libstdc++-v3/ChangeLog

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