libstdc++-v3/ChangeLog

   1 2021-04-15  Jonathan Wakely  <jwakely@redhat.com>
   2
   3         * testsuite/lib/dg-options.exp (add_options_for_libatomic): Also
   4         add libatomic options for 32-bit sparc*-*-linux-gnu.
   5
   6 2021-04-15  Jonathan Wakely  <jwakely@redhat.com>
   7
   8         PR libstdc++/96657
   9         * libsupc++/Makefile.am: Add atomicity.cc here.
  10         * src/c++98/Makefile.am: Remove it from here.
  11         * libsupc++/Makefile.in: Regenerate.
  12         * src/c++98/Makefile.in: Regenerate.
  13         * testsuite/18_support/exception_ptr/96657.cc: New test.
  14
  15 2021-04-13  Jonathan Wakely  <jwakely@redhat.com>
  16
  17         PR libstdc++/100060
  18         * include/std/bit: Only include <ext/numeric_traits.h> for
  19         hosted build, use <limits> otherwise.
  20
  21 2021-04-13  Jonathan Wakely  <jwakely@redhat.com>
  22
  23         * doc/xml/manual/backwards_compatibility.xml: Remove porting
  24         notes for libg++ and libstdc++-v2, and bibliography.
  25         * doc/html/*: Regenerated.
  26
  27 2021-04-12  Jonathan Wakely  <jwakely@redhat.com>
  28
  29         PR libstdc++/100044
  30         * include/bits/ranges_util.h (__detail::__iterator_sentinel_pair):
  31         Remove helper concept.
  32         (subrange(_Pr), subrange(Pr, __make_unsigned_like<...>)): Remove
  33         deduction guides, as per LWG 3404.
  34         * testsuite/std/ranges/subrange/lwg3282_neg.cc: Check that class
  35         template argument deduction fails.
  36
  37 2021-04-12  Jonathan Wakely  <jwakely@redhat.com>
  38
  39         * testsuite/26_numerics/random/linear_congruential_engine/requirements/non_uint_neg.cc:
  40         Adjust expected error for C++20 mode.
  41         * testsuite/tr1/5_numerical_facilities/random/linear_congruential/requirements/non_uint_neg.cc:
  42         Likewise.
  43
  44 2021-04-12  Jonathan Wakely  <jwakely@redhat.com>
  45
  46         PR libstdc++/99995
  47         * testsuite/17_intro/headers/c++1998/49745.cc: Include all
  48         standard headers and XFAIL for effective-target c++20.
  49
  50 2021-04-09  François Dumont  <fdumont@gcc.gnu.org>
  51
  52         PR libstdc++/99402
  53         * include/debug/helper_functions.h (__can_advance(_InputIterator,
  54         const std::pair<_Diff, _Distance_precision>&, int)): New.
  55         (__can_advance(const _Safe_iterator<>&,
  56         const std::pair<_Diff, _Distance_precision>&, int)): New.
  57         * include/debug/macros.h (__glibcxx_check_can_increment_dist): New,
  58         use latter.
  59         (__glibcxx_check_can_increment_range): Adapt to use latter.
  60         (__glibcxx_check_can_decrement_range): Likewise.
  61         * include/debug/safe_iterator.h
  62         (_Safe_iterator<>::_M_can_advance(const std::pair<_Diff, _Distance_precision>&,
  63         int)): New.
  64         (__can_advance(const _Safe_iterator<>&,
  65         const std::pair<_Diff, _Distance_precision>&, int)): New.
  66         * include/debug/safe_iterator.tcc
  67         (_Safe_iterator<>::_M_can_advance(const std::pair<_Diff, _Distance_precision>&,
  68         int)): New.
  69         (_Safe_iterator<>::_M_valid_range(const _Safe_iterator<>&,
  70         std::pair<difference_type, _Distance_precision>&, bool)): Adapt for
  71         __dp_sign_max_size.
  72         (__copy_move_a): Adapt to use __glibcxx_check_can_increment_dist.
  73         (__copy_move_backward_a): Likewise.
  74         (__equal_aux): Likewise.
  75         * include/debug/stl_iterator.h (__can_advance(const std::reverse_iterator<>&,
  76         const std::pair<_Diff, _Distance_precision>&, int)): New.
  77         (__can_advance(const std::move_iterator<>&,
  78         const std::pair<_Diff, _Distance_precision>&, int)): New.
  79         * testsuite/25_algorithms/copy/debug/99402.cc: New test.
  80
  81 2021-04-09  Jonathan Wakely  <jwakely@redhat.com>
  82
  83         PR libstdc++/99985
  84         * include/bits/hashtable.h (_Hashtable::_S_nothrow_move()): Fix
  85         to be a valid constexpr function in C++11.
  86         * testsuite/23_containers/unordered_set/cons/99985.cc: New test.
  87
  88 2021-04-09  Jonathan Wakely  <jwakely@redhat.com>
  89
  90         * include/bits/fs_fwd.h: Fix doxygen group command.
  91         * include/bits/streambuf_iterator.h: Likewise.
  92         * include/bits/uses_allocator_args.h: Likewise.
  93         * include/std/memory: Likewise.
  94         * include/tr1/complex: Likewise.
  95
  96 2021-04-08  Jonathan Wakely  <jwakely@redhat.com>
  97
  98         * include/bits/basic_string.h: Tweak doxygen comment.
  99
 100 2021-04-08  Patrick Palka  <ppalka@redhat.com>
 101
 102         * include/std/ranges (__detail::find): Define.
 103         (split_view::_OuterIter::operator++): Apply proposed resolution
 104         of LWG 3505.
 105         * testsuite/std/ranges/adaptors/split.cc (test10): New test.
 106
 107 2021-04-08  Patrick Palka  <ppalka@redhat.com>
 108
 109         * include/std/ranges (__detail::find_if): Simplify.
 110         (__detail::find_if_not): Likewise.
 111         (__detail::min): Remove.
 112         (__detail::mismatch): Simplify.
 113         (take_view::size): Use std::min instead of __detail::min.
 114
 115 2021-04-08  Patrick Palka  <ppalka@redhat.com>
 116
 117         * include/std/ranges (__detail::__returnable_element): New
 118         concept.
 119         (elements_view): Use this concept in its constraints.  Add
 120         missing private access specifier.
 121         (elements_view::_S_get_element): Define as per LWG 3502.
 122         (elements_view::operator*, elements_view::operator[]): Use
 123         _S_get_element.
 124         (elements_view::operator++): Remove unnecessary constraint
 125         as per LWG 3492.
 126         * testsuite/std/ranges/adaptors/elements.cc (test05): New test.
 127
 128 2021-04-08  Jonathan Wakely  <jwakely@redhat.com>
 129
 130         * doc/Makefile.am (stamp-pdf-doxygen): Also grep for
 131         out-of-memory error in log file.
 132         * doc/Makefile.in: Regenerate.
 133
 134 2021-04-08  Jonathan Wakely  <jwakely@redhat.com>
 135
 136         * configure: Regenerate.
 137
 138 2021-04-08  Jonathan Wakely  <jwakely@redhat.com>
 139
 140         * include/bits/random.h: Fix doxygen group commands.
 141         * include/bits/regex_constants.h: Likewise.
 142         * include/tr1/random.h: Likewise.
 143
 144 2021-04-08  Jonathan Wakely  <jwakely@redhat.com>
 145
 146         * include/bits/hashtable.h (_Hashtable::_S_nothrow_move()):
 147         New function to determine noexcept-specifier for move
 148         constructors.
 149         (_Hashtable): Use _S_nothrow_move() on move constructors.
 150         * testsuite/23_containers/unordered_map/cons/noexcept_move_construct.cc:
 151         Correct static assertion message.
 152         * testsuite/23_containers/unordered_multimap/cons/noexcept_move_construct.cc:
 153         Likewise.
 154         * testsuite/23_containers/unordered_multiset/cons/noexcept_move_construct.cc:
 155         Likewise.
 156         * testsuite/23_containers/unordered_set/cons/noexcept_move_construct.cc:
 157         Likewise.
 158
 159 2021-04-08  Patrick Palka  <ppalka@redhat.com>
 160
 161         PR libstdc++/98384
 162         * testsuite/20_util/to_chars/long_double.cc: Don't run the test
 163         on targets without a large long double.  XFAIL the execution on
 164         targets with a non-conforming printf.
 165
 166 2021-04-08  Patrick Palka  <ppalka@redhat.com>
 167
 168         PR libstdc++/99433
 169         * include/std/ranges (__adaptor::__maybe_refwrap): Remove.
 170         (__adaptor::__adaptor_invocable): New concept.
 171         (__adaptor::__adaptor_partial_app_viable): New concept.
 172         (__adaptor::_RangeAdaptorClosure): Rewrite, turning it into a
 173         non-template base class.
 174         (__adaptor::_RangeAdaptor): Rewrite, turning it into a CRTP base
 175         class template.
 176         (__adaptor::_Partial): New class template that represents
 177         partial application of a range adaptor non-closure.
 178         (__adaptor::__pipe_invocable): New concept.
 179         (__adaptor::_Pipe): New class template.
 180         (__detail::__can_ref_view): New concept.
 181         (__detail::__can_subrange): New concept.
 182         (all): Replace the lambda here with ...
 183         (_All): ... this functor.  Add appropriate constraints.
 184         (__detail::__can_filter_view): New concept.
 185         (filter, _Filter): As in all/_All.
 186         (__detail::__can_transform): New concept.
 187         (transform, _Transform): As in all/_All.
 188         (__detail::__can_take_view): New concept.
 189         (take, _Take): As in all/_All.
 190         (__detail::__can_take_while_view): New concept.
 191         (take_while, _TakeWhile): As in all/_All.
 192         (__detail::__can_drop_view): New concept.
 193         (drop, _Drop): As in all/_All.
 194         (__detail::__can_drop_while_view): New concept.
 195         (drop_while, _DropWhile): As in all/_All.
 196         (__detail::__can_join_view): New concept.
 197         (join, _Join): As in all/_All.
 198         (__detail::__can_split_view): New concept.
 199         (split, _Split): As in all/_All.  Rename template parameter
 200         _Fp to _Pattern.
 201         (__detail::__already_common): New concept.
 202         (__detail::__can_common_view): New concept.
 203         (common, _Common): As in all/_All.
 204         (__detail::__can_reverse_view): New concept.
 205         (reverse, _Reverse): As in all/_All.
 206         (__detail::__can_elements_view): New concept.
 207         (elements, _Elements): As in all/_All.
 208         (keys, values): Adjust.
 209         * testsuite/std/ranges/adaptors/99433.cc: New test.
 210         * testsuite/std/ranges/adaptors/all.cc: No longer expect that
 211         adding empty range adaptor closure objects to a pipeline doesn't
 212         increase the size of the pipeline.
 213         (test05): New test.
