libstdc++-v3/ChangeLog

   1 2019-10-22  Andreas Schwab  <schwab@suse.de>
   2
   3         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
   4
   5 2019-10-18  Jonathan Wakely  <jwakely@redhat.com>
   6
   7         PR libstdc++/92143
   8         * libsupc++/new_opa.cc (operator new) [__APPLE__]: Increase alignment
   9         to at least sizeof(void*).
  10
  11         * include/bits/range_cmp.h (ranges::less::operator()): Inline the
  12         logic from std::less::operator() to remove the dependency on it.
  13
  14 2019-10-17  Jonathan Wakely  <jwakely@redhat.com>
  15
  16         * doc/doxygen/user.cfg.in (INPUT): Add new C++17 and C++20 headers.
  17
  18         * include/Makefile.am: Add new header.
  19         * include/Makefile.in: Regenerate.
  20         * include/bits/range_cmp.h: New header for C++20 function objects.
  21         * include/std/functional: Include new header.
  22         * testsuite/20_util/function_objects/identity/1.cc: New test.
  23         * testsuite/20_util/function_objects/range.cmp/equal_to.cc: New test.
  24         * testsuite/20_util/function_objects/range.cmp/greater.cc: New test.
  25         * testsuite/20_util/function_objects/range.cmp/greater_equal.cc: New
  26         test.
  27         * testsuite/20_util/function_objects/range.cmp/less.cc: New test.
  28         * testsuite/20_util/function_objects/range.cmp/less_equal.cc: New test.
  29         * testsuite/20_util/function_objects/range.cmp/not_equal_to.cc: New
  30         test.
  31
  32         PR libstdc++/92124
  33         * include/bits/forward_list.h
  34         (_M_move_assign(forward_list&&, false_type)): Do not use
  35         __make_move_if_noexcept, instead move unconditionally.
  36         * include/bits/stl_deque.h (_M_move_assign2(deque&&, false_type)):
  37         Likewise.
  38         * include/bits/stl_list.h (_M_move_assign(list&&, false_type)):
  39         Likewise.
  40         * include/bits/stl_vector.h (_M_move_assign(vector&&, false_type)):
  41         Likewise.
  42         * testsuite/23_containers/vector/92124.cc: New test.
  43
  44 2019-10-16  Jonathan Wakely  <jwakely@redhat.com>
  45
  46         * include/bits/c++config (_GLIBCXX_BUILTIN_IS_SAME_AS): Define to
  47         one of __is_same_as or __is_same when available.
  48         * include/std/concepts (__detail::__same_as): Use std::is_same_v.
  49         * include/std/type_traits (is_same) [_GLIBCXX_BUILTIN_IS_SAME_AS]:
  50         Use new macro instead of __is_same_as.
  51         (is_same) [!_GLIBCXX_BUILTIN_IS_SAME_AS]: Restore partial
  52         specialization.
  53         (is_same_v) [_GLIBCXX_BUILTIN_IS_SAME_AS]: Use new macro.
  54         (is_same_v) [!_GLIBCXX_BUILTIN_IS_SAME_AS]: Use std::is_same.
  55
  56 2019-10-16  François Dumont  <fdumont@gcc.gnu.org>
  57
  58         * src/c++11/debug.cc (print_field): Replace constness_names <unknown>
  59         entry with <unknown constness>. Replace state_names <unknown> entry with
  60         <unknown state>.
  61
  62 2019-10-11  Jonathan Wakely  <jwakely@redhat.com>
  63
  64         * include/Makefile.am: Add new header.
  65         * include/Makefile.in: Regenerate.
  66         * include/precompiled/stdc++.h: Include <concepts>.
  67         * include/std/concepts: New header for C++20.
  68         * include/std/version (__cpp_lib_concepts): Define.
  69         * scripts/create_testsuite_files: Look for test files in new std
  70         directory.
  71         * testsuite/libstdc++-dg/conformance.exp: Likewise.
  72         * testsuite/std/concepts/concepts.callable/invocable.cc: New test.
  73         * testsuite/std/concepts/concepts.callable/regular_invocable.cc: New
  74         test.
  75         * testsuite/std/concepts/concepts.callable/relation.cc: New test.
  76         * testsuite/std/concepts/concepts.callable/strictweakorder.cc: New
  77         test.
  78         * testsuite/std/concepts/concepts.lang/concept.arithmetic/
  79         floating_point.cc: New test.
  80         * testsuite/std/concepts/concepts.lang/concept.arithmetic/integral.cc:
  81         New test.
  82         * testsuite/std/concepts/concepts.lang/concept.arithmetic/
  83         signed_integral.cc: New test.
  84         * testsuite/std/concepts/concepts.lang/concept.arithmetic/
  85         unsigned_integral.cc: New test.
  86         * testsuite/std/concepts/concepts.lang/concept.assignable/1.cc: New
  87         test.
  88         * testsuite/std/concepts/concepts.lang/concept.common/1.cc: New test.
  89         * testsuite/std/concepts/concepts.lang/concept.commonref/1.cc: New
  90         test.
  91         * testsuite/std/concepts/concepts.lang/concept.constructible/1.cc:
  92         New test.
  93         * testsuite/std/concepts/concepts.lang/concept.convertible/1.cc:
  94         New test.
  95         * testsuite/std/concepts/concepts.lang/concept.copyconstructible/1.cc:
  96         New test.
  97         * testsuite/std/concepts/concepts.lang/concept.defaultconstructible/
  98         1.cc: New test.
  99         * testsuite/std/concepts/concepts.lang/concept.derived/1.cc:
 100         New test.
 101         * testsuite/std/concepts/concepts.lang/concept.destructible/1.cc:
 102         New test.
 103         * testsuite/std/concepts/concepts.lang/concept.moveconstructible/1.cc:
 104         New test.
 105         * testsuite/std/concepts/concepts.lang/concept.same/1.cc:
 106         New test.
 107         * testsuite/std/concepts/concepts.lang/concept.swappable/swap.cc:
 108         New test.
 109         * testsuite/std/concepts/concepts.lang/concept.swappable/swappable.cc:
 110         New test.
 111         * testsuite/std/concepts/concepts.lang/concept.swappable/
 112         swappable_with.cc: New test.
 113         * testsuite/std/concepts/concepts.object/copyable.cc: New test.
 114         * testsuite/std/concepts/concepts.object/movable.cc: New test.
 115         * testsuite/std/concepts/concepts.object/regular.cc: New test.
 116         * testsuite/std/concepts/concepts.object/semiregular.cc: New test.
 117
 118         * include/std/type_traits (is_same): Replace partial specialization
 119         by using __is_same_as built-in in primary template.
 120         (is_same_v): Use __is_same_as built-in instead of instantiating the
 121         is_same trait.
 122
 123         PR libstdc++/92059
 124         * include/tr2/dynamic_bitset (__dynamic_bitset_base): Define all
 125         special member functions as defaulted. Add noexcept to most members.
 126         (__dynamic_bitset_base(size_t, unsigned long long, const _Alloc&)):
 127         Mask off unwanted bits in the __val parameter. Avoid undefined left
 128         shifts.
 129         (__dynamic_bitset_base::_M_assign): Remove.
 130         (__dynamic_bitset_base::_M_do_reset): Use std::fill.
 131         (__dynamic_bitset_base::_M_are_all_aux): Avoid integer promotion when
 132         block_type has lower rank than int.
 133         (dynamic_bitset): Add noexcept to most members. Use injected-class-name
 134         in return types and parameter types.
 135         (dynamic_bitset::_M_Nb): Add default member initializer.
 136         (dynamic_bitset(), dynamic_bitset(const dynamic_bitset&)): Define as
 137         defaulted.
 138         (dynamic_bitset(dynamic_bitset&&)): Clear source object after move.
 139         (dynamic_bitset::operator=(const dynamic_bitset&)): Define as
 140         defaulted.
 141         (dynamic_bitset::operator=(dynamic_bitset&&)): Add noexcept-specifier.
 142         Define without using swap, to propagate allocator correctly.
 143         (dynamic_bitset(const char*, const _Alloc&)): Use strlen.
 144         (dynamic_bitset::_M_do_sanitize, dynamic_bitset::_M_do_fill): Use
 145         casts to avoid unwanted integer promotions.
 146         (dynamic_bitset::_M_copy_from_ptr): Rearrange template parameters and
 147         add default template arguments and default argument to simplify usage.
 148         (dynamic_bitset::_M_copy_from_string): Adjust call to _M_copy_from_ptr.
 149         (operator==(const dynamic_bitset&, const dynamic_bitset&))
 150         (operator<(const dynamic_bitset&, const dynamic_bitset&)): Use _M_Nb.
 151         * include/tr2/dynamic_bitset.tcc (dynamic_bitset::_M_copy_from_ptr):
 152         Adjust template parameters to match declaration.
 153         * testsuite/tr2/dynamic_bitset/cmp.cc: New test.
 154         * testsuite/tr2/dynamic_bitset/cons.cc: New test.
 155         * testsuite/tr2/dynamic_bitset/copy.cc: New test.
 156         * testsuite/tr2/dynamic_bitset/move.cc: New test.
 157         * testsuite/tr2/dynamic_bitset/pr92059.cc: New test.
 158
 159         * include/bits/charconv.h (__to_chars_len): Avoid -Wsign-compare
 160         warnings.
 161
 162 2019-10-10  Jonathan Wakely  <jwakely@redhat.com>
 163
 164         PR libstdc++/91057
 165         * src/c++98/locale.cc [_GLIBCXX_LONG_DOUBLE_COMPAT]
 166         (find_ldbl_sync_facet): Fix parameter type and missing return.
 167
 168 2019-10-09  Marek Polacek  <polacek@redhat.com>
 169
 170         PR c++/91364 - P0388R4: Permit conversions to arrays of unknown bound.
 171         PR c++/69531 - DR 1307: Differently bounded array parameters.
 172         PR c++/88128 - DR 330: Qual convs and pointers to arrays of pointers.
 173         * testsuite/23_containers/span/lwg3255.cc: Adjust test to match the
 174         post-P0388R4 behavior.
 175
 176 2019-10-09  Jonathan Wakely  <jwakely@redhat.com>
 177
 178         PR libstdc++/91057
 179         * src/c++98/locale.cc (locale::id::_M_id()) [__GTHREADS]: Use atomic
 180         compare-exchange or double-checked lock to ensure only one thread sets
 181         the _M_index variable.
 182         [_GLIBCXX_LONG_DOUBLE_COMPAT]: Call find_ldbl_sync_facet to detect
 183         facets that share another facet's ID.
 184         [_GLIBCXX_LONG_DOUBLE_COMPAT] (find_ldbl_sync_facet): New function.
 185
 186         PR libstdc++/78552
 187         * src/c++98/locale_init.cc (locale::classic()): Do not construct a new
 188         locale object for every call.
 189         (locale::_S_initialize_once()): Construct C locale here.
 190
 191 2019-10-08  Jonathan Wakely  <jwakely@redhat.com>
 192
 193         * doc/Makefile.am (doc-html-docbook-regenerate): New target.
 194         (${docbook_outdir}/html): Do not create unused 'html/ext' directory.
 195         * doc/Makefile.in: Regenerate.
 196         * doc/xml/manual/documentation_hacking.xml: Document new target.
 197         * doc/html/*: Regenerate.
 198
 199         * doc/xml/manual/allocator.xml: Use archived copy of CUJ article.
 200         * doc/html/*: Regenerate.
 201
 202 2019-10-06  François Dumont  <fdumont@gcc.gnu.org>
 203
 204         * include/bits/stl_algo.h
 205         (__copy_n_a(_IIte, _Size, _OIte)): New.
 206         (__copy_n_a(istreambuf_iterator<>, _Size, _CharT*)): New declaration.
 207         (__copy_n(_IIte, _Size, _OIte, input_iterator_tag)): Adapt to use
 208         latter.
 209         * include/bits/streambuf_iterator.h (istreambuf_iterator<>): Declare
 210         std::__copy_n_a friend.
 211         (__copy_n_a(istreambuf_iterator<>, _Size, _CharT*)): New.
 212         * testsuite/25_algorithms/copy_n/istreambuf_iterator/1.cc: New.
 213         * testsuite/25_algorithms/copy_n/istreambuf_iterator/1_neg.cc: New.
 214         * testsuite/25_algorithms/copy_n/istreambuf_iterator/2_neg.cc: New.
 215
 216         * include/bits/stl_iterator_base_types.h (__iterator_category_t): Define
 217         for C++11.
 218         (_RequireInputIte): Likewise and use __enable_if_t.
 219         * include/std/numeric
 220         (__is_random_access_iter): Use __iterator_category_t.
 221
 222         * include/bits/stl_algo.h (copy_n): Add __glibcxx_requires_can_increment
 223         debug checks.
 224         * testsuite/25_algorithms/copy_n/debug/1_neg.cc: New.
 225         * testsuite/25_algorithms/copy_n/debug/2_neg.cc: New.
 226
 227 2019-10-04  François Dumont  <fdumont@gcc.gnu.org>
 228
 229         * include/debug/forward_list
 230         (_Sequence_traits<__debug::forward_list<>>::_S_size): Returns __dp_sign
 231         distance when not empty.
 232         * include/debug/list (_Sequence_traits<__debug::list<>>::_S_size):
 233         Likewise.
 234         * include/debug/helper_functions.h (__dp_sign_max_size): New
 235         _Distance_precision enum entry.
 236         (__valid_range_aux(_IIte, _IIte, _Distance_traits<>::__type,
 237         __false_type)): Adapt.
 238         * include/debug/safe_iterator.tcc
 239         (_Safe_iterator<>::_M_get_distance_to(const _Safe_iterator&)): Review
 240         distance computation.
 241
 242 2019-10-04  Jonathan Wakely  <jwakely@redhat.com>
 243
 244         PR libstdc++/81091
 245         PR libstdc++/91947
 246         * configure.ac: Use AC_SYS_LARGEFILE to enable 64-bit file APIs.
 247         * config.h.in: Regenerate:
 248         * configure: Regenerate:
 249         * include/Makefile.am (${host_builddir}/largefile-config.h): New
 250         target to generate config header for filesystem library.
 251         (${host_builddir}/c++config.h): Rename macros for large file support.
 252         * include/Makefile.in: Regenerate.
 253         * src/c++17/fs_dir.cc: Include new config header.
 254         * src/c++17/fs_ops.cc: Likewise.
 255         (filesystem::file_size): Use uintmax_t for size.
 256         * src/filesystem/dir.cc: Include new config header.
 257         * src/filesystem/ops.cc: Likewise.
 258         (experimental::filesystem::file_size): Use uintmax_t for size.
 259
 260         * testsuite/util/testsuite_abi.h: Use std::unordered_map instead of
 261         std::tr1::unordered_map.
 262         * testsuite/util/testsuite_allocator.h: Likewise.
 263
 264         * include/tr1/hashtable.h: Add header for __gnu_cxx::__alloc_traits.
 265
 266         * include/tr1/hashtable.h (tr1::_Hashtable::_M_allocate_node): Use
 267         __gnu_cxx::__alloc_traits for allocator construct function.
 268         (tr1::_Hashtable::_M_deallocate_node): Likewise for destroy function.
 269
 270         * include/precompiled/stdc++.h: Include <span> for C++20.
 271         * testsuite/17_intro/names.cc: Do not define 'e' for C++20.
 272
 273 2019-10-03  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 274
 275         * include/parallel/multiway_merge.h (_RAIter3): Replace _C by _Cp.
 276
 277 2019-10-02  Jonathan Wakely  <jwakely@redhat.com>
 278
 279         * config/abi/pre/gnu.ver: Tighten up greedy wildcards.
 280
 281         * doc/xml/manual/parallel_mode.xml: Add caveat about support for
 282         recent standards.
 283         * doc/html/*: Regenerate.
 284
 285 2019-10-01  Jonathan Wakely  <jwakely@redhat.com>
 286
 287         * include/experimental/algorithm (experimental::sample): Qualify call
 288         to __sample correctly.
 289         * include/parallel/algo.h (sample, for_each_n): Add using-declarations
 290         for algorithms that don't have parallel implementations.
 291
 292         * include/parallel/algobase.h (equal, lexicographical_compare): Add
 293         _GLIBCXX20_CONSTEXPR and dispatch to sequential algorithm when being
 294         constant evaluated.
 295         * include/parallel/algorithmfwd.h (equal, lexicographical_compare):
 296         Add _GLIBCXX20_CONSTEXPR.
 297
 298         * testsuite/17_intro/using_namespace_std_tr1_neg.cc: Skip test for
 299         parallel mode.
 300         * testsuite/20_util/hash/84998.cc: Likewise.
 301         * testsuite/23_containers/deque/types/pmr_typedefs_debug.cc: Likewise.
 302         * testsuite/23_containers/forward_list/pmr_typedefs_debug.cc: Likewise.
 303         * testsuite/23_containers/list/pmr_typedefs_debug.cc: Likewise.
 304         * testsuite/23_containers/map/pmr_typedefs_debug.cc: Likewise.
 305         * testsuite/23_containers/multimap/pmr_typedefs_debug.cc: Likewise.
 306         * testsuite/23_containers/multiset/pmr_typedefs_debug.cc: Likewise.
 307         * testsuite/23_containers/set/pmr_typedefs_debug.cc: Likewise.
 308         * testsuite/23_containers/unordered_map/pmr_typedefs_debug.cc:
 309         Likewise.
 310         * testsuite/23_containers/unordered_multimap/pmr_typedefs_debug.cc:
 311         Likewise.
 312         * testsuite/23_containers/unordered_multiset/pmr_typedefs_debug.cc:
 313         Likewise.
 314         * testsuite/23_containers/unordered_set/pmr_typedefs_debug.cc:
 315         Likewise.
 316         * testsuite/23_containers/vector/cons/destructible_debug_neg.cc:
 317         Likewise.
 318         * testsuite/23_containers/vector/types/pmr_typedefs_debug.cc: Likewise.
 319         * testsuite/25_algorithms/binary_search/partitioned.cc: Likewise.
 320         * testsuite/25_algorithms/copy/86658.cc: Likewise.
 321         * testsuite/25_algorithms/equal_range/partitioned.cc: Likewise.
 322         * testsuite/25_algorithms/lexicographical_compare/71545.cc: Likewise.
 323         * testsuite/25_algorithms/lower_bound/partitioned.cc: Likewise.
 324         * testsuite/25_algorithms/upper_bound/partitioned.cc: Likewise.
 325
 326         * include/parallel/algo.h: Replace non-reserved names.
 327         * include/parallel/multiway_merge.h: Likewise.
 328         * include/parallel/multiway_mergesort.h: Likewise.
 329         * include/parallel/numericfwd.h: Likewise.
 330         * testsuite/17_intro/names.cc: Add RAI to test macros.
 331
 332 2019-09-30  François Dumont  <fdumont@gcc.gnu.org>
 333
 334         * include/debug/array: Add C++20 constexpr to comparison operators.
 335         * testsuite/23_containers/array/tuple_interface/get_debug_neg.cc: Adapt
 336         dg-error line numbers.
 337         * testsuite/23_containers/array/tuple_interface/
 338         tuple_element_debug_neg.cc: Likewise.
 339
 340 2019-09-30  Andreas Tobler  <andreast@gcc.gnu.org>
 341
 342         * include/experimental/internet: Include netinet/in.h if we have
 343         _GLIBCXX_HAVE_NETINET_IN_H defined.
 344
 345         * testsuite/ext/special_functions/airy_ai/check_nan.cc: Ignore the
 346         FreeBSD warning about lower advertised precision of tgammal.
 347         * testsuite/ext/special_functions/airy_bi/check_nan.cc: Likewise.
 348         * testsuite/special_functions/07_cyl_bessel_i/check_nan.cc: Likewise.
 349         * testsuite/special_functions/08_cyl_bessel_j/check_nan.cc: Likewise.
 350         * testsuite/special_functions/09_cyl_bessel_k/check_nan.cc: Likewise.
 351         * testsuite/special_functions/10_cyl_neumann/check_nan.cc: Likewise.
 352         * testsuite/special_functions/19_sph_bessel/check_nan.cc: Likewise.
 353         * testsuite/special_functions/21_sph_neumann/check_nan.cc: Likewise.
 354         * testsuite/tr1/5_numerical_facilities/special_functions/
 355         08_cyl_bessel_i/check_nan.cc: Likewise.
 356         * testsuite/tr1/5_numerical_facilities/special_functions/
 357         09_cyl_bessel_j/check_nan.cc: Likewise.
 358         * testuite/tr1/5_numerical_facilities/special_functions/
 359         10_cyl_bessel_k/check_nan.cc: Likewise.
 360         * testsuite/tr1/5_numerical_facilities/special_functions/
 361         11_cyl_neumann/check_nan.cc: Likewise.
 362         * testsuite/tr1/5_numerical_facilities/special_functions/
 363         21_sph_bessel/check_nan.cc: Likewise.
 364         * testsuite/tr1/5_numerical_facilities/special_functions/
 365         23_sph_neumann/check_nan.cc: Likewise.
 366
 367 2019-09-30  Jonathan Wakely  <jwakely@redhat.com>
 368
 369         * include/std/span (span(element_type(&)[N]))
 370         (span(array<value_type, N>&), span(const array<value_type, N>&)):
 371         Deduce array element type to allow safe const conversions (LWG 3255).
 372         [!_GLIBCXX_P1394] (span(Container&), span(const Container&)): Use
 373         remove_cv_t on arguments to __is_std_span and __is_std_array.
 374         * testsuite/23_containers/span/lwg3255.cc: New test.
 375
 376         PR libstdc++/77936
 377         * include/parallel/checkers.h (__is_sorted): Remove unused variable.
 378
 379 2019-09-28  François Dumont  <fdumont@gcc.gnu.org>
 380
 381         * include/bits/stl_algo.h (merge): Fix documentation.
 382         * include/debug/functions.h (__check_sorted_aux): Add C++20 constexpr.
 383         (__check_sorted): Likewise and remove nested irreflexive check.
 384         (__check_sorted_set_aux, __check_sorted_set): Add C++20 constexpr.
 385         (__check_partitioned_lower, __check_partitioned_upper): Likewise.
 386         (_Irreflexive_checker::_S_is_valid): Likewise.
 387         (__is_irreflexive, __is_irreflexive_pred): Likewise.
 388         * include/debug/helper_functions.h (__get_distance): Add constexpr.
 389         (__valid_range_aux): Add C++20 constexpr.
 390         (__valid_range(_Iter, _Iter, _Distance_traits<_Iter>::__type&)):
 391         Likewise and add std::is_constant_evaluated check.
 392         (__valid_range_aux(_Iter, _Iter, std::input_iterator_tag)): New.
 393         (__valid_range_aux(_Iter, _Iter, std::random_accss_iterator_tag)): New.
 394         (__valid_range_aux(_Integral, _Integral, std::__true_type)): New,
 395         use latter.
 396         (__valid_range(_Iter, _Iter)): Adapt to use latter, add constexpr and
 397         __builtin_is_contant_evaludated check..
 398         (__can_advance, __base): Add constexpr.
 399         * include/debug/macros.h [_GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED]
 400         (_GLIBCXX_DEBUG_VERIFY_COND_AT): New.
 401         (__glibcxx_check_sorted): Use __glibcxx_check_irreflexive.
 402         (__glibcxx_check_sorted_pred): Use __glibcxx_check_irreflexive_pred.
 403         * testsuite/25_algorithms/binary_search/constexpr.cc: Use irreflexive
 404         std::less.
 405         * testsuite/25_algorithms/is_sorted/constexpr.cc: Likewise.
 406         * testsuite/25_algorithms/merge/constexpr.cc: Fix order in camm. Fix
 407         lambda to be irreflexive.
 408
 409 2019-09-27  Maciej W. Rozycki  <macro@wdc.com>
 410
 411         * configure: Regenerate.
 412
 413 2019-09-27  Jonathan Wakely  <jwakely@redhat.com>
 414
 415         PR libstdc++/91910
 416         * src/c++11/debug.cc (_Safe_iterator_base::_M_detach()): Load pointer
 417         atomically and lock the mutex before accessing the sequence.
 418         (_Safe_local_iterator_base::_M_detach()): Likewise.
 419         (_Safe_iterator_base::_M_reset()): Clear _M_sequence atomically.
 420
 421 2019-09-26  Jonathan Wakely  <jwakely@redhat.com>
 422
 423         * include/debug/array (to_array): Define for debug mode.
 424
 425         * include/bits/stl_pair.h (pair): Add _GLIBCXX20_CONSTEXPR to
 426         piecewise construction constructor, assignment operators, and swap.
 427         * include/std/tuple (pair::pair(piecewise_construct_t, tuple, tuple)):
 428         Add _GLIBCXX20_CONSTEXPR.
 429         (pair::pair(tuple, tuple, _Index_tuple, _Index_tuple)): Likewise.
 430         * testsuite/20_util/pair/constexpr_assign.cc: New test.
 431         * testsuite/20_util/pair/constexpr_swap.cc: New test.
 432
 433         * include/experimental/internet (operator==, operator<): Fix loop
 434         condition to avoid reading past the end of the array.
 435
 436         * include/std/array: Remove references to profile mode.
 437         * include/std/bitset: Likewise.
 438         * include/std/deque: Likewise.
 439         * include/std/forward_list: Likewise.
 440         * include/std/list: Likewise.
 441         * include/std/map: Likewise.
 442         * include/std/set: Likewise.
 443         * include/std/unordered_map: Likewise.
 444         * include/std/unordered_set: Likewise.
 445         * include/std/vector: Likewise.
 446         * testsuite/17_intro/headers/c++1998/profile_mode.cc: New test.
 447         * testsuite/17_intro/headers/c++2011/profile_mode.cc: New test.
 448
 449 2019-09-25  Jonathan Wakely  <jwakely@redhat.com>
 450
 451         * include/bits/regex.h
 452         (basic_regex::assign(const C*, size_t, flag_type)): Add default
 453         argument (LWG 3296).
 454         * testsuite/28_regex/basic_regex/assign/char/lwg3296.cc: New test.
 455         * testsuite/28_regex/basic_regex/assign/wchar_t/lwg3296.cc: New test.
 456
 457 2019-09-24  Jonathan Wakely  <jwakely@redhat.com>
 458
 459         * include/std/variant (variant::index()): Remove impossible case.
 460
 461         PR libstdc++/91871
 462         * testsuite/util/testsuite_hooks.h
 463         (conversion::iterator_to_const_iterator()): Do not return an invalid
 464         iterator. Test direct-initialization and direct-list-initialization
 465         as well as implicit conversion.
 466
 467 2019-09-23  Jonathan Wakely  <jwakely@redhat.com>
 468
 469         PR libstdc++/91788 (partial)
 470         * include/std/variant (variant::index()): Improve codegen for cases
 471         where conversion to size_t already works correctly.
 472
 473 2019-09-23  Andreas Schwab  <schwab@suse.de>
 474
 475         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
 476
 477 2019-09-12  Jonathan Wakely  <jwakely@redhat.com>
 478
 479         PR libstdc++/91748
 480         * include/bits/stl_algo.h (for_each_n): Fix random access iterator
 481         case.
 482         * testsuite/25_algorithms/for_each/for_each_n.cc: Test with random
 483         access iterators.
 484
 485 2019-09-11  Jonathan Wakely  <jwakely@redhat.com>
 486
 487         * python/libstdcxx/v6/xmethods.py (SharedPtrUseCountWorker.__call__):
 488         Fix syntax error.
 489
 490         * testsuite/20_util/result_of/sfinae_friendly_1.cc: Add -Wno-volatile
 491         for C++2a and up. Define HAS_52748_FIXED and fix incorrect tests.
 492         * testsuite/tr1/3_function_objects/result_of.cc: Add -Wno-volatile
 493         for C++2a and up.
 494
 495 2019-09-10  Jonathan Wakely  <jwakely@redhat.com>
 496
 497         * include/std/type_traits (__do_common_type_impl): Implement
 498         additional COND-RES(CREF(D1), CRED(D2)) condition for C++20.
 499         (basic_common_reference, common_reference, common_reference_t): Define
 500         for C++20.
 501         * testsuite/20_util/common_reference/requirements/alias_decl.cc: New
 502         test.
 503         * testsuite/20_util/common_reference/requirements/
 504         explicit_instantiation.cc: New test.
 505         * testsuite/20_util/common_reference/requirements/typedefs.cc: New
 506         test.
 507
 508         * include/std/charconv (to_chars): Rename to __to_chars_i. Define
 509         non-template overloads for each signed and unsigned integer type and
 510         char. Define deleted overload for bool (LWG 3266).
 511         * testsuite/20_util/to_chars/1_neg.cc: Remove.
 512         * testsuite/20_util/to_chars/3.cc: New test.
 513         * testsuite/20_util/to_chars/lwg3266.cc: New test.
 514
 515 2019-09-10  Christophe Lyon  <christophe.lyon@st.com>
 516
 517         * acinclude.m4: Handle uclinux*.
 518         * configure: Regenerate.
 519         * configure.host: Handle uclinux*
 520
 521 2019-09-10  Christophe Lyon  <christophe.lyon@st.com>
 522         Mickaël Guêné <mickael.guene@st.com>
 523
 524         * libsupc++/eh_personality.cc (get_ttype_entry): Add FDPIC
 525         support.
 526
 527 2019-09-10  Jonathan Wakely  <jwakely@redhat.com>
 528
 529         PR libstdc++/91711
 530         * testsuite/23_containers/span/get_neg.cc: Avoid ambiguity due to
 531         0ul being a valid null pointer constant.
 532
 533         * include/std/type_traits (__remove_cv_t): New alias template.
 534         (is_void, is_integral, is_floating_point, is_pointer)
 535         (is_member_object_pointer, is_member_function_pointer, is_null_pointer)
 536         (is_member_point), __is_signed_integer, __is_unsigned_integer)
 537         (__make_unsigned_selector, __make_signed_selector, remove_pointer)
 538         (__decay_selector): Use __remove_cv_t.
 539         (remove_cv): Add partial specializations for cv-qualified types.
 540         (__decay_t): New alias template.
 541         (__decay_and_strip, __common_type_impl, __result_of_impl): Use
 542         __decay_t.
 543         (__enable_if_t): Move earlier in the file.
 544         (_Require): Use __enable_if_t.
 545         (swap(T&, T&)): Use _Require.
 546         (swap(T(&)[N])): Use __enable_if_t.
 547
 548 2019-09-09  Edward Smith-Rowland  <3dw4rd@verizon.net>
 549
 550         Implement C++20 p1424 - 'constexpr' feature macro concerns,
 551         Issue 3256 - Feature testing macro for constexpr algorithms,
 552         and Issue 3257 - Missing feature testing macro update from P0858.
 553         * include/std/version (__cpp_lib_constexpr_algorithms): Bump value.
 554         * include/bits/algorithmfwd.h: Ditto.
 555         * include/std/utility: Ditto.
 556         * testsuite/25_algorithms/constexpr_macro.cc: Ditto.
 557         * testsuite/25_algorithms/cpp_lib_constexpr.cc: New check for
 558         __cpp_lib_constexpr macro in <algorith>.
 559         * testsuite/20_util/exchange/constexpr.cc: Add check for
 560         __cpp_lib_constexpr macro in <utility>.
 561         * testsuite/25_algorithms/adjacent_find/constexpr.cc: Remove check for
 562         __cpp_lib_constexpr_algorithms.
 563         * testsuite/25_algorithms/all_of/constexpr.cc: Ditto.
 564         * testsuite/25_algorithms/any_of/constexpr.cc: Ditto.
 565         * testsuite/25_algorithms/binary_search/constexpr.cc: Ditto.
 566         * testsuite/25_algorithms/copy/constexpr.cc: Ditto.
 567         * testsuite/25_algorithms/copy_backward/constexpr.cc: Ditto.
 568         * testsuite/25_algorithms/copy_if/constexpr.cc: Ditto.
 569         * testsuite/25_algorithms/copy_n/constexpr.cc: Ditto.
 570         * testsuite/25_algorithms/count/constexpr.cc: Ditto.
 571         * testsuite/25_algorithms/count_if/constexpr.cc: Ditto.
 572         * testsuite/25_algorithms/equal/constexpr.cc: Ditto.
 573         * testsuite/25_algorithms/equal_range/constexpr.cc: Ditto.
 574         * testsuite/25_algorithms/fill/constexpr.cc: Ditto.
 575         * testsuite/25_algorithms/fill_n/constexpr.cc: Ditto.
 576         * testsuite/25_algorithms/find/constexpr.cc: Ditto.
 577         * testsuite/25_algorithms/find_end/constexpr.cc: Ditto.
 578         * testsuite/25_algorithms/find_first_of/constexpr.cc: Ditto.
 579         * testsuite/25_algorithms/find_if/constexpr.cc: Ditto.
 580         * testsuite/25_algorithms/find_if_not/constexpr.cc: Ditto.
 581         * testsuite/25_algorithms/for_each/constexpr.cc: Ditto.
 582         * testsuite/25_algorithms/generate/constexpr.cc: Ditto.
 583         * testsuite/25_algorithms/generate_n/constexpr.cc: Ditto.
 584         * testsuite/25_algorithms/is_heap/constexpr.cc: Ditto.
 585         * testsuite/25_algorithms/is_heap_until/constexpr.cc: Ditto.
 586         * testsuite/25_algorithms/is_partitioned/constexpr.cc: Ditto.
 587         * testsuite/25_algorithms/is_permutation/constexpr.cc: Ditto.
 588         * testsuite/25_algorithms/is_sorted/constexpr.cc: Ditto.
 589         * testsuite/25_algorithms/is_sorted_until/constexpr.cc: Ditto.
 590         * testsuite/25_algorithms/lexicographical_compare/constexpr.cc: Ditto.
 591         * testsuite/25_algorithms/lower_bound/constexpr.cc: Ditto.
 592         * testsuite/25_algorithms/merge/constexpr.cc: Ditto.
 593         * testsuite/25_algorithms/mismatch/constexpr.cc: Ditto.
 594         * testsuite/25_algorithms/none_of/constexpr.cc: Ditto.
 595         * testsuite/25_algorithms/partition_copy/constexpr.cc: Ditto.
 596         * testsuite/25_algorithms/partition_point/constexpr.cc: Ditto.
 597         * testsuite/25_algorithms/remove/constexpr.cc: Ditto.
 598         * testsuite/25_algorithms/remove_copy/constexpr.cc: Ditto.
 599         * testsuite/25_algorithms/remove_copy_if/constexpr.cc: Ditto.
 600         * testsuite/25_algorithms/remove_if/constexpr.cc: Ditto.
 601         * testsuite/25_algorithms/replace_copy/constexpr.cc: Ditto.
 602         * testsuite/25_algorithms/replace_copy_if/constexpr.cc: Ditto.
 603         * testsuite/25_algorithms/replace_if/constexpr.cc: Ditto.
 604         * testsuite/25_algorithms/reverse_copy/constexpr.cc: Ditto.
 605         * testsuite/25_algorithms/rotate_copy/constexpr.cc: Ditto.
 606         * testsuite/25_algorithms/search/constexpr.cc: Ditto.
 607         * testsuite/25_algorithms/search_n/constexpr.cc: Ditto.
 608         * testsuite/25_algorithms/set_difference/constexpr.cc: Ditto.
 609         * testsuite/25_algorithms/set_intersection/constexpr.cc: Ditto.
 610         * testsuite/25_algorithms/set_symmetric_difference/constexpr.cc: Ditto.
 611         * testsuite/25_algorithms/set_union/constexpr.cc: Ditto.
 612         * testsuite/25_algorithms/transform/constexpr.cc: Ditto.
 613         * testsuite/25_algorithms/unique/constexpr.cc: Ditto.
 614         * testsuite/25_algorithms/unique_copy/constexpr.cc: Ditto.
 615         * testsuite/25_algorithms/upper_bound/constexpr.cc: Ditto.
 616
 617 2019-09-09  Edward Smith-Rowland  <3dw4rd@verizon.net>
 618
 619         Update docs for recent <span> and constexpr lib changes.
 620         * doc/xml/manual/status_cxx2020.xml: Update p0202r3, p0858r0, p0879r0,
 621         p1023r0, p1085r2 status.
 622         * doc/html/manual/status.html: Regenerate.
 623
 624 2019-09-09  Antony Polukhin  <antoshkka@gmail.com>
 625
 626         * include/bits/charconv.h (__detail::__to_chars_10_impl): Replace
 627         final offsets with constants.
 628
 629 2019-09-09  Jonathan Wakely  <jwakely@redhat.com>
 630
 631         * include/bits/range_access.h (__adl_to_address): Remove.
 632         * include/std/span (__is_base_derived_safe_convertible_v): Replace
 633         with span::__is_compatible.
 634         (__is_std_array_v): Replace with __is_std_array class template and
 635         partial specializations.
 636         (__is_std_array, __is_std_span): New class templates and partial
 637         specializations.
 638         (span::__is_compatible): New alias template for SFINAE constraints.
 639         (span::span(element_type (&)[N])): Remove redundant constraints. Do
 640         not use __adl_data to obtain a pointer.
 641         (span::span(array<value_type, N>&)): Likewise.
 642         (span::span(const array<value_type, N>&)): Likewise.
 643         [_GLIBCXX_P1394] (span::iter_reference_t, span::iterator_t)
 644         (span::iter_value_t, span::derived_from): New alias templates for
 645         SFINAE constraints, until the equivalents are supported in <concepts>
 646         and <iterator>.
 647         [_GLIBCXX_P1394] (span::__is_compatible_iterator): New alias template
 648         for SFINAE constraints.
 649         [_GLIBCXX_P1394] (span::is_compatible_range): New class template for
 650         SFINAE constraints.
 651         [_GLIBCXX_P1394] (span::span(Range&&)): Improve constraints.
 652         [_GLIBCXX_P1394] (span::span(ContiguousIterator, Sentinel)): Likewise.
 653         Use std::to_address instead of __adl_to_address.
 654         [_GLIBCXX_P1394] (span::span(ContiguousIterator, size_type)): Likewise.
 655         [!_GLIBCXX_P1394] (span::__is_compatible_container): New alias
 656         template for SFINAE constraints.
 657         [!_GLIBCXX_P1394] (span::span(Container&))
 658         (span::span(const Container&)): Improve constraints.
 659         [!_GLIBCXX_P1394] (span::span(pointer, size_type))
 660         (span::span(pointer, pointer)): Remove redundant cast of pointer.
 661         (span(const span<OType, OExtent>&)): New constructor.
 662
 663 2019-09-06  Jonathan Wakely  <jwakely@redhat.com>
 664
 665         * include/bits/range_access.h (ssize): Define for C++20.
 666         * testsuite/24_iterators/range_access_cpp20.cc: New test.
 667         * doc/xml/manual/status_cxx2020.xml: Update P1227R2 status.
 668         * doc/html/*: Regenerate.
 669
 670 2019-09-06  Florian Weimer  <fweimer@redhat.com>
 671
 672         * configure: Regenerate.
 673
 674 2019-09-05  Jonathan Wakely  <jwakely@redhat.com>
 675
 676         * doc/xml/manual/status_cxx2020.xml: Update status for P0122R7 and
 677         P1024R3. Remove entry for P0920R2.
 678         * include/std/span  (__cpp_lib_span): Change value.
 679         (__extent_storage, __extent_storage<dynamic_extent>): Remove default
 680         constructor.
 681         (span): Replace __extent_storage base class with data member.
 682         (span::_S_subspan_extent): New function.
 683         (span::empty()): Add nodiscard attribute.
 684         (span::front, span::back, span::operator[]): Check preconditions.
 685         (span::first, span::last, span::subspan): Add noexcept. Improve
 686         precondition checks (LWG 3103).
 687         (get): Remove redundant condition from static_assert.
 688         (tuple_element<I, span<T, E>>): Fix static_assert message and simplify.
 689         (as_writable_bytes): Add inline specifier.
 690         * include/std/version (__cpp_lib_span): Change value.
 691         * testsuite/23_containers/span/back_neg.cc: Remove stray semi-colon.
 692         * testsuite/23_containers/span/front_neg.cc: Likewise.
 693         * testsuite/23_containers/span/index_op_neg.cc: Likewise.
 694         * testsuite/23_containers/span/last_neg.cc: Improve test.
 695         * testsuite/23_containers/span/subspan_neg.cc: Likewise.
 696         * testsuite/23_containers/span/1.cc: New test.
 697         * testsuite/23_containers/span/2.cc: New test.
 698         * testsuite/23_containers/span/back_assert_neg.cc: New test.
 699         * testsuite/23_containers/span/first_2_assert_neg.cc: New test.
 700         * testsuite/23_containers/span/first_assert_neg.cc: New test.
 701         * testsuite/23_containers/span/first_neg.cc: New test.
 702         * testsuite/23_containers/span/front_assert_neg.cc: New test.
 703         * testsuite/23_containers/span/index_op_assert_neg.cc: New test.
