libstdc++-v3/ChangeLog

   1 2021-05-24  François Dumont  <fdumont@gcc.gnu.org>
   2
   3         PR libstdc++/96088
   4         * include/bits/hashtable_policy.h (_Select2nd): New.
   5         (_NodeBuilder<>): New.
   6         (_ReuseOrAllocNode<>::operator()): Use variadic template args.
   7         (_AllocNode<>::operator()): Likewise.
   8         * include/bits/hashtable.h
   9         (_Hashtable<>::__node_builder_t): New.
  10         (_Hashtable<>::_M_insert_unique<>(_Kt&&, _Arg&&, const _NodeGenerator&)):
  11          New.
  12         (_Hashtable<>::_S_forward_key): New.
  13         (_Hashtable<>::_M_insert): Use latter.
  14         (_Hashtable<>::_M_insert(const_iterator, _Arg&&, const _NodeGenerator&, false_type)):
  15         Instantiate node first, compute hash code second.
  16         * testsuite/23_containers/unordered_map/96088.cc: New test.
  17         * testsuite/23_containers/unordered_multimap/96088.cc: New test.
  18         * testsuite/23_containers/unordered_multiset/96088.cc: New test.
  19         * testsuite/23_containers/unordered_set/96088.cc: New test.
  20         * testsuite/util/replacement_memory_operators.h
  21         (counter::_M_increment): New.
  22         (counter::_M_decrement): New.
  23         (counter::reset()): New.
  24
  25 2021-05-24  Patrick Palka  <ppalka@redhat.com>
  26
  27         PR libstdc++/100479
  28         * include/std/ranges (__detail::__non_propagating_cache): Move
  29         definition up to before that of _CachedPosition.  Make base
  30         class _Optional_base protected instead of private.  Add const
  31         overload for operator*.
  32         (__detail::_CachedPosition): Rewrite the partial specialization
  33         for forward ranges as a derived class of __non_propagating_cache.
  34         Remove the size constraint on the partial specialization for
  35         random access ranges.  Add copy/move/copy-assignment/move-assignment
  36         members to the offset partial specialization for random
  37         access ranges that propagate the cached value but additionally
  38         invalidate it in the source object on move.
  39         * testsuite/std/ranges/adaptors/100479.cc: New test.
  40
  41 2021-05-24  Jonathan Wakely  <jwakely@redhat.com>
  42
  43         * testsuite/25_algorithms/inplace_merge/constrained.cc: Qualify
  44         call to ranges::next.
  45         * testsuite/25_algorithms/is_sorted/constrained.cc: Likewise.
  46         * testsuite/25_algorithms/is_sorted_until/constrained.cc:
  47         Likewise.
  48         * testsuite/25_algorithms/swap_ranges/1.cc: Qualify call to
  49         swap_ranges.
  50
  51 2021-05-21  Patrick Palka  <ppalka@redhat.com>
  52
  53         PR libstdc++/100606
  54         * include/std/ranges (drop_while_view::begin): Assert the
  55         precondition added by LWG 3490.
  56
  57 2021-05-21  Patrick Palka  <ppalka@redhat.com>
  58
  59         PR libstdc++/100690
  60         * include/std/ranges (iota_view::_Sentinel::_M_distance_from):
  61         Split out this member function from ...
  62         (iota_view::_Sentinel::operator-): ... here, for sake of access
  63         control.
  64         * testsuite/std/ranges/iota/iota_view.cc (test05): New test.
  65
  66 2021-05-20  Jonathan Wakely  <jwakely@redhat.com>
  67
  68         * include/bits/random.tcc (__representable_as_double)
  69         (__p1_representable_as_double): Add "" to static asserts.
  70
  71 2021-05-20  Jonathan Wakely  <jwakely@redhat.com>
  72
  73         PR libstdc++/100676
  74         * include/bits/c++config (__glibcxx_assert_1): Rename to ...
  75         (__glibcxx_constexpr_assert): ... this.
  76         (__glibcxx_assert_impl): Use __glibcxx_constexpr_assert.
  77         (__glibcxx_assert): Define as either __glibcxx_constexpr_assert
  78         or __glibcxx_assert_impl.
  79         (__glibcxx_assert_2): Remove
  80         * include/debug/macros.h (_GLIBCXX_DEBUG_VERIFY_AT_F): Use
  81         __glibcxx_constexpr_assert instead of __glibcxx_assert_1.
  82         * testsuite/21_strings/basic_string_view/element_access/char/back_constexpr_neg.cc:
  83         Adjust expected error.
  84         * testsuite/21_strings/basic_string_view/element_access/char/constexpr_neg.cc:
  85         Likewise.
  86         * testsuite/21_strings/basic_string_view/element_access/char/front_constexpr_neg.cc:
  87         Likewise.
  88         Likewise.
  89         * testsuite/21_strings/basic_string_view/element_access/wchar_t/back_constexpr_neg.cc:
  90         Likewise.
  91         * testsuite/21_strings/basic_string_view/element_access/wchar_t/constexpr_neg.cc:
  92         Likewise.
  93         * testsuite/21_strings/basic_string_view/element_access/wchar_t/front_constexpr_neg.cc:
  94         Likewise.
  95         * testsuite/23_containers/span/back_neg.cc: Likewise.
  96         * testsuite/23_containers/span/front_neg.cc: Likewise.
  97         * testsuite/23_containers/span/index_op_neg.cc: Likewise.
  98
  99 2021-05-20  Patrick Palka  <ppalka@redhat.com>
 100
 101         PR libstdc++/100639
 102         * include/bits/stl_iterator.h (reverse_iterator::difference_type):
 103         In C++20 mode, define in terms of iter_difference_t as per P0896R4.
 104         (reverse_iterator::reference): Likewise, but with iter_reference_t.
 105         (reverse_iterator::value_type): Likewise, but with iter_value_t.
 106         * testsuite/std/ranges/adaptors/reverse.cc (test08): New test.
 107         * testsuite/24_iterators/reverse_iterator/100639.cc: New test.
 108
 109 2021-05-20  Joern Rennecke  <joern.rennecke@riscy-ip.com>
 110
 111         PR libstdc++/100361
 112         * include/std/charconv (to_chars): Hide the overloads for
 113         floating-point types for 16 bit targets.
 114         * src/c++17/floating_to_chars.cc: Don't compile for 16 bit targets.
 115         * testsuite/20_util/to_chars/double.cc: Run this test only on
 116         size32plus targets.
 117         * testsuite/20_util/to_chars/float.cc: Likewise.
 118         * testsuite/20_util/to_chars/long_double.cc: Likewise.
 119
 120 2021-05-18  Patrick Palka  <ppalka@redhat.com>
 121
 122         PR libstdc++/100631
 123         * include/std/ranges (elements_view::_Sentinel::operator-): Use
 124         _M_distance_from in the other operator- overload too.
 125         * testsuite/std/ranges/adaptors/elements.cc (test06): Augment test.
 126
 127 2021-05-18  Thomas Schwinge  <thomas@codesourcery.com>
 128
 129         * testsuite/lib/prune.exp: Add note about 'dg-note'.
 130
 131 2021-05-18  Patrick Palka  <ppalka@redhat.com>
 132
 133         PR libstdc++/100475
 134         * include/std/ranges (__box::__box): Use non-list-initialization
 135         in member initializer list of in-place constructor of the
 136         partial specialization for semiregular types.
 137         (__box::operator->): Use std::__addressof.
 138         * testsuite/std/ranges/adaptors/detail/semiregular_box.cc
 139         (test02): New test.
 140         * testsuite/std/ranges/single_view.cc (test04): New test.
 141
 142 2021-05-18  Patrick Palka  <ppalka@redhat.com>
 143
 144         PR libstdc++/100621
 145         * include/std/ranges (reverse_view::_S_needs_cached_begin):
 146         Set to true if the underlying non-common random-access range
 147         doesn't have a sized sentinel.
 148
 149 2021-05-18  Patrick Palka  <ppalka@redhat.com>
 150
 151         PR libstdc++/100631
 152         * include/std/ranges (elements_view::_Iterator): Also befriend
 153         _Sentinel<!_Const>.
 154         (elements_view::_Sentinel::_M_equal): Templatize.
 155         (elements_view::_Sentinel::_M_distance_from): Split out from ...
 156         (elements_view::_Sentinel::operator-): ... here.  Depend on
 157         _Base2 instead of _Base in the return type.
 158         * testsuite/std/ranges/adaptors/elements.cc (test06, test07):
 159         New tests.
 160
 161 2021-05-17  Thomas Rodgers  <rodgert@twrodgers.com>
 162
 163         * include/bits/atomic_wait.h (__waiter::_M_do_wait_v): loop
 164         until value change observed.
 165         (__waiter_base::_M_laundered): New member.
 166         (__waiter_base::_M_notify): Check _M_laundered to determine
 167         whether to wake one or all.
 168         (__detail::__atomic_compare): Return true if call to
 169         __builtin_memcmp() == 0.
 170         (__waiter_base::_S_do_spin_v): Adjust predicate.
 171         * testsuite/29_atomics/atomic/wait_notify/100334.cc: New
 172         test.
 173
 174 2021-05-17  Jonathan Wakely  <jwakely@redhat.com>
 175
 176         PR libstdc++/100630
 177         * include/experimental/bits/fs_path.h (__is_constructible_from):
 178         Test construction from a const lvalue, not an rvalue.
 179         * testsuite/27_io/filesystem/path/construct/100630.cc: New test.
 180         * testsuite/experimental/filesystem/path/construct/100630.cc:
 181         New test.
 182
 183 2021-05-17  Antony Polukhin  <antoshkka@gmail.com>
 184
 185         PR libstdc++/89728
 186         * include/bits/locale_facets.h (ctype<basic_string<C,T,A>>):
 187         Declare (but do not define) partial specialization.
 188         * testsuite/22_locale/ctype/is/string/89728_neg.cc: New test.
 189
 190 2021-05-17  Jonathan Wakely  <jwakely@redhat.com>
 191
 192         * include/std/thread (jthread::_S_create): Fix static assert
 193         message.
 194         * testsuite/30_threads/jthread/95989.cc: Re-enable test.
 195         * testsuite/30_threads/jthread/jthread.cc: Do not require
 196         pthread effective target.
 197         * testsuite/30_threads/jthread/2.cc: Moved to...
 198         * testsuite/30_threads/jthread/version.cc: ...here.
 199
 200 2021-05-17  Jonathan Wakely  <jwakely@redhat.com>
 201
 202         * doc/Makefile.am: Simplify doxygen recipes and use --latex_cmd.
 203         * doc/Makefile.in: Regenerate.
 204         * doc/doxygen/user.cfg.in (LATEX_CMD_NAME): Add placeholder
 205         value.
 206         * scripts/run_doxygen (print_usage): Always print to stdout and
 207         do not exit.
 208         (fail): New function for exiting on error.
 209         (parse_options): Handle --latex_cmd. Do not treat --help the
 210         same as errors. Simplify handling of required arguments.
 211
 212 2021-05-12  Jonathan Wakely  <jwakely@redhat.com>
 213
 214         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc:
 215         Increase dg-timeout-factor to 4. Fix -Wunused-parameter
 216         warnings. Replace bitwise AND with logical AND in loop
 217         condition.
 218         * testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc:
 219         Replace bitwise AND with logical AND in loop condition.
 220         * testsuite/util/pstl/test_utils.h: Remove unused parameter
 221         names.
 222
 223 2021-05-11  Patrick Palka  <ppalka@redhat.com>
 224
 225         * src/c++17/ryu/LOCAL_PATCHES: Update.
 226         * src/c++17/ryu/ryu_generic_128.h: Remove extern "C".
 227         Remove declarations for never-defined functions.
 228         * testsuite/20_util/to_chars/4.cc: New test.
 229
 230 2021-05-11  Jonathan Wakely  <jwakely@redhat.com>
 231
 232         * testsuite/20_util/headers/memory/synopsis.cc: Define C++98
 233         alternative for macro.
 234         * testsuite/20_util/shared_ptr/creation/99006.cc: Add effective
 235         target keyword.
 236         * testsuite/25_algorithms/copy/debug/99402.cc: Avoid C++11
 237         syntax.
 238
 239 2021-05-11  Jonathan Wakely  <jwakely@redhat.com>
 240
 241         * include/bits/allocator.h (allocator<void>) [C++20]: Add
 242         missing noexcept to constructor. Restore missing POCMA and
 243         is_always_equal_traits.
 244         [C++17]: Make construct and destroy members private and
 245         declare allocator_traits as a friend.
 246         * include/bits/memoryfwd.h (allocator_traits): Declare.
 247         * include/ext/malloc_allocator.h (malloc_allocator::allocate):
 248         Add nodiscard attribute. Add static assertion for LWG 3307.
 249         * include/ext/new_allocator.h (new_allocator::allocate): Add
 250         static assertion for LWG 3307.
 251         * testsuite/20_util/allocator/void.cc: Check that converting
 252         constructor is noexcept. Check for propagation traits and
 253         size_type and difference_type. Check that pointer and
 254         const_pointer are gone in C++20.
 255
 256 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
 257
 258         * include/std/stop_token: Remove TODO comment.
 259
 260 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
 261
 262         * include/bits/shared_ptr_base.h (__shared_count(unique_ptr&&)):
 263         Initialize a non-reference deleter from an rvalue, as per LWG
 264         3548.
 265         (__shared_ptr::_UniqCompatible): Add missing constraint.
 266         * testsuite/20_util/shared_ptr/cons/lwg3548.cc: New test.
 267         * testsuite/20_util/shared_ptr/cons/unique_ptr_deleter.cc: Check
 268         constraints.
 269
 270 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
 271
 272         * testsuite/17_intro/headers/c++2017/all_attributes.cc: Remove
 273         -std=gnu++17 from dg-options directive.
 274         * testsuite/17_intro/headers/c++2017/all_no_exceptions.cc:
 275         Likewise.
 276         * testsuite/17_intro/headers/c++2017/all_pedantic_errors.cc:
 277         Likewise.
 278         * testsuite/17_intro/headers/c++2017/operator_names.cc:
 279         Likewise.
 280         * testsuite/17_intro/headers/c++2017/parallel_mode.cc: Likewise.
 281         * testsuite/17_intro/headers/c++2017/stdc++.cc: Likewise.
 282         * testsuite/17_intro/headers/c++2017/stdc++_multiple_inclusion.cc:
 283         Likewise.
 284         * testsuite/18_support/aligned_alloc/aligned_alloc.cc: Likewise.
 285         * testsuite/18_support/byte/81076.cc: Likewise.
 286         * testsuite/18_support/byte/global_neg.cc: Likewise.
 287         * testsuite/18_support/byte/ops.cc: Likewise.
 288         * testsuite/18_support/byte/requirements.cc: Likewise.
 289         * testsuite/18_support/headers/cfloat/values_c++17.cc: Likewise.
 290         * testsuite/18_support/launder/1.cc: Likewise.
 291         * testsuite/18_support/launder/nodiscard.cc: Likewise.
 292         * testsuite/18_support/launder/requirements.cc: Likewise.
 293         * testsuite/18_support/launder/requirements_neg.cc: Likewise.
 294         * testsuite/18_support/new_aligned.cc: Likewise.
 295         * testsuite/18_support/uncaught_exceptions/uncaught_exceptions.cc:
 296         Likewise.
 297         * testsuite/19_diagnostics/error_code/is_error_code_v.cc:
 298         Likewise.
 299         * testsuite/19_diagnostics/error_condition/hash.cc: Likewise.
 300         * testsuite/20_util/addressof/requirements/constexpr.cc:
 301         Likewise.
 302         * testsuite/20_util/as_const/1.cc: Likewise.
 303         * testsuite/20_util/as_const/rvalue_neg.cc: Likewise.
 304         * testsuite/20_util/bind/83427.cc: Likewise.
 305         * testsuite/20_util/bind/is_placeholder_v.cc: Likewise.
 306         * testsuite/20_util/bool_constant/requirements.cc: Likewise.
 307         * testsuite/20_util/duration/arithmetic/constexpr_c++17.cc:
 308         Likewise.
 309         * testsuite/20_util/duration/requirements/treat_as_floating_point_v.cc:
 310         Likewise.
 311         * testsuite/20_util/duration_cast/rounding.cc: Likewise.
 312         * testsuite/20_util/enable_shared_from_this/members/weak_from_this.cc:
 313         Likewise.
 314         * testsuite/20_util/from_chars/1_neg.cc: Likewise.
 315         * testsuite/20_util/from_chars/requirements.cc: Likewise.
 316         * testsuite/20_util/function/91456.cc: Likewise.
 317         * testsuite/20_util/function/cons/deduction.cc: Likewise.
 318         * testsuite/20_util/function_objects/83607.cc: Likewise.
 319         * testsuite/20_util/function_objects/invoke/59768.cc: Likewise.
 320         * testsuite/20_util/function_objects/mem_fn/80478.cc: Likewise.
 321         * testsuite/20_util/function_objects/not_fn/1.cc: Likewise.
 322         * testsuite/20_util/function_objects/not_fn/87538.cc: Likewise.
 323         * testsuite/20_util/has_unique_object_representations/requirements/explicit_instantiation.cc:
 324         Likewise.
 325         * testsuite/20_util/has_unique_object_representations/requirements/typedefs.cc:
 326         Likewise.
 327         * testsuite/20_util/has_unique_object_representations/value.cc:
 328         Likewise.
 329         * testsuite/20_util/hash/nullptr.cc: Likewise.
 330         * testsuite/20_util/in_place/requirements.cc: Likewise.
 331         * testsuite/20_util/is_aggregate/incomplete_neg.cc: Likewise.
 332         * testsuite/20_util/is_aggregate/requirements/explicit_instantiation.cc:
 333         Likewise.
 334         * testsuite/20_util/is_aggregate/requirements/typedefs.cc:
 335         Likewise.
 336         * testsuite/20_util/is_aggregate/value.cc: Likewise.
 337         * testsuite/20_util/is_invocable/83395.cc: Likewise.
 338         * testsuite/20_util/is_invocable/91456.cc: Likewise.
 339         * testsuite/20_util/is_invocable/requirements/explicit_instantiation.cc:
 340         Likewise.
 341         * testsuite/20_util/is_invocable/requirements/typedefs.cc:
 342         Likewise.
 343         * testsuite/20_util/is_invocable/value.cc: Likewise.
 344         * testsuite/20_util/is_literal_type/deprecated-1z.cc: Likewise.
 345         * testsuite/20_util/is_nothrow_constructible/94003.cc: Likewise.
 346         * testsuite/20_util/is_nothrow_invocable/83395.cc: Likewise.
 347         * testsuite/20_util/is_nothrow_invocable/requirements/explicit_instantiation.cc:
 348         Likewise.
 349         * testsuite/20_util/is_nothrow_invocable/requirements/typedefs.cc: Likewise.
 350         * testsuite/20_util/is_nothrow_invocable/value.cc: Likewise.
 351         * testsuite/20_util/is_nothrow_swappable/requirements/explicit_instantiation.cc:
 352         Likewise.
 353         * testsuite/20_util/is_nothrow_swappable/requirements/typedefs.cc:
 354         Likewise.
 355         * testsuite/20_util/is_nothrow_swappable/value.cc: Likewise.
 356         * testsuite/20_util/is_nothrow_swappable_with/requirements/explicit_instantiation.cc:
 357         Likewise.
 358         * testsuite/20_util/is_nothrow_swappable_with/requirements/typedefs.cc:
 359         Likewise.
 360         * testsuite/20_util/is_nothrow_swappable_with/value.cc:
 361         Likewise.
 362         * testsuite/20_util/is_swappable/requirements/explicit_instantiation.cc:
 363         Likewise.
 364         * testsuite/20_util/is_swappable/requirements/typedefs.cc:
 365         Likewise.
 366         * testsuite/20_util/is_swappable/value.cc: Likewise.
 367         * testsuite/20_util/is_swappable_with/requirements/explicit_instantiation.cc:
 368         Likewise.
 369         * testsuite/20_util/is_swappable_with/requirements/typedefs.cc:
 370         Likewise.
 371         * testsuite/20_util/is_swappable_with/value.cc: Likewise.
 372         * testsuite/20_util/logical_traits/83134.cc: Likewise.
 373         * testsuite/20_util/logical_traits/requirements/explicit_instantiation.cc:
 374         Likewise.
 375         * testsuite/20_util/logical_traits/requirements/typedefs.cc:
 376         Likewise.
 377         * testsuite/20_util/logical_traits/value.cc: Likewise.
 378         * testsuite/20_util/pair/cons/deduction.cc: Likewise.
 379         * testsuite/20_util/pair/swap_cxx17.cc: Likewise.
 380         * testsuite/20_util/ratio/requirements/ratio_equal_v.cc:
 381         Likewise.
 382         * testsuite/20_util/reference_wrapper/83427.cc: Likewise.
 383         * testsuite/20_util/reference_wrapper/deduction.cc: Likewise.
 384         * testsuite/20_util/shared_ptr/casts/reinterpret.cc: Likewise.
 385         * testsuite/20_util/shared_ptr/cons/deduction.cc: Likewise.
 386         * testsuite/20_util/shared_ptr/requirements/weak_type.cc:
 387         Likewise.
 388         * testsuite/20_util/time_point/arithmetic/constexpr.cc:
 389         Likewise.
 390         * testsuite/20_util/time_point_cast/rounding.cc: Likewise.
 391         * testsuite/20_util/to_chars/3.cc: Likewise.
 392         * testsuite/20_util/to_chars/chars_format.cc: Likewise.
 393         * testsuite/20_util/to_chars/lwg3266.cc: Likewise.
 394         * testsuite/20_util/to_chars/requirements.cc: Likewise.
 395         * testsuite/20_util/tuple/78939.cc: Likewise.
 396         * testsuite/20_util/tuple/apply/1.cc: Likewise.
 397         * testsuite/20_util/tuple/apply/2.cc: Likewise.
 398         * testsuite/20_util/tuple/cons/deduction.cc: Likewise.
 399         * testsuite/20_util/tuple/make_from_tuple/1.cc: Likewise.
 400         * testsuite/20_util/tuple/make_from_tuple/2.cc: Likewise.
 401         * testsuite/20_util/tuple/swap_cxx17.cc: Likewise.
 402         * testsuite/20_util/tuple/tuple_size_v.cc: Likewise.
 403         * testsuite/20_util/unique_ptr/cons/deduction_neg.cc: Likewise.
 404         * testsuite/20_util/uses_allocator/requirements/uses_allocator_v.cc:
 405         Likewise.
 406         * testsuite/20_util/variable_templates_for_traits.cc: Likewise.
 407         * testsuite/20_util/void_t/1.cc: Likewise.
 408         * testsuite/20_util/weak_ptr/cons/deduction.cc: Likewise.
 409         * testsuite/24_iterators/container_access.cc: Likewise.
 410         * testsuite/24_iterators/headers/iterator/range_access_c++17.cc:
 411         Likewise.
 412         * testsuite/24_iterators/headers/iterator/synopsis_c++17.cc:
 413         Likewise.
 414         * testsuite/24_iterators/range_access/range_access_cpp17.cc:
 415         Likewise.
 416         * testsuite/24_iterators/range_access/range_access_cpp17_neg.cc:
 417         Likewise.
 418         * testsuite/26_numerics/gcd/gcd_neg.cc: Likewise.
 419         * testsuite/26_numerics/headers/cmath/functions_std_c++17.cc:
 420         Likewise.
 421         * testsuite/26_numerics/headers/cmath/hypot.cc: Likewise.
 422         * testsuite/26_numerics/headers/cmath/special_functions_global.cc:
 423         Likewise.
 424         * testsuite/26_numerics/lcm/1.cc: Likewise.
 425         * testsuite/26_numerics/lcm/lcm_neg.cc: Likewise.
 426         * testsuite/26_numerics/valarray/deduction.cc: Likewise.
 427         * testsuite/27_io/basic_ostream/inserters_other/char/lwg2221.cc:
 428         Likewise.
 429         * testsuite/27_io/manipulators/standard/char/quoted_sv.cc:
 430         Likewise.
 431         * testsuite/27_io/manipulators/standard/wchar_t/quoted_sv.cc:
 432         Likewise.
 433         * testsuite/27_io/types/4.cc: Likewise.
 434         * testsuite/28_regex/basic_regex/ctors/deduction.cc: Likewise.
 435         * testsuite/libstdc++-prettyprinters/91997.cc: Likewise.
 436         * testsuite/libstdc++-prettyprinters/cxx17.cc: Likewise.
 437
 438 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
 439
 440         * testsuite/20_util/function_objects/searchers.cc: Remove
 441         -std=gnu++17 from dg-options directive.
