Use macros to define in inline namespace _V2, matching the
1488         declarations in <system_error>.
1489         * src/c++11/system_error.cc (system_category, generic_category):
1490         Likewise.
1491
1492 2022-05-16  Jonathan Wakely  <jwakely@redhat.com>
1493
1494         * doc/xml/manual/prerequisites.xml: Fix attributes for external
1495         hyperlink.
1496         * doc/html/manual/setup.html: Regenerate.
1497
1498 2022-05-16  Jonathan Wakely  <jwakely@redhat.com>
1499
1500         * doc/xml/manual/status_cxx2023.xml: Update with gcc-12 support.
1501         * doc/html/*: Regenerate.
1502
1503 2022-05-16  Jonathan Wakely  <jwakely@redhat.com>
1504
1505         * doc/xml/manual/intro.xml: Include new chapter.
1506         * doc/xml/manual/status_cxx2020.xml: Tweak release numbers.
1507         * doc/xml/manual/status_cxx2023.xml: New file.
1508         * doc/html/*: Regenerate.
1509
1510 2022-05-16  Jonathan Wakely  <jwakely@redhat.com>
1511
1512         * doc/html/manual/status.html: Regenerate.
1513         * doc/xml/manual/status_cxx2020.xml: Fix supported version for
1514         C++20 bit operations.
1515
1516 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
1517
1518         * include/bits/std_thread.h (thread::_State, thread::_State_ptr):
1519         Declare as private unless _GLIBCXX_THREAD_IMPL is defined.
1520         * src/c++11/thread.cc (_GLIBCXX_THREAD_IMPL): Define.
1521
1522 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
1523
1524         * include/std/future (launch): Make operators noexcept.
1525
1526 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
1527
1528         * doc/doxygen/user.cfg.in (PREDEFINED): Replace __exception_ptr
1529         with "__unspecified__".
1530         * libsupc++/exception_ptr.h: Improve doxygen docs.
1531         (__exception_ptr::swap): Also declare in namespace std.
1532
1533 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
1534
1535         * libsupc++/nested_exception.h (throw_with_nested) [C++17]: Use
1536         if-constexpr instead of tag dispatching.
1537         (rethrow_if_nested) [C++17]: Likewise.
1538         (rethrow_if_nested) [!__cpp_rtti]: Do not use dynamic_cast if it
1539         would require RTTI.
1540         * testsuite/18_support/nested_exception/rethrow_if_nested-term.cc:
1541         New test.
1542
1543 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
1544
1545         * doc/doxygen/user.cfg.in (PREDEFINED): Define
1546         _GTHREAD_USE_MUTEX_TIMEDLOCK macro.
1547         * include/bits/std_mutex.h (mutex, lock_guard): Use @since and
1548         @headerfile.
1549         * include/bits/unique_lock.h (unique_lock): Likewise.
1550         * include/std/mutex (recursive_mutex, timed_mutex)
1551         (recursive_timed_mutex, scoped_lock): Likewise.
1552
1553 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
1554
1555         * doc/doxygen/user.cfg.in (PREDEFINED): Define
1556         _GLIBCXX23_CONSTEXPR macro.
1557         * include/backward/auto_ptr.h (auto_ptr): Use @deprecated.
1558         * include/bits/unique_ptr.h (default_delete): Use @since and
1559         @headerfile.
1560         * include/std/scoped_allocator: Remove @ingroup from @file
1561         block.
1562
1563 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
1564
1565         * include/bits/std_thread.h (thread, thread::id): Improve
1566         doxygen docs.
1567         * include/std/future: Likewise.
1568         * include/std/thread (jthread): Likewise.
1569
1570 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
1571
1572         * include/bits/ostream_insert.h: Mark helper functions as
1573         undocumented by Doxygen.
1574         * include/bits/stl_algo.h: Use markdown for formatting and mark
1575         helper functions as undocumented.
1576         * include/bits/stl_numeric.h:  Likewise.
1577         * include/bits/stl_pair.h (pair): Add @headerfile.
1578
1579 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
1580
1581         * doc/doxygen/user.cfg.in (PREDEFINED): Define __allocator_base
1582         so that Doxygen shows the right base-class for std::allocator.
1583         * include/bits/alloc_traits.h: Improve doxygen docs.
1584         * include/bits/allocator.h: Likewise.
1585         * include/bits/new_allocator.h: Likewise.
1586         * include/ext/new_allocator.h: Likewise.
1587
1588 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
1589
1590         * doc/doxygen/user.cfg.in (PREDEFINED): Define macro
1591         _GLIBCXX_DOXYGEN_ONLY to expand its argument.
1592         * include/bits/c++config (_GLIBCXX_DOXYGEN_ONLY): Define.
1593         * include/bits/regex.h: Improve doxygen docs.
1594         * include/bits/regex_constants.h: Likewise.
1595         * include/bits/regex_error.h: Likewise.
1596
1597 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
1598
1599         * include/std/atomic: Suppress doxygen docs for
1600         implementation details.
1601         * include/bits/atomic_base.h: Likewise.
1602         * include/bits/shared_ptr_atomic.h: Use markdown. Fix grouping
1603         so that std::atomic is not added to the pointer abstractions
1604         group.
1605
1606 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
1607
1608         * include/std/system_error: Improve doxygen comments.
1609
1610 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
1611
1612         * include/bits/ptr_traits.h: Add some doxygen comments.
1613
1614 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
1615
1616         * doc/doxygen/user.cfg.in (PREDEFINED): Expand new macros to
1617         nothing.
1618         * include/bits/c++config (_GLIBCXX_BEGIN_INLINE_ABI_NAMESPACE)
1619         (_GLIBCXX_END_INLINE_ABI_NAMESPACE): Define new macros.
1620         * include/bits/algorithmfwd.h (_V2::__rotate): Use new macros
1621         for the namespace.
1622         * include/bits/chrono.h (chrono::_V2::system_clock): Likewise.
1623         * include/bits/stl_algo.h (_V2::__rotate): Likewise.
1624         * include/std/condition_variable (_V2::condition_variable_any):
1625         Likewise.
1626         * include/std/system_error (_V2::error_category): Likewise.
1627
1628 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
1629
1630         * include/bits/mofunc_impl.h: Fix doxygen command.
1631
1632 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
1633
1634         * doc/doxygen/user.cfg.in (GROUP_NESTED_COMPOUNDS): Set to NO.
1635         (CLASS_DIAGRAMS): Remove obsolete option.
1636
1637 2022-05-12  Jonathan Wakely  <jwakely@redhat.com>
1638
1639         * config/locale/dragonfly/numeric_members.cc: Remove whitespace.
1640         * config/locale/gnu/numeric_members.cc: Likewise.
1641         * include/bits/locale_facets_nonio.h: Likewise.
1642         * libsupc++/typeinfo: Likewise.
1643
1644 2022-05-10  Jonathan Wakely  <jwakely@redhat.com>
1645
1646         PR libstdc++/105284
1647         * include/std/iosfwd: Add declarations for <spanstream> class
1648         templates and typedefs.
1649         * include/std/spanstream (basic_spanbuf, basic_ispanstream)
1650         (basic_ospanstream, basic_spanstream): Remove default template
1651         arguments.
1652         * testsuite/27_io/headers/iosfwd/synopsis.cc: Add <spanstream>
1653         declarations.
1654         * testsuite/27_io/headers/iosfwd/types.cc: Check <spanstream>
1655         default arguments.
1656
1657 2022-05-10  Jonathan Wakely  <jwakely@redhat.com>
1658
1659         PR libstdc++/105284
1660         * include/std/iosfwd: Add declarations for <synstream> class
1661         templates and typedefs.
1662         * include/std/syncstream (basic_syncbuf, basic_osyncstream):
1663         Remove default template arguments.
1664         * testsuite/27_io/headers/iosfwd/synopsis.cc: New test.
1665         * testsuite/27_io/headers/iosfwd/types.cc: New test.
1666
1667 2022-05-06  Jonathan Wakely  <jwakely@redhat.com>
1668
1669         * include/bits/random.tcc (operator==): Only check
1670         normal_distribution::_M_saved_available once.
1671         * testsuite/26_numerics/random/normal_distribution/operators/equal.cc:
1672         Check equality after state changes.
1673         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
1674         lineno.
1675
1676 2022-05-06  Jonathan Wakely  <jwakely@redhat.com>
1677
1678         PR libstdc++/105502
1679         * include/bits/random.tcc
1680         (operator>>(basic_istream<C,T>&, normal_distribution<R>&)):
1681         Update state when __state_avail is false.
1682         * testsuite/26_numerics/random/normal_distribution/operators/serialize.cc:
1683         Check that deserialized object equals serialized one.
1684
1685 2022-05-06  Alexandre Oliva  <oliva@adacore.com>
1686
1687         * include/experimental/bits/simd.h [__ALTIVEC__]: Require VSX
1688         for double, long long, and 64-bit long intrinsic types.
1689         [__ALTIVEC__] (__intrinsic_type): Mention 128-bit in
1690         preexisting long double diagnostic, adjust no-VSX double
1691         diagnostic to cover 64-bit long double as well.
1692
1693 2022-05-06  Jonathan Wakely  <jwakely@redhat.com>
1694
1695         PR libstdc++/104731
1696         * testsuite/27_io/filesystem/iterators/error_reporting.cc:
1697         Use a trailing char array as storage for dirent::d_name.
1698
1699 2022-05-06  Jonathan Wakely  <jwakely@redhat.com>
1700
1701         * include/std/stacktrace: Do not include <cxxabi.h>.
1702         (__cxa_demangle): Declare.
1703
1704 2022-05-06  Jonathan Wakely  <jwakely@redhat.com>
1705
1706         PR libstdc++/99871
1707         * include/bits/specfun.h: Use visibility attribute on namespace,
1708         instead of pragma push/pop.
1709         * libsupc++/compare: Likewise.
1710         * libsupc++/exception: Likewise.
1711         * libsupc++/exception.h: Likewise.
1712         * libsupc++/exception_ptr.h: Likewise.
1713         * libsupc++/initializer_list: Likewise.
1714         * libsupc++/nested_exception.h: Likewise.
1715
1716 2022-05-06  Jonathan Wakely  <jwakely@redhat.com>
1717
1718         * doc/xml/manual/test.xml: Remove requirement for copyright and
1719         GPL notice in tests.
1720         * doc/html/manual/test.html: Regenerate.
1721
1722 2022-05-05  Jonathan Wakely  <jwakely@redhat.com>
1723
1724         * include/experimental/memory_resource [!__cpp_rtti]
1725         (__resource_adaptor_imp::do_is_equal): Do not use dynamic_cast
1726         when RTTI is disabled.
1727         * testsuite/17_intro/freestanding.cc: Require RTTI.
1728         * testsuite/18_support/exception/38732.cc: Likewise.
1729         * testsuite/18_support/exception_ptr/rethrow_exception.cc:
1730         Likewise.
1731         * testsuite/18_support/nested_exception/68139.cc: Likewise.
1732         * testsuite/18_support/nested_exception/rethrow_if_nested.cc:
1733         Likewise.
1734         * testsuite/18_support/type_info/103240.cc: Likewise.
1735         * testsuite/18_support/type_info/fundamental.cc: Likewise.
1736         * testsuite/18_support/type_info/hash_code.cc: Likewise.
1737         * testsuite/20_util/any/assign/emplace.cc: Likewise.
1738         * testsuite/20_util/any/cons/in_place.cc: Likewise.
1739         * testsuite/20_util/any/misc/any_cast.cc: Likewise.
1740         * testsuite/20_util/any/observers/type.cc: Likewise.
1741         * testsuite/20_util/function/1.cc: Likewise.
1742         * testsuite/20_util/function/2.cc: Likewise.
1743         * testsuite/20_util/function/3.cc: Likewise.
1744         * testsuite/20_util/function/4.cc: Likewise.
1745         * testsuite/20_util/function/5.cc: Likewise.
1746         * testsuite/20_util/function/6.cc: Likewise.
1747         * testsuite/20_util/function/7.cc: Likewise.
1748         * testsuite/20_util/function/8.cc: Likewise.
1749         * testsuite/20_util/polymorphic_allocator/resource.cc: Likewise.
1750         * testsuite/20_util/shared_ptr/casts/1.cc: Likewise.
1751         * testsuite/20_util/shared_ptr/casts/rval.cc: Likewise.
1752         * testsuite/20_util/shared_ptr/cons/unique_ptr_deleter_ref_2.cc:
1753         Likewise.
1754         * testsuite/20_util/shared_ptr/misc/get_deleter.cc: Likewise.
1755         * testsuite/20_util/typeindex/comparison_operators.cc: Likewise.
1756         * testsuite/20_util/typeindex/comparison_operators_c++20.cc:
1757         Likewise.
1758         * testsuite/20_util/typeindex/hash.cc: Likewise.
1759         * testsuite/20_util/typeindex/hash_code.cc: Likewise.
1760         * testsuite/20_util/typeindex/name.cc: Likewise.
1761         * testsuite/22_locale/ctype/is/string/89728_neg.cc: Likewise.
1762         * testsuite/22_locale/global_templates/standard_facet_hierarchies.cc:
1763         Likewise.
1764         * testsuite/22_locale/global_templates/user_facet_hierarchies.cc:
1765         Likewise.
1766         * testsuite/22_locale/locale/13630.cc: Check type without using
1767         RTTI.
1768         * testsuite/23_containers/array/requirements/non_default_constructible.cc:
1769         Require RTTI.
1770         * testsuite/27_io/basic_ostream/emit/1.cc: Likewise.
1771         * testsuite/27_io/fpos/14320-1.cc: Check type without using RTTI.
1772         * testsuite/27_io/fpos/mbstate_t/12065.cc: Require RTTI.
1773         * testsuite/27_io/ios_base/failure/dual_abi.cc: Likewise.
1774         * testsuite/experimental/any/misc/any_cast.cc: Likewise.
1775         * testsuite/experimental/any/observers/type.cc: Likewise.
1776         * testsuite/experimental/memory_resource/resource_adaptor.cc:
1777         Likewise.
1778         * testsuite/lib/libstdc++.exp (check_effective_target_rtti):
1779         Define new proc.
1780         * testsuite/tr1/3_function_objects/function/1.cc: Likewise.
1781         * testsuite/tr1/3_function_objects/function/2.cc: Likewise.
1782         * testsuite/tr1/3_function_objects/function/3.cc: Likewise.
1783         * testsuite/tr1/3_function_objects/function/4.cc: Likewise.
1784         * testsuite/tr1/3_function_objects/function/5.cc: Likewise.
1785         * testsuite/tr1/3_function_objects/function/6.cc: Likewise.
1786         * testsuite/tr1/3_function_objects/function/7.cc: Likewise.
1787         * testsuite/tr1/3_function_objects/function/8.cc: Likewise.
1788         * testsuite/tr2/bases/value.cc: Likewise.
1789         * testsuite/tr2/direct_bases/value.cc: Likewise.
1790         * testsuite/util/exception/safety.h [!__cpp_rtti]: Don't print
1791         types without RTTI.
1792
1793 2022-05-04  Jonathan Wakely  <jwakely@redhat.com>
1794
1795         PR libstdc++/104719
1796         * include/std/array (array::size(), array::max_size())
1797         (array::empty(), array::data()): Add  always_inline attribute.
