libstdc++-v3/ChangeLog

   1 2024-12-19  François Dumont  <frs.dumont@gmail.com>
   2
   3         PR libstdc++/57272
   4         * include/bits/stl_tree.h
   5         [_GLIBCXX_USE_ALLOC_PTR_FOR_RB_TREE]: New macro to control usage of the
   6         code required to support fancy allocator pointer type.
   7         (_Rb_tree_node_base::_Const_Base_ptr): Remove.
   8         (_Rb_tree_node_base::_S_minimum, _Rb_tree_node_base::_S_maximum): Remove
   9         overloads for _Const_Base_ptr.
  10         (_Rb_tree_node_base::_M_base_ptr()): New.
  11         (_Rb_tree_node::_Link_type): Remove.
  12         (_Rb_tree_node::_M_node_ptr()): New.
  13         (__rb_tree::_Node_base<>): New.
  14         (__rb_tree::_Header<>): New.
  15         (__rb_tree::_Node<>): New.
  16         (_Rb_tree_increment(const _Rb_tree_node_base*)): Remove declaration.
  17         (_Rb_tree_decrement(const _Rb_tree_node_base*)): Remove declaration.
  18         (_Rb_tree_iterator<>::_Self): Remove.
  19         (_Rb_tree_iterator<>::_Link_type): Rename into...
  20         (_Rb_tree_iterator<>::_Node_ptr): ...this.
  21         (_Rb_tree_const_iterator<>::_Link_type): Rename into...
  22         (_Rb_tree_const_iterator<>::_Node_ptr): ...this.
  23         (_Rb_tree_const_iterator<>::_M_const_cast): Remove.
  24         (_Rb_tree_const_iterator<>::_M_node): Change type into _Base_ptr.
  25         (__rb_tree::_Iterator<>): New.
  26         (__rb_tree::_Node_traits<>): New.
  27         (_Rb_tree<>::_Node_base, _Rb_tree::_Node): New.
  28         (_Rb_tree<>::_Link_type): Rename into...
  29         (_Rb_tree<>::_Node_ptr): ...this.
  30         (_Rb_tree<>::_Const_Base_ptr, _Rb_tree<>::_Const_Node_ptr): Remove.
  31         (_Rb_tree<>::_M_mbegin): Remove.
  32         (_Rb_tree<>::_M_begin_node()): New.
  33         (_S_key(const _Node&)): New.
  34         (_S_key(_Base_ptr)): New, call latter.
  35         (_S_key(_Node_ptr)): Likewise.
  36         (_Rb_tree<>::_S_left(_Const_Base_ptr)): Remove.
  37         (_Rb_tree<>::_S_right(_Const_Base_ptr)): Remove.
  38         (_Rb_tree<>::_S_maximum(_Const_Base_ptr)): Remove.
  39         (_Rb_tree<>::_S_minimum(_Const_Base_ptr)): Remove.
  40         * testsuite/23_containers/map/allocator/ext_ptr.cc: New test case.
  41         * testsuite/23_containers/multimap/allocator/ext_ptr.cc: New test case.
  42         * testsuite/23_containers/multiset/allocator/ext_ptr.cc: New test case.
  43         * testsuite/23_containers/set/allocator/ext_ptr.cc: New test case.
  44         * testsuite/23_containers/set/requirements/explicit_instantiation/alloc_ptr.cc:
  45         New test case.
  46         * testsuite/23_containers/set/requirements/explicit_instantiation/alloc_ptr_ignored.cc:
  47         New test case.
  48
  49 2024-12-19  Patrick Palka  <ppalka@redhat.com>
  50             Jonathan Wakely  <jwakely@redhat.com>
  51
  52         * include/Makefile.am: Add new header <flat_set>.
  53         * include/Makefile.in: Regenerate.
  54         * include/bits/version.def (__cpp_flat_set): Define.
  55         * include/bits/version.h: Regenerate
  56         * include/precompiled/stdc++.h: Include <flat_set>.
  57         * include/std/flat_set: New file.
  58         * src/c++23/std.cc.in: Export <flat_set>.
  59         * testsuite/23_containers/flat_multiset/1.cc: New test.
  60         * testsuite/23_containers/flat_set/1.cc: New test.
  61
  62 2024-12-19  Patrick Palka  <ppalka@redhat.com>
  63             Jonathan Wakely  <jwakely@redhat.com>
  64
  65         * include/Makefile.am: Add new header <flat_map>.
  66         * include/Makefile.in: Regenerate.
  67         * include/bits/alloc_traits.h (__not_allocator_like): New concept.
  68         * include/bits/stl_function.h (__transparent_comparator): Likewise.
  69         * include/bits/stl_iterator_base_types.h (__has_input_iter_cat):
  70         Likewise.
  71         * include/bits/uses_allocator.h (__allocator_for): Likewise.
  72         * include/bits/utility.h (sorted_unique_t): Define for C++23.
  73         (sorted_unique): Likewise.
  74         (sorted_equivalent_t): Likewise.
  75         (sorted_equivalent): Likewise.
  76         * include/bits/version.def (flat_map): Define.
  77         * include/bits/version.h: Regenerate.
  78         * include/precompiled/stdc++.h: Include <flat_map>.
  79         * include/std/flat_map: New file.
  80         * src/c++23/std.cc.in: Export <flat_map>.
  81         * testsuite/23_containers/flat_map/1.cc: New test.
  82         * testsuite/23_containers/flat_multimap/1.cc: New test.
  83
  84 2024-12-19  Patrick Palka  <ppalka@redhat.com>
  85
  86         * include/bits/ranges_base.h (__detail::__range_key_type):
  87         Define as per P1206R7.
  88         (__detail::__range_mapped_type): Likewise.
  89
  90 2024-12-18  François Dumont  <frs.dumont@gmail.com>
  91
  92         * include/bits/move.h (std::addressof): Call __builtin_addressof.
  93
  94 2024-12-18  Tamar Christina  <tamar.christina@arm.com>
  95
  96         * include/bits/hashtable.h
  97         (_M_find_before_node): Make it likely that the map has at least one
  98         entry and so we do at least one iteration.
  99
 100 2024-12-18  Jonathan Wakely  <jwakely@redhat.com>
 101
 102         PR libstdc++/118088
 103         * include/bits/stl_queue.h (priority_queue(priority_queue&&)):
 104         Clear the source object after moving from it.
 105         (priority_queue(priority_queue&&, const Alloc&)): Likewise.
 106         (operator=(priority_queue&&)): Likewise.
 107         * testsuite/23_containers/priority_queue/118088.cc: New test.
 108
 109 2024-12-18  Tamar Christina  <tamar.christina@arm.com>
 110
 111         * include/bits/hashtable.h: Inline _M_locate.
 112
 113 2024-12-18  Jonathan Wakely  <jwakely@redhat.com>
 114
 115         * include/bits/basic_string.h (__to_wstring_numeric): Add 'i'
 116         and 'I' to mapping.
 117
 118 2024-12-18  Luca Bacci  <luca.bacci982@gmail.com>
 119
 120         PR libstdc++/98723
 121         * include/bits/regex_compiler.tcc (_BracketMatcher::_M_apply):
 122         Only use transform_primary when an equivalence set is used.
 123
 124 2024-12-17  Jonathan Wakely  <jwakely@redhat.com>
 125
 126         * include/debug/safe_local_iterator.h (_GLIBCXX_DEBUG_VERIFY_OPERANDS):
 127         Add parentheses to avoid -Wparentheses warning.
 128
 129 2024-12-17  Jonathan Wakely  <jwakely@redhat.com>
 130
 131         PR libstdc++/118035
 132         * include/bits/deque.tcc (_M_range_insert_aux): Return
 133         immediately if inserting an empty range.
 134         * testsuite/23_containers/deque/modifiers/insert/118035.cc: New
 135         test.
 136
 137 2024-12-16  Jonathan Wakely  <jwakely@redhat.com>
 138
 139         * include/bits/hashtable_policy.h (_Local_iterator_base): Use
 140         default member-initializers.
 141
 142 2024-12-16  Jonathan Wakely  <jwakely@redhat.com>
 143
 144         * include/bits/hashtable_policy.h: Replace typedefs with
 145         alias-declarations. Remove redundant std:: qualification.
 146         (_Mod_range_hashing, _Mask_range_hashing): Remove adaptable
 147         function object typedefs.
 148
 149 2024-12-16  Jonathan Wakely  <jwakely@redhat.com>
 150
 151         * include/bits/hashtable_policy.h (_Hash_code_storage): Remove.
 152         (_Hash_obj_storage): New class template. Store the hash
 153         function as a union member instead of using a byte buffer.
 154         (_Local_iterator_base): Use _Hash_obj_storage instead of
 155         _Hash_code_storage, adjust members that construct and destroy
 156         the hash object.
 157         (_Local_iterator_base::_M_incr): Calculate bucket index.
 158
 159 2024-12-16  Jonathan Wakely  <jwakely@redhat.com>
 160
 161         * include/bits/hashtable.h (_Hashtable::swap): Swap hash
 162         function and equality predicate here. Inline allocator swap
 163         instead of using __alloc_on_swap.
 164         * include/bits/hashtable_policy.h (_Hashtable_ebo_helper):
 165         Replace EBO with no_unique_address attribute. Remove NTTP.
 166         (_Hash_code_base): Replace base class with data member using
 167         no_unique_address attribute.
 168         (_Hash_code_base::_M_swap): Remove.
 169         (_Hash_code_base::_M_hash): Remove.
 170         (_Hashtable_base): Replace base class with data member using
 171         no_unique_address attribute.
 172         (_Hashtable_base::_M_swap): Remove.
 173         (_Hashtable_alloc): Replace base class with data member using
 174         no_unique_address attribute.
 175
 176 2024-12-16  Jonathan Wakely  <jwakely@redhat.com>
 177
 178         PR libstdc++/57272
 179         * include/bits/forward_list.h (__fwd_list::_Node): Add
 180         user-provided special member functions to union.
 181         * include/bits/stl_list.h (__list::_Node): Likewise.
 182         (_Node_base::_M_hook, _Node_base::swap): Use _M_base() instead
 183         of std::pointer_traits::pointer_to.
 184         (_Node_base::_M_transfer): Likewise. Add noexcept.
 185         (_List_base::_M_put_node): Use 'if constexpr' to avoid using
 186         pointer_traits::pointer_to when not necessary.
 187         (_List_base::_M_destroy_node): Fix parameter to be the pointer
 188         type used internally, not the allocator's pointer.
 189         (list::_M_create_node): Likewise.
 190         * testsuite/23_containers/forward_list/requirements/explicit_instantiation/alloc_ptr.cc:
 191         Check explicit instantiation of non-trivial value type.
 192         * testsuite/23_containers/list/requirements/explicit_instantiation/alloc_ptr.cc:
 193         Likewise.
 194         * testsuite/23_containers/forward_list/requirements/explicit_instantiation/alloc_ptr_ignored.cc:
 195         Fix macro name.
 196         * testsuite/23_containers/list/requirements/explicit_instantiation/alloc_ptr_ignored.cc:
 197         Likewise.
 198
 199 2024-12-14  Abdo Eid  <abdoeid.eg@ieee.org>
 200
 201         * include/c_compatibility/wchar.h (fgetwc): Remove duplicate
 202         using-declaration.
 203
 204 2024-12-13  Patrick Palka  <ppalka@redhat.com>
 205
 206         PR libstdc++/112349
 207         * include/bits/ranges_algo.h (__min_fn::operator()): Turn local
 208         object __tmp into a reference.
 209         * include/bits/ranges_util.h (__max_fn::operator()): Likewise.
 210         * testsuite/25_algorithms/max/constrained.cc (test04): New test.
 211         * testsuite/25_algorithms/min/constrained.cc (test04): New test.
 212
 213 2024-12-13  Jonathan Wakely  <jwakely@redhat.com>
 214
 215         * include/std/spanstream (basic_spanbuf::seekoff): Return an
 216         error for invalid seekdir values.
 217
 218 2024-12-13  Jonathan Wakely  <jwakely@redhat.com>
 219
 220         * include/bits/ranges_cmp.h (not_equal_to): Make order of
 221         expressions in noexcept-specifier match the body.
 222         * testsuite/20_util/function_objects/range.cmp/not_equal_to.cc:
 223         Check noexcept.
 224
 225 2024-12-13  Jonathan Wakely  <jwakely@redhat.com>
 226
 227         * include/bits/regex.tcc: Fix -Wsign-compare warning.
 228
 229 2024-12-13  Jonathan Wakely  <jwakely@redhat.com>
 230
 231         * include/pstl/parallel_backend_tbb.h (__merge_func): Fix order
 232         of mem-initializers.
 233
 234 2024-12-13  Jonathan Wakely  <jwakely@redhat.com>
 235
 236         * testsuite/26_numerics/random/random_device/entropy.cc: Fix
 237         indentation to avoid -Wmisleading-indentation warning.
 238
 239 2024-12-12  Jonathan Wakely  <jwakely@redhat.com>
 240
 241         * testsuite/23_containers/unordered_map/modifiers/reserve.cc:
 242         Cast to size_t to fix -Wsign-compare warning.
 243         * testsuite/23_containers/unordered_set/hash_policy/71181.cc:
 244         Likewise.
 245         * testsuite/23_containers/unordered_set/insert/move_range.cc:
 246         Likewise.
 247
 248 2024-12-12  Jonathan Wakely  <jwakely@redhat.com>
 249
 250         * include/bits/hashtable_policy.h (_Local_iterator_base): Fix
 251         -Wsign-compare warnings.
 252
 253 2024-12-12  Jonathan Wakely  <jwakely@redhat.com>
 254
 255         * src/c++17/fs_dir.cc: Fix typo in comment.
 256
 257 2024-12-11  Jonathan Wakely  <jwakely@redhat.com>
 258
 259         PR libstdc++/109517
 260         PR libstdc++/109976
 261         * include/debug/helper_functions.h (__valid_range_aux): Treat
 262         all input iterator ranges as valid during constant evaluation.
 263
 264 2024-12-11  Jonathan Wakely  <jwakely@redhat.com>
 265
 266         PR libstdc++/106212
 267         * include/std/array (operator==): Use std::__equal_aux1 instead
 268         of std::equal.
 269         * testsuite/23_containers/array/comparison_operators/106212.cc:
 270         New test.
 271
 272 2024-12-11  Jonathan Wakely  <jwakely@redhat.com>
 273
 274         PR libstdc++/117966
 275         * include/std/span (span(T (&)[N])): Do not delegate to
 276         constructor that performs redundant checks.
 277         (span(array<T, N>&), span(const array<T, N>&)): Likewise.
 278         (span(Range&&), span(const span<T, N>&)): Likewise.
 279         * testsuite/23_containers/span/117966.cc: New test.
 280
 281 2024-12-11  Jonathan Wakely  <jwakely@redhat.com>
 282
 283         * include/std/generator (_Promise_alloc): Rename template
 284         parameter. Use __alloc_rebind to rebind allocator.
 285         (_Promise_alloc::operator new): Replace constraints with a
 286         static_assert in the body. Rename allocator parameter.
 287         (_Promise_alloc<void>::_M_allocate): Rename allocator parameter.
 288         Use __alloc_rebind to rebind allocator.
 289         (_Promise_alloc<void>::operator new): Rename allocator
 290         parameter.
 291         * testsuite/24_iterators/range_generators/alloc.cc: New test.
 292         * testsuite/24_iterators/range_generators/lwg3900.cc: New test.
 293
 294 2024-12-11  Jonathan Wakely  <jwakely@redhat.com>
 295
 296         * include/std/ostream (println): Pass stream's locale to
 297         std::format, as per LWG 4088.
 298         * testsuite/27_io/basic_ostream/print/1.cc: Check std::println
 299         with custom locale. Remove unused brit_punc class.
 300
 301 2024-12-10  Jonathan Wakely  <jwakely@redhat.com>
 302
 303         * include/bits/memory_resource.h (polymoprhic_allocator): Use
 304         feature test macro for P0339R6 features.
 305
 306 2024-12-10  Marek Polacek  <polacek@redhat.com>
 307
 308         PR c++/117788
 309         * testsuite/std/ranges/adaptors/conditionally_borrowed.cc: Add a
 310         FIXME, adjust.
 311
 312 2024-12-10  Jonathan Wakely  <jwakely@redhat.com>
 313
 314         * include/bits/stl_uninitialized.h (__is_bitwise_relocatable):
 315         Revert to depending on is_trivial.
 316
 317 2024-12-10  Giuseppe D'Angelo  <giuseppe.dangelo@kdab.com>
 318
 319         * include/std/type_traits: Deprecate is_trivial and
 320         is_trivial_v.
 321         * include/experimental/type_traits: Suppress the deprecation
 322         warning.
 323         * testsuite/20_util/is_trivial/requirements/explicit_instantiation.cc:
 324         Amend the test to suppress the deprecation warning.
 325         * testsuite/20_util/is_trivial/requirements/typedefs.cc:
 326         Likewise.
 327         * testsuite/20_util/is_trivial/value.cc: Likewise.
 328         * testsuite/20_util/variable_templates_for_traits.cc: Likewise.
 329         * testsuite/experimental/type_traits/value.cc: Likewise.
 330         * testsuite/18_support/max_align_t/requirements/2.cc: Update the
 331         test with P3247R2's new wording.
 332
 333 2024-12-10  Giuseppe D'Angelo  <giuseppe.dangelo@kdab.com>
 334
 335         * testsuite/20_util/specialized_algorithms/uninitialized_copy/102064.cc:
 336         Port away from is_trivial.
 337         * testsuite/20_util/specialized_algorithms/uninitialized_copy_n/102064.cc:
 338         Likewise.
 339         * testsuite/20_util/specialized_algorithms/uninitialized_default/94540.cc:
 340         Likewise.
 341         * testsuite/20_util/specialized_algorithms/uninitialized_default_n/94540.cc:
 342         Likewise.
 343         * testsuite/20_util/specialized_algorithms/uninitialized_fill/102064.cc:
 344         Likewise.
 345         * testsuite/20_util/specialized_algorithms/uninitialized_fill_n/102064.cc:
 346         Likewise.
 347         * testsuite/20_util/specialized_algorithms/uninitialized_value_construct/94540.cc:
 348         Likewise.
 349         * testsuite/20_util/specialized_algorithms/uninitialized_value_construct_n/94540.cc:
 350         Likewise.
 351         * testsuite/23_containers/vector/cons/94540.cc: Likewise.
 352         * testsuite/25_algorithms/copy/move_iterators/69478.cc:
 353         Likewise.
 354         * testsuite/25_algorithms/copy_backward/move_iterators/69478.cc:
 355         Likewise.
 356         * testsuite/25_algorithms/move/69478.cc: Likewise.
 357         * testsuite/25_algorithms/move_backward/69478.cc: Likewise.
 358         * testsuite/25_algorithms/rotate/constrained.cc: Likewise.
 359         * testsuite/25_algorithms/rotate_copy/constrained.cc: Likewise.
 360
 361 2024-12-10  Giuseppe D'Angelo  <giuseppe.dangelo@kdab.com>
 362
 363         * include/bits/ranges_uninitialized.h: port some if
 364         constexpr away from is_trivial, and towards more specific
 365         detections instead.
 366
 367 2024-12-10  Giuseppe D'Angelo  <giuseppe.dangelo@kdab.com>
 368
 369         * include/bits/stl_uninitialized.h: Amended the
 370         __is_bitwise_relocatable type trait.
 371
 372 2024-12-10  Giuseppe D'Angelo  <giuseppe.dangelo@kdab.com>
 373
 374         * include/pstl/algorithm_impl.h (__remove_elements): Port away
 375         from is_trivial.
 376         (__pattern_inplace_merge): Likewise.
 377         * include/pstl/glue_memory_impl.h (uninitialized_copy): Likewise.
 378         (uninitialized_copy_n): Likewise.
 379         (uninitialized_move): Likewise.
 380         (uninitialized_move_n): Likewise.
 381         (uninitialized_default_construct): Likewise.
 382         (uninitialized_default_construct_n): Likewise.
 383         (uninitialized_value_construct): Likewise.
 384         (uninitialized_value_construct_n): Likewise.
 385         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc:
 386         Likewise.
 387         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc:
 388         Likewise.
 389         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_fill_destroy.cc:
 390         Likewise.
 391         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc:
 392         Likewise.
 393
 394 2024-12-10  Giuseppe D'Angelo  <giuseppe.dangelo@kdab.com>
 395
 396         * include/bits/basic_string.h: Add a static_assert on the
 397         char-like type.
 398         * include/std/string_view: Port away from is_trivial.
 399
 400 2024-12-09  Jonathan Wakely  <jwakely@redhat.com>
 401
 402         PR libstdc++/102259
 403         * config/io/basic_file_stdio.cc (basic_file::xsgetn): Limit n to
 404         _GLIBCXX_MAX_READ_SIZE if that macro is defined.
 405         * config/os/bsd/darwin/os_defines.h (_GLIBCXX_MAX_READ_SIZE):
 406         Define to INT_MAX-1.
 407         * config/os/bsd/freebsd/os_defines.h (_GLIBCXX_MAX_READ_SIZE):
 408         Likewise.
 409
 410 2024-12-09  Jonathan Wakely  <jwakely@redhat.com>
 411
 412         * include/bits/allocator.h (allocator::is_always_equal): Do not
 413         define for C++26.
 414         (allocator<void>::is_always_equal): Likewise.
 415         * testsuite/20_util/allocator/requirements/typedefs.cc: Check
 416         that is_always_equal is not present in C++26.
 417         * testsuite/20_util/allocator/void.cc: Do not require
 418         is_always_equal for C++26.
 419         * testsuite/23_containers/vector/bool/cons/constexpr.cc: Add
 420         missing override of base's is_always_equal.
 421         * testsuite/23_containers/vector/cons/constexpr.cc: Likewise.
 422
 423 2024-12-09  Jonathan Wakely  <jwakely@redhat.com>
 424
 425         PR libstdc++/117962
 426         * include/debug/safe_container.h: Make allocator-extended move
 427         constructor a no-op during constant evaluation.
 428
 429 2024-12-09  Jonathan Wakely  <jwakely@redhat.com>
 430
 431         PR libstdc++/117921
 432         * testsuite/23_containers/set/modifiers/swap/adl.cc: Add
 433         equality comparison for Allocator.
 434         * testsuite/23_containers/unordered_set/modifiers/swap-2.cc:
 435         Likewise.
 436
 437 2024-12-07  Jonathan Wakely  <jwakely@redhat.com>
 438
 439         * include/std/format: Fix typo in Doxygen comment.
 440
 441 2024-12-07  Matthew Malcomson  <mmalcomson@nvidia.com>
 442
 443         * .editorconfig: Adjust globbing style to standard syntax.
 444
 445 2024-12-05  Jonathan Wakely  <jwakely@redhat.com>
 446
 447         PR libstdc++/117921
 448         * include/bits/hashtable_policy.h (_Hash_code_base::_M_swap):
 449         Use ADL swap for Hash members.
 450         (_Hashtable_base::_M_swap): Use ADL swap for _Equal members.
 451         * include/bits/stl_tree.h (_Rb_tree::swap): Use ADL swap for
 452         _Compare members.
 453         * testsuite/23_containers/set/modifiers/swap/adl.cc: New test.
 454         * testsuite/23_containers/unordered_set/modifiers/swap-2.cc: New
 455         test.
 456
 457 2024-12-03  Jonathan Wakely  <jwakely@redhat.com>
 458
 459         PR libstdc++/108236
 460         * include/pstl/glue_numeric_impl.h (exclusive_scan): Pass __init
 461         as rvalue.
 462         * include/pstl/numeric_impl.h (__brick_transform_scan): Do not
 463         write through __result until after reading through __first. Move
 464         __init into return value.
 465         (__pattern_transform_scan): Pass __init as rvalue.
 466         * include/std/numeric (exclusive_scan): Move construct instead
 467         of copy constructing.
 468         * testsuite/26_numerics/exclusive_scan/2.cc: New test.
 469         * testsuite/26_numerics/pstl/numeric_ops/108236.cc: New test.
 470
 471 2024-12-03  Jonathan Wakely  <jwakely@redhat.com>
 472
 473         * include/bits/alloc_traits.h (__do_alloc_on_copy): Remove.
 474         (__do_alloc_on_move __do_alloc_on_swap): Remove.
 475         (__alloc_on_copy, __alloc_on_move, __alloc_on_swap): Use if
 476         constexpr.
 477
 478 2024-12-03  Jonathan Wakely  <jwakely@redhat.com>
 479
 480         PR libstdc++/57272
 481         * include/bits/forward_list.h (_GLIBCXX_USE_ALLOC_PTR_FOR_LIST):
 482         Define.
 483         (_Fwd_list_node_base::_M_base_ptr): New member functions.
 484         (_Fwd_list_node::_M_node_ptr): New member function.
 485         (_Fwd_list_iterator, _Fwd_list_const_iterator): Make internal
 486         member functions and data member private. Declare forward_list
 487         and _Fwd_list_base as friends.
 488         (__fwdlist::_Node_base, __fwdlist::_Node, __fwdlist::_Iterator):
 489         New class templates.
 490         (__fwdlist::_Node_traits): New class template.
 491         (_Fwd_list_base): Use _Node_traits to get types. Use _Base_ptr
 492         instad of _Fwd_list_node_base*. Use _M_base_ptr() instead of
 493         taking address of head node.
 494         (forward_list): Likewise.
 495         (_Fwd_list_base::_M_get_node): Do not define for versioned
 496         namespace.
 497         (_Fwd_list_base::_M_put_node): Only convert pointer if needed.
 498         (_Fwd_list_base::_M_create_node): Use __allocate_guarded_obj.
 499         (_Fwd_list_base::_M_destroy_node): New member function.
 500         * include/bits/forward_list.tcc (_Fwd_list_base::_M_insert_after)
 501         (forward_list::_M_splice_after, forward_list::insert_after): Use
 502         const_iterator::_M_const_cast() instead of casting pointers.
 503         (_Fwd_list_base::_M_erase_after): Use _M_destroy_node.
 504         (forward_list::remove, forward_list::remove_if): Only do
 505         downcasts when accessing the value.
 506         (forward_list::sort): Likewise.
 507         * testsuite/23_containers/forward_list/capacity/1.cc: Check
 508         max_size for new node type.
 509         * testsuite/23_containers/forward_list/capacity/node_sizes.cc:
 510         New test.
 511         * testsuite/23_containers/forward_list/requirements/explicit_instantiation/alloc_ptr.cc:
 512         New test.
 513         * testsuite/23_containers/forward_list/requirements/explicit_instantiation/alloc_ptr_ignored.cc:
 514         New test.
 515         * testsuite/23_containers/forward_list/requirements/completeness.cc: New file.
 516
 517 2024-12-03  Jonathan Wakely  <jwakely@redhat.com>
 518
 519         PR libstdc++/57272
 520         PR libstdc++/110952
 521         * include/bits/allocated_ptr.h (__allocated_ptr::get): Add
 522         const.
 523         (__allocated_ptr::operator bool, __allocated_ptr::release): New
 524         member functions.
 525         (__allocate_guarded): Add inline.
 526         (__allocated_obj): New class template.
 527         (__allocate_guarded_obj): New function template.
 528         * include/bits/list.tcc (_List_base::_M_clear()): Replace uses
 529         of raw pointers. Use _M_destroy_node.
 530         (list::emplace, list::insert): Likewise.
 531         (list::sort): Adjust check for 0 or 1 wsize. Use template
 532         argument list for _Scratch_list.
 533         * include/bits/stl_list.h (_GLIBCXX_USE_ALLOC_PTR_FOR_LIST):
 534         Define.
 535         (_List_node_base::_Base_ptr): New typedef.
 536         (_List_node_base::_M_base): New member functions.
 537         (_List_node_header::_M_base): Make public and add
 538         using-declaration for base class overload.
 539         (__list::_Node_traits, __list::_Node_base)
 540         (__list::_Node_header, __list::_Node, __list::_Iterator): New
 541         class templates.
 542         (_Scratch_list): Turn class into class template. Use _Base_ptr
 543         typedef instead of _List_node_base*.
 544         (_List_node::_Node_ptr): New typedef.
 545         (_List_node::_M_node_ptr): New member function.
 546         (_List_base, _List_impl): Use _Node_traits to get node types.
 547         (_List_base::_M_put_node): Convert to fancy pointer if needed.
 548         (_List_base::_M_destroy_node): New member function.
 549         (_List_base(_List_base&&, _Node_alloc_type&&)): Use if constexpr
 550         to make function a no-op for fancy pointers.
 551         (_List_base::_S_distance, _List_base::_M_distance)
 552         (_List_base::_M_node_count): Likewise.
 553         (list): Use _Node_traits to get iterator, node and pointer
 554         types.
 555         (list::_M_create_node): Use _Node_ptr typedef instead of _Node*.
 556         Use __allocate_guarded_obj instead of _M_get_node.
 557         (list::end, list::cend, list::empty): Use node header's
 558         _M_base() function instead of taking its address.
 559         (list::swap): Use _Node_traits to get node base type.
 560         (list::_M_create_node, list::_M_insert): Use _Node_ptr instead
 561         of _Node*.
 562         (list::_M_erase): Likewise. Use _M_destroy_node.
 563         (__distance): Overload for __list::_Iterator.
 564         (_Node_base::swap, _Node_base::_M_transfer): Define non-inline
 565         member functions of class templates.
 566         (_Node_header::_M_reverse): Likewise.
 567         * testsuite/23_containers/list/capacity/29134.cc: Check max_size
 568         for allocator of new node type.
 569         * testsuite/23_containers/list/capacity/node_sizes.cc: New test.
 570         * testsuite/23_containers/list/requirements/explicit_instantiation/alloc_ptr.cc:
 571         New test.
 572         * testsuite/23_containers/list/requirements/explicit_instantiation/alloc_ptr_ignored.cc:
 573         New test.
 574         * testsuite/23_containers/list/requirements/completeness.cc: New file.
 575
 576 2024-12-03  Jonathan Wakely  <jwakely@redhat.com>
 577
 578         * include/bits/stl_list.h (_List_iterator): Remove _Self typedef
 579         and just use injected-class-name instead.
 580         (_List_const_iterator): Likewise.
 581
 582 2024-12-03  Jonathan Wakely  <jwakely@redhat.com>
 583
 584         * include/bits/stl_list.h (_List_size): New struct.
 585         (_List_node_header): Replace _M_size member with _List_size base
 586         class.
 587         (_List_node_header(_List_node_header&&)): Replace explicit uses
 588         of _M_size with initializing the base.
 589         (_List_node_header::_M_init): Likewise.
 590         (_List_base::_S_distance, _List_base::_M_distance)
 591         (_List_base::_M_node_count): Move to end of class body and add
 592         comment.
 593         (list::_S_distance, list::_M_node_count): Likewise.
 594         (list::size): Inline _M_node_count effects to here.
 595         (list::splice(iterator, list&, iterator, iterator)): Use #if and
 596         call std::distance instead of _S_distance.
 597
 598 2024-12-03  Jonathan Wakely  <jwakely@redhat.com>
 599
 600         * include/bits/stl_bvector.h (vector(const allocator_type&)):
 601         Add noexcept, as per LWG 3778.
 602         * testsuite/23_containers/vector/bool/cons/lwg3778.cc: New test.
 603
 604 2024-12-03  Jonathan Wakely  <jwakely@redhat.com>
 605
 606         PR libstdc++/117889
 607         PR libstdc++/117858
 608         * include/std/optional (optional(const optional<U>&)): Fix copy
 609         and paste error in constraints.
 610         (optional(optional<U>&&)): Likewise.
 611         * testsuite/20_util/optional/assignment/117858.cc: Move to ...
 612         * testsuite/20_util/optional/cons/117858.cc: New test.
 613
 614 2024-12-02  Jonathan Wakely  <jwakely@redhat.com>
 615
 616         * include/bits/stl_construct.h (_Destroy(FwdIter, FwdIter)): Use
 617         'if constexpr' instead of dispatching to a member function of a
 618         class template.
 619         (_Destroy_n(FwdIter, Size)): Likewise.
 620         (_Destroy_aux, _Destroy_n_aux): Only define for C++98.
 621
 622 2024-12-02  Jonathan Wakely  <jwakely@redhat.com>
 623
 624         * src/c++23/std.cc.in: Disable deprecated warnings when
 625         exporting std::rel_ops members.
 626
 627 2024-11-30  Jonathan Wakely  <jwakely@redhat.com>
 628
 629         PR libstdc++/117858
 630         * testsuite/20_util/optional/assignment/117858.cc: Also test
 631         assignment from rvalue optional.
 632
 633 2024-11-30  Jonathan Wakely  <jwakely@redhat.com>
 634
 635         PR libstdc++/117858
 636         * include/std/optional (operator=(const optional<U>&)): Fix copy
 637         and paste error in constraints.
 638         (operator=(optional<U>&&)): Likewise.
 639         * testsuite/20_util/optional/assignment/117858.cc: New test.
 640
 641 2024-11-30  Jonathan Wakely  <jwakely@redhat.com>
 642
 643         * include/Makefile.am: Add bits/monostate.h.
 644         * include/Makefile.in: Regenerate.
 645         * include/std/utility: Include <bits/monostate.h>.
 646         * include/std/variant (monostate, hash<monostate>): Move
 647         definitions to ...
 648         * include/bits/monostate.h: New file.
 649         * testsuite/20_util/headers/utility/synopsis.cc: Add monostate
 650         and hash<monostate> declarations.
 651         * testsuite/20_util/monostate/requirements.cc: New test.
 652
 653 2024-11-30  Jonathan Wakely  <jwakely@redhat.com>
 654
 655         * testsuite/20_util/headers/utility/synopsis.cc: Add
 656         declarations from C++11 and later.
 657
 658 2024-11-30  Jakub Jelinek  <jakub@redhat.com>
 659
 660         * include/std/functional (_Bind_check_arity): Add , before ... .
 661         * include/bits/refwrap.h (_Mem_fn_traits, _Weak_result_type_impl):
 662         Likewise.
 663         * include/tr1/type_traits (is_function): Likewise.
 664
 665 2024-11-28  Jonathan Wakely  <jwakely@redhat.com>
 666
 667         * include/std/stacktrace (basic_stacktrace::_M_impl::_M_resize):
 668         Use std::_Destroy to destroy removed elements.
 669
 670 2024-11-28  Jonathan Wakely  <jwakely@redhat.com>
 671
 672         * python/libstdcxx/v6/printers.py: Reorder registrations.
 673
 674 2024-11-28  Jonathan Wakely  <jwakely@redhat.com>
 675
 676         PR libstdc++/117822
 677         * include/std/stacktrace (stacktrace(stacktrace&&, const A&)):
 678         Fix typo in qualified-id for is_always_equal trait.
 679         * testsuite/19_diagnostics/stacktrace/stacktrace.cc: Test
 680         allocator-extended constructors and allocator propagation.
 681
 682 2024-11-28  Jonathan Wakely  <jwakely@redhat.com>
 683
 684         * include/bits/stl_relops.h (rel_ops): Add deprecated attribute.
 685         * testsuite/20_util/headers/utility/using_namespace_std_rel_ops.cc:
 686         Add dg-warning for -Wdeprecated warnings.
 687         * testsuite/20_util/rel_ops.cc: Likewise.
 688         * testsuite/util/testsuite_containers.h: Disable -Wdeprecated
 689         warnings when using rel_ops.
 690
 691 2024-11-28  Jonathan Wakely  <jwakely@redhat.com>
 692
 693         * include/bits/stl_list.h: Reduce duplication in doxygen
 694         comments.
 695
 696 2024-11-28  Marek Polacek  <polacek@redhat.com>
 697
 698         PR c++/113798
 699         * testsuite/20_util/tuple/element_access/get_neg.cc: Adjust
 700         dg-prune-output.
 701
 702 2024-11-28  Jonathan Wakely  <jwakely@redhat.com>
 703
 704         PR libstdc++/117210
 705         * config/os/bsd/dragonfly/os_defines.h: Include <sys/cdefs.h>.
 706         * config/os/bsd/freebsd/os_defines.h: Likewise.
 707
 708 2024-11-27  Jan Hubicka  <hubicka@ucw.cz>
 709
 710         * include/bits/basic_string.h (basic_string::size(),
 711         basic_string::length(), basic_string::capacity()): Add
 712         __builtin_unreachable to declare value ranges.
 713         (basic_string::empty()): Implement directly
 714         (basic_string::max_size()): Account correctly the terminating 0
 715         and limits implied by ptrdiff_t.
 716
 717 2024-11-27  Jonathan Wakely  <jwakely@redhat.com>
 718
 719         * include/bits/c++config (__glibcxx_assert): Remove useless
 720         __builtin_expect from constexpr-only assertion. Improve
 721         comments.
 722
 723 2024-11-27  Jonathan Wakely  <jwakely@redhat.com>
 724
 725         PR libstdc++/117650
 726         * include/bits/c++config (__glibcxx_assert_fail): Add cold
 727         attribute.
 728         * include/debug/formatter.h (_Error_formatter::_M_error):
 729         Likewise.
 730
 731 2024-11-27  Patrick Palka  <ppalka@redhat.com>
 732
 733         * include/std/ranges (views::__adaptor::_RangeAdaptorClosure):
 734         Befriend both operator| overloads.
 735         * src/c++23/std.cc.in: Don't export views::__adaptor::operator|.
 736
 737 2024-11-27  Jason Merrill  <jason@redhat.com>
 738
 739         * src/c++23/std.cc.in: Fix iter_move/swap.  Add fold_left_first, to,
 740         concat, and some operators.
 741
 742 2024-11-27  Jonathan Wakely  <jwakely@redhat.com>
 743
 744         * include/bits/forward_list.h (forward_list::front): Add
 745         non-empty assertions.
 746         * include/bits/stl_list.h (list::front, list::back): Add
 747         non-empty assertions.
 748
 749 2024-11-27  Jonathan Wakely  <jwakely@redhat.com>
 750
 751         * include/bits/forward_list.h (operator=(forward_list&&)): Use
 752         if constexpr instead of dispatching to _M_move_assign.
 753         (assign(InputIterator, InputIterator)): Use if constexpr instead
 754         of dispatching to _M_assign.
 755         (assign(size_type, const T&)): Use if constexpr instead of
 756         dispatching to _M_assign_n.
 757         (_M_move_assign, _M_assign_n): Do not define for versioned
 758         namespace.
 759         (_M_assign): Remove.
 760
 761 2024-11-27  Jonathan Wakely  <jwakely@redhat.com>
 762
 763         * include/bits/stl_list.h (operator=(list&&)): Use if constexpr
 764         instead of dispatching to _M_move_assign.
 765         (_M_move_assign): Do not define for versioned namespace.
 766
 767 2024-11-27  Jonathan Wakely  <jwakely@redhat.com>
 768
 769         PR libstdc++/105857
 770         * config/locale/dragonfly/codecvt_members.cc (do_length): Limit
 771         size of alloca buffer to 4k.
 772         * config/locale/gnu/codecvt_members.cc (do_length): Likewise.
 773         * testsuite/22_locale/codecvt/length/wchar_t/105857.cc: New
 774         test.
 775
 776 2024-11-26  Jonathan Wakely  <jwakely@redhat.com>
 777
 778         PR libstdc++/117751
 779         * testsuite/18_support/50594.cc: Edit dg-options to include the
 780         -fno-assume-sane-operators-new-delete option.
 781
 782 2024-11-26  Jan Hubicka  <hubicka@ucw.cz>
 783
 784         * include/bits/deque.tcc (std::deque::_M_reallocate_map): Add
 785         __builtin_unreachable check to declare that maps are not very large.
 786         * include/bits/stl_deque.h (std::deque::size): Add __builtin_unreachable
 787         to check for maximal size of map.
 788
 789 2024-11-26  Jonathan Wakely  <jwakely@redhat.com>
 790
 791         * include/bits/range_access.h (begin, end, ssize): Add
 792         conditional noexcept.
 793         * testsuite/18_support/initializer_list/range_access.cc: Check
 794         results and noexcept-specifier for std::begin and std::end.
 795         * testsuite/24_iterators/headers/iterator/range_access_c++11.cc:
 796         Check for conditional noexcept on std::begin and std::end.
 797         * testsuite/24_iterators/headers/iterator/range_access_c++14.cc:
 798         Likewise.
 799         * testsuite/24_iterators/headers/iterator/range_access_c++17.cc:
 800         Likewise.
 801         * testsuite/24_iterators/range_access/range_access.cc: Check
 802         conditional noexcept is correct.
 803         * testsuite/24_iterators/range_access/range_access_cpp17.cc:
 804         Check std::size, std::empty and std::data.
 805         * testsuite/24_iterators/range_access/range_access_cpp20.cc:
 806         Check conditional noexcept on std::ssize.
 807
 808 2024-11-26  Jonathan Wakely  <jwakely@redhat.com>
 809
 810         * include/bits/forward_list.h: Use Markdown in Doxygen comments.
 811
 812 2024-11-26  Jonathan Wakely  <jwakely@redhat.com>
 813
 814         PR libstdc++/117630
 815         * src/c++11/Makefile.am: Add new file.
 816         * src/c++11/Makefile.in: Regnerate.
 817         * src/c++11/cow-stdexcept.cc (error_category::_M_message): Move
 818         member function definition to ...
 819         * src/c++11/cow-system_error.cc: New file.
 820
 821 2024-11-20  Jonathan Wakely  <jwakely@redhat.com>
 822
 823         * include/bits/stl_set.h (set::find): Use const_iterator in
 824         return type, not iterator.
 825
 826 2024-11-20  Jonathan Wakely  <jwakely@redhat.com>
 827
 828         PR libstdc++/117686
 829         * include/bits/hashtable.h (_Hashtable::_M_emplace_uniq):
 830         Adjust usage of __is_key_type to avoid false positive.
 831         * testsuite/23_containers/unordered_set/insert/117686.cc:
 832         New test.
 833
 834 2024-11-19  Jason Merrill  <jason@redhat.com>
 835
 836         * src/c++23/libstdc++.modules.json.in: Remove C++ comment.
 837
 838 2024-11-18  David Malcolm  <dmalcolm@redhat.com>
 839
 840         * testsuite/lib/libstdc++.exp: Add
 841         "load_gcc_lib dg-test-cleanup.exp".
 842
 843 2024-11-18  Jonathan Wakely  <jwakely@redhat.com>
 844
 845         * include/bits/hashtable.h (_Hashtable::_M_src_hash_code):
 846         Improve comments.
 847         (_Hashtable::_M_merge_unique(_Hashtable&)): Use pointer_traits
 848         to get before-begin pointer. Only use static_cast on valid
 849         nodes, not the before-begin pointer. Reuse a hash code cached in
 850         the node when possible.
 851         (_Hashtable::_M_merge_multi(_Hashtable&)): Likewise.
 852
 853 2024-11-18  Gerald Pfeifer  <gerald@pfeifer.com>
 854
 855         * doc/xml/manual/allocator.xml: Update reference to Angelika
 856         Langer's article.
 857         * doc/html/manual/memory.html: Regenerate.
 858
 859 2024-11-17  Jason Merrill  <jason@redhat.com>
 860
 861         PR libstdc++/106852
 862         * include/bits/version.def: Add __cpp_lib_modules.
 863         * include/bits/version.h: Regenerate.
 864         * src/c++23/Makefile.am: Add modules std and std.compat.
 865         * src/c++23/Makefile.in: Regenerate.
 866         * src/c++23/std-clib.cc.in: New file.
 867         * src/c++23/std.cc.in: New file.