 442         * testsuite/20_util/specialized_algorithms/memory_management_tools/1.cc:
 443         Likewise.
 444         * testsuite/20_util/specialized_algorithms/memory_management_tools/destroy_neg.cc:
 445         Likewise.
 446         * testsuite/20_util/specialized_algorithms/uninitialized_value_construct/94540.cc:
 447         Likewise.
 448         * testsuite/20_util/specialized_algorithms/uninitialized_value_construct/94831.cc:
 449         Likewise.
 450         * testsuite/20_util/specialized_algorithms/uninitialized_value_construct_n/94540.cc:
 451         Likewise.
 452         * testsuite/20_util/specialized_algorithms/uninitialized_value_construct_n/sizes.cc:
 453         Likewise.
 454         * testsuite/20_util/unique_ptr/specialized_algorithms/swap_cxx17.cc:
 455         Likewise.
 456         * testsuite/25_algorithms/clamp/1.cc: Likewise.
 457         * testsuite/25_algorithms/clamp/2.cc: Likewise.
 458         * testsuite/25_algorithms/clamp/constexpr.cc: Likewise.
 459         * testsuite/25_algorithms/clamp/requirements/explicit_instantiation/1.cc:
 460         Likewise.
 461         * testsuite/25_algorithms/clamp/requirements/explicit_instantiation/pod.cc:
 462         Likewise.
 463         * testsuite/25_algorithms/for_each/for_each_n.cc: Likewise.
 464         * testsuite/25_algorithms/for_each/for_each_n_debug.cc:
 465         Likewise.
 466         * testsuite/25_algorithms/sample/1.cc: Likewise.
 467         * testsuite/25_algorithms/sample/2.cc: Likewise.
 468         * testsuite/25_algorithms/sample/3.cc: Likewise.
 469         * testsuite/25_algorithms/sample/81221.cc: Likewise.
 470         * testsuite/25_algorithms/search/searcher.cc: Likewise.
 471         * testsuite/26_numerics/exclusive_scan/1.cc: Likewise.
 472         * testsuite/26_numerics/inclusive_scan/1.cc: Likewise.
 473         * testsuite/26_numerics/reduce/1.cc: Likewise.
 474         * testsuite/26_numerics/reduce/2.cc: Likewise.
 475         * testsuite/26_numerics/transform_exclusive_scan/1.cc: Likewise.
 476         * testsuite/26_numerics/transform_inclusive_scan/1.cc: Likewise.
 477         * testsuite/26_numerics/transform_reduce/1.cc: Likewise.
 478
 479 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
 480
 481         * testsuite/23_containers/array/cons/deduction.cc: Remove
 482         -std=gnu++17 from dg-options directive.
 483         * testsuite/23_containers/array/cons/deduction_neg.cc: Likewise.
 484         * testsuite/23_containers/array/element_access/constexpr_c++17.cc:
 485         Likewise.
 486         * testsuite/23_containers/array/requirements/constexpr_iter.cc:
 487         Likewise.
 488         * testsuite/23_containers/array/specialized_algorithms/swap_cxx17.cc:
 489         Likewise.
 490         * testsuite/23_containers/deque/cons/deduction.cc: Likewise.
 491         * testsuite/23_containers/deque/modifiers/emplace/cxx17_return.cc:
 492         Likewise.
 493         * testsuite/23_containers/forward_list/cons/deduction.cc:
 494         Likewise.
 495         * testsuite/23_containers/forward_list/modifiers/emplace_cxx17_return.cc:
 496         Likewise.
 497         * testsuite/23_containers/list/cons/deduction.cc: Likewise.
 498         * testsuite/23_containers/list/modifiers/emplace/cxx17_return.cc:
 499         Likewise.
 500         * testsuite/23_containers/map/cons/deduction.cc: Likewise.
 501         * testsuite/23_containers/map/modifiers/extract.cc: Likewise.
 502         * testsuite/23_containers/map/modifiers/insert/83226.cc:
 503         Likewise.
 504         * testsuite/23_containers/map/modifiers/insert_or_assign/1.cc:
 505         Likewise.
 506         * testsuite/23_containers/map/modifiers/merge.cc: Likewise.
 507         * testsuite/23_containers/map/modifiers/try_emplace/1.cc:
 508         Likewise.
 509         * testsuite/23_containers/multimap/cons/deduction.cc: Likewise.
 510         * testsuite/23_containers/multimap/modifiers/extract.cc:
 511         Likewise.
 512         * testsuite/23_containers/multimap/modifiers/merge.cc: Likewise.
 513         * testsuite/23_containers/multiset/cons/deduction.cc: Likewise.
 514         * testsuite/23_containers/multiset/modifiers/extract.cc:
 515         Likewise.
 516         * testsuite/23_containers/multiset/modifiers/merge.cc: Likewise.
 517         * testsuite/23_containers/priority_queue/deduction.cc: Likewise.
 518         * testsuite/23_containers/queue/deduction.cc: Likewise.
 519         * testsuite/23_containers/queue/members/emplace_cxx17_return.cc:
 520         Likewise.
 521         * testsuite/23_containers/set/cons/deduction.cc: Likewise.
 522         * testsuite/23_containers/set/modifiers/extract.cc: Likewise.
 523         * testsuite/23_containers/set/modifiers/merge.cc: Likewise.
 524         * testsuite/23_containers/set/modifiers/node_swap.cc: Likewise.
 525         * testsuite/23_containers/stack/deduction.cc: Likewise.
 526         * testsuite/23_containers/stack/members/emplace_cxx17_return.cc:
 527         Likewise.
 528         * testsuite/23_containers/unordered_map/cons/deduction.cc:
 529         Likewise.
 530         * testsuite/23_containers/unordered_map/modifiers/extract.cc:
 531         Likewise.
 532         * testsuite/23_containers/unordered_map/modifiers/insert_or_assign.cc:
 533         Likewise.
 534         * testsuite/23_containers/unordered_map/modifiers/merge.cc:
 535         Likewise.
 536         * testsuite/23_containers/unordered_map/modifiers/try_emplace.cc:
 537         Likewise.
 538         * testsuite/23_containers/unordered_multimap/cons/deduction.cc:
 539         Likewise.
 540         * testsuite/23_containers/unordered_multimap/modifiers/extract.cc:
 541         Likewise.
 542         * testsuite/23_containers/unordered_multimap/modifiers/merge.cc:
 543         Likewise.
 544         * testsuite/23_containers/unordered_multiset/cons/deduction.cc:
 545         Likewise.
 546         * testsuite/23_containers/unordered_multiset/modifiers/extract.cc:
 547         Likewise.
 548         * testsuite/23_containers/unordered_multiset/modifiers/merge.cc:
 549         Likewise.
 550         * testsuite/23_containers/unordered_set/cons/deduction.cc:
 551         Likewise.
 552         * testsuite/23_containers/unordered_set/modifiers/extract.cc:
 553         Likewise.
 554         * testsuite/23_containers/unordered_set/modifiers/merge.cc:
 555         Likewise.
 556         * testsuite/23_containers/vector/bool/emplace_cxx17_return.cc:
 557         Likewise.
 558         * testsuite/23_containers/vector/cons/89164_c++17.cc: Likewise.
 559         * testsuite/23_containers/vector/cons/deduction.cc: Likewise.
 560         * testsuite/23_containers/vector/modifiers/emplace/cxx17_return.cc:
 561         Likewise.
 562
 563 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
 564
 565         * testsuite/21_strings/basic_string/79162.cc: Remove
 566         -std=gnu++17 from dg-options directive.
 567         * testsuite/21_strings/basic_string/cons/char/7.cc: Likewise.
 568         * testsuite/21_strings/basic_string/cons/char/79162.cc:
 569         Likewise.
 570         * testsuite/21_strings/basic_string/cons/char/86138.cc:
 571         Likewise.
 572         * testsuite/21_strings/basic_string/cons/char/9.cc: Likewise.
 573         * testsuite/21_strings/basic_string/cons/char/deduction.cc:
 574         Likewise.
 575         * testsuite/21_strings/basic_string/cons/char/moveable2_c++17.cc:
 576         Likewise.
 577         * testsuite/21_strings/basic_string/cons/wchar_t/7.cc: Likewise.
 578         * testsuite/21_strings/basic_string/cons/wchar_t/79162.cc:
 579         Likewise.
 580         * testsuite/21_strings/basic_string/cons/wchar_t/86138.cc:
 581         Likewise.
 582         * testsuite/21_strings/basic_string/cons/wchar_t/9.cc: Likewise.
 583         * testsuite/21_strings/basic_string/cons/wchar_t/deduction.cc:
 584         Likewise.
 585         * testsuite/21_strings/basic_string/cons/wchar_t/moveable2_c++17.cc:
 586         Likewise.
 587         * testsuite/21_strings/basic_string/hash/hash.cc: Likewise.
 588         * testsuite/21_strings/basic_string/lwg2758.cc: Likewise.
 589         * testsuite/21_strings/basic_string/lwg2946.cc: Likewise.
 590         * testsuite/21_strings/basic_string/modifiers/append/char/4.cc:
 591         Likewise.
 592         * testsuite/21_strings/basic_string/modifiers/append/wchar_t/4.cc:
 593         Likewise.
 594         * testsuite/21_strings/basic_string/modifiers/assign/char/4.cc:
 595         Likewise.
 596         * testsuite/21_strings/basic_string/modifiers/assign/wchar_t/4.cc:
 597         Likewise.
 598         * testsuite/21_strings/basic_string/modifiers/insert/char/3.cc:
 599         Likewise.
 600         * testsuite/21_strings/basic_string/modifiers/insert/wchar_t/3.cc:
 601         Likewise.
 602         * testsuite/21_strings/basic_string/modifiers/replace/char/7.cc:
 603         Likewise.
 604         * testsuite/21_strings/basic_string/modifiers/replace/wchar_t/7.cc:
 605         Likewise.
 606         * testsuite/21_strings/basic_string/operations/compare/char/2.cc:
 607         Likewise.
 608         * testsuite/21_strings/basic_string/operations/compare/wchar_t/2.cc:
 609         Likewise.
 610         * testsuite/21_strings/basic_string/operations/data/char/2.cc:
 611         Likewise.
 612         * testsuite/21_strings/basic_string/operations/data/char/86169.cc:
 613         Likewise.
 614         * testsuite/21_strings/basic_string/operations/data/wchar_t/2.cc:
 615         Likewise.
 616         * testsuite/21_strings/basic_string/operations/find/char/5.cc:
 617         Likewise.
 618         * testsuite/21_strings/basic_string/operations/find/wchar_t/5.cc:
 619         Likewise.
 620         * testsuite/21_strings/basic_string/operators/char/5.cc:
 621         Likewise.
 622         * testsuite/21_strings/basic_string/operators/wchar_t/5.cc:
 623         Likewise.
 624         * testsuite/21_strings/basic_string_view/capacity/1.cc:
 625         Likewise.
 626         * testsuite/21_strings/basic_string_view/capacity/empty_neg.cc:
 627         Likewise.
 628         * testsuite/21_strings/basic_string_view/cons/char/1.cc:
 629         Likewise.
 630         * testsuite/21_strings/basic_string_view/cons/char/2.cc:
 631         Likewise.
 632         * testsuite/21_strings/basic_string_view/cons/char/3.cc:
 633         Likewise.
 634         * testsuite/21_strings/basic_string_view/cons/char/nonnull.cc:
 635         Likewise.
 636         * testsuite/21_strings/basic_string_view/cons/wchar_t/1.cc:
 637         Likewise.
 638         * testsuite/21_strings/basic_string_view/cons/wchar_t/2.cc:
 639         Likewise.
 640         * testsuite/21_strings/basic_string_view/cons/wchar_t/3.cc:
 641         Likewise.
 642         * testsuite/21_strings/basic_string_view/cons/wchar_t/nonnull.cc:
 643         Likewise.
 644         * testsuite/21_strings/basic_string_view/element_access/char/1.cc:
 645         Likewise.
 646         * testsuite/21_strings/basic_string_view/element_access/char/2.cc:
 647         Likewise.
 648         * testsuite/21_strings/basic_string_view/element_access/char/back_constexpr_neg.cc:
 649         Likewise.
 650         * testsuite/21_strings/basic_string_view/element_access/char/constexpr.cc:
 651         Likewise.
 652         * testsuite/21_strings/basic_string_view/element_access/char/constexpr_neg.cc:
 653         Likewise.
 654         * testsuite/21_strings/basic_string_view/element_access/char/empty.cc:
 655         Likewise.
 656         * testsuite/21_strings/basic_string_view/element_access/char/front_back.cc:
 657         Likewise.
 658         * testsuite/21_strings/basic_string_view/element_access/char/front_back_constexpr.cc:
 659         Likewise.
 660         * testsuite/21_strings/basic_string_view/element_access/char/front_constexpr_neg.cc:
 661         Likewise.
 662         * testsuite/21_strings/basic_string_view/element_access/wchar_t/1.cc:
 663         Likewise.
 664         * testsuite/21_strings/basic_string_view/element_access/wchar_t/2.cc:
 665         Likewise.
 666         * testsuite/21_strings/basic_string_view/element_access/wchar_t/back_constexpr_neg.cc:
 667         Likewise.
 668         * testsuite/21_strings/basic_string_view/element_access/wchar_t/constexpr.cc:
 669         Likewise.
 670         * testsuite/21_strings/basic_string_view/element_access/wchar_t/constexpr_neg.cc:
 671         Likewise.
 672         * testsuite/21_strings/basic_string_view/element_access/wchar_t/empty.cc:
 673         Likewise.
 674         * testsuite/21_strings/basic_string_view/element_access/wchar_t/front_back.cc:
 675         Likewise.
 676         * testsuite/21_strings/basic_string_view/element_access/wchar_t/front_constexpr_neg.cc:
 677         Likewise.
 678         * testsuite/21_strings/basic_string_view/include.cc: Likewise.
 679         * testsuite/21_strings/basic_string_view/inserters/94051.cc:
 680         Likewise.
 681         * testsuite/21_strings/basic_string_view/inserters/char/1.cc:
 682         Likewise.
 683         * testsuite/21_strings/basic_string_view/inserters/char/2.cc:
 684         Likewise.
 685         * testsuite/21_strings/basic_string_view/inserters/char/3.cc:
 686         Likewise.
 687         * testsuite/21_strings/basic_string_view/inserters/pod/10081-out.cc:
 688         Likewise.
 689         * testsuite/21_strings/basic_string_view/inserters/wchar_t/1.cc:
 690         Likewise.
 691         * testsuite/21_strings/basic_string_view/inserters/wchar_t/2.cc:
 692         Likewise.
 693         * testsuite/21_strings/basic_string_view/inserters/wchar_t/3.cc:
 694         Likewise.
 695         * testsuite/21_strings/basic_string_view/literals/types-char8_t.cc:
 696         Likewise.
 697         * testsuite/21_strings/basic_string_view/literals/types.cc:
 698         Likewise.
 699         * testsuite/21_strings/basic_string_view/literals/values-char8_t.cc:
 700         Likewise.
 701         * testsuite/21_strings/basic_string_view/literals/values.cc:
 702         Likewise.
 703         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/char/1.cc:
 704         Likewise.
 705         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/wchar_t/1.cc:
 706         Likewise.
 707         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/char/1.cc:
 708         Likewise.
 709         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/wchar_t/1.cc:
 710         Likewise.
 711         * testsuite/21_strings/basic_string_view/modifiers/swap/char/1.cc:
 712         Likewise.
 713         * testsuite/21_strings/basic_string_view/modifiers/swap/wchar_t/1.cc:
 714         Likewise.
 715         * testsuite/21_strings/basic_string_view/operations/compare/char/1.cc:
 716         Likewise.
 717         * testsuite/21_strings/basic_string_view/operations/compare/char/13650.cc:
 718         Likewise.
 719         * testsuite/21_strings/basic_string_view/operations/compare/char/2.cc:
 720         Likewise.
 721         * testsuite/21_strings/basic_string_view/operations/compare/char/70483.cc:
 722         Likewise.
 723         * testsuite/21_strings/basic_string_view/operations/compare/char/nonnull.cc:
 724         Likewise.
 725         * testsuite/21_strings/basic_string_view/operations/compare/wchar_t/1.cc:
 726         Likewise.
 727         * testsuite/21_strings/basic_string_view/operations/compare/wchar_t/13650.cc:
 728         Likewise.
 729         * testsuite/21_strings/basic_string_view/operations/compare/wchar_t/2.cc:
 730         Likewise.
 731         * testsuite/21_strings/basic_string_view/operations/copy/char/1.cc:
 732         Likewise.
 733         * testsuite/21_strings/basic_string_view/operations/copy/char/2.cc:
 734         Likewise.
 735         * testsuite/21_strings/basic_string_view/operations/copy/wchar_t/1.cc:
 736         Likewise.
 737         * testsuite/21_strings/basic_string_view/operations/copy/wchar_t/2.cc:
 738         Likewise.
 739         * testsuite/21_strings/basic_string_view/operations/data/char/1.cc:
 740         Likewise.
 741         * testsuite/21_strings/basic_string_view/operations/data/wchar_t/1.cc:
 742         Likewise.
 743         * testsuite/21_strings/basic_string_view/operations/find/char/1.cc:
 744         Likewise.
 745         * testsuite/21_strings/basic_string_view/operations/find/char/2.cc:
 746         Likewise.
 747         * testsuite/21_strings/basic_string_view/operations/find/char/3.cc:
 748         Likewise.
 749         * testsuite/21_strings/basic_string_view/operations/find/char/4.cc:
 750         Likewise.
 751         * testsuite/21_strings/basic_string_view/operations/find/char/nonnull.cc:
 752         Likewise.
 753         * testsuite/21_strings/basic_string_view/operations/find/wchar_t/1.cc:
 754         Likewise.
 755         * testsuite/21_strings/basic_string_view/operations/find/wchar_t/2.cc:
 756         Likewise.
 757         * testsuite/21_strings/basic_string_view/operations/find/wchar_t/3.cc:
 758         Likewise.
 759         * testsuite/21_strings/basic_string_view/operations/find/wchar_t/4.cc:
 760         Likewise.
 761         * testsuite/21_strings/basic_string_view/operations/rfind/char/1.cc:
 762         Likewise.
 763         * testsuite/21_strings/basic_string_view/operations/rfind/char/2.cc:
 764         Likewise.
 765         * testsuite/21_strings/basic_string_view/operations/rfind/char/3.cc:
 766         Likewise.
 767         * testsuite/21_strings/basic_string_view/operations/rfind/char/nonnull.cc:
 768         Likewise.
 769         * testsuite/21_strings/basic_string_view/operations/rfind/wchar_t/1.cc:
 770         Likewise.
 771         * testsuite/21_strings/basic_string_view/operations/rfind/wchar_t/2.cc:
 772         Likewise.
 773         * testsuite/21_strings/basic_string_view/operations/rfind/wchar_t/3.cc:
 774         Likewise.
 775         * testsuite/21_strings/basic_string_view/operations/string_conversion/1.cc:
 776         Likewise.
 777         * testsuite/21_strings/basic_string_view/operations/substr/char/1.cc:
 778         Likewise.
 779         * testsuite/21_strings/basic_string_view/operations/substr/char/83511.cc:
 780         Likewise.
 781         * testsuite/21_strings/basic_string_view/operations/substr/wchar_t/1.cc:
 782         Likewise.
 783         * testsuite/21_strings/basic_string_view/operations/substr/wchar_t/83511.cc:
 784         Likewise.
 785         * testsuite/21_strings/basic_string_view/operators/char/2.cc:
 786         Likewise.
 787         * testsuite/21_strings/basic_string_view/operators/char/89446.cc:
 788         Likewise.
 789         * testsuite/21_strings/basic_string_view/operators/wchar_t/2.cc:
 790         Likewise.
 791         * testsuite/21_strings/basic_string_view/operators/wchar_t/89446.cc:
 792         Likewise.
 793         * testsuite/21_strings/basic_string_view/range_access/char/1.cc:
 794         Likewise.
 795         * testsuite/21_strings/basic_string_view/range_access/wchar_t/1.cc:
 796         Likewise.
 797         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/1.cc:
 798         Likewise.
 799         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char/1.cc:
 800         Likewise.
 801         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char16_t/1.cc:
 802         Likewise.
 803         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char32_t/1.cc:
 804         Likewise.
 805         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char8_t/1.cc:
 806         Likewise.
 807         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/wchar_t/1.cc:
 808         Likewise.
 809         * testsuite/21_strings/basic_string_view/requirements/traits_neg.cc:
 810         Likewise.
 811         * testsuite/21_strings/basic_string_view/requirements/typedefs.cc:
 812         Likewise.
 813         * testsuite/21_strings/basic_string_view/typedefs.cc: Likewise.
 814         * testsuite/21_strings/basic_string_view/types/1.cc: Likewise.
 815         * testsuite/21_strings/char_traits/requirements/char/99181.cc:
 816         Likewise.
 817         * testsuite/21_strings/char_traits/requirements/constexpr_functions_c++17.cc:
 818
 819 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
 820
 821         * testsuite/20_util/memory_resource/1.cc: Remove -std=gnu++17
 822         from dg-options directive.
 823         * testsuite/20_util/memory_resource/2.cc: Likewise.
 824         * testsuite/20_util/monotonic_buffer_resource/1.cc: Likewise.
 825         * testsuite/20_util/monotonic_buffer_resource/93208.cc:
 826         Likewise.
 827         * testsuite/20_util/monotonic_buffer_resource/allocate.cc:
 828         Likewise.
 829         * testsuite/20_util/monotonic_buffer_resource/deallocate.cc:
 830         Likewise.
 831         * testsuite/20_util/monotonic_buffer_resource/release.cc:
 832         Likewise.
 833         * testsuite/20_util/monotonic_buffer_resource/upstream_resource.cc:
 834         Likewise.
 835         * testsuite/20_util/polymorphic_allocator/1.cc: Likewise.
 836         * testsuite/20_util/polymorphic_allocator/construct_pair.cc:
 837         Likewise.
 838         * testsuite/20_util/polymorphic_allocator/resource.cc: Likewise.
 839         * testsuite/20_util/polymorphic_allocator/select.cc: Likewise.
 840         * testsuite/20_util/synchronized_pool_resource/allocate.cc:
 841         Likewise.
 842         * testsuite/20_util/synchronized_pool_resource/allocate_single.cc:
 843         Likewise.
 844         * testsuite/20_util/synchronized_pool_resource/cons.cc:
 845         Likewise.
 846         * testsuite/20_util/synchronized_pool_resource/cons_single.cc:
 847         Likewise.
 848         * testsuite/20_util/synchronized_pool_resource/is_equal.cc:
 849         Likewise.
 850         * testsuite/20_util/synchronized_pool_resource/multithreaded.cc:
 851         Likewise.
 852         * testsuite/20_util/synchronized_pool_resource/options.cc:
 853         Likewise.
 854         * testsuite/20_util/synchronized_pool_resource/release.cc:
 855         Likewise.
 856         * testsuite/20_util/synchronized_pool_resource/release_single.cc:
 857         Likewise.
 858         * testsuite/20_util/unsynchronized_pool_resource/allocate-max-chunks.cc:
 859         Likewise.
 860         * testsuite/20_util/unsynchronized_pool_resource/allocate.cc:
 861         Likewise.
 862         * testsuite/20_util/unsynchronized_pool_resource/cons.cc:
 863         Likewise.
 864         * testsuite/20_util/unsynchronized_pool_resource/is_equal.cc:
 865         Likewise.
 866         * testsuite/20_util/unsynchronized_pool_resource/options.cc:
 867         Likewise.
 868         * testsuite/20_util/unsynchronized_pool_resource/release.cc:
 869         Likewise.
 870         * testsuite/21_strings/basic_string/types/pmr_typedefs.cc:
 871         Likewise.
 872         * testsuite/23_containers/deque/types/pmr_typedefs.cc: Likewise.
 873         * testsuite/23_containers/deque/types/pmr_typedefs_debug.cc:
 874         Likewise.
 875         * testsuite/23_containers/forward_list/pmr_typedefs.cc:
 876         Likewise.
 877         * testsuite/23_containers/forward_list/pmr_typedefs_debug.cc:
 878         Likewise.
 879         * testsuite/23_containers/list/pmr_typedefs.cc: Likewise.
 880         * testsuite/23_containers/list/pmr_typedefs_debug.cc: Likewise.
 881         * testsuite/23_containers/map/pmr_typedefs.cc: Likewise.
 882         * testsuite/23_containers/map/pmr_typedefs_debug.cc: Likewise.
 883         * testsuite/23_containers/multimap/pmr_typedefs.cc: Likewise.
 884         * testsuite/23_containers/multimap/pmr_typedefs_debug.cc:
 885         Likewise.
 886         * testsuite/23_containers/multiset/pmr_typedefs.cc: Likewise.
 887         * testsuite/23_containers/multiset/pmr_typedefs_debug.cc:
 888         Likewise.
 889         * testsuite/23_containers/set/pmr_typedefs.cc: Likewise.
 890         * testsuite/23_containers/set/pmr_typedefs_debug.cc: Likewise.