 704         * testsuite/23_containers/span/last_2_assert_neg.cc: New test.
 705         * testsuite/23_containers/span/last_assert_neg.cc: New test.
 706         * testsuite/23_containers/span/subspan_2_assert_neg.cc: New test.
 707         * testsuite/23_containers/span/subspan_3_assert_neg.cc: New test.
 708         * testsuite/23_containers/span/subspan_4_assert_neg.cc: New test.
 709         * testsuite/23_containers/span/subspan_5_assert_neg.cc: New test.
 710         * testsuite/23_containers/span/subspan_6_assert_neg.cc: New test.
 711         * testsuite/23_containers/span/subspan_assert_neg.cc: New test.
 712
 713 2019-09-05  JeanHeyd Meneide  <phdofthehouse@gmail.com>
 714
 715         * include/Makefile.am: Add <span> header.
 716         * include/Makefile.in: Regenerate.
 717         * include/bits/range_access.h (__adl_begin, __adl_end, __adl_cbegin)
 718         (__adl_cend, __adl_rbegin, __adl_rend, __adl_crbegin, __adl_crend)
 719         (__adl_data, __adl_cdata, __adl_size, __adl_empty, __adl_to_address):
 720         New functions for performing argument-dependent lookup of range
 721         customization points.
 722         * include/bits/stl_iterator.h (__normal_iterator): Add
 723         _GLIBCXX20_CONSTEXPR to all functions.
 724         * include/std/span: New header.
 725         * include/std/version (__cpp_lib_span): Define feature test macro.
 726         * testsuite/23_containers/span/contiguous_range_neg.cc: New test.
 727         * testsuite/23_containers/span/everything.cc: New test.
 728         * testsuite/23_containers/span/get_neg.cc: New test.
 729         * testsuite/23_containers/span/last_neg.cc: New test.
 730         * testsuite/23_containers/span/subspan_neg.cc: New test.
 731         * testsuite/23_containers/span/tuple_element_dynamic_neg.cc: New test.
 732         * testsuite/23_containers/span/tuple_element_oob_neg.cc: New test.
 733         * testsuite/23_containers/span/tuple_size_neg.cc: New test.
 734
 735 2019-09-05  Jonathan Wakely  <jwakely@redhat.com>
 736
 737         * doc/xml/manual/allocator.xml: Remove URL for bibliography entry.
 738         * doc/html/*: Regenerate.
 739
 740 2019-09-04  Mike Crowe  <mac@mcrowe.com>
 741
 742         PR libstdc++/41861
 743         * acinclude.m4 (GLIBCXX_CHECK_PTHREAD_COND_CLOCKWAIT): Check for new
 744         pthread_cond_clockwait function.
 745         * configure.ac: Use GLIBCXX_CHECK_PTHREAD_COND_CLOCKWAIT.
 746         * configure: Regenerate.
 747         * config.h.in: Regenerate.
 748         * include/std/condition_variable: (condition_variable): Rename
 749         __steady_clock_t typedef and add system_clock. Change __clock_t to be
 750         a typedef for the preferred clock to convert arbitrary other clocks to.
 751         [_GLIBCXX_USE_PTHREAD_COND_CLOCKWAIT] (wait_until): Add a steady_clock
 752         overload.
 753         (wait_until): Change __clock_t overload to use system_clock.
 754         [_GLIBCXX_USE_PTHREAD_COND_CLOCKWAIT] (__wait_until_impl): Add
 755         steady_clock overload that calls pthread_cond_clockwait.
 756         (__wait_until_impl): Change __clock_t overload to use system_clock.
 757         (condition_variable_any) [_GLIBCXX_USE_PTHREAD_COND_CLOCKWAIT]: Use
 758         steady_clock for __clock_t if pthread_cond_clockwait is available.
 759
 760 2019-09-04  Mike Crowe  <mac@mcrowe.com>
 761
 762         * testsuite/30_threads/condition_variable/members/2.cc (test01):
 763         Parameterise so that test can be run against an arbitrary clock.
 764         (main): Test using std::chrono::steady_clock and a user-defined
 765         clock in addition to the previous std::chrono::system_clock.
 766         * testsuite/30_threads/condition_variable_any/members/2.cc: Likewise.
 767
 768 2019-09-03  Ulrich Weigand  <uweigand@de.ibm.com>
 769
 770         * crossconfig.m4: Remove references to spu.
 771         * configure: Regenerate.
 772         * doc/xml/manual/appendix_contributing.xml: Remove references
 773         to __ea as "badword" for spu.
 774         * doc/html/manual/source_code_style.html: Regenerate.
 775         * include/tr1/ell_integral.tcc (__ellint_rd): Do not attempt
 776         to avoid __ea (as "badword" for spu).
 777         (__ellint_rj): Likewise.
 778
 779 2019-09-03  Chung-Lin Tang  <cltang@codesourcery.com>
 780
 781         PR other/79543
 782         * acinclude.m4 (GLIBCXX_CHECK_LINKER_FEATURES): Fix GNU ld --version
 783         scanning to conform to the GNU Coding Standards.
 784         * configure: Regenerate.
 785
 786 2019-09-02  Jonathan Wakely  <jwakely@redhat.com>
 787
 788         * src/c++17/memory_resource.cc: Use __constinit keyword.
 789
 790 2019-09-02  Jonathan Wakely  <jwakely@redhat.com>
 791
 792         * doc/xml/manual/abi.xml: Document 9.x library versions.
 793         * doc/html/*: Regenerate.
 794
 795 2019-09-02  Jonathan Wakely  <jwakely@redhat.com>
 796
 797         * include/std/charconv (__detail::__to_chars_2_len): Use std::log2p1.
 798         (__detail::__to_chars_8_len): Remove.
 799         (__detail::__to_chars_8): Inline length calculation here.
 800         (__detail::__from_chars_binary): Use numeric_limits instead of
 801         CHAR_BIT.
 802
 803 2019-09-02  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 804
 805         * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
 806         * config/abi/post/i386-solaris/amd64/baseline_symbols.txt: Likewise.
 807         * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
 808         * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
 809         Likewise.
 810
 811 2019-09-01  François Dumont  <fdumont@gcc.gnu.org>
 812
 813         * testsuite_files/util/testsuite_performance.h
 814         (resource_counter::start): Ignore unused malloc(0) result.
 815
 816 2019-09-01  Gerald Pfeifer  <gerald@pfeifer.com>
 817
 818         * doc/xml/manual/policy_data_structures_biblio.xml (COM: Component
 819         Model Object Technologies): Adjust name and link.
 820
 821 2019-08-30  Antony Polukhin  <antoshkka@gmail.com>
 822
 823         * include/std/charconv (__detail::__to_chars_8)
 824         __detail::__to_chars_16): Replace array of precomputed digits with
 825         arithmetic operations to avoid CPU cache misses. Remove zero
 826         termination from array of digits to allow symbol merge with generic
 827         implementation of __detail::__to_chars. Replace final offsets with
 828         constants. Use __detail::__to_chars_len_2 instead of a generic
 829         __detail::__to_chars_len.
 830         (__detail::__to_chars): Remove zero termination from array of digits.
 831         (__detail::__to_chars_2): Leading digit is always '1'.
 832
 833 2019-08-30  Jonathan Wakely  <jwakely@redhat.com>
 834
 835         * testsuite/23_containers/vector/cons/89164_c++17.cc: Fix errors.
 836
 837 2019-08-30  Uros Bizjak  <ubizjak@gmail.com>
 838
 839         * config/abi/post/alpha-linux-gnu/baseline_symbols.txt: Update.
 840
 841 2019-08-30  Jonathan Wakely  <jwakely@redhat.com>
 842
 843         PR libstdc++/89164
 844         * include/bits/stl_algobase.h (__copy_move): Give descriptive names
 845         to template parameters.
 846         * include/bits/stl_uninitialized.h (uninitialized_copy)
 847         (uninitialized_fill, uninitialized_fill_n): Add static assertions to
 848         diagnose invalid uses.
 849         * testsuite/20_util/specialized_algorithms/uninitialized_copy/1.cc:
 850         Adjust expected error.
 851         * testsuite/20_util/specialized_algorithms/uninitialized_copy/89164.cc:
 852         New test.
 853         * testsuite/20_util/specialized_algorithms/uninitialized_copy_n/
 854         89164.cc: New test.
 855         * testsuite/20_util/specialized_algorithms/uninitialized_fill/89164.cc:
 856         New test.
 857         * testsuite/20_util/specialized_algorithms/uninitialized_fill_n/
 858         89164.cc: New test.
 859         * testsuite/23_containers/vector/cons/89164.cc: New test.
 860         * testsuite/23_containers/vector/cons/89164_c++17.cc: New test.
 861
 862 2019-08-29  Jonathan Wakely  <jwakely@redhat.com>
 863
 864         PR libstdc++/91067
 865         * acinclude.m4 (libtool_VERSION): Bump to 6:28:0.
 866         * configure: Regenerate.
 867         * config/abi/pre/gnu.ver (GLIBCXX_3.4.28): Add new version. Export
 868         missing symbols.
 869         * testsuite/27_io/filesystem/iterators/91067.cc: Test move
 870         constructors.
 871         * testsuite/util/testsuite_abi.cc: Add new symbol version.
 872
 873 2019-08-29  Jakub Jelinek  <jakub@redhat.com>
 874
 875         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
 876         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
 877
 878 2019-08-28  Jonathan Wakely  <jwakely@redhat.com>
 879
 880         * config/abi/post/i386-linux-gnu/baseline_symbols.txt: Update.
 881         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
 882         * config/abi/post/powerpc-linux-gnu/baseline_symbols.txt: Update.
 883         * config/abi/post/powerpc64-linux-gnu/32/baseline_symbols.txt: Update.
 884         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
 885         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
 886         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
 887
 888 2019-08-23  Joseph Myers  <joseph@codesourcery.com>
 889
 890         * src/filesystem/ops-common.h [_GLIBCXX_FILESYSTEM_IS_WINDOWS]
 891         (std::filesystem::__gnu_posix::lstat): Add return type.
 892
 893 2019-08-20  Jonathan Wakely  <jwakely@redhat.com>
 894
 895         * doc/doxygen/user.cfg.in (INPUT): Remove profile mode headers.
 896
 897         * include/std/numeric (reduce): Fix Doxygen markup.
 898
 899         PR libstdc++/91371
 900         * include/std/type_traits (is_function): Simplify definition. Remove
 901         partial specializations for function types.
 902         (__is_referenceable): Simplify definition.
 903         * testsuite/20_util/bind/91371.cc: New test.
 904         * testsuite/20_util/is_function/91371.cc: New test.
 905         * testsuite/20_util/is_function/value.cc: Check more pointer types.
 906         * testsuite/20_util/is_member_function_pointer/91371.cc: New test.
 907         * testsuite/20_util/is_object/91371.cc: New test.
 908
 909 2019-08-16  Uros Bizjak  <ubizjak@gmail.com>
 910
 911         * config/abi/post/alpha-linux-gnu/baseline_symbols.txt: Update.
 912
 913 2019-08-15  Jonathan Wakely  <jwakely@redhat.com>
 914
 915         PR libstdc++/91456
 916         * include/bits/std_function.h (__check_func_return_type): Remove.
 917         (function::_Callable): Use std::__is_invocable_impl instead of
 918         __check_func_return_type.
 919         * include/std/type_traits (__is_invocable_impl): Add another defaulted
 920         template parameter. Define a separate partial specialization for
 921         INVOKE and INVOKE<void>. For INVOKE<R> replace is_convertible check
 922         with a check that models delayed temporary materialization.
 923         * testsuite/20_util/function/91456.cc: New test.
 924         * testsuite/20_util/is_invocable/91456.cc: New test.
 925
 926 2019-08-14  Jonathan Wakely  <jwakely@redhat.com>
 927
 928         * include/std/type_traits (__is_nullptr_t): Add deprecated attribute.
 929
 930 2019-08-14  Edward Smith-Rowland  <3dw4rd@verizon.net>
 931
 932         Implement C++20 p0879 - Constexpr for swap and swap related functions.
 933         * include/std/version (__cpp_lib_constexpr_swap_algorithms): New macro.
 934         * include/bits/algorithmfwd.h (__cpp_lib_constexpr_swap_algorithms):
 935         New macro.
 936         (iter_swap, make_heap, next_permutation, partial_sort_copy, pop_heap)
 937         (prev_permutation, push_heap, reverse, rotate, sort_heap, swap)
 938         (swap_ranges, nth_element, partial_sort, sort): Add constexpr.
 939         * include/bits/move.h (swap): Add constexpr.
 940         * include/bits/stl_algo.h (__move_median_to_first, __reverse, reverse)
 941         (__gcd, __rotate, rotate, __partition, __heap_select)
 942         (__partial_sort_copy, partial_sort_copy, __unguarded_partition)
 943         (__unguarded_partition_pivot, __partial_sort, __introsort_loop, __sort)
 944         (__introselect, __chunk_insertion_sort, next_permutation)
 945         (prev_permutation, partition, partial_sort, nth_element, sort)
 946         (__iter_swap::iter_swap, iter_swap, swap_ranges): Add constexpr.
 947         * include/bits/stl_algobase.h (__iter_swap::iter_swap, iter_swap)
 948         (swap_ranges): Add constexpr.
 949         * include/bits/stl_heap.h (__push_heap, push_heap, __adjust_heap,
 950         __pop_heap, pop_heap, __make_heap, make_heap, __sort_heap, sort_heap):
 951         Add constexpr.
 952         * include/std/type_traits (swap): Add constexpr.
 953         * testsuite/25_algorithms/headers/algorithm/synopsis.cc: Add constexpr.
 954         * testsuite/25_algorithms/iter_swap/constexpr.cc: New test.
 955         * testsuite/25_algorithms/make_heap/constexpr.cc: New test.
 956         * testsuite/25_algorithms/next_permutation/constexpr.cc: New test.
 957         * testsuite/25_algorithms/nth_element/constexpr.cc: New test.
 958         * testsuite/25_algorithms/partial_sort/constexpr.cc: New test.
 959         * testsuite/25_algorithms/partial_sort_copy/constexpr.cc: New test.
 960         * testsuite/25_algorithms/partition/constexpr.cc: New test.
 961         * testsuite/25_algorithms/pop_heap/constexpr.cc: New test.
 962         * testsuite/25_algorithms/prev_permutation/constexpr.cc: New test.
 963         * testsuite/25_algorithms/push_heap/constexpr.cc: New test.
 964         * testsuite/25_algorithms/reverse/constexpr.cc: New test.
 965         * testsuite/25_algorithms/rotate/constexpr.cc: New test.
 966         * testsuite/25_algorithms/sort/constexpr.cc: New test.
 967         * testsuite/25_algorithms/sort_heap/constexpr.cc: New test.
 968         * testsuite/25_algorithms/swap/constexpr.cc: New test.
 969         * testsuite/25_algorithms/swap_ranges/constexpr.cc: New test.
 970
 971 2019-08-12  Jonathan Wakely  <jwakely@redhat.com>
 972
 973         PR libstdc++/90361
 974         * src/c++17/string-inst.cc: Use _GLIBCXX_USE_CXX11_ABI=1 by default.
 975
 976         * include/std/tuple (__unpack_std_tuple): New variable template and
 977         partial specializations.
 978         (apply, make_from_tuple): Add noexcept-specifier.
 979         * testsuite/20_util/tuple/apply/2.cc: New test.
 980         * testsuite/20_util/tuple/make_from_tuple/2.cc: New test.
 981
 982 2019-08-09  Corentin Gay  <gay@adacore.com>
 983
 984         * testsuite/ext/random/beta_distribution/operators/serialize.cc,
 985         testsuite/ext/random/hypergeometric_distribution/operators/serialize.cc,
 986         testsuite/ext/random/normal_mv_distribution/operators/serialize.cc,
 987         testsuite/ext/random/triangular_distribution/operators/serialize.cc,
 988         testsuite/ext/random/von_mises_distribution/operators/serialize.cc:
 989         Add call to `VERIFY`.
 990
 991 2019-08-09  Alexandre Oliva <oliva@adacore.com>
 992
 993         * include/ext/random
 994         (normal_mv_distribution::param_type::param_type): New private
 995         ctor taking a decomposed varcov matrix, for use by...
 996         (operator>>): ... this, befriended.
 997         * include/ext/random.tcc (operator>>): Use it.
 998         (normal_mv_distribution::param_type::_M_init_lower): Adjust
 999         member function name in exception message.
1000
1001 2019-08-08  Jonathan Wakely  <jwakely@redhat.com>
1002
1003         P0325R4 to_array from LFTS with updates
1004         * include/experimental/array (to_array): Qualify call to __to_array.
1005         * include/std/array (__cpp_lib_to_array, to_array): Define for C++20.
1006         * include/std/version (__cpp_lib_to_array): Likewise.
1007         * testsuite/23_containers/array/creation/1.cc: New test.
1008         * testsuite/23_containers/array/creation/2.cc: New test.
1009         * testsuite/23_containers/array/creation/3_neg.cc: New test.
1010         * testsuite/23_containers/array/tuple_interface/tuple_element_neg.cc:
1011         Use zero for dg-error line number.
1012
1013 2019-08-06  Jonathan Wakely  <jwakely@redhat.com>
1014
1015         P1651R0 bind_front should not unwrap reference_wrapper
1016         * include/std/functional (bind_front): Don't unwrap reference_wrapper.
1017         * include/std/version (__cpp_lib_bind_front): Update value.
1018         * testsuite/20_util/function_objects/bind_front/1.cc: Fix test for
1019         feature test macro.
1020         * testsuite/20_util/function_objects/bind_front/2.cc: New test.
1021
1022         * include/std/numbers [!__STRICT_ANSI__ && _GLIBCXX_USE_FLOAT128]
1023         (e_v, log2e_v, log10e_v, pi_v, inv_pi_v, inv_sqrtpi_v, ln2_v, ln10_v)
1024         (sqrt2_v, sqrt3_v, inv_sqrt3, egamma_v, phi_v): Add explicit
1025         specializations for __float128.
1026         * testsuite/26_numerics/numbers/float128.cc: New test.
1027
1028 2019-08-04  Gerald Pfeifer  <gerald@pfeifer.com>
1029
1030         * doc/xml/manual/documentation_hacking.xml: doxygen.org is now
1031         doxygen.nl.
1032
1033 2019-08-01  Edward Smith-Rowland  <3dw4rd@verizon.net>
1034
1035         Implement C++20 p0202 - Add Constexpr Modifiers to Functions
1036         in <algorithm> and <utility> Headers.
1037         Implement C++20 p1023 - constexpr comparison operators for std::array.
1038         * include/bits/algorithmfwd.h (all_of, any_of, binary_search, copy,
1039         copy_backward, copy_if, copy_n, equal_range, fill, find_end,
1040         find_if_not, includes, is_heap, is_heap_until, is_partitioned,
1041         is_permutation, is_sorted, is_sorted_until, iter_swap, lower_bound,
1042         none_of, partition_copy, partition_point, remove, remove_if,
1043         remove_copy, remove_copy_if, replace_copy, replace_copy_if,
1044         reverse_copy, rotate_copy, uunique, upper_bound, adjacent_find, count,
1045         count_if, equal, find, find_first_of, find_if, for_each, generate,
1046         generate_n, lexicographical_compare, merge, mismatch, replace,
1047         replace_if, search, search_n, set_difference, set_intersection,
1048         set_symmetric_difference, set_union, transform, unique_copy):
1049         Mark constexpr.
1050         * include/bits/cpp_type_traits.h (__miter_base): Mark constexpr.
1051         * include/bits/predefined_ops.h (_Iter_less_val::operator(),
1052         _Val_less_iter::operator(), _Iter_equal_to_iter::operator(),
1053         _Iter_equal_to_val::operator(), _Iter_equals_val::operator()):
1054          Use const ref instead of ref arg;
1055         (_Iter_less_val, __iter_less_val, _Val_less_iter, __val_less_iter,
1056         __iter_equal_to_iter, __iter_equal_to_val, __iter_comp_val,
1057         _Iter_comp_val, _Val_comp_iter, __val_comp_iter, __iter_equals_val,
1058         _Iter_equals_iter, __iter_comp_iter, _Iter_pred, __pred_iter,
1059         _Iter_comp_to_val, __iter_comp_val, _Iter_comp_to_iter,
1060         __iter_comp_iter): Mark constexpr.
1061         * include/bits/stl_algo.h (__find_if, __find_if_not, __find_if_not_n,
1062         __search, __search_n_aux, __search_n, __find_end, find_end, all_of,
1063         none_of, any_of, find_if_not, is_partitioned, partition_point,
1064         __remove_copy_if, remove_copy, remove_copy_if, copy_if, __copy_n,
1065         copy_n, partition_copy, __remove_if, remove, remove_if, __adjacent_find,
1066         __unique, unique, __unique_copy, reverse_copy, rotate_copy,
1067         __unguarded_linear_insert, __insertion_sort, __unguarded_insertion_sort,
1068         __final_insertion_sort, lower_bound, __upper_bound, upper_bound,
1069         __equal_range, equal_range, binary_search, __includes, includes,
1070         __next_permutation, __prev_permutation, __replace_copy_if, replace_copy,
1071         replace_copy_if, __count_if, is_sorted, __is_sorted_until,
1072         is_sorted_until, __is_permutation, is_permutation, for_each, find,
1073         find_if, find_first_of, adjacent_find, count, count_if, search,
1074         search_n, transform, replace, replace_if, generate, generate_n,
1075         unique_copy, __merge, merge, __set_union, set_union, __set_intersection,
1076         set_intersection, __set_difference, set_difference,
1077         __set_symmetric_difference, set_symmetric_difference):  Mark constexpr.
1078         * include/bits/stl_algobase.h (__memmove, __memcmp): New maybe constexpr
1079         wrappers around __builtin_memmove and __builtin_memcmp
1080         respectively;
1081         (__niter_base, __niter_wrap, __copy_m, __copy_move_a, __copy_move_a2,
1082         copy, move, __copy_move_b, __copy_move_backward_a,
1083         __copy_move_backward_a2, copy_backward, move_backward, __fill_a, fill,
1084         __fill_n_a, fill_n, equal, __lc_rai::__newlast1, __lc_rai::__cnd2,
1085         __lexicographical_compare_impl, __lexicographical_compare,
1086         __lexicographical_compare<true>::__lc, __lexicographical_compare_aux,
1087         __lower_bound, lower_bound, equal, __equal4, lexicographical_compare,
1088         __mismatch, mismatch, __is_heap_until, __is_heap, is_heap_until,
1089         is_heap): Mark constexpr.
1090         * include/bits/stl_heap.h (__is_heap_until, __is_heap, is_heap_until,
1091         is_heap): Mark constexpr.
1092         * include/bits/stl_iterator.h (__niter_base, __miter_base): Mark constexpr.
1093         * include/std/array: Make comparison ops constexpr.
1094         * include/std/utility: Make exchange constexpr.
1095         * include/std/version (__cpp_lib_constexpr_algorithms): New macro.
1096         * testsuite/23_containers/array/tuple_interface/get_neg.cc: Adjust.
1097         * testsuite/23_containers/array/tuple_interface/
1098         tuple_element_neg.cc: Adjust.
1099         * testsuite/20_util/exchange/constexpr.cc: New.
1100         * testsuite/23_containers/array/comparison_operators/constexpr.cc: New.
1101         * testsuite/25_algorithms/constexpr_macro.cc: New.
1102         * testsuite/25_algorithms/adjacent_find/constexpr.cc: New.
1103         * testsuite/25_algorithms/all_of/constexpr.cc: New.
1104         * testsuite/25_algorithms/any_of/constexpr.cc: New.
1105         * testsuite/25_algorithms/binary_search/constexpr.cc: New.
1106         * testsuite/25_algorithms/copy/constexpr.cc: New.
1107         * testsuite/25_algorithms/copy_backward/constexpr.cc: New.
1108         * testsuite/25_algorithms/copy_if/constexpr.cc: New.
1109         * testsuite/25_algorithms/copy_n/constexpr.cc: New.
1110         * testsuite/25_algorithms/count/constexpr.cc: New.
1111         * testsuite/25_algorithms/count_if/constexpr.cc: New.
1112         * testsuite/25_algorithms/equal/constexpr.cc: New.
1113         * testsuite/25_algorithms/equal_range/constexpr.cc: New.
1114         * testsuite/25_algorithms/fill/constexpr.cc: New.
1115         * testsuite/25_algorithms/fill_n/constexpr.cc: New.
1116         * testsuite/25_algorithms/find/constexpr.cc: New.
1117         * testsuite/25_algorithms/find_end/constexpr.cc: New.
1118         * testsuite/25_algorithms/find_first_of/constexpr.cc: New.
1119         * testsuite/25_algorithms/find_if/constexpr.cc: New.
1120         * testsuite/25_algorithms/find_if_not/constexpr.cc: New.
1121         * testsuite/25_algorithms/for_each/constexpr.cc: New.
1122         * testsuite/25_algorithms/generate/constexpr.cc: New.
1123         * testsuite/25_algorithms/generate_n/constexpr.cc: New.
1124         * testsuite/25_algorithms/is_heap/constexpr.cc: New.
1125         * testsuite/25_algorithms/is_heap_until/constexpr.cc: New.
1126         * testsuite/25_algorithms/is_partitioned/constexpr.cc: New.
1127         * testsuite/25_algorithms/is_permutation/constexpr.cc: New.
1128         * testsuite/25_algorithms/is_sorted/constexpr.cc: New.
1129         * testsuite/25_algorithms/is_sorted_until/constexpr.cc: New.
1130         * testsuite/25_algorithms/lexicographical_compare/constexpr.cc: New.
1131         * testsuite/25_algorithms/lower_bound/constexpr.cc: New.
1132         * testsuite/25_algorithms/merge/constexpr.cc: New.
1133         * testsuite/25_algorithms/mismatch/constexpr.cc: New.
1134         * testsuite/25_algorithms/none_of/constexpr.cc: New.
1135         * testsuite/25_algorithms/partition_copy/constexpr.cc: New.
1136         * testsuite/25_algorithms/partition_point/constexpr.cc: New.
1137         * testsuite/25_algorithms/remove/constexpr.cc: New.
1138         * testsuite/25_algorithms/remove_copy/constexpr.cc: New.
1139         * testsuite/25_algorithms/remove_copy_if/constexpr.cc: New.
1140         * testsuite/25_algorithms/remove_if/constexpr.cc: New.
1141         * testsuite/25_algorithms/replace_copy/constexpr.cc: New.
1142         * testsuite/25_algorithms/replace_copy_if/constexpr.cc: New.
1143         * testsuite/25_algorithms/replace_if/constexpr.cc: New.
1144         * testsuite/25_algorithms/reverse_copy/constexpr.cc: New.
1145         * testsuite/25_algorithms/rotate_copy/constexpr.cc: New.
1146         * testsuite/25_algorithms/search/constexpr.cc: New.
1147         * testsuite/25_algorithms/search_n/constexpr.cc: New.
1148         * testsuite/25_algorithms/set_difference/constexpr.cc: New.
1149         * testsuite/25_algorithms/set_intersection/constexpr.cc: New.
1150         * testsuite/25_algorithms/set_symmetric_difference/constexpr.cc: New.
1151         * testsuite/25_algorithms/set_union/constexpr.cc: New.
1152         * testsuite/25_algorithms/transform/constexpr.cc: New.
1153         * testsuite/25_algorithms/unique/constexpr.cc: New.
1154         * testsuite/25_algorithms/unique_copy/constexpr.cc: New.
1155         * testsuite/25_algorithms/upper_bound/constexpr.cc: New.
1156
1157 2019-07-31  Jonathan Wakely  <jwakely@redhat.com>
1158
1159         * include/std/memory (make_obj_using_allocator): Qualify call to
1160         uses_allocator_construction_args.
1161
1162         P0631R4 Math Constants
1163         * include/Makefile.am: Add new header.
1164         * include/Makefile.in: Regenerate.
1165         * include/precompiled/stdc++.h: Include new header.
1166         * include/std/numbers: New header.
1167         * include/std/version (__cpp_lib_math_constants): Define.
1168         * testsuite/26_numerics/numbers/1.cc: New test.
1169         * testsuite/26_numerics/numbers/2.cc: New test.
1170         * testsuite/26_numerics/numbers/3.cc: New test.
1171         * testsuite/26_numerics/numbers/nonfloat_neg.cc: New test.
1172
1173         * include/std/bit: Add Doxygen comments.
1174
1175         PR libstdc++/91308
1176         * include/bits/unique_ptr.h (unique_ptr::__safe_conversion_up): Remove
1177         constraints on deleter that should only apply to the constructor.
1178         (unique_ptr<T[], D>::__safe_conversion_up): Likewise.
1179         (unique_ptr<T[], D>::unique_ptr(unique_ptr<U, D>&&)): Restore
1180         constraints on deleter here.
1181         * testsuite/20_util/unique_ptr/assign/91308.cc: New test.
1182
1183 2019-07-29  Jonathan Wakely  <jwakely@redhat.com>
1184
1185         PR libstdc++/51333
1186         * libsupc++/cxxabi.h (__gnu_cxx::recursive_init_error): Do not define
1187         constructor inline.
1188         * libsupc++/guard_error.cc (__gnu_cxx::recursive_init_error): Define
1189         constructor.
1190         * testsuite/18_support/51333.cc: New test.
1191
1192 2019-07-28  Gerald Pfeifer  <gerald@pfeifer.com>
1193
1194         * doc/xml/manual/documentation_hacking.xml: Fix broken reference
1195         to the Doxygen manual. Avoid a "here" link on the way.
1196         Fix another broken link to Doxygen docblocks.
1197
1198 2019-07-26  Jonathan Wakely  <jwakely@redhat.com>
1199
1200         * include/std/bit (__cpp_lib_endian): Define.
1201         * include/std/version (__cpp_lib_endian): Define.
1202         * testsuite/26_numerics/endian/2.cc: New.
1203         * testsuite/26_numerics/endian/3.cc: New.
1204         * testsuite/26_numerics/endian/4.cc: New.
1205
1206 2019-07-26  François Dumont  <fdumont@gcc.gnu.org>
1207
1208         * testsuite/util/testsuite_iterators.h
1209         (bidirectional_iterator_wrapper): Fix type comment.
1210         (random_access_iterator_wrapper): Likewise.
1211
1212 2019-07-25  Jonathan Wakely  <jwakely@redhat.com>
1213
1214         * include/std/bit (endian): Move definition here as per P1612R1.
1215         * include/std/type_traits (endian): Remove definition from here.
1216         * testsuite/20_util/endian/1.cc: Rename to ...
1217         * testsuite/26_numerics/endian/1.cc: ... here. Adjust header.
1218
1219 2019-07-25  Martin Liska  <mliska@suse.cz>
1220             Dominik Infuhr  <dominik.infuehr@theobroma-systems.com>
1221
1222         PR c++/23383
1223         * testsuite/ext/bitmap_allocator/check_delete.cc: Add
1224         -fno-allocation-dce.
1225         * testsuite/ext/bitmap_allocator/check_new.cc: Likewise.
1226         * testsuite/ext/new_allocator/check_delete.cc: Likewise.
1227         * testsuite/ext/new_allocator/check_new.cc: Likewise.
1228
1229 2019-07-22  Jonathan Wakely  <jwakely@redhat.com>
1230
1231         * testsuite/26_numerics/bit/bitops.count/*: Rename to ...
1232         * testsuite/26_numerics/bit/bit.count/*: Here.
1233
1234         * include/std/bit (__rotl, __rotr): Change second parameter from
1235         unsigned int to int and handle negative values.
1236         (rotl, rotr): Remove check for __STRICT_ANSI__. Change second
1237         parameter from unsigned int to int. Add nodiscard attribute.
1238         * testsuite/26_numerics/bit/bitops.rot/rotl.cc: Rename to ...
1239         * testsuite/26_numerics/bit/bit.rotate/rotl.cc: Here. Test negative
1240         shifts.
1241         * testsuite/26_numerics/bit/bitops.rot/rotr.cc: Rename to ...
1242         * testsuite/26_numerics/bit/bit.rotate/rotr.cc: Here. Test negative
1243         shifts.
1244
1245         * include/std/bit (__ceil2): Make unrepresentable results undefined,
1246         as per P1355R2. Add debug assertion. Perform one left shift, not two,
1247         so that out of range values cause undefined behaviour. Ensure that
1248         shift will still be undefined if left operand is promoted.
1249         * testsuite/26_numerics/bit/bit.pow.two/ceil2.cc: Replace checks for
1250         unrepresentable values with checks that they are not core constant
1251         expressions.
1252         * testsuite/26_numerics/bit/bit.pow.two/ceil2_neg.cc: New test.
1253
1254 2019-07-19  François Dumont  <fdumont@gcc.gnu.org>
1255
1256         * include/bits/stl_tempbuf.h (__detail::__return_temporary_buffer): Fix
1257         sized deallocation size computation.
1258
1259 2019-07-19  Andreas Schwab  <schwab@linux-m68k.org>
1260
1261         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
1262
1263 2019-07-18  François Dumont  <fdumont@gcc.gnu.org>
1264
1265         * include/bits/stl_tempbuf.h (__detail::__return_temporary_buffer): New.
1266         (~_Temporary_buffer()): Use latter.
1267         (_Temporary_buffer(_FIterator, size_type)): Likewise.
1268
1269 2019-07-17  Andreas Schwab  <schwab@suse.de>
1270
1271         * config/abi/post/ia64-linux-gnu/baseline_symbols.txt: Update.
1272
1273 2019-07-16  Jason Merrill  <jason@redhat.com>
1274
1275         * include/std/memory (uses_allocator_construction_args): Add parens
1276         around constraint.
1277
1278 2019-07-12  Jonathan Wakely  <jwakely@redhat.com>
1279
1280         * testsuite/29_atomics/atomic_float/1.cc: Fix comment.
1281
1282         * include/experimental/string_view (__detail::__idt): Remove.
1283         (operator==, operator!=, operator<, operator>, operator<=, operator>=):
1284         Use __type_identity_t instead of __detail::__idt;
1285         * include/std/string_view (__detail::__idt): Remove.
1286         (operator==, operator!=, operator<, operator>, operator<=, operator>=):
1287         Use __type_identity_t instead of __detail::__idt;
1288         * include/std/type_traits (__type_identity_t): New alias template.
1289
1290         * doc/xml/manual/status_cxx2020.xml: Update status for atomic_ref
1291         and floating point atomics.
1292
1293 2019-07-11  Jonathan Wakely  <jwakely@redhat.com>
1294
1295         * doc/xml/manual/configure.xml: Improve documentation of
1296         --enable-libstdcxx-time option.
1297
1298         * include/bits/atomic_base.h (__atomic_impl): New namespace for
1299         wrappers around atomic built-ins.
1300         (__atomic_float, __atomic_ref): New class templates for use as base
1301         classes.
1302         * include/std/atomic (atomic<float>, atomic<double>)
1303         (atomic<long double>): New explicit specializations.
1304         (atomic_ref): New class template.
1305         (__cpp_lib_atomic_ref): Define.
1306         * include/std/version (__cpp_lib_atomic_ref): Define.
1307         * testsuite/29_atomics/atomic/60695.cc: Adjust dg-error.
1308         * testsuite/29_atomics/atomic_float/1.cc: New test.
1309         * testsuite/29_atomics/atomic_float/requirements.cc: New test.
1310         * testsuite/29_atomics/atomic_ref/deduction.cc: New test.
1311         * testsuite/29_atomics/atomic_ref/float.cc: New test.
1312         * testsuite/29_atomics/atomic_ref/generic.cc: New test.
1313         * testsuite/29_atomics/atomic_ref/integral.cc: New test.
1314         * testsuite/29_atomics/atomic_ref/pointer.cc: New test.
1315         * testsuite/29_atomics/atomic_ref/requirements.cc: New test.
1316
1317 2019-07-06  Jonathan Wakely  <jwakely@redhat.com>
1318
1319         * include/ext/atomicity.h (__exchange_and_add, __atomic_add): Replace
1320         throw() with _GLIBCXX_NOTHROW.
1321         (__atomic_add_dispatch): Return after performing atomic increment.
1322
1323 2019-07-05  Jonathan Wakely  <jwakely@redhat.com>
1324
1325         * include/ext/atomicity.h [_GLIBCXX_ATOMIC_BUILTINS] (__atomic_add)
1326         (__exchange_and_add): Replace static specifier with always_inline
1327         attribute.
1328         (__exchange_and_add_single, __atomic_add_single): Likewise.
1329         (__exchange_and_add_dispatch, __atomic_add_dispatch): Likewise. Also
1330         combine !__gthread_active_p() and !__GTHREADS branches.
1331
1332 2019-07-03  Jonathan Wakely  <jwakely@redhat.com>
1333
1334         PR libstdc++/91067
1335         * acinclude.m4 (libtool_VERSION): Bump to 6:27:0.
1336         * configure: Regenerate.
1337         * config/abi/pre/gnu.ver (GLIBCXX_3.4.27): Add new version. Export
1338         missing symbols.
1339         * testsuite/27_io/filesystem/iterators/91067.cc: New test.
1340         * testsuite/util/testsuite_abi.cc: Add new symbol version.
1341
1342 2019-07-02  Jonathan Wakely  <jwakely@redhat.com>
1343
1344         * include/bits/c++config (_GLIBCXX_HAVE_BUILTIN_LAUNDER)
1345         (_GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED): Use __has_builtin
1346         instead of __is_identifier to detect Clang support.
1347
1348 2019-07-02  Jim Wilson  <jimw@sifive.com>
1349
1350         * configure.ac (BUILD_PDF): Also test for doxygen, dot, xsltproc,
1351         and xmllint.
1352         * configure: Regenerate.
1353
1354 2019-06-27  Jonathan Wakely  <jwakely@redhat.com>
1355
1356         PR libstdc++/91012
1357         * src/c++17/fs_path.cc (filesystem_error::_Impl): Use a string_view
1358         for the what_arg parameters.
1359         (filesystem_error::filesystem_error): Pass system_error::what() to
1360         the _Impl constructor.
1361         * testsuite/27_io/filesystem/filesystem_error/cons.cc: Ensure that
1362         filesystem_error::what() contains system_error::what().
1363
1364 2019-06-26  Jonathan Wakely  <jwakely@redhat.com>
1365
1366         * include/std/charconv (chars_format): Define bitmask type.
1367         * testsuite/20_util/to_chars/chars_format.cc: New test.
1368
1369         * include/bits/fs_path.h (path::__is_encoded_char): Use __is_one_of.
1370         * include/std/bit (_If_is_unsigned_integer_type): Remove.
1371         (_If_is_unsigned_integer): Use __is_unsigned_integer.
1372         (rotl(byte, unsigned), rotr(byte, unsigned), countl_zero(byte))
1373         (countl_one(byte), countr_zero(byte), countr_one(byte))
1374         (popcount(byte), ispow2(byte), ceil2(byte), floor2(byte))
1375         (log2p1(byte)): Remove.
1376         * include/std/charconv (__detail::__is_one_of): Move to <type_traits>.
1377         (__detail::__is_int_to_chars_type): Remove.
1378         (__detail::__integer_to_chars_result_type): Use __is_signed_integer
1379         and __is_unsigned_integer.
1380         * include/std/type_traits (__is_one_of): Move here from <charconv>.
1381         (__is_signed_integer, __is_unsigned_integer): New helpers.
1382         * testsuite/26_numerics/bit/bit.pow.two/ceil2.cc: Remove test for
1383         std::byte overload.
1384         * testsuite/26_numerics/bit/bit.pow.two/floor2.cc: Likewise.
1385         * testsuite/26_numerics/bit/bit.pow.two/ispow2.cc: Likewise.
1386         * testsuite/26_numerics/bit/bit.pow.two/log2p1.cc: Likewise.
1387         * testsuite/26_numerics/bit/bitops.count/countl_one.cc: Likewise.
1388         * testsuite/26_numerics/bit/bitops.count/countl_zero.cc: Likewise.
1389         * testsuite/26_numerics/bit/bitops.count/countr_one.cc: Likewise.
1390         * testsuite/26_numerics/bit/bitops.count/countr_zero.cc: Likewise.
1391         * testsuite/26_numerics/bit/bitops.count/popcount.cc: Likewise.
1392         * testsuite/26_numerics/bit/bitops.rot/rotl.cc: Likewise.
1393         * testsuite/26_numerics/bit/bitops.rot/rotr.cc: Likewise.
1394
1395 2019-06-25  Jonathan Wakely  <jwakely@redhat.com>
1396
1397         * include/std/numeric (midpoint(T, T)): Avoid std::abs in constexpr
1398         function.