 868         * src/c++23/std.compat.cc.in: New file.
 869         * src/c++23/libstdc++.modules.json.in: New file.
 870
 871 2024-11-17  Gerald Pfeifer  <gerald@pfeifer.com>
 872
 873         * doc/xml/manual/intro.xml: Move a gcc.gnu.org link to https.
 874         * doc/html/manual/license.html: Regenerate.
 875
 876 2024-11-17  Gerald Pfeifer  <gerald@pfeifer.com>
 877
 878         * doc/xml/manual/io.xml: Update link to Angelika Langer's book.
 879         * doc/html/manual/streambufs.html: Regenerate.
 880
 881 2024-11-17  Jan Hubicka  <hubicka@ucw.cz>
 882
 883         PR tree-optimization/109442
 884         * include/bits/stl_vector.h: (vector::size(),
 885         vector::capacity()): Add __builtin_unreachable call to announce
 886         that size and capacity are non-negative.
 887
 888 2024-11-16  Jonathan Wakely  <jwakely@redhat.com>
 889
 890         * Makefile.am: Use $(MAKE) -C dir instead of cd dir && $(MAKE).
 891         * Makefile.in: Regenerate.
 892
 893 2024-11-15  Jonathan Wakely  <jwakely@redhat.com>
 894
 895         * include/bits/stl_list.h (list::emplace_back): Fix indentation.
 896
 897 2024-11-14  Jonathan Wakely  <jwakely@redhat.com>
 898
 899         * include/bits/ranges_algo.h (__is_permutation_fn::operator()):
 900         Short-circuit for sized ranges with different sizes, as per LWG
 901         3560.
 902         * include/bits/ranges_algobase.h (__equal_fn::operator()):
 903         Likewise.
 904         * include/bits/stl_algo.h (__is_permutation): Use if-constexpr
 905         for random access iterator branches.
 906         * include/bits/stl_algobase.h (__equal4): Likewise.
 907         * testsuite/25_algorithms/equal/lwg3560.cc: New test.
 908         * testsuite/25_algorithms/is_permutation/lwg3560.cc: New test.
 909
 910 2024-11-14  Patrick Palka  <ppalka@redhat.com>
 911
 912         * include/std/ranges (keys_view): Adjust as per LWG 3563.
 913         (values_view): Likewise.
 914         * testsuite/std/ranges/adaptors/elements.cc (test08): New test.
 915
 916 2024-11-14  Jonathan Wakely  <jwakely@redhat.com>
 917
 918         * include/bits/ranges_util.h (subrange::begin): Fix constraint,
 919         as per LWG 3589.
 920         * testsuite/std/ranges/subrange/lwg3589.cc: New test.
 921
 922 2024-11-14  Jonathan Wakely  <jwakely@redhat.com>
 923
 924         * include/bits/c++config (_GLIBCXX_NODISCARD): Expand for C++11
 925         and C++14.
 926         * testsuite/22_locale/locale/cons/12438.cc: Adjust dg-warning to
 927         expect nodiscard warnings for C++11 and C++14 as well.
 928         * testsuite/22_locale/locale/operations/2.cc: Likewise.
 929         * testsuite/25_algorithms/equal/debug/1_neg.cc: Likewise.
 930         * testsuite/25_algorithms/equal/debug/2_neg.cc: Likewise.
 931         * testsuite/25_algorithms/equal/debug/3_neg.cc: Likewise.
 932         * testsuite/25_algorithms/find_first_of/concept_check_1.cc:
 933         Likewise.
 934         * testsuite/25_algorithms/is_permutation/2.cc: Likewise.
 935         * testsuite/25_algorithms/lexicographical_compare/71545.cc:
 936         Likewise.
 937         * testsuite/25_algorithms/lower_bound/33613.cc: Likewise.
 938         * testsuite/25_algorithms/lower_bound/debug/irreflexive.cc:
 939         Likewise.
 940         * testsuite/25_algorithms/lower_bound/debug/partitioned_neg.cc:
 941         Likewise.
 942         * testsuite/25_algorithms/lower_bound/debug/partitioned_pred_neg.cc: Likewise.
 943         * testsuite/25_algorithms/minmax/3.cc: Likewise.
 944         * testsuite/25_algorithms/search/78346.cc: Likewise.
 945         * testsuite/25_algorithms/search_n/58358.cc: Likewise.
 946         * testsuite/25_algorithms/unique/1.cc: Likewise.
 947         * testsuite/25_algorithms/unique/11480.cc: Likewise.
 948         * testsuite/25_algorithms/upper_bound/33613.cc: Likewise.
 949         * testsuite/25_algorithms/upper_bound/debug/partitioned_neg.cc:
 950         Likewise.
 951         * testsuite/25_algorithms/upper_bound/debug/partitioned_pred_neg.cc: Likewise.
 952         * testsuite/27_io/ios_base/types/fmtflags/bitmask_operators.cc:
 953         Likewise.
 954         * testsuite/27_io/ios_base/types/iostate/bitmask_operators.cc:
 955         Likewise.
 956         * testsuite/27_io/ios_base/types/openmode/bitmask_operators.cc:
 957         Likewise.
 958         * testsuite/ext/concept_checks.cc: Likewise.
 959         * testsuite/ext/is_heap/47709.cc: Likewise.
 960         * testsuite/ext/is_sorted/cxx0x.cc: Likewise.
 961
 962 2024-11-14  Jason Merrill  <jason@redhat.com>
 963
 964         * include/precompiled/stdc++.h: <coroutine> is C++20.
 965
 966 2024-11-14  Jonathan Wakely  <jwakely@redhat.com>
 967
 968         * include/bits/stl_iterator.h (operator+): Add constraint to
 969         move_iterator operator.
 970         * testsuite/24_iterators/move_iterator/rel_ops_c++20.cc:
 971
 972 2024-11-14  Jonathan Wakely  <jwakely@redhat.com>
 973
 974         * include/bits/stl_iterator.h (__normal_iterator): Replace
 975         enable_if constraint with requires-clause.
 976
 977 2024-11-14  Jonathan Wakely  <jwakely@redhat.com>
 978
 979         * include/bits/stl_iterator.h: Make use of feature test macros
 980         more consistent. Improve doxygen comments.
 981
 982 2024-11-14  Jonathan Wakely  <jwakely@redhat.com>
 983
 984         PR libstdc++/117560
 985         * include/bits/fs_dir.h (enable_borrowed_range, enable_view):
 986         Define specializations for directory iterators, as per LWG 3480.
 987         * testsuite/27_io/filesystem/iterators/lwg3480.cc: New test.
 988
 989 2024-11-13  Jonathan Wakely  <jwakely@redhat.com>
 990
 991         * doc/xml/manual/evolution.xml: Document removal of nested types
 992         from std::hash specializations.
 993         * doc/html/manual/api.html: Regenerate.
 994         * include/bits/functional_hash.h (__hash_base): Remove
 995         deprecated nested types for C++20.
 996         (__hash_empty_base): Define new class template.
 997         (__is_hash_enabled_for): Define new variable template.
 998         (__poison_hash): Remove.
 999         (__hash_not_enabled): Define new class template.
1000         (__hash_enum): Remove partial specialization for non-enums.
1001         (hash): Derive from __hash_not_enabled for non-enums, instead of
1002         __hash_enum.
1003         * include/bits/unique_ptr.h (__uniq_ptr_hash): Derive from
1004         __hash_base. Conditionally derive from __hash_empty_base.
1005         (__uniq_ptr_hash<>): Remove disabled specialization.
1006         (hash): Do not derive from __hash_base unconditionally.
1007         Conditionally derive from either __uniq_ptr_hash or
1008         __hash_not_enabled.
1009         * include/std/optional (__optional_hash_call_base): Remove.
1010         (__optional_hash): Define new class template.
1011         (hash): Derive from either
1012         (hash): Conditionally derive from either __optional_hash or
1013         __hash_not_enabled. Remove nested typedefs.
1014         * include/std/variant (_Base_dedup): Replace __poison_hash with
1015         __hash_empty_base.
1016         (__variant_hash_call_base_impl): Remove.
1017         (__variant_hash): Define new class template.
1018         (hash): Conditionally derive from either __variant_hash or
1019         __hash_not_enabled. Remove nested typedefs.
1020         * testsuite/20_util/optional/hash.cc: Check whether nested types
1021         are present.
1022         * testsuite/20_util/variant/hash.cc: Likewise.
1023         * testsuite/20_util/optional/hash_abi.cc: New test.
1024         * testsuite/20_util/unique_ptr/hash/abi.cc: New test.
1025         * testsuite/20_util/unique_ptr/hash/types.cc: New test.
1026         * testsuite/20_util/variant/hash_abi.cc: New test.
1027
1028 2024-11-13  Jonathan Wakely  <jwakely@redhat.com>
1029
1030         * include/bits/hashtable.h (__location_type): New struct.
1031         (_M_locate): New member function.
1032         (_M_find_before_node(const key_type&)): Remove.
1033         (_M_find_node): Move variable initialization into condition.
1034         (_M_find_node_tr): Likewise.
1035         (operator=(initializer_list<T>), try_emplace, _M_reinsert_node)
1036         (_M_merge_unique, find, erase(const key_type&)): Use _M_locate
1037         for lookup.
1038
1039 2024-11-13  Jonathan Wakely  <jwakely@redhat.com>
1040
1041         * include/bits/hashtable.h (_M_merge_unique): Add overload for
1042         merging from same type.
1043         (_M_merge_unique<Compatible>): Simplify size tracking. Add
1044         comment.
1045         (_M_merge_multi): Add overload for merging from same type.
1046         (_M_merge_multi<Compatible>): Add comment.
1047         * include/bits/unordered_map.h (unordered_map::merge): Check for
1048         self-merge in the lvalue overload. Call _M_merge_unique directly
1049         for the rvalue overload.
1050         (unordered_multimap::merge): Likewise.
1051         * include/bits/unordered_set.h (unordered_set::merge): Likewise.
1052         (unordered_multiset::merge): Likewise.
1053         * testsuite/23_containers/unordered_map/modifiers/merge.cc:
1054         Add more tests.
1055         * testsuite/23_containers/unordered_multimap/modifiers/merge.cc:
1056         Likewise.
1057         * testsuite/23_containers/unordered_multiset/modifiers/merge.cc:
1058         Likewise.
1059         * testsuite/23_containers/unordered_set/modifiers/merge.cc:
1060         Likewise.
1061
1062 2024-11-13  Jonathan Wakely  <jwakely@redhat.com>
1063
1064         * include/bits/hashtable_policy.h (_Hashtable_base::_S_equals):
1065         Remove.
1066         (_Hashtable_base::_S_node_equals): Remove.
1067         (_Hashtable_base::_M_key_equals_tr): Fix inaccurate
1068         static_assert string.
1069         (_Hashtable_base::_M_equals, _Hashtable_base::_M_equals_tr): Use
1070         'if constexpr' instead of _S_equals.
1071         (_Hashtable_base::_M_node_equals): Use 'if constexpr' instead of
1072         _S_node_equals.
1073
1074 2024-11-13  Jonathan Wakely  <jwakely@redhat.com>
1075
1076         * include/bits/hashtable.h (_Hashtable): Remove _Equality base
1077         class.
1078         (_Hashtable::_M_equal): Define equality comparison here instead
1079         of in _Equality::_M_equal.
1080         * include/bits/hashtable_policy.h (_Equality): Remove.
1081
1082 2024-11-13  Jonathan Wakely  <jwakely@redhat.com>
1083
1084         * include/bits/hashtable.h (_Hashtable): Remove inheritance from
1085         __detail::_Insert and move its members into _Hashtable.
1086         * include/bits/hashtable_policy.h (__detail::_Insert): Remove.
1087
1088 2024-11-13  Jonathan Wakely  <jwakely@redhat.com>
1089
1090         * include/bits/hashtable.h (operator=(const _Hashtable&)): Use
1091         RAII instead of try-catch.
1092         (_M_assign(_Ht&&, _NodeGenerator&)): Likewise.
1093
1094 2024-11-13  Jonathan Wakely  <jwakely@redhat.com>
1095
1096         * include/bits/hashtable.h (_Hashtable::__fwd_value_for):
1097         Remove.
1098         (_Hashtable::_M_assign): Use static_cast instead of
1099         __fwd_value_for.
1100
1101 2024-11-13  Jonathan Wakely  <jwakely@redhat.com>
1102
1103         * include/bits/hashtable.h (_Hashtable): Remove typedefs for
1104         node generators.
1105         (_Hashtable::_M_assign(_Ht&&)): Add new overload.
1106         (_Hashtable::operator=(initializer_list<value_type>)): Add local
1107         typedef for node generator.
1108         (_Hashtable::_M_assign_elements): Likewise.
1109         (_Hashtable::operator=(const _Hashtable&)): Use new _M_assign
1110         overload.
1111         (_Hashtable(const _Hashtable&)): Likewise.
1112         (_Hashtable(const _Hashtable&, const allocator_type&)):
1113         Likewise.
1114         (_Hashtable(_Hashtable&&, __node_alloc_type&&, false_type)):
1115         Likewise.
1116         * include/bits/hashtable_policy.h (_Insert): Remove typedef for
1117         node generator.
1118
1119 2024-11-13  Jonathan Wakely  <jwakely@redhat.com>
1120
1121         * include/bits/hashtable.h (_Hashtable::_M_erase): Remove
1122         overloads for erasing by key, moving logic to ...
1123         (_Hashtable::erase): ... here.
1124
1125 2024-11-13  Jonathan Wakely  <jwakely@redhat.com>
1126
1127         PR libstdc++/115285
1128         * include/bits/hashtable.h (_Hashtable::_M_emplace): Replace
1129         with _M_emplace_uniq and _M_emplace_multi.
1130         (_Hashtable::_S_forward_key, _Hashtable::_M_insert_unique)
1131         (_Hashtable::_M_insert_unique_aux, _Hashtable::_M_insert):
1132         Remove.
1133         * include/bits/hashtable_policy.h (_ConvertToValueType):
1134         Remove.
1135         (_Insert_base::_M_insert_range): Remove overload for unique keys
1136         and rename overload for non-unique keys to ...
1137         (_Insert_base::_M_insert_range_multi): ... this.
1138         (_Insert_base::insert): Call _M_emplace_uniq or _M_emplace_multi
1139         instead of _M_insert.  Add insert overloads from _Insert.
1140         (_Insert_base): Rename to _Insert.
1141         (_Insert): Remove
1142         * testsuite/23_containers/unordered_map/96088.cc: Adjust
1143         expected number of allocations.
1144         * testsuite/23_containers/unordered_set/96088.cc: Likewise.
1145
1146 2024-11-13  Jonathan Wakely  <jwakely@redhat.com>
1147
1148         * include/bits/hashtable_policy.h (_ReuseOrAllocNode::operator()):
1149         Replace parameter pack with a single parameter. Assign to
1150         existing value when possible.
1151         * testsuite/23_containers/unordered_multiset/allocator/move_assign.cc:
1152         Adjust expected count of operations.
1153         * testsuite/23_containers/unordered_set/allocator/move_assign.cc:
1154         Likewise.
1155
1156 2024-11-13  Jonathan Wakely  <jwakely@redhat.com>
1157
1158         * include/bits/hashtable.h (operator=(initializer_list)):
1159         Refactor to not use _M_insert_range.
1160
1161 2024-11-13  Jonathan Wakely  <jwakely@redhat.com>
1162
1163         * testsuite/util/testsuite_performance.h (time_counter): Add
1164         comment about times.
1165         (time_counter::system_time): Use correct split value.
1166
1167 2024-11-13  Jonathan Wakely  <jwakely@redhat.com>
1168
1169         * scripts/check_performance: Add timestamp to output file at
1170         start of run.
1171
1172 2024-11-13  Jonathan Wakely  <jwakely@redhat.com>
1173
1174         * testsuite/util/testsuite_performance.h: Use
1175         __gnu_cxx::__is_single_threaded instead of __gthread_active_p().
1176
1177 2024-11-13  Jonathan Wakely  <jwakely@redhat.com>
1178
1179         * testsuite/performance/ext/pb_ds/hash_int_erase_mem.cc: Replace
1180         std::unary_function with result_type and argument_type typedefs.
1181         * testsuite/util/performance/assoc/multimap_common_type.hpp:
1182         Likewise.
1183
1184 2024-11-13  Jonathan Wakely  <jwakely@redhat.com>
1185
1186         * testsuite/performance/20_util/memory_resource/pools.cc: Fix
1187         -Wunused-value warnings about unnamed std::lock_guard objects.
1188
1189 2024-11-11  Jonathan Wakely  <jwakely@redhat.com>
1190
1191         * include/bits/locale_conv.h (wstring_convert, wbuffer_convert):
1192         Adjust strings passed to exception constructors.
1193
1194 2024-11-11  Jonathan Wakely  <jwakely@redhat.com>
1195
1196         PR libstdc++/117520
1197         * include/std/text_encoding (aliases_view:_Iterator::operator+=):
1198         Fix typos that caused == to be used instead of =.
1199         (aliases_view::_Iterator): Fix friend declaration.
1200         * testsuite/std/text_encoding/members.cc: Adjust expected
1201         behaviour of invalid subscript. Add tests for other erroneous
1202         operations on iterators.
1203
1204 2024-11-11  Jonathan Wakely  <jwakely@redhat.com>
1205
1206         * include/bits/unicode.h (_Utf_iterator::_M_read_utf16): Add
1207         parentheses.
1208
1209 2024-11-08  Jakub Jelinek  <jakub@redhat.com>
1210
1211         * libsupc++/new (::operator new, ::operator new[]): Add malloc
1212         attribute where missing.  Add alloc_align attribute when
1213         std::align_val_t is present and where it was missing.  Formatting fix.
1214
1215 2024-11-08  Jonathan Wakely  <jwakely@redhat.com>
1216
1217         * include/bits/hashtable.h (_Hashtable): Add 'inline' to some
1218         one-line constructors.
1219
1220 2024-11-08  Jonathan Wakely  <jwakely@redhat.com>
1221
1222         * include/bits/hashtable_policy.h (_Insert_base::try_emplace):
1223         Do not define for C++11 and C++14.
1224         * include/debug/map.h (try_emplace): Use feature test macro.
1225         * include/debug/unordered_map (try_emplace): Likewise.
1226         * testsuite/17_intro/names.cc: Define try_emplace before C++17.
1227
1228 2024-11-08  Jonathan Wakely  <jwakely@redhat.com>
1229
1230         * include/bits/hashtable_policy.h (__distance_fw): Replace tag
1231         dispatching with 'if constexpr'.
1232
1233 2024-11-07  Jonathan Wakely  <jwakely@redhat.com>
1234
1235         * include/bits/hashtable.h (_M_insert_unique_node): Improve
1236         comment.
1237
1238 2024-11-07  Jonathan Wakely  <jwakely@redhat.com>
1239
1240         PR libstdc++/115285
1241         * include/bits/hashtable.h (_Hashtable::_S_forward_key): Remove.
1242         (_Hashtable::_M_insert_unique_aux): Replace _S_forward_key with
1243         a static_cast to a type defined using conditional_t.
1244         (_Hashtable::_M_insert): Replace _ConvertToValueType with a
1245         static_cast to a type defined using conditional_t.
1246         * include/bits/hashtable_policy.h (_ConvertToValueType): Remove.
1247         * testsuite/23_containers/unordered_map/insert/115285.cc: New test.
1248         * testsuite/23_containers/unordered_set/insert/115285.cc: New test.
1249         * testsuite/23_containers/unordered_set/96088.cc: Adjust
1250         expected number of allocations.
1251
1252 2024-11-07  Jonathan Wakely  <jwakely@redhat.com>
1253
1254         * include/bits/stl_pair.h (__is_pair): Define for C++11 and
1255         C++14 as well.
1256
1257 2024-11-07  Jonathan Wakely  <jwakely@redhat.com>
1258
1259         * include/bits/hashtable.h (_Hashtable): Fix comment grammar.
1260
1261 2024-11-07  Jonathan Wakely  <jwakely@redhat.com>
1262
1263         * include/bits/hashtable.h: Add is_permutation to comment.
1264         * include/bits/hashtable_policy.h: Remove it from comment.
1265
1266 2024-11-07  Jonathan Wakely  <jwakely@redhat.com>
1267
1268         * include/bits/hashtable.h: Fix spelling in comment.
1269
1270 2024-11-06  Jonathan Wakely  <jwakely@redhat.com>
1271
1272         * doc/xml/manual/evolution.xml: Document deprecations.
1273         * doc/html/*: Regenerate.
1274         * include/c_compatibility/complex.h (_GLIBCXX_COMPLEX_H): Move
1275         include guard to start of file. Include <complex> directly
1276         instead of <ccomplex>.
1277         * include/c_compatibility/tgmath.h: Include <cmath> and
1278         <complex> directly, instead of <ctgmath>.
1279         * include/c_global/ccomplex: Add deprecated #warning for C++17
1280         and #error for C++20 if _GLIBCXX_USE_DEPRECATED == 0.
1281         * include/c_global/ciso646: Likewise.
1282         * include/c_global/cstdalign: Likewise.
1283         * include/c_global/cstdbool: Likewise.
1284         * include/c_global/ctgmath: Likewise.
1285         * include/c_std/ciso646: Likewise.
1286         * include/precompiled/stdc++.h: Do not include ccomplex,
1287         ciso646, cstdalign, cstdbool, or ctgmath in C++17 and later.
1288         * testsuite/18_support/headers/cstdalign/macros.cc: Check for
1289         warnings and errors for unsupported dialects.
1290         * testsuite/18_support/headers/cstdbool/macros.cc: Likewise.
1291         * testsuite/26_numerics/headers/ctgmath/complex.cc: Likewise.
1292         * testsuite/27_io/objects/char/1.cc: Do not include <ciso646>.
1293         * testsuite/27_io/objects/wchar_t/1.cc: Likewise.
1294         * testsuite/18_support/headers/cstdbool/std_c++0x_neg.cc: Removed.
1295         * testsuite/18_support/headers/cstdalign/std_c++0x_neg.cc: Removed.
1296         * testsuite/26_numerics/headers/ccomplex/std_c++0x_neg.cc: Removed.
1297         * testsuite/26_numerics/headers/ctgmath/std_c++0x_neg.cc: Removed.
1298         * testsuite/18_support/headers/ciso646/macros.cc: New test.
1299         * testsuite/18_support/headers/ciso646/macros.h.cc: New test.
1300         * testsuite/18_support/headers/cstdbool/macros.h.cc: New test.
1301         * testsuite/26_numerics/headers/ccomplex/complex.cc: New test.
1302         * testsuite/26_numerics/headers/ccomplex/complex.h.cc: New test.
1303         * testsuite/26_numerics/headers/ctgmath/complex.h.cc: New test.
1304         * testsuite/18_support/headers/cstdalign/macros.h.cc: New file.
1305
1306 2024-11-06  Jonathan Wakely  <jwakely@redhat.com>
1307
1308         * include/c_compatibility/complex.h (_GLIBCXX_COMPLEX_H): Move
1309         include guard to start of the header.
1310         * include/c_global/ctgmath (_GLIBCXX_CTGMATH): Likewise.
1311
1312 2024-11-06  Jonathan Wakely  <jwakely@redhat.com>
1313
1314         * include/bits/shared_ptr_base.h (__shared_ptr_deref): New
1315         function template.
1316         (__shared_ptr_access, __shared_ptr_access<>): Use it.
1317
1318 2024-11-06  Jonathan Wakely  <jwakely@redhat.com>
1319
1320         * src/c++17/fs_dir.cc (fs::directory_iterator::operator*): Use
1321         shared_ptr::operator* instead of shared_ptr::operator->.
1322         (fs::recursive_directory_iterator::options): Likewise.
1323         (fs::recursive_directory_iterator::depth): Likewise.
1324         (fs::recursive_directory_iterator::recursion_pending): Likewise.
1325         (fs::recursive_directory_iterator::operator*): Likewise.
1326         (fs::recursive_directory_iterator::disable_recursion_pending):
1327         Likewise.
1328
1329 2024-11-04  Nathaniel Shead  <nathanieloshead@gmail.com>
1330
1331         PR testsuite/113710
1332         PR c++/113814
1333         * include/bits/stl_pair.h: Remove workaround.
1334
1335 2024-11-04  Jakub Jelinek  <jakub@redhat.com>
1336
1337         PR libstdc++/117406
1338         * testsuite/26_numerics/headers/cmath/117406.cc: Use
1339         std::numeric_limits<int>::max() instead of INT_MAX.
1340
1341 2024-11-02  Jakub Jelinek  <jakub@redhat.com>
1342
1343         PR libstdc++/117406
1344         * include/c_global/cmath (std::ilogb(_Float16), std::llrint(_Float16),
1345         std::llround(_Float16), std::lrint(_Float16), std::lround(_Float16)):
1346         Don't cast __builtin_* return to _Float16.
1347         (std::ilogb(__gnu_cxx::__bfloat16_t),
1348         std::llrint(__gnu_cxx::__bfloat16_t),
1349         std::llround(__gnu_cxx::__bfloat16_t),
1350         std::lrint(__gnu_cxx::__bfloat16_t),
1351         std::lround(__gnu_cxx::__bfloat16_t)): Don't cast __builtin_* return to
1352         __gnu_cxx::__bfloat16_t.
1353         * testsuite/26_numerics/headers/cmath/117406.cc: New test.
1354
1355 2024-11-01  Jonathan Wakely  <jwakely@redhat.com>
1356
1357         * include/bits/unordered_map.h: Check __glibcxx_node_extract and
1358         __glibcxx_unordered_map_try_emplace instead of __cplusplus.
1359         * include/bits/unordered_set.h: Check __glibcxx_node_extract
1360         instead of __cplusplus.
1361
1362 2024-11-01  Jonathan Wakely  <jwakely@redhat.com>
1363
1364         * include/bits/hashtable.h: Improve comments.
1365
1366 2024-11-01  Jonathan Wakely  <jwakely@redhat.com>
1367
1368         PR libstdc++/111055
1369         * include/bits/forward_list.h
1370         (forward_list(from_range, R&&, const Alloc&), assign_range)
1371         (prepend_range, insert_range_after): Define.
1372         * include/bits/stl_list.h (list(from_range, R&&, const Alloc&))
1373         (assign_range, prepend_range, append_range, insert_range):
1374         Define.
1375         * include/debug/forward_list
1376         (forward_list(from_range, R&&, const Alloc&), assign_range)
1377         (prepend_range, insert_range_after): Define.
1378         * include/debug/list (list(from_range, R&&, const Alloc&))
1379         (assign_range, prepend_range, append_range, insert_range):
1380         Define.
1381         * testsuite/23_containers/forward_list/cons/from_range.cc: New
1382         test.
1383         * testsuite/23_containers/forward_list/modifiers/assign_range.cc:
1384         New test.
1385         * testsuite/23_containers/forward_list/modifiers/insert_range_after.cc:
1386         New test.
1387         * testsuite/23_containers/forward_list/modifiers/prepend_range.cc:
1388         New test.
1389         * testsuite/23_containers/list/cons/from_range.cc: New test.
1390         * testsuite/23_containers/list/modifiers/append_range.cc: New
1391         test.
1392         * testsuite/23_containers/list/modifiers/assign/assign_range.cc:
1393         New test.
1394         * testsuite/23_containers/list/modifiers/insert/insert_range.cc:
1395         New test.
1396         * testsuite/23_containers/list/modifiers/prepend_range.cc: New
1397         test.
1398
1399 2024-11-01  Jonathan Wakely  <jwakely@redhat.com>
1400
1401         * testsuite/23_containers/unordered_set/pr115285.cc: Include
1402         missing header for std::vector.
1403
1404 2024-11-01  Jonathan Wakely  <jwakely@redhat.com>
1405
1406         * libsupc++/typeinfo: Remove whitespace in #endif
1407
1408 2024-10-31  Jonathan Wakely  <jwakely@redhat.com>
1409
1410         * libsupc++/new (operator new): Add attribute align_alloc(2) to
1411         overloads taking a std::align_val_t argument.
1412         * testsuite/18_support/new_aligned_warn.cc: New test.
1413
1414 2024-10-30  Jonathan Wakely  <jwakely@redhat.com>
1415
1416         * testsuite/23_containers/vector/cons/from_range.cc: Fix copy &
1417         paste error in comment.
1418         * testsuite/23_containers/vector/modifiers/append_range.cc:
1419         Likewise.
1420         * testsuite/23_containers/vector/modifiers/assign/assign_range.cc:
1421         Likewise.
1422         * testsuite/23_containers/vector/modifiers/insert/insert_range.cc:
1423         Likewise.
1424
1425 2024-10-30  Jonathan Wakely  <jwakely@redhat.com>
1426
1427         * doc/xml/manual/using_exceptions.xml: Fix typos and grammatical
1428         errors.
1429         * doc/html/manual/using_exceptions.html: Regenerate.
1430
1431 2024-10-30  Jonathan Wakely  <jwakely@redhat.com>
1432
1433         * include/bits/c++config (_GLIBCXX_DOUBLE_IS_IEEE_BINARY32):
1434         Define.
1435         (_GLIBCXX_LDOUBLE_IS_IEEE_BINARY64): Define.
1436         (_GLIBCXX_LDOUBLE_IS_IEEE_BINARY32): Define.
1437         * include/bits/cpp_type_traits.h (__memcpyable): Define
1438         specializations when double and long double are compatible.
1439
1440 2024-10-30  Jonathan Wakely  <jwakely@redhat.com>
1441
1442         * include/bits/cpp_type_traits.h (__memcpyable): Add
1443         specializations for compatible floating-point types.
1444
1445 2024-10-29  Patrick Palka  <ppalka@redhat.com>
1446
1447         PR libstdc++/112641
1448         * include/std/ranges (drop_view::begin): Reimplement const
1449         overload so that it's O(1) always.
1450         * testsuite/std/ranges/adaptors/drop.cc (test10): New test.
1451
1452 2024-10-29  Jakub Jelinek  <jakub@redhat.com>
1453
1454         PR libstdc++/117321
1455         * include/c_global/cmath (nextafter(_Float16, _Float16)): Use
1456         if consteval rather than if (std::__is_constant_evaluated()) around
1457         the __builtin_nextafterf16 call.
1458         (nextafter(__gnu_cxx::__bfloat16_t, __gnu_cxx::__bfloat16_t)): Use
1459         if consteval rather than if (std::__is_constant_evaluated()) around
1460         the __builtin_nextafterf16b call.
1461         * testsuite/26_numerics/headers/cmath/117321.cc: New test.
1462
1463 2024-10-28  Jonathan Wakely  <jwakely@redhat.com>
1464
1465         * testsuite/23_containers/vector/bool/cons/from_range.cc: Use
1466         dg-do run instead of compile.
1467         (test_ranges): Use do_test instead of do_test_a for rvalue
1468         range.
1469         (test_constexpr): Call function template instead of just
1470         instantiating it.
1471         * testsuite/23_containers/vector/bool/modifiers/assign/assign_range.cc:
1472         Use dg-do run instead of compile.
1473         (do_test): Use same test logic for vector<bool> as for primary
1474         template.
1475         (test_constexpr): Call function template instead of just
1476         instantiating it.
1477         * testsuite/23_containers/vector/bool/modifiers/insert/append_range.cc:
1478         Use dg-do run instead of compile.
1479         (test_ranges): Use do_test instead of do_test_a for rvalue
1480         range.
1481         (test_constexpr): Call function template instead of just
1482         instantiating it.
1483         * testsuite/23_containers/vector/bool/modifiers/insert/insert_range.cc:
1484         Use dg-do run instead of compile.
1485         (do_test): Fix incorrect function arguments to match intended
1486         results.
1487         (test_ranges): Use do_test instead of do_test_a for rvalue
1488         range.
1489         (test_constexpr): Call function template instead of just
1490         instantiating it.
1491         * testsuite/23_containers/vector/cons/from_range.cc: Use dg-do
1492         run instead of compile.
1493         (test_ranges): Fix ill-formed call to do_test.
1494         (test_constexpr): Call function template instead of just
1495         instantiating it.
1496         * testsuite/23_containers/vector/modifiers/append_range.cc:
1497         Use dg-do run instead of compile.
1498         (test_constexpr): Likewise.
1499         * testsuite/23_containers/vector/modifiers/assign/assign_range.cc:
1500         Use dg-do run instead of compile.
1501         (do_test): Do not reuse input ranges.
1502         (test_constexpr): Call function template instead of just
1503         instantiating it.
1504         * testsuite/23_containers/vector/modifiers/insert/insert_range.cc:
1505         Use dg-do run instead of compile.
1506         (do_test): Fix incorrect function arguments to match intended
1507         results.
1508         (test_constexpr): Call function template instead of just
1509         instantiating it.
1510
1511 2024-10-27  Jonathan Wakely  <jwakely@redhat.com>
1512
1513         PR libstdc++/111055
1514         * include/bits/ranges_base.h (__container_compatible_range): New
1515         concept.
1516         * include/bits/stl_bvector.h (vector(from_range, R&&, const Alloc&))
1517         (assign_range, insert_range, append_range): Define.
1518         * include/bits/stl_uninitialized.h (__do_uninit_copy): Support
1519         non-common ranges.
1520         (__uninitialized_copy_a): Likewise.
1521         * include/bits/stl_vector.h (_Vector_base::_M_append_range_to):
1522         New function.
1523         (_Vector_base::_M_append_range): Likewise.
1524         (vector(from_range, R&&, const Alloc&), assign_range): Define.
1525         (append_range): Define.
1526         (insert_range): Declare.
1527         * include/debug/vector (vector(from_range, R&&, const Alloc&))
1528         (assign_range, insert_range, append_range): Define.
1529         * include/bits/vector.tcc (insert_range): Define.
1530         * testsuite/util/testsuite_iterators.h (input_iterator_wrapper_rval):
1531         New class template.
1532         * testsuite/23_containers/vector/bool/cons/from_range.cc: New test.
1533         * testsuite/23_containers/vector/bool/modifiers/assign/assign_range.cc:
1534         New test.
1535         * testsuite/23_containers/vector/bool/modifiers/insert/append_range.cc:
1536         New test.
1537         * testsuite/23_containers/vector/bool/modifiers/insert/insert_range.cc:
1538         New test.
1539         * testsuite/23_containers/vector/cons/from_range.cc: New test.
1540         * testsuite/23_containers/vector/modifiers/append_range.cc: New test.
1541         * testsuite/23_containers/vector/modifiers/assign/assign_range.cc:
1542         New test.
1543         * testsuite/23_containers/vector/modifiers/insert/insert_range.cc:
1544         New test.
1545
1546 2024-10-27  Jonathan Wakely  <jwakely@redhat.com>
1547
1548         * include/bits/stl_bvector.h (emplace_back, emplace): Forward
1549         parameter pack to preserve value category.
1550         * testsuite/23_containers/vector/bool/emplace_rvalue.cc: New
1551         test.
1552
1553 2024-10-25  Jonathan Wakely  <jwakely@redhat.com>
1554
1555         * testsuite/21_strings/basic_string/operators/char/op_plus_string_view.cc:
1556         Check __cpp_lib_constexpr_string.
1557
1558 2024-10-25  Giuseppe D'Angelo  <giuseppe.dangelo@kdab.com>
1559
1560         * include/bits/basic_string.h: Implement the four operator+
1561         overloads between basic_string and (types convertible to)
1562         basic_string_view.
1563         * include/bits/version.def: Bump the feature-testing macro.
1564         * include/bits/version.h: Regenerate.
1565         * testsuite/21_strings/basic_string/operators/char/op_plus_fspath_neg.cc: New test.
1566         * testsuite/21_strings/basic_string/operators/char/op_plus_string_view.cc: New test.
1567         * testsuite/21_strings/basic_string/operators/char/op_plus_string_view_compat.cc:
1568         New test.
1569
1570 2024-10-25  Jakub Jelinek  <jakub@redhat.com>
1571
1572         * include/debug/debug.h: Remove trailing whitespace.
1573         * include/parallel/base.h: Likewise.
1574         * include/parallel/types.h: Likewise.
1575         * include/parallel/settings.h: Likewise.
1576         * include/parallel/multiseq_selection.h: Likewise.
1577         * include/parallel/partition.h: Likewise.
1578         * include/parallel/random_number.h: Likewise.
1579         * include/parallel/find_selectors.h: Likewise.
1580         * include/parallel/partial_sum.h: Likewise.
1581         * include/parallel/list_partition.h: Likewise.
1582         * include/parallel/search.h: Likewise.
1583         * include/parallel/algorithmfwd.h: Likewise.
1584         * include/parallel/random_shuffle.h: Likewise.
1585         * include/parallel/multiway_mergesort.h: Likewise.
1586         * include/parallel/sort.h: Likewise.
1587         * include/parallel/algobase.h: Likewise.
1588         * include/parallel/numericfwd.h: Likewise.
1589         * include/parallel/multiway_merge.h: Likewise.
1590         * include/parallel/losertree.h: Likewise.
1591         * include/bits/basic_ios.h: Likewise.
1592         * include/bits/stringfwd.h: Likewise.
1593         * include/bits/ostream_insert.h: Likewise.
1594         * include/bits/stl_heap.h: Likewise.
1595         * include/bits/unordered_map.h: Likewise.
1596         * include/bits/hashtable_policy.h: Likewise.
1597         * include/bits/stl_iterator_base_funcs.h: Likewise.
1598         * include/bits/valarray_before.h: Likewise.
1599         * include/bits/regex.h: Likewise.
1600         * include/bits/postypes.h: Likewise.
1601         * include/bits/stl_iterator.h: Likewise.
1602         * include/bits/localefwd.h: Likewise.
1603         * include/bits/stl_algo.h: Likewise.
1604         * include/bits/ios_base.h: Likewise.
1605         * include/bits/stl_function.h: Likewise.
1606         * include/bits/basic_string.h: Likewise.
1607         * include/bits/hashtable.h: Likewise.
1608         * include/bits/valarray_after.h: Likewise.
1609         * include/bits/char_traits.h: Likewise.
1610         * include/bits/gslice.h: Likewise.
1611         * include/bits/locale_facets_nonio.h: Likewise.
1612         * include/bits/mask_array.h: Likewise.
1613         * include/bits/specfun.h: Likewise.
1614         * include/bits/random.h: Likewise.
1615         * include/bits/slice_array.h: Likewise.
1616         * include/bits/valarray_array.h: Likewise.
1617         * include/tr1/float.h: Likewise.
1618         * include/tr1/functional_hash.h: Likewise.
1619         * include/tr1/math.h: Likewise.
1620         * include/tr1/hashtable_policy.h: Likewise.
1621         * include/tr1/stdio.h: Likewise.
1622         * include/tr1/complex.h: Likewise.
1623         * include/tr1/stdbool.h: Likewise.
1624         * include/tr1/stdarg.h: Likewise.
1625         * include/tr1/inttypes.h: Likewise.
1626         * include/tr1/fenv.h: Likewise.
1627         * include/tr1/stdlib.h: Likewise.
1628         * include/tr1/wchar.h: Likewise.
1629         * include/tr1/tgmath.h: Likewise.
1630         * include/tr1/limits.h: Likewise.
1631         * include/tr1/wctype.h: Likewise.
1632         * include/tr1/stdint.h: Likewise.
1633         * include/tr1/ctype.h: Likewise.
1634         * include/tr1/random.h: Likewise.
1635         * include/tr1/shared_ptr.h: Likewise.
1636         * include/ext/mt_allocator.h: Likewise.
1637         * include/ext/sso_string_base.h: Likewise.
1638         * include/ext/debug_allocator.h: Likewise.
1639         * include/ext/vstring_fwd.h: Likewise.
1640         * include/ext/pointer.h: Likewise.
1641         * include/ext/pod_char_traits.h: Likewise.
1642         * include/ext/malloc_allocator.h: Likewise.
1643         * include/ext/vstring.h: Likewise.
1644         * include/ext/bitmap_allocator.h: Likewise.
1645         * include/ext/pool_allocator.h: Likewise.
1646         * include/ext/type_traits.h: Likewise.
1647         * include/ext/ropeimpl.h: Likewise.
1648         * include/ext/codecvt_specializations.h: Likewise.
1649         * include/ext/throw_allocator.h: Likewise.
1650         * include/ext/extptr_allocator.h: Likewise.
1651         * include/ext/atomicity.h: Likewise.
1652         * include/ext/concurrence.h: Likewise.
1653         * include/c_compatibility/wchar.h: Likewise.
1654         * include/c_compatibility/stdint.h: Likewise.
1655         * include/backward/hash_fun.h: Likewise.
1656         * include/backward/binders.h: Likewise.
1657         * include/backward/hashtable.h: Likewise.
1658         * include/backward/auto_ptr.h: Likewise.
1659         * libsupc++/eh_arm.cc: Likewise.
1660         * libsupc++/unwind-cxx.h: Likewise.
1661         * libsupc++/si_class_type_info.cc: Likewise.
1662         * libsupc++/vec.cc: Likewise.
1663         * libsupc++/class_type_info.cc: Likewise.
1664         * libsupc++/vmi_class_type_info.cc: Likewise.
1665         * libsupc++/guard_error.cc: Likewise.
1666         * libsupc++/bad_typeid.cc: Likewise.
1667         * libsupc++/eh_personality.cc: Likewise.
1668         * libsupc++/atexit_arm.cc: Likewise.
1669         * libsupc++/pmem_type_info.cc: Likewise.
1670         * libsupc++/vterminate.cc: Likewise.
1671         * libsupc++/eh_terminate.cc: Likewise.
1672         * libsupc++/bad_cast.cc: Likewise.
1673         * libsupc++/exception_ptr.h: Likewise.
1674         * libsupc++/eh_throw.cc: Likewise.
1675         * libsupc++/bad_alloc.cc: Likewise.
1676         * libsupc++/nested_exception.cc: Likewise.
1677         * libsupc++/pointer_type_info.cc: Likewise.
1678         * libsupc++/pbase_type_info.cc: Likewise.
1679         * libsupc++/bad_array_new.cc: Likewise.
1680         * libsupc++/pure.cc: Likewise.
1681         * libsupc++/eh_exception.cc: Likewise.
1682         * libsupc++/bad_array_length.cc: Likewise.
1683         * libsupc++/cxxabi.h: Likewise.
1684         * libsupc++/guard.cc: Likewise.
1685         * libsupc++/eh_catch.cc: Likewise.
1686         * libsupc++/cxxabi_forced.h: Likewise.
1687         * libsupc++/tinfo.h: Likewise.
1688
1689 2024-10-24  François Dumont  <frs.dumont@gmail.com>
1690
1691         * testsuite/23_containers/unordered_map/96088.cc (test03): Fix increments
1692         value when _GLIBCXX_USE_CXX11_ABI is equal to 0.
1693
1694 2024-10-24  Jonathan Wakely  <jwakely@redhat.com>
1695
1696         * testsuite/26_numerics/complex/ext_c++23.cc: Fix typo in macro.
1697         * testsuite/26_numerics/headers/cmath/constexpr_std_c++23.cc:
1698         Likewise.
1699         * testsuite/26_numerics/headers/cmath/functions_std_c++23.cc:
1700         Likewise.
1701         * testsuite/26_numerics/headers/cmath/nextafter_c++23.cc:
1702         Likewise.
1703
1704 2024-10-24  Jonathan Wakely  <jwakely@redhat.com>
1705
1706         * include/std/variant (__throw_bad_variant_access(unsigned)):
1707         Define new function as inline friend, with namespace-scope
1708         declaration using noreturn attribute.
1709         (__throw_bad_variant_access(const char*)): Remove.