 891         * testsuite/23_containers/unordered_map/pmr_typedefs.cc:
 892         Likewise.
 893         * testsuite/23_containers/unordered_map/pmr_typedefs_debug.cc:
 894         Likewise.
 895         * testsuite/23_containers/unordered_multimap/pmr_typedefs.cc:
 896         Likewise.
 897         * testsuite/23_containers/unordered_multimap/pmr_typedefs_debug.cc:
 898         Likewise.
 899         * testsuite/23_containers/unordered_multiset/pmr_typedefs.cc:
 900         Likewise.
 901         * testsuite/23_containers/unordered_multiset/pmr_typedefs_debug.cc:
 902         Likewise.
 903         * testsuite/23_containers/unordered_set/pmr_typedefs.cc:
 904         Likewise.
 905         * testsuite/23_containers/unordered_set/pmr_typedefs_debug.cc:
 906         Likewise.
 907         * testsuite/23_containers/vector/pmr_typedefs.cc: Likewise.
 908         * testsuite/23_containers/vector/types/pmr_typedefs_debug.cc:
 909         Likewise.
 910         * testsuite/28_regex/match_results/pmr_typedefs.cc: Likewise.
 911
 912 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
 913
 914         * testsuite/29_atomics/atomic/69769.cc: Remove -std=gnu++17 from
 915         dg-options.
 916         * testsuite/29_atomics/atomic/is_always_lock_free.cc:
 917         * testsuite/29_atomics/atomic/requirements/typedefs.cc:
 918         * testsuite/29_atomics/atomic_integral/is_always_lock_free.cc:
 919         * testsuite/29_atomics/atomic_integral/requirements/typedefs.cc:
 920         * testsuite/30_threads/lock_guard/cons/deduction.cc: Likewise.
 921         * testsuite/30_threads/scoped_lock/cons/1.cc: Likewise.
 922         * testsuite/30_threads/scoped_lock/cons/deduction.cc: Likewise.
 923         * testsuite/30_threads/scoped_lock/requirements/explicit_instantiation.cc:
 924         Likewise.
 925         * testsuite/30_threads/scoped_lock/requirements/typedefs.cc:
 926         Likewise.
 927         * testsuite/30_threads/shared_lock/70766.cc: Likewise.
 928         * testsuite/30_threads/shared_mutex/cons/1.cc: Likewise.
 929         * testsuite/30_threads/shared_mutex/cons/assign_neg.cc:
 930         Likewise.
 931         * testsuite/30_threads/shared_mutex/cons/copy_neg.cc: Likewise.
 932         * testsuite/30_threads/shared_mutex/requirements/standard_layout.cc:
 933         Likewise.
 934         * testsuite/30_threads/shared_mutex/try_lock/1.cc: Likewise.
 935         * testsuite/30_threads/shared_mutex/try_lock/2.cc: Likewise.
 936         * testsuite/30_threads/shared_mutex/unlock/1.cc: Likewise.
 937         * testsuite/30_threads/unique_lock/cons/deduction.cc: Likewise.
 938
 939 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
 940
 941         * testsuite/20_util/any/assign/1.cc: Remove -std=gnu++17 from
 942         dg-options directive.
 943         * testsuite/20_util/any/assign/2.cc: Likewise.
 944         * testsuite/20_util/any/assign/emplace.cc: Likewise.
 945         * testsuite/20_util/any/assign/exception.cc: Likewise.
 946         * testsuite/20_util/any/assign/self.cc: Likewise.
 947         * testsuite/20_util/any/cons/1.cc: Likewise.
 948         * testsuite/20_util/any/cons/2.cc: Likewise.
 949         * testsuite/20_util/any/cons/90415.cc: Likewise.
 950         * testsuite/20_util/any/cons/92156.cc: Likewise.
 951         * testsuite/20_util/any/cons/aligned.cc: Likewise.
 952         * testsuite/20_util/any/cons/explicit.cc: Likewise.
 953         * testsuite/20_util/any/cons/in_place.cc: Likewise.
 954         * testsuite/20_util/any/cons/nontrivial.cc: Likewise.
 955         * testsuite/20_util/any/make_any.cc: Likewise.
 956         * testsuite/20_util/any/misc/any_cast.cc: Likewise.
 957         * testsuite/20_util/any/misc/any_cast_neg.cc: Likewise.
 958         * testsuite/20_util/any/misc/any_cast_no_rtti.cc: Likewise.
 959         * testsuite/20_util/any/misc/swap.cc: Likewise.
 960         * testsuite/20_util/any/modifiers/1.cc: Likewise.
 961         * testsuite/20_util/any/modifiers/83658.cc: Likewise.
 962         * testsuite/20_util/any/modifiers/92156.cc: Likewise.
 963         * testsuite/20_util/any/observers/type.cc: Likewise.
 964         * testsuite/20_util/any/requirements.cc: Likewise.
 965         * testsuite/20_util/any/typedefs.cc: Likewise.
 966         * testsuite/20_util/optional/77288.cc: Likewise.
 967         * testsuite/20_util/optional/84601.cc: Likewise.
 968         * testsuite/20_util/optional/assignment/1.cc: Likewise.
 969         * testsuite/20_util/optional/assignment/2.cc: Likewise.
 970         * testsuite/20_util/optional/assignment/3.cc: Likewise.
 971         * testsuite/20_util/optional/assignment/4.cc: Likewise.
 972         * testsuite/20_util/optional/assignment/5.cc: Likewise.
 973         * testsuite/20_util/optional/assignment/6.cc: Likewise.
 974         * testsuite/20_util/optional/assignment/7.cc: Likewise.
 975         * testsuite/20_util/optional/assignment/8.cc: Likewise.
 976         * testsuite/20_util/optional/assignment/9.cc: Likewise.
 977         * testsuite/20_util/optional/bad_access.cc: Likewise.
 978         * testsuite/20_util/optional/cons/77727.cc: Likewise.
 979         * testsuite/20_util/optional/cons/85642.cc: Likewise.
 980         * testsuite/20_util/optional/cons/copy.cc: Likewise.
 981         * testsuite/20_util/optional/cons/deduction.cc: Likewise.
 982         * testsuite/20_util/optional/cons/default.cc: Likewise.
 983         * testsuite/20_util/optional/cons/move.cc: Likewise.
 984         * testsuite/20_util/optional/cons/trivial.cc: Likewise.
 985         * testsuite/20_util/optional/cons/value.cc: Likewise.
 986         * testsuite/20_util/optional/cons/value_neg.cc: Likewise.
 987         * testsuite/20_util/optional/constexpr/cons/default.cc:
 988         Likewise.
 989         * testsuite/20_util/optional/constexpr/cons/value.cc: Likewise.
 990         * testsuite/20_util/optional/constexpr/in_place.cc: Likewise.
 991         * testsuite/20_util/optional/constexpr/make_optional.cc:
 992         Likewise.
 993         * testsuite/20_util/optional/constexpr/nullopt.cc: Likewise.
 994         * testsuite/20_util/optional/constexpr/observers/1.cc: Likewise.
 995         * testsuite/20_util/optional/constexpr/observers/2.cc: Likewise.
 996         * testsuite/20_util/optional/constexpr/observers/3.cc: Likewise.
 997         * testsuite/20_util/optional/constexpr/observers/4.cc: Likewise.
 998         * testsuite/20_util/optional/constexpr/observers/5.cc: Likewise.
 999         * testsuite/20_util/optional/constexpr/relops/1.cc: Likewise.
1000         * testsuite/20_util/optional/constexpr/relops/2.cc: Likewise.
1001         * testsuite/20_util/optional/constexpr/relops/3.cc: Likewise.
1002         * testsuite/20_util/optional/constexpr/relops/4.cc: Likewise.
1003         * testsuite/20_util/optional/constexpr/relops/5.cc: Likewise.
1004         * testsuite/20_util/optional/constexpr/relops/6.cc: Likewise.
1005         * testsuite/20_util/optional/hash.cc: Likewise.
1006         * testsuite/20_util/optional/in_place.cc: Likewise.
1007         * testsuite/20_util/optional/make_optional.cc: Likewise.
1008         * testsuite/20_util/optional/nullopt.cc: Likewise.
1009         * testsuite/20_util/optional/observers/1.cc: Likewise.
1010         * testsuite/20_util/optional/observers/2.cc: Likewise.
1011         * testsuite/20_util/optional/observers/3.cc: Likewise.
1012         * testsuite/20_util/optional/observers/4.cc: Likewise.
1013         * testsuite/20_util/optional/observers/5.cc: Likewise.
1014         * testsuite/20_util/optional/observers/6.cc: Likewise.
1015         * testsuite/20_util/optional/relops/1.cc: Likewise.
1016         * testsuite/20_util/optional/relops/2.cc: Likewise.
1017         * testsuite/20_util/optional/relops/3.cc: Likewise.
1018         * testsuite/20_util/optional/relops/4.cc: Likewise.
1019         * testsuite/20_util/optional/relops/5.cc: Likewise.
1020         * testsuite/20_util/optional/relops/6.cc: Likewise.
1021         * testsuite/20_util/optional/relops/7.cc: Likewise.
1022         * testsuite/20_util/optional/requirements.cc: Likewise.
1023         * testsuite/20_util/optional/swap/1.cc: Likewise.
1024         * testsuite/20_util/optional/swap/2.cc: Likewise.
1025         * testsuite/20_util/optional/typedefs.cc: Likewise.
1026         * testsuite/20_util/variant/80165.cc: Likewise.
1027         * testsuite/20_util/variant/85183.cc: Likewise.
1028         * testsuite/20_util/variant/86874.cc: Likewise.
1029         * testsuite/20_util/variant/87431.cc: Likewise.
1030         * testsuite/20_util/variant/87619.cc: Likewise.
1031         * testsuite/20_util/variant/91807.cc: Likewise.
1032         * testsuite/20_util/variant/any.cc: Likewise.
1033         * testsuite/20_util/variant/compile.cc: Likewise.
1034         * testsuite/20_util/variant/deduction.cc: Likewise.
1035         * testsuite/20_util/variant/exception_safety.cc: Likewise.
1036         * testsuite/20_util/variant/hash.cc: Likewise.
1037         * testsuite/20_util/variant/index_type.cc: Likewise.
1038         * testsuite/20_util/variant/relops/89851.cc: Likewise.
1039         * testsuite/20_util/variant/relops/90008.cc: Likewise.
1040         * testsuite/20_util/variant/run.cc: Likewise.
1041         * testsuite/20_util/variant/visit.cc: Likewise.
1042
1043 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
1044
1045         * testsuite/27_io/basic_filebuf/open/char/path.cc: Remove
1046         -std=gnu++17 from dg-options directive.
1047         * testsuite/27_io/basic_fstream/cons/char/path.cc: Likewise.
1048         * testsuite/27_io/basic_fstream/open/char/path.cc: Likewise.
1049         * testsuite/27_io/basic_ifstream/cons/char/path.cc: Likewise.
1050         * testsuite/27_io/basic_ifstream/open/char/path.cc: Likewise.
1051         * testsuite/27_io/basic_ofstream/cons/char/path.cc: Likewise.
1052         * testsuite/27_io/basic_ofstream/open/char/path.cc: Likewise.
1053         * testsuite/27_io/filesystem/directory_entry/86597.cc: Likewise.
1054         * testsuite/27_io/filesystem/directory_entry/lwg3171.cc:
1055         Likewise.
1056         * testsuite/27_io/filesystem/file_status/1.cc: Likewise.
1057         * testsuite/27_io/filesystem/filesystem_error/cons.cc: Likewise.
1058         * testsuite/27_io/filesystem/filesystem_error/copy.cc: Likewise.
1059         * testsuite/27_io/filesystem/iterators/91067.cc: Likewise.
1060         * testsuite/27_io/filesystem/iterators/caching.cc: Likewise.
1061         * testsuite/27_io/filesystem/iterators/directory_iterator.cc:
1062         Likewise.
1063         * testsuite/27_io/filesystem/iterators/pop.cc: Likewise.
1064         * testsuite/27_io/filesystem/iterators/recursion_pending.cc:
1065         Likewise.
1066         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
1067         Likewise.
1068         * testsuite/27_io/filesystem/operations/absolute.cc: Likewise.
1069         * testsuite/27_io/filesystem/operations/all.cc: Likewise.
1070         * testsuite/27_io/filesystem/operations/canonical.cc: Likewise.
1071         * testsuite/27_io/filesystem/operations/copy.cc: Likewise.
1072         * testsuite/27_io/filesystem/operations/copy_file.cc: Likewise.
1073         * testsuite/27_io/filesystem/operations/create_directories.cc:
1074         Likewise.
1075         * testsuite/27_io/filesystem/operations/create_directory.cc:
1076         Likewise.
1077         * testsuite/27_io/filesystem/operations/create_symlink.cc:
1078         Likewise.
1079         * testsuite/27_io/filesystem/operations/current_path.cc:
1080         Likewise.
1081         * testsuite/27_io/filesystem/operations/equivalent.cc: Likewise.
1082         * testsuite/27_io/filesystem/operations/exists.cc: Likewise.
1083         * testsuite/27_io/filesystem/operations/file_size.cc: Likewise.
1084         * testsuite/27_io/filesystem/operations/is_empty.cc: Likewise.
1085         * testsuite/27_io/filesystem/operations/last_write_time.cc:
1086         Likewise.
1087         * testsuite/27_io/filesystem/operations/permissions.cc:
1088         Likewise.
1089         * testsuite/27_io/filesystem/operations/proximate.cc: Likewise.
1090         * testsuite/27_io/filesystem/operations/read_symlink.cc:
1091         Likewise.
1092         * testsuite/27_io/filesystem/operations/relative.cc: Likewise.
1093         * testsuite/27_io/filesystem/operations/remove.cc: Likewise.
1094         * testsuite/27_io/filesystem/operations/remove_all.cc: Likewise.
1095         * testsuite/27_io/filesystem/operations/rename.cc: Likewise.
1096         * testsuite/27_io/filesystem/operations/resize_file.cc:
1097         Likewise.
1098         * testsuite/27_io/filesystem/operations/space.cc: Likewise.
1099         * testsuite/27_io/filesystem/operations/status.cc: Likewise.
1100         * testsuite/27_io/filesystem/operations/symlink_status.cc:
1101         Likewise.
1102         * testsuite/27_io/filesystem/operations/temp_directory_path.cc:
1103         Likewise.
1104         * testsuite/27_io/filesystem/operations/weakly_canonical.cc:
1105         Likewise.
1106         * testsuite/27_io/filesystem/path/append/path.cc: Likewise.
1107         * testsuite/27_io/filesystem/path/append/source.cc: Likewise.
1108         * testsuite/27_io/filesystem/path/assign/assign.cc: Likewise.
1109         * testsuite/27_io/filesystem/path/assign/copy.cc: Likewise.
1110         * testsuite/27_io/filesystem/path/compare/compare.cc: Likewise.
1111         * testsuite/27_io/filesystem/path/compare/lwg2936.cc: Likewise.
1112         * testsuite/27_io/filesystem/path/compare/path.cc: Likewise.
1113         * testsuite/27_io/filesystem/path/compare/strings.cc: Likewise.
1114         * testsuite/27_io/filesystem/path/concat/92853.cc: Likewise.
1115         * testsuite/27_io/filesystem/path/concat/94063.cc: Likewise.
1116         * testsuite/27_io/filesystem/path/concat/path.cc: Likewise.
1117         * testsuite/27_io/filesystem/path/concat/strings.cc: Likewise.
1118         * testsuite/27_io/filesystem/path/construct/80762.cc: Likewise.
1119         * testsuite/27_io/filesystem/path/construct/90281.cc: Likewise.
1120         * testsuite/27_io/filesystem/path/construct/90634.cc: Likewise.
1121         * testsuite/27_io/filesystem/path/construct/copy.cc: Likewise.
1122         * testsuite/27_io/filesystem/path/construct/default.cc:
1123         Likewise.
1124         * testsuite/27_io/filesystem/path/construct/format.cc: Likewise.
1125         * testsuite/27_io/filesystem/path/construct/locale.cc: Likewise.
1126         * testsuite/27_io/filesystem/path/construct/range.cc: Likewise.
1127         * testsuite/27_io/filesystem/path/construct/string_view.cc:
1128         Likewise.
1129         * testsuite/27_io/filesystem/path/decompose/extension.cc:
1130         Likewise.
1131         * testsuite/27_io/filesystem/path/decompose/filename.cc:
1132         Likewise.
1133         * testsuite/27_io/filesystem/path/decompose/parent_path.cc:
1134         Likewise.
1135         * testsuite/27_io/filesystem/path/decompose/relative_path.cc:
1136         Likewise.
1137         * testsuite/27_io/filesystem/path/decompose/root_directory.cc:
1138         Likewise.
1139         * testsuite/27_io/filesystem/path/decompose/root_name.cc:
1140         Likewise.
1141         * testsuite/27_io/filesystem/path/decompose/root_path.cc:
1142         Likewise.
1143         * testsuite/27_io/filesystem/path/decompose/stem.cc: Likewise.
1144         * testsuite/27_io/filesystem/path/factory/u8path-char8_t.cc:
1145         Likewise.
1146         * testsuite/27_io/filesystem/path/factory/u8path.cc: Likewise.
1147         * testsuite/27_io/filesystem/path/generation/normal.cc:
1148         Likewise.
1149         * testsuite/27_io/filesystem/path/generation/normal2.cc:
1150         Likewise.
1151         * testsuite/27_io/filesystem/path/generation/proximate.cc:
1152         Likewise.
1153         * testsuite/27_io/filesystem/path/generation/relative.cc:
1154         Likewise.
1155         * testsuite/27_io/filesystem/path/generic/94242.cc: Likewise.
1156         * testsuite/27_io/filesystem/path/generic/generic_string.cc:
1157         Likewise.
1158         * testsuite/27_io/filesystem/path/generic/utf.cc: Likewise.
1159         * testsuite/27_io/filesystem/path/generic/wchar_t.cc: Likewise.
1160         * testsuite/27_io/filesystem/path/io/dr2989.cc: Likewise.
1161         * testsuite/27_io/filesystem/path/itr/components.cc: Likewise.
1162         * testsuite/27_io/filesystem/path/itr/traversal.cc: Likewise.
1163         * testsuite/27_io/filesystem/path/modifiers/clear.cc: Likewise.
1164         * testsuite/27_io/filesystem/path/modifiers/make_preferred.cc:
1165         Likewise.
1166         * testsuite/27_io/filesystem/path/modifiers/remove_filename.cc:
1167         Likewise.
1168         * testsuite/27_io/filesystem/path/modifiers/replace_extension.cc:
1169         Likewise.
1170         * testsuite/27_io/filesystem/path/modifiers/replace_filename.cc:
1171         Likewise.
1172         * testsuite/27_io/filesystem/path/modifiers/swap.cc: Likewise.
1173         * testsuite/27_io/filesystem/path/native/alloc.cc: Likewise.
1174         * testsuite/27_io/filesystem/path/native/string-char8_t.cc:
1175         Likewise.
1176         * testsuite/27_io/filesystem/path/native/string.cc: Likewise.
1177         * testsuite/27_io/filesystem/path/nonmember/append.cc: Likewise.
1178         * testsuite/27_io/filesystem/path/nonmember/cmp.cc: Likewise.
1179         * testsuite/27_io/filesystem/path/nonmember/hash_value.cc:
1180         Likewise.
1181         * testsuite/27_io/filesystem/path/query/empty.cc: Likewise.
1182         * testsuite/27_io/filesystem/path/query/empty_neg.cc:
1183         * testsuite/27_io/filesystem/path/query/has_extension.cc:
1184         Likewise.
1185         * testsuite/27_io/filesystem/path/query/has_filename.cc:
1186         Likewise.
1187         * testsuite/27_io/filesystem/path/query/has_parent_path.cc:
1188         Likewise.
1189         * testsuite/27_io/filesystem/path/query/has_relative_path.cc:
1190         Likewise.
1191         * testsuite/27_io/filesystem/path/query/has_root_directory.cc:
1192         Likewise.
1193         * testsuite/27_io/filesystem/path/query/has_root_name.cc:
1194         Likewise.
1195         * testsuite/27_io/filesystem/path/query/has_root_path.cc:
1196         Likewise.
1197         * testsuite/27_io/filesystem/path/query/has_stem.cc: Likewise.
1198         * testsuite/27_io/filesystem/path/query/is_absolute.cc:
1199         Likewise.
1200         * testsuite/27_io/filesystem/path/query/is_relative.cc:
1201         Likewise.
1202         * testsuite/experimental/filesystem/path/construct/string_view.cc:
1203         Likewise.
1204
1205 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
1206
1207         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc:
1208         Remove -std=gnu++17 from dg-options.
1209         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc:
1210         Likewise.
1211         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_fill_destroy.cc:
1212         Likewise.
1213         * testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc:
1214         Likewise.
1215         * testsuite/25_algorithms/pstl/alg_merge/merge.cc: Likewise.
1216         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc:
1217         Likewise.
1218         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc:
1219         Likewise.
1220         * testsuite/25_algorithms/pstl/alg_modifying_operations/fill.cc:
1221         Likewise.
1222         * testsuite/25_algorithms/pstl/alg_modifying_operations/generate.cc:
1223         Likewise.
1224         * testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc:
1225         Likewise.
1226         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc:
1227         Likewise.
1228         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc:
1229         Likewise.
1230         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc:
1231         Likewise.
1232         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove_copy.cc:
1233         Likewise.
1234         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace.cc:
1235         Likewise.
1236         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc:
1237         Likewise.
1238         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc:
1239         Likewise.
1240         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc:
1241         Likewise.
1242         * testsuite/25_algorithms/pstl/alg_modifying_operations/swap_ranges.cc:
1243         Likewise.
1244         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_binary.cc:
1245         Likewise.
1246         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_unary.cc:
1247         Likewise.
1248         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc:
1249         Likewise.
1250         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc:
1251         Likewise.
1252         * testsuite/25_algorithms/pstl/alg_nonmodifying/adjacent_find.cc:
1253         Likewise.
1254         * testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc:
1255         Likewise.
1256         * testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc:
1257         Likewise.
1258         * testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc:
1259         Likewise.
1260         * testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc:
1261         Likewise.
1262         * testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc:
1263         Likewise.
1264         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc:
1265         Likewise.
1266         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc:
1267         Likewise.
1268         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc:
1269         Likewise.
1270         * testsuite/25_algorithms/pstl/alg_nonmodifying/for_each.cc:
1271         Likewise.
1272         * testsuite/25_algorithms/pstl/alg_nonmodifying/mismatch.cc:
1273         Likewise.
1274         * testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc:
1275         Likewise.
1276         * testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc:
1277         Likewise.
1278         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc:
1279         Likewise.
1280         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc:
1281         Likewise.
1282         * testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc:
1283         Likewise.
1284         * testsuite/25_algorithms/pstl/alg_sorting/includes.cc:
1285         Likewise.
1286         * testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: Likewise.
1287         * testsuite/25_algorithms/pstl/alg_sorting/is_sorted.cc:
1288         Likewise.
1289         * testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc:
1290         Likewise.
1291         * testsuite/25_algorithms/pstl/alg_sorting/minmax_element.cc:
1292         Likewise.
1293         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc:
1294         Likewise.
1295         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc:
1296         Likewise.
1297         * testsuite/25_algorithms/pstl/alg_sorting/set.cc: Likewise.
1298         * testsuite/25_algorithms/pstl/alg_sorting/sort.cc: Likewise.
1299         * testsuite/25_algorithms/pstl/feature_test-2.cc: Likewise.
1300         * testsuite/25_algorithms/pstl/feature_test-3.cc: Likewise.
1301         * testsuite/25_algorithms/pstl/feature_test-4.cc: Likewise.
1302         * testsuite/25_algorithms/pstl/feature_test-5.cc: Likewise.
1303         * testsuite/25_algorithms/pstl/feature_test.cc: Likewise.
1304         * testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc:
1305         Likewise.
1306         * testsuite/26_numerics/pstl/numeric_ops/reduce.cc: Likewise.
1307         * testsuite/26_numerics/pstl/numeric_ops/scan.cc: Likewise.
1308         * testsuite/26_numerics/pstl/numeric_ops/transform_reduce.cc:
1309         Likewise.
1310         * testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc:
1311         Likewise.
1312
1313 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
1314
1315         * testsuite/20_util/scoped_allocator/69293_neg.cc: Add dg-error
1316         for additional errors in C++20.
1317         * testsuite/20_util/specialized_algorithms/memory_management_tools/destroy_neg.cc:
1318         Likewise.
1319         * testsuite/20_util/uses_allocator/69293_neg.cc: Likewise.
1320         * testsuite/27_io/filesystem/path/io/dr2989.cc: Likewise.
1321
1322 2021-05-10  Jonathan Wakely  <jwakely@redhat.com>
1323
1324         * testsuite/20_util/variant/compile.cc: Rename 'any' to avoid
1325         clash with std::any.
1326
1327 2021-05-07  Jonathan Wakely  <jwakely@redhat.com>
1328
1329         * include/std/istream (__rvalue_stream_extraction_t): Replace
1330         use of __rval_streamable.
1331         * include/std/ostream (__rvalue_stream_insertion_t): Likewise.
