libstdc++-v3/ChangeLog

   1 2019-10-18  Jonathan Wakely  <jwakely@redhat.com>
   2
   3         PR libstdc++/92143
   4         * libsupc++/new_opa.cc (operator new) [__APPLE__]: Increase alignment
   5         to at least sizeof(void*).
   6
   7         * include/bits/range_cmp.h (ranges::less::operator()): Inline the
   8         logic from std::less::operator() to remove the dependency on it.
   9
  10 2019-10-17  Jonathan Wakely  <jwakely@redhat.com>
  11
  12         * doc/doxygen/user.cfg.in (INPUT): Add new C++17 and C++20 headers.
  13
  14         * include/Makefile.am: Add new header.
  15         * include/Makefile.in: Regenerate.
  16         * include/bits/range_cmp.h: New header for C++20 function objects.
  17         * include/std/functional: Include new header.
  18         * testsuite/20_util/function_objects/identity/1.cc: New test.
  19         * testsuite/20_util/function_objects/range.cmp/equal_to.cc: New test.
  20         * testsuite/20_util/function_objects/range.cmp/greater.cc: New test.
  21         * testsuite/20_util/function_objects/range.cmp/greater_equal.cc: New
  22         test.
  23         * testsuite/20_util/function_objects/range.cmp/less.cc: New test.
  24         * testsuite/20_util/function_objects/range.cmp/less_equal.cc: New test.
  25         * testsuite/20_util/function_objects/range.cmp/not_equal_to.cc: New
  26         test.
  27
  28         PR libstdc++/92124
  29         * include/bits/forward_list.h
  30         (_M_move_assign(forward_list&&, false_type)): Do not use
  31         __make_move_if_noexcept, instead move unconditionally.
  32         * include/bits/stl_deque.h (_M_move_assign2(deque&&, false_type)):
  33         Likewise.
  34         * include/bits/stl_list.h (_M_move_assign(list&&, false_type)):
  35         Likewise.
  36         * include/bits/stl_vector.h (_M_move_assign(vector&&, false_type)):
  37         Likewise.
  38         * testsuite/23_containers/vector/92124.cc: New test.
  39
  40 2019-10-16  Jonathan Wakely  <jwakely@redhat.com>
  41
  42         * include/bits/c++config (_GLIBCXX_BUILTIN_IS_SAME_AS): Define to
  43         one of __is_same_as or __is_same when available.
  44         * include/std/concepts (__detail::__same_as): Use std::is_same_v.
  45         * include/std/type_traits (is_same) [_GLIBCXX_BUILTIN_IS_SAME_AS]:
  46         Use new macro instead of __is_same_as.
  47         (is_same) [!_GLIBCXX_BUILTIN_IS_SAME_AS]: Restore partial
  48         specialization.
  49         (is_same_v) [_GLIBCXX_BUILTIN_IS_SAME_AS]: Use new macro.
  50         (is_same_v) [!_GLIBCXX_BUILTIN_IS_SAME_AS]: Use std::is_same.
  51
  52 2019-10-16  François Dumont  <fdumont@gcc.gnu.org>
  53
  54         * src/c++11/debug.cc (print_field): Replace constness_names <unknown>
  55         entry with <unknown constness>. Replace state_names <unknown> entry with
  56         <unknown state>.
  57
  58 2019-10-11  Jonathan Wakely  <jwakely@redhat.com>
  59
  60         * include/Makefile.am: Add new header.
  61         * include/Makefile.in: Regenerate.
  62         * include/precompiled/stdc++.h: Include <concepts>.
  63         * include/std/concepts: New header for C++20.
  64         * include/std/version (__cpp_lib_concepts): Define.
  65         * scripts/create_testsuite_files: Look for test files in new std
  66         directory.
  67         * testsuite/libstdc++-dg/conformance.exp: Likewise.
  68         * testsuite/std/concepts/concepts.callable/invocable.cc: New test.
  69         * testsuite/std/concepts/concepts.callable/regular_invocable.cc: New
  70         test.
  71         * testsuite/std/concepts/concepts.callable/relation.cc: New test.
  72         * testsuite/std/concepts/concepts.callable/strictweakorder.cc: New
  73         test.
  74         * testsuite/std/concepts/concepts.lang/concept.arithmetic/
  75         floating_point.cc: New test.
  76         * testsuite/std/concepts/concepts.lang/concept.arithmetic/integral.cc:
  77         New test.
  78         * testsuite/std/concepts/concepts.lang/concept.arithmetic/
  79         signed_integral.cc: New test.
  80         * testsuite/std/concepts/concepts.lang/concept.arithmetic/
  81         unsigned_integral.cc: New test.
  82         * testsuite/std/concepts/concepts.lang/concept.assignable/1.cc: New
  83         test.
  84         * testsuite/std/concepts/concepts.lang/concept.common/1.cc: New test.
  85         * testsuite/std/concepts/concepts.lang/concept.commonref/1.cc: New
  86         test.
  87         * testsuite/std/concepts/concepts.lang/concept.constructible/1.cc:
  88         New test.
  89         * testsuite/std/concepts/concepts.lang/concept.convertible/1.cc:
  90         New test.
  91         * testsuite/std/concepts/concepts.lang/concept.copyconstructible/1.cc:
  92         New test.
  93         * testsuite/std/concepts/concepts.lang/concept.defaultconstructible/
  94         1.cc: New test.
  95         * testsuite/std/concepts/concepts.lang/concept.derived/1.cc:
  96         New test.
  97         * testsuite/std/concepts/concepts.lang/concept.destructible/1.cc:
  98         New test.
  99         * testsuite/std/concepts/concepts.lang/concept.moveconstructible/1.cc:
 100         New test.
 101         * testsuite/std/concepts/concepts.lang/concept.same/1.cc:
 102         New test.
 103         * testsuite/std/concepts/concepts.lang/concept.swappable/swap.cc:
 104         New test.
 105         * testsuite/std/concepts/concepts.lang/concept.swappable/swappable.cc:
 106         New test.
 107         * testsuite/std/concepts/concepts.lang/concept.swappable/
 108         swappable_with.cc: New test.
 109         * testsuite/std/concepts/concepts.object/copyable.cc: New test.
 110         * testsuite/std/concepts/concepts.object/movable.cc: New test.
 111         * testsuite/std/concepts/concepts.object/regular.cc: New test.
 112         * testsuite/std/concepts/concepts.object/semiregular.cc: New test.
 113
 114         * include/std/type_traits (is_same): Replace partial specialization
 115         by using __is_same_as built-in in primary template.
 116         (is_same_v): Use __is_same_as built-in instead of instantiating the
 117         is_same trait.
 118
 119         PR libstdc++/92059
 120         * include/tr2/dynamic_bitset (__dynamic_bitset_base): Define all
 121         special member functions as defaulted. Add noexcept to most members.
 122         (__dynamic_bitset_base(size_t, unsigned long long, const _Alloc&)):
 123         Mask off unwanted bits in the __val parameter. Avoid undefined left
 124         shifts.
 125         (__dynamic_bitset_base::_M_assign): Remove.
 126         (__dynamic_bitset_base::_M_do_reset): Use std::fill.
 127         (__dynamic_bitset_base::_M_are_all_aux): Avoid integer promotion when
 128         block_type has lower rank than int.
 129         (dynamic_bitset): Add noexcept to most members. Use injected-class-name
 130         in return types and parameter types.
 131         (dynamic_bitset::_M_Nb): Add default member initializer.
 132         (dynamic_bitset(), dynamic_bitset(const dynamic_bitset&)): Define as
 133         defaulted.
 134         (dynamic_bitset(dynamic_bitset&&)): Clear source object after move.
 135         (dynamic_bitset::operator=(const dynamic_bitset&)): Define as
 136         defaulted.
 137         (dynamic_bitset::operator=(dynamic_bitset&&)): Add noexcept-specifier.
 138         Define without using swap, to propagate allocator correctly.
 139         (dynamic_bitset(const char*, const _Alloc&)): Use strlen.
 140         (dynamic_bitset::_M_do_sanitize, dynamic_bitset::_M_do_fill): Use
 141         casts to avoid unwanted integer promotions.
 142         (dynamic_bitset::_M_copy_from_ptr): Rearrange template parameters and
 143         add default template arguments and default argument to simplify usage.
 144         (dynamic_bitset::_M_copy_from_string): Adjust call to _M_copy_from_ptr.
 145         (operator==(const dynamic_bitset&, const dynamic_bitset&))
 146         (operator<(const dynamic_bitset&, const dynamic_bitset&)): Use _M_Nb.
 147         * include/tr2/dynamic_bitset.tcc (dynamic_bitset::_M_copy_from_ptr):
 148         Adjust template parameters to match declaration.
 149         * testsuite/tr2/dynamic_bitset/cmp.cc: New test.
 150         * testsuite/tr2/dynamic_bitset/cons.cc: New test.
 151         * testsuite/tr2/dynamic_bitset/copy.cc: New test.
 152         * testsuite/tr2/dynamic_bitset/move.cc: New test.
 153         * testsuite/tr2/dynamic_bitset/pr92059.cc: New test.
 154
 155         * include/bits/charconv.h (__to_chars_len): Avoid -Wsign-compare
 156         warnings.
 157
 158 2019-10-10  Jonathan Wakely  <jwakely@redhat.com>
 159
 160         PR libstdc++/91057
 161         * src/c++98/locale.cc [_GLIBCXX_LONG_DOUBLE_COMPAT]
 162         (find_ldbl_sync_facet): Fix parameter type and missing return.
 163
 164 2019-10-09  Marek Polacek  <polacek@redhat.com>
 165
 166         PR c++/91364 - P0388R4: Permit conversions to arrays of unknown bound.
 167         PR c++/69531 - DR 1307: Differently bounded array parameters.
 168         PR c++/88128 - DR 330: Qual convs and pointers to arrays of pointers.
 169         * testsuite/23_containers/span/lwg3255.cc: Adjust test to match the
 170         post-P0388R4 behavior.
 171
 172 2019-10-09  Jonathan Wakely  <jwakely@redhat.com>
 173
 174         PR libstdc++/91057
 175         * src/c++98/locale.cc (locale::id::_M_id()) [__GTHREADS]: Use atomic
 176         compare-exchange or double-checked lock to ensure only one thread sets
 177         the _M_index variable.
 178         [_GLIBCXX_LONG_DOUBLE_COMPAT]: Call find_ldbl_sync_facet to detect
 179         facets that share another facet's ID.
 180         [_GLIBCXX_LONG_DOUBLE_COMPAT] (find_ldbl_sync_facet): New function.
 181
 182         PR libstdc++/78552
 183         * src/c++98/locale_init.cc (locale::classic()): Do not construct a new
 184         locale object for every call.
 185         (locale::_S_initialize_once()): Construct C locale here.
 186
 187 2019-10-08  Jonathan Wakely  <jwakely@redhat.com>
 188
 189         * doc/Makefile.am (doc-html-docbook-regenerate): New target.
 190         (${docbook_outdir}/html): Do not create unused 'html/ext' directory.
 191         * doc/Makefile.in: Regenerate.
 192         * doc/xml/manual/documentation_hacking.xml: Document new target.
 193         * doc/html/*: Regenerate.
 194
 195         * doc/xml/manual/allocator.xml: Use archived copy of CUJ article.
 196         * doc/html/*: Regenerate.
 197
 198 2019-10-06  François Dumont  <fdumont@gcc.gnu.org>
 199
 200         * include/bits/stl_algo.h
 201         (__copy_n_a(_IIte, _Size, _OIte)): New.
 202         (__copy_n_a(istreambuf_iterator<>, _Size, _CharT*)): New declaration.
 203         (__copy_n(_IIte, _Size, _OIte, input_iterator_tag)): Adapt to use
 204         latter.
 205         * include/bits/streambuf_iterator.h (istreambuf_iterator<>): Declare
 206         std::__copy_n_a friend.
 207         (__copy_n_a(istreambuf_iterator<>, _Size, _CharT*)): New.
 208         * testsuite/25_algorithms/copy_n/istreambuf_iterator/1.cc: New.
 209         * testsuite/25_algorithms/copy_n/istreambuf_iterator/1_neg.cc: New.
 210         * testsuite/25_algorithms/copy_n/istreambuf_iterator/2_neg.cc: New.
 211
 212         * include/bits/stl_iterator_base_types.h (__iterator_category_t): Define
 213         for C++11.
 214         (_RequireInputIte): Likewise and use __enable_if_t.
 215         * include/std/numeric
 216         (__is_random_access_iter): Use __iterator_category_t.
 217
 218         * include/bits/stl_algo.h (copy_n): Add __glibcxx_requires_can_increment
 219         debug checks.
 220         * testsuite/25_algorithms/copy_n/debug/1_neg.cc: New.
 221         * testsuite/25_algorithms/copy_n/debug/2_neg.cc: New.
 222
 223 2019-10-04  François Dumont  <fdumont@gcc.gnu.org>
 224
 225         * include/debug/forward_list
 226         (_Sequence_traits<__debug::forward_list<>>::_S_size): Returns __dp_sign
 227         distance when not empty.
 228         * include/debug/list (_Sequence_traits<__debug::list<>>::_S_size):
 229         Likewise.
 230         * include/debug/helper_functions.h (__dp_sign_max_size): New
 231         _Distance_precision enum entry.
 232         (__valid_range_aux(_IIte, _IIte, _Distance_traits<>::__type,
 233         __false_type)): Adapt.
 234         * include/debug/safe_iterator.tcc
 235         (_Safe_iterator<>::_M_get_distance_to(const _Safe_iterator&)): Review
 236         distance computation.
 237
 238 2019-10-04  Jonathan Wakely  <jwakely@redhat.com>
 239
 240         PR libstdc++/81091
 241         PR libstdc++/91947
 242         * configure.ac: Use AC_SYS_LARGEFILE to enable 64-bit file APIs.
 243         * config.h.in: Regenerate:
 244         * configure: Regenerate:
 245         * include/Makefile.am (${host_builddir}/largefile-config.h): New
 246         target to generate config header for filesystem library.
 247         (${host_builddir}/c++config.h): Rename macros for large file support.
 248         * include/Makefile.in: Regenerate.
 249         * src/c++17/fs_dir.cc: Include new config header.
 250         * src/c++17/fs_ops.cc: Likewise.
 251         (filesystem::file_size): Use uintmax_t for size.
 252         * src/filesystem/dir.cc: Include new config header.
 253         * src/filesystem/ops.cc: Likewise.
 254         (experimental::filesystem::file_size): Use uintmax_t for size.
 255
 256         * testsuite/util/testsuite_abi.h: Use std::unordered_map instead of
 257         std::tr1::unordered_map.
 258         * testsuite/util/testsuite_allocator.h: Likewise.
 259
 260         * include/tr1/hashtable.h: Add header for __gnu_cxx::__alloc_traits.
 261
 262         * include/tr1/hashtable.h (tr1::_Hashtable::_M_allocate_node): Use
 263         __gnu_cxx::__alloc_traits for allocator construct function.
 264         (tr1::_Hashtable::_M_deallocate_node): Likewise for destroy function.
 265
 266         * include/precompiled/stdc++.h: Include <span> for C++20.
 267         * testsuite/17_intro/names.cc: Do not define 'e' for C++20.
 268
 269 2019-10-03  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 270
 271         * include/parallel/multiway_merge.h (_RAIter3): Replace _C by _Cp.
 272
 273 2019-10-02  Jonathan Wakely  <jwakely@redhat.com>
 274
 275         * config/abi/pre/gnu.ver: Tighten up greedy wildcards.
 276
 277         * doc/xml/manual/parallel_mode.xml: Add caveat about support for
 278         recent standards.
 279         * doc/html/*: Regenerate.
 280
 281 2019-10-01  Jonathan Wakely  <jwakely@redhat.com>
 282
 283         * include/experimental/algorithm (experimental::sample): Qualify call
 284         to __sample correctly.
 285         * include/parallel/algo.h (sample, for_each_n): Add using-declarations
 286         for algorithms that don't have parallel implementations.
 287
 288         * include/parallel/algobase.h (equal, lexicographical_compare): Add
 289         _GLIBCXX20_CONSTEXPR and dispatch to sequential algorithm when being
 290         constant evaluated.
 291         * include/parallel/algorithmfwd.h (equal, lexicographical_compare):
 292         Add _GLIBCXX20_CONSTEXPR.
 293
 294         * testsuite/17_intro/using_namespace_std_tr1_neg.cc: Skip test for
 295         parallel mode.
 296         * testsuite/20_util/hash/84998.cc: Likewise.
 297         * testsuite/23_containers/deque/types/pmr_typedefs_debug.cc: Likewise.
 298         * testsuite/23_containers/forward_list/pmr_typedefs_debug.cc: Likewise.
 299         * testsuite/23_containers/list/pmr_typedefs_debug.cc: Likewise.
 300         * testsuite/23_containers/map/pmr_typedefs_debug.cc: Likewise.
 301         * testsuite/23_containers/multimap/pmr_typedefs_debug.cc: Likewise.
 302         * testsuite/23_containers/multiset/pmr_typedefs_debug.cc: Likewise.
 303         * testsuite/23_containers/set/pmr_typedefs_debug.cc: Likewise.
 304         * testsuite/23_containers/unordered_map/pmr_typedefs_debug.cc:
 305         Likewise.
 306         * testsuite/23_containers/unordered_multimap/pmr_typedefs_debug.cc:
 307         Likewise.
 308         * testsuite/23_containers/unordered_multiset/pmr_typedefs_debug.cc:
 309         Likewise.
 310         * testsuite/23_containers/unordered_set/pmr_typedefs_debug.cc:
 311         Likewise.
 312         * testsuite/23_containers/vector/cons/destructible_debug_neg.cc:
 313         Likewise.
 314         * testsuite/23_containers/vector/types/pmr_typedefs_debug.cc: Likewise.
 315         * testsuite/25_algorithms/binary_search/partitioned.cc: Likewise.
 316         * testsuite/25_algorithms/copy/86658.cc: Likewise.
 317         * testsuite/25_algorithms/equal_range/partitioned.cc: Likewise.
 318         * testsuite/25_algorithms/lexicographical_compare/71545.cc: Likewise.
 319         * testsuite/25_algorithms/lower_bound/partitioned.cc: Likewise.
 320         * testsuite/25_algorithms/upper_bound/partitioned.cc: Likewise.
 321
 322         * include/parallel/algo.h: Replace non-reserved names.
 323         * include/parallel/multiway_merge.h: Likewise.
 324         * include/parallel/multiway_mergesort.h: Likewise.
 325         * include/parallel/numericfwd.h: Likewise.
 326         * testsuite/17_intro/names.cc: Add RAI to test macros.
 327
 328 2019-09-30  François Dumont  <fdumont@gcc.gnu.org>
 329
 330         * include/debug/array: Add C++20 constexpr to comparison operators.
 331         * testsuite/23_containers/array/tuple_interface/get_debug_neg.cc: Adapt
 332         dg-error line numbers.
 333         * testsuite/23_containers/array/tuple_interface/
 334         tuple_element_debug_neg.cc: Likewise.
 335
 336 2019-09-30  Andreas Tobler  <andreast@gcc.gnu.org>
 337
 338         * include/experimental/internet: Include netinet/in.h if we have
 339         _GLIBCXX_HAVE_NETINET_IN_H defined.
 340
 341         * testsuite/ext/special_functions/airy_ai/check_nan.cc: Ignore the
 342         FreeBSD warning about lower advertised precision of tgammal.
 343         * testsuite/ext/special_functions/airy_bi/check_nan.cc: Likewise.
 344         * testsuite/special_functions/07_cyl_bessel_i/check_nan.cc: Likewise.
 345         * testsuite/special_functions/08_cyl_bessel_j/check_nan.cc: Likewise.
 346         * testsuite/special_functions/09_cyl_bessel_k/check_nan.cc: Likewise.
 347         * testsuite/special_functions/10_cyl_neumann/check_nan.cc: Likewise.
 348         * testsuite/special_functions/19_sph_bessel/check_nan.cc: Likewise.
 349         * testsuite/special_functions/21_sph_neumann/check_nan.cc: Likewise.
 350         * testsuite/tr1/5_numerical_facilities/special_functions/
 351         08_cyl_bessel_i/check_nan.cc: Likewise.
 352         * testsuite/tr1/5_numerical_facilities/special_functions/
 353         09_cyl_bessel_j/check_nan.cc: Likewise.
 354         * testuite/tr1/5_numerical_facilities/special_functions/
 355         10_cyl_bessel_k/check_nan.cc: Likewise.
 356         * testsuite/tr1/5_numerical_facilities/special_functions/
 357         11_cyl_neumann/check_nan.cc: Likewise.
 358         * testsuite/tr1/5_numerical_facilities/special_functions/
 359         21_sph_bessel/check_nan.cc: Likewise.
 360         * testsuite/tr1/5_numerical_facilities/special_functions/
 361         23_sph_neumann/check_nan.cc: Likewise.
 362
 363 2019-09-30  Jonathan Wakely  <jwakely@redhat.com>
 364
 365         * include/std/span (span(element_type(&)[N]))
 366         (span(array<value_type, N>&), span(const array<value_type, N>&)):
 367         Deduce array element type to allow safe const conversions (LWG 3255).
 368         [!_GLIBCXX_P1394] (span(Container&), span(const Container&)): Use
 369         remove_cv_t on arguments to __is_std_span and __is_std_array.
 370         * testsuite/23_containers/span/lwg3255.cc: New test.
 371
 372         PR libstdc++/77936
 373         * include/parallel/checkers.h (__is_sorted): Remove unused variable.
 374
 375 2019-09-28  François Dumont  <fdumont@gcc.gnu.org>
 376
 377         * include/bits/stl_algo.h (merge): Fix documentation.
 378         * include/debug/functions.h (__check_sorted_aux): Add C++20 constexpr.
 379         (__check_sorted): Likewise and remove nested irreflexive check.
 380         (__check_sorted_set_aux, __check_sorted_set): Add C++20 constexpr.
 381         (__check_partitioned_lower, __check_partitioned_upper): Likewise.
 382         (_Irreflexive_checker::_S_is_valid): Likewise.
 383         (__is_irreflexive, __is_irreflexive_pred): Likewise.
 384         * include/debug/helper_functions.h (__get_distance): Add constexpr.
 385         (__valid_range_aux): Add C++20 constexpr.
 386         (__valid_range(_Iter, _Iter, _Distance_traits<_Iter>::__type&)):
 387         Likewise and add std::is_constant_evaluated check.
 388         (__valid_range_aux(_Iter, _Iter, std::input_iterator_tag)): New.
 389         (__valid_range_aux(_Iter, _Iter, std::random_accss_iterator_tag)): New.
 390         (__valid_range_aux(_Integral, _Integral, std::__true_type)): New,
 391         use latter.
 392         (__valid_range(_Iter, _Iter)): Adapt to use latter, add constexpr and
 393         __builtin_is_contant_evaludated check..
 394         (__can_advance, __base): Add constexpr.
 395         * include/debug/macros.h [_GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED]
 396         (_GLIBCXX_DEBUG_VERIFY_COND_AT): New.
 397         (__glibcxx_check_sorted): Use __glibcxx_check_irreflexive.
 398         (__glibcxx_check_sorted_pred): Use __glibcxx_check_irreflexive_pred.
 399         * testsuite/25_algorithms/binary_search/constexpr.cc: Use irreflexive
 400         std::less.
 401         * testsuite/25_algorithms/is_sorted/constexpr.cc: Likewise.
 402         * testsuite/25_algorithms/merge/constexpr.cc: Fix order in camm. Fix
 403         lambda to be irreflexive.
 404
 405 2019-09-27  Maciej W. Rozycki  <macro@wdc.com>
 406
 407         * configure: Regenerate.
 408
 409 2019-09-27  Jonathan Wakely  <jwakely@redhat.com>
 410
 411         PR libstdc++/91910
 412         * src/c++11/debug.cc (_Safe_iterator_base::_M_detach()): Load pointer
 413         atomically and lock the mutex before accessing the sequence.
 414         (_Safe_local_iterator_base::_M_detach()): Likewise.
 415         (_Safe_iterator_base::_M_reset()): Clear _M_sequence atomically.
 416
 417 2019-09-26  Jonathan Wakely  <jwakely@redhat.com>
 418
 419         * include/debug/array (to_array): Define for debug mode.
 420
 421         * include/bits/stl_pair.h (pair): Add _GLIBCXX20_CONSTEXPR to
 422         piecewise construction constructor, assignment operators, and swap.
 423         * include/std/tuple (pair::pair(piecewise_construct_t, tuple, tuple)):
 424         Add _GLIBCXX20_CONSTEXPR.
 425         (pair::pair(tuple, tuple, _Index_tuple, _Index_tuple)): Likewise.
 426         * testsuite/20_util/pair/constexpr_assign.cc: New test.
 427         * testsuite/20_util/pair/constexpr_swap.cc: New test.
 428
 429         * include/experimental/internet (operator==, operator<): Fix loop
 430         condition to avoid reading past the end of the array.
 431
 432         * include/std/array: Remove references to profile mode.
 433         * include/std/bitset: Likewise.
 434         * include/std/deque: Likewise.
 435         * include/std/forward_list: Likewise.
 436         * include/std/list: Likewise.
 437         * include/std/map: Likewise.
 438         * include/std/set: Likewise.
 439         * include/std/unordered_map: Likewise.
 440         * include/std/unordered_set: Likewise.
 441         * include/std/vector: Likewise.
 442         * testsuite/17_intro/headers/c++1998/profile_mode.cc: New test.
 443         * testsuite/17_intro/headers/c++2011/profile_mode.cc: New test.
 444
 445 2019-09-25  Jonathan Wakely  <jwakely@redhat.com>
 446
 447         * include/bits/regex.h
 448         (basic_regex::assign(const C*, size_t, flag_type)): Add default
 449         argument (LWG 3296).
 450         * testsuite/28_regex/basic_regex/assign/char/lwg3296.cc: New test.
 451         * testsuite/28_regex/basic_regex/assign/wchar_t/lwg3296.cc: New test.
 452
 453 2019-09-24  Jonathan Wakely  <jwakely@redhat.com>
 454
 455         * include/std/variant (variant::index()): Remove impossible case.
 456
 457         PR libstdc++/91871
 458         * testsuite/util/testsuite_hooks.h
 459         (conversion::iterator_to_const_iterator()): Do not return an invalid
 460         iterator. Test direct-initialization and direct-list-initialization
 461         as well as implicit conversion.
 462
 463 2019-09-23  Jonathan Wakely  <jwakely@redhat.com>
 464
 465         PR libstdc++/91788 (partial)
 466         * include/std/variant (variant::index()): Improve codegen for cases
 467         where conversion to size_t already works correctly.
 468
 469 2019-09-23  Andreas Schwab  <schwab@suse.de>
 470
 471         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
 472
 473 2019-09-12  Jonathan Wakely  <jwakely@redhat.com>
 474
 475         PR libstdc++/91748
 476         * include/bits/stl_algo.h (for_each_n): Fix random access iterator
 477         case.
 478         * testsuite/25_algorithms/for_each/for_each_n.cc: Test with random
 479         access iterators.
 480
 481 2019-09-11  Jonathan Wakely  <jwakely@redhat.com>
 482
 483         * python/libstdcxx/v6/xmethods.py (SharedPtrUseCountWorker.__call__):
 484         Fix syntax error.
 485
 486         * testsuite/20_util/result_of/sfinae_friendly_1.cc: Add -Wno-volatile
 487         for C++2a and up. Define HAS_52748_FIXED and fix incorrect tests.
 488         * testsuite/tr1/3_function_objects/result_of.cc: Add -Wno-volatile
 489         for C++2a and up.
 490
 491 2019-09-10  Jonathan Wakely  <jwakely@redhat.com>
 492
 493         * include/std/type_traits (__do_common_type_impl): Implement
 494         additional COND-RES(CREF(D1), CRED(D2)) condition for C++20.
 495         (basic_common_reference, common_reference, common_reference_t): Define
 496         for C++20.
 497         * testsuite/20_util/common_reference/requirements/alias_decl.cc: New
 498         test.
 499         * testsuite/20_util/common_reference/requirements/
 500         explicit_instantiation.cc: New test.
 501         * testsuite/20_util/common_reference/requirements/typedefs.cc: New
 502         test.
 503
 504         * include/std/charconv (to_chars): Rename to __to_chars_i. Define
 505         non-template overloads for each signed and unsigned integer type and
 506         char. Define deleted overload for bool (LWG 3266).
 507         * testsuite/20_util/to_chars/1_neg.cc: Remove.
 508         * testsuite/20_util/to_chars/3.cc: New test.
 509         * testsuite/20_util/to_chars/lwg3266.cc: New test.
 510
 511 2019-09-10  Christophe Lyon  <christophe.lyon@st.com>
 512
 513         * acinclude.m4: Handle uclinux*.
 514         * configure: Regenerate.
 515         * configure.host: Handle uclinux*
 516
 517 2019-09-10  Christophe Lyon  <christophe.lyon@st.com>
 518         Mickaël Guêné <mickael.guene@st.com>
 519
 520         * libsupc++/eh_personality.cc (get_ttype_entry): Add FDPIC
 521         support.
 522
 523 2019-09-10  Jonathan Wakely  <jwakely@redhat.com>
 524
 525         PR libstdc++/91711
 526         * testsuite/23_containers/span/get_neg.cc: Avoid ambiguity due to
 527         0ul being a valid null pointer constant.
 528
 529         * include/std/type_traits (__remove_cv_t): New alias template.
 530         (is_void, is_integral, is_floating_point, is_pointer)
 531         (is_member_object_pointer, is_member_function_pointer, is_null_pointer)
 532         (is_member_point), __is_signed_integer, __is_unsigned_integer)
 533         (__make_unsigned_selector, __make_signed_selector, remove_pointer)
 534         (__decay_selector): Use __remove_cv_t.
 535         (remove_cv): Add partial specializations for cv-qualified types.
 536         (__decay_t): New alias template.
 537         (__decay_and_strip, __common_type_impl, __result_of_impl): Use
 538         __decay_t.
 539         (__enable_if_t): Move earlier in the file.
 540         (_Require): Use __enable_if_t.
 541         (swap(T&, T&)): Use _Require.
 542         (swap(T(&)[N])): Use __enable_if_t.
 543
 544 2019-09-09  Edward Smith-Rowland  <3dw4rd@verizon.net>
 545
 546         Implement C++20 p1424 - 'constexpr' feature macro concerns,
 547         Issue 3256 - Feature testing macro for constexpr algorithms,
 548         and Issue 3257 - Missing feature testing macro update from P0858.
 549         * include/std/version (__cpp_lib_constexpr_algorithms): Bump value.
 550         * include/bits/algorithmfwd.h: Ditto.
 551         * include/std/utility: Ditto.
 552         * testsuite/25_algorithms/constexpr_macro.cc: Ditto.
 553         * testsuite/25_algorithms/cpp_lib_constexpr.cc: New check for
 554         __cpp_lib_constexpr macro in <algorith>.
 555         * testsuite/20_util/exchange/constexpr.cc: Add check for
 556         __cpp_lib_constexpr macro in <utility>.
 557         * testsuite/25_algorithms/adjacent_find/constexpr.cc: Remove check for
 558         __cpp_lib_constexpr_algorithms.
 559         * testsuite/25_algorithms/all_of/constexpr.cc: Ditto.
 560         * testsuite/25_algorithms/any_of/constexpr.cc: Ditto.
 561         * testsuite/25_algorithms/binary_search/constexpr.cc: Ditto.
 562         * testsuite/25_algorithms/copy/constexpr.cc: Ditto.
 563         * testsuite/25_algorithms/copy_backward/constexpr.cc: Ditto.
 564         * testsuite/25_algorithms/copy_if/constexpr.cc: Ditto.
 565         * testsuite/25_algorithms/copy_n/constexpr.cc: Ditto.
 566         * testsuite/25_algorithms/count/constexpr.cc: Ditto.
 567         * testsuite/25_algorithms/count_if/constexpr.cc: Ditto.
 568         * testsuite/25_algorithms/equal/constexpr.cc: Ditto.
 569         * testsuite/25_algorithms/equal_range/constexpr.cc: Ditto.
 570         * testsuite/25_algorithms/fill/constexpr.cc: Ditto.
 571         * testsuite/25_algorithms/fill_n/constexpr.cc: Ditto.
 572         * testsuite/25_algorithms/find/constexpr.cc: Ditto.
 573         * testsuite/25_algorithms/find_end/constexpr.cc: Ditto.
 574         * testsuite/25_algorithms/find_first_of/constexpr.cc: Ditto.
 575         * testsuite/25_algorithms/find_if/constexpr.cc: Ditto.
 576         * testsuite/25_algorithms/find_if_not/constexpr.cc: Ditto.
 577         * testsuite/25_algorithms/for_each/constexpr.cc: Ditto.
 578         * testsuite/25_algorithms/generate/constexpr.cc: Ditto.
 579         * testsuite/25_algorithms/generate_n/constexpr.cc: Ditto.
 580         * testsuite/25_algorithms/is_heap/constexpr.cc: Ditto.
 581         * testsuite/25_algorithms/is_heap_until/constexpr.cc: Ditto.
 582         * testsuite/25_algorithms/is_partitioned/constexpr.cc: Ditto.
 583         * testsuite/25_algorithms/is_permutation/constexpr.cc: Ditto.
 584         * testsuite/25_algorithms/is_sorted/constexpr.cc: Ditto.
 585         * testsuite/25_algorithms/is_sorted_until/constexpr.cc: Ditto.
 586         * testsuite/25_algorithms/lexicographical_compare/constexpr.cc: Ditto.
 587         * testsuite/25_algorithms/lower_bound/constexpr.cc: Ditto.
 588         * testsuite/25_algorithms/merge/constexpr.cc: Ditto.
 589         * testsuite/25_algorithms/mismatch/constexpr.cc: Ditto.
 590         * testsuite/25_algorithms/none_of/constexpr.cc: Ditto.
 591         * testsuite/25_algorithms/partition_copy/constexpr.cc: Ditto.
 592         * testsuite/25_algorithms/partition_point/constexpr.cc: Ditto.
 593         * testsuite/25_algorithms/remove/constexpr.cc: Ditto.
 594         * testsuite/25_algorithms/remove_copy/constexpr.cc: Ditto.
 595         * testsuite/25_algorithms/remove_copy_if/constexpr.cc: Ditto.
 596         * testsuite/25_algorithms/remove_if/constexpr.cc: Ditto.
 597         * testsuite/25_algorithms/replace_copy/constexpr.cc: Ditto.
 598         * testsuite/25_algorithms/replace_copy_if/constexpr.cc: Ditto.
 599         * testsuite/25_algorithms/replace_if/constexpr.cc: Ditto.
 600         * testsuite/25_algorithms/reverse_copy/constexpr.cc: Ditto.
 601         * testsuite/25_algorithms/rotate_copy/constexpr.cc: Ditto.
 602         * testsuite/25_algorithms/search/constexpr.cc: Ditto.
 603         * testsuite/25_algorithms/search_n/constexpr.cc: Ditto.
 604         * testsuite/25_algorithms/set_difference/constexpr.cc: Ditto.
 605         * testsuite/25_algorithms/set_intersection/constexpr.cc: Ditto.
 606         * testsuite/25_algorithms/set_symmetric_difference/constexpr.cc: Ditto.
 607         * testsuite/25_algorithms/set_union/constexpr.cc: Ditto.
 608         * testsuite/25_algorithms/transform/constexpr.cc: Ditto.
 609         * testsuite/25_algorithms/unique/constexpr.cc: Ditto.
 610         * testsuite/25_algorithms/unique_copy/constexpr.cc: Ditto.
 611         * testsuite/25_algorithms/upper_bound/constexpr.cc: Ditto.
 612
 613 2019-09-09  Edward Smith-Rowland  <3dw4rd@verizon.net>
 614
 615         Update docs for recent <span> and constexpr lib changes.
 616         * doc/xml/manual/status_cxx2020.xml: Update p0202r3, p0858r0, p0879r0,
 617         p1023r0, p1085r2 status.
 618         * doc/html/manual/status.html: Regenerate.
 619
 620 2019-09-09  Antony Polukhin  <antoshkka@gmail.com>
 621
 622         * include/bits/charconv.h (__detail::__to_chars_10_impl): Replace
 623         final offsets with constants.
 624
 625 2019-09-09  Jonathan Wakely  <jwakely@redhat.com>
 626
 627         * include/bits/range_access.h (__adl_to_address): Remove.
 628         * include/std/span (__is_base_derived_safe_convertible_v): Replace
 629         with span::__is_compatible.
 630         (__is_std_array_v): Replace with __is_std_array class template and
 631         partial specializations.
 632         (__is_std_array, __is_std_span): New class templates and partial
 633         specializations.
 634         (span::__is_compatible): New alias template for SFINAE constraints.
 635         (span::span(element_type (&)[N])): Remove redundant constraints. Do
 636         not use __adl_data to obtain a pointer.
 637         (span::span(array<value_type, N>&)): Likewise.
 638         (span::span(const array<value_type, N>&)): Likewise.
 639         [_GLIBCXX_P1394] (span::iter_reference_t, span::iterator_t)
 640         (span::iter_value_t, span::derived_from): New alias templates for
 641         SFINAE constraints, until the equivalents are supported in <concepts>
 642         and <iterator>.
 643         [_GLIBCXX_P1394] (span::__is_compatible_iterator): New alias template
 644         for SFINAE constraints.
 645         [_GLIBCXX_P1394] (span::is_compatible_range): New class template for
 646         SFINAE constraints.
 647         [_GLIBCXX_P1394] (span::span(Range&&)): Improve constraints.
 648         [_GLIBCXX_P1394] (span::span(ContiguousIterator, Sentinel)): Likewise.
 649         Use std::to_address instead of __adl_to_address.
 650         [_GLIBCXX_P1394] (span::span(ContiguousIterator, size_type)): Likewise.
 651         [!_GLIBCXX_P1394] (span::__is_compatible_container): New alias
 652         template for SFINAE constraints.
 653         [!_GLIBCXX_P1394] (span::span(Container&))
 654         (span::span(const Container&)): Improve constraints.
 655         [!_GLIBCXX_P1394] (span::span(pointer, size_type))
 656         (span::span(pointer, pointer)): Remove redundant cast of pointer.
 657         (span(const span<OType, OExtent>&)): New constructor.
 658
 659 2019-09-06  Jonathan Wakely  <jwakely@redhat.com>
 660
 661         * include/bits/range_access.h (ssize): Define for C++20.
 662         * testsuite/24_iterators/range_access_cpp20.cc: New test.
 663         * doc/xml/manual/status_cxx2020.xml: Update P1227R2 status.
 664         * doc/html/*: Regenerate.
 665
 666 2019-09-06  Florian Weimer  <fweimer@redhat.com>
 667
 668         * configure: Regenerate.
 669
 670 2019-09-05  Jonathan Wakely  <jwakely@redhat.com>
 671
 672         * doc/xml/manual/status_cxx2020.xml: Update status for P0122R7 and
 673         P1024R3. Remove entry for P0920R2.
 674         * include/std/span  (__cpp_lib_span): Change value.
 675         (__extent_storage, __extent_storage<dynamic_extent>): Remove default
 676         constructor.
 677         (span): Replace __extent_storage base class with data member.
 678         (span::_S_subspan_extent): New function.
 679         (span::empty()): Add nodiscard attribute.
 680         (span::front, span::back, span::operator[]): Check preconditions.
 681         (span::first, span::last, span::subspan): Add noexcept. Improve
 682         precondition checks (LWG 3103).
 683         (get): Remove redundant condition from static_assert.
 684         (tuple_element<I, span<T, E>>): Fix static_assert message and simplify.
 685         (as_writable_bytes): Add inline specifier.
 686         * include/std/version (__cpp_lib_span): Change value.
 687         * testsuite/23_containers/span/back_neg.cc: Remove stray semi-colon.
 688         * testsuite/23_containers/span/front_neg.cc: Likewise.
 689         * testsuite/23_containers/span/index_op_neg.cc: Likewise.
 690         * testsuite/23_containers/span/last_neg.cc: Improve test.
 691         * testsuite/23_containers/span/subspan_neg.cc: Likewise.
 692         * testsuite/23_containers/span/1.cc: New test.
 693         * testsuite/23_containers/span/2.cc: New test.
 694         * testsuite/23_containers/span/back_assert_neg.cc: New test.
 695         * testsuite/23_containers/span/first_2_assert_neg.cc: New test.
 696         * testsuite/23_containers/span/first_assert_neg.cc: New test.
 697         * testsuite/23_containers/span/first_neg.cc: New test.
 698         * testsuite/23_containers/span/front_assert_neg.cc: New test.
 699         * testsuite/23_containers/span/index_op_assert_neg.cc: New test.
 700         * testsuite/23_containers/span/last_2_assert_neg.cc: New test.