1710         (__throw_bad_variant_access(bool)): Remove.
1711         (visit, visit<R>): Adjust calls to __throw_bad_variant_access.
1712
1713 2024-10-24  Ricardo Jesus  <rjj@nvidia.com>
1714
1715         * config/cpu/aarch64/opt/ext/opt_random.h (__VEXT): Replace uses
1716         of __builtin_shuffle with __builtin_shufflevector.
1717         (__aarch64_lsl_128): Move shift amount to a template parameter.
1718         (__aarch64_lsr_128): Move shift amount to a template parameter.
1719         (__aarch64_recursion): Update call sites of __aarch64_lsl_128
1720         and __aarch64_lsr_128.
1721
1722 2024-10-23  Jonathan Wakely  <jwakely@redhat.com>
1723
1724         * testsuite/18_support/headers/cstdalign/macros.cc: New test.
1725
1726 2024-10-23  Jonathan Wakely  <jwakely@redhat.com>
1727
1728         * doc/xml/manual/evolution.xml: Document that assertions are
1729         enabled for unoptimized builds.
1730         * doc/html/*: Regenerate.
1731
1732 2024-10-23  Jonathan Wakely  <jwakely@redhat.com>
1733
1734         * doc/xml/manual/test.xml: Add GLIBCXX_TESTSUITE_STDS example.
1735         * doc/html/manual/test.html: Regenerate.
1736
1737 2024-10-23  Jonathan Wakely  <jwakely@redhat.com>
1738
1739         * include/bits/basic_string.h (assign(Iter, Iter)): Call
1740         std::to_address instead of __to_address.
1741
1742 2024-10-23  François Dumont  <frs.dumont@gmail.com>
1743
1744         PR libstdc++/115285
1745         * include/bits/hashtable.h (_S_forward_key<_Kt>): Always return a temporary
1746         key_type instance.
1747         * testsuite/23_containers/unordered_map/96088.cc: Adapt to additional instanciation.
1748         Also check that mapped_type is not instantiated when there is no insertion.
1749         * testsuite/23_containers/unordered_multimap/96088.cc: Adapt to additional
1750         instanciation.
1751         * testsuite/23_containers/unordered_multiset/96088.cc: Likewise.
1752         * testsuite/23_containers/unordered_set/96088.cc: Likewise.
1753         * testsuite/23_containers/unordered_set/pr115285.cc: New test case.
1754
1755 2024-10-22  Patrick Palka  <ppalka@redhat.com>
1756
1757         * include/std/ranges (concat_view::begin): Add space after
1758         'requires' starting a requires-clause.
1759         (concat_view::end): Likewise.  Refine condition for returning an
1760         iterator rather than default_sentinel as per LWG 4166.
1761         * testsuite/std/ranges/concat/1.cc (test03): Verify LWG 4166
1762         example.
1763
1764 2024-10-22  Jonathan Wakely  <jwakely@redhat.com>
1765
1766         * include/bits/basic_string.h (basic_string::assign): Replace
1767         use of __to_address with __niter_base or std::to_address as
1768         appropriate.
1769         * include/bits/ptr_traits.h (__to_address): Add comment.
1770         * include/bits/shared_ptr_base.h (__shared_ptr): Qualify calls
1771         to __to_address.
1772         * include/bits/stl_algo.h (find): Replace use of __to_address
1773         with __niter_base or std::to_address as appropriate. Only use
1774         either of them when the range is not empty.
1775         * include/bits/stl_iterator.h (__to_address): Remove overload
1776         for __normal_iterator.
1777         * include/debug/safe_iterator.h (__to_address): Remove overload
1778         for _Safe_iterator.
1779         * include/std/ranges (views::counted): Replace use of
1780         __to_address with std::to_address.
1781         * testsuite/24_iterators/normal_iterator/to_address.cc: Removed.
1782
1783 2024-10-21  Jonathan Wakely  <jwakely@redhat.com>
1784
1785         * testsuite/26_numerics/headers/cmath/types_std_c++0x_neg.cc:
1786         Move to ...
1787         * testsuite/26_numerics/headers/cmath/specfun_c++17.cc: here and
1788         adjust test to be valid for all -std dialects.
1789
1790 2024-10-21  Jonathan Wakely  <jwakely@redhat.com>
1791
1792         * include/bits/stl_vector.h (vector::_M_data_ptr): Remove
1793         non-const overloads. Always return non-const pointer.
1794
1795 2024-10-21  Jonathan Wakely  <jwakely@redhat.com>
1796
1797         PR libstdc++/117220
1798         * include/bits/stl_iterator.h: Move _GLIBCXX_NODISCARD
1799         annotations after __attribute__((__always_inline__)).
1800
1801 2024-10-18  Jonathan Wakely  <jwakely@redhat.com>
1802
1803         * include/bits/ranges_algobase.h (ranges::__assign_one): Remove.
1804         (__copy_or_move, __copy_or_move_backward): Use std::__assign_one
1805         instead of ranges::__assign_one.
1806
1807 2024-10-18  Jonathan Wakely  <jwakely@redhat.com>
1808
1809         * include/bits/stl_algobase.h (__copy_move_a1, __copy_move_a)
1810         (__copy_move_backward_a1, __copy_move_backward_a, move_backward)
1811         (__fill_a1, __fill_a, fill, __fill_n_a, fill_n, __equal_aux):
1812         Add always_inline attribute to one-line forwarding functions.
1813
1814 2024-10-18  Jonathan Wakely  <jwakely@redhat.com>
1815
1816         * include/bits/stl_algo.h (find): Add nodiscard.
1817
1818 2024-10-18  Jonathan Wakely  <jwakely@redhat.com>
1819
1820         PR libstdc++/115444
1821         PR libstdc++/114817
1822         * include/bits/stl_algo.h (__copy_n): Remove generic overload
1823         and overload for random access iterators.
1824         (copy_n): Inline generic version of __copy_n here. Do not defer
1825         to std::copy for random access iterators.
1826         * include/bits/stl_algobase.h (__copy_move): Remove.
1827         (__nothrow_contiguous_iterator, __memcpyable_iterators): New
1828         concepts.
1829         (__assign_one, _GLIBCXX_TO_ADDR, _GLIBCXX_ADVANCE): New helpers.
1830         (__copy_move_a2): Inline __copy_move logic and conditional
1831         memmove optimization into the most generic overload.
1832         (__copy_n_a): Likewise.
1833         (__copy_move_backward): Remove.
1834         (__copy_move_backward_a2): Inline __copy_move_backward logic and
1835         memmove optimization into the most generic overload.
1836         * testsuite/20_util/specialized_algorithms/uninitialized_copy/114817.cc:
1837         New test.
1838         * testsuite/20_util/specialized_algorithms/uninitialized_copy_n/114817.cc:
1839         New test.
1840         * testsuite/25_algorithms/copy/114817.cc: New test.
1841         * testsuite/25_algorithms/copy/115444.cc: New test.
1842         * testsuite/25_algorithms/copy_n/114817.cc: New test.
1843
1844 2024-10-18  Jonathan Wakely  <jwakely@redhat.com>
1845
1846         * include/bits/stl_iterator.h (__normal_iterator): Make all
1847         members and overloaded operators constexpr before C++20, and add
1848         always_inline attribute
1849         (__to_address): Add nodiscard and always_inline attributes.
1850         (__make_move_if_noexcept_iterator): Add nodiscard
1851         and make unconditionally constexpr.
1852         (__niter_base(__normal_iterator), __niter_base(Iter)):
1853         Add nodiscard and always_inline attributes.
1854         (__niter_base(reverse_iterator), __niter_base(move_iterator))
1855         (__miter_base): Add inline.
1856         (__niter_wrap(From, To)): Add nodiscard attribute.
1857         (__niter_wrap(const Iter&, Iter)): Add nodiscard and
1858         always_inline attributes.
1859
1860 2024-10-18  Jonathan Wakely  <jwakely@redhat.com>
1861
1862         PR libstdc++/68350
1863         PR libstdc++/93059
1864         * include/bits/stl_uninitialized.h (__check_constructible)
1865         (_GLIBCXX_USE_ASSIGN_FOR_INIT): Remove.
1866         [C++98] (__unwrappable_niter): New trait.
1867         (__uninitialized_copy<true>): Replace use of std::copy.
1868         (uninitialized_copy): Fix Doxygen comments. Open-code memcpy
1869         optimization for C++11 and later.
1870         (__uninitialized_fill<true>): Replace use of std::fill.
1871         (uninitialized_fill): Fix Doxygen comments. Open-code memset
1872         optimization for C++11 and later.
1873         (__uninitialized_fill_n<true>): Replace use of std::fill_n.
1874         (uninitialized_fill_n): Fix Doxygen comments. Open-code memset
1875         optimization for C++11 and later.
1876         * testsuite/20_util/specialized_algorithms/uninitialized_copy/64476.cc:
1877         Adjust expected behaviour to match what the standard specifies.
1878         * testsuite/20_util/specialized_algorithms/uninitialized_fill_n/sizes.cc:
1879         Likewise.
1880         * testsuite/20_util/specialized_algorithms/uninitialized_copy/1.cc:
1881         Adjust dg-error directives.
1882         * testsuite/20_util/specialized_algorithms/uninitialized_copy/89164.cc:
1883         Likewise.
1884         * testsuite/20_util/specialized_algorithms/uninitialized_copy_n/89164.cc:
1885         Likewise.
1886         * testsuite/20_util/specialized_algorithms/uninitialized_fill/89164.cc:
1887         Likewise.
1888         * testsuite/20_util/specialized_algorithms/uninitialized_fill_n/89164.cc:
1889         Likewise.
1890         * testsuite/23_containers/vector/cons/89164.cc: Likewise.
1891         * testsuite/23_containers/vector/cons/89164_c++17.cc: Likewise.
1892
1893 2024-10-18  Jonathan Wakely  <jwakely@redhat.com>
1894
1895         * include/bits/stl_algobase.h (__niter_base, __niter_wrap): Move
1896         to ...
1897         * include/bits/stl_iterator.h: ... here.
1898         (__niter_base, __miter_base): Move all overloads to the end of
1899         the header.
1900         * testsuite/24_iterators/normal_iterator/wrapping.cc: New test.
1901
1902 2024-10-16  Jonathan Wakely  <jwakely@redhat.com>
1903
1904         * python/libstdcxx/v6/printers.py (strip_fundts_namespace): New.
1905         (StdExpAnyPrinter, StdExpOptionalPrinter): Use it.
1906
1907 2024-10-15  Jonathan Wakely  <jwakely@redhat.com>
1908
1909         PR libstdc++/106676
1910         * include/bits/iterator_concepts.h (__cpp17_fwd_iterator): Use
1911         is_reference instead of is_value_reference.
1912         rvalue references.
1913         * include/std/ranges (transform_view:__iter_cat::_S_iter_cat):
1914         Likewise.
1915         (zip_transform_view::__iter_cat::_S_iter_cat): Likewise.
1916         (adjacent_transform_view::__iter_cat::_S_iter_cat): Likewise.
1917         (join_with_view::__iter_cat::_S_iter_cat): Likewise.
1918         * testsuite/std/ranges/adaptors/transform.cc: Check
1919         iterator_category when the transformation function returns an
1920         rvalue reference type.
1921
1922 2024-10-14  Jonathan Wakely  <jwakely@redhat.com>
1923
1924         * include/std/ranges (transform_view:_Iterator): Use const F&
1925         to determine value_type and iterator_category of
1926         _Iterator<true>, as per LWG 3564.
1927         * testsuite/std/ranges/adaptors/transform.cc: Check value_type
1928         and iterator_category.
1929
1930 2024-10-14  Jonathan Wakely  <jwakely@redhat.com>
1931
1932         PR libstdc++/117135
1933         * config/locale/generic/time_members.cc
1934         (__timepunct<wchar_t>::_M_initialize_timepunc): Set
1935         _M_date_time_format for C locale. Set %Ex formats to the same
1936         values as the %x formats.
1937
1938 2024-10-14  Jonathan Wakely  <jwakely@redhat.com>
1939
1940         * include/bits/version.def (constrained_equality): Bump value.
1941         * include/bits/version.h: Regenerate.
1942         * include/std/expected (operator==): Add constraints and
1943         noexcept specifiers.
1944         * testsuite/20_util/optional/relops/constrained.cc: Adjust
1945         check for feature test macro.
1946         * testsuite/20_util/pair/comparison_operators/constrained.cc:
1947         Likewise.
1948         * testsuite/20_util/tuple/comparison_operators/constrained.cc:
1949         Likewise.
1950         * testsuite/20_util/variant/relops/constrained.cc: Likewise.
1951         * testsuite/20_util/expected/equality_constrained.cc: New test.
1952
1953 2024-10-14  Jonathan Wakely  <jwakely@redhat.com>
1954
1955         PR libstdc++/117094
1956         * include/bits/ranges_algobase.h (__fill_fn): Use std::move for
1957         iterator that might not be copyable.
1958         * testsuite/25_algorithms/fill/constrained.cc: Check
1959         non-copyable iterator with sized sentinel.
1960
1961 2024-10-14  Jonathan Wakely  <jwakely@redhat.com>
1962
1963         PR libstdc++/93059
1964         * include/bits/stl_algobase.h (__fill_a1(T*, T*, const T&)):
1965         Change template parameters and enable_if condition to allow the
1966         fill value to be an integer.
1967
1968 2024-10-14  Jonathan Wakely  <jwakely@redhat.com>
1969
1970         PR libstdc++/93059
1971         * include/bits/cpp_type_traits.h (__memcpyable): Add partial
1972         specialization for pointers to distinct types.
1973         (__memcpyable_integer): New trait to control which types can use
1974         cross-type memcpy optimizations.
1975
1976 2024-10-13  Sam James  <sam@gentoo.org>
1977
1978         * testsuite/17_intro/names_fortify.cc: Undefine _FORTIFY_SOURCE.
1979
1980 2024-10-13  Jonathan Wakely  <jwakely@redhat.com>
1981
1982         PR libstdc++/117121
1983         * include/bits/ranges_algobase.h (copy_backward): Decrement
1984         output iterator before assigning one element through it.
1985         * testsuite/25_algorithms/copy/108846.cc: Ensure the algorithm's
1986         effects are correct for a single memcpyable element.
1987         * testsuite/25_algorithms/copy_backward/108846.cc: Likewise.
1988         * testsuite/25_algorithms/copy_n/108846.cc: Likewise.
1989
1990 2024-10-11  Jonathan Wakely  <jwakely@redhat.com>
1991
1992         * include/bits/stl_iterator.h (__niter_base(move_iterator<I>))
1993         (__is_move_iterator, __miter_base, _GLIBCXX_MAKE_MOVE_ITERATOR)
1994         (_GLIBCXX_MAKE_MOVE_IF_NOEXCEPT_ITERATOR): Move earlier in the
1995         file.
1996
1997 2024-10-11  Jonathan Wakely  <jwakely@redhat.com>
1998
1999         * include/bits/cpp_type_traits.h (__is_byte<byte>): Guard with
2000         __glibcxx_byte macro instead of checking __cplusplus.
2001
2002 2024-10-11  Jonathan Wakely  <jwakely@redhat.com>
2003
2004         PR libstdc++/117085
2005         * include/bits/chrono_io.h (__formatter_chrono::_M_c): Add L
2006         option to format string.
2007         * testsuite/std/time/format.cc: Move to...
2008         * testsuite/std/time/format/format.cc: ...here.
2009         * testsuite/std/time/format_localized.cc: Move to...
2010         * testsuite/std/time/format/localized.cc: ...here.
2011         * testsuite/std/time/format/pr117085.cc: New test.
2012
2013 2024-10-11  Jonathan Wakely  <jwakely@redhat.com>
2014
2015         * testsuite/22_locale/time_get/get/char/5.cc: Fix dg-do
2016         directive.
2017         * testsuite/22_locale/time_get/get/wchar_t/5.cc: Likewise.
2018
2019 2024-10-11  Jonathan Wakely  <jwakely@redhat.com>
2020
2021         * testsuite/20_util/duration/io.cc [!__cpp_lib_char8_t]: Define
2022         char8_t as a typedef for unsigned char.
2023         * testsuite/std/format/parse_ctx_neg.cc: Skip for -fno-char8_t.
2024
2025 2024-10-09  Jonathan Wakely  <jwakely@redhat.com>
2026
2027         PR libstdc++/116210
2028         * testsuite/17_intro/names.cc (sz): Undef for versions of Glibc
2029         that use it in the fortify wrappers.
2030         * testsuite/17_intro/names_fortify.cc: New test.
2031
2032 2024-10-09  Jonathan Wakely  <jwakely@redhat.com>
2033
2034         PR libstdc++/116969
2035         * include/bits/locale_facets_nonio.tcc (money_put::__do_put):
2036         Remove diagnostic pragmas.
2037         (__glibcxx_snprintfibm128): Declare type manually, instead of
2038         using __typeof__(__builtin_snprintf).
2039
2040 2024-10-09  Frank Scheiner  <frank.scheiner@web.de>
2041
2042         * testsuite/17_intro/names.cc [__linux__ && __ia64__]: Undefine
2043         'u' as used in glibc headers.
2044
2045 2024-10-09  Jonathan Wakely  <jwakely@redhat.com>
2046
2047         PR libstdc++/116992
2048         * include/bits/semaphore_base.h (_GLIBCXX_USE_POSIX_SEMAPHORE):
2049         Undefine and issue a warning if POSIX sem_t is not supported.
2050         * testsuite/30_threads/semaphore/platform_try_acquire_for.cc:
2051         Prune new warning.
2052
2053 2024-10-09  Jonathan Wakely  <jwakely@redhat.com>
2054
2055         PR libstdc++/116991
2056         * include/std/complex (__complex_acos): Cast literal to
2057         destination type.
2058
2059 2024-10-09  Jonathan Wakely  <jwakely@redhat.com>
2060
2061         * include/std/latch (latch::count_down): Add assertions for
2062         preconditions. Cast parameter to avoid -Wsign-compare on some
2063         targets.
2064
2065 2024-10-09  Jonathan Wakely  <jwakely@redhat.com>
2066
2067         PR libstdc++/112808
2068         * doc/xml/manual/using.xml (_GLIBCXX_ASSERTIONS): Document
2069         implicit definition for -O0 compilation.
2070         (_GLIBCXX_NO_ASSERTIONS): Document.
2071         * doc/html/manual/using_macros.html: Regenerate.
2072         * include/bits/c++config [!__OPTIMIZE__] (_GLIBCXX_ASSERTIONS):
2073         Define for unoptimized builds.
2074
2075 2024-10-09  Jonathan Wakely  <jwakely@redhat.com>
2076
2077         PR libstdc++/61458
2078         * doc/doxygen/user.cfg.in (GENERATE_BUGLIST): Set to NO.
2079         * include/std/type_traits (__aligned_storage_msa): Remove.
2080         (__aligned_storage_max_align_t): New struct.
2081         (__aligned_storage_default_alignment): New function.
2082         (aligned_storage): Use __aligned_storage_default_alignment for
2083         default alignment. Replace union with a struct containing an
2084         aligned buffer. Improve Doxygen comment.
2085         (aligned_storage_t): Use __aligned_storage_default_alignment for
2086         default alignment.
2087
2088 2024-10-09  Jonathan Wakely  <jwakely@redhat.com>
2089
2090         * include/bits/shared_ptr_base.h: Remove cv-qualifiers from
2091         type managed by _Sp_counted_ptr_inplace, as per LWG 3210.
2092         * include/bits/stl_construct.h: Do not cast away cv-qualifiers
2093         when passing pointer to placement new.
2094         * include/std/expected: Use remove_cv_t for union member, as per
2095         LWG 3891.
2096         * testsuite/20_util/allocator/void.cc: Do not test construction
2097         via const pointer.
2098
2099 2024-10-09  Jonathan Wakely  <jwakely@redhat.com>
2100
2101         * include/bits/stl_construct.h (construct_at): Support array
2102         types (LWG 3436).
2103         * testsuite/20_util/specialized_algorithms/construct_at/array.cc:
2104         New test.
2105         * testsuite/20_util/specialized_algorithms/construct_at/array_neg.cc:
2106         New test.
2107
2108 2024-10-09  Jonathan Wakely  <jwakely@redhat.com>
2109
2110         * include/bits/chrono_io.h (__formatter_chrono::_M_c): Add
2111         [[unlikely]] attribute to condition for missing %c format in
2112         locale. Use %T instead of %H:%M:%S in fallback.
2113
2114 2024-10-09  Jonathan Wakely  <jwakely@redhat.com>
2115
2116         PR libstdc++/116755
2117         * include/bits/chrono_io.h (operator<<): Use +d.count() for
2118         duration inserter.
2119         (__formatter_chrono::_M_format): Likewise for %Q format.
2120         * testsuite/20_util/duration/io.cc: Test durations with
2121         character types as reps.
2122
2123 2024-10-08  Jakub Jelinek  <jakub@redhat.com>
2124
2125         * include/bits/unicode.h (std::__unicode::__v15_1_0): Rename inline
2126         namespace to ...
2127         (std::__unicode::__v16_0_0): ... this.
2128         (_GLIBCXX_GET_UNICODE_DATA): Change from 150100 to 160000.
2129         * include/bits/unicode-data.h: Regenerated.
2130         * testsuite/ext/unicode/properties.cc: Check for _Gcb_SpacingMark
2131         on U+11F03 rather than U+1D16D as the latter lost SpacingMark property
2132         in Unicode 16.0.
2133
2134 2024-10-05  Giuseppe D'Angelo  <giuseppe.dangelo@kdab.com>
2135
2136         * include/bits/version.def: Added the feature-testing macro.
2137         * include/bits/version.h: Regenerated.
2138         * include/std/type_traits: Add support for
2139         std::is_virtual_base_of and std::is_virtual_base_of_v,
2140         implemented in terms of the compiler builtin.
2141         * testsuite/20_util/is_virtual_base_of/value.cc: New test.
2142
2143 2024-10-05  Patrick Palka  <ppalka@redhat.com>
2144
2145         * include/bits/ranges_base.h (__distance_fn::operator()):
2146         Adjust iterator/sentinel overloads as per LWG 3664.
2147         * testsuite/24_iterators/range_operations/distance.cc:
2148         Test LWG 3664 example.
2149
2150 2024-10-04  Patrick Palka  <ppalka@redhat.com>
2151
2152         * include/std/ranges (single_view::empty): Define as per LWG 4035.
2153         (iota_view::empty): Define as per LWG 4001.
2154         (lazy_split_view::_OuterIter::value_type): Remove default
2155         constructor and make other constructor private as per LWG 4013.
2156         (common_view::begin): Disable non-const overload for simple
2157         views as per LWG 4012.
2158         (common_view::end): Likewise.
2159         (adjacent_view::base): Define as per LWG 3848.
2160         (adjacent_transform_view::base): Likewise.
2161         (chunk_view::_InnerIter::iter_move): Define as per LWG 3851.
2162         (chunk_view::_InnerIter::itep_swap): Likewise.
2163         (slide_view::base): Define as per LWG 3848.
2164         (repeat_view): Adjust deduction guide as per LWG 4053.
2165         (_Repeat::operator()): Adjust single-parameter overload as per
2166         LWG 4054.
2167         * testsuite/std/ranges/adaptors/adjacent/1.cc: Verify existence
2168         of base member function.
2169         * testsuite/std/ranges/adaptors/adjacent_transform/1.cc: Likewise.
2170         * testsuite/std/ranges/adaptors/chunk/1.cc: Test LWG 3851 example.
2171         * testsuite/std/ranges/adaptors/slide/1.cc: Verify existence of
2172         base member function.
2173         * testsuite/std/ranges/iota/iota_view.cc: Test LWG 4001 example.
2174         * testsuite/std/ranges/repeat/1.cc: Test LWG 4053/4054 examples.
2175
2176 2024-10-04  Jonathan Wakely  <jwakely@redhat.com>
2177
2178         * include/parallel/algobase.h (search): Use sequential algorithm
2179         for constant evaluation.
2180         * include/parallel/algorithmfwd.h (search): Add
2181         _GLIBCXX20_CONSTEXPR.
2182         * include/parallel/multiway_merge.h: Remove stray semi-colon.
2183         * include/parallel/multiseq_selection.h: Add diagnostic pragmas
2184         for -Wlong-long warning.
2185         * include/parallel/quicksort.h: Likewise.
2186         * include/parallel/random_number.h: Likewise.
2187         * include/parallel/settings.h: Likewise.
2188         * include/parallel/workstealing.h: Replace ++ and -- on volatile
2189         variables.
2190         * testsuite/17_intro/names.cc: Skip names defined by
2191         <tr1/random>.
2192         * testsuite/20_util/pair/dangling_ref.cc: Skip test if Parallel
2193         Mode is enabled.
2194         * testsuite/20_util/tuple/dangling_ref.cc: Likewise.
2195
2196 2024-10-04  Jonathan Wakely  <jwakely@redhat.com>
2197
2198         PR libstdc++/116964
2199         * include/std/shared_mutex (__shared_mutex_cv): Use [this] for
2200         lambda captures.
2201         (shared_timed_mutex) [!_GLIBCXX_USE_PTHREAD_RWLOCK_T]: Likewise.
2202
2203 2024-10-03  Jonathan Wakely  <jwakely@redhat.com>
2204
2205         * include/bits/unicode.h (__unicode::__is_incb_linker): Use
2206         _GLIBCXX_STD_A namespace for std::find.
2207
2208 2024-10-03  Jonathan Wakely  <jwakely@redhat.com>
2209
2210         PR libstdc++/116944
2211         * include/parallel/base.h: Move diagnostic pragmas earlier.
2212
2213 2024-10-03  Jonathan Wakely  <jwakely@redhat.com>
2214
2215         * include/bits/locale_facets_nonio.tcc (money_put::__do_get):
2216         Ignore -Wformat warning for __ibm128 arguments.
2217         * include/tr1/tuple (ignore): Ignore -Wunused warning.
2218
2219 2024-10-03  François Dumont  <fdumont@gcc.gnu.org>
2220
2221         * include/bits/hashtable_policy.h (_NodeBuilder<>::_S_build): Remove
2222         const qualification on _NodeGenerator instance.
2223         (_ReuseOrAllocNode<>::operator()(_Args&&...)): Remove const qualification.
2224         (_ReuseOrAllocNode<>::_M_nodes): Remove mutable.
2225         (_Insert_base<>::_M_insert_range): Remove _NodeGetter const qualification.
2226         (_Hash_code_base<>::_M_bucket_index(const _Hash_node_value<>&, size_t)):
2227         Simplify noexcept declaration, we already static_assert that _RangeHash functor
2228         is noexcept.
2229         * include/bits/hashtable.h: Rework comments. Remove const qualifier on
2230         _NodeGenerator& arguments.
2231
2232 2024-10-02  Jonathan Wakely  <jwakely@redhat.com>
2233
2234         * config/locale/dragonfly/time_members.cc
2235         (__timepunct<char>::_M_initialize_timepunc)
2236         (__timepunct<wchar_t>::_M_initialize_timepunc): Set
2237         _M_date_time_format for C locale. Set %Ex formats to the same
2238         values as the %x formats.
2239         * config/locale/generic/time_members.cc: Likewise.
2240         * config/locale/gnu/time_members.cc: Likewise.
2241         * testsuite/22_locale/time_get/get/char/5.cc: New test.
2242         * testsuite/22_locale/time_get/get/wchar_t/5.cc: New test.
2243
2244 2024-10-02  Jonathan Wakely  <jwakely@redhat.com>
2245
2246         * include/bits/chrono_io.h (__detail::__use_floor): New
2247         function.
2248         (__detail::__round): New function.
2249         (from_stream): Use __detail::__round.
2250         * testsuite/std/time/clock/file/io.cc: Check for expected
2251         rounding in parse.
2252         * testsuite/std/time/clock/gps/io.cc: Likewise.
2253
2254 2024-10-02  Jonathan Wakely  <jwakely@redhat.com>
2255
2256         * include/bits/postypes.h: Fix -Wlong-long warning.
2257
2258 2024-10-01  Hans-Peter Nilsson  <hp@axis.com>
2259
2260         PR libstdc++/116895
2261         * config/os/newlib/ctype_base.h: Avoid signed-overflow warnings by
2262         explicitly casting initializer expressions to mask.
2263
2264 2024-09-27  Jonathan Wakely  <jwakely@redhat.com>
2265
2266         * include/bits/istream.tcc: Add diagnostic pragmas around uses
2267         of long long and extern template.
2268         * include/bits/locale_facets.h: Likewise.
2269         * include/bits/locale_facets.tcc: Likewise.
2270         * include/bits/locale_facets_nonio.tcc: Likewise.
2271         * include/bits/ostream.tcc: Likewise.
2272         * include/bits/stl_algobase.h: Likewise.
2273         * include/c_global/cstdlib: Likewise.
2274         * include/ext/pb_ds/detail/resize_policy/hash_prime_size_policy_imp.hpp:
2275         Likewise.
2276         * include/ext/pointer.h: Likewise.
2277         * include/ext/stdio_sync_filebuf.h: Likewise.
2278         * include/std/istream: Likewise.
2279         * include/std/ostream: Likewise.
2280         * include/tr1/cmath: Likewise.
2281         * include/tr1/type_traits: Likewise.
2282         * include/tr1/functional_hash.h: Likewise. Remove semi-colons
2283         at namespace scope that aren't needed after macro expansion.
2284         * include/tr1/tuple: Remove semi-colon at namespace scope.
2285         * include/bits/vector.tcc: Change LL suffix to just L.
2286
2287 2024-09-27  Jonathan Wakely  <jwakely@redhat.com>
2288
2289         * include/experimental/bits/fs_path.h (path::_Cvt): Refactor to
2290         use if-constexpr.
2291         (path::string(const Allocator&)): Likewise.
2292
2293 2024-09-27  Jonathan Wakely  <jwakely@redhat.com>
2294
2295         * include/bits/basic_string.tcc (resize_for_overwrite): Fix
2296         -Wsign-compare warning.
2297         * include/bits/cow_string.h (resize_for_overwrite): Likewise.
2298
2299 2024-09-27  Jonathan Wakely  <jwakely@redhat.com>
2300
2301         * testsuite/20_util/bind/dangling_ref.cc: Add an additional
2302         dg-warning for -Wreturn-local-addr warning.
2303         * testsuite/30_threads/packaged_task/cons/dangling_ref.cc:
2304         Likewise.
2305
2306 2024-09-27  Jonathan Wakely  <jwakely@redhat.com>
2307
2308         * include/bits/atomic_base.h (__atomic_base<T*>::_M_type_size):
2309         Replace overloaded functions with static _S_type_size.
2310         * include/std/atomic (atomic<T*>): Use is_object_v instead of
2311         is_object.
2312         * testsuite/29_atomics/atomic/operators/pointer_partial_void.cc:
2313         Add dg-warning for -Wpointer-arith warning.
2314
2315 2024-09-26  Jonathan Wakely  <jwakely@redhat.com>
2316
2317         * include/bits/cow_string.h (__resize_for_overwrite): Add
2318         inline keyword to function with always_inline attribute.
2319
2320 2024-09-26  Nathaniel Shead  <nathanieloshead@gmail.com>
2321
2322         PR libstdc++/115126
2323         * include/bits/shared_ptr.h (std::__is_shared_ptr): Remove
2324         unnecessary 'static'.
2325         * include/bits/unique_ptr.h (std::__is_unique_ptr): Likewise.
2326         * include/std/future (std::__create_task_state): Likewise.
2327         * include/std/shared_mutex (_GLIBCXX_GTRHW): Likewise.
2328         (__glibcxx_rwlock_init): Likewise.
2329         (__glibcxx_rwlock_timedrdlock): Likewise.
2330         (__glibcxx_rwlock_timedwrlock): Likewise.
2331         (__glibcxx_rwlock_rdlock): Likewise.
2332         (__glibcxx_rwlock_tryrdlock): Likewise.
2333         (__glibcxx_rwlock_wrlock): Likewise.
2334         (__glibcxx_rwlock_trywrlock): Likewise.
2335         (__glibcxx_rwlock_unlock): Likewise.
2336         (__glibcxx_rwlock_destroy): Likewise.
2337         (__glibcxx_rwlock_init): Likewise.
2338         * include/pstl/algorithm_impl.h
2339         (__pstl::__internal::__set_algo_cut_off): Mark inline.
2340         * include/pstl/unseq_backend_simd.h
2341         (__pstl::__unseq_backend::__lane_size): Mark inline.
2342
2343 2024-09-26  Jakub Jelinek  <jakub@redhat.com>
2344
2345         PR libstdc++/116859
2346         * config/os/bsd/freebsd/os_defines.h
2347         (_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC,
2348         _GLIBCXX_USE_C99_FLOAT_TRANSCENDENTALS_DYNAMIC): Avoid
2349         -Wexpansion-to-defined warnings.
2350         * config/os/bsd/dragonfly/os_defines.h
2351         (_GLIBCXX_USE_C99_LONG_LONG_DYNAMIC): Likewise.
2352
2353 2024-09-26  Jonathan Wakely  <jwakely@redhat.com>
2354             Andrew Waterman  <andrew@sifive.com>
2355
2356         PR libstdc++/113578
2357         * include/std/ostream (_S_cast_flt): New static member function
2358         to restore signbit after casting to double or long double.
2359         (operator<<(float), operator<<(_Float16), operator<<(_Float32))
2360         (operator<<(_Float64), operator(_Float128))
2361         (operator<<(__bfloat16_t)): Use _S_cast_flt.
2362         testsuite/27_io/basic_ostream/inserters_arithmetic/lwg4101.cc:
2363         New test.
2364         * testsuite/27_io/basic_ostream/inserters_arithmetic/lwg4101.cc: New file.
2365
2366 2024-09-26  Jonathan Wakely  <jwakely@redhat.com>
2367
2368         * testsuite/27_io/basic_istringstream/cons/2020.cc: Fix comment
2369         referring to basic_filebuf.
2370         * testsuite/27_io/basic_istringstream/requirements/base_classes.cc:
2371         Likewise.
2372         * testsuite/27_io/basic_ostringstream/cons/2020.cc: Likewise.
2373         * testsuite/27_io/basic_ostringstream/requirements/base_classes.cc:
2374         Likewise.
2375         * testsuite/27_io/basic_stringbuf/cons/2020.cc: Likewise.
2376         * testsuite/27_io/basic_stringbuf/requirements/explicit_instantiation/2.cc:
2377         Likewise.
2378         * testsuite/27_io/basic_stringbuf/requirements/explicit_instantiation/4.cc:
2379         Likewise.
2380         * testsuite/27_io/basic_stringstream/cons/2020.cc: Likewise.
2381         * testsuite/27_io/basic_stringstream/requirements/base_classes.cc:
2382         Likewise.
2383
2384 2024-09-26  Jonathan Wakely  <jwakely@redhat.com>
2385
2386         * include/bits/basic_ios.h (basic_ios::operator bool()):
2387         Add [[nodiscard]] attribute.
2388         (basic_ios::operator!(), basic_ios::rdstate())
2389         (basic_ios::good(), basic_ios::eof(), basic_ios::fail())
2390         (basic_ios::bad(), basic_ios::exceptions(), basic_ios::tie())
2391         (basic_ios::rdbuf(), basic_ios::fill()): Likewise.
2392         * include/bits/ios_base.h (ios_base::flags()): Likewise.
2393         (ios_base::precision(), ios_base::width(), ios_base::getloc()):
2394         Likewise.
2395         * include/std/fstream (basic_filebuf::is_open)
2396         (basic_ifstream::rdbuf(), basic_ifstream::is_open)
2397         (basic_ofstream::rdbuf(), basic_ofstream::is_open)
2398         (basic_fstream::rdbuf(), basic_fstream::is_open): Likewise.
2399         * include/std/spanstream (basic_spanbuf::span())
2400         (basic_ispanstream::span(), basic_ispanstream::rdbuf())
2401         (basic_ospanstream::span(), basic_ospanstream::rdbuf())
2402         (basic_spanstream::span(), basic_spanstream::rdbuf()):
2403         Likewise.
2404         * include/std/sstream (basic_stringbuf::str())
2405         (basic_istringstream::rdbuf(), basic_istringstream::str())
2406         (basic_ostringstream::rdbuf(), basic_ostringstream::str())
2407         (basic_stringstream::rdbuf(), basic_stringstream::str()):
2408         Likewise.
2409         * testsuite/27_io/basic_istream/extractors_arithmetic/char/01.cc:
2410         Suppress -Wunused-result warnings.
2411         * testsuite/27_io/basic_istream/extractors_arithmetic/wchar_t/01.cc:
2412         Likewise.
2413
2414 2024-09-26  Iain Sandoe  <iain@sandoe.co.uk>
2415
2416         PR libstdc++/116853
2417         * include/bits/basic_string.h: Ignore suggest-attribute=format
2418         warning when using posix vsnprintf in to_string() implementations.
2419
2420 2024-09-26  Jonathan Wakely  <jwakely@redhat.com>
2421
2422         * include/std/stacktrace (basic_stacktrace::_Impl::_M_allocate):
2423         Do not assume allocators only throw std::bad_alloc.
2424
2425 2024-09-26  Jonathan Wakely  <jwakely@redhat.com>
2426
2427         PR libstdc++/116857
2428         * libsupc++/guard.cc (__cxa_guard_acquire): Remove
2429         _GLIBCXX_NOTHROW to match declaration in <cxxabi.h>.
2430
2431 2024-09-25  Sam James  <sam@gentoo.org>
2432
2433         PR libstdc++/101831
2434         * testsuite/23_containers/array/capacity/empty.cc: Add missing brace.
2435         * testsuite/23_containers/array/capacity/max_size.cc: Ditto.
2436         * testsuite/23_containers/array/capacity/size.cc: Ditto.
2437
2438 2024-09-25  Jason Merrill  <jason@redhat.com>
2439
2440         * acinclude.m4 (WARN_FLAGS): Remove -Wsystem-headers.
2441         * configure: Regenerate.
2442         * include/bits/algorithmfwd.h: #ifdef out #pragma GCC system_header.