1332         (__rval_streamable): Remove.
1333         (_Require_derived_from_ios_base, __derived_from_ios_base): New
1334         helper for checking constraints.
1335         * testsuite/27_io/basic_istream/extractors_other/char/4.cc: Fix
1336         reference to the wrong subclause of the standard.
1337         * testsuite/27_io/basic_istream/extractors_other/wchar_t/4.cc:
1338         Likewise.
1339         * testsuite/27_io/basic_ostream/inserters_other/char/6.cc:
1340         Likewise.
1341         * testsuite/27_io/basic_ostream/inserters_other/wchar_t/6.cc:
1342         Likewise.
1343         * testsuite/27_io/basic_ostream/inserters_other/char/99692.cc:
1344         New test.
1345         * testsuite/27_io/filesystem/path/io/dr2989.cc: Adjust pruned
1346         errors.
1347
1348 2021-05-06  Jonathan Wakely  <jwakely@redhat.com>
1349
1350         * include/bits/stl_algobase.h (__copy_move, __copy_move_backward):
1351         Improve static_assert messages.
1352         * testsuite/25_algorithms/copy/58982.cc: Adjust expected output.
1353         * testsuite/25_algorithms/copy_n/58982.cc: Likewise.
1354
1355 2021-05-06  Patrick Palka  <ppalka@redhat.com>
1356
1357         * include/std/ranges (filter_view::_Iterator::base): Make the
1358         const& overload unconstrained and return a const reference as
1359         per LWG 3533.  Make unconditionally noexcept.
1360         (transform_view::_Iterator::base): Likewise.
1361         (elements_view::_Iterator::base): Likewise.
1362
1363 2021-05-06  Patrick Palka  <ppalka@redhat.com>
1364
1365         * include/bits/stl_iterator.h (move_iterator::base): Make the
1366         const& overload unconstrained and return a const reference as
1367         per LWG 3391.  Make unconditionally noexcept.
1368         (counted_iterator::base): Likewise.
1369         * testsuite/24_iterators/move_iterator/lwg3391.cc: New test.
1370         * testsuite/24_iterators/move_iterator/move_only.cc: Adjust
1371         has_member_base concept to decay-copy the result of base().
1372
1373 2021-05-06  Jonathan Wakely  <jwakely@redhat.com>
1374
1375         * include/std/type_traits (remove_cvref_t): Define in terms of
1376         remove_cvref.
1377         * testsuite/20_util/remove_cvref/value.cc: Check alias.
1378
1379 2021-05-06  Jonathan Wakely  <jwakely@redhat.com>
1380
1381         Revert:
1382         2021-05-05  Jonathan Wakely  <jwakely@redhat.com>
1383
1384         * include/std/charconv (__from_chars_alnum): Pass unsigned
1385         char to std::isdigit.
1386
1387 2021-05-05  Patrick Palka  <ppalka@redhat.com>
1388
1389         * include/bits/ranges_util.h (enable_borrowed_range<subrange>):
1390         Remove constraints on this partial specialization.
1391         * include/std/ranges (enable_borrowed_range<iota_view>):
1392         Likewise.
1393
1394 2021-05-05  Patrick Palka  <ppalka@redhat.com>
1395
1396         * include/std/ranges (transform_view::_Iterator::iter_swap):
1397         Remove as per LWG 3520.
1398         (join_view::_Iterator::iter_swap): Add indirectly_swappable
1399         constraint as per LWG 3517.
1400
1401 2021-05-05  Jonathan Wakely  <jwakely@redhat.com>
1402
1403         * testsuite/20_util/function_objects/invoke/3.cc: Check feature
1404         test macro.
1405         * testsuite/20_util/function_objects/invoke/version.cc: New test.
1406
1407 2021-05-05  Jonathan Wakely  <jwakely@redhat.com>
1408
1409         * include/std/charconv (__from_chars_alnum): Pass unsigned
1410         char to std::isdigit.
1411
1412 2021-05-05  Corentin Gay  <gay@adacore.com>
1413
1414         * acinclude.m4: Add VxWorks-specific case for the
1415         configuration of ctypes.
1416         * configure: Regenerate.
1417         * config/locale/vxworks/ctype_members.cc: Add VxWorks-specific
1418         version.
1419         * config/os/vxworks/ctype_base.h: Adjust for VxWorks7+.
1420         * config/os/vxworks/ctype_configure_char.cc: Likewise.
1421         * config/os/vxworks/ctype_inline.h: Likewise.
1422         * testsuite/28_regex/traits/char/isctype.cc: Defines
1423         NEWLINE_IN_CLASS_BLANK if the target is VxWorks.
1424         * testsuite/28_regex/traits/wchar_t/isctype.cc: Likewise.
1425
1426 2021-05-04  Jonathan Wakely  <jwakely@redhat.com>
1427
1428         * include/std/future (promise::set_value): Check for existence
1429         of shared state before dereferncing it.
1430         (promise::set_exception, promise::set_value_at_thread_exit)
1431         (promise::set_exception_at_thread_exit): Likewise.
1432         (promise<R&>::set_value, promise<R&>::set_exception)
1433         (promise<R&>::set_value_at_thread_exit)
1434         (promise<R&>::set_exception_at_thread_exit): Likewise.
1435         (promise<void>::set_value, promise<void>::set_exception)
1436         (promise<void>::set_value_at_thread_exit)
1437         (promise<void>::set_exception_at_thread_exit): Likewise.
1438         * testsuite/30_threads/promise/members/at_thread_exit2.cc:
1439         Remove unused variable.
1440
1441 2021-05-04  Jonathan Wakely  <jwakely@redhat.com>
1442
1443         * include/bits/basic_string.h (basic_string(const CharT*, const A&)):
1444         Do not do arithmetic on null pointer.
1445
1446 2021-05-04  Jonathan Wakely  <jwakely@redhat.com>
1447
1448         * include/ext/pb_ds/detail/cc_hash_table_map_/cc_ht_map_.hpp
1449         (find_key_pointer(key_const_reference, false_type))
1450         (find_key_pointer(key_const_reference, true_type)): Do not
1451         dereference null pointer.
1452
1453 2021-05-04  Jonathan Wakely  <jwakely@redhat.com>
1454
1455         * testsuite/20_util/from_chars/3.cc: Use unsigned type to avoid
1456         overflow.
1457         * testsuite/24_iterators/reverse_iterator/2.cc: Do not add
1458         non-zero value to null pointer.
1459         * testsuite/25_algorithms/copy_backward/move_iterators/69478.cc:
1460         Use past-the-end iterator for result.
1461         * testsuite/25_algorithms/move_backward/69478.cc: Likewise.
1462         * testsuite/25_algorithms/move_backward/93872.cc: Likewise.
1463
1464 2021-05-04  Jonathan Wakely  <jwakely@redhat.com>
1465
1466         PR libstdc++/100384
1467         * include/std/variant (__get_t): New alias template yielding the
1468         return type of std::get<N> on a variant.
1469         (__visit_result_t): New alias template yielding the result of
1470         std::visit.
1471         (__same_types): Move into namespace __detail::__variant.
1472         (__check_visitor_results): Likewise. Use __invoke_result_t and
1473         __get_t.
1474         (__check_visitor_result): Remove.
1475         (visit): Use __visit_result_t for return type.
1476         * testsuite/20_util/variant/100384.cc: New test.
1477
1478 2021-05-04  Jonathan Wakely  <jwakely@redhat.com>
1479
1480         * acinclude.m4 (GLIBCXX_ENABLE_INT128_FLOAT128): Remove
1481         checks for __int128 and rename to GLIBCXX_ENABLE_FLOAT128.
1482         * config.h.in: Regenerate.
1483         * configure: Regenerate.
1484         * configure.ac: Adjust to use GLIBCXX_ENABLE_FLOAT128.
1485         * include/bits/random.h (_Select_uint_least_t<s, 1>):
1486         Use __SIZEOF_INT128__ to decide whether to use __int128.
1487         * include/std/charconv (__to_chars_unsigned_type): Likewise.
1488
1489 2021-05-03  Gerald Pfeifer  <gerald@pfeifer.com>
1490
1491         * doc/xml/manual/ctype.xml: Move unix.org reference to https.
1492         * doc/html/manual/facets.html: Regenerate.
1493
1494 2021-04-30  Patrick Palka  <ppalka@redhat.com>
1495
1496         * include/std/ranges (__detail::__non_propating_cache): Define
1497         as per P2328.
1498         (join_view): Remove constraints on the value and reference types
1499         of the wrapped iterator type as per P2328.
1500         (join_view::_Iterator::_M_satisfy): Adjust as per P2328.
1501         (join_view::_Iterator::operator++): Likewise.
1502         (join_view::_M_inner): Use __non_propating_cache as per P2328.
1503         Remove now-redundant use of __maybe_present_t.
1504         * testsuite/std/ranges/adaptors/join.cc: Include <array>.
1505         (test10): New test.
1506
1507 2021-04-30  Jonathan Wakely  <jwakely@redhat.com>
1508
1509         * include/bits/basic_string.h (__cpp_lib_constexpr_string):
1510         Only define for C++17 and later.
1511         * include/std/version (__cpp_lib_semaphore): Fix condition
1512         to match the one in <semaphore>.
1513
1514 2021-04-30  Jonathan Wakely  <jwakely@redhat.com>
1515
1516         * acinclude.m4 (GLIBCXX_CHECK_INT64_T): Delete.
1517         * config.h.in: Regenerate.
1518         * configure: Regenerate.
1519         * configure.ac: Do not use GLIBCXX_CHECK_INT64_T.
1520         * include/bits/postypes.h: Remove include of <stdint.h> and
1521         definition/undefinition of the __STDC_LIMIT_MACROS and
1522         __STDC_CONSTANT_MACROS macros.
1523         (streamoff): Use __INT64_TYPE__ if defined.
1524
1525 2021-04-30  Patrick Palka  <ppalka@redhat.com>
1526
1527         * include/std/ranges (split_view::_InnerIter::operator++):
1528         Depend on _Base instead of _Vp directly, as per LWG 3532.
1529
1530 2021-04-30  Patrick Palka  <ppalka@redhat.com>
1531
1532         * include/bits/ranges_util.h (subrange::subrange): Avoid
1533         list-initialization in delegating constructor.
1534         * include/std/ranges (single_view): Replace implicit guide
1535         with explicit deduction guide that decays its argument.
1536         (_Single::operator()): Avoid CTAD when constructing the
1537         single_view object.
1538         (_Iota::operator()): Avoid list-initialization.
1539         (__detail::__can_filter_view, _Filter::operator()): Likewise.
1540         (__detail::__can_transform_view, _Transform::operator()): Likewise.
1541         (take_view::begin): Likewise.
1542         (__detail::__can_take_view, _Take::operator()): Likewise.
1543         (__detail::__can_take_while_view, _TakeWhile::operator()): Likewise.
1544         (__detail::__can_drop_view, _Drop::operator()): Likewise.
1545         (__detail::__can_drop_while_view, _DropWhile::operator()): Likewise.
1546         (split_view::split_view): Use views::single when initializing
1547         _M_pattern.
1548         (__detail::__can_split_view, _Split::operator()): Avoid
1549         list-initialization.
1550         (_Counted::operator()): Likewise.
1551         * testsuite/std/ranges/p2367.cc: New test.
1552
1553 2021-04-30  Jonathan Wakely  <jwakely@redhat.com>
1554
1555         PR libstdc++/60497
1556         * include/bits/basic_ios.tcc (basic_ios::copyfmt): use
1557         std::addressof.
1558         * include/bits/basic_string.tcc (basic_string::swap)
1559         (basic_string::assign): Likewise.
1560         * include/bits/deque.tcc (deque::operator=(const deque&)):
1561         Likewise.
1562         * include/bits/stl_tree.h (_Rb_tree::operator=(const * _Rb_tree&)):
1563         Likewise.
1564         * include/bits/vector.tcc (vector::operator=(const vector&)):
1565         Likewise.
1566
1567 2021-04-30  Jonathan Wakely  <jwakely@redhat.com>
1568
1569         * include/std/istream (operator>>(Istream&&, x&)): Simplify, as
1570         per LWG 1203.
1571         * include/std/ostream (operator<<(Ostream&&, const x&)):
1572         Likewise.
1573         * testsuite/27_io/basic_istream/extractors_character/char/lwg2499_neg.cc:
1574         Adjust dg-error pattern.
1575         * testsuite/27_io/basic_istream/extractors_character/wchar_t/lwg2499_neg.cc:
1576         Likewise.
1577         * testsuite/27_io/basic_istream/extractors_other/char/4.cc: Define
1578         is_extractable trait to replace std::__is_extractable. Make it
1579         work with rvalue streams as well as lvalues, to replace f() and
1580         g() helper functions.
1581         * testsuite/27_io/basic_istream/extractors_other/wchar_t/4.cc:
1582         Likewise.
1583         * testsuite/27_io/basic_ostream/inserters_other/char/6.cc:
1584         Define is_insertable trait to replace std::__is_insertable. Make
1585         it work with rvalue streams as well as lvalues, to replace f()
1586         and g() helper functions.
1587         * testsuite/27_io/basic_ostream/inserters_other/wchar_t/6.cc:
1588         Likewise.
1589         * testsuite/27_io/filesystem/path/io/dr2989.cc: Prune additional
1590         errors from new constraints.
1591         * testsuite/27_io/rvalue_streams-2.cc: Remove PR 80675 checks,
1592         which are no longer expected to compile.
1593         * testsuite/27_io/rvalue_streams.cc: Adjust existing test.
1594         Verify LWG 1203 changes.
1595
1596 2021-04-30  Jonathan Wakely  <jwakely@redhat.com>
1597
1598         PR libstdc++/100285
1599         * include/experimental/socket (__basic_socket_impl::set_option)
1600         (__basic_socket_impl::get_option) [!_GLIBCXX_HAVE_SYS_SOCKET_H]:
1601         Just set error code.
1602         * testsuite/experimental/net/socket/socket_base.cc: CHeck
1603         for <sys/socket.h> not <socket.h>.
1604
1605 2021-04-30  Jonathan Wakely  <jwakely@redhat.com>
1606
1607         PR libstdc++/100180
1608         PR libstdc++/100286
1609         PR libstdc++/100351
1610         * testsuite/experimental/net/internet/address/v4/comparisons.cc:
1611         Use new effective-target keyword.
1612         * testsuite/experimental/net/internet/address/v4/cons.cc:
1613         Likewise.
1614         * testsuite/experimental/net/internet/address/v4/creation.cc:
1615         Likewise.
1616         * testsuite/experimental/net/internet/address/v4/members.cc:
1617         Likewise.
1618         * testsuite/experimental/net/internet/address/v6/members.cc:
1619         Likewise.
1620         * testsuite/experimental/net/internet/resolver/base.cc:
1621         Likewise.
1622         * testsuite/experimental/net/internet/resolver/ops/lookup.cc:
1623         Likewise.
1624         * testsuite/experimental/net/internet/resolver/ops/reverse.cc:
1625         Likewise.
1626         * testsuite/experimental/net/internet/socket/opt.cc:
1627         Likewise.
1628         * testsuite/experimental/net/internet/tcp.cc:
1629         Likewise.
1630         * testsuite/experimental/net/internet/udp.cc:
1631         Likewise.
1632         * testsuite/lib/libstdc++.exp (check_effective_target_net_ts_ip):
1633         New proc to check net_ts_ip et.
1634
1635 2021-04-28  Jonathan Wakely  <jwakely@redhat.com>
1636
1637         PR libstdc++/97930
1638         * testsuite/20_util/pair/requirements/structural.cc: New test.
1639
1640 2021-04-28  Jonathan Wakely  <jwakely@redhat.com>
1641
1642         * include/bits/stl_pair.h (pair) [__cplusplus > 202002]: Add
1643         new definitions for constructors and assignment operators using
1644         concepts for constraints.
1645         * testsuite/20_util/pair/cons/99957.cc: Disable for C++20 and
1646         later.
1647         * testsuite/20_util/pair/cons/explicit_construct.cc: Adjust
1648         expected error messages to also match C++20 errors.
1649
1650 2021-04-28  Jonathan Wakely  <jwakely@redhat.com>
1651
1652         PR libstdc++/99957
1653         * include/bits/stl_pair.h (_PCC::_MoveCopyPair, _PCC::_CopyMovePair):
1654         Combine and replace with ...
1655         (_PCC::_DeprConsPair): New SFINAE helper function.
1656         (pair): Merge preprocessor blocks so that all C++03 members
1657         are defined together at the end.
1658         (pair::pair(const _T1&, _U2&&), pair::pair(_U1&&, const _T2&)):
1659         Replace _T1 and _T2 parameters with __null_ptr_constant and
1660         adjust constraints.
1661         * testsuite/20_util/pair/40925.cc: Use nullptr instead of 0.
1662         * testsuite/20_util/pair/cons/explicit_construct.cc: Likewise.
1663         * testsuite/20_util/pair/cons/99957.cc: New test.
1664
1665 2021-04-28  Jonathan Wakely  <jwakely@redhat.com>
1666
1667         * include/bits/basic_string.h (__cpp_lib_constexpr_string): Define.
1668         * include/std/version (__cpp_lib_constexpr_string): Define.
1669         * testsuite/21_strings/char_traits/requirements/constexpr_functions_c++17.cc:
1670         Check for __cpp_lib_constexpr_string.
1671         * testsuite/21_strings/char_traits/requirements/constexpr_functions_c++20.cc:
1672         Likewise.
1673         * testsuite/21_strings/char_traits/requirements/version.cc: New test.
1674
1675 2021-04-28  Jonathan Wakely  <jwakely@redhat.com>
1676
1677         * doc/Makefile.am (stamp-pdf-doxygen): Improve comment about
1678         dealing with errors. Use '@' to prevent shell command being
1679         echoed.
1680         * doc/Makefile.in: Regenerate.
1681
1682 2021-04-28  Jonathan Wakely  <jwakely@redhat.com>
1683
1684         PR libstdc++/100298
1685         * include/bits/std_thread.h (thread::hardware_concurrency): Add
1686         missing noexcept to inline definition for non-gthreads targets.
1687
1688 2021-04-28  Patrick Palka  <ppalka@redhat.com>
1689
1690         PR libstdc++/100187
1691         PR libstdc++/100237
1692         PR libstdc++/100249
1693         PR libstdc++/100287
1694         * include/bits/ranges_algo.h (__search_n_fn::operator()): Give
1695         the __value_comp lambda an explicit bool return type.
1696         (__is_permutation_fn::operator()): Give the __proj_scan local
1697         variable auto&& return type.  Give the __comp_scan lambda an
1698         explicit bool return type.
1699         (__remove_fn::operator()): Give the __pred lambda an explicit
1700         bool return type.
1701         (__partition_fn::operator()): Don't std::move __first twice
1702         when returning an empty subrange.
1703         (__min_fn::operator()): Don't std::move __comp.
1704         (__max_fn::operator()): Likewise.
1705         (__minmax_fn::operator()): Likewise.
1706
1707 2021-04-27  Patrick Palka  <ppalka@redhat.com>
1708
1709         PR libstdc++/100290
1710         * include/std/ranges (join_view::_Iterator::operator++): Correct
1711         the return type of the lambda to avoid returning a copy of
1712         _M_parent->_M_inner.
1713         * testsuite/std/ranges/adaptors/join.cc (test10): New test.
1714
1715 2021-04-27  Jakub Jelinek  <jakub@redhat.com>
1716
1717         Revert:
1718         2021-04-22  Jakub Jelinek  <jakub@redhat.com>
1719
1720         PR target/100182
1721         * testsuite/29_atomics/atomic_float/1.cc: Add dg-xfail-run-if for
1722         ia32.
1723         * testsuite/29_atomics/atomic_float/wait_notify.cc: Add dg-skip-if for
1724         ia32.
1725
1726 2021-04-27  Jonathan Wakely  <jwakely@redhat.com>
1727
1728         * include/experimental/internet (address_v6::bytes_type): Adjust
1729         formatting.
1730         (basic_endpoint): Define _M_is_v6() to put all checks for
1731         AF_INET6 in one place.
1732         (basic_endpoint::resize): Simplify.
1733         (operator==(const tcp&, const tcp&)): Add constexpr and noexcept.
1734         (operator!=(const tcp&, const tcp&)): Likewise.
1735         (operator==(const udp&, const udp&)): Likewise.
1736         (operator!=(const udp&, const udp&)): Likewise.
1737         * testsuite/experimental/net/internet/tcp.cc: New test.
1738         * testsuite/experimental/net/internet/udp.cc: New test.
1739
1740 2021-04-27  Jonathan Wakely  <jwakely@redhat.com>
1741
1742         PR libstdc++/100286
1743         * include/experimental/internet (resolver_errc, resolver_category())
1744         (make_error_code, make_error_condition): Define unconditionally,
1745         only make enumerators and use of gai_strerror depend on the
1746         availability of <netdb.h>.
1747         (address_v4::to_string): Use correct constant for string length.
1748         (address_v4::to_string, address_v6::to_string): Define
1749         unconditionally, throw if unsupported.
1750         (make_address_v4, make_address_v6): Define unconditionally.
1751         Return an error if unsupported.
1752         (tcp, udp, v6_only, unicast::hops, multicast::*): Define
1753         conditionally,
1754         * testsuite/experimental/net/internet/socket/opt.cc: Check for
1755         <netinet/in.h> and <netinet/tcp.h> before using types from
1756         namespace net::ip.
1757
1758 2021-04-27  Jonathan Wakely  <jwakely@redhat.com>
1759
1760         PR libstdc++/100285
1761         * include/experimental/internet (resolver_base::flags):
1762         Define overloaded operators as hidden friends.
1763         * include/experimental/socket (socket_base::message_flags):
1764         Likewise.
1765
1766 2021-04-26  Jonathan Wakely  <jwakely@redhat.com>
1767
1768         * include/experimental/internet (tcp::no_delay, v6_only)
1769         (unicast::hops, multicast::hops, multicast::enable_loopback):
1770         Change access of base class and static data members. Add
1771         using-declaration for __socket_crtp::operator=(_Tp).
1772         (multicast::__mcastopt): New type.
1773         (multicast::join_group, multicast::leave_group): Derive from
1774         __mcastopt for common implementation.
1775         * include/experimental/socket: Add comment.
1776         * testsuite/experimental/net/internet/socket/opt.cc: New test.
1777         * testsuite/experimental/net/socket/socket_base.cc: Check for
1778         protected constructor/destructor of socket_base. Check for
1779         explicit constructors of socket option classes.
1780
1781 2021-04-26  Jonathan Wakely  <jwakely@redhat.com>
1782
1783         * include/experimental/bits/net.h (__socket_base): Add
1784         bool template parameter to allow BooleanSocketOption and
1785         IntegerSocketOption to have different __socket_base<int>
1786         base classes.
1787         (__socket_base<bool>): Adjust base class.
1788         (__socket_base<int>): Add partial specialization.
1789         (__socket_crtp::operator=(_Tp)): Add noexcept-specifier.
1790         * include/experimental/socket (socket_base::broadcast)
1791         (socket_base::debug, socket_base::do_not_route)
1792         (socket_base::keep_alive, socket_base::linger)
1793         (socket_base::out_of_band_inline)
1794         (socket_base::receive_buffer_size)
1795         (socket_base::receive_low_watermark)
1796         (socket_base::reuse_address, socket_base::send_buffer_size)
1797         (socket_base::send_low_watermark): Add using-declaration for
1798         __socket_crtp::operator=(_Tp).
1799         * testsuite/experimental/net/socket/socket_base.cc: Check
1800         properties of socket option types.
1801
1802 2021-04-26  Jonathan Wakely  <jwakely@redhat.com>
1803
1804         * include/experimental/internet (resolver_base::flags): Remove
1805         enumerators. Initialize constants directly with desired values.
1806         Make all operators constexpr and noexcept.
1807         * testsuite/experimental/net/internet/resolver/base.cc: Use
1808         __gnu_test::test_bitmask_values for bitmask type. Check
1809         construction and destruction is protected.
1810
1811 2021-04-26  Jonathan Wakely  <jwakely@redhat.com>
1812
1813         * include/bits/semaphore_base.h: Include <exception> and <errno.h>.
1814
1815 2021-04-26  Jonathan Wakely  <jwakely@redhat.com>
1816
1817         PR libstdc++/100259
1818         * include/experimental/internet (net::ip::make_error_code)
1819         (net::ip::make_error_condition, net::ip::make_network_v4)
1820         (net::ip::operator==(const udp&, const udp&)): Add 'inline'.
1821
1822 2021-04-24  David Edelsohn  <dje.gcc@gmail.com>
1823
1824         * testsuite/lib/dg-options.exp (atomic_link_flags): New.
1825         (add_options_for_libatomic): Use atomic_link_flags.
1826
1827 2021-04-23  Jonathan Wakely  <jwakely@redhat.com>
1828
1829         PR libstdc++/100180
1830         * include/experimental/io_context (io_context): Define
1831         dummy_pollfd type so that most member functions still compile
1832         without <poll.h> and struct pollfd.
