libstdc++-v3/ChangeLog

   1 2021-11-13  Jonathan Wakely  <jwakely@redhat.com>
   2
   3         * include/Makefile.am: Add spanstream header.
   4         * include/Makefile.in: Regenerate.
   5         * include/precompiled/stdc++.h: Add spanstream header.
   6         * include/std/version (__cpp_lib_spanstream): Define.
   7         * include/std/spanstream: New file.
   8         * testsuite/27_io/spanstream/1.cc: New test.
   9         * testsuite/27_io/spanstream/version.cc: New test.
  10
  11 2021-11-13  Hans-Peter Nilsson  <hp@axis.com>
  12
  13         PR libstdc++/103166
  14         * acinclude.m4 (GLIBCXX_CHECK_GETENTROPY, GLIBCXX_CHECK_ARC4RANDOM):
  15         Use GCC_TRY_COMPILE_OR_LINK instead of AC_TRY_COMPILE.
  16         * configure: Regenerate.
  17
  18 2021-11-12  Jonathan Wakely  <jwakely@redhat.com>
  19
  20         PR libstdc++/59675
  21         * acinclude.m4 (libtool_VERSION): Bump version.
  22         * config/abi/pre/gnu.ver (GLIBCXX_3.4.30): Add version and
  23         export new symbol.
  24         * configure: Regenerate.
  25         * include/bits/c++config (__replacement_assert): Remove, declare
  26         __glibcxx_assert_fail instead.
  27         * src/c++11/debug.cc (__glibcxx_assert_fail): New function to
  28         replace __replacement_assert, writing to stderr instead of
  29         stdout.
  30         * testsuite/util/testsuite_abi.cc: Update latest version.
  31
  32 2021-11-12  Jonathan Wakely  <jwakely@redhat.com>
  33             Josh Marshall  <joshua.r.marshall.1991@gmail.com>
  34
  35         * include/bits/alloc_traits.h (_Destroy): Make constexpr for
  36         C++20 mode.
  37         * include/bits/allocator.h (__shrink_to_fit::_S_do_it):
  38         Likewise.
  39         * include/bits/stl_algobase.h (__fill_a1): Declare _Bit_iterator
  40         overload constexpr for C++20.
  41         * include/bits/stl_bvector.h (_Bit_type, _S_word_bit): Move out
  42         of inline namespace.
  43         (_Bit_reference, _Bit_iterator_base, _Bit_iterator)
  44         (_Bit_const_iterator, _Bvector_impl_data, _Bvector_base)
  45         (vector<bool, A>>): Add constexpr to every member function.
  46         (_Bvector_base::_M_allocate): Initialize storage during constant
  47         evaluation.
  48         (vector<bool, A>::_M_initialize_value): Use __fill_bvector_n
  49         instead of memset.
  50         (__fill_bvector_n): New helper function to replace memset during
  51         constant evaluation.
  52         * include/bits/stl_uninitialized.h (__uninitialized_copy<false>):
  53         Move logic to ...
  54         (__do_uninit_copy): New function.
  55         (__uninitialized_fill<false>): Move logic to ...
  56         (__do_uninit_fill): New function.
  57         (__uninitialized_fill_n<false>): Move logic to ...
  58         (__do_uninit_fill_n): New function.
  59         (__uninitialized_copy_a): Add constexpr. Use __do_uninit_copy.
  60         (__uninitialized_move_a, __uninitialized_move_if_noexcept_a):
  61         Add constexpr.
  62         (__uninitialized_fill_a): Add constexpr. Use __do_uninit_fill.
  63         (__uninitialized_fill_n_a): Add constexpr. Use
  64         __do_uninit_fill_n.
  65         (__uninitialized_default_n, __uninitialized_default_n_a)
  66         (__relocate_a_1, __relocate_a): Add constexpr.
  67         * include/bits/stl_vector.h (_Vector_impl_data, _Vector_impl)
  68         (_Vector_base, vector): Add constexpr to every member function.
  69         (_Vector_impl::_S_adjust): Disable ASan annotation during
  70         constant evaluation.
  71         (_Vector_base::_S_use_relocate): Disable bitwise-relocation
  72         during constant evaluation.
  73         (vector::_Temporary_value): Use a union for storage.
  74         * include/bits/vector.tcc (vector, vector<bool>): Add constexpr
  75         to every member function.
  76         * include/std/vector (erase_if, erase): Add constexpr.
  77         * testsuite/23_containers/headers/vector/synopsis.cc: Add
  78         constexpr for C++20 mode.
  79         * testsuite/23_containers/vector/bool/cmp_c++20.cc: Change to
  80         compile-only test using constant expressions.
  81         * testsuite/23_containers/vector/bool/capacity/29134.cc: Adjust
  82         namespace for _S_word_bit.
  83         * testsuite/23_containers/vector/bool/modifiers/insert/31370.cc:
  84         Likewise.
  85         * testsuite/23_containers/vector/cmp_c++20.cc: Likewise.
  86         * testsuite/23_containers/vector/cons/89164.cc: Adjust errors
  87         for C++20 and move C++17 test to ...
  88         * testsuite/23_containers/vector/cons/89164_c++17.cc: ... here.
  89         * testsuite/23_containers/vector/bool/capacity/constexpr.cc: New test.
  90         * testsuite/23_containers/vector/bool/cons/constexpr.cc: New test.
  91         * testsuite/23_containers/vector/bool/element_access/constexpr.cc: New test.
  92         * testsuite/23_containers/vector/bool/modifiers/assign/constexpr.cc: New test.
  93         * testsuite/23_containers/vector/bool/modifiers/constexpr.cc: New test.
  94         * testsuite/23_containers/vector/bool/modifiers/swap/constexpr.cc: New test.
  95         * testsuite/23_containers/vector/capacity/constexpr.cc: New test.
  96         * testsuite/23_containers/vector/cons/constexpr.cc: New test.
  97         * testsuite/23_containers/vector/data_access/constexpr.cc: New test.
  98         * testsuite/23_containers/vector/element_access/constexpr.cc: New test.
  99         * testsuite/23_containers/vector/modifiers/assign/constexpr.cc: New test.
 100         * testsuite/23_containers/vector/modifiers/constexpr.cc: New test.
 101         * testsuite/23_containers/vector/modifiers/swap/constexpr.cc: New test.
 102
 103 2021-11-11  Jonathan Wakely  <jwakely@redhat.com>
 104
 105         * include/debug/deque (deque::operator=(const deque&)): Remove
 106         definition.
 107         * include/debug/list (list::operator=(const list&)): Likewise.
 108         * include/debug/map.h (map::operator=(const map&)): Likewise.
 109         * include/debug/multimap.h (multimap::operator=(const multimap&)):
 110         Likewise.
 111         * include/debug/multiset.h (multiset::operator=(const multiset&)):
 112         Likewise.
 113         * include/debug/set.h (set::operator=(const set&)): Likewise.
 114         * include/debug/string (basic_string::operator=(const basic_string&)):
 115         Likewise.
 116         * include/debug/vector (vector::operator=(const vector&)):
 117         Likewise.
 118         (_Safe_vector::operator=(const _Safe_vector&)): Define for
 119         C++98 as well.
 120
 121 2021-11-11  Jonathan Wakely  <jwakely@redhat.com>
 122
 123         * include/std/memory_resource (memory_resource::allocate):
 124         Implicitly create objects in the returned storage.
 125
 126 2021-11-11  Jonathan Wakely  <jwakely@redhat.com>
 127
 128         * include/bits/stl_bvector.h (vector<bool>::data()): Give
 129         protected access, and delete for C++11 and later.
 130
 131 2021-11-10  Jonathan Wakely  <jwakely@redhat.com>
 132
 133         PR libstdc++/100117
 134         * testsuite/17_intro/headers/c++1998/49745.cc: Explicitly list
 135         all C++ headers instead of including <bits/stdc++.h>
 136
 137 2021-11-10  Jonathan Wakely  <jwakely@redhat.com>
 138
 139         PR libstdc++/100748
 140         PR libstdc++/103133
 141         * config/os/gnu-linux/os_defines.h (_GLIBCXX_GTHREAD_USE_WEAK):
 142         Define for glibc 2.34 and later.
 143
 144 2021-11-09  François Dumont  <fdumont@gcc.gnu.org>
 145
 146         * include/bits/hashtable_policy.h (__distance_fw): Replace class keyword with
 147         typename.
 148         * include/bits/hashtable.h (_Hashtable<>::_M_merge_unique): Remove noexcept
 149         qualification. Use const_iterator for node extraction/reinsert.
 150         (_Hashtable<>::_M_merge_multi): Likewise. Compute new hash code before extract.
 151         * include/debug/safe_container.h (_Safe_container<>): Make all methods
 152         protected.
 153         * include/debug/safe_unordered_container.h
 154         (_Safe_unordered_container<>::_UContInvalidatePred<_ExtractKey, _Source>): New.
 155         (_Safe_unordered_container<>::_UMContInvalidatePred<_ExtractKey, _Source>): New.
 156         (_Safe_unordered_container<>::_UContMergeGuard<_Source, _InvalidatePred>): New.
 157         (_Safe_unordered_container<>::_S_uc_guard<_ExtractKey, _Source>): New.
 158         (_Safe_unordered_container<>::_S_umc_guard<_ExtractKey, _Source>): New.
 159         (_Safe_unordered_container<>::_M_invalide_all): Make public.
 160         (_Safe_unordered_container<>::_M_invalide_if): Likewise.
 161         (_Safe_unordered_container<>::_M_invalide_local_if): Likewise.
 162         * include/debug/unordered_map
 163         (unordered_map<>::mapped_type, pointer, const_pointer): New typedef.
 164         (unordered_map<>::reference, const_reference, difference_type): New typedef.
 165         (unordered_map<>::get_allocator, empty, size, max_size): Add usings.
 166         (unordered_map<>::bucket_count, max_bucket_count, bucket): Add usings.
 167         (unordered_map<>::hash_function, key_equal, count, contains): Add usings.
 168         (unordered_map<>::operator[], at, rehash, reserve): Add usings.
 169         (unordered_map<>::merge): New.
 170         (unordered_multimap<>::mapped_type, pointer, const_pointer): New typedef.
 171         (unordered_multimap<>::reference, const_reference, difference_type): New typedef.
 172         (unordered_multimap<>::get_allocator, empty, size, max_size): Add usings.
 173         (unordered_multimap<>::bucket_count, max_bucket_count, bucket): Add usings.
 174         (unordered_multimap<>::hash_function, key_equal, count, contains): Add usings.
 175         (unordered_multimap<>::rehash, reserve): Add usings.
 176         (unordered_multimap<>::merge): New.
 177         * include/debug/unordered_set
 178         (unordered_set<>::mapped_type, pointer, const_pointer): New typedef.
 179         (unordered_set<>::reference, const_reference, difference_type): New typedef.
 180         (unordered_set<>::get_allocator, empty, size, max_size): Add usings.
 181         (unordered_set<>::bucket_count, max_bucket_count, bucket): Add usings.
 182         (unordered_set<>::hash_function, key_equal, count, contains): Add usings.
 183         (unordered_set<>::rehash, reserve): Add usings.
 184         (unordered_set<>::merge): New.
 185         (unordered_multiset<>::mapped_type, pointer, const_pointer): New typedef.
 186         (unordered_multiset<>::reference, const_reference, difference_type): New typedef.
 187         (unordered_multiset<>::get_allocator, empty, size, max_size): Add usings.
 188         (unordered_multiset<>::bucket_count, max_bucket_count, bucket): Add usings.
 189         (unordered_multiset<>::hash_function, key_equal, count, contains): Add usings.
 190         (unordered_multiset<>::rehash, reserve): Add usings.
 191         (unordered_multiset<>::merge): New.
 192         * testsuite/23_containers/unordered_map/debug/merge1_neg.cc: New test.
 193         * testsuite/23_containers/unordered_map/debug/merge2_neg.cc: New test.
 194         * testsuite/23_containers/unordered_map/debug/merge3_neg.cc: New test.
 195         * testsuite/23_containers/unordered_map/debug/merge4_neg.cc: New test.
 196         * testsuite/23_containers/unordered_multimap/debug/merge1_neg.cc: New test.
 197         * testsuite/23_containers/unordered_multimap/debug/merge2_neg.cc: New test.
 198         * testsuite/23_containers/unordered_multimap/debug/merge3_neg.cc: New test.
 199         * testsuite/23_containers/unordered_multimap/debug/merge4_neg.cc: New test.
 200         * testsuite/23_containers/unordered_multiset/debug/merge1_neg.cc: New test.
 201         * testsuite/23_containers/unordered_multiset/debug/merge2_neg.cc: New test.
 202         * testsuite/23_containers/unordered_multiset/debug/merge3_neg.cc: New test.
 203         * testsuite/23_containers/unordered_multiset/debug/merge4_neg.cc: New test.
 204         * testsuite/23_containers/unordered_set/debug/merge1_neg.cc: New test.
 205         * testsuite/23_containers/unordered_set/debug/merge2_neg.cc: New test.
 206         * testsuite/23_containers/unordered_set/debug/merge3_neg.cc: New test.
 207         * testsuite/23_containers/unordered_set/debug/merge4_neg.cc: New test.
 208         * testsuite/util/testsuite_abi.h: [_GLIBCXX_DEBUG] Use normal unordered
 209         container implementation.
 210
 211 2021-11-09  Jonathan Wakely  <jwakely@redhat.com>
 212
 213         * testsuite/26_numerics/random/random_device/cons/token.cc:
 214         Print results of random_device_available checks.
 215
 216 2021-11-09  Jonathan Wakely  <jwakely@redhat.com>
 217
 218         PR libstdc++/103146
 219         * src/c++11/random.cc: Check __powerpc64__ not __powerpc__.
 220
 221 2021-11-09  Jonathan Wakely  <jwakely@redhat.com>
 222
 223         * acinclude.m4 (GLIBCXX_CHECK_GETENTROPY, GLIBCXX_CHECK_ARC4RANDOM):
 224         Define.
 225         * configure.ac (GLIBCXX_CHECK_GETENTROPY, GLIBCXX_CHECK_ARC4RANDOM):
 226         Use them.
 227         * config.h.in: Regenerate.
 228         * configure: Regenerate.
 229         * src/c++11/random.cc (random_device): Add getentropy and
 230         arc4random as sources.
 231         * testsuite/26_numerics/random/random_device/cons/token.cc:
 232         Check new tokens.
 233         * testsuite/26_numerics/random/random_device/entropy.cc:
 234         Likewise.
 235
 236 2021-11-09  Jonathan Wakely  <jwakely@redhat.com>
 237
 238         * testsuite/26_numerics/random/random_device/cons/token.cc:
 239         Retry if random devices produce the same value.
 240
 241 2021-11-09  Rasmus Villemoes  <rasmus.villemoes@prevas.dk>
 242
 243         * config/os/vxworks/os_defines.h (_GLIBCXX_HAVE_TLS): Only
 244         define for VxWorks >= 6.6.
 245
 246 2021-11-05  Jonathan Wakely  <jwakely@redhat.com>
 247
 248         * include/bits/range_access.h (begin(valarray), end(valarray)):
 249         Add noexcept.
 250
 251 2021-11-05  Jonathan Wakely  <jwakely@redhat.com>
 252
 253         * include/std/tuple (tuple_size_v): Fix pack expansion.
 254
 255 2021-11-05  Jonathan Wakely  <jwakely@redhat.com>
 256
 257         * src/c++11/random.cc (__x86_rdrand, __x86_rdseed): Add
 258         [[unlikely]] attribute.
 259
 260 2021-11-05  Jonathan Wakely  <jwakely@redhat.com>
 261
 262         * src/c++11/random.cc [__powerpc__] (USE_DARN): Define.
 263         (__ppc_darn): New function to use POWER9 DARN instruction.
 264         (Which): Add 'darn' enumerator.
 265         (which_source): Check for __ppc_darn.
 266         (random_device::_M_init): Support "darn" and "hw" tokens.
 267         (random_device::_M_getentropy): Add darn to switch.
 268         * testsuite/26_numerics/random/random_device/cons/token.cc:
 269         Check "darn" token.
 270         * testsuite/26_numerics/random/random_device/entropy.cc:
 271         Likewise.
 272
 273 2021-11-05  Jonathan Wakely  <jwakely@redhat.com>
 274
 275         * testsuite/lib/gdb-test.exp: Add target selector support to the
 276         dg-final directives.
 277         * testsuite/libstdc++-prettyprinters/80276.cc: Add xfail for
 278         C++20.
 279         * testsuite/libstdc++-prettyprinters/libfundts.cc: Likewise.
 280         * testsuite/libstdc++-prettyprinters/prettyprinters.exp: Tweak
 281         comment.
 282
 283 2021-11-04  Jonathan Wakely  <jwakely@redhat.com>
 284
 285         PR libstdc++/103086
 286         * python/libstdcxx/v6/printers.py (_tuple_impl_get): New helper
 287         for accessing the tuple element stored in a _Tuple_impl node.
 288         (tuple_get): New function for accessing a tuple element.
 289         (unique_ptr_get): New function for accessing a unique_ptr.
 290         (UniquePointerPrinter, StdPathPrinter): Use unique_ptr_get.
 291         * python/libstdcxx/v6/xmethods.py (UniquePtrGetWorker): Cast
 292         tuple to its base class before accessing _M_head_impl.
 293
 294 2021-11-04  Jonathan Wakely  <jwakely@redhat.com>
 295
 296         * doc/xml/manual/evolution.xml: Document deprecations.
 297         * doc/html/*: Regenerate.
 298         * libsupc++/exception (unexpected_handler, unexpected)
 299         (get_unexpected, set_unexpected): Add deprecated attribute.
 300         Do not define without _GLIBCXX_USE_DEPRECATED for C++17 and up.
 301         * libsupc++/eh_personality.cc (PERSONALITY_FUNCTION): Disable
 302         deprecated warnings.
 303         * libsupc++/eh_ptr.cc (std::rethrow_exception): Likewise.
 304         * libsupc++/eh_terminate.cc: Likewise.
 305         * libsupc++/eh_throw.cc (__cxa_init_primary_exception):
 306         Likewise.
 307         * libsupc++/unwind-cxx.h (struct __cxa_exception): Use
 308         terminate_handler instead of unexpected_handler.
 309         (struct __cxa_dependent_exception): Likewise.
 310         (__unexpected): Likewise.
 311         * testsuite/18_support/headers/exception/synopsis.cc: Add
 312         dg-warning for deprecated warning.
 313         * testsuite/18_support/exception_ptr/60612-unexpected.cc:
 314         Disable deprecated warnings.
 315         * testsuite/18_support/set_unexpected.cc: Likewise.
 316         * testsuite/18_support/unexpected_handler.cc: Likewise.
 317
 318 2021-11-04  Jonathan Wakely  <jwakely@redhat.com>
 319
 320         * include/bits/utility.h (__find_uniq_type_in_pack): Move
 321         definition to here, ...
 322         * include/std/tuple (__find_uniq_type_in_pack): ... from here.
 323         * include/std/variant (__detail__variant::__index_of): Remove.
 324         (__detail::__variant::__exactly_once): Define using
 325         __find_uniq_type_in_pack instead of __index_of.
 326         (get<T>, get_if<T>, variant::__index_of): Likewise.
 327
 328 2021-11-04  Jonathan Wakely  <jwakely@redhat.com>
 329
 330         * include/bits/stl_pair.h (tuple_size_v): Define partial
 331         specializations for std::pair.
 332         * include/bits/utility.h (_Nth_type): Move definition here
 333         and define primary template.
 334         (tuple_size_v): Move definition here.
 335         * include/std/array (tuple_size_v): Define partial
 336         specializations for std::array.
 337         * include/std/tuple (tuple_size_v): Move primary template to
 338         <bits/utility.h>.  Define partial specializations for
 339         std::tuple.
 340         (tuple_element): Change definition to use _Nth_type.
 341         * include/std/variant (_Nth_type): Move to <bits/utility.h>.
 342         (variant_alternative, variant): Adjust qualification of
 343         _Nth_type.
 344         * testsuite/20_util/tuple/element_access/get_neg.cc: Prune
 345         additional errors from _Nth_type.
 346
 347 2021-11-04  Jonathan Wakely  <jwakely@redhat.com>
 348
 349         * include/std/variant (__detail::__variant::__emplace): New
 350         function template.
 351         (_Copy_assign_base::operator=): Reorder conditions to match
 352         bulleted list of effects in the standard. Use __emplace instead
 353         of _M_reset followed by _Construct.
 354         (_Move_assign_base::operator=): Likewise.
 355         (__construct_by_index): Remove.
 356         (variant::emplace): Use __emplace instead of _M_reset followed
 357         by __construct_by_index.
 358         (variant::swap): Hoist valueless cases out of visitor. Use
 359         __emplace to replace _M_reset followed by _Construct.
 360
 361 2021-11-04  Jonathan Wakely  <jwakely@redhat.com>
 362
 363         * include/std/variant (_Nth_type): Define partial
 364         specializations to reduce number of instantiations.
 365         (variant_size_v): Define partial specializations to avoid
 366         instantiations.
 367         (variant_alternative): Use _Nth_type. Add static assert.
 368         (__tuple_count, __tuple_count_v): Replace with ...
 369         (__count): New variable template.
 370         (_Variant_union): Add deleted constructor.
 371         (variant::__to_type): Use _Nth_type.
 372         (variant::emplace): Use _Nth_type. Add deleted overloads for
 373         invalid types and indices.
 374
 375 2021-11-04  Jonathan Wakely  <jwakely@redhat.com>
 376
 377         PR libstdc++/102912
 378         * include/std/variant (_Variant_storage::__index_of): Remove.
 379         (__variant_construct_single): Remove.
 380         (__variant_construct): Remove.
 381         (_Copy_ctor_base::_Copy_ctor_base(const _Copy_ctor_base&)): Do
 382         construction directly instead of using __variant_construct.
 383         (_Move_ctor_base::_Move_ctor_base(_Move_ctor_base&&)): Likewise.
 384         (_Move_ctor_base::_M_destructive_move()): Remove.
 385         (_Move_ctor_base::_M_destructive_copy()): Remove.
 386         (_Copy_assign_base::operator=(const _Copy_assign_base&)): Do
 387         construction directly instead of using _M_destructive_copy.
 388         (variant::swap): Do construction directly instead of using
 389         _M_destructive_move.
 390         * testsuite/20_util/variant/102912.cc: New test.
 391
 392 2021-11-03  Jonathan Wakely  <jwakely@redhat.com>
 393
 394         PR libstdc++/66742
 395         * include/bits/list.tcc (list::sort): Use mutable iterators for
 396         comparisons.
 397         * include/bits/stl_list.h (_Scratch_list::_Ptr_cmp): Likewise.
 398         * testsuite/23_containers/list/operations/66742.cc: Check
 399         non-const comparisons.
 400
 401 2021-11-03  Jonathan Wakely  <jwakely@redhat.com>
 402
 403         * include/std/valarray (valarray::valarray()): Add noexcept.
 404         (valarray::operator[]): Likewise.
 405
 406 2021-11-01  Jonathan Wakely  <jwakely@redhat.com>
 407
 408         * include/debug/stl_iterator.h (__valid_range): Add constexpr
 409         for C++20. Qualify call to avoid ADL.
 410         (__get_distance, __can_advance, __unsafe, __base): Likewise.
 411         * testsuite/25_algorithms/move/constexpr.cc: Also check with
 412         std::reverse_iterator arguments.
 413
 414 2021-11-01  Jonathan Wakely  <jwakely@redhat.com>
 415
 416         * include/std/span (span(Range&&)): Reorder constraints.
 417
 418 2021-11-01  Jonathan Wakely  <jwakely@redhat.com>
 419
 420         PR libstdc++/103022
 421         * include/std/valarray (begin, end): Do not dereference an empty
 422         valarray. Add noexcept and [[nodiscard]].
 423         * testsuite/26_numerics/valarray/range_access.cc: Check empty
 424         valarray. Check iterator properties. Run as well as compiling.
 425         * testsuite/26_numerics/valarray/range_access2.cc: Likewise.
 426         * testsuite/26_numerics/valarray/103022.cc: New test.
 427
 428 2021-10-29  Jonathan Wakely  <jwakely@redhat.com>
 429
 430         * testsuite/23_containers/stack/deduction.cc: Fix typo.
 431
 432 2021-10-26  Martin Sebor  <msebor@redhat.com>
 433
 434         * testsuite/21_strings/basic_string/capacity/1.cc: Also suppress
 435         -Wstringop-overread.
 436         * testsuite/27_io/filesystem/path/factory/u8path-char8_t.cc: Same.
 437
 438 2021-10-26  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 439
 440         * testsuite/28_regex/basic_regex/84110.cc (test01)
 441         [__cpp_exceptions]: Disambiguate extended.
 442
 443 2021-10-26  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 444
 445         * testsuite/17_intro/names.cc [__sun__] (r, x): Undef.
 446
 447 2021-10-22  Jonathan Wakely  <jwakely@redhat.com>
 448
 449         PR libstdc++/102894
 450         * include/std/any (make_any): Add SFINAE constraint.
 451         * testsuite/20_util/any/102894.cc: New test.
 452
 453 2021-10-21  Jonathan Wakely  <jwakely@redhat.com>
 454
 455         * doc/doxygen/stdheader.cc: Refactor. Use C++23. Add new
 456         headers.
 457         * scripts/run_doxygen: Fix post-processing of #include
 458         directives in man pages. Use new xg++ to compile helper program.
 459
 460 2021-10-21  Jonathan Wakely  <jwakely@redhat.com>
 461
 462         * include/bits/mofunc_impl.h: Add doxygen comments.
 463         * include/std/functional: Likewise.
 464
 465 2021-10-21  Jonathan Wakely  <jwakely@redhat.com>
 466
 467         * include/bits/alloc_traits.h: Suppress doxygen documentation.
 468         * include/bits/allocated_ptr.h: Likewise.
 469         * include/bits/enable_special_members.h: Likewise.
 470         * include/bits/hashtable.h: Likewise.
 471         * include/bits/hashtable_policy.h: Likewise.
 472         * include/bits/uses_allocator.h: Likewise.
 473         * include/bits/node_handle.h: Document node handles and suppress
 474         documentation for protected members.
 475         * include/std/any: Suppress documentation for implementation
 476         details.
 477
 478 2021-10-21  Patrick Palka  <ppalka@redhat.com>
 479
 480         PR libstdc++/102358
 481         * include/bits/stl_iterator.h (__niter_base): Make constexpr
 482         for C++20.
 483         (__miter_base): Likewise.
 484         * testsuite/25_algorithms/move/constexpr.cc: New test.
 485
 486 2021-10-21  Patrick Palka  <ppalka@redhat.com>
 487
 488         * include/std/ranges (istream_view): Replace this function
 489         template with an alias template as per P2432R1.
 490         (wistream_view): Define as per P2432R1.
 491         (views::_Istream, views::istream): Likewise.
 492         * testsuite/std/ranges/istream_view.cc (test07): New test.
 493
 494 2021-10-21  Patrick Palka  <ppalka@redhat.com>
 495
 496         * include/bits/ranges_util.h (views::_Drop): Forward declare.
 497         (subrange): Befriend views::_Drop.
 498         (subrange::_S_store_size): Declare constexpr instead of just
 499         const, remove obsolete comment.
 500         * include/std/ranges (views::__detail::__is_empty_view): Define.
 501         (views::__detail::__is_basic_string_view): Likewise.
 502         (views::__detail::__is_subrange): Likewise.
 503         (views::__detail::__is_iota_view): Likewise.
 504         (views::__detail::__can_take_view): Rename template parm _Tp to _Dp.
 505         (views::_Take): Rename template parm _Tp to _Dp, make it non-deducible
 506         and fix it to range_difference_t<_Range>.  Implement P1739R4 and
 507         LWG 3407 changes.
 508         (views::__detail::__can_drop_view): Rename template parm _Tp to _Dp.
 509         (views::_Drop): As with views::_Take.
 510         (views::_Counted): Implement P1739R4 changes.
 511         * include/std/span (__detail::__is_std_span): Rename to ...
 512         (__detail::__is_span): ... this and turn it into a variable
 513         template.
 514         (__detail::__is_std_array): Turn it into a variable template.
 515         (span::span): Adjust uses of __is_std_span and __is_std_array
 516         accordingly.
 517         * testsuite/std/ranges/adaptors/p1739.cc: New test.
 518
 519 2021-10-21  Patrick Palka  <ppalka@redhat.com>
 520
 521         * include/bits/stl_iterator.h (common_iterator::__arrow_proxy):
 522         Make fully constexpr as per LWG 3595.
 523         (common_iterator::__postfix_proxy): Likewise.
 524
 525 2021-10-21  Patrick Palka  <ppalka@redhat.com>
 526
 527         * include/std/ranges (lazy_split_view::base): Add forward_range
 528         constraint as per LWG 3591.
 529         (lazy_split_view::begin, lazy_split_view::end): Also check
 530         simpleness of _Pattern as per LWG 3592.
 531         (split_view::base): Relax copyable constraint as per LWG 3590.
 532
 533 2021-10-21  Patrick Palka  <ppalka@redhat.com>
 534
 535         * include/std/ranges (join_view::__iter_cat::_S_iter_cat): Adjust
 536         criteria for returning bidirectional_iterator_tag as per LWG 3535.
 537         (join_view::_Iterator::_S_iter_concept): Likewise.
 538
 539 2021-10-21  Patrick Palka  <ppalka@redhat.com>
 540
 541         * include/bits/ranges_base.h (viewable_range): Adjust as per
 542         LWG 3481.
 543         * testsuite/std/ranges/adaptors/all.cc (test07): New test.
 544
 545 2021-10-21  Jonathan Wakely  <jwakely@redhat.com>
 546
 547         PR libstdc++/102863
 548         * include/std/optional (optional::and_then, optional::transform):
 549         Remove requires-clause.
 550         * testsuite/20_util/optional/monadic/and_then.cc: Check
 551         overload resolution doesn't cause errors.
 552         * testsuite/20_util/optional/monadic/transform.cc: Likewise.
 553
 554 2021-10-20  Jonathan Wakely  <jwakely@redhat.com>
 555
 556         * testsuite/20_util/optional/monadic/transform.cc: Check that
 557         an rvalue result is not materialized too soon.
 558
 559 2021-10-19  Patrick Palka  <ppalka@redhat.com>
 560
 561         * include/std/ranges (iota_view::_Iterator::operator+): Adjust
 562         definition as per LWG 3580.
 563         (iota_view::_Iterator::operator-): Likewise.
 564
 565 2021-10-19  Patrick Palka  <ppalka@redhat.com>
 566
 567         * include/std/ranges (basic_istream_view::_M_object): Value
 568         initialize as per LWG 3568.
 569
 570 2021-10-19  Patrick Palka  <ppalka@redhat.com>
 571
 572         * include/bits/ranges_util.h
 573         (__detail::__uses_nonqualification_pointer_conversion): Define
 574         and use it ...
 575         (__detail::__convertible_to_nonslicing): ... here, as per LWG 3470.
 576         * testsuite/std/ranges/subrange/1.cc: New test.
 577
 578 2021-10-19  Patrick Palka  <ppalka@redhat.com>
 579
 580         * include/std/ranges (iota_view::_Iterator): Befriend iota_view.
 581         (iota_view::_Sentinel): Likewise.
 582         (iota_view::iota_view): Add three overloads, each taking an
 583         iterator/sentinel pair as per LWG 3523.
 584         * testsuite/std/ranges/iota/iota_view.cc (test06): New test.
 585
 586 2021-10-19  Patrick Palka  <ppalka@redhat.com>
 587
 588         * include/bits/ranges_base.h (view_interface): Forward declare.
 589         (__detail::__is_derived_from_view_interface_fn): Declare.
 590         (__detail::__is_derived_from_view_interface): Define as per LWG 3549.
 591         (enable_view): Adjust as per LWG 3549.
 592         * include/bits/ranges_util.h (view_interface): Don't derive from
 593         view_base.
 594         * include/std/ranges (filter_view): Revert r11-3504 change.
 595         (transform_view): Likewise.
 596         (take_view): Likewise.
 597         (take_while_view): Likewise.
 598         (drop_view): Likewise.
 599         (drop_while_view): Likewise.
 600         (join_view): Likewise.
 601         (lazy_split_view): Likewise.
 602         (split_view): Likewise.
 603         (reverse_view): Likewise.
 604         * testsuite/std/ranges/adaptors/sizeof.cc: Update expected sizes.
 605         * testsuite/std/ranges/view.cc (test_view::test_view): Remove
 606         this default ctor since views no longer need to be default initable.
 607         (test01): New test.
 608
 609 2021-10-19  Jonathan Wakely  <jwakely@redhat.com>
 610
 611         * src/c++11/random.cc (which_source): New helper function.
 612         (random_device::_M_getentropy()): Use which_source and return
 613         suitable values for sources other than device files.
 614         * testsuite/26_numerics/random/random_device/entropy.cc: New test.
 615
 616 2021-10-19  Jonathan Wakely  <jwakely@redhat.com>
 617
 618         * doc/Makefile.am (stamp-html-doxygen, stamp-html-doxygen)
 619         (stamp-latex-doxygen, stamp-man-doxygen): Fix recipes for
 620         relative ${top_srcdir}.
 621         * doc/Makefile.in: Regenerate.
 622
 623 2021-10-19  Jonathan Wakely  <jwakely@redhat.com>
 624
 625         * include/std/variant (_Uninitialized): Use an empty struct
 626         for the unused union member, instead of char.
 627
 628 2021-10-19  Jonathan Wakely  <jwakely@redhat.com>
 629
 630         * include/bits/stl_stack.h (stack(Iterator, Iterator)): Remove
 631         non-deducible template parameter from deduction guide.
 632         * testsuite/23_containers/stack/deduction.cc: Check new C++23
 633         deduction guides.
 634
 635 2021-10-19  Jonathan Wakely  <jwakely@redhat.com>
 636
 637         * include/std/optional (_Optional_payload_base::_Storage): Add
 638         constructor taking a callable function to invoke.
 639         (_Optional_payload_base::_M_apply): New function.
 640         (__cpp_lib_monadic_optional): Define for C++23.
 641         (optional::and_then, optional::transform, optional::or_else):
 642         Define for C++23.
 643         * include/std/ranges (__detail::__cached): Remove.
 644         (__detail::__non_propagating_cache): Remove use of __cached for
 645         contained value. Use _Optional_payload_base::_M_construct and
 646         _Optional_payload_base::_M_apply to set the contained value.
 647         * include/std/version (__cpp_lib_monadic_optional): Define.
 648         * testsuite/20_util/optional/monadic/and_then.cc: New test.
 649         * testsuite/20_util/optional/monadic/or_else.cc: New test.
 650         * testsuite/20_util/optional/monadic/or_else_neg.cc: New test.
 651         * testsuite/20_util/optional/monadic/transform.cc: New test.
 652         * testsuite/20_util/optional/monadic/version.cc: New test.
 653
 654 2021-10-19  Jonathan Wakely  <jwakely@redhat.com>
 655
 656         PR libstdc++/102825
 657         * include/bits/mofunc_impl.h (move_only_function): Remove
 658         invalid base initializer.
 659         * testsuite/20_util/move_only_function/cons.cc: Instantiate
 660         constructors to check bodies.
 661
 662 2021-10-15  Jonathan Wakely  <jwakely@redhat.com>
 663
 664         * include/bits/fs_path.h (path::_S_convert(T)): Avoid recursive
 665         call to function with deduced return type.
 666
 667 2021-10-15  Jonathan Wakely  <jwakely@redhat.com>
 668
 669         * include/bits/basic_string.h (__cpp_lib_string_resize_and_overwrite):
 670         Define for C++23.
 671         (basic_string::resize_and_overwrite): Declare.
 672         * include/bits/basic_string.tcc (basic_string::resize_and_overwrite):
 673         Define.
 674         * include/std/version (__cpp_lib_resize_and_overwrite): Define
 675         for C++23.
 676         * testsuite/21_strings/basic_string/capacity/char/resize_and_overwrite.cc:
 677         New test.
 678
 679 2021-10-15  Jonathan Wakely  <jwakely@redhat.com>
 680
 681         PR libstdc++/101263
 682         * include/std/ranges (__cached): New wrapper struct.
 683         (__non_propagating_cache): Use __cached for contained value.
 684         (__non_propagating_cache::_M_emplace_deref): Add constexpr. Use
 685         std::construct_at instead of placement new.
 686         * testsuite/std/ranges/adaptors/join.cc: Check constexpr works.
 687
 688 2021-10-15  Jonathan Wakely  <jwakely@redhat.com>
 689
 690         * include/std/variant (__cpp_lib_variant): Update value for
 691         C++20.
 692         (__variant_cast, __variant_construct): Add constexpr for C++20.
 693         (__variant_construct_single, __construct_by_index) Likewise. Use
 694         std::_Construct instead of placement new.
 695         (_Uninitialized<T, false>) [__cplusplus >= 202002]: Replace
 696         buffer with a union and define a destructor.
 697         (_Variadic_union) [__cplusplus >= 202002]: Add a specialization
 698         for non-trivial destruction.
 699         (_Variant_storage::__index_of): New helper variable template.
 700         (_Variant_storage::~_Variant_storage()): Add constexpr.
 701         (_Variant_storage::_M_reset()): Likewise.
 702         (_Copy_ctor_base, _Move_ctor_base): Likewise.
 703         (_Copy_assign_base, _Move_assign_base): Likewise.
 704         (variant, swap): Likewise.
 705         * include/std/version (__cpp_lib_variant): Update value for
 706         C++20.
 707         * testsuite/20_util/optional/version.cc: Check for exact value
 708         in C++17.
 709         * testsuite/20_util/variant/87619.cc: Increase timeout for
 710         C++20 mode.
 711         * testsuite/20_util/variant/constexpr.cc: New test.
 712         * testsuite/20_util/variant/version.cc: New test.
 713
 714 2021-10-15  Jonathan Wakely  <jwakely@redhat.com>
 715
 716         * include/std/variant (__detail::__variant::__get_storage):
 717         Remove unused function.
 718         (__variant_construct_by_index): Set index after construction is
 719         complete. Rename to ...
 720         (__detail::__variant::__construct_by_index): ... this.
 721         (variant): Use new name for __variant_construct_by_index friend
 722         declaration. Remove __get_storage friend declaration.
 723         (variant::emplace): Use new name and remove try-blocks.
 724
 725 2021-10-15  Jonathan Wakely  <jwakely@redhat.com>
 726
 727         * include/std/variant (_Variant_storage::_M_storage()): Remove.
 728         (__detail::__variant::__get_storage): Remove.
 729         (variant): Remove friend declaration of __get_storage.
 730
 731 2021-10-15  Jason Merrill  <jason@redhat.com>
 732
 733         * testsuite/20_util/integer_comparisons/greater_equal_neg.cc:
 734         * testsuite/20_util/integer_comparisons/greater_neg.cc:
 735         * testsuite/20_util/integer_comparisons/less_equal_neg.cc:
 736         Adjust expected message.
 737         * testsuite/lib/prune.exp: Prune 'in constexpr expansion'.
 738
 739 2021-10-14  Jonathan Wakely  <jwakely@redhat.com>
 740
 741         * include/std/variant (__variant::__get(in_place_index_t<N>, U&&)):
 742         Rename to __get_n and remove first argument. Replace pair of
 743         overloads with a single function using 'if constexpr'.
 744         (__variant::__get(Variant&&)): Adjust to use __get_n.
 745
 746 2021-10-14  Jonathan Wakely  <jwakely@redhat.com>
 747
 748         * include/bits/fs_path.h (path(path&&)): Make unconditionally
 749         noexcept.
 750         (path::_S_convert(T)): Add condtional noexcept.
 751
 752 2021-10-14  Jonathan Wakely  <jwakely@redhat.com>
 753
 754         PR libstdc++/102743
 755         * include/bits/fs_path.h (path::_S_convert(T)): Fix condition
 756         for returning the same string unchanged.
 757
 758 2021-10-14  Jonathan Wakely  <jwakely@redhat.com>
 759
 760         * include/bits/regex.h: Check __cpp_inline_variables instead of
 761         __cplusplus.
 762
 763 2021-10-14  Jonathan Wakely  <jwakely@redhat.com>
 764
 765         * testsuite/20_util/is_layout_compatible/version.cc: Check
 766         correct macro.
 767
 768 2021-10-14  Jonathan Wakely  <jwakely@redhat.com>
 769
 770         * include/bits/stl_construct.h (_Construct): Use
 771         std::construct_at when constant evaluated.
 772         * include/std/optional (_Storage, _Optional_payload, optional):
 773         Add constexpr as specified by P2231R1.
 774         * include/std/version (__cpp_lib_optional): Update value for
 775         C++20.
 776         * testsuite/20_util/optional/requirements.cc: Check feature test
 777         macro.
 778         * testsuite/20_util/optional/constexpr/assign.cc: New test.
 779         * testsuite/20_util/optional/constexpr/cons/conv.cc: New test.
 780         * testsuite/20_util/optional/constexpr/modifiers.cc: New test.
 781         * testsuite/20_util/optional/constexpr/swap.cc: New test.
 782         * testsuite/20_util/optional/version.cc: New test.
 783
 784 2021-10-13  Jonathan Wakely  <jwakely@redhat.com>
 785
 786         * include/bits/fs_path.h (__detail::__is_contiguous): Add
 787         partial specializations for pointers and __normal_iterator.
 788
 789 2021-10-13  Jonathan Wakely  <jwakely@redhat.com>
 790
 791         * testsuite/27_io/filesystem/path/construct/102592.C: Moved to...
 792         * testsuite/27_io/filesystem/path/construct/102592.cc: ...here.
 793         * testsuite/28_regex/match_results/102667.C: Moved to...
 794         * testsuite/28_regex/match_results/102667.cc: ...here.
 795
 796 2021-10-13  Jonathan Wakely  <jwakely@redhat.com>
 797
 798         * include/bits/fs_path.h (__detail::__is_contiguous): New
 799         variable template to identify contiguous iterators.
 800         (__detail::__unified_char8_t): New alias template to decide when
 801         to treat char8_t as char without encoding conversion.
 802         (__detail::__effective_range(const basic_string<C,T>&)): Use
 803         std::char_traits<C> for returned string view.
 804         (__detail::__effective_range(const basic_string_view<C,T>&)):
 805         Likewise.
 806         (__detail::__effective_range(const Source&)): Use
 807         __is_contiguous to detect mode cases of contiguous iterators.
 808         Use __unified_char8_t to return a std::string instead of
 809         std::u8string.
 810
 811 2021-10-13  Jonathan Wakely  <jwakely@redhat.com>
 812
 813         PR libstdc++/102592
 814         * include/bits/fs_path.h (path::path(Iter, Iter, format))
 815         (path::append(Iter, Iter), path::concat(Iter, Iter)): Call
 816         __string_from_range directly, instead of two-argument overload
 817         of _S_convert.
 818         (path::_S_convert(Iter, Iter)): Remove.
 819         * testsuite/27_io/filesystem/path/construct/102592.C: New test.
 820
 821 2021-10-13  Jonathan Wakely  <jwakely@redhat.com>
 822
 823         * include/bits/c++config (__terminate): Add extern "C++".
 824
 825 2021-10-12  Jonathan Wakely  <jwakely@redhat.com>
 826
 827         * testsuite/20_util/tuple/comparison_operators/overloaded.cc:
 828         Restore test for operator<.
 829         * testsuite/20_util/tuple/comparison_operators/overloaded2.cc:
 830         Adjust expected errors for C++20.
 831
 832 2021-10-12  Jonathan Wakely  <jwakely@redhat.com>
 833
 834         PR libstdc++/101960
 835         * include/std/tuple (_Tuple_impl(_Tuple_impl&&)): Define as
 836         defauled.
 837         * testsuite/20_util/tuple/cons/101960.cc: Check tuples with
 838         array elements before the last element.
 839
 840 2021-10-12  Jonathan Wakely  <jwakely@redhat.com>
 841
 842         * include/bits/stl_iterator_base_funcs.h (__advance): Add
 843         deleted overload to improve diagnostics.
 844         (__distance): Likewise.
 845
 846 2021-10-11  Jonathan Wakely  <jwakely@redhat.com>
 847
 848         * include/bits/atomic_timed_wait.h: Remove unused header.
 849         * include/bits/c++config (std:__terminate): Define.
 850         * include/bits/semaphore_base.h: Remove <exception> and use
 851         __terminate instead of terminate.
 852         * include/bits/std_thread.h: Likewise.
 853         * libsupc++/eh_terminate.cc (std::terminate): Use qualified-id
 854         to call __cxxabiv1::__terminate.
 855
 856 2021-10-11  Jonathan Wakely  <jwakely@redhat.com>
 857
 858         * include/bits/regex.h (basic_regex::assign(Iter, Iter)): Avoid
 859         std::__to_address by using poitner directly or using base()
 860         member of __normal_iterator.
 861
 862 2021-10-11  Jonathan Wakely  <jwakely@redhat.com>
 863
 864         * testsuite/18_support/numeric_limits/lowest.cc: Use
 865         numeric_limits<T>::is_integer instead of is_integral<T>::value.
 866
 867 2021-10-11  Jonathan Wakely  <jwakely@redhat.com>
 868
 869         PR libstdc++/89927
 870         * include/bits/regex.h (basic_regex(const _Ch_type*, size_t)):
 871         Add __glibcxx_requires_string_len assertion.
 872         (basic_regex::assign(InputIterator, InputIterator)): Add
 873         __glibcxx_requires_valid_range assertion.
 874         * include/bits/regex_scanner.tcc (_Scanner::_M_advance())
 875         (_Scanner::_M_scan_normal()): Use string literal in assertions.
 876
 877 2021-10-11  Jonathan Wakely  <jwakely@redhat.com>
 878
 879         PR libstdc++/102667
 880         * include/bits/regex.h (match_result::empty()): Optimize by
 881         calling the base function directly.
 882         (match_results::end()): Check _Base_type::empty() not empty().
 883         * testsuite/28_regex/match_results/102667.C: New test.
 884
 885 2021-10-08  Jonathan Wakely  <jwakely@redhat.com>
 886
 887         PR libstdc++/98725
 888         * testsuite/18_support/numeric_limits/lowest.cc: Remove use of
 889         _GLIBCXX_USE_WCHAR_T.
 890         * testsuite/18_support/numeric_limits/min_max.cc: Replace use of
 891         _GLIBCXX_USE_WCHAR_T with checks for WCHAR_MIN and WCHAR_MAX.
 892         * testsuite/20_util/from_chars/1_neg.cc: Remove use of
 893         _GLIBCXX_USE_WCHAR_T.
 894         * testsuite/20_util/function_objects/searchers.cc: Likewise. Use
 895         char_traits<wchar_t>::length instead of wcslen.
 896         * testsuite/20_util/hash/requirements/explicit_instantiation.cc:
 897         Likewise.
 898         * testsuite/20_util/is_arithmetic/value.cc: Likewise.
 899         * testsuite/20_util/is_compound/value.cc: Likewise.
 900         * testsuite/20_util/is_floating_point/value.cc: Likewise.
 901         * testsuite/20_util/is_fundamental/value.cc: Likewise.
 902         * testsuite/20_util/is_integral/value.cc: Likewise.
 903         * testsuite/20_util/is_signed/value.cc: Likewise.
 904         * testsuite/20_util/is_unsigned/value.cc: Likewise.
 905         * testsuite/20_util/is_void/value.cc: Likewise.
 906         * testsuite/20_util/make_signed/requirements/typedefs-1.cc:
 907         Likewise.
 908         * testsuite/20_util/make_signed/requirements/typedefs-2.cc:
 909         Likewise.
 910         * testsuite/20_util/make_signed/requirements/typedefs-3.cc:
 911         Likewise.
 912         * testsuite/20_util/make_signed/requirements/typedefs-4.cc:
 913         Likewise.
 914         * testsuite/20_util/make_unsigned/requirements/typedefs-1.cc:
 915         Likewise.
 916         * testsuite/20_util/make_unsigned/requirements/typedefs-2.cc:
 917         Likewise.
 918         * testsuite/20_util/make_unsigned/requirements/typedefs-3.cc:
 919         Likewise.
 920         * testsuite/20_util/to_chars/3.cc: Likewise.
 921         * testsuite/20_util/type_identity/requirements/typedefs.cc:
 922         Likewise.
 923         * testsuite/21_strings/basic_string/hash/debug.cc: Likewise.
 924         * testsuite/21_strings/basic_string/hash/hash.cc: Likewise.
 925         * testsuite/21_strings/basic_string/literals/types-char8_t.cc:
 926         Likewise.
 927         * testsuite/21_strings/basic_string/literals/types.cc: Likewise.
 928         * testsuite/21_strings/basic_string/literals/values-char8_t.cc:
 929         Likewise.
 930         * testsuite/21_strings/basic_string/literals/values.cc:
 931         Likewise.
 932         * testsuite/21_strings/basic_string/modifiers/64422.cc:
 933         Likewise.
 934         * testsuite/21_strings/basic_string/range_access/wchar_t/1.cc:
 935         Likewise.
 936         * testsuite/21_strings/basic_string/requirements/citerators.cc:
 937         Likewise.
 938         * testsuite/21_strings/basic_string/requirements/typedefs.cc:
 939         Likewise.
 940         * testsuite/21_strings/basic_string/types/pmr_typedefs.cc:
 941         Likewise.
 942         * testsuite/21_strings/basic_string_view/literals/types-char8_t.cc:
 943         Likewise.
 944         * testsuite/21_strings/basic_string_view/literals/types.cc:
 945         Likewise.
 946         * testsuite/21_strings/basic_string_view/literals/values-char8_t.cc:
 947         Likewise.
 948         * testsuite/21_strings/basic_string_view/literals/values.cc:
 949         Likewise.
 950         * testsuite/21_strings/basic_string_view/requirements/typedefs.cc:
 951         Likewise.
 952         * testsuite/21_strings/basic_string_view/typedefs.cc: Likewise.
 953         * testsuite/21_strings/char_traits/requirements/constexpr_functions.cc:
 954         Likewise.
 955         * testsuite/21_strings/char_traits/requirements/constexpr_functions_c++17.cc:
 956         Likewise.
 957         * testsuite/21_strings/char_traits/requirements/constexpr_functions_c++20.cc:
 958         Likewise.
 959         * testsuite/22_locale/ctype/is/string/89728_neg.cc: Likewise.
 960         * testsuite/25_algorithms/fill/4.cc: Likewise.
 961         * testsuite/25_algorithms/fill_n/1.cc: Likewise.
 962         * testsuite/experimental/functional/searchers.cc: Likewise. Use
 963         char_traits<wchar_t>::length instead of wcslen.
 964         * testsuite/experimental/polymorphic_allocator/pmr_typedefs_string.cc:
 965         Likewise.
 966         * testsuite/experimental/string_view/literals/types-char8_t.cc:
 967         Likewise.
 968         * testsuite/experimental/string_view/literals/types.cc:
 969         Likewise.
 970         * testsuite/experimental/string_view/literals/values-char8_t.cc:
 971         Likewise.
 972         * testsuite/experimental/string_view/literals/values.cc:
 973         Likewise.
 974         * testsuite/experimental/string_view/range_access/wchar_t/1.cc:
 975         Likewise.
 976         * testsuite/experimental/string_view/requirements/typedefs.cc:
 977         Likewise.
 978         * testsuite/experimental/string_view/typedefs.cc: Likewise.
 979         * testsuite/ext/vstring/range_access.cc: Likewise.