 214         * testsuite/std/ranges/adaptors/common.cc (test03): New test.
 215         * testsuite/std/ranges/adaptors/drop.cc (test09): New test.
 216         * testsuite/std/ranges/adaptors/drop_while.cc (test04): New test.
 217         * testsuite/std/ranges/adaptors/elements.cc (test04): New test.
 218         * testsuite/std/ranges/adaptors/filter.cc (test06): New test.
 219         * testsuite/std/ranges/adaptors/join.cc (test09): New test.
 220         * testsuite/std/ranges/adaptors/p2281.cc: New test.
 221         * testsuite/std/ranges/adaptors/reverse.cc (test07): New test.
 222         * testsuite/std/ranges/adaptors/split.cc (test01, test04):
 223         Adjust.
 224         (test09): New test.
 225         * testsuite/std/ranges/adaptors/split_neg.cc (test01): Adjust
 226         expected error message.
 227         (test02): Likewise.  Extend test.
 228         * testsuite/std/ranges/adaptors/take.cc (test06): New test.
 229         * testsuite/std/ranges/adaptors/take_while.cc (test05): New test.
 230         * testsuite/std/ranges/adaptors/transform.cc (test07, test08):
 231         New test.
 232
 233 2021-04-08  Jonathan Wakely  <jwakely@redhat.com>
 234
 235         * include/std/string_view: Adjust Doxygen @file comment.
 236
 237 2021-04-08  Jonathan Wakely  <jwakely@redhat.com>
 238
 239         * include/std/type_traits (is_scoped_enum<T>): Constrain partial
 240         specialization to not match incomplete enum types. Use a
 241         requires-expression instead of instantiating is_convertible.
 242         (is_scoped_enum<const T>): Add as workaround for PR c++/99968.
 243         * testsuite/20_util/is_scoped_enum/value.cc: Check with
 244         incomplete types and opaque-enum-declarations.
 245
 246 2021-04-07  Jonathan Wakely  <jwakely@redhat.com>
 247
 248         PR libstdc++/99805
 249         * src/c++17/fs_path.cc (path::_M_split_cmpts): Do not call
 250         non-const member on _M_pathname, to avoid copy-on-write.
 251         * testsuite/27_io/filesystem/path/decompose/parent_path.cc:
 252         Check construction from strings that might be shared.
 253
 254 2021-04-06  Jonathan Wakely  <jwakely@redhat.com>
 255
 256         * include/bits/move.h (forward, move, move_if_noexcept)
 257         (addressof): Add _GLIBCXX_NODISCARD.
 258         * include/bits/ranges_cmp.h (identity::operator()): Add
 259         nodiscard attribute.
 260         * include/c_global/cstddef (to_integer): Likewise.
 261         * include/std/bit (bit_cast): Likewise.
 262         * include/std/utility (as_const, to_underlying): Likewise.
 263
 264 2021-04-06  Jonathan Wakely  <jwakely@redhat.com>
 265
 266         * include/bits/move.h (forward): Change static_assert message
 267         to be unambiguous about what must be true.
 268         * testsuite/20_util/forward/c_neg.cc: Adjust dg-error.
 269         * testsuite/20_util/forward/f_neg.cc: Likewise.
 270
 271 2021-04-06  Jonathan Wakely  <jwakely@redhat.com>
 272
 273         * include/bits/alloc_traits.h: Use markdown for code font.
 274         * include/bits/basic_string.h: Fix @param names.
 275         * include/bits/max_size_type.h: Remove period after @file.
 276         * include/bits/regex.h: Fix duplicate @retval names, and rename.
 277         * include/ext/pb_ds/detail/priority_queue_base_dispatch.hpp: Add
 278         group open to match existing group close.
 279         * include/ext/pb_ds/priority_queue.hpp: Add blank line before group
 280         open.
 281
 282 2021-04-06  Jonathan Wakely  <jwakely@redhat.com>
 283
 284         * include/bits/atomic_base.h: Fix doxygen group close.
 285         * include/bits/basic_ios.h: Likewise.
 286         * include/bits/forward_list.h: Likewise.
 287         * include/bits/fs_dir.h: Likewise.
 288         * include/bits/fs_ops.h: Likewise.
 289         * include/bits/fs_path.h: Likewise.
 290         * include/bits/functional_hash.h: Likewise.
 291         * include/bits/gslice.h: Likewise.
 292         * include/bits/gslice_array.h: Likewise.
 293         * include/bits/hashtable_policy.h: Likewise.
 294         * include/bits/indirect_array.h: Likewise.
 295         * include/bits/locale_classes.h: Likewise.
 296         * include/bits/locale_facets.h: Likewise.
 297         * include/bits/locale_facets_nonio.h: Likewise.
 298         * include/bits/mask_array.h: Likewise.
 299         * include/bits/refwrap.h: Likewise.
 300         * include/bits/regex.h: Likewise.
 301         * include/bits/regex_automaton.h: Likewise.
 302         * include/bits/regex_compiler.h: Likewise.
 303         * include/bits/regex_constants.h: Likewise.
 304         * include/bits/regex_error.h: Likewise.
 305         * include/bits/regex_executor.h: Likewise.
 306         * include/bits/regex_scanner.h: Likewise.
 307         * include/bits/shared_ptr.h: Likewise.
 308         * include/bits/shared_ptr_atomic.h: Likewise.
 309         * include/bits/shared_ptr_base.h: Likewise.
 310         * include/bits/slice_array.h: Likewise.
 311         * include/bits/specfun.h: Likewise.
 312         * include/bits/std_function.h: Likewise.
 313         * include/bits/std_mutex.h: Likewise.
 314         * include/bits/stl_deque.h: Likewise.
 315         * include/bits/stl_iterator.h: Likewise.
 316         * include/bits/stl_iterator_base_types.h: Likewise.
 317         * include/bits/stl_map.h: Likewise.
 318         * include/bits/stl_multimap.h: Likewise.
 319         * include/bits/stl_multiset.h: Likewise.
 320         * include/bits/stl_numeric.h: Likewise.
 321         * include/bits/stl_pair.h: Likewise.
 322         * include/bits/stl_set.h: Likewise.
 323         * include/bits/stl_uninitialized.h: Likewise.
 324         * include/bits/stream_iterator.h: Likewise.
 325         * include/bits/streambuf_iterator.h: Likewise.
 326         * include/bits/unique_ptr.h: Likewise.
 327         * include/bits/unordered_map.h: Likewise.
 328         * include/bits/unordered_set.h: Likewise.
 329         * include/decimal/decimal: Likewise.
 330         * include/experimental/any: Likewise.
 331         * include/experimental/array: Likewise.
 332         * include/experimental/bits/fs_dir.h: Likewise.
 333         * include/experimental/bits/fs_fwd.h: Likewise.
 334         * include/experimental/bits/fs_ops.h: Likewise.
 335         * include/experimental/bits/fs_path.h: Likewise.
 336         * include/experimental/buffer: Likewise.
 337         * include/experimental/internet: Likewise.
 338         * include/experimental/optional: Likewise.
 339         * include/experimental/propagate_const: Likewise.
 340         * include/experimental/socket: Likewise.
 341         * include/ext/pb_ds/assoc_container.hpp: Likewise.
 342         * include/ext/pb_ds/detail/priority_queue_base_dispatch.hpp:
 343         Likewise.
 344         * include/ext/pb_ds/detail/tree_policy/node_metadata_selector.hpp: Likewise.
 345         * include/ext/pb_ds/detail/trie_policy/node_metadata_selector.hpp: Likewise.
 346         * include/ext/pb_ds/detail/types_traits.hpp: Likewise.
 347         * include/ext/pb_ds/exception.hpp: Likewise.
 348         * include/ext/pb_ds/priority_queue.hpp: Likewise.
 349         * include/ext/pb_ds/tag_and_trait.hpp: Likewise.
 350         * include/ext/random: Likewise.
 351         * include/std/any: Likewise.
 352         * include/std/atomic: Likewise.
 353         * include/std/bitset: Likewise.
 354         * include/std/chrono: Likewise.
 355         * include/std/complex: Likewise.
 356         * include/std/condition_variable: Likewise.
 357         * include/std/fstream: Likewise.
 358         * include/std/future: Likewise.
 359         * include/std/iostream: Likewise.
 360         * include/std/istream: Likewise.
 361         * include/std/mutex: Likewise.
 362         * include/std/numeric: Likewise.
 363         * include/std/ostream: Likewise.
 364         * include/std/ratio: Likewise.
 365         * include/std/shared_mutex: Likewise.
 366         * include/std/stdexcept: Likewise.
 367         * include/std/streambuf: Likewise.
 368         * include/std/system_error: Likewise.
 369         * include/std/thread: Likewise.
 370         * include/std/valarray: Likewise.
 371         * include/std/variant: Likewise.
 372         * include/tr1/cmath: Likewise.
 373         * include/tr1/regex: Likewise.
 374         * include/tr2/dynamic_bitset: Likewise.
 375         * libsupc++/atomic_lockfree_defines.h: Likewise.
 376         * libsupc++/exception: Likewise.
 377         * libsupc++/exception.h: Likewise.
 378         * libsupc++/exception_ptr.h: Likewise.
 379         * libsupc++/nested_exception.h: Likewise.
 380
 381 2021-03-31  Alexandre Oliva  <oliva@adacore.com>
 382
 383         * testsuite/30_threads/future/members/poll.cc: Use faster
 384         after-ready call in the calibration loop.
 385
 386 2021-03-29  Jonathan Wakely  <jwakely@redhat.com>
 387
 388         * doc/xml/manual/status_cxx2017.xml: Adjust link for PSTL.
 389         * doc/html/manual/status.html: Regenerate.
 390
 391 2021-03-28  François Dumont  <fdumont@gcc.gnu.org>
 392
 393         * include/debug/forward_list
 394         (forward_list(forward_list&&, const allocator_type&)): Add noexcept qualification.
 395         * include/debug/list (list(list&&, const allocator_type&)): Likewise and add
 396         call to safe container allocator aware move constructor.
 397         * include/debug/vector (vector(vector&&, const allocator_type&)):
 398         Fix noexcept qualification.
 399         * testsuite/23_containers/forward_list/cons/noexcept_move_construct.cc:
 400         Add allocator-extended move constructor noexceot qualification check.
 401         * testsuite/23_containers/list/cons/noexcept_move_construct.cc: Likewise.
 402
 403 2021-03-26  Jonathan Wakely  <jwakely@redhat.com>
 404
 405         * src/c++11/random.cc (USE_LCG): Define when a pseudo-random
 406         fallback is needed.
 407         [USE_LCG] (bad_seed, construct_lcg_at, destroy_lcg_at, __lcg):
 408         New helper functions and callback.
 409         (random_device::_M_init): Add 'prng' and 'all' enumerators.
 410         Replace switch with fallthrough with a series of 'if' statements.
 411         [USE_LCG]: Construct an lcg_type engine and use __lcg when cpuid
 412         checks fail.