 701         * testsuite/23_containers/span/last_assert_neg.cc: New test.
 702         * testsuite/23_containers/span/subspan_2_assert_neg.cc: New test.
 703         * testsuite/23_containers/span/subspan_3_assert_neg.cc: New test.
 704         * testsuite/23_containers/span/subspan_4_assert_neg.cc: New test.
 705         * testsuite/23_containers/span/subspan_5_assert_neg.cc: New test.
 706         * testsuite/23_containers/span/subspan_6_assert_neg.cc: New test.
 707         * testsuite/23_containers/span/subspan_assert_neg.cc: New test.
 708
 709 2019-09-05  JeanHeyd Meneide  <phdofthehouse@gmail.com>
 710
 711         * include/Makefile.am: Add <span> header.
 712         * include/Makefile.in: Regenerate.
 713         * include/bits/range_access.h (__adl_begin, __adl_end, __adl_cbegin)
 714         (__adl_cend, __adl_rbegin, __adl_rend, __adl_crbegin, __adl_crend)
 715         (__adl_data, __adl_cdata, __adl_size, __adl_empty, __adl_to_address):
 716         New functions for performing argument-dependent lookup of range
 717         customization points.
 718         * include/bits/stl_iterator.h (__normal_iterator): Add
 719         _GLIBCXX20_CONSTEXPR to all functions.
 720         * include/std/span: New header.
 721         * include/std/version (__cpp_lib_span): Define feature test macro.
 722         * testsuite/23_containers/span/contiguous_range_neg.cc: New test.
 723         * testsuite/23_containers/span/everything.cc: New test.
 724         * testsuite/23_containers/span/get_neg.cc: New test.
 725         * testsuite/23_containers/span/last_neg.cc: New test.
 726         * testsuite/23_containers/span/subspan_neg.cc: New test.
 727         * testsuite/23_containers/span/tuple_element_dynamic_neg.cc: New test.
 728         * testsuite/23_containers/span/tuple_element_oob_neg.cc: New test.
 729         * testsuite/23_containers/span/tuple_size_neg.cc: New test.
 730
 731 2019-09-05  Jonathan Wakely  <jwakely@redhat.com>
 732
 733         * doc/xml/manual/allocator.xml: Remove URL for bibliography entry.
 734         * doc/html/*: Regenerate.
 735
 736 2019-09-04  Mike Crowe  <mac@mcrowe.com>
 737
 738         PR libstdc++/41861
 739         * acinclude.m4 (GLIBCXX_CHECK_PTHREAD_COND_CLOCKWAIT): Check for new
 740         pthread_cond_clockwait function.
 741         * configure.ac: Use GLIBCXX_CHECK_PTHREAD_COND_CLOCKWAIT.
 742         * configure: Regenerate.
 743         * config.h.in: Regenerate.
 744         * include/std/condition_variable: (condition_variable): Rename
 745         __steady_clock_t typedef and add system_clock. Change __clock_t to be
 746         a typedef for the preferred clock to convert arbitrary other clocks to.
 747         [_GLIBCXX_USE_PTHREAD_COND_CLOCKWAIT] (wait_until): Add a steady_clock
 748         overload.
 749         (wait_until): Change __clock_t overload to use system_clock.
 750         [_GLIBCXX_USE_PTHREAD_COND_CLOCKWAIT] (__wait_until_impl): Add
 751         steady_clock overload that calls pthread_cond_clockwait.
 752         (__wait_until_impl): Change __clock_t overload to use system_clock.
 753         (condition_variable_any) [_GLIBCXX_USE_PTHREAD_COND_CLOCKWAIT]: Use
 754         steady_clock for __clock_t if pthread_cond_clockwait is available.
 755
 756 2019-09-04  Mike Crowe  <mac@mcrowe.com>
 757
 758         * testsuite/30_threads/condition_variable/members/2.cc (test01):
 759         Parameterise so that test can be run against an arbitrary clock.
 760         (main): Test using std::chrono::steady_clock and a user-defined
 761         clock in addition to the previous std::chrono::system_clock.
 762         * testsuite/30_threads/condition_variable_any/members/2.cc: Likewise.
 763
 764 2019-09-03  Ulrich Weigand  <uweigand@de.ibm.com>
 765
 766         * crossconfig.m4: Remove references to spu.
 767         * configure: Regenerate.
 768         * doc/xml/manual/appendix_contributing.xml: Remove references
 769         to __ea as "badword" for spu.
 770         * doc/html/manual/source_code_style.html: Regenerate.
 771         * include/tr1/ell_integral.tcc (__ellint_rd): Do not attempt
 772         to avoid __ea (as "badword" for spu).
 773         (__ellint_rj): Likewise.
 774
 775 2019-09-03  Chung-Lin Tang  <cltang@codesourcery.com>
 776
 777         PR other/79543
 778         * acinclude.m4 (GLIBCXX_CHECK_LINKER_FEATURES): Fix GNU ld --version
 779         scanning to conform to the GNU Coding Standards.
 780         * configure: Regenerate.
 781
 782 2019-09-02  Jonathan Wakely  <jwakely@redhat.com>
 783
 784         * src/c++17/memory_resource.cc: Use __constinit keyword.
 785
 786 2019-09-02  Jonathan Wakely  <jwakely@redhat.com>
 787
 788         * doc/xml/manual/abi.xml: Document 9.x library versions.
 789         * doc/html/*: Regenerate.
 790
 791 2019-09-02  Jonathan Wakely  <jwakely@redhat.com>
 792
 793         * include/std/charconv (__detail::__to_chars_2_len): Use std::log2p1.
 794         (__detail::__to_chars_8_len): Remove.
 795         (__detail::__to_chars_8): Inline length calculation here.
 796         (__detail::__from_chars_binary): Use numeric_limits instead of
 797         CHAR_BIT.
 798
 799 2019-09-02  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 800
 801         * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
 802         * config/abi/post/i386-solaris/amd64/baseline_symbols.txt: Likewise.
 803         * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
 804         * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
 805         Likewise.
 806
 807 2019-09-01  François Dumont  <fdumont@gcc.gnu.org>
 808
 809         * testsuite_files/util/testsuite_performance.h
 810         (resource_counter::start): Ignore unused malloc(0) result.
 811
 812 2019-09-01  Gerald Pfeifer  <gerald@pfeifer.com>
 813
 814         * doc/xml/manual/policy_data_structures_biblio.xml (COM: Component
 815         Model Object Technologies): Adjust name and link.
 816
 817 2019-08-30  Antony Polukhin  <antoshkka@gmail.com>
 818
 819         * include/std/charconv (__detail::__to_chars_8)
 820         __detail::__to_chars_16): Replace array of precomputed digits with
 821         arithmetic operations to avoid CPU cache misses. Remove zero
 822         termination from array of digits to allow symbol merge with generic
 823         implementation of __detail::__to_chars. Replace final offsets with
 824         constants. Use __detail::__to_chars_len_2 instead of a generic
 825         __detail::__to_chars_len.
 826         (__detail::__to_chars): Remove zero termination from array of digits.
 827         (__detail::__to_chars_2): Leading digit is always '1'.
 828
 829 2019-08-30  Jonathan Wakely  <jwakely@redhat.com>
 830
 831         * testsuite/23_containers/vector/cons/89164_c++17.cc: Fix errors.
 832
 833 2019-08-30  Uros Bizjak  <ubizjak@gmail.com>
 834
 835         * config/abi/post/alpha-linux-gnu/baseline_symbols.txt: Update.
 836
 837 2019-08-30  Jonathan Wakely  <jwakely@redhat.com>
 838
 839         PR libstdc++/89164
 840         * include/bits/stl_algobase.h (__copy_move): Give descriptive names
 841         to template parameters.
 842         * include/bits/stl_uninitialized.h (uninitialized_copy)
 843         (uninitialized_fill, uninitialized_fill_n): Add static assertions to
 844         diagnose invalid uses.
 845         * testsuite/20_util/specialized_algorithms/uninitialized_copy/1.cc:
 846         Adjust expected error.
 847         * testsuite/20_util/specialized_algorithms/uninitialized_copy/89164.cc:
 848         New test.
 849         * testsuite/20_util/specialized_algorithms/uninitialized_copy_n/
 850         89164.cc: New test.
 851         * testsuite/20_util/specialized_algorithms/uninitialized_fill/89164.cc:
 852         New test.
 853         * testsuite/20_util/specialized_algorithms/uninitialized_fill_n/
 854         89164.cc: New test.
 855         * testsuite/23_containers/vector/cons/89164.cc: New test.
 856         * testsuite/23_containers/vector/cons/89164_c++17.cc: New test.
 857
 858 2019-08-29  Jonathan Wakely  <jwakely@redhat.com>
 859
 860         PR libstdc++/91067
 861         * acinclude.m4 (libtool_VERSION): Bump to 6:28:0.
 862         * configure: Regenerate.
 863         * config/abi/pre/gnu.ver (GLIBCXX_3.4.28): Add new version. Export
 864         missing symbols.
 865         * testsuite/27_io/filesystem/iterators/91067.cc: Test move
 866         constructors.
 867         * testsuite/util/testsuite_abi.cc: Add new symbol version.
 868
 869 2019-08-29  Jakub Jelinek  <jakub@redhat.com>
 870
 871         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
 872         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
 873
 874 2019-08-28  Jonathan Wakely  <jwakely@redhat.com>
 875
 876         * config/abi/post/i386-linux-gnu/baseline_symbols.txt: Update.
 877         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
 878         * config/abi/post/powerpc-linux-gnu/baseline_symbols.txt: Update.
 879         * config/abi/post/powerpc64-linux-gnu/32/baseline_symbols.txt: Update.
 880         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
 881         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
 882         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
 883
 884 2019-08-23  Joseph Myers  <joseph@codesourcery.com>
 885
 886         * src/filesystem/ops-common.h [_GLIBCXX_FILESYSTEM_IS_WINDOWS]
 887         (std::filesystem::__gnu_posix::lstat): Add return type.
 888
 889 2019-08-20  Jonathan Wakely  <jwakely@redhat.com>
 890
 891         * doc/doxygen/user.cfg.in (INPUT): Remove profile mode headers.
 892
 893         * include/std/numeric (reduce): Fix Doxygen markup.
 894
 895         PR libstdc++/91371
 896         * include/std/type_traits (is_function): Simplify definition. Remove
 897         partial specializations for function types.
 898         (__is_referenceable): Simplify definition.
 899         * testsuite/20_util/bind/91371.cc: New test.
 900         * testsuite/20_util/is_function/91371.cc: New test.
 901         * testsuite/20_util/is_function/value.cc: Check more pointer types.
 902         * testsuite/20_util/is_member_function_pointer/91371.cc: New test.
 903         * testsuite/20_util/is_object/91371.cc: New test.
 904
 905 2019-08-16  Uros Bizjak  <ubizjak@gmail.com>
 906
 907         * config/abi/post/alpha-linux-gnu/baseline_symbols.txt: Update.
 908
 909 2019-08-15  Jonathan Wakely  <jwakely@redhat.com>
 910
 911         PR libstdc++/91456
 912         * include/bits/std_function.h (__check_func_return_type): Remove.
 913         (function::_Callable): Use std::__is_invocable_impl instead of
 914         __check_func_return_type.
 915         * include/std/type_traits (__is_invocable_impl): Add another defaulted
 916         template parameter. Define a separate partial specialization for
 917         INVOKE and INVOKE<void>. For INVOKE<R> replace is_convertible check
 918         with a check that models delayed temporary materialization.
 919         * testsuite/20_util/function/91456.cc: New test.
 920         * testsuite/20_util/is_invocable/91456.cc: New test.
 921
 922 2019-08-14  Jonathan Wakely  <jwakely@redhat.com>
 923
 924         * include/std/type_traits (__is_nullptr_t): Add deprecated attribute.
 925
 926 2019-08-14  Edward Smith-Rowland  <3dw4rd@verizon.net>
 927
 928         Implement C++20 p0879 - Constexpr for swap and swap related functions.
 929         * include/std/version (__cpp_lib_constexpr_swap_algorithms): New macro.
 930         * include/bits/algorithmfwd.h (__cpp_lib_constexpr_swap_algorithms):
 931         New macro.
 932         (iter_swap, make_heap, next_permutation, partial_sort_copy, pop_heap)
 933         (prev_permutation, push_heap, reverse, rotate, sort_heap, swap)
 934         (swap_ranges, nth_element, partial_sort, sort): Add constexpr.
 935         * include/bits/move.h (swap): Add constexpr.
 936         * include/bits/stl_algo.h (__move_median_to_first, __reverse, reverse)
 937         (__gcd, __rotate, rotate, __partition, __heap_select)
 938         (__partial_sort_copy, partial_sort_copy, __unguarded_partition)
 939         (__unguarded_partition_pivot, __partial_sort, __introsort_loop, __sort)
 940         (__introselect, __chunk_insertion_sort, next_permutation)
 941         (prev_permutation, partition, partial_sort, nth_element, sort)
 942         (__iter_swap::iter_swap, iter_swap, swap_ranges): Add constexpr.
 943         * include/bits/stl_algobase.h (__iter_swap::iter_swap, iter_swap)
 944         (swap_ranges): Add constexpr.
 945         * include/bits/stl_heap.h (__push_heap, push_heap, __adjust_heap,
 946         __pop_heap, pop_heap, __make_heap, make_heap, __sort_heap, sort_heap):
 947         Add constexpr.
 948         * include/std/type_traits (swap): Add constexpr.
 949         * testsuite/25_algorithms/headers/algorithm/synopsis.cc: Add constexpr.
 950         * testsuite/25_algorithms/iter_swap/constexpr.cc: New test.
 951         * testsuite/25_algorithms/make_heap/constexpr.cc: New test.
 952         * testsuite/25_algorithms/next_permutation/constexpr.cc: New test.
 953         * testsuite/25_algorithms/nth_element/constexpr.cc: New test.
 954         * testsuite/25_algorithms/partial_sort/constexpr.cc: New test.
 955         * testsuite/25_algorithms/partial_sort_copy/constexpr.cc: New test.
 956         * testsuite/25_algorithms/partition/constexpr.cc: New test.
 957         * testsuite/25_algorithms/pop_heap/constexpr.cc: New test.
 958         * testsuite/25_algorithms/prev_permutation/constexpr.cc: New test.
 959         * testsuite/25_algorithms/push_heap/constexpr.cc: New test.
 960         * testsuite/25_algorithms/reverse/constexpr.cc: New test.
 961         * testsuite/25_algorithms/rotate/constexpr.cc: New test.
 962         * testsuite/25_algorithms/sort/constexpr.cc: New test.
 963         * testsuite/25_algorithms/sort_heap/constexpr.cc: New test.
 964         * testsuite/25_algorithms/swap/constexpr.cc: New test.
 965         * testsuite/25_algorithms/swap_ranges/constexpr.cc: New test.
 966
 967 2019-08-12  Jonathan Wakely  <jwakely@redhat.com>
 968
 969         PR libstdc++/90361
 970         * src/c++17/string-inst.cc: Use _GLIBCXX_USE_CXX11_ABI=1 by default.
 971
 972         * include/std/tuple (__unpack_std_tuple): New variable template and
 973         partial specializations.
 974         (apply, make_from_tuple): Add noexcept-specifier.
 975         * testsuite/20_util/tuple/apply/2.cc: New test.
 976         * testsuite/20_util/tuple/make_from_tuple/2.cc: New test.
 977
 978 2019-08-09  Corentin Gay  <gay@adacore.com>
 979
 980         * testsuite/ext/random/beta_distribution/operators/serialize.cc,
 981         testsuite/ext/random/hypergeometric_distribution/operators/serialize.cc,
 982         testsuite/ext/random/normal_mv_distribution/operators/serialize.cc,
 983         testsuite/ext/random/triangular_distribution/operators/serialize.cc,
 984         testsuite/ext/random/von_mises_distribution/operators/serialize.cc:
 985         Add call to `VERIFY`.
 986
 987 2019-08-09  Alexandre Oliva <oliva@adacore.com>
 988
 989         * include/ext/random
 990         (normal_mv_distribution::param_type::param_type): New private
 991         ctor taking a decomposed varcov matrix, for use by...
 992         (operator>>): ... this, befriended.
 993         * include/ext/random.tcc (operator>>): Use it.
 994         (normal_mv_distribution::param_type::_M_init_lower): Adjust
 995         member function name in exception message.
 996
 997 2019-08-08  Jonathan Wakely  <jwakely@redhat.com>
 998
 999         P0325R4 to_array from LFTS with updates
1000         * include/experimental/array (to_array): Qualify call to __to_array.
1001         * include/std/array (__cpp_lib_to_array, to_array): Define for C++20.
1002         * include/std/version (__cpp_lib_to_array): Likewise.
1003         * testsuite/23_containers/array/creation/1.cc: New test.
1004         * testsuite/23_containers/array/creation/2.cc: New test.
1005         * testsuite/23_containers/array/creation/3_neg.cc: New test.
1006         * testsuite/23_containers/array/tuple_interface/tuple_element_neg.cc:
1007         Use zero for dg-error line number.
1008
1009 2019-08-06  Jonathan Wakely  <jwakely@redhat.com>
1010
1011         P1651R0 bind_front should not unwrap reference_wrapper
1012         * include/std/functional (bind_front): Don't unwrap reference_wrapper.
1013         * include/std/version (__cpp_lib_bind_front): Update value.
1014         * testsuite/20_util/function_objects/bind_front/1.cc: Fix test for
1015         feature test macro.
1016         * testsuite/20_util/function_objects/bind_front/2.cc: New test.
1017
1018         * include/std/numbers [!__STRICT_ANSI__ && _GLIBCXX_USE_FLOAT128]
1019         (e_v, log2e_v, log10e_v, pi_v, inv_pi_v, inv_sqrtpi_v, ln2_v, ln10_v)
1020         (sqrt2_v, sqrt3_v, inv_sqrt3, egamma_v, phi_v): Add explicit
1021         specializations for __float128.
1022         * testsuite/26_numerics/numbers/float128.cc: New test.
1023
1024 2019-08-04  Gerald Pfeifer  <gerald@pfeifer.com>
1025
1026         * doc/xml/manual/documentation_hacking.xml: doxygen.org is now
1027         doxygen.nl.
1028
1029 2019-08-01  Edward Smith-Rowland  <3dw4rd@verizon.net>
1030
1031         Implement C++20 p0202 - Add Constexpr Modifiers to Functions
1032         in <algorithm> and <utility> Headers.
1033         Implement C++20 p1023 - constexpr comparison operators for std::array.
1034         * include/bits/algorithmfwd.h (all_of, any_of, binary_search, copy,
1035         copy_backward, copy_if, copy_n, equal_range, fill, find_end,
1036         find_if_not, includes, is_heap, is_heap_until, is_partitioned,
1037         is_permutation, is_sorted, is_sorted_until, iter_swap, lower_bound,
1038         none_of, partition_copy, partition_point, remove, remove_if,
1039         remove_copy, remove_copy_if, replace_copy, replace_copy_if,
1040         reverse_copy, rotate_copy, uunique, upper_bound, adjacent_find, count,
1041         count_if, equal, find, find_first_of, find_if, for_each, generate,
1042         generate_n, lexicographical_compare, merge, mismatch, replace,
1043         replace_if, search, search_n, set_difference, set_intersection,
1044         set_symmetric_difference, set_union, transform, unique_copy):
1045         Mark constexpr.
1046         * include/bits/cpp_type_traits.h (__miter_base): Mark constexpr.
1047         * include/bits/predefined_ops.h (_Iter_less_val::operator(),
1048         _Val_less_iter::operator(), _Iter_equal_to_iter::operator(),
1049         _Iter_equal_to_val::operator(), _Iter_equals_val::operator()):
1050          Use const ref instead of ref arg;
1051         (_Iter_less_val, __iter_less_val, _Val_less_iter, __val_less_iter,
1052         __iter_equal_to_iter, __iter_equal_to_val, __iter_comp_val,
1053         _Iter_comp_val, _Val_comp_iter, __val_comp_iter, __iter_equals_val,
1054         _Iter_equals_iter, __iter_comp_iter, _Iter_pred, __pred_iter,
1055         _Iter_comp_to_val, __iter_comp_val, _Iter_comp_to_iter,
1056         __iter_comp_iter): Mark constexpr.
1057         * include/bits/stl_algo.h (__find_if, __find_if_not, __find_if_not_n,
1058         __search, __search_n_aux, __search_n, __find_end, find_end, all_of,
1059         none_of, any_of, find_if_not, is_partitioned, partition_point,
1060         __remove_copy_if, remove_copy, remove_copy_if, copy_if, __copy_n,
1061         copy_n, partition_copy, __remove_if, remove, remove_if, __adjacent_find,
1062         __unique, unique, __unique_copy, reverse_copy, rotate_copy,
1063         __unguarded_linear_insert, __insertion_sort, __unguarded_insertion_sort,
1064         __final_insertion_sort, lower_bound, __upper_bound, upper_bound,
1065         __equal_range, equal_range, binary_search, __includes, includes,
1066         __next_permutation, __prev_permutation, __replace_copy_if, replace_copy,
1067         replace_copy_if, __count_if, is_sorted, __is_sorted_until,
1068         is_sorted_until, __is_permutation, is_permutation, for_each, find,
1069         find_if, find_first_of, adjacent_find, count, count_if, search,
1070         search_n, transform, replace, replace_if, generate, generate_n,
1071         unique_copy, __merge, merge, __set_union, set_union, __set_intersection,
1072         set_intersection, __set_difference, set_difference,
1073         __set_symmetric_difference, set_symmetric_difference):  Mark constexpr.
1074         * include/bits/stl_algobase.h (__memmove, __memcmp): New maybe constexpr
1075         wrappers around __builtin_memmove and __builtin_memcmp
1076         respectively;
1077         (__niter_base, __niter_wrap, __copy_m, __copy_move_a, __copy_move_a2,
1078         copy, move, __copy_move_b, __copy_move_backward_a,
1079         __copy_move_backward_a2, copy_backward, move_backward, __fill_a, fill,
1080         __fill_n_a, fill_n, equal, __lc_rai::__newlast1, __lc_rai::__cnd2,
1081         __lexicographical_compare_impl, __lexicographical_compare,
1082         __lexicographical_compare<true>::__lc, __lexicographical_compare_aux,
1083         __lower_bound, lower_bound, equal, __equal4, lexicographical_compare,
1084         __mismatch, mismatch, __is_heap_until, __is_heap, is_heap_until,
1085         is_heap): Mark constexpr.
1086         * include/bits/stl_heap.h (__is_heap_until, __is_heap, is_heap_until,
1087         is_heap): Mark constexpr.
1088         * include/bits/stl_iterator.h (__niter_base, __miter_base): Mark constexpr.
1089         * include/std/array: Make comparison ops constexpr.
1090         * include/std/utility: Make exchange constexpr.
1091         * include/std/version (__cpp_lib_constexpr_algorithms): New macro.
1092         * testsuite/23_containers/array/tuple_interface/get_neg.cc: Adjust.
1093         * testsuite/23_containers/array/tuple_interface/
1094         tuple_element_neg.cc: Adjust.
1095         * testsuite/20_util/exchange/constexpr.cc: New.
1096         * testsuite/23_containers/array/comparison_operators/constexpr.cc: New.
1097         * testsuite/25_algorithms/constexpr_macro.cc: New.
1098         * testsuite/25_algorithms/adjacent_find/constexpr.cc: New.
1099         * testsuite/25_algorithms/all_of/constexpr.cc: New.
1100         * testsuite/25_algorithms/any_of/constexpr.cc: New.
1101         * testsuite/25_algorithms/binary_search/constexpr.cc: New.
1102         * testsuite/25_algorithms/copy/constexpr.cc: New.
1103         * testsuite/25_algorithms/copy_backward/constexpr.cc: New.
1104         * testsuite/25_algorithms/copy_if/constexpr.cc: New.
1105         * testsuite/25_algorithms/copy_n/constexpr.cc: New.
1106         * testsuite/25_algorithms/count/constexpr.cc: New.
1107         * testsuite/25_algorithms/count_if/constexpr.cc: New.
1108         * testsuite/25_algorithms/equal/constexpr.cc: New.
1109         * testsuite/25_algorithms/equal_range/constexpr.cc: New.
1110         * testsuite/25_algorithms/fill/constexpr.cc: New.
1111         * testsuite/25_algorithms/fill_n/constexpr.cc: New.
1112         * testsuite/25_algorithms/find/constexpr.cc: New.
1113         * testsuite/25_algorithms/find_end/constexpr.cc: New.
1114         * testsuite/25_algorithms/find_first_of/constexpr.cc: New.
1115         * testsuite/25_algorithms/find_if/constexpr.cc: New.
1116         * testsuite/25_algorithms/find_if_not/constexpr.cc: New.
1117         * testsuite/25_algorithms/for_each/constexpr.cc: New.
1118         * testsuite/25_algorithms/generate/constexpr.cc: New.
1119         * testsuite/25_algorithms/generate_n/constexpr.cc: New.
1120         * testsuite/25_algorithms/is_heap/constexpr.cc: New.
1121         * testsuite/25_algorithms/is_heap_until/constexpr.cc: New.
1122         * testsuite/25_algorithms/is_partitioned/constexpr.cc: New.
1123         * testsuite/25_algorithms/is_permutation/constexpr.cc: New.
1124         * testsuite/25_algorithms/is_sorted/constexpr.cc: New.
1125         * testsuite/25_algorithms/is_sorted_until/constexpr.cc: New.
1126         * testsuite/25_algorithms/lexicographical_compare/constexpr.cc: New.
1127         * testsuite/25_algorithms/lower_bound/constexpr.cc: New.
1128         * testsuite/25_algorithms/merge/constexpr.cc: New.
1129         * testsuite/25_algorithms/mismatch/constexpr.cc: New.
1130         * testsuite/25_algorithms/none_of/constexpr.cc: New.
1131         * testsuite/25_algorithms/partition_copy/constexpr.cc: New.
1132         * testsuite/25_algorithms/partition_point/constexpr.cc: New.
1133         * testsuite/25_algorithms/remove/constexpr.cc: New.
1134         * testsuite/25_algorithms/remove_copy/constexpr.cc: New.
1135         * testsuite/25_algorithms/remove_copy_if/constexpr.cc: New.
1136         * testsuite/25_algorithms/remove_if/constexpr.cc: New.
1137         * testsuite/25_algorithms/replace_copy/constexpr.cc: New.
1138         * testsuite/25_algorithms/replace_copy_if/constexpr.cc: New.
1139         * testsuite/25_algorithms/replace_if/constexpr.cc: New.
1140         * testsuite/25_algorithms/reverse_copy/constexpr.cc: New.
1141         * testsuite/25_algorithms/rotate_copy/constexpr.cc: New.
1142         * testsuite/25_algorithms/search/constexpr.cc: New.
1143         * testsuite/25_algorithms/search_n/constexpr.cc: New.
1144         * testsuite/25_algorithms/set_difference/constexpr.cc: New.
1145         * testsuite/25_algorithms/set_intersection/constexpr.cc: New.
1146         * testsuite/25_algorithms/set_symmetric_difference/constexpr.cc: New.
1147         * testsuite/25_algorithms/set_union/constexpr.cc: New.
1148         * testsuite/25_algorithms/transform/constexpr.cc: New.
1149         * testsuite/25_algorithms/unique/constexpr.cc: New.
1150         * testsuite/25_algorithms/unique_copy/constexpr.cc: New.
1151         * testsuite/25_algorithms/upper_bound/constexpr.cc: New.
1152
1153 2019-07-31  Jonathan Wakely  <jwakely@redhat.com>
1154
1155         * include/std/memory (make_obj_using_allocator): Qualify call to
1156         uses_allocator_construction_args.
1157
1158         P0631R4 Math Constants
1159         * include/Makefile.am: Add new header.
1160         * include/Makefile.in: Regenerate.
1161         * include/precompiled/stdc++.h: Include new header.
1162         * include/std/numbers: New header.
1163         * include/std/version (__cpp_lib_math_constants): Define.
1164         * testsuite/26_numerics/numbers/1.cc: New test.
1165         * testsuite/26_numerics/numbers/2.cc: New test.
1166         * testsuite/26_numerics/numbers/3.cc: New test.
1167         * testsuite/26_numerics/numbers/nonfloat_neg.cc: New test.
1168
1169         * include/std/bit: Add Doxygen comments.
1170
1171         PR libstdc++/91308
1172         * include/bits/unique_ptr.h (unique_ptr::__safe_conversion_up): Remove
1173         constraints on deleter that should only apply to the constructor.
1174         (unique_ptr<T[], D>::__safe_conversion_up): Likewise.
1175         (unique_ptr<T[], D>::unique_ptr(unique_ptr<U, D>&&)): Restore
1176         constraints on deleter here.
1177         * testsuite/20_util/unique_ptr/assign/91308.cc: New test.
1178
1179 2019-07-29  Jonathan Wakely  <jwakely@redhat.com>
1180
1181         PR libstdc++/51333
1182         * libsupc++/cxxabi.h (__gnu_cxx::recursive_init_error): Do not define
1183         constructor inline.
1184         * libsupc++/guard_error.cc (__gnu_cxx::recursive_init_error): Define
1185         constructor.
1186         * testsuite/18_support/51333.cc: New test.
1187
1188 2019-07-28  Gerald Pfeifer  <gerald@pfeifer.com>
1189
1190         * doc/xml/manual/documentation_hacking.xml: Fix broken reference
1191         to the Doxygen manual. Avoid a "here" link on the way.
1192         Fix another broken link to Doxygen docblocks.
1193
1194 2019-07-26  Jonathan Wakely  <jwakely@redhat.com>
1195
1196         * include/std/bit (__cpp_lib_endian): Define.
1197         * include/std/version (__cpp_lib_endian): Define.
1198         * testsuite/26_numerics/endian/2.cc: New.
1199         * testsuite/26_numerics/endian/3.cc: New.
1200         * testsuite/26_numerics/endian/4.cc: New.
1201
1202 2019-07-26  François Dumont  <fdumont@gcc.gnu.org>
1203
1204         * testsuite/util/testsuite_iterators.h
1205         (bidirectional_iterator_wrapper): Fix type comment.
1206         (random_access_iterator_wrapper): Likewise.
1207
1208 2019-07-25  Jonathan Wakely  <jwakely@redhat.com>
1209
1210         * include/std/bit (endian): Move definition here as per P1612R1.
1211         * include/std/type_traits (endian): Remove definition from here.
1212         * testsuite/20_util/endian/1.cc: Rename to ...
1213         * testsuite/26_numerics/endian/1.cc: ... here. Adjust header.
1214
1215 2019-07-25  Martin Liska  <mliska@suse.cz>
1216             Dominik Infuhr  <dominik.infuehr@theobroma-systems.com>
1217
1218         PR c++/23383
1219         * testsuite/ext/bitmap_allocator/check_delete.cc: Add
1220         -fno-allocation-dce.
1221         * testsuite/ext/bitmap_allocator/check_new.cc: Likewise.
1222         * testsuite/ext/new_allocator/check_delete.cc: Likewise.
1223         * testsuite/ext/new_allocator/check_new.cc: Likewise.
1224
1225 2019-07-22  Jonathan Wakely  <jwakely@redhat.com>
1226
1227         * testsuite/26_numerics/bit/bitops.count/*: Rename to ...
1228         * testsuite/26_numerics/bit/bit.count/*: Here.
1229
1230         * include/std/bit (__rotl, __rotr): Change second parameter from
1231         unsigned int to int and handle negative values.
1232         (rotl, rotr): Remove check for __STRICT_ANSI__. Change second
1233         parameter from unsigned int to int. Add nodiscard attribute.
1234         * testsuite/26_numerics/bit/bitops.rot/rotl.cc: Rename to ...
1235         * testsuite/26_numerics/bit/bit.rotate/rotl.cc: Here. Test negative
1236         shifts.
1237         * testsuite/26_numerics/bit/bitops.rot/rotr.cc: Rename to ...
1238         * testsuite/26_numerics/bit/bit.rotate/rotr.cc: Here. Test negative
1239         shifts.
1240
1241         * include/std/bit (__ceil2): Make unrepresentable results undefined,
1242         as per P1355R2. Add debug assertion. Perform one left shift, not two,
1243         so that out of range values cause undefined behaviour. Ensure that
1244         shift will still be undefined if left operand is promoted.
1245         * testsuite/26_numerics/bit/bit.pow.two/ceil2.cc: Replace checks for
1246         unrepresentable values with checks that they are not core constant
1247         expressions.
1248         * testsuite/26_numerics/bit/bit.pow.two/ceil2_neg.cc: New test.
1249
1250 2019-07-19  François Dumont  <fdumont@gcc.gnu.org>
1251
1252         * include/bits/stl_tempbuf.h (__detail::__return_temporary_buffer): Fix
1253         sized deallocation size computation.
1254
1255 2019-07-19  Andreas Schwab  <schwab@linux-m68k.org>
1256
1257         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
1258
1259 2019-07-18  François Dumont  <fdumont@gcc.gnu.org>
1260
1261         * include/bits/stl_tempbuf.h (__detail::__return_temporary_buffer): New.
1262         (~_Temporary_buffer()): Use latter.
1263         (_Temporary_buffer(_FIterator, size_type)): Likewise.
1264
1265 2019-07-17  Andreas Schwab  <schwab@suse.de>
1266
1267         * config/abi/post/ia64-linux-gnu/baseline_symbols.txt: Update.
1268
1269 2019-07-16  Jason Merrill  <jason@redhat.com>
1270
1271         * include/std/memory (uses_allocator_construction_args): Add parens
1272         around constraint.
1273
1274 2019-07-12  Jonathan Wakely  <jwakely@redhat.com>
1275
1276         * testsuite/29_atomics/atomic_float/1.cc: Fix comment.
1277
1278         * include/experimental/string_view (__detail::__idt): Remove.
1279         (operator==, operator!=, operator<, operator>, operator<=, operator>=):
1280         Use __type_identity_t instead of __detail::__idt;
1281         * include/std/string_view (__detail::__idt): Remove.
1282         (operator==, operator!=, operator<, operator>, operator<=, operator>=):
1283         Use __type_identity_t instead of __detail::__idt;
1284         * include/std/type_traits (__type_identity_t): New alias template.
1285
1286         * doc/xml/manual/status_cxx2020.xml: Update status for atomic_ref
1287         and floating point atomics.
1288
1289 2019-07-11  Jonathan Wakely  <jwakely@redhat.com>
1290
1291         * doc/xml/manual/configure.xml: Improve documentation of
1292         --enable-libstdcxx-time option.
1293
1294         * include/bits/atomic_base.h (__atomic_impl): New namespace for
1295         wrappers around atomic built-ins.
1296         (__atomic_float, __atomic_ref): New class templates for use as base
1297         classes.
1298         * include/std/atomic (atomic<float>, atomic<double>)
1299         (atomic<long double>): New explicit specializations.
1300         (atomic_ref): New class template.
1301         (__cpp_lib_atomic_ref): Define.
1302         * include/std/version (__cpp_lib_atomic_ref): Define.
1303         * testsuite/29_atomics/atomic/60695.cc: Adjust dg-error.
1304         * testsuite/29_atomics/atomic_float/1.cc: New test.
1305         * testsuite/29_atomics/atomic_float/requirements.cc: New test.
1306         * testsuite/29_atomics/atomic_ref/deduction.cc: New test.
1307         * testsuite/29_atomics/atomic_ref/float.cc: New test.
1308         * testsuite/29_atomics/atomic_ref/generic.cc: New test.
1309         * testsuite/29_atomics/atomic_ref/integral.cc: New test.
1310         * testsuite/29_atomics/atomic_ref/pointer.cc: New test.
1311         * testsuite/29_atomics/atomic_ref/requirements.cc: New test.
1312
1313 2019-07-06  Jonathan Wakely  <jwakely@redhat.com>
1314
1315         * include/ext/atomicity.h (__exchange_and_add, __atomic_add): Replace
1316         throw() with _GLIBCXX_NOTHROW.
1317         (__atomic_add_dispatch): Return after performing atomic increment.
1318
1319 2019-07-05  Jonathan Wakely  <jwakely@redhat.com>
1320
1321         * include/ext/atomicity.h [_GLIBCXX_ATOMIC_BUILTINS] (__atomic_add)
1322         (__exchange_and_add): Replace static specifier with always_inline
1323         attribute.
1324         (__exchange_and_add_single, __atomic_add_single): Likewise.
1325         (__exchange_and_add_dispatch, __atomic_add_dispatch): Likewise. Also
1326         combine !__gthread_active_p() and !__GTHREADS branches.
1327
1328 2019-07-03  Jonathan Wakely  <jwakely@redhat.com>
1329
1330         PR libstdc++/91067
1331         * acinclude.m4 (libtool_VERSION): Bump to 6:27:0.
1332         * configure: Regenerate.
1333         * config/abi/pre/gnu.ver (GLIBCXX_3.4.27): Add new version. Export
1334         missing symbols.
1335         * testsuite/27_io/filesystem/iterators/91067.cc: New test.
1336         * testsuite/util/testsuite_abi.cc: Add new symbol version.
1337
1338 2019-07-02  Jonathan Wakely  <jwakely@redhat.com>
1339
1340         * include/bits/c++config (_GLIBCXX_HAVE_BUILTIN_LAUNDER)
1341         (_GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED): Use __has_builtin
1342         instead of __is_identifier to detect Clang support.
1343
1344 2019-07-02  Jim Wilson  <jimw@sifive.com>
1345
1346         * configure.ac (BUILD_PDF): Also test for doxygen, dot, xsltproc,
1347         and xmllint.
1348         * configure: Regenerate.
1349
1350 2019-06-27  Jonathan Wakely  <jwakely@redhat.com>
1351
1352         PR libstdc++/91012
1353         * src/c++17/fs_path.cc (filesystem_error::_Impl): Use a string_view
1354         for the what_arg parameters.
1355         (filesystem_error::filesystem_error): Pass system_error::what() to
1356         the _Impl constructor.
1357         * testsuite/27_io/filesystem/filesystem_error/cons.cc: Ensure that
1358         filesystem_error::what() contains system_error::what().
1359
1360 2019-06-26  Jonathan Wakely  <jwakely@redhat.com>
1361
1362         * include/std/charconv (chars_format): Define bitmask type.
1363         * testsuite/20_util/to_chars/chars_format.cc: New test.
1364
1365         * include/bits/fs_path.h (path::__is_encoded_char): Use __is_one_of.
1366         * include/std/bit (_If_is_unsigned_integer_type): Remove.
1367         (_If_is_unsigned_integer): Use __is_unsigned_integer.
1368         (rotl(byte, unsigned), rotr(byte, unsigned), countl_zero(byte))
1369         (countl_one(byte), countr_zero(byte), countr_one(byte))
1370         (popcount(byte), ispow2(byte), ceil2(byte), floor2(byte))
1371         (log2p1(byte)): Remove.
1372         * include/std/charconv (__detail::__is_one_of): Move to <type_traits>.
1373         (__detail::__is_int_to_chars_type): Remove.
1374         (__detail::__integer_to_chars_result_type): Use __is_signed_integer
1375         and __is_unsigned_integer.
1376         * include/std/type_traits (__is_one_of): Move here from <charconv>.
1377         (__is_signed_integer, __is_unsigned_integer): New helpers.
1378         * testsuite/26_numerics/bit/bit.pow.two/ceil2.cc: Remove test for
1379         std::byte overload.
1380         * testsuite/26_numerics/bit/bit.pow.two/floor2.cc: Likewise.
1381         * testsuite/26_numerics/bit/bit.pow.two/ispow2.cc: Likewise.
1382         * testsuite/26_numerics/bit/bit.pow.two/log2p1.cc: Likewise.
1383         * testsuite/26_numerics/bit/bitops.count/countl_one.cc: Likewise.
1384         * testsuite/26_numerics/bit/bitops.count/countl_zero.cc: Likewise.
1385         * testsuite/26_numerics/bit/bitops.count/countr_one.cc: Likewise.
1386         * testsuite/26_numerics/bit/bitops.count/countr_zero.cc: Likewise.
1387         * testsuite/26_numerics/bit/bitops.count/popcount.cc: Likewise.
1388         * testsuite/26_numerics/bit/bitops.rot/rotl.cc: Likewise.
1389         * testsuite/26_numerics/bit/bitops.rot/rotr.cc: Likewise.
1390
1391 2019-06-25  Jonathan Wakely  <jwakely@redhat.com>
1392
1393         * include/std/numeric (midpoint(T, T)): Avoid std::abs in constexpr
1394         function.
1395
1396 2019-06-25  Jakub Jelinek  <jakub@redhat.com>
1397
1398         * include/pstl/pstl_config.h (_PSTL_PRAGMA_SIMD_SCAN,
1399         _PSTL_PRAGMA_SIMD_INCLUSIVE_SCAN, _PSTL_PRAGMA_SIMD_EXCLUSIVE_SCAN):
1400         Define to OpenMP 5.0 pragmas even for GCC 10.0+.
1401         (_PSTL_UDS_PRESENT): Define to 1 for GCC 10.0+.