1798
1799 2022-05-04  Jonathan Wakely  <jwakely@redhat.com>
1800
1801         PR libstdc++/104719
1802         * include/std/array (__array_traits::_S_ref): Remove.
1803         (__array_traits::_S_ptr): Remove.
1804         (__array_traits<T, 0>::_Type): Define operator[] and operator T*
1805         to provide an array-like API.
1806         (array::_AT_Type): Remove public typeef.
1807         (array::operator[], array::at, array::front, array::back): Use
1808         index operator to access _M_elems instead of _S_ref.
1809         (array::data): Use implicit conversion from _M_elems to pointer.
1810         (swap(array&, array&)): Use __enable_if_t helper.
1811         (get<I>): Use index operator to access _M_elems.
1812         * testsuite/23_containers/array/tuple_interface/get_neg.cc:
1813         Adjust dg-error line numbers.
1814
1815 2022-05-03  Alexandre Oliva  <oliva@adacore.com>
1816
1817         PR c++/105324
1818         * testsuite/20_util/from_chars/pr105324.cc: Guard test body
1819         with conditional for floating-point overloads of from_char.
1820
1821 2022-05-02  Patrick Palka  <ppalka@redhat.com>
1822
1823         PR libstdc++/103911
1824         * src/c++17/floating_from_chars.cc (find_end_of_float): Accept
1825         two delimeters for the exponent part in the form of a possibly
1826         NULL string of length two.  Don't use std::tolower.
1827         (pattern): Adjust calls to find_end_of_float accordingly.
1828
1829 2022-05-02  Patrick Palka  <ppalka@redhat.com>
1830
1831         PR libstdc++/105441
1832         * src/c++17/floating_from_chars.cc (__floating_from_chars_hex):
1833         Also accept 'P' as the start of the exponent.
1834         * testsuite/20_util/from_chars/7.cc: Add corresponding testcase.
1835
1836 2022-04-29  Jonathan Wakely  <jwakely@redhat.com>
1837
1838         PR libstdc++/105417
1839         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt:
1840         Regenerate.
1841         * src/c++11/compatibility-ldbl-alt128.cc [_GLIBCXX_USE_DUAL_ABI]:
1842         Define __gnu_ieee128::num_get<C>::_M_extract_int[abi:cxx11]<I>
1843         symbols as aliases for corresponding symbols without abi-tag.
1844
1845 2022-04-29  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
1846
1847         * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
1848         * config/abi/post/i386-solaris/amd64/baseline_symbols.txt:
1849         Likewise.
1850         * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
1851         * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
1852         Likewise.
1853
1854 2022-04-28  Jonathan Wakely  <jwakely@redhat.com>
1855
1856         PR libstdc++/99290
1857         * src/c++17/fs_ops.cc (fs::copy): Pass error_code to
1858         directory_iterator constructor, and check on each iteration.
1859         * src/filesystem/ops.cc (fs::copy): Likewise.
1860         * testsuite/27_io/filesystem/operations/copy.cc: Check for
1861         errors during recursion.
1862         * testsuite/experimental/filesystem/operations/copy.cc:
1863         Likewise.
1864
1865 2022-04-28  François Dumont  <fdumont@gcc.gnu.org>
1866
1867         * config/abi/pre/gnu-versioned-namespace.ver: Remove
1868         std::random_device::* pattern.
1869
1870 2022-04-27  Jakub Jelinek  <jakub@redhat.com>
1871
1872         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
1873         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
1874         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
1875         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
1876         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
1877         * config/abi/post/powerpc-linux-gnu/baseline_symbols.txt: Update.
1878         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
1879         * config/abi/post/powerpc64-linux-gnu/32/baseline_symbols.txt: Update.
1880
1881 2022-04-27  Jonathan Wakely  <jwakely@redhat.com>
1882
1883         * python/libstdcxx/v6/printers.py (SharedPointerPrinter): Add
1884         support for atomic<shared_ptr<T>> and atomic<weak_ptr<T>>.
1885         (StdAtomicPrinter): New printer.
1886         (build_libstdcxx_dictionary): Register new printer.
1887         * testsuite/libstdc++-prettyprinters/cxx11.cc: Test std::atomic.
1888         * testsuite/libstdc++-prettyprinters/cxx20.cc: Test atomic smart
1889         pointers.
1890
1891 2022-04-26  Jonathan Wakely  <jwakely@redhat.com>
1892
1893         * include/bits/shared_ptr_atomic.h (atomic<shared_ptr>): Add
1894         constructor for constant initialization from nullptr_t.
1895         * testsuite/20_util/shared_ptr/atomic/atomic_shared_ptr.cc:
1896         Check for new constructor.
1897
1898 2022-04-26  Jonathan Wakely  <jwakely@redhat.com>
1899
1900         * include/bits/fs_path.h (hash<filesystem::path>): Define.
1901         * testsuite/27_io/filesystem/path/nonmember/hash_value.cc:
1902         Check std::hash specialization.
1903
1904 2022-04-25  Jonathan Wakely  <jwakely@redhat.com>
1905
1906         * include/bits/ptr_traits.h (__cpp_lib_constexpr_memory): Define
1907         conditionally.
1908         * include/bits/unique_ptr.h (__cpp_lib_constexpr_memory):
1909         Define for C++23.
1910         (default_delete, default_delete<T[]>, __uniq_ptr_impl)
1911         (unique_ptr, unique_ptr<T[], D>): Add constexpr to all member
1912         functions.
1913         * include/std/version (__cpp_lib_constexpr_memory): Define new
1914         value for C++23.
1915         * testsuite/20_util/unique_ptr/assign/constexpr.cc: New test.
1916         * testsuite/20_util/unique_ptr/comparison/constexpr.cc: New test.
1917         * testsuite/20_util/unique_ptr/cons/constexpr_c++20.cc: New test.
1918         * testsuite/20_util/unique_ptr/creation/constexpr.cc: New test.
1919         * testsuite/20_util/unique_ptr/modifiers/constexpr.cc: New test.
1920         * testsuite/20_util/unique_ptr/specialized_algorithms/constexpr.cc:
1921         New test.
1922
1923 2022-04-25  Jonathan Wakely  <jwakely@redhat.com>
1924
1925         PR libstdc++/105375
1926         * include/std/future (packaged_task): Add deduction guides.
1927         * testsuite/30_threads/packaged_task/cons/deduction.cc: New test.
1928
1929 2022-04-25  Philipp Fent  <fent@in.tum.de>
1930
1931         * python/libstdcxx/v6/printers.py (StdSpanPrinter._iterator):
1932         Rename as iterator.
1933         (StdInitializerListPrinter): Define new printer.
1934         (build_libstdcxx_dictionary): Register new printer.
1935         * testsuite/libstdc++-prettyprinters/cxx11.cc: Check printer for
1936         initializer_list.
1937
1938 2022-04-22  Thomas W Rodgers  <trodgers@redhat.com>
1939
1940         PR libstdc++/102994
1941         * include/bits/atomic_base.h (atomic_flag::notify_one,
1942         notify_all): Remove const qualification.
1943         (__atomic_base::notify_one, notify_all): Likewise.
1944         * include/std/atomic (atomic<bool>::notify_one, notify_all):
1945         Likewise.
1946         (atomic::notify_one, notify_all): Likewise.
1947         (atomic<T*>::notify_one, notify_all): Likewise.
1948         (atomic_notify_one, atomic_notify_all): Likewise.
1949         * testsuite/29_atomics/atomic/wait_notify/102994.cc: Adjust test
1950         to account for change in notify_one/notify_all signature.
1951
1952 2022-04-21  Patrick Palka  <ppalka@redhat.com>
1953
1954         * include/std/charconv (__from_chars_alnum_to_val_table):
1955         Simplify initialization of __lower/__upper_letters.
1956         (__from_chars_alnum_to_val): Default the template parameter to
1957         false.
1958         * src/c++17/floating_from_chars.cc (starts_with_ci): Don't
1959         assume the uppercase and lowercase letters are contiguous.
1960         (__floating_from_chars_hex): Likewise.
1961
1962 2022-04-21  Patrick Palka  <ppalka@redhat.com>
1963
1964         PR c++/105297
1965         PR c++/105322
1966         * include/std/charconv (__from_chars_alnum_to_val): Make
1967         initializer for __table dependent in an artificial way.
1968
1969 2022-04-21  Jonathan Wakely  <jwakely@redhat.com>
1970
1971         PR libstdc++/105324
1972         * src/c++17/floating_from_chars.cc (buffer_resource::do_allocate):
1973         Remove assertion.
1974         * testsuite/20_util/from_chars/pr105324.cc: New test.
1975
1976 2022-04-20  Jonathan Wakely  <jwakely@redhat.com>
1977
1978         * testsuite/21_strings/basic_string_view/operations/copy/char/constexpr.cc:
1979         Check correct feature test macro.
1980
1981 2022-04-20  Jonathan Wakely  <jwakely@redhat.com>
1982
1983         PR libstdc++/93602
1984         * doc/xml/manual/prerequisites.xml: Document libiconv
1985         workarounds.
1986         * doc/html/manual/setup.html: Regenerate.
1987         * src/Makefile.am (CXXLINK): Add $(LTLIBICONV).
1988         * src/Makefile.in: Regenerate.
1989
1990 2022-04-19  Patrick Palka  <ppalka@redhat.com>
1991
1992         * src/c++17/floating_to_chars.cc (_GLIBCXX_ASSERTIONS): Don't
1993         define.
1994         (__floating_to_chars_shortest): Add __builtin_unreachable calls to
1995         squelch false-positive -Wmaybe-uninitialized and -Wreturn-type
1996         warnings.
1997         (__floating_to_chars_precision): Likewise.
1998
1999 2022-04-19  Philipp Fent  <fent@in.tum.de>
2000
2001         * python/libstdcxx/v6/printers.py (StdSpanPrinter): Define.
2002         * testsuite/libstdc++-prettyprinters/cxx20.cc: Test it.
2003
2004 2022-04-19  Jonathan Wakely  <jwakely@redhat.com>
2005
2006         * acinclude.m4 (GLIBCXX_ENABLE_BACKTRACE): Fix shell operators.
2007         * configure: Regenerate.
2008
2009 2022-04-18  Patrick Palka  <ppalka@redhat.com>
2010
2011         * include/std/charconv (__from_chars_pow2_base): Manually
2012         unroll the first iteration of the main loop and simplify
2013         accordingly.
2014
2015 2022-04-15  Patrick Palka  <ppalka@redhat.com>
2016
2017         PR libstdc++/104858
2018         * include/bits/ranges_algo.h (__minmax_fn): Avoid dereferencing
2019         __first twice at the start.
2020         * testsuite/25_algorithms/minmax/constrained.cc (test06): New test.
2021
2022 2022-04-15  Patrick Palka  <ppalka@redhat.com>
2023
2024         * include/std/charconv (__from_chars_alnum_to_val_table): Define.
2025         (__from_chars_alnum_to_val): Define.
2026         (__from_chars_binary): Rename to ...
2027         (__from_chars_pow2_base): ... this.  Generalize to handle any
2028         power-of-two base using __from_chars_alnum_to_val.
2029         (__from_chars_digit): Optimize digit recognition to a single
2030         test instead of two tests.  Use [[__unlikely___]] attribute.
2031         (__from_chars_alpha_to_num): Remove.
2032         (__from_chars_alnum): Use __from_chars_alnum_to_val.  Use a
2033         nested loop for the overflow case.  Maintain a lower bound
2034         on the number of available bits in the result and use it to
2035         omit the overflow check.
2036         (from_chars): Adjust appropriately.
2037         * src/c++17/floating_from_chars.cc (ascii_to_hexit): Remove.
2038         (__floating_from_chars_hex): Use __from_chars_alnum_to_val
2039         to recognize a hex digit instead.
2040
2041 2022-04-14  Palmer Dabbelt  <palmer@rivosinc.com>
2042
2043         * acinclude.m4 (GLIBCXX_ENABLE_LOCK_POLICY): Force auto to mutex
2044         for RISC-V.
2045         * configure: Regenerate.
2046
2047 2022-04-14  Jonathan Wakely  <jwakely@redhat.com>
2048
2049         * doc/xml/manual/intro.xml: Fix comment.
2050
2051 2022-04-14  Jonathan Wakely  <jwakely@redhat.com>
2052
2053         * include/precompiled/stdc++.h: Include <stacktrace> and
2054         <stdatomic.h> for C++23.
2055
2056 2022-04-14  Jonathan Wakely  <jwakely@redhat.com>
2057
2058         PR libstdc++/105269
2059         * include/bits/stl_vector.h (__cpp_lib_constexpr_vector):
2060         Define.
2061         * include/c_compatibility/stdatomic.h (__cpp_lib_stdatomic_h):
2062         Define.
2063         * include/std/optional (__cpp_lib_optional): Define new value
2064         for C++23.
2065         (__cpp_lib_monadic_optional): Remove.
2066         * include/std/version (__cpp_lib_constexpr_vector): Define.
2067         (__cpp_lib_stdatomic_h): Define.
2068         (__cpp_lib_optional): Define new value for C++23.
2069         (__cpp_lib_monadic_optional): Remove.
2070         * testsuite/20_util/optional/monadic/and_then.cc: Adjust.
2071         * testsuite/20_util/optional/requirements.cc: Adjust for C++23.
2072         * testsuite/20_util/optional/version.cc: Likewise.
2073         * testsuite/23_containers/vector/cons/constexpr.cc: Check
2074         feature test macro.
2075         * testsuite/29_atomics/headers/stdatomic.h/c_compat.cc:
2076         Likewise.
2077         * testsuite/20_util/optional/monadic/version.cc: Removed.
2078         * testsuite/23_containers/vector/requirements/version.cc: New test.
2079         * testsuite/29_atomics/headers/stdatomic.h/version.cc: New test.
2080
2081 2022-04-12  Jonathan Wakely  <jwakely@redhat.com>
2082
2083         * acinclude.m4 (GLIBCXX_ENABLE_BACKTRACE): Check for mmap.
2084         * config.h.in: Regenerate.
2085         * configure: Regenerate.
2086
2087 2022-04-12  Jonathan Wakely  <jwakely@redhat.com>
2088
2089         * include/std/stacktrace (basic_stacktrace::current): Reallocate
2090         a smaller container if the unused capacity is larger than the
2091         used size.
2092
2093 2022-04-12  Jonathan Wakely  <jwakely@redhat.com>
2094
2095         * include/std/stacktrace (basic_stacktrace): Use _Impl::_M_clone
2096         or _Impl::_M_assign to initialize elements in allocated storage.
2097         (basic_stacktrace::_M_clear()): Use _Impl::_M_resize instead of
2098         _Impl::_M_destroy.
2099         (basic_stacktrace::_Impl::_M_destroy()): Replace with ...
2100         (basic_stacktrace::_Impl::_M_resize(size_type, allocator&)): New
2101         function.
2102         (basic_stacktrace::_Impl::_M_push_back): Use _M_xclone. Construct
2103         new element using allocator.
2104         (basic_stacktrace::_Impl::_M_clone): New function.
2105         (basic_stacktrace::_Impl::_M_xclone): New function.