 413         (random_device::_M_init_pretr1) [USE_MT19937]: Accept "prng"
 414         token.
 415         (random_device::_M_getval): Check for callback unconditionally
 416         and always pass _M_file pointer.
 417         * testsuite/26_numerics/random/random_device/85494.cc: Remove
 418         effective-target check. Use new random_device_available helper.
 419         * testsuite/26_numerics/random/random_device/94087.cc: Likewise.
 420         * testsuite/26_numerics/random/random_device/cons/default-cow.cc:
 421         Remove effective-target check.
 422         * testsuite/26_numerics/random/random_device/cons/default.cc:
 423         Likewise.
 424         * testsuite/26_numerics/random/random_device/cons/token.cc: Use
 425         new random_device_available helper. Test "prng" token.
 426         * testsuite/util/testsuite_random.h (random_device_available):
 427         New helper function.
 428
 429 2021-03-25  François Dumont  <fdumont@gcc.gnu.org>
 430
 431         * include/debug/string
 432         (basic_string(const basic_string&, const _Alloc&)): Define even if !_GLIBCXX_USE_CXX11_ABI.
 433         (basic_string(basic_string&&, const _Alloc&)): Likewise and add noexcept qualification.
 434         (basic_string<>::erase): Adapt to take __const_iterator.
 435         (basic_string(const _CharT*, const _Allocator&)): Remove assign call.
 436         (basic_string<>::insert(const_iterator, _InputIte, _InputIte)): Try to
 437         remove iterator debug layer even if !_GLIBCXX_USE_CXX11_ABI.
 438         [_GLIBCXX_USE_CHAR8_T] (__gnu_debug::u8string): New.
 439         (__gnu_debug::u16string, __gnu_debug::u32string): New.
 440         (std::hash<__gnu_debug::basic_string<>>): New partial specialization.
 441         (std::__is_fast_hash<__gnu_debug::basic_string<>>): Likewise.
 442         * testsuite/util/exception/safety.h
 443         (erase_base<__gnu_debug::basic_string<>>): New partial specialization.
 444         (insert_base<__gnu_debug::basic_string<>>): Likewise.
 445         * testsuite/util/testsuite_container_traits.h (traits<__gnu_debug::basic_string<>>):
 446         New partial specialization.
 447         * testsuite/21_strings/basic_string/hash/debug.cc: New test.
 448         * testsuite/21_strings/basic_string/requirements/citerators.cc:
 449         Add test on __gnu_debug::string.
 450         * testsuite/21_strings/basic_string/requirements/dr438/constructor.cc: Likewise.
 451         * testsuite/21_strings/basic_string/requirements/exception/basic.cc: Likewise.
 452         * testsuite/21_strings/basic_string/requirements/exception/generation_prohibited.cc:
 453         Likewise.
 454         * testsuite/21_strings/basic_string/requirements/exception/propagation_consistent.cc:
 455         Likewise.
 456         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char/1.cc:
 457         Likewise.
 458         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char16_t/1.cc:
 459         Likewise.
 460         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char32_t/1.cc:
 461         Likewise.
 462         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char8_t/1.cc:
 463         Likewise.
 464         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/wchar_t/1.cc:
 465         Likewise.
 466         * testsuite/21_strings/basic_string/requirements/typedefs.cc: Likewise.
 467
 468 2021-03-25  Jakub Jelinek  <jakub@redhat.com>
 469
 470         PR c++/99672
 471         * testsuite/18_support/source_location/consteval.cc (main): Adjust
 472         expected column numbers.
 473         * testsuite/18_support/source_location/1.cc (main): Likewise.
 474
 475 2021-03-25  Jonathan Wakely  <jwakely@redhat.com>
 476
 477         * libsupc++/new_opa.cc [!_GLIBCXX_HOSTED]: Declare malloc.
 478
 479 2021-03-25  Jonathan Wakely  <jwakely@redhat.com>
 480
 481         * testsuite/util/exception/safety.h (setup_base::generate):
 482         Support seeding random engine.
 483         (erase_point, erase_range): Adjust range of random numbers to
 484         ensure dereferenceable iterators are used where required.
 485         (generation_prohibited::run): Do not try to erase from empty
 486         containers.
 487         * testsuite/util/testsuite_containergen.h (test_containers):
 488         Support seeding random engine.
 489
 490 2021-03-23  Jonathan Wakely  <jwakely@redhat.com>
 491
 492         * testsuite/std/ranges/adaptors/reverse.cc: Replace duplicated
 493         line with a check that uses the const being/end overloads.
 494
 495 2021-03-23  Moritz Sichert  <sichert@in.tum.de>
 496
 497         * include/std/ranges (reverse_view::begin, reverse_view::end):
 498         Qualify make_reverse_iterator calls to avoid ADL.
 499         * testsuite/std/ranges/adaptors/reverse.cc: Test that
 500         views::reverse works when make_reverse_iterator is defined
 501         in an associated namespace.
 502
 503 2021-03-23  Jonathan Wakely  <jwakely@redhat.com>
 504
 505         * include/bits/c++config (_GLIBCXX_LONG_DOUBLE_ALT128_COMPAT):
 506         Do not define when compiling with Clang.
 507
 508 2021-03-22  Jonathan Wakely  <jwakely@redhat.com>
 509
 510         * include/std/string_view (basic_string_view(Range&&)): Define new
 511         constructor and deduction guide.
 512         * testsuite/21_strings/basic_string_view/cons/char/range_c++20.cc: New test.
 513         * testsuite/21_strings/basic_string_view/cons/wchar_t/range_c++20.cc: New test.
 514
 515 2021-03-22  Jonathan Wakely  <jwakely@redhat.com>
 516
 517         * include/bits/range_access.h (begin(T (&)[N]), end(T (&)[N])):
 518         Add missing 'noexcept' as per LWG 2280.
 519         (rbegin(T (&)[N]), rend(T (&)[N]), rbegin(initializer_list<T>))
 520         (rend(initializer_list<T>)): Add 'noexcept' as per LWG 3537.
 521         * testsuite/24_iterators/range_access/range_access.cc: Check for
 522         expected noexcept specifiers. Check result types of generic
 523         std::begin and std::end overloads.
 524         * testsuite/24_iterators/range_access/range_access_cpp14.cc:
 525         Check for expected noexcept specifiers.
 526         * testsuite/24_iterators/range_access/range_access_cpp17.cc:
 527         Likewise.
 528
 529 2021-03-19  Jonathan Wakely  <jwakely@redhat.com>
 530
 531         * include/std/type_traits (is_scoped_enum): Define.
 532         * include/std/version (__cpp_lib_is_scoped_enum): Define.
 533         * testsuite/20_util/is_scoped_enum/value.cc: New test.
 534         * testsuite/20_util/is_scoped_enum/version.cc: New test.
 535
 536 2021-03-16  Jonathan Wakely  <jwakely@redhat.com>
 537
 538         PR libstdc++/99341
 539         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Remove
 540         std::once_flag symbols.
 541         * config/abi/post/ia64-linux-gnu/baseline_symbols.txt: Likewise.
 542         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Likewise.
 543         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt:
 544         Likewise.
 545         * config/abi/pre/gnu.ver: Likewise.
 546         * src/c++11/mutex.cc [_GLIBCXX_HAVE_LINUX_FUTEX]
 547         (struct __once_flag_compat): Remove.
 548         (_ZNSt9once_flag11_M_activateEv): Remove.
 549         (_ZNSt9once_flag9_M_finishEb): Remove.
 550
 551 2021-03-16  Jonathan Wakely  <jwakely@redhat.com>
 552
 553         PR libstdc++/99341
 554         * include/std/mutex [_GLIBCXX_HAVE_LINUX_FUTEX] (once_flag):
 555         Revert to pthread_once_t implementation.
 556         [_GLIBCXX_HAVE_LINUX_FUTEX] (call_once): Likewise.
 557         * src/c++11/mutex.cc [_GLIBCXX_HAVE_LINUX_FUTEX]
 558         (struct __once_flag_compat): New type matching the reverted
 559         implementation of once_flag using futexes.
 560         (once_flag::_M_activate): Remove, replace with ...
 561         (_ZNSt9once_flag11_M_activateEv): ... alias symbol.
 562         (once_flag::_M_finish): Remove, replace with ...
 563         (_ZNSt9once_flag9_M_finishEb): ... alias symbol.
 564         * testsuite/30_threads/call_once/66146.cc: Removed.
 565
 566 2021-03-15  Iain Sandoe  <iain@sandoe.co.uk>
 567
 568         * testsuite/17_intro/names.cc: Exclude j from the list
 569         of test symbols for Darwin.
 570
 571 2021-03-15  Iain Sandoe  <iain@sandoe.co.uk>
 572
 573         * config/os/bsd/darwin/ppc-extra.ver: Add matching for
 574         to_chars and from_chars for long double.
 575
 576 2021-03-15  Patrick Palka  <ppalka@redhat.com>
 577
 578         * include/bits/max_size_type.h (__max_size_type::operator _Tp):
 579         Fix formatting.
 580         (__max_size_type::operator++): Define.
 581         (__max_size_type::operator--): Likewise.
 582         (__max_size_type::operator<=>): Conditionally define (in place
 583         of the other comparison operators).
 584         (__max_diff_type::operator _Tp): Fix formatting.
 585         (__max_diff_type::operator++): Define.
 586         (__max_diff_type::operator--): Likewise.
 587         (__max_diff_type::operator<=>): Conditionally define (in place
 588         of the other comparison operators).
 589         * testsuite/std/ranges/iota/max_size_type.cc (test01): Test
 590         these operator overloads.
 591
 592 2021-03-15  Caroline Tice  <cmtice@google.com>
 593
 594         PR libstdc++/99172
 595         * src/Makefile.am (AM_CXXFLAGS_PRE, AM_CXXFLAGS): Add
 596         AM_CXXFLAGS_PRE with the old definition of AM_CXXFLAGS; make
 597         AM_CXXFLAGS to be AM_CXXFLAGS_PRE with '-fvtable-verify=std'
 598         filtered out.
 599         * src/Makefile.in: Regenerate.
 600
 601 2021-03-11  Patrick Palka  <ppalka@redhat.com>
 602
 603         * src/c++17/floating_to_chars.cc: Simplify the file as if
 604         __SIZEOF_INT128__ is always defined.
 605         [!defined __SIZEOF_INT128__]: Include "uint128_t.h".  Define
 606         a base-10 to_chars overload for the uint128_t class type.
 607         * src/c++17/uint128_t.h: New file.
 608         * testsuite/20_util/to_chars/long_double.cc: No longer expect an
 609         execution FAIL on targets that have a large long double type
 610         but lack __int128.
 611
 612 2021-03-11  Patrick Palka  <ppalka@redhat.com>
 613
 614         * src/c++17/ryu/LOCAL_PATCHES: Update.