1402
1403 2019-06-24  Jonathan Wakely  <jwakely@redhat.com>
1404
1405         * include/std/numeric (midpoint(T, T)): Change implementation for
1406         floating-point types to avoid incorrect rounding of denormals.
1407         * testsuite/26_numerics/midpoint/floating.cc: Add check for correct
1408         rounding with denormals.
1409         * testsuite/26_numerics/gcd/gcd_neg.cc: Adjust dg-error line numbers.
1410         * testsuite/26_numerics/lcm/lcm_neg.cc: Likewise.
1411
1412         * testsuite/18_support/headers/cfloat/values_c++17.cc: New test.
1413
1414 2019-06-20  Jonathan Wakely  <jwakely@redhat.com>
1415
1416         * acinclude.m4 (GLIBCXX_ENABLE_DEBUG): Only do debug build for final
1417         stage of bootstrap.
1418         * configure: Regenerate.
1419
1420         * include/std/variant (_Variant_storage, _Extra_visit_slot_needed):
1421         Qualify calls to __never_valueless.
1422
1423         * doc/xml/manual/status_cxx2017.xml: Fix outdated reference to
1424         C++17 working draft.
1425
1426         * testsuite/libstdc++-prettyprinters/simple.cc: Use non-palindromic
1427         vector<bool> for test.
1428         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
1429
1430 2019-06-19  Jonathan Wakely  <jwakely@redhat.com>
1431
1432         * include/bits/stream_iterator.h (istream_iterator::_M_equal()): Make
1433         private.
1434         (istream_iterator::_M_read()): Do not check stream state before
1435         attempting extraction. Set stream pointer to null when extraction
1436         fails (P0738R2).
1437         (operator==(const istream_iterator&, const istream_iterator&)): Change
1438         to be a hidden friend of istream_iterator.
1439         (operator!=(const istream_iterator&, const istream_iterator&)):
1440         Likewise.
1441         (ostream_iterator::ostream_iterator()): Add default constructor.
1442         (ostream_iterator::ostream_iterator(ostream_type*, const C*)): Use
1443         addressof.
1444         * testsuite/24_iterators/istream_iterator/1.cc: New test.
1445         * testsuite/24_iterators/ostream_iterator/1.cc: New test.
1446         * testsuite/24_iterators/ostream_iterator/70766.cc: Also check
1447         constructor taking a string.
1448         * testsuite/24_iterators/ostream_iterator/requirements/constexpr.cc:
1449         New test.
1450
1451 2019-06-19  Michael Weghorn  <m.weghorn@posteo.de>
1452             Jonathan Wakely  <jwakely@redhat.com>
1453
1454         PR libstdc++/90945
1455         * python/libstdcxx/v6/printers.py (StdVectorPrinter._iterator): Use
1456         values of type bool for vector<bool> elements.
1457         * testsuite/libstdc++-prettyprinters/simple.cc: Test vector<bool>.
1458         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
1459
1460 2019-06-19  Jonathan Wakely  <jwakely@redhat.com>
1461
1462         PR libstdc++/90920 partially revert r263433
1463         * include/bits/stl_algo.h (__rotate): Restore checks for empty ranges.
1464         (rotate): Remove checks.
1465         * testsuite/25_algorithms/rotate/90920.cc: New test.
1466
1467         * include/std/numeric (reduce(Iter, Iter, T, BinOp)): Fix value
1468         category used in invocable check.
1469         (reduce(Iter, Iter, T)): Pass initial value as rvalue.
1470         * testsuite/26_numerics/reduce/2.cc: New test.
1471
1472 2019-06-18  Jonathan Wakely  <jwakely@redhat.com>
1473
1474         * include/bits/algorithmfwd.h: Change title of doc group.
1475         * include/bits/stl_algo.h (for_each_n): Add new C++17 algorithm from
1476         P0024R2.
1477         * include/bits/stl_numeric.h: Define doc group and add algos to it.
1478         * include/std/numeric (__is_random_access_iter): New internal trait.
1479         (reduce, transform_reduce, exclusive_scan, inclusive_scan)
1480         (transform_exclusive_scan, transform_inclusive_scan): Likewise.
1481         * testsuite/25_algorithms/for_each/for_each_n.cc: New test.
1482         * testsuite/26_numerics/exclusive_scan/1.cc: New test.
1483         * testsuite/26_numerics/inclusive_scan/1.cc: New test.
1484         * testsuite/26_numerics/reduce/1.cc: New test.
1485         * testsuite/26_numerics/transform_exclusive_scan/1.cc: New test.
1486         * testsuite/26_numerics/transform_inclusive_scan/1.cc: New test.
1487         * testsuite/26_numerics/transform_reduce/1.cc: New test.
1488         * testsuite/util/testsuite_iterators.h (test_container::size()): New
1489         member function.
1490
1491         * include/c_global/cstddef (std::byte): Perform arithmetic operations
1492         in unsigned int to avoid promotion (LWG 2950).
1493
1494 2019-06-17  Jonathan Wakely  <jwakely@redhat.com>
1495
1496         * testsuite/20_util/allocator/1.cc: Add sized delete, which fixes a
1497         failure on AIX.
1498
1499         * include/c_global/cmath (__lerp, lerp): Add noexcept (LWG 3201).
1500
1501         PR libstdc++/90281 Fix string conversions for filesystem::path
1502         * include/bits/fs_path.h (u8path) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]:
1503         Use codecvt_utf8_utf16 instead of codecvt_utf8. Use
1504         __str_codecvt_in_all to fail for partial conversions and throw on
1505         error.
1506         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS && _GLIBCXX_USE_CHAR8_T]
1507         (path::_Cvt<char8_t>): Add explicit specialization.
1508         [_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_wconvert): Remove
1509         overloads.
1510         [_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_convert): Use
1511         if-constexpr instead of dispatching to _S_wconvert. Use codecvt
1512         instead of codecvt_utf8. Use __str_codecvt_in_all and
1513         __str_codecvt_out_all.
1514         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_convert): Use
1515         codecvt instead of codecvt_utf8. Use __str_codecvt_out_all.
1516         (path::_S_str_convert) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
1517         codecvt_utf8_utf16 instead of codecvt_utf8. Construct return values
1518         with allocator. Use __str_codecvt_out_all. Fallthrough to POSIX code
1519         after converting to UTF-8.
1520         (path::_S_str_convert): Use codecvt instead of codecvt_utf8. Use
1521         __str_codecvt_in_all.
1522         (path::string): Fix initialization of string types with different
1523         allocators.
1524         (path::u8string) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
1525         codecvt_utf8_utf16 instead of codecvt_utf8. Use __str_codecvt_out_all.
1526         * include/bits/locale_conv.h (__do_str_codecvt): Reorder static and
1527         runtime conditions.
1528         (__str_codecvt_out_all, __str_codecvt_in_all): New functions that
1529         return false for partial conversions.
1530         * include/experimental/bits/fs_path.h (u8path):
1531         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Implement correctly for mingw.
1532         [_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_wconvert): Add
1533         missing handling for char8_t. Use codecvt and codecvt_utf8_utf16
1534         instead of codecvt_utf8. Use __str_codecvt_in_all and
1535         __str_codecvt_out_all.
1536         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_convert): Use
1537         codecvt instead of codecvt_utf8. Use __str_codecvt_out_all.
1538         (path::string) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
1539         codecvt_utf8_utf16 instead of codecvt_utf8. Construct return values
1540         with allocator. Use __str_codecvt_out_all and __str_codecvt_in_all.
1541         (path::string) [!_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
1542         __str_codecvt_in_all.
1543         (path::u8string) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
1544         codecvt_utf8_utf16 instead of codecvt_utf8. Use __str_codecvt_out_all.
1545         * src/c++17/fs_path.cc (path::_S_convert_loc): Use
1546         __str_codecvt_in_all.
1547         * src/filesystem/path.cc (path::_S_convert_loc): Likewise.
1548         * testsuite/27_io/filesystem/path/construct/90281.cc: New test.
1549         * testsuite/27_io/filesystem/path/factory/u8path.cc: New test.
1550         * testsuite/27_io/filesystem/path/native/string.cc: Test with empty
1551         strings and with Unicode characters outside the basic multilingual
1552         plane.
1553         * testsuite/27_io/filesystem/path/native/alloc.cc: New test.
1554         * testsuite/experimental/filesystem/path/construct/90281.cc: New test.
1555         * testsuite/experimental/filesystem/path/factory/u8path.cc: New test.
1556         * testsuite/experimental/filesystem/path/native/alloc.cc: New test.
1557         * testsuite/experimental/filesystem/path/native/string.cc: Test with
1558         empty strings and with Unicode characters outside the basic
1559         multilingual plane.
1560
1561 2019-06-17  François Dumont  <fdumont@gcc.gnu.org>
1562             Jonathan Wakely  <jwakely@redhat.com>
1563
1564         * include/bits/hashtable.h (struct _Hashtable::_Scoped_node): New type.
1565         (_Hashtable::_M_insert_unique_node): Add key_type parameter. Don't
1566         deallocate node if insertion fails.
1567         (_Hashtable::_M_insert_multi_node): Likewise.
1568         (_Hashtable::_M_reinsert_node): Pass additional key argument.
1569         (_Hashtable::_M_reinsert_node_multi): Likewise. Remove FIXME.
1570         (_Hashtable::_M_extract_node(size_t, __node_base*)): New function.
1571         (_Hashtable::extract(const_iterator)): Use _M_extract_node.
1572         (_Hashtable::extract(const _Key&)): Likewise.
1573         (_Hashtable::_M_merge_unique): Pass additional key argument.
1574         (_Hashtable::_M_emplace<Args>(true_type, Args&&...)): Likewise. Use
1575         _Scoped_node.
1576         (_Hashtable::_M_insert): Likewise.
1577         * include/bits/hashtable_policy.h (_Map_base::operator[]): Likewise.
1578         (_Hashtable_alloc): Add comments to functions with misleading names.
1579
1580 2019-06-17  Jonathan Wakely  <jwakely@redhat.com>
1581
1582         * testsuite/20_util/bad_function_call/what.cc: Include <string> header
1583         for std::string.
1584         * testsuite/20_util/shared_ptr/cons/weak_ptr_expired.cc: Likewise.
1585         * testsuite/20_util/tuple/cons/allocator_with_any.cc: Include <memory>
1586         header for std::allocator.
1587         * testsuite/23_containers/array/tuple_interface/tuple_element.cc: Add
1588         using-declaration for std::size_t.
1589         * testsuite/23_containers/array/tuple_interface/tuple_size.cc:
1590         Likewise.
1591         * testsuite/23_containers/deque/cons/55977.cc: Include <istream> for
1592         std::istream.
1593         * testsuite/23_containers/vector/cons/55977.cc: Likewise.
1594         * testsuite/experimental/map/erasure.cc: Include <string> for
1595         std::string.
1596         * testsuite/experimental/unordered_map/erasure.cc: Likewise.
1597
1598 2019-06-14  Jonathan Wakely  <jwakely@redhat.com>
1599
1600         * include/experimental/type_traits (experimental::nonesuch): Use
1601         pragma to disable -Wctor-dtor-privacy warnings.
1602         * include/std/type_traits (__is_convertible_helper<From, To, false>)
1603         (__is_nt_convertible_helper<From, To, false>, __nonesuch): Likewise.
1604
1605         * include/std/version (__cpp_lib_bind_front): Add missing macro.
1606
1607 2019-06-12  Jonathan Wakely  <jwakely@redhat.com>
1608
1609         * include/std/algorithm (__cpp_lib_parallel_algorithm): Fix value.
1610         * include/std/memory (__cpp_lib_parallel_algorithm): Likewise.
1611         * include/std/numeric (__cpp_lib_parallel_algorithm): Likewise.
1612         * testsuite/25_algorithms/pstl/feature_test.cc: New test.
1613
1614         * include/std/variant (get<T>, get<N>, get_if<N>, get_if<T>)
1615         (variant::emplace): Change static_assert messages from "should be"
1616         to "must be".
1617         (hash<monostate>::operator()): Remove name of unused parameter.
1618
1619         * include/std/mutex (scoped_lock::~scoped_lock()): Use fold
1620         expression.
1621
1622         * include/Makefile.am: Add new <bits/charconv.h> header.
1623         * include/Makefile.in: Regenerate.
1624         * include/bits/basic_string.h (to_string(int), to_string(unsigned))
1625         (to_string(long), to_string(unsigned long), to_string(long long))
1626         (to_string(unsigned long long)): Rewrite to use __to_chars_10_impl.
1627         * include/bits/charconv.h: New header.
1628         (__detail::__to_chars_len): Move here from <charconv>.
1629         (__detail::__to_chars_10_impl): New function extracted from
1630         __detail::__to_chars_10.
1631         * include/std/charconv (__cpp_lib_to_chars): Add, but comment out.
1632         (__to_chars_unsigned_type): New class template that reuses
1633         __make_unsigned_selector_base::__select to pick a type.
1634         (__unsigned_least_t): Redefine as __to_chars_unsigned_type<T>::type.
1635         (__detail::__to_chars_len): Move to new header.
1636         (__detail::__to_chars_10): Add inline specifier. Move code doing the
1637         output to __detail::__to_chars_10_impl and call that.
1638         * include/std/version (__cpp_lib_to_chars): Add, but comment out.
1639         * testsuite/21_strings/basic_string/numeric_conversions/char/
1640         to_string.cc: Fix reference in comment. Remove unused variable.
1641         * testsuite/21_strings/basic_string/numeric_conversions/char/
1642         to_string_int.cc: New test.
1643
1644 2019-06-09  Edward Smith-Rowland  <3dw4rd@verizon.net>
1645
1646         Fix ConstexprIterator requirements tests - No constexpr algorithms!
1647         * testsuite/21_strings/basic_string_view/requirements/constexpr_iter.cc:
1648         Replace copy with hand-rolled loop.
1649         * testsuite/23_containers/array/requirements/constexpr_iter.cc:
1650         Ditto.
1651
1652 2019-06-08  Edward Smith-Rowland  <3dw4rd@verizon.net>
1653
1654         Test for C++20 p0858 - ConstexprIterator requirements.
1655         * testsuite/21_strings/basic_string_view/requirements/constexpr_iter.cc:
1656         New test.
1657         * testsuite/23_containers/array/requirements/constexpr_iter.cc:
1658         New test.
1659
1660 2019-06-07  Thomas Rodgers  <trodgers@redhat.com>
1661
1662         Rename PSTL macro's consistent with libstdc++ (and llvm upstream
1663         project) standards.
1664         * include/bits/c++config: Rename all macros of the form __PSTL* to
1665         _PSTL*.
1666         * include/std/algorithm: Likewise.
1667         * include/std/execution: Likewise.
1668         * include/std/numeric: Likewise.
1669         * include/std/memory: Likewise.
1670         * include/pstl/glue_memory_impl.h: Likewise.
1671         * include/pstl/numeric_impl.h: Likewise.
1672         * include/pstl/glue_memory_defs.h: Likewise.
1673         * include/pstl/execution_defs.h: Likewise.
1674         * include/pstl/utils.h: Likewise.
1675         * include/pstl/algorithm_fwd.h: Likewise.
1676         * include/pstl/unseq_backend_simd.h: Likewise.
1677         * include/pstl/glue_execution_defs.h: Likewise.
1678         * include/pstl/algorithm_impl.h: Likewise.
1679         * include/pstl/parallel_impl.h: Likewise.
1680         * include/pstl/memory_impl.h: Likewise.
1681         * include/pstl/glue_numeric_defs.h: Likewise.
1682         * include/pstl/parallel_backend_utils.h: Likewise.
1683         * include/pstl/glue_algorithm_defs.h: Likewise.
1684         * include/pstl/parallel_backend.h: Likewise.
1685         * include/pstl/glue_numeric_impl.h: Likewise.
1686         * include/pstl/parallel_backend_tbb.h: Likewise.
1687         * include/pstl/numeric_fwd.h: Likewise.
1688         * include/pstl/glue_algorithm_impl.h: Likewise.
1689         * include/pstl/execution_impl.h: Likewise.
1690         * include/pstl/pstl_config.h: Likewise.
1691         * testsuite/util/pstl/pstl_test_config.h: Likewise.
1692         * testsuite/util/pstl/test_utils.h: Likewise.
1693         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc:
1694         Likewise.
1695         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc:
1696         Likewise.
1697         * testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc:
1698         Likewise.
1699         * testsuite/26_numerics/pstl/numeric_ops/scan.cc: Likewise.
1700         * testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc: Likewise.
1701         * testsuite/26_numerics/pstl/numeric_ops/reduce.cc: Likewise.
1702         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc: Likewise.
1703         * testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc:
1704         Likewise.
1705         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc: Likewise.
1706         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc: Likewise.
1707         * testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc: Likewise.
1708         * testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc: Likewise.
1709         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc:
1710         Likewise.
1711         * testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc: Likewise.
1712         * testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc: Likewise.
1713         * testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc: Likewise.
1714         * testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc: Likewise.
1715         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc:
1716         Likewise.
1717         * testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: Likewise.
1718         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc: Likewise.
1719         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc:
1720         Likewise.
1721         * testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc:
1722         Likewise.
1723         * testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: Likewise.
1724         * testsuite/25_algorithms/pstl/alg_merge/merge.cc: Likewise.
1725         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc:
1726         Likewise.
1727         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc:
1728         Likewise.
1729         * testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc:
1730         Likewise.
1731         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc:
1732         Likewise.
1733         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc:
1734         Likewise.
1735         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc:
1736         Likewise.
1737         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc:
1738         Likewise.
1739         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc:
1740         Likewise.
1741         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc:
1742         Likewise.
1743         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc:
1744         Likewise.
1745         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc:
1746         Likewise.
1747         * testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc: Likewise.
1748
1749         Rename header guards to be consistent with upstream project's
1750         conventions.
1751         * include/pstl/glue_memory_impl.h: Rename all macros of the form
1752         _PSTL_(.*)_H to _PSTL_\U\1_H.
1753         * include/pstl/numeric_impl.h: Likewise.
1754         * include/pstl/glue_memory_defs.h: Likewise.
1755         * include/pstl/execution_defs.h: Likewise.
1756         * include/pstl/utils.h: Likewise.
1757         * include/pstl/algorithm_fwd.h: Likewise.
1758         * include/pstl/unseq_backend_simd.h: Likewise.
1759         * include/pstl/glue_execution_defs.h: Likewise.
1760         * include/pstl/algorithm_impl.h: Likewise.
1761         * include/pstl/parallel_impl.h: Likewise.
1762         * include/pstl/memory_impl.h: Likewise.
1763         * include/pstl/glue_numeric_defs.h: Likewise.
1764         * include/pstl/parallel_backend_utils.h: Likewise.
1765         * include/pstl/glue_algorithm_defs.h: Likewise.
1766         * include/pstl/parallel_backend.h: Likewise.
1767         * include/pstl/glue_numeric_impl.h: Likewise.
1768         * include/pstl/parallel_backend_tbb.h: Likewise.
1769         * include/pstl/numeric_fwd.h: Likewise.
1770         * include/pstl/glue_algorithm_impl.h: Likewise.
1771         * include/pstl/execution_impl.h: Likewise.
1772         * include/pstl/pstl_config.h: Likewise.
1773         * testsuite/util/pstl/pstl_test_config.h: Likewise.
1774
1775         Synchronize libstdc++ parallel algorithms with upstream
1776         project.
1777         * include/pstl/algorithm_fwd.h: Synchronize with
1778         upstream PSTL project.
1779         * include/pstl/algorithm_impl.h: Likewise.
1780         * include/pstl/execution_defs.h: Likewise.
1781         * include/pstl/execution_impl.h: Likewise.
1782         * include/pstl/glue_algorithm_impl.h: Likewise.
1783         * include/pstl/glue_execution_defs.h: Likewise.
1784         * include/pstl/numeric_fwd.h: Likewise.
1785         * include/pstl/numeric_impl.h: Likewise.
1786         * include/pstl/parallel_backend.h: Likewise.
1787         * include/pstl/pstl_config.h: Likewise.
1788         * include/pstl/unseq_backend_simd.h: Likewise.
1789         * include/pstl/parallel_backend_serial.h: New file.
1790         * include/Makefile.am (pstl_headers): Add
1791         parallel_backend_serial.h.
1792         * include/Makefile.in: Regenerate.
1793
1794         Clean up non-conforming names
1795         * include/pstl/algorithm_impl.h (__parallel_set_union_op):
1796         Uglfiy copy_range1 and copy_range2
1797         (__pattern_walk2_n): Rename local n to __n
1798         * include/pstl/parallel_backend_tbb.h (struct __binary_no_op):
1799         Rename parameter _T to _Tp.
1800
1801         Integrate non-TBB serial backend support
1802         * include/bits/c++config: Adjust TBB detection logic to select serial
1803         PSTL backend if no TBB present.
1804         * testsuite/utils/pstl/test_utils.h: Remove check for
1805         _PSTL_USE_PAR_POLICIES
1806
1807 2019-06-07  Jonathan Wakely  <jwakely@redhat.com>
1808
1809         * testsuite/24_iterators/container_access.cc: Move dg-options before
1810         dg-do directive so the target check uses the -std option.
1811
1812         PR libstdc++/90770
1813         * configure: Regenerate.
1814         * src/Makefile.am (stamp-debug): Also test for missing makefile.
1815         * src/Makefile.in: Regenerate.
1816
1817 2019-06-06  Jonathan Wakely  <jwakely@redhat.com>
1818
1819         * include/std/array: Do not include <stdexcept>.
1820         * include/std/optional: Include <exception> and
1821         <bits/exception_defines.h> instead of <stdexcept>.
1822         * testsuite/20_util/function_objects/searchers.cc: Include <cctype>
1823         for std::isalnum.
1824         * testsuite/20_util/tuple/cons/deduction.cc: Include <memory> for
1825         std::allocator.
1826         * testsuite/23_containers/map/erasure.cc: Include <string>.
1827         * testsuite/23_containers/unordered_map/erasure.cc: Likewise.
1828
1829         * testsuite/23_containers/deque/requirements/dr438/assign_neg.cc: Add
1830         dg-prune-output for different C++98 diagnostic.
1831         * testsuite/23_containers/deque/requirements/dr438/constructor_1_neg.cc:
1832         Likewise.
1833         * testsuite/23_containers/deque/requirements/dr438/constructor_2_neg.cc:
1834         Likewise.
1835         * testsuite/23_containers/deque/requirements/dr438/insert_neg.cc:
1836         Likewise.
1837         * testsuite/23_containers/list/requirements/dr438/assign_neg.cc:
1838         Likewise.
1839         * testsuite/23_containers/list/requirements/dr438/constructor_1_neg.cc:
1840         Likewise.
1841         * testsuite/23_containers/list/requirements/dr438/constructor_2_neg.cc:
1842         Likewise.
1843         * testsuite/23_containers/list/requirements/dr438/insert_neg.cc:
1844         Likewise.
1845         * testsuite/23_containers/vector/requirements/dr438/assign_neg.cc:
1846         Likewise.
1847         * testsuite/23_containers/vector/requirements/dr438/
1848         constructor_1_neg.cc: Likewise.
1849         * testsuite/23_containers/vector/requirements/dr438/
1850         constructor_2_neg.cc: Likewise.
1851         * testsuite/23_containers/vector/requirements/dr438/insert_neg.cc:
1852         Likewise.
1853         * testsuite/libstdc++-prettyprinters/compat.cc: Do not run for C++98.
1854
1855         * testsuite/23_containers/unordered_map/requirements/debug_container.cc:
1856         Do not test allocator rebinding extension for C++2a.
1857         * testsuite/23_containers/unordered_set/allocator/ext_ptr.cc: Change
1858         dg-do directive for C++17 and C++2a.
1859
1860         * testsuite/23_containers/deque/requirements/explicit_instantiation/
1861         1_c++0x.cc: Remove redundant test.
1862         * testsuite/23_containers/deque/requirements/explicit_instantiation/
1863         2.cc: Use target selector instead of preprocessor condition.
1864         * testsuite/23_containers/deque/requirements/explicit_instantiation/
1865         3.cc: Do not run test for C++2a.
1866         * testsuite/23_containers/forward_list/requirements/
1867         explicit_instantiation/3.cc: Likewise.
1868         * testsuite/23_containers/forward_list/requirements/
1869         explicit_instantiation/5.cc: Do not test allocator rebinding extension
1870         for C++2a.
1871         * testsuite/23_containers/list/requirements/explicit_instantiation/
1872         1_c++0x.cc: Remove redundant test.
1873         * testsuite/23_containers/list/requirements/explicit_instantiation/
1874         2.cc: Use target selector instead of preprocessor condition.
1875         * testsuite/23_containers/list/requirements/explicit_instantiation/
1876         3.cc: Do not run test for C++2a.
1877         * testsuite/23_containers/list/requirements/explicit_instantiation/
1878         5.cc: Do not test allocator rebinding extension for C++2a.
1879         * testsuite/23_containers/map/requirements/explicit_instantiation/
1880         1_c++0x.cc: Remove redundant test.
1881         * testsuite/23_containers/map/requirements/explicit_instantiation/
1882         2.cc: Adjust comment.
1883         * testsuite/23_containers/map/requirements/explicit_instantiation/
1884         3.cc: Do not run test for C++2a.
1885         * testsuite/23_containers/map/requirements/explicit_instantiation/
1886         5.cc: Do not test allocator rebinding extension for C++2a.
1887         * testsuite/23_containers/multimap/requirements/explicit_instantiation/
1888         1_c++0x.cc: Remove redundant test.
1889         * testsuite/23_containers/multimap/requirements/explicit_instantiation/
1890         3.cc: Do not run test for C++2a.
1891         * testsuite/23_containers/multimap/requirements/explicit_instantiation/
1892         5.cc: Do not test allocator rebinding extension for C++2a.
1893         * testsuite/23_containers/multiset/requirements/explicit_instantiation/
1894         3.cc: Do not run test for C++2a.
1895         * testsuite/23_containers/multiset/requirements/explicit_instantiation/
1896         5.cc: Do not test allocator rebinding extension for C++2a.
1897         * testsuite/23_containers/set/requirements/explicit_instantiation/3.cc:
1898         Do not run test for C++2a.
1899         * testsuite/23_containers/set/requirements/explicit_instantiation/
1900         1_c++0x.cc: Remove redundant test.
1901         * testsuite/23_containers/set/requirements/explicit_instantiation/5.cc:
1902         Do not test allocator rebinding extension for C++2a.
1903         * testsuite/23_containers/unordered_map/requirements/
1904         explicit_instantiation/3.cc: Likewise.
1905         * testsuite/23_containers/unordered_map/requirements/
1906         explicit_instantiation/5.cc: Do not test allocator rebinding extension
1907         for C++2a.
1908         * testsuite/23_containers/unordered_multimap/requirements/
1909         explicit_instantiation/3.cc: Do not run test for C++2a.
1910         * testsuite/23_containers/unordered_multimap/requirements/
1911         explicit_instantiation/5.cc: Do not test allocator rebinding extension
1912         for C++2a.
1913         * testsuite/23_containers/unordered_multiset/requirements/
1914         explicit_instantiation/3.cc: Do not run test for C++2a.
1915         * testsuite/23_containers/unordered_multiset/requirements/
1916         explicit_instantiation/5.cc: Do not test allocator rebinding extension
1917         for C++2a.
1918         * testsuite/23_containers/unordered_set/requirements/
1919         explicit_instantiation/3.cc: Do not run test for C++2a.
1920         * testsuite/23_containers/unordered_set/requirements/
1921         explicit_instantiation/5.cc: Do not test allocator rebinding extension
1922         for C++2a.
1923         * testsuite/23_containers/vector/ext_pointer/explicit_instantiation/
1924         2.cc: Remove redundant test.
1925         * testsuite/23_containers/vector/ext_pointer/explicit_instantiation/
1926         3.cc: Do not run test for C++2a.
1927         * testsuite/23_containers/vector/requirements/explicit_instantiation/
1928         3.cc: Likewise.
1929
1930         * include/std/type_traits (is_empty, is_polymorphic, is_final)
1931         (is_abstract, is_aggregate): Remove static_assert.
1932         * testsuite/20_util/is_abstract/incomplete_neg.cc: Check for error
1933         from builtin only.
1934         * testsuite/20_util/is_aggregate/incomplete_neg.cc: Likewise. Add
1935         missing -std=gnu++17 option.
1936         * testsuite/20_util/is_empty/incomplete_neg.cc: New test.
1937         * testsuite/20_util/is_final/incomplete_neg.cc: New test.
1938         * testsuite/20_util/is_polymorphic/incomplete_neg.cc: Check for error
1939         from builtin only.
1940
1941         * testsuite/18_support/set_terminate.cc: Do not run for C++98 mode.
1942         * testsuite/18_support/set_unexpected.cc: Likewise.
1943         * testsuite/20_util/is_nothrow_invocable/value.cc: Test converting to
1944         void.
1945         * testsuite/20_util/is_nothrow_invocable/value_ext.cc: Fix constexpr
1946         function to be valid in C++11.
1947         * testsuite/26_numerics/complex/proj.cc: Do not run for C++98 mode.
1948         * testsuite/experimental/names.cc: Do not run for C++98 mode. Do not
1949         include Library Fundamentals or Networking headers in C++11 mode.
1950         * testsuite/ext/char8_t/atomic-1.cc: Do not run for C++98 mode.
1951
1952         * include/std/tuple (_TC): Replace with _TupleConstraints.
1953         (_TupleConstraints): New helper for SFINAE constraints, with more
1954         expressive member functions to reduce duplication when used.
1955         (tuple::_TC2, tuple::_TMC, tuple::_TNTC): Remove.
1956         (tuple::_TCC): Replace dummy type parameter with bool non-type
1957         parameter that can be used to check the pack size.
1958         (tuple::_ImplicitDefaultCtor, tuple::_ExplicitDefaultCtor)
1959         (tuple::_ImplicitCtor, tuple::_ExplicitCtor): New alias templates for
1960         checking constraints in constructors.
1961         (tuple::__valid_args, tuple::_UseOtherCtor, tuple::__use_other_ctor):
1962         New SFINAE helpers.
1963         (tuple::tuple): Use new helpers to reduce repitition in constraints.
1964         (tuple::tuple(allocator_arg_t, const Alloc&)): Constrain.
1965         (tuple<T1, T2>::_TCC, tuple<T1, T2>::_ImplicitDefaultCtor)
1966         (tuple<T1, T2>::_ExplicitDefaultCtor, tuple<T1, T2>::_ImplicitCtor)
1967         (tuple<T1, T2>::_ExplicitCtor): New alias templates for checking
1968         constraints in constructors.
1969         (tuple::__is_alloc_arg()): New SFINAE helpers.
1970         (tuple<T1, T2>::tuple): Use new helpers to reduce repitition in
1971         constraints.
1972         (tuple<T1, T2>::tuple(allocator_arg_t, const Alloc&)): Constrain.
1973         * testsuite/20_util/tuple/cons/90700.cc: New test.
1974         * testsuite/20_util/tuple/cons/allocators.cc: Add default constructor
1975         to meet new constraint on allocator-extended default constructor.
1976
1977 2019-06-03  Jonathan Wakely  <jwakely@redhat.com>
1978
1979         * include/bits/stl_map.h (map): Disable static assert for C++98 mode.
1980         * include/bits/stl_multimap.h (multimap): Likewise.
1981
1982 2019-06-03  François Dumont  <fdumont@gcc.gnu.org>
1983
1984         Rename variables and cleanup comments.
1985         * include/bits/hashtable_policy.h
1986         * include/bits/hashtable.h
1987
1988 2019-06-03  Jonathan Wakely  <jwakely@redhat.com>
1989
1990         * doc/xml/manual/status_cxx2020.xml: Add missing row for P0920R2.
1991         Fix bgcolor for P0340R3.
1992         * doc/html/*: Regenerate.
1993
1994         PR libstdc++/90686
1995         * doc/xml/manual/status_cxx2014.xml: Document what's missing from
1996         <experimental/memory_resource>.
1997         * doc/xml/manual/status_cxx2020.xml: Document status of P1285R0,
1998         P0339R6, P0340R3, P1164R1 and P1357R1.
1999         * doc/html/*: Regenerate.
2000
2001         * doc/xml/manual/status_cxx2020.xml: Document P1463R1 status.
2002         * include/bits/forward_list.h [__cplusplus > 201703]: Enable
2003         allocator::value_type assertion for C++2a.
2004         * include/bits/hashtable.h: Likewise.
2005         * include/bits/stl_deque.h: Likewise.
2006         * include/bits/stl_list.h: Likewise.
2007         * include/bits/stl_map.h: Likewise.
2008         * include/bits/stl_multimap.h: Likewise.
2009         * include/bits/stl_multiset.h: Likewise.
2010         * include/bits/stl_set.h: Likewise.
2011         * include/bits/stl_vector.h: Likewise.
2012         * testsuite/23_containers/deque/48101-3_neg.cc: New test.
2013         * testsuite/23_containers/forward_list/48101-3_neg.cc: New test.
2014         * testsuite/23_containers/list/48101-3_neg.cc: New test.
2015         * testsuite/23_containers/map/48101-3_neg.cc: New test.
2016         * testsuite/23_containers/multimap/48101-3_neg.cc: New test.
2017         * testsuite/23_containers/multiset/48101-3_neg.cc: New test.
2018         * testsuite/23_containers/set/48101-3_neg.cc: New test.
2019         * testsuite/23_containers/unordered_map/48101-3_neg.cc: New test.
2020         * testsuite/23_containers/unordered_multimap/48101-3_neg.cc: New test.
2021         * testsuite/23_containers/unordered_multiset/48101-3_neg.cc: New test.
2022         * testsuite/23_containers/unordered_set/48101-3_neg.cc: New test.
2023         * testsuite/23_containers/vector/48101-3_neg.cc: New test.
2024
2025 2019-05-31  Gerald Pfeifer  <gerald@pfeifer.com>
2026
2027         * doc/xml/manual/allocator.xml: Move hoard.org back to http.
2028
2029 2019-05-31  Jonathan Wakely  <jwakely@redhat.com>
2030
2031         * include/std/tuple (tuple<>): Add noexcept to allocator-extended
2032         constructors.
2033         (tuple<T1, T2>::__nothrow_default_constructible()): New helper
2034         function.
2035         (tuple<T1, T2>::tuple(), explicit tuple<T1, T2>::tuple()): Use helper.
2036
2037 2019-05-31  Jonathan Wakely  <jwakely@redhat.com>
2038
2039         * src/c++98/bitmap_allocator.cc: Add using-declaration for size_t.
2040
2041         PR libstdc++/90682
2042         * libsupc++/eh_term_handler.cc: Include eh_term_handler.h to get
2043         definition of _GLIBCXX_DEFAULT_TERM_HANDLER.
2044         * libsupc++/eh_term_handler.h: New header defining
2045         _GLIBCXX_DEFAULT_TERM_HANDLER.
2046         * libsupc++/eh_terminate.cc: Include eh_term_handler.h.
2047         (set_terminate): Restore default handler when argument is null.
2048         (set_unexpected): Likewise.
2049         * testsuite/18_support/set_terminate.cc: New test.
2050         * testsuite/18_support/set_unexpected.cc: New test.
2051
2052         * include/backward/hashtable.h (size_t, ptrdiff_t)
2053         (forward_iterator_tag, input_iterator_tag, _Construct, _Destroy)
2054         (distance, vector, pair, __iterator_category): Remove
2055         using-declarations that add these names to namespace __gnu_cxx.
2056         * include/ext/bitmap_allocator.h (size_t, ptrdiff_t): Likewise.
2057         * include/ext/debug_allocator.h (size_t): Likewise.
2058         * include/ext/functional (size_t, unary_function, binary_function)
2059         (mem_fun1_t, const_mem_fun1_t, mem_fun1_ref_t, const_mem_fun1_ref_t):
2060         Likewise.
2061         * include/ext/malloc_allocator.h (size_t, ptrdiff_t): Likewise.
2062         * include/ext/memory (ptrdiff_t, pair, __iterator_category): Likewise.
2063         * include/ext/mt_allocator.h (size_t, ptrdiff_t): Likewise.
2064         * include/ext/new_allocator.h (size_t, ptrdiff_t): Likewise.
2065         * include/ext/numeric (iota): Fix outdated comment.
2066         * include/ext/pool_allocator.h (size_t, ptrdiff_t): Likewise.
2067         * include/ext/rb_tree (_Rb_tree, allocator): Likewise.
2068         * include/ext/rope (size_t, ptrdiff_t, allocator, _Destroy): Likewise.
2069         * include/ext/ropeimpl.h (size_t, printf, basic_ostream)
2070         (__throw_length_error, _Destroy, std::__uninitialized_fill_n_a):
2071         Likewise.
2072         * include/ext/slist (size_t, ptrdiff_t, _Construct, _Destroy)
2073         (allocator, __true_type, __false_type): Likewise.
2074
2075 2019-05-31  Antony Polukhin  <antoshkka@gmail.com>
2076
2077         PR libstdc++/71579
2078         * include/std/type_traits __type_identity, __is_complete_or_unbounded):
2079         New helpers for checking preconditions in traits.
2080         (is_trivial, is_trivially_copyable, is_standard_layout, is_pod)
2081         (is_literal_type, is_empty, is_polymorphic, is_final, is_abstract)
2082         (is_destructible, is_nothrow_destructible, is_constructible)
2083         (is_default_constructible, is_copy_constructible)
2084         (is_move_constructible, is_nothrow_default_constructible)
2085         (is_nothrow_constructible, is_nothrow_copy_constructible)
2086         (is_nothrow_move_constructible, is_copy_assignable, is_move_assignable)
2087         (is_nothrow_assignable, is_nothrow_copy_assignable)
2088         (is_nothrow_move_assignable, is_trivially_constructible)
2089         (is_trivially_copy_constructible, is_trivially_move_constructible)
2090         is_trivially_assignable, is_trivially_copy_assignable)
2091         (is_trivially_move_assignable, is_trivially_destructible)
2092         (alignment_of, is_swappable, is_nothrow_swappable, is_invocable)
2093         (is_invocable_r, is_nothrow_invocable)
2094         (has_unique_object_representations, is_aggregate): Add static_asserts
2095         to make sure that type traits are not misused with incomplete types.
2096         (__is_constructible_impl, __is_nothrow_default_constructible_impl)
2097         (__is_nothrow_constructible_impl, __is_nothrow_assignable_impl): New
2098         base characteristics without assertions that can be reused in other
2099         traits.
2100         * testsuite/20_util/is_complete_or_unbounded/memoization.cc: New test.
2101         * testsuite/20_util/is_complete_or_unbounded/memoization_neg.cc: New
2102         test.
2103         * testsuite/20_util/is_complete_or_unbounded/value.cc: New test.
2104         * testsuite/20_util/is_abstract/incomplete_neg.cc: New test.
2105         * testsuite/20_util/is_aggregate/incomplete_neg.cc: New test.
2106         * testsuite/20_util/is_class/value.cc: Check incomplete type.
2107         * testsuite/20_util/is_function/value.cc: Likewise.
2108         * testsuite/20_util/is_move_constructible/incomplete_neg.cc: New test.
2109         * testsuite/20_util/is_nothrow_move_assignable/incomplete_neg.cc: New
2110         test.
2111         * testsuite/20_util/is_polymorphic/incomplete_neg.cc: New test.
2112         * testsuite/20_util/is_reference/value.cc: Check incomplete types.
2113         * testsuite/20_util/is_unbounded_array/value.cc: Likewise.
2114         * testsuite/20_util/is_union/value.cc: Likewise.
2115         * testsuite/20_util/is_void/value.cc: Likewise.
2116         * testsuite/util/testsuite_tr1.h: Add incomplete union type.
2117
2118 2019-05-31  Jonathan Wakely  <jwakely@redhat.com>
2119
2120         * include/bits/random.h (random_device::_M_init(const char*, size_t)):
2121         Add new private member function.
2122         * src/c++11/cow-string-inst.cc (random_device::_M_init(const string&))
2123         (random_device::_M_init_pretr1(const string&)): Call new private
2124         member with string data.
2125         * src/c++11/random.cc (random_device::_M_init(const char*, size_t)):
2126         Define.
2127         * testsuite/26_numerics/random/random_device/cons/default-cow.cc: New
2128         test using COW strings.
2129         * testsuite/26_numerics/random/random_device/cons/default.cc: Generate
2130         a value from the device.
2131         * testsuite/26_numerics/random/random_device/cons/token.cc: Likewise.