1833
1834 2021-04-23  Jonathan Wakely  <jwakely@redhat.com>
1835
1836         * include/experimental/io_context (io_context::async_wait): Add
1837         comment.
1838         * include/experimental/socket (basic_socket::async_connect):
1839         Cast wait_type constant to int.
1840         (basic_datagram_socket::async_receive): Likewise.
1841         (basic_datagram_socket::async_receive_from): Likewise.
1842         (basic_datagram_socket::async_send): Likewise.
1843         (basic_datagram_socket::async_send_to): Likewise.
1844         (basic_stream_socket::async_receive): Likewise.
1845         (basic_stream_socket::async_send): Likewise. Use io_context
1846         parameter directly, instead of via an executor.
1847         (basic_socket_acceptor::async_accept): Likewise.
1848
1849 2021-04-23  Jonathan Wakely  <jwakely@redhat.com>
1850
1851         * include/experimental/socket (socket_base::shutdown_type):
1852         (socket_base::wait_type, socket_base::message_flags):
1853         Remove enumerators. Initialize constants directly with desired
1854         values.
1855         (socket_base::message_flags): Make all operators constexpr and
1856         noexcept.
1857         * testsuite/util/testsuite_common_types.h (test_bitmask_values):
1858         New test utility.
1859         * testsuite/experimental/net/socket/socket_base.cc: New test.
1860
1861 2021-04-22  David Edelsohn  <dje.gcc@gmail.com>
1862
1863         * config/os/aix/atomicity.h: Delete.
1864
1865 2021-04-22  Jonathan Wakely  <jwakely@redhat.com>
1866
1867         * include/bits/atomic_timed_wait.h (__cond_wait_until_impl):
1868         Handle system_clock as well as steady_clock.
1869         * testsuite/30_threads/semaphore/try_acquire_for.cc: Re-enable.
1870         * testsuite/30_threads/semaphore/try_acquire_until.cc:
1871         Re-enable.
1872
1873 2021-04-22  Jonathan Wakely  <jwakely@redhat.com>
1874
1875         * testsuite/30_threads/semaphore/try_acquire_posix.cc: Add
1876         options for libatomic.
1877
1878 2021-04-22  Jonathan Wakely  <jwakely@redhat.com>
1879
1880         * config/os/gnu-linux/os_defines.h: Fix type in comment.
1881
1882 2021-04-22  Jonathan Wakely  <jwakely@redhat.com>
1883
1884         PR libstdc++/99006
1885         * include/bits/shared_ptr.h (allocate_shared): Assert that _Tp
1886         is not an array type.
1887         * include/bits/shared_ptr_base.h (__allocate_shared): Likewise.
1888         * testsuite/20_util/shared_ptr/creation/99006.cc: New test.
1889
1890 2021-04-22  Thomas Rodgers  <rodgert@twrodgers.com>
1891
1892         * include/bits/atomic_wait.h: Always notify waiters in the
1893         case of 'bare' address notification.
1894
1895 2021-04-22  Jakub Jelinek  <jakub@redhat.com>
1896
1897         PR target/100182
1898         * testsuite/29_atomics/atomic_float/1.cc: Add dg-xfail-run-if for
1899         ia32.
1900         * testsuite/29_atomics/atomic_float/wait_notify.cc: Add dg-skip-if for
1901         ia32.
1902
1903 2021-04-22  Jonathan Wakely  <jwakely@redhat.com>
1904
1905         PR libstdc++/100179
1906         * include/bits/semaphore_base.h: Remove #error.
1907         * include/std/semaphore: Do not define anything unless one of
1908         the implementations is available.
1909
1910 2021-04-21  Thomas Rodgers  <rodgert@twrodgers.com>
1911
1912         * include/bits/semaphore_base.h: Always reload __old in
1913         __atomic_semaphore::_S_do_try_acquire().
1914         * testsuite/30_threads/stop_token/stop_callback/destroy.cc:
1915         re-enable testcase.
1916
1917 2021-04-21  Philippe Blain  <levraiphilippeblain@gmail.com>
1918             Jonathan Wakely  <jwakely@redhat.com>
1919
1920         PR libstdc++/99453
1921         * python/Makefile.am: Install libstdc++*-gdb.py more robustly.
1922         * python/Makefile.in: Regenerate.
1923
1924 2021-04-21  Thomas Rodgers  <rodgert@twrodgers.com>
1925
1926         * include/bits/semaphore_base.h: Add missing _M_try_acquire()
1927         member to __platform_wait.
1928
1929 2021-04-21  Jonathan Wakely  <jwakely@redhat.com>
1930
1931         * include/std/latch: Replace tab characters in license text.
1932         * include/std/semaphore: Likewise.
1933
1934 2021-04-21  Jakub Jelinek  <jakub@redhat.com>
1935
1936         PR libstdc++/100164
1937         * acinclude.m4: For POSIX semaphores AC_DEFINE HAVE_POSIX_SEMAPHORE
1938         rather than _GLIBCXX_HAVE_POSIX_SEMAPHORE.
1939         * configure: Regenerated.
1940         * config.h.in: Regenerated.
1941
1942 2021-04-20  Jonathan Wakely  <jwakely@redhat.com>
1943
1944         * testsuite/30_threads/semaphore/try_acquire_for.cc: Disable
1945         test for targets not using futexes for semaphores.
1946         * testsuite/30_threads/semaphore/try_acquire_until.cc: Likewise.
1947         * testsuite/30_threads/stop_token/stop_callback/destroy.cc:
1948         Disable for all targets.
1949
1950 2021-04-20  Thomas Rodgers  <trodgers@redhat.com>
1951
1952         * include/Makefile.am: Add new <bits/this_thread_sleep.h> header.
1953         * include/Makefile.in: Regenerate.
1954         * include/bits/this_thread_sleep.h: New file.
1955         * include/bits/atomic_base.h: Adjust all calls
1956         to __atomic_wait/__atomic_notify for new call signatures.
1957         * include/bits/atomic_timed_wait.h: Extensive rewrite.
1958         * include/bits/atomic_wait.h: Likewise.
1959         * include/bits/semaphore_base.h: Adjust all calls
1960         to __atomic_wait/__atomic_notify for new call signatures.
1961         * include/std/atomic: Likewise.
1962         * include/std/barrier: Likewise.
1963         * include/std/latch: Likewise.
1964         * include/std/semaphore: Likewise.
1965         * include/std/thread (this_thread::sleep_for)
1966         (this_thread::sleep_until): Move to new header.
1967         * testsuite/29_atomics/atomic/wait_notify/bool.cc: Simplify
1968         test.
1969         * testsuite/29_atomics/atomic/wait_notify/generic.cc: Likewise.
1970         * testsuite/29_atomics/atomic/wait_notify/pointers.cc: Likewise.
1971         * testsuite/29_atomics/atomic_flag/wait_notify/1.cc: Likewise.
1972         * testsuite/29_atomics/atomic_float/wait_notify.cc: Likewise.
1973         * testsuite/29_atomics/atomic_integral/wait_notify.cc: Likewise.
1974         * testsuite/29_atomics/atomic_ref/wait_notify.cc: Likewise.
1975
1976 2021-04-20  Patrick Palka  <ppalka@redhat.com>
1977
1978         PR libstdc++/95983
1979         * include/bits/stl_iterator.h (__detail::__move_iter_cat):
1980         Define.
1981         (move_iterator): Derive from the above in C++20 in order to
1982         conditionally define iterator_category as per P2259.
1983         (move_iterator::__base_cat): No longer used, so remove.
1984         (move_iterator::iterator_category): Remove in C++20.
1985         (__detail::__common_iter_use_postfix_proxy): Define.
1986         (common_iterator::_Proxy): Rename to ...
1987         (common_iterator:__arrow_proxy): ... this.
1988         (common_iterator::__postfix_proxy): Define as per P2259.
1989         (common_iterator::operator->): Adjust.
1990         (common_iterator::operator++): Adjust as per P2259.
1991         (iterator_traits<common_iterator>::_S_iter_cat): Define.
1992         (iterator_traits<common_iterator>::iterator_category): Change as
1993         per P2259.
1994         (__detail::__counted_iter_value_type): Define.
1995         (__detail::__counted_iter_concept): Define.
1996         (__detail::__counted_iter_cat): Define.
1997         (counted_iterator): Derive from the above three classes in order
1998         to conditionally define value_type, iterator_concept and
1999         iterator category respectively as per P2259.
2000         (counted_iterator::operator->): Define as per P2259.
2001         (incrementable_traits<counted_iterator>): Remove as per P2259.
2002         (iterator_traits<counted_iterator>): Adjust as per P2259.
2003         * include/std/ranges (__detail::__iota_view_iter_cat): Define.
2004         (iota_view::_Iterator): Derive from the above in order to
2005         conditionally define iterator_category as per P2259.
2006         (iota_view::_S_iter_cat): Rename to ...
2007         (iota_view::_S_iter_concept): ... this.
2008         (iota_view::iterator_concept): Use it to apply LWG 3291 changes.
2009         (iota_view::iterator_category): Remove.
2010         (__detail::__filter_view_iter_cat): Define.
2011         (filter_view::_Iterator): Derive from the above in order to
2012         conditionally define iterator_category as per P2259.
2013         (filter_view::_Iterator): Move to struct __filter_view_iter_cat.
2014         (filter_view::_Iterator::iterator_category): Remove.
2015         (transform_view::_Base): Define.
2016         (transform_view::__iter_cat): Define.
2017         (transform_view::_Iterator): Derive from the above in order to
2018         conditionally define iterator_category as per P2259.
2019         (transform_view::_Iterator::_Base): Just alias
2020         transform_view::_Base.
2021         (transform_view::_Iterator::_S_iter_cat): Move to struct
2022         transform_view::__iter_cat.
2023         (transform_view::_Iterator::iterator_category): Remove.
2024         (transform_view::_Sentinel::_Base): Just alias
2025         transform_view::_Base.
2026         (join_view::_Base): Define.
2027         (join_view::_Outer_iter): Define.
2028         (join_view::_Inner_iter): Define.
2029         (join_view::_S_ref_is_glvalue): Define.
2030         (join_view::__iter_cat): Define.
2031         (join_view::_Iterator): Derive from it in order to conditionally
2032         define iterator_category as per P2259.
2033         (join_view::_Iterator::_Base): Just alias join_view::_Base.
2034         (join_view::_Iterator::_S_ref_is_glvalue): Just alias
2035         join_view::_S_ref_is_glvalue.
2036         (join_view::_Iterator::_S_iter_cat): Move to struct
2037         transform_view::__iter_cat.
2038         (join_view::_Iterator::_Outer_iter): Just alias
2039         join_view::_Outer_iter.
2040         (join_view::_Iterator::_Inner_iter): Just alias
2041         join_view::_Inner_iter.
2042         (join_view::_Iterator::iterator_category): Remove.
2043         (join_view::_Sentinel::_Base): Just alias join_view::_Base.
2044         (__detail::__split_view_outer_iter_cat): Define.
2045         (__detail::__split_view_inner_iter_cat): Define.
2046         (split_view::_Base): Define.
2047         (split_view::_Outer_iter): Derive from __split_view_outer_iter_cat
2048         in order to conditionally define iterator_category as per P2259.
2049         (split_view::_Outer_iter::iterator_category): Remove.
2050         (split_view::_Inner_iter): Derive from __split_view_inner_iter_cat
2051         in order to conditionally define iterator_category as per P2259.
2052         (split_view::_Inner_iter::_S_iter_cat): Move to
2053         __split_view_inner_iter_cat.
2054         (split_view::_Inner_iter::iterator_category): Remove.
2055         (elements_view::_Base): Define.
2056         (elements_view::__iter_cat): Define.
2057         (elements_view::_Iterator): Derive from the above in order to
2058         conditionall define iterator_category as per P2259.
2059         (elements_view::_Iterator::_Base): Just alias
2060         elements_view::_Base.
2061         (elements_view::_Iterator::_S_iter_concept)
2062         (elements_view::_Iterator::iterator_concept): Define as per
2063         P2259.
2064         (elements_view::_Iterator::iterator_category): Remove.
2065         (elements_view::_Sentinel::_Base): Just alias
2066         elements_view::_Base.
2067         * testsuite/24_iterators/headers/iterator/synopsis_c++20.cc:
2068         Adjust constraints on iterator_traits<counted_iterator>.
2069         * testsuite/std/ranges/p2259.cc: New test.
2070
2071 2021-04-20  Jonathan Wakely  <jwakely@redhat.com>
2072
2073         PR libstdc++/100146
2074         * include/std/charconv (__cpp_lib_to_chars): Define
2075         conditionally.
2076         * include/std/version (__cpp_lib_to_chars): Likewise..
2077         * testsuite/20_util/from_chars/4.cc: Only check feature test
2078         macro, not _GLIBCXX_HAVE_USELOCALE.
2079         * testsuite/20_util/from_chars/5.cc: Likewise.
2080         * testsuite/20_util/from_chars/6.cc: Likewise.
2081         * testsuite/20_util/to_chars/long_double.cc: Likewise.
2082
2083 2021-04-20  Jakub Jelinek  <jakub@redhat.com>
2084
2085         * testsuite/util/testsuite_abi.cc (compare_symbols): If any symbol
2086         versions with _IEEE128_ substring are found, set ieee_version_found
2087         to true.  Ignore missing symbols with _IEEE128_ in version name if
2088         !ieee_version_found.  Use i->first as version_name instead of
2089         i->second.version_name if the latter is empty.
2090         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
2091
2092 2021-04-19  H.J. Lu  <hjl.tools@gmail.com>
2093
2094         * config/abi/post/x86_64-linux-gnu/x32/baseline_symbols.txt:
2095         Updated.
2096
2097 2021-04-17  Jakub Jelinek  <jakub@redhat.com>
2098
2099         * config/abi/post/powerpc-linux-gnu/baseline_symbols.txt: Update.
2100         * config/abi/post/powerpc64-linux-gnu/32/baseline_symbols.txt: Update.
2101
2102 2021-04-17  Jakub Jelinek  <jakub@redhat.com>
2103
2104         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
2105         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
2106         * config/abi/post/i386-linux-gnu/baseline_symbols.txt: Update.
2107         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
2108         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
2109         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
2110
2111 2021-04-15  Jonathan Wakely  <jwakely@redhat.com>
2112
2113         * testsuite/lib/dg-options.exp (add_options_for_libatomic): Also
2114         add libatomic options for 32-bit sparc*-*-linux-gnu.
2115
2116 2021-04-15  Jonathan Wakely  <jwakely@redhat.com>
2117
2118         PR libstdc++/96657
2119         * libsupc++/Makefile.am: Add atomicity.cc here.
2120         * src/c++98/Makefile.am: Remove it from here.
2121         * libsupc++/Makefile.in: Regenerate.
2122         * src/c++98/Makefile.in: Regenerate.
2123         * testsuite/18_support/exception_ptr/96657.cc: New test.
2124
2125 2021-04-13  Jonathan Wakely  <jwakely@redhat.com>
2126
2127         PR libstdc++/100060
2128         * include/std/bit: Only include <ext/numeric_traits.h> for
2129         hosted build, use <limits> otherwise.
2130
2131 2021-04-13  Jonathan Wakely  <jwakely@redhat.com>
2132
2133         * doc/xml/manual/backwards_compatibility.xml: Remove porting
2134         notes for libg++ and libstdc++-v2, and bibliography.
2135         * doc/html/*: Regenerated.
2136
2137 2021-04-12  Jonathan Wakely  <jwakely@redhat.com>
2138
2139         PR libstdc++/100044
2140         * include/bits/ranges_util.h (__detail::__iterator_sentinel_pair):
2141         Remove helper concept.
2142         (subrange(_Pr), subrange(Pr, __make_unsigned_like<...>)): Remove
2143         deduction guides, as per LWG 3404.
2144         * testsuite/std/ranges/subrange/lwg3282_neg.cc: Check that class
2145         template argument deduction fails.
2146
2147 2021-04-12  Jonathan Wakely  <jwakely@redhat.com>
2148
2149         * testsuite/26_numerics/random/linear_congruential_engine/requirements/non_uint_neg.cc:
2150         Adjust expected error for C++20 mode.
2151         * testsuite/tr1/5_numerical_facilities/random/linear_congruential/requirements/non_uint_neg.cc:
2152         Likewise.
2153
2154 2021-04-12  Jonathan Wakely  <jwakely@redhat.com>
2155
2156         PR libstdc++/99995
2157         * testsuite/17_intro/headers/c++1998/49745.cc: Include all
2158         standard headers and XFAIL for effective-target c++20.
2159
2160 2021-04-09  François Dumont  <fdumont@gcc.gnu.org>
2161
2162         PR libstdc++/99402
2163         * include/debug/helper_functions.h (__can_advance(_InputIterator,
2164         const std::pair<_Diff, _Distance_precision>&, int)): New.
2165         (__can_advance(const _Safe_iterator<>&,
2166         const std::pair<_Diff, _Distance_precision>&, int)): New.
2167         * include/debug/macros.h (__glibcxx_check_can_increment_dist): New,
2168         use latter.
2169         (__glibcxx_check_can_increment_range): Adapt to use latter.
2170         (__glibcxx_check_can_decrement_range): Likewise.
2171         * include/debug/safe_iterator.h
2172         (_Safe_iterator<>::_M_can_advance(const std::pair<_Diff, _Distance_precision>&,
2173         int)): New.
2174         (__can_advance(const _Safe_iterator<>&,
2175         const std::pair<_Diff, _Distance_precision>&, int)): New.
2176         * include/debug/safe_iterator.tcc
2177         (_Safe_iterator<>::_M_can_advance(const std::pair<_Diff, _Distance_precision>&,
2178         int)): New.
2179         (_Safe_iterator<>::_M_valid_range(const _Safe_iterator<>&,
2180         std::pair<difference_type, _Distance_precision>&, bool)): Adapt for
2181         __dp_sign_max_size.
2182         (__copy_move_a): Adapt to use __glibcxx_check_can_increment_dist.
2183         (__copy_move_backward_a): Likewise.
2184         (__equal_aux): Likewise.
2185         * include/debug/stl_iterator.h (__can_advance(const std::reverse_iterator<>&,
2186         const std::pair<_Diff, _Distance_precision>&, int)): New.
2187         (__can_advance(const std::move_iterator<>&,
2188         const std::pair<_Diff, _Distance_precision>&, int)): New.
2189         * testsuite/25_algorithms/copy/debug/99402.cc: New test.
2190
2191 2021-04-09  Jonathan Wakely  <jwakely@redhat.com>
2192
2193         PR libstdc++/99985
2194         * include/bits/hashtable.h (_Hashtable::_S_nothrow_move()): Fix
2195         to be a valid constexpr function in C++11.
2196         * testsuite/23_containers/unordered_set/cons/99985.cc: New test.
2197
2198 2021-04-09  Jonathan Wakely  <jwakely@redhat.com>
2199
2200         * include/bits/fs_fwd.h: Fix doxygen group command.
2201         * include/bits/streambuf_iterator.h: Likewise.
2202         * include/bits/uses_allocator_args.h: Likewise.
2203         * include/std/memory: Likewise.
2204         * include/tr1/complex: Likewise.
2205
2206 2021-04-08  Jonathan Wakely  <jwakely@redhat.com>
2207
2208         * include/bits/basic_string.h: Tweak doxygen comment.
2209
2210 2021-04-08  Patrick Palka  <ppalka@redhat.com>
2211
2212         * include/std/ranges (__detail::find): Define.
2213         (split_view::_OuterIter::operator++): Apply proposed resolution
2214         of LWG 3505.
2215         * testsuite/std/ranges/adaptors/split.cc (test10): New test.
2216
2217 2021-04-08  Patrick Palka  <ppalka@redhat.com>
2218
2219         * include/std/ranges (__detail::find_if): Simplify.
2220         (__detail::find_if_not): Likewise.
2221         (__detail::min): Remove.
2222         (__detail::mismatch): Simplify.
2223         (take_view::size): Use std::min instead of __detail::min.
2224
2225 2021-04-08  Patrick Palka  <ppalka@redhat.com>
2226
2227         * include/std/ranges (__detail::__returnable_element): New
2228         concept.
2229         (elements_view): Use this concept in its constraints.  Add
2230         missing private access specifier.
2231         (elements_view::_S_get_element): Define as per LWG 3502.
2232         (elements_view::operator*, elements_view::operator[]): Use
2233         _S_get_element.
2234         (elements_view::operator++): Remove unnecessary constraint
2235         as per LWG 3492.
2236         * testsuite/std/ranges/adaptors/elements.cc (test05): New test.
2237
2238 2021-04-08  Jonathan Wakely  <jwakely@redhat.com>
2239
2240         * doc/Makefile.am (stamp-pdf-doxygen): Also grep for
2241         out-of-memory error in log file.
2242         * doc/Makefile.in: Regenerate.
2243
2244 2021-04-08  Jonathan Wakely  <jwakely@redhat.com>
2245
2246         * configure: Regenerate.
2247
2248 2021-04-08  Jonathan Wakely  <jwakely@redhat.com>
2249
2250         * include/bits/random.h: Fix doxygen group commands.
2251         * include/bits/regex_constants.h: Likewise.
2252         * include/tr1/random.h: Likewise.
2253
2254 2021-04-08  Jonathan Wakely  <jwakely@redhat.com>
2255
2256         * include/bits/hashtable.h (_Hashtable::_S_nothrow_move()):
2257         New function to determine noexcept-specifier for move
2258         constructors.
2259         (_Hashtable): Use _S_nothrow_move() on move constructors.
2260         * testsuite/23_containers/unordered_map/cons/noexcept_move_construct.cc:
2261         Correct static assertion message.
2262         * testsuite/23_containers/unordered_multimap/cons/noexcept_move_construct.cc:
2263         Likewise.
2264         * testsuite/23_containers/unordered_multiset/cons/noexcept_move_construct.cc:
2265         Likewise.
2266         * testsuite/23_containers/unordered_set/cons/noexcept_move_construct.cc:
2267         Likewise.
2268
2269 2021-04-08  Patrick Palka  <ppalka@redhat.com>
2270
2271         PR libstdc++/98384
2272         * testsuite/20_util/to_chars/long_double.cc: Don't run the test
2273         on targets without a large long double.  XFAIL the execution on
2274         targets with a non-conforming printf.
2275
2276 2021-04-08  Patrick Palka  <ppalka@redhat.com>
2277
2278         PR libstdc++/99433
2279         * include/std/ranges (__adaptor::__maybe_refwrap): Remove.
2280         (__adaptor::__adaptor_invocable): New concept.
2281         (__adaptor::__adaptor_partial_app_viable): New concept.
2282         (__adaptor::_RangeAdaptorClosure): Rewrite, turning it into a
2283         non-template base class.
2284         (__adaptor::_RangeAdaptor): Rewrite, turning it into a CRTP base
2285         class template.
2286         (__adaptor::_Partial): New class template that represents
2287         partial application of a range adaptor non-closure.
2288         (__adaptor::__pipe_invocable): New concept.
2289         (__adaptor::_Pipe): New class template.
2290         (__detail::__can_ref_view): New concept.
2291         (__detail::__can_subrange): New concept.
2292         (all): Replace the lambda here with ...
2293         (_All): ... this functor.  Add appropriate constraints.
2294         (__detail::__can_filter_view): New concept.
2295         (filter, _Filter): As in all/_All.
2296         (__detail::__can_transform): New concept.
2297         (transform, _Transform): As in all/_All.
2298         (__detail::__can_take_view): New concept.
2299         (take, _Take): As in all/_All.
2300         (__detail::__can_take_while_view): New concept.
2301         (take_while, _TakeWhile): As in all/_All.
2302         (__detail::__can_drop_view): New concept.
2303         (drop, _Drop): As in all/_All.
2304         (__detail::__can_drop_while_view): New concept.
2305         (drop_while, _DropWhile): As in all/_All.
2306         (__detail::__can_join_view): New concept.
2307         (join, _Join): As in all/_All.
2308         (__detail::__can_split_view): New concept.
2309         (split, _Split): As in all/_All.  Rename template parameter
2310         _Fp to _Pattern.
2311         (__detail::__already_common): New concept.
2312         (__detail::__can_common_view): New concept.
2313         (common, _Common): As in all/_All.
2314         (__detail::__can_reverse_view): New concept.
2315         (reverse, _Reverse): As in all/_All.
2316         (__detail::__can_elements_view): New concept.
2317         (elements, _Elements): As in all/_All.
2318         (keys, values): Adjust.
2319         * testsuite/std/ranges/adaptors/99433.cc: New test.
2320         * testsuite/std/ranges/adaptors/all.cc: No longer expect that
2321         adding empty range adaptor closure objects to a pipeline doesn't
2322         increase the size of the pipeline.
2323         (test05): New test.
2324         * testsuite/std/ranges/adaptors/common.cc (test03): New test.
2325         * testsuite/std/ranges/adaptors/drop.cc (test09): New test.