 615         * src/c++17/ryu/d2s_intrinsics.h: Don't define uint128_t.
 616         * src/c++17/ryu/generic_128.h: Likewise.
 617         * src/c++17/ryu/ryu_generic_128.h (struct floating_decimal_128):
 618         Use uint128_t instead of __uint128_t.
 619         (generic_binary_to_decimal): Likewise.
 620
 621 2021-03-11  Patrick Palka  <ppalka@redhat.com>
 622
 623         * src/c++17/ryu/LOCAL_PATCHES: New file.
 624
 625 2021-03-11  Patrick Palka  <ppalka@redhat.com>
 626
 627         * src/c++17/floating_to_chars.cc (uint128_t): New conditionally
 628         defined alias of unsigned __int128.
 629         (floating_type_traits_binary128::mantissa_t): Use uint128_t
 630         instead of unsigned __int128.
 631         (floating_type_traits<long double>::mantissa_t)
 632         [LONG_DOUBLE_KIND == LDK_IBM128]: Likewise.
 633         (get_ieee_repr): Likewise.  Make casts from uint_t to mantissa_t
 634         and uint32_t explicit.  Simplify the extraction of mantissa,
 635         exponent and sign bit.
 636
 637 2021-03-11  Jonathan Wakely  <jwakely@redhat.com>
 638
 639         * include/std/barrier (barrier::arrival_token): New move-only
 640         class that encapsulates the underlying token value.
 641
 642 2021-03-11  Jonathan Wakely  <jwakely@redhat.com>
 643
 644         * python/libstdcxx/v6/printers.py (find_type): Use tag attribute
 645         instead of unqualified() method.
 646
 647 2021-03-11  Jonathan Wakely  <jwakely@redhat.com>
 648
 649         PR libstdc++/99537
 650         * include/std/stop_token (_Stop_state_t::_M_release_ownership):
 651         Use acq_rel memory ordering.
 652
 653 2021-03-11  Jonathan Wakely  <jwakely@redhat.com>
 654
 655         PR libstdc++/99533
 656         * src/c++17/fs_dir.cc (recursive_directory_iterator): Use new
 657         helper function to check for permission denied errors.
 658         * src/filesystem/dir.cc (recursive_directory_iterator):
 659         Likewise.
 660         * src/filesystem/dir-common.h (is_permission_denied_error): New
 661         helper function.
 662
 663 2021-03-11  Jonathan Wakely  <jwakely@redhat.com>
 664
 665         PR libstdc++/99536
 666         * include/bits/random.h (normal_distribution): Use
 667         default-initializer for _M_saved and _M_saved_available.
 668
 669 2021-03-10  John David Anglin  <danglin@gcc.gnu.org>
 670
 671         * testsuite/29_atomics/atomic/wait_notify/bool.cc: Add options to
 672         link with libatomic.
 673         * testsuite/29_atomics/atomic/wait_notify/generic.cc: Likewise.
 674         * testsuite/29_atomics/atomic/wait_notify/pointers.cc: Likewise.
 675         * testsuite/29_atomics/atomic_flag/wait_notify/1.cc: Likewise.
 676         * testsuite/30_threads/barrier/arrive.cc: Likewise.
 677         * testsuite/30_threads/barrier/arrive_and_drop.cc: Likewise.
 678         * testsuite/30_threads/barrier/arrive_and_wait.cc: Likewise.
 679         * testsuite/30_threads/barrier/completion.cc: Likewise.
 680         * testsuite/30_threads/latch/3.cc: Likewise.
 681         * testsuite/30_threads/semaphore/try_acquire.cc: Likewise.
 682         * testsuite/30_threads/semaphore/try_acquire_for.cc: Likewise.
 683         * testsuite/30_threads/semaphore/try_acquire_until.cc: Likewise.
 684
 685 2021-03-10  Jonathan Wakely  <jwakely@redhat.com>
 686
 687         PR libstdc++/99413
 688         * include/bits/align.h: Include debug/assertions.h.
 689         * include/bits/codecvt.h: Include bits/c++config.h.
 690         * include/bits/enable_special_members.h: Likewise.
 691         * include/bits/erase_if.h: Likewise.
 692         * include/bits/functional_hash.h: Include <type_traits>.
 693         * include/bits/invoke.h: Include bits/move.h.
 694         * include/bits/ostream_insert.h: Include bits/exception_defines.h.
 695         * include/bits/parse_numbers.h: Include <type_traits>.
 696         * include/bits/predefined_ops.h: Include bits/c++config.h.
 697         * include/bits/range_access.h: Include bits/stl_iterator.h.
 698         * include/bits/stl_bvector.h: Do not include bits/stl_vector.h.
 699         * include/bits/stl_iterator.h: Include bits/stl_iterator_base_types.h.
 700         * include/bits/stl_uninitialized.h: Include bits/stl_algobase.h.
 701         * include/bits/uniform_int_dist.h: Include bits/concept_check.h.
 702         * include/bits/unique_lock.h: Include bits/std_mutex.h.
 703         * include/debug/assertions.h: Include bits/c++config.h.
 704
 705 2021-03-10  Jonathan Wakely  <jwakely@redhat.com>
 706
 707         * include/bits/ranges_cmp.h (__eq_builtin_ptr_cmp): Remove.
 708         (ranges::equal_to, ranges::not_equal_to): Do not constrain
 709         with __eq_builtin_ptr_cmp.
 710         (ranges::less, ranges::greater, ranges::less_equal)
 711         (ranges::greater_equal): Do not constrain with
 712         __less_builtin_ptr_cmp.
 713         * libsupc++/compare (compare_three_way): Do not constrain with
 714         __3way_builtin_ptr_cmp.
 715         * testsuite/18_support/comparisons/object/builtin-ptr-three-way.cc: Moved to...
 716         * testsuite/18_support/comparisons/object/lwg3530.cc: ...here.
 717         * testsuite/20_util/function_objects/range.cmp/lwg3530.cc: New test.
 718
 719 2021-03-10  Jonathan Wakely  <jwakely@redhat.com>
 720
 721         * testsuite/std/time/syn_c++20.cc: Enable synopsis checks for
 722         C++20 calendar types.
 723
 724 2021-03-06  Jakub Jelinek  <jakub@redhat.com>
 725
 726         PR libstdc++/99396
 727         * include/std/bit (__rotl, __rotr): Add optimized variants for power of
 728         two _Nd which the compiler can pattern match the rotates.
 729
 730 2021-03-04  Jonathan Wakely  <jwakely@redhat.com>
 731
 732         PR libstdc++/99382
 733         * testsuite/20_util/specialized_algorithms/uninitialized_default_n/sizes.cc:
 734         Make storage larger than required. Verify no write to the last
 735         element.
 736         * testsuite/20_util/specialized_algorithms/uninitialized_value_construct_n/sizes.cc:
 737         Likewise.
 738
 739 2021-03-03  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 740
 741         * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
 742         * config/abi/post/i386-solaris/amd64/baseline_symbols.txt:
 743         Likewise.
 744         * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
 745         * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
 746         Likewise.
 747
 748 2021-03-03  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 749
 750         * include/experimental/bits/simd.h: Replace reserved _X, _B by
 751         _Xp, _Bp.
 752         * include/experimental/bits/simd_builtin.h: Likewise.
 753         * include/experimental/bits/simd_x86.h: Likewise.
 754
 755 2021-02-27  Jonathan Wakely  <jwakely@redhat.com>
 756
 757         PR libstdc++/99301
 758         * include/std/chrono (year_month_day::_M_days_since_epoch()):
 759         Convert chrono::month and chrono::day to unsigned before
 760         converting to uint32_t.
 761
 762 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
 763
 764         * include/std/chrono (year_month_day::_S_from_days): Perform
 765         all calculations with type uint32_t.
 766
 767 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
 768
 769         * doc/xml/manual/abi.xml: Document versioning for GCC 11.
 770         * doc/html/manual/abi.html: Regenerate.
 771
 772 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
 773
 774         PR libstdc++/99270
 775         * testsuite/27_io/headers/cstdio/types_std.cc: Use pointer to
 776         FILE instead of FILE.
 777
 778 2021-02-25  Andreas Schwab  <schwab@suse.de>
 779
 780         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
 781         * config/abi/post/ia64-linux-gnu/baseline_symbols.txt: Update.
 782         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
 783         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
 784
 785 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
 786
 787         PR libstdc++/99265
 788         * include/std/chrono (year_month_day::_S_from_days): Cast long
 789         to int explicitly.
 790
 791 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
 792
 793         * include/std/utility (to_underlying): Define.
 794         * include/std/version (__cpp_lib_to_underlying): Define.
 795         * testsuite/20_util/to_underlying/1.cc: New test.
 796         * testsuite/20_util/to_underlying/version.cc: New test.
 797
 798 2021-02-24  Jonathan Wakely  <jwakely@redhat.com>
 799
 800         PR libstdc++/99261
 801         * src/c++17/floating_to_chars.cc (sprintf_ld): Add extra args
 802         before value to be printed.
 803
 804 2021-02-24  Patrick Palka  <ppalka@redhat.com>
 805
 806         * src/c++17/floating_to_chars.cc (__floating_to_chars_precision):
 807         Relax the condition that guards the printf code path to accept
 808         F128_type as well as long double.
 809
 810 2021-02-24  Cassio Neri  <cassio.neri@gmail.com>
 811
 812         * include/std/chrono (year_month_day_last:day): New
 813         implementation.
 814
 815 2021-02-24  Cassio Neri  <cassio.neri@gmail.com>
 816
 817         * include/std/chrono (year::is_leap): New implementation.
 818         * testsuite/std/time/year/2.cc: New test.
 819
 820 2021-02-24  Cassio Neri  <cassio.neri@gmail.com>
 821
 822         * include/std/chrono (year_month_day::_M_days_since_epoch):
 823         New implementation.
 824         * testsuite/std/time/year_month_day/4.cc: New test.
 825
 826 2021-02-24  Cassio Neri  <cassio.neri@gmail.com>
 827
 828         * include/std/chrono (year_month_day::_S_from_days): New
 829         implementation.
 830         * testsuite/std/time/year_month_day/3.cc: New test.
 831
 832 2021-02-24  Patrick Palka  <ppalka@redhat.com>
 833
 834         PR libstdc++/98384
 835         * testsuite/20_util/to_chars/long_double.cc: Include <optional>.
 836         (test01): Simplify verifying the nearby values by using a
 837         2-iteration loop and a dedicated output buffer to check that the
 838         nearby values are different.  Factor out the printf-based
 839         verification into a local function, and check that the leading
 840         hex digits agree before comparing to the output of printf.  Also
 841         verify the output by round-tripping it through from_chars.