2106         (basic_stacktrace::_Impl::_M_assign): New function.
2107
2108 2022-04-12  Jonathan Wakely  <jwakely@redhat.com>
2109
2110         * include/std/stacktrace (basic_stacktrace::_Impl::_M_allocate):
2111         Use nothrow new instead of try block for std::allocator.
2112         (basic_stacktrace::_Impl::_M_deallocate): Use delete for
2113         std::allocator.
2114
2115 2022-04-12  Jonathan Wakely  <jwakely@redhat.com>
2116
2117         * include/std/stacktrace (basic_stacktrace::current): Replace
2118         calls to _M_reserve and _S_curr_cb with call to _M_prepare.
2119         Check return value of backtrace_simple when max depth given.
2120         (basic_stacktrace::_M_reserve): Remove.
2121         (basic_stacktrace::_S_curr_cb): Remove.
2122         (basic_stacktrace::_M_prepare(size_type)): New function to
2123         reserve initial capacity and return callback.
2124         (basic_stacktrace::_Impl::_M_allocate): Remove check for 0 < n
2125         and remove redundant zeroing of _M_frames and _M_capacity.
2126         (basic_stacktrace::_Impl::_M_push_back): Add [[unlikely]]
2127         attribute. Assign _Impl instead of swapping.
2128         * testsuite/19_diagnostics/stacktrace/current.cc: New test.
2129
2130 2022-04-11  Jonathan Wakely  <jwakely@redhat.com>
2131
2132         * include/std/stacktrace (basic_stacktrace::_Impl::_M_allocate):
2133         Change [[unlikely]] attribute to [[likely]].
2134
2135 2022-04-11  Jonathan Wakely  <jwakely@redhat.com>
2136
2137         PR libstdc++/105031
2138         * include/std/stacktrace (basic_stacktrace::basic_stacktrace):
2139         Fix allocator usage in constructors.
2140         (basic_stacktrace::operator=(const basic_stacktrace&)): Do not
2141         try to reallocate using const allocator.
2142         (basic_stacktrace::operator=(basic_stacktrace&&)): Fix
2143         if-constexpr with non-constant condition. Do not allocate new
2144         storage if allocator propagates. Do not set _M_size if
2145         allocation fails.
2146         (basic_stacktrace::swap(basic_stacktrace&)): Fix typo. Add
2147         assertion that non-propagating allocators are equal.
2148         * testsuite/19_diagnostics/stacktrace/stacktrace.cc: New test.
2149
2150 2022-04-11  Jonathan Wakely  <jwakely@redhat.com>
2151
2152         * include/std/stacktrace (basic_stacktrace::current): Duplicate
2153         implementation into each overload. Add noinline attribute and
2154         skip current frame.
2155         (basic_stacktrace::max_size()): Call _Impl::_S_max_size.
2156         (basic_stacktrace::_S_curr_cb()): New function defining lambda.
2157         (basic_stacktrace::_Impl::_S_max_size): New function defining
2158         maximum size in terms of allocator and size_type.
2159         (basic_stacktrace::_Impl::_M_allocate): Check against
2160         max_size().
2161         * testsuite/19_diagnostics/stacktrace/entry.cc: Call function
2162         for non-constexpr checks. Check line number is correct.
2163
2164 2022-04-11  Jonathan Wakely  <jwakely@redhat.com>
2165
2166         * testsuite/20_util/stacktrace/entry.cc: Moved to...
2167         * testsuite/19_diagnostics/stacktrace/entry.cc: ...here.
2168         * testsuite/20_util/stacktrace/synopsis.cc: Moved to...
2169         * testsuite/19_diagnostics/stacktrace/synopsis.cc: ...here.
2170         * testsuite/20_util/stacktrace/version.cc: Moved to...
2171         * testsuite/19_diagnostics/stacktrace/version.cc: ...here.
2172
2173 2022-04-11  Jonathan Wakely  <jwakely@redhat.com>
2174
2175         * include/experimental/bits/fs_path.h (path): Define special
2176         members after path::_Cmpt is complete.
2177
2178 2022-04-08  Jonathan Wakely  <jwakely@redhat.com>
2179
2180         PR libstdc++/105153
2181         * include/std/expected
2182         (expected<void,E>::expected(expected<U,G>&&)): Fix constraints.
2183         * testsuite/20_util/expected/cons.cc: Check constructor.
2184
2185 2022-04-08  Jonathan Wakely  <jwakely@redhat.com>
2186
2187         PR libstdc++/105154
2188         * include/std/expected (expected<void, E>::swap): Set
2189         _M_has_value to false for objects that previously had a value.
2190         * testsuite/20_util/expected/swap.cc: Fix test to check void
2191         specialization.
2192
2193 2022-04-08  Jonathan Wakely  <jwakely@redhat.com>
2194
2195         PR libstdc++/105146
2196         * include/std/expected (bad_expected_access): Move constructor
2197         parameter.
2198         * testsuite/20_util/expected/bad.cc: New test.
2199
2200 2022-04-07  Hans-Peter Nilsson  <hp@axis.com>
2201
2202         * testsuite/20_util/expected/requirements.cc: Correct minimal-size
2203         test.
2204
2205 2022-04-02  Jakub Jelinek  <jakub@redhat.com>
2206
2207         PR libstdc++/105128
2208         * include/std/source_location (std::source_location::__impl): Move
2209         definition before using __builtin_ret_type.
2210
2211 2022-04-01  Jonathan Wakely  <jwakely@redhat.com>
2212
2213         * include/std/utility (unreachable): Define for C++23.
2214         * include/std/version (__cpp_lib_unreachable): Define.
2215         * src/c++11/debug.cc (__glibcxx_assert_fail): Check for valid
2216         arguments. Handle only the function being given.
2217         * testsuite/20_util/unreachable/1.cc: New test.
2218         * testsuite/20_util/unreachable/version.cc: New test.
2219
2220 2022-04-01  Jonathan Wakely  <jwakely@redhat.com>
2221
2222         * include/experimental/bits/fs_fwd.h (copy_file): Remove
2223         incorrect noexcept from declaration.
2224         * include/experimental/bits/fs_path.h (path::begin, path::end):
2225         Add noexcept to declarations, to match definitions.
2226
2227 2022-04-01  Timm Bäder  <tbaeder@redhat.com>
2228
2229         * include/bits/fs_ops.h: Fix filename in Doxygen comment.
2230         * include/experimental/bits/fs_ops.h: Likewise.
2231
2232 2022-03-31  Jonathan Wakely  <jwakely@redhat.com>
2233
2234         * libsupc++/new_opa.cc (aligned_alloc): Add comment.
2235
2236 2022-03-29  Jonathan Wakely  <jwakely@redhat.com>
2237
2238         * testsuite/18_support/exception/38732.cc: Disable for C++23.
2239         * testsuite/18_support/headers/exception/synopsis.cc: Likewise.
2240         * testsuite/18_support/unexpected_handler.cc: Likewise.
2241
2242 2022-03-29  Jonathan Wakely  <jwakely@redhat.com>
2243
2244         * libsupc++/compare (_Strong_order) [!__cpp_using_enum]: Add
2245         static data members for _Fp_fmt enumerators.
2246
2247 2022-03-29  Jonathan Wakely  <jwakely@redhat.com>
2248
2249         * include/std/version (__cpp_lib_variant): Fix conditions to
2250         match <variant>.
2251         (__cpp_lib_expected): Fix condition to match <expected>.
2252
2253 2022-03-28  Jonathan Wakely  <jwakely@redhat.com>
2254
2255         * testsuite/20_util/optional/monadic/and_then.cc: Fix typo.
2256         * testsuite/20_util/optional/monadic/transform.cc: Likewise.
2257         * testsuite/22_locale/codecvt/always_noconv/char/1.cc: Likewise.
2258         * testsuite/22_locale/codecvt/encoding/char/1.cc: Likewise.
2259         * testsuite/22_locale/codecvt/in/char/1.cc: Likewise.
2260         * testsuite/22_locale/codecvt/max_length/char/1.cc: Likewise.
2261         * testsuite/22_locale/codecvt/out/char/1.cc: Likewise.
2262         * testsuite/22_locale/codecvt/unshift/char/1.cc: Likewise.
2263
2264 2022-03-27  Jonathan Wakely  <jwakely@redhat.com>
2265
2266         * doc/doxygen/user.cfg.in: Add new header.
2267         * include/Makefile.am: Likewise.
2268         * include/Makefile.in: Regenerate.
2269         * include/precompiled/stdc++.h: Add new header.
2270         * include/std/version (__cpp_lib_expected): Define.
2271         * libsupc++/exception [__cplusplus > 202002] (unexpected)
2272         (unexpected_handler, set_unexpected): Do not declare for C++23.
2273         * include/std/expected: New file.
2274         * testsuite/20_util/expected/assign.cc: New test.
2275         * testsuite/20_util/expected/cons.cc: New test.
2276         * testsuite/20_util/expected/illformed_neg.cc: New test.
2277         * testsuite/20_util/expected/observers.cc: New test.
2278         * testsuite/20_util/expected/requirements.cc: New test.
2279         * testsuite/20_util/expected/swap.cc: New test.
2280         * testsuite/20_util/expected/synopsis.cc: New test.
2281         * testsuite/20_util/expected/unexpected.cc: New test.
2282         * testsuite/20_util/expected/version.cc: New test.
2283
2284 2022-03-25  Jonathan Wakely  <jwakely@redhat.com>
2285
2286         * include/std/bit (bit_cast, byteswap, endian): Add doxygen
2287         comments.
2288
2289 2022-03-23  Jonathan Wakely  <jwakely@redhat.com>
2290
2291         PR libstdc++/105027
2292         * include/std/bit (bit_cast): Add constraints.
2293         * testsuite/26_numerics/bit/bit.cast/105027.cc: New test.
2294
2295 2022-03-23  Jonathan Wakely  <jwakely@redhat.com>
2296
2297         * include/std/version [!_GLIBCXX_HOSTED]
2298         (__cpp_lib_hardware_interference_size): Define for freestanding.
2299         (__cpp_lib_bit_cast): Likewise.
2300         (__cpp_lib_is_layout_compatible): Likewise.
2301         (__cpp_lib_is_pointer_interconvertible): Likewise.
2302         (__cpp_lib_adaptor_iterator_pair_constructor): Do not define for
2303         freestanding.
2304         (__cpp_lib_invoke_r): Likewise.
2305         (__cpp_lib_ios_noreplace): Likewise.
2306         (__cpp_lib_monadic_optional): Likewise.
2307         (__cpp_lib_move_only_function): Likewise.
2308         (__cpp_lib_spanstream): Likewise.
2309         (__cpp_lib_stacktrace): Likewise.
2310         (__cpp_lib_string_contains): Likewise.
2311         (__cpp_lib_string_resize_and_overwrite): Likewise.
2312         (__cpp_lib_to_underlying): Likewise.
2313
2314 2022-03-23  Jonathan Wakely  <jwakely@redhat.com>
2315
2316         PR libstdc++/105021
2317         * include/bits/atomic_base.h [!_GLIBCXX_HOSTED]: Do not include
2318         <bits/atomic_wait.h> for freestanding.
2319
2320 2022-03-22  Hans-Peter Nilsson  <hp@axis.com>
2321
2322         * testsuite/20_util/from_chars/6.cc (test01) [FE_DOWNWARD]:
2323         Conditionalize call to fesetround.
2324
2325 2022-03-21  Jakub Jelinek  <jakub@redhat.com>
2326
2327         PR libstdc++/104990
2328         * include/bits/locale_facets_nonio.tcc (get): Don't check if do_get
2329         isn't overloaded if __clang__ is defined.
2330
2331 2022-03-18  Jonathan Wakely  <jwakely@redhat.com>
2332
2333         PR libstdc++/104242
2334         * include/std/any (any(T&&)): Revert change to constraints.
2335         * testsuite/20_util/any/cons/104242.cc: New test.
2336
2337 2022-03-18  Jonathan Wakely  <jwakely@redhat.com>
2338
2339         PR libstdc++/92546
2340         * include/pstl/glue_algorithm_defs.h: Replace <functional> with
2341         <bits/stl_pair.h>.
2342         * include/pstl/utils.h: Replace <iterator> with <type_traits>.
2343         (__pstl::__internal::__except_handler): Use std::__terminate
2344         instead of std::terminate.
2345         * src/c++17/fs_path.cc: Include <array>.
2346         * testsuite/25_algorithms/adjacent_find/constexpr.cc: Include
2347         <functional>.
2348         * testsuite/25_algorithms/binary_search/constexpr.cc: Likewise.
2349         * testsuite/25_algorithms/clamp/constrained.cc: Likewise.
2350         * testsuite/25_algorithms/equal/constrained.cc: Likewise.
2351         * testsuite/25_algorithms/for_each/constrained.cc: Likewise.
2352         * testsuite/25_algorithms/includes/constrained.cc: Likewise.
2353         * testsuite/25_algorithms/is_heap/constexpr.cc: Likewise.
2354         * testsuite/25_algorithms/is_heap_until/constexpr.cc: Likewise.
2355         * testsuite/25_algorithms/is_permutation/constrained.cc: Include
2356         <iterator>.
2357         * testsuite/25_algorithms/is_sorted/constexpr.cc: Include
2358         <functional>.
2359         * testsuite/25_algorithms/is_sorted_until/constexpr.cc:
2360         Likewise.
2361         * testsuite/25_algorithms/lexicographical_compare/constexpr.cc:
2362         Likewise.
2363         * testsuite/25_algorithms/lexicographical_compare/constrained.cc:
2364         Likewise.
2365         * testsuite/25_algorithms/lexicographical_compare_three_way/1.cc:
2366         Include <array>.
2367         * testsuite/25_algorithms/lower_bound/constexpr.cc: Include
2368         <functional>.
2369         * testsuite/25_algorithms/max/constrained.cc: Likewise.
2370         * testsuite/25_algorithms/max_element/constrained.cc: Likewise.
2371         * testsuite/25_algorithms/min/constrained.cc: Likewise.
2372         * testsuite/25_algorithms/min_element/constrained.cc: Likewise.
2373         * testsuite/25_algorithms/minmax_element/constrained.cc:
2374         Likewise.
2375         * testsuite/25_algorithms/mismatch/constexpr.cc: Likewise.
2376         * testsuite/25_algorithms/move/93872.cc: Likewise.
2377         * testsuite/25_algorithms/move_backward/93872.cc: Include
2378         <iterator>.
2379         * testsuite/25_algorithms/nth_element/constexpr.cc: Include
2380         <functional>.
2381         * testsuite/25_algorithms/partial_sort/constexpr.cc: Likewise.
2382         * testsuite/25_algorithms/partial_sort_copy/constexpr.cc:
2383         Likewise.
2384         * testsuite/25_algorithms/search/constexpr.cc: Likewise.
2385         * testsuite/25_algorithms/search_n/constrained.cc: Likewise.
2386         * testsuite/25_algorithms/set_difference/constexpr.cc: Likewise.
2387         * testsuite/25_algorithms/set_difference/constrained.cc:
2388         Likewise.
2389         * testsuite/25_algorithms/set_intersection/constexpr.cc:
2390         Likewise.
2391         * testsuite/25_algorithms/set_intersection/constrained.cc:
2392         Likewise.
2393         * testsuite/25_algorithms/set_symmetric_difference/constexpr.cc:
2394         Likewise.
2395         * testsuite/25_algorithms/set_union/constexpr.cc: Likewise.