2132         Fix typo in token string.
2133
2134 2019-05-30  Nina Dinka Ranns  <dinka.ranns@gmail.com>
2135
2136         LWG2788 basic_string spurious use of a default constructible allocator
2137         * include/bits/basic_string.tcc [_GLIBCXX_USE_CXX11_ABI]
2138         (basic_string::_M_replace_dispatch): Construct temporary string with
2139         the current allocator.
2140         * testsuite/21_strings/basic_string/allocator/char/lwg2788.cc: New.
2141         * testsuite/21_strings/basic_string/allocator/wchar_t/lwg2788.cc: New.
2142
2143 2019-05-30  Jonathan Wakely  <jwakely@redhat.com>
2144
2145         * doc/xml/manual/diagnostics.xml: Update list of headers that define
2146         exception classes.
2147         * doc/xml/manual/support.xml: Rewrite advice around NULL. Rewrite
2148         section about new/delete overloads. Improve section on verbose
2149         terminate handler.
2150         * doc/html/*: Regenerate.
2151
2152         * doc/xml/manual/status_cxx2020.xml: Add feature-test macro for
2153         P0811R3. Change status of P1353R0.
2154         * doc/html/*: Regenerate.
2155
2156         * doc/xml/manual/status_cxx2011.xml: Use <variablelist> for
2157         documentation of implementation-defined types for [thread.req.native].
2158         * doc/xml/manual/status_cxx2017.xml: Update documentation of
2159         implementation-defined strings for [variant.bad.access]. Fix typo in
2160         documentation of implementation-defined support for [fs.conform.9945].
2161         * doc/html/*: Regenerate.
2162
2163 2019-05-29  Jonathan Wakely  <jwakely@redhat.com>
2164
2165         PR libstdc++/85494
2166         * testsuite/26_numerics/random/random_device/cons/token.cc: Fix test
2167         that fails on mingw-w64.
2168
2169         PR libstdc++/88881
2170         * src/c++17/fs_ops.cc [_GLIBCXX_FILESYSTEM_IS_WINDOWS]
2171         (status(const path&, error_code&)): Use parent_path() to remove
2172         trailing slash.
2173         (symlink_status(const path&, error_code&)): Duplicate workaround for
2174         bug in _wstat for paths with trailing slash.
2175         * testsuite/27_io/filesystem/operations/remove_all.cc: Check path
2176         with trailing slash.
2177         * testsuite/27_io/filesystem/operations/status.cc: Likewise.
2178         * testsuite/27_io/filesystem/operations/symlink_status.cc: Likewise.
2179
2180         * src/c++17/fs_path.cc (path::parent_path()): Create whole path at
2181         once instead of building it iteratively.
2182
2183         * testsuite/util/testsuite_api.h: Remove names of unused parameters.
2184
2185         PR libstdc++/85494 use rdseed and rand_s in std::random_device
2186         * acinclude.m4 (GLIBCXX_CHECK_X86_RDSEED): Define macro to check if
2187         the assembler supports rdseed.
2188         * config.h.in: Regenerate.
2189         * configure: Regenerate.
2190         * configure.ac: Use GLIBCXX_CHECK_X86_RDSEED.
2191         * config/os/mingw32-w64/os_defines.h (_GLIBCXX_USE_CRT_RAND_S): Define.
2192         * doc/html/*: Regenerate.
2193         * doc/xml/manual/status_cxx2011.xml: Document new tokens.
2194         * include/bits/random.h (random_device::random_device()): Always call
2195         _M_init rather than _M_init_pretr1.
2196         (random_device::random_device(const string&)): Likewise.
2197         (random_device::operator()()): Always call _M_getval().
2198         (random_device::_M_file): Replace first member of union with an
2199         anonymous struct, with _M_file as its first member.
2200         * src/c++11/random.cc [_GLIBCXX_X86_RDRAND] (USE_RDRAND): Define.
2201         [_GLIBCXX_X86_RDSEED] (USE_RDSEED): Define.
2202         (USE_MT19937): Define if none of the above are defined.
2203         (USE_POSIX_FILE_IO): Define.
2204         (_M_strtoul): Remove.
2205         [USE_RDSEED] (__x86_rdseed): Define new function.
2206         [_GLIBCXX_USE_CRT_RAND_S] (__winxp_rand_s): Define new function.
2207         (random_device::_M_init(const string&)): Initialize new union members.
2208         Add support for "rdseed" and "rand_s" tokens. Decide what the
2209         "default" token does according to which USE_* macros are defined.
2210         [USE_POSIX_FILE_IO]: Store a file descriptor.
2211         [USE_MT19937]: Forward to _M_init_pretr1 instead.
2212         (random_device::_M_init_pretr1(const string&)) [USE_MT19937]: Inline
2213         code from _M_strtoul.
2214         [!USE_MT19937]: Call _M_init, transforming the old default token or
2215         numeric tokens to "default".
2216         (random_device::_M_fini()) [USE_POSIX_FILE_IO]: Use close not fclose.
2217         (random_device::_M_getval()): Use new union members to obtain a
2218         random number from the stored function pointer or file descriptor.
2219         [USE_MT19937]: Obtain a value from the mt19937 engine.
2220         (random_device::_M_getval_pretr1()): Call _M_getval().
2221         (random_device::_M_getentropy()) [USE_POSIX_FILE_IO]: Use _M_fd
2222         instead of fileno.
2223         [!USE_MT19937] (mersenne_twister): Do not instantiate when not needed.
2224         * testsuite/26_numerics/random/random_device/85494.cc: New test.
2225
2226 2019-05-28  Jonathan Wakely  <jwakely@redhat.com>
2227
2228         PR libstdc++/90634
2229         * include/experimental/bits/fs_path.h (path::path(path&&)): Only call
2230         _M_split_cmpts() for a path with multiple components.
2231         (path::_S_is_dir_sep()): Add missing 'static' keyword to function.
2232         * src/filesystem/path.cc (path::_M_split_cmpts()): Count number of
2233         components and reserve space in vector. Return early when there is
2234         only one component.
2235         * testsuite/27_io/filesystem/path/construct/90634.cc: New test.
2236         * testsuite/experimental/filesystem/path/construct/90634.cc: New test.
2237
2238         * testsuite/util/testsuite_fs.h (compare_paths): Use three-argument
2239         form of std::equals for C++11 compatibility.
2240
2241 2019-05-26  Gerald Pfeifer  <gerald@pfeifer.com>
2242
2243         * doc/xml/manual/appendix_contributing.xml: Update pointer to
2244         C++ standard at ansi.org.
2245
2246 2019-05-24  Jonathan Wakely  <jwakely@redhat.com>
2247
2248         * include/std/numeric (midpoint(T*, T*)): Fix incorrect result.
2249         * testsuite/26_numerics/midpoint/pointer.cc: Change "compile" test
2250         to "run".
2251
2252         * testsuite/20_util/shared_ptr/cons/alias-rval.cc: Fix test.
2253         * testsuite/20_util/shared_ptr/cons/alias.cc: Remove unused function.
2254
2255 2019-05-23  Jonathan Wakely  <jwakely@redhat.com>
2256
2257         * testsuite/20_util/function_objects/invoke/1.cc: Move C++17-specific
2258         tests to ...
2259         * testsuite/20_util/function_objects/invoke/3.cc: New test.
2260         * testsuite/23_containers/unordered_set/allocator/ext_ptr.cc: Change
2261         "compile" test to "run".
2262
2263         * doc/xml/manual/intro.xml: Document LWG DR 2996 change.
2264         * doc/html/*: Regenerate.
2265         * include/bits/shared_ptr.h (shared_ptr(shared_ptr&&, T*)): Add
2266         rvalue aliasing constructor.
2267         (static_pointer_cast, const_pointer, dynamic_pointer_cast)
2268         (reinterpret_pointer_cast): Add overloads taking rvalues.
2269         * include/bits/shared_ptr_base.h (__shared_ptr(__shared_ptr&&, T*)):
2270         Add rvalue aliasing constructor.
2271         * testsuite/20_util/shared_ptr/casts/1.cc: Change "compile" test to
2272         "run" and check return values as well as types.
2273         * testsuite/20_util/shared_ptr/casts/reinterpret.cc: Likewise.
2274         * testsuite/20_util/shared_ptr/casts/rval.cc: New test.
2275         * testsuite/20_util/shared_ptr/cons/alias-rval.cc: New test.
2276         * testsuite/20_util/shared_ptr/cons/alias.cc: Remove unused return
2277         values.
2278
2279         * doc/xml/manual/evolution.xml: Document LWG DR 2921 change.
2280         * doc/xml/manual/intro.xml: Likewise.
2281         * include/std/future (__create_task_state): Add default arguments
2282         to make providing an allocator optional.
2283         (packaged_task::packaged_task(F&&)): Call __create_task_state directly
2284         instead of delegating to another constructor.
2285         (packaged_task::packaged_task(allocator_arg_t, const A&, ...)): Do not
2286         define allocator-extended constructors for C++17 and later.
2287         * testsuite/30_threads/packaged_task/cons/alloc.cc: Only run test for
2288         C++11 and C++14.
2289         * testsuite/30_threads/packaged_task/cons/alloc2.cc: Likewise.
2290         * testsuite/30_threads/packaged_task/cons/alloc_min.cc: Likewise.
2291         * testsuite/30_threads/packaged_task/uses_allocator.cc: Likewise.
2292
2293 2019-05-23  Hans-Peter Nilsson  <hp@axis.com>
2294
2295         * testsuite/26_numerics/random/poisson_distribution/operators/values.cc:
2296         Don't run the libstdc++/83237 part on simulator targets.
2297
2298 2019-05-23  Jonathan Wakely  <jwakely@redhat.com>
2299
2300         * doc/xml/manual/status_cxx2017.xml: Add feature test macro for
2301         P0040R3.
2302         * doc/html/*: Regenerate.
2303
2304         * include/experimental/any (__any_caster): Use RTTI if comparing
2305         addresses fails, to support non-unique addresses in shared libraries.
2306         * include/std/any (__any_caster): Likewise.
2307
2308         PR libstdc++/90220
2309         * include/experimental/any (__any_caster): Constrain to only be
2310         callable for object types. Use remove_cv_t instead of decay_t.
2311         If the type decays or isn't copy constructible, compare the manager
2312         function to a dummy specialization.
2313         (__any_caster): Add overload constrained for non-object types.
2314         (any::_Manager_internal<_Op>): Add dummy specialization.
2315         * testsuite/experimental/any/misc/any_cast.cc: Test function types
2316         and array types.
2317
2318 2019-05-22  Jonathan Wakely  <jwakely@redhat.com>
2319
2320         PR libstdc++/90557
2321         * src/c++17/fs_path.cc (path::_List::operator=(const _List&)): Fix
2322         reversed arguments to uninitialized_copy_n.
2323         * testsuite/27_io/filesystem/path/assign/copy.cc: Check that source
2324         is unchanged by copy assignment.
2325         * testsuite/util/testsuite_fs.h (compare_paths): Use std::equal to
2326         compare path components.
2327
2328         PR libstdc++/77691
2329         * include/experimental/memory_resource: Add system header pragma and
2330         do not define anything unless compiled as C++14 or later.
2331         (__resource_adaptor_common::__guaranteed_alignment): Remove.
2332         (__resource_adaptor_imp::do_allocate): If the requested alignment
2333         is a fundamental alignment then either allocate directly from _M_alloc
2334         or call the new _M_allocate function.
2335         (__resource_adaptor_imp::do_deallocate): Likewise for deallocation.
2336         (__resource_adaptor_imp::_M_allocate): New function that uses a copy
2337         of the allocator rebound to a POD type with the specified alignment.
2338         (__resource_adaptor_imp::_M_deallocate): Likewise for deallocation.
2339         * testsuite/experimental/memory_resource/new_delete_resource.cc:
2340         Adjust expected allocation sizes.
2341         * testsuite/experimental/memory_resource/resource_adaptor.cc: Remove
2342         xfail for Solaris x86.
2343
2344 2019-05-21  Thomas Rodgers  <trodgers@redhat.com>
2345
2346         LWG 3062 - Unnecessary decay_t in is_execution_policy_v
2347         * include/pstl/execution_defs.h (__enable_if_execution_policy):
2348         Use std::__remove_cvref_t when building with GCC.
2349
2350 2019-05-21  Jonathan Wakely  <jwakely@redhat.com>
2351
2352         PR libstdc++/90252
2353         * testsuite/lib/libstdc++.exp (check_effective_target_tbb-backend):
2354         Use "additional_flags" to pass -ltbb to v3_target_compile command.
2355         Use check_v3_target_prop_cached to cache the result of the test.
2356
2357         * doc/xml/manual/shared_ptr.xml: Fix names of lock policy constants.
2358
2359 2019-05-20  Thomas Rodgers  <trodgers@redhat.com>
2360
2361         PR libstdc++/90252
2362         * testsuite/lib/libstdc++.exp (check_effective_target_tbb-backend):
2363         Changed v3_target_compile check from preprocess to executable.
2364         Added "-ltbb" to v3_target_compile flags.
2365
2366 2019-05-20  Thomas Rodgers  <trodgers@redhat.com>
2367
2368         * testsuite/lib/libstdc++.exp (check_effective_target_tbb-backend):
2369         Add check for Thread Building Blocks 2018 or later.
2370
2371 2019-05-20  Jonathan Wakely  <jwakely@redhat.com>
2372
2373         * testsuite/experimental/names.cc: Only include Networking TS headers
2374         on targets with the necessary Gthreads support.
2375
2376 2019-05-20  Marek Polacek  <polacek@redhat.com>
2377
2378         CWG 2094 - volatile scalars are trivially copyable.
2379         PR c++/85679
2380         * testsuite/20_util/is_trivially_copyable/value.cc: Change the expected
2381         result for volatile int.
2382
2383 2019-05-20  Jonathan Wakely  <jwakely@redhat.com>
2384
2385         * testsuite/17_intro/names.cc: Do not check 'ptr' on Solaris.
2386         * testsuite/experimental/names.cc: Include <experimental/filesystem>
2387         conditionally.
2388
2389         PR c++/90532 Ensure __is_constructible(T[]) is false
2390         * include/std/type_traits (__do_is_default_constructible_impl)
2391         (__is_default_constructible_atom, __is_default_constructible_safe):
2392         Remove.
2393         (is_default_constructible): Use is_constructible.
2394         * testsuite/20_util/is_constructible/value.cc: Check int[] case.
2395         * testsuite/20_util/is_default_constructible/value.cc: Likewise.
2396         * testsuite/20_util/is_trivially_constructible/value.cc: Likewise.
2397         * testsuite/20_util/is_trivially_default_constructible/value.cc:
2398         Likewise.
2399
2400 2019-05-20  Pádraig Brady  <pbrady@fb.com>
2401
2402         * libstdc++-v3/include/ext/new_allocator.h (deallocate): Pass the size
2403         to the deallocator with -fsized-deallocation.
2404
2405 2019-05-20  Jonathan Wakely  <jwakely@redhat.com>
2406
2407         * testsuite/experimental/memory_resource/new_delete_resource.cc: Fix
2408         test by passing correct alignment to deallocate function.
2409
2410 2019-05-18  Jonathan Wakely  <jwakely@redhat.com>
2411
2412         PR libstdc++/90520
2413         * python/libstdcxx/v6/printers.py (UniquePointerPrinter.__init__):
2414         Raise exception if unique_ptr tuple member has unknown structure.
2415         * python/libstdcxx/v6/xmethods.py (UniquePtrGetWorker.__call__):
2416         Adjust worker to support new __uniq_ptr_data base class. Do not
2417         assume field called _M_head_impl is the first tuple element.
2418
2419 2019-05-17  François Dumont  <fdumont@gcc.gnu.org>
2420
2421         * include/bits/stl_deque.h
2422         (_Deque_iterator<>::__ptr_to): Remove, use std::__ptr_rebind.
2423         (_Deque_base(_Deque_base&&, const allocator_type&)): New.
2424         (_Deque_base::_Deque_impl_data): New.
2425         (_Deque_base::_Deque_impl): Inherit latter.
2426         (_Deque_base::_Deque_impl::_M_swap_data): Move...
2427         (_Deque_base::_Deque_impl_data::_M_swap_data): ... here.
2428         (_Deque_base::_Deque_impl()): Add noexcept qualification.
2429         (_Deque_base::_Deque_impl(_Deque_impl&&, _Tp_alloc_type&&)): New.
2430         (_Deque_base::_Deque_impl::_M_get_Tp_allocator()): Remove static_cast.
2431         (deque<>::deque()): Default.
2432         (deque<>::deque(deque&&)): Default.
2433         (deque<>::deque(deque&&, const allocator_type&, false_type)): New.
2434         (deque<>::deque(deque&&, const allocator_type&, true_type)): New.
2435         (deque<>::deque(deque&&, const allocator_type&)): Delegate to latters.
2436         (deque<>::deque<_It>(_It, _It, const allocator_type&)): Use
2437         _M_range_initialize.
2438         (deque<>::assign<_It>(_It, _It)): Use _M_assign_aux.
2439         (deque<>::resize(size_type, const value_type&)): Share a single
2440         implementation.
2441         (deque<>::insert<_It>(const_iterator, _It, _It)): Use
2442         _M_range_insert_aux.
2443         [__cplusplus >= 201103L](_M_initialize_dispatch): Remove.
2444         [__cplusplus >= 201103L](_M_assign_dispatch): Remove.
2445         [__cplusplus >= 201103L](_M_insert_dispatch): Remove.
2446         * testsuite/23_containers/deque/allocator/default_init.cc: New.
2447
2448 2019-05-17  Jonathan Wakely  <jwakely@redhat.com>
2449
2450         PR libstdc++/90246
2451         * include/std/variant (holds_alternative, get, get_if): Improve
2452         static assertion messages.
2453         (bad_variant_access::bad_variant_access()): Change default message.
2454         (__throw_bad_variant_access(bool)): New overload.
2455         (get): Use new overload.
2456         (visit, visit<R>): Improve exception message.
2457
2458         * testsuite/20_util/variant/compile.cc: Fix narrowing test for ILP32
2459         targets. Add more cases from P0608R3.
2460         * testsuite/20_util/variant/run.cc: Add more cases from P0608R3.
2461
2462         * include/bits/random.h (seed_seq::param): Fix non-reserved name.
2463         * include/experimental/type_traits (is_detected_exact)
2464         (is_detected_exact_v): Likewise.
2465         * include/pstl/execution_defs.h (is_execution_policy)
2466         (is_execution_policy_v, __enable_if_execution_policy): Likewise.
2467         * include/pstl/execution_impl.h (__policy_traits): Likewise.
2468         * testsuite/17_intro/names.cc: Check for more non-reserved names.
2469         * testsuite/experimental/names.cc: New test.
2470
2471         PR libstdc++/85965
2472         * include/bits/hashtable.h (_Hashtable::~_Hashtable()): Remove static
2473         assertions from the destructor.
2474         * include/bits/hashtable_policy.h (_Hash_code_base::_M_hash_code):
2475         Move static_assert for hash function to here.
2476         (_Hash_table_base::_M_equals): Move static_assert for equality
2477         predicate to here.
2478         * include/bits/stl_tree.h (_Rb_tree::_S_value(_Const_Link_type)):
2479         Remove.
2480         (_Rb_tree::_S_key(_Const_Link_type)): Move assertions here. Access
2481         the value directly instead of calling _S_value.
2482         (_Rb_tree::_S_value(_Const_Base_ptr)): Remove.
2483         (_Rb_tree::_S_key(_Const_Base_ptr)): Do downcast and forward to
2484         _S_key(_Const_Link_type).
2485         * testsuite/23_containers/set/85965.cc: Check construction,
2486         destruction, assignment and size() do not trigger the assertions.
2487         * testsuite/23_containers/unordered_set/85965.cc: Likewise.
2488         * testsuite/23_containers/map/48101_neg.cc: Call find and adjust
2489         expected errors.
2490         * testsuite/23_containers/multimap/48101_neg.cc: Likewise.
2491         * testsuite/23_containers/multiset/48101_neg.cc: Likewise.
2492         * testsuite/23_containers/set/48101_neg.cc: Likewise.
2493         * testsuite/23_containers/unordered_map/48101_neg.cc: Likewise.
2494         * testsuite/23_containers/unordered_multimap/48101_neg.cc: Likewise.
2495         * testsuite/23_containers/unordered_multiset/48101_neg.cc: Likewise.
2496         * testsuite/23_containers/unordered_set/48101_neg.cc: Likewise.
2497
2498         * include/bits/invoke.h [__cplusplus < 201703L] (__invoke_r<void>):
2499         Use _GLIBCXX14_CONSTEXPR because void functions cannot be constexpr
2500         in C++11.
2501
2502         * doc/xml/manual/status_cxx2020.xml: Update P0608R3, P0777R1, and
2503         P1165R1 entries.
2504         * doc/html/*: Regenerate.
2505         * include/std/tuple (make_from_tuple): Use remove_reference_t instead
2506         of decay_t (P0777R1).
2507
2508 2019-05-17  François Dumont  <fdumont@gcc.gnu.org>
2509
2510         Move from state of allocators (LWG2593)
2511         * include/bits/stl_deque.h
2512         (_Deque_base(_Deque_base&&, false_type)): Remove.
2513         (_Deque_base(_Deque_base&&, true_type)): Remove.
2514         (_Deque_base(_Deque_base&&)): Adapt.
2515         (_Deque_base::_M_move_impl()): Remove.
2516         * testsuite/util/testsuite_allocator.h
2517         (propagating_allocator(propagating_allocator&&)): Preserve move from
2518         state.
2519         * testsuite/23_containers/deque/allocator/move_assign.cc (test02):
2520         Adapt.
2521         * testsuite/23_containers/forward_list/allocator/move_assign.cc (test02):
2522         Adapt.
2523         * testsuite/23_containers/list/allocator/move_assign.cc (test02): Adapt.
2524         * testsuite/23_containers/map/allocator/move_assign.cc (test02): Adapt.
2525         * testsuite/23_containers/multimap/allocator/move_assign.cc (test02):
2526         Adapt.
2527         * testsuite/23_containers/multiset/allocator/move_assign.cc (test02):
2528         Adapt.
2529         * testsuite/23_containers/set/allocator/move_assign.cc (test02): Adapt.
2530         * testsuite/23_containers/unordered_map/allocator/move_assign.cc
2531         (test02): Adapt.
2532         * testsuite/23_containers/unordered_multimap/allocator/move_assign.cc
2533         (test02): Adapt.
2534         * testsuite/23_containers/unordered_multiset/allocator/move_assign.cc
2535         (test02): Adapt.
2536         * testsuite/23_containers/unordered_set/allocator/move_assign.cc
2537         (test02): Adapt.
2538         * testsuite/23_containers/vector/allocator/move_assign.cc (test02):
2539         Adapt.
2540         * testsuite/23_containers/vector/bool/allocator/move_assign.cc (test02):
2541         Adapt.
2542         * testsuite/21_strings/basic_string/allocator/char/move_assign.cc
2543         (test02): Adapt.
2544         * testsuite/21_strings/basic_string/allocator/wchar_t/move_assign.cc
2545         (test02): Adapt.
2546
2547 2019-05-16  Jonathan Wakely  <jwakely@redhat.com>
2548
2549         * src/c++17/fs_ops.cc (absolute(const path&, error_code&))
2550         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Remove bogus assertion.
2551
2552         * include/std/variant (__overload_set): Remove.
2553         (_Arr): New helper.
2554         (_Build_FUN): New class template to define a single FUN overload,
2555         with specializations to prevent unwanted conversions, as per P0608R3.
2556         (_Build_FUNs): New class template to build an overload set of FUN.
2557         (_FUN_type): New alias template to perform overload resolution.
2558         (__accepted_type): Use integer_constant base for failure case. Use
2559         _FUN_type for successful case.
2560         (variant::__accepted_index): Use _Tp instead of _Tp&&.
2561         (variant::variant(_Tp&&)): Likewise.
2562         (variant::operator=(_Tp&&)): Likewise.
2563
2564         * include/std/variant (_Variant_storage<false, _Types...>::_M_reset):
2565         Replace raw visitation with a runtime check for the valueless state
2566         and a non-raw visitor.
2567         (_Variant_storage<false, _Types...>::_M_reset_impl): Remove.
2568         (variant::index()): Remove branch.
2569         (variant::swap(variant&)): Use valueless_by_exception() instead of
2570         comparing the index to variant_npos, and add likelihood attribute.
2571
2572         * include/bits/hashtable_policy.h (_Equal_helper): Remove.
2573         (_Hashtable_base::_Equal_hash_code): Define new class template.
2574         (_Hashtable_base::_M_equals): Use _Equal_hash_code instead of
2575         _Equal_helper.
2576
2577         * include/bits/hashtable_policy.h (_Hashtable_ebo_helper::_S_get):
2578         Replace with _M_get non-static member function.
2579         (_Hashtable_ebo_helper::_S_cget): Replace with _M_cget non-static
2580         member function.
2581         (_Hash_code_base, _Local_iterator_base, _Hashtable_base):
2582         (_Hashtable_alloc): Adjust to use non-static members of EBO helper.
2583
2584         * include/bits/hashtable_policy.h (_Hash_code_base::_M_swap): Use
2585         _S_get accessors for members in EBO helpers.
2586         (_Hash_code_base::_M_extract(), _Hash_code_base::_M_ranged_hash())
2587         (_Hash_code_base::_M_h1(), _Hash_code_base::_M_h2()): Remove non-const
2588         overloads.
2589         (_Hashtable_base::_M_swap): Use _S_get accessors for members in EBO
2590         helpers.
2591         (_Hashtable_base::_M_eq()): Remove non-const overload.
2592
2593 2019-05-15  Jonathan Wakely  <jwakely@redhat.com>
2594
2595         * include/std/variant (visit, visit<R>): Qualify calls to __do_visit.
2596
2597 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
2598
2599         * testsuite/util/testsuite_allocator.h (NullablePointer::operator bool):
2600         Fix return value.
2601
2602 2019-05-14  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
2603
2604         * config/os/solaris/solaris2.10: Move to ...
2605         * config/os/solaris: ... this.
2606         * configure.host (os_include_dir): Adapt.
2607         (abi_baseline_pair): Remove Solaris 10 handling.
2608         * config/abi/post/i386-solaris2.10: Remove.
2609         * config/abi/post/sparc-solaris2.10: Remove.
2610         * config/abi/post/i386-solaris2.11: Rename to ...
2611         * config/abi/post/i386-solaris: ... this.
2612         * config/abi/post/sparc-solaris2.11: Rename to ...
2613         * config/abi/post/sparc-solaris: ... this.
2614
2615         * libsupc++/new_opa.cc [_GLIBCXX_HAVE_MEMALIGN] [__sun]: Remove
2616         workaround.
2617
2618         * testsuite/ext/enc_filebuf/char/13598.cc: Remove *-*-solaris2.10
2619         xfail.
2620
2621 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
2622
2623         * include/std/variant (__visit_with_index): Remove typedef.
2624         (__deduce_visit_result): New tag type.
2625         (__raw_visit, __raw_idx_visit): New helper functions for "raw"
2626         visitation of possibly-valueless variants, forwarding to __do_visit
2627         with the relevant tag type.
2628         (_Variant_storage<false, _Types...>::_M_reset_impl): Use __raw_visit
2629         and make lambda return void.
2630         (__variant_construct): Likewise.
2631         (_Copy_assign_base::operator=, _Move_assign_base::operator=): Use
2632         __raw_idx_visit and make lambda return void.
2633         (_Multi_array::__untag_result): Add metafunction to check the function
2634         pointer type for a tag type that dictates the kind of visitation.
2635         (_Multi_array<_Ret(*)(_Visitor, _Variants...), __first, __rest...>):
2636         Use decltype(auto) instead of tagged function pointer type.
2637         (__gen_vtable_impl): Remove bool non-type parameter and unused
2638         _Variant_tuple parameter.
2639         (__gen_vtable_impl::__visit_invoke_impl): Remove.
2640         (__gen_vtable_impl::__do_visit_invoke): Remove.
2641         (__gen_vtable_impl::__do_visit_invoke_r): Remove.
2642         (__gen_vtable_impl::__visit_invoke): Use if-constexpr and __invoke_r
2643         for the visit<R> case, rather than dispatching to separate functions.
2644         (_VARIANT_RELATION_FUNCTION_TEMPLATE): Use __raw_idx_visit and make
2645         lambda return void.
2646         (variant::swap): Likewise.
2647         (__do_visit): Replace two non-type template parameters with a single
2648         type parameter, so that the caller must specify the visitor's return
2649         type (or one of the tag types).
2650         (visit): Deduce a return type from the visitor and use the
2651         __deduce_visit_result tag to enforce that all overloads return the
2652         same type.
2653         (visit<R>): Call __do_visit<R> with explicit result type.
2654         (__variant_hash_call_base_impl::operator()): Use __raw_visit and make
2655         lambda return void.
2656
2657 2019-05-14  Nina Dinka Ranns  <dinka.ranns@gmail.com>
2658
2659         nonesuch is insufficiently useless (lwg2996)
2660         * include/std/type_traits (struct __nonesuch): Added private base
2661         class to make __nonesuch not an aggregate and removed deleted default
2662         constructor.
2663         * include/bits/stl_pair.h (struct __nonesuch_no_braces): Removed.
2664         (operator=(const pair&)): Use __nonesuch instead of
2665         __nonesuch_no_braces.
2666         (operator=(pair&&)): Likewise
2667         * include/std/tuple (operator=(const tuple&)): Use __nonesuch instead
2668         of __nonesuch_no_braces.
2669         (operator=(tuple&&)): Likewise
2670         * include/experimental/type_traits (struct nonesuch): Added private
2671         base class to make nonesuch not an aggregate and removed deleted
2672         default constructor.
2673         * testsuite/20_util/nonesuch/nonesuch.cc: New.
2674         * testsuite/experimental/type_traits/nonesuch.cc: New.
2675
2676 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
2677
2678         * include/bits/std_function.h (_Simple_type_wrapper): Remove.
2679         (_Function_handler): Remove partial specializations for void return
2680         types and pointers to member.
2681         (_Function_handler::_M_manager): Adapt to removal of
2682         _Simple_type_wrapper.
2683         (_Function_handler::_M_invoke): Use __invoke_r instead of __invoke.
2684         * include/std/functional (_Bind_result::__enable_if_void)
2685         (_Bind_result::__disable_if_void): Remove sfinae helpers.
2686         (_Bind_result::__call): Use __invoke_r and remove overloads for void
2687         return types.
2688         * include/std/future (__future_base::_Task_state::_M_run)
2689         (__future_base::_Task_state::_M_run_delayed): Use __invoke_r and
2690         change return type of lambda expressions.
2691
2692         * include/bits/invoke.h (__invoke_r): Define new function implementing
2693         the INVOKE<R> pseudo-function.
2694         * testsuite/20_util/function_objects/invoke/1.cc: Add more tests.
2695         * testsuite/20_util/function_objects/invoke/2.cc: New test.
2696
2697         * include/std/type_traits (__is_nt_convertible_helper): Define it
2698         unconditionally, not only for C++20.
2699         (__is_nothrow_convertible): Define internal trait for use in C++11.
2700         (__is_nt_invocable_impl: Fix by using __is_nothrow_convertible.
2701         (is_invocable_r_v, is_nothrow_invocable_r_v): Add missing parameter.
2702         * testsuite/20_util/is_nothrow_convertible/value_ext.cc: New test.
2703         * testsuite/20_util/is_nothrow_convertible/value.cc: Check with type
2704         that has nothrow explicit conversion but potentially-throwing implicit
2705         conversion.
2706         * testsuite/20_util/is_nothrow_invocable/value.cc: Likewise.
2707         * testsuite/20_util/is_nothrow_invocable/value_ext.cc: Fix helper
2708         function to only consider implicit conversions.
2709         * testsuite/20_util/tuple/cons/noexcept_specs.cc: Add comment.
2710
2711         * include/std/iterator: Include <iosfwd> instead of <istream> and
2712         <ostream>.
2713
2714         * include/bits/stl_tree.h (_Rb_tree::erase(const Key*, const Key*)):
2715         Remove unused, non-standard function.
2716
2717         * include/bits/regex.h (match_results::max_size()): Adjust return
2718         value to account for prefix/suffix/unmatched subs.
2719         (match_results::_M_resize(unsigned int)): Use _Base_type::assign to
2720         reset the contained sub matches.
2721         (match_results::_M_establish_failed_match(_Bi_iter)): Add new member
2722         function to set result state following a failed match.
2723         * include/bits/regex.tcc (__regex_algo_impl): Remove loop to set
2724         sub_match states after _M_resize. Use _M_establish_failed_match.
2725
2726         PR libstdc++/69724
2727         * include/std/thread (thread::_State_impl, thread::_S_make_state):
2728         Replace single _Callable parameter with variadic _Args pack, to
2729         forward them directly to the tuple of decayed copies.
2730         * testsuite/30_threads/thread/cons/69724.cc: New test.
2731
2732 2019-05-14  Nina Dinka Ranns  <dinka.ranns@gmail.com>
2733
2734         Inconsistency wrt Allocators in basic_string assignment (LWG2579)
2735         * include/bits/basic_string.h: (operator=(const basic_string&):
2736         Move allocator decision to assign.
2737         (assign(const basic_string&)): Move allocator decision here.
2738         * testsuite/21_strings/basic_string/allocator/char/copy_assign.cc:
2739         Add tests.
2740         * testsuite/21_strings/basic_string/allocator/wchar_t/copy_assign.cc:
2741         Add tests.
2742
2743 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
2744
2745         * testsuite/util/testsuite_allocator.h (memory_resource)
2746         (default_resource_mgr): Fix indentation.
2747
2748         * testsuite/20_util/allocator_traits/members/allocate_hint_nonpod.cc:
2749         Use operator-> to access raw pointer member.
2750         * testsuite/23_containers/vector/59829.cc: Likewise.
2751         * testsuite/23_containers/vector/bool/80893.cc: Likewise.
2752         * testsuite/libstdc++-prettyprinters/cxx11.cc: Use NullablePointer.
2753         * testsuite/util/testsuite_allocator.h (NullablePointer): New utility
2754         for tests.
2755         (PointerBase, PointerBase_void): Derive from NullablePointer and use
2756         its constructors and equality operators. Change converting
2757         constructors to use operator-> to access private member of the other
2758         pointer type.
2759         (PointerBase_void::operator->()): Add, for access to private member.
2760         (operator-(PointerBase, PointerBase)): Change to hidden friend.
2761         (operator==(PointerBase, PointerBase)): Remove.
2762         (operator!=(PointerBase, PointerBase)): Remove.
2763
2764         * python/libstdcxx/v6/printers.py (UniquePointerPrinter.__init__): Do
2765         not assume field called _M_head_impl is the first tuple element.
2766         * testsuite/libstdc++-prettyprinters/compat.cc: Make tuple
2767         implementation more accurate.
2768         * testsuite/libstdc++-prettyprinters/cxx11.cc: Check unique_ptr with
2769         empty pointer type and non-empty deleter.
2770
2771         LWG 2899 - Make is_move_constructible correct for unique_ptr
2772         * include/bits/unique_ptr.h (__uniq_ptr_impl): Add move constructor,
2773         move assignment operator.
2774         (__uniq_ptr_impl::release(), __uniq_ptr_impl::reset(pointer)): Add.
2775         (__uniq_ptr_data): New class template with conditionally deleted
2776         special members.
2777         (unique_ptr, unique_ptr<T[], D>): Change type of data member from
2778         __uniq_ptr_impl<T, D> to __uniq_ptr_data<T, D>. Define move
2779         constructor and move assignment operator as defaulted.
2780         (unique_ptr::release(), unique_ptr<T[], D>::release()): Forward to
2781         __uniq_ptr_impl::release().
2782         (unique_ptr::reset(pointer), unique_ptr<T[], D>::reset<U>(U)): Forward
2783         to __uniq_ptr_impl::reset(pointer).
2784         * python/libstdcxx/v6/printers.py (UniquePointerPrinter.__init__):
2785         Check for new __uniq_ptr_data type.
2786         * testsuite/20_util/unique_ptr/dr2899.cc: New test.
2787
2788 2019-05-13  Jonathan Wakely  <jwakely@redhat.com>
2789
2790         PR libstdc++/90454.cc path construction from void*
2791         * include/bits/fs_path.h (path::_Path): Use remove_pointer so that
2792         pointers to void are rejected as well as void.
2793         * include/experimental/bits/fs_path.h (path::_Path): Likewise.
2794         * testsuite/27_io/filesystem/path/construct/80762.cc: Also check
2795         pointers to void.
2796         * testsuite/experimental/filesystem/path/construct/80762.cc: Likewise.
2797
2798         * doc/xml/manual/policy_data_structures.xml: Comment out stray
2799         <remark> elements. Fix formatting of bibliography references.
2800
2801 2019-05-13  Edward Smith-Rowland  <3dw4rd@verizon.net>
2802
2803         * doc/xml/manual/status_cxx2020.xml: Document P0811R3 status.
2804
2805 2019-05-13  Jonathan Wakely  <jwakely@redhat.com>
2806
2807         Remove Profile Mode, deprecated since 7.1.0
2808         * doc/Makefile.am: Remove XML file for profile mode docs.
2809         * doc/Makefile.in: Regenerate.
2810         * doc/xml/authors.xml: Remove authors of profile mode docs.
2811         * doc/xml/manual/appendix_contributing.xml: Remove mention of profile
2812         mode.
2813         * doc/xml/manual/debug.xml: Likewise.
2814         * doc/xml/manual/evolution.xml: Document removal of profile mode.
2815         * doc/xml/manual/profile_mode.xml: Remove profile mode docs.
2816         * doc/xml/manual/spine.xml: Remove profile mode author credit.
2817         * doc/xml/manual/test.xml: Remove docs for dg-require-profile-mode
2818         directive.
2819         * doc/xml/manual/using.xml: Remove docs for profile mode headers and
2820         macro.
2821         * doc/html/*: Regenerate.
2822         * include/Makefile.am: Remove profile mode headers.
2823         * include/Makefile.in: Regenerate.
2824         * include/bits/c++config (std::__profile): Remove namespace.
2825         [_GLIBCXX_PROFILE]: Remove checks for macro.
2826         * include/profile/array: Remove.
2827         * include/profile/base.h: Remove.
2828         * include/profile/bitset: Remove.
2829         * include/profile/deque: Remove.
2830         * include/profile/forward_list: Remove.
2831         * include/profile/impl/profiler.h: Remove.
2832         * include/profile/impl/profiler_algos.h: Remove.
2833         * include/profile/impl/profiler_container_size.h: Remove.
2834         * include/profile/impl/profiler_hash_func.h: Remove.
2835         * include/profile/impl/profiler_hashtable_size.h: Remove.
2836         * include/profile/impl/profiler_list_to_slist.h: Remove.
2837         * include/profile/impl/profiler_list_to_vector.h: Remove.
2838         * include/profile/impl/profiler_map_to_unordered_map.h: Remove.
2839         * include/profile/impl/profiler_node.h: Remove.
2840         * include/profile/impl/profiler_state.h: Remove.
2841         * include/profile/impl/profiler_trace.h: Remove.
2842         * include/profile/impl/profiler_vector_size.h: Remove.
2843         * include/profile/impl/profiler_vector_to_list.h: Remove.
2844         * include/profile/iterator_tracker.h: Remove.
2845         * include/profile/list: Remove.
2846         * include/profile/map: Remove.
2847         * include/profile/map.h: Remove.
2848         * include/profile/multimap.h: Remove.
2849         * include/profile/multiset.h: Remove.
2850         * include/profile/ordered_base.h: Remove.
2851         * include/profile/set: Remove.
2852         * include/profile/set.h: Remove.
2853         * include/profile/unordered_base.h: Remove.
2854         * include/profile/unordered_map: Remove.
2855         * include/profile/unordered_set: Remove.
2856         * include/profile/vector: Remove.
2857         * scripts/run_doxygen: Do not process profile mode headers.
2858         * testsuite/23_containers/array/element_access/60497.cc: Don't use
2859         profile mode type.
2860         * testsuite/23_containers/array/specialized_algorithms/swap_cxx17.cc:
2861         Remove dg-skip-if for profile mode.
2862         * testsuite/23_containers/forward_list/capacity/1.cc: Remove
2863         preprocessor check for profile mode.
2864         * testsuite/23_containers/list/capacity/29134.cc: Likewise.
2865         * testsuite/23_containers/map/modifiers/extract.cc: Remove dg-skip-if
2866         for profile mode.
2867         * testsuite/23_containers/map/modifiers/insert_or_assign/1.cc:
2868         Likewise.
2869         * testsuite/23_containers/map/modifiers/try_emplace/1.cc: Likewise.
2870         * testsuite/23_containers/multimap/modifiers/extract.cc: Likewise.
2871         * testsuite/23_containers/multiset/modifiers/extract.cc: Likewise.
2872         * testsuite/23_containers/set/modifiers/extract.cc: Likewise.