2326         * testsuite/std/ranges/adaptors/drop_while.cc (test04): New test.
2327         * testsuite/std/ranges/adaptors/elements.cc (test04): New test.
2328         * testsuite/std/ranges/adaptors/filter.cc (test06): New test.
2329         * testsuite/std/ranges/adaptors/join.cc (test09): New test.
2330         * testsuite/std/ranges/adaptors/p2281.cc: New test.
2331         * testsuite/std/ranges/adaptors/reverse.cc (test07): New test.
2332         * testsuite/std/ranges/adaptors/split.cc (test01, test04):
2333         Adjust.
2334         (test09): New test.
2335         * testsuite/std/ranges/adaptors/split_neg.cc (test01): Adjust
2336         expected error message.
2337         (test02): Likewise.  Extend test.
2338         * testsuite/std/ranges/adaptors/take.cc (test06): New test.
2339         * testsuite/std/ranges/adaptors/take_while.cc (test05): New test.
2340         * testsuite/std/ranges/adaptors/transform.cc (test07, test08):
2341         New test.
2342
2343 2021-04-08  Jonathan Wakely  <jwakely@redhat.com>
2344
2345         * include/std/string_view: Adjust Doxygen @file comment.
2346
2347 2021-04-08  Jonathan Wakely  <jwakely@redhat.com>
2348
2349         * include/std/type_traits (is_scoped_enum<T>): Constrain partial
2350         specialization to not match incomplete enum types. Use a
2351         requires-expression instead of instantiating is_convertible.
2352         (is_scoped_enum<const T>): Add as workaround for PR c++/99968.
2353         * testsuite/20_util/is_scoped_enum/value.cc: Check with
2354         incomplete types and opaque-enum-declarations.
2355
2356 2021-04-07  Jonathan Wakely  <jwakely@redhat.com>
2357
2358         PR libstdc++/99805
2359         * src/c++17/fs_path.cc (path::_M_split_cmpts): Do not call
2360         non-const member on _M_pathname, to avoid copy-on-write.
2361         * testsuite/27_io/filesystem/path/decompose/parent_path.cc:
2362         Check construction from strings that might be shared.
2363
2364 2021-04-06  Jonathan Wakely  <jwakely@redhat.com>
2365
2366         * include/bits/move.h (forward, move, move_if_noexcept)
2367         (addressof): Add _GLIBCXX_NODISCARD.
2368         * include/bits/ranges_cmp.h (identity::operator()): Add
2369         nodiscard attribute.
2370         * include/c_global/cstddef (to_integer): Likewise.
2371         * include/std/bit (bit_cast): Likewise.
2372         * include/std/utility (as_const, to_underlying): Likewise.
2373
2374 2021-04-06  Jonathan Wakely  <jwakely@redhat.com>
2375
2376         * include/bits/move.h (forward): Change static_assert message
2377         to be unambiguous about what must be true.
2378         * testsuite/20_util/forward/c_neg.cc: Adjust dg-error.
2379         * testsuite/20_util/forward/f_neg.cc: Likewise.
2380
2381 2021-04-06  Jonathan Wakely  <jwakely@redhat.com>
2382
2383         * include/bits/alloc_traits.h: Use markdown for code font.
2384         * include/bits/basic_string.h: Fix @param names.
2385         * include/bits/max_size_type.h: Remove period after @file.
2386         * include/bits/regex.h: Fix duplicate @retval names, and rename.
2387         * include/ext/pb_ds/detail/priority_queue_base_dispatch.hpp: Add
2388         group open to match existing group close.
2389         * include/ext/pb_ds/priority_queue.hpp: Add blank line before group
2390         open.
2391
2392 2021-04-06  Jonathan Wakely  <jwakely@redhat.com>
2393
2394         * include/bits/atomic_base.h: Fix doxygen group close.
2395         * include/bits/basic_ios.h: Likewise.
2396         * include/bits/forward_list.h: Likewise.
2397         * include/bits/fs_dir.h: Likewise.
2398         * include/bits/fs_ops.h: Likewise.
2399         * include/bits/fs_path.h: Likewise.
2400         * include/bits/functional_hash.h: Likewise.
2401         * include/bits/gslice.h: Likewise.
2402         * include/bits/gslice_array.h: Likewise.
2403         * include/bits/hashtable_policy.h: Likewise.
2404         * include/bits/indirect_array.h: Likewise.
2405         * include/bits/locale_classes.h: Likewise.
2406         * include/bits/locale_facets.h: Likewise.
2407         * include/bits/locale_facets_nonio.h: Likewise.
2408         * include/bits/mask_array.h: Likewise.
2409         * include/bits/refwrap.h: Likewise.
2410         * include/bits/regex.h: Likewise.
2411         * include/bits/regex_automaton.h: Likewise.
2412         * include/bits/regex_compiler.h: Likewise.
2413         * include/bits/regex_constants.h: Likewise.
2414         * include/bits/regex_error.h: Likewise.
2415         * include/bits/regex_executor.h: Likewise.
2416         * include/bits/regex_scanner.h: Likewise.
2417         * include/bits/shared_ptr.h: Likewise.
2418         * include/bits/shared_ptr_atomic.h: Likewise.
2419         * include/bits/shared_ptr_base.h: Likewise.
2420         * include/bits/slice_array.h: Likewise.
2421         * include/bits/specfun.h: Likewise.
2422         * include/bits/std_function.h: Likewise.
2423         * include/bits/std_mutex.h: Likewise.
2424         * include/bits/stl_deque.h: Likewise.
2425         * include/bits/stl_iterator.h: Likewise.
2426         * include/bits/stl_iterator_base_types.h: Likewise.
2427         * include/bits/stl_map.h: Likewise.
2428         * include/bits/stl_multimap.h: Likewise.
2429         * include/bits/stl_multiset.h: Likewise.
2430         * include/bits/stl_numeric.h: Likewise.
2431         * include/bits/stl_pair.h: Likewise.
2432         * include/bits/stl_set.h: Likewise.
2433         * include/bits/stl_uninitialized.h: Likewise.
2434         * include/bits/stream_iterator.h: Likewise.
2435         * include/bits/streambuf_iterator.h: Likewise.
2436         * include/bits/unique_ptr.h: Likewise.
2437         * include/bits/unordered_map.h: Likewise.
2438         * include/bits/unordered_set.h: Likewise.
2439         * include/decimal/decimal: Likewise.
2440         * include/experimental/any: Likewise.
2441         * include/experimental/array: Likewise.
2442         * include/experimental/bits/fs_dir.h: Likewise.
2443         * include/experimental/bits/fs_fwd.h: Likewise.
2444         * include/experimental/bits/fs_ops.h: Likewise.
2445         * include/experimental/bits/fs_path.h: Likewise.
2446         * include/experimental/buffer: Likewise.
2447         * include/experimental/internet: Likewise.
2448         * include/experimental/optional: Likewise.
2449         * include/experimental/propagate_const: Likewise.
2450         * include/experimental/socket: Likewise.
2451         * include/ext/pb_ds/assoc_container.hpp: Likewise.
2452         * include/ext/pb_ds/detail/priority_queue_base_dispatch.hpp:
2453         Likewise.
2454         * include/ext/pb_ds/detail/tree_policy/node_metadata_selector.hpp: Likewise.
2455         * include/ext/pb_ds/detail/trie_policy/node_metadata_selector.hpp: Likewise.
2456         * include/ext/pb_ds/detail/types_traits.hpp: Likewise.
2457         * include/ext/pb_ds/exception.hpp: Likewise.
2458         * include/ext/pb_ds/priority_queue.hpp: Likewise.
2459         * include/ext/pb_ds/tag_and_trait.hpp: Likewise.
2460         * include/ext/random: Likewise.
2461         * include/std/any: Likewise.
2462         * include/std/atomic: Likewise.
2463         * include/std/bitset: Likewise.
2464         * include/std/chrono: Likewise.
2465         * include/std/complex: Likewise.
2466         * include/std/condition_variable: Likewise.
2467         * include/std/fstream: Likewise.
2468         * include/std/future: Likewise.
2469         * include/std/iostream: Likewise.
2470         * include/std/istream: Likewise.
2471         * include/std/mutex: Likewise.
2472         * include/std/numeric: Likewise.
2473         * include/std/ostream: Likewise.
2474         * include/std/ratio: Likewise.
2475         * include/std/shared_mutex: Likewise.
2476         * include/std/stdexcept: Likewise.
2477         * include/std/streambuf: Likewise.
2478         * include/std/system_error: Likewise.
2479         * include/std/thread: Likewise.
2480         * include/std/valarray: Likewise.
2481         * include/std/variant: Likewise.
2482         * include/tr1/cmath: Likewise.
2483         * include/tr1/regex: Likewise.
2484         * include/tr2/dynamic_bitset: Likewise.
2485         * libsupc++/atomic_lockfree_defines.h: Likewise.
2486         * libsupc++/exception: Likewise.
2487         * libsupc++/exception.h: Likewise.
2488         * libsupc++/exception_ptr.h: Likewise.
2489         * libsupc++/nested_exception.h: Likewise.
2490
2491 2021-03-31  Alexandre Oliva  <oliva@adacore.com>
2492
2493         * testsuite/30_threads/future/members/poll.cc: Use faster
2494         after-ready call in the calibration loop.
2495
2496 2021-03-29  Jonathan Wakely  <jwakely@redhat.com>
2497
2498         * doc/xml/manual/status_cxx2017.xml: Adjust link for PSTL.
2499         * doc/html/manual/status.html: Regenerate.
2500
2501 2021-03-28  François Dumont  <fdumont@gcc.gnu.org>
2502
2503         * include/debug/forward_list
2504         (forward_list(forward_list&&, const allocator_type&)): Add noexcept qualification.
2505         * include/debug/list (list(list&&, const allocator_type&)): Likewise and add
2506         call to safe container allocator aware move constructor.
2507         * include/debug/vector (vector(vector&&, const allocator_type&)):
2508         Fix noexcept qualification.
2509         * testsuite/23_containers/forward_list/cons/noexcept_move_construct.cc:
2510         Add allocator-extended move constructor noexceot qualification check.
2511         * testsuite/23_containers/list/cons/noexcept_move_construct.cc: Likewise.
2512
2513 2021-03-26  Jonathan Wakely  <jwakely@redhat.com>
2514
2515         * src/c++11/random.cc (USE_LCG): Define when a pseudo-random
2516         fallback is needed.
2517         [USE_LCG] (bad_seed, construct_lcg_at, destroy_lcg_at, __lcg):
2518         New helper functions and callback.
2519         (random_device::_M_init): Add 'prng' and 'all' enumerators.
2520         Replace switch with fallthrough with a series of 'if' statements.
2521         [USE_LCG]: Construct an lcg_type engine and use __lcg when cpuid
2522         checks fail.
2523         (random_device::_M_init_pretr1) [USE_MT19937]: Accept "prng"
2524         token.
2525         (random_device::_M_getval): Check for callback unconditionally
2526         and always pass _M_file pointer.
2527         * testsuite/26_numerics/random/random_device/85494.cc: Remove
2528         effective-target check. Use new random_device_available helper.
2529         * testsuite/26_numerics/random/random_device/94087.cc: Likewise.
2530         * testsuite/26_numerics/random/random_device/cons/default-cow.cc:
2531         Remove effective-target check.
2532         * testsuite/26_numerics/random/random_device/cons/default.cc:
2533         Likewise.
2534         * testsuite/26_numerics/random/random_device/cons/token.cc: Use
2535         new random_device_available helper. Test "prng" token.
2536         * testsuite/util/testsuite_random.h (random_device_available):
2537         New helper function.
2538
2539 2021-03-25  François Dumont  <fdumont@gcc.gnu.org>
2540
2541         * include/debug/string
2542         (basic_string(const basic_string&, const _Alloc&)): Define even if !_GLIBCXX_USE_CXX11_ABI.
2543         (basic_string(basic_string&&, const _Alloc&)): Likewise and add noexcept qualification.
2544         (basic_string<>::erase): Adapt to take __const_iterator.
2545         (basic_string(const _CharT*, const _Allocator&)): Remove assign call.
2546         (basic_string<>::insert(const_iterator, _InputIte, _InputIte)): Try to
2547         remove iterator debug layer even if !_GLIBCXX_USE_CXX11_ABI.
2548         [_GLIBCXX_USE_CHAR8_T] (__gnu_debug::u8string): New.
2549         (__gnu_debug::u16string, __gnu_debug::u32string): New.
2550         (std::hash<__gnu_debug::basic_string<>>): New partial specialization.
2551         (std::__is_fast_hash<__gnu_debug::basic_string<>>): Likewise.
2552         * testsuite/util/exception/safety.h
2553         (erase_base<__gnu_debug::basic_string<>>): New partial specialization.
2554         (insert_base<__gnu_debug::basic_string<>>): Likewise.
2555         * testsuite/util/testsuite_container_traits.h (traits<__gnu_debug::basic_string<>>):
2556         New partial specialization.
2557         * testsuite/21_strings/basic_string/hash/debug.cc: New test.
2558         * testsuite/21_strings/basic_string/requirements/citerators.cc:
2559         Add test on __gnu_debug::string.
2560         * testsuite/21_strings/basic_string/requirements/dr438/constructor.cc: Likewise.
2561         * testsuite/21_strings/basic_string/requirements/exception/basic.cc: Likewise.
2562         * testsuite/21_strings/basic_string/requirements/exception/generation_prohibited.cc:
2563         Likewise.
2564         * testsuite/21_strings/basic_string/requirements/exception/propagation_consistent.cc:
2565         Likewise.
2566         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char/1.cc:
2567         Likewise.
2568         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char16_t/1.cc:
2569         Likewise.
2570         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char32_t/1.cc:
2571         Likewise.
2572         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char8_t/1.cc:
2573         Likewise.
2574         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/wchar_t/1.cc:
2575         Likewise.
2576         * testsuite/21_strings/basic_string/requirements/typedefs.cc: Likewise.
2577
2578 2021-03-25  Jakub Jelinek  <jakub@redhat.com>
2579
2580         PR c++/99672
2581         * testsuite/18_support/source_location/consteval.cc (main): Adjust
2582         expected column numbers.
2583         * testsuite/18_support/source_location/1.cc (main): Likewise.
2584
2585 2021-03-25  Jonathan Wakely  <jwakely@redhat.com>
2586
2587         * libsupc++/new_opa.cc [!_GLIBCXX_HOSTED]: Declare malloc.
2588
2589 2021-03-25  Jonathan Wakely  <jwakely@redhat.com>
2590
2591         * testsuite/util/exception/safety.h (setup_base::generate):
2592         Support seeding random engine.
2593         (erase_point, erase_range): Adjust range of random numbers to
2594         ensure dereferenceable iterators are used where required.
2595         (generation_prohibited::run): Do not try to erase from empty
2596         containers.
2597         * testsuite/util/testsuite_containergen.h (test_containers):
2598         Support seeding random engine.
2599
2600 2021-03-23  Jonathan Wakely  <jwakely@redhat.com>
2601
2602         * testsuite/std/ranges/adaptors/reverse.cc: Replace duplicated
2603         line with a check that uses the const being/end overloads.
2604
2605 2021-03-23  Moritz Sichert  <sichert@in.tum.de>
2606
2607         * include/std/ranges (reverse_view::begin, reverse_view::end):
2608         Qualify make_reverse_iterator calls to avoid ADL.
2609         * testsuite/std/ranges/adaptors/reverse.cc: Test that
2610         views::reverse works when make_reverse_iterator is defined
2611         in an associated namespace.
2612
2613 2021-03-23  Jonathan Wakely  <jwakely@redhat.com>
2614
2615         * include/bits/c++config (_GLIBCXX_LONG_DOUBLE_ALT128_COMPAT):
2616         Do not define when compiling with Clang.
2617
2618 2021-03-22  Jonathan Wakely  <jwakely@redhat.com>
2619
2620         * include/std/string_view (basic_string_view(Range&&)): Define new
2621         constructor and deduction guide.
2622         * testsuite/21_strings/basic_string_view/cons/char/range_c++20.cc: New test.
2623         * testsuite/21_strings/basic_string_view/cons/wchar_t/range_c++20.cc: New test.
2624
2625 2021-03-22  Jonathan Wakely  <jwakely@redhat.com>
2626
2627         * include/bits/range_access.h (begin(T (&)[N]), end(T (&)[N])):
2628         Add missing 'noexcept' as per LWG 2280.
2629         (rbegin(T (&)[N]), rend(T (&)[N]), rbegin(initializer_list<T>))
2630         (rend(initializer_list<T>)): Add 'noexcept' as per LWG 3537.
2631         * testsuite/24_iterators/range_access/range_access.cc: Check for
2632         expected noexcept specifiers. Check result types of generic
2633         std::begin and std::end overloads.
2634         * testsuite/24_iterators/range_access/range_access_cpp14.cc:
2635         Check for expected noexcept specifiers.
2636         * testsuite/24_iterators/range_access/range_access_cpp17.cc:
2637         Likewise.
2638
2639 2021-03-19  Jonathan Wakely  <jwakely@redhat.com>
2640
2641         * include/std/type_traits (is_scoped_enum): Define.
2642         * include/std/version (__cpp_lib_is_scoped_enum): Define.
2643         * testsuite/20_util/is_scoped_enum/value.cc: New test.
2644         * testsuite/20_util/is_scoped_enum/version.cc: New test.
2645
2646 2021-03-16  Jonathan Wakely  <jwakely@redhat.com>
2647
2648         PR libstdc++/99341
2649         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Remove
2650         std::once_flag symbols.
2651         * config/abi/post/ia64-linux-gnu/baseline_symbols.txt: Likewise.
2652         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Likewise.
2653         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt:
2654         Likewise.
2655         * config/abi/pre/gnu.ver: Likewise.
2656         * src/c++11/mutex.cc [_GLIBCXX_HAVE_LINUX_FUTEX]
2657         (struct __once_flag_compat): Remove.
2658         (_ZNSt9once_flag11_M_activateEv): Remove.
2659         (_ZNSt9once_flag9_M_finishEb): Remove.
2660
2661 2021-03-16  Jonathan Wakely  <jwakely@redhat.com>
2662
2663         PR libstdc++/99341
2664         * include/std/mutex [_GLIBCXX_HAVE_LINUX_FUTEX] (once_flag):
2665         Revert to pthread_once_t implementation.
2666         [_GLIBCXX_HAVE_LINUX_FUTEX] (call_once): Likewise.
2667         * src/c++11/mutex.cc [_GLIBCXX_HAVE_LINUX_FUTEX]
2668         (struct __once_flag_compat): New type matching the reverted
2669         implementation of once_flag using futexes.
2670         (once_flag::_M_activate): Remove, replace with ...
2671         (_ZNSt9once_flag11_M_activateEv): ... alias symbol.
2672         (once_flag::_M_finish): Remove, replace with ...
2673         (_ZNSt9once_flag9_M_finishEb): ... alias symbol.
2674         * testsuite/30_threads/call_once/66146.cc: Removed.
2675
2676 2021-03-15  Iain Sandoe  <iain@sandoe.co.uk>
2677
2678         * testsuite/17_intro/names.cc: Exclude j from the list
2679         of test symbols for Darwin.
2680
2681 2021-03-15  Iain Sandoe  <iain@sandoe.co.uk>
2682
2683         * config/os/bsd/darwin/ppc-extra.ver: Add matching for
2684         to_chars and from_chars for long double.
2685
2686 2021-03-15  Patrick Palka  <ppalka@redhat.com>
2687
2688         * include/bits/max_size_type.h (__max_size_type::operator _Tp):
2689         Fix formatting.
2690         (__max_size_type::operator++): Define.
2691         (__max_size_type::operator--): Likewise.
2692         (__max_size_type::operator<=>): Conditionally define (in place
2693         of the other comparison operators).
2694         (__max_diff_type::operator _Tp): Fix formatting.
2695         (__max_diff_type::operator++): Define.
2696         (__max_diff_type::operator--): Likewise.
2697         (__max_diff_type::operator<=>): Conditionally define (in place
2698         of the other comparison operators).
2699         * testsuite/std/ranges/iota/max_size_type.cc (test01): Test
2700         these operator overloads.
2701
2702 2021-03-15  Caroline Tice  <cmtice@google.com>
2703
2704         PR libstdc++/99172
2705         * src/Makefile.am (AM_CXXFLAGS_PRE, AM_CXXFLAGS): Add
2706         AM_CXXFLAGS_PRE with the old definition of AM_CXXFLAGS; make
2707         AM_CXXFLAGS to be AM_CXXFLAGS_PRE with '-fvtable-verify=std'
2708         filtered out.
2709         * src/Makefile.in: Regenerate.
2710
2711 2021-03-11  Patrick Palka  <ppalka@redhat.com>
2712
2713         * src/c++17/floating_to_chars.cc: Simplify the file as if
2714         __SIZEOF_INT128__ is always defined.
2715         [!defined __SIZEOF_INT128__]: Include "uint128_t.h".  Define
2716         a base-10 to_chars overload for the uint128_t class type.
2717         * src/c++17/uint128_t.h: New file.
2718         * testsuite/20_util/to_chars/long_double.cc: No longer expect an
2719         execution FAIL on targets that have a large long double type
2720         but lack __int128.
2721
2722 2021-03-11  Patrick Palka  <ppalka@redhat.com>
2723
2724         * src/c++17/ryu/LOCAL_PATCHES: Update.
2725         * src/c++17/ryu/d2s_intrinsics.h: Don't define uint128_t.
2726         * src/c++17/ryu/generic_128.h: Likewise.
2727         * src/c++17/ryu/ryu_generic_128.h (struct floating_decimal_128):
2728         Use uint128_t instead of __uint128_t.
2729         (generic_binary_to_decimal): Likewise.
2730
2731 2021-03-11  Patrick Palka  <ppalka@redhat.com>
2732
2733         * src/c++17/ryu/LOCAL_PATCHES: New file.
2734
2735 2021-03-11  Patrick Palka  <ppalka@redhat.com>
2736
2737         * src/c++17/floating_to_chars.cc (uint128_t): New conditionally
2738         defined alias of unsigned __int128.
2739         (floating_type_traits_binary128::mantissa_t): Use uint128_t
2740         instead of unsigned __int128.
2741         (floating_type_traits<long double>::mantissa_t)
2742         [LONG_DOUBLE_KIND == LDK_IBM128]: Likewise.
2743         (get_ieee_repr): Likewise.  Make casts from uint_t to mantissa_t
2744         and uint32_t explicit.  Simplify the extraction of mantissa,
2745         exponent and sign bit.
2746
2747 2021-03-11  Jonathan Wakely  <jwakely@redhat.com>
2748
2749         * include/std/barrier (barrier::arrival_token): New move-only
2750         class that encapsulates the underlying token value.
2751
2752 2021-03-11  Jonathan Wakely  <jwakely@redhat.com>
2753
2754         * python/libstdcxx/v6/printers.py (find_type): Use tag attribute
2755         instead of unqualified() method.
2756
2757 2021-03-11  Jonathan Wakely  <jwakely@redhat.com>
2758
2759         PR libstdc++/99537
2760         * include/std/stop_token (_Stop_state_t::_M_release_ownership):
2761         Use acq_rel memory ordering.
2762
2763 2021-03-11  Jonathan Wakely  <jwakely@redhat.com>
2764
2765         PR libstdc++/99533
2766         * src/c++17/fs_dir.cc (recursive_directory_iterator): Use new
2767         helper function to check for permission denied errors.
2768         * src/filesystem/dir.cc (recursive_directory_iterator):
2769         Likewise.
2770         * src/filesystem/dir-common.h (is_permission_denied_error): New
2771         helper function.
2772
2773 2021-03-11  Jonathan Wakely  <jwakely@redhat.com>
2774
2775         PR libstdc++/99536
2776         * include/bits/random.h (normal_distribution): Use
2777         default-initializer for _M_saved and _M_saved_available.
2778
2779 2021-03-10  John David Anglin  <danglin@gcc.gnu.org>
2780
2781         * testsuite/29_atomics/atomic/wait_notify/bool.cc: Add options to
2782         link with libatomic.
2783         * testsuite/29_atomics/atomic/wait_notify/generic.cc: Likewise.
2784         * testsuite/29_atomics/atomic/wait_notify/pointers.cc: Likewise.
2785         * testsuite/29_atomics/atomic_flag/wait_notify/1.cc: Likewise.
2786         * testsuite/30_threads/barrier/arrive.cc: Likewise.
2787         * testsuite/30_threads/barrier/arrive_and_drop.cc: Likewise.
2788         * testsuite/30_threads/barrier/arrive_and_wait.cc: Likewise.
2789         * testsuite/30_threads/barrier/completion.cc: Likewise.
2790         * testsuite/30_threads/latch/3.cc: Likewise.
2791         * testsuite/30_threads/semaphore/try_acquire.cc: Likewise.
2792         * testsuite/30_threads/semaphore/try_acquire_for.cc: Likewise.