2396         * testsuite/25_algorithms/set_union/constrained.cc: Likewise.
2397         * testsuite/25_algorithms/sort/constexpr.cc: Likewise.
2398         * testsuite/25_algorithms/sort_heap/constexpr.cc: Likewise.
2399         * testsuite/25_algorithms/transform/constrained.cc: Likewise.
2400         * testsuite/25_algorithms/unique/constexpr.cc: Likewise.
2401         * testsuite/25_algorithms/unique/constrained.cc: Likewise.
2402         * testsuite/25_algorithms/unique_copy/constexpr.cc: Likewise.
2403         * testsuite/25_algorithms/upper_bound/constexpr.cc: Likewise.
2404         * testsuite/std/ranges/adaptors/elements.cc: Include <vector>.
2405         * testsuite/std/ranges/adaptors/lazy_split.cc: Likewise.
2406         * testsuite/std/ranges/adaptors/split.cc: Likewise.
2407
2408 2022-03-17  Jonathan Wakely  <jwakely@redhat.com>
2409
2410         PR libstdc++/92546
2411         * include/bits/fs_path.h (path::make_preferred): Use
2412         handwritten loop instead of std::replace.
2413
2414 2022-03-17  Jonathan Wakely  <jwakely@redhat.com>
2415
2416         PR middle-end/104966
2417         * include/bits/locale_facets_nonio.tcc
2418         (__moneypunct_cache::_M_cache): Replace try-catch with RAII and
2419         make all string copies before any stores to *this.
2420
2421 2022-03-17  Jonathan Wakely  <jwakely@redhat.com>
2422
2423         * testsuite/util/testsuite_character.h: Fix comment.
2424
2425 2022-03-16  Jonathan Wakely  <jwakely@redhat.com>
2426
2427         PR libstdc++/103407
2428         * config/abi/pre/gnu.ver: Make version for std::from_chars
2429         depend on HAVE_USELOCALE macro.
2430         * testsuite/util/testsuite_abi.cc (compare_symbols): Treat
2431         std::from_chars for floating-point types as undesignated if
2432         not found in the baseline symbols file.
2433
2434 2022-03-16  Jonathan Wakely  <jwakely@redhat.com>
2435
2436         * include/std/charconv (__cpp_lib_to_chars): Only define when
2437         both from_chars and to_chars are supported for floating-point
2438         types.
2439         (from_chars, to_chars): Adjust preprocessor conditions guarding
2440         declarations.
2441         * include/std/version (__cpp_lib_to_chars): Adjust condition to
2442         match <charconv> definition.
2443         * src/c++17/floating_from_chars.cc (from_chars_strtod): New
2444         function template.
2445         (from_chars): Simplify preprocessor checks and use
2446         from_chars_strtod when appropriate.
2447
2448 2022-03-14  Jonathan Wakely  <jwakely@redhat.com>
2449
2450         PR libstdc++/104875
2451         * src/c++11/codecvt.cc (read_utf8_code_point): Use char32_t to
2452         hold octets that will be left-shifted.
2453
2454 2022-03-10  Jonathan Wakely  <jwakely@redhat.com>
2455
2456         PR libstdc++/104870
2457         * src/c++17/floating_from_chars.cc: Check __SIZE_WIDTH__ >= 32
2458         before using fast_float.
2459
2460 2022-03-10  Detlef Vollmann  <dv@vollmann.ch>
2461
2462         PR libstdc++/104866
2463         * include/bits/this_thread_sleep.h: Fix order of #endif and
2464         closing brace of namespace.
2465
2466 2022-03-10  Jonathan Wakely  <jwakely@redhat.com>
2467
2468         * libsupc++/compare (_Strong_order::_S_fp_cmp) [__vax__]:
2469         Handle NaN.
2470
2471 2022-03-10  Jonathan Wakely  <jwakely@redhat.com>
2472
2473         * libsupc++/compare (_Strong_ordering::_S_fp_cmp) [__vax__]: Use
2474         <=> comparison.
2475
2476 2022-03-09  Patrick Palka  <ppalka@redhat.com>
2477
2478         PR libstdc++/104859
2479         * src/c++17/floating_to_chars.cc (__floating_to_chars_hex):
2480         Be explicit when narrowing the shifted effective_mantissa,
2481         since it may have an integer-class type.
2482
2483 2022-03-08  Jonathan Wakely  <jwakely@redhat.com>
2484
2485         * include/bits/uses_allocator_args.h: Remove incorrect copyright
2486         notice.
2487
2488 2022-03-07  Jonathan Wakely  <jwakely@redhat.com>
2489
2490         PR libstdc++/104807
2491         * include/bits/c++config (__terminate, __glibcxx_assert_fail):
2492         Replace _GLIBCXX_VISIBILITY on function with visibility pragma.
2493         (__is_constant_evaluated): Add visibility pragma.
2494
2495 2022-03-07  Rasmus Villemoes  <rasmus.villemoes@prevas.dk>
2496
2497         * config/locale/vxworks/ctype_members.cc: Remove <iostream>
2498           include.
2499
2500 2022-03-05  Jonathan Wakely  <jwakely@redhat.com>
2501
2502         * include/bits/c++config (__glibcxx_assert_fail): Add visibility
2503         attribute.
2504         (__terminate): Likewise.
2505
2506 2022-03-04  Jonathan Wakely  <jwakely@redhat.com>
2507
2508         * libsupc++/compare (strong_order::_S_fp_cmp): Move typedef
2509         inside #if condition.
2510
2511 2022-03-03  Jonathan Wakely  <jwakely@redhat.com>
2512
2513         PR libstdc++/104748
2514         * testsuite/std/ranges/adaptors/all.cc: Use non-debug vector for
2515         constexpr test.
2516
2517 2022-03-03  Jonathan Wakely  <jwakely@redhat.com>
2518
2519         * testsuite/17_intro/names.cc (func): Undef on AIX.
2520
2521 2022-03-03  Jonathan Wakely  <jwakely@redhat.com>
2522
2523         PR libstdc++/96526
2524         * libsupc++/compare (strong_order): Add missing support for
2525         floating-point types.
2526         * testsuite/18_support/comparisons/algorithms/strong_order_floats.cc:
2527         New test.
2528
2529 2022-03-01  Jonathan Wakely  <jwakely@redhat.com>
2530
2531         PR middle-end/103984
2532         * include/bits/regex_compiler.h (_BracketMatcher::_M_char): Use
2533         default member initializer.
2534
2535 2022-02-24  Jonathan Wakely  <jwakely@redhat.com>
2536
2537         PR libstdc++/104602
2538         * include/std/source_location (source_location::current): Use
2539         deduced type of __builtin_source_location().
2540
2541 2022-02-22  Patrick Palka  <ppalka@redhat.com>
2542
2543         * include/bits/ranges_base.h (__detail::__is_initializer_list):
2544         Define.
2545         (viewable_range): Adjust as per P2415R2.
2546         * include/bits/ranges_cmp.h (__cpp_lib_ranges): Adjust value.
2547         * include/std/ranges (owning_view): Define as per P2415R2.
2548         (enable_borrowed_range<owning_view>): Likewise.
2549         (views::__detail::__can_subrange): Replace with ...
2550         (views::__detail::__can_owning_view): ... this.
2551         (views::_All::_S_noexcept): Sync with operator().
2552         (views::_All::operator()): Use owning_view instead of subrange
2553         as per P2415R2.
2554         * include/std/version (__cpp_lib_ranges): Adjust value.
2555         * testsuite/std/ranges/adaptors/all.cc (test06): Adjust now that
2556         views::all uses owning_view instead of subrange.
2557         (test08): New test.
2558         * testsuite/std/ranges/adaptors/lazy_split.cc (test09): Adjust
2559         now that rvalue non-view non-borrowed ranges are viewable.
2560         * testsuite/std/ranges/adaptors/split.cc (test06): Likewise.
2561
2562 2022-02-17  Jonathan Wakely  <jwakely@redhat.com>
2563
2564         PR libstdc++/104559
2565         * doc/xml/manual/evolution.xml: Document deprecation.
2566         * doc/html/manual/api.html: Regenerate.
2567         * include/bits/stl_bvector.h (insert(const_iterator, const bool&)):
2568         Remove default argument.
2569         (insert(const_iterator)): New overload with deprecated attribute.
2570         * testsuite/23_containers/vector/bool/modifiers/insert/104559.cc:
2571         New test.
2572
2573 2022-02-17  Jonathan Wakely  <jwakely@redhat.com>
2574
2575         * python/libstdcxx/v6/printers.py (StdErrorCodePrinter): Replace
2576         code that call cat->name() on std::error_category objects.
2577         Identify known categories by symbol name and use a hardcoded
2578         name. Print error code values as enumerators where appopriate.
2579         * testsuite/libstdc++-prettyprinters/cxx11.cc: Adjust expected
2580         name of custom category. Check io_errc and future_errc errors.
2581
2582 2022-02-15  Jonathan Wakely  <jwakely@redhat.com>
2583
2584         PR libstdc++/104542
2585         * include/bits/uses_allocator_args.h (make_obj_using_allocator)
2586         (uninitialized_construct_using_allocator): Add constexpr.
2587         * testsuite/20_util/uses_allocator/make_obj.cc: Check constexpr.
2588         * testsuite/20_util/uses_allocator/uninitialized_construct.cc: New test.
2589
2590 2022-02-14  Jonathan Wakely  <jwakely@redhat.com>
2591
2592         PR libstdc++/100912
2593         * config/locale/gnu/c_locale.h (__convert_from_v): Use inline
2594         namespace for IEEE128 long double mode.
2595         * config/os/gnu-linux/ldbl-ieee128-extra.ver: Add new symbol
2596         version and export __gnu_cxx_ieee128::__convert_from_v.
2597         * include/bits/locale_facets_nonio.tcc (money_put::__do_put):
2598         Make __ibm128 overload use snprintf directly
2599         * testsuite/util/testsuite_abi.cc: Add new symbol version.
2600         Remove stable IEEE128/LDBL versions.
2601
2602 2022-02-14  Jonathan Wakely  <jwakely@redhat.com>
2603
2604         PR libstdc++/103891
2605         * include/bits/c++config (_GLIBCXX_HAVE_COND_TRIVIAL_SPECIAL_MEMBERS):
2606         Remove.
2607         * include/std/variant: Check feature test macros instead.
2608         * include/std/version: Likewise.
2609
2610 2022-02-14  Jonathan Wakely  <jwakely@redhat.com>
2611
2612         * testsuite/20_util/unsynchronized_pool_resource/allocate.cc:
2613         Fix typo.
2614
2615 2022-02-14  Jonathan Wakely  <jwakely@redhat.com>
2616
2617         * src/c++17/floating_to_chars.cc (FLOAT128_TO_CHARS): Depend on
2618         LONG_DOUBLE_ALT128_COMPAT instead of USE_FLOAT128.
2619
2620 2022-02-11  Jonathan Wakely  <jwakely@redhat.com>
2621
2622         * testsuite/20_util/temporary_buffer.cc: Fix dg-warning target
2623         selector.
2624
2625 2022-02-11  Jonathan Wakely  <jwakely@redhat.com>
2626
2627         * testsuite/20_util/monotonic_buffer_resource/allocate.cc:
2628         Ignore -Walloc-larger-than warning.
2629         * testsuite/20_util/unsynchronized_pool_resource/allocate.cc:
2630         Likewise.
2631         * testsuite/29_atomics/atomic/cons/user_pod.cc: Compile with -O1
2632         to avoid linker error for __atomic_is_lock_free.
2633
2634 2022-02-10  Thomas Rodgers  <rodgert@appliantology.com>
2635
2636         * include/bits/atomic_wait.h (__waiter_base::_S_do_spin,
2637         __waiter_base::_S_do_spin_v): Change memory order from relaxed
2638         to acquire.
2639
2640 2022-02-10  Jonathan Wakely  <jwakely@redhat.com>
2641
2642         * include/c_compatibility/stdatomic.h (atomic_fetch_xor): Add
2643         using-declaration.
2644         (atomic_fetch_xor_explicit): Likewise.
2645         * testsuite/29_atomics/headers/stdatomic.h/c_compat.cc: Check
2646         arithmetic and logical operations for atomic_int.
2647
2648 2022-02-10  Jonathan Wakely  <jwakely@redhat.com>
2649
2650         * src/filesystem/dir-common.h (_GLIBCXX_HAVE_DIRFD): Undefine
2651         when <dirent.h> is not available.
2652         (_GLIBCXX_HAVE_UNLINKAT):  Likewise.
2653
2654 2022-02-09  Thomas Rodgers  <rodgert@appliantology.com>
2655
2656         PR libstdc++/104442
2657         * include/bits/atomic_wait.h (__waiter::_M_do_wait_v): Move spin
2658          loop inside do loop so that threads failing the wait, reload
2659          _M_ver.
2660
2661 2022-02-08  Jonathan Wakely  <jwakely@redhat.com>
2662
2663         * src/c++17/fs_dir.cc (_Dir(DIR*, const path&)): Change first
2664         parameter to _Dir_base&&.
2665         * src/filesystem/dir-common.h (_Dir_base(DIR*)): Remove.
2666         * src/filesystem/dir.cc (_Dir(DIR*, const path&)): Change first
2667         parameter to _Dir_base&&.
2668
2669 2022-02-08  Jonathan Wakely  <jwakely@redhat.com>
2670
2671         * acinclude.m4 (GLIBCXX_ENABLE_LOCK_POLICY): Add comment about
2672         checking for CAS on correct word size.
2673
2674 2022-02-08  Jonathan Wakely  <jwakely@redhat.com>
2675
2676         * testsuite/experimental/filesystem/operations/create_directories.cc:
2677         Adjust expected results for Windows.
2678
2679 2022-02-08  Jonathan Wakely  <jwakely@redhat.com>
2680
2681         PR libstdc++/104161
2682         * src/c++17/fs_dir.cc (fs::recursive_directory_iterator::__erase):
2683         [i_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Refresh entry._M_type member,
2684         instead of checking for errno values indicating a directory.
2685         * src/c++17/fs_ops.cc (fs::remove_all(const path&)): Use similar
2686         logic to non-throwing overload.
2687         (fs::remove_all(const path&, error_code&)): Add comments.
2688         * src/filesystem/ops-common.h: Likewise.
2689
2690 2022-02-04  Jonathan Wakely  <jwakely@redhat.com>
2691
2692         * src/filesystem/dir-common.h (_Dir_base::openat): Change return
2693         type to use portable posix::DIR alias.
2694
2695 2022-02-04  Jonathan Wakely  <jwakely@redhat.com>
2696
2697         * include/c_compatibility/stdatomic.h [__clang__]: Use
2698         #include_next <stdatomic.h>.
2699
2700 2022-02-04  Jonathan Wakely  <jwakely@redhat.com>
2701
2702         * include/experimental/bits/fs_ops.h (fs::copy_file): Remove
2703         noexcept.
2704         (fs::create_directories): Likewise.
2705         (fs::remove_all): Likewise.