2873         * testsuite/23_containers/unordered_map/modifiers/extract.cc:
2874         Likewise.
2875         * testsuite/23_containers/unordered_multimap/modifiers/extract.cc:
2876         Likewise.
2877         * testsuite/23_containers/unordered_multiset/modifiers/extract.cc:
2878         Likewise.
2879         * testsuite/23_containers/unordered_set/modifiers/extract.cc:
2880         Likewise.
2881         * testsuite/23_containers/vector/bool/capacity/29134.cc: Remove
2882         preprocessor check for profile mode.
2883         * testsuite/23_containers/vector/bool/modifiers/insert/31370.cc:
2884         Likewise.
2885         * testsuite/23_containers/vector/modifiers/insert_vs_emplace.cc:
2886         Remove dg-skip-if for profile mode.
2887         * testsuite/25_algorithms/binary_search/partitioned.cc: Likewise.
2888         * testsuite/25_algorithms/equal_range/partitioned.cc: Likewise.
2889         * testsuite/25_algorithms/lexicographical_compare/71545.cc: Likewise.
2890         * testsuite/25_algorithms/lower_bound/partitioned.cc: Likewise.
2891         * testsuite/25_algorithms/upper_bound/partitioned.cc: Likewise.
2892         * testsuite/Makefile.am: Remove profile_flags variable and
2893         * testsuite/Makefile.am: Remove profile_flags variable and
2894         check-profile target.
2895         * testsuite/Makefile.in: Regenerate.
2896         * testsuite/ext/profile/all.cc: Remove.
2897         * testsuite/ext/profile/mutex_extensions_neg.cc: Remove.
2898         * testsuite/ext/profile/profiler_algos.cc: Remove.
2899         * testsuite/ext/profile/replace_new.cc: Remove.
2900         * testsuite/ext/throw_allocator/deallocate_global.cc: Remove
2901         preprocessor check for profile mode.
2902         * testsuite/ext/throw_allocator/deallocate_local.cc: Likewise.
2903         * testsuite/lib/libstdc++.exp (check_v3_target_profile_mode): Remove.
2904         (check_v3_target_normal_mode): Do not check for profile mode macro.
2905         * testsuite/libstdc++-prettyprinters/80276.cc: Remove dg-skip-if for
2906         profile mode.
2907         * testsuite/libstdc++-prettyprinters/compat.cc: Likewise.
2908         * testsuite/libstdc++-prettyprinters/cxx11.cc: Likewise.
2909         * testsuite/libstdc++-prettyprinters/cxx17.cc: Likewise.
2910         * testsuite/libstdc++-prettyprinters/debug.cc: Likewise.
2911         * testsuite/libstdc++-prettyprinters/debug_cxx11.cc: Likewise.
2912         * testsuite/libstdc++-prettyprinters/libfundts.cc: Likewise.
2913         * testsuite/libstdc++-prettyprinters/simple.cc: Likewise.
2914         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
2915         * testsuite/libstdc++-prettyprinters/whatis.cc: Likewise.
2916         * testsuite/libstdc++-prettyprinters/whatis2.cc: Likewise.
2917
2918         Remove array_allocator extension, deprecated since 4.9.0
2919         * doc/xml/manual/allocator.xml: Remove documentation for
2920         array_allocator.
2921         * doc/xml/manual/evolution.xml: Document array_allocator removal.
2922         * doc/xml/manual/using.xml: Remove header from documentation.
2923         * include/Makefile.am: Remove <ext/array_allocator.h> header.
2924         * include/Makefile.in: Regenerate.
2925         * include/ext/array_allocator.h: Remove.
2926         * include/precompiled/extc++.h: Do not include removed header.
2927         * testsuite/ext/array_allocator/1.cc: Remove.
2928         * testsuite/ext/array_allocator/2.cc: Remove.
2929         * testsuite/ext/array_allocator/26875.cc: Remove.
2930         * testsuite/ext/array_allocator/3.cc: Remove.
2931         * testsuite/ext/array_allocator/check_deallocate_null.cc: Remove.
2932         * testsuite/ext/array_allocator/check_delete.cc: Remove.
2933         * testsuite/ext/array_allocator/check_new.cc: Remove.
2934         * testsuite/ext/array_allocator/variadic_construct.cc: Remove.
2935         * testsuite/ext/headers.cc: Do not include removed header.
2936
2937 2019-05-11  François Dumont  <fdumont@gcc.gnu.org>
2938
2939         * include/bits/stl_bvector.h
2940         (operator==(const _Bit_iterator_base&, const _Bit_iterator_base&)):
2941         Make hidden friend.
2942         (operator<(const _Bit_iterator_base&, const _Bit_iterator_base&)):
2943         Likewise.
2944         (operator!=(const _Bit_iterator_base&, const _Bit_iterator_base&)):
2945         Likewise.
2946         (operator>(const _Bit_iterator_base&, const _Bit_iterator_base&)):
2947         Likewise.
2948         (operator<=(const _Bit_iterator_base&, const _Bit_iterator_base&)):
2949         Likewise.
2950         (operator>=(const _Bit_iterator_base&, const _Bit_iterator_base&)):
2951         Likewise.
2952         (operator-(const _Bit_iterator_base&, const _Bit_iterator_base&)):
2953         Likewise.
2954         (_Bit_iterator::operator+(difference_type)): Likewise and allow NRVO
2955         copy elision.
2956         (_Bit_iterator::operator-(difference_type)): Likewise.
2957         (operator+(ptrdiff_t, const _Bit_iterator&)): Make hidden friend.
2958         (_Bit_const_iterator::operator+(difference_type)): Likewise and allow
2959         NRVO copy elision.
2960         (_Bit_const_iterator::operator-(difference_type)): Likewise.
2961         (operator+(ptrdiff_t, const _Bit_const_iterator&)): Make hidden friend.
2962
2963 2019-05-10  Jonathan Wakely  <jwakely@redhat.com>
2964
2965         PR libstdc++/81266
2966         * testsuite/util/thread/all.h: Do not use remove_pointer for
2967         std::thread::native_handle_type.
2968
2969         PR libstdc++/90397
2970         * include/std/variant (_Variant_storage<false, Types...>::_M_storage())
2971         (_Variant_storage<true, Types...>::_M_reset()))
2972         (_Variant_storage<true, Types...>::_M_storage())): Add noexcept.
2973         (__get_storage): Likewise.
2974         (variant): Add noexcept to friend declarations for __get and
2975         __get_storage.
2976
2977         PR libstdc++/90388
2978         * include/bits/unique_ptr.h (default_delete, default_delete<T[]>):
2979         Use _Require for constraints.
2980         (operator>(nullptr_t, const unique_ptr<T,D>&)): Implement exactly as
2981         per the standard.
2982         (__uniq_ptr_hash): New base class with conditionally-disabled call
2983         operator.
2984         (hash<unique_ptr<T,D>>): Derive from __uniq_ptr_hash.
2985         * testsuite/20_util/default_delete/48631_neg.cc: Adjust dg-error line.
2986         * testsuite/20_util/unique_ptr/hash/90388.cc: New test.
2987
2988         * include/bits/shared_ptr.h: Improve docs.
2989         * include/bits/shared_ptr_base.h: Likewise.
2990         * include/bits/stl_uninitialized.h: Likewise.
2991         * include/bits/unique_ptr.h: Likewise.
2992         * libsupc++/new: Likewise.
2993
2994 2019-05-09  François Dumont  <fdumont@gcc.gnu.org>
2995
2996         * include/bits/stl_deque.h
2997         (operator==(const _Deque_iterator<>&, const _Deque_iterator<>&)):
2998         Make hidden friend.
2999         (operator!=(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3000         Likewise.
3001         (operator<(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3002         Likewise.
3003         (operator<=(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3004         Likewise.
3005         (operator>(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3006         Likewise.
3007         (operator>=(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3008         Likewise.
3009         (_Deque_iterator<>::operator+(difference_type)): Likewise and allow NRVO
3010         copy elision.
3011         (_Deque_iterator<>::operator-(difference_type)): Likewise.
3012
3013 2019-05-08  François Dumont  <fdumont@gcc.gnu.org>
3014
3015         PR libstdc++/90277
3016         * testsuite/23_containers/unordered_multiset/insert/24061-multiset.cc
3017         (test01): Reserve for number of insertions to avoid rehash during test.
3018         * testsuite/23_containers/unordered_multimap/insert/24061-multimap.cc
3019         (test01): Likewise.
3020         * testsuite/23_containers/unordered_multimap/insert/24061-multimap.cc
3021         (test01): Likewise.
3022         (test02): Likewise.
3023         (test03): Likewise.
3024
3025 2019-05-08  Jonathan Wakely  <jwakely@redhat.com>
3026
3027         * include/experimental/bits/fs_path.h: Improve docs.
3028         * include/experimental/bits/net.h: Fix wrong header name in comment.
3029         Do not document implementation details.
3030         * include/experimental/netfwd: Fix doxygen grouping.
3031
3032 2019-05-07  Jonathan Wakely  <jwakely@redhat.com>
3033
3034         * include/bits/stl_pair.h: Improve docs.
3035         * include/std/tuple: Likewise.
3036
3037         * doc/doxygen/doxygroups.cc (std::literals): Add documentation for
3038         inline namespace.
3039         * include/std/chrono: Improve docs.
3040         * include/std/ratio: Do not document implementation details.
3041         * testsuite/20_util/ratio/cons/cons_overflow_neg.cc: Adjust dg-error
3042         line numbers.
3043         * testsuite/20_util/ratio/operations/ops_overflow_neg.cc: Likewise.
3044
3045         PR libstdc++/89102
3046         * doc/xml/manual/intro.xml: Document DR 2408 and 2465 changes.
3047         * include/std/chrono (__duration_common_type_wrapper): Replace with ...
3048         (__duration_common_type): New helper.
3049         (common_type<chrono::duration<R1, P2>, chrono::duration<R2, P2>>): Use
3050         __duration_common_type.
3051         (__timepoint_common_type_wrapper): Replace with ...
3052         (__timepoint_common_type): New helper.
3053         (common_type<chrono::time_point<C, D2>, chrono::time_point<C, D2>>):
3054         Use __time_point_common_type.
3055         * include/std/type_traits (common_type<>): Define, as per LWG 2408.
3056         (__common_type_impl): If either argument is transformed by decay,
3057         use the common_type of the decayed types.
3058         (__common_type_impl<_Tp, _Up, _Tp, _Up>): If the types are already
3059         decayed, use __do_common_type_impl to get the common_type.
3060         (common_type<_Tp>): Use common_type<_Tp, _Tp>.
3061         (__do_member_type_wrapper, __member_type_wrapper)
3062         (__expanded_common_type_wrapper): Remove.
3063         (__common_type_pack, __common_type_fold): New helpers.
3064         (common_type<_Tp, _Up, _Vp...>): Use new helpers instead of
3065         __member_type_wrapper and __expanded_common_type_wrapper.
3066         * testsuite/20_util/common_type/requirements/explicit_instantiation.cc:
3067         Test zero-length template argument list.
3068         * testsuite/20_util/common_type/requirements/sfinae_friendly_1.cc:
3069         Test single argument cases and argument types that should decay.
3070         * testsuite/20_util/common_type/requirements/sfinae_friendly_2.cc:
3071         Adjust expected error.
3072         * testsuite/20_util/duration/literals/range_neg.cc: Use zero for
3073         dg-error lineno.
3074         * testsuite/20_util/duration/requirements/typedefs_neg1.cc: Likewise.
3075         * testsuite/20_util/duration/requirements/typedefs_neg2.cc: Likewise.
3076         * testsuite/20_util/duration/requirements/typedefs_neg3.cc: Likewise.
3077
3078         * doc/xml/manual/intro.xml: Fix DR 2537 and DR 2566 confusion.
3079
3080 2019-05-01  Nina Dinka Ranns  <dinka.ranns@gmail.com>
3081
3082         Make allocator propagation more consistent for
3083         operator+(basic_string) (P1165R1)
3084         * include/bits/basic_string.h
3085         (operator+(basic_string&&, basic_string&&): Changed resulting
3086         allocator to always be the one from the first parameter.
3087         * include/bits/basic_string.tcc
3088         (operator+(const _CharT*, const basic_string&)): Changed
3089         resulting allocator to be SOCCC on the second parameter's allocator.
3090         (operator+(_CharT, const basic_string&)): Likewise.
3091         * testsuite/21_strings/basic_string/allocator/char/operator_plus.cc:
3092         New.
3093         * testsuite/21_strings/basic_string/allocator/wchar_t/operator_plus.cc:
3094         New.
3095
3096 2019-05-07  Jonathan Wakely  <jwakely@redhat.com>
3097
3098         * include/bits/regex.h: Improve docs.
3099         * include/bits/regex.tcc: Do not document implementation details.
3100
3101         * testsuite/19_diagnostics/error_code/hash.cc: New test.
3102
3103 2019-05-06  François Dumont  <fdumont@gcc.gnu.org>
3104
3105         * python/libstdcxx/v6/printers.py (add_one_template_type_printer):
3106         Add type printer for container types in std::__debug namespace.
3107         * testsuite/lib/gdb-test.exp (whatis-regexp-test): New.
3108         (gdb-tests): Use distinct parameters for the type of test and use of
3109         regex.
3110         (gdb-test): Check for regex test even if 'whatis' test.
3111         * testsuite/libstdc++-prettyprinters/80276.cc: Adapt for _GLIBCXX_DEBUG
3112         mode.
3113         * testsuite/libstdc++-prettyprinters/cxx11.cc: Likewise.
3114         * testsuite/libstdc++-prettyprinters/cxx17.cc: Likewise.
3115         * testsuite/libstdc++-prettyprinters/libfundts.cc: Likewise.
3116         * testsuite/libstdc++-prettyprinters/simple.cc: Likewise.
3117         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
3118         * testsuite/libstdc++-prettyprinters/whatis.cc: Likewise.
3119         * testsuite/libstdc++-prettyprinters/whatis2.cc: Likewise.
3120
3121 2019-05-04  Jonathan Wakely  <jwakely@redhat.com>
3122
3123         * include/std/system_error (error_category): Fix comment.
3124
3125         PR libstdc++/90299
3126         * src/c++17/fs_ops.cc (absolute(const path&)): Report an error if the
3127         argument is an empty path.
3128         (absolute(const path&, error_code&)): Use invalid_argument as error
3129         code instead of no_such_file_or_directory.
3130         * testsuite/27_io/filesystem/operations/absolute.cc: Check handling
3131         of non-existent paths and empty paths with both overloads of absolute.
3132
3133         * include/std/system_error (error_category, error_code)
3134         (error_condition): Improve docs.
3135         * libsupc++/exception: Add missing @addtogroup Doxygen command.
3136         * libsupc++/exception_ptr.h (exception_ptr): Link equality operators
3137         to class documentation. Suppress documentation for implementation
3138         details.
3139         * libsupc++/nested_exception.h (throw_with_nested, rethrow_if_nested):
3140         Suppress documentation for implementation details.
3141
3142         * include/std/system_error (error_code): Remove friend declaration
3143         for hash<error_code>.
3144         (hash<error_code>::operator()): Use public member functions to access
3145         value and category.
3146         (hash<error_condition>::operator()): Use address of category, not
3147         its object representation.
3148         * src/c++11/compatibility-c++0x.cc (hash<error_code>::operator()):
3149         Use public member functions to access value and category.
3150         * testsuite/19_diagnostics/error_condition/hash.cc: New test.
3151
3152 2019-05-04  François Dumont  <fdumont@gcc.gnu.org>
3153
3154         * include/bits/hashtable.h (_Hashtable<>::rehash): Review comment.
3155         * include/bits/hashtable_policy.h
3156         (_Prime_rehash_policy::_M_bkt_for_elements): Use __builtin_ceill.
3157         (_Power2_rehash_policy::_M_bkt_for_elements): Likewise.
3158         (_Power2_rehash_policy::_M_next_bkt): Enforce returning a result not
3159         smaller than input value rather than always greater. Preserve
3160         _M_next_resize if called with 0 input. Use __builtin_floorl.
3161         (_Power2_rehash_policy::_M_need_rehash): Rehash only if number of
3162         elements + number of insertions is greater than _M_next_resize. Start
3163         with 11 buckets if not told otherwise. Use __builtin_floorl.
3164         (_Rehash_base<>::reserve): Use rehash policy _M_bkt_for_elements.
3165         * src/c++11/hashtable_c++0x.cc (_Prime_rehash_policy::_M_next_bkt):
3166         Preserve _M_next_resize if called with 0 input. Use __builtin_floorl.
3167         (_Prime_rehash_policy::_M_need_rehash): Start with 11 buckets if not
3168         told otherwise. Use __builtin_floorl.
3169         * testsuite/23_containers/unordered_set/hash_policy/71181.cc: Adapt test
3170         to also validate _Power2_rehash_policy.
3171         * testsuite/23_containers/unordered_set/hash_policy/power2_rehash.cc:
3172         Adapt.
3173
3174 2019-05-03  Jonathan Wakely  <jwakely@redhat.com>
3175
3176         PR libstdc++/61761
3177         * testsuite/26_numerics/complex/proj.cc: Don't assume <cmath> defines
3178         std::copysign.
3179
3180         PR libstdc++/52119
3181         * include/ext/numeric_traits.h (__glibcxx_min): Avoid integer
3182         overflow warning with -Wpedantic -Wsystem-headers.
3183
3184 2019-05-02  Jonathan Wakely  <jwakely@redhat.com>
3185
3186         PR libstdc++/90314
3187         * include/bits/c++config (_GLIBCXX_NOEXCEPT_IF): Use variadic macro.
3188         * include/bits/move.h (swap): Remove extra parentheses.
3189
3190         * include/experimental/bits/lfts_config.h: Improve doc markup.
3191         * include/experimental/optional: Improve docs.
3192         (_Has_addressof_mem, _Has_addressof_free, _Has_addressof)
3193         (__constexpr_addressof): Remove.
3194         (optional::operator->()): Use std::__addressof().
3195         * include/std/optional (optional::operator->()): Adjust whitespace.
3196         * testsuite/experimental/optional/constexpr/observers/2.cc: Check
3197         that operator-> is still constexpr with overloaded operator&. Change
3198         to compile-only test.
3199         * testsuite/experimental/optional/constexpr/observers/3.cc: Change to
3200         compile-only test.
3201
3202         * include/bits/shared_ptr.h: Improve docs.
3203         * include/bits/shared_ptr_atomic.h: Likewise.
3204         * include/bits/unique_ptr.h: Likewise. Adjust whitespace.
3205
3206         * include/bits/basic_string.h: Fix iterator/index confusion in
3207         Doxygen comments.
3208         * include/bits/range_access.h: Fix Doxygen warnings.
3209         * include/bits/refwrap.h: Do not document implementation details.
3210         (ref, cref): Group docs with reference_wrapper.
3211         * include/std/fstream: Fix Doxygen markup.
3212         * libsupc++/initializer_list (begin, end): Group docs with
3213         initializer_list.
3214
3215         * doc/doxygen/user.cfg.in: Set MARKDOWN_SUPPORT=YES.
3216
3217         * include/bits/unique_lock.h: Fix/improve doxygen markup.
3218         * include/std/mutex: Likewise.
3219         * include/std/shared_mutex: Likewise.
3220
3221         * include/bits/fs_dir.h: Fix/improve doxygen markup.
3222         * include/bits/fs_fwd.h: Likewise.
3223         * include/bits/fs_ops.h: Likewise.
3224         * include/bits/fs_path.h: Likewise.
3225         * include/std/filesystem: Likewise.
3226
3227         * include/experimental/bits/net.h: Fix/improve doxygen markup.
3228         * include/experimental/buffer: Likewise.
3229         * include/experimental/executor: Likewise.
3230         * include/experimental/internet: Likewise.
3231         * include/experimental/io_context: Likewise.
3232         * include/experimental/net: Likewise.
3233         * include/experimental/netfwd: Likewise.
3234         * include/experimental/socket: Likewise.
3235         * include/experimental/timer: Likewise.
3236
3237         * doc/doxygen/doxygroups.cc: Move description of experimental group
3238         here.
3239         * include/experimental/algorithm: Add to libfund-ts doc group.
3240         * include/experimental/any: Likewise. Do not document implementation
3241         details.
3242         * include/experimental/array: Add to libfund-ts doc group.
3243         * include/experimental/bits/lfts_config.h: Define libfund-ts doc group
3244         for Library Fundamentals.
3245         * include/experimental/chrono: Add to libfund-ts doc group.
3246         * include/experimental/deque: Likewise.
3247         * include/experimental/forward_list: Likewise.
3248         * include/experimental/functional: Likewise.
3249         * include/experimental/iterator: Likewise.
3250         * include/experimental/list: Likewise.
3251         * include/experimental/map: Likewise.
3252         * include/experimental/memory: Likewise.
3253         * include/experimental/memory_resource: Likewise. Improve docs.
3254         details.
3255         * include/experimental/numeric: Add to libfund-ts doc group.
3256         * include/experimental/optional: Likewise.
3257         * include/experimental/propagate_const: Likewise.
3258         * include/experimental/random: Likewise.
3259         * include/experimental/ratio: Likewise.
3260         * include/experimental/regex: Likewise.
3261         * include/experimental/set: Likewise.
3262         * include/experimental/source_location: Likewise.
3263         * include/experimental/string: Likewise.
3264         * include/experimental/string_view: Likewise.
3265         * include/experimental/system_error: Likewise.
3266         * include/experimental/tuple: Likewise.
3267         * include/experimental/type_traits: Likewise.
3268         * include/experimental/unordered_map: Likewise.
3269         * include/experimental/unordered_set: Likewise.
3270         * include/experimental/utility: Likewise.
3271         * include/experimental/vector: Likewise.
3272         * testsuite/experimental/any/misc/any_cast_neg.cc: Adjust dg-error.
3273         * testsuite/experimental/array/neg.cc: Adjust dg-error.
3274         * testsuite/experimental/propagate_const/assignment/move_neg.cc:
3275         Likewise.
3276         * testsuite/experimental/propagate_const/cons/move_neg.cc: Likewise.
3277         * testsuite/experimental/propagate_const/requirements2.cc: Likewise.
3278         * testsuite/experimental/propagate_const/requirements3.cc: Likewise.
3279         * testsuite/experimental/propagate_const/requirements4.cc: Likewise.
3280         * testsuite/experimental/propagate_const/requirements5.cc: Likewise.
3281
3282         * include/experimental/bits/fs_dir.h: Fix Doxygen markup.
3283         * include/experimental/bits/fs_fwd.h: Improve docs.
3284         * include/experimental/bits/fs_ops.h: fix Doxygen markup.
3285         * include/experimental/bits/fs_path.h: Likewise.
3286         (path, filesystem_error, u8path): Improve docs.
3287         * include/experimental/filesystem: Link to docs for TS.
3288
3289         * config/allocator/new_allocator_base.h (__allocator_base): Add
3290         workaround for Doxygen bug #6945.
3291         * include/std/memory: Improve docs. Define group for pointer safety.
3292         * include/std/scoped_allocator: Improve docs. Use "undocumented"
3293         conditional to suppress documentation for implementation details.
3294
3295         * include/bits/specfun.h: Improve docs.
3296         * include/tr1/cmath: Likewise. Fix nesting of preprocessor conditions
3297         and namespaces.
3298
3299         * doc/doxygen/doxygroups.cc (std::tr2, std::__gnu_cxx): Improve docs.
3300         (std::experimental): Add docs.
3301         * doc/doxygen/user.cfg.in (PREDEFINED): Expand macros for __cxx11
3302         namespace to nothing when generating docs.
3303         * include/bits/regex_constants.h (std::regex_constants): Improve docs.
3304         * include/std/chrono (std::chrono): Likewise.
3305         * include/std/functional (std::placeholders): Likewise.
3306         * include/std/thread (std::this_thread): Likewise.
3307
3308         * include/parallel/settings.h: Fix Doxygen markup.
3309
3310         * include/ext/pb_ds/detail/bin_search_tree_/*_imps.hpp: Do not define
3311         anything unless PB_DS_CLASS_C_DEC is defined.
3312         * include/ext/pb_ds/detail/binary_heap_/*_imps.hpp: Likewise.
3313         * include/ext/pb_ds/detail/binomial_heap_/*_imps.hpp: Likewise.
3314         * include/ext/pb_ds/detail/binomial_heap_base_/*_imps.hpp: Likewise.
3315         * include/ext/pb_ds/detail/cc_hash_table_map_/*_imps.hpp: Likewise.
3316         * include/ext/pb_ds/detail/gp_hash_table_map_/*_imps.hpp: Likewise.
3317         * include/ext/pb_ds/detail/hash_fn/*_imp.hpp: Likewise.
3318         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/*_imps.hpp:
3319         Likewise.
3320         * include/ext/pb_ds/detail/list_update_map_/*_imps.hpp: Likewise.
3321         * include/ext/pb_ds/detail/ov_tree_map_/*_imps.hpp: Likewise.
3322         * include/ext/pb_ds/detail/pairing_heap_/*_imps.hpp: Likewise.
3323         * include/ext/pb_ds/detail/pat_trie_/*_imps.hpp: Likewise.
3324         * include/ext/pb_ds/detail/rb_tree_map_/*_imps.hpp: Likewise.
3325         * include/ext/pb_ds/detail/rc_binomial_heap_/*_imps.hpp: Likewise.
3326         * include/ext/pb_ds/detail/resize_policy*_imp.hpp: Likewise.
3327         * include/ext/pb_ds/detail/splay_tree_/*_imps.hpp: Likewise.
3328         * include/ext/pb_ds/detail/thin_heap_/*_imps.hpp: Likewise.
3329         * include/ext/pb_ds/detail/trie_policy*_imp.hpp: Likewise.
3330         * include/ext/pb_ds/detail/unordered_iterator/const_iterator.hpp:
3331         Likewise.
3332         * include/ext/pb_ds/detail/unordered_iterator/iterator.hpp: Likewise.
3333         * include/ext/pb_ds/detail/unordered_iterator/point_const_iterator.hpp:
3334         Likewise.
3335         * include/ext/pb_ds/detail/unordered_iterator/point_iterator.hpp:
3336         Likewise.
3337
3338         * doc/doxygen/user.cfg.in: Regenerate with Doxygen 1.8.14 and set
3339         GROUP_NESTED_COMPOUNDS=YES and SORT_BY_SCOPE_NAME=NO. Add various
3340         _GLIBCXX_xxx macros and __attribute__(X) to PREDEFINED macros that
3341         Doxygen expands.
3342
3343 2019-05-01  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
3344
3345         * config/abi/post/i386-solaris2.10/baseline_symbols.txt: Regenerate.
3346         * config/abi/post/i386-solaris2.10/amd64/baseline_symbols.txt: Likewise.
3347         * config/abi/post/i386-solaris2.11/baseline_symbols.txt: Likewise.
3348         * config/abi/post/i386-solaris2.11/amd64/baseline_symbols.txt: Likewise.
3349         * config/abi/post/sparc-solaris2.10/baseline_symbols.txt: Likewise.
3350         * config/abi/post/sparc-solaris2.10/sparcv9/baseline_symbols.txt:
3351         Likewise.
3352         * config/abi/post/sparc-solaris2.11/baseline_symbols.txt: Likewise.
3353         * config/abi/post/sparc-solaris2.11/sparcv9/baseline_symbols.txt:
3354         Likewise.
3355
3356 2019-05-01  Jonathan Wakely  <jwakely@redhat.com>
3357
3358         PR libstdc++/61761
3359         * include/std/complex (__complex_proj): Return parameter unchanged.
3360         [_GLIBCXX_USE_C99_COMPLEX] (__complex_proj): Change overloads for
3361         floating-point types to take std::complex arguments.
3362         [_GLIBCXX_USE_C99_MATH_TR1] (__complex_proj): Add overloads for
3363         floating-point types.
3364         * testsuite/26_numerics/complex/proj.cc: New test.
3365
3366 2019-04-30  Jakub Jelinek  <jakub@redhat.com>
3367
3368         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Change _Lock_policyE2 exports
3369         to _Lock_policyE[012].
3370         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
3371
3372 2019-04-30  Jonathan Wakely  <jwakely@redhat.com>
3373
3374         * testsuite/27_io/filesystem/path/decompose/root_path.cc: Remove
3375         macros accidentally left in.
3376         * testsuite/27_io/filesystem/path/native/string-char8_t.cc: Remove
3377         unnecessary -lstdc++fs option. Fix test for mingw.
3378         * testsuite/experimental/filesystem/path/native/string-char8_t.cc:
3379         Fix test for mingw.
3380
3381 2019-04-30  Jakub Jelinek  <jakub@redhat.com>
3382
3383         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
3384
3385 2019-04-29  Jonathan Wakely  <jwakely@redhat.com>
3386
3387         * include/bits/stl_algo.h (generate_n): Adjust doxygen comment.
3388
3389         * include/bits/move.h (swap(T&, T&), swap(T (&)[N], T (&)[N])): Use
3390         _GLIBCXX_NOEXCEPT_IF to simplify declarations.
3391
3392         PR libstdc++/71312
3393         * src/c++11/shared_ptr.cc (get_mutex): Align pool mutexes to 64 bytes.
3394
3395         * include/bits/stl_bvector.h (vector<bool>::empty()): Add nodiscard
3396         attribute.
3397
3398         * include/bits/stl_iterator_base_types.h (_Iter_base): Remove unused
3399         class template and partial specialization.
3400
3401         PR libstdc++/87982
3402         * include/bits/stl_algo.h (generate_n): Convert _Size parameter to
3403         an integral type.
3404         * include/bits/stl_algobase.h (__size_to_integer): New overloaded
3405         functions to convert a value to an integral type.
3406         (__fill_n_a, __fill_n_a): Assert that __n is already an integral type.
3407         (fill_n): Convert _Size parameter to an integral type.
3408         * testsuite/25_algorithms/fill_n/87982.cc: New test.
3409         * testsuite/25_algorithms/fill_n/87982_neg.cc: New test.
3410         * testsuite/25_algorithms/fill_n/dr426.cc: New test.
3411         * testsuite/25_algorithms/generate_n/87982.cc: New test.
3412         * testsuite/25_algorithms/generate_n/87982_neg.cc: New test.
3413         * testsuite/25_algorithms/generate_n/dr426.cc: New test.
3414
3415 2019-04-28  Nina Dinka Ranns  <dinka.ranns@gmail.com>
3416
3417         Adding noexcept-specification on tuple constructors (LWG 2899)
3418         * libstdc++-v3/include/std/tuple:
3419         (tuple()): Add noexcept-specification.
3420         (tuple(const _Elements&...)): Likewise
3421         (tuple(_UElements&&...)): Likewise
3422         (tuple(const tuple<_UElements...>&)): Likewise
3423         (tuple(tuple<_UElements...>&&)): Likewise
3424         (tuple(const _T1&, const _T2&)): Likewise
3425         (tuple(_U1&&, _U2&&)): Likewise
3426         (tuple(const tuple<_U1, _U2>&): Likewise
3427         (tuple(tuple<_U1, _U2>&&): Likewise
3428         (tuple(const pair<_U1, _U2>&): Likewise
3429         (tuple(pair<_U1, _U2>&&): Likewise
3430         * libstdc++-v3/testsuite/20_util/tuple/cons/noexcept_specs.cc: New
3431
3432 2019-04-27  Marc Glisse  <marc.glisse@inria.fr>
3433
3434         PR libstdc++/87106
3435         * include/bits/stl_uninitialized.h (__relocate_object_a): Mark the
3436         arguments with __restrict.
3437
3438 2019-04-26  H.J. Lu  <hongjiu.lu@intel.com>
3439
3440         * config/abi/post/x86_64-linux-gnu/x32/baseline_symbols.txt: Updated.
3441
3442 2019-04-26  Jonathan Wakely  <jwakely@redhat.com>
3443
3444         * include/experimental/bits/fs_path.h
3445         (path::_S_convert_loc<_InputIterator>): Create const std::string to
3446         avoid redundant call to _S_convert_loc with non-const pointers.
3447
3448         * testsuite/20_util/variant/run.cc: Use a new Hashable type to test
3449         hashing, because pmr::string depends on _GLIBCXX_USE_CXX11_ABI==1.
3450         * testsuite/21_strings/basic_string/hash/hash.cc
3451         [!_GLIBCXX_USE_CXX11_ABI]: Don't test pmr strings.
3452         * testsuite/21_strings/basic_string/hash/hash_char8_t.cc
3453         [!_GLIBCXX_USE_CXX11_ABI]: Likewise.
3454
3455         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Replace wildcard that matches
3456         wstring::_M_replace_dispatch with more specific patterns.
3457         * include/bits/fs_path.h (path::_S_convert_loc<_InputIterator>):
3458         Create const std::string to avoid redundant call to _S_convert_loc
3459         with non-const pointers.
3460         * include/bits/locale_conv.h (__do_str_codecvt): Use if-constexpr to
3461         avoid unnecessary basic_string::assign instantiations.
3462
3463         * include/std/memory (__uses_alloc_args): Add string-literal to
3464         static_assert, to match the one in __uses_alloc.
3465         [__cpp_concepts] (_Std_pair): Use C++2a syntax for concept.
3466         * testsuite/20_util/polymorphic_allocator/construct_c++2a.cc: Check
3467         for recursive uses-allocator construction of nested pairs.
3468         * testsuite/20_util/scoped_allocator/construct_pair_c++2a.cc:: Add
3469         comment.
3470
3471 2019-04-26  Jakub Jelinek  <jakub@redhat.com>
3472
3473         * config/abi/post/s390x-linux-gnu/32/baseline_symbols.txt: Update.
3474         * config/abi/post/s390-linux-gnu/baseline_symbols.txt: Update.
3475         * config/abi/post/powerpc-linux-gnu/baseline_symbols.txt: Update.
3476         * config/abi/post/powerpc64-linux-gnu/32/baseline_symbols.txt: Update.
3477
3478         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
3479         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
3480         * config/abi/post/i386-linux-gnu/baseline_symbols.txt: Update.
3481         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
3482         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
3483         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
3484         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
3485
3486 2019-04-25  Jonathan Wakely  <jwakely@redhat.com>
3487
3488         PR libstdc++/90239
3489         * doc/xml/manual/status_cxx2020.xml: Amend P0591R4 status.
3490         * include/std/scoped_allocator [__cplusplus > 201703L]
3491         (scoped_allocator_adaptor::construct): Define in terms of
3492         uses_allocator_construction_args, as per P0591R4.
3493         * testsuite/20_util/scoped_allocator/construct_pair_c++2a.cc: New test.
3494         * testsuite/util/testsuite_allocator.h: Remove name of unused
3495         parameter.
3496
3497 2019-04-24  Jonathan Wakely  <jwakely@redhat.com>
3498
3499         * doc/xml/manual/status_cxx2017.xml: Document P0024R2 status.
3500         * doc/html/*: Regenerate.
3501
3502         * include/bits/fs_path.h (operator<, operator<=, operator>)
3503         (operator>=, operator==, operator!=): Make hidden friends, as per
3504         LWG 3065.
3505         * testsuite/27_io/filesystem/path/native/string-char8_t.cc: Fix
3506         string type in test.
3507         * testsuite/27_io/filesystem/path/native/string.cc: Likewise.
3508
3509         * include/std/any (any::any(ValueType&&)): Use __and_v.
3510         * include/std/numeric (midpoint(T, T, T), midpoint(T*, T*, T*)):
3511         Likewise.
3512
3513         * include/std/tuple (apply): Use remove_reference_t instead of decay_t
3514         as per P0777R1.
3515         * include/std/type_traits (__result_of_memfun): Use remove_reference
3516         instead of __remove_cvref_t and remove redundant is_same check.
3517         (__inv_unwrap): Use __remove_cvref_t instead of decay_t.
3518
3519         * include/experimental/string_view (basic_string_view::pointer)
3520         (basic_string_view::reference): Fix to refer to non-const value_type.
3521         * include/bits/basic_string.h (basic_string): Use __sv_check and
3522         __sv_limit instead of basic_string_view::_M_check and
3523         basic_string_view::_M_limit.
3524         * include/std/string_view (__sv_check, __sv_limit): New
3525         helper functions to replace basic_string_view::_M_check and
3526         basic_string_view::_M_limit.
3527         (basic_string_view): Add static assertions to enforce ill-formed
3528         requirement for traits_type::char_type from P1148R0, and to enforce
3529         required properties of char-like types.
3530         (basic_string_view::pointer, basic_string_view::reference): Fix to
3531         refer to non-const value_type.
3532         (basic_string_view::operator[], basic_string_view::at)
3533         (basic_string_view::front, basic_string_view::back)
3534         (basic_string_view::data): Use const_reference and const_pointer
3535         typedefs for return types.
3536         (basic_string_view::_M_check, basic_string_view::_M_limit): Remove.
3537         (hash<wstring_view>): Fix argument_type typedef.
3538         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/
3539         char/1.cc: Fix expected return type of basic_string_view::data().
3540         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/
3541         wchar_t/1.cc: Likewise.
3542         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/
3543         char/1.cc: Likewise.
3544         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/
3545         wchar_t/1.cc: Likewise.
3546         * testsuite/21_strings/basic_string_view/requirements/traits_neg.cc:
3547         New test.
3548         * testsuite/21_strings/basic_string_view/requirements/typedefs.cc:
3549         Check reference and pointer typedefs.
3550         * testsuite/experimental/string_view/requirements/typedefs.cc:
3551         Likewise.
3552         * testsuite/experimental/string_view/modifiers/remove_prefix/char/1.cc:
3553         Fix expected return type of basic_string_view::data().
3554         * testsuite/experimental/string_view/modifiers/remove_prefix/wchar_t/
3555         1.cc: Likewise.
3556         * testsuite/experimental/string_view/modifiers/remove_suffix/char/1.cc:
3557         Likewise.
3558         * testsuite/experimental/string_view/modifiers/remove_suffix/wchar_t/
3559         1.cc: Likewise.
3560
3561         PR libstdc++/90220
3562         * include/std/any (__any_caster): Use remove_cv_t instead of decay_t.
3563         Avoid a runtime check for types that can never be stored in std::any.
3564         * testsuite/20_util/any/misc/any_cast.cc: Test std::any_cast with
3565         array types.
3566
3567         PR libstdc++/90220 (partial)
3568         * include/std/any (any_cast<T>(any*), any_cast<T>(const any*)): Do
3569         not attempt ill-formed static_cast to pointers to non-object types.
3570         * testsuite/20_util/any/misc/any_cast.cc: Test std::any_cast with
3571         function types.
3572
3573         * testsuite/20_util/variant/run.cc: Catch exception by reference to
3574         prevent -Wcatch-value warning.
3575
3576         * include/std/variant (__variant_construct): Use template parameter
3577         type instead of equivalent decltype-specifier.
3578         (_Move_ctor_base<false, Types...>::_Move_ctor_base(_Move_ctor_base&&)):
3579         Replace forward with move.
3580         (_Move_ctor_base<false, Types...>::_M_destructive_move)
3581         (_Move_ctor_base<false, Types...>::_M_destructive_copy)
3582         (_Move_ctor_base<true, Types...>::_M_destructive_move)
3583         (_Move_ctor_base<true, Types...>::_M_destructive_copy): Only set the
3584         index after construction succeeds.
3585         (_Copy_assign_base<false, Types...>::operator=): Remove redundant
3586         if-constexpr checks that are always true. Use __remove_cvref_t instead
3587         of remove_reference so that is_nothrow_move_constructible check
3588         doesn't use a const rvalue parameter. In the potentially-throwing case
3589         construct a temporary and move assign it, as per LWG 2904.
3590         (_Move_assign_base<false, Types...>::operator=): Remove redundant
3591         if-constexpr checks that are always true. Use emplace as per LWG 2904.
3592         (variant::operator=(T&&)): Only use emplace conditionally, otherwise
3593         construct a temporary and move assign from it, as per LWG 2904.
3594         * testsuite/20_util/variant/exception_safety.cc: Check that
3595         assignment operators have strong exception safety guarantee.
3596
3597 2019-04-23  Thomas Rodgers <trodgers@redhat.com>
3598
3599         Document PSTL linker flags
3600
3601         * doc/xml/manual/using.xml: Add PSTL linker flags to table 3.1.
3602
3603 2019-04-23  Jonathan Wakely  <jwakely@redhat.com>
3604
3605         * include/std/variant (__detail::__variant::_Traits): Make
3606         _S_trivial_copy_assign depend on _S_trivial_copy_ctor and make
3607         _S_trivial_move_assign depend on _S_trivial_move_ctor, as per
3608         P0602R4.
3609         (__detail::__variant::_Copy_assign_alias): Only depend on
3610         _S_trivial_copy_assign, which subsumes _S_trivial_copy_ctor now.
3611         * testsuite/20_util/variant/compile.cc: Correct checks for trivial
3612         move assignment operators.
3613
3614         PR libstdc++/90165
3615         * include/std/variant (variant::__not_self): New helper for the
3616         is_same_v<remove_cvref_t<T>, variant>==false constraints.