2793         * testsuite/30_threads/semaphore/try_acquire_until.cc: Likewise.
2794
2795 2021-03-10  Jonathan Wakely  <jwakely@redhat.com>
2796
2797         PR libstdc++/99413
2798         * include/bits/align.h: Include debug/assertions.h.
2799         * include/bits/codecvt.h: Include bits/c++config.h.
2800         * include/bits/enable_special_members.h: Likewise.
2801         * include/bits/erase_if.h: Likewise.
2802         * include/bits/functional_hash.h: Include <type_traits>.
2803         * include/bits/invoke.h: Include bits/move.h.
2804         * include/bits/ostream_insert.h: Include bits/exception_defines.h.
2805         * include/bits/parse_numbers.h: Include <type_traits>.
2806         * include/bits/predefined_ops.h: Include bits/c++config.h.
2807         * include/bits/range_access.h: Include bits/stl_iterator.h.
2808         * include/bits/stl_bvector.h: Do not include bits/stl_vector.h.
2809         * include/bits/stl_iterator.h: Include bits/stl_iterator_base_types.h.
2810         * include/bits/stl_uninitialized.h: Include bits/stl_algobase.h.
2811         * include/bits/uniform_int_dist.h: Include bits/concept_check.h.
2812         * include/bits/unique_lock.h: Include bits/std_mutex.h.
2813         * include/debug/assertions.h: Include bits/c++config.h.
2814
2815 2021-03-10  Jonathan Wakely  <jwakely@redhat.com>
2816
2817         * include/bits/ranges_cmp.h (__eq_builtin_ptr_cmp): Remove.
2818         (ranges::equal_to, ranges::not_equal_to): Do not constrain
2819         with __eq_builtin_ptr_cmp.
2820         (ranges::less, ranges::greater, ranges::less_equal)
2821         (ranges::greater_equal): Do not constrain with
2822         __less_builtin_ptr_cmp.
2823         * libsupc++/compare (compare_three_way): Do not constrain with
2824         __3way_builtin_ptr_cmp.
2825         * testsuite/18_support/comparisons/object/builtin-ptr-three-way.cc: Moved to...
2826         * testsuite/18_support/comparisons/object/lwg3530.cc: ...here.
2827         * testsuite/20_util/function_objects/range.cmp/lwg3530.cc: New test.
2828
2829 2021-03-10  Jonathan Wakely  <jwakely@redhat.com>
2830
2831         * testsuite/std/time/syn_c++20.cc: Enable synopsis checks for
2832         C++20 calendar types.
2833
2834 2021-03-06  Jakub Jelinek  <jakub@redhat.com>
2835
2836         PR libstdc++/99396
2837         * include/std/bit (__rotl, __rotr): Add optimized variants for power of
2838         two _Nd which the compiler can pattern match the rotates.
2839
2840 2021-03-04  Jonathan Wakely  <jwakely@redhat.com>
2841
2842         PR libstdc++/99382
2843         * testsuite/20_util/specialized_algorithms/uninitialized_default_n/sizes.cc:
2844         Make storage larger than required. Verify no write to the last
2845         element.
2846         * testsuite/20_util/specialized_algorithms/uninitialized_value_construct_n/sizes.cc:
2847         Likewise.
2848
2849 2021-03-03  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
2850
2851         * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
2852         * config/abi/post/i386-solaris/amd64/baseline_symbols.txt:
2853         Likewise.
2854         * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
2855         * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
2856         Likewise.
2857
2858 2021-03-03  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
2859
2860         * include/experimental/bits/simd.h: Replace reserved _X, _B by
2861         _Xp, _Bp.
2862         * include/experimental/bits/simd_builtin.h: Likewise.
2863         * include/experimental/bits/simd_x86.h: Likewise.
2864
2865 2021-02-27  Jonathan Wakely  <jwakely@redhat.com>
2866
2867         PR libstdc++/99301
2868         * include/std/chrono (year_month_day::_M_days_since_epoch()):
2869         Convert chrono::month and chrono::day to unsigned before
2870         converting to uint32_t.
2871
2872 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
2873
2874         * include/std/chrono (year_month_day::_S_from_days): Perform
2875         all calculations with type uint32_t.
2876
2877 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
2878
2879         * doc/xml/manual/abi.xml: Document versioning for GCC 11.
2880         * doc/html/manual/abi.html: Regenerate.
2881
2882 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
2883
2884         PR libstdc++/99270
2885         * testsuite/27_io/headers/cstdio/types_std.cc: Use pointer to
2886         FILE instead of FILE.
2887
2888 2021-02-25  Andreas Schwab  <schwab@suse.de>
2889
2890         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
2891         * config/abi/post/ia64-linux-gnu/baseline_symbols.txt: Update.
2892         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
2893         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
2894
2895 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
2896
2897         PR libstdc++/99265
2898         * include/std/chrono (year_month_day::_S_from_days): Cast long
2899         to int explicitly.
2900
2901 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
2902
2903         * include/std/utility (to_underlying): Define.
2904         * include/std/version (__cpp_lib_to_underlying): Define.
2905         * testsuite/20_util/to_underlying/1.cc: New test.
2906         * testsuite/20_util/to_underlying/version.cc: New test.
2907
2908 2021-02-24  Jonathan Wakely  <jwakely@redhat.com>
2909
2910         PR libstdc++/99261
2911         * src/c++17/floating_to_chars.cc (sprintf_ld): Add extra args
2912         before value to be printed.
2913
2914 2021-02-24  Patrick Palka  <ppalka@redhat.com>
2915
2916         * src/c++17/floating_to_chars.cc (__floating_to_chars_precision):
2917         Relax the condition that guards the printf code path to accept
2918         F128_type as well as long double.
2919
2920 2021-02-24  Cassio Neri  <cassio.neri@gmail.com>
2921
2922         * include/std/chrono (year_month_day_last:day): New
2923         implementation.
2924
2925 2021-02-24  Cassio Neri  <cassio.neri@gmail.com>
2926
2927         * include/std/chrono (year::is_leap): New implementation.
2928         * testsuite/std/time/year/2.cc: New test.
2929
2930 2021-02-24  Cassio Neri  <cassio.neri@gmail.com>
2931
2932         * include/std/chrono (year_month_day::_M_days_since_epoch):
2933         New implementation.
2934         * testsuite/std/time/year_month_day/4.cc: New test.
2935
2936 2021-02-24  Cassio Neri  <cassio.neri@gmail.com>
2937
2938         * include/std/chrono (year_month_day::_S_from_days): New
2939         implementation.
2940         * testsuite/std/time/year_month_day/3.cc: New test.
2941
2942 2021-02-24  Patrick Palka  <ppalka@redhat.com>
2943
2944         PR libstdc++/98384
2945         * testsuite/20_util/to_chars/long_double.cc: Include <optional>.
2946         (test01): Simplify verifying the nearby values by using a
2947         2-iteration loop and a dedicated output buffer to check that the
2948         nearby values are different.  Factor out the printf-based
2949         verification into a local function, and check that the leading
2950         hex digits agree before comparing to the output of printf.  Also
2951         verify the output by round-tripping it through from_chars.
2952
2953 2021-02-24  Jonathan Wakely  <jwakely@redhat.com>
2954
2955         PR libstdc++/98389
2956         * config/abi/pre/gnu.ver (GLIBCXX_3.4.29): Do not match to_chars
2957         symbols for long double arguments mangled as 'g'.
2958         * config/os/gnu-linux/ldbl-extra.ver: Likewise.
2959         * config/os/gnu-linux/ldbl-ieee128-extra.ver: Likewise.
2960         * src/c++17/Makefile.am [GLIBCXX_LDBL_ALT128_COMPAT_TRUE]:
2961         Use -mabi=ibmlongdouble for floating_to_chars.cc.
2962         * src/c++17/Makefile.in: Regenerate.
2963         * src/c++17/floating_to_chars.cc (floating_type_traits_binary128):
2964         New type defining type traits of IEEE binary128 format.
2965         (floating_type_traits<__float128>): Define specialization.
2966         (floating_type_traits<long double>): Define in terms of
2967         floating_type_traits_binary128 when appropriate.
2968         (floating_to_shortest_scientific): Handle __float128.
2969         (sprintf_ld): New function template for printing a long double
2970         or __ieee128 value using sprintf.
2971         (__floating_to_chars_shortest, __floating_to_chars_precision):
2972         Use sprintf_ld.
2973         (to_chars): Define overloads for __float128.
2974
2975 2021-02-24  Jonathan Wakely  <jwakely@redhat.com>
2976
2977         * testsuite/17_intro/names.cc: Undefine 'u' on powerpc*-linux*.
2978
2979 2021-02-23  Martin Sebor  <msebor@redhat.com>
2980
2981         PR c++/99074
2982         * libsupc++/dyncast.cc (__dynamic_cast): Return null when
2983         first argument is null.
2984
2985 2021-02-23  Jakub Jelinek  <jakub@redhat.com>
2986
2987         PR libstdc++/99181
2988         * testsuite/21_strings/char_traits/requirements/char/99181.cc: New
2989         test.
2990
2991 2021-02-23  Jakub Jelinek  <jakub@redhat.com>
2992
2993         PR libstdc++/99181
2994         * include/bits/char_traits.h (char_traits<char>::compare): For
2995         constexpr evaluation don't call
2996         __gnu_cxx::char_traits<char_type>::compare but do the comparison loop
2997         directly.
2998
2999 2021-02-23  Jakub Jelinek  <jakub@redhat.com>
3000
3001         PR libstdc++/97549
3002         * include/pstl/parallel_backend_serial.h: Remove __pstl::__par_backend.
3003
3004 2021-02-23  Patrick Palka  <ppalka@redhat.com>
3005
3006         PR libstdc++/98384
3007         * src/c++17/floating_to_chars.cc (get_ieee_repr): Extract
3008         the high- and low-order parts from an IBM long double value
3009         in an endian-agnostic way.
3010
3011 2021-02-19  Jonathan Wakely  <jwakely@redhat.com>
3012
3013         * include/bits/atomic_wait.h (__thread_relax()): Call
3014         __thread_yield() not __gthread_yield().
3015
3016 2021-02-15  Jonathan Wakely  <jwakely@redhat.com>
3017
3018         * include/bits/atomic_wait.h (__thread_yield()): Check
3019         _GLIBCXX_HAS_GTHREADS before using __gthread_yield.
3020         (__thread_relax()): Use __thread_yield() instead of repeating
3021         the preprocessor checks for __gthread_yield.
3022
3023 2021-02-15  Jonathan Wakely  <jwakely@redhat.com>
3024
3025         * include/std/mutex (once_flag::_M_activate()): Add explicit
3026         return statement for passive case.
3027         (once_flag::_M_finish(bool)): Use reserved name for parameter.
3028
3029 2021-02-14  Jonathan Wakely  <jwakely@redhat.com>
3030
3031         PR libstdc++/99096
3032         * testsuite/util/testsuite_fs.h: Always include <unistd.h>.
3033
3034 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
3035
3036         PR libstdc++/88881
3037         * src/c++17/fs_ops.cc (fs::symlink_status): Re-enable workaround.
3038
3039 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
3040
3041         * doc/xml/manual/status_cxx2014.xml: Document implementation
3042         specific properties of std::experimental::filesystem::rename.
3043         * doc/xml/manual/status_cxx2017.xml: Document implementation
3044         specific properties of std::filesystem::rename.
3045         * doc/html/*: Regenerate.
3046         * src/c++17/fs_ops.cc (fs::rename): Implement correct behaviour
3047         for directories on Windows.
3048         * src/filesystem/ops-common.h (__gnu_posix::rename): Use
3049         MoveFileExW on Windows.
3050         * testsuite/27_io/filesystem/operations/rename.cc: New test.
3051         * testsuite/experimental/filesystem/operations/rename.cc: New test.
3052
3053 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
3054
3055         * testsuite/util/testsuite_fs.h (nonexistent_path): Add
3056         random number to the path.
3057
3058 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
3059
3060         * include/experimental/internet (address_v6::to_string): Include
3061         scope ID in string.
3062         * testsuite/experimental/net/internet/address/v6/members.cc:
3063         Test to_string() results.
3064
3065 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
3066
3067         * include/experimental/internet (address_v6::any): Avoid using
3068         memcpy in constexpr function.
3069         (address_v6::loopback): Likewise.
3070         (make_address_v6): Fix missing return statements on error paths.
3071         * include/experimental/io_context: Avoid -Wdangling-else
3072         warning.
3073         * testsuite/experimental/net/internet/address/v4/members.cc:
3074         Remove unused variables.
3075         * testsuite/experimental/net/internet/address/v6/members.cc:
3076         New test.
3077
3078 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
3079
3080         * include/bits/shared_ptr_base.h (__shared_ptr::_M_get_deleter):
3081         Add unused attribute to parameter.
3082         * src/c++11/shared_ptr.cc (_Sp_make_shared_tag::_S_eq):
3083         Likewise.
3084
3085 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
3086
3087         * testsuite/27_io/basic_ostream/emit/1.cc: Expect test to fail
3088         if -fno-rtti is used.
3089         * testsuite/30_threads/async/forced_unwind.cc: Expect test
3090         to abort if -fno-rtti is used.
3091
3092 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
3093
3094         * testsuite/util/testsuite_allocator.h (memory_resource):
3095         Remove requirement for RTTI and exceptions to be enabled.
3096
3097 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
3098
3099         * testsuite/27_io/basic_istringstream/rdbuf/char/2832.cc: Use
3100         static_cast when RTTI is disabled.
3101         * testsuite/27_io/basic_istringstream/rdbuf/wchar_t/2832.cc:
3102         Likewise.
3103         * testsuite/27_io/basic_ostringstream/rdbuf/char/2832.cc:
3104         Likewise.
3105         * testsuite/27_io/basic_ostringstream/rdbuf/wchar_t/2832.cc:
3106         Likewise.
3107         * testsuite/27_io/basic_stringstream/str/char/2.cc:
3108         Likewise.
3109         * testsuite/27_io/basic_stringstream/str/wchar_t/2.cc:
3110         Likewise.
3111
3112 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
3113
3114         * include/std/ostream (__syncbuf_base::_S_get): Mark parameter
3115         as unused and only use dynamic_cast when RTTI is enabled.
3116
3117 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
3118
3119         PR libstdc++/99077
3120         * src/c++11/cxx11-ios_failure.cc (__ios_failure(const char*, int)):
3121         Change int parameter to error_code, to match std::ios_failure.
3122         (__throw_ios_failure(const char*, int)): Construct error_code
3123         from int parameter.
3124
3125 2021-02-11  Jonathan Wakely  <jwakely@redhat.com>
3126
3127         * libsupc++/eh_ptr.cc (_GLIBCXX_EH_PTR_RELOPS_COMPAT): Define
3128         new macro.
3129         * libsupc++/exception_ptr.h (_GLIBCXX_EH_PTR_USED): Check new
3130         macro instead of _GLIBCXX_EH_PTR_COMPAT.
3131         (operator==): Likewise.
3132
3133 2021-02-11  Jonathan Wakely  <jwakely@redhat.com>
3134
3135         PR libstdc++/99058
3136         * doc/xml/manual/status_cxx2011.xml: Document when support
3137         became stable.
3138         * doc/xml/manual/status_cxx2014.xml: Likewise.
3139         * doc/xml/manual/status_cxx2017.xml: Likewise.
3140         * doc/html/manual/status.html: Regenerate.
3141
3142 2021-02-10  Jonathan Wakely  <jwakely@redhat.com>
3143
3144         PR libstdc++/88881
3145         * src/c++17/fs_ops.cc (fs::status): Re-enable workaround.
3146
3147 2021-02-10  Jonathan Wakely  <jwakely@redhat.com>
3148
3149         * src/c++17/fs_ops.cc (fs::create_hard_link, fs::equivalent)
3150         (fs::remove): Use std::system_category() for error codes from
3151         GetLastError().
3152         * src/filesystem/ops.cc (fs::create_hard_link, fs::remove):
3153         Likewise.
3154
3155 2021-02-10  Jonathan Wakely  <jwakely@redhat.com>
3156
3157         * testsuite/27_io/filesystem/operations/proximate.cc: Fix typo
3158         in __MINGW32__ macro name.
3159         * testsuite/27_io/filesystem/path/compare/lwg2936.cc: Likewise.
3160         * testsuite/27_io/filesystem/path/generation/proximate.cc:
3161         Likewise.
3162         * testsuite/27_io/filesystem/path/generation/relative.cc:
3163         Likewise.
3164         * testsuite/util/testsuite_fs.h: Likewise.
3165
3166 2021-02-09  François Dumont  <fdumont@gcc.gnu.org>
3167
3168         * include/bits/stl_tree.h
3169         (__has_is_transparent, __has_is_transparent_t): Move...
3170         * include/bits/stl_function.h: ...here.
3171         * include/bits/hashtable_policy.h (_Hash_code_base<>::_M_hash_code_tr): New..
3172         (_Hashtable_base<>::_M_equals_tr): New.
3173         * include/bits/hashtable.h (_Hashtable<>::_M_find_tr, _Hashtable<>::_M_count_tr,
3174         _Hashtable<>::_M_equal_range_tr): New member function templates to perform
3175         heterogeneous lookup.
3176         (_Hashtable<>::_M_find_before_node_tr): New.
3177         (_Hashtable<>::_M_find_node_tr): New.
3178         * include/bits/unordered_map.h (unordered_map::find<>, unordered_map::count<>,
3179         unordered_map::contains<>, unordered_map::equal_range<>): New member function
3180         templates to perform heterogeneous lookup.
3181         (unordered_multimap::find<>, unordered_multimap::count<>,
3182         unordered_multimap::contains<>, unordered_multimap::equal_range<>): Likewise.
3183         * include/bits/unordered_set.h  (unordered_set::find<>, unordered_set::count<>,
3184         unordered_set::contains<>, unordered_set::equal_range<>): Likewise.
3185         (unordered_multiset::find<>, unordered_multiset::count<>,
3186         unordered_multiset::contains<>, unordered_multiset::equal_range<>): Likewise.
3187         * include/debug/unordered_map
3188         (unordered_map::find<>, unordered_map::equal_range<>): Likewise.
3189         (unordered_multimap::find<>, unordered_multimap::equal_range<>): Likewise.
3190         * include/debug/unordered_set
3191         (unordered_set::find<>, unordered_set::equal_range<>): Likewise.
3192         (unordered_multiset::find<>, unordered_multiset::equal_range<>): Likewise.
3193         * testsuite/23_containers/unordered_map/operations/1.cc: New test.
3194         * testsuite/23_containers/unordered_multimap/operations/1.cc: New test.
3195         * testsuite/23_containers/unordered_multiset/operations/1.cc: New test.
3196         * testsuite/23_containers/unordered_set/operations/1.cc: New test.
3197
3198 2021-02-09  François Dumont  <fdumont@gcc.gnu.org>
3199
3200         * include/bits/stl_deque.h
3201         (std::operator-(deque::iterator, deque::iterator)): Replace if/then with
3202         a null pointer test.
3203
3204 2021-02-09  Jonathan Wakely  <jwakely@redhat.com>
3205
3206         * testsuite/27_io/filesystem/operations/remove_all.cc: Remove
3207         test directory after making it writable again.
3208         * testsuite/experimental/filesystem/operations/remove_all.cc:
3209         Likewise.
3210
3211 2021-02-09  Jonathan Wakely  <jwakely@redhat.com>
3212
3213         PR libstdc++/99021
3214         * include/std/coroutine (coroutine_handle<P>::from_address): Add
3215         noexcept.
3216
3217 2021-02-09  Vladimir Vishnevsky  <vv.os.swe@gmail.com>
3218
3219         * include/ext/stdio_sync_filebuf.h: Remove unused <unistd.h>.
3220         * src/c++17/fs_ops.cc (fs::permissions): Qualify mode_t.
3221
3222 2021-02-09  Jakub Jelinek  <jakub@redhat.com>
3223
3224         PR middle-end/98465
3225         * include/bits/basic_string.tcc (basic_string::_M_replace): When __s
3226         points to the characters moved by earlier _S_move, compute the source
3227         address using expression based on the __p pointer rather than __s
3228         pointer.
3229
3230 2021-02-03  Jonathan Wakely  <jwakely@redhat.com>
3231
3232         * testsuite/19_diagnostics/error_code/operators/not_equal.cc:
3233         Add comparison with same category and different values.
3234         * testsuite/19_diagnostics/error_code/operators/less.cc:
3235         Likewise. Fix comparison involving different categories.
3236         * testsuite/19_diagnostics/error_code/operators/three_way.cc:
3237         Likewise.
3238         * testsuite/19_diagnostics/error_condition/operators/less.cc:
3239         Add comment.
3240         * testsuite/19_diagnostics/error_condition/operators/three_way.cc:
3241         Likewise.
3242
3243 2021-02-03  yaozhongxiao  <yaozhongxiao@linux.alibaba.com>
3244
3245         * include/experimental/bits/simd_neon.h: Replace repeated vpadd
3246         calls with a single vaddv for aarch64.
3247
3248 2021-02-03  Matthias Kretz  <kretz@kde.org>
3249
3250         * testsuite/Makefile.am: Warn about the workaround. Add
3251         -fno-tree-vrp to CXXFLAGS passed to the check_simd script.
3252         Improve initial user feedback from make check-simd.
3253         * testsuite/Makefile.in: Regenerated.
3254
3255 2021-02-03  Matthias Kretz  <kretz@kde.org>
3256
3257         * include/experimental/bits/simd.h: Add __detail::_Minimum and
3258         __detail::_Maximum to use them as _BinaryOperation to _S_reduce.
3259         Add hmin and hmax overloads for simd and const_where_expression.
3260         * include/experimental/bits/simd_scalar.h
3261         (_SimdImplScalar::_S_reduce): Make unused _BinaryOperation
3262         parameter const-ref to allow calling _S_reduce with an rvalue.
3263         * testsuite/experimental/simd/tests/reductions.cc: Add tests for
3264         hmin and hmax. Since the compiler statically determined that all
3265         tests pass, repeat the test after a call to make_value_unknown.
3266
3267 2021-02-03  Matthias Kretz  <kretz@kde.org>
3268
3269         * testsuite/experimental/simd/tests/bits/verify.h (verify): Add
3270         instruction pointer data member. Ensure that the `if (m_failed)`
3271         branch is always inlined into the calling code. The body of the
3272         conditional can still be a function call. Move the get_ip call
3273         into the verify ctor to simplify the ctor calls.
3274         (COMPARE): Don't mention the use of all_of for reduction of a
3275         simd_mask. It only distracts from the real issue.
3276
3277 2021-02-03  Matthias Kretz  <kretz@kde.org>
3278
3279         * testsuite/experimental/simd/driver.sh: Abstract reading test
3280         options into read_src_option function. Read skip, only,
3281         expensive, and xfail via read_src_option. Add timeout and
3282         timeout-factor options and adjust timeout variable accordingly.
3283         * testsuite/experimental/simd/tests/loadstore.cc: Set
3284         timeout-factor 2.
3285
3286 2021-02-03  Matthias Kretz  <kretz@kde.org>
3287
3288         * testsuite/experimental/simd/driver.sh: When handling the pipe
3289         to log (and on verbose to stdout) count the lines. If it exceeds
3290         1000 log the issue and exit 125, which is then handled as a
3291         failure.
3292
3293 2021-02-03  Matthias Kretz  <kretz@kde.org>
3294
3295         * testsuite/experimental/simd/tests/hypot3_fma.cc: Add skip:
3296         markup for long double on powerpc64*.
3297
3298 2021-02-03  Matthias Kretz  <kretz@kde.org>
3299
3300         * include/experimental/bits/simd.h: Add __have_power10vec
3301         conditional on _ARCH_PWR10.
3302         * include/experimental/bits/simd_builtin.h: Forward declare
3303         _MaskImplPpc and use it as _MaskImpl when __ALTIVEC__ is
3304         defined.
3305         (_MaskImplBuiltin::_S_some_of): Call _S_popcount from the
3306         _SuperImpl for optimizations and correctness.
3307         * include/experimental/bits/simd_ppc.h: Add _MaskImplPpc.
3308         (_MaskImplPpc::_S_popcount): Implement via vec_cntm for POWER10.
3309         Otherwise, for >=int use -vec_sums divided by a sizeof factor.
3310         For <int use -vec_sums(vec_sum4s(...)) to sum all mask entries.
3311
3312 2021-02-03  Matthias Kretz  <kretz@kde.org>
3313
3314         * testsuite/experimental/simd/driver.sh: Remove executable on
3315         SIGINT. Process compiler and test executable output: In verbose
3316         mode print messages immediately, limited to 1000 lines and
3317         breaking long lines to below $COLUMNS (or 1024 if not set).
3318         Communicating the exit status of the compiler / test with the
3319         necessary pipe is done via a message through stdout/-in.
3320
3321 2021-02-03  Matthias Kretz  <kretz@kde.org>
3322
3323         * testsuite/Makefile.am: Ensure .simd.summary is empty before
3324         collecting a new summary.