1399
1400 2019-06-25  Jakub Jelinek  <jakub@redhat.com>
1401
1402         * include/pstl/pstl_config.h (_PSTL_PRAGMA_SIMD_SCAN,
1403         _PSTL_PRAGMA_SIMD_INCLUSIVE_SCAN, _PSTL_PRAGMA_SIMD_EXCLUSIVE_SCAN):
1404         Define to OpenMP 5.0 pragmas even for GCC 10.0+.
1405         (_PSTL_UDS_PRESENT): Define to 1 for GCC 10.0+.
1406
1407 2019-06-24  Jonathan Wakely  <jwakely@redhat.com>
1408
1409         * include/std/numeric (midpoint(T, T)): Change implementation for
1410         floating-point types to avoid incorrect rounding of denormals.
1411         * testsuite/26_numerics/midpoint/floating.cc: Add check for correct
1412         rounding with denormals.
1413         * testsuite/26_numerics/gcd/gcd_neg.cc: Adjust dg-error line numbers.
1414         * testsuite/26_numerics/lcm/lcm_neg.cc: Likewise.
1415
1416         * testsuite/18_support/headers/cfloat/values_c++17.cc: New test.
1417
1418 2019-06-20  Jonathan Wakely  <jwakely@redhat.com>
1419
1420         * acinclude.m4 (GLIBCXX_ENABLE_DEBUG): Only do debug build for final
1421         stage of bootstrap.
1422         * configure: Regenerate.
1423
1424         * include/std/variant (_Variant_storage, _Extra_visit_slot_needed):
1425         Qualify calls to __never_valueless.
1426
1427         * doc/xml/manual/status_cxx2017.xml: Fix outdated reference to
1428         C++17 working draft.
1429
1430         * testsuite/libstdc++-prettyprinters/simple.cc: Use non-palindromic
1431         vector<bool> for test.
1432         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
1433
1434 2019-06-19  Jonathan Wakely  <jwakely@redhat.com>
1435
1436         * include/bits/stream_iterator.h (istream_iterator::_M_equal()): Make
1437         private.
1438         (istream_iterator::_M_read()): Do not check stream state before
1439         attempting extraction. Set stream pointer to null when extraction
1440         fails (P0738R2).
1441         (operator==(const istream_iterator&, const istream_iterator&)): Change
1442         to be a hidden friend of istream_iterator.
1443         (operator!=(const istream_iterator&, const istream_iterator&)):
1444         Likewise.
1445         (ostream_iterator::ostream_iterator()): Add default constructor.
1446         (ostream_iterator::ostream_iterator(ostream_type*, const C*)): Use
1447         addressof.
1448         * testsuite/24_iterators/istream_iterator/1.cc: New test.
1449         * testsuite/24_iterators/ostream_iterator/1.cc: New test.
1450         * testsuite/24_iterators/ostream_iterator/70766.cc: Also check
1451         constructor taking a string.
1452         * testsuite/24_iterators/ostream_iterator/requirements/constexpr.cc:
1453         New test.
1454
1455 2019-06-19  Michael Weghorn  <m.weghorn@posteo.de>
1456             Jonathan Wakely  <jwakely@redhat.com>
1457
1458         PR libstdc++/90945
1459         * python/libstdcxx/v6/printers.py (StdVectorPrinter._iterator): Use
1460         values of type bool for vector<bool> elements.
1461         * testsuite/libstdc++-prettyprinters/simple.cc: Test vector<bool>.
1462         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
1463
1464 2019-06-19  Jonathan Wakely  <jwakely@redhat.com>
1465
1466         PR libstdc++/90920 partially revert r263433
1467         * include/bits/stl_algo.h (__rotate): Restore checks for empty ranges.
1468         (rotate): Remove checks.
1469         * testsuite/25_algorithms/rotate/90920.cc: New test.
1470
1471         * include/std/numeric (reduce(Iter, Iter, T, BinOp)): Fix value
1472         category used in invocable check.
1473         (reduce(Iter, Iter, T)): Pass initial value as rvalue.
1474         * testsuite/26_numerics/reduce/2.cc: New test.
1475
1476 2019-06-18  Jonathan Wakely  <jwakely@redhat.com>
1477
1478         * include/bits/algorithmfwd.h: Change title of doc group.
1479         * include/bits/stl_algo.h (for_each_n): Add new C++17 algorithm from
1480         P0024R2.
1481         * include/bits/stl_numeric.h: Define doc group and add algos to it.
1482         * include/std/numeric (__is_random_access_iter): New internal trait.
1483         (reduce, transform_reduce, exclusive_scan, inclusive_scan)
1484         (transform_exclusive_scan, transform_inclusive_scan): Likewise.
1485         * testsuite/25_algorithms/for_each/for_each_n.cc: New test.
1486         * testsuite/26_numerics/exclusive_scan/1.cc: New test.
1487         * testsuite/26_numerics/inclusive_scan/1.cc: New test.
1488         * testsuite/26_numerics/reduce/1.cc: New test.
1489         * testsuite/26_numerics/transform_exclusive_scan/1.cc: New test.
1490         * testsuite/26_numerics/transform_inclusive_scan/1.cc: New test.
1491         * testsuite/26_numerics/transform_reduce/1.cc: New test.
1492         * testsuite/util/testsuite_iterators.h (test_container::size()): New
1493         member function.
1494
1495         * include/c_global/cstddef (std::byte): Perform arithmetic operations
1496         in unsigned int to avoid promotion (LWG 2950).
1497
1498 2019-06-17  Jonathan Wakely  <jwakely@redhat.com>
1499
1500         * testsuite/20_util/allocator/1.cc: Add sized delete, which fixes a
1501         failure on AIX.
1502
1503         * include/c_global/cmath (__lerp, lerp): Add noexcept (LWG 3201).
1504
1505         PR libstdc++/90281 Fix string conversions for filesystem::path
1506         * include/bits/fs_path.h (u8path) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]:
1507         Use codecvt_utf8_utf16 instead of codecvt_utf8. Use
1508         __str_codecvt_in_all to fail for partial conversions and throw on
1509         error.
1510         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS && _GLIBCXX_USE_CHAR8_T]
1511         (path::_Cvt<char8_t>): Add explicit specialization.
1512         [_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_wconvert): Remove
1513         overloads.
1514         [_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_convert): Use
1515         if-constexpr instead of dispatching to _S_wconvert. Use codecvt
1516         instead of codecvt_utf8. Use __str_codecvt_in_all and
1517         __str_codecvt_out_all.
1518         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_convert): Use
1519         codecvt instead of codecvt_utf8. Use __str_codecvt_out_all.
1520         (path::_S_str_convert) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
1521         codecvt_utf8_utf16 instead of codecvt_utf8. Construct return values
1522         with allocator. Use __str_codecvt_out_all. Fallthrough to POSIX code
1523         after converting to UTF-8.
1524         (path::_S_str_convert): Use codecvt instead of codecvt_utf8. Use
1525         __str_codecvt_in_all.
1526         (path::string): Fix initialization of string types with different
1527         allocators.
1528         (path::u8string) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
1529         codecvt_utf8_utf16 instead of codecvt_utf8. Use __str_codecvt_out_all.
1530         * include/bits/locale_conv.h (__do_str_codecvt): Reorder static and
1531         runtime conditions.
1532         (__str_codecvt_out_all, __str_codecvt_in_all): New functions that
1533         return false for partial conversions.
1534         * include/experimental/bits/fs_path.h (u8path):
1535         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Implement correctly for mingw.
1536         [_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_wconvert): Add
1537         missing handling for char8_t. Use codecvt and codecvt_utf8_utf16
1538         instead of codecvt_utf8. Use __str_codecvt_in_all and
1539         __str_codecvt_out_all.
1540         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_convert): Use
1541         codecvt instead of codecvt_utf8. Use __str_codecvt_out_all.
1542         (path::string) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
1543         codecvt_utf8_utf16 instead of codecvt_utf8. Construct return values
1544         with allocator. Use __str_codecvt_out_all and __str_codecvt_in_all.
1545         (path::string) [!_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
1546         __str_codecvt_in_all.
1547         (path::u8string) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
1548         codecvt_utf8_utf16 instead of codecvt_utf8. Use __str_codecvt_out_all.
1549         * src/c++17/fs_path.cc (path::_S_convert_loc): Use
1550         __str_codecvt_in_all.
1551         * src/filesystem/path.cc (path::_S_convert_loc): Likewise.
1552         * testsuite/27_io/filesystem/path/construct/90281.cc: New test.
1553         * testsuite/27_io/filesystem/path/factory/u8path.cc: New test.
1554         * testsuite/27_io/filesystem/path/native/string.cc: Test with empty
1555         strings and with Unicode characters outside the basic multilingual
1556         plane.
1557         * testsuite/27_io/filesystem/path/native/alloc.cc: New test.
1558         * testsuite/experimental/filesystem/path/construct/90281.cc: New test.
1559         * testsuite/experimental/filesystem/path/factory/u8path.cc: New test.
1560         * testsuite/experimental/filesystem/path/native/alloc.cc: New test.
1561         * testsuite/experimental/filesystem/path/native/string.cc: Test with
1562         empty strings and with Unicode characters outside the basic
1563         multilingual plane.
1564
1565 2019-06-17  François Dumont  <fdumont@gcc.gnu.org>
1566             Jonathan Wakely  <jwakely@redhat.com>
1567
1568         * include/bits/hashtable.h (struct _Hashtable::_Scoped_node): New type.
1569         (_Hashtable::_M_insert_unique_node): Add key_type parameter. Don't
1570         deallocate node if insertion fails.
1571         (_Hashtable::_M_insert_multi_node): Likewise.
1572         (_Hashtable::_M_reinsert_node): Pass additional key argument.
1573         (_Hashtable::_M_reinsert_node_multi): Likewise. Remove FIXME.
1574         (_Hashtable::_M_extract_node(size_t, __node_base*)): New function.
1575         (_Hashtable::extract(const_iterator)): Use _M_extract_node.
1576         (_Hashtable::extract(const _Key&)): Likewise.
1577         (_Hashtable::_M_merge_unique): Pass additional key argument.
1578         (_Hashtable::_M_emplace<Args>(true_type, Args&&...)): Likewise. Use
1579         _Scoped_node.
1580         (_Hashtable::_M_insert): Likewise.
1581         * include/bits/hashtable_policy.h (_Map_base::operator[]): Likewise.
1582         (_Hashtable_alloc): Add comments to functions with misleading names.
1583
1584 2019-06-17  Jonathan Wakely  <jwakely@redhat.com>
1585
1586         * testsuite/20_util/bad_function_call/what.cc: Include <string> header
1587         for std::string.
1588         * testsuite/20_util/shared_ptr/cons/weak_ptr_expired.cc: Likewise.
1589         * testsuite/20_util/tuple/cons/allocator_with_any.cc: Include <memory>
1590         header for std::allocator.
1591         * testsuite/23_containers/array/tuple_interface/tuple_element.cc: Add
1592         using-declaration for std::size_t.
1593         * testsuite/23_containers/array/tuple_interface/tuple_size.cc:
1594         Likewise.
1595         * testsuite/23_containers/deque/cons/55977.cc: Include <istream> for
1596         std::istream.
1597         * testsuite/23_containers/vector/cons/55977.cc: Likewise.
1598         * testsuite/experimental/map/erasure.cc: Include <string> for
1599         std::string.
1600         * testsuite/experimental/unordered_map/erasure.cc: Likewise.
1601
1602 2019-06-14  Jonathan Wakely  <jwakely@redhat.com>
1603
1604         * include/experimental/type_traits (experimental::nonesuch): Use
1605         pragma to disable -Wctor-dtor-privacy warnings.
1606         * include/std/type_traits (__is_convertible_helper<From, To, false>)
1607         (__is_nt_convertible_helper<From, To, false>, __nonesuch): Likewise.
1608
1609         * include/std/version (__cpp_lib_bind_front): Add missing macro.
1610
1611 2019-06-12  Jonathan Wakely  <jwakely@redhat.com>
1612
1613         * include/std/algorithm (__cpp_lib_parallel_algorithm): Fix value.
1614         * include/std/memory (__cpp_lib_parallel_algorithm): Likewise.
1615         * include/std/numeric (__cpp_lib_parallel_algorithm): Likewise.
1616         * testsuite/25_algorithms/pstl/feature_test.cc: New test.
1617
1618         * include/std/variant (get<T>, get<N>, get_if<N>, get_if<T>)
1619         (variant::emplace): Change static_assert messages from "should be"
1620         to "must be".
1621         (hash<monostate>::operator()): Remove name of unused parameter.
1622
1623         * include/std/mutex (scoped_lock::~scoped_lock()): Use fold
1624         expression.
1625
1626         * include/Makefile.am: Add new <bits/charconv.h> header.
1627         * include/Makefile.in: Regenerate.
1628         * include/bits/basic_string.h (to_string(int), to_string(unsigned))
1629         (to_string(long), to_string(unsigned long), to_string(long long))
1630         (to_string(unsigned long long)): Rewrite to use __to_chars_10_impl.
1631         * include/bits/charconv.h: New header.
1632         (__detail::__to_chars_len): Move here from <charconv>.
1633         (__detail::__to_chars_10_impl): New function extracted from
1634         __detail::__to_chars_10.
1635         * include/std/charconv (__cpp_lib_to_chars): Add, but comment out.
1636         (__to_chars_unsigned_type): New class template that reuses
1637         __make_unsigned_selector_base::__select to pick a type.
1638         (__unsigned_least_t): Redefine as __to_chars_unsigned_type<T>::type.
1639         (__detail::__to_chars_len): Move to new header.
1640         (__detail::__to_chars_10): Add inline specifier. Move code doing the
1641         output to __detail::__to_chars_10_impl and call that.
1642         * include/std/version (__cpp_lib_to_chars): Add, but comment out.
1643         * testsuite/21_strings/basic_string/numeric_conversions/char/
1644         to_string.cc: Fix reference in comment. Remove unused variable.
1645         * testsuite/21_strings/basic_string/numeric_conversions/char/
1646         to_string_int.cc: New test.
1647
1648 2019-06-09  Edward Smith-Rowland  <3dw4rd@verizon.net>
1649
1650         Fix ConstexprIterator requirements tests - No constexpr algorithms!
1651         * testsuite/21_strings/basic_string_view/requirements/constexpr_iter.cc:
1652         Replace copy with hand-rolled loop.
1653         * testsuite/23_containers/array/requirements/constexpr_iter.cc:
1654         Ditto.
1655
1656 2019-06-08  Edward Smith-Rowland  <3dw4rd@verizon.net>
1657
1658         Test for C++20 p0858 - ConstexprIterator requirements.
1659         * testsuite/21_strings/basic_string_view/requirements/constexpr_iter.cc:
1660         New test.
1661         * testsuite/23_containers/array/requirements/constexpr_iter.cc:
1662         New test.
1663
1664 2019-06-07  Thomas Rodgers  <trodgers@redhat.com>
1665
1666         Rename PSTL macro's consistent with libstdc++ (and llvm upstream
1667         project) standards.
1668         * include/bits/c++config: Rename all macros of the form __PSTL* to
1669         _PSTL*.
1670         * include/std/algorithm: Likewise.
1671         * include/std/execution: Likewise.
1672         * include/std/numeric: Likewise.
1673         * include/std/memory: Likewise.
1674         * include/pstl/glue_memory_impl.h: Likewise.
1675         * include/pstl/numeric_impl.h: Likewise.
1676         * include/pstl/glue_memory_defs.h: Likewise.
1677         * include/pstl/execution_defs.h: Likewise.
1678         * include/pstl/utils.h: Likewise.
1679         * include/pstl/algorithm_fwd.h: Likewise.
1680         * include/pstl/unseq_backend_simd.h: Likewise.
1681         * include/pstl/glue_execution_defs.h: Likewise.
1682         * include/pstl/algorithm_impl.h: Likewise.
1683         * include/pstl/parallel_impl.h: Likewise.
1684         * include/pstl/memory_impl.h: Likewise.
1685         * include/pstl/glue_numeric_defs.h: Likewise.
1686         * include/pstl/parallel_backend_utils.h: Likewise.
1687         * include/pstl/glue_algorithm_defs.h: Likewise.
1688         * include/pstl/parallel_backend.h: Likewise.
1689         * include/pstl/glue_numeric_impl.h: Likewise.
1690         * include/pstl/parallel_backend_tbb.h: Likewise.
1691         * include/pstl/numeric_fwd.h: Likewise.
1692         * include/pstl/glue_algorithm_impl.h: Likewise.
1693         * include/pstl/execution_impl.h: Likewise.
1694         * include/pstl/pstl_config.h: Likewise.
1695         * testsuite/util/pstl/pstl_test_config.h: Likewise.
1696         * testsuite/util/pstl/test_utils.h: Likewise.
1697         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc:
1698         Likewise.
1699         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc:
1700         Likewise.
1701         * testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc:
1702         Likewise.
1703         * testsuite/26_numerics/pstl/numeric_ops/scan.cc: Likewise.
1704         * testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc: Likewise.
1705         * testsuite/26_numerics/pstl/numeric_ops/reduce.cc: Likewise.
1706         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc: Likewise.
1707         * testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc:
1708         Likewise.
1709         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc: Likewise.
1710         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc: Likewise.
1711         * testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc: Likewise.
1712         * testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc: Likewise.
1713         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc:
1714         Likewise.
1715         * testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc: Likewise.
1716         * testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc: Likewise.
1717         * testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc: Likewise.
1718         * testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc: Likewise.
1719         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc:
1720         Likewise.
1721         * testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: Likewise.
1722         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc: Likewise.
1723         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc:
1724         Likewise.
1725         * testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc:
1726         Likewise.
1727         * testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: Likewise.
1728         * testsuite/25_algorithms/pstl/alg_merge/merge.cc: Likewise.
1729         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc:
1730         Likewise.
1731         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc:
1732         Likewise.
1733         * testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc:
1734         Likewise.
1735         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc:
1736         Likewise.
1737         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc:
1738         Likewise.
1739         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc:
1740         Likewise.
1741         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc:
1742         Likewise.
1743         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc:
1744         Likewise.
1745         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc:
1746         Likewise.
1747         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc:
1748         Likewise.
1749         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc:
1750         Likewise.
1751         * testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc: Likewise.
1752
1753         Rename header guards to be consistent with upstream project's
1754         conventions.
1755         * include/pstl/glue_memory_impl.h: Rename all macros of the form
1756         _PSTL_(.*)_H to _PSTL_\U\1_H.
1757         * include/pstl/numeric_impl.h: Likewise.
1758         * include/pstl/glue_memory_defs.h: Likewise.
1759         * include/pstl/execution_defs.h: Likewise.
1760         * include/pstl/utils.h: Likewise.
1761         * include/pstl/algorithm_fwd.h: Likewise.
1762         * include/pstl/unseq_backend_simd.h: Likewise.
1763         * include/pstl/glue_execution_defs.h: Likewise.
1764         * include/pstl/algorithm_impl.h: Likewise.
1765         * include/pstl/parallel_impl.h: Likewise.
1766         * include/pstl/memory_impl.h: Likewise.
1767         * include/pstl/glue_numeric_defs.h: Likewise.
1768         * include/pstl/parallel_backend_utils.h: Likewise.
1769         * include/pstl/glue_algorithm_defs.h: Likewise.
1770         * include/pstl/parallel_backend.h: Likewise.
1771         * include/pstl/glue_numeric_impl.h: Likewise.
1772         * include/pstl/parallel_backend_tbb.h: Likewise.
1773         * include/pstl/numeric_fwd.h: Likewise.
1774         * include/pstl/glue_algorithm_impl.h: Likewise.
1775         * include/pstl/execution_impl.h: Likewise.
1776         * include/pstl/pstl_config.h: Likewise.
1777         * testsuite/util/pstl/pstl_test_config.h: Likewise.
1778
1779         Synchronize libstdc++ parallel algorithms with upstream
1780         project.
1781         * include/pstl/algorithm_fwd.h: Synchronize with
1782         upstream PSTL project.
1783         * include/pstl/algorithm_impl.h: Likewise.
1784         * include/pstl/execution_defs.h: Likewise.
1785         * include/pstl/execution_impl.h: Likewise.
1786         * include/pstl/glue_algorithm_impl.h: Likewise.
1787         * include/pstl/glue_execution_defs.h: Likewise.
1788         * include/pstl/numeric_fwd.h: Likewise.
1789         * include/pstl/numeric_impl.h: Likewise.
1790         * include/pstl/parallel_backend.h: Likewise.
1791         * include/pstl/pstl_config.h: Likewise.
1792         * include/pstl/unseq_backend_simd.h: Likewise.
1793         * include/pstl/parallel_backend_serial.h: New file.
1794         * include/Makefile.am (pstl_headers): Add
1795         parallel_backend_serial.h.
1796         * include/Makefile.in: Regenerate.
1797
1798         Clean up non-conforming names
1799         * include/pstl/algorithm_impl.h (__parallel_set_union_op):
1800         Uglfiy copy_range1 and copy_range2
1801         (__pattern_walk2_n): Rename local n to __n
1802         * include/pstl/parallel_backend_tbb.h (struct __binary_no_op):
1803         Rename parameter _T to _Tp.
1804
1805         Integrate non-TBB serial backend support
1806         * include/bits/c++config: Adjust TBB detection logic to select serial
1807         PSTL backend if no TBB present.
1808         * testsuite/utils/pstl/test_utils.h: Remove check for
1809         _PSTL_USE_PAR_POLICIES
1810
1811 2019-06-07  Jonathan Wakely  <jwakely@redhat.com>
1812
1813         * testsuite/24_iterators/container_access.cc: Move dg-options before
1814         dg-do directive so the target check uses the -std option.
1815
1816         PR libstdc++/90770
1817         * configure: Regenerate.
1818         * src/Makefile.am (stamp-debug): Also test for missing makefile.
1819         * src/Makefile.in: Regenerate.
1820
1821 2019-06-06  Jonathan Wakely  <jwakely@redhat.com>
1822
1823         * include/std/array: Do not include <stdexcept>.
1824         * include/std/optional: Include <exception> and
1825         <bits/exception_defines.h> instead of <stdexcept>.
1826         * testsuite/20_util/function_objects/searchers.cc: Include <cctype>
1827         for std::isalnum.
1828         * testsuite/20_util/tuple/cons/deduction.cc: Include <memory> for
1829         std::allocator.
1830         * testsuite/23_containers/map/erasure.cc: Include <string>.
1831         * testsuite/23_containers/unordered_map/erasure.cc: Likewise.
1832
1833         * testsuite/23_containers/deque/requirements/dr438/assign_neg.cc: Add
1834         dg-prune-output for different C++98 diagnostic.
1835         * testsuite/23_containers/deque/requirements/dr438/constructor_1_neg.cc:
1836         Likewise.
1837         * testsuite/23_containers/deque/requirements/dr438/constructor_2_neg.cc:
1838         Likewise.
1839         * testsuite/23_containers/deque/requirements/dr438/insert_neg.cc:
1840         Likewise.
1841         * testsuite/23_containers/list/requirements/dr438/assign_neg.cc:
1842         Likewise.
1843         * testsuite/23_containers/list/requirements/dr438/constructor_1_neg.cc:
1844         Likewise.
1845         * testsuite/23_containers/list/requirements/dr438/constructor_2_neg.cc:
1846         Likewise.
1847         * testsuite/23_containers/list/requirements/dr438/insert_neg.cc:
1848         Likewise.
1849         * testsuite/23_containers/vector/requirements/dr438/assign_neg.cc:
1850         Likewise.
1851         * testsuite/23_containers/vector/requirements/dr438/
1852         constructor_1_neg.cc: Likewise.
1853         * testsuite/23_containers/vector/requirements/dr438/
1854         constructor_2_neg.cc: Likewise.
1855         * testsuite/23_containers/vector/requirements/dr438/insert_neg.cc:
1856         Likewise.
1857         * testsuite/libstdc++-prettyprinters/compat.cc: Do not run for C++98.
1858
1859         * testsuite/23_containers/unordered_map/requirements/debug_container.cc:
1860         Do not test allocator rebinding extension for C++2a.
1861         * testsuite/23_containers/unordered_set/allocator/ext_ptr.cc: Change
1862         dg-do directive for C++17 and C++2a.
1863
1864         * testsuite/23_containers/deque/requirements/explicit_instantiation/
1865         1_c++0x.cc: Remove redundant test.
1866         * testsuite/23_containers/deque/requirements/explicit_instantiation/
1867         2.cc: Use target selector instead of preprocessor condition.
1868         * testsuite/23_containers/deque/requirements/explicit_instantiation/
1869         3.cc: Do not run test for C++2a.
1870         * testsuite/23_containers/forward_list/requirements/
1871         explicit_instantiation/3.cc: Likewise.
1872         * testsuite/23_containers/forward_list/requirements/
1873         explicit_instantiation/5.cc: Do not test allocator rebinding extension
1874         for C++2a.
1875         * testsuite/23_containers/list/requirements/explicit_instantiation/
1876         1_c++0x.cc: Remove redundant test.
1877         * testsuite/23_containers/list/requirements/explicit_instantiation/
1878         2.cc: Use target selector instead of preprocessor condition.
1879         * testsuite/23_containers/list/requirements/explicit_instantiation/
1880         3.cc: Do not run test for C++2a.
1881         * testsuite/23_containers/list/requirements/explicit_instantiation/
1882         5.cc: Do not test allocator rebinding extension for C++2a.
1883         * testsuite/23_containers/map/requirements/explicit_instantiation/
1884         1_c++0x.cc: Remove redundant test.
1885         * testsuite/23_containers/map/requirements/explicit_instantiation/
1886         2.cc: Adjust comment.
1887         * testsuite/23_containers/map/requirements/explicit_instantiation/
1888         3.cc: Do not run test for C++2a.
1889         * testsuite/23_containers/map/requirements/explicit_instantiation/
1890         5.cc: Do not test allocator rebinding extension for C++2a.
1891         * testsuite/23_containers/multimap/requirements/explicit_instantiation/
1892         1_c++0x.cc: Remove redundant test.
1893         * testsuite/23_containers/multimap/requirements/explicit_instantiation/
1894         3.cc: Do not run test for C++2a.
1895         * testsuite/23_containers/multimap/requirements/explicit_instantiation/
1896         5.cc: Do not test allocator rebinding extension for C++2a.
1897         * testsuite/23_containers/multiset/requirements/explicit_instantiation/
1898         3.cc: Do not run test for C++2a.
1899         * testsuite/23_containers/multiset/requirements/explicit_instantiation/
1900         5.cc: Do not test allocator rebinding extension for C++2a.
1901         * testsuite/23_containers/set/requirements/explicit_instantiation/3.cc:
1902         Do not run test for C++2a.
1903         * testsuite/23_containers/set/requirements/explicit_instantiation/
1904         1_c++0x.cc: Remove redundant test.
1905         * testsuite/23_containers/set/requirements/explicit_instantiation/5.cc:
1906         Do not test allocator rebinding extension for C++2a.
1907         * testsuite/23_containers/unordered_map/requirements/
1908         explicit_instantiation/3.cc: Likewise.
1909         * testsuite/23_containers/unordered_map/requirements/
1910         explicit_instantiation/5.cc: Do not test allocator rebinding extension
1911         for C++2a.
1912         * testsuite/23_containers/unordered_multimap/requirements/
1913         explicit_instantiation/3.cc: Do not run test for C++2a.
1914         * testsuite/23_containers/unordered_multimap/requirements/
1915         explicit_instantiation/5.cc: Do not test allocator rebinding extension
1916         for C++2a.
1917         * testsuite/23_containers/unordered_multiset/requirements/
1918         explicit_instantiation/3.cc: Do not run test for C++2a.
1919         * testsuite/23_containers/unordered_multiset/requirements/
1920         explicit_instantiation/5.cc: Do not test allocator rebinding extension
1921         for C++2a.
1922         * testsuite/23_containers/unordered_set/requirements/
1923         explicit_instantiation/3.cc: Do not run test for C++2a.
1924         * testsuite/23_containers/unordered_set/requirements/
1925         explicit_instantiation/5.cc: Do not test allocator rebinding extension
1926         for C++2a.
1927         * testsuite/23_containers/vector/ext_pointer/explicit_instantiation/
1928         2.cc: Remove redundant test.
1929         * testsuite/23_containers/vector/ext_pointer/explicit_instantiation/
1930         3.cc: Do not run test for C++2a.
1931         * testsuite/23_containers/vector/requirements/explicit_instantiation/
1932         3.cc: Likewise.
1933
1934         * include/std/type_traits (is_empty, is_polymorphic, is_final)
1935         (is_abstract, is_aggregate): Remove static_assert.
1936         * testsuite/20_util/is_abstract/incomplete_neg.cc: Check for error
1937         from builtin only.
1938         * testsuite/20_util/is_aggregate/incomplete_neg.cc: Likewise. Add
1939         missing -std=gnu++17 option.
1940         * testsuite/20_util/is_empty/incomplete_neg.cc: New test.
1941         * testsuite/20_util/is_final/incomplete_neg.cc: New test.
1942         * testsuite/20_util/is_polymorphic/incomplete_neg.cc: Check for error
1943         from builtin only.
1944
1945         * testsuite/18_support/set_terminate.cc: Do not run for C++98 mode.
1946         * testsuite/18_support/set_unexpected.cc: Likewise.
1947         * testsuite/20_util/is_nothrow_invocable/value.cc: Test converting to
1948         void.
1949         * testsuite/20_util/is_nothrow_invocable/value_ext.cc: Fix constexpr
1950         function to be valid in C++11.
1951         * testsuite/26_numerics/complex/proj.cc: Do not run for C++98 mode.
1952         * testsuite/experimental/names.cc: Do not run for C++98 mode. Do not
1953         include Library Fundamentals or Networking headers in C++11 mode.
1954         * testsuite/ext/char8_t/atomic-1.cc: Do not run for C++98 mode.
1955
1956         * include/std/tuple (_TC): Replace with _TupleConstraints.
1957         (_TupleConstraints): New helper for SFINAE constraints, with more
1958         expressive member functions to reduce duplication when used.
1959         (tuple::_TC2, tuple::_TMC, tuple::_TNTC): Remove.
1960         (tuple::_TCC): Replace dummy type parameter with bool non-type
1961         parameter that can be used to check the pack size.
1962         (tuple::_ImplicitDefaultCtor, tuple::_ExplicitDefaultCtor)
1963         (tuple::_ImplicitCtor, tuple::_ExplicitCtor): New alias templates for
1964         checking constraints in constructors.
1965         (tuple::__valid_args, tuple::_UseOtherCtor, tuple::__use_other_ctor):
1966         New SFINAE helpers.
1967         (tuple::tuple): Use new helpers to reduce repitition in constraints.
1968         (tuple::tuple(allocator_arg_t, const Alloc&)): Constrain.
1969         (tuple<T1, T2>::_TCC, tuple<T1, T2>::_ImplicitDefaultCtor)
1970         (tuple<T1, T2>::_ExplicitDefaultCtor, tuple<T1, T2>::_ImplicitCtor)
1971         (tuple<T1, T2>::_ExplicitCtor): New alias templates for checking
1972         constraints in constructors.
1973         (tuple::__is_alloc_arg()): New SFINAE helpers.
1974         (tuple<T1, T2>::tuple): Use new helpers to reduce repitition in
1975         constraints.
1976         (tuple<T1, T2>::tuple(allocator_arg_t, const Alloc&)): Constrain.
1977         * testsuite/20_util/tuple/cons/90700.cc: New test.
1978         * testsuite/20_util/tuple/cons/allocators.cc: Add default constructor
1979         to meet new constraint on allocator-extended default constructor.
1980
1981 2019-06-03  Jonathan Wakely  <jwakely@redhat.com>
1982
1983         * include/bits/stl_map.h (map): Disable static assert for C++98 mode.
1984         * include/bits/stl_multimap.h (multimap): Likewise.
1985
1986 2019-06-03  François Dumont  <fdumont@gcc.gnu.org>
1987
1988         Rename variables and cleanup comments.
1989         * include/bits/hashtable_policy.h
1990         * include/bits/hashtable.h
1991
1992 2019-06-03  Jonathan Wakely  <jwakely@redhat.com>
1993
1994         * doc/xml/manual/status_cxx2020.xml: Add missing row for P0920R2.
1995         Fix bgcolor for P0340R3.
1996         * doc/html/*: Regenerate.
1997
1998         PR libstdc++/90686
1999         * doc/xml/manual/status_cxx2014.xml: Document what's missing from
2000         <experimental/memory_resource>.
2001         * doc/xml/manual/status_cxx2020.xml: Document status of P1285R0,
2002         P0339R6, P0340R3, P1164R1 and P1357R1.
2003         * doc/html/*: Regenerate.
2004
2005         * doc/xml/manual/status_cxx2020.xml: Document P1463R1 status.
2006         * include/bits/forward_list.h [__cplusplus > 201703]: Enable
2007         allocator::value_type assertion for C++2a.
2008         * include/bits/hashtable.h: Likewise.
2009         * include/bits/stl_deque.h: Likewise.
2010         * include/bits/stl_list.h: Likewise.
2011         * include/bits/stl_map.h: Likewise.
2012         * include/bits/stl_multimap.h: Likewise.
2013         * include/bits/stl_multiset.h: Likewise.
2014         * include/bits/stl_set.h: Likewise.
2015         * include/bits/stl_vector.h: Likewise.
2016         * testsuite/23_containers/deque/48101-3_neg.cc: New test.
2017         * testsuite/23_containers/forward_list/48101-3_neg.cc: New test.
2018         * testsuite/23_containers/list/48101-3_neg.cc: New test.
2019         * testsuite/23_containers/map/48101-3_neg.cc: New test.
2020         * testsuite/23_containers/multimap/48101-3_neg.cc: New test.
2021         * testsuite/23_containers/multiset/48101-3_neg.cc: New test.
2022         * testsuite/23_containers/set/48101-3_neg.cc: New test.
2023         * testsuite/23_containers/unordered_map/48101-3_neg.cc: New test.
2024         * testsuite/23_containers/unordered_multimap/48101-3_neg.cc: New test.
2025         * testsuite/23_containers/unordered_multiset/48101-3_neg.cc: New test.
2026         * testsuite/23_containers/unordered_set/48101-3_neg.cc: New test.
2027         * testsuite/23_containers/vector/48101-3_neg.cc: New test.
2028
2029 2019-05-31  Gerald Pfeifer  <gerald@pfeifer.com>
2030
2031         * doc/xml/manual/allocator.xml: Move hoard.org back to http.
2032
2033 2019-05-31  Jonathan Wakely  <jwakely@redhat.com>
2034
2035         * include/std/tuple (tuple<>): Add noexcept to allocator-extended
2036         constructors.
2037         (tuple<T1, T2>::__nothrow_default_constructible()): New helper
2038         function.
2039         (tuple<T1, T2>::tuple(), explicit tuple<T1, T2>::tuple()): Use helper.
2040
2041 2019-05-31  Jonathan Wakely  <jwakely@redhat.com>
2042
2043         * src/c++98/bitmap_allocator.cc: Add using-declaration for size_t.
2044
2045         PR libstdc++/90682
2046         * libsupc++/eh_term_handler.cc: Include eh_term_handler.h to get
2047         definition of _GLIBCXX_DEFAULT_TERM_HANDLER.
2048         * libsupc++/eh_term_handler.h: New header defining
2049         _GLIBCXX_DEFAULT_TERM_HANDLER.
2050         * libsupc++/eh_terminate.cc: Include eh_term_handler.h.
2051         (set_terminate): Restore default handler when argument is null.
2052         (set_unexpected): Likewise.
2053         * testsuite/18_support/set_terminate.cc: New test.
2054         * testsuite/18_support/set_unexpected.cc: New test.
2055
2056         * include/backward/hashtable.h (size_t, ptrdiff_t)
2057         (forward_iterator_tag, input_iterator_tag, _Construct, _Destroy)
2058         (distance, vector, pair, __iterator_category): Remove
2059         using-declarations that add these names to namespace __gnu_cxx.
2060         * include/ext/bitmap_allocator.h (size_t, ptrdiff_t): Likewise.
2061         * include/ext/debug_allocator.h (size_t): Likewise.
2062         * include/ext/functional (size_t, unary_function, binary_function)
2063         (mem_fun1_t, const_mem_fun1_t, mem_fun1_ref_t, const_mem_fun1_ref_t):
2064         Likewise.
2065         * include/ext/malloc_allocator.h (size_t, ptrdiff_t): Likewise.
2066         * include/ext/memory (ptrdiff_t, pair, __iterator_category): Likewise.
2067         * include/ext/mt_allocator.h (size_t, ptrdiff_t): Likewise.
2068         * include/ext/new_allocator.h (size_t, ptrdiff_t): Likewise.
2069         * include/ext/numeric (iota): Fix outdated comment.
2070         * include/ext/pool_allocator.h (size_t, ptrdiff_t): Likewise.
2071         * include/ext/rb_tree (_Rb_tree, allocator): Likewise.
2072         * include/ext/rope (size_t, ptrdiff_t, allocator, _Destroy): Likewise.
2073         * include/ext/ropeimpl.h (size_t, printf, basic_ostream)
2074         (__throw_length_error, _Destroy, std::__uninitialized_fill_n_a):
2075         Likewise.
2076         * include/ext/slist (size_t, ptrdiff_t, _Construct, _Destroy)
2077         (allocator, __true_type, __false_type): Likewise.
2078
2079 2019-05-31  Antony Polukhin  <antoshkka@gmail.com>
2080
2081         PR libstdc++/71579
2082         * include/std/type_traits __type_identity, __is_complete_or_unbounded):
2083         New helpers for checking preconditions in traits.
2084         (is_trivial, is_trivially_copyable, is_standard_layout, is_pod)
2085         (is_literal_type, is_empty, is_polymorphic, is_final, is_abstract)
2086         (is_destructible, is_nothrow_destructible, is_constructible)
2087         (is_default_constructible, is_copy_constructible)
2088         (is_move_constructible, is_nothrow_default_constructible)
2089         (is_nothrow_constructible, is_nothrow_copy_constructible)
2090         (is_nothrow_move_constructible, is_copy_assignable, is_move_assignable)
2091         (is_nothrow_assignable, is_nothrow_copy_assignable)
2092         (is_nothrow_move_assignable, is_trivially_constructible)
2093         (is_trivially_copy_constructible, is_trivially_move_constructible)
2094         is_trivially_assignable, is_trivially_copy_assignable)
2095         (is_trivially_move_assignable, is_trivially_destructible)
2096         (alignment_of, is_swappable, is_nothrow_swappable, is_invocable)
2097         (is_invocable_r, is_nothrow_invocable)
2098         (has_unique_object_representations, is_aggregate): Add static_asserts
2099         to make sure that type traits are not misused with incomplete types.
2100         (__is_constructible_impl, __is_nothrow_default_constructible_impl)
2101         (__is_nothrow_constructible_impl, __is_nothrow_assignable_impl): New
2102         base characteristics without assertions that can be reused in other
2103         traits.
2104         * testsuite/20_util/is_complete_or_unbounded/memoization.cc: New test.
2105         * testsuite/20_util/is_complete_or_unbounded/memoization_neg.cc: New
2106         test.
2107         * testsuite/20_util/is_complete_or_unbounded/value.cc: New test.
2108         * testsuite/20_util/is_abstract/incomplete_neg.cc: New test.
2109         * testsuite/20_util/is_aggregate/incomplete_neg.cc: New test.
2110         * testsuite/20_util/is_class/value.cc: Check incomplete type.
2111         * testsuite/20_util/is_function/value.cc: Likewise.
2112         * testsuite/20_util/is_move_constructible/incomplete_neg.cc: New test.
2113         * testsuite/20_util/is_nothrow_move_assignable/incomplete_neg.cc: New
2114         test.
2115         * testsuite/20_util/is_polymorphic/incomplete_neg.cc: New test.
2116         * testsuite/20_util/is_reference/value.cc: Check incomplete types.
2117         * testsuite/20_util/is_unbounded_array/value.cc: Likewise.
2118         * testsuite/20_util/is_union/value.cc: Likewise.
2119         * testsuite/20_util/is_void/value.cc: Likewise.
2120         * testsuite/util/testsuite_tr1.h: Add incomplete union type.
2121
2122 2019-05-31  Jonathan Wakely  <jwakely@redhat.com>
2123
2124         * include/bits/random.h (random_device::_M_init(const char*, size_t)):
2125         Add new private member function.
2126         * src/c++11/cow-string-inst.cc (random_device::_M_init(const string&))
2127         (random_device::_M_init_pretr1(const string&)): Call new private
2128         member with string data.
2129         * src/c++11/random.cc (random_device::_M_init(const char*, size_t)):
2130         Define.
2131         * testsuite/26_numerics/random/random_device/cons/default-cow.cc: New
2132         test using COW strings.
2133         * testsuite/26_numerics/random/random_device/cons/default.cc: Generate
2134         a value from the device.
2135         * testsuite/26_numerics/random/random_device/cons/token.cc: Likewise.