2443         * include/bits/atomic_base.h
2444         * include/bits/atomic_futex.h
2445         * include/bits/atomic_timed_wait.h
2446         * include/bits/atomic_wait.h
2447         * include/bits/basic_ios.h
2448         * include/bits/basic_string.h
2449         * include/bits/boost_concept_check.h
2450         * include/bits/char_traits.h
2451         * include/bits/charconv.h
2452         * include/bits/chrono.h
2453         * include/bits/chrono_io.h
2454         * include/bits/codecvt.h
2455         * include/bits/concept_check.h
2456         * include/bits/cpp_type_traits.h
2457         * include/bits/elements_of.h
2458         * include/bits/enable_special_members.h
2459         * include/bits/erase_if.h
2460         * include/bits/forward_list.h
2461         * include/bits/functional_hash.h
2462         * include/bits/gslice.h
2463         * include/bits/gslice_array.h
2464         * include/bits/hashtable.h
2465         * include/bits/indirect_array.h
2466         * include/bits/invoke.h
2467         * include/bits/ios_base.h
2468         * include/bits/iterator_concepts.h
2469         * include/bits/locale_classes.h
2470         * include/bits/locale_facets.h
2471         * include/bits/locale_facets_nonio.h
2472         * include/bits/localefwd.h
2473         * include/bits/mask_array.h
2474         * include/bits/max_size_type.h
2475         * include/bits/memory_resource.h
2476         * include/bits/memoryfwd.h
2477         * include/bits/move_only_function.h
2478         * include/bits/node_handle.h
2479         * include/bits/ostream_insert.h
2480         * include/bits/out_ptr.h
2481         * include/bits/parse_numbers.h
2482         * include/bits/postypes.h
2483         * include/bits/quoted_string.h
2484         * include/bits/range_access.h
2485         * include/bits/ranges_base.h
2486         * include/bits/refwrap.h
2487         * include/bits/sat_arith.h
2488         * include/bits/semaphore_base.h
2489         * include/bits/slice_array.h
2490         * include/bits/std_abs.h
2491         * include/bits/std_function.h
2492         * include/bits/std_mutex.h
2493         * include/bits/std_thread.h
2494         * include/bits/stl_iterator_base_funcs.h
2495         * include/bits/stl_iterator_base_types.h
2496         * include/bits/stl_tree.h
2497         * include/bits/stream_iterator.h
2498         * include/bits/streambuf_iterator.h
2499         * include/bits/stringfwd.h
2500         * include/bits/this_thread_sleep.h
2501         * include/bits/unique_lock.h
2502         * include/bits/uses_allocator_args.h
2503         * include/bits/utility.h
2504         * include/bits/valarray_after.h
2505         * include/bits/valarray_array.h
2506         * include/bits/valarray_before.h
2507         * include/bits/version.h
2508         * include/c_compatibility/fenv.h
2509         * include/c_compatibility/inttypes.h
2510         * include/c_compatibility/stdint.h
2511         * include/decimal/decimal.h
2512         * include/experimental/bits/net.h
2513         * include/experimental/bits/shared_ptr.h
2514         * include/ext/aligned_buffer.h
2515         * include/ext/alloc_traits.h
2516         * include/ext/atomicity.h
2517         * include/ext/concurrence.h
2518         * include/ext/numeric_traits.h
2519         * include/ext/pod_char_traits.h
2520         * include/ext/pointer.h
2521         * include/ext/stdio_filebuf.h
2522         * include/ext/stdio_sync_filebuf.h
2523         * include/ext/string_conversions.h
2524         * include/ext/type_traits.h
2525         * include/ext/vstring.h
2526         * include/ext/vstring_fwd.h
2527         * include/ext/vstring_util.h
2528         * include/parallel/algorithmfwd.h
2529         * include/parallel/numericfwd.h
2530         * include/tr1/functional_hash.h
2531         * include/tr1/hashtable.h
2532         * include/tr1/random.h
2533         * libsupc++/exception.h
2534         * libsupc++/hash_bytes.h
2535         * include/bits/basic_ios.tcc
2536         * include/bits/basic_string.tcc
2537         * include/bits/fstream.tcc
2538         * include/bits/istream.tcc
2539         * include/bits/locale_classes.tcc
2540         * include/bits/locale_facets.tcc
2541         * include/bits/locale_facets_nonio.tcc
2542         * include/bits/ostream.tcc
2543         * include/bits/sstream.tcc
2544         * include/bits/streambuf.tcc
2545         * include/bits/string_view.tcc
2546         * include/bits/version.tpl
2547         * include/experimental/bits/string_view.tcc
2548         * include/ext/pb_ds/detail/resize_policy/hash_prime_size_policy_imp.hpp
2549         * include/ext/random.tcc
2550         * include/ext/vstring.tcc
2551         * include/tr2/bool_set.tcc
2552         * include/tr2/dynamic_bitset.tcc
2553         * include/bits/c++config
2554         * include/c/cassert
2555         * include/c/cctype
2556         * include/c/cerrno
2557         * include/c/cfloat
2558         * include/c/ciso646
2559         * include/c/climits
2560         * include/c/clocale
2561         * include/c/cmath
2562         * include/c/csetjmp
2563         * include/c/csignal
2564         * include/c/cstdarg
2565         * include/c/cstddef
2566         * include/c/cstdio
2567         * include/c/cstdlib
2568         * include/c/cstring
2569         * include/c/ctime
2570         * include/c/cuchar
2571         * include/c/cwchar
2572         * include/c/cwctype
2573         * include/c_global/cassert
2574         * include/c_global/ccomplex
2575         * include/c_global/cctype
2576         * include/c_global/cerrno
2577         * include/c_global/cfenv
2578         * include/c_global/cfloat
2579         * include/c_global/cinttypes
2580         * include/c_global/ciso646
2581         * include/c_global/climits
2582         * include/c_global/clocale
2583         * include/c_global/cmath
2584         * include/c_global/csetjmp
2585         * include/c_global/csignal
2586         * include/c_global/cstdalign
2587         * include/c_global/cstdarg
2588         * include/c_global/cstdbool
2589         * include/c_global/cstddef
2590         * include/c_global/cstdint
2591         * include/c_global/cstdio
2592         * include/c_global/cstdlib
2593         * include/c_global/cstring
2594         * include/c_global/ctgmath
2595         * include/c_global/ctime
2596         * include/c_global/cuchar
2597         * include/c_global/cwchar
2598         * include/c_global/cwctype
2599         * include/c_std/cassert
2600         * include/c_std/cctype
2601         * include/c_std/cerrno
2602         * include/c_std/cfloat
2603         * include/c_std/ciso646
2604         * include/c_std/climits
2605         * include/c_std/clocale
2606         * include/c_std/cmath
2607         * include/c_std/csetjmp
2608         * include/c_std/csignal
2609         * include/c_std/cstdarg
2610         * include/c_std/cstddef
2611         * include/c_std/cstdio
2612         * include/c_std/cstdlib
2613         * include/c_std/cstring
2614         * include/c_std/ctime
2615         * include/c_std/cuchar
2616         * include/c_std/cwchar
2617         * include/c_std/cwctype
2618         * include/debug/array
2619         * include/debug/bitset
2620         * include/debug/deque
2621         * include/debug/forward_list
2622         * include/debug/list
2623         * include/debug/map
2624         * include/debug/set
2625         * include/debug/string
2626         * include/debug/unordered_map
2627         * include/debug/unordered_set
2628         * include/debug/vector
2629         * include/decimal/decimal
2630         * include/experimental/algorithm
2631         * include/experimental/any
2632         * include/experimental/array
2633         * include/experimental/buffer
2634         * include/experimental/chrono
2635         * include/experimental/contract
2636         * include/experimental/deque
2637         * include/experimental/executor
2638         * include/experimental/filesystem
2639         * include/experimental/forward_list
2640         * include/experimental/functional
2641         * include/experimental/internet
2642         * include/experimental/io_context
2643         * include/experimental/iterator
2644         * include/experimental/list
2645         * include/experimental/map
2646         * include/experimental/memory
2647         * include/experimental/memory_resource
2648         * include/experimental/net
2649         * include/experimental/netfwd
2650         * include/experimental/numeric
2651         * include/experimental/propagate_const
2652         * include/experimental/ratio
2653         * include/experimental/regex
2654         * include/experimental/scope
2655         * include/experimental/set
2656         * include/experimental/socket
2657         * include/experimental/string
2658         * include/experimental/string_view
2659         * include/experimental/synchronized_value
2660         * include/experimental/system_error
2661         * include/experimental/timer
2662         * include/experimental/tuple
2663         * include/experimental/type_traits
2664         * include/experimental/unordered_map
2665         * include/experimental/unordered_set
2666         * include/experimental/vector
2667         * include/ext/algorithm
2668         * include/ext/cmath
2669         * include/ext/functional
2670         * include/ext/iterator
2671         * include/ext/memory
2672         * include/ext/numeric
2673         * include/ext/random
2674         * include/ext/rb_tree
2675         * include/ext/rope
2676         * include/parallel/algorithm
2677         * include/std/algorithm
2678         * include/std/any
2679         * include/std/array
2680         * include/std/atomic
2681         * include/std/barrier
2682         * include/std/bit
2683         * include/std/bitset
2684         * include/std/charconv
2685         * include/std/chrono
2686         * include/std/codecvt
2687         * include/std/complex
2688         * include/std/concepts
2689         * include/std/condition_variable
2690         * include/std/coroutine
2691         * include/std/deque
2692         * include/std/execution
2693         * include/std/expected
2694         * include/std/filesystem
2695         * include/std/format
2696         * include/std/forward_list
2697         * include/std/fstream
2698         * include/std/functional
2699         * include/std/future
2700         * include/std/generator
2701         * include/std/iomanip
2702         * include/std/ios
2703         * include/std/iosfwd
2704         * include/std/iostream
2705         * include/std/istream
2706         * include/std/iterator
2707         * include/std/latch
2708         * include/std/limits
2709         * include/std/list
2710         * include/std/locale
2711         * include/std/map
2712         * include/std/memory
2713         * include/std/memory_resource
2714         * include/std/mutex
2715         * include/std/numbers
2716         * include/std/numeric
2717         * include/std/optional
2718         * include/std/ostream
2719         * include/std/print
2720         * include/std/queue
2721         * include/std/random
2722         * include/std/ranges
2723         * include/std/ratio
2724         * include/std/regex
2725         * include/std/scoped_allocator
2726         * include/std/semaphore
2727         * include/std/set
2728         * include/std/shared_mutex
2729         * include/std/span
2730         * include/std/spanstream
2731         * include/std/sstream
2732         * include/std/stack
2733         * include/std/stacktrace
2734         * include/std/stdexcept
2735         * include/std/streambuf
2736         * include/std/string
2737         * include/std/string_view
2738         * include/std/syncstream
2739         * include/std/system_error
2740         * include/std/text_encoding
2741         * include/std/thread
2742         * include/std/tuple
2743         * include/std/type_traits
2744         * include/std/typeindex
2745         * include/std/unordered_map
2746         * include/std/unordered_set
2747         * include/std/utility
2748         * include/std/valarray
2749         * include/std/variant
2750         * include/std/vector
2751         * include/std/version
2752         * include/tr1/array
2753         * include/tr1/cfenv
2754         * include/tr1/cinttypes
2755         * include/tr1/cmath
2756         * include/tr1/complex
2757         * include/tr1/cstdbool
2758         * include/tr1/cstdint
2759         * include/tr1/cstdio
2760         * include/tr1/cstdlib
2761         * include/tr1/cwchar
2762         * include/tr1/cwctype
2763         * include/tr1/functional
2764         * include/tr1/memory
2765         * include/tr1/random
2766         * include/tr1/regex
2767         * include/tr1/tuple
2768         * include/tr1/type_traits
2769         * include/tr1/unordered_map
2770         * include/tr1/unordered_set
2771         * include/tr1/utility
2772         * include/tr2/bool_set
2773         * include/tr2/dynamic_bitset
2774         * include/tr2/type_traits
2775         * libsupc++/atomic_lockfree_defines.h
2776         * libsupc++/compare
2777         * libsupc++/cxxabi.h
2778         * libsupc++/cxxabi_forced.h
2779         * libsupc++/cxxabi_init_exception.h
2780         * libsupc++/exception
2781         * libsupc++/initializer_list
2782         * libsupc++/new
2783         * libsupc++/typeinfo: Likewise.
2784         * testsuite/20_util/ratio/operations/ops_overflow_neg.cc
2785         * testsuite/23_containers/array/tuple_interface/get_neg.cc
2786         * testsuite/23_containers/vector/cons/destructible_debug_neg.cc
2787         * testsuite/24_iterators/operations/prev_neg.cc
2788         * testsuite/ext/type_traits/add_unsigned_floating_neg.cc
2789         * testsuite/ext/type_traits/add_unsigned_integer_neg.cc
2790         * testsuite/ext/type_traits/remove_unsigned_floating_neg.cc
2791         * testsuite/ext/type_traits/remove_unsigned_integer_neg.cc: Adjust
2792         line numbers.
2793
2794 2024-09-25  Jason Merrill  <jason@redhat.com>
2795
2796         * include/parallel/base.h: Suppress -Wdeprecated-declarations.
2797         * include/parallel/multiseq_selection.h: Likewise.
2798
2799 2024-09-24  Nathaniel Shead  <nathanieloshead@gmail.com>
2800
2801         * include/std/format: Remove unnecessary 'static'.
2802
2803 2024-09-23  Jason Merrill  <jason@redhat.com>
2804
2805         * include/bits/c++config: Don't try to disable -Wc++??-extensions
2806         when compiling as C.
2807
2808 2024-09-23  Jason Merrill  <jason@redhat.com>
2809
2810         * libsupc++/new: Add _GLIBCXX_TXN_SAFE.
2811
2812 2024-09-22  Jonathan Wakely  <jwakely@redhat.com>
2813
2814         * include/std/format (__format::__is_formattable_integer): New
2815         variable template and specializations.
2816         (template<integral, __char> struct formatter): Replace
2817         constraints on first arg with __is_formattable_integer.
2818         * testsuite/std/format/formatter/requirements.cc: Check that
2819         std::formatter specializations for char8_t and const int are
2820         disabled.
2821
2822 2024-09-22  Jonathan Wakely  <jwakely@redhat.com>
2823
2824         PR libstdc++/116754
2825         * include/bits/ranges_algobase.h (__copy_or_move): Fix order of
2826         arguments to __memcpyable.
2827
2828 2024-09-22  Jonathan Wakely  <jwakely@redhat.com>
2829
2830         PR libstdc++/116755
2831         * include/bits/chrono_io.h (formatter<duration<R,P>>::format):
2832         Cast negative integral durations to unsigned rep.
2833         * testsuite/20_util/duration/io.cc: Test the most negative
2834         integer durations.
2835
2836 2024-09-22  Jonathan Wakely  <jwakely@redhat.com>
2837
2838         * include/bits/stl_vector.h (operator<=>): Use constexpr
2839         instead of _GLIBCXX20_CONSTEXPR macro.
2840
2841 2024-09-22  Jonathan Wakely  <jwakely@redhat.com>
2842
2843         * libsupc++/exception_ptr.h (__exception_ptr::_M_safe_bool_dummy):
2844         Remove __attribute__((const)) from function returning void.
2845
2846 2024-09-22  Jonathan Wakely  <jwakely@redhat.com>
2847
2848         * src/c++11/cxx11-ios_failure.cc (__iosfail_type_info): Unhide
2849         the three-arg overload of __do_upcast.
2850
2851 2024-09-22  Jonathan Wakely  <jwakely@redhat.com>
2852
2853         * include/bits/version.def: Sort C++26 entries alphabetically.
2854         * include/bits/version.h: Regenerate.
2855
2856 2024-09-22  Jonathan Wakely  <jwakely@redhat.com>
2857
2858         * include/bits/iterator_concepts.h: Add projected_value_t.
2859         * include/bits/algorithmfwd.h: Add the default template
2860         parameter to the relevant forward declarations.
2861         * include/pstl/glue_algorithm_defs.h: Likewise.
2862         * include/bits/ranges_algo.h: Add the default template
2863         parameter to range-based algorithms.
2864         * include/bits/ranges_algobase.h: Likewise.
2865         * include/bits/ranges_util.h: Likewise.
2866         * include/bits/ranges_base.h: Add helper macros.
2867         * include/bits/stl_iterator_base_types.h: Add helper macro.
2868         * include/bits/version.def: Add the new feature-testing macro.
2869         * include/bits/version.h: Regenerate.
2870         * include/std/algorithm: Pull the feature-testing macro.
2871         * include/std/ranges: Likewise.
2872         * include/std/deque: Pull the feature-testing macro, add
2873         the default for std::erase.
2874         * include/std/forward_list: Likewise.
2875         * include/std/list: Likewise.
2876         * include/std/string: Likewise.
2877         * include/std/vector: Likewise.
2878         * testsuite/23_containers/default_template_value.cc: New test.
2879         * testsuite/25_algorithms/default_template_value.cc: New test.
2880
2881 2024-09-21  Jason Merrill  <jason@redhat.com>
2882
2883         * include/c_compatibility/ctype.h
2884         * include/c_compatibility/errno.h
2885         * include/c_compatibility/float.h
2886         * include/c_compatibility/iso646.h
2887         * include/c_compatibility/limits.h
2888         * include/c_compatibility/locale.h
2889         * include/c_compatibility/setjmp.h
2890         * include/c_compatibility/signal.h
2891         * include/c_compatibility/stdarg.h
2892         * include/c_compatibility/stdbool.h
2893         * include/c_compatibility/stddef.h
2894         * include/c_compatibility/stdio.h
2895         * include/c_compatibility/string.h
2896         * include/c_compatibility/tgmath.h
2897         * include/c_compatibility/time.h
2898         * include/c_compatibility/uchar.h
2899         * include/c_compatibility/wchar.h
2900         * include/c_compatibility/wctype.h
2901         * include/c_global/ccomplex
2902         * include/c_global/cctype
2903         * include/c_global/cerrno
2904         * include/c_global/cfloat
2905         * include/c_global/climits
2906         * include/c_global/clocale
2907         * include/c_global/cmath
2908         * include/c_global/csetjmp
2909         * include/c_global/csignal
2910         * include/c_global/cstdalign
2911         * include/c_global/cstdarg
2912         * include/c_global/cstdbool
2913         * include/c_global/cstdio
2914         * include/c_global/cstdlib
2915         * include/c_global/cstring
2916         * include/c_global/ctgmath
2917         * include/c_global/ctime
2918         * include/c_global/cwchar
2919         * include/c_global/cwctype: Move header guard before #includes.
2920
2921 2024-09-20  Jonathan Wakely  <jwakely@redhat.com>
2922
2923         PR libstdc++/116529
2924         * include/bits/unique_ptr.h (unique_ptr(auto_ptr<U>&&)):
2925         Use pointer instead of T*.
2926         * testsuite/20_util/unique_ptr/creation/116529.cc: New test.
2927
2928 2024-09-20  Jonathan Wakely  <jwakely@redhat.com>
2929
2930         PR libstdc++/116777
2931         * doc/xml/manual/using.xml: Document features that are not
2932         supported for the gcc4-compatible ABI.
2933         * doc/html/manual/using_dual_abi.html: Regenerate.
2934
2935 2024-09-19  Jason Merrill  <jason@redhat.com>
2936
2937         * include/bits/algorithmfwd.h:
2938         * include/bits/allocator.h:
2939         * include/bits/codecvt.h:
2940         * include/bits/concept_check.h:
2941         * include/bits/cpp_type_traits.h:
2942         * include/bits/hashtable.h:
2943         * include/bits/iterator_concepts.h:
2944         * include/bits/ostream_insert.h:
2945         * include/bits/ranges_base.h:
2946         * include/bits/regex_automaton.h:
2947         * include/bits/std_abs.h:
2948         * include/bits/stl_algo.h:
2949         * include/c_compatibility/fenv.h:
2950         * include/c_compatibility/inttypes.h:
2951         * include/c_compatibility/stdint.h:
2952         * include/ext/concurrence.h:
2953         * include/ext/type_traits.h:
2954         * testsuite/ext/type_traits/add_unsigned_floating_neg.cc:
2955         * testsuite/ext/type_traits/add_unsigned_integer_neg.cc:
2956         * testsuite/ext/type_traits/remove_unsigned_floating_neg.cc:
2957         * testsuite/ext/type_traits/remove_unsigned_integer_neg.cc:
2958         * include/bits/basic_ios.tcc:
2959         * include/bits/basic_string.tcc:
2960         * include/bits/fstream.tcc:
2961         * include/bits/istream.tcc:
2962         * include/bits/locale_classes.tcc:
2963         * include/bits/locale_facets.tcc:
2964         * include/bits/ostream.tcc:
2965         * include/bits/regex_compiler.tcc:
2966         * include/bits/sstream.tcc:
2967         * include/bits/streambuf.tcc:
2968         * configure: Regenerate.
2969         * include/bits/c++config:
2970         * include/c/cassert:
2971         * include/c/cctype:
2972         * include/c/cerrno:
2973         * include/c/cfloat:
2974         * include/c/climits:
2975         * include/c/clocale:
2976         * include/c/cmath:
2977         * include/c/csetjmp:
2978         * include/c/csignal:
2979         * include/c/cstdarg:
2980         * include/c/cstddef:
2981         * include/c/cstdio:
2982         * include/c/cstdlib:
2983         * include/c/cstring:
2984         * include/c/ctime:
2985         * include/c/cwchar:
2986         * include/c/cwctype:
2987         * include/c_global/climits:
2988         * include/c_global/cmath:
2989         * include/c_global/cstddef:
2990         * include/c_global/cstdlib:
2991         * include/decimal/decimal:
2992         * include/ext/rope:
2993         * include/std/any:
2994         * include/std/charconv:
2995         * include/std/complex:
2996         * include/std/coroutine:
2997         * include/std/format:
2998         * include/std/iomanip:
2999         * include/std/limits:
3000         * include/std/numbers:
3001         * include/tr1/functional:
3002         * include/tr1/tuple:
3003         * include/tr1/type_traits:
3004         * libsupc++/compare:
3005         * libsupc++/new: Add #pragma GCC diagnostic to suppress
3006         undesired warnings.
3007         * acinclude.m4: Change -Wabi version from 2 to 19.
3008
3009 2024-09-18  Jason Merrill  <jason@redhat.com>
3010
3011         * include/bits/basic_ios.h: Add braces.
3012
3013 2024-09-16  Jonathan Wakely  <jwakely@redhat.com>
3014
3015         * .editorconfig: New file.
3016         * include/std/.editorconfig: New file.
3017
3018 2024-09-16  Gerald Pfeifer  <gerald@pfeifer.com>
3019
3020         * doc/xml/manual/intro.xml: Update link to installation docs.
3021         * doc/html/manual/make.html: Regenerate.
3022
3023 2024-09-15  Jonathan Wakely  <jwakely@redhat.com>
3024
3025         * include/std/span (span::__iter_tag): Declare nested type.
3026         (span::iterator): Use __iter_tag as second template argument.
3027         * include/std/stacktrace (basic_stacktrace::iterator): Use _Impl
3028         as second template argument.
3029
3030 2024-09-15  Jonathan Wakely  <jwakely@redhat.com>
3031
3032         * doc/xml/manual/using.xml (_GLIBCXX_NO_FREESTANDING_CHRONO):
3033         Document macro.
3034         * doc/html/*: Regenerate.
3035         * include/bits/chrono.h [_GLIBCXX_NO_FREESTANDING_CHRONO]:
3036         Only include <bits/require_hosted.h> when this macro is defined.
3037         [_GLIBCXX_HOSTED]: Only define clocks for hosted.
3038         * include/bits/version.def (chrono_udls): Remove hosted=yes.
3039         * include/bits/version.h: Regenerate.
3040         * include/std/chrono [_GLIBCXX_HOSTED]: Only define clocks and
3041         time zone utilities for hosted.
3042         * testsuite/std/time/freestanding.cc: New test.
3043
3044 2024-09-15  Jonathan Wakely  <jwakely@redhat.com>
3045
3046         * include/bits/locale_classes.h (__is_facet): New helper.
3047         * include/bits/locale_classes.tcc (locale::combine): Check that
3048         _Facet type is valid.
3049
3050 2024-09-15  Jonathan Wakely  <jwakely@redhat.com>
3051
3052         PR libstdc++/110512
3053         * include/pstl/execution_impl.h (__are_random_access_iterators):
3054         Recognize C++20 random access iterators, and use more efficient
3055         implementations.
3056         * testsuite/25_algorithms/pstl/110512.cc: New test.
3057
3058 2024-09-14  Jonathan Wakely  <jwakely@redhat.com>
3059
3060         * include/std/format (__formatter_fp::_M_localize): Add comments
3061         and micro-optimize string copy.
3062
3063 2024-09-14  Jonathan Wakely  <jwakely@redhat.com>
3064
3065         * include/bits/semaphore_base.h (__platform_semaphore): Refactor
3066         loops to all use similar forms.
3067         (__platform_semaphore::_M_try_acquire_until): Use chrono::ceil
3068         to explicitly convert to __clock_t::time_point.
3069         * testsuite/30_threads/semaphore/try_acquire_for.cc: Check that
3070         using a very high resolution timeout compiles.
3071         * testsuite/30_threads/semaphore/platform_try_acquire_for.cc:
3072         New test.
3073
3074 2024-09-13  Giuseppe D'Angelo  <giuseppe.dangelo@kdab.com>
3075
3076         PR libstdc++/108846
3077         PR libstdc++/116471
3078         * include/bits/ranges_algobase.h (__assign_one): New helper
3079         function.
3080         (__copy_or_move): Remove a spurious static_assert; use
3081         __assign_one for memcpyable ranges of length 1.
3082         (__copy_or_move_backward): Likewise.
3083         * testsuite/25_algorithms/copy/108846.cc: Extend to range-based
3084         algorithms, and cover both memcpyable and non-memcpyable
3085         cases.
3086         * testsuite/25_algorithms/copy_backward/108846.cc: Likewise.
3087         * testsuite/25_algorithms/copy_n/108846.cc: Likewise.
3088         * testsuite/25_algorithms/move/108846.cc: Likewise.
3089         * testsuite/25_algorithms/move_backward/108846.cc: Likewise.
3090
3091 2024-09-12  Jonathan Wakely  <jwakely@redhat.com>
3092
3093         * include/std/optional (__is_bool): Remove.
3094
3095 2024-09-12  Jonathan Wakely  <jwakely@redhat.com>
3096
3097         * libsupc++/new (launder): Add static_assert and remove deleted
3098         overloads.
3099         * testsuite/18_support/launder/requirements_neg.cc: Adjust
3100         expected diagnostics.
3101
3102 2024-09-11  Alex Coplan  <alex.coplan@arm.com>
3103
3104         PR libstdc++/116140
3105         * include/bits/stl_algobase.h (std::__find_if): Add #pragma to
3106         request GCC to unroll the loop.
3107
3108 2024-09-10  Jonathan Wakely  <jwakely@redhat.com>
3109
3110         PR libstdc++/116159
3111         * include/std/iostream (ios_base_library_init): Only define for
3112         ELF targets.
3113         * src/c++98/ios_init.cc (ios_base_library_init): Likewise.
3114
3115 2024-09-10  Jonathan Wakely  <jwakely@redhat.com>
3116
3117         PR libstdc++/116641
3118         * include/bits/basic_string.h (operator=(basic_string&&)): Call
3119         _M_assign instead of assign.
3120         * testsuite/21_strings/basic_string/allocator/116641.cc: New
3121         test.
3122
3123 2024-09-10  Jonathan Wakely  <jwakely@redhat.com>
3124
3125         * testsuite/18_support/new_nothrow.cc (THROW_BAD_ALLOC): Define
3126         macro to add exception specifications for C++98 mode.
3127         (NOEXCEPT): Expand to throw() for C++98 mode.
3128         * testsuite/26_numerics/headers/numeric/synopsis.cc (gcd, lcm):
3129         Add noexcept.
3130
3131 2024-09-06  Jonathan Wakely  <jwakely@redhat.com>
3132
3133         * include/bits/chrono_io.h (from_stream): Fix conversions in
3134         overloads for gps_time and tai_time.
3135         * testsuite/std/time/clock/file/io.cc: Test round tripping using
3136         chrono::parse. Add additional std::format tests.
3137         * testsuite/std/time/clock/gps/io.cc: Likewise.
3138         * testsuite/std/time/clock/local/io.cc: Likewise.
3139         * testsuite/std/time/clock/tai/io.cc: Likewise.
3140         * testsuite/std/time/clock/utc/io.cc: Likewise.
3141
3142 2024-09-06  Jason Merrill  <jason@redhat.com>
3143
3144         * include/bits/regex_constants.h: Add __ to attribute.
3145
3146 2024-09-06  Jason Merrill  <jason@redhat.com>
3147
3148         * include/bits/c++config: Avoid redefining __GLIBCXX__.
3149
3150 2024-09-06  Jason Merrill  <jason@redhat.com>
3151
3152         PR c++/46457
3153         PR c++/81665
3154         * include/bits/regex_constants.h: Use flag_enum.
3155
3156 2024-09-06  Jason Merrill  <jason@redhat.com>
3157
3158         * include/bits/ios_base.h (_GLIBCXX_NOREPLACE_UNUSED): New.
3159         (_Ios_Openmode): Add unused attributes.
3160         * testsuite/27_io/ios_base/types/openmode/case_label.cc: Handle
3161         noreplace.
3162
3163 2024-09-03  Jonathan Wakely  <jwakely@redhat.com>
3164
3165         * src/c++17/fs_ops.cc (auto_win_file_handle): Add error_code&
3166         member and set it if CreateFileW or GetFileInformationByHandle
3167         fails.
3168         (fs::equiv_files) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Simplify
3169         control flow.
3170         (fs::hard_link_count) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Clear ec
3171         on success.
3172         * testsuite/27_io/filesystem/operations/hard_link_count.cc:
3173         Check error handling.
3174
3175 2024-09-03  Jonathan Wakely  <jwakely@redhat.com>
3176
3177         PR libstdc++/116549
3178         * include/bits/stl_iterator.h (disable_sized_sentinel_for):
3179         Define specialization for two move_iterator types, as per LWG
3180         3736.
3181         * testsuite/24_iterators/move_iterator/lwg3736.cc: New test.
3182
3183 2024-09-03  Jonathan Wakely  <jwakely@redhat.com>
3184
3185         * include/experimental/any (experimental::any::_Storage): Use
3186         array of unsigned char instead of deprecated
3187         std::aligned_storage.
3188         * include/std/any (any::_Storage): Likewise.
3189         * testsuite/20_util/any/layout.cc: New test.
3190
3191 2024-09-03  Dhruv Chawla  <dhruvc@nvidia.com>
3192
3193         * include/std/deque: Define macro
3194         __glibcxx_want_allocator_traits_is_always_equal.
3195         * include/std/forward_list: Likewise.
3196         * include/std/list: Likewise.
3197         * include/std/map: Likewise.
3198         * include/std/scoped_allocator: Likewise.
3199         * include/std/set: Likewise.
3200         * include/std/string: Likewise.
3201         * include/std/unordered_map: Likewise.
3202         * include/std/unordered_set: Likewise.
3203         * include/std/vector: Likewise.
3204         * testsuite/20_util/headers/memory/version.cc: New test.
3205         * testsuite/20_util/scoped_allocator/version.cc: Likewise.
3206         * testsuite/21_strings/headers/string/version.cc: Likewise.
3207         * testsuite/23_containers/deque/version.cc: Likewise.
3208         * testsuite/23_containers/forward_list/version.cc: Likewise.
3209         * testsuite/23_containers/list/version.cc: Likewise.
3210         * testsuite/23_containers/map/version.cc: Likewise.
3211         * testsuite/23_containers/set/version.cc: Likewise.
3212         * testsuite/23_containers/unordered_map/version.cc: Likewise.
3213         * testsuite/23_containers/unordered_set/version.cc: Likewise.
3214         * testsuite/23_containers/vector/version.cc: Likewise.
3215
3216 2024-09-02  Alexandre Oliva  <oliva@adacore.com>
3217
3218         * testsuite/30_threads/future/members/poll.cc: Factor out
3219         calibration, and run it unconditionally.  Lower its
3220         strictness.  Bump wait_until_*'s slowness factor.
3221
3222 2024-09-02  Alexandre Oliva  <oliva@adacore.com>
3223
3224         PR libstdc++/91486
3225         * testsuite/30_threads/async/async.cc
3226         (test_pr91486_wait_for): Mark status as unused.
3227         (test_pr91486_wait_until): Likewise.  Initialize epoch later.
3228
3229 2024-09-02  Andreas Schwab  <schwab@suse.de>
3230
3231         PR libstdc++/116513
3232         * libsupc++/compare (_S_fp_bits) [__fmt == _M68k_80bit]: Shift
3233         padding out of exponent word.
3234
3235 2024-08-28  Jonathan Wakely  <jwakely@redhat.com>
3236
3237         * configure.ac: Fix check for O_NONBLOCK.
3238         * config.h.in: Regenerate.
3239         * configure: Regenerate.
3240
3241 2024-08-28  Jonathan Wakely  <jwakely@redhat.com>
3242
3243         * include/experimental/io_context: Remove name of unused
3244         parameter.
3245         * include/experimental/socket: Add [[maybe_unused]] attribute.
3246
3247 2024-08-28  Jonathan Wakely  <jwakely@redhat.com>
3248
3249         * include/std/format (format_parse_context::check_dynamic_spec):
3250         Add [[maybe_unused]] attribute and comment.
3251
3252 2024-08-28  Jonathan Wakely  <jwakely@redhat.com>
3253
3254         * include/std/ranges (to): Remove unused typedef.
3255
3256 2024-08-28  Kim Gräsman  <kim.grasman@gmail.com>
3257
3258         * config/cpu/aarch64/opt/ext/opt_random.h: Improve doxygen file
3259         docs.
3260         * config/cpu/i486/opt/ext/opt_random.h: Likewise.
3261
3262 2024-08-28  Kim Gräsman  <kim.grasman@gmail.com>
3263
3264         * include/bits/cpp_type_traits.h: Improve doxygen file docs.
3265
3266 2024-08-28  Jason Merrill  <jason@redhat.com>
3267
3268         * include/std/istream: Add cast to avoid -Wsign-compare.
3269         * include/std/stacktrace: Likewise.
3270
3271 2024-08-28  Jason Merrill  <jason@redhat.com>
3272
3273         * testsuite/20_util/default_delete/void_neg.cc: Fix regexp quoting.
3274
3275 2024-08-28  Jason Merrill  <jason@redhat.com>
3276
3277         * include/std/coroutine (coroutine_handle): Use nullptr instead of
3278         0 as initializer for _M_fr_ptr.
3279
3280 2024-08-28  Jason Merrill  <jason@redhat.com>
3281
3282         * include/bits/stl_uninitialized.h (__uninitialized_move_copy): Add
3283         missing return.
3284
3285 2024-08-28  Jason Merrill  <jason@redhat.com>
3286
3287         * include/decimal/decimal.h (_DEFINE_DECIMAL_BINARY_OP_WITH_INT):
3288         Remove redundant semicolons.
3289
3290 2024-08-27  Jonathan Wakely  <jwakely@redhat.com>
3291
3292         PR libstdc++/115098
3293         * python/libstdcxx/v6/printers.py (StdBitReferencePrinter): Add
3294         comment.
3295         * testsuite/libstdc++-prettyprinters/simple.cc: Do not default
3296         construct std::vector<bool>::reference.
3297         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
3298
3299 2024-08-23  Jonathan Wakely  <jwakely@redhat.com>
3300
3301         * doc/xml/manual/documentation_hacking.xml: Update minimum
3302         Doxygen version.
3303         * doc/html/*: Regenerate.
3304
3305 2024-08-23  Jonathan Wakely  <jwakely@redhat.com>
3306
3307         * include/std/tuple: Do not include implementation details in
3308         Doxygen documentation.
3309
3310 2024-08-23  Jonathan Wakely  <jwakely@redhat.com>
3311
3312         * include/bits/alloc_traits.h: Improve doxygen docs for
3313         allocator_traits specializations.
3314         * include/bits/memory_resource.h: Likewise.
3315
3316 2024-08-23  Jonathan Wakely  <jwakely@redhat.com>
3317
3318         * include/std/optional (__is_derived_from_optional): New
3319         concept.
3320         (operator<=>): Use __is_derived_from_optional.
3321         * testsuite/20_util/optional/relops/lwg3746.cc: New test.
3322
3323 2024-08-23  Jonathan Wakely  <jwakely@redhat.com>
3324
3325         * include/bits/locale_classes.tcc (__try_use_facet): Also avoid
3326         dynamic_cast for const-qualified facet types.
3327
3328 2024-08-23  Jonathan Wakely  <jwakely@redhat.com>
3329
3330         PR libstdc++/108619
3331         * include/bits/alloc_traits.h (__allocator_traits_base): Add
3332         variable templates for detecting which allocator operations are
3333         supported.
3334         (allocator_traits): Use 'if constexpr' instead of dispatching to
3335         overloads constrained with enable_if.
3336         (allocator_traits<allocator<T>>::construct): Use Construct if
3337         construct_at is not supported. Use
3338         __is_nothrow_new_constructible for noexcept-specifier.
3339         (allocator_traits<allocator<void>>::construct): Use
3340         __is_nothrow_new_constructible for noexcept-specifier.
3341         * include/bits/new_allocator.h (construct): Likewise.
3342         * include/ext/malloc_allocator.h (construct): Likewise.
3343         * include/std/type_traits (__is_nothrow_new_constructible): New
3344         variable template.
3345         * testsuite/20_util/allocator/89510.cc: Adjust expected results.
3346         * testsuite/ext/malloc_allocator/89510.cc: Likewise.
3347         * testsuite/ext/new_allocator/89510.cc: Likewise.
3348         * testsuite/20_util/allocator_traits/members/108619.cc: New test.
3349
3350 2024-08-23  Jonathan Wakely  <jwakely@redhat.com>
3351
3352         * include/bits/chrono_io.h (__formatter_chrono::_M_C_y_Y):
3353         Ignore modifiers unless the formatting locale is not the C
3354         locale.
3355         (__formatter_chrono::_M_d_e): Likewise.
3356         (__formatter_chrono::_M_H_I): Likewise.
3357         (__formatter_chrono::_M_m): Likewise.
3358         (__formatter_chrono::_M_M): Likewise.
3359         (__formatter_chrono::_M_S): Likewise.
3360         (__formatter_chrono::_M_u_w): Likewise.
3361         (__formatter_chrono::_M_U_V_W): Likewise.
3362
3363 2024-08-23  Jonathan Wakely  <jwakely@redhat.com>
3364
3365         PR libstdc++/115939
3366         * include/bits/hashtable_policy.h (_Node_iterator): Add
3367         operator== and operator!=.
3368         (_Node_const_iterator): Likewise.
3369         * testsuite/23_containers/unordered_map/115939.cc: New test.
3370
3371 2024-08-23  Giovanni Bajo  <rasky@develer.com>
3372             Jonathan Wakely  <jwakely@redhat.com>
3373
3374         PR libstdc++/88935
3375         * include/bits/stl_algo.h (random_shuffle) [RAND_MAX < INT_MAX]:
3376         Use xorshift instead of rand().
3377         * testsuite/25_algorithms/random_shuffle/88935.cc: New test.
3378
3379 2024-08-23  Jonathan Wakely  <jwakely@redhat.com>
3380
3381         PR c++/116369
3382         * include/debug/safe_base.h (_Safe_sequence_base::_M_iterators):
3383         Add mutable specifier.
3384         (_Safe_sequence_base::_M_const_iterators): Likewise.
3385
3386 2024-08-23  Jonathan Wakely  <jwakely@redhat.com>
3387
3388         * src/c++11/debug.cc: Replace throw() with noexcept.
3389
3390 2024-08-23  Jonathan Wakely  <jwakely@redhat.com>
3391
3392         * include/std/variant [C++20] (_Uninitialized): Always use the
3393         primary template.
3394         [C++20] (__get_n): Access the _M_storage member directly.
3395
3396 2024-08-23  Jonathan Wakely  <jwakely@redhat.com>
3397
3398         PR libstdc++/115098
3399         * include/bits/stl_bvector.h (_Bit_reference): Make default
3400         constructor private. Declare vector and bit iterators as
3401         friends.
3402         * include/std/bitset (bitset::reference): Make constructor and
3403         data members private.
3404         * testsuite/20_util/bitset/115098.cc: New test.
3405         * testsuite/23_containers/vector/bool/115098.cc: New test.
3406
3407 2024-08-22  Patrick Palka  <ppalka@redhat.com>
3408
3409         * testsuite/25_algorithms/contains/1.cc: Verify value of
3410         __cpp_lib_ranges_contains.
3411         * testsuite/25_algorithms/find_last/1.cc: Verify value of
3412         __cpp_lib_ranges_find_last.
3413         * testsuite/26_numerics/iota/2.cc: Verify value of
3414         __cpp_lib_ranges_iota.
3415
3416 2024-08-22  Patrick Palka  <ppalka@redhat.com>
3417
3418         * include/bits/iterator_concepts.h (__detail::__projected): Define
3419         an optimized partial specialization for when the projection is
3420         std::identity.
3421         * testsuite/24_iterators/indirect_callable/projected.cc: Verify the
3422         optimization.
3423
3424 2024-08-22  Patrick Palka  <ppalka@redhat.com>
3425
3426         * include/bits/iterator_concepts.h (indirectly_unary_invocable):
3427         Relax as per P2997R1.
3428         (indirectly_regular_unary_invocable): Likewise.
3429         (indirect_unary_predicate): Likewise.
3430         (indirect_binary_predicate): Likewise.
3431         (indirect_equivalence_relation): Likewise.
3432         (indirect_strict_weak_order): Likewise.
3433         * include/bits/version.def (ranges): Update value for C++26.
3434         * include/bits/version.h: Regenerate.
3435         * testsuite/24_iterators/indirect_callable/p2997r1.cc: New test.
3436         * testsuite/std/ranges/version_c++23.cc: Remove.
3437         * testsuite/std/ranges/headers/ranges/synopsis.cc: Refine the
3438         __cpp_lib_ranges checks.
3439
3440 2024-08-22  Patrick Palka  <ppalka@redhat.com>
3441
3442         * include/bits/iterator_concepts.h (__detail::__indirect_value):
3443         Define.
3444         (__indirect_value_t): Define as per P2609R3.
3445         (iter_common_reference_t): Adjust as per P2609R3.
3446         (indirectly_unary_invocable): Likewise.
3447         (indirectly_regular_unary_invocable): Likewise.
3448         (indirect_unary_predicate): Likewise.
3449         (indirect_binary_predicate): Likewise.
3450         (indirect_equivalence_relation): Likewise.
3451         (indirect_strict_weak_order): Likewise.
3452         (__detail::__projected::__type): Define member aliases
3453         __projected_Iter and __projected_Proj providing the
3454         template arguments of the current specialization.
3455         * include/bits/version.def (ranges): Update value.
3456         * include/bits/version.h: Regenerate.
3457         * testsuite/24_iterators/indirect_callable/p2609r3.cc: New test.
3458         * testsuite/std/ranges/version_c++23.cc: Update expected value
3459         of __cpp_lib_ranges macro.
3460
3461 2024-08-21  Jonathan Wakely  <jwakely@redhat.com>
3462
3463         PR tree-optimization/102958
3464         * include/bits/char_traits.h (char_traits<char8_t>::length): Use
3465         strlen.
3466
3467 2024-08-21  Jonathan Wakely  <jwakely@redhat.com>
3468
3469         PR libstdc++/114862
3470         * src/c++98/locale_facets.cc (__num_base::_S_format_float):
3471         Check uppercase flag for fixed format.
3472         * testsuite/22_locale/num_put/put/char/lwg4084.cc: New test.
3473
3474 2024-08-21  Jonathan Wakely  <jwakely@redhat.com>
3475
3476         PR libstdc++/116381
3477         * include/std/variant (variant): Fix conditions for
3478         static_assert to match the spec.
3479         * testsuite/20_util/variant/types_neg.cc: New test.
3480
3481 2024-08-20  Jonathan Wakely  <jwakely@redhat.com>
3482
3483         * include/std/optional: Remove redundant redeclaration.
3484
3485 2024-08-20  Jonathan Wakely  <jwakely@redhat.com>
3486
3487         * include/std/text_encoding: Fix indentation.
3488
3489 2024-08-20  Jonathan Wakely  <jwakely@redhat.com>
3490
3491         PR libstdc++/115744
3492         * testsuite/18_support/headers/new/synopsis.cc [C++26]: Add
3493         constexpr to placement operator new and operator new[].
3494
3495 2024-08-18  Gerald Pfeifer  <gerald@pfeifer.com>
3496
3497         * doc/xml/manual/prerequisites.xml: Remove note from the
3498         GCC 4.0.1 days.
3499         * doc/html/manual/setup.html: Regenerate.
3500
3501 2024-08-17  Gerald Pfeifer  <gerald@pfeifer.com>
3502
3503         * doc/xml/manual/abi.xml: Update reference to
3504         gcc.gnu.org/onlinedocs.
3505         * doc/xml/manual/concurrency_extensions.xml (interface): Ditto.
3506         * doc/xml/manual/extensions.xml: Ditto.
3507         * doc/xml/manual/parallel_mode.xml: Ditto.
3508         * doc/xml/manual/shared_ptr.xml: Ditto.
3509         * doc/xml/manual/using_exceptions.xml: Ditto. And change GNU GCC
3510         to GCC.
3511         * doc/html/manual/abi.html: Regenerate.
3512         * doc/html/manual/ext_concurrency_impl.html: Ditto.
3513         * doc/html/manual/ext_demangling.html: Ditto.
3514         * doc/html/manual/memory.html: Ditto.
3515         * doc/html/manual/parallel_mode_design.html: Ditto.
3516         * doc/html/manual/parallel_mode_using.html: Ditto.
3517         * doc/html/manual/using_exceptions.html: Ditto.
3518
3519 2024-08-17  Gerald Pfeifer  <gerald@pfeifer.com>
3520
3521         * doc/xml/manual/prerequisites.xml: Tweak two links to
3522         installation docs. Fix grammar.
3523         * doc/html/manual/setup.html: Regenerate.
3524
3525 2024-08-16  Hans-Peter Nilsson  <hp@axis.com>
3526
3527         PR libstdc++/116362
3528         * configure.ac: Check newlib configuration whether iconv is enabled.
3529         * configure: Regenerate.
3530
3531 2024-08-16  Hans-Peter Nilsson  <hp@axis.com>
3532
3533         * testsuite/lib/prune.exp (libstdc++-dg-prune): Prune
3534         uncapitalized "in function" warning from linker.
3535
3536 2024-08-08  Jakub Jelinek  <jakub@redhat.com>
3537
3538         PR c++/115744
3539         * libsupc++/new (__glibcxx_want_constexpr_new): Define before
3540         including bits/version.h.
3541         (_GLIBCXX_PLACEMENT_CONSTEXPR): Define.
3542         (operator new, operator new[]): Use it for placement new instead
3543         of inline.
3544         * include/bits/version.def (constexpr_new): New FTM.
3545         * include/bits/version.h: Regenerate.
3546
3547 2024-08-06  Jonathan Wakely  <jwakely@redhat.com>
3548
3549         PR libstdc++/116247
3550         * include/bits/fs_path.h: Use __UINTPTR_TYPE__ instead of
3551         uintptr_t.
3552         * include/bits/shared_ptr_atomic.h: Likewise.
3553         * include/ext/pointer.h: Include <stdint.h>.
3554
3555 2024-08-03  Patrick Palka  <ppalka@redhat.com>
3556
3557         * include/bits/move.h (__like_impl): New metafunction.
3558         (__like_t): Redefine in terms of __like_impl.
3559         (forward_like): Redefine in terms of __like_t.
3560         * testsuite/20_util/forward_like/2_neg.cc: Don't expect
3561         error outside the immediate context anymore.
3562
3563 2024-08-02  Jonathan Wakely  <jwakely@redhat.com>
3564
3565         * testsuite/libstdc++-prettyprinters/shared_ptr.cc: Include
3566         <cstdint>.
3567
3568 2024-08-01  Jonathan Wakely  <jwakely@redhat.com>
3569
3570         * include/bits/utility.h (__is_in_place_type): Remove.
3571         * include/std/variant (__is_in_place_tag): Remove.
3572
3573 2024-08-01  Jonathan Wakely  <jwakely@redhat.com>
3574
3575         * include/bits/align.h (align, assume_aligned): Use
3576         __UINTPTR_TYPE__ instead of uintptr_t. Do not include
3577         <stdint.h>.
3578         * include/bits/atomic_base.h (__atomic_ref): Likewise.
3579         * include/bits/atomic_wait.h (__waiter_pool_base::_S_for):
3580         Likewise.
3581         * include/std/atomic: Include <cstdint>.