2706         * src/filesystem/ops.cc (fs::copy_file): Remove noexcept.
2707         (fs::create_directories): Likewise.
2708         (fs::remove_all): Likewise.
2709
2710 2022-02-04  Jonathan Wakely  <jwakely@redhat.com>
2711
2712         PR libstdc++/104161
2713         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for dirfd
2714         and unlinkat.
2715         * config.h.in: Regenerate.
2716         * configure: Regenerate.
2717         * include/bits/fs_dir.h (recursive_directory_iterator): Declare
2718         remove_all overloads as friends.
2719         (recursive_directory_iterator::__erase): Declare new member
2720         function.
2721         * include/bits/fs_fwd.h (remove, remove_all): Declare.
2722         * src/c++17/fs_dir.cc (_Dir): Add filename_only parameter to
2723         constructor. Pass file descriptor argument to base constructor.
2724         (_Dir::dir_and_pathname, _Dir::open_subdir, _Dir::do_unlink)
2725         (_Dir::unlink, _Dir::rmdir): Define new member functions.
2726         (directory_iterator): Pass filename_only argument to _Dir
2727         constructor.
2728         (recursive_directory_iterator::_Dir_stack): Adjust constructor
2729         parameters to take a _Dir rvalue instead of creating one.
2730         (_Dir_stack::orig): Add data member for storing original path.
2731         (_Dir_stack::report_error): Define new member function.
2732         (__directory_iterator_nofollow): Move here from dir-common.h and
2733         fix value to be a power of two.
2734         (__directory_iterator_filename_only): Define new constant.
2735         (recursive_directory_iterator): Construct _Dir object and move
2736         into _M_dirs stack. Pass skip_permission_denied argument to first
2737         advance call.
2738         (recursive_directory_iterator::increment): Use _Dir::open_subdir.
2739         (recursive_directory_iterator::__erase): Define new member
2740         function.
2741         * src/c++17/fs_ops.cc (ErrorReporter, do_remove_all): Remove.
2742         (fs::remove_all): Use new recursive_directory_iterator::__erase
2743         member function.
2744         * src/filesystem/dir-common.h (_Dir_base): Add int parameter to
2745         constructor and use openat to implement nofollow semantics.
2746         (_Dir_base::fdcwd, _Dir_base::set_close_on_exec, _Dir_base::openat):
2747         Define new member functions.
2748         (__directory_iterator_nofollow): Move to fs_dir.cc.
2749         * src/filesystem/dir.cc (_Dir): Pass file descriptor argument to
2750         base constructor.
2751         (_Dir::dir_and_pathname, _Dir::open_subdir): Define new member
2752         functions.
2753         (recursive_directory_iterator::_Dir_stack): Adjust constructor
2754         parameters to take a _Dir rvalue instead of creating one.
2755         (recursive_directory_iterator): Check for new nofollow option.
2756         Construct _Dir object and move into _M_dirs stack. Pass
2757         skip_permission_denied argument to first advance call.
2758         (recursive_directory_iterator::increment): Use _Dir::open_subdir.
2759         * src/filesystem/ops.cc (fs::remove_all): Use C++17 remove_all.
2760
2761 2022-02-04  Jonathan Wakely  <jwakely@redhat.com>
2762
2763         * include/bits/allocator.h: Qualify std::allocator_traits in
2764         deprecated warnings.
2765         * libsupc++/exception (uncaught_exception): Add suggestion to
2766         deprecated warning.
2767
2768 2022-02-02  Jonathan Wakely  <jwakely@redhat.com>
2769
2770         * src/c++17/fs_dir.cc (fs::recursive_directory_iterator::pop):
2771         Add [[maybe_unused]] attribute.
2772         * src/filesystem/dir.cc (fs::recursive_directory_iterator::pop):
2773         Likewise.
2774
2775 2022-02-02  Jonathan Wakely  <jwakely@redhat.com>
2776
2777         * testsuite/23_containers/multiset/operators/cmp_c++20.cc: Use
2778         custom comparison function for multiset.
2779         * testsuite/23_containers/set/operators/cmp_c++20.cc: Use custom
2780         comparison function for set.
2781
2782 2022-02-02  Jonathan Wakely  <jwakely@redhat.com>
2783
2784         * include/bits/boost_concept_check.h (_OutputIteratorConcept):
2785         Change member function to data member of function pointer type.
2786
2787 2022-02-02  Martin Sebor  <msebor@redhat.com>
2788
2789         PR libstdc++/101831
2790         * include/std/array (begin): Declare const member function attribute
2791         const.
2792         (end, rbegin, rend, size, max_size, empty, data): Same.
2793         * testsuite/23_containers/array/capacity/empty.cc: Add test cases.
2794         * testsuite/23_containers/array/capacity/max_size.cc: Same.
2795         * testsuite/23_containers/array/capacity/size.cc: Same.
2796         * testsuite/23_containers/array/iterators/begin_end.cc: New test.
2797
2798 2022-02-02  Jonathan Wakely  <jwakely@redhat.com>
2799
2800         * testsuite/27_io/filesystem/iterators/error_reporting.cc: Use
2801         autoconf macro to check whether d_type is present.
2802         * testsuite/experimental/filesystem/iterators/error_reporting.cc:
2803         Likewise.
2804
2805 2022-02-01  Jonathan Wakely  <jwakely@redhat.com>
2806
2807         * testsuite/27_io/filesystem/iterators/97731.cc: New test.
2808         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
2809         Check follow_directory_symlink option.
2810         * testsuite/experimental/filesystem/iterators/recursive_directory_iterator.cc:
2811         Likewise.
2812
2813 2022-02-01  Jonathan Wakely  <jwakely@redhat.com>
2814
2815         * src/c++17/fs_dir.cc (recursive_directory_iterator::increment):
2816         Reset state to past-the-end iterator on error.
2817         (fs::recursive_directory_iterator::pop(error_code&)): Likewise.
2818         (fs::recursive_directory_iterator::pop()): Check _M_dirs before
2819         it might get reset.
2820         * src/filesystem/dir.cc (recursive_directory_iterator): Likewise,
2821         for the TS implementation.
2822         * testsuite/27_io/filesystem/iterators/error_reporting.cc: New test.
2823         * testsuite/experimental/filesystem/iterators/error_reporting.cc: New test.
2824
2825 2022-02-01  Jonathan Wakely  <jwakely@redhat.com>
2826
2827         * include/bits/fs_fwd.h (filesystem::perms): Fix comment.
2828
2829 2022-02-01  Jonathan Wakely  <jwakely@redhat.com>
2830
2831         PR libstdc++/104301
2832         * acinclude.m4 (GLIBCXX_ENABLE_CSTDIO): Print different messages
2833         for stdio_pure and stdio_posix options.
2834         * configure: Regenerate.
2835
2836 2022-02-01  Thomas Rodgers  <rodgert@appliantology.com>
2837
2838         * include/bits/atomic_wait.h: Change memory order from
2839         Acquire/Release with relaxed loads to SeqCst+Release for
2840         accesses to the waiter's count.
2841
2842 2022-01-31  Martin Liska  <mliska@suse.cz>
2843
2844         * acinclude.m4: Detect *_ld_is_mold and use it.
2845         * configure: Regenerate.
2846
2847 2022-01-30  Hans-Peter Nilsson  <hp@axis.com>
2848
2849         * testsuite/27_io/basic_istream/get/char/lwg3464.cc: Don't run on
2850         simulator targets.
2851         * testsuite/27_io/basic_istream/get/wchar_t/lwg3464.cc: Likewise.
2852
2853 2022-01-27  Jonathan Wakely  <jwakely@redhat.com>
2854
2855         PR libstdc++/100516
2856         * include/bits/deque.tcc (_M_range_initialize<ForwardIterator>):
2857         Add __builtin_unreachable to loop.
2858         * testsuite/23_containers/deque/100516.cc: New test.
2859
2860 2022-01-27  Jonathan Wakely  <jwakely@redhat.com>
2861
2862         * include/bits/ranges_base.h (ranges::advance): Avoid signed
2863         overflow. Do nothing if already equal to desired result.
2864         * testsuite/24_iterators/range_operations/advance_overflow.cc:
2865         New test.
2866
2867 2022-01-27  Martin Liska  <mliska@suse.cz>
2868
2869         PR libstdc++/104259
2870         * acinclude.m4: Fix typo.
2871         * configure: Regenerate.
2872
2873 2022-01-25  Jonathan Wakely  <jwakely@redhat.com>
2874
2875         PR libstdc++/104019
2876         * include/bits/istream.tcc (basic_istream::sentry): Add braces
2877         around try-block.
2878         * include/bits/shared_ptr_base.h (_Sp_counted_array_base::_M_init):
2879         Add pragmas to disable bogus warnings from PR 61596.
2880
2881 2022-01-25  Jonathan Wakely  <jwakely@redhat.com>
2882
2883         PR libstdc++/104217
2884         * src/c++17/fs_ops.cc (_GNU_SOURCE): Define.
2885         * src/filesystem/dir.cc (_GNU_SOURCE): Define.
2886         * src/filesystem/ops.cc (_GNU_SOURCE): Define.
2887
2888 2022-01-25  Jonathan Wakely  <jwakely@redhat.com>
2889
2890         PR libstdc++/104161
2891         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for
2892         fdopendir.
2893         * config.h.in: Regenerate.
2894         * configure: Regenerate.
2895         * src/c++17/fs_dir.cc (_Dir): Add nofollow flag to constructor
2896         and pass it to base class constructor.
2897         (directory_iterator): Pass nofollow flag to _Dir constructor.
2898         (fs::recursive_directory_iterator::increment): Likewise.
2899         * src/c++17/fs_ops.cc (do_remove_all): Use nofollow option for
2900         directory_iterator constructor. Move error check outside loop.
2901         * src/filesystem/dir-common.h (_Dir_base): Add nofollow flag to
2902         constructor and when it's set use ::open with O_NOFOLLOW and
2903         O_DIRECTORY.
2904         * src/filesystem/dir.cc (_Dir): Add nofollow flag to constructor
2905         and pass it to base class constructor.
2906         (directory_iterator): Pass nofollow flag to _Dir constructor.
2907         (fs::recursive_directory_iterator::increment): Likewise.
2908         * src/filesystem/ops.cc (remove_all): Use nofollow option for
2909         directory_iterator constructor. Move error check outside loop.
2910
2911 2022-01-23  Jonathan Wakely  <jwakely@redhat.com>
2912
2913         PR libstdc++/104032
2914         * include/std/spanstream (basic_spanbuf(basic_spanbuf&&)): Use
2915         mem-initializer for _M_buf.
2916         (basic_spanbuf::Operator=(basic_spanbuf&&)): Fix ill-formed
2917         member access.
2918         * testsuite/27_io/spanstream/2.cc: New test.
2919
2920 2022-01-23  Jonathan Wakely  <jwakely@redhat.com>
2921
2922         * src/c++17/floating_from_chars.cc (USE_STRTOD_FOR_FROM_CHARS):
2923         Define macro for case where std::from_chars is implemented in
2924         terms of strtod, strtof or strtold.
2925         (buffer_resource, valid_fmt, find_end_of_float, pattern)
2926         (from_chars_impl, make_result, reserve_string): Do not define
2927         unless USE_STRTOD_FOR_FROM_CHARS is defined.
2928         (from_chars): Define when at least one of USE_LIB_FAST_FLOAT and
2929         USE_STRTOD_FOR_FROM_CHARS is defined, instead of
2930         _GLIBCXX_HAVE_USELOCALE. Use fast_float for long double when it
2931         is binary64.
2932
2933 2022-01-23  Jonathan Wakely  <jwakely@redhat.com>
2934
2935         PR libstdc++/104174
2936         * include/bits/hashtable_policy.h (_Map_base): Add partial
2937         specialization for maps with const key types.
2938         * testsuite/23_containers/unordered_map/104174.cc: New test.
2939
2940 2022-01-23  Jonathan Wakely  <jwakely@redhat.com>
2941
2942         PR libstdc++/104019
2943         * include/bits/shared_ptr_base.h (_Sp_counted_base<>::_M_release):
2944         Set members to zero without type punning.
2945
2946 2022-01-21  Jonathan Wakely  <jwakely@redhat.com>
2947
2948         * testsuite/20_util/shared_ptr/cons/array.cc: Fix comment.
2949
2950 2022-01-21  Jonathan Wakely  <jwakely@redhat.com>
2951
2952         PR libstdc++/87193
2953         PR libstdc++/104019
2954         * include/bits/alloc_traits.h (__cpp_lib_allocator_traits_is_always_equal):
2955         Define as type long.
2956         * include/bits/allocator.h (__cpp_lib_incomplete_container_elements):
2957         Likewise.
2958         * include/bits/basic_string.h (__cpp_lib_string_udls): Likewise.
2959         * include/bits/chrono.h (__cpp_lib_chrono): Likewise.
2960         (__cpp_lib_chrono_udls): Likewise.
2961         * include/bits/move.h (__cpp_lib_addressof_constexpr): Likewise.
2962         * include/bits/node_handle.h (__cpp_lib_node_extract): Likewise.
2963         * include/bits/range_access.h (__cpp_lib_nonmember_container_access):
2964         Likewise.
2965         * include/bits/shared_ptr.h (__cpp_lib_enable_shared_from_this):
2966         Likewise.
2967         * include/bits/stl_algo.h (__cpp_lib_clamp): Likewise.
2968         (__cpp_lib_sample): Likewise.
2969         * include/bits/stl_algobase.h (__cpp_lib_robust_nonmodifying_seq_ops):
2970         Likewise.
2971         * include/bits/stl_function.h (__cpp_lib_transparent_operators):
2972         Likewise.
2973         * include/bits/stl_iterator.h (__cpp_lib_make_reverse_iterator):
2974         Likewise.
2975         * include/bits/stl_map.h (__cpp_lib_map_try_emplace):
2976         Likewise.
2977         * include/bits/stl_tree.h (__cpp_lib_generic_associative_lookup):
2978         Likewise.
2979         * include/bits/unique_ptr.h (__cpp_lib_make_unique):
2980         Likewise.
2981         * include/bits/unordered_map.h (__cpp_lib_unordered_map_try_emplace):
2982         Likewise.
2983         * include/c_global/cmath (__cpp_lib_hypot): Likewise.
2984         * include/c_global/cstddef (__cpp_lib_byte): Likewise.
2985         * include/std/atomic (__cpp_lib_atomic_is_always_lock_free):
2986         Likewise.
2987         * include/std/complex (__cpp_lib_complex_udls): Likewise.
2988         * include/std/filesystem (__cpp_lib_filesystem): Likewise.
2989         * include/std/functional (__cpp_lib_not_fn): Likewise.
2990         (__cpp_lib_boyer_moore_searcher): Likewise.
2991         * include/std/iomanip (__cpp_lib_quoted_string_io): Likewise.
2992         * include/std/mutex (__cpp_lib_scoped_lock): Likewise.
2993         * include/std/numeric (__cpp_lib_gcd_lcm): Likewise.
2994         (__cpp_lib_gcd, __cpp_lib_lcm): Likewise.
2995         * include/std/tuple (__cpp_lib_apply): Likewise.
2996         (__cpp_lib_make_from_tuple): Likewise.