2136         Fix typo in token string.
2137
2138 2019-05-30  Nina Dinka Ranns  <dinka.ranns@gmail.com>
2139
2140         LWG2788 basic_string spurious use of a default constructible allocator
2141         * include/bits/basic_string.tcc [_GLIBCXX_USE_CXX11_ABI]
2142         (basic_string::_M_replace_dispatch): Construct temporary string with
2143         the current allocator.
2144         * testsuite/21_strings/basic_string/allocator/char/lwg2788.cc: New.
2145         * testsuite/21_strings/basic_string/allocator/wchar_t/lwg2788.cc: New.
2146
2147 2019-05-30  Jonathan Wakely  <jwakely@redhat.com>
2148
2149         * doc/xml/manual/diagnostics.xml: Update list of headers that define
2150         exception classes.
2151         * doc/xml/manual/support.xml: Rewrite advice around NULL. Rewrite
2152         section about new/delete overloads. Improve section on verbose
2153         terminate handler.
2154         * doc/html/*: Regenerate.
2155
2156         * doc/xml/manual/status_cxx2020.xml: Add feature-test macro for
2157         P0811R3. Change status of P1353R0.
2158         * doc/html/*: Regenerate.
2159
2160         * doc/xml/manual/status_cxx2011.xml: Use <variablelist> for
2161         documentation of implementation-defined types for [thread.req.native].
2162         * doc/xml/manual/status_cxx2017.xml: Update documentation of
2163         implementation-defined strings for [variant.bad.access]. Fix typo in
2164         documentation of implementation-defined support for [fs.conform.9945].
2165         * doc/html/*: Regenerate.
2166
2167 2019-05-29  Jonathan Wakely  <jwakely@redhat.com>
2168
2169         PR libstdc++/85494
2170         * testsuite/26_numerics/random/random_device/cons/token.cc: Fix test
2171         that fails on mingw-w64.
2172
2173         PR libstdc++/88881
2174         * src/c++17/fs_ops.cc [_GLIBCXX_FILESYSTEM_IS_WINDOWS]
2175         (status(const path&, error_code&)): Use parent_path() to remove
2176         trailing slash.
2177         (symlink_status(const path&, error_code&)): Duplicate workaround for
2178         bug in _wstat for paths with trailing slash.
2179         * testsuite/27_io/filesystem/operations/remove_all.cc: Check path
2180         with trailing slash.
2181         * testsuite/27_io/filesystem/operations/status.cc: Likewise.
2182         * testsuite/27_io/filesystem/operations/symlink_status.cc: Likewise.
2183
2184         * src/c++17/fs_path.cc (path::parent_path()): Create whole path at
2185         once instead of building it iteratively.
2186
2187         * testsuite/util/testsuite_api.h: Remove names of unused parameters.
2188
2189         PR libstdc++/85494 use rdseed and rand_s in std::random_device
2190         * acinclude.m4 (GLIBCXX_CHECK_X86_RDSEED): Define macro to check if
2191         the assembler supports rdseed.
2192         * config.h.in: Regenerate.
2193         * configure: Regenerate.
2194         * configure.ac: Use GLIBCXX_CHECK_X86_RDSEED.
2195         * config/os/mingw32-w64/os_defines.h (_GLIBCXX_USE_CRT_RAND_S): Define.
2196         * doc/html/*: Regenerate.
2197         * doc/xml/manual/status_cxx2011.xml: Document new tokens.
2198         * include/bits/random.h (random_device::random_device()): Always call
2199         _M_init rather than _M_init_pretr1.
2200         (random_device::random_device(const string&)): Likewise.
2201         (random_device::operator()()): Always call _M_getval().
2202         (random_device::_M_file): Replace first member of union with an
2203         anonymous struct, with _M_file as its first member.
2204         * src/c++11/random.cc [_GLIBCXX_X86_RDRAND] (USE_RDRAND): Define.
2205         [_GLIBCXX_X86_RDSEED] (USE_RDSEED): Define.
2206         (USE_MT19937): Define if none of the above are defined.
2207         (USE_POSIX_FILE_IO): Define.
2208         (_M_strtoul): Remove.
2209         [USE_RDSEED] (__x86_rdseed): Define new function.
2210         [_GLIBCXX_USE_CRT_RAND_S] (__winxp_rand_s): Define new function.
2211         (random_device::_M_init(const string&)): Initialize new union members.
2212         Add support for "rdseed" and "rand_s" tokens. Decide what the
2213         "default" token does according to which USE_* macros are defined.
2214         [USE_POSIX_FILE_IO]: Store a file descriptor.
2215         [USE_MT19937]: Forward to _M_init_pretr1 instead.
2216         (random_device::_M_init_pretr1(const string&)) [USE_MT19937]: Inline
2217         code from _M_strtoul.
2218         [!USE_MT19937]: Call _M_init, transforming the old default token or
2219         numeric tokens to "default".
2220         (random_device::_M_fini()) [USE_POSIX_FILE_IO]: Use close not fclose.
2221         (random_device::_M_getval()): Use new union members to obtain a
2222         random number from the stored function pointer or file descriptor.
2223         [USE_MT19937]: Obtain a value from the mt19937 engine.
2224         (random_device::_M_getval_pretr1()): Call _M_getval().
2225         (random_device::_M_getentropy()) [USE_POSIX_FILE_IO]: Use _M_fd
2226         instead of fileno.
2227         [!USE_MT19937] (mersenne_twister): Do not instantiate when not needed.
2228         * testsuite/26_numerics/random/random_device/85494.cc: New test.
2229
2230 2019-05-28  Jonathan Wakely  <jwakely@redhat.com>
2231
2232         PR libstdc++/90634
2233         * include/experimental/bits/fs_path.h (path::path(path&&)): Only call
2234         _M_split_cmpts() for a path with multiple components.
2235         (path::_S_is_dir_sep()): Add missing 'static' keyword to function.
2236         * src/filesystem/path.cc (path::_M_split_cmpts()): Count number of
2237         components and reserve space in vector. Return early when there is
2238         only one component.
2239         * testsuite/27_io/filesystem/path/construct/90634.cc: New test.
2240         * testsuite/experimental/filesystem/path/construct/90634.cc: New test.
2241
2242         * testsuite/util/testsuite_fs.h (compare_paths): Use three-argument
2243         form of std::equals for C++11 compatibility.
2244
2245 2019-05-26  Gerald Pfeifer  <gerald@pfeifer.com>
2246
2247         * doc/xml/manual/appendix_contributing.xml: Update pointer to
2248         C++ standard at ansi.org.
2249
2250 2019-05-24  Jonathan Wakely  <jwakely@redhat.com>
2251
2252         * include/std/numeric (midpoint(T*, T*)): Fix incorrect result.
2253         * testsuite/26_numerics/midpoint/pointer.cc: Change "compile" test
2254         to "run".
2255
2256         * testsuite/20_util/shared_ptr/cons/alias-rval.cc: Fix test.
2257         * testsuite/20_util/shared_ptr/cons/alias.cc: Remove unused function.
2258
2259 2019-05-23  Jonathan Wakely  <jwakely@redhat.com>
2260
2261         * testsuite/20_util/function_objects/invoke/1.cc: Move C++17-specific
2262         tests to ...
2263         * testsuite/20_util/function_objects/invoke/3.cc: New test.
2264         * testsuite/23_containers/unordered_set/allocator/ext_ptr.cc: Change
2265         "compile" test to "run".
2266
2267         * doc/xml/manual/intro.xml: Document LWG DR 2996 change.
2268         * doc/html/*: Regenerate.
2269         * include/bits/shared_ptr.h (shared_ptr(shared_ptr&&, T*)): Add
2270         rvalue aliasing constructor.
2271         (static_pointer_cast, const_pointer, dynamic_pointer_cast)
2272         (reinterpret_pointer_cast): Add overloads taking rvalues.
2273         * include/bits/shared_ptr_base.h (__shared_ptr(__shared_ptr&&, T*)):
2274         Add rvalue aliasing constructor.
2275         * testsuite/20_util/shared_ptr/casts/1.cc: Change "compile" test to
2276         "run" and check return values as well as types.
2277         * testsuite/20_util/shared_ptr/casts/reinterpret.cc: Likewise.
2278         * testsuite/20_util/shared_ptr/casts/rval.cc: New test.
2279         * testsuite/20_util/shared_ptr/cons/alias-rval.cc: New test.
2280         * testsuite/20_util/shared_ptr/cons/alias.cc: Remove unused return
2281         values.
2282
2283         * doc/xml/manual/evolution.xml: Document LWG DR 2921 change.
2284         * doc/xml/manual/intro.xml: Likewise.
2285         * include/std/future (__create_task_state): Add default arguments
2286         to make providing an allocator optional.
2287         (packaged_task::packaged_task(F&&)): Call __create_task_state directly
2288         instead of delegating to another constructor.
2289         (packaged_task::packaged_task(allocator_arg_t, const A&, ...)): Do not
2290         define allocator-extended constructors for C++17 and later.
2291         * testsuite/30_threads/packaged_task/cons/alloc.cc: Only run test for
2292         C++11 and C++14.
2293         * testsuite/30_threads/packaged_task/cons/alloc2.cc: Likewise.
2294         * testsuite/30_threads/packaged_task/cons/alloc_min.cc: Likewise.
2295         * testsuite/30_threads/packaged_task/uses_allocator.cc: Likewise.
2296
2297 2019-05-23  Hans-Peter Nilsson  <hp@axis.com>
2298
2299         * testsuite/26_numerics/random/poisson_distribution/operators/values.cc:
2300         Don't run the libstdc++/83237 part on simulator targets.
2301
2302 2019-05-23  Jonathan Wakely  <jwakely@redhat.com>
2303
2304         * doc/xml/manual/status_cxx2017.xml: Add feature test macro for
2305         P0040R3.
2306         * doc/html/*: Regenerate.
2307
2308         * include/experimental/any (__any_caster): Use RTTI if comparing
2309         addresses fails, to support non-unique addresses in shared libraries.
2310         * include/std/any (__any_caster): Likewise.
2311
2312         PR libstdc++/90220
2313         * include/experimental/any (__any_caster): Constrain to only be
2314         callable for object types. Use remove_cv_t instead of decay_t.
2315         If the type decays or isn't copy constructible, compare the manager
2316         function to a dummy specialization.
2317         (__any_caster): Add overload constrained for non-object types.
2318         (any::_Manager_internal<_Op>): Add dummy specialization.
2319         * testsuite/experimental/any/misc/any_cast.cc: Test function types
2320         and array types.
2321
2322 2019-05-22  Jonathan Wakely  <jwakely@redhat.com>
2323
2324         PR libstdc++/90557
2325         * src/c++17/fs_path.cc (path::_List::operator=(const _List&)): Fix
2326         reversed arguments to uninitialized_copy_n.
2327         * testsuite/27_io/filesystem/path/assign/copy.cc: Check that source
2328         is unchanged by copy assignment.
2329         * testsuite/util/testsuite_fs.h (compare_paths): Use std::equal to
2330         compare path components.
2331
2332         PR libstdc++/77691
2333         * include/experimental/memory_resource: Add system header pragma and
2334         do not define anything unless compiled as C++14 or later.
2335         (__resource_adaptor_common::__guaranteed_alignment): Remove.
2336         (__resource_adaptor_imp::do_allocate): If the requested alignment
2337         is a fundamental alignment then either allocate directly from _M_alloc
2338         or call the new _M_allocate function.
2339         (__resource_adaptor_imp::do_deallocate): Likewise for deallocation.
2340         (__resource_adaptor_imp::_M_allocate): New function that uses a copy
2341         of the allocator rebound to a POD type with the specified alignment.
2342         (__resource_adaptor_imp::_M_deallocate): Likewise for deallocation.
2343         * testsuite/experimental/memory_resource/new_delete_resource.cc:
2344         Adjust expected allocation sizes.
2345         * testsuite/experimental/memory_resource/resource_adaptor.cc: Remove
2346         xfail for Solaris x86.
2347
2348 2019-05-21  Thomas Rodgers  <trodgers@redhat.com>
2349
2350         LWG 3062 - Unnecessary decay_t in is_execution_policy_v
2351         * include/pstl/execution_defs.h (__enable_if_execution_policy):
2352         Use std::__remove_cvref_t when building with GCC.
2353
2354 2019-05-21  Jonathan Wakely  <jwakely@redhat.com>
2355
2356         PR libstdc++/90252
2357         * testsuite/lib/libstdc++.exp (check_effective_target_tbb-backend):
2358         Use "additional_flags" to pass -ltbb to v3_target_compile command.
2359         Use check_v3_target_prop_cached to cache the result of the test.
2360
2361         * doc/xml/manual/shared_ptr.xml: Fix names of lock policy constants.
2362
2363 2019-05-20  Thomas Rodgers  <trodgers@redhat.com>
2364
2365         PR libstdc++/90252
2366         * testsuite/lib/libstdc++.exp (check_effective_target_tbb-backend):
2367         Changed v3_target_compile check from preprocess to executable.
2368         Added "-ltbb" to v3_target_compile flags.
2369
2370 2019-05-20  Thomas Rodgers  <trodgers@redhat.com>
2371
2372         * testsuite/lib/libstdc++.exp (check_effective_target_tbb-backend):
2373         Add check for Thread Building Blocks 2018 or later.
2374
2375 2019-05-20  Jonathan Wakely  <jwakely@redhat.com>
2376
2377         * testsuite/experimental/names.cc: Only include Networking TS headers
2378         on targets with the necessary Gthreads support.
2379
2380 2019-05-20  Marek Polacek  <polacek@redhat.com>
2381
2382         CWG 2094 - volatile scalars are trivially copyable.
2383         PR c++/85679
2384         * testsuite/20_util/is_trivially_copyable/value.cc: Change the expected
2385         result for volatile int.
2386
2387 2019-05-20  Jonathan Wakely  <jwakely@redhat.com>
2388
2389         * testsuite/17_intro/names.cc: Do not check 'ptr' on Solaris.
2390         * testsuite/experimental/names.cc: Include <experimental/filesystem>
2391         conditionally.
2392
2393         PR c++/90532 Ensure __is_constructible(T[]) is false
2394         * include/std/type_traits (__do_is_default_constructible_impl)
2395         (__is_default_constructible_atom, __is_default_constructible_safe):
2396         Remove.
2397         (is_default_constructible): Use is_constructible.
2398         * testsuite/20_util/is_constructible/value.cc: Check int[] case.
2399         * testsuite/20_util/is_default_constructible/value.cc: Likewise.
2400         * testsuite/20_util/is_trivially_constructible/value.cc: Likewise.
2401         * testsuite/20_util/is_trivially_default_constructible/value.cc:
2402         Likewise.
2403
2404 2019-05-20  Pádraig Brady  <pbrady@fb.com>
2405
2406         * libstdc++-v3/include/ext/new_allocator.h (deallocate): Pass the size
2407         to the deallocator with -fsized-deallocation.
2408
2409 2019-05-20  Jonathan Wakely  <jwakely@redhat.com>
2410
2411         * testsuite/experimental/memory_resource/new_delete_resource.cc: Fix
2412         test by passing correct alignment to deallocate function.
2413
2414 2019-05-18  Jonathan Wakely  <jwakely@redhat.com>
2415
2416         PR libstdc++/90520
2417         * python/libstdcxx/v6/printers.py (UniquePointerPrinter.__init__):
2418         Raise exception if unique_ptr tuple member has unknown structure.
2419         * python/libstdcxx/v6/xmethods.py (UniquePtrGetWorker.__call__):
2420         Adjust worker to support new __uniq_ptr_data base class. Do not
2421         assume field called _M_head_impl is the first tuple element.
2422
2423 2019-05-17  François Dumont  <fdumont@gcc.gnu.org>
2424
2425         * include/bits/stl_deque.h
2426         (_Deque_iterator<>::__ptr_to): Remove, use std::__ptr_rebind.
2427         (_Deque_base(_Deque_base&&, const allocator_type&)): New.
2428         (_Deque_base::_Deque_impl_data): New.
2429         (_Deque_base::_Deque_impl): Inherit latter.
2430         (_Deque_base::_Deque_impl::_M_swap_data): Move...
2431         (_Deque_base::_Deque_impl_data::_M_swap_data): ... here.
2432         (_Deque_base::_Deque_impl()): Add noexcept qualification.
2433         (_Deque_base::_Deque_impl(_Deque_impl&&, _Tp_alloc_type&&)): New.
2434         (_Deque_base::_Deque_impl::_M_get_Tp_allocator()): Remove static_cast.
2435         (deque<>::deque()): Default.
2436         (deque<>::deque(deque&&)): Default.
2437         (deque<>::deque(deque&&, const allocator_type&, false_type)): New.
2438         (deque<>::deque(deque&&, const allocator_type&, true_type)): New.
2439         (deque<>::deque(deque&&, const allocator_type&)): Delegate to latters.
2440         (deque<>::deque<_It>(_It, _It, const allocator_type&)): Use
2441         _M_range_initialize.
2442         (deque<>::assign<_It>(_It, _It)): Use _M_assign_aux.
2443         (deque<>::resize(size_type, const value_type&)): Share a single
2444         implementation.
2445         (deque<>::insert<_It>(const_iterator, _It, _It)): Use
2446         _M_range_insert_aux.
2447         [__cplusplus >= 201103L](_M_initialize_dispatch): Remove.
2448         [__cplusplus >= 201103L](_M_assign_dispatch): Remove.
2449         [__cplusplus >= 201103L](_M_insert_dispatch): Remove.
2450         * testsuite/23_containers/deque/allocator/default_init.cc: New.
2451
2452 2019-05-17  Jonathan Wakely  <jwakely@redhat.com>
2453
2454         PR libstdc++/90246
2455         * include/std/variant (holds_alternative, get, get_if): Improve
2456         static assertion messages.
2457         (bad_variant_access::bad_variant_access()): Change default message.
2458         (__throw_bad_variant_access(bool)): New overload.
2459         (get): Use new overload.
2460         (visit, visit<R>): Improve exception message.
2461
2462         * testsuite/20_util/variant/compile.cc: Fix narrowing test for ILP32
2463         targets. Add more cases from P0608R3.
2464         * testsuite/20_util/variant/run.cc: Add more cases from P0608R3.
2465
2466         * include/bits/random.h (seed_seq::param): Fix non-reserved name.
2467         * include/experimental/type_traits (is_detected_exact)
2468         (is_detected_exact_v): Likewise.
2469         * include/pstl/execution_defs.h (is_execution_policy)
2470         (is_execution_policy_v, __enable_if_execution_policy): Likewise.
2471         * include/pstl/execution_impl.h (__policy_traits): Likewise.
2472         * testsuite/17_intro/names.cc: Check for more non-reserved names.
2473         * testsuite/experimental/names.cc: New test.
2474
2475         PR libstdc++/85965
2476         * include/bits/hashtable.h (_Hashtable::~_Hashtable()): Remove static
2477         assertions from the destructor.
2478         * include/bits/hashtable_policy.h (_Hash_code_base::_M_hash_code):
2479         Move static_assert for hash function to here.
2480         (_Hash_table_base::_M_equals): Move static_assert for equality
2481         predicate to here.
2482         * include/bits/stl_tree.h (_Rb_tree::_S_value(_Const_Link_type)):
2483         Remove.
2484         (_Rb_tree::_S_key(_Const_Link_type)): Move assertions here. Access
2485         the value directly instead of calling _S_value.
2486         (_Rb_tree::_S_value(_Const_Base_ptr)): Remove.
2487         (_Rb_tree::_S_key(_Const_Base_ptr)): Do downcast and forward to
2488         _S_key(_Const_Link_type).
2489         * testsuite/23_containers/set/85965.cc: Check construction,
2490         destruction, assignment and size() do not trigger the assertions.
2491         * testsuite/23_containers/unordered_set/85965.cc: Likewise.
2492         * testsuite/23_containers/map/48101_neg.cc: Call find and adjust
2493         expected errors.
2494         * testsuite/23_containers/multimap/48101_neg.cc: Likewise.
2495         * testsuite/23_containers/multiset/48101_neg.cc: Likewise.
2496         * testsuite/23_containers/set/48101_neg.cc: Likewise.
2497         * testsuite/23_containers/unordered_map/48101_neg.cc: Likewise.
2498         * testsuite/23_containers/unordered_multimap/48101_neg.cc: Likewise.
2499         * testsuite/23_containers/unordered_multiset/48101_neg.cc: Likewise.
2500         * testsuite/23_containers/unordered_set/48101_neg.cc: Likewise.
2501
2502         * include/bits/invoke.h [__cplusplus < 201703L] (__invoke_r<void>):
2503         Use _GLIBCXX14_CONSTEXPR because void functions cannot be constexpr
2504         in C++11.
2505
2506         * doc/xml/manual/status_cxx2020.xml: Update P0608R3, P0777R1, and
2507         P1165R1 entries.
2508         * doc/html/*: Regenerate.
2509         * include/std/tuple (make_from_tuple): Use remove_reference_t instead
2510         of decay_t (P0777R1).
2511
2512 2019-05-17  François Dumont  <fdumont@gcc.gnu.org>
2513
2514         Move from state of allocators (LWG2593)
2515         * include/bits/stl_deque.h
2516         (_Deque_base(_Deque_base&&, false_type)): Remove.
2517         (_Deque_base(_Deque_base&&, true_type)): Remove.
2518         (_Deque_base(_Deque_base&&)): Adapt.
2519         (_Deque_base::_M_move_impl()): Remove.
2520         * testsuite/util/testsuite_allocator.h
2521         (propagating_allocator(propagating_allocator&&)): Preserve move from
2522         state.
2523         * testsuite/23_containers/deque/allocator/move_assign.cc (test02):
2524         Adapt.
2525         * testsuite/23_containers/forward_list/allocator/move_assign.cc (test02):
2526         Adapt.
2527         * testsuite/23_containers/list/allocator/move_assign.cc (test02): Adapt.
2528         * testsuite/23_containers/map/allocator/move_assign.cc (test02): Adapt.
2529         * testsuite/23_containers/multimap/allocator/move_assign.cc (test02):
2530         Adapt.
2531         * testsuite/23_containers/multiset/allocator/move_assign.cc (test02):
2532         Adapt.
2533         * testsuite/23_containers/set/allocator/move_assign.cc (test02): Adapt.
2534         * testsuite/23_containers/unordered_map/allocator/move_assign.cc
2535         (test02): Adapt.
2536         * testsuite/23_containers/unordered_multimap/allocator/move_assign.cc
2537         (test02): Adapt.
2538         * testsuite/23_containers/unordered_multiset/allocator/move_assign.cc
2539         (test02): Adapt.
2540         * testsuite/23_containers/unordered_set/allocator/move_assign.cc
2541         (test02): Adapt.
2542         * testsuite/23_containers/vector/allocator/move_assign.cc (test02):
2543         Adapt.
2544         * testsuite/23_containers/vector/bool/allocator/move_assign.cc (test02):
2545         Adapt.
2546         * testsuite/21_strings/basic_string/allocator/char/move_assign.cc
2547         (test02): Adapt.
2548         * testsuite/21_strings/basic_string/allocator/wchar_t/move_assign.cc
2549         (test02): Adapt.
2550
2551 2019-05-16  Jonathan Wakely  <jwakely@redhat.com>
2552
2553         * src/c++17/fs_ops.cc (absolute(const path&, error_code&))
2554         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Remove bogus assertion.
2555
2556         * include/std/variant (__overload_set): Remove.
2557         (_Arr): New helper.
2558         (_Build_FUN): New class template to define a single FUN overload,
2559         with specializations to prevent unwanted conversions, as per P0608R3.
2560         (_Build_FUNs): New class template to build an overload set of FUN.
2561         (_FUN_type): New alias template to perform overload resolution.
2562         (__accepted_type): Use integer_constant base for failure case. Use
2563         _FUN_type for successful case.
2564         (variant::__accepted_index): Use _Tp instead of _Tp&&.
2565         (variant::variant(_Tp&&)): Likewise.
2566         (variant::operator=(_Tp&&)): Likewise.
2567
2568         * include/std/variant (_Variant_storage<false, _Types...>::_M_reset):
2569         Replace raw visitation with a runtime check for the valueless state
2570         and a non-raw visitor.
2571         (_Variant_storage<false, _Types...>::_M_reset_impl): Remove.
2572         (variant::index()): Remove branch.
2573         (variant::swap(variant&)): Use valueless_by_exception() instead of
2574         comparing the index to variant_npos, and add likelihood attribute.
2575
2576         * include/bits/hashtable_policy.h (_Equal_helper): Remove.
2577         (_Hashtable_base::_Equal_hash_code): Define new class template.
2578         (_Hashtable_base::_M_equals): Use _Equal_hash_code instead of
2579         _Equal_helper.
2580
2581         * include/bits/hashtable_policy.h (_Hashtable_ebo_helper::_S_get):
2582         Replace with _M_get non-static member function.
2583         (_Hashtable_ebo_helper::_S_cget): Replace with _M_cget non-static
2584         member function.
2585         (_Hash_code_base, _Local_iterator_base, _Hashtable_base):
2586         (_Hashtable_alloc): Adjust to use non-static members of EBO helper.
2587
2588         * include/bits/hashtable_policy.h (_Hash_code_base::_M_swap): Use
2589         _S_get accessors for members in EBO helpers.
2590         (_Hash_code_base::_M_extract(), _Hash_code_base::_M_ranged_hash())
2591         (_Hash_code_base::_M_h1(), _Hash_code_base::_M_h2()): Remove non-const
2592         overloads.
2593         (_Hashtable_base::_M_swap): Use _S_get accessors for members in EBO
2594         helpers.
2595         (_Hashtable_base::_M_eq()): Remove non-const overload.
2596
2597 2019-05-15  Jonathan Wakely  <jwakely@redhat.com>
2598
2599         * include/std/variant (visit, visit<R>): Qualify calls to __do_visit.
2600
2601 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
2602
2603         * testsuite/util/testsuite_allocator.h (NullablePointer::operator bool):
2604         Fix return value.
2605
2606 2019-05-14  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
2607
2608         * config/os/solaris/solaris2.10: Move to ...
2609         * config/os/solaris: ... this.
2610         * configure.host (os_include_dir): Adapt.
2611         (abi_baseline_pair): Remove Solaris 10 handling.
2612         * config/abi/post/i386-solaris2.10: Remove.
2613         * config/abi/post/sparc-solaris2.10: Remove.
2614         * config/abi/post/i386-solaris2.11: Rename to ...
2615         * config/abi/post/i386-solaris: ... this.
2616         * config/abi/post/sparc-solaris2.11: Rename to ...
2617         * config/abi/post/sparc-solaris: ... this.
2618
2619         * libsupc++/new_opa.cc [_GLIBCXX_HAVE_MEMALIGN] [__sun]: Remove
2620         workaround.
2621
2622         * testsuite/ext/enc_filebuf/char/13598.cc: Remove *-*-solaris2.10
2623         xfail.
2624
2625 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
2626
2627         * include/std/variant (__visit_with_index): Remove typedef.
2628         (__deduce_visit_result): New tag type.
2629         (__raw_visit, __raw_idx_visit): New helper functions for "raw"
2630         visitation of possibly-valueless variants, forwarding to __do_visit
2631         with the relevant tag type.
2632         (_Variant_storage<false, _Types...>::_M_reset_impl): Use __raw_visit
2633         and make lambda return void.
2634         (__variant_construct): Likewise.
2635         (_Copy_assign_base::operator=, _Move_assign_base::operator=): Use
2636         __raw_idx_visit and make lambda return void.
2637         (_Multi_array::__untag_result): Add metafunction to check the function
2638         pointer type for a tag type that dictates the kind of visitation.
2639         (_Multi_array<_Ret(*)(_Visitor, _Variants...), __first, __rest...>):
2640         Use decltype(auto) instead of tagged function pointer type.
2641         (__gen_vtable_impl): Remove bool non-type parameter and unused
2642         _Variant_tuple parameter.
2643         (__gen_vtable_impl::__visit_invoke_impl): Remove.
2644         (__gen_vtable_impl::__do_visit_invoke): Remove.
2645         (__gen_vtable_impl::__do_visit_invoke_r): Remove.
2646         (__gen_vtable_impl::__visit_invoke): Use if-constexpr and __invoke_r
2647         for the visit<R> case, rather than dispatching to separate functions.
2648         (_VARIANT_RELATION_FUNCTION_TEMPLATE): Use __raw_idx_visit and make
2649         lambda return void.
2650         (variant::swap): Likewise.
2651         (__do_visit): Replace two non-type template parameters with a single
2652         type parameter, so that the caller must specify the visitor's return
2653         type (or one of the tag types).
2654         (visit): Deduce a return type from the visitor and use the
2655         __deduce_visit_result tag to enforce that all overloads return the
2656         same type.
2657         (visit<R>): Call __do_visit<R> with explicit result type.
2658         (__variant_hash_call_base_impl::operator()): Use __raw_visit and make
2659         lambda return void.
2660
2661 2019-05-14  Nina Dinka Ranns  <dinka.ranns@gmail.com>
2662
2663         nonesuch is insufficiently useless (lwg2996)
2664         * include/std/type_traits (struct __nonesuch): Added private base
2665         class to make __nonesuch not an aggregate and removed deleted default
2666         constructor.
2667         * include/bits/stl_pair.h (struct __nonesuch_no_braces): Removed.
2668         (operator=(const pair&)): Use __nonesuch instead of
2669         __nonesuch_no_braces.
2670         (operator=(pair&&)): Likewise
2671         * include/std/tuple (operator=(const tuple&)): Use __nonesuch instead
2672         of __nonesuch_no_braces.
2673         (operator=(tuple&&)): Likewise
2674         * include/experimental/type_traits (struct nonesuch): Added private
2675         base class to make nonesuch not an aggregate and removed deleted
2676         default constructor.
2677         * testsuite/20_util/nonesuch/nonesuch.cc: New.
2678         * testsuite/experimental/type_traits/nonesuch.cc: New.
2679
2680 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
2681
2682         * include/bits/std_function.h (_Simple_type_wrapper): Remove.
2683         (_Function_handler): Remove partial specializations for void return
2684         types and pointers to member.
2685         (_Function_handler::_M_manager): Adapt to removal of
2686         _Simple_type_wrapper.
2687         (_Function_handler::_M_invoke): Use __invoke_r instead of __invoke.
2688         * include/std/functional (_Bind_result::__enable_if_void)
2689         (_Bind_result::__disable_if_void): Remove sfinae helpers.
2690         (_Bind_result::__call): Use __invoke_r and remove overloads for void
2691         return types.
2692         * include/std/future (__future_base::_Task_state::_M_run)
2693         (__future_base::_Task_state::_M_run_delayed): Use __invoke_r and
2694         change return type of lambda expressions.
2695
2696         * include/bits/invoke.h (__invoke_r): Define new function implementing
2697         the INVOKE<R> pseudo-function.
2698         * testsuite/20_util/function_objects/invoke/1.cc: Add more tests.
2699         * testsuite/20_util/function_objects/invoke/2.cc: New test.
2700
2701         * include/std/type_traits (__is_nt_convertible_helper): Define it
2702         unconditionally, not only for C++20.
2703         (__is_nothrow_convertible): Define internal trait for use in C++11.
2704         (__is_nt_invocable_impl: Fix by using __is_nothrow_convertible.
2705         (is_invocable_r_v, is_nothrow_invocable_r_v): Add missing parameter.
2706         * testsuite/20_util/is_nothrow_convertible/value_ext.cc: New test.
2707         * testsuite/20_util/is_nothrow_convertible/value.cc: Check with type
2708         that has nothrow explicit conversion but potentially-throwing implicit
2709         conversion.
2710         * testsuite/20_util/is_nothrow_invocable/value.cc: Likewise.
2711         * testsuite/20_util/is_nothrow_invocable/value_ext.cc: Fix helper
2712         function to only consider implicit conversions.
2713         * testsuite/20_util/tuple/cons/noexcept_specs.cc: Add comment.
2714
2715         * include/std/iterator: Include <iosfwd> instead of <istream> and
2716         <ostream>.
2717
2718         * include/bits/stl_tree.h (_Rb_tree::erase(const Key*, const Key*)):
2719         Remove unused, non-standard function.
2720
2721         * include/bits/regex.h (match_results::max_size()): Adjust return
2722         value to account for prefix/suffix/unmatched subs.
2723         (match_results::_M_resize(unsigned int)): Use _Base_type::assign to
2724         reset the contained sub matches.
2725         (match_results::_M_establish_failed_match(_Bi_iter)): Add new member
2726         function to set result state following a failed match.
2727         * include/bits/regex.tcc (__regex_algo_impl): Remove loop to set
2728         sub_match states after _M_resize. Use _M_establish_failed_match.
2729
2730         PR libstdc++/69724
2731         * include/std/thread (thread::_State_impl, thread::_S_make_state):
2732         Replace single _Callable parameter with variadic _Args pack, to
2733         forward them directly to the tuple of decayed copies.
2734         * testsuite/30_threads/thread/cons/69724.cc: New test.
2735
2736 2019-05-14  Nina Dinka Ranns  <dinka.ranns@gmail.com>
2737
2738         Inconsistency wrt Allocators in basic_string assignment (LWG2579)
2739         * include/bits/basic_string.h: (operator=(const basic_string&):
2740         Move allocator decision to assign.
2741         (assign(const basic_string&)): Move allocator decision here.
2742         * testsuite/21_strings/basic_string/allocator/char/copy_assign.cc:
2743         Add tests.
2744         * testsuite/21_strings/basic_string/allocator/wchar_t/copy_assign.cc:
2745         Add tests.
2746
2747 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
2748
2749         * testsuite/util/testsuite_allocator.h (memory_resource)
2750         (default_resource_mgr): Fix indentation.
2751
2752         * testsuite/20_util/allocator_traits/members/allocate_hint_nonpod.cc:
2753         Use operator-> to access raw pointer member.
2754         * testsuite/23_containers/vector/59829.cc: Likewise.
2755         * testsuite/23_containers/vector/bool/80893.cc: Likewise.
2756         * testsuite/libstdc++-prettyprinters/cxx11.cc: Use NullablePointer.
2757         * testsuite/util/testsuite_allocator.h (NullablePointer): New utility
2758         for tests.
2759         (PointerBase, PointerBase_void): Derive from NullablePointer and use
2760         its constructors and equality operators. Change converting
2761         constructors to use operator-> to access private member of the other
2762         pointer type.
2763         (PointerBase_void::operator->()): Add, for access to private member.
2764         (operator-(PointerBase, PointerBase)): Change to hidden friend.
2765         (operator==(PointerBase, PointerBase)): Remove.
2766         (operator!=(PointerBase, PointerBase)): Remove.
2767
2768         * python/libstdcxx/v6/printers.py (UniquePointerPrinter.__init__): Do
2769         not assume field called _M_head_impl is the first tuple element.
2770         * testsuite/libstdc++-prettyprinters/compat.cc: Make tuple
2771         implementation more accurate.
2772         * testsuite/libstdc++-prettyprinters/cxx11.cc: Check unique_ptr with
2773         empty pointer type and non-empty deleter.
2774
2775         LWG 2899 - Make is_move_constructible correct for unique_ptr
2776         * include/bits/unique_ptr.h (__uniq_ptr_impl): Add move constructor,
2777         move assignment operator.
2778         (__uniq_ptr_impl::release(), __uniq_ptr_impl::reset(pointer)): Add.
2779         (__uniq_ptr_data): New class template with conditionally deleted
2780         special members.
2781         (unique_ptr, unique_ptr<T[], D>): Change type of data member from
2782         __uniq_ptr_impl<T, D> to __uniq_ptr_data<T, D>. Define move
2783         constructor and move assignment operator as defaulted.
2784         (unique_ptr::release(), unique_ptr<T[], D>::release()): Forward to
2785         __uniq_ptr_impl::release().
2786         (unique_ptr::reset(pointer), unique_ptr<T[], D>::reset<U>(U)): Forward
2787         to __uniq_ptr_impl::reset(pointer).
2788         * python/libstdcxx/v6/printers.py (UniquePointerPrinter.__init__):
2789         Check for new __uniq_ptr_data type.
2790         * testsuite/20_util/unique_ptr/dr2899.cc: New test.
2791
2792 2019-05-13  Jonathan Wakely  <jwakely@redhat.com>
2793
2794         PR libstdc++/90454.cc path construction from void*
2795         * include/bits/fs_path.h (path::_Path): Use remove_pointer so that
2796         pointers to void are rejected as well as void.
2797         * include/experimental/bits/fs_path.h (path::_Path): Likewise.
2798         * testsuite/27_io/filesystem/path/construct/80762.cc: Also check
2799         pointers to void.
2800         * testsuite/experimental/filesystem/path/construct/80762.cc: Likewise.
2801
2802         * doc/xml/manual/policy_data_structures.xml: Comment out stray
2803         <remark> elements. Fix formatting of bibliography references.
2804
2805 2019-05-13  Edward Smith-Rowland  <3dw4rd@verizon.net>
2806
2807         * doc/xml/manual/status_cxx2020.xml: Document P0811R3 status.
2808
2809 2019-05-13  Jonathan Wakely  <jwakely@redhat.com>
2810
2811         Remove Profile Mode, deprecated since 7.1.0
2812         * doc/Makefile.am: Remove XML file for profile mode docs.
2813         * doc/Makefile.in: Regenerate.
2814         * doc/xml/authors.xml: Remove authors of profile mode docs.
2815         * doc/xml/manual/appendix_contributing.xml: Remove mention of profile
2816         mode.
2817         * doc/xml/manual/debug.xml: Likewise.
2818         * doc/xml/manual/evolution.xml: Document removal of profile mode.
2819         * doc/xml/manual/profile_mode.xml: Remove profile mode docs.
2820         * doc/xml/manual/spine.xml: Remove profile mode author credit.
2821         * doc/xml/manual/test.xml: Remove docs for dg-require-profile-mode
2822         directive.
2823         * doc/xml/manual/using.xml: Remove docs for profile mode headers and
2824         macro.
2825         * doc/html/*: Regenerate.
2826         * include/Makefile.am: Remove profile mode headers.
2827         * include/Makefile.in: Regenerate.
2828         * include/bits/c++config (std::__profile): Remove namespace.
2829         [_GLIBCXX_PROFILE]: Remove checks for macro.
2830         * include/profile/array: Remove.
2831         * include/profile/base.h: Remove.
2832         * include/profile/bitset: Remove.
2833         * include/profile/deque: Remove.
2834         * include/profile/forward_list: Remove.
2835         * include/profile/impl/profiler.h: Remove.
2836         * include/profile/impl/profiler_algos.h: Remove.
2837         * include/profile/impl/profiler_container_size.h: Remove.
2838         * include/profile/impl/profiler_hash_func.h: Remove.
2839         * include/profile/impl/profiler_hashtable_size.h: Remove.
2840         * include/profile/impl/profiler_list_to_slist.h: Remove.
2841         * include/profile/impl/profiler_list_to_vector.h: Remove.
2842         * include/profile/impl/profiler_map_to_unordered_map.h: Remove.
2843         * include/profile/impl/profiler_node.h: Remove.
2844         * include/profile/impl/profiler_state.h: Remove.
2845         * include/profile/impl/profiler_trace.h: Remove.
2846         * include/profile/impl/profiler_vector_size.h: Remove.
2847         * include/profile/impl/profiler_vector_to_list.h: Remove.
2848         * include/profile/iterator_tracker.h: Remove.
2849         * include/profile/list: Remove.
2850         * include/profile/map: Remove.
2851         * include/profile/map.h: Remove.
2852         * include/profile/multimap.h: Remove.
2853         * include/profile/multiset.h: Remove.
2854         * include/profile/ordered_base.h: Remove.
2855         * include/profile/set: Remove.
2856         * include/profile/set.h: Remove.
2857         * include/profile/unordered_base.h: Remove.
2858         * include/profile/unordered_map: Remove.
2859         * include/profile/unordered_set: Remove.
2860         * include/profile/vector: Remove.
2861         * scripts/run_doxygen: Do not process profile mode headers.
2862         * testsuite/23_containers/array/element_access/60497.cc: Don't use
2863         profile mode type.
2864         * testsuite/23_containers/array/specialized_algorithms/swap_cxx17.cc:
2865         Remove dg-skip-if for profile mode.
2866         * testsuite/23_containers/forward_list/capacity/1.cc: Remove
2867         preprocessor check for profile mode.
2868         * testsuite/23_containers/list/capacity/29134.cc: Likewise.
2869         * testsuite/23_containers/map/modifiers/extract.cc: Remove dg-skip-if
2870         for profile mode.
2871         * testsuite/23_containers/map/modifiers/insert_or_assign/1.cc:
2872         Likewise.
2873         * testsuite/23_containers/map/modifiers/try_emplace/1.cc: Likewise.
2874         * testsuite/23_containers/multimap/modifiers/extract.cc: Likewise.
2875         * testsuite/23_containers/multiset/modifiers/extract.cc: Likewise.
2876         * testsuite/23_containers/set/modifiers/extract.cc: Likewise.