 980         * testsuite/std/concepts/concepts.lang/concept.arithmetic/integral.cc:
 981         Likewise.
 982         * testsuite/std/concepts/concepts.lang/concept.arithmetic/signed_integral.cc:
 983         Likewise.
 984         * testsuite/std/concepts/concepts.lang/concept.arithmetic/unsigned_integral.cc:
 985         Likewise.
 986         * testsuite/tr1/4_metaprogramming/is_arithmetic/value.cc:
 987         Likewise.
 988         * testsuite/tr1/4_metaprogramming/is_compound/value.cc:
 989         Likewise.
 990         * testsuite/tr1/4_metaprogramming/is_floating_point/value.cc:
 991         Likewise.
 992         * testsuite/tr1/4_metaprogramming/is_fundamental/value.cc:
 993         Likewise.
 994         * testsuite/tr1/4_metaprogramming/is_integral/value.cc:
 995         Likewise.
 996         * testsuite/tr1/4_metaprogramming/is_signed/value.cc: Likewise.
 997         * testsuite/tr1/4_metaprogramming/is_unsigned/value.cc:
 998         Likewise.
 999         * testsuite/tr1/4_metaprogramming/is_void/value.cc: Likewise.
1000         * testsuite/tr1/6_containers/hash/24799.cc: Likewise.
1001
1002 2021-10-08  Jonathan Wakely  <jwakely@redhat.com>
1003
1004         PR libstdc++/98725
1005         * include/std/ostream (operator<<(basic_ostream<char, Tr>&, wchar_t))
1006         (operator<<(basic_ostream<char, Tr>&, const wchar_t*)): Always
1007         define as deleted. Do not check _GLIBCXX_USE_WCHAR_T.
1008
1009 2021-10-08  Jonathan Wakely  <jwakely@redhat.com>
1010
1011         PR libstdc++/98725
1012         * include/bits/locale_conv.h (wstring_convert, wbuffer_convert):
1013         Define unconditionally. Do not check _GLIBCXX_USE_WCHAR_T.
1014
1015 2021-10-08  Jonathan Wakely  <jwakely@redhat.com>
1016
1017         PR libstdc++/98725
1018         * include/c_global/cstddef [!_GLIBCXX_USE_WCHAR_T]
1019         (__byte_operand<wchar_t>): Define specialization.
1020         * include/std/type_traits (__make_signed<wchar_t>)
1021         (__make_unsigned<wchar_t>): Remove redundant check for
1022         __WCHAR_TYPE__ being defined.
1023         * include/tr1/type_traits [!_GLIBCXX_USE_WCHAR_T]
1024         (__is_integral_helper<wchar_t>): Likewise.
1025
1026 2021-10-08  Jonathan Wakely  <jwakely@redhat.com>
1027
1028         PR libstdc++/98725
1029         * include/ext/rc_string_base.h [!_GLIBCXX_USE_WCHAR_T]
1030         (__rc_string_base<wchar_t>): Define member function.
1031         * include/ext/vstring.h [!_GLIBCXX_USE_WCHAR_T]
1032         (hash<__gnu_cxx::__wvstring>): Define specialization.
1033         * include/ext/vstring_fwd.h [!_GLIBCXX_USE_WCHAR_T] (__wvstring)
1034         (__wsso_string, __wrc_string): Declare typedefs.
1035
1036 2021-10-08  Jonathan Wakely  <jwakely@redhat.com>
1037
1038         PR libstdc++/98725
1039         * include/bits/char_traits.h (char_traits<wchar_t>): Define
1040         explicit specialization unconditionally.
1041         * include/bits/basic_string.h (hash<wstring>): Define
1042         unconditionally. Do not check _GLIBCXX_USE_WCHAR_T.
1043         * include/bits/stringfwd.h (wstring): Likewise.
1044         * include/debug/string (wstring): Likewise.
1045         * include/experimental/string_view (experimental::wstring_view)
1046         (hash<experimental::wstring_view>): Likewise.
1047         * include/std/string (pmr::wstring, hash<pmr::wstring>):
1048         Likewise.
1049         * include/std/string_view (wstring_view, hash<wstring_view>):
1050         Likewise.
1051
1052 2021-10-08  Jonathan Wakely  <jwakely@redhat.com>
1053
1054         * testsuite/27_io/basic_filebuf/close/81256.cc: Moved to...
1055         * testsuite/27_io/basic_filebuf/close/wchar_t/81256.cc: ...here.
1056
1057 2021-10-08  Jonathan Wakely  <jwakely@redhat.com>
1058
1059         * testsuite/22_locale/conversions/buffer/1.cc: Check
1060         _GLIBCXX_USE_WCHAR_T.
1061         * testsuite/22_locale/conversions/buffer/3.cc: Likewise. Add
1062         test using char16_t.
1063         * testsuite/22_locale/conversions/string/1.cc: Check
1064         _GLIBCXX_USE_WCHAR_T.
1065         * testsuite/27_io/filesystem/path/generic/generic_string.cc:
1066         Likewise.
1067         * testsuite/27_io/filesystem/path/modifiers/make_preferred.cc:
1068         Likewise.
1069         * testsuite/27_io/filesystem/path/native/alloc.cc: Likewise.
1070         * testsuite/27_io/filesystem/path/native/string-char8_t.cc:
1071         Likewise.
1072         * testsuite/27_io/filesystem/path/native/string.cc: Likewise.
1073         * testsuite/28_regex/algorithms/regex_match/extended/wstring_locale.cc:
1074         Likewise.
1075         * testsuite/experimental/filesystem/path/generic/generic_string.cc:
1076         Likewise.
1077         * testsuite/experimental/filesystem/path/native/alloc.cc:
1078         Likewise.
1079         * testsuite/experimental/filesystem/path/native/string-char8_t.cc:
1080         Likewise.
1081         * testsuite/experimental/filesystem/path/native/string.cc:
1082         Likewise.
1083
1084 2021-10-08  Jonathan Wakely  <jwakely@redhat.com>
1085
1086         * testsuite/26_numerics/bit/bit.rotate/rotr.cc:
1087         * testsuite/util/testsuite_common_types.h:
1088
1089 2021-10-08  Jonathan Wakely  <jwakely@redhat.com>
1090
1091         * testsuite/18_support/numeric_limits/40856.cc: Replace use of
1092         _GLIBCXX_USE_INT128.
1093         * testsuite/18_support/numeric_limits/dr559.cc: Likewise.
1094         * testsuite/18_support/numeric_limits/lowest.cc: Likewise.
1095         * testsuite/18_support/numeric_limits/max_digits10.cc: Likewise.
1096         * testsuite/20_util/is_floating_point/value.cc: Likewise.
1097         * testsuite/20_util/is_integral/value.cc: Likewise.
1098         * testsuite/20_util/is_signed/value.cc: Likewise.
1099         * testsuite/20_util/is_unsigned/value.cc: Likewise.
1100         * testsuite/20_util/make_signed/requirements/typedefs-1.cc:
1101         Likewise.
1102         * testsuite/20_util/make_signed/requirements/typedefs-2.cc:
1103         Likewise.
1104         * testsuite/20_util/make_unsigned/requirements/typedefs-1.cc:
1105         Likewise.
1106         * testsuite/20_util/make_unsigned/requirements/typedefs-2.cc:
1107         Likewise.
1108         * testsuite/20_util/type_identity/requirements/typedefs.cc:
1109         Likewise.
1110         * testsuite/26_numerics/bit/bit.count/countl_one.cc: Likewise.
1111         * testsuite/26_numerics/bit/bit.count/countl_zero.cc: Likewise.
1112         * testsuite/26_numerics/bit/bit.count/countr_one.cc: Likewise.
1113         * testsuite/26_numerics/bit/bit.count/countr_zero.cc: Likewise.
1114         * testsuite/26_numerics/bit/bit.count/popcount.cc: Likewise.
1115         * testsuite/26_numerics/bit/bit.pow.two/bit_ceil.cc: Likewise.
1116         * testsuite/26_numerics/bit/bit.pow.two/bit_floor.cc: Likewise.
1117         * testsuite/26_numerics/bit/bit.pow.two/bit_width.cc: Likewise.
1118         * testsuite/26_numerics/bit/bit.pow.two/has_single_bit.cc:
1119         Likewise.
1120         * testsuite/26_numerics/bit/bit.rotate/rotl.cc: Likewise.
1121
1122 2021-10-08  Jonathan Wakely  <jwakely@redhat.com>
1123
1124         * include/bits/hashtable_policy.h (_Select1st): Replace use of
1125         std::get.
1126         (_Select2nd): Remove.
1127         (_NodeBuilder::_S_build): Use _NodeGenerator::__node_type
1128         typedef instead of deducing it. Remove unnecessary piecewise
1129         construction.
1130         (_ReuseOrAllocNode): Make __node_type public.
1131         (_Map_base): Adjust partial specialization to be able to extract
1132         the mapped_type without using tuple_element.
1133         (_Map_base::at): Define inline
1134         * testsuite/23_containers/unordered_map/requirements/53339.cc:
1135         Remove XFAIL.
1136         * testsuite/23_containers/unordered_multimap/requirements/53339.cc:
1137         Likewise.
1138
1139 2021-10-08  Jonathan Wakely  <jwakely@redhat.com>
1140
1141         * include/bits/hashtable.h: Move static assertion to destructor.
1142         * include/bits/hashtable_policy.h: Deduce value type from node
1143         type without instantiating it.
1144
1145 2021-10-08  Jonathan Wakely  <jwakely@redhat.com>
1146
1147         * src/c++11/limits.cc: Fail if __cpp_inline_variables is
1148         defined.
1149
1150 2021-10-08  Jonathan Wakely  <jwakely@redhat.com>
1151
1152         PR libstdc++/92546
1153         * include/bits/ranges_algobase.h: Replace <iterator> with a
1154         subset of the headers it includes.
1155
1156 2021-10-08  Jonathan Wakely  <jwakely@redhat.com>
1157
1158         * include/experimental/deque (erase, erase_if): Revert changes
1159         to avoid debug mode overhead.
1160         * include/experimental/map (erase, erase_if): Likewise.
1161         * include/experimental/set (erase, erase_if): Likewise.
1162         * include/experimental/unordered_map (erase, erase_if):
1163         Likewise.
1164         * include/experimental/unordered_set (erase, erase_if):
1165         Likewise.
1166         * include/experimental/vector (erase, erase_if): Likewise.
1167         * include/std/deque (erase, erase_if): Likewise.
1168         * include/std/map (erase, erase_if): Likewise.
1169         * include/std/set (erase, erase_if): Likewise.
1170         * include/std/unordered_map (erase, erase_if): Likewise.
1171         * include/std/unordered_set (erase, erase_if): Likewise.
1172         * include/std/vector (erase, erase_if): Likewise.
1173
1174 2021-10-08  Jonathan Wakely  <jwakely@redhat.com>
1175
1176         * include/std/chrono (__detail::__units_suffix_misc): New
1177         helper function.
1178         (__detail::__units_suffix): Likewise.
1179         (chrono::operator<<(basic_ostream&, const duration&)): Define.
1180         * testsuite/20_util/duration/io.cc: New test.
1181
1182 2021-10-07  Jonathan Wakely  <jwakely@redhat.com>
1183
1184         * include/Makefile.am: Add new header.
1185         * include/Makefile.in: Regenerate.
1186         * include/std/chrono (duration, time_point, system_clock)
1187         (steady_clock, high_resolution_clock, chrono_literals, sys_time)
1188         (file_clock, file_time): Move to ...
1189         * include/bits/chrono.h: New file.
1190         * include/bits/atomic_futex.h: Include new header instead of
1191         <chrono>.
1192         * include/bits/atomic_timed_wait.h: Likewise.
1193         * include/bits/fs_fwd.h: Likewise.
1194         * include/bits/semaphore_base.h: Likewise.
1195         * include/bits/this_thread_sleep.h: Likewise.
1196         * include/bits/unique_lock.h: Likewise.
1197         * include/experimental/bits/fs_fwd.h: Likewise.
1198         * include/experimental/chrono: Likewise.
1199         * include/experimental/io_context: Likewise.
1200         * include/experimental/netfwd: Likewise.
1201         * include/experimental/timer: Likewise.
1202         * include/std/condition_variable: Likewise.
1203         * include/std/mutex: Likewise.
1204         * include/std/shared_mutex: Likewise.
1205
1206 2021-10-07  Jonathan Wakely  <jwakely@redhat.com>
1207
1208         PR libstdc++/102377
1209         * include/bits/atomic_wait.h (__waiter_pool_base:_S_align):
1210         Hardcode to 64 instead of using non-constant constant.
1211
1212 2021-10-07  Jonathan Wakely  <jwakely@redhat.com>
1213
1214         * include/bits/erase_if.h (__erase_nodes_if): Remove redundant
1215         __niter_base calls.
1216         * include/std/string (erase, erase_if): Likewise.
1217         * include/std/deque (erase, erase_if): Access non-debug
1218         container directly.
1219         * include/std/map (erase, erase_if): Likewise.
1220         * include/std/set (erase, erase_if): Likewise.
1221         * include/std/unordered_map (erase, erase_if): Likewise.
1222         * include/std/unordered_set (erase, erase_if): Likewise.
1223         * include/std/vector (erase, erase_if): Likewise.
1224         * include/experimental/deque (erase, erase_if): Likewise.
1225         * include/experimental/map (erase, erase_if): Likewise.
1226         * include/experimental/set (erase, erase_if): Likewise.
1227         * include/experimental/unordered_map (erase, erase_if):
1228         Likewise.
1229         * include/experimental/unordered_set (erase, erase_if):
1230         Likewise.
1231         * include/experimental/vector (erase, erase_if): Likewise.
1232
1233 2021-10-06  Jonathan Wakely  <jwakely@redhat.com>
1234
1235         * include/Makefile.am: Add new headers.
1236         * include/Makefile.in: Regenerate.
1237         * include/std/functional: Include <bits/move_only_function.h>.
1238         * include/std/version (__cpp_lib_move_only_function): Define.
1239         * include/bits/mofunc_impl.h: New file.
1240         * include/bits/move_only_function.h: New file.
1241         * testsuite/20_util/move_only_function/call.cc: New test.
1242         * testsuite/20_util/move_only_function/cons.cc: New test.
1243         * testsuite/20_util/move_only_function/move.cc: New test.
1244         * testsuite/20_util/move_only_function/version.cc: New test.
1245
1246 2021-10-05  Jonathan Wakely  <jwakely@redhat.com>
1247
1248         * testsuite/21_strings/basic_string_view/requirements/trivially_copyable.cc:
1249         New test.
1250         * testsuite/23_containers/span/trivially_copyable.cc: New test.
1251
1252 2021-10-05  Jonathan Wakely  <jwakely@redhat.com>
1253
1254         * include/bits/utility.h (__is_in_place_type_v): Define
1255         variable template to detect in_place_type_t specializations.
1256         (__is_in_place_type): Replace class template with alias
1257         template using __is_in_place_type_v.
1258         * include/std/any (any(T&&)): Check __is_in_place_type first and
1259         avoid instantiating is_copy_constructible unnecessarily.
1260
1261 2021-10-05  Jonathan Wakely  <jwakely@redhat.com>
1262
1263         * testsuite/20_util/integer_comparisons/greater.cc: New test.
1264
1265 2021-10-05  Jonathan Wakely  <jwakely@redhat.com>
1266
1267         * testsuite/27_io/basic_ostream/inserters_other/char/volatile_ptr.cc:
1268         Check result matches non-volatile pointer.
1269
1270 2021-10-05  Jonathan Wakely  <jwakely@redhat.com>
1271
1272         PR c++/102535
1273         * testsuite/20_util/is_trivially_constructible/value.cc: Adjust
1274         expected value for C++20.
1275
1276 2021-10-05  Jonathan Wakely  <jwakely@redhat.com>
1277
1278         * include/bits/std_function.h (_Any_data::_M_access): Add
1279         noexcept.
1280         (_Function_base::_Base_manager::_M_get_pointer): Likewise.
1281         (_Function_base::_Base_manager::_M_not_empty_function):
1282         Likewise.
1283
1284 2021-10-05  Jonathan Wakely  <jwakely@redhat.com>
1285
1286         * include/std/ostream (operator<<(const volatile void*)):
1287         Add new overload, as per P1147R1.
1288         * testsuite/27_io/basic_ostream/inserters_other/char/volatile_ptr.cc:
1289         New test.
1290
1291 2021-10-05  Jonathan Wakely  <jwakely@redhat.com>
1292
1293         * include/bits/stl_queue.h
1294         (__cpp_lib_adaptor_iterator_pair_constructor): Set to correct
1295         value.
1296         * include/bits/stl_stack.h
1297         (__cpp_lib_adaptor_iterator_pair_constructor): Likewise.
1298         * include/std/version
1299         (__cpp_lib_adaptor_iterator_pair_constructor): Likewise.
1300         * testsuite/23_containers/queue/cons_from_iters.cc: Update
1301         expected value.
1302         * testsuite/23_containers/stack/cons_from_iters.cc: Likewise.
1303
1304 2021-10-04  Jonathan Wakely  <jwakely@redhat.com>
1305
1306         * include/bits/forward_list.h (forward_list): Use non-deduced
1307         context for allocator parameter of allocator-extended copy and
1308         move constructors.
1309         * include/bits/stl_bvector.h (vector<bool>): Likewise.
1310         * include/bits/stl_deque.h (deque): Likewise.
1311         * include/bits/stl_list.h (list): Likewise.
1312         * include/bits/stl_map.h (map): Likewise.
1313         * include/bits/stl_multimap.h (multimap): Likewise.
1314         * include/bits/stl_multiset.h (multiset): Likewise.
1315         * include/bits/stl_set.h (set): Likewise.
1316         * include/bits/stl_vector.h (vector): Likewise.
1317         * include/bits/stl_queue.h (queue, priority_queue): Do not
1318         constrain Allocator template parameter of deduction guides that
1319         have a Container parameter.
1320         * include/bits/stl_stack.h (stack): Likewise.
1321         * include/debug/deque (__gnu_debug::deque): Use non-deduced
1322         context for allocator parameter of allocator-extended copy and
1323         move constructors.
1324         * include/debug/list (__gnu_debug::list): Likewise.
1325         * include/debug/map.h (__gnu_debug::map): Likewise.
1326         * include/debug/multimap.h (__gnu_debug::multimap): Likewise.
1327         * include/debug/multiset.h (__gnu_debug::multiset): Likewise.
1328         * include/debug/set.h (__gnu_debug::set): Likewise.
1329         * include/debug/vector (__gnu_debug::vector): Likewise.
1330         * testsuite/23_containers/deque/cons/deduction.cc: Test class
1331         template argument deduction with non-deduced allocator
1332         arguments.
1333         * testsuite/23_containers/forward_list/cons/deduction.cc:
1334         Likewise.
1335         * testsuite/23_containers/list/cons/deduction.cc: Likewise.
1336         * testsuite/23_containers/map/cons/deduction.cc: Likewise.
1337         * testsuite/23_containers/multimap/cons/deduction.cc: Likewise.
1338         * testsuite/23_containers/multiset/cons/deduction.cc: Likewise.
1339         * testsuite/23_containers/priority_queue/deduction.cc: Likewise.
1340         * testsuite/23_containers/queue/deduction.cc: Likewise.
1341         * testsuite/23_containers/set/cons/deduction.cc: Likewise.
1342         * testsuite/23_containers/stack/deduction.cc: Likewise.
1343         * testsuite/23_containers/unordered_map/cons/deduction.cc:
1344         Likewise.
1345         * testsuite/23_containers/unordered_multimap/cons/deduction.cc:
1346         Likewise.
1347         * testsuite/23_containers/unordered_multiset/cons/deduction.cc:
1348         Likewise.
1349         * testsuite/23_containers/unordered_set/cons/deduction.cc:
1350         Likewise.
1351         * testsuite/23_containers/vector/cons/deduction.cc: Likewise.
1352
1353 2021-10-04  Jonathan Wakely  <jwakely@redhat.com>
1354
1355         * include/std/variant (__detail::__variant::__as): Add missing
1356         noexcept to first overload.
1357
1358 2021-10-04  Jonathan Wakely  <jwakely@redhat.com>
1359
1360         * include/bits/basic_string.h (basic_string(nullptr_t)): Define
1361         as deleted.
1362         (operator=(nullptr_t)): Likewise.
1363         * include/bits/cow_string.h (basic_string(nullptr_t)): Likewise.
1364         (operator=(nullptr_t)): Likewise.
1365         * include/std/string_view (basic_string_view(nullptr_t)):
1366         Likewise.
1367         * testsuite/21_strings/basic_string/cons/char/nullptr.cc: New test.
1368         * testsuite/21_strings/basic_string_view/cons/char/nonnull.cc:
1369         Change dg-warning to dg-error.
1370         * testsuite/21_strings/basic_string_view/cons/wchar_t/nonnull.cc:
1371         Likewise.
1372
1373 2021-10-02  Jonathan Wakely  <jwakely@redhat.com>
1374
1375         * src/c++17/fs_ops.cc (create_directory): Fix typo in enum name.
1376         * src/filesystem/ops-common.h (__last_system_error): Add
1377         explicit cast to avoid narrowing conversion.
1378         (do_space): Fix type in function name.
1379
1380 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1381
1382         PR libstdc++/102100
1383         * include/Makefile.am (c++config.h): Define
1384         _GLIBCXX_VERBOSE_ASSERT based on configure output.
1385         * include/Makefile.in: Regenerate.
1386         * include/bits/c++config: Fix condition for verbose assertions.
1387
1388 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1389
1390         PR libstdc++/92546
1391         * include/bits/erase_if.h (__erase_nodes_if): Use __niter_base to
1392         unwrap debug iterators.
1393         * include/bits/refwrap.h: Do not error if included in C++03.
1394         * include/bits/stl_algo.h (__remove_if): Move to ...
1395         * include/bits/stl_algobase.h (__remove_if): ... here.
1396         * include/std/deque (erase, erase_if): Use __remove_if instead of
1397         remove and remove_if.
1398         * include/std/string (erase, erase_if): Likewise.
1399         * include/std/vector (erase, erase_if): Likewise.
1400
1401 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1402
1403         PR libstdc++/66742
1404         * include/bits/list.tcc (list::sort()): Use _Scratch_list
1405         objects for splicing and merging.
1406         (list::sort(StrictWeakOrdering)): Likewise.
1407         * include/bits/stl_list.h (__detail::_Scratch_list): New type.
1408         * src/c++98/list.cc (_List_node_base::_M_transfer): Add
1409         assertion for --enable-libstdcxx-debug library.
1410         * testsuite/23_containers/list/operations/66742.cc: New test.
1411
1412 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1413
1414         PR libstdc++/100612
1415         * include/std/thread (__pmf_expects_stop_token): New variable
1416         template to detect a pointer to member function that needs a
1417         stop_token to be added to the arguments.
1418         (jthread::__S_create): Use __pmf_expects_stop_token.
1419         (jthread::__S_create_pmf): New function.
1420         * testsuite/30_threads/jthread/100612.cc: New test.
1421
1422 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1423
1424         * include/bits/stl_queue.h
1425         (__cpp_lib_adaptor_iterator_pair_constructor): Define for C++23, as
1426         per P1425R4.
1427         (queue(InputIterator, InputIterator)): Likewise.
1428         (queue(InputIterator, InputIterator, const Alloc&)): Likewise.
1429         * include/bits/stl_stack.h
1430         (__cpp_lib_adaptor_iterator_pair_constructor): Likewise.
1431         (stack(InputIterator, InputIterator)): Likewise.
1432         (stack(InputIterator, InputIterator, const Alloc&)): Likewise.
1433         * include/std/version (__cpp_lib_adaptor_iterator_pair_constructor):
1434         Define.
1435         * testsuite/23_containers/queue/cons_from_iters.cc: New test.
1436         * testsuite/23_containers/stack/cons_from_iters.cc: New test.
1437
1438 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1439
1440         * include/bits/stl_queue.h (priority_queue): Add
1441         allocator-extended overloads for constructors taking iterator.
1442         * testsuite/23_containers/priority_queue/lwg3506.cc: New test.
1443
1444 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1445
1446         * include/bits/stl_queue.h (priority_queue): Construct sequence
1447         from iterators when no sequence argument is present (LWG 3529).
1448         * testsuite/23_containers/priority_queue/lwg3529.cc: New test.
1449
1450 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1451
1452         * include/bits/stl_queue.h (priority_queue): Constrain
1453         constructors with InputIterator parameters (LWG 3522).
1454         * testsuite/23_containers/priority_queue/lwg3522.cc: New test.
1455
1456 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1457
1458         * include/bits/ranges_base.h (ranges::distance): Split overload
1459         into two (LWG 3392).
1460         * testsuite/24_iterators/range_operations/lwg3392.cc: New test.
1461
1462 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1463
1464         * testsuite/30_threads/thread/cons/3.cc: Remove derivation from
1465         std::unary_function.
1466         * testsuite/30_threads/thread/cons/4.cc: Likewise.
1467         * testsuite/30_threads/thread/cons/5.cc: Likewise.
1468
1469 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1470
1471         * testsuite/ext/pb_ds/example/basic_multimap.cc: Remove
1472         unnecesary derivation from std::unary_function.
1473         * testsuite/ext/pb_ds/example/erase_if.cc: Likewise.
1474         * testsuite/ext/pb_ds/example/hash_illegal_resize.cc: Likewise.
1475         * testsuite/ext/pb_ds/example/hash_initial_size.cc: Likewise.
1476         * testsuite/ext/pb_ds/example/hash_load_set_change.cc: Likewise.
1477         * testsuite/ext/pb_ds/example/hash_mod.cc: Likewise.
1478         * testsuite/ext/pb_ds/example/hash_resize.cc: Likewise.
1479         * testsuite/ext/pb_ds/example/hash_shift_mask.cc: Likewise.
1480         * testsuite/ext/pb_ds/example/priority_queue_dijkstra.cc:
1481         Likewise.
1482         * testsuite/ext/pb_ds/example/ranged_hash.cc: Likewise.
1483         * testsuite/ext/pb_ds/example/store_hash.cc: Likewise.
1484
1485 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1486
1487         * src/c++11/functexcept.cc (__throw_out_of_range_fmt): Do not
1488         expand the format string for freestanding, or non-vebose, or if
1489         we're just going to abort anyway.
1490         * src/c++11/snprintf_lite.cc: Remove unused header and
1491         declaration.
1492
1493 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1494
1495         * include/std/variant (__do_visit): Use variant_npos instead of
1496         literal -1 that requires a narrowing conversion.
1497
1498 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1499
1500         PR libstdc++/99327
1501         * src/filesystem/ops-common.h (__unsupported): New function to
1502         return a suitable error code for missing functionality.
1503         (posix::off_t): New typedef.
1504         (posix::*): Set errno to ENOSYS instead of ENOTSUP for no-op
1505         fallback implementations.
1506         (do_copy_file): Replace uses of errc::not_supported.
1507         * src/c++17/fs_ops.cc (fs::copy, fs::copy_file, create_dir)
1508         (fs::create_directory, fs::create_directory_symlink)
1509         (fs::create_hard_link, fs::create_symlink, fs::current_path)
1510         (fs::equivalent, do_stat, fs::file_size, fs::hard_link_count)
1511         (fs::last_write_time, fs::permissions, fs::read_symlink):
1512         Replace uses of errc::not_supported.
1513         (fs::resize_file): Qualify off_t.
1514         * src/filesystem/ops.cc (fs::copy, fs::copy_file, create_dir)
1515         (fs::create_directory, fs::create_directory_symlink)
1516         (fs::create_hard_link, fs::create_symlink, fs::current_path)
1517         (fs::equivalent, do_stat, fs::file_size, fs::last_write_time)
1518         (fs::permissions, fs::read_symlink, fs::system_complete):
1519         Replace uses of errc::not_supported.
1520         (fs::resize_file): Qualify off_t and enable unconditionally.
1521         * testsuite/19_diagnostics/system_error/cons-1.cc: Likewise.
1522
1523 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1524
1525         * src/filesystem/ops-common.h (last_error): New helper function.
1526         (filesystem::do_space): Use last_error().
1527         * src/c++17/fs_ops.cc (fs::absolute, fs::create_hard_link)
1528         (fs::equivalent, fs::remove, fs::temp_directory_path): Use
1529         last_error().
1530         * src/filesystem/ops.cc (fs::create_hard_link)
1531         (fs::remove, fs::temp_directory_path): Likewise.
1532
1533 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1534
1535         * include/std/type_traits (__conditional): New class template
1536         for internal uses of std::conditional.
1537         (__conditional_t): New alias template to replace conditional_t.
1538         (__and_, __or_, __result_of_memfun, __result_of_memobj): Use
1539         __conditional_t instead of conditional::type.
1540         * include/bits/atomic_base.h (__atomic_impl::_Diff): Likewise.
1541         * include/bits/hashtable.h (_Hashtable): Likewise.
1542         * include/bits/hashtable_policy.h (_Node_iterator, _Insert_base)
1543         (_Local_iterator): Likewise. Replace typedefs with
1544         using-declarations.
1545         * include/bits/move.h (move_if_noexcept): Use __conditional_t.
1546         * include/bits/parse_numbers.h (_Select_int_base): Likewise.
1547         * include/bits/ptr_traits.h (__make_not_void): Likewise.
1548         * include/bits/ranges_algobase.h (__copy_or_move_backward)
1549         (__copy_or_move): Likewise.
1550         * include/bits/ranges_base.h (borrowed_iterator_t): Likewise.
1551         * include/bits/ranges_util.h (borrowed_subrange_t): Likewise.
1552         * include/bits/regex_compiler.h (_BracketMatcher): Use
1553         __conditional_t. Replace typedefs with using-declarations.
1554         * include/bits/shared_ptr_base.h (__shared_count): Use
1555         __conditional_t.
1556         * include/bits/stl_algobase.h (__copy_move, __copy_move_backward):
1557         Likewise.
1558         * include/bits/stl_iterator.h (__detail::__clamp_iter_cat)
1559         (reverse_iterator::iterator_concept)
1560         (__make_move_if_noexcept_iterator)
1561         (iterator_traits<common_iterator<_It, _Sent>>)
1562         (iterator_traits<counted_iterator<_It>>): Likewise.
1563         * include/bits/stl_pair.h (_PCC, pair::operator=): Likewise.
1564         * include/bits/stl_tree.h (_Rb_tree::insert_return_type)
1565         (_Rb_tree::_M_clone_node): Likewise.
1566         * include/bits/unique_ptr.h (unique_ptr(unique_ptr<U,E>&&)):
1567         Likewise.
1568         * include/bits/uses_allocator.h (__uses_alloc): Likewise.
1569         (__is_uses_allocator_predicate): Likewise.
1570         * include/debug/functions.h (__foreign_iterator_aux2): Likewise.
1571         * include/experimental/any (any::_Manager, __any_caster):
1572         Likewise.
1573         * include/experimental/executor (async_completion): Likewise.
1574         * include/experimental/functional (__boyer_moore_base_t):
1575         Likewise.
1576         * include/std/any (any::_Manager): Likewise.
1577         * include/std/functional (__boyer_moore_base_t): Likewise.
1578         * include/std/ranges (borrowed_iterator_t)
1579         (borrowed_subrange_t, __detail::__maybe_present_t)
1580         (__detail::__maybe_const_t, split_view): Likewise.
1581         * include/std/tuple (__empty_not_final, tuple::operator=):
1582         Likewise.
1583         * include/std/variant (__detail::__variant::__get_t): Likewise.
1584
1585 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1586
1587         PR libstdc++/78113
1588         * include/std/variant (__do_visit): Use a switch when we have a
1589         single variant with a small number of alternatives.
1590
1591 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1592
1593         PR libstdc++/90943
1594         * include/std/variant (__cpp_lib_variant): Update value.
1595         (__detail::__variant::__as): New helpers implementing the
1596         as-variant exposition-only function templates.
1597         (visit, visit<R>): Use __as to upcast the variant parameters.
1598         * include/std/version (__cpp_lib_variant): Update value.
1599         * testsuite/20_util/variant/visit_inherited.cc: New test.
1600
1601 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1602
1603         * include/bits/stl_iterator.h (__normal_iterator): Simplify
1604         converting constructor and do not require _Container::pointer.
1605
1606 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1607
1608         * include/bits/cow_string.h [_GLIBCXX_FULLY_DYNAMIC_STRING]
1609         (basic_string(basic_string&&)): Add noexcept and avoid
1610         allocation, by sharing rep with the rvalue string.
1611
1612 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1613
1614         * include/bits/stl_iterator.h (common_iterator::__arrow_proxy)
1615         (common_iterator::__postfix_proxy): Add noexcept.
1616
1617 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1618
1619         PR libstdc++/94418
1620         * include/bits/stl_iterator.h (reverse_iterator): Use
1621         conditional noexcept on constructors and assignment operators.
1622         * testsuite/24_iterators/reverse_iterator/noexcept.cc: New test.
1623
1624 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1625
1626         PR libstdc++/100153
1627         * include/bits/vector.tcc (vector<bool>::_M_shrink_to_fit()):
1628         When size() is zero just deallocate and reset.
1629
1630 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1631
1632         PR libstdc++/96733
1633         * include/bits/stl_algo.h (clamp): Use std::min and std::max.
1634
1635 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1636
1637         * include/bits/regex.h (basic_regex::multiline): Define for
1638         non-strict C++11 and C++14 modes.
1639         * include/bits/regex_constants.h (regex_constants::multiline):
1640         Add _GLIBCXX_RESOLVE_LIB_DEFECTS comment.
1641
1642 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1643
1644         * testsuite/25_algorithms/is_permutation/2.cc: Include <iterator>.
1645
1646 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1647
1648         * include/bits/stream_iterator.h (istream_iterator): Add
1649         noexcept to constructors and non-throwing member functions and
1650         friend functions.
1651         (ostream_iterator): Likewise.
1652
1653 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1654
1655         * include/bits/boost_concept_check.h (_Is_vector_bool_iterator):
1656         New trait to identify vector<bool> iterators, including debug
1657         ones.
1658         (_ForwardIteratorReferenceConcept): Add default template
1659         argument using _Is_vector_bool_iterator and use it in partial
1660         specialization for the vector<bool> cases.
1661         (_Mutable_ForwardIteratorReferenceConcept): Likewise.
1662         * testsuite/24_iterators/operations/prev_neg.cc: Adjust dg-error
1663         line number.
1664
1665 2021-10-01  Jonathan Wakely  <jwakely@redhat.com>
1666
1667         * include/bits/list.tcc (list::merge): Remove call to size() and
1668         try-catch block. Use _Finalize_merge instead.
1669         * include/bits/stl_list.h (list::_Finalize_merge): New
1670         scope guard type to update _M_size members after a merge.
1671
1672 2021-09-30  Jonathan Wakely  <jwakely@redhat.com>
1673
1674         * include/bits/regex.h (basic_regex::multiline): Fix #if
1675         condition.
1676
1677 2021-09-29  Jonathan Wakely  <jwakely@redhat.com>
1678
1679         * include/bits/regex.h (basic_regex::multiline): Define constant
1680         for C++17.
1681         * include/bits/regex_constants.h (regex_constants::multiline):
1682         Define constant for C++17.
1683         (regex_constants::__multiline): Define duplicate constant for
1684         internal use in C++11 and C++14.
1685         * include/bits/regex_executor.h (_Executor::_M_match_multiline()):
1686         New member function.
1687         (_Executor::_M_is_line_terminator(_CharT)): New member function.
1688         (_Executor::_M_at_begin(), _Executor::_M_at_end()): Use new
1689         member functions to support multiline matches.
1690         * testsuite/28_regex/algorithms/regex_match/multiline.cc: New test.
1691
1692 2021-09-29  Jonathan Wakely  <jwakely@redhat.com>
1693
1694         * include/bits/regex_compiler.h (_Compiler::_S_validate): New
1695         function.
1696         * include/bits/regex_compiler.tcc (_Compiler::_Compiler): Use
1697         _S_validate to check flags.
1698         * include/bits/regex_error.h (_S_grammar): New error code for
1699         internal use.
1700         * testsuite/28_regex/basic_regex/ctors/grammar.cc: New test.
1701
1702 2021-09-29  Jonathan Wakely  <jwakely@redhat.com>
1703
1704         PR libstdc++/84110
1705         * include/bits/regex_error.h (regex_constants::_S_null): New
1706         error code for internal use.
1707         * include/bits/regex_scanner.tcc (_Scanner::_M_scan_normal()):
1708         Check for null character.
1709         * testsuite/28_regex/basic_regex/84110.cc: New test.
1710
1711 2021-09-29  Jonathan Wakely  <jwakely@redhat.com>
1712
1713         * include/bits/regex.h (__detail::__is_contiguous_iter): Move
1714         here from <bits/regex_compiler.h>.
1715         (basic_regex::_M_compile): New function to compile an NFA from
1716         a regular expression string.
1717         (basic_regex::basic_regex): Use _M_compile instead of delegating
1718         to other constructors.
1719         (basic_regex::operator=(const basic_regex&)): Define as
1720         defaulted.
1721         (basic_regex::operator=(initializer_list<C>)): Use _M_compile.
1722         (basic_regex::assign(const basic_regex&)): Use copy assignment.
1723         (basic_regex::assign(basic_regex&&)): Use move assignment.
1724         (basic_regex::assign(const C*, flag_type)): Use _M_compile
1725         instead of constructing a temporary string.
1726         (basic_regex::assign(const C*, size_t, flag_type)): Likewise.
1727         (basic_regex::assign(const basic_string<C,T,A>&, flag_type)):
1728         Use _M_compile instead of constructing a temporary basic_regex.
1729         (basic_regex::assign(InputIter, InputIter, flag_type)): Avoid
1730         constructing a temporary string for contiguous iterators of the
1731         right value type.
1732         * include/bits/regex_compiler.h (__is_contiguous_iter): Move to
1733         <bits/regex.h>.
1734         (__enable_if_contiguous_iter, __disable_if_contiguous_iter)
1735         (__compile_nfa): Remove.
1736         * testsuite/28_regex/basic_regex/assign/exception_safety.cc: New
1737         test.
1738         * testsuite/28_regex/basic_regex/ctors/char/other.cc: New test.
1739
1740 2021-09-28  Jonathan Wakely  <jwakely@redhat.com>
1741
1742         * include/bits/atomic_timed_wait.h (__platform_wait_until_impl):
1743         Return false for ETIMEDOUT and true otherwise.
1744
1745 2021-09-28  François Dumont  <fdumont@gcc.gnu.org>
1746
1747         * testsuite/20_util/default_delete/48631_neg.cc: Adapt dg-prune-output message
1748         to also match message with '__8' in it.
1749
1750 2021-09-28  Jonathan Wakely  <jwakely@redhat.com>
1751
1752         * include/bits/regex_automaton.h (_NFA_base::_SizeT): Remove.
1753         * include/bits/regex_compiler.h (_Compiler::_IterT): Remove.
1754         * include/bits/regex_compiler.tcc: Likewise.
1755         * include/bits/regex_scanner.h (_Scanner::_IterT): Remove.
1756         * include/bits/regex_scanner.tcc: Likewise.
1757
1758 2021-09-28  Jonathan Wakely  <jwakely@redhat.com>
1759
1760         * include/bits/regex_compiler.tcc: Add line break in empty while
1761         statement.
1762         * include/bits/regex_executor.tcc: Avoid unused parameter
1763         warning.
1764
1765 2021-09-28  Jonathan Wakely  <jwakely@redhat.com>
1766
1767         * include/bits/regex.h (basic_regex, swap): Add noexcept to
1768         non-throwing functions.
1769         * include/bits/regex_automaton.h (_State_base, _State)
1770         (_NFA_base): Likewise.
1771         * include/bits/regex_compiler.h (_Compiler): Likewise.
1772         * include/bits/regex_error.h (regex_error::code()): Likewise.
1773         * include/bits/regex_scanner.h (_Scanner): Likewise.
1774
1775 2021-09-28  Jonathan Wakely  <jwakely@redhat.com>
1776
1777         * include/bits/atomic_wait.h (_GLIBCXX_HAVE_PLATFORM_WAIT):
1778         Define before first attempt to check it.
1779
1780 2021-09-28  Jonathan Wakely  <jwakely@redhat.com>
1781
1782         * testsuite/23_containers/priority_queue/requirements/explicit_instantiation/1.cc:
1783         Do not check non-default constructible sequences when
1784         _GLIBCXX_CONCEPT_CHECKS is defined.
1785         * testsuite/23_containers/priority_queue/requirements/explicit_instantiation/1_c++98.cc:
1786         Likewise.
1787         * testsuite/23_containers/queue/requirements/explicit_instantiation/1.cc:
1788         Likewise.
1789         * testsuite/23_containers/queue/requirements/explicit_instantiation/1_c++98.cc:
1790         Likewise.
1791         * testsuite/23_containers/stack/requirements/explicit_instantiation/1.cc:
1792         Likewise.
1793         * testsuite/23_containers/stack/requirements/explicit_instantiation/1_c++98.cc:
1794         Likewise.
1795
1796 2021-09-28  Jonathan Wakely  <jwakely@redhat.com>
1797
1798         * testsuite/23_containers/deque/requirements/explicit_instantiation/3.cc:
1799         Do not test implicit allocator rebinding when _GLIBCXX_CONCEPT_CHECKS
1800         is defined.
1801         * testsuite/23_containers/forward_list/requirements/explicit_instantiation/3.cc:
1802         Likewise.
1803         * testsuite/23_containers/list/requirements/explicit_instantiation/3.cc:
1804         Likewise.
1805         * testsuite/23_containers/list/requirements/explicit_instantiation/5.cc:
1806         Likewise.
1807         * testsuite/23_containers/map/requirements/explicit_instantiation/3.cc:
1808         Likewise.
1809         * testsuite/23_containers/map/requirements/explicit_instantiation/5.cc:
1810         Likewise.
1811         * testsuite/23_containers/multimap/requirements/explicit_instantiation/3.cc:
1812         Likewise.
1813         * testsuite/23_containers/multimap/requirements/explicit_instantiation/5.cc:
1814         Likewise.
1815         * testsuite/23_containers/multiset/requirements/explicit_instantiation/3.cc:
1816         Likewise.
1817         * testsuite/23_containers/multiset/requirements/explicit_instantiation/5.cc:
1818         Likewise.
1819         * testsuite/23_containers/set/requirements/explicit_instantiation/3.cc:
1820         Likewise.
1821         * testsuite/23_containers/set/requirements/explicit_instantiation/5.cc:
1822         Likewise.
1823         * testsuite/23_containers/unordered_map/requirements/explicit_instantiation/3.cc:
1824         Likewise.
1825         * testsuite/23_containers/unordered_multimap/requirements/explicit_instantiation/3.cc:
1826         Likewise.
1827         * testsuite/23_containers/unordered_multiset/requirements/explicit_instantiation/3.cc:
1828         Likewise.
1829         * testsuite/23_containers/unordered_set/requirements/explicit_instantiation/3.cc:
1830         Likewise.
1831         * testsuite/23_containers/vector/ext_pointer/explicit_instantiation/3.cc:
1832         Likewise.
1833         * testsuite/23_containers/vector/requirements/explicit_instantiation/3.cc:
1834         Likewise.
1835
1836 2021-09-28  Jonathan Wakely  <jwakely@redhat.com>
1837
1838         * include/bits/boost_concept_check.h (_ForwardIteratorConcept)
1839         (_BidirectionalIteratorConcept, _RandomAccessIteratorConcept):
1840         Check result types of iterator operations.
1841         (_Mutable_ForwardIteratorConcept): Check that iterator's
1842         reference type is a reference to its value type.
1843         (_Mutable_BidirectionalIteratorConcept): Do not require the
1844         value type to be assignable.
1845         (_Mutable_RandomAccessIteratorConcept): Likewise.
1846         * testsuite/24_iterators/operations/prev_neg.cc: Adjust dg-error
1847         line number.
1848
1849 2021-09-28  Jonathan Wakely  <jwakely@redhat.com>
1850
1851         * testsuite/25_algorithms/copy/34595.cc: Add missing operation
1852         for type used as an iterator.
1853         * testsuite/25_algorithms/unique_copy/check_type.cc: Likewise.
1854
1855 2021-09-28  Jonathan Wakely  <jwakely@redhat.com>
1856
1857         * testsuite/20_util/is_nothrow_swappable/value.h: Use custom
1858         comparison function for priority_queue of type with no
1859         relational operators.
1860         * testsuite/20_util/is_swappable/value.h: Likewise.
1861         * testsuite/24_iterators/output/concept.cc: Add operator< to
1862         type used in set.
1863
1864 2021-09-28  Jonathan Wakely  <jwakely@redhat.com>
1865
1866         * include/bits/boost_concept_check.h (_OutputIteratorConcept):
1867         Use a function to preserve value category of the type.
1868         * include/bits/stl_algobase.h (copy, move, fill_n): Use a
1869         reference as the second argument for _OutputIteratorConcept.
1870         (copy_backward, move_backward): Use _OutputIteratorConcept
1871         instead of _ConvertibleConcept.
1872
1873 2021-09-28  Jonathan Wakely  <jwakely@redhat.com>
1874
1875         * include/bits/stl_iterator.h (pointer_traits): Define partial
1876         specialization for __normal_iterator.
1877         * testsuite/24_iterators/normal_iterator/to_address.cc: New test.
1878
1879 2021-09-28  Jonathan Wakely  <jwakely@redhat.com>
1880
1881         * include/bits/move.h (forward(remove_reference_t<T>&&)):
1882         Improve text of static_assert.
1883         * testsuite/20_util/forward/c_neg.cc: Adjust dg-error.
1884         * testsuite/20_util/forward/f_neg.cc: Likewise.
1885
1886 2021-09-28  Jonathan Wakely  <jwakely@redhat.com>
1887
1888         PR libstdc++/102499
1889         * include/bits/fs_path.h (path::begin, path::end): Add noexcept
1890         to declarations, to match definitions.
1891
1892 2021-09-24  Jonathan Wakely  <jwakely@redhat.com>
1893
1894         * include/bits/range_access.h (cbegin, cend): Remove redundant
1895         'inline' specifier.
1896
1897 2021-09-23  Jonathan Wakely  <jwakely@redhat.com>
1898
1899         * testsuite/20_util/specialized_algorithms/memory_management_tools/destroy_neg.cc:
1900         Remove dg-error lines for C++20-only errors.
1901
1902 2021-09-23  Jonathan Wakely  <jwakely@redhat.com>
1903
1904         * testsuite/19_diagnostics/headers/system_error/93151.cc:
1905         Disable PCH.
1906
1907 2021-09-23  Jonathan Wakely  <jwakely@redhat.com>
1908
1909         * src/c++11/system_error.cc (system_error_category) [_WIN32]:
1910         Map Windows error codes to generic POSIX error numbers. Use
1911         FormatMessage instead of strerror.
1912         * testsuite/19_diagnostics/error_category/system_category.cc:
1913         Adjust for new behaviour on Windows.
1914
1915 2021-09-23  Jonathan Wakely  <jwakely@redhat.com>
1916
1917         * src/c++11/system_error.cc (generic_error_category): Define
1918         class and virtual functions as 'final'.
1919         (generic_error_category::equivalent(int, const error_condition&)):
1920         Override.
1921         (system_error_category): Define class and virtual functions as
1922         'final'.
1923         (system_error_category::equivalent(int, const error_condition&)):
1924         Override.
1925         (generic_category_instance, system_category_instance): Use
1926         constinit union to make the objects immortal.
1927
1928 2021-09-23  Jonathan Wakely  <jwakely@redhat.com>
1929
1930         PR libstdc++/102425
1931         * src/c++11/system_error.cc
1932         (system_error_category::default_error_condition): Add 0 to
1933         switch.
1934         * testsuite/19_diagnostics/error_category/102425.cc: New test.
1935
1936 2021-09-17  Jonathan Wakely  <jwakely@redhat.com>
1937
1938         * include/bits/fs_path.h (path::iterator): Add noexcept to all
1939         member functions and friend functions.
1940         (distance): Add noexcept.
1941         (advance): Add noexcept and inline.
1942         * include/experimental/bits/fs_path.h (path::iterator):
1943         Add noexcept to all member functions.
1944
1945 2021-09-17  Jonathan Wakely  <jwakely@redhat.com>
1946
1947         PR libstdc++/102270
1948         * include/std/tuple (_Tuple_impl): Add constexpr to constructor
1949         missed in previous patch.
1950         * testsuite/20_util/tuple/cons/102270.C: Moved to...
1951         * testsuite/20_util/tuple/cons/102270.cc: ...here.
1952         * testsuite/util/testsuite_allocator.h (SimpleAllocator): Add
1953         constexpr to constructor so it can be used for C++20 tests.
1954
1955 2021-09-17  Jonathan Wakely  <jwakely@redhat.com>
1956
1957         * testsuite/26_numerics/valarray/dr630-3.C: Moved to...
1958         * testsuite/26_numerics/valarray/dr630-3.cc: ...here.
1959         * testsuite/27_io/basic_iostream/cons/16251.C: Moved to...
1960         * testsuite/27_io/basic_iostream/cons/16251.cc: ...here.
1961
1962 2021-09-16  Jonathan Wakely  <jwakely@redhat.com>
1963
1964         * src/Makefile.am (stamp-debug): Add all Makefiles as
1965         prerequisites.
1966         * src/Makefile.in: Regenerate.
1967
1968 2021-09-16  Jonathan Wakely  <jwakely@redhat.com>
1969
1970         * testsuite/ext/pb_ds/regression/tree_map_rand.cc: Increase
1971         timeout factor to 3.
1972         * testsuite/ext/pb_ds/regression/tree_set_rand.cc: Likewise.
1973
1974 2021-09-16  Jonathan Wakely  <jwakely@redhat.com>
1975
1976         * doc/xml/manual/using.xml: Generalize to apply to more than
1977         just -std=c++11.
1978         * doc/html/manual/using_macros.html: Regenerate.
1979
1980 2021-09-16  Jonathan Wakely  <jwakely@redhat.com>
1981
1982         * include/std/optional (nullptr_t): Make constructor noexcept.
1983
1984 2021-09-16  Jonathan Wakely  <jwakely@redhat.com>
1985
1986         * include/bits/fs_path.h (advance): Remove non-deducible
1987         template parameter.
1988
1989 2021-09-16  Jonathan Wakely  <jwakely@redhat.com>
1990
1991         PR libstdc++/102270
1992         * include/std/tuple (_Head_base, _Tuple_impl): Add
1993         _GLIBCXX20_CONSTEXPR to allocator-extended constructors.
1994         (tuple<>::swap(tuple&)): Add _GLIBCXX20_CONSTEXPR.
1995         * testsuite/20_util/tuple/cons/102270.C: New test.
1996
1997 2021-09-16  Jonathan Wakely  <jwakely@redhat.com>
1998
1999         PR libstdc++/102280
2000         * include/std/span (span(Range&&)): Add constraint to deduction
2001         guide.
2002
2003 2021-09-16  Jonathan Wakely  <jwakely@redhat.com>
2004
2005         * src/c++98/Makefile.am: Use CXXCOMPILE not LTCXXCOMPILE.
2006         * src/c++98/Makefile.in: Regenerate.
2007
2008 2021-09-16  Jonathan Wakely  <jwakely@redhat.com>
2009
2010         * include/bits/basic_string.h [_GLIBCXX_USE_CXX11_ABI]
2011         (to_string): Add noexcept if the type width is 32 bits or less.
2012
2013 2021-09-16  Jonathan Wakely  <jwakely@redhat.com>
2014
2015         * include/bits/unique_ptr.h (__uniq_ptr_impl::_M_ptr)
2016         (__uniq_ptr_impl::_M_deleter): Add noexcept.
2017
2018 2021-09-16  Thomas Rodgers  <rodgert@twrodgers.com>
2019
2020         PR libstdc++/101761
2021         * testsuite/29_atomics/atomic_ref/wait_notify.cc (test): Use
2022         va and vb as arguments to wait/notify, remove unused bb local.
2023
2024 2021-09-15  Hugo Beauzée-Luyssen  <hugo@beauzee.fr>
2025
2026         * crossconfig.m4: Check for TLS support on mingw.
2027         * configure: Regenerate.
