libstdc++-v3/ChangeLog

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