3325         * testsuite/Makefile.in: Regenerate.
3326
3327 2021-02-03  Matthias Kretz  <kretz@kde.org>
3328
3329         * testsuite/experimental/simd/generate_makefile.sh: Use
3330         different variables internally than documented for user
3331         overrides. This makes internal append/prepend work as intended.
3332
3333 2021-02-03  Matthias Kretz  <kretz@kde.org>
3334
3335         * testsuite/experimental/simd/driver.sh (verify_test): Print
3336         test output on run xfail. Do not repeat lines from the log that
3337         were already printed on stdout.
3338         (test_selector): Make the compiler flags pattern usable as a
3339         substring selector.
3340         (toplevel): Trap on SIGINT and remove the log and sum files.
3341         Call timout with --foreground to quickly terminate on SIGINT.
3342         * testsuite/experimental/simd/generate_makefile.sh: Simplify run
3343         targets via target patterns. Default DRIVEROPTS to -v for run
3344         targets. Remove log and sum files after completion of the run
3345         target (so that it's always recompiled).
3346         Place help text into text file for reasonable 'make help'
3347         performance.
3348
3349 2021-02-03  Matthias Kretz  <kretz@kde.org>
3350
3351         * include/experimental/bits/simd.h: Remove unnecessary static
3352         assertion. Allow sizeof(8) integer __intrinsic_type to enable
3353         the necessary mask type.
3354
3355 2021-02-03  Matthias Kretz  <kretz@kde.org>
3356
3357         * include/experimental/bits/simd.h: Let __intrinsic_type<long
3358         double, N> be valid if sizeof(long double) == sizeof(double) and
3359         use a __vector double as member type.
3360
3361 2021-02-03  Matthias Kretz  <kretz@kde.org>
3362
3363         * include/experimental/bits/simd.h (__is_intrinsic_type): New
3364         internal type trait. Alias for __is_vector_type on x86.
3365         (_VectorTraitsImpl): Enable for __intrinsic_type in addition for
3366         __vector_type.
3367         (__intrin_bitcast): Allow casting to & from vector & intrinsic
3368         types.
3369         (__intrinsic_type): Explicitly specialize for NEON intrinsic
3370         vector types.
3371
3372 2021-02-03  Matthias Kretz  <kretz@kde.org>
3373
3374         * testsuite/experimental/simd/driver.sh: Implement skip, only,
3375         expensive, and xfail markers. They can select on type, ABI tag
3376         subset number, target-triplet, and compiler flags.
3377         * testsuite/experimental/simd/generate_makefile.sh: The summary
3378         now includes lines for unexpected passes and expected failures.
3379         If the skip or only markers are only conditional on the type, do
3380         not generate rules for those types.
3381         * testsuite/experimental/simd/tests/abs.cc: Mark test expensive
3382         for ABI tag subsets 1-9.
3383         * testsuite/experimental/simd/tests/algorithms.cc: Ditto.
3384         * testsuite/experimental/simd/tests/broadcast.cc: Ditto.
3385         * testsuite/experimental/simd/tests/casts.cc: Ditto.
3386         * testsuite/experimental/simd/tests/generator.cc: Ditto.
3387         * testsuite/experimental/simd/tests/integer_operators.cc: Ditto.
3388         * testsuite/experimental/simd/tests/loadstore.cc: Ditto.
3389         * testsuite/experimental/simd/tests/mask_broadcast.cc: Ditto.
3390         * testsuite/experimental/simd/tests/mask_conversions.cc: Ditto.
3391         * testsuite/experimental/simd/tests/mask_implicit_cvt.cc: Ditto.
3392         * testsuite/experimental/simd/tests/mask_loadstore.cc: Ditto.
3393         * testsuite/experimental/simd/tests/mask_operator_cvt.cc: Ditto.
3394         * testsuite/experimental/simd/tests/mask_operators.cc: Ditto.
3395         * testsuite/experimental/simd/tests/mask_reductions.cc: Ditto.
3396         * testsuite/experimental/simd/tests/operator_cvt.cc: Ditto.
3397         * testsuite/experimental/simd/tests/operators.cc: Ditto.
3398         * testsuite/experimental/simd/tests/reductions.cc: Ditto.
3399         * testsuite/experimental/simd/tests/simd.cc: Ditto.
3400         * testsuite/experimental/simd/tests/split_concat.cc: Ditto.
3401         * testsuite/experimental/simd/tests/splits.cc: Ditto.
3402         * testsuite/experimental/simd/tests/where.cc: Ditto.
3403         * testsuite/experimental/simd/tests/fpclassify.cc: Ditto. In
3404         addition replace "test only floattypes" marker by unconditional
3405         "float|double|ldouble" only marker.
3406         * testsuite/experimental/simd/tests/frexp.cc: Ditto.
3407         * testsuite/experimental/simd/tests/hypot3_fma.cc: Ditto.
3408         * testsuite/experimental/simd/tests/ldexp_scalbn_scalbln_modf.cc:
3409         Ditto.
3410         * testsuite/experimental/simd/tests/logarithm.cc: Ditto.
3411         * testsuite/experimental/simd/tests/math_1arg.cc: Ditto.
3412         * testsuite/experimental/simd/tests/math_2arg.cc: Ditto.
3413         * testsuite/experimental/simd/tests/remqo.cc: Ditto.
3414         * testsuite/experimental/simd/tests/trigonometric.cc: Ditto.
3415         * testsuite/experimental/simd/tests/trunc_ceil_floor.cc: Ditto.
3416         * testsuite/experimental/simd/tests/sincos.cc: Ditto. In
3417         addition, xfail on run because the reference data is missing.
3418
3419 2021-02-02  Jonathan Wakely  <jwakely@redhat.com>
3420
3421         * doc/xml/manual/status_cxx2011.xml: Remove stray table cell.
3422         * doc/xml/manual/status_cxx2014.xml: Likewise.
3423         * doc/xml/manual/status_cxx2017.xml: Likewise.
3424         * doc/html/manual/status.html: Regenerate.
3425
3426 2021-02-01  François Dumont  <fdumont@gcc.gnu.org>
3427
3428         PR libstdc++/70303
3429         * include/bits/stl_deque.h (std::deque<>::operator-(iterator, iterator)):
3430         Return 0 if both iterators are value-initialized.
3431         * testsuite/23_containers/deque/70303.cc: New test.
3432         * testsuite/23_containers/vector/70303.cc: New test.
3433
3434 2021-02-01  Jonathan Wakely  <jwakely@redhat.com>
3435
3436         * doc/xml/manual/status_cxx2011.xml: Update std::call_once
3437         status.
3438         * doc/xml/manual/status_cxx2014.xml: Likewise.
3439         * doc/xml/manual/status_cxx2017.xml: Likewise. Update
3440         std::from_chars and std::to_chars status. Fix formatting.
3441         * doc/html/manual/status.html: Regenerate.
3442
3443 2021-01-28  Jonathan Wakely  <jwakely@redhat.com>
3444
3445         * include/experimental/bits/numeric_traits.h: Update copyright
3446         dates.
3447         * include/experimental/bits/simd.h: Likewise.
3448         * include/experimental/bits/simd_builtin.h: Likewise.
3449         * include/experimental/bits/simd_converter.h: Likewise.
3450         * include/experimental/bits/simd_detail.h: Likewise.
3451         * include/experimental/bits/simd_fixed_size.h: Likewise.
3452         * include/experimental/bits/simd_math.h: Likewise.
3453         * include/experimental/bits/simd_neon.h: Likewise.
3454         * include/experimental/bits/simd_ppc.h: Likewise.
3455         * include/experimental/bits/simd_scalar.h: Likewise.
3456         * include/experimental/bits/simd_x86.h: Likewise.
3457         * include/experimental/bits/simd_x86_conversions.h: Likewise.
3458         * include/experimental/simd: Likewise.
3459         * testsuite/experimental/simd/*: Likewise.
3460
3461 2021-01-27  Jonathan Wakely  <jwakely@redhat.com>
3462
3463         * doc/xml/manual/status_cxx2017.xml: Replace invalid entity.
3464         * doc/html/*: Regenerate.
3465
3466 2021-01-27  Jonathan Wakely  <jwakely@redhat.com>
3467
3468         * testsuite/experimental/simd/generate_makefile.sh: Use printf
3469         instead of echo when printing escape characters.
3470
3471 2021-01-27  Matthias Kretz  <kretz@kde.org>
3472
3473         * scripts/check_simd: New file. This script is called from the
3474         the check-simd target. It determines a set of compiler flags and
3475         simulator setups for calling generate_makefile.sh and passes the
3476         information back to the check-simd target, which recurses to the
3477         generated Makefiles.
3478         * scripts/create_testsuite_files: Remove files below simd/tests/
3479         from testsuite_files and place them in testsuite_files_simd.
3480         * testsuite/Makefile.am: Add testsuite_files_simd. Add
3481         check-simd target.
3482         * testsuite/Makefile.in: Regenerate.
3483         * testsuite/experimental/simd/driver.sh: New file. This script
3484         compiles and runs a given simd test, logging its output and
3485         status. It uses the timeout command to implement compile and
3486         test timeouts.
3487         * testsuite/experimental/simd/generate_makefile.sh: New file.
3488         This script generates a Makefile which uses driver.sh to compile
3489         and run the tests and collect the logs into a single log file.
3490         * testsuite/experimental/simd/tests/abs.cc: New file. Tests
3491         abs(simd).
3492         * testsuite/experimental/simd/tests/algorithms.cc: New file.
3493         Tests min/max(simd, simd).
3494         * testsuite/experimental/simd/tests/bits/conversions.h: New
3495         file. Contains functions to support tests involving conversions.
3496         * testsuite/experimental/simd/tests/bits/make_vec.h: New file.
3497         Support functions make_mask and make_vec.
3498         * testsuite/experimental/simd/tests/bits/mathreference.h: New
3499         file. Support functions to supply precomputed math function
3500         reference data.
3501         * testsuite/experimental/simd/tests/bits/metahelpers.h: New
3502         file. Support code for SFINAE testing.
3503         * testsuite/experimental/simd/tests/bits/simd_view.h: New file.
3504         * testsuite/experimental/simd/tests/bits/test_values.h: New
3505         file. Test functions to easily drive a test with simd objects
3506         initialized from a given list of values and a range of random
3507         values.
3508         * testsuite/experimental/simd/tests/bits/ulp.h: New file.
3509         Support code to determine the ULP distance of simd objects.
3510         * testsuite/experimental/simd/tests/bits/verify.h: New file.
3511         Test framework for COMPARE'ing simd objects and instantiating
3512         the test templates with value_type and ABI tag.
3513         * testsuite/experimental/simd/tests/broadcast.cc: New file. Test
3514         simd broadcasts.
3515         * testsuite/experimental/simd/tests/casts.cc: New file. Test
3516         simd casts.
3517         * testsuite/experimental/simd/tests/fpclassify.cc: New file.
3518         Test floating-point classification functions.
3519         * testsuite/experimental/simd/tests/frexp.cc: New file. Test
3520         frexp(simd).
3521         * testsuite/experimental/simd/tests/generator.cc: New file. Test
3522         simd generator constructor.
3523         * testsuite/experimental/simd/tests/hypot3_fma.cc: New file.
3524         Test 3-arg hypot(simd,simd,simd) and fma(simd,simd,sim).
3525         * testsuite/experimental/simd/tests/integer_operators.cc: New
3526         file. Test integer operators.
3527         * testsuite/experimental/simd/tests/ldexp_scalbn_scalbln_modf.cc:
3528         New file. Test ldexp(simd), scalbn(simd), scalbln(simd), and
3529         modf(simd).
3530         * testsuite/experimental/simd/tests/loadstore.cc: New file. Test
3531         (converting) simd loads and stores.
3532         * testsuite/experimental/simd/tests/logarithm.cc: New file. Test
3533         log*(simd).
3534         * testsuite/experimental/simd/tests/mask_broadcast.cc: New file.
3535         Test simd_mask broadcasts.
3536         * testsuite/experimental/simd/tests/mask_conversions.cc: New
3537         file. Test simd_mask conversions.
3538         * testsuite/experimental/simd/tests/mask_implicit_cvt.cc: New
3539         file. Test simd_mask implicit conversions.
3540         * testsuite/experimental/simd/tests/mask_loadstore.cc: New file.
3541         Test simd_mask loads and stores.
3542         * testsuite/experimental/simd/tests/mask_operator_cvt.cc: New
3543         file. Test simd_mask operators convert as specified.
3544         * testsuite/experimental/simd/tests/mask_operators.cc: New file.
3545         Test simd_mask compares, subscripts, and negation.
3546         * testsuite/experimental/simd/tests/mask_reductions.cc: New
3547         file. Test simd_mask reductions.
3548         * testsuite/experimental/simd/tests/math_1arg.cc: New file. Test
3549         1-arg math functions on simd.
3550         * testsuite/experimental/simd/tests/math_2arg.cc: New file. Test
3551         2-arg math functions on simd.
3552         * testsuite/experimental/simd/tests/operator_cvt.cc: New file.
3553         Test implicit conversions on simd binary operators behave as
3554         specified.
3555         * testsuite/experimental/simd/tests/operators.cc: New file. Test
3556         simd compares, subscripts, not, unary minus, plus, minus,
3557         multiplies, divides, increment, and decrement.
3558         * testsuite/experimental/simd/tests/reductions.cc: New file.
3559         Test reduce(simd).
3560         * testsuite/experimental/simd/tests/remqo.cc: New file. Test
3561         remqo(simd).
3562         * testsuite/experimental/simd/tests/simd.cc: New file. Basic
3563         sanity checks of simd types.
3564         * testsuite/experimental/simd/tests/sincos.cc: New file. Test
3565         sin(simd) and cos(simd).
3566         * testsuite/experimental/simd/tests/split_concat.cc: New file.
3567         Test split(simd) and concat(simd, simd).
3568         * testsuite/experimental/simd/tests/splits.cc: New file. Test
3569         split(simd_mask).
3570         * testsuite/experimental/simd/tests/trigonometric.cc: New file.
3571         Test remaining trigonometric functions on simd.
3572         * testsuite/experimental/simd/tests/trunc_ceil_floor.cc: New
3573         file. Test trunc(simd), ceil(simd), and floor(simd).
3574         * testsuite/experimental/simd/tests/where.cc: New file. Test
3575         masked operations using where.
3576
3577 2021-01-27  Matthias Kretz  <kretz@kde.org>
3578
3579         * doc/xml/manual/status_cxx2017.xml: Add implementation status
3580         of the Parallelism TS 2. Document implementation-defined types
3581         and behavior.
3582         * include/Makefile.am: Add new headers.
3583         * include/Makefile.in: Regenerate.
3584         * include/experimental/simd: New file. New header for
3585         Parallelism TS 2.
3586         * include/experimental/bits/numeric_traits.h: New file.
3587         Implementation of P1841R1 using internal naming. Addition of
3588         missing IEC559 functionality query.
3589         * include/experimental/bits/simd.h: New file. Definition of the
3590         public simd interfaces and general implementation helpers.
3591         * include/experimental/bits/simd_builtin.h: New file.
3592         Implementation of the _VecBuiltin simd_abi.
3593         * include/experimental/bits/simd_converter.h: New file. Generic
3594         simd conversions.
3595         * include/experimental/bits/simd_detail.h: New file. Internal
3596         macros for the simd implementation.
3597         * include/experimental/bits/simd_fixed_size.h: New file. Simd
3598         fixed_size ABI specific implementations.
3599         * include/experimental/bits/simd_math.h: New file. Math
3600         overloads for simd.
3601         * include/experimental/bits/simd_neon.h: New file. Simd NEON
3602         specific implementations.
3603         * include/experimental/bits/simd_ppc.h: New file. Implement bit
3604         shifts to avoid invalid results for integral types smaller than
3605         int.
3606         * include/experimental/bits/simd_scalar.h: New file. Simd scalar
3607         ABI specific implementations.
3608         * include/experimental/bits/simd_x86.h: New file. Simd x86
3609         specific implementations.
3610         * include/experimental/bits/simd_x86_conversions.h: New file.
3611         x86 specific conversion optimizations. The conversion patterns
3612         work around missing conversion patterns in the compiler and
3613         should be removed as soon as PR85048 is resolved.
3614         * testsuite/experimental/simd/standard_abi_usable.cc: New file.
3615         Test that all (not all fixed_size<N>, though) standard simd and
3616         simd_mask types are usable.
3617         * testsuite/experimental/simd/standard_abi_usable_2.cc: New
3618         file. As above but with -ffast-math.
3619         * testsuite/libstdc++-dg/conformance.exp: Don't build simd tests
3620         from the standard test loop. Instead use
3621         check_vect_support_and_set_flags to build simd tests with the
3622         relevant machine flags.
3623
3624 2021-01-27  Jonathan Wakely  <jwakely@redhat.com>
3625
3626         PR libstdc++/66414
3627         * include/bits/string_view.tcc
3628         (basic_string_view::find(const CharT*, size_type, size_type)):
3629         Optimize.
3630
3631 2021-01-27  Paul Fee  <paul.f.fee@gmail.com>
3632
3633         * include/bits/basic_string.h (basic_string::contains): New
3634         member functions.
3635         * include/std/string_view (basic_string_view::contains):
3636         Likewise.
3637         * include/std/version (__cpp_lib_string_contains): Define.
3638         * testsuite/21_strings/basic_string/operations/starts_with/char/1.cc:
3639         Remove trailing whitespace.
3640         * testsuite/21_strings/basic_string/operations/starts_with/wchar_t/1.cc:
3641         Likewise.
3642         * testsuite/21_strings/basic_string/operations/contains/char/1.cc: New test.
3643         * testsuite/21_strings/basic_string/operations/contains/wchar_t/1.cc: New test.
3644         * testsuite/21_strings/basic_string_view/operations/contains/char/1.cc: New test.
3645         * testsuite/21_strings/basic_string_view/operations/contains/char/2.cc: New test.
3646         * testsuite/21_strings/basic_string_view/operations/contains/wchar_t/1.cc: New test.
3647
3648 2021-01-21  Jonathan Wakely  <jwakely@redhat.com>
3649
3650         * src/c++17/Makefile.in: Regenerate.
3651
3652 2021-01-20  David Edelsohn  <dje.gcc@gmail.com>
3653
3654         * config/os/aix/ctype_inline.h (bool ctype<char>:: is): Cast
3655         _OBJ_DATA subscript to unsigned char. Add _THREAD_SAFE access to
3656         __lc_type.
3657         (const char* ctype<char>:: is): Same.
3658
3659 2021-01-18  Jonathan Wakely  <jwakely@redhat.com>
3660
3661         PR libstdc++/98725
3662         * testsuite/20_util/unique_ptr/io/lwg2948.cc:  Do not try to
3663         write to a wide character stream if wide character support is
3664         disabled in the library.
3665
3666 2021-01-18  Jonathan Wakely  <jwakely@redhat.com>
3667
3668         * testsuite/27_io/basic_stringstream/cons/char/1.cc: Use
3669         stringbuf not wstringbuf.
3670
3671 2021-01-18  Jakub Jelinek  <jakub@redhat.com>
3672
3673         PR debug/98708
3674         * src/c++11/Makefile.am (cxx11-ios_failure-lt.s, cxx11-ios_failure.s):
3675         Compile with -gno-as-loc-support.
3676         * src/c++11/Makefile.in: Regenerated.
3677
3678 2021-01-16  H.J. Lu  <hjl.tools@gmail.com>
3679
3680         * testsuite/29_atomics/atomic_flag/test_and_set/explicit-hle.cc:
3681         Add -fcf-protection=none to -march=i486.
3682
3683 2021-01-14  François Dumont  <fdumont@gcc.gnu.org>
3684
3685         * testsuite/23_containers/deque/debug/98466.cc: Make it pre-C++11
3686         compliant.
3687
3688 2021-01-14  Alexandre Oliva  <oliva@adacore.com>
3689
3690         * testsuite/30_threads/future/members/poll.cc: Calibrate
3691         iteration count.
3692
3693 2021-01-14  François Dumont  <fdumont@gcc.gnu.org>
3694
3695         PR libstdc++/98466
3696         * include/bits/hashtable_policy.h (_Node_iterator_base()): Set _M_cur to nullptr.
3697         (_Node_iterator()): Make default.
3698         (_Node_const_iterator()): Make default.
3699         * include/debug/macros.h (__glibcxx_check_erae_range_after): Add _M_singular
3700         iterator checks.
3701         * include/debug/safe_iterator.h
3702         (_GLIBCXX_DEBUG_VERIFY_OPERANDS): Accept if both iterator are value initialized.
3703         * include/debug/safe_local_iterator.h (_GLIBCXX_DEBUG_VERIFY_OPERANDS):
3704         Likewise.
3705         * include/debug/safe_iterator.tcc (_Safe_iterator<>::_M_valid_range): Add
3706         _M_singular checks on input iterators.
3707         * src/c++11/debug.cc (_Safe_iterator_base::_M_can_compare): Remove _M_singular
3708         checks.
3709         * testsuite/23_containers/deque/debug/98466.cc: New test.
3710         * testsuite/23_containers/unordered_map/debug/98466.cc: New test.
3711
3712 2021-01-14  Jonathan Wakely  <jwakely@redhat.com>
3713
3714         PR libstdc++/98471
3715         * include/bits/fs_path.h (__throw_conversion_error): New
3716         function to throw or abort on character conversion errors.
3717         (__wstr_from_utf8): Move definition after filesystem_error has
3718         been defined. Use __throw_conversion_error.
3719         (path::_S_convert<_EcharT>): Use __throw_conversion_error.
3720         (path::_S_str_convert<_CharT, _Traits, _Allocator>): Likewise.
3721         (path::u8string): Likewise.
3722
3723 2021-01-14  Jonathan Wakely  <jwakely@redhat.com>
3724
3725         * include/std/barrier: Update copyright years. Fix whitespace.
3726         * include/std/version: Fix whitespace.
3727         * testsuite/30_threads/barrier/1.cc: Update copyright years.
3728         * testsuite/30_threads/barrier/2.cc: Likewise.
3729         * testsuite/30_threads/barrier/arrive.cc: Likewise.
3730         * testsuite/30_threads/barrier/arrive_and_drop.cc: Likewise.
3731         * testsuite/30_threads/barrier/arrive_and_wait.cc: Likewise.
3732         * testsuite/30_threads/barrier/completion.cc: Likewise.
3733
3734 2021-01-13  Jonathan Wakely  <jwakely@redhat.com>
3735
3736         * doc/doxygen/user.cfg.in (INPUT): Remove include/debug/array.
3737
3738 2021-01-10  David Edelsohn  <dje.gcc@gmail.com>
3739
3740         PR libstdc++/98613
3741         * testsuite/ext/vstring/cons/moveable.cc: Suppress false positive
3742         warning.
3743         * testsuite/ext/vstring/modifiers/assign/move_assign.cc: Same.
3744
3745 2021-01-08  Olivier Hainque  <hainque@adacore.com>
3746
3747         * testsuite/20_util/bind/ref_neg.cc: Tweak the
3748         dg-prune-output regex for out-of-build-tree contexts.
3749
3750 2021-01-07  Thomas Rodgers  <trodgers@redhat.com>
3751
3752         * doc/doxygen/user.cfg.in: Add new header.
3753         * include/Makefile.am (std_headers): likewise.
3754         * include/Makefile.in: Regenerate.
3755         * include/precompiled/stdc++.h: Add new header.
3756         * include/std/barrier: New file.
3757         * include/std/version: Add __cpp_lib_barrier feature test macro.
3758         * testsuite/30_threads/barrier/1.cc: New test.
3759         * testsuite/30_threads/barrier/2.cc: Likewise.
3760         * testsuite/30_threads/barrier/arrive_and_drop.cc: Likewise.
3761         * testsuite/30_threads/barrier/arrive_and_wait.cc: Likewise.
3762         * testsuite/30_threads/barrier/arrive.cc: Likewise.
3763         * testsuite/30_threads/barrier/completion.cc: Likewise.
3764
3765 2021-01-07  Patrick Palka  <ppalka@redhat.com>
3766
3767         PR libstdc++/98384
3768         * testsuite/20_util/to_chars/long_double.cc: Use nexttowardl
3769         instead of the non-standard nextupl and nextdownl.
3770
3771 2021-01-05  Samuel Thibault  <samuel.thibault@ens-lyon.org>
3772
3773         * configure: Re-generate.
3774
3775 2021-01-05  Ed Smith-Rowland  <3dw4rd@verizon.net>
3776
3777         * include/precompiled/stdc++.h: Add <source_location> to C++20 section.
3778
3779 2021-01-01  Jakub Jelinek  <jakub@redhat.com>
3780
3781         * ChangeLog-2020: Rotate ChangeLog.  New file.
3782
3783 \f
3784 Copyright (C) 2021 Free Software Foundation, Inc.
3785
3786 Copying and distribution of this file, with or without modification,
3787 are permitted in any medium without royalty provided the copyright
3788 notice and this notice are preserved.