3617         (variant::__to_type_impl): Remove.
3618         (variant::__to_type): Add default argument to check pack size, instead
3619         of using __to_type_impl.
3620         (variant::__accepted_type): Add default argument using __not_self.
3621         (variant::__is_in_place_tag, variant::__not_in_place_tag): New helpers
3622         for variant(T&&) constructor constraint.
3623         (variant::variant(T&&)): Use __not_in_place_tag in constraints.
3624         Extract __accepted_type into a named template parameter for reuse in
3625         other constraints and in the exception specification.
3626         (variant::variant(in_place_type_t<T>, Args&&...))
3627         (variant::variant(in_place_type_t<T>, initializer_list<U>, Args&&...))
3628         (variant::variant(in_place_index_t<T>, Args&&...))
3629         (variant::variant(in_place_index_t<T>, initializer_list<U>, Args&&...))
3630         (variant::operator=T&&)): Remove redundant && from trait arguments.
3631         * testsuite/20_util/variant/compile.cc: Check variant(T&&) constructor
3632         isn't used for in_place_type or in_place_index arguments.
3633
3634         * include/std/type_traits (unwrap_reference_t): Define for C++2a.
3635         (unwrap_ref_decay): Remove inheritance from unwrap_reference.
3636         * testsuite/20_util/unwrap_reference/1.cc: Adjust test to use alias.
3637
3638 2019-04-23  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>
3639             Bernd Edlinger  <bernd.edlinger@hotmail.de>
3640             Jakub Jelinek  <jakub@redhat.com>
3641
3642         PR target/89093
3643         * libsupc++/eh_personality.cc (PERSONALITY_FUNCTION): Add
3644         general-regs-only target attribute for ARM.
3645
3646 2019-04-23  Jonathan Wakely  <jwakely@redhat.com>
3647
3648         PR libstdc++/87431
3649         * include/bits/basic_string.h (_Never_valueless_alt): Make partial
3650         specialization also depend on is_nothrow_move_constructible.
3651         * include/std/variant (__detail::__variant::__never_valueless()):
3652         Only true if the variant would have a move assignment operator.
3653         (__detail::__variant::_Variant_storage<false, T...>::_M_valid()):
3654         Check __never_valueless<T...>().
3655         (variant::emplace): Only perform non-throwing move assignments
3656         for never-valueless alternatives if the variant has a move assignment
3657         operator.
3658         * testsuite/20_util/variant/compile.cc: Check that never-valueless
3659         types can be emplaced into non-assignable variants.
3660         * testsuite/20_util/variant/run.cc: Check that never-valueless types
3661         don't get copied when emplaced into non-assignable variants.
3662
3663         * include/std/variant (__detail::__variant::__ref_cast): Remove
3664         unused function.
3665         (__detail::__variant::_Uninitialized::_M_get)
3666         (__detail::__variant::__get)
3667         (__gen_vtable_impl::__element_by_index_or_cookie): Add noexcept.
3668
3669 2019-04-21  Iain Sandoe  <iain@sandoe.co.uk>
3670
3671         * testsuite/17_intro/headers/c++1998/charset.cc: Skip for Darwin8
3672         to Darwin10.
3673         * testsuite/17_intro/headers/c++2011/charset.cc: Likewise.
3674         * testsuite/17_intro/headers/c++2014/charset.cc: Likewise.
3675         * testsuite/17_intro/headers/c++2017/charset.cc: Likewise.
3676         * testsuite/17_intro/headers/c++2020/charset.cc: Likewise.
3677
3678 2019-04-20  Thomas Rodgers <trodgers@redhat.com>
3679
3680         Delegate PSTL configuration to pstl/pstl_config.h
3681
3682         * include/bits/c++config: Remove explicit PSTL configuration
3683         macros and use definitions from <pstl/pstl_config.h>.
3684
3685 2019-04-20  Thomas Rodgers <trodgers@redhat.com>
3686
3687         Cleanup algorithm implementations
3688         * include/pstl/glue_algorithm_impl.h (stable_sort): Forward
3689         execution policy.
3690         (mismatch): Forward execution policy.
3691         (equal): Qualify call to std::equal().
3692         (partial_sort): Forward execution policy.
3693         (inplace_merge): Forward execution policy.
3694
3695 2019-04-19  Thomas Rodgers <trodgers@redhat.com>
3696
3697         Improve implementation of parallel equal()
3698         * include/pstl/algorithm_impl.h
3699         (__internal::__brick_equal): use "4 iterator" version of
3700         std::equal().
3701         (__internal::__brick_equal): use simd for random access
3702         iterators on unsequenced execution policies.
3703         (__internal::__pattern_equal): add "4 iterator" version
3704         (__internal::__pattern_equal): dispatch to simd __brick_equal
3705         for vector-only execution policies.
3706         (__internal::__pattern_equal): dispatch to __parallel_or for
3707         parallel execution policies.
3708         * include/pstl/glue_algorithm_impl.h
3709         (std::equal): dispatch to "4 iterator" version of
3710         __internal::__pattern_equal().
3711
3712 2019-04-17  Jonathan Wakely  <jwakely@redhat.com>
3713
3714         PR libstdc++/90105
3715         * include/bits/forward_list.h (operator==): Do not use operator!= to
3716         compare elements.
3717         (forward_list<T, A>::sort(Comp)): When elements are equal take the one
3718         earlier in the list, so that sort is stable.
3719         * testsuite/23_containers/forward_list/operations/90105.cc: New test.
3720         * testsuite/23_containers/forward_list/comparable.cc: Test with
3721         types that meet the minimum EqualityComparable and LessThanComparable
3722         requirements. Remove irrelevant comment.
3723
3724         * include/std/variant (__detail::__variant::_Traits::_S_copy_assign):
3725         Do not depend on whether all alternative types are move constructible.
3726         (__detail::__variant::_Copy_assign_base::operator=): Remove cv-quals
3727         from the operand when deciding whether to perform the assignment.
3728         * testsuite/20_util/variant/compile.cc (DeletedMoves): Define type
3729         with deleted move constructor and deleted move assignment operator.
3730         (default_ctor, copy_ctor, move_ctor, copy_assign, move_assign): Check
3731         behaviour of variants with DeletedMoves as an alternative.
3732         * testsuite/20_util/variant/run.cc (DeletedMoves): Define same type.
3733         (move_ctor, move_assign): Check that moving a variant with a
3734         DeletedMoves alternative falls back to copying instead of moving.
3735
3736         * testsuite/20_util/variant/compile.cc: Remove empty string literals
3737         from static_assert declarations.
3738
3739         * testsuite/20_util/variant/compile.cc (MoveCtorOnly): Fix type to
3740         actually match its name.
3741         (MoveCtorAndSwapOnly): Define new type that adds swap to MoveCtorOnly.
3742         (test_swap()): Fix result for MoveCtorOnly and check
3743         MoveCtorAndSwapOnly.
3744
3745         * include/std/optional (optional::value_or(U&&) &&): Add missing
3746         constexpr specifier.
3747         * testsuite/20_util/optional/constexpr/observers/4.cc: Check value_or
3748         for disengaged optionals and rvalue optionals.
3749         * testsuite/20_util/optional/observers/4.cc: Likewise.
3750
3751 2019-04-12  Thomas Rodgers  <trodgers@redhat.com>
3752
3753         * include/pstl/algorithm_impl.h: Uglify identfiers.
3754         * include/pstl/numeric_impl.h:  Uglify identfiers.
3755         * include/pstl/parallel_backend_tbb.h: Uglify identfiers.
3756
3757 2019-04-11  Thomas Rodgers  <trodgers@redhat.com>
3758
3759         * include/bits/c++config:
3760         Add definition for __PSTL_ASSERT.
3761         Add definition for __PSTL_ASSERT_MSG.
3762         * include/pstl/algorithm_impl.h: Replace use of assert().
3763         * include/pstl/numeric_impl.h: Replace use of assert().
3764         * include/pstl/parallel_backend_tbb.h:
3765         Replace use of assert().
3766         Replace use of __TBB_ASSERT().
3767         * include/pstl/parallel_backend_utils.h: Replace use of assert().
3768
3769 2019-04-11  Jonathan Wakely  <jwakely@redhat.com>
3770
3771         PR libstdc++/90046
3772         * src/c++17/memory_resource.cc
3773         (monotonic_buffer_resource::_Chunk::allocate): Increase alignment if
3774         needed to allow placing a _Chunk at the end of the buffer.
3775         (monotonic_buffer_resource::_M_new_buffer): Remove static_assert.
3776
3777 2019-04-10  Jonathan Wakely  <jwakely@redhat.com>
3778
3779         * doc/xml/faq.xml: Add information about emergency EH pool.
3780         * doc/xml/manual/debug.xml: Update list of memory debugging tools.
3781         Move outdated information on mt_allocator to a separate section.
3782         * doc/xml/manual/evolution.xml: Clarify that GLIBCXX_FORCE_NEW
3783         doesn't affect the default allocator.
3784
3785         * testsuite/lib/libstdc++.exp (check_v3_target_parallel_mode): Fix
3786         typo.
3787
3788         PR libstdc++/89851
3789         * testsuite/20_util/variant/89851.cc: New test.
3790
3791 2019-04-09  Jonathan Wakely  <jwakely@redhat.com>
3792
3793         * include/std/variant: Adjust whitespace. Add comments.
3794         (_Multi_array): Leave primary template undefined.
3795         (_Multi_array<_Tp>): Define partial specialization for base case of
3796         recursion.
3797         (__gen_vtable_impl, __gen_vtable): Remove redundant && from type
3798         which is always a reference.
3799         (__gen_vtable::_S_apply()): Remove function, inline body into
3800         default member initializer.
3801         * testsuite/20_util/variant/visit.cc: Test with noncopyable types.
3802
3803         * include/std/variant (__variant_idx_cookie): Add member type.
3804         (__visitor_result_type): Remove.
3805         (__do_visit): Use invoke_result instead of __visitor_result_type.
3806         * testsuite/20_util/variant/visit.cc: New test.
3807
3808         PR libstdc++/90008
3809         * include/std/variant (_VARIANT_RELATION_FUNCTION_TEMPLATE): Remove
3810         unused capture.
3811         * testsuite/20_util/variant/90008.cc: New test.
3812
3813 2019-04-09  Thomas Rodgers  <trodgers@redhat.com>
3814
3815         * include/pstl/algorithm_impl.h: Add namespace qualification.
3816         * include/pstl/execution_defs.h: Add namespace qualification.
3817         * include/pstl/execution_impl.h: Add namespace qualification.
3818         * include/pstl/numeric_impl.h: Add namespace qualification.
3819         * include/pstl/parallel_backend_tbb.h: Add namespace qualification.
3820         * include/pstl/unseq_backend_simd.h: Add namespace qualification.
3821         * include/pstl/parallel_backend_utils.h: Include <cassert>.
3822
3823 2019-04-08  Ville Voutilainen  <ville.voutilainen@gmail.com>
3824
3825         Fix visit<R> for variant.
3826         * include/std/variant (__do_visit): Add a template parameter
3827         for enforcing same return types for visit.
3828         (__gen_vtable_impl): Likewise.
3829         (_S_apply_single_alt): Adjust.
3830         (__visit_invoke_impl): New. Handle casting to void.
3831         (__do_visit_invoke): New. Enforces same return types.
3832         (__do_visit_invoke_r): New. Converts return types.
3833         (__visit_invoke): Adjust.
3834         (__gen_vtable):  Add a template parameter for enforcing
3835         same return types for visit.
3836         * testsuite/20_util/variant/visit_r.cc: Add a test for a visitor with
3837         different return types.
3838         * testsuite/20_util/variant/visit_neg.cc: New. Ensures that
3839         visitors with different return types don't accidentally
3840         compile with regular visitation.
3841
3842 2019-04-08  Christophe Lyon  <christophe.lyon@linaro.org>
3843
3844         * testsuite/27_io/filesystem/iterators/caching.cc: Add
3845         dg-require-filesystem-ts.
3846
3847 2019-04-05  Jonathan Wakely  <jwakely@redhat.com>
3848
3849         * doc/xml/manual/status_cxx2020.xml: Update status.
3850         * include/std/variant (visit<R>): Define for C++2a (P0655R1).
3851         * testsuite/20_util/variant/visit_r.cc: New test.
3852
3853         * include/bits/fs_dir.h (directory_iterator::operator*)
3854         (directory_iterator::operator->): Add noexcept.
3855         (operator==, operator!=): Replace namespace-scope equality operators
3856         for directory iterators with hidden friends.
3857
3858         PR libstdc++/89986
3859         * config/abi/pre/gnu.ver: Add missing exports.
3860         * testsuite/27_io/filesystem/iterators/directory_iterator.cc: Test
3861         increment member.
3862
3863         * config/abi/pre/gnu.ver: Export new symbols.
3864         * include/bits/fs_dir.h (recursive_directory_iterator::options())
3865         (recursive_directory_iterator::recursion_pending())
3866         (recursive_directory_iterator::disable_recursion_pending()): Remove
3867         inline definitions. Make noexcept.
3868         (recursive_directory_iterator::depth())
3869         (recursive_directory_iterator::operator*())
3870         (recursive_directory_iterator::operator->()): Make noexcept.
3871         (recursive_directory_iterator::_M_options)
3872         (recursive_directory_iterator::_M_pending): Remove data members.
3873         * src/c++17/fs_path.cc (_Dir_stack): Add constructor and data members.
3874         (recursive_directory_iterator::recursive_directory_iterator): Remove
3875         ctor-initializer. Use new constructor for _Dir_stack.
3876         (recursive_directory_iterator::options())
3877         (recursive_directory_iterator::recursion_pending())
3878         (recursive_directory_iterator::disable_recursion_pending()): Add
3879         non-inline definitions.
3880         (recursive_directory_iterator::depth()): Make noexcept.
3881         (recursive_directory_iterator::increment(error_code&))
3882         (recursive_directory_iterator::pop(error_code&)): Adjust to new
3883         location of options and recursion_pending members.
3884         * testsuite/27_io/filesystem/iterators/recursion_pending.cc: New test.
3885         * testsuite/util/testsuite_fs.h (__gnu_test::scoped_file): Add
3886         user-declared move constructor and assignment operator, to make the
3887         type move-only.
3888
3889         * src/c++17/fs_dir.cc (_Dir::advance(bool, error_code&)): Handle
3890         d_type == DT_UNKNOWN immediately.
3891         (_Dir::should_recurse(bool, error_code&)): Remove file_type::unknown
3892         handling here.
3893         * testsuite/27_io/filesystem/iterators/caching.cc: New test.
3894
3895         * include/bits/fs_path.h (path::operator=(path&&)): Check for self
3896         assignment.
3897         * src/c++17/fs_path.cc (path::operator=(const path&)): Likewise.
3898         * testsuite/27_io/filesystem/path/assign/copy.cc: Test self
3899         assignment.
3900
3901         PR libstdc++/87431 (again)
3902         * include/bits/basic_string.h (__variant::_Never_valueless_alt):
3903         Define partial specialization for basic_string.
3904         * include/bits/shared_ptr.h (_Never_valueless_alt): Likewise for
3905         shared_ptr and weak_ptr.
3906         * include/bits/std_function.h (_Never_valueless_alt): Likewise for
3907         function.
3908         * include/bits/stl_vector.h (_Never_valueless_alt): Likewise for
3909         vector.
3910         * include/bits/unique_ptr.h (_Never_valueless_alt): Likewise for
3911         unique_ptr.
3912         * include/debug/vector (_Never_valueless_alt): Likewise for debug
3913         vector.
3914         * include/std/any (_Never_valueless_alt): Define explicit
3915         specialization for any.
3916         * include/std/variant (_Never_valueless_alt): Define primary template.
3917         (__never_valueless): Use _Never_valueless_alt instead of
3918         is_trivially_copyable.
3919         (variant::emplace<N>(Args&&...)): Add special case for non-throwing
3920         initializations to avoid try-catch overhead. Add special case for
3921         scalars produced by potentially-throwing conversions. Use
3922         _Never_valueless_alt instead of is_trivially_copyable for the
3923         remaining strong exception-safety cases.
3924         (variant::emplace<N>(initializer_list<U>, Args&&...)): Likewise.
3925         * testsuite/20_util/variant/87431.cc: Run both test functions.
3926         * testsuite/20_util/variant/exception_safety.cc: New test.
3927         * testsuite/20_util/variant/run.cc: Use pmr::string instead of string,
3928         so the variant becomes valueless.
3929
3930 2019-04-03  Jonathan Wakely  <jwakely@redhat.com>
3931
3932         PR libstdc++/85184
3933         * include/std/variant (_Copy_assign_base, _Move_assign_base, variant):
3934         Remove assertions.
3935         (variant::emplace<_Tp>): Return result of emplace<N> directly.
3936
3937         * include/std/string (__hash_string_base): New class template defining
3938         operator() for hashing strings.
3939         (hash<pmr::string>, hash<pmr::u8string>, hash<pmr::u16string>)
3940         (hash<pmr::u32string>, hash<pmr::wstring>): Define for C++17.
3941         * testsuite/21_strings/basic_string/hash/hash.cc: New test.
3942         * testsuite/21_strings/basic_string/hash/hash_char8_t.cc: New test.
3943
3944 2019-04-01  Ville Voutilainen  <ville.voutilainen@gmail.com>
3945
3946         Use single-visitation in variant assignment and swap and relops.
3947         Also use indices instead of types when checking whether
3948         variants hold the same thing.
3949         * include/std/variant (__do_visit): Add a template parameter
3950         for index visitation, invoke with indices if index visitation
3951         is used.
3952         (__variant_idx_cookie): New.
3953         (__visit_with_index): Likewise.
3954         (_Copy_assign_base::operator=): Do single-visitation with
3955         an index visitor.
3956         (_Move_assign_base::operator=): Likewise.
3957         (_Extra_visit_slot_needed): Adjust.
3958         (__visit_invoke): Call with indices if it's an index visitor.
3959         (relops): Do single-visitation with an index visitor.
3960         (swap): Likewise.
3961         (__visitor_result_type): New.
3962
3963 2019-03-30  Eric Botcazou  <ebotcazou@adacore.com>
3964
3965         * src/c++17/fs_ops.cc (fs::permissions): Use std::errc::not_supported.
3966
3967 2019-03-28  Ville Voutilainen  <ville.voutilainen@gmail.com>
3968
3969         Don't revisit a variant we are already visiting.
3970         * include/std/variant (__variant_construct_single): New.
3971         (__variant_construct): Use it.
3972         (_M_destructive_move): Likewise.
3973         (_M_destructive_copy): Likewise.
3974         (_Copy_assign_base::operator=): Adjust.
3975         (_Move_assign_base::operator=): Likewise.
3976         (swap): Likewise.
3977
3978 2019-03-26  Jonathan Wakely  <jwakely@redhat.com>
3979
3980         PR libstdc++/85965
3981         * include/bits/hashtable.h (_Hashtable): Move static assertions to
3982         destructor so they are not evaluated until the _Key type is complete.
3983         * include/bits/stl_tree.h (_Rb_tree): Likewise.
3984         * testsuite/23_containers/set/85965.cc: New test.
3985         * testsuite/23_containers/unordered_set/85965.cc: New test.
3986         * testsuite/23_containers/map/48101_neg.cc: Replace "here" errors
3987         with regexp matching the corresponding _Rb_tree specialization.
3988         * testsuite/23_containers/multimap/48101_neg.cc: Likewise.
3989         * testsuite/23_containers/multiset/48101_neg.cc: Remove "here" error.
3990         * testsuite/23_containers/set/48101_neg.cc: Likewise.
3991         * testsuite/23_containers/unordered_map/48101_neg.cc: Likewise.
3992         * testsuite/23_containers/unordered_multimap/48101_neg.cc: Likewise.
3993         * testsuite/23_containers/unordered_multiset/48101_neg.cc: Likewise.
3994         * testsuite/23_containers/unordered_set/48101_neg.cc: Likewise.
3995
3996 2019-03-26  Ville Voutilainen  <ville.voutilainen@gmail.com>
3997
3998         PR libstdc++/89825
3999         Fix based on a suggestion by Antony Polukhin.
4000         * include/std/variant (__never_valueless): New.
4001         (_M_valid): Use it.
4002         (_Extra_visit_slot_needed): New.
4003         (_Multi_array): Use it.
4004         (_S_apply_all_alts): Likewise.
4005
4006 2019-03-26  Ville Voutilainen  <ville.voutilainen@gmail.com>
4007
4008         PR libstdc++/89824
4009         Fix based on a suggestion by Antony Polukhin.
4010         * include/std/variant (__gen_vtable): Don't reserve an
4011         additional table slot, _Multi_array already does that.
4012
4013 2019-03-26  Ville Voutilainen  <ville.voutilainen@gmail.com>
4014
4015         PR libstdc++/89816
4016         Fix based on a suggestion by Antony Polukhin.
4017         * include/std/variant (__variant_construct): Capture a pointer
4018         to the storage and visit just one variant.
4019
4020 2019-03-22  Jonathan Wakely  <jwakely@redhat.com>
4021
4022         * doc/xml/manual/backwards_compatibility.xml: Remove link to
4023         Doxygen-generated pages with unstable URL.
4024         * doc/xml/manual/concurrency_extensions.xml: Likewise.
4025         * doc/xml/manual/extensions.xml: Likewise.
4026         * doc/xml/manual/parallel_mode.xml: Likewise.
4027         * doc/xml/manual/support.xml: Likewise.
4028
4029         * include/bits/stl_algobase.h (__lg): Do arithmetic on type int to
4030         avoid -Wconversion warnings.
4031
4032 2019-03-21  Thomas Rodgers  <trodgers@redhat.com>
4033
4034         * include/Makefile.am (std_header): Add ${std_srcdir}/execution.
4035         (pstl_srcdir, pstl_builddir, pstl_headers): New variables.
4036         (allstamped): Add stamp-pstl.
4037         (install-headers): Add ptsl_builddir.
4038         * include/Makefile.in: Regenerate.
4039         * include/bits/c++config: Add pstl configuration.
4040         * include/pstl/LICENSE.txt: New file.
4041         * include/pstl/algorithm_fwd.h: New file.
4042         * include/pstl/algorithm_impl.h: New file.
4043         * include/pstl/execution_defs.h: New file.
4044         * include/pstl/execution_impl.h: New file.
4045         * include/pstl/glue_algorithm_defs.h: New file.
4046         * include/pstl/glue_algorithm_impl.h: New file.
4047         * include/pstl/glue_execution_defs.h: New file.
4048         * include/pstl/glue_memory_defs.h: New file.
4049         * include/pstl/glue_memory_impl.h: New file.
4050         * include/pstl/glue_numeric_defs.h: New file.
4051         * include/pstl/glue_numeric_impl.h: New file.
4052         * include/pstl/memory_impl.h: New file.
4053         * include/pstl/numeric_fwd.h: New file.
4054         * include/pstl/numeric_impl.h: New file.
4055         * include/pstl/parallel_backend.h: New file.
4056         * include/pstl/parallel_backend_tbb.h: New file.
4057         * include/pstl/parallel_backend_utils.h: New file.
4058         * include/pstl/parallel_impl.h: New file.
4059         * include/pstl/pstl_config.h: New file.
4060         * include/pstl/unseq_backend_simd.h: New file.
4061         * include/pstl/utils.h: New file.
4062         * include/std/algorithm: Include parallel algorithm implementations.
4063         * include/std/execution: New file.
4064         * include/std/memory: Include parallel algorithm implementations.
4065         * include/std/numeric: Include parallel algorithm implementations.
4066         * include/std/version: Add parallel algorithms feature test macro.
4067         * testsuite/util/pstl/pstl_test_config.h: New file.
4068         * testsuite/util/pstl/test_utils.h: New file.
4069         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc: New file.
4070         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc: New file.
4071         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_fill_destroy.cc: New file.
4072         * testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: New file.
4073         * testsuite/25_algorithms/pstl/alg_merge/merge.cc: New file.
4074         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc: New file.
4075         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc: New file.
4076         * testsuite/25_algorithms/pstl/alg_modifying_operations/fill.cc: New file.
4077         * testsuite/25_algorithms/pstl/alg_modifying_operations/generate.cc: New file.
4078         * testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc: New file.
4079         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc: New file.
4080         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc: New file.
4081         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc: New file.
4082         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove_copy.cc: New file.
4083         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace.cc: New file.
4084         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc: New file.
4085         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc: New file.
4086         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc: New file.
4087         * testsuite/25_algorithms/pstl/alg_modifying_operations/swap_ranges.cc: New file.
4088         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_binary.cc: New file.
4089         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_unary.cc: New file.
4090         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc: New file.
4091         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc: New file.
4092         * testsuite/25_algorithms/pstl/alg_nonmodifying/adjacent_find.cc: New file.
4093         * testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc: New file.
4094         * testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc: New file.
4095         * testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc: New file.
4096         * testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc: New file.
4097         * testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc: New file.
4098         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc: New file.
4099         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc: New file.
4100         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc: New file.
4101         * testsuite/25_algorithms/pstl/alg_nonmodifying/for_each.cc: New file.
4102         * testsuite/25_algorithms/pstl/alg_nonmodifying/mismatch.cc: New file.
4103         * testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc: New file.
4104         * testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc: New file.
4105         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc: New file.
4106         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc: New file.
4107         * testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc: New file.
4108         * testsuite/25_algorithms/pstl/alg_sorting/includes.cc: New file.
4109         * testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: New file.
4110         * testsuite/25_algorithms/pstl/alg_sorting/is_sorted.cc: New file.
4111         * testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc: New file.
4112         * testsuite/25_algorithms/pstl/alg_sorting/minmax_element.cc: New file.
4113         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc: New file.
4114         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc: New file.
4115         * testsuite/25_algorithms/pstl/alg_sorting/set.cc: New file.
4116         * testsuite/25_algorithms/pstl/alg_sorting/sort.cc: New file.
4117         * testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc: New file.
4118         * testsuite/26_numerics/pstl/numeric_ops/reduce.cc: New file.
4119         * testsuite/26_numerics/pstl/numeric_ops/scan.cc: New file.
4120         * testsuite/26_numerics/pstl/numeric_ops/transform_reduce.cc: New file.
4121         * testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc: New file.
4122         * testsuite/testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc: New file.
4123         * testsuite/testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc: New file.
4124         * testsuite/testsuite/20_util/specialized_algorithms/pstl/uninitialized_fill_destroy.cc: New file.
4125         * testsuite/testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: New file.
4126         * testsuite/testsuite/25_algorithms/pstl/alg_merge/merge.cc: New file.
4127         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc: New file.
4128         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc: New file.
4129         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/fill.cc: New file.
4130         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/generate.cc: New file.
4131         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc: New file.
4132         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc: New file.
4133         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc: New file.
4134         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc: New file.
4135         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/remove_copy.cc: New file.
4136         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/replace.cc: New file.
4137         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc: New file.
4138         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc: New file.
4139         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc: New file.
4140         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/swap_ranges.cc: New file.
4141         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/transform_binary.cc: New file.
4142         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/transform_unary.cc: New file.
4143         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc: New file.
4144         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc: New file.
4145         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/adjacent_find.cc: New file.
4146         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc: New file.
4147         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc: New file.
4148         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc: New file.
4149         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc: New file.
4150         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc: New file.
4151         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc: New file.
4152         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc: New file.
4153         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc: New file.
4154         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/for_each.cc: New file.
4155         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/mismatch.cc: New file.
4156         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc: New file.
4157         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc: New file.
4158         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc: New file.
4159         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc: New file.
4160         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc: New file.
4161         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/includes.cc: New file.
4162         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: New file.
4163         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/is_sorted.cc: New file.
4164         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc: New file.
4165         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/minmax_element.cc: New file.
4166         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc: New file.
4167         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc: New file.
4168         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/set.cc: New file.
4169         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/sort.cc: New file.
4170         * testsuite/testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc: New file.
4171         * testsuite/testsuite/26_numerics/pstl/numeric_ops/reduce.cc: New file.
4172         * testsuite/testsuite/26_numerics/pstl/numeric_ops/scan.cc: New file.
4173         * testsuite/testsuite/26_numerics/pstl/numeric_ops/transform_reduce.cc: New file.
4174         * testsuite/testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc: New file.
4175
4176 2019-03-21  Jonathan Wakely  <jwakely@redhat.com>
4177
4178         * include/c_compatibility/math.h [!__STDCPP_WANT_MATH_SPEC_FUNCS__]
4179         (assoc_laguerre, assoc_laguerref, assoc_laguerrel, assoc_legendre)
4180         (assoc_legendref, assoc_legendrel, beta, betaf, betal, comp_ellint_1)
4181         (comp_ellint_1f, comp_ellint_1l, comp_ellint_2, comp_ellint_2f)
4182         (comp_ellint_2l, comp_ellint_3, comp_ellint_3f, comp_ellint_3l)
4183         (cyl_bessel_i, cyl_bessel_if, cyl_bessel_il, cyl_bessel_j)
4184         (cyl_bessel_jf, cyl_bessel_jl, cyl_bessel_k, cyl_bessel_kf)
4185         (cyl_bessel_kl, cyl_neumann, cyl_neumannf, cyl_neumannl, ellint_1)
4186         (ellint_1f, ellint_1l, ellint_2, ellint_2f, ellint_2l, ellint_3)
4187         (ellint_3f, ellint_3l, expint, expintf, expintl, hermite, hermitef)
4188         (hermitel, laguerre, laguerref, laguerrel, legendre, legendref)
4189         (legendrel, riemann_zeta, riemann_zetaf, riemann_zetal, sph_bessel)
4190         (sph_besself, sph_bessell, sph_legendre, sph_legendref, sph_legendrel)
4191         (sph_neumann, sph_neumannf, sph_neumannl): Only add using-declarations
4192         when the special functions IS is enabled, not for C++17.
4193         * testsuite/26_numerics/headers/cmath/functions_global_c++17.cc:
4194         Replace with ...
4195         * testsuite/26_numerics/headers/cmath/functions_global.cc: New test,
4196         without checks for special functions in C++17.
4197         * testsuite/26_numerics/headers/cmath/special_functions_global.cc:
4198         New test.
4199
4200         PR libstdc++/88066
4201         * include/backward/hash_map: Use <> for includes not "".
4202         * include/backward/hash_set: Likewise.
4203         * include/backward/strstream: Likewise.
4204         * include/tr1/bessel_function.tcc: Likewise.
4205         * include/tr1/exp_integral.tcc: Likewise.
4206         * include/tr1/legendre_function.tcc: Likewise.
4207         * include/tr1/modified_bessel_func.tcc: Likewise.
4208         * include/tr1/riemann_zeta.tcc: Likewise.
4209
4210 2019-03-19  Jonathan Wakely  <jwakely@redhat.com>
4211
4212         * doc/xml/manual/allocator.xml: Link to table documenting evolution
4213         of extension allocators.
4214         * doc/xml/manual/evolution.xml: Use angle brackets for header names.
4215         Document new headers in 7.2, 8.1 and 9.1 releases.
4216         * doc/xml/manual/using.xml: Adjust link target for new_allocator.
4217         * doc/html/*: Regenerate.
4218
4219 2019-03-12  John David Anglin  <dave.anglin@bell.net>
4220
4221         PR libstdc++/89461
4222         * testsuite/lib/libstdc++.exp: Locate libatomic.
4223         * testsuite/lib/dg-options.exp (add_options_for_libatomic): New.
4224         * testsuite/20_util/shared_ptr/thread/default_weaktoshared.cc: Add
4225         libatomic options.
4226         * testsuite/20_util/shared_ptr/thread/mutex_weaktoshared.cc: Likewise.
4227         * testsuite/experimental/net/timer/waitable/cons.cc: Likewise.
4228         * testsuite/experimental/net/timer/waitable/dest.cc: Likewise.
4229         * testsuite/experimental/net/timer/waitable/ops.cc: Likewise.
4230
4231 2019-03-11  Jonathan Wakely  <jwakely@redhat.com>
4232
4233         PR libstdc++/89460
4234         * configure.ac: Check for sockatmark.
4235         * crossconfig.m4: Check for sockatmark.
4236         * config.h.in: Regenerate.
4237         * configure: Regenerate.
4238         * include/experimental/internet (address_v4::_S_hton): Rename
4239         overloaded functions to _S_hton_16 and _S_ntoh_16.
4240         (address_v4::_S_ntoh): Rename to _S_ntoh_16 and _S_ntoh_32.
4241         (basic_endpoint): Adjust calls to _S_hton and _S_ntoh.
4242         * include/experimental/socket (basic_socket::at_mark): Check
4243         _GLIBCXX_HAVE_SOCKATMARK.
4244
4245         * testsuite/29_atomics/atomic_flag/test_and_set/explicit-hle.cc: Use
4246         const variables instead of macros.
4247
4248         PR libstdc++/89629
4249         * libsupc++/hash_bytes.cc [__SIZEOF_SIZE_T__ == 8] (_Hash_bytes):
4250         Use correct type for len_aligned.
4251         * testsuite/20_util/hash/89629.cc: New test.
4252
4253 2019-03-11  Jakub Jelinek  <jakub@redhat.com>
4254
4255         PR libstdc++/89641
4256         * include/std/atomic (atomic<T>::store, atomic<T>::load,
4257         atomic<T>::exchange, atomic<T>::compare_exchange_weak,
4258         atomic<T>::compare_exchange_strong): Cast __m or __s and __f to int.
4259         * include/bits/atomic_base.h (__atomic_base<T>::operator++,
4260         __atomic_base<T>::operator--, __atomic_base<T>::operator+=,
4261         __atomic_base<T>::operator-=, __atomic_base<T>::operator&=,
4262         __atomic_base<T>::operator|=, __atomic_base<T>::operator^=,
4263         __atomic_base<T*>::operator++, __atomic_base<T*>::operator--,
4264         __atomic_base<T*>::operator+=, __atomic_base<T*>::operator-=): Cast
4265         memory_order_seq_cst to int.
4266
4267 2019-03-08  Jonathan Wakely  <jwakely@redhat.com>
4268
4269         * doc/xml/manual/using.xml: Use link element instead of xref.
4270         * doc/html/*: Regenerate.
4271
4272         * include/bits/fs_path.h (path::format): Add fixed underlying type.
4273
4274 2019-03-08  François Dumont  <fdumont@gcc.gnu.org>
4275
4276         PR libstdc++/89477
4277         * include/debug/map.h (map): Use _RequireNotAllocator to constrain
4278         parameters in deduction guides.
4279         * include/debug/multimap.h (multimap): Likewise.
4280         * include/debug/set.h (multimap): Likewise.
4281         * include/debug/multiset.h (multimap): Likewise.
4282         * include/debug/unordered_map (unordered_map): Likewise.
4283         (unordered_multimap): Likewise.
4284         * include/debug/unordered_set (unordered_set): Likewise.
4285         (unordered_multiset): Likewise.
4286
4287         PR libstdc++/89608
4288         * include/debug/unordered_map (unordered_map<>::_M_check_rehashed):
4289         Invalidate all iterators in case of rehash.
4290         (unordered_multimap<>::_M_check_rehashed): Likewise.
4291         * include/debug/unordered_set
4292         (unordered_set<>::_M_check_rehashed): Likewise.
4293         (unordered_multiset<>::_M_check_rehashed): Likewise.
4294         * testsuite/23_containers/unordered_set/debug/89608_neg.cc: New.
4295
4296 2019-03-07  Andreas Schwab  <schwab@suse.de>
4297
4298         * config/abi/post/riscv64-linux-gnu: New directory.
4299         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: New file.
4300
4301 2019-03-07  Jonathan Wakely  <jwakely@redhat.com>
4302
4303         * testsuite/20_util/function_objects/bind_front/1.cc: Change from
4304         compile test to run. Fix typo.
4305
4306         * doc/xml/manual/status_cxx2020.xml: Update C++20 status.
4307         * doc/html/*: Regenerate.
4308
4309         P0356R5 Simplified partial function application
4310         * include/std/functional [C++20] (_Bind_front, _Bind_front_t): Define
4311         helpers for bind_front.
4312         (bind_front, __cpp_lib_bind_front): Define.
4313         * testsuite/20_util/function_objects/bind_front/1.cc: New test.
4314
4315 2019-03-06  Jonathan Wakely  <jwakely@redhat.com>
4316
4317         * include/std/type_traits (__cpp_lib_bounded_array_traits): Define.
4318         * include/std/version (__cpp_lib_bounded_array_traits): Likewise.
4319         * testsuite/20_util/is_bounded_array/value.cc: Check for macro.
4320         * testsuite/20_util/is_unbounded_array/value.cc: Likewise.
4321
4322 2019-03-06  Edward Smith-Rowland  <3dw4rd@verizon.net>
4323
4324         PR libstdc++/86655 - std::assoc_legendre should not constrain
4325         the value of m (or x).
4326         * include/tr1/legendre_function.tcc (__assoc_legendre_p,
4327         __sph_legendre): If degree > order Don't throw, return 0.
4328         (__legendre_p, __assoc_legendre_p): Don't constrain x either.
4329         * testsuite/special_functions/02_assoc_legendre/pr86655.cc: New test.
4330         * testsuite/special_functions/20_sph_legendre/pr86655.cc: New test.
4331         * testsuite/tr1/5_numerical_facilities/special_functions/
4332         02_assoc_legendre/pr86655.cc: New test.
4333         * testsuite/tr1/5_numerical_facilities/special_functions/
4334         22_sph_legendre/pr86655.cc: New test.
4335
4336 2019-03-06  Ville Voutilainen  <ville.voutilainen@gmail.com>
4337
4338         Rewrite variant.
4339         Also PR libstdc++/85517
4340         * include/std/variant (__do_visit): New.
4341         (__variant_cast): Likewise.
4342         (__variant_cookie): Likewise.
4343         (__erased_*): Remove.
4344         (_Variant_storage::_S_vtable): Likewise.
4345         (_Variant_storage::__M_reset_impl): Adjust to use __do_visit.
4346         (_Variant_storage::__M_reset): Adjust.
4347         (__variant_construct): New.
4348         (_Copy_ctor_base(const _Copy_ctor_base&)): Adjust to use
4349         __variant_construct.
4350         (_Move_ctor_base(_Move_ctor_base&&)): Likewise.
4351         (_Move_ctor_base::__M_destructive_copy): New.
4352         (_Move_ctor_base::__M_destructive_move): Adjust to use
4353         __variant_construct.
4354         (_Copy_assign_base::operator=): Adjust to use __do_visit.
4355         (_Copy_assign_alias): Adjust to check both copy assignment
4356         and copy construction for triviality.
4357         (_Move_assign_base::operator=): Adjust to use __do_visit.
4358         (_Multi_array): Add support for visitors that accept and return
4359         a __variant_cookie.
4360         (__gen_vtable_impl::_S_apply_all_alts): Likewise.
4361         (__gen_vtable_impl::_S_apply_single_alt): Likewise.
4362         (__gen_vtable_impl::__element_by_index_or_cookie): New. Generate
4363         a __variant_cookie temporary for a variant that is valueless and..
4364         (__gen_vtable_impl::__visit_invoke): ..adjust here.
4365         (__gen_vtable::_Array_type): Conditionally make space for
4366         the __variant_cookie visitor case.
4367         (__variant_construct_by_index): New.
4368         (get_if): Adjust to use std::addressof.
4369         (relops): Adjust to use __do_visit.
4370         (variant): Add __variant_cast and __variant_construct_by_index
4371         as friends.
4372         (variant::emplace): Use _M_reset() and __variant_construct_by_index
4373         instead of self-destruction.
4374         (variant::swap): Adjust to use __do_visit.
4375         (visit): Reimplement in terms of __do_visit.
4376         (__variant_hash_call_base_impl::operator()): Adjust to use __do_visit.
4377         * testsuite/20_util/variant/compile.cc: Adjust.
4378         * testsuite/20_util/variant/run.cc: Likewise.
4379
4380 2019-03-06  Jonathan Wakely  <jwakely@redhat.com>
4381
4382         * include/bits/c++config.h (_cpp_lib_char8_t): Add L suffix to
4383         constant.
4384         * testsuite/experimental/feat-char8_t.cc: Likewise.
4385
4386          * include/std/type_traits [C++20] (is_bounded_array)
4387          (is_unbounded_array, is_bounded_array_v, is_unbounded_array_v):
4388          Define.
4389          * testsuite/20_util/is_bounded_array/requirements/
4390          explicit_instantiation.cc: New test.
4391          * testsuite/20_util/is_bounded_array/requirements/typedefs.cc: New
4392          test.
4393          * testsuite/20_util/is_bounded_array/value.cc: New test.
4394          * testsuite/20_util/is_unbounded_array/requirements/
4395          explicit_instantiation.cc: New test.
4396          * testsuite/20_util/is_unbounded_array/requirements/typedefs.cc: New
4397          * test.