2877         * testsuite/23_containers/unordered_map/modifiers/extract.cc:
2878         Likewise.
2879         * testsuite/23_containers/unordered_multimap/modifiers/extract.cc:
2880         Likewise.
2881         * testsuite/23_containers/unordered_multiset/modifiers/extract.cc:
2882         Likewise.
2883         * testsuite/23_containers/unordered_set/modifiers/extract.cc:
2884         Likewise.
2885         * testsuite/23_containers/vector/bool/capacity/29134.cc: Remove
2886         preprocessor check for profile mode.
2887         * testsuite/23_containers/vector/bool/modifiers/insert/31370.cc:
2888         Likewise.
2889         * testsuite/23_containers/vector/modifiers/insert_vs_emplace.cc:
2890         Remove dg-skip-if for profile mode.
2891         * testsuite/25_algorithms/binary_search/partitioned.cc: Likewise.
2892         * testsuite/25_algorithms/equal_range/partitioned.cc: Likewise.
2893         * testsuite/25_algorithms/lexicographical_compare/71545.cc: Likewise.
2894         * testsuite/25_algorithms/lower_bound/partitioned.cc: Likewise.
2895         * testsuite/25_algorithms/upper_bound/partitioned.cc: Likewise.
2896         * testsuite/Makefile.am: Remove profile_flags variable and
2897         * testsuite/Makefile.am: Remove profile_flags variable and
2898         check-profile target.
2899         * testsuite/Makefile.in: Regenerate.
2900         * testsuite/ext/profile/all.cc: Remove.
2901         * testsuite/ext/profile/mutex_extensions_neg.cc: Remove.
2902         * testsuite/ext/profile/profiler_algos.cc: Remove.
2903         * testsuite/ext/profile/replace_new.cc: Remove.
2904         * testsuite/ext/throw_allocator/deallocate_global.cc: Remove
2905         preprocessor check for profile mode.
2906         * testsuite/ext/throw_allocator/deallocate_local.cc: Likewise.
2907         * testsuite/lib/libstdc++.exp (check_v3_target_profile_mode): Remove.
2908         (check_v3_target_normal_mode): Do not check for profile mode macro.
2909         * testsuite/libstdc++-prettyprinters/80276.cc: Remove dg-skip-if for
2910         profile mode.
2911         * testsuite/libstdc++-prettyprinters/compat.cc: Likewise.
2912         * testsuite/libstdc++-prettyprinters/cxx11.cc: Likewise.
2913         * testsuite/libstdc++-prettyprinters/cxx17.cc: Likewise.
2914         * testsuite/libstdc++-prettyprinters/debug.cc: Likewise.
2915         * testsuite/libstdc++-prettyprinters/debug_cxx11.cc: Likewise.
2916         * testsuite/libstdc++-prettyprinters/libfundts.cc: Likewise.
2917         * testsuite/libstdc++-prettyprinters/simple.cc: Likewise.
2918         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
2919         * testsuite/libstdc++-prettyprinters/whatis.cc: Likewise.
2920         * testsuite/libstdc++-prettyprinters/whatis2.cc: Likewise.
2921
2922         Remove array_allocator extension, deprecated since 4.9.0
2923         * doc/xml/manual/allocator.xml: Remove documentation for
2924         array_allocator.
2925         * doc/xml/manual/evolution.xml: Document array_allocator removal.
2926         * doc/xml/manual/using.xml: Remove header from documentation.
2927         * include/Makefile.am: Remove <ext/array_allocator.h> header.
2928         * include/Makefile.in: Regenerate.
2929         * include/ext/array_allocator.h: Remove.
2930         * include/precompiled/extc++.h: Do not include removed header.
2931         * testsuite/ext/array_allocator/1.cc: Remove.
2932         * testsuite/ext/array_allocator/2.cc: Remove.
2933         * testsuite/ext/array_allocator/26875.cc: Remove.
2934         * testsuite/ext/array_allocator/3.cc: Remove.
2935         * testsuite/ext/array_allocator/check_deallocate_null.cc: Remove.
2936         * testsuite/ext/array_allocator/check_delete.cc: Remove.
2937         * testsuite/ext/array_allocator/check_new.cc: Remove.
2938         * testsuite/ext/array_allocator/variadic_construct.cc: Remove.
2939         * testsuite/ext/headers.cc: Do not include removed header.
2940
2941 2019-05-11  François Dumont  <fdumont@gcc.gnu.org>
2942
2943         * include/bits/stl_bvector.h
2944         (operator==(const _Bit_iterator_base&, const _Bit_iterator_base&)):
2945         Make hidden friend.
2946         (operator<(const _Bit_iterator_base&, const _Bit_iterator_base&)):
2947         Likewise.
2948         (operator!=(const _Bit_iterator_base&, const _Bit_iterator_base&)):
2949         Likewise.
2950         (operator>(const _Bit_iterator_base&, const _Bit_iterator_base&)):
2951         Likewise.
2952         (operator<=(const _Bit_iterator_base&, const _Bit_iterator_base&)):
2953         Likewise.
2954         (operator>=(const _Bit_iterator_base&, const _Bit_iterator_base&)):
2955         Likewise.
2956         (operator-(const _Bit_iterator_base&, const _Bit_iterator_base&)):
2957         Likewise.
2958         (_Bit_iterator::operator+(difference_type)): Likewise and allow NRVO
2959         copy elision.
2960         (_Bit_iterator::operator-(difference_type)): Likewise.
2961         (operator+(ptrdiff_t, const _Bit_iterator&)): Make hidden friend.
2962         (_Bit_const_iterator::operator+(difference_type)): Likewise and allow
2963         NRVO copy elision.
2964         (_Bit_const_iterator::operator-(difference_type)): Likewise.
2965         (operator+(ptrdiff_t, const _Bit_const_iterator&)): Make hidden friend.
2966
2967 2019-05-10  Jonathan Wakely  <jwakely@redhat.com>
2968
2969         PR libstdc++/81266
2970         * testsuite/util/thread/all.h: Do not use remove_pointer for
2971         std::thread::native_handle_type.
2972
2973         PR libstdc++/90397
2974         * include/std/variant (_Variant_storage<false, Types...>::_M_storage())
2975         (_Variant_storage<true, Types...>::_M_reset()))
2976         (_Variant_storage<true, Types...>::_M_storage())): Add noexcept.
2977         (__get_storage): Likewise.
2978         (variant): Add noexcept to friend declarations for __get and
2979         __get_storage.
2980
2981         PR libstdc++/90388
2982         * include/bits/unique_ptr.h (default_delete, default_delete<T[]>):
2983         Use _Require for constraints.
2984         (operator>(nullptr_t, const unique_ptr<T,D>&)): Implement exactly as
2985         per the standard.
2986         (__uniq_ptr_hash): New base class with conditionally-disabled call
2987         operator.
2988         (hash<unique_ptr<T,D>>): Derive from __uniq_ptr_hash.
2989         * testsuite/20_util/default_delete/48631_neg.cc: Adjust dg-error line.
2990         * testsuite/20_util/unique_ptr/hash/90388.cc: New test.
2991
2992         * include/bits/shared_ptr.h: Improve docs.
2993         * include/bits/shared_ptr_base.h: Likewise.
2994         * include/bits/stl_uninitialized.h: Likewise.
2995         * include/bits/unique_ptr.h: Likewise.
2996         * libsupc++/new: Likewise.
2997
2998 2019-05-09  François Dumont  <fdumont@gcc.gnu.org>
2999
3000         * include/bits/stl_deque.h
3001         (operator==(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3002         Make hidden friend.
3003         (operator!=(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3004         Likewise.
3005         (operator<(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3006         Likewise.
3007         (operator<=(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3008         Likewise.
3009         (operator>(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3010         Likewise.
3011         (operator>=(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3012         Likewise.
3013         (_Deque_iterator<>::operator+(difference_type)): Likewise and allow NRVO
3014         copy elision.
3015         (_Deque_iterator<>::operator-(difference_type)): Likewise.
3016
3017 2019-05-08  François Dumont  <fdumont@gcc.gnu.org>
3018
3019         PR libstdc++/90277
3020         * testsuite/23_containers/unordered_multiset/insert/24061-multiset.cc
3021         (test01): Reserve for number of insertions to avoid rehash during test.
3022         * testsuite/23_containers/unordered_multimap/insert/24061-multimap.cc
3023         (test01): Likewise.
3024         * testsuite/23_containers/unordered_multimap/insert/24061-multimap.cc
3025         (test01): Likewise.
3026         (test02): Likewise.
3027         (test03): Likewise.
3028
3029 2019-05-08  Jonathan Wakely  <jwakely@redhat.com>
3030
3031         * include/experimental/bits/fs_path.h: Improve docs.
3032         * include/experimental/bits/net.h: Fix wrong header name in comment.
3033         Do not document implementation details.
3034         * include/experimental/netfwd: Fix doxygen grouping.
3035
3036 2019-05-07  Jonathan Wakely  <jwakely@redhat.com>
3037
3038         * include/bits/stl_pair.h: Improve docs.
3039         * include/std/tuple: Likewise.
3040
3041         * doc/doxygen/doxygroups.cc (std::literals): Add documentation for
3042         inline namespace.
3043         * include/std/chrono: Improve docs.
3044         * include/std/ratio: Do not document implementation details.
3045         * testsuite/20_util/ratio/cons/cons_overflow_neg.cc: Adjust dg-error
3046         line numbers.
3047         * testsuite/20_util/ratio/operations/ops_overflow_neg.cc: Likewise.
3048
3049         PR libstdc++/89102
3050         * doc/xml/manual/intro.xml: Document DR 2408 and 2465 changes.
3051         * include/std/chrono (__duration_common_type_wrapper): Replace with ...
3052         (__duration_common_type): New helper.
3053         (common_type<chrono::duration<R1, P2>, chrono::duration<R2, P2>>): Use
3054         __duration_common_type.
3055         (__timepoint_common_type_wrapper): Replace with ...
3056         (__timepoint_common_type): New helper.
3057         (common_type<chrono::time_point<C, D2>, chrono::time_point<C, D2>>):
3058         Use __time_point_common_type.
3059         * include/std/type_traits (common_type<>): Define, as per LWG 2408.
3060         (__common_type_impl): If either argument is transformed by decay,
3061         use the common_type of the decayed types.
3062         (__common_type_impl<_Tp, _Up, _Tp, _Up>): If the types are already
3063         decayed, use __do_common_type_impl to get the common_type.
3064         (common_type<_Tp>): Use common_type<_Tp, _Tp>.
3065         (__do_member_type_wrapper, __member_type_wrapper)
3066         (__expanded_common_type_wrapper): Remove.
3067         (__common_type_pack, __common_type_fold): New helpers.
3068         (common_type<_Tp, _Up, _Vp...>): Use new helpers instead of
3069         __member_type_wrapper and __expanded_common_type_wrapper.
3070         * testsuite/20_util/common_type/requirements/explicit_instantiation.cc:
3071         Test zero-length template argument list.
3072         * testsuite/20_util/common_type/requirements/sfinae_friendly_1.cc:
3073         Test single argument cases and argument types that should decay.
3074         * testsuite/20_util/common_type/requirements/sfinae_friendly_2.cc:
3075         Adjust expected error.
3076         * testsuite/20_util/duration/literals/range_neg.cc: Use zero for
3077         dg-error lineno.
3078         * testsuite/20_util/duration/requirements/typedefs_neg1.cc: Likewise.
3079         * testsuite/20_util/duration/requirements/typedefs_neg2.cc: Likewise.
3080         * testsuite/20_util/duration/requirements/typedefs_neg3.cc: Likewise.
3081
3082         * doc/xml/manual/intro.xml: Fix DR 2537 and DR 2566 confusion.
3083
3084 2019-05-01  Nina Dinka Ranns  <dinka.ranns@gmail.com>
3085
3086         Make allocator propagation more consistent for
3087         operator+(basic_string) (P1165R1)
3088         * include/bits/basic_string.h
3089         (operator+(basic_string&&, basic_string&&): Changed resulting
3090         allocator to always be the one from the first parameter.
3091         * include/bits/basic_string.tcc
3092         (operator+(const _CharT*, const basic_string&)): Changed
3093         resulting allocator to be SOCCC on the second parameter's allocator.
3094         (operator+(_CharT, const basic_string&)): Likewise.
3095         * testsuite/21_strings/basic_string/allocator/char/operator_plus.cc:
3096         New.
3097         * testsuite/21_strings/basic_string/allocator/wchar_t/operator_plus.cc:
3098         New.
3099
3100 2019-05-07  Jonathan Wakely  <jwakely@redhat.com>
3101
3102         * include/bits/regex.h: Improve docs.
3103         * include/bits/regex.tcc: Do not document implementation details.
3104
3105         * testsuite/19_diagnostics/error_code/hash.cc: New test.
3106
3107 2019-05-06  François Dumont  <fdumont@gcc.gnu.org>
3108
3109         * python/libstdcxx/v6/printers.py (add_one_template_type_printer):
3110         Add type printer for container types in std::__debug namespace.
3111         * testsuite/lib/gdb-test.exp (whatis-regexp-test): New.
3112         (gdb-tests): Use distinct parameters for the type of test and use of
3113         regex.
3114         (gdb-test): Check for regex test even if 'whatis' test.
3115         * testsuite/libstdc++-prettyprinters/80276.cc: Adapt for _GLIBCXX_DEBUG
3116         mode.
3117         * testsuite/libstdc++-prettyprinters/cxx11.cc: Likewise.
3118         * testsuite/libstdc++-prettyprinters/cxx17.cc: Likewise.
3119         * testsuite/libstdc++-prettyprinters/libfundts.cc: Likewise.
3120         * testsuite/libstdc++-prettyprinters/simple.cc: Likewise.
3121         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
3122         * testsuite/libstdc++-prettyprinters/whatis.cc: Likewise.
3123         * testsuite/libstdc++-prettyprinters/whatis2.cc: Likewise.
3124
3125 2019-05-04  Jonathan Wakely  <jwakely@redhat.com>
3126
3127         * include/std/system_error (error_category): Fix comment.
3128
3129         PR libstdc++/90299
3130         * src/c++17/fs_ops.cc (absolute(const path&)): Report an error if the
3131         argument is an empty path.
3132         (absolute(const path&, error_code&)): Use invalid_argument as error
3133         code instead of no_such_file_or_directory.
3134         * testsuite/27_io/filesystem/operations/absolute.cc: Check handling
3135         of non-existent paths and empty paths with both overloads of absolute.
3136
3137         * include/std/system_error (error_category, error_code)
3138         (error_condition): Improve docs.
3139         * libsupc++/exception: Add missing @addtogroup Doxygen command.
3140         * libsupc++/exception_ptr.h (exception_ptr): Link equality operators
3141         to class documentation. Suppress documentation for implementation
3142         details.
3143         * libsupc++/nested_exception.h (throw_with_nested, rethrow_if_nested):
3144         Suppress documentation for implementation details.
3145
3146         * include/std/system_error (error_code): Remove friend declaration
3147         for hash<error_code>.
3148         (hash<error_code>::operator()): Use public member functions to access
3149         value and category.
3150         (hash<error_condition>::operator()): Use address of category, not
3151         its object representation.
3152         * src/c++11/compatibility-c++0x.cc (hash<error_code>::operator()):
3153         Use public member functions to access value and category.
3154         * testsuite/19_diagnostics/error_condition/hash.cc: New test.
3155
3156 2019-05-04  François Dumont  <fdumont@gcc.gnu.org>
3157
3158         * include/bits/hashtable.h (_Hashtable<>::rehash): Review comment.
3159         * include/bits/hashtable_policy.h
3160         (_Prime_rehash_policy::_M_bkt_for_elements): Use __builtin_ceill.
3161         (_Power2_rehash_policy::_M_bkt_for_elements): Likewise.
3162         (_Power2_rehash_policy::_M_next_bkt): Enforce returning a result not
3163         smaller than input value rather than always greater. Preserve
3164         _M_next_resize if called with 0 input. Use __builtin_floorl.
3165         (_Power2_rehash_policy::_M_need_rehash): Rehash only if number of
3166         elements + number of insertions is greater than _M_next_resize. Start
3167         with 11 buckets if not told otherwise. Use __builtin_floorl.
3168         (_Rehash_base<>::reserve): Use rehash policy _M_bkt_for_elements.
3169         * src/c++11/hashtable_c++0x.cc (_Prime_rehash_policy::_M_next_bkt):
3170         Preserve _M_next_resize if called with 0 input. Use __builtin_floorl.
3171         (_Prime_rehash_policy::_M_need_rehash): Start with 11 buckets if not
3172         told otherwise. Use __builtin_floorl.
3173         * testsuite/23_containers/unordered_set/hash_policy/71181.cc: Adapt test
3174         to also validate _Power2_rehash_policy.
3175         * testsuite/23_containers/unordered_set/hash_policy/power2_rehash.cc:
3176         Adapt.
3177
3178 2019-05-03  Jonathan Wakely  <jwakely@redhat.com>
3179
3180         PR libstdc++/61761
3181         * testsuite/26_numerics/complex/proj.cc: Don't assume <cmath> defines
3182         std::copysign.
3183
3184         PR libstdc++/52119
3185         * include/ext/numeric_traits.h (__glibcxx_min): Avoid integer
3186         overflow warning with -Wpedantic -Wsystem-headers.
3187
3188 2019-05-02  Jonathan Wakely  <jwakely@redhat.com>
3189
3190         PR libstdc++/90314
3191         * include/bits/c++config (_GLIBCXX_NOEXCEPT_IF): Use variadic macro.
3192         * include/bits/move.h (swap): Remove extra parentheses.
3193
3194         * include/experimental/bits/lfts_config.h: Improve doc markup.
3195         * include/experimental/optional: Improve docs.
3196         (_Has_addressof_mem, _Has_addressof_free, _Has_addressof)
3197         (__constexpr_addressof): Remove.
3198         (optional::operator->()): Use std::__addressof().
3199         * include/std/optional (optional::operator->()): Adjust whitespace.
3200         * testsuite/experimental/optional/constexpr/observers/2.cc: Check
3201         that operator-> is still constexpr with overloaded operator&. Change
3202         to compile-only test.
3203         * testsuite/experimental/optional/constexpr/observers/3.cc: Change to
3204         compile-only test.
3205
3206         * include/bits/shared_ptr.h: Improve docs.
3207         * include/bits/shared_ptr_atomic.h: Likewise.
3208         * include/bits/unique_ptr.h: Likewise. Adjust whitespace.
3209
3210         * include/bits/basic_string.h: Fix iterator/index confusion in
3211         Doxygen comments.
3212         * include/bits/range_access.h: Fix Doxygen warnings.
3213         * include/bits/refwrap.h: Do not document implementation details.
3214         (ref, cref): Group docs with reference_wrapper.
3215         * include/std/fstream: Fix Doxygen markup.
3216         * libsupc++/initializer_list (begin, end): Group docs with
3217         initializer_list.
3218
3219         * doc/doxygen/user.cfg.in: Set MARKDOWN_SUPPORT=YES.
3220
3221         * include/bits/unique_lock.h: Fix/improve doxygen markup.
3222         * include/std/mutex: Likewise.
3223         * include/std/shared_mutex: Likewise.
3224
3225         * include/bits/fs_dir.h: Fix/improve doxygen markup.
3226         * include/bits/fs_fwd.h: Likewise.
3227         * include/bits/fs_ops.h: Likewise.
3228         * include/bits/fs_path.h: Likewise.
3229         * include/std/filesystem: Likewise.
3230
3231         * include/experimental/bits/net.h: Fix/improve doxygen markup.
3232         * include/experimental/buffer: Likewise.
3233         * include/experimental/executor: Likewise.
3234         * include/experimental/internet: Likewise.
3235         * include/experimental/io_context: Likewise.
3236         * include/experimental/net: Likewise.
3237         * include/experimental/netfwd: Likewise.
3238         * include/experimental/socket: Likewise.
3239         * include/experimental/timer: Likewise.
3240
3241         * doc/doxygen/doxygroups.cc: Move description of experimental group
3242         here.
3243         * include/experimental/algorithm: Add to libfund-ts doc group.
3244         * include/experimental/any: Likewise. Do not document implementation
3245         details.
3246         * include/experimental/array: Add to libfund-ts doc group.
3247         * include/experimental/bits/lfts_config.h: Define libfund-ts doc group
3248         for Library Fundamentals.
3249         * include/experimental/chrono: Add to libfund-ts doc group.
3250         * include/experimental/deque: Likewise.
3251         * include/experimental/forward_list: Likewise.
3252         * include/experimental/functional: Likewise.
3253         * include/experimental/iterator: Likewise.
3254         * include/experimental/list: Likewise.
3255         * include/experimental/map: Likewise.
3256         * include/experimental/memory: Likewise.
3257         * include/experimental/memory_resource: Likewise. Improve docs.
3258         details.
3259         * include/experimental/numeric: Add to libfund-ts doc group.
3260         * include/experimental/optional: Likewise.
3261         * include/experimental/propagate_const: Likewise.
3262         * include/experimental/random: Likewise.
3263         * include/experimental/ratio: Likewise.
3264         * include/experimental/regex: Likewise.
3265         * include/experimental/set: Likewise.
3266         * include/experimental/source_location: Likewise.
3267         * include/experimental/string: Likewise.
3268         * include/experimental/string_view: Likewise.
3269         * include/experimental/system_error: Likewise.
3270         * include/experimental/tuple: Likewise.
3271         * include/experimental/type_traits: Likewise.
3272         * include/experimental/unordered_map: Likewise.
3273         * include/experimental/unordered_set: Likewise.
3274         * include/experimental/utility: Likewise.
3275         * include/experimental/vector: Likewise.
3276         * testsuite/experimental/any/misc/any_cast_neg.cc: Adjust dg-error.
3277         * testsuite/experimental/array/neg.cc: Adjust dg-error.
3278         * testsuite/experimental/propagate_const/assignment/move_neg.cc:
3279         Likewise.
3280         * testsuite/experimental/propagate_const/cons/move_neg.cc: Likewise.
3281         * testsuite/experimental/propagate_const/requirements2.cc: Likewise.
3282         * testsuite/experimental/propagate_const/requirements3.cc: Likewise.
3283         * testsuite/experimental/propagate_const/requirements4.cc: Likewise.
3284         * testsuite/experimental/propagate_const/requirements5.cc: Likewise.
3285
3286         * include/experimental/bits/fs_dir.h: Fix Doxygen markup.
3287         * include/experimental/bits/fs_fwd.h: Improve docs.
3288         * include/experimental/bits/fs_ops.h: fix Doxygen markup.
3289         * include/experimental/bits/fs_path.h: Likewise.
3290         (path, filesystem_error, u8path): Improve docs.
3291         * include/experimental/filesystem: Link to docs for TS.
3292
3293         * config/allocator/new_allocator_base.h (__allocator_base): Add
3294         workaround for Doxygen bug #6945.
3295         * include/std/memory: Improve docs. Define group for pointer safety.
3296         * include/std/scoped_allocator: Improve docs. Use "undocumented"
3297         conditional to suppress documentation for implementation details.
3298
3299         * include/bits/specfun.h: Improve docs.
3300         * include/tr1/cmath: Likewise. Fix nesting of preprocessor conditions
3301         and namespaces.
3302
3303         * doc/doxygen/doxygroups.cc (std::tr2, std::__gnu_cxx): Improve docs.
3304         (std::experimental): Add docs.
3305         * doc/doxygen/user.cfg.in (PREDEFINED): Expand macros for __cxx11
3306         namespace to nothing when generating docs.
3307         * include/bits/regex_constants.h (std::regex_constants): Improve docs.
3308         * include/std/chrono (std::chrono): Likewise.
3309         * include/std/functional (std::placeholders): Likewise.
3310         * include/std/thread (std::this_thread): Likewise.
3311
3312         * include/parallel/settings.h: Fix Doxygen markup.
3313
3314         * include/ext/pb_ds/detail/bin_search_tree_/*_imps.hpp: Do not define
3315         anything unless PB_DS_CLASS_C_DEC is defined.
3316         * include/ext/pb_ds/detail/binary_heap_/*_imps.hpp: Likewise.
3317         * include/ext/pb_ds/detail/binomial_heap_/*_imps.hpp: Likewise.
3318         * include/ext/pb_ds/detail/binomial_heap_base_/*_imps.hpp: Likewise.
3319         * include/ext/pb_ds/detail/cc_hash_table_map_/*_imps.hpp: Likewise.
3320         * include/ext/pb_ds/detail/gp_hash_table_map_/*_imps.hpp: Likewise.
3321         * include/ext/pb_ds/detail/hash_fn/*_imp.hpp: Likewise.
3322         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/*_imps.hpp:
3323         Likewise.
3324         * include/ext/pb_ds/detail/list_update_map_/*_imps.hpp: Likewise.
3325         * include/ext/pb_ds/detail/ov_tree_map_/*_imps.hpp: Likewise.
3326         * include/ext/pb_ds/detail/pairing_heap_/*_imps.hpp: Likewise.
3327         * include/ext/pb_ds/detail/pat_trie_/*_imps.hpp: Likewise.
3328         * include/ext/pb_ds/detail/rb_tree_map_/*_imps.hpp: Likewise.
3329         * include/ext/pb_ds/detail/rc_binomial_heap_/*_imps.hpp: Likewise.
3330         * include/ext/pb_ds/detail/resize_policy*_imp.hpp: Likewise.
3331         * include/ext/pb_ds/detail/splay_tree_/*_imps.hpp: Likewise.
3332         * include/ext/pb_ds/detail/thin_heap_/*_imps.hpp: Likewise.
3333         * include/ext/pb_ds/detail/trie_policy*_imp.hpp: Likewise.
3334         * include/ext/pb_ds/detail/unordered_iterator/const_iterator.hpp:
3335         Likewise.
3336         * include/ext/pb_ds/detail/unordered_iterator/iterator.hpp: Likewise.
3337         * include/ext/pb_ds/detail/unordered_iterator/point_const_iterator.hpp:
3338         Likewise.
3339         * include/ext/pb_ds/detail/unordered_iterator/point_iterator.hpp:
3340         Likewise.
3341
3342         * doc/doxygen/user.cfg.in: Regenerate with Doxygen 1.8.14 and set
3343         GROUP_NESTED_COMPOUNDS=YES and SORT_BY_SCOPE_NAME=NO. Add various
3344         _GLIBCXX_xxx macros and __attribute__(X) to PREDEFINED macros that
3345         Doxygen expands.
3346
3347 2019-05-01  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
3348
3349         * config/abi/post/i386-solaris2.10/baseline_symbols.txt: Regenerate.
3350         * config/abi/post/i386-solaris2.10/amd64/baseline_symbols.txt: Likewise.
3351         * config/abi/post/i386-solaris2.11/baseline_symbols.txt: Likewise.
3352         * config/abi/post/i386-solaris2.11/amd64/baseline_symbols.txt: Likewise.
3353         * config/abi/post/sparc-solaris2.10/baseline_symbols.txt: Likewise.
3354         * config/abi/post/sparc-solaris2.10/sparcv9/baseline_symbols.txt:
3355         Likewise.
3356         * config/abi/post/sparc-solaris2.11/baseline_symbols.txt: Likewise.
3357         * config/abi/post/sparc-solaris2.11/sparcv9/baseline_symbols.txt:
3358         Likewise.
3359
3360 2019-05-01  Jonathan Wakely  <jwakely@redhat.com>
3361
3362         PR libstdc++/61761
3363         * include/std/complex (__complex_proj): Return parameter unchanged.
3364         [_GLIBCXX_USE_C99_COMPLEX] (__complex_proj): Change overloads for
3365         floating-point types to take std::complex arguments.
3366         [_GLIBCXX_USE_C99_MATH_TR1] (__complex_proj): Add overloads for
3367         floating-point types.
3368         * testsuite/26_numerics/complex/proj.cc: New test.
3369
3370 2019-04-30  Jakub Jelinek  <jakub@redhat.com>
3371
3372         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Change _Lock_policyE2 exports
3373         to _Lock_policyE[012].
3374         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
3375
3376 2019-04-30  Jonathan Wakely  <jwakely@redhat.com>
3377
3378         * testsuite/27_io/filesystem/path/decompose/root_path.cc: Remove
3379         macros accidentally left in.
3380         * testsuite/27_io/filesystem/path/native/string-char8_t.cc: Remove
3381         unnecessary -lstdc++fs option. Fix test for mingw.
3382         * testsuite/experimental/filesystem/path/native/string-char8_t.cc:
3383         Fix test for mingw.
3384
3385 2019-04-30  Jakub Jelinek  <jakub@redhat.com>
3386
3387         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
3388
3389 2019-04-29  Jonathan Wakely  <jwakely@redhat.com>
3390
3391         * include/bits/stl_algo.h (generate_n): Adjust doxygen comment.
3392
3393         * include/bits/move.h (swap(T&, T&), swap(T (&)[N], T (&)[N])): Use
3394         _GLIBCXX_NOEXCEPT_IF to simplify declarations.
3395
3396         PR libstdc++/71312
3397         * src/c++11/shared_ptr.cc (get_mutex): Align pool mutexes to 64 bytes.
3398
3399         * include/bits/stl_bvector.h (vector<bool>::empty()): Add nodiscard
3400         attribute.
3401
3402         * include/bits/stl_iterator_base_types.h (_Iter_base): Remove unused
3403         class template and partial specialization.
3404
3405         PR libstdc++/87982
3406         * include/bits/stl_algo.h (generate_n): Convert _Size parameter to
3407         an integral type.
3408         * include/bits/stl_algobase.h (__size_to_integer): New overloaded
3409         functions to convert a value to an integral type.
3410         (__fill_n_a, __fill_n_a): Assert that __n is already an integral type.
3411         (fill_n): Convert _Size parameter to an integral type.
3412         * testsuite/25_algorithms/fill_n/87982.cc: New test.
3413         * testsuite/25_algorithms/fill_n/87982_neg.cc: New test.
3414         * testsuite/25_algorithms/fill_n/dr426.cc: New test.
3415         * testsuite/25_algorithms/generate_n/87982.cc: New test.
3416         * testsuite/25_algorithms/generate_n/87982_neg.cc: New test.
3417         * testsuite/25_algorithms/generate_n/dr426.cc: New test.
3418
3419 2019-04-28  Nina Dinka Ranns  <dinka.ranns@gmail.com>
3420
3421         Adding noexcept-specification on tuple constructors (LWG 2899)
3422         * libstdc++-v3/include/std/tuple:
3423         (tuple()): Add noexcept-specification.
3424         (tuple(const _Elements&...)): Likewise
3425         (tuple(_UElements&&...)): Likewise
3426         (tuple(const tuple<_UElements...>&)): Likewise
3427         (tuple(tuple<_UElements...>&&)): Likewise
3428         (tuple(const _T1&, const _T2&)): Likewise
3429         (tuple(_U1&&, _U2&&)): Likewise
3430         (tuple(const tuple<_U1, _U2>&): Likewise
3431         (tuple(tuple<_U1, _U2>&&): Likewise
3432         (tuple(const pair<_U1, _U2>&): Likewise
3433         (tuple(pair<_U1, _U2>&&): Likewise
3434         * libstdc++-v3/testsuite/20_util/tuple/cons/noexcept_specs.cc: New
3435
3436 2019-04-27  Marc Glisse  <marc.glisse@inria.fr>
3437
3438         PR libstdc++/87106
3439         * include/bits/stl_uninitialized.h (__relocate_object_a): Mark the
3440         arguments with __restrict.
3441
3442 2019-04-26  H.J. Lu  <hongjiu.lu@intel.com>
3443
3444         * config/abi/post/x86_64-linux-gnu/x32/baseline_symbols.txt: Updated.
3445
3446 2019-04-26  Jonathan Wakely  <jwakely@redhat.com>
3447
3448         * include/experimental/bits/fs_path.h
3449         (path::_S_convert_loc<_InputIterator>): Create const std::string to
3450         avoid redundant call to _S_convert_loc with non-const pointers.
3451
3452         * testsuite/20_util/variant/run.cc: Use a new Hashable type to test
3453         hashing, because pmr::string depends on _GLIBCXX_USE_CXX11_ABI==1.
3454         * testsuite/21_strings/basic_string/hash/hash.cc
3455         [!_GLIBCXX_USE_CXX11_ABI]: Don't test pmr strings.
3456         * testsuite/21_strings/basic_string/hash/hash_char8_t.cc
3457         [!_GLIBCXX_USE_CXX11_ABI]: Likewise.
3458
3459         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Replace wildcard that matches
3460         wstring::_M_replace_dispatch with more specific patterns.
3461         * include/bits/fs_path.h (path::_S_convert_loc<_InputIterator>):
3462         Create const std::string to avoid redundant call to _S_convert_loc
3463         with non-const pointers.
3464         * include/bits/locale_conv.h (__do_str_codecvt): Use if-constexpr to
3465         avoid unnecessary basic_string::assign instantiations.
3466
3467         * include/std/memory (__uses_alloc_args): Add string-literal to
3468         static_assert, to match the one in __uses_alloc.
3469         [__cpp_concepts] (_Std_pair): Use C++2a syntax for concept.
3470         * testsuite/20_util/polymorphic_allocator/construct_c++2a.cc: Check
3471         for recursive uses-allocator construction of nested pairs.
3472         * testsuite/20_util/scoped_allocator/construct_pair_c++2a.cc:: Add
3473         comment.
3474
3475 2019-04-26  Jakub Jelinek  <jakub@redhat.com>
3476
3477         * config/abi/post/s390x-linux-gnu/32/baseline_symbols.txt: Update.
3478         * config/abi/post/s390-linux-gnu/baseline_symbols.txt: Update.
3479         * config/abi/post/powerpc-linux-gnu/baseline_symbols.txt: Update.
3480         * config/abi/post/powerpc64-linux-gnu/32/baseline_symbols.txt: Update.
3481
3482         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
3483         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
3484         * config/abi/post/i386-linux-gnu/baseline_symbols.txt: Update.
3485         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
3486         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
3487         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
3488         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
3489
3490 2019-04-25  Jonathan Wakely  <jwakely@redhat.com>
3491
3492         PR libstdc++/90239
3493         * doc/xml/manual/status_cxx2020.xml: Amend P0591R4 status.
3494         * include/std/scoped_allocator [__cplusplus > 201703L]
3495         (scoped_allocator_adaptor::construct): Define in terms of
3496         uses_allocator_construction_args, as per P0591R4.
3497         * testsuite/20_util/scoped_allocator/construct_pair_c++2a.cc: New test.
3498         * testsuite/util/testsuite_allocator.h: Remove name of unused
3499         parameter.
3500
3501 2019-04-24  Jonathan Wakely  <jwakely@redhat.com>
3502
3503         * doc/xml/manual/status_cxx2017.xml: Document P0024R2 status.
3504         * doc/html/*: Regenerate.
3505
3506         * include/bits/fs_path.h (operator<, operator<=, operator>)
3507         (operator>=, operator==, operator!=): Make hidden friends, as per
3508         LWG 3065.
3509         * testsuite/27_io/filesystem/path/native/string-char8_t.cc: Fix
3510         string type in test.
3511         * testsuite/27_io/filesystem/path/native/string.cc: Likewise.
3512
3513         * include/std/any (any::any(ValueType&&)): Use __and_v.
3514         * include/std/numeric (midpoint(T, T, T), midpoint(T*, T*, T*)):
3515         Likewise.
3516
3517         * include/std/tuple (apply): Use remove_reference_t instead of decay_t
3518         as per P0777R1.
3519         * include/std/type_traits (__result_of_memfun): Use remove_reference
3520         instead of __remove_cvref_t and remove redundant is_same check.
3521         (__inv_unwrap): Use __remove_cvref_t instead of decay_t.
3522
3523         * include/experimental/string_view (basic_string_view::pointer)
3524         (basic_string_view::reference): Fix to refer to non-const value_type.
3525         * include/bits/basic_string.h (basic_string): Use __sv_check and
3526         __sv_limit instead of basic_string_view::_M_check and
3527         basic_string_view::_M_limit.
3528         * include/std/string_view (__sv_check, __sv_limit): New
3529         helper functions to replace basic_string_view::_M_check and
3530         basic_string_view::_M_limit.
3531         (basic_string_view): Add static assertions to enforce ill-formed
3532         requirement for traits_type::char_type from P1148R0, and to enforce
3533         required properties of char-like types.
3534         (basic_string_view::pointer, basic_string_view::reference): Fix to
3535         refer to non-const value_type.
3536         (basic_string_view::operator[], basic_string_view::at)
3537         (basic_string_view::front, basic_string_view::back)
3538         (basic_string_view::data): Use const_reference and const_pointer
3539         typedefs for return types.
3540         (basic_string_view::_M_check, basic_string_view::_M_limit): Remove.
3541         (hash<wstring_view>): Fix argument_type typedef.
3542         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/
3543         char/1.cc: Fix expected return type of basic_string_view::data().
3544         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/
3545         wchar_t/1.cc: Likewise.
3546         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/
3547         char/1.cc: Likewise.
3548         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/
3549         wchar_t/1.cc: Likewise.
3550         * testsuite/21_strings/basic_string_view/requirements/traits_neg.cc:
3551         New test.
3552         * testsuite/21_strings/basic_string_view/requirements/typedefs.cc:
3553         Check reference and pointer typedefs.
3554         * testsuite/experimental/string_view/requirements/typedefs.cc:
3555         Likewise.
3556         * testsuite/experimental/string_view/modifiers/remove_prefix/char/1.cc:
3557         Fix expected return type of basic_string_view::data().
3558         * testsuite/experimental/string_view/modifiers/remove_prefix/wchar_t/
3559         1.cc: Likewise.
3560         * testsuite/experimental/string_view/modifiers/remove_suffix/char/1.cc:
3561         Likewise.
3562         * testsuite/experimental/string_view/modifiers/remove_suffix/wchar_t/
3563         1.cc: Likewise.
3564
3565         PR libstdc++/90220
3566         * include/std/any (__any_caster): Use remove_cv_t instead of decay_t.
3567         Avoid a runtime check for types that can never be stored in std::any.
3568         * testsuite/20_util/any/misc/any_cast.cc: Test std::any_cast with
3569         array types.
3570
3571         PR libstdc++/90220 (partial)
3572         * include/std/any (any_cast<T>(any*), any_cast<T>(const any*)): Do
3573         not attempt ill-formed static_cast to pointers to non-object types.
3574         * testsuite/20_util/any/misc/any_cast.cc: Test std::any_cast with
3575         function types.
3576
3577         * testsuite/20_util/variant/run.cc: Catch exception by reference to
3578         prevent -Wcatch-value warning.
3579
3580         * include/std/variant (__variant_construct): Use template parameter
3581         type instead of equivalent decltype-specifier.
3582         (_Move_ctor_base<false, Types...>::_Move_ctor_base(_Move_ctor_base&&)):
3583         Replace forward with move.
3584         (_Move_ctor_base<false, Types...>::_M_destructive_move)
3585         (_Move_ctor_base<false, Types...>::_M_destructive_copy)
3586         (_Move_ctor_base<true, Types...>::_M_destructive_move)
3587         (_Move_ctor_base<true, Types...>::_M_destructive_copy): Only set the
3588         index after construction succeeds.
3589         (_Copy_assign_base<false, Types...>::operator=): Remove redundant
3590         if-constexpr checks that are always true. Use __remove_cvref_t instead
3591         of remove_reference so that is_nothrow_move_constructible check
3592         doesn't use a const rvalue parameter. In the potentially-throwing case
3593         construct a temporary and move assign it, as per LWG 2904.
3594         (_Move_assign_base<false, Types...>::operator=): Remove redundant
3595         if-constexpr checks that are always true. Use emplace as per LWG 2904.
3596         (variant::operator=(T&&)): Only use emplace conditionally, otherwise
3597         construct a temporary and move assign from it, as per LWG 2904.
3598         * testsuite/20_util/variant/exception_safety.cc: Check that
3599         assignment operators have strong exception safety guarantee.
3600
3601 2019-04-23  Thomas Rodgers <trodgers@redhat.com>
3602
3603         Document PSTL linker flags
3604
3605         * doc/xml/manual/using.xml: Add PSTL linker flags to table 3.1.
3606
3607 2019-04-23  Jonathan Wakely  <jwakely@redhat.com>
3608
3609         * include/std/variant (__detail::__variant::_Traits): Make
3610         _S_trivial_copy_assign depend on _S_trivial_copy_ctor and make
3611         _S_trivial_move_assign depend on _S_trivial_move_ctor, as per
3612         P0602R4.
3613         (__detail::__variant::_Copy_assign_alias): Only depend on
3614         _S_trivial_copy_assign, which subsumes _S_trivial_copy_ctor now.
3615         * testsuite/20_util/variant/compile.cc: Correct checks for trivial
3616         move assignment operators.