2997         * include/std/type_traits (__cpp_lib_integral_constant_callable)
2998         (__cpp_lib_bool_constant, __cpp_lib_logical_traits)
2999         (__cpp_lib_is_null_pointer, __cpp_lib_transformation_trait_aliases)
3000         (__cpp_lib_result_of_sfinae, __cpp_lib_void_t)
3001         (__cpp_lib_is_swappable, __cpp_lib_is_invocable)
3002         (__cpp_lib_has_unique_object_representations)
3003         (__cpp_lib_is_aggregate): Likewise.
3004         * include/std/version: Likewise.
3005         * libsupc++/new (__cpp_lib_launder): Likewise.
3006
3007 2022-01-21  Jonathan Wakely  <jwakely@redhat.com>
3008
3009         * include/std/version (__cpp_lib_shared_ptr_arrays): Fix
3010         condition for C++17 definition.
3011
3012 2022-01-21  Jonathan Wakely  <jwakely@redhat.com>
3013
3014         * include/bits/shared_ptr_atomic.h (_Sp_atomic::_Atomic_count):
3015         Add constexpr.
3016         (_Sp_atomic::_M_ptr): Add default member-initializer.
3017         * testsuite/20_util/shared_ptr/atomic/atomic_shared_ptr.cc:
3018         Check constant initialization.
3019         * testsuite/20_util/weak_ptr/atomic_weak_ptr.cc: Likewise.
3020
3021 2022-01-20  Jonathan Wakely  <jwakely@redhat.com>
3022
3023         * src/c++11/cxx11-ios_failure.cc (__constinit): Define as
3024         equivalent attribute for Clang.
3025         * src/c++11/future.cc (__constinit): Likewise.
3026         * src/c++11/system_error.cc (__constinit): Likewise.
3027         * src/c++17/memory_resource.cc (__constinit): Likewise.
3028
3029 2022-01-20  Jonathan Wakely  <jwakely@redhat.com>
3030
3031         * scripts/testsuite_flags.in: Only add src/filesystem/.libs and
3032         src/libbacktrace/.libs to LDFLAGS if those directories exist.
3033
3034 2022-01-19  Jonathan Wakely  <jwakely@redhat.com>
3035
3036         * configure.ac (GLIBCXX_ENABLE_DEBUG_FLAGS): Remove -gdwarf-4
3037         from default flags.
3038         * configure: Regenerate.
3039
3040 2022-01-19  Jonathan Wakely  <jwakely@redhat.com>
3041
3042         PR libstdc++/104123
3043         * testsuite/29_atomics/headers/stdatomic.h/c_compat.cc: Include
3044         <stddef.h>.
3045
3046 2022-01-19  Jonathan Wakely  <jwakely@redhat.com>
3047
3048         * scripts/testsuite_flags.in: Add src/libbacktrace/.libs to
3049         linker search paths.
3050         * src/Makefile.am: Fix src/debug/libbacktrace build.
3051         * src/Makefile.in: Regenerate.
3052         * src/libbacktrace/Makefile.am: Use per-library CPPFLAGS
3053         variable. Use symlinks for the source files.
3054         * src/libbacktrace/Makefile.in: Regenerate.
3055
3056 2022-01-19  Matthias Kretz  <m.kretz@gsi.de>
3057
3058         * include/experimental/bits/simd.h (__floating_point_flags): Do
3059         not rely on math_errhandling to expand to a constant expression.
3060
3061 2022-01-19  Jonathan Wakely  <jwakely@redhat.com>
3062
3063         * doc/xml/manual/evolution.xml: Document deprecations.
3064         * doc/xml/manual/status_cxx2017.xml: Update status.
3065         * doc/html/*: Regenerate.
3066
3067 2022-01-19  Jonathan Wakely  <jwakely@redhat.com>
3068
3069         * include/bits/stl_tempbuf.h (get_temporary_buffer): Change
3070         _GLIBCXX14_DEPRECATED to _GLIBCXX17_DEPRECATED.
3071
3072 2022-01-19  Jonathan Wakely  <jwakely@redhat.com>
3073
3074         * include/bits/stl_pair.h (_PCC::_DeprConsPair): Remove unused
3075         function.
3076
3077 2022-01-19  Jonathan Wakely  <jwakely@redhat.com>
3078
3079         PR libstdc++/104101
3080         * include/bits/shared_ptr_atomic.h (_Sp_atomic::_Atomic_count::lock):
3081         Only use __thread_relax if __cpp_lib_atomic_wait is defined.
3082
3083 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
3084
3085         PR libstdc++/104099
3086         * include/bits/basic_string.h (basic_string(nullptr_t)): Only
3087         define for C++23.
3088         (operator=(nullptr_t)): Likewise.
3089         * include/bits/cow_string.h: Likewise.
3090         * include/std/string_view (basic_string_view(nullptr_t)):
3091         Likewise.
3092         * testsuite/21_strings/basic_string/cons/char/nullptr.cc: Adjust
3093         expected error. Add examples that become ill-formed in C++23.
3094         * testsuite/21_strings/basic_string_view/cons/char/nonnull.cc:
3095         Adjust expected errors.
3096         * testsuite/21_strings/basic_string_view/cons/wchar_t/nonnull.cc:
3097         Likewise.
3098
3099 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
3100
3101         PR libstdc++/104098
3102         * include/bits/stl_iterator.h (reverse_iterator): Check
3103         __cpp_lib_concepts instead of __cplusplus.
3104
3105 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
3106
3107         PR libstdc++/101124
3108         * include/bits/stl_pair.h (pair): Adjust constraints on
3109         deprecated constructors accepting literal zero as null pointer
3110         constant. Improve wording of deprecated attribute.
3111         * testsuite/20_util/pair/cons/99957.cc: Check that deprecated
3112         constructors do not cause ambiguities for copyable types.
3113
3114 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
3115
3116         * include/bits/stl_function.h (ptr_fun): Fix suggestion for
3117         non-deprecated alternative.
3118
3119 2022-01-18  Tom Honermann  <tom@honermann.net>
3120
3121         * acinclude.m4: Define config macros if uchar.h provides
3122         c8rtomb() and mbrtoc8().
3123         * config.h.in: Regenerate.
3124         * configure: Regenerate.
3125         * include/c_compatibility/uchar.h (c8rtomb, mbrtoc8): Define.
3126         * include/c_global/cuchar (c8rtomb, mbrtoc8): Likewise.
3127         * include/c_std/cuchar (c8rtomb, mbrtoc8): Likewise.
3128         * testsuite/21_strings/headers/cuchar/functions_std_cxx20.cc:
3129         New test.
3130         * testsuite/21_strings/headers/cuchar/functions_std_fchar8_t.cc:
3131         New test.
3132
3133 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
3134
3135         * include/Makefile.am: Install new header.
3136         * include/Makefile.in: Regenerate.
3137         * include/c_compatibility/stdatomic.h: New file.
3138         * testsuite/29_atomics/headers/stdatomic.h/c_compat.cc: New test.
3139
3140 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
3141
3142         PR libstdc++/104080
3143         * src/c++17/fast_float/LOCAL_PATCHES: Update.
3144         * src/c++17/fast_float/fast_float.h (FASTFLOAT_IS_BIG_ENDIAN):
3145         Define in terms of __BYTE_ORDER__.
3146
3147 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
3148
3149         PR libstdc++/104080
3150         * src/c++17/fast_float/LOCAL_PATCHES: UPDATE.
3151         * src/c++17/fast_float/fast_float.h (round): Use explicit
3152         template argument list for std::min.
3153
3154 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
3155
3156         * doc/xml/manual/status_cxx2017.xml: Update C++17 status.
3157         * doc/xml/manual/status_cxx2020.xml: Use 12.1 instead of 12 for
3158         upcoming release.
3159         * doc/html/manual/status.html: Regenerate.
3160
3161 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
3162
3163         * acinclude.m4 (GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING): Improve
3164         comments.
3165         * configure: Regenerate.
3166
3167 2022-01-17  Patrick Palka  <ppalka@redhat.com>
3168
3169         * src/c++17/floating_from_chars.cc: (USE_LIB_FAST_FLOAT):
3170         Conditionally define, and use it to conditionally include
3171         fast_float.
3172         (from_chars): Use fast_float for float and double when
3173         USE_LIB_FAST_FLOAT.
3174
3175 2022-01-17  Patrick Palka  <ppalka@redhat.com>
3176
3177         * src/c++17/fast_float/LOCAL_PATCHES: Update.
3178         * src/c++17/fast_float/fast_float.h (from_chars_advanced): In
3179         case of over/underflow, return errc::result_out_of_range and don't
3180         modify 'value'.
3181
3182 2022-01-17  Patrick Palka  <ppalka@redhat.com>
3183
3184         * src/c++17/fast_float/LOCAL_PATCHES: Update.
3185         * src/c++17/fast_float/fast_float.h: Apply local modifications.
3186
3187 2022-01-17  Patrick Palka  <ppalka@redhat.com>
3188
3189         * src/c++17/fast_float/LOCAL_PATCHES: New file.
3190         * src/c++17/fast_float/MERGE: New file.
3191         * src/c++17/fast_float/README.md: New file, copied from the
3192         fast_float repository.
3193         * src/c++17/fast_float/fast_float.h: New file, an amalgamation
3194         of the fast_float library.
3195
3196 2022-01-17  Patrick Palka  <ppalka@redhat.com>
3197
3198         * src/c++17/floating_from_chars.cc: Include <bit>.
3199         (ascii_to_hexit, starts_with_ci): Conditionally define.
3200         (__floating_from_chars_hex):  Conditionally define.
3201         (from_chars): Use __floating_from_chars_hex for
3202         chars_format::hex parsing of binary32/64 float/double.
3203         (testsuite/20_util/from_chars/7.cc): New test.
3204         * testsuite/20_util/from_chars/7.cc: New file.
3205
3206 2022-01-17  Jonathan Wakely  <jwakely@redhat.com>
3207
3208         * acinclude.m4 (GLIBCXX_ENABLE_BACKTRACE): New macro.
3209         * configure.ac: Use GLIBCXX_ENABLE_BACKTRACE.
3210         * include/Makefile.am: Add new header.
3211         * include/Makefile.in: Regenerate.
3212         * include/std/stacktrace: New header.
3213         * include/std/version (__cpp_lib_stacktrace): Define.
3214         * Makefile.in: Regenerate.
3215         * config.h.in: Regenerate.
3216         * configure: Regenerate.
3217         * doc/Makefile.in: Regenerate.
3218         * libsupc++/Makefile.in: Regenerate.
3219         * po/Makefile.in: Regenerate.
3220         * python/Makefile.in: Regenerate.
3221         * src/Makefile.am: Regenerate.
3222         * src/Makefile.in: Regenerate.
3223         * src/c++11/Makefile.in: Regenerate.
3224         * src/c++17/Makefile.in: Regenerate.
3225         * src/c++20/Makefile.in: Regenerate.
3226         * src/c++98/Makefile.in: Regenerate.
3227         * src/filesystem/Makefile.in: Regenerate.
3228         * testsuite/Makefile.in: Regenerate.
3229         * src/libbacktrace/Makefile.am: New file.
3230         * src/libbacktrace/Makefile.in: New file.
3231         * src/libbacktrace/backtrace-rename.h: New file.
3232         * src/libbacktrace/backtrace-supported.h.in: New file.
3233         * src/libbacktrace/config.h.in: New file.
3234         * testsuite/lib/libstdc++.exp (check_effective_target_stacktrace):
3235         New proc.
3236         * testsuite/20_util/stacktrace/entry.cc: New test.
3237         * testsuite/20_util/stacktrace/synopsis.cc: New test.
3238         * testsuite/20_util/stacktrace/version.cc: New test.
3239
3240 2022-01-17  Jonathan Wakely  <jwakely@redhat.com>
3241
3242         * doc/xml/manual/status_cxx2020.xml: Use final C++20 option
3243         names.
3244         * doc/html/manual/status.html: Regenerate.
3245
3246 2022-01-17  Jonathan Wakely  <jwakely@redhat.com>
3247
3248         PR libstdc++/103650
3249         * include/Makefile.am: Rename LT_OBJDIR and STDC_HEADERS.
3250         * include/Makefile.in: Regenerate.
3251         * testsuite/17_intro/headers/c++1998/103650.cc: New test.
3252
3253 2022-01-17  Matthias Kretz  <m.kretz@gsi.de>
3254
3255         * include/experimental/bits/simd.h (__floating_point_flags): Do
3256         not rely on the presence of the math_errhandling macro.
3257
3258 2022-01-17  Jonathan Wakely  <jwakely@redhat.com>
3259
3260         * include/bits/shared_ptr_atomic.h (_Sp_atomic): Add typename
3261         to qualified-id for dependent type.
3262
3263 2022-01-17  Jonathan Wakely  <jwakely@redhat.com>
3264
3265         * doc/xml/manual/status_cxx2020.xml: Update.
3266         * doc/html/manual/status.html: Regenerate.
3267
3268 2022-01-17  Jonathan Wakely  <jwakely@redhat.com>
3269             Thomas Rodgers  <trodgers@redhat.com>
3270
3271         * include/bits/shared_ptr_atomic.h (__cpp_lib_atomic_shared_ptr):
3272         New macro.
3273         (_Sp_atomic): New class template.
3274         (atomic<shared_ptr<T>>, atomic<weak_ptr<T>>): New partial
3275         specializations.
3276         * include/bits/shared_ptr_base.h (__shared_count, __weak_count)
3277         (__shared_ptr, __weak_ptr): Declare _Sp_atomic as a friend.
3278         * include/std/version (__cpp_lib_atomic_shared_ptr): New macro.
3279         * testsuite/20_util/shared_ptr/atomic/atomic_shared_ptr.cc: New
3280         test.
3281         * testsuite/20_util/weak_ptr/atomic_weak_ptr.cc: New test.
3282
3283 2022-01-15  Matthias Kretz  <m.kretz@gsi.de>
3284
3285         * include/experimental/bits/simd.h: Move feature detection bools
3286         and add __have_avx512bitalg, __have_avx512vbmi2,
3287         __have_avx512vbmi, __have_avx512ifma, __have_avx512cd,
3288         __have_avx512vnni, __have_avx512vpopcntdq.
3289         (__detail::__machine_flags): New function which returns a unique
3290         uint64 depending on relevant -m and -f flags.
3291         (__detail::__odr_helper): New type alias for either an anonymous
3292         type or a type specialized with the __machine_flags number.
3293         (_SimdIntOperators): Change template parameters from _Impl to
3294         _Tp, _Abi because _Impl now has an __odr_helper parameter which
3295         may be _OdrEnforcer from the anonymous namespace, which makes
3296         for a bad base class.
3297         (many): Either add __odr_helper template parameter or mark as
3298         always_inline.
3299         * include/experimental/bits/simd_detail.h: Add defines for
3300         AVX512BITALG, AVX512VBMI2, AVX512VBMI, AVX512IFMA, AVX512CD,
3301         AVX512VNNI, AVX512VPOPCNTDQ, and AVX512VP2INTERSECT.
3302         * include/experimental/bits/simd_builtin.h: Add __odr_helper
3303         template parameter or mark as always_inline.
3304         * include/experimental/bits/simd_fixed_size.h: Ditto.