2028
2029 2021-09-13  Jason Merrill  <jason@redhat.com>
2030
2031         * include/std/version: Define __cpp_lib_hardware_interference_size.
2032         * libsupc++/new: Define hardware interference size variables.
2033
2034 2021-09-10  Jonathan Wakely  <jwakely@redhat.com>
2035
2036         * testsuite/experimental/net/internet/resolver/ops/lookup.cc:
2037         Fix invalid hostname to only match the .invalid TLD.
2038
2039 2021-09-02  Jonathan Wakely  <jwakely@redhat.com>
2040
2041         * include/bits/atomic_base.h (__atomic_base<P*>::compare_exchange_weak):
2042         Add new functions.
2043         * include/std/atomic (atomic<T*>::compare_exchange_weak): Use
2044         it.
2045
2046 2021-09-02  Jonathan Wakely  <jwakely@redhat.com>
2047
2048         * include/std/atomic: Tweak whitespace.
2049
2050 2021-09-02  Jonathan Wakely  <jwakely@redhat.com>
2051
2052         PR c++/102177
2053         * include/bits/atomic_base.h (__is_valid_cmpexch_failure_order):
2054         New function to check if a memory order is valid for the failure
2055         case of compare exchange operations.
2056         (__atomic_base<I>::compare_exchange_weak): Simplify assertions
2057         by using __is_valid_cmpexch_failure_order.
2058         (__atomic_base<I>::compare_exchange_strong): Likewise.
2059         (__atomic_base<P*>::compare_exchange_weak): Likewise.
2060         (__atomic_base<P*>::compare_exchange_strong): Likewise.
2061         (__atomic_impl::compare_exchange_weak): Add assertion.
2062         (__atomic_impl::compare_exchange_strong): Likewise.
2063         * include/std/atomic (atomic::compare_exchange_weak): Likewise.
2064         (atomic::compare_exchange_strong): Likewise.
2065
2066 2021-09-02  Jonathan Wakely  <jwakely@redhat.com>
2067
2068         * include/std/functional (invoke_r): Define.
2069         * include/std/version (__cpp_lib_invoke_r): Define.
2070         * testsuite/20_util/function_objects/invoke/version.cc: Check
2071         for __cpp_lib_invoke_r as well as __cpp_lib_invoke.
2072         * testsuite/20_util/function_objects/invoke/4.cc: New test.
2073
2074 2021-08-31  Jonathan Wakely  <jwakely@redhat.com>
2075
2076         PR libstdc++/98421
2077         * include/std/span (span(Iter, size_type), span(Iter, Iter)):
2078         Add valid range checks.
2079         * testsuite/23_containers/span/cons_1_assert_neg.cc: New test.
2080         * testsuite/23_containers/span/cons_2_assert_neg.cc: New test.
2081
2082 2021-08-31  Jonathan Wakely  <jwakely@redhat.com>
2083
2084         * configure.ac: Fix checks for F_GETFL, F_SETFL and O_NONBLOCK.
2085         * configure: Regenerate.
2086
2087 2021-08-31  Jonathan Wakely  <jwakely@redhat.com>
2088
2089         * src/c++11/system_error.cc (error_category::~error_category()):
2090         Remove noexcept-specifier.
2091         (system_error::~system_error()): Likewise.
2092         * testsuite/19_diagnostics/error_category/noexcept.cc: New test.
2093         * testsuite/19_diagnostics/system_error/noexcept.cc: New test.
2094
2095 2021-08-31  Jonathan Wakely  <jwakely@redhat.com>
2096
2097         PR libstdc++/102074
2098         * include/bits/atomic_timed_wait.h (__timed_waiter_pool)
2099         [!_GLIBCXX_HAVE_PLATFORM_TIMED_WAIT]: Add missing return.
2100
2101 2021-08-31  Jonathan Wakely  <jwakely@redhat.com>
2102
2103         * include/experimental/internet (__make_resolver_error_code):
2104         Handle EAI_SYSTEM errors.
2105         (basic_resolver_results): Use __make_resolver_error_code. Use
2106         Glibc NI_MAXHOST and NI_MAXSERV values for buffer sizes.
2107
2108 2021-08-31  Jonathan Wakely  <jwakely@redhat.com>
2109
2110         * testsuite/experimental/net/internet/resolver/ops/lookup.cc:
2111         Try other service if "http" fails.
2112
2113 2021-08-31  Jonathan Wakely  <jwakely@redhat.com>
2114
2115         * testsuite/17_intro/names.cc: Undefine some more names used
2116         by Solaris system headers.
2117
2118 2021-08-30  Jason Merrill  <jason@redhat.com>
2119
2120         PR c++/96286
2121         * testsuite/30_threads/promise/requirements/lwg3466.cc:
2122         Remove dg-prune-outputs.
2123
2124 2021-08-28  Jonathan Wakely  <jwakely@redhat.com>
2125
2126         * include/bits/alloc_traits.h (allocator_traits): Add explicit
2127         specialization for allocator<void>. Improve doxygen comments.
2128         * include/bits/allocator.h (allocator<void>): Restore for the
2129         versioned namespace.
2130         (allocator<void>::construct, allocator<void>::destroy): Remove.
2131         * include/ext/extptr_allocator.h (_Extptr_allocator<void>):
2132         Add default constructor and converting constructor.
2133
2134 2021-08-28  Jonathan Wakely  <jwakely@redhat.com>
2135
2136         * include/bits/stl_uninitialized.h: Fix typo in comment.
2137
2138 2021-08-28  Jonathan Wakely  <jwakely@redhat.com>
2139
2140         PR libstdc++/99876
2141         * src/c++17/fs_ops.cc (fs::absolute): Call non-throwing form,
2142         to avoid unnecessary current_path() call.
2143
2144 2021-08-28  Jonathan Wakely  <jwakely@redhat.com>
2145
2146         * include/bits/std_function.h (function::function(F&&)): Give
2147         name to defaulted template parameter, to improve diagnostics.
2148         Use markdown for more doxygen comments.
2149
2150 2021-08-26  Jonathan Wakely  <jwakely@redhat.com>
2151
2152         * include/bits/std_function.h (function): Adjust doxygen
2153         comments.
2154         * include/bits/unique_ptr.h (make_unique_for_overwrite):
2155         Change parameter name to match doxygen comment.
2156
2157 2021-08-26  Jonathan Wakely  <jwakely@redhat.com>
2158
2159         * include/bits/std_function.h (_function_base::_Base_manager):
2160         Replace _M_init_functor with a function template using a
2161         forwarding reference, and a pair of _M_create function
2162         templates. Reuse _M_create for the clone operation.
2163         (function::_Decay_t): New alias template.
2164         (function::_Callable): Simplify by using _Decay.
2165         (function::function(F)): Change parameter to forwarding
2166         reference, as per LWG 2447. Add noexcept-specifier. Simplify
2167         constraints.
2168         (function::operator=(F&&)): Add noexcept-specifier.
2169         * testsuite/20_util/function/cons/lwg2774.cc: New test.
2170         * testsuite/20_util/function/cons/noexcept.cc: New test.
2171
2172 2021-08-26  Jonathan Wakely  <jwakely@redhat.com>
2173
2174         * include/bits/std_function.h (function::function(F)): Add
2175         static assertions to check constructibility requirements.
2176
2177 2021-08-26  Jonathan Wakely  <jwakely@redhat.com>
2178
2179         PR libstdc++/100285
2180         * configure.ac: Check for O_NONBLOCK.
2181         * configure: Regenerate.
2182         * include/experimental/internet: Include <ws2tcpip.h> for
2183         Windows.  Use preprocessor conditions around more constants.
2184         * include/experimental/socket: Use preprocessor conditions
2185         around more constants.
2186         * testsuite/experimental/net/internet/resolver/base.cc: Only use
2187         constants when the corresponding C macro is defined.
2188         * testsuite/experimental/net/socket/basic_socket.cc: Likewise.
2189         * testsuite/experimental/net/socket/socket_base.cc: Likewise.
2190         Make preprocessor checks more fine-grained.
2191
2192 2021-08-25  Jonathan Wakely  <jwakely@redhat.com>
2193
2194         * testsuite/17_intro/names.cc: Check 'sz'.
2195
2196 2021-08-25  Jonathan Wakely  <jwakely@redhat.com>
2197
2198         * testsuite/17_intro/names.cc: Adjust for Windows.
2199
2200 2021-08-25  Jonathan Wakely  <jwakely@redhat.com>
2201
2202         * include/std/valarray: Uglify 'func' parameters.
2203         * testsuite/17_intro/names.cc: Add 'func' to checks.
2204
2205 2021-08-25  Jonathan Wakely  <jwakely@redhat.com>
2206
2207         PR libstdc++/102064
2208         * include/bits/stl_uninitialized.h (_GLIBCXX_USE_ASSIGN_FOR_INIT):
2209         Define macro to check conditions for optimizing trivial cases.
2210         (__check_constructible): New function to do static assert.
2211         (uninitialized_copy, uninitialized_fill, uninitialized_fill_n):
2212         Use new macro.
2213         * testsuite/20_util/specialized_algorithms/uninitialized_copy/1.cc:
2214         Adjust dg-error pattern.
2215         * testsuite/23_containers/vector/cons/89164.cc: Likewise. Add
2216         C++17-specific checks from 89164_c++17.cc.
2217         * testsuite/23_containers/vector/cons/89164_c++17.cc: Removed.
2218         * testsuite/20_util/specialized_algorithms/uninitialized_copy/102064.cc:
2219         New test.
2220         * testsuite/20_util/specialized_algorithms/uninitialized_copy_n/102064.cc:
2221         New test.
2222         * testsuite/20_util/specialized_algorithms/uninitialized_fill/102064.cc:
2223         New test.
2224         * testsuite/20_util/specialized_algorithms/uninitialized_fill_n/102064.cc:
2225         New test.
2226
2227 2021-08-25  Jonathan Wakely  <jwakely@redhat.com>
2228
2229         PR libstdc++/102048
2230         * include/ext/rope (rope::erase(size_type)): Remove broken
2231         function.
2232
2233 2021-08-24  Jonathan Wakely  <jwakely@redhat.com>
2234
2235         * doc/xml/manual/status_cxx2020.xml: Update table.
2236         * doc/html/manual/status.html: Regenerate.
2237
2238 2021-08-24  Jonathan Wakely  <jwakely@redhat.com>
2239
2240         * include/std/type_traits (is_layout_compatible): Define.
2241         (is_corresponding_member): Define.
2242         * include/std/version (__cpp_lib_is_layout_compatible): Define.
2243         * testsuite/20_util/is_layout_compatible/is_corresponding_member.cc:
2244         New test.
2245         * testsuite/20_util/is_layout_compatible/value.cc: New test.
2246         * testsuite/20_util/is_layout_compatible/version.cc: New test.
2247         * testsuite/20_util/is_pointer_interconvertible/with_class.cc:
2248         New test.
2249         * testsuite/23_containers/span/layout_compat.cc: Do not use real
2250         std::is_layout_compatible trait if available.
2251
2252 2021-08-24  Jonathan Wakely  <jwakely@redhat.com>
2253
2254         * src/c++11/cxx11-shim_facets.cc: Fix mismatched class-key in
2255         explicit instantiation definitions.
2256
2257 2021-08-23  Jonathan Wakely  <jwakely@redhat.com>
2258
2259         * include/std/ranges (basic_istream_view): Add default template
2260         argument.
2261         * testsuite/std/ranges/istream_view.cc: Check it.
2262
2263 2021-08-23  Jonathan Wakely  <jwakely@redhat.com>
2264
2265         * libsupc++/dyncast.cc (__dynamic_cast): Add __builtin_expect to
2266         precondition check.
2267
2268 2021-08-23  Jonathan Wakely  <jwakely@redhat.com>
2269
2270         PR libstdc++/90787
2271         * testsuite/util/testsuite_fs.h (permissions_are_testable):
2272         Define as inline.
2273
2274 2021-08-20  Jonathan Wakely  <jwakely@redhat.com>
2275
2276         PR libstdc++/90787
2277         * testsuite/27_io/filesystem/iterators/directory_iterator.cc:
2278         Use new __gnu_test::permissions_are_testable() function.
2279         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
2280         Likewise.
2281         * testsuite/27_io/filesystem/operations/exists.cc: Likewise.
2282         * testsuite/27_io/filesystem/operations/is_empty.cc: Likewise.
2283         * testsuite/27_io/filesystem/operations/remove.cc: Likewise.
2284         * testsuite/27_io/filesystem/operations/remove_all.cc: Likewise.
2285         * testsuite/27_io/filesystem/operations/status.cc: Likewise.
2286         * testsuite/27_io/filesystem/operations/symlink_status.cc:
2287         Likewise.
2288         * testsuite/27_io/filesystem/operations/temp_directory_path.cc:
2289         Likewise.
2290         * testsuite/experimental/filesystem/iterators/directory_iterator.cc:
2291         Likewise.
2292         * testsuite/experimental/filesystem/iterators/recursive_directory_iterator.cc:
2293         Likewise.
2294         * testsuite/experimental/filesystem/operations/exists.cc:
2295         Likewise.
2296         * testsuite/experimental/filesystem/operations/is_empty.cc:
2297         Likewise.
2298         * testsuite/experimental/filesystem/operations/remove.cc:
2299         Likewise.
2300         * testsuite/experimental/filesystem/operations/remove_all.cc:
2301         Likewise.
2302         * testsuite/experimental/filesystem/operations/temp_directory_path.cc:
2303         Likewise.
2304         * testsuite/util/testsuite_fs.h (__gnu_test::permissions_are_testable):
2305         New function to guess whether testing permissions will work.
2306
2307 2021-08-19  Jonathan Wakely  <jwakely@redhat.com>
2308
2309         * doc/xml/manual/status_cxx2020.xml: Move row  earlier in table.
2310         * doc/html/manual/status.html: Regenerate.
2311
2312 2021-08-19  Jonathan Wakely  <jwakely@redhat.com>
2313
2314         * doc/doxygen/user.cfg.in: Update to Doxygen 1.9.2
2315
2316 2021-08-19  Jonathan Wakely  <jwakely@redhat.com>
2317
2318         PR libstdc++/101965
2319         * include/std/charconv (__to_chars_i): Remove redundant check.
2320
2321 2021-08-19  Jonathan Wakely  <jwakely@redhat.com>
2322
2323         PR libstdc++/101960
2324         * include/std/tuple (_Tuple_impl(_Tuple_impl&&)): Use base
2325         class' move constructor. Define as defaulted for versioned
2326         namespace.
2327         * testsuite/20_util/tuple/cons/101960.cc: New test.
2328
2329 2021-08-19  Jonathan Wakely  <jwakely@redhat.com>
2330
2331         PR libstdc++/100139
2332         * doc/xml/manual/status_cxx2020.xml: Add P1739R4 to status table.
2333         * doc/html/manual/status.html: Regenerate.
2334
2335 2021-08-19  Jonathan Wakely  <jwakely@redhat.com>
2336
2337         * include/bits/shared_ptr.h: Add @since and @headerfile tags.
2338         * include/bits/unique_ptr.h: Add @headerfile tags.
2339
2340 2021-08-19  Jonathan Wakely  <jwakely@redhat.com>
2341
2342         * src/filesystem/ops-common.h (filesystem::file_time): Improve
2343         overflow check by using system_clock::duration::max().
2344
2345 2021-08-19  Jonathan Wakely  <jwakely@redhat.com>
2346
2347         * include/bits/stl_tree.h: Tweak whitespace.
2348
2349 2021-08-18  Jonathan Wakely  <jwakely@redhat.com>
2350
2351         * include/bits/unique_ptr.h (default_delete): Add @since tag.
2352         (unique_ptr, unique_ptr<T[]>): Likewise. Improve @brief.
2353         (make_unique, make_unique_for_overwrite): Likewise. Add @tparam,
2354         @param, and @returns.
2355         (_MakeUniq): Move to __detail namespace. Add alias template
2356         helpers.
2357
2358 2021-08-18  Jonathan Wakely  <jwakely@redhat.com>
2359
2360         * include/bits/stl_function.h: Improve doxygen comments.
2361
2362 2021-08-18  Jonathan Wakely  <jwakely@redhat.com>
2363
2364         * doc/doxygen/user.cfg.in (PREDEFINED): Enable doxygen
2365         processing for C++20 components and components that depend on
2366         compiler features.
2367         * include/bits/stl_algo.h (random_shuffle): Use @deprecated.
2368         * include/std/type_traits: Improve doxygen comments for C++20
2369         traits.
2370
2371 2021-08-18  Jonathan Wakely  <jwakely@redhat.com>
2372
2373         * include/ext/type_traits.h (__promote_2, __promote_3)
2374         (__promote_4): Redfine as alias templates using __promoted_t.
2375         * include/std/complex (__promote_2): Remove partial
2376         specializations for std::complex.
2377
2378 2021-08-18  Jonathan Wakely  <jwakely@redhat.com>
2379
2380         * include/bits/stl_algo.h (min(initializer_list<T>))
2381         (min(initializer_list<T>, Compare)): Call __min_element directly to
2382         avoid redundant debug checks for valid ranges.
2383         (max(initializer_list<T>), max(initializer_list<T>, Compare)):
2384         Likewise, for __max_element.
2385         (minmax(initializer_list<T>), minmax(initializer_list<T>, Compare)):
2386         Likewise, for __minmax_element.
2387
2388 2021-08-18  Jonathan Wakely  <jwakely@redhat.com>
2389
2390         * include/debug/deque (deque(size_type, const T&, const A&)):
2391         Prevent class template argument deduction and replace with a
2392         deduction guide.
2393         * include/debug/forward_list (forward_list(size_type, const T&, const A&)):
2394         Likewise.
2395         * include/debug/list (list(size_type, const T&, const A&)):
2396         Likewise.
2397         * include/debug/vector (vector(size_type, const T&, const A&)):
2398         Likewise.
2399
2400 2021-08-18  Jonathan Wakely  <jwakely@redhat.com>
2401
2402         * python/libstdcxx/v6/printers.py (StdBitReferencePrinter): Use
2403         'std::vector<bool>::reference' as type name, not _Bit_reference.
2404         (build_libstdcxx_dictionary): Register printers for vector<bool>
2405         types in debug mode too.
2406         * testsuite/libstdc++-prettyprinters/simple.cc: Adjust expected
2407         output for invalid _Bit_reference. Use vector<bool>::reference
2408         instead of _Bit_reference.
2409         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
2410
2411 2021-08-17  Thomas Schwinge  <thomas@codesourcery.com>
2412
2413         * testsuite/lib/libstdc++.exp: Avoid illegal argument to verbose,
2414         continued.
2415
2416 2021-08-17  Luc Michel  <lmichel@kalray.eu>
2417             Marc Poulhies  <mpoulhies@kalrayinc.com>
2418
2419         * testsuite/lib/gdb-test.exp (gdb_version_check)
2420         (gdb_version_check_xmethods): Only check the GDB version for
2421         local native targets.
2422
2423 2021-08-17  Antony Polukhin  <antoshkka@gmail.com>
2424             Jonathan Wakely  <jwakely@redhat.com>
2425
2426         * include/bits/random.tcc (seed_seq::seed_seq): Reserve capacity
2427         if distance is O(1).
2428         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
2429         line number.
2430
2431 2021-08-17  Jonathan Wakely  <jwakely@redhat.com>
2432
2433         * testsuite/26_numerics/random/seed_seq/cons/range.cc: Check
2434         construction from input iterators.
2435
2436 2021-08-17  Jonathan Wakely  <jwakely@redhat.com>
2437
2438         * python/libstdcxx/v6/printers.py (StdErrorCatPrinter): Remove.
2439
2440 2021-08-17  Jonathan Wakely  <jwakely@redhat.com>
2441
2442         PR libstdc++/101923
2443         * include/bits/std_function.h (function(function&&)): Check for
2444         non-empty parameter before doing any work.
2445
2446 2021-08-17  Jonathan Wakely  <jwakely@redhat.com>
2447
2448         * include/bits/cow_string.h (basic_string::contains): Do not
2449         define for -std=gnu++20.
2450
2451 2021-08-17  Jonathan Wakely  <jwakely@redhat.com>
2452
2453         * include/bits/ranges_util.h (__not_same_as): Rename to
2454         __different_from.
2455         * include/std/ranges (__not_same_as): Likewise.
2456
2457 2021-08-17  Jonathan Wakely  <jwakely@redhat.com>
2458
2459         * include/std/utility (exchange): Add noexcept-specifier.
2460         * testsuite/20_util/exchange/noexcept.cc: New test.
2461
2462 2021-08-17  Jonathan Wakely  <jwakely@redhat.com>
2463
2464         * python/libstdcxx/v6/printers.py (StdErrorCodePrinter): Define.
2465         (build_libstdcxx_dictionary): Register printer for
2466         std::error_code and std::error_condition.
2467         * testsuite/libstdc++-prettyprinters/cxx11.cc: Test it.
2468
2469 2021-08-16  Jonathan Wakely  <jwakely@redhat.com>
2470
2471         PR libstdc++/101937
2472         * src/c++11/debug.cc (PrintContext::_M_indent): Replace with a
2473         static data member.
2474         (print_word): Use qualified-id to access it.
2475
2476 2021-08-16  Jonathan Wakely  <jwakely@redhat.com>
2477
2478         * python/Makefile.am [GLIBCXX_BUILD_DEBUG] (install-data-local):
2479         Install another copy of the GDB hook.
2480         * python/Makefile.in: Regenerate.
2481
2482 2021-08-12  Jonathan Wakely  <jwakely@redhat.com>
2483
2484         PR libstdc++/101870
2485         * include/c_global/cmath (hypot): Use __promoted_t.
2486         (lerp): Add new overload accepting any arithmetic types.
2487         * include/ext/type_traits.h (__promoted_t): New alias template.
2488         * testsuite/26_numerics/lerp.cc: Moved to...
2489         * testsuite/26_numerics/lerp/1.cc: ...here.
2490         * testsuite/26_numerics/lerp/constexpr.cc: New test.
2491         * testsuite/26_numerics/lerp/version.cc: New test.
2492
2493 2021-08-12  Jonathan Wakely  <jwakely@redhat.com>
2494
2495         * testsuite/26_numerics/lerp.cc: Add header name to #error.
2496         * testsuite/26_numerics/midpoint/integral.cc: Likewise.
2497         * testsuite/26_numerics/midpoint/version.cc: New test.
2498
2499 2021-08-12  Jonathan Wakely  <jwakely@redhat.com>
2500
2501         * include/experimental/random (experimental::randint): Add
2502         nodiscard attribute.
2503
2504 2021-08-12  Jonathan Wakely  <jwakely@redhat.com>
2505
2506         * src/c++98/locale_init.cc: Require C++11.
2507         * src/c++98/localename.cc: Likewise.
2508         * src/c++98/misc-inst.cc: Require C++98.
2509
2510 2021-08-11  Jonathan Wakely  <jwakely@redhat.com>
2511
2512         PR libstdc++/101866
2513         * testsuite/experimental/random/randint.cc: Loop and retry if
2514         reseed() produces the same sequence.
2515
2516 2021-08-11  Jonathan Wakely  <jwakely@redhat.com>
2517
2518         * include/std/type_traits (__cpp_lib_is_pointer_interconvertible)
2519         (is_pointer_interconvertible_base_of_v)
2520         (is_pointer_interconvertible_base_of): Define for C++20.
2521         * include/std/version (__cpp_lib_is_pointer_interconvertible):
2522         Define.
2523         * testsuite/23_containers/span/layout_compat.cc: Use correct
2524         feature test macro for std::is_layout_compatible_v.
2525         * testsuite/20_util/is_pointer_interconvertible/value.cc: New test.
2526         * testsuite/20_util/is_pointer_interconvertible/version.cc: New test.
2527
2528 2021-08-09  Jonathan Wakely  <jwakely@redhat.com>
2529
2530         * include/bits/regex.h (basic_regex::transform_primary): Use
2531         _GLIBCXX_STD_C::vector for local variable.
2532         * include/bits/regex.tcc (__regex_algo_impl): Use reference to
2533         _GLIBCXX_STD_C::vector base class of match_results.
2534         * include/bits/regex_automaton.tcc (_StateSeq:_M_clone): Use
2535         _GLIBCXX_STD_C::map and _GLIBCXX_STD_C::deque for local
2536         variables.
2537         * include/bits/regex_compiler.h (_BracketMatcher): Use
2538         _GLIBCXX_STD_C::vector for data members.
2539         * include/bits/regex_executor.h (_Executor): Likewise.
2540         * include/std/regex [_GLIBCXX_DEBUG]: Include <debug/vector>.
2541
2542 2021-08-09  François Dumont  <fdumont@gcc.gnu.org>
2543
2544         * include/debug/safe_container.h
2545         (_Safe_container(_Safe_container&&, const _Alloc&, std::true_type)): New.
2546         (_Safe_container(_Safe_container&&, const _Alloc&, std::false_type)): New.
2547         (_Safe_container(_Safe_container&&, const _Alloc&)): Use latters.
2548
2549 2021-08-09  Jonathan Wakely  <jwakely@redhat.com>
2550
2551         * testsuite/23_containers/unordered_map/cons/default.cc: Add
2552         equality comparison operators to allocator.
2553         * testsuite/23_containers/unordered_set/cons/default.cc:
2554         Likewise.
2555
2556 2021-08-08  François Dumont  <fdumont@gcc.gnu.org>
2557
2558         * testsuite/25_algorithms/copy/debug/constexpr_neg.cc: Replace 'failed_assertion'
2559         dg-prune-output reason with 'builtin_unreachable'.
2560         * testsuite/25_algorithms/copy_backward/debug/constexpr_neg.cc: Likewise.
2561         * testsuite/25_algorithms/equal/debug/constexpr_neg.cc: Likewise.
2562         * testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_neg.cc: Likewise.
2563         * testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_pred_neg.cc: Likewise.
2564         * testsuite/25_algorithms/lower_bound/debug/constexpr_valid_range_neg.cc: Likewise.
2565         * testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_neg.cc: Likewise.
2566         * testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_pred_neg.cc: Likewise.
2567         * testsuite/25_algorithms/upper_bound/debug/constexpr_valid_range_neg.cc: Likewise.
2568
2569 2021-08-08  Hans-Peter Nilsson  <hp@bitrange.com>
2570
2571         * testsuite/std/ranges/iota/max_size_type.cc: Set
2572         dg-timeout-factor to 4.
2573
2574 2021-08-06  Jonathan Wakely  <jwakely@redhat.com>
2575
2576         * libsupc++/compare (compare_three_way, strong_order)
2577         (weak_order, partial_order, compare_strong_order_fallback)
2578         (compare_weak_order_fallback, compare_partial_order_fallback):
2579         Move nodiscard attributes to correct location.
2580
2581 2021-08-05  Jonathan Wakely  <jwakely@redhat.com>
2582
2583         PR libstdc++/101782
2584         * include/bits/ranges_base.h (ranges::begin, ranges::end)
2585         (ranges::rbegin, ranges::rend, ranges::size, ranges::ssize)
2586         (ranges::empty, ranges::data): Move attribute after the
2587         declarator-id instead of at the end of the declarator.
2588         * include/bits/stl_iterator.h (__gnu_cxx::__normal_iterator):
2589         Move attributes back to the start of the function declarator,
2590         but move the requires-clause to the end.
2591         (common_iterator): Move attribute after the declarator-id.
2592         * include/bits/stl_queue.h (queue): Remove ill-formed attributes
2593         from friend declaration that are not definitions.
2594         * include/std/ranges (views::all, views::filter)
2595         (views::transform, views::take, views::take_while,
2596         views::drop) (views::drop_while, views::join,
2597         views::lazy_split) (views::split, views::counted,
2598         views::common, views::reverse) (views::elements): Move
2599         attributes after the declarator-id.
2600
2601 2021-08-05  Jonathan Wakely  <jwakely@redhat.com>
2602
2603         * libsupc++/compare (partial_ordering, weak_ordering)
2604         (strong_ordering, is_eq, is_neq, is_lt, is_lteq, is_gt, is_gteq)
2605         (compare_three_way, strong_order, weak_order, partial_order)
2606         (compare_strong_order_fallback, compare_weak_order_fallback)
2607         (compare_partial_order_fallback, __detail::__synth3way): Add
2608         nodiscard attribute.
2609         * testsuite/18_support/comparisons/categories/zero_neg.cc: Add
2610         -Wno-unused-result to options.
2611
2612 2021-08-05  Jonathan Wakely  <jwakely@redhat.com>
2613
2614         PR libstdc++/101782
2615         * include/bits/ranges_base.h (ranges::begin, ranges::end)
2616         (ranges::rbegin, ranges::rend, ranges::size, ranges::ssize)
2617         (ranges::empty, ranges::data): Move attribute to the end of
2618         the declarator.
2619         * include/bits/stl_iterator.h (__gnu_cxx::__normal_iterator)
2620         (common_iterator): Likewise for non-member operator functions.
2621         * include/std/ranges (views::all, views::filter)
2622         (views::transform, views::take, views::take_while, views::drop)
2623         (views::drop_while, views::join, views::lazy_split)
2624         (views::split, views::counted, views::common, views::reverse)
2625         (views::elements): Likewise.
2626         * testsuite/std/ranges/access/101782.cc: New test.
2627
2628 2021-08-04  Jonathan Wakely  <jwakely@redhat.com>
2629
2630         * include/bits/forward_list.h: Add [[nodiscard]] to functions
2631         with no side-effects.
2632         * include/bits/stl_bvector.h: Likewise.
2633         * include/bits/stl_deque.h: Likewise.
2634         * include/bits/stl_list.h: Likewise.
2635         * include/bits/stl_queue.h: Likewise.
2636         * include/bits/stl_stack.h: Likewise.
2637         * include/bits/stl_vector.h: Likewise.
2638         * include/debug/deque: Likewise.
2639         * include/debug/forward_list: Likewise.
2640         * include/debug/list: Likewise.
2641         * include/debug/safe_iterator.h: Likewise.
2642         * include/debug/vector: Likewise.
2643         * include/std/array: Likewise.
2644         * testsuite/23_containers/array/creation/3_neg.cc: Use
2645         -Wno-unused-result.
2646         * testsuite/23_containers/array/debug/back1_neg.cc: Cast result
2647         to void.
2648         * testsuite/23_containers/array/debug/back2_neg.cc: Likewise.
2649         * testsuite/23_containers/array/debug/front1_neg.cc: Likewise.
2650         * testsuite/23_containers/array/debug/front2_neg.cc: Likewise.
2651         * testsuite/23_containers/array/debug/square_brackets_operator1_neg.cc:
2652         Likewise.
2653         * testsuite/23_containers/array/debug/square_brackets_operator2_neg.cc:
2654         Likewise.
2655         * testsuite/23_containers/array/tuple_interface/get_neg.cc:
2656         Adjust dg-error line numbers.
2657         * testsuite/23_containers/deque/cons/clear_allocator.cc: Cast
2658         result to void.
2659         * testsuite/23_containers/deque/debug/invalidation/4.cc:
2660         Likewise.
2661         * testsuite/23_containers/deque/types/1.cc: Use
2662         -Wno-unused-result.
2663         * testsuite/23_containers/list/types/1.cc: Cast result to void.
2664         * testsuite/23_containers/priority_queue/members/7161.cc:
2665         Likewise.
2666         * testsuite/23_containers/queue/members/7157.cc: Likewise.
2667         * testsuite/23_containers/vector/59829.cc: Likewise.
2668         * testsuite/23_containers/vector/ext_pointer/types/1.cc:
2669         Likewise.
2670         * testsuite/23_containers/vector/ext_pointer/types/2.cc:
2671         Likewise.
2672         * testsuite/23_containers/vector/types/1.cc: Use
2673         -Wno-unused-result.
2674
2675 2021-08-04  Jonathan Wakely  <jwakely@redhat.com>
2676
2677         * include/bits/iterator_concepts.h (iter_move): Add
2678         [[nodiscard]].
2679         * include/bits/range_access.h (begin, end, cbegin, cend)
2680         (rbegin, rend, crbegin, crend, size, data, ssize): Likewise.
2681         * include/bits/ranges_base.h (ranges::begin, ranges::end)
2682         (ranges::cbegin, ranges::cend, ranges::rbegin, ranges::rend)
2683         (ranges::crbegin, ranges::crend, ranges::size, ranges::ssize)
2684         (ranges::empty, ranges::data, ranges::cdata): Likewise.
2685         * include/bits/stl_iterator.h (reverse_iterator, __normal_iterator)
2686         (back_insert_iterator, front_insert_iterator, insert_iterator)
2687         (move_iterator, move_sentinel, common_iterator)
2688         (counted_iterator): Likewise.
2689         * include/bits/stl_iterator_base_funcs.h (distance, next, prev):
2690         Likewise.
2691         * include/bits/stream_iterator.h (istream_iterator)
2692         (ostream_iterartor): Likewise.
2693         * include/bits/streambuf_iterator.h (istreambuf_iterator)
2694         (ostreambuf_iterator): Likewise.
2695         * include/std/ranges (views::single, views::iota, views::all)
2696         (views::filter, views::transform, views::take, views::take_while)
2697         (views::drop, views::drop_while, views::join, views::lazy_split)
2698         (views::split, views::counted, views::common, views::reverse)
2699         (views::elements): Likewise.
2700         * testsuite/20_util/rel_ops.cc: Use -Wno-unused-result.
2701         * testsuite/24_iterators/move_iterator/greedy_ops.cc: Likewise.
2702         * testsuite/24_iterators/normal_iterator/greedy_ops.cc:
2703         Likewise.
2704         * testsuite/24_iterators/reverse_iterator/2.cc: Likewise.
2705         * testsuite/24_iterators/reverse_iterator/greedy_ops.cc:
2706         Likewise.
2707         * testsuite/21_strings/basic_string/range_access/char/1.cc:
2708         Cast result to void.
2709         * testsuite/21_strings/basic_string/range_access/wchar_t/1.cc:
2710         Likewise.
2711         * testsuite/21_strings/basic_string_view/range_access/char/1.cc:
2712         Likewise.
2713         * testsuite/21_strings/basic_string_view/range_access/wchar_t/1.cc:
2714         Likewise.
2715         * testsuite/23_containers/array/range_access.cc: Likewise.
2716         * testsuite/23_containers/deque/range_access.cc: Likewise.
2717         * testsuite/23_containers/forward_list/range_access.cc:
2718         Likewise.
2719         * testsuite/23_containers/list/range_access.cc: Likewise.
2720         * testsuite/23_containers/map/range_access.cc: Likewise.
2721         * testsuite/23_containers/multimap/range_access.cc: Likewise.
2722         * testsuite/23_containers/multiset/range_access.cc: Likewise.
2723         * testsuite/23_containers/set/range_access.cc: Likewise.
2724         * testsuite/23_containers/unordered_map/range_access.cc:
2725         Likewise.
2726         * testsuite/23_containers/unordered_multimap/range_access.cc:
2727         Likewise.
2728         * testsuite/23_containers/unordered_multiset/range_access.cc:
2729         Likewise.
2730         * testsuite/23_containers/unordered_set/range_access.cc:
2731         Likewise.
2732         * testsuite/23_containers/vector/range_access.cc: Likewise.
2733         * testsuite/24_iterators/customization_points/iter_move.cc:
2734         Likewise.
2735         * testsuite/24_iterators/istream_iterator/sentinel.cc:
2736         Likewise.
2737         * testsuite/24_iterators/istreambuf_iterator/sentinel.cc:
2738         Likewise.
2739         * testsuite/24_iterators/move_iterator/dr2061.cc: Likewise.
2740         * testsuite/24_iterators/operations/prev_neg.cc: Likewise.
2741         * testsuite/24_iterators/ostreambuf_iterator/2.cc: Likewise.
2742         * testsuite/24_iterators/range_access/range_access.cc:
2743         Likewise.
2744         * testsuite/24_iterators/range_operations/100768.cc: Likewise.
2745         * testsuite/26_numerics/valarray/range_access2.cc: Likewise.
2746         * testsuite/28_regex/range_access.cc: Likewise.
2747         * testsuite/experimental/string_view/range_access/char/1.cc:
2748         Likewise.
2749         * testsuite/experimental/string_view/range_access/wchar_t/1.cc:
2750         Likewise.
2751         * testsuite/ext/vstring/range_access.cc: Likewise.
2752         * testsuite/std/ranges/adaptors/take.cc: Likewise.
2753         * testsuite/std/ranges/p2259.cc: Likewise.
2754
2755 2021-08-03  Jonathan Wakely  <jwakely@redhat.com>
2756
2757         * include/bits/random.tcc (linear_congruential_engine): Do not
2758         define static constexpr members when they are implicitly inline.
2759         * include/std/ratio (ratio, __ratio_multiply, __ratio_divide)
2760         (__ratio_add, __ratio_subtract): Likewise.
2761         * include/std/type_traits (integral_constant): Likewise.
2762         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
2763         line number.
2764
2765 2021-08-03  Jonathan Wakely  <jwakely@redhat.com>
2766
2767         * testsuite/util/testsuite_common_types.h: Replace uses of
2768         tr1::unordered_map and tr1::unordered_set with their C++11
2769         equivalents.
2770         * testsuite/29_atomics/atomic/cons/assign_neg.cc: Adjust
2771         dg-error line number.
2772         * testsuite/29_atomics/atomic/cons/copy_neg.cc: Likewise.
2773         * testsuite/29_atomics/atomic_integral/cons/assign_neg.cc:
2774         Likewise.
2775         * testsuite/29_atomics/atomic_integral/cons/copy_neg.cc:
2776         Likewise.
2777         * testsuite/29_atomics/atomic_integral/operators/bitwise_neg.cc:
2778         Likewise.
2779         * testsuite/29_atomics/atomic_integral/operators/decrement_neg.cc:
2780         Likewise.
2781         * testsuite/29_atomics/atomic_integral/operators/increment_neg.cc:
2782         Likewise.
2783
2784 2021-08-03  Jonathan Wakely  <jwakely@redhat.com>
2785
2786         * include/std/memory_resource (polymorphic_allocator::delete_object):
2787         Call destructor directly instead of using destroy.
2788         (allocator_traits<polymorphic_allocator<T>>): Define partial
2789         specialization.
2790
2791 2021-08-03  Jonathan Wakely  <jwakely@redhat.com>
2792
2793         * testsuite/20_util/function_objects/binders/3113.cc: Remove
2794         trailing whitespace.
2795         * testsuite/20_util/shared_ptr/assign/auto_ptr.cc: Likewise.
2796         * testsuite/20_util/shared_ptr/assign/auto_ptr_neg.cc: Likewise.
2797         * testsuite/20_util/shared_ptr/assign/auto_ptr_rvalue.cc:
2798         Likewise.
2799         * testsuite/20_util/shared_ptr/creation/dr925.cc: Likewise.
2800         * testsuite/25_algorithms/headers/algorithm/synopsis.cc:
2801         Likewise.
2802         * testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/2.cc:
2803         Likewise.
2804         * testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/pod.cc:
2805         Likewise.
2806
2807 2021-08-03  Jonathan Wakely  <jwakely@redhat.com>
2808
2809         * doc/xml/manual/evolution.xml: Document deprecation.
2810         * doc/html/*: Regenerate.
2811         * include/bits/c++config (_GLIBCXX14_DEPRECATED): Define.
2812         (_GLIBCXX14_DEPRECATED_SUGGEST): Define.
2813         * include/bits/stl_algo.h (random_shuffle): Deprecate for C++14
2814         and later.
2815         * testsuite/25_algorithms/headers/algorithm/synopsis.cc: Adjust
2816         for C++11 and C++14 changes to std::random_shuffle and
2817         std::shuffle.
2818         * testsuite/25_algorithms/random_shuffle/1.cc: Add options to
2819         use deprecated algorithms.
2820         * testsuite/25_algorithms/random_shuffle/59603.cc: Likewise.
2821         * testsuite/25_algorithms/random_shuffle/moveable.cc: Likewise.
2822         * testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/2.cc:
2823         Likewise.
2824         * testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/pod.cc:
2825         Likewise.
2826
2827 2021-08-03  Jonathan Wakely  <jwakely@redhat.com>
2828
2829         * testsuite/23_containers/forward_list/operations/3.cc:
2830         Use lambda instead of std::bind2nd.
2831         * testsuite/20_util/function_objects/binders/3113.cc: Add
2832         options for testing deprecated features.
2833         * testsuite/20_util/pair/cons/99957.cc: Likewise.
2834         * testsuite/20_util/shared_ptr/assign/auto_ptr.cc: Likewise.
2835         * testsuite/20_util/shared_ptr/assign/auto_ptr_neg.cc: Likewise.
2836         * testsuite/20_util/shared_ptr/assign/auto_ptr_rvalue.cc:
2837         Likewise.
2838         * testsuite/20_util/shared_ptr/cons/43820_neg.cc: Likewise.
2839         * testsuite/20_util/shared_ptr/cons/auto_ptr.cc: Likewise.
2840         * testsuite/20_util/shared_ptr/cons/auto_ptr_neg.cc: Likewise.
2841         * testsuite/20_util/shared_ptr/creation/dr925.cc: Likewise.
2842         * testsuite/20_util/unique_ptr/cons/auto_ptr.cc: Likewise.
2843         * testsuite/20_util/unique_ptr/cons/auto_ptr_neg.cc: Likewise.
2844         * testsuite/ext/pb_ds/example/priority_queue_erase_if.cc:
2845         Likewise.
2846         * testsuite/ext/pb_ds/example/priority_queue_split_join.cc:
2847         Likewise.
2848         * testsuite/lib/dg-options.exp (dg_add_options_using-deprecated):
2849         New proc.
2850
2851 2021-08-03  Jonathan Wakely  <jwakely@redhat.com>
2852
2853         * include/bits/regex_executor.h (_State_info): Replace
2854         unique_ptr<bool[]> with array of bool.
2855         * include/bits/regex_executor.tcc: Likewise.
2856         * include/bits/regex_scanner.tcc: Replace std::strchr with
2857         __builtin_strchr.
2858         * include/std/regex: Replace standard headers with smaller
2859         internal ones.
2860         * testsuite/28_regex/traits/char/lookup_classname.cc: Include
2861         <string.h> for strlen.
2862         * testsuite/28_regex/traits/char/lookup_collatename.cc:
2863         Likewise.
2864
2865 2021-08-03  Jonathan Wakely  <jwakely@redhat.com>
2866
2867         * include/bits/locale_conv.h (__detail::_Scoped_ptr): Define new
2868         RAII class template.
2869         (wstring_convert, wbuffer_convert): Use __detail::_Scoped_ptr
2870         instead of unique_ptr.
2871
2872 2021-08-02  Patrick Palka  <ppalka@redhat.com>
2873
2874         PR libstdc++/101599
2875         * include/bits/ranges_algo.h (__reverse_copy_fn::operator()):
2876         Add missing std::move in return statement.
2877         (__partition_copy_fn::operator()): Rename templtae parameter
2878         _O2 to _Out2.  Uglify function parameters out_true and out_false.
2879         * include/bits/ranges_algobase.h (__copy_or_move): Add missing
2880         std::move to recursive call that unwraps a __normal_iterator
2881         output iterator.
2882         * testsuite/25_algorithms/copy/constrained.cc (test06): New test.
2883         * testsuite/25_algorithms/move/constrained.cc (test05): New test.
2884
2885 2021-08-02  Patrick Palka  <ppalka@redhat.com>
2886
2887         PR libstdc++/101589
2888         * include/std/ranges (lazy_split_view::_InnerIter::base): Make
2889         the const& overload unconstrained and return a const reference
2890         as per LWG 3533.  Make unconditionally noexcept.
2891         (elements_view::base): Revert accidental r12-569 change.
2892         (elements_view::_Iterator::base): Make the const& overload
2893         unconstrained and return a const reference as per LWG 3533.
2894         Make unconditionally noexcept.
2895
2896 2021-08-02  Patrick Palka  <ppalka@redhat.com>
2897
2898         PR libstdc++/101483
2899         * include/std/ranges (join_view::_Iterator::_Iterator): Add
2900         missing std::move.
2901
2902 2021-08-02  Jonathan Wakely  <jwakely@redhat.com>
2903
2904         PR libstdc++/101709
2905         * src/filesystem/ops-common.h (get_temp_directory_from_env):
2906         Add error_code parameter.
2907         * src/c++17/fs_ops.cc (fs::temp_directory_path): Pass error_code
2908         argument to get_temp_directory_from_env and check it.
2909         * src/filesystem/ops.cc (fs::temp_directory_path): Likewise.
2910
2911 2021-08-02  Jonathan Wakely  <jwakely@redhat.com>
2912
2913         * testsuite/20_util/tuple/comparison_operators/overloaded2.cc:
2914         Add dg-error for c++11_only target.
2915
2916 2021-07-30  Jonathan Wakely  <jwakely@redhat.com>
2917
2918         PR libstdc++/65018
2919         * configure.ac: Check for secure_getenv.
2920         * config.h.in: Regenerate.
2921         * configure: Regenerate.
2922         * src/filesystem/ops-common.h (get_temp_directory_from_env): New
2923         helper function to obtain path from the environment.
2924         * src/c++17/fs_ops.cc (fs::temp_directory_path): Use new helper.
2925         * src/filesystem/ops.cc (fs::temp_directory_path): Likewise.
2926         * testsuite/27_io/filesystem/operations/temp_directory_path.cc:
2927         Print messages if test cannot be run.
2928         * testsuite/experimental/filesystem/operations/temp_directory_path.cc:
2929         Likewise. Fix incorrect condition. Use "TMP" to work with
2930         Windows as well as POSIX.
2931
2932 2021-07-29  Hans-Peter Nilsson  <hp@bitrange.com>
2933
2934         * src/c++17/memory_resource.cc: Use __exchange instead
2935         of std::exchange.
2936
2937 2021-07-27  Jonathan Wakely  <jwakely@redhat.com>
2938
2939         * include/experimental/optional (__throw_bad_optional_access):
2940         Replace GNU attribute with C++11 attribute.
2941         (optional::value, optional::value_or): Use if statements
2942         instead of conditional expressions.
2943         * include/std/optional (__throw_bad_optional_access)
2944         (optional::value, optional::value_or): Likewise.
2945
2946 2021-07-27  Marek Polacek  <polacek@redhat.com>
2947
2948         DR 1512
2949         PR c++/99701
2950         * testsuite/20_util/tuple/comparison_operators/overloaded.cc:
2951         Move a line...
2952         * testsuite/20_util/tuple/comparison_operators/overloaded2.cc:
2953         ...here.  New test.
2954
2955 2021-07-27  Jonathan Wakely  <jwakely@redhat.com>
2956
2957         * include/bits/cow_string.h: Consistently use tab for
2958         indentation.
2959
2960 2021-07-27  Jonathan Wakely  <jwakely@redhat.com>
2961
2962         * include/Makefile.am: Add new header.
2963         * include/Makefile.in: Regenerate.
2964         * include/bits/basic_string.h [!_GLIBCXX_USE_CXX11_ABI]
2965         (basic_string): Move definition of Copy-on-Write string to
2966         new file.
2967         * include/bits/basic_string.tcc: Likewise.
2968         * include/bits/cow_string.h: New file.
2969
2970 2021-07-27  Jonathan Wakely  <jwakely@redhat.com>
2971
2972         * include/std/algorithm: Do not include <utility>.
2973         * include/std/functional: Likewise.
2974         * include/std/regex: Include <bits/stl_pair.h> instead of
2975         <utility>.
2976         * include/debug/map.h: Likewise.
2977         * include/debug/multimap.h: Likewise.
2978         * include/debug/multiset.h: Likewise.
2979         * include/debug/set.h: Likewise.
2980         * include/debug/vector: Likewise.
2981         * include/bits/fs_path.h: Likewise.
2982         * include/bits/unique_ptr.h: Do not include <utility>.
2983         * include/experimental/any: Likewise.
2984         * include/experimental/executor: Likewise.
2985         * include/experimental/memory: Likewise.
2986         * include/experimental/optional: Likewise.
2987         * include/experimental/socket: Use __exchange instead
2988         of std::exchange.
2989         * src/filesystem/ops-common.h: Likewise.
2990         * testsuite/20_util/default_delete/48631_neg.cc: Adjust expected
2991         errors to not use a hardcoded line number.
2992         * testsuite/20_util/default_delete/void_neg.cc: Likewise.
2993         * testsuite/20_util/specialized_algorithms/uninitialized_copy/constrained.cc:
2994         Include <utility> for std::as_const.
2995         * testsuite/20_util/specialized_algorithms/uninitialized_default_construct/constrained.cc:
2996         Likewise.
2997         * testsuite/20_util/specialized_algorithms/uninitialized_move/constrained.cc:
2998         Likewise.
2999         * testsuite/20_util/specialized_algorithms/uninitialized_value_construct/constrained.cc:
3000         Likewise.
3001         * testsuite/23_containers/vector/cons/destructible_debug_neg.cc:
3002         Adjust dg-error line number.
3003
3004 2021-07-27  Jonathan Wakely  <jwakely@redhat.com>
3005
3006         * include/Makefile.am: Add bits/utility.h header.
3007         * include/Makefile.in: Regenerate.
3008         * include/bits/utility.h: New file.
3009         * include/std/utility (tuple_size, tuple_element): Move
3010         to new header.
3011         * include/std/type_traits (__is_tuple_like_impl<tuple<T...>>):
3012         Move to <tuple>.
3013         (_Index_tuple, _Build_index_tuple, integer_sequence): Likewise.
3014         (in_place_t, in_place_index_t, in_place_type_t): Likewise.
3015         * include/bits/ranges_util.h: Include new header instead of
3016         <utility>.
3017         * include/bits/stl_pair.h (tuple_size, tuple_element): Move
3018         partial specializations for std::pair here.
3019         (get): Move overloads for std::pair here.
3020         * include/std/any: Include new header instead of <utility>.
3021         * include/std/array: Likewise.
3022         * include/std/memory_resource: Likewise.
3023         * include/std/optional: Likewise.
3024         * include/std/variant: Likewise.
3025         * include/std/tuple: Likewise.
3026         (__is_tuple_like_impl<tuple<T...>>): Move here.
3027         (get) Declare overloads for std::array.
3028         * include/std/version (__cpp_lib_tuples_by_type): Change type
3029         to long.
3030         * testsuite/20_util/optional/84601.cc: Include <utility>.
3031         * testsuite/20_util/specialized_algorithms/uninitialized_fill/constrained.cc:
3032         Likewise.
3033         * testsuite/23_containers/array/tuple_interface/get_neg.cc:
3034         Adjust dg-error line numbers.
3035         * testsuite/std/ranges/access/cbegin.cc: Include <utility>.
3036         * testsuite/std/ranges/access/cend.cc: Likewise.
3037         * testsuite/std/ranges/access/end.cc: Likewise.
3038         * testsuite/std/ranges/single_view.cc: Likewise.
3039
3040 2021-07-23  Jonathan Wakely  <jwakely@redhat.com>
3041
3042         * include/std/future: Include <bits/atomic_base.h> instead of
3043         <atomic>.
3044
3045 2021-07-23  Jonathan Wakely  <jwakely@redhat.com>
3046
3047         * include/bits/stl_relops.h: Update documentation comments.
3048
3049 2021-07-22  Jonathan Wakely  <jwakely@redhat.com>
3050
3051         PR libstdc++/101583
3052         * include/bits/hashtable.h (_Hashtable): Replace mixin with
3053         _Enable_default_ctor. Construct it explicitly in all
3054         non-forwarding, non-defaulted constructors.
3055         * testsuite/23_containers/unordered_map/cons/default.cc: Check
3056         non-default constructors can be used.
3057         * testsuite/23_containers/unordered_set/cons/default.cc:
3058         Likewise.
3059
3060 2021-07-22  David Edelsohn  <dje.gcc@gmail.com>
3061
3062         * config/os/aix/os_defines.h (__LIBC_NO_CPP_MATH_OVERLOADS__): Define.