3617
3618         PR libstdc++/90165
3619         * include/std/variant (variant::__not_self): New helper for the
3620         is_same_v<remove_cvref_t<T>, variant>==false constraints.
3621         (variant::__to_type_impl): Remove.
3622         (variant::__to_type): Add default argument to check pack size, instead
3623         of using __to_type_impl.
3624         (variant::__accepted_type): Add default argument using __not_self.
3625         (variant::__is_in_place_tag, variant::__not_in_place_tag): New helpers
3626         for variant(T&&) constructor constraint.
3627         (variant::variant(T&&)): Use __not_in_place_tag in constraints.
3628         Extract __accepted_type into a named template parameter for reuse in
3629         other constraints and in the exception specification.
3630         (variant::variant(in_place_type_t<T>, Args&&...))
3631         (variant::variant(in_place_type_t<T>, initializer_list<U>, Args&&...))
3632         (variant::variant(in_place_index_t<T>, Args&&...))
3633         (variant::variant(in_place_index_t<T>, initializer_list<U>, Args&&...))
3634         (variant::operator=T&&)): Remove redundant && from trait arguments.
3635         * testsuite/20_util/variant/compile.cc: Check variant(T&&) constructor
3636         isn't used for in_place_type or in_place_index arguments.
3637
3638         * include/std/type_traits (unwrap_reference_t): Define for C++2a.
3639         (unwrap_ref_decay): Remove inheritance from unwrap_reference.
3640         * testsuite/20_util/unwrap_reference/1.cc: Adjust test to use alias.
3641
3642 2019-04-23  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>
3643             Bernd Edlinger  <bernd.edlinger@hotmail.de>
3644             Jakub Jelinek  <jakub@redhat.com>
3645
3646         PR target/89093
3647         * libsupc++/eh_personality.cc (PERSONALITY_FUNCTION): Add
3648         general-regs-only target attribute for ARM.
3649
3650 2019-04-23  Jonathan Wakely  <jwakely@redhat.com>
3651
3652         PR libstdc++/87431
3653         * include/bits/basic_string.h (_Never_valueless_alt): Make partial
3654         specialization also depend on is_nothrow_move_constructible.
3655         * include/std/variant (__detail::__variant::__never_valueless()):
3656         Only true if the variant would have a move assignment operator.
3657         (__detail::__variant::_Variant_storage<false, T...>::_M_valid()):
3658         Check __never_valueless<T...>().
3659         (variant::emplace): Only perform non-throwing move assignments
3660         for never-valueless alternatives if the variant has a move assignment
3661         operator.
3662         * testsuite/20_util/variant/compile.cc: Check that never-valueless
3663         types can be emplaced into non-assignable variants.
3664         * testsuite/20_util/variant/run.cc: Check that never-valueless types
3665         don't get copied when emplaced into non-assignable variants.
3666
3667         * include/std/variant (__detail::__variant::__ref_cast): Remove
3668         unused function.
3669         (__detail::__variant::_Uninitialized::_M_get)
3670         (__detail::__variant::__get)
3671         (__gen_vtable_impl::__element_by_index_or_cookie): Add noexcept.
3672
3673 2019-04-21  Iain Sandoe  <iain@sandoe.co.uk>
3674
3675         * testsuite/17_intro/headers/c++1998/charset.cc: Skip for Darwin8
3676         to Darwin10.
3677         * testsuite/17_intro/headers/c++2011/charset.cc: Likewise.
3678         * testsuite/17_intro/headers/c++2014/charset.cc: Likewise.
3679         * testsuite/17_intro/headers/c++2017/charset.cc: Likewise.
3680         * testsuite/17_intro/headers/c++2020/charset.cc: Likewise.
3681
3682 2019-04-20  Thomas Rodgers <trodgers@redhat.com>
3683
3684         Delegate PSTL configuration to pstl/pstl_config.h
3685
3686         * include/bits/c++config: Remove explicit PSTL configuration
3687         macros and use definitions from <pstl/pstl_config.h>.
3688
3689 2019-04-20  Thomas Rodgers <trodgers@redhat.com>
3690
3691         Cleanup algorithm implementations
3692         * include/pstl/glue_algorithm_impl.h (stable_sort): Forward
3693         execution policy.
3694         (mismatch): Forward execution policy.
3695         (equal): Qualify call to std::equal().
3696         (partial_sort): Forward execution policy.
3697         (inplace_merge): Forward execution policy.
3698
3699 2019-04-19  Thomas Rodgers <trodgers@redhat.com>
3700
3701         Improve implementation of parallel equal()
3702         * include/pstl/algorithm_impl.h
3703         (__internal::__brick_equal): use "4 iterator" version of
3704         std::equal().
3705         (__internal::__brick_equal): use simd for random access
3706         iterators on unsequenced execution policies.
3707         (__internal::__pattern_equal): add "4 iterator" version
3708         (__internal::__pattern_equal): dispatch to simd __brick_equal
3709         for vector-only execution policies.
3710         (__internal::__pattern_equal): dispatch to __parallel_or for
3711         parallel execution policies.
3712         * include/pstl/glue_algorithm_impl.h
3713         (std::equal): dispatch to "4 iterator" version of
3714         __internal::__pattern_equal().
3715
3716 2019-04-17  Jonathan Wakely  <jwakely@redhat.com>
3717
3718         PR libstdc++/90105
3719         * include/bits/forward_list.h (operator==): Do not use operator!= to
3720         compare elements.
3721         (forward_list<T, A>::sort(Comp)): When elements are equal take the one
3722         earlier in the list, so that sort is stable.
3723         * testsuite/23_containers/forward_list/operations/90105.cc: New test.
3724         * testsuite/23_containers/forward_list/comparable.cc: Test with
3725         types that meet the minimum EqualityComparable and LessThanComparable
3726         requirements. Remove irrelevant comment.
3727
3728         * include/std/variant (__detail::__variant::_Traits::_S_copy_assign):
3729         Do not depend on whether all alternative types are move constructible.
3730         (__detail::__variant::_Copy_assign_base::operator=): Remove cv-quals
3731         from the operand when deciding whether to perform the assignment.
3732         * testsuite/20_util/variant/compile.cc (DeletedMoves): Define type
3733         with deleted move constructor and deleted move assignment operator.
3734         (default_ctor, copy_ctor, move_ctor, copy_assign, move_assign): Check
3735         behaviour of variants with DeletedMoves as an alternative.
3736         * testsuite/20_util/variant/run.cc (DeletedMoves): Define same type.
3737         (move_ctor, move_assign): Check that moving a variant with a
3738         DeletedMoves alternative falls back to copying instead of moving.
3739
3740         * testsuite/20_util/variant/compile.cc: Remove empty string literals
3741         from static_assert declarations.
3742
3743         * testsuite/20_util/variant/compile.cc (MoveCtorOnly): Fix type to
3744         actually match its name.
3745         (MoveCtorAndSwapOnly): Define new type that adds swap to MoveCtorOnly.
3746         (test_swap()): Fix result for MoveCtorOnly and check
3747         MoveCtorAndSwapOnly.
3748
3749         * include/std/optional (optional::value_or(U&&) &&): Add missing
3750         constexpr specifier.
3751         * testsuite/20_util/optional/constexpr/observers/4.cc: Check value_or
3752         for disengaged optionals and rvalue optionals.
3753         * testsuite/20_util/optional/observers/4.cc: Likewise.
3754
3755 2019-04-12  Thomas Rodgers  <trodgers@redhat.com>
3756
3757         * include/pstl/algorithm_impl.h: Uglify identfiers.
3758         * include/pstl/numeric_impl.h:  Uglify identfiers.
3759         * include/pstl/parallel_backend_tbb.h: Uglify identfiers.
3760
3761 2019-04-11  Thomas Rodgers  <trodgers@redhat.com>
3762
3763         * include/bits/c++config:
3764         Add definition for __PSTL_ASSERT.
3765         Add definition for __PSTL_ASSERT_MSG.
3766         * include/pstl/algorithm_impl.h: Replace use of assert().
3767         * include/pstl/numeric_impl.h: Replace use of assert().
3768         * include/pstl/parallel_backend_tbb.h:
3769         Replace use of assert().
3770         Replace use of __TBB_ASSERT().
3771         * include/pstl/parallel_backend_utils.h: Replace use of assert().
3772
3773 2019-04-11  Jonathan Wakely  <jwakely@redhat.com>
3774
3775         PR libstdc++/90046
3776         * src/c++17/memory_resource.cc
3777         (monotonic_buffer_resource::_Chunk::allocate): Increase alignment if
3778         needed to allow placing a _Chunk at the end of the buffer.
3779         (monotonic_buffer_resource::_M_new_buffer): Remove static_assert.
3780
3781 2019-04-10  Jonathan Wakely  <jwakely@redhat.com>
3782
3783         * doc/xml/faq.xml: Add information about emergency EH pool.
3784         * doc/xml/manual/debug.xml: Update list of memory debugging tools.
3785         Move outdated information on mt_allocator to a separate section.
3786         * doc/xml/manual/evolution.xml: Clarify that GLIBCXX_FORCE_NEW
3787         doesn't affect the default allocator.
3788
3789         * testsuite/lib/libstdc++.exp (check_v3_target_parallel_mode): Fix
3790         typo.
3791
3792         PR libstdc++/89851
3793         * testsuite/20_util/variant/89851.cc: New test.
3794
3795 2019-04-09  Jonathan Wakely  <jwakely@redhat.com>
3796
3797         * include/std/variant: Adjust whitespace. Add comments.
3798         (_Multi_array): Leave primary template undefined.
3799         (_Multi_array<_Tp>): Define partial specialization for base case of
3800         recursion.
3801         (__gen_vtable_impl, __gen_vtable): Remove redundant && from type
3802         which is always a reference.
3803         (__gen_vtable::_S_apply()): Remove function, inline body into
3804         default member initializer.
3805         * testsuite/20_util/variant/visit.cc: Test with noncopyable types.
3806
3807         * include/std/variant (__variant_idx_cookie): Add member type.
3808         (__visitor_result_type): Remove.
3809         (__do_visit): Use invoke_result instead of __visitor_result_type.
3810         * testsuite/20_util/variant/visit.cc: New test.
3811
3812         PR libstdc++/90008
3813         * include/std/variant (_VARIANT_RELATION_FUNCTION_TEMPLATE): Remove
3814         unused capture.
3815         * testsuite/20_util/variant/90008.cc: New test.
3816
3817 2019-04-09  Thomas Rodgers  <trodgers@redhat.com>
3818
3819         * include/pstl/algorithm_impl.h: Add namespace qualification.
3820         * include/pstl/execution_defs.h: Add namespace qualification.
3821         * include/pstl/execution_impl.h: Add namespace qualification.
3822         * include/pstl/numeric_impl.h: Add namespace qualification.
3823         * include/pstl/parallel_backend_tbb.h: Add namespace qualification.
3824         * include/pstl/unseq_backend_simd.h: Add namespace qualification.
3825         * include/pstl/parallel_backend_utils.h: Include <cassert>.
3826
3827 2019-04-08  Ville Voutilainen  <ville.voutilainen@gmail.com>
3828
3829         Fix visit<R> for variant.
3830         * include/std/variant (__do_visit): Add a template parameter
3831         for enforcing same return types for visit.
3832         (__gen_vtable_impl): Likewise.
3833         (_S_apply_single_alt): Adjust.
3834         (__visit_invoke_impl): New. Handle casting to void.
3835         (__do_visit_invoke): New. Enforces same return types.
3836         (__do_visit_invoke_r): New. Converts return types.
3837         (__visit_invoke): Adjust.
3838         (__gen_vtable):  Add a template parameter for enforcing
3839         same return types for visit.
3840         * testsuite/20_util/variant/visit_r.cc: Add a test for a visitor with
3841         different return types.
3842         * testsuite/20_util/variant/visit_neg.cc: New. Ensures that
3843         visitors with different return types don't accidentally
3844         compile with regular visitation.
3845
3846 2019-04-08  Christophe Lyon  <christophe.lyon@linaro.org>
3847
3848         * testsuite/27_io/filesystem/iterators/caching.cc: Add
3849         dg-require-filesystem-ts.
3850
3851 2019-04-05  Jonathan Wakely  <jwakely@redhat.com>
3852
3853         * doc/xml/manual/status_cxx2020.xml: Update status.
3854         * include/std/variant (visit<R>): Define for C++2a (P0655R1).
3855         * testsuite/20_util/variant/visit_r.cc: New test.
3856
3857         * include/bits/fs_dir.h (directory_iterator::operator*)
3858         (directory_iterator::operator->): Add noexcept.
3859         (operator==, operator!=): Replace namespace-scope equality operators
3860         for directory iterators with hidden friends.
3861
3862         PR libstdc++/89986
3863         * config/abi/pre/gnu.ver: Add missing exports.
3864         * testsuite/27_io/filesystem/iterators/directory_iterator.cc: Test
3865         increment member.
3866
3867         * config/abi/pre/gnu.ver: Export new symbols.
3868         * include/bits/fs_dir.h (recursive_directory_iterator::options())
3869         (recursive_directory_iterator::recursion_pending())
3870         (recursive_directory_iterator::disable_recursion_pending()): Remove
3871         inline definitions. Make noexcept.
3872         (recursive_directory_iterator::depth())
3873         (recursive_directory_iterator::operator*())
3874         (recursive_directory_iterator::operator->()): Make noexcept.
3875         (recursive_directory_iterator::_M_options)
3876         (recursive_directory_iterator::_M_pending): Remove data members.
3877         * src/c++17/fs_path.cc (_Dir_stack): Add constructor and data members.
3878         (recursive_directory_iterator::recursive_directory_iterator): Remove
3879         ctor-initializer. Use new constructor for _Dir_stack.
3880         (recursive_directory_iterator::options())
3881         (recursive_directory_iterator::recursion_pending())
3882         (recursive_directory_iterator::disable_recursion_pending()): Add
3883         non-inline definitions.
3884         (recursive_directory_iterator::depth()): Make noexcept.
3885         (recursive_directory_iterator::increment(error_code&))
3886         (recursive_directory_iterator::pop(error_code&)): Adjust to new
3887         location of options and recursion_pending members.
3888         * testsuite/27_io/filesystem/iterators/recursion_pending.cc: New test.
3889         * testsuite/util/testsuite_fs.h (__gnu_test::scoped_file): Add
3890         user-declared move constructor and assignment operator, to make the
3891         type move-only.
3892
3893         * src/c++17/fs_dir.cc (_Dir::advance(bool, error_code&)): Handle
3894         d_type == DT_UNKNOWN immediately.
3895         (_Dir::should_recurse(bool, error_code&)): Remove file_type::unknown
3896         handling here.
3897         * testsuite/27_io/filesystem/iterators/caching.cc: New test.
3898
3899         * include/bits/fs_path.h (path::operator=(path&&)): Check for self
3900         assignment.
3901         * src/c++17/fs_path.cc (path::operator=(const path&)): Likewise.
3902         * testsuite/27_io/filesystem/path/assign/copy.cc: Test self
3903         assignment.
3904
3905         PR libstdc++/87431 (again)
3906         * include/bits/basic_string.h (__variant::_Never_valueless_alt):
3907         Define partial specialization for basic_string.
3908         * include/bits/shared_ptr.h (_Never_valueless_alt): Likewise for
3909         shared_ptr and weak_ptr.
3910         * include/bits/std_function.h (_Never_valueless_alt): Likewise for
3911         function.
3912         * include/bits/stl_vector.h (_Never_valueless_alt): Likewise for
3913         vector.
3914         * include/bits/unique_ptr.h (_Never_valueless_alt): Likewise for
3915         unique_ptr.
3916         * include/debug/vector (_Never_valueless_alt): Likewise for debug
3917         vector.
3918         * include/std/any (_Never_valueless_alt): Define explicit
3919         specialization for any.
3920         * include/std/variant (_Never_valueless_alt): Define primary template.
3921         (__never_valueless): Use _Never_valueless_alt instead of
3922         is_trivially_copyable.
3923         (variant::emplace<N>(Args&&...)): Add special case for non-throwing
3924         initializations to avoid try-catch overhead. Add special case for
3925         scalars produced by potentially-throwing conversions. Use
3926         _Never_valueless_alt instead of is_trivially_copyable for the
3927         remaining strong exception-safety cases.
3928         (variant::emplace<N>(initializer_list<U>, Args&&...)): Likewise.
3929         * testsuite/20_util/variant/87431.cc: Run both test functions.
3930         * testsuite/20_util/variant/exception_safety.cc: New test.
3931         * testsuite/20_util/variant/run.cc: Use pmr::string instead of string,
3932         so the variant becomes valueless.
3933
3934 2019-04-03  Jonathan Wakely  <jwakely@redhat.com>
3935
3936         PR libstdc++/85184
3937         * include/std/variant (_Copy_assign_base, _Move_assign_base, variant):
3938         Remove assertions.
3939         (variant::emplace<_Tp>): Return result of emplace<N> directly.
3940
3941         * include/std/string (__hash_string_base): New class template defining
3942         operator() for hashing strings.
3943         (hash<pmr::string>, hash<pmr::u8string>, hash<pmr::u16string>)
3944         (hash<pmr::u32string>, hash<pmr::wstring>): Define for C++17.
3945         * testsuite/21_strings/basic_string/hash/hash.cc: New test.
3946         * testsuite/21_strings/basic_string/hash/hash_char8_t.cc: New test.
3947
3948 2019-04-01  Ville Voutilainen  <ville.voutilainen@gmail.com>
3949
3950         Use single-visitation in variant assignment and swap and relops.
3951         Also use indices instead of types when checking whether
3952         variants hold the same thing.
3953         * include/std/variant (__do_visit): Add a template parameter
3954         for index visitation, invoke with indices if index visitation
3955         is used.
3956         (__variant_idx_cookie): New.
3957         (__visit_with_index): Likewise.
3958         (_Copy_assign_base::operator=): Do single-visitation with
3959         an index visitor.
3960         (_Move_assign_base::operator=): Likewise.
3961         (_Extra_visit_slot_needed): Adjust.
3962         (__visit_invoke): Call with indices if it's an index visitor.
3963         (relops): Do single-visitation with an index visitor.
3964         (swap): Likewise.
3965         (__visitor_result_type): New.
3966
3967 2019-03-30  Eric Botcazou  <ebotcazou@adacore.com>
3968
3969         * src/c++17/fs_ops.cc (fs::permissions): Use std::errc::not_supported.
3970
3971 2019-03-28  Ville Voutilainen  <ville.voutilainen@gmail.com>
3972
3973         Don't revisit a variant we are already visiting.
3974         * include/std/variant (__variant_construct_single): New.
3975         (__variant_construct): Use it.
3976         (_M_destructive_move): Likewise.
3977         (_M_destructive_copy): Likewise.
3978         (_Copy_assign_base::operator=): Adjust.
3979         (_Move_assign_base::operator=): Likewise.
3980         (swap): Likewise.
3981
3982 2019-03-26  Jonathan Wakely  <jwakely@redhat.com>
3983
3984         PR libstdc++/85965
3985         * include/bits/hashtable.h (_Hashtable): Move static assertions to
3986         destructor so they are not evaluated until the _Key type is complete.
3987         * include/bits/stl_tree.h (_Rb_tree): Likewise.
3988         * testsuite/23_containers/set/85965.cc: New test.
3989         * testsuite/23_containers/unordered_set/85965.cc: New test.
3990         * testsuite/23_containers/map/48101_neg.cc: Replace "here" errors
3991         with regexp matching the corresponding _Rb_tree specialization.
3992         * testsuite/23_containers/multimap/48101_neg.cc: Likewise.
3993         * testsuite/23_containers/multiset/48101_neg.cc: Remove "here" error.
3994         * testsuite/23_containers/set/48101_neg.cc: Likewise.
3995         * testsuite/23_containers/unordered_map/48101_neg.cc: Likewise.
3996         * testsuite/23_containers/unordered_multimap/48101_neg.cc: Likewise.
3997         * testsuite/23_containers/unordered_multiset/48101_neg.cc: Likewise.
3998         * testsuite/23_containers/unordered_set/48101_neg.cc: Likewise.
3999
4000 2019-03-26  Ville Voutilainen  <ville.voutilainen@gmail.com>
4001
4002         PR libstdc++/89825
4003         Fix based on a suggestion by Antony Polukhin.
4004         * include/std/variant (__never_valueless): New.
4005         (_M_valid): Use it.
4006         (_Extra_visit_slot_needed): New.
4007         (_Multi_array): Use it.
4008         (_S_apply_all_alts): Likewise.
4009
4010 2019-03-26  Ville Voutilainen  <ville.voutilainen@gmail.com>
4011
4012         PR libstdc++/89824
4013         Fix based on a suggestion by Antony Polukhin.
4014         * include/std/variant (__gen_vtable): Don't reserve an
4015         additional table slot, _Multi_array already does that.
4016
4017 2019-03-26  Ville Voutilainen  <ville.voutilainen@gmail.com>
4018
4019         PR libstdc++/89816
4020         Fix based on a suggestion by Antony Polukhin.
4021         * include/std/variant (__variant_construct): Capture a pointer
4022         to the storage and visit just one variant.
4023
4024 2019-03-22  Jonathan Wakely  <jwakely@redhat.com>
4025
4026         * doc/xml/manual/backwards_compatibility.xml: Remove link to
4027         Doxygen-generated pages with unstable URL.
4028         * doc/xml/manual/concurrency_extensions.xml: Likewise.
4029         * doc/xml/manual/extensions.xml: Likewise.
4030         * doc/xml/manual/parallel_mode.xml: Likewise.
4031         * doc/xml/manual/support.xml: Likewise.
4032
4033         * include/bits/stl_algobase.h (__lg): Do arithmetic on type int to
4034         avoid -Wconversion warnings.
4035
4036 2019-03-21  Thomas Rodgers  <trodgers@redhat.com>
4037
4038         * include/Makefile.am (std_header): Add ${std_srcdir}/execution.
4039         (pstl_srcdir, pstl_builddir, pstl_headers): New variables.
4040         (allstamped): Add stamp-pstl.
4041         (install-headers): Add ptsl_builddir.
4042         * include/Makefile.in: Regenerate.
4043         * include/bits/c++config: Add pstl configuration.
4044         * include/pstl/LICENSE.txt: New file.
4045         * include/pstl/algorithm_fwd.h: New file.
4046         * include/pstl/algorithm_impl.h: New file.
4047         * include/pstl/execution_defs.h: New file.
4048         * include/pstl/execution_impl.h: New file.
4049         * include/pstl/glue_algorithm_defs.h: New file.
4050         * include/pstl/glue_algorithm_impl.h: New file.
4051         * include/pstl/glue_execution_defs.h: New file.
4052         * include/pstl/glue_memory_defs.h: New file.
4053         * include/pstl/glue_memory_impl.h: New file.
4054         * include/pstl/glue_numeric_defs.h: New file.
4055         * include/pstl/glue_numeric_impl.h: New file.
4056         * include/pstl/memory_impl.h: New file.
4057         * include/pstl/numeric_fwd.h: New file.
4058         * include/pstl/numeric_impl.h: New file.
4059         * include/pstl/parallel_backend.h: New file.
4060         * include/pstl/parallel_backend_tbb.h: New file.
4061         * include/pstl/parallel_backend_utils.h: New file.
4062         * include/pstl/parallel_impl.h: New file.
4063         * include/pstl/pstl_config.h: New file.
4064         * include/pstl/unseq_backend_simd.h: New file.
4065         * include/pstl/utils.h: New file.
4066         * include/std/algorithm: Include parallel algorithm implementations.
4067         * include/std/execution: New file.
4068         * include/std/memory: Include parallel algorithm implementations.
4069         * include/std/numeric: Include parallel algorithm implementations.
4070         * include/std/version: Add parallel algorithms feature test macro.
4071         * testsuite/util/pstl/pstl_test_config.h: New file.
4072         * testsuite/util/pstl/test_utils.h: New file.
4073         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc: New file.
4074         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc: New file.
4075         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_fill_destroy.cc: New file.
4076         * testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: New file.
4077         * testsuite/25_algorithms/pstl/alg_merge/merge.cc: New file.
4078         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc: New file.
4079         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc: New file.
4080         * testsuite/25_algorithms/pstl/alg_modifying_operations/fill.cc: New file.
4081         * testsuite/25_algorithms/pstl/alg_modifying_operations/generate.cc: New file.
4082         * testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc: New file.
4083         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc: New file.
4084         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc: New file.
4085         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc: New file.
4086         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove_copy.cc: New file.
4087         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace.cc: New file.
4088         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc: New file.
4089         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc: New file.
4090         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc: New file.
4091         * testsuite/25_algorithms/pstl/alg_modifying_operations/swap_ranges.cc: New file.
4092         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_binary.cc: New file.
4093         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_unary.cc: New file.
4094         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc: New file.
4095         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc: New file.
4096         * testsuite/25_algorithms/pstl/alg_nonmodifying/adjacent_find.cc: New file.
4097         * testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc: New file.
4098         * testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc: New file.
4099         * testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc: New file.
4100         * testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc: New file.
4101         * testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc: New file.
4102         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc: New file.
4103         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc: New file.
4104         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc: New file.
4105         * testsuite/25_algorithms/pstl/alg_nonmodifying/for_each.cc: New file.
4106         * testsuite/25_algorithms/pstl/alg_nonmodifying/mismatch.cc: New file.
4107         * testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc: New file.
4108         * testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc: New file.
4109         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc: New file.
4110         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc: New file.
4111         * testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc: New file.
4112         * testsuite/25_algorithms/pstl/alg_sorting/includes.cc: New file.
4113         * testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: New file.
4114         * testsuite/25_algorithms/pstl/alg_sorting/is_sorted.cc: New file.
4115         * testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc: New file.
4116         * testsuite/25_algorithms/pstl/alg_sorting/minmax_element.cc: New file.
4117         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc: New file.
4118         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc: New file.
4119         * testsuite/25_algorithms/pstl/alg_sorting/set.cc: New file.
4120         * testsuite/25_algorithms/pstl/alg_sorting/sort.cc: New file.
4121         * testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc: New file.
4122         * testsuite/26_numerics/pstl/numeric_ops/reduce.cc: New file.
4123         * testsuite/26_numerics/pstl/numeric_ops/scan.cc: New file.
4124         * testsuite/26_numerics/pstl/numeric_ops/transform_reduce.cc: New file.
4125         * testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc: New file.
4126         * testsuite/testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc: New file.
4127         * testsuite/testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc: New file.
4128         * testsuite/testsuite/20_util/specialized_algorithms/pstl/uninitialized_fill_destroy.cc: New file.
4129         * testsuite/testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: New file.
4130         * testsuite/testsuite/25_algorithms/pstl/alg_merge/merge.cc: New file.
4131         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc: New file.
4132         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc: New file.
4133         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/fill.cc: New file.
4134         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/generate.cc: New file.
4135         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc: New file.
4136         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc: New file.
4137         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc: New file.
4138         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc: New file.
4139         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/remove_copy.cc: New file.
4140         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/replace.cc: New file.
4141         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc: New file.
4142         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc: New file.
4143         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc: New file.
4144         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/swap_ranges.cc: New file.
4145         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/transform_binary.cc: New file.
4146         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/transform_unary.cc: New file.
4147         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc: New file.
4148         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc: New file.
4149         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/adjacent_find.cc: New file.
4150         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc: New file.
4151         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc: New file.
4152         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc: New file.
4153         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc: New file.
4154         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc: New file.
4155         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc: New file.
4156         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc: New file.
4157         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc: New file.
4158         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/for_each.cc: New file.
4159         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/mismatch.cc: New file.
4160         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc: New file.
4161         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc: New file.
4162         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc: New file.
4163         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc: New file.
4164         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc: New file.
4165         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/includes.cc: New file.
4166         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: New file.
4167         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/is_sorted.cc: New file.
4168         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc: New file.
4169         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/minmax_element.cc: New file.
4170         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc: New file.
4171         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc: New file.
4172         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/set.cc: New file.
4173         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/sort.cc: New file.
4174         * testsuite/testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc: New file.
4175         * testsuite/testsuite/26_numerics/pstl/numeric_ops/reduce.cc: New file.
4176         * testsuite/testsuite/26_numerics/pstl/numeric_ops/scan.cc: New file.
4177         * testsuite/testsuite/26_numerics/pstl/numeric_ops/transform_reduce.cc: New file.
4178         * testsuite/testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc: New file.
4179
4180 2019-03-21  Jonathan Wakely  <jwakely@redhat.com>
4181
4182         * include/c_compatibility/math.h [!__STDCPP_WANT_MATH_SPEC_FUNCS__]
4183         (assoc_laguerre, assoc_laguerref, assoc_laguerrel, assoc_legendre)
4184         (assoc_legendref, assoc_legendrel, beta, betaf, betal, comp_ellint_1)
4185         (comp_ellint_1f, comp_ellint_1l, comp_ellint_2, comp_ellint_2f)
4186         (comp_ellint_2l, comp_ellint_3, comp_ellint_3f, comp_ellint_3l)
4187         (cyl_bessel_i, cyl_bessel_if, cyl_bessel_il, cyl_bessel_j)
4188         (cyl_bessel_jf, cyl_bessel_jl, cyl_bessel_k, cyl_bessel_kf)
4189         (cyl_bessel_kl, cyl_neumann, cyl_neumannf, cyl_neumannl, ellint_1)
4190         (ellint_1f, ellint_1l, ellint_2, ellint_2f, ellint_2l, ellint_3)
4191         (ellint_3f, ellint_3l, expint, expintf, expintl, hermite, hermitef)
4192         (hermitel, laguerre, laguerref, laguerrel, legendre, legendref)
4193         (legendrel, riemann_zeta, riemann_zetaf, riemann_zetal, sph_bessel)
4194         (sph_besself, sph_bessell, sph_legendre, sph_legendref, sph_legendrel)
4195         (sph_neumann, sph_neumannf, sph_neumannl): Only add using-declarations
4196         when the special functions IS is enabled, not for C++17.
4197         * testsuite/26_numerics/headers/cmath/functions_global_c++17.cc:
4198         Replace with ...
4199         * testsuite/26_numerics/headers/cmath/functions_global.cc: New test,
4200         without checks for special functions in C++17.
4201         * testsuite/26_numerics/headers/cmath/special_functions_global.cc:
4202         New test.
4203
4204         PR libstdc++/88066
4205         * include/backward/hash_map: Use <> for includes not "".
4206         * include/backward/hash_set: Likewise.
4207         * include/backward/strstream: Likewise.
4208         * include/tr1/bessel_function.tcc: Likewise.
4209         * include/tr1/exp_integral.tcc: Likewise.
4210         * include/tr1/legendre_function.tcc: Likewise.
4211         * include/tr1/modified_bessel_func.tcc: Likewise.
4212         * include/tr1/riemann_zeta.tcc: Likewise.
4213
4214 2019-03-19  Jonathan Wakely  <jwakely@redhat.com>
4215
4216         * doc/xml/manual/allocator.xml: Link to table documenting evolution
4217         of extension allocators.
4218         * doc/xml/manual/evolution.xml: Use angle brackets for header names.
4219         Document new headers in 7.2, 8.1 and 9.1 releases.
4220         * doc/xml/manual/using.xml: Adjust link target for new_allocator.
4221         * doc/html/*: Regenerate.
4222
4223 2019-03-12  John David Anglin  <dave.anglin@bell.net>
4224
4225         PR libstdc++/89461
4226         * testsuite/lib/libstdc++.exp: Locate libatomic.
4227         * testsuite/lib/dg-options.exp (add_options_for_libatomic): New.
4228         * testsuite/20_util/shared_ptr/thread/default_weaktoshared.cc: Add
4229         libatomic options.
4230         * testsuite/20_util/shared_ptr/thread/mutex_weaktoshared.cc: Likewise.
4231         * testsuite/experimental/net/timer/waitable/cons.cc: Likewise.
4232         * testsuite/experimental/net/timer/waitable/dest.cc: Likewise.
4233         * testsuite/experimental/net/timer/waitable/ops.cc: Likewise.
4234
4235 2019-03-11  Jonathan Wakely  <jwakely@redhat.com>
4236
4237         PR libstdc++/89460
4238         * configure.ac: Check for sockatmark.
4239         * crossconfig.m4: Check for sockatmark.
4240         * config.h.in: Regenerate.
4241         * configure: Regenerate.
4242         * include/experimental/internet (address_v4::_S_hton): Rename
4243         overloaded functions to _S_hton_16 and _S_ntoh_16.
4244         (address_v4::_S_ntoh): Rename to _S_ntoh_16 and _S_ntoh_32.
4245         (basic_endpoint): Adjust calls to _S_hton and _S_ntoh.
4246         * include/experimental/socket (basic_socket::at_mark): Check
4247         _GLIBCXX_HAVE_SOCKATMARK.
4248
4249         * testsuite/29_atomics/atomic_flag/test_and_set/explicit-hle.cc: Use
4250         const variables instead of macros.
4251
4252         PR libstdc++/89629
4253         * libsupc++/hash_bytes.cc [__SIZEOF_SIZE_T__ == 8] (_Hash_bytes):
4254         Use correct type for len_aligned.
4255         * testsuite/20_util/hash/89629.cc: New test.
4256
4257 2019-03-11  Jakub Jelinek  <jakub@redhat.com>
4258
4259         PR libstdc++/89641
4260         * include/std/atomic (atomic<T>::store, atomic<T>::load,
4261         atomic<T>::exchange, atomic<T>::compare_exchange_weak,
4262         atomic<T>::compare_exchange_strong): Cast __m or __s and __f to int.
4263         * include/bits/atomic_base.h (__atomic_base<T>::operator++,
4264         __atomic_base<T>::operator--, __atomic_base<T>::operator+=,
4265         __atomic_base<T>::operator-=, __atomic_base<T>::operator&=,
4266         __atomic_base<T>::operator|=, __atomic_base<T>::operator^=,
4267         __atomic_base<T*>::operator++, __atomic_base<T*>::operator--,
4268         __atomic_base<T*>::operator+=, __atomic_base<T*>::operator-=): Cast
4269         memory_order_seq_cst to int.
4270
4271 2019-03-08  Jonathan Wakely  <jwakely@redhat.com>
4272
4273         * doc/xml/manual/using.xml: Use link element instead of xref.
4274         * doc/html/*: Regenerate.
4275
4276         * include/bits/fs_path.h (path::format): Add fixed underlying type.
4277
4278 2019-03-08  François Dumont  <fdumont@gcc.gnu.org>
4279
4280         PR libstdc++/89477
4281         * include/debug/map.h (map): Use _RequireNotAllocator to constrain
4282         parameters in deduction guides.
4283         * include/debug/multimap.h (multimap): Likewise.
4284         * include/debug/set.h (multimap): Likewise.
4285         * include/debug/multiset.h (multimap): Likewise.
4286         * include/debug/unordered_map (unordered_map): Likewise.
4287         (unordered_multimap): Likewise.
4288         * include/debug/unordered_set (unordered_set): Likewise.
4289         (unordered_multiset): Likewise.
4290
4291         PR libstdc++/89608
4292         * include/debug/unordered_map (unordered_map<>::_M_check_rehashed):
4293         Invalidate all iterators in case of rehash.
4294         (unordered_multimap<>::_M_check_rehashed): Likewise.
4295         * include/debug/unordered_set
4296         (unordered_set<>::_M_check_rehashed): Likewise.
4297         (unordered_multiset<>::_M_check_rehashed): Likewise.
4298         * testsuite/23_containers/unordered_set/debug/89608_neg.cc: New.
4299
4300 2019-03-07  Andreas Schwab  <schwab@suse.de>
4301
4302         * config/abi/post/riscv64-linux-gnu: New directory.
4303         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: New file.
4304
4305 2019-03-07  Jonathan Wakely  <jwakely@redhat.com>
4306
4307         * testsuite/20_util/function_objects/bind_front/1.cc: Change from
4308         compile test to run. Fix typo.
4309
4310         * doc/xml/manual/status_cxx2020.xml: Update C++20 status.
4311         * doc/html/*: Regenerate.
4312
4313         P0356R5 Simplified partial function application
4314         * include/std/functional [C++20] (_Bind_front, _Bind_front_t): Define
4315         helpers for bind_front.
4316         (bind_front, __cpp_lib_bind_front): Define.
4317         * testsuite/20_util/function_objects/bind_front/1.cc: New test.
4318
4319 2019-03-06  Jonathan Wakely  <jwakely@redhat.com>
4320
4321         * include/std/type_traits (__cpp_lib_bounded_array_traits): Define.
4322         * include/std/version (__cpp_lib_bounded_array_traits): Likewise.
4323         * testsuite/20_util/is_bounded_array/value.cc: Check for macro.
4324         * testsuite/20_util/is_unbounded_array/value.cc: Likewise.
4325
4326 2019-03-06  Edward Smith-Rowland  <3dw4rd@verizon.net>
4327
4328         PR libstdc++/86655 - std::assoc_legendre should not constrain
4329         the value of m (or x).
4330         * include/tr1/legendre_function.tcc (__assoc_legendre_p,
4331         __sph_legendre): If degree > order Don't throw, return 0.
4332         (__legendre_p, __assoc_legendre_p): Don't constrain x either.
4333         * testsuite/special_functions/02_assoc_legendre/pr86655.cc: New test.
4334         * testsuite/special_functions/20_sph_legendre/pr86655.cc: New test.
4335         * testsuite/tr1/5_numerical_facilities/special_functions/
4336         02_assoc_legendre/pr86655.cc: New test.
4337         * testsuite/tr1/5_numerical_facilities/special_functions/
4338         22_sph_legendre/pr86655.cc: New test.
4339
4340 2019-03-06  Ville Voutilainen  <ville.voutilainen@gmail.com>
4341
4342         Rewrite variant.
4343         Also PR libstdc++/85517
4344         * include/std/variant (__do_visit): New.
4345         (__variant_cast): Likewise.
4346         (__variant_cookie): Likewise.
4347         (__erased_*): Remove.
4348         (_Variant_storage::_S_vtable): Likewise.
4349         (_Variant_storage::__M_reset_impl): Adjust to use __do_visit.
4350         (_Variant_storage::__M_reset): Adjust.
4351         (__variant_construct): New.
4352         (_Copy_ctor_base(const _Copy_ctor_base&)): Adjust to use
4353         __variant_construct.
4354         (_Move_ctor_base(_Move_ctor_base&&)): Likewise.
4355         (_Move_ctor_base::__M_destructive_copy): New.
4356         (_Move_ctor_base::__M_destructive_move): Adjust to use
4357         __variant_construct.
4358         (_Copy_assign_base::operator=): Adjust to use __do_visit.
4359         (_Copy_assign_alias): Adjust to check both copy assignment
4360         and copy construction for triviality.
4361         (_Move_assign_base::operator=): Adjust to use __do_visit.
4362         (_Multi_array): Add support for visitors that accept and return
4363         a __variant_cookie.
4364         (__gen_vtable_impl::_S_apply_all_alts): Likewise.
4365         (__gen_vtable_impl::_S_apply_single_alt): Likewise.
4366         (__gen_vtable_impl::__element_by_index_or_cookie): New. Generate
4367         a __variant_cookie temporary for a variant that is valueless and..
4368         (__gen_vtable_impl::__visit_invoke): ..adjust here.
4369         (__gen_vtable::_Array_type): Conditionally make space for
4370         the __variant_cookie visitor case.
4371         (__variant_construct_by_index): New.
4372         (get_if): Adjust to use std::addressof.
4373         (relops): Adjust to use __do_visit.
4374         (variant): Add __variant_cast and __variant_construct_by_index
4375         as friends.
4376         (variant::emplace): Use _M_reset() and __variant_construct_by_index
4377         instead of self-destruction.
4378         (variant::swap): Adjust to use __do_visit.
4379         (visit): Reimplement in terms of __do_visit.
4380         (__variant_hash_call_base_impl::operator()): Adjust to use __do_visit.
4381         * testsuite/20_util/variant/compile.cc: Adjust.
4382         * testsuite/20_util/variant/run.cc: Likewise.
4383
4384 2019-03-06  Jonathan Wakely  <jwakely@redhat.com>
4385
4386         * include/bits/c++config.h (_cpp_lib_char8_t): Add L suffix to
4387         constant.
4388         * testsuite/experimental/feat-char8_t.cc: Likewise.
4389
4390          * include/std/type_traits [C++20] (is_bounded_array)
4391          (is_unbounded_array, is_bounded_array_v, is_unbounded_array_v):
4392          Define.
4393          * testsuite/20_util/is_bounded_array/requirements/
4394          explicit_instantiation.cc: New test.
4395          * testsuite/20_util/is_bounded_array/requirements/typedefs.cc: New
4396          test.
4397          * testsuite/20_util/is_bounded_array/value.cc: New test.
4398          * testsuite/20_util/is_unbounded_array/requirements/
4399          explicit_instantiation.cc: New test.
4400          * testsuite/20_util/is_unbounded_array/requirements/typedefs.cc: New
4401          * test.