4398          * testsuite/20_util/is_unbounded_array/value.cc: New test.
4399
4400         * include/bits/ptr_traits.h [C++20] (pointer_traits<T*>::pointer_to):
4401         Add constexpr.
4402         * testsuite/20_util/pointer_traits/pointer_to_constexpr.cc: New test.
4403
4404 2019-03-05  Jonathan Wakely  <jwakely@redhat.com>
4405
4406         * include/c_compatibility/math.h [C++20] (lerp): Add using
4407         declaration.
4408         * include/c_global/cmath [C++20] (__cpp_lib_interpolate): Define.
4409         (__lerp): Define function template to implement lerp.
4410         (lerp(float, float, float), lerp(double, double, double))
4411         (lerp(long double, long double, long double)): Define for C++20.
4412         * include/std/numeric [C++20] (__cpp_lib_interpolate): Define.
4413         (midpoint(T, T), midpoint(T*, T*)): Define.
4414         * include/std::version [C++20] (__cpp_lib_interpolate): Define.
4415         * testsuite/26_numerics/lerp.cc: New test.
4416         * testsuite/26_numerics/midpoint/floating.cc: New test.
4417         * testsuite/26_numerics/midpoint/integral.cc: New test.
4418         * testsuite/26_numerics/midpoint/pointer.cc: New test.
4419
4420 2019-03-04  Edward Smith-Rowland  <3dw4rd@verizon.net>
4421
4422         PR libstdc++/88996 Implement P0439R0
4423         Make std::memory_order a scoped enumeration.
4424         * include/bits/atomic_base.h: For C++20 make memory_order a scoped enum,
4425         add variables for the old enumerators.  Adjust calls.
4426         * testsuite/29_atomics/headers/atomic/types_std_c++2a.cc: New test.
4427         * testsuite/29_atomics/headers/atomic/types_std_c++2a_neg.cc: New test.
4428
4429 2019-03-04  Jonathan Wakely  <jwakely@redhat.com>
4430
4431         * testsuite/26_numerics/bit/bitops.rot/rotl.cc: Remove bogus dg-do
4432         directive.
4433
4434         * include/std/memory_resource (polymorphic_allocator): Add default
4435         template argument for C++20.
4436         (polymorphic_allocator::allocate_bytes)
4437         (polymorphic_allocator::deallocate_bytes)
4438         (polymorphic_allocator::allocate_object)
4439         (polymorphic_allocator::deallocate_object)
4440         (polymorphic_allocator::new_object)
4441         (polymorphic_allocator::delete_object): New member functions for
4442         C++20.
4443         * testsuite/20_util/polymorphic_allocator/allocate_object.cc: New
4444         test.
4445
4446 2019-03-03  Jonathan Wakely  <jwakely@redhat.com>
4447
4448         PR libstdc++/89562
4449         * src/filesystem/ops-common.h (do_copy_file): Open files in binary
4450         mode for mingw.
4451
4452 2019-03-01  Jonathan Wakely  <jwakely@redhat.com>
4453
4454         * testsuite/util/testsuite_allocator.h (__gnu_test::memory_resource)
4455         [!__cpp_sized_deallocation]: Do not pass size to operator delete.
4456
4457         * include/std/memory (uses_allocator_construction_args): New set of
4458         overloaded functions.
4459         (make_obj_using_allocator, uninitialized_construct_using_allocator):
4460         New functions.
4461         * include/std/memory_resource (polymorphic_allocator::construct)
4462         [__cplusplus > 201703l]: Replace all overloads with a single function
4463         using uses_allocator_construction_args.
4464         * testsuite/20_util/polymorphic_allocator/construct_c++2a.cc: New
4465         test.
4466         * testsuite/20_util/uses_allocator/make_obj.cc: New test.
4467
4468 2019-02-27  Jonathan Wakely  <jwakely@redhat.com>
4469
4470         PR libstdc++/89466
4471         * acinclude.m4 (GLIBCXX_CONFIGURE_DOCBOOK): Reorder check for local
4472         stylesheet directories before check for xsltproc. Try to use
4473         xmlcatalog to find local stylesheet directory before trying hardcoded
4474         paths. Add path used by suse to hardcoded paths. Adjust xsltproc
4475         check to look for the same stylesheet as doc/Makefile.am uses. Don't
4476         use xsltproc if xmlcatalog fails to find a local stylesheet.
4477         * configure.ac: Check for xmlcatalog.
4478         * Makefile.in: Regenerate.
4479         * configure: Likewise.
4480         * doc/Makefile.in: Likewise.
4481         * include/Makefile.in: Likewise.
4482         * libsupc++/Makefile.in: Likewise.
4483         * po/Makefile.in: Likewise.
4484         * python/Makefile.in: Likewise.
4485         * src/Makefile.in: Likewise.
4486         * src/c++11/Makefile.in: Likewise.
4487         * src/c++17/Makefile.in: Likewise.
4488         * src/c++98/Makefile.in: Likewise.
4489         * src/filesystem/Makefile.in: Likewise.
4490         * testsuite/Makefile.in: Likewise.
4491
4492 2019-02-26  Jonathan Wakely  <jwakely@redhat.com>
4493
4494         PR libstdc++/89477
4495         * include/bits/alloc_traits.h (_RequireNotAllocator): New helper for
4496         container deduction guides.
4497         * include/bits/hashtable.h (_RequireNotAllocatorOrIntegral): Likewise.
4498         * include/bits/stl_map.h (map): Use _RequireNotAllocator to constrain
4499         parameters in deduction guides.
4500         * include/bits/stl_multimap.h (multimap): Likewise.
4501         * include/bits/stl_multiset.h (multiset): Likewise.
4502         * include/bits/stl_queue.h (queue, priority_queue): Likewise.
4503         * include/bits/stl_set.h (set): Likewise.
4504         * include/bits/stl_stack.h (stack): Likewise.
4505         * include/bits/unordered_map.h (unordered_map, unordered_multimap):
4506         use _RequireNotAllocator and _RequireNotAllocatorOrIntegral to
4507         constrain parameters in deduction guides.
4508         * include/bits/unordered_set.h (unordered_set, unordered_multiset):
4509         Likewise.
4510         * testsuite/23_containers/map/cons/deduction.cc: Test additional
4511         deduction cases.
4512         * testsuite/23_containers/multiset/cons/deduction.cc: Likewise.
4513         * testsuite/23_containers/set/cons/deduction.cc: Likewise.
4514         * testsuite/23_containers/unordered_map/cons/deduction.cc: Likewise.
4515         * testsuite/23_containers/unordered_multimap/cons/deduction.cc:
4516         Likewise.
4517         * testsuite/23_containers/unordered_multiset/cons/deduction.cc:
4518         Likewise.
4519         * testsuite/23_containers/unordered_set/cons/deduction.cc: Likewise.
4520
4521         PR libstdc++/89416
4522         * include/bits/alloc_traits.h (__is_alloc_insertable_impl): Change
4523         to class template and partial specialization using void_t.
4524         (__is_copy_insertable, __is_move_insertable): Adjust base class.
4525
4526 2019-02-24  Jonathan Wakely  <jwakely@redhat.com>
4527
4528         PR libstdc++/89416
4529         * include/bits/alloc_traits.h (__is_alloc_insertable_impl): Make
4530         copy and move members public.
4531
4532 2019-02-23  Jonathan Wakely  <jwakely@redhat.com>
4533
4534         * include/std/type_traits (__underlying_type_impl): New helper to
4535         make underlying_type SFINAE-friendly.
4536         (underlying_type): Derive from __underlying_type_impl.
4537         * testsuite/20_util/underlying_type/requirements/typedefs-3.cc: New
4538         test.
4539
4540         PR libstdc++/89446
4541         * include/bits/char_traits.h (__constant_char_array): Check index is
4542         in range before dereferencing.
4543         (char_traits<char>::compare, char_traits<char>::find)
4544         (char_traits<char8_t>::compare, char_traits<char8_t>::find): Return
4545         immediately if n is zero.
4546         (char_traits<wchar_t>::compare, char_traits<wchar_t>::find): Likewise.
4547         Remove workarounds for PR 67026.
4548         * testsuite/21_strings/basic_string_view/operators/char/89446.cc:
4549         New test.
4550         * testsuite/21_strings/basic_string_view/operators/wchar_t/89446.cc:
4551         New test.
4552
4553 2019-02-22  Eric Botcazou  <ebotcazou@adacore.com>
4554
4555         * config/abi/post/sparc64-linux-gnu/baseline_symbols.txt: Adjust.
4556         * config/abi/post/sparc64-linux-gnu/32/baseline_symbols.txt: Likewise.
4557
4558 2019-02-22  Jakub Jelinek  <jakub@redhat.com>
4559
4560         PR libstdc++/89402
4561         * src/c++98/compatibility-ldbl.cc (_ZNKSt4hashIeEclEe): Change return
4562         type to std::size_t and argument to type to long double.
4563
4564 2019-02-22  Eric Botcazou  <ebotcazou@adacore.com>
4565
4566         * configure.host (abi_baseline_pair): Adjust for SPARC64/Linux.
4567         * config/abi/post/sparc64-linux-gnu: New directory.
4568         * config/abi/post/sparc64-linux-gnu/baseline_symbols.txt: New file.
4569         * config/abi/post/sparc64-linux-gnu/32: New directory.
4570         * config/abi/post/sparc64-linux-gnu/32/baseline_symbols.txt: New file.
4571
4572 2019-02-21  Jonathan Wakely  <jwakely@redhat.com>
4573
4574         * testsuite/29_atomics/headers/atomic/types_std_c++20.cc: New test.
4575         * testsuite/29_atomics/headers/atomic/types_std_c++20_neg.cc: New
4576         test.
4577
4578 2019-02-22  Tom Honermann  <tom@honermann.net>
4579
4580         * python/libstdcxx/v6/printers.py (register_type_printers): Add type
4581         printers for u8string and u8string_view.
4582
4583 2019-02-22  Tom Honermann  <tom@honermann.net>
4584
4585         * testsuite/18_support/byte/ops.cc: Validate
4586         std::to_integer<char8_t>, std::to_integer<char16_t>, and
4587         std::to_integer<char32_t>.
4588         * testsuite/18_support/numeric_limits/dr559.cc: Validate
4589         std::numeric_limits<char8_t>.
4590         * testsuite/18_support/numeric_limits/lowest.cc: Validate
4591         std::numeric_limits<char8_t>::lowest().
4592         * testsuite/18_support/numeric_limits/max_digits10.cc: Validate
4593         std::numeric_limits<char8_t>::max_digits10.
4594         * testsuite/18_support/type_info/fundamental.cc: Validate
4595         typeinfo for char8_t.
4596         * testsuite/20_util/from_chars/1_c++20_neg.cc: New test, validating
4597         std::from_chars with char8_t.
4598         * testsuite/20_util/hash/requirements/explicit_instantiation.cc:
4599         Validate explicit instantiation of std::hash<char8_t>.
4600         * testsuite/20_util/is_integral/value.cc: Validate
4601         std::is_integral<char8_t>.
4602         * testsuite/20_util/make_signed/requirements/typedefs-4.cc:
4603         Validate std::make_signed<char8_t>.
4604         * testsuite/21_strings/basic_string/cons/char/deduction.cc:
4605         Validate u8string construction from char8_t sources.
4606         * testsuite/21_strings/basic_string/types/pmr_typedefs.cc: Validate
4607         std::pmr::u8string.
4608         * testsuite/21_strings/basic_string_view/operations/compare/
4609         char/70483.cc: Validate substr operations on u8string_view.
4610         * testsuite/21_strings/basic_string_view/typedefs.cc: Validate that
4611         the u8string_view typedef is defined.
4612         * testsuite/21_strings/char_traits/requirements/
4613         constexpr_functions.cc: Validate char_traits<char8_t> constexpr
4614         member functions.
4615         * testsuite/21_strings/char_traits/requirements/
4616         constexpr_functions_c++17.cc: Validate char_traits<char8_t> C++17
4617         constexpr member functions.
4618         * testsuite/21_strings/headers/string/types_std_c++0x.cc: Validate
4619         that the u8string typedef is defined.
4620         * testsuite/22_locale/locale/cons/unicode.cc: Validate the presence
4621         of the std::codecvt<char16_t, char8_t, std::mbstate_t> and
4622         std::codecvt<char32_t, char8_t, std::mbstate_t> facets.
4623         * testsuite/29_atomics/atomic/cons/assign_neg.cc: Update line
4624         numbers.
4625         * testsuite/29_atomics/atomic/cons/copy_neg.cc: Likewise.
4626         * testsuite/29_atomics/atomic_integral/cons/assign_neg.cc:
4627         Likewise.
4628         * testsuite/29_atomics/atomic_integral/cons/copy_neg.cc: Likewise.
4629         * testsuite/29_atomics/atomic_integral/is_always_lock_free.cc:
4630         Validate std::atomic<char8_t>::is_always_lock_free
4631         * testsuite/29_atomics/atomic_integral/operators/bitwise_neg.cc:
4632         Update line numbers.
4633         * testsuite/29_atomics/atomic_integral/operators/decrement_neg.cc:
4634         Likewise.
4635         * testsuite/29_atomics/atomic_integral/operators/increment_neg.cc:
4636         Likewise.
4637         * testsuite/experimental/polymorphic_allocator/pmr_typedefs_string.cc:
4638         Validate std::experimental::pmr::u8string.
4639         * testsuite/experimental/string_view/typedefs.cc: Validate that the
4640         u8string_view typedef is defined.
4641         * testsuite/util/testsuite_common_types.h: Add char8_t, char16_t and
4642         char32_t to the typelists.
4643
4644 2019-02-22  Tom Honermann  <tom@honermann.net>
4645
4646         * include/ext/typelist.h: Constrain a partial specialization of
4647         typelist::detail::append_ to only match chain<T1,T2>.
4648
4649 2019-02-21  Jonathan Wakely  <jwakely@redhat.com>
4650
4651         PR libstdc++/89416
4652         * include/bits/alloc_traits.h (__is_alloc_insertable_impl): Replace
4653         class template with class. Replace move and copy member types with
4654         member alias templates, so they are only instantiated when needed.
4655         (__is_copy_insertable, __is_move_insertable): Adjust base class.
4656         * testsuite/23_containers/vector/modifiers/push_back/89130.cc: Enable
4657         test for C++11/14/17 as well.
4658         * testsuite/23_containers/vector/modifiers/push_back/89416.cc: New
4659         test.
4660
4661 2019-02-20  Jakub Jelinek  <jakub@redhat.com>
4662
4663         PR libstdc++/89402
4664         * src/c++98/compatibility-ldbl.cc (_ZNKSt4hashIeEclEe): Add
4665         _GLIBCXX_PURE to the alias declaration.
4666
4667 2019-02-19  Jonathan Wakely  <jwakely@redhat.com>
4668
4669         * testsuite/21_strings/basic_string/literals/types.cc
4670         [_GLIBCXX_USE_CHAR8_T]: Adjust expected string type for u8 literal.
4671         * testsuite/21_strings/basic_string/literals/values.cc
4672         [_GLIBCXX_USE_CHAR8_T]: Likewise.
4673         * testsuite/22_locale/codecvt/char16_t.cc: Adjust for u8 literals
4674         potentially having different type.
4675         * testsuite/22_locale/codecvt/char32_t.cc: Likewise.
4676         * testsuite/22_locale/codecvt/codecvt_utf8/79980.cc: Cast u8 literal
4677         to char.
4678         * testsuite/22_locale/codecvt/codecvt_utf8/wchar_t/1.cc: Likewise.
4679         * testsuite/22_locale/codecvt/utf8.cc: Likewise.
4680         * testsuite/22_locale/conversions/string/2.cc: Remove u8 prefix from
4681         string literals only using basic character set.
4682         * testsuite/22_locale/conversions/string/3.cc: Likewise. Cast other
4683         u8 literals to char.
4684         * testsuite/29_atomics/headers/atomic/macros.cc [_GLIBCXX_USE_CHAR8_T]:
4685         Test ATOMIC_CHAR8_T_LOCK_FREE.
4686         Add missing #error to ATOMIC_CHAR16_T_LOCK_FREE test.
4687         * testsuite/29_atomics/headers/atomic/types_std_c++0x.cc
4688         [_GLIBCXX_USE_CHAR8_T]: Check for std::atomic_char8_t.
4689         * testsuite/experimental/string_view/literals/types.cc
4690         [_GLIBCXX_USE_CHAR8_T]: Adjust expected string_view type for u8
4691         literal.
4692         * testsuite/experimental/string_view/literals/values.cc
4693         [_GLIBCXX_USE_CHAR8_T]: Likewise.
4694
4695 2019-02-19  Tom Honermann  <tom@honermann.net>
4696
4697         * testsuite/18_support/numeric_limits/char8_t.cc: New test cloned
4698         from char16_32_t.cc; validates numeric_limits<char8_t>.
4699         * testsuite/21_strings/basic_string/literals/types-char8_t.cc: New
4700         test cloned from types.cc; validates operator""s for char8_t
4701         returns u8string.
4702         * testsuite/21_strings/basic_string/literals/values-char8_t.cc: New
4703         test cloned from values.cc; validates construction and comparison
4704         of u8string values.
4705         * testsuite/21_strings/basic_string/requirements/
4706         /explicit_instantiation/char8_t/1.cc: New test cloned from
4707         char16_t/1.cc; validates explicit instantiation of
4708         basic_string<char8_t>.
4709         * testsuite/21_strings/basic_string_view/literals/types-char8_t.cc:
4710         New test cloned from types.cc; validates operator""sv for char8_t
4711         returns u8string_view.
4712         * testsuite/21_strings/basic_string_view/literals/
4713         values-char8_t.cc: New test cloned from values.cc; validates
4714         construction and comparison of u8string_view values.
4715         * testsuite/21_strings/basic_string_view/requirements/
4716         explicit_instantiation/char8_t/1.cc: New test cloned from
4717         char16_t/1.cc; validates explicit instantiation of
4718         basic_string_view<char8_t>.
4719         * testsuite/21_strings/char_traits/requirements/char8_t/65049.cc:
4720         New test cloned from char16_t/65049.cc; validates that
4721         char_traits<char8_t> is not vulnerable to the concerns in PR65049.
4722         * testsuite/21_strings/char_traits/requirements/char8_t/
4723         typedefs.cc: New test cloned from char16_t/typedefs.cc; validates
4724         that char_traits<char8_t> member typedefs are present and correct.
4725         * testsuite/21_strings/char_traits/requirements/
4726         explicit_instantiation/char8_t/1.cc: New test cloned from
4727         char16_t/1.cc; validates explicit instantiation of
4728         char_traits<char8_t>.
4729         * testsuite/22_locale/codecvt/char16_t-char8_t.cc: New test cloned
4730         from char16_t.cc: validates
4731         codecvt<char16_t, char8_t, mbstate_t>.
4732         * testsuite/22_locale/codecvt/char32_t-char8_t.cc: New test cloned
4733         from char32_t.cc: validates
4734         codecvt<char32_t, char8_t, mbstate_t>.
4735         * testsuite/22_locale/codecvt/utf8-char8_t.cc: New test cloned from
4736         utf8.cc; validates codecvt<char16_t, char8_t, std::mbstate_t> and
4737         codecvt<char32_t, char8_t, std::mbstate_t>.
4738         * testsuite/27_io/filesystem/path/native/string-char8_t.cc: New
4739         test cloned from string.cc; validates filesystem::path construction
4740         from char8_t input.
4741         * testsuite/experimental/feat-char8_t.cc: New test; validates that
4742         the __cpp_lib_char8_t feature test macro is defined with the
4743         correct value.
4744         * testsuite/experimental/filesystem/path/native/string-char8_t.cc:
4745         New test cloned from string.cc; validates filesystem::path
4746         construction from char8_t input.
4747         * testsuite/experimental/string_view/literals/types-char8_t.cc: New
4748         test cloned from types.cc; validates operator""sv for char8_t
4749         returns u8string_view.
4750         * testsuite/experimental/string_view/literals/values-char8_t.cc:
4751         New test cloned from values.cc; validates construction and
4752         comparison of u8string_view values.
4753         * testsuite/experimental/string_view/requirements/
4754         explicit_instantiation/char8_t/1.cc: New test cloned from
4755         char16_t/1.cc; validates explicit instantiation of
4756         basic_string_view<char8_t>.
4757         * testsuite/ext/char8_t/atomic-1.cc: New test; validates that
4758         ATOMIC_CHAR8_T_LOCK_FREE is not defined if char8_t support is not
4759         enabled.
4760
4761 2019-02-19  Tom Honermann  <tom@honermann.net>
4762
4763         P0482R5 char8_t: Standard library support
4764         * config/abi/pre/gnu-versioned-namespace.ver (CXXABI_2.0): Add
4765         typeinfo symbols for char8_t.
4766         * config/abi/pre/gnu.ver: Add CXXABI_1.3.12.
4767         (GLIBCXX_3.4.26): Add symbols for specializations of
4768         numeric_limits and codecvt that involve char8_t.
4769         (CXXABI_1.3.12): Add typeinfo symbols for char8_t.
4770         * include/bits/atomic_base.h: Add atomic_char8_t.
4771         * include/bits/basic_string.h: Add std::hash<u8string> and
4772         operator""s(const char8_t*, size_t).
4773         * include/bits/c++config: Define _GLIBCXX_USE_CHAR8_T and
4774         __cpp_lib_char8_t.
4775         * include/bits/char_traits.h: Add char_traits<char8_t>.
4776         * include/bits/codecvt.h: Add
4777         codecvt<char16_t, char8_t, mbstate_t>,
4778         codecvt<char32_t, char8_t, mbstate_t>,
4779         codecvt_byname<char16_t, char8_t, mbstate_t>, and
4780         codecvt_byname<char32_t, char8_t, mbstate_t>.
4781         * include/bits/cpp_type_traits.h: Add __is_integer<char8_t> to
4782         recognize char8_t as an integral type.
4783         * include/bits/fs_path.h: (path::__is_encoded_char): Recognize
4784         char8_t.
4785         (path::u8string): Return std::u8string when char8_t support is
4786         enabled.
4787         (path::generic_u8string): Likewise.
4788         (path::_S_convert): Handle conversion from char8_t input.
4789         (path::_S_str_convert): Likewise.
4790         * include/bits/functional_hash.h: Add hash<char8_t>.
4791         * include/bits/locale_conv.h (__str_codecvt_out): Add overloads for
4792         char8_t.
4793         * include/bits/locale_facets.h (_GLIBCXX_NUM_UNICODE_FACETS): Bump
4794         for new char8_t specializations.
4795         * include/bits/localefwd.h: Add missing declarations of
4796         codecvt<char16_t, char, mbstate_t> and
4797         codecvt<char32_t, char, mbstate_t>.  Add char8_t declarations
4798         codecvt<char16_t, char8_t, mbstate_t> and
4799         codecvt<char32_t, char8_t, mbstate_t>.
4800         * include/bits/postypes.h: Add u8streampos
4801         * include/bits/stringfwd.h: Add declarations of
4802         char_traits<char8_t> and u8string.
4803         * include/c_global/cstddef: Add __byte_operand<char8_t>.
4804         * include/experimental/bits/fs_path.h (path::__is_encoded_char):
4805         Recognize char8_t.
4806         (path::u8string): Return std::u8string when char8_t support is
4807         enabled.
4808         (path::generic_u8string): Likewise.
4809         (path::_S_convert): Handle conversion from char8_t input.
4810         (path::_S_str_convert): Likewise.
4811         * include/experimental/string: Add u8string.
4812         * include/experimental/string_view: Add u8string_view,
4813         hash<experimental::u8string_view>, and
4814         operator""sv(const char8_t*, size_t).
4815         * include/std/atomic: Add atomic<char8_t> and atomic_char8_t.
4816         * include/std/charconv (__is_int_to_chars_type): Recognize char8_t
4817         as a character type.
4818         * include/std/limits: Add numeric_limits<char8_t>.
4819         * include/std/string_view: Add u8string_view,
4820         hash<experimental::u8string_view>, and
4821         operator""sv(const char8_t*, size_t).
4822         * include/std/type_traits: Add __is_integral_helper<char8_t>,
4823         __make_unsigned<char8_t>, and __make_signed<char8_t>.
4824         * libsupc++/atomic_lockfree_defines.h: Define
4825         ATOMIC_CHAR8_T_LOCK_FREE.
4826         * src/c++11/Makefile.am: Compile with -fchar8_t when compiling
4827         codecvt.cc and limits.cc so that char8_t specializations of
4828         numeric_limits and codecvt and emitted.
4829         * src/c++11/Makefile.in: Likewise.
4830         * src/c++11/codecvt.cc: Define members of
4831         codecvt<char16_t, char8_t, mbstate_t>,
4832         codecvt<char32_t, char8_t, mbstate_t>,
4833         codecvt_byname<char16_t, char8_t, mbstate_t>, and
4834         codecvt_byname<char32_t, char8_t, mbstate_t>.
4835         * src/c++11/limits.cc: Define members of
4836         numeric_limits<char8_t>.
4837         * src/c++98/Makefile.am: Compile with -fchar8_t when compiling
4838         locale_init.cc and localename.cc.
4839         * src/c++98/Makefile.in: Likewise.
4840         * src/c++98/locale_init.cc: Add initialization for the
4841         codecvt<char16_t, char8_t, mbstate_t> and
4842         codecvt<char32_t, char8_t, mbstate_t> facets.
4843         * src/c++98/localename.cc: Likewise.
4844         * testsuite/util/testsuite_abi.cc: Validate ABI bump.
4845
4846 2019-02-18  Wilco Dijkstra  <wdijkstr@arm.com>
4847
4848         * 27_io/filesystem/operations/all.cc: Add dg-require-filesystem-ts.
4849         * 27_io/filesystem/operations/resize_file.cc: Likewise.
4850         * 27_io/filesystem/path/generation/normal2.cc: Likewise.
4851
4852 2019-02-14  Jonathan Wakely  <jwakely@redhat.com>
4853
4854         * doc/xml/manual/status_cxx2020.xml: Update P0887R1 status.
4855         * doc/html/*: Regenerate.
4856
4857         * doc/xml/manual/status_cxx2017.xml: Add P0063R3 to status table.
4858         * doc/html/*: Regenerate.
4859
4860         * doc/xml/manual/intro.xml: Document LWG 2586 status.
4861         * include/bits/uses_allocator.h (__uses_alloc): Use const lvalue
4862         allocator type in is_constructible checks.
4863         * testsuite/20_util/scoped_allocator/69293_neg.cc: Adjust dg-error.
4864         * testsuite/20_util/scoped_allocator/dr2586.cc: New test.
4865         * testsuite/20_util/tuple/cons/allocators.cc: Add test using
4866         problematic type from LWG 2586 discussion.
4867         * testsuite/20_util/uses_allocator/69293_neg.cc: Adjust dg-error.
4868         * testsuite/20_util/uses_allocator/cons_neg.cc: Likewise.
4869
4870         * configure.ac: Check for C11 timespec_get function.
4871         * crossconfig.m4 (freebsd, linux, gnu, cygwin, solaris, netbsd)
4872         (openbsd): Likewise
4873         * config.h.in: Regenerate.
4874         * configure: Regenerate.
4875         * include/c_global/ctime (timespec, timespec_get): Add to namespace
4876         std for C++17 and up.
4877
4878         * doc/xml/manual/intro.xml: Document LWG 2537 status.
4879         * include/bits/stl_queue.h
4880         (priority_queue(const Compare&, const Container&, const Alloc&))
4881         (priority_queue(const Compare&, Container&&, const Alloc&)): Call
4882         make_heap.
4883         * testsuite/23_containers/priority_queue/dr2537.cc: New test.
4884
4885         * doc/xml/manual/intro.xml: Document LWG 2566 status.
4886         * include/bits/stl_queue.h (queue, priority_queue): Add static
4887         assertions to enforce LWG 2566 requirement on value_type.
4888         * include/bits/stl_stack.h (stack): Likewise.
4889
4890         PR middle-end/89303
4891         * testsuite/20_util/enable_shared_from_this/89303.cc: New test.
4892
4893         * doc/xml/manual/intro.xml: Document LWG 2735 status.
4894         * include/bits/std_abs.h: Add comment about LWG 2735.
4895         * testsuite/26_numerics/headers/cstdlib/dr2735.cc: New test.
4896
4897 2019-02-13  Jonathan Wakely  <jwakely@redhat.com>
4898
4899         PR libstdc++/89345
4900         * include/std/version [__cpp_impl_destroying_delete]
4901         (__cpp_lib_destroying_delete): Only define for C++2a and later.
4902         * libsupc++/new [__cpp_impl_destroying_delete]
4903         (__cpp_lib_destroying_delete): Likewise.
4904         (destroying_delete_t, destroying_delete): Likewise, but define even
4905         when __cpp_impl_destroying_delete is not defined.
4906         * testsuite/18_support/destroying_delete.cc: New test.
4907
4908 2019-02-11  Jonathan Wakely  <jwakely@redhat.com>
4909
4910         PR libstdc++/89023
4911         * testsuite/17_intro/headers/c++2011/parallel_mode.cc: New test.
4912         * testsuite/17_intro/headers/c++2014/parallel_mode.cc: New test.
4913         * testsuite/17_intro/headers/c++2017/parallel_mode.cc: New test.
4914         * testsuite/28_regex/headers/regex/parallel_mode.cc: Remove.
4915
4916 2019-02-09  Jonathan Wakely  <jwakely@redhat.com>
4917
4918         PR libstdc++/71044
4919         * include/bits/fs_path.h (path::has_root_name)
4920         (path::has_root_directory, path::has_root_path)
4921         (path::has_relative_path, path::has_parent_path)
4922         (path::has_filename, path::has_stem, path::has_extension)
4923         (path::is_absolute, path::is_relative, path::_M_find_extension): Add
4924         noexcept.
4925         * src/c++17/fs_path.cc (path::has_root_name)
4926         (path::has_root_directory, path::has_root_path)
4927         (path::has_relative_path, path::has_parent_path)
4928         (path::has_filename, path::_M_find_extension): Add noexcept.
4929
4930 2019-02-06  Jonathan Wakely  <jwakely@redhat.com>
4931
4932         PR libstdc++/89102 (partial)
4933         * include/std/type_traits (common_type<>): Define.
4934         (common_type<T>): Derive from common_type<T, T>.
4935         * testsuite/20_util/common_type/requirements/explicit_instantiation.cc:
4936         Test zero-length template argument list.
4937         * testsuite/20_util/common_type/requirements/sfinae_friendly_1.cc:
4938         Test additional single argument cases.
4939         * testsuite/20_util/common_type/requirements/sfinae_friendly_2.cc:
4940         Adjust expected error.
4941
4942 2019-02-05  Jonathan Wakely  <jwakely@redhat.com>
4943
4944         PR libstdc++/89128
4945         * include/bits/stl_queue.h (queue, priority_queue): Add deduction
4946         guides.
4947         * include/bits/stl_stack.h (stack): Likewise.
4948         * testsuite/23_containers/priority_queue/deduction.cc: New test.
4949         * testsuite/23_containers/queue/deduction.cc: New test.
4950         * testsuite/23_containers/stack/deduction.cc: New test.
4951
4952         PR libstdc++/89194
4953         * include/std/type_traits (__is_convertible_helper)
4954         (__is_convertible_helper<_From, _To, false>): Revert changes to
4955         support is_nothrow_convertible.
4956         (__is_nt_convertible_helper): New helper.
4957         (is_nothrow_convertible): Use __is_nt_convertible_helper.
4958
4959         * testsuite/23_containers/vector/modifiers/push_back/49836.cc: Restore
4960         use of CopyConsOnlyType, but also test DelAnyAssign for completeness.
4961
4962         PR libstdc++/89130
4963         * include/bits/alloc_traits.h (__is_copy_insertable_impl): Rename to
4964         __is_alloc_insertable_impl. Replace single type member with two
4965         members, one for each of copy and move insertable.
4966         (__is_move_insertable): New trait for internal use.
4967         * include/bits/stl_vector.h (vector::_S_nothrow_relocate(true_type))
4968         (vector::_S_nothrow_relocate(true_type)): New functions to
4969         conditionally check if __relocate_a can throw.
4970         (vector::_S_use_relocate()): Dispatch to _S_nothrow_relocate based
4971         on __is_move_insertable.
4972         (vector::_S_do_relocate): New overloaded functions to conditionally
4973         call __relocate_a.
4974         (vector::_S_relocate): New function that dispatches to _S_do_relocate
4975         based on _S_use_relocate.
4976         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
4977         (vector::_M_default_append): Call _S_relocate instead of __relocate_a.
4978         * testsuite/23_containers/vector/modifiers/push_back/89130.cc: New.
4979
4980         PR libstdc++/89090
4981         * include/bits/stl_uninitialized.h (__relocate_a_1): Make unused
4982         parameter unnamed. Add message to static assertion.
4983         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
4984         (vector::_M_default_append): Use _GLIBCXX17_CONSTEXPR for if constexpr
4985         in C++11 code.
4986
4987 2019-02-05  Marc Glisse  <marc.glisse@inria.fr>
4988
4989         PR libstdc++/87106
4990         * include/bits/stl_uninitialized.h (__is_trivially_relocatable):
4991         Rename...
4992         (__is_bitwise_relocatable): ... to this.
4993         (__relocate_a_1): Adapt.
4994         * include/bits/stl_deque.h (__is_trivially_relocatable): Rename...
4995         (__is_bitwise_relocatable): ... to this.
4996
4997 2019-01-30  Jonathan Wakely  <jwakely@redhat.com>
4998
4999         PR libstdc++/89117
5000         * src/c++17/fs_path.cc (path::replace_extension): Erase extension from
5001         final component as well as from _M_pathname. Append the dot using
5002         operator+= instead of only to _M_pathname.
5003         (path::_M_find_extension): Reformat slightly.
5004         * testsuite/27_io/filesystem/path/modifiers/replace_extension.cc:
5005         Add more test cases.
5006
5007 2019-01-30  Ulrich Drepper  <drepper@redhat.com>
5008
5009         * doc/xml/manual/status_cxx2020.xml: Update P0600 entry.
5010
5011 2019-01-29  Jonathan Wakely  <jwakely@redhat.com>
5012
5013         * testsuite/26_numerics/headers/complex/synopsis.cc: Remove incorrect
5014         constexpr specifiers from arg and proj.
5015
5016         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Add missing exports for
5017         __shared_ptr instantiations used by gcc4-compatible ABI.
5018
5019         * include/experimental/forward_list (experimental::erase): Qualify
5020         call to erase_if.
5021         * include/experimental/list (experimental::erase): Likewise.
5022         * include/std/forward_list (std::erase): Likewise.
5023         * include/std/list (std::erase): Likewise.
5024
5025         * testsuite/20_util/reference_wrapper/result_type.cc: Disable for
5026         C++2a.
5027         * testsuite/20_util/reference_wrapper/typedefs-2.cc: Likewise.
5028         * testsuite/20_util/reference_wrapper/typedefs-3.cc: Likewise.
5029         * testsuite/20_util/reference_wrapper/typedefs.cc: Likewise.
5030         * testsuite/30_threads/async/54297.cc: Suppress nodiscard warning.
5031         * testsuite/ext/array_allocator/26875.cc: Likewise.
5032         * testsuite/ext/pool_allocator/allocate_chunk.cc: Likewise.
5033         * testsuite/util/replacement_memory_operators.h: Likewise.
5034         * testsuite/util/testsuite_allocator.h: Likewise.
5035
5036         * include/std/memory_resource (__pool_resource::_M_unpooled): Use
5037         normal mode vector, even for debug mode.
5038         * include/std/vector [_GLIBCXX_DEBUG] (_GLIBCXX_STD_C::pmr::vector):
5039         Define alias template for normal mode vector.
5040
5041 2019-01-28  Jonathan Wakely  <jwakely@redhat.com>
5042
5043         PR libstdc++/68737
5044         * config/locale/generic/c_locale.h (__convert_from_v)
5045         [_GLIBCXX_USE_C99_STDIO]: Also check _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
5046         * config/os/hpux/os_defines.h: Define _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
5047         * include/bits/locale_facets.tcc (num_put::_M_insert_float)
5048         [_GLIBCXX_USE_C99_STDIO]: Also check _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
5049
5050 2019-01-24  Jonathan Wakely  <jwakely@redhat.com>
5051
5052         PR libstdc++/88840
5053         * include/bits/stl_vector.h (vector::__use_relocate): Replace static
5054         data member with static member function _S_use_relocate().
5055         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
5056         (vector::_M_default_append): Use _S_use_relocate() instead of
5057         __use_relocate.
5058
5059         * testsuite/27_io/filesystem/path/compare/strings.cc: Only compare
5060         sign of results.
5061
5062 2019-01-22  Jonathan Wakely  <jwakely@redhat.com>
5063
5064         PR libstdc++/88740
5065         * testsuite/util/testsuite_hooks.h [stderr] (VERIFY): Use fprintf to
5066         write to stderr instead of using printf.
5067
5068 2019-01-21  Jakub Jelinek  <jakub@redhat.com>
5069
5070         PR libstdc++/86590
5071         * include/bits/char_traits.h (__constant_string_p,
5072         __constant_char_array_p): Use __builtin_is_constant_evaluated if
5073         available.
5074
5075 2019-01-20  Ulrich Drepper  <drepper@redhat.com>
5076
5077         Implement C++20 P0600r1.
5078         * include/backward/hash_map: Add nodiscard attribute to empty.
5079         * include/backward/hash_set: Likewise.
5080         * backward/hashtable.h: Likewise.
5081         * include/bits/basic_string.h: Likewise.
5082         * include/bits/forward_list.h: Likewise.
5083         * include/bits/hashtable.h: Likewise.
5084         * include/bits/regex.h: Likewise.
5085         * include/bits/stl_deque.h: Likewise.
5086         * include/bits/stl_list.h: Likewise.
5087         * include/bits/stl_map.h: Likewise.
5088         * include/bits/stl_multimap.h: Likewise.
5089         * include/bits/stl_multiset.h: Likewise.
5090         * include/bits/stl_queue.h: Likewise.
5091         * include/bits/stl_set.h: Likewise.
5092         * include/bits/stl_stack.h: Likewise.
5093         * include/bits/stl_tree.h: Likewise.
5094         * include/bits/stl_vector.h: Likewise.
5095         * include/bits/unordered_map.h: Likewise.
5096         * include/bits/unordered_set.h: Likewise.
5097         * include/debug/array: Likewise.
5098         * include/experimental/any: Likewise.
5099         * include/experimental/bits/fs_path.h: Likewise.
5100         * include/experimental/internet: Likewise.
5101         * include/experimental/string_view: Likewise.
5102         * include/ext/pb_ds/detail/bin_search_tree_/info_fn_imps.hpp:
5103         Likewise.
5104         * include/ext/pb_ds/detail/binary_heap_/binary_heap_.hpp:
5105         Likewise.
5106         * include/ext/pb_ds/detail/binary_heap_/info_fn_imps.hpp:
5107         Likewise.
5108         * include/ext/pb_ds/detail/cc_hash_table_map_/cc_ht_map_.hpp:
5109         Likewise.
5110         * include/ext/pb_ds/detail/cc_hash_table_map_/info_fn_imps.hpp:
5111         Likewise.
5112         * include/ext/pb_ds/detail/cc_hash_table_map_/size_fn_imps.hpp:
5113         Likewise.
5114         * include/ext/pb_ds/detail/gp_hash_table_map_/gp_ht_map_.hpp:
5115         Likewise.
5116         * include/ext/pb_ds/detail/gp_hash_table_map_/info_fn_imps.hpp:
5117         Likewise.
5118         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/
5119         info_fn_imps.hpp: Likewise.
5120         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/
5121         left_child_next_sibling_heap_.hpp: Likewise.
5122         * include/ext/pb_ds/detail/list_update_map_/info_fn_imps.hpp:
5123         Likewise.
5124         * include/ext/pb_ds/detail/list_update_map_/lu_map_.hpp:
5125         Likewise.
5126         * include/ext/pb_ds/detail/ov_tree_map_/info_fn_imps.hpp:
5127         Likewise.
5128         * include/ext/pb_ds/detail/ov_tree_map_/ov_tree_map_.hp:
5129         Likewise.
5130         * include/ext/pb_ds/detail/pat_trie_/info_fn_imps.hpp:
5131         Likewise.
5132         * include/ext/pb_ds/detail/pat_trie_/pat_trie_.hpp:
5133         Likewise.
5134         * include/ext/pb_ds/detail/rc_binomial_heap_/rc.hpp:
5135         Likewise.
5136         * include/ext/pb_ds/detail/tree_trace_base.hpp: Likewise.
5137         * include/ext/pb_ds/trie_policy.hpp: Likewise.
5138         * include/ext/rope: Likewise.
5139         * include/ext/slist: Likewise.
5140         * include/ext/vstring.h: Likewise.