3063
3064 2021-07-22  Jonathan Wakely  <jwakely@redhat.com>
3065
3066         PR libstdc++/94295
3067         * include/ext/new_allocator.h (_GLIBCXX_OPERATOR_NEW)
3068         (_GLIBCXX_OPERATOR_DELETE, _GLIBCXX_SIZED_DEALLOC): Define.
3069         (allocator::allocate, allocator::deallocate): Use new macros.
3070
3071 2021-07-22  Jonathan Wakely  <jwakely@redhat.com>
3072
3073         PR libstdc++/101571
3074         * include/bits/ranges_uninitialized.h (_DestroyGuard): Change
3075         constructor parameter to reference and use addressof.
3076         * testsuite/util/testsuite_iterators.h: Define deleted operator&
3077         overloads for test iterators.
3078
3079 2021-07-22  Jonathan Wakely  <jwakely@redhat.com>
3080
3081         * include/bits/std_function.h (_Function_base): Add
3082         default member initializers and define constructor as defaulted.
3083         (function::_M_invoker): Add default member initializer.
3084
3085 2021-07-22  Jonathan Wakely  <jwakely@redhat.com>
3086
3087         PR libstdc++/100682
3088         * doc/xml/manual/debug_mode.xml: Update documentation about
3089         debug capability of std::array.
3090         * doc/html/*: Regenerate.
3091         * include/debug/array: New file.
3092
3093 2021-07-21  Jonathan Wakely  <jwakely@redhat.com>
3094
3095         PR libstdc++/101542
3096         * include/ext/rope (sequence_buffer): Add move constructor and
3097         move assignment operator.
3098         * testsuite/ext/rope/101542.cc: New test.
3099
3100 2021-07-20  Jonathan Wakely  <jwakely@redhat.com>
3101
3102         PR libstdc++/101510
3103         * src/c++17/fs_ops.cc (fs::create_directories): Use status
3104         instead of symlink_status.
3105         * src/filesystem/ops.cc (fs::create_directories): Likewise.
3106         * testsuite/27_io/filesystem/operations/create_directories.cc:
3107         Check symlink to existing directory.
3108         * testsuite/27_io/filesystem/operations/create_directory.cc: Do
3109         not test with symlinks on Windows.
3110         * testsuite/experimental/filesystem/operations/create_directories.cc:
3111         Check symlink to existing directory.
3112         * testsuite/experimental/filesystem/operations/create_directory.cc:
3113         Do not test with symlinks on Windows.
3114
3115 2021-07-20  Jonathan Wakely  <jwakely@redhat.com>
3116
3117         PR libstdc++/100863
3118         * include/bits/hashtable.h (_Hashtable): Conditionally delete
3119         default constructor by deriving from _Enable_special_members.
3120         * testsuite/23_containers/unordered_map/cons/default.cc: New test.
3121         * testsuite/23_containers/unordered_set/cons/default.cc: New test.
3122
3123 2021-07-20  Jonathan Wakely  <jwakely@redhat.com>
3124
3125         PR libstdc++/101510
3126         * src/c++17/fs_ops.cc (create_dir): Adjust whitespace.
3127         * testsuite/27_io/filesystem/operations/create_directory.cc:
3128         Test creating directory with name of existing symlink to
3129         directory.
3130         * testsuite/experimental/filesystem/operations/create_directory.cc:
3131         Likewise.
3132
3133 2021-07-16  Jonathan Wakely  <jwakely@redhat.com>
3134
3135         * include/std/tuple (get<I>): Add deleted overload for bad
3136         index.
3137         * testsuite/20_util/tuple/element_access/get_neg.cc: Adjust
3138         expected errors.
3139
3140 2021-07-16  Jonathan Wakely  <jwakely@redhat.com>
3141
3142         * include/bits/max_size_type.h (numeric_limits<__max_size_type>):
3143         Use __int_traits unconditionally.
3144
3145 2021-07-16  Jonathan Wakely  <jwakely@redhat.com>
3146
3147         * include/bits/random.h (_Shift::__value): Use constexpr.
3148         (_Select_uint_least_t::type): Use using-declaration.
3149         (_Mod): Likewise.
3150         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
3151         line number.
3152
3153 2021-07-16  Jonathan Wakely  <jwakely@redhat.com>
3154
3155         * include/bits/cpp_type_traits.h (__INT_N): Use __extension__
3156         instead of diagnostic pragmas.
3157         * include/bits/functional_hash.h: Likewise.
3158         * include/bits/iterator_concepts.h (__is_signed_int128)
3159         (__is_unsigned_int128): Likewise.
3160         * include/bits/max_size_type.h (__max_size_type): Likewise.
3161         (numeric_limits<__max_size_type>): Likewise.
3162         * include/bits/std_abs.h (abs): Likewise.
3163         * include/bits/stl_algobase.h (__size_to_integer): Likewise.
3164         * include/bits/uniform_int_dist.h (uniform_int_distribution):
3165         Likewise.
3166         * include/ext/numeric_traits.h (_GLIBCXX_INT_N_TRAITS):
3167         Likewise.
3168         * include/std/type_traits (__is_integral_helper<INT_N>)
3169         (__is_signed_integer, __is_unsigned_integer)
3170         (__make_unsigned<INT_N>, __make_signed<INT_N>): Likewise.
3171         * include/std/limits (__INT_N): Add __extension__ keyword.
3172         * include/bits/random.h (_Select_uint_least_t)
3173         (random_device): Likewise.
3174
3175 2021-07-16  Patrick Palka  <ppalka@redhat.com>
3176
3177         PR libstdc++/101231
3178         * include/std/ranges (_CachedPosition::_M_get): For non-forward
3179         ranges, just call __builtin_unreachable.
3180         * testsuite/std/ranges/istream_view.cc (test05): New test.
3181
3182 2021-07-16  Patrick Palka  <ppalka@redhat.com>
3183
3184         PR libstdc++/101214
3185         * include/std/ranges (split_view::split_view): Use std::move.
3186         (split_view::_Iterator::_Iterator): Remove redundant
3187         default_initializable constraint.
3188         (split_view::_Sentinel::_Sentinel): Declare.
3189         * testsuite/std/ranges/adaptors/split.cc (test02): New test.
3190
3191 2021-07-16  Marek Polacek  <polacek@redhat.com>
3192
3193         * testsuite/20_util/ratio/operations/ops_overflow_neg.cc: Add
3194         dg-error.
3195
3196 2021-07-16  Jonathan Wakely  <jwakely@redhat.com>
3197
3198         * include/bits/unique_ptr.h: Adjust doxygen markup.
3199
3200 2021-07-16  Jonathan Wakely  <jwakely@redhat.com>
3201
3202         PR libstdc++/101307
3203         * include/std/type_traits: Adjust doxygen markup.
3204
3205 2021-07-16  Jonathan Wakely  <jwakely@redhat.com>
3206
3207         * include/bits/cpp_type_traits.h: Add diagnostic pragmas around
3208         uses of non-standard integer types.
3209         * include/bits/functional_hash.h: Likewise.
3210         * include/bits/iterator_concepts.h: Likewise.
3211         * include/bits/max_size_type.h: Likewise.
3212         * include/bits/std_abs.h: Likewise.
3213         * include/bits/stl_algobase.h: Likewise.
3214         * include/bits/uniform_int_dist.h: Likewise.
3215         * include/ext/numeric_traits.h: Likewise.
3216         * include/std/type_traits: Likewise.
3217
3218 2021-07-15  Jonathan Wakely  <jwakely@redhat.com>
3219
3220         PR libstdc++/101427
3221         * include/std/tuple (tuple_element): Improve static_assert text.
3222         (__get_helper): Add deleted overload.
3223         (get<i>(tuple<T...>&&), get<i>(const tuple<T...>&&)): Use
3224         __get_helper directly.
3225         (__get_helper2): Remove.
3226         (__find_uniq_type_in_pack): New constexpr helper function.
3227         (get<T>): Use __find_uniq_type_in_pack and __get_helper instead
3228         of __get_helper2.
3229         * testsuite/20_util/tuple/element_access/get_neg.cc: Adjust
3230         expected errors.
3231         * testsuite/20_util/tuple/element_access/101427.cc: New test.
3232
3233 2021-07-15  Jonathan Wakely  <jwakely@redhat.com>
3234
3235         PR libstdc++/101429
3236         * include/bits/c++config (__replacement_assert): Add noexcept.
3237         [!_GLIBCXX_VERBOSE] (__glibcxx_assert_impl): Use __builtin_abort
3238         instead of __replacement_assert.
3239
3240 2021-07-14  Jonathan Wakely  <jwakely@redhat.com>
3241
3242         * include/std/string_view (basic_string_view(It, End)): Add
3243         noexcept-specifier.
3244         * testsuite/21_strings/basic_string_view/cons/char/range.cc:
3245         Check noexcept-specifier. Also check construction without CTAD.
3246
3247 2021-07-13  Jonathan Wakely  <jwakely@redhat.com>
3248
3249         PR c++/101361
3250         * include/std/string_view (ends_with): Use traits_type::compare
3251         directly.
3252
3253 2021-07-13  Jonathan Wakely  <jwakely@redhat.com>
3254
3255         * include/std/string_view: Only include <bits/ranges_base.h>
3256         once, and only for C++20 and later.
3257
3258 2021-07-12  Jonathan Wakely  <jwakely@redhat.com>
3259
3260         PR libstdc++/101411
3261         * include/std/span (as_writable_bytes): Add requires-clause.
3262         * testsuite/23_containers/span/101411.cc: New test.
3263
3264 2021-07-09  Matheus Castanho  <msc@linux.ibm.com>
3265
3266         * include/std/mutex (__lock_impl): Check
3267         _GLIBCXX_HAS_GTHREADS before using __gthread_yield.
3268
3269 2021-07-02  Jonathan Wakely  <jwakely@redhat.com>
3270
3271         PR libstdc++/101271
3272         * include/bits/unique_ptr.h (unique_ptr<T[],D>::operator[]):
3273         Remove noexcept-specifier.
3274         (unique_ptr<T[],D>::_S_nothrow_deref): Remove.
3275         * testsuite/20_util/unique_ptr/lwg2762.cc: Remove checks for
3276         operator[].
3277
3278 2021-07-01  Jonathan Wakely  <jwakely@redhat.com>
3279
3280         * doc/doxygen/doxygroups.cc: Fix docs for std::literals.
3281         * doc/doxygen/user.cfg.in: Exclude the Networking TS header.
3282         Add some more predefined macros.
3283         * include/bits/fs_fwd.h: Move @addtogroup commands inside
3284         namespaces. Add better documentation.
3285         * include/bits/fs_path.h: Likewise.
3286         * include/experimental/bits/fs_fwd.h: Likewise.
3287         * include/experimental/bits/fs_path.h: Likewise.
3288         * include/ext/throw_allocator.h: Fix typo and improve docs.
3289         * include/std/chrono: Move @addtogroup commands.
3290         * include/std/system_error: Move @addtogroup commands.
3291         * libsupc++/exception: Improve documentation.
3292         * libsupc++/exception.h: Add @since documentation.
3293
3294 2021-06-30  Jonathan Wakely  <jwakely@redhat.com>
3295
3296         PR libstdc++/101258
3297         * doc/doxygen/user.cfg.in (INPUT): Add <experimental/simd>.
3298         (COLS_IN_ALPHA_INDEX): Remove obsolete tag.
3299         (PREDEFINED): Add/fix some more macros that need to be expanded.
3300         * include/bits/random.h: Stop Doxygen from documenting internal
3301         implementation details.
3302         * include/bits/random.tcc: Likewise.
3303         * include/bits/this_thread_sleep.h: Fix @file name.
3304         * include/experimental/bits/simd.h: Add to Doxygen group. Do not
3305         document internal implementation details.
3306         * include/experimental/bits/simd_detail.h: Do not document
3307         internal implementation details.
3308         * include/experimental/simd: Define Doxygen groups.
3309         * include/experimental/type_traits: Improve documentation for
3310         the header file. Define groups. Use @since commands.
3311         * include/std/scoped_allocator (scoped_allocator_adaptor): Move
3312         declaration before undocumented region.
3313         * include/std/type_traits (true_type, false_type): Use using
3314         declaration instead of typedef.
3315         (is_invocable_v, is_nothrow_invocable_v, is_invocable_r_v)
3316         (is_nothrow_invocable_r_v): Move definitions next to other C++17
3317         variable templates.
3318         Do not document internal implementation details. Move misplaced
3319         group-end command. Define group for variable templates.
3320         * include/std/variant: Do not document internal implementation
3321         details.
3322         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
3323         line number.
3324
3325 2021-06-30  Jonathan Wakely  <jwakely@redhat.com>
3326
3327         * include/experimental/simd: Do not define anything pre-C++17.
3328
3329 2021-06-30  Jonathan Wakely  <jwakely@redhat.com>
3330
3331         * include/bits/random.tcc [__cpp_inline_variables]: Remove
3332         redundant definitions of static constexpr member variables.
3333         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
3334         line number.
3335
3336 2021-06-28  Jonathan Wakely  <jwakely@redhat.com>
3337
3338         * include/bits/streambuf.tcc (__copy_streambufs_eof): Remove
3339         explicit instantiation declarations.
3340         * src/c++11/streambuf-inst.cc (__copy_streambufs_eof): Remove
3341         explicit instantiation definitions.
3342
3343 2021-06-28  Jonathan Wakely  <jwakely@redhat.com>
3344
3345         PR libstdc++/97088
3346         * testsuite/17_intro/names.cc: Fix #if condition for names used
3347         by newlib headers.
3348
3349 2021-06-28  Jonathan Wakely  <jwakely@redhat.com>
3350
3351         PR libstdc++/101236
3352         * include/bits/unique_ptr.h (unique_ptr<T[], D>::operator[]):
3353         Fail gracefully if element_type is incomplete.
3354         * testsuite/20_util/unique_ptr/cons/incomplete.cc: Clarify that
3355         the standard doesn't require this test to work for array types.
3356         * testsuite/20_util/unique_ptr/lwg2762.cc: Check that incomplete
3357         types can be used with array specialization.
3358         * testsuite/20_util/unique_ptr/101236.cc: New test.
3359
3360 2021-06-28  Jonathan Wakely  <jwakely@redhat.com>
3361
3362         * doc/xml/manual/intro.xml: Document LWG 415 change.
3363         * doc/html/manual/bugs.html: Regenerate.
3364         * include/bits/istream.tcc (ws): Create sentry and catch
3365         exceptions.
3366         * testsuite/27_io/basic_istream/ws/char/lwg415.cc: New test.
3367         * testsuite/27_io/basic_istream/ws/wchar_t/lwg415.cc: New test.
3368
3369 2021-06-25  Jonathan Wakely  <jwakely@redhat.com>
3370
3371         * include/bits/ostream.tcc (basic_ostream::write): Call sputn
3372         directly instead of using _M_write. Do setstate(__err) all
3373         outside the try-catch block.
3374         * include/std/ostream (basic_ostream::_M_write): Declare
3375         private. Use __ostream_insert. Do not define for the versioned
3376         namespace.
3377
3378 2021-06-25  Jonathan Wakely  <jwakely@redhat.com>
3379
3380         * doc/xml/manual/intro.xml: Document LWG 581 change.
3381         * doc/html/manual/bugs.html: Regenerate.
3382         * include/bits/basic_ios.tcc: Whitespace.
3383         * include/bits/ostream.tcc (basic_ostream::flush()): Construct
3384         sentry.
3385         * testsuite/27_io/basic_ostream/flush/char/2.cc: Check
3386         additional cases.
3387         * testsuite/27_io/basic_ostream/flush/char/exceptions_badbit_throw.cc:
3388         Likewise.
3389         * testsuite/27_io/basic_ostream/flush/wchar_t/2.cc: Likewise.
3390         * testsuite/27_io/basic_ostream/flush/wchar_t/exceptions_badbit_throw.cc:
3391         Likewise.
3392
3393 2021-06-25  Jonathan Wakely  <jwakely@redhat.com>
3394
3395         * include/bits/ostream.tcc (sentry): Only set failbit if badbit
3396         is set, not if eofbit is set.
3397         (tellp, seekp, seekp): Create sentry object. Do not set badbit
3398         on exceptions.
3399         * testsuite/27_io/basic_ostream/seekp/char/exceptions_badbit_throw.cc:
3400         Adjust expected behaviour.
3401         * testsuite/27_io/basic_ostream/seekp/wchar_t/exceptions_badbit_throw.cc:
3402         Likewise.
3403         * testsuite/27_io/basic_ostream/tellp/char/exceptions_badbit_throw.cc:
3404         Likewise.
3405         * testsuite/27_io/basic_ostream/tellp/wchar_t/exceptions_badbit_throw.cc:
3406         Likewise.
3407         * testsuite/27_io/basic_ostream/seekp/char/n3168.cc: New test.
3408         * testsuite/27_io/basic_ostream/seekp/wchar_t/n3168.cc: New test.
3409         * testsuite/27_io/basic_ostream/tellp/char/n3168.cc: New test.
3410         * testsuite/27_io/basic_ostream/tellp/wchar_t/n3168.cc: New test.
3411
3412 2021-06-25  Jonathan Wakely  <jwakely@redhat.com>
3413
3414         * include/std/syncstream (basic_syncbuf::swap()): Remove
3415         noexcept, as per LWG 3498.
3416
3417 2021-06-25  Jonathan Wakely  <jwakely@redhat.com>
3418
3419         PR libstdc++/97088
3420         * testsuite/17_intro/names.cc: Undef more names for newlib and
3421         also for arm-none-linux-gnueabi.
3422         * testsuite/experimental/names.cc: Disable PCH.
3423
3424 2021-06-25  Matthias Kretz  <m.kretz@gsi.de>
3425
3426         * include/experimental/bits/simd.h (__bit_cast): Implement via
3427         __builtin_bit_cast #if available.
3428         (__proposed::simd_bit_cast): Add overloads for simd and
3429         simd_mask, which use __builtin_bit_cast (or __bit_cast #if not
3430         available), which return an object of the requested type with
3431         the same bits as the argument.
3432         * include/experimental/bits/simd_math.h: Use simd_bit_cast
3433         instead of __bit_cast to allow casts to fixed_size_simd.
3434         (copysign): Remove branch that was only required if __bit_cast
3435         cannot be constexpr.
3436         * testsuite/experimental/simd/tests/bits/test_values.h: Switch
3437         from __bit_cast to __proposed::simd_bit_cast since the former
3438         will not cast fixed_size objects anymore.
3439
3440 2021-06-24  Matthias Kretz  <m.kretz@gsi.de>
3441
3442         * include/experimental/bits/simd_math.h
3443         (_GLIBCXX_SIMD_MATH_CALL2_): Rename arg2_ to __arg2.
3444         (_GLIBCXX_SIMD_MATH_CALL3_): Rename arg2_ to __arg2 and arg3_ to
3445         __arg3.
3446
3447 2021-06-24  Matthias Kretz  <m.kretz@gsi.de>
3448
3449         * include/experimental/bits/simd.h (__execute_on_index_sequence)
3450         (__execute_on_index_sequence_with_return)
3451         (__call_with_n_evaluations, __call_with_subscripts): Add flatten
3452         attribute.
3453
3454 2021-06-24  Matthias Kretz  <m.kretz@gsi.de>
3455
3456         * include/experimental/bits/simd_x86.h (_S_trunc, _S_floor)
3457         (_S_ceil): Set bit 8 (_MM_FROUND_NO_EXC) on AVX and SSE4.1
3458         roundp[sd] calls.
3459
3460 2021-06-24  Matthias Kretz  <m.kretz@gsi.de>
3461
3462         * include/experimental/bits/simd_x86.h (_S_ldexp): The AVX512F
3463         implementation doesn't require a _VecBltnBtmsk ABI tag, it
3464         requires either a 64-Byte input (in which case AVX512F must be
3465         available) or AVX512VL.
3466
3467 2021-06-24  Matthias Kretz  <m.kretz@gsi.de>
3468
3469         * include/experimental/bits/simd_math.h: Undefine internal
3470         macros after use.
3471         (frexp): Move #if to a more sensible position and reformat
3472         preceding code.
3473         (logb): Call _SimdImpl::_S_logb for fixed_size instead of
3474         duplicating the code here.
3475         (modf): Simplify condition.
3476
3477 2021-06-24  Matthias Kretz  <m.kretz@gsi.de>
3478
3479         * include/experimental/bits/simd_math.h (fabs): Remove
3480         fabs(simd<integral>) overload.
3481
3482 2021-06-24  Matthias Kretz  <m.kretz@gsi.de>
3483
3484         * include/experimental/bits/simd_converter.h
3485         (_SimdConverter::operator()): Pass _SimdTuple by const-ref.
3486         * include/experimental/bits/simd_fixed_size.h
3487         (_GLIBCXX_SIMD_FIXED_OP): Pass binary operator _SimdTuple
3488         arguments by const-ref.
3489         (_S_masked_unary): Pass _SimdTuple by const-ref.
3490
3491 2021-06-24  Matthias Kretz  <m.kretz@gsi.de>
3492
3493         * include/experimental/bits/simd_fixed_size.h
3494         (_AbisInSimdTuple): Removed.
3495
3496 2021-06-24  Matthias Kretz  <m.kretz@gsi.de>
3497
3498         * include/experimental/bits/simd.h: Add missing operator~
3499         overload for simd<floating-point> to __float_bitwise_operators.
3500         * include/experimental/bits/simd_builtin.h
3501         (_SimdImplBuiltin::_S_complement): Bitcast to int (and back) to
3502         implement complement for floating-point vectors.
3503         * include/experimental/bits/simd_fixed_size.h
3504         (_SimdImplFixedSize::_S_copysign): New function, forwarding to
3505         copysign implementation of _SimdTuple members.
3506         * include/experimental/bits/simd_math.h (copysign): Call
3507         _SimdImpl::_S_copysign for fixed_size arguments. Simplify
3508         generic copysign implementation using the new ~ operator.
3509
3510 2021-06-24  Jonathan Wakely  <jwakely@redhat.com>
3511
3512         * testsuite/experimental/simd/README.md: Fix typos.
3513
3514 2021-06-24  Jonathan Wakely  <jwakely@redhat.com>
3515
3516         * include/bits/shared_ptr_base.h (__shared_ptr_access::operator[]):
3517         Add noexcept.
3518         * include/bits/unique_ptr.h (unique_ptr::operator*): Add
3519         conditional noexcept as per LWG 2762.
3520         * testsuite/20_util/shared_ptr/observers/array.cc: Check that
3521         dereferencing cannot throw.
3522         * testsuite/20_util/shared_ptr/observers/get.cc: Likewise.
3523         * testsuite/20_util/optional/observers/lwg2762.cc: New test.
3524         * testsuite/20_util/unique_ptr/lwg2762.cc: New test.
3525
3526 2021-06-23  Patrick Palka  <ppalka@redhat.com>
3527
3528         PR c++/101174
3529         * testsuite/23_containers/multiset/cons/deduction.cc:
3530         Uncomment CTAD example that was rejected by this bug.
3531         * testsuite/23_containers/set/cons/deduction.cc: Likewise.
3532
3533 2021-06-23  Jonathan Wakely  <jwakely@redhat.com>
3534
3535         * include/std/chrono (chrono::year::is_leap()): Fix incorrect
3536         logic in comment.
3537
3538 2021-06-23  Matthias Kretz  <m.kretz@gsi.de>
3539
3540         * testsuite/experimental/simd/README.md: New file.
3541
3542 2021-06-23  Matthias Kretz  <m.kretz@gsi.de>
3543
3544         * testsuite/experimental/simd/driver.sh: Rewrite output
3545         verbosity logic. Add -p/--percentage option. Allow -v/--verbose
3546         to be used twice. Add -x and -o short options. Parse long
3547         options with = instead of separating space generically. Parce
3548         contracted short options. Make unrecognized options an error.
3549         If same-line output is active, trap on EXIT to increment the
3550         progress (only with --percentage), erase the line and print the
3551         current status.
3552         * testsuite/experimental/simd/generate_makefile.sh: Initialize
3553         helper files for progress account keeping. Update help target
3554         for changes to DRIVEROPTS.
3555
3556 2021-06-23  Matthias Kretz  <m.kretz@gsi.de>
3557
3558         * testsuite/Makefile.am (check-simd): Remove -fno-tree-vrp flag
3559         and associated warning.
3560         * testsuite/Makefile.in: Regenerate.
3561
3562 2021-06-23  Cassio Neri  <cassio.neri@gmail.com>
3563             Jonathan Wakely  <jwakely@redhat.com>
3564             Ulrich Drepper  <drepper@redhat.com>
3565
3566         * include/std/chrono (chrono::year::is_leap()): Optimize.
3567
3568 2021-06-23  Patrick Palka  <ppalka@redhat.com>
3569
3570         PR c++/86439
3571         * testsuite/23_containers/map/cons/deduction.cc: Replace ambiguous
3572         CTAD examples.
3573         * testsuite/23_containers/multimap/cons/deduction.cc: Likewise.
3574         * testsuite/23_containers/multiset/cons/deduction.cc: Likewise.
3575         Mention one of the replaced examples is broken due to PR101174.
3576         * testsuite/23_containers/set/cons/deduction.cc: Likewise.
3577         * testsuite/23_containers/unordered_map/cons/deduction.cc: Replace
3578         ambiguous CTAD examples.
3579         * testsuite/23_containers/unordered_multimap/cons/deduction.cc:
3580         Likewise.
3581         * testsuite/23_containers/unordered_multiset/cons/deduction.cc:
3582         Likewise.
3583         * testsuite/23_containers/unordered_set/cons/deduction.cc: Likewise.
3584
3585 2021-06-23  Jonathan Wakely  <jwakely@redhat.com>
3586
3587         * include/std/mutex (__detail::__try_lock_impl): Rename
3588         parameter to avoid clashing with newlib's __lockable macro.
3589         (try_lock): Add 'inline' specifier.
3590         * testsuite/17_intro/names.cc: Add check for __lockable.
3591         * testsuite/30_threads/try_lock/5.cc: Add options for pthreads.
3592
3593 2021-06-22  Jonathan Wakely  <jwakely@redhat.com>
3594             Matthias Kretz  <m.kretz@gsi.de>
3595
3596         * include/std/mutex (lock): Replace recursion with iteration
3597         when lockables all have the same type.
3598         (__detail::__try_lock_impl): Likewise. Pass lockables as
3599         parameters, instead of a tuple. Always lock the first one, and
3600         recurse for the rest.
3601         (__detail::__lock_impl): Adjust call to __try_lock_impl.
3602         (__detail::__try_to_lock): Remove.
3603         * testsuite/30_threads/lock/3.cc: Check that mutexes are locked.
3604         * testsuite/30_threads/lock/4.cc: Also test non-heterogeneous
3605         arguments.
3606         * testsuite/30_threads/unique_lock/cons/60497.cc: Also check
3607         std::try_lock.
3608         * testsuite/30_threads/try_lock/5.cc: New test.
3609
3610 2021-06-22  Jonathan Wakely  <jwakely@redhat.com>
3611
3612         * include/std/memory (declare_reachable, undeclare_reachable)
3613         (declare_no_pointers, undeclare_no_pointers, get_pointer_safety)
3614         (pointer_safety): Only define for C++11 to C++20 inclusive.
3615         * testsuite/20_util/pointer_safety/1.cc: Do not run for C++23.
3616
3617 2021-06-22  Jonathan Wakely  <jwakely@redhat.com>
3618
3619         * include/bits/random.h (seed_seq): Constrain initializer-list
3620         constructor.
3621         * include/bits/random.tcc (seed_seq): Add template parameter.
3622         * testsuite/26_numerics/random/seed_seq/cons/default.cc: Check
3623         for noexcept.
3624         * testsuite/26_numerics/random/seed_seq/cons/initlist.cc: Check
3625         constraints.
3626
3627 2021-06-22  Thomas Rodgers  <rodgert@appliantology.com>
3628
3629         PR libstdc++/100806
3630         * include/bits/semaphore_base.h (__atomic_semaphore::_M_release):
3631         Force _M_release() to wake all waiting threads.
3632         * testsuite/30_threads/semaphore/100806.cc: New test.
3633
3634 2021-06-21  Jonathan Wakely  <jwakely@redhat.com>
3635
3636         * include/std/mutex (__try_to_lock): Move to __detail namespace.
3637         (struct __try_lock_impl): Replace with ...
3638         (__detail::__try_lock_impl<Idx>(tuple<Lockables...>&)): New
3639         function templates to implement std::try_lock.
3640         (try_lock): Use new __try_lock_impl.
3641         (__detail::__lock_impl(int, int&, L0&, L1&...)): New function
3642         template to implement std::lock.
3643         (lock): Use __lock_impl.
3644
3645 2021-06-21  Patrick Palka  <ppalka@redhat.com>
3646
3647         * include/bits/ranges_cmp.h (__cpp_lib_ranges): Adjust value.
3648
3649 2021-06-20  Patrick Palka  <ppalka@redhat.com>
3650
3651         * include/std/ranges (__non_propagating_cache::operator bool):
3652         Define for split_view::begin().
3653         (split_view): Define as per P2210.
3654         (views::__detail::__can_split_view): Define.
3655         (views::_Split, views::split): Define.
3656         * testsuite/std/ranges/adaptors/100577.cc (test01, test02):
3657         Test views::split.
3658         * testsuite/std/ranges/adaptors/split.cc: New test.
3659         * testsuite/std/ranges/p2325.cc (test08a): New test.
3660         * testsuite/std/ranges/p2367.cc (test01): Test views::split.
3661
3662 2021-06-20  Patrick Palka  <ppalka@redhat.com>
3663
3664         * include/std/ranges: Rename views::split to views::lazy_split,
3665         split_view to lazy_split_view, etc. throughout.
3666         * testsuite/std/ranges/*: Likewise.
3667         * testsuite/std/ranges/adaptors/lazy_split.cc: New file.
3668         * testsuite/std/ranges/adaptors/lazy_split_neg.cc: New file.
3669
3670 2021-06-20  Patrick Palka  <ppalka@redhat.com>
3671
3672         * include/std/ranges (split_view::_OuterIter::__at_end):
3673         Check _M_trailing_empty.
3674         (split_view::_OuterIter::_M_trailing_empty): Define this
3675         data member.
3676         (split_view::_OuterIter::operator++): Set _M_trailing_empty
3677         appropriately.
3678         (split_view::_OuterIter::operator==): Compare
3679         _M_trailing_empty.
3680         * testsuite/std/ranges/adaptors/100479.cc (test03): Expect two
3681         split parts instead of one.
3682         * testsuite/std/ranges/adaptors/split.cc (test11): New test.
3683
3684 2021-06-20  Patrick Palka  <ppalka@redhat.com>
3685
3686         * include/std/ranges (split_view::_InnerIter::base): Define as
3687         per P2210.
3688
3689 2021-06-19  Patrick Palka  <ppalka@redhat.com>
3690
3691         * include/std/ranges (transform_view::_Iterator::_S_iter_concept):
3692         Consider _Base instead of _Vp as per LWG 3555.
3693         (elements_view::_Iterator::_S_iter_concept): Likewise.
3694
3695 2021-06-19  Patrick Palka  <ppalka@redhat.com>
3696
3697         * include/std/ranges (split_view::_OuterIter::value_type::begin):
3698         Remove the non-const overload, and remove the copyable constraint
3699         on the const overload as per LWG 3553.
3700
3701 2021-06-19  Patrick Palka  <ppalka@redhat.com>
3702
3703         * include/bits/stl_iterator.h
3704         (__detail::__common_iter_use_postfix_proxy): Add
3705         move_constructible constraint as per LWG 3546.
3706         (common_iterator::__postfix_proxy): Adjust initializer of
3707         _M_keep as per LWG 3546.
3708
3709 2021-06-18  Patrick Palka  <ppalka@redhat.com>
3710
3711         PR libstdc++/100387
3712         * include/bits/ranges_algo.h (__minmax_fn::operator()): Rewrite
3713         to limit comparison complexity to 3*N/2.
3714         (__minmax_element_fn::operator()): Likewise.
3715         (shift_right): Avoid premature std::move of __result.
3716         * testsuite/25_algorithms/minmax/constrained.cc (test04, test05):
3717         New tests.
3718         * testsuite/25_algorithms/minmax_element/constrained.cc (test02):
3719         Likewise.
3720
3721 2021-06-18  Patrick Palka  <ppalka@redhat.com>
3722
3723         * include/std/concepts (convertible_to): Just use declval as per
3724         LWG 3557.
3725
3726 2021-06-18  Jonathan Wakely  <jwakely@redhat.com>
3727
3728         PR libstdc++/95833
3729         * include/std/numeric (reduce(Iter, Iter, T, BinaryOp)): Replace
3730         incorrect static_assert with ones matching the 'Mandates'
3731         conditions in the standard.
3732         * testsuite/26_numerics/reduce/95833.cc: New test.
3733
3734 2021-06-18  Jonathan Wakely  <jwakely@redhat.com>
3735
3736         * testsuite/21_strings/basic_string/cons/char/1.cc: Use
3737         diagnostic pragma to suppress -Wstringop-overread error.
3738
3739 2021-06-18  Patrick Palka  <ppalka@redhat.com>
3740
3741         * include/bits/ranges_algo.h (__find_fn, find, __find_if_fn)
3742         (find_if, __find_if_not_fn, find_if_not, _in_in_result)
3743         (__mismatch_fn, mismatch, __search_fn, search): Move to ...
3744         * include/bits/ranges_util.h: ... here.
3745         * include/std/ranges (__detail::find, __detail::find_if)
3746         (__detail::find_if_not, __detail::mismatch): Remove.
3747         (filter_view): Use ranges::find_if instead.
3748         (drop_while_view): Use ranges::find_if_not instead.
3749         (split_view): Use ranges::find and ranges::mismatch instead.
3750
3751 2021-06-18  Patrick Palka  <ppalka@redhat.com>
3752
3753         * include/bits/iterator_concepts.h (weakly_incrementable): Remove
3754         default_initializable requirement.
3755         * include/bits/ranges_base.h (ranges::view): Likewise.
3756         * include/bits/ranges_util.h (subrange): Constrain the default
3757         ctor.
3758         * include/bits/stl_iterator.h (back_insert_iterator): Remove the
3759         default ctor.
3760         (front_insert_iterator): Likewise.
3761         (insert_iterator): Likewise.  Remove NSDMIs.
3762         (common_iterator): Constrain the default ctor.
3763         (counted_iterator): Likewise.
3764         * include/bits/stream_iterator.h (ostream_iterator): Remove the
3765         default ctor.
3766         * include/std/ranges (__detail::__box::operator=): Handle
3767         self-assignment in the primary template.
3768         (__detail::__box): In the partial specialization: adjust
3769         constraints as per P2325.  Add specialized operator= for the
3770         case when the wrapped type is not copyable.  Constrain the
3771         default ctor.  Avoid list-initialization.
3772         (single_view): Constraint the default ctor.
3773         (iota_view): Relax semiregular constraint to copyable.
3774         Constrain the default ctor.
3775         (iota_view::_Iterator): Constraint the default ctor.
3776         (basic_istream_view): Remove the default ctor.  Remove NSDMIs.
3777         Remove redundant checks for empty _M_stream.
3778         (basic_istream_view::_Iterator): Likewise.
3779         (ref_view): Remove the default ctor.  Remove NSDMIs.
3780         (ref_view::_Iterator): Constrain the default ctor.
3781         (__detail::__non_propagating_cache::operator=): Define overload
3782         for assigning from a value of the underlying type.
3783         (filter_view): Likewise.
3784         (filter_view::_Iterator): Likewise.
3785         (transform_view): Likewise.
3786         (transform_view::_Iterator): Likewise.
3787         (take_view): Likewise.
3788         (take_view::_Iterator): Likewise.
3789         (take_while_view): Likewise.
3790         (take_while_view::_Iterator): Likewise.
3791         (drop_while_view): Likewise.
3792         (drop_while_view::_Iterator): Likewise.
3793         (join_view): Likewise.
3794         (split_view::_OuterIter::__current): Adjust after changing the
3795         type of _M_current.
3796         (split_view::_M_current): Wrap it in a __non_propagating_cache.
3797         (split_view::split_view): Constrain the default ctor.
3798         (common_view): Constrain the default ctor.
3799         (reverse_view): Likewise.
3800         (elements_view): Likewise.
3801         * include/std/span (enable_view<span<_ElementType, _Extent>>):
3802         Define this partial specialization to true unconditionally.
3803         * include/std/version (__cpp_lib_ranges): Adjust value.
3804         * testsuite/24_iterators/back_insert_iterator/constexpr.cc:
3805         Don't attempt to default construct a back_insert_iterator.
3806         * testsuite/24_iterators/front_insert_iterator/constexpr.cc:
3807         Don't attempt to default construct a front_insert_iterator.
3808         * testsuite/24_iterators/insert_iterator/constexpr.cc:
3809         Don't attempt to default construct an insert_iterator.
3810         * testsuite/24_iterators/ostream_iterator/requirements/constexpr.cc:
3811         Remove this test for default constructibility of ostream_iterator.
3812         * testsuite/std/ranges/97600.cc: Don't attempt to default
3813         construct a basic_istream_view.
3814         * testsuite/std/ranges/adaptors/detail/semiregular_box.cc:
3815         Rename to ...
3816         * testsuite/std/ranges/adaptors/detail/copyable_box.cc: ... this.
3817         (test02): Adjust now that __box is copyable-box not
3818         semiregular-box.
3819         (test03): New test.
3820         * testsuite/std/ranges/p2325.cc: New test.
3821         * testsuite/std/ranges/single_view.cc (test06): New test.
3822         * testsuite/std/ranges/view.cc: Adjust now that view doesn't
3823         require default_initializable.
3824
3825 2021-06-17  Jonathan Wakely  <jwakely@redhat.com>
3826
3827         PR libstdc++/91488
3828         * include/bits/basic_string.h (__cpp_lib_constexpr_string): Only
3829         define when is_constant_evaluated is available.
3830         * include/bits/char_traits.h (__cpp_lib_constexpr_char_traits):
3831         Likewise.
3832         (__constant_string_p, __constant_array_p): Remove.
3833         (char_traits): Use is_constant_evaluated directly.
3834         * include/std/version (__cpp_lib_constexpr_char_traits)
3835         (__cpp_lib_constexpr_string): Only define when
3836         is_constant_evaluated is available.
3837
3838 2021-06-17  Patrick Palka  <ppalka@redhat.com>
3839
3840         PR libstdc++/100940
3841         * include/std/ranges (__adaptor::_Partial): For the "simple"
3842         forwarding partial specializations, also require that
3843         the extra arguments are trivially copyable.
3844         * testsuite/std/ranges/adaptors/100577.cc (test04): New test.
3845
3846 2021-06-17  Patrick Palka  <ppalka@redhat.com>
3847
3848         PR libstdc++/100940
3849         * include/std/ranges (__adaptor::_RangeAdaptor): Document the
3850         template form of _S_has_simple_extra_args.
3851         (__adaptor::__adaptor_has_simple_extra_args): Add _Args template
3852         parameter pack.  Try to treat _S_has_simple_extra_args as a
3853         variable template parameterized by _Args.
3854         (__adaptor::_Partial): Pass _Arg/_Args to the constraint
3855         __adaptor_has_simple_extra_args.
3856         (views::_Take::_S_has_simple_extra_args): Templatize according
3857         to the type of the extra argument.
3858         (views::_Drop::_S_has_simple_extra_args): Likewise.
3859         (views::_Split::_S_has_simple_extra_args): Define.
3860         * testsuite/std/ranges/adaptors/100577.cc (test01, test02):
3861         Adjust after changes to _S_has_simple_extra_args mechanism.
3862         (test03): Define.
3863
3864 2021-06-16  Jonathan Wakely  <jwakely@redhat.com>
3865
3866         * include/bits/iterator_concepts.h (__decay_copy): Name type.
3867
3868 2021-06-16  Jonathan Wakely  <jwakely@redhat.com>
3869
3870         * include/bits/ranges_base.h (ranges::begin, ranges::end)
3871         (ranges::cbegin, ranges::cend, ranges::rbeing, ranges::rend)
3872         (ranges::crbegin, ranges::crend, ranges::size, ranges::ssize)
3873         (ranges::empty, ranges::data, ranges::cdata): Remove final
3874         keywords and deleted operator& overloads.
3875         * testsuite/24_iterators/customization_points/iter_move.cc: Use
3876         new is_customization_point_object function.
3877         * testsuite/24_iterators/customization_points/iter_swap.cc:
3878         Likewise.
3879         * testsuite/std/concepts/concepts.lang/concept.swappable/swap.cc:
3880         Likewise.
3881         * testsuite/std/ranges/access/begin.cc: Likewise.
3882         * testsuite/std/ranges/access/cbegin.cc: Likewise.
3883         * testsuite/std/ranges/access/cdata.cc: Likewise.
3884         * testsuite/std/ranges/access/cend.cc: Likewise.
3885         * testsuite/std/ranges/access/crbegin.cc: Likewise.
3886         * testsuite/std/ranges/access/crend.cc: Likewise.
3887         * testsuite/std/ranges/access/data.cc: Likewise.
3888         * testsuite/std/ranges/access/empty.cc: Likewise.
3889         * testsuite/std/ranges/access/end.cc: Likewise.
3890         * testsuite/std/ranges/access/rbegin.cc: Likewise.
3891         * testsuite/std/ranges/access/rend.cc: Likewise.
3892         * testsuite/std/ranges/access/size.cc: Likewise.
3893         * testsuite/std/ranges/access/ssize.cc: Likewise.
3894         * testsuite/util/testsuite_iterators.h
3895         (is_customization_point_object): New function.
3896
3897 2021-06-15  Jonathan Wakely  <jwakely@redhat.com>
3898
3899         * include/bits/ranges_base.h (ranges::begin, ranges::end)
3900         (ranges::cbegin, ranges::cend, ranges::rbeing, ranges::rend)
3901         (ranges::crbegin, ranges::crend, ranges::size, ranges::ssize)
3902         (ranges::empty, ranges::data, ranges::cdata): Make types final.
3903         Add deleted operator& overloads.
3904         (ranges::advance, ranges::distance, ranges::next, ranges::prev):
3905         Likewise.
3906         * testsuite/std/ranges/headers/ranges/synopsis.cc: Replace
3907         ill-formed & expressions with using-declarations. Add checks for
3908         other function objects.
3909
3910 2021-06-15  Jonathan Wakely  <jwakely@redhat.com>
3911
3912         * include/bits/ranges_util.h (view_interface): Add noexcept to
3913         empty, operator bool, data and size members.
3914         (subrange): Add noexcept to constructors.
3915         * include/std/ranges (single_view, ref_view): Add noexcept to
3916         constructors.
3917         (views::single, views::all): Add noexcept.
3918         * testsuite/std/ranges/adaptors/all.cc: Check noexcept.
3919         * testsuite/std/ranges/single_view.cc: Likewise.
3920
3921 2021-06-15  Jonathan Wakely  <jwakely@redhat.com>
3922
3923         * include/bits/ranges_util.h (subrange): Add __size_type typedef
3924         and use it to simplify declarations.
3925         (subrange(i, s, n)): Remove assertion.
3926         * testsuite/std/ranges/subrange/constexpr.cc: New test.
3927
3928 2021-06-15  Jonathan Wakely  <jwakely@redhat.com>
3929
3930         * include/bits/iterator_concepts.h (__cust_access::__decay_copy):
3931         Replace with function object.
3932         (__cust_access::__member_begin, ___cust_access::_adl_begin): Use
3933         __decay_copy unqualified.
3934         * include/bits/ranges_base.h (__member_end, __adl_end):
3935         Likewise. Use __range_iter_t for type of ranges::begin.
3936         (__member_rend): Use correct value category for rbegin argument.
3937         (__member_data): Use __decay_copy unqualified.
3938         (__begin_data): Use __range_iter_t for type of ranges::begin.
3939
3940 2021-06-14  Jonathan Wakely  <jwakely@redhat.com>
3941
3942         * include/bits/ranges_base.h (ranges::empty): Check whether
3943         conversion to bool can throw.
3944         * testsuite/std/ranges/access/empty.cc: Check for correct
3945         noexcept-specifier.
3946
3947 2021-06-14  Jonathan Wakely  <jwakely@redhat.com>
3948
3949         PR libstdc++/100894
3950         * include/std/type_traits (__common_ref_impl<X&, Y&>): Only
3951         use the type if it's a reference.
3952         * testsuite/20_util/common_reference/100894.cc: New test.
3953
3954 2021-06-14  Jonathan Wakely  <jwakely@redhat.com>
3955
3956         * testsuite/experimental/filesystem/path/native/conv_c++23.cc:
3957         Add dg-require-filesystem-ts directive.
3958
3959 2021-06-14  Jonathan Wakely  <jwakely@redhat.com>
3960
3961         PR libstdc++/101034
3962         * include/std/any (any(in_place_t<T>, initializer_list<U>, A&&...))
3963         (any::emplace<T>(initializer_list<U>, A&&...)): Fix constraint
3964         to use lvalue.
3965         * testsuite/20_util/any/cons/101034.cc: New test.
3966
3967 2021-06-14  Jonathan Wakely  <jwakely@redhat.com>
3968
3969         * testsuite/17_intro/headers/c++2017/all_attributes.cc: Add
3970         -std=gnu++17 option.
3971
3972 2021-06-14  Jonathan Wakely  <jwakely@redhat.com>
3973
3974         PR libstdc++/101056
3975         * libsupc++/compare (compare_partial_order_fallback): Add
3976         constraint using reversed parameter order, as per LWG 3465.
3977         * testsuite/18_support/comparisons/algorithms/fallback.cc:
3978         Adjust expected result.
3979
3980 2021-06-14  Jonathan Wakely  <jwakely@redhat.com>
3981
3982         * libsupc++/compare (__decayed_same_as): New helper concept.
3983         (strong_order, weak_order, partial_order): Constrain with new
3984         concept instead of using static_assert.
3985         (compare_strong_order_fallback, compare_weak_order_fallback)
3986         (compare_partial_order_fallback): Likewise. Do not deduce return
3987         types. Remove redundant if-constexpr checks.
3988         * testsuite/18_support/comparisons/algorithms/fallback.cc: New test.
3989
3990 2021-06-14  Jonathan Wakely  <jwakely@redhat.com>
3991
3992         PR libstdc++/101055
3993         * include/std/tuple: Use reserved form of attribute name.
3994         * testsuite/17_intro/headers/c++2011/all_attributes.cc: Add
3995         check for no_unique_address.
3996         * testsuite/17_intro/headers/c++2014/all_attributes.cc:
3997         Likewise.
3998         * testsuite/17_intro/headers/c++2017/all_attributes.cc:
3999         Likewise.
4000
4001 2021-06-11  Jonathan Wakely  <jwakely@redhat.com>
4002
4003         * include/bits/fs_path.h (operator==, operator<=>): Use new
4004         _S_compare function.
4005         (path::_S_compare): New function to call path::compare in a
4006         context where path::iterator is complete.
4007         * include/experimental/bits/fs_path.h (operator<, operator==):
4008         Define after path::iterator is complete.
4009         * testsuite/27_io/filesystem/path/native/conv_c++23.cc: New
4010         test.
4011         * testsuite/experimental/filesystem/path/native/conv_c++23.cc:
4012         New test.
4013
4014 2021-06-09  Thomas Rodgers  <rodgert@appliantology.com>
4015
4016         * testsuite/29_atomics/atomic_ref/wait_notify.cc: Guard
4017         test logic with constexpr check for is_always_lock_free.
4018
4019 2021-06-09  Jonathan Wakely  <jwakely@redhat.com>
4020
4021         PR libstdc++/100982
4022         * include/std/optional (optional::operator=(const optional<U>&)):
4023         Fix value category used in is_assignable check.
4024         * testsuite/20_util/optional/assignment/100982.cc: New test.
4025
4026 2021-06-09  Jonathan Wakely  <jwakely@redhat.com>
4027
4028         * include/bits/allocator.h (allocator::is_always_equal): Deprecate.
4029         * include/bits/iterator_concepts.h (indirectly_readable_traits):
4030         Add LWG issue number to comment.
4031         * include/std/memory_resource (polymorphic_allocator::release):
4032         Deprecate.
4033         * testsuite/20_util/allocator/requirements/typedefs.cc: Add
4034         dg-warning for deprecation. Also check std::allocator<void>.
4035
4036 2021-06-08  Thomas Rodgers  <rodgert@appliantology.com>
4037
4038         PR libstdc++/100889
4039         * include/bits/atomic_base.h (atomic_ref<_Tp*>::wait):
4040         Change parameter type from _Tp to _Tp*.
4041         * testsuite/29_atomics/atomic_ref/wait_notify.cc: Extend
4042         coverage of types tested.
4043
4044 2021-06-08  Thomas Rodgers  <rodgert@appliantology.com>
4045
4046         * include/std/barrier (__tree_barrier::_M_arrive): Remove
4047         unnecessary hasher instantiation.
4048
4049 2021-06-08  Jonathan Wakely  <jwakely@redhat.com>
4050
4051         * include/experimental/propagate_const (swap): Constrain.
4052         * testsuite/experimental/propagate_const/swap/lwg3413.cc: New test.
4053
4054 2021-06-07  Avi Kivity  <avi@scylladb.com>
4055
4056         PR libstdc++/100900
4057         * include/std/ranges (elements_view::__iter_cat::_S_iter_cat):
4058         Add missing typename.
4059
4060 2021-06-07  Jonathan Wakely  <jwakely@redhat.com>
4061
4062         PR libstdc++/98842
4063         * include/std/optional (operator<=>(const optional<T>& const U&)):
4064         Add missing constraint and add workaround for template
4065         recursion.
4066         * testsuite/20_util/optional/relops/three_way.cc: Check that
4067         type without equality comparison cannot be compared when wrapped
4068         in std::optional.
4069
4070 2021-06-05  Jonathan Wakely  <jwakely@redhat.com>
4071
4072         PR libstdc++/100824
4073         * include/bits/ranges_base.h (_SSize): Return signed type.
4074         * testsuite/std/ranges/access/ssize.cc: Check with __int128.
4075
4076 2021-06-04  Jonathan Wakely  <jwakely@redhat.com>
4077
4078         * include/bits/ranges_base.h (_SSize): Return the result of
4079         ranges::size converted to the wider of make-signed-like-t<S> and
4080         ptrdiff_t, rather than the ranges different type.
4081         * testsuite/std/ranges/access/ssize.cc: Adjust expected result
4082         for an iota_view that uses an integer class type for its
4083         difference_type.
4084
4085 2021-06-04  Jonathan Wakely  <jwakely@redhat.com>
4086
4087         PR libstdc++/100824
4088         * include/bits/ranges_base.h (__member_data): Use __decay_copy.
4089         * testsuite/std/ranges/access/data.cc: Add testcase from PR.
4090
4091 2021-06-04  Jonathan Wakely  <jwakely@redhat.com>
4092
4093         PR libstdc++/100824
4094         * include/bits/iterator_concepts.h (__detail::__decay_copy)
4095         (__detail::__member_begin, __detail::__adl_begin): Move to
4096         namespace ranges::__cust_access.
4097         (__detail::__ranges_begin): Likewise, and rename to __begin.
4098         Remove redundant static assertion.
4099         * include/bits/ranges_base.h (_Begin, _End, _RBegin, _REnd):
4100         Use lvalue in noexcept specifier.
4101         (__as_const): Add non-deduced parameter for value category.
4102         (_CBegin, _CEnd, _CRBegin, _CREnd, _CData): Adjust uses of
4103         __as_const.
4104         (__member_size, __adl_size, __member_empty, __size0_empty):
4105         (__eq_iter_empty, __adl_data): Use lvalue objects in
4106         requirements.
4107         (__sentinel_size): Likewise. Add check for conversion to
4108         unsigned-like.
4109         (__member_data): Allow non-lvalue types to satisfy the concept,
4110         but use lvalue object in requirements.