4402          * testsuite/20_util/is_unbounded_array/value.cc: New test.
4403
4404         * include/bits/ptr_traits.h [C++20] (pointer_traits<T*>::pointer_to):
4405         Add constexpr.
4406         * testsuite/20_util/pointer_traits/pointer_to_constexpr.cc: New test.
4407
4408 2019-03-05  Jonathan Wakely  <jwakely@redhat.com>
4409
4410         * include/c_compatibility/math.h [C++20] (lerp): Add using
4411         declaration.
4412         * include/c_global/cmath [C++20] (__cpp_lib_interpolate): Define.
4413         (__lerp): Define function template to implement lerp.
4414         (lerp(float, float, float), lerp(double, double, double))
4415         (lerp(long double, long double, long double)): Define for C++20.
4416         * include/std/numeric [C++20] (__cpp_lib_interpolate): Define.
4417         (midpoint(T, T), midpoint(T*, T*)): Define.
4418         * include/std::version [C++20] (__cpp_lib_interpolate): Define.
4419         * testsuite/26_numerics/lerp.cc: New test.
4420         * testsuite/26_numerics/midpoint/floating.cc: New test.
4421         * testsuite/26_numerics/midpoint/integral.cc: New test.
4422         * testsuite/26_numerics/midpoint/pointer.cc: New test.
4423
4424 2019-03-04  Edward Smith-Rowland  <3dw4rd@verizon.net>
4425
4426         PR libstdc++/88996 Implement P0439R0
4427         Make std::memory_order a scoped enumeration.
4428         * include/bits/atomic_base.h: For C++20 make memory_order a scoped enum,
4429         add variables for the old enumerators.  Adjust calls.
4430         * testsuite/29_atomics/headers/atomic/types_std_c++2a.cc: New test.
4431         * testsuite/29_atomics/headers/atomic/types_std_c++2a_neg.cc: New test.
4432
4433 2019-03-04  Jonathan Wakely  <jwakely@redhat.com>
4434
4435         * testsuite/26_numerics/bit/bitops.rot/rotl.cc: Remove bogus dg-do
4436         directive.
4437
4438         * include/std/memory_resource (polymorphic_allocator): Add default
4439         template argument for C++20.
4440         (polymorphic_allocator::allocate_bytes)
4441         (polymorphic_allocator::deallocate_bytes)
4442         (polymorphic_allocator::allocate_object)
4443         (polymorphic_allocator::deallocate_object)
4444         (polymorphic_allocator::new_object)
4445         (polymorphic_allocator::delete_object): New member functions for
4446         C++20.
4447         * testsuite/20_util/polymorphic_allocator/allocate_object.cc: New
4448         test.
4449
4450 2019-03-03  Jonathan Wakely  <jwakely@redhat.com>
4451
4452         PR libstdc++/89562
4453         * src/filesystem/ops-common.h (do_copy_file): Open files in binary
4454         mode for mingw.
4455
4456 2019-03-01  Jonathan Wakely  <jwakely@redhat.com>
4457
4458         * testsuite/util/testsuite_allocator.h (__gnu_test::memory_resource)
4459         [!__cpp_sized_deallocation]: Do not pass size to operator delete.
4460
4461         * include/std/memory (uses_allocator_construction_args): New set of
4462         overloaded functions.
4463         (make_obj_using_allocator, uninitialized_construct_using_allocator):
4464         New functions.
4465         * include/std/memory_resource (polymorphic_allocator::construct)
4466         [__cplusplus > 201703l]: Replace all overloads with a single function
4467         using uses_allocator_construction_args.
4468         * testsuite/20_util/polymorphic_allocator/construct_c++2a.cc: New
4469         test.
4470         * testsuite/20_util/uses_allocator/make_obj.cc: New test.
4471
4472 2019-02-27  Jonathan Wakely  <jwakely@redhat.com>
4473
4474         PR libstdc++/89466
4475         * acinclude.m4 (GLIBCXX_CONFIGURE_DOCBOOK): Reorder check for local
4476         stylesheet directories before check for xsltproc. Try to use
4477         xmlcatalog to find local stylesheet directory before trying hardcoded
4478         paths. Add path used by suse to hardcoded paths. Adjust xsltproc
4479         check to look for the same stylesheet as doc/Makefile.am uses. Don't
4480         use xsltproc if xmlcatalog fails to find a local stylesheet.
4481         * configure.ac: Check for xmlcatalog.
4482         * Makefile.in: Regenerate.
4483         * configure: Likewise.
4484         * doc/Makefile.in: Likewise.
4485         * include/Makefile.in: Likewise.
4486         * libsupc++/Makefile.in: Likewise.
4487         * po/Makefile.in: Likewise.
4488         * python/Makefile.in: Likewise.
4489         * src/Makefile.in: Likewise.
4490         * src/c++11/Makefile.in: Likewise.
4491         * src/c++17/Makefile.in: Likewise.
4492         * src/c++98/Makefile.in: Likewise.
4493         * src/filesystem/Makefile.in: Likewise.
4494         * testsuite/Makefile.in: Likewise.
4495
4496 2019-02-26  Jonathan Wakely  <jwakely@redhat.com>
4497
4498         PR libstdc++/89477
4499         * include/bits/alloc_traits.h (_RequireNotAllocator): New helper for
4500         container deduction guides.
4501         * include/bits/hashtable.h (_RequireNotAllocatorOrIntegral): Likewise.
4502         * include/bits/stl_map.h (map): Use _RequireNotAllocator to constrain
4503         parameters in deduction guides.
4504         * include/bits/stl_multimap.h (multimap): Likewise.
4505         * include/bits/stl_multiset.h (multiset): Likewise.
4506         * include/bits/stl_queue.h (queue, priority_queue): Likewise.
4507         * include/bits/stl_set.h (set): Likewise.
4508         * include/bits/stl_stack.h (stack): Likewise.
4509         * include/bits/unordered_map.h (unordered_map, unordered_multimap):
4510         use _RequireNotAllocator and _RequireNotAllocatorOrIntegral to
4511         constrain parameters in deduction guides.
4512         * include/bits/unordered_set.h (unordered_set, unordered_multiset):
4513         Likewise.
4514         * testsuite/23_containers/map/cons/deduction.cc: Test additional
4515         deduction cases.
4516         * testsuite/23_containers/multiset/cons/deduction.cc: Likewise.
4517         * testsuite/23_containers/set/cons/deduction.cc: Likewise.
4518         * testsuite/23_containers/unordered_map/cons/deduction.cc: Likewise.
4519         * testsuite/23_containers/unordered_multimap/cons/deduction.cc:
4520         Likewise.
4521         * testsuite/23_containers/unordered_multiset/cons/deduction.cc:
4522         Likewise.
4523         * testsuite/23_containers/unordered_set/cons/deduction.cc: Likewise.
4524
4525         PR libstdc++/89416
4526         * include/bits/alloc_traits.h (__is_alloc_insertable_impl): Change
4527         to class template and partial specialization using void_t.
4528         (__is_copy_insertable, __is_move_insertable): Adjust base class.
4529
4530 2019-02-24  Jonathan Wakely  <jwakely@redhat.com>
4531
4532         PR libstdc++/89416
4533         * include/bits/alloc_traits.h (__is_alloc_insertable_impl): Make
4534         copy and move members public.
4535
4536 2019-02-23  Jonathan Wakely  <jwakely@redhat.com>
4537
4538         * include/std/type_traits (__underlying_type_impl): New helper to
4539         make underlying_type SFINAE-friendly.
4540         (underlying_type): Derive from __underlying_type_impl.
4541         * testsuite/20_util/underlying_type/requirements/typedefs-3.cc: New
4542         test.
4543
4544         PR libstdc++/89446
4545         * include/bits/char_traits.h (__constant_char_array): Check index is
4546         in range before dereferencing.
4547         (char_traits<char>::compare, char_traits<char>::find)
4548         (char_traits<char8_t>::compare, char_traits<char8_t>::find): Return
4549         immediately if n is zero.
4550         (char_traits<wchar_t>::compare, char_traits<wchar_t>::find): Likewise.
4551         Remove workarounds for PR 67026.
4552         * testsuite/21_strings/basic_string_view/operators/char/89446.cc:
4553         New test.
4554         * testsuite/21_strings/basic_string_view/operators/wchar_t/89446.cc:
4555         New test.
4556
4557 2019-02-22  Eric Botcazou  <ebotcazou@adacore.com>
4558
4559         * config/abi/post/sparc64-linux-gnu/baseline_symbols.txt: Adjust.
4560         * config/abi/post/sparc64-linux-gnu/32/baseline_symbols.txt: Likewise.
4561
4562 2019-02-22  Jakub Jelinek  <jakub@redhat.com>
4563
4564         PR libstdc++/89402
4565         * src/c++98/compatibility-ldbl.cc (_ZNKSt4hashIeEclEe): Change return
4566         type to std::size_t and argument to type to long double.
4567
4568 2019-02-22  Eric Botcazou  <ebotcazou@adacore.com>
4569
4570         * configure.host (abi_baseline_pair): Adjust for SPARC64/Linux.
4571         * config/abi/post/sparc64-linux-gnu: New directory.
4572         * config/abi/post/sparc64-linux-gnu/baseline_symbols.txt: New file.
4573         * config/abi/post/sparc64-linux-gnu/32: New directory.
4574         * config/abi/post/sparc64-linux-gnu/32/baseline_symbols.txt: New file.
4575
4576 2019-02-21  Jonathan Wakely  <jwakely@redhat.com>
4577
4578         * testsuite/29_atomics/headers/atomic/types_std_c++20.cc: New test.
4579         * testsuite/29_atomics/headers/atomic/types_std_c++20_neg.cc: New
4580         test.
4581
4582 2019-02-22  Tom Honermann  <tom@honermann.net>
4583
4584         * python/libstdcxx/v6/printers.py (register_type_printers): Add type
4585         printers for u8string and u8string_view.
4586
4587 2019-02-22  Tom Honermann  <tom@honermann.net>
4588
4589         * testsuite/18_support/byte/ops.cc: Validate
4590         std::to_integer<char8_t>, std::to_integer<char16_t>, and
4591         std::to_integer<char32_t>.
4592         * testsuite/18_support/numeric_limits/dr559.cc: Validate
4593         std::numeric_limits<char8_t>.
4594         * testsuite/18_support/numeric_limits/lowest.cc: Validate
4595         std::numeric_limits<char8_t>::lowest().
4596         * testsuite/18_support/numeric_limits/max_digits10.cc: Validate
4597         std::numeric_limits<char8_t>::max_digits10.
4598         * testsuite/18_support/type_info/fundamental.cc: Validate
4599         typeinfo for char8_t.
4600         * testsuite/20_util/from_chars/1_c++20_neg.cc: New test, validating
4601         std::from_chars with char8_t.
4602         * testsuite/20_util/hash/requirements/explicit_instantiation.cc:
4603         Validate explicit instantiation of std::hash<char8_t>.
4604         * testsuite/20_util/is_integral/value.cc: Validate
4605         std::is_integral<char8_t>.
4606         * testsuite/20_util/make_signed/requirements/typedefs-4.cc:
4607         Validate std::make_signed<char8_t>.
4608         * testsuite/21_strings/basic_string/cons/char/deduction.cc:
4609         Validate u8string construction from char8_t sources.
4610         * testsuite/21_strings/basic_string/types/pmr_typedefs.cc: Validate
4611         std::pmr::u8string.
4612         * testsuite/21_strings/basic_string_view/operations/compare/
4613         char/70483.cc: Validate substr operations on u8string_view.
4614         * testsuite/21_strings/basic_string_view/typedefs.cc: Validate that
4615         the u8string_view typedef is defined.
4616         * testsuite/21_strings/char_traits/requirements/
4617         constexpr_functions.cc: Validate char_traits<char8_t> constexpr
4618         member functions.
4619         * testsuite/21_strings/char_traits/requirements/
4620         constexpr_functions_c++17.cc: Validate char_traits<char8_t> C++17
4621         constexpr member functions.
4622         * testsuite/21_strings/headers/string/types_std_c++0x.cc: Validate
4623         that the u8string typedef is defined.
4624         * testsuite/22_locale/locale/cons/unicode.cc: Validate the presence
4625         of the std::codecvt<char16_t, char8_t, std::mbstate_t> and
4626         std::codecvt<char32_t, char8_t, std::mbstate_t> facets.
4627         * testsuite/29_atomics/atomic/cons/assign_neg.cc: Update line
4628         numbers.
4629         * testsuite/29_atomics/atomic/cons/copy_neg.cc: Likewise.
4630         * testsuite/29_atomics/atomic_integral/cons/assign_neg.cc:
4631         Likewise.
4632         * testsuite/29_atomics/atomic_integral/cons/copy_neg.cc: Likewise.
4633         * testsuite/29_atomics/atomic_integral/is_always_lock_free.cc:
4634         Validate std::atomic<char8_t>::is_always_lock_free
4635         * testsuite/29_atomics/atomic_integral/operators/bitwise_neg.cc:
4636         Update line numbers.
4637         * testsuite/29_atomics/atomic_integral/operators/decrement_neg.cc:
4638         Likewise.
4639         * testsuite/29_atomics/atomic_integral/operators/increment_neg.cc:
4640         Likewise.
4641         * testsuite/experimental/polymorphic_allocator/pmr_typedefs_string.cc:
4642         Validate std::experimental::pmr::u8string.
4643         * testsuite/experimental/string_view/typedefs.cc: Validate that the
4644         u8string_view typedef is defined.
4645         * testsuite/util/testsuite_common_types.h: Add char8_t, char16_t and
4646         char32_t to the typelists.
4647
4648 2019-02-22  Tom Honermann  <tom@honermann.net>
4649
4650         * include/ext/typelist.h: Constrain a partial specialization of
4651         typelist::detail::append_ to only match chain<T1,T2>.
4652
4653 2019-02-21  Jonathan Wakely  <jwakely@redhat.com>
4654
4655         PR libstdc++/89416
4656         * include/bits/alloc_traits.h (__is_alloc_insertable_impl): Replace
4657         class template with class. Replace move and copy member types with
4658         member alias templates, so they are only instantiated when needed.
4659         (__is_copy_insertable, __is_move_insertable): Adjust base class.
4660         * testsuite/23_containers/vector/modifiers/push_back/89130.cc: Enable
4661         test for C++11/14/17 as well.
4662         * testsuite/23_containers/vector/modifiers/push_back/89416.cc: New
4663         test.
4664
4665 2019-02-20  Jakub Jelinek  <jakub@redhat.com>
4666
4667         PR libstdc++/89402
4668         * src/c++98/compatibility-ldbl.cc (_ZNKSt4hashIeEclEe): Add
4669         _GLIBCXX_PURE to the alias declaration.
4670
4671 2019-02-19  Jonathan Wakely  <jwakely@redhat.com>
4672
4673         * testsuite/21_strings/basic_string/literals/types.cc
4674         [_GLIBCXX_USE_CHAR8_T]: Adjust expected string type for u8 literal.
4675         * testsuite/21_strings/basic_string/literals/values.cc
4676         [_GLIBCXX_USE_CHAR8_T]: Likewise.
4677         * testsuite/22_locale/codecvt/char16_t.cc: Adjust for u8 literals
4678         potentially having different type.
4679         * testsuite/22_locale/codecvt/char32_t.cc: Likewise.
4680         * testsuite/22_locale/codecvt/codecvt_utf8/79980.cc: Cast u8 literal
4681         to char.
4682         * testsuite/22_locale/codecvt/codecvt_utf8/wchar_t/1.cc: Likewise.
4683         * testsuite/22_locale/codecvt/utf8.cc: Likewise.
4684         * testsuite/22_locale/conversions/string/2.cc: Remove u8 prefix from
4685         string literals only using basic character set.
4686         * testsuite/22_locale/conversions/string/3.cc: Likewise. Cast other
4687         u8 literals to char.
4688         * testsuite/29_atomics/headers/atomic/macros.cc [_GLIBCXX_USE_CHAR8_T]:
4689         Test ATOMIC_CHAR8_T_LOCK_FREE.
4690         Add missing #error to ATOMIC_CHAR16_T_LOCK_FREE test.
4691         * testsuite/29_atomics/headers/atomic/types_std_c++0x.cc
4692         [_GLIBCXX_USE_CHAR8_T]: Check for std::atomic_char8_t.
4693         * testsuite/experimental/string_view/literals/types.cc
4694         [_GLIBCXX_USE_CHAR8_T]: Adjust expected string_view type for u8
4695         literal.
4696         * testsuite/experimental/string_view/literals/values.cc
4697         [_GLIBCXX_USE_CHAR8_T]: Likewise.
4698
4699 2019-02-19  Tom Honermann  <tom@honermann.net>
4700
4701         * testsuite/18_support/numeric_limits/char8_t.cc: New test cloned
4702         from char16_32_t.cc; validates numeric_limits<char8_t>.
4703         * testsuite/21_strings/basic_string/literals/types-char8_t.cc: New
4704         test cloned from types.cc; validates operator""s for char8_t
4705         returns u8string.
4706         * testsuite/21_strings/basic_string/literals/values-char8_t.cc: New
4707         test cloned from values.cc; validates construction and comparison
4708         of u8string values.
4709         * testsuite/21_strings/basic_string/requirements/
4710         /explicit_instantiation/char8_t/1.cc: New test cloned from
4711         char16_t/1.cc; validates explicit instantiation of
4712         basic_string<char8_t>.
4713         * testsuite/21_strings/basic_string_view/literals/types-char8_t.cc:
4714         New test cloned from types.cc; validates operator""sv for char8_t
4715         returns u8string_view.
4716         * testsuite/21_strings/basic_string_view/literals/
4717         values-char8_t.cc: New test cloned from values.cc; validates
4718         construction and comparison of u8string_view values.
4719         * testsuite/21_strings/basic_string_view/requirements/
4720         explicit_instantiation/char8_t/1.cc: New test cloned from
4721         char16_t/1.cc; validates explicit instantiation of
4722         basic_string_view<char8_t>.
4723         * testsuite/21_strings/char_traits/requirements/char8_t/65049.cc:
4724         New test cloned from char16_t/65049.cc; validates that
4725         char_traits<char8_t> is not vulnerable to the concerns in PR65049.
4726         * testsuite/21_strings/char_traits/requirements/char8_t/
4727         typedefs.cc: New test cloned from char16_t/typedefs.cc; validates
4728         that char_traits<char8_t> member typedefs are present and correct.
4729         * testsuite/21_strings/char_traits/requirements/
4730         explicit_instantiation/char8_t/1.cc: New test cloned from
4731         char16_t/1.cc; validates explicit instantiation of
4732         char_traits<char8_t>.
4733         * testsuite/22_locale/codecvt/char16_t-char8_t.cc: New test cloned
4734         from char16_t.cc: validates
4735         codecvt<char16_t, char8_t, mbstate_t>.
4736         * testsuite/22_locale/codecvt/char32_t-char8_t.cc: New test cloned
4737         from char32_t.cc: validates
4738         codecvt<char32_t, char8_t, mbstate_t>.
4739         * testsuite/22_locale/codecvt/utf8-char8_t.cc: New test cloned from
4740         utf8.cc; validates codecvt<char16_t, char8_t, std::mbstate_t> and
4741         codecvt<char32_t, char8_t, std::mbstate_t>.
4742         * testsuite/27_io/filesystem/path/native/string-char8_t.cc: New
4743         test cloned from string.cc; validates filesystem::path construction
4744         from char8_t input.
4745         * testsuite/experimental/feat-char8_t.cc: New test; validates that
4746         the __cpp_lib_char8_t feature test macro is defined with the
4747         correct value.
4748         * testsuite/experimental/filesystem/path/native/string-char8_t.cc:
4749         New test cloned from string.cc; validates filesystem::path
4750         construction from char8_t input.
4751         * testsuite/experimental/string_view/literals/types-char8_t.cc: New
4752         test cloned from types.cc; validates operator""sv for char8_t
4753         returns u8string_view.
4754         * testsuite/experimental/string_view/literals/values-char8_t.cc:
4755         New test cloned from values.cc; validates construction and
4756         comparison of u8string_view values.
4757         * testsuite/experimental/string_view/requirements/
4758         explicit_instantiation/char8_t/1.cc: New test cloned from
4759         char16_t/1.cc; validates explicit instantiation of
4760         basic_string_view<char8_t>.
4761         * testsuite/ext/char8_t/atomic-1.cc: New test; validates that
4762         ATOMIC_CHAR8_T_LOCK_FREE is not defined if char8_t support is not
4763         enabled.
4764
4765 2019-02-19  Tom Honermann  <tom@honermann.net>
4766
4767         P0482R5 char8_t: Standard library support
4768         * config/abi/pre/gnu-versioned-namespace.ver (CXXABI_2.0): Add
4769         typeinfo symbols for char8_t.
4770         * config/abi/pre/gnu.ver: Add CXXABI_1.3.12.
4771         (GLIBCXX_3.4.26): Add symbols for specializations of
4772         numeric_limits and codecvt that involve char8_t.
4773         (CXXABI_1.3.12): Add typeinfo symbols for char8_t.
4774         * include/bits/atomic_base.h: Add atomic_char8_t.
4775         * include/bits/basic_string.h: Add std::hash<u8string> and
4776         operator""s(const char8_t*, size_t).
4777         * include/bits/c++config: Define _GLIBCXX_USE_CHAR8_T and
4778         __cpp_lib_char8_t.
4779         * include/bits/char_traits.h: Add char_traits<char8_t>.
4780         * include/bits/codecvt.h: Add
4781         codecvt<char16_t, char8_t, mbstate_t>,
4782         codecvt<char32_t, char8_t, mbstate_t>,
4783         codecvt_byname<char16_t, char8_t, mbstate_t>, and
4784         codecvt_byname<char32_t, char8_t, mbstate_t>.
4785         * include/bits/cpp_type_traits.h: Add __is_integer<char8_t> to
4786         recognize char8_t as an integral type.
4787         * include/bits/fs_path.h: (path::__is_encoded_char): Recognize
4788         char8_t.
4789         (path::u8string): Return std::u8string when char8_t support is
4790         enabled.
4791         (path::generic_u8string): Likewise.
4792         (path::_S_convert): Handle conversion from char8_t input.
4793         (path::_S_str_convert): Likewise.
4794         * include/bits/functional_hash.h: Add hash<char8_t>.
4795         * include/bits/locale_conv.h (__str_codecvt_out): Add overloads for
4796         char8_t.
4797         * include/bits/locale_facets.h (_GLIBCXX_NUM_UNICODE_FACETS): Bump
4798         for new char8_t specializations.
4799         * include/bits/localefwd.h: Add missing declarations of
4800         codecvt<char16_t, char, mbstate_t> and
4801         codecvt<char32_t, char, mbstate_t>.  Add char8_t declarations
4802         codecvt<char16_t, char8_t, mbstate_t> and
4803         codecvt<char32_t, char8_t, mbstate_t>.
4804         * include/bits/postypes.h: Add u8streampos
4805         * include/bits/stringfwd.h: Add declarations of
4806         char_traits<char8_t> and u8string.
4807         * include/c_global/cstddef: Add __byte_operand<char8_t>.
4808         * include/experimental/bits/fs_path.h (path::__is_encoded_char):
4809         Recognize char8_t.
4810         (path::u8string): Return std::u8string when char8_t support is
4811         enabled.
4812         (path::generic_u8string): Likewise.
4813         (path::_S_convert): Handle conversion from char8_t input.
4814         (path::_S_str_convert): Likewise.
4815         * include/experimental/string: Add u8string.
4816         * include/experimental/string_view: Add u8string_view,
4817         hash<experimental::u8string_view>, and
4818         operator""sv(const char8_t*, size_t).
4819         * include/std/atomic: Add atomic<char8_t> and atomic_char8_t.
4820         * include/std/charconv (__is_int_to_chars_type): Recognize char8_t
4821         as a character type.
4822         * include/std/limits: Add numeric_limits<char8_t>.
4823         * include/std/string_view: Add u8string_view,
4824         hash<experimental::u8string_view>, and
4825         operator""sv(const char8_t*, size_t).
4826         * include/std/type_traits: Add __is_integral_helper<char8_t>,
4827         __make_unsigned<char8_t>, and __make_signed<char8_t>.
4828         * libsupc++/atomic_lockfree_defines.h: Define
4829         ATOMIC_CHAR8_T_LOCK_FREE.
4830         * src/c++11/Makefile.am: Compile with -fchar8_t when compiling
4831         codecvt.cc and limits.cc so that char8_t specializations of
4832         numeric_limits and codecvt and emitted.
4833         * src/c++11/Makefile.in: Likewise.
4834         * src/c++11/codecvt.cc: Define members of
4835         codecvt<char16_t, char8_t, mbstate_t>,
4836         codecvt<char32_t, char8_t, mbstate_t>,
4837         codecvt_byname<char16_t, char8_t, mbstate_t>, and
4838         codecvt_byname<char32_t, char8_t, mbstate_t>.
4839         * src/c++11/limits.cc: Define members of
4840         numeric_limits<char8_t>.
4841         * src/c++98/Makefile.am: Compile with -fchar8_t when compiling
4842         locale_init.cc and localename.cc.
4843         * src/c++98/Makefile.in: Likewise.
4844         * src/c++98/locale_init.cc: Add initialization for the
4845         codecvt<char16_t, char8_t, mbstate_t> and
4846         codecvt<char32_t, char8_t, mbstate_t> facets.
4847         * src/c++98/localename.cc: Likewise.
4848         * testsuite/util/testsuite_abi.cc: Validate ABI bump.
4849
4850 2019-02-18  Wilco Dijkstra  <wdijkstr@arm.com>
4851
4852         * 27_io/filesystem/operations/all.cc: Add dg-require-filesystem-ts.
4853         * 27_io/filesystem/operations/resize_file.cc: Likewise.
4854         * 27_io/filesystem/path/generation/normal2.cc: Likewise.
4855
4856 2019-02-14  Jonathan Wakely  <jwakely@redhat.com>
4857
4858         * doc/xml/manual/status_cxx2020.xml: Update P0887R1 status.
4859         * doc/html/*: Regenerate.
4860
4861         * doc/xml/manual/status_cxx2017.xml: Add P0063R3 to status table.
4862         * doc/html/*: Regenerate.
4863
4864         * doc/xml/manual/intro.xml: Document LWG 2586 status.
4865         * include/bits/uses_allocator.h (__uses_alloc): Use const lvalue
4866         allocator type in is_constructible checks.
4867         * testsuite/20_util/scoped_allocator/69293_neg.cc: Adjust dg-error.
4868         * testsuite/20_util/scoped_allocator/dr2586.cc: New test.
4869         * testsuite/20_util/tuple/cons/allocators.cc: Add test using
4870         problematic type from LWG 2586 discussion.
4871         * testsuite/20_util/uses_allocator/69293_neg.cc: Adjust dg-error.
4872         * testsuite/20_util/uses_allocator/cons_neg.cc: Likewise.
4873
4874         * configure.ac: Check for C11 timespec_get function.
4875         * crossconfig.m4 (freebsd, linux, gnu, cygwin, solaris, netbsd)
4876         (openbsd): Likewise
4877         * config.h.in: Regenerate.
4878         * configure: Regenerate.
4879         * include/c_global/ctime (timespec, timespec_get): Add to namespace
4880         std for C++17 and up.
4881
4882         * doc/xml/manual/intro.xml: Document LWG 2537 status.
4883         * include/bits/stl_queue.h
4884         (priority_queue(const Compare&, const Container&, const Alloc&))
4885         (priority_queue(const Compare&, Container&&, const Alloc&)): Call
4886         make_heap.
4887         * testsuite/23_containers/priority_queue/dr2537.cc: New test.
4888
4889         * doc/xml/manual/intro.xml: Document LWG 2566 status.
4890         * include/bits/stl_queue.h (queue, priority_queue): Add static
4891         assertions to enforce LWG 2566 requirement on value_type.
4892         * include/bits/stl_stack.h (stack): Likewise.
4893
4894         PR middle-end/89303
4895         * testsuite/20_util/enable_shared_from_this/89303.cc: New test.
4896
4897         * doc/xml/manual/intro.xml: Document LWG 2735 status.
4898         * include/bits/std_abs.h: Add comment about LWG 2735.
4899         * testsuite/26_numerics/headers/cstdlib/dr2735.cc: New test.
4900
4901 2019-02-13  Jonathan Wakely  <jwakely@redhat.com>
4902
4903         PR libstdc++/89345
4904         * include/std/version [__cpp_impl_destroying_delete]
4905         (__cpp_lib_destroying_delete): Only define for C++2a and later.
4906         * libsupc++/new [__cpp_impl_destroying_delete]
4907         (__cpp_lib_destroying_delete): Likewise.
4908         (destroying_delete_t, destroying_delete): Likewise, but define even
4909         when __cpp_impl_destroying_delete is not defined.
4910         * testsuite/18_support/destroying_delete.cc: New test.
4911
4912 2019-02-11  Jonathan Wakely  <jwakely@redhat.com>
4913
4914         PR libstdc++/89023
4915         * testsuite/17_intro/headers/c++2011/parallel_mode.cc: New test.
4916         * testsuite/17_intro/headers/c++2014/parallel_mode.cc: New test.
4917         * testsuite/17_intro/headers/c++2017/parallel_mode.cc: New test.
4918         * testsuite/28_regex/headers/regex/parallel_mode.cc: Remove.
4919
4920 2019-02-09  Jonathan Wakely  <jwakely@redhat.com>
4921
4922         PR libstdc++/71044
4923         * include/bits/fs_path.h (path::has_root_name)
4924         (path::has_root_directory, path::has_root_path)
4925         (path::has_relative_path, path::has_parent_path)
4926         (path::has_filename, path::has_stem, path::has_extension)
4927         (path::is_absolute, path::is_relative, path::_M_find_extension): Add
4928         noexcept.
4929         * src/c++17/fs_path.cc (path::has_root_name)
4930         (path::has_root_directory, path::has_root_path)
4931         (path::has_relative_path, path::has_parent_path)
4932         (path::has_filename, path::_M_find_extension): Add noexcept.
4933
4934 2019-02-06  Jonathan Wakely  <jwakely@redhat.com>
4935
4936         PR libstdc++/89102 (partial)
4937         * include/std/type_traits (common_type<>): Define.
4938         (common_type<T>): Derive from common_type<T, T>.
4939         * testsuite/20_util/common_type/requirements/explicit_instantiation.cc:
4940         Test zero-length template argument list.
4941         * testsuite/20_util/common_type/requirements/sfinae_friendly_1.cc:
4942         Test additional single argument cases.
4943         * testsuite/20_util/common_type/requirements/sfinae_friendly_2.cc:
4944         Adjust expected error.
4945
4946 2019-02-05  Jonathan Wakely  <jwakely@redhat.com>
4947
4948         PR libstdc++/89128
4949         * include/bits/stl_queue.h (queue, priority_queue): Add deduction
4950         guides.
4951         * include/bits/stl_stack.h (stack): Likewise.
4952         * testsuite/23_containers/priority_queue/deduction.cc: New test.
4953         * testsuite/23_containers/queue/deduction.cc: New test.
4954         * testsuite/23_containers/stack/deduction.cc: New test.
4955
4956         PR libstdc++/89194
4957         * include/std/type_traits (__is_convertible_helper)
4958         (__is_convertible_helper<_From, _To, false>): Revert changes to
4959         support is_nothrow_convertible.
4960         (__is_nt_convertible_helper): New helper.
4961         (is_nothrow_convertible): Use __is_nt_convertible_helper.
4962
4963         * testsuite/23_containers/vector/modifiers/push_back/49836.cc: Restore
4964         use of CopyConsOnlyType, but also test DelAnyAssign for completeness.
4965
4966         PR libstdc++/89130
4967         * include/bits/alloc_traits.h (__is_copy_insertable_impl): Rename to
4968         __is_alloc_insertable_impl. Replace single type member with two
4969         members, one for each of copy and move insertable.
4970         (__is_move_insertable): New trait for internal use.
4971         * include/bits/stl_vector.h (vector::_S_nothrow_relocate(true_type))
4972         (vector::_S_nothrow_relocate(true_type)): New functions to
4973         conditionally check if __relocate_a can throw.
4974         (vector::_S_use_relocate()): Dispatch to _S_nothrow_relocate based
4975         on __is_move_insertable.
4976         (vector::_S_do_relocate): New overloaded functions to conditionally
4977         call __relocate_a.
4978         (vector::_S_relocate): New function that dispatches to _S_do_relocate
4979         based on _S_use_relocate.
4980         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
4981         (vector::_M_default_append): Call _S_relocate instead of __relocate_a.
4982         * testsuite/23_containers/vector/modifiers/push_back/89130.cc: New.
4983
4984         PR libstdc++/89090
4985         * include/bits/stl_uninitialized.h (__relocate_a_1): Make unused
4986         parameter unnamed. Add message to static assertion.
4987         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
4988         (vector::_M_default_append): Use _GLIBCXX17_CONSTEXPR for if constexpr
4989         in C++11 code.
4990
4991 2019-02-05  Marc Glisse  <marc.glisse@inria.fr>
4992
4993         PR libstdc++/87106
4994         * include/bits/stl_uninitialized.h (__is_trivially_relocatable):
4995         Rename...
4996         (__is_bitwise_relocatable): ... to this.
4997         (__relocate_a_1): Adapt.
4998         * include/bits/stl_deque.h (__is_trivially_relocatable): Rename...
4999         (__is_bitwise_relocatable): ... to this.
5000
5001 2019-01-30  Jonathan Wakely  <jwakely@redhat.com>
5002
5003         PR libstdc++/89117
5004         * src/c++17/fs_path.cc (path::replace_extension): Erase extension from
5005         final component as well as from _M_pathname. Append the dot using
5006         operator+= instead of only to _M_pathname.
5007         (path::_M_find_extension): Reformat slightly.
5008         * testsuite/27_io/filesystem/path/modifiers/replace_extension.cc:
5009         Add more test cases.
5010
5011 2019-01-30  Ulrich Drepper  <drepper@redhat.com>
5012
5013         * doc/xml/manual/status_cxx2020.xml: Update P0600 entry.
5014
5015 2019-01-29  Jonathan Wakely  <jwakely@redhat.com>
5016
5017         * testsuite/26_numerics/headers/complex/synopsis.cc: Remove incorrect
5018         constexpr specifiers from arg and proj.
5019
5020         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Add missing exports for
5021         __shared_ptr instantiations used by gcc4-compatible ABI.
5022
5023         * include/experimental/forward_list (experimental::erase): Qualify
5024         call to erase_if.
5025         * include/experimental/list (experimental::erase): Likewise.
5026         * include/std/forward_list (std::erase): Likewise.
5027         * include/std/list (std::erase): Likewise.
5028
5029         * testsuite/20_util/reference_wrapper/result_type.cc: Disable for
5030         C++2a.
5031         * testsuite/20_util/reference_wrapper/typedefs-2.cc: Likewise.
5032         * testsuite/20_util/reference_wrapper/typedefs-3.cc: Likewise.
5033         * testsuite/20_util/reference_wrapper/typedefs.cc: Likewise.
5034         * testsuite/30_threads/async/54297.cc: Suppress nodiscard warning.
5035         * testsuite/ext/array_allocator/26875.cc: Likewise.
5036         * testsuite/ext/pool_allocator/allocate_chunk.cc: Likewise.
5037         * testsuite/util/replacement_memory_operators.h: Likewise.
5038         * testsuite/util/testsuite_allocator.h: Likewise.
5039
5040         * include/std/memory_resource (__pool_resource::_M_unpooled): Use
5041         normal mode vector, even for debug mode.
5042         * include/std/vector [_GLIBCXX_DEBUG] (_GLIBCXX_STD_C::pmr::vector):
5043         Define alias template for normal mode vector.
5044
5045 2019-01-28  Jonathan Wakely  <jwakely@redhat.com>
5046
5047         PR libstdc++/68737
5048         * config/locale/generic/c_locale.h (__convert_from_v)
5049         [_GLIBCXX_USE_C99_STDIO]: Also check _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
5050         * config/os/hpux/os_defines.h: Define _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
5051         * include/bits/locale_facets.tcc (num_put::_M_insert_float)
5052         [_GLIBCXX_USE_C99_STDIO]: Also check _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
5053
5054 2019-01-24  Jonathan Wakely  <jwakely@redhat.com>
5055
5056         PR libstdc++/88840
5057         * include/bits/stl_vector.h (vector::__use_relocate): Replace static
5058         data member with static member function _S_use_relocate().
5059         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
5060         (vector::_M_default_append): Use _S_use_relocate() instead of
5061         __use_relocate.
5062
5063         * testsuite/27_io/filesystem/path/compare/strings.cc: Only compare
5064         sign of results.
5065
5066 2019-01-22  Jonathan Wakely  <jwakely@redhat.com>
5067
5068         PR libstdc++/88740
5069         * testsuite/util/testsuite_hooks.h [stderr] (VERIFY): Use fprintf to
5070         write to stderr instead of using printf.
5071
5072 2019-01-21  Jakub Jelinek  <jakub@redhat.com>
5073
5074         PR libstdc++/86590
5075         * include/bits/char_traits.h (__constant_string_p,
5076         __constant_char_array_p): Use __builtin_is_constant_evaluated if
5077         available.
5078
5079 2019-01-20  Ulrich Drepper  <drepper@redhat.com>
5080
5081         Implement C++20 P0600r1.
5082         * include/backward/hash_map: Add nodiscard attribute to empty.
5083         * include/backward/hash_set: Likewise.
5084         * backward/hashtable.h: Likewise.
5085         * include/bits/basic_string.h: Likewise.
5086         * include/bits/forward_list.h: Likewise.
5087         * include/bits/hashtable.h: Likewise.
5088         * include/bits/regex.h: Likewise.
5089         * include/bits/stl_deque.h: Likewise.
5090         * include/bits/stl_list.h: Likewise.
5091         * include/bits/stl_map.h: Likewise.
5092         * include/bits/stl_multimap.h: Likewise.
5093         * include/bits/stl_multiset.h: Likewise.
5094         * include/bits/stl_queue.h: Likewise.
5095         * include/bits/stl_set.h: Likewise.
5096         * include/bits/stl_stack.h: Likewise.
5097         * include/bits/stl_tree.h: Likewise.
5098         * include/bits/stl_vector.h: Likewise.
5099         * include/bits/unordered_map.h: Likewise.
5100         * include/bits/unordered_set.h: Likewise.
5101         * include/debug/array: Likewise.
5102         * include/experimental/any: Likewise.
5103         * include/experimental/bits/fs_path.h: Likewise.
5104         * include/experimental/internet: Likewise.
5105         * include/experimental/string_view: Likewise.
5106         * include/ext/pb_ds/detail/bin_search_tree_/info_fn_imps.hpp:
5107         Likewise.
5108         * include/ext/pb_ds/detail/binary_heap_/binary_heap_.hpp:
5109         Likewise.
5110         * include/ext/pb_ds/detail/binary_heap_/info_fn_imps.hpp:
5111         Likewise.
5112         * include/ext/pb_ds/detail/cc_hash_table_map_/cc_ht_map_.hpp:
5113         Likewise.
5114         * include/ext/pb_ds/detail/cc_hash_table_map_/info_fn_imps.hpp:
5115         Likewise.
5116         * include/ext/pb_ds/detail/cc_hash_table_map_/size_fn_imps.hpp:
5117         Likewise.
5118         * include/ext/pb_ds/detail/gp_hash_table_map_/gp_ht_map_.hpp:
5119         Likewise.
5120         * include/ext/pb_ds/detail/gp_hash_table_map_/info_fn_imps.hpp:
5121         Likewise.
5122         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/
5123         info_fn_imps.hpp: Likewise.
5124         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/
5125         left_child_next_sibling_heap_.hpp: Likewise.
5126         * include/ext/pb_ds/detail/list_update_map_/info_fn_imps.hpp:
5127         Likewise.
5128         * include/ext/pb_ds/detail/list_update_map_/lu_map_.hpp:
5129         Likewise.
5130         * include/ext/pb_ds/detail/ov_tree_map_/info_fn_imps.hpp:
5131         Likewise.
5132         * include/ext/pb_ds/detail/ov_tree_map_/ov_tree_map_.hp:
5133         Likewise.
5134         * include/ext/pb_ds/detail/pat_trie_/info_fn_imps.hpp:
5135         Likewise.
5136         * include/ext/pb_ds/detail/pat_trie_/pat_trie_.hpp:
5137         Likewise.
5138         * include/ext/pb_ds/detail/rc_binomial_heap_/rc.hpp:
5139         Likewise.
5140         * include/ext/pb_ds/detail/tree_trace_base.hpp: Likewise.
5141         * include/ext/pb_ds/trie_policy.hpp: Likewise.
5142         * include/ext/rope: Likewise.
5143         * include/ext/slist: Likewise.
5144         * include/ext/vstring.h: Likewise.