 842
 843 2021-02-24  Jonathan Wakely  <jwakely@redhat.com>
 844
 845         PR libstdc++/98389
 846         * config/abi/pre/gnu.ver (GLIBCXX_3.4.29): Do not match to_chars
 847         symbols for long double arguments mangled as 'g'.
 848         * config/os/gnu-linux/ldbl-extra.ver: Likewise.
 849         * config/os/gnu-linux/ldbl-ieee128-extra.ver: Likewise.
 850         * src/c++17/Makefile.am [GLIBCXX_LDBL_ALT128_COMPAT_TRUE]:
 851         Use -mabi=ibmlongdouble for floating_to_chars.cc.
 852         * src/c++17/Makefile.in: Regenerate.
 853         * src/c++17/floating_to_chars.cc (floating_type_traits_binary128):
 854         New type defining type traits of IEEE binary128 format.
 855         (floating_type_traits<__float128>): Define specialization.
 856         (floating_type_traits<long double>): Define in terms of
 857         floating_type_traits_binary128 when appropriate.
 858         (floating_to_shortest_scientific): Handle __float128.
 859         (sprintf_ld): New function template for printing a long double
 860         or __ieee128 value using sprintf.
 861         (__floating_to_chars_shortest, __floating_to_chars_precision):
 862         Use sprintf_ld.
 863         (to_chars): Define overloads for __float128.
 864
 865 2021-02-24  Jonathan Wakely  <jwakely@redhat.com>
 866
 867         * testsuite/17_intro/names.cc: Undefine 'u' on powerpc*-linux*.
 868
 869 2021-02-23  Martin Sebor  <msebor@redhat.com>
 870
 871         PR c++/99074
 872         * libsupc++/dyncast.cc (__dynamic_cast): Return null when
 873         first argument is null.
 874
 875 2021-02-23  Jakub Jelinek  <jakub@redhat.com>
 876
 877         PR libstdc++/99181
 878         * testsuite/21_strings/char_traits/requirements/char/99181.cc: New
 879         test.
 880
 881 2021-02-23  Jakub Jelinek  <jakub@redhat.com>
 882
 883         PR libstdc++/99181
 884         * include/bits/char_traits.h (char_traits<char>::compare): For
 885         constexpr evaluation don't call
 886         __gnu_cxx::char_traits<char_type>::compare but do the comparison loop
 887         directly.
 888
 889 2021-02-23  Jakub Jelinek  <jakub@redhat.com>
 890
 891         PR libstdc++/97549
 892         * include/pstl/parallel_backend_serial.h: Remove __pstl::__par_backend.
 893
 894 2021-02-23  Patrick Palka  <ppalka@redhat.com>
 895
 896         PR libstdc++/98384
 897         * src/c++17/floating_to_chars.cc (get_ieee_repr): Extract
 898         the high- and low-order parts from an IBM long double value
 899         in an endian-agnostic way.
 900
 901 2021-02-19  Jonathan Wakely  <jwakely@redhat.com>
 902
 903         * include/bits/atomic_wait.h (__thread_relax()): Call
 904         __thread_yield() not __gthread_yield().
 905
 906 2021-02-15  Jonathan Wakely  <jwakely@redhat.com>
 907
 908         * include/bits/atomic_wait.h (__thread_yield()): Check
 909         _GLIBCXX_HAS_GTHREADS before using __gthread_yield.
 910         (__thread_relax()): Use __thread_yield() instead of repeating
 911         the preprocessor checks for __gthread_yield.
 912
 913 2021-02-15  Jonathan Wakely  <jwakely@redhat.com>
 914
 915         * include/std/mutex (once_flag::_M_activate()): Add explicit
 916         return statement for passive case.
 917         (once_flag::_M_finish(bool)): Use reserved name for parameter.
 918
 919 2021-02-14  Jonathan Wakely  <jwakely@redhat.com>
 920
 921         PR libstdc++/99096
 922         * testsuite/util/testsuite_fs.h: Always include <unistd.h>.
 923
 924 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 925
 926         PR libstdc++/88881
 927         * src/c++17/fs_ops.cc (fs::symlink_status): Re-enable workaround.
 928
 929 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 930
 931         * doc/xml/manual/status_cxx2014.xml: Document implementation
 932         specific properties of std::experimental::filesystem::rename.
 933         * doc/xml/manual/status_cxx2017.xml: Document implementation
 934         specific properties of std::filesystem::rename.
 935         * doc/html/*: Regenerate.
 936         * src/c++17/fs_ops.cc (fs::rename): Implement correct behaviour
 937         for directories on Windows.
 938         * src/filesystem/ops-common.h (__gnu_posix::rename): Use
 939         MoveFileExW on Windows.
 940         * testsuite/27_io/filesystem/operations/rename.cc: New test.
 941         * testsuite/experimental/filesystem/operations/rename.cc: New test.
 942
 943 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 944
 945         * testsuite/util/testsuite_fs.h (nonexistent_path): Add
 946         random number to the path.
 947
 948 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 949
 950         * include/experimental/internet (address_v6::to_string): Include
 951         scope ID in string.
 952         * testsuite/experimental/net/internet/address/v6/members.cc:
 953         Test to_string() results.
 954
 955 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 956
 957         * include/experimental/internet (address_v6::any): Avoid using
 958         memcpy in constexpr function.
 959         (address_v6::loopback): Likewise.
 960         (make_address_v6): Fix missing return statements on error paths.
 961         * include/experimental/io_context: Avoid -Wdangling-else
 962         warning.
 963         * testsuite/experimental/net/internet/address/v4/members.cc:
 964         Remove unused variables.
 965         * testsuite/experimental/net/internet/address/v6/members.cc:
 966         New test.
 967
 968 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 969
 970         * include/bits/shared_ptr_base.h (__shared_ptr::_M_get_deleter):
 971         Add unused attribute to parameter.
 972         * src/c++11/shared_ptr.cc (_Sp_make_shared_tag::_S_eq):
 973         Likewise.
 974
 975 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 976
 977         * testsuite/27_io/basic_ostream/emit/1.cc: Expect test to fail
 978         if -fno-rtti is used.
 979         * testsuite/30_threads/async/forced_unwind.cc: Expect test
 980         to abort if -fno-rtti is used.
 981
 982 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 983
 984         * testsuite/util/testsuite_allocator.h (memory_resource):
 985         Remove requirement for RTTI and exceptions to be enabled.
 986
 987 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 988
 989         * testsuite/27_io/basic_istringstream/rdbuf/char/2832.cc: Use
 990         static_cast when RTTI is disabled.
 991         * testsuite/27_io/basic_istringstream/rdbuf/wchar_t/2832.cc:
 992         Likewise.
 993         * testsuite/27_io/basic_ostringstream/rdbuf/char/2832.cc:
 994         Likewise.
 995         * testsuite/27_io/basic_ostringstream/rdbuf/wchar_t/2832.cc:
 996         Likewise.
 997         * testsuite/27_io/basic_stringstream/str/char/2.cc:
 998         Likewise.
 999         * testsuite/27_io/basic_stringstream/str/wchar_t/2.cc:
1000         Likewise.
1001
1002 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
1003
1004         * include/std/ostream (__syncbuf_base::_S_get): Mark parameter
1005         as unused and only use dynamic_cast when RTTI is enabled.
1006
1007 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
1008
1009         PR libstdc++/99077
1010         * src/c++11/cxx11-ios_failure.cc (__ios_failure(const char*, int)):
1011         Change int parameter to error_code, to match std::ios_failure.
1012         (__throw_ios_failure(const char*, int)): Construct error_code
1013         from int parameter.
1014
1015 2021-02-11  Jonathan Wakely  <jwakely@redhat.com>
1016
1017         * libsupc++/eh_ptr.cc (_GLIBCXX_EH_PTR_RELOPS_COMPAT): Define
1018         new macro.
1019         * libsupc++/exception_ptr.h (_GLIBCXX_EH_PTR_USED): Check new
1020         macro instead of _GLIBCXX_EH_PTR_COMPAT.
1021         (operator==): Likewise.
1022
1023 2021-02-11  Jonathan Wakely  <jwakely@redhat.com>
1024
1025         PR libstdc++/99058
1026         * doc/xml/manual/status_cxx2011.xml: Document when support
1027         became stable.
1028         * doc/xml/manual/status_cxx2014.xml: Likewise.
1029         * doc/xml/manual/status_cxx2017.xml: Likewise.
1030         * doc/html/manual/status.html: Regenerate.
1031
1032 2021-02-10  Jonathan Wakely  <jwakely@redhat.com>
1033
1034         PR libstdc++/88881
1035         * src/c++17/fs_ops.cc (fs::status): Re-enable workaround.
1036
1037 2021-02-10  Jonathan Wakely  <jwakely@redhat.com>
1038
1039         * src/c++17/fs_ops.cc (fs::create_hard_link, fs::equivalent)
1040         (fs::remove): Use std::system_category() for error codes from
1041         GetLastError().
1042         * src/filesystem/ops.cc (fs::create_hard_link, fs::remove):
1043         Likewise.
1044
1045 2021-02-10  Jonathan Wakely  <jwakely@redhat.com>
1046
1047         * testsuite/27_io/filesystem/operations/proximate.cc: Fix typo
1048         in __MINGW32__ macro name.
1049         * testsuite/27_io/filesystem/path/compare/lwg2936.cc: Likewise.
1050         * testsuite/27_io/filesystem/path/generation/proximate.cc:
1051         Likewise.
1052         * testsuite/27_io/filesystem/path/generation/relative.cc:
1053         Likewise.
1054         * testsuite/util/testsuite_fs.h: Likewise.
1055
1056 2021-02-09  François Dumont  <fdumont@gcc.gnu.org>
1057
1058         * include/bits/stl_tree.h
1059         (__has_is_transparent, __has_is_transparent_t): Move...
1060         * include/bits/stl_function.h: ...here.
1061         * include/bits/hashtable_policy.h (_Hash_code_base<>::_M_hash_code_tr): New..
1062         (_Hashtable_base<>::_M_equals_tr): New.
1063         * include/bits/hashtable.h (_Hashtable<>::_M_find_tr, _Hashtable<>::_M_count_tr,
1064         _Hashtable<>::_M_equal_range_tr): New member function templates to perform
1065         heterogeneous lookup.
1066         (_Hashtable<>::_M_find_before_node_tr): New.
1067         (_Hashtable<>::_M_find_node_tr): New.
1068         * include/bits/unordered_map.h (unordered_map::find<>, unordered_map::count<>,
1069         unordered_map::contains<>, unordered_map::equal_range<>): New member function
1070         templates to perform heterogeneous lookup.
1071         (unordered_multimap::find<>, unordered_multimap::count<>,
1072         unordered_multimap::contains<>, unordered_multimap::equal_range<>): Likewise.
1073         * include/bits/unordered_set.h  (unordered_set::find<>, unordered_set::count<>,
1074         unordered_set::contains<>, unordered_set::equal_range<>): Likewise.