4111         (_Size, _SSize): Remove forwarding to always use an lvalue.
4112         (_Data): Likewise. Add static assertion for arrays.
4113         * testsuite/std/ranges/access/cdata.cc: Adjust expected
4114         behaviour for rvalues. Add negative tests for ill-formed
4115         expressions.
4116         * testsuite/std/ranges/access/data.cc: Likewise.
4117         * testsuite/std/ranges/access/empty.cc: Adjust expected
4118         behaviour for rvalues.
4119         * testsuite/std/ranges/access/size.cc: Likewise.
4120
4121 2021-06-04  Tim Adye  <Tim.Adye@cern.ch>
4122
4123         * include/std/any (any::_Manager::_S_access): New static
4124         function to access the contained value.
4125         (any::emplace, __any_caster): Use _S_access member of the
4126         manager type.
4127
4128 2021-06-04  Jonathan Wakely  <jwakely@redhat.com>
4129
4130         * doc/xml/manual/status_cxx2020.xml:
4131         * doc/html/*: Regenerate.
4132         * include/bits/hashtable.h (__cpp_lib_generic_unordered_lookup):
4133         Define.
4134         * include/std/version (__cpp_lib_generic_unordered_lookup):
4135         Define.
4136         * testsuite/23_containers/unordered_map/operations/1.cc: Check
4137         feature test macro.
4138         * testsuite/23_containers/unordered_set/operations/1.cc:
4139         Likewise.
4140
4141 2021-06-03  Patrick Palka  <ppalka@redhat.com>
4142
4143         * include/bits/ranges_algo.h (__detail::__can_reread_output):
4144         Factor out this concept from ...
4145         (__unique_copy_fn::operator()): ... here.  Use the concept
4146         throughout.
4147         * testsuite/std/ranges/range.cc: Remove now ill-formed use
4148         of range_value_t on an output_range.
4149         * testsuite/util/testsuite_iterators.h (output_iterator_wrapper):
4150         Define value_type, pointer and reference member types to void.
4151
4152 2021-06-03  Patrick Palka  <ppalka@redhat.com>
4153
4154         PR libstdc++/100577
4155         * include/std/ranges (_RangeAdaptorClosure): Document
4156         _S_has_simple_call_op mechanism.
4157         (_RangeAdaptor): Document _S_has_simple_extra_args mechanism.
4158         (__closure_has_simple_call_op): New concept.
4159         (__adaptor_has_simple_extra_args): Likewise.
4160         (_Partial<_Adaptor, _Args...>): New partial specialization.
4161         (_Partial<_Adaptor, _Arg>): Likewise.
4162         (_Pipe<_Lhs, _Rhs>): Likewise.
4163         (views::_All::_S_has_simple_call_op): Define to true.
4164         (views::_Filter::_S_has_simple_extra_args): Likewise.
4165         (views::_Transform::_S_has_simple_extra_args): Likewise.
4166         (views::_Take::_S_has_simple_extra_args): Likewise.
4167         (views::_TakeWhile::_S_has_simple_extra_args): Likewise.
4168         (views::_Drop::_S_has_simple_extra_args): Likewise.
4169         (views::_DropWhile::_S_has_simple_extra_args): Likewise.
4170         (views::_Join::_S_has_simple_call_op): Likewise.
4171         (views::_Split): Document why we don't define
4172         _S_has_simple_extra_args to true for this adaptor.
4173         (views::_Common::_S_has_simple_call_op): Define to true.
4174         (views::_Reverse::_S_has_simple_call_op): Likewise.
4175         (views::_Elements::_S_has_simple_call_op): Likewise.
4176         * testsuite/std/ranges/adaptors/100577.cc: New test.
4177
4178 2021-06-02  Jonathan Wakely  <jwakely@redhat.com>
4179
4180         PR libstdc++/100863
4181         PR libstdc++/65816
4182         * include/bits/hashtable_policy.h (_Hashtable_ebo_helper):
4183         Value-initialize subobject.
4184         * testsuite/23_containers/unordered_map/allocator/default_init.cc:
4185         Remove XFAIL.
4186         * testsuite/23_containers/unordered_set/allocator/default_init.cc:
4187         Remove XFAIL.
4188
4189 2021-06-02  Jonathan Wakely  <jwakely@redhat.com>
4190
4191         PR libstdc++/96088
4192         * testsuite/23_containers/unordered_map/96088.cc: Adjust
4193         expected number of allocations.
4194         * testsuite/23_containers/unordered_set/96088.cc: Likewise.
4195
4196 2021-06-02  Jonathan Wakely  <jwakely@redhat.com>
4197
4198         * doc/xml/manual/status_cxxis29124.xml: Improve punctuation.
4199         * doc/xml/manual/status_cxxtr1.xml: Likewise.
4200         * doc/xml/manual/status_cxxtr24733.xml: Likewise.
4201         * doc/html/*: Regenerate.
4202
4203 2021-06-01  Patrick Palka  <ppalka@redhat.com>
4204
4205         PR c++/65816
4206         * testsuite/23_containers/deque/allocator/default_init.cc,
4207         testsuite/23_containers/forward_list/allocator/default_init.cc,
4208         testsuite/23_containers/list/allocator/default_init.cc,
4209         testsuite/23_containers/map/allocator/default_init.cc,
4210         testsuite/23_containers/set/allocator/default_init.cc,
4211         testsuite/23_containers/vector/allocator/default_init.cc,
4212         testsuite/23_containers/vector/bool/allocator/default_init.cc:
4213         Remove xfail.
4214
4215 2021-06-01  Jonathan Wakely  <jwakely@redhat.com>
4216
4217         * testsuite/23_containers/unordered_map/96088.cc: Change
4218         effective target to c++17.
4219         * testsuite/23_containers/unordered_set/96088.cc: Likewise.
4220
4221 2021-06-01  Jonathan Wakely  <jwakely@redhat.com>
4222
4223         * testsuite/22_locale/ctype/is/string/89728_neg.cc: Only test
4224         isblank for C++11 and later.
4225
4226 2021-06-01  Jonathan Wakely  <jwakely@redhat.com>
4227
4228         PR libstdc++/100833
4229         * include/bits/ranges_base.h (ranges::advance(iter, n, sentinel)):
4230         Fix return value for no-op case.
4231         * testsuite/24_iterators/range_operations/advance.cc: Test
4232         return values of three-argument overload.
4233
4234 2021-06-01  Jonathan Wakely  <jwakely@redhat.com>
4235
4236         PR libstdc++/99453
4237         * python/Makefile.am: Use archive name for printer hook if no
4238         dynamic library name is available.
4239         * python/Makefile.in: Regenerate.
4240
4241 2021-05-30  Gerald Pfeifer  <gerald@pfeifer.com>
4242
4243         * doc/xml/manual/abi.xml: Remove dead reference to "Intel
4244         Compilers for Linux: Compatibility with GNU Compilers" article.
4245         * doc/html/manual/abi.html: Regenerate.
4246
4247 2021-05-26  François Dumont  <fdumont@gcc.gnu.org>
4248
4249         * include/debug/formatter.h
4250         (_Error_formatter::_Parameter::_Named): New.
4251         (_Error_formatter::_Parameter::_Type): Inherit latter.
4252         (_Error_formatter::_Parameter::_M_integer): Likewise.
4253         (_Error_formatter::_Parameter::_M_string): Likewise.
4254         * src/c++11/debug.cc: Include <cstring>.
4255         (_Print_func_t): New.
4256         (print_raw(PrintContext&, const char*, ptrdiff_t)): New.
4257         (print_word): Use '%.*s' format in fprintf to render only expected number of chars.
4258         (pretty_print(PrintContext&, const char*, _Print_func_t)): New.
4259         (print_type): Rename in...
4260         (print_type_info): ...this. Use pretty_print.
4261         (print_address, print_integer): New.
4262         (print_named_name, print_iterator_constness, print_iterator_state): New.
4263         (print_iterator_seq_type): New.
4264         (print_named_field, print_type_field, print_instance_field, print_iterator_field): New.
4265         (print_field): Use latters.
4266         (print_quoted_named_name, print_type_type, print_type, print_instance): New.
4267         (print_string(PrintContext&, const char*, const _Parameter*, size_t)):
4268         Change signature to...
4269         (print_string(PrintContext&, const char*, ptrdiff_t, const _Parameter*, size_t)):
4270         ...this and adapt. Remove intermediate buffer to render input string.
4271         (print_string(PrintContext&, const char*, ptrdiff_t)): New.
4272
4273 2021-05-26  Jonathan Wakely  <jwakely@redhat.com>
4274
4275         PR libstdc++/100768
4276         * include/bits/ranges_base.h (advance, distance, next, prev):
4277         Replace function templates with function objects.
4278         * testsuite/24_iterators/headers/iterator/synopsis_c++20.cc:
4279         Adjust for changes to function objects.
4280         * testsuite/std/ranges/adaptors/elements.cc: Add using
4281         declarations for names from namespace ranges.
4282         * testsuite/std/ranges/adaptors/transform.cc: Likewise.
4283         * testsuite/24_iterators/range_operations/100768.cc: New test.
4284
4285 2021-05-24  François Dumont  <fdumont@gcc.gnu.org>
4286
4287         PR libstdc++/96088
4288         * include/bits/hashtable_policy.h (_Select2nd): New.
4289         (_NodeBuilder<>): New.
4290         (_ReuseOrAllocNode<>::operator()): Use variadic template args.
4291         (_AllocNode<>::operator()): Likewise.
4292         * include/bits/hashtable.h
4293         (_Hashtable<>::__node_builder_t): New.
4294         (_Hashtable<>::_M_insert_unique<>(_Kt&&, _Arg&&, const _NodeGenerator&)):
4295          New.
4296         (_Hashtable<>::_S_forward_key): New.
4297         (_Hashtable<>::_M_insert): Use latter.
4298         (_Hashtable<>::_M_insert(const_iterator, _Arg&&, const _NodeGenerator&, false_type)):
4299         Instantiate node first, compute hash code second.
4300         * testsuite/23_containers/unordered_map/96088.cc: New test.
4301         * testsuite/23_containers/unordered_multimap/96088.cc: New test.
4302         * testsuite/23_containers/unordered_multiset/96088.cc: New test.
4303         * testsuite/23_containers/unordered_set/96088.cc: New test.
4304         * testsuite/util/replacement_memory_operators.h
4305         (counter::_M_increment): New.
4306         (counter::_M_decrement): New.
4307         (counter::reset()): New.
4308
4309 2021-05-24  Patrick Palka  <ppalka@redhat.com>
4310
4311         PR libstdc++/100479
4312         * include/std/ranges (__detail::__non_propagating_cache): Move
4313         definition up to before that of _CachedPosition.  Make base
4314         class _Optional_base protected instead of private.  Add const
4315         overload for operator*.
4316         (__detail::_CachedPosition): Rewrite the partial specialization
4317         for forward ranges as a derived class of __non_propagating_cache.
4318         Remove the size constraint on the partial specialization for
4319         random access ranges.  Add copy/move/copy-assignment/move-assignment
4320         members to the offset partial specialization for random
4321         access ranges that propagate the cached value but additionally
4322         invalidate it in the source object on move.
4323         * testsuite/std/ranges/adaptors/100479.cc: New test.
4324
4325 2021-05-24  Jonathan Wakely  <jwakely@redhat.com>
4326
4327         * testsuite/25_algorithms/inplace_merge/constrained.cc: Qualify
4328         call to ranges::next.
4329         * testsuite/25_algorithms/is_sorted/constrained.cc: Likewise.
4330         * testsuite/25_algorithms/is_sorted_until/constrained.cc:
4331         Likewise.
4332         * testsuite/25_algorithms/swap_ranges/1.cc: Qualify call to
4333         swap_ranges.
4334
4335 2021-05-21  Patrick Palka  <ppalka@redhat.com>
4336
4337         PR libstdc++/100606
4338         * include/std/ranges (drop_while_view::begin): Assert the
4339         precondition added by LWG 3490.
4340
4341 2021-05-21  Patrick Palka  <ppalka@redhat.com>
4342
4343         PR libstdc++/100690
4344         * include/std/ranges (iota_view::_Sentinel::_M_distance_from):
4345         Split out this member function from ...
4346         (iota_view::_Sentinel::operator-): ... here, for sake of access
4347         control.
4348         * testsuite/std/ranges/iota/iota_view.cc (test05): New test.
4349
4350 2021-05-20  Jonathan Wakely  <jwakely@redhat.com>
4351
4352         * include/bits/random.tcc (__representable_as_double)
4353         (__p1_representable_as_double): Add "" to static asserts.
4354
4355 2021-05-20  Jonathan Wakely  <jwakely@redhat.com>
4356
4357         PR libstdc++/100676
4358         * include/bits/c++config (__glibcxx_assert_1): Rename to ...
4359         (__glibcxx_constexpr_assert): ... this.
4360         (__glibcxx_assert_impl): Use __glibcxx_constexpr_assert.
4361         (__glibcxx_assert): Define as either __glibcxx_constexpr_assert
4362         or __glibcxx_assert_impl.
4363         (__glibcxx_assert_2): Remove
4364         * include/debug/macros.h (_GLIBCXX_DEBUG_VERIFY_AT_F): Use
4365         __glibcxx_constexpr_assert instead of __glibcxx_assert_1.
4366         * testsuite/21_strings/basic_string_view/element_access/char/back_constexpr_neg.cc:
4367         Adjust expected error.
4368         * testsuite/21_strings/basic_string_view/element_access/char/constexpr_neg.cc:
4369         Likewise.
4370         * testsuite/21_strings/basic_string_view/element_access/char/front_constexpr_neg.cc:
4371         Likewise.
4372         Likewise.
4373         * testsuite/21_strings/basic_string_view/element_access/wchar_t/back_constexpr_neg.cc:
4374         Likewise.
4375         * testsuite/21_strings/basic_string_view/element_access/wchar_t/constexpr_neg.cc:
4376         Likewise.
4377         * testsuite/21_strings/basic_string_view/element_access/wchar_t/front_constexpr_neg.cc:
4378         Likewise.
4379         * testsuite/23_containers/span/back_neg.cc: Likewise.
4380         * testsuite/23_containers/span/front_neg.cc: Likewise.
4381         * testsuite/23_containers/span/index_op_neg.cc: Likewise.
4382
4383 2021-05-20  Patrick Palka  <ppalka@redhat.com>
4384
4385         PR libstdc++/100639
4386         * include/bits/stl_iterator.h (reverse_iterator::difference_type):
4387         In C++20 mode, define in terms of iter_difference_t as per P0896R4.
4388         (reverse_iterator::reference): Likewise, but with iter_reference_t.
4389         (reverse_iterator::value_type): Likewise, but with iter_value_t.
4390         * testsuite/std/ranges/adaptors/reverse.cc (test08): New test.
4391         * testsuite/24_iterators/reverse_iterator/100639.cc: New test.
4392
4393 2021-05-20  Joern Rennecke  <joern.rennecke@riscy-ip.com>
4394
4395         PR libstdc++/100361
4396         * include/std/charconv (to_chars): Hide the overloads for
4397         floating-point types for 16 bit targets.
4398         * src/c++17/floating_to_chars.cc: Don't compile for 16 bit targets.
4399         * testsuite/20_util/to_chars/double.cc: Run this test only on
4400         size32plus targets.
4401         * testsuite/20_util/to_chars/float.cc: Likewise.
4402         * testsuite/20_util/to_chars/long_double.cc: Likewise.
4403
4404 2021-05-18  Patrick Palka  <ppalka@redhat.com>
4405
4406         PR libstdc++/100631
4407         * include/std/ranges (elements_view::_Sentinel::operator-): Use
4408         _M_distance_from in the other operator- overload too.
4409         * testsuite/std/ranges/adaptors/elements.cc (test06): Augment test.
4410
4411 2021-05-18  Thomas Schwinge  <thomas@codesourcery.com>
4412
4413         * testsuite/lib/prune.exp: Add note about 'dg-note'.
4414
4415 2021-05-18  Patrick Palka  <ppalka@redhat.com>
4416
4417         PR libstdc++/100475
4418         * include/std/ranges (__box::__box): Use non-list-initialization
4419         in member initializer list of in-place constructor of the
4420         partial specialization for semiregular types.
4421         (__box::operator->): Use std::__addressof.
4422         * testsuite/std/ranges/adaptors/detail/semiregular_box.cc
4423         (test02): New test.
4424         * testsuite/std/ranges/single_view.cc (test04): New test.
4425
4426 2021-05-18  Patrick Palka  <ppalka@redhat.com>
4427
4428         PR libstdc++/100621
4429         * include/std/ranges (reverse_view::_S_needs_cached_begin):
4430         Set to true if the underlying non-common random-access range
4431         doesn't have a sized sentinel.
4432
4433 2021-05-18  Patrick Palka  <ppalka@redhat.com>
4434
4435         PR libstdc++/100631
4436         * include/std/ranges (elements_view::_Iterator): Also befriend
4437         _Sentinel<!_Const>.
4438         (elements_view::_Sentinel::_M_equal): Templatize.
4439         (elements_view::_Sentinel::_M_distance_from): Split out from ...
4440         (elements_view::_Sentinel::operator-): ... here.  Depend on
4441         _Base2 instead of _Base in the return type.
4442         * testsuite/std/ranges/adaptors/elements.cc (test06, test07):
4443         New tests.
4444
4445 2021-05-17  Thomas Rodgers  <rodgert@twrodgers.com>
4446
4447         * include/bits/atomic_wait.h (__waiter::_M_do_wait_v): loop
4448         until value change observed.
4449         (__waiter_base::_M_laundered): New member.
4450         (__waiter_base::_M_notify): Check _M_laundered to determine
4451         whether to wake one or all.
4452         (__detail::__atomic_compare): Return true if call to
4453         __builtin_memcmp() == 0.
4454         (__waiter_base::_S_do_spin_v): Adjust predicate.
4455         * testsuite/29_atomics/atomic/wait_notify/100334.cc: New
4456         test.
4457
4458 2021-05-17  Jonathan Wakely  <jwakely@redhat.com>
4459
4460         PR libstdc++/100630
4461         * include/experimental/bits/fs_path.h (__is_constructible_from):
4462         Test construction from a const lvalue, not an rvalue.
4463         * testsuite/27_io/filesystem/path/construct/100630.cc: New test.
4464         * testsuite/experimental/filesystem/path/construct/100630.cc:
4465         New test.
4466
4467 2021-05-17  Antony Polukhin  <antoshkka@gmail.com>
4468
4469         PR libstdc++/89728
4470         * include/bits/locale_facets.h (ctype<basic_string<C,T,A>>):
4471         Declare (but do not define) partial specialization.
4472         * testsuite/22_locale/ctype/is/string/89728_neg.cc: New test.
4473
4474 2021-05-17  Jonathan Wakely  <jwakely@redhat.com>
4475
4476         * include/std/thread (jthread::_S_create): Fix static assert
4477         message.
4478         * testsuite/30_threads/jthread/95989.cc: Re-enable test.
4479         * testsuite/30_threads/jthread/jthread.cc: Do not require
4480         pthread effective target.
4481         * testsuite/30_threads/jthread/2.cc: Moved to...
4482         * testsuite/30_threads/jthread/version.cc: ...here.
4483
4484 2021-05-17  Jonathan Wakely  <jwakely@redhat.com>
4485
4486         * doc/Makefile.am: Simplify doxygen recipes and use --latex_cmd.
4487         * doc/Makefile.in: Regenerate.
4488         * doc/doxygen/user.cfg.in (LATEX_CMD_NAME): Add placeholder
4489         value.
4490         * scripts/run_doxygen (print_usage): Always print to stdout and
4491         do not exit.
4492         (fail): New function for exiting on error.
4493         (parse_options): Handle --latex_cmd. Do not treat --help the
4494         same as errors. Simplify handling of required arguments.
4495
4496 2021-05-12  Jonathan Wakely  <jwakely@redhat.com>
4497
4498         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc:
4499         Increase dg-timeout-factor to 4. Fix -Wunused-parameter
4500         warnings. Replace bitwise AND with logical AND in loop
4501         condition.
4502         * testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc:
4503         Replace bitwise AND with logical AND in loop condition.
4504         * testsuite/util/pstl/test_utils.h: Remove unused parameter
4505         names.
4506
4507 2021-05-11  Patrick Palka  <ppalka@redhat.com>
4508
4509         * src/c++17/ryu/LOCAL_PATCHES: Update.
4510         * src/c++17/ryu/ryu_generic_128.h: Remove extern "C".
4511         Remove declarations for never-defined functions.
4512         * testsuite/20_util/to_chars/4.cc: New test.
4513
4514 2021-05-11  Jonathan Wakely  <jwakely@redhat.com>
4515
4516         * testsuite/20_util/headers/memory/synopsis.cc: Define C++98
4517         alternative for macro.
4518         * testsuite/20_util/shared_ptr/creation/99006.cc: Add effective
4519         target keyword.
4520         * testsuite/25_algorithms/copy/debug/99402.cc: Avoid C++11
4521         syntax.
4522
4523 2021-05-11  Jonathan Wakely  <jwakely@redhat.com>
4524
4525         * include/bits/allocator.h (allocator<void>) [C++20]: Add
4526         missing noexcept to constructor. Restore missing POCMA and
4527         is_always_equal_traits.
4528         [C++17]: Make construct and destroy members private and
4529         declare allocator_traits as a friend.
4530         * include/bits/memoryfwd.h (allocator_traits): Declare.
4531         * include/ext/malloc_allocator.h (malloc_allocator::allocate):
4532         Add nodiscard attribute. Add static assertion for LWG 3307.
4533         * include/ext/new_allocator.h (new_allocator::allocate): Add
4534         static assertion for LWG 3307.
4535         * testsuite/20_util/allocator/void.cc: Check that converting
4536         constructor is noexcept. Check for propagation traits and
4537         size_type and difference_type. Check that pointer and
4538         const_pointer are gone in C++20.
4539
4540 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
4541
4542         * include/std/stop_token: Remove TODO comment.
4543
4544 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
4545
4546         * include/bits/shared_ptr_base.h (__shared_count(unique_ptr&&)):
4547         Initialize a non-reference deleter from an rvalue, as per LWG
4548         3548.
4549         (__shared_ptr::_UniqCompatible): Add missing constraint.
4550         * testsuite/20_util/shared_ptr/cons/lwg3548.cc: New test.
4551         * testsuite/20_util/shared_ptr/cons/unique_ptr_deleter.cc: Check
4552         constraints.
4553
4554 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
4555
4556         * testsuite/17_intro/headers/c++2017/all_attributes.cc: Remove
4557         -std=gnu++17 from dg-options directive.
4558         * testsuite/17_intro/headers/c++2017/all_no_exceptions.cc:
4559         Likewise.
4560         * testsuite/17_intro/headers/c++2017/all_pedantic_errors.cc:
4561         Likewise.
4562         * testsuite/17_intro/headers/c++2017/operator_names.cc:
4563         Likewise.
4564         * testsuite/17_intro/headers/c++2017/parallel_mode.cc: Likewise.
4565         * testsuite/17_intro/headers/c++2017/stdc++.cc: Likewise.
4566         * testsuite/17_intro/headers/c++2017/stdc++_multiple_inclusion.cc:
4567         Likewise.
4568         * testsuite/18_support/aligned_alloc/aligned_alloc.cc: Likewise.
4569         * testsuite/18_support/byte/81076.cc: Likewise.
4570         * testsuite/18_support/byte/global_neg.cc: Likewise.
4571         * testsuite/18_support/byte/ops.cc: Likewise.
4572         * testsuite/18_support/byte/requirements.cc: Likewise.
4573         * testsuite/18_support/headers/cfloat/values_c++17.cc: Likewise.
4574         * testsuite/18_support/launder/1.cc: Likewise.
4575         * testsuite/18_support/launder/nodiscard.cc: Likewise.
4576         * testsuite/18_support/launder/requirements.cc: Likewise.
4577         * testsuite/18_support/launder/requirements_neg.cc: Likewise.
4578         * testsuite/18_support/new_aligned.cc: Likewise.
4579         * testsuite/18_support/uncaught_exceptions/uncaught_exceptions.cc:
4580         Likewise.
4581         * testsuite/19_diagnostics/error_code/is_error_code_v.cc:
4582         Likewise.
4583         * testsuite/19_diagnostics/error_condition/hash.cc: Likewise.
4584         * testsuite/20_util/addressof/requirements/constexpr.cc:
4585         Likewise.
4586         * testsuite/20_util/as_const/1.cc: Likewise.
4587         * testsuite/20_util/as_const/rvalue_neg.cc: Likewise.
4588         * testsuite/20_util/bind/83427.cc: Likewise.
4589         * testsuite/20_util/bind/is_placeholder_v.cc: Likewise.
4590         * testsuite/20_util/bool_constant/requirements.cc: Likewise.
4591         * testsuite/20_util/duration/arithmetic/constexpr_c++17.cc:
4592         Likewise.
4593         * testsuite/20_util/duration/requirements/treat_as_floating_point_v.cc:
4594         Likewise.
4595         * testsuite/20_util/duration_cast/rounding.cc: Likewise.
4596         * testsuite/20_util/enable_shared_from_this/members/weak_from_this.cc:
4597         Likewise.
4598         * testsuite/20_util/from_chars/1_neg.cc: Likewise.
4599         * testsuite/20_util/from_chars/requirements.cc: Likewise.
4600         * testsuite/20_util/function/91456.cc: Likewise.
4601         * testsuite/20_util/function/cons/deduction.cc: Likewise.
4602         * testsuite/20_util/function_objects/83607.cc: Likewise.
4603         * testsuite/20_util/function_objects/invoke/59768.cc: Likewise.
4604         * testsuite/20_util/function_objects/mem_fn/80478.cc: Likewise.
4605         * testsuite/20_util/function_objects/not_fn/1.cc: Likewise.
4606         * testsuite/20_util/function_objects/not_fn/87538.cc: Likewise.
4607         * testsuite/20_util/has_unique_object_representations/requirements/explicit_instantiation.cc:
4608         Likewise.
4609         * testsuite/20_util/has_unique_object_representations/requirements/typedefs.cc:
4610         Likewise.
4611         * testsuite/20_util/has_unique_object_representations/value.cc:
4612         Likewise.
4613         * testsuite/20_util/hash/nullptr.cc: Likewise.
4614         * testsuite/20_util/in_place/requirements.cc: Likewise.
4615         * testsuite/20_util/is_aggregate/incomplete_neg.cc: Likewise.
4616         * testsuite/20_util/is_aggregate/requirements/explicit_instantiation.cc:
4617         Likewise.
4618         * testsuite/20_util/is_aggregate/requirements/typedefs.cc:
4619         Likewise.
4620         * testsuite/20_util/is_aggregate/value.cc: Likewise.
4621         * testsuite/20_util/is_invocable/83395.cc: Likewise.
4622         * testsuite/20_util/is_invocable/91456.cc: Likewise.
4623         * testsuite/20_util/is_invocable/requirements/explicit_instantiation.cc:
4624         Likewise.
4625         * testsuite/20_util/is_invocable/requirements/typedefs.cc:
4626         Likewise.
4627         * testsuite/20_util/is_invocable/value.cc: Likewise.
4628         * testsuite/20_util/is_literal_type/deprecated-1z.cc: Likewise.
4629         * testsuite/20_util/is_nothrow_constructible/94003.cc: Likewise.
4630         * testsuite/20_util/is_nothrow_invocable/83395.cc: Likewise.
4631         * testsuite/20_util/is_nothrow_invocable/requirements/explicit_instantiation.cc:
4632         Likewise.
4633         * testsuite/20_util/is_nothrow_invocable/requirements/typedefs.cc: Likewise.
4634         * testsuite/20_util/is_nothrow_invocable/value.cc: Likewise.
4635         * testsuite/20_util/is_nothrow_swappable/requirements/explicit_instantiation.cc:
4636         Likewise.
4637         * testsuite/20_util/is_nothrow_swappable/requirements/typedefs.cc:
4638         Likewise.
4639         * testsuite/20_util/is_nothrow_swappable/value.cc: Likewise.
4640         * testsuite/20_util/is_nothrow_swappable_with/requirements/explicit_instantiation.cc:
4641         Likewise.
4642         * testsuite/20_util/is_nothrow_swappable_with/requirements/typedefs.cc:
4643         Likewise.
4644         * testsuite/20_util/is_nothrow_swappable_with/value.cc:
4645         Likewise.
4646         * testsuite/20_util/is_swappable/requirements/explicit_instantiation.cc:
4647         Likewise.
4648         * testsuite/20_util/is_swappable/requirements/typedefs.cc:
4649         Likewise.
4650         * testsuite/20_util/is_swappable/value.cc: Likewise.
4651         * testsuite/20_util/is_swappable_with/requirements/explicit_instantiation.cc:
4652         Likewise.
4653         * testsuite/20_util/is_swappable_with/requirements/typedefs.cc:
4654         Likewise.
4655         * testsuite/20_util/is_swappable_with/value.cc: Likewise.
4656         * testsuite/20_util/logical_traits/83134.cc: Likewise.
4657         * testsuite/20_util/logical_traits/requirements/explicit_instantiation.cc:
4658         Likewise.
4659         * testsuite/20_util/logical_traits/requirements/typedefs.cc:
4660         Likewise.
4661         * testsuite/20_util/logical_traits/value.cc: Likewise.
4662         * testsuite/20_util/pair/cons/deduction.cc: Likewise.
4663         * testsuite/20_util/pair/swap_cxx17.cc: Likewise.
4664         * testsuite/20_util/ratio/requirements/ratio_equal_v.cc:
4665         Likewise.
4666         * testsuite/20_util/reference_wrapper/83427.cc: Likewise.
4667         * testsuite/20_util/reference_wrapper/deduction.cc: Likewise.
4668         * testsuite/20_util/shared_ptr/casts/reinterpret.cc: Likewise.
4669         * testsuite/20_util/shared_ptr/cons/deduction.cc: Likewise.
4670         * testsuite/20_util/shared_ptr/requirements/weak_type.cc:
4671         Likewise.
4672         * testsuite/20_util/time_point/arithmetic/constexpr.cc:
4673         Likewise.
4674         * testsuite/20_util/time_point_cast/rounding.cc: Likewise.
4675         * testsuite/20_util/to_chars/3.cc: Likewise.
4676         * testsuite/20_util/to_chars/chars_format.cc: Likewise.
4677         * testsuite/20_util/to_chars/lwg3266.cc: Likewise.
4678         * testsuite/20_util/to_chars/requirements.cc: Likewise.
4679         * testsuite/20_util/tuple/78939.cc: Likewise.
4680         * testsuite/20_util/tuple/apply/1.cc: Likewise.
4681         * testsuite/20_util/tuple/apply/2.cc: Likewise.
4682         * testsuite/20_util/tuple/cons/deduction.cc: Likewise.
4683         * testsuite/20_util/tuple/make_from_tuple/1.cc: Likewise.
4684         * testsuite/20_util/tuple/make_from_tuple/2.cc: Likewise.
4685         * testsuite/20_util/tuple/swap_cxx17.cc: Likewise.
4686         * testsuite/20_util/tuple/tuple_size_v.cc: Likewise.
4687         * testsuite/20_util/unique_ptr/cons/deduction_neg.cc: Likewise.
4688         * testsuite/20_util/uses_allocator/requirements/uses_allocator_v.cc:
4689         Likewise.
4690         * testsuite/20_util/variable_templates_for_traits.cc: Likewise.
4691         * testsuite/20_util/void_t/1.cc: Likewise.
4692         * testsuite/20_util/weak_ptr/cons/deduction.cc: Likewise.
4693         * testsuite/24_iterators/container_access.cc: Likewise.
4694         * testsuite/24_iterators/headers/iterator/range_access_c++17.cc:
4695         Likewise.
4696         * testsuite/24_iterators/headers/iterator/synopsis_c++17.cc:
4697         Likewise.
4698         * testsuite/24_iterators/range_access/range_access_cpp17.cc:
4699         Likewise.
4700         * testsuite/24_iterators/range_access/range_access_cpp17_neg.cc:
4701         Likewise.
4702         * testsuite/26_numerics/gcd/gcd_neg.cc: Likewise.
4703         * testsuite/26_numerics/headers/cmath/functions_std_c++17.cc:
4704         Likewise.
4705         * testsuite/26_numerics/headers/cmath/hypot.cc: Likewise.
4706         * testsuite/26_numerics/headers/cmath/special_functions_global.cc:
4707         Likewise.
4708         * testsuite/26_numerics/lcm/1.cc: Likewise.
4709         * testsuite/26_numerics/lcm/lcm_neg.cc: Likewise.
4710         * testsuite/26_numerics/valarray/deduction.cc: Likewise.
4711         * testsuite/27_io/basic_ostream/inserters_other/char/lwg2221.cc:
4712         Likewise.
4713         * testsuite/27_io/manipulators/standard/char/quoted_sv.cc:
4714         Likewise.
4715         * testsuite/27_io/manipulators/standard/wchar_t/quoted_sv.cc:
4716         Likewise.
4717         * testsuite/27_io/types/4.cc: Likewise.
4718         * testsuite/28_regex/basic_regex/ctors/deduction.cc: Likewise.
4719         * testsuite/libstdc++-prettyprinters/91997.cc: Likewise.
4720         * testsuite/libstdc++-prettyprinters/cxx17.cc: Likewise.
4721
4722 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
4723
4724         * testsuite/20_util/function_objects/searchers.cc: Remove
4725         -std=gnu++17 from dg-options directive.
4726         * testsuite/20_util/specialized_algorithms/memory_management_tools/1.cc:
4727         Likewise.
4728         * testsuite/20_util/specialized_algorithms/memory_management_tools/destroy_neg.cc:
4729         Likewise.
4730         * testsuite/20_util/specialized_algorithms/uninitialized_value_construct/94540.cc:
4731         Likewise.
4732         * testsuite/20_util/specialized_algorithms/uninitialized_value_construct/94831.cc:
4733         Likewise.
4734         * testsuite/20_util/specialized_algorithms/uninitialized_value_construct_n/94540.cc:
4735         Likewise.
4736         * testsuite/20_util/specialized_algorithms/uninitialized_value_construct_n/sizes.cc:
4737         Likewise.
4738         * testsuite/20_util/unique_ptr/specialized_algorithms/swap_cxx17.cc:
4739         Likewise.
4740         * testsuite/25_algorithms/clamp/1.cc: Likewise.
4741         * testsuite/25_algorithms/clamp/2.cc: Likewise.
4742         * testsuite/25_algorithms/clamp/constexpr.cc: Likewise.
4743         * testsuite/25_algorithms/clamp/requirements/explicit_instantiation/1.cc:
4744         Likewise.
4745         * testsuite/25_algorithms/clamp/requirements/explicit_instantiation/pod.cc:
4746         Likewise.
4747         * testsuite/25_algorithms/for_each/for_each_n.cc: Likewise.
4748         * testsuite/25_algorithms/for_each/for_each_n_debug.cc:
4749         Likewise.
4750         * testsuite/25_algorithms/sample/1.cc: Likewise.
4751         * testsuite/25_algorithms/sample/2.cc: Likewise.
4752         * testsuite/25_algorithms/sample/3.cc: Likewise.
4753         * testsuite/25_algorithms/sample/81221.cc: Likewise.
4754         * testsuite/25_algorithms/search/searcher.cc: Likewise.
4755         * testsuite/26_numerics/exclusive_scan/1.cc: Likewise.
4756         * testsuite/26_numerics/inclusive_scan/1.cc: Likewise.
4757         * testsuite/26_numerics/reduce/1.cc: Likewise.
4758         * testsuite/26_numerics/reduce/2.cc: Likewise.
4759         * testsuite/26_numerics/transform_exclusive_scan/1.cc: Likewise.
4760         * testsuite/26_numerics/transform_inclusive_scan/1.cc: Likewise.
4761         * testsuite/26_numerics/transform_reduce/1.cc: Likewise.
4762
4763 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
4764
4765         * testsuite/23_containers/array/cons/deduction.cc: Remove
4766         -std=gnu++17 from dg-options directive.
4767         * testsuite/23_containers/array/cons/deduction_neg.cc: Likewise.
4768         * testsuite/23_containers/array/element_access/constexpr_c++17.cc:
4769         Likewise.
4770         * testsuite/23_containers/array/requirements/constexpr_iter.cc:
4771         Likewise.
4772         * testsuite/23_containers/array/specialized_algorithms/swap_cxx17.cc:
4773         Likewise.
4774         * testsuite/23_containers/deque/cons/deduction.cc: Likewise.
4775         * testsuite/23_containers/deque/modifiers/emplace/cxx17_return.cc:
4776         Likewise.
4777         * testsuite/23_containers/forward_list/cons/deduction.cc:
4778         Likewise.
4779         * testsuite/23_containers/forward_list/modifiers/emplace_cxx17_return.cc:
4780         Likewise.
4781         * testsuite/23_containers/list/cons/deduction.cc: Likewise.
4782         * testsuite/23_containers/list/modifiers/emplace/cxx17_return.cc:
4783         Likewise.
4784         * testsuite/23_containers/map/cons/deduction.cc: Likewise.
4785         * testsuite/23_containers/map/modifiers/extract.cc: Likewise.
4786         * testsuite/23_containers/map/modifiers/insert/83226.cc:
4787         Likewise.
4788         * testsuite/23_containers/map/modifiers/insert_or_assign/1.cc:
4789         Likewise.
4790         * testsuite/23_containers/map/modifiers/merge.cc: Likewise.
4791         * testsuite/23_containers/map/modifiers/try_emplace/1.cc:
4792         Likewise.
4793         * testsuite/23_containers/multimap/cons/deduction.cc: Likewise.
4794         * testsuite/23_containers/multimap/modifiers/extract.cc:
4795         Likewise.
4796         * testsuite/23_containers/multimap/modifiers/merge.cc: Likewise.
4797         * testsuite/23_containers/multiset/cons/deduction.cc: Likewise.
4798         * testsuite/23_containers/multiset/modifiers/extract.cc:
4799         Likewise.
4800         * testsuite/23_containers/multiset/modifiers/merge.cc: Likewise.
4801         * testsuite/23_containers/priority_queue/deduction.cc: Likewise.
4802         * testsuite/23_containers/queue/deduction.cc: Likewise.
4803         * testsuite/23_containers/queue/members/emplace_cxx17_return.cc:
4804         Likewise.
4805         * testsuite/23_containers/set/cons/deduction.cc: Likewise.
4806         * testsuite/23_containers/set/modifiers/extract.cc: Likewise.
4807         * testsuite/23_containers/set/modifiers/merge.cc: Likewise.
4808         * testsuite/23_containers/set/modifiers/node_swap.cc: Likewise.
4809         * testsuite/23_containers/stack/deduction.cc: Likewise.
4810         * testsuite/23_containers/stack/members/emplace_cxx17_return.cc:
4811         Likewise.
4812         * testsuite/23_containers/unordered_map/cons/deduction.cc:
4813         Likewise.
4814         * testsuite/23_containers/unordered_map/modifiers/extract.cc:
4815         Likewise.
4816         * testsuite/23_containers/unordered_map/modifiers/insert_or_assign.cc:
4817         Likewise.
4818         * testsuite/23_containers/unordered_map/modifiers/merge.cc:
4819         Likewise.
4820         * testsuite/23_containers/unordered_map/modifiers/try_emplace.cc:
4821         Likewise.
4822         * testsuite/23_containers/unordered_multimap/cons/deduction.cc:
4823         Likewise.
4824         * testsuite/23_containers/unordered_multimap/modifiers/extract.cc:
4825         Likewise.
4826         * testsuite/23_containers/unordered_multimap/modifiers/merge.cc:
4827         Likewise.
4828         * testsuite/23_containers/unordered_multiset/cons/deduction.cc:
4829         Likewise.
4830         * testsuite/23_containers/unordered_multiset/modifiers/extract.cc:
4831         Likewise.
4832         * testsuite/23_containers/unordered_multiset/modifiers/merge.cc:
4833         Likewise.
4834         * testsuite/23_containers/unordered_set/cons/deduction.cc:
4835         Likewise.
4836         * testsuite/23_containers/unordered_set/modifiers/extract.cc:
4837         Likewise.
4838         * testsuite/23_containers/unordered_set/modifiers/merge.cc:
4839         Likewise.
4840         * testsuite/23_containers/vector/bool/emplace_cxx17_return.cc:
4841         Likewise.
4842         * testsuite/23_containers/vector/cons/89164_c++17.cc: Likewise.
4843         * testsuite/23_containers/vector/cons/deduction.cc: Likewise.
4844         * testsuite/23_containers/vector/modifiers/emplace/cxx17_return.cc:
4845         Likewise.
4846
4847 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
4848
4849         * testsuite/21_strings/basic_string/79162.cc: Remove
4850         -std=gnu++17 from dg-options directive.
4851         * testsuite/21_strings/basic_string/cons/char/7.cc: Likewise.
4852         * testsuite/21_strings/basic_string/cons/char/79162.cc:
4853         Likewise.
4854         * testsuite/21_strings/basic_string/cons/char/86138.cc:
4855         Likewise.
4856         * testsuite/21_strings/basic_string/cons/char/9.cc: Likewise.
4857         * testsuite/21_strings/basic_string/cons/char/deduction.cc:
4858         Likewise.
4859         * testsuite/21_strings/basic_string/cons/char/moveable2_c++17.cc:
4860         Likewise.
4861         * testsuite/21_strings/basic_string/cons/wchar_t/7.cc: Likewise.
4862         * testsuite/21_strings/basic_string/cons/wchar_t/79162.cc:
4863         Likewise.
4864         * testsuite/21_strings/basic_string/cons/wchar_t/86138.cc:
4865         Likewise.
4866         * testsuite/21_strings/basic_string/cons/wchar_t/9.cc: Likewise.
4867         * testsuite/21_strings/basic_string/cons/wchar_t/deduction.cc:
4868         Likewise.
4869         * testsuite/21_strings/basic_string/cons/wchar_t/moveable2_c++17.cc:
4870         Likewise.
4871         * testsuite/21_strings/basic_string/hash/hash.cc: Likewise.
4872         * testsuite/21_strings/basic_string/lwg2758.cc: Likewise.
4873         * testsuite/21_strings/basic_string/lwg2946.cc: Likewise.
4874         * testsuite/21_strings/basic_string/modifiers/append/char/4.cc:
4875         Likewise.
4876         * testsuite/21_strings/basic_string/modifiers/append/wchar_t/4.cc:
4877         Likewise.
4878         * testsuite/21_strings/basic_string/modifiers/assign/char/4.cc:
4879         Likewise.
4880         * testsuite/21_strings/basic_string/modifiers/assign/wchar_t/4.cc:
4881         Likewise.
4882         * testsuite/21_strings/basic_string/modifiers/insert/char/3.cc:
4883         Likewise.
4884         * testsuite/21_strings/basic_string/modifiers/insert/wchar_t/3.cc:
4885         Likewise.
4886         * testsuite/21_strings/basic_string/modifiers/replace/char/7.cc:
4887         Likewise.
4888         * testsuite/21_strings/basic_string/modifiers/replace/wchar_t/7.cc:
4889         Likewise.
4890         * testsuite/21_strings/basic_string/operations/compare/char/2.cc:
4891         Likewise.
4892         * testsuite/21_strings/basic_string/operations/compare/wchar_t/2.cc:
4893         Likewise.
4894         * testsuite/21_strings/basic_string/operations/data/char/2.cc:
4895         Likewise.
4896         * testsuite/21_strings/basic_string/operations/data/char/86169.cc:
4897         Likewise.
4898         * testsuite/21_strings/basic_string/operations/data/wchar_t/2.cc:
4899         Likewise.
4900         * testsuite/21_strings/basic_string/operations/find/char/5.cc:
4901         Likewise.
4902         * testsuite/21_strings/basic_string/operations/find/wchar_t/5.cc:
4903         Likewise.
4904         * testsuite/21_strings/basic_string/operators/char/5.cc:
4905         Likewise.
4906         * testsuite/21_strings/basic_string/operators/wchar_t/5.cc:
4907         Likewise.
4908         * testsuite/21_strings/basic_string_view/capacity/1.cc:
4909         Likewise.
4910         * testsuite/21_strings/basic_string_view/capacity/empty_neg.cc:
4911         Likewise.
4912         * testsuite/21_strings/basic_string_view/cons/char/1.cc:
4913         Likewise.
4914         * testsuite/21_strings/basic_string_view/cons/char/2.cc:
4915         Likewise.
4916         * testsuite/21_strings/basic_string_view/cons/char/3.cc:
4917         Likewise.
4918         * testsuite/21_strings/basic_string_view/cons/char/nonnull.cc:
4919         Likewise.
4920         * testsuite/21_strings/basic_string_view/cons/wchar_t/1.cc:
4921         Likewise.
4922         * testsuite/21_strings/basic_string_view/cons/wchar_t/2.cc:
4923         Likewise.
4924         * testsuite/21_strings/basic_string_view/cons/wchar_t/3.cc:
4925         Likewise.
4926         * testsuite/21_strings/basic_string_view/cons/wchar_t/nonnull.cc:
4927         Likewise.
4928         * testsuite/21_strings/basic_string_view/element_access/char/1.cc:
4929         Likewise.
4930         * testsuite/21_strings/basic_string_view/element_access/char/2.cc:
4931         Likewise.
4932         * testsuite/21_strings/basic_string_view/element_access/char/back_constexpr_neg.cc:
4933         Likewise.
4934         * testsuite/21_strings/basic_string_view/element_access/char/constexpr.cc:
4935         Likewise.
4936         * testsuite/21_strings/basic_string_view/element_access/char/constexpr_neg.cc:
4937         Likewise.
4938         * testsuite/21_strings/basic_string_view/element_access/char/empty.cc:
4939         Likewise.
4940         * testsuite/21_strings/basic_string_view/element_access/char/front_back.cc:
4941         Likewise.
4942         * testsuite/21_strings/basic_string_view/element_access/char/front_back_constexpr.cc:
4943         Likewise.
4944         * testsuite/21_strings/basic_string_view/element_access/char/front_constexpr_neg.cc:
4945         Likewise.
4946         * testsuite/21_strings/basic_string_view/element_access/wchar_t/1.cc:
4947         Likewise.
4948         * testsuite/21_strings/basic_string_view/element_access/wchar_t/2.cc:
4949         Likewise.
4950         * testsuite/21_strings/basic_string_view/element_access/wchar_t/back_constexpr_neg.cc:
4951         Likewise.
4952         * testsuite/21_strings/basic_string_view/element_access/wchar_t/constexpr.cc:
4953         Likewise.
4954         * testsuite/21_strings/basic_string_view/element_access/wchar_t/constexpr_neg.cc:
4955         Likewise.
4956         * testsuite/21_strings/basic_string_view/element_access/wchar_t/empty.cc:
4957         Likewise.
4958         * testsuite/21_strings/basic_string_view/element_access/wchar_t/front_back.cc:
4959         Likewise.
4960         * testsuite/21_strings/basic_string_view/element_access/wchar_t/front_constexpr_neg.cc:
4961         Likewise.
4962         * testsuite/21_strings/basic_string_view/include.cc: Likewise.
4963         * testsuite/21_strings/basic_string_view/inserters/94051.cc:
4964         Likewise.
4965         * testsuite/21_strings/basic_string_view/inserters/char/1.cc:
4966         Likewise.
4967         * testsuite/21_strings/basic_string_view/inserters/char/2.cc:
4968         Likewise.
4969         * testsuite/21_strings/basic_string_view/inserters/char/3.cc:
4970         Likewise.
4971         * testsuite/21_strings/basic_string_view/inserters/pod/10081-out.cc:
4972         Likewise.
4973         * testsuite/21_strings/basic_string_view/inserters/wchar_t/1.cc:
4974         Likewise.
4975         * testsuite/21_strings/basic_string_view/inserters/wchar_t/2.cc:
4976         Likewise.
4977         * testsuite/21_strings/basic_string_view/inserters/wchar_t/3.cc:
4978         Likewise.
4979         * testsuite/21_strings/basic_string_view/literals/types-char8_t.cc:
4980         Likewise.
4981         * testsuite/21_strings/basic_string_view/literals/types.cc:
4982         Likewise.
4983         * testsuite/21_strings/basic_string_view/literals/values-char8_t.cc:
4984         Likewise.
4985         * testsuite/21_strings/basic_string_view/literals/values.cc:
4986         Likewise.
4987         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/char/1.cc:
4988         Likewise.
4989         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/wchar_t/1.cc:
4990         Likewise.
4991         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/char/1.cc:
4992         Likewise.
4993         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/wchar_t/1.cc:
4994         Likewise.
4995         * testsuite/21_strings/basic_string_view/modifiers/swap/char/1.cc:
4996         Likewise.
4997         * testsuite/21_strings/basic_string_view/modifiers/swap/wchar_t/1.cc:
4998         Likewise.
4999         * testsuite/21_strings/basic_string_view/operations/compare/char/1.cc:
5000         Likewise.
5001         * testsuite/21_strings/basic_string_view/operations/compare/char/13650.cc:
5002         Likewise.
5003         * testsuite/21_strings/basic_string_view/operations/compare/char/2.cc:
5004         Likewise.
5005         * testsuite/21_strings/basic_string_view/operations/compare/char/70483.cc:
5006         Likewise.
5007         * testsuite/21_strings/basic_string_view/operations/compare/char/nonnull.cc:
5008         Likewise.
5009         * testsuite/21_strings/basic_string_view/operations/compare/wchar_t/1.cc:
5010         Likewise.
5011         * testsuite/21_strings/basic_string_view/operations/compare/wchar_t/13650.cc:
5012         Likewise.
5013         * testsuite/21_strings/basic_string_view/operations/compare/wchar_t/2.cc:
5014         Likewise.
5015         * testsuite/21_strings/basic_string_view/operations/copy/char/1.cc:
5016         Likewise.
5017         * testsuite/21_strings/basic_string_view/operations/copy/char/2.cc:
5018         Likewise.
5019         * testsuite/21_strings/basic_string_view/operations/copy/wchar_t/1.cc:
5020         Likewise.
5021         * testsuite/21_strings/basic_string_view/operations/copy/wchar_t/2.cc:
5022         Likewise.
5023         * testsuite/21_strings/basic_string_view/operations/data/char/1.cc:
5024         Likewise.
5025         * testsuite/21_strings/basic_string_view/operations/data/wchar_t/1.cc:
5026         Likewise.
5027         * testsuite/21_strings/basic_string_view/operations/find/char/1.cc:
5028         Likewise.
5029         * testsuite/21_strings/basic_string_view/operations/find/char/2.cc:
5030         Likewise.
5031         * testsuite/21_strings/basic_string_view/operations/find/char/3.cc:
5032         Likewise.
5033         * testsuite/21_strings/basic_string_view/operations/find/char/4.cc:
5034         Likewise.
5035         * testsuite/21_strings/basic_string_view/operations/find/char/nonnull.cc:
5036         Likewise.
5037         * testsuite/21_strings/basic_string_view/operations/find/wchar_t/1.cc:
5038         Likewise.
5039         * testsuite/21_strings/basic_string_view/operations/find/wchar_t/2.cc:
5040         Likewise.
5041         * testsuite/21_strings/basic_string_view/operations/find/wchar_t/3.cc:
5042         Likewise.
5043         * testsuite/21_strings/basic_string_view/operations/find/wchar_t/4.cc:
5044         Likewise.
5045         * testsuite/21_strings/basic_string_view/operations/rfind/char/1.cc:
5046         Likewise.
5047         * testsuite/21_strings/basic_string_view/operations/rfind/char/2.cc:
5048         Likewise.
5049         * testsuite/21_strings/basic_string_view/operations/rfind/char/3.cc:
5050         Likewise.
5051         * testsuite/21_strings/basic_string_view/operations/rfind/char/nonnull.cc:
5052         Likewise.
5053         * testsuite/21_strings/basic_string_view/operations/rfind/wchar_t/1.cc:
5054         Likewise.
5055         * testsuite/21_strings/basic_string_view/operations/rfind/wchar_t/2.cc:
5056         Likewise.
5057         * testsuite/21_strings/basic_string_view/operations/rfind/wchar_t/3.cc:
5058         Likewise.
5059         * testsuite/21_strings/basic_string_view/operations/string_conversion/1.cc:
5060         Likewise.
5061         * testsuite/21_strings/basic_string_view/operations/substr/char/1.cc:
5062         Likewise.
5063         * testsuite/21_strings/basic_string_view/operations/substr/char/83511.cc:
5064         Likewise.
5065         * testsuite/21_strings/basic_string_view/operations/substr/wchar_t/1.cc:
5066         Likewise.
5067         * testsuite/21_strings/basic_string_view/operations/substr/wchar_t/83511.cc:
5068         Likewise.
5069         * testsuite/21_strings/basic_string_view/operators/char/2.cc:
5070         Likewise.
5071         * testsuite/21_strings/basic_string_view/operators/char/89446.cc:
5072         Likewise.
5073         * testsuite/21_strings/basic_string_view/operators/wchar_t/2.cc:
5074         Likewise.
5075         * testsuite/21_strings/basic_string_view/operators/wchar_t/89446.cc:
5076         Likewise.
5077         * testsuite/21_strings/basic_string_view/range_access/char/1.cc:
5078         Likewise.
5079         * testsuite/21_strings/basic_string_view/range_access/wchar_t/1.cc:
5080         Likewise.
5081         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/1.cc:
5082         Likewise.
5083         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char/1.cc:
5084         Likewise.
5085         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char16_t/1.cc:
5086         Likewise.
5087         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char32_t/1.cc:
5088         Likewise.
5089         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char8_t/1.cc:
5090         Likewise.
5091         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/wchar_t/1.cc:
5092         Likewise.
5093         * testsuite/21_strings/basic_string_view/requirements/traits_neg.cc:
5094         Likewise.
5095         * testsuite/21_strings/basic_string_view/requirements/typedefs.cc:
5096         Likewise.
5097         * testsuite/21_strings/basic_string_view/typedefs.cc: Likewise.