3582
3583 2024-08-01  Jonathan Wakely  <jwakely@redhat.com>
3584
3585         * include/bits/atomic_base.h (__atomic_impl::compare_exchange_weak):
3586         Remove unused parameter.
3587         (__atomic_impl::compare_exchange_strong): Likewise.
3588
3589 2024-08-01  Jonathan Wakely  <jwakely@redhat.com>
3590
3591         PR libstdc++/113807
3592         * include/std/bitset (bitset::_M_is_equal()): Use memcmp to
3593         optimize operator==.
3594
3595 2024-08-01  Jonathan Wakely  <jwakely@redhat.com>
3596
3597         * testsuite/26_numerics/random/discrete_distribution/operators/values.cc:
3598         Use ARGS to limit number of iterations for simulators.
3599
3600 2024-08-01  Jonathan Wakely  <jwakely@redhat.com>
3601
3602         PR libstdc++/113841
3603         * include/bits/basic_string.h (basic_string::basic_string()):
3604         Constrain so that it's only present if the allocator is default
3605         constructible.
3606         * include/bits/cow_string.h (basic_string::basic_string()):
3607         Likewise.
3608         * testsuite/21_strings/basic_string/cons/113841.cc: New test.
3609
3610 2024-08-01  Jonathan Wakely  <jwakely@redhat.com>
3611
3612         PR libstdc++/99942
3613         * include/bits/cow_string.h (data()): Change to noexcept(false).
3614
3615 2024-08-01  Jonathan Wakely  <jwakely@redhat.com>
3616
3617         * testsuite/23_containers/map/operators/1_neg.cc (test01): Remove test variable
3618         and use 'no match' dg-error patter.
3619         * testsuite/23_containers/set/operators/1_neg.cc (test01): Likewise.
3620
3621 2024-07-31  François Dumont  <frs.dumont@gmail.com>
3622
3623         * testsuite/23_containers/map/operators/1_neg.cc (test01): Add test variable
3624         declaration.
3625         * testsuite/23_containers/set/operators/1_neg.cc (test01): Likewise.
3626
3627 2024-07-31  Jonathan Wakely  <jwakely@redhat.com>
3628
3629         * src/c++20/format.cc [!_GLIBCXX_HAS_GTHREADS] (mutex): Define
3630         dummy mutex type.
3631         * testsuite/std/time/format_localized.cc: Use loop variable
3632         instead of creating the same locale on every iteration.
3633
3634 2024-07-31  Sam James  <sam@gentoo.org>
3635
3636         * testsuite/28_regex/traits/char/translate.cc: Drop bogus 'dg_do run'.
3637
3638 2024-07-31  Jonathan Wakely  <jwakely@redhat.com>
3639
3640         * src/c++11/system_error.cc (strerror_string): Handle
3641         non-conforming NULL return from strerror.
3642
3643 2024-07-31  Jonathan Wakely  <jwakely@redhat.com>
3644
3645         * testsuite/lib/libstdc++.exp (check_v3_target_namedlocale):
3646         Only append "@euro" to ".ISO8859-15" locales for Glibc.
3647
3648 2024-07-31  Jonathan Wakely  <jwakely@redhat.com>
3649
3650         * include/bits/version.def (format): Update value for C++26.
3651         * include/bits/version.h: Regenerate.
3652         * include/std/format (runtime_format, wruntime_format): Check
3653         __cpp_lib_format instead of __cplusplus.
3654         * testsuite/std/format/functions/format.cc: Update expected
3655         value of macro for C++26 mode.
3656
3657 2024-07-31  Jonathan Wakely  <jwakely@redhat.com>
3658
3659         PR libstdc++/110356
3660         * include/bits/c++config (_GLIBCXX26_DEPRECATED): Define.
3661         (_GLIBCXX26_DEPRECATED_SUGGEST): Define.
3662         * include/bits/version.def (format): Update for C++26.
3663         * include/bits/version.h: Regenerate.
3664         * include/std/format (basic_format_arg::visit): New member
3665         functions.
3666         (visit_format_arg): Add deprecated attribute.
3667         * testsuite/std/format/arguments/args.cc: Expect deprecated
3668         warnings. Check member visit.
3669         * testsuite/std/format/functions/format.cc: Update expected
3670         value for __cpp_lib_format macro.
3671         * testsuite/std/format/parse_ctx.cc: Add dg-warning for
3672         deprecation.
3673
3674 2024-07-31  Jonathan Wakely  <jwakely@redhat.com>
3675
3676         PR libstdc++/110356
3677         * include/bits/version.def (variant): Update for C++26.
3678         * include/bits/version.h: Regenerate.
3679         * include/std/variant (variant::visit): New member functions.
3680         * testsuite/20_util/variant/visit.cc: Check second alternative.
3681         * testsuite/20_util/variant/visit_member.cc: New test.
3682
3683 2024-07-31  Jonathan Wakely  <jwakely@redhat.com>
3684
3685         PR libstdc++/115776
3686         * include/bits/version.def (format): Update for C++26.
3687         * include/bits/version.h: Regenerate.
3688         * include/std/format (basic_format_parse_context): Remove
3689         default argument from constructor and split into two
3690         constructors. Make the constructor taking size_t private for
3691         C++26 and later.
3692         (basic_format_parse_context::check_dynamic_spec): New member
3693         function template.
3694         (basic_format_parse_context::check_dynamic_spec_integral): New
3695         member function.
3696         (basic_format_parse_context::check_dynamic_spec_string):
3697         Likewise.
3698         (__format::_Spec::_S_parse_width_or_precision): Use
3699         check_dynamic_spec_integral.
3700         (__format::__to_arg_t_enum): New helper function.
3701         (basic_format_arg):  Declare __to_arg_t_enum as friend.
3702         (__format::_Scanner): Define and use a derived parse context
3703         type.
3704         (__format::_Checking_scanner): Make arg types available to parse
3705         context.
3706         * testsuite/std/format/functions/format.cc: Check for new values
3707         of __cpp_lib_format macro.
3708         * testsuite/std/format/parse_ctx.cc: Check all members of
3709         basic_format_parse_context.
3710         * testsuite/std/format/parse_ctx_neg.cc: New test.
3711         * testsuite/std/format/string.cc: Add more checks for dynamic
3712         width and precision args.
3713
3714 2024-07-31  Jonathan Wakely  <jwakely@redhat.com>
3715
3716         * include/bits/version.def (format): Update value for P2510R3.
3717         * include/bits/version.h: Regenerate.
3718         * include/std/format (_GLIBCXX_P2518R3): Remove misspelled macro
3719         and check __glibcxx_format instead.
3720         * testsuite/std/format/functions/format.cc: Check value of the
3721         __cpp_lib_format macro for formatting pointers support.
3722         * testsuite/std/format/parse_ctx.cc: Likewise.
3723
3724 2024-07-31  Jonathan Wakely  <jwakely@redhat.com>
3725
3726         PR libstdc++/109162
3727         * acinclude.m4 (libtool_VERSION): Update to 6:34:0.
3728         * config/abi/pre/gnu.ver: Disambiguate old patters. Add new
3729         GLIBCXX_3.4.34 symbol version and new exports.
3730         * configure: Regenerate.
3731         * include/bits/chrono_io.h (_ChronoSpec::_M_locale_specific):
3732         Add new accessor functions to use a reserved bit in _Spec.
3733         (__formatter_chrono::_M_parse): Use _M_locale_specific(true)
3734         when chrono-specs contains locale-dependent conversion
3735         specifiers.
3736         (__formatter_chrono::_M_format): Open iconv descriptor if
3737         conversion to UTF-8 will be needed.
3738         (__formatter_chrono::_M_write): New function to write a
3739         localized string with possible character conversion.
3740         (__formatter_chrono::_M_a_A, __formatter_chrono::_M_b_B)
3741         (__formatter_chrono::_M_p, __formatter_chrono::_M_r)
3742         (__formatter_chrono::_M_x, __formatter_chrono::_M_X)
3743         (__formatter_chrono::_M_locale_fmt): Use _M_write.
3744         * include/bits/version.def (format): Update value.
3745         * include/bits/version.h: Regenerate.
3746         * include/std/format (_GLIBCXX_P2518R3): Check feature test
3747         macro instead of __cplusplus.
3748         (basic_format_context): Declare __formatter_chrono as friend.
3749         * src/c++20/Makefile.am: Add new file.
3750         * src/c++20/Makefile.in: Regenerate.
3751         * src/c++20/format.cc: New file.
3752         * testsuite/std/time/format_localized.cc: New test.
3753         * testsuite/util/testsuite_abi.cc: Add new symbol version.
3754
3755 2024-07-30  Jonathan Wakely  <jwakely@redhat.com>
3756
3757         * include/bits/chrono_io.h (__local_time_fmt_for): New alias
3758         template.
3759         (formatter<zoned_time<D, P>>): Use __local_time_fmt_for.
3760         * testsuite/std/time/zoned_time/io.cc: Check zoned_time<minutes>
3761         can be formatted.
3762
3763 2024-07-30  Jonathan Wakely  <jwakely@redhat.com>
3764
3765         * include/bits/chrono_io.h (__local_fmt_t): Remove unused
3766         declaration.
3767         (__formatter_chrono::_M_format_to_ostream): Add explicit
3768         handling for specializations of __local_time_fmt, including the
3769         time zone abbreviation in the output if __is_neg is true.
3770         (formatter<chrono::tai_time<D>>::format): Add comment.
3771         (formatter<chrono::gps_time<D>>::format): Likewise.
3772         (formatter<chrono::__detail::__local_time_fmt::format): Call
3773         _M_format with true for the __is_neg flag.
3774         * testsuite/std/time/clock/gps/io.cc: Remove unused variable.
3775         * testsuite/std/time/clock/local/io.cc: Fix test error that
3776         checked tai_time instead of local_time. Add tests for
3777         local-time-format-t formatting.
3778         * testsuite/std/time/clock/system/io.cc: Check empty
3779         chrono-specs.
3780         * testsuite/std/time/clock/tai/io.cc: Likewise.
3781         * testsuite/std/time/zoned_time/io.cc: Likewise.
3782
3783 2024-07-30  Jonathan Wakely  <jwakely@redhat.com>
3784
3785         * include/std/expected (expected(U&&), operator=(U&&))
3786         (value_or): Use remove_cv_t on default template argument, as per
3787         LWG 3886.
3788         * include/std/optional (optional(U&&), operator=(U&&))
3789         (value_or): Likewise.
3790         * testsuite/20_util/expected/lwg3886.cc: New test.
3791         * testsuite/20_util/optional/cons/lwg3886.cc: New test.
3792
3793 2024-07-30  Jonathan Wakely  <jwakely@redhat.com>
3794
3795         * src/c++17/fs_ops.cc: Fix file name in comment.
3796
3797 2024-07-30  Jonathan Wakely  <jwakely@redhat.com>
3798
3799         * src/c++17/fs_ops.cc (auto_win_file_handle): Change constructor
3800         parameter from const path& to const wchar_t*.
3801         (fs::equiv_files): New function.
3802         (fs::equivalent): Use equiv_files.
3803         * src/filesystem/ops-common.h (fs::equiv_files): Declare.
3804         (do_copy_file): Use equiv_files.
3805         * src/filesystem/ops.cc (fs::equiv_files): Define.
3806         (fs::copy, fs::equivalent): Use equiv_files.
3807         * testsuite/27_io/filesystem/operations/copy.cc: Test
3808         overwriting directory contents recursively.
3809         * testsuite/27_io/filesystem/operations/copy_file.cc: Test
3810         overwriting existing files.
3811
3812 2024-07-30  Lennox Shou Hao Ho  <lennoxhoe@gmail.com>
3813
3814         PR libstdc++/113663
3815         * src/c++17/fs_ops.cc (fs::equivalent): Moved helper class
3816         auto_handle to anonymous namespace as auto_win_file_handle.
3817         (fs::hard_link_count): Changed Windows implementation to use
3818         information provided by GetFileInformationByHandle which is more
3819         reliable.
3820         * testsuite/27_io/filesystem/operations/hard_link_count.cc: New
3821         test.
3822
3823 2024-07-29  Thomas Schwinge  <tschwinge@baylibre.com>
3824
3825         * testsuite/lib/libstdc++.exp (file-io-diff): Polish.
3826
3827 2024-07-28  Sam James  <sam@gentoo.org>
3828
3829         PR libstdc++/110572
3830         * testsuite/18_support/type_info/110572.cc: Fix dg-do directive order.
3831
3832 2024-07-27  Jonathan Wakely  <jwakely@redhat.com>
3833
3834         * include/std/charconv (__to_chars_16, __to_chars_10)
3835         (__to_chars_8, __to_chars_2, __to_chars): Cast ptrdiff_t to
3836         size_t for comparison.
3837         (__to_chars_i): Check for first >= last instead of first == last
3838         for initial sanity check.
3839
3840 2024-07-27  Jonathan Wakely  <jwakely@redhat.com>
3841
3842         * include/bits/std_function.h: Add comment about LWG 3617 being
3843         supported.
3844
3845 2024-07-27  Jonathan Wakely  <jwakely@redhat.com>
3846
3847         * include/bits/stl_algobase.h (__find_if): Remove overloads for
3848         dispatching on iterator_category. Do not unroll loop manually.
3849         * include/bits/stl_algo.h (__find_if_not): Remove
3850         iterator_category argument from __find_if call.
3851
3852 2024-07-25  Jonathan Wakely  <jwakely@redhat.com>
3853
3854         * include/std/expected (expected::value): Add assertions for LWG
3855         3843 requirements.
3856         (expected<cv void, E>::value): Add assertions for LWG 3940
3857         requirements.
3858
3859 2024-07-25  Jonathan Wakely  <jwakely@redhat.com>
3860
3861         * include/std/format (basic_format_args): Remove default
3862         constructor, as per LWG 4106.
3863         * testsuite/std/format/arguments/args.cc: Check it isn't default
3864         constructible.
3865
3866 2024-07-25  Jonathan Wakely  <jwakely@redhat.com>
3867
3868         * include/bits/utility.h (_Swallow_assign): Make assignment
3869         constexpr for C++11 as well, and add noexcept.
3870         * include/std/tuple (_Swallow_assign, ignore): Move to
3871         bits/utility.h.
3872         * testsuite/20_util/headers/utility/ignore.cc: New test.
3873
3874 2024-07-25  Jonathan Wakely  <jwakely@redhat.com>
3875
3876         * include/std/optional: Reorder parameters in comparison
3877         operators as per LWG 2945.
3878
3879 2024-07-25  Patrick Palka  <ppalka@redhat.com>
3880
3881         PR libstdc++/116038
3882         * include/std/functional (_Bind_front::operator()): Use __like_t
3883         instead of std::forward when forwarding __self.
3884         (_Bind_back::operator()): Likewise.
3885         * include/std/ranges (_Partial::operator()): Likewise.
3886         (_Pipe::operator()): Likewise.
3887         * testsuite/20_util/function_objects/bind_back/116038.cc: New test.
3888         * testsuite/20_util/function_objects/bind_front/116038.cc: New test.
3889         * testsuite/std/ranges/adaptors/116038.cc: New test.
3890
3891 2024-07-25  Jonathan Wakely  <jwakely@redhat.com>
3892
3893         * include/std/expected (bad_expected_access<void>): Add noexcept
3894         to special member functions, as per LWG 4031.
3895         * testsuite/20_util/expected/bad.cc: Check for nothrow copy and
3896         move members.
3897
3898 2024-07-25  Jonathan Wakely  <jwakely@redhat.com>
3899
3900         * include/std/optional (optional): Use C++20 features to
3901         simplify overload sets for constructors and assignment
3902         operators.
3903
3904 2024-07-25  Jonathan Wakely  <jwakely@redhat.com>
3905
3906         * include/std/optional (optional): Constrain constructors to
3907         prevent problematic bool conversions, as per LWG 3836.
3908         * testsuite/20_util/optional/cons/lwg3836.cc: New test.
3909
3910 2024-07-25  Jonathan Wakely  <jwakely@redhat.com>
3911
3912         * include/std/expected (expected): Constrain constructors to
3913         prevent problematic bool conversions, as per LWG 3836.
3914         * testsuite/20_util/expected/lwg3836.cc: New test.
3915
3916 2024-07-25  Jonathan Wakely  <jwakely@redhat.com>
3917
3918         * include/std/optional (_Optional_payload_base::_Storage)
3919         [C++20]: Define constrained non-trivial destructor.
3920         (_Optional_payload_base::_Storage<U, false>) [C++20]: Do not
3921         define partial specialization when primary template has
3922         constrained destructor.
3923         (_Optional_base) [C++20]: Define constrained trivial copy and
3924         move cons and move constructors. Define payload accessors here
3925         instead of inheriting them from _Optional_base_impl.
3926         (_Optional_base_impl, _Optional_base<T, false, true>)
3927         (_Optional_base<T, true, false>, _Optional_base<T, true, true>)
3928         [C++20]: Do not define.
3929
3930 2024-07-25  Jonathan Wakely  <jwakely@redhat.com>
3931
3932         * include/std/optional (optional): Add using-declaraction for
3933         _Base::_M_get and declare optional<U> as friend.
3934         (optional(const optional<U>&)): Use
3935         _M_get instead of operator*.
3936         (optional(optional<U>&&)): Likewise.
3937         (operator=(const optional<U>&)): Likewise.
3938         (operator=(optional<U>&&)): Likewise.
3939         (and_then, tansform): Likewise.
3940
3941 2024-07-25  Jonathan Wakely  <jwakely@redhat.com>
3942
3943         * include/std/optional (_Optional_base_impl::_M_get()): Move
3944         assertions to ...
3945         (optional::operator->, optional::operator*): ... here.
3946
3947 2024-07-25  Andrew Pinski  <quic_apinski@quicinc.com>
3948
3949         * testsuite/lib/libstdc++.exp (v3_target_compile): Call
3950         string trim on v3_target_compile before calling split.
3951
3952 2024-07-24  Jonathan Wakely  <jwakely@redhat.com>
3953
3954         PR libstdc++/116070
3955         * include/std/istream: Check feature test macro before using
3956         is_class_v and is_same_v.
3957         * include/std/ostream: Likewise.
3958
3959 2024-07-24  Jonathan Wakely  <jwakely@redhat.com>
3960
3961         PR libstdc++/116070
3962         * include/bits/stl_bvector.h: Check feature test macro before
3963         using is_default_constructible_v.
3964
3965 2024-07-24  Michael Levine  <mlevine55@bloomberg.net>
3966
3967         * include/bits/ranges_algobase.h: Remove duplicate include of
3968         <bits/stl_algobase.h>.
3969
3970 2024-07-24  Jonathan Wakely  <jwakely@redhat.com>
3971
3972         PR libstdc++/12048
3973         * testsuite/ext/stdio_sync_filebuf/wchar_t/12948-1.cc: Move to...
3974         * testsuite/ext/stdio_sync_filebuf/wchar_t/12048-1.cc: ...here.
3975         * testsuite/ext/stdio_sync_filebuf/wchar_t/12948-2.cc: Move to...
3976         * testsuite/ext/stdio_sync_filebuf/wchar_t/12048-2.cc: ...here.
3977         * testsuite/ext/stdio_sync_filebuf/wchar_t/12948-3.cc: Move to...
3978         * testsuite/ext/stdio_sync_filebuf/wchar_t/12048-3.cc: ...here.
3979         * testsuite/ext/stdio_sync_filebuf/wchar_t/12948-4.cc: Move to...
3980         * testsuite/ext/stdio_sync_filebuf/wchar_t/12048-4.cc: ...here.
3981
3982 2024-07-24  Jonathan Wakely  <jwakely@redhat.com>
3983
3984         * testsuite/lib/libstdc++.exp (libstdc++_init): Do not copy all
3985         data files into test directory.
3986
3987 2024-07-24  Jonathan Wakely  <jwakely@redhat.com>
3988
3989         * testsuite/20_util/hash/chi2_q_document_words.cc: Use
3990         dg-additional-files for input text.
3991         * testsuite/performance/ext/pb_ds/all_text_find.cc: Likewise.
3992         * testsuite/performance/ext/pb_ds/multimap_text_find.hpp:
3993         Likewise.
3994         * testsuite/performance/ext/pb_ds/multimap_text_insert.hpp:
3995         Likewise.
3996         * testsuite/performance/ext/pb_ds/multimap_text_insert_mem.hpp:
3997         Likewise.
3998         * testsuite/performance/ext/pb_ds/priority_queue_text_join.cc:
3999         Likewise.
4000         * testsuite/performance/ext/pb_ds/priority_queue_text_modify.hpp: Likewise.
4001         * testsuite/performance/ext/pb_ds/priority_queue_text_pop_mem.cc: Likewise.
4002         * testsuite/performance/ext/pb_ds/priority_queue_text_push.cc:
4003         Likewise.
4004         * testsuite/performance/ext/pb_ds/priority_queue_text_push_pop.cc: Likewise.
4005         * testsuite/performance/ext/pb_ds/tree_text_insert.cc: Likewise.
4006         * testsuite/performance/ext/pb_ds/tree_text_lor_find.cc:
4007         Likewise.
4008
4009 2024-07-24  Jonathan Wakely  <jwakely@redhat.com>
4010
4011         * testsuite/25_algorithms/advance/istreambuf_iterators/char/2.cc:
4012         Use dg-additional-files.
4013         * testsuite/25_algorithms/advance/istreambuf_iterators/wchar_t/2.cc:
4014         Likewise.
4015         * testsuite/25_algorithms/copy/streambuf_iterators/char/4.cc:
4016         Likewise.
4017         * testsuite/25_algorithms/copy/streambuf_iterators/wchar_t/4.cc:
4018         Likewise.
4019         * testsuite/25_algorithms/copy_n/istreambuf_iterator/2.cc:
4020         Likewise.
4021         * testsuite/25_algorithms/copy_n/istreambuf_iterator/deque.cc:
4022         Likewise.
4023         * testsuite/25_algorithms/find/istreambuf_iterators/char/2.cc:
4024         Likewise.
4025         * testsuite/25_algorithms/find/istreambuf_iterators/wchar_t/2.cc:
4026         Likewise.
4027
4028 2024-07-24  Jonathan Wakely  <jwakely@redhat.com>
4029
4030         * testsuite/27_io/basic_filebuf/close/char/1.cc: Remove
4031         @require@ and @diff@. Use dg-final file-io-diff action.
4032         * testsuite/27_io/basic_istream/extractors_other/char/2.cc:
4033         Likewise.
4034         * testsuite/27_io/basic_istream/extractors_other/wchar_t/2.cc:
4035         Likewise.
4036         * testsuite/27_io/basic_istream/get/char/2.cc: Likewise.
4037         * testsuite/27_io/basic_istream/get/wchar_t/2.cc: Likewise.
4038         * testsuite/27_io/basic_istream/ignore/char/3.cc: Likewise.
4039         * testsuite/27_io/basic_istream/ignore/wchar_t/3.cc: Likewise.
4040         * testsuite/27_io/basic_istream/peek/char/6414.cc: Likewise.
4041         * testsuite/27_io/basic_istream/peek/wchar_t/6414.cc: Likewise.
4042         * testsuite/27_io/basic_istream/seekg/char/fstream.cc: Likewise.
4043         * testsuite/27_io/basic_istream/seekg/wchar_t/fstream.cc:
4044         Likewise.
4045         * testsuite/27_io/basic_istream/tellg/char/fstream.cc: Likewise.
4046         * testsuite/27_io/basic_istream/tellg/wchar_t/fstream.cc:
4047         Likewise.
4048         * testsuite/27_io/basic_ofstream/open/char/1.cc: Likewise.
4049         * testsuite/27_io/basic_ostream/inserters_other/char/1.cc:
4050         Likewise.
4051         * testsuite/27_io/basic_ostream/inserters_other/wchar_t/1.cc:
4052         Likewise.
4053         * testsuite/27_io/ios_base/sync_with_stdio/1.cc: Likewise.
4054         * testsuite/27_io/basic_ostream/inserters_other/char/2.cc:
4055         Likewise. Check file positions.
4056         * testsuite/27_io/basic_ostream/inserters_other/wchar_t/2.cc:
4057         Likewise.
4058         * testsuite/lib/libstdc++.exp (file-io-diff): New proc.
4059
4060 2024-07-24  Jonathan Wakely  <jwakely@redhat.com>
4061
4062         * testsuite/27_io/basic_filebuf/imbue/char/2.cc: Use
4063         dg-additional-files.
4064         * testsuite/27_io/basic_filebuf/imbue/wchar_t/2.cc: Likewise.
4065         * testsuite/27_io/basic_filebuf/open/char/path.cc: Likewise.
4066         * testsuite/27_io/basic_filebuf/pbackfail/char/9761.cc:
4067         Likewise.
4068         * testsuite/27_io/basic_filebuf/seekoff/char/3-in.cc: Likewise.
4069         * testsuite/27_io/basic_filebuf/seekoff/char/3-io.cc: Likewise.
4070         * testsuite/27_io/basic_filebuf/seekpos/char/3-in.cc: Likewise.
4071         * testsuite/27_io/basic_filebuf/seekpos/char/3-io.cc: Likewise.
4072         * testsuite/27_io/basic_filebuf/setbuf/char/1.cc: Likewise.
4073         * testsuite/27_io/basic_filebuf/sgetn/char/3.cc: Likewise.
4074         * testsuite/27_io/basic_filebuf/underflow/10096.cc: Likewise.
4075         * testsuite/27_io/basic_fstream/cons/char/path.cc: Likewise.
4076         * testsuite/27_io/basic_fstream/open/char/path.cc: Likewise.
4077         * testsuite/27_io/basic_ifstream/assign/1.cc: Likewise.
4078         * testsuite/27_io/basic_ifstream/cons/move.cc: Likewise.
4079         * testsuite/27_io/basic_ifstream/cons/char/path.cc: Likewise.
4080         * testsuite/27_io/basic_ifstream/open/char/path.cc: Likewise.
4081         * testsuite/27_io/basic_ifstream/open/wchar_t/1.cc: Likewise.
4082         * testsuite/27_io/objects/char/10.cc: Likewise.
4083         * testsuite/27_io/objects/char/12048-1.cc: Likewise.
4084         * testsuite/27_io/objects/char/12048-2.cc: Likewise.
4085         * testsuite/27_io/objects/char/12048-3.cc: Likewise.
4086         * testsuite/27_io/objects/char/12048-4.cc: Likewise.
4087         * testsuite/27_io/objects/char/12048-5.cc: Likewise.
4088         * testsuite/27_io/objects/wchar_t/12048-1.cc: Likewise.
4089         * testsuite/27_io/objects/wchar_t/12048-2.cc: Likewise.
4090         * testsuite/27_io/objects/wchar_t/12048-3.cc: Likewise.
4091         * testsuite/27_io/objects/wchar_t/12048-4.cc: Likewise.
4092         * testsuite/27_io/objects/wchar_t/12048-5.cc: Likewise.
4093         * testsuite/ext/stdio_sync_filebuf/char/12048-1.cc: Likewise.
4094         * testsuite/ext/stdio_sync_filebuf/char/12048-2.cc: Likewise.
4095         * testsuite/ext/stdio_sync_filebuf/char/12048-3.cc: Likewise.
4096         * testsuite/ext/stdio_sync_filebuf/char/12048-4.cc: Likewise.
4097         * testsuite/ext/stdio_sync_filebuf/wchar_t/12948-1.cc: Likewise.
4098         * testsuite/ext/stdio_sync_filebuf/wchar_t/12948-2.cc: Likewise.
4099         * testsuite/ext/stdio_sync_filebuf/wchar_t/12948-3.cc: Likewise.
4100         * testsuite/ext/stdio_sync_filebuf/wchar_t/12948-4.cc: Likewise.
4101
4102 2024-07-24  Jonathan Wakely  <jwakely@redhat.com>
4103
4104         * testsuite/27_io/basic_filebuf/close/char/2.cc: Remove
4105         @require@ and @diff@ markup. Use dg-additional-files. Remove
4106         unused variable.
4107         * testsuite/27_io/basic_filebuf/close/char/3.cc: Remove
4108         @require@ and @diff@ markup. Use dg-additional-files.
4109         * testsuite/27_io/basic_filebuf/close/char/4.cc: Likewise.
4110         * testsuite/27_io/basic_filebuf/close/char/5.cc: Likewise.
4111         * testsuite/27_io/basic_filebuf/in_avail/char/1.cc: Likewise.
4112         * testsuite/27_io/basic_filebuf/is_open/char/1.cc: Likewise.
4113         * testsuite/27_io/basic_filebuf/open/char/1.cc: Likewise.
4114         * testsuite/27_io/basic_filebuf/open/char/2.cc: Likewise.
4115         * testsuite/27_io/basic_filebuf/sbumpc/char/1-in.cc: Likewise.
4116         * testsuite/27_io/basic_filebuf/sbumpc/char/1-io.cc: Likewise.
4117         * testsuite/27_io/basic_filebuf/sbumpc/char/2-in.cc: Likewise.
4118         * testsuite/27_io/basic_filebuf/sbumpc/char/2-io.cc: Likewise.
4119         * testsuite/27_io/basic_filebuf/seekoff/char/1-in.cc: Likewise.
4120         * testsuite/27_io/basic_filebuf/seekoff/char/1-out.cc: Likewise.
4121         * testsuite/27_io/basic_filebuf/seekoff/char/2-in.cc: Likewise.
4122         * testsuite/27_io/basic_filebuf/seekoff/char/2-out.cc: Likewise.
4123         * testsuite/27_io/basic_filebuf/seekpos/char/1-in.cc: Likewise.
4124         * testsuite/27_io/basic_filebuf/seekpos/char/1-out.cc: Likewise.
4125         * testsuite/27_io/basic_filebuf/seekpos/char/2-in.cc: Likewise.
4126         * testsuite/27_io/basic_filebuf/seekpos/char/2-out.cc: Likewise.
4127         * testsuite/27_io/basic_filebuf/sgetc/char/1-in.cc: Likewise.
4128         * testsuite/27_io/basic_filebuf/sgetc/char/1-io.cc: Likewise.
4129         * testsuite/27_io/basic_filebuf/sgetc/char/2-in.cc: Likewise.
4130         * testsuite/27_io/basic_filebuf/sgetc/char/2-io.cc: Likewise.
4131         * testsuite/27_io/basic_filebuf/sgetn/char/1-in.cc: Likewise.
4132         * testsuite/27_io/basic_filebuf/sgetn/char/1-io.cc: Likewise.
4133         * testsuite/27_io/basic_filebuf/sgetn/char/2-in.cc: Likewise.
4134         * testsuite/27_io/basic_filebuf/sgetn/char/2-io.cc: Likewise.
4135         * testsuite/27_io/basic_filebuf/snextc/char/1-in.cc: Likewise.
4136         * testsuite/27_io/basic_filebuf/snextc/char/1-io.cc: Likewise.
4137         * testsuite/27_io/basic_filebuf/snextc/char/1-out.cc: Likewise.
4138         * testsuite/27_io/basic_filebuf/snextc/char/2-in.cc: Likewise.
4139         * testsuite/27_io/basic_filebuf/snextc/char/2-io.cc: Likewise.
4140         * testsuite/27_io/basic_filebuf/sputbackc/char/1-in.cc:
4141         Likewise.
4142         * testsuite/27_io/basic_filebuf/sputbackc/char/2-in.cc:
4143         Likewise.
4144         * testsuite/27_io/basic_filebuf/sputc/char/1-in.cc: Likewise.
4145         * testsuite/27_io/basic_filebuf/sputc/char/2-in.cc: Likewise.
4146         * testsuite/27_io/basic_filebuf/sputc/char/2-io.cc: Likewise.
4147         * testsuite/27_io/basic_filebuf/sputn/char/1-in.cc: Likewise.
4148         * testsuite/27_io/basic_filebuf/sputn/char/1-io.cc: Likewise.
4149         Remove unused variable.
4150         * testsuite/27_io/basic_filebuf/sputn/char/2-in.cc: Remove
4151         @require@ and @diff@ markup. Use dg-additional-files.
4152         * testsuite/27_io/basic_filebuf/sungetc/char/1-in.cc: Likewise.
4153         * testsuite/27_io/basic_filebuf/sungetc/char/2-in.cc: Likewise.
4154         * testsuite/27_io/basic_ifstream/cons/char/1.cc: Likewise.
4155         * testsuite/27_io/basic_ifstream/open/char/1.cc: Likewise.
4156         * testsuite/27_io/basic_ifstream/rdbuf/char/2832.cc: Likewise.
4157         * testsuite/27_io/basic_istream/readsome/char/6746-2.cc:
4158         Likewise.
4159         * testsuite/27_io/basic_istream/readsome/wchar_t/6746-2.cc:
4160         Likewise.
4161         * testsuite/27_io/basic_istream/seekg/char/sstream.cc: Likewise.
4162         * testsuite/27_io/basic_istream/seekg/wchar_t/sstream.cc:
4163         Likewise.
4164         * testsuite/27_io/basic_istream/tellg/char/1.cc: Likewise.
4165         * testsuite/27_io/basic_istream/tellg/char/sstream.cc: Likewise.
4166         * testsuite/27_io/basic_istream/tellg/wchar_t/1.cc: Likewise.
4167         * testsuite/27_io/basic_istream/tellg/wchar_t/sstream.cc:
4168         Likewise.
4169         * testsuite/27_io/basic_ofstream/open/char/1.cc: Likewise.
4170         * testsuite/lib/dg-options.exp (dg-additional-files): Append to
4171         v3_additional_files instead of replacing.
4172         * testsuite/lib/libstdc++.exp (v3_target_compile): Reset
4173         v3_additional_files after copying files.
4174
4175 2024-07-24  Jonathan Wakely  <jwakely@redhat.com>
4176
4177         * testsuite/27_io/basic_filebuf/close/char/4879.cc: Remove
4178         @require@ and @diff@ comments.
4179         * testsuite/27_io/basic_filebuf/close/char/9964.cc: Likewise.
4180         * testsuite/27_io/basic_filebuf/open/char/3.cc: Likewise.
4181         * testsuite/27_io/basic_filebuf/open/char/9507.cc: Likewise.
4182         * testsuite/27_io/basic_filebuf/sbumpc/char/1-out.cc: Likewise.
4183         * testsuite/27_io/basic_filebuf/sbumpc/char/2-out.cc: Likewise.
4184         * testsuite/27_io/basic_filebuf/sgetc/char/1-out.cc: Likewise.
4185         * testsuite/27_io/basic_filebuf/sgetc/char/2-out.cc: Likewise.
4186         * testsuite/27_io/basic_filebuf/sgetn/char/1-out.cc: Likewise.
4187         * testsuite/27_io/basic_filebuf/sgetn/char/2-out.cc: Likewise.
4188         * testsuite/27_io/basic_filebuf/snextc/char/2-out.cc: Likewise.
4189         * testsuite/27_io/basic_filebuf/sputbackc/char/1-io.cc:
4190         Likewise.
4191         * testsuite/27_io/basic_filebuf/sputbackc/char/1-out.cc:
4192         Likewise.
4193         * testsuite/27_io/basic_filebuf/sputbackc/char/2-io.cc:
4194         Likewise.
4195         * testsuite/27_io/basic_filebuf/sputbackc/char/2-out.cc:
4196         Likewise.
4197         * testsuite/27_io/basic_filebuf/sputc/char/1-out.cc: Likewise.
4198         * testsuite/27_io/basic_filebuf/sputc/char/2-out.cc: Likewise.
4199         * testsuite/27_io/basic_filebuf/sputn/char/1-out.cc: Likewise.
4200         * testsuite/27_io/basic_filebuf/sputn/char/2-out.cc: Likewise.
4201         * testsuite/27_io/basic_filebuf/sungetc/char/1-io.cc: Likewise.
4202         * testsuite/27_io/basic_filebuf/sungetc/char/1-out.cc: Likewise.
4203         * testsuite/27_io/basic_filebuf/sungetc/char/2-io.cc: Likewise.
4204         * testsuite/27_io/basic_filebuf/sungetc/char/2-out.cc: Likewise.
4205         * testsuite/27_io/basic_filebuf/sputc/char/1-io.cc: Likewise.
4206         Remove unused variable.
4207         * testsuite/27_io/basic_filebuf/sputn/char/2-io.cc: Likewise.
4208         * testsuite/27_io/basic_ofstream/cons/char/1.cc: Remove
4209         @require@ and @diff@ comments. Remove unused variables.
4210         * testsuite/27_io/basic_ofstream/rdbuf/char/2832.cc: Remove
4211         * testsuite/27_io/ios_base/sync_with_stdio/2.cc: Likewise.
4212
4213 2024-07-23  Jonathan Wakely  <jwakely@redhat.com>
4214
4215         * src/c++23/print.cc (__open_terminal): Use [[maybe_unused]] on
4216         parameter.
4217
4218 2024-07-23  Detlef Vollmann  <dv@vollmann.ch>
4219
4220         PR libstdc++/115482
4221         * src/c++23/print.cc (__open_terminal) [__AVR__]: Do not use
4222         isatty.
4223
4224 2024-07-18  Patrick Palka  <ppalka@redhat.com>
4225
4226         * include/experimental/socket
4227         (basic_socket_iostream::basic_socket_iostream): Fix typo.
4228         * include/tr2/dynamic_bitset
4229         (__dynamic_bitset_base::_M_is_proper_subset_of): Likewise.
4230
4231 2024-07-12  Alexandre Oliva  <oliva@adacore.com>
4232
4233         * testsuite/decimal/binary-arith.cc: Require dfprt.
4234         * testsuite/decimal/comparison.cc: Likewise.
4235         * testsuite/decimal/compound-assignment.cc: Likewise.
4236         * testsuite/decimal/compound-assignment-memfunc.cc: Likewise.
4237         * testsuite/decimal/make-decimal.cc: Likewise.
4238         * testsuite/decimal/pr54036-1.cc: Likewise.
4239         * testsuite/decimal/pr54036-2.cc: Likewise.
4240         * testsuite/decimal/pr54036-3.cc: Likewise.
4241         * testsuite/decimal/unary-arith.cc: Likewise.
4242
4243 2024-07-11  Jonathan Wakely  <jwakely@redhat.com>
4244
4245         * testsuite/29_atomics/atomic_ref/bool.cc: New test.
4246
4247 2024-07-11  Damien Lebrun-Grandie  <dalg24@gmail.com>
4248
4249         * include/bits/atomic_base.h (__atomic_ref): Do not use integral
4250         specialization for bool.
4251
4252 2024-07-11  Gerald Pfeifer  <gerald@pfeifer.com>
4253
4254         * doc/xml/manual/using.xml: Switch gcc.gnu.org links to https.
4255         * doc/html/manual/using_concurrency.html: Regenerate.
4256         * doc/html/manual/using_dynamic_or_shared.html: Ditto.
4257         * doc/html/manual/using_headers.html: Ditto.
4258         * doc/html/manual/using_namespaces.html: Ditto.
4259
4260 2024-07-11  Jonathan Wakely  <jwakely@redhat.com>
4261
4262         PR libstdc++/108636
4263         * testsuite/27_io/filesystem/path/108636.cc: Require normal
4264         mode.
4265
4266 2024-07-10  Jonathan Wakely  <jwakely@redhat.com>
4267
4268         PR libstdc++/114387
4269         * include/std/format (basic_format_context): Define copy
4270         operations as deleted, as per LWG 4061.
4271         * testsuite/std/format/context.cc: New test.
4272
4273 2024-07-10  Jonathan Wakely  <jwakely@redhat.com>
4274
4275         * src/c++26/text_encoding.cc (__locale_encoding): Add to unnamed
4276         namespace.
4277         (std::locale::encoding): Optimize for "C" and "*" names.
4278
4279 2024-07-10  Jonathan Wakely  <jwakely@redhat.com>
4280
4281         PR libstdc++/115854
4282         * include/bits/stl_bvector.h (_Bvector_base): Convert allocator
4283         to rebound type explicitly.
4284         * testsuite/23_containers/vector/allocator/115854.cc: New test.
4285         * testsuite/23_containers/vector/bool/allocator/115854.cc: New test.
4286
4287 2024-07-10  Jonathan Wakely  <jwakely@redhat.com>
4288
4289         PR libstdc++/115799
4290         * include/bits/ranges_util.h (__find_fn): Make conversion
4291         from difference type ti size_t explicit.
4292         * testsuite/25_algorithms/find/bytes.cc: Check ranges::find with
4293         __gnu_test::test_contiguous_range.
4294         * testsuite/std/ranges/range.cc: Adjust expected difference_type
4295         for __gnu_test::test_contiguous_range.
4296         * testsuite/util/testsuite_iterators.h (contiguous_iterator_wrapper):
4297         Use __max_diff_type as difference type.
4298         (test_range::sentinel, test_sized_range_sized_sent::sentinel):
4299         Ensure that operator- returns difference_type.
4300
4301 2024-07-10  Marek Polacek  <polacek@redhat.com>
4302
4303         * testsuite/std/ranges/access/101782.cc: Don't compile with
4304         -fconcepts-ts.
4305
4306 2024-07-08  Jonathan Wakely  <jwakely@redhat.com>
4307
4308         PR libstdc++/115807
4309         * include/c_compatibility/stdatomic.h (_Atomic): Ensure it
4310         refers to std::atomic in the global namespace.
4311         * testsuite/29_atomics/headers/stdatomic.h/115807.cc: New test.
4312
4313 2024-07-07  Gerald Pfeifer  <gerald@pfeifer.com>
4314
4315         * doc/xml/manual/configure.xml: Update Autobook 14 link.
4316         Update GCC installation instructions link.
4317         * doc/html/manual/configure.html: Regenerate.
4318
4319 2024-07-07  Jonathan Wakely  <jwakely@redhat.com>
4320
4321         PR libstdc++/115799
4322         * include/bits/stl_algo.h (find): Use 'if constexpr' so that
4323         memchr optimization is a discarded statement for non-contiguous
4324         iterators.
4325         * testsuite/25_algorithms/find/bytes.cc: Check with input
4326         iterators.
4327
4328 2024-07-07  Jonathan Wakely  <jwakely@redhat.com>
4329
4330         PR libstdc++/115799
4331         * include/bits/ranges_util.h (__find_fn): Return iterator
4332         instead of sentinel.
4333         * testsuite/25_algorithms/find/constrained.cc: Check non-common
4334         contiguous sized range of char.
4335
4336 2024-07-06  Jonathan Wakely  <jwakely@redhat.com>
4337
4338         * testsuite/17_intro/headers/c++1998/all_attributes.cc: Add
4339         attribute names from later standards and remove dg-options.
4340         * testsuite/17_intro/headers/c++1998/stdc++.cc: Add c++98_only
4341         target selector.
4342         * testsuite/17_intro/headers/c++1998/stdc++_multiple_inclusion.cc:
4343         Remove content and include stdc++.cc twice instead.
4344         * testsuite/17_intro/headers/c++2011/stdc++.cc: Replace
4345         dg-options with c++11 target selector.
4346         * testsuite/17_intro/headers/c++2011/stdc++_multiple_inclusion.cc:
4347         Remove content and include stdc++.cc twice instead.
4348         * testsuite/17_intro/headers/c++2011/all_attributes.cc: Removed.
4349         * testsuite/17_intro/headers/c++2011/all_no_exceptions.cc: Removed.
4350         * testsuite/17_intro/headers/c++2011/all_no_rtti.cc: Removed.
4351         * testsuite/17_intro/headers/c++2011/all_pedantic_errors.cc: Removed.
4352         * testsuite/17_intro/headers/c++2011/charset.cc: Removed.