1075         (unordered_multiset::find<>, unordered_multiset::count<>,
1076         unordered_multiset::contains<>, unordered_multiset::equal_range<>): Likewise.
1077         * include/debug/unordered_map
1078         (unordered_map::find<>, unordered_map::equal_range<>): Likewise.
1079         (unordered_multimap::find<>, unordered_multimap::equal_range<>): Likewise.
1080         * include/debug/unordered_set
1081         (unordered_set::find<>, unordered_set::equal_range<>): Likewise.
1082         (unordered_multiset::find<>, unordered_multiset::equal_range<>): Likewise.
1083         * testsuite/23_containers/unordered_map/operations/1.cc: New test.
1084         * testsuite/23_containers/unordered_multimap/operations/1.cc: New test.
1085         * testsuite/23_containers/unordered_multiset/operations/1.cc: New test.
1086         * testsuite/23_containers/unordered_set/operations/1.cc: New test.
1087
1088 2021-02-09  François Dumont  <fdumont@gcc.gnu.org>
1089
1090         * include/bits/stl_deque.h
1091         (std::operator-(deque::iterator, deque::iterator)): Replace if/then with
1092         a null pointer test.
1093
1094 2021-02-09  Jonathan Wakely  <jwakely@redhat.com>
1095
1096         * testsuite/27_io/filesystem/operations/remove_all.cc: Remove
1097         test directory after making it writable again.
1098         * testsuite/experimental/filesystem/operations/remove_all.cc:
1099         Likewise.
1100
1101 2021-02-09  Jonathan Wakely  <jwakely@redhat.com>
1102
1103         PR libstdc++/99021
1104         * include/std/coroutine (coroutine_handle<P>::from_address): Add
1105         noexcept.
1106
1107 2021-02-09  Vladimir Vishnevsky  <vv.os.swe@gmail.com>
1108
1109         * include/ext/stdio_sync_filebuf.h: Remove unused <unistd.h>.
1110         * src/c++17/fs_ops.cc (fs::permissions): Qualify mode_t.
1111
1112 2021-02-09  Jakub Jelinek  <jakub@redhat.com>
1113
1114         PR middle-end/98465
1115         * include/bits/basic_string.tcc (basic_string::_M_replace): When __s
1116         points to the characters moved by earlier _S_move, compute the source
1117         address using expression based on the __p pointer rather than __s
1118         pointer.
1119
1120 2021-02-03  Jonathan Wakely  <jwakely@redhat.com>
1121
1122         * testsuite/19_diagnostics/error_code/operators/not_equal.cc:
1123         Add comparison with same category and different values.
1124         * testsuite/19_diagnostics/error_code/operators/less.cc:
1125         Likewise. Fix comparison involving different categories.
1126         * testsuite/19_diagnostics/error_code/operators/three_way.cc:
1127         Likewise.
1128         * testsuite/19_diagnostics/error_condition/operators/less.cc:
1129         Add comment.
1130         * testsuite/19_diagnostics/error_condition/operators/three_way.cc:
1131         Likewise.
1132
1133 2021-02-03  yaozhongxiao  <yaozhongxiao@linux.alibaba.com>
1134
1135         * include/experimental/bits/simd_neon.h: Replace repeated vpadd
1136         calls with a single vaddv for aarch64.
1137
1138 2021-02-03  Matthias Kretz  <kretz@kde.org>
1139
1140         * testsuite/Makefile.am: Warn about the workaround. Add
1141         -fno-tree-vrp to CXXFLAGS passed to the check_simd script.
1142         Improve initial user feedback from make check-simd.
1143         * testsuite/Makefile.in: Regenerated.
1144
1145 2021-02-03  Matthias Kretz  <kretz@kde.org>
1146
1147         * include/experimental/bits/simd.h: Add __detail::_Minimum and
1148         __detail::_Maximum to use them as _BinaryOperation to _S_reduce.
1149         Add hmin and hmax overloads for simd and const_where_expression.
1150         * include/experimental/bits/simd_scalar.h
1151         (_SimdImplScalar::_S_reduce): Make unused _BinaryOperation
1152         parameter const-ref to allow calling _S_reduce with an rvalue.
1153         * testsuite/experimental/simd/tests/reductions.cc: Add tests for
1154         hmin and hmax. Since the compiler statically determined that all
1155         tests pass, repeat the test after a call to make_value_unknown.
1156
1157 2021-02-03  Matthias Kretz  <kretz@kde.org>
1158
1159         * testsuite/experimental/simd/tests/bits/verify.h (verify): Add
1160         instruction pointer data member. Ensure that the `if (m_failed)`
1161         branch is always inlined into the calling code. The body of the
1162         conditional can still be a function call. Move the get_ip call
1163         into the verify ctor to simplify the ctor calls.
1164         (COMPARE): Don't mention the use of all_of for reduction of a
1165         simd_mask. It only distracts from the real issue.
1166
1167 2021-02-03  Matthias Kretz  <kretz@kde.org>
1168
1169         * testsuite/experimental/simd/driver.sh: Abstract reading test
1170         options into read_src_option function. Read skip, only,
1171         expensive, and xfail via read_src_option. Add timeout and
1172         timeout-factor options and adjust timeout variable accordingly.
1173         * testsuite/experimental/simd/tests/loadstore.cc: Set
1174         timeout-factor 2.
1175
1176 2021-02-03  Matthias Kretz  <kretz@kde.org>
1177
1178         * testsuite/experimental/simd/driver.sh: When handling the pipe
1179         to log (and on verbose to stdout) count the lines. If it exceeds
1180         1000 log the issue and exit 125, which is then handled as a
1181         failure.
1182
1183 2021-02-03  Matthias Kretz  <kretz@kde.org>
1184
1185         * testsuite/experimental/simd/tests/hypot3_fma.cc: Add skip:
1186         markup for long double on powerpc64*.
1187
1188 2021-02-03  Matthias Kretz  <kretz@kde.org>
1189
1190         * include/experimental/bits/simd.h: Add __have_power10vec
1191         conditional on _ARCH_PWR10.
1192         * include/experimental/bits/simd_builtin.h: Forward declare
1193         _MaskImplPpc and use it as _MaskImpl when __ALTIVEC__ is
1194         defined.
1195         (_MaskImplBuiltin::_S_some_of): Call _S_popcount from the
1196         _SuperImpl for optimizations and correctness.
1197         * include/experimental/bits/simd_ppc.h: Add _MaskImplPpc.
1198         (_MaskImplPpc::_S_popcount): Implement via vec_cntm for POWER10.
1199         Otherwise, for >=int use -vec_sums divided by a sizeof factor.
1200         For <int use -vec_sums(vec_sum4s(...)) to sum all mask entries.
1201
1202 2021-02-03  Matthias Kretz  <kretz@kde.org>
1203
1204         * testsuite/experimental/simd/driver.sh: Remove executable on
1205         SIGINT. Process compiler and test executable output: In verbose
1206         mode print messages immediately, limited to 1000 lines and
1207         breaking long lines to below $COLUMNS (or 1024 if not set).
1208         Communicating the exit status of the compiler / test with the
1209         necessary pipe is done via a message through stdout/-in.
1210
1211 2021-02-03  Matthias Kretz  <kretz@kde.org>
1212
1213         * testsuite/Makefile.am: Ensure .simd.summary is empty before
1214         collecting a new summary.
1215         * testsuite/Makefile.in: Regenerate.
1216
1217 2021-02-03  Matthias Kretz  <kretz@kde.org>
1218
1219         * testsuite/experimental/simd/generate_makefile.sh: Use
1220         different variables internally than documented for user
1221         overrides. This makes internal append/prepend work as intended.
1222
1223 2021-02-03  Matthias Kretz  <kretz@kde.org>
1224
1225         * testsuite/experimental/simd/driver.sh (verify_test): Print
1226         test output on run xfail. Do not repeat lines from the log that
1227         were already printed on stdout.
1228         (test_selector): Make the compiler flags pattern usable as a
1229         substring selector.
1230         (toplevel): Trap on SIGINT and remove the log and sum files.
1231         Call timout with --foreground to quickly terminate on SIGINT.
1232         * testsuite/experimental/simd/generate_makefile.sh: Simplify run
1233         targets via target patterns. Default DRIVEROPTS to -v for run
1234         targets. Remove log and sum files after completion of the run
1235         target (so that it's always recompiled).
1236         Place help text into text file for reasonable 'make help'
1237         performance.
1238
1239 2021-02-03  Matthias Kretz  <kretz@kde.org>
1240
1241         * include/experimental/bits/simd.h: Remove unnecessary static
1242         assertion. Allow sizeof(8) integer __intrinsic_type to enable
1243         the necessary mask type.
1244
1245 2021-02-03  Matthias Kretz  <kretz@kde.org>
1246
1247         * include/experimental/bits/simd.h: Let __intrinsic_type<long
1248         double, N> be valid if sizeof(long double) == sizeof(double) and
1249         use a __vector double as member type.
1250
1251 2021-02-03  Matthias Kretz  <kretz@kde.org>
1252
1253         * include/experimental/bits/simd.h (__is_intrinsic_type): New
1254         internal type trait. Alias for __is_vector_type on x86.
1255         (_VectorTraitsImpl): Enable for __intrinsic_type in addition for
1256         __vector_type.
1257         (__intrin_bitcast): Allow casting to & from vector & intrinsic
1258         types.
1259         (__intrinsic_type): Explicitly specialize for NEON intrinsic
1260         vector types.
1261
1262 2021-02-03  Matthias Kretz  <kretz@kde.org>
1263
1264         * testsuite/experimental/simd/driver.sh: Implement skip, only,
1265         expensive, and xfail markers. They can select on type, ABI tag
1266         subset number, target-triplet, and compiler flags.
1267         * testsuite/experimental/simd/generate_makefile.sh: The summary
1268         now includes lines for unexpected passes and expected failures.
1269         If the skip or only markers are only conditional on the type, do
1270         not generate rules for those types.
1271         * testsuite/experimental/simd/tests/abs.cc: Mark test expensive
1272         for ABI tag subsets 1-9.
1273         * testsuite/experimental/simd/tests/algorithms.cc: Ditto.
1274         * testsuite/experimental/simd/tests/broadcast.cc: Ditto.
1275         * testsuite/experimental/simd/tests/casts.cc: Ditto.
1276         * testsuite/experimental/simd/tests/generator.cc: Ditto.
1277         * testsuite/experimental/simd/tests/integer_operators.cc: Ditto.
1278         * testsuite/experimental/simd/tests/loadstore.cc: Ditto.
1279         * testsuite/experimental/simd/tests/mask_broadcast.cc: Ditto.
1280         * testsuite/experimental/simd/tests/mask_conversions.cc: Ditto.
1281         * testsuite/experimental/simd/tests/mask_implicit_cvt.cc: Ditto.
1282         * testsuite/experimental/simd/tests/mask_loadstore.cc: Ditto.