3305         * include/experimental/bits/simd_math.h: Ditto.
3306         * include/experimental/bits/simd_scalar.h: Ditto.
3307         * include/experimental/bits/simd_neon.h: Add __odr_helper
3308         template parameter.
3309         * include/experimental/bits/simd_ppc.h: Ditto.
3310         * include/experimental/bits/simd_x86.h: Ditto.
3311
3312 2022-01-14  Uroš Bizjak  <ubizjak@gmail.com>
3313
3314         * testsuite/22_locale/numpunct/members/char/3.cc:
3315         Require pt_PT locale instead of nl_NL.
3316         (test02): Use pt_PT locale instead of nl_NL.
3317
3318 2022-01-14  Jonathan Wakely  <jwakely@redhat.com>
3319
3320         PR libstdc++/91260
3321         PR libstdc++/91383
3322         PR libstdc++/95065
3323         * include/backward/binders.h (bind1st, bind2nd): Add deprecated
3324         attribute.
3325         * include/bits/refwrap.h (_Maybe_unary_or_binary_function):
3326         Disable deprecated warnings for base classes.
3327         (_Reference_wrapper_base): Likewise.
3328         * include/bits/shared_ptr_base.h (_Sp_owner_less): Likewise.
3329         * include/bits/stl_bvector.h (_Bit_iterator_base): Likewise.
3330         * include/bits/stl_function.h (unary_function, binary_function):
3331         Add deprecated attribute.
3332         (unary_negate, not1, binary_negate, not2, ptr_fun)
3333         (pointer_to_unary_function, pointer_to_binary_function)
3334         (mem_fun_t, const_mem_fun_t, mem_fun_ref_t, const_mem_fun_ref_t)
3335         (mem_fun1_t, const_mem_fun1_t, mem_fun_ref1_t)
3336         (const_mem_fun1_ref_t, mem_fun, mem_fun_ref): Add deprecated
3337         attributes.
3338         * include/bits/stl_iterator.h: Disable deprecated warnings for
3339         std::iterator base classes.
3340         * include/bits/stl_iterator_base_types.h (iterator): Add
3341         deprecated attribute.
3342         * include/bits/stl_map.h (map::value_compare): Disable
3343         deprecated warnings for base class.
3344         * include/bits/stl_multimap.h (multimap::value_compare):
3345         Likewise.
3346         * include/bits/stl_raw_storage_iter.h (raw_storage_iterator):
3347         Add deprecated attribute.
3348         * include/bits/stl_tempbuf.h (get_temporary_buffer): Likewise.
3349         * include/bits/stream_iterator.h: Disable deprecated warnings.
3350         * include/bits/streambuf_iterator.h: Likewise.
3351         * include/ext/bitmap_allocator.h: Remove unary_function base
3352         classes.
3353         * include/ext/functional: Disable deprecated warnings.
3354         * include/ext/rope: Likewise.
3355         * include/ext/throw_allocator.h: Likewise.
3356         * include/std/type_traits (result_of): Add deprecated attribute.
3357         * include/tr1/functional: Disable deprecated warnings.
3358         * include/tr1/functional_hash.h: Likewise.
3359         * testsuite/20_util/function_objects/binders/1.cc: Add
3360         -Wno-disable-deprecations.
3361         * testsuite/20_util/function_objects/binders/3113.cc: Likewise.
3362         * testsuite/20_util/function_objects/constexpr.cc: Add
3363         dg-warning.
3364         * testsuite/20_util/raw_storage_iterator/base.cc: Likewise.
3365         * testsuite/20_util/raw_storage_iterator/dr2127.cc: Likewise.
3366         * testsuite/20_util/raw_storage_iterator/requirements/base_classes.cc:
3367         Likewise.
3368         * testsuite/20_util/raw_storage_iterator/requirements/explicit_instantiation/1.cc:
3369         Likewise.
3370         * testsuite/20_util/raw_storage_iterator/requirements/typedefs.cc:
3371         Likewise.
3372         * testsuite/20_util/reference_wrapper/24803.cc:
3373         Likewise.
3374         * testsuite/20_util/reference_wrapper/typedefs.cc: Enable for
3375         C++20 and check for absence of nested types.
3376         * testsuite/20_util/shared_ptr/comparison/less.cc: Remove
3377         std::binary_function base class.
3378         * testsuite/20_util/temporary_buffer.cc: Add dg-warning.
3379         * testsuite/21_strings/basic_string/cons/char/69092.cc: Remove
3380         std::iterator base class.
3381         * testsuite/24_iterators/back_insert_iterator/requirements/base_classes.cc:
3382         Likewise.
3383         * testsuite/24_iterators/front_insert_iterator/requirements/base_classes.cc:
3384         Likewise.
3385         * testsuite/24_iterators/insert_iterator/requirements/base_classes.cc:
3386         Likewise.
3387         * testsuite/24_iterators/istream_iterator/requirements/base_classes.cc:
3388         Likewise.
3389         * testsuite/24_iterators/istreambuf_iterator/92285.cc:
3390         Likewise.
3391         * testsuite/24_iterators/istreambuf_iterator/requirements/base_classes.cc:
3392         Likewise.
3393         * testsuite/24_iterators/ostream_iterator/requirements/base_classes.cc:
3394         Likewise.
3395         * testsuite/24_iterators/ostreambuf_iterator/requirements/base_classes.cc:
3396         Likewise.
3397         * testsuite/24_iterators/reverse_iterator/requirements/base_classes.cc:
3398         Likewise.
3399         * testsuite/25_algorithms/copy/34595.cc:
3400         Likewise.
3401         * testsuite/25_algorithms/minmax/3.cc: Remove std::binary_function
3402         base class.
3403         * testsuite/25_algorithms/all_of/requirements/explicit_instantiation/2.cc:
3404         Disable deprecated warnings.
3405         * testsuite/25_algorithms/all_of/requirements/explicit_instantiation/pod.cc:
3406         Likewise.
3407         * testsuite/25_algorithms/any_of/requirements/explicit_instantiation/2.cc:
3408         Likewise.
3409         * testsuite/25_algorithms/any_of/requirements/explicit_instantiation/pod.cc:
3410         Likewise.
3411         * testsuite/25_algorithms/copy_if/requirements/explicit_instantiation/2.cc:
3412         Likewise.
3413         * testsuite/25_algorithms/copy_if/requirements/explicit_instantiation/pod.cc:
3414         Likewise.
3415         * testsuite/25_algorithms/count_if/requirements/explicit_instantiation/2.cc:
3416         Likewise.
3417         * testsuite/25_algorithms/count_if/requirements/explicit_instantiation/pod.cc:
3418         Likewise.
3419         * testsuite/25_algorithms/find_end/requirements/explicit_instantiation/2.cc:
3420         Likewise.
3421         * testsuite/25_algorithms/find_end/requirements/explicit_instantiation/pod.cc:
3422         Likewise.
3423         * testsuite/25_algorithms/find_first_of/requirements/explicit_instantiation/2.cc:
3424         Likewise.
3425         * testsuite/25_algorithms/find_first_of/requirements/explicit_instantiation/pod.cc:
3426         Likewise.
3427         * testsuite/25_algorithms/find_if/requirements/explicit_instantiation/2.cc:
3428         Likewise.
3429         * testsuite/25_algorithms/find_if/requirements/explicit_instantiation/pod.cc:
3430         Likewise.
3431         * testsuite/25_algorithms/find_if_not/requirements/explicit_instantiation/2.cc:
3432         Likewise.
3433         * testsuite/25_algorithms/find_if_not/requirements/explicit_instantiation/pod.cc:
3434         Likewise.
3435         * testsuite/25_algorithms/for_each/requirements/explicit_instantiation/2.cc:
3436         Likewise.
3437         * testsuite/25_algorithms/for_each/requirements/explicit_instantiation/pod.cc:
3438         Likewise.
3439         * testsuite/25_algorithms/is_partitioned/requirements/explicit_instantiation/2.cc:
3440         Likewise.
3441         * testsuite/25_algorithms/is_partitioned/requirements/explicit_instantiation/pod.cc:
3442         Likewise.
3443         * testsuite/25_algorithms/is_permutation/requirements/explicit_instantiation/2.cc:
3444         Likewise.
3445         * testsuite/25_algorithms/is_permutation/requirements/explicit_instantiation/pod.cc:
3446         Likewise.
3447         * testsuite/25_algorithms/none_of/requirements/explicit_instantiation/2.cc:
3448         Likewise.
3449         * testsuite/25_algorithms/none_of/requirements/explicit_instantiation/pod.cc:
3450         Likewise.
3451         * testsuite/25_algorithms/partition/requirements/explicit_instantiation/2.cc:
3452         Likewise.
3453         * testsuite/25_algorithms/partition/requirements/explicit_instantiation/pod.cc:
3454         Likewise.
3455         * testsuite/25_algorithms/partition_copy/requirements/explicit_instantiation/2.cc:
3456         Likewise.
3457         * testsuite/25_algorithms/partition_copy/requirements/explicit_instantiation/pod.cc:
3458         Likewise.
3459         * testsuite/25_algorithms/partition_point/requirements/explicit_instantiation/2.cc:
3460         Likewise.
3461         * testsuite/25_algorithms/partition_point/requirements/explicit_instantiation/pod.cc:
3462         Likewise.
3463         * testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/2.cc:
3464         Likewise.
3465         * testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/pod.cc:
3466         Likewise.
3467         * testsuite/25_algorithms/remove_copy_if/requirements/explicit_instantiation/2.cc:
3468         Likewise.
3469         * testsuite/25_algorithms/remove_copy_if/requirements/explicit_instantiation/pod.cc:
3470         Likewise.
3471         * testsuite/25_algorithms/remove_if/requirements/explicit_instantiation/2.cc:
3472         Likewise.
3473         * testsuite/25_algorithms/remove_if/requirements/explicit_instantiation/pod.cc:
3474         Likewise.
3475         * testsuite/25_algorithms/replace_copy_if/requirements/explicit_instantiation/2.cc:
3476         Likewise.
3477         * testsuite/25_algorithms/replace_copy_if/requirements/explicit_instantiation/pod.cc:
3478         Likewise.
3479         * testsuite/25_algorithms/replace_if/requirements/explicit_instantiation/2.cc:
3480         Likewise.
3481         * testsuite/25_algorithms/replace_if/requirements/explicit_instantiation/pod.cc:
3482         Likewise.
3483         * testsuite/25_algorithms/search/requirements/explicit_instantiation/2.cc:
3484         Likewise.
3485         * testsuite/25_algorithms/search/requirements/explicit_instantiation/pod.cc:
3486         Likewise.
3487         * testsuite/25_algorithms/search_n/requirements/explicit_instantiation/2.cc:
3488         Likewise.
3489         * testsuite/25_algorithms/search_n/requirements/explicit_instantiation/pod.cc:
3490         Likewise.
3491         * testsuite/25_algorithms/stable_partition/requirements/explicit_instantiation/2.cc:
3492         Likewise.
3493         * testsuite/25_algorithms/stable_partition/requirements/explicit_instantiation/pod.cc:
3494         Likewise.
3495         * testsuite/25_algorithms/transform/requirements/explicit_instantiation/2.cc:
3496         Likewise.
3497         * testsuite/25_algorithms/transform/requirements/explicit_instantiation/pod.cc:
3498         Likewise.
3499         * testsuite/27_io/basic_filebuf/underflow/wchar_t/9178.cc: Add
3500         dg-warning.
3501         * testsuite/ext/pb_ds/example/priority_queue_erase_if.cc:
3502         Likewise.
3503         * testsuite/ext/pb_ds/example/priority_queue_split_join.cc:
3504         Likewise.
3505         * testsuite/tr1/3_function_objects/reference_wrapper/typedefs.cc:
3506         Disable deprecated warnings.
3507         * testsuite/tr1/6_containers/hash/requirements/base_classes.cc:
3508         Likewise.
3509         * testsuite/util/regression/trait/erase_if_fn.hpp: Remove
3510         std::unary_function base classes.
3511         * testsuite/util/testsuite_iterators.h (output_iterator_wrapper):
3512         Remove std::iterator base classes.
3513
3514 2022-01-14  Jonathan Wakely  <jwakely@redhat.com>
3515
3516         * include/bits/shared_ptr.h (__cpp_lib_shared_ptr_weak_type):
3517         Correct type of macro value.
3518         (shared_ptr): Add additional friend declarations.
3519         (make_shared, allocate_shared): Constrain existing overloads and
3520         remove static_assert.
3521         * include/bits/shared_ptr_base.h (__cpp_lib_smart_ptr_for_overwrite):
3522         New macro.
3523         (_Sp_counted_ptr_inplace<T, Alloc, Lp>): New partial
3524         specialization for use with make_shared_for_overwrite.
3525         (__cpp_lib_shared_ptr_arrays): Update value for C++20.
3526         (_Sp_counted_array_base): New class template.
3527         (_Sp_counted_array): New class template.
3528         (__shared_count(_Tp*&, const _Sp_counted_array_base&, _Init)):
3529         New constructor for allocating shared arrays.
3530         (__shared_ptr(const _Sp_counted_array_base&, _Init)): Likewise.
3531         * include/std/version (__cpp_lib_shared_ptr_weak_type): Correct
3532         type.
3533         (__cpp_lib_shared_ptr_arrays): Update value for C++20.
3534         (__cpp_lib_smart_ptr_for_overwrite): New macro.
3535         * testsuite/20_util/shared_ptr/creation/99006.cc: Adjust
3536         expected errors.
3537         * testsuite/20_util/shared_ptr/creation/array.cc: New test.
3538         * testsuite/20_util/shared_ptr/creation/overwrite.cc: New test.
3539         * testsuite/20_util/shared_ptr/creation/version.cc: New test.
3540         * testsuite/20_util/unique_ptr/creation/for_overwrite.cc: Check
3541         feature test macro. Test non-trivial default-initialization.
3542
3543 2022-01-14  Jonathan Wakely  <jwakely@redhat.com>
3544
3545         * include/bits/stl_construct.h (_Construct, _Construct_novalue):
3546         Also cast away cv-qualifiers when converting pointer to void.
3547         * testsuite/20_util/allocator/void.cc: Test construct function
3548         with cv-qualified types.
3549
3550 2022-01-14  Jonathan Wakely  <jwakely@redhat.com>
3551
3552         PR libstdc++/103992
3553         * include/bits/stl_iterator.h (common_iterator): Use
3554         std::construct_at instead of placement new.
3555         * testsuite/24_iterators/common_iterator/1.cc: Check copy
3556         construction is usable in constant expressions.
3557
3558 2022-01-14  Jonathan Wakely  <jwakely@redhat.com>
3559
3560         * doc/xml/manual/status_cxx2011.xml: Document new tokens
3561         accepted by std::random_device constructor.
3562         * doc/html/manual/status.html: Regenerate.
3563
3564 2022-01-12  Patrick Palka  <ppalka@redhat.com>
3565
3566         * testsuite/20_util/to_chars/103955.cc: Add explicit dg-do
3567         directive.
3568
3569 2022-01-12  Patrick Palka  <ppalka@redhat.com>
3570
3571         PR libstdc++/103955
3572         * src/c++17/floating_to_chars.cc (__floating_to_chars_hex):
3573         Track the excess precision separately from the effective
3574         precision.  Avoid overflow in bounds check by splitting it into
3575         two checks.