4353         * testsuite/17_intro/headers/c++2011/operator_names.cc: Removed.
4354         * testsuite/17_intro/headers/c++2014/all_attributes.cc: Removed.
4355         * testsuite/17_intro/headers/c++2014/all_no_exceptions.cc: Removed.
4356         * testsuite/17_intro/headers/c++2014/all_no_rtti.cc: Removed.
4357         * testsuite/17_intro/headers/c++2014/all_pedantic_errors.cc: Removed.
4358         * testsuite/17_intro/headers/c++2014/charset.cc: Removed.
4359         * testsuite/17_intro/headers/c++2014/operator_names.cc: Removed.
4360         * testsuite/17_intro/headers/c++2014/stdc++.cc: Removed.
4361         * testsuite/17_intro/headers/c++2014/stdc++_multiple_inclusion.cc: Removed.
4362         * testsuite/17_intro/headers/c++2017/all_attributes.cc: Removed.
4363         * testsuite/17_intro/headers/c++2017/all_no_exceptions.cc: Removed.
4364         * testsuite/17_intro/headers/c++2017/all_no_rtti.cc: Removed.
4365         * testsuite/17_intro/headers/c++2017/all_pedantic_errors.cc: Removed.
4366         * testsuite/17_intro/headers/c++2017/charset.cc: Removed.
4367         * testsuite/17_intro/headers/c++2017/operator_names.cc: Removed.
4368         * testsuite/17_intro/headers/c++2017/stdc++.cc: Removed.
4369         * testsuite/17_intro/headers/c++2017/stdc++_multiple_inclusion.cc: Removed.
4370         * testsuite/17_intro/headers/c++2020/all_attributes.cc: Removed.
4371         * testsuite/17_intro/headers/c++2020/all_no_exceptions.cc: Removed.
4372         * testsuite/17_intro/headers/c++2020/all_no_rtti.cc: Removed.
4373         * testsuite/17_intro/headers/c++2020/all_pedantic_errors.cc: Removed.
4374         * testsuite/17_intro/headers/c++2020/charset.cc: Removed.
4375         * testsuite/17_intro/headers/c++2020/operator_names.cc: Removed.
4376         * testsuite/17_intro/headers/c++2020/stdc++.cc: Removed.
4377         * testsuite/17_intro/headers/c++2020/stdc++_multiple_inclusion.cc: Removed.
4378
4379 2024-07-06  Jonathan Wakely  <jwakely@redhat.com>
4380
4381         * include/std/variant (_Variant_storage::_M_reset): Use
4382         __unlikely__ form of attribute instead of unlikely.
4383
4384 2024-07-06  Jonathan Wakely  <jwakely@redhat.com>
4385
4386         PR libstdc++/115797
4387         * include/std/type_traits: Ensure "C++" language linkage.
4388         * testsuite/17_intro/headers/c++2011/linkage.cc: Replace
4389         dg-options with c++11 target selector.
4390
4391 2024-07-05  Jonathan Wakely  <jwakely@redhat.com>
4392
4393         PR c++/115747
4394         * testsuite/tr1/2_general_utilities/shared_ptr/cons/43820_neg.cc:
4395         Add dg-error for new C++26 diagnostics.
4396
4397 2024-07-05  Jonathan Wakely  <jwakely@redhat.com>
4398
4399         * include/bits/stl_uninitialized.h (_UninitDestroyGuard): New
4400         class template and partial specialization.
4401         (__do_uninit_copy, __do_uninit_fill, __do_uninit_fill_n)
4402         (__uninitialized_copy_a, __uninitialized_fill_a)
4403         (__uninitialized_fill_n_a, __uninitialized_copy_move)
4404         (__uninitialized_move_copy, __uninitialized_fill_move)
4405         (__uninitialized_move_fill, __uninitialized_default_1)
4406         (__uninitialized_default_n_a, __uninitialized_default_novalue_1)
4407         (__uninitialized_default_novalue_n_1, __uninitialized_copy_n)
4408         (__uninitialized_copy_n_pair): Use it.
4409
4410 2024-07-05  Jonathan Wakely  <jwakely@redhat.com>
4411
4412         PR libstdc++/88545
4413         PR libstdc++/115040
4414         * include/bits/cpp_type_traits.h (__can_use_memchr_for_find):
4415         New variable template.
4416         * include/bits/ranges_util.h (__find_fn): Use memchr when
4417         possible.
4418         * include/bits/stl_algo.h (find): Likewise.
4419         * testsuite/25_algorithms/find/bytes.cc: New test.
4420
4421 2024-07-04  John David Anglin  <danglin@gcc.gnu.org>
4422
4423         PR libstdc++/98678
4424         * testsuite/30_threads/future/members/poll.cc: Skip on hppa*-*-linux*.
4425
4426 2024-06-28  Jonathan Wakely  <jwakely@redhat.com>
4427
4428         PR libstdc++/115585
4429         * src/c++11/assert_fail.cc (__glibcxx_assert_fail): Add
4430         definition for non-verbose builds.
4431
4432 2024-06-28  Jonathan Wakely  <jwakely@redhat.com>
4433
4434         PR libstdc++/101485
4435         * include/bits/stl_algobase.h (__equal_aux1): Check for
4436         std::byte as well.
4437         * testsuite/25_algorithms/equal/101485.cc: New test.
4438
4439 2024-06-28  Jonathan Wakely  <jwakely@redhat.com>
4440
4441         PR libstdc++/104395
4442         * include/bits/new_allocator.h: Disable extended alignment
4443         support in C++98 mode.
4444         * include/bits/stl_tempbuf.h: Likewise.
4445         * include/ext/bitmap_allocator.h: Likewise.
4446         * include/ext/malloc_allocator.h: Likewise.
4447         * include/ext/mt_allocator.h: Likewise.
4448         * include/ext/pool_allocator.h: Likewise.
4449         * testsuite/ext/104395.cc: New test.
4450
4451 2024-06-28  Jonathan Wakely  <jwakely@redhat.com>
4452
4453         * include/ext/aligned_buffer.h (__aligned_membuf): Use
4454         alignas(T) directly instead of defining a struct and using 9its
4455         alignment.
4456         (__aligned_buffer): Remove use of std::aligned_storage.
4457         * testsuite/abi/aligned_buffers.cc: New test.
4458
4459 2024-06-27  Jonathan Wakely  <jwakely@redhat.com>
4460
4461         PR libstdc++/37475
4462         * config/locale/gnu/codecvt_members.cc (Guard): New RAII type.
4463         (do_out, do_in): Return partial if the destination is empty but
4464         the source is not. Use Guard to restore locale on scope exit.
4465         Return immediately on any conversion error.
4466         (do_encoding, do_max_length, do_length): Use Guard.
4467         * testsuite/22_locale/codecvt/in/char/37475.cc: New test.
4468         * testsuite/22_locale/codecvt/in/wchar_t/37475.cc: New test.
4469         * testsuite/22_locale/codecvt/out/char/37475.cc: New test.
4470         * testsuite/22_locale/codecvt/out/wchar_t/37475.cc: New test.
4471
4472 2024-06-27  Alexandre Oliva  <oliva@adacore.com>
4473
4474         PR libstdc++/115454
4475         * testsuite/experimental/simd/pr115454_find_last_set.cc: Defer
4476         to check_vect_support_and_set_flags's default dg-do action.
4477
4478 2024-06-27  Jonathan Wakely  <jwakely@redhat.com>
4479
4480         PR libstdc++/115668
4481         * include/bits/chrono_io.h (formatter<duration<R,P, C>::format):
4482         Do not use chrono::abs.
4483         * testsuite/20_util/duration/io.cc: Check formatting a duration
4484         with unsigned rep.
4485
4486 2024-06-27  Jonathan Wakely  <jwakely@redhat.com>
4487
4488         PR libstdc++/103191
4489         * include/bits/stl_bvector.h (vector<bool>::operator[])
4490         (vector<bool>::front, vector<bool>::back): Add debug assertions.
4491         * testsuite/23_containers/vector/bool/element_access/constexpr.cc:
4492         Remove dg-error that no longer triggers.
4493
4494 2024-06-27  Jonathan Wakely  <jwakely@redhat.com>
4495
4496         PR libstdc++/111250
4497         * include/debug/assertions.h (__glibcxx_requires_non_empty_range)
4498         (__glibcxx_requires_nonempty, __glibcxx_requires_subscript):
4499         Define to __glibcxx_assert expressions or to debug mode
4500         __glibcxx_check_xxx expressions.
4501         * testsuite/23_containers/array/element_access/constexpr_c++17.cc:
4502         Add checks for out-of-bounds accesses in constant expressions.
4503         * testsuite/23_containers/vector/element_access/constexpr.cc:
4504         Likewise.
4505
4506 2024-06-26  Jonathan Wakely  <jwakely@redhat.com>
4507
4508         * scripts/update_release_branch.sh: New file.
4509
4510 2024-06-26  Jonathan Wakely  <jwakely@redhat.com>
4511
4512         * testsuite/20_util/specialized_algorithms/uninitialized_copy/808590.cc:
4513         Copy defaulted assignment operator from 808590-cxx11.cc to
4514         suppress a warning.
4515         * testsuite/20_util/specialized_algorithms/uninitialized_copy/808590-cxx11.cc:
4516         Removed.
4517
4518 2024-06-26  Jonathan Wakely  <jwakely@redhat.com>
4519
4520         PR libstdc++/90276
4521         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc:
4522         Increase timeout for debug mode.
4523         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_binary.cc:
4524         Likewise.
4525         * testsuite/25_algorithms/pstl/alg_nonmodifying/mismatch.cc:
4526         Likewise.
4527         * testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc:
4528         Likewise.
4529         * testsuite/25_algorithms/pstl/alg_sorting/minmax_element.cc:
4530         Likewise.
4531         * testsuite/25_algorithms/pstl/alg_sorting/set_symmetric_difference.cc:
4532         Likewise.
4533
4534 2024-06-26  Jonathan Wakely  <jwakely@redhat.com>
4535
4536         PR libstdc++/90276
4537         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc
4538         [_GLIBCXX_DEBUG]: Add xfail-run-if for debug mode.
4539         * testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc
4540         [_GLIBCXX_DEBUG]: Reduce size of test data.
4541         * testsuite/25_algorithms/pstl/alg_sorting/includes.cc:
4542         Likewise.
4543         * testsuite/25_algorithms/pstl/alg_sorting/set_util.h:
4544         Likewise.
4545
4546 2024-06-26  Jonathan Wakely  <jwakely@redhat.com>
4547
4548         * src/c++20/tzdb.cc (minmax_year, minmax_year2): Remove.
4549         (years_from_to): New class replacing minmax_year and
4550         minmax_year2.
4551         (format_abbrev_str, select_std_or_dst_abbrev): Move earlier in
4552         the file. Handle "-" for letters.
4553         (ZoneInfo::to): Use format_abbrev_str to expand %z.
4554         (ZoneInfo::set_abbrev): Remove exception. Change parameter from
4555         reference to value.
4556         (operator>>(istream&, Rule&)): Do not clear letters when it
4557         contains "-".
4558         (time_zone::_M_get_sys_info): Add missing logic to find the Rule
4559         in effect before the time point.
4560         * testsuite/std/time/tzdb/1.cc: Adjust for vanguard format using
4561         "GMT" as the Zone name, not as a Link to "Etc/GMT".
4562         * testsuite/std/time/time_zone/sys_info_abbrev.cc: New test.
4563
4564 2024-06-26  Alexandre Oliva  <oliva@adacore.com>
4565             Marc Poulhiès  <poulhies@adacore.com>
4566
4567         * testsuite/lib/dg-options.exp (add_options_for_libatomic):
4568         None for *-*-vxworks*.
4569
4570 2024-06-25  Jonathan Wakely  <jwakely@redhat.com>
4571
4572         * include/bits/valarray_array.h (_Array_default_ctor): Remove.
4573         (__valarray_default_construct): Inline it into here.
4574         (_Array_init_ctor): Remove.
4575         (__valarray_fill_construct): Inline it into here.
4576         (_Array_copy_ctor): Remove.
4577         (__valarray_copy_construct(const T*, const T*, T*)): Inline it
4578         into here.
4579         (__valarray_copy_construct(const T*, size_t, size_t, T*)):
4580         Use _GLIBCXX17_CONSTEXPR for constant condition.
4581
4582 2024-06-25  Jonathan Wakely  <jwakely@redhat.com>
4583
4584         * doc/xml/faq.xml: Replace viewcvs links with cgit links.
4585         * doc/xml/manual/allocator.xml: Likewise.
4586         * doc/xml/manual/mt_allocator.xml: Likewise.
4587         * doc/html/*: Regenerate.
4588
4589 2024-06-22  Gerald Pfeifer  <gerald@pfeifer.com>
4590
4591         * doc/xml/manual/debug.xml: Move gcc.gnu.org link to https.
4592         Ditto for sourceware.org links.
4593         * doc/html/manual/debug.html: Regenerate.
4594
4595 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
4596
4597         PR libstdc++/115497
4598         * include/bits/cpp_type_traits.h (__is_pointer, __is_scalar):
4599         Remove.
4600         (__is_arithmetic): Do not use __is_pointer in the primary
4601         template. Add partial specialization for pointers.
4602
4603 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
4604
4605         PR libstdc++/115497
4606         * include/bits/cpp_type_traits.h (__is_void): Remove.
4607         * include/debug/helper_functions.h (_Distance_traits):
4608         Adjust partial specialization to match void directly, instead of
4609         using __is_void<T>::__type and matching __true_type.
4610
4611 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
4612
4613         PR libstdc++/115497
4614         * include/bits/deque.tcc (__lex_cmp_dit): Replace __is_pointer
4615         class template with __is_pointer(T) built-in.
4616         (__lexicographical_compare_aux1): Likewise.
4617         * include/bits/stl_algobase.h (__equal_aux1): Likewise.
4618         (__lexicographical_compare_aux1): Likewise.
4619
4620 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
4621
4622         PR libstdc++/115497
4623         * include/bits/valarray_array.h (__valarray_default_construct):
4624         Use __is_trivial(_Tp). instead of __is_scalar<_Tp>.
4625
4626 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
4627
4628         PR libstdc++/109150
4629         * include/bits/stl_algobase.h (__fill_a1): Combine the
4630         !__is_scalar and __is_scalar overloads into one and rewrite the
4631         condition used to decide whether to perform the load outside the
4632         loop.
4633         * testsuite/25_algorithms/fill/109150.cc: New test.
4634         * testsuite/25_algorithms/fill_n/109150.cc: New test.
4635
4636 2024-06-21  Matthias Kretz  <m.kretz@gsi.de>
4637
4638         PR libstdc++/115575
4639         * testsuite/experimental/simd/pr115454_find_last_set.cc: Require
4640         avx512f_runtime. Don't memcpy fixed_size masks.
4641
4642 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
4643
4644         * include/bits/stl_uninitialized.h (uninitialized_default_construct)
4645         (uninitialized_default_construct_n, uninitialized_value_construct)
4646         (uninitialized_value_construct_n): Qualify calls to prevent ADL.
4647
4648 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
4649
4650         * include/std/any (any_cast(any*), any_cast(const any*)): Add
4651         static assertion to reject void types, as per LWG 3305.
4652         * testsuite/20_util/any/misc/lwg3305.cc: New test.
4653
4654 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
4655
4656         * include/bits/memory_resource.h (polymorphic_allocator::destroy):
4657         Remove deprecated attribute.
4658
4659 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
4660
4661         * include/backward/backward_warning.h: Adjust comments to
4662         suggest <spanstream> as another alternative to <strstream>.
4663         * include/backward/strstream (strstreambuf, istrstream)
4664         (ostrstream, strstream): Add deprecated attribute.
4665
4666 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
4667
4668         * include/bits/locale_conv.h (wstring_convert): Add deprecated
4669         attribute for C++17 and later.
4670         (wbuffer_convert): Likewise.
4671         * testsuite/22_locale/codecvt/codecvt_utf16/79980.cc: Disable
4672         deprecated warnings.
4673         * testsuite/22_locale/codecvt/codecvt_utf8/79980.cc: Likewise.
4674         * testsuite/22_locale/codecvt/codecvt_utf8_utf16/79511.cc:
4675         Likewise.
4676         * testsuite/22_locale/conversions/buffer/1.cc: Add dg-warning.
4677         * testsuite/22_locale/conversions/buffer/2.cc: Likewise.
4678         * testsuite/22_locale/conversions/buffer/3.cc: Likewise.
4679         * testsuite/22_locale/conversions/buffer/requirements/typedefs.cc:
4680         Likewise.
4681         * testsuite/22_locale/conversions/string/1.cc: Likewise.
4682         * testsuite/22_locale/conversions/string/2.cc: Likewise.
4683         * testsuite/22_locale/conversions/string/3.cc: Likewise.
4684         * testsuite/22_locale/conversions/string/66441.cc: Likewise.
4685         * testsuite/22_locale/conversions/string/requirements/typedefs-2.cc:
4686         Likewise.
4687         * testsuite/22_locale/conversions/string/requirements/typedefs.cc:
4688         Likewise.
4689
4690 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
4691
4692         * include/bits/version.def (chrono): Add cxx11abi = yes.
4693         * include/bits/version.h: Regenerate.
4694         * testsuite/std/time/syn_c++20.cc: Adjust expected value for
4695         the feature test macro.
4696
4697 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
4698
4699         PR libstdc++/115522
4700         * include/std/array (to_array): Workaround the fact that
4701         std::is_trivial is not sufficient to check that a type is
4702         trivially default constructible and assignable.
4703         * testsuite/23_containers/array/creation/115522.cc: New test.
4704
4705 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
4706
4707         * testsuite/util/testsuite_allocator.h (tracker_allocator):
4708         Initialize base class in copy constructor.
4709
4710 2024-06-20  Matthias Kretz  <m.kretz@gsi.de>
4711
4712         PR libstdc++/115454
4713         * include/experimental/bits/simd_x86.h (_S_not_equal_to): Use
4714         neq comparison instead of bitwise negation after eq.
4715         (_S_find_last_set): Clear unused high bits before computing
4716         bit_width.
4717         * testsuite/experimental/simd/pr115454_find_last_set.cc: New
4718         test.
4719
4720 2024-06-19  Jonathan Wakely  <jwakely@redhat.com>
4721
4722         * include/std/future: Adjust whitespace to use tabs for
4723         indentation.
4724
4725 2024-06-19  Jonathan Wakely  <jwakely@redhat.com>
4726
4727         * include/std/future (_State_baseV2::_Setter<R, void>): Add
4728         noexcept to call operator.
4729         (_State_baseV2::_Setter<R, __exception_ptr_tag>): Likewise.
4730
4731 2024-06-19  Jonathan Wakely  <jwakely@redhat.com>
4732
4733         * include/bits/stl_pair.h [__cpp_lib_concepts] (pair()): Add
4734         conditional noexcept.
4735
4736 2024-06-19  Jonathan Wakely  <jwakely@redhat.com>
4737
4738         * include/bits/stl_tempbuf.h (__get_temporary_buffer): Cast
4739         argument to size_t to handle negative values and suppress
4740         -Wsign-compare warning.
4741         (_Temporary_buffer): Move diagnostic pragmas to new location of
4742         call to std::get_temporary_buffer.
4743
4744 2024-06-18  Jonathan Wakely  <jwakely@redhat.com>
4745
4746         * include/bits/cpp_type_traits.h: Fix outdated comment about the
4747         number of standard integer types.
4748
4749 2024-06-14  Jonathan Wakely  <jwakely@redhat.com>
4750
4751         PR libstdc++/110572
4752         * libsupc++/typeinfo (type_info::operator==): Add always_inline
4753         attribute for targets where the ABI requries equality to be
4754         non-inline.
4755         * testsuite/18_support/type_info/110572.cc: New test.
4756
4757 2024-06-14  Jonathan Wakely  <jwakely@redhat.com>
4758
4759         * libsupc++/new_opa.cc [!_GLIBCXX_HOSTED]: Fix declaration of
4760         posix_memalign.
4761
4762 2024-06-13  Alexandre Oliva  <oliva@adacore.com>
4763
4764         PR libstdc++/114359
4765         * testsuite/26_numerics/random/binomial_distribution/114359.cc:
4766         Require cmath.
4767
4768 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
4769
4770         * include/std/type_traits (__add_rval_ref_t): Use
4771         __add_rvalue_reference built-in trait.
4772
4773 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
4774
4775         * include/std/type_traits (__add_lval_ref_t): Use
4776         __add_lvalue_reference built-in trait.
4777
4778 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
4779             Jonathan Wakely  <jwakely@redhat.com>
4780
4781         * include/bits/cpp_type_traits.h (__is_pointer): Use
4782         __is_pointer built-in trait.
4783         * include/std/type_traits (is_pointer): Likewise.  Optimize its
4784         implementation.
4785         (is_pointer_v): Likewise.
4786
4787 2024-06-13  Jonathan Wakely  <jwakely@redhat.com>
4788
4789         * include/bits/ranges_base.h (range_common_reference_t): New
4790         alias template, as per LWG 3860.
4791         * testsuite/std/ranges/range.cc: Check it.
4792
4793 2024-06-13  Jonathan Wakely  <jwakely@redhat.com>
4794
4795         * include/bits/ranges_base.h (const_iterator_t): Change
4796         preprocessor condition to use __glibcxx_ranges_as_const.
4797         (const_sentinel_t, range_const_reference_t): Likewise.
4798         (__access::__possibly_const_range, cbegin, cend, crbegin)
4799         (crend, cdata): Likewise.
4800         * include/bits/stl_iterator.h (iter_const_reference_t)
4801         (basic_const_iterator, const_iterator, const_sentinel)
4802         (make_const_iterator): Likewise.
4803
4804 2024-06-13  Jonathan Wakely  <jwakely@redhat.com>
4805
4806         PR libstdc++/115420
4807         * include/bits/hashtable.h (_Hashtable): Add static_assert to
4808         check that hash function is copy constructible.
4809         * testsuite/23_containers/unordered_map/115420.cc: New test.
4810
4811 2024-06-13  Jonathan Wakely  <jwakely@redhat.com>
4812
4813         PR libstdc++/113376
4814         * include/pstl/pstl_config.h: Use #if instead of #ifdef to test
4815         the _PSTL_USAGE_WARNINGS macro.
4816
4817 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
4818
4819         * include/std/type_traits (is_nothrow_invocable): Use
4820         __is_nothrow_invocable built-in trait.
4821         * testsuite/20_util/is_nothrow_invocable/incomplete_args_neg.cc:
4822         Handle the new error from __is_nothrow_invocable.
4823         * testsuite/20_util/is_nothrow_invocable/incomplete_neg.cc:
4824         Likewise.
4825
4826 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
4827
4828         * include/std/type_traits (is_invocable): Use __is_invocable
4829         built-in trait.
4830         * testsuite/20_util/is_invocable/incomplete_args_neg.cc: Handle
4831         the new error from __is_invocable.
4832         * testsuite/20_util/is_invocable/incomplete_neg.cc: Likewise.
4833
4834 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
4835
4836         * include/std/type_traits (rank): Use __array_rank built-in
4837         trait.
4838         (rank_v): Likewise.
4839
4840 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
4841
4842         * include/std/type_traits (decay): Use __decay built-in trait.
4843
4844 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
4845
4846         * include/std/type_traits (remove_all_extents): Use
4847         __remove_all_extents built-in trait.
4848
4849 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
4850
4851         * include/std/type_traits (remove_extent): Use __remove_extent
4852         built-in trait.
4853
4854 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
4855
4856         * include/std/type_traits (add_pointer): Use __add_pointer
4857         built-in trait.
4858
4859 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
4860
4861         * include/std/type_traits (is_unbounded_array_v): Use
4862         __is_unbounded_array built-in trait.
4863
4864 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
4865
4866         * include/std/type_traits (is_volatile): Use __is_volatile
4867         built-in trait.
4868         (is_volatile_v): Likewise.
4869
4870 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
4871
4872         * include/std/type_traits (is_const): Use __is_const built-in
4873         trait.
4874         (is_const_v): Likewise.
4875
4876 2024-06-12  Alexandre Oliva  <oliva@adacore.com>
4877
4878         * testsuite/26_numerics/headers/cmath/constexpr_std_c++23.cc:
4879         Require cmath.
4880         * testsuite/26_numerics/headers/cmath/functions_std_c++23.cc:
4881         Likewise.
4882         * testsuite/26_numerics/headers/cmath/nextafter_c++23.cc:
4883         Likewise.
4884
4885 2024-06-12  Alexandre Oliva  <oliva@adacore.com>
4886
4887         * testsuite/20_util/from_chars/8.cc: Skip float128_t testing
4888         on aarch64-rtems*.
4889         * testsuite/20_util/to_chars/float128_c++23.cc: Xfail run on
4890         aarch64-rtems*.
4891
4892 2024-06-12  Jonathan Wakely  <jwakely@redhat.com>
4893
4894         PR libstdc++/115399
4895         * include/tr2/dynamic_bitset (operator>>=): Remove redundant
4896         call to _M_do_sanitize.
4897         * include/tr2/dynamic_bitset.tcc (_M_do_left_shift): Zero out
4898         low bits in words that should no longer be populated.
4899         (_M_do_right_shift): Likewise for high bits.
4900         * testsuite/tr2/dynamic_bitset/pr115399.cc: New test.
4901
4902 2024-06-12  Jonathan Wakely  <jwakely@redhat.com>
4903
4904         * include/bits/hashtable.h (_Hashtable::clear): Do not use
4905         memset to zero out bucket pointers.
4906         (_Hashtable::_M_assign_elements): Likewise.
4907
4908 2024-06-11  Jonathan Wakely  <jwakely@redhat.com>
4909
4910         * include/std/chrono (leap_seconds): Add comment.
4911         * testsuite/std/time/leap_seconds/io.cc: New test.
4912
4913 2024-06-10  François Dumont  <fdumont@gcc.gnu.org>
4914
4915         * include/bits/hashtable.h (~_Hashtable()): Replace clear call with
4916         a _M_deallocate_nodes call.
4917
4918 2024-06-08  Deev Patel  <dkp10000@gmail.com>
4919             Jonathan Wakely  <jwakely@redhat.com>
4920
4921         * include/bits/atomic_base.h (__atomic_impl::__clear_padding):
4922         Add missing constexpr specifier.
4923         * testsuite/29_atomics/atomic_float/constinit.cc: New test.
4924
4925 2024-06-08  Michael Levine  <mlevine55@bloomberg.net>
4926
4927         PR libstdc++/108760
4928         * include/bits/ranges_algo.h (ranges::out_value_result):
4929         Move to <bits/ranges_algobase.h>.
4930         (ranges::iota_result, ranges::__iota_fn, ranges::iota): Move to
4931         <numeric>.
4932         * include/bits/ranges_algobase.h (ranges::out_value_result):
4933         Move to here.
4934         * include/std/numeric (ranges::iota_result, ranges::__iota_fn)
4935         (ranges::iota): Move to here.
4936         * testsuite/25_algorithms/iota/1.cc: Renamed to ...
4937         * testsuite/26_numerics/iota/2.cc: ... here.
4938
4939 2024-06-08  Jonathan Wakely  <jwakely@redhat.com>
4940
4941         * include/std/algorithm: Define __glibcxx_want_ranges.
4942         * testsuite/25_algorithms/headers/algorithm/synopsis.cc: Check
4943         feature test macro in C++20 mode.
4944
4945 2024-06-07  Jonathan Wakely  <jwakely@redhat.com>
4946
4947         * include/bits/ranges_algobase.h: Include <bits/stl_algobase.h>.
4948
4949 2024-06-07  Alexandre Oliva  <oliva@adacore.com>
4950
4951         * include/std/variant: Drop obsolete workaround.
4952
4953 2024-06-07  Jonathan Wakely  <jwakely@redhat.com>
4954
4955         * include/bits/ptr_traits.h (to_address): Optimize.
4956         * testsuite/20_util/to_address/1_neg.cc: Adjust dg-error text.
4957
4958 2024-06-06  Alexandre Oliva  <oliva@adacore.com>
4959
4960         * include/bits/c++config (_GLIBCXX_CLANG): Define or undefine.
4961         * include/bits/locale_facets_nonio.tcc: Test for it.
4962         * include/bits/stl_bvector.h: Likewise.
4963         * include/c_compatibility/stdatomic.h: Likewise.
4964         * include/experimental/bits/simd.h: Likewise.
4965         * include/experimental/bits/simd_builtin.h: Likewise.
4966         * include/experimental/bits/simd_detail.h: Likewise.
4967         * include/experimental/bits/simd_x86.h: Likewise.
4968         * include/experimental/simd: Likewise.
4969         * include/std/complex: Likewise.
4970         * include/std/ranges: Likewise.
4971         * include/std/variant: Likewise.
4972         * include/pstl/pstl_config.h: Likewise.
4973
4974 2024-06-05  Gerald Pfeifer  <gerald@pfeifer.com>
4975
4976         * doc/xml/faq.xml: Move gcc.gnu.org to https.
4977         * doc/html/faq.html: Regenerate.
4978
4979 2024-06-04  Jonathan Wakely  <jwakely@redhat.com>
4980
4981         PR libstdc++/115335
4982         * include/std/span (span::at): Guard with feature test macro.
4983
4984 2024-06-04  Matthias Kretz  <m.kretz@gsi.de>
4985
4986         PR libstdc++/115308
4987         * include/experimental/bits/simd.h (__int_for_sizeof): Remove
4988         special cases for __clang__.
4989         (_SimdWrapper): Change constructor overload set to allow
4990         conversion from vector types with integral conversions via bit
4991         reinterpretation.
4992
4993 2024-06-03  Jonathan Wakely  <jwakely@redhat.com>
4994
4995         * include/std/stacktrace (basic_stacktrace::_Impl::_M_allocate):
4996         Use __detail::__get_temporary_buffer.
4997         (basic_stacktrace::_Impl::_M_deallocate): Use
4998         __detail::__return_temporary_buffer.
4999
5000 2024-06-03  Jonathan Wakely  <jwakely@redhat.com>
5001
5002         PR libstdc++/105258
5003         * include/bits/stl_tempbuf.h (__detail::__get_temporary_buffer):
5004         New function to do allocation for get_temporary_buffer, with
5005         extended alignment support.
5006         (__detail::__return_temporary_buffer): Support extended
5007         alignment.
5008         (get_temporary_buffer): Use __get_temporary_buffer.
5009         (return_temporary_buffer): Support extended alignment. Add
5010         deprecated attribute.
5011         (_Temporary_buffer): Move allocation and deallocation into a
5012         subobject and remove try-catch block in constructor.
5013         (__uninitialized_construct_buf): Use argument deduction for
5014         value type.
5015         * testsuite/20_util/temporary_buffer.cc: Add dg-warning for new
5016         deprecated warning.
5017         * testsuite/25_algorithms/stable_sort/overaligned.cc: New test.
5018
5019 2024-06-03  François Dumont  <frs.dumont@gmail.com>
5020
5021         PR libstdc++/109849
5022         * include/bits/vector.tcc
5023         (std::vector<>::_M_range_insert(iterator, _FwdIt, _FwdIt,
5024         forward_iterator_tag))[__cplusplus < 201103L]: Add __builtin_unreachable
5025         expression to tell the compiler that the allocated buffer is large enough to
5026         receive current elements plus the elements of the range to insert.
5027
5028 2024-06-03  Jonathan Wakely  <jwakely@redhat.com>
5029
5030         * include/std/string_view (starts_with(basic_string_view)):
5031         Compare lengths first and then call traits_type::compare
5032         directly.
5033
5034 2024-06-02  Gerald Pfeifer  <gerald@pfeifer.com>
5035
5036         * doc/xml/api.xml: Move gcc.gnu.org links to https.
5037         * doc/html/api.html: Regenerate.
5038
5039 2024-06-01  Jonathan Wakely  <jwakely@redhat.com>
5040
5041         PR libstdc++/115269
5042         * doc/xml/manual/using.xml: Replace link to gcc-4.3.2 docs.
5043         Replace list of -std=... options with a single entry for -std.
5044         * doc/html/manual/using.html: Regenerate.
5045
5046 2024-05-30  Alexandre Oliva  <oliva@adacore.com>
5047
5048         * configure.ac [*-*-rtems*]: Set chdir, chmod and mkdir as
5049         available.
5050         * configure: Rebuilt.
5051
5052 2024-05-29  François Dumont  <fdumont@gcc.gnu.org>
5053
5054         * include/bits/vector.tcc (_Guard): Move all the nested duplicated class...
5055         * include/bits/stl_vector.h (_Guard_alloc): ...here and rename.
5056         (_M_allocate_and_copy): Use latter.
5057         (_M_initialize_dispatch): Small code simplification.
5058         (_M_range_initialize): Likewise and set _M_finish first from the result
5059         of __uninitialize_fill_n_a that can throw.
5060
5061 2024-05-29  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
5062
5063         PR libstdc++/111641
5064         * src/libbacktrace/Makefile.am (AM_CFLAGS): Add -funwind-tables.
5065         * src/libbacktrace/Makefile.in: Regenerate.
5066         * testsuite/19_diagnostics/stacktrace/current.cc (dg-options): Add
5067         -funwind-tables.
5068         * testsuite/19_diagnostics/stacktrace/entry.cc: Likewise.
5069         * testsuite/19_diagnostics/stacktrace/hash.cc: Likewise.
5070         * testsuite/19_diagnostics/stacktrace/output.cc: Likewise.
5071         * testsuite/19_diagnostics/stacktrace/stacktrace.cc: Likewise.
5072
5073 2024-05-29  Matthias Kretz  <m.kretz@gsi.de>
5074
5075         PR libstdc++/115247
5076         * include/experimental/bits/simd.h (__as_vector): Don't use
5077         vector_size(8) on __i386__.
5078         (__vec_shuffle): Never return MMX vectors, widen to 16 bytes
5079         instead.
5080         (concat): Fix padding calculation to pick up widening logic from
5081         __as_vector.
5082
5083 2024-05-23  Patrick Palka  <ppalka@redhat.com>
5084
5085         * include/bits/version.def (ranges_concat): Define.
5086         * include/bits/version.h: Regenerate.
5087         * include/std/ranges (__detail::__concat_reference_t): Define
5088         for C++26.
5089         (__detail::__concat_value_t): Likewise.
5090         (__detail::__concat_rvalue_reference_t): Likewise.
5091         (__detail::__concat_indirectly_readable_impl): Likewise.
5092         (__detail::__concat_indirectly_readable): Likewise.
5093         (__detail::__concatable): Likewise.
5094         (__detail::__all_but_last_common): Likewise.
5095         (__detail::__concat_is_random_access): Likewise.
5096         (__detail::__concat_is_bidirectional): Likewise.
5097         (__detail::__last_is_common): Likewise.
5098         (concat_view): Likewise.
5099         (__detail::__concat_view_iter_cat): Likewise.
5100         (concat_view::iterator): Likewise.
5101         (views::__detail::__can_concat_view): Likewise.
5102         (views::_Concat, views::concat): Likewise.
5103         * testsuite/std/ranges/concat/1.cc: New test.
5104
5105 2024-05-22  Jonathan Wakely  <jwakely@redhat.com>
5106
5107         * include/bits/locale_classes.h (locale::combine)
5108         (locale::name, locale::operator==, locale::operator!=)
5109         (locale::operator(), locale::classic): Add nodiscard
5110         attribute.
5111         * include/bits/locale_classes.tcc (has_facet, use_facet):
5112         Likewise.
5113         * testsuite/22_locale/locale/cons/12438.cc: Add dg-warning for
5114         nodiscard diagnostic.
5115         * testsuite/22_locale/locale/cons/2.cc: Cast use_facet
5116         expression to void, to suppress diagnostic.
5117         * testsuite/22_locale/locale/cons/unicode.cc: Likewise.
5118         * testsuite/22_locale/locale/operations/2.cc: Add dg-warning.
5119
5120 2024-05-22  Jonathan Wakely  <jwakely@redhat.com>
5121
5122         PR libstdc++/108323
5123         * include/bits/locale_classes.tcc (locale(const locale&, Facet*)):
5124         Return a copy of the first argument when the facet pointer is
5125         null, as per LWG 2295.
5126         (locale::combine): Ensure the result is unnamed.
5127         * src/c++11/localename.cc (_M_replace_categories): Ignore
5128         whether the second locale has a name when cat == none, as per
5129         LWG 3676.
5130         * src/c++98/locale.cc (_M_install_facet): Use __builtin_expect
5131         to predict that the facet pointer is non-null.
5132         * testsuite/22_locale/locale/cons/names.cc: New test.
5133
5134 2024-05-22  Jonathan Wakely  <jwakely@redhat.com>
5135
5136         PR libstdc++/114940
5137         * include/bits/version.def (generator): Depend on
5138         __cpp_sized_deallocation.
5139         * include/bits/version.h: Regenerate.
5140         * include/std/stacktrace (_GLIBCXX_SIZED_DELETE): New macro.
5141         (basic_stacktrace::_Impl::_M_deallocate): Use it.
5142
5143 2024-05-22  Jonathan Wakely  <jwakely@redhat.com>
5144
5145         PR libstdc++/115099
5146         * include/bits/std_thread.h: Declare formatter as friend of
5147         thread::id.
5148         * include/std/thread (operator<<): Convert non-void pointers to
5149         void pointers for output.
5150         (formatter): Add constraint that thread::native_handle_type is a
5151         pointer or integer.
5152         (formatter::format): Reimplement without basic_ostringstream.
5153         * testsuite/30_threads/thread/id/output.cc: Check output
5154         compiles before <sstream> has been included.
5155
5156 2024-05-22  Jonathan Wakely  <jwakely@redhat.com>
5157
5158         PR libstdc++/115145
5159         * include/std/variant (operator==, operator!=, operator<)
5160         (operator<=, operator>, operator>=): Add trailing-return-type to
5161         lambda expressions to trigger conversion to bool.
5162         * testsuite/20_util/variant/relops/115145.cc: New test.
5163
5164 2024-05-17  Björn Schäpers  <bjoern@hazardy.de>
5165
5166         * acinclude.m4 (GLIBCXX_ENABLE_BACKTACE): Add check for
5167         tlhelp32.h, matching libbacktrace.
5168         * config.h.in: Regenerate.
5169         * configure: Regenerate.
5170
5171 2024-05-17  Jonathan Wakely  <jwakely@redhat.com>
5172
5173         PR libstdc++/115119
5174         * include/bits/unicode.h (_Iterator::operator++(int)): Fix typo
5175         in increment expression.
5176         * testsuite/ext/unicode/grapheme_view.cc: Check post-increment
5177         on view's iterator.
5178
5179 2024-05-15  Jonathan Wakely  <jwakely@redhat.com>
5180
5181         PR libstdc++/77704
5182         * include/bits/basic_ios.h (basic_ios::fill()): Do not modify
5183         _M_fill and _M_fill_init in a const member function.
5184         (basic_ios::fill(char_type)): Use _M_fill directly instead of
5185         calling fill(). Set _M_fill_init to true.
5186         * include/bits/basic_ios.tcc (basic_ios::init): Set _M_fill and
5187         _M_fill_init here instead.
5188         * testsuite/27_io/basic_ios/fill/char/1.cc: New test.
5189         * testsuite/27_io/basic_ios/fill/wchar_t/1.cc: New test.
5190
5191 2024-05-15  Jonathan Wakely  <jwakely@redhat.com>
5192
5193         * include/std/variant (__detail::__variant::__compare): New
5194         function template.
5195         (operator==, operator!=, operator<, operator>, operator<=)
5196         (operator>=): Replace macro definition with handwritten function
5197         calling __detail::__variant::__compare.
5198         (operator<=>): Call __detail::__variant::__compare.
5199
5200 2024-05-15  Jonathan Wakely  <jwakely@redhat.com>
5201
5202         PR libstdc++/89624
5203         * include/bits/atomic_base.h (memory_order): Use int as
5204         underlying type.
5205         * testsuite/29_atomics/atomic/89624.cc: New test.
5206
5207 2024-05-14  Jonathan Wakely  <jwakely@redhat.com>
5208
5209         PR libstdc++/115015
5210         * src/c++23/print.cc (__open_terminal(streambuf*)) [!__cpp_rtti]:
5211         Do not use dynamic_cast.
5212
5213 2024-05-14  Jonathan Wakely  <jwakely@redhat.com>
5214
5215         * doc/xml/manual/strings.xml: Clarify that GCC 4.5 added
5216         std::string::shrink_to_fit.
5217         * doc/html/manual/strings.html: Regenerate.
5218
5219 2024-05-14  Jonathan Wakely  <jwakely@redhat.com>
5220
5221         PR libstdc++/115063
5222         * include/std/stacktrace (basic_stacktrace::max_size): Fix typo
5223         in reference to _M_alloc member.
5224         * testsuite/19_diagnostics/stacktrace/stacktrace.cc: Check
5225         max_size() compiles.
5226
5227 2024-05-13  Matthias Kretz  <m.kretz@gsi.de>
5228
5229         PR libstdc++/114958
5230         * include/experimental/bits/simd.h (__as_vector): Return scalar
5231         simd as one-element vector. Return vector from single-vector
5232         fixed_size simd.
5233         (__vec_shuffle): New.
5234         (__extract_part): Adjust return type signature.
5235         (split): Use __extract_part for any split into non-fixed_size
5236         simds.
5237         (concat): If the return type stores a single vector, use
5238         __vec_shuffle (which calls __builtin_shufflevector) to produce
5239         the return value.
5240         * include/experimental/bits/simd_builtin.h
5241         (__shift_elements_right): Removed.
5242         (__extract_part): Return single elements directly. Use
5243         __vec_shuffle (which calls __builtin_shufflevector) to for all
5244         non-trivial cases.
5245         * include/experimental/bits/simd_fixed_size.h (__extract_part):
5246         Return single elements directly.
5247         * testsuite/experimental/simd/pr114958.cc: New test.
5248
5249 2024-05-07  Jonathan Wakely  <jwakely@redhat.com>
5250
5251         * include/bits/unicode.h (_Unicode_view::_M_read_utf8): Ensure
5252         count of characters consumed is correct when the end of the
5253         input is reached unexpectedly.
5254         * testsuite/ext/unicode/view.cc: Test incomplete UTF-8
5255         sequences.
5256
5257 2024-05-07  Jonathan Wakely  <jwakely@redhat.com>
5258
5259         PR libstdc++/114866
5260         * include/bits/out_ptr.h [!_GLIBCXX_HOSTED]: Don't refer to
5261         shared_ptr, __shared_ptr or __is_shred_ptr.
5262         * testsuite/20_util/headers/memory/114866.cc: New test.
5263
5264 2024-05-07  Jonathan Wakely  <jwakely@redhat.com>
5265
5266         * include/std/variant (_VARIANT_RELATION_FUNCTION_TEMPLATE):
5267         Simplify.
5268
5269 2024-05-07  Jonathan Wakely  <jwakely@redhat.com>
5270
5271         * include/bits/stl_pair.h (operator==): Add constraint.
5272         * include/bits/version.def (constrained_equality): Define.
5273         * include/bits/version.h: Regenerate.
5274         * include/std/optional: Define feature test macro.
5275         (__optional_rep_op_t): Use is_convertible_v instead of
5276         is_convertible.
5277         * include/std/tuple: Define feature test macro.
5278         (operator==, __tuple_cmp, operator<=>): Reimplement C++20
5279         comparisons using lambdas. Add constraints.
5280         * include/std/utility: Define feature test macro.
5281         * include/std/variant: Define feature test macro.
5282         (_VARIANT_RELATION_FUNCTION_TEMPLATE): Add constraints.