1283         * testsuite/experimental/simd/tests/mask_operator_cvt.cc: Ditto.
1284         * testsuite/experimental/simd/tests/mask_operators.cc: Ditto.
1285         * testsuite/experimental/simd/tests/mask_reductions.cc: Ditto.
1286         * testsuite/experimental/simd/tests/operator_cvt.cc: Ditto.
1287         * testsuite/experimental/simd/tests/operators.cc: Ditto.
1288         * testsuite/experimental/simd/tests/reductions.cc: Ditto.
1289         * testsuite/experimental/simd/tests/simd.cc: Ditto.
1290         * testsuite/experimental/simd/tests/split_concat.cc: Ditto.
1291         * testsuite/experimental/simd/tests/splits.cc: Ditto.
1292         * testsuite/experimental/simd/tests/where.cc: Ditto.
1293         * testsuite/experimental/simd/tests/fpclassify.cc: Ditto. In
1294         addition replace "test only floattypes" marker by unconditional
1295         "float|double|ldouble" only marker.
1296         * testsuite/experimental/simd/tests/frexp.cc: Ditto.
1297         * testsuite/experimental/simd/tests/hypot3_fma.cc: Ditto.
1298         * testsuite/experimental/simd/tests/ldexp_scalbn_scalbln_modf.cc:
1299         Ditto.
1300         * testsuite/experimental/simd/tests/logarithm.cc: Ditto.
1301         * testsuite/experimental/simd/tests/math_1arg.cc: Ditto.
1302         * testsuite/experimental/simd/tests/math_2arg.cc: Ditto.
1303         * testsuite/experimental/simd/tests/remqo.cc: Ditto.
1304         * testsuite/experimental/simd/tests/trigonometric.cc: Ditto.
1305         * testsuite/experimental/simd/tests/trunc_ceil_floor.cc: Ditto.
1306         * testsuite/experimental/simd/tests/sincos.cc: Ditto. In
1307         addition, xfail on run because the reference data is missing.
1308
1309 2021-02-02  Jonathan Wakely  <jwakely@redhat.com>
1310
1311         * doc/xml/manual/status_cxx2011.xml: Remove stray table cell.
1312         * doc/xml/manual/status_cxx2014.xml: Likewise.
1313         * doc/xml/manual/status_cxx2017.xml: Likewise.
1314         * doc/html/manual/status.html: Regenerate.
1315
1316 2021-02-01  François Dumont  <fdumont@gcc.gnu.org>
1317
1318         PR libstdc++/70303
1319         * include/bits/stl_deque.h (std::deque<>::operator-(iterator, iterator)):
1320         Return 0 if both iterators are value-initialized.
1321         * testsuite/23_containers/deque/70303.cc: New test.
1322         * testsuite/23_containers/vector/70303.cc: New test.
1323
1324 2021-02-01  Jonathan Wakely  <jwakely@redhat.com>
1325
1326         * doc/xml/manual/status_cxx2011.xml: Update std::call_once
1327         status.
1328         * doc/xml/manual/status_cxx2014.xml: Likewise.
1329         * doc/xml/manual/status_cxx2017.xml: Likewise. Update
1330         std::from_chars and std::to_chars status. Fix formatting.
1331         * doc/html/manual/status.html: Regenerate.
1332
1333 2021-01-28  Jonathan Wakely  <jwakely@redhat.com>
1334
1335         * include/experimental/bits/numeric_traits.h: Update copyright
1336         dates.
1337         * include/experimental/bits/simd.h: Likewise.
1338         * include/experimental/bits/simd_builtin.h: Likewise.
1339         * include/experimental/bits/simd_converter.h: Likewise.
1340         * include/experimental/bits/simd_detail.h: Likewise.
1341         * include/experimental/bits/simd_fixed_size.h: Likewise.
1342         * include/experimental/bits/simd_math.h: Likewise.
1343         * include/experimental/bits/simd_neon.h: Likewise.
1344         * include/experimental/bits/simd_ppc.h: Likewise.
1345         * include/experimental/bits/simd_scalar.h: Likewise.
1346         * include/experimental/bits/simd_x86.h: Likewise.
1347         * include/experimental/bits/simd_x86_conversions.h: Likewise.
1348         * include/experimental/simd: Likewise.
1349         * testsuite/experimental/simd/*: Likewise.
1350
1351 2021-01-27  Jonathan Wakely  <jwakely@redhat.com>
1352
1353         * doc/xml/manual/status_cxx2017.xml: Replace invalid entity.
1354         * doc/html/*: Regenerate.
1355
1356 2021-01-27  Jonathan Wakely  <jwakely@redhat.com>
1357
1358         * testsuite/experimental/simd/generate_makefile.sh: Use printf
1359         instead of echo when printing escape characters.
1360
1361 2021-01-27  Matthias Kretz  <kretz@kde.org>
1362
1363         * scripts/check_simd: New file. This script is called from the
1364         the check-simd target. It determines a set of compiler flags and
1365         simulator setups for calling generate_makefile.sh and passes the
1366         information back to the check-simd target, which recurses to the
1367         generated Makefiles.
1368         * scripts/create_testsuite_files: Remove files below simd/tests/
1369         from testsuite_files and place them in testsuite_files_simd.
1370         * testsuite/Makefile.am: Add testsuite_files_simd. Add
1371         check-simd target.
1372         * testsuite/Makefile.in: Regenerate.
1373         * testsuite/experimental/simd/driver.sh: New file. This script
1374         compiles and runs a given simd test, logging its output and
1375         status. It uses the timeout command to implement compile and
1376         test timeouts.
1377         * testsuite/experimental/simd/generate_makefile.sh: New file.
1378         This script generates a Makefile which uses driver.sh to compile
1379         and run the tests and collect the logs into a single log file.
1380         * testsuite/experimental/simd/tests/abs.cc: New file. Tests
1381         abs(simd).
1382         * testsuite/experimental/simd/tests/algorithms.cc: New file.
1383         Tests min/max(simd, simd).
1384         * testsuite/experimental/simd/tests/bits/conversions.h: New
1385         file. Contains functions to support tests involving conversions.
1386         * testsuite/experimental/simd/tests/bits/make_vec.h: New file.
1387         Support functions make_mask and make_vec.
1388         * testsuite/experimental/simd/tests/bits/mathreference.h: New
1389         file. Support functions to supply precomputed math function
1390         reference data.
1391         * testsuite/experimental/simd/tests/bits/metahelpers.h: New
1392         file. Support code for SFINAE testing.
1393         * testsuite/experimental/simd/tests/bits/simd_view.h: New file.
1394         * testsuite/experimental/simd/tests/bits/test_values.h: New
1395         file. Test functions to easily drive a test with simd objects
1396         initialized from a given list of values and a range of random
1397         values.
1398         * testsuite/experimental/simd/tests/bits/ulp.h: New file.
1399         Support code to determine the ULP distance of simd objects.
1400         * testsuite/experimental/simd/tests/bits/verify.h: New file.
1401         Test framework for COMPARE'ing simd objects and instantiating
1402         the test templates with value_type and ABI tag.
1403         * testsuite/experimental/simd/tests/broadcast.cc: New file. Test
1404         simd broadcasts.
1405         * testsuite/experimental/simd/tests/casts.cc: New file. Test
1406         simd casts.
1407         * testsuite/experimental/simd/tests/fpclassify.cc: New file.
1408         Test floating-point classification functions.
1409         * testsuite/experimental/simd/tests/frexp.cc: New file. Test
1410         frexp(simd).
1411         * testsuite/experimental/simd/tests/generator.cc: New file. Test
1412         simd generator constructor.
1413         * testsuite/experimental/simd/tests/hypot3_fma.cc: New file.
1414         Test 3-arg hypot(simd,simd,simd) and fma(simd,simd,sim).
1415         * testsuite/experimental/simd/tests/integer_operators.cc: New
1416         file. Test integer operators.
1417         * testsuite/experimental/simd/tests/ldexp_scalbn_scalbln_modf.cc:
1418         New file. Test ldexp(simd), scalbn(simd), scalbln(simd), and
1419         modf(simd).
1420         * testsuite/experimental/simd/tests/loadstore.cc: New file. Test
1421         (converting) simd loads and stores.
1422         * testsuite/experimental/simd/tests/logarithm.cc: New file. Test
1423         log*(simd).
1424         * testsuite/experimental/simd/tests/mask_broadcast.cc: New file.
1425         Test simd_mask broadcasts.
1426         * testsuite/experimental/simd/tests/mask_conversions.cc: New
1427         file. Test simd_mask conversions.
1428         * testsuite/experimental/simd/tests/mask_implicit_cvt.cc: New
1429         file. Test simd_mask implicit conversions.
1430         * testsuite/experimental/simd/tests/mask_loadstore.cc: New file.
1431         Test simd_mask loads and stores.
1432         * testsuite/experimental/simd/tests/mask_operator_cvt.cc: New
1433         file. Test simd_mask operators convert as specified.
1434         * testsuite/experimental/simd/tests/mask_operators.cc: New file.
1435         Test simd_mask compares, subscripts, and negation.
1436         * testsuite/experimental/simd/tests/mask_reductions.cc: New
1437         file. Test simd_mask reductions.
1438         * testsuite/experimental/simd/tests/math_1arg.cc: New file. Test
1439         1-arg math functions on simd.
1440         * testsuite/experimental/simd/tests/math_2arg.cc: New file. Test
1441         2-arg math functions on simd.
1442         * testsuite/experimental/simd/tests/operator_cvt.cc: New file.
1443         Test implicit conversions on simd binary operators behave as
1444         specified.
1445         * testsuite/experimental/simd/tests/operators.cc: New file. Test
1446         simd compares, subscripts, not, unary minus, plus, minus,
1447         multiplies, divides, increment, and decrement.
1448         * testsuite/experimental/simd/tests/reductions.cc: New file.
1449         Test reduce(simd).
1450         * testsuite/experimental/simd/tests/remqo.cc: New file. Test
1451         remqo(simd).
1452         * testsuite/experimental/simd/tests/simd.cc: New file. Basic
1453         sanity checks of simd types.
1454         * testsuite/experimental/simd/tests/sincos.cc: New file. Test
1455         sin(simd) and cos(simd).
1456         * testsuite/experimental/simd/tests/split_concat.cc: New file.
1457         Test split(simd) and concat(simd, simd).
1458         * testsuite/experimental/simd/tests/splits.cc: New file. Test
1459         split(simd_mask).
1460         * testsuite/experimental/simd/tests/trigonometric.cc: New file.
1461         Test remaining trigonometric functions on simd.
1462         * testsuite/experimental/simd/tests/trunc_ceil_floor.cc: New
1463         file. Test trunc(simd), ceil(simd), and floor(simd).
1464         * testsuite/experimental/simd/tests/where.cc: New file. Test
1465         masked operations using where.