5141         * include/profile/array: Likewise.
5142         * include/std/array: Likewise.
5143         * include/tr1/array: Likewise.
5144         * include/tr1/hashtable.h: Likewise.
5145         * include/tr1/regex: Likewise.
5146         * include/tr2/dynamic_bitset: Likewise.
5147         * include/bits/alloc_traits.h: Add nodiscard attribute to
5148         allocate.
5149         * include/experimental/memory_resource: Likewise.
5150         * include/ext/alloc_traits.h: Likewise.
5151         * include/ext/array_allocator.h: Likewise.
5152         * include/ext/bitmap_allocator.h: Likewise.
5153         * include/ext/debug_allocator.h: Likewise.
5154         * include/ext/extptr_allocator.h: Likewise.
5155         * include/ext/mt_allocator.h: Likewise.
5156         * include/ext/new_allocator.h: Likewise.
5157         * include/ext/pool_allocator.h: Likewise.
5158         * include/ext/throw_allocator.h: Likewise.
5159         * include/std/scoped_allocator: Likewise.
5160         * libsupc++/eh_alloc.cc: Likewise.
5161         * include/std/future: Add nodiscard attribute to async.
5162         * libsupc++/new: Add nodiscard attribute to new.
5163
5164 2019-01-18  Jonathan Wakely  <jwakely@redhat.com>
5165
5166         PR libstdc++/87514
5167         PR libstdc++/87520
5168         PR libstdc++/88782
5169         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export new symbol.
5170         * include/bits/shared_ptr.h
5171         (shared_ptr(_Sp_make_shared_tag, const Alloc&, Args&&...))
5172         (allocate_shared): Change to use new tag type.
5173         * include/bits/shared_ptr_base.h (_Sp_make_shared_tag::_S_eq):
5174         Declare new member function.
5175         (_Sp_alloc_shared_tag): Define new type.
5176         (_Sp_counted_ptr_inplace): Declare __shared_count<_Lp> as a friend.
5177         (_Sp_counted_ptr_inplace::_M_get_deleter) [!__cpp_rtti]: Use
5178         _Sp_make_shared_tag::_S_eq to check type_info.
5179         (__shared_count(Ptr, Deleter),__shared_count(Ptr, Deleter, Alloc)):
5180         Constrain to prevent being called with _Sp_alloc_shared_tag.
5181         (__shared_count(_Sp_make_shared_tag, const _Alloc&, Args&&...)):
5182         Replace constructor with ...
5183         (__shared_count(Tp*&, _Sp_alloc_shared_tag<_Alloc>, Args&&...)): Use
5184         reference parameter so address of the new object can be returned to
5185         the caller. Obtain the allocator from the tag type.
5186         (__shared_ptr(_Sp_make_shared_tag, const Alloc&, Args&&...)): Replace
5187         constructor with ...
5188         (__shared_ptr(_Sp_alloc_shared_tag<Alloc>, Args&&...)): Pass _M_ptr
5189         to the __shared_count constructor.
5190         (__allocate_shared): Change to use new tag type.
5191         * src/c++11/shared_ptr.cc (_Sp_make_shared_tag::_S_eq): Define.
5192
5193 2019-01-17  Jonathan Wakely  <jwakely@redhat.com>
5194
5195         * src/c++17/fs_ops.cc
5196         (equivalent(const path&, const path&, error_code&))
5197         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use GetFileInformationByHandle to
5198         compare files instead of relying on incomplete info returned by stat.
5199
5200         PR libstdc++/88884
5201         * src/c++17/fs_ops.cc (absolute(const path&, error_code&)): Do nothing
5202         if the path is already absolute.
5203         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Normalize root-directory.
5204         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Pass error_code to current_path.
5205
5206         PR libstdc++/88881
5207         * src/c++17/fs_ops.cc (canonical(const path&, error_code&))
5208         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Normalize path, to match behaviour
5209         of filesystem::exists.
5210         (create_directories(const path&, error_code&)): Add assertions.
5211         (status(const path&, error_code&)) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]:
5212         Add workaround for bug in _wstat for paths with trailing slash.
5213         * testsuite/27_io/filesystem/operations/create_directories.cc: Adjust
5214         for expected behaviour on mingw.
5215         * testsuite/experimental/filesystem/operations/create_directories.cc:
5216         Likewise.
5217         * testsuite/27_io/filesystem/operations/temp_directory_path.cc: Use
5218         "TMP" instead of "TMPDIR" and clean environment before each test. Do
5219         not test permissions on mingw targets.
5220
5221 2019-01-16  Jonathan Wakely  <jwakely@redhat.com>
5222
5223         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Add exports for fstream
5224         constructors and open members taking wide strings. Fix patterns for
5225         filesystem::path members to match wstring_view parameters. Add
5226         exports for shared_ptr members used by directory iterators.
5227         * src/c++17/fs_ops.cc (remove(const path&, error_code&)): Clear the
5228         error code parameter if the file doesn't exist.
5229         * src/filesystem/ops.cc (remove(const path&, error_code&)):
5230         Likewise.
5231         * testsuite/27_io/filesystem/operations/canonical.cc: Fix expected
5232         values for mingw targets, where "/" is not an absolute path. Do not
5233         test symlinks on mingw targets.
5234         * testsuite/experimental/filesystem/operations/canonical.cc: Likewise.
5235         * testsuite/27_io/filesystem/operations/copy.cc: Do not test symlinks
5236         on mingw targets.
5237         * testsuite/experimental/filesystem/operations/copy.cc: Likewise.
5238         * testsuite/27_io/filesystem/operations/create_directories.cc: Check
5239         that each component of the path is created.
5240         * testsuite/experimental/filesystem/operations/create_directories.cc:
5241         Likewise.
5242         * testsuite/27_io/filesystem/operations/exists.cc: Do not test
5243         permissions on mingw targets.
5244         * testsuite/experimental/filesystem/operations/exists.cc: Likewise.
5245         * testsuite/27_io/filesystem/operations/is_empty.cc: Likewise.
5246         * testsuite/experimental/filesystem/operations/is_empty.cc: Likewise.
5247         * testsuite/27_io/filesystem/operations/permissions.cc: XFAIL for
5248         mingw targets.
5249         * testsuite/experimental/filesystem/operations/permissions.cc:
5250         Likewise.
5251         * testsuite/27_io/filesystem/operations/remove.cc: Do not test
5252         symlinks or permissions on mingw targets.
5253         * testsuite/experimental/filesystem/operations/remove.cc: Likewise.
5254         * testsuite/27_io/filesystem/operations/remove_all.cc: Do not test
5255         symlinks on mingw targets.
5256         * testsuite/experimental/filesystem/operations/remove_all.cc:
5257         Likewise.
5258         * testsuite/27_io/filesystem/operations/status.cc: Do not test
5259         permissions on mingw targets.
5260         * testsuite/27_io/filesystem/operations/weakly_canonical.cc: Do not
5261         test symlinks on mingw targets.
5262         * testsuite/experimental/filesystem/operations/space.cc: Fix test
5263         for mingw targets.
5264
5265 2019-02-14  Ulrich Drepper  <drepper@redhat.com>
5266
5267         PR libstdc++/88738
5268         Warn about unused comparisons of shared_ptr/unique_ptr
5269         * include/bits/c++config [_GLIBCXX_NODISCARD]: Define.
5270         * include/bits/shared_ptr.h: Use it for operator ==, !=,
5271         <, <=, >, >= for shared_ptr.
5272         * include/bits/unique_ptr.h: Likewise for unique_ptr.
5273
5274 2019-01-15  Jonathan Wakely  <jwakely@redhat.com>
5275
5276         * include/bits/shared_ptr_base.h (__cpp_lib_shared_ptr_arrays): Define
5277         as 201611L, because P0497R0 changes are supported.
5278         * include/std/version (__cpp_lib_shared_ptr_arrays): Likewise.
5279
5280         * include/bits/erase_if.h [__cplusplus > 201703L]
5281         (__cpp_lib_erase_if): Only define for C++2a.
5282         * include/std/iterator [__cplusplus >= 201402L && !_GLIBCXX_DEBUG]
5283         (__cpp_lib_null_iterators): Define.
5284         * include/std/version [__cplusplus >= 201402L && !_GLIBCXX_DEBUG]
5285         (__cpp_lib_null_iterators): Define.
5286         [__cpp_impl_destroying_delete] (__cpp_lib_destroying_delete): Define.
5287
5288         * doc/xml/manual/status_cxx2017.xml: Document P0032R3 and P0307R2
5289         status.
5290         * include/bits/stl_uninitialized.h (__cpp_lib_raw_memory_algorithms):
5291         Define.
5292         * include/std/any (__cpp_lib_any): Define as 201606L, because P0032R3
5293         changes are supported.
5294         * include/std/optional (__cpp_lib_optional): Likewise.
5295         * include/std/variant (__cpp_lib_variant): Likewise.
5296         * include/std/version [!__STRICT_ANSI__]
5297         (__cpp_lib_uncaught_exceptions): Define as long integer.
5298         [__cplusplus >= 201703L] (__cpp_lib_any)
5299         (__cpp_lib_raw_memory_algorithms, __cpp_lib_uncaught_exceptions)
5300         (__cpp_lib_variant): Define for C++17.
5301         [__cplusplus >= 201703L] (__cpp_lib_optional): Update value and define
5302         as long integer.
5303         * libsupc++/exception (__cpp_lib_uncaught_exceptions): Define as long
5304         integer.
5305
5306         * doc/xml/manual/status_cxx2020.xml: Update P1123R0 status.
5307
5308 2019-01-12  Jonathan Wakely  <jwakely@redhat.com>
5309
5310         PR libstdc++/88811
5311         PR libstdc++/83306
5312         * src/filesystem/path.cc: Fix typo. If first path is empty, show []
5313         before second path.
5314         * testsuite/experimental/filesystem/filesystem_error/cons.cc: New
5315         test.
5316
5317 2019-01-11  Jonathan Wakely  <jwakely@redhat.com>
5318
5319         * doc/xml/manual/intro.xml: Include new section.
5320         * doc/xml/manual/status_cxx2017.xml: Document more
5321         implementation-defined properties of the library.
5322         * doc/xml/manual/status_cxx2020.xml: Document C++2a status.
5323         * doc/html/*: Regenerate.
5324
5325         * include/bits/refwrap.h [__cplusplus > 201703L]
5326         (_Refwrap_base_arg1, _Refwrap_base_arg2, _Reference_wrapper_base)
5327         (_Reference_wrapper_base_memfun): Do not define for C++2a.
5328         (reference_wrapper): Do not derive from _Reference_wrapper_base_memfun
5329         for C++2a.
5330         (reference_wrapper::operator()): Add static assertion.
5331         * testsuite/20_util/reference_wrapper/incomplete.cc: New test.
5332
5333         * include/std/chrono (duration_values::zero(), duration_values::min())
5334         (duration_values::max()): Add noexcept.
5335         (duration::zero(), duration::min(), duration::max()): Likewise.
5336         (time_point::zero(), time_point::min(), time_point::max()): Likewise.
5337         * testsuite/20_util/duration/requirements/noexcept.cc: New test.
5338         * testsuite/20_util/time_point/requirements/noexcept.cc: New test.
5339
5340         * include/std/version (__cpp_lib_erase_if): Move to C++20 group.
5341
5342 2019-01-11  Jakub Jelinek  <jakub@redhat.com>
5343
5344         * include/std/type_traits (__cpp_lib_is_constant_evaluated): Define.
5345         * include/std/version (__cpp_lib_is_constant_evaluated): Define.
5346
5347 2019-01-11  Jonathan Wakely  <jwakely@redhat.com>
5348
5349         PR libstdc++/88802
5350         * include/bits/functional_hash.h (hash<nullptr_t>): Define
5351         specialization for C++17 (P0513R0, LWG 2817).
5352         * testsuite/20_util/hash/nullptr.cc: New test.
5353
5354         PR libstdc++/88125
5355         * config/abi/pre/gnu.ver (GLIBCXX_3.4.6): Remove unused duplicate
5356         pattern for std::basic_stringbuf::str().
5357
5358         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Correct recent changes to
5359         basic_ostream::operator<< patterns.
5360
5361 2019-01-10  Jonathan Wakely  <jwakely@redhat.com>
5362
5363         * testsuite/27_io/filesystem/operations/last_write_time.cc: Fix
5364         test failures on targets with 32-bit time_t.
5365
5366         * include/bits/erase_if.h: Define __cpp_lib_erase_if.
5367         * include/std/deque: Likewise.
5368         * include/std/forward_list: Likewise.
5369         * include/std/list: Likewise.
5370         * include/std/string: Likewise.
5371         * include/std/vector: Likewise.
5372         * include/std/version: Likewise.
5373         * testsuite/21_strings/basic_string/erasure.cc: Test macro.
5374         * testsuite/23_containers/deque/erasure.cc: Likewise.
5375         * testsuite/23_containers/forward_list/erasure.cc: Likewise.
5376         * testsuite/23_containers/list/erasure.cc: Likewise.
5377         * testsuite/23_containers/map/erasure.cc: Likewise.
5378         * testsuite/23_containers/set/erasure.cc: Likewise.
5379         * testsuite/23_containers/unordered_map/erasure.cc: Likewise.
5380         * testsuite/23_containers/unordered_set/erasure.cc: Likewise.
5381         * testsuite/23_containers/vector/erasure.cc: Likewise.
5382
5383         * include/experimental/internet [AI_NUMERICSERV]
5384         (resolver_base::numeric_service): Define conditionally.
5385         * testsuite/experimental/net/internet/resolver/base.cc: Test it
5386         conditionally.
5387         * testsuite/experimental/net/internet/resolver/ops/lookup.cc:
5388         Likewise.
5389
5390 2019-01-10  Ville Voutilainen  <ville.voutilainen@gmail.com>
5391             Jonathan Wakely  <jwakely@redhat.com>
5392
5393         Implement LWG 2221
5394         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Tighten patterns.
5395         (GLIBCXX_3.4.26): Add new exports.
5396         * include/Makefile.am: Add ostream-inst.cc. Move string-inst.cc to
5397         correct list of sources.
5398         * include/Makefile.in: Regenerate.
5399         * include/std/ostream (operator<<(nullptr_t)): New member function.
5400         * src/c++17/ostream-inst.cc: New file.
5401         * testsuite/27_io/basic_ostream/inserters_other/char/lwg2221.cc: New
5402         test.
5403
5404 2019-01-10  Jonathan Wakely  <jwakely@redhat.com>
5405
5406         * testsuite/util/testsuite_fs.h (nonexistent_path): Include name
5407         of the source file containing the caller.
5408         * testsuite/27_io/filesystem/iterators/directory_iterator.cc: Remove
5409         directories created by test.
5410         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
5411         Likewise.
5412         * testsuite/experimental/filesystem/iterators/directory_iterator.cc:
5413         Likewise.
5414         * testsuite/experimental/filesystem/iterators/
5415         recursive_directory_iterator.cc: Likewise.
5416
5417 2019-01-10  Jakub Jelinek  <jakub@redhat.com>
5418
5419         PR tree-optimization/88775
5420         * include/bits/stl_function.h (greater<_Tp*>::operator(),
5421         less<_Tp*>::operator(), greater_equal<_Tp*>::operator(),
5422         less_equal<_Tp*>::operator()): Use __builtin_is_constant_evaluated
5423         instead of __builtin_constant_p if available.  Don't bother with
5424         the pointer comparison in C++11 and earlier.
5425
5426 2019-01-09  Sandra Loosemore  <sandra@codesourcery.com>
5427
5428         PR other/16615
5429
5430         * include/ext/bitmap_allocator.h: Mechanically replace "can not"
5431         with "cannot".
5432
5433 2019-01-09  Jonathan Wakely  <jwakely@redhat.com>
5434
5435         * testsuite/libstdc++-prettyprinters/cxx17.cc: Fix expected output
5436         for filesystem::path. Give variables more distinctive names.
5437
5438         * include/std/optional (_Optional_payload_base::_M_copy_assign): New
5439         member function to perform non-trivial assignment.
5440         (_Optional_payload_base::_M_move_assign): Likewise.
5441         (_Optional_payload<T, true, false, true>::operator=)
5442         (_Optional_payload<T, true, true, false>::operator=)
5443         (_Optional_payload<T, true, false, false>::operator=): Call
5444         _M_copy_assign and/or _M_move_assign to do non-trivial assignments.
5445
5446         PR libstdc++/88204
5447         * testsuite/26_numerics/complex/operators/more_constexpr.cc: Do not
5448         test std::complex<long double> if long double format is IBM128.
5449         * testsuite/26_numerics/complex/requirements/more_constexpr.cc:
5450         Likewise.
5451
5452 2019-01-08  Jonathan Wakely  <jwakely@redhat.com>
5453
5454         * testsuite/libstdc++-prettyprinters/compat.cc: Test printer support
5455         for old std::unique_ptr layout.
5456         * testsuite/libstdc++-prettyprinters/cxx17.cc: Fix std::variant test
5457         to become valueless. Add filesystem::path tests.
5458
5459         PR libstdc++/87855
5460         * include/std/optional (_Optional_payload_base): New class template
5461         for common code hoisted from _Optional_payload specializations. Use
5462         a template for the union, to allow a partial specialization for
5463         types with non-trivial destructors. Add constructors for in-place
5464         initialization to the union.
5465         (_Optional_payload(bool, const _Optional_payload&)): Use _M_construct
5466         to perform non-trivial copy construction, instead of relying on
5467         non-standard copy elision in a delegating constructor.
5468         (_Optional_payload(bool, _Optional_payload&&)): Likewise for
5469         non-trivial move construction.
5470         (_Optional_payload): Derive from _Optional_payload_base and use it
5471         for everything except the non-trivial assignment operators, which are
5472         defined as needed.
5473         (_Optional_payload<false, C, M>): Derive from the specialization
5474         _Optional_payload<true, false, false> and add a destructor.
5475         (_Optional_base_impl::_M_destruct, _Optional_base_impl::_M_reset):
5476         Forward to corresponding members of _Optional_payload.
5477         (_Optional_base_impl::_M_is_engaged, _Optional_base_impl::_M_get):
5478         Hoist common members from _Optional_base.
5479         (_Optional_base): Make all members and base class public.
5480         (_Optional_base::_M_get, _Optional_base::_M_is_engaged): Move to
5481         _Optional_base_impl.
5482         * python/libstdcxx/v6/printers.py (StdExpOptionalPrinter): Add
5483         support for new std::optional layout.
5484         * testsuite/libstdc++-prettyprinters/compat.cc: New test.
5485
5486         PR libstdc++/88066
5487         * include/bits/locale_conv.h: Use <> for includes not "".
5488         * include/ext/random: Likewise.
5489         * include/ext/vstring.h: Likewise.
5490
5491 2019-01-08  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
5492
5493         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Tighten existing patterns.
5494         (GLIBCXX_3.4.21): Likewise.
5495
5496 2019-01-08  Jonathan Wakely  <jwakely@redhat.com>
5497
5498         PR libstdc++/88749
5499         * src/filesystem/ops.cc (last_write_time): Fix preprocessor condition
5500         to match the one that controls whether utimbuf and utime are declared.
5501
5502 2019-01-07  Jonathan Wakely  <jwakely@redhat.com>
5503
5504         PR libstdc++/87787
5505         * include/bits/char_traits.h (char_traits::move): Do not pass null
5506         pointers to memmove.
5507         * include/bits/locale_facets.h
5508         (ctype<char>::widen(const char*, const char*, char*)): Do not
5509         pass null pointers to memcpy.
5510         (ctype<char>::narrow(const char*, const char*, char, char*)):
5511         Likewise.
5512         (ctype<char>::do_widen(const char*, const char*, char*)):
5513         Likewise.
5514         (ctype<char>::do_narrow(const char*, const char*, char, char*)):
5515         Likewise.
5516
5517         * doc/xml/manual/spine.xml: Update copyright years.
5518         * doc/xml/manual/status_cxx2017.xml: Adjust note about -lstdc++fs.
5519         * doc/xml/manual/using.xml: Remove requirement to link with -lstdc++fs
5520         for C++17 filesystem library.
5521         * doc/html/*: Regenerate.
5522
5523         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for truncate.
5524         * config.h.in: Regenerate.
5525         * config/abi/pre/gnu.ver: Order patterns for filesystem operations
5526         alphabetically and add missing entries for copy_symlink,
5527         hard_link_count, rename, and resize_file.
5528         * configure: Regenerate.
5529         * src/c++17/fs_ops.cc (resize_file): Remove #if so posix::truncate is
5530         used unconditionally.
5531         * src/filesystem/ops-common.h (__gnu_posix::truncate)
5532         [!_GLIBCXX_HAVE_TRUNCATE]: Provide fallback definition that only
5533         supports truncating to zero length.
5534         * testsuite/27_io/filesystem/operations/all.cc: New test.
5535         * testsuite/27_io/filesystem/operations/resize_file.cc: New test.
5536
5537 2019-01-06  Jonathan Wakely  <jwakely@redhat.com>
5538
5539         PR libstdc++/86756
5540         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for utime and
5541         lstat and define _GLIBCXX_USE_UTIME and _GLIBCXX_USE_LSTAT.
5542         * config.h.in: Regenerate.
5543         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export symbols for
5544         remaining std::filesystem types and functions.
5545         * configure: Regenerate.
5546         * src/c++17/Makefile.am: Add C++17 filesystem sources.
5547         * src/c++17/Makefile.in: Regenerate.
5548         * src/c++17/cow-fs_dir.cc: Move src/filesystem/cow-std-dir.cc to
5549         here, and change name of included file.
5550         * src/c++17/cow-fs_ops.cc: Move src/filesystem/cow-std-ops.cc to
5551         here, and change name of included file.
5552         * src/c++17/fs_dir.cc: Move src/filesystem/std-dir.cc to here. Change
5553         path to dir-common.h.
5554         * src/c++17/fs_ops.cc: Move src/filesystem/std-ops.cc to here. Change
5555         path to ops-common.h. Disable -Wunused-parameter warnings.
5556         (internal_file_clock): Define unconditionally.
5557         [!_GLIBCXX_HAVE_SYS_STAT_H] (internal_file_clock::from_stat): Do not
5558         define.
5559         (do_copy_file, do_space): Move definitions to ops.common.h.
5560         (copy, file_size, hard_link_count, last_write_time, space): Only
5561         perform operation when _GLIBCXX_HAVE_SYS_STAT_H is defined, otherwise
5562         report an error.
5563         (last_write_time, read_symlink): Remove unused attributes from
5564         parameters.
5565         * src/filesystem/Makefile.am: Remove C++17 filesystem sources.
5566         * src/filesystem/Makefile.in: Regenerate.
5567         * src/filesystem/cow-std-dir.cc: Move to src/c++17/cow-fs_dir.cc.
5568         * src/filesystem/cow-std-ops.cc: Move to src/c++17/cow-fs_ops.cc.
5569         * src/filesystem/std-dir.cc: Move to src/c++17/fs_dir.cc.
5570         * src/filesystem/std-ops.cc: Move to src/c++17/fs_ops.cc.
5571         * src/filesystem/dir-common.h [!_GLIBCXX_HAVE_DIRENT_H]: Define
5572         dummy types and functions instead of using #error.
5573         * src/filesystem/dir.cc [!_GLIBCXX_HAVE_DIRENT_H]: Use #error.
5574         * src/filesystem/ops-common.h [!_GLIBCXX_USE_LSTAT] (lstat): Define
5575         in terms of stat.
5576         [!_GLIBCXX_HAVE_UNISTD_H]: Define dummy types and functions.
5577         (do_copy_file, do_space): Move definitions here from std-ops.cc.
5578         * src/filesystem/ops.cc: Adjust calls to do_copy_file and do_space
5579         to account for new namespace.
5580         * testsuite/27_io/filesystem/directory_entry/86597.cc: Remove
5581         -lstdc++fs from dg-options.
5582         * testsuite/27_io/filesystem/directory_entry/lwg3171.cc: Likewise.
5583         * testsuite/27_io/filesystem/file_status/1.cc: Likewise.
5584         * testsuite/27_io/filesystem/filesystem_error/cons.cc: Likewise.
5585         * testsuite/27_io/filesystem/filesystem_error/copy.cc: Likewise.
5586         * testsuite/27_io/filesystem/iterators/directory_iterator.cc:
5587         Likewise.
5588         * testsuite/27_io/filesystem/iterators/pop.cc: Likewise.
5589         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
5590         Likewise.
5591         * testsuite/27_io/filesystem/operations/absolute.cc: Likewise.
5592         * testsuite/27_io/filesystem/operations/canonical.cc: Likewise.
5593         * testsuite/27_io/filesystem/operations/copy.cc: Likewise.
5594         * testsuite/27_io/filesystem/operations/copy_file.cc: Likewise.
5595         * testsuite/27_io/filesystem/operations/create_directories.cc:
5596         Likewise.
5597         * testsuite/27_io/filesystem/operations/create_directory.cc: Likewise.
5598         * testsuite/27_io/filesystem/operations/create_symlink.cc: Likewise.
5599         * testsuite/27_io/filesystem/operations/current_path.cc: Likewise.
5600         * testsuite/27_io/filesystem/operations/equivalent.cc: Likewise.
5601         * testsuite/27_io/filesystem/operations/exists.cc: Likewise.
5602         * testsuite/27_io/filesystem/operations/file_size.cc: Likewise.
5603         * testsuite/27_io/filesystem/operations/is_empty.cc: Likewise.
5604         * testsuite/27_io/filesystem/operations/last_write_time.cc: Likewise.
5605         * testsuite/27_io/filesystem/operations/permissions.cc: Likewise.
5606         * testsuite/27_io/filesystem/operations/proximate.cc: Likewise.
5607         * testsuite/27_io/filesystem/operations/read_symlink.cc: Likewise.
5608         * testsuite/27_io/filesystem/operations/relative.cc: Likewise.
5609         * testsuite/27_io/filesystem/operations/remove.cc: Likewise.
5610         * testsuite/27_io/filesystem/operations/remove_all.cc: Likewise.
5611         * testsuite/27_io/filesystem/operations/space.cc: Likewise.
5612         * testsuite/27_io/filesystem/operations/status.cc: Likewise.
5613         * testsuite/27_io/filesystem/operations/symlink_status.cc: Likewise.
5614         * testsuite/27_io/filesystem/operations/temp_directory_path.cc:
5615         Likewise.
5616         * testsuite/27_io/filesystem/operations/weakly_canonical.cc: Likewise.
5617
5618
5619         PR libstdc++/86756
5620         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Make various patterns for
5621         typeinfo and vtables less greedy.
5622         (GLIBCXX_3.4.26): Export symbols for std::filesystem::path.
5623         * src/c++17/Makefile.am: Add fs_path.cc and cow-fs_path.cc.
5624         * src/c++17/Makefile.in: Regenerate.
5625         * src/c++17/cow-fs_path.cc: Move src/filesystem/cow-std-path.cc to
5626         here, and change name of included file.
5627         * src/c++17/fs_path.cc: Move src/filesystem/std-path.cc to here.
5628         * src/filesystem/Makefile.am: Remove std-path.cc and cow-std-path.cc
5629         from sources.
5630         * src/filesystem/Makefile.in: Regenerate.
5631         * src/filesystem/cow-std-path.cc: Move to src/c++17/cow-fs_path.cc.
5632         * src/filesystem/std-path.cc: Move to src/c++17/fs_path.cc.
5633         * testsuite/27_io/filesystem/path/append/path.cc: Remove -lstdc++fs
5634         from dg-options and remove dg-require-filesystem-ts.
5635         * testsuite/27_io/filesystem/path/append/source.cc: Likewise.
5636         * testsuite/27_io/filesystem/path/assign/assign.cc: Likewise.
5637         * testsuite/27_io/filesystem/path/assign/copy.cc: Likewise.
5638         * testsuite/27_io/filesystem/path/compare/compare.cc: Likewise.
5639         * testsuite/27_io/filesystem/path/compare/lwg2936.cc: Likewise.
5640         * testsuite/27_io/filesystem/path/compare/path.cc: Likewise.
5641         * testsuite/27_io/filesystem/path/compare/strings.cc: Likewise.
5642         * testsuite/27_io/filesystem/path/concat/path.cc: Likewise.
5643         * testsuite/27_io/filesystem/path/concat/strings.cc: Likewise.
5644         * testsuite/27_io/filesystem/path/construct/80762.cc: Likewise.
5645         * testsuite/27_io/filesystem/path/construct/copy.cc: Likewise.
5646         * testsuite/27_io/filesystem/path/construct/default.cc: Likewise.
5647         * testsuite/27_io/filesystem/path/construct/format.cc: Likewise.
5648         * testsuite/27_io/filesystem/path/construct/locale.cc: Likewise.
5649         * testsuite/27_io/filesystem/path/construct/range.cc: Likewise.
5650         * testsuite/27_io/filesystem/path/construct/string_view.cc: Likewise.
5651         * testsuite/27_io/filesystem/path/decompose/extension.cc: Likewise.
5652         * testsuite/27_io/filesystem/path/decompose/filename.cc: Likewise.
5653         * testsuite/27_io/filesystem/path/decompose/parent_path.cc: Likewise.
5654         * testsuite/27_io/filesystem/path/decompose/relative_path.cc: Likewise.
5655         * testsuite/27_io/filesystem/path/decompose/root_directory.cc:
5656         Likewise.
5657         * testsuite/27_io/filesystem/path/decompose/root_name.cc: Likewise.
5658         * testsuite/27_io/filesystem/path/decompose/root_path.cc: Likewise.
5659         * testsuite/27_io/filesystem/path/decompose/stem.cc: Likewise.
5660         * testsuite/27_io/filesystem/path/generation/normal.cc: Likewise.
5661         * testsuite/27_io/filesystem/path/generation/normal2.cc: Likewise.
5662         * testsuite/27_io/filesystem/path/generation/proximate.cc: Likewise.
5663         * testsuite/27_io/filesystem/path/generation/relative.cc: Likewise.
5664         * testsuite/27_io/filesystem/path/generic/generic_string.cc: Likewise.
5665         * testsuite/27_io/filesystem/path/itr/components.cc: Likewise.
5666         * testsuite/27_io/filesystem/path/itr/traversal.cc: Likewise.
5667         * testsuite/27_io/filesystem/path/modifiers/clear.cc: Likewise.
5668         * testsuite/27_io/filesystem/path/modifiers/make_preferred.cc:
5669         Likewise.
5670         * testsuite/27_io/filesystem/path/modifiers/remove_filename.cc:
5671         Likewise.
5672         * testsuite/27_io/filesystem/path/modifiers/replace_extension.cc:
5673         Likewise.
5674         * testsuite/27_io/filesystem/path/modifiers/replace_filename.cc:
5675         Likewise.
5676         * testsuite/27_io/filesystem/path/modifiers/swap.cc: Likewise.
5677         * testsuite/27_io/filesystem/path/native/string.cc: Likewise.
5678         * testsuite/27_io/filesystem/path/nonmember/append.cc: Likewise.
5679         * testsuite/27_io/filesystem/path/nonmember/hash_value.cc: Likewise.
5680         * testsuite/27_io/filesystem/path/query/empty.cc: Likewise.
5681         * testsuite/27_io/filesystem/path/query/has_extension.cc: Likewise.
5682         * testsuite/27_io/filesystem/path/query/has_filename.cc: Likewise.
5683         * testsuite/27_io/filesystem/path/query/has_parent_path.cc: Likewise.
5684         * testsuite/27_io/filesystem/path/query/has_relative_path.cc: Likewise.
5685         * testsuite/27_io/filesystem/path/query/has_root_directory.cc:
5686         Likewise.
5687         * testsuite/27_io/filesystem/path/query/has_root_name.cc: Likewise.
5688         * testsuite/27_io/filesystem/path/query/has_root_path.cc: Likewise.
5689         * testsuite/27_io/filesystem/path/query/has_stem.cc: Likewise.
5690         * testsuite/27_io/filesystem/path/query/is_absolute.cc: Likewise.
5691         * testsuite/27_io/filesystem/path/query/is_relative.cc: Likewise.
5692
5693         PR libstdc++/87431
5694         * include/std/variant (_Variant_storage<true, _Types...>::_M_valid):
5695         Check is_trivially_copyable instead of is_scalar.
5696         (variant::emplace<N, Args>(Args&&...)): If construction of the new
5697         contained value can throw and its type is trivially copyable then
5698         construct into a temporary variant and move from it, to provide the
5699         strong exception safety guarantee.
5700         (variant::emplace<N, U, Args>(initializer_list<U>, Args&&...)):
5701         Likewise.
5702         * testsuite/20_util/variant/87431.cc: New test.
5703         * testsuite/20_util/variant/run.cc: Adjust test so that throwing
5704         conversion causes valueless state.
5705
5706         PR libstdc++/88607
5707         * testsuite/17_intro/headers/c++1998/charset.cc: New test.
5708         * testsuite/17_intro/headers/c++2011/charset.cc: New test.
5709         * testsuite/17_intro/headers/c++2014/charset.cc: New test.
5710         * testsuite/17_intro/headers/c++2017/charset.cc: New test.
5711         * testsuite/17_intro/headers/c++2020/charset.cc: New test.
5712
5713 2019-01-05  Jonathan Wakely  <jwakely@redhat.com>
5714
5715         * include/bits/fs_fwd.h (__file_clock): Define new clock.
5716         (file_time_type): Redefine in terms of __file_clock.
5717         * src/filesystem/ops-common.h (file_time): Add FIXME comment about
5718         overflow.
5719         * src/filesystem/std-ops.cc (is_set(perm_options, perm_options)): Give
5720         internal linkage.
5721         (internal_file_lock): New helper type for accessing __file_clock.
5722         (do_copy_file): Use internal_file_lock to convert system time to
5723         file_time_type.
5724         (last_write_time(const path&, error_code&)): Likewise.
5725         (last_write_time(const path&, file_time_type, error_code&)): Likewise.
5726
5727 2019-01-04  Jonathan Wakely  <jwakely@redhat.com>
5728
5729         * config/abi/pre/gnu.ver (GLIBCXX_3.4.21): Make patterns less greedy
5730         for const member functions of std::basic_string.
5731         (GLIBCXX_3.4.26): Export member functions of std::basic_string added
5732         in C++17.
5733         * include/bits/basic_string.h (basic_string(__sv_wrapper, const A&)):
5734         Make non-standard constructor private.
5735         [!_GLIBCXX_USE_CXX11_ABI] (basic_string(__sv_wrapper, const A&)):
5736         Likewise.
5737         * include/bits/basic_string.tcc (std::string, std::wstring): Declare
5738         explicit instantiations for C++17 as well as earlier dialects.
5739         * src/c++17/Makefile.am: Add new source files.
5740         * src/c++17/Makefile.in: Regenerate.
5741         * src/c++17/cow-string-inst.cc: New file defining explicit
5742         instantiations for basic_string member functions added in C++17.
5743         * src/c++17/string-inst.cc: Likewise.
5744
5745         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export allocator-extended
5746         copy/move constructors for old std::basic_string.
5747         * include/bits/basic_string.h [!_GLIBCXX_USE_CXX11_ABI]
5748         (basic_string::reference, basic_string::const_reference): Define
5749         as plain references for C++11 and later.
5750         (basic_string::basic_string()): Put constructor body outside
5751         preprocessor conditional groups.
5752         (basic_string::basic_string(basic_string&&)): Move _Alloc_hider
5753         instead of copying it.
5754         (basic_string::basic_string(const basic_string&, const _Alloc&)):
5755         Define.
5756         (basic_string::basic_string(basic_string&&, const _Alloc&)):
5757         Define.
5758         * include/bits/fs_path.h [!_GLIBCXX_USE_CXX11_ABI]: Remove special
5759         cases for old basic_string.
5760         * testsuite/21_strings/basic_string/cons/char/8.cc: Test
5761         allocator-extended constructors unconditionally. Add extra members to
5762         allocator type when using old string ABI.
5763         * testsuite/21_strings/basic_string/allocator/71964.cc: Enable test
5764         for old string ABI.
5765         * testsuite/21_strings/basic_string/cons/wchar_t/8.cc: Likewise.
5766
5767         * testsuite/23_containers/list/61347.cc: Avoid spurious failure when
5768         -fno-inline added to test flags.
5769
5770         * testsuite/21_strings/basic_string/requirements/
5771         explicit_instantiation/debug.cc: Remove XFAIL for old ABI.
5772
5773         * testsuite/27_io/filesystem/filesystem_error/copy.cc: Fix static
5774         assertion failures with old std::string ABI.
5775
5776         * include/bits/fs_path.h (path::_List::erase): Replace both overloads
5777         with ...
5778         (path::pop_back(), path::_M_erase_from(const_iterator)): New member
5779         functions that will only erase elements at the end.
5780         * src/filesystem/std-path.cc (path::_List::_Impl::pop_back()): Define.
5781         (path::_List::_Impl::_M_erase_from(const_iterator)): Define.
5782         (path::_List::operator=(const _List&)): Use _M_erase_from(p) instead
5783         of erase(p, end()).
5784         (path::_List::pop_back()): Define.
5785         (path::_List::_M_erase_from(const_iterator)): Define.
5786         (path::operator/=(const path&)): Use pop_back to remove last component
5787         and _M_erase_from to remove multiple components.
5788         (path::_M_append(basic_string_view<value_type>)): Likewise.
5789         (path::operator+=(const path&)): Likewise.
5790         (path::_M_concat(basic_string_view<value_type>)): Likewise.
5791         (path::remove_filename()): Likewise.
5792         (path::lexically_normal()): Use _List::_Impl iterators instead of
5793         path::iterator. Use pop_back to remove components from the end. Clear
5794         trailing filename, instead of using erase(const_iterator) to remove
5795         a non-final component.
5796         * testsuite/27_io/filesystem/path/generation/normal.cc: Test
5797         additional cases.
5798         * testsuite/27_io/filesystem/path/generation/normal2.cc: New test.
5799
5800         * src/filesystem/std-path.cc (path::operator+=(const path&)): Fix
5801         incorrect treatment of empty filename after trailing slash.
5802         * testsuite/27_io/filesystem/path/concat/path.cc: Test problem case.
5803
5804         * testsuite/21_strings/basic_string/modifiers/assign/char/
5805         move_assign_optim.cc: Avoid spurious failure when -fno-inline added
5806         to test flags.
5807         * testsuite/21_strings/basic_string/modifiers/assign/wchar_t/
5808         move_assign_optim.cc: Likewise.
5809
5810 2019-01-03  Jonathan Wakely  <jwakely@redhat.com>
5811             Jakub Jelinek  <jakub@redhat.com>
5812
5813         PR libstdc++/88607
5814         * include/experimental/memory: Replace UTF-8 quote characters.
5815         * include/std/future: Replace UTF-8 "em dash" characters.
5816
5817 2019-01-03  Jonathan Wakely  <jwakely@redhat.com>
5818
5819         PR libstdc++/88607
5820         * include/bits/forward_list.h: Replace UTF-8 "ligature fi" character.
5821         * include/debug/forward_list: Likewise.
5822         * include/experimental/bits/shared_ptr.h: Remove UTF-8 "section sign"
5823         character.
5824         * include/experimental/chrono: Likewise.
5825         * include/experimental/functional: Likewise.
5826         * include/experimental/ratio: Likewise.
5827         * include/experimental/system_error: Likewise.
5828         * include/experimental/tuple: Likewise.
5829         * include/experimental/type_traits: Likewise.
5830         * include/parallel/workstealing.h: Replace UTF-8 "en dash" character.
5831         * include/parallel/multiseq_selection.h: Likewise.
5832
5833         PR libstdc++/88681
5834         * config/abi/pre/gnu.ver: Add missing exports.
5835         * testsuite/22_locale/collate_byname/88681.cc: New test.
5836         * testsuite/22_locale/time_get/get/char/88681.cc: New test.
5837         * testsuite/22_locale/time_get/get/wchar_t/88681.cc: New test.
5838
5839 2019-01-02  Jonathan Wakely  <jwakely@redhat.com>
5840
5841         * testsuite/23_containers/map/cons/deduction.cc: Test deduction from
5842         initializer_list<value_type> and from input iterator ranges.
5843         * testsuite/23_containers/multimap/cons/deduction.cc: Likewise.
5844
5845         * testsuite/experimental/string_view/element_access/char/empty.cc:
5846         Fix year range in copyright header.
5847
5848 2019-01-02  Joel Brobecker  <brobecker@adacore.com>
5849
5850         * testsuite/21_strings/basic_string_view/element_access/char/empty.cc:
5851         Fix year range in copyright header.
5852
5853 2019-01-01  Jakub Jelinek  <jakub@redhat.com>
5854
5855         Update copyright years.
5856 \f
5857 Copyright (C) 2019 Free Software Foundation, Inc.
5858
5859 Copying and distribution of this file, with or without modification,
5860 are permitted in any medium without royalty provided the copyright
5861 notice and this notice are preserved.