libstdc++-v3/ChangeLog

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