5145         * include/profile/array: Likewise.
5146         * include/std/array: Likewise.
5147         * include/tr1/array: Likewise.
5148         * include/tr1/hashtable.h: Likewise.
5149         * include/tr1/regex: Likewise.
5150         * include/tr2/dynamic_bitset: Likewise.
5151         * include/bits/alloc_traits.h: Add nodiscard attribute to
5152         allocate.
5153         * include/experimental/memory_resource: Likewise.
5154         * include/ext/alloc_traits.h: Likewise.
5155         * include/ext/array_allocator.h: Likewise.
5156         * include/ext/bitmap_allocator.h: Likewise.
5157         * include/ext/debug_allocator.h: Likewise.
5158         * include/ext/extptr_allocator.h: Likewise.
5159         * include/ext/mt_allocator.h: Likewise.
5160         * include/ext/new_allocator.h: Likewise.
5161         * include/ext/pool_allocator.h: Likewise.
5162         * include/ext/throw_allocator.h: Likewise.
5163         * include/std/scoped_allocator: Likewise.
5164         * libsupc++/eh_alloc.cc: Likewise.
5165         * include/std/future: Add nodiscard attribute to async.
5166         * libsupc++/new: Add nodiscard attribute to new.
5167
5168 2019-01-18  Jonathan Wakely  <jwakely@redhat.com>
5169
5170         PR libstdc++/87514
5171         PR libstdc++/87520
5172         PR libstdc++/88782
5173         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export new symbol.
5174         * include/bits/shared_ptr.h
5175         (shared_ptr(_Sp_make_shared_tag, const Alloc&, Args&&...))
5176         (allocate_shared): Change to use new tag type.
5177         * include/bits/shared_ptr_base.h (_Sp_make_shared_tag::_S_eq):
5178         Declare new member function.
5179         (_Sp_alloc_shared_tag): Define new type.
5180         (_Sp_counted_ptr_inplace): Declare __shared_count<_Lp> as a friend.
5181         (_Sp_counted_ptr_inplace::_M_get_deleter) [!__cpp_rtti]: Use
5182         _Sp_make_shared_tag::_S_eq to check type_info.
5183         (__shared_count(Ptr, Deleter),__shared_count(Ptr, Deleter, Alloc)):
5184         Constrain to prevent being called with _Sp_alloc_shared_tag.
5185         (__shared_count(_Sp_make_shared_tag, const _Alloc&, Args&&...)):
5186         Replace constructor with ...
5187         (__shared_count(Tp*&, _Sp_alloc_shared_tag<_Alloc>, Args&&...)): Use
5188         reference parameter so address of the new object can be returned to
5189         the caller. Obtain the allocator from the tag type.
5190         (__shared_ptr(_Sp_make_shared_tag, const Alloc&, Args&&...)): Replace
5191         constructor with ...
5192         (__shared_ptr(_Sp_alloc_shared_tag<Alloc>, Args&&...)): Pass _M_ptr
5193         to the __shared_count constructor.
5194         (__allocate_shared): Change to use new tag type.
5195         * src/c++11/shared_ptr.cc (_Sp_make_shared_tag::_S_eq): Define.
5196
5197 2019-01-17  Jonathan Wakely  <jwakely@redhat.com>
5198
5199         * src/c++17/fs_ops.cc
5200         (equivalent(const path&, const path&, error_code&))
5201         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use GetFileInformationByHandle to
5202         compare files instead of relying on incomplete info returned by stat.
5203
5204         PR libstdc++/88884
5205         * src/c++17/fs_ops.cc (absolute(const path&, error_code&)): Do nothing
5206         if the path is already absolute.
5207         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Normalize root-directory.
5208         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Pass error_code to current_path.
5209
5210         PR libstdc++/88881
5211         * src/c++17/fs_ops.cc (canonical(const path&, error_code&))
5212         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Normalize path, to match behaviour
5213         of filesystem::exists.
5214         (create_directories(const path&, error_code&)): Add assertions.
5215         (status(const path&, error_code&)) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]:
5216         Add workaround for bug in _wstat for paths with trailing slash.
5217         * testsuite/27_io/filesystem/operations/create_directories.cc: Adjust
5218         for expected behaviour on mingw.
5219         * testsuite/experimental/filesystem/operations/create_directories.cc:
5220         Likewise.
5221         * testsuite/27_io/filesystem/operations/temp_directory_path.cc: Use
5222         "TMP" instead of "TMPDIR" and clean environment before each test. Do
5223         not test permissions on mingw targets.
5224
5225 2019-01-16  Jonathan Wakely  <jwakely@redhat.com>
5226
5227         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Add exports for fstream
5228         constructors and open members taking wide strings. Fix patterns for
5229         filesystem::path members to match wstring_view parameters. Add
5230         exports for shared_ptr members used by directory iterators.
5231         * src/c++17/fs_ops.cc (remove(const path&, error_code&)): Clear the
5232         error code parameter if the file doesn't exist.
5233         * src/filesystem/ops.cc (remove(const path&, error_code&)):
5234         Likewise.
5235         * testsuite/27_io/filesystem/operations/canonical.cc: Fix expected
5236         values for mingw targets, where "/" is not an absolute path. Do not
5237         test symlinks on mingw targets.
5238         * testsuite/experimental/filesystem/operations/canonical.cc: Likewise.
5239         * testsuite/27_io/filesystem/operations/copy.cc: Do not test symlinks
5240         on mingw targets.
5241         * testsuite/experimental/filesystem/operations/copy.cc: Likewise.
5242         * testsuite/27_io/filesystem/operations/create_directories.cc: Check
5243         that each component of the path is created.
5244         * testsuite/experimental/filesystem/operations/create_directories.cc:
5245         Likewise.
5246         * testsuite/27_io/filesystem/operations/exists.cc: Do not test
5247         permissions on mingw targets.
5248         * testsuite/experimental/filesystem/operations/exists.cc: Likewise.
5249         * testsuite/27_io/filesystem/operations/is_empty.cc: Likewise.
5250         * testsuite/experimental/filesystem/operations/is_empty.cc: Likewise.
5251         * testsuite/27_io/filesystem/operations/permissions.cc: XFAIL for
5252         mingw targets.
5253         * testsuite/experimental/filesystem/operations/permissions.cc:
5254         Likewise.
5255         * testsuite/27_io/filesystem/operations/remove.cc: Do not test
5256         symlinks or permissions on mingw targets.
5257         * testsuite/experimental/filesystem/operations/remove.cc: Likewise.
5258         * testsuite/27_io/filesystem/operations/remove_all.cc: Do not test
5259         symlinks on mingw targets.
5260         * testsuite/experimental/filesystem/operations/remove_all.cc:
5261         Likewise.
5262         * testsuite/27_io/filesystem/operations/status.cc: Do not test
5263         permissions on mingw targets.
5264         * testsuite/27_io/filesystem/operations/weakly_canonical.cc: Do not
5265         test symlinks on mingw targets.
5266         * testsuite/experimental/filesystem/operations/space.cc: Fix test
5267         for mingw targets.
5268
5269 2019-02-14  Ulrich Drepper  <drepper@redhat.com>
5270
5271         PR libstdc++/88738
5272         Warn about unused comparisons of shared_ptr/unique_ptr
5273         * include/bits/c++config [_GLIBCXX_NODISCARD]: Define.
5274         * include/bits/shared_ptr.h: Use it for operator ==, !=,
5275         <, <=, >, >= for shared_ptr.
5276         * include/bits/unique_ptr.h: Likewise for unique_ptr.
5277
5278 2019-01-15  Jonathan Wakely  <jwakely@redhat.com>
5279
5280         * include/bits/shared_ptr_base.h (__cpp_lib_shared_ptr_arrays): Define
5281         as 201611L, because P0497R0 changes are supported.
5282         * include/std/version (__cpp_lib_shared_ptr_arrays): Likewise.
5283
5284         * include/bits/erase_if.h [__cplusplus > 201703L]
5285         (__cpp_lib_erase_if): Only define for C++2a.
5286         * include/std/iterator [__cplusplus >= 201402L && !_GLIBCXX_DEBUG]
5287         (__cpp_lib_null_iterators): Define.
5288         * include/std/version [__cplusplus >= 201402L && !_GLIBCXX_DEBUG]
5289         (__cpp_lib_null_iterators): Define.
5290         [__cpp_impl_destroying_delete] (__cpp_lib_destroying_delete): Define.
5291
5292         * doc/xml/manual/status_cxx2017.xml: Document P0032R3 and P0307R2
5293         status.
5294         * include/bits/stl_uninitialized.h (__cpp_lib_raw_memory_algorithms):
5295         Define.
5296         * include/std/any (__cpp_lib_any): Define as 201606L, because P0032R3
5297         changes are supported.
5298         * include/std/optional (__cpp_lib_optional): Likewise.
5299         * include/std/variant (__cpp_lib_variant): Likewise.
5300         * include/std/version [!__STRICT_ANSI__]
5301         (__cpp_lib_uncaught_exceptions): Define as long integer.
5302         [__cplusplus >= 201703L] (__cpp_lib_any)
5303         (__cpp_lib_raw_memory_algorithms, __cpp_lib_uncaught_exceptions)
5304         (__cpp_lib_variant): Define for C++17.
5305         [__cplusplus >= 201703L] (__cpp_lib_optional): Update value and define
5306         as long integer.
5307         * libsupc++/exception (__cpp_lib_uncaught_exceptions): Define as long
5308         integer.
5309
5310         * doc/xml/manual/status_cxx2020.xml: Update P1123R0 status.
5311
5312 2019-01-12  Jonathan Wakely  <jwakely@redhat.com>
5313
5314         PR libstdc++/88811
5315         PR libstdc++/83306
5316         * src/filesystem/path.cc: Fix typo. If first path is empty, show []
5317         before second path.
5318         * testsuite/experimental/filesystem/filesystem_error/cons.cc: New
5319         test.
5320
5321 2019-01-11  Jonathan Wakely  <jwakely@redhat.com>
5322
5323         * doc/xml/manual/intro.xml: Include new section.
5324         * doc/xml/manual/status_cxx2017.xml: Document more
5325         implementation-defined properties of the library.
5326         * doc/xml/manual/status_cxx2020.xml: Document C++2a status.
5327         * doc/html/*: Regenerate.
5328
5329         * include/bits/refwrap.h [__cplusplus > 201703L]
5330         (_Refwrap_base_arg1, _Refwrap_base_arg2, _Reference_wrapper_base)
5331         (_Reference_wrapper_base_memfun): Do not define for C++2a.
5332         (reference_wrapper): Do not derive from _Reference_wrapper_base_memfun
5333         for C++2a.
5334         (reference_wrapper::operator()): Add static assertion.
5335         * testsuite/20_util/reference_wrapper/incomplete.cc: New test.
5336
5337         * include/std/chrono (duration_values::zero(), duration_values::min())
5338         (duration_values::max()): Add noexcept.
5339         (duration::zero(), duration::min(), duration::max()): Likewise.
5340         (time_point::zero(), time_point::min(), time_point::max()): Likewise.
5341         * testsuite/20_util/duration/requirements/noexcept.cc: New test.
5342         * testsuite/20_util/time_point/requirements/noexcept.cc: New test.
5343
5344         * include/std/version (__cpp_lib_erase_if): Move to C++20 group.
5345
5346 2019-01-11  Jakub Jelinek  <jakub@redhat.com>
5347
5348         * include/std/type_traits (__cpp_lib_is_constant_evaluated): Define.
5349         * include/std/version (__cpp_lib_is_constant_evaluated): Define.
5350
5351 2019-01-11  Jonathan Wakely  <jwakely@redhat.com>
5352
5353         PR libstdc++/88802
5354         * include/bits/functional_hash.h (hash<nullptr_t>): Define
5355         specialization for C++17 (P0513R0, LWG 2817).
5356         * testsuite/20_util/hash/nullptr.cc: New test.
5357
5358         PR libstdc++/88125
5359         * config/abi/pre/gnu.ver (GLIBCXX_3.4.6): Remove unused duplicate
5360         pattern for std::basic_stringbuf::str().
5361
5362         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Correct recent changes to
5363         basic_ostream::operator<< patterns.
5364
5365 2019-01-10  Jonathan Wakely  <jwakely@redhat.com>
5366
5367         * testsuite/27_io/filesystem/operations/last_write_time.cc: Fix
5368         test failures on targets with 32-bit time_t.
5369
5370         * include/bits/erase_if.h: Define __cpp_lib_erase_if.
5371         * include/std/deque: Likewise.
5372         * include/std/forward_list: Likewise.
5373         * include/std/list: Likewise.
5374         * include/std/string: Likewise.
5375         * include/std/vector: Likewise.
5376         * include/std/version: Likewise.
5377         * testsuite/21_strings/basic_string/erasure.cc: Test macro.
5378         * testsuite/23_containers/deque/erasure.cc: Likewise.
5379         * testsuite/23_containers/forward_list/erasure.cc: Likewise.
5380         * testsuite/23_containers/list/erasure.cc: Likewise.
5381         * testsuite/23_containers/map/erasure.cc: Likewise.
5382         * testsuite/23_containers/set/erasure.cc: Likewise.
5383         * testsuite/23_containers/unordered_map/erasure.cc: Likewise.
5384         * testsuite/23_containers/unordered_set/erasure.cc: Likewise.
5385         * testsuite/23_containers/vector/erasure.cc: Likewise.
5386
5387         * include/experimental/internet [AI_NUMERICSERV]
5388         (resolver_base::numeric_service): Define conditionally.
5389         * testsuite/experimental/net/internet/resolver/base.cc: Test it
5390         conditionally.
5391         * testsuite/experimental/net/internet/resolver/ops/lookup.cc:
5392         Likewise.
5393
5394 2019-01-10  Ville Voutilainen  <ville.voutilainen@gmail.com>
5395             Jonathan Wakely  <jwakely@redhat.com>
5396
5397         Implement LWG 2221
5398         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Tighten patterns.
5399         (GLIBCXX_3.4.26): Add new exports.
5400         * include/Makefile.am: Add ostream-inst.cc. Move string-inst.cc to
5401         correct list of sources.
5402         * include/Makefile.in: Regenerate.
5403         * include/std/ostream (operator<<(nullptr_t)): New member function.
5404         * src/c++17/ostream-inst.cc: New file.
5405         * testsuite/27_io/basic_ostream/inserters_other/char/lwg2221.cc: New
5406         test.
5407
5408 2019-01-10  Jonathan Wakely  <jwakely@redhat.com>
5409
5410         * testsuite/util/testsuite_fs.h (nonexistent_path): Include name
5411         of the source file containing the caller.
5412         * testsuite/27_io/filesystem/iterators/directory_iterator.cc: Remove
5413         directories created by test.
5414         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
5415         Likewise.
5416         * testsuite/experimental/filesystem/iterators/directory_iterator.cc:
5417         Likewise.
5418         * testsuite/experimental/filesystem/iterators/
5419         recursive_directory_iterator.cc: Likewise.
5420
5421 2019-01-10  Jakub Jelinek  <jakub@redhat.com>
5422
5423         PR tree-optimization/88775
5424         * include/bits/stl_function.h (greater<_Tp*>::operator(),
5425         less<_Tp*>::operator(), greater_equal<_Tp*>::operator(),
5426         less_equal<_Tp*>::operator()): Use __builtin_is_constant_evaluated
5427         instead of __builtin_constant_p if available.  Don't bother with
5428         the pointer comparison in C++11 and earlier.
5429
5430 2019-01-09  Sandra Loosemore  <sandra@codesourcery.com>
5431
5432         PR other/16615
5433
5434         * include/ext/bitmap_allocator.h: Mechanically replace "can not"
5435         with "cannot".
5436
5437 2019-01-09  Jonathan Wakely  <jwakely@redhat.com>
5438
5439         * testsuite/libstdc++-prettyprinters/cxx17.cc: Fix expected output
5440         for filesystem::path. Give variables more distinctive names.
5441
5442         * include/std/optional (_Optional_payload_base::_M_copy_assign): New
5443         member function to perform non-trivial assignment.
5444         (_Optional_payload_base::_M_move_assign): Likewise.
5445         (_Optional_payload<T, true, false, true>::operator=)
5446         (_Optional_payload<T, true, true, false>::operator=)
5447         (_Optional_payload<T, true, false, false>::operator=): Call
5448         _M_copy_assign and/or _M_move_assign to do non-trivial assignments.
5449
5450         PR libstdc++/88204
5451         * testsuite/26_numerics/complex/operators/more_constexpr.cc: Do not
5452         test std::complex<long double> if long double format is IBM128.
5453         * testsuite/26_numerics/complex/requirements/more_constexpr.cc:
5454         Likewise.
5455
5456 2019-01-08  Jonathan Wakely  <jwakely@redhat.com>
5457
5458         * testsuite/libstdc++-prettyprinters/compat.cc: Test printer support
5459         for old std::unique_ptr layout.
5460         * testsuite/libstdc++-prettyprinters/cxx17.cc: Fix std::variant test
5461         to become valueless. Add filesystem::path tests.
5462
5463         PR libstdc++/87855
5464         * include/std/optional (_Optional_payload_base): New class template
5465         for common code hoisted from _Optional_payload specializations. Use
5466         a template for the union, to allow a partial specialization for
5467         types with non-trivial destructors. Add constructors for in-place
5468         initialization to the union.
5469         (_Optional_payload(bool, const _Optional_payload&)): Use _M_construct
5470         to perform non-trivial copy construction, instead of relying on
5471         non-standard copy elision in a delegating constructor.
5472         (_Optional_payload(bool, _Optional_payload&&)): Likewise for
5473         non-trivial move construction.
5474         (_Optional_payload): Derive from _Optional_payload_base and use it
5475         for everything except the non-trivial assignment operators, which are
5476         defined as needed.
5477         (_Optional_payload<false, C, M>): Derive from the specialization
5478         _Optional_payload<true, false, false> and add a destructor.
5479         (_Optional_base_impl::_M_destruct, _Optional_base_impl::_M_reset):
5480         Forward to corresponding members of _Optional_payload.
5481         (_Optional_base_impl::_M_is_engaged, _Optional_base_impl::_M_get):
5482         Hoist common members from _Optional_base.
5483         (_Optional_base): Make all members and base class public.
5484         (_Optional_base::_M_get, _Optional_base::_M_is_engaged): Move to
5485         _Optional_base_impl.
5486         * python/libstdcxx/v6/printers.py (StdExpOptionalPrinter): Add
5487         support for new std::optional layout.
5488         * testsuite/libstdc++-prettyprinters/compat.cc: New test.
5489
5490         PR libstdc++/88066
5491         * include/bits/locale_conv.h: Use <> for includes not "".
5492         * include/ext/random: Likewise.
5493         * include/ext/vstring.h: Likewise.
5494
5495 2019-01-08  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
5496
5497         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Tighten existing patterns.
5498         (GLIBCXX_3.4.21): Likewise.
5499
5500 2019-01-08  Jonathan Wakely  <jwakely@redhat.com>
5501
5502         PR libstdc++/88749
5503         * src/filesystem/ops.cc (last_write_time): Fix preprocessor condition
5504         to match the one that controls whether utimbuf and utime are declared.
5505
5506 2019-01-07  Jonathan Wakely  <jwakely@redhat.com>
5507
5508         PR libstdc++/87787
5509         * include/bits/char_traits.h (char_traits::move): Do not pass null
5510         pointers to memmove.
5511         * include/bits/locale_facets.h
5512         (ctype<char>::widen(const char*, const char*, char*)): Do not
5513         pass null pointers to memcpy.
5514         (ctype<char>::narrow(const char*, const char*, char, char*)):
5515         Likewise.
5516         (ctype<char>::do_widen(const char*, const char*, char*)):
5517         Likewise.
5518         (ctype<char>::do_narrow(const char*, const char*, char, char*)):
5519         Likewise.
5520
5521         * doc/xml/manual/spine.xml: Update copyright years.
5522         * doc/xml/manual/status_cxx2017.xml: Adjust note about -lstdc++fs.
5523         * doc/xml/manual/using.xml: Remove requirement to link with -lstdc++fs
5524         for C++17 filesystem library.
5525         * doc/html/*: Regenerate.
5526
5527         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for truncate.
5528         * config.h.in: Regenerate.
5529         * config/abi/pre/gnu.ver: Order patterns for filesystem operations
5530         alphabetically and add missing entries for copy_symlink,
5531         hard_link_count, rename, and resize_file.
5532         * configure: Regenerate.
5533         * src/c++17/fs_ops.cc (resize_file): Remove #if so posix::truncate is
5534         used unconditionally.
5535         * src/filesystem/ops-common.h (__gnu_posix::truncate)
5536         [!_GLIBCXX_HAVE_TRUNCATE]: Provide fallback definition that only
5537         supports truncating to zero length.
5538         * testsuite/27_io/filesystem/operations/all.cc: New test.
5539         * testsuite/27_io/filesystem/operations/resize_file.cc: New test.
5540
5541 2019-01-06  Jonathan Wakely  <jwakely@redhat.com>
5542
5543         PR libstdc++/86756
5544         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for utime and
5545         lstat and define _GLIBCXX_USE_UTIME and _GLIBCXX_USE_LSTAT.
5546         * config.h.in: Regenerate.
5547         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export symbols for
5548         remaining std::filesystem types and functions.
5549         * configure: Regenerate.
5550         * src/c++17/Makefile.am: Add C++17 filesystem sources.
5551         * src/c++17/Makefile.in: Regenerate.
5552         * src/c++17/cow-fs_dir.cc: Move src/filesystem/cow-std-dir.cc to
5553         here, and change name of included file.
5554         * src/c++17/cow-fs_ops.cc: Move src/filesystem/cow-std-ops.cc to
5555         here, and change name of included file.
5556         * src/c++17/fs_dir.cc: Move src/filesystem/std-dir.cc to here. Change
5557         path to dir-common.h.
5558         * src/c++17/fs_ops.cc: Move src/filesystem/std-ops.cc to here. Change
5559         path to ops-common.h. Disable -Wunused-parameter warnings.
5560         (internal_file_clock): Define unconditionally.
5561         [!_GLIBCXX_HAVE_SYS_STAT_H] (internal_file_clock::from_stat): Do not
5562         define.
5563         (do_copy_file, do_space): Move definitions to ops.common.h.
5564         (copy, file_size, hard_link_count, last_write_time, space): Only
5565         perform operation when _GLIBCXX_HAVE_SYS_STAT_H is defined, otherwise
5566         report an error.
5567         (last_write_time, read_symlink): Remove unused attributes from
5568         parameters.
5569         * src/filesystem/Makefile.am: Remove C++17 filesystem sources.
5570         * src/filesystem/Makefile.in: Regenerate.
5571         * src/filesystem/cow-std-dir.cc: Move to src/c++17/cow-fs_dir.cc.
5572         * src/filesystem/cow-std-ops.cc: Move to src/c++17/cow-fs_ops.cc.
5573         * src/filesystem/std-dir.cc: Move to src/c++17/fs_dir.cc.
5574         * src/filesystem/std-ops.cc: Move to src/c++17/fs_ops.cc.
5575         * src/filesystem/dir-common.h [!_GLIBCXX_HAVE_DIRENT_H]: Define
5576         dummy types and functions instead of using #error.
5577         * src/filesystem/dir.cc [!_GLIBCXX_HAVE_DIRENT_H]: Use #error.
5578         * src/filesystem/ops-common.h [!_GLIBCXX_USE_LSTAT] (lstat): Define
5579         in terms of stat.
5580         [!_GLIBCXX_HAVE_UNISTD_H]: Define dummy types and functions.
5581         (do_copy_file, do_space): Move definitions here from std-ops.cc.
5582         * src/filesystem/ops.cc: Adjust calls to do_copy_file and do_space
5583         to account for new namespace.
5584         * testsuite/27_io/filesystem/directory_entry/86597.cc: Remove
5585         -lstdc++fs from dg-options.
5586         * testsuite/27_io/filesystem/directory_entry/lwg3171.cc: Likewise.
5587         * testsuite/27_io/filesystem/file_status/1.cc: Likewise.
5588         * testsuite/27_io/filesystem/filesystem_error/cons.cc: Likewise.
5589         * testsuite/27_io/filesystem/filesystem_error/copy.cc: Likewise.
5590         * testsuite/27_io/filesystem/iterators/directory_iterator.cc:
5591         Likewise.
5592         * testsuite/27_io/filesystem/iterators/pop.cc: Likewise.
5593         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
5594         Likewise.
5595         * testsuite/27_io/filesystem/operations/absolute.cc: Likewise.
5596         * testsuite/27_io/filesystem/operations/canonical.cc: Likewise.
5597         * testsuite/27_io/filesystem/operations/copy.cc: Likewise.
5598         * testsuite/27_io/filesystem/operations/copy_file.cc: Likewise.
5599         * testsuite/27_io/filesystem/operations/create_directories.cc:
5600         Likewise.
5601         * testsuite/27_io/filesystem/operations/create_directory.cc: Likewise.
5602         * testsuite/27_io/filesystem/operations/create_symlink.cc: Likewise.
5603         * testsuite/27_io/filesystem/operations/current_path.cc: Likewise.
5604         * testsuite/27_io/filesystem/operations/equivalent.cc: Likewise.
5605         * testsuite/27_io/filesystem/operations/exists.cc: Likewise.
5606         * testsuite/27_io/filesystem/operations/file_size.cc: Likewise.
5607         * testsuite/27_io/filesystem/operations/is_empty.cc: Likewise.
5608         * testsuite/27_io/filesystem/operations/last_write_time.cc: Likewise.
5609         * testsuite/27_io/filesystem/operations/permissions.cc: Likewise.
5610         * testsuite/27_io/filesystem/operations/proximate.cc: Likewise.
5611         * testsuite/27_io/filesystem/operations/read_symlink.cc: Likewise.
5612         * testsuite/27_io/filesystem/operations/relative.cc: Likewise.
5613         * testsuite/27_io/filesystem/operations/remove.cc: Likewise.
5614         * testsuite/27_io/filesystem/operations/remove_all.cc: Likewise.
5615         * testsuite/27_io/filesystem/operations/space.cc: Likewise.
5616         * testsuite/27_io/filesystem/operations/status.cc: Likewise.
5617         * testsuite/27_io/filesystem/operations/symlink_status.cc: Likewise.
5618         * testsuite/27_io/filesystem/operations/temp_directory_path.cc:
5619         Likewise.
5620         * testsuite/27_io/filesystem/operations/weakly_canonical.cc: Likewise.
5621
5622
5623         PR libstdc++/86756
5624         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Make various patterns for
5625         typeinfo and vtables less greedy.
5626         (GLIBCXX_3.4.26): Export symbols for std::filesystem::path.
5627         * src/c++17/Makefile.am: Add fs_path.cc and cow-fs_path.cc.
5628         * src/c++17/Makefile.in: Regenerate.
5629         * src/c++17/cow-fs_path.cc: Move src/filesystem/cow-std-path.cc to
5630         here, and change name of included file.
5631         * src/c++17/fs_path.cc: Move src/filesystem/std-path.cc to here.
5632         * src/filesystem/Makefile.am: Remove std-path.cc and cow-std-path.cc
5633         from sources.
5634         * src/filesystem/Makefile.in: Regenerate.
5635         * src/filesystem/cow-std-path.cc: Move to src/c++17/cow-fs_path.cc.
5636         * src/filesystem/std-path.cc: Move to src/c++17/fs_path.cc.
5637         * testsuite/27_io/filesystem/path/append/path.cc: Remove -lstdc++fs
5638         from dg-options and remove dg-require-filesystem-ts.
5639         * testsuite/27_io/filesystem/path/append/source.cc: Likewise.
5640         * testsuite/27_io/filesystem/path/assign/assign.cc: Likewise.
5641         * testsuite/27_io/filesystem/path/assign/copy.cc: Likewise.
5642         * testsuite/27_io/filesystem/path/compare/compare.cc: Likewise.
5643         * testsuite/27_io/filesystem/path/compare/lwg2936.cc: Likewise.
5644         * testsuite/27_io/filesystem/path/compare/path.cc: Likewise.
5645         * testsuite/27_io/filesystem/path/compare/strings.cc: Likewise.
5646         * testsuite/27_io/filesystem/path/concat/path.cc: Likewise.
5647         * testsuite/27_io/filesystem/path/concat/strings.cc: Likewise.
5648         * testsuite/27_io/filesystem/path/construct/80762.cc: Likewise.
5649         * testsuite/27_io/filesystem/path/construct/copy.cc: Likewise.
5650         * testsuite/27_io/filesystem/path/construct/default.cc: Likewise.
5651         * testsuite/27_io/filesystem/path/construct/format.cc: Likewise.
5652         * testsuite/27_io/filesystem/path/construct/locale.cc: Likewise.
5653         * testsuite/27_io/filesystem/path/construct/range.cc: Likewise.
5654         * testsuite/27_io/filesystem/path/construct/string_view.cc: Likewise.
5655         * testsuite/27_io/filesystem/path/decompose/extension.cc: Likewise.
5656         * testsuite/27_io/filesystem/path/decompose/filename.cc: Likewise.
5657         * testsuite/27_io/filesystem/path/decompose/parent_path.cc: Likewise.
5658         * testsuite/27_io/filesystem/path/decompose/relative_path.cc: Likewise.
5659         * testsuite/27_io/filesystem/path/decompose/root_directory.cc:
5660         Likewise.
5661         * testsuite/27_io/filesystem/path/decompose/root_name.cc: Likewise.
5662         * testsuite/27_io/filesystem/path/decompose/root_path.cc: Likewise.
5663         * testsuite/27_io/filesystem/path/decompose/stem.cc: Likewise.
5664         * testsuite/27_io/filesystem/path/generation/normal.cc: Likewise.
5665         * testsuite/27_io/filesystem/path/generation/normal2.cc: Likewise.
5666         * testsuite/27_io/filesystem/path/generation/proximate.cc: Likewise.
5667         * testsuite/27_io/filesystem/path/generation/relative.cc: Likewise.
5668         * testsuite/27_io/filesystem/path/generic/generic_string.cc: Likewise.
5669         * testsuite/27_io/filesystem/path/itr/components.cc: Likewise.
5670         * testsuite/27_io/filesystem/path/itr/traversal.cc: Likewise.
5671         * testsuite/27_io/filesystem/path/modifiers/clear.cc: Likewise.
5672         * testsuite/27_io/filesystem/path/modifiers/make_preferred.cc:
5673         Likewise.
5674         * testsuite/27_io/filesystem/path/modifiers/remove_filename.cc:
5675         Likewise.
5676         * testsuite/27_io/filesystem/path/modifiers/replace_extension.cc:
5677         Likewise.
5678         * testsuite/27_io/filesystem/path/modifiers/replace_filename.cc:
5679         Likewise.
5680         * testsuite/27_io/filesystem/path/modifiers/swap.cc: Likewise.
5681         * testsuite/27_io/filesystem/path/native/string.cc: Likewise.
5682         * testsuite/27_io/filesystem/path/nonmember/append.cc: Likewise.
5683         * testsuite/27_io/filesystem/path/nonmember/hash_value.cc: Likewise.
5684         * testsuite/27_io/filesystem/path/query/empty.cc: Likewise.
5685         * testsuite/27_io/filesystem/path/query/has_extension.cc: Likewise.
5686         * testsuite/27_io/filesystem/path/query/has_filename.cc: Likewise.
5687         * testsuite/27_io/filesystem/path/query/has_parent_path.cc: Likewise.
5688         * testsuite/27_io/filesystem/path/query/has_relative_path.cc: Likewise.
5689         * testsuite/27_io/filesystem/path/query/has_root_directory.cc:
5690         Likewise.
5691         * testsuite/27_io/filesystem/path/query/has_root_name.cc: Likewise.
5692         * testsuite/27_io/filesystem/path/query/has_root_path.cc: Likewise.
5693         * testsuite/27_io/filesystem/path/query/has_stem.cc: Likewise.
5694         * testsuite/27_io/filesystem/path/query/is_absolute.cc: Likewise.
5695         * testsuite/27_io/filesystem/path/query/is_relative.cc: Likewise.
5696
5697         PR libstdc++/87431
5698         * include/std/variant (_Variant_storage<true, _Types...>::_M_valid):
5699         Check is_trivially_copyable instead of is_scalar.
5700         (variant::emplace<N, Args>(Args&&...)): If construction of the new
5701         contained value can throw and its type is trivially copyable then
5702         construct into a temporary variant and move from it, to provide the
5703         strong exception safety guarantee.
5704         (variant::emplace<N, U, Args>(initializer_list<U>, Args&&...)):
5705         Likewise.
5706         * testsuite/20_util/variant/87431.cc: New test.
5707         * testsuite/20_util/variant/run.cc: Adjust test so that throwing
5708         conversion causes valueless state.
5709
5710         PR libstdc++/88607
5711         * testsuite/17_intro/headers/c++1998/charset.cc: New test.
5712         * testsuite/17_intro/headers/c++2011/charset.cc: New test.
5713         * testsuite/17_intro/headers/c++2014/charset.cc: New test.
5714         * testsuite/17_intro/headers/c++2017/charset.cc: New test.
5715         * testsuite/17_intro/headers/c++2020/charset.cc: New test.
5716
5717 2019-01-05  Jonathan Wakely  <jwakely@redhat.com>
5718
5719         * include/bits/fs_fwd.h (__file_clock): Define new clock.
5720         (file_time_type): Redefine in terms of __file_clock.
5721         * src/filesystem/ops-common.h (file_time): Add FIXME comment about
5722         overflow.
5723         * src/filesystem/std-ops.cc (is_set(perm_options, perm_options)): Give
5724         internal linkage.
5725         (internal_file_lock): New helper type for accessing __file_clock.
5726         (do_copy_file): Use internal_file_lock to convert system time to
5727         file_time_type.
5728         (last_write_time(const path&, error_code&)): Likewise.
5729         (last_write_time(const path&, file_time_type, error_code&)): Likewise.
5730
5731 2019-01-04  Jonathan Wakely  <jwakely@redhat.com>
5732
5733         * config/abi/pre/gnu.ver (GLIBCXX_3.4.21): Make patterns less greedy
5734         for const member functions of std::basic_string.
5735         (GLIBCXX_3.4.26): Export member functions of std::basic_string added
5736         in C++17.
5737         * include/bits/basic_string.h (basic_string(__sv_wrapper, const A&)):
5738         Make non-standard constructor private.
5739         [!_GLIBCXX_USE_CXX11_ABI] (basic_string(__sv_wrapper, const A&)):
5740         Likewise.
5741         * include/bits/basic_string.tcc (std::string, std::wstring): Declare
5742         explicit instantiations for C++17 as well as earlier dialects.
5743         * src/c++17/Makefile.am: Add new source files.
5744         * src/c++17/Makefile.in: Regenerate.
5745         * src/c++17/cow-string-inst.cc: New file defining explicit
5746         instantiations for basic_string member functions added in C++17.
5747         * src/c++17/string-inst.cc: Likewise.
5748
5749         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export allocator-extended
5750         copy/move constructors for old std::basic_string.
5751         * include/bits/basic_string.h [!_GLIBCXX_USE_CXX11_ABI]
5752         (basic_string::reference, basic_string::const_reference): Define
5753         as plain references for C++11 and later.
5754         (basic_string::basic_string()): Put constructor body outside
5755         preprocessor conditional groups.
5756         (basic_string::basic_string(basic_string&&)): Move _Alloc_hider
5757         instead of copying it.
5758         (basic_string::basic_string(const basic_string&, const _Alloc&)):
5759         Define.
5760         (basic_string::basic_string(basic_string&&, const _Alloc&)):
5761         Define.
5762         * include/bits/fs_path.h [!_GLIBCXX_USE_CXX11_ABI]: Remove special
5763         cases for old basic_string.
5764         * testsuite/21_strings/basic_string/cons/char/8.cc: Test
5765         allocator-extended constructors unconditionally. Add extra members to
5766         allocator type when using old string ABI.
5767         * testsuite/21_strings/basic_string/allocator/71964.cc: Enable test
5768         for old string ABI.
5769         * testsuite/21_strings/basic_string/cons/wchar_t/8.cc: Likewise.
5770
5771         * testsuite/23_containers/list/61347.cc: Avoid spurious failure when
5772         -fno-inline added to test flags.
5773
5774         * testsuite/21_strings/basic_string/requirements/
5775         explicit_instantiation/debug.cc: Remove XFAIL for old ABI.
5776
5777         * testsuite/27_io/filesystem/filesystem_error/copy.cc: Fix static
5778         assertion failures with old std::string ABI.
5779
5780         * include/bits/fs_path.h (path::_List::erase): Replace both overloads
5781         with ...
5782         (path::pop_back(), path::_M_erase_from(const_iterator)): New member
5783         functions that will only erase elements at the end.
5784         * src/filesystem/std-path.cc (path::_List::_Impl::pop_back()): Define.
5785         (path::_List::_Impl::_M_erase_from(const_iterator)): Define.
5786         (path::_List::operator=(const _List&)): Use _M_erase_from(p) instead
5787         of erase(p, end()).
5788         (path::_List::pop_back()): Define.
5789         (path::_List::_M_erase_from(const_iterator)): Define.
5790         (path::operator/=(const path&)): Use pop_back to remove last component
5791         and _M_erase_from to remove multiple components.
5792         (path::_M_append(basic_string_view<value_type>)): Likewise.
5793         (path::operator+=(const path&)): Likewise.
5794         (path::_M_concat(basic_string_view<value_type>)): Likewise.
5795         (path::remove_filename()): Likewise.
5796         (path::lexically_normal()): Use _List::_Impl iterators instead of
5797         path::iterator. Use pop_back to remove components from the end. Clear
5798         trailing filename, instead of using erase(const_iterator) to remove
5799         a non-final component.
5800         * testsuite/27_io/filesystem/path/generation/normal.cc: Test
5801         additional cases.
5802         * testsuite/27_io/filesystem/path/generation/normal2.cc: New test.
5803
5804         * src/filesystem/std-path.cc (path::operator+=(const path&)): Fix
5805         incorrect treatment of empty filename after trailing slash.
5806         * testsuite/27_io/filesystem/path/concat/path.cc: Test problem case.
5807
5808         * testsuite/21_strings/basic_string/modifiers/assign/char/
5809         move_assign_optim.cc: Avoid spurious failure when -fno-inline added
5810         to test flags.
5811         * testsuite/21_strings/basic_string/modifiers/assign/wchar_t/
5812         move_assign_optim.cc: Likewise.
5813
5814 2019-01-03  Jonathan Wakely  <jwakely@redhat.com>
5815             Jakub Jelinek  <jakub@redhat.com>
5816
5817         PR libstdc++/88607
5818         * include/experimental/memory: Replace UTF-8 quote characters.
5819         * include/std/future: Replace UTF-8 "em dash" characters.
5820
5821 2019-01-03  Jonathan Wakely  <jwakely@redhat.com>
5822
5823         PR libstdc++/88607
5824         * include/bits/forward_list.h: Replace UTF-8 "ligature fi" character.
5825         * include/debug/forward_list: Likewise.
5826         * include/experimental/bits/shared_ptr.h: Remove UTF-8 "section sign"
5827         character.
5828         * include/experimental/chrono: Likewise.
5829         * include/experimental/functional: Likewise.
5830         * include/experimental/ratio: Likewise.
5831         * include/experimental/system_error: Likewise.
5832         * include/experimental/tuple: Likewise.
5833         * include/experimental/type_traits: Likewise.
5834         * include/parallel/workstealing.h: Replace UTF-8 "en dash" character.
5835         * include/parallel/multiseq_selection.h: Likewise.
5836
5837         PR libstdc++/88681
5838         * config/abi/pre/gnu.ver: Add missing exports.
5839         * testsuite/22_locale/collate_byname/88681.cc: New test.
5840         * testsuite/22_locale/time_get/get/char/88681.cc: New test.
5841         * testsuite/22_locale/time_get/get/wchar_t/88681.cc: New test.
5842
5843 2019-01-02  Jonathan Wakely  <jwakely@redhat.com>
5844
5845         * testsuite/23_containers/map/cons/deduction.cc: Test deduction from
5846         initializer_list<value_type> and from input iterator ranges.
5847         * testsuite/23_containers/multimap/cons/deduction.cc: Likewise.
5848
5849         * testsuite/experimental/string_view/element_access/char/empty.cc:
5850         Fix year range in copyright header.
5851
5852 2019-01-02  Joel Brobecker  <brobecker@adacore.com>
5853
5854         * testsuite/21_strings/basic_string_view/element_access/char/empty.cc:
5855         Fix year range in copyright header.
5856
5857 2019-01-01  Jakub Jelinek  <jakub@redhat.com>
5858
5859         Update copyright years.
5860 \f
5861 Copyright (C) 2019 Free Software Foundation, Inc.
5862
5863 Copying and distribution of this file, with or without modification,
5864 are permitted in any medium without royalty provided the copyright
5865 notice and this notice are preserved.