5098         * testsuite/21_strings/basic_string_view/types/1.cc: Likewise.
5099         * testsuite/21_strings/char_traits/requirements/char/99181.cc:
5100         Likewise.
5101         * testsuite/21_strings/char_traits/requirements/constexpr_functions_c++17.cc:
5102
5103 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
5104
5105         * testsuite/20_util/memory_resource/1.cc: Remove -std=gnu++17
5106         from dg-options directive.
5107         * testsuite/20_util/memory_resource/2.cc: Likewise.
5108         * testsuite/20_util/monotonic_buffer_resource/1.cc: Likewise.
5109         * testsuite/20_util/monotonic_buffer_resource/93208.cc:
5110         Likewise.
5111         * testsuite/20_util/monotonic_buffer_resource/allocate.cc:
5112         Likewise.
5113         * testsuite/20_util/monotonic_buffer_resource/deallocate.cc:
5114         Likewise.
5115         * testsuite/20_util/monotonic_buffer_resource/release.cc:
5116         Likewise.
5117         * testsuite/20_util/monotonic_buffer_resource/upstream_resource.cc:
5118         Likewise.
5119         * testsuite/20_util/polymorphic_allocator/1.cc: Likewise.
5120         * testsuite/20_util/polymorphic_allocator/construct_pair.cc:
5121         Likewise.
5122         * testsuite/20_util/polymorphic_allocator/resource.cc: Likewise.
5123         * testsuite/20_util/polymorphic_allocator/select.cc: Likewise.
5124         * testsuite/20_util/synchronized_pool_resource/allocate.cc:
5125         Likewise.
5126         * testsuite/20_util/synchronized_pool_resource/allocate_single.cc:
5127         Likewise.
5128         * testsuite/20_util/synchronized_pool_resource/cons.cc:
5129         Likewise.
5130         * testsuite/20_util/synchronized_pool_resource/cons_single.cc:
5131         Likewise.
5132         * testsuite/20_util/synchronized_pool_resource/is_equal.cc:
5133         Likewise.
5134         * testsuite/20_util/synchronized_pool_resource/multithreaded.cc:
5135         Likewise.
5136         * testsuite/20_util/synchronized_pool_resource/options.cc:
5137         Likewise.
5138         * testsuite/20_util/synchronized_pool_resource/release.cc:
5139         Likewise.
5140         * testsuite/20_util/synchronized_pool_resource/release_single.cc:
5141         Likewise.
5142         * testsuite/20_util/unsynchronized_pool_resource/allocate-max-chunks.cc:
5143         Likewise.
5144         * testsuite/20_util/unsynchronized_pool_resource/allocate.cc:
5145         Likewise.
5146         * testsuite/20_util/unsynchronized_pool_resource/cons.cc:
5147         Likewise.
5148         * testsuite/20_util/unsynchronized_pool_resource/is_equal.cc:
5149         Likewise.
5150         * testsuite/20_util/unsynchronized_pool_resource/options.cc:
5151         Likewise.
5152         * testsuite/20_util/unsynchronized_pool_resource/release.cc:
5153         Likewise.
5154         * testsuite/21_strings/basic_string/types/pmr_typedefs.cc:
5155         Likewise.
5156         * testsuite/23_containers/deque/types/pmr_typedefs.cc: Likewise.
5157         * testsuite/23_containers/deque/types/pmr_typedefs_debug.cc:
5158         Likewise.
5159         * testsuite/23_containers/forward_list/pmr_typedefs.cc:
5160         Likewise.
5161         * testsuite/23_containers/forward_list/pmr_typedefs_debug.cc:
5162         Likewise.
5163         * testsuite/23_containers/list/pmr_typedefs.cc: Likewise.
5164         * testsuite/23_containers/list/pmr_typedefs_debug.cc: Likewise.
5165         * testsuite/23_containers/map/pmr_typedefs.cc: Likewise.
5166         * testsuite/23_containers/map/pmr_typedefs_debug.cc: Likewise.
5167         * testsuite/23_containers/multimap/pmr_typedefs.cc: Likewise.
5168         * testsuite/23_containers/multimap/pmr_typedefs_debug.cc:
5169         Likewise.
5170         * testsuite/23_containers/multiset/pmr_typedefs.cc: Likewise.
5171         * testsuite/23_containers/multiset/pmr_typedefs_debug.cc:
5172         Likewise.
5173         * testsuite/23_containers/set/pmr_typedefs.cc: Likewise.
5174         * testsuite/23_containers/set/pmr_typedefs_debug.cc: Likewise.
5175         * testsuite/23_containers/unordered_map/pmr_typedefs.cc:
5176         Likewise.
5177         * testsuite/23_containers/unordered_map/pmr_typedefs_debug.cc:
5178         Likewise.
5179         * testsuite/23_containers/unordered_multimap/pmr_typedefs.cc:
5180         Likewise.
5181         * testsuite/23_containers/unordered_multimap/pmr_typedefs_debug.cc:
5182         Likewise.
5183         * testsuite/23_containers/unordered_multiset/pmr_typedefs.cc:
5184         Likewise.
5185         * testsuite/23_containers/unordered_multiset/pmr_typedefs_debug.cc:
5186         Likewise.
5187         * testsuite/23_containers/unordered_set/pmr_typedefs.cc:
5188         Likewise.
5189         * testsuite/23_containers/unordered_set/pmr_typedefs_debug.cc:
5190         Likewise.
5191         * testsuite/23_containers/vector/pmr_typedefs.cc: Likewise.
5192         * testsuite/23_containers/vector/types/pmr_typedefs_debug.cc:
5193         Likewise.
5194         * testsuite/28_regex/match_results/pmr_typedefs.cc: Likewise.
5195
5196 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
5197
5198         * testsuite/29_atomics/atomic/69769.cc: Remove -std=gnu++17 from
5199         dg-options.
5200         * testsuite/29_atomics/atomic/is_always_lock_free.cc:
5201         * testsuite/29_atomics/atomic/requirements/typedefs.cc:
5202         * testsuite/29_atomics/atomic_integral/is_always_lock_free.cc:
5203         * testsuite/29_atomics/atomic_integral/requirements/typedefs.cc:
5204         * testsuite/30_threads/lock_guard/cons/deduction.cc: Likewise.
5205         * testsuite/30_threads/scoped_lock/cons/1.cc: Likewise.
5206         * testsuite/30_threads/scoped_lock/cons/deduction.cc: Likewise.
5207         * testsuite/30_threads/scoped_lock/requirements/explicit_instantiation.cc:
5208         Likewise.
5209         * testsuite/30_threads/scoped_lock/requirements/typedefs.cc:
5210         Likewise.
5211         * testsuite/30_threads/shared_lock/70766.cc: Likewise.
5212         * testsuite/30_threads/shared_mutex/cons/1.cc: Likewise.
5213         * testsuite/30_threads/shared_mutex/cons/assign_neg.cc:
5214         Likewise.
5215         * testsuite/30_threads/shared_mutex/cons/copy_neg.cc: Likewise.
5216         * testsuite/30_threads/shared_mutex/requirements/standard_layout.cc:
5217         Likewise.
5218         * testsuite/30_threads/shared_mutex/try_lock/1.cc: Likewise.
5219         * testsuite/30_threads/shared_mutex/try_lock/2.cc: Likewise.
5220         * testsuite/30_threads/shared_mutex/unlock/1.cc: Likewise.
5221         * testsuite/30_threads/unique_lock/cons/deduction.cc: Likewise.
5222
5223 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
5224
5225         * testsuite/20_util/any/assign/1.cc: Remove -std=gnu++17 from
5226         dg-options directive.
5227         * testsuite/20_util/any/assign/2.cc: Likewise.
5228         * testsuite/20_util/any/assign/emplace.cc: Likewise.
5229         * testsuite/20_util/any/assign/exception.cc: Likewise.
5230         * testsuite/20_util/any/assign/self.cc: Likewise.
5231         * testsuite/20_util/any/cons/1.cc: Likewise.
5232         * testsuite/20_util/any/cons/2.cc: Likewise.
5233         * testsuite/20_util/any/cons/90415.cc: Likewise.
5234         * testsuite/20_util/any/cons/92156.cc: Likewise.
5235         * testsuite/20_util/any/cons/aligned.cc: Likewise.
5236         * testsuite/20_util/any/cons/explicit.cc: Likewise.
5237         * testsuite/20_util/any/cons/in_place.cc: Likewise.
5238         * testsuite/20_util/any/cons/nontrivial.cc: Likewise.
5239         * testsuite/20_util/any/make_any.cc: Likewise.
5240         * testsuite/20_util/any/misc/any_cast.cc: Likewise.
5241         * testsuite/20_util/any/misc/any_cast_neg.cc: Likewise.
5242         * testsuite/20_util/any/misc/any_cast_no_rtti.cc: Likewise.
5243         * testsuite/20_util/any/misc/swap.cc: Likewise.
5244         * testsuite/20_util/any/modifiers/1.cc: Likewise.
5245         * testsuite/20_util/any/modifiers/83658.cc: Likewise.
5246         * testsuite/20_util/any/modifiers/92156.cc: Likewise.
5247         * testsuite/20_util/any/observers/type.cc: Likewise.
5248         * testsuite/20_util/any/requirements.cc: Likewise.
5249         * testsuite/20_util/any/typedefs.cc: Likewise.
5250         * testsuite/20_util/optional/77288.cc: Likewise.
5251         * testsuite/20_util/optional/84601.cc: Likewise.
5252         * testsuite/20_util/optional/assignment/1.cc: Likewise.
5253         * testsuite/20_util/optional/assignment/2.cc: Likewise.
5254         * testsuite/20_util/optional/assignment/3.cc: Likewise.
5255         * testsuite/20_util/optional/assignment/4.cc: Likewise.
5256         * testsuite/20_util/optional/assignment/5.cc: Likewise.
5257         * testsuite/20_util/optional/assignment/6.cc: Likewise.
5258         * testsuite/20_util/optional/assignment/7.cc: Likewise.
5259         * testsuite/20_util/optional/assignment/8.cc: Likewise.
5260         * testsuite/20_util/optional/assignment/9.cc: Likewise.
5261         * testsuite/20_util/optional/bad_access.cc: Likewise.
5262         * testsuite/20_util/optional/cons/77727.cc: Likewise.
5263         * testsuite/20_util/optional/cons/85642.cc: Likewise.
5264         * testsuite/20_util/optional/cons/copy.cc: Likewise.
5265         * testsuite/20_util/optional/cons/deduction.cc: Likewise.
5266         * testsuite/20_util/optional/cons/default.cc: Likewise.
5267         * testsuite/20_util/optional/cons/move.cc: Likewise.
5268         * testsuite/20_util/optional/cons/trivial.cc: Likewise.
5269         * testsuite/20_util/optional/cons/value.cc: Likewise.
5270         * testsuite/20_util/optional/cons/value_neg.cc: Likewise.
5271         * testsuite/20_util/optional/constexpr/cons/default.cc:
5272         Likewise.
5273         * testsuite/20_util/optional/constexpr/cons/value.cc: Likewise.
5274         * testsuite/20_util/optional/constexpr/in_place.cc: Likewise.
5275         * testsuite/20_util/optional/constexpr/make_optional.cc:
5276         Likewise.
5277         * testsuite/20_util/optional/constexpr/nullopt.cc: Likewise.
5278         * testsuite/20_util/optional/constexpr/observers/1.cc: Likewise.
5279         * testsuite/20_util/optional/constexpr/observers/2.cc: Likewise.
5280         * testsuite/20_util/optional/constexpr/observers/3.cc: Likewise.
5281         * testsuite/20_util/optional/constexpr/observers/4.cc: Likewise.
5282         * testsuite/20_util/optional/constexpr/observers/5.cc: Likewise.
5283         * testsuite/20_util/optional/constexpr/relops/1.cc: Likewise.
5284         * testsuite/20_util/optional/constexpr/relops/2.cc: Likewise.
5285         * testsuite/20_util/optional/constexpr/relops/3.cc: Likewise.
5286         * testsuite/20_util/optional/constexpr/relops/4.cc: Likewise.
5287         * testsuite/20_util/optional/constexpr/relops/5.cc: Likewise.
5288         * testsuite/20_util/optional/constexpr/relops/6.cc: Likewise.
5289         * testsuite/20_util/optional/hash.cc: Likewise.
5290         * testsuite/20_util/optional/in_place.cc: Likewise.
5291         * testsuite/20_util/optional/make_optional.cc: Likewise.
5292         * testsuite/20_util/optional/nullopt.cc: Likewise.
5293         * testsuite/20_util/optional/observers/1.cc: Likewise.
5294         * testsuite/20_util/optional/observers/2.cc: Likewise.
5295         * testsuite/20_util/optional/observers/3.cc: Likewise.
5296         * testsuite/20_util/optional/observers/4.cc: Likewise.
5297         * testsuite/20_util/optional/observers/5.cc: Likewise.
5298         * testsuite/20_util/optional/observers/6.cc: Likewise.
5299         * testsuite/20_util/optional/relops/1.cc: Likewise.
5300         * testsuite/20_util/optional/relops/2.cc: Likewise.
5301         * testsuite/20_util/optional/relops/3.cc: Likewise.
5302         * testsuite/20_util/optional/relops/4.cc: Likewise.
5303         * testsuite/20_util/optional/relops/5.cc: Likewise.
5304         * testsuite/20_util/optional/relops/6.cc: Likewise.
5305         * testsuite/20_util/optional/relops/7.cc: Likewise.
5306         * testsuite/20_util/optional/requirements.cc: Likewise.
5307         * testsuite/20_util/optional/swap/1.cc: Likewise.
5308         * testsuite/20_util/optional/swap/2.cc: Likewise.
5309         * testsuite/20_util/optional/typedefs.cc: Likewise.
5310         * testsuite/20_util/variant/80165.cc: Likewise.
5311         * testsuite/20_util/variant/85183.cc: Likewise.
5312         * testsuite/20_util/variant/86874.cc: Likewise.
5313         * testsuite/20_util/variant/87431.cc: Likewise.
5314         * testsuite/20_util/variant/87619.cc: Likewise.
5315         * testsuite/20_util/variant/91807.cc: Likewise.
5316         * testsuite/20_util/variant/any.cc: Likewise.
5317         * testsuite/20_util/variant/compile.cc: Likewise.
5318         * testsuite/20_util/variant/deduction.cc: Likewise.
5319         * testsuite/20_util/variant/exception_safety.cc: Likewise.
5320         * testsuite/20_util/variant/hash.cc: Likewise.
5321         * testsuite/20_util/variant/index_type.cc: Likewise.
5322         * testsuite/20_util/variant/relops/89851.cc: Likewise.
5323         * testsuite/20_util/variant/relops/90008.cc: Likewise.
5324         * testsuite/20_util/variant/run.cc: Likewise.
5325         * testsuite/20_util/variant/visit.cc: Likewise.
5326
5327 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
5328
5329         * testsuite/27_io/basic_filebuf/open/char/path.cc: Remove
5330         -std=gnu++17 from dg-options directive.
5331         * testsuite/27_io/basic_fstream/cons/char/path.cc: Likewise.
5332         * testsuite/27_io/basic_fstream/open/char/path.cc: Likewise.
5333         * testsuite/27_io/basic_ifstream/cons/char/path.cc: Likewise.
5334         * testsuite/27_io/basic_ifstream/open/char/path.cc: Likewise.
5335         * testsuite/27_io/basic_ofstream/cons/char/path.cc: Likewise.
5336         * testsuite/27_io/basic_ofstream/open/char/path.cc: Likewise.
5337         * testsuite/27_io/filesystem/directory_entry/86597.cc: Likewise.
5338         * testsuite/27_io/filesystem/directory_entry/lwg3171.cc:
5339         Likewise.
5340         * testsuite/27_io/filesystem/file_status/1.cc: Likewise.
5341         * testsuite/27_io/filesystem/filesystem_error/cons.cc: Likewise.
5342         * testsuite/27_io/filesystem/filesystem_error/copy.cc: Likewise.
5343         * testsuite/27_io/filesystem/iterators/91067.cc: Likewise.
5344         * testsuite/27_io/filesystem/iterators/caching.cc: Likewise.
5345         * testsuite/27_io/filesystem/iterators/directory_iterator.cc:
5346         Likewise.
5347         * testsuite/27_io/filesystem/iterators/pop.cc: Likewise.
5348         * testsuite/27_io/filesystem/iterators/recursion_pending.cc:
5349         Likewise.
5350         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
5351         Likewise.
5352         * testsuite/27_io/filesystem/operations/absolute.cc: Likewise.
5353         * testsuite/27_io/filesystem/operations/all.cc: Likewise.
5354         * testsuite/27_io/filesystem/operations/canonical.cc: Likewise.
5355         * testsuite/27_io/filesystem/operations/copy.cc: Likewise.
5356         * testsuite/27_io/filesystem/operations/copy_file.cc: Likewise.
5357         * testsuite/27_io/filesystem/operations/create_directories.cc:
5358         Likewise.
5359         * testsuite/27_io/filesystem/operations/create_directory.cc:
5360         Likewise.
5361         * testsuite/27_io/filesystem/operations/create_symlink.cc:
5362         Likewise.
5363         * testsuite/27_io/filesystem/operations/current_path.cc:
5364         Likewise.
5365         * testsuite/27_io/filesystem/operations/equivalent.cc: Likewise.
5366         * testsuite/27_io/filesystem/operations/exists.cc: Likewise.
5367         * testsuite/27_io/filesystem/operations/file_size.cc: Likewise.
5368         * testsuite/27_io/filesystem/operations/is_empty.cc: Likewise.
5369         * testsuite/27_io/filesystem/operations/last_write_time.cc:
5370         Likewise.
5371         * testsuite/27_io/filesystem/operations/permissions.cc:
5372         Likewise.
5373         * testsuite/27_io/filesystem/operations/proximate.cc: Likewise.
5374         * testsuite/27_io/filesystem/operations/read_symlink.cc:
5375         Likewise.
5376         * testsuite/27_io/filesystem/operations/relative.cc: Likewise.
5377         * testsuite/27_io/filesystem/operations/remove.cc: Likewise.
5378         * testsuite/27_io/filesystem/operations/remove_all.cc: Likewise.
5379         * testsuite/27_io/filesystem/operations/rename.cc: Likewise.
5380         * testsuite/27_io/filesystem/operations/resize_file.cc:
5381         Likewise.
5382         * testsuite/27_io/filesystem/operations/space.cc: Likewise.
5383         * testsuite/27_io/filesystem/operations/status.cc: Likewise.
5384         * testsuite/27_io/filesystem/operations/symlink_status.cc:
5385         Likewise.
5386         * testsuite/27_io/filesystem/operations/temp_directory_path.cc:
5387         Likewise.
5388         * testsuite/27_io/filesystem/operations/weakly_canonical.cc:
5389         Likewise.
5390         * testsuite/27_io/filesystem/path/append/path.cc: Likewise.
5391         * testsuite/27_io/filesystem/path/append/source.cc: Likewise.
5392         * testsuite/27_io/filesystem/path/assign/assign.cc: Likewise.
5393         * testsuite/27_io/filesystem/path/assign/copy.cc: Likewise.
5394         * testsuite/27_io/filesystem/path/compare/compare.cc: Likewise.
5395         * testsuite/27_io/filesystem/path/compare/lwg2936.cc: Likewise.
5396         * testsuite/27_io/filesystem/path/compare/path.cc: Likewise.
5397         * testsuite/27_io/filesystem/path/compare/strings.cc: Likewise.
5398         * testsuite/27_io/filesystem/path/concat/92853.cc: Likewise.
5399         * testsuite/27_io/filesystem/path/concat/94063.cc: Likewise.
5400         * testsuite/27_io/filesystem/path/concat/path.cc: Likewise.
5401         * testsuite/27_io/filesystem/path/concat/strings.cc: Likewise.
5402         * testsuite/27_io/filesystem/path/construct/80762.cc: Likewise.
5403         * testsuite/27_io/filesystem/path/construct/90281.cc: Likewise.
5404         * testsuite/27_io/filesystem/path/construct/90634.cc: Likewise.
5405         * testsuite/27_io/filesystem/path/construct/copy.cc: Likewise.
5406         * testsuite/27_io/filesystem/path/construct/default.cc:
5407         Likewise.
5408         * testsuite/27_io/filesystem/path/construct/format.cc: Likewise.
5409         * testsuite/27_io/filesystem/path/construct/locale.cc: Likewise.
5410         * testsuite/27_io/filesystem/path/construct/range.cc: Likewise.
5411         * testsuite/27_io/filesystem/path/construct/string_view.cc:
5412         Likewise.
5413         * testsuite/27_io/filesystem/path/decompose/extension.cc:
5414         Likewise.
5415         * testsuite/27_io/filesystem/path/decompose/filename.cc:
5416         Likewise.
5417         * testsuite/27_io/filesystem/path/decompose/parent_path.cc:
5418         Likewise.
5419         * testsuite/27_io/filesystem/path/decompose/relative_path.cc:
5420         Likewise.
5421         * testsuite/27_io/filesystem/path/decompose/root_directory.cc:
5422         Likewise.
5423         * testsuite/27_io/filesystem/path/decompose/root_name.cc:
5424         Likewise.
5425         * testsuite/27_io/filesystem/path/decompose/root_path.cc:
5426         Likewise.
5427         * testsuite/27_io/filesystem/path/decompose/stem.cc: Likewise.
5428         * testsuite/27_io/filesystem/path/factory/u8path-char8_t.cc:
5429         Likewise.
5430         * testsuite/27_io/filesystem/path/factory/u8path.cc: Likewise.
5431         * testsuite/27_io/filesystem/path/generation/normal.cc:
5432         Likewise.
5433         * testsuite/27_io/filesystem/path/generation/normal2.cc:
5434         Likewise.
5435         * testsuite/27_io/filesystem/path/generation/proximate.cc:
5436         Likewise.
5437         * testsuite/27_io/filesystem/path/generation/relative.cc:
5438         Likewise.
5439         * testsuite/27_io/filesystem/path/generic/94242.cc: Likewise.
5440         * testsuite/27_io/filesystem/path/generic/generic_string.cc:
5441         Likewise.
5442         * testsuite/27_io/filesystem/path/generic/utf.cc: Likewise.
5443         * testsuite/27_io/filesystem/path/generic/wchar_t.cc: Likewise.
5444         * testsuite/27_io/filesystem/path/io/dr2989.cc: Likewise.
5445         * testsuite/27_io/filesystem/path/itr/components.cc: Likewise.
5446         * testsuite/27_io/filesystem/path/itr/traversal.cc: Likewise.
5447         * testsuite/27_io/filesystem/path/modifiers/clear.cc: Likewise.
5448         * testsuite/27_io/filesystem/path/modifiers/make_preferred.cc:
5449         Likewise.
5450         * testsuite/27_io/filesystem/path/modifiers/remove_filename.cc:
5451         Likewise.
5452         * testsuite/27_io/filesystem/path/modifiers/replace_extension.cc:
5453         Likewise.
5454         * testsuite/27_io/filesystem/path/modifiers/replace_filename.cc:
5455         Likewise.
5456         * testsuite/27_io/filesystem/path/modifiers/swap.cc: Likewise.
5457         * testsuite/27_io/filesystem/path/native/alloc.cc: Likewise.
5458         * testsuite/27_io/filesystem/path/native/string-char8_t.cc:
5459         Likewise.
5460         * testsuite/27_io/filesystem/path/native/string.cc: Likewise.
5461         * testsuite/27_io/filesystem/path/nonmember/append.cc: Likewise.
5462         * testsuite/27_io/filesystem/path/nonmember/cmp.cc: Likewise.
5463         * testsuite/27_io/filesystem/path/nonmember/hash_value.cc:
5464         Likewise.
5465         * testsuite/27_io/filesystem/path/query/empty.cc: Likewise.
5466         * testsuite/27_io/filesystem/path/query/empty_neg.cc:
5467         * testsuite/27_io/filesystem/path/query/has_extension.cc:
5468         Likewise.
5469         * testsuite/27_io/filesystem/path/query/has_filename.cc:
5470         Likewise.
5471         * testsuite/27_io/filesystem/path/query/has_parent_path.cc:
5472         Likewise.
5473         * testsuite/27_io/filesystem/path/query/has_relative_path.cc:
5474         Likewise.
5475         * testsuite/27_io/filesystem/path/query/has_root_directory.cc:
5476         Likewise.
5477         * testsuite/27_io/filesystem/path/query/has_root_name.cc:
5478         Likewise.
5479         * testsuite/27_io/filesystem/path/query/has_root_path.cc:
5480         Likewise.
5481         * testsuite/27_io/filesystem/path/query/has_stem.cc: Likewise.
5482         * testsuite/27_io/filesystem/path/query/is_absolute.cc:
5483         Likewise.
5484         * testsuite/27_io/filesystem/path/query/is_relative.cc:
5485         Likewise.
5486         * testsuite/experimental/filesystem/path/construct/string_view.cc:
5487         Likewise.
5488
5489 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
5490
5491         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc:
5492         Remove -std=gnu++17 from dg-options.
5493         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc:
5494         Likewise.
5495         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_fill_destroy.cc:
5496         Likewise.
5497         * testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc:
5498         Likewise.
5499         * testsuite/25_algorithms/pstl/alg_merge/merge.cc: Likewise.
5500         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc:
5501         Likewise.
5502         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc:
5503         Likewise.
5504         * testsuite/25_algorithms/pstl/alg_modifying_operations/fill.cc:
5505         Likewise.
5506         * testsuite/25_algorithms/pstl/alg_modifying_operations/generate.cc:
5507         Likewise.
5508         * testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc:
5509         Likewise.
5510         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc:
5511         Likewise.
5512         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc:
5513         Likewise.
5514         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc:
5515         Likewise.
5516         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove_copy.cc:
5517         Likewise.
5518         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace.cc:
5519         Likewise.
5520         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc:
5521         Likewise.
5522         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc:
5523         Likewise.
5524         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc:
5525         Likewise.
5526         * testsuite/25_algorithms/pstl/alg_modifying_operations/swap_ranges.cc:
5527         Likewise.
5528         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_binary.cc:
5529         Likewise.
5530         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_unary.cc:
5531         Likewise.
5532         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc:
5533         Likewise.
5534         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc:
5535         Likewise.
5536         * testsuite/25_algorithms/pstl/alg_nonmodifying/adjacent_find.cc:
5537         Likewise.
5538         * testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc:
5539         Likewise.
5540         * testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc:
5541         Likewise.
5542         * testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc:
5543         Likewise.
5544         * testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc:
5545         Likewise.
5546         * testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc:
5547         Likewise.
5548         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc:
5549         Likewise.
5550         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc:
5551         Likewise.
5552         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc:
5553         Likewise.
5554         * testsuite/25_algorithms/pstl/alg_nonmodifying/for_each.cc:
5555         Likewise.
5556         * testsuite/25_algorithms/pstl/alg_nonmodifying/mismatch.cc:
5557         Likewise.
5558         * testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc:
5559         Likewise.
5560         * testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc:
5561         Likewise.
5562         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc:
5563         Likewise.
5564         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc:
5565         Likewise.
5566         * testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc:
5567         Likewise.
5568         * testsuite/25_algorithms/pstl/alg_sorting/includes.cc:
5569         Likewise.
5570         * testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: Likewise.
5571         * testsuite/25_algorithms/pstl/alg_sorting/is_sorted.cc:
5572         Likewise.
5573         * testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc:
5574         Likewise.
5575         * testsuite/25_algorithms/pstl/alg_sorting/minmax_element.cc:
5576         Likewise.
5577         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc:
5578         Likewise.
5579         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc:
5580         Likewise.
5581         * testsuite/25_algorithms/pstl/alg_sorting/set.cc: Likewise.
5582         * testsuite/25_algorithms/pstl/alg_sorting/sort.cc: Likewise.
5583         * testsuite/25_algorithms/pstl/feature_test-2.cc: Likewise.
5584         * testsuite/25_algorithms/pstl/feature_test-3.cc: Likewise.
5585         * testsuite/25_algorithms/pstl/feature_test-4.cc: Likewise.
5586         * testsuite/25_algorithms/pstl/feature_test-5.cc: Likewise.
5587         * testsuite/25_algorithms/pstl/feature_test.cc: Likewise.
5588         * testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc:
5589         Likewise.
5590         * testsuite/26_numerics/pstl/numeric_ops/reduce.cc: Likewise.
5591         * testsuite/26_numerics/pstl/numeric_ops/scan.cc: Likewise.
5592         * testsuite/26_numerics/pstl/numeric_ops/transform_reduce.cc:
5593         Likewise.
5594         * testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc:
5595         Likewise.
5596
5597 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
5598
5599         * testsuite/20_util/scoped_allocator/69293_neg.cc: Add dg-error
5600         for additional errors in C++20.
5601         * testsuite/20_util/specialized_algorithms/memory_management_tools/destroy_neg.cc:
5602         Likewise.
5603         * testsuite/20_util/uses_allocator/69293_neg.cc: Likewise.
5604         * testsuite/27_io/filesystem/path/io/dr2989.cc: Likewise.
5605
5606 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
5607
5608         * testsuite/20_util/variant/compile.cc: Rename 'any' to avoid
5609         clash with std::any.
5610
5611 2021-05-07  Jonathan Wakely  <jwakely@redhat.com>
5612
5613         * include/std/istream (__rvalue_stream_extraction_t): Replace
5614         use of __rval_streamable.
5615         * include/std/ostream (__rvalue_stream_insertion_t): Likewise.
5616         (__rval_streamable): Remove.
5617         (_Require_derived_from_ios_base, __derived_from_ios_base): New
5618         helper for checking constraints.
5619         * testsuite/27_io/basic_istream/extractors_other/char/4.cc: Fix
5620         reference to the wrong subclause of the standard.
5621         * testsuite/27_io/basic_istream/extractors_other/wchar_t/4.cc:
5622         Likewise.
5623         * testsuite/27_io/basic_ostream/inserters_other/char/6.cc:
5624         Likewise.
5625         * testsuite/27_io/basic_ostream/inserters_other/wchar_t/6.cc:
5626         Likewise.
5627         * testsuite/27_io/basic_ostream/inserters_other/char/99692.cc:
5628         New test.
5629         * testsuite/27_io/filesystem/path/io/dr2989.cc: Adjust pruned
5630         errors.
5631
5632 2021-05-06  Jonathan Wakely  <jwakely@redhat.com>
5633
5634         * include/bits/stl_algobase.h (__copy_move, __copy_move_backward):
5635         Improve static_assert messages.
5636         * testsuite/25_algorithms/copy/58982.cc: Adjust expected output.
5637         * testsuite/25_algorithms/copy_n/58982.cc: Likewise.
5638
5639 2021-05-06  Patrick Palka  <ppalka@redhat.com>
5640
5641         * include/std/ranges (filter_view::_Iterator::base): Make the
5642         const& overload unconstrained and return a const reference as
5643         per LWG 3533.  Make unconditionally noexcept.
5644         (transform_view::_Iterator::base): Likewise.
5645         (elements_view::_Iterator::base): Likewise.
5646
5647 2021-05-06  Patrick Palka  <ppalka@redhat.com>
5648
5649         * include/bits/stl_iterator.h (move_iterator::base): Make the
5650         const& overload unconstrained and return a const reference as
5651         per LWG 3391.  Make unconditionally noexcept.
5652         (counted_iterator::base): Likewise.
5653         * testsuite/24_iterators/move_iterator/lwg3391.cc: New test.
5654         * testsuite/24_iterators/move_iterator/move_only.cc: Adjust
5655         has_member_base concept to decay-copy the result of base().
5656
5657 2021-05-06  Jonathan Wakely  <jwakely@redhat.com>
5658
5659         * include/std/type_traits (remove_cvref_t): Define in terms of
5660         remove_cvref.
5661         * testsuite/20_util/remove_cvref/value.cc: Check alias.
5662
5663 2021-05-06  Jonathan Wakely  <jwakely@redhat.com>
5664
5665         Revert:
5666         2021-05-05  Jonathan Wakely  <jwakely@redhat.com>
5667
5668         * include/std/charconv (__from_chars_alnum): Pass unsigned
5669         char to std::isdigit.
5670
5671 2021-05-05  Patrick Palka  <ppalka@redhat.com>
5672
5673         * include/bits/ranges_util.h (enable_borrowed_range<subrange>):
5674         Remove constraints on this partial specialization.
5675         * include/std/ranges (enable_borrowed_range<iota_view>):
5676         Likewise.
5677
5678 2021-05-05  Patrick Palka  <ppalka@redhat.com>
5679
5680         * include/std/ranges (transform_view::_Iterator::iter_swap):
5681         Remove as per LWG 3520.
5682         (join_view::_Iterator::iter_swap): Add indirectly_swappable
5683         constraint as per LWG 3517.
5684
5685 2021-05-05  Jonathan Wakely  <jwakely@redhat.com>
5686
5687         * testsuite/20_util/function_objects/invoke/3.cc: Check feature
5688         test macro.
5689         * testsuite/20_util/function_objects/invoke/version.cc: New test.
5690
5691 2021-05-05  Jonathan Wakely  <jwakely@redhat.com>
5692
5693         * include/std/charconv (__from_chars_alnum): Pass unsigned
5694         char to std::isdigit.
5695
5696 2021-05-05  Corentin Gay  <gay@adacore.com>
5697
5698         * acinclude.m4: Add VxWorks-specific case for the
5699         configuration of ctypes.
5700         * configure: Regenerate.
5701         * config/locale/vxworks/ctype_members.cc: Add VxWorks-specific
5702         version.
5703         * config/os/vxworks/ctype_base.h: Adjust for VxWorks7+.
5704         * config/os/vxworks/ctype_configure_char.cc: Likewise.
5705         * config/os/vxworks/ctype_inline.h: Likewise.
5706         * testsuite/28_regex/traits/char/isctype.cc: Defines
5707         NEWLINE_IN_CLASS_BLANK if the target is VxWorks.
5708         * testsuite/28_regex/traits/wchar_t/isctype.cc: Likewise.
5709
5710 2021-05-04  Jonathan Wakely  <jwakely@redhat.com>
5711
5712         * include/std/future (promise::set_value): Check for existence
5713         of shared state before dereferncing it.
5714         (promise::set_exception, promise::set_value_at_thread_exit)
5715         (promise::set_exception_at_thread_exit): Likewise.
5716         (promise<R&>::set_value, promise<R&>::set_exception)
5717         (promise<R&>::set_value_at_thread_exit)
5718         (promise<R&>::set_exception_at_thread_exit): Likewise.
5719         (promise<void>::set_value, promise<void>::set_exception)
5720         (promise<void>::set_value_at_thread_exit)
5721         (promise<void>::set_exception_at_thread_exit): Likewise.
5722         * testsuite/30_threads/promise/members/at_thread_exit2.cc:
5723         Remove unused variable.
5724
5725 2021-05-04  Jonathan Wakely  <jwakely@redhat.com>
5726
5727         * include/bits/basic_string.h (basic_string(const CharT*, const A&)):
5728         Do not do arithmetic on null pointer.
5729
5730 2021-05-04  Jonathan Wakely  <jwakely@redhat.com>
5731
5732         * include/ext/pb_ds/detail/cc_hash_table_map_/cc_ht_map_.hpp
5733         (find_key_pointer(key_const_reference, false_type))
5734         (find_key_pointer(key_const_reference, true_type)): Do not
5735         dereference null pointer.
5736
5737 2021-05-04  Jonathan Wakely  <jwakely@redhat.com>
5738
5739         * testsuite/20_util/from_chars/3.cc: Use unsigned type to avoid
5740         overflow.
5741         * testsuite/24_iterators/reverse_iterator/2.cc: Do not add
5742         non-zero value to null pointer.
5743         * testsuite/25_algorithms/copy_backward/move_iterators/69478.cc:
5744         Use past-the-end iterator for result.
5745         * testsuite/25_algorithms/move_backward/69478.cc: Likewise.
5746         * testsuite/25_algorithms/move_backward/93872.cc: Likewise.
5747
5748 2021-05-04  Jonathan Wakely  <jwakely@redhat.com>
5749
5750         PR libstdc++/100384
5751         * include/std/variant (__get_t): New alias template yielding the
5752         return type of std::get<N> on a variant.
5753         (__visit_result_t): New alias template yielding the result of
5754         std::visit.
5755         (__same_types): Move into namespace __detail::__variant.
5756         (__check_visitor_results): Likewise. Use __invoke_result_t and
5757         __get_t.
5758         (__check_visitor_result): Remove.
5759         (visit): Use __visit_result_t for return type.
5760         * testsuite/20_util/variant/100384.cc: New test.
5761
5762 2021-05-04  Jonathan Wakely  <jwakely@redhat.com>
5763
5764         * acinclude.m4 (GLIBCXX_ENABLE_INT128_FLOAT128): Remove
5765         checks for __int128 and rename to GLIBCXX_ENABLE_FLOAT128.
5766         * config.h.in: Regenerate.
5767         * configure: Regenerate.
5768         * configure.ac: Adjust to use GLIBCXX_ENABLE_FLOAT128.
5769         * include/bits/random.h (_Select_uint_least_t<s, 1>):
5770         Use __SIZEOF_INT128__ to decide whether to use __int128.
5771         * include/std/charconv (__to_chars_unsigned_type): Likewise.
5772
5773 2021-05-03  Gerald Pfeifer  <gerald@pfeifer.com>
5774
5775         * doc/xml/manual/ctype.xml: Move unix.org reference to https.
5776         * doc/html/manual/facets.html: Regenerate.
5777
5778 2021-04-30  Patrick Palka  <ppalka@redhat.com>
5779
5780         * include/std/ranges (__detail::__non_propating_cache): Define
5781         as per P2328.
5782         (join_view): Remove constraints on the value and reference types
5783         of the wrapped iterator type as per P2328.
5784         (join_view::_Iterator::_M_satisfy): Adjust as per P2328.
5785         (join_view::_Iterator::operator++): Likewise.
5786         (join_view::_M_inner): Use __non_propating_cache as per P2328.
5787         Remove now-redundant use of __maybe_present_t.
5788         * testsuite/std/ranges/adaptors/join.cc: Include <array>.
5789         (test10): New test.
5790
5791 2021-04-30  Jonathan Wakely  <jwakely@redhat.com>
5792
5793         * include/bits/basic_string.h (__cpp_lib_constexpr_string):
5794         Only define for C++17 and later.
5795         * include/std/version (__cpp_lib_semaphore): Fix condition
5796         to match the one in <semaphore>.
5797
5798 2021-04-30  Jonathan Wakely  <jwakely@redhat.com>
5799
5800         * acinclude.m4 (GLIBCXX_CHECK_INT64_T): Delete.
5801         * config.h.in: Regenerate.
5802         * configure: Regenerate.
5803         * configure.ac: Do not use GLIBCXX_CHECK_INT64_T.
5804         * include/bits/postypes.h: Remove include of <stdint.h> and
5805         definition/undefinition of the __STDC_LIMIT_MACROS and
5806         __STDC_CONSTANT_MACROS macros.
5807         (streamoff): Use __INT64_TYPE__ if defined.
5808
5809 2021-04-30  Patrick Palka  <ppalka@redhat.com>
5810
5811         * include/std/ranges (split_view::_InnerIter::operator++):
5812         Depend on _Base instead of _Vp directly, as per LWG 3532.
5813
5814 2021-04-30  Patrick Palka  <ppalka@redhat.com>
5815
5816         * include/bits/ranges_util.h (subrange::subrange): Avoid
5817         list-initialization in delegating constructor.
5818         * include/std/ranges (single_view): Replace implicit guide
5819         with explicit deduction guide that decays its argument.
5820         (_Single::operator()): Avoid CTAD when constructing the
5821         single_view object.
5822         (_Iota::operator()): Avoid list-initialization.
5823         (__detail::__can_filter_view, _Filter::operator()): Likewise.
5824         (__detail::__can_transform_view, _Transform::operator()): Likewise.
5825         (take_view::begin): Likewise.
5826         (__detail::__can_take_view, _Take::operator()): Likewise.
5827         (__detail::__can_take_while_view, _TakeWhile::operator()): Likewise.
5828         (__detail::__can_drop_view, _Drop::operator()): Likewise.
5829         (__detail::__can_drop_while_view, _DropWhile::operator()): Likewise.
5830         (split_view::split_view): Use views::single when initializing
5831         _M_pattern.
5832         (__detail::__can_split_view, _Split::operator()): Avoid
5833         list-initialization.
5834         (_Counted::operator()): Likewise.
5835         * testsuite/std/ranges/p2367.cc: New test.
5836
5837 2021-04-30  Jonathan Wakely  <jwakely@redhat.com>
5838
5839         PR libstdc++/60497
5840         * include/bits/basic_ios.tcc (basic_ios::copyfmt): use
5841         std::addressof.
5842         * include/bits/basic_string.tcc (basic_string::swap)
5843         (basic_string::assign): Likewise.
5844         * include/bits/deque.tcc (deque::operator=(const deque&)):
5845         Likewise.
5846         * include/bits/stl_tree.h (_Rb_tree::operator=(const * _Rb_tree&)):
5847         Likewise.
5848         * include/bits/vector.tcc (vector::operator=(const vector&)):
5849         Likewise.
5850
5851 2021-04-30  Jonathan Wakely  <jwakely@redhat.com>
5852
5853         * include/std/istream (operator>>(Istream&&, x&)): Simplify, as
5854         per LWG 1203.
5855         * include/std/ostream (operator<<(Ostream&&, const x&)):
5856         Likewise.
5857         * testsuite/27_io/basic_istream/extractors_character/char/lwg2499_neg.cc:
5858         Adjust dg-error pattern.
5859         * testsuite/27_io/basic_istream/extractors_character/wchar_t/lwg2499_neg.cc:
5860         Likewise.
5861         * testsuite/27_io/basic_istream/extractors_other/char/4.cc: Define
5862         is_extractable trait to replace std::__is_extractable. Make it
5863         work with rvalue streams as well as lvalues, to replace f() and
5864         g() helper functions.
5865         * testsuite/27_io/basic_istream/extractors_other/wchar_t/4.cc:
5866         Likewise.
5867         * testsuite/27_io/basic_ostream/inserters_other/char/6.cc:
5868         Define is_insertable trait to replace std::__is_insertable. Make
5869         it work with rvalue streams as well as lvalues, to replace f()
5870         and g() helper functions.
5871         * testsuite/27_io/basic_ostream/inserters_other/wchar_t/6.cc:
5872         Likewise.
5873         * testsuite/27_io/filesystem/path/io/dr2989.cc: Prune additional
5874         errors from new constraints.
5875         * testsuite/27_io/rvalue_streams-2.cc: Remove PR 80675 checks,
5876         which are no longer expected to compile.
5877         * testsuite/27_io/rvalue_streams.cc: Adjust existing test.
5878         Verify LWG 1203 changes.
5879
5880 2021-04-30  Jonathan Wakely  <jwakely@redhat.com>
5881
5882         PR libstdc++/100285
5883         * include/experimental/socket (__basic_socket_impl::set_option)
5884         (__basic_socket_impl::get_option) [!_GLIBCXX_HAVE_SYS_SOCKET_H]:
5885         Just set error code.
5886         * testsuite/experimental/net/socket/socket_base.cc: CHeck
5887         for <sys/socket.h> not <socket.h>.
5888
5889 2021-04-30  Jonathan Wakely  <jwakely@redhat.com>
5890
5891         PR libstdc++/100180
5892         PR libstdc++/100286
5893         PR libstdc++/100351
5894         * testsuite/experimental/net/internet/address/v4/comparisons.cc:
5895         Use new effective-target keyword.
5896         * testsuite/experimental/net/internet/address/v4/cons.cc:
5897         Likewise.
5898         * testsuite/experimental/net/internet/address/v4/creation.cc:
5899         Likewise.
5900         * testsuite/experimental/net/internet/address/v4/members.cc:
5901         Likewise.
5902         * testsuite/experimental/net/internet/address/v6/members.cc:
5903         Likewise.
5904         * testsuite/experimental/net/internet/resolver/base.cc:
5905         Likewise.
5906         * testsuite/experimental/net/internet/resolver/ops/lookup.cc:
5907         Likewise.
5908         * testsuite/experimental/net/internet/resolver/ops/reverse.cc:
5909         Likewise.
5910         * testsuite/experimental/net/internet/socket/opt.cc:
5911         Likewise.
5912         * testsuite/experimental/net/internet/tcp.cc:
5913         Likewise.
5914         * testsuite/experimental/net/internet/udp.cc:
5915         Likewise.
5916         * testsuite/lib/libstdc++.exp (check_effective_target_net_ts_ip):
5917         New proc to check net_ts_ip et.
5918
5919 2021-04-28  Jonathan Wakely  <jwakely@redhat.com>
5920
5921         PR libstdc++/97930
5922         * testsuite/20_util/pair/requirements/structural.cc: New test.
5923
5924 2021-04-28  Jonathan Wakely  <jwakely@redhat.com>
5925
5926         * include/bits/stl_pair.h (pair) [__cplusplus > 202002]: Add
5927         new definitions for constructors and assignment operators using
5928         concepts for constraints.
5929         * testsuite/20_util/pair/cons/99957.cc: Disable for C++20 and
5930         later.
5931         * testsuite/20_util/pair/cons/explicit_construct.cc: Adjust
5932         expected error messages to also match C++20 errors.
5933
5934 2021-04-28  Jonathan Wakely  <jwakely@redhat.com>
5935
5936         PR libstdc++/99957
5937         * include/bits/stl_pair.h (_PCC::_MoveCopyPair, _PCC::_CopyMovePair):
5938         Combine and replace with ...
5939         (_PCC::_DeprConsPair): New SFINAE helper function.
5940         (pair): Merge preprocessor blocks so that all C++03 members
5941         are defined together at the end.
5942         (pair::pair(const _T1&, _U2&&), pair::pair(_U1&&, const _T2&)):
5943         Replace _T1 and _T2 parameters with __null_ptr_constant and
5944         adjust constraints.
5945         * testsuite/20_util/pair/40925.cc: Use nullptr instead of 0.
5946         * testsuite/20_util/pair/cons/explicit_construct.cc: Likewise.
5947         * testsuite/20_util/pair/cons/99957.cc: New test.
5948
5949 2021-04-28  Jonathan Wakely  <jwakely@redhat.com>
5950
5951         * include/bits/basic_string.h (__cpp_lib_constexpr_string): Define.
5952         * include/std/version (__cpp_lib_constexpr_string): Define.
5953         * testsuite/21_strings/char_traits/requirements/constexpr_functions_c++17.cc:
5954         Check for __cpp_lib_constexpr_string.
5955         * testsuite/21_strings/char_traits/requirements/constexpr_functions_c++20.cc:
5956         Likewise.
5957         * testsuite/21_strings/char_traits/requirements/version.cc: New test.
5958
5959 2021-04-28  Jonathan Wakely  <jwakely@redhat.com>
5960
5961         * doc/Makefile.am (stamp-pdf-doxygen): Improve comment about
5962         dealing with errors. Use '@' to prevent shell command being
5963         echoed.
5964         * doc/Makefile.in: Regenerate.
5965
5966 2021-04-28  Jonathan Wakely  <jwakely@redhat.com>
5967
5968         PR libstdc++/100298
5969         * include/bits/std_thread.h (thread::hardware_concurrency): Add
5970         missing noexcept to inline definition for non-gthreads targets.
5971
5972 2021-04-28  Patrick Palka  <ppalka@redhat.com>
5973
5974         PR libstdc++/100187
5975         PR libstdc++/100237
5976         PR libstdc++/100249
5977         PR libstdc++/100287
5978         * include/bits/ranges_algo.h (__search_n_fn::operator()): Give
5979         the __value_comp lambda an explicit bool return type.
5980         (__is_permutation_fn::operator()): Give the __proj_scan local
5981         variable auto&& return type.  Give the __comp_scan lambda an
5982         explicit bool return type.
5983         (__remove_fn::operator()): Give the __pred lambda an explicit
5984         bool return type.
5985         (__partition_fn::operator()): Don't std::move __first twice
5986         when returning an empty subrange.
5987         (__min_fn::operator()): Don't std::move __comp.
5988         (__max_fn::operator()): Likewise.
5989         (__minmax_fn::operator()): Likewise.
5990
5991 2021-04-27  Patrick Palka  <ppalka@redhat.com>
5992
5993         PR libstdc++/100290
5994         * include/std/ranges (join_view::_Iterator::operator++): Correct
5995         the return type of the lambda to avoid returning a copy of
5996         _M_parent->_M_inner.
5997         * testsuite/std/ranges/adaptors/join.cc (test10): New test.
5998
5999 2021-04-27  Jakub Jelinek  <jakub@redhat.com>
6000
6001         Revert:
6002         2021-04-22  Jakub Jelinek  <jakub@redhat.com>
6003
6004         PR target/100182
6005         * testsuite/29_atomics/atomic_float/1.cc: Add dg-xfail-run-if for
6006         ia32.
6007         * testsuite/29_atomics/atomic_float/wait_notify.cc: Add dg-skip-if for
6008         ia32.
6009
6010 2021-04-27  Jonathan Wakely  <jwakely@redhat.com>
6011
6012         * include/experimental/internet (address_v6::bytes_type): Adjust
6013         formatting.
6014         (basic_endpoint): Define _M_is_v6() to put all checks for
6015         AF_INET6 in one place.
6016         (basic_endpoint::resize): Simplify.
6017         (operator==(const tcp&, const tcp&)): Add constexpr and noexcept.
6018         (operator!=(const tcp&, const tcp&)): Likewise.
6019         (operator==(const udp&, const udp&)): Likewise.
6020         (operator!=(const udp&, const udp&)): Likewise.
6021         * testsuite/experimental/net/internet/tcp.cc: New test.
6022         * testsuite/experimental/net/internet/udp.cc: New test.