3576         (__floating_to_chars_precision): Avoid overflow in bounds checks
3577         similarly.
3578         * testsuite/20_util/to_chars/103955.cc: New test.
3579
3580 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
3581
3582         PR libstdc++/103726
3583         * include/Makefile.am: Install <source_location> for
3584         freestanding.
3585         * include/Makefile.in: Regenerate.
3586         * include/std/version (__cpp_lib_source_location): Define for
3587         freestanding.
3588
3589 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
3590
3591         * include/std/ranges (ranges::lazy_split_view::_InnerIter::end()):
3592         Add neoxcept (LWG 3593).
3593
3594 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
3595
3596         * include/std/ranges (ranges::__detail::__box): Add constexpr to
3597         assignment operators (LWG 3572).
3598         * testsuite/std/ranges/adaptors/filter.cc: Check assignment of a
3599         view that uses copyable-box.
3600
3601 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
3602
3603         PR libstdc++/103726
3604         * include/Makefile.am: Install <coroutine> for freestanding.
3605         * include/Makefile.in: Regenerate.
3606         * include/std/coroutine: Adjust headers and preprocessor
3607         conditions.
3608         (__coroutine_traits_impl): Use concepts when available.
3609         [_GLIBCXX_HOSTED] (hash<coroutine_handle>): Define.
3610
3611 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
3612
3613         * include/std/ostream (operator<<(basic_ostream&, charT)):
3614         Use unformatted input if no padding is needed.
3615         (operator<<(basic_ostream<char>&, char)): Likewise.
3616
3617 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
3618
3619         PR libstdc++/103891
3620         * include/bits/c++config (_GLIBCXX_HAVE_COND_TRIVIAL_SPECIAL_MEMBERS):
3621         Define.
3622         * include/std/variant (__cpp_lib_variant): Only define C++20
3623         value when the compiler is known to support conditionally
3624         trivial destructors.
3625         * include/std/version (__cpp_lib_variant): Likewise.
3626
3627 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
3628
3629         * include/bits/stl_iterator.h (common_iterator): Add constexpr
3630         to all member functions (LWG 3574).
3631         * testsuite/24_iterators/common_iterator/1.cc: Evaluate some
3632         tests as constant expressions.
3633         * testsuite/24_iterators/common_iterator/2.cc: Likewise.
3634
3635 2022-01-10  Jakub Jelinek  <jakub@redhat.com>
3636
3637         PR libstdc++/77760
3638         * include/bits/locale_facets_nonio.h (__time_get_state): New struct.
3639         (time_get::_M_extract_via_format): Declare new method with
3640         __time_get_state& as an extra argument.
3641         * include/bits/locale_facets_nonio.tcc (_M_extract_via_format): Add
3642         __state argument, set various fields in it while parsing.  Handle %j,
3643         %U, %w and %W, fix up handling of %y, %Y and %C, don't adjust tm_hour
3644         for %p immediately.  Add a wrapper around the method without the
3645         __state argument for backwards compatibility.
3646         (_M_extract_num): Remove all __len == 4 special cases.
3647         (time_get::do_get_time, time_get::do_get_date, time_get::do_get): Zero
3648         initialize __state, pass it to _M_extract_via_format and finalize it
3649         at the end.
3650         (do_get_year): For 1-2 digit parsed years, map 0-68 to 2000-2068,
3651         69-99 to 1969-1999.  For 3-4 digit parsed years use that as year.
3652         (get): If do_get isn't overloaded from the locale_facets_nonio.tcc
3653         version, don't call do_get but call _M_extract_via_format instead to
3654         pass around state.
3655         * config/abi/pre/gnu.ver (GLIBCXX_3.4.30): Export _M_extract_via_format
3656         with extra __time_get_state and __time_get_state::_M_finalize_state.
3657         * src/c++98/locale_facets.cc (is_leap, day_of_the_week,
3658         day_of_the_year): New functions in anon namespace.
3659         (mon_yday): New var in anon namespace.
3660         (__time_get_state::_M_finalize_state): Define.
3661         * testsuite/22_locale/time_get/get/char/4.cc: New test.
3662         * testsuite/22_locale/time_get/get/wchar_t/4.cc: New test.
3663         * testsuite/22_locale/time_get/get_year/char/1.cc (test01): Parse 197
3664         as year 197AD instead of error.
3665         * testsuite/22_locale/time_get/get_year/char/5.cc (test01): Parse 1 as
3666         year 2001 instead of error.
3667         * testsuite/22_locale/time_get/get_year/char/6.cc: New test.
3668         * testsuite/22_locale/time_get/get_year/wchar_t/1.cc (test01): Parse
3669         197 as year 197AD instead of error.
3670         * testsuite/22_locale/time_get/get_year/wchar_t/5.cc (test01): Parse
3671         1 as year 2001 instead of error.
3672         * testsuite/22_locale/time_get/get_year/wchar_t/6.cc: New test.
3673
3674 2022-01-10  Jonathan Wakely  <jwakely@redhat.com>
3675
3676         PR libstdc++/103866
3677         * acinclude.m4 (GLIBCXX_COMPUTE_STDIO_INTEGER_CONSTANTS): Do
3678         nothing for freestanding builds.
3679         (GLIBCXX_ENABLE_HOSTED): Define FREESTANDING_FLAGS.
3680         * configure.ac: Do not use AC_LIBTOOL_DLOPEN when configured
3681         with --without-headers.  Do not use GCC_HEADER_STDINT for
3682         freestanding builds.
3683         * libsupc++/Makefile.am (HOSTED_CXXFLAGS): Use -ffreestanding
3684         for freestanding builds.
3685         * configure: Regenerate.
3686         * Makefile.in: Regenerate.
3687         * doc/Makefile.in: Regenerate.
3688         * include/Makefile.in: Regenerate.
3689         * libsupc++/Makefile.in: Regenerate.
3690         * po/Makefile.in: Regenerate.
3691         * python/Makefile.in: Regenerate.
3692         * src/Makefile.in: Regenerate.
3693         * src/c++11/Makefile.in: Regenerate.
3694         * src/c++17/Makefile.in: Regenerate.
3695         * src/c++20/Makefile.in: Regenerate.
3696         * src/c++98/Makefile.in: Regenerate.
3697         * src/filesystem/Makefile.in: Regenerate.
3698         * testsuite/Makefile.in: Regenerate.
3699
3700 2022-01-10  Jonathan Wakely  <jwakely@redhat.com>
3701
3702         * testsuite/28_regex/algorithms/regex_replace/char/103664.cc:
3703         Add dg-timeout-factor directive.
3704         * testsuite/28_regex/basic_regex/84110.cc: Likewise.
3705         * testsuite/28_regex/basic_regex/ctors/char/other.cc: Likewise.
3706         * testsuite/28_regex/match_results/102667.cc: Likewise.
3707
3708 2022-01-10  Jonathan Wakely  <jwakely@redhat.com>
3709
3710         * doc/xml/manual/using.xml: Update documentation around default
3711         -std option.
3712         * doc/html/*: Regenerate.
3713
3714 2022-01-10  Jonathan Wakely  <jwakely@redhat.com>
3715
3716         PR libstdc++/100017
3717         * src/c++17/Makefile.am (AM_CXXFLAGS): Add -nostdinc++.
3718         * src/c++17/Makefile.in: Regenerate.
3719
3720 2022-01-09  Sandra Loosemore  <sandra@codesourcery.com>
3721
3722         * testsuite/18_support/type_info/constexpr.cc: Add explicit
3723         -fdelete-null-pointer-checks option.
3724
3725 2022-01-06  Pavel I. Kryukov  <pavel.kryukov@phystech.edu>
3726             Jonathan Wakely  <jwakely@redhat.com>
3727
3728         PR libstdc++/103853
3729         * include/bits/forward_list.tcc (forward_list::merge): Check for
3730         self-merge.
3731         * testsuite/23_containers/forward_list/operations/merge.cc: New test.
3732
3733 2022-01-06  Jonathan Wakely  <jwakely@redhat.com>
3734
3735         * include/bits/regex.h (basic_regex, match_results): Qualify
3736         name in friend declaration, to work around Clang bug.
3737
3738 2022-01-06  Jonathan Wakely  <jwakely@redhat.com>
3739
3740         * testsuite/ext/rope/pthread7-rope.cc: Add dg-timeout-factor.
3741
3742 2022-01-06  Jonathan Wakely  <jwakely@redhat.com>
3743
3744         PR libstdc++/103911
3745         * include/std/charconv (__from_chars_alpha_to_num): Return
3746         char instead of unsigned char. Change invalid return value to
3747         127 instead of using numeric trait.
3748         (__from_chars_alnum): Fix comment. Do not use std::isdigit.
3749         Change type of variable to char.
3750
3751 2022-01-05  François Dumont  <fdumont@gcc.gnu.org>
3752
3753         PR libstdc++/68303
3754         * include/bits/hashtable_policy.h
3755         (_Hashtable_hash_traits<_Hash>): New.
3756         (_Hash_code_base<>::_M_hash_code(const _Hash_node_value<>&)): New.
3757         (_Hashtable_base<>::_M_key_equals): New.
3758         (_Hashtable_base<>::_M_equals): Use latter.
3759         (_Hashtable_base<>::_M_key_equals_tr): New.
3760         (_Hashtable_base<>::_M_equals_tr): Use latter.
3761         * include/bits/hashtable.h
3762         (_Hashtable<>::__small_size_threshold()): New, use _Hashtable_hash_traits.
3763         (_Hashtable<>::find): Loop through elements to look for key if size is lower
3764         than __small_size_threshold().
3765         (_Hashtable<>::_M_emplace(true_type, _Args&&...)): Likewise.
3766         (_Hashtable<>::_M_insert_unique(_Kt&&, _Args&&, const _NodeGenerator&)): Likewise.
3767         (_Hashtable<>::_M_compute_hash_code(const_iterator, const key_type&)): New.
3768         (_Hashtable<>::_M_emplace(const_iterator, false_type, _Args&&...)): Use latter.
3769         (_Hashtable<>::_M_find_before_node(const key_type&)): New.
3770         (_Hashtable<>::_M_erase(true_type, const key_type&)): Use latter.
3771         (_Hashtable<>::_M_erase(false_type, const key_type&)): Likewise.
3772         * src/c++11/hashtable_c++0x.cc: Include <bits/functional_hash.h>.
3773         * testsuite/util/testsuite_performance.h
3774         (report_performance): Use 9 width to display memory.
3775         * testsuite/performance/23_containers/insert_erase/unordered_small_size.cc:
3776         New performance test case.
3777
3778 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
3779
3780         PR libstdc++/103919
3781         * include/bits/basic_string.h (basic_string(const T&, size_t, size_t)):
3782         Relax constraints on string_view parameter.
3783         * include/bits/cow_string.h (basic_string(const T&, size_t, size_t)):
3784         Likewise.
3785         * testsuite/21_strings/basic_string/cons/char/103919.cc: New test.
3786
3787 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
3788
3789         * config/abi/pre/gnu.ver (GLIBCXX_3.4.30): Export new symbol for
3790         ARM EABI.
3791         * include/bits/c++config (_GLIBCXX23_CONSTEXPR): Define.
3792         * include/std/version (__cpp_lib_constexpr_typeinfo): Define.
3793         * libsupc++/tinfo.cc: Add #error to ensure non-inline definition
3794         is emitted.
3795         (type_info::__equal): Define alias symbol.
3796         * libsupc++/typeinfo (type_info::before): Combine different
3797         implementations into one.
3798         (type_info::operator==): Likewise. Use address equality for
3799         constant evaluation. Call __equal for targets that require the
3800         definition to be non-inline.
3801         * testsuite/18_support/type_info/constexpr.cc: New test.
3802
3803 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
3804
3805         * src/c++11/cxx11-ios_failure.cc (io_error_category): Define
3806         class and virtual functions as 'final'.
3807         (io_category_instance): Use constinit union to make the object
3808         immortal.
3809         * src/c++11/future.cc (future_error_category): Define class and
3810         virtual functions as 'final'.
3811         (future_category_instance): Use constinit union.
3812
3813 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
3814
3815         * python/libstdcxx/v6/printers.py (StdErrorCodePrinter): Strip
3816         versioned namespace from the type name that is printed.
3817
3818 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
3819
3820         * python/libstdcxx/v6/printers.py (StdRegexStatePrinter): New
3821         printer for std::regex NFA states.
3822
3823 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
3824
3825         * testsuite/23_containers/forward_list/operations/1.cc: Fill in
3826         placeholders in comments.
3827         * testsuite/23_containers/forward_list/operations/2.cc:
3828         Likewise.
3829         * testsuite/23_containers/forward_list/operations/3.cc:
3830         Likewise.
3831         * testsuite/23_containers/forward_list/operations/4.cc:
3832         Likewise.
3833         * testsuite/23_containers/forward_list/operations/5.cc:
3834         Likewise.
3835         * testsuite/23_containers/forward_list/operations/6.cc:
3836         Likewise.
3837         * testsuite/23_containers/forward_list/operations/7.cc:
3838         Likewise.
3839
3840 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
3841
3842         PR libstdc++/103848
3843         * include/bits/stl_deque.h (operator-): Do not use 0 as null
3844         pointer constant.
3845
3846 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
3847
3848         * include/bits/alloc_traits.h (allocator_traits<allocator<void>>):
3849         Use std::_Construct for construct.
3850
3851 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
3852
3853         PR libstdc++/103877
3854         * doc/xml/faq.xml: Add '-x c++' to preprocessor command.
3855         * doc/html/faq.html: Regenerate.
3856
3857 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
3858
3859         * include/bits/regex.h (__regex_algo_impl): Change __policy and
3860         __match_mode template parameters to be function parameters.
3861         (regex_match, regex_search): Pass policy and match mode as
3862         function arguments.
3863         * include/bits/regex.tcc (__regex_algo_impl): Change template
3864         parameters to function parameters.
3865         * include/bits/regex_compiler.h (_RegexTranslatorBase): Use
3866         'if constexpr' for conditions using template parameters.
3867         (_RegexTranslator): Likewise.
3868         * include/bits/regex_executor.tcc (_Executor::_M_handle_accept):
3869         Likewise.
3870         * testsuite/util/testsuite_regex.h (regex_match_debug)
3871         (regex_search_debug): Move template arguments to function
3872         arguments.
3873
3874 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
3875
3876         * testsuite/util/testsuite_regex.h (regex_match_debug): Compare
3877         results even if the match failed.
3878
3879 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
3880
3881         * include/bits/regex_compiler.tcc: Adjust all calls to
3882         __throw_regex_error.
3883         * include/bits/regex_error.h (__throw_regex_error): Add noreturn
3884         attribute.
3885         * include/bits/regex_scanner.tcc: Likewise.
3886         * src/c++11/regex.cc (desc): New helper function.
3887         (regex_error::regex_error(error_type)): Use desc to get a string
3888         corresponding to the error code.
3889
3890 \f
3891 Copyright (C) 2022 Free Software Foundation, Inc.
3892
3893 Copying and distribution of this file, with or without modification,
3894 are permitted in any medium without royalty provided the copyright
3895 notice and this notice are preserved.