5283         (variant): Remove unnecessary friend declarations for comparison
5284         operators.
5285         * testsuite/20_util/optional/relops/constrained.cc: New test.
5286         * testsuite/20_util/pair/comparison_operators/constrained.cc:
5287         New test.
5288         * testsuite/20_util/tuple/comparison_operators/constrained.cc:
5289         New test.
5290         * testsuite/20_util/variant/relops/constrained.cc: New test.
5291         * testsuite/20_util/tuple/comparison_operators/overloaded.cc:
5292         Disable for C++20 and later.
5293         * testsuite/20_util/tuple/comparison_operators/overloaded2.cc:
5294         Remove dg-error line for target c++20.
5295
5296 2024-05-07  Jonathan Wakely  <jwakely@redhat.com>
5297
5298         * include/backward/auto_ptr.h: Use https for URL in comment.
5299         * include/bits/basic_ios.h: Likewise.
5300         * include/std/iostream: Likewise.
5301
5302 2024-05-07  Jonathan Wakely  <jwakely@redhat.com>
5303
5304         * testsuite/util/testsuite_abi.cc: Update latest versions to
5305         new versions that should be used in future.
5306
5307 2024-05-07  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
5308
5309         * src/Makefile.am [ENABLE_SYMVERS_SUN]
5310         (libstdc++-symbols.ver-sun): Pass $(libstdc___la_OBJECTS),
5311         $(libstdc___la_LIBADD) to make_sunver.pl unmodified.
5312         * src/Makefile.in: Regenerate.
5313
5314 2024-05-07  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
5315
5316         * testsuite/lib/dg-options.exp (add_options_for_net_ts)
5317         <*-*-solaris2*>: Don't link with -lsocket -lnsl.
5318
5319 2024-05-03  Andreas Schwab  <schwab@linux-m68k.org>
5320
5321         * config/abi/post/powerpc-linux-gnu/baseline_symbols.txt: Update.
5322         * config/abi/post/powerpc64-linux-gnu/32/baseline_symbols.txt: Update.
5323
5324 2024-05-01  Jonathan Wakely  <jwakely@redhat.com>
5325
5326         PR libstdc++/114891
5327         * include/std/generator: Check feature test macro before using
5328         is_pointer_interconvertible_v.
5329
5330 2024-04-30  Christophe Lyon  <christophe.lyon@linaro.org>
5331
5332         * testsuite/lib/gdb-test.exp (gdb-test): Fix regexp.  Quote
5333         newlines in logs.
5334
5335 2024-04-29  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
5336
5337         Backported from master:
5338         2024-04-29  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
5339
5340         * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
5341         * config/abi/post/i386-solaris/amd64/baseline_symbols.txt:
5342         Likewise.
5343         * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
5344         * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
5345         Likewise.
5346
5347 2024-04-29  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
5348
5349         Backported from master:
5350         2024-04-29  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
5351
5352         * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
5353         * config/abi/post/i386-solaris/amd64/baseline_symbols.txt:
5354         Likewise.
5355         * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
5356         * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
5357         Likewise.
5358
5359 2024-04-26  Jonathan Wakely  <jwakely@redhat.com>
5360
5361         PR libstdc++/114863
5362         * include/std/format (__formatter_fp::format): Only use
5363         _M_localized for finite values.
5364         * testsuite/std/format/functions/format.cc: Check localized
5365         formatting of NaN and initiny.
5366
5367 2024-04-26  Jonathan Wakely  <jwakely@redhat.com>
5368
5369         * doc/html/manual/status.html: Regenerate.
5370         * doc/xml/manual/status_cxx1998.xml: Adjust whitespace.
5371         * doc/xml/manual/status_cxx2011.xml: Likewise.
5372         * doc/xml/manual/status_cxx2014.xml: Likewise.
5373         * doc/xml/manual/status_cxx2017.xml: Likewise.
5374         * doc/xml/manual/status_cxx2020.xml: Likewise.
5375         * doc/xml/manual/status_cxx2023.xml: Likewise.
5376         * doc/xml/manual/status_cxxtr1.xml: Likewise.
5377         * doc/xml/manual/status_cxxtr24733.xml: Likewise.
5378
5379 2024-04-25  Jonathan Wakely  <jwakely@redhat.com>
5380
5381         * scripts/run_doxygen: Rename man pages for nested types.
5382
5383 2024-04-25  Jonathan Wakely  <jwakely@redhat.com>
5384
5385         * include/std/chrono (tzdb_list): Fix typo in Doxygen comment.
5386
5387 2024-04-25  Jonathan Wakely  <jwakely@redhat.com>
5388
5389         * scripts/run_doxygen: Adjust sed pattern to match '\fR' for
5390         new man output that Doxygen 1.10 generates.
5391
5392 2024-04-25  Jonathan Wakely  <jwakely@redhat.com>
5393
5394         * doc/doxygen/stdheader.cc (init_map): Add missing headers.
5395         * doc/doxygen/user.cfg.in (EXCLUDE): Exclude generated files for
5396         std::format and std::text_encoding.
5397
5398 2024-04-25  Jonathan Wakely  <jwakely@redhat.com>
5399
5400         * include/std/variant: Add comment to #include.
5401
5402 2024-04-22  Matthias Kretz  <m.kretz@gsi.de>
5403
5404         PR libstdc++/114803
5405         * include/experimental/bits/simd_builtin.h
5406         (_SimdBase2::operator __vector_type_t): There is no __builtin()
5407         function in _SimdWrapper, instead use its conversion operator.
5408         * testsuite/experimental/simd/pr114803_vecbuiltin_cvt.cc: New
5409         test.
5410
5411 2024-04-22  Matthias Kretz  <m.kretz@gsi.de>
5412
5413         * include/experimental/bits/simd.h: Ignore -Wnarrowing for
5414         arm_neon.h.
5415         (__int_for_sizeof): Replace tautological compare with checking
5416         for invalid template parameter value.
5417         * include/experimental/bits/simd_builtin.h (__extract_part):
5418         Remove tautological compare by combining two static_assert.
5419
5420 2024-04-22  Jakub Jelinek  <jakub@redhat.com>
5421
5422         * testsuite/17_intro/names.cc (d, f): Undefine on s390*-linux*.
5423         * testsuite/17_intro/headers/c++1998/all_attributes.cc (packed): Don't
5424         define on s390.
5425         * testsuite/17_intro/headers/c++2011/all_attributes.cc (packed):
5426         Likewise.
5427         * testsuite/17_intro/headers/c++2014/all_attributes.cc (packed):
5428         Likewise.
5429         * testsuite/17_intro/headers/c++2017/all_attributes.cc (packed):
5430         Likewise.
5431         * testsuite/17_intro/headers/c++2020/all_attributes.cc (packed):
5432         Likewise.
5433
5434 2024-04-19  Jonathan Wakely  <jwakely@redhat.com>
5435
5436         * include/bits/refwrap.h (operator<=>): Simplify constraints.
5437
5438 2024-04-19  Jonathan Wakely  <jwakely@redhat.com>
5439
5440         PR libstdc++/114770
5441         * src/c++20/tzdb.cc (do_locate_zone): Support links that have
5442         another link as their target.
5443         * testsuite/std/time/tzdb/1.cc: Check that all zones and links
5444         can be found by locate_zone.
5445         * testsuite/std/time/tzdb/links.cc: New test.
5446
5447 2024-04-18  Alexandre Oliva  <oliva@adacore.com>
5448
5449         * testsuite/29_atomics/atomic/compare_exchange_padding.cc:
5450         Disable SRA.
5451
5452 2024-04-18  Alexandre Oliva  <oliva@adacore.com>
5453
5454         * testsuite/20_util/from_chars/8.cc: Skip float128_t testing
5455         on aarch64-vxworks.
5456         * testsuite/20_util/to_chars/float128_c++23.cc: Xfail run on
5457         aarch64-vxworks.
5458
5459 2024-04-18  Alexandre Oliva  <oliva@adacore.com>
5460
5461         * src/c++20/tzdb.cc (__gnu_cxx::zoneinfo_dir_override): Define
5462         on VxWorks non-RTP.
5463
5464 2024-04-17  Jonathan Wakely  <jwakely@redhat.com>
5465
5466         * include/std/ostream (println(ostream&)): Define new overload.
5467         * include/std/print (println(FILE*), println()): Likewise.
5468         * testsuite/27_io/basic_ostream/print/2.cc: New test.
5469         * testsuite/27_io/print/1.cc: Remove unused header.
5470         * testsuite/27_io/print/3.cc: New test.
5471
5472 2024-04-17  Matthias Kretz  <m.kretz@gsi.de>
5473
5474         * include/experimental/bits/numeric_traits.h: Add include guard.
5475
5476 2024-04-17  Matthias Kretz  <m.kretz@gsi.de>
5477
5478         PR libstdc++/114750
5479         * include/experimental/bits/simd_builtin.h
5480         (_SimdImplBuiltin::_S_load, _S_store): Fall back to copying
5481         scalars if the memory type cannot be vectorized for the target.
5482
5483 2024-04-16  Jonathan Wakely  <jwakely@redhat.com>
5484
5485         * config/locale/dragonfly/numeric_members.cc: Fix typos in
5486         comments.
5487         * config/locale/gnu/numeric_members.cc: Likewise.
5488
5489 2024-04-15  Jonathan Wakely  <jwakely@redhat.com>
5490
5491         * doc/xml/manual/abi.xml: Replace "<next>" with "14.1.0".
5492         * doc/html/manual/abi.html: Regenerate.
5493
5494 2024-04-15  Jonathan Wakely  <jwakely@redhat.com>
5495
5496         * include/bits/refwrap.h (reference_wrapper): Add comparison
5497         operators as proposed by P2944R3.
5498         * include/bits/version.def (reference_wrapper): Define.
5499         * include/bits/version.h: Regenerate.
5500         * include/std/functional: Enable feature test macro.
5501         * testsuite/20_util/reference_wrapper/compare.cc: New test.
5502
5503 2024-04-15  Jonathan Wakely  <jwakely@redhat.com>
5504
5505         PR libstdc++/113386
5506         * include/bits/stl_pair.h (operator==, operator<=>): Support
5507         heterogeneous comparisons, as per LWG 3865.
5508         * testsuite/20_util/pair/comparison_operators/lwg3865.cc: New
5509         test.
5510
5511 2024-04-15  Jonathan Wakely  <jwakely@redhat.com>
5512
5513         PR libstdc++/93672
5514         * src/c++98/istream.cc (istream::ignore(streamsize, int_type)):
5515         Treat all negative delimiter values as eof().
5516         * testsuite/27_io/basic_istream/ignore/char/93672.cc: New test.
5517         * testsuite/27_io/basic_istream/ignore/wchar_t/93672.cc: New
5518         test.
5519
5520 2024-04-15  Andreas Schwab  <schwab@suse.de>
5521
5522         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
5523
5524 2024-04-13  H.J. Lu  <hjl.tools@gmail.com>
5525
5526         * config/abi/post/x86_64-linux-gnu/x32/baseline_symbols.txt:
5527         Updated.
5528
5529 2024-04-11  Jakub Jelinek  <jakub@redhat.com>
5530
5531         * doc/xml/manual/abi.xml: Add latest library versions.
5532         * doc/html/manual/abi.html: Regenerate.
5533
5534 2024-04-11  Jakub Jelinek  <jakub@redhat.com>
5535
5536         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
5537         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
5538         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
5539         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
5540         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
5541         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
5542         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
5543         * config/abi/post/powerpc64le-linux-gnu/baseline_symbols.txt: Update.
5544         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
5545
5546 2024-04-11  Jonathan Wakely  <jwakely@redhat.com>
5547
5548         PR libstdc++/114692
5549         * config/abi/pre/gnu.ver (GLIBCXX_3.4.32): Move new exports for
5550         __basic_file::native_handle to ...
5551         (GLIBCXX_3.4.33): ... here. Adjust to not match wchar_t
5552         specialization, which isn't used.
5553         * testsuite/util/testsuite_abi.cc: Add GLIBCXX_3.4.33 and update
5554         latest version check.
5555
5556 2024-04-11  Jakub Jelinek  <jakub@redhat.com>
5557
5558         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
5559         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
5560         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
5561         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
5562         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
5563         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
5564         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
5565         * config/abi/post/powerpc64le-linux-gnu/baseline_symbols.txt: Update.
5566         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
5567
5568 2024-04-10  Jonathan Wakely  <jwakely@redhat.com>
5569
5570         * testsuite/27_io/manipulators/extended/get_time/char/2.cc:
5571         Adjust input string so that it matches %a with or without a
5572         trailing period.
5573         * testsuite/std/time/year_month_day/io.cc: Adjust expected
5574         format for %x in the fr_FR locale.
5575
5576 2024-04-10  Jonathan Wakely  <jwakely@redhat.com>
5577
5578         * src/c++17/fs_ops.cc (remove_all) [__FreeBSD__ || __DragonFly__]:
5579         Check for EMLINK as well as ELOOP.
5580         [__NetBSD__]: Check for EFTYPE as well as ELOOP.
5581
5582 2024-04-09  Jonathan Wakely  <jwakely@redhat.com>
5583
5584         PR libstdc++/114633
5585         * include/bits/chrono_io.h (_Parser::operator()) <'S'>: Use
5586         stream extraction if std::from_chars is not available.
5587
5588 2024-04-08  Jonathan Wakely  <jwakely@redhat.com>
5589
5590         PR libstdc++/114519
5591         * include/bits/unicode.h (_Utf8_view) [!__cpp_char8_t]: Define
5592         using char instead of char8_t.
5593         * testsuite/ext/unicode/view.cc: Use u8""sv literals to create
5594         string views, instead of std::u8string_view.
5595
5596 2024-04-08  Jonathan Wakely  <jwakely@redhat.com>
5597
5598         * testsuite/20_util/integer_comparisons/equal_neg.cc: Use
5599         no-opts selector for errors that depend on -fchar8_t.
5600         * testsuite/20_util/integer_comparisons/greater_equal_neg.cc:
5601         Likewise.
5602         * testsuite/20_util/integer_comparisons/greater_neg.cc:
5603         Likewise.
5604         * testsuite/20_util/integer_comparisons/in_range_neg.cc:
5605         Likewise.
5606         * testsuite/20_util/integer_comparisons/less_equal_neg.cc:
5607         Likewise.
5608         * testsuite/20_util/integer_comparisons/less_neg.cc: Likewise.
5609         * testsuite/20_util/integer_comparisons/not_equal_neg.cc:
5610         Likewise.
5611         * testsuite/21_strings/basic_string/hash/hash_char8_t.cc: Skip
5612         if -fno-char8_t is used.
5613         * testsuite/21_strings/headers/cuchar/functions_std_cxx20.cc:
5614         Likewise.
5615         * testsuite/27_io/basic_ostream/inserters_character/char/deleted.cc:
5616         Likewise.
5617         * testsuite/27_io/basic_ostream/inserters_character/wchar_t/deleted.cc:
5618         Likewise.
5619         * testsuite/27_io/filesystem/path/factory/u8path-depr.cc: Use
5620         char for u8 literal if char8_t is not available.
5621         * testsuite/27_io/headers/iosfwd/synopsis.cc: Check
5622         __cpp_char8_t.
5623         * testsuite/29_atomics/atomic_integral/wait_notify.cc: Likewise.
5624         * testsuite/29_atomics/headers/atomic/types_std_c++20_neg.cc:
5625         Remove check for _GLIBCXX_USE_CHAR8_T.
5626
5627 2024-04-08  Jonathan Wakely  <jwakely@redhat.com>
5628
5629         * testsuite/20_util/from_chars/1_neg.cc: Add char8_t cases,
5630         using a struct of that name if -fno-char8_t is active.
5631         * testsuite/20_util/from_chars/1_c++20_neg.cc: Removed.
5632
5633 2024-04-03  Jonathan Wakely  <jwakely@redhat.com>
5634
5635         PR libstdc++/104606
5636         * include/std/optional (operator<=>(const optional<T>&, const U&)):
5637         Reverse order of three_way_comparable_with template arguments.
5638         * testsuite/20_util/optional/relops/104606.cc: New test.
5639
5640 2024-04-02  Jonathan Wakely  <jwakely@redhat.com>
5641
5642         PR libstdc++/114519
5643         * include/bits/unicode.h (_Utf8_view): Guard with check for
5644         char8_t being enabled.
5645         (__literal_encoding_is_unicode): Guard use of char8_t with check
5646         for it being enabled.
5647         * testsuite/std/format/functions/114519.cc: New test.
5648
5649 2024-04-02  Patrick Palka  <ppalka@redhat.com>
5650
5651         * include/std/ranges (ranges::__detail::_Empty): Rename to ...
5652         (ranges::__detail::_Absent): ... this.  Turn into a template
5653         parameterized by the absent type _Tp and discriminator _Disc.
5654         (ranges::__detail::__maybe_present_t): Add an optional
5655         discriminator parameter.
5656         (slide_view::_M_cached_begin): Pass a discriminator argument to
5657         __maybe_present_t.
5658         (slide_view::_M_cached_end): Likewise.
5659         * testsuite/std/ranges/adaptors/sizeof.cc: Verify the size of
5660         slide_view<V> is 3 instead 4 pointers.
5661
5662 2024-04-02  Jakub Jelinek  <jakub@redhat.com>
5663
5664         * acinclude.m4: Fix duplicated words; file file -> file can.
5665         * configure.host: Fix duplicated words; the the -> the.
5666
5667 2024-03-29  Arsen Arsenović  <arsen@aarsen.me>
5668
5669         * testsuite/24_iterators/range_generators/01.cc: Drop GCC
5670         Runtime Library Exception.
5671         * testsuite/24_iterators/range_generators/02.cc: Drop GCC
5672         Runtime Library Exception.
5673         * testsuite/24_iterators/range_generators/copy.cc: Drop GCC
5674         Runtime Library Exception.
5675         * testsuite/24_iterators/range_generators/except.cc: Drop GCC
5676         Runtime Library Exception.
5677         * testsuite/24_iterators/range_generators/subrange.cc: Drop GCC
5678         Runtime Library Exception.
5679         * testsuite/24_iterators/range_generators/synopsis.cc: Drop GCC
5680         Runtime Library Exception.
5681         * testsuite/24_iterators/range_generators/iter_deref_return.cc:
5682         Drop GCC Runtime Library Exception from the "You should have
5683         received a copy" paragraph.
5684
5685 2024-03-27  Matthias Kretz  <m.kretz@gsi.de>
5686
5687         * include/experimental/bits/simd_x86.h (_S_masked_unary):
5688         Cast inputs < 16 bytes to 16 byte vectors before calling the
5689         right subtraction builtin. Before returning, truncate to the
5690         return vector type.
5691
5692 2024-03-27  Matthias Kretz  <m.kretz@gsi.de>
5693
5694         * include/experimental/bits/simd_x86.h (_S_masked_unary): Call
5695         the 4- and 8-byte variants of __builtin_ia32_subp[ds] without
5696         rounding direction argument.
5697
5698 2024-03-27  Srinivas Yadav Singanaboina  <vasu.srinivasvasu.14@gmail.com>
5699
5700         * include/Makefile.am: Add simd_sve.h.
5701         * include/Makefile.in: Add simd_sve.h.
5702         * include/experimental/bits/simd.h: Add new SveAbi.
5703         * include/experimental/bits/simd_builtin.h: Use
5704         __no_sve_deduce_t to support existing Neon Abi.
5705         * include/experimental/bits/simd_converter.h: Convert
5706         sequentially when sve is available.
5707         * include/experimental/bits/simd_detail.h: Define sve
5708         specific macro.
5709         * include/experimental/bits/simd_math.h: Fallback frexp
5710         to execute sequntially when sve is available, to handle
5711         fixed_size_simd return type that always uses sve.
5712         * include/experimental/simd: Include bits/simd_sve.h.
5713         * testsuite/experimental/simd/tests/bits/main.h: Enable
5714         testing for sve128, sve256, sve512.
5715         * include/experimental/bits/simd_sve.h: New file.
5716
5717 2024-03-26  Arsen Arsenović  <arsen@aarsen.me>
5718
5719         * include/std/generator (generator::_Iterator::operator*): Fix
5720         return type.
5721         * testsuite/24_iterators/range_generators/iter_deref_return.cc:
5722         New test.
5723
5724 2024-03-26  Arsen Arsenović  <arsen@aarsen.me>
5725
5726         * include/std/generator: Fix _V badname.
5727
5728 2024-03-26  Jonathan Wakely  <jwakely@redhat.com>
5729
5730         * testsuite/19_diagnostics/stacktrace/current.cc: Check for
5731         __cpp_lib_stacktrace instead of check for stacktrace ET.
5732         * testsuite/19_diagnostics/stacktrace/entry.cc: Likewise.
5733         * testsuite/19_diagnostics/stacktrace/hash.cc: Likewise.
5734         * testsuite/19_diagnostics/stacktrace/output.cc: Likewise.
5735         * testsuite/19_diagnostics/stacktrace/stacktrace.cc: Likewise.
5736         * testsuite/19_diagnostics/stacktrace/synopsis.cc: Likewise.
5737         * testsuite/19_diagnostics/stacktrace/version.cc: Likewise.
5738         * testsuite/23_containers/vector/debug/assign4_backtrace_neg.cc:
5739         Likewise.
5740         * testsuite/lib/libstdc++.exp (check_effective_target_stacktrace):
5741         Remove.
5742
5743 2024-03-26  Jonathan Wakely  <jwakely@redhat.com>
5744
5745         * testsuite/lib/dg-options.exp (dg-require-cpp-feature-test):
5746         New proc.
5747         * testsuite/lib/libstdc++.exp (check_v3_target_cpp_feature_test):
5748         New proc.
5749         * testsuite/std/text_encoding/cons.cc: Use new directive to skip
5750         the test if the __cpp_lib_text_encoding feature test macro is
5751         not defined.
5752         * testsuite/std/text_encoding/requirements.cc: Likewise.
5753
5754 2024-03-25  Jonathan Wakely  <jwakely@redhat.com>
5755
5756         * testsuite/std/text_encoding/requirements.cc: #undef the
5757         correct macro.
5758
5759 2024-03-23  Jonathan Wakely  <jwakely@redhat.com>
5760
5761         * include/std/format (formatter): Disable specializations that
5762         would allow sequences of narrow characters to be formatted as
5763         wchar_t without conversion, as per LWG 3944.
5764         * testsuite/std/format/formatter/lwg3944.cc: New test.
5765
5766 2024-03-23  Jonathan Wakely  <jwakely@redhat.com>
5767
5768         * include/bits/utility.h (__is_in_place_index_v): New variable
5769         template.
5770         * include/std/variant (__not_in_place_tag): Define in terms of
5771         variable templates not a class template.
5772
5773 2024-03-23  Jonathan Wakely  <jwakely@redhat.com>
5774
5775         PR libstdc++/114400
5776         * include/std/string_view (operator==): Use std::type_identity_t
5777         in C++20 instead of our own __type_identity_t.
5778
5779 2024-03-22  Jonathan Wakely  <jwakely@redhat.com>
5780
5781         PR libstdc++/114401
5782         * include/bits/hashtable.h (_Hashtable::_M_reinsert_node): Call
5783         release() on node handle instead of just zeroing its pointer.
5784         (_Hashtable::_M_reinsert_node_multi): Likewise.
5785         (_Hashtable::_M_merge_unique): Likewise.
5786         (_Hashtable::_M_merge_multi): Likewise.
5787         * include/bits/node_handle.h (_Node_handle_common::release()):
5788         New member function.
5789         (_Node_handle_common::_Optional_alloc::_M_empty): Remove
5790         unnecessary union member.
5791         (_Node_handle_common): Declare _Hashtable as a friend.
5792         * include/bits/stl_tree.h (_Rb_tree::_M_reinsert_node_unique):
5793         Call release() on node handle instead of just zeroing its
5794         pointer.
5795         (_Rb_tree::_M_reinsert_node_equal): Likewise.
5796         (_Rb_tree::_M_reinsert_node_hint_unique): Likewise.
5797         (_Rb_tree::_M_reinsert_node_hint_equal): Likewise.
5798         * testsuite/23_containers/multiset/modifiers/114401.cc: New test.
5799         * testsuite/23_containers/set/modifiers/114401.cc: New test.
5800         * testsuite/23_containers/unordered_multiset/modifiers/114401.cc: New test.
5801         * testsuite/23_containers/unordered_set/modifiers/114401.cc: New test.
5802
5803 2024-03-22  Jonathan Wakely  <jwakely@redhat.com>
5804
5805         PR libstdc++/113841
5806         * include/bits/allocator.h (allocator<cv T>): Add default
5807         constructor to partial specializations for cv-qualified types.
5808         * include/bits/stl_vector.h (_Vector_impl::_Vector_impl()):
5809         Constrain so that it's only present if the allocator is default
5810         constructible.
5811         * include/bits/stl_bvector.h (_Bvector_impl::_Bvector_impl()):
5812         Likewise.
5813         * testsuite/23_containers/vector/cons/113841.cc: New test.
5814
5815 2024-03-22  Jonathan Wakely  <jwakely@redhat.com>
5816
5817         * include/bits/stl_construct.h (destroy_at, construct_at): Guard
5818         with feature test macros instead of just __cplusplus.
5819
5820 2024-03-22  Jonathan Wakely  <jwakely@redhat.com>
5821
5822         * include/bits/version.def (generator, tuple_like): Move earlier
5823         in the file.
5824         * include/bits/version.h: Regenerate.
5825
5826 2024-03-22  Jonathan Wakely  <jwakely@redhat.com>
5827
5828         PR libstdc++/114394
5829         * include/std/functional (bind): Use __invoke_result_t instead
5830         of result_of::type.
5831         * include/std/type_traits (__invoke_result_t): New alias
5832         template.
5833         * testsuite/20_util/bind/ref_neg.cc: Adjust prune pattern.
5834
5835 2024-03-20  François Dumont  <fdumont@gcc.gnu.org>
5836
5837         * include/bits/version.def (null_iterators): Remove extra_cond.
5838         * include/bits/version.h: Regenerate.
5839
5840 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
5841
5842         PR libstdc++/114359
5843         * include/bits/random.tcc (binomial_distribution::param_type):
5844         Ensure arithmetic is done as type double.
5845         * testsuite/26_numerics/random/binomial_distribution/114359.cc: New test.
5846
5847 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
5848
5849         PR libstdc++/101228
5850         * include/pstl/parallel_backend_tbb.h (TBB_SUPPRESS_DEPRECATED_MESSAGES):
5851         Define before including <tbb/task.h> then undef afterwards.
5852
5853 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
5854
5855         * include/Makefile.am [MAINTAINER_MODE]: Add target to
5856         automatically update <bits/version.h>.
5857         * include/Makefile.in: Regenerate.
5858
5859 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
5860
5861         * doc/xml/manual/build_hacking.xml: Document generated files.
5862         Update list of convenience libraries and sub-directories under
5863         the src directory.
5864         * doc/html/*: Regenerate.
5865
5866 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
5867
5868         * include/bits/text_encoding-data.h: Regenerate.
5869         * include/bits/unicode-data.h: Regenerate.
5870         * scripts/gen_text_encoding_data.py: Fix header of generated
5871         file to name the correct script.
5872
5873 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
5874
5875         * testsuite/util/pstl/test_utils.h: Fix typos in comments.
5876
5877 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
5878
5879         PR libstdc++/114367
5880         * include/bits/stl_bvector.h (_M_allocate): Use allocator's
5881         construct function to begin lifetime of words.
5882
5883 2024-03-19  Iain Sandoe  <iain@sandoe.co.uk>
5884
5885         * testsuite/lib/dg-options.exp (atomic_link_flags): Emit a -B
5886         option for the path to the uninstalled libatomic.
5887
5888 2024-03-19  Iain Sandoe  <iain@sandoe.co.uk>
5889
5890         * testsuite/lib/libstdc++.exp (v3_target_compile): Instead of
5891         /dev/null, use a temporary file for test executables on Darwin.
5892
5893 2024-03-18  François Dumont  <fdumont@gcc.gnu.org>
5894
5895         * include/debug/safe_iterator.tcc (_Safe_iterator<>::_M_can_advance):
5896         Accept 0 offset advance on value-initialized iterator.
5897         * testsuite/23_containers/vector/debug/n3644.cc: New test case.
5898
5899 2024-03-18  François Dumont  <fdumont@gcc.gnu.org>
5900
5901         * include/debug/safe_local_iterator.tcc
5902         (_Safe_local_iterator::_M_valid_range): Add _M_value_initialized and
5903         _M_singular checks.
5904         * testsuite/23_containers/unordered_set/debug/114316.cc: New test case.
5905
5906 2024-03-17  François Dumont  <fdumont@gcc.gnu.org>
5907
5908         PR libstdc++/114316
5909         * include/debug/safe_iterator.tcc (_Safe_iterator<>::_M_valid_range):
5910         First check if both iterators are value-initialized before checking if
5911         singular.
5912         * testsuite/23_containers/set/debug/114316.cc: New test case.
5913         * testsuite/23_containers/vector/debug/114316.cc: New test case.
5914
5915 2024-03-14  Jonathan Wakely  <jwakely@redhat.com>
5916
5917         PR libstdc++/114325
5918         * include/std/format (_Scanner::_M_scan): Pass correct length to
5919         __to_chars_10_impl.
5920         * testsuite/std/format/functions/format.cc: Check negative
5921         integers with empty format-spec.
5922
5923 2024-03-14  Jonathan Wakely  <jwakely@redhat.com>
5924
5925         * include/bits/stl_algo.h (find_end, all_of, none_of, any_of)
5926         (find_if_not, is_partitioned, partition_point, remove)
5927         (remove_if, unique, lower_bound, upper_bound, equal_range)
5928         (binary_search, includes, is_sorted, is_sorted_until, minmax)
5929         (minmax_element, is_permutation, clamp, find_if, find_first_of)
5930         (adjacent_find, count, count_if, search, search_n, min_element)
5931         (max_element): Add nodiscard attribute.
5932         * include/bits/stl_algobase.h (min, max, lower_bound, equal)
5933         (lexicographical_compare, lexicographical_compare_three_way)
5934         (mismatch): Likewise.
5935         * include/bits/stl_heap.h (is_heap, is_heap_until): Likewise.
5936         * testsuite/25_algorithms/equal/debug/1_neg.cc: Add dg-warning.
5937         * testsuite/25_algorithms/equal/debug/2_neg.cc: Likewise.
5938         * testsuite/25_algorithms/equal/debug/3_neg.cc: Likewise.
5939         * testsuite/25_algorithms/find_first_of/concept_check_1.cc:
5940         Likewise.
5941         * testsuite/25_algorithms/is_permutation/2.cc: Likewise.
5942         * testsuite/25_algorithms/lexicographical_compare/71545.cc:
5943         Likewise.
5944         * testsuite/25_algorithms/lower_bound/33613.cc: Likewise.
5945         * testsuite/25_algorithms/lower_bound/debug/irreflexive.cc:
5946         Likewise.
5947         * testsuite/25_algorithms/lower_bound/debug/partitioned_neg.cc:
5948         Likewise.
5949         * testsuite/25_algorithms/lower_bound/debug/partitioned_pred_neg.cc:
5950         Likewise.
5951         * testsuite/25_algorithms/minmax/3.cc: Likewise.
5952         * testsuite/25_algorithms/search/78346.cc: Likewise.
5953         * testsuite/25_algorithms/search_n/58358.cc: Likewise.
5954         * testsuite/25_algorithms/unique/1.cc: Likewise.
5955         * testsuite/25_algorithms/unique/11480.cc: Likewise.
5956         * testsuite/25_algorithms/upper_bound/33613.cc: Likewise.
5957         * testsuite/25_algorithms/upper_bound/debug/partitioned_neg.cc:
5958         Likewise.
5959         * testsuite/25_algorithms/upper_bound/debug/partitioned_pred_neg.cc:
5960         Likewise.
5961         * testsuite/ext/concept_checks.cc: Likewise.
5962         * testsuite/ext/is_heap/47709.cc: Likewise.
5963         * testsuite/ext/is_sorted/cxx0x.cc: Likewise.
5964
5965 2024-03-14  xndcn  <xndchn@gmail.com>
5966
5967         * include/bits/atomic_base.h (__atomic_float::__atomic_float(Fp)):
5968         Clear padding.
5969         * testsuite/29_atomics/atomic_float/compare_exchange_padding.cc:
5970         New test.
5971
5972 2024-03-14  Jonathan Wakely  <jwakely@redhat.com>
5973
5974         PR libstdc++/66146
5975         * doc/xml/manual/status_cxx2011.xml: Remove mention of Linux in
5976         note about std::call_once.
5977         * doc/xml/manual/status_cxx2014.xml: Likewise.
5978         * doc/xml/manual/status_cxx2017.xml: Likewise.
5979         * doc/html/manual/status.html: Regenerate.
5980
5981 2024-03-14  Jonathan Wakely  <jwakely@redhat.com>
5982
5983         * doc/xml/manual/status_cxx2023.xml: Update C++23 status table.
5984         * doc/html/manual/status.html: Regenerate.
5985         * include/bits/version.def: Fix typo in comment.
5986
5987 2024-03-13  Jonathan Wakely  <jwakely@redhat.com>
5988
5989         * testsuite/libstdc++-prettyprinters/cxx11.cc: Move custom_cat
5990         to namespace scope.
5991
5992 2024-03-13  Jonathan Wakely  <jwakely@redhat.com>
5993
5994         * doc/xml/manual/debug.xml: Improve docs on debug builds and
5995         using ASan. Mention _GLIBCXX_ASSERTIONS. Reorder sections to put
5996         the most relevant ones first.
5997         * doc/xml/manual/using.xml: Add comma.
5998         * doc/html/*: Regenerate.
5999
6000 2024-03-13  Jonathan Wakely  <jwakely@redhat.com>
6001
6002         * doc/xml/manual/debug.xml: Document that concept checking might
6003         be removed in future.
6004         * doc/xml/manual/extensions.xml: Likewise.
6005
6006 2024-03-09  Jonathan Wakely  <jwakely@redhat.com>
6007
6008         PR libstdc++/114240
6009         * include/bits/chrono_io.h (_Parser::operator()): Assume
6010         hours(0) for a time_point, so that a time is not required
6011         to be present.
6012         * testsuite/std/time/parse/114240.cc: New test.
6013
6014 2024-03-09  Jonathan Wakely  <jwakely@redhat.com>
6015
6016         PR libstdc++/114279
6017         * include/bits/chrono_io.h (_Parser::_M_is_leap_second): New
6018         data member.
6019         (_Parser::_M_reserved): Reserve padding bits for future use.
6020         (_Parser::operator()): Set _M_is_leap_second if %S reads 60s.
6021         (from_stream): Only allow _M_is_leap_second for utc_time and
6022         local_time. Adjust arithmetic for utc_time so that leap seconds
6023         are preserved. Use time_point_cast to convert to a possibly
6024         lower-precision result type.
6025         * testsuite/std/time/parse.cc: Move to ...
6026         * testsuite/std/time/parse/parse.cc: ... here.
6027         * testsuite/std/time/parse/114279.cc: New test.
6028
6029 2024-03-07  Jonathan Wakely  <jwakely@redhat.com>
6030
6031         * include/bits/chrono_io.h (_Parser::operator()): Use
6032         std::from_chars to parse fractional seconds.
6033
6034 2024-03-07  Jonathan Wakely  <jwakely@redhat.com>
6035
6036         PR libstdc++/114244
6037         * include/bits/chrono_io.h (_Parser::operator()): Remove
6038         redundant uses of duration_cast. Use chrono::round to convert
6039         long double value to durations with integer representations.
6040         Check represenation type when deciding whether to skip parsing
6041         fractional seconds.
6042         * testsuite/20_util/duration/114244.cc: New test.
6043         * testsuite/20_util/duration/io.cc: Check that a floating-point
6044         duration with ratio<1> precision can be parsed.
6045
6046 2024-03-07  Jonathan Wakely  <jwakely@redhat.com>
6047
6048         PR libstdc++/114103
6049         * include/bits/version.def (atomic_lock_free_type_aliases): Add
6050         extra_cond to check for at least one always-lock-free type.
6051         * include/bits/version.h: Regenerate.
6052         * include/std/atomic (atomic_signed_lock_free)
6053         (atomic_unsigned_lock_free): Only use always-lock-free types.
6054         * src/c++20/tzdb.cc (time_zone::_Impl::RulesCounter): Don't use
6055         atomic counter if lock-free aliases aren't available.
6056         * testsuite/29_atomics/atomic/lock_free_aliases.cc: XFAIL for
6057         targets without lock-free word-size compare_exchange.
6058
6059 2024-03-07  Jonathan Wakely  <jwakely@redhat.com>
6060
6061         * include/std/chrono (__get_leap_second_info): Update expiry
6062         time for hardcoded list of leap seconds.
6063         * testsuite/std/time/tzdb/leap_seconds.cc: Update comment.
6064
6065 2024-03-07  Jonathan Wakely  <jwakely@redhat.com>
6066
6067         * testsuite/23_containers/deque/allocator/default_init.cc: Use
6068         std::memset instead of __builtin_memset.
6069         * testsuite/23_containers/forward_list/allocator/default_init.cc:
6070         Likewise.
6071         * testsuite/23_containers/list/allocator/default_init.cc:
6072         Likewise.
6073         * testsuite/23_containers/map/allocator/default_init.cc:
6074         Likewise.
6075         * testsuite/23_containers/set/allocator/default_init.cc:
6076         Likewise.
6077         * testsuite/23_containers/unordered_map/allocator/default_init.cc:
6078         Likewise.
6079         * testsuite/23_containers/unordered_set/allocator/default_init.cc:
6080         Likewise.
6081         * testsuite/23_containers/vector/allocator/default_init.cc:
6082         Likewise.
6083         * testsuite/23_containers/vector/bool/allocator/default_init.cc:
6084         Likewise.
6085         * testsuite/29_atomics/atomic/compare_exchange_padding.cc:
6086         Likewise.
6087         * testsuite/util/atomic/wait_notify_util.h: Likewise.
6088
6089 2024-03-07  Jonathan Wakely  <jwakely@redhat.com>
6090
6091         * include/std/format (_Arg_store::_S_make_elt): Add two
6092         static_assert checks to give more user-friendly error messages.
6093         * testsuite/lib/prune.exp (libstdc++-dg-prune): Prune another
6094         form of "in requirements with" note.
6095         * testsuite/std/format/arguments/args_neg.cc: Check for
6096         user-friendly diagnostics for non-formattable types.
6097         * testsuite/std/format/string_neg.cc: Likewise.
6098
6099 2024-03-04  Jonathan Wakely  <jwakely@redhat.com>
6100
6101         PR libstdc++/114147
6102         * include/std/tuple (tuple::tuple(allocator_arg_t, const Alloc&)):
6103         Add missing overload of allocator-extended default constructor.
6104         (tuple<T1,T2>::tuple(allocator_arg_t, const Alloc&)): Likewise.
6105         * testsuite/20_util/tuple/cons/114147.cc: New test.
6106
6107 2024-02-29  Jonathan Wakely  <jwakely@redhat.com>
6108
6109         * include/std/format (basic_format_arg::handle::__maybe_const_t):
6110         Fix condition to check if const type is formattable.
6111         (basic_format_arg::handle::handle(T&)): Remove redundant
6112         static_assert.
6113         * testsuite/std/format/formatter/basic.cc: New test.
6114
6115 2024-02-29  Jonathan Wakely  <jwakely@redhat.com>
6116
6117         PR libstdc++/113960
6118         * include/bits/stl_algobase.h (__is_byte_iter): Replace with ...
6119         (__memcmp_ordered_with): New concept.
6120         (lexicographical_compare_three_way): Use __memcmp_ordered_with
6121         instead of __is_byte_iter. Use correct length for memcmp.
6122         * testsuite/25_algorithms/lexicographical_compare_three_way/113960.cc:
6123         New test.
6124
6125 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
6126
6127         PR libstdc++/114152
6128         * include/experimental/scope (scope_exit scope_fail): Make
6129         destructor unconditionally noexcept.
6130         (scope_sucess): Fix noexcept-specifier.
6131         * testsuite/experimental/scopeguard/114152.cc: New test.
6132
6133 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
6134
6135         * doc/xml/manual/appendix_contributing.xml: Change URLs to use
6136         https.
6137         * doc/html/manual/*: Regenerate.
6138
6139 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
6140
6141         * doc/xml/manual/appendix_contributing.xml: Replace outdated
6142         info on ChangeLog entries.
6143         * doc/html/manual/appendix_contributing.html: Regenerate.
6144
6145 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
6146
6147         * include/bits/stl_bvector.h (vector<bool, A>::at): Add
6148         nodiscard.
6149         * include/bits/stl_vector.h (vector<T, A>::at): Likewise.
6150         (operator==, operator<=>, operator<, operator!=, operator>)
6151         (operator<=, operator>=): Likewise.
6152         * include/debug/vector (operator==, operator<=>, operator<)
6153         (operator!=, operator>, operator<=, operator>=): Likewise.
6154         * testsuite/23_containers/vector/nodiscard.cc: New test.
6155
6156 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
6157
6158         * include/bits/atomic_base.h (operator|, operator&): Add
6159         noexcept.
6160         * include/bits/fs_fwd.h (operator&, operator|, operator^)
6161         (operator~): Add nodiscard to overloads for copy_options, perms,
6162         perm_options, and directory_options.
6163         * include/bits/ios_base.h (operator&, operator|, operator^)
6164         (operator~): Add nodiscard and noexcept to overloads for
6165         _Ios_Fmtflags, _Ios_Openmode, and _Ios_Iostate.
6166         (operator|=, operator&=, operator^=): Add constexpr for C++14.
6167         * include/bits/regex_constants.h (operator&, operator|, operator^)
6168         (operator~): Add nodiscard and noexcept to overloads for
6169         syntax_option_type and match_flag_type.
6170         (operator|=, operator&=, operator^=): Add noexcept.
6171         * include/std/charconv (operator&, operator|, operator^)
6172         (operator~): Add nodiscard to overloads for chars_format.
6173         * include/std/future (operator&, operator|, operator^)
6174         (operator~): Add nodiscard for overloads for launch.
6175         (operator&=, operator|=, operator^=): Add constexpr for C++14.
6176         * include/experimental/bits/fs_fwd.h  (operator&, operator|)
6177         (operator^, operator~): Add nodiscard to overloads for
6178         copy_options, perms, and directory_options.
6179         * testsuite/27_io/ios_base/types/fmtflags/bitmask_operators.cc:
6180         Add dg-warning for nodiscard warnings.
6181         * testsuite/27_io/ios_base/types/iostate/bitmask_operators.cc:
6182         Likewise.
6183         * testsuite/27_io/ios_base/types/openmode/bitmask_operators.cc:
6184         Likewise.
6185         * testsuite/27_io/filesystem/operations/bitmask_types.cc:
6186         New test.
6187
6188 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
6189
6190         * testsuite/27_io/basic_ostream/print/1.cc: Check error
6191         handling.
6192         * testsuite/27_io/print/1.cc: Likewise.
6193
6194 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
6195
6196         * include/std/ostream (vprint_unicode) [__CYGWIN__]: Use POSIX
6197         code path for Cygwin instead of Windows.
6198         * include/std/print (vprint_unicode) [__CYGWIN__]: Likewise.
6199         * testsuite/27_io/basic_ostream/print/1.cc: Only add -lstdc++exp
6200         for *-*-mingw* targets.
6201         * testsuite/27_io/print/1.cc: Likewise.