6023
6024 2021-04-27  Jonathan Wakely  <jwakely@redhat.com>
6025
6026         PR libstdc++/100286
6027         * include/experimental/internet (resolver_errc, resolver_category())
6028         (make_error_code, make_error_condition): Define unconditionally,
6029         only make enumerators and use of gai_strerror depend on the
6030         availability of <netdb.h>.
6031         (address_v4::to_string): Use correct constant for string length.
6032         (address_v4::to_string, address_v6::to_string): Define
6033         unconditionally, throw if unsupported.
6034         (make_address_v4, make_address_v6): Define unconditionally.
6035         Return an error if unsupported.
6036         (tcp, udp, v6_only, unicast::hops, multicast::*): Define
6037         conditionally,
6038         * testsuite/experimental/net/internet/socket/opt.cc: Check for
6039         <netinet/in.h> and <netinet/tcp.h> before using types from
6040         namespace net::ip.
6041
6042 2021-04-27  Jonathan Wakely  <jwakely@redhat.com>
6043
6044         PR libstdc++/100285
6045         * include/experimental/internet (resolver_base::flags):
6046         Define overloaded operators as hidden friends.
6047         * include/experimental/socket (socket_base::message_flags):
6048         Likewise.
6049
6050 2021-04-26  Jonathan Wakely  <jwakely@redhat.com>
6051
6052         * include/experimental/internet (tcp::no_delay, v6_only)
6053         (unicast::hops, multicast::hops, multicast::enable_loopback):
6054         Change access of base class and static data members. Add
6055         using-declaration for __socket_crtp::operator=(_Tp).
6056         (multicast::__mcastopt): New type.
6057         (multicast::join_group, multicast::leave_group): Derive from
6058         __mcastopt for common implementation.
6059         * include/experimental/socket: Add comment.
6060         * testsuite/experimental/net/internet/socket/opt.cc: New test.
6061         * testsuite/experimental/net/socket/socket_base.cc: Check for
6062         protected constructor/destructor of socket_base. Check for
6063         explicit constructors of socket option classes.
6064
6065 2021-04-26  Jonathan Wakely  <jwakely@redhat.com>
6066
6067         * include/experimental/bits/net.h (__socket_base): Add
6068         bool template parameter to allow BooleanSocketOption and
6069         IntegerSocketOption to have different __socket_base<int>
6070         base classes.
6071         (__socket_base<bool>): Adjust base class.
6072         (__socket_base<int>): Add partial specialization.
6073         (__socket_crtp::operator=(_Tp)): Add noexcept-specifier.
6074         * include/experimental/socket (socket_base::broadcast)
6075         (socket_base::debug, socket_base::do_not_route)
6076         (socket_base::keep_alive, socket_base::linger)
6077         (socket_base::out_of_band_inline)
6078         (socket_base::receive_buffer_size)
6079         (socket_base::receive_low_watermark)
6080         (socket_base::reuse_address, socket_base::send_buffer_size)
6081         (socket_base::send_low_watermark): Add using-declaration for
6082         __socket_crtp::operator=(_Tp).
6083         * testsuite/experimental/net/socket/socket_base.cc: Check
6084         properties of socket option types.
6085
6086 2021-04-26  Jonathan Wakely  <jwakely@redhat.com>
6087
6088         * include/experimental/internet (resolver_base::flags): Remove
6089         enumerators. Initialize constants directly with desired values.
6090         Make all operators constexpr and noexcept.
6091         * testsuite/experimental/net/internet/resolver/base.cc: Use
6092         __gnu_test::test_bitmask_values for bitmask type. Check
6093         construction and destruction is protected.
6094
6095 2021-04-26  Jonathan Wakely  <jwakely@redhat.com>
6096
6097         * include/bits/semaphore_base.h: Include <exception> and <errno.h>.
6098
6099 2021-04-26  Jonathan Wakely  <jwakely@redhat.com>
6100
6101         PR libstdc++/100259
6102         * include/experimental/internet (net::ip::make_error_code)
6103         (net::ip::make_error_condition, net::ip::make_network_v4)
6104         (net::ip::operator==(const udp&, const udp&)): Add 'inline'.
6105
6106 2021-04-24  David Edelsohn  <dje.gcc@gmail.com>
6107
6108         * testsuite/lib/dg-options.exp (atomic_link_flags): New.
6109         (add_options_for_libatomic): Use atomic_link_flags.
6110
6111 2021-04-23  Jonathan Wakely  <jwakely@redhat.com>
6112
6113         PR libstdc++/100180
6114         * include/experimental/io_context (io_context): Define
6115         dummy_pollfd type so that most member functions still compile
6116         without <poll.h> and struct pollfd.
6117
6118 2021-04-23  Jonathan Wakely  <jwakely@redhat.com>
6119
6120         * include/experimental/io_context (io_context::async_wait): Add
6121         comment.
6122         * include/experimental/socket (basic_socket::async_connect):
6123         Cast wait_type constant to int.
6124         (basic_datagram_socket::async_receive): Likewise.
6125         (basic_datagram_socket::async_receive_from): Likewise.
6126         (basic_datagram_socket::async_send): Likewise.
6127         (basic_datagram_socket::async_send_to): Likewise.
6128         (basic_stream_socket::async_receive): Likewise.
6129         (basic_stream_socket::async_send): Likewise. Use io_context
6130         parameter directly, instead of via an executor.
6131         (basic_socket_acceptor::async_accept): Likewise.
6132
6133 2021-04-23  Jonathan Wakely  <jwakely@redhat.com>
6134
6135         * include/experimental/socket (socket_base::shutdown_type):
6136         (socket_base::wait_type, socket_base::message_flags):
6137         Remove enumerators. Initialize constants directly with desired
6138         values.
6139         (socket_base::message_flags): Make all operators constexpr and
6140         noexcept.
6141         * testsuite/util/testsuite_common_types.h (test_bitmask_values):
6142         New test utility.
6143         * testsuite/experimental/net/socket/socket_base.cc: New test.
6144
6145 2021-04-22  David Edelsohn  <dje.gcc@gmail.com>
6146
6147         * config/os/aix/atomicity.h: Delete.
6148
6149 2021-04-22  Jonathan Wakely  <jwakely@redhat.com>
6150
6151         * include/bits/atomic_timed_wait.h (__cond_wait_until_impl):
6152         Handle system_clock as well as steady_clock.
6153         * testsuite/30_threads/semaphore/try_acquire_for.cc: Re-enable.
6154         * testsuite/30_threads/semaphore/try_acquire_until.cc:
6155         Re-enable.
6156
6157 2021-04-22  Jonathan Wakely  <jwakely@redhat.com>
6158
6159         * testsuite/30_threads/semaphore/try_acquire_posix.cc: Add
6160         options for libatomic.
6161
6162 2021-04-22  Jonathan Wakely  <jwakely@redhat.com>
6163
6164         * config/os/gnu-linux/os_defines.h: Fix type in comment.
6165
6166 2021-04-22  Jonathan Wakely  <jwakely@redhat.com>
6167
6168         PR libstdc++/99006
6169         * include/bits/shared_ptr.h (allocate_shared): Assert that _Tp
6170         is not an array type.
6171         * include/bits/shared_ptr_base.h (__allocate_shared): Likewise.
6172         * testsuite/20_util/shared_ptr/creation/99006.cc: New test.
6173
6174 2021-04-22  Thomas Rodgers  <rodgert@twrodgers.com>
6175
6176         * include/bits/atomic_wait.h: Always notify waiters in the
6177         case of 'bare' address notification.
6178
6179 2021-04-22  Jakub Jelinek  <jakub@redhat.com>
6180
6181         PR target/100182
6182         * testsuite/29_atomics/atomic_float/1.cc: Add dg-xfail-run-if for
6183         ia32.
6184         * testsuite/29_atomics/atomic_float/wait_notify.cc: Add dg-skip-if for
6185         ia32.
6186
6187 2021-04-22  Jonathan Wakely  <jwakely@redhat.com>
6188
6189         PR libstdc++/100179
6190         * include/bits/semaphore_base.h: Remove #error.
6191         * include/std/semaphore: Do not define anything unless one of
6192         the implementations is available.
6193
6194 2021-04-21  Thomas Rodgers  <rodgert@twrodgers.com>
6195
6196         * include/bits/semaphore_base.h: Always reload __old in
6197         __atomic_semaphore::_S_do_try_acquire().
6198         * testsuite/30_threads/stop_token/stop_callback/destroy.cc:
6199         re-enable testcase.
6200
6201 2021-04-21  Philippe Blain  <levraiphilippeblain@gmail.com>
6202             Jonathan Wakely  <jwakely@redhat.com>
6203
6204         PR libstdc++/99453
6205         * python/Makefile.am: Install libstdc++*-gdb.py more robustly.
6206         * python/Makefile.in: Regenerate.
6207
6208 2021-04-21  Thomas Rodgers  <rodgert@twrodgers.com>
6209
6210         * include/bits/semaphore_base.h: Add missing _M_try_acquire()
6211         member to __platform_wait.
6212
6213 2021-04-21  Jonathan Wakely  <jwakely@redhat.com>
6214
6215         * include/std/latch: Replace tab characters in license text.
6216         * include/std/semaphore: Likewise.
6217
6218 2021-04-21  Jakub Jelinek  <jakub@redhat.com>
6219
6220         PR libstdc++/100164
6221         * acinclude.m4: For POSIX semaphores AC_DEFINE HAVE_POSIX_SEMAPHORE
6222         rather than _GLIBCXX_HAVE_POSIX_SEMAPHORE.
6223         * configure: Regenerated.
6224         * config.h.in: Regenerated.
6225
6226 2021-04-20  Jonathan Wakely  <jwakely@redhat.com>
6227
6228         * testsuite/30_threads/semaphore/try_acquire_for.cc: Disable
6229         test for targets not using futexes for semaphores.
6230         * testsuite/30_threads/semaphore/try_acquire_until.cc: Likewise.
6231         * testsuite/30_threads/stop_token/stop_callback/destroy.cc:
6232         Disable for all targets.
6233
6234 2021-04-20  Thomas Rodgers  <trodgers@redhat.com>
6235
6236         * include/Makefile.am: Add new <bits/this_thread_sleep.h> header.
6237         * include/Makefile.in: Regenerate.
6238         * include/bits/this_thread_sleep.h: New file.
6239         * include/bits/atomic_base.h: Adjust all calls
6240         to __atomic_wait/__atomic_notify for new call signatures.
6241         * include/bits/atomic_timed_wait.h: Extensive rewrite.
6242         * include/bits/atomic_wait.h: Likewise.
6243         * include/bits/semaphore_base.h: Adjust all calls
6244         to __atomic_wait/__atomic_notify for new call signatures.
6245         * include/std/atomic: Likewise.
6246         * include/std/barrier: Likewise.
6247         * include/std/latch: Likewise.
6248         * include/std/semaphore: Likewise.
6249         * include/std/thread (this_thread::sleep_for)
6250         (this_thread::sleep_until): Move to new header.
6251         * testsuite/29_atomics/atomic/wait_notify/bool.cc: Simplify
6252         test.
6253         * testsuite/29_atomics/atomic/wait_notify/generic.cc: Likewise.
6254         * testsuite/29_atomics/atomic/wait_notify/pointers.cc: Likewise.
6255         * testsuite/29_atomics/atomic_flag/wait_notify/1.cc: Likewise.
6256         * testsuite/29_atomics/atomic_float/wait_notify.cc: Likewise.
6257         * testsuite/29_atomics/atomic_integral/wait_notify.cc: Likewise.
6258         * testsuite/29_atomics/atomic_ref/wait_notify.cc: Likewise.
6259
6260 2021-04-20  Patrick Palka  <ppalka@redhat.com>
6261
6262         PR libstdc++/95983
6263         * include/bits/stl_iterator.h (__detail::__move_iter_cat):
6264         Define.
6265         (move_iterator): Derive from the above in C++20 in order to
6266         conditionally define iterator_category as per P2259.
6267         (move_iterator::__base_cat): No longer used, so remove.
6268         (move_iterator::iterator_category): Remove in C++20.
6269         (__detail::__common_iter_use_postfix_proxy): Define.
6270         (common_iterator::_Proxy): Rename to ...
6271         (common_iterator:__arrow_proxy): ... this.
6272         (common_iterator::__postfix_proxy): Define as per P2259.
6273         (common_iterator::operator->): Adjust.
6274         (common_iterator::operator++): Adjust as per P2259.
6275         (iterator_traits<common_iterator>::_S_iter_cat): Define.
6276         (iterator_traits<common_iterator>::iterator_category): Change as
6277         per P2259.
6278         (__detail::__counted_iter_value_type): Define.
6279         (__detail::__counted_iter_concept): Define.
6280         (__detail::__counted_iter_cat): Define.
6281         (counted_iterator): Derive from the above three classes in order
6282         to conditionally define value_type, iterator_concept and
6283         iterator category respectively as per P2259.
6284         (counted_iterator::operator->): Define as per P2259.
6285         (incrementable_traits<counted_iterator>): Remove as per P2259.
6286         (iterator_traits<counted_iterator>): Adjust as per P2259.
6287         * include/std/ranges (__detail::__iota_view_iter_cat): Define.
6288         (iota_view::_Iterator): Derive from the above in order to
6289         conditionally define iterator_category as per P2259.
6290         (iota_view::_S_iter_cat): Rename to ...
6291         (iota_view::_S_iter_concept): ... this.
6292         (iota_view::iterator_concept): Use it to apply LWG 3291 changes.
6293         (iota_view::iterator_category): Remove.
6294         (__detail::__filter_view_iter_cat): Define.
6295         (filter_view::_Iterator): Derive from the above in order to
6296         conditionally define iterator_category as per P2259.
6297         (filter_view::_Iterator): Move to struct __filter_view_iter_cat.
6298         (filter_view::_Iterator::iterator_category): Remove.
6299         (transform_view::_Base): Define.
6300         (transform_view::__iter_cat): Define.
6301         (transform_view::_Iterator): Derive from the above in order to
6302         conditionally define iterator_category as per P2259.
6303         (transform_view::_Iterator::_Base): Just alias
6304         transform_view::_Base.
6305         (transform_view::_Iterator::_S_iter_cat): Move to struct
6306         transform_view::__iter_cat.
6307         (transform_view::_Iterator::iterator_category): Remove.
6308         (transform_view::_Sentinel::_Base): Just alias
6309         transform_view::_Base.
6310         (join_view::_Base): Define.
6311         (join_view::_Outer_iter): Define.
6312         (join_view::_Inner_iter): Define.
6313         (join_view::_S_ref_is_glvalue): Define.
6314         (join_view::__iter_cat): Define.
6315         (join_view::_Iterator): Derive from it in order to conditionally
6316         define iterator_category as per P2259.
6317         (join_view::_Iterator::_Base): Just alias join_view::_Base.
6318         (join_view::_Iterator::_S_ref_is_glvalue): Just alias
6319         join_view::_S_ref_is_glvalue.
6320         (join_view::_Iterator::_S_iter_cat): Move to struct
6321         transform_view::__iter_cat.
6322         (join_view::_Iterator::_Outer_iter): Just alias
6323         join_view::_Outer_iter.
6324         (join_view::_Iterator::_Inner_iter): Just alias
6325         join_view::_Inner_iter.
6326         (join_view::_Iterator::iterator_category): Remove.
6327         (join_view::_Sentinel::_Base): Just alias join_view::_Base.
6328         (__detail::__split_view_outer_iter_cat): Define.
6329         (__detail::__split_view_inner_iter_cat): Define.
6330         (split_view::_Base): Define.
6331         (split_view::_Outer_iter): Derive from __split_view_outer_iter_cat
6332         in order to conditionally define iterator_category as per P2259.
6333         (split_view::_Outer_iter::iterator_category): Remove.
6334         (split_view::_Inner_iter): Derive from __split_view_inner_iter_cat
6335         in order to conditionally define iterator_category as per P2259.
6336         (split_view::_Inner_iter::_S_iter_cat): Move to
6337         __split_view_inner_iter_cat.
6338         (split_view::_Inner_iter::iterator_category): Remove.
6339         (elements_view::_Base): Define.
6340         (elements_view::__iter_cat): Define.
6341         (elements_view::_Iterator): Derive from the above in order to
6342         conditionall define iterator_category as per P2259.
6343         (elements_view::_Iterator::_Base): Just alias
6344         elements_view::_Base.
6345         (elements_view::_Iterator::_S_iter_concept)
6346         (elements_view::_Iterator::iterator_concept): Define as per
6347         P2259.
6348         (elements_view::_Iterator::iterator_category): Remove.
6349         (elements_view::_Sentinel::_Base): Just alias
6350         elements_view::_Base.
6351         * testsuite/24_iterators/headers/iterator/synopsis_c++20.cc:
6352         Adjust constraints on iterator_traits<counted_iterator>.
6353         * testsuite/std/ranges/p2259.cc: New test.
6354
6355 2021-04-20  Jonathan Wakely  <jwakely@redhat.com>
6356
6357         PR libstdc++/100146
6358         * include/std/charconv (__cpp_lib_to_chars): Define
6359         conditionally.
6360         * include/std/version (__cpp_lib_to_chars): Likewise..
6361         * testsuite/20_util/from_chars/4.cc: Only check feature test
6362         macro, not _GLIBCXX_HAVE_USELOCALE.
6363         * testsuite/20_util/from_chars/5.cc: Likewise.
6364         * testsuite/20_util/from_chars/6.cc: Likewise.
6365         * testsuite/20_util/to_chars/long_double.cc: Likewise.
6366
6367 2021-04-20  Jakub Jelinek  <jakub@redhat.com>
6368
6369         * testsuite/util/testsuite_abi.cc (compare_symbols): If any symbol
6370         versions with _IEEE128_ substring are found, set ieee_version_found
6371         to true.  Ignore missing symbols with _IEEE128_ in version name if
6372         !ieee_version_found.  Use i->first as version_name instead of
6373         i->second.version_name if the latter is empty.
6374         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
6375
6376 2021-04-19  H.J. Lu  <hjl.tools@gmail.com>
6377
6378         * config/abi/post/x86_64-linux-gnu/x32/baseline_symbols.txt:
6379         Updated.
6380
6381 2021-04-17  Jakub Jelinek  <jakub@redhat.com>
6382
6383         * config/abi/post/powerpc-linux-gnu/baseline_symbols.txt: Update.
6384         * config/abi/post/powerpc64-linux-gnu/32/baseline_symbols.txt: Update.
6385
6386 2021-04-17  Jakub Jelinek  <jakub@redhat.com>
6387
6388         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
6389         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
6390         * config/abi/post/i386-linux-gnu/baseline_symbols.txt: Update.
6391         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
6392         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
6393         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
6394
6395 2021-04-15  Jonathan Wakely  <jwakely@redhat.com>
6396
6397         * testsuite/lib/dg-options.exp (add_options_for_libatomic): Also
6398         add libatomic options for 32-bit sparc*-*-linux-gnu.
6399
6400 2021-04-15  Jonathan Wakely  <jwakely@redhat.com>
6401
6402         PR libstdc++/96657
6403         * libsupc++/Makefile.am: Add atomicity.cc here.
6404         * src/c++98/Makefile.am: Remove it from here.
6405         * libsupc++/Makefile.in: Regenerate.
6406         * src/c++98/Makefile.in: Regenerate.
6407         * testsuite/18_support/exception_ptr/96657.cc: New test.
6408
6409 2021-04-13  Jonathan Wakely  <jwakely@redhat.com>
6410
6411         PR libstdc++/100060
6412         * include/std/bit: Only include <ext/numeric_traits.h> for
6413         hosted build, use <limits> otherwise.
6414
6415 2021-04-13  Jonathan Wakely  <jwakely@redhat.com>
6416
6417         * doc/xml/manual/backwards_compatibility.xml: Remove porting
6418         notes for libg++ and libstdc++-v2, and bibliography.
6419         * doc/html/*: Regenerated.
6420
6421 2021-04-12  Jonathan Wakely  <jwakely@redhat.com>
6422
6423         PR libstdc++/100044
6424         * include/bits/ranges_util.h (__detail::__iterator_sentinel_pair):
6425         Remove helper concept.
6426         (subrange(_Pr), subrange(Pr, __make_unsigned_like<...>)): Remove
6427         deduction guides, as per LWG 3404.
6428         * testsuite/std/ranges/subrange/lwg3282_neg.cc: Check that class
6429         template argument deduction fails.
6430
6431 2021-04-12  Jonathan Wakely  <jwakely@redhat.com>
6432
6433         * testsuite/26_numerics/random/linear_congruential_engine/requirements/non_uint_neg.cc:
6434         Adjust expected error for C++20 mode.
6435         * testsuite/tr1/5_numerical_facilities/random/linear_congruential/requirements/non_uint_neg.cc:
6436         Likewise.
6437
6438 2021-04-12  Jonathan Wakely  <jwakely@redhat.com>
6439
6440         PR libstdc++/99995
6441         * testsuite/17_intro/headers/c++1998/49745.cc: Include all
6442         standard headers and XFAIL for effective-target c++20.
6443
6444 2021-04-09  François Dumont  <fdumont@gcc.gnu.org>
6445
6446         PR libstdc++/99402
6447         * include/debug/helper_functions.h (__can_advance(_InputIterator,
6448         const std::pair<_Diff, _Distance_precision>&, int)): New.
6449         (__can_advance(const _Safe_iterator<>&,
6450         const std::pair<_Diff, _Distance_precision>&, int)): New.
6451         * include/debug/macros.h (__glibcxx_check_can_increment_dist): New,
6452         use latter.
6453         (__glibcxx_check_can_increment_range): Adapt to use latter.
6454         (__glibcxx_check_can_decrement_range): Likewise.
6455         * include/debug/safe_iterator.h
6456         (_Safe_iterator<>::_M_can_advance(const std::pair<_Diff, _Distance_precision>&,
6457         int)): New.
6458         (__can_advance(const _Safe_iterator<>&,
6459         const std::pair<_Diff, _Distance_precision>&, int)): New.
6460         * include/debug/safe_iterator.tcc
6461         (_Safe_iterator<>::_M_can_advance(const std::pair<_Diff, _Distance_precision>&,
6462         int)): New.
6463         (_Safe_iterator<>::_M_valid_range(const _Safe_iterator<>&,
6464         std::pair<difference_type, _Distance_precision>&, bool)): Adapt for
6465         __dp_sign_max_size.
6466         (__copy_move_a): Adapt to use __glibcxx_check_can_increment_dist.
6467         (__copy_move_backward_a): Likewise.
6468         (__equal_aux): Likewise.
6469         * include/debug/stl_iterator.h (__can_advance(const std::reverse_iterator<>&,
6470         const std::pair<_Diff, _Distance_precision>&, int)): New.
6471         (__can_advance(const std::move_iterator<>&,
6472         const std::pair<_Diff, _Distance_precision>&, int)): New.
6473         * testsuite/25_algorithms/copy/debug/99402.cc: New test.
6474
6475 2021-04-09  Jonathan Wakely  <jwakely@redhat.com>
6476
6477         PR libstdc++/99985
6478         * include/bits/hashtable.h (_Hashtable::_S_nothrow_move()): Fix
6479         to be a valid constexpr function in C++11.
6480         * testsuite/23_containers/unordered_set/cons/99985.cc: New test.
6481
6482 2021-04-09  Jonathan Wakely  <jwakely@redhat.com>
6483
6484         * include/bits/fs_fwd.h: Fix doxygen group command.
6485         * include/bits/streambuf_iterator.h: Likewise.
6486         * include/bits/uses_allocator_args.h: Likewise.
6487         * include/std/memory: Likewise.
6488         * include/tr1/complex: Likewise.
6489
6490 2021-04-08  Jonathan Wakely  <jwakely@redhat.com>
6491
6492         * include/bits/basic_string.h: Tweak doxygen comment.
6493
6494 2021-04-08  Patrick Palka  <ppalka@redhat.com>
6495
6496         * include/std/ranges (__detail::find): Define.
6497         (split_view::_OuterIter::operator++): Apply proposed resolution
6498         of LWG 3505.
6499         * testsuite/std/ranges/adaptors/split.cc (test10): New test.
6500
6501 2021-04-08  Patrick Palka  <ppalka@redhat.com>
6502
6503         * include/std/ranges (__detail::find_if): Simplify.
6504         (__detail::find_if_not): Likewise.
6505         (__detail::min): Remove.
6506         (__detail::mismatch): Simplify.
6507         (take_view::size): Use std::min instead of __detail::min.
6508
6509 2021-04-08  Patrick Palka  <ppalka@redhat.com>
6510
6511         * include/std/ranges (__detail::__returnable_element): New
6512         concept.
6513         (elements_view): Use this concept in its constraints.  Add
6514         missing private access specifier.
6515         (elements_view::_S_get_element): Define as per LWG 3502.
6516         (elements_view::operator*, elements_view::operator[]): Use
6517         _S_get_element.
6518         (elements_view::operator++): Remove unnecessary constraint
6519         as per LWG 3492.
6520         * testsuite/std/ranges/adaptors/elements.cc (test05): New test.
6521
6522 2021-04-08  Jonathan Wakely  <jwakely@redhat.com>
6523
6524         * doc/Makefile.am (stamp-pdf-doxygen): Also grep for
6525         out-of-memory error in log file.
6526         * doc/Makefile.in: Regenerate.
6527
6528 2021-04-08  Jonathan Wakely  <jwakely@redhat.com>
6529
6530         * configure: Regenerate.
6531
6532 2021-04-08  Jonathan Wakely  <jwakely@redhat.com>
6533
6534         * include/bits/random.h: Fix doxygen group commands.
6535         * include/bits/regex_constants.h: Likewise.
6536         * include/tr1/random.h: Likewise.
6537
6538 2021-04-08  Jonathan Wakely  <jwakely@redhat.com>
6539
6540         * include/bits/hashtable.h (_Hashtable::_S_nothrow_move()):
6541         New function to determine noexcept-specifier for move
6542         constructors.
6543         (_Hashtable): Use _S_nothrow_move() on move constructors.
6544         * testsuite/23_containers/unordered_map/cons/noexcept_move_construct.cc:
6545         Correct static assertion message.
6546         * testsuite/23_containers/unordered_multimap/cons/noexcept_move_construct.cc:
6547         Likewise.
6548         * testsuite/23_containers/unordered_multiset/cons/noexcept_move_construct.cc:
6549         Likewise.
6550         * testsuite/23_containers/unordered_set/cons/noexcept_move_construct.cc:
6551         Likewise.
6552
6553 2021-04-08  Patrick Palka  <ppalka@redhat.com>
6554
6555         PR libstdc++/98384
6556         * testsuite/20_util/to_chars/long_double.cc: Don't run the test
6557         on targets without a large long double.  XFAIL the execution on
6558         targets with a non-conforming printf.
6559
6560 2021-04-08  Patrick Palka  <ppalka@redhat.com>
6561
6562         PR libstdc++/99433
6563         * include/std/ranges (__adaptor::__maybe_refwrap): Remove.
6564         (__adaptor::__adaptor_invocable): New concept.
6565         (__adaptor::__adaptor_partial_app_viable): New concept.
6566         (__adaptor::_RangeAdaptorClosure): Rewrite, turning it into a
6567         non-template base class.
6568         (__adaptor::_RangeAdaptor): Rewrite, turning it into a CRTP base
6569         class template.
6570         (__adaptor::_Partial): New class template that represents
6571         partial application of a range adaptor non-closure.
6572         (__adaptor::__pipe_invocable): New concept.
6573         (__adaptor::_Pipe): New class template.
6574         (__detail::__can_ref_view): New concept.
6575         (__detail::__can_subrange): New concept.
6576         (all): Replace the lambda here with ...
6577         (_All): ... this functor.  Add appropriate constraints.
6578         (__detail::__can_filter_view): New concept.
6579         (filter, _Filter): As in all/_All.
6580         (__detail::__can_transform): New concept.
6581         (transform, _Transform): As in all/_All.
6582         (__detail::__can_take_view): New concept.
6583         (take, _Take): As in all/_All.
6584         (__detail::__can_take_while_view): New concept.
6585         (take_while, _TakeWhile): As in all/_All.
6586         (__detail::__can_drop_view): New concept.
6587         (drop, _Drop): As in all/_All.
6588         (__detail::__can_drop_while_view): New concept.
6589         (drop_while, _DropWhile): As in all/_All.
6590         (__detail::__can_join_view): New concept.
6591         (join, _Join): As in all/_All.
6592         (__detail::__can_split_view): New concept.
6593         (split, _Split): As in all/_All.  Rename template parameter
6594         _Fp to _Pattern.
6595         (__detail::__already_common): New concept.
6596         (__detail::__can_common_view): New concept.
6597         (common, _Common): As in all/_All.
6598         (__detail::__can_reverse_view): New concept.
6599         (reverse, _Reverse): As in all/_All.
6600         (__detail::__can_elements_view): New concept.
6601         (elements, _Elements): As in all/_All.
6602         (keys, values): Adjust.
6603         * testsuite/std/ranges/adaptors/99433.cc: New test.
6604         * testsuite/std/ranges/adaptors/all.cc: No longer expect that
6605         adding empty range adaptor closure objects to a pipeline doesn't
6606         increase the size of the pipeline.
6607         (test05): New test.
6608         * testsuite/std/ranges/adaptors/common.cc (test03): New test.
6609         * testsuite/std/ranges/adaptors/drop.cc (test09): New test.
6610         * testsuite/std/ranges/adaptors/drop_while.cc (test04): New test.
6611         * testsuite/std/ranges/adaptors/elements.cc (test04): New test.
6612         * testsuite/std/ranges/adaptors/filter.cc (test06): New test.
6613         * testsuite/std/ranges/adaptors/join.cc (test09): New test.
6614         * testsuite/std/ranges/adaptors/p2281.cc: New test.
6615         * testsuite/std/ranges/adaptors/reverse.cc (test07): New test.
6616         * testsuite/std/ranges/adaptors/split.cc (test01, test04):
6617         Adjust.
6618         (test09): New test.
6619         * testsuite/std/ranges/adaptors/split_neg.cc (test01): Adjust
6620         expected error message.
6621         (test02): Likewise.  Extend test.
6622         * testsuite/std/ranges/adaptors/take.cc (test06): New test.
6623         * testsuite/std/ranges/adaptors/take_while.cc (test05): New test.
6624         * testsuite/std/ranges/adaptors/transform.cc (test07, test08):
6625         New test.
6626
6627 2021-04-08  Jonathan Wakely  <jwakely@redhat.com>
6628
6629         * include/std/string_view: Adjust Doxygen @file comment.
6630
6631 2021-04-08  Jonathan Wakely  <jwakely@redhat.com>
6632
6633         * include/std/type_traits (is_scoped_enum<T>): Constrain partial
6634         specialization to not match incomplete enum types. Use a
6635         requires-expression instead of instantiating is_convertible.
6636         (is_scoped_enum<const T>): Add as workaround for PR c++/99968.
6637         * testsuite/20_util/is_scoped_enum/value.cc: Check with
6638         incomplete types and opaque-enum-declarations.
6639
6640 2021-04-07  Jonathan Wakely  <jwakely@redhat.com>
6641
6642         PR libstdc++/99805
6643         * src/c++17/fs_path.cc (path::_M_split_cmpts): Do not call
6644         non-const member on _M_pathname, to avoid copy-on-write.
6645         * testsuite/27_io/filesystem/path/decompose/parent_path.cc:
6646         Check construction from strings that might be shared.
6647
6648 2021-04-06  Jonathan Wakely  <jwakely@redhat.com>
6649
6650         * include/bits/move.h (forward, move, move_if_noexcept)
6651         (addressof): Add _GLIBCXX_NODISCARD.
6652         * include/bits/ranges_cmp.h (identity::operator()): Add
6653         nodiscard attribute.
6654         * include/c_global/cstddef (to_integer): Likewise.
6655         * include/std/bit (bit_cast): Likewise.
6656         * include/std/utility (as_const, to_underlying): Likewise.
6657
6658 2021-04-06  Jonathan Wakely  <jwakely@redhat.com>
6659
6660         * include/bits/move.h (forward): Change static_assert message
6661         to be unambiguous about what must be true.
6662         * testsuite/20_util/forward/c_neg.cc: Adjust dg-error.
6663         * testsuite/20_util/forward/f_neg.cc: Likewise.
6664
6665 2021-04-06  Jonathan Wakely  <jwakely@redhat.com>
6666
6667         * include/bits/alloc_traits.h: Use markdown for code font.
6668         * include/bits/basic_string.h: Fix @param names.
6669         * include/bits/max_size_type.h: Remove period after @file.
6670         * include/bits/regex.h: Fix duplicate @retval names, and rename.
6671         * include/ext/pb_ds/detail/priority_queue_base_dispatch.hpp: Add
6672         group open to match existing group close.
6673         * include/ext/pb_ds/priority_queue.hpp: Add blank line before group
6674         open.
6675
6676 2021-04-06  Jonathan Wakely  <jwakely@redhat.com>
6677
6678         * include/bits/atomic_base.h: Fix doxygen group close.
6679         * include/bits/basic_ios.h: Likewise.
6680         * include/bits/forward_list.h: Likewise.
6681         * include/bits/fs_dir.h: Likewise.
6682         * include/bits/fs_ops.h: Likewise.
6683         * include/bits/fs_path.h: Likewise.
6684         * include/bits/functional_hash.h: Likewise.
6685         * include/bits/gslice.h: Likewise.
6686         * include/bits/gslice_array.h: Likewise.
6687         * include/bits/hashtable_policy.h: Likewise.
6688         * include/bits/indirect_array.h: Likewise.
6689         * include/bits/locale_classes.h: Likewise.
6690         * include/bits/locale_facets.h: Likewise.
6691         * include/bits/locale_facets_nonio.h: Likewise.
6692         * include/bits/mask_array.h: Likewise.
6693         * include/bits/refwrap.h: Likewise.
6694         * include/bits/regex.h: Likewise.
6695         * include/bits/regex_automaton.h: Likewise.
6696         * include/bits/regex_compiler.h: Likewise.
6697         * include/bits/regex_constants.h: Likewise.
6698         * include/bits/regex_error.h: Likewise.
6699         * include/bits/regex_executor.h: Likewise.
6700         * include/bits/regex_scanner.h: Likewise.
6701         * include/bits/shared_ptr.h: Likewise.
6702         * include/bits/shared_ptr_atomic.h: Likewise.
6703         * include/bits/shared_ptr_base.h: Likewise.
6704         * include/bits/slice_array.h: Likewise.
6705         * include/bits/specfun.h: Likewise.
6706         * include/bits/std_function.h: Likewise.
6707         * include/bits/std_mutex.h: Likewise.
6708         * include/bits/stl_deque.h: Likewise.
6709         * include/bits/stl_iterator.h: Likewise.
6710         * include/bits/stl_iterator_base_types.h: Likewise.
6711         * include/bits/stl_map.h: Likewise.
6712         * include/bits/stl_multimap.h: Likewise.
6713         * include/bits/stl_multiset.h: Likewise.
6714         * include/bits/stl_numeric.h: Likewise.
6715         * include/bits/stl_pair.h: Likewise.
6716         * include/bits/stl_set.h: Likewise.
6717         * include/bits/stl_uninitialized.h: Likewise.
6718         * include/bits/stream_iterator.h: Likewise.
6719         * include/bits/streambuf_iterator.h: Likewise.
6720         * include/bits/unique_ptr.h: Likewise.
6721         * include/bits/unordered_map.h: Likewise.
6722         * include/bits/unordered_set.h: Likewise.
6723         * include/decimal/decimal: Likewise.
6724         * include/experimental/any: Likewise.
6725         * include/experimental/array: Likewise.
6726         * include/experimental/bits/fs_dir.h: Likewise.
6727         * include/experimental/bits/fs_fwd.h: Likewise.
6728         * include/experimental/bits/fs_ops.h: Likewise.
6729         * include/experimental/bits/fs_path.h: Likewise.
6730         * include/experimental/buffer: Likewise.
6731         * include/experimental/internet: Likewise.
6732         * include/experimental/optional: Likewise.
6733         * include/experimental/propagate_const: Likewise.
6734         * include/experimental/socket: Likewise.
6735         * include/ext/pb_ds/assoc_container.hpp: Likewise.
6736         * include/ext/pb_ds/detail/priority_queue_base_dispatch.hpp:
6737         Likewise.
6738         * include/ext/pb_ds/detail/tree_policy/node_metadata_selector.hpp: Likewise.
6739         * include/ext/pb_ds/detail/trie_policy/node_metadata_selector.hpp: Likewise.
6740         * include/ext/pb_ds/detail/types_traits.hpp: Likewise.
6741         * include/ext/pb_ds/exception.hpp: Likewise.
6742         * include/ext/pb_ds/priority_queue.hpp: Likewise.
6743         * include/ext/pb_ds/tag_and_trait.hpp: Likewise.
6744         * include/ext/random: Likewise.
6745         * include/std/any: Likewise.
6746         * include/std/atomic: Likewise.
6747         * include/std/bitset: Likewise.
6748         * include/std/chrono: Likewise.
6749         * include/std/complex: Likewise.
6750         * include/std/condition_variable: Likewise.
6751         * include/std/fstream: Likewise.
6752         * include/std/future: Likewise.
6753         * include/std/iostream: Likewise.
6754         * include/std/istream: Likewise.
6755         * include/std/mutex: Likewise.
6756         * include/std/numeric: Likewise.
6757         * include/std/ostream: Likewise.
6758         * include/std/ratio: Likewise.
6759         * include/std/shared_mutex: Likewise.
6760         * include/std/stdexcept: Likewise.
6761         * include/std/streambuf: Likewise.
6762         * include/std/system_error: Likewise.
6763         * include/std/thread: Likewise.
6764         * include/std/valarray: Likewise.
6765         * include/std/variant: Likewise.
6766         * include/tr1/cmath: Likewise.
6767         * include/tr1/regex: Likewise.
6768         * include/tr2/dynamic_bitset: Likewise.
6769         * libsupc++/atomic_lockfree_defines.h: Likewise.
6770         * libsupc++/exception: Likewise.
6771         * libsupc++/exception.h: Likewise.
6772         * libsupc++/exception_ptr.h: Likewise.
6773         * libsupc++/nested_exception.h: Likewise.
6774
6775 2021-03-31  Alexandre Oliva  <oliva@adacore.com>
6776
6777         * testsuite/30_threads/future/members/poll.cc: Use faster
6778         after-ready call in the calibration loop.
6779
6780 2021-03-29  Jonathan Wakely  <jwakely@redhat.com>
6781
6782         * doc/xml/manual/status_cxx2017.xml: Adjust link for PSTL.
6783         * doc/html/manual/status.html: Regenerate.
6784
6785 2021-03-28  François Dumont  <fdumont@gcc.gnu.org>
6786
6787         * include/debug/forward_list
6788         (forward_list(forward_list&&, const allocator_type&)): Add noexcept qualification.
6789         * include/debug/list (list(list&&, const allocator_type&)): Likewise and add
6790         call to safe container allocator aware move constructor.
6791         * include/debug/vector (vector(vector&&, const allocator_type&)):
6792         Fix noexcept qualification.
6793         * testsuite/23_containers/forward_list/cons/noexcept_move_construct.cc:
6794         Add allocator-extended move constructor noexceot qualification check.
6795         * testsuite/23_containers/list/cons/noexcept_move_construct.cc: Likewise.
6796
6797 2021-03-26  Jonathan Wakely  <jwakely@redhat.com>
6798
6799         * src/c++11/random.cc (USE_LCG): Define when a pseudo-random
6800         fallback is needed.
6801         [USE_LCG] (bad_seed, construct_lcg_at, destroy_lcg_at, __lcg):
6802         New helper functions and callback.
6803         (random_device::_M_init): Add 'prng' and 'all' enumerators.
6804         Replace switch with fallthrough with a series of 'if' statements.
6805         [USE_LCG]: Construct an lcg_type engine and use __lcg when cpuid
6806         checks fail.
6807         (random_device::_M_init_pretr1) [USE_MT19937]: Accept "prng"
6808         token.
6809         (random_device::_M_getval): Check for callback unconditionally
6810         and always pass _M_file pointer.
6811         * testsuite/26_numerics/random/random_device/85494.cc: Remove
6812         effective-target check. Use new random_device_available helper.
6813         * testsuite/26_numerics/random/random_device/94087.cc: Likewise.
6814         * testsuite/26_numerics/random/random_device/cons/default-cow.cc:
6815         Remove effective-target check.
6816         * testsuite/26_numerics/random/random_device/cons/default.cc:
6817         Likewise.
6818         * testsuite/26_numerics/random/random_device/cons/token.cc: Use
6819         new random_device_available helper. Test "prng" token.
6820         * testsuite/util/testsuite_random.h (random_device_available):
6821         New helper function.
6822
6823 2021-03-25  François Dumont  <fdumont@gcc.gnu.org>
6824
6825         * include/debug/string
6826         (basic_string(const basic_string&, const _Alloc&)): Define even if !_GLIBCXX_USE_CXX11_ABI.
6827         (basic_string(basic_string&&, const _Alloc&)): Likewise and add noexcept qualification.
6828         (basic_string<>::erase): Adapt to take __const_iterator.
6829         (basic_string(const _CharT*, const _Allocator&)): Remove assign call.
6830         (basic_string<>::insert(const_iterator, _InputIte, _InputIte)): Try to
6831         remove iterator debug layer even if !_GLIBCXX_USE_CXX11_ABI.
6832         [_GLIBCXX_USE_CHAR8_T] (__gnu_debug::u8string): New.
6833         (__gnu_debug::u16string, __gnu_debug::u32string): New.
6834         (std::hash<__gnu_debug::basic_string<>>): New partial specialization.
6835         (std::__is_fast_hash<__gnu_debug::basic_string<>>): Likewise.
6836         * testsuite/util/exception/safety.h
6837         (erase_base<__gnu_debug::basic_string<>>): New partial specialization.
6838         (insert_base<__gnu_debug::basic_string<>>): Likewise.
6839         * testsuite/util/testsuite_container_traits.h (traits<__gnu_debug::basic_string<>>):
6840         New partial specialization.
6841         * testsuite/21_strings/basic_string/hash/debug.cc: New test.
6842         * testsuite/21_strings/basic_string/requirements/citerators.cc:
6843         Add test on __gnu_debug::string.
6844         * testsuite/21_strings/basic_string/requirements/dr438/constructor.cc: Likewise.
6845         * testsuite/21_strings/basic_string/requirements/exception/basic.cc: Likewise.
6846         * testsuite/21_strings/basic_string/requirements/exception/generation_prohibited.cc:
6847         Likewise.
6848         * testsuite/21_strings/basic_string/requirements/exception/propagation_consistent.cc:
6849         Likewise.
6850         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char/1.cc:
6851         Likewise.
6852         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char16_t/1.cc:
6853         Likewise.
6854         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char32_t/1.cc:
6855         Likewise.
6856         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char8_t/1.cc:
6857         Likewise.
6858         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/wchar_t/1.cc:
6859         Likewise.
6860         * testsuite/21_strings/basic_string/requirements/typedefs.cc: Likewise.
6861
6862 2021-03-25  Jakub Jelinek  <jakub@redhat.com>
6863
6864         PR c++/99672
6865         * testsuite/18_support/source_location/consteval.cc (main): Adjust
6866         expected column numbers.
6867         * testsuite/18_support/source_location/1.cc (main): Likewise.
6868
6869 2021-03-25  Jonathan Wakely  <jwakely@redhat.com>
6870
6871         * libsupc++/new_opa.cc [!_GLIBCXX_HOSTED]: Declare malloc.
6872
6873 2021-03-25  Jonathan Wakely  <jwakely@redhat.com>
6874
6875         * testsuite/util/exception/safety.h (setup_base::generate):
6876         Support seeding random engine.
6877         (erase_point, erase_range): Adjust range of random numbers to
6878         ensure dereferenceable iterators are used where required.
6879         (generation_prohibited::run): Do not try to erase from empty
6880         containers.
6881         * testsuite/util/testsuite_containergen.h (test_containers):
6882         Support seeding random engine.
6883
6884 2021-03-23  Jonathan Wakely  <jwakely@redhat.com>
6885
6886         * testsuite/std/ranges/adaptors/reverse.cc: Replace duplicated
6887         line with a check that uses the const being/end overloads.
6888
6889 2021-03-23  Moritz Sichert  <sichert@in.tum.de>
6890
6891         * include/std/ranges (reverse_view::begin, reverse_view::end):
6892         Qualify make_reverse_iterator calls to avoid ADL.
6893         * testsuite/std/ranges/adaptors/reverse.cc: Test that
6894         views::reverse works when make_reverse_iterator is defined
6895         in an associated namespace.
6896
6897 2021-03-23  Jonathan Wakely  <jwakely@redhat.com>
6898
6899         * include/bits/c++config (_GLIBCXX_LONG_DOUBLE_ALT128_COMPAT):
6900         Do not define when compiling with Clang.
6901
6902 2021-03-22  Jonathan Wakely  <jwakely@redhat.com>
6903
6904         * include/std/string_view (basic_string_view(Range&&)): Define new
6905         constructor and deduction guide.
6906         * testsuite/21_strings/basic_string_view/cons/char/range_c++20.cc: New test.
6907         * testsuite/21_strings/basic_string_view/cons/wchar_t/range_c++20.cc: New test.
6908
6909 2021-03-22  Jonathan Wakely  <jwakely@redhat.com>
6910
6911         * include/bits/range_access.h (begin(T (&)[N]), end(T (&)[N])):
6912         Add missing 'noexcept' as per LWG 2280.
6913         (rbegin(T (&)[N]), rend(T (&)[N]), rbegin(initializer_list<T>))
6914         (rend(initializer_list<T>)): Add 'noexcept' as per LWG 3537.
6915         * testsuite/24_iterators/range_access/range_access.cc: Check for
6916         expected noexcept specifiers. Check result types of generic
6917         std::begin and std::end overloads.
6918         * testsuite/24_iterators/range_access/range_access_cpp14.cc:
6919         Check for expected noexcept specifiers.
6920         * testsuite/24_iterators/range_access/range_access_cpp17.cc:
6921         Likewise.
6922
6923 2021-03-19  Jonathan Wakely  <jwakely@redhat.com>
6924
6925         * include/std/type_traits (is_scoped_enum): Define.
6926         * include/std/version (__cpp_lib_is_scoped_enum): Define.
6927         * testsuite/20_util/is_scoped_enum/value.cc: New test.
6928         * testsuite/20_util/is_scoped_enum/version.cc: New test.
6929
6930 2021-03-16  Jonathan Wakely  <jwakely@redhat.com>
6931
6932         PR libstdc++/99341
6933         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Remove
6934         std::once_flag symbols.
6935         * config/abi/post/ia64-linux-gnu/baseline_symbols.txt: Likewise.
6936         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Likewise.
6937         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt:
6938         Likewise.
6939         * config/abi/pre/gnu.ver: Likewise.
6940         * src/c++11/mutex.cc [_GLIBCXX_HAVE_LINUX_FUTEX]
6941         (struct __once_flag_compat): Remove.
6942         (_ZNSt9once_flag11_M_activateEv): Remove.
6943         (_ZNSt9once_flag9_M_finishEb): Remove.
6944
6945 2021-03-16  Jonathan Wakely  <jwakely@redhat.com>
6946
6947         PR libstdc++/99341
6948         * include/std/mutex [_GLIBCXX_HAVE_LINUX_FUTEX] (once_flag):
6949         Revert to pthread_once_t implementation.
6950         [_GLIBCXX_HAVE_LINUX_FUTEX] (call_once): Likewise.
6951         * src/c++11/mutex.cc [_GLIBCXX_HAVE_LINUX_FUTEX]
6952         (struct __once_flag_compat): New type matching the reverted
6953         implementation of once_flag using futexes.
6954         (once_flag::_M_activate): Remove, replace with ...
6955         (_ZNSt9once_flag11_M_activateEv): ... alias symbol.
6956         (once_flag::_M_finish): Remove, replace with ...
6957         (_ZNSt9once_flag9_M_finishEb): ... alias symbol.
6958         * testsuite/30_threads/call_once/66146.cc: Removed.
6959
6960 2021-03-15  Iain Sandoe  <iain@sandoe.co.uk>
6961
6962         * testsuite/17_intro/names.cc: Exclude j from the list
6963         of test symbols for Darwin.
6964
6965 2021-03-15  Iain Sandoe  <iain@sandoe.co.uk>
6966
6967         * config/os/bsd/darwin/ppc-extra.ver: Add matching for
6968         to_chars and from_chars for long double.
6969
6970 2021-03-15  Patrick Palka  <ppalka@redhat.com>
6971
6972         * include/bits/max_size_type.h (__max_size_type::operator _Tp):
6973         Fix formatting.
6974         (__max_size_type::operator++): Define.
6975         (__max_size_type::operator--): Likewise.
6976         (__max_size_type::operator<=>): Conditionally define (in place
6977         of the other comparison operators).
6978         (__max_diff_type::operator _Tp): Fix formatting.
6979         (__max_diff_type::operator++): Define.
6980         (__max_diff_type::operator--): Likewise.
6981         (__max_diff_type::operator<=>): Conditionally define (in place
6982         of the other comparison operators).
6983         * testsuite/std/ranges/iota/max_size_type.cc (test01): Test
6984         these operator overloads.
6985
6986 2021-03-15  Caroline Tice  <cmtice@google.com>
6987
6988         PR libstdc++/99172
6989         * src/Makefile.am (AM_CXXFLAGS_PRE, AM_CXXFLAGS): Add
6990         AM_CXXFLAGS_PRE with the old definition of AM_CXXFLAGS; make
6991         AM_CXXFLAGS to be AM_CXXFLAGS_PRE with '-fvtable-verify=std'
6992         filtered out.
6993         * src/Makefile.in: Regenerate.
6994
6995 2021-03-11  Patrick Palka  <ppalka@redhat.com>
6996
6997         * src/c++17/floating_to_chars.cc: Simplify the file as if
6998         __SIZEOF_INT128__ is always defined.
6999         [!defined __SIZEOF_INT128__]: Include "uint128_t.h".  Define
7000         a base-10 to_chars overload for the uint128_t class type.
7001         * src/c++17/uint128_t.h: New file.
7002         * testsuite/20_util/to_chars/long_double.cc: No longer expect an
7003         execution FAIL on targets that have a large long double type
7004         but lack __int128.
7005
7006 2021-03-11  Patrick Palka  <ppalka@redhat.com>
7007
7008         * src/c++17/ryu/LOCAL_PATCHES: Update.
7009         * src/c++17/ryu/d2s_intrinsics.h: Don't define uint128_t.
7010         * src/c++17/ryu/generic_128.h: Likewise.
7011         * src/c++17/ryu/ryu_generic_128.h (struct floating_decimal_128):
7012         Use uint128_t instead of __uint128_t.
7013         (generic_binary_to_decimal): Likewise.
7014
7015 2021-03-11  Patrick Palka  <ppalka@redhat.com>
7016
7017         * src/c++17/ryu/LOCAL_PATCHES: New file.
7018
7019 2021-03-11  Patrick Palka  <ppalka@redhat.com>
7020
7021         * src/c++17/floating_to_chars.cc (uint128_t): New conditionally
7022         defined alias of unsigned __int128.
7023         (floating_type_traits_binary128::mantissa_t): Use uint128_t
7024         instead of unsigned __int128.
7025         (floating_type_traits<long double>::mantissa_t)
7026         [LONG_DOUBLE_KIND == LDK_IBM128]: Likewise.
7027         (get_ieee_repr): Likewise.  Make casts from uint_t to mantissa_t
7028         and uint32_t explicit.  Simplify the extraction of mantissa,
7029         exponent and sign bit.
7030
7031 2021-03-11  Jonathan Wakely  <jwakely@redhat.com>
7032
7033         * include/std/barrier (barrier::arrival_token): New move-only
7034         class that encapsulates the underlying token value.