1466
1467 2021-01-27  Matthias Kretz  <kretz@kde.org>
1468
1469         * doc/xml/manual/status_cxx2017.xml: Add implementation status
1470         of the Parallelism TS 2. Document implementation-defined types
1471         and behavior.
1472         * include/Makefile.am: Add new headers.
1473         * include/Makefile.in: Regenerate.
1474         * include/experimental/simd: New file. New header for
1475         Parallelism TS 2.
1476         * include/experimental/bits/numeric_traits.h: New file.
1477         Implementation of P1841R1 using internal naming. Addition of
1478         missing IEC559 functionality query.
1479         * include/experimental/bits/simd.h: New file. Definition of the
1480         public simd interfaces and general implementation helpers.
1481         * include/experimental/bits/simd_builtin.h: New file.
1482         Implementation of the _VecBuiltin simd_abi.
1483         * include/experimental/bits/simd_converter.h: New file. Generic
1484         simd conversions.
1485         * include/experimental/bits/simd_detail.h: New file. Internal
1486         macros for the simd implementation.
1487         * include/experimental/bits/simd_fixed_size.h: New file. Simd
1488         fixed_size ABI specific implementations.
1489         * include/experimental/bits/simd_math.h: New file. Math
1490         overloads for simd.
1491         * include/experimental/bits/simd_neon.h: New file. Simd NEON
1492         specific implementations.
1493         * include/experimental/bits/simd_ppc.h: New file. Implement bit
1494         shifts to avoid invalid results for integral types smaller than
1495         int.
1496         * include/experimental/bits/simd_scalar.h: New file. Simd scalar
1497         ABI specific implementations.
1498         * include/experimental/bits/simd_x86.h: New file. Simd x86
1499         specific implementations.
1500         * include/experimental/bits/simd_x86_conversions.h: New file.
1501         x86 specific conversion optimizations. The conversion patterns
1502         work around missing conversion patterns in the compiler and
1503         should be removed as soon as PR85048 is resolved.
1504         * testsuite/experimental/simd/standard_abi_usable.cc: New file.
1505         Test that all (not all fixed_size<N>, though) standard simd and
1506         simd_mask types are usable.
1507         * testsuite/experimental/simd/standard_abi_usable_2.cc: New
1508         file. As above but with -ffast-math.
1509         * testsuite/libstdc++-dg/conformance.exp: Don't build simd tests
1510         from the standard test loop. Instead use
1511         check_vect_support_and_set_flags to build simd tests with the
1512         relevant machine flags.
1513
1514 2021-01-27  Jonathan Wakely  <jwakely@redhat.com>
1515
1516         PR libstdc++/66414
1517         * include/bits/string_view.tcc
1518         (basic_string_view::find(const CharT*, size_type, size_type)):
1519         Optimize.
1520
1521 2021-01-27  Paul Fee  <paul.f.fee@gmail.com>
1522
1523         * include/bits/basic_string.h (basic_string::contains): New
1524         member functions.
1525         * include/std/string_view (basic_string_view::contains):
1526         Likewise.
1527         * include/std/version (__cpp_lib_string_contains): Define.
1528         * testsuite/21_strings/basic_string/operations/starts_with/char/1.cc:
1529         Remove trailing whitespace.
1530         * testsuite/21_strings/basic_string/operations/starts_with/wchar_t/1.cc:
1531         Likewise.
1532         * testsuite/21_strings/basic_string/operations/contains/char/1.cc: New test.
1533         * testsuite/21_strings/basic_string/operations/contains/wchar_t/1.cc: New test.
1534         * testsuite/21_strings/basic_string_view/operations/contains/char/1.cc: New test.
1535         * testsuite/21_strings/basic_string_view/operations/contains/char/2.cc: New test.
1536         * testsuite/21_strings/basic_string_view/operations/contains/wchar_t/1.cc: New test.
1537
1538 2021-01-21  Jonathan Wakely  <jwakely@redhat.com>
1539
1540         * src/c++17/Makefile.in: Regenerate.
1541
1542 2021-01-20  David Edelsohn  <dje.gcc@gmail.com>
1543
1544         * config/os/aix/ctype_inline.h (bool ctype<char>:: is): Cast
1545         _OBJ_DATA subscript to unsigned char. Add _THREAD_SAFE access to
1546         __lc_type.
1547         (const char* ctype<char>:: is): Same.
1548
1549 2021-01-18  Jonathan Wakely  <jwakely@redhat.com>
1550
1551         PR libstdc++/98725
1552         * testsuite/20_util/unique_ptr/io/lwg2948.cc:  Do not try to
1553         write to a wide character stream if wide character support is
1554         disabled in the library.
1555
1556 2021-01-18  Jonathan Wakely  <jwakely@redhat.com>
1557
1558         * testsuite/27_io/basic_stringstream/cons/char/1.cc: Use
1559         stringbuf not wstringbuf.
1560
1561 2021-01-18  Jakub Jelinek  <jakub@redhat.com>
1562
1563         PR debug/98708
1564         * src/c++11/Makefile.am (cxx11-ios_failure-lt.s, cxx11-ios_failure.s):
1565         Compile with -gno-as-loc-support.
1566         * src/c++11/Makefile.in: Regenerated.
1567
1568 2021-01-16  H.J. Lu  <hjl.tools@gmail.com>
1569
1570         * testsuite/29_atomics/atomic_flag/test_and_set/explicit-hle.cc:
1571         Add -fcf-protection=none to -march=i486.
1572
1573 2021-01-14  François Dumont  <fdumont@gcc.gnu.org>
1574
1575         * testsuite/23_containers/deque/debug/98466.cc: Make it pre-C++11
1576         compliant.
1577
1578 2021-01-14  Alexandre Oliva  <oliva@adacore.com>
1579
1580         * testsuite/30_threads/future/members/poll.cc: Calibrate
1581         iteration count.
1582
1583 2021-01-14  François Dumont  <fdumont@gcc.gnu.org>
1584
1585         PR libstdc++/98466
1586         * include/bits/hashtable_policy.h (_Node_iterator_base()): Set _M_cur to nullptr.
1587         (_Node_iterator()): Make default.
1588         (_Node_const_iterator()): Make default.
1589         * include/debug/macros.h (__glibcxx_check_erae_range_after): Add _M_singular
1590         iterator checks.
1591         * include/debug/safe_iterator.h
1592         (_GLIBCXX_DEBUG_VERIFY_OPERANDS): Accept if both iterator are value initialized.
1593         * include/debug/safe_local_iterator.h (_GLIBCXX_DEBUG_VERIFY_OPERANDS):
1594         Likewise.
1595         * include/debug/safe_iterator.tcc (_Safe_iterator<>::_M_valid_range): Add
1596         _M_singular checks on input iterators.
1597         * src/c++11/debug.cc (_Safe_iterator_base::_M_can_compare): Remove _M_singular
1598         checks.
1599         * testsuite/23_containers/deque/debug/98466.cc: New test.
1600         * testsuite/23_containers/unordered_map/debug/98466.cc: New test.
1601
1602 2021-01-14  Jonathan Wakely  <jwakely@redhat.com>
1603
1604         PR libstdc++/98471
1605         * include/bits/fs_path.h (__throw_conversion_error): New
1606         function to throw or abort on character conversion errors.
1607         (__wstr_from_utf8): Move definition after filesystem_error has
1608         been defined. Use __throw_conversion_error.
1609         (path::_S_convert<_EcharT>): Use __throw_conversion_error.
1610         (path::_S_str_convert<_CharT, _Traits, _Allocator>): Likewise.
1611         (path::u8string): Likewise.
1612
1613 2021-01-14  Jonathan Wakely  <jwakely@redhat.com>
1614
1615         * include/std/barrier: Update copyright years. Fix whitespace.
1616         * include/std/version: Fix whitespace.
1617         * testsuite/30_threads/barrier/1.cc: Update copyright years.
1618         * testsuite/30_threads/barrier/2.cc: Likewise.
1619         * testsuite/30_threads/barrier/arrive.cc: Likewise.
1620         * testsuite/30_threads/barrier/arrive_and_drop.cc: Likewise.
1621         * testsuite/30_threads/barrier/arrive_and_wait.cc: Likewise.
1622         * testsuite/30_threads/barrier/completion.cc: Likewise.
1623
1624 2021-01-13  Jonathan Wakely  <jwakely@redhat.com>
1625
1626         * doc/doxygen/user.cfg.in (INPUT): Remove include/debug/array.
1627
1628 2021-01-10  David Edelsohn  <dje.gcc@gmail.com>
1629
1630         PR libstdc++/98613
1631         * testsuite/ext/vstring/cons/moveable.cc: Suppress false positive
1632         warning.
1633         * testsuite/ext/vstring/modifiers/assign/move_assign.cc: Same.
1634
1635 2021-01-08  Olivier Hainque  <hainque@adacore.com>
1636
1637         * testsuite/20_util/bind/ref_neg.cc: Tweak the
1638         dg-prune-output regex for out-of-build-tree contexts.
1639
1640 2021-01-07  Thomas Rodgers  <trodgers@redhat.com>
1641
1642         * doc/doxygen/user.cfg.in: Add new header.
1643         * include/Makefile.am (std_headers): likewise.
1644         * include/Makefile.in: Regenerate.
1645         * include/precompiled/stdc++.h: Add new header.
1646         * include/std/barrier: New file.
1647         * include/std/version: Add __cpp_lib_barrier feature test macro.
1648         * testsuite/30_threads/barrier/1.cc: New test.
1649         * testsuite/30_threads/barrier/2.cc: Likewise.
1650         * testsuite/30_threads/barrier/arrive_and_drop.cc: Likewise.
1651         * testsuite/30_threads/barrier/arrive_and_wait.cc: Likewise.
1652         * testsuite/30_threads/barrier/arrive.cc: Likewise.
1653         * testsuite/30_threads/barrier/completion.cc: Likewise.
1654
1655 2021-01-07  Patrick Palka  <ppalka@redhat.com>
1656
1657         PR libstdc++/98384
1658         * testsuite/20_util/to_chars/long_double.cc: Use nexttowardl
1659         instead of the non-standard nextupl and nextdownl.
1660
1661 2021-01-05  Samuel Thibault  <samuel.thibault@ens-lyon.org>
1662
1663         * configure: Re-generate.
1664
1665 2021-01-05  Ed Smith-Rowland  <3dw4rd@verizon.net>
1666
1667         * include/precompiled/stdc++.h: Add <source_location> to C++20 section.
1668
1669 2021-01-01  Jakub Jelinek  <jakub@redhat.com>
1670
1671         * ChangeLog-2020: Rotate ChangeLog.  New file.
1672
1673 \f
1674 Copyright (C) 2021 Free Software Foundation, Inc.
1675
1676 Copying and distribution of this file, with or without modification,
1677 are permitted in any medium without royalty provided the copyright
1678 notice and this notice are preserved.