6202
6203 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
6204
6205         * include/bits/alloc_traits.h: Include <bits/stl_iterator.h> for
6206         __make_move_if_noexcept_iterator.
6207
6208 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
6209
6210         * include/std/stacktrace: Add nodiscard attribute to all
6211         functions without side effects.
6212
6213 2024-02-20  François Dumont  <fdumont@gcc.gnu.org>
6214
6215         * include/bits/stl_algobase.h (std::__niter_wrap): Add a call to
6216         std::__niter_base on res iterator.
6217
6218 2024-02-19  Iain Sandoe  <iain@sandoe.co.uk>
6219             Jonathan Wakely  <jwakely@redhat.com>
6220
6221         PR target/112397
6222         * configure: Regenerate.
6223         * configure.ac: Detect if we are building for Darwin.
6224         * libsupc++/Makefile.am: If we are building for Darwin, then
6225         suppress hot/cold partitioning for the array allocators.
6226         * libsupc++/Makefile.in: Regenerated.
6227
6228 2024-02-17  François Dumont  <fdumont@gcc.gnu.org>
6229
6230         * include/bits/stl_algobase.h (std::__niter_base): Redefine the overload
6231         definitions for __gnu_debug::_Safe_iterator.
6232         * include/debug/safe_iterator.tcc (std::__niter_base): Adapt declarations.
6233
6234 2024-02-16  Jonathan Wakely  <jwakely@redhat.com>
6235
6236         PR libstdc++/87744
6237         PR libstdc++/113961
6238         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
6239         line number.
6240
6241 2024-02-16  Jonathan Wakely  <jwakely@redhat.com>
6242
6243         PR libstdc++/87744
6244         PR libstdc++/113931
6245         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
6246         line number.
6247
6248 2024-02-16  Jonathan Wakely  <jwakely@redhat.com>
6249
6250         * doc/xml/manual/debug_mode.xml: Update docs for backtraces.
6251         * doc/html/manual/debug_mode_using.html: Regenerate.
6252
6253 2024-02-16  Jonathan Wakely  <jwakely@redhat.com>
6254
6255         * doc/xml/manual/test.xml: Fix spelling of <envar> elements.
6256         * doc/html/manual/test.html: Regenerate.
6257
6258 2024-02-15  Jonathan Wakely  <jwakely@redhat.com>
6259
6260         PR libstdc++/113806
6261         * include/std/bitset (bitset::operator>>=): Remove redundant
6262         call to _M_do_sanitize.
6263
6264 2024-02-15  Jonathan Wakely  <jwakely@redhat.com>
6265
6266         PR libstdc++/113807
6267         * include/std/bitset (bitset::set()): Use memset instead of a
6268         loop over the individual words.
6269
6270 2024-02-15  Jonathan Wakely  <jwakely@redhat.com>
6271
6272         PR libstdc++/113811
6273         * include/bits/stl_algo.h (__rotate): Use unsigned values for
6274         division.
6275
6276 2024-02-15  Jonathan Wakely  <jwakely@redhat.com>
6277
6278         PR libstdc++/99117
6279         * include/std/valarray (valarray::operator=(const _Expr&)):
6280         Use loop to copy instead of __valarray_copy with _Array.
6281         * testsuite/26_numerics/valarray/99117.cc: New test.
6282
6283 2024-02-15  Jonathan Wakely  <jwakely@redhat.com>
6284
6285         * src/c++20/tzdata.zi: Import new file from 2024a release.
6286         * src/c++20/tzdb.cc (tzdb_list::_Node::_S_read_leap_seconds)
6287         Update expiry date for leap seconds list.
6288
6289 2024-02-15  Jonathan Wakely  <jwakely@redhat.com>
6290
6291         PR libstdc++/87744
6292         * include/bits/random.h [!__SIZEOF_INT128__] (_Select_uint_least_t):
6293         Define specialization for 64-bit generators with
6294         non-power-of-two modulus and large constants.
6295         (__mod): Use if constexpr unconditionally.
6296         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
6297         line number.
6298         * testsuite/26_numerics/random/linear_congruential_engine/87744.cc:
6299         New test.
6300
6301 2024-02-14  Gerald Pfeifer  <gerald@pfeifer.com>
6302
6303         * doc/xml/manual/status_cxx2023.xml: Fix C++ item p2442 to be
6304         version 1.
6305         * doc/html/manual/status.html: Regenerate.
6306
6307 2024-02-12  Paul Keir  <paul.keir@uws.ac.uk>
6308
6309         PR libstdc++/113294
6310         * include/bits/basic_string.h (basic_string::operator=): Use
6311         _M_use_local_data() instead of _M_local_buf on the moved-from
6312         string.
6313         * testsuite/21_strings/basic_string/modifiers/constexpr.cc
6314         (test_move): New test.
6315
6316 2024-02-09  Ken Matsui  <kmatsui@gcc.gnu.org>
6317
6318         * include/bits/c++config (_GLIBCXX_HAVE_BUILTIN_IS_SAME):
6319         Removed.
6320         * include/std/type_traits (is_same): Use
6321         _GLIBCXX_USE_BUILTIN_TRAIT instead of
6322         _GLIBCXX_HAVE_BUILTIN_IS_SAME.
6323         (is_same_v): Likewise.
6324
6325 2024-02-08  Jonathan Wakely  <jwakely@redhat.com>
6326
6327         * include/bits/shared_ptr_atomic.h: Fix typo in comment.
6328
6329 2024-02-08  Jonathan Wakely  <jwakely@redhat.com>
6330
6331         PR libstdc++/100147
6332         * include/bits/gslice.h (operator=): Add comment about lack of
6333         self-assignment check.
6334
6335 2024-02-08  Jonathan Wakely  <jwakely@redhat.com>
6336
6337         * include/tr2/type_traits (bases, direct_bases): Use
6338         __has_builtin to check if required built-ins are supported.
6339
6340 2024-02-07  Patrick Palka  <ppalka@redhat.com>
6341
6342         PR testsuite/113710
6343         PR c++/113814
6344         * include/bits/stl_pair.h (tuple_element): Add forward
6345         declaration of the partial specialization for tuple.
6346
6347 2024-02-06  Torbjörn SVENSSON  <torbjorn.svensson@foss.st.com>
6348
6349         * testsuite/lib/libstdc++.exp: Use "nul" for Windows, "/dev/null"
6350         for other environments.
6351
6352 2024-02-04  Jonathan Wakely  <jwakely@redhat.com>
6353
6354         * include/std/format (__format::_Spec::_M_reserved): Define new
6355         bit-field members to reserve padding bits for future extensions.
6356
6357 2024-02-04  Jonathan Wakely  <jwakely@redhat.com>
6358
6359         * src/experimental/Makefile.am: Use libstdc++fsconvenience.a
6360         instead of libstdc++fs.a.
6361         * src/experimental/Makefile.in: Regenerate.
6362         * src/filesystem/Makefile.am: Build libstdc++fsconvenience.a as
6363         well.
6364         * src/filesystem/Makefile.in: Regenerate.
6365
6366 2024-02-04  Jonathan Wakely  <jwakely@redhat.com>
6367
6368         * include/bits/text_encoding-data.h: Regenerate.
6369         * include/bits/unicode-data.h: Regenerate.
6370         * scripts/gen_text_encoding_data.py: Add copyright and license
6371         text to the output.
6372
6373 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
6374
6375         PR libstdc++/113335
6376         * include/bits/std_function.h (__function_guide_helper): Add
6377         partial specialization for explicit object member functions, as
6378         per LWG 3617.
6379         * testsuite/20_util/function/cons/deduction_c++23.cc: Check
6380         explicit object member functions.
6381         * testsuite/30_threads/packaged_task/cons/deduction_c++23.cc:
6382         Likewise.
6383
6384 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
6385
6386         * testsuite/17_intro/names.cc [_AIX]: Undefine "u".
6387
6388 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
6389
6390         * include/experimental/internet (network_v6::network): Define.
6391         (network_v6::hosts): Finish implementing.
6392         (network_v6::to_string): Do not concatenate std::string to
6393         arbitrary std::basic_string specialization.
6394         * testsuite/experimental/net/internet/network/v6/cons.cc: New
6395         test.
6396
6397 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
6398
6399         PR libstdc++/90276
6400         * testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: Fix
6401         comparison function to use less-than instead of equality.
6402
6403 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
6404
6405         PR libstdc++/90276
6406         * testsuite/util/pstl/test_utils.h (reverse_invoker): Do not use
6407         perfect forwarding for iterator arguments.
6408
6409 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
6410
6411         * include/std/string_view (basic_string_view(R&&)): Remove
6412         constraint that traits_type must be the same, as per LWG 3857.
6413         * testsuite/21_strings/basic_string_view/cons/char/range_c++20.cc:
6414         Explicit conversion between different specializations should be
6415         allowed.
6416         * testsuite/21_strings/basic_string_view/cons/wchar_t/range_c++20.cc:
6417         Likewise.
6418
6419 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
6420
6421         * include/std/syncstream (basic_osyncstream::operator=): Remove
6422         noexcept, as per LWG 3867.
6423
6424 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
6425
6426         * include/std/generator (promise_type::yield_value): Remove
6427         noexcept from fourth overload, as per LWG 3894.
6428
6429 2024-02-01  Patrick Palka  <ppalka@redhat.com>
6430
6431         PR libstdc++/113309
6432         PR libstdc++/109203
6433         * include/bits/ranges_util.h (__detail::__pair_like): Don't
6434         define in C++23 mode.
6435         (__detail::__pair_like_convertible_from): Adjust as per P2165R4.
6436         (__detail::__is_subrange<subrange>): Moved from <ranges>.
6437         (__detail::__is_tuple_like_v<subrange>): Likewise.
6438         * include/bits/stl_iterator.h: Include <bits/utility.h> for
6439         C++23.
6440         (__different_from): Move to <concepts>.
6441         (__iter_key_t): Adjust for C++23 as per P2165R4.
6442         (__iter_val_t): Likewise.
6443         * include/bits/stl_pair.h (pair, array): Forward declare.
6444         (get): Forward declare all overloads relevant to P2165R4
6445         tuple-like constructors.
6446         (__is_tuple_v): Define for C++23.
6447         (__is_tuple_like_v): Define for C++23.
6448         (__tuple_like): Define for C++23 as per P2165R4.
6449         (__pair_like): Define for C++23 as per P2165R4.
6450         (__eligibile_tuple_like): Define for C++23.
6451         (__eligibile_pair_like): Define for C++23.
6452         (pair::_S_constructible_from_pair_like): Define for C++23.
6453         (pair::_S_convertible_from_pair_like): Define for C++23.
6454         (pair::_S_dangles_from_pair_like): Define for C++23.
6455         (pair::pair): Define overloads taking a tuple-like type for
6456         C++23 as per P2165R4.
6457         (pair::_S_assignable_from_tuple_like): Define for C++23.
6458         (pair::_S_const_assignable_from_tuple_like): Define for C++23.
6459         (pair::operator=): Define overloads taking a tuple-like type for
6460         C++23 as per P2165R4.
6461         * include/bits/utility.h (ranges::__detail::__is_subrange):
6462         Moved from <ranges>.
6463         * include/bits/version.def (tuple_like): Define for C++23.
6464         * include/bits/version.h: Regenerate.
6465         * include/std/concepts (__different_from): Moved from
6466         <bits/stl_iterator.h>.
6467         (ranges::__swap::__adl_swap): Clarify which __detail namespace.
6468         * include/std/map (__cpp_lib_tuple_like): Define C++23.
6469         * include/std/ranges (__detail::__is_subrange): Moved to
6470         <bits/utility.h>.
6471         (__detail::__is_subrange<subrange>): Moved to <bits/ranges_util.h>
6472         (__detail::__has_tuple_element): Adjust for C++23 as per P2165R4.
6473         (__detail::__tuple_or_pair): Remove as per P2165R4.  Replace all
6474         uses with plain tuple as per P2165R4.
6475         * include/std/tuple (__cpp_lib_tuple_like): Define for C++23.
6476         (__tuple_like_tag_t): Define for C++23.
6477         (__tuple_cmp): Forward declare for C++23.
6478         (_Tuple_impl::_Tuple_impl): Define overloads taking
6479         __tuple_like_tag_t and a tuple-like type for C++23.
6480         (_Tuple_impl::_M_assign): Likewise.
6481         (tuple::__constructible_from_tuple_like): Define for C++23.
6482         (tuple::__convertible_from_tuple_like): Define for C++23.
6483         (tuple::__dangles_from_tuple_like): Define for C++23.
6484         (tuple::tuple): Define overloads taking a tuple-like type for
6485         C++23 as per P2165R4.
6486         (tuple::__assignable_from_tuple_like): Define for C++23.
6487         (tuple::__const_assignable_from_tuple_like): Define for C++23.
6488         (tuple::operator=): Define overloads taking a tuple-like type
6489         for C++23 as per P2165R4.
6490         (tuple::__tuple_like_common_comparison_category): Define for C++23.
6491         (tuple::operator<=>): Define overload taking a tuple-like type
6492         for C++23 as per P2165R4.
6493         (array, get): Forward declarations moved to <bits/stl_pair.h>.
6494         (tuple_cat): Constrain with __tuple_like for C++23 as per P2165R4.
6495         (apply): Likewise.
6496         (make_from_tuple): Likewise.
6497         (__tuple_like_common_reference): Define for C++23.
6498         (basic_common_reference): Adjust as per P2165R4.
6499         (__tuple_like_common_type): Define for C++23.
6500         (common_type): Adjust as per P2165R4.
6501         * include/std/unordered_map (__cpp_lib_tuple_like): Define for
6502         C++23.
6503         * include/std/utility (__cpp_lib_tuple_like): Define for C++23.
6504         * testsuite/std/ranges/zip/1.cc (test01): Adjust to handle pair
6505         and 2-tuple interchangeably.
6506         (test05): New test.
6507         * testsuite/20_util/pair/p2165r4.cc: New test.
6508         * testsuite/20_util/tuple/p2165r4.cc: New test.
6509
6510 2024-02-01  Patrick Palka  <ppalka@redhat.com>
6511
6512         * include/bits/stl_pair.h (pair::_S_const_assignable): Define,
6513         factored out from ...
6514         (pair::operator=): ... the constraints of the const overloads.
6515
6516 2024-02-01  Jonathan Wakely  <jwakely@redhat.com>
6517
6518         * include/bits/version.tpl: Do not use def-file-line for each
6519         macro being defined.
6520         * include/bits/version.h: Regenerate.
6521
6522 2024-02-01  Jonathan Wakely  <jwakely@redhat.com>
6523
6524         * testsuite/25_algorithms/copy/debug/constexpr_neg.cc: Adjust
6525         dg-error pattern.
6526         * testsuite/25_algorithms/copy_backward/debug/constexpr_neg.cc:
6527         Likewise.
6528         * testsuite/25_algorithms/equal/debug/constexpr_neg.cc:
6529         Likewise.
6530         * testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_neg.cc:
6531         Likewise.
6532         * testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_pred_neg.cc:
6533         Likewise.
6534         * testsuite/25_algorithms/lower_bound/debug/constexpr_valid_range_neg.cc:
6535         Likewise.
6536         * testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_neg.cc:
6537         Likewise.
6538         * testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_pred_neg.cc:
6539         Likewise.
6540         * testsuite/25_algorithms/upper_bound/debug/constexpr_valid_range_neg.cc:
6541         Likewise.
6542
6543 2024-02-01  Jonathan Wakely  <jwakely@redhat.com>
6544
6545         * include/experimental/internet (network_v4::to_string()):
6546         Remove lambda and use of resize_and_overwrite.
6547
6548 2024-01-31  Jonathan Wakely  <jwakely@redhat.com>
6549
6550         * acinclude.m4 (GLIBCXX_CHECK_TEXT_ENCODING): Use <xlocale.h> if
6551         needed for newlocale.
6552         * configure: Regenerate.
6553         * src/c++26/text_encoding.cc: Use <xlocale.h>.
6554
6555 2024-01-31  Jonathan Wakely  <jwakely@redhat.com>
6556             Ewan Higgs  <ewan.higgs@gmail.com>
6557
6558         * include/bits/text_encoding-data.h: Regenerate.
6559         * scripts/gen_text_encoding_data.py: Add extra_aliases dict
6560         containing "ASCII".
6561         * testsuite/std/text_encoding/cons.cc: Check "ascii" is known.
6562
6563 2024-01-31  Jonathan Wakely  <jwakely@redhat.com>
6564
6565         * doc/xml/manual/using.xml: Update tables of supported headers.
6566         * doc/html/*: Regenerate.
6567
6568 2024-01-31  Jonathan Wakely  <jwakely@redhat.com>
6569
6570         * include/std/bitset (_Base_bitset::_M_do_to_ullong): Avoid
6571         -Wshift-count-overflow warning.
6572
6573 2024-01-30  Jonathan Wakely  <jwakely@redhat.com>
6574
6575         * testsuite/std/time/clock/gps/io.cc: Fix expected result in
6576         assertion and call test_format() from main.
6577
6578 2024-01-29  François Dumont  <fdumont@gcc.gnu.org>
6579
6580         * doc/xml/manual/debug_mode.xml: Link against libstdc++exp.a to use
6581         _GLIBCXX_DEBUG_BACKTRACE macro.
6582
6583 2024-01-24  Huanghui Nie  <nnnjkk@gmail.com>
6584             Théo Papadopoulo   <papadopoulo@gmail.com>
6585
6586         * include/bits/hashtable.h (_Hahstable<>::_M_remove_bucket_begin): Remove
6587         _M_before_begin check and cleanup implementation.
6588
6589 2024-01-22  Jonathan Wakely  <jwakely@redhat.com>
6590
6591         * testsuite/std/time/clock/file/io.cc: Fix expected result in
6592         assertion and call test_format() from main.
6593
6594 2024-01-21  Jonathan Wakely  <jwakely@redhat.com>
6595
6596         PR libstdc++/113500
6597         * include/bits/chrono_io.h (__formatter_chrono::_M_S): Fix
6598         printing of subseconds with floating-point rep.
6599         (__formatter_chrono::_M_format_to_ostream): Do not write
6600         time_point specializations directly to the ostream.
6601         (formatter<chrono::sys_time<D>, C>::parse): Do not allow an
6602         empty chrono-spec if the type fails to meet the constraints for
6603         writing to an ostream with operator<<.
6604         * testsuite/std/time/clock/file/io.cc: Check formatting
6605         non-integral times with empty chrono-specs.
6606         * testsuite/std/time/clock/gps/io.cc: Likewise.
6607         * testsuite/std/time/clock/utc/io.cc: Likewise.
6608         * testsuite/std/time/hh_mm_ss/io.cc: Likewise.
6609
6610 2024-01-21  Jonathan Wakely  <jwakely@redhat.com>
6611
6612         * include/bits/chrono.h (__file_clock::from_sys)
6613         (__file_clock::to_sys, __file_clock::_S_from_sys)
6614         (__file_clock::_S_to_sys): Use common_type for return type.
6615         * testsuite/std/time/clock/file/members.cc: Check round trip
6616         conversion for time with lower precision that seconds.
6617
6618 2024-01-21  Jonathan Wakely  <jwakely@redhat.com>
6619
6620         PR libstdc++/113512
6621         * include/std/format (__formatter_fp::format): Fix logic for
6622         alternate forms.
6623         * testsuite/std/format/functions/format.cc: Check buggy cases of
6624         alternate forms with g presentation type.
6625
6626 2024-01-20  Marek Polacek  <polacek@redhat.com>
6627
6628         PR c++/111410
6629         * include/std/ranges: Add #pragma to disable -Wdangling-reference with
6630         std::ranges::views::__adaptor::operator|.
6631
6632 2024-01-19  Jonathan Wakely  <jwakely@redhat.com>
6633
6634         * include/std/format (_Spec::_M_parse_fill_and_align): Do not
6635         use CTAD for _Utf32_view.
6636
6637 2024-01-19  Jonathan Wakely  <jwakely@redhat.com>
6638
6639         PR libstdc++/108822
6640         * include/std/tuple (__glibcxx_no_dangling_refs) [C++17]: Fix
6641         wrong fold-operator.
6642         * testsuite/20_util/tuple/dangling_ref.cc: Check tuples with one
6643         element and three elements. Check allocator-extended
6644         constructors.
6645
6646 2024-01-19  Patrick Palka  <ppalka@redhat.com>
6647
6648         * include/precompiled/stdc++.h [_GLIBCXX_HOSTED]: Include
6649         <print> and <text_encoding> for C++23 and C++26 respectively.
6650
6651 2024-01-18  Patrick Palka  <ppalka@redhat.com>
6652
6653         * include/bits/stl_pair.h [__cplusplus > 202002L]:
6654         Guard P2321R2 changes with __glibcxx_ranges_zip instead.
6655
6656 2024-01-18  Patrick Palka  <ppalka@redhat.com>
6657
6658         * include/std/tuple [__cplusplus > 202002L]: Guard P2321R2
6659         changes with __cpp_lib_ranges_zip instead.
6660
6661 2024-01-18  Patrick Palka  <ppalka@redhat.com>
6662
6663         PR libstdc++/109536
6664         * include/debug/safe_base.h (_Safe_sequence_base::_M_swap):
6665         Remove _GLIBCXX20_CONSTEXPR from non-inline member function.
6666         * include/debug/safe_iterator.h
6667         (_GLIBCXX20_CONSTEXPR_NON_LITERAL_SCOPE_BEGIN): Define.
6668         (_GLIBCXX20_CONSTEXPR_NON_LITERAL_SCOPE_END): Define.
6669         (_Safe_iterator::operator=): Use them around the code path that
6670         defines a variable of type __gnu_cxx::__scoped_lock.
6671         (_Safe_iterator::operator++): Likewise.
6672         (_Safe_iterator::operator--): Likewise.
6673         (_Safe_iterator::operator+=): Likewise.
6674         (_Safe_iterator::operator-=): Likewise.
6675         * testsuite/23_containers/vector/element_access/constexpr.cc
6676         (test_iterators): Test more iterator operations.
6677         * testsuite/23_containers/vector/bool/element_access/constexpr.cc
6678         (test_iterators): Likewise.
6679         * testsuite/std/ranges/adaptors/all.cc (test08) [_GLIBCXX_DEBUG]:
6680         Remove.
6681
6682 2024-01-18  Jonathan Wakely  <jwakely@redhat.com>
6683
6684         * include/bits/unicode.h (__charset_alias_match): Initialize
6685         __var_a and __var_b.
6686
6687 2024-01-18  Jonathan Wakely  <jwakely@redhat.com>
6688
6689         PR libstdc++/113450
6690         * testsuite/std/format/functions/format.cc: Use signed char
6691         instead of int8_t.
6692
6693 2024-01-17  Jonathan Wakely  <jwakely@redhat.com>
6694
6695         PR libstdc++/113318
6696         * acinclude.m4 (GLIBCXX_CONFIGURE): Add c++26 directory.
6697         (GLIBCXX_CHECK_TEXT_ENCODING): Define.
6698         * config.h.in: Regenerate.
6699         * configure: Regenerate.
6700         * configure.ac: Use GLIBCXX_CHECK_TEXT_ENCODING.
6701         * include/Makefile.am: Add new headers.
6702         * include/Makefile.in: Regenerate.
6703         * include/bits/locale_classes.h (locale::encoding): Declare new
6704         member function.
6705         * include/bits/unicode.h (__charset_alias_match): New function.
6706         * include/bits/text_encoding-data.h: New file.
6707         * include/bits/version.def (text_encoding): Define.
6708         * include/bits/version.h: Regenerate.
6709         * include/std/text_encoding: New file.
6710         * src/Makefile.am: Add new subdirectory.
6711         * src/Makefile.in: Regenerate.
6712         * src/c++26/Makefile.am: New file.
6713         * src/c++26/Makefile.in: New file.
6714         * src/c++26/text_encoding.cc: New file.
6715         * src/experimental/Makefile.am: Include c++26 convenience
6716         library.
6717         * src/experimental/Makefile.in: Regenerate.
6718         * python/libstdcxx/v6/printers.py (StdTextEncodingPrinter): New
6719         printer.
6720         * scripts/gen_text_encoding_data.py: New file.
6721         * testsuite/22_locale/locale/encoding.cc: New test.
6722         * testsuite/ext/unicode/charset_alias_match.cc: New test.
6723         * testsuite/std/text_encoding/cons.cc: New test.
6724         * testsuite/std/text_encoding/members.cc: New test.
6725         * testsuite/std/text_encoding/requirements.cc: New test.
6726
6727 2024-01-17  Jonathan Wakely  <jwakely@redhat.com>
6728
6729         * include/bits/unicode.h (_Grapheme_cluster_view): Require view.
6730         Do not use CTAD for _Utf32_view.
6731         (__format_width, __truncate): Do not use CTAD.
6732         (enable_borrowed_range<_Utf_view<T, R>>): Define specialization.
6733         (enable_borrowed_range<_Grapheme_cluster_view<R>>): Likewise.
6734
6735 2024-01-17  Patrick Palka  <ppalka@redhat.com>
6736
6737         * include/std/ranges (views::_CartesianProduct::operator()):
6738         Adjust identity case as per P2540R1.
6739         * testsuite/std/ranges/cartesian_product/1.cc (test01):
6740         Adjust expected result of the identity case.
6741
6742 2024-01-15  Patrick Palka  <ppalka@redhat.com>
6743
6744         * include/std/variant (__detail::__variant::_Variadic_union):
6745         Add bool __trivially_destructible template parameter.
6746         (__detail::__variant::_Variadic_union::~_Variadic_union):
6747         Use __trivially_destructible in constraints instead.
6748         (__detail::__variant::_Variant_storage): Pass
6749         __trivially_destructible value to _Variadic_union.
6750
6751 2024-01-15  Patrick Palka  <ppalka@redhat.com>
6752
6753         * include/bits/stl_iterator.h (const_iterator): Define conversion
6754         operators as per P2836R1.
6755         * include/bits/version.def (ranges_as_const): Update value.
6756         * include/bits/version.h: Regenerate.
6757         * testsuite/24_iterators/const_iterator/1.cc (test04): New test.
6758         * testsuite/std/ranges/adaptors/as_const/1.cc: Adjust expected
6759         value of __cpp_lib_ranges_as_const.
6760         * testsuite/std/ranges/version_c++23.cc: Likewise.
6761
6762 2024-01-15  Jonathan Wakely  <jwakely@redhat.com>
6763
6764         PR libstdc++/108822
6765         * include/std/tuple (__assignable, __is_nothrow_assignable):
6766         Move pre-C++20 definitions adjacent to their use.
6767
6768 2024-01-15  Jonathan Wakely  <jwakely@redhat.com>
6769
6770         PR testsuite/113366
6771         * include/std/format (basic_format_arg): Use __formattable
6772         variable template instead of __format::__formattable_with
6773         concept.
6774
6775 2024-01-15  Jonathan Wakely  <jwakely@redhat.com>
6776
6777         * src/c++20/tzdata.zi: Import new file from 2023d release.
6778         * src/c++20/tzdb.cc (tzdb_list::_Node::_S_read_leap_seconds)
6779         Update expiry date for leap seconds list.
6780
6781 2024-01-13  Jonathan Wakely  <jwakely@redhat.com>
6782
6783         PR libstdc++/108822
6784         * include/std/tuple (tuple): Add checks for dangling references.
6785         Reimplement constraints and constant expressions using C++20
6786         features.
6787         * include/std/type_traits [C++20]
6788         (__is_implicitly_default_constructible_v): Define.
6789         (__is_implicitly_default_constructible): Use variable template.
6790         * testsuite/20_util/tuple/dangling_ref.cc: New test.
6791
6792 2024-01-13  Patrick Palka  <ppalka@redhat.com>
6793
6794         PR libstdc++/108827
6795         PR libstdc++/111327
6796         * include/bits/version.def (bind_back): Define.
6797         * include/bits/version.h: Regenerate.
6798         * include/std/functional (_Bind_back): Define for C++23.
6799         (bind_back): Likewise.
6800         * testsuite/20_util/function_objects/bind_back/1.cc: New test
6801         (adapted from corresponding bind_front test).
6802         * testsuite/20_util/function_objects/bind_back/111327.cc: Likewise.
6803
6804 2024-01-13  Patrick Palka  <ppalka@redhat.com>
6805
6806         * include/std/functional (_Bind_front): Remove =default special
6807         member function declarations.
6808         (_Bind_front::operator()): Implement using C++23 deducing this
6809         when available.
6810         * testsuite/20_util/function_objects/bind_front/111327.cc:
6811         Adjust testcase to expect better errors in C++23 mode.
6812
6813 2024-01-13  Patrick Palka  <ppalka@redhat.com>
6814
6815         * include/std/ranges (views::__adaptor::operator|): Perform
6816         perfect forwarding of arguments.
6817         (views::__adaptor::_RangeAdaptor::operator()): Pass dummy
6818         first argument to _Partial.
6819         (views::__adaptor::_Partial::_Partial): Likewise.  Add dummy
6820         first parameter.
6821         (views::__adaptor::_Pipe::_Pipe): Perform perfect forwarding
6822         of arguments.
6823         (to): Pass dummy first argument to _Partial.
6824
6825 2024-01-13  Jonathan Wakely  <jwakely@redhat.com>
6826
6827         PR libstdc++/107466
6828         * include/bits/random.tcc (subtract_with_carry_engine::seed):
6829         Implement proposed resolution of LWG 4014.
6830         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
6831         line number.
6832         * testsuite/26_numerics/random/subtract_with_carry_engine/cons/lwg3809.cc:
6833         Check for expected result of 64-bit engine with seed that
6834         doesn't fit in 32-bits.
6835
6836 2024-01-12  Jonathan Wakely  <jwakely@redhat.com>
6837
6838         PR libstdc++/113320
6839         * include/std/format (__format::_Runtime_format_string): Add
6840         constructor and disable copy operations.
6841         (basic_format_string(_Runtime_format_string)): Add noexcept and
6842         take parameter by value not rvalue reference.
6843         (runtime_format): Add noexcept.
6844         * testsuite/std/format/runtime_format.cc: Check noexcept. Check
6845         that construction is only possible from prvalues, not xvalues.
6846
6847 2024-01-12  Jonathan Wakely  <jwakely@redhat.com>
6848
6849         PR libstdc++/105505
6850         * include/bits/stl_pair.h (pair::pair(U1&&, U2&&)) [C++23]: Add
6851         default template arguments, as per P1951R1.
6852         * testsuite/20_util/pair/cons/default_tmpl_args.cc: New test.
6853
6854 2024-01-12  Jonathan Wakely  <jwakely@redhat.com>
6855
6856         * include/std/format (__format::_Arg_store): Fix PR number in
6857         comment. Simplify preprocessor code.
6858
6859 2024-01-11  Jonathan Wakely  <jwakely@redhat.com>
6860
6861         * doc/xml/manual/evolution.xml: Fix spelling.
6862         * doc/html/manual/api.html: Regenerate.
6863
6864 2024-01-11  Jonathan Wakely  <jwakely@redhat.com>
6865
6866         * doc/xml/manual/evolution.xml: Document addition of
6867         libstdc++exp.a.
6868         * doc/html/*: Regenerate.
6869
6870 2024-01-11  Marcus Haehnel  <marcus.haehnel@kernkonzept.com>
6871
6872         * libsupc++/eh_unex_handler.cc: Adjust definition type to
6873         declaration.
6874
6875 2024-01-11  Michael Levine  <mlevine55@bloomberg.net>
6876
6877         * include/std/ranges (__glibcxx_want_ranges_iota): Remove
6878         duplicate definition.
6879
6880 2024-01-11  François Dumont  <fdumont@gcc.gnu.org>
6881
6882         PR libstdc++/112477
6883         * src/c++11/debug.cc
6884         (_Safe_iterator_base::_M_attach): Reset _M_version to 0 if attaching to null
6885         sequence.
6886         (_Safe_iterator_base::_M_attach_single): Likewise.
6887         (_Safe_local_iterator_base::_M_attach): Likewise.
6888         (_Safe_local_iterator_base::_M_attach_single): Likewise.
6889         * testsuite/23_containers/map/debug/112477.cc: New test case.
6890
6891 2024-01-11  Patrick Palka  <ppalka@redhat.com>
6892
6893         * include/bits/move.h (__like_t): Define in C++23 mode.
6894         * include/std/ranges (views::__adaptor::Partial::operator()):
6895         Implement using C++23 deducing this when available.
6896         (views::__adaptor::_Pipe::operator()): Likewise.
6897         * testsuite/std/ranges/adaptors/100577.cc: Adjust testcase to
6898         accept new "no match for call" errors issued in C++23 mode.
6899         * testsuite/std/ranges/adaptors/lazy_split_neg.cc: Likewise.
6900
6901 2024-01-11  Jonathan Wakely  <jwakely@redhat.com>
6902
6903         * python/libstdcxx/v6/printers.py (StdIntegralConstantPrinter):
6904         Add printer for std::integral_constant.
6905         * testsuite/libstdc++-prettyprinters/cxx11.cc: Test it.
6906
6907 2024-01-11  Jonathan Wakely  <jwakely@redhat.com>
6908
6909         PR libstdc++/113258
6910         * libsupc++/new_opa.cc: Prefer to use posix_memalign if
6911         available.
6912
6913 2024-01-11  Ken Matsui  <kmatsui@gcc.gnu.org>
6914
6915         * src/filesystem/ops-common.h (stat_type): Use using.
6916
6917 2024-01-11  Ken Matsui  <kmatsui@gcc.gnu.org>
6918
6919         PR libstdc++/113250
6920         * src/c++17/fs_ops.cc (fs::equivalent): Use || instead of &&.
6921         * src/filesystem/ops.cc (fs::equivalent): Likewise.
6922         * testsuite/27_io/filesystem/operations/equivalent.cc: Handle
6923         error codes.
6924         * testsuite/experimental/filesystem/operations/equivalent.cc:
6925         Likewise.
6926
6927 2024-01-11  Ken Matsui  <kmatsui@gcc.gnu.org>
6928
6929         * include/std/type_traits (is_compound): Do not use __not_.
6930         (is_compound_v): Use is_fundamental_v instead.
6931
6932 2024-01-11  Patrick Palka  <ppalka@redhat.com>
6933
6934         * include/bits/utility.h (_Nth_type): Use
6935         _GLIBCXX_USE_BUILTIN_TRAIT instead of __has_builtin.
6936
6937 2024-01-09  Jonathan Wakely  <jwakely@redhat.com>
6938
6939         * include/bits/unicode-data.h: Regenerate.
6940         * include/bits/unicode.h (_Utf_iterator::operator++()): Fix off
6941         by one error.
6942         (__incb_property): Add missing check for values before the
6943         first edge.
6944         (__is_extended_pictographic): Invert return values to fix
6945         copy&pasted logic.
6946         (_Grapheme_cluster_view::_Iterator): Remove second iterator
6947         member and find end of cluster lazily.
6948         * testsuite/ext/unicode/grapheme_view.cc: New test.
6949         * testsuite/ext/unicode/properties.cc: New test.
6950         * testsuite/ext/unicode/view.cc: New test.
6951
6952 2024-01-09  Andreas Schwab  <schwab@linux-m68k.org>
6953
6954         * scripts/extract_symvers.in: Require final colon to only match
6955         .dsynsym in the header of the dynamic symtab.
6956
6957 2024-01-09  Jonathan Wakely  <jwakely@redhat.com>
6958
6959         * include/bits/chrono_io.h (__formatter_chrono::_M_F): Simplify
6960         handling of string returned from std::format.
6961         (__formatter_chrono::_M_R_T): Likewise.
6962
6963 2024-01-08  Jonathan Wakely  <jwakely@redhat.com>
6964
6965         * include/bits/unicode.h (__null_sentinel): Remove.
6966         * testsuite/17_intro/names.cc: Add __null_sentinel.
6967
6968 2024-01-08  Jonathan Wakely  <jwakely@redhat.com>
6969
6970         * include/std/format (__format::_Runtime_format_string): Define
6971         new class template.
6972         (basic_format_string): Add non-consteval constructor for runtime
6973         format strings.
6974         (runtime_format): Define new function for C++26.
6975         * testsuite/std/format/runtime_format.cc: New test.
6976
6977 2024-01-08  Jonathan Wakely  <jwakely@redhat.com>
6978
6979         * include/bits/chrono_io.h (__formatter_chrono): Always use
6980         lvalue arguments to make_format_args.
6981         * include/std/format (make_format_args): Change parameter pack
6982         from forwarding references to lvalue references. Remove use of
6983         remove_reference_t which is now unnecessary.
6984         (format_to, formatted_size): Remove incorrect forwarding of
6985         arguments.
6986         * include/std/ostream (print): Remove forwarding of arguments.
6987         * include/std/print (print): Likewise.
6988         * testsuite/20_util/duration/io.cc: Use lvalues as arguments to
6989         make_format_args.
6990         * testsuite/std/format/arguments/args.cc: Likewise.
6991         * testsuite/std/format/arguments/lwg3810.cc: Likewise.
6992         * testsuite/std/format/functions/format.cc: Likewise.
6993         * testsuite/std/format/functions/vformat_to.cc: Likewise.
6994         * testsuite/std/format/string.cc: Likewise.
6995         * testsuite/std/time/day/io.cc: Likewise.
6996         * testsuite/std/time/month/io.cc: Likewise.
6997         * testsuite/std/time/weekday/io.cc: Likewise.
6998         * testsuite/std/time/year/io.cc: Likewise.
6999         * testsuite/std/time/year_month_day/io.cc: Likewise.
7000         * testsuite/std/format/arguments/args_neg.cc: New test.
7001
7002 2024-01-08  Jonathan Wakely  <jwakely@redhat.com>
7003
7004         * include/Makefile.am: Add new headers.
7005         * include/Makefile.in: Regenerate.
7006         * include/bits/unicode.h: New file.
7007         * include/bits/unicode-data.h: New file.
7008         * include/std/format: Include <bits/unicode.h>.
7009         (__literal_encoding_is_utf8): Move to <bits/unicode.h>.
7010         (_Spec::_M_fill): Change type to char32_t.
7011         (_Spec::_M_parse_fill_and_align): Read a Unicode scalar value
7012         instead of a single character.
7013         (__write_padded): Change __fill_char parameter to char32_t and
7014         encode it into the output.
7015         (__formatter_str::format): Use new __unicode::__field_width and
7016         __unicode::__truncate functions.
7017         * include/std/ostream: Adjust namespace qualification for
7018         __literal_encoding_is_utf8.
7019         * include/std/print: Likewise.
7020         * src/c++23/print.cc: Add [[unlikely]] attribute to error path.
7021         * testsuite/ext/unicode/view.cc: New test.
7022         * testsuite/std/format/functions/format.cc: Add missing examples
7023         from the standard demonstrating alignment with non-ASCII
7024         characters. Add examples checking correct handling of extended
7025         grapheme clusters.
7026
7027 2024-01-08  Jonathan Wakely  <jwakely@redhat.com>
7028
7029         * include/bits/version.def (format_uchar): Define.
7030         * include/bits/version.h: Regenerate.
7031         * include/std/format (formatter<C, C>::format): Check for
7032         _Pres_c and call _M_format_character directly. Cast C to its
7033         unsigned equivalent for formatting as an integer.
7034         (formatter<char, wchar_t>::format): Likewise.
7035         (basic_format_arg(T&)): Store char arguments as unsigned char
7036         for formatting to a wide string.
7037         * testsuite/std/format/functions/format.cc: Adjust test. Check
7038         formatting of
7039
7040 2024-01-07  Jonathan Wakely  <jwakely@redhat.com>
7041
7042         PR libstdc++/112997
7043         * libsupc++/unwind-cxx.h (__cxa_call_terminate): Change first
7044         parameter to void*.
7045
7046 2024-01-07  Jonathan Wakely  <jwakely@redhat.com>
7047
7048         * testsuite/20_util/variant/87619.cc: Remove dg-timeout-factor.
7049
7050 2024-01-07  Jonathan Wakely  <jwakely@redhat.com>
7051
7052         * include/std/type_traits (is_trivially_destructible_v): Use
7053         built-in directly when concepts are supported.
7054         * testsuite/20_util/is_trivially_destructible/value_v.cc: New
7055         test.
7056
7057 2024-01-06  Gwenole Beauchesne  <gb.devel@gmail.com>
7058
7059         * testsuite/tr1/8_c_compatibility/cinttypes/functions.cc: Use
7060         nonnull arguments to strtoimax() and wcstoimax() functions.
7061
7062 2024-01-05  Jonathan Wakely  <jwakely@redhat.com>
7063
7064         * src/c++17/fs_path.cc (path::_List::reserve): Limit maximum
7065         size and check for overflows in arithmetic.
7066         (path::operator/=(const path&)): Remove redundant exponential
7067         growth calculation.
7068
7069 2024-01-05  Martin Küttler  <martin.kuettler@kernkonzept.com>
7070
7071         * src/c++17/fs_path.cc (path::_List::reserve): Avoid
7072         floating-point arithmetic.
7073
7074 2024-01-05  Jonathan Wakely  <jwakely@redhat.com>
7075
7076         PR libstdc++/113241
7077         * include/std/type_traits (is_convertible_v): Guard use of
7078         built-in with preprocessor check.
7079
7080 2024-01-05  Jonathan Wakely  <jwakely@redhat.com>
7081
7082         PR libstdc++/113200
7083         * include/bits/char_traits.h (__gnu_cxx::char_traits::move): Use
7084         __builtin_constant_p to check for unrelated pointers that cannot
7085         be compared during constant evaluation.
7086         * testsuite/21_strings/char_traits/requirements/113200.cc: New
7087         test.
7088
7089 2024-01-05  Cassio Neri  <cassio.neri@gmail.com>
7090
7091         * include/std/chrono: Fix + and - for months and weekdays.
7092         * testsuite/std/time/month/1.cc: Add constexpr tests against overflow.
7093         * testsuite/std/time/month/2.cc: New test for extreme values.
7094         * testsuite/std/time/weekday/1.cc: Add constexpr tests against overflow.
7095         * testsuite/std/time/weekday/2.cc: New test for extreme values.
7096
7097 2024-01-05  Jonathan Wakely  <jwakely@redhat.com>
7098
7099         PR libstdc++/113099
7100         * include/bits/locale_classes.tcc (__try_use_facet): Use
7101         if-constexpr for C++11 and up.
7102
7103 2024-01-05  Ken Matsui  <kmatsui@gcc.gnu.org>
7104
7105         * include/std/type_traits: Use _GLIBCXX_USE_BUILTIN_TRAIT.
7106
7107 2024-01-04  Arsen Arsenović  <arsen@aarsen.me>
7108
7109         * include/std/generator (_Subyield_state::_M_jump_in): Fix typo
7110         reported by Will Hawkins <hawkinsw@obs.cr>.
7111
7112 2024-01-04  Arsen Arsenović  <arsen@aarsen.me>
7113
7114         * include/std/generator (_Stateless_alloc): Rename typename _A
7115         to _All.
7116
7117 2024-01-03  Patrick Palka  <ppalka@redhat.com>
7118
7119         PR testsuite/113175
7120         * testsuite/std/ranges/iota/max_size_type.cc (test02): Reduce
7121         'limit' to 100 from 1000 and adjust 'log2_limit' accordingly.
7122         (test03): Likewise.
7123
7124 \f
7125 Copyright (C) 2024 Free Software Foundation, Inc.
7126
7127 Copying and distribution of this file, with or without modification,
7128 are permitted in any medium without royalty provided the copyright
7129 notice and this notice are preserved.