7035
7036 2021-03-11  Jonathan Wakely  <jwakely@redhat.com>
7037
7038         * python/libstdcxx/v6/printers.py (find_type): Use tag attribute
7039         instead of unqualified() method.
7040
7041 2021-03-11  Jonathan Wakely  <jwakely@redhat.com>
7042
7043         PR libstdc++/99537
7044         * include/std/stop_token (_Stop_state_t::_M_release_ownership):
7045         Use acq_rel memory ordering.
7046
7047 2021-03-11  Jonathan Wakely  <jwakely@redhat.com>
7048
7049         PR libstdc++/99533
7050         * src/c++17/fs_dir.cc (recursive_directory_iterator): Use new
7051         helper function to check for permission denied errors.
7052         * src/filesystem/dir.cc (recursive_directory_iterator):
7053         Likewise.
7054         * src/filesystem/dir-common.h (is_permission_denied_error): New
7055         helper function.
7056
7057 2021-03-11  Jonathan Wakely  <jwakely@redhat.com>
7058
7059         PR libstdc++/99536
7060         * include/bits/random.h (normal_distribution): Use
7061         default-initializer for _M_saved and _M_saved_available.
7062
7063 2021-03-10  John David Anglin  <danglin@gcc.gnu.org>
7064
7065         * testsuite/29_atomics/atomic/wait_notify/bool.cc: Add options to
7066         link with libatomic.
7067         * testsuite/29_atomics/atomic/wait_notify/generic.cc: Likewise.
7068         * testsuite/29_atomics/atomic/wait_notify/pointers.cc: Likewise.
7069         * testsuite/29_atomics/atomic_flag/wait_notify/1.cc: Likewise.
7070         * testsuite/30_threads/barrier/arrive.cc: Likewise.
7071         * testsuite/30_threads/barrier/arrive_and_drop.cc: Likewise.
7072         * testsuite/30_threads/barrier/arrive_and_wait.cc: Likewise.
7073         * testsuite/30_threads/barrier/completion.cc: Likewise.
7074         * testsuite/30_threads/latch/3.cc: Likewise.
7075         * testsuite/30_threads/semaphore/try_acquire.cc: Likewise.
7076         * testsuite/30_threads/semaphore/try_acquire_for.cc: Likewise.
7077         * testsuite/30_threads/semaphore/try_acquire_until.cc: Likewise.
7078
7079 2021-03-10  Jonathan Wakely  <jwakely@redhat.com>
7080
7081         PR libstdc++/99413
7082         * include/bits/align.h: Include debug/assertions.h.
7083         * include/bits/codecvt.h: Include bits/c++config.h.
7084         * include/bits/enable_special_members.h: Likewise.
7085         * include/bits/erase_if.h: Likewise.
7086         * include/bits/functional_hash.h: Include <type_traits>.
7087         * include/bits/invoke.h: Include bits/move.h.
7088         * include/bits/ostream_insert.h: Include bits/exception_defines.h.
7089         * include/bits/parse_numbers.h: Include <type_traits>.
7090         * include/bits/predefined_ops.h: Include bits/c++config.h.
7091         * include/bits/range_access.h: Include bits/stl_iterator.h.
7092         * include/bits/stl_bvector.h: Do not include bits/stl_vector.h.
7093         * include/bits/stl_iterator.h: Include bits/stl_iterator_base_types.h.
7094         * include/bits/stl_uninitialized.h: Include bits/stl_algobase.h.
7095         * include/bits/uniform_int_dist.h: Include bits/concept_check.h.
7096         * include/bits/unique_lock.h: Include bits/std_mutex.h.
7097         * include/debug/assertions.h: Include bits/c++config.h.
7098
7099 2021-03-10  Jonathan Wakely  <jwakely@redhat.com>
7100
7101         * include/bits/ranges_cmp.h (__eq_builtin_ptr_cmp): Remove.
7102         (ranges::equal_to, ranges::not_equal_to): Do not constrain
7103         with __eq_builtin_ptr_cmp.
7104         (ranges::less, ranges::greater, ranges::less_equal)
7105         (ranges::greater_equal): Do not constrain with
7106         __less_builtin_ptr_cmp.
7107         * libsupc++/compare (compare_three_way): Do not constrain with
7108         __3way_builtin_ptr_cmp.
7109         * testsuite/18_support/comparisons/object/builtin-ptr-three-way.cc: Moved to...
7110         * testsuite/18_support/comparisons/object/lwg3530.cc: ...here.
7111         * testsuite/20_util/function_objects/range.cmp/lwg3530.cc: New test.
7112
7113 2021-03-10  Jonathan Wakely  <jwakely@redhat.com>
7114
7115         * testsuite/std/time/syn_c++20.cc: Enable synopsis checks for
7116         C++20 calendar types.
7117
7118 2021-03-06  Jakub Jelinek  <jakub@redhat.com>
7119
7120         PR libstdc++/99396
7121         * include/std/bit (__rotl, __rotr): Add optimized variants for power of
7122         two _Nd which the compiler can pattern match the rotates.
7123
7124 2021-03-04  Jonathan Wakely  <jwakely@redhat.com>
7125
7126         PR libstdc++/99382
7127         * testsuite/20_util/specialized_algorithms/uninitialized_default_n/sizes.cc:
7128         Make storage larger than required. Verify no write to the last
7129         element.
7130         * testsuite/20_util/specialized_algorithms/uninitialized_value_construct_n/sizes.cc:
7131         Likewise.
7132
7133 2021-03-03  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
7134
7135         * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
7136         * config/abi/post/i386-solaris/amd64/baseline_symbols.txt:
7137         Likewise.
7138         * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
7139         * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
7140         Likewise.
7141
7142 2021-03-03  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
7143
7144         * include/experimental/bits/simd.h: Replace reserved _X, _B by
7145         _Xp, _Bp.
7146         * include/experimental/bits/simd_builtin.h: Likewise.
7147         * include/experimental/bits/simd_x86.h: Likewise.
7148
7149 2021-02-27  Jonathan Wakely  <jwakely@redhat.com>
7150
7151         PR libstdc++/99301
7152         * include/std/chrono (year_month_day::_M_days_since_epoch()):
7153         Convert chrono::month and chrono::day to unsigned before
7154         converting to uint32_t.
7155
7156 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
7157
7158         * include/std/chrono (year_month_day::_S_from_days): Perform
7159         all calculations with type uint32_t.
7160
7161 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
7162
7163         * doc/xml/manual/abi.xml: Document versioning for GCC 11.
7164         * doc/html/manual/abi.html: Regenerate.
7165
7166 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
7167
7168         PR libstdc++/99270
7169         * testsuite/27_io/headers/cstdio/types_std.cc: Use pointer to
7170         FILE instead of FILE.
7171
7172 2021-02-25  Andreas Schwab  <schwab@suse.de>
7173
7174         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
7175         * config/abi/post/ia64-linux-gnu/baseline_symbols.txt: Update.
7176         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
7177         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
7178
7179 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
7180
7181         PR libstdc++/99265
7182         * include/std/chrono (year_month_day::_S_from_days): Cast long
7183         to int explicitly.
7184
7185 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
7186
7187         * include/std/utility (to_underlying): Define.
7188         * include/std/version (__cpp_lib_to_underlying): Define.
7189         * testsuite/20_util/to_underlying/1.cc: New test.
7190         * testsuite/20_util/to_underlying/version.cc: New test.
7191
7192 2021-02-24  Jonathan Wakely  <jwakely@redhat.com>
7193
7194         PR libstdc++/99261
7195         * src/c++17/floating_to_chars.cc (sprintf_ld): Add extra args
7196         before value to be printed.
7197
7198 2021-02-24  Patrick Palka  <ppalka@redhat.com>
7199
7200         * src/c++17/floating_to_chars.cc (__floating_to_chars_precision):
7201         Relax the condition that guards the printf code path to accept
7202         F128_type as well as long double.
7203
7204 2021-02-24  Cassio Neri  <cassio.neri@gmail.com>
7205
7206         * include/std/chrono (year_month_day_last:day): New
7207         implementation.
7208
7209 2021-02-24  Cassio Neri  <cassio.neri@gmail.com>
7210
7211         * include/std/chrono (year::is_leap): New implementation.
7212         * testsuite/std/time/year/2.cc: New test.
7213
7214 2021-02-24  Cassio Neri  <cassio.neri@gmail.com>
7215
7216         * include/std/chrono (year_month_day::_M_days_since_epoch):
7217         New implementation.
7218         * testsuite/std/time/year_month_day/4.cc: New test.
7219
7220 2021-02-24  Cassio Neri  <cassio.neri@gmail.com>
7221
7222         * include/std/chrono (year_month_day::_S_from_days): New
7223         implementation.
7224         * testsuite/std/time/year_month_day/3.cc: New test.
7225
7226 2021-02-24  Patrick Palka  <ppalka@redhat.com>
7227
7228         PR libstdc++/98384
7229         * testsuite/20_util/to_chars/long_double.cc: Include <optional>.
7230         (test01): Simplify verifying the nearby values by using a
7231         2-iteration loop and a dedicated output buffer to check that the
7232         nearby values are different.  Factor out the printf-based
7233         verification into a local function, and check that the leading
7234         hex digits agree before comparing to the output of printf.  Also
7235         verify the output by round-tripping it through from_chars.
7236
7237 2021-02-24  Jonathan Wakely  <jwakely@redhat.com>
7238
7239         PR libstdc++/98389
7240         * config/abi/pre/gnu.ver (GLIBCXX_3.4.29): Do not match to_chars
7241         symbols for long double arguments mangled as 'g'.
7242         * config/os/gnu-linux/ldbl-extra.ver: Likewise.
7243         * config/os/gnu-linux/ldbl-ieee128-extra.ver: Likewise.
7244         * src/c++17/Makefile.am [GLIBCXX_LDBL_ALT128_COMPAT_TRUE]:
7245         Use -mabi=ibmlongdouble for floating_to_chars.cc.
7246         * src/c++17/Makefile.in: Regenerate.
7247         * src/c++17/floating_to_chars.cc (floating_type_traits_binary128):
7248         New type defining type traits of IEEE binary128 format.
7249         (floating_type_traits<__float128>): Define specialization.
7250         (floating_type_traits<long double>): Define in terms of
7251         floating_type_traits_binary128 when appropriate.
7252         (floating_to_shortest_scientific): Handle __float128.
7253         (sprintf_ld): New function template for printing a long double
7254         or __ieee128 value using sprintf.
7255         (__floating_to_chars_shortest, __floating_to_chars_precision):
7256         Use sprintf_ld.
7257         (to_chars): Define overloads for __float128.
7258
7259 2021-02-24  Jonathan Wakely  <jwakely@redhat.com>
7260
7261         * testsuite/17_intro/names.cc: Undefine 'u' on powerpc*-linux*.
7262
7263 2021-02-23  Martin Sebor  <msebor@redhat.com>
7264
7265         PR c++/99074
7266         * libsupc++/dyncast.cc (__dynamic_cast): Return null when
7267         first argument is null.
7268
7269 2021-02-23  Jakub Jelinek  <jakub@redhat.com>
7270
7271         PR libstdc++/99181
7272         * testsuite/21_strings/char_traits/requirements/char/99181.cc: New
7273         test.
7274
7275 2021-02-23  Jakub Jelinek  <jakub@redhat.com>
7276
7277         PR libstdc++/99181
7278         * include/bits/char_traits.h (char_traits<char>::compare): For
7279         constexpr evaluation don't call
7280         __gnu_cxx::char_traits<char_type>::compare but do the comparison loop
7281         directly.
7282
7283 2021-02-23  Jakub Jelinek  <jakub@redhat.com>
7284
7285         PR libstdc++/97549
7286         * include/pstl/parallel_backend_serial.h: Remove __pstl::__par_backend.
7287
7288 2021-02-23  Patrick Palka  <ppalka@redhat.com>
7289
7290         PR libstdc++/98384
7291         * src/c++17/floating_to_chars.cc (get_ieee_repr): Extract
7292         the high- and low-order parts from an IBM long double value
7293         in an endian-agnostic way.
7294
7295 2021-02-19  Jonathan Wakely  <jwakely@redhat.com>
7296
7297         * include/bits/atomic_wait.h (__thread_relax()): Call
7298         __thread_yield() not __gthread_yield().
7299
7300 2021-02-15  Jonathan Wakely  <jwakely@redhat.com>
7301
7302         * include/bits/atomic_wait.h (__thread_yield()): Check
7303         _GLIBCXX_HAS_GTHREADS before using __gthread_yield.
7304         (__thread_relax()): Use __thread_yield() instead of repeating
7305         the preprocessor checks for __gthread_yield.
7306
7307 2021-02-15  Jonathan Wakely  <jwakely@redhat.com>
7308
7309         * include/std/mutex (once_flag::_M_activate()): Add explicit
7310         return statement for passive case.
7311         (once_flag::_M_finish(bool)): Use reserved name for parameter.
7312
7313 2021-02-14  Jonathan Wakely  <jwakely@redhat.com>
7314
7315         PR libstdc++/99096
7316         * testsuite/util/testsuite_fs.h: Always include <unistd.h>.
7317
7318 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
7319
7320         PR libstdc++/88881
7321         * src/c++17/fs_ops.cc (fs::symlink_status): Re-enable workaround.
7322
7323 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
7324
7325         * doc/xml/manual/status_cxx2014.xml: Document implementation
7326         specific properties of std::experimental::filesystem::rename.
7327         * doc/xml/manual/status_cxx2017.xml: Document implementation
7328         specific properties of std::filesystem::rename.
7329         * doc/html/*: Regenerate.
7330         * src/c++17/fs_ops.cc (fs::rename): Implement correct behaviour
7331         for directories on Windows.
7332         * src/filesystem/ops-common.h (__gnu_posix::rename): Use
7333         MoveFileExW on Windows.
7334         * testsuite/27_io/filesystem/operations/rename.cc: New test.
7335         * testsuite/experimental/filesystem/operations/rename.cc: New test.
7336
7337 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
7338
7339         * testsuite/util/testsuite_fs.h (nonexistent_path): Add
7340         random number to the path.
7341
7342 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
7343
7344         * include/experimental/internet (address_v6::to_string): Include
7345         scope ID in string.
7346         * testsuite/experimental/net/internet/address/v6/members.cc:
7347         Test to_string() results.
7348
7349 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
7350
7351         * include/experimental/internet (address_v6::any): Avoid using
7352         memcpy in constexpr function.
7353         (address_v6::loopback): Likewise.
7354         (make_address_v6): Fix missing return statements on error paths.
7355         * include/experimental/io_context: Avoid -Wdangling-else
7356         warning.
7357         * testsuite/experimental/net/internet/address/v4/members.cc:
7358         Remove unused variables.
7359         * testsuite/experimental/net/internet/address/v6/members.cc:
7360         New test.
7361
7362 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
7363
7364         * include/bits/shared_ptr_base.h (__shared_ptr::_M_get_deleter):
7365         Add unused attribute to parameter.
7366         * src/c++11/shared_ptr.cc (_Sp_make_shared_tag::_S_eq):
7367         Likewise.
7368
7369 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
7370
7371         * testsuite/27_io/basic_ostream/emit/1.cc: Expect test to fail
7372         if -fno-rtti is used.
7373         * testsuite/30_threads/async/forced_unwind.cc: Expect test
7374         to abort if -fno-rtti is used.
7375
7376 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
7377
7378         * testsuite/util/testsuite_allocator.h (memory_resource):
7379         Remove requirement for RTTI and exceptions to be enabled.
7380
7381 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
7382
7383         * testsuite/27_io/basic_istringstream/rdbuf/char/2832.cc: Use
7384         static_cast when RTTI is disabled.
7385         * testsuite/27_io/basic_istringstream/rdbuf/wchar_t/2832.cc:
7386         Likewise.
7387         * testsuite/27_io/basic_ostringstream/rdbuf/char/2832.cc:
7388         Likewise.
7389         * testsuite/27_io/basic_ostringstream/rdbuf/wchar_t/2832.cc:
7390         Likewise.
7391         * testsuite/27_io/basic_stringstream/str/char/2.cc:
7392         Likewise.
7393         * testsuite/27_io/basic_stringstream/str/wchar_t/2.cc:
7394         Likewise.
7395
7396 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
7397
7398         * include/std/ostream (__syncbuf_base::_S_get): Mark parameter
7399         as unused and only use dynamic_cast when RTTI is enabled.
7400
7401 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
7402
7403         PR libstdc++/99077
7404         * src/c++11/cxx11-ios_failure.cc (__ios_failure(const char*, int)):
7405         Change int parameter to error_code, to match std::ios_failure.
7406         (__throw_ios_failure(const char*, int)): Construct error_code
7407         from int parameter.
7408
7409 2021-02-11  Jonathan Wakely  <jwakely@redhat.com>
7410
7411         * libsupc++/eh_ptr.cc (_GLIBCXX_EH_PTR_RELOPS_COMPAT): Define
7412         new macro.
7413         * libsupc++/exception_ptr.h (_GLIBCXX_EH_PTR_USED): Check new
7414         macro instead of _GLIBCXX_EH_PTR_COMPAT.
7415         (operator==): Likewise.
7416
7417 2021-02-11  Jonathan Wakely  <jwakely@redhat.com>
7418
7419         PR libstdc++/99058
7420         * doc/xml/manual/status_cxx2011.xml: Document when support
7421         became stable.
7422         * doc/xml/manual/status_cxx2014.xml: Likewise.
7423         * doc/xml/manual/status_cxx2017.xml: Likewise.
7424         * doc/html/manual/status.html: Regenerate.
7425
7426 2021-02-10  Jonathan Wakely  <jwakely@redhat.com>
7427
7428         PR libstdc++/88881
7429         * src/c++17/fs_ops.cc (fs::status): Re-enable workaround.
7430
7431 2021-02-10  Jonathan Wakely  <jwakely@redhat.com>
7432
7433         * src/c++17/fs_ops.cc (fs::create_hard_link, fs::equivalent)
7434         (fs::remove): Use std::system_category() for error codes from
7435         GetLastError().
7436         * src/filesystem/ops.cc (fs::create_hard_link, fs::remove):
7437         Likewise.
7438
7439 2021-02-10  Jonathan Wakely  <jwakely@redhat.com>
7440
7441         * testsuite/27_io/filesystem/operations/proximate.cc: Fix typo
7442         in __MINGW32__ macro name.
7443         * testsuite/27_io/filesystem/path/compare/lwg2936.cc: Likewise.
7444         * testsuite/27_io/filesystem/path/generation/proximate.cc:
7445         Likewise.
7446         * testsuite/27_io/filesystem/path/generation/relative.cc:
7447         Likewise.
7448         * testsuite/util/testsuite_fs.h: Likewise.
7449
7450 2021-02-09  François Dumont  <fdumont@gcc.gnu.org>
7451
7452         * include/bits/stl_tree.h
7453         (__has_is_transparent, __has_is_transparent_t): Move...
7454         * include/bits/stl_function.h: ...here.
7455         * include/bits/hashtable_policy.h (_Hash_code_base<>::_M_hash_code_tr): New..
7456         (_Hashtable_base<>::_M_equals_tr): New.
7457         * include/bits/hashtable.h (_Hashtable<>::_M_find_tr, _Hashtable<>::_M_count_tr,
7458         _Hashtable<>::_M_equal_range_tr): New member function templates to perform
7459         heterogeneous lookup.
7460         (_Hashtable<>::_M_find_before_node_tr): New.
7461         (_Hashtable<>::_M_find_node_tr): New.
7462         * include/bits/unordered_map.h (unordered_map::find<>, unordered_map::count<>,
7463         unordered_map::contains<>, unordered_map::equal_range<>): New member function
7464         templates to perform heterogeneous lookup.
7465         (unordered_multimap::find<>, unordered_multimap::count<>,
7466         unordered_multimap::contains<>, unordered_multimap::equal_range<>): Likewise.
7467         * include/bits/unordered_set.h  (unordered_set::find<>, unordered_set::count<>,
7468         unordered_set::contains<>, unordered_set::equal_range<>): Likewise.
7469         (unordered_multiset::find<>, unordered_multiset::count<>,
7470         unordered_multiset::contains<>, unordered_multiset::equal_range<>): Likewise.
7471         * include/debug/unordered_map
7472         (unordered_map::find<>, unordered_map::equal_range<>): Likewise.
7473         (unordered_multimap::find<>, unordered_multimap::equal_range<>): Likewise.
7474         * include/debug/unordered_set
7475         (unordered_set::find<>, unordered_set::equal_range<>): Likewise.
7476         (unordered_multiset::find<>, unordered_multiset::equal_range<>): Likewise.
7477         * testsuite/23_containers/unordered_map/operations/1.cc: New test.
7478         * testsuite/23_containers/unordered_multimap/operations/1.cc: New test.
7479         * testsuite/23_containers/unordered_multiset/operations/1.cc: New test.
7480         * testsuite/23_containers/unordered_set/operations/1.cc: New test.
7481
7482 2021-02-09  François Dumont  <fdumont@gcc.gnu.org>
7483
7484         * include/bits/stl_deque.h
7485         (std::operator-(deque::iterator, deque::iterator)): Replace if/then with
7486         a null pointer test.
7487
7488 2021-02-09  Jonathan Wakely  <jwakely@redhat.com>
7489
7490         * testsuite/27_io/filesystem/operations/remove_all.cc: Remove
7491         test directory after making it writable again.
7492         * testsuite/experimental/filesystem/operations/remove_all.cc:
7493         Likewise.
7494
7495 2021-02-09  Jonathan Wakely  <jwakely@redhat.com>
7496
7497         PR libstdc++/99021
7498         * include/std/coroutine (coroutine_handle<P>::from_address): Add
7499         noexcept.
7500
7501 2021-02-09  Vladimir Vishnevsky  <vv.os.swe@gmail.com>
7502
7503         * include/ext/stdio_sync_filebuf.h: Remove unused <unistd.h>.
7504         * src/c++17/fs_ops.cc (fs::permissions): Qualify mode_t.
7505
7506 2021-02-09  Jakub Jelinek  <jakub@redhat.com>
7507
7508         PR middle-end/98465
7509         * include/bits/basic_string.tcc (basic_string::_M_replace): When __s
7510         points to the characters moved by earlier _S_move, compute the source
7511         address using expression based on the __p pointer rather than __s
7512         pointer.
7513
7514 2021-02-03  Jonathan Wakely  <jwakely@redhat.com>
7515
7516         * testsuite/19_diagnostics/error_code/operators/not_equal.cc:
7517         Add comparison with same category and different values.
7518         * testsuite/19_diagnostics/error_code/operators/less.cc:
7519         Likewise. Fix comparison involving different categories.
7520         * testsuite/19_diagnostics/error_code/operators/three_way.cc:
7521         Likewise.
7522         * testsuite/19_diagnostics/error_condition/operators/less.cc:
7523         Add comment.
7524         * testsuite/19_diagnostics/error_condition/operators/three_way.cc:
7525         Likewise.
7526
7527 2021-02-03  yaozhongxiao  <yaozhongxiao@linux.alibaba.com>
7528
7529         * include/experimental/bits/simd_neon.h: Replace repeated vpadd
7530         calls with a single vaddv for aarch64.
7531
7532 2021-02-03  Matthias Kretz  <kretz@kde.org>
7533
7534         * testsuite/Makefile.am: Warn about the workaround. Add
7535         -fno-tree-vrp to CXXFLAGS passed to the check_simd script.
7536         Improve initial user feedback from make check-simd.
7537         * testsuite/Makefile.in: Regenerated.
7538
7539 2021-02-03  Matthias Kretz  <kretz@kde.org>
7540
7541         * include/experimental/bits/simd.h: Add __detail::_Minimum and
7542         __detail::_Maximum to use them as _BinaryOperation to _S_reduce.
7543         Add hmin and hmax overloads for simd and const_where_expression.
7544         * include/experimental/bits/simd_scalar.h
7545         (_SimdImplScalar::_S_reduce): Make unused _BinaryOperation
7546         parameter const-ref to allow calling _S_reduce with an rvalue.
7547         * testsuite/experimental/simd/tests/reductions.cc: Add tests for
7548         hmin and hmax. Since the compiler statically determined that all
7549         tests pass, repeat the test after a call to make_value_unknown.
7550
7551 2021-02-03  Matthias Kretz  <kretz@kde.org>
7552
7553         * testsuite/experimental/simd/tests/bits/verify.h (verify): Add
7554         instruction pointer data member. Ensure that the `if (m_failed)`
7555         branch is always inlined into the calling code. The body of the
7556         conditional can still be a function call. Move the get_ip call
7557         into the verify ctor to simplify the ctor calls.
7558         (COMPARE): Don't mention the use of all_of for reduction of a
7559         simd_mask. It only distracts from the real issue.
7560
7561 2021-02-03  Matthias Kretz  <kretz@kde.org>
7562
7563         * testsuite/experimental/simd/driver.sh: Abstract reading test
7564         options into read_src_option function. Read skip, only,
7565         expensive, and xfail via read_src_option. Add timeout and
7566         timeout-factor options and adjust timeout variable accordingly.
7567         * testsuite/experimental/simd/tests/loadstore.cc: Set
7568         timeout-factor 2.
7569
7570 2021-02-03  Matthias Kretz  <kretz@kde.org>
7571
7572         * testsuite/experimental/simd/driver.sh: When handling the pipe
7573         to log (and on verbose to stdout) count the lines. If it exceeds
7574         1000 log the issue and exit 125, which is then handled as a
7575         failure.
7576
7577 2021-02-03  Matthias Kretz  <kretz@kde.org>
7578
7579         * testsuite/experimental/simd/tests/hypot3_fma.cc: Add skip:
7580         markup for long double on powerpc64*.
7581
7582 2021-02-03  Matthias Kretz  <kretz@kde.org>
7583
7584         * include/experimental/bits/simd.h: Add __have_power10vec
7585         conditional on _ARCH_PWR10.
7586         * include/experimental/bits/simd_builtin.h: Forward declare
7587         _MaskImplPpc and use it as _MaskImpl when __ALTIVEC__ is
7588         defined.
7589         (_MaskImplBuiltin::_S_some_of): Call _S_popcount from the
7590         _SuperImpl for optimizations and correctness.
7591         * include/experimental/bits/simd_ppc.h: Add _MaskImplPpc.
7592         (_MaskImplPpc::_S_popcount): Implement via vec_cntm for POWER10.
7593         Otherwise, for >=int use -vec_sums divided by a sizeof factor.
7594         For <int use -vec_sums(vec_sum4s(...)) to sum all mask entries.
7595
7596 2021-02-03  Matthias Kretz  <kretz@kde.org>
7597
7598         * testsuite/experimental/simd/driver.sh: Remove executable on
7599         SIGINT. Process compiler and test executable output: In verbose
7600         mode print messages immediately, limited to 1000 lines and
7601         breaking long lines to below $COLUMNS (or 1024 if not set).
7602         Communicating the exit status of the compiler / test with the
7603         necessary pipe is done via a message through stdout/-in.
7604
7605 2021-02-03  Matthias Kretz  <kretz@kde.org>
7606
7607         * testsuite/Makefile.am: Ensure .simd.summary is empty before
7608         collecting a new summary.
7609         * testsuite/Makefile.in: Regenerate.
7610
7611 2021-02-03  Matthias Kretz  <kretz@kde.org>
7612
7613         * testsuite/experimental/simd/generate_makefile.sh: Use
7614         different variables internally than documented for user
7615         overrides. This makes internal append/prepend work as intended.
7616
7617 2021-02-03  Matthias Kretz  <kretz@kde.org>
7618
7619         * testsuite/experimental/simd/driver.sh (verify_test): Print
7620         test output on run xfail. Do not repeat lines from the log that
7621         were already printed on stdout.
7622         (test_selector): Make the compiler flags pattern usable as a
7623         substring selector.
7624         (toplevel): Trap on SIGINT and remove the log and sum files.
7625         Call timout with --foreground to quickly terminate on SIGINT.
7626         * testsuite/experimental/simd/generate_makefile.sh: Simplify run
7627         targets via target patterns. Default DRIVEROPTS to -v for run
7628         targets. Remove log and sum files after completion of the run
7629         target (so that it's always recompiled).
7630         Place help text into text file for reasonable 'make help'
7631         performance.
7632
7633 2021-02-03  Matthias Kretz  <kretz@kde.org>
7634
7635         * include/experimental/bits/simd.h: Remove unnecessary static
7636         assertion. Allow sizeof(8) integer __intrinsic_type to enable
7637         the necessary mask type.
7638
7639 2021-02-03  Matthias Kretz  <kretz@kde.org>
7640
7641         * include/experimental/bits/simd.h: Let __intrinsic_type<long
7642         double, N> be valid if sizeof(long double) == sizeof(double) and
7643         use a __vector double as member type.
7644
7645 2021-02-03  Matthias Kretz  <kretz@kde.org>
7646
7647         * include/experimental/bits/simd.h (__is_intrinsic_type): New
7648         internal type trait. Alias for __is_vector_type on x86.
7649         (_VectorTraitsImpl): Enable for __intrinsic_type in addition for
7650         __vector_type.
7651         (__intrin_bitcast): Allow casting to & from vector & intrinsic
7652         types.
7653         (__intrinsic_type): Explicitly specialize for NEON intrinsic
7654         vector types.
7655
7656 2021-02-03  Matthias Kretz  <kretz@kde.org>
7657
7658         * testsuite/experimental/simd/driver.sh: Implement skip, only,
7659         expensive, and xfail markers. They can select on type, ABI tag
7660         subset number, target-triplet, and compiler flags.
7661         * testsuite/experimental/simd/generate_makefile.sh: The summary
7662         now includes lines for unexpected passes and expected failures.
7663         If the skip or only markers are only conditional on the type, do
7664         not generate rules for those types.
7665         * testsuite/experimental/simd/tests/abs.cc: Mark test expensive
7666         for ABI tag subsets 1-9.
7667         * testsuite/experimental/simd/tests/algorithms.cc: Ditto.
7668         * testsuite/experimental/simd/tests/broadcast.cc: Ditto.
7669         * testsuite/experimental/simd/tests/casts.cc: Ditto.
7670         * testsuite/experimental/simd/tests/generator.cc: Ditto.
7671         * testsuite/experimental/simd/tests/integer_operators.cc: Ditto.
7672         * testsuite/experimental/simd/tests/loadstore.cc: Ditto.
7673         * testsuite/experimental/simd/tests/mask_broadcast.cc: Ditto.
7674         * testsuite/experimental/simd/tests/mask_conversions.cc: Ditto.
7675         * testsuite/experimental/simd/tests/mask_implicit_cvt.cc: Ditto.
7676         * testsuite/experimental/simd/tests/mask_loadstore.cc: Ditto.
7677         * testsuite/experimental/simd/tests/mask_operator_cvt.cc: Ditto.
7678         * testsuite/experimental/simd/tests/mask_operators.cc: Ditto.
7679         * testsuite/experimental/simd/tests/mask_reductions.cc: Ditto.
7680         * testsuite/experimental/simd/tests/operator_cvt.cc: Ditto.
7681         * testsuite/experimental/simd/tests/operators.cc: Ditto.
7682         * testsuite/experimental/simd/tests/reductions.cc: Ditto.
7683         * testsuite/experimental/simd/tests/simd.cc: Ditto.
7684         * testsuite/experimental/simd/tests/split_concat.cc: Ditto.
7685         * testsuite/experimental/simd/tests/splits.cc: Ditto.
7686         * testsuite/experimental/simd/tests/where.cc: Ditto.
7687         * testsuite/experimental/simd/tests/fpclassify.cc: Ditto. In
7688         addition replace "test only floattypes" marker by unconditional
7689         "float|double|ldouble" only marker.
7690         * testsuite/experimental/simd/tests/frexp.cc: Ditto.
7691         * testsuite/experimental/simd/tests/hypot3_fma.cc: Ditto.
7692         * testsuite/experimental/simd/tests/ldexp_scalbn_scalbln_modf.cc:
7693         Ditto.
7694         * testsuite/experimental/simd/tests/logarithm.cc: Ditto.
7695         * testsuite/experimental/simd/tests/math_1arg.cc: Ditto.
7696         * testsuite/experimental/simd/tests/math_2arg.cc: Ditto.
7697         * testsuite/experimental/simd/tests/remqo.cc: Ditto.
7698         * testsuite/experimental/simd/tests/trigonometric.cc: Ditto.
7699         * testsuite/experimental/simd/tests/trunc_ceil_floor.cc: Ditto.
7700         * testsuite/experimental/simd/tests/sincos.cc: Ditto. In
7701         addition, xfail on run because the reference data is missing.
7702
7703 2021-02-02  Jonathan Wakely  <jwakely@redhat.com>
7704
7705         * doc/xml/manual/status_cxx2011.xml: Remove stray table cell.
7706         * doc/xml/manual/status_cxx2014.xml: Likewise.
7707         * doc/xml/manual/status_cxx2017.xml: Likewise.
7708         * doc/html/manual/status.html: Regenerate.
7709
7710 2021-02-01  François Dumont  <fdumont@gcc.gnu.org>
7711
7712         PR libstdc++/70303
7713         * include/bits/stl_deque.h (std::deque<>::operator-(iterator, iterator)):
7714         Return 0 if both iterators are value-initialized.
7715         * testsuite/23_containers/deque/70303.cc: New test.
7716         * testsuite/23_containers/vector/70303.cc: New test.
7717
7718 2021-02-01  Jonathan Wakely  <jwakely@redhat.com>
7719
7720         * doc/xml/manual/status_cxx2011.xml: Update std::call_once
7721         status.
7722         * doc/xml/manual/status_cxx2014.xml: Likewise.
7723         * doc/xml/manual/status_cxx2017.xml: Likewise. Update
7724         std::from_chars and std::to_chars status. Fix formatting.
7725         * doc/html/manual/status.html: Regenerate.
7726
7727 2021-01-28  Jonathan Wakely  <jwakely@redhat.com>
7728
7729         * include/experimental/bits/numeric_traits.h: Update copyright
7730         dates.
7731         * include/experimental/bits/simd.h: Likewise.
7732         * include/experimental/bits/simd_builtin.h: Likewise.
7733         * include/experimental/bits/simd_converter.h: Likewise.
7734         * include/experimental/bits/simd_detail.h: Likewise.
7735         * include/experimental/bits/simd_fixed_size.h: Likewise.
7736         * include/experimental/bits/simd_math.h: Likewise.
7737         * include/experimental/bits/simd_neon.h: Likewise.
7738         * include/experimental/bits/simd_ppc.h: Likewise.
7739         * include/experimental/bits/simd_scalar.h: Likewise.
7740         * include/experimental/bits/simd_x86.h: Likewise.
7741         * include/experimental/bits/simd_x86_conversions.h: Likewise.
7742         * include/experimental/simd: Likewise.
7743         * testsuite/experimental/simd/*: Likewise.
7744
7745 2021-01-27  Jonathan Wakely  <jwakely@redhat.com>
7746
7747         * doc/xml/manual/status_cxx2017.xml: Replace invalid entity.
7748         * doc/html/*: Regenerate.
7749
7750 2021-01-27  Jonathan Wakely  <jwakely@redhat.com>
7751
7752         * testsuite/experimental/simd/generate_makefile.sh: Use printf
7753         instead of echo when printing escape characters.
7754
7755 2021-01-27  Matthias Kretz  <kretz@kde.org>
7756
7757         * scripts/check_simd: New file. This script is called from the
7758         the check-simd target. It determines a set of compiler flags and
7759         simulator setups for calling generate_makefile.sh and passes the
7760         information back to the check-simd target, which recurses to the
7761         generated Makefiles.
7762         * scripts/create_testsuite_files: Remove files below simd/tests/
7763         from testsuite_files and place them in testsuite_files_simd.
7764         * testsuite/Makefile.am: Add testsuite_files_simd. Add
7765         check-simd target.
7766         * testsuite/Makefile.in: Regenerate.
7767         * testsuite/experimental/simd/driver.sh: New file. This script
7768         compiles and runs a given simd test, logging its output and
7769         status. It uses the timeout command to implement compile and
7770         test timeouts.
7771         * testsuite/experimental/simd/generate_makefile.sh: New file.
7772         This script generates a Makefile which uses driver.sh to compile
7773         and run the tests and collect the logs into a single log file.
7774         * testsuite/experimental/simd/tests/abs.cc: New file. Tests
7775         abs(simd).
7776         * testsuite/experimental/simd/tests/algorithms.cc: New file.
7777         Tests min/max(simd, simd).
7778         * testsuite/experimental/simd/tests/bits/conversions.h: New
7779         file. Contains functions to support tests involving conversions.
7780         * testsuite/experimental/simd/tests/bits/make_vec.h: New file.
7781         Support functions make_mask and make_vec.
7782         * testsuite/experimental/simd/tests/bits/mathreference.h: New
7783         file. Support functions to supply precomputed math function
7784         reference data.
7785         * testsuite/experimental/simd/tests/bits/metahelpers.h: New
7786         file. Support code for SFINAE testing.
7787         * testsuite/experimental/simd/tests/bits/simd_view.h: New file.
7788         * testsuite/experimental/simd/tests/bits/test_values.h: New
7789         file. Test functions to easily drive a test with simd objects
7790         initialized from a given list of values and a range of random
7791         values.
7792         * testsuite/experimental/simd/tests/bits/ulp.h: New file.
7793         Support code to determine the ULP distance of simd objects.
7794         * testsuite/experimental/simd/tests/bits/verify.h: New file.
7795         Test framework for COMPARE'ing simd objects and instantiating
7796         the test templates with value_type and ABI tag.
7797         * testsuite/experimental/simd/tests/broadcast.cc: New file. Test
7798         simd broadcasts.
7799         * testsuite/experimental/simd/tests/casts.cc: New file. Test
7800         simd casts.
7801         * testsuite/experimental/simd/tests/fpclassify.cc: New file.
7802         Test floating-point classification functions.
7803         * testsuite/experimental/simd/tests/frexp.cc: New file. Test
7804         frexp(simd).
7805         * testsuite/experimental/simd/tests/generator.cc: New file. Test
7806         simd generator constructor.
7807         * testsuite/experimental/simd/tests/hypot3_fma.cc: New file.
7808         Test 3-arg hypot(simd,simd,simd) and fma(simd,simd,sim).
7809         * testsuite/experimental/simd/tests/integer_operators.cc: New
7810         file. Test integer operators.
7811         * testsuite/experimental/simd/tests/ldexp_scalbn_scalbln_modf.cc:
7812         New file. Test ldexp(simd), scalbn(simd), scalbln(simd), and
7813         modf(simd).
7814         * testsuite/experimental/simd/tests/loadstore.cc: New file. Test
7815         (converting) simd loads and stores.
7816         * testsuite/experimental/simd/tests/logarithm.cc: New file. Test
7817         log*(simd).
7818         * testsuite/experimental/simd/tests/mask_broadcast.cc: New file.
7819         Test simd_mask broadcasts.
7820         * testsuite/experimental/simd/tests/mask_conversions.cc: New
7821         file. Test simd_mask conversions.
7822         * testsuite/experimental/simd/tests/mask_implicit_cvt.cc: New
7823         file. Test simd_mask implicit conversions.
7824         * testsuite/experimental/simd/tests/mask_loadstore.cc: New file.
7825         Test simd_mask loads and stores.
7826         * testsuite/experimental/simd/tests/mask_operator_cvt.cc: New
7827         file. Test simd_mask operators convert as specified.
7828         * testsuite/experimental/simd/tests/mask_operators.cc: New file.
7829         Test simd_mask compares, subscripts, and negation.
7830         * testsuite/experimental/simd/tests/mask_reductions.cc: New
7831         file. Test simd_mask reductions.
7832         * testsuite/experimental/simd/tests/math_1arg.cc: New file. Test
7833         1-arg math functions on simd.
7834         * testsuite/experimental/simd/tests/math_2arg.cc: New file. Test
7835         2-arg math functions on simd.
7836         * testsuite/experimental/simd/tests/operator_cvt.cc: New file.
7837         Test implicit conversions on simd binary operators behave as
7838         specified.
7839         * testsuite/experimental/simd/tests/operators.cc: New file. Test
7840         simd compares, subscripts, not, unary minus, plus, minus,
7841         multiplies, divides, increment, and decrement.
7842         * testsuite/experimental/simd/tests/reductions.cc: New file.
7843         Test reduce(simd).
7844         * testsuite/experimental/simd/tests/remqo.cc: New file. Test
7845         remqo(simd).
7846         * testsuite/experimental/simd/tests/simd.cc: New file. Basic
7847         sanity checks of simd types.
7848         * testsuite/experimental/simd/tests/sincos.cc: New file. Test
7849         sin(simd) and cos(simd).
7850         * testsuite/experimental/simd/tests/split_concat.cc: New file.
7851         Test split(simd) and concat(simd, simd).
7852         * testsuite/experimental/simd/tests/splits.cc: New file. Test
7853         split(simd_mask).
7854         * testsuite/experimental/simd/tests/trigonometric.cc: New file.
7855         Test remaining trigonometric functions on simd.
7856         * testsuite/experimental/simd/tests/trunc_ceil_floor.cc: New
7857         file. Test trunc(simd), ceil(simd), and floor(simd).
7858         * testsuite/experimental/simd/tests/where.cc: New file. Test
7859         masked operations using where.
7860
7861 2021-01-27  Matthias Kretz  <kretz@kde.org>
7862
7863         * doc/xml/manual/status_cxx2017.xml: Add implementation status
7864         of the Parallelism TS 2. Document implementation-defined types
7865         and behavior.
7866         * include/Makefile.am: Add new headers.
7867         * include/Makefile.in: Regenerate.
7868         * include/experimental/simd: New file. New header for
7869         Parallelism TS 2.
7870         * include/experimental/bits/numeric_traits.h: New file.
7871         Implementation of P1841R1 using internal naming. Addition of
7872         missing IEC559 functionality query.
7873         * include/experimental/bits/simd.h: New file. Definition of the
7874         public simd interfaces and general implementation helpers.
7875         * include/experimental/bits/simd_builtin.h: New file.
7876         Implementation of the _VecBuiltin simd_abi.
7877         * include/experimental/bits/simd_converter.h: New file. Generic
7878         simd conversions.
7879         * include/experimental/bits/simd_detail.h: New file. Internal
7880         macros for the simd implementation.
7881         * include/experimental/bits/simd_fixed_size.h: New file. Simd
7882         fixed_size ABI specific implementations.
7883         * include/experimental/bits/simd_math.h: New file. Math
7884         overloads for simd.
7885         * include/experimental/bits/simd_neon.h: New file. Simd NEON
7886         specific implementations.
7887         * include/experimental/bits/simd_ppc.h: New file. Implement bit
7888         shifts to avoid invalid results for integral types smaller than
7889         int.
7890         * include/experimental/bits/simd_scalar.h: New file. Simd scalar
7891         ABI specific implementations.
7892         * include/experimental/bits/simd_x86.h: New file. Simd x86
7893         specific implementations.
7894         * include/experimental/bits/simd_x86_conversions.h: New file.
7895         x86 specific conversion optimizations. The conversion patterns
7896         work around missing conversion patterns in the compiler and
7897         should be removed as soon as PR85048 is resolved.
7898         * testsuite/experimental/simd/standard_abi_usable.cc: New file.
7899         Test that all (not all fixed_size<N>, though) standard simd and
7900         simd_mask types are usable.
7901         * testsuite/experimental/simd/standard_abi_usable_2.cc: New
7902         file. As above but with -ffast-math.
7903         * testsuite/libstdc++-dg/conformance.exp: Don't build simd tests
7904         from the standard test loop. Instead use
7905         check_vect_support_and_set_flags to build simd tests with the
7906         relevant machine flags.
7907
7908 2021-01-27  Jonathan Wakely  <jwakely@redhat.com>
7909
7910         PR libstdc++/66414
7911         * include/bits/string_view.tcc
7912         (basic_string_view::find(const CharT*, size_type, size_type)):
7913         Optimize.
7914
7915 2021-01-27  Paul Fee  <paul.f.fee@gmail.com>
7916
7917         * include/bits/basic_string.h (basic_string::contains): New
7918         member functions.
7919         * include/std/string_view (basic_string_view::contains):
7920         Likewise.
7921         * include/std/version (__cpp_lib_string_contains): Define.
7922         * testsuite/21_strings/basic_string/operations/starts_with/char/1.cc:
7923         Remove trailing whitespace.
7924         * testsuite/21_strings/basic_string/operations/starts_with/wchar_t/1.cc:
7925         Likewise.
7926         * testsuite/21_strings/basic_string/operations/contains/char/1.cc: New test.
7927         * testsuite/21_strings/basic_string/operations/contains/wchar_t/1.cc: New test.
7928         * testsuite/21_strings/basic_string_view/operations/contains/char/1.cc: New test.
7929         * testsuite/21_strings/basic_string_view/operations/contains/char/2.cc: New test.
7930         * testsuite/21_strings/basic_string_view/operations/contains/wchar_t/1.cc: New test.
7931
7932 2021-01-21  Jonathan Wakely  <jwakely@redhat.com>
7933
7934         * src/c++17/Makefile.in: Regenerate.
7935
7936 2021-01-20  David Edelsohn  <dje.gcc@gmail.com>
7937
7938         * config/os/aix/ctype_inline.h (bool ctype<char>:: is): Cast
7939         _OBJ_DATA subscript to unsigned char. Add _THREAD_SAFE access to
7940         __lc_type.
7941         (const char* ctype<char>:: is): Same.
7942
7943 2021-01-18  Jonathan Wakely  <jwakely@redhat.com>
7944
7945         PR libstdc++/98725
7946         * testsuite/20_util/unique_ptr/io/lwg2948.cc:  Do not try to
7947         write to a wide character stream if wide character support is
7948         disabled in the library.
7949
7950 2021-01-18  Jonathan Wakely  <jwakely@redhat.com>
7951
7952         * testsuite/27_io/basic_stringstream/cons/char/1.cc: Use
7953         stringbuf not wstringbuf.
7954
7955 2021-01-18  Jakub Jelinek  <jakub@redhat.com>
7956
7957         PR debug/98708
7958         * src/c++11/Makefile.am (cxx11-ios_failure-lt.s, cxx11-ios_failure.s):
7959         Compile with -gno-as-loc-support.
7960         * src/c++11/Makefile.in: Regenerated.
7961
7962 2021-01-16  H.J. Lu  <hjl.tools@gmail.com>
7963
7964         * testsuite/29_atomics/atomic_flag/test_and_set/explicit-hle.cc:
7965         Add -fcf-protection=none to -march=i486.
7966
7967 2021-01-14  François Dumont  <fdumont@gcc.gnu.org>
7968
7969         * testsuite/23_containers/deque/debug/98466.cc: Make it pre-C++11
7970         compliant.
7971
7972 2021-01-14  Alexandre Oliva  <oliva@adacore.com>
7973
7974         * testsuite/30_threads/future/members/poll.cc: Calibrate
7975         iteration count.
7976
7977 2021-01-14  François Dumont  <fdumont@gcc.gnu.org>
7978
7979         PR libstdc++/98466
7980         * include/bits/hashtable_policy.h (_Node_iterator_base()): Set _M_cur to nullptr.
7981         (_Node_iterator()): Make default.
7982         (_Node_const_iterator()): Make default.
7983         * include/debug/macros.h (__glibcxx_check_erae_range_after): Add _M_singular
7984         iterator checks.
7985         * include/debug/safe_iterator.h
7986         (_GLIBCXX_DEBUG_VERIFY_OPERANDS): Accept if both iterator are value initialized.
7987         * include/debug/safe_local_iterator.h (_GLIBCXX_DEBUG_VERIFY_OPERANDS):
7988         Likewise.
7989         * include/debug/safe_iterator.tcc (_Safe_iterator<>::_M_valid_range): Add
7990         _M_singular checks on input iterators.
7991         * src/c++11/debug.cc (_Safe_iterator_base::_M_can_compare): Remove _M_singular
7992         checks.
7993         * testsuite/23_containers/deque/debug/98466.cc: New test.
7994         * testsuite/23_containers/unordered_map/debug/98466.cc: New test.
7995
7996 2021-01-14  Jonathan Wakely  <jwakely@redhat.com>
7997
7998         PR libstdc++/98471
7999         * include/bits/fs_path.h (__throw_conversion_error): New
8000         function to throw or abort on character conversion errors.
8001         (__wstr_from_utf8): Move definition after filesystem_error has
8002         been defined. Use __throw_conversion_error.
8003         (path::_S_convert<_EcharT>): Use __throw_conversion_error.
8004         (path::_S_str_convert<_CharT, _Traits, _Allocator>): Likewise.
8005         (path::u8string): Likewise.
8006
8007 2021-01-14  Jonathan Wakely  <jwakely@redhat.com>
8008
8009         * include/std/barrier: Update copyright years. Fix whitespace.
8010         * include/std/version: Fix whitespace.
8011         * testsuite/30_threads/barrier/1.cc: Update copyright years.
8012         * testsuite/30_threads/barrier/2.cc: Likewise.
8013         * testsuite/30_threads/barrier/arrive.cc: Likewise.
8014         * testsuite/30_threads/barrier/arrive_and_drop.cc: Likewise.
8015         * testsuite/30_threads/barrier/arrive_and_wait.cc: Likewise.
8016         * testsuite/30_threads/barrier/completion.cc: Likewise.
8017
8018 2021-01-13  Jonathan Wakely  <jwakely@redhat.com>
8019
8020         * doc/doxygen/user.cfg.in (INPUT): Remove include/debug/array.
8021
8022 2021-01-10  David Edelsohn  <dje.gcc@gmail.com>
8023
8024         PR libstdc++/98613
8025         * testsuite/ext/vstring/cons/moveable.cc: Suppress false positive
8026         warning.
8027         * testsuite/ext/vstring/modifiers/assign/move_assign.cc: Same.
8028
8029 2021-01-08  Olivier Hainque  <hainque@adacore.com>
8030
8031         * testsuite/20_util/bind/ref_neg.cc: Tweak the
8032         dg-prune-output regex for out-of-build-tree contexts.
8033
8034 2021-01-07  Thomas Rodgers  <trodgers@redhat.com>
8035
8036         * doc/doxygen/user.cfg.in: Add new header.
8037         * include/Makefile.am (std_headers): likewise.
8038         * include/Makefile.in: Regenerate.
8039         * include/precompiled/stdc++.h: Add new header.
8040         * include/std/barrier: New file.
8041         * include/std/version: Add __cpp_lib_barrier feature test macro.
8042         * testsuite/30_threads/barrier/1.cc: New test.
8043         * testsuite/30_threads/barrier/2.cc: Likewise.
8044         * testsuite/30_threads/barrier/arrive_and_drop.cc: Likewise.
8045         * testsuite/30_threads/barrier/arrive_and_wait.cc: Likewise.
8046         * testsuite/30_threads/barrier/arrive.cc: Likewise.
8047         * testsuite/30_threads/barrier/completion.cc: Likewise.
8048
8049 2021-01-07  Patrick Palka  <ppalka@redhat.com>
8050
8051         PR libstdc++/98384
8052         * testsuite/20_util/to_chars/long_double.cc: Use nexttowardl
8053         instead of the non-standard nextupl and nextdownl.
8054
8055 2021-01-05  Samuel Thibault  <samuel.thibault@ens-lyon.org>
8056
8057         * configure: Re-generate.
8058
8059 2021-01-05  Ed Smith-Rowland  <3dw4rd@verizon.net>
8060
8061         * include/precompiled/stdc++.h: Add <source_location> to C++20 section.
8062
8063 2021-01-01  Jakub Jelinek  <jakub@redhat.com>
8064
8065         * ChangeLog-2020: Rotate ChangeLog.  New file.
8066
8067 \f
8068 Copyright (C) 2021 Free Software Foundation, Inc.
8069
8070 Copying and distribution of this file, with or without modification,
8071 are permitted in any medium without royalty provided the copyright
8072 notice and this